diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 8125 |
1 files changed, 0 insertions, 8125 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c deleted file mode 100644 index 45fefa0ed160..000000000000 --- a/drivers/gpu/drm/i915/intel_pm.c +++ /dev/null @@ -1,8125 +0,0 @@ -/* - * Copyright © 2012 Intel Corporation - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - * - * Authors: - * Eugeni Dodonov <eugeni.dodonov@intel.com> - * - */ - -#include <linux/module.h> -#include <linux/pm_runtime.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_fourcc.h> -#include <drm/drm_plane_helper.h> - -#include "display/intel_atomic.h" -#include "display/intel_atomic_plane.h" -#include "display/intel_bw.h" -#include "display/intel_de.h" -#include "display/intel_display_types.h" -#include "display/intel_fbc.h" -#include "display/intel_sprite.h" -#include "display/skl_universal_plane.h" - -#include "gt/intel_llc.h" - -#include "i915_drv.h" -#include "i915_fixed.h" -#include "i915_irq.h" -#include "i915_trace.h" -#include "intel_pm.h" -#include "intel_sideband.h" -#include "../../../platform/x86/intel_ips.h" - -/* Stores plane specific WM parameters */ -struct skl_wm_params { - bool x_tiled, y_tiled; - bool rc_surface; - bool is_planar; - u32 width; - u8 cpp; - u32 plane_pixel_rate; - u32 y_min_scanlines; - u32 plane_bytes_per_line; - uint_fixed_16_16_t plane_blocks_per_line; - uint_fixed_16_16_t y_tile_minimum; - u32 linetime_us; - u32 dbuf_block_size; -}; - -/* used in computing the new watermarks state */ -struct intel_wm_config { - unsigned int num_pipes_active; - bool sprites_enabled; - bool sprites_scaled; -}; - -static void gen9_init_clock_gating(struct drm_i915_private *dev_priv) -{ - if (HAS_LLC(dev_priv)) { - /* - * WaCompressedResourceDisplayNewHashMode:skl,kbl - * Display WA #0390: skl,kbl - * - * Must match Sampler, Pixel Back End, and Media. See - * WaCompressedResourceSamplerPbeMediaNewHashMode. - */ - intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR1_1, - intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR1_1) | - SKL_DE_COMPRESSED_HASH_MODE); - } - - /* See Bspec note for PSR2_CTL bit 31, Wa#828:skl,bxt,kbl,cfl */ - intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR1_1, - intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP); - - /* WaEnableChickenDCPR:skl,bxt,kbl,glk,cfl */ - intel_uncore_write(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1, - intel_uncore_read(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM); - - /* - * WaFbcWakeMemOn:skl,bxt,kbl,glk,cfl - * Display WA #0859: skl,bxt,kbl,glk,cfl - */ - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) | - DISP_FBC_MEMORY_WAKE); -} - -static void bxt_init_clock_gating(struct drm_i915_private *dev_priv) -{ - gen9_init_clock_gating(dev_priv); - - /* WaDisableSDEUnitClockGating:bxt */ - intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) | - GEN8_SDEUNIT_CLOCK_GATE_DISABLE); - - /* - * FIXME: - * GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ applies on 3x6 GT SKUs only. - */ - intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) | - GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ); - - /* - * Wa: Backlight PWM may stop in the asserted state, causing backlight - * to stay fully on. - */ - intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_0, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_0) | - PWM1_GATING_DIS | PWM2_GATING_DIS); - - /* - * Lower the display internal timeout. - * This is needed to avoid any hard hangs when DSI port PLL - * is off and a MMIO access is attempted by any privilege - * application, using batch buffers or any other means. - */ - intel_uncore_write(&dev_priv->uncore, RM_TIMEOUT, MMIO_TIMEOUT_US(950)); - - /* - * WaFbcTurnOffFbcWatermark:bxt - * Display WA #0562: bxt - */ - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) | - DISP_FBC_WM_DIS); - - /* - * WaFbcHighMemBwCorruptionAvoidance:bxt - * Display WA #0883: bxt - */ - intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN, intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN) | - ILK_DPFC_DISABLE_DUMMY0); -} - -static void glk_init_clock_gating(struct drm_i915_private *dev_priv) -{ - gen9_init_clock_gating(dev_priv); - - /* - * WaDisablePWMClockGating:glk - * Backlight PWM may stop in the asserted state, causing backlight - * to stay fully on. - */ - intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_0, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_0) | - PWM1_GATING_DIS | PWM2_GATING_DIS); -} - -static void pnv_get_mem_freq(struct drm_i915_private *dev_priv) -{ - u32 tmp; - - tmp = intel_uncore_read(&dev_priv->uncore, CLKCFG); - - switch (tmp & CLKCFG_FSB_MASK) { - case CLKCFG_FSB_533: - dev_priv->fsb_freq = 533; /* 133*4 */ - break; - case CLKCFG_FSB_800: - dev_priv->fsb_freq = 800; /* 200*4 */ - break; - case CLKCFG_FSB_667: - dev_priv->fsb_freq = 667; /* 167*4 */ - break; - case CLKCFG_FSB_400: - dev_priv->fsb_freq = 400; /* 100*4 */ - break; - } - - switch (tmp & CLKCFG_MEM_MASK) { - case CLKCFG_MEM_533: - dev_priv->mem_freq = 533; - break; - case CLKCFG_MEM_667: - dev_priv->mem_freq = 667; - break; - case CLKCFG_MEM_800: - dev_priv->mem_freq = 800; - break; - } - - /* detect pineview DDR3 setting */ - tmp = intel_uncore_read(&dev_priv->uncore, CSHRDDR3CTL); - dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0; -} - -static void ilk_get_mem_freq(struct drm_i915_private *dev_priv) -{ - u16 ddrpll, csipll; - - ddrpll = intel_uncore_read16(&dev_priv->uncore, DDRMPLL1); - csipll = intel_uncore_read16(&dev_priv->uncore, CSIPLL0); - - switch (ddrpll & 0xff) { - case 0xc: - dev_priv->mem_freq = 800; - break; - case 0x10: - dev_priv->mem_freq = 1066; - break; - case 0x14: - dev_priv->mem_freq = 1333; - break; - case 0x18: - dev_priv->mem_freq = 1600; - break; - default: - drm_dbg(&dev_priv->drm, "unknown memory frequency 0x%02x\n", - ddrpll & 0xff); - dev_priv->mem_freq = 0; - break; - } - - switch (csipll & 0x3ff) { - case 0x00c: - dev_priv->fsb_freq = 3200; - break; - case 0x00e: - dev_priv->fsb_freq = 3733; - break; - case 0x010: - dev_priv->fsb_freq = 4266; - break; - case 0x012: - dev_priv->fsb_freq = 4800; - break; - case 0x014: - dev_priv->fsb_freq = 5333; - break; - case 0x016: - dev_priv->fsb_freq = 5866; - break; - case 0x018: - dev_priv->fsb_freq = 6400; - break; - default: - drm_dbg(&dev_priv->drm, "unknown fsb frequency 0x%04x\n", - csipll & 0x3ff); - dev_priv->fsb_freq = 0; - break; - } -} - -static const struct cxsr_latency cxsr_latency_table[] = { - {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */ - {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */ - {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */ - {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */ - {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */ - - {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */ - {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */ - {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */ - {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */ - {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */ - - {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */ - {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */ - {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */ - {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */ - {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */ - - {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */ - {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */ - {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */ - {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */ - {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */ - - {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */ - {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */ - {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */ - {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */ - {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */ - - {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */ - {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */ - {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */ - {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */ - {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */ -}; - -static const struct cxsr_latency *intel_get_cxsr_latency(bool is_desktop, - bool is_ddr3, - int fsb, - int mem) -{ - const struct cxsr_latency *latency; - int i; - - if (fsb == 0 || mem == 0) - return NULL; - - for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) { - latency = &cxsr_latency_table[i]; - if (is_desktop == latency->is_desktop && - is_ddr3 == latency->is_ddr3 && - fsb == latency->fsb_freq && mem == latency->mem_freq) - return latency; - } - - DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); - - return NULL; -} - -static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable) -{ - u32 val; - - vlv_punit_get(dev_priv); - - val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); - if (enable) - val &= ~FORCE_DDR_HIGH_FREQ; - else - val |= FORCE_DDR_HIGH_FREQ; - val &= ~FORCE_DDR_LOW_FREQ; - val |= FORCE_DDR_FREQ_REQ_ACK; - vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val); - - if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) & - FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) - drm_err(&dev_priv->drm, - "timed out waiting for Punit DDR DVFS request\n"); - - vlv_punit_put(dev_priv); -} - -static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable) -{ - u32 val; - - vlv_punit_get(dev_priv); - - val = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM); - if (enable) - val |= DSP_MAXFIFO_PM5_ENABLE; - else - val &= ~DSP_MAXFIFO_PM5_ENABLE; - vlv_punit_write(dev_priv, PUNIT_REG_DSPSSPM, val); - - vlv_punit_put(dev_priv); -} - -#define FW_WM(value, plane) \ - (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK) - -static bool _intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable) -{ - bool was_enabled; - u32 val; - - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { - was_enabled = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF_VLV) & FW_CSPWRDWNEN; - intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF_VLV, enable ? FW_CSPWRDWNEN : 0); - intel_uncore_posting_read(&dev_priv->uncore, FW_BLC_SELF_VLV); - } else if (IS_G4X(dev_priv) || IS_I965GM(dev_priv)) { - was_enabled = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF) & FW_BLC_SELF_EN; - intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF, enable ? FW_BLC_SELF_EN : 0); - intel_uncore_posting_read(&dev_priv->uncore, FW_BLC_SELF); - } else if (IS_PINEVIEW(dev_priv)) { - val = intel_uncore_read(&dev_priv->uncore, DSPFW3); - was_enabled = val & PINEVIEW_SELF_REFRESH_EN; - if (enable) - val |= PINEVIEW_SELF_REFRESH_EN; - else - val &= ~PINEVIEW_SELF_REFRESH_EN; - intel_uncore_write(&dev_priv->uncore, DSPFW3, val); - intel_uncore_posting_read(&dev_priv->uncore, DSPFW3); - } else if (IS_I945G(dev_priv) || IS_I945GM(dev_priv)) { - was_enabled = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF) & FW_BLC_SELF_EN; - val = enable ? _MASKED_BIT_ENABLE(FW_BLC_SELF_EN) : - _MASKED_BIT_DISABLE(FW_BLC_SELF_EN); - intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF, val); - intel_uncore_posting_read(&dev_priv->uncore, FW_BLC_SELF); - } else if (IS_I915GM(dev_priv)) { - /* - * FIXME can't find a bit like this for 915G, and - * and yet it does have the related watermark in - * FW_BLC_SELF. What's going on? - */ - was_enabled = intel_uncore_read(&dev_priv->uncore, INSTPM) & INSTPM_SELF_EN; - val = enable ? _MASKED_BIT_ENABLE(INSTPM_SELF_EN) : - _MASKED_BIT_DISABLE(INSTPM_SELF_EN); - intel_uncore_write(&dev_priv->uncore, INSTPM, val); - intel_uncore_posting_read(&dev_priv->uncore, INSTPM); - } else { - return false; - } - - trace_intel_memory_cxsr(dev_priv, was_enabled, enable); - - drm_dbg_kms(&dev_priv->drm, "memory self-refresh is %s (was %s)\n", - enableddisabled(enable), - enableddisabled(was_enabled)); - - return was_enabled; -} - -/** - * intel_set_memory_cxsr - Configure CxSR state - * @dev_priv: i915 device - * @enable: Allow vs. disallow CxSR - * - * Allow or disallow the system to enter a special CxSR - * (C-state self refresh) state. What typically happens in CxSR mode - * is that several display FIFOs may get combined into a single larger - * FIFO for a particular plane (so called max FIFO mode) to allow the - * system to defer memory fetches longer, and the memory will enter - * self refresh. - * - * Note that enabling CxSR does not guarantee that the system enter - * this special mode, nor does it guarantee that the system stays - * in that mode once entered. So this just allows/disallows the system - * to autonomously utilize the CxSR mode. Other factors such as core - * C-states will affect when/if the system actually enters/exits the - * CxSR mode. - * - * Note that on VLV/CHV this actually only controls the max FIFO mode, - * and the system is free to enter/exit memory self refresh at any time - * even when the use of CxSR has been disallowed. - * - * While the system is actually in the CxSR/max FIFO mode, some plane - * control registers will not get latched on vblank. Thus in order to - * guarantee the system will respond to changes in the plane registers - * we must always disallow CxSR prior to making changes to those registers. - * Unfortunately the system will re-evaluate the CxSR conditions at - * frame start which happens after vblank start (which is when the plane - * registers would get latched), so we can't proceed with the plane update - * during the same frame where we disallowed CxSR. - * - * Certain platforms also have a deeper HPLL SR mode. Fortunately the - * HPLL SR mode depends on CxSR itself, so we don't have to hand hold - * the hardware w.r.t. HPLL SR when writing to plane registers. - * Disallowing just CxSR is sufficient. - */ -bool intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable) -{ - bool ret; - - mutex_lock(&dev_priv->wm.wm_mutex); - ret = _intel_set_memory_cxsr(dev_priv, enable); - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) - dev_priv->wm.vlv.cxsr = enable; - else if (IS_G4X(dev_priv)) - dev_priv->wm.g4x.cxsr = enable; - mutex_unlock(&dev_priv->wm.wm_mutex); - - return ret; -} - -/* - * Latency for FIFO fetches is dependent on several factors: - * - memory configuration (speed, channels) - * - chipset - * - current MCH state - * It can be fairly high in some situations, so here we assume a fairly - * pessimal value. It's a tradeoff between extra memory fetches (if we - * set this value too high, the FIFO will fetch frequently to stay full) - * and power consumption (set it too low to save power and we might see - * FIFO underruns and display "flicker"). - * - * A value of 5us seems to be a good balance; safe for very low end - * platforms but not overly aggressive on lower latency configs. - */ -static const int pessimal_latency_ns = 5000; - -#define VLV_FIFO_START(dsparb, dsparb2, lo_shift, hi_shift) \ - ((((dsparb) >> (lo_shift)) & 0xff) | ((((dsparb2) >> (hi_shift)) & 0x1) << 8)) - -static void vlv_get_fifo_size(struct intel_crtc_state *crtc_state) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - struct vlv_fifo_state *fifo_state = &crtc_state->wm.vlv.fifo_state; - enum pipe pipe = crtc->pipe; - int sprite0_start, sprite1_start; - u32 dsparb, dsparb2, dsparb3; - - switch (pipe) { - case PIPE_A: - dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB); - dsparb2 = intel_uncore_read(&dev_priv->uncore, DSPARB2); - sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 0, 0); - sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 8, 4); - break; - case PIPE_B: - dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB); - dsparb2 = intel_uncore_read(&dev_priv->uncore, DSPARB2); - sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 16, 8); - sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 24, 12); - break; - case PIPE_C: - dsparb2 = intel_uncore_read(&dev_priv->uncore, DSPARB2); - dsparb3 = intel_uncore_read(&dev_priv->uncore, DSPARB3); - sprite0_start = VLV_FIFO_START(dsparb3, dsparb2, 0, 16); - sprite1_start = VLV_FIFO_START(dsparb3, dsparb2, 8, 20); - break; - default: - MISSING_CASE(pipe); - return; - } - - fifo_state->plane[PLANE_PRIMARY] = sprite0_start; - fifo_state->plane[PLANE_SPRITE0] = sprite1_start - sprite0_start; - fifo_state->plane[PLANE_SPRITE1] = 511 - sprite1_start; - fifo_state->plane[PLANE_CURSOR] = 63; -} - -static int i9xx_get_fifo_size(struct drm_i915_private *dev_priv, - enum i9xx_plane_id i9xx_plane) -{ - u32 dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB); - int size; - - size = dsparb & 0x7f; - if (i9xx_plane == PLANE_B) - size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size; - - drm_dbg_kms(&dev_priv->drm, "FIFO size - (0x%08x) %c: %d\n", - dsparb, plane_name(i9xx_plane), size); - - return size; -} - -static int i830_get_fifo_size(struct drm_i915_private *dev_priv, - enum i9xx_plane_id i9xx_plane) -{ - u32 dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB); - int size; - - size = dsparb & 0x1ff; - if (i9xx_plane == PLANE_B) - size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size; - size >>= 1; /* Convert to cachelines */ - - drm_dbg_kms(&dev_priv->drm, "FIFO size - (0x%08x) %c: %d\n", - dsparb, plane_name(i9xx_plane), size); - - return size; -} - -static int i845_get_fifo_size(struct drm_i915_private *dev_priv, - enum i9xx_plane_id i9xx_plane) -{ - u32 dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB); - int size; - - size = dsparb & 0x7f; - size >>= 2; /* Convert to cachelines */ - - drm_dbg_kms(&dev_priv->drm, "FIFO size - (0x%08x) %c: %d\n", - dsparb, plane_name(i9xx_plane), size); - - return size; -} - -/* Pineview has different values for various configs */ -static const struct intel_watermark_params pnv_display_wm = { - .fifo_size = PINEVIEW_DISPLAY_FIFO, - .max_wm = PINEVIEW_MAX_WM, - .default_wm = PINEVIEW_DFT_WM, - .guard_size = PINEVIEW_GUARD_WM, - .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, -}; - -static const struct intel_watermark_params pnv_display_hplloff_wm = { - .fifo_size = PINEVIEW_DISPLAY_FIFO, - .max_wm = PINEVIEW_MAX_WM, - .default_wm = PINEVIEW_DFT_HPLLOFF_WM, - .guard_size = PINEVIEW_GUARD_WM, - .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, -}; - -static const struct intel_watermark_params pnv_cursor_wm = { - .fifo_size = PINEVIEW_CURSOR_FIFO, - .max_wm = PINEVIEW_CURSOR_MAX_WM, - .default_wm = PINEVIEW_CURSOR_DFT_WM, - .guard_size = PINEVIEW_CURSOR_GUARD_WM, - .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, -}; - -static const struct intel_watermark_params pnv_cursor_hplloff_wm = { - .fifo_size = PINEVIEW_CURSOR_FIFO, - .max_wm = PINEVIEW_CURSOR_MAX_WM, - .default_wm = PINEVIEW_CURSOR_DFT_WM, - .guard_size = PINEVIEW_CURSOR_GUARD_WM, - .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, -}; - -static const struct intel_watermark_params i965_cursor_wm_info = { - .fifo_size = I965_CURSOR_FIFO, - .max_wm = I965_CURSOR_MAX_WM, - .default_wm = I965_CURSOR_DFT_WM, - .guard_size = 2, - .cacheline_size = I915_FIFO_LINE_SIZE, -}; - -static const struct intel_watermark_params i945_wm_info = { - .fifo_size = I945_FIFO_SIZE, - .max_wm = I915_MAX_WM, - .default_wm = 1, - .guard_size = 2, - .cacheline_size = I915_FIFO_LINE_SIZE, -}; - -static const struct intel_watermark_params i915_wm_info = { - .fifo_size = I915_FIFO_SIZE, - .max_wm = I915_MAX_WM, - .default_wm = 1, - .guard_size = 2, - .cacheline_size = I915_FIFO_LINE_SIZE, -}; - -static const struct intel_watermark_params i830_a_wm_info = { - .fifo_size = I855GM_FIFO_SIZE, - .max_wm = I915_MAX_WM, - .default_wm = 1, - .guard_size = 2, - .cacheline_size = I830_FIFO_LINE_SIZE, -}; - -static const struct intel_watermark_params i830_bc_wm_info = { - .fifo_size = I855GM_FIFO_SIZE, - .max_wm = I915_MAX_WM/2, - .default_wm = 1, - .guard_size = 2, - .cacheline_size = I830_FIFO_LINE_SIZE, -}; - -static const struct intel_watermark_params i845_wm_info = { - .fifo_size = I830_FIFO_SIZE, - .max_wm = I915_MAX_WM, - .default_wm = 1, - .guard_size = 2, - .cacheline_size = I830_FIFO_LINE_SIZE, -}; - -/** - * intel_wm_method1 - Method 1 / "small buffer" watermark formula - * @pixel_rate: Pipe pixel rate in kHz - * @cpp: Plane bytes per pixel - * @latency: Memory wakeup latency in 0.1us units - * - * Compute the watermark using the method 1 or "small buffer" - * formula. The caller may additonally add extra cachelines - * to account for TLB misses and clock crossings. - * - * This method is concerned with the short term drain rate - * of the FIFO, ie. it does not account for blanking periods - * which would effectively reduce the average drain rate across - * a longer period. The name "small" refers to the fact the - * FIFO is relatively small compared to the amount of data - * fetched. - * - * The FIFO level vs. time graph might look something like: - * - * |\ |\ - * | \ | \ - * __---__---__ (- plane active, _ blanking) - * -> time - * - * or perhaps like this: - * - * |\|\ |\|\ - * __----__----__ (- plane active, _ blanking) - * -> time - * - * Returns: - * The watermark in bytes - */ -static unsigned int intel_wm_method1(unsigned int pixel_rate, - unsigned int cpp, - unsigned int latency) -{ - u64 ret; - - ret = mul_u32_u32(pixel_rate, cpp * latency); - ret = DIV_ROUND_UP_ULL(ret, 10000); - - return ret; -} - -/** - * intel_wm_method2 - Method 2 / "large buffer" watermark formula - * @pixel_rate: Pipe pixel rate in kHz - * @htotal: Pipe horizontal total - * @width: Plane width in pixels - * @cpp: Plane bytes per pixel - * @latency: Memory wakeup latency in 0.1us units - * - * Compute the watermark using the method 2 or "large buffer" - * formula. The caller may additonally add extra cachelines - * to account for TLB misses and clock crossings. - * - * This method is concerned with the long term drain rate - * of the FIFO, ie. it does account for blanking periods - * which effectively reduce the average drain rate across - * a longer period. The name "large" refers to the fact the - * FIFO is relatively large compared to the amount of data - * fetched. - * - * The FIFO level vs. time graph might look something like: - * - * |\___ |\___ - * | \___ | \___ - * | \ | \ - * __ --__--__--__--__--__--__ (- plane active, _ blanking) - * -> time - * - * Returns: - * The watermark in bytes - */ -static unsigned int intel_wm_method2(unsigned int pixel_rate, - unsigned int htotal, - unsigned int width, - unsigned int cpp, - unsigned int latency) -{ - unsigned int ret; - - /* - * FIXME remove once all users are computing - * watermarks in the correct place. - */ - if (WARN_ON_ONCE(htotal == 0)) - htotal = 1; - - ret = (latency * pixel_rate) / (htotal * 10000); - ret = (ret + 1) * width * cpp; - - return ret; -} - -/** - * intel_calculate_wm - calculate watermark level - * @pixel_rate: pixel clock - * @wm: chip FIFO params - * @fifo_size: size of the FIFO buffer - * @cpp: bytes per pixel - * @latency_ns: memory latency for the platform - * - * Calculate the watermark level (the level at which the display plane will - * start fetching from memory again). Each chip has a different display - * FIFO size and allocation, so the caller needs to figure that out and pass - * in the correct intel_watermark_params structure. - * - * As the pixel clock runs, the FIFO will be drained at a rate that depends - * on the pixel size. When it reaches the watermark level, it'll start - * fetching FIFO line sized based chunks from memory until the FIFO fills - * past the watermark point. If the FIFO drains completely, a FIFO underrun - * will occur, and a display engine hang could result. - */ -static unsigned int intel_calculate_wm(int pixel_rate, - const struct intel_watermark_params *wm, - int fifo_size, int cpp, - unsigned int latency_ns) -{ - int entries, wm_size; - - /* - * Note: we need to make sure we don't overflow for various clock & - * latency values. - * clocks go from a few thousand to several hundred thousand. - * latency is usually a few thousand - */ - entries = intel_wm_method1(pixel_rate, cpp, - latency_ns / 100); - entries = DIV_ROUND_UP(entries, wm->cacheline_size) + - wm->guard_size; - DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries); - - wm_size = fifo_size - entries; - DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size); - - /* Don't promote wm_size to unsigned... */ - if (wm_size > wm->max_wm) - wm_size = wm->max_wm; - if (wm_size <= 0) - wm_size = wm->default_wm; - - /* - * Bspec seems to indicate that the value shouldn't be lower than - * 'burst size + 1'. Certainly 830 is quite unhappy with low values. - * Lets go for 8 which is the burst size since certain platforms - * already use a hardcoded 8 (which is what the spec says should be - * done). - */ - if (wm_size <= 8) - wm_size = 8; - - return wm_size; -} - -static bool is_disabling(int old, int new, int threshold) -{ - return old >= threshold && new < threshold; -} - -static bool is_enabling(int old, int new, int threshold) -{ - return old < threshold && new >= threshold; -} - -static int intel_wm_num_levels(struct drm_i915_private *dev_priv) -{ - return dev_priv->wm.max_level + 1; -} - -static bool intel_wm_plane_visible(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state) -{ - struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); - - /* FIXME check the 'enable' instead */ - if (!crtc_state->hw.active) - return false; - - /* - * Treat cursor with fb as always visible since cursor updates - * can happen faster than the vrefresh rate, and the current - * watermark code doesn't handle that correctly. Cursor updates - * which set/clear the fb or change the cursor size are going - * to get throttled by intel_legacy_cursor_update() to work - * around this problem with the watermark code. - */ - if (plane->id == PLANE_CURSOR) - return plane_state->hw.fb != NULL; - else - return plane_state->uapi.visible; -} - -static bool intel_crtc_active(struct intel_crtc *crtc) -{ - /* Be paranoid as we can arrive here with only partial - * state retrieved from the hardware during setup. - * - * We can ditch the adjusted_mode.crtc_clock check as soon - * as Haswell has gained clock readout/fastboot support. - * - * We can ditch the crtc->primary->state->fb check as soon as we can - * properly reconstruct framebuffers. - * - * FIXME: The intel_crtc->active here should be switched to - * crtc->state->active once we have proper CRTC states wired up - * for atomic. - */ - return crtc->active && crtc->base.primary->state->fb && - crtc->config->hw.adjusted_mode.crtc_clock; -} - -static struct intel_crtc *single_enabled_crtc(struct drm_i915_private *dev_priv) -{ - struct intel_crtc *crtc, *enabled = NULL; - - for_each_intel_crtc(&dev_priv->drm, crtc) { - if (intel_crtc_active(crtc)) { - if (enabled) - return NULL; - enabled = crtc; - } - } - - return enabled; -} - -static void pnv_update_wm(struct intel_crtc *unused_crtc) -{ - struct drm_i915_private *dev_priv = to_i915(unused_crtc->base.dev); - struct intel_crtc *crtc; - const struct cxsr_latency *latency; - u32 reg; - unsigned int wm; - - latency = intel_get_cxsr_latency(!IS_MOBILE(dev_priv), - dev_priv->is_ddr3, - dev_priv->fsb_freq, - dev_priv->mem_freq); - if (!latency) { - drm_dbg_kms(&dev_priv->drm, - "Unknown FSB/MEM found, disable CxSR\n"); - intel_set_memory_cxsr(dev_priv, false); - return; - } - - crtc = single_enabled_crtc(dev_priv); - if (crtc) { - const struct drm_display_mode *pipe_mode = - &crtc->config->hw.pipe_mode; - const struct drm_framebuffer *fb = - crtc->base.primary->state->fb; - int cpp = fb->format->cpp[0]; - int clock = pipe_mode->crtc_clock; - - /* Display SR */ - wm = intel_calculate_wm(clock, &pnv_display_wm, - pnv_display_wm.fifo_size, - cpp, latency->display_sr); - reg = intel_uncore_read(&dev_priv->uncore, DSPFW1); - reg &= ~DSPFW_SR_MASK; - reg |= FW_WM(wm, SR); - intel_uncore_write(&dev_priv->uncore, DSPFW1, reg); - drm_dbg_kms(&dev_priv->drm, "DSPFW1 register is %x\n", reg); - - /* cursor SR */ - wm = intel_calculate_wm(clock, &pnv_cursor_wm, - pnv_display_wm.fifo_size, - 4, latency->cursor_sr); - reg = intel_uncore_read(&dev_priv->uncore, DSPFW3); - reg &= ~DSPFW_CURSOR_SR_MASK; - reg |= FW_WM(wm, CURSOR_SR); - intel_uncore_write(&dev_priv->uncore, DSPFW3, reg); - - /* Display HPLL off SR */ - wm = intel_calculate_wm(clock, &pnv_display_hplloff_wm, - pnv_display_hplloff_wm.fifo_size, - cpp, latency->display_hpll_disable); - reg = intel_uncore_read(&dev_priv->uncore, DSPFW3); - reg &= ~DSPFW_HPLL_SR_MASK; - reg |= FW_WM(wm, HPLL_SR); - intel_uncore_write(&dev_priv->uncore, DSPFW3, reg); - - /* cursor HPLL off SR */ - wm = intel_calculate_wm(clock, &pnv_cursor_hplloff_wm, - pnv_display_hplloff_wm.fifo_size, - 4, latency->cursor_hpll_disable); - reg = intel_uncore_read(&dev_priv->uncore, DSPFW3); - reg &= ~DSPFW_HPLL_CURSOR_MASK; - reg |= FW_WM(wm, HPLL_CURSOR); - intel_uncore_write(&dev_priv->uncore, DSPFW3, reg); - drm_dbg_kms(&dev_priv->drm, "DSPFW3 register is %x\n", reg); - - intel_set_memory_cxsr(dev_priv, true); - } else { - intel_set_memory_cxsr(dev_priv, false); - } -} - -/* - * Documentation says: - * "If the line size is small, the TLB fetches can get in the way of the - * data fetches, causing some lag in the pixel data return which is not - * accounted for in the above formulas. The following adjustment only - * needs to be applied if eight whole lines fit in the buffer at once. - * The WM is adjusted upwards by the difference between the FIFO size - * and the size of 8 whole lines. This adjustment is always performed - * in the actual pixel depth regardless of whether FBC is enabled or not." - */ -static unsigned int g4x_tlb_miss_wa(int fifo_size, int width, int cpp) -{ - int tlb_miss = fifo_size * 64 - width * cpp * 8; - - return max(0, tlb_miss); -} - -static void g4x_write_wm_values(struct drm_i915_private *dev_priv, - const struct g4x_wm_values *wm) -{ - enum pipe pipe; - - for_each_pipe(dev_priv, pipe) - trace_g4x_wm(intel_get_crtc_for_pipe(dev_priv, pipe), wm); - - intel_uncore_write(&dev_priv->uncore, DSPFW1, - FW_WM(wm->sr.plane, SR) | - FW_WM(wm->pipe[PIPE_B].plane[PLANE_CURSOR], CURSORB) | - FW_WM(wm->pipe[PIPE_B].plane[PLANE_PRIMARY], PLANEB) | - FW_WM(wm->pipe[PIPE_A].plane[PLANE_PRIMARY], PLANEA)); - intel_uncore_write(&dev_priv->uncore, DSPFW2, - (wm->fbc_en ? DSPFW_FBC_SR_EN : 0) | - FW_WM(wm->sr.fbc, FBC_SR) | - FW_WM(wm->hpll.fbc, FBC_HPLL_SR) | - FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE0], SPRITEB) | - FW_WM(wm->pipe[PIPE_A].plane[PLANE_CURSOR], CURSORA) | - FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE0], SPRITEA)); - intel_uncore_write(&dev_priv->uncore, DSPFW3, - (wm->hpll_en ? DSPFW_HPLL_SR_EN : 0) | - FW_WM(wm->sr.cursor, CURSOR_SR) | - FW_WM(wm->hpll.cursor, HPLL_CURSOR) | - FW_WM(wm->hpll.plane, HPLL_SR)); - - intel_uncore_posting_read(&dev_priv->uncore, DSPFW1); -} - -#define FW_WM_VLV(value, plane) \ - (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK_VLV) - -static void vlv_write_wm_values(struct drm_i915_private *dev_priv, - const struct vlv_wm_values *wm) -{ - enum pipe pipe; - - for_each_pipe(dev_priv, pipe) { - trace_vlv_wm(intel_get_crtc_for_pipe(dev_priv, pipe), wm); - - intel_uncore_write(&dev_priv->uncore, VLV_DDL(pipe), - (wm->ddl[pipe].plane[PLANE_CURSOR] << DDL_CURSOR_SHIFT) | - (wm->ddl[pipe].plane[PLANE_SPRITE1] << DDL_SPRITE_SHIFT(1)) | - (wm->ddl[pipe].plane[PLANE_SPRITE0] << DDL_SPRITE_SHIFT(0)) | - (wm->ddl[pipe].plane[PLANE_PRIMARY] << DDL_PLANE_SHIFT)); - } - - /* - * Zero the (unused) WM1 watermarks, and also clear all the - * high order bits so that there are no out of bounds values - * present in the registers during the reprogramming. - */ - intel_uncore_write(&dev_priv->uncore, DSPHOWM, 0); - intel_uncore_write(&dev_priv->uncore, DSPHOWM1, 0); - intel_uncore_write(&dev_priv->uncore, DSPFW4, 0); - intel_uncore_write(&dev_priv->uncore, DSPFW5, 0); - intel_uncore_write(&dev_priv->uncore, DSPFW6, 0); - - intel_uncore_write(&dev_priv->uncore, DSPFW1, - FW_WM(wm->sr.plane, SR) | - FW_WM(wm->pipe[PIPE_B].plane[PLANE_CURSOR], CURSORB) | - FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_PRIMARY], PLANEB) | - FW_WM_VLV(wm->pipe[PIPE_A].plane[PLANE_PRIMARY], PLANEA)); - intel_uncore_write(&dev_priv->uncore, DSPFW2, - FW_WM_VLV(wm->pipe[PIPE_A].plane[PLANE_SPRITE1], SPRITEB) | - FW_WM(wm->pipe[PIPE_A].plane[PLANE_CURSOR], CURSORA) | - FW_WM_VLV(wm->pipe[PIPE_A].plane[PLANE_SPRITE0], SPRITEA)); - intel_uncore_write(&dev_priv->uncore, DSPFW3, - FW_WM(wm->sr.cursor, CURSOR_SR)); - - if (IS_CHERRYVIEW(dev_priv)) { - intel_uncore_write(&dev_priv->uncore, DSPFW7_CHV, - FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE1], SPRITED) | - FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE0], SPRITEC)); - intel_uncore_write(&dev_priv->uncore, DSPFW8_CHV, - FW_WM_VLV(wm->pipe[PIPE_C].plane[PLANE_SPRITE1], SPRITEF) | - FW_WM_VLV(wm->pipe[PIPE_C].plane[PLANE_SPRITE0], SPRITEE)); - intel_uncore_write(&dev_priv->uncore, DSPFW9_CHV, - FW_WM_VLV(wm->pipe[PIPE_C].plane[PLANE_PRIMARY], PLANEC) | - FW_WM(wm->pipe[PIPE_C].plane[PLANE_CURSOR], CURSORC)); - intel_uncore_write(&dev_priv->uncore, DSPHOWM, - FW_WM(wm->sr.plane >> 9, SR_HI) | - FW_WM(wm->pipe[PIPE_C].plane[PLANE_SPRITE1] >> 8, SPRITEF_HI) | - FW_WM(wm->pipe[PIPE_C].plane[PLANE_SPRITE0] >> 8, SPRITEE_HI) | - FW_WM(wm->pipe[PIPE_C].plane[PLANE_PRIMARY] >> 8, PLANEC_HI) | - FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE1] >> 8, SPRITED_HI) | - FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE0] >> 8, SPRITEC_HI) | - FW_WM(wm->pipe[PIPE_B].plane[PLANE_PRIMARY] >> 8, PLANEB_HI) | - FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE1] >> 8, SPRITEB_HI) | - FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE0] >> 8, SPRITEA_HI) | - FW_WM(wm->pipe[PIPE_A].plane[PLANE_PRIMARY] >> 8, PLANEA_HI)); - } else { - intel_uncore_write(&dev_priv->uncore, DSPFW7, - FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE1], SPRITED) | - FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE0], SPRITEC)); - intel_uncore_write(&dev_priv->uncore, DSPHOWM, - FW_WM(wm->sr.plane >> 9, SR_HI) | - FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE1] >> 8, SPRITED_HI) | - FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE0] >> 8, SPRITEC_HI) | - FW_WM(wm->pipe[PIPE_B].plane[PLANE_PRIMARY] >> 8, PLANEB_HI) | - FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE1] >> 8, SPRITEB_HI) | - FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE0] >> 8, SPRITEA_HI) | - FW_WM(wm->pipe[PIPE_A].plane[PLANE_PRIMARY] >> 8, PLANEA_HI)); - } - - intel_uncore_posting_read(&dev_priv->uncore, DSPFW1); -} - -#undef FW_WM_VLV - -static void g4x_setup_wm_latency(struct drm_i915_private *dev_priv) -{ - /* all latencies in usec */ - dev_priv->wm.pri_latency[G4X_WM_LEVEL_NORMAL] = 5; - dev_priv->wm.pri_latency[G4X_WM_LEVEL_SR] = 12; - dev_priv->wm.pri_latency[G4X_WM_LEVEL_HPLL] = 35; - - dev_priv->wm.max_level = G4X_WM_LEVEL_HPLL; -} - -static int g4x_plane_fifo_size(enum plane_id plane_id, int level) -{ - /* - * DSPCNTR[13] supposedly controls whether the - * primary plane can use the FIFO space otherwise - * reserved for the sprite plane. It's not 100% clear - * what the actual FIFO size is, but it looks like we - * can happily set both primary and sprite watermarks - * up to 127 cachelines. So that would seem to mean - * that either DSPCNTR[13] doesn't do anything, or that - * the total FIFO is >= 256 cachelines in size. Either - * way, we don't seem to have to worry about this - * repartitioning as the maximum watermark value the - * register can hold for each plane is lower than the - * minimum FIFO size. - */ - switch (plane_id) { - case PLANE_CURSOR: - return 63; - case PLANE_PRIMARY: - return level == G4X_WM_LEVEL_NORMAL ? 127 : 511; - case PLANE_SPRITE0: - return level == G4X_WM_LEVEL_NORMAL ? 127 : 0; - default: - MISSING_CASE(plane_id); - return 0; - } -} - -static int g4x_fbc_fifo_size(int level) -{ - switch (level) { - case G4X_WM_LEVEL_SR: - return 7; - case G4X_WM_LEVEL_HPLL: - return 15; - default: - MISSING_CASE(level); - return 0; - } -} - -static u16 g4x_compute_wm(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - int level) -{ - struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); - struct drm_i915_private *dev_priv = to_i915(plane->base.dev); - const struct drm_display_mode *pipe_mode = - &crtc_state->hw.pipe_mode; - unsigned int latency = dev_priv->wm.pri_latency[level] * 10; - unsigned int clock, htotal, cpp, width, wm; - - if (latency == 0) - return USHRT_MAX; - - if (!intel_wm_plane_visible(crtc_state, plane_state)) - return 0; - - cpp = plane_state->hw.fb->format->cpp[0]; - - /* - * Not 100% sure which way ELK should go here as the - * spec only says CL/CTG should assume 32bpp and BW - * doesn't need to. But as these things followed the - * mobile vs. desktop lines on gen3 as well, let's - * assume ELK doesn't need this. - * - * The spec also fails to list such a restriction for - * the HPLL watermark, which seems a little strange. - * Let's use 32bpp for the HPLL watermark as well. - */ - if (IS_GM45(dev_priv) && plane->id == PLANE_PRIMARY && - level != G4X_WM_LEVEL_NORMAL) - cpp = max(cpp, 4u); - - clock = pipe_mode->crtc_clock; - htotal = pipe_mode->crtc_htotal; - - width = drm_rect_width(&plane_state->uapi.dst); - - if (plane->id == PLANE_CURSOR) { - wm = intel_wm_method2(clock, htotal, width, cpp, latency); - } else if (plane->id == PLANE_PRIMARY && - level == G4X_WM_LEVEL_NORMAL) { - wm = intel_wm_method1(clock, cpp, latency); - } else { - unsigned int small, large; - - small = intel_wm_method1(clock, cpp, latency); - large = intel_wm_method2(clock, htotal, width, cpp, latency); - - wm = min(small, large); - } - - wm += g4x_tlb_miss_wa(g4x_plane_fifo_size(plane->id, level), - width, cpp); - - wm = DIV_ROUND_UP(wm, 64) + 2; - - return min_t(unsigned int, wm, USHRT_MAX); -} - -static bool g4x_raw_plane_wm_set(struct intel_crtc_state *crtc_state, - int level, enum plane_id plane_id, u16 value) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - bool dirty = false; - - for (; level < intel_wm_num_levels(dev_priv); level++) { - struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level]; - - dirty |= raw->plane[plane_id] != value; - raw->plane[plane_id] = value; - } - - return dirty; -} - -static bool g4x_raw_fbc_wm_set(struct intel_crtc_state *crtc_state, - int level, u16 value) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - bool dirty = false; - - /* NORMAL level doesn't have an FBC watermark */ - level = max(level, G4X_WM_LEVEL_SR); - - for (; level < intel_wm_num_levels(dev_priv); level++) { - struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level]; - - dirty |= raw->fbc != value; - raw->fbc = value; - } - - return dirty; -} - -static u32 ilk_compute_fbc_wm(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - u32 pri_val); - -static bool g4x_raw_plane_wm_compute(struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state) -{ - struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - int num_levels = intel_wm_num_levels(to_i915(plane->base.dev)); - enum plane_id plane_id = plane->id; - bool dirty = false; - int level; - - if (!intel_wm_plane_visible(crtc_state, plane_state)) { - dirty |= g4x_raw_plane_wm_set(crtc_state, 0, plane_id, 0); - if (plane_id == PLANE_PRIMARY) - dirty |= g4x_raw_fbc_wm_set(crtc_state, 0, 0); - goto out; - } - - for (level = 0; level < num_levels; level++) { - struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level]; - int wm, max_wm; - - wm = g4x_compute_wm(crtc_state, plane_state, level); - max_wm = g4x_plane_fifo_size(plane_id, level); - - if (wm > max_wm) - break; - - dirty |= raw->plane[plane_id] != wm; - raw->plane[plane_id] = wm; - - if (plane_id != PLANE_PRIMARY || - level == G4X_WM_LEVEL_NORMAL) - continue; - - wm = ilk_compute_fbc_wm(crtc_state, plane_state, - raw->plane[plane_id]); - max_wm = g4x_fbc_fifo_size(level); - - /* - * FBC wm is not mandatory as we - * can always just disable its use. - */ - if (wm > max_wm) - wm = USHRT_MAX; - - dirty |= raw->fbc != wm; - raw->fbc = wm; - } - - /* mark watermarks as invalid */ - dirty |= g4x_raw_plane_wm_set(crtc_state, level, plane_id, USHRT_MAX); - - if (plane_id == PLANE_PRIMARY) - dirty |= g4x_raw_fbc_wm_set(crtc_state, level, USHRT_MAX); - - out: - if (dirty) { - drm_dbg_kms(&dev_priv->drm, - "%s watermarks: normal=%d, SR=%d, HPLL=%d\n", - plane->base.name, - crtc_state->wm.g4x.raw[G4X_WM_LEVEL_NORMAL].plane[plane_id], - crtc_state->wm.g4x.raw[G4X_WM_LEVEL_SR].plane[plane_id], - crtc_state->wm.g4x.raw[G4X_WM_LEVEL_HPLL].plane[plane_id]); - - if (plane_id == PLANE_PRIMARY) - drm_dbg_kms(&dev_priv->drm, - "FBC watermarks: SR=%d, HPLL=%d\n", - crtc_state->wm.g4x.raw[G4X_WM_LEVEL_SR].fbc, - crtc_state->wm.g4x.raw[G4X_WM_LEVEL_HPLL].fbc); - } - - return dirty; -} - -static bool g4x_raw_plane_wm_is_valid(const struct intel_crtc_state *crtc_state, - enum plane_id plane_id, int level) -{ - const struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level]; - - return raw->plane[plane_id] <= g4x_plane_fifo_size(plane_id, level); -} - -static bool g4x_raw_crtc_wm_is_valid(const struct intel_crtc_state *crtc_state, - int level) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - - if (level > dev_priv->wm.max_level) - return false; - - return g4x_raw_plane_wm_is_valid(crtc_state, PLANE_PRIMARY, level) && - g4x_raw_plane_wm_is_valid(crtc_state, PLANE_SPRITE0, level) && - g4x_raw_plane_wm_is_valid(crtc_state, PLANE_CURSOR, level); -} - -/* mark all levels starting from 'level' as invalid */ -static void g4x_invalidate_wms(struct intel_crtc *crtc, - struct g4x_wm_state *wm_state, int level) -{ - if (level <= G4X_WM_LEVEL_NORMAL) { - enum plane_id plane_id; - - for_each_plane_id_on_crtc(crtc, plane_id) - wm_state->wm.plane[plane_id] = USHRT_MAX; - } - - if (level <= G4X_WM_LEVEL_SR) { - wm_state->cxsr = false; - wm_state->sr.cursor = USHRT_MAX; - wm_state->sr.plane = USHRT_MAX; - wm_state->sr.fbc = USHRT_MAX; - } - - if (level <= G4X_WM_LEVEL_HPLL) { - wm_state->hpll_en = false; - wm_state->hpll.cursor = USHRT_MAX; - wm_state->hpll.plane = USHRT_MAX; - wm_state->hpll.fbc = USHRT_MAX; - } -} - -static bool g4x_compute_fbc_en(const struct g4x_wm_state *wm_state, - int level) -{ - if (level < G4X_WM_LEVEL_SR) - return false; - - if (level >= G4X_WM_LEVEL_SR && - wm_state->sr.fbc > g4x_fbc_fifo_size(G4X_WM_LEVEL_SR)) - return false; - - if (level >= G4X_WM_LEVEL_HPLL && - wm_state->hpll.fbc > g4x_fbc_fifo_size(G4X_WM_LEVEL_HPLL)) - return false; - - return true; -} - -static int g4x_compute_pipe_wm(struct intel_crtc_state *crtc_state) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct intel_atomic_state *state = - to_intel_atomic_state(crtc_state->uapi.state); - struct g4x_wm_state *wm_state = &crtc_state->wm.g4x.optimal; - int num_active_planes = hweight8(crtc_state->active_planes & - ~BIT(PLANE_CURSOR)); - const struct g4x_pipe_wm *raw; - const struct intel_plane_state *old_plane_state; - const struct intel_plane_state *new_plane_state; - struct intel_plane *plane; - enum plane_id plane_id; - int i, level; - unsigned int dirty = 0; - - for_each_oldnew_intel_plane_in_state(state, plane, - old_plane_state, - new_plane_state, i) { - if (new_plane_state->hw.crtc != &crtc->base && - old_plane_state->hw.crtc != &crtc->base) - continue; - - if (g4x_raw_plane_wm_compute(crtc_state, new_plane_state)) - dirty |= BIT(plane->id); - } - - if (!dirty) - return 0; - - level = G4X_WM_LEVEL_NORMAL; - if (!g4x_raw_crtc_wm_is_valid(crtc_state, level)) - goto out; - - raw = &crtc_state->wm.g4x.raw[level]; - for_each_plane_id_on_crtc(crtc, plane_id) - wm_state->wm.plane[plane_id] = raw->plane[plane_id]; - - level = G4X_WM_LEVEL_SR; - if (!g4x_raw_crtc_wm_is_valid(crtc_state, level)) - goto out; - - raw = &crtc_state->wm.g4x.raw[level]; - wm_state->sr.plane = raw->plane[PLANE_PRIMARY]; - wm_state->sr.cursor = raw->plane[PLANE_CURSOR]; - wm_state->sr.fbc = raw->fbc; - - wm_state->cxsr = num_active_planes == BIT(PLANE_PRIMARY); - - level = G4X_WM_LEVEL_HPLL; - if (!g4x_raw_crtc_wm_is_valid(crtc_state, level)) - goto out; - - raw = &crtc_state->wm.g4x.raw[level]; - wm_state->hpll.plane = raw->plane[PLANE_PRIMARY]; - wm_state->hpll.cursor = raw->plane[PLANE_CURSOR]; - wm_state->hpll.fbc = raw->fbc; - - wm_state->hpll_en = wm_state->cxsr; - - level++; - - out: - if (level == G4X_WM_LEVEL_NORMAL) - return -EINVAL; - - /* invalidate the higher levels */ - g4x_invalidate_wms(crtc, wm_state, level); - - /* - * Determine if the FBC watermark(s) can be used. IF - * this isn't the case we prefer to disable the FBC - * watermark(s) rather than disable the SR/HPLL - * level(s) entirely. 'level-1' is the highest valid - * level here. - */ - wm_state->fbc_en = g4x_compute_fbc_en(wm_state, level - 1); - - return 0; -} - -static int g4x_compute_intermediate_wm(struct intel_crtc_state *new_crtc_state) -{ - struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - struct g4x_wm_state *intermediate = &new_crtc_state->wm.g4x.intermediate; - const struct g4x_wm_state *optimal = &new_crtc_state->wm.g4x.optimal; - struct intel_atomic_state *intel_state = - to_intel_atomic_state(new_crtc_state->uapi.state); - const struct intel_crtc_state *old_crtc_state = - intel_atomic_get_old_crtc_state(intel_state, crtc); - const struct g4x_wm_state *active = &old_crtc_state->wm.g4x.optimal; - enum plane_id plane_id; - - if (!new_crtc_state->hw.active || drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi)) { - *intermediate = *optimal; - - intermediate->cxsr = false; - intermediate->hpll_en = false; - goto out; - } - - intermediate->cxsr = optimal->cxsr && active->cxsr && - !new_crtc_state->disable_cxsr; - intermediate->hpll_en = optimal->hpll_en && active->hpll_en && - !new_crtc_state->disable_cxsr; - intermediate->fbc_en = optimal->fbc_en && active->fbc_en; - - for_each_plane_id_on_crtc(crtc, plane_id) { - intermediate->wm.plane[plane_id] = - max(optimal->wm.plane[plane_id], - active->wm.plane[plane_id]); - - drm_WARN_ON(&dev_priv->drm, intermediate->wm.plane[plane_id] > - g4x_plane_fifo_size(plane_id, G4X_WM_LEVEL_NORMAL)); - } - - intermediate->sr.plane = max(optimal->sr.plane, - active->sr.plane); - intermediate->sr.cursor = max(optimal->sr.cursor, - active->sr.cursor); - intermediate->sr.fbc = max(optimal->sr.fbc, - active->sr.fbc); - - intermediate->hpll.plane = max(optimal->hpll.plane, - active->hpll.plane); - intermediate->hpll.cursor = max(optimal->hpll.cursor, - active->hpll.cursor); - intermediate->hpll.fbc = max(optimal->hpll.fbc, - active->hpll.fbc); - - drm_WARN_ON(&dev_priv->drm, - (intermediate->sr.plane > - g4x_plane_fifo_size(PLANE_PRIMARY, G4X_WM_LEVEL_SR) || - intermediate->sr.cursor > - g4x_plane_fifo_size(PLANE_CURSOR, G4X_WM_LEVEL_SR)) && - intermediate->cxsr); - drm_WARN_ON(&dev_priv->drm, - (intermediate->sr.plane > - g4x_plane_fifo_size(PLANE_PRIMARY, G4X_WM_LEVEL_HPLL) || - intermediate->sr.cursor > - g4x_plane_fifo_size(PLANE_CURSOR, G4X_WM_LEVEL_HPLL)) && - intermediate->hpll_en); - - drm_WARN_ON(&dev_priv->drm, - intermediate->sr.fbc > g4x_fbc_fifo_size(1) && - intermediate->fbc_en && intermediate->cxsr); - drm_WARN_ON(&dev_priv->drm, - intermediate->hpll.fbc > g4x_fbc_fifo_size(2) && - intermediate->fbc_en && intermediate->hpll_en); - -out: - /* - * If our intermediate WM are identical to the final WM, then we can - * omit the post-vblank programming; only update if it's different. - */ - if (memcmp(intermediate, optimal, sizeof(*intermediate)) != 0) - new_crtc_state->wm.need_postvbl_update = true; - - return 0; -} - -static void g4x_merge_wm(struct drm_i915_private *dev_priv, - struct g4x_wm_values *wm) -{ - struct intel_crtc *crtc; - int num_active_pipes = 0; - - wm->cxsr = true; - wm->hpll_en = true; - wm->fbc_en = true; - - for_each_intel_crtc(&dev_priv->drm, crtc) { - const struct g4x_wm_state *wm_state = &crtc->wm.active.g4x; - - if (!crtc->active) - continue; - - if (!wm_state->cxsr) - wm->cxsr = false; - if (!wm_state->hpll_en) - wm->hpll_en = false; - if (!wm_state->fbc_en) - wm->fbc_en = false; - - num_active_pipes++; - } - - if (num_active_pipes != 1) { - wm->cxsr = false; - wm->hpll_en = false; - wm->fbc_en = false; - } - - for_each_intel_crtc(&dev_priv->drm, crtc) { - const struct g4x_wm_state *wm_state = &crtc->wm.active.g4x; - enum pipe pipe = crtc->pipe; - - wm->pipe[pipe] = wm_state->wm; - if (crtc->active && wm->cxsr) - wm->sr = wm_state->sr; - if (crtc->active && wm->hpll_en) - wm->hpll = wm_state->hpll; - } -} - -static void g4x_program_watermarks(struct drm_i915_private *dev_priv) -{ - struct g4x_wm_values *old_wm = &dev_priv->wm.g4x; - struct g4x_wm_values new_wm = {}; - - g4x_merge_wm(dev_priv, &new_wm); - - if (memcmp(old_wm, &new_wm, sizeof(new_wm)) == 0) - return; - - if (is_disabling(old_wm->cxsr, new_wm.cxsr, true)) - _intel_set_memory_cxsr(dev_priv, false); - - g4x_write_wm_values(dev_priv, &new_wm); - - if (is_enabling(old_wm->cxsr, new_wm.cxsr, true)) - _intel_set_memory_cxsr(dev_priv, true); - - *old_wm = new_wm; -} - -static void g4x_initial_watermarks(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - const struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - - mutex_lock(&dev_priv->wm.wm_mutex); - crtc->wm.active.g4x = crtc_state->wm.g4x.intermediate; - g4x_program_watermarks(dev_priv); - mutex_unlock(&dev_priv->wm.wm_mutex); -} - -static void g4x_optimize_watermarks(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - const struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - - if (!crtc_state->wm.need_postvbl_update) - return; - - mutex_lock(&dev_priv->wm.wm_mutex); - crtc->wm.active.g4x = crtc_state->wm.g4x.optimal; - g4x_program_watermarks(dev_priv); - mutex_unlock(&dev_priv->wm.wm_mutex); -} - -/* latency must be in 0.1us units. */ -static unsigned int vlv_wm_method2(unsigned int pixel_rate, - unsigned int htotal, - unsigned int width, - unsigned int cpp, - unsigned int latency) -{ - unsigned int ret; - - ret = intel_wm_method2(pixel_rate, htotal, - width, cpp, latency); - ret = DIV_ROUND_UP(ret, 64); - - return ret; -} - -static void vlv_setup_wm_latency(struct drm_i915_private *dev_priv) -{ - /* all latencies in usec */ - dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM2] = 3; - - dev_priv->wm.max_level = VLV_WM_LEVEL_PM2; - - if (IS_CHERRYVIEW(dev_priv)) { - dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM5] = 12; - dev_priv->wm.pri_latency[VLV_WM_LEVEL_DDR_DVFS] = 33; - - dev_priv->wm.max_level = VLV_WM_LEVEL_DDR_DVFS; - } -} - -static u16 vlv_compute_wm_level(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - int level) -{ - struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); - struct drm_i915_private *dev_priv = to_i915(plane->base.dev); - const struct drm_display_mode *pipe_mode = - &crtc_state->hw.pipe_mode; - unsigned int clock, htotal, cpp, width, wm; - - if (dev_priv->wm.pri_latency[level] == 0) - return USHRT_MAX; - - if (!intel_wm_plane_visible(crtc_state, plane_state)) - return 0; - - cpp = plane_state->hw.fb->format->cpp[0]; - clock = pipe_mode->crtc_clock; - htotal = pipe_mode->crtc_htotal; - width = crtc_state->pipe_src_w; - - if (plane->id == PLANE_CURSOR) { - /* - * FIXME the formula gives values that are - * too big for the cursor FIFO, and hence we - * would never be able to use cursors. For - * now just hardcode the watermark. - */ - wm = 63; - } else { - wm = vlv_wm_method2(clock, htotal, width, cpp, - dev_priv->wm.pri_latency[level] * 10); - } - - return min_t(unsigned int, wm, USHRT_MAX); -} - -static bool vlv_need_sprite0_fifo_workaround(unsigned int active_planes) -{ - return (active_planes & (BIT(PLANE_SPRITE0) | - BIT(PLANE_SPRITE1))) == BIT(PLANE_SPRITE1); -} - -static int vlv_compute_fifo(struct intel_crtc_state *crtc_state) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - const struct g4x_pipe_wm *raw = - &crtc_state->wm.vlv.raw[VLV_WM_LEVEL_PM2]; - struct vlv_fifo_state *fifo_state = &crtc_state->wm.vlv.fifo_state; - unsigned int active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR); - int num_active_planes = hweight8(active_planes); - const int fifo_size = 511; - int fifo_extra, fifo_left = fifo_size; - int sprite0_fifo_extra = 0; - unsigned int total_rate; - enum plane_id plane_id; - - /* - * When enabling sprite0 after sprite1 has already been enabled - * we tend to get an underrun unless sprite0 already has some - * FIFO space allcoated. Hence we always allocate at least one - * cacheline for sprite0 whenever sprite1 is enabled. - * - * All other plane enable sequences appear immune to this problem. - */ - if (vlv_need_sprite0_fifo_workaround(active_planes)) - sprite0_fifo_extra = 1; - - total_rate = raw->plane[PLANE_PRIMARY] + - raw->plane[PLANE_SPRITE0] + - raw->plane[PLANE_SPRITE1] + - sprite0_fifo_extra; - - if (total_rate > fifo_size) - return -EINVAL; - - if (total_rate == 0) - total_rate = 1; - - for_each_plane_id_on_crtc(crtc, plane_id) { - unsigned int rate; - - if ((active_planes & BIT(plane_id)) == 0) { - fifo_state->plane[plane_id] = 0; - continue; - } - - rate = raw->plane[plane_id]; - fifo_state->plane[plane_id] = fifo_size * rate / total_rate; - fifo_left -= fifo_state->plane[plane_id]; - } - - fifo_state->plane[PLANE_SPRITE0] += sprite0_fifo_extra; - fifo_left -= sprite0_fifo_extra; - - fifo_state->plane[PLANE_CURSOR] = 63; - - fifo_extra = DIV_ROUND_UP(fifo_left, num_active_planes ?: 1); - - /* spread the remainder evenly */ - for_each_plane_id_on_crtc(crtc, plane_id) { - int plane_extra; - - if (fifo_left == 0) - break; - - if ((active_planes & BIT(plane_id)) == 0) - continue; - - plane_extra = min(fifo_extra, fifo_left); - fifo_state->plane[plane_id] += plane_extra; - fifo_left -= plane_extra; - } - - drm_WARN_ON(&dev_priv->drm, active_planes != 0 && fifo_left != 0); - - /* give it all to the first plane if none are active */ - if (active_planes == 0) { - drm_WARN_ON(&dev_priv->drm, fifo_left != fifo_size); - fifo_state->plane[PLANE_PRIMARY] = fifo_left; - } - - return 0; -} - -/* mark all levels starting from 'level' as invalid */ -static void vlv_invalidate_wms(struct intel_crtc *crtc, - struct vlv_wm_state *wm_state, int level) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - - for (; level < intel_wm_num_levels(dev_priv); level++) { - enum plane_id plane_id; - - for_each_plane_id_on_crtc(crtc, plane_id) - wm_state->wm[level].plane[plane_id] = USHRT_MAX; - - wm_state->sr[level].cursor = USHRT_MAX; - wm_state->sr[level].plane = USHRT_MAX; - } -} - -static u16 vlv_invert_wm_value(u16 wm, u16 fifo_size) -{ - if (wm > fifo_size) - return USHRT_MAX; - else - return fifo_size - wm; -} - -/* - * Starting from 'level' set all higher - * levels to 'value' in the "raw" watermarks. - */ -static bool vlv_raw_plane_wm_set(struct intel_crtc_state *crtc_state, - int level, enum plane_id plane_id, u16 value) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - int num_levels = intel_wm_num_levels(dev_priv); - bool dirty = false; - - for (; level < num_levels; level++) { - struct g4x_pipe_wm *raw = &crtc_state->wm.vlv.raw[level]; - - dirty |= raw->plane[plane_id] != value; - raw->plane[plane_id] = value; - } - - return dirty; -} - -static bool vlv_raw_plane_wm_compute(struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state) -{ - struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - enum plane_id plane_id = plane->id; - int num_levels = intel_wm_num_levels(to_i915(plane->base.dev)); - int level; - bool dirty = false; - - if (!intel_wm_plane_visible(crtc_state, plane_state)) { - dirty |= vlv_raw_plane_wm_set(crtc_state, 0, plane_id, 0); - goto out; - } - - for (level = 0; level < num_levels; level++) { - struct g4x_pipe_wm *raw = &crtc_state->wm.vlv.raw[level]; - int wm = vlv_compute_wm_level(crtc_state, plane_state, level); - int max_wm = plane_id == PLANE_CURSOR ? 63 : 511; - - if (wm > max_wm) - break; - - dirty |= raw->plane[plane_id] != wm; - raw->plane[plane_id] = wm; - } - - /* mark all higher levels as invalid */ - dirty |= vlv_raw_plane_wm_set(crtc_state, level, plane_id, USHRT_MAX); - -out: - if (dirty) - drm_dbg_kms(&dev_priv->drm, - "%s watermarks: PM2=%d, PM5=%d, DDR DVFS=%d\n", - plane->base.name, - crtc_state->wm.vlv.raw[VLV_WM_LEVEL_PM2].plane[plane_id], - crtc_state->wm.vlv.raw[VLV_WM_LEVEL_PM5].plane[plane_id], - crtc_state->wm.vlv.raw[VLV_WM_LEVEL_DDR_DVFS].plane[plane_id]); - - return dirty; -} - -static bool vlv_raw_plane_wm_is_valid(const struct intel_crtc_state *crtc_state, - enum plane_id plane_id, int level) -{ - const struct g4x_pipe_wm *raw = - &crtc_state->wm.vlv.raw[level]; - const struct vlv_fifo_state *fifo_state = - &crtc_state->wm.vlv.fifo_state; - - return raw->plane[plane_id] <= fifo_state->plane[plane_id]; -} - -static bool vlv_raw_crtc_wm_is_valid(const struct intel_crtc_state *crtc_state, int level) -{ - return vlv_raw_plane_wm_is_valid(crtc_state, PLANE_PRIMARY, level) && - vlv_raw_plane_wm_is_valid(crtc_state, PLANE_SPRITE0, level) && - vlv_raw_plane_wm_is_valid(crtc_state, PLANE_SPRITE1, level) && - vlv_raw_plane_wm_is_valid(crtc_state, PLANE_CURSOR, level); -} - -static int vlv_compute_pipe_wm(struct intel_crtc_state *crtc_state) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - struct intel_atomic_state *state = - to_intel_atomic_state(crtc_state->uapi.state); - struct vlv_wm_state *wm_state = &crtc_state->wm.vlv.optimal; - const struct vlv_fifo_state *fifo_state = - &crtc_state->wm.vlv.fifo_state; - int num_active_planes = hweight8(crtc_state->active_planes & - ~BIT(PLANE_CURSOR)); - bool needs_modeset = drm_atomic_crtc_needs_modeset(&crtc_state->uapi); - const struct intel_plane_state *old_plane_state; - const struct intel_plane_state *new_plane_state; - struct intel_plane *plane; - enum plane_id plane_id; - int level, ret, i; - unsigned int dirty = 0; - - for_each_oldnew_intel_plane_in_state(state, plane, - old_plane_state, - new_plane_state, i) { - if (new_plane_state->hw.crtc != &crtc->base && - old_plane_state->hw.crtc != &crtc->base) - continue; - - if (vlv_raw_plane_wm_compute(crtc_state, new_plane_state)) - dirty |= BIT(plane->id); - } - - /* - * DSPARB registers may have been reset due to the - * power well being turned off. Make sure we restore - * them to a consistent state even if no primary/sprite - * planes are initially active. - */ - if (needs_modeset) - crtc_state->fifo_changed = true; - - if (!dirty) - return 0; - - /* cursor changes don't warrant a FIFO recompute */ - if (dirty & ~BIT(PLANE_CURSOR)) { - const struct intel_crtc_state *old_crtc_state = - intel_atomic_get_old_crtc_state(state, crtc); - const struct vlv_fifo_state *old_fifo_state = - &old_crtc_state->wm.vlv.fifo_state; - - ret = vlv_compute_fifo(crtc_state); - if (ret) - return ret; - - if (needs_modeset || - memcmp(old_fifo_state, fifo_state, - sizeof(*fifo_state)) != 0) - crtc_state->fifo_changed = true; - } - - /* initially allow all levels */ - wm_state->num_levels = intel_wm_num_levels(dev_priv); - /* - * Note that enabling cxsr with no primary/sprite planes - * enabled can wedge the pipe. Hence we only allow cxsr - * with exactly one enabled primary/sprite plane. - */ - wm_state->cxsr = crtc->pipe != PIPE_C && num_active_planes == 1; - - for (level = 0; level < wm_state->num_levels; level++) { - const struct g4x_pipe_wm *raw = &crtc_state->wm.vlv.raw[level]; - const int sr_fifo_size = INTEL_NUM_PIPES(dev_priv) * 512 - 1; - - if (!vlv_raw_crtc_wm_is_valid(crtc_state, level)) - break; - - for_each_plane_id_on_crtc(crtc, plane_id) { - wm_state->wm[level].plane[plane_id] = - vlv_invert_wm_value(raw->plane[plane_id], - fifo_state->plane[plane_id]); - } - - wm_state->sr[level].plane = - vlv_invert_wm_value(max3(raw->plane[PLANE_PRIMARY], - raw->plane[PLANE_SPRITE0], - raw->plane[PLANE_SPRITE1]), - sr_fifo_size); - - wm_state->sr[level].cursor = - vlv_invert_wm_value(raw->plane[PLANE_CURSOR], - 63); - } - - if (level == 0) - return -EINVAL; - - /* limit to only levels we can actually handle */ - wm_state->num_levels = level; - - /* invalidate the higher levels */ - vlv_invalidate_wms(crtc, wm_state, level); - - return 0; -} - -#define VLV_FIFO(plane, value) \ - (((value) << DSPARB_ ## plane ## _SHIFT_VLV) & DSPARB_ ## plane ## _MASK_VLV) - -static void vlv_atomic_update_fifo(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - struct intel_uncore *uncore = &dev_priv->uncore; - const struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - const struct vlv_fifo_state *fifo_state = - &crtc_state->wm.vlv.fifo_state; - int sprite0_start, sprite1_start, fifo_size; - u32 dsparb, dsparb2, dsparb3; - - if (!crtc_state->fifo_changed) - return; - - sprite0_start = fifo_state->plane[PLANE_PRIMARY]; - sprite1_start = fifo_state->plane[PLANE_SPRITE0] + sprite0_start; - fifo_size = fifo_state->plane[PLANE_SPRITE1] + sprite1_start; - - drm_WARN_ON(&dev_priv->drm, fifo_state->plane[PLANE_CURSOR] != 63); - drm_WARN_ON(&dev_priv->drm, fifo_size != 511); - - trace_vlv_fifo_size(crtc, sprite0_start, sprite1_start, fifo_size); - - /* - * uncore.lock serves a double purpose here. It allows us to - * use the less expensive I915_{READ,WRITE}_FW() functions, and - * it protects the DSPARB registers from getting clobbered by - * parallel updates from multiple pipes. - * - * intel_pipe_update_start() has already disabled interrupts - * for us, so a plain spin_lock() is sufficient here. - */ - spin_lock(&uncore->lock); - - switch (crtc->pipe) { - case PIPE_A: - dsparb = intel_uncore_read_fw(uncore, DSPARB); - dsparb2 = intel_uncore_read_fw(uncore, DSPARB2); - - dsparb &= ~(VLV_FIFO(SPRITEA, 0xff) | - VLV_FIFO(SPRITEB, 0xff)); - dsparb |= (VLV_FIFO(SPRITEA, sprite0_start) | - VLV_FIFO(SPRITEB, sprite1_start)); - - dsparb2 &= ~(VLV_FIFO(SPRITEA_HI, 0x1) | - VLV_FIFO(SPRITEB_HI, 0x1)); - dsparb2 |= (VLV_FIFO(SPRITEA_HI, sprite0_start >> 8) | - VLV_FIFO(SPRITEB_HI, sprite1_start >> 8)); - - intel_uncore_write_fw(uncore, DSPARB, dsparb); - intel_uncore_write_fw(uncore, DSPARB2, dsparb2); - break; - case PIPE_B: - dsparb = intel_uncore_read_fw(uncore, DSPARB); - dsparb2 = intel_uncore_read_fw(uncore, DSPARB2); - - dsparb &= ~(VLV_FIFO(SPRITEC, 0xff) | - VLV_FIFO(SPRITED, 0xff)); - dsparb |= (VLV_FIFO(SPRITEC, sprite0_start) | - VLV_FIFO(SPRITED, sprite1_start)); - - dsparb2 &= ~(VLV_FIFO(SPRITEC_HI, 0xff) | - VLV_FIFO(SPRITED_HI, 0xff)); - dsparb2 |= (VLV_FIFO(SPRITEC_HI, sprite0_start >> 8) | - VLV_FIFO(SPRITED_HI, sprite1_start >> 8)); - - intel_uncore_write_fw(uncore, DSPARB, dsparb); - intel_uncore_write_fw(uncore, DSPARB2, dsparb2); - break; - case PIPE_C: - dsparb3 = intel_uncore_read_fw(uncore, DSPARB3); - dsparb2 = intel_uncore_read_fw(uncore, DSPARB2); - - dsparb3 &= ~(VLV_FIFO(SPRITEE, 0xff) | - VLV_FIFO(SPRITEF, 0xff)); - dsparb3 |= (VLV_FIFO(SPRITEE, sprite0_start) | - VLV_FIFO(SPRITEF, sprite1_start)); - - dsparb2 &= ~(VLV_FIFO(SPRITEE_HI, 0xff) | - VLV_FIFO(SPRITEF_HI, 0xff)); - dsparb2 |= (VLV_FIFO(SPRITEE_HI, sprite0_start >> 8) | - VLV_FIFO(SPRITEF_HI, sprite1_start >> 8)); - - intel_uncore_write_fw(uncore, DSPARB3, dsparb3); - intel_uncore_write_fw(uncore, DSPARB2, dsparb2); - break; - default: - break; - } - - intel_uncore_posting_read_fw(uncore, DSPARB); - - spin_unlock(&uncore->lock); -} - -#undef VLV_FIFO - -static int vlv_compute_intermediate_wm(struct intel_crtc_state *new_crtc_state) -{ - struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc); - struct vlv_wm_state *intermediate = &new_crtc_state->wm.vlv.intermediate; - const struct vlv_wm_state *optimal = &new_crtc_state->wm.vlv.optimal; - struct intel_atomic_state *intel_state = - to_intel_atomic_state(new_crtc_state->uapi.state); - const struct intel_crtc_state *old_crtc_state = - intel_atomic_get_old_crtc_state(intel_state, crtc); - const struct vlv_wm_state *active = &old_crtc_state->wm.vlv.optimal; - int level; - - if (!new_crtc_state->hw.active || drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi)) { - *intermediate = *optimal; - - intermediate->cxsr = false; - goto out; - } - - intermediate->num_levels = min(optimal->num_levels, active->num_levels); - intermediate->cxsr = optimal->cxsr && active->cxsr && - !new_crtc_state->disable_cxsr; - - for (level = 0; level < intermediate->num_levels; level++) { - enum plane_id plane_id; - - for_each_plane_id_on_crtc(crtc, plane_id) { - intermediate->wm[level].plane[plane_id] = - min(optimal->wm[level].plane[plane_id], - active->wm[level].plane[plane_id]); - } - - intermediate->sr[level].plane = min(optimal->sr[level].plane, - active->sr[level].plane); - intermediate->sr[level].cursor = min(optimal->sr[level].cursor, - active->sr[level].cursor); - } - - vlv_invalidate_wms(crtc, intermediate, level); - -out: - /* - * If our intermediate WM are identical to the final WM, then we can - * omit the post-vblank programming; only update if it's different. - */ - if (memcmp(intermediate, optimal, sizeof(*intermediate)) != 0) - new_crtc_state->wm.need_postvbl_update = true; - - return 0; -} - -static void vlv_merge_wm(struct drm_i915_private *dev_priv, - struct vlv_wm_values *wm) -{ - struct intel_crtc *crtc; - int num_active_pipes = 0; - - wm->level = dev_priv->wm.max_level; - wm->cxsr = true; - - for_each_intel_crtc(&dev_priv->drm, crtc) { - const struct vlv_wm_state *wm_state = &crtc->wm.active.vlv; - - if (!crtc->active) - continue; - - if (!wm_state->cxsr) - wm->cxsr = false; - - num_active_pipes++; - wm->level = min_t(int, wm->level, wm_state->num_levels - 1); - } - - if (num_active_pipes != 1) - wm->cxsr = false; - - if (num_active_pipes > 1) - wm->level = VLV_WM_LEVEL_PM2; - - for_each_intel_crtc(&dev_priv->drm, crtc) { - const struct vlv_wm_state *wm_state = &crtc->wm.active.vlv; - enum pipe pipe = crtc->pipe; - - wm->pipe[pipe] = wm_state->wm[wm->level]; - if (crtc->active && wm->cxsr) - wm->sr = wm_state->sr[wm->level]; - - wm->ddl[pipe].plane[PLANE_PRIMARY] = DDL_PRECISION_HIGH | 2; - wm->ddl[pipe].plane[PLANE_SPRITE0] = DDL_PRECISION_HIGH | 2; - wm->ddl[pipe].plane[PLANE_SPRITE1] = DDL_PRECISION_HIGH | 2; - wm->ddl[pipe].plane[PLANE_CURSOR] = DDL_PRECISION_HIGH | 2; - } -} - -static void vlv_program_watermarks(struct drm_i915_private *dev_priv) -{ - struct vlv_wm_values *old_wm = &dev_priv->wm.vlv; - struct vlv_wm_values new_wm = {}; - - vlv_merge_wm(dev_priv, &new_wm); - - if (memcmp(old_wm, &new_wm, sizeof(new_wm)) == 0) - return; - - if (is_disabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_DDR_DVFS)) - chv_set_memory_dvfs(dev_priv, false); - - if (is_disabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_PM5)) - chv_set_memory_pm5(dev_priv, false); - - if (is_disabling(old_wm->cxsr, new_wm.cxsr, true)) - _intel_set_memory_cxsr(dev_priv, false); - - vlv_write_wm_values(dev_priv, &new_wm); - - if (is_enabling(old_wm->cxsr, new_wm.cxsr, true)) - _intel_set_memory_cxsr(dev_priv, true); - - if (is_enabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_PM5)) - chv_set_memory_pm5(dev_priv, true); - - if (is_enabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_DDR_DVFS)) - chv_set_memory_dvfs(dev_priv, true); - - *old_wm = new_wm; -} - -static void vlv_initial_watermarks(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - const struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - - mutex_lock(&dev_priv->wm.wm_mutex); - crtc->wm.active.vlv = crtc_state->wm.vlv.intermediate; - vlv_program_watermarks(dev_priv); - mutex_unlock(&dev_priv->wm.wm_mutex); -} - -static void vlv_optimize_watermarks(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - const struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - - if (!crtc_state->wm.need_postvbl_update) - return; - - mutex_lock(&dev_priv->wm.wm_mutex); - crtc->wm.active.vlv = crtc_state->wm.vlv.optimal; - vlv_program_watermarks(dev_priv); - mutex_unlock(&dev_priv->wm.wm_mutex); -} - -static void i965_update_wm(struct intel_crtc *unused_crtc) -{ - struct drm_i915_private *dev_priv = to_i915(unused_crtc->base.dev); - struct intel_crtc *crtc; - int srwm = 1; - int cursor_sr = 16; - bool cxsr_enabled; - - /* Calc sr entries for one plane configs */ - crtc = single_enabled_crtc(dev_priv); - if (crtc) { - /* self-refresh has much higher latency */ - static const int sr_latency_ns = 12000; - const struct drm_display_mode *pipe_mode = - &crtc->config->hw.pipe_mode; - const struct drm_framebuffer *fb = - crtc->base.primary->state->fb; - int clock = pipe_mode->crtc_clock; - int htotal = pipe_mode->crtc_htotal; - int hdisplay = crtc->config->pipe_src_w; - int cpp = fb->format->cpp[0]; - int entries; - - entries = intel_wm_method2(clock, htotal, - hdisplay, cpp, sr_latency_ns / 100); - entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE); - srwm = I965_FIFO_SIZE - entries; - if (srwm < 0) - srwm = 1; - srwm &= 0x1ff; - drm_dbg_kms(&dev_priv->drm, - "self-refresh entries: %d, wm: %d\n", - entries, srwm); - - entries = intel_wm_method2(clock, htotal, - crtc->base.cursor->state->crtc_w, 4, - sr_latency_ns / 100); - entries = DIV_ROUND_UP(entries, - i965_cursor_wm_info.cacheline_size) + - i965_cursor_wm_info.guard_size; - - cursor_sr = i965_cursor_wm_info.fifo_size - entries; - if (cursor_sr > i965_cursor_wm_info.max_wm) - cursor_sr = i965_cursor_wm_info.max_wm; - - drm_dbg_kms(&dev_priv->drm, - "self-refresh watermark: display plane %d " - "cursor %d\n", srwm, cursor_sr); - - cxsr_enabled = true; - } else { - cxsr_enabled = false; - /* Turn off self refresh if both pipes are enabled */ - intel_set_memory_cxsr(dev_priv, false); - } - - drm_dbg_kms(&dev_priv->drm, - "Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n", - srwm); - - /* 965 has limitations... */ - intel_uncore_write(&dev_priv->uncore, DSPFW1, FW_WM(srwm, SR) | - FW_WM(8, CURSORB) | - FW_WM(8, PLANEB) | - FW_WM(8, PLANEA)); - intel_uncore_write(&dev_priv->uncore, DSPFW2, FW_WM(8, CURSORA) | - FW_WM(8, PLANEC_OLD)); - /* update cursor SR watermark */ - intel_uncore_write(&dev_priv->uncore, DSPFW3, FW_WM(cursor_sr, CURSOR_SR)); - - if (cxsr_enabled) - intel_set_memory_cxsr(dev_priv, true); -} - -#undef FW_WM - -static void i9xx_update_wm(struct intel_crtc *unused_crtc) -{ - struct drm_i915_private *dev_priv = to_i915(unused_crtc->base.dev); - const struct intel_watermark_params *wm_info; - u32 fwater_lo; - u32 fwater_hi; - int cwm, srwm = 1; - int fifo_size; - int planea_wm, planeb_wm; - struct intel_crtc *crtc, *enabled = NULL; - - if (IS_I945GM(dev_priv)) - wm_info = &i945_wm_info; - else if (DISPLAY_VER(dev_priv) != 2) - wm_info = &i915_wm_info; - else - wm_info = &i830_a_wm_info; - - fifo_size = dev_priv->display.get_fifo_size(dev_priv, PLANE_A); - crtc = intel_get_crtc_for_plane(dev_priv, PLANE_A); - if (intel_crtc_active(crtc)) { - const struct drm_display_mode *pipe_mode = - &crtc->config->hw.pipe_mode; - const struct drm_framebuffer *fb = - crtc->base.primary->state->fb; - int cpp; - - if (DISPLAY_VER(dev_priv) == 2) - cpp = 4; - else - cpp = fb->format->cpp[0]; - - planea_wm = intel_calculate_wm(pipe_mode->crtc_clock, - wm_info, fifo_size, cpp, - pessimal_latency_ns); - enabled = crtc; - } else { - planea_wm = fifo_size - wm_info->guard_size; - if (planea_wm > (long)wm_info->max_wm) - planea_wm = wm_info->max_wm; - } - - if (DISPLAY_VER(dev_priv) == 2) - wm_info = &i830_bc_wm_info; - - fifo_size = dev_priv->display.get_fifo_size(dev_priv, PLANE_B); - crtc = intel_get_crtc_for_plane(dev_priv, PLANE_B); - if (intel_crtc_active(crtc)) { - const struct drm_display_mode *pipe_mode = - &crtc->config->hw.pipe_mode; - const struct drm_framebuffer *fb = - crtc->base.primary->state->fb; - int cpp; - - if (DISPLAY_VER(dev_priv) == 2) - cpp = 4; - else - cpp = fb->format->cpp[0]; - - planeb_wm = intel_calculate_wm(pipe_mode->crtc_clock, - wm_info, fifo_size, cpp, - pessimal_latency_ns); - if (enabled == NULL) - enabled = crtc; - else - enabled = NULL; - } else { - planeb_wm = fifo_size - wm_info->guard_size; - if (planeb_wm > (long)wm_info->max_wm) - planeb_wm = wm_info->max_wm; - } - - drm_dbg_kms(&dev_priv->drm, - "FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); - - if (IS_I915GM(dev_priv) && enabled) { - struct drm_i915_gem_object *obj; - - obj = intel_fb_obj(enabled->base.primary->state->fb); - - /* self-refresh seems busted with untiled */ - if (!i915_gem_object_is_tiled(obj)) - enabled = NULL; - } - - /* - * Overlay gets an aggressive default since video jitter is bad. - */ - cwm = 2; - - /* Play safe and disable self-refresh before adjusting watermarks. */ - intel_set_memory_cxsr(dev_priv, false); - - /* Calc sr entries for one plane configs */ - if (HAS_FW_BLC(dev_priv) && enabled) { - /* self-refresh has much higher latency */ - static const int sr_latency_ns = 6000; - const struct drm_display_mode *pipe_mode = - &enabled->config->hw.pipe_mode; - const struct drm_framebuffer *fb = - enabled->base.primary->state->fb; - int clock = pipe_mode->crtc_clock; - int htotal = pipe_mode->crtc_htotal; - int hdisplay = enabled->config->pipe_src_w; - int cpp; - int entries; - - if (IS_I915GM(dev_priv) || IS_I945GM(dev_priv)) - cpp = 4; - else - cpp = fb->format->cpp[0]; - - entries = intel_wm_method2(clock, htotal, hdisplay, cpp, - sr_latency_ns / 100); - entries = DIV_ROUND_UP(entries, wm_info->cacheline_size); - drm_dbg_kms(&dev_priv->drm, - "self-refresh entries: %d\n", entries); - srwm = wm_info->fifo_size - entries; - if (srwm < 0) - srwm = 1; - - if (IS_I945G(dev_priv) || IS_I945GM(dev_priv)) - intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF, - FW_BLC_SELF_FIFO_MASK | (srwm & 0xff)); - else - intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF, srwm & 0x3f); - } - - drm_dbg_kms(&dev_priv->drm, - "Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n", - planea_wm, planeb_wm, cwm, srwm); - - fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f); - fwater_hi = (cwm & 0x1f); - - /* Set request length to 8 cachelines per fetch */ - fwater_lo = fwater_lo | (1 << 24) | (1 << 8); - fwater_hi = fwater_hi | (1 << 8); - - intel_uncore_write(&dev_priv->uncore, FW_BLC, fwater_lo); - intel_uncore_write(&dev_priv->uncore, FW_BLC2, fwater_hi); - - if (enabled) - intel_set_memory_cxsr(dev_priv, true); -} - -static void i845_update_wm(struct intel_crtc *unused_crtc) -{ - struct drm_i915_private *dev_priv = to_i915(unused_crtc->base.dev); - struct intel_crtc *crtc; - const struct drm_display_mode *pipe_mode; - u32 fwater_lo; - int planea_wm; - - crtc = single_enabled_crtc(dev_priv); - if (crtc == NULL) - return; - - pipe_mode = &crtc->config->hw.pipe_mode; - planea_wm = intel_calculate_wm(pipe_mode->crtc_clock, - &i845_wm_info, - dev_priv->display.get_fifo_size(dev_priv, PLANE_A), - 4, pessimal_latency_ns); - fwater_lo = intel_uncore_read(&dev_priv->uncore, FW_BLC) & ~0xfff; - fwater_lo |= (3<<8) | planea_wm; - - drm_dbg_kms(&dev_priv->drm, - "Setting FIFO watermarks - A: %d\n", planea_wm); - - intel_uncore_write(&dev_priv->uncore, FW_BLC, fwater_lo); -} - -/* latency must be in 0.1us units. */ -static unsigned int ilk_wm_method1(unsigned int pixel_rate, - unsigned int cpp, - unsigned int latency) -{ - unsigned int ret; - - ret = intel_wm_method1(pixel_rate, cpp, latency); - ret = DIV_ROUND_UP(ret, 64) + 2; - - return ret; -} - -/* latency must be in 0.1us units. */ -static unsigned int ilk_wm_method2(unsigned int pixel_rate, - unsigned int htotal, - unsigned int width, - unsigned int cpp, - unsigned int latency) -{ - unsigned int ret; - - ret = intel_wm_method2(pixel_rate, htotal, - width, cpp, latency); - ret = DIV_ROUND_UP(ret, 64) + 2; - - return ret; -} - -static u32 ilk_wm_fbc(u32 pri_val, u32 horiz_pixels, u8 cpp) -{ - /* - * Neither of these should be possible since this function shouldn't be - * called if the CRTC is off or the plane is invisible. But let's be - * extra paranoid to avoid a potential divide-by-zero if we screw up - * elsewhere in the driver. - */ - if (WARN_ON(!cpp)) - return 0; - if (WARN_ON(!horiz_pixels)) - return 0; - - return DIV_ROUND_UP(pri_val * 64, horiz_pixels * cpp) + 2; -} - -struct ilk_wm_maximums { - u16 pri; - u16 spr; - u16 cur; - u16 fbc; -}; - -/* - * For both WM_PIPE and WM_LP. - * mem_value must be in 0.1us units. - */ -static u32 ilk_compute_pri_wm(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - u32 mem_value, bool is_lp) -{ - u32 method1, method2; - int cpp; - - if (mem_value == 0) - return U32_MAX; - - if (!intel_wm_plane_visible(crtc_state, plane_state)) - return 0; - - cpp = plane_state->hw.fb->format->cpp[0]; - - method1 = ilk_wm_method1(crtc_state->pixel_rate, cpp, mem_value); - - if (!is_lp) - return method1; - - method2 = ilk_wm_method2(crtc_state->pixel_rate, - crtc_state->hw.pipe_mode.crtc_htotal, - drm_rect_width(&plane_state->uapi.dst), - cpp, mem_value); - - return min(method1, method2); -} - -/* - * For both WM_PIPE and WM_LP. - * mem_value must be in 0.1us units. - */ -static u32 ilk_compute_spr_wm(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - u32 mem_value) -{ - u32 method1, method2; - int cpp; - - if (mem_value == 0) - return U32_MAX; - - if (!intel_wm_plane_visible(crtc_state, plane_state)) - return 0; - - cpp = plane_state->hw.fb->format->cpp[0]; - - method1 = ilk_wm_method1(crtc_state->pixel_rate, cpp, mem_value); - method2 = ilk_wm_method2(crtc_state->pixel_rate, - crtc_state->hw.pipe_mode.crtc_htotal, - drm_rect_width(&plane_state->uapi.dst), - cpp, mem_value); - return min(method1, method2); -} - -/* - * For both WM_PIPE and WM_LP. - * mem_value must be in 0.1us units. - */ -static u32 ilk_compute_cur_wm(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - u32 mem_value) -{ - int cpp; - - if (mem_value == 0) - return U32_MAX; - - if (!intel_wm_plane_visible(crtc_state, plane_state)) - return 0; - - cpp = plane_state->hw.fb->format->cpp[0]; - - return ilk_wm_method2(crtc_state->pixel_rate, - crtc_state->hw.pipe_mode.crtc_htotal, - drm_rect_width(&plane_state->uapi.dst), - cpp, mem_value); -} - -/* Only for WM_LP. */ -static u32 ilk_compute_fbc_wm(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - u32 pri_val) -{ - int cpp; - - if (!intel_wm_plane_visible(crtc_state, plane_state)) - return 0; - - cpp = plane_state->hw.fb->format->cpp[0]; - - return ilk_wm_fbc(pri_val, drm_rect_width(&plane_state->uapi.dst), - cpp); -} - -static unsigned int -ilk_display_fifo_size(const struct drm_i915_private *dev_priv) -{ - if (DISPLAY_VER(dev_priv) >= 8) - return 3072; - else if (DISPLAY_VER(dev_priv) >= 7) - return 768; - else - return 512; -} - -static unsigned int -ilk_plane_wm_reg_max(const struct drm_i915_private *dev_priv, - int level, bool is_sprite) -{ - if (DISPLAY_VER(dev_priv) >= 8) - /* BDW primary/sprite plane watermarks */ - return level == 0 ? 255 : 2047; - else if (DISPLAY_VER(dev_priv) >= 7) - /* IVB/HSW primary/sprite plane watermarks */ - return level == 0 ? 127 : 1023; - else if (!is_sprite) - /* ILK/SNB primary plane watermarks */ - return level == 0 ? 127 : 511; - else - /* ILK/SNB sprite plane watermarks */ - return level == 0 ? 63 : 255; -} - -static unsigned int -ilk_cursor_wm_reg_max(const struct drm_i915_private *dev_priv, int level) -{ - if (DISPLAY_VER(dev_priv) >= 7) - return level == 0 ? 63 : 255; - else - return level == 0 ? 31 : 63; -} - -static unsigned int ilk_fbc_wm_reg_max(const struct drm_i915_private *dev_priv) -{ - if (DISPLAY_VER(dev_priv) >= 8) - return 31; - else - return 15; -} - -/* Calculate the maximum primary/sprite plane watermark */ -static unsigned int ilk_plane_wm_max(const struct drm_i915_private *dev_priv, - int level, - const struct intel_wm_config *config, - enum intel_ddb_partitioning ddb_partitioning, - bool is_sprite) -{ - unsigned int fifo_size = ilk_display_fifo_size(dev_priv); - - /* if sprites aren't enabled, sprites get nothing */ - if (is_sprite && !config->sprites_enabled) - return 0; - - /* HSW allows LP1+ watermarks even with multiple pipes */ - if (level == 0 || config->num_pipes_active > 1) { - fifo_size /= INTEL_NUM_PIPES(dev_priv); - - /* - * For some reason the non self refresh - * FIFO size is only half of the self - * refresh FIFO size on ILK/SNB. - */ - if (DISPLAY_VER(dev_priv) <= 6) - fifo_size /= 2; - } - - if (config->sprites_enabled) { - /* level 0 is always calculated with 1:1 split */ - if (level > 0 && ddb_partitioning == INTEL_DDB_PART_5_6) { - if (is_sprite) - fifo_size *= 5; - fifo_size /= 6; - } else { - fifo_size /= 2; - } - } - - /* clamp to max that the registers can hold */ - return min(fifo_size, ilk_plane_wm_reg_max(dev_priv, level, is_sprite)); -} - -/* Calculate the maximum cursor plane watermark */ -static unsigned int ilk_cursor_wm_max(const struct drm_i915_private *dev_priv, - int level, - const struct intel_wm_config *config) -{ - /* HSW LP1+ watermarks w/ multiple pipes */ - if (level > 0 && config->num_pipes_active > 1) - return 64; - - /* otherwise just report max that registers can hold */ - return ilk_cursor_wm_reg_max(dev_priv, level); -} - -static void ilk_compute_wm_maximums(const struct drm_i915_private *dev_priv, - int level, - const struct intel_wm_config *config, - enum intel_ddb_partitioning ddb_partitioning, - struct ilk_wm_maximums *max) -{ - max->pri = ilk_plane_wm_max(dev_priv, level, config, ddb_partitioning, false); - max->spr = ilk_plane_wm_max(dev_priv, level, config, ddb_partitioning, true); - max->cur = ilk_cursor_wm_max(dev_priv, level, config); - max->fbc = ilk_fbc_wm_reg_max(dev_priv); -} - -static void ilk_compute_wm_reg_maximums(const struct drm_i915_private *dev_priv, - int level, - struct ilk_wm_maximums *max) -{ - max->pri = ilk_plane_wm_reg_max(dev_priv, level, false); - max->spr = ilk_plane_wm_reg_max(dev_priv, level, true); - max->cur = ilk_cursor_wm_reg_max(dev_priv, level); - max->fbc = ilk_fbc_wm_reg_max(dev_priv); -} - -static bool ilk_validate_wm_level(int level, - const struct ilk_wm_maximums *max, - struct intel_wm_level *result) -{ - bool ret; - - /* already determined to be invalid? */ - if (!result->enable) - return false; - - result->enable = result->pri_val <= max->pri && - result->spr_val <= max->spr && - result->cur_val <= max->cur; - - ret = result->enable; - - /* - * HACK until we can pre-compute everything, - * and thus fail gracefully if LP0 watermarks - * are exceeded... - */ - if (level == 0 && !result->enable) { - if (result->pri_val > max->pri) - DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n", - level, result->pri_val, max->pri); - if (result->spr_val > max->spr) - DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n", - level, result->spr_val, max->spr); - if (result->cur_val > max->cur) - DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n", - level, result->cur_val, max->cur); - - result->pri_val = min_t(u32, result->pri_val, max->pri); - result->spr_val = min_t(u32, result->spr_val, max->spr); - result->cur_val = min_t(u32, result->cur_val, max->cur); - result->enable = true; - } - - return ret; -} - -static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv, - const struct intel_crtc *crtc, - int level, - struct intel_crtc_state *crtc_state, - const struct intel_plane_state *pristate, - const struct intel_plane_state *sprstate, - const struct intel_plane_state *curstate, - struct intel_wm_level *result) -{ - u16 pri_latency = dev_priv->wm.pri_latency[level]; - u16 spr_latency = dev_priv->wm.spr_latency[level]; - u16 cur_latency = dev_priv->wm.cur_latency[level]; - - /* WM1+ latency values stored in 0.5us units */ - if (level > 0) { - pri_latency *= 5; - spr_latency *= 5; - cur_latency *= 5; - } - - if (pristate) { - result->pri_val = ilk_compute_pri_wm(crtc_state, pristate, - pri_latency, level); - result->fbc_val = ilk_compute_fbc_wm(crtc_state, pristate, result->pri_val); - } - - if (sprstate) - result->spr_val = ilk_compute_spr_wm(crtc_state, sprstate, spr_latency); - - if (curstate) - result->cur_val = ilk_compute_cur_wm(crtc_state, curstate, cur_latency); - - result->enable = true; -} - -static void intel_read_wm_latency(struct drm_i915_private *dev_priv, - u16 wm[8]) -{ - struct intel_uncore *uncore = &dev_priv->uncore; - - if (DISPLAY_VER(dev_priv) >= 9) { - u32 val; - int ret, i; - int level, max_level = ilk_wm_max_level(dev_priv); - - /* read the first set of memory latencies[0:3] */ - val = 0; /* data0 to be programmed to 0 for first set */ - ret = sandybridge_pcode_read(dev_priv, - GEN9_PCODE_READ_MEM_LATENCY, - &val, NULL); - - if (ret) { - drm_err(&dev_priv->drm, - "SKL Mailbox read error = %d\n", ret); - return; - } - - wm[0] = val & GEN9_MEM_LATENCY_LEVEL_MASK; - wm[1] = (val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) & - GEN9_MEM_LATENCY_LEVEL_MASK; - wm[2] = (val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) & - GEN9_MEM_LATENCY_LEVEL_MASK; - wm[3] = (val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) & - GEN9_MEM_LATENCY_LEVEL_MASK; - - /* read the second set of memory latencies[4:7] */ - val = 1; /* data0 to be programmed to 1 for second set */ - ret = sandybridge_pcode_read(dev_priv, - GEN9_PCODE_READ_MEM_LATENCY, - &val, NULL); - if (ret) { - drm_err(&dev_priv->drm, - "SKL Mailbox read error = %d\n", ret); - return; - } - - wm[4] = val & GEN9_MEM_LATENCY_LEVEL_MASK; - wm[5] = (val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) & - GEN9_MEM_LATENCY_LEVEL_MASK; - wm[6] = (val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) & - GEN9_MEM_LATENCY_LEVEL_MASK; - wm[7] = (val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) & - GEN9_MEM_LATENCY_LEVEL_MASK; - - /* - * If a level n (n > 1) has a 0us latency, all levels m (m >= n) - * need to be disabled. We make sure to sanitize the values out - * of the punit to satisfy this requirement. - */ - for (level = 1; level <= max_level; level++) { - if (wm[level] == 0) { - for (i = level + 1; i <= max_level; i++) - wm[i] = 0; - break; - } - } - - /* - * WaWmMemoryReadLatency:skl+,glk - * - * punit doesn't take into account the read latency so we need - * to add 2us to the various latency levels we retrieve from the - * punit when level 0 response data us 0us. - */ - if (wm[0] == 0) { - wm[0] += 2; - for (level = 1; level <= max_level; level++) { - if (wm[level] == 0) - break; - wm[level] += 2; - } - } - - /* - * WA Level-0 adjustment for 16GB DIMMs: SKL+ - * If we could not get dimm info enable this WA to prevent from - * any underrun. If not able to get Dimm info assume 16GB dimm - * to avoid any underrun. - */ - if (dev_priv->dram_info.wm_lv_0_adjust_needed) - wm[0] += 1; - - } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) { - u64 sskpd = intel_uncore_read64(uncore, MCH_SSKPD); - - wm[0] = (sskpd >> 56) & 0xFF; - if (wm[0] == 0) - wm[0] = sskpd & 0xF; - wm[1] = (sskpd >> 4) & 0xFF; - wm[2] = (sskpd >> 12) & 0xFF; - wm[3] = (sskpd >> 20) & 0x1FF; - wm[4] = (sskpd >> 32) & 0x1FF; - } else if (DISPLAY_VER(dev_priv) >= 6) { - u32 sskpd = intel_uncore_read(uncore, MCH_SSKPD); - - wm[0] = (sskpd >> SSKPD_WM0_SHIFT) & SSKPD_WM_MASK; - wm[1] = (sskpd >> SSKPD_WM1_SHIFT) & SSKPD_WM_MASK; - wm[2] = (sskpd >> SSKPD_WM2_SHIFT) & SSKPD_WM_MASK; - wm[3] = (sskpd >> SSKPD_WM3_SHIFT) & SSKPD_WM_MASK; - } else if (DISPLAY_VER(dev_priv) >= 5) { - u32 mltr = intel_uncore_read(uncore, MLTR_ILK); - - /* ILK primary LP0 latency is 700 ns */ - wm[0] = 7; - wm[1] = (mltr >> MLTR_WM1_SHIFT) & ILK_SRLT_MASK; - wm[2] = (mltr >> MLTR_WM2_SHIFT) & ILK_SRLT_MASK; - } else { - MISSING_CASE(INTEL_DEVID(dev_priv)); - } -} - -static void intel_fixup_spr_wm_latency(struct drm_i915_private *dev_priv, - u16 wm[5]) -{ - /* ILK sprite LP0 latency is 1300 ns */ - if (DISPLAY_VER(dev_priv) == 5) - wm[0] = 13; -} - -static void intel_fixup_cur_wm_latency(struct drm_i915_private *dev_priv, - u16 wm[5]) -{ - /* ILK cursor LP0 latency is 1300 ns */ - if (DISPLAY_VER(dev_priv) == 5) - wm[0] = 13; -} - -int ilk_wm_max_level(const struct drm_i915_private *dev_priv) -{ - /* how many WM levels are we expecting */ - if (HAS_HW_SAGV_WM(dev_priv)) - return 5; - else if (DISPLAY_VER(dev_priv) >= 9) - return 7; - else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) - return 4; - else if (DISPLAY_VER(dev_priv) >= 6) - return 3; - else - return 2; -} - -static void intel_print_wm_latency(struct drm_i915_private *dev_priv, - const char *name, - const u16 wm[]) -{ - int level, max_level = ilk_wm_max_level(dev_priv); - - for (level = 0; level <= max_level; level++) { - unsigned int latency = wm[level]; - - if (latency == 0) { - drm_dbg_kms(&dev_priv->drm, - "%s WM%d latency not provided\n", - name, level); - continue; - } - - /* - * - latencies are in us on gen9. - * - before then, WM1+ latency values are in 0.5us units - */ - if (DISPLAY_VER(dev_priv) >= 9) - latency *= 10; - else if (level > 0) - latency *= 5; - - drm_dbg_kms(&dev_priv->drm, - "%s WM%d latency %u (%u.%u usec)\n", name, level, - wm[level], latency / 10, latency % 10); - } -} - -static bool ilk_increase_wm_latency(struct drm_i915_private *dev_priv, - u16 wm[5], u16 min) -{ - int level, max_level = ilk_wm_max_level(dev_priv); - - if (wm[0] >= min) - return false; - - wm[0] = max(wm[0], min); - for (level = 1; level <= max_level; level++) - wm[level] = max_t(u16, wm[level], DIV_ROUND_UP(min, 5)); - - return true; -} - -static void snb_wm_latency_quirk(struct drm_i915_private *dev_priv) -{ - bool changed; - - /* - * The BIOS provided WM memory latency values are often - * inadequate for high resolution displays. Adjust them. - */ - changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12) | - ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12) | - ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12); - - if (!changed) - return; - - drm_dbg_kms(&dev_priv->drm, - "WM latency values increased to avoid potential underruns\n"); - intel_print_wm_latency(dev_priv, "Primary", dev_priv->wm.pri_latency); - intel_print_wm_latency(dev_priv, "Sprite", dev_priv->wm.spr_latency); - intel_print_wm_latency(dev_priv, "Cursor", dev_priv->wm.cur_latency); -} - -static void snb_wm_lp3_irq_quirk(struct drm_i915_private *dev_priv) -{ - /* - * On some SNB machines (Thinkpad X220 Tablet at least) - * LP3 usage can cause vblank interrupts to be lost. - * The DEIIR bit will go high but it looks like the CPU - * never gets interrupted. - * - * It's not clear whether other interrupt source could - * be affected or if this is somehow limited to vblank - * interrupts only. To play it safe we disable LP3 - * watermarks entirely. - */ - if (dev_priv->wm.pri_latency[3] == 0 && - dev_priv->wm.spr_latency[3] == 0 && - dev_priv->wm.cur_latency[3] == 0) - return; - - dev_priv->wm.pri_latency[3] = 0; - dev_priv->wm.spr_latency[3] = 0; - dev_priv->wm.cur_latency[3] = 0; - - drm_dbg_kms(&dev_priv->drm, - "LP3 watermarks disabled due to potential for lost interrupts\n"); - intel_print_wm_latency(dev_priv, "Primary", dev_priv->wm.pri_latency); - intel_print_wm_latency(dev_priv, "Sprite", dev_priv->wm.spr_latency); - intel_print_wm_latency(dev_priv, "Cursor", dev_priv->wm.cur_latency); -} - -static void ilk_setup_wm_latency(struct drm_i915_private *dev_priv) -{ - intel_read_wm_latency(dev_priv, dev_priv->wm.pri_latency); - - memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency, - sizeof(dev_priv->wm.pri_latency)); - memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency, - sizeof(dev_priv->wm.pri_latency)); - - intel_fixup_spr_wm_latency(dev_priv, dev_priv->wm.spr_latency); - intel_fixup_cur_wm_latency(dev_priv, dev_priv->wm.cur_latency); - - intel_print_wm_latency(dev_priv, "Primary", dev_priv->wm.pri_latency); - intel_print_wm_latency(dev_priv, "Sprite", dev_priv->wm.spr_latency); - intel_print_wm_latency(dev_priv, "Cursor", dev_priv->wm.cur_latency); - - if (DISPLAY_VER(dev_priv) == 6) { - snb_wm_latency_quirk(dev_priv); - snb_wm_lp3_irq_quirk(dev_priv); - } -} - -static void skl_setup_wm_latency(struct drm_i915_private *dev_priv) -{ - intel_read_wm_latency(dev_priv, dev_priv->wm.skl_latency); - intel_print_wm_latency(dev_priv, "Gen9 Plane", dev_priv->wm.skl_latency); -} - -static bool ilk_validate_pipe_wm(const struct drm_i915_private *dev_priv, - struct intel_pipe_wm *pipe_wm) -{ - /* LP0 watermark maximums depend on this pipe alone */ - const struct intel_wm_config config = { - .num_pipes_active = 1, - .sprites_enabled = pipe_wm->sprites_enabled, - .sprites_scaled = pipe_wm->sprites_scaled, - }; - struct ilk_wm_maximums max; - - /* LP0 watermarks always use 1/2 DDB partitioning */ - ilk_compute_wm_maximums(dev_priv, 0, &config, INTEL_DDB_PART_1_2, &max); - - /* At least LP0 must be valid */ - if (!ilk_validate_wm_level(0, &max, &pipe_wm->wm[0])) { - drm_dbg_kms(&dev_priv->drm, "LP0 watermark invalid\n"); - return false; - } - - return true; -} - -/* Compute new watermarks for the pipe */ -static int ilk_compute_pipe_wm(struct intel_crtc_state *crtc_state) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct intel_pipe_wm *pipe_wm; - struct intel_plane *plane; - const struct intel_plane_state *plane_state; - const struct intel_plane_state *pristate = NULL; - const struct intel_plane_state *sprstate = NULL; - const struct intel_plane_state *curstate = NULL; - int level, max_level = ilk_wm_max_level(dev_priv), usable_level; - struct ilk_wm_maximums max; - - pipe_wm = &crtc_state->wm.ilk.optimal; - - intel_atomic_crtc_state_for_each_plane_state(plane, plane_state, crtc_state) { - if (plane->base.type == DRM_PLANE_TYPE_PRIMARY) - pristate = plane_state; - else if (plane->base.type == DRM_PLANE_TYPE_OVERLAY) - sprstate = plane_state; - else if (plane->base.type == DRM_PLANE_TYPE_CURSOR) - curstate = plane_state; - } - - pipe_wm->pipe_enabled = crtc_state->hw.active; - if (sprstate) { - pipe_wm->sprites_enabled = sprstate->uapi.visible; - pipe_wm->sprites_scaled = sprstate->uapi.visible && - (drm_rect_width(&sprstate->uapi.dst) != drm_rect_width(&sprstate->uapi.src) >> 16 || - drm_rect_height(&sprstate->uapi.dst) != drm_rect_height(&sprstate->uapi.src) >> 16); - } - - usable_level = max_level; - - /* ILK/SNB: LP2+ watermarks only w/o sprites */ - if (DISPLAY_VER(dev_priv) <= 6 && pipe_wm->sprites_enabled) - usable_level = 1; - - /* ILK/SNB/IVB: LP1+ watermarks only w/o scaling */ - if (pipe_wm->sprites_scaled) - usable_level = 0; - - memset(&pipe_wm->wm, 0, sizeof(pipe_wm->wm)); - ilk_compute_wm_level(dev_priv, crtc, 0, crtc_state, - pristate, sprstate, curstate, &pipe_wm->wm[0]); - - if (!ilk_validate_pipe_wm(dev_priv, pipe_wm)) - return -EINVAL; - - ilk_compute_wm_reg_maximums(dev_priv, 1, &max); - - for (level = 1; level <= usable_level; level++) { - struct intel_wm_level *wm = &pipe_wm->wm[level]; - - ilk_compute_wm_level(dev_priv, crtc, level, crtc_state, - pristate, sprstate, curstate, wm); - - /* - * Disable any watermark level that exceeds the - * register maximums since such watermarks are - * always invalid. - */ - if (!ilk_validate_wm_level(level, &max, wm)) { - memset(wm, 0, sizeof(*wm)); - break; - } - } - - return 0; -} - -/* - * Build a set of 'intermediate' watermark values that satisfy both the old - * state and the new state. These can be programmed to the hardware - * immediately. - */ -static int ilk_compute_intermediate_wm(struct intel_crtc_state *newstate) -{ - struct intel_crtc *intel_crtc = to_intel_crtc(newstate->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev); - struct intel_pipe_wm *a = &newstate->wm.ilk.intermediate; - struct intel_atomic_state *intel_state = - to_intel_atomic_state(newstate->uapi.state); - const struct intel_crtc_state *oldstate = - intel_atomic_get_old_crtc_state(intel_state, intel_crtc); - const struct intel_pipe_wm *b = &oldstate->wm.ilk.optimal; - int level, max_level = ilk_wm_max_level(dev_priv); - - /* - * Start with the final, target watermarks, then combine with the - * currently active watermarks to get values that are safe both before - * and after the vblank. - */ - *a = newstate->wm.ilk.optimal; - if (!newstate->hw.active || drm_atomic_crtc_needs_modeset(&newstate->uapi) || - intel_state->skip_intermediate_wm) - return 0; - - a->pipe_enabled |= b->pipe_enabled; - a->sprites_enabled |= b->sprites_enabled; - a->sprites_scaled |= b->sprites_scaled; - - for (level = 0; level <= max_level; level++) { - struct intel_wm_level *a_wm = &a->wm[level]; - const struct intel_wm_level *b_wm = &b->wm[level]; - - a_wm->enable &= b_wm->enable; - a_wm->pri_val = max(a_wm->pri_val, b_wm->pri_val); - a_wm->spr_val = max(a_wm->spr_val, b_wm->spr_val); - a_wm->cur_val = max(a_wm->cur_val, b_wm->cur_val); - a_wm->fbc_val = max(a_wm->fbc_val, b_wm->fbc_val); - } - - /* - * We need to make sure that these merged watermark values are - * actually a valid configuration themselves. If they're not, - * there's no safe way to transition from the old state to - * the new state, so we need to fail the atomic transaction. - */ - if (!ilk_validate_pipe_wm(dev_priv, a)) - return -EINVAL; - - /* - * If our intermediate WM are identical to the final WM, then we can - * omit the post-vblank programming; only update if it's different. - */ - if (memcmp(a, &newstate->wm.ilk.optimal, sizeof(*a)) != 0) - newstate->wm.need_postvbl_update = true; - - return 0; -} - -/* - * Merge the watermarks from all active pipes for a specific level. - */ -static void ilk_merge_wm_level(struct drm_i915_private *dev_priv, - int level, - struct intel_wm_level *ret_wm) -{ - const struct intel_crtc *intel_crtc; - - ret_wm->enable = true; - - for_each_intel_crtc(&dev_priv->drm, intel_crtc) { - const struct intel_pipe_wm *active = &intel_crtc->wm.active.ilk; - const struct intel_wm_level *wm = &active->wm[level]; - - if (!active->pipe_enabled) - continue; - - /* - * The watermark values may have been used in the past, - * so we must maintain them in the registers for some - * time even if the level is now disabled. - */ - if (!wm->enable) - ret_wm->enable = false; - - ret_wm->pri_val = max(ret_wm->pri_val, wm->pri_val); - ret_wm->spr_val = max(ret_wm->spr_val, wm->spr_val); - ret_wm->cur_val = max(ret_wm->cur_val, wm->cur_val); - ret_wm->fbc_val = max(ret_wm->fbc_val, wm->fbc_val); - } -} - -/* - * Merge all low power watermarks for all active pipes. - */ -static void ilk_wm_merge(struct drm_i915_private *dev_priv, - const struct intel_wm_config *config, - const struct ilk_wm_maximums *max, - struct intel_pipe_wm *merged) -{ - int level, max_level = ilk_wm_max_level(dev_priv); - int last_enabled_level = max_level; - - /* ILK/SNB/IVB: LP1+ watermarks only w/ single pipe */ - if ((DISPLAY_VER(dev_priv) <= 6 || IS_IVYBRIDGE(dev_priv)) && - config->num_pipes_active > 1) - last_enabled_level = 0; - - /* ILK: FBC WM must be disabled always */ - merged->fbc_wm_enabled = DISPLAY_VER(dev_priv) >= 6; - - /* merge each WM1+ level */ - for (level = 1; level <= max_level; level++) { - struct intel_wm_level *wm = &merged->wm[level]; - - ilk_merge_wm_level(dev_priv, level, wm); - - if (level > last_enabled_level) - wm->enable = false; - else if (!ilk_validate_wm_level(level, max, wm)) - /* make sure all following levels get disabled */ - last_enabled_level = level - 1; - - /* - * The spec says it is preferred to disable - * FBC WMs instead of disabling a WM level. - */ - if (wm->fbc_val > max->fbc) { - if (wm->enable) - merged->fbc_wm_enabled = false; - wm->fbc_val = 0; - } - } - - /* ILK: LP2+ must be disabled when FBC WM is disabled but FBC enabled */ - /* - * FIXME this is racy. FBC might get enabled later. - * What we should check here is whether FBC can be - * enabled sometime later. - */ - if (DISPLAY_VER(dev_priv) == 5 && !merged->fbc_wm_enabled && - intel_fbc_is_active(dev_priv)) { - for (level = 2; level <= max_level; level++) { - struct intel_wm_level *wm = &merged->wm[level]; - - wm->enable = false; - } - } -} - -static int ilk_wm_lp_to_level(int wm_lp, const struct intel_pipe_wm *pipe_wm) -{ - /* LP1,LP2,LP3 levels are either 1,2,3 or 1,3,4 */ - return wm_lp + (wm_lp >= 2 && pipe_wm->wm[4].enable); -} - -/* The value we need to program into the WM_LPx latency field */ -static unsigned int ilk_wm_lp_latency(struct drm_i915_private *dev_priv, - int level) -{ - if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) - return 2 * level; - else - return dev_priv->wm.pri_latency[level]; -} - -static void ilk_compute_wm_results(struct drm_i915_private *dev_priv, - const struct intel_pipe_wm *merged, - enum intel_ddb_partitioning partitioning, - struct ilk_wm_values *results) -{ - struct intel_crtc *intel_crtc; - int level, wm_lp; - - results->enable_fbc_wm = merged->fbc_wm_enabled; - results->partitioning = partitioning; - - /* LP1+ register values */ - for (wm_lp = 1; wm_lp <= 3; wm_lp++) { - const struct intel_wm_level *r; - - level = ilk_wm_lp_to_level(wm_lp, merged); - - r = &merged->wm[level]; - - /* - * Maintain the watermark values even if the level is - * disabled. Doing otherwise could cause underruns. - */ - results->wm_lp[wm_lp - 1] = - (ilk_wm_lp_latency(dev_priv, level) << WM1_LP_LATENCY_SHIFT) | - (r->pri_val << WM1_LP_SR_SHIFT) | - r->cur_val; - - if (r->enable) - results->wm_lp[wm_lp - 1] |= WM1_LP_SR_EN; - - if (DISPLAY_VER(dev_priv) >= 8) - results->wm_lp[wm_lp - 1] |= - r->fbc_val << WM1_LP_FBC_SHIFT_BDW; - else - results->wm_lp[wm_lp - 1] |= - r->fbc_val << WM1_LP_FBC_SHIFT; - - /* - * Always set WM1S_LP_EN when spr_val != 0, even if the - * level is disabled. Doing otherwise could cause underruns. - */ - if (DISPLAY_VER(dev_priv) <= 6 && r->spr_val) { - drm_WARN_ON(&dev_priv->drm, wm_lp != 1); - results->wm_lp_spr[wm_lp - 1] = WM1S_LP_EN | r->spr_val; - } else - results->wm_lp_spr[wm_lp - 1] = r->spr_val; - } - - /* LP0 register values */ - for_each_intel_crtc(&dev_priv->drm, intel_crtc) { - enum pipe pipe = intel_crtc->pipe; - const struct intel_pipe_wm *pipe_wm = &intel_crtc->wm.active.ilk; - const struct intel_wm_level *r = &pipe_wm->wm[0]; - - if (drm_WARN_ON(&dev_priv->drm, !r->enable)) - continue; - - results->wm_pipe[pipe] = - (r->pri_val << WM0_PIPE_PLANE_SHIFT) | - (r->spr_val << WM0_PIPE_SPRITE_SHIFT) | - r->cur_val; - } -} - -/* Find the result with the highest level enabled. Check for enable_fbc_wm in - * case both are at the same level. Prefer r1 in case they're the same. */ -static struct intel_pipe_wm * -ilk_find_best_result(struct drm_i915_private *dev_priv, - struct intel_pipe_wm *r1, - struct intel_pipe_wm *r2) -{ - int level, max_level = ilk_wm_max_level(dev_priv); - int level1 = 0, level2 = 0; - - for (level = 1; level <= max_level; level++) { - if (r1->wm[level].enable) - level1 = level; - if (r2->wm[level].enable) - level2 = level; - } - - if (level1 == level2) { - if (r2->fbc_wm_enabled && !r1->fbc_wm_enabled) - return r2; - else - return r1; - } else if (level1 > level2) { - return r1; - } else { - return r2; - } -} - -/* dirty bits used to track which watermarks need changes */ -#define WM_DIRTY_PIPE(pipe) (1 << (pipe)) -#define WM_DIRTY_LP(wm_lp) (1 << (15 + (wm_lp))) -#define WM_DIRTY_LP_ALL (WM_DIRTY_LP(1) | WM_DIRTY_LP(2) | WM_DIRTY_LP(3)) -#define WM_DIRTY_FBC (1 << 24) -#define WM_DIRTY_DDB (1 << 25) - -static unsigned int ilk_compute_wm_dirty(struct drm_i915_private *dev_priv, - const struct ilk_wm_values *old, - const struct ilk_wm_values *new) -{ - unsigned int dirty = 0; - enum pipe pipe; - int wm_lp; - - for_each_pipe(dev_priv, pipe) { - if (old->wm_pipe[pipe] != new->wm_pipe[pipe]) { - dirty |= WM_DIRTY_PIPE(pipe); - /* Must disable LP1+ watermarks too */ - dirty |= WM_DIRTY_LP_ALL; - } - } - - if (old->enable_fbc_wm != new->enable_fbc_wm) { - dirty |= WM_DIRTY_FBC; - /* Must disable LP1+ watermarks too */ - dirty |= WM_DIRTY_LP_ALL; - } - - if (old->partitioning != new->partitioning) { - dirty |= WM_DIRTY_DDB; - /* Must disable LP1+ watermarks too */ - dirty |= WM_DIRTY_LP_ALL; - } - - /* LP1+ watermarks already deemed dirty, no need to continue */ - if (dirty & WM_DIRTY_LP_ALL) - return dirty; - - /* Find the lowest numbered LP1+ watermark in need of an update... */ - for (wm_lp = 1; wm_lp <= 3; wm_lp++) { - if (old->wm_lp[wm_lp - 1] != new->wm_lp[wm_lp - 1] || - old->wm_lp_spr[wm_lp - 1] != new->wm_lp_spr[wm_lp - 1]) - break; - } - - /* ...and mark it and all higher numbered LP1+ watermarks as dirty */ - for (; wm_lp <= 3; wm_lp++) - dirty |= WM_DIRTY_LP(wm_lp); - - return dirty; -} - -static bool _ilk_disable_lp_wm(struct drm_i915_private *dev_priv, - unsigned int dirty) -{ - struct ilk_wm_values *previous = &dev_priv->wm.hw; - bool changed = false; - - if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] & WM1_LP_SR_EN) { - previous->wm_lp[2] &= ~WM1_LP_SR_EN; - intel_uncore_write(&dev_priv->uncore, WM3_LP_ILK, previous->wm_lp[2]); - changed = true; - } - if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] & WM1_LP_SR_EN) { - previous->wm_lp[1] &= ~WM1_LP_SR_EN; - intel_uncore_write(&dev_priv->uncore, WM2_LP_ILK, previous->wm_lp[1]); - changed = true; - } - if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] & WM1_LP_SR_EN) { - previous->wm_lp[0] &= ~WM1_LP_SR_EN; - intel_uncore_write(&dev_priv->uncore, WM1_LP_ILK, previous->wm_lp[0]); - changed = true; - } - - /* - * Don't touch WM1S_LP_EN here. - * Doing so could cause underruns. - */ - - return changed; -} - -/* - * The spec says we shouldn't write when we don't need, because every write - * causes WMs to be re-evaluated, expending some power. - */ -static void ilk_write_wm_values(struct drm_i915_private *dev_priv, - struct ilk_wm_values *results) -{ - struct ilk_wm_values *previous = &dev_priv->wm.hw; - unsigned int dirty; - u32 val; - - dirty = ilk_compute_wm_dirty(dev_priv, previous, results); - if (!dirty) - return; - - _ilk_disable_lp_wm(dev_priv, dirty); - - if (dirty & WM_DIRTY_PIPE(PIPE_A)) - intel_uncore_write(&dev_priv->uncore, WM0_PIPE_ILK(PIPE_A), results->wm_pipe[0]); - if (dirty & WM_DIRTY_PIPE(PIPE_B)) - intel_uncore_write(&dev_priv->uncore, WM0_PIPE_ILK(PIPE_B), results->wm_pipe[1]); - if (dirty & WM_DIRTY_PIPE(PIPE_C)) - intel_uncore_write(&dev_priv->uncore, WM0_PIPE_ILK(PIPE_C), results->wm_pipe[2]); - - if (dirty & WM_DIRTY_DDB) { - if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) { - val = intel_uncore_read(&dev_priv->uncore, WM_MISC); - if (results->partitioning == INTEL_DDB_PART_1_2) - val &= ~WM_MISC_DATA_PARTITION_5_6; - else - val |= WM_MISC_DATA_PARTITION_5_6; - intel_uncore_write(&dev_priv->uncore, WM_MISC, val); - } else { - val = intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL2); - if (results->partitioning == INTEL_DDB_PART_1_2) - val &= ~DISP_DATA_PARTITION_5_6; - else - val |= DISP_DATA_PARTITION_5_6; - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL2, val); - } - } - - if (dirty & WM_DIRTY_FBC) { - val = intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL); - if (results->enable_fbc_wm) - val &= ~DISP_FBC_WM_DIS; - else - val |= DISP_FBC_WM_DIS; - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, val); - } - - if (dirty & WM_DIRTY_LP(1) && - previous->wm_lp_spr[0] != results->wm_lp_spr[0]) - intel_uncore_write(&dev_priv->uncore, WM1S_LP_ILK, results->wm_lp_spr[0]); - - if (DISPLAY_VER(dev_priv) >= 7) { - if (dirty & WM_DIRTY_LP(2) && previous->wm_lp_spr[1] != results->wm_lp_spr[1]) - intel_uncore_write(&dev_priv->uncore, WM2S_LP_IVB, results->wm_lp_spr[1]); - if (dirty & WM_DIRTY_LP(3) && previous->wm_lp_spr[2] != results->wm_lp_spr[2]) - intel_uncore_write(&dev_priv->uncore, WM3S_LP_IVB, results->wm_lp_spr[2]); - } - - if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] != results->wm_lp[0]) - intel_uncore_write(&dev_priv->uncore, WM1_LP_ILK, results->wm_lp[0]); - if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] != results->wm_lp[1]) - intel_uncore_write(&dev_priv->uncore, WM2_LP_ILK, results->wm_lp[1]); - if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] != results->wm_lp[2]) - intel_uncore_write(&dev_priv->uncore, WM3_LP_ILK, results->wm_lp[2]); - - dev_priv->wm.hw = *results; -} - -bool ilk_disable_lp_wm(struct drm_i915_private *dev_priv) -{ - return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL); -} - -u8 intel_enabled_dbuf_slices_mask(struct drm_i915_private *dev_priv) -{ - u8 enabled_slices = 0; - enum dbuf_slice slice; - - for_each_dbuf_slice(dev_priv, slice) { - if (intel_uncore_read(&dev_priv->uncore, - DBUF_CTL_S(slice)) & DBUF_POWER_STATE) - enabled_slices |= BIT(slice); - } - - return enabled_slices; -} - -/* - * FIXME: We still don't have the proper code detect if we need to apply the WA, - * so assume we'll always need it in order to avoid underruns. - */ -static bool skl_needs_memory_bw_wa(struct drm_i915_private *dev_priv) -{ - return DISPLAY_VER(dev_priv) == 9; -} - -static bool -intel_has_sagv(struct drm_i915_private *dev_priv) -{ - return DISPLAY_VER(dev_priv) >= 9 && !IS_LP(dev_priv) && - dev_priv->sagv_status != I915_SAGV_NOT_CONTROLLED; -} - -static void -skl_setup_sagv_block_time(struct drm_i915_private *dev_priv) -{ - if (DISPLAY_VER(dev_priv) >= 12) { - u32 val = 0; - int ret; - - ret = sandybridge_pcode_read(dev_priv, - GEN12_PCODE_READ_SAGV_BLOCK_TIME_US, - &val, NULL); - if (!ret) { - dev_priv->sagv_block_time_us = val; - return; - } - - drm_dbg(&dev_priv->drm, "Couldn't read SAGV block time!\n"); - } else if (DISPLAY_VER(dev_priv) == 11) { - dev_priv->sagv_block_time_us = 10; - return; - } else if (DISPLAY_VER(dev_priv) == 10) { - dev_priv->sagv_block_time_us = 20; - return; - } else if (DISPLAY_VER(dev_priv) == 9) { - dev_priv->sagv_block_time_us = 30; - return; - } else { - MISSING_CASE(DISPLAY_VER(dev_priv)); - } - - /* Default to an unusable block time */ - dev_priv->sagv_block_time_us = -1; -} - -/* - * SAGV dynamically adjusts the system agent voltage and clock frequencies - * depending on power and performance requirements. The display engine access - * to system memory is blocked during the adjustment time. Because of the - * blocking time, having this enabled can cause full system hangs and/or pipe - * underruns if we don't meet all of the following requirements: - * - * - <= 1 pipe enabled - * - All planes can enable watermarks for latencies >= SAGV engine block time - * - We're not using an interlaced display configuration - */ -static int -intel_enable_sagv(struct drm_i915_private *dev_priv) -{ - int ret; - - if (!intel_has_sagv(dev_priv)) - return 0; - - if (dev_priv->sagv_status == I915_SAGV_ENABLED) - return 0; - - drm_dbg_kms(&dev_priv->drm, "Enabling SAGV\n"); - ret = sandybridge_pcode_write(dev_priv, GEN9_PCODE_SAGV_CONTROL, - GEN9_SAGV_ENABLE); - - /* We don't need to wait for SAGV when enabling */ - - /* - * Some skl systems, pre-release machines in particular, - * don't actually have SAGV. - */ - if (IS_SKYLAKE(dev_priv) && ret == -ENXIO) { - drm_dbg(&dev_priv->drm, "No SAGV found on system, ignoring\n"); - dev_priv->sagv_status = I915_SAGV_NOT_CONTROLLED; - return 0; - } else if (ret < 0) { - drm_err(&dev_priv->drm, "Failed to enable SAGV\n"); - return ret; - } - - dev_priv->sagv_status = I915_SAGV_ENABLED; - return 0; -} - -static int -intel_disable_sagv(struct drm_i915_private *dev_priv) -{ - int ret; - - if (!intel_has_sagv(dev_priv)) - return 0; - - if (dev_priv->sagv_status == I915_SAGV_DISABLED) - return 0; - - drm_dbg_kms(&dev_priv->drm, "Disabling SAGV\n"); - /* bspec says to keep retrying for at least 1 ms */ - ret = skl_pcode_request(dev_priv, GEN9_PCODE_SAGV_CONTROL, - GEN9_SAGV_DISABLE, - GEN9_SAGV_IS_DISABLED, GEN9_SAGV_IS_DISABLED, - 1); - /* - * Some skl systems, pre-release machines in particular, - * don't actually have SAGV. - */ - if (IS_SKYLAKE(dev_priv) && ret == -ENXIO) { - drm_dbg(&dev_priv->drm, "No SAGV found on system, ignoring\n"); - dev_priv->sagv_status = I915_SAGV_NOT_CONTROLLED; - return 0; - } else if (ret < 0) { - drm_err(&dev_priv->drm, "Failed to disable SAGV (%d)\n", ret); - return ret; - } - - dev_priv->sagv_status = I915_SAGV_DISABLED; - return 0; -} - -void intel_sagv_pre_plane_update(struct intel_atomic_state *state) -{ - struct drm_i915_private *dev_priv = to_i915(state->base.dev); - const struct intel_bw_state *new_bw_state; - const struct intel_bw_state *old_bw_state; - u32 new_mask = 0; - - /* - * Just return if we can't control SAGV or don't have it. - * This is different from situation when we have SAGV but just can't - * afford it due to DBuf limitation - in case if SAGV is completely - * disabled in a BIOS, we are not even allowed to send a PCode request, - * as it will throw an error. So have to check it here. - */ - if (!intel_has_sagv(dev_priv)) - return; - - new_bw_state = intel_atomic_get_new_bw_state(state); - if (!new_bw_state) - return; - - if (DISPLAY_VER(dev_priv) < 11 && !intel_can_enable_sagv(dev_priv, new_bw_state)) { - intel_disable_sagv(dev_priv); - return; - } - - old_bw_state = intel_atomic_get_old_bw_state(state); - /* - * Nothing to mask - */ - if (new_bw_state->qgv_points_mask == old_bw_state->qgv_points_mask) - return; - - new_mask = old_bw_state->qgv_points_mask | new_bw_state->qgv_points_mask; - - /* - * If new mask is zero - means there is nothing to mask, - * we can only unmask, which should be done in unmask. - */ - if (!new_mask) - return; - - /* - * Restrict required qgv points before updating the configuration. - * According to BSpec we can't mask and unmask qgv points at the same - * time. Also masking should be done before updating the configuration - * and unmasking afterwards. - */ - icl_pcode_restrict_qgv_points(dev_priv, new_mask); -} - -void intel_sagv_post_plane_update(struct intel_atomic_state *state) -{ - struct drm_i915_private *dev_priv = to_i915(state->base.dev); - const struct intel_bw_state *new_bw_state; - const struct intel_bw_state *old_bw_state; - u32 new_mask = 0; - - /* - * Just return if we can't control SAGV or don't have it. - * This is different from situation when we have SAGV but just can't - * afford it due to DBuf limitation - in case if SAGV is completely - * disabled in a BIOS, we are not even allowed to send a PCode request, - * as it will throw an error. So have to check it here. - */ - if (!intel_has_sagv(dev_priv)) - return; - - new_bw_state = intel_atomic_get_new_bw_state(state); - if (!new_bw_state) - return; - - if (DISPLAY_VER(dev_priv) < 11 && intel_can_enable_sagv(dev_priv, new_bw_state)) { - intel_enable_sagv(dev_priv); - return; - } - - old_bw_state = intel_atomic_get_old_bw_state(state); - /* - * Nothing to unmask - */ - if (new_bw_state->qgv_points_mask == old_bw_state->qgv_points_mask) - return; - - new_mask = new_bw_state->qgv_points_mask; - - /* - * Allow required qgv points after updating the configuration. - * According to BSpec we can't mask and unmask qgv points at the same - * time. Also masking should be done before updating the configuration - * and unmasking afterwards. - */ - icl_pcode_restrict_qgv_points(dev_priv, new_mask); -} - -static bool skl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - enum plane_id plane_id; - int max_level = INT_MAX; - - if (!intel_has_sagv(dev_priv)) - return false; - - if (!crtc_state->hw.active) - return true; - - if (crtc_state->hw.pipe_mode.flags & DRM_MODE_FLAG_INTERLACE) - return false; - - for_each_plane_id_on_crtc(crtc, plane_id) { - const struct skl_plane_wm *wm = - &crtc_state->wm.skl.optimal.planes[plane_id]; - int level; - - /* Skip this plane if it's not enabled */ - if (!wm->wm[0].enable) - continue; - - /* Find the highest enabled wm level for this plane */ - for (level = ilk_wm_max_level(dev_priv); - !wm->wm[level].enable; --level) - { } - - /* Highest common enabled wm level for all planes */ - max_level = min(level, max_level); - } - - /* No enabled planes? */ - if (max_level == INT_MAX) - return true; - - for_each_plane_id_on_crtc(crtc, plane_id) { - const struct skl_plane_wm *wm = - &crtc_state->wm.skl.optimal.planes[plane_id]; - - /* - * All enabled planes must have enabled a common wm level that - * can tolerate memory latencies higher than sagv_block_time_us - */ - if (wm->wm[0].enable && !wm->wm[max_level].can_sagv) - return false; - } - - return true; -} - -static bool tgl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - enum plane_id plane_id; - - if (!crtc_state->hw.active) - return true; - - for_each_plane_id_on_crtc(crtc, plane_id) { - const struct skl_plane_wm *wm = - &crtc_state->wm.skl.optimal.planes[plane_id]; - - if (wm->wm[0].enable && !wm->sagv.wm0.enable) - return false; - } - - return true; -} - -static bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - - if (DISPLAY_VER(dev_priv) >= 12) - return tgl_crtc_can_enable_sagv(crtc_state); - else - return skl_crtc_can_enable_sagv(crtc_state); -} - -bool intel_can_enable_sagv(struct drm_i915_private *dev_priv, - const struct intel_bw_state *bw_state) -{ - if (DISPLAY_VER(dev_priv) < 11 && - bw_state->active_pipes && !is_power_of_2(bw_state->active_pipes)) - return false; - - return bw_state->pipe_sagv_reject == 0; -} - -static int intel_compute_sagv_mask(struct intel_atomic_state *state) -{ - struct drm_i915_private *dev_priv = to_i915(state->base.dev); - int ret; - struct intel_crtc *crtc; - struct intel_crtc_state *new_crtc_state; - struct intel_bw_state *new_bw_state = NULL; - const struct intel_bw_state *old_bw_state = NULL; - int i; - - for_each_new_intel_crtc_in_state(state, crtc, - new_crtc_state, i) { - new_bw_state = intel_atomic_get_bw_state(state); - if (IS_ERR(new_bw_state)) - return PTR_ERR(new_bw_state); - - old_bw_state = intel_atomic_get_old_bw_state(state); - - if (intel_crtc_can_enable_sagv(new_crtc_state)) - new_bw_state->pipe_sagv_reject &= ~BIT(crtc->pipe); - else - new_bw_state->pipe_sagv_reject |= BIT(crtc->pipe); - } - - if (!new_bw_state) - return 0; - - new_bw_state->active_pipes = - intel_calc_active_pipes(state, old_bw_state->active_pipes); - - if (new_bw_state->active_pipes != old_bw_state->active_pipes) { - ret = intel_atomic_lock_global_state(&new_bw_state->base); - if (ret) - return ret; - } - - for_each_new_intel_crtc_in_state(state, crtc, - new_crtc_state, i) { - struct skl_pipe_wm *pipe_wm = &new_crtc_state->wm.skl.optimal; - - /* - * We store use_sagv_wm in the crtc state rather than relying on - * that bw state since we have no convenient way to get at the - * latter from the plane commit hooks (especially in the legacy - * cursor case) - */ - pipe_wm->use_sagv_wm = !HAS_HW_SAGV_WM(dev_priv) && - DISPLAY_VER(dev_priv) >= 12 && - intel_can_enable_sagv(dev_priv, new_bw_state); - } - - if (intel_can_enable_sagv(dev_priv, new_bw_state) != - intel_can_enable_sagv(dev_priv, old_bw_state)) { - ret = intel_atomic_serialize_global_state(&new_bw_state->base); - if (ret) - return ret; - } else if (new_bw_state->pipe_sagv_reject != old_bw_state->pipe_sagv_reject) { - ret = intel_atomic_lock_global_state(&new_bw_state->base); - if (ret) - return ret; - } - - return 0; -} - -static int intel_dbuf_slice_size(struct drm_i915_private *dev_priv) -{ - return INTEL_INFO(dev_priv)->dbuf.size / - hweight8(INTEL_INFO(dev_priv)->dbuf.slice_mask); -} - -static void -skl_ddb_entry_for_slices(struct drm_i915_private *dev_priv, u8 slice_mask, - struct skl_ddb_entry *ddb) -{ - int slice_size = intel_dbuf_slice_size(dev_priv); - - if (!slice_mask) { - ddb->start = 0; - ddb->end = 0; - return; - } - - ddb->start = (ffs(slice_mask) - 1) * slice_size; - ddb->end = fls(slice_mask) * slice_size; - - WARN_ON(ddb->start >= ddb->end); - WARN_ON(ddb->end > INTEL_INFO(dev_priv)->dbuf.size); -} - -static unsigned int mbus_ddb_offset(struct drm_i915_private *i915, u8 slice_mask) -{ - struct skl_ddb_entry ddb; - - if (slice_mask & (BIT(DBUF_S1) | BIT(DBUF_S2))) - slice_mask = BIT(DBUF_S1); - else if (slice_mask & (BIT(DBUF_S3) | BIT(DBUF_S4))) - slice_mask = BIT(DBUF_S3); - - skl_ddb_entry_for_slices(i915, slice_mask, &ddb); - - return ddb.start; -} - -u32 skl_ddb_dbuf_slice_mask(struct drm_i915_private *dev_priv, - const struct skl_ddb_entry *entry) -{ - int slice_size = intel_dbuf_slice_size(dev_priv); - enum dbuf_slice start_slice, end_slice; - u8 slice_mask = 0; - - if (!skl_ddb_entry_size(entry)) - return 0; - - start_slice = entry->start / slice_size; - end_slice = (entry->end - 1) / slice_size; - - /* - * Per plane DDB entry can in a really worst case be on multiple slices - * but single entry is anyway contigious. - */ - while (start_slice <= end_slice) { - slice_mask |= BIT(start_slice); - start_slice++; - } - - return slice_mask; -} - -static unsigned int intel_crtc_ddb_weight(const struct intel_crtc_state *crtc_state) -{ - const struct drm_display_mode *pipe_mode = &crtc_state->hw.pipe_mode; - int hdisplay, vdisplay; - - if (!crtc_state->hw.active) - return 0; - - /* - * Watermark/ddb requirement highly depends upon width of the - * framebuffer, So instead of allocating DDB equally among pipes - * distribute DDB based on resolution/width of the display. - */ - drm_mode_get_hv_timing(pipe_mode, &hdisplay, &vdisplay); - - return hdisplay; -} - -static void intel_crtc_dbuf_weights(const struct intel_dbuf_state *dbuf_state, - enum pipe for_pipe, - unsigned int *weight_start, - unsigned int *weight_end, - unsigned int *weight_total) -{ - struct drm_i915_private *dev_priv = - to_i915(dbuf_state->base.state->base.dev); - enum pipe pipe; - - *weight_start = 0; - *weight_end = 0; - *weight_total = 0; - - for_each_pipe(dev_priv, pipe) { - int weight = dbuf_state->weight[pipe]; - - /* - * Do not account pipes using other slice sets - * luckily as of current BSpec slice sets do not partially - * intersect(pipes share either same one slice or same slice set - * i.e no partial intersection), so it is enough to check for - * equality for now. - */ - if (dbuf_state->slices[pipe] != dbuf_state->slices[for_pipe]) - continue; - - *weight_total += weight; - if (pipe < for_pipe) { - *weight_start += weight; - *weight_end += weight; - } else if (pipe == for_pipe) { - *weight_end += weight; - } - } -} - -static int -skl_crtc_allocate_ddb(struct intel_atomic_state *state, struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - unsigned int weight_total, weight_start, weight_end; - const struct intel_dbuf_state *old_dbuf_state = - intel_atomic_get_old_dbuf_state(state); - struct intel_dbuf_state *new_dbuf_state = - intel_atomic_get_new_dbuf_state(state); - struct intel_crtc_state *crtc_state; - struct skl_ddb_entry ddb_slices; - enum pipe pipe = crtc->pipe; - unsigned int mbus_offset = 0; - u32 ddb_range_size; - u32 dbuf_slice_mask; - u32 start, end; - int ret; - - if (new_dbuf_state->weight[pipe] == 0) { - new_dbuf_state->ddb[pipe].start = 0; - new_dbuf_state->ddb[pipe].end = 0; - goto out; - } - - dbuf_slice_mask = new_dbuf_state->slices[pipe]; - - skl_ddb_entry_for_slices(dev_priv, dbuf_slice_mask, &ddb_slices); - mbus_offset = mbus_ddb_offset(dev_priv, dbuf_slice_mask); - ddb_range_size = skl_ddb_entry_size(&ddb_slices); - - intel_crtc_dbuf_weights(new_dbuf_state, pipe, - &weight_start, &weight_end, &weight_total); - - start = ddb_range_size * weight_start / weight_total; - end = ddb_range_size * weight_end / weight_total; - - new_dbuf_state->ddb[pipe].start = ddb_slices.start - mbus_offset + start; - new_dbuf_state->ddb[pipe].end = ddb_slices.start - mbus_offset + end; -out: - if (old_dbuf_state->slices[pipe] == new_dbuf_state->slices[pipe] && - skl_ddb_entry_equal(&old_dbuf_state->ddb[pipe], - &new_dbuf_state->ddb[pipe])) - return 0; - - ret = intel_atomic_lock_global_state(&new_dbuf_state->base); - if (ret) - return ret; - - crtc_state = intel_atomic_get_crtc_state(&state->base, crtc); - if (IS_ERR(crtc_state)) - return PTR_ERR(crtc_state); - - /* - * Used for checking overlaps, so we need absolute - * offsets instead of MBUS relative offsets. - */ - crtc_state->wm.skl.ddb.start = mbus_offset + new_dbuf_state->ddb[pipe].start; - crtc_state->wm.skl.ddb.end = mbus_offset + new_dbuf_state->ddb[pipe].end; - - drm_dbg_kms(&dev_priv->drm, - "[CRTC:%d:%s] dbuf slices 0x%x -> 0x%x, ddb (%d - %d) -> (%d - %d), active pipes 0x%x -> 0x%x\n", - crtc->base.base.id, crtc->base.name, - old_dbuf_state->slices[pipe], new_dbuf_state->slices[pipe], - old_dbuf_state->ddb[pipe].start, old_dbuf_state->ddb[pipe].end, - new_dbuf_state->ddb[pipe].start, new_dbuf_state->ddb[pipe].end, - old_dbuf_state->active_pipes, new_dbuf_state->active_pipes); - - return 0; -} - -static int skl_compute_wm_params(const struct intel_crtc_state *crtc_state, - int width, const struct drm_format_info *format, - u64 modifier, unsigned int rotation, - u32 plane_pixel_rate, struct skl_wm_params *wp, - int color_plane); -static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state, - int level, - unsigned int latency, - const struct skl_wm_params *wp, - const struct skl_wm_level *result_prev, - struct skl_wm_level *result /* out */); - -static unsigned int -skl_cursor_allocation(const struct intel_crtc_state *crtc_state, - int num_active) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - int level, max_level = ilk_wm_max_level(dev_priv); - struct skl_wm_level wm = {}; - int ret, min_ddb_alloc = 0; - struct skl_wm_params wp; - - ret = skl_compute_wm_params(crtc_state, 256, - drm_format_info(DRM_FORMAT_ARGB8888), - DRM_FORMAT_MOD_LINEAR, - DRM_MODE_ROTATE_0, - crtc_state->pixel_rate, &wp, 0); - drm_WARN_ON(&dev_priv->drm, ret); - - for (level = 0; level <= max_level; level++) { - unsigned int latency = dev_priv->wm.skl_latency[level]; - - skl_compute_plane_wm(crtc_state, level, latency, &wp, &wm, &wm); - if (wm.min_ddb_alloc == U16_MAX) - break; - - min_ddb_alloc = wm.min_ddb_alloc; - } - - return max(num_active == 1 ? 32 : 8, min_ddb_alloc); -} - -static void skl_ddb_entry_init_from_hw(struct drm_i915_private *dev_priv, - struct skl_ddb_entry *entry, u32 reg) -{ - entry->start = reg & DDB_ENTRY_MASK; - entry->end = (reg >> DDB_ENTRY_END_SHIFT) & DDB_ENTRY_MASK; - - if (entry->end) - entry->end += 1; -} - -static void -skl_ddb_get_hw_plane_state(struct drm_i915_private *dev_priv, - const enum pipe pipe, - const enum plane_id plane_id, - struct skl_ddb_entry *ddb_y, - struct skl_ddb_entry *ddb_uv) -{ - u32 val, val2; - u32 fourcc = 0; - - /* Cursor doesn't support NV12/planar, so no extra calculation needed */ - if (plane_id == PLANE_CURSOR) { - val = intel_uncore_read(&dev_priv->uncore, CUR_BUF_CFG(pipe)); - skl_ddb_entry_init_from_hw(dev_priv, ddb_y, val); - return; - } - - val = intel_uncore_read(&dev_priv->uncore, PLANE_CTL(pipe, plane_id)); - - /* No DDB allocated for disabled planes */ - if (val & PLANE_CTL_ENABLE) - fourcc = skl_format_to_fourcc(val & PLANE_CTL_FORMAT_MASK, - val & PLANE_CTL_ORDER_RGBX, - val & PLANE_CTL_ALPHA_MASK); - - if (DISPLAY_VER(dev_priv) >= 11) { - val = intel_uncore_read(&dev_priv->uncore, PLANE_BUF_CFG(pipe, plane_id)); - skl_ddb_entry_init_from_hw(dev_priv, ddb_y, val); - } else { - val = intel_uncore_read(&dev_priv->uncore, PLANE_BUF_CFG(pipe, plane_id)); - val2 = intel_uncore_read(&dev_priv->uncore, PLANE_NV12_BUF_CFG(pipe, plane_id)); - - if (fourcc && - drm_format_info_is_yuv_semiplanar(drm_format_info(fourcc))) - swap(val, val2); - - skl_ddb_entry_init_from_hw(dev_priv, ddb_y, val); - skl_ddb_entry_init_from_hw(dev_priv, ddb_uv, val2); - } -} - -void skl_pipe_ddb_get_hw_state(struct intel_crtc *crtc, - struct skl_ddb_entry *ddb_y, - struct skl_ddb_entry *ddb_uv) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - enum intel_display_power_domain power_domain; - enum pipe pipe = crtc->pipe; - intel_wakeref_t wakeref; - enum plane_id plane_id; - - power_domain = POWER_DOMAIN_PIPE(pipe); - wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain); - if (!wakeref) - return; - - for_each_plane_id_on_crtc(crtc, plane_id) - skl_ddb_get_hw_plane_state(dev_priv, pipe, - plane_id, - &ddb_y[plane_id], - &ddb_uv[plane_id]); - - intel_display_power_put(dev_priv, power_domain, wakeref); -} - -/* - * Determines the downscale amount of a plane for the purposes of watermark calculations. - * The bspec defines downscale amount as: - * - * """ - * Horizontal down scale amount = maximum[1, Horizontal source size / - * Horizontal destination size] - * Vertical down scale amount = maximum[1, Vertical source size / - * Vertical destination size] - * Total down scale amount = Horizontal down scale amount * - * Vertical down scale amount - * """ - * - * Return value is provided in 16.16 fixed point form to retain fractional part. - * Caller should take care of dividing & rounding off the value. - */ -static uint_fixed_16_16_t -skl_plane_downscale_amount(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - u32 src_w, src_h, dst_w, dst_h; - uint_fixed_16_16_t fp_w_ratio, fp_h_ratio; - uint_fixed_16_16_t downscale_h, downscale_w; - - if (drm_WARN_ON(&dev_priv->drm, - !intel_wm_plane_visible(crtc_state, plane_state))) - return u32_to_fixed16(0); - - /* - * Src coordinates are already rotated by 270 degrees for - * the 90/270 degree plane rotation cases (to match the - * GTT mapping), hence no need to account for rotation here. - * - * n.b., src is 16.16 fixed point, dst is whole integer. - */ - src_w = drm_rect_width(&plane_state->uapi.src) >> 16; - src_h = drm_rect_height(&plane_state->uapi.src) >> 16; - dst_w = drm_rect_width(&plane_state->uapi.dst); - dst_h = drm_rect_height(&plane_state->uapi.dst); - - fp_w_ratio = div_fixed16(src_w, dst_w); - fp_h_ratio = div_fixed16(src_h, dst_h); - downscale_w = max_fixed16(fp_w_ratio, u32_to_fixed16(1)); - downscale_h = max_fixed16(fp_h_ratio, u32_to_fixed16(1)); - - return mul_fixed16(downscale_w, downscale_h); -} - -struct dbuf_slice_conf_entry { - u8 active_pipes; - u8 dbuf_mask[I915_MAX_PIPES]; - bool join_mbus; -}; - -/* - * Table taken from Bspec 12716 - * Pipes do have some preferred DBuf slice affinity, - * plus there are some hardcoded requirements on how - * those should be distributed for multipipe scenarios. - * For more DBuf slices algorithm can get even more messy - * and less readable, so decided to use a table almost - * as is from BSpec itself - that way it is at least easier - * to compare, change and check. - */ -static const struct dbuf_slice_conf_entry icl_allowed_dbufs[] = -/* Autogenerated with igt/tools/intel_dbuf_map tool: */ -{ - { - .active_pipes = BIT(PIPE_A), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1), - }, - }, - { - .active_pipes = BIT(PIPE_B), - .dbuf_mask = { - [PIPE_B] = BIT(DBUF_S1), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_B), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1), - [PIPE_B] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_C), - .dbuf_mask = { - [PIPE_C] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_C), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1), - [PIPE_C] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_B) | BIT(PIPE_C), - .dbuf_mask = { - [PIPE_B] = BIT(DBUF_S1), - [PIPE_C] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1), - [PIPE_B] = BIT(DBUF_S1), - [PIPE_C] = BIT(DBUF_S2), - }, - }, - {} -}; - -/* - * Table taken from Bspec 49255 - * Pipes do have some preferred DBuf slice affinity, - * plus there are some hardcoded requirements on how - * those should be distributed for multipipe scenarios. - * For more DBuf slices algorithm can get even more messy - * and less readable, so decided to use a table almost - * as is from BSpec itself - that way it is at least easier - * to compare, change and check. - */ -static const struct dbuf_slice_conf_entry tgl_allowed_dbufs[] = -/* Autogenerated with igt/tools/intel_dbuf_map tool: */ -{ - { - .active_pipes = BIT(PIPE_A), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_B), - .dbuf_mask = { - [PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_B), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S2), - [PIPE_B] = BIT(DBUF_S1), - }, - }, - { - .active_pipes = BIT(PIPE_C), - .dbuf_mask = { - [PIPE_C] = BIT(DBUF_S2) | BIT(DBUF_S1), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_C), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1), - [PIPE_C] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_B) | BIT(PIPE_C), - .dbuf_mask = { - [PIPE_B] = BIT(DBUF_S1), - [PIPE_C] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1), - [PIPE_B] = BIT(DBUF_S1), - [PIPE_C] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_D), - .dbuf_mask = { - [PIPE_D] = BIT(DBUF_S2) | BIT(DBUF_S1), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1), - [PIPE_D] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_B) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_B] = BIT(DBUF_S1), - [PIPE_D] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1), - [PIPE_B] = BIT(DBUF_S1), - [PIPE_D] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_C) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_C] = BIT(DBUF_S1), - [PIPE_D] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1), - [PIPE_C] = BIT(DBUF_S2), - [PIPE_D] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_B] = BIT(DBUF_S1), - [PIPE_C] = BIT(DBUF_S2), - [PIPE_D] = BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1), - [PIPE_B] = BIT(DBUF_S1), - [PIPE_C] = BIT(DBUF_S2), - [PIPE_D] = BIT(DBUF_S2), - }, - }, - {} -}; - -static const struct dbuf_slice_conf_entry adlp_allowed_dbufs[] = { - { - .active_pipes = BIT(PIPE_A), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2) | BIT(DBUF_S3) | BIT(DBUF_S4), - }, - .join_mbus = true, - }, - { - .active_pipes = BIT(PIPE_B), - .dbuf_mask = { - [PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2) | BIT(DBUF_S3) | BIT(DBUF_S4), - }, - .join_mbus = true, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_B), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), - [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), - }, - }, - { - .active_pipes = BIT(PIPE_C), - .dbuf_mask = { - [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_C), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), - [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), - }, - }, - { - .active_pipes = BIT(PIPE_B) | BIT(PIPE_C), - .dbuf_mask = { - [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), - [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), - [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), - [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), - }, - }, - { - .active_pipes = BIT(PIPE_D), - .dbuf_mask = { - [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), - [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_B) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), - [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), - [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), - [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_C) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), - [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), - [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), - [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), - [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), - [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), - }, - }, - { - .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), - .dbuf_mask = { - [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), - [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), - [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), - [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), - }, - }, - {} - -}; - -static bool check_mbus_joined(u8 active_pipes, - const struct dbuf_slice_conf_entry *dbuf_slices) -{ - int i; - - for (i = 0; i < dbuf_slices[i].active_pipes; i++) { - if (dbuf_slices[i].active_pipes == active_pipes) - return dbuf_slices[i].join_mbus; - } - return false; -} - -static bool adlp_check_mbus_joined(u8 active_pipes) -{ - return check_mbus_joined(active_pipes, adlp_allowed_dbufs); -} - -static u8 compute_dbuf_slices(enum pipe pipe, u8 active_pipes, - const struct dbuf_slice_conf_entry *dbuf_slices) -{ - int i; - - for (i = 0; i < dbuf_slices[i].active_pipes; i++) { - if (dbuf_slices[i].active_pipes == active_pipes) - return dbuf_slices[i].dbuf_mask[pipe]; - } - return 0; -} - -/* - * This function finds an entry with same enabled pipe configuration and - * returns correspondent DBuf slice mask as stated in BSpec for particular - * platform. - */ -static u8 icl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes) -{ - /* - * FIXME: For ICL this is still a bit unclear as prev BSpec revision - * required calculating "pipe ratio" in order to determine - * if one or two slices can be used for single pipe configurations - * as additional constraint to the existing table. - * However based on recent info, it should be not "pipe ratio" - * but rather ratio between pixel_rate and cdclk with additional - * constants, so for now we are using only table until this is - * clarified. Also this is the reason why crtc_state param is - * still here - we will need it once those additional constraints - * pop up. - */ - return compute_dbuf_slices(pipe, active_pipes, icl_allowed_dbufs); -} - -static u8 tgl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes) -{ - return compute_dbuf_slices(pipe, active_pipes, tgl_allowed_dbufs); -} - -static u32 adlp_compute_dbuf_slices(enum pipe pipe, u32 active_pipes) -{ - return compute_dbuf_slices(pipe, active_pipes, adlp_allowed_dbufs); -} - -static u8 skl_compute_dbuf_slices(struct intel_crtc *crtc, u8 active_pipes) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - enum pipe pipe = crtc->pipe; - - if (IS_ALDERLAKE_P(dev_priv)) - return adlp_compute_dbuf_slices(pipe, active_pipes); - else if (DISPLAY_VER(dev_priv) == 12) - return tgl_compute_dbuf_slices(pipe, active_pipes); - else if (DISPLAY_VER(dev_priv) == 11) - return icl_compute_dbuf_slices(pipe, active_pipes); - /* - * For anything else just return one slice yet. - * Should be extended for other platforms. - */ - return active_pipes & BIT(pipe) ? BIT(DBUF_S1) : 0; -} - -static u64 -skl_plane_relative_data_rate(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - int color_plane) -{ - struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); - const struct drm_framebuffer *fb = plane_state->hw.fb; - u32 data_rate; - u32 width = 0, height = 0; - uint_fixed_16_16_t down_scale_amount; - u64 rate; - - if (!plane_state->uapi.visible) - return 0; - - if (plane->id == PLANE_CURSOR) - return 0; - - if (color_plane == 1 && - !intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) - return 0; - - /* - * Src coordinates are already rotated by 270 degrees for - * the 90/270 degree plane rotation cases (to match the - * GTT mapping), hence no need to account for rotation here. - */ - width = drm_rect_width(&plane_state->uapi.src) >> 16; - height = drm_rect_height(&plane_state->uapi.src) >> 16; - - /* UV plane does 1/2 pixel sub-sampling */ - if (color_plane == 1) { - width /= 2; - height /= 2; - } - - data_rate = width * height; - - down_scale_amount = skl_plane_downscale_amount(crtc_state, plane_state); - - rate = mul_round_up_u32_fixed16(data_rate, down_scale_amount); - - rate *= fb->format->cpp[color_plane]; - return rate; -} - -static u64 -skl_get_total_relative_data_rate(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - const struct intel_plane_state *plane_state; - struct intel_plane *plane; - u64 total_data_rate = 0; - enum plane_id plane_id; - int i; - - /* Calculate and cache data rate for each plane */ - for_each_new_intel_plane_in_state(state, plane, plane_state, i) { - if (plane->pipe != crtc->pipe) - continue; - - plane_id = plane->id; - - /* packed/y */ - crtc_state->plane_data_rate[plane_id] = - skl_plane_relative_data_rate(crtc_state, plane_state, 0); - - /* uv-plane */ - crtc_state->uv_plane_data_rate[plane_id] = - skl_plane_relative_data_rate(crtc_state, plane_state, 1); - } - - for_each_plane_id_on_crtc(crtc, plane_id) { - total_data_rate += crtc_state->plane_data_rate[plane_id]; - total_data_rate += crtc_state->uv_plane_data_rate[plane_id]; - } - - return total_data_rate; -} - -static u64 -icl_get_total_relative_data_rate(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - const struct intel_plane_state *plane_state; - struct intel_plane *plane; - u64 total_data_rate = 0; - enum plane_id plane_id; - int i; - - /* Calculate and cache data rate for each plane */ - for_each_new_intel_plane_in_state(state, plane, plane_state, i) { - if (plane->pipe != crtc->pipe) - continue; - - plane_id = plane->id; - - if (!plane_state->planar_linked_plane) { - crtc_state->plane_data_rate[plane_id] = - skl_plane_relative_data_rate(crtc_state, plane_state, 0); - } else { - enum plane_id y_plane_id; - - /* - * The slave plane might not iterate in - * intel_atomic_crtc_state_for_each_plane_state(), - * and needs the master plane state which may be - * NULL if we try get_new_plane_state(), so we - * always calculate from the master. - */ - if (plane_state->planar_slave) - continue; - - /* Y plane rate is calculated on the slave */ - y_plane_id = plane_state->planar_linked_plane->id; - crtc_state->plane_data_rate[y_plane_id] = - skl_plane_relative_data_rate(crtc_state, plane_state, 0); - - crtc_state->plane_data_rate[plane_id] = - skl_plane_relative_data_rate(crtc_state, plane_state, 1); - } - } - - for_each_plane_id_on_crtc(crtc, plane_id) - total_data_rate += crtc_state->plane_data_rate[plane_id]; - - return total_data_rate; -} - -const struct skl_wm_level * -skl_plane_wm_level(const struct skl_pipe_wm *pipe_wm, - enum plane_id plane_id, - int level) -{ - const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id]; - - if (level == 0 && pipe_wm->use_sagv_wm) - return &wm->sagv.wm0; - - return &wm->wm[level]; -} - -const struct skl_wm_level * -skl_plane_trans_wm(const struct skl_pipe_wm *pipe_wm, - enum plane_id plane_id) -{ - const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id]; - - if (pipe_wm->use_sagv_wm) - return &wm->sagv.trans_wm; - - return &wm->trans_wm; -} - -/* - * We only disable the watermarks for each plane if - * they exceed the ddb allocation of said plane. This - * is done so that we don't end up touching cursor - * watermarks needlessly when some other plane reduces - * our max possible watermark level. - * - * Bspec has this to say about the PLANE_WM enable bit: - * "All the watermarks at this level for all enabled - * planes must be enabled before the level will be used." - * So this is actually safe to do. - */ -static void -skl_check_wm_level(struct skl_wm_level *wm, u64 total) -{ - if (wm->min_ddb_alloc > total) - memset(wm, 0, sizeof(*wm)); -} - -static void -skl_check_nv12_wm_level(struct skl_wm_level *wm, struct skl_wm_level *uv_wm, - u64 total, u64 uv_total) -{ - if (wm->min_ddb_alloc > total || - uv_wm->min_ddb_alloc > uv_total) { - memset(wm, 0, sizeof(*wm)); - memset(uv_wm, 0, sizeof(*uv_wm)); - } -} - -static int -skl_allocate_plane_ddb(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - const struct intel_dbuf_state *dbuf_state = - intel_atomic_get_new_dbuf_state(state); - const struct skl_ddb_entry *alloc = &dbuf_state->ddb[crtc->pipe]; - int num_active = hweight8(dbuf_state->active_pipes); - u16 alloc_size, start = 0; - u16 total[I915_MAX_PLANES] = {}; - u16 uv_total[I915_MAX_PLANES] = {}; - u64 total_data_rate; - enum plane_id plane_id; - u32 blocks; - int level; - - /* Clear the partitioning for disabled planes. */ - memset(crtc_state->wm.skl.plane_ddb_y, 0, sizeof(crtc_state->wm.skl.plane_ddb_y)); - memset(crtc_state->wm.skl.plane_ddb_uv, 0, sizeof(crtc_state->wm.skl.plane_ddb_uv)); - - if (!crtc_state->hw.active) - return 0; - - if (DISPLAY_VER(dev_priv) >= 11) - total_data_rate = - icl_get_total_relative_data_rate(state, crtc); - else - total_data_rate = - skl_get_total_relative_data_rate(state, crtc); - - alloc_size = skl_ddb_entry_size(alloc); - if (alloc_size == 0) - return 0; - - /* Allocate fixed number of blocks for cursor. */ - total[PLANE_CURSOR] = skl_cursor_allocation(crtc_state, num_active); - alloc_size -= total[PLANE_CURSOR]; - crtc_state->wm.skl.plane_ddb_y[PLANE_CURSOR].start = - alloc->end - total[PLANE_CURSOR]; - crtc_state->wm.skl.plane_ddb_y[PLANE_CURSOR].end = alloc->end; - - if (total_data_rate == 0) - return 0; - - /* - * Find the highest watermark level for which we can satisfy the block - * requirement of active planes. - */ - for (level = ilk_wm_max_level(dev_priv); level >= 0; level--) { - blocks = 0; - for_each_plane_id_on_crtc(crtc, plane_id) { - const struct skl_plane_wm *wm = - &crtc_state->wm.skl.optimal.planes[plane_id]; - - if (plane_id == PLANE_CURSOR) { - if (wm->wm[level].min_ddb_alloc > total[PLANE_CURSOR]) { - drm_WARN_ON(&dev_priv->drm, - wm->wm[level].min_ddb_alloc != U16_MAX); - blocks = U32_MAX; - break; - } - continue; - } - - blocks += wm->wm[level].min_ddb_alloc; - blocks += wm->uv_wm[level].min_ddb_alloc; - } - - if (blocks <= alloc_size) { - alloc_size -= blocks; - break; - } - } - - if (level < 0) { - drm_dbg_kms(&dev_priv->drm, - "Requested display configuration exceeds system DDB limitations"); - drm_dbg_kms(&dev_priv->drm, "minimum required %d/%d\n", - blocks, alloc_size); - return -EINVAL; - } - - /* - * Grant each plane the blocks it requires at the highest achievable - * watermark level, plus an extra share of the leftover blocks - * proportional to its relative data rate. - */ - for_each_plane_id_on_crtc(crtc, plane_id) { - const struct skl_plane_wm *wm = - &crtc_state->wm.skl.optimal.planes[plane_id]; - u64 rate; - u16 extra; - - if (plane_id == PLANE_CURSOR) - continue; - - /* - * We've accounted for all active planes; remaining planes are - * all disabled. - */ - if (total_data_rate == 0) - break; - - rate = crtc_state->plane_data_rate[plane_id]; - extra = min_t(u16, alloc_size, - DIV64_U64_ROUND_UP(alloc_size * rate, - total_data_rate)); - total[plane_id] = wm->wm[level].min_ddb_alloc + extra; - alloc_size -= extra; - total_data_rate -= rate; - - if (total_data_rate == 0) - break; - - rate = crtc_state->uv_plane_data_rate[plane_id]; - extra = min_t(u16, alloc_size, - DIV64_U64_ROUND_UP(alloc_size * rate, - total_data_rate)); - uv_total[plane_id] = wm->uv_wm[level].min_ddb_alloc + extra; - alloc_size -= extra; - total_data_rate -= rate; - } - drm_WARN_ON(&dev_priv->drm, alloc_size != 0 || total_data_rate != 0); - - /* Set the actual DDB start/end points for each plane */ - start = alloc->start; - for_each_plane_id_on_crtc(crtc, plane_id) { - struct skl_ddb_entry *plane_alloc = - &crtc_state->wm.skl.plane_ddb_y[plane_id]; - struct skl_ddb_entry *uv_plane_alloc = - &crtc_state->wm.skl.plane_ddb_uv[plane_id]; - - if (plane_id == PLANE_CURSOR) - continue; - - /* Gen11+ uses a separate plane for UV watermarks */ - drm_WARN_ON(&dev_priv->drm, - DISPLAY_VER(dev_priv) >= 11 && uv_total[plane_id]); - - /* Leave disabled planes at (0,0) */ - if (total[plane_id]) { - plane_alloc->start = start; - start += total[plane_id]; - plane_alloc->end = start; - } - - if (uv_total[plane_id]) { - uv_plane_alloc->start = start; - start += uv_total[plane_id]; - uv_plane_alloc->end = start; - } - } - - /* - * When we calculated watermark values we didn't know how high - * of a level we'd actually be able to hit, so we just marked - * all levels as "enabled." Go back now and disable the ones - * that aren't actually possible. - */ - for (level++; level <= ilk_wm_max_level(dev_priv); level++) { - for_each_plane_id_on_crtc(crtc, plane_id) { - struct skl_plane_wm *wm = - &crtc_state->wm.skl.optimal.planes[plane_id]; - - skl_check_nv12_wm_level(&wm->wm[level], &wm->uv_wm[level], - total[plane_id], uv_total[plane_id]); - - /* - * Wa_1408961008:icl, ehl - * Underruns with WM1+ disabled - */ - if (DISPLAY_VER(dev_priv) == 11 && - level == 1 && wm->wm[0].enable) { - wm->wm[level].blocks = wm->wm[0].blocks; - wm->wm[level].lines = wm->wm[0].lines; - wm->wm[level].ignore_lines = wm->wm[0].ignore_lines; - } - } - } - - /* - * Go back and disable the transition and SAGV watermarks - * if it turns out we don't have enough DDB blocks for them. - */ - for_each_plane_id_on_crtc(crtc, plane_id) { - struct skl_plane_wm *wm = - &crtc_state->wm.skl.optimal.planes[plane_id]; - - skl_check_wm_level(&wm->trans_wm, total[plane_id]); - skl_check_wm_level(&wm->sagv.wm0, total[plane_id]); - skl_check_wm_level(&wm->sagv.trans_wm, total[plane_id]); - } - - return 0; -} - -/* - * The max latency should be 257 (max the punit can code is 255 and we add 2us - * for the read latency) and cpp should always be <= 8, so that - * should allow pixel_rate up to ~2 GHz which seems sufficient since max - * 2xcdclk is 1350 MHz and the pixel rate should never exceed that. -*/ -static uint_fixed_16_16_t -skl_wm_method1(const struct drm_i915_private *dev_priv, u32 pixel_rate, - u8 cpp, u32 latency, u32 dbuf_block_size) -{ - u32 wm_intermediate_val; - uint_fixed_16_16_t ret; - - if (latency == 0) - return FP_16_16_MAX; - - wm_intermediate_val = latency * pixel_rate * cpp; - ret = div_fixed16(wm_intermediate_val, 1000 * dbuf_block_size); - - if (DISPLAY_VER(dev_priv) >= 10) - ret = add_fixed16_u32(ret, 1); - - return ret; -} - -static uint_fixed_16_16_t -skl_wm_method2(u32 pixel_rate, u32 pipe_htotal, u32 latency, - uint_fixed_16_16_t plane_blocks_per_line) -{ - u32 wm_intermediate_val; - uint_fixed_16_16_t ret; - - if (latency == 0) - return FP_16_16_MAX; - - wm_intermediate_val = latency * pixel_rate; - wm_intermediate_val = DIV_ROUND_UP(wm_intermediate_val, - pipe_htotal * 1000); - ret = mul_u32_fixed16(wm_intermediate_val, plane_blocks_per_line); - return ret; -} - -static uint_fixed_16_16_t -intel_get_linetime_us(const struct intel_crtc_state *crtc_state) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - u32 pixel_rate; - u32 crtc_htotal; - uint_fixed_16_16_t linetime_us; - - if (!crtc_state->hw.active) - return u32_to_fixed16(0); - - pixel_rate = crtc_state->pixel_rate; - - if (drm_WARN_ON(&dev_priv->drm, pixel_rate == 0)) - return u32_to_fixed16(0); - - crtc_htotal = crtc_state->hw.pipe_mode.crtc_htotal; - linetime_us = div_fixed16(crtc_htotal * 1000, pixel_rate); - - return linetime_us; -} - -static int -skl_compute_wm_params(const struct intel_crtc_state *crtc_state, - int width, const struct drm_format_info *format, - u64 modifier, unsigned int rotation, - u32 plane_pixel_rate, struct skl_wm_params *wp, - int color_plane) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - u32 interm_pbpl; - - /* only planar format has two planes */ - if (color_plane == 1 && - !intel_format_info_is_yuv_semiplanar(format, modifier)) { - drm_dbg_kms(&dev_priv->drm, - "Non planar format have single plane\n"); - return -EINVAL; - } - - wp->y_tiled = modifier == I915_FORMAT_MOD_Y_TILED || - modifier == I915_FORMAT_MOD_Yf_TILED || - modifier == I915_FORMAT_MOD_Y_TILED_CCS || - modifier == I915_FORMAT_MOD_Yf_TILED_CCS; - wp->x_tiled = modifier == I915_FORMAT_MOD_X_TILED; - wp->rc_surface = modifier == I915_FORMAT_MOD_Y_TILED_CCS || - modifier == I915_FORMAT_MOD_Yf_TILED_CCS; - wp->is_planar = intel_format_info_is_yuv_semiplanar(format, modifier); - - wp->width = width; - if (color_plane == 1 && wp->is_planar) - wp->width /= 2; - - wp->cpp = format->cpp[color_plane]; - wp->plane_pixel_rate = plane_pixel_rate; - - if (DISPLAY_VER(dev_priv) >= 11 && - modifier == I915_FORMAT_MOD_Yf_TILED && wp->cpp == 1) - wp->dbuf_block_size = 256; - else - wp->dbuf_block_size = 512; - - if (drm_rotation_90_or_270(rotation)) { - switch (wp->cpp) { - case 1: - wp->y_min_scanlines = 16; - break; - case 2: - wp->y_min_scanlines = 8; - break; - case 4: - wp->y_min_scanlines = 4; - break; - default: - MISSING_CASE(wp->cpp); - return -EINVAL; - } - } else { - wp->y_min_scanlines = 4; - } - - if (skl_needs_memory_bw_wa(dev_priv)) - wp->y_min_scanlines *= 2; - - wp->plane_bytes_per_line = wp->width * wp->cpp; - if (wp->y_tiled) { - interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line * - wp->y_min_scanlines, - wp->dbuf_block_size); - - if (DISPLAY_VER(dev_priv) >= 10) - interm_pbpl++; - - wp->plane_blocks_per_line = div_fixed16(interm_pbpl, - wp->y_min_scanlines); - } else { - interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line, - wp->dbuf_block_size); - - if (!wp->x_tiled || DISPLAY_VER(dev_priv) >= 10) - interm_pbpl++; - - wp->plane_blocks_per_line = u32_to_fixed16(interm_pbpl); - } - - wp->y_tile_minimum = mul_u32_fixed16(wp->y_min_scanlines, - wp->plane_blocks_per_line); - - wp->linetime_us = fixed16_to_u32_round_up( - intel_get_linetime_us(crtc_state)); - - return 0; -} - -static int -skl_compute_plane_wm_params(const struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - struct skl_wm_params *wp, int color_plane) -{ - const struct drm_framebuffer *fb = plane_state->hw.fb; - int width; - - /* - * Src coordinates are already rotated by 270 degrees for - * the 90/270 degree plane rotation cases (to match the - * GTT mapping), hence no need to account for rotation here. - */ - width = drm_rect_width(&plane_state->uapi.src) >> 16; - - return skl_compute_wm_params(crtc_state, width, - fb->format, fb->modifier, - plane_state->hw.rotation, - intel_plane_pixel_rate(crtc_state, plane_state), - wp, color_plane); -} - -static bool skl_wm_has_lines(struct drm_i915_private *dev_priv, int level) -{ - if (DISPLAY_VER(dev_priv) >= 10) - return true; - - /* The number of lines are ignored for the level 0 watermark. */ - return level > 0; -} - -static int skl_wm_max_lines(struct drm_i915_private *dev_priv) -{ - if (DISPLAY_VER(dev_priv) >= 13) - return 255; - else - return 31; -} - -static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state, - int level, - unsigned int latency, - const struct skl_wm_params *wp, - const struct skl_wm_level *result_prev, - struct skl_wm_level *result /* out */) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - uint_fixed_16_16_t method1, method2; - uint_fixed_16_16_t selected_result; - u32 blocks, lines, min_ddb_alloc = 0; - - if (latency == 0) { - /* reject it */ - result->min_ddb_alloc = U16_MAX; - return; - } - - /* - * WaIncreaseLatencyIPCEnabled: kbl,cfl - * Display WA #1141: kbl,cfl - */ - if ((IS_KABYLAKE(dev_priv) || - IS_COFFEELAKE(dev_priv) || - IS_COMETLAKE(dev_priv)) && - dev_priv->ipc_enabled) - latency += 4; - - if (skl_needs_memory_bw_wa(dev_priv) && wp->x_tiled) - latency += 15; - - method1 = skl_wm_method1(dev_priv, wp->plane_pixel_rate, - wp->cpp, latency, wp->dbuf_block_size); - method2 = skl_wm_method2(wp->plane_pixel_rate, - crtc_state->hw.pipe_mode.crtc_htotal, - latency, - wp->plane_blocks_per_line); - - if (wp->y_tiled) { - selected_result = max_fixed16(method2, wp->y_tile_minimum); - } else { - if ((wp->cpp * crtc_state->hw.pipe_mode.crtc_htotal / - wp->dbuf_block_size < 1) && - (wp->plane_bytes_per_line / wp->dbuf_block_size < 1)) { - selected_result = method2; - } else if (latency >= wp->linetime_us) { - if (DISPLAY_VER(dev_priv) == 9) - selected_result = min_fixed16(method1, method2); - else - selected_result = method2; - } else { - selected_result = method1; - } - } - - blocks = fixed16_to_u32_round_up(selected_result) + 1; - lines = div_round_up_fixed16(selected_result, - wp->plane_blocks_per_line); - - if (DISPLAY_VER(dev_priv) == 9) { - /* Display WA #1125: skl,bxt,kbl */ - if (level == 0 && wp->rc_surface) - blocks += fixed16_to_u32_round_up(wp->y_tile_minimum); - - /* Display WA #1126: skl,bxt,kbl */ - if (level >= 1 && level <= 7) { - if (wp->y_tiled) { - blocks += fixed16_to_u32_round_up(wp->y_tile_minimum); - lines += wp->y_min_scanlines; - } else { - blocks++; - } - - /* - * Make sure result blocks for higher latency levels are - * atleast as high as level below the current level. - * Assumption in DDB algorithm optimization for special - * cases. Also covers Display WA #1125 for RC. - */ - if (result_prev->blocks > blocks) - blocks = result_prev->blocks; - } - } - - if (DISPLAY_VER(dev_priv) >= 11) { - if (wp->y_tiled) { - int extra_lines; - - if (lines % wp->y_min_scanlines == 0) - extra_lines = wp->y_min_scanlines; - else - extra_lines = wp->y_min_scanlines * 2 - - lines % wp->y_min_scanlines; - - min_ddb_alloc = mul_round_up_u32_fixed16(lines + extra_lines, - wp->plane_blocks_per_line); - } else { - min_ddb_alloc = blocks + DIV_ROUND_UP(blocks, 10); - } - } - - if (!skl_wm_has_lines(dev_priv, level)) - lines = 0; - - if (lines > skl_wm_max_lines(dev_priv)) { - /* reject it */ - result->min_ddb_alloc = U16_MAX; - return; - } - - /* - * If lines is valid, assume we can use this watermark level - * for now. We'll come back and disable it after we calculate the - * DDB allocation if it turns out we don't actually have enough - * blocks to satisfy it. - */ - result->blocks = blocks; - result->lines = lines; - /* Bspec says: value >= plane ddb allocation -> invalid, hence the +1 here */ - result->min_ddb_alloc = max(min_ddb_alloc, blocks) + 1; - result->enable = true; - - if (DISPLAY_VER(dev_priv) < 12) - result->can_sagv = latency >= dev_priv->sagv_block_time_us; -} - -static void -skl_compute_wm_levels(const struct intel_crtc_state *crtc_state, - const struct skl_wm_params *wm_params, - struct skl_wm_level *levels) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - int level, max_level = ilk_wm_max_level(dev_priv); - struct skl_wm_level *result_prev = &levels[0]; - - for (level = 0; level <= max_level; level++) { - struct skl_wm_level *result = &levels[level]; - unsigned int latency = dev_priv->wm.skl_latency[level]; - - skl_compute_plane_wm(crtc_state, level, latency, - wm_params, result_prev, result); - - result_prev = result; - } -} - -static void tgl_compute_sagv_wm(const struct intel_crtc_state *crtc_state, - const struct skl_wm_params *wm_params, - struct skl_plane_wm *plane_wm) -{ - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - struct skl_wm_level *sagv_wm = &plane_wm->sagv.wm0; - struct skl_wm_level *levels = plane_wm->wm; - unsigned int latency = dev_priv->wm.skl_latency[0] + dev_priv->sagv_block_time_us; - - skl_compute_plane_wm(crtc_state, 0, latency, - wm_params, &levels[0], - sagv_wm); -} - -static void skl_compute_transition_wm(struct drm_i915_private *dev_priv, - struct skl_wm_level *trans_wm, - const struct skl_wm_level *wm0, - const struct skl_wm_params *wp) -{ - u16 trans_min, trans_amount, trans_y_tile_min; - u16 wm0_blocks, trans_offset, blocks; - - /* Transition WM don't make any sense if ipc is disabled */ - if (!dev_priv->ipc_enabled) - return; - - /* - * WaDisableTWM:skl,kbl,cfl,bxt - * Transition WM are not recommended by HW team for GEN9 - */ - if (DISPLAY_VER(dev_priv) == 9) - return; - - if (DISPLAY_VER(dev_priv) >= 11) - trans_min = 4; - else - trans_min = 14; - - /* Display WA #1140: glk,cnl */ - if (DISPLAY_VER(dev_priv) == 10) - trans_amount = 0; - else - trans_amount = 10; /* This is configurable amount */ - - trans_offset = trans_min + trans_amount; - - /* - * The spec asks for Selected Result Blocks for wm0 (the real value), - * not Result Blocks (the integer value). Pay attention to the capital - * letters. The value wm_l0->blocks is actually Result Blocks, but - * since Result Blocks is the ceiling of Selected Result Blocks plus 1, - * and since we later will have to get the ceiling of the sum in the - * transition watermarks calculation, we can just pretend Selected - * Result Blocks is Result Blocks minus 1 and it should work for the - * current platforms. - */ - wm0_blocks = wm0->blocks - 1; - - if (wp->y_tiled) { - trans_y_tile_min = - (u16)mul_round_up_u32_fixed16(2, wp->y_tile_minimum); - blocks = max(wm0_blocks, trans_y_tile_min) + trans_offset; - } else { - blocks = wm0_blocks + trans_offset; - } - blocks++; - - /* - * Just assume we can enable the transition watermark. After - * computing the DDB we'll come back and disable it if that - * assumption turns out to be false. - */ - trans_wm->blocks = blocks; - trans_wm->min_ddb_alloc = max_t(u16, wm0->min_ddb_alloc, blocks + 1); - trans_wm->enable = true; -} - -static int skl_build_plane_wm_single(struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - enum plane_id plane_id, int color_plane) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id]; - struct skl_wm_params wm_params; - int ret; - - ret = skl_compute_plane_wm_params(crtc_state, plane_state, - &wm_params, color_plane); - if (ret) - return ret; - - skl_compute_wm_levels(crtc_state, &wm_params, wm->wm); - - skl_compute_transition_wm(dev_priv, &wm->trans_wm, - &wm->wm[0], &wm_params); - - if (DISPLAY_VER(dev_priv) >= 12) { - tgl_compute_sagv_wm(crtc_state, &wm_params, wm); - - skl_compute_transition_wm(dev_priv, &wm->sagv.trans_wm, - &wm->sagv.wm0, &wm_params); - } - - return 0; -} - -static int skl_build_plane_wm_uv(struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state, - enum plane_id plane_id) -{ - struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id]; - struct skl_wm_params wm_params; - int ret; - - wm->is_planar = true; - - /* uv plane watermarks must also be validated for NV12/Planar */ - ret = skl_compute_plane_wm_params(crtc_state, plane_state, - &wm_params, 1); - if (ret) - return ret; - - skl_compute_wm_levels(crtc_state, &wm_params, wm->uv_wm); - - return 0; -} - -static int skl_build_plane_wm(struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state) -{ - struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); - enum plane_id plane_id = plane->id; - struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id]; - const struct drm_framebuffer *fb = plane_state->hw.fb; - int ret; - - memset(wm, 0, sizeof(*wm)); - - if (!intel_wm_plane_visible(crtc_state, plane_state)) - return 0; - - ret = skl_build_plane_wm_single(crtc_state, plane_state, - plane_id, 0); - if (ret) - return ret; - - if (fb->format->is_yuv && fb->format->num_planes > 1) { - ret = skl_build_plane_wm_uv(crtc_state, plane_state, - plane_id); - if (ret) - return ret; - } - - return 0; -} - -static int icl_build_plane_wm(struct intel_crtc_state *crtc_state, - const struct intel_plane_state *plane_state) -{ - struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); - struct drm_i915_private *dev_priv = to_i915(plane->base.dev); - enum plane_id plane_id = plane->id; - struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id]; - int ret; - - /* Watermarks calculated in master */ - if (plane_state->planar_slave) - return 0; - - memset(wm, 0, sizeof(*wm)); - - if (plane_state->planar_linked_plane) { - const struct drm_framebuffer *fb = plane_state->hw.fb; - enum plane_id y_plane_id = plane_state->planar_linked_plane->id; - - drm_WARN_ON(&dev_priv->drm, - !intel_wm_plane_visible(crtc_state, plane_state)); - drm_WARN_ON(&dev_priv->drm, !fb->format->is_yuv || - fb->format->num_planes == 1); - - ret = skl_build_plane_wm_single(crtc_state, plane_state, - y_plane_id, 0); - if (ret) - return ret; - - ret = skl_build_plane_wm_single(crtc_state, plane_state, - plane_id, 1); - if (ret) - return ret; - } else if (intel_wm_plane_visible(crtc_state, plane_state)) { - ret = skl_build_plane_wm_single(crtc_state, plane_state, - plane_id, 0); - if (ret) - return ret; - } - - return 0; -} - -static int skl_build_pipe_wm(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - const struct intel_plane_state *plane_state; - struct intel_plane *plane; - int ret, i; - - for_each_new_intel_plane_in_state(state, plane, plane_state, i) { - /* - * FIXME should perhaps check {old,new}_plane_crtc->hw.crtc - * instead but we don't populate that correctly for NV12 Y - * planes so for now hack this. - */ - if (plane->pipe != crtc->pipe) - continue; - - if (DISPLAY_VER(dev_priv) >= 11) - ret = icl_build_plane_wm(crtc_state, plane_state); - else - ret = skl_build_plane_wm(crtc_state, plane_state); - if (ret) - return ret; - } - - crtc_state->wm.skl.optimal = crtc_state->wm.skl.raw; - - return 0; -} - -static void skl_ddb_entry_write(struct drm_i915_private *dev_priv, - i915_reg_t reg, - const struct skl_ddb_entry *entry) -{ - if (entry->end) - intel_de_write_fw(dev_priv, reg, - (entry->end - 1) << 16 | entry->start); - else - intel_de_write_fw(dev_priv, reg, 0); -} - -static void skl_write_wm_level(struct drm_i915_private *dev_priv, - i915_reg_t reg, - const struct skl_wm_level *level) -{ - u32 val = 0; - - if (level->enable) - val |= PLANE_WM_EN; - if (level->ignore_lines) - val |= PLANE_WM_IGNORE_LINES; - val |= level->blocks; - val |= REG_FIELD_PREP(PLANE_WM_LINES_MASK, level->lines); - - intel_de_write_fw(dev_priv, reg, val); -} - -void skl_write_plane_wm(struct intel_plane *plane, - const struct intel_crtc_state *crtc_state) -{ - struct drm_i915_private *dev_priv = to_i915(plane->base.dev); - int level, max_level = ilk_wm_max_level(dev_priv); - enum plane_id plane_id = plane->id; - enum pipe pipe = plane->pipe; - const struct skl_pipe_wm *pipe_wm = &crtc_state->wm.skl.optimal; - const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id]; - const struct skl_ddb_entry *ddb_y = - &crtc_state->wm.skl.plane_ddb_y[plane_id]; - const struct skl_ddb_entry *ddb_uv = - &crtc_state->wm.skl.plane_ddb_uv[plane_id]; - - for (level = 0; level <= max_level; level++) - skl_write_wm_level(dev_priv, PLANE_WM(pipe, plane_id, level), - skl_plane_wm_level(pipe_wm, plane_id, level)); - - skl_write_wm_level(dev_priv, PLANE_WM_TRANS(pipe, plane_id), - skl_plane_trans_wm(pipe_wm, plane_id)); - - if (HAS_HW_SAGV_WM(dev_priv)) { - skl_write_wm_level(dev_priv, PLANE_WM_SAGV(pipe, plane_id), - &wm->sagv.wm0); - skl_write_wm_level(dev_priv, PLANE_WM_SAGV_TRANS(pipe, plane_id), - &wm->sagv.trans_wm); - } - - if (DISPLAY_VER(dev_priv) >= 11) { - skl_ddb_entry_write(dev_priv, - PLANE_BUF_CFG(pipe, plane_id), ddb_y); - return; - } - - if (wm->is_planar) - swap(ddb_y, ddb_uv); - - skl_ddb_entry_write(dev_priv, - PLANE_BUF_CFG(pipe, plane_id), ddb_y); - skl_ddb_entry_write(dev_priv, - PLANE_NV12_BUF_CFG(pipe, plane_id), ddb_uv); -} - -void skl_write_cursor_wm(struct intel_plane *plane, - const struct intel_crtc_state *crtc_state) -{ - struct drm_i915_private *dev_priv = to_i915(plane->base.dev); - int level, max_level = ilk_wm_max_level(dev_priv); - enum plane_id plane_id = plane->id; - enum pipe pipe = plane->pipe; - const struct skl_pipe_wm *pipe_wm = &crtc_state->wm.skl.optimal; - const struct skl_ddb_entry *ddb = - &crtc_state->wm.skl.plane_ddb_y[plane_id]; - - for (level = 0; level <= max_level; level++) - skl_write_wm_level(dev_priv, CUR_WM(pipe, level), - skl_plane_wm_level(pipe_wm, plane_id, level)); - - skl_write_wm_level(dev_priv, CUR_WM_TRANS(pipe), - skl_plane_trans_wm(pipe_wm, plane_id)); - - if (HAS_HW_SAGV_WM(dev_priv)) { - const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id]; - - skl_write_wm_level(dev_priv, CUR_WM_SAGV(pipe), - &wm->sagv.wm0); - skl_write_wm_level(dev_priv, CUR_WM_SAGV_TRANS(pipe), - &wm->sagv.trans_wm); - } - - skl_ddb_entry_write(dev_priv, CUR_BUF_CFG(pipe), ddb); -} - -bool skl_wm_level_equals(const struct skl_wm_level *l1, - const struct skl_wm_level *l2) -{ - return l1->enable == l2->enable && - l1->ignore_lines == l2->ignore_lines && - l1->lines == l2->lines && - l1->blocks == l2->blocks; -} - -static bool skl_plane_wm_equals(struct drm_i915_private *dev_priv, - const struct skl_plane_wm *wm1, - const struct skl_plane_wm *wm2) -{ - int level, max_level = ilk_wm_max_level(dev_priv); - - for (level = 0; level <= max_level; level++) { - /* - * We don't check uv_wm as the hardware doesn't actually - * use it. It only gets used for calculating the required - * ddb allocation. - */ - if (!skl_wm_level_equals(&wm1->wm[level], &wm2->wm[level])) - return false; - } - - return skl_wm_level_equals(&wm1->trans_wm, &wm2->trans_wm) && - skl_wm_level_equals(&wm1->sagv.wm0, &wm2->sagv.wm0) && - skl_wm_level_equals(&wm1->sagv.trans_wm, &wm2->sagv.trans_wm); -} - -static bool skl_ddb_entries_overlap(const struct skl_ddb_entry *a, - const struct skl_ddb_entry *b) -{ - return a->start < b->end && b->start < a->end; -} - -static void skl_ddb_entry_union(struct skl_ddb_entry *a, - const struct skl_ddb_entry *b) -{ - if (a->end && b->end) { - a->start = min(a->start, b->start); - a->end = max(a->end, b->end); - } else if (b->end) { - a->start = b->start; - a->end = b->end; - } -} - -bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry *ddb, - const struct skl_ddb_entry *entries, - int num_entries, int ignore_idx) -{ - int i; - - for (i = 0; i < num_entries; i++) { - if (i != ignore_idx && - skl_ddb_entries_overlap(ddb, &entries[i])) - return true; - } - - return false; -} - -static int -skl_ddb_add_affected_planes(const struct intel_crtc_state *old_crtc_state, - struct intel_crtc_state *new_crtc_state) -{ - struct intel_atomic_state *state = to_intel_atomic_state(new_crtc_state->uapi.state); - struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - struct intel_plane *plane; - - for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) { - struct intel_plane_state *plane_state; - enum plane_id plane_id = plane->id; - - if (skl_ddb_entry_equal(&old_crtc_state->wm.skl.plane_ddb_y[plane_id], - &new_crtc_state->wm.skl.plane_ddb_y[plane_id]) && - skl_ddb_entry_equal(&old_crtc_state->wm.skl.plane_ddb_uv[plane_id], - &new_crtc_state->wm.skl.plane_ddb_uv[plane_id])) - continue; - - plane_state = intel_atomic_get_plane_state(state, plane); - if (IS_ERR(plane_state)) - return PTR_ERR(plane_state); - - new_crtc_state->update_planes |= BIT(plane_id); - } - - return 0; -} - -static u8 intel_dbuf_enabled_slices(const struct intel_dbuf_state *dbuf_state) -{ - struct drm_i915_private *dev_priv = to_i915(dbuf_state->base.state->base.dev); - u8 enabled_slices; - enum pipe pipe; - - /* - * FIXME: For now we always enable slice S1 as per - * the Bspec display initialization sequence. - */ - enabled_slices = BIT(DBUF_S1); - - for_each_pipe(dev_priv, pipe) - enabled_slices |= dbuf_state->slices[pipe]; - - return enabled_slices; -} - -static int -skl_compute_ddb(struct intel_atomic_state *state) -{ - struct drm_i915_private *dev_priv = to_i915(state->base.dev); - const struct intel_dbuf_state *old_dbuf_state; - struct intel_dbuf_state *new_dbuf_state = NULL; - const struct intel_crtc_state *old_crtc_state; - struct intel_crtc_state *new_crtc_state; - struct intel_crtc *crtc; - int ret, i; - - for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { - new_dbuf_state = intel_atomic_get_dbuf_state(state); - if (IS_ERR(new_dbuf_state)) - return PTR_ERR(new_dbuf_state); - - old_dbuf_state = intel_atomic_get_old_dbuf_state(state); - break; - } - - if (!new_dbuf_state) - return 0; - - new_dbuf_state->active_pipes = - intel_calc_active_pipes(state, old_dbuf_state->active_pipes); - - if (old_dbuf_state->active_pipes != new_dbuf_state->active_pipes) { - ret = intel_atomic_lock_global_state(&new_dbuf_state->base); - if (ret) - return ret; - } - - for_each_intel_crtc(&dev_priv->drm, crtc) { - enum pipe pipe = crtc->pipe; - - new_dbuf_state->slices[pipe] = - skl_compute_dbuf_slices(crtc, new_dbuf_state->active_pipes); - - if (old_dbuf_state->slices[pipe] == new_dbuf_state->slices[pipe]) - continue; - - ret = intel_atomic_lock_global_state(&new_dbuf_state->base); - if (ret) - return ret; - } - - new_dbuf_state->enabled_slices = intel_dbuf_enabled_slices(new_dbuf_state); - - if (IS_ALDERLAKE_P(dev_priv)) - new_dbuf_state->joined_mbus = adlp_check_mbus_joined(new_dbuf_state->active_pipes); - - if (old_dbuf_state->enabled_slices != new_dbuf_state->enabled_slices || - old_dbuf_state->joined_mbus != new_dbuf_state->joined_mbus) { - ret = intel_atomic_serialize_global_state(&new_dbuf_state->base); - if (ret) - return ret; - - if (old_dbuf_state->joined_mbus != new_dbuf_state->joined_mbus) { - /* TODO: Implement vblank synchronized MBUS joining changes */ - ret = intel_modeset_all_pipes(state); - if (ret) - return ret; - } - - drm_dbg_kms(&dev_priv->drm, - "Enabled dbuf slices 0x%x -> 0x%x (total dbuf slices 0x%x), mbus joined? %s->%s\n", - old_dbuf_state->enabled_slices, - new_dbuf_state->enabled_slices, - INTEL_INFO(dev_priv)->dbuf.slice_mask, - yesno(old_dbuf_state->joined_mbus), - yesno(new_dbuf_state->joined_mbus)); - } - - for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { - enum pipe pipe = crtc->pipe; - - new_dbuf_state->weight[pipe] = intel_crtc_ddb_weight(new_crtc_state); - - if (old_dbuf_state->weight[pipe] == new_dbuf_state->weight[pipe]) - continue; - - ret = intel_atomic_lock_global_state(&new_dbuf_state->base); - if (ret) - return ret; - } - - for_each_intel_crtc(&dev_priv->drm, crtc) { - ret = skl_crtc_allocate_ddb(state, crtc); - if (ret) - return ret; - } - - for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, - new_crtc_state, i) { - ret = skl_allocate_plane_ddb(state, crtc); - if (ret) - return ret; - - ret = skl_ddb_add_affected_planes(old_crtc_state, - new_crtc_state); - if (ret) - return ret; - } - - return 0; -} - -static char enast(bool enable) -{ - return enable ? '*' : ' '; -} - -static void -skl_print_wm_changes(struct intel_atomic_state *state) -{ - struct drm_i915_private *dev_priv = to_i915(state->base.dev); - const struct intel_crtc_state *old_crtc_state; - const struct intel_crtc_state *new_crtc_state; - struct intel_plane *plane; - struct intel_crtc *crtc; - int i; - - if (!drm_debug_enabled(DRM_UT_KMS)) - return; - - for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, - new_crtc_state, i) { - const struct skl_pipe_wm *old_pipe_wm, *new_pipe_wm; - - old_pipe_wm = &old_crtc_state->wm.skl.optimal; - new_pipe_wm = &new_crtc_state->wm.skl.optimal; - - for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) { - enum plane_id plane_id = plane->id; - const struct skl_ddb_entry *old, *new; - - old = &old_crtc_state->wm.skl.plane_ddb_y[plane_id]; - new = &new_crtc_state->wm.skl.plane_ddb_y[plane_id]; - - if (skl_ddb_entry_equal(old, new)) - continue; - - drm_dbg_kms(&dev_priv->drm, - "[PLANE:%d:%s] ddb (%4d - %4d) -> (%4d - %4d), size %4d -> %4d\n", - plane->base.base.id, plane->base.name, - old->start, old->end, new->start, new->end, - skl_ddb_entry_size(old), skl_ddb_entry_size(new)); - } - - for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) { - enum plane_id plane_id = plane->id; - const struct skl_plane_wm *old_wm, *new_wm; - - old_wm = &old_pipe_wm->planes[plane_id]; - new_wm = &new_pipe_wm->planes[plane_id]; - - if (skl_plane_wm_equals(dev_priv, old_wm, new_wm)) - continue; - - drm_dbg_kms(&dev_priv->drm, - "[PLANE:%d:%s] level %cwm0,%cwm1,%cwm2,%cwm3,%cwm4,%cwm5,%cwm6,%cwm7,%ctwm,%cswm,%cstwm" - " -> %cwm0,%cwm1,%cwm2,%cwm3,%cwm4,%cwm5,%cwm6,%cwm7,%ctwm,%cswm,%cstwm\n", - plane->base.base.id, plane->base.name, - enast(old_wm->wm[0].enable), enast(old_wm->wm[1].enable), - enast(old_wm->wm[2].enable), enast(old_wm->wm[3].enable), - enast(old_wm->wm[4].enable), enast(old_wm->wm[5].enable), - enast(old_wm->wm[6].enable), enast(old_wm->wm[7].enable), - enast(old_wm->trans_wm.enable), - enast(old_wm->sagv.wm0.enable), - enast(old_wm->sagv.trans_wm.enable), - enast(new_wm->wm[0].enable), enast(new_wm->wm[1].enable), - enast(new_wm->wm[2].enable), enast(new_wm->wm[3].enable), - enast(new_wm->wm[4].enable), enast(new_wm->wm[5].enable), - enast(new_wm->wm[6].enable), enast(new_wm->wm[7].enable), - enast(new_wm->trans_wm.enable), - enast(new_wm->sagv.wm0.enable), - enast(new_wm->sagv.trans_wm.enable)); - - drm_dbg_kms(&dev_priv->drm, - "[PLANE:%d:%s] lines %c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%4d" - " -> %c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%4d\n", - plane->base.base.id, plane->base.name, - enast(old_wm->wm[0].ignore_lines), old_wm->wm[0].lines, - enast(old_wm->wm[1].ignore_lines), old_wm->wm[1].lines, - enast(old_wm->wm[2].ignore_lines), old_wm->wm[2].lines, - enast(old_wm->wm[3].ignore_lines), old_wm->wm[3].lines, - enast(old_wm->wm[4].ignore_lines), old_wm->wm[4].lines, - enast(old_wm->wm[5].ignore_lines), old_wm->wm[5].lines, - enast(old_wm->wm[6].ignore_lines), old_wm->wm[6].lines, - enast(old_wm->wm[7].ignore_lines), old_wm->wm[7].lines, - enast(old_wm->trans_wm.ignore_lines), old_wm->trans_wm.lines, - enast(old_wm->sagv.wm0.ignore_lines), old_wm->sagv.wm0.lines, - enast(old_wm->sagv.trans_wm.ignore_lines), old_wm->sagv.trans_wm.lines, - enast(new_wm->wm[0].ignore_lines), new_wm->wm[0].lines, - enast(new_wm->wm[1].ignore_lines), new_wm->wm[1].lines, - enast(new_wm->wm[2].ignore_lines), new_wm->wm[2].lines, - enast(new_wm->wm[3].ignore_lines), new_wm->wm[3].lines, - enast(new_wm->wm[4].ignore_lines), new_wm->wm[4].lines, - enast(new_wm->wm[5].ignore_lines), new_wm->wm[5].lines, - enast(new_wm->wm[6].ignore_lines), new_wm->wm[6].lines, - enast(new_wm->wm[7].ignore_lines), new_wm->wm[7].lines, - enast(new_wm->trans_wm.ignore_lines), new_wm->trans_wm.lines, - enast(new_wm->sagv.wm0.ignore_lines), new_wm->sagv.wm0.lines, - enast(new_wm->sagv.trans_wm.ignore_lines), new_wm->sagv.trans_wm.lines); - - drm_dbg_kms(&dev_priv->drm, - "[PLANE:%d:%s] blocks %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d" - " -> %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d\n", - plane->base.base.id, plane->base.name, - old_wm->wm[0].blocks, old_wm->wm[1].blocks, - old_wm->wm[2].blocks, old_wm->wm[3].blocks, - old_wm->wm[4].blocks, old_wm->wm[5].blocks, - old_wm->wm[6].blocks, old_wm->wm[7].blocks, - old_wm->trans_wm.blocks, - old_wm->sagv.wm0.blocks, - old_wm->sagv.trans_wm.blocks, - new_wm->wm[0].blocks, new_wm->wm[1].blocks, - new_wm->wm[2].blocks, new_wm->wm[3].blocks, - new_wm->wm[4].blocks, new_wm->wm[5].blocks, - new_wm->wm[6].blocks, new_wm->wm[7].blocks, - new_wm->trans_wm.blocks, - new_wm->sagv.wm0.blocks, - new_wm->sagv.trans_wm.blocks); - - drm_dbg_kms(&dev_priv->drm, - "[PLANE:%d:%s] min_ddb %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d" - " -> %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d\n", - plane->base.base.id, plane->base.name, - old_wm->wm[0].min_ddb_alloc, old_wm->wm[1].min_ddb_alloc, - old_wm->wm[2].min_ddb_alloc, old_wm->wm[3].min_ddb_alloc, - old_wm->wm[4].min_ddb_alloc, old_wm->wm[5].min_ddb_alloc, - old_wm->wm[6].min_ddb_alloc, old_wm->wm[7].min_ddb_alloc, - old_wm->trans_wm.min_ddb_alloc, - old_wm->sagv.wm0.min_ddb_alloc, - old_wm->sagv.trans_wm.min_ddb_alloc, - new_wm->wm[0].min_ddb_alloc, new_wm->wm[1].min_ddb_alloc, - new_wm->wm[2].min_ddb_alloc, new_wm->wm[3].min_ddb_alloc, - new_wm->wm[4].min_ddb_alloc, new_wm->wm[5].min_ddb_alloc, - new_wm->wm[6].min_ddb_alloc, new_wm->wm[7].min_ddb_alloc, - new_wm->trans_wm.min_ddb_alloc, - new_wm->sagv.wm0.min_ddb_alloc, - new_wm->sagv.trans_wm.min_ddb_alloc); - } - } -} - -static bool skl_plane_selected_wm_equals(struct intel_plane *plane, - const struct skl_pipe_wm *old_pipe_wm, - const struct skl_pipe_wm *new_pipe_wm) -{ - struct drm_i915_private *i915 = to_i915(plane->base.dev); - int level, max_level = ilk_wm_max_level(i915); - - for (level = 0; level <= max_level; level++) { - /* - * We don't check uv_wm as the hardware doesn't actually - * use it. It only gets used for calculating the required - * ddb allocation. - */ - if (!skl_wm_level_equals(skl_plane_wm_level(old_pipe_wm, plane->id, level), - skl_plane_wm_level(new_pipe_wm, plane->id, level))) - return false; - } - - if (HAS_HW_SAGV_WM(i915)) { - const struct skl_plane_wm *old_wm = &old_pipe_wm->planes[plane->id]; - const struct skl_plane_wm *new_wm = &new_pipe_wm->planes[plane->id]; - - if (!skl_wm_level_equals(&old_wm->sagv.wm0, &new_wm->sagv.wm0) || - !skl_wm_level_equals(&old_wm->sagv.trans_wm, &new_wm->sagv.trans_wm)) - return false; - } - - return skl_wm_level_equals(skl_plane_trans_wm(old_pipe_wm, plane->id), - skl_plane_trans_wm(new_pipe_wm, plane->id)); -} - -/* - * To make sure the cursor watermark registers are always consistent - * with our computed state the following scenario needs special - * treatment: - * - * 1. enable cursor - * 2. move cursor entirely offscreen - * 3. disable cursor - * - * Step 2. does call .disable_plane() but does not zero the watermarks - * (since we consider an offscreen cursor still active for the purposes - * of watermarks). Step 3. would not normally call .disable_plane() - * because the actual plane visibility isn't changing, and we don't - * deallocate the cursor ddb until the pipe gets disabled. So we must - * force step 3. to call .disable_plane() to update the watermark - * registers properly. - * - * Other planes do not suffer from this issues as their watermarks are - * calculated based on the actual plane visibility. The only time this - * can trigger for the other planes is during the initial readout as the - * default value of the watermarks registers is not zero. - */ -static int skl_wm_add_affected_planes(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - const struct intel_crtc_state *old_crtc_state = - intel_atomic_get_old_crtc_state(state, crtc); - struct intel_crtc_state *new_crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - struct intel_plane *plane; - - for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) { - struct intel_plane_state *plane_state; - enum plane_id plane_id = plane->id; - - /* - * Force a full wm update for every plane on modeset. - * Required because the reset value of the wm registers - * is non-zero, whereas we want all disabled planes to - * have zero watermarks. So if we turn off the relevant - * power well the hardware state will go out of sync - * with the software state. - */ - if (!drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi) && - skl_plane_selected_wm_equals(plane, - &old_crtc_state->wm.skl.optimal, - &new_crtc_state->wm.skl.optimal)) - continue; - - plane_state = intel_atomic_get_plane_state(state, plane); - if (IS_ERR(plane_state)) - return PTR_ERR(plane_state); - - new_crtc_state->update_planes |= BIT(plane_id); - } - - return 0; -} - -static int -skl_compute_wm(struct intel_atomic_state *state) -{ - struct intel_crtc *crtc; - struct intel_crtc_state *new_crtc_state; - int ret, i; - - for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { - ret = skl_build_pipe_wm(state, crtc); - if (ret) - return ret; - } - - ret = skl_compute_ddb(state); - if (ret) - return ret; - - ret = intel_compute_sagv_mask(state); - if (ret) - return ret; - - /* - * skl_compute_ddb() will have adjusted the final watermarks - * based on how much ddb is available. Now we can actually - * check if the final watermarks changed. - */ - for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { - ret = skl_wm_add_affected_planes(state, crtc); - if (ret) - return ret; - } - - skl_print_wm_changes(state); - - return 0; -} - -static void ilk_compute_wm_config(struct drm_i915_private *dev_priv, - struct intel_wm_config *config) -{ - struct intel_crtc *crtc; - - /* Compute the currently _active_ config */ - for_each_intel_crtc(&dev_priv->drm, crtc) { - const struct intel_pipe_wm *wm = &crtc->wm.active.ilk; - - if (!wm->pipe_enabled) - continue; - - config->sprites_enabled |= wm->sprites_enabled; - config->sprites_scaled |= wm->sprites_scaled; - config->num_pipes_active++; - } -} - -static void ilk_program_watermarks(struct drm_i915_private *dev_priv) -{ - struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm; - struct ilk_wm_maximums max; - struct intel_wm_config config = {}; - struct ilk_wm_values results = {}; - enum intel_ddb_partitioning partitioning; - - ilk_compute_wm_config(dev_priv, &config); - - ilk_compute_wm_maximums(dev_priv, 1, &config, INTEL_DDB_PART_1_2, &max); - ilk_wm_merge(dev_priv, &config, &max, &lp_wm_1_2); - - /* 5/6 split only in single pipe config on IVB+ */ - if (DISPLAY_VER(dev_priv) >= 7 && - config.num_pipes_active == 1 && config.sprites_enabled) { - ilk_compute_wm_maximums(dev_priv, 1, &config, INTEL_DDB_PART_5_6, &max); - ilk_wm_merge(dev_priv, &config, &max, &lp_wm_5_6); - - best_lp_wm = ilk_find_best_result(dev_priv, &lp_wm_1_2, &lp_wm_5_6); - } else { - best_lp_wm = &lp_wm_1_2; - } - - partitioning = (best_lp_wm == &lp_wm_1_2) ? - INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6; - - ilk_compute_wm_results(dev_priv, best_lp_wm, partitioning, &results); - - ilk_write_wm_values(dev_priv, &results); -} - -static void ilk_initial_watermarks(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - const struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - - mutex_lock(&dev_priv->wm.wm_mutex); - crtc->wm.active.ilk = crtc_state->wm.ilk.intermediate; - ilk_program_watermarks(dev_priv); - mutex_unlock(&dev_priv->wm.wm_mutex); -} - -static void ilk_optimize_watermarks(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - const struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - - if (!crtc_state->wm.need_postvbl_update) - return; - - mutex_lock(&dev_priv->wm.wm_mutex); - crtc->wm.active.ilk = crtc_state->wm.ilk.optimal; - ilk_program_watermarks(dev_priv); - mutex_unlock(&dev_priv->wm.wm_mutex); -} - -static void skl_wm_level_from_reg_val(u32 val, struct skl_wm_level *level) -{ - level->enable = val & PLANE_WM_EN; - level->ignore_lines = val & PLANE_WM_IGNORE_LINES; - level->blocks = val & PLANE_WM_BLOCKS_MASK; - level->lines = REG_FIELD_GET(PLANE_WM_LINES_MASK, val); -} - -void skl_pipe_wm_get_hw_state(struct intel_crtc *crtc, - struct skl_pipe_wm *out) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - enum pipe pipe = crtc->pipe; - int level, max_level; - enum plane_id plane_id; - u32 val; - - max_level = ilk_wm_max_level(dev_priv); - - for_each_plane_id_on_crtc(crtc, plane_id) { - struct skl_plane_wm *wm = &out->planes[plane_id]; - - for (level = 0; level <= max_level; level++) { - if (plane_id != PLANE_CURSOR) - val = intel_uncore_read(&dev_priv->uncore, PLANE_WM(pipe, plane_id, level)); - else - val = intel_uncore_read(&dev_priv->uncore, CUR_WM(pipe, level)); - - skl_wm_level_from_reg_val(val, &wm->wm[level]); - } - - if (plane_id != PLANE_CURSOR) - val = intel_uncore_read(&dev_priv->uncore, PLANE_WM_TRANS(pipe, plane_id)); - else - val = intel_uncore_read(&dev_priv->uncore, CUR_WM_TRANS(pipe)); - - skl_wm_level_from_reg_val(val, &wm->trans_wm); - - if (HAS_HW_SAGV_WM(dev_priv)) { - if (plane_id != PLANE_CURSOR) - val = intel_uncore_read(&dev_priv->uncore, - PLANE_WM_SAGV(pipe, plane_id)); - else - val = intel_uncore_read(&dev_priv->uncore, - CUR_WM_SAGV(pipe)); - - skl_wm_level_from_reg_val(val, &wm->sagv.wm0); - - if (plane_id != PLANE_CURSOR) - val = intel_uncore_read(&dev_priv->uncore, - PLANE_WM_SAGV_TRANS(pipe, plane_id)); - else - val = intel_uncore_read(&dev_priv->uncore, - CUR_WM_SAGV_TRANS(pipe)); - - skl_wm_level_from_reg_val(val, &wm->sagv.trans_wm); - } else if (DISPLAY_VER(dev_priv) >= 12) { - wm->sagv.wm0 = wm->wm[0]; - wm->sagv.trans_wm = wm->trans_wm; - } - } -} - -void skl_wm_get_hw_state(struct drm_i915_private *dev_priv) -{ - struct intel_dbuf_state *dbuf_state = - to_intel_dbuf_state(dev_priv->dbuf.obj.state); - struct intel_crtc *crtc; - - if (IS_ALDERLAKE_P(dev_priv)) - dbuf_state->joined_mbus = intel_de_read(dev_priv, MBUS_CTL) & MBUS_JOIN; - - for_each_intel_crtc(&dev_priv->drm, crtc) { - struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); - enum pipe pipe = crtc->pipe; - unsigned int mbus_offset; - enum plane_id plane_id; - - skl_pipe_wm_get_hw_state(crtc, &crtc_state->wm.skl.optimal); - crtc_state->wm.skl.raw = crtc_state->wm.skl.optimal; - - memset(&dbuf_state->ddb[pipe], 0, sizeof(dbuf_state->ddb[pipe])); - - for_each_plane_id_on_crtc(crtc, plane_id) { - struct skl_ddb_entry *ddb_y = - &crtc_state->wm.skl.plane_ddb_y[plane_id]; - struct skl_ddb_entry *ddb_uv = - &crtc_state->wm.skl.plane_ddb_uv[plane_id]; - - skl_ddb_get_hw_plane_state(dev_priv, crtc->pipe, - plane_id, ddb_y, ddb_uv); - - skl_ddb_entry_union(&dbuf_state->ddb[pipe], ddb_y); - skl_ddb_entry_union(&dbuf_state->ddb[pipe], ddb_uv); - } - - dbuf_state->slices[pipe] = - skl_compute_dbuf_slices(crtc, dbuf_state->active_pipes); - - dbuf_state->weight[pipe] = intel_crtc_ddb_weight(crtc_state); - - /* - * Used for checking overlaps, so we need absolute - * offsets instead of MBUS relative offsets. - */ - mbus_offset = mbus_ddb_offset(dev_priv, dbuf_state->slices[pipe]); - crtc_state->wm.skl.ddb.start = mbus_offset + dbuf_state->ddb[pipe].start; - crtc_state->wm.skl.ddb.end = mbus_offset + dbuf_state->ddb[pipe].end; - - drm_dbg_kms(&dev_priv->drm, - "[CRTC:%d:%s] dbuf slices 0x%x, ddb (%d - %d), active pipes 0x%x, mbus joined: %s\n", - crtc->base.base.id, crtc->base.name, - dbuf_state->slices[pipe], dbuf_state->ddb[pipe].start, - dbuf_state->ddb[pipe].end, dbuf_state->active_pipes, - yesno(dbuf_state->joined_mbus)); - } - - dbuf_state->enabled_slices = dev_priv->dbuf.enabled_slices; -} - -static void ilk_pipe_wm_get_hw_state(struct intel_crtc *crtc) -{ - struct drm_device *dev = crtc->base.dev; - struct drm_i915_private *dev_priv = to_i915(dev); - struct ilk_wm_values *hw = &dev_priv->wm.hw; - struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state); - struct intel_pipe_wm *active = &crtc_state->wm.ilk.optimal; - enum pipe pipe = crtc->pipe; - - hw->wm_pipe[pipe] = intel_uncore_read(&dev_priv->uncore, WM0_PIPE_ILK(pipe)); - - memset(active, 0, sizeof(*active)); - - active->pipe_enabled = crtc->active; - - if (active->pipe_enabled) { - u32 tmp = hw->wm_pipe[pipe]; - - /* - * For active pipes LP0 watermark is marked as - * enabled, and LP1+ watermaks as disabled since - * we can't really reverse compute them in case - * multiple pipes are active. - */ - active->wm[0].enable = true; - active->wm[0].pri_val = (tmp & WM0_PIPE_PLANE_MASK) >> WM0_PIPE_PLANE_SHIFT; - active->wm[0].spr_val = (tmp & WM0_PIPE_SPRITE_MASK) >> WM0_PIPE_SPRITE_SHIFT; - active->wm[0].cur_val = tmp & WM0_PIPE_CURSOR_MASK; - } else { - int level, max_level = ilk_wm_max_level(dev_priv); - - /* - * For inactive pipes, all watermark levels - * should be marked as enabled but zeroed, - * which is what we'd compute them to. - */ - for (level = 0; level <= max_level; level++) - active->wm[level].enable = true; - } - - crtc->wm.active.ilk = *active; -} - -#define _FW_WM(value, plane) \ - (((value) & DSPFW_ ## plane ## _MASK) >> DSPFW_ ## plane ## _SHIFT) -#define _FW_WM_VLV(value, plane) \ - (((value) & DSPFW_ ## plane ## _MASK_VLV) >> DSPFW_ ## plane ## _SHIFT) - -static void g4x_read_wm_values(struct drm_i915_private *dev_priv, - struct g4x_wm_values *wm) -{ - u32 tmp; - - tmp = intel_uncore_read(&dev_priv->uncore, DSPFW1); - wm->sr.plane = _FW_WM(tmp, SR); - wm->pipe[PIPE_B].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORB); - wm->pipe[PIPE_B].plane[PLANE_PRIMARY] = _FW_WM(tmp, PLANEB); - wm->pipe[PIPE_A].plane[PLANE_PRIMARY] = _FW_WM(tmp, PLANEA); - - tmp = intel_uncore_read(&dev_priv->uncore, DSPFW2); - wm->fbc_en = tmp & DSPFW_FBC_SR_EN; - wm->sr.fbc = _FW_WM(tmp, FBC_SR); - wm->hpll.fbc = _FW_WM(tmp, FBC_HPLL_SR); - wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM(tmp, SPRITEB); - wm->pipe[PIPE_A].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORA); - wm->pipe[PIPE_A].plane[PLANE_SPRITE0] = _FW_WM(tmp, SPRITEA); - - tmp = intel_uncore_read(&dev_priv->uncore, DSPFW3); - wm->hpll_en = tmp & DSPFW_HPLL_SR_EN; - wm->sr.cursor = _FW_WM(tmp, CURSOR_SR); - wm->hpll.cursor = _FW_WM(tmp, HPLL_CURSOR); - wm->hpll.plane = _FW_WM(tmp, HPLL_SR); -} - -static void vlv_read_wm_values(struct drm_i915_private *dev_priv, - struct vlv_wm_values *wm) -{ - enum pipe pipe; - u32 tmp; - - for_each_pipe(dev_priv, pipe) { - tmp = intel_uncore_read(&dev_priv->uncore, VLV_DDL(pipe)); - - wm->ddl[pipe].plane[PLANE_PRIMARY] = - (tmp >> DDL_PLANE_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); - wm->ddl[pipe].plane[PLANE_CURSOR] = - (tmp >> DDL_CURSOR_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); - wm->ddl[pipe].plane[PLANE_SPRITE0] = - (tmp >> DDL_SPRITE_SHIFT(0)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); - wm->ddl[pipe].plane[PLANE_SPRITE1] = - (tmp >> DDL_SPRITE_SHIFT(1)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); - } - - tmp = intel_uncore_read(&dev_priv->uncore, DSPFW1); - wm->sr.plane = _FW_WM(tmp, SR); - wm->pipe[PIPE_B].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORB); - wm->pipe[PIPE_B].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEB); - wm->pipe[PIPE_A].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEA); - - tmp = intel_uncore_read(&dev_priv->uncore, DSPFW2); - wm->pipe[PIPE_A].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITEB); - wm->pipe[PIPE_A].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORA); - wm->pipe[PIPE_A].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEA); - - tmp = intel_uncore_read(&dev_priv->uncore, DSPFW3); - wm->sr.cursor = _FW_WM(tmp, CURSOR_SR); - - if (IS_CHERRYVIEW(dev_priv)) { - tmp = intel_uncore_read(&dev_priv->uncore, DSPFW7_CHV); - wm->pipe[PIPE_B].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITED); - wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEC); - - tmp = intel_uncore_read(&dev_priv->uncore, DSPFW8_CHV); - wm->pipe[PIPE_C].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITEF); - wm->pipe[PIPE_C].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEE); - - tmp = intel_uncore_read(&dev_priv->uncore, DSPFW9_CHV); - wm->pipe[PIPE_C].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEC); - wm->pipe[PIPE_C].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORC); - - tmp = intel_uncore_read(&dev_priv->uncore, DSPHOWM); - wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9; - wm->pipe[PIPE_C].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITEF_HI) << 8; - wm->pipe[PIPE_C].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEE_HI) << 8; - wm->pipe[PIPE_C].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEC_HI) << 8; - wm->pipe[PIPE_B].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITED_HI) << 8; - wm->pipe[PIPE_B].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEC_HI) << 8; - wm->pipe[PIPE_B].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEB_HI) << 8; - wm->pipe[PIPE_A].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITEB_HI) << 8; - wm->pipe[PIPE_A].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEA_HI) << 8; - wm->pipe[PIPE_A].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEA_HI) << 8; - } else { - tmp = intel_uncore_read(&dev_priv->uncore, DSPFW7); - wm->pipe[PIPE_B].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITED); - wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEC); - - tmp = intel_uncore_read(&dev_priv->uncore, DSPHOWM); - wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9; - wm->pipe[PIPE_B].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITED_HI) << 8; - wm->pipe[PIPE_B].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEC_HI) << 8; - wm->pipe[PIPE_B].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEB_HI) << 8; - wm->pipe[PIPE_A].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITEB_HI) << 8; - wm->pipe[PIPE_A].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEA_HI) << 8; - wm->pipe[PIPE_A].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEA_HI) << 8; - } -} - -#undef _FW_WM -#undef _FW_WM_VLV - -void g4x_wm_get_hw_state(struct drm_i915_private *dev_priv) -{ - struct g4x_wm_values *wm = &dev_priv->wm.g4x; - struct intel_crtc *crtc; - - g4x_read_wm_values(dev_priv, wm); - - wm->cxsr = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF) & FW_BLC_SELF_EN; - - for_each_intel_crtc(&dev_priv->drm, crtc) { - struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); - struct g4x_wm_state *active = &crtc->wm.active.g4x; - struct g4x_pipe_wm *raw; - enum pipe pipe = crtc->pipe; - enum plane_id plane_id; - int level, max_level; - - active->cxsr = wm->cxsr; - active->hpll_en = wm->hpll_en; - active->fbc_en = wm->fbc_en; - - active->sr = wm->sr; - active->hpll = wm->hpll; - - for_each_plane_id_on_crtc(crtc, plane_id) { - active->wm.plane[plane_id] = - wm->pipe[pipe].plane[plane_id]; - } - - if (wm->cxsr && wm->hpll_en) - max_level = G4X_WM_LEVEL_HPLL; - else if (wm->cxsr) - max_level = G4X_WM_LEVEL_SR; - else - max_level = G4X_WM_LEVEL_NORMAL; - - level = G4X_WM_LEVEL_NORMAL; - raw = &crtc_state->wm.g4x.raw[level]; - for_each_plane_id_on_crtc(crtc, plane_id) - raw->plane[plane_id] = active->wm.plane[plane_id]; - - if (++level > max_level) - goto out; - - raw = &crtc_state->wm.g4x.raw[level]; - raw->plane[PLANE_PRIMARY] = active->sr.plane; - raw->plane[PLANE_CURSOR] = active->sr.cursor; - raw->plane[PLANE_SPRITE0] = 0; - raw->fbc = active->sr.fbc; - - if (++level > max_level) - goto out; - - raw = &crtc_state->wm.g4x.raw[level]; - raw->plane[PLANE_PRIMARY] = active->hpll.plane; - raw->plane[PLANE_CURSOR] = active->hpll.cursor; - raw->plane[PLANE_SPRITE0] = 0; - raw->fbc = active->hpll.fbc; - - out: - for_each_plane_id_on_crtc(crtc, plane_id) - g4x_raw_plane_wm_set(crtc_state, level, - plane_id, USHRT_MAX); - g4x_raw_fbc_wm_set(crtc_state, level, USHRT_MAX); - - crtc_state->wm.g4x.optimal = *active; - crtc_state->wm.g4x.intermediate = *active; - - drm_dbg_kms(&dev_priv->drm, - "Initial watermarks: pipe %c, plane=%d, cursor=%d, sprite=%d\n", - pipe_name(pipe), - wm->pipe[pipe].plane[PLANE_PRIMARY], - wm->pipe[pipe].plane[PLANE_CURSOR], - wm->pipe[pipe].plane[PLANE_SPRITE0]); - } - - drm_dbg_kms(&dev_priv->drm, - "Initial SR watermarks: plane=%d, cursor=%d fbc=%d\n", - wm->sr.plane, wm->sr.cursor, wm->sr.fbc); - drm_dbg_kms(&dev_priv->drm, - "Initial HPLL watermarks: plane=%d, SR cursor=%d fbc=%d\n", - wm->hpll.plane, wm->hpll.cursor, wm->hpll.fbc); - drm_dbg_kms(&dev_priv->drm, "Initial SR=%s HPLL=%s FBC=%s\n", - yesno(wm->cxsr), yesno(wm->hpll_en), yesno(wm->fbc_en)); -} - -void g4x_wm_sanitize(struct drm_i915_private *dev_priv) -{ - struct intel_plane *plane; - struct intel_crtc *crtc; - - mutex_lock(&dev_priv->wm.wm_mutex); - - for_each_intel_plane(&dev_priv->drm, plane) { - struct intel_crtc *crtc = - intel_get_crtc_for_pipe(dev_priv, plane->pipe); - struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); - struct intel_plane_state *plane_state = - to_intel_plane_state(plane->base.state); - struct g4x_wm_state *wm_state = &crtc_state->wm.g4x.optimal; - enum plane_id plane_id = plane->id; - int level; - - if (plane_state->uapi.visible) - continue; - - for (level = 0; level < 3; level++) { - struct g4x_pipe_wm *raw = - &crtc_state->wm.g4x.raw[level]; - - raw->plane[plane_id] = 0; - wm_state->wm.plane[plane_id] = 0; - } - - if (plane_id == PLANE_PRIMARY) { - for (level = 0; level < 3; level++) { - struct g4x_pipe_wm *raw = - &crtc_state->wm.g4x.raw[level]; - raw->fbc = 0; - } - - wm_state->sr.fbc = 0; - wm_state->hpll.fbc = 0; - wm_state->fbc_en = false; - } - } - - for_each_intel_crtc(&dev_priv->drm, crtc) { - struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); - - crtc_state->wm.g4x.intermediate = - crtc_state->wm.g4x.optimal; - crtc->wm.active.g4x = crtc_state->wm.g4x.optimal; - } - - g4x_program_watermarks(dev_priv); - - mutex_unlock(&dev_priv->wm.wm_mutex); -} - -void vlv_wm_get_hw_state(struct drm_i915_private *dev_priv) -{ - struct vlv_wm_values *wm = &dev_priv->wm.vlv; - struct intel_crtc *crtc; - u32 val; - - vlv_read_wm_values(dev_priv, wm); - - wm->cxsr = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF_VLV) & FW_CSPWRDWNEN; - wm->level = VLV_WM_LEVEL_PM2; - - if (IS_CHERRYVIEW(dev_priv)) { - vlv_punit_get(dev_priv); - - val = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM); - if (val & DSP_MAXFIFO_PM5_ENABLE) - wm->level = VLV_WM_LEVEL_PM5; - - /* - * If DDR DVFS is disabled in the BIOS, Punit - * will never ack the request. So if that happens - * assume we don't have to enable/disable DDR DVFS - * dynamically. To test that just set the REQ_ACK - * bit to poke the Punit, but don't change the - * HIGH/LOW bits so that we don't actually change - * the current state. - */ - val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); - val |= FORCE_DDR_FREQ_REQ_ACK; - vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val); - - if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) & - FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) { - drm_dbg_kms(&dev_priv->drm, - "Punit not acking DDR DVFS request, " - "assuming DDR DVFS is disabled\n"); - dev_priv->wm.max_level = VLV_WM_LEVEL_PM5; - } else { - val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); - if ((val & FORCE_DDR_HIGH_FREQ) == 0) - wm->level = VLV_WM_LEVEL_DDR_DVFS; - } - - vlv_punit_put(dev_priv); - } - - for_each_intel_crtc(&dev_priv->drm, crtc) { - struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); - struct vlv_wm_state *active = &crtc->wm.active.vlv; - const struct vlv_fifo_state *fifo_state = - &crtc_state->wm.vlv.fifo_state; - enum pipe pipe = crtc->pipe; - enum plane_id plane_id; - int level; - - vlv_get_fifo_size(crtc_state); - - active->num_levels = wm->level + 1; - active->cxsr = wm->cxsr; - - for (level = 0; level < active->num_levels; level++) { - struct g4x_pipe_wm *raw = - &crtc_state->wm.vlv.raw[level]; - - active->sr[level].plane = wm->sr.plane; - active->sr[level].cursor = wm->sr.cursor; - - for_each_plane_id_on_crtc(crtc, plane_id) { - active->wm[level].plane[plane_id] = - wm->pipe[pipe].plane[plane_id]; - - raw->plane[plane_id] = - vlv_invert_wm_value(active->wm[level].plane[plane_id], - fifo_state->plane[plane_id]); - } - } - - for_each_plane_id_on_crtc(crtc, plane_id) - vlv_raw_plane_wm_set(crtc_state, level, - plane_id, USHRT_MAX); - vlv_invalidate_wms(crtc, active, level); - - crtc_state->wm.vlv.optimal = *active; - crtc_state->wm.vlv.intermediate = *active; - - drm_dbg_kms(&dev_priv->drm, - "Initial watermarks: pipe %c, plane=%d, cursor=%d, sprite0=%d, sprite1=%d\n", - pipe_name(pipe), - wm->pipe[pipe].plane[PLANE_PRIMARY], - wm->pipe[pipe].plane[PLANE_CURSOR], - wm->pipe[pipe].plane[PLANE_SPRITE0], - wm->pipe[pipe].plane[PLANE_SPRITE1]); - } - - drm_dbg_kms(&dev_priv->drm, - "Initial watermarks: SR plane=%d, SR cursor=%d level=%d cxsr=%d\n", - wm->sr.plane, wm->sr.cursor, wm->level, wm->cxsr); -} - -void vlv_wm_sanitize(struct drm_i915_private *dev_priv) -{ - struct intel_plane *plane; - struct intel_crtc *crtc; - - mutex_lock(&dev_priv->wm.wm_mutex); - - for_each_intel_plane(&dev_priv->drm, plane) { - struct intel_crtc *crtc = - intel_get_crtc_for_pipe(dev_priv, plane->pipe); - struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); - struct intel_plane_state *plane_state = - to_intel_plane_state(plane->base.state); - struct vlv_wm_state *wm_state = &crtc_state->wm.vlv.optimal; - const struct vlv_fifo_state *fifo_state = - &crtc_state->wm.vlv.fifo_state; - enum plane_id plane_id = plane->id; - int level; - - if (plane_state->uapi.visible) - continue; - - for (level = 0; level < wm_state->num_levels; level++) { - struct g4x_pipe_wm *raw = - &crtc_state->wm.vlv.raw[level]; - - raw->plane[plane_id] = 0; - - wm_state->wm[level].plane[plane_id] = - vlv_invert_wm_value(raw->plane[plane_id], - fifo_state->plane[plane_id]); - } - } - - for_each_intel_crtc(&dev_priv->drm, crtc) { - struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); - - crtc_state->wm.vlv.intermediate = - crtc_state->wm.vlv.optimal; - crtc->wm.active.vlv = crtc_state->wm.vlv.optimal; - } - - vlv_program_watermarks(dev_priv); - - mutex_unlock(&dev_priv->wm.wm_mutex); -} - -/* - * FIXME should probably kill this and improve - * the real watermark readout/sanitation instead - */ -static void ilk_init_lp_watermarks(struct drm_i915_private *dev_priv) -{ - intel_uncore_write(&dev_priv->uncore, WM3_LP_ILK, intel_uncore_read(&dev_priv->uncore, WM3_LP_ILK) & ~WM1_LP_SR_EN); - intel_uncore_write(&dev_priv->uncore, WM2_LP_ILK, intel_uncore_read(&dev_priv->uncore, WM2_LP_ILK) & ~WM1_LP_SR_EN); - intel_uncore_write(&dev_priv->uncore, WM1_LP_ILK, intel_uncore_read(&dev_priv->uncore, WM1_LP_ILK) & ~WM1_LP_SR_EN); - - /* - * Don't touch WM1S_LP_EN here. - * Doing so could cause underruns. - */ -} - -void ilk_wm_get_hw_state(struct drm_i915_private *dev_priv) -{ - struct ilk_wm_values *hw = &dev_priv->wm.hw; - struct intel_crtc *crtc; - - ilk_init_lp_watermarks(dev_priv); - - for_each_intel_crtc(&dev_priv->drm, crtc) - ilk_pipe_wm_get_hw_state(crtc); - - hw->wm_lp[0] = intel_uncore_read(&dev_priv->uncore, WM1_LP_ILK); - hw->wm_lp[1] = intel_uncore_read(&dev_priv->uncore, WM2_LP_ILK); - hw->wm_lp[2] = intel_uncore_read(&dev_priv->uncore, WM3_LP_ILK); - - hw->wm_lp_spr[0] = intel_uncore_read(&dev_priv->uncore, WM1S_LP_ILK); - if (DISPLAY_VER(dev_priv) >= 7) { - hw->wm_lp_spr[1] = intel_uncore_read(&dev_priv->uncore, WM2S_LP_IVB); - hw->wm_lp_spr[2] = intel_uncore_read(&dev_priv->uncore, WM3S_LP_IVB); - } - - if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) - hw->partitioning = (intel_uncore_read(&dev_priv->uncore, WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ? - INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; - else if (IS_IVYBRIDGE(dev_priv)) - hw->partitioning = (intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL2) & DISP_DATA_PARTITION_5_6) ? - INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; - - hw->enable_fbc_wm = - !(intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) & DISP_FBC_WM_DIS); -} - -/** - * intel_update_watermarks - update FIFO watermark values based on current modes - * @crtc: the #intel_crtc on which to compute the WM - * - * Calculate watermark values for the various WM regs based on current mode - * and plane configuration. - * - * There are several cases to deal with here: - * - normal (i.e. non-self-refresh) - * - self-refresh (SR) mode - * - lines are large relative to FIFO size (buffer can hold up to 2) - * - lines are small relative to FIFO size (buffer can hold more than 2 - * lines), so need to account for TLB latency - * - * The normal calculation is: - * watermark = dotclock * bytes per pixel * latency - * where latency is platform & configuration dependent (we assume pessimal - * values here). - * - * The SR calculation is: - * watermark = (trunc(latency/line time)+1) * surface width * - * bytes per pixel - * where - * line time = htotal / dotclock - * surface width = hdisplay for normal plane and 64 for cursor - * and latency is assumed to be high, as above. - * - * The final value programmed to the register should always be rounded up, - * and include an extra 2 entries to account for clock crossings. - * - * We don't use the sprite, so we can ignore that. And on Crestline we have - * to set the non-SR watermarks to 8. - */ -void intel_update_watermarks(struct intel_crtc *crtc) -{ - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - - if (dev_priv->display.update_wm) - dev_priv->display.update_wm(crtc); -} - -void intel_enable_ipc(struct drm_i915_private *dev_priv) -{ - u32 val; - - if (!HAS_IPC(dev_priv)) - return; - - val = intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL2); - - if (dev_priv->ipc_enabled) - val |= DISP_IPC_ENABLE; - else - val &= ~DISP_IPC_ENABLE; - - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL2, val); -} - -static bool intel_can_enable_ipc(struct drm_i915_private *dev_priv) -{ - /* Display WA #0477 WaDisableIPC: skl */ - if (IS_SKYLAKE(dev_priv)) - return false; - - /* Display WA #1141: SKL:all KBL:all CFL */ - if (IS_KABYLAKE(dev_priv) || - IS_COFFEELAKE(dev_priv) || - IS_COMETLAKE(dev_priv)) - return dev_priv->dram_info.symmetric_memory; - - return true; -} - -void intel_init_ipc(struct drm_i915_private *dev_priv) -{ - if (!HAS_IPC(dev_priv)) - return; - - dev_priv->ipc_enabled = intel_can_enable_ipc(dev_priv); - - intel_enable_ipc(dev_priv); -} - -static void ibx_init_clock_gating(struct drm_i915_private *dev_priv) -{ - /* - * On Ibex Peak and Cougar Point, we need to disable clock - * gating for the panel power sequencer or it will fail to - * start up when no ports are active. - */ - intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); -} - -static void g4x_disable_trickle_feed(struct drm_i915_private *dev_priv) -{ - enum pipe pipe; - - for_each_pipe(dev_priv, pipe) { - intel_uncore_write(&dev_priv->uncore, DSPCNTR(pipe), - intel_uncore_read(&dev_priv->uncore, DSPCNTR(pipe)) | - DISPPLANE_TRICKLE_FEED_DISABLE); - - intel_uncore_write(&dev_priv->uncore, DSPSURF(pipe), intel_uncore_read(&dev_priv->uncore, DSPSURF(pipe))); - intel_uncore_posting_read(&dev_priv->uncore, DSPSURF(pipe)); - } -} - -static void ilk_init_clock_gating(struct drm_i915_private *dev_priv) -{ - u32 dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; - - /* - * Required for FBC - * WaFbcDisableDpfcClockGating:ilk - */ - dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE | - ILK_DPFCUNIT_CLOCK_GATE_DISABLE | - ILK_DPFDUNIT_CLOCK_GATE_ENABLE; - - intel_uncore_write(&dev_priv->uncore, PCH_3DCGDIS0, - MARIUNIT_CLOCK_GATE_DISABLE | - SVSMUNIT_CLOCK_GATE_DISABLE); - intel_uncore_write(&dev_priv->uncore, PCH_3DCGDIS1, - VFMUNIT_CLOCK_GATE_DISABLE); - - /* - * According to the spec the following bits should be set in - * order to enable memory self-refresh - * The bit 22/21 of 0x42004 - * The bit 5 of 0x42020 - * The bit 15 of 0x45000 - */ - intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2, - (intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) | - ILK_DPARB_GATE | ILK_VSDPFD_FULL)); - dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE; - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, - (intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) | - DISP_FBC_WM_DIS)); - - /* - * Based on the document from hardware guys the following bits - * should be set unconditionally in order to enable FBC. - * The bit 22 of 0x42000 - * The bit 22 of 0x42004 - * The bit 7,8,9 of 0x42020. - */ - if (IS_IRONLAKE_M(dev_priv)) { - /* WaFbcAsynchFlipDisableFbcQueue:ilk */ - intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1, - intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1) | - ILK_FBCQ_DIS); - intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2, - intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) | - ILK_DPARB_GATE); - } - - intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D, dspclk_gate); - - intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2, - intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) | - ILK_ELPIN_409_SELECT); - - g4x_disable_trickle_feed(dev_priv); - - ibx_init_clock_gating(dev_priv); -} - -static void cpt_init_clock_gating(struct drm_i915_private *dev_priv) -{ - enum pipe pipe; - u32 val; - - /* - * On Ibex Peak and Cougar Point, we need to disable clock - * gating for the panel power sequencer or it will fail to - * start up when no ports are active. - */ - intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE | - PCH_DPLUNIT_CLOCK_GATE_DISABLE | - PCH_CPUNIT_CLOCK_GATE_DISABLE); - intel_uncore_write(&dev_priv->uncore, SOUTH_CHICKEN2, intel_uncore_read(&dev_priv->uncore, SOUTH_CHICKEN2) | - DPLS_EDP_PPS_FIX_DIS); - /* The below fixes the weird display corruption, a few pixels shifted - * downward, on (only) LVDS of some HP laptops with IVY. - */ - for_each_pipe(dev_priv, pipe) { - val = intel_uncore_read(&dev_priv->uncore, TRANS_CHICKEN2(pipe)); - val |= TRANS_CHICKEN2_TIMING_OVERRIDE; - val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED; - if (dev_priv->vbt.fdi_rx_polarity_inverted) - val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED; - val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER; - val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH; - intel_uncore_write(&dev_priv->uncore, TRANS_CHICKEN2(pipe), val); - } - /* WADP0ClockGatingDisable */ - for_each_pipe(dev_priv, pipe) { - intel_uncore_write(&dev_priv->uncore, TRANS_CHICKEN1(pipe), - TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); - } -} - -static void gen6_check_mch_setup(struct drm_i915_private *dev_priv) -{ - u32 tmp; - - tmp = intel_uncore_read(&dev_priv->uncore, MCH_SSKPD); - if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL) - drm_dbg_kms(&dev_priv->drm, - "Wrong MCH_SSKPD value: 0x%08x This can cause underruns.\n", - tmp); -} - -static void gen6_init_clock_gating(struct drm_i915_private *dev_priv) -{ - u32 dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; - - intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D, dspclk_gate); - - intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2, - intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) | - ILK_ELPIN_409_SELECT); - - intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1, - intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) | - GEN6_BLBUNIT_CLOCK_GATE_DISABLE | - GEN6_CSUNIT_CLOCK_GATE_DISABLE); - - /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock - * gating disable must be set. Failure to set it results in - * flickering pixels due to Z write ordering failures after - * some amount of runtime in the Mesa "fire" demo, and Unigine - * Sanctuary and Tropics, and apparently anything else with - * alpha test or pixel discard. - * - * According to the spec, bit 11 (RCCUNIT) must also be set, - * but we didn't debug actual testcases to find it out. - * - * WaDisableRCCUnitClockGating:snb - * WaDisableRCPBUnitClockGating:snb - */ - intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL2, - GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | - GEN6_RCCUNIT_CLOCK_GATE_DISABLE); - - /* - * According to the spec the following bits should be - * set in order to enable memory self-refresh and fbc: - * The bit21 and bit22 of 0x42000 - * The bit21 and bit22 of 0x42004 - * The bit5 and bit7 of 0x42020 - * The bit14 of 0x70180 - * The bit14 of 0x71180 - * - * WaFbcAsynchFlipDisableFbcQueue:snb - */ - intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1, - intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1) | - ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS); - intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2, - intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) | - ILK_DPARB_GATE | ILK_VSDPFD_FULL); - intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D, - intel_uncore_read(&dev_priv->uncore, ILK_DSPCLK_GATE_D) | - ILK_DPARBUNIT_CLOCK_GATE_ENABLE | - ILK_DPFDUNIT_CLOCK_GATE_ENABLE); - - g4x_disable_trickle_feed(dev_priv); - - cpt_init_clock_gating(dev_priv); - - gen6_check_mch_setup(dev_priv); -} - -static void lpt_init_clock_gating(struct drm_i915_private *dev_priv) -{ - /* - * TODO: this bit should only be enabled when really needed, then - * disabled when not needed anymore in order to save power. - */ - if (HAS_PCH_LPT_LP(dev_priv)) - intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, - intel_uncore_read(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D) | - PCH_LP_PARTITION_LEVEL_DISABLE); - - /* WADPOClockGatingDisable:hsw */ - intel_uncore_write(&dev_priv->uncore, TRANS_CHICKEN1(PIPE_A), - intel_uncore_read(&dev_priv->uncore, TRANS_CHICKEN1(PIPE_A)) | - TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); -} - -static void lpt_suspend_hw(struct drm_i915_private *dev_priv) -{ - if (HAS_PCH_LPT_LP(dev_priv)) { - u32 val = intel_uncore_read(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D); - - val &= ~PCH_LP_PARTITION_LEVEL_DISABLE; - intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, val); - } -} - -static void gen8_set_l3sqc_credits(struct drm_i915_private *dev_priv, - int general_prio_credits, - int high_prio_credits) -{ - u32 misccpctl; - u32 val; - - /* WaTempDisableDOPClkGating:bdw */ - misccpctl = intel_uncore_read(&dev_priv->uncore, GEN7_MISCCPCTL); - intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); - - val = intel_uncore_read(&dev_priv->uncore, GEN8_L3SQCREG1); - val &= ~L3_PRIO_CREDITS_MASK; - val |= L3_GENERAL_PRIO_CREDITS(general_prio_credits); - val |= L3_HIGH_PRIO_CREDITS(high_prio_credits); - intel_uncore_write(&dev_priv->uncore, GEN8_L3SQCREG1, val); - - /* - * Wait at least 100 clocks before re-enabling clock gating. - * See the definition of L3SQCREG1 in BSpec. - */ - intel_uncore_posting_read(&dev_priv->uncore, GEN8_L3SQCREG1); - udelay(1); - intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, misccpctl); -} - -static void icl_init_clock_gating(struct drm_i915_private *dev_priv) -{ - /* Wa_1409120013:icl,ehl */ - intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN, - ILK_DPFC_CHICKEN_COMP_DUMMY_PIXEL); - - /* This is not an Wa. Enable to reduce Sampler power */ - intel_uncore_write(&dev_priv->uncore, GEN10_DFR_RATIO_EN_AND_CHICKEN, - intel_uncore_read(&dev_priv->uncore, GEN10_DFR_RATIO_EN_AND_CHICKEN) & ~DFR_DISABLE); - - /*Wa_14010594013:icl, ehl */ - intel_uncore_rmw(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1, - 0, CNL_DELAY_PMRSP); -} - -static void gen12lp_init_clock_gating(struct drm_i915_private *dev_priv) -{ - /* Wa_1409120013:tgl,rkl,adl_s,dg1 */ - intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN, - ILK_DPFC_CHICKEN_COMP_DUMMY_PIXEL); - - /* Wa_1409825376:tgl (pre-prod)*/ - if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B1)) - intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_3, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_3) | - TGL_VRH_GATING_DIS); - - /* Wa_14011059788:tgl,rkl,adl_s,dg1 */ - intel_uncore_rmw(&dev_priv->uncore, GEN10_DFR_RATIO_EN_AND_CHICKEN, - 0, DFR_DISABLE); - - /* Wa_14013723622:tgl,rkl,dg1,adl-s */ - if (DISPLAY_VER(dev_priv) == 12) - intel_uncore_rmw(&dev_priv->uncore, CLKREQ_POLICY, - CLKREQ_POLICY_MEM_UP_OVRD, 0); -} - -static void adlp_init_clock_gating(struct drm_i915_private *dev_priv) -{ - gen12lp_init_clock_gating(dev_priv); - - /* Wa_22011091694:adlp */ - intel_de_rmw(dev_priv, GEN9_CLKGATE_DIS_5, 0, DPCE_GATING_DIS); -} - -static void dg1_init_clock_gating(struct drm_i915_private *dev_priv) -{ - gen12lp_init_clock_gating(dev_priv); - - /* Wa_1409836686:dg1[a0] */ - if (IS_DG1_REVID(dev_priv, DG1_REVID_A0, DG1_REVID_A0)) - intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_3, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_3) | - DPT_GATING_DIS); -} - -static void cnp_init_clock_gating(struct drm_i915_private *dev_priv) -{ - if (!HAS_PCH_CNP(dev_priv)) - return; - - /* Display WA #1181 WaSouthDisplayDisablePWMCGEGating: cnp */ - intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, intel_uncore_read(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D) | - CNP_PWM_CGE_GATING_DISABLE); -} - -static void cnl_init_clock_gating(struct drm_i915_private *dev_priv) -{ - u32 val; - cnp_init_clock_gating(dev_priv); - - /* This is not an Wa. Enable for better image quality */ - intel_uncore_write(&dev_priv->uncore, _3D_CHICKEN3, - _MASKED_BIT_ENABLE(_3D_CHICKEN3_AA_LINE_QUALITY_FIX_ENABLE)); - - /* WaEnableChickenDCPR:cnl */ - intel_uncore_write(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1, - intel_uncore_read(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM); - - /* - * WaFbcWakeMemOn:cnl - * Display WA #0859: cnl - */ - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) | - DISP_FBC_MEMORY_WAKE); - - val = intel_uncore_read(&dev_priv->uncore, SLICE_UNIT_LEVEL_CLKGATE); - /* ReadHitWriteOnlyDisable:cnl */ - val |= RCCUNIT_CLKGATE_DIS; - intel_uncore_write(&dev_priv->uncore, SLICE_UNIT_LEVEL_CLKGATE, val); - - /* Wa_2201832410:cnl */ - val = intel_uncore_read(&dev_priv->uncore, SUBSLICE_UNIT_LEVEL_CLKGATE); - val |= GWUNIT_CLKGATE_DIS; - intel_uncore_write(&dev_priv->uncore, SUBSLICE_UNIT_LEVEL_CLKGATE, val); - - /* WaDisableVFclkgate:cnl */ - /* WaVFUnitClockGatingDisable:cnl */ - val = intel_uncore_read(&dev_priv->uncore, UNSLICE_UNIT_LEVEL_CLKGATE); - val |= VFUNIT_CLKGATE_DIS; - intel_uncore_write(&dev_priv->uncore, UNSLICE_UNIT_LEVEL_CLKGATE, val); -} - -static void cfl_init_clock_gating(struct drm_i915_private *dev_priv) -{ - cnp_init_clock_gating(dev_priv); - gen9_init_clock_gating(dev_priv); - - /* WAC6entrylatency:cfl */ - intel_uncore_write(&dev_priv->uncore, FBC_LLC_READ_CTRL, intel_uncore_read(&dev_priv->uncore, FBC_LLC_READ_CTRL) | - FBC_LLC_FULLY_OPEN); - - /* - * WaFbcTurnOffFbcWatermark:cfl - * Display WA #0562: cfl - */ - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) | - DISP_FBC_WM_DIS); - - /* - * WaFbcNukeOnHostModify:cfl - * Display WA #0873: cfl - */ - intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN, intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN) | - ILK_DPFC_NUKE_ON_ANY_MODIFICATION); -} - -static void kbl_init_clock_gating(struct drm_i915_private *dev_priv) -{ - gen9_init_clock_gating(dev_priv); - - /* WAC6entrylatency:kbl */ - intel_uncore_write(&dev_priv->uncore, FBC_LLC_READ_CTRL, intel_uncore_read(&dev_priv->uncore, FBC_LLC_READ_CTRL) | - FBC_LLC_FULLY_OPEN); - - /* WaDisableSDEUnitClockGating:kbl */ - if (IS_KBL_GT_STEP(dev_priv, 0, STEP_B0)) - intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) | - GEN8_SDEUNIT_CLOCK_GATE_DISABLE); - - /* WaDisableGamClockGating:kbl */ - if (IS_KBL_GT_STEP(dev_priv, 0, STEP_B0)) - intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1, intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) | - GEN6_GAMUNIT_CLOCK_GATE_DISABLE); - - /* - * WaFbcTurnOffFbcWatermark:kbl - * Display WA #0562: kbl - */ - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) | - DISP_FBC_WM_DIS); - - /* - * WaFbcNukeOnHostModify:kbl - * Display WA #0873: kbl - */ - intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN, intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN) | - ILK_DPFC_NUKE_ON_ANY_MODIFICATION); -} - -static void skl_init_clock_gating(struct drm_i915_private *dev_priv) -{ - gen9_init_clock_gating(dev_priv); - - /* WaDisableDopClockGating:skl */ - intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, intel_uncore_read(&dev_priv->uncore, GEN7_MISCCPCTL) & - ~GEN7_DOP_CLOCK_GATE_ENABLE); - - /* WAC6entrylatency:skl */ - intel_uncore_write(&dev_priv->uncore, FBC_LLC_READ_CTRL, intel_uncore_read(&dev_priv->uncore, FBC_LLC_READ_CTRL) | - FBC_LLC_FULLY_OPEN); - - /* - * WaFbcTurnOffFbcWatermark:skl - * Display WA #0562: skl - */ - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) | - DISP_FBC_WM_DIS); - - /* - * WaFbcNukeOnHostModify:skl - * Display WA #0873: skl - */ - intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN, intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN) | - ILK_DPFC_NUKE_ON_ANY_MODIFICATION); - - /* - * WaFbcHighMemBwCorruptionAvoidance:skl - * Display WA #0883: skl - */ - intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN, intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN) | - ILK_DPFC_DISABLE_DUMMY0); -} - -static void bdw_init_clock_gating(struct drm_i915_private *dev_priv) -{ - enum pipe pipe; - - /* WaFbcAsynchFlipDisableFbcQueue:hsw,bdw */ - intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A), - intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A)) | - HSW_FBCQ_DIS); - - /* WaSwitchSolVfFArbitrationPriority:bdw */ - intel_uncore_write(&dev_priv->uncore, GAM_ECOCHK, intel_uncore_read(&dev_priv->uncore, GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); - - /* WaPsrDPAMaskVBlankInSRD:bdw */ - intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR1_1, - intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD); - - for_each_pipe(dev_priv, pipe) { - /* WaPsrDPRSUnmaskVBlankInSRD:bdw */ - intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe), - intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe)) | - BDW_DPRS_MASK_VBLANK_SRD); - - /* Undocumented but fixes async flip + VT-d corruption */ - if (intel_vtd_active()) - intel_uncore_rmw(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe), - HSW_PRI_STRETCH_MAX_MASK, HSW_PRI_STRETCH_MAX_X1); - } - - /* WaVSRefCountFullforceMissDisable:bdw */ - /* WaDSRefCountFullforceMissDisable:bdw */ - intel_uncore_write(&dev_priv->uncore, GEN7_FF_THREAD_MODE, - intel_uncore_read(&dev_priv->uncore, GEN7_FF_THREAD_MODE) & - ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME)); - - intel_uncore_write(&dev_priv->uncore, GEN6_RC_SLEEP_PSMI_CONTROL, - _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); - - /* WaDisableSDEUnitClockGating:bdw */ - intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) | - GEN8_SDEUNIT_CLOCK_GATE_DISABLE); - - /* WaProgramL3SqcReg1Default:bdw */ - gen8_set_l3sqc_credits(dev_priv, 30, 2); - - /* WaKVMNotificationOnConfigChange:bdw */ - intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR2_1, intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR2_1) - | KVM_CONFIG_CHANGE_NOTIFICATION_SELECT); - - lpt_init_clock_gating(dev_priv); - - /* WaDisableDopClockGating:bdw - * - * Also see the CHICKEN2 write in bdw_init_workarounds() to disable DOP - * clock gating. - */ - intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1, - intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) | GEN6_EU_TCUNIT_CLOCK_GATE_DISABLE); -} - -static void hsw_init_clock_gating(struct drm_i915_private *dev_priv) -{ - enum pipe pipe; - - /* WaFbcAsynchFlipDisableFbcQueue:hsw,bdw */ - intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A), - intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A)) | - HSW_FBCQ_DIS); - - for_each_pipe(dev_priv, pipe) { - /* Undocumented but fixes async flip + VT-d corruption */ - if (intel_vtd_active()) - intel_uncore_rmw(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe), - HSW_PRI_STRETCH_MAX_MASK, HSW_PRI_STRETCH_MAX_X1); - } - - /* This is required by WaCatErrorRejectionIssue:hsw */ - intel_uncore_write(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, - intel_uncore_read(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | - GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); - - /* WaSwitchSolVfFArbitrationPriority:hsw */ - intel_uncore_write(&dev_priv->uncore, GAM_ECOCHK, intel_uncore_read(&dev_priv->uncore, GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); - - lpt_init_clock_gating(dev_priv); -} - -static void ivb_init_clock_gating(struct drm_i915_private *dev_priv) -{ - u32 snpcr; - - intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D, ILK_VRHUNIT_CLOCK_GATE_DISABLE); - - /* WaFbcAsynchFlipDisableFbcQueue:ivb */ - intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1, - intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1) | - ILK_FBCQ_DIS); - - /* WaDisableBackToBackFlipFix:ivb */ - intel_uncore_write(&dev_priv->uncore, IVB_CHICKEN3, - CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | - CHICKEN3_DGMG_DONE_FIX_DISABLE); - - if (IS_IVB_GT1(dev_priv)) - intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2, - _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); - else { - /* must write both registers */ - intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2, - _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); - intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2_GT2, - _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); - } - - /* - * According to the spec, bit 13 (RCZUNIT) must be set on IVB. - * This implements the WaDisableRCZUnitClockGating:ivb workaround. - */ - intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL2, - GEN6_RCZUNIT_CLOCK_GATE_DISABLE); - - /* This is required by WaCatErrorRejectionIssue:ivb */ - intel_uncore_write(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, - intel_uncore_read(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | - GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); - - g4x_disable_trickle_feed(dev_priv); - - snpcr = intel_uncore_read(&dev_priv->uncore, GEN6_MBCUNIT_SNPCR); - snpcr &= ~GEN6_MBC_SNPCR_MASK; - snpcr |= GEN6_MBC_SNPCR_MED; - intel_uncore_write(&dev_priv->uncore, GEN6_MBCUNIT_SNPCR, snpcr); - - if (!HAS_PCH_NOP(dev_priv)) - cpt_init_clock_gating(dev_priv); - - gen6_check_mch_setup(dev_priv); -} - -static void vlv_init_clock_gating(struct drm_i915_private *dev_priv) -{ - /* WaDisableBackToBackFlipFix:vlv */ - intel_uncore_write(&dev_priv->uncore, IVB_CHICKEN3, - CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | - CHICKEN3_DGMG_DONE_FIX_DISABLE); - - /* WaDisableDopClockGating:vlv */ - intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2, - _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); - - /* This is required by WaCatErrorRejectionIssue:vlv */ - intel_uncore_write(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, - intel_uncore_read(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | - GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); - - /* - * According to the spec, bit 13 (RCZUNIT) must be set on IVB. - * This implements the WaDisableRCZUnitClockGating:vlv workaround. - */ - intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL2, - GEN6_RCZUNIT_CLOCK_GATE_DISABLE); - - /* WaDisableL3Bank2xClockGate:vlv - * Disabling L3 clock gating- MMIO 940c[25] = 1 - * Set bit 25, to disable L3_BANK_2x_CLK_GATING */ - intel_uncore_write(&dev_priv->uncore, GEN7_UCGCTL4, - intel_uncore_read(&dev_priv->uncore, GEN7_UCGCTL4) | GEN7_L3BANK2X_CLOCK_GATE_DISABLE); - - /* - * WaDisableVLVClockGating_VBIIssue:vlv - * Disable clock gating on th GCFG unit to prevent a delay - * in the reporting of vblank events. - */ - intel_uncore_write(&dev_priv->uncore, VLV_GUNIT_CLOCK_GATE, GCFG_DIS); -} - -static void chv_init_clock_gating(struct drm_i915_private *dev_priv) -{ - /* WaVSRefCountFullforceMissDisable:chv */ - /* WaDSRefCountFullforceMissDisable:chv */ - intel_uncore_write(&dev_priv->uncore, GEN7_FF_THREAD_MODE, - intel_uncore_read(&dev_priv->uncore, GEN7_FF_THREAD_MODE) & - ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME)); - - /* WaDisableSemaphoreAndSyncFlipWait:chv */ - intel_uncore_write(&dev_priv->uncore, GEN6_RC_SLEEP_PSMI_CONTROL, - _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); - - /* WaDisableCSUnitClockGating:chv */ - intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1, intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) | - GEN6_CSUNIT_CLOCK_GATE_DISABLE); - - /* WaDisableSDEUnitClockGating:chv */ - intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) | - GEN8_SDEUNIT_CLOCK_GATE_DISABLE); - - /* - * WaProgramL3SqcReg1Default:chv - * See gfxspecs/Related Documents/Performance Guide/ - * LSQC Setting Recommendations. - */ - gen8_set_l3sqc_credits(dev_priv, 38, 2); -} - -static void g4x_init_clock_gating(struct drm_i915_private *dev_priv) -{ - u32 dspclk_gate; - - intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D1, 0); - intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE | - GS_UNIT_CLOCK_GATE_DISABLE | - CL_UNIT_CLOCK_GATE_DISABLE); - intel_uncore_write(&dev_priv->uncore, RAMCLK_GATE_D, 0); - dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE | - OVRUNIT_CLOCK_GATE_DISABLE | - OVCUNIT_CLOCK_GATE_DISABLE; - if (IS_GM45(dev_priv)) - dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE; - intel_uncore_write(&dev_priv->uncore, DSPCLK_GATE_D, dspclk_gate); - - g4x_disable_trickle_feed(dev_priv); -} - -static void i965gm_init_clock_gating(struct drm_i915_private *dev_priv) -{ - struct intel_uncore *uncore = &dev_priv->uncore; - - intel_uncore_write(uncore, RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE); - intel_uncore_write(uncore, RENCLK_GATE_D2, 0); - intel_uncore_write(uncore, DSPCLK_GATE_D, 0); - intel_uncore_write(uncore, RAMCLK_GATE_D, 0); - intel_uncore_write16(uncore, DEUC, 0); - intel_uncore_write(uncore, - MI_ARB_STATE, - _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); -} - -static void i965g_init_clock_gating(struct drm_i915_private *dev_priv) -{ - intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE | - I965_RCC_CLOCK_GATE_DISABLE | - I965_RCPB_CLOCK_GATE_DISABLE | - I965_ISC_CLOCK_GATE_DISABLE | - I965_FBC_CLOCK_GATE_DISABLE); - intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D2, 0); - intel_uncore_write(&dev_priv->uncore, MI_ARB_STATE, - _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); -} - -static void gen3_init_clock_gating(struct drm_i915_private *dev_priv) -{ - u32 dstate = intel_uncore_read(&dev_priv->uncore, D_STATE); - - dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING | - DSTATE_DOT_CLOCK_GATING; - intel_uncore_write(&dev_priv->uncore, D_STATE, dstate); - - if (IS_PINEVIEW(dev_priv)) - intel_uncore_write(&dev_priv->uncore, ECOSKPD, _MASKED_BIT_ENABLE(ECO_GATING_CX_ONLY)); - - /* IIR "flip pending" means done if this bit is set */ - intel_uncore_write(&dev_priv->uncore, ECOSKPD, _MASKED_BIT_DISABLE(ECO_FLIP_DONE)); - - /* interrupts should cause a wake up from C3 */ - intel_uncore_write(&dev_priv->uncore, INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_INT_EN)); - - /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ - intel_uncore_write(&dev_priv->uncore, MI_ARB_STATE, _MASKED_BIT_ENABLE(MI_ARB_C3_LP_WRITE_ENABLE)); - - intel_uncore_write(&dev_priv->uncore, MI_ARB_STATE, - _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); -} - -static void i85x_init_clock_gating(struct drm_i915_private *dev_priv) -{ - intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE); - - /* interrupts should cause a wake up from C3 */ - intel_uncore_write(&dev_priv->uncore, MI_STATE, _MASKED_BIT_ENABLE(MI_AGPBUSY_INT_EN) | - _MASKED_BIT_DISABLE(MI_AGPBUSY_830_MODE)); - - intel_uncore_write(&dev_priv->uncore, MEM_MODE, - _MASKED_BIT_ENABLE(MEM_DISPLAY_TRICKLE_FEED_DISABLE)); - - /* - * Have FBC ignore 3D activity since we use software - * render tracking, and otherwise a pure 3D workload - * (even if it just renders a single frame and then does - * abosultely nothing) would not allow FBC to recompress - * until a 2D blit occurs. - */ - intel_uncore_write(&dev_priv->uncore, SCPD0, - _MASKED_BIT_ENABLE(SCPD_FBC_IGNORE_3D)); -} - -static void i830_init_clock_gating(struct drm_i915_private *dev_priv) -{ - intel_uncore_write(&dev_priv->uncore, MEM_MODE, - _MASKED_BIT_ENABLE(MEM_DISPLAY_A_TRICKLE_FEED_DISABLE) | - _MASKED_BIT_ENABLE(MEM_DISPLAY_B_TRICKLE_FEED_DISABLE)); -} - -void intel_init_clock_gating(struct drm_i915_private *dev_priv) -{ - dev_priv->display.init_clock_gating(dev_priv); -} - -void intel_suspend_hw(struct drm_i915_private *dev_priv) -{ - if (HAS_PCH_LPT(dev_priv)) - lpt_suspend_hw(dev_priv); -} - -static void nop_init_clock_gating(struct drm_i915_private *dev_priv) -{ - drm_dbg_kms(&dev_priv->drm, - "No clock gating settings or workarounds applied.\n"); -} - -/** - * intel_init_clock_gating_hooks - setup the clock gating hooks - * @dev_priv: device private - * - * Setup the hooks that configure which clocks of a given platform can be - * gated and also apply various GT and display specific workarounds for these - * platforms. Note that some GT specific workarounds are applied separately - * when GPU contexts or batchbuffers start their execution. - */ -void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv) -{ - if (IS_ALDERLAKE_P(dev_priv)) - dev_priv->display.init_clock_gating = adlp_init_clock_gating; - else if (IS_DG1(dev_priv)) - dev_priv->display.init_clock_gating = dg1_init_clock_gating; - else if (GRAPHICS_VER(dev_priv) == 12) - dev_priv->display.init_clock_gating = gen12lp_init_clock_gating; - else if (GRAPHICS_VER(dev_priv) == 11) - dev_priv->display.init_clock_gating = icl_init_clock_gating; - else if (IS_CANNONLAKE(dev_priv)) - dev_priv->display.init_clock_gating = cnl_init_clock_gating; - else if (IS_COFFEELAKE(dev_priv) || IS_COMETLAKE(dev_priv)) - dev_priv->display.init_clock_gating = cfl_init_clock_gating; - else if (IS_SKYLAKE(dev_priv)) - dev_priv->display.init_clock_gating = skl_init_clock_gating; - else if (IS_KABYLAKE(dev_priv)) - dev_priv->display.init_clock_gating = kbl_init_clock_gating; - else if (IS_BROXTON(dev_priv)) - dev_priv->display.init_clock_gating = bxt_init_clock_gating; - else if (IS_GEMINILAKE(dev_priv)) - dev_priv->display.init_clock_gating = glk_init_clock_gating; - else if (IS_BROADWELL(dev_priv)) - dev_priv->display.init_clock_gating = bdw_init_clock_gating; - else if (IS_CHERRYVIEW(dev_priv)) - dev_priv->display.init_clock_gating = chv_init_clock_gating; - else if (IS_HASWELL(dev_priv)) - dev_priv->display.init_clock_gating = hsw_init_clock_gating; - else if (IS_IVYBRIDGE(dev_priv)) - dev_priv->display.init_clock_gating = ivb_init_clock_gating; - else if (IS_VALLEYVIEW(dev_priv)) - dev_priv->display.init_clock_gating = vlv_init_clock_gating; - else if (GRAPHICS_VER(dev_priv) == 6) - dev_priv->display.init_clock_gating = gen6_init_clock_gating; - else if (GRAPHICS_VER(dev_priv) == 5) - dev_priv->display.init_clock_gating = ilk_init_clock_gating; - else if (IS_G4X(dev_priv)) - dev_priv->display.init_clock_gating = g4x_init_clock_gating; - else if (IS_I965GM(dev_priv)) - dev_priv->display.init_clock_gating = i965gm_init_clock_gating; - else if (IS_I965G(dev_priv)) - dev_priv->display.init_clock_gating = i965g_init_clock_gating; - else if (GRAPHICS_VER(dev_priv) == 3) - dev_priv->display.init_clock_gating = gen3_init_clock_gating; - else if (IS_I85X(dev_priv) || IS_I865G(dev_priv)) - dev_priv->display.init_clock_gating = i85x_init_clock_gating; - else if (GRAPHICS_VER(dev_priv) == 2) - dev_priv->display.init_clock_gating = i830_init_clock_gating; - else { - MISSING_CASE(INTEL_DEVID(dev_priv)); - dev_priv->display.init_clock_gating = nop_init_clock_gating; - } -} - -/* Set up chip specific power management-related functions */ -void intel_init_pm(struct drm_i915_private *dev_priv) -{ - /* For cxsr */ - if (IS_PINEVIEW(dev_priv)) - pnv_get_mem_freq(dev_priv); - else if (GRAPHICS_VER(dev_priv) == 5) - ilk_get_mem_freq(dev_priv); - - if (intel_has_sagv(dev_priv)) - skl_setup_sagv_block_time(dev_priv); - - /* For FIFO watermark updates */ - if (DISPLAY_VER(dev_priv) >= 9) { - skl_setup_wm_latency(dev_priv); - dev_priv->display.compute_global_watermarks = skl_compute_wm; - } else if (HAS_PCH_SPLIT(dev_priv)) { - ilk_setup_wm_latency(dev_priv); - - if ((DISPLAY_VER(dev_priv) == 5 && dev_priv->wm.pri_latency[1] && - dev_priv->wm.spr_latency[1] && dev_priv->wm.cur_latency[1]) || - (DISPLAY_VER(dev_priv) != 5 && dev_priv->wm.pri_latency[0] && - dev_priv->wm.spr_latency[0] && dev_priv->wm.cur_latency[0])) { - dev_priv->display.compute_pipe_wm = ilk_compute_pipe_wm; - dev_priv->display.compute_intermediate_wm = - ilk_compute_intermediate_wm; - dev_priv->display.initial_watermarks = - ilk_initial_watermarks; - dev_priv->display.optimize_watermarks = - ilk_optimize_watermarks; - } else { - drm_dbg_kms(&dev_priv->drm, - "Failed to read display plane latency. " - "Disable CxSR\n"); - } - } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { - vlv_setup_wm_latency(dev_priv); - dev_priv->display.compute_pipe_wm = vlv_compute_pipe_wm; - dev_priv->display.compute_intermediate_wm = vlv_compute_intermediate_wm; - dev_priv->display.initial_watermarks = vlv_initial_watermarks; - dev_priv->display.optimize_watermarks = vlv_optimize_watermarks; - dev_priv->display.atomic_update_watermarks = vlv_atomic_update_fifo; - } else if (IS_G4X(dev_priv)) { - g4x_setup_wm_latency(dev_priv); - dev_priv->display.compute_pipe_wm = g4x_compute_pipe_wm; - dev_priv->display.compute_intermediate_wm = g4x_compute_intermediate_wm; - dev_priv->display.initial_watermarks = g4x_initial_watermarks; - dev_priv->display.optimize_watermarks = g4x_optimize_watermarks; - } else if (IS_PINEVIEW(dev_priv)) { - if (!intel_get_cxsr_latency(!IS_MOBILE(dev_priv), - dev_priv->is_ddr3, - dev_priv->fsb_freq, - dev_priv->mem_freq)) { - drm_info(&dev_priv->drm, - "failed to find known CxSR latency " - "(found ddr%s fsb freq %d, mem freq %d), " - "disabling CxSR\n", - (dev_priv->is_ddr3 == 1) ? "3" : "2", - dev_priv->fsb_freq, dev_priv->mem_freq); - /* Disable CxSR and never update its watermark again */ - intel_set_memory_cxsr(dev_priv, false); - dev_priv->display.update_wm = NULL; - } else - dev_priv->display.update_wm = pnv_update_wm; - } else if (DISPLAY_VER(dev_priv) == 4) { - dev_priv->display.update_wm = i965_update_wm; - } else if (DISPLAY_VER(dev_priv) == 3) { - dev_priv->display.update_wm = i9xx_update_wm; - dev_priv->display.get_fifo_size = i9xx_get_fifo_size; - } else if (DISPLAY_VER(dev_priv) == 2) { - if (INTEL_NUM_PIPES(dev_priv) == 1) { - dev_priv->display.update_wm = i845_update_wm; - dev_priv->display.get_fifo_size = i845_get_fifo_size; - } else { - dev_priv->display.update_wm = i9xx_update_wm; - dev_priv->display.get_fifo_size = i830_get_fifo_size; - } - } else { - drm_err(&dev_priv->drm, - "unexpected fall-through in %s\n", __func__); - } -} - -void intel_pm_setup(struct drm_i915_private *dev_priv) -{ - dev_priv->runtime_pm.suspended = false; - atomic_set(&dev_priv->runtime_pm.wakeref_count, 0); -} - -static struct intel_global_state *intel_dbuf_duplicate_state(struct intel_global_obj *obj) -{ - struct intel_dbuf_state *dbuf_state; - - dbuf_state = kmemdup(obj->state, sizeof(*dbuf_state), GFP_KERNEL); - if (!dbuf_state) - return NULL; - - return &dbuf_state->base; -} - -static void intel_dbuf_destroy_state(struct intel_global_obj *obj, - struct intel_global_state *state) -{ - kfree(state); -} - -static const struct intel_global_state_funcs intel_dbuf_funcs = { - .atomic_duplicate_state = intel_dbuf_duplicate_state, - .atomic_destroy_state = intel_dbuf_destroy_state, -}; - -struct intel_dbuf_state * -intel_atomic_get_dbuf_state(struct intel_atomic_state *state) -{ - struct drm_i915_private *dev_priv = to_i915(state->base.dev); - struct intel_global_state *dbuf_state; - - dbuf_state = intel_atomic_get_global_obj_state(state, &dev_priv->dbuf.obj); - if (IS_ERR(dbuf_state)) - return ERR_CAST(dbuf_state); - - return to_intel_dbuf_state(dbuf_state); -} - -int intel_dbuf_init(struct drm_i915_private *dev_priv) -{ - struct intel_dbuf_state *dbuf_state; - - dbuf_state = kzalloc(sizeof(*dbuf_state), GFP_KERNEL); - if (!dbuf_state) - return -ENOMEM; - - intel_atomic_global_obj_init(dev_priv, &dev_priv->dbuf.obj, - &dbuf_state->base, &intel_dbuf_funcs); - - return 0; -} - -/* - * Configure MBUS_CTL and all DBUF_CTL_S of each slice to join_mbus state before - * update the request state of all DBUS slices. - */ -static void update_mbus_pre_enable(struct intel_atomic_state *state) -{ - struct drm_i915_private *dev_priv = to_i915(state->base.dev); - u32 mbus_ctl, dbuf_min_tracker_val; - enum dbuf_slice slice; - const struct intel_dbuf_state *dbuf_state = - intel_atomic_get_new_dbuf_state(state); - - if (!IS_ALDERLAKE_P(dev_priv)) - return; - - /* - * TODO: Implement vblank synchronized MBUS joining changes. - * Must be properly coordinated with dbuf reprogramming. - */ - if (dbuf_state->joined_mbus) { - mbus_ctl = MBUS_HASHING_MODE_1x4 | MBUS_JOIN | - MBUS_JOIN_PIPE_SELECT_NONE; - dbuf_min_tracker_val = DBUF_MIN_TRACKER_STATE_SERVICE(3); - } else { - mbus_ctl = MBUS_HASHING_MODE_2x2 | - MBUS_JOIN_PIPE_SELECT_NONE; - dbuf_min_tracker_val = DBUF_MIN_TRACKER_STATE_SERVICE(1); - } - - intel_de_rmw(dev_priv, MBUS_CTL, - MBUS_HASHING_MODE_MASK | MBUS_JOIN | - MBUS_JOIN_PIPE_SELECT_MASK, mbus_ctl); - - for_each_dbuf_slice(dev_priv, slice) - intel_de_rmw(dev_priv, DBUF_CTL_S(slice), - DBUF_MIN_TRACKER_STATE_SERVICE_MASK, - dbuf_min_tracker_val); -} - -void intel_dbuf_pre_plane_update(struct intel_atomic_state *state) -{ - struct drm_i915_private *dev_priv = to_i915(state->base.dev); - const struct intel_dbuf_state *new_dbuf_state = - intel_atomic_get_new_dbuf_state(state); - const struct intel_dbuf_state *old_dbuf_state = - intel_atomic_get_old_dbuf_state(state); - - if (!new_dbuf_state || - ((new_dbuf_state->enabled_slices == old_dbuf_state->enabled_slices) - && (new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus))) - return; - - WARN_ON(!new_dbuf_state->base.changed); - - update_mbus_pre_enable(state); - gen9_dbuf_slices_update(dev_priv, - old_dbuf_state->enabled_slices | - new_dbuf_state->enabled_slices); -} - -void intel_dbuf_post_plane_update(struct intel_atomic_state *state) -{ - struct drm_i915_private *dev_priv = to_i915(state->base.dev); - const struct intel_dbuf_state *new_dbuf_state = - intel_atomic_get_new_dbuf_state(state); - const struct intel_dbuf_state *old_dbuf_state = - intel_atomic_get_old_dbuf_state(state); - - if (!new_dbuf_state || - ((new_dbuf_state->enabled_slices == old_dbuf_state->enabled_slices) - && (new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus))) - return; - - WARN_ON(!new_dbuf_state->base.changed); - - gen9_dbuf_slices_update(dev_priv, - new_dbuf_state->enabled_slices); -} |