diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/hdp_v5_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/hdp_v5_0.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v5_0.c b/drivers/gpu/drm/amd/amdgpu/hdp_v5_0.c new file mode 100644 index 000000000000..7a15e669b68d --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/hdp_v5_0.c @@ -0,0 +1,212 @@ +/* + * Copyright 2020 Advanced Micro Devices, Inc. + * + * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + * + */ +#include "amdgpu.h" +#include "amdgpu_atombios.h" +#include "hdp_v5_0.h" + +#include "hdp/hdp_5_0_0_offset.h" +#include "hdp/hdp_5_0_0_sh_mask.h" +#include <uapi/linux/kfd_ioctl.h> + +static void hdp_v5_0_flush_hdp(struct amdgpu_device *adev, + struct amdgpu_ring *ring) +{ + if (!ring || !ring->funcs->emit_wreg) + WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0); + else + amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0); +} + +static void hdp_v5_0_invalidate_hdp(struct amdgpu_device *adev, + struct amdgpu_ring *ring) +{ + if (!ring || !ring->funcs->emit_wreg) { + WREG32_SOC15_NO_KIQ(HDP, 0, mmHDP_READ_CACHE_INVALIDATE, 1); + } else { + amdgpu_ring_emit_wreg(ring, SOC15_REG_OFFSET( + HDP, 0, mmHDP_READ_CACHE_INVALIDATE), 1); + } +} + +static void hdp_v5_0_update_mem_power_gating(struct amdgpu_device *adev, + bool enable) +{ + uint32_t hdp_clk_cntl, hdp_clk_cntl1; + uint32_t hdp_mem_pwr_cntl; + + if (!(adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS | + AMD_CG_SUPPORT_HDP_DS | + AMD_CG_SUPPORT_HDP_SD))) + return; + + hdp_clk_cntl = hdp_clk_cntl1 = RREG32_SOC15(HDP, 0, mmHDP_CLK_CNTL); + hdp_mem_pwr_cntl = RREG32_SOC15(HDP, 0, mmHDP_MEM_POWER_CTRL); + + /* Before doing clock/power mode switch, + * forced on IPH & RC clock */ + hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL, + IPH_MEM_CLK_SOFT_OVERRIDE, 1); + hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL, + RC_MEM_CLK_SOFT_OVERRIDE, 1); + WREG32_SOC15(HDP, 0, mmHDP_CLK_CNTL, hdp_clk_cntl); + + /* HDP 5.0 doesn't support dynamic power mode switch, + * disable clock and power gating before any changing */ + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, + IPH_MEM_POWER_CTRL_EN, 0); + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, + IPH_MEM_POWER_LS_EN, 0); + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, + IPH_MEM_POWER_DS_EN, 0); + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, + IPH_MEM_POWER_SD_EN, 0); + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, + RC_MEM_POWER_CTRL_EN, 0); + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, + RC_MEM_POWER_LS_EN, 0); + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, + RC_MEM_POWER_DS_EN, 0); + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, + RC_MEM_POWER_SD_EN, 0); + WREG32_SOC15(HDP, 0, mmHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl); + + /* only one clock gating mode (LS/DS/SD) can be enabled */ + if (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS) { + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, + HDP_MEM_POWER_CTRL, + IPH_MEM_POWER_LS_EN, enable); + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, + HDP_MEM_POWER_CTRL, + RC_MEM_POWER_LS_EN, enable); + } else if (adev->cg_flags & AMD_CG_SUPPORT_HDP_DS) { + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, + HDP_MEM_POWER_CTRL, + IPH_MEM_POWER_DS_EN, enable); + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, + HDP_MEM_POWER_CTRL, + RC_MEM_POWER_DS_EN, enable); + } else if (adev->cg_flags & AMD_CG_SUPPORT_HDP_SD) { + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, + HDP_MEM_POWER_CTRL, + IPH_MEM_POWER_SD_EN, enable); + /* RC should not use shut down mode, fallback to ds */ + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, + HDP_MEM_POWER_CTRL, + RC_MEM_POWER_DS_EN, enable); + } + + /* confirmed that IPH_MEM_POWER_CTRL_EN and RC_MEM_POWER_CTRL_EN have to + * be set for SRAM LS/DS/SD */ + if (adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS | AMD_CG_SUPPORT_HDP_DS | + AMD_CG_SUPPORT_HDP_SD)) { + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, + IPH_MEM_POWER_CTRL_EN, 1); + hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, + RC_MEM_POWER_CTRL_EN, 1); + } + + WREG32_SOC15(HDP, 0, mmHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl); + + /* restore IPH & RC clock override after clock/power mode changing */ + WREG32_SOC15(HDP, 0, mmHDP_CLK_CNTL, hdp_clk_cntl1); +} + +static void hdp_v5_0_update_medium_grain_clock_gating(struct amdgpu_device *adev, + bool enable) +{ + uint32_t hdp_clk_cntl; + + if (!(adev->cg_flags & AMD_CG_SUPPORT_HDP_MGCG)) + return; + + hdp_clk_cntl = RREG32_SOC15(HDP, 0, mmHDP_CLK_CNTL); + + if (enable) { + hdp_clk_cntl &= + ~(uint32_t) + (HDP_CLK_CNTL__IPH_MEM_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__RC_MEM_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__DBUS_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__DYN_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__XDP_REG_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__HDP_REG_CLK_SOFT_OVERRIDE_MASK); + } else { + hdp_clk_cntl |= HDP_CLK_CNTL__IPH_MEM_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__RC_MEM_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__DBUS_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__DYN_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__XDP_REG_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__HDP_REG_CLK_SOFT_OVERRIDE_MASK; + } + + WREG32_SOC15(HDP, 0, mmHDP_CLK_CNTL, hdp_clk_cntl); +} + +static void hdp_v5_0_update_clock_gating(struct amdgpu_device *adev, + bool enable) +{ + hdp_v5_0_update_mem_power_gating(adev, enable); + hdp_v5_0_update_medium_grain_clock_gating(adev, enable); +} + +static void hdp_v5_0_get_clockgating_state(struct amdgpu_device *adev, + u32 *flags) +{ + uint32_t tmp; + + /* AMD_CG_SUPPORT_HDP_MGCG */ + tmp = RREG32_SOC15(HDP, 0, mmHDP_CLK_CNTL); + if (!(tmp & (HDP_CLK_CNTL__IPH_MEM_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__RC_MEM_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__DBUS_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__DYN_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__XDP_REG_CLK_SOFT_OVERRIDE_MASK | + HDP_CLK_CNTL__HDP_REG_CLK_SOFT_OVERRIDE_MASK))) + *flags |= AMD_CG_SUPPORT_HDP_MGCG; + + /* AMD_CG_SUPPORT_HDP_LS/DS/SD */ + tmp = RREG32_SOC15(HDP, 0, mmHDP_MEM_POWER_CTRL); + if (tmp & HDP_MEM_POWER_CTRL__IPH_MEM_POWER_LS_EN_MASK) + *flags |= AMD_CG_SUPPORT_HDP_LS; + else if (tmp & HDP_MEM_POWER_CTRL__IPH_MEM_POWER_DS_EN_MASK) + *flags |= AMD_CG_SUPPORT_HDP_DS; + else if (tmp & HDP_MEM_POWER_CTRL__IPH_MEM_POWER_SD_EN_MASK) + *flags |= AMD_CG_SUPPORT_HDP_SD; +} + +static void hdp_v5_0_init_registers(struct amdgpu_device *adev) +{ + u32 tmp; + + tmp = RREG32_SOC15(HDP, 0, mmHDP_MISC_CNTL); + tmp |= HDP_MISC_CNTL__FLUSH_INVALIDATE_CACHE_MASK; + WREG32_SOC15(HDP, 0, mmHDP_MISC_CNTL, tmp); +} + +const struct amdgpu_hdp_funcs hdp_v5_0_funcs = { + .flush_hdp = hdp_v5_0_flush_hdp, + .invalidate_hdp = hdp_v5_0_invalidate_hdp, + .update_clock_gating = hdp_v5_0_update_clock_gating, + .get_clock_gating_state = hdp_v5_0_get_clockgating_state, + .init_registers = hdp_v5_0_init_registers, +}; |