diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 1904 |
1 files changed, 0 insertions, 1904 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c deleted file mode 100644 index adb319b53ecd..000000000000 --- a/drivers/gpu/drm/i915/i915_dma.c +++ /dev/null @@ -1,1904 +0,0 @@ -/* i915_dma.c -- DMA support for the I915 -*- linux-c -*- - */ -/* - * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. - * All Rights Reserved. - * - * 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, sub license, 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 NON-INFRINGEMENT. - * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. - * - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <drm/drmP.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_fb_helper.h> -#include "intel_drv.h" -#include <drm/i915_drm.h> -#include "i915_drv.h" -#include "i915_trace.h" -#include <linux/pci.h> -#include <linux/vgaarb.h> -#include <linux/acpi.h> -#include <linux/pnp.h> -#include <linux/vga_switcheroo.h> -#include <linux/slab.h> -#include <acpi/video.h> - -#define LP_RING(d) (&((struct drm_i915_private *)(d))->ring[RCS]) - -#define BEGIN_LP_RING(n) \ - intel_ring_begin(LP_RING(dev_priv), (n)) - -#define OUT_RING(x) \ - intel_ring_emit(LP_RING(dev_priv), x) - -#define ADVANCE_LP_RING() \ - intel_ring_advance(LP_RING(dev_priv)) - -/** - * Lock test for when it's just for synchronization of ring access. - * - * In that case, we don't need to do it when GEM is initialized as nobody else - * has access to the ring. - */ -#define RING_LOCK_TEST_WITH_RETURN(dev, file) do { \ - if (LP_RING(dev->dev_private)->obj == NULL) \ - LOCK_TEST_WITH_RETURN(dev, file); \ -} while (0) - -static inline u32 -intel_read_legacy_status_page(struct drm_i915_private *dev_priv, int reg) -{ - if (I915_NEED_GFX_HWS(dev_priv->dev)) - return ioread32(dev_priv->dri1.gfx_hws_cpu_addr + reg); - else - return intel_read_status_page(LP_RING(dev_priv), reg); -} - -#define READ_HWSP(dev_priv, reg) intel_read_legacy_status_page(dev_priv, reg) -#define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX) -#define I915_BREADCRUMB_INDEX 0x21 - -void i915_update_dri1_breadcrumb(struct drm_device *dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv; - - if (dev->primary->master) { - master_priv = dev->primary->master->driver_priv; - if (master_priv->sarea_priv) - master_priv->sarea_priv->last_dispatch = - READ_BREADCRUMB(dev_priv); - } -} - -static void i915_write_hws_pga(struct drm_device *dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - u32 addr; - - addr = dev_priv->status_page_dmah->busaddr; - if (INTEL_INFO(dev)->gen >= 4) - addr |= (dev_priv->status_page_dmah->busaddr >> 28) & 0xf0; - I915_WRITE(HWS_PGA, addr); -} - -/** - * Frees the hardware status page, whether it's a physical address or a virtual - * address set up by the X Server. - */ -static void i915_free_hws(struct drm_device *dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - struct intel_ring_buffer *ring = LP_RING(dev_priv); - - if (dev_priv->status_page_dmah) { - drm_pci_free(dev, dev_priv->status_page_dmah); - dev_priv->status_page_dmah = NULL; - } - - if (ring->status_page.gfx_addr) { - ring->status_page.gfx_addr = 0; - iounmap(dev_priv->dri1.gfx_hws_cpu_addr); - } - - /* Need to rewrite hardware status page */ - I915_WRITE(HWS_PGA, 0x1ffff000); -} - -void i915_kernel_lost_context(struct drm_device * dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv; - struct intel_ring_buffer *ring = LP_RING(dev_priv); - - /* - * We should never lose context on the ring with modesetting - * as we don't expose it to userspace - */ - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return; - - ring->head = I915_READ_HEAD(ring) & HEAD_ADDR; - ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR; - ring->space = ring->head - (ring->tail + I915_RING_FREE_SPACE); - if (ring->space < 0) - ring->space += ring->size; - - if (!dev->primary->master) - return; - - master_priv = dev->primary->master->driver_priv; - if (ring->head == ring->tail && master_priv->sarea_priv) - master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY; -} - -static int i915_dma_cleanup(struct drm_device * dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - int i; - - /* Make sure interrupts are disabled here because the uninstall ioctl - * may not have been called from userspace and after dev_private - * is freed, it's too late. - */ - if (dev->irq_enabled) - drm_irq_uninstall(dev); - - mutex_lock(&dev->struct_mutex); - for (i = 0; i < I915_NUM_RINGS; i++) - intel_cleanup_ring_buffer(&dev_priv->ring[i]); - mutex_unlock(&dev->struct_mutex); - - /* Clear the HWS virtual address at teardown */ - if (I915_NEED_GFX_HWS(dev)) - i915_free_hws(dev); - - return 0; -} - -static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; - int ret; - - master_priv->sarea = drm_getsarea(dev); - if (master_priv->sarea) { - master_priv->sarea_priv = (drm_i915_sarea_t *) - ((u8 *)master_priv->sarea->handle + init->sarea_priv_offset); - } else { - DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n"); - } - - if (init->ring_size != 0) { - if (LP_RING(dev_priv)->obj != NULL) { - i915_dma_cleanup(dev); - DRM_ERROR("Client tried to initialize ringbuffer in " - "GEM mode\n"); - return -EINVAL; - } - - ret = intel_render_ring_init_dri(dev, - init->ring_start, - init->ring_size); - if (ret) { - i915_dma_cleanup(dev); - return ret; - } - } - - dev_priv->dri1.cpp = init->cpp; - dev_priv->dri1.back_offset = init->back_offset; - dev_priv->dri1.front_offset = init->front_offset; - dev_priv->dri1.current_page = 0; - if (master_priv->sarea_priv) - master_priv->sarea_priv->pf_current_page = 0; - - /* Allow hardware batchbuffers unless told otherwise. - */ - dev_priv->dri1.allow_batchbuffer = 1; - - return 0; -} - -static int i915_dma_resume(struct drm_device * dev) -{ - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - struct intel_ring_buffer *ring = LP_RING(dev_priv); - - DRM_DEBUG_DRIVER("%s\n", __func__); - - if (ring->virtual_start == NULL) { - DRM_ERROR("can not ioremap virtual address for" - " ring buffer\n"); - return -ENOMEM; - } - - /* Program Hardware Status Page */ - if (!ring->status_page.page_addr) { - DRM_ERROR("Can not find hardware status page\n"); - return -EINVAL; - } - DRM_DEBUG_DRIVER("hw status page @ %p\n", - ring->status_page.page_addr); - if (ring->status_page.gfx_addr != 0) - intel_ring_setup_status_page(ring); - else - i915_write_hws_pga(dev); - - DRM_DEBUG_DRIVER("Enabled hardware status page\n"); - - return 0; -} - -static int i915_dma_init(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_i915_init_t *init = data; - int retcode = 0; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - switch (init->func) { - case I915_INIT_DMA: - retcode = i915_initialize(dev, init); - break; - case I915_CLEANUP_DMA: - retcode = i915_dma_cleanup(dev); - break; - case I915_RESUME_DMA: - retcode = i915_dma_resume(dev); - break; - default: - retcode = -EINVAL; - break; - } - - return retcode; -} - -/* Implement basically the same security restrictions as hardware does - * for MI_BATCH_NON_SECURE. These can be made stricter at any time. - * - * Most of the calculations below involve calculating the size of a - * particular instruction. It's important to get the size right as - * that tells us where the next instruction to check is. Any illegal - * instruction detected will be given a size of zero, which is a - * signal to abort the rest of the buffer. - */ -static int validate_cmd(int cmd) -{ - switch (((cmd >> 29) & 0x7)) { - case 0x0: - switch ((cmd >> 23) & 0x3f) { - case 0x0: - return 1; /* MI_NOOP */ - case 0x4: - return 1; /* MI_FLUSH */ - default: - return 0; /* disallow everything else */ - } - break; - case 0x1: - return 0; /* reserved */ - case 0x2: - return (cmd & 0xff) + 2; /* 2d commands */ - case 0x3: - if (((cmd >> 24) & 0x1f) <= 0x18) - return 1; - - switch ((cmd >> 24) & 0x1f) { - case 0x1c: - return 1; - case 0x1d: - switch ((cmd >> 16) & 0xff) { - case 0x3: - return (cmd & 0x1f) + 2; - case 0x4: - return (cmd & 0xf) + 2; - default: - return (cmd & 0xffff) + 2; - } - case 0x1e: - if (cmd & (1 << 23)) - return (cmd & 0xffff) + 1; - else - return 1; - case 0x1f: - if ((cmd & (1 << 23)) == 0) /* inline vertices */ - return (cmd & 0x1ffff) + 2; - else if (cmd & (1 << 17)) /* indirect random */ - if ((cmd & 0xffff) == 0) - return 0; /* unknown length, too hard */ - else - return (((cmd & 0xffff) + 1) / 2) + 1; - else - return 2; /* indirect sequential */ - default: - return 0; - } - default: - return 0; - } - - return 0; -} - -static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - int i, ret; - - if ((dwords+1) * sizeof(int) >= LP_RING(dev_priv)->size - 8) - return -EINVAL; - - for (i = 0; i < dwords;) { - int sz = validate_cmd(buffer[i]); - if (sz == 0 || i + sz > dwords) - return -EINVAL; - i += sz; - } - - ret = BEGIN_LP_RING((dwords+1)&~1); - if (ret) - return ret; - - for (i = 0; i < dwords; i++) - OUT_RING(buffer[i]); - if (dwords & 1) - OUT_RING(0); - - ADVANCE_LP_RING(); - - return 0; -} - -int -i915_emit_box(struct drm_device *dev, - struct drm_clip_rect *box, - int DR1, int DR4) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - int ret; - - if (box->y2 <= box->y1 || box->x2 <= box->x1 || - box->y2 <= 0 || box->x2 <= 0) { - DRM_ERROR("Bad box %d,%d..%d,%d\n", - box->x1, box->y1, box->x2, box->y2); - return -EINVAL; - } - - if (INTEL_INFO(dev)->gen >= 4) { - ret = BEGIN_LP_RING(4); - if (ret) - return ret; - - OUT_RING(GFX_OP_DRAWRECT_INFO_I965); - OUT_RING((box->x1 & 0xffff) | (box->y1 << 16)); - OUT_RING(((box->x2 - 1) & 0xffff) | ((box->y2 - 1) << 16)); - OUT_RING(DR4); - } else { - ret = BEGIN_LP_RING(6); - if (ret) - return ret; - - OUT_RING(GFX_OP_DRAWRECT_INFO); - OUT_RING(DR1); - OUT_RING((box->x1 & 0xffff) | (box->y1 << 16)); - OUT_RING(((box->x2 - 1) & 0xffff) | ((box->y2 - 1) << 16)); - OUT_RING(DR4); - OUT_RING(0); - } - ADVANCE_LP_RING(); - - return 0; -} - -/* XXX: Emitting the counter should really be moved to part of the IRQ - * emit. For now, do it in both places: - */ - -static void i915_emit_breadcrumb(struct drm_device *dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; - - dev_priv->dri1.counter++; - if (dev_priv->dri1.counter > 0x7FFFFFFFUL) - dev_priv->dri1.counter = 0; - if (master_priv->sarea_priv) - master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter; - - if (BEGIN_LP_RING(4) == 0) { - OUT_RING(MI_STORE_DWORD_INDEX); - OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); - OUT_RING(dev_priv->dri1.counter); - OUT_RING(0); - ADVANCE_LP_RING(); - } -} - -static int i915_dispatch_cmdbuffer(struct drm_device * dev, - drm_i915_cmdbuffer_t *cmd, - struct drm_clip_rect *cliprects, - void *cmdbuf) -{ - int nbox = cmd->num_cliprects; - int i = 0, count, ret; - - if (cmd->sz & 0x3) { - DRM_ERROR("alignment"); - return -EINVAL; - } - - i915_kernel_lost_context(dev); - - count = nbox ? nbox : 1; - - for (i = 0; i < count; i++) { - if (i < nbox) { - ret = i915_emit_box(dev, &cliprects[i], - cmd->DR1, cmd->DR4); - if (ret) - return ret; - } - - ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4); - if (ret) - return ret; - } - - i915_emit_breadcrumb(dev); - return 0; -} - -static int i915_dispatch_batchbuffer(struct drm_device * dev, - drm_i915_batchbuffer_t * batch, - struct drm_clip_rect *cliprects) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - int nbox = batch->num_cliprects; - int i, count, ret; - - if ((batch->start | batch->used) & 0x7) { - DRM_ERROR("alignment"); - return -EINVAL; - } - - i915_kernel_lost_context(dev); - - count = nbox ? nbox : 1; - for (i = 0; i < count; i++) { - if (i < nbox) { - ret = i915_emit_box(dev, &cliprects[i], - batch->DR1, batch->DR4); - if (ret) - return ret; - } - - if (!IS_I830(dev) && !IS_845G(dev)) { - ret = BEGIN_LP_RING(2); - if (ret) - return ret; - - if (INTEL_INFO(dev)->gen >= 4) { - OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965); - OUT_RING(batch->start); - } else { - OUT_RING(MI_BATCH_BUFFER_START | (2 << 6)); - OUT_RING(batch->start | MI_BATCH_NON_SECURE); - } - } else { - ret = BEGIN_LP_RING(4); - if (ret) - return ret; - - OUT_RING(MI_BATCH_BUFFER); - OUT_RING(batch->start | MI_BATCH_NON_SECURE); - OUT_RING(batch->start + batch->used - 4); - OUT_RING(0); - } - ADVANCE_LP_RING(); - } - - - if (IS_G4X(dev) || IS_GEN5(dev)) { - if (BEGIN_LP_RING(2) == 0) { - OUT_RING(MI_FLUSH | MI_NO_WRITE_FLUSH | MI_INVALIDATE_ISP); - OUT_RING(MI_NOOP); - ADVANCE_LP_RING(); - } - } - - i915_emit_breadcrumb(dev); - return 0; -} - -static int i915_dispatch_flip(struct drm_device * dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv = - dev->primary->master->driver_priv; - int ret; - - if (!master_priv->sarea_priv) - return -EINVAL; - - DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n", - __func__, - dev_priv->dri1.current_page, - master_priv->sarea_priv->pf_current_page); - - i915_kernel_lost_context(dev); - - ret = BEGIN_LP_RING(10); - if (ret) - return ret; - - OUT_RING(MI_FLUSH | MI_READ_FLUSH); - OUT_RING(0); - - OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP); - OUT_RING(0); - if (dev_priv->dri1.current_page == 0) { - OUT_RING(dev_priv->dri1.back_offset); - dev_priv->dri1.current_page = 1; - } else { - OUT_RING(dev_priv->dri1.front_offset); - dev_priv->dri1.current_page = 0; - } - OUT_RING(0); - - OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP); - OUT_RING(0); - - ADVANCE_LP_RING(); - - master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter++; - - if (BEGIN_LP_RING(4) == 0) { - OUT_RING(MI_STORE_DWORD_INDEX); - OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); - OUT_RING(dev_priv->dri1.counter); - OUT_RING(0); - ADVANCE_LP_RING(); - } - - master_priv->sarea_priv->pf_current_page = dev_priv->dri1.current_page; - return 0; -} - -static int i915_quiescent(struct drm_device *dev) -{ - i915_kernel_lost_context(dev); - return intel_ring_idle(LP_RING(dev->dev_private)); -} - -static int i915_flush_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - int ret; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - RING_LOCK_TEST_WITH_RETURN(dev, file_priv); - - mutex_lock(&dev->struct_mutex); - ret = i915_quiescent(dev); - mutex_unlock(&dev->struct_mutex); - - return ret; -} - -static int i915_batchbuffer(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; - drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *) - master_priv->sarea_priv; - drm_i915_batchbuffer_t *batch = data; - int ret; - struct drm_clip_rect *cliprects = NULL; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - if (!dev_priv->dri1.allow_batchbuffer) { - DRM_ERROR("Batchbuffer ioctl disabled\n"); - return -EINVAL; - } - - DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n", - batch->start, batch->used, batch->num_cliprects); - - RING_LOCK_TEST_WITH_RETURN(dev, file_priv); - - if (batch->num_cliprects < 0) - return -EINVAL; - - if (batch->num_cliprects) { - cliprects = kcalloc(batch->num_cliprects, - sizeof(struct drm_clip_rect), - GFP_KERNEL); - if (cliprects == NULL) - return -ENOMEM; - - ret = copy_from_user(cliprects, batch->cliprects, - batch->num_cliprects * - sizeof(struct drm_clip_rect)); - if (ret != 0) { - ret = -EFAULT; - goto fail_free; - } - } - - mutex_lock(&dev->struct_mutex); - ret = i915_dispatch_batchbuffer(dev, batch, cliprects); - mutex_unlock(&dev->struct_mutex); - - if (sarea_priv) - sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); - -fail_free: - kfree(cliprects); - - return ret; -} - -static int i915_cmdbuffer(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; - drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *) - master_priv->sarea_priv; - drm_i915_cmdbuffer_t *cmdbuf = data; - struct drm_clip_rect *cliprects = NULL; - void *batch_data; - int ret; - - DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n", - cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects); - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - RING_LOCK_TEST_WITH_RETURN(dev, file_priv); - - if (cmdbuf->num_cliprects < 0) - return -EINVAL; - - batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL); - if (batch_data == NULL) - return -ENOMEM; - - ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz); - if (ret != 0) { - ret = -EFAULT; - goto fail_batch_free; - } - - if (cmdbuf->num_cliprects) { - cliprects = kcalloc(cmdbuf->num_cliprects, - sizeof(struct drm_clip_rect), GFP_KERNEL); - if (cliprects == NULL) { - ret = -ENOMEM; - goto fail_batch_free; - } - - ret = copy_from_user(cliprects, cmdbuf->cliprects, - cmdbuf->num_cliprects * - sizeof(struct drm_clip_rect)); - if (ret != 0) { - ret = -EFAULT; - goto fail_clip_free; - } - } - - mutex_lock(&dev->struct_mutex); - ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data); - mutex_unlock(&dev->struct_mutex); - if (ret) { - DRM_ERROR("i915_dispatch_cmdbuffer failed\n"); - goto fail_clip_free; - } - - if (sarea_priv) - sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); - -fail_clip_free: - kfree(cliprects); -fail_batch_free: - kfree(batch_data); - - return ret; -} - -static int i915_emit_irq(struct drm_device * dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; - - i915_kernel_lost_context(dev); - - DRM_DEBUG_DRIVER("\n"); - - dev_priv->dri1.counter++; - if (dev_priv->dri1.counter > 0x7FFFFFFFUL) - dev_priv->dri1.counter = 1; - if (master_priv->sarea_priv) - master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter; - - if (BEGIN_LP_RING(4) == 0) { - OUT_RING(MI_STORE_DWORD_INDEX); - OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); - OUT_RING(dev_priv->dri1.counter); - OUT_RING(MI_USER_INTERRUPT); - ADVANCE_LP_RING(); - } - - return dev_priv->dri1.counter; -} - -static int i915_wait_irq(struct drm_device * dev, int irq_nr) -{ - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; - int ret = 0; - struct intel_ring_buffer *ring = LP_RING(dev_priv); - - DRM_DEBUG_DRIVER("irq_nr=%d breadcrumb=%d\n", irq_nr, - READ_BREADCRUMB(dev_priv)); - - if (READ_BREADCRUMB(dev_priv) >= irq_nr) { - if (master_priv->sarea_priv) - master_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); - return 0; - } - - if (master_priv->sarea_priv) - master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; - - if (ring->irq_get(ring)) { - DRM_WAIT_ON(ret, ring->irq_queue, 3 * DRM_HZ, - READ_BREADCRUMB(dev_priv) >= irq_nr); - ring->irq_put(ring); - } else if (wait_for(READ_BREADCRUMB(dev_priv) >= irq_nr, 3000)) - ret = -EBUSY; - - if (ret == -EBUSY) { - DRM_ERROR("EBUSY -- rec: %d emitted: %d\n", - READ_BREADCRUMB(dev_priv), (int)dev_priv->dri1.counter); - } - - return ret; -} - -/* Needs the lock as it touches the ring. - */ -static int i915_irq_emit(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_irq_emit_t *emit = data; - int result; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - if (!dev_priv || !LP_RING(dev_priv)->virtual_start) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - RING_LOCK_TEST_WITH_RETURN(dev, file_priv); - - mutex_lock(&dev->struct_mutex); - result = i915_emit_irq(dev); - mutex_unlock(&dev->struct_mutex); - - if (DRM_COPY_TO_USER(emit->irq_seq, &result, sizeof(int))) { - DRM_ERROR("copy_to_user\n"); - return -EFAULT; - } - - return 0; -} - -/* Doesn't need the hardware lock. - */ -static int i915_irq_wait(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_irq_wait_t *irqwait = data; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - return i915_wait_irq(dev, irqwait->irq_seq); -} - -static int i915_vblank_pipe_get(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_vblank_pipe_t *pipe = data; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - pipe->pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B; - - return 0; -} - -/** - * Schedule buffer swap at given vertical blank. - */ -static int i915_vblank_swap(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - /* The delayed swap mechanism was fundamentally racy, and has been - * removed. The model was that the client requested a delayed flip/swap - * from the kernel, then waited for vblank before continuing to perform - * rendering. The problem was that the kernel might wake the client - * up before it dispatched the vblank swap (since the lock has to be - * held while touching the ringbuffer), in which case the client would - * clear and start the next frame before the swap occurred, and - * flicker would occur in addition to likely missing the vblank. - * - * In the absence of this ioctl, userland falls back to a correct path - * of waiting for a vblank, then dispatching the swap on its own. - * Context switching to userland and back is plenty fast enough for - * meeting the requirements of vblank swapping. - */ - return -EINVAL; -} - -static int i915_flip_bufs(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - int ret; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - DRM_DEBUG_DRIVER("%s\n", __func__); - - RING_LOCK_TEST_WITH_RETURN(dev, file_priv); - - mutex_lock(&dev->struct_mutex); - ret = i915_dispatch_flip(dev); - mutex_unlock(&dev->struct_mutex); - - return ret; -} - -static int i915_getparam(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_getparam_t *param = data; - int value; - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - switch (param->param) { - case I915_PARAM_IRQ_ACTIVE: - value = dev->pdev->irq ? 1 : 0; - break; - case I915_PARAM_ALLOW_BATCHBUFFER: - value = dev_priv->dri1.allow_batchbuffer ? 1 : 0; - break; - case I915_PARAM_LAST_DISPATCH: - value = READ_BREADCRUMB(dev_priv); - break; - case I915_PARAM_CHIPSET_ID: - value = dev->pci_device; - break; - case I915_PARAM_HAS_GEM: - value = 1; - break; - case I915_PARAM_NUM_FENCES_AVAIL: - value = dev_priv->num_fence_regs - dev_priv->fence_reg_start; - break; - case I915_PARAM_HAS_OVERLAY: - value = dev_priv->overlay ? 1 : 0; - break; - case I915_PARAM_HAS_PAGEFLIPPING: - value = 1; - break; - case I915_PARAM_HAS_EXECBUF2: - /* depends on GEM */ - value = 1; - break; - case I915_PARAM_HAS_BSD: - value = intel_ring_initialized(&dev_priv->ring[VCS]); - break; - case I915_PARAM_HAS_BLT: - value = intel_ring_initialized(&dev_priv->ring[BCS]); - break; - case I915_PARAM_HAS_VEBOX: - value = intel_ring_initialized(&dev_priv->ring[VECS]); - break; - case I915_PARAM_HAS_RELAXED_FENCING: - value = 1; - break; - case I915_PARAM_HAS_COHERENT_RINGS: - value = 1; - break; - case I915_PARAM_HAS_EXEC_CONSTANTS: - value = INTEL_INFO(dev)->gen >= 4; - break; - case I915_PARAM_HAS_RELAXED_DELTA: - value = 1; - break; - case I915_PARAM_HAS_GEN7_SOL_RESET: - value = 1; - break; - case I915_PARAM_HAS_LLC: - value = HAS_LLC(dev); - break; - case I915_PARAM_HAS_ALIASING_PPGTT: - value = dev_priv->mm.aliasing_ppgtt ? 1 : 0; - break; - case I915_PARAM_HAS_WAIT_TIMEOUT: - value = 1; - break; - case I915_PARAM_HAS_SEMAPHORES: - value = i915_semaphore_is_enabled(dev); - break; - case I915_PARAM_HAS_PRIME_VMAP_FLUSH: - value = 1; - break; - case I915_PARAM_HAS_SECURE_BATCHES: - value = capable(CAP_SYS_ADMIN); - break; - case I915_PARAM_HAS_PINNED_BATCHES: - value = 1; - break; - case I915_PARAM_HAS_EXEC_NO_RELOC: - value = 1; - break; - case I915_PARAM_HAS_EXEC_HANDLE_LUT: - value = 1; - break; - default: - DRM_DEBUG("Unknown parameter %d\n", param->param); - return -EINVAL; - } - - if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) { - DRM_ERROR("DRM_COPY_TO_USER failed\n"); - return -EFAULT; - } - - return 0; -} - -static int i915_setparam(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_setparam_t *param = data; - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - switch (param->param) { - case I915_SETPARAM_USE_MI_BATCHBUFFER_START: - break; - case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY: - break; - case I915_SETPARAM_ALLOW_BATCHBUFFER: - dev_priv->dri1.allow_batchbuffer = param->value ? 1 : 0; - break; - case I915_SETPARAM_NUM_USED_FENCES: - if (param->value > dev_priv->num_fence_regs || - param->value < 0) - return -EINVAL; - /* Userspace can use first N regs */ - dev_priv->fence_reg_start = param->value; - break; - default: - DRM_DEBUG_DRIVER("unknown parameter %d\n", - param->param); - return -EINVAL; - } - - return 0; -} - -static int i915_set_status_page(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_hws_addr_t *hws = data; - struct intel_ring_buffer *ring; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - if (!I915_NEED_GFX_HWS(dev)) - return -EINVAL; - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - WARN(1, "tried to set status page when mode setting active\n"); - return 0; - } - - DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr); - - ring = LP_RING(dev_priv); - ring->status_page.gfx_addr = hws->addr & (0x1ffff<<12); - - dev_priv->dri1.gfx_hws_cpu_addr = - ioremap_wc(dev_priv->gtt.mappable_base + hws->addr, 4096); - if (dev_priv->dri1.gfx_hws_cpu_addr == NULL) { - i915_dma_cleanup(dev); - ring->status_page.gfx_addr = 0; - DRM_ERROR("can not ioremap virtual address for" - " G33 hw status page\n"); - return -ENOMEM; - } - - memset_io(dev_priv->dri1.gfx_hws_cpu_addr, 0, PAGE_SIZE); - I915_WRITE(HWS_PGA, ring->status_page.gfx_addr); - - DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n", - ring->status_page.gfx_addr); - DRM_DEBUG_DRIVER("load hws at %p\n", - ring->status_page.page_addr); - return 0; -} - -static int i915_get_bridge_dev(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - - dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0)); - if (!dev_priv->bridge_dev) { - DRM_ERROR("bridge device not found\n"); - return -1; - } - return 0; -} - -#define MCHBAR_I915 0x44 -#define MCHBAR_I965 0x48 -#define MCHBAR_SIZE (4*4096) - -#define DEVEN_REG 0x54 -#define DEVEN_MCHBAR_EN (1 << 28) - -/* Allocate space for the MCH regs if needed, return nonzero on error */ -static int -intel_alloc_mchbar_resource(struct drm_device *dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - int reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915; - u32 temp_lo, temp_hi = 0; - u64 mchbar_addr; - int ret; - - if (INTEL_INFO(dev)->gen >= 4) - pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi); - pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo); - mchbar_addr = ((u64)temp_hi << 32) | temp_lo; - - /* If ACPI doesn't have it, assume we need to allocate it ourselves */ -#ifdef CONFIG_PNP - if (mchbar_addr && - pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) - return 0; -#endif - - /* Get some space for it */ - dev_priv->mch_res.name = "i915 MCHBAR"; - dev_priv->mch_res.flags = IORESOURCE_MEM; - ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus, - &dev_priv->mch_res, - MCHBAR_SIZE, MCHBAR_SIZE, - PCIBIOS_MIN_MEM, - 0, pcibios_align_resource, - dev_priv->bridge_dev); - if (ret) { - DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret); - dev_priv->mch_res.start = 0; - return ret; - } - - if (INTEL_INFO(dev)->gen >= 4) - pci_write_config_dword(dev_priv->bridge_dev, reg + 4, - upper_32_bits(dev_priv->mch_res.start)); - - pci_write_config_dword(dev_priv->bridge_dev, reg, - lower_32_bits(dev_priv->mch_res.start)); - return 0; -} - -/* Setup MCHBAR if possible, return true if we should disable it again */ -static void -intel_setup_mchbar(struct drm_device *dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915; - u32 temp; - bool enabled; - - dev_priv->mchbar_need_disable = false; - - if (IS_I915G(dev) || IS_I915GM(dev)) { - pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp); - enabled = !!(temp & DEVEN_MCHBAR_EN); - } else { - pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); - enabled = temp & 1; - } - - /* If it's already enabled, don't have to do anything */ - if (enabled) - return; - - if (intel_alloc_mchbar_resource(dev)) - return; - - dev_priv->mchbar_need_disable = true; - - /* Space is allocated or reserved, so enable it. */ - if (IS_I915G(dev) || IS_I915GM(dev)) { - pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, - temp | DEVEN_MCHBAR_EN); - } else { - pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); - pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1); - } -} - -static void -intel_teardown_mchbar(struct drm_device *dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915; - u32 temp; - - if (dev_priv->mchbar_need_disable) { - if (IS_I915G(dev) || IS_I915GM(dev)) { - pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp); - temp &= ~DEVEN_MCHBAR_EN; - pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp); - } else { - pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); - temp &= ~1; - pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp); - } - } - - if (dev_priv->mch_res.start) - release_resource(&dev_priv->mch_res); -} - -/* true = enable decode, false = disable decoder */ -static unsigned int i915_vga_set_decode(void *cookie, bool state) -{ - struct drm_device *dev = cookie; - - intel_modeset_vga_set_state(dev, state); - if (state) - return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM | - VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; - else - return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; -} - -static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state) -{ - struct drm_device *dev = pci_get_drvdata(pdev); - pm_message_t pmm = { .event = PM_EVENT_SUSPEND }; - if (state == VGA_SWITCHEROO_ON) { - pr_info("switched on\n"); - dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; - /* i915 resume handler doesn't set to D0 */ - pci_set_power_state(dev->pdev, PCI_D0); - i915_resume(dev); - dev->switch_power_state = DRM_SWITCH_POWER_ON; - } else { - pr_err("switched off\n"); - dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; - i915_suspend(dev, pmm); - dev->switch_power_state = DRM_SWITCH_POWER_OFF; - } -} - -static bool i915_switcheroo_can_switch(struct pci_dev *pdev) -{ - struct drm_device *dev = pci_get_drvdata(pdev); - bool can_switch; - - spin_lock(&dev->count_lock); - can_switch = (dev->open_count == 0); - spin_unlock(&dev->count_lock); - return can_switch; -} - -static const struct vga_switcheroo_client_ops i915_switcheroo_ops = { - .set_gpu_state = i915_switcheroo_set_state, - .reprobe = NULL, - .can_switch = i915_switcheroo_can_switch, -}; - -static int i915_load_modeset_init(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - int ret; - - ret = intel_parse_bios(dev); - if (ret) - DRM_INFO("failed to find VBIOS tables\n"); - - /* If we have > 1 VGA cards, then we need to arbitrate access - * to the common VGA resources. - * - * If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA), - * then we do not take part in VGA arbitration and the - * vga_client_register() fails with -ENODEV. - */ - ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode); - if (ret && ret != -ENODEV) - goto out; - - intel_register_dsm_handler(); - - ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops); - if (ret) - goto cleanup_vga_client; - - /* Initialise stolen first so that we may reserve preallocated - * objects for the BIOS to KMS transition. - */ - ret = i915_gem_init_stolen(dev); - if (ret) - goto cleanup_vga_switcheroo; - - ret = drm_irq_install(dev); - if (ret) - goto cleanup_gem_stolen; - - /* Important: The output setup functions called by modeset_init need - * working irqs for e.g. gmbus and dp aux transfers. */ - intel_modeset_init(dev); - - ret = i915_gem_init(dev); - if (ret) - goto cleanup_irq; - - INIT_WORK(&dev_priv->console_resume_work, intel_console_resume); - - intel_modeset_gem_init(dev); - - /* Always safe in the mode setting case. */ - /* FIXME: do pre/post-mode set stuff in core KMS code */ - dev->vblank_disable_allowed = 1; - if (INTEL_INFO(dev)->num_pipes == 0) { - dev_priv->mm.suspended = 0; - return 0; - } - - ret = intel_fbdev_init(dev); - if (ret) - goto cleanup_gem; - - /* Only enable hotplug handling once the fbdev is fully set up. */ - intel_hpd_init(dev); - - /* - * Some ports require correctly set-up hpd registers for detection to - * work properly (leading to ghost connected connector status), e.g. VGA - * on gm45. Hence we can only set up the initial fbdev config after hpd - * irqs are fully enabled. Now we should scan for the initial config - * only once hotplug handling is enabled, but due to screwed-up locking - * around kms/fbdev init we can't protect the fdbev initial config - * scanning against hotplug events. Hence do this first and ignore the - * tiny window where we will loose hotplug notifactions. - */ - intel_fbdev_initial_config(dev); - - /* Only enable hotplug handling once the fbdev is fully set up. */ - dev_priv->enable_hotplug_processing = true; - - drm_kms_helper_poll_init(dev); - - /* We're off and running w/KMS */ - dev_priv->mm.suspended = 0; - - return 0; - -cleanup_gem: - mutex_lock(&dev->struct_mutex); - i915_gem_cleanup_ringbuffer(dev); - i915_gem_context_fini(dev); - mutex_unlock(&dev->struct_mutex); - i915_gem_cleanup_aliasing_ppgtt(dev); - drm_mm_takedown(&dev_priv->mm.gtt_space); -cleanup_irq: - drm_irq_uninstall(dev); -cleanup_gem_stolen: - i915_gem_cleanup_stolen(dev); -cleanup_vga_switcheroo: - vga_switcheroo_unregister_client(dev->pdev); -cleanup_vga_client: - vga_client_register(dev->pdev, NULL, NULL, NULL); -out: - return ret; -} - -int i915_master_create(struct drm_device *dev, struct drm_master *master) -{ - struct drm_i915_master_private *master_priv; - - master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL); - if (!master_priv) - return -ENOMEM; - - master->driver_priv = master_priv; - return 0; -} - -void i915_master_destroy(struct drm_device *dev, struct drm_master *master) -{ - struct drm_i915_master_private *master_priv = master->driver_priv; - - if (!master_priv) - return; - - kfree(master_priv); - - master->driver_priv = NULL; -} - -static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv) -{ - struct apertures_struct *ap; - struct pci_dev *pdev = dev_priv->dev->pdev; - bool primary; - - ap = alloc_apertures(1); - if (!ap) - return; - - ap->ranges[0].base = dev_priv->gtt.mappable_base; - ap->ranges[0].size = dev_priv->gtt.mappable_end; - - primary = - pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW; - - remove_conflicting_framebuffers(ap, "inteldrmfb", primary); - - kfree(ap); -} - -static void i915_dump_device_info(struct drm_i915_private *dev_priv) -{ - const struct intel_device_info *info = dev_priv->info; - -#define PRINT_S(name) "%s" -#define SEP_EMPTY -#define PRINT_FLAG(name) info->name ? #name "," : "" -#define SEP_COMMA , - DRM_DEBUG_DRIVER("i915 device info: gen=%i, pciid=0x%04x flags=" - DEV_INFO_FOR_EACH_FLAG(PRINT_S, SEP_EMPTY), - info->gen, - dev_priv->dev->pdev->device, - DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG, SEP_COMMA)); -#undef PRINT_S -#undef SEP_EMPTY -#undef PRINT_FLAG -#undef SEP_COMMA -} - -/** - * intel_early_sanitize_regs - clean up BIOS state - * @dev: DRM device - * - * This function must be called before we do any I915_READ or I915_WRITE. Its - * purpose is to clean up any state left by the BIOS that may affect us when - * reading and/or writing registers. - */ -static void intel_early_sanitize_regs(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - - if (HAS_FPGA_DBG_UNCLAIMED(dev)) - I915_WRITE_NOTRACE(FPGA_DBG, FPGA_DBG_RM_NOCLAIM); -} - -/** - * i915_driver_load - setup chip and create an initial config - * @dev: DRM device - * @flags: startup flags - * - * The driver load routine has to do several things: - * - drive output discovery via intel_modeset_init() - * - initialize the memory manager - * - allocate initial config memory - * - setup the DRM framebuffer with the allocated memory - */ -int i915_driver_load(struct drm_device *dev, unsigned long flags) -{ - struct drm_i915_private *dev_priv; - struct intel_device_info *info; - int ret = 0, mmio_bar, mmio_size; - uint32_t aperture_size; - - info = (struct intel_device_info *) flags; - - /* Refuse to load on gen6+ without kms enabled. */ - if (info->gen >= 6 && !drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - /* i915 has 4 more counters */ - dev->counters += 4; - dev->types[6] = _DRM_STAT_IRQ; - dev->types[7] = _DRM_STAT_PRIMARY; - dev->types[8] = _DRM_STAT_SECONDARY; - dev->types[9] = _DRM_STAT_DMA; - - dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL); - if (dev_priv == NULL) - return -ENOMEM; - - dev->dev_private = (void *)dev_priv; - dev_priv->dev = dev; - dev_priv->info = info; - - i915_dump_device_info(dev_priv); - - if (i915_get_bridge_dev(dev)) { - ret = -EIO; - goto free_priv; - } - - mmio_bar = IS_GEN2(dev) ? 1 : 0; - /* Before gen4, the registers and the GTT are behind different BARs. - * However, from gen4 onwards, the registers and the GTT are shared - * in the same BAR, so we want to restrict this ioremap from - * clobbering the GTT which we want ioremap_wc instead. Fortunately, - * the register BAR remains the same size for all the earlier - * generations up to Ironlake. - */ - if (info->gen < 5) - mmio_size = 512*1024; - else - mmio_size = 2*1024*1024; - - dev_priv->regs = pci_iomap(dev->pdev, mmio_bar, mmio_size); - if (!dev_priv->regs) { - DRM_ERROR("failed to map registers\n"); - ret = -EIO; - goto put_bridge; - } - - intel_early_sanitize_regs(dev); - - ret = i915_gem_gtt_init(dev); - if (ret) - goto put_bridge; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - i915_kick_out_firmware_fb(dev_priv); - - pci_set_master(dev->pdev); - - /* overlay on gen2 is broken and can't address above 1G */ - if (IS_GEN2(dev)) - dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(30)); - - /* 965GM sometimes incorrectly writes to hardware status page (HWS) - * using 32bit addressing, overwriting memory if HWS is located - * above 4GB. - * - * The documentation also mentions an issue with undefined - * behaviour if any general state is accessed within a page above 4GB, - * which also needs to be handled carefully. - */ - if (IS_BROADWATER(dev) || IS_CRESTLINE(dev)) - dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(32)); - - aperture_size = dev_priv->gtt.mappable_end; - - dev_priv->gtt.mappable = - io_mapping_create_wc(dev_priv->gtt.mappable_base, - aperture_size); - if (dev_priv->gtt.mappable == NULL) { - ret = -EIO; - goto out_rmmap; - } - - dev_priv->mm.gtt_mtrr = arch_phys_wc_add(dev_priv->gtt.mappable_base, - aperture_size); - - /* The i915 workqueue is primarily used for batched retirement of - * requests (and thus managing bo) once the task has been completed - * by the GPU. i915_gem_retire_requests() is called directly when we - * need high-priority retirement, such as waiting for an explicit - * bo. - * - * It is also used for periodic low-priority events, such as - * idle-timers and recording error state. - * - * All tasks on the workqueue are expected to acquire the dev mutex - * so there is no point in running more than one instance of the - * workqueue at any time. Use an ordered one. - */ - dev_priv->wq = alloc_ordered_workqueue("i915", 0); - if (dev_priv->wq == NULL) { - DRM_ERROR("Failed to create our workqueue.\n"); - ret = -ENOMEM; - goto out_mtrrfree; - } - - /* This must be called before any calls to HAS_PCH_* */ - intel_detect_pch(dev); - - intel_irq_init(dev); - intel_gt_init(dev); - - /* Try to make sure MCHBAR is enabled before poking at it */ - intel_setup_mchbar(dev); - intel_setup_gmbus(dev); - intel_opregion_setup(dev); - - intel_setup_bios(dev); - - i915_gem_load(dev); - - /* On the 945G/GM, the chipset reports the MSI capability on the - * integrated graphics even though the support isn't actually there - * according to the published specs. It doesn't appear to function - * correctly in testing on 945G. - * This may be a side effect of MSI having been made available for PEG - * and the registers being closely associated. - * - * According to chipset errata, on the 965GM, MSI interrupts may - * be lost or delayed, but we use them anyways to avoid - * stuck interrupts on some machines. - */ - if (!IS_I945G(dev) && !IS_I945GM(dev)) - pci_enable_msi(dev->pdev); - - spin_lock_init(&dev_priv->irq_lock); - spin_lock_init(&dev_priv->gpu_error.lock); - spin_lock_init(&dev_priv->rps.lock); - spin_lock_init(&dev_priv->backlight.lock); - mutex_init(&dev_priv->dpio_lock); - - mutex_init(&dev_priv->rps.hw_lock); - mutex_init(&dev_priv->modeset_restore_lock); - - dev_priv->num_plane = 1; - if (IS_VALLEYVIEW(dev)) - dev_priv->num_plane = 2; - - if (INTEL_INFO(dev)->num_pipes) { - ret = drm_vblank_init(dev, INTEL_INFO(dev)->num_pipes); - if (ret) - goto out_gem_unload; - } - - /* Start out suspended */ - dev_priv->mm.suspended = 1; - - if (HAS_POWER_WELL(dev)) - i915_init_power_well(dev); - - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - ret = i915_load_modeset_init(dev); - if (ret < 0) { - DRM_ERROR("failed to init modeset\n"); - goto out_gem_unload; - } - } - - i915_setup_sysfs(dev); - - if (INTEL_INFO(dev)->num_pipes) { - /* Must be done after probing outputs */ - intel_opregion_init(dev); - acpi_video_register(); - } - - if (IS_GEN5(dev)) - intel_gpu_ips_init(dev_priv); - - return 0; - -out_gem_unload: - if (dev_priv->mm.inactive_shrinker.shrink) - unregister_shrinker(&dev_priv->mm.inactive_shrinker); - - if (dev->pdev->msi_enabled) - pci_disable_msi(dev->pdev); - - intel_teardown_gmbus(dev); - intel_teardown_mchbar(dev); - destroy_workqueue(dev_priv->wq); -out_mtrrfree: - arch_phys_wc_del(dev_priv->mm.gtt_mtrr); - io_mapping_free(dev_priv->gtt.mappable); - dev_priv->gtt.gtt_remove(dev); -out_rmmap: - pci_iounmap(dev->pdev, dev_priv->regs); -put_bridge: - pci_dev_put(dev_priv->bridge_dev); -free_priv: - kfree(dev_priv); - return ret; -} - -int i915_driver_unload(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - int ret; - - intel_gpu_ips_teardown(); - - if (HAS_POWER_WELL(dev)) - i915_remove_power_well(dev); - - i915_teardown_sysfs(dev); - - if (dev_priv->mm.inactive_shrinker.shrink) - unregister_shrinker(&dev_priv->mm.inactive_shrinker); - - mutex_lock(&dev->struct_mutex); - ret = i915_gpu_idle(dev); - if (ret) - DRM_ERROR("failed to idle hardware: %d\n", ret); - i915_gem_retire_requests(dev); - mutex_unlock(&dev->struct_mutex); - - /* Cancel the retire work handler, which should be idle now. */ - cancel_delayed_work_sync(&dev_priv->mm.retire_work); - - io_mapping_free(dev_priv->gtt.mappable); - arch_phys_wc_del(dev_priv->mm.gtt_mtrr); - - acpi_video_unregister(); - - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - intel_fbdev_fini(dev); - intel_modeset_cleanup(dev); - cancel_work_sync(&dev_priv->console_resume_work); - - /* - * free the memory space allocated for the child device - * config parsed from VBT - */ - if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) { - kfree(dev_priv->vbt.child_dev); - dev_priv->vbt.child_dev = NULL; - dev_priv->vbt.child_dev_num = 0; - } - - vga_switcheroo_unregister_client(dev->pdev); - vga_client_register(dev->pdev, NULL, NULL, NULL); - } - - /* Free error state after interrupts are fully disabled. */ - del_timer_sync(&dev_priv->gpu_error.hangcheck_timer); - cancel_work_sync(&dev_priv->gpu_error.work); - i915_destroy_error_state(dev); - - if (dev->pdev->msi_enabled) - pci_disable_msi(dev->pdev); - - intel_opregion_fini(dev); - - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - /* Flush any outstanding unpin_work. */ - flush_workqueue(dev_priv->wq); - - mutex_lock(&dev->struct_mutex); - i915_gem_free_all_phys_object(dev); - i915_gem_cleanup_ringbuffer(dev); - i915_gem_context_fini(dev); - mutex_unlock(&dev->struct_mutex); - i915_gem_cleanup_aliasing_ppgtt(dev); - i915_gem_cleanup_stolen(dev); - - if (!I915_NEED_GFX_HWS(dev)) - i915_free_hws(dev); - } - - drm_mm_takedown(&dev_priv->mm.gtt_space); - if (dev_priv->regs != NULL) - pci_iounmap(dev->pdev, dev_priv->regs); - - intel_teardown_gmbus(dev); - intel_teardown_mchbar(dev); - - destroy_workqueue(dev_priv->wq); - pm_qos_remove_request(&dev_priv->pm_qos); - - dev_priv->gtt.gtt_remove(dev); - - if (dev_priv->slab) - kmem_cache_destroy(dev_priv->slab); - - pci_dev_put(dev_priv->bridge_dev); - kfree(dev->dev_private); - - return 0; -} - -int i915_driver_open(struct drm_device *dev, struct drm_file *file) -{ - struct drm_i915_file_private *file_priv; - - DRM_DEBUG_DRIVER("\n"); - file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); - if (!file_priv) - return -ENOMEM; - - file->driver_priv = file_priv; - - spin_lock_init(&file_priv->mm.lock); - INIT_LIST_HEAD(&file_priv->mm.request_list); - - idr_init(&file_priv->context_idr); - - return 0; -} - -/** - * i915_driver_lastclose - clean up after all DRM clients have exited - * @dev: DRM device - * - * Take care of cleaning up after all DRM clients have exited. In the - * mode setting case, we want to restore the kernel's initial mode (just - * in case the last client left us in a bad state). - * - * Additionally, in the non-mode setting case, we'll tear down the GTT - * and DMA structures, since the kernel won't be using them, and clea - * up any GEM state. - */ -void i915_driver_lastclose(struct drm_device * dev) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - - /* On gen6+ we refuse to init without kms enabled, but then the drm core - * goes right around and calls lastclose. Check for this and don't clean - * up anything. */ - if (!dev_priv) - return; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - intel_fb_restore_mode(dev); - vga_switcheroo_process_delayed_switch(); - return; - } - - i915_gem_lastclose(dev); - - i915_dma_cleanup(dev); -} - -void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv) -{ - i915_gem_context_close(dev, file_priv); - i915_gem_release(dev, file_priv); -} - -void i915_driver_postclose(struct drm_device *dev, struct drm_file *file) -{ - struct drm_i915_file_private *file_priv = file->driver_priv; - - kfree(file_priv); -} - -struct drm_ioctl_desc i915_ioctls[] = { - DRM_IOCTL_DEF_DRV(I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(I915_FLUSH, i915_flush_ioctl, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_FLIP, i915_flip_bufs, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, intel_sprite_get_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_UNLOCKED), -}; - -int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls); - -/* - * This is really ugly: Because old userspace abused the linux agp interface to - * manage the gtt, we need to claim that all intel devices are agp. For - * otherwise the drm core refuses to initialize the agp support code. - */ -int i915_driver_device_is_agp(struct drm_device * dev) -{ - return 1; -} |