From 881ee9889c8b98671c5491e43666bf5d4f78a180 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Sun, 2 Nov 2008 23:08:44 -0800 Subject: i915: Save/restore MCHBAR_RENDER_STANDBY on GM965/GM45 This register is set by the 2D driver to prevent lockups, and so it needs to be preserved across suspend/resume too. This makes my X200s work. Signed-off-by: Keith Packard Signed-off-by: Eric Anholt Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/i915_reg.h | 3 +++ drivers/gpu/drm/i915/i915_suspend.c | 9 +++++++++ 3 files changed, 13 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 572dcd0e3e0..be56b0ba88c 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -157,6 +157,7 @@ typedef struct drm_i915_private { u32 saveDSPACNTR; u32 saveDSPBCNTR; u32 saveDSPARB; + u32 saveRENDERSTANDBY; u32 savePIPEACONF; u32 savePIPEBCONF; u32 savePIPEASRC; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 5c2d9f206d0..0e476eba36e 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -527,6 +527,9 @@ #define C0DRB3 0x10206 #define C1DRB3 0x10606 +/** GM965 GM45 render standby register */ +#define MCHBAR_RENDER_STANDBY 0x111B8 + /* * Overlay regs */ diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c index 603fe742ccd..5ddc6e595c0 100644 --- a/drivers/gpu/drm/i915/i915_suspend.c +++ b/drivers/gpu/drm/i915/i915_suspend.c @@ -240,6 +240,10 @@ int i915_save_state(struct drm_device *dev) pci_read_config_byte(dev->pdev, LBB, &dev_priv->saveLBB); + /* Render Standby */ + if (IS_I965G(dev) && IS_MOBILE(dev)) + dev_priv->saveRENDERSTANDBY = I915_READ(MCHBAR_RENDER_STANDBY); + /* Display arbitration control */ dev_priv->saveDSPARB = I915_READ(DSPARB); @@ -365,6 +369,11 @@ int i915_restore_state(struct drm_device *dev) pci_write_config_byte(dev->pdev, LBB, dev_priv->saveLBB); + /* Render Standby */ + if (IS_I965G(dev) && IS_MOBILE(dev)) + I915_WRITE(MCHBAR_RENDER_STANDBY, dev_priv->saveRENDERSTANDBY); + + /* Display arbitration */ I915_WRITE(DSPARB, dev_priv->saveDSPARB); /* Pipe & plane A info */ -- cgit v1.2.3 From ad42ca8f4490de06462aee234ea0083cbd8b46aa Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Sun, 2 Nov 2008 23:38:20 -0800 Subject: i915: Clean up sarea pointers on leavevt This corresponds to the setup of the sarea pointers in DMA initialization, though neither is exactly the point at which the sarea is set up or torn down. Signed-off-by: Keith Packard Signed-off-by: Eric Anholt Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/i915_dma.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 256e22963ae..79944460d70 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -154,6 +154,9 @@ static int i915_dma_cleanup(struct drm_device * dev) if (I915_NEED_GFX_HWS(dev)) i915_free_hws(dev); + dev_priv->sarea = NULL; + dev_priv->sarea_priv = NULL; + return 0; } -- cgit v1.2.3 From 6a47baa6ce7e6fb5fed8d1fd0af36a96a4ad133f Mon Sep 17 00:00:00 2001 From: Owen Taylor Date: Mon, 3 Nov 2008 14:38:17 -0800 Subject: i915: Don't attempt to short-circuit object_wait_rendering by checking domains. This could return early when reading after writing a buffer, if somebody had already put it on the flushing list (write domains are 0, but still active), leading to glReadPixels failure. Signed-off-by: Eric Anholt Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/i915_gem.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index b0ec73fa6a9..6b4a2bd2064 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1455,11 +1455,9 @@ i915_gem_object_set_domain_range(struct drm_gem_object *obj, read_domains, write_domain); /* Wait on any GPU rendering to the object to be flushed. */ - if (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) { - ret = i915_gem_object_wait_rendering(obj); - if (ret) - return ret; - } + ret = i915_gem_object_wait_rendering(obj); + if (ret) + return ret; if (obj_priv->page_cpu_valid == NULL) { obj_priv->page_cpu_valid = drm_calloc(1, obj->size / PAGE_SIZE, -- cgit v1.2.3 From d3e74d0237b102d34979015fbf6df02ca4413074 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Mon, 3 Nov 2008 14:46:17 -0800 Subject: i915: Don't whine when pci_enable_msi() fails. This probably just means the chipset doesn't support MSI, which is fine. Signed-off-by: Eric Anholt Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/i915_dma.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 79944460d70..9d4278be0ca 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -852,8 +852,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) * be lost or delayed */ if (!IS_I945G(dev) && !IS_I945GM(dev) && !IS_I965GM(dev)) - if (pci_enable_msi(dev->pdev)) - DRM_ERROR("failed to enable MSI\n"); + pci_enable_msi(dev->pdev); intel_opregion_init(dev); -- cgit v1.2.3 From bd95e0a4a6bb9485fe35dda62719663f6ceabae1 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 4 Nov 2008 12:01:24 -0800 Subject: i915: Remove racy delayed vblank swap ioctl. When userland detected that this ioctl was supported (by version number check), it used it in a racy way -- dispatch delayed swap, wait for vblank, continue rendering. As there was no mechanism for it to wait for the swap to finish, sometimes it would render before the swap and garbage would be displayed on the screen. By removing the ioctl and returning -EINVAL, userland returns to its previous, correct rendering path of waiting for a vblank then dispatching a swap. The only path that could have used this ioctl correctly was page flipping, which relied on only one client running and emitting wait-for-vblank-before-rendering in the command stream. That path also falls back correctly, at the performance cost of not being able to queue up rendering before the flip occurs. Signed-off-by: Eric Anholt Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/i915_drv.h | 15 -- drivers/gpu/drm/i915/i915_irq.c | 377 ++-------------------------------------- 2 files changed, 14 insertions(+), 378 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index be56b0ba88c..4afbadb1331 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -88,13 +88,6 @@ struct mem_block { struct drm_file *file_priv; /* NULL: free, -1: heap, other: real files */ }; -typedef struct _drm_i915_vbl_swap { - struct list_head head; - drm_drawable_t drw_id; - unsigned int pipe; - unsigned int sequence; -} drm_i915_vbl_swap_t; - struct opregion_header; struct opregion_acpi; struct opregion_swsci; @@ -146,10 +139,6 @@ typedef struct drm_i915_private { unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds; int vblank_pipe; - spinlock_t swaps_lock; - drm_i915_vbl_swap_t vbl_swaps; - unsigned int swaps_pending; - struct intel_opregion opregion; /* Register state */ @@ -242,9 +231,6 @@ typedef struct drm_i915_private { u8 saveDACDATA[256*3]; /* 256 3-byte colors */ u8 saveCR[37]; - /** Work task for vblank-related ring access */ - struct work_struct vblank_work; - struct { struct drm_mm gtt_space; @@ -445,7 +431,6 @@ extern int i915_irq_wait(struct drm_device *dev, void *data, void i915_user_irq_get(struct drm_device *dev); void i915_user_irq_put(struct drm_device *dev); -extern void i915_vblank_work_handler(struct work_struct *work); extern irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS); extern void i915_driver_irq_preinstall(struct drm_device * dev); extern int i915_driver_irq_postinstall(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 26f48932a51..a75345af62e 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -80,211 +80,6 @@ i915_pipe_enabled(struct drm_device *dev, int pipe) return 0; } -/** - * Emit blits for scheduled buffer swaps. - * - * This function will be called with the HW lock held. - * Because this function must grab the ring mutex (dev->struct_mutex), - * it can no longer run at soft irq time. We'll fix this when we do - * the DRI2 swap buffer work. - */ -static void i915_vblank_tasklet(struct drm_device *dev) -{ - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - unsigned long irqflags; - struct list_head *list, *tmp, hits, *hit; - int nhits, nrects, slice[2], upper[2], lower[2], i; - unsigned counter[2]; - struct drm_drawable_info *drw; - drm_i915_sarea_t *sarea_priv = dev_priv->sarea_priv; - u32 cpp = dev_priv->cpp; - u32 cmd = (cpp == 4) ? (XY_SRC_COPY_BLT_CMD | - XY_SRC_COPY_BLT_WRITE_ALPHA | - XY_SRC_COPY_BLT_WRITE_RGB) - : XY_SRC_COPY_BLT_CMD; - u32 src_pitch = sarea_priv->pitch * cpp; - u32 dst_pitch = sarea_priv->pitch * cpp; - u32 ropcpp = (0xcc << 16) | ((cpp - 1) << 24); - RING_LOCALS; - - mutex_lock(&dev->struct_mutex); - - if (IS_I965G(dev) && sarea_priv->front_tiled) { - cmd |= XY_SRC_COPY_BLT_DST_TILED; - dst_pitch >>= 2; - } - if (IS_I965G(dev) && sarea_priv->back_tiled) { - cmd |= XY_SRC_COPY_BLT_SRC_TILED; - src_pitch >>= 2; - } - - counter[0] = drm_vblank_count(dev, 0); - counter[1] = drm_vblank_count(dev, 1); - - DRM_DEBUG("\n"); - - INIT_LIST_HEAD(&hits); - - nhits = nrects = 0; - - spin_lock_irqsave(&dev_priv->swaps_lock, irqflags); - - /* Find buffer swaps scheduled for this vertical blank */ - list_for_each_safe(list, tmp, &dev_priv->vbl_swaps.head) { - drm_i915_vbl_swap_t *vbl_swap = - list_entry(list, drm_i915_vbl_swap_t, head); - int pipe = vbl_swap->pipe; - - if ((counter[pipe] - vbl_swap->sequence) > (1<<23)) - continue; - - list_del(list); - dev_priv->swaps_pending--; - drm_vblank_put(dev, pipe); - - spin_unlock(&dev_priv->swaps_lock); - spin_lock(&dev->drw_lock); - - drw = drm_get_drawable_info(dev, vbl_swap->drw_id); - - list_for_each(hit, &hits) { - drm_i915_vbl_swap_t *swap_cmp = - list_entry(hit, drm_i915_vbl_swap_t, head); - struct drm_drawable_info *drw_cmp = - drm_get_drawable_info(dev, swap_cmp->drw_id); - - /* Make sure both drawables are still - * around and have some rectangles before - * we look inside to order them for the - * blts below. - */ - if (drw_cmp && drw_cmp->num_rects > 0 && - drw && drw->num_rects > 0 && - drw_cmp->rects[0].y1 > drw->rects[0].y1) { - list_add_tail(list, hit); - break; - } - } - - spin_unlock(&dev->drw_lock); - - /* List of hits was empty, or we reached the end of it */ - if (hit == &hits) - list_add_tail(list, hits.prev); - - nhits++; - - spin_lock(&dev_priv->swaps_lock); - } - - if (nhits == 0) { - spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags); - mutex_unlock(&dev->struct_mutex); - return; - } - - spin_unlock(&dev_priv->swaps_lock); - - i915_kernel_lost_context(dev); - - if (IS_I965G(dev)) { - BEGIN_LP_RING(4); - - OUT_RING(GFX_OP_DRAWRECT_INFO_I965); - OUT_RING(0); - OUT_RING(((sarea_priv->width - 1) & 0xffff) | ((sarea_priv->height - 1) << 16)); - OUT_RING(0); - ADVANCE_LP_RING(); - } else { - BEGIN_LP_RING(6); - - OUT_RING(GFX_OP_DRAWRECT_INFO); - OUT_RING(0); - OUT_RING(0); - OUT_RING(sarea_priv->width | sarea_priv->height << 16); - OUT_RING(sarea_priv->width | sarea_priv->height << 16); - OUT_RING(0); - - ADVANCE_LP_RING(); - } - - sarea_priv->ctxOwner = DRM_KERNEL_CONTEXT; - - upper[0] = upper[1] = 0; - slice[0] = max(sarea_priv->pipeA_h / nhits, 1); - slice[1] = max(sarea_priv->pipeB_h / nhits, 1); - lower[0] = sarea_priv->pipeA_y + slice[0]; - lower[1] = sarea_priv->pipeB_y + slice[0]; - - spin_lock(&dev->drw_lock); - - /* Emit blits for buffer swaps, partitioning both outputs into as many - * slices as there are buffer swaps scheduled in order to avoid tearing - * (based on the assumption that a single buffer swap would always - * complete before scanout starts). - */ - for (i = 0; i++ < nhits; - upper[0] = lower[0], lower[0] += slice[0], - upper[1] = lower[1], lower[1] += slice[1]) { - if (i == nhits) - lower[0] = lower[1] = sarea_priv->height; - - list_for_each(hit, &hits) { - drm_i915_vbl_swap_t *swap_hit = - list_entry(hit, drm_i915_vbl_swap_t, head); - struct drm_clip_rect *rect; - int num_rects, pipe; - unsigned short top, bottom; - - drw = drm_get_drawable_info(dev, swap_hit->drw_id); - - /* The drawable may have been destroyed since - * the vblank swap was queued - */ - if (!drw) - continue; - - rect = drw->rects; - pipe = swap_hit->pipe; - top = upper[pipe]; - bottom = lower[pipe]; - - for (num_rects = drw->num_rects; num_rects--; rect++) { - int y1 = max(rect->y1, top); - int y2 = min(rect->y2, bottom); - - if (y1 >= y2) - continue; - - BEGIN_LP_RING(8); - - OUT_RING(cmd); - OUT_RING(ropcpp | dst_pitch); - OUT_RING((y1 << 16) | rect->x1); - OUT_RING((y2 << 16) | rect->x2); - OUT_RING(sarea_priv->front_offset); - OUT_RING((y1 << 16) | rect->x1); - OUT_RING(src_pitch); - OUT_RING(sarea_priv->back_offset); - - ADVANCE_LP_RING(); - } - } - } - - spin_unlock_irqrestore(&dev->drw_lock, irqflags); - mutex_unlock(&dev->struct_mutex); - - list_for_each_safe(hit, tmp, &hits) { - drm_i915_vbl_swap_t *swap_hit = - list_entry(hit, drm_i915_vbl_swap_t, head); - - list_del(hit); - - drm_free(swap_hit, sizeof(*swap_hit), DRM_MEM_DRIVER); - } -} - /* Called from drm generic code, passed a 'crtc', which * we use as a pipe index */ @@ -322,40 +117,6 @@ u32 i915_get_vblank_counter(struct drm_device *dev, int pipe) return count; } -void -i915_vblank_work_handler(struct work_struct *work) -{ - drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, - vblank_work); - struct drm_device *dev = dev_priv->dev; - unsigned long irqflags; - - if (dev->lock.hw_lock == NULL) { - i915_vblank_tasklet(dev); - return; - } - - spin_lock_irqsave(&dev->tasklet_lock, irqflags); - dev->locked_tasklet_func = i915_vblank_tasklet; - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - - /* Try to get the lock now, if this fails, the lock - * holder will execute the tasklet during unlock - */ - if (!drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) - return; - - dev->lock.lock_time = jiffies; - atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); - - spin_lock_irqsave(&dev->tasklet_lock, irqflags); - dev->locked_tasklet_func = NULL; - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - - i915_vblank_tasklet(dev); - drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); -} - irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) { struct drm_device *dev = (struct drm_device *) arg; @@ -433,9 +194,6 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) if (iir & I915_ASLE_INTERRUPT) opregion_asle_intr(dev); - if (vblank && dev_priv->swaps_pending > 0) - schedule_work(&dev_priv->vblank_work); - return IRQ_HANDLED; } @@ -696,123 +454,21 @@ int i915_vblank_pipe_get(struct drm_device *dev, void *data, int i915_vblank_swap(struct drm_device *dev, void *data, struct drm_file *file_priv) { - drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_vblank_swap_t *swap = data; - drm_i915_vbl_swap_t *vbl_swap, *vbl_old; - unsigned int pipe, seqtype, curseq; - unsigned long irqflags; - struct list_head *list; - int ret; - - if (!dev_priv || !dev_priv->sarea_priv) { - DRM_ERROR("%s called with no initialization\n", __func__); - return -EINVAL; - } - - if (dev_priv->sarea_priv->rotation) { - DRM_DEBUG("Rotation not supported\n"); - return -EINVAL; - } - - if (swap->seqtype & ~(_DRM_VBLANK_RELATIVE | _DRM_VBLANK_ABSOLUTE | - _DRM_VBLANK_SECONDARY | _DRM_VBLANK_NEXTONMISS)) { - DRM_ERROR("Invalid sequence type 0x%x\n", swap->seqtype); - return -EINVAL; - } - - pipe = (swap->seqtype & _DRM_VBLANK_SECONDARY) ? 1 : 0; - - seqtype = swap->seqtype & (_DRM_VBLANK_RELATIVE | _DRM_VBLANK_ABSOLUTE); - - if (!(dev_priv->vblank_pipe & (1 << pipe))) { - DRM_ERROR("Invalid pipe %d\n", pipe); - return -EINVAL; - } - - spin_lock_irqsave(&dev->drw_lock, irqflags); - - if (!drm_get_drawable_info(dev, swap->drawable)) { - spin_unlock_irqrestore(&dev->drw_lock, irqflags); - DRM_DEBUG("Invalid drawable ID %d\n", swap->drawable); - return -EINVAL; - } - - spin_unlock_irqrestore(&dev->drw_lock, irqflags); - - /* - * We take the ref here and put it when the swap actually completes - * in the tasklet. + /* 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. */ - ret = drm_vblank_get(dev, pipe); - if (ret) - return ret; - curseq = drm_vblank_count(dev, pipe); - - if (seqtype == _DRM_VBLANK_RELATIVE) - swap->sequence += curseq; - - if ((curseq - swap->sequence) <= (1<<23)) { - if (swap->seqtype & _DRM_VBLANK_NEXTONMISS) { - swap->sequence = curseq + 1; - } else { - DRM_DEBUG("Missed target sequence\n"); - drm_vblank_put(dev, pipe); - return -EINVAL; - } - } - - vbl_swap = drm_calloc(1, sizeof(*vbl_swap), DRM_MEM_DRIVER); - - if (!vbl_swap) { - DRM_ERROR("Failed to allocate memory to queue swap\n"); - drm_vblank_put(dev, pipe); - return -ENOMEM; - } - - vbl_swap->drw_id = swap->drawable; - vbl_swap->pipe = pipe; - vbl_swap->sequence = swap->sequence; - - spin_lock_irqsave(&dev_priv->swaps_lock, irqflags); - - list_for_each(list, &dev_priv->vbl_swaps.head) { - vbl_old = list_entry(list, drm_i915_vbl_swap_t, head); - - if (vbl_old->drw_id == swap->drawable && - vbl_old->pipe == pipe && - vbl_old->sequence == swap->sequence) { - spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags); - drm_vblank_put(dev, pipe); - drm_free(vbl_swap, sizeof(*vbl_swap), DRM_MEM_DRIVER); - DRM_DEBUG("Already scheduled\n"); - return 0; - } - } - - if (dev_priv->swaps_pending >= 10) { - DRM_DEBUG("Too many swaps queued\n"); - DRM_DEBUG(" pipe 0: %d pipe 1: %d\n", - drm_vblank_count(dev, 0), - drm_vblank_count(dev, 1)); - - list_for_each(list, &dev_priv->vbl_swaps.head) { - vbl_old = list_entry(list, drm_i915_vbl_swap_t, head); - DRM_DEBUG("\tdrw %x pipe %d seq %x\n", - vbl_old->drw_id, vbl_old->pipe, - vbl_old->sequence); - } - spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags); - drm_vblank_put(dev, pipe); - drm_free(vbl_swap, sizeof(*vbl_swap), DRM_MEM_DRIVER); - return -EBUSY; - } - - list_add_tail(&vbl_swap->head, &dev_priv->vbl_swaps.head); - dev_priv->swaps_pending++; - - spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags); - - return 0; + return -EINVAL; } /* drm_dma.h hooks @@ -831,11 +487,6 @@ int i915_driver_irq_postinstall(struct drm_device *dev) drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; int ret, num_pipes = 2; - spin_lock_init(&dev_priv->swaps_lock); - INIT_LIST_HEAD(&dev_priv->vbl_swaps.head); - INIT_WORK(&dev_priv->vblank_work, i915_vblank_work_handler); - dev_priv->swaps_pending = 0; - /* Set initial unmasked IRQs to just the selected vblank pipes. */ dev_priv->irq_mask_reg = ~0; -- cgit v1.2.3 From 5d8e6bb7a20b6206e1fe44565efc383a941b81fa Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 4 Nov 2008 18:36:29 -0800 Subject: drm: Remove infrastructure for supporting i915's vblank swapping. It's not used in any other drivers, and doesn't look like it will be from drm.git master. Signed-off-by: Eric Anholt Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_irq.c | 80 ---------------------------------------------- drivers/gpu/drm/drm_lock.c | 9 ------ drivers/gpu/drm/drm_stub.c | 1 - 3 files changed, 90 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index 212a94f715b..15c8dabc3e9 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -280,8 +280,6 @@ int drm_irq_uninstall(struct drm_device * dev) drm_vblank_cleanup(dev); - dev->locked_tasklet_func = NULL; - return 0; } EXPORT_SYMBOL(drm_irq_uninstall); @@ -699,81 +697,3 @@ void drm_handle_vblank(struct drm_device *dev, int crtc) drm_vbl_send_signals(dev, crtc); } EXPORT_SYMBOL(drm_handle_vblank); - -/** - * Tasklet wrapper function. - * - * \param data DRM device in disguise. - * - * Attempts to grab the HW lock and calls the driver callback on success. On - * failure, leave the lock marked as contended so the callback can be called - * from drm_unlock(). - */ -static void drm_locked_tasklet_func(unsigned long data) -{ - struct drm_device *dev = (struct drm_device *)data; - unsigned long irqflags; - void (*tasklet_func)(struct drm_device *); - - spin_lock_irqsave(&dev->tasklet_lock, irqflags); - tasklet_func = dev->locked_tasklet_func; - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - - if (!tasklet_func || - !drm_lock_take(&dev->lock, - DRM_KERNEL_CONTEXT)) { - return; - } - - dev->lock.lock_time = jiffies; - atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); - - spin_lock_irqsave(&dev->tasklet_lock, irqflags); - tasklet_func = dev->locked_tasklet_func; - dev->locked_tasklet_func = NULL; - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - - if (tasklet_func != NULL) - tasklet_func(dev); - - drm_lock_free(&dev->lock, - DRM_KERNEL_CONTEXT); -} - -/** - * Schedule a tasklet to call back a driver hook with the HW lock held. - * - * \param dev DRM device. - * \param func Driver callback. - * - * This is intended for triggering actions that require the HW lock from an - * interrupt handler. The lock will be grabbed ASAP after the interrupt handler - * completes. Note that the callback may be called from interrupt or process - * context, it must not make any assumptions about this. Also, the HW lock will - * be held with the kernel context or any client context. - */ -void drm_locked_tasklet(struct drm_device *dev, void (*func)(struct drm_device *)) -{ - unsigned long irqflags; - static DECLARE_TASKLET(drm_tasklet, drm_locked_tasklet_func, 0); - - if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ) || - test_bit(TASKLET_STATE_SCHED, &drm_tasklet.state)) - return; - - spin_lock_irqsave(&dev->tasklet_lock, irqflags); - - if (dev->locked_tasklet_func) { - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - return; - } - - dev->locked_tasklet_func = func; - - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - - drm_tasklet.data = (unsigned long)dev; - - tasklet_hi_schedule(&drm_tasklet); -} -EXPORT_SYMBOL(drm_locked_tasklet); diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c index 888159e03d2..1cfa72031f8 100644 --- a/drivers/gpu/drm/drm_lock.c +++ b/drivers/gpu/drm/drm_lock.c @@ -154,8 +154,6 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv) int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_lock *lock = data; - unsigned long irqflags; - void (*tasklet_func)(struct drm_device *); if (lock->context == DRM_KERNEL_CONTEXT) { DRM_ERROR("Process %d using kernel context %d\n", @@ -163,13 +161,6 @@ int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv) return -EINVAL; } - spin_lock_irqsave(&dev->tasklet_lock, irqflags); - tasklet_func = dev->locked_tasklet_func; - dev->locked_tasklet_func = NULL; - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - if (tasklet_func != NULL) - tasklet_func(dev); - atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]); /* kernel_context_switch isn't used by any of the x86 drm diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c index 141e33004a7..66c96ec6667 100644 --- a/drivers/gpu/drm/drm_stub.c +++ b/drivers/gpu/drm/drm_stub.c @@ -92,7 +92,6 @@ static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev, spin_lock_init(&dev->count_lock); spin_lock_init(&dev->drw_lock); - spin_lock_init(&dev->tasklet_lock); spin_lock_init(&dev->lock.spinlock); init_timer(&dev->timer); mutex_init(&dev->struct_mutex); -- cgit v1.2.3 From 78538bf14995a136c2d9a22159ada49937359119 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Tue, 11 Nov 2008 17:56:16 +1000 Subject: drm/radeon: map registers at load time Now that the radeon driver has suspend/resume functions, it needs to map its registers at load time or it will likely crash if a suspend operation occurs before the driver has been initialized. This patch moves the register mapping code from firstopen to load and makes the mapping into a _DRM_DRIVER one so that the core won't remove it at lastclose time. Fixes (at least partially) kernel bz #11891. Signed-off-by: Jesse Barnes Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_cp.c | 15 +++++++++------ drivers/gpu/drm/radeon/radeon_drv.h | 2 +- 2 files changed, 10 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c index 073894824e6..abdc1ae3846 100644 --- a/drivers/gpu/drm/radeon/radeon_cp.c +++ b/drivers/gpu/drm/radeon/radeon_cp.c @@ -1751,6 +1751,12 @@ int radeon_driver_load(struct drm_device *dev, unsigned long flags) else dev_priv->flags |= RADEON_IS_PCI; + ret = drm_addmap(dev, drm_get_resource_start(dev, 2), + drm_get_resource_len(dev, 2), _DRM_REGISTERS, + _DRM_READ_ONLY | _DRM_DRIVER, &dev_priv->mmio); + if (ret != 0) + return ret; + DRM_DEBUG("%s card detected\n", ((dev_priv->flags & RADEON_IS_AGP) ? "AGP" : (((dev_priv->flags & RADEON_IS_PCIE) ? "PCIE" : "PCI")))); return ret; @@ -1767,12 +1773,6 @@ int radeon_driver_firstopen(struct drm_device *dev) dev_priv->gart_info.table_size = RADEON_PCIGART_TABLE_SIZE; - ret = drm_addmap(dev, drm_get_resource_start(dev, 2), - drm_get_resource_len(dev, 2), _DRM_REGISTERS, - _DRM_READ_ONLY, &dev_priv->mmio); - if (ret != 0) - return ret; - dev_priv->fb_aper_offset = drm_get_resource_start(dev, 0); ret = drm_addmap(dev, dev_priv->fb_aper_offset, drm_get_resource_len(dev, 0), _DRM_FRAME_BUFFER, @@ -1788,6 +1788,9 @@ int radeon_driver_unload(struct drm_device *dev) drm_radeon_private_t *dev_priv = dev->dev_private; DRM_DEBUG("\n"); + + drm_rmmap(dev, dev_priv->mmio); + drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER); dev->dev_private = NULL; diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h index 02f5575ba39..7a183789be9 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.h +++ b/drivers/gpu/drm/radeon/radeon_drv.h @@ -287,7 +287,6 @@ typedef struct drm_radeon_private { unsigned long gart_textures_offset; drm_local_map_t *sarea; - drm_local_map_t *mmio; drm_local_map_t *cp_ring; drm_local_map_t *ring_rptr; drm_local_map_t *gart_textures; @@ -318,6 +317,7 @@ typedef struct drm_radeon_private { int num_gb_pipes; int track_flush; + drm_local_map_t *mmio; } drm_radeon_private_t; typedef struct drm_radeon_buf_priv { -- cgit v1.2.3 From afa21e0584f78964c092981fad94e45d38cda249 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Tue, 11 Nov 2008 18:02:12 +1000 Subject: drm/i915: Filter pci devices based on PCI_CLASS_DISPLAY_VGA This fixes hangs on 855-class hardware by avoiding double attachment of the driver due to the stub second head device having the same pci id as the real device. Other DRM drivers probably want this treatment as well, but I'm applying it just to this one for safety. But we should clean up the drm_pciids.h mess now so that each driver has its own pci id list header in its own directory. Lets do that in the next release. Signed-off-by: Eric Anholt Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_drv.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 96f416afc3f..3ab1e9cc469 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -266,11 +266,19 @@ int drm_init(struct drm_driver *driver) for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) { pid = (struct pci_device_id *)&driver->pci_driver.id_table[i]; + /* Loop around setting up a DRM device for each PCI device + * matching our ID and device class. If we had the internal + * function that pci_get_subsys and pci_get_class used, we'd + * be able to just pass pid in instead of doing a two-stage + * thing. + */ pdev = NULL; - /* pass back in pdev to account for multiple identical cards */ while ((pdev = pci_get_subsys(pid->vendor, pid->device, pid->subvendor, pid->subdevice, pdev)) != NULL) { + if ((pdev->class & pid->class_mask) != pid->class) + continue; + /* stealth mode requires a manual probe */ pci_dev_get(pdev); drm_get_dev(pdev, pid, driver); -- cgit v1.2.3 From 0baf823a10bd4131f70e9712d1f02de3c247f1df Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Sat, 8 Nov 2008 11:44:14 +1000 Subject: drm/i915: Move legacy breadcrumb out of the reserved status page area Addresses in the hardware status page below index 0x20 are reserved for use by the hardware. The legacy breadcrumb was sitting at index 5. Move it to index 0x21, and make sure everyone uses the defined value instead of hard-coded constants. Signed-off-by: Keith Packard Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/i915_dma.c | 10 ++++------ drivers/gpu/drm/i915/i915_drv.h | 3 ++- drivers/gpu/drm/i915/i915_irq.c | 6 ++---- 3 files changed, 8 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 9d4278be0ca..0d215e38606 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -445,7 +445,7 @@ static void i915_emit_breadcrumb(struct drm_device *dev) BEGIN_LP_RING(4); OUT_RING(MI_STORE_DWORD_INDEX); - OUT_RING(5 << MI_STORE_DWORD_INDEX_SHIFT); + OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); OUT_RING(dev_priv->counter); OUT_RING(0); ADVANCE_LP_RING(); @@ -576,7 +576,7 @@ static int i915_dispatch_flip(struct drm_device * dev) BEGIN_LP_RING(4); OUT_RING(MI_STORE_DWORD_INDEX); - OUT_RING(5 << MI_STORE_DWORD_INDEX_SHIFT); + OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); OUT_RING(dev_priv->counter); OUT_RING(0); ADVANCE_LP_RING(); @@ -611,7 +611,6 @@ 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; - u32 *hw_status = dev_priv->hw_status_page; drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *) dev_priv->sarea_priv; drm_i915_batchbuffer_t *batch = data; @@ -637,7 +636,7 @@ static int i915_batchbuffer(struct drm_device *dev, void *data, mutex_unlock(&dev->struct_mutex); if (sarea_priv) - sarea_priv->last_dispatch = (int)hw_status[5]; + sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); return ret; } @@ -645,7 +644,6 @@ 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; - u32 *hw_status = dev_priv->hw_status_page; drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *) dev_priv->sarea_priv; drm_i915_cmdbuffer_t *cmdbuf = data; @@ -673,7 +671,7 @@ static int i915_cmdbuffer(struct drm_device *dev, void *data, } if (sarea_priv) - sarea_priv->last_dispatch = (int)hw_status[5]; + sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); return 0; } diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 4afbadb1331..ef1c0b8f8d0 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -608,8 +608,9 @@ static inline void opregion_enable_asle(struct drm_device *dev) { return; } * The area from dword 0x20 to 0x3ff is available for driver usage. */ #define READ_HWSP(dev_priv, reg) (((volatile u32*)(dev_priv->hw_status_page))[reg]) -#define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, 5) +#define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX) #define I915_GEM_HWS_INDEX 0x20 +#define I915_BREADCRUMB_INDEX 0x21 extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller); diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index a75345af62e..82752d6177a 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -212,12 +212,10 @@ static int i915_emit_irq(struct drm_device * dev) if (dev_priv->sarea_priv) dev_priv->sarea_priv->last_enqueue = dev_priv->counter; - BEGIN_LP_RING(6); + BEGIN_LP_RING(4); OUT_RING(MI_STORE_DWORD_INDEX); - OUT_RING(5 << MI_STORE_DWORD_INDEX_SHIFT); + OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); OUT_RING(dev_priv->counter); - OUT_RING(0); - OUT_RING(0); OUT_RING(MI_USER_INTERRUPT); ADVANCE_LP_RING(); -- cgit v1.2.3