diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 153 |
1 files changed, 105 insertions, 48 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 39f5c658ef5..c0ae6bbbd9b 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -989,10 +989,10 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, return -ENODEV; /* Only handle setting domains to types used by the CPU. */ - if (write_domain & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) + if (write_domain & I915_GEM_GPU_DOMAINS) return -EINVAL; - if (read_domains & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) + if (read_domains & I915_GEM_GPU_DOMAINS) return -EINVAL; /* Having something in the write domain implies it's in the read @@ -1481,14 +1481,19 @@ i915_gem_object_move_to_inactive(struct drm_gem_object *obj) * Returned sequence numbers are nonzero on success. */ static uint32_t -i915_add_request(struct drm_device *dev, uint32_t flush_domains) +i915_add_request(struct drm_device *dev, struct drm_file *file_priv, + uint32_t flush_domains) { drm_i915_private_t *dev_priv = dev->dev_private; + struct drm_i915_file_private *i915_file_priv = NULL; struct drm_i915_gem_request *request; uint32_t seqno; int was_empty; RING_LOCALS; + if (file_priv != NULL) + i915_file_priv = file_priv->driver_priv; + request = drm_calloc(1, sizeof(*request), DRM_MEM_DRIVER); if (request == NULL) return 0; @@ -1515,6 +1520,12 @@ i915_add_request(struct drm_device *dev, uint32_t flush_domains) request->emitted_jiffies = jiffies; was_empty = list_empty(&dev_priv->mm.request_list); list_add_tail(&request->list, &dev_priv->mm.request_list); + if (i915_file_priv) { + list_add_tail(&request->client_list, + &i915_file_priv->mm.request_list); + } else { + INIT_LIST_HEAD(&request->client_list); + } /* Associate any objects on the flushing list matching the write * domain we're flushing with our flush. @@ -1664,6 +1675,7 @@ i915_gem_retire_requests(struct drm_device *dev) i915_gem_retire_request(dev, request); list_del(&request->list); + list_del(&request->client_list); drm_free(request, sizeof(*request), DRM_MEM_DRIVER); } else break; @@ -1702,7 +1714,10 @@ i915_wait_request(struct drm_device *dev, uint32_t seqno) BUG_ON(seqno == 0); if (!i915_seqno_passed(i915_get_gem_seqno(dev), seqno)) { - ier = I915_READ(IER); + if (IS_IGDNG(dev)) + ier = I915_READ(DEIER) | I915_READ(GTIER); + else + ier = I915_READ(IER); if (!ier) { DRM_ERROR("something (likely vbetool) disabled " "interrupts, re-enabling\n"); @@ -1754,8 +1769,7 @@ i915_gem_flush(struct drm_device *dev, if (flush_domains & I915_GEM_DOMAIN_CPU) drm_agp_chipset_flush(dev); - if ((invalidate_domains | flush_domains) & ~(I915_GEM_DOMAIN_CPU | - I915_GEM_DOMAIN_GTT)) { + if ((invalidate_domains | flush_domains) & I915_GEM_GPU_DOMAINS) { /* * read/write caches: * @@ -1977,7 +1991,7 @@ i915_gem_evict_something(struct drm_device *dev) i915_gem_flush(dev, obj->write_domain, obj->write_domain); - i915_add_request(dev, obj->write_domain); + i915_add_request(dev, NULL, obj->write_domain); obj = NULL; continue; @@ -1991,7 +2005,7 @@ i915_gem_evict_something(struct drm_device *dev) /* If we didn't do any of the above, there's nothing to be done * and we just can't fit it in. */ - return -ENOMEM; + return -ENOSPC; } return ret; } @@ -2006,7 +2020,7 @@ i915_gem_evict_everything(struct drm_device *dev) if (ret != 0) break; } - if (ret == -ENOMEM) + if (ret == -ENOSPC) return 0; return ret; } @@ -2215,7 +2229,7 @@ try_again: loff_t offset; if (avail == 0) - return -ENOMEM; + return -ENOSPC; for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { @@ -2248,7 +2262,7 @@ try_again: i915_gem_flush(dev, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); - seqno = i915_add_request(dev, + seqno = i915_add_request(dev, NULL, I915_GEM_GPU_DOMAINS); if (seqno == 0) return -ENOMEM; @@ -2364,7 +2378,7 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) spin_unlock(&dev_priv->mm.active_list_lock); if (lists_empty) { DRM_ERROR("GTT full, but LRU list empty\n"); - return -ENOMEM; + return -ENOSPC; } ret = i915_gem_evict_something(dev); @@ -2409,8 +2423,8 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) * wasn't in the GTT, there shouldn't be any way it could have been in * a GPU cache */ - BUG_ON(obj->read_domains & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); - BUG_ON(obj->write_domain & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); + BUG_ON(obj->read_domains & I915_GEM_GPU_DOMAINS); + BUG_ON(obj->write_domain & I915_GEM_GPU_DOMAINS); return 0; } @@ -2452,7 +2466,7 @@ i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj) /* Queue the GPU write cache flushing we need. */ i915_gem_flush(dev, 0, obj->write_domain); - seqno = i915_add_request(dev, obj->write_domain); + seqno = i915_add_request(dev, NULL, obj->write_domain); obj->write_domain = 0; i915_gem_object_move_to_active(obj, seqno); } @@ -3035,20 +3049,12 @@ i915_dispatch_gem_execbuffer(struct drm_device *dev, drm_i915_private_t *dev_priv = dev->dev_private; int nbox = exec->num_cliprects; int i = 0, count; - uint32_t exec_start, exec_len; + uint32_t exec_start, exec_len; RING_LOCALS; exec_start = (uint32_t) exec_offset + exec->batch_start_offset; exec_len = (uint32_t) exec->batch_len; - if ((exec_start | exec_len) & 0x7) { - DRM_ERROR("alignment\n"); - return -EINVAL; - } - - if (!exec_start) - return -EINVAL; - count = nbox ? nbox : 1; for (i = 0; i < count; i++) { @@ -3089,6 +3095,10 @@ i915_dispatch_gem_execbuffer(struct drm_device *dev, /* Throttle our rendering by waiting until the ring has completed our requests * emitted over 20 msec ago. * + * Note that if we were to use the current jiffies each time around the loop, + * we wouldn't escape the function with any frames outstanding if the time to + * render a frame was over 20ms. + * * This should get us reasonable parallelism between CPU and GPU but also * relatively low latency when blocking on a particular request to finish. */ @@ -3097,15 +3107,25 @@ i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file_priv) { struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; int ret = 0; - uint32_t seqno; + unsigned long recent_enough = jiffies - msecs_to_jiffies(20); mutex_lock(&dev->struct_mutex); - seqno = i915_file_priv->mm.last_gem_throttle_seqno; - i915_file_priv->mm.last_gem_throttle_seqno = - i915_file_priv->mm.last_gem_seqno; - if (seqno) - ret = i915_wait_request(dev, seqno); + while (!list_empty(&i915_file_priv->mm.request_list)) { + struct drm_i915_gem_request *request; + + request = list_first_entry(&i915_file_priv->mm.request_list, + struct drm_i915_gem_request, + client_list); + + if (time_after_eq(request->emitted_jiffies, recent_enough)) + break; + + ret = i915_wait_request(dev, request->seqno); + if (ret != 0) + break; + } mutex_unlock(&dev->struct_mutex); + return ret; } @@ -3182,12 +3202,29 @@ err: return ret; } +static int +i915_gem_check_execbuffer (struct drm_i915_gem_execbuffer *exec, + uint64_t exec_offset) +{ + uint32_t exec_start, exec_len; + + exec_start = (uint32_t) exec_offset + exec->batch_start_offset; + exec_len = (uint32_t) exec->batch_len; + + if ((exec_start | exec_len) & 0x7) + return -EINVAL; + + if (!exec_start) + return -EINVAL; + + return 0; +} + int i915_gem_execbuffer(struct drm_device *dev, void *data, struct drm_file *file_priv) { drm_i915_private_t *dev_priv = dev->dev_private; - struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; struct drm_i915_gem_execbuffer *args = data; struct drm_i915_gem_exec_object *exec_list = NULL; struct drm_gem_object **object_list = NULL; @@ -3312,7 +3349,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data, break; /* error other than GTT full, or we've already tried again */ - if (ret != -ENOMEM || pin_tries >= 1) { + if (ret != -ENOSPC || pin_tries >= 1) { if (ret != -ERESTARTSYS) DRM_ERROR("Failed to pin buffers %d\n", ret); goto err; @@ -3331,8 +3368,20 @@ i915_gem_execbuffer(struct drm_device *dev, void *data, /* Set the pending read domains for the batch buffer to COMMAND */ batch_obj = object_list[args->buffer_count-1]; - batch_obj->pending_read_domains = I915_GEM_DOMAIN_COMMAND; - batch_obj->pending_write_domain = 0; + if (batch_obj->pending_write_domain) { + DRM_ERROR("Attempting to use self-modifying batch buffer\n"); + ret = -EINVAL; + goto err; + } + batch_obj->pending_read_domains |= I915_GEM_DOMAIN_COMMAND; + + /* Sanity check the batch buffer, prior to moving objects */ + exec_offset = exec_list[args->buffer_count - 1].offset; + ret = i915_gem_check_execbuffer (args, exec_offset); + if (ret != 0) { + DRM_ERROR("execbuf with invalid offset/length\n"); + goto err; + } i915_verify_inactive(dev, __FILE__, __LINE__); @@ -3363,7 +3412,8 @@ i915_gem_execbuffer(struct drm_device *dev, void *data, dev->invalidate_domains, dev->flush_domains); if (dev->flush_domains) - (void)i915_add_request(dev, dev->flush_domains); + (void)i915_add_request(dev, file_priv, + dev->flush_domains); } for (i = 0; i < args->buffer_count; i++) { @@ -3381,8 +3431,6 @@ i915_gem_execbuffer(struct drm_device *dev, void *data, } #endif - exec_offset = exec_list[args->buffer_count - 1].offset; - #if WATCH_EXEC i915_gem_dump_object(batch_obj, args->batch_len, @@ -3412,9 +3460,8 @@ i915_gem_execbuffer(struct drm_device *dev, void *data, * *some* interrupts representing completion of buffers that we can * wait on when trying to clear up gtt space). */ - seqno = i915_add_request(dev, flush_domains); + seqno = i915_add_request(dev, file_priv, flush_domains); BUG_ON(seqno == 0); - i915_file_priv->mm.last_gem_seqno = seqno; for (i = 0; i < args->buffer_count; i++) { struct drm_gem_object *obj = object_list[i]; @@ -3520,8 +3567,7 @@ i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) atomic_inc(&dev->pin_count); atomic_add(obj->size, &dev->pin_memory); if (!obj_priv->active && - (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | - I915_GEM_DOMAIN_GTT)) == 0 && + (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0 && !list_empty(&obj_priv->list)) list_del_init(&obj_priv->list); } @@ -3548,8 +3594,7 @@ i915_gem_object_unpin(struct drm_gem_object *obj) */ if (obj_priv->pin_count == 0) { if (!obj_priv->active && - (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | - I915_GEM_DOMAIN_GTT)) == 0) + (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); atomic_dec(&dev->pin_count); @@ -3653,15 +3698,14 @@ i915_gem_busy_ioctl(struct drm_device *dev, void *data, struct drm_gem_object *obj; struct drm_i915_gem_object *obj_priv; - mutex_lock(&dev->struct_mutex); obj = drm_gem_object_lookup(dev, file_priv, args->handle); if (obj == NULL) { DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n", args->handle); - mutex_unlock(&dev->struct_mutex); return -EBADF; } + mutex_lock(&dev->struct_mutex); /* Update the active list for the hardware's current position. * Otherwise this only updates on a delayed timer or when irqs are * actually unmasked, and our working set ends up being larger than @@ -3800,9 +3844,8 @@ i915_gem_idle(struct drm_device *dev) /* Flush the GPU along with all non-CPU write domains */ - i915_gem_flush(dev, ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT), - ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); - seqno = i915_add_request(dev, ~I915_GEM_DOMAIN_CPU); + i915_gem_flush(dev, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); + seqno = i915_add_request(dev, NULL, I915_GEM_GPU_DOMAINS); if (seqno == 0) { mutex_unlock(&dev->struct_mutex); @@ -4352,3 +4395,17 @@ i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, drm_agp_chipset_flush(dev); return 0; } + +void i915_gem_release(struct drm_device * dev, struct drm_file *file_priv) +{ + struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; + + /* Clean up our request list when the client is going away, so that + * later retire_requests won't dereference our soon-to-be-gone + * file_priv. + */ + mutex_lock(&dev->struct_mutex); + while (!list_empty(&i915_file_priv->mm.request_list)) + list_del_init(i915_file_priv->mm.request_list.next); + mutex_unlock(&dev->struct_mutex); +} |