diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 100 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 61 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_context.c | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_execbuffer.c | 43 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 192 |
5 files changed, 244 insertions, 160 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index ce80a72c39d2..cc49e83e0857 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -523,6 +523,56 @@ enum i915_cache_level { typedef uint32_t gen6_gtt_pte_t; +/** + * A VMA represents a GEM BO that is bound into an address space. Therefore, a + * VMA's presence cannot be guaranteed before binding, or after unbinding the + * object into/from the address space. + * + * To make things as simple as possible (ie. no refcounting), a VMA's lifetime + * will always be <= an objects lifetime. So object refcounting should cover us. + */ +struct i915_vma { + struct drm_mm_node node; + struct drm_i915_gem_object *obj; + struct i915_address_space *vm; + + /** This object's place on the active/inactive lists */ + struct list_head mm_list; + + struct list_head vma_link; /* Link in the object's VMA list */ + + /** This vma's place in the batchbuffer or on the eviction list */ + struct list_head exec_list; + + /** + * Used for performing relocations during execbuffer insertion. + */ + struct hlist_node exec_node; + unsigned long exec_handle; + struct drm_i915_gem_exec_object2 *exec_entry; + + /** How many users have pinned this object in GTT space. The following + * users can each hold at most one reference: pwrite/pread, pin_ioctl + * (via user_pin_count), execbuffer (objects are not allowed multiple + * times for the same batchbuffer), and the framebuffer code. When + * switching/pageflipping, the framebuffer code has at most two buffers + * pinned per crtc. + * + * In the worst case this is 1 + 1 + 1 + 2*2 = 7. That would fit into 3 + * bits with absolutely no headroom. So use 4 bits. */ + unsigned int pin_count:4; +#define DRM_I915_GEM_OBJECT_MAX_PIN_COUNT 0xf + + /** Unmap an object from an address space. This usually consists of + * setting the valid PTE entries to a reserved scratch page. */ + void (*unbind_vma)(struct i915_vma *vma); + /* Map an object into an address space with the given cache flags. */ +#define GLOBAL_BIND (1<<0) + void (*bind_vma)(struct i915_vma *vma, + enum i915_cache_level cache_level, + u32 flags); +}; + struct i915_address_space { struct drm_mm mm; struct drm_device *dev; @@ -623,47 +673,6 @@ struct i915_hw_ppgtt { int (*enable)(struct drm_device *dev); }; -/** - * A VMA represents a GEM BO that is bound into an address space. Therefore, a - * VMA's presence cannot be guaranteed before binding, or after unbinding the - * object into/from the address space. - * - * To make things as simple as possible (ie. no refcounting), a VMA's lifetime - * will always be <= an objects lifetime. So object refcounting should cover us. - */ -struct i915_vma { - struct drm_mm_node node; - struct drm_i915_gem_object *obj; - struct i915_address_space *vm; - - /** This object's place on the active/inactive lists */ - struct list_head mm_list; - - struct list_head vma_link; /* Link in the object's VMA list */ - - /** This vma's place in the batchbuffer or on the eviction list */ - struct list_head exec_list; - - /** - * Used for performing relocations during execbuffer insertion. - */ - struct hlist_node exec_node; - unsigned long exec_handle; - struct drm_i915_gem_exec_object2 *exec_entry; - - /** How many users have pinned this object in GTT space. The following - * users can each hold at most one reference: pwrite/pread, pin_ioctl - * (via user_pin_count), execbuffer (objects are not allowed multiple - * times for the same batchbuffer), and the framebuffer code. When - * switching/pageflipping, the framebuffer code has at most two buffers - * pinned per crtc. - * - * In the worst case this is 1 + 1 + 1 + 2*2 = 7. That would fit into 3 - * bits with absolutely no headroom. So use 4 bits. */ - unsigned int pin_count:4; -#define DRM_I915_GEM_OBJECT_MAX_PIN_COUNT 0xf -}; - struct i915_ctx_hang_stats { /* This context had batch pending when hang was declared */ unsigned batch_pending; @@ -2238,19 +2247,10 @@ int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data, /* i915_gem_gtt.c */ void i915_gem_cleanup_aliasing_ppgtt(struct drm_device *dev); -void i915_ppgtt_bind_object(struct i915_hw_ppgtt *ppgtt, - struct drm_i915_gem_object *obj, - enum i915_cache_level cache_level); -void i915_ppgtt_unbind_object(struct i915_hw_ppgtt *ppgtt, - struct drm_i915_gem_object *obj); - void i915_check_and_clear_faults(struct drm_device *dev); void i915_gem_suspend_gtt_mappings(struct drm_device *dev); void i915_gem_restore_gtt_mappings(struct drm_device *dev); int __must_check i915_gem_gtt_prepare_object(struct drm_i915_gem_object *obj); -void i915_gem_gtt_bind_object(struct drm_i915_gem_object *obj, - enum i915_cache_level cache_level); -void i915_gem_gtt_unbind_object(struct drm_i915_gem_object *obj); void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj); void i915_gem_init_global_gtt(struct drm_device *dev); void i915_gem_setup_global_gtt(struct drm_device *dev, unsigned long start, diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 66b8dbc753a3..894e2fa1f764 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2743,12 +2743,8 @@ int i915_vma_unbind(struct i915_vma *vma) trace_i915_vma_unbind(vma); - if (obj->has_global_gtt_mapping) - i915_gem_gtt_unbind_object(obj); - if (obj->has_aliasing_ppgtt_mapping) { - i915_ppgtt_unbind_object(dev_priv->mm.aliasing_ppgtt, obj); - obj->has_aliasing_ppgtt_mapping = 0; - } + vma->unbind_vma(vma); + i915_gem_gtt_finish_object(obj); list_del(&vma->mm_list); @@ -3479,7 +3475,6 @@ int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj, enum i915_cache_level cache_level) { struct drm_device *dev = obj->base.dev; - drm_i915_private_t *dev_priv = dev->dev_private; struct i915_vma *vma; int ret; @@ -3518,11 +3513,8 @@ int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj, return ret; } - if (obj->has_global_gtt_mapping) - i915_gem_gtt_bind_object(obj, cache_level); - if (obj->has_aliasing_ppgtt_mapping) - i915_ppgtt_bind_object(dev_priv->mm.aliasing_ppgtt, - obj, cache_level); + list_for_each_entry(vma, &obj->vma_list, vma_link) + vma->bind_vma(vma, cache_level, 0); } list_for_each_entry(vma, &obj->vma_list, vma_link) @@ -3850,6 +3842,7 @@ i915_gem_object_pin(struct drm_i915_gem_object *obj, bool map_and_fenceable, bool nonblocking) { + const u32 flags = map_and_fenceable ? GLOBAL_BIND : 0; struct i915_vma *vma; int ret; @@ -3878,20 +3871,17 @@ i915_gem_object_pin(struct drm_i915_gem_object *obj, } if (!i915_gem_obj_bound(obj, vm)) { - struct drm_i915_private *dev_priv = obj->base.dev->dev_private; - ret = i915_gem_object_bind_to_vm(obj, vm, alignment, map_and_fenceable, nonblocking); if (ret) return ret; - if (!dev_priv->mm.aliasing_ppgtt) - i915_gem_gtt_bind_object(obj, obj->cache_level); } - if (!obj->has_global_gtt_mapping && map_and_fenceable) - i915_gem_gtt_bind_object(obj, obj->cache_level); + vma = i915_gem_obj_to_vma(obj, vm); + + vma->bind_vma(vma, obj->cache_level, flags); i915_gem_obj_to_vma(obj, vm)->pin_count++; obj->pin_mappable |= map_and_fenceable; @@ -4235,41 +4225,6 @@ struct i915_vma *i915_gem_obj_to_vma(struct drm_i915_gem_object *obj, return NULL; } -static struct i915_vma *__i915_gem_vma_create(struct drm_i915_gem_object *obj, - struct i915_address_space *vm) -{ - struct i915_vma *vma = kzalloc(sizeof(*vma), GFP_KERNEL); - if (vma == NULL) - return ERR_PTR(-ENOMEM); - - INIT_LIST_HEAD(&vma->vma_link); - INIT_LIST_HEAD(&vma->mm_list); - INIT_LIST_HEAD(&vma->exec_list); - vma->vm = vm; - vma->obj = obj; - - /* Keep GGTT vmas first to make debug easier */ - if (i915_is_ggtt(vm)) - list_add(&vma->vma_link, &obj->vma_list); - else - list_add_tail(&vma->vma_link, &obj->vma_list); - - return vma; -} - -struct i915_vma * -i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj, - struct i915_address_space *vm) -{ - struct i915_vma *vma; - - vma = i915_gem_obj_to_vma(obj, vm); - if (!vma) - vma = __i915_gem_vma_create(obj, vm); - - return vma; -} - void i915_gem_vma_destroy(struct i915_vma *vma) { WARN_ON(vma->node.allocated); diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index 9775d8bb2777..44a84e28a907 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -406,6 +406,7 @@ mi_set_context(struct intel_ring_buffer *ring, static int do_switch(struct i915_hw_context *to) { struct intel_ring_buffer *ring = to->ring; + struct drm_i915_private *dev_priv = ring->dev->dev_private; struct i915_hw_context *from = ring->last_context; u32 hw_flags = 0; int ret, i; @@ -440,8 +441,11 @@ static int do_switch(struct i915_hw_context *to) return ret; } - if (!to->obj->has_global_gtt_mapping) - i915_gem_gtt_bind_object(to->obj, to->obj->cache_level); + if (!to->obj->has_global_gtt_mapping) { + struct i915_vma *vma = i915_gem_obj_to_vma(to->obj, + &dev_priv->gtt.base); + vma->bind_vma(vma, to->obj->cache_level, GLOBAL_BIND); + } if (!to->is_initialized || is_default_context(to)) hw_flags |= MI_RESTORE_INHIBIT; diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 742f920c7852..964390c24f26 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -91,6 +91,7 @@ eb_lookup_vmas(struct eb_vmas *eb, struct i915_address_space *vm, struct drm_file *file) { + struct drm_i915_private *dev_priv = vm->dev->dev_private; struct drm_i915_gem_object *obj; struct list_head objects; int i, ret = 0; @@ -125,6 +126,15 @@ eb_lookup_vmas(struct eb_vmas *eb, i = 0; list_for_each_entry(obj, &objects, obj_exec_link) { struct i915_vma *vma; + struct i915_address_space *bind_vm = vm; + + /* If we have secure dispatch, or the userspace assures us that + * they know what they're doing, use the GGTT VM. + */ + if (exec[i].flags & EXEC_OBJECT_NEEDS_GTT || + ((args->flags & I915_EXEC_SECURE) && + (i == (args->buffer_count - 1)))) + bind_vm = &dev_priv->gtt.base; /* * NOTE: We can leak any vmas created here when something fails @@ -134,7 +144,7 @@ eb_lookup_vmas(struct eb_vmas *eb, * from the (obj, vm) we don't run the risk of creating * duplicated vmas for the same vm. */ - vma = i915_gem_obj_lookup_or_create_vma(obj, vm); + vma = i915_gem_obj_lookup_or_create_vma(obj, bind_vm); if (IS_ERR(vma)) { DRM_DEBUG("Failed to lookup VMA\n"); ret = PTR_ERR(vma); @@ -347,8 +357,8 @@ i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj, if (unlikely(IS_GEN6(dev) && reloc->write_domain == I915_GEM_DOMAIN_INSTRUCTION && !target_i915_obj->has_global_gtt_mapping)) { - i915_gem_gtt_bind_object(target_i915_obj, - target_i915_obj->cache_level); + struct i915_vma *vma = i915_gem_obj_to_vma(target_i915_obj, vm); + vma->bind_vma(vma, target_i915_obj->cache_level, GLOBAL_BIND); } /* Validate that the target is in a valid r/w GPU domain */ @@ -522,11 +532,12 @@ i915_gem_execbuffer_reserve_vma(struct i915_vma *vma, struct intel_ring_buffer *ring, bool *need_reloc) { - struct drm_i915_private *dev_priv = ring->dev->dev_private; + struct drm_i915_gem_object *obj = vma->obj; struct drm_i915_gem_exec_object2 *entry = vma->exec_entry; bool has_fenced_gpu_access = INTEL_INFO(ring->dev)->gen < 4; bool need_fence, need_mappable; - struct drm_i915_gem_object *obj = vma->obj; + u32 flags = (entry->flags & EXEC_OBJECT_NEEDS_GTT) && + !vma->obj->has_global_gtt_mapping ? GLOBAL_BIND : 0; int ret; need_fence = @@ -555,14 +566,6 @@ i915_gem_execbuffer_reserve_vma(struct i915_vma *vma, } } - /* Ensure ppgtt mapping exists if needed */ - if (dev_priv->mm.aliasing_ppgtt && !obj->has_aliasing_ppgtt_mapping) { - i915_ppgtt_bind_object(dev_priv->mm.aliasing_ppgtt, - obj, obj->cache_level); - - obj->has_aliasing_ppgtt_mapping = 1; - } - if (entry->offset != vma->node.start) { entry->offset = vma->node.start; *need_reloc = true; @@ -573,9 +576,7 @@ i915_gem_execbuffer_reserve_vma(struct i915_vma *vma, obj->base.pending_write_domain = I915_GEM_DOMAIN_RENDER; } - if (entry->flags & EXEC_OBJECT_NEEDS_GTT && - !obj->has_global_gtt_mapping) - i915_gem_gtt_bind_object(obj, obj->cache_level); + vma->bind_vma(vma, obj->cache_level, flags); return 0; } @@ -1182,8 +1183,14 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, /* snb/ivb/vlv conflate the "batch in ppgtt" bit with the "non-secure * batch" bit. Hence we need to pin secure batches into the global gtt. * hsw should have this fixed, but bdw mucks it up again. */ - if (flags & I915_DISPATCH_SECURE && !batch_obj->has_global_gtt_mapping) - i915_gem_gtt_bind_object(batch_obj, batch_obj->cache_level); + if (flags & I915_DISPATCH_SECURE && + !batch_obj->has_global_gtt_mapping) { + /* When we have multiple VMs, we'll need to make sure that we + * allocate space first */ + struct i915_vma *vma = i915_gem_obj_to_ggtt(batch_obj); + BUG_ON(!vma); + vma->bind_vma(vma, batch_obj->cache_level, GLOBAL_BIND); + } ret = i915_gem_execbuffer_move_to_gpu(ring, &eb->vmas); if (ret) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 81420e17f455..fc26a8503026 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -70,6 +70,11 @@ typedef gen8_gtt_pte_t gen8_ppgtt_pde_t; #define PPAT_CACHED_INDEX _PAGE_PAT /* WB LLCeLLC */ #define PPAT_DISPLAY_ELLC_INDEX _PAGE_PCD /* WT eLLC */ +static void ppgtt_bind_vma(struct i915_vma *vma, + enum i915_cache_level cache_level, + u32 flags); +static void ppgtt_unbind_vma(struct i915_vma *vma); + static inline gen8_gtt_pte_t gen8_pte_encode(dma_addr_t addr, enum i915_cache_level level, bool valid) @@ -748,22 +753,26 @@ void i915_gem_cleanup_aliasing_ppgtt(struct drm_device *dev) dev_priv->mm.aliasing_ppgtt = NULL; } -void i915_ppgtt_bind_object(struct i915_hw_ppgtt *ppgtt, - struct drm_i915_gem_object *obj, - enum i915_cache_level cache_level) +static void __always_unused +ppgtt_bind_vma(struct i915_vma *vma, + enum i915_cache_level cache_level, + u32 flags) { - ppgtt->base.insert_entries(&ppgtt->base, obj->pages, - i915_gem_obj_ggtt_offset(obj) >> PAGE_SHIFT, - cache_level); + const unsigned long entry = vma->node.start >> PAGE_SHIFT; + + WARN_ON(flags); + + vma->vm->insert_entries(vma->vm, vma->obj->pages, entry, cache_level); } -void i915_ppgtt_unbind_object(struct i915_hw_ppgtt *ppgtt, - struct drm_i915_gem_object *obj) +static void __always_unused ppgtt_unbind_vma(struct i915_vma *vma) { - ppgtt->base.clear_range(&ppgtt->base, - i915_gem_obj_ggtt_offset(obj) >> PAGE_SHIFT, - obj->base.size >> PAGE_SHIFT, - true); + const unsigned long entry = vma->node.start >> PAGE_SHIFT; + + vma->vm->clear_range(vma->vm, + entry, + vma->obj->base.size >> PAGE_SHIFT, + true); } extern int intel_iommu_gfx_mapped; @@ -865,8 +874,18 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev) true); list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { + struct i915_vma *vma = i915_gem_obj_to_vma(obj, + &dev_priv->gtt.base); + if (!vma) + continue; + i915_gem_clflush_object(obj, obj->pin_display); - i915_gem_gtt_bind_object(obj, obj->cache_level); + /* The bind_vma code tries to be smart about tracking mappings. + * Unfortunately above, we've just wiped out the mappings + * without telling our object about it. So we need to fake it. + */ + obj->has_global_gtt_mapping = 0; + vma->bind_vma(vma, obj->cache_level, GLOBAL_BIND); } i915_gem_chipset_flush(dev); @@ -1025,16 +1044,18 @@ static void gen6_ggtt_clear_range(struct i915_address_space *vm, readl(gtt_base); } -static void i915_ggtt_insert_entries(struct i915_address_space *vm, - struct sg_table *st, - unsigned int pg_start, - enum i915_cache_level cache_level) + +static void i915_ggtt_bind_vma(struct i915_vma *vma, + enum i915_cache_level cache_level, + u32 unused) { + const unsigned long entry = vma->node.start >> PAGE_SHIFT; unsigned int flags = (cache_level == I915_CACHE_NONE) ? AGP_USER_MEMORY : AGP_USER_CACHED_MEMORY; - intel_gtt_insert_sg_entries(st, pg_start, flags); - + BUG_ON(!i915_is_ggtt(vma->vm)); + intel_gtt_insert_sg_entries(vma->obj->pages, entry, flags); + vma->obj->has_global_gtt_mapping = 1; } static void i915_ggtt_clear_range(struct i915_address_space *vm, @@ -1045,33 +1066,77 @@ static void i915_ggtt_clear_range(struct i915_address_space *vm, intel_gtt_clear_range(first_entry, num_entries); } +static void i915_ggtt_unbind_vma(struct i915_vma *vma) +{ + const unsigned int first = vma->node.start >> PAGE_SHIFT; + const unsigned int size = vma->obj->base.size >> PAGE_SHIFT; -void i915_gem_gtt_bind_object(struct drm_i915_gem_object *obj, - enum i915_cache_level cache_level) + BUG_ON(!i915_is_ggtt(vma->vm)); + vma->obj->has_global_gtt_mapping = 0; + intel_gtt_clear_range(first, size); +} + +static void ggtt_bind_vma(struct i915_vma *vma, + enum i915_cache_level cache_level, + u32 flags) { - struct drm_device *dev = obj->base.dev; + struct drm_device *dev = vma->vm->dev; struct drm_i915_private *dev_priv = dev->dev_private; - const unsigned long entry = i915_gem_obj_ggtt_offset(obj) >> PAGE_SHIFT; + struct drm_i915_gem_object *obj = vma->obj; + const unsigned long entry = vma->node.start >> PAGE_SHIFT; - dev_priv->gtt.base.insert_entries(&dev_priv->gtt.base, obj->pages, - entry, - cache_level); + /* If there is no aliasing PPGTT, or the caller needs a global mapping, + * or we have a global mapping already but the cacheability flags have + * changed, set the global PTEs. + * + * If there is an aliasing PPGTT it is anecdotally faster, so use that + * instead if none of the above hold true. + * + * NB: A global mapping should only be needed for special regions like + * "gtt mappable", SNB errata, or if specified via special execbuf + * flags. At all other times, the GPU will use the aliasing PPGTT. + */ + if (!dev_priv->mm.aliasing_ppgtt || flags & GLOBAL_BIND) { + if (!obj->has_global_gtt_mapping || + (cache_level != obj->cache_level)) { + vma->vm->insert_entries(vma->vm, obj->pages, entry, + cache_level); + obj->has_global_gtt_mapping = 1; + } + } - obj->has_global_gtt_mapping = 1; + if (dev_priv->mm.aliasing_ppgtt && + (!obj->has_aliasing_ppgtt_mapping || + (cache_level != obj->cache_level))) { + struct i915_hw_ppgtt *appgtt = dev_priv->mm.aliasing_ppgtt; + appgtt->base.insert_entries(&appgtt->base, + vma->obj->pages, entry, cache_level); + vma->obj->has_aliasing_ppgtt_mapping = 1; + } } -void i915_gem_gtt_unbind_object(struct drm_i915_gem_object *obj) +static void ggtt_unbind_vma(struct i915_vma *vma) { - struct drm_device *dev = obj->base.dev; + struct drm_device *dev = vma->vm->dev; struct drm_i915_private *dev_priv = dev->dev_private; - const unsigned long entry = i915_gem_obj_ggtt_offset(obj) >> PAGE_SHIFT; - - dev_priv->gtt.base.clear_range(&dev_priv->gtt.base, - entry, - obj->base.size >> PAGE_SHIFT, - true); + struct drm_i915_gem_object *obj = vma->obj; + const unsigned long entry = vma->node.start >> PAGE_SHIFT; + + if (obj->has_global_gtt_mapping) { + vma->vm->clear_range(vma->vm, entry, + vma->obj->base.size >> PAGE_SHIFT, + true); + obj->has_global_gtt_mapping = 0; + } - obj->has_global_gtt_mapping = 0; + if (obj->has_aliasing_ppgtt_mapping) { + struct i915_hw_ppgtt *appgtt = dev_priv->mm.aliasing_ppgtt; + appgtt->base.clear_range(&appgtt->base, + entry, + obj->base.size >> PAGE_SHIFT, + true); + obj->has_aliasing_ppgtt_mapping = 0; + } } void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj) @@ -1446,7 +1511,6 @@ static int i915_gmch_probe(struct drm_device *dev, dev_priv->gtt.do_idle_maps = needs_idle_maps(dev_priv->dev); dev_priv->gtt.base.clear_range = i915_ggtt_clear_range; - dev_priv->gtt.base.insert_entries = i915_ggtt_insert_entries; return 0; } @@ -1498,3 +1562,57 @@ int i915_gem_gtt_init(struct drm_device *dev) return 0; } + +static struct i915_vma *__i915_gem_vma_create(struct drm_i915_gem_object *obj, + struct i915_address_space *vm) +{ + struct i915_vma *vma = kzalloc(sizeof(*vma), GFP_KERNEL); + if (vma == NULL) + return ERR_PTR(-ENOMEM); + + INIT_LIST_HEAD(&vma->vma_link); + INIT_LIST_HEAD(&vma->mm_list); + INIT_LIST_HEAD(&vma->exec_list); + vma->vm = vm; + vma->obj = obj; + + switch (INTEL_INFO(vm->dev)->gen) { + case 8: + case 7: + case 6: + vma->unbind_vma = ggtt_unbind_vma; + vma->bind_vma = ggtt_bind_vma; + break; + case 5: + case 4: + case 3: + case 2: + BUG_ON(!i915_is_ggtt(vm)); + vma->unbind_vma = i915_ggtt_unbind_vma; + vma->bind_vma = i915_ggtt_bind_vma; + break; + default: + BUG(); + } + + /* Keep GGTT vmas first to make debug easier */ + if (i915_is_ggtt(vm)) + list_add(&vma->vma_link, &obj->vma_list); + else + list_add_tail(&vma->vma_link, &obj->vma_list); + + return vma; +} + +struct i915_vma * +i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj, + struct i915_address_space *vm) +{ + struct i915_vma *vma; + + vma = i915_gem_obj_to_vma(obj, vm); + if (!vma) + vma = __i915_gem_vma_create(obj, vm); + + return vma; +} |