drm/i915: Merged the many do_execbuf() parameters into a structure
[deliverable/linux.git] / drivers / gpu / drm / i915 / i915_gem_execbuffer.c
index a3190e793ed43744980bedba4ed42e1d0e38d597..c5f879e594c4cb76e3141b30dbf213e2ecfeca3a 100644 (file)
@@ -37,7 +37,6 @@
 #define  __EXEC_OBJECT_HAS_FENCE (1<<30)
 #define  __EXEC_OBJECT_NEEDS_MAP (1<<29)
 #define  __EXEC_OBJECT_NEEDS_BIAS (1<<28)
-#define  __EXEC_OBJECT_PURGEABLE (1<<27)
 
 #define BATCH_OFFSET_BIAS (256*1024)
 
@@ -224,12 +223,7 @@ i915_gem_execbuffer_unreserve_vma(struct i915_vma *vma)
        if (entry->flags & __EXEC_OBJECT_HAS_PIN)
                vma->pin_count--;
 
-       if (entry->flags & __EXEC_OBJECT_PURGEABLE)
-               obj->madv = I915_MADV_DONTNEED;
-
-       entry->flags &= ~(__EXEC_OBJECT_HAS_FENCE |
-                         __EXEC_OBJECT_HAS_PIN |
-                         __EXEC_OBJECT_PURGEABLE);
+       entry->flags &= ~(__EXEC_OBJECT_HAS_FENCE | __EXEC_OBJECT_HAS_PIN);
 }
 
 static void eb_destroy(struct eb_vmas *eb)
@@ -406,10 +400,9 @@ i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj,
         * pipe_control writes because the gpu doesn't properly redirect them
         * through the ppgtt for non_secure batchbuffers. */
        if (unlikely(IS_GEN6(dev) &&
-           reloc->write_domain == I915_GEM_DOMAIN_INSTRUCTION &&
-           !(target_vma->bound & GLOBAL_BIND))) {
+           reloc->write_domain == I915_GEM_DOMAIN_INSTRUCTION)) {
                ret = i915_vma_bind(target_vma, target_i915_obj->cache_level,
-                                   GLOBAL_BIND);
+                                   PIN_GLOBAL);
                if (WARN_ONCE(ret, "Unexpected failure to bind target VMA!"))
                        return ret;
        }
@@ -591,12 +584,13 @@ i915_gem_execbuffer_reserve_vma(struct i915_vma *vma,
        uint64_t flags;
        int ret;
 
-       flags = 0;
+       flags = PIN_USER;
+       if (entry->flags & EXEC_OBJECT_NEEDS_GTT)
+               flags |= PIN_GLOBAL;
+
        if (!drm_mm_node_allocated(&vma->node)) {
                if (entry->flags & __EXEC_OBJECT_NEEDS_MAP)
                        flags |= PIN_GLOBAL | PIN_MAPPABLE;
-               if (entry->flags & EXEC_OBJECT_NEEDS_GTT)
-                       flags |= PIN_GLOBAL;
                if (entry->flags & __EXEC_OBJECT_NEEDS_BIAS)
                        flags |= BATCH_OFFSET_BIAS | PIN_OFFSET_BIAS;
        }
@@ -606,7 +600,7 @@ i915_gem_execbuffer_reserve_vma(struct i915_vma *vma,
            only_mappable_for_reloc(entry->flags))
                ret = i915_gem_object_pin(obj, vma->vm,
                                          entry->alignment,
-                                         flags & ~(PIN_GLOBAL | PIN_MAPPABLE));
+                                         flags & ~PIN_MAPPABLE);
        if (ret)
                return ret;
 
@@ -682,6 +676,7 @@ eb_vma_misplaced(struct i915_vma *vma)
 static int
 i915_gem_execbuffer_reserve(struct intel_engine_cs *ring,
                            struct list_head *vmas,
+                           struct intel_context *ctx,
                            bool *need_relocs)
 {
        struct drm_i915_gem_object *obj;
@@ -704,6 +699,9 @@ i915_gem_execbuffer_reserve(struct intel_engine_cs *ring,
                obj = vma->obj;
                entry = vma->exec_entry;
 
+               if (ctx->flags & CONTEXT_NO_ZEROMAP)
+                       entry->flags |= __EXEC_OBJECT_NEEDS_BIAS;
+
                if (!has_fenced_gpu_access)
                        entry->flags &= ~EXEC_OBJECT_NEEDS_FENCE;
                need_fence =
@@ -781,7 +779,8 @@ i915_gem_execbuffer_relocate_slow(struct drm_device *dev,
                                  struct drm_file *file,
                                  struct intel_engine_cs *ring,
                                  struct eb_vmas *eb,
-                                 struct drm_i915_gem_exec_object2 *exec)
+                                 struct drm_i915_gem_exec_object2 *exec,
+                                 struct intel_context *ctx)
 {
        struct drm_i915_gem_relocation_entry *reloc;
        struct i915_address_space *vm;
@@ -867,7 +866,7 @@ i915_gem_execbuffer_relocate_slow(struct drm_device *dev,
                goto err;
 
        need_relocs = (args->flags & I915_EXEC_NO_RELOC) == 0;
-       ret = i915_gem_execbuffer_reserve(ring, &eb->vmas, &need_relocs);
+       ret = i915_gem_execbuffer_reserve(ring, &eb->vmas, ctx, &need_relocs);
        if (ret)
                goto err;
 
@@ -895,6 +894,7 @@ static int
 i915_gem_execbuffer_move_to_gpu(struct intel_engine_cs *ring,
                                struct list_head *vmas)
 {
+       const unsigned other_rings = ~intel_ring_flag(ring);
        struct i915_vma *vma;
        uint32_t flush_domains = 0;
        bool flush_chipset = false;
@@ -902,9 +902,12 @@ i915_gem_execbuffer_move_to_gpu(struct intel_engine_cs *ring,
 
        list_for_each_entry(vma, vmas, exec_list) {
                struct drm_i915_gem_object *obj = vma->obj;
-               ret = i915_gem_object_sync(obj, ring);
-               if (ret)
-                       return ret;
+
+               if (obj->active & other_rings) {
+                       ret = i915_gem_object_sync(obj, ring);
+                       if (ret)
+                               return ret;
+               }
 
                if (obj->base.write_domain & I915_GEM_DOMAIN_CPU)
                        flush_chipset |= i915_gem_clflush_object(obj, false);
@@ -954,6 +957,9 @@ validate_exec_list(struct drm_device *dev,
                if (exec[i].flags & invalid_flags)
                        return -EINVAL;
 
+               if (exec[i].alignment && !is_power_of_2(exec[i].alignment))
+                       return -EINVAL;
+
                /* First check for malicious input causing overflow in
                 * the worst case where we need to allocate the entire
                 * relocation tree as a single array.
@@ -1035,7 +1041,7 @@ i915_gem_execbuffer_move_to_active(struct list_head *vmas,
                        obj->dirty = 1;
                        i915_gem_request_assign(&obj->last_write_req, req);
 
-                       intel_fb_obj_invalidate(obj, ring, ORIGIN_CS);
+                       intel_fb_obj_invalidate(obj, ORIGIN_CS);
 
                        /* update for the implicit flush after a batch */
                        obj->base.write_domain &= ~I915_GEM_GPU_DOMAINS;
@@ -1063,7 +1069,7 @@ i915_gem_execbuffer_retire_commands(struct drm_device *dev,
        ring->gpu_caches_dirty = true;
 
        /* Add a breadcrumb for the completion of the batch buffer */
-       (void)__i915_add_request(ring, file, obj);
+       __i915_add_request(ring, file, obj);
 }
 
 static int
@@ -1142,12 +1148,11 @@ i915_gem_execbuffer_parse(struct intel_engine_cs *ring,
                          u32 batch_len,
                          bool is_master)
 {
-       struct drm_i915_private *dev_priv = to_i915(batch_obj->base.dev);
        struct drm_i915_gem_object *shadow_batch_obj;
        struct i915_vma *vma;
        int ret;
 
-       shadow_batch_obj = i915_gem_batch_pool_get(&dev_priv->mm.batch_pool,
+       shadow_batch_obj = i915_gem_batch_pool_get(&ring->batch_pool,
                                                   PAGE_ALIGN(batch_len));
        if (IS_ERR(shadow_batch_obj))
                return shadow_batch_obj;
@@ -1165,11 +1170,13 @@ i915_gem_execbuffer_parse(struct intel_engine_cs *ring,
        if (ret)
                goto err;
 
+       i915_gem_object_unpin_pages(shadow_batch_obj);
+
        memset(shadow_exec_entry, 0, sizeof(*shadow_exec_entry));
 
        vma = i915_gem_obj_to_ggtt(shadow_batch_obj);
        vma->exec_entry = shadow_exec_entry;
-       vma->exec_entry->flags = __EXEC_OBJECT_PURGEABLE | __EXEC_OBJECT_HAS_PIN;
+       vma->exec_entry->flags = __EXEC_OBJECT_HAS_PIN;
        drm_gem_object_reference(&shadow_batch_obj->base);
        list_add_tail(&vma->exec_list, &eb->vmas);
 
@@ -1178,6 +1185,7 @@ i915_gem_execbuffer_parse(struct intel_engine_cs *ring,
        return shadow_batch_obj;
 
 err:
+       i915_gem_object_unpin_pages(shadow_batch_obj);
        if (ret == -EACCES) /* unhandled chained batch */
                return batch_obj;
        else
@@ -1185,17 +1193,15 @@ err:
 }
 
 int
-i915_gem_ringbuffer_submission(struct drm_device *dev, struct drm_file *file,
-                              struct intel_engine_cs *ring,
-                              struct intel_context *ctx,
+i915_gem_ringbuffer_submission(struct i915_execbuffer_params *params,
                               struct drm_i915_gem_execbuffer2 *args,
-                              struct list_head *vmas,
-                              struct drm_i915_gem_object *batch_obj,
-                              u64 exec_start, u32 dispatch_flags)
+                              struct list_head *vmas)
 {
        struct drm_clip_rect *cliprects = NULL;
+       struct drm_device *dev = params->dev;
+       struct intel_engine_cs *ring = params->ring;
        struct drm_i915_private *dev_priv = dev->dev_private;
-       u64 exec_len;
+       u64 exec_start, exec_len;
        int instp_mode;
        u32 instp_mask;
        int i, ret = 0;
@@ -1247,16 +1253,12 @@ i915_gem_ringbuffer_submission(struct drm_device *dev, struct drm_file *file,
        if (ret)
                goto error;
 
-       ret = i915_switch_context(ring, ctx);
+       ret = i915_switch_context(ring, params->ctx);
        if (ret)
                goto error;
 
-       if (ctx->ppgtt)
-               WARN(ctx->ppgtt->pd_dirty_rings & (1<<ring->id),
-                       "%s didn't clear reload\n", ring->name);
-       else if (dev_priv->mm.aliasing_ppgtt)
-               WARN(dev_priv->mm.aliasing_ppgtt->pd_dirty_rings &
-                       (1<<ring->id), "%s didn't clear reload\n", ring->name);
+       WARN(params->ctx->ppgtt && params->ctx->ppgtt->pd_dirty_rings & (1<<ring->id),
+            "%s didn't clear reload\n", ring->name);
 
        instp_mode = args->flags & I915_EXEC_CONSTANTS_MASK;
        instp_mask = I915_EXEC_CONSTANTS_MASK;
@@ -1316,7 +1318,10 @@ i915_gem_ringbuffer_submission(struct drm_device *dev, struct drm_file *file,
                        goto error;
        }
 
-       exec_len = args->batch_len;
+       exec_len   = args->batch_len;
+       exec_start = params->batch_obj_vm_offset +
+                    params->args_batch_start_offset;
+
        if (cliprects) {
                for (i = 0; i < args->num_cliprects; i++) {
                        ret = i915_emit_box(ring, &cliprects[i],
@@ -1326,22 +1331,23 @@ i915_gem_ringbuffer_submission(struct drm_device *dev, struct drm_file *file,
 
                        ret = ring->dispatch_execbuffer(ring,
                                                        exec_start, exec_len,
-                                                       dispatch_flags);
+                                                       params->dispatch_flags);
                        if (ret)
                                goto error;
                }
        } else {
                ret = ring->dispatch_execbuffer(ring,
                                                exec_start, exec_len,
-                                               dispatch_flags);
+                                               params->dispatch_flags);
                if (ret)
                        return ret;
        }
 
-       trace_i915_gem_ring_dispatch(intel_ring_get_request(ring), dispatch_flags);
+       trace_i915_gem_ring_dispatch(intel_ring_get_request(ring), params->dispatch_flags);
 
        i915_gem_execbuffer_move_to_active(vmas, ring);
-       i915_gem_execbuffer_retire_commands(dev, file, ring, batch_obj);
+       i915_gem_execbuffer_retire_commands(params->dev, params->file, ring,
+                                           params->batch_obj);
 
 error:
        kfree(cliprects);
@@ -1411,8 +1417,9 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
        struct intel_engine_cs *ring;
        struct intel_context *ctx;
        struct i915_address_space *vm;
+       struct i915_execbuffer_params params_master; /* XXX: will be removed later */
+       struct i915_execbuffer_params *params = &params_master;
        const u32 ctx_id = i915_execbuffer2_get_context_id(*args);
-       u64 exec_start = args->batch_start_offset;
        u32 dispatch_flags;
        int ret;
        bool need_relocs;
@@ -1505,6 +1512,8 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
        else
                vm = &dev_priv->gtt.base;
 
+       memset(&params_master, 0x00, sizeof(params_master));
+
        eb = eb_create(args);
        if (eb == NULL) {
                i915_gem_context_unreference(ctx);
@@ -1523,7 +1532,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
 
        /* Move the objects en-masse into the GTT, evicting if necessary. */
        need_relocs = (args->flags & I915_EXEC_NO_RELOC) == 0;
-       ret = i915_gem_execbuffer_reserve(ring, &eb->vmas, &need_relocs);
+       ret = i915_gem_execbuffer_reserve(ring, &eb->vmas, ctx, &need_relocs);
        if (ret)
                goto err;
 
@@ -1533,7 +1542,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
        if (ret) {
                if (ret == -EFAULT) {
                        ret = i915_gem_execbuffer_relocate_slow(dev, args, file, ring,
-                                                               eb, exec);
+                                                               eb, exec, ctx);
                        BUG_ON(!mutex_is_locked(&dev->struct_mutex));
                }
                if (ret)
@@ -1547,34 +1556,41 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
                goto err;
        }
 
+       params->args_batch_start_offset = args->batch_start_offset;
        if (i915_needs_cmd_parser(ring) && args->batch_len) {
-               batch_obj = i915_gem_execbuffer_parse(ring,
+               struct drm_i915_gem_object *parsed_batch_obj;
+
+               parsed_batch_obj = i915_gem_execbuffer_parse(ring,
                                                      &shadow_exec_entry,
                                                      eb,
                                                      batch_obj,
                                                      args->batch_start_offset,
                                                      args->batch_len,
                                                      file->is_master);
-               if (IS_ERR(batch_obj)) {
-                       ret = PTR_ERR(batch_obj);
+               if (IS_ERR(parsed_batch_obj)) {
+                       ret = PTR_ERR(parsed_batch_obj);
                        goto err;
                }
 
                /*
-                * Set the DISPATCH_SECURE bit to remove the NON_SECURE
-                * bit from MI_BATCH_BUFFER_START commands issued in the
-                * dispatch_execbuffer implementations. We specifically
-                * don't want that set when the command parser is
-                * enabled.
-                *
-                * FIXME: with aliasing ppgtt, buffers that should only
-                * be in ggtt still end up in the aliasing ppgtt. remove
-                * this check when that is fixed.
+                * parsed_batch_obj == batch_obj means batch not fully parsed:
+                * Accept, but don't promote to secure.
                 */
-               if (USES_FULL_PPGTT(dev))
-                       dispatch_flags |= I915_DISPATCH_SECURE;
 
-               exec_start = 0;
+               if (parsed_batch_obj != batch_obj) {
+                       /*
+                        * Batch parsed and accepted:
+                        *
+                        * Set the DISPATCH_SECURE bit to remove the NON_SECURE
+                        * bit from MI_BATCH_BUFFER_START commands issued in
+                        * the dispatch_execbuffer implementations. We
+                        * specifically don't want that set on batches the
+                        * command parser has accepted.
+                        */
+                       dispatch_flags |= I915_DISPATCH_SECURE;
+                       params->args_batch_start_offset = 0;
+                       batch_obj = parsed_batch_obj;
+               }
        }
 
        batch_obj->base.pending_read_domains |= I915_GEM_DOMAIN_COMMAND;
@@ -1597,14 +1613,31 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
                if (ret)
                        goto err;
 
-               exec_start += i915_gem_obj_ggtt_offset(batch_obj);
+               params->batch_obj_vm_offset = i915_gem_obj_ggtt_offset(batch_obj);
        } else
-               exec_start += i915_gem_obj_offset(batch_obj, vm);
+               params->batch_obj_vm_offset = i915_gem_obj_offset(batch_obj, vm);
 
-       ret = dev_priv->gt.do_execbuf(dev, file, ring, ctx, args,
-                                     &eb->vmas, batch_obj, exec_start,
-                                     dispatch_flags);
+       /* Allocate a request for this batch buffer nice and early. */
+       ret = i915_gem_request_alloc(ring, ctx);
+       if (ret)
+               goto err_batch_unpin;
+
+       /*
+        * Save assorted stuff away to pass through to *_submission().
+        * NB: This data should be 'persistent' and not local as it will
+        * kept around beyond the duration of the IOCTL once the GPU
+        * scheduler arrives.
+        */
+       params->dev                     = dev;
+       params->file                    = file;
+       params->ring                    = ring;
+       params->dispatch_flags          = dispatch_flags;
+       params->batch_obj               = batch_obj;
+       params->ctx                     = ctx;
+
+       ret = dev_priv->gt.execbuf_submit(params, args, &eb->vmas);
 
+err_batch_unpin:
        /*
         * FIXME: We crucially rely upon the active tracking for the (ppgtt)
         * batch vma for correctness. For less ugly and less fragility this
@@ -1613,6 +1646,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
         */
        if (dispatch_flags & I915_DISPATCH_SECURE)
                i915_gem_object_ggtt_unpin(batch_obj);
+
 err:
        /* the request owns the ref now */
        i915_gem_context_unreference(ctx);
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