blob: 4be3a331b5f0579618ac052847709d2906e59169 [file] [log] [blame]
From df38f653b5913040aa286a391a3b3ab7964e6eb6 Mon Sep 17 00:00:00 2001
From: Ben Widawsky <ben@bwidawsk.net>
Date: Wed, 31 Jul 2013 17:00:02 -0700
Subject: drm/i915: thread address space through execbuf
This represents the first half of hooking up VMs to execbuf. Here we
basically pass an address space all around to the different internal
functions. It should be much more readable, and have less risk than the
second half, which begins switching over to using VMAs instead of an
obj,vm.
The overall series echoes this style of, "add a VM, then make it smart
later"
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Switch a BUG_ON to WARN_ON.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 28d6a7bfa2560cb94727a68511ed68561e84dcc8)
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
---
drivers/gpu/drm/i915/i915_gem_execbuffer.c | 77 ++++++++++++++++++-----------
1 file changed, 49 insertions(+), 28 deletions(-)
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -174,7 +174,8 @@ static inline int use_cpu_reloc(struct d
static int
i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj,
struct eb_objects *eb,
- struct drm_i915_gem_relocation_entry *reloc)
+ struct drm_i915_gem_relocation_entry *reloc,
+ struct i915_address_space *vm)
{
struct drm_device *dev = obj->base.dev;
struct drm_gem_object *target_obj;
@@ -297,7 +298,8 @@ i915_gem_execbuffer_relocate_entry(struc
static int
i915_gem_execbuffer_relocate_object(struct drm_i915_gem_object *obj,
- struct eb_objects *eb)
+ struct eb_objects *eb,
+ struct i915_address_space *vm)
{
#define N_RELOC(x) ((x) / sizeof(struct drm_i915_gem_relocation_entry))
struct drm_i915_gem_relocation_entry stack_reloc[N_RELOC(512)];
@@ -321,7 +323,8 @@ i915_gem_execbuffer_relocate_object(stru
do {
u64 offset = r->presumed_offset;
- ret = i915_gem_execbuffer_relocate_entry(obj, eb, r);
+ ret = i915_gem_execbuffer_relocate_entry(obj, eb, r,
+ vm);
if (ret)
return ret;
@@ -344,13 +347,15 @@ i915_gem_execbuffer_relocate_object(stru
static int
i915_gem_execbuffer_relocate_object_slow(struct drm_i915_gem_object *obj,
struct eb_objects *eb,
- struct drm_i915_gem_relocation_entry *relocs)
+ struct drm_i915_gem_relocation_entry *relocs,
+ struct i915_address_space *vm)
{
const struct drm_i915_gem_exec_object2 *entry = obj->exec_entry;
int i, ret;
for (i = 0; i < entry->relocation_count; i++) {
- ret = i915_gem_execbuffer_relocate_entry(obj, eb, &relocs[i]);
+ ret = i915_gem_execbuffer_relocate_entry(obj, eb, &relocs[i],
+ vm);
if (ret)
return ret;
}
@@ -359,7 +364,8 @@ i915_gem_execbuffer_relocate_object_slow
}
static int
-i915_gem_execbuffer_relocate(struct eb_objects *eb)
+i915_gem_execbuffer_relocate(struct eb_objects *eb,
+ struct i915_address_space *vm)
{
struct drm_i915_gem_object *obj;
int ret = 0;
@@ -373,7 +379,7 @@ i915_gem_execbuffer_relocate(struct eb_o
*/
pagefault_disable();
list_for_each_entry(obj, &eb->objects, exec_list) {
- ret = i915_gem_execbuffer_relocate_object(obj, eb);
+ ret = i915_gem_execbuffer_relocate_object(obj, eb, vm);
if (ret)
break;
}
@@ -395,6 +401,7 @@ need_reloc_mappable(struct drm_i915_gem_
static int
i915_gem_execbuffer_reserve_object(struct drm_i915_gem_object *obj,
struct intel_ring_buffer *ring,
+ struct i915_address_space *vm,
bool *need_reloc)
{
struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
@@ -409,9 +416,8 @@ i915_gem_execbuffer_reserve_object(struc
obj->tiling_mode != I915_TILING_NONE;
need_mappable = need_fence || need_reloc_mappable(obj);
- /* FIXME: vm plubming */
- ret = i915_gem_object_pin(obj, &dev_priv->gtt.base, entry->alignment,
- need_mappable, false);
+ ret = i915_gem_object_pin(obj, vm, entry->alignment, need_mappable,
+ false);
if (ret)
return ret;
@@ -438,8 +444,8 @@ i915_gem_execbuffer_reserve_object(struc
obj->has_aliasing_ppgtt_mapping = 1;
}
- if (entry->offset != i915_gem_obj_ggtt_offset(obj)) {
- entry->offset = i915_gem_obj_ggtt_offset(obj);
+ if (entry->offset != i915_gem_obj_offset(obj, vm)) {
+ entry->offset = i915_gem_obj_offset(obj, vm);
*need_reloc = true;
}
@@ -477,6 +483,7 @@ i915_gem_execbuffer_unreserve_object(str
static int
i915_gem_execbuffer_reserve(struct intel_ring_buffer *ring,
struct list_head *objects,
+ struct i915_address_space *vm,
bool *need_relocs)
{
struct drm_i915_gem_object *obj;
@@ -531,32 +538,37 @@ i915_gem_execbuffer_reserve(struct intel
list_for_each_entry(obj, objects, exec_list) {
struct drm_i915_gem_exec_object2 *entry = obj->exec_entry;
bool need_fence, need_mappable;
+ u32 obj_offset;
- if (!i915_gem_obj_ggtt_bound(obj))
+ if (!i915_gem_obj_bound(obj, vm))
continue;
+ obj_offset = i915_gem_obj_offset(obj, vm);
need_fence =
has_fenced_gpu_access &&
entry->flags & EXEC_OBJECT_NEEDS_FENCE &&
obj->tiling_mode != I915_TILING_NONE;
need_mappable = need_fence || need_reloc_mappable(obj);
+ WARN_ON((need_mappable || need_fence) &&
+ !i915_is_ggtt(vm));
+
if ((entry->alignment &&
- i915_gem_obj_ggtt_offset(obj) & (entry->alignment - 1)) ||
+ obj_offset & (entry->alignment - 1)) ||
(need_mappable && !obj->map_and_fenceable))
ret = i915_gem_object_unbind(obj);
else
- ret = i915_gem_execbuffer_reserve_object(obj, ring, need_relocs);
+ ret = i915_gem_execbuffer_reserve_object(obj, ring, vm, need_relocs);
if (ret)
goto err;
}
/* Bind fresh objects */
list_for_each_entry(obj, objects, exec_list) {
- if (i915_gem_obj_ggtt_bound(obj))
+ if (i915_gem_obj_bound(obj, vm))
continue;
- ret = i915_gem_execbuffer_reserve_object(obj, ring, need_relocs);
+ ret = i915_gem_execbuffer_reserve_object(obj, ring, vm, need_relocs);
if (ret)
goto err;
}
@@ -580,7 +592,8 @@ i915_gem_execbuffer_relocate_slow(struct
struct drm_file *file,
struct intel_ring_buffer *ring,
struct eb_objects *eb,
- struct drm_i915_gem_exec_object2 *exec)
+ struct drm_i915_gem_exec_object2 *exec,
+ struct i915_address_space *vm)
{
struct drm_i915_gem_relocation_entry *reloc;
struct drm_i915_gem_object *obj;
@@ -664,14 +677,15 @@ i915_gem_execbuffer_relocate_slow(struct
goto err;
need_relocs = (args->flags & I915_EXEC_NO_RELOC) == 0;
- ret = i915_gem_execbuffer_reserve(ring, &eb->objects, &need_relocs);
+ ret = i915_gem_execbuffer_reserve(ring, &eb->objects, vm, &need_relocs);
if (ret)
goto err;
list_for_each_entry(obj, &eb->objects, exec_list) {
int offset = obj->exec_entry - exec;
ret = i915_gem_execbuffer_relocate_object_slow(obj, eb,
- reloc + reloc_offset[offset]);
+ reloc + reloc_offset[offset],
+ vm);
if (ret)
goto err;
}
@@ -772,6 +786,7 @@ validate_exec_list(struct drm_i915_gem_e
static void
i915_gem_execbuffer_move_to_active(struct list_head *objects,
+ struct i915_address_space *vm,
struct intel_ring_buffer *ring)
{
struct drm_i915_gem_object *obj;
@@ -840,7 +855,8 @@ static int
i915_gem_do_execbuffer(struct drm_device *dev, void *data,
struct drm_file *file,
struct drm_i915_gem_execbuffer2 *args,
- struct drm_i915_gem_exec_object2 *exec)
+ struct drm_i915_gem_exec_object2 *exec,
+ struct i915_address_space *vm)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct eb_objects *eb;
@@ -1002,17 +1018,17 @@ i915_gem_do_execbuffer(struct drm_device
/* 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->objects, &need_relocs);
+ ret = i915_gem_execbuffer_reserve(ring, &eb->objects, vm, &need_relocs);
if (ret)
goto err;
/* The objects are in their final locations, apply the relocations. */
if (need_relocs)
- ret = i915_gem_execbuffer_relocate(eb);
+ ret = i915_gem_execbuffer_relocate(eb, vm);
if (ret) {
if (ret == -EFAULT) {
ret = i915_gem_execbuffer_relocate_slow(dev, args, file, ring,
- eb, exec);
+ eb, exec, vm);
BUG_ON(!mutex_is_locked(&dev->struct_mutex));
}
if (ret)
@@ -1063,7 +1079,8 @@ i915_gem_do_execbuffer(struct drm_device
goto err;
}
- exec_start = i915_gem_obj_ggtt_offset(batch_obj) + args->batch_start_offset;
+ exec_start = i915_gem_obj_offset(batch_obj, vm) +
+ args->batch_start_offset;
exec_len = args->batch_len;
if (cliprects) {
for (i = 0; i < args->num_cliprects; i++) {
@@ -1088,7 +1105,7 @@ i915_gem_do_execbuffer(struct drm_device
trace_i915_gem_ring_dispatch(ring, intel_ring_get_seqno(ring), flags);
- i915_gem_execbuffer_move_to_active(&eb->objects, ring);
+ i915_gem_execbuffer_move_to_active(&eb->objects, vm, ring);
i915_gem_execbuffer_retire_commands(dev, file, ring, batch_obj);
err:
@@ -1109,6 +1126,7 @@ int
i915_gem_execbuffer(struct drm_device *dev, void *data,
struct drm_file *file)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_execbuffer *args = data;
struct drm_i915_gem_execbuffer2 exec2;
struct drm_i915_gem_exec_object *exec_list = NULL;
@@ -1164,7 +1182,8 @@ i915_gem_execbuffer(struct drm_device *d
exec2.flags = I915_EXEC_RENDER;
i915_execbuffer2_set_context_id(exec2, 0);
- ret = i915_gem_do_execbuffer(dev, data, file, &exec2, exec2_list);
+ ret = i915_gem_do_execbuffer(dev, data, file, &exec2, exec2_list,
+ &dev_priv->gtt.base);
if (!ret) {
struct drm_i915_gem_exec_object __user *user_exec_list =
to_user_ptr(args->buffers_ptr);
@@ -1193,6 +1212,7 @@ int
i915_gem_execbuffer2(struct drm_device *dev, void *data,
struct drm_file *file)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_execbuffer2 *args = data;
struct drm_i915_gem_exec_object2 *exec2_list = NULL;
int ret;
@@ -1223,7 +1243,8 @@ i915_gem_execbuffer2(struct drm_device *
return -EFAULT;
}
- ret = i915_gem_do_execbuffer(dev, data, file, args, exec2_list);
+ ret = i915_gem_do_execbuffer(dev, data, file, args, exec2_list,
+ &dev_priv->gtt.base);
if (!ret) {
/* Copy the new buffer offsets back to the user's exec list. */
struct drm_i915_gem_exec_object2 *user_exec_list =