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authorChristian König <christian.koenig@amd.com>2014-08-27 13:16:04 +0200
committerChristian König <christian.koenig@amd.com>2014-08-27 13:16:04 +0200
commitf1217ed09f827e42a49ffa6a5aab672aa6f57a65 (patch)
treeab6a78bc2f7b0d42165eb647e13e87f92b97f149 /drivers/gpu/drm/ttm
parentMerge branch 'drm-next-3.18' of git://people.freedesktop.org/~agd5f/linux int... (diff)
downloadlinux-f1217ed09f827e42a49ffa6a5aab672aa6f57a65.tar.xz
linux-f1217ed09f827e42a49ffa6a5aab672aa6f57a65.zip
drm/ttm: move fpfn and lpfn into each placement v2
This allows us to more fine grained specify where to place the buffer object. v2: rebased on drm-next, add bochs changes as well Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/ttm')
-rw-r--r--drivers/gpu/drm/ttm/ttm_bo.c93
-rw-r--r--drivers/gpu/drm/ttm/ttm_bo_manager.c9
2 files changed, 43 insertions, 59 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 3da89d5dab60..b992ec3c318a 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -53,12 +53,13 @@ static struct attribute ttm_bo_count = {
.mode = S_IRUGO
};
-static inline int ttm_mem_type_from_flags(uint32_t flags, uint32_t *mem_type)
+static inline int ttm_mem_type_from_place(const struct ttm_place *place,
+ uint32_t *mem_type)
{
int i;
for (i = 0; i <= TTM_PL_PRIV5; i++)
- if (flags & (1 << i)) {
+ if (place->flags & (1 << i)) {
*mem_type = i;
return 0;
}
@@ -89,12 +90,12 @@ static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo,
bo, bo->mem.num_pages, bo->mem.size >> 10,
bo->mem.size >> 20);
for (i = 0; i < placement->num_placement; i++) {
- ret = ttm_mem_type_from_flags(placement->placement[i],
+ ret = ttm_mem_type_from_place(&placement->placement[i],
&mem_type);
if (ret)
return;
pr_err(" placement[%d]=0x%08X (%d)\n",
- i, placement->placement[i], mem_type);
+ i, placement->placement[i].flags, mem_type);
ttm_mem_type_debug(bo->bdev, mem_type);
}
}
@@ -685,8 +686,6 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible,
evict_mem.bus.io_reserved_vm = false;
evict_mem.bus.io_reserved_count = 0;
- placement.fpfn = 0;
- placement.lpfn = 0;
placement.num_placement = 0;
placement.num_busy_placement = 0;
bdev->driver->evict_flags(bo, &placement);
@@ -774,7 +773,7 @@ EXPORT_SYMBOL(ttm_bo_mem_put);
*/
static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo,
uint32_t mem_type,
- struct ttm_placement *placement,
+ const struct ttm_place *place,
struct ttm_mem_reg *mem,
bool interruptible,
bool no_wait_gpu)
@@ -784,7 +783,7 @@ static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo,
int ret;
do {
- ret = (*man->func->get_node)(man, bo, placement, 0, mem);
+ ret = (*man->func->get_node)(man, bo, place, mem);
if (unlikely(ret != 0))
return ret;
if (mem->mm_node)
@@ -827,18 +826,18 @@ static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man,
static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man,
uint32_t mem_type,
- uint32_t proposed_placement,
+ const struct ttm_place *place,
uint32_t *masked_placement)
{
uint32_t cur_flags = ttm_bo_type_flags(mem_type);
- if ((cur_flags & proposed_placement & TTM_PL_MASK_MEM) == 0)
+ if ((cur_flags & place->flags & TTM_PL_MASK_MEM) == 0)
return false;
- if ((proposed_placement & man->available_caching) == 0)
+ if ((place->flags & man->available_caching) == 0)
return false;
- cur_flags |= (proposed_placement & man->available_caching);
+ cur_flags |= (place->flags & man->available_caching);
*masked_placement = cur_flags;
return true;
@@ -869,15 +868,14 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
mem->mm_node = NULL;
for (i = 0; i < placement->num_placement; ++i) {
- ret = ttm_mem_type_from_flags(placement->placement[i],
- &mem_type);
+ const struct ttm_place *place = &placement->placement[i];
+
+ ret = ttm_mem_type_from_place(place, &mem_type);
if (ret)
return ret;
man = &bdev->man[mem_type];
- type_ok = ttm_bo_mt_compatible(man,
- mem_type,
- placement->placement[i],
+ type_ok = ttm_bo_mt_compatible(man, mem_type, place,
&cur_flags);
if (!type_ok)
@@ -889,7 +887,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
* Use the access and other non-mapping-related flag bits from
* the memory placement flags to the current flags
*/
- ttm_flag_masked(&cur_flags, placement->placement[i],
+ ttm_flag_masked(&cur_flags, place->flags,
~TTM_PL_MASK_MEMTYPE);
if (mem_type == TTM_PL_SYSTEM)
@@ -897,8 +895,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
if (man->has_type && man->use_type) {
type_found = true;
- ret = (*man->func->get_node)(man, bo, placement,
- cur_flags, mem);
+ ret = (*man->func->get_node)(man, bo, place, mem);
if (unlikely(ret))
return ret;
}
@@ -916,17 +913,15 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
return -EINVAL;
for (i = 0; i < placement->num_busy_placement; ++i) {
- ret = ttm_mem_type_from_flags(placement->busy_placement[i],
- &mem_type);
+ const struct ttm_place *place = &placement->busy_placement[i];
+
+ ret = ttm_mem_type_from_place(place, &mem_type);
if (ret)
return ret;
man = &bdev->man[mem_type];
if (!man->has_type)
continue;
- if (!ttm_bo_mt_compatible(man,
- mem_type,
- placement->busy_placement[i],
- &cur_flags))
+ if (!ttm_bo_mt_compatible(man, mem_type, place, &cur_flags))
continue;
cur_flags = ttm_bo_select_caching(man, bo->mem.placement,
@@ -935,7 +930,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
* Use the access and other non-mapping-related flag bits from
* the memory placement flags to the current flags
*/
- ttm_flag_masked(&cur_flags, placement->busy_placement[i],
+ ttm_flag_masked(&cur_flags, place->flags,
~TTM_PL_MASK_MEMTYPE);
if (mem_type == TTM_PL_SYSTEM) {
@@ -945,7 +940,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
return 0;
}
- ret = ttm_bo_mem_force_space(bo, mem_type, placement, mem,
+ ret = ttm_bo_mem_force_space(bo, mem_type, place, mem,
interruptible, no_wait_gpu);
if (ret == 0 && mem->mm_node) {
mem->placement = cur_flags;
@@ -1006,20 +1001,27 @@ static bool ttm_bo_mem_compat(struct ttm_placement *placement,
{
int i;
- if (mem->mm_node && placement->lpfn != 0 &&
- (mem->start < placement->fpfn ||
- mem->start + mem->num_pages > placement->lpfn))
- return false;
-
for (i = 0; i < placement->num_placement; i++) {
- *new_flags = placement->placement[i];
+ const struct ttm_place *heap = &placement->placement[i];
+ if (mem->mm_node && heap->lpfn != 0 &&
+ (mem->start < heap->fpfn ||
+ mem->start + mem->num_pages > heap->lpfn))
+ continue;
+
+ *new_flags = heap->flags;
if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) &&
(*new_flags & mem->placement & TTM_PL_MASK_MEM))
return true;
}
for (i = 0; i < placement->num_busy_placement; i++) {
- *new_flags = placement->busy_placement[i];
+ const struct ttm_place *heap = &placement->busy_placement[i];
+ if (mem->mm_node && heap->lpfn != 0 &&
+ (mem->start < heap->fpfn ||
+ mem->start + mem->num_pages > heap->lpfn))
+ continue;
+
+ *new_flags = heap->flags;
if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) &&
(*new_flags & mem->placement & TTM_PL_MASK_MEM))
return true;
@@ -1037,11 +1039,6 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
uint32_t new_flags;
lockdep_assert_held(&bo->resv->lock.base);
- /* Check that range is valid */
- if (placement->lpfn || placement->fpfn)
- if (placement->fpfn > placement->lpfn ||
- (placement->lpfn - placement->fpfn) < bo->num_pages)
- return -EINVAL;
/*
* Check whether we need to move buffer.
*/
@@ -1070,15 +1067,6 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
}
EXPORT_SYMBOL(ttm_bo_validate);
-int ttm_bo_check_placement(struct ttm_buffer_object *bo,
- struct ttm_placement *placement)
-{
- BUG_ON((placement->fpfn || placement->lpfn) &&
- (bo->mem.num_pages > (placement->lpfn - placement->fpfn)));
-
- return 0;
-}
-
int ttm_bo_init(struct ttm_bo_device *bdev,
struct ttm_buffer_object *bo,
unsigned long size,
@@ -1147,15 +1135,12 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
atomic_inc(&bo->glob->bo_count);
drm_vma_node_reset(&bo->vma_node);
- ret = ttm_bo_check_placement(bo, placement);
-
/*
* For ttm_bo_type_device buffers, allocate
* address space from the device.
*/
- if (likely(!ret) &&
- (bo->type == ttm_bo_type_device ||
- bo->type == ttm_bo_type_sg))
+ if (bo->type == ttm_bo_type_device ||
+ bo->type == ttm_bo_type_sg)
ret = drm_vma_offset_add(&bdev->vma_manager, &bo->vma_node,
bo->mem.num_pages);
diff --git a/drivers/gpu/drm/ttm/ttm_bo_manager.c b/drivers/gpu/drm/ttm/ttm_bo_manager.c
index 9e103a4875c8..964387fc5c8f 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_manager.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_manager.c
@@ -49,8 +49,7 @@ struct ttm_range_manager {
static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
struct ttm_buffer_object *bo,
- struct ttm_placement *placement,
- uint32_t flags,
+ const struct ttm_place *place,
struct ttm_mem_reg *mem)
{
struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv;
@@ -60,7 +59,7 @@ static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
unsigned long lpfn;
int ret;
- lpfn = placement->lpfn;
+ lpfn = place->lpfn;
if (!lpfn)
lpfn = man->size;
@@ -68,13 +67,13 @@ static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
if (!node)
return -ENOMEM;
- if (flags & TTM_PL_FLAG_TOPDOWN)
+ if (place->flags & TTM_PL_FLAG_TOPDOWN)
aflags = DRM_MM_CREATE_TOP;
spin_lock(&rman->lock);
ret = drm_mm_insert_node_in_range_generic(mm, node, mem->num_pages,
mem->page_alignment, 0,
- placement->fpfn, lpfn,
+ place->fpfn, lpfn,
DRM_MM_SEARCH_BEST,
aflags);
spin_unlock(&rman->lock);