[PATCH v2 09/17] drm/bochs: Convert bochs driver to |struct drm_gem_vram_object|
Thomas Zimmermann
tzimmermann at suse.de
Wed Apr 24 11:48:34 UTC 2019
The data structure |struct drm_gem_vram_object| and its helpers replace
|struct bochs_bo|. It's the same implementation; except for the type
names.
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
drivers/gpu/drm/bochs/Kconfig | 1 +
drivers/gpu/drm/bochs/bochs.h | 34 +---
drivers/gpu/drm/bochs/bochs_drv.c | 4 +-
drivers/gpu/drm/bochs/bochs_kms.c | 18 +-
drivers/gpu/drm/bochs/bochs_mm.c | 270 +++---------------------------
5 files changed, 34 insertions(+), 293 deletions(-)
diff --git a/drivers/gpu/drm/bochs/Kconfig b/drivers/gpu/drm/bochs/Kconfig
index bd2718015cdb..c04f8041a2b9 100644
--- a/drivers/gpu/drm/bochs/Kconfig
+++ b/drivers/gpu/drm/bochs/Kconfig
@@ -3,6 +3,7 @@ config DRM_BOCHS
depends on DRM && PCI && MMU
select DRM_KMS_HELPER
select DRM_TTM
+ select DRM_GEM_VRAM_HELPER
help
Choose this option for qemu.
If M is selected the module will be called bochs-drm.
diff --git a/drivers/gpu/drm/bochs/bochs.h b/drivers/gpu/drm/bochs/bochs.h
index 341cc9d1bab4..4ccf82e1ca68 100644
--- a/drivers/gpu/drm/bochs/bochs.h
+++ b/drivers/gpu/drm/bochs/bochs.h
@@ -10,6 +10,7 @@
#include <drm/drm_simple_kms_helper.h>
#include <drm/drm_gem.h>
+#include <drm/drm_gem_vram_helper.h>
#include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_page_alloc.h>
@@ -81,30 +82,6 @@ struct bochs_device {
} ttm;
};
-struct bochs_bo {
- struct ttm_buffer_object bo;
- struct ttm_placement placement;
- struct ttm_bo_kmap_obj kmap;
- struct drm_gem_object gem;
- struct ttm_place placements[3];
- int pin_count;
-};
-
-static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
-{
- return container_of(bo, struct bochs_bo, bo);
-}
-
-static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem)
-{
- return container_of(gem, struct bochs_bo, gem);
-}
-
-static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
-{
- return drm_vma_node_offset_addr(&bo->bo.vma_node);
-}
-
/* ---------------------------------------------------------------------- */
/* bochs_hw.c */
@@ -124,17 +101,8 @@ int bochs_mm_init(struct bochs_device *bochs);
void bochs_mm_fini(struct bochs_device *bochs);
int bochs_mmap(struct file *filp, struct vm_area_struct *vma);
-int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
- struct drm_gem_object **obj);
-int bochs_gem_init_object(struct drm_gem_object *obj);
-void bochs_gem_free_object(struct drm_gem_object *obj);
int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
struct drm_mode_create_dumb *args);
-int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
- uint32_t handle, uint64_t *offset);
-
-int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag);
-int bochs_bo_unpin(struct bochs_bo *bo);
int bochs_gem_prime_pin(struct drm_gem_object *obj);
void bochs_gem_prime_unpin(struct drm_gem_object *obj);
diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c
index 6b6e037258c3..4f269f464e6d 100644
--- a/drivers/gpu/drm/bochs/bochs_drv.c
+++ b/drivers/gpu/drm/bochs/bochs_drv.c
@@ -82,9 +82,9 @@ static struct drm_driver bochs_driver = {
.date = "20130925",
.major = 1,
.minor = 0,
- .gem_free_object_unlocked = bochs_gem_free_object,
+ .gem_free_object_unlocked = drm_gem_vram_driver_gem_free_object_unlocked,
.dumb_create = bochs_dumb_create,
- .dumb_map_offset = bochs_dumb_mmap_offset,
+ .dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_import = drm_gem_prime_import,
diff --git a/drivers/gpu/drm/bochs/bochs_kms.c b/drivers/gpu/drm/bochs/bochs_kms.c
index 5e905f50449d..9e3ee7b511fb 100644
--- a/drivers/gpu/drm/bochs/bochs_kms.c
+++ b/drivers/gpu/drm/bochs/bochs_kms.c
@@ -30,16 +30,16 @@ static const uint32_t bochs_formats[] = {
static void bochs_plane_update(struct bochs_device *bochs,
struct drm_plane_state *state)
{
- struct bochs_bo *bo;
+ struct drm_gem_vram_object *gbo;
if (!state->fb || !bochs->stride)
return;
- bo = gem_to_bochs_bo(state->fb->obj[0]);
+ gbo = drm_gem_vram_of_gem(state->fb->obj[0]);
bochs_hw_setbase(bochs,
state->crtc_x,
state->crtc_y,
- bo->bo.offset);
+ gbo->bo.offset);
bochs_hw_setformat(bochs, state->fb->format);
}
@@ -72,23 +72,23 @@ static void bochs_pipe_update(struct drm_simple_display_pipe *pipe,
static int bochs_pipe_prepare_fb(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *new_state)
{
- struct bochs_bo *bo;
+ struct drm_gem_vram_object *gbo;
if (!new_state->fb)
return 0;
- bo = gem_to_bochs_bo(new_state->fb->obj[0]);
- return bochs_bo_pin(bo, TTM_PL_FLAG_VRAM);
+ gbo = drm_gem_vram_of_gem(new_state->fb->obj[0]);
+ return drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM);
}
static void bochs_pipe_cleanup_fb(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *old_state)
{
- struct bochs_bo *bo;
+ struct drm_gem_vram_object *gbo;
if (!old_state->fb)
return;
- bo = gem_to_bochs_bo(old_state->fb->obj[0]);
- bochs_bo_unpin(bo);
+ gbo = drm_gem_vram_of_gem(old_state->fb->obj[0]);
+ drm_gem_vram_unpin(gbo);
}
static const struct drm_simple_display_pipe_funcs bochs_pipe_funcs = {
diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c
index 4a40308169c4..5837adc6ae17 100644
--- a/drivers/gpu/drm/bochs/bochs_mm.c
+++ b/drivers/gpu/drm/bochs/bochs_mm.c
@@ -7,8 +7,6 @@
#include "bochs.h"
-static void bochs_ttm_placement(struct bochs_bo *bo, int domain);
-
/* ---------------------------------------------------------------------- */
static inline struct bochs_device *bochs_bdev(struct ttm_bo_device *bd)
@@ -16,22 +14,6 @@ static inline struct bochs_device *bochs_bdev(struct ttm_bo_device *bd)
return container_of(bd, struct bochs_device, ttm.bdev);
}
-static void bochs_bo_ttm_destroy(struct ttm_buffer_object *tbo)
-{
- struct bochs_bo *bo;
-
- bo = container_of(tbo, struct bochs_bo, bo);
- drm_gem_object_release(&bo->gem);
- kfree(bo);
-}
-
-static bool bochs_ttm_bo_is_bochs_bo(struct ttm_buffer_object *bo)
-{
- if (bo->destroy == &bochs_bo_ttm_destroy)
- return true;
- return false;
-}
-
static int bochs_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
struct ttm_mem_type_manager *man)
{
@@ -56,27 +38,6 @@ static int bochs_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
return 0;
}
-static void
-bochs_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
-{
- struct bochs_bo *bochsbo = bochs_bo(bo);
-
- if (!bochs_ttm_bo_is_bochs_bo(bo))
- return;
-
- bochs_ttm_placement(bochsbo, TTM_PL_FLAG_SYSTEM);
- *pl = bochsbo->placement;
-}
-
-static int bochs_bo_verify_access(struct ttm_buffer_object *bo,
- struct file *filp)
-{
- struct bochs_bo *bochsbo = bochs_bo(bo);
-
- return drm_vma_node_verify_access(&bochsbo->gem.vma_node,
- filp->private_data);
-}
-
static int bochs_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
struct ttm_mem_reg *mem)
{
@@ -141,9 +102,9 @@ static struct ttm_bo_driver bochs_bo_driver = {
.ttm_tt_create = bochs_ttm_tt_create,
.init_mem_type = bochs_bo_init_mem_type,
.eviction_valuable = ttm_bo_eviction_valuable,
- .evict_flags = bochs_bo_evict_flags,
+ .evict_flags = drm_gem_vram_bo_driver_evict_flags,
.move = NULL,
- .verify_access = bochs_bo_verify_access,
+ .verify_access = drm_gem_vram_bo_driver_verify_access,
.io_mem_reserve = &bochs_ttm_io_mem_reserve,
.io_mem_free = &bochs_ttm_io_mem_free,
};
@@ -182,85 +143,6 @@ void bochs_mm_fini(struct bochs_device *bochs)
bochs->ttm.initialized = false;
}
-static void bochs_ttm_placement(struct bochs_bo *bo, int domain)
-{
- unsigned i;
- u32 c = 0;
- bo->placement.placement = bo->placements;
- bo->placement.busy_placement = bo->placements;
- if (domain & TTM_PL_FLAG_VRAM) {
- bo->placements[c++].flags = TTM_PL_FLAG_WC
- | TTM_PL_FLAG_UNCACHED
- | TTM_PL_FLAG_VRAM;
- }
- if (domain & TTM_PL_FLAG_SYSTEM) {
- bo->placements[c++].flags = TTM_PL_MASK_CACHING
- | TTM_PL_FLAG_SYSTEM;
- }
- if (!c) {
- bo->placements[c++].flags = TTM_PL_MASK_CACHING
- | TTM_PL_FLAG_SYSTEM;
- }
- for (i = 0; i < c; ++i) {
- bo->placements[i].fpfn = 0;
- bo->placements[i].lpfn = 0;
- }
- bo->placement.num_placement = c;
- bo->placement.num_busy_placement = c;
-}
-
-int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag)
-{
- struct ttm_operation_ctx ctx = { false, false };
- int i, ret;
-
- if (bo->pin_count) {
- bo->pin_count++;
- return 0;
- }
-
- bochs_ttm_placement(bo, pl_flag);
- for (i = 0; i < bo->placement.num_placement; i++)
- bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
- ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
- if (ret)
- return ret;
- ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
- ttm_bo_unreserve(&bo->bo);
- if (ret)
- return ret;
-
- bo->pin_count = 1;
- return 0;
-}
-
-int bochs_bo_unpin(struct bochs_bo *bo)
-{
- struct ttm_operation_ctx ctx = { false, false };
- int i, ret;
-
- if (!bo->pin_count) {
- DRM_ERROR("unpin bad %p\n", bo);
- return 0;
- }
- bo->pin_count--;
-
- if (bo->pin_count)
- return 0;
-
- for (i = 0; i < bo->placement.num_placement; i++)
- bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
- ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
- if (ret)
- return ret;
- ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx);
- ttm_bo_unreserve(&bo->bo);
- if (ret)
- return ret;
-
- return 0;
-}
-
int bochs_mmap(struct file *filp, struct vm_area_struct *vma)
{
struct drm_file *file_priv = filp->private_data;
@@ -271,171 +153,61 @@ int bochs_mmap(struct file *filp, struct vm_area_struct *vma)
/* ---------------------------------------------------------------------- */
-static int bochs_bo_create(struct drm_device *dev, int size, int align,
- uint32_t flags, struct bochs_bo **pbochsbo)
-{
- struct bochs_device *bochs = dev->dev_private;
- struct bochs_bo *bochsbo;
- size_t acc_size;
- int ret;
-
- bochsbo = kzalloc(sizeof(struct bochs_bo), GFP_KERNEL);
- if (!bochsbo)
- return -ENOMEM;
-
- ret = drm_gem_object_init(dev, &bochsbo->gem, size);
- if (ret) {
- kfree(bochsbo);
- return ret;
- }
-
- bochsbo->bo.bdev = &bochs->ttm.bdev;
- bochsbo->bo.bdev->dev_mapping = dev->anon_inode->i_mapping;
-
- bochs_ttm_placement(bochsbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
-
- acc_size = ttm_bo_dma_acc_size(&bochs->ttm.bdev, size,
- sizeof(struct bochs_bo));
-
- ret = ttm_bo_init(&bochs->ttm.bdev, &bochsbo->bo, size,
- ttm_bo_type_device, &bochsbo->placement,
- align >> PAGE_SHIFT, false, acc_size,
- NULL, NULL, bochs_bo_ttm_destroy);
- if (ret)
- return ret;
-
- *pbochsbo = bochsbo;
- return 0;
-}
-
-int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
- struct drm_gem_object **obj)
-{
- struct bochs_bo *bochsbo;
- int ret;
-
- *obj = NULL;
-
- size = PAGE_ALIGN(size);
- if (size == 0)
- return -EINVAL;
-
- ret = bochs_bo_create(dev, size, 0, 0, &bochsbo);
- if (ret) {
- if (ret != -ERESTARTSYS)
- DRM_ERROR("failed to allocate GEM object\n");
- return ret;
- }
- *obj = &bochsbo->gem;
- return 0;
-}
-
int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
- struct drm_gem_object *gobj;
- u32 handle;
- int ret;
-
- args->pitch = args->width * ((args->bpp + 7) / 8);
- args->size = args->pitch * args->height;
-
- ret = bochs_gem_create(dev, args->size, false,
- &gobj);
- if (ret)
- return ret;
-
- ret = drm_gem_handle_create(file, gobj, &handle);
- drm_gem_object_put_unlocked(gobj);
- if (ret)
- return ret;
-
- args->handle = handle;
- return 0;
-}
-
-static void bochs_bo_unref(struct bochs_bo **bo)
-{
- struct ttm_buffer_object *tbo;
-
- if ((*bo) == NULL)
- return;
-
- tbo = &((*bo)->bo);
- ttm_bo_put(tbo);
- *bo = NULL;
-}
-
-void bochs_gem_free_object(struct drm_gem_object *obj)
-{
- struct bochs_bo *bochs_bo = gem_to_bochs_bo(obj);
-
- bochs_bo_unref(&bochs_bo);
-}
-
-int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
- uint32_t handle, uint64_t *offset)
-{
- struct drm_gem_object *obj;
- struct bochs_bo *bo;
-
- obj = drm_gem_object_lookup(file, handle);
- if (obj == NULL)
- return -ENOENT;
-
- bo = gem_to_bochs_bo(obj);
- *offset = bochs_bo_mmap_offset(bo);
+ struct bochs_device *bochs = dev->dev_private;
- drm_gem_object_put_unlocked(obj);
- return 0;
+ return drm_gem_vram_fill_create_dumb(file, dev, &bochs->ttm.bdev, 0,
+ false, args);
}
/* ---------------------------------------------------------------------- */
int bochs_gem_prime_pin(struct drm_gem_object *obj)
{
- struct bochs_bo *bo = gem_to_bochs_bo(obj);
+ struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(obj);
- return bochs_bo_pin(bo, TTM_PL_FLAG_VRAM);
+ return drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM);
}
void bochs_gem_prime_unpin(struct drm_gem_object *obj)
{
- struct bochs_bo *bo = gem_to_bochs_bo(obj);
+ struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(obj);
- bochs_bo_unpin(bo);
+ drm_gem_vram_unpin(gbo);
}
void *bochs_gem_prime_vmap(struct drm_gem_object *obj)
{
- struct bochs_bo *bo = gem_to_bochs_bo(obj);
- bool is_iomem;
+ struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(obj);
int ret;
+ void* base;
- ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM);
+ ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM);
if (ret)
return NULL;
- ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
- if (ret) {
- bochs_bo_unpin(bo);
+ base = drm_gem_vram_kmap(gbo, true, NULL);
+ if (IS_ERR(base)) {
+ drm_gem_vram_unpin(gbo);
return NULL;
}
- return ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
+ return base;
}
void bochs_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
{
- struct bochs_bo *bo = gem_to_bochs_bo(obj);
+ struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(obj);
- ttm_bo_kunmap(&bo->kmap);
- bochs_bo_unpin(bo);
+ drm_gem_vram_kunmap(gbo);
+ drm_gem_vram_unpin(gbo);
}
int bochs_gem_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma)
{
- struct bochs_bo *bo = gem_to_bochs_bo(obj);
+ struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(obj);
- bo->gem.vma_node.vm_node.start = bo->bo.vma_node.vm_node.start;
+ gbo->gem.vma_node.vm_node.start = gbo->bo.vma_node.vm_node.start;
return drm_gem_prime_mmap(obj, vma);
}
--
2.21.0
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