The data structure |struct drm_vram_mm| and its helpers replace bochs'
TTM-based memory manager. It's the same implementation; except for the
type names.
v4:
* don't select DRM_TTM or DRM_VRAM_MM_HELPER
v3:
* use drm_gem_vram_mm_funcs
* convert driver to drm_device-based instance
v2:
* implement bochs_mmap() with drm_vram_mm_mmap()
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
drivers/gpu/drm/bochs/Kconfig | 1 -
drivers/gpu/drm/bochs/bochs.h | 13 +--
drivers/gpu/drm/bochs/bochs_drv.c | 14 +--
drivers/gpu/drm/bochs/bochs_mm.c | 148 ++----------------------------
4 files changed, 12 insertions(+), 164 deletions(-)
diff --git a/drivers/gpu/drm/bochs/Kconfig b/drivers/gpu/drm/bochs/Kconfig
index 4cbcff9e2eb8..e1f6ae9dd042 100644
--- a/drivers/gpu/drm/bochs/Kconfig
+++ b/drivers/gpu/drm/bochs/Kconfig
@@ -2,7 +2,6 @@ config DRM_BOCHS
tristate "DRM Support for bochs dispi vga interface (qemu stdvga)"
depends on DRM && PCI && MMU
select DRM_KMS_HELPER
- select DRM_TTM
select DRM_VRAM_HELPER
help
Choose this option for qemu.
diff --git a/drivers/gpu/drm/bochs/bochs.h b/drivers/gpu/drm/bochs/bochs.h
index 4ccf82e1ca68..323dcca256a3 100644
--- a/drivers/gpu/drm/bochs/bochs.h
+++ b/drivers/gpu/drm/bochs/bochs.h
@@ -12,8 +12,7 @@
#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>
+#include <drm/drm_vram_mm_helper.h>
/* ---------------------------------------------------------------------- */
@@ -74,12 +73,6 @@ struct bochs_device {
struct drm_device *dev;
struct drm_simple_display_pipe pipe;
struct drm_connector connector;
-
- /* ttm */
- struct {
- struct ttm_bo_device bdev;
- bool initialized;
- } ttm;
};
/* ---------------------------------------------------------------------- */
@@ -99,10 +92,6 @@ int bochs_hw_load_edid(struct bochs_device *bochs);
/* bochs_mm.c */
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_dumb_create(struct drm_file *file, struct drm_device *dev,
- struct drm_mode_create_dumb *args);
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 04fed41d6c00..f3bb5fba30bf 100644
--- a/drivers/gpu/drm/bochs/bochs_drv.c
+++ b/drivers/gpu/drm/bochs/bochs_drv.c
@@ -63,14 +63,8 @@ static int bochs_load(struct drm_device *dev)
static const struct file_operations bochs_fops = {
.owner = THIS_MODULE,
- .open = drm_open,
- .release = drm_release,
- .unlocked_ioctl = drm_ioctl,
- .compat_ioctl = drm_compat_ioctl,
- .poll = drm_poll,
- .read = drm_read,
.llseek = no_llseek,
- .mmap = bochs_mmap,
+ DRM_VRAM_MM_FILE_OPERATIONS
};
static struct drm_driver bochs_driver = {
@@ -82,10 +76,8 @@ static struct drm_driver bochs_driver = {
.date = "20130925",
.major = 1,
.minor = 0,
- .gem_free_object_unlocked =
- drm_gem_vram_driver_gem_free_object_unlocked,
- .dumb_create = bochs_dumb_create,
- .dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset,
+
+ DRM_GEM_VRAM_DRIVER,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_import = drm_gem_prime_import,
diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c
index 86062804e54f..e5de0e1a4ace 100644
--- a/drivers/gpu/drm/bochs/bochs_mm.c
+++ b/drivers/gpu/drm/bochs/bochs_mm.c
@@ -9,157 +9,25 @@
/* ---------------------------------------------------------------------- */
-static inline struct bochs_device *bochs_bdev(struct ttm_bo_device *bd)
-{
- return container_of(bd, struct bochs_device, ttm.bdev);
-}
-
-static int bochs_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
- struct ttm_mem_type_manager *man)
-{
- switch (type) {
- case TTM_PL_SYSTEM:
- man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
- man->available_caching = TTM_PL_MASK_CACHING;
- man->default_caching = TTM_PL_FLAG_CACHED;
- break;
- case TTM_PL_VRAM:
- man->func = &ttm_bo_manager_func;
- man->flags = TTM_MEMTYPE_FLAG_FIXED |
- TTM_MEMTYPE_FLAG_MAPPABLE;
- man->available_caching = TTM_PL_FLAG_UNCACHED |
- TTM_PL_FLAG_WC;
- man->default_caching = TTM_PL_FLAG_WC;
- break;
- default:
- DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
- return -EINVAL;
- }
- return 0;
-}
-
-static int bochs_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem)
-{
- struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
- struct bochs_device *bochs = bochs_bdev(bdev);
-
- mem->bus.addr = NULL;
- mem->bus.offset = 0;
- mem->bus.size = mem->num_pages << PAGE_SHIFT;
- mem->bus.base = 0;
- mem->bus.is_iomem = false;
- if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
- return -EINVAL;
- switch (mem->mem_type) {
- case TTM_PL_SYSTEM:
- /* system memory */
- return 0;
- case TTM_PL_VRAM:
- mem->bus.offset = mem->start << PAGE_SHIFT;
- mem->bus.base = bochs->fb_base;
- mem->bus.is_iomem = true;
- break;
- default:
- return -EINVAL;
- break;
- }
- return 0;
-}
-
-static void bochs_ttm_io_mem_free(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem)
-{
-}
-
-static void bochs_ttm_backend_destroy(struct ttm_tt *tt)
-{
- ttm_tt_fini(tt);
- kfree(tt);
-}
-
-static struct ttm_backend_func bochs_tt_backend_func = {
- .destroy = &bochs_ttm_backend_destroy,
-};
-
-static struct ttm_tt *bochs_ttm_tt_create(struct ttm_buffer_object *bo,
- uint32_t page_flags)
-{
- struct ttm_tt *tt;
-
- tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
- if (tt == NULL)
- return NULL;
- tt->func = &bochs_tt_backend_func;
- if (ttm_tt_init(tt, bo, page_flags)) {
- kfree(tt);
- return NULL;
- }
- return tt;
-}
-
-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 = drm_gem_vram_bo_driver_evict_flags,
- .move = NULL,
- .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,
-};
-
int bochs_mm_init(struct bochs_device *bochs)
{
- struct ttm_bo_device *bdev = &bochs->ttm.bdev;
- int ret;
+ struct drm_vram_mm *vmm;
- ret = ttm_bo_device_init(&bochs->ttm.bdev,
- &bochs_bo_driver,
- bochs->dev->anon_inode->i_mapping,
- true);
- if (ret) {
- DRM_ERROR("Error initialising bo driver; %d\n", ret);
- return ret;
- }
-
- ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
- bochs->fb_size >> PAGE_SHIFT);
- if (ret) {
- DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
- return ret;
- }
+ vmm = drm_vram_helper_alloc_mm(bochs->dev, bochs->fb_base,
+ bochs->fb_size,
+ &drm_gem_vram_mm_funcs);
+ if (IS_ERR(vmm))
+ return PTR_ERR(vmm);
- bochs->ttm.initialized = true;
return 0;
}
void bochs_mm_fini(struct bochs_device *bochs)
{
- if (!bochs->ttm.initialized)
+ if (!bochs->dev->vram_mm)
return;
- ttm_bo_device_release(&bochs->ttm.bdev);
- bochs->ttm.initialized = false;
-}
-
-int bochs_mmap(struct file *filp, struct vm_area_struct *vma)
-{
- struct drm_file *file_priv = filp->private_data;
- struct bochs_device *bochs = file_priv->minor->dev->dev_private;
-
- return ttm_bo_mmap(filp, vma, &bochs->ttm.bdev);
-}
-
-/* ---------------------------------------------------------------------- */
-
-int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
- struct drm_mode_create_dumb *args)
-{
- struct bochs_device *bochs = dev->dev_private;
-
- return drm_gem_vram_fill_create_dumb(file, dev, &bochs->ttm.bdev, 0,
- false, args);
+ drm_vram_helper_release_mm(bochs->dev);
}
/* ---------------------------------------------------------------------- */
--
2.21.0
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