[PATCH v3 19/19] drm/hisilicon: Convert hibmc-drm driver to VRAM MM
Thomas Zimmermann
tzimmermann at suse.de
Mon Apr 29 14:43:41 UTC 2019
The data structure |struct drm_vram_mm| and its helpers replace hibmc's
TTM-based memory manager. It's the same implementation; except for the
type names.
v3:
* use drm_gem_vram_mm_funcs
* convert driver to drm_device-based instance
v2:
* implement hibmc_mmap() with drm_vram_mm_mmap()
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
drivers/gpu/drm/hisilicon/hibmc/Kconfig | 1 +
.../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 8 +-
.../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 8 +-
drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c | 139 ++----------------
4 files changed, 13 insertions(+), 143 deletions(-)
diff --git a/drivers/gpu/drm/hisilicon/hibmc/Kconfig b/drivers/gpu/drm/hisilicon/hibmc/Kconfig
index 11720303ca40..7c63c2f7d249 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/Kconfig
+++ b/drivers/gpu/drm/hisilicon/hibmc/Kconfig
@@ -4,6 +4,7 @@ config DRM_HISI_HIBMC
select DRM_KMS_HELPER
select DRM_TTM
select DRM_GEM_VRAM_HELPER
+ select DRM_VRAM_MM_HELPER
help
Choose this option if you have a Hisilicon Hibmc soc chipset.
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 7027a1a05768..7243603de261 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -27,14 +27,8 @@
static const struct file_operations hibmc_fops = {
.owner = THIS_MODULE,
- .open = drm_open,
- .release = drm_release,
- .unlocked_ioctl = drm_ioctl,
- .compat_ioctl = drm_compat_ioctl,
- .mmap = hibmc_mmap,
- .poll = drm_poll,
- .read = drm_read,
.llseek = no_llseek,
+ DRM_VRAM_MM_FILE_OPERATIONS
};
static irqreturn_t hibmc_drm_interrupt(int irq, void *arg)
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
index 6b3430fc5148..3967693ecbdc 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
@@ -24,7 +24,7 @@
#include <drm/drm_fb_helper.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_vram_helper.h>
-#include <drm/ttm/ttm_bo_driver.h>
+#include <drm/drm_vram_mm_helper.h>
struct hibmc_framebuffer {
struct drm_framebuffer fb;
@@ -49,13 +49,8 @@ struct hibmc_drm_private {
struct drm_device *dev;
bool mode_config_initialized;
- /* ttm */
- struct ttm_bo_device bdev;
- bool initialized;
-
/* fbdev */
struct hibmc_fbdev *fbdev;
- bool mm_inited;
};
#define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb)
@@ -81,7 +76,6 @@ int hibmc_mm_init(struct hibmc_drm_private *hibmc);
void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
struct drm_mode_create_dumb *args);
-int hibmc_mmap(struct file *filp, struct vm_area_struct *vma);
extern const struct drm_mode_config_funcs hibmc_mode_funcs;
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
index fbf8eb048ebc..52fba8cb8ddd 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
@@ -17,157 +17,38 @@
*/
#include <drm/drm_atomic_helper.h>
-#include <drm/ttm/ttm_page_alloc.h>
#include "hibmc_drm_drv.h"
-static inline struct hibmc_drm_private *
-hibmc_bdev(struct ttm_bo_device *bd)
-{
- return container_of(bd, struct hibmc_drm_private, bdev);
-}
-
-static int
-hibmc_bo_init_mem_type(struct ttm_bo_device *bdev, u32 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", type);
- return -EINVAL;
- }
- return 0;
-}
-
-static int hibmc_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 hibmc_drm_private *hibmc = hibmc_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 = pci_resource_start(hibmc->dev->pdev, 0);
- mem->bus.is_iomem = true;
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-static void hibmc_ttm_backend_destroy(struct ttm_tt *tt)
-{
- ttm_tt_fini(tt);
- kfree(tt);
-}
-
-static struct ttm_backend_func hibmc_tt_backend_func = {
- .destroy = &hibmc_ttm_backend_destroy,
-};
-
-static struct ttm_tt *hibmc_ttm_tt_create(struct ttm_buffer_object *bo,
- u32 page_flags)
-{
- struct ttm_tt *tt;
- int ret;
-
- tt = kzalloc(sizeof(*tt), GFP_KERNEL);
- if (!tt) {
- DRM_ERROR("failed to allocate ttm_tt\n");
- return NULL;
- }
- tt->func = &hibmc_tt_backend_func;
- ret = ttm_tt_init(tt, bo, page_flags);
- if (ret) {
- DRM_ERROR("failed to initialize ttm_tt: %d\n", ret);
- kfree(tt);
- return NULL;
- }
- return tt;
-}
-
-struct ttm_bo_driver hibmc_bo_driver = {
- .ttm_tt_create = hibmc_ttm_tt_create,
- .init_mem_type = hibmc_bo_init_mem_type,
- .evict_flags = drm_gem_vram_bo_driver_evict_flags,
- .move = NULL,
- .verify_access = drm_gem_vram_bo_driver_verify_access,
- .io_mem_reserve = &hibmc_ttm_io_mem_reserve,
- .io_mem_free = NULL,
-};
-
int hibmc_mm_init(struct hibmc_drm_private *hibmc)
{
+ struct drm_vram_mm *vmm;
int ret;
struct drm_device *dev = hibmc->dev;
- struct ttm_bo_device *bdev = &hibmc->bdev;
-
- ret = ttm_bo_device_init(&hibmc->bdev,
- &hibmc_bo_driver,
- dev->anon_inode->i_mapping,
- true);
- if (ret) {
- DRM_ERROR("error initializing bo driver: %d\n", ret);
- return ret;
- }
- ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
- hibmc->fb_size >> PAGE_SHIFT);
- if (ret) {
- DRM_ERROR("failed ttm VRAM init: %d\n", ret);
+ vmm = drm_vram_helper_alloc_mm(dev,
+ pci_resource_start(dev->pdev, 0),
+ hibmc->fb_size, &drm_gem_vram_mm_funcs);
+ if (IS_ERR(vmm)) {
+ ret = PTR_ERR(vmm);
+ DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
return ret;
}
- hibmc->mm_inited = true;
return 0;
}
void hibmc_mm_fini(struct hibmc_drm_private *hibmc)
{
- if (!hibmc->mm_inited)
+ if (!hibmc->dev->vram_mm)
return;
- ttm_bo_device_release(&hibmc->bdev);
- hibmc->mm_inited = false;
-}
-
-int hibmc_mmap(struct file *filp, struct vm_area_struct *vma)
-{
- struct drm_file *file_priv = filp->private_data;
- struct hibmc_drm_private *hibmc = file_priv->minor->dev->dev_private;
-
- return ttm_bo_mmap(filp, vma, &hibmc->bdev);
+ drm_vram_helper_release_mm(hibmc->dev);
}
int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
struct drm_gem_object **obj)
{
- struct hibmc_drm_private *hibmc = dev->dev_private;
struct drm_gem_vram_object *gbo;
int ret;
@@ -177,7 +58,7 @@ int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
if (size == 0)
return -EINVAL;
- gbo = drm_gem_vram_create(dev, &hibmc->bdev, size, 0, false);
+ gbo = drm_gem_vram_create(dev, &dev->vram_mm->bdev, size, 0, false);
if (IS_ERR(gbo)) {
ret = PTR_ERR(gbo);
if (ret != -ERESTARTSYS)
--
2.21.0
More information about the dri-devel
mailing list