[PATCH v2 12/17] drm/mgag200: Convert mgag200 driver to VRAM MM
Thomas Zimmermann
tzimmermann at suse.de
Wed Apr 24 11:48:37 UTC 2019
The data structure |struct drm_vram_mm| and its helpers replace mgag200's
TTM-based memory manager. It's the same implementation; except for the type
names.
v2:
* implement mgag200_mmap() with drm_vram_mm_mmap()
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
drivers/gpu/drm/mgag200/Kconfig | 1 +
drivers/gpu/drm/mgag200/mgag200_drv.h | 11 +--
drivers/gpu/drm/mgag200/mgag200_main.c | 8 +-
drivers/gpu/drm/mgag200/mgag200_ttm.c | 123 ++-----------------------
4 files changed, 17 insertions(+), 126 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/Kconfig b/drivers/gpu/drm/mgag200/Kconfig
index 52b7c3ee3064..8368fc5f4ca9 100644
--- a/drivers/gpu/drm/mgag200/Kconfig
+++ b/drivers/gpu/drm/mgag200/Kconfig
@@ -4,6 +4,7 @@ config DRM_MGAG200
select DRM_KMS_HELPER
select DRM_TTM
select DRM_GEM_VRAM_HELPER
+ select DRM_VRAM_MM_HELPER
help
This is a KMS driver for the MGA G200 server chips, it
does not support the original MGA G200 or any of the desktop
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h
index 86b33e23ab7f..0d498b1312e1 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -17,15 +17,12 @@
#include <drm/drm_encoder.h>
#include <drm/drm_fb_helper.h>
-#include <drm/ttm/ttm_bo_api.h>
-#include <drm/ttm/ttm_bo_driver.h>
-#include <drm/ttm/ttm_placement.h>
-#include <drm/ttm/ttm_memory.h>
-#include <drm/ttm/ttm_module.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_vram_helper.h>
+#include <drm/drm_vram_mm_helper.h>
+
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
@@ -212,9 +209,7 @@ struct mga_device {
int fb_mtrr;
- struct {
- struct ttm_bo_device bdev;
- } ttm;
+ struct drm_vram_mm vmm;
/* SE model number stored in reg 0x1e24 */
u32 unique_rev_id;
diff --git a/drivers/gpu/drm/mgag200/mgag200_main.c b/drivers/gpu/drm/mgag200/mgag200_main.c
index 59a4028a5c6c..571860d2df0f 100644
--- a/drivers/gpu/drm/mgag200/mgag200_main.c
+++ b/drivers/gpu/drm/mgag200/mgag200_main.c
@@ -230,10 +230,10 @@ int mgag200_driver_load(struct drm_device *dev, unsigned long flags)
}
/* Make small buffers to store a hardware cursor (double buffered icon updates) */
- mdev->cursor.pixels_1 = drm_gem_vram_create(dev, &mdev->ttm.bdev,
+ mdev->cursor.pixels_1 = drm_gem_vram_create(dev, &mdev->vmm.bdev,
roundup(48*64, PAGE_SIZE),
0, 0);
- mdev->cursor.pixels_2 = drm_gem_vram_create(dev, &mdev->ttm.bdev,
+ mdev->cursor.pixels_2 = drm_gem_vram_create(dev, &mdev->vmm.bdev,
roundup(48*64, PAGE_SIZE),
0, 0);
if (IS_ERR(mdev->cursor.pixels_2) || IS_ERR(mdev->cursor.pixels_1)) {
@@ -284,7 +284,7 @@ int mgag200_gem_create(struct drm_device *dev,
if (size == 0)
return -EINVAL;
- gbo = drm_gem_vram_create(dev, &mdev->ttm.bdev, size, 0, false);
+ gbo = drm_gem_vram_create(dev, &mdev->vmm.bdev, size, 0, false);
if (IS_ERR(gbo)) {
ret = PTR_ERR(gbo);
if (ret != -ERESTARTSYS)
@@ -301,6 +301,6 @@ int mgag200_dumb_create(struct drm_file *file,
{
struct mga_device *mdev = dev->dev_private;
- return drm_gem_vram_fill_create_dumb(file, dev, &mdev->ttm.bdev, 0,
+ return drm_gem_vram_fill_create_dumb(file, dev, &mdev->vmm.bdev, 0,
false, args);
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_ttm.c b/drivers/gpu/drm/mgag200/mgag200_ttm.c
index 2c0249086bf9..52c649382fa9 100644
--- a/drivers/gpu/drm/mgag200/mgag200_ttm.c
+++ b/drivers/gpu/drm/mgag200/mgag200_ttm.c
@@ -26,130 +26,25 @@
* Authors: Dave Airlie <airlied at redhat.com>
*/
#include <drm/drmP.h>
-#include <drm/ttm/ttm_page_alloc.h>
#include "mgag200_drv.h"
-static inline struct mga_device *
-mgag200_bdev(struct ttm_bo_device *bd)
-{
- return container_of(bd, struct mga_device, ttm.bdev);
-}
-
-static int
-mgag200_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 mgag200_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 mga_device *mdev = mgag200_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(mdev->dev->pdev, 0);
- mem->bus.is_iomem = true;
- break;
- default:
- return -EINVAL;
- break;
- }
- return 0;
-}
-
-static void mgag200_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
-{
-}
-
-static void mgag200_ttm_backend_destroy(struct ttm_tt *tt)
-{
- ttm_tt_fini(tt);
- kfree(tt);
-}
-
-static struct ttm_backend_func mgag200_tt_backend_func = {
- .destroy = &mgag200_ttm_backend_destroy,
-};
-
-
-static struct ttm_tt *mgag200_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 = &mgag200_tt_backend_func;
- if (ttm_tt_init(tt, bo, page_flags)) {
- kfree(tt);
- return NULL;
- }
- return tt;
-}
-
-struct ttm_bo_driver mgag200_bo_driver = {
- .ttm_tt_create = mgag200_ttm_tt_create,
- .init_mem_type = mgag200_bo_init_mem_type,
- .eviction_valuable = ttm_bo_eviction_valuable,
+static const struct drm_vram_mm_funcs mgag200_vram_mm_funcs = {
.evict_flags = drm_gem_vram_bo_driver_evict_flags,
- .move = NULL,
- .verify_access = drm_gem_vram_bo_driver_verify_access,
- .io_mem_reserve = &mgag200_ttm_io_mem_reserve,
- .io_mem_free = &mgag200_ttm_io_mem_free,
+ .verify_access = drm_gem_vram_bo_driver_verify_access
};
int mgag200_mm_init(struct mga_device *mdev)
{
int ret;
struct drm_device *dev = mdev->dev;
- struct ttm_bo_device *bdev = &mdev->ttm.bdev;
-
- ret = ttm_bo_device_init(&mdev->ttm.bdev,
- &mgag200_bo_driver,
- 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, mdev->mc.vram_size >> PAGE_SHIFT);
+ ret = drm_vram_mm_init(&mdev->vmm, dev,
+ pci_resource_start(dev->pdev, 0),
+ mdev->mc.vram_size,
+ &mgag200_vram_mm_funcs);
if (ret) {
- DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
+ DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
return ret;
}
@@ -166,7 +61,7 @@ void mgag200_mm_fini(struct mga_device *mdev)
{
struct drm_device *dev = mdev->dev;
- ttm_bo_device_release(&mdev->ttm.bdev);
+ drm_vram_mm_cleanup(&mdev->vmm);
arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
pci_resource_len(dev->pdev, 0));
@@ -179,5 +74,5 @@ int mgag200_mmap(struct file *filp, struct vm_area_struct *vma)
struct drm_file *file_priv = filp->private_data;
struct mga_device *mdev = file_priv->minor->dev->dev_private;
- return ttm_bo_mmap(filp, vma, &mdev->ttm.bdev);
+ return drm_vram_mm_mmap(filp, vma, &mdev->vmm);
}
--
2.21.0
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