[PATCH v2 15/17] drm/vboxvideo: Convert vboxvideo driver to VRAM MM
Thomas Zimmermann
tzimmermann at suse.de
Wed Apr 24 11:48:40 UTC 2019
The data structure |struct drm_vram_mm| and its helpers replace vboxvideo's
TTM-based memory manager. It's the same implementation; except for the type
names.
v2:
* implement vbox_mmap() with drm_vram_mm_mmap()
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Reviewed-by: Hans de Goede <hdegoede at redhat.com>
---
drivers/gpu/drm/vboxvideo/Kconfig | 1 +
drivers/gpu/drm/vboxvideo/vbox_drv.h | 10 +-
drivers/gpu/drm/vboxvideo/vbox_main.c | 4 +-
drivers/gpu/drm/vboxvideo/vbox_ttm.c | 126 ++------------------------
4 files changed, 14 insertions(+), 127 deletions(-)
diff --git a/drivers/gpu/drm/vboxvideo/Kconfig b/drivers/gpu/drm/vboxvideo/Kconfig
index 96c794a39c56..485b665a9fa4 100644
--- a/drivers/gpu/drm/vboxvideo/Kconfig
+++ b/drivers/gpu/drm/vboxvideo/Kconfig
@@ -4,6 +4,7 @@ config DRM_VBOXVIDEO
select DRM_KMS_HELPER
select DRM_TTM
select DRM_GEM_VRAM_HELPER
+ select DRM_VRAM_MM_HELPER
select GENERIC_ALLOCATOR
help
This is a KMS driver for the virtual Graphics Card used in
diff --git a/drivers/gpu/drm/vboxvideo/vbox_drv.h b/drivers/gpu/drm/vboxvideo/vbox_drv.h
index f91564440a8f..e5a160e6bcc7 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_drv.h
+++ b/drivers/gpu/drm/vboxvideo/vbox_drv.h
@@ -20,11 +20,7 @@
#include <drm/drm_gem.h>
#include <drm/drm_gem_vram_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_vram_mm_helper.h>
#include "vboxvideo_guest.h"
#include "vboxvideo_vbe.h"
@@ -78,9 +74,7 @@ struct vbox_private {
int fb_mtrr;
- struct {
- struct ttm_bo_device bdev;
- } ttm;
+ struct drm_vram_mm vmm;
struct mutex hw_mutex; /* protects modeset and accel/vbva accesses */
struct work_struct hotplug_work;
diff --git a/drivers/gpu/drm/vboxvideo/vbox_main.c b/drivers/gpu/drm/vboxvideo/vbox_main.c
index 525e9fd63f4d..8726b33abe7f 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_main.c
+++ b/drivers/gpu/drm/vboxvideo/vbox_main.c
@@ -283,7 +283,7 @@ int vbox_gem_create(struct vbox_private *vbox,
if (size == 0)
return -EINVAL;
- gbo = drm_gem_vram_create(&vbox->ddev, &vbox->ttm.bdev, size, 0, false);
+ gbo = drm_gem_vram_create(&vbox->ddev, &vbox->vmm.bdev, size, 0, false);
if (IS_ERR(gbo)) {
ret = PTR_ERR(gbo);
if (ret != -ERESTARTSYS)
@@ -301,7 +301,7 @@ int vbox_dumb_create(struct drm_file *file,
{
struct vbox_private *vbox = dev->dev_private;
- return drm_gem_vram_fill_create_dumb(file, dev, &vbox->ttm.bdev, 0,
+ return drm_gem_vram_fill_create_dumb(file, dev, &vbox->vmm.bdev, 0,
false, args);
}
diff --git a/drivers/gpu/drm/vboxvideo/vbox_ttm.c b/drivers/gpu/drm/vboxvideo/vbox_ttm.c
index 0989d656eed6..b71a3c404db1 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_ttm.c
+++ b/drivers/gpu/drm/vboxvideo/vbox_ttm.c
@@ -8,131 +8,27 @@
*/
#include <linux/pci.h>
#include <drm/drm_file.h>
-#include <drm/ttm/ttm_page_alloc.h>
#include "vbox_drv.h"
-static inline struct vbox_private *vbox_bdev(struct ttm_bo_device *bd)
-{
- return container_of(bd, struct vbox_private, ttm.bdev);
-}
-
-static int
-vbox_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", (unsigned int)type);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int vbox_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 vbox_private *vbox = vbox_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(vbox->ddev.pdev, 0);
- mem->bus.is_iomem = true;
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem)
-{
-}
-
-static void vbox_ttm_backend_destroy(struct ttm_tt *tt)
-{
- ttm_tt_fini(tt);
- kfree(tt);
-}
-
-static struct ttm_backend_func vbox_tt_backend_func = {
- .destroy = &vbox_ttm_backend_destroy,
-};
-
-static struct ttm_tt *vbox_ttm_tt_create(struct ttm_buffer_object *bo,
- u32 page_flags)
-{
- struct ttm_tt *tt;
-
- tt = kzalloc(sizeof(*tt), GFP_KERNEL);
- if (!tt)
- return NULL;
-
- tt->func = &vbox_tt_backend_func;
- if (ttm_tt_init(tt, bo, page_flags)) {
- kfree(tt);
- return NULL;
- }
-
- return tt;
-}
-
-static struct ttm_bo_driver vbox_bo_driver = {
- .ttm_tt_create = vbox_ttm_tt_create,
- .init_mem_type = vbox_bo_init_mem_type,
- .eviction_valuable = ttm_bo_eviction_valuable,
+static const struct drm_vram_mm_funcs vbox_vram_mm_funcs = {
.evict_flags = drm_gem_vram_bo_driver_evict_flags,
- .verify_access = drm_gem_vram_bo_driver_verify_access,
- .io_mem_reserve = &vbox_ttm_io_mem_reserve,
- .io_mem_free = &vbox_ttm_io_mem_free,
+ .verify_access = drm_gem_vram_bo_driver_verify_access
};
int vbox_mm_init(struct vbox_private *vbox)
{
int ret;
struct drm_device *dev = &vbox->ddev;
- struct ttm_bo_device *bdev = &vbox->ttm.bdev;
- ret = ttm_bo_device_init(&vbox->ttm.bdev,
- &vbox_bo_driver,
- dev->anon_inode->i_mapping,
- true);
+ ret = drm_vram_mm_init(&vbox->vmm, dev,
+ pci_resource_start(dev->pdev, 0),
+ vbox->available_vram_size,
+ &vbox_vram_mm_funcs);
if (ret) {
- DRM_ERROR("Error initialising bo driver; %d\n", ret);
+ DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
return ret;
}
- ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
- vbox->available_vram_size >> PAGE_SHIFT);
- if (ret) {
- DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
- goto err_device_release;
- }
-
#ifdef DRM_MTRR_WC
vbox->fb_mtrr = drm_mtrr_add(pci_resource_start(dev->pdev, 0),
pci_resource_len(dev->pdev, 0),
@@ -142,10 +38,6 @@ int vbox_mm_init(struct vbox_private *vbox)
pci_resource_len(dev->pdev, 0));
#endif
return 0;
-
-err_device_release:
- ttm_bo_device_release(&vbox->ttm.bdev);
- return ret;
}
void vbox_mm_fini(struct vbox_private *vbox)
@@ -157,7 +49,7 @@ void vbox_mm_fini(struct vbox_private *vbox)
#else
arch_phys_wc_del(vbox->fb_mtrr);
#endif
- ttm_bo_device_release(&vbox->ttm.bdev);
+ drm_vram_mm_cleanup(&vbox->vmm);
}
int vbox_mmap(struct file *filp, struct vm_area_struct *vma)
@@ -165,5 +57,5 @@ int vbox_mmap(struct file *filp, struct vm_area_struct *vma)
struct drm_file *file_priv = filp->private_data;
struct vbox_private *vbox = file_priv->minor->dev->dev_private;
- return ttm_bo_mmap(filp, vma, &vbox->ttm.bdev);
+ return drm_vram_mm_mmap(filp, vma, &vbox->vmm);
}
--
2.21.0
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