[PATCH v5 06/10] drm/gem: Use struct dma_buf_map in GEM vmap ops and convert GEM backends
Thomas Zimmermann
tzimmermann at suse.de
Tue Oct 20 12:20:42 UTC 2020
This patch replaces the vmap/vunmap's use of raw pointers in GEM object
functions with instances of struct dma_buf_map. GEM backends are
converted as well. For most of them, this simply changes the returned type.
TTM-based drivers now return information about the location of the memory,
either system or I/O memory. GEM VRAM helpers and qxl now use ttm_bo_vmap()
et al. Amdgpu, nouveau and radeon use drm_gem_ttm_vmap() et al instead of
implementing their own vmap callbacks.
v5:
* update vkms after switch to shmem
v4:
* use ttm_bo_vmap(), drm_gem_ttm_vmap(), et al. (Daniel, Christian)
* fix a trailing { in drm_gem_vmap()
* remove several empty functions instead of converting them (Daniel)
* comment uses of raw pointers with a TODO (Daniel)
* TODO list: convert more helpers to use struct dma_buf_map
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Acked-by: Christian König <christian.koenig at amd.com>
Tested-by: Sam Ravnborg <sam at ravnborg.org>
---
Documentation/gpu/todo.rst | 18 ++++
drivers/gpu/drm/Kconfig | 2 +
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 36 -------
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h | 2 -
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 5 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 1 -
drivers/gpu/drm/ast/ast_cursor.c | 27 +++--
drivers/gpu/drm/ast/ast_drv.h | 7 +-
drivers/gpu/drm/drm_gem.c | 23 +++--
drivers/gpu/drm/drm_gem_cma_helper.c | 10 +-
drivers/gpu/drm/drm_gem_shmem_helper.c | 48 +++++----
drivers/gpu/drm/drm_gem_vram_helper.c | 107 ++++++++++----------
drivers/gpu/drm/etnaviv/etnaviv_drv.h | 2 +-
drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 9 +-
drivers/gpu/drm/lima/lima_gem.c | 6 +-
drivers/gpu/drm/lima/lima_sched.c | 11 +-
drivers/gpu/drm/mgag200/mgag200_mode.c | 10 +-
drivers/gpu/drm/nouveau/Kconfig | 1 +
drivers/gpu/drm/nouveau/nouveau_bo.h | 2 -
drivers/gpu/drm/nouveau/nouveau_gem.c | 6 +-
drivers/gpu/drm/nouveau/nouveau_gem.h | 2 -
drivers/gpu/drm/nouveau/nouveau_prime.c | 20 ----
drivers/gpu/drm/panfrost/panfrost_perfcnt.c | 14 +--
drivers/gpu/drm/qxl/qxl_display.c | 11 +-
drivers/gpu/drm/qxl/qxl_draw.c | 14 ++-
drivers/gpu/drm/qxl/qxl_drv.h | 11 +-
drivers/gpu/drm/qxl/qxl_object.c | 31 +++---
drivers/gpu/drm/qxl/qxl_object.h | 2 +-
drivers/gpu/drm/qxl/qxl_prime.c | 12 +--
drivers/gpu/drm/radeon/radeon.h | 1 -
drivers/gpu/drm/radeon/radeon_gem.c | 7 +-
drivers/gpu/drm/radeon/radeon_prime.c | 20 ----
drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 22 ++--
drivers/gpu/drm/rockchip/rockchip_drm_gem.h | 4 +-
drivers/gpu/drm/tiny/cirrus.c | 10 +-
drivers/gpu/drm/tiny/gm12u320.c | 10 +-
drivers/gpu/drm/udl/udl_modeset.c | 8 +-
drivers/gpu/drm/vboxvideo/vbox_mode.c | 11 +-
drivers/gpu/drm/vc4/vc4_bo.c | 6 +-
drivers/gpu/drm/vc4/vc4_drv.h | 2 +-
drivers/gpu/drm/vgem/vgem_drv.c | 16 ++-
drivers/gpu/drm/vkms/vkms_plane.c | 15 ++-
drivers/gpu/drm/vkms/vkms_writeback.c | 22 ++--
drivers/gpu/drm/xen/xen_drm_front_gem.c | 18 ++--
drivers/gpu/drm/xen/xen_drm_front_gem.h | 6 +-
include/drm/drm_gem.h | 5 +-
include/drm/drm_gem_cma_helper.h | 2 +-
include/drm/drm_gem_shmem_helper.h | 4 +-
include/drm/drm_gem_vram_helper.h | 14 +--
49 files changed, 345 insertions(+), 308 deletions(-)
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index 700637e25ecd..7e6fc3c04add 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -446,6 +446,24 @@ Contact: Ville Syrjälä, Daniel Vetter
Level: Intermediate
+Use struct dma_buf_map throughout codebase
+------------------------------------------
+
+Pointers to shared device memory are stored in struct dma_buf_map. Each
+instance knows whether it refers to system or I/O memory. Most of the DRM-wide
+interface have been converted to use struct dma_buf_map, but implementations
+often still use raw pointers.
+
+The task is to use struct dma_buf_map where it makes sense.
+
+* Memory managers should use struct dma_buf_map for dma-buf-imported buffers.
+* TTM might benefit from using struct dma_buf_map internally.
+* Framebuffer copying and blitting helpers should operate on struct dma_buf_map.
+
+Contact: Thomas Zimmermann <tzimmermann at suse.de>, Christian König, Daniel Vetter
+
+Level: Intermediate
+
Core refactorings
=================
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 32257189e09b..e479b04e955e 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -239,6 +239,7 @@ config DRM_RADEON
select FW_LOADER
select DRM_KMS_HELPER
select DRM_TTM
+ select DRM_TTM_HELPER
select POWER_SUPPLY
select HWMON
select BACKLIGHT_CLASS_DEVICE
@@ -259,6 +260,7 @@ config DRM_AMDGPU
select DRM_KMS_HELPER
select DRM_SCHED
select DRM_TTM
+ select DRM_TTM_HELPER
select POWER_SUPPLY
select HWMON
select BACKLIGHT_CLASS_DEVICE
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
index 5b465ab774d1..e5919efca870 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
@@ -41,42 +41,6 @@
#include <linux/dma-fence-array.h>
#include <linux/pci-p2pdma.h>
-/**
- * amdgpu_gem_prime_vmap - &dma_buf_ops.vmap implementation
- * @obj: GEM BO
- *
- * Sets up an in-kernel virtual mapping of the BO's memory.
- *
- * Returns:
- * The virtual address of the mapping or an error pointer.
- */
-void *amdgpu_gem_prime_vmap(struct drm_gem_object *obj)
-{
- struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
- int ret;
-
- ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages,
- &bo->dma_buf_vmap);
- if (ret)
- return ERR_PTR(ret);
-
- return bo->dma_buf_vmap.virtual;
-}
-
-/**
- * amdgpu_gem_prime_vunmap - &dma_buf_ops.vunmap implementation
- * @obj: GEM BO
- * @vaddr: Virtual address (unused)
- *
- * Tears down the in-kernel virtual mapping of the BO's memory.
- */
-void amdgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
-{
- struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
-
- ttm_bo_kunmap(&bo->dma_buf_vmap);
-}
-
/**
* amdgpu_gem_prime_mmap - &drm_driver.gem_prime_mmap implementation
* @obj: GEM BO
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h
index 2c5c84a06bb9..39b5b9616fd8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h
@@ -31,8 +31,6 @@ struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev,
struct dma_buf *dma_buf);
bool amdgpu_dmabuf_is_xgmi_accessible(struct amdgpu_device *adev,
struct amdgpu_bo *bo);
-void *amdgpu_gem_prime_vmap(struct drm_gem_object *obj);
-void amdgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
int amdgpu_gem_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index be08a63ef58c..576659827e74 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -33,6 +33,7 @@
#include <drm/amdgpu_drm.h>
#include <drm/drm_debugfs.h>
+#include <drm/drm_gem_ttm_helper.h>
#include "amdgpu.h"
#include "amdgpu_display.h"
@@ -220,8 +221,8 @@ static const struct drm_gem_object_funcs amdgpu_gem_object_funcs = {
.open = amdgpu_gem_object_open,
.close = amdgpu_gem_object_close,
.export = amdgpu_gem_prime_export,
- .vmap = amdgpu_gem_prime_vmap,
- .vunmap = amdgpu_gem_prime_vunmap,
+ .vmap = drm_gem_ttm_vmap,
+ .vunmap = drm_gem_ttm_vunmap,
};
/*
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index 132e5f955180..01296ef0d673 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -100,7 +100,6 @@ struct amdgpu_bo {
struct amdgpu_bo *parent;
struct amdgpu_bo *shadow;
- struct ttm_bo_kmap_obj dma_buf_vmap;
struct amdgpu_mn *mn;
diff --git a/drivers/gpu/drm/ast/ast_cursor.c b/drivers/gpu/drm/ast/ast_cursor.c
index e0f4613918ad..742d43a7edf4 100644
--- a/drivers/gpu/drm/ast/ast_cursor.c
+++ b/drivers/gpu/drm/ast/ast_cursor.c
@@ -39,7 +39,7 @@ static void ast_cursor_fini(struct ast_private *ast)
for (i = 0; i < ARRAY_SIZE(ast->cursor.gbo); ++i) {
gbo = ast->cursor.gbo[i];
- drm_gem_vram_vunmap(gbo, ast->cursor.vaddr[i]);
+ drm_gem_vram_vunmap(gbo, &ast->cursor.map[i]);
drm_gem_vram_unpin(gbo);
drm_gem_vram_put(gbo);
}
@@ -60,7 +60,7 @@ int ast_cursor_init(struct ast_private *ast)
struct drm_device *dev = &ast->base;
size_t size, i;
struct drm_gem_vram_object *gbo;
- void __iomem *vaddr;
+ struct dma_buf_map map;
int ret;
size = roundup(AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE, PAGE_SIZE);
@@ -77,16 +77,15 @@ int ast_cursor_init(struct ast_private *ast)
drm_gem_vram_put(gbo);
goto err_drm_gem_vram_put;
}
- vaddr = drm_gem_vram_vmap(gbo);
- if (IS_ERR(vaddr)) {
- ret = PTR_ERR(vaddr);
+ ret = drm_gem_vram_vmap(gbo, &map);
+ if (ret) {
drm_gem_vram_unpin(gbo);
drm_gem_vram_put(gbo);
goto err_drm_gem_vram_put;
}
ast->cursor.gbo[i] = gbo;
- ast->cursor.vaddr[i] = vaddr;
+ ast->cursor.map[i] = map;
}
return drmm_add_action_or_reset(dev, ast_cursor_release, NULL);
@@ -95,7 +94,7 @@ int ast_cursor_init(struct ast_private *ast)
while (i) {
--i;
gbo = ast->cursor.gbo[i];
- drm_gem_vram_vunmap(gbo, ast->cursor.vaddr[i]);
+ drm_gem_vram_vunmap(gbo, &ast->cursor.map[i]);
drm_gem_vram_unpin(gbo);
drm_gem_vram_put(gbo);
}
@@ -170,6 +169,7 @@ int ast_cursor_blit(struct ast_private *ast, struct drm_framebuffer *fb)
{
struct drm_device *dev = &ast->base;
struct drm_gem_vram_object *gbo;
+ struct dma_buf_map map;
int ret;
void *src;
void __iomem *dst;
@@ -183,18 +183,17 @@ int ast_cursor_blit(struct ast_private *ast, struct drm_framebuffer *fb)
ret = drm_gem_vram_pin(gbo, 0);
if (ret)
return ret;
- src = drm_gem_vram_vmap(gbo);
- if (IS_ERR(src)) {
- ret = PTR_ERR(src);
+ ret = drm_gem_vram_vmap(gbo, &map);
+ if (ret)
goto err_drm_gem_vram_unpin;
- }
+ src = map.vaddr; /* TODO: Use mapping abstraction properly */
- dst = ast->cursor.vaddr[ast->cursor.next_index];
+ dst = ast->cursor.map[ast->cursor.next_index].vaddr_iomem;
/* do data transfer to cursor BO */
update_cursor_image(dst, src, fb->width, fb->height);
- drm_gem_vram_vunmap(gbo, src);
+ drm_gem_vram_vunmap(gbo, &map);
drm_gem_vram_unpin(gbo);
return 0;
@@ -257,7 +256,7 @@ void ast_cursor_show(struct ast_private *ast, int x, int y,
u8 __iomem *sig;
u8 jreg;
- dst = ast->cursor.vaddr[ast->cursor.next_index];
+ dst = ast->cursor.map[ast->cursor.next_index].vaddr;
sig = dst + AST_HWC_SIZE;
writel(x, sig + AST_HWC_SIGNATURE_X);
diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
index 467049ca8430..f963141dd851 100644
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@@ -28,10 +28,11 @@
#ifndef __AST_DRV_H__
#define __AST_DRV_H__
-#include <linux/types.h>
-#include <linux/io.h>
+#include <linux/dma-buf-map.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
+#include <linux/io.h>
+#include <linux/types.h>
#include <drm/drm_connector.h>
#include <drm/drm_crtc.h>
@@ -131,7 +132,7 @@ struct ast_private {
struct {
struct drm_gem_vram_object *gbo[AST_DEFAULT_HWC_NUM];
- void __iomem *vaddr[AST_DEFAULT_HWC_NUM];
+ struct dma_buf_map map[AST_DEFAULT_HWC_NUM];
unsigned int next_index;
} cursor;
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 1da67d34e55d..a89ad4570e3c 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -36,6 +36,7 @@
#include <linux/pagemap.h>
#include <linux/shmem_fs.h>
#include <linux/dma-buf.h>
+#include <linux/dma-buf-map.h>
#include <linux/mem_encrypt.h>
#include <linux/pagevec.h>
@@ -1207,26 +1208,30 @@ void drm_gem_unpin(struct drm_gem_object *obj)
void *drm_gem_vmap(struct drm_gem_object *obj)
{
- void *vaddr;
+ struct dma_buf_map map;
+ int ret;
- if (obj->funcs->vmap)
- vaddr = obj->funcs->vmap(obj);
- else
- vaddr = ERR_PTR(-EOPNOTSUPP);
+ if (!obj->funcs->vmap)
+ return ERR_PTR(-EOPNOTSUPP);
- if (!vaddr)
- vaddr = ERR_PTR(-ENOMEM);
+ ret = obj->funcs->vmap(obj, &map);
+ if (ret)
+ return ERR_PTR(ret);
+ else if (dma_buf_map_is_null(&map))
+ return ERR_PTR(-ENOMEM);
- return vaddr;
+ return map.vaddr;
}
void drm_gem_vunmap(struct drm_gem_object *obj, void *vaddr)
{
+ struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(vaddr);
+
if (!vaddr)
return;
if (obj->funcs->vunmap)
- obj->funcs->vunmap(obj, vaddr);
+ obj->funcs->vunmap(obj, &map);
}
/**
diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c
index d527485ea0b7..b57e3e9222f0 100644
--- a/drivers/gpu/drm/drm_gem_cma_helper.c
+++ b/drivers/gpu/drm/drm_gem_cma_helper.c
@@ -519,6 +519,8 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_mmap);
* drm_gem_cma_prime_vmap - map a CMA GEM object into the kernel's virtual
* address space
* @obj: GEM object
+ * @map: Returns the kernel virtual address of the CMA GEM object's backing
+ * store.
*
* This function maps a buffer exported via DRM PRIME into the kernel's
* virtual address space. Since the CMA buffers are already mapped into the
@@ -527,13 +529,15 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_mmap);
* driver's &drm_gem_object_funcs.vmap callback.
*
* Returns:
- * The kernel virtual address of the CMA GEM object's backing store.
+ * 0 on success, or a negative error code otherwise.
*/
-void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj)
+int drm_gem_cma_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct drm_gem_cma_object *cma_obj = to_drm_gem_cma_obj(obj);
- return cma_obj->vaddr;
+ dma_buf_map_set_vaddr(map, cma_obj->vaddr);
+
+ return 0;
}
EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vmap);
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index fb11df7aced5..5553f58f68f3 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -258,19 +258,25 @@ void drm_gem_shmem_unpin(struct drm_gem_object *obj)
}
EXPORT_SYMBOL(drm_gem_shmem_unpin);
-static void *drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem)
+static int drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem, struct dma_buf_map *map)
{
struct drm_gem_object *obj = &shmem->base;
- struct dma_buf_map map;
int ret = 0;
- if (shmem->vmap_use_count++ > 0)
- return shmem->vaddr;
+ if (shmem->vmap_use_count++ > 0) {
+ dma_buf_map_set_vaddr(map, shmem->vaddr);
+ return 0;
+ }
if (obj->import_attach) {
- ret = dma_buf_vmap(obj->import_attach->dmabuf, &map);
- if (!ret)
- shmem->vaddr = map.vaddr;
+ ret = dma_buf_vmap(obj->import_attach->dmabuf, map);
+ if (!ret) {
+ if (WARN_ON(map->is_iomem)) {
+ ret = -EIO;
+ goto err_put_pages;
+ }
+ shmem->vaddr = map->vaddr;
+ }
} else {
pgprot_t prot = PAGE_KERNEL;
@@ -284,6 +290,8 @@ static void *drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem)
VM_MAP, prot);
if (!shmem->vaddr)
ret = -ENOMEM;
+ else
+ dma_buf_map_set_vaddr(map, shmem->vaddr);
}
if (ret) {
@@ -291,7 +299,7 @@ static void *drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem)
goto err_put_pages;
}
- return shmem->vaddr;
+ return 0;
err_put_pages:
if (!obj->import_attach)
@@ -299,12 +307,14 @@ static void *drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem)
err_zero_use:
shmem->vmap_use_count = 0;
- return ERR_PTR(ret);
+ return ret;
}
/*
* drm_gem_shmem_vmap - Create a virtual mapping for a shmem GEM object
* @shmem: shmem GEM object
+ * @map: Returns the kernel virtual address of the SHMEM GEM object's backing
+ * store.
*
* This function makes sure that a contiguous kernel virtual address mapping
* exists for the buffer backing the shmem GEM object.
@@ -318,26 +328,25 @@ static void *drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem)
* Returns:
* 0 on success or a negative error code on failure.
*/
-void *drm_gem_shmem_vmap(struct drm_gem_object *obj)
+int drm_gem_shmem_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);
- void *vaddr;
int ret;
ret = mutex_lock_interruptible(&shmem->vmap_lock);
if (ret)
- return ERR_PTR(ret);
- vaddr = drm_gem_shmem_vmap_locked(shmem);
+ return ret;
+ ret = drm_gem_shmem_vmap_locked(shmem, map);
mutex_unlock(&shmem->vmap_lock);
- return vaddr;
+ return ret;
}
EXPORT_SYMBOL(drm_gem_shmem_vmap);
-static void drm_gem_shmem_vunmap_locked(struct drm_gem_shmem_object *shmem)
+static void drm_gem_shmem_vunmap_locked(struct drm_gem_shmem_object *shmem,
+ struct dma_buf_map *map)
{
struct drm_gem_object *obj = &shmem->base;
- struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(shmem->vaddr);
if (WARN_ON_ONCE(!shmem->vmap_use_count))
return;
@@ -346,7 +355,7 @@ static void drm_gem_shmem_vunmap_locked(struct drm_gem_shmem_object *shmem)
return;
if (obj->import_attach)
- dma_buf_vunmap(obj->import_attach->dmabuf, &map);
+ dma_buf_vunmap(obj->import_attach->dmabuf, map);
else
vunmap(shmem->vaddr);
@@ -357,6 +366,7 @@ static void drm_gem_shmem_vunmap_locked(struct drm_gem_shmem_object *shmem)
/*
* drm_gem_shmem_vunmap - Unmap a virtual mapping fo a shmem GEM object
* @shmem: shmem GEM object
+ * @map: Kernel virtual address where the SHMEM GEM object was mapped
*
* This function cleans up a kernel virtual address mapping acquired by
* drm_gem_shmem_vmap(). The mapping is only removed when the use count drops to
@@ -366,12 +376,12 @@ static void drm_gem_shmem_vunmap_locked(struct drm_gem_shmem_object *shmem)
* also be called by drivers directly, in which case it will hide the
* differences between dma-buf imported and natively allocated objects.
*/
-void drm_gem_shmem_vunmap(struct drm_gem_object *obj, void *vaddr)
+void drm_gem_shmem_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);
mutex_lock(&shmem->vmap_lock);
- drm_gem_shmem_vunmap_locked(shmem);
+ drm_gem_shmem_vunmap_locked(shmem, map);
mutex_unlock(&shmem->vmap_lock);
}
EXPORT_SYMBOL(drm_gem_shmem_vunmap);
diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c
index bfc059945e31..96fbca6c2e5d 100644
--- a/drivers/gpu/drm/drm_gem_vram_helper.c
+++ b/drivers/gpu/drm/drm_gem_vram_helper.c
@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-or-later
+#include <linux/dma-buf-map.h>
#include <linux/module.h>
#include <drm/drm_debugfs.h>
@@ -113,8 +114,8 @@ static void drm_gem_vram_cleanup(struct drm_gem_vram_object *gbo)
* up; only release the GEM object.
*/
- WARN_ON(gbo->kmap_use_count);
- WARN_ON(gbo->kmap.virtual);
+ WARN_ON(gbo->vmap_use_count);
+ WARN_ON(dma_buf_map_is_set(&gbo->map));
drm_gem_object_release(&gbo->bo.base);
}
@@ -379,29 +380,37 @@ int drm_gem_vram_unpin(struct drm_gem_vram_object *gbo)
}
EXPORT_SYMBOL(drm_gem_vram_unpin);
-static void *drm_gem_vram_kmap_locked(struct drm_gem_vram_object *gbo)
+static int drm_gem_vram_kmap_locked(struct drm_gem_vram_object *gbo,
+ struct dma_buf_map *map)
{
int ret;
- struct ttm_bo_kmap_obj *kmap = &gbo->kmap;
- bool is_iomem;
- if (gbo->kmap_use_count > 0)
+ if (gbo->vmap_use_count > 0)
goto out;
- ret = ttm_bo_kmap(&gbo->bo, 0, gbo->bo.num_pages, kmap);
+ ret = ttm_bo_vmap(&gbo->bo, &gbo->map);
if (ret)
- return ERR_PTR(ret);
+ return ret;
out:
- ++gbo->kmap_use_count;
- return ttm_kmap_obj_virtual(kmap, &is_iomem);
+ ++gbo->vmap_use_count;
+ *map = gbo->map;
+
+ return 0;
}
-static void drm_gem_vram_kunmap_locked(struct drm_gem_vram_object *gbo)
+static void drm_gem_vram_kunmap_locked(struct drm_gem_vram_object *gbo,
+ struct dma_buf_map *map)
{
- if (WARN_ON_ONCE(!gbo->kmap_use_count))
+ struct drm_device *dev = gbo->bo.base.dev;
+
+ if (drm_WARN_ON_ONCE(dev, !gbo->vmap_use_count))
return;
- if (--gbo->kmap_use_count > 0)
+
+ if (drm_WARN_ON_ONCE(dev, !dma_buf_map_is_equal(&gbo->map, map)))
+ return; /* BUG: map not mapped from this BO */
+
+ if (--gbo->vmap_use_count > 0)
return;
/*
@@ -415,7 +424,9 @@ static void drm_gem_vram_kunmap_locked(struct drm_gem_vram_object *gbo)
/**
* drm_gem_vram_vmap() - Pins and maps a GEM VRAM object into kernel address
* space
- * @gbo: The GEM VRAM object to map
+ * @gbo: The GEM VRAM object to map
+ * @map: Returns the kernel virtual address of the VRAM GEM object's backing
+ * store.
*
* The vmap function pins a GEM VRAM object to its current location, either
* system or video memory, and maps its buffer into kernel address space.
@@ -424,48 +435,44 @@ static void drm_gem_vram_kunmap_locked(struct drm_gem_vram_object *gbo)
* unmap and unpin the GEM VRAM object.
*
* Returns:
- * The buffer's virtual address on success, or
- * an ERR_PTR()-encoded error code otherwise.
+ * 0 on success, or a negative error code otherwise.
*/
-void *drm_gem_vram_vmap(struct drm_gem_vram_object *gbo)
+int drm_gem_vram_vmap(struct drm_gem_vram_object *gbo, struct dma_buf_map *map)
{
int ret;
- void *base;
ret = ttm_bo_reserve(&gbo->bo, true, false, NULL);
if (ret)
- return ERR_PTR(ret);
+ return ret;
ret = drm_gem_vram_pin_locked(gbo, 0);
if (ret)
goto err_ttm_bo_unreserve;
- base = drm_gem_vram_kmap_locked(gbo);
- if (IS_ERR(base)) {
- ret = PTR_ERR(base);
+ ret = drm_gem_vram_kmap_locked(gbo, map);
+ if (ret)
goto err_drm_gem_vram_unpin_locked;
- }
ttm_bo_unreserve(&gbo->bo);
- return base;
+ return 0;
err_drm_gem_vram_unpin_locked:
drm_gem_vram_unpin_locked(gbo);
err_ttm_bo_unreserve:
ttm_bo_unreserve(&gbo->bo);
- return ERR_PTR(ret);
+ return ret;
}
EXPORT_SYMBOL(drm_gem_vram_vmap);
/**
* drm_gem_vram_vunmap() - Unmaps and unpins a GEM VRAM object
- * @gbo: The GEM VRAM object to unmap
- * @vaddr: The mapping's base address as returned by drm_gem_vram_vmap()
+ * @gbo: The GEM VRAM object to unmap
+ * @map: Kernel virtual address where the VRAM GEM object was mapped
*
* A call to drm_gem_vram_vunmap() unmaps and unpins a GEM VRAM buffer. See
* the documentation for drm_gem_vram_vmap() for more information.
*/
-void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo, void *vaddr)
+void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo, struct dma_buf_map *map)
{
int ret;
@@ -473,7 +480,7 @@ void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo, void *vaddr)
if (WARN_ONCE(ret, "ttm_bo_reserve_failed(): ret=%d\n", ret))
return;
- drm_gem_vram_kunmap_locked(gbo);
+ drm_gem_vram_kunmap_locked(gbo, map);
drm_gem_vram_unpin_locked(gbo);
ttm_bo_unreserve(&gbo->bo);
@@ -564,15 +571,13 @@ static void drm_gem_vram_bo_driver_move_notify(struct drm_gem_vram_object *gbo,
bool evict,
struct ttm_resource *new_mem)
{
- struct ttm_bo_kmap_obj *kmap = &gbo->kmap;
+ struct ttm_buffer_object *bo = &gbo->bo;
+ struct drm_device *dev = bo->base.dev;
- if (WARN_ON_ONCE(gbo->kmap_use_count))
+ if (drm_WARN_ON_ONCE(dev, gbo->vmap_use_count))
return;
- if (!kmap->virtual)
- return;
- ttm_bo_kunmap(kmap);
- kmap->virtual = NULL;
+ ttm_bo_vunmap(bo, &gbo->map);
}
static int drm_gem_vram_bo_driver_move(struct drm_gem_vram_object *gbo,
@@ -829,37 +834,33 @@ static void drm_gem_vram_object_unpin(struct drm_gem_object *gem)
}
/**
- * drm_gem_vram_object_vmap() - \
- Implements &struct drm_gem_object_funcs.vmap
- * @gem: The GEM object to map
+ * drm_gem_vram_object_vmap() -
+ * Implements &struct drm_gem_object_funcs.vmap
+ * @gem: The GEM object to map
+ * @map: Returns the kernel virtual address of the VRAM GEM object's backing
+ * store.
*
* Returns:
- * The buffers virtual address on success, or
- * NULL otherwise.
+ * 0 on success, or a negative error code otherwise.
*/
-static void *drm_gem_vram_object_vmap(struct drm_gem_object *gem)
+static int drm_gem_vram_object_vmap(struct drm_gem_object *gem, struct dma_buf_map *map)
{
struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(gem);
- void *base;
- base = drm_gem_vram_vmap(gbo);
- if (IS_ERR(base))
- return NULL;
- return base;
+ return drm_gem_vram_vmap(gbo, map);
}
/**
- * drm_gem_vram_object_vunmap() - \
- Implements &struct drm_gem_object_funcs.vunmap
- * @gem: The GEM object to unmap
- * @vaddr: The mapping's base address
+ * drm_gem_vram_object_vunmap() -
+ * Implements &struct drm_gem_object_funcs.vunmap
+ * @gem: The GEM object to unmap
+ * @map: Kernel virtual address where the VRAM GEM object was mapped
*/
-static void drm_gem_vram_object_vunmap(struct drm_gem_object *gem,
- void *vaddr)
+static void drm_gem_vram_object_vunmap(struct drm_gem_object *gem, struct dma_buf_map *map)
{
struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(gem);
- drm_gem_vram_vunmap(gbo, vaddr);
+ drm_gem_vram_vunmap(gbo, map);
}
/*
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
index 9682c26d89bb..f5be627e1de0 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
@@ -51,7 +51,7 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma);
int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
-void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj);
+int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma);
struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
index a6d9932a32ae..bc2543dd987d 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
@@ -22,9 +22,14 @@ struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj)
return drm_prime_pages_to_sg(obj->dev, etnaviv_obj->pages, npages);
}
-void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj)
+int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
- return etnaviv_gem_vmap(obj);
+ void *vaddr = etnaviv_gem_vmap(obj);
+ if (!vaddr)
+ return -ENOMEM;
+ dma_buf_map_set_vaddr(map, vaddr);
+
+ return 0;
}
int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
diff --git a/drivers/gpu/drm/lima/lima_gem.c b/drivers/gpu/drm/lima/lima_gem.c
index 11223fe348df..832e5280a6ed 100644
--- a/drivers/gpu/drm/lima/lima_gem.c
+++ b/drivers/gpu/drm/lima/lima_gem.c
@@ -182,14 +182,14 @@ static int lima_gem_pin(struct drm_gem_object *obj)
return drm_gem_shmem_pin(obj);
}
-static void *lima_gem_vmap(struct drm_gem_object *obj)
+static int lima_gem_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct lima_bo *bo = to_lima_bo(obj);
if (bo->heap_size)
- return ERR_PTR(-EINVAL);
+ return -EINVAL;
- return drm_gem_shmem_vmap(obj);
+ return drm_gem_shmem_vmap(obj, map);
}
static int lima_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
diff --git a/drivers/gpu/drm/lima/lima_sched.c b/drivers/gpu/drm/lima/lima_sched.c
index dc6df9e9a40d..a070a85f8f36 100644
--- a/drivers/gpu/drm/lima/lima_sched.c
+++ b/drivers/gpu/drm/lima/lima_sched.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0 OR MIT
/* Copyright 2017-2019 Qiang Yu <yuq825 at gmail.com> */
+#include <linux/dma-buf-map.h>
#include <linux/kthread.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
@@ -303,6 +304,8 @@ static void lima_sched_build_error_task_list(struct lima_sched_task *task)
struct lima_dump_chunk_buffer *buffer_chunk;
u32 size, task_size, mem_size;
int i;
+ struct dma_buf_map map;
+ int ret;
mutex_lock(&dev->error_task_list_lock);
@@ -388,15 +391,15 @@ static void lima_sched_build_error_task_list(struct lima_sched_task *task)
} else {
buffer_chunk->size = lima_bo_size(bo);
- data = drm_gem_shmem_vmap(&bo->base.base);
- if (IS_ERR_OR_NULL(data)) {
+ ret = drm_gem_shmem_vmap(&bo->base.base, &map);
+ if (ret) {
kvfree(et);
goto out;
}
- memcpy(buffer_chunk + 1, data, buffer_chunk->size);
+ memcpy(buffer_chunk + 1, map.vaddr, buffer_chunk->size);
- drm_gem_shmem_vunmap(&bo->base.base, data);
+ drm_gem_shmem_vunmap(&bo->base.base, &map);
}
buffer_chunk = (void *)(buffer_chunk + 1) + buffer_chunk->size;
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 38672f9e5c4f..8ef76769b97f 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -9,6 +9,7 @@
*/
#include <linux/delay.h>
+#include <linux/dma-buf-map.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_atomic_state_helper.h>
@@ -1556,15 +1557,18 @@ mgag200_handle_damage(struct mga_device *mdev, struct drm_framebuffer *fb,
struct drm_rect *clip)
{
struct drm_device *dev = &mdev->base;
+ struct dma_buf_map map;
void *vmap;
+ int ret;
- vmap = drm_gem_shmem_vmap(fb->obj[0]);
- if (drm_WARN_ON(dev, !vmap))
+ ret = drm_gem_shmem_vmap(fb->obj[0], &map);
+ if (drm_WARN_ON(dev, ret))
return; /* BUG: SHMEM BO should always be vmapped */
+ vmap = map.vaddr; /* TODO: Use mapping abstraction properly */
drm_fb_memcpy_dstclip(mdev->vram, vmap, fb, clip);
- drm_gem_shmem_vunmap(fb->obj[0], vmap);
+ drm_gem_shmem_vunmap(fb->obj[0], &map);
/* Always scanout image at VRAM offset 0 */
mgag200_set_startadd(mdev, (u32)0);
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index 5dec1e5694b7..9436310d0854 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -6,6 +6,7 @@ config DRM_NOUVEAU
select FW_LOADER
select DRM_KMS_HELPER
select DRM_TTM
+ select DRM_TTM_HELPER
select BACKLIGHT_CLASS_DEVICE if DRM_NOUVEAU_BACKLIGHT
select ACPI_VIDEO if ACPI && X86 && BACKLIGHT_CLASS_DEVICE && INPUT
select X86_PLATFORM_DEVICES if ACPI && X86
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.h b/drivers/gpu/drm/nouveau/nouveau_bo.h
index 641ef6298a0e..6045b85a762a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.h
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.h
@@ -39,8 +39,6 @@ struct nouveau_bo {
unsigned mode;
struct nouveau_drm_tile *tile;
-
- struct ttm_bo_kmap_obj dma_buf_vmap;
};
static inline struct nouveau_bo *
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index 9a421c3949de..f942b526b0a5 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -24,6 +24,8 @@
*
*/
+#include <drm/drm_gem_ttm_helper.h>
+
#include "nouveau_drv.h"
#include "nouveau_dma.h"
#include "nouveau_fence.h"
@@ -176,8 +178,8 @@ const struct drm_gem_object_funcs nouveau_gem_object_funcs = {
.pin = nouveau_gem_prime_pin,
.unpin = nouveau_gem_prime_unpin,
.get_sg_table = nouveau_gem_prime_get_sg_table,
- .vmap = nouveau_gem_prime_vmap,
- .vunmap = nouveau_gem_prime_vunmap,
+ .vmap = drm_gem_ttm_vmap,
+ .vunmap = drm_gem_ttm_vunmap,
};
int
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.h b/drivers/gpu/drm/nouveau/nouveau_gem.h
index b35c180322e2..3b919c7c931c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.h
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.h
@@ -37,7 +37,5 @@ extern void nouveau_gem_prime_unpin(struct drm_gem_object *);
extern struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *);
extern struct drm_gem_object *nouveau_gem_prime_import_sg_table(
struct drm_device *, struct dma_buf_attachment *, struct sg_table *);
-extern void *nouveau_gem_prime_vmap(struct drm_gem_object *);
-extern void nouveau_gem_prime_vunmap(struct drm_gem_object *, void *);
#endif
diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c
index a8264aebf3d4..2f16b5249283 100644
--- a/drivers/gpu/drm/nouveau/nouveau_prime.c
+++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
@@ -35,26 +35,6 @@ struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj)
return drm_prime_pages_to_sg(obj->dev, nvbo->bo.ttm->pages, npages);
}
-void *nouveau_gem_prime_vmap(struct drm_gem_object *obj)
-{
- struct nouveau_bo *nvbo = nouveau_gem_object(obj);
- int ret;
-
- ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.num_pages,
- &nvbo->dma_buf_vmap);
- if (ret)
- return ERR_PTR(ret);
-
- return nvbo->dma_buf_vmap.virtual;
-}
-
-void nouveau_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
-{
- struct nouveau_bo *nvbo = nouveau_gem_object(obj);
-
- ttm_bo_kunmap(&nvbo->dma_buf_vmap);
-}
-
struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,
struct sg_table *sg)
diff --git a/drivers/gpu/drm/panfrost/panfrost_perfcnt.c b/drivers/gpu/drm/panfrost/panfrost_perfcnt.c
index fdbc8d949135..5ab03d605f57 100644
--- a/drivers/gpu/drm/panfrost/panfrost_perfcnt.c
+++ b/drivers/gpu/drm/panfrost/panfrost_perfcnt.c
@@ -5,6 +5,7 @@
#include <drm/drm_gem_shmem_helper.h>
#include <drm/panfrost_drm.h>
#include <linux/completion.h>
+#include <linux/dma-buf-map.h>
#include <linux/iopoll.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
@@ -72,6 +73,7 @@ static int panfrost_perfcnt_enable_locked(struct panfrost_device *pfdev,
{
struct panfrost_file_priv *user = file_priv->driver_priv;
struct panfrost_perfcnt *perfcnt = pfdev->perfcnt;
+ struct dma_buf_map map;
struct drm_gem_shmem_object *bo;
u32 cfg, as;
int ret;
@@ -103,11 +105,10 @@ static int panfrost_perfcnt_enable_locked(struct panfrost_device *pfdev,
goto err_close_bo;
}
- perfcnt->buf = drm_gem_shmem_vmap(&bo->base);
- if (IS_ERR(perfcnt->buf)) {
- ret = PTR_ERR(perfcnt->buf);
+ ret = drm_gem_shmem_vmap(&bo->base, &map);
+ if (ret)
goto err_put_mapping;
- }
+ perfcnt->buf = map.vaddr;
/*
* Invalidate the cache and clear the counters to start from a fresh
@@ -163,7 +164,7 @@ static int panfrost_perfcnt_enable_locked(struct panfrost_device *pfdev,
return 0;
err_vunmap:
- drm_gem_shmem_vunmap(&bo->base, perfcnt->buf);
+ drm_gem_shmem_vunmap(&bo->base, &map);
err_put_mapping:
panfrost_gem_mapping_put(perfcnt->mapping);
err_close_bo:
@@ -180,6 +181,7 @@ static int panfrost_perfcnt_disable_locked(struct panfrost_device *pfdev,
{
struct panfrost_file_priv *user = file_priv->driver_priv;
struct panfrost_perfcnt *perfcnt = pfdev->perfcnt;
+ struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(perfcnt->buf);
if (user != perfcnt->user)
return -EINVAL;
@@ -192,7 +194,7 @@ static int panfrost_perfcnt_disable_locked(struct panfrost_device *pfdev,
GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_OFF));
perfcnt->user = NULL;
- drm_gem_shmem_vunmap(&perfcnt->mapping->obj->base.base, perfcnt->buf);
+ drm_gem_shmem_vunmap(&perfcnt->mapping->obj->base.base, &map);
perfcnt->buf = NULL;
panfrost_gem_close(&perfcnt->mapping->obj->base.base, file_priv);
panfrost_mmu_as_put(pfdev, perfcnt->mapping->mmu);
diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
index 45fd76e04bdc..e165fa9b2089 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -25,6 +25,7 @@
#include <linux/crc32.h>
#include <linux/delay.h>
+#include <linux/dma-buf-map.h>
#include <drm/drm_drv.h>
#include <drm/drm_atomic.h>
@@ -581,6 +582,8 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane,
struct drm_gem_object *obj;
struct qxl_bo *cursor_bo = NULL, *user_bo = NULL, *old_cursor_bo = NULL;
int ret;
+ struct dma_buf_map user_map;
+ struct dma_buf_map cursor_map;
void *user_ptr;
int size = 64*64*4;
@@ -595,9 +598,10 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane,
user_bo = gem_to_qxl_bo(obj);
/* pinning is done in the prepare/cleanup framevbuffer */
- ret = qxl_bo_kmap(user_bo, &user_ptr);
+ ret = qxl_bo_kmap(user_bo, &user_map);
if (ret)
goto out_free_release;
+ user_ptr = user_map.vaddr; /* TODO: Use mapping abstraction properly */
ret = qxl_alloc_bo_reserved(qdev, release,
sizeof(struct qxl_cursor) + size,
@@ -613,7 +617,7 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane,
if (ret)
goto out_unpin;
- ret = qxl_bo_kmap(cursor_bo, (void **)&cursor);
+ ret = qxl_bo_kmap(cursor_bo, &cursor_map);
if (ret)
goto out_backoff;
@@ -1133,6 +1137,7 @@ int qxl_create_monitors_object(struct qxl_device *qdev)
{
int ret;
struct drm_gem_object *gobj;
+ struct dma_buf_map map;
int monitors_config_size = sizeof(struct qxl_monitors_config) +
qxl_num_crtc * sizeof(struct qxl_head);
@@ -1149,7 +1154,7 @@ int qxl_create_monitors_object(struct qxl_device *qdev)
if (ret)
return ret;
- qxl_bo_kmap(qdev->monitors_config_bo, NULL);
+ qxl_bo_kmap(qdev->monitors_config_bo, &map);
qdev->monitors_config = qdev->monitors_config_bo->kptr;
qdev->ram_header->monitors_config =
diff --git a/drivers/gpu/drm/qxl/qxl_draw.c b/drivers/gpu/drm/qxl/qxl_draw.c
index 3599db096973..7b7acb910780 100644
--- a/drivers/gpu/drm/qxl/qxl_draw.c
+++ b/drivers/gpu/drm/qxl/qxl_draw.c
@@ -20,6 +20,8 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
+#include <linux/dma-buf-map.h>
+
#include <drm/drm_fourcc.h>
#include "qxl_drv.h"
@@ -42,13 +44,15 @@ static struct qxl_rect *drawable_set_clipping(struct qxl_device *qdev,
unsigned int num_clips,
struct qxl_bo *clips_bo)
{
+ struct dma_buf_map map;
struct qxl_clip_rects *dev_clips;
int ret;
- ret = qxl_bo_kmap(clips_bo, (void **)&dev_clips);
- if (ret) {
+ ret = qxl_bo_kmap(clips_bo, &map);
+ if (ret)
return NULL;
- }
+ dev_clips = map.vaddr; /* TODO: Use mapping abstraction properly */
+
dev_clips->num_rects = num_clips;
dev_clips->chunk.next_chunk = 0;
dev_clips->chunk.prev_chunk = 0;
@@ -142,6 +146,7 @@ void qxl_draw_dirty_fb(struct qxl_device *qdev,
int stride = fb->pitches[0];
/* depth is not actually interesting, we don't mask with it */
int depth = fb->format->cpp[0] * 8;
+ struct dma_buf_map surface_map;
uint8_t *surface_base;
struct qxl_release *release;
struct qxl_bo *clips_bo;
@@ -197,9 +202,10 @@ void qxl_draw_dirty_fb(struct qxl_device *qdev,
if (ret)
goto out_release_backoff;
- ret = qxl_bo_kmap(bo, (void **)&surface_base);
+ ret = qxl_bo_kmap(bo, &surface_map);
if (ret)
goto out_release_backoff;
+ surface_base = surface_map.vaddr; /* TODO: Use mapping abstraction properly */
ret = qxl_image_init(qdev, release, dimage, surface_base,
left - dumb_shadow_offset,
diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
index 3602e8b34189..eb437fea5d9e 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.h
+++ b/drivers/gpu/drm/qxl/qxl_drv.h
@@ -30,6 +30,7 @@
* Definitions taken from spice-protocol, plus kernel driver specific bits.
*/
+#include <linux/dma-buf-map.h>
#include <linux/dma-fence.h>
#include <linux/firmware.h>
#include <linux/platform_device.h>
@@ -50,6 +51,8 @@
#include "qxl_dev.h"
+struct dma_buf_map;
+
#define DRIVER_AUTHOR "Dave Airlie"
#define DRIVER_NAME "qxl"
@@ -79,7 +82,7 @@ struct qxl_bo {
/* Protected by tbo.reserved */
struct ttm_place placements[3];
struct ttm_placement placement;
- struct ttm_bo_kmap_obj kmap;
+ struct dma_buf_map map;
void *kptr;
unsigned int map_count;
int type;
@@ -335,7 +338,6 @@ int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv);
void qxl_gem_object_close(struct drm_gem_object *obj,
struct drm_file *file_priv);
void qxl_bo_force_delete(struct qxl_device *qdev);
-int qxl_bo_kmap(struct qxl_bo *bo, void **ptr);
/* qxl_dumb.c */
int qxl_mode_dumb_create(struct drm_file *file_priv,
@@ -445,8 +447,9 @@ struct sg_table *qxl_gem_prime_get_sg_table(struct drm_gem_object *obj);
struct drm_gem_object *qxl_gem_prime_import_sg_table(
struct drm_device *dev, struct dma_buf_attachment *attach,
struct sg_table *sgt);
-void *qxl_gem_prime_vmap(struct drm_gem_object *obj);
-void qxl_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
+int qxl_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
+void qxl_gem_prime_vunmap(struct drm_gem_object *obj,
+ struct dma_buf_map *map);
int qxl_gem_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma);
diff --git a/drivers/gpu/drm/qxl/qxl_object.c b/drivers/gpu/drm/qxl/qxl_object.c
index 547d46c14d56..ceebc5881f68 100644
--- a/drivers/gpu/drm/qxl/qxl_object.c
+++ b/drivers/gpu/drm/qxl/qxl_object.c
@@ -23,10 +23,12 @@
* Alon Levy
*/
+#include <linux/dma-buf-map.h>
+#include <linux/io-mapping.h>
+
#include "qxl_drv.h"
#include "qxl_object.h"
-#include <linux/io-mapping.h>
static void qxl_ttm_bo_destroy(struct ttm_buffer_object *tbo)
{
struct qxl_bo *bo;
@@ -152,24 +154,27 @@ int qxl_bo_create(struct qxl_device *qdev,
return 0;
}
-int qxl_bo_kmap(struct qxl_bo *bo, void **ptr)
+int qxl_bo_kmap(struct qxl_bo *bo, struct dma_buf_map *map)
{
- bool is_iomem;
int r;
if (bo->kptr) {
- if (ptr)
- *ptr = bo->kptr;
bo->map_count++;
- return 0;
+ goto out;
}
- r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
+ r = ttm_bo_vmap(&bo->tbo, &bo->map);
if (r)
return r;
- bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
- if (ptr)
- *ptr = bo->kptr;
bo->map_count = 1;
+
+ /* TODO: Remove kptr in favor of map everywhere. */
+ if (bo->map.is_iomem)
+ bo->kptr = (void *)bo->map.vaddr_iomem;
+ else
+ bo->kptr = bo->map.vaddr;
+
+out:
+ *map = bo->map;
return 0;
}
@@ -180,6 +185,7 @@ void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev,
void *rptr;
int ret;
struct io_mapping *map;
+ struct dma_buf_map bo_map;
if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
map = qdev->vram_mapping;
@@ -196,9 +202,10 @@ void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev,
return rptr;
}
- ret = qxl_bo_kmap(bo, &rptr);
+ ret = qxl_bo_kmap(bo, &bo_map);
if (ret)
return NULL;
+ rptr = bo_map.vaddr; /* TODO: Use mapping abstraction properly */
rptr += page_offset * PAGE_SIZE;
return rptr;
@@ -212,7 +219,7 @@ void qxl_bo_kunmap(struct qxl_bo *bo)
if (bo->map_count > 0)
return;
bo->kptr = NULL;
- ttm_bo_kunmap(&bo->kmap);
+ ttm_bo_vunmap(&bo->tbo, &bo->map);
}
void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev,
diff --git a/drivers/gpu/drm/qxl/qxl_object.h b/drivers/gpu/drm/qxl/qxl_object.h
index 09a5c818324d..ebf24c9d2bf2 100644
--- a/drivers/gpu/drm/qxl/qxl_object.h
+++ b/drivers/gpu/drm/qxl/qxl_object.h
@@ -63,7 +63,7 @@ extern int qxl_bo_create(struct qxl_device *qdev,
bool kernel, bool pinned, u32 domain,
struct qxl_surface *surf,
struct qxl_bo **bo_ptr);
-extern int qxl_bo_kmap(struct qxl_bo *bo, void **ptr);
+extern int qxl_bo_kmap(struct qxl_bo *bo, struct dma_buf_map *map);
extern void qxl_bo_kunmap(struct qxl_bo *bo);
void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, int page_offset);
void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, void *map);
diff --git a/drivers/gpu/drm/qxl/qxl_prime.c b/drivers/gpu/drm/qxl/qxl_prime.c
index 7d3816fca5a8..4aa949799446 100644
--- a/drivers/gpu/drm/qxl/qxl_prime.c
+++ b/drivers/gpu/drm/qxl/qxl_prime.c
@@ -54,20 +54,20 @@ struct drm_gem_object *qxl_gem_prime_import_sg_table(
return ERR_PTR(-ENOSYS);
}
-void *qxl_gem_prime_vmap(struct drm_gem_object *obj)
+int qxl_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct qxl_bo *bo = gem_to_qxl_bo(obj);
- void *ptr;
int ret;
- ret = qxl_bo_kmap(bo, &ptr);
+ ret = qxl_bo_kmap(bo, map);
if (ret < 0)
- return ERR_PTR(ret);
+ return ret;
- return ptr;
+ return 0;
}
-void qxl_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
+void qxl_gem_prime_vunmap(struct drm_gem_object *obj,
+ struct dma_buf_map *map)
{
struct qxl_bo *bo = gem_to_qxl_bo(obj);
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 5d54bccebd4d..44cb5ee6fc20 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -509,7 +509,6 @@ struct radeon_bo {
/* Constant after initialization */
struct radeon_device *rdev;
- struct ttm_bo_kmap_obj dma_buf_vmap;
pid_t pid;
#ifdef CONFIG_MMU_NOTIFIER
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index 0ccd7213e41f..d2876ce3bc9e 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -31,6 +31,7 @@
#include <drm/drm_debugfs.h>
#include <drm/drm_device.h>
#include <drm/drm_file.h>
+#include <drm/drm_gem_ttm_helper.h>
#include <drm/radeon_drm.h>
#include "radeon.h"
@@ -40,8 +41,6 @@ struct dma_buf *radeon_gem_prime_export(struct drm_gem_object *gobj,
struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj);
int radeon_gem_prime_pin(struct drm_gem_object *obj);
void radeon_gem_prime_unpin(struct drm_gem_object *obj);
-void *radeon_gem_prime_vmap(struct drm_gem_object *obj);
-void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
static const struct drm_gem_object_funcs radeon_gem_object_funcs;
@@ -235,8 +234,8 @@ static const struct drm_gem_object_funcs radeon_gem_object_funcs = {
.pin = radeon_gem_prime_pin,
.unpin = radeon_gem_prime_unpin,
.get_sg_table = radeon_gem_prime_get_sg_table,
- .vmap = radeon_gem_prime_vmap,
- .vunmap = radeon_gem_prime_vunmap,
+ .vmap = drm_gem_ttm_vmap,
+ .vunmap = drm_gem_ttm_vunmap,
};
/*
diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c
index b9de0e51c0be..088d39a51c0d 100644
--- a/drivers/gpu/drm/radeon/radeon_prime.c
+++ b/drivers/gpu/drm/radeon/radeon_prime.c
@@ -39,26 +39,6 @@ struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj)
return drm_prime_pages_to_sg(obj->dev, bo->tbo.ttm->pages, npages);
}
-void *radeon_gem_prime_vmap(struct drm_gem_object *obj)
-{
- struct radeon_bo *bo = gem_to_radeon_bo(obj);
- int ret;
-
- ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages,
- &bo->dma_buf_vmap);
- if (ret)
- return ERR_PTR(ret);
-
- return bo->dma_buf_vmap.virtual;
-}
-
-void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
-{
- struct radeon_bo *bo = gem_to_radeon_bo(obj);
-
- ttm_bo_kunmap(&bo->dma_buf_vmap);
-}
-
struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,
struct sg_table *sg)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index 7d5ebb10323b..7971f57436dd 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -532,26 +532,32 @@ rockchip_gem_prime_import_sg_table(struct drm_device *drm,
return ERR_PTR(ret);
}
-void *rockchip_gem_prime_vmap(struct drm_gem_object *obj)
+int rockchip_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
- if (rk_obj->pages)
- return vmap(rk_obj->pages, rk_obj->num_pages, VM_MAP,
- pgprot_writecombine(PAGE_KERNEL));
+ if (rk_obj->pages) {
+ void *vaddr = vmap(rk_obj->pages, rk_obj->num_pages, VM_MAP,
+ pgprot_writecombine(PAGE_KERNEL));
+ if (!vaddr)
+ return -ENOMEM;
+ dma_buf_map_set_vaddr(map, vaddr);
+ return 0;
+ }
if (rk_obj->dma_attrs & DMA_ATTR_NO_KERNEL_MAPPING)
- return NULL;
+ return -ENOMEM;
+ dma_buf_map_set_vaddr(map, rk_obj->kvaddr);
- return rk_obj->kvaddr;
+ return 0;
}
-void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
+void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
if (rk_obj->pages) {
- vunmap(vaddr);
+ vunmap(map->vaddr);
return;
}
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
index 7ffc541bea07..5a70a56cd406 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
@@ -31,8 +31,8 @@ struct drm_gem_object *
rockchip_gem_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,
struct sg_table *sg);
-void *rockchip_gem_prime_vmap(struct drm_gem_object *obj);
-void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
+int rockchip_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
+void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map);
/* drm driver mmap file operations */
int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma);
diff --git a/drivers/gpu/drm/tiny/cirrus.c b/drivers/gpu/drm/tiny/cirrus.c
index 744a8e337e41..c02e35ed6e76 100644
--- a/drivers/gpu/drm/tiny/cirrus.c
+++ b/drivers/gpu/drm/tiny/cirrus.c
@@ -17,6 +17,7 @@
*/
#include <linux/console.h>
+#include <linux/dma-buf-map.h>
#include <linux/module.h>
#include <linux/pci.h>
@@ -314,6 +315,7 @@ static int cirrus_fb_blit_rect(struct drm_framebuffer *fb,
struct drm_rect *rect)
{
struct cirrus_device *cirrus = to_cirrus(fb->dev);
+ struct dma_buf_map map;
void *vmap;
int idx, ret;
@@ -321,10 +323,10 @@ static int cirrus_fb_blit_rect(struct drm_framebuffer *fb,
if (!drm_dev_enter(&cirrus->dev, &idx))
goto out;
- ret = -ENOMEM;
- vmap = drm_gem_shmem_vmap(fb->obj[0]);
- if (!vmap)
+ ret = drm_gem_shmem_vmap(fb->obj[0], &map);
+ if (ret)
goto out_dev_exit;
+ vmap = map.vaddr; /* TODO: Use mapping abstraction properly */
if (cirrus->cpp == fb->format->cpp[0])
drm_fb_memcpy_dstclip(cirrus->vram,
@@ -343,7 +345,7 @@ static int cirrus_fb_blit_rect(struct drm_framebuffer *fb,
else
WARN_ON_ONCE("cpp mismatch");
- drm_gem_shmem_vunmap(fb->obj[0], vmap);
+ drm_gem_shmem_vunmap(fb->obj[0], &map);
ret = 0;
out_dev_exit:
diff --git a/drivers/gpu/drm/tiny/gm12u320.c b/drivers/gpu/drm/tiny/gm12u320.c
index cc397671f689..12a890cea6e9 100644
--- a/drivers/gpu/drm/tiny/gm12u320.c
+++ b/drivers/gpu/drm/tiny/gm12u320.c
@@ -248,6 +248,7 @@ static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
{
int block, dst_offset, len, remain, ret, x1, x2, y1, y2;
struct drm_framebuffer *fb;
+ struct dma_buf_map map;
void *vaddr;
u8 *src;
@@ -262,11 +263,12 @@ static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
y1 = gm12u320->fb_update.rect.y1;
y2 = gm12u320->fb_update.rect.y2;
- vaddr = drm_gem_shmem_vmap(fb->obj[0]);
- if (IS_ERR(vaddr)) {
- GM12U320_ERR("failed to vmap fb: %ld\n", PTR_ERR(vaddr));
+ ret = drm_gem_shmem_vmap(fb->obj[0], &map);
+ if (ret) {
+ GM12U320_ERR("failed to vmap fb: %d\n", ret);
goto put_fb;
}
+ vaddr = map.vaddr; /* TODO: Use mapping abstraction properly */
if (fb->obj[0]->import_attach) {
ret = dma_buf_begin_cpu_access(
@@ -318,7 +320,7 @@ static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
GM12U320_ERR("dma_buf_end_cpu_access err: %d\n", ret);
}
vunmap:
- drm_gem_shmem_vunmap(fb->obj[0], vaddr);
+ drm_gem_shmem_vunmap(fb->obj[0], &map);
put_fb:
drm_framebuffer_put(fb);
gm12u320->fb_update.fb = NULL;
diff --git a/drivers/gpu/drm/udl/udl_modeset.c b/drivers/gpu/drm/udl/udl_modeset.c
index fef43f4e3bac..42eeba1dfdbf 100644
--- a/drivers/gpu/drm/udl/udl_modeset.c
+++ b/drivers/gpu/drm/udl/udl_modeset.c
@@ -276,6 +276,7 @@ static int udl_handle_damage(struct drm_framebuffer *fb, int x, int y,
struct urb *urb;
struct drm_rect clip;
int log_bpp;
+ struct dma_buf_map map;
void *vaddr;
ret = udl_log_cpp(fb->format->cpp[0]);
@@ -296,11 +297,12 @@ static int udl_handle_damage(struct drm_framebuffer *fb, int x, int y,
return ret;
}
- vaddr = drm_gem_shmem_vmap(fb->obj[0]);
- if (IS_ERR(vaddr)) {
+ ret = drm_gem_shmem_vmap(fb->obj[0], &map);
+ if (ret) {
DRM_ERROR("failed to vmap fb\n");
goto out_dma_buf_end_cpu_access;
}
+ vaddr = map.vaddr; /* TODO: Use mapping abstraction properly */
urb = udl_get_urb(dev);
if (!urb)
@@ -333,7 +335,7 @@ static int udl_handle_damage(struct drm_framebuffer *fb, int x, int y,
ret = 0;
out_drm_gem_shmem_vunmap:
- drm_gem_shmem_vunmap(fb->obj[0], vaddr);
+ drm_gem_shmem_vunmap(fb->obj[0], &map);
out_dma_buf_end_cpu_access:
if (import_attach) {
tmp_ret = dma_buf_end_cpu_access(import_attach->dmabuf,
diff --git a/drivers/gpu/drm/vboxvideo/vbox_mode.c b/drivers/gpu/drm/vboxvideo/vbox_mode.c
index 931c55126148..f268fb258c83 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_mode.c
+++ b/drivers/gpu/drm/vboxvideo/vbox_mode.c
@@ -9,6 +9,8 @@
* Michael Thayer <michael.thayer at oracle.com,
* Hans de Goede <hdegoede at redhat.com>
*/
+
+#include <linux/dma-buf-map.h>
#include <linux/export.h>
#include <drm/drm_atomic.h>
@@ -384,6 +386,8 @@ static void vbox_cursor_atomic_update(struct drm_plane *plane,
u32 height = plane->state->crtc_h;
size_t data_size, mask_size;
u32 flags;
+ struct dma_buf_map map;
+ int ret;
u8 *src;
/*
@@ -397,8 +401,8 @@ static void vbox_cursor_atomic_update(struct drm_plane *plane,
vbox_crtc->cursor_enabled = true;
- src = drm_gem_vram_vmap(gbo);
- if (IS_ERR(src)) {
+ ret = drm_gem_vram_vmap(gbo, &map);
+ if (ret) {
/*
* BUG: we should have pinned the BO in prepare_fb().
*/
@@ -406,6 +410,7 @@ static void vbox_cursor_atomic_update(struct drm_plane *plane,
DRM_WARN("Could not map cursor bo, skipping update\n");
return;
}
+ src = map.vaddr; /* TODO: Use mapping abstraction properly */
/*
* The mask must be calculated based on the alpha
@@ -416,7 +421,7 @@ static void vbox_cursor_atomic_update(struct drm_plane *plane,
data_size = width * height * 4 + mask_size;
copy_cursor_image(src, vbox->cursor_data, width, height, mask_size);
- drm_gem_vram_vunmap(gbo, src);
+ drm_gem_vram_vunmap(gbo, &map);
flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
VBOX_MOUSE_POINTER_ALPHA;
diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c
index 557f0d1e6437..f290a9a942dc 100644
--- a/drivers/gpu/drm/vc4/vc4_bo.c
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
@@ -785,16 +785,16 @@ int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
return drm_gem_cma_prime_mmap(obj, vma);
}
-void *vc4_prime_vmap(struct drm_gem_object *obj)
+int vc4_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct vc4_bo *bo = to_vc4_bo(obj);
if (bo->validated_shader) {
DRM_DEBUG("mmaping of shader BOs not allowed.\n");
- return ERR_PTR(-EINVAL);
+ return -EINVAL;
}
- return drm_gem_cma_prime_vmap(obj);
+ return drm_gem_cma_prime_vmap(obj, map);
}
struct drm_gem_object *
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
index cc79b1aaa878..904f2c36c963 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -806,7 +806,7 @@ int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
struct drm_gem_object *vc4_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,
struct sg_table *sgt);
-void *vc4_prime_vmap(struct drm_gem_object *obj);
+int vc4_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
int vc4_bo_cache_init(struct drm_device *dev);
void vc4_bo_cache_destroy(struct drm_device *dev);
int vc4_bo_inc_usecnt(struct vc4_bo *bo);
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index fa54a6d1403d..b2aa26e1e4a2 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -361,24 +361,30 @@ static struct drm_gem_object *vgem_prime_import_sg_table(struct drm_device *dev,
return &obj->base;
}
-static void *vgem_prime_vmap(struct drm_gem_object *obj)
+static int vgem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct drm_vgem_gem_object *bo = to_vgem_bo(obj);
long n_pages = obj->size >> PAGE_SHIFT;
struct page **pages;
+ void *vaddr;
pages = vgem_pin_pages(bo);
if (IS_ERR(pages))
- return NULL;
+ return PTR_ERR(pages);
+
+ vaddr = vmap(pages, n_pages, 0, pgprot_writecombine(PAGE_KERNEL));
+ if (!vaddr)
+ return -ENOMEM;
+ dma_buf_map_set_vaddr(map, vaddr);
- return vmap(pages, n_pages, 0, pgprot_writecombine(PAGE_KERNEL));
+ return 0;
}
-static void vgem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
+static void vgem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct drm_vgem_gem_object *bo = to_vgem_bo(obj);
- vunmap(vaddr);
+ vunmap(map->vaddr);
vgem_unpin_pages(bo);
}
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index 9890137bcb8d..0824327cc860 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -1,5 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
+#include <linux/dma-buf-map.h>
+
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fourcc.h>
@@ -146,15 +148,16 @@ static int vkms_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct drm_gem_object *gem_obj;
- void *vaddr;
+ struct dma_buf_map map;
+ int ret;
if (!state->fb)
return 0;
gem_obj = drm_gem_fb_get_obj(state->fb, 0);
- vaddr = drm_gem_shmem_vmap(gem_obj);
- if (IS_ERR(vaddr))
- DRM_ERROR("vmap failed: %li\n", PTR_ERR(vaddr));
+ ret = drm_gem_shmem_vmap(gem_obj, &map);
+ if (ret)
+ DRM_ERROR("vmap failed: %d\n", ret);
return drm_gem_fb_prepare_fb(plane, state);
}
@@ -164,13 +167,15 @@ static void vkms_cleanup_fb(struct drm_plane *plane,
{
struct drm_gem_object *gem_obj;
struct drm_gem_shmem_object *shmem_obj;
+ struct dma_buf_map map;
if (!old_state->fb)
return;
gem_obj = drm_gem_fb_get_obj(old_state->fb, 0);
shmem_obj = to_drm_gem_shmem_obj(drm_gem_fb_get_obj(old_state->fb, 0));
- drm_gem_shmem_vunmap(gem_obj, shmem_obj->vaddr);
+ dma_buf_map_set_vaddr(&map, shmem_obj->vaddr);
+ drm_gem_shmem_vunmap(gem_obj, &map);
}
static const struct drm_plane_helper_funcs vkms_primary_helper_funcs = {
diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
index 26b903926872..67f80ab1e85f 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
-#include "vkms_drv.h"
+#include <linux/dma-buf-map.h>
+
#include <drm/drm_fourcc.h>
#include <drm/drm_writeback.h>
#include <drm/drm_probe_helper.h>
@@ -8,6 +9,8 @@
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_gem_shmem_helper.h>
+#include "vkms_drv.h"
+
static const u32 vkms_wb_formats[] = {
DRM_FORMAT_XRGB8888,
};
@@ -65,19 +68,20 @@ static int vkms_wb_prepare_job(struct drm_writeback_connector *wb_connector,
struct drm_writeback_job *job)
{
struct drm_gem_object *gem_obj;
- void *vaddr;
+ struct dma_buf_map map;
+ int ret;
if (!job->fb)
return 0;
gem_obj = drm_gem_fb_get_obj(job->fb, 0);
- vaddr = drm_gem_shmem_vmap(gem_obj);
- if (IS_ERR(vaddr)) {
- DRM_ERROR("vmap failed: %li\n", PTR_ERR(vaddr));
- return PTR_ERR(vaddr);
+ ret = drm_gem_shmem_vmap(gem_obj, &map);
+ if (ret) {
+ DRM_ERROR("vmap failed: %d\n", ret);
+ return ret;
}
- job->priv = vaddr;
+ job->priv = map.vaddr;
return 0;
}
@@ -87,12 +91,14 @@ static void vkms_wb_cleanup_job(struct drm_writeback_connector *connector,
{
struct drm_gem_object *gem_obj;
struct vkms_device *vkmsdev;
+ struct dma_buf_map map;
if (!job->fb)
return;
gem_obj = drm_gem_fb_get_obj(job->fb, 0);
- drm_gem_shmem_vunmap(gem_obj, job->priv);
+ dma_buf_map_set_vaddr(&map, job->priv);
+ drm_gem_shmem_vunmap(gem_obj, &map);
vkmsdev = drm_device_to_vkms_device(gem_obj->dev);
vkms_set_composer(&vkmsdev->output, false);
diff --git a/drivers/gpu/drm/xen/xen_drm_front_gem.c b/drivers/gpu/drm/xen/xen_drm_front_gem.c
index 4f34ef34ba60..74db5a840bed 100644
--- a/drivers/gpu/drm/xen/xen_drm_front_gem.c
+++ b/drivers/gpu/drm/xen/xen_drm_front_gem.c
@@ -290,22 +290,28 @@ int xen_drm_front_gem_mmap(struct file *filp, struct vm_area_struct *vma)
return gem_mmap_obj(xen_obj, vma);
}
-void *xen_drm_front_gem_prime_vmap(struct drm_gem_object *gem_obj)
+int xen_drm_front_gem_prime_vmap(struct drm_gem_object *gem_obj, struct dma_buf_map *map)
{
struct xen_gem_object *xen_obj = to_xen_gem_obj(gem_obj);
+ void *vaddr;
if (!xen_obj->pages)
- return NULL;
+ return -ENOMEM;
/* Please see comment in gem_mmap_obj on mapping and attributes. */
- return vmap(xen_obj->pages, xen_obj->num_pages,
- VM_MAP, PAGE_KERNEL);
+ vaddr = vmap(xen_obj->pages, xen_obj->num_pages,
+ VM_MAP, PAGE_KERNEL);
+ if (!vaddr)
+ return -ENOMEM;
+ dma_buf_map_set_vaddr(map, vaddr);
+
+ return 0;
}
void xen_drm_front_gem_prime_vunmap(struct drm_gem_object *gem_obj,
- void *vaddr)
+ struct dma_buf_map *map)
{
- vunmap(vaddr);
+ vunmap(map->vaddr);
}
int xen_drm_front_gem_prime_mmap(struct drm_gem_object *gem_obj,
diff --git a/drivers/gpu/drm/xen/xen_drm_front_gem.h b/drivers/gpu/drm/xen/xen_drm_front_gem.h
index a39675fa31b2..a4e67d0a149c 100644
--- a/drivers/gpu/drm/xen/xen_drm_front_gem.h
+++ b/drivers/gpu/drm/xen/xen_drm_front_gem.h
@@ -12,6 +12,7 @@
#define __XEN_DRM_FRONT_GEM_H
struct dma_buf_attachment;
+struct dma_buf_map;
struct drm_device;
struct drm_gem_object;
struct file;
@@ -34,10 +35,11 @@ void xen_drm_front_gem_free_object_unlocked(struct drm_gem_object *gem_obj);
int xen_drm_front_gem_mmap(struct file *filp, struct vm_area_struct *vma);
-void *xen_drm_front_gem_prime_vmap(struct drm_gem_object *gem_obj);
+int xen_drm_front_gem_prime_vmap(struct drm_gem_object *gem_obj,
+ struct dma_buf_map *map);
void xen_drm_front_gem_prime_vunmap(struct drm_gem_object *gem_obj,
- void *vaddr);
+ struct dma_buf_map *map);
int xen_drm_front_gem_prime_mmap(struct drm_gem_object *gem_obj,
struct vm_area_struct *vma);
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index c38dd35da00b..5e6daa1c982f 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -39,6 +39,7 @@
#include <drm/drm_vma_manager.h>
+struct dma_buf_map;
struct drm_gem_object;
/**
@@ -138,7 +139,7 @@ struct drm_gem_object_funcs {
*
* This callback is optional.
*/
- void *(*vmap)(struct drm_gem_object *obj);
+ int (*vmap)(struct drm_gem_object *obj, struct dma_buf_map *map);
/**
* @vunmap:
@@ -148,7 +149,7 @@ struct drm_gem_object_funcs {
*
* This callback is optional.
*/
- void (*vunmap)(struct drm_gem_object *obj, void *vaddr);
+ void (*vunmap)(struct drm_gem_object *obj, struct dma_buf_map *map);
/**
* @mmap:
diff --git a/include/drm/drm_gem_cma_helper.h b/include/drm/drm_gem_cma_helper.h
index a064b0d1c480..caf98b9cf4b4 100644
--- a/include/drm/drm_gem_cma_helper.h
+++ b/include/drm/drm_gem_cma_helper.h
@@ -103,7 +103,7 @@ drm_gem_cma_prime_import_sg_table(struct drm_device *dev,
struct sg_table *sgt);
int drm_gem_cma_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma);
-void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj);
+int drm_gem_cma_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
struct drm_gem_object *
drm_gem_cma_create_object_default_funcs(struct drm_device *dev, size_t size);
diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h
index 5381f0c8cf6f..3449a0353fe0 100644
--- a/include/drm/drm_gem_shmem_helper.h
+++ b/include/drm/drm_gem_shmem_helper.h
@@ -113,8 +113,8 @@ int drm_gem_shmem_get_pages(struct drm_gem_shmem_object *shmem);
void drm_gem_shmem_put_pages(struct drm_gem_shmem_object *shmem);
int drm_gem_shmem_pin(struct drm_gem_object *obj);
void drm_gem_shmem_unpin(struct drm_gem_object *obj);
-void *drm_gem_shmem_vmap(struct drm_gem_object *obj);
-void drm_gem_shmem_vunmap(struct drm_gem_object *obj, void *vaddr);
+int drm_gem_shmem_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
+void drm_gem_shmem_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map);
int drm_gem_shmem_madvise(struct drm_gem_object *obj, int madv);
diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h
index 128f88174d32..c0d28ba0f5c9 100644
--- a/include/drm/drm_gem_vram_helper.h
+++ b/include/drm/drm_gem_vram_helper.h
@@ -10,6 +10,7 @@
#include <drm/ttm/ttm_bo_api.h>
#include <drm/ttm/ttm_bo_driver.h>
+#include <linux/dma-buf-map.h>
#include <linux/kernel.h> /* for container_of() */
struct drm_mode_create_dumb;
@@ -29,9 +30,8 @@ struct vm_area_struct;
/**
* struct drm_gem_vram_object - GEM object backed by VRAM
- * @gem: GEM object
* @bo: TTM buffer object
- * @kmap: Mapping information for @bo
+ * @map: Mapping information for @bo
* @placement: TTM placement information. Supported placements are \
%TTM_PL_VRAM and %TTM_PL_SYSTEM
* @placements: TTM placement information.
@@ -50,15 +50,15 @@ struct vm_area_struct;
*/
struct drm_gem_vram_object {
struct ttm_buffer_object bo;
- struct ttm_bo_kmap_obj kmap;
+ struct dma_buf_map map;
/**
- * @kmap_use_count:
+ * @vmap_use_count:
*
* Reference count on the virtual address.
* The address are un-mapped when the count reaches zero.
*/
- unsigned int kmap_use_count;
+ unsigned int vmap_use_count;
/* Supported placements are %TTM_PL_VRAM and %TTM_PL_SYSTEM */
struct ttm_placement placement;
@@ -97,8 +97,8 @@ u64 drm_gem_vram_mmap_offset(struct drm_gem_vram_object *gbo);
s64 drm_gem_vram_offset(struct drm_gem_vram_object *gbo);
int drm_gem_vram_pin(struct drm_gem_vram_object *gbo, unsigned long pl_flag);
int drm_gem_vram_unpin(struct drm_gem_vram_object *gbo);
-void *drm_gem_vram_vmap(struct drm_gem_vram_object *gbo);
-void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo, void *vaddr);
+int drm_gem_vram_vmap(struct drm_gem_vram_object *gbo, struct dma_buf_map *map);
+void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo, struct dma_buf_map *map);
int drm_gem_vram_fill_create_dumb(struct drm_file *file,
struct drm_device *dev,
--
2.28.0
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