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drm/gem: Use struct dma_buf_map in GEM vmap ops and convert GEM backends

Browse source 
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.

v7:
	* init QXL cursor to mapped BO buffer (kernel test robot)
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@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Tested-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201103093015.1063-7-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2020-11-03 10:30:11 +01:00
parent 43676605f8
commit 49a3f51dfe
49 changed files with 359 additions and 316 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
Documentation/gpu/todo.rst
View file

@ -450,6 +450,24 @@ 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@suse.de>, Christian König, Daniel Vetter
Level: Intermediate
Core refactorings
=================

2
drivers/gpu/drm/Kconfig
View file

@ -232,6 +232,7 @@ 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
@ -252,6 +253,7 @@ 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

36
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
View file

@ -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

2
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h
View file

@ -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);

5
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
View file

@ -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,
};
/*

1
drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
View file

@ -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;

27
drivers/gpu/drm/ast/ast_cursor.c
View file

@ -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);

7
drivers/gpu/drm/ast/ast_drv.h
View file

@ -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;

23
drivers/gpu/drm/drm_gem.c
View file

@ -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);
}
/**

10
drivers/gpu/drm/drm_gem_cma_helper.c
View file

@ -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);

48
drivers/gpu/drm/drm_gem_shmem_helper.c
View file

@ -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);

107
drivers/gpu/drm/drm_gem_vram_helper.c
View file

@ -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>
@ -112,8 +113,8 @@ 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);
}
@ -378,29 +379,37 @@ 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;
/*
@ -414,7 +423,9 @@ 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.
@ -423,48 +434,44 @@ 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;
@ -472,7 +479,7 @@ 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);
@ -563,15 +570,13 @@ 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,
@ -837,37 +842,33 @@ 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);
}
/*

2
drivers/gpu/drm/etnaviv/etnaviv_drv.h
View file

@ -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,

11
drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
View file

@ -22,9 +22,16 @@ 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;
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,

6
drivers/gpu/drm/lima/lima_gem.c
View file

@ -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)

11
drivers/gpu/drm/lima/lima_sched.c
View file

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0 OR MIT
/* Copyright 2017-2019 Qiang Yu <yuq825@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;

10
drivers/gpu/drm/mgag200/mgag200_mode.c
View file

@ -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>
@ -1551,15 +1552,18 @@ 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);

1
drivers/gpu/drm/nouveau/Kconfig
View file

@ -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

2
drivers/gpu/drm/nouveau/nouveau_bo.h
View file

@ -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 *

6
drivers/gpu/drm/nouveau/nouveau_gem.c
View file

@ -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

2
drivers/gpu/drm/nouveau/nouveau_gem.h
View file

@ -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

20
drivers/gpu/drm/nouveau/nouveau_prime.c
View file

@ -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)

14
drivers/gpu/drm/panfrost/panfrost_perfcnt.c
View file

@ -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);

15
drivers/gpu/drm/qxl/qxl_display.c
View file

@ -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,
@ -613,9 +617,13 @@ 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;
if (cursor_map.is_iomem) /* TODO: Use mapping abstraction properly */
cursor = (struct qxl_cursor __force *)cursor_map.vaddr_iomem;
else
cursor = (struct qxl_cursor *)cursor_map.vaddr;
cursor->header.unique = 0;
cursor->header.type = SPICE_CURSOR_TYPE_ALPHA;
@ -1133,6 +1141,7 @@ 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 +1158,7 @@ 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 =

14
drivers/gpu/drm/qxl/qxl_draw.c
View file

@ -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,

11
drivers/gpu/drm/qxl/qxl_drv.h
View file

@ -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);

31
drivers/gpu/drm/qxl/qxl_object.c
View file

@ -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,

2
drivers/gpu/drm/qxl/qxl_object.h
View file

@ -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);

12
drivers/gpu/drm/qxl/qxl_prime.c
View file

@ -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);

1
drivers/gpu/drm/radeon/radeon.h
View file

@ -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

7
drivers/gpu/drm/radeon/radeon_gem.c
View file

@ -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,
};
/*

20
drivers/gpu/drm/radeon/radeon_prime.c
View file

@ -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)

38
drivers/gpu/drm/rockchip/rockchip_drm_gem.c
View file

@ -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)
{
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->dma_attrs & DMA_ATTR_NO_KERNEL_MAPPING)
return NULL;
return rk_obj->kvaddr;
}
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)
{
struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
if (rk_obj->pages) {
vunmap(vaddr);
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 -ENOMEM;
dma_buf_map_set_vaddr(map, rk_obj->kvaddr);
return 0;
}
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(map->vaddr);
return;
}

4
drivers/gpu/drm/rockchip/rockchip_drm_gem.h
View file

@ -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);

10
drivers/gpu/drm/tiny/cirrus.c
View file

@ -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:

10
drivers/gpu/drm/tiny/gm12u320.c
View file

@ -250,6 +250,7 @@ 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;
@ -264,11 +265,12 @@ 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(
@ -320,7 +322,7 @@ 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;

8
drivers/gpu/drm/udl/udl_modeset.c
View file

@ -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,

11
drivers/gpu/drm/vboxvideo/vbox_mode.c
View file

@ -9,6 +9,8 @@
* Michael Thayer <michael.thayer@oracle.com,
* Hans de Goede <hdegoede@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;

6
drivers/gpu/drm/vc4/vc4_bo.c
View file

@ -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 *

2
drivers/gpu/drm/vc4/vc4_drv.h
View file

@ -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);

16
drivers/gpu/drm/vgem/vgem_drv.c
View file

@ -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);
return vmap(pages, n_pages, 0, pgprot_writecombine(PAGE_KERNEL));
vaddr = vmap(pages, n_pages, 0, pgprot_writecombine(PAGE_KERNEL));
if (!vaddr)
return -ENOMEM;
dma_buf_map_set_vaddr(map, vaddr);
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);
}

15
drivers/gpu/drm/vkms/vkms_plane.c
View file

@ -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 = {

22
drivers/gpu/drm/vkms/vkms_writeback.c
View file

@ -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);

18
drivers/gpu/drm/xen/xen_drm_front_gem.c
View file

@ -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,

6
drivers/gpu/drm/xen/xen_drm_front_gem.h
View file

@ -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);

5
include/drm/drm_gem.h
View file

@ -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:

2
include/drm/drm_gem_cma_helper.h
View file

@ -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);

4
include/drm/drm_gem_shmem_helper.h
View file

@ -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);

14
include/drm/drm_gem_vram_helper.h
View file

@ -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,