Rename the embedded struct vma_offset_manager, it is named _vma_manager now. ttm_bo_device.vma_manager is a pointer now, pointing to the embedded ttm_bo_device._vma_manager by default.

Add ttm_bo_device_init_with_vma_manager() function which allows to initialize ttm with a different vma manager.

Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- include/drm/ttm/ttm_bo_driver.h | 11 +++++++++-- drivers/gpu/drm/ttm/ttm_bo.c | 29 +++++++++++++++++++++-------- drivers/gpu/drm/ttm/ttm_bo_vm.c | 6 +++--- 3 files changed, 33 insertions(+), 13 deletions(-)

diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index 3f1935c19a66..2f84d6bcd1a7 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -441,7 +441,8 @@ extern struct ttm_bo_global { * * @driver: Pointer to a struct ttm_bo_driver struct setup by the driver. * @man: An array of mem_type_managers. - * @vma_manager: Address space manager + * @vma_manager: Address space manager (pointer) + * @_vma_manager: Address space manager (enbedded) * lru_lock: Spinlock that protects the buffer+device lru lists and * ddestroy lists. * @dev_mapping: A pointer to the struct address_space representing the @@ -464,7 +465,8 @@ struct ttm_bo_device { /* * Protected by internal locks. */ - struct drm_vma_offset_manager vma_manager; + struct drm_vma_offset_manager *vma_manager; + struct drm_vma_offset_manager _vma_manager;

/* * Protected by the global:lru lock. @@ -597,6 +599,11 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev, struct ttm_bo_driver *driver, struct address_space *mapping, bool need_dma32); +int ttm_bo_device_init_with_vma_manager(struct ttm_bo_device *bdev, + struct ttm_bo_driver *driver, + struct address_space *mapping, + struct drm_vma_offset_manager *vma_manager, + bool need_dma32);

/** * ttm_bo_unmap_virtual diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 10a861a1690c..0ed1a1182962 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -672,7 +672,7 @@ static void ttm_bo_release(struct kref *kref) struct ttm_bo_device *bdev = bo->bdev; struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type];

- drm_vma_offset_remove(&bdev->vma_manager, &bo->base.vma_node); + drm_vma_offset_remove(bdev->vma_manager, &bo->base.vma_node); ttm_mem_io_lock(man, false); ttm_mem_io_free_vm(bo); ttm_mem_io_unlock(man); @@ -1353,7 +1353,7 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev, */ if (bo->type == ttm_bo_type_device || bo->type == ttm_bo_type_sg) - ret = drm_vma_offset_add(&bdev->vma_manager, &bo->base.vma_node, + ret = drm_vma_offset_add(bdev->vma_manager, &bo->base.vma_node, bo->mem.num_pages);

/* passed reservation objects should already be locked, @@ -1704,7 +1704,7 @@ int ttm_bo_device_release(struct ttm_bo_device *bdev) pr_debug("Swap list %d was clean\n", i); spin_unlock(&glob->lru_lock);

- drm_vma_offset_manager_destroy(&bdev->vma_manager); + drm_vma_offset_manager_destroy(&bdev->_vma_manager);

if (!ret) ttm_bo_global_release(); @@ -1713,10 +1713,11 @@ int ttm_bo_device_release(struct ttm_bo_device *bdev) } EXPORT_SYMBOL(ttm_bo_device_release);

-int ttm_bo_device_init(struct ttm_bo_device *bdev, - struct ttm_bo_driver *driver, - struct address_space *mapping, - bool need_dma32) +int ttm_bo_device_init_with_vma_manager(struct ttm_bo_device *bdev, + struct ttm_bo_driver *driver, + struct address_space *mapping, + struct drm_vma_offset_manager *vma_manager, + bool need_dma32) { struct ttm_bo_global *glob = &ttm_bo_glob; int ret; @@ -1737,7 +1738,8 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev, if (unlikely(ret != 0)) goto out_no_sys;

- drm_vma_offset_manager_init(&bdev->vma_manager, + bdev->vma_manager = vma_manager; + drm_vma_offset_manager_init(&bdev->_vma_manager, DRM_FILE_PAGE_OFFSET_START, DRM_FILE_PAGE_OFFSET_SIZE); INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); @@ -1754,6 +1756,17 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev, ttm_bo_global_release(); return ret; } +EXPORT_SYMBOL(ttm_bo_device_init_with_vma_manager); + +int ttm_bo_device_init(struct ttm_bo_device *bdev, + struct ttm_bo_driver *driver, + struct address_space *mapping, + bool need_dma32) +{ + return ttm_bo_device_init_with_vma_manager(bdev, driver, mapping, + &bdev->_vma_manager, + need_dma32); +} EXPORT_SYMBOL(ttm_bo_device_init);

/* diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 85f5bcbe0c76..d4eecde8d050 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -409,16 +409,16 @@ static struct ttm_buffer_object *ttm_bo_vm_lookup(struct ttm_bo_device *bdev, struct drm_vma_offset_node *node; struct ttm_buffer_object *bo = NULL;

- drm_vma_offset_lock_lookup(&bdev->vma_manager); + drm_vma_offset_lock_lookup(bdev->vma_manager);

- node = drm_vma_offset_lookup_locked(&bdev->vma_manager, offset, pages); + node = drm_vma_offset_lookup_locked(bdev->vma_manager, offset, pages); if (likely(node)) { bo = container_of(node, struct ttm_buffer_object, base.vma_node); bo = ttm_bo_get_unless_zero(bo); }

- drm_vma_offset_unlock_lookup(&bdev->vma_manager); + drm_vma_offset_unlock_lookup(bdev->vma_manager);

if (!bo) pr_err("Could not find buffer object to map\n");

Now with ttm_buffer_object being a subclass of drm_gem_object we can easily lookup ttm_buffer_object for a given drm_gem_object, which in turm allows to create common helper functions.

This patch starts off with a gem_ttm_bo_device_init() helper function which initializes ttm with the vma offset manager used by gem, to make sure gem and ttm have the same view on vma offsets.

With that in place gem+ttm drivers don't need their private drm_driver.dumb_map_offset implementation any more.

v3: - complete rewrite

Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- include/drm/drm_gem_ttm_helper.h | 30 +++++++++++++++++++++++ drivers/gpu/drm/drm_gem_ttm_helper.c | 36 ++++++++++++++++++++++++++++ Documentation/gpu/drm-mm.rst | 12 ++++++++++ drivers/gpu/drm/Kconfig | 7 ++++++ drivers/gpu/drm/Makefile | 3 +++ 5 files changed, 88 insertions(+) create mode 100644 include/drm/drm_gem_ttm_helper.h create mode 100644 drivers/gpu/drm/drm_gem_ttm_helper.c

diff --git a/include/drm/drm_gem_ttm_helper.h b/include/drm/drm_gem_ttm_helper.h new file mode 100644 index 000000000000..43c9db3583cc --- /dev/null +++ b/include/drm/drm_gem_ttm_helper.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef DRM_GEM_TTM_HELPER_H +#define DRM_GEM_TTM_HELPER_H + +#include <linux/kernel.h> + +#include <drm/drm_gem.h> +#include <drm/drm_device.h> +#include <drm/ttm/ttm_bo_api.h> +#include <drm/ttm/ttm_bo_driver.h> + +/** + * Returns the container of type &struct ttm_buffer_object + * for field base. + * @gem: the GEM object + * Returns: The containing GEM VRAM object + */ +static inline struct ttm_buffer_object *drm_gem_ttm_of_gem( + struct drm_gem_object *gem) +{ + return container_of(gem, struct ttm_buffer_object, base); +} + +int drm_gem_ttm_bo_device_init(struct drm_device *dev, + struct ttm_bo_device *bdev, + struct ttm_bo_driver *driver, + bool need_dma32); + +#endif diff --git a/drivers/gpu/drm/drm_gem_ttm_helper.c b/drivers/gpu/drm/drm_gem_ttm_helper.c new file mode 100644 index 000000000000..0c57e9fd50b9 --- /dev/null +++ b/drivers/gpu/drm/drm_gem_ttm_helper.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <drm/drm_gem_ttm_helper.h> + +/** + * DOC: overview + * + * This library provides helper functions for gem objects backed by + * ttm. + */ + +/** + * drm_gem_ttm_bo_device_init - ttm init for devices which use gem+ttm + * + * @dev: A pointer to a struct drm_device. + * @bdev: A pointer to a struct ttm_bo_device to initialize. + * @driver: A pointer to a struct ttm_bo_driver set up by the caller. + * @need_dma32: Whenever the device is limited to 32bit DMA. + * + * This initializes ttm with dev->vma_offset_manager, so gem and ttm + * fuction are working with the same vma_offset_manager. + * + * Returns: + * !0: Failure. + */ +int drm_gem_ttm_bo_device_init(struct drm_device *dev, + struct ttm_bo_device *bdev, + struct ttm_bo_driver *driver, + bool need_dma32) +{ + return ttm_bo_device_init_with_vma_manager(bdev, driver, + dev->anon_inode->i_mapping, + dev->vma_offset_manager, + need_dma32); +} +EXPORT_SYMBOL(drm_gem_ttm_bo_device_init); diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst index b664f054c259..a70a1d9f30ec 100644 --- a/Documentation/gpu/drm-mm.rst +++ b/Documentation/gpu/drm-mm.rst @@ -412,6 +412,18 @@ VRAM MM Helper Functions Reference .. kernel-doc:: drivers/gpu/drm/drm_vram_mm_helper.c :export:

+GEM TTM Helper Functions Reference +----------------------------------- + +.. kernel-doc:: drivers/gpu/drm/drm_gem_ttm_helper.c + :doc: overview + +.. kernel-doc:: include/drm/drm_gem_ttm_helper.h + :internal: + +.. kernel-doc:: drivers/gpu/drm/drm_gem_ttm_helper.c + :export: + VMA Offset Manager ==================

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index e6f40fb54c9a..f7b25519f95c 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -172,6 +172,13 @@ config DRM_VRAM_HELPER help Helpers for VRAM memory management

+config DRM_TTM_HELPER + tristate + depends on DRM + select DRM_TTM + help + Helpers for ttm-based gem objects + config DRM_GEM_CMA_HELPER bool depends on DRM diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 10f8329a8b71..545c61d6528b 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -37,6 +37,9 @@ drm_vram_helper-y := drm_gem_vram_helper.o \ drm_vram_mm_helper.o obj-$(CONFIG_DRM_VRAM_HELPER) += drm_vram_helper.o

+drm_ttm_helper-y := drm_gem_ttm_helper.o +obj-$(CONFIG_DRM_TTM_HELPER) += drm_ttm_helper.o + drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o drm_dsc.o drm_probe_helper.o \ drm_plane_helper.o drm_dp_mst_topology.o drm_atomic_helper.o \ drm_kms_helper_common.o drm_dp_dual_mode_helper.o \

This allows to drop qxl_mode_dumb_mmap() and qxl_bo_mmap_offset(), the default gem function works just fine.

Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- drivers/gpu/drm/qxl/qxl_drv.h | 4 +--- drivers/gpu/drm/qxl/qxl_object.h | 5 ----- drivers/gpu/drm/qxl/qxl_drv.c | 1 - drivers/gpu/drm/qxl/qxl_dumb.c | 17 ----------------- drivers/gpu/drm/qxl/qxl_ioctl.c | 5 +++-- drivers/gpu/drm/qxl/qxl_ttm.c | 8 ++++---- drivers/gpu/drm/qxl/Kconfig | 1 + 7 files changed, 9 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h index 9e034c5fa87d..82efbe76062a 100644 --- a/drivers/gpu/drm/qxl/qxl_drv.h +++ b/drivers/gpu/drm/qxl/qxl_drv.h @@ -38,6 +38,7 @@ #include <drm/drm_crtc.h> #include <drm/drm_encoder.h> #include <drm/drm_fb_helper.h> +#include <drm/drm_gem_ttm_helper.h> #include <drm/drm_ioctl.h> #include <drm/drm_gem.h> #include <drm/qxl_drm.h> @@ -347,9 +348,6 @@ int qxl_bo_kmap(struct qxl_bo *bo, void **ptr); int qxl_mode_dumb_create(struct drm_file *file_priv, struct drm_device *dev, struct drm_mode_create_dumb *args); -int qxl_mode_dumb_mmap(struct drm_file *filp, - struct drm_device *dev, - uint32_t handle, uint64_t *offset_p);

/* qxl ttm */ int qxl_ttm_init(struct qxl_device *qdev); diff --git a/drivers/gpu/drm/qxl/qxl_object.h b/drivers/gpu/drm/qxl/qxl_object.h index 8ae54ba7857c..1f0316ebcfd0 100644 --- a/drivers/gpu/drm/qxl/qxl_object.h +++ b/drivers/gpu/drm/qxl/qxl_object.h @@ -58,11 +58,6 @@ static inline unsigned long qxl_bo_size(struct qxl_bo *bo) return bo->tbo.num_pages << PAGE_SHIFT; }

-static inline u64 qxl_bo_mmap_offset(struct qxl_bo *bo) -{ - return drm_vma_node_offset_addr(&bo->tbo.base.vma_node); -} - static inline int qxl_bo_wait(struct qxl_bo *bo, u32 *mem_type, bool no_wait) { diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c index c1802e01d9f6..12cf85a06bed 100644 --- a/drivers/gpu/drm/qxl/qxl_drv.c +++ b/drivers/gpu/drm/qxl/qxl_drv.c @@ -252,7 +252,6 @@ static struct drm_driver qxl_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,

.dumb_create = qxl_mode_dumb_create, - .dumb_map_offset = qxl_mode_dumb_mmap, #if defined(CONFIG_DEBUG_FS) .debugfs_init = qxl_debugfs_init, #endif diff --git a/drivers/gpu/drm/qxl/qxl_dumb.c b/drivers/gpu/drm/qxl/qxl_dumb.c index 272d19b677d8..bd3b16a701a6 100644 --- a/drivers/gpu/drm/qxl/qxl_dumb.c +++ b/drivers/gpu/drm/qxl/qxl_dumb.c @@ -69,20 +69,3 @@ int qxl_mode_dumb_create(struct drm_file *file_priv, args->handle = handle; return 0; } - -int qxl_mode_dumb_mmap(struct drm_file *file_priv, - struct drm_device *dev, - uint32_t handle, uint64_t *offset_p) -{ - struct drm_gem_object *gobj; - struct qxl_bo *qobj; - - BUG_ON(!offset_p); - gobj = drm_gem_object_lookup(file_priv, handle); - if (gobj == NULL) - return -ENOENT; - qobj = gem_to_qxl_bo(gobj); - *offset_p = qxl_bo_mmap_offset(qobj); - drm_gem_object_put_unlocked(gobj); - return 0; -} diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c index 8117a45b3610..c8d9ea552532 100644 --- a/drivers/gpu/drm/qxl/qxl_ioctl.c +++ b/drivers/gpu/drm/qxl/qxl_ioctl.c @@ -67,8 +67,9 @@ static int qxl_map_ioctl(struct drm_device *dev, void *data, struct qxl_device *qdev = dev->dev_private; struct drm_qxl_map *qxl_map = data;

- return qxl_mode_dumb_mmap(file_priv, &qdev->ddev, qxl_map->handle, - &qxl_map->offset); + return drm_gem_dumb_map_offset(file_priv, &qdev->ddev, + qxl_map->handle, + &qxl_map->offset); }

struct qxl_reloc_info { diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c index 9b24514c75aa..3a24145dd516 100644 --- a/drivers/gpu/drm/qxl/qxl_ttm.c +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -322,10 +322,10 @@ int qxl_ttm_init(struct qxl_device *qdev) int num_io_pages; /* != rom->num_io_pages, we include surface0 */

/* No others user of address space so set it to 0 */ - r = ttm_bo_device_init(&qdev->mman.bdev, - &qxl_bo_driver, - qdev->ddev.anon_inode->i_mapping, - false); + r = drm_gem_ttm_bo_device_init(&qdev->ddev, + &qdev->mman.bdev, + &qxl_bo_driver, + false); if (r) { DRM_ERROR("failed initializing buffer object driver(%d).\n", r); return r; diff --git a/drivers/gpu/drm/qxl/Kconfig b/drivers/gpu/drm/qxl/Kconfig index d0d691b31f4a..bfe90c7d17b2 100644 --- a/drivers/gpu/drm/qxl/Kconfig +++ b/drivers/gpu/drm/qxl/Kconfig @@ -3,6 +3,7 @@ config DRM_QXL tristate "QXL virtual GPU" depends on DRM && PCI && MMU select DRM_KMS_HELPER + select DRM_TTM_HELPER select DRM_TTM select CRC32 help

Switch gem shmem helper from gem_driver->fops->mmap to drm_gem_object_funcs->mmap.

Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- include/drm/drm_gem_shmem_helper.h | 4 ++-- drivers/gpu/drm/drm_gem_shmem_helper.c | 18 +++++++----------- drivers/gpu/drm/panfrost/panfrost_gem.c | 1 + drivers/gpu/drm/v3d/v3d_bo.c | 1 + 4 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h index 038b6d313447..0f7b77cdc26b 100644 --- a/include/drm/drm_gem_shmem_helper.h +++ b/include/drm/drm_gem_shmem_helper.h @@ -108,7 +108,7 @@ struct drm_gem_shmem_object { .poll = drm_poll,\ .read = drm_read,\ .llseek = noop_llseek,\ - .mmap = drm_gem_shmem_mmap, \ + .mmap = drm_gem_mmap, \ }

struct drm_gem_shmem_object *drm_gem_shmem_create(struct drm_device *dev, size_t size); @@ -128,7 +128,7 @@ drm_gem_shmem_create_with_handle(struct drm_file *file_priv, int drm_gem_shmem_dumb_create(struct drm_file *file, struct drm_device *dev, struct drm_mode_create_dumb *args);

-int drm_gem_shmem_mmap(struct file *filp, struct vm_area_struct *vma); +int drm_gem_shmem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);

extern const struct vm_operations_struct drm_gem_shmem_vm_ops;

diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index 2f64667ac805..2e5780520587 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -32,6 +32,7 @@ static const struct drm_gem_object_funcs drm_gem_shmem_funcs = { .get_sg_table = drm_gem_shmem_get_sg_table, .vmap = drm_gem_shmem_vmap, .vunmap = drm_gem_shmem_vunmap, + .mmap = drm_gem_shmem_mmap, .vm_ops = &drm_gem_shmem_vm_ops, };

@@ -448,30 +449,25 @@ EXPORT_SYMBOL_GPL(drm_gem_shmem_vm_ops);

/** * drm_gem_shmem_mmap - Memory-map a shmem GEM object - * @filp: File object + * @obj: gem object * @vma: VMA for the area to be mapped * * This function implements an augmented version of the GEM DRM file mmap * operation for shmem objects. Drivers which employ the shmem helpers should - * use this function as their &file_operations.mmap handler in the DRM device file's - * file_operations structure. + * use this function as their &drm_gem_object_funcs.mmap handler. * - * Instead of directly referencing this function, drivers should use the - * DEFINE_DRM_GEM_SHMEM_FOPS() macro. + * Instead of directly referencing this function, drivers can use + * drm_gem_shmem_funcs. * * Returns: * 0 on success or a negative error code on failure. */ -int drm_gem_shmem_mmap(struct file *filp, struct vm_area_struct *vma) +int drm_gem_shmem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) { struct drm_gem_shmem_object *shmem; int ret;

- ret = drm_gem_mmap(filp, vma); - if (ret) - return ret; - - shmem = to_drm_gem_shmem_obj(vma->vm_private_data); + shmem = to_drm_gem_shmem_obj(obj);

ret = drm_gem_shmem_get_pages(shmem); if (ret) { diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c index 543ab1b81bd5..7c2314a88cd4 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gem.c +++ b/drivers/gpu/drm/panfrost/panfrost_gem.c @@ -37,6 +37,7 @@ static const struct drm_gem_object_funcs panfrost_gem_funcs = { .get_sg_table = drm_gem_shmem_get_sg_table, .vmap = drm_gem_shmem_vmap, .vunmap = drm_gem_shmem_vunmap, + .mmap = drm_gem_shmem_mmap, .vm_ops = &drm_gem_shmem_vm_ops, };

diff --git a/drivers/gpu/drm/v3d/v3d_bo.c b/drivers/gpu/drm/v3d/v3d_bo.c index a22b75a3a533..c01e2b952451 100644 --- a/drivers/gpu/drm/v3d/v3d_bo.c +++ b/drivers/gpu/drm/v3d/v3d_bo.c @@ -58,6 +58,7 @@ static const struct drm_gem_object_funcs v3d_gem_funcs = { .get_sg_table = drm_gem_shmem_get_sg_table, .vmap = drm_gem_shmem_vmap, .vunmap = drm_gem_shmem_vunmap, + .mmap = drm_gem_shmem_mmap, .vm_ops = &drm_gem_shmem_vm_ops, };

DEFINE_DRM_GEM_SHMEM_FOPS is identical to DEFINE_DRM_GEM_FOPS now, drop it.

Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- include/drm/drm_gem_shmem_helper.h | 26 ------------------------- drivers/gpu/drm/cirrus/cirrus.c | 2 +- drivers/gpu/drm/panfrost/panfrost_drv.c | 2 +- drivers/gpu/drm/v3d/v3d_drv.c | 2 +- 4 files changed, 3 insertions(+), 29 deletions(-)

diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h index 0f7b77cdc26b..813240dcfe17 100644 --- a/include/drm/drm_gem_shmem_helper.h +++ b/include/drm/drm_gem_shmem_helper.h @@ -85,32 +85,6 @@ struct drm_gem_shmem_object { #define to_drm_gem_shmem_obj(obj) \ container_of(obj, struct drm_gem_shmem_object, base)

-/** - * DEFINE_DRM_GEM_SHMEM_FOPS() - Macro to generate file operations for shmem drivers - * @name: name for the generated structure - * - * This macro autogenerates a suitable &struct file_operations for shmem based - * drivers, which can be assigned to &drm_driver.fops. Note that this structure - * cannot be shared between drivers, because it contains a reference to the - * current module using THIS_MODULE. - * - * Note that the declaration is already marked as static - if you need a - * non-static version of this you're probably doing it wrong and will break the - * THIS_MODULE reference by accident. - */ -#define DEFINE_DRM_GEM_SHMEM_FOPS(name) \ - static const struct file_operations name = {\ - .owner = THIS_MODULE,\ - .open = drm_open,\ - .release = drm_release,\ - .unlocked_ioctl = drm_ioctl,\ - .compat_ioctl = drm_compat_ioctl,\ - .poll = drm_poll,\ - .read = drm_read,\ - .llseek = noop_llseek,\ - .mmap = drm_gem_mmap, \ - } - struct drm_gem_shmem_object *drm_gem_shmem_create(struct drm_device *dev, size_t size); void drm_gem_shmem_free_object(struct drm_gem_object *obj);

diff --git a/drivers/gpu/drm/cirrus/cirrus.c b/drivers/gpu/drm/cirrus/cirrus.c index 36a69aec8a4b..9438af468331 100644 --- a/drivers/gpu/drm/cirrus/cirrus.c +++ b/drivers/gpu/drm/cirrus/cirrus.c @@ -510,7 +510,7 @@ static void cirrus_mode_config_init(struct cirrus_device *cirrus)

/* ------------------------------------------------------------------ */

-DEFINE_DRM_GEM_SHMEM_FOPS(cirrus_fops); +DEFINE_DRM_GEM_FOPS(cirrus_fops);

static struct drm_driver cirrus_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c index b187daa4da85..1c07e1c3386e 100644 --- a/drivers/gpu/drm/panfrost/panfrost_drv.c +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -386,7 +386,7 @@ static const struct drm_ioctl_desc panfrost_drm_driver_ioctls[] = { PANFROST_IOCTL(PERFCNT_DUMP, perfcnt_dump, DRM_RENDER_ALLOW), };

-DEFINE_DRM_GEM_SHMEM_FOPS(panfrost_drm_driver_fops); +DEFINE_DRM_GEM_FOPS(panfrost_drm_driver_fops);

static struct drm_driver panfrost_drm_driver = { .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ, diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c index 3506ae2723ae..03e4fbe1b92b 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.c +++ b/drivers/gpu/drm/v3d/v3d_drv.c @@ -169,7 +169,7 @@ v3d_postclose(struct drm_device *dev, struct drm_file *file) kfree(v3d_priv); }

-DEFINE_DRM_GEM_SHMEM_FOPS(v3d_drm_fops); +DEFINE_DRM_GEM_FOPS(v3d_drm_fops);

/* DRM_AUTH is required on SUBMIT_CL for now, while we don't have GMP * protection between clients. Note that render nodes would be be

Factor out ttm vma setup to a new function.

Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- include/drm/ttm/ttm_bo_api.h | 8 ++++++ drivers/gpu/drm/ttm/ttm_bo_vm.c | 47 ++++++++++++++++++--------------- 2 files changed, 33 insertions(+), 22 deletions(-)

diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 65ef5376de59..2c5fab0f3ed4 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -734,6 +734,14 @@ int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo); int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma, struct ttm_bo_device *bdev);

+/** + * ttm_bo_mmap_vma_setup - initialize vma for ttm bo mmap + * + * @bo: The buffer object. + * @vma: vma as input from the mmap method. + */ +void ttm_bo_mmap_vma_setup(struct ttm_buffer_object *bo, struct vm_area_struct *vma); + void *ttm_kmap_atomic_prot(struct page *page, pgprot_t prot);

void ttm_kunmap_atomic_prot(void *addr, pgprot_t prot); diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index d4eecde8d050..903563a7496a 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -426,6 +426,29 @@ static struct ttm_buffer_object *ttm_bo_vm_lookup(struct ttm_bo_device *bdev, return bo; }

+void ttm_bo_mmap_vma_setup(struct ttm_buffer_object *bo, struct vm_area_struct *vma) +{ + vma->vm_ops = &ttm_bo_vm_ops; + + /* + * Note: We're transferring the bo reference to + * vma->vm_private_data here. + */ + + vma->vm_private_data = bo; + + /* + * We'd like to use VM_PFNMAP on shared mappings, where + * (vma->vm_flags & VM_SHARED) != 0, for performance reasons, + * but for some reason VM_PFNMAP + x86 PAT + write-combine is very + * bad for performance. Until that has been sorted out, use + * VM_MIXEDMAP on all mappings. See freedesktop.org bug #75719 + */ + vma->vm_flags |= VM_MIXEDMAP; + vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; +} +EXPORT_SYMBOL(ttm_bo_mmap_vma_setup); + int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma, struct ttm_bo_device *bdev) { @@ -449,24 +472,7 @@ int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma, if (unlikely(ret != 0)) goto out_unref;

- vma->vm_ops = &ttm_bo_vm_ops; - - /* - * Note: We're transferring the bo reference to - * vma->vm_private_data here. - */ - - vma->vm_private_data = bo; - - /* - * We'd like to use VM_PFNMAP on shared mappings, where - * (vma->vm_flags & VM_SHARED) != 0, for performance reasons, - * but for some reason VM_PFNMAP + x86 PAT + write-combine is very - * bad for performance. Until that has been sorted out, use - * VM_MIXEDMAP on all mappings. See freedesktop.org bug #75719 - */ - vma->vm_flags |= VM_MIXEDMAP; - vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; + ttm_bo_mmap_vma_setup(bo, vma); return 0; out_unref: ttm_bo_put(bo); @@ -481,10 +487,7 @@ int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo)

ttm_bo_get(bo);

- vma->vm_ops = &ttm_bo_vm_ops; - vma->vm_private_data = bo; - vma->vm_flags |= VM_MIXEDMAP; - vma->vm_flags |= VM_IO | VM_DONTEXPAND; + ttm_bo_mmap_vma_setup(bo, vma); return 0; } EXPORT_SYMBOL(ttm_fbdev_mmap);

... using the new drm_gem_ttm_mmap() helper function.

Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- include/drm/drm_vram_mm_helper.h | 9 +-------- drivers/gpu/drm/drm_gem_vram_helper.c | 4 +++- drivers/gpu/drm/drm_vram_mm_helper.c | 27 --------------------------- 3 files changed, 4 insertions(+), 36 deletions(-)

diff --git a/include/drm/drm_vram_mm_helper.h b/include/drm/drm_vram_mm_helper.h index 2aacfb1ccfae..ff328bdaa638 100644 --- a/include/drm/drm_vram_mm_helper.h +++ b/include/drm/drm_vram_mm_helper.h @@ -77,13 +77,6 @@ struct drm_vram_mm *drm_vram_helper_alloc_mm( const struct drm_vram_mm_funcs *funcs); void drm_vram_helper_release_mm(struct drm_device *dev);

-/* - * Helpers for &struct file_operations - */ - -int drm_vram_mm_file_operations_mmap( - struct file *filp, struct vm_area_struct *vma); - /** * define DRM_VRAM_MM_FILE_OPERATIONS - default callback functions for \ &struct file_operations @@ -97,7 +90,7 @@ int drm_vram_mm_file_operations_mmap( .poll = drm_poll, \ .unlocked_ioctl = drm_ioctl, \ .compat_ioctl = drm_compat_ioctl, \ - .mmap = drm_vram_mm_file_operations_mmap, \ + .mmap = drm_gem_mmap, \ .open = drm_open, \ .release = drm_release \

diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index b78865055990..ed1625f6a296 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 <drm/drm_gem_ttm_helper.h> #include <drm/drm_gem_vram_helper.h> #include <drm/drm_device.h> #include <drm/drm_mode.h> @@ -585,5 +586,6 @@ static const struct drm_gem_object_funcs drm_gem_vram_object_funcs = { .pin = drm_gem_vram_object_pin, .unpin = drm_gem_vram_object_unpin, .vmap = drm_gem_vram_object_vmap, - .vunmap = drm_gem_vram_object_vunmap + .vunmap = drm_gem_vram_object_vunmap, + .mmap = drm_gem_ttm_mmap, }; diff --git a/drivers/gpu/drm/drm_vram_mm_helper.c b/drivers/gpu/drm/drm_vram_mm_helper.c index a693f9ce356c..8f6e26b3da69 100644 --- a/drivers/gpu/drm/drm_vram_mm_helper.c +++ b/drivers/gpu/drm/drm_vram_mm_helper.c @@ -268,30 +268,3 @@ void drm_vram_helper_release_mm(struct drm_device *dev) dev->vram_mm = NULL; } EXPORT_SYMBOL(drm_vram_helper_release_mm); - -/* - * Helpers for &struct file_operations - */ - -/** - * drm_vram_mm_file_operations_mmap() - \ - Implements &struct file_operations.mmap() - * @filp: the mapping's file structure - * @vma: the mapping's memory area - * - * Returns: - * 0 on success, or - * a negative error code otherwise. - */ -int drm_vram_mm_file_operations_mmap( - struct file *filp, struct vm_area_struct *vma) -{ - struct drm_file *file_priv = filp->private_data; - struct drm_device *dev = file_priv->minor->dev; - - if (WARN_ONCE(!dev->vram_mm, "VRAM MM not initialized")) - return -EINVAL; - - return drm_vram_mm_mmap(filp, vma, dev->vram_mm); -} -EXPORT_SYMBOL(drm_vram_mm_file_operations_mmap);

Not needed any more because we don't have vram specific functions any more. DEFINE_DRM_GEM_FOPS() can be used instead.

Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- include/drm/drm_vram_mm_helper.h | 17 ----------------- drivers/gpu/drm/ast/ast_drv.c | 5 +---- drivers/gpu/drm/bochs/bochs_drv.c | 5 +---- drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 5 +---- drivers/gpu/drm/mgag200/mgag200_drv.c | 5 +---- drivers/gpu/drm/vboxvideo/vbox_drv.c | 5 +---- 6 files changed, 5 insertions(+), 37 deletions(-)

diff --git a/include/drm/drm_vram_mm_helper.h b/include/drm/drm_vram_mm_helper.h index f272adc8ad37..59a8a7657a5b 100644 --- a/include/drm/drm_vram_mm_helper.h +++ b/include/drm/drm_vram_mm_helper.h @@ -74,21 +74,4 @@ struct drm_vram_mm *drm_vram_helper_alloc_mm( const struct drm_vram_mm_funcs *funcs); void drm_vram_helper_release_mm(struct drm_device *dev);

-/** - * define DRM_VRAM_MM_FILE_OPERATIONS - default callback functions for \ - &struct file_operations - * - * Drivers that use VRAM MM can use this macro to initialize - * &struct file_operations with default functions. - */ -#define DRM_VRAM_MM_FILE_OPERATIONS \ - .llseek = no_llseek, \ - .read = drm_read, \ - .poll = drm_poll, \ - .unlocked_ioctl = drm_ioctl, \ - .compat_ioctl = drm_compat_ioctl, \ - .mmap = drm_gem_mmap, \ - .open = drm_open, \ - .release = drm_release \ - #endif diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c index 6ed6ff49efc0..358d2a34b4e6 100644 --- a/drivers/gpu/drm/ast/ast_drv.c +++ b/drivers/gpu/drm/ast/ast_drv.c @@ -201,10 +201,7 @@ static struct pci_driver ast_pci_driver = { .driver.pm = &ast_pm_ops, };

-static const struct file_operations ast_fops = { - .owner = THIS_MODULE, - DRM_VRAM_MM_FILE_OPERATIONS -}; +DEFINE_DRM_GEM_FOPS(ast_fops);

static struct drm_driver driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM, diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c index 770e1625d05e..d7e09af0832a 100644 --- a/drivers/gpu/drm/bochs/bochs_drv.c +++ b/drivers/gpu/drm/bochs/bochs_drv.c @@ -58,10 +58,7 @@ static int bochs_load(struct drm_device *dev) return ret; }

-static const struct file_operations bochs_fops = { - .owner = THIS_MODULE, - DRM_VRAM_MM_FILE_OPERATIONS -}; +DEFINE_DRM_GEM_FOPS(bochs_fops);

static struct drm_driver bochs_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c index 6386c67e086b..b3b1275ebf51 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c @@ -27,10 +27,7 @@ #include "hibmc_drm_drv.h" #include "hibmc_drm_regs.h"

-static const struct file_operations hibmc_fops = { - .owner = THIS_MODULE, - DRM_VRAM_MM_FILE_OPERATIONS -}; +DEFINE_DRM_GEM_FOPS(hibmc_fops);

static irqreturn_t hibmc_drm_interrupt(int irq, void *arg) { diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c index afd9119b6cf1..684a324990d9 100644 --- a/drivers/gpu/drm/mgag200/mgag200_drv.c +++ b/drivers/gpu/drm/mgag200/mgag200_drv.c @@ -58,10 +58,7 @@ static void mga_pci_remove(struct pci_dev *pdev) drm_put_dev(dev); }

-static const struct file_operations mgag200_driver_fops = { - .owner = THIS_MODULE, - DRM_VRAM_MM_FILE_OPERATIONS -}; +DEFINE_DRM_GEM_FOPS(mgag200_driver_fops);

static struct drm_driver driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET, diff --git a/drivers/gpu/drm/vboxvideo/vbox_drv.c b/drivers/gpu/drm/vboxvideo/vbox_drv.c index 6189ea89bb71..f70360081ef1 100644 --- a/drivers/gpu/drm/vboxvideo/vbox_drv.c +++ b/drivers/gpu/drm/vboxvideo/vbox_drv.c @@ -189,10 +189,7 @@ static struct pci_driver vbox_pci_driver = { #endif };

-static const struct file_operations vbox_fops = { - .owner = THIS_MODULE, - DRM_VRAM_MM_FILE_OPERATIONS -}; +DEFINE_DRM_GEM_FOPS(vbox_fops);

static struct drm_driver driver = { .driver_features =

Not sure what this hook is supposed to do. vmf->vma->vm_private_data should never be NULL, so the extra check in qxl_ttm_fault should have no effect.

Drop it.

Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- drivers/gpu/drm/qxl/qxl_ttm.c | 27 +-------------------------- 1 file changed, 1 insertion(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c index 3a24145dd516..41edbde0e37e 100644 --- a/drivers/gpu/drm/qxl/qxl_ttm.c +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -48,24 +48,8 @@ static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev) return qdev; }

-static struct vm_operations_struct qxl_ttm_vm_ops; -static const struct vm_operations_struct *ttm_vm_ops; - -static vm_fault_t qxl_ttm_fault(struct vm_fault *vmf) -{ - struct ttm_buffer_object *bo; - vm_fault_t ret; - - bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data; - if (bo == NULL) - return VM_FAULT_NOPAGE; - ret = ttm_vm_ops->fault(vmf); - return ret; -} - int qxl_mmap(struct file *filp, struct vm_area_struct *vma) { - int r; struct drm_file *file_priv = filp->private_data; struct qxl_device *qdev = file_priv->minor->dev->dev_private;

@@ -77,16 +61,7 @@ int qxl_mmap(struct file *filp, struct vm_area_struct *vma) DRM_DEBUG_DRIVER("filp->private_data = 0x%p, vma->vm_pgoff = %lx\n", filp->private_data, vma->vm_pgoff);

- r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev); - if (unlikely(r != 0)) - return r; - if (unlikely(ttm_vm_ops == NULL)) { - ttm_vm_ops = vma->vm_ops; - qxl_ttm_vm_ops = *ttm_vm_ops; - qxl_ttm_vm_ops.fault = &qxl_ttm_fault; - } - vma->vm_ops = &qxl_ttm_vm_ops; - return 0; + return ttm_bo_mmap(filp, vma, &qdev->mman.bdev); }

static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)

Not needed any more.

Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- drivers/gpu/drm/qxl/qxl_ttm.c | 9 --------- 1 file changed, 9 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c index dbaed0e67c21..d1d8fe6e1e93 100644 --- a/drivers/gpu/drm/qxl/qxl_ttm.c +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -110,14 +110,6 @@ static void qxl_evict_flags(struct ttm_buffer_object *bo, *placement = qbo->placement; }

-static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp) -{ - struct qxl_bo *qbo = to_qxl_bo(bo); - - return drm_vma_node_verify_access(&qbo->tbo.base.vma_node, - filp->private_data); -} - static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) { @@ -269,7 +261,6 @@ static struct ttm_bo_driver qxl_bo_driver = { .eviction_valuable = ttm_bo_eviction_valuable, .evict_flags = &qxl_evict_flags, .move = &qxl_bo_move, - .verify_access = &qxl_verify_access, .io_mem_reserve = &qxl_ttm_io_mem_reserve, .io_mem_free = &qxl_ttm_io_mem_free, .move_notify = &qxl_bo_move_notify,