[v2,2/4] drm/vram: Have VRAM MM call GEM VRAM functions directly

Message ID	20190911110910.30698-3-tzimmermann@suse.de (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=K6T8=XG=lists.freedesktop.org=dri-devel-bounces@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8F2092082C From: Thomas Zimmermann <tzimmermann@suse.de> To: daniel@ffwll.ch, kraxel@redhat.com, airlied@linux.ie, corbet@lwn.net, z.liuxinliang@hisilicon.com, zourongrong@gmail.com, kong.kongxinwei@hisilicon.com, puck.chen@hisilicon.com, hdegoede@redhat.com, sam@ravnborg.org, yc_chen@aspeedtech.com Subject: [PATCH v2 2/4] drm/vram: Have VRAM MM call GEM VRAM functions directly Date: Wed, 11 Sep 2019 13:09:08 +0200 Message-Id: <20190911110910.30698-3-tzimmermann@suse.de> In-Reply-To: <20190911110910.30698-1-tzimmermann@suse.de> References: <20190911110910.30698-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: list Cc: virtualization@lists.linux-foundation.org, Thomas Zimmermann <tzimmermann@suse.de>, dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
Series	Merge VRAM MM and GEM VRAM source files \| expand [v2,0/4] Merge VRAM MM and GEM VRAM source files [v2,1/4] drm/vram: Move VRAM memory manager to GEM VRAM implementation [v2,2/4] drm/vram: Have VRAM MM call GEM VRAM functions directly [v2,3/4] drm/vram: Unexport internal functions of VRAM MM [v2,4/4] drm/vram: Unconditonally set BO call-back functions

diff --git a/drivers/gpu/drm/ast/ast_ttm.c b/drivers/gpu/drm/ast/ast_ttm.c index 08ba0a917593..fad34106083a 100644 --- a/drivers/gpu/drm/ast/ast_ttm.c +++ b/drivers/gpu/drm/ast/ast_ttm.c @@ -41,7 +41,7 @@ int ast_mm_init(struct ast_private *ast) vmm = drm_vram_helper_alloc_mm( dev, pci_resource_start(dev->pdev, 0), - ast->vram_size, &drm_gem_vram_mm_funcs); + ast->vram_size); if (IS_ERR(vmm)) { ret = PTR_ERR(vmm); DRM_ERROR("Error initializing VRAM MM; %d\n", ret); diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c index 8f9bb886f7ad..1b74f530b07c 100644 --- a/drivers/gpu/drm/bochs/bochs_mm.c +++ b/drivers/gpu/drm/bochs/bochs_mm.c @@ -11,8 +11,7 @@ int bochs_mm_init(struct bochs_device *bochs) struct drm_vram_mm *vmm; vmm = drm_vram_helper_alloc_mm(bochs->dev, bochs->fb_base, - bochs->fb_size, - &drm_gem_vram_mm_funcs); + bochs->fb_size); return PTR_ERR_OR_ZERO(vmm); } diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index 353f98075579..c87fed608ffa 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -7,7 +7,6 @@ #include <drm/drm_gem_vram_helper.h> #include <drm/drm_mode.h> #include <drm/drm_prime.h> -#include <drm/drm_vram_mm_helper.h> #include <drm/ttm/ttm_page_alloc.h> static const struct drm_gem_object_funcs drm_gem_vram_object_funcs; @@ -464,68 +463,25 @@ static bool drm_is_gem_vram(struct ttm_buffer_object *bo) return (bo->destroy == ttm_buffer_object_destroy); } -/** - * drm_gem_vram_bo_driver_evict_flags() - \ - Implements &struct ttm_bo_driver.evict_flags - * @bo: TTM buffer object. Refers to &struct drm_gem_vram_object.bo - * @pl: TTM placement information. - */ -void drm_gem_vram_bo_driver_evict_flags(struct ttm_buffer_object *bo, - struct ttm_placement *pl) +static void drm_gem_vram_bo_driver_evict_flags(struct drm_gem_vram_object *gbo, + struct ttm_placement *pl) { - struct drm_gem_vram_object *gbo; - - /* TTM may pass BOs that are not GEM VRAM BOs. */ - if (!drm_is_gem_vram(bo)) - return; - - gbo = drm_gem_vram_of_bo(bo); drm_gem_vram_placement(gbo, TTM_PL_FLAG_SYSTEM); *pl = gbo->placement; } -EXPORT_SYMBOL(drm_gem_vram_bo_driver_evict_flags); -/** - * drm_gem_vram_bo_driver_verify_access() - \ - Implements &struct ttm_bo_driver.verify_access - * @bo: TTM buffer object. Refers to &struct drm_gem_vram_object.bo - * @filp: File pointer. - * - * Returns: - * 0 on success, or - * a negative errno code otherwise. - */ -int drm_gem_vram_bo_driver_verify_access(struct ttm_buffer_object *bo, - struct file *filp) +static int drm_gem_vram_bo_driver_verify_access(struct drm_gem_vram_object *gbo, + struct file *filp) { - struct drm_gem_vram_object *gbo = drm_gem_vram_of_bo(bo); - return drm_vma_node_verify_access(&gbo->bo.base.vma_node, filp->private_data); } -EXPORT_SYMBOL(drm_gem_vram_bo_driver_verify_access); -/** - * drm_gem_vram_bo_driver_move_notify() - - * Implements &struct ttm_bo_driver.move_notify - * @bo: TTM buffer object. Refers to &struct drm_gem_vram_object.bo - * @evict: True, if the BO is being evicted from graphics memory; - * false otherwise. - * @new_mem: New memory region, or NULL on destruction - */ -void drm_gem_vram_bo_driver_move_notify(struct ttm_buffer_object *bo, - bool evict, - struct ttm_mem_reg *new_mem) +static void drm_gem_vram_bo_driver_move_notify(struct drm_gem_vram_object *gbo, + bool evict, + struct ttm_mem_reg *new_mem) { - struct drm_gem_vram_object *gbo; - struct ttm_bo_kmap_obj *kmap; - - /* TTM may pass BOs that are not GEM VRAM BOs. */ - if (!drm_is_gem_vram(bo)) - return; - - gbo = drm_gem_vram_of_bo(bo); - kmap = &gbo->kmap; + struct ttm_bo_kmap_obj *kmap = &gbo->kmap; if (WARN_ON_ONCE(gbo->kmap_use_count)) return; @@ -535,21 +491,6 @@ void drm_gem_vram_bo_driver_move_notify(struct ttm_buffer_object *bo, ttm_bo_kunmap(kmap); kmap->virtual = NULL; } -EXPORT_SYMBOL(drm_gem_vram_bo_driver_move_notify); - -/* - * drm_gem_vram_mm_funcs - Functions for &struct drm_vram_mm - * - * Most users of @struct drm_gem_vram_object will also use - * @struct drm_vram_mm. This instance of &struct drm_vram_mm_funcs - * can be used to connect both. - */ -const struct drm_vram_mm_funcs drm_gem_vram_mm_funcs = { - .evict_flags = drm_gem_vram_bo_driver_evict_flags, - .verify_access = drm_gem_vram_bo_driver_verify_access, - .move_notify = drm_gem_vram_bo_driver_move_notify, -}; -EXPORT_SYMBOL(drm_gem_vram_mm_funcs); /* * Helpers for struct drm_gem_object_funcs @@ -815,31 +756,44 @@ static int bo_driver_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, static void bo_driver_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *placement) { - struct drm_vram_mm *vmm = drm_vram_mm_of_bdev(bo->bdev); + struct drm_gem_vram_object *gbo; - if (vmm->funcs && vmm->funcs->evict_flags) - vmm->funcs->evict_flags(bo, placement); + /* TTM may pass BOs that are not GEM VRAM BOs. */ + if (!drm_is_gem_vram(bo)) + return; + + gbo = drm_gem_vram_of_bo(bo); + + drm_gem_vram_bo_driver_evict_flags(gbo, placement); } static int bo_driver_verify_access(struct ttm_buffer_object *bo, struct file *filp) { - struct drm_vram_mm *vmm = drm_vram_mm_of_bdev(bo->bdev); + struct drm_gem_vram_object *gbo; - if (!vmm->funcs || !vmm->funcs->verify_access) - return 0; - return vmm->funcs->verify_access(bo, filp); + /* TTM may pass BOs that are not GEM VRAM BOs. */ + if (!drm_is_gem_vram(bo)) + return -EINVAL; + + gbo = drm_gem_vram_of_bo(bo); + + return drm_gem_vram_bo_driver_verify_access(gbo, filp); } static void bo_driver_move_notify(struct ttm_buffer_object *bo, bool evict, struct ttm_mem_reg *new_mem) { - struct drm_vram_mm *vmm = drm_vram_mm_of_bdev(bo->bdev); + struct drm_gem_vram_object *gbo; - if (!vmm->funcs || !vmm->funcs->move_notify) + /* TTM may pass BOs that are not GEM VRAM BOs. */ + if (!drm_is_gem_vram(bo)) return; - vmm->funcs->move_notify(bo, evict, new_mem); + + gbo = drm_gem_vram_of_bo(bo); + + drm_gem_vram_bo_driver_move_notify(gbo, evict, new_mem); } static int bo_driver_io_mem_reserve(struct ttm_bo_device *bdev, @@ -941,21 +895,18 @@ EXPORT_SYMBOL(drm_vram_mm_debugfs_init); * @dev: the DRM device * @vram_base: the base address of the video memory * @vram_size: the size of the video memory in bytes - * @funcs: callback functions for buffer objects * * Returns: * 0 on success, or * a negative error code otherwise. */ int drm_vram_mm_init(struct drm_vram_mm *vmm, struct drm_device *dev, - uint64_t vram_base, size_t vram_size, - const struct drm_vram_mm_funcs *funcs) + uint64_t vram_base, size_t vram_size) { int ret; vmm->vram_base = vram_base; vmm->vram_size = vram_size; - vmm->funcs = funcs; ret = ttm_bo_device_init(&vmm->bdev, &bo_driver, dev->anon_inode->i_mapping, @@ -1008,15 +959,13 @@ EXPORT_SYMBOL(drm_vram_mm_mmap); * @dev: the DRM device * @vram_base: the base address of the video memory * @vram_size: the size of the video memory in bytes - * @funcs: callback functions for buffer objects * * Returns: * The new instance of &struct drm_vram_mm on success, or * an ERR_PTR()-encoded errno code otherwise. */ struct drm_vram_mm *drm_vram_helper_alloc_mm( - struct drm_device *dev, uint64_t vram_base, size_t vram_size, - const struct drm_vram_mm_funcs *funcs) + struct drm_device *dev, uint64_t vram_base, size_t vram_size) { int ret; @@ -1027,7 +976,7 @@ struct drm_vram_mm *drm_vram_helper_alloc_mm( if (!dev->vram_mm) return ERR_PTR(-ENOMEM); - ret = drm_vram_mm_init(dev->vram_mm, dev, vram_base, vram_size, funcs); + ret = drm_vram_mm_init(dev->vram_mm, dev, vram_base, vram_size); if (ret) goto err_kfree; diff --git a/drivers/gpu/drm/drm_vram_helper_common.c b/drivers/gpu/drm/drm_vram_helper_common.c index e9c9f9a80ba3..2000d9b33fd5 100644 --- a/drivers/gpu/drm/drm_vram_helper_common.c +++ b/drivers/gpu/drm/drm_vram_helper_common.c @@ -7,9 +7,8 @@ * * This library provides &struct drm_gem_vram_object (GEM VRAM), a GEM * buffer object that is backed by video RAM. It can be used for - * framebuffer devices with dedicated memory. The video RAM can be - * managed with &struct drm_vram_mm (VRAM MM). Both data structures are - * supposed to be used together, but can also be used individually. + * framebuffer devices with dedicated memory. The video RAM is managed + * by &struct drm_vram_mm (VRAM MM). * * With the GEM interface userspace applications create, manage and destroy * graphics buffers, such as an on-screen framebuffer. GEM does not provide @@ -50,8 +49,7 @@ * // setup device, vram base and size * // ... * - * ret = drm_vram_helper_alloc_mm(dev, vram_base, vram_size, - * &drm_gem_vram_mm_funcs); + * ret = drm_vram_helper_alloc_mm(dev, vram_base, vram_size); * if (ret) * return ret; * return 0; diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c index 5d52cd748603..21b684eab5c9 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c @@ -28,7 +28,7 @@ int hibmc_mm_init(struct hibmc_drm_private *hibmc) vmm = drm_vram_helper_alloc_mm(dev, pci_resource_start(dev->pdev, 0), - hibmc->fb_size, &drm_gem_vram_mm_funcs); + hibmc->fb_size); if (IS_ERR(vmm)) { ret = PTR_ERR(vmm); DRM_ERROR("Error initializing VRAM MM; %d\n", ret); diff --git a/drivers/gpu/drm/mgag200/mgag200_ttm.c b/drivers/gpu/drm/mgag200/mgag200_ttm.c index 73a6b848601c..69c81ebf3745 100644 --- a/drivers/gpu/drm/mgag200/mgag200_ttm.c +++ b/drivers/gpu/drm/mgag200/mgag200_ttm.c @@ -37,8 +37,7 @@ int mgag200_mm_init(struct mga_device *mdev) struct drm_device *dev = mdev->dev; vmm = drm_vram_helper_alloc_mm(dev, pci_resource_start(dev->pdev, 0), - mdev->mc.vram_size, - &drm_gem_vram_mm_funcs); + mdev->mc.vram_size); if (IS_ERR(vmm)) { ret = PTR_ERR(vmm); DRM_ERROR("Error initializing VRAM MM; %d\n", ret); diff --git a/drivers/gpu/drm/vboxvideo/vbox_ttm.c b/drivers/gpu/drm/vboxvideo/vbox_ttm.c index b82595a9ed0f..976423d0c3cc 100644 --- a/drivers/gpu/drm/vboxvideo/vbox_ttm.c +++ b/drivers/gpu/drm/vboxvideo/vbox_ttm.c @@ -17,8 +17,7 @@ int vbox_mm_init(struct vbox_private *vbox) struct drm_device *dev = &vbox->ddev; vmm = drm_vram_helper_alloc_mm(dev, pci_resource_start(dev->pdev, 0), - vbox->available_vram_size, - &drm_gem_vram_mm_funcs); + vbox->available_vram_size); if (IS_ERR(vmm)) { ret = PTR_ERR(vmm); DRM_ERROR("Error initializing VRAM MM; %d\n", ret); diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h index 1513349a27b1..fd978e0c9542 100644 --- a/include/drm/drm_gem_vram_helper.h +++ b/include/drm/drm_gem_vram_helper.h @@ -109,22 +109,6 @@ int drm_gem_vram_fill_create_dumb(struct drm_file *file, bool interruptible, struct drm_mode_create_dumb *args); -/* - * Helpers for struct ttm_bo_driver - */ - -void drm_gem_vram_bo_driver_evict_flags(struct ttm_buffer_object *bo, - struct ttm_placement *pl); - -void drm_gem_vram_bo_driver_move_notify(struct ttm_buffer_object *bo, - bool evict, - struct ttm_mem_reg *new_mem); - -int drm_gem_vram_bo_driver_verify_access(struct ttm_buffer_object *bo, - struct file *filp); - -extern const struct drm_vram_mm_funcs drm_gem_vram_mm_funcs; - /* * Helpers for struct drm_driver */ @@ -170,8 +154,6 @@ struct drm_vram_mm { size_t vram_size; struct ttm_bo_device bdev; - - const struct drm_vram_mm_funcs *funcs; }; /** @@ -190,8 +172,7 @@ static inline struct drm_vram_mm *drm_vram_mm_of_bdev( int drm_vram_mm_debugfs_init(struct drm_minor *minor); int drm_vram_mm_init(struct drm_vram_mm *vmm, struct drm_device *dev, - uint64_t vram_base, size_t vram_size, - const struct drm_vram_mm_funcs *funcs); + uint64_t vram_base, size_t vram_size); void drm_vram_mm_cleanup(struct drm_vram_mm *vmm); int drm_vram_mm_mmap(struct file *filp, struct vm_area_struct *vma, @@ -202,8 +183,7 @@ int drm_vram_mm_mmap(struct file *filp, struct vm_area_struct *vma, */ struct drm_vram_mm *drm_vram_helper_alloc_mm( - struct drm_device *dev, uint64_t vram_base, size_t vram_size, - const struct drm_vram_mm_funcs *funcs); + struct drm_device *dev, uint64_t vram_base, size_t vram_size); void drm_vram_helper_release_mm(struct drm_device *dev); /* diff --git a/include/drm/drm_vram_mm_helper.h b/include/drm/drm_vram_mm_helper.h deleted file mode 100644 index e3b79e13e106..000000000000 --- a/include/drm/drm_vram_mm_helper.h +++ /dev/null @@ -1,32 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ - -#ifndef DRM_VRAM_MM_HELPER_H -#define DRM_VRAM_MM_HELPER_H - -#include <drm/drm_file.h> -#include <drm/drm_ioctl.h> -#include <drm/ttm/ttm_bo_driver.h> - -struct drm_device; - -/** - * struct drm_vram_mm_funcs - Callback functions for &struct drm_vram_mm - * @evict_flags: Provides an implementation for struct \ - &ttm_bo_driver.evict_flags - * @verify_access: Provides an implementation for \ - struct &ttm_bo_driver.verify_access - * @move_notify: Provides an implementation for - * struct &ttm_bo_driver.move_notify - * - * These callback function integrate VRAM MM with TTM buffer objects. New - * functions can be added if necessary. - */ -struct drm_vram_mm_funcs { - void (*evict_flags)(struct ttm_buffer_object *bo, - struct ttm_placement *placement); - int (*verify_access)(struct ttm_buffer_object *bo, struct file *filp); - void (*move_notify)(struct ttm_buffer_object *bo, bool evict, - struct ttm_mem_reg *new_mem); -}; - -#endif

[v2,2/4] drm/vram: Have VRAM MM call GEM VRAM functions directly

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