The data structure |struct drm_vram_mm| and its helpers replace hibmc's TTM-based memory manager. It's the same implementation; except for the type names.
v3: * use drm_gem_vram_mm_funcs * convert driver to drm_device-based instance v2: * implement hibmc_mmap() with drm_vram_mm_mmap()
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de --- drivers/gpu/drm/hisilicon/hibmc/Kconfig | 1 + .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 8 +- .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 8 +- drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c | 139 ++---------------- 4 files changed, 13 insertions(+), 143 deletions(-)
diff --git a/drivers/gpu/drm/hisilicon/hibmc/Kconfig b/drivers/gpu/drm/hisilicon/hibmc/Kconfig index 11720303ca40..7c63c2f7d249 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/Kconfig +++ b/drivers/gpu/drm/hisilicon/hibmc/Kconfig @@ -4,6 +4,7 @@ config DRM_HISI_HIBMC select DRM_KMS_HELPER select DRM_TTM select DRM_GEM_VRAM_HELPER + select DRM_VRAM_MM_HELPER
help Choose this option if you have a Hisilicon Hibmc soc chipset. diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c index 7027a1a05768..7243603de261 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c @@ -27,14 +27,8 @@
static const struct file_operations hibmc_fops = { .owner = THIS_MODULE, - .open = drm_open, - .release = drm_release, - .unlocked_ioctl = drm_ioctl, - .compat_ioctl = drm_compat_ioctl, - .mmap = hibmc_mmap, - .poll = drm_poll, - .read = drm_read, .llseek = no_llseek, + DRM_VRAM_MM_FILE_OPERATIONS };
static irqreturn_t hibmc_drm_interrupt(int irq, void *arg) diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h index 6b3430fc5148..3967693ecbdc 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h @@ -24,7 +24,7 @@ #include <drm/drm_fb_helper.h> #include <drm/drm_gem.h> #include <drm/drm_gem_vram_helper.h> -#include <drm/ttm/ttm_bo_driver.h> +#include <drm/drm_vram_mm_helper.h>
struct hibmc_framebuffer { struct drm_framebuffer fb; @@ -49,13 +49,8 @@ struct hibmc_drm_private { struct drm_device *dev; bool mode_config_initialized;
- /* ttm */ - struct ttm_bo_device bdev; - bool initialized; - /* fbdev */ struct hibmc_fbdev *fbdev; - bool mm_inited; };
#define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb) @@ -81,7 +76,6 @@ int hibmc_mm_init(struct hibmc_drm_private *hibmc); void hibmc_mm_fini(struct hibmc_drm_private *hibmc); int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev, struct drm_mode_create_dumb *args); -int hibmc_mmap(struct file *filp, struct vm_area_struct *vma);
extern const struct drm_mode_config_funcs hibmc_mode_funcs;
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c index fbf8eb048ebc..52fba8cb8ddd 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c @@ -17,157 +17,38 @@ */
#include <drm/drm_atomic_helper.h> -#include <drm/ttm/ttm_page_alloc.h>
#include "hibmc_drm_drv.h"
-static inline struct hibmc_drm_private * -hibmc_bdev(struct ttm_bo_device *bd) -{ - return container_of(bd, struct hibmc_drm_private, bdev); -} - -static int -hibmc_bo_init_mem_type(struct ttm_bo_device *bdev, u32 type, - struct ttm_mem_type_manager *man) -{ - switch (type) { - case TTM_PL_SYSTEM: - man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; - man->available_caching = TTM_PL_MASK_CACHING; - man->default_caching = TTM_PL_FLAG_CACHED; - break; - case TTM_PL_VRAM: - man->func = &ttm_bo_manager_func; - man->flags = TTM_MEMTYPE_FLAG_FIXED | - TTM_MEMTYPE_FLAG_MAPPABLE; - man->available_caching = TTM_PL_FLAG_UNCACHED | - TTM_PL_FLAG_WC; - man->default_caching = TTM_PL_FLAG_WC; - break; - default: - DRM_ERROR("unsupported memory type %u\n", type); - return -EINVAL; - } - return 0; -} - -static int hibmc_ttm_io_mem_reserve(struct ttm_bo_device *bdev, - struct ttm_mem_reg *mem) -{ - struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; - struct hibmc_drm_private *hibmc = hibmc_bdev(bdev); - - mem->bus.addr = NULL; - mem->bus.offset = 0; - mem->bus.size = mem->num_pages << PAGE_SHIFT; - mem->bus.base = 0; - mem->bus.is_iomem = false; - if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) - return -EINVAL; - switch (mem->mem_type) { - case TTM_PL_SYSTEM: - /* system memory */ - return 0; - case TTM_PL_VRAM: - mem->bus.offset = mem->start << PAGE_SHIFT; - mem->bus.base = pci_resource_start(hibmc->dev->pdev, 0); - mem->bus.is_iomem = true; - break; - default: - return -EINVAL; - } - return 0; -} - -static void hibmc_ttm_backend_destroy(struct ttm_tt *tt) -{ - ttm_tt_fini(tt); - kfree(tt); -} - -static struct ttm_backend_func hibmc_tt_backend_func = { - .destroy = &hibmc_ttm_backend_destroy, -}; - -static struct ttm_tt *hibmc_ttm_tt_create(struct ttm_buffer_object *bo, - u32 page_flags) -{ - struct ttm_tt *tt; - int ret; - - tt = kzalloc(sizeof(*tt), GFP_KERNEL); - if (!tt) { - DRM_ERROR("failed to allocate ttm_tt\n"); - return NULL; - } - tt->func = &hibmc_tt_backend_func; - ret = ttm_tt_init(tt, bo, page_flags); - if (ret) { - DRM_ERROR("failed to initialize ttm_tt: %d\n", ret); - kfree(tt); - return NULL; - } - return tt; -} - -struct ttm_bo_driver hibmc_bo_driver = { - .ttm_tt_create = hibmc_ttm_tt_create, - .init_mem_type = hibmc_bo_init_mem_type, - .evict_flags = drm_gem_vram_bo_driver_evict_flags, - .move = NULL, - .verify_access = drm_gem_vram_bo_driver_verify_access, - .io_mem_reserve = &hibmc_ttm_io_mem_reserve, - .io_mem_free = NULL, -}; - int hibmc_mm_init(struct hibmc_drm_private *hibmc) { + struct drm_vram_mm *vmm; int ret; struct drm_device *dev = hibmc->dev; - struct ttm_bo_device *bdev = &hibmc->bdev; - - ret = ttm_bo_device_init(&hibmc->bdev, - &hibmc_bo_driver, - dev->anon_inode->i_mapping, - true); - if (ret) { - DRM_ERROR("error initializing bo driver: %d\n", ret); - return ret; - }
- ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, - hibmc->fb_size >> PAGE_SHIFT); - if (ret) { - DRM_ERROR("failed ttm VRAM init: %d\n", ret); + vmm = drm_vram_helper_alloc_mm(dev, + pci_resource_start(dev->pdev, 0), + hibmc->fb_size, &drm_gem_vram_mm_funcs); + if (IS_ERR(vmm)) { + ret = PTR_ERR(vmm); + DRM_ERROR("Error initializing VRAM MM; %d\n", ret); return ret; }
- hibmc->mm_inited = true; return 0; }
void hibmc_mm_fini(struct hibmc_drm_private *hibmc) { - if (!hibmc->mm_inited) + if (!hibmc->dev->vram_mm) return;
- ttm_bo_device_release(&hibmc->bdev); - hibmc->mm_inited = false; -} - -int hibmc_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct drm_file *file_priv = filp->private_data; - struct hibmc_drm_private *hibmc = file_priv->minor->dev->dev_private; - - return ttm_bo_mmap(filp, vma, &hibmc->bdev); + drm_vram_helper_release_mm(hibmc->dev); }
int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel, struct drm_gem_object **obj) { - struct hibmc_drm_private *hibmc = dev->dev_private; struct drm_gem_vram_object *gbo; int ret;
@@ -177,7 +58,7 @@ int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel, if (size == 0) return -EINVAL;
- gbo = drm_gem_vram_create(dev, &hibmc->bdev, size, 0, false); + gbo = drm_gem_vram_create(dev, &dev->vram_mm->bdev, size, 0, false); if (IS_ERR(gbo)) { ret = PTR_ERR(gbo); if (ret != -ERESTARTSYS)