From 8e4ff9b569572880b65d58976bb701a40ef1d9c4 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sun, 2 Feb 2020 17:16:32 +0000 Subject: [PATCH] drm: Remove the dma_alloc_coherent wrapper for internal usage Internally for "consistent" maps, we create a temporary struct drm_dma_handle in order to use our own dma_alloc_coherent wrapper then destroy the temporary wrap. Simplify our logic by removing the temporary wrapper! Signed-off-by: Chris Wilson Reviewed-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20200202171635.4039044-2-chris@chris-wilson.co.uk --- drivers/gpu/drm/drm_bufs.c | 20 +++++++++----------- drivers/gpu/drm/drm_pci.c | 15 ++------------- drivers/gpu/drm/drm_vm.c | 10 ++++------ include/drm/drm_legacy.h | 6 ------ 4 files changed, 15 insertions(+), 36 deletions(-) diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c index 8ce9d73fab4f..19297e58b232 100644 --- a/drivers/gpu/drm/drm_bufs.c +++ b/drivers/gpu/drm/drm_bufs.c @@ -149,7 +149,6 @@ static int drm_addmap_core(struct drm_device *dev, resource_size_t offset, { struct drm_local_map *map; struct drm_map_list *list; - drm_dma_handle_t *dmah; unsigned long user_token; int ret; @@ -324,14 +323,14 @@ static int drm_addmap_core(struct drm_device *dev, resource_size_t offset, * As we're limiting the address to 2^32-1 (or less), * casting it down to 32 bits is no problem, but we * need to point to a 64bit variable first. */ - dmah = drm_pci_alloc(dev, map->size, map->size); - if (!dmah) { + map->handle = dma_alloc_coherent(&dev->pdev->dev, + map->size, + &map->offset, + GFP_KERNEL); + if (!map->handle) { kfree(map); return -ENOMEM; } - map->handle = dmah->vaddr; - map->offset = (unsigned long)dmah->busaddr; - kfree(dmah); break; default: kfree(map); @@ -513,7 +512,6 @@ int drm_legacy_getmap_ioctl(struct drm_device *dev, void *data, int drm_legacy_rmmap_locked(struct drm_device *dev, struct drm_local_map *map) { struct drm_map_list *r_list = NULL, *list_t; - drm_dma_handle_t dmah; int found = 0; struct drm_master *master; @@ -554,10 +552,10 @@ int drm_legacy_rmmap_locked(struct drm_device *dev, struct drm_local_map *map) case _DRM_SCATTER_GATHER: break; case _DRM_CONSISTENT: - dmah.vaddr = map->handle; - dmah.busaddr = map->offset; - dmah.size = map->size; - __drm_legacy_pci_free(dev, &dmah); + dma_free_coherent(&dev->pdev->dev, + map->size, + map->handle, + map->offset); break; } kfree(map); diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c index d16dac4325f9..c6bb98729a26 100644 --- a/drivers/gpu/drm/drm_pci.c +++ b/drivers/gpu/drm/drm_pci.c @@ -78,18 +78,6 @@ drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t ali EXPORT_SYMBOL(drm_pci_alloc); -/* - * Free a PCI consistent memory block without freeing its descriptor. - * - * This function is for internal use in the Linux-specific DRM core code. - */ -void __drm_legacy_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah) -{ - if (dmah->vaddr) - dma_free_coherent(&dev->pdev->dev, dmah->size, dmah->vaddr, - dmah->busaddr); -} - /** * drm_pci_free - Free a PCI consistent memory block * @dev: DRM device @@ -100,7 +88,8 @@ void __drm_legacy_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah) */ void drm_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah) { - __drm_legacy_pci_free(dev, dmah); + dma_free_coherent(&dev->pdev->dev, dmah->size, dmah->vaddr, + dmah->busaddr); kfree(dmah); } diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c index 52e87e4869a5..64619fe90046 100644 --- a/drivers/gpu/drm/drm_vm.c +++ b/drivers/gpu/drm/drm_vm.c @@ -269,8 +269,6 @@ static void drm_vm_shm_close(struct vm_area_struct *vma) } if (!found_maps) { - drm_dma_handle_t dmah; - switch (map->type) { case _DRM_REGISTERS: case _DRM_FRAME_BUFFER: @@ -284,10 +282,10 @@ static void drm_vm_shm_close(struct vm_area_struct *vma) case _DRM_SCATTER_GATHER: break; case _DRM_CONSISTENT: - dmah.vaddr = map->handle; - dmah.busaddr = map->offset; - dmah.size = map->size; - __drm_legacy_pci_free(dev, &dmah); + dma_free_coherent(&dev->pdev->dev, + map->size, + map->handle, + map->offset); break; } kfree(map); diff --git a/include/drm/drm_legacy.h b/include/drm/drm_legacy.h index 5745710453c8..dcef3598f49e 100644 --- a/include/drm/drm_legacy.h +++ b/include/drm/drm_legacy.h @@ -194,17 +194,11 @@ void drm_legacy_idlelock_release(struct drm_lock_data *lock); #ifdef CONFIG_PCI -void __drm_legacy_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah); int drm_legacy_pci_init(struct drm_driver *driver, struct pci_driver *pdriver); void drm_legacy_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver); #else -static inline void __drm_legacy_pci_free(struct drm_device *dev, - drm_dma_handle_t *dmah) -{ -} - static inline int drm_legacy_pci_init(struct drm_driver *driver, struct pci_driver *pdriver) {