diff options
author | Thomas Zimmermann <tzimmermann@suse.de> | 2019-11-07 12:43:07 +0300 |
---|---|---|
committer | Thomas Zimmermann <tzimmermann@suse.de> | 2019-11-08 14:30:17 +0300 |
commit | d56cbce7be1a310651bc293f0c2ccc1dfce994e5 (patch) | |
tree | 152c74c781e2ba41de75c8fba8feadba11b6338b /drivers/gpu/drm/udl | |
parent | 08b22f65b309649057edfbae1d8772b04210b486 (diff) | |
download | linux-d56cbce7be1a310651bc293f0c2ccc1dfce994e5.tar.xz |
drm/udl: Remove struct udl_gem_object and functions
Simply removes all the obsolete GEM code from udl. No functional
changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107094307.19870-5-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/udl')
-rw-r--r-- | drivers/gpu/drm/udl/Makefile | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/udl/udl_dmabuf.c | 254 | ||||
-rw-r--r-- | drivers/gpu/drm/udl/udl_drv.h | 29 | ||||
-rw-r--r-- | drivers/gpu/drm/udl/udl_gem.c | 206 |
4 files changed, 1 insertions, 490 deletions
diff --git a/drivers/gpu/drm/udl/Makefile b/drivers/gpu/drm/udl/Makefile index e5bb6f757e11..9c42820ae33d 100644 --- a/drivers/gpu/drm/udl/Makefile +++ b/drivers/gpu/drm/udl/Makefile @@ -1,4 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only -udl-y := udl_drv.o udl_modeset.o udl_connector.o udl_encoder.o udl_main.o udl_fb.o udl_transfer.o udl_gem.o udl_dmabuf.o +udl-y := udl_drv.o udl_modeset.o udl_connector.o udl_encoder.o udl_main.o udl_fb.o udl_transfer.o udl_gem.o obj-$(CONFIG_DRM_UDL) := udl.o diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c deleted file mode 100644 index b1c1ee64de59..000000000000 --- a/drivers/gpu/drm/udl/udl_dmabuf.c +++ /dev/null @@ -1,254 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * udl_dmabuf.c - * - * Copyright (c) 2014 The Chromium OS Authors - */ - -#include <linux/shmem_fs.h> -#include <linux/dma-buf.h> - -#include <drm/drm_prime.h> - -#include "udl_drv.h" - -struct udl_drm_dmabuf_attachment { - struct sg_table sgt; - enum dma_data_direction dir; - bool is_mapped; -}; - -static int udl_attach_dma_buf(struct dma_buf *dmabuf, - struct dma_buf_attachment *attach) -{ - struct udl_drm_dmabuf_attachment *udl_attach; - - DRM_DEBUG_PRIME("[DEV:%s] size:%zd\n", dev_name(attach->dev), - attach->dmabuf->size); - - udl_attach = kzalloc(sizeof(*udl_attach), GFP_KERNEL); - if (!udl_attach) - return -ENOMEM; - - udl_attach->dir = DMA_NONE; - attach->priv = udl_attach; - - return 0; -} - -static void udl_detach_dma_buf(struct dma_buf *dmabuf, - struct dma_buf_attachment *attach) -{ - struct udl_drm_dmabuf_attachment *udl_attach = attach->priv; - struct sg_table *sgt; - - if (!udl_attach) - return; - - DRM_DEBUG_PRIME("[DEV:%s] size:%zd\n", dev_name(attach->dev), - attach->dmabuf->size); - - sgt = &udl_attach->sgt; - - if (udl_attach->dir != DMA_NONE) - dma_unmap_sg(attach->dev, sgt->sgl, sgt->nents, - udl_attach->dir); - - sg_free_table(sgt); - kfree(udl_attach); - attach->priv = NULL; -} - -static struct sg_table *udl_map_dma_buf(struct dma_buf_attachment *attach, - enum dma_data_direction dir) -{ - struct udl_drm_dmabuf_attachment *udl_attach = attach->priv; - struct udl_gem_object *obj = to_udl_bo(attach->dmabuf->priv); - struct drm_device *dev = obj->base.dev; - struct udl_device *udl = dev->dev_private; - struct scatterlist *rd, *wr; - struct sg_table *sgt = NULL; - unsigned int i; - int page_count; - int nents, ret; - - DRM_DEBUG_PRIME("[DEV:%s] size:%zd dir=%d\n", dev_name(attach->dev), - attach->dmabuf->size, dir); - - /* just return current sgt if already requested. */ - if (udl_attach->dir == dir && udl_attach->is_mapped) - return &udl_attach->sgt; - - if (!obj->pages) { - ret = udl_gem_get_pages(obj); - if (ret) { - DRM_ERROR("failed to map pages.\n"); - return ERR_PTR(ret); - } - } - - page_count = obj->base.size / PAGE_SIZE; - obj->sg = drm_prime_pages_to_sg(obj->pages, page_count); - if (IS_ERR(obj->sg)) { - DRM_ERROR("failed to allocate sgt.\n"); - return ERR_CAST(obj->sg); - } - - sgt = &udl_attach->sgt; - - ret = sg_alloc_table(sgt, obj->sg->orig_nents, GFP_KERNEL); - if (ret) { - DRM_ERROR("failed to alloc sgt.\n"); - return ERR_PTR(-ENOMEM); - } - - mutex_lock(&udl->gem_lock); - - rd = obj->sg->sgl; - wr = sgt->sgl; - for (i = 0; i < sgt->orig_nents; ++i) { - sg_set_page(wr, sg_page(rd), rd->length, rd->offset); - rd = sg_next(rd); - wr = sg_next(wr); - } - - if (dir != DMA_NONE) { - nents = dma_map_sg(attach->dev, sgt->sgl, sgt->orig_nents, dir); - if (!nents) { - DRM_ERROR("failed to map sgl with iommu.\n"); - sg_free_table(sgt); - sgt = ERR_PTR(-EIO); - goto err_unlock; - } - } - - udl_attach->is_mapped = true; - udl_attach->dir = dir; - attach->priv = udl_attach; - -err_unlock: - mutex_unlock(&udl->gem_lock); - return sgt; -} - -static void udl_unmap_dma_buf(struct dma_buf_attachment *attach, - struct sg_table *sgt, - enum dma_data_direction dir) -{ - /* Nothing to do. */ - DRM_DEBUG_PRIME("[DEV:%s] size:%zd dir:%d\n", dev_name(attach->dev), - attach->dmabuf->size, dir); -} - -static void *udl_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num) -{ - /* TODO */ - - return NULL; -} - -static void udl_dmabuf_kunmap(struct dma_buf *dma_buf, - unsigned long page_num, void *addr) -{ - /* TODO */ -} - -static int udl_dmabuf_mmap(struct dma_buf *dma_buf, - struct vm_area_struct *vma) -{ - /* TODO */ - - return -EINVAL; -} - -static const struct dma_buf_ops udl_dmabuf_ops = { - .attach = udl_attach_dma_buf, - .detach = udl_detach_dma_buf, - .map_dma_buf = udl_map_dma_buf, - .unmap_dma_buf = udl_unmap_dma_buf, - .map = udl_dmabuf_kmap, - .unmap = udl_dmabuf_kunmap, - .mmap = udl_dmabuf_mmap, - .release = drm_gem_dmabuf_release, -}; - -struct dma_buf *udl_gem_prime_export(struct drm_gem_object *obj, int flags) -{ - DEFINE_DMA_BUF_EXPORT_INFO(exp_info); - - exp_info.ops = &udl_dmabuf_ops; - exp_info.size = obj->size; - exp_info.flags = flags; - exp_info.priv = obj; - - return drm_gem_dmabuf_export(obj->dev, &exp_info); -} - -static int udl_prime_create(struct drm_device *dev, - size_t size, - struct sg_table *sg, - struct udl_gem_object **obj_p) -{ - struct udl_gem_object *obj; - int npages; - - npages = size / PAGE_SIZE; - - *obj_p = NULL; - obj = udl_gem_alloc_object(dev, npages * PAGE_SIZE); - if (!obj) - return -ENOMEM; - - obj->sg = sg; - obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); - if (obj->pages == NULL) { - DRM_ERROR("obj pages is NULL %d\n", npages); - return -ENOMEM; - } - - drm_prime_sg_to_page_addr_arrays(sg, obj->pages, NULL, npages); - - *obj_p = obj; - return 0; -} - -struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev, - struct dma_buf *dma_buf) -{ - struct dma_buf_attachment *attach; - struct sg_table *sg; - struct udl_gem_object *uobj; - int ret; - - /* need to attach */ - get_device(dev->dev); - attach = dma_buf_attach(dma_buf, dev->dev); - if (IS_ERR(attach)) { - put_device(dev->dev); - return ERR_CAST(attach); - } - - get_dma_buf(dma_buf); - - sg = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); - if (IS_ERR(sg)) { - ret = PTR_ERR(sg); - goto fail_detach; - } - - ret = udl_prime_create(dev, dma_buf->size, sg, &uobj); - if (ret) - goto fail_unmap; - - uobj->base.import_attach = attach; - - return &uobj->base; - -fail_unmap: - dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL); -fail_detach: - dma_buf_detach(dma_buf, attach); - dma_buf_put(dma_buf); - put_device(dev->dev); - return ERR_PTR(ret); -} diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h index 630e64abc986..987d99ae2dfa 100644 --- a/drivers/gpu/drm/udl/udl_drv.h +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -73,18 +73,8 @@ struct udl_device { #define to_udl(x) container_of(x, struct udl_device, drm) -struct udl_gem_object { - struct drm_gem_object base; - struct page **pages; - void *vmapping; - struct sg_table *sg; -}; - -#define to_udl_bo(x) container_of(x, struct udl_gem_object, base) - struct udl_framebuffer { struct drm_framebuffer base; - struct udl_gem_object *obj; struct drm_gem_shmem_object *shmem; bool active_16; /* active on the 16-bit channel */ }; @@ -120,27 +110,8 @@ int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr, u32 byte_offset, u32 device_byte_offset, u32 byte_width, int *ident_ptr, int *sent_ptr); -int udl_dumb_create(struct drm_file *file_priv, - struct drm_device *dev, - struct drm_mode_create_dumb *args); -int udl_gem_mmap(struct drm_file *file_priv, struct drm_device *dev, - uint32_t handle, uint64_t *offset); - struct drm_gem_object *udl_driver_gem_create_object(struct drm_device *dev, size_t size); -void udl_gem_free_object(struct drm_gem_object *gem_obj); -struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev, - size_t size); -struct dma_buf *udl_gem_prime_export(struct drm_gem_object *obj, int flags); -struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev, - struct dma_buf *dma_buf); - -int udl_gem_get_pages(struct udl_gem_object *obj); -void udl_gem_put_pages(struct udl_gem_object *obj); -int udl_gem_vmap(struct udl_gem_object *obj); -void udl_gem_vunmap(struct udl_gem_object *obj); -int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); -vm_fault_t udl_gem_fault(struct vm_fault *vmf); int udl_handle_damage(struct udl_framebuffer *fb, int x, int y, int width, int height); diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c index 9762265edfcf..6eade6b4b0dc 100644 --- a/drivers/gpu/drm/udl/udl_gem.c +++ b/drivers/gpu/drm/udl/udl_gem.c @@ -120,209 +120,3 @@ struct drm_gem_object *udl_driver_gem_create_object(struct drm_device *dev, return obj; } - -struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev, - size_t size) -{ - struct drm_gem_object *obj; - - obj = dev->driver->gem_create_object(dev, size); - if (obj == NULL) - return NULL; - - if (drm_gem_object_init(dev, obj, size) != 0) { - kfree(obj); - return NULL; - } - - return to_udl_bo(obj); -} - -static int -udl_gem_create(struct drm_file *file, - struct drm_device *dev, - uint64_t size, - uint32_t *handle_p) -{ - struct udl_gem_object *obj; - int ret; - u32 handle; - - size = roundup(size, PAGE_SIZE); - - obj = udl_gem_alloc_object(dev, size); - if (obj == NULL) - return -ENOMEM; - - ret = drm_gem_handle_create(file, &obj->base, &handle); - if (ret) { - drm_gem_object_release(&obj->base); - kfree(obj); - return ret; - } - - drm_gem_object_put_unlocked(&obj->base); - *handle_p = handle; - return 0; -} - -int udl_dumb_create(struct drm_file *file, - struct drm_device *dev, - struct drm_mode_create_dumb *args) -{ - args->pitch = args->width * DIV_ROUND_UP(args->bpp, 8); - args->size = args->pitch * args->height; - return udl_gem_create(file, dev, - args->size, &args->handle); -} - -int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct drm_gem_object *obj; - int ret; - - ret = drm_gem_mmap(filp, vma); - if (ret) - return ret; - - obj = vma->vm_private_data; - - vma->vm_flags &= ~VM_PFNMAP; - vma->vm_flags |= VM_MIXEDMAP; - - vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); - if (obj->import_attach) - vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); - - return ret; -} - -vm_fault_t udl_gem_fault(struct vm_fault *vmf) -{ - struct vm_area_struct *vma = vmf->vma; - struct udl_gem_object *obj = to_udl_bo(vma->vm_private_data); - struct page *page; - unsigned int page_offset; - - page_offset = (vmf->address - vma->vm_start) >> PAGE_SHIFT; - - if (!obj->pages) - return VM_FAULT_SIGBUS; - - page = obj->pages[page_offset]; - return vmf_insert_page(vma, vmf->address, page); -} - -int udl_gem_get_pages(struct udl_gem_object *obj) -{ - struct page **pages; - - if (obj->pages) - return 0; - - pages = drm_gem_get_pages(&obj->base); - if (IS_ERR(pages)) - return PTR_ERR(pages); - - obj->pages = pages; - - return 0; -} - -void udl_gem_put_pages(struct udl_gem_object *obj) -{ - if (obj->base.import_attach) { - kvfree(obj->pages); - obj->pages = NULL; - return; - } - - drm_gem_put_pages(&obj->base, obj->pages, false, false); - obj->pages = NULL; -} - -int udl_gem_vmap(struct udl_gem_object *obj) -{ - int page_count = obj->base.size / PAGE_SIZE; - int ret; - - if (obj->base.import_attach) { - obj->vmapping = dma_buf_vmap(obj->base.import_attach->dmabuf); - if (!obj->vmapping) - return -ENOMEM; - return 0; - } - - ret = udl_gem_get_pages(obj); - if (ret) - return ret; - - obj->vmapping = vmap(obj->pages, page_count, 0, PAGE_KERNEL); - if (!obj->vmapping) - return -ENOMEM; - return 0; -} - -void udl_gem_vunmap(struct udl_gem_object *obj) -{ - if (obj->base.import_attach) { - dma_buf_vunmap(obj->base.import_attach->dmabuf, obj->vmapping); - return; - } - - vunmap(obj->vmapping); - - udl_gem_put_pages(obj); -} - -void udl_gem_free_object(struct drm_gem_object *gem_obj) -{ - struct udl_gem_object *obj = to_udl_bo(gem_obj); - - if (obj->vmapping) - udl_gem_vunmap(obj); - - if (gem_obj->import_attach) { - drm_prime_gem_destroy(gem_obj, obj->sg); - put_device(gem_obj->dev->dev); - } - - if (obj->pages) - udl_gem_put_pages(obj); - - drm_gem_free_mmap_offset(gem_obj); -} - -/* the dumb interface doesn't work with the GEM straight MMAP - interface, it expects to do MMAP on the drm fd, like normal */ -int udl_gem_mmap(struct drm_file *file, struct drm_device *dev, - uint32_t handle, uint64_t *offset) -{ - struct udl_gem_object *gobj; - struct drm_gem_object *obj; - struct udl_device *udl = to_udl(dev); - int ret = 0; - - mutex_lock(&udl->gem_lock); - obj = drm_gem_object_lookup(file, handle); - if (obj == NULL) { - ret = -ENOENT; - goto unlock; - } - gobj = to_udl_bo(obj); - - ret = udl_gem_get_pages(gobj); - if (ret) - goto out; - ret = drm_gem_create_mmap_offset(obj); - if (ret) - goto out; - - *offset = drm_vma_node_offset_addr(&gobj->base.vma_node); - -out: - drm_gem_object_put_unlocked(&gobj->base); -unlock: - mutex_unlock(&udl->gem_lock); - return ret; -} |