diff options
Diffstat (limited to 'drivers/gpu/drm/omapdrm/omap_gem.c')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/omap_gem.c | 76 |
1 files changed, 31 insertions, 45 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index 6b58a5bb7b44..71e79f53489a 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -8,9 +8,11 @@ #include <linux/seq_file.h> #include <linux/shmem_fs.h> #include <linux/spinlock.h> -#include <linux/pfn_t.h> +#include <linux/vmalloc.h> +#include <drm/drm_dumb_buffers.h> #include <drm/drm_prime.h> +#include <drm/drm_print.h> #include <drm/drm_vma_manager.h> #include "omap_drv.h" @@ -48,7 +50,7 @@ struct omap_gem_object { * OMAP_BO_MEM_DMA_API flag set) * * - buffers imported from dmabuf (with the OMAP_BO_MEM_DMABUF flag set) - * if they are physically contiguous (when sgt->orig_nents == 1) + * if they are physically contiguous * * - buffers mapped through the TILER when pin_cnt is not zero, in which * case the DMA address points to the TILER aperture @@ -148,12 +150,18 @@ u64 omap_gem_mmap_offset(struct drm_gem_object *obj) return drm_vma_node_offset_addr(&obj->vma_node); } +static bool omap_gem_sgt_is_contiguous(struct sg_table *sgt, size_t size) +{ + return !(drm_prime_get_contiguous_size(sgt) < size); +} + static bool omap_gem_is_contiguous(struct omap_gem_object *omap_obj) { if (omap_obj->flags & OMAP_BO_MEM_DMA_API) return true; - if ((omap_obj->flags & OMAP_BO_MEM_DMABUF) && omap_obj->sgt->nents == 1) + if ((omap_obj->flags & OMAP_BO_MEM_DMABUF) && + omap_gem_sgt_is_contiguous(omap_obj->sgt, omap_obj->base.size)) return true; return false; @@ -364,8 +372,7 @@ static vm_fault_t omap_gem_fault_1d(struct drm_gem_object *obj, VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, pfn, pfn << PAGE_SHIFT); - return vmf_insert_mixed(vma, vmf->address, - __pfn_to_pfn_t(pfn, PFN_DEV)); + return vmf_insert_mixed(vma, vmf->address, pfn); } /* Special handling for the case of faulting in 2d tiled buffers */ @@ -460,8 +467,7 @@ static vm_fault_t omap_gem_fault_2d(struct drm_gem_object *obj, pfn, pfn << PAGE_SHIFT); for (i = n; i > 0; i--) { - ret = vmf_insert_mixed(vma, - vaddr, __pfn_to_pfn_t(pfn, PFN_DEV)); + ret = vmf_insert_mixed(vma, vaddr, pfn); if (ret & VM_FAULT_ERROR) break; pfn += priv->usergart[fmt].stride_pfn; @@ -524,26 +530,11 @@ fail: return ret; } -/** We override mainly to fix up some of the vm mapping flags.. */ -int omap_gem_mmap(struct file *filp, struct vm_area_struct *vma) -{ - int ret; - - ret = drm_gem_mmap(filp, vma); - if (ret) { - DBG("mmap failed: %d", ret); - return ret; - } - - return omap_gem_mmap_obj(vma->vm_private_data, vma); -} - -int omap_gem_mmap_obj(struct drm_gem_object *obj, - struct vm_area_struct *vma) +static int omap_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) { struct omap_gem_object *omap_obj = to_omap_bo(obj); - vm_flags_mod(vma, VM_MIXEDMAP, VM_PFNMAP); + vm_flags_set(vma, VM_DONTEXPAND | VM_DONTDUMP | VM_IO | VM_MIXEDMAP); if (omap_obj->flags & OMAP_BO_WC) { vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); @@ -563,12 +554,14 @@ int omap_gem_mmap_obj(struct drm_gem_object *obj, * address_space (so unmap_mapping_range does what we want, * in particular in the case of mmap'd dmabufs) */ - vma->vm_pgoff = 0; + vma->vm_pgoff -= drm_vma_node_start(&obj->vma_node); vma_set_file(vma, obj->filp); vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); } + vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); + return 0; } @@ -589,15 +582,13 @@ int omap_gem_mmap_obj(struct drm_gem_object *obj, int omap_gem_dumb_create(struct drm_file *file, struct drm_device *dev, struct drm_mode_create_dumb *args) { - union omap_gem_size gsize; - - args->pitch = DIV_ROUND_UP(args->width * args->bpp, 8); - - args->size = PAGE_ALIGN(args->pitch * args->height); + union omap_gem_size gsize = { }; + int ret; - gsize = (union omap_gem_size){ - .bytes = args->size, - }; + ret = drm_mode_size_dumb(dev, args, SZ_8, 0); + if (ret) + return ret; + gsize.bytes = args->size; return omap_gem_new_handle(dev, file, gsize, OMAP_BO_SCANOUT | OMAP_BO_WC, &args->handle); @@ -1029,8 +1020,8 @@ struct sg_table *omap_gem_get_sg(struct drm_gem_object *obj, if (addr) { for_each_sg(sgt->sgl, sg, count, i) { - sg_set_page(sg, phys_to_page(addr), len, - offset_in_page(addr)); + sg_set_page(sg, pfn_to_page(__phys_to_pfn(addr)), + len, offset_in_page(addr)); sg_dma_address(sg) = addr; sg_dma_len(sg) = len; @@ -1282,6 +1273,7 @@ static const struct vm_operations_struct omap_gem_vm_ops = { static const struct drm_gem_object_funcs omap_gem_object_funcs = { .free = omap_gem_free_object, .export = omap_gem_prime_export, + .mmap = omap_gem_object_mmap, .vm_ops = &omap_gem_vm_ops, }; @@ -1397,7 +1389,7 @@ struct drm_gem_object *omap_gem_new_dmabuf(struct drm_device *dev, size_t size, union omap_gem_size gsize; /* Without a DMM only physically contiguous buffers can be supported. */ - if (sgt->orig_nents != 1 && !priv->has_dmm) + if (!omap_gem_sgt_is_contiguous(sgt, size) && !priv->has_dmm) return ERR_PTR(-EINVAL); gsize.bytes = PAGE_ALIGN(size); @@ -1407,11 +1399,9 @@ struct drm_gem_object *omap_gem_new_dmabuf(struct drm_device *dev, size_t size, omap_obj = to_omap_bo(obj); - mutex_lock(&omap_obj->lock); - omap_obj->sgt = sgt; - if (sgt->orig_nents == 1) { + if (omap_gem_sgt_is_contiguous(sgt, size)) { omap_obj->dma_addr = sg_dma_address(sgt->sgl); } else { /* Create pages list from sgt */ @@ -1423,21 +1413,17 @@ struct drm_gem_object *omap_gem_new_dmabuf(struct drm_device *dev, size_t size, pages = kcalloc(npages, sizeof(*pages), GFP_KERNEL); if (!pages) { omap_gem_free_object(obj); - obj = ERR_PTR(-ENOMEM); - goto done; + return ERR_PTR(-ENOMEM); } omap_obj->pages = pages; ret = drm_prime_sg_to_page_array(sgt, pages, npages); if (ret) { omap_gem_free_object(obj); - obj = ERR_PTR(-ENOMEM); - goto done; + return ERR_PTR(-ENOMEM); } } -done: - mutex_unlock(&omap_obj->lock); return obj; } |