diff options
Diffstat (limited to 'bsd-core/drm_bufs.c')
| -rw-r--r-- | bsd-core/drm_bufs.c | 1110 |
1 files changed, 0 insertions, 1110 deletions
diff --git a/bsd-core/drm_bufs.c b/bsd-core/drm_bufs.c deleted file mode 100644 index 53cff648..00000000 --- a/bsd-core/drm_bufs.c +++ /dev/null @@ -1,1110 +0,0 @@ -/*- - * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. - * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * Authors: - * Rickard E. (Rik) Faith <faith@valinux.com> - * Gareth Hughes <gareth@valinux.com> - * - */ - -/** @file drm_bufs.c - * Implementation of the ioctls for setup of DRM mappings and DMA buffers. - */ - -#include "dev/pci/pcireg.h" - -#include "drmP.h" - -/* Allocation of PCI memory resources (framebuffer, registers, etc.) for - * drm_get_resource_*. Note that they are not RF_ACTIVE, so there's no virtual - * address for accessing them. Cleaned up at unload. - */ -static int drm_alloc_resource(struct drm_device *dev, int resource) -{ - if (resource >= DRM_MAX_PCI_RESOURCE) { - DRM_ERROR("Resource %d too large\n", resource); - return 1; - } - - DRM_UNLOCK(); - if (dev->pcir[resource] != NULL) { - DRM_LOCK(); - return 0; - } - - dev->pcirid[resource] = PCIR_BAR(resource); - dev->pcir[resource] = bus_alloc_resource_any(dev->device, - SYS_RES_MEMORY, &dev->pcirid[resource], RF_SHAREABLE); - DRM_LOCK(); - - if (dev->pcir[resource] == NULL) { - DRM_ERROR("Couldn't find resource 0x%x\n", resource); - return 1; - } - - return 0; -} - -unsigned long drm_get_resource_start(struct drm_device *dev, - unsigned int resource) -{ - if (drm_alloc_resource(dev, resource) != 0) - return 0; - - return rman_get_start(dev->pcir[resource]); -} - -unsigned long drm_get_resource_len(struct drm_device *dev, - unsigned int resource) -{ - if (drm_alloc_resource(dev, resource) != 0) - return 0; - - return rman_get_size(dev->pcir[resource]); -} - -int drm_addmap(struct drm_device * dev, unsigned long offset, - unsigned long size, - enum drm_map_type type, enum drm_map_flags flags, drm_local_map_t **map_ptr) -{ - drm_local_map_t *map; - int align; - /*drm_agp_mem_t *entry; - int valid;*/ - - /* Only allow shared memory to be removable since we only keep enough - * book keeping information about shared memory to allow for removal - * when processes fork. - */ - if ((flags & _DRM_REMOVABLE) && type != _DRM_SHM) { - DRM_ERROR("Requested removable map for non-DRM_SHM\n"); - return EINVAL; - } - if ((offset & PAGE_MASK) || (size & PAGE_MASK)) { - DRM_ERROR("offset/size not page aligned: 0x%lx/0x%lx\n", - offset, size); - return EINVAL; - } - if (offset + size < offset) { - DRM_ERROR("offset and size wrap around: 0x%lx/0x%lx\n", - offset, size); - return EINVAL; - } - - DRM_DEBUG("offset = 0x%08lx, size = 0x%08lx, type = %d\n", offset, - size, type); - - /* Check if this is just another version of a kernel-allocated map, and - * just hand that back if so. - */ - if (type == _DRM_REGISTERS || type == _DRM_FRAME_BUFFER || - type == _DRM_SHM) { - TAILQ_FOREACH(map, &dev->maplist, link) { - if (map->type == type && (map->offset == offset || - (map->type == _DRM_SHM && - map->flags == _DRM_CONTAINS_LOCK))) { - map->size = size; - DRM_DEBUG("Found kernel map %d\n", type); - goto done; - } - } - } - DRM_UNLOCK(); - - /* Allocate a new map structure, fill it in, and do any type-specific - * initialization necessary. - */ - map = malloc(sizeof(*map), DRM_MEM_MAPS, M_ZERO | M_NOWAIT); - if (!map) { - DRM_LOCK(); - return ENOMEM; - } - - map->offset = offset; - map->size = size; - map->type = type; - map->flags = flags; - - switch (map->type) { - case _DRM_REGISTERS: - map->handle = drm_ioremap(dev, map); - if (!(map->flags & _DRM_WRITE_COMBINING)) - break; - /* FALLTHROUGH */ - case _DRM_FRAME_BUFFER: - if (drm_mtrr_add(map->offset, map->size, DRM_MTRR_WC) == 0) - map->mtrr = 1; - break; - case _DRM_SHM: - map->handle = malloc(map->size, DRM_MEM_MAPS, M_NOWAIT); - DRM_DEBUG("%lu %d %p\n", - map->size, drm_order(map->size), map->handle); - if (!map->handle) { - free(map, DRM_MEM_MAPS); - DRM_LOCK(); - return ENOMEM; - } - map->offset = (unsigned long)map->handle; - if (map->flags & _DRM_CONTAINS_LOCK) { - /* Prevent a 2nd X Server from creating a 2nd lock */ - DRM_LOCK(); - if (dev->lock.hw_lock != NULL) { - DRM_UNLOCK(); - free(map->handle, DRM_MEM_MAPS); - free(map, DRM_MEM_MAPS); - return EBUSY; - } - dev->lock.hw_lock = map->handle; /* Pointer to lock */ - DRM_UNLOCK(); - } - break; - case _DRM_AGP: - /*valid = 0;*/ - /* In some cases (i810 driver), user space may have already - * added the AGP base itself, because dev->agp->base previously - * only got set during AGP enable. So, only add the base - * address if the map's offset isn't already within the - * aperture. - */ - if (map->offset < dev->agp->base || - map->offset > dev->agp->base + - dev->agp->info.ai_aperture_size - 1) { - map->offset += dev->agp->base; - } - map->mtrr = dev->agp->mtrr; /* for getmap */ - /*for (entry = dev->agp->memory; entry; entry = entry->next) { - if ((map->offset >= entry->bound) && - (map->offset + map->size <= - entry->bound + entry->pages * PAGE_SIZE)) { - valid = 1; - break; - } - } - if (!valid) { - free(map, DRM_MEM_MAPS); - DRM_LOCK(); - return EACCES; - }*/ - break; - case _DRM_SCATTER_GATHER: - if (!dev->sg) { - free(map, DRM_MEM_MAPS); - DRM_LOCK(); - return EINVAL; - } - map->offset += dev->sg->handle; - break; - case _DRM_CONSISTENT: - /* Unfortunately, we don't get any alignment specification from - * the caller, so we have to guess. drm_pci_alloc requires - * a power-of-two alignment, so try to align the bus address of - * the map to it size if possible, otherwise just assume - * PAGE_SIZE alignment. - */ - align = map->size; - if ((align & (align - 1)) != 0) - align = PAGE_SIZE; - map->dmah = drm_pci_alloc(dev, map->size, align, 0xfffffffful); - if (map->dmah == NULL) { - free(map, DRM_MEM_MAPS); - DRM_LOCK(); - return ENOMEM; - } - map->handle = map->dmah->vaddr; - map->offset = map->dmah->busaddr; - break; - default: - DRM_ERROR("Bad map type %d\n", map->type); - free(map, DRM_MEM_MAPS); - DRM_LOCK(); - return EINVAL; - } - - DRM_LOCK(); - TAILQ_INSERT_TAIL(&dev->maplist, map, link); - -done: - /* Jumped to, with lock held, when a kernel map is found. */ - - DRM_DEBUG("Added map %d 0x%lx/0x%lx\n", map->type, map->offset, - map->size); - - *map_ptr = map; - - return 0; -} - -int drm_addmap_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - struct drm_map *request = data; - drm_local_map_t *map; - int err; - - if (!(dev->flags & (FREAD|FWRITE))) - return EACCES; /* Require read/write */ - - if (!DRM_SUSER(DRM_CURPROC) && request->type != _DRM_AGP) - return EACCES; - - DRM_LOCK(); - err = drm_addmap(dev, request->offset, request->size, request->type, - request->flags, &map); - DRM_UNLOCK(); - if (err != 0) - return err; - - request->offset = map->offset; - request->size = map->size; - request->type = map->type; - request->flags = map->flags; - request->mtrr = map->mtrr; - request->handle = map->handle; - - if (request->type != _DRM_SHM) { - request->handle = (void *)request->offset; - } - - return 0; -} - -void drm_rmmap(struct drm_device *dev, drm_local_map_t *map) -{ - DRM_SPINLOCK_ASSERT(&dev->dev_lock); - - TAILQ_REMOVE(&dev->maplist, map, link); - - switch (map->type) { - case _DRM_REGISTERS: - if (map->bsr == NULL) - drm_ioremapfree(map); - /* FALLTHROUGH */ - case _DRM_FRAME_BUFFER: - if (map->mtrr) { - int __unused retcode; - - retcode = drm_mtrr_del(0, map->offset, map->size, - DRM_MTRR_WC); - DRM_DEBUG("mtrr_del = %d\n", retcode); - } - break; - case _DRM_SHM: - free(map->handle, DRM_MEM_MAPS); - break; - case _DRM_AGP: - case _DRM_SCATTER_GATHER: - break; - case _DRM_CONSISTENT: - drm_pci_free(dev, map->dmah); - break; - default: - DRM_ERROR("Bad map type %d\n", map->type); - break; - } - - if (map->bsr != NULL) { - bus_release_resource(dev->device, SYS_RES_MEMORY, map->rid, - map->bsr); - } - - free(map, DRM_MEM_MAPS); -} - -/* Remove a map private from list and deallocate resources if the mapping - * isn't in use. - */ - -int drm_rmmap_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_local_map_t *map; - struct drm_map *request = data; - - DRM_LOCK(); - TAILQ_FOREACH(map, &dev->maplist, link) { - if (map->handle == request->handle && - map->flags & _DRM_REMOVABLE) - break; - } - - /* No match found. */ - if (map == NULL) { - DRM_UNLOCK(); - return EINVAL; - } - - drm_rmmap(dev, map); - - DRM_UNLOCK(); - - return 0; -} - - -static void drm_cleanup_buf_error(struct drm_device *dev, - drm_buf_entry_t *entry) -{ - int i; - - if (entry->seg_count) { - for (i = 0; i < entry->seg_count; i++) { - drm_pci_free(dev, entry->seglist[i]); - } - free(entry->seglist, DRM_MEM_SEGS); - - entry->seg_count = 0; - } - - if (entry->buf_count) { - for (i = 0; i < entry->buf_count; i++) { - free(entry->buflist[i].dev_private, DRM_MEM_BUFS); - } - free(entry->buflist, DRM_MEM_BUFS); - - entry->buf_count = 0; - } -} - -static int drm_do_addbufs_agp(struct drm_device *dev, struct drm_buf_desc *request) -{ - drm_device_dma_t *dma = dev->dma; - drm_buf_entry_t *entry; - /*drm_agp_mem_t *agp_entry; - int valid*/ - drm_buf_t *buf; - unsigned long offset; - unsigned long agp_offset; - int count; - int order; - int size; - int alignment; - int page_order; - int total; - int byte_count; - int i; - drm_buf_t **temp_buflist; - - count = request->count; - order = drm_order(request->size); - size = 1 << order; - - alignment = (request->flags & _DRM_PAGE_ALIGN) - ? round_page(size) : size; - page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; - total = PAGE_SIZE << page_order; - - byte_count = 0; - agp_offset = dev->agp->base + request->agp_start; - - DRM_DEBUG("count: %d\n", count); - DRM_DEBUG("order: %d\n", order); - DRM_DEBUG("size: %d\n", size); - DRM_DEBUG("agp_offset: 0x%lx\n", agp_offset); - DRM_DEBUG("alignment: %d\n", alignment); - DRM_DEBUG("page_order: %d\n", page_order); - DRM_DEBUG("total: %d\n", total); - - /* Make sure buffers are located in AGP memory that we own */ - /* Breaks MGA due to drm_alloc_agp not setting up entries for the - * memory. Safe to ignore for now because these ioctls are still - * root-only. - */ - /*valid = 0; - for (agp_entry = dev->agp->memory; agp_entry; - agp_entry = agp_entry->next) { - if ((agp_offset >= agp_entry->bound) && - (agp_offset + total * count <= - agp_entry->bound + agp_entry->pages * PAGE_SIZE)) { - valid = 1; - break; - } - } - if (!valid) { - DRM_DEBUG("zone invalid\n"); - return EINVAL; - }*/ - - entry = &dma->bufs[order]; - - entry->buflist = malloc(count * sizeof(*entry->buflist), DRM_MEM_BUFS, - M_NOWAIT | M_ZERO); - if (!entry->buflist) { - return ENOMEM; - } - - entry->buf_size = size; - entry->page_order = page_order; - - offset = 0; - - while (entry->buf_count < count) { - buf = &entry->buflist[entry->buf_count]; - buf->idx = dma->buf_count + entry->buf_count; - buf->total = alignment; - buf->order = order; - buf->used = 0; - - buf->offset = (dma->byte_count + offset); - buf->bus_address = agp_offset + offset; - buf->address = (void *)(agp_offset + offset); - buf->next = NULL; - buf->pending = 0; - buf->file_priv = NULL; - - buf->dev_priv_size = dev->driver->buf_priv_size; - buf->dev_private = malloc(buf->dev_priv_size, DRM_MEM_BUFS, - M_NOWAIT | M_ZERO); - if (buf->dev_private == NULL) { - /* Set count correctly so we free the proper amount. */ - entry->buf_count = count; - drm_cleanup_buf_error(dev, entry); - return ENOMEM; - } - - offset += alignment; - entry->buf_count++; - byte_count += PAGE_SIZE << page_order; - } - - DRM_DEBUG("byte_count: %d\n", byte_count); - - temp_buflist = realloc(dma->buflist, - (dma->buf_count + entry->buf_count) * sizeof(*dma->buflist), - DRM_MEM_BUFS, M_NOWAIT); - if (temp_buflist == NULL) { - /* Free the entry because it isn't valid */ - drm_cleanup_buf_error(dev, entry); - return ENOMEM; - } - dma->buflist = temp_buflist; - - for (i = 0; i < entry->buf_count; i++) { - dma->buflist[i + dma->buf_count] = &entry->buflist[i]; - } - - dma->buf_count += entry->buf_count; - dma->byte_count += byte_count; - - DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count); - DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count); - - request->count = entry->buf_count; - request->size = size; - - dma->flags = _DRM_DMA_USE_AGP; - - return 0; -} - -static int drm_do_addbufs_pci(struct drm_device *dev, struct drm_buf_desc *request) -{ - drm_device_dma_t *dma = dev->dma; - int count; - int order; - int size; - int total; - int page_order; - drm_buf_entry_t *entry; - drm_buf_t *buf; - int alignment; - unsigned long offset; - int i; - int byte_count; - int page_count; - unsigned long *temp_pagelist; - drm_buf_t **temp_buflist; - - count = request->count; - order = drm_order(request->size); - size = 1 << order; - - DRM_DEBUG("count=%d, size=%d (%d), order=%d\n", - request->count, request->size, size, order); - - alignment = (request->flags & _DRM_PAGE_ALIGN) - ? round_page(size) : size; - page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; - total = PAGE_SIZE << page_order; - - entry = &dma->bufs[order]; - - entry->buflist = malloc(count * sizeof(*entry->buflist), DRM_MEM_BUFS, - M_NOWAIT | M_ZERO); - entry->seglist = malloc(count * sizeof(*entry->seglist), DRM_MEM_SEGS, - M_NOWAIT | M_ZERO); - - /* Keep the original pagelist until we know all the allocations - * have succeeded - */ - temp_pagelist = malloc((dma->page_count + (count << page_order)) * - sizeof(*dma->pagelist), DRM_MEM_PAGES, M_NOWAIT); - - if (entry->buflist == NULL || entry->seglist == NULL || - temp_pagelist == NULL) { - free(temp_pagelist, DRM_MEM_PAGES); - free(entry->seglist, DRM_MEM_SEGS); - free(entry->buflist, DRM_MEM_BUFS); - return ENOMEM; - } - - memcpy(temp_pagelist, dma->pagelist, dma->page_count * - sizeof(*dma->pagelist)); - - DRM_DEBUG("pagelist: %d entries\n", - dma->page_count + (count << page_order)); - - entry->buf_size = size; - entry->page_order = page_order; - byte_count = 0; - page_count = 0; - - while (entry->buf_count < count) { - DRM_SPINUNLOCK(&dev->dma_lock); - drm_dma_handle_t *dmah = drm_pci_alloc(dev, size, alignment, - 0xfffffffful); - DRM_SPINLOCK(&dev->dma_lock); - if (dmah == NULL) { - /* Set count correctly so we free the proper amount. */ - entry->buf_count = count; - entry->seg_count = count; - drm_cleanup_buf_error(dev, entry); - free(temp_pagelist, DRM_MEM_PAGES); - return ENOMEM; - } - - entry->seglist[entry->seg_count++] = dmah; - for (i = 0; i < (1 << page_order); i++) { - DRM_DEBUG("page %d @ %p\n", - dma->page_count + page_count, - (char *)dmah->vaddr + PAGE_SIZE * i); - temp_pagelist[dma->page_count + page_count++] = - (long)dmah->vaddr + PAGE_SIZE * i; - } - for (offset = 0; - offset + size <= total && entry->buf_count < count; - offset += alignment, ++entry->buf_count) { - buf = &entry->buflist[entry->buf_count]; - buf->idx = dma->buf_count + entry->buf_count; - buf->total = alignment; - buf->order = order; - buf->used = 0; - buf->offset = (dma->byte_count + byte_count + offset); - buf->address = ((char *)dmah->vaddr + offset); - buf->bus_address = dmah->busaddr + offset; - buf->next = NULL; - buf->pending = 0; - buf->file_priv = NULL; - - buf->dev_priv_size = dev->driver->buf_priv_size; - buf->dev_private = malloc(buf->dev_priv_size, - DRM_MEM_BUFS, M_NOWAIT | M_ZERO); - if (buf->dev_private == NULL) { - /* Set count correctly so we free the proper amount. */ - entry->buf_count = count; - entry->seg_count = count; - drm_cleanup_buf_error(dev, entry); - free(temp_pagelist, DRM_MEM_PAGES); - return ENOMEM; - } - - DRM_DEBUG("buffer %d @ %p\n", - entry->buf_count, buf->address); - } - byte_count += PAGE_SIZE << page_order; - } - - temp_buflist = realloc(dma->buflist, - (dma->buf_count + entry->buf_count) * sizeof(*dma->buflist), - DRM_MEM_BUFS, M_NOWAIT); - if (temp_buflist == NULL) { - /* Free the entry because it isn't valid */ - drm_cleanup_buf_error(dev, entry); - free(temp_pagelist, DRM_MEM_PAGES); - return ENOMEM; - } - dma->buflist = temp_buflist; - - for (i = 0; i < entry->buf_count; i++) { - dma->buflist[i + dma->buf_count] = &entry->buflist[i]; - } - - /* No allocations failed, so now we can replace the orginal pagelist - * with the new one. - */ - free(dma->pagelist, DRM_MEM_PAGES); - dma->pagelist = temp_pagelist; - - dma->buf_count += entry->buf_count; - dma->seg_count += entry->seg_count; - dma->page_count += entry->seg_count << page_order; - dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order); - - request->count = entry->buf_count; - request->size = size; - - return 0; - -} - -static int drm_do_addbufs_sg(struct drm_device *dev, struct drm_buf_desc *request) -{ - drm_device_dma_t *dma = dev->dma; - drm_buf_entry_t *entry; - drm_buf_t *buf; - unsigned long offset; - unsigned long agp_offset; - int count; - int order; - int size; - int alignment; - int page_order; - int total; - int byte_count; - int i; - drm_buf_t **temp_buflist; - - count = request->count; - order = drm_order(request->size); - size = 1 << order; - - alignment = (request->flags & _DRM_PAGE_ALIGN) - ? round_page(size) : size; - page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; - total = PAGE_SIZE << page_order; - - byte_count = 0; - agp_offset = request->agp_start; - - DRM_DEBUG("count: %d\n", count); - DRM_DEBUG("order: %d\n", order); - DRM_DEBUG("size: %d\n", size); - DRM_DEBUG("agp_offset: %ld\n", agp_offset); - DRM_DEBUG("alignment: %d\n", alignment); - DRM_DEBUG("page_order: %d\n", page_order); - DRM_DEBUG("total: %d\n", total); - - entry = &dma->bufs[order]; - - entry->buflist = malloc(count * sizeof(*entry->buflist), DRM_MEM_BUFS, - M_NOWAIT | M_ZERO); - if (entry->buflist == NULL) - return ENOMEM; - - entry->buf_size = size; - entry->page_order = page_order; - - offset = 0; - - while (entry->buf_count < count) { - buf = &entry->buflist[entry->buf_count]; - buf->idx = dma->buf_count + entry->buf_count; - buf->total = alignment; - buf->order = order; - buf->used = 0; - - buf->offset = (dma->byte_count + offset); - buf->bus_address = agp_offset + offset; - buf->address = (void *)(agp_offset + offset + dev->sg->handle); - buf->next = NULL; - buf->pending = 0; - buf->file_priv = NULL; - - buf->dev_priv_size = dev->driver->buf_priv_size; - buf->dev_private = malloc(buf->dev_priv_size, DRM_MEM_BUFS, - M_NOWAIT | M_ZERO); - if (buf->dev_private == NULL) { - /* Set count correctly so we free the proper amount. */ - entry->buf_count = count; - drm_cleanup_buf_error(dev, entry); - return ENOMEM; - } - - DRM_DEBUG("buffer %d @ %p\n", - entry->buf_count, buf->address); - - offset += alignment; - entry->buf_count++; - byte_count += PAGE_SIZE << page_order; - } - - DRM_DEBUG("byte_count: %d\n", byte_count); - - temp_buflist = realloc(dma->buflist, - (dma->buf_count + entry->buf_count) * sizeof(*dma->buflist), - DRM_MEM_BUFS, M_NOWAIT); - if (temp_buflist == NULL) { - /* Free the entry because it isn't valid */ - drm_cleanup_buf_error(dev, entry); - return ENOMEM; - } - dma->buflist = temp_buflist; - - for (i = 0; i < entry->buf_count; i++) { - dma->buflist[i + dma->buf_count] = &entry->buflist[i]; - } - - dma->buf_count += entry->buf_count; - dma->byte_count += byte_count; - - DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count); - DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count); - - request->count = entry->buf_count; - request->size = size; - - dma->flags = _DRM_DMA_USE_SG; - - return 0; -} - -int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc *request) -{ - int order, ret; - - if (request->count < 0 || request->count > 4096) - return EINVAL; - - order = drm_order(request->size); - if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) - return EINVAL; - - DRM_SPINLOCK(&dev->dma_lock); - - /* No more allocations after first buffer-using ioctl. */ - if (dev->buf_use != 0) { - DRM_SPINUNLOCK(&dev->dma_lock); - return EBUSY; - } - /* No more than one allocation per order */ - if (dev->dma->bufs[order].buf_count != 0) { - DRM_SPINUNLOCK(&dev->dma_lock); - return ENOMEM; - } - - ret = drm_do_addbufs_agp(dev, request); - - DRM_SPINUNLOCK(&dev->dma_lock); - - return ret; -} - -int drm_addbufs_sg(struct drm_device *dev, struct drm_buf_desc *request) -{ - int order, ret; - - if (!DRM_SUSER(DRM_CURPROC)) - return EACCES; - - if (request->count < 0 || request->count > 4096) - return EINVAL; - - order = drm_order(request->size); - if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) - return EINVAL; - - DRM_SPINLOCK(&dev->dma_lock); - - /* No more allocations after first buffer-using ioctl. */ - if (dev->buf_use != 0) { - DRM_SPINUNLOCK(&dev->dma_lock); - return EBUSY; - } - /* No more than one allocation per order */ - if (dev->dma->bufs[order].buf_count != 0) { - DRM_SPINUNLOCK(&dev->dma_lock); - return ENOMEM; - } - - ret = drm_do_addbufs_sg(dev, request); - - DRM_SPINUNLOCK(&dev->dma_lock); - - return ret; -} - -int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc *request) -{ - int order, ret; - - if (!DRM_SUSER(DRM_CURPROC)) - return EACCES; - - if (request->count < 0 || request->count > 4096) - return EINVAL; - - order = drm_order(request->size); - if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) - return EINVAL; - - DRM_SPINLOCK(&dev->dma_lock); - - /* No more allocations after first buffer-using ioctl. */ - if (dev->buf_use != 0) { - DRM_SPINUNLOCK(&dev->dma_lock); - return EBUSY; - } - /* No more than one allocation per order */ - if (dev->dma->bufs[order].buf_count != 0) { - DRM_SPINUNLOCK(&dev->dma_lock); - return ENOMEM; - } - - ret = drm_do_addbufs_pci(dev, request); - - DRM_SPINUNLOCK(&dev->dma_lock); - - return ret; -} - -int drm_addbufs(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - struct drm_buf_desc *request = data; - int err; - - if (request->flags & _DRM_AGP_BUFFER) - err = drm_addbufs_agp(dev, request); - else if (request->flags & _DRM_SG_BUFFER) - err = drm_addbufs_sg(dev, request); - else - err = drm_addbufs_pci(dev, request); - - return err; -} - -int drm_infobufs(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_device_dma_t *dma = dev->dma; - struct drm_buf_info *request = data; - int i; - int count; - int retcode = 0; - - DRM_SPINLOCK(&dev->dma_lock); - ++dev->buf_use; /* Can't allocate more after this call */ - DRM_SPINUNLOCK(&dev->dma_lock); - - for (i = 0, count = 0; i < DRM_MAX_ORDER + 1; i++) { - if (dma->bufs[i].buf_count) - ++count; - } - - DRM_DEBUG("count = %d\n", count); - - if (request->count >= count) { - for (i = 0, count = 0; i < DRM_MAX_ORDER + 1; i++) { - if (dma->bufs[i].buf_count) { - struct drm_buf_desc from; - - from.count = dma->bufs[i].buf_count; - from.size = dma->bufs[i].buf_size; - from.low_mark = dma->bufs[i].freelist.low_mark; - from.high_mark = dma->bufs[i].freelist.high_mark; - - if (DRM_COPY_TO_USER(&request->list[count], &from, - sizeof(struct drm_buf_desc)) != 0) { - retcode = EFAULT; - break; - } - - DRM_DEBUG("%d %d %d %d %d\n", - i, dma->bufs[i].buf_count, - dma->bufs[i].buf_size, - dma->bufs[i].freelist.low_mark, - dma->bufs[i].freelist.high_mark); - ++count; - } - } - } - request->count = count; - - return retcode; -} - -int drm_markbufs(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_device_dma_t *dma = dev->dma; - struct drm_buf_desc *request = data; - int order; - - DRM_DEBUG("%d, %d, %d\n", - request->size, request->low_mark, request->high_mark); - - - order = drm_order(request->size); - if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER || - request->low_mark < 0 || request->high_mark < 0) { - return EINVAL; - } - - DRM_SPINLOCK(&dev->dma_lock); - if (request->low_mark > dma->bufs[order].buf_count || - request->high_mark > dma->bufs[order].buf_count) { - DRM_SPINUNLOCK(&dev->dma_lock); - return EINVAL; - } - - dma->bufs[order].freelist.low_mark = request->low_mark; - dma->bufs[order].freelist.high_mark = request->high_mark; - DRM_SPINUNLOCK(&dev->dma_lock); - - return 0; -} - -int drm_freebufs(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_device_dma_t *dma = dev->dma; - struct drm_buf_free *request = data; - int i; - int idx; - drm_buf_t *buf; - int retcode = 0; - - DRM_DEBUG("%d\n", request->count); - - DRM_SPINLOCK(&dev->dma_lock); - for (i = 0; i < request->count; i++) { - if (DRM_COPY_FROM_USER(&idx, &request->list[i], sizeof(idx))) { - retcode = EFAULT; - break; - } - if (idx < 0 || idx >= dma->buf_count) { - DRM_ERROR("Index %d (of %d max)\n", - idx, dma->buf_count - 1); - retcode = EINVAL; - break; - } - buf = dma->buflist[idx]; - if (buf->file_priv != file_priv) { - DRM_ERROR("Process %d freeing buffer not owned\n", - DRM_CURRENTPID); - retcode = EINVAL; - break; - } - drm_free_buffer(dev, buf); - } - DRM_SPINUNLOCK(&dev->dma_lock); - - return retcode; -} - -int drm_mapbufs(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_device_dma_t *dma = dev->dma; - int retcode = 0; - const int zero = 0; - vm_offset_t address; - struct vmspace *vms; - vm_ooffset_t foff; - vm_size_t size; - vm_offset_t vaddr; - struct drm_buf_map *request = data; - int i; - - vms = DRM_CURPROC->td_proc->p_vmspace; - - DRM_SPINLOCK(&dev->dma_lock); - dev->buf_use++; /* Can't allocate more after this call */ - DRM_SPINUNLOCK(&dev->dma_lock); - - if (request->count < dma->buf_count) - goto done; - - if ((drm_core_has_AGP(dev) && (dma->flags & _DRM_DMA_USE_AGP)) || - (drm_core_check_feature(dev, DRIVER_SG) && - (dma->flags & _DRM_DMA_USE_SG))) { - drm_local_map_t *map = dev->agp_buffer_map; - - if (map == NULL) { - retcode = EINVAL; - goto done; - } - size = round_page(map->size); - foff = map->offset; - } else { - size = round_page(dma->byte_count), - foff = 0; - } - - vaddr = round_page((vm_offset_t)vms->vm_daddr + MAXDSIZ); -#if __FreeBSD_version >= 600023 - retcode = vm_mmap(&vms->vm_map, &vaddr, size, PROT_READ | PROT_WRITE, - VM_PROT_ALL, MAP_SHARED | MAP_NOSYNC, OBJT_DEVICE, dev->devnode, foff); -#else - retcode = vm_mmap(&vms->vm_map, &vaddr, size, PROT_READ | PROT_WRITE, - VM_PROT_ALL, MAP_SHARED | MAP_NOSYNC, SLIST_FIRST(&dev->devnode->si_hlist), - foff); -#endif - if (retcode) - goto done; - - request->virtual = (void *)vaddr; - - for (i = 0; i < dma->buf_count; i++) { - if (DRM_COPY_TO_USER(&request->list[i].idx, - &dma->buflist[i]->idx, sizeof(request->list[0].idx))) { - retcode = EFAULT; - goto done; - } - if (DRM_COPY_TO_USER(&request->list[i].total, - &dma->buflist[i]->total, sizeof(request->list[0].total))) { - retcode = EFAULT; - goto done; - } - if (DRM_COPY_TO_USER(&request->list[i].used, &zero, - sizeof(zero))) { - retcode = EFAULT; - goto done; - } - address = vaddr + dma->buflist[i]->offset; /* *** */ - if (DRM_COPY_TO_USER(&request->list[i].address, &address, - sizeof(address))) { - retcode = EFAULT; - goto done; - } - } - - done: - request->count = dma->buf_count; - - DRM_DEBUG("%d buffers, retcode = %d\n", request->count, retcode); - - return retcode; -} - -/* - * Compute order. Can be made faster. - */ -int drm_order(unsigned long size) -{ - int order; - - if (size == 0) - return 0; - - order = flsl(size) - 1; - if (size & ~(1ul << order)) - ++order; - - return order; -} |