diff options
Diffstat (limited to 'drivers/gpu/drm/drm_bufs.c')
| -rw-r--r-- | drivers/gpu/drm/drm_bufs.c | 510 |
1 files changed, 154 insertions, 356 deletions
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c index 0411d912d82..68175b54504 100644 --- a/drivers/gpu/drm/drm_bufs.c +++ b/drivers/gpu/drm/drm_bufs.c @@ -34,22 +34,11 @@ */ #include <linux/vmalloc.h> +#include <linux/slab.h> #include <linux/log2.h> +#include <linux/export.h> #include <asm/shmparam.h> -#include "drmP.h" - -resource_size_t drm_get_resource_start(struct drm_device *dev, unsigned int resource) -{ - return pci_resource_start(dev->pdev, resource); -} -EXPORT_SYMBOL(drm_get_resource_start); - -resource_size_t drm_get_resource_len(struct drm_device *dev, unsigned int resource) -{ - return pci_resource_len(dev->pdev, resource); -} - -EXPORT_SYMBOL(drm_get_resource_len); +#include <drm/drmP.h> static struct drm_map_list *drm_find_matching_map(struct drm_device *dev, struct drm_local_map *map) @@ -58,10 +47,11 @@ static struct drm_map_list *drm_find_matching_map(struct drm_device *dev, list_for_each_entry(entry, &dev->maplist, head) { /* * Because the kernel-userspace ABI is fixed at a 32-bit offset - * while PCI resources may live above that, we ignore the map - * offset for maps of type _DRM_FRAMEBUFFER or _DRM_REGISTERS. - * It is assumed that each driver will have only one resource of - * each type. + * while PCI resources may live above that, we only compare the + * lower 32 bits of the map offset for maps of type + * _DRM_FRAMEBUFFER or _DRM_REGISTERS. + * It is assumed that if a driver have more than one resource + * of each type, the lower 32 bits are different. */ if (!entry->map || map->type != entry->map->type || @@ -71,9 +61,12 @@ static struct drm_map_list *drm_find_matching_map(struct drm_device *dev, case _DRM_SHM: if (map->flags != _DRM_CONTAINS_LOCK) break; + return entry; case _DRM_REGISTERS: case _DRM_FRAME_BUFFER: - return entry; + if ((entry->map->offset & 0xffffffff) == + (map->offset & 0xffffffff)) + return entry; default: /* Make gcc happy */ ; } @@ -151,7 +144,7 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, unsigned long user_token; int ret; - map = drm_alloc(sizeof(*map), DRM_MEM_MAPS); + map = kmalloc(sizeof(*map), GFP_KERNEL); if (!map) return -ENOMEM; @@ -165,7 +158,7 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, * when processes fork. */ if ((map->flags & _DRM_REMOVABLE) && map->type != _DRM_SHM) { - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -EINVAL; } DRM_DEBUG("offset = 0x%08llx, size = 0x%08lx, type = %d\n", @@ -179,7 +172,7 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, map->size = PAGE_ALIGN(map->size); if ((map->offset & (~(resource_size_t)PAGE_MASK)) || (map->size & (~PAGE_MASK))) { - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -EINVAL; } map->mtrr = -1; @@ -188,16 +181,13 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, switch (map->type) { case _DRM_REGISTERS: case _DRM_FRAME_BUFFER: -#if !defined(__sparc__) && !defined(__alpha__) && !defined(__ia64__) && !defined(__powerpc64__) && !defined(__x86_64__) +#if !defined(__sparc__) && !defined(__alpha__) && !defined(__ia64__) && !defined(__powerpc64__) && !defined(__x86_64__) && !defined(__arm__) if (map->offset + (map->size-1) < map->offset || map->offset < virt_to_phys(high_memory)) { - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -EINVAL; } #endif -#ifdef __alpha__ - map->offset += dev->hose->mem_space->start; -#endif /* Some drivers preinitialize some maps, without the X Server * needing to be aware of it. Therefore, we just return success * when the server tries to create a duplicate map. @@ -212,22 +202,24 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, list->map->size = map->size; } - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); *maplist = list; return 0; } - if (drm_core_has_MTRR(dev)) { - if (map->type == _DRM_FRAME_BUFFER || - (map->flags & _DRM_WRITE_COMBINING)) { - map->mtrr = mtrr_add(map->offset, map->size, - MTRR_TYPE_WRCOMB, 1); - } + if (map->type == _DRM_FRAME_BUFFER || + (map->flags & _DRM_WRITE_COMBINING)) { + map->mtrr = + arch_phys_wc_add(map->offset, map->size); } if (map->type == _DRM_REGISTERS) { - map->handle = ioremap(map->offset, map->size); + if (map->flags & _DRM_WRITE_COMBINING) + map->handle = ioremap_wc(map->offset, + map->size); + else + map->handle = ioremap(map->offset, map->size); if (!map->handle) { - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -ENOMEM; } } @@ -243,15 +235,15 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, list->map->size = map->size; } - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); *maplist = list; return 0; } map->handle = vmalloc_user(map->size); DRM_DEBUG("%lu %d %p\n", - map->size, drm_order(map->size), map->handle); + map->size, order_base_2(map->size), map->handle); if (!map->handle) { - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -ENOMEM; } map->offset = (unsigned long)map->handle; @@ -259,7 +251,7 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, /* Prevent a 2nd X Server from creating a 2nd lock */ if (dev->primary->master->lock.hw_lock != NULL) { vfree(map->handle); - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -EBUSY; } dev->sigdata.lock = dev->primary->master->lock.hw_lock = map->handle; /* Pointer to lock */ @@ -269,8 +261,8 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, struct drm_agp_mem *entry; int valid = 0; - if (!drm_core_has_AGP(dev)) { - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + if (!dev->agp) { + kfree(map); return -EINVAL; } #ifdef __alpha__ @@ -303,20 +295,17 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, } } if (!list_empty(&dev->agp->memory) && !valid) { - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -EPERM; } DRM_DEBUG("AGP offset = 0x%08llx, size = 0x%08lx\n", (unsigned long long)map->offset, map->size); break; - case _DRM_GEM: - DRM_ERROR("tried to rmmap GEM object\n"); - break; } case _DRM_SCATTER_GATHER: if (!dev->sg) { - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -EINVAL; } map->offset += (unsigned long)dev->sg->virtual; @@ -326,9 +315,9 @@ 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, 0xffffffffUL); + dmah = drm_pci_alloc(dev, map->size, map->size); if (!dmah) { - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -ENOMEM; } map->handle = dmah->vaddr; @@ -336,18 +325,17 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, kfree(dmah); break; default: - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -EINVAL; } - list = drm_alloc(sizeof(*list), DRM_MEM_MAPS); + list = kzalloc(sizeof(*list), GFP_KERNEL); if (!list) { if (map->type == _DRM_REGISTERS) iounmap(map->handle); - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return -EINVAL; } - memset(list, 0, sizeof(*list)); list->map = map; mutex_lock(&dev->struct_mutex); @@ -362,8 +350,8 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, if (ret) { if (map->type == _DRM_REGISTERS) iounmap(map->handle); - drm_free(map, sizeof(*map), DRM_MEM_MAPS); - drm_free(list, sizeof(*list), DRM_MEM_MAPS); + kfree(map); + kfree(list); mutex_unlock(&dev->struct_mutex); return ret; } @@ -371,10 +359,11 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, list->user_token = list->hash.key << PAGE_SHIFT; mutex_unlock(&dev->struct_mutex); - list->master = dev->primary->master; + if (!(map->flags & _DRM_DRIVER)) + list->master = dev->primary->master; *maplist = list; return 0; - } +} int drm_addmap(struct drm_device * dev, resource_size_t offset, unsigned int size, enum drm_map_type type, @@ -420,6 +409,15 @@ int drm_addmap_ioctl(struct drm_device *dev, void *data, /* avoid a warning on 64-bit, this casting isn't very nice, but the API is set so too late */ map->handle = (void *)(unsigned long)maplist->user_token; + + /* + * It appears that there are no users of this value whatsoever -- + * drmAddMap just discards it. Let's not encourage its use. + * (Keeping drm_addmap_core's returned mtrr value would be wrong -- + * it's not a real mtrr index anymore.) + */ + map->mtrr = -1; + return 0; } @@ -447,7 +445,7 @@ int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map) list_del(&r_list->head); drm_ht_remove_key(&dev->map_hash, r_list->user_token >> PAGE_SHIFT); - drm_free(r_list, sizeof(*r_list), DRM_MEM_MAPS); + kfree(r_list); found = 1; break; } @@ -461,11 +459,7 @@ int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map) iounmap(map->handle); /* FALLTHROUGH */ case _DRM_FRAME_BUFFER: - if (drm_core_has_MTRR(dev) && map->mtrr >= 0) { - int retcode; - retcode = mtrr_del(map->mtrr, map->offset, map->size); - DRM_DEBUG("mtrr_del=%d\n", retcode); - } + arch_phys_wc_del(map->mtrr); break; case _DRM_SHM: vfree(map->handle); @@ -486,11 +480,8 @@ int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map) dmah.size = map->size; __drm_pci_free(dev, &dmah); break; - case _DRM_GEM: - DRM_ERROR("tried to rmmap GEM object\n"); - break; } - drm_free(map, sizeof(*map), DRM_MEM_MAPS); + kfree(map); return 0; } @@ -581,24 +572,16 @@ static void drm_cleanup_buf_error(struct drm_device * dev, drm_pci_free(dev, entry->seglist[i]); } } - drm_free(entry->seglist, - entry->seg_count * - sizeof(*entry->seglist), DRM_MEM_SEGS); + kfree(entry->seglist); entry->seg_count = 0; } if (entry->buf_count) { for (i = 0; i < entry->buf_count; i++) { - if (entry->buflist[i].dev_private) { - drm_free(entry->buflist[i].dev_private, - entry->buflist[i].dev_priv_size, - DRM_MEM_BUFS); - } + kfree(entry->buflist[i].dev_private); } - drm_free(entry->buflist, - entry->buf_count * - sizeof(*entry->buflist), DRM_MEM_BUFS); + kfree(entry->buflist); entry->buf_count = 0; } @@ -638,7 +621,7 @@ int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request) return -EINVAL; count = request->count; - order = drm_order(request->size); + order = order_base_2(request->size); size = 1 << order; alignment = (request->flags & _DRM_PAGE_ALIGN) @@ -659,8 +642,6 @@ int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request) if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return -EINVAL; - if (dev->queue_count) - return -EBUSY; /* Not while in use */ /* Make sure buffers are located in AGP memory that we own */ valid = 0; @@ -675,13 +656,13 @@ int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request) DRM_DEBUG("zone invalid\n"); return -EINVAL; } - spin_lock(&dev->count_lock); + spin_lock(&dev->buf_lock); if (dev->buf_use) { - spin_unlock(&dev->count_lock); + spin_unlock(&dev->buf_lock); return -EBUSY; } atomic_inc(&dev->buf_alloc); - spin_unlock(&dev->count_lock); + spin_unlock(&dev->buf_lock); mutex_lock(&dev->struct_mutex); entry = &dma->bufs[order]; @@ -697,14 +678,12 @@ int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request) return -EINVAL; } - entry->buflist = drm_alloc(count * sizeof(*entry->buflist), - DRM_MEM_BUFS); + entry->buflist = kzalloc(count * sizeof(*entry->buflist), GFP_KERNEL); if (!entry->buflist) { mutex_unlock(&dev->struct_mutex); atomic_dec(&dev->buf_alloc); return -ENOMEM; } - memset(entry->buflist, 0, count * sizeof(*entry->buflist)); entry->buf_size = size; entry->page_order = page_order; @@ -724,11 +703,10 @@ int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request) buf->next = NULL; buf->waiting = 0; buf->pending = 0; - init_waitqueue_head(&buf->dma_wait); buf->file_priv = NULL; buf->dev_priv_size = dev->driver->dev_priv_size; - buf->dev_private = drm_alloc(buf->dev_priv_size, DRM_MEM_BUFS); + buf->dev_private = kzalloc(buf->dev_priv_size, GFP_KERNEL); if (!buf->dev_private) { /* Set count correctly so we free the proper amount. */ entry->buf_count = count; @@ -737,7 +715,6 @@ int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request) atomic_dec(&dev->buf_alloc); return -ENOMEM; } - memset(buf->dev_private, 0, buf->dev_priv_size); DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address); @@ -748,10 +725,9 @@ int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request) DRM_DEBUG("byte_count: %d\n", byte_count); - temp_buflist = drm_realloc(dma->buflist, - dma->buf_count * sizeof(*dma->buflist), - (dma->buf_count + entry->buf_count) - * sizeof(*dma->buflist), DRM_MEM_BUFS); + temp_buflist = krealloc(dma->buflist, + (dma->buf_count + entry->buf_count) * + sizeof(*dma->buflist), GFP_KERNEL); if (!temp_buflist) { /* Free the entry because it isn't valid */ drm_cleanup_buf_error(dev, entry); @@ -815,29 +791,27 @@ int drm_addbufs_pci(struct drm_device * dev, struct drm_buf_desc * request) return -EPERM; count = request->count; - order = drm_order(request->size); + order = order_base_2(request->size); size = 1 << order; - DRM_DEBUG("count=%d, size=%d (%d), order=%d, queue_count=%d\n", - request->count, request->size, size, order, dev->queue_count); + DRM_DEBUG("count=%d, size=%d (%d), order=%d\n", + request->count, request->size, size, order); if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return -EINVAL; - if (dev->queue_count) - return -EBUSY; /* Not while in use */ alignment = (request->flags & _DRM_PAGE_ALIGN) ? PAGE_ALIGN(size) : size; page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; total = PAGE_SIZE << page_order; - spin_lock(&dev->count_lock); + spin_lock(&dev->buf_lock); if (dev->buf_use) { - spin_unlock(&dev->count_lock); + spin_unlock(&dev->buf_lock); return -EBUSY; } atomic_inc(&dev->buf_alloc); - spin_unlock(&dev->count_lock); + spin_unlock(&dev->buf_lock); mutex_lock(&dev->struct_mutex); entry = &dma->bufs[order]; @@ -853,36 +827,29 @@ int drm_addbufs_pci(struct drm_device * dev, struct drm_buf_desc * request) return -EINVAL; } - entry->buflist = drm_alloc(count * sizeof(*entry->buflist), - DRM_MEM_BUFS); + entry->buflist = kzalloc(count * sizeof(*entry->buflist), GFP_KERNEL); if (!entry->buflist) { mutex_unlock(&dev->struct_mutex); atomic_dec(&dev->buf_alloc); return -ENOMEM; } - memset(entry->buflist, 0, count * sizeof(*entry->buflist)); - entry->seglist = drm_alloc(count * sizeof(*entry->seglist), - DRM_MEM_SEGS); + entry->seglist = kzalloc(count * sizeof(*entry->seglist), GFP_KERNEL); if (!entry->seglist) { - drm_free(entry->buflist, - count * sizeof(*entry->buflist), DRM_MEM_BUFS); + kfree(entry->buflist); mutex_unlock(&dev->struct_mutex); atomic_dec(&dev->buf_alloc); return -ENOMEM; } - memset(entry->seglist, 0, count * sizeof(*entry->seglist)); /* Keep the original pagelist until we know all the allocations * have succeeded */ - temp_pagelist = drm_alloc((dma->page_count + (count << page_order)) - * sizeof(*dma->pagelist), DRM_MEM_PAGES); + temp_pagelist = kmalloc((dma->page_count + (count << page_order)) * + sizeof(*dma->pagelist), GFP_KERNEL); if (!temp_pagelist) { - drm_free(entry->buflist, - count * sizeof(*entry->buflist), DRM_MEM_BUFS); - drm_free(entry->seglist, - count * sizeof(*entry->seglist), DRM_MEM_SEGS); + kfree(entry->buflist); + kfree(entry->seglist); mutex_unlock(&dev->struct_mutex); atomic_dec(&dev->buf_alloc); return -ENOMEM; @@ -899,16 +866,14 @@ int drm_addbufs_pci(struct drm_device * dev, struct drm_buf_desc * request) while (entry->buf_count < count) { - dmah = drm_pci_alloc(dev, PAGE_SIZE << page_order, 0x1000, 0xfffffffful); + dmah = drm_pci_alloc(dev, PAGE_SIZE << page_order, 0x1000); if (!dmah) { /* Set count correctly so we free the proper amount. */ entry->buf_count = count; entry->seg_count = count; drm_cleanup_buf_error(dev, entry); - drm_free(temp_pagelist, - (dma->page_count + (count << page_order)) - * sizeof(*dma->pagelist), DRM_MEM_PAGES); + kfree(temp_pagelist); mutex_unlock(&dev->struct_mutex); atomic_dec(&dev->buf_alloc); return -ENOMEM; @@ -935,27 +900,21 @@ int drm_addbufs_pci(struct drm_device * dev, struct drm_buf_desc * request) buf->next = NULL; buf->waiting = 0; buf->pending = 0; - init_waitqueue_head(&buf->dma_wait); buf->file_priv = NULL; buf->dev_priv_size = dev->driver->dev_priv_size; - buf->dev_private = drm_alloc(buf->dev_priv_size, - DRM_MEM_BUFS); + buf->dev_private = kzalloc(buf->dev_priv_size, + GFP_KERNEL); if (!buf->dev_private) { /* Set count correctly so we free the proper amount. */ entry->buf_count = count; entry->seg_count = count; drm_cleanup_buf_error(dev, entry); - drm_free(temp_pagelist, - (dma->page_count + - (count << page_order)) - * sizeof(*dma->pagelist), - DRM_MEM_PAGES); + kfree(temp_pagelist); mutex_unlock(&dev->struct_mutex); atomic_dec(&dev->buf_alloc); return -ENOMEM; } - memset(buf->dev_private, 0, buf->dev_priv_size); DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address); @@ -963,16 +922,13 @@ int drm_addbufs_pci(struct drm_device * dev, struct drm_buf_desc * request) byte_count += PAGE_SIZE << page_order; } - temp_buflist = drm_realloc(dma->buflist, - dma->buf_count * sizeof(*dma->buflist), - (dma->buf_count + entry->buf_count) - * sizeof(*dma->buflist), DRM_MEM_BUFS); + temp_buflist = krealloc(dma->buflist, + (dma->buf_count + entry->buf_count) * + sizeof(*dma->buflist), GFP_KERNEL); if (!temp_buflist) { /* Free the entry because it isn't valid */ drm_cleanup_buf_error(dev, entry); - drm_free(temp_pagelist, - (dma->page_count + (count << page_order)) - * sizeof(*dma->pagelist), DRM_MEM_PAGES); + kfree(temp_pagelist); mutex_unlock(&dev->struct_mutex); atomic_dec(&dev->buf_alloc); return -ENOMEM; @@ -983,13 +939,11 @@ int drm_addbufs_pci(struct drm_device * dev, struct drm_buf_desc * request) dma->buflist[i + dma->buf_count] = &entry->buflist[i]; } - /* No allocations failed, so now we can replace the orginal pagelist + /* No allocations failed, so now we can replace the original pagelist * with the new one. */ if (dma->page_count) { - drm_free(dma->pagelist, - dma->page_count * sizeof(*dma->pagelist), - DRM_MEM_PAGES); + kfree(dma->pagelist); } dma->pagelist = temp_pagelist; @@ -1039,7 +993,7 @@ static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request return -EPERM; count = request->count; - order = drm_order(request->size); + order = order_base_2(request->size); size = 1 << order; alignment = (request->flags & _DRM_PAGE_ALIGN) @@ -1060,16 +1014,14 @@ static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return -EINVAL; - if (dev->queue_count) - return -EBUSY; /* Not while in use */ - spin_lock(&dev->count_lock); + spin_lock(&dev->buf_lock); if (dev->buf_use) { - spin_unlock(&dev->count_lock); + spin_unlock(&dev->buf_lock); return -EBUSY; } atomic_inc(&dev->buf_alloc); - spin_unlock(&dev->count_lock); + spin_unlock(&dev->buf_lock); mutex_lock(&dev->struct_mutex); entry = &dma->bufs[order]; @@ -1085,14 +1037,13 @@ static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request return -EINVAL; } - entry->buflist = drm_alloc(count * sizeof(*entry->buflist), - DRM_MEM_BUFS); + entry->buflist = kzalloc(count * sizeof(*entry->buflist), + GFP_KERNEL); if (!entry->buflist) { mutex_unlock(&dev->struct_mutex); atomic_dec(&dev->buf_alloc); return -ENOMEM; } - memset(entry->buflist, 0, count * sizeof(*entry->buflist)); entry->buf_size = size; entry->page_order = page_order; @@ -1113,11 +1064,10 @@ static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request buf->next = NULL; buf->waiting = 0; buf->pending = 0; - init_waitqueue_head(&buf->dma_wait); buf->file_priv = NULL; buf->dev_priv_size = dev->driver->dev_priv_size; - buf->dev_private = drm_alloc(buf->dev_priv_size, DRM_MEM_BUFS); + buf->dev_private = kzalloc(buf->dev_priv_size, GFP_KERNEL); if (!buf->dev_private) { /* Set count correctly so we free the proper amount. */ entry->buf_count = count; @@ -1127,8 +1077,6 @@ static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request return -ENOMEM; } - memset(buf->dev_private, 0, buf->dev_priv_size); - DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address); offset += alignment; @@ -1138,10 +1086,9 @@ static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request DRM_DEBUG("byte_count: %d\n", byte_count); - temp_buflist = drm_realloc(dma->buflist, - dma->buf_count * sizeof(*dma->buflist), - (dma->buf_count + entry->buf_count) - * sizeof(*dma->buflist), DRM_MEM_BUFS); + temp_buflist = krealloc(dma->buflist, + (dma->buf_count + entry->buf_count) * + sizeof(*dma->buflist), GFP_KERNEL); if (!temp_buflist) { /* Free the entry because it isn't valid */ drm_cleanup_buf_error(dev, entry); @@ -1174,167 +1121,6 @@ static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request return 0; } -static int drm_addbufs_fb(struct drm_device * dev, struct drm_buf_desc * request) -{ - struct drm_device_dma *dma = dev->dma; - struct drm_buf_entry *entry; - struct drm_buf *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; - struct drm_buf **temp_buflist; - - if (!drm_core_check_feature(dev, DRIVER_FB_DMA)) - return -EINVAL; - - if (!dma) - return -EINVAL; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - count = request->count; - order = drm_order(request->size); - size = 1 << order; - - alignment = (request->flags & _DRM_PAGE_ALIGN) - ? PAGE_ALIGN(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: %lu\n", agp_offset); - DRM_DEBUG("alignment: %d\n", alignment); - DRM_DEBUG("page_order: %d\n", page_order); - DRM_DEBUG("total: %d\n", total); - - if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) - return -EINVAL; - if (dev->queue_count) - return -EBUSY; /* Not while in use */ - - spin_lock(&dev->count_lock); - if (dev->buf_use) { - spin_unlock(&dev->count_lock); - return -EBUSY; - } - atomic_inc(&dev->buf_alloc); - spin_unlock(&dev->count_lock); - - mutex_lock(&dev->struct_mutex); - entry = &dma->bufs[order]; - if (entry->buf_count) { - mutex_unlock(&dev->struct_mutex); - atomic_dec(&dev->buf_alloc); - return -ENOMEM; /* May only call once for each order */ - } - - if (count < 0 || count > 4096) { - mutex_unlock(&dev->struct_mutex); - atomic_dec(&dev->buf_alloc); - return -EINVAL; - } - - entry->buflist = drm_alloc(count * sizeof(*entry->buflist), - DRM_MEM_BUFS); - if (!entry->buflist) { - mutex_unlock(&dev->struct_mutex); - atomic_dec(&dev->buf_alloc); - return -ENOMEM; - } - memset(entry->buflist, 0, count * sizeof(*entry->buflist)); - - 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->waiting = 0; - buf->pending = 0; - init_waitqueue_head(&buf->dma_wait); - buf->file_priv = NULL; - - buf->dev_priv_size = dev->driver->dev_priv_size; - buf->dev_private = drm_alloc(buf->dev_priv_size, DRM_MEM_BUFS); - if (!buf->dev_private) { - /* Set count correctly so we free the proper amount. */ - entry->buf_count = count; - drm_cleanup_buf_error(dev, entry); - mutex_unlock(&dev->struct_mutex); - atomic_dec(&dev->buf_alloc); - return -ENOMEM; - } - memset(buf->dev_private, 0, buf->dev_priv_size); - - 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 = drm_realloc(dma->buflist, - dma->buf_count * sizeof(*dma->buflist), - (dma->buf_count + entry->buf_count) - * sizeof(*dma->buflist), DRM_MEM_BUFS); - if (!temp_buflist) { - /* Free the entry because it isn't valid */ - drm_cleanup_buf_error(dev, entry); - mutex_unlock(&dev->struct_mutex); - atomic_dec(&dev->buf_alloc); - 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->seg_count += entry->seg_count; - dma->page_count += byte_count >> PAGE_SHIFT; - 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); - - mutex_unlock(&dev->struct_mutex); - - request->count = entry->buf_count; - request->size = size; - - dma->flags = _DRM_DMA_USE_FB; - - atomic_dec(&dev->buf_alloc); - return 0; -} - - /** * Add buffers for DMA transfers (ioctl). * @@ -1355,6 +1141,9 @@ int drm_addbufs(struct drm_device *dev, void *data, struct drm_buf_desc *request = data; int ret; + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) return -EINVAL; @@ -1366,7 +1155,7 @@ int drm_addbufs(struct drm_device *dev, void *data, if (request->flags & _DRM_SG_BUFFER) ret = drm_addbufs_sg(dev, request); else if (request->flags & _DRM_FB_BUFFER) - ret = drm_addbufs_fb(dev, request); + ret = -EINVAL; else ret = drm_addbufs_pci(dev, request); @@ -1386,7 +1175,7 @@ int drm_addbufs(struct drm_device *dev, void *data, * \param arg pointer to a drm_buf_info structure. * \return zero on success or a negative number on failure. * - * Increments drm_device::buf_use while holding the drm_device::count_lock + * Increments drm_device::buf_use while holding the drm_device::buf_lock * lock, preventing of allocating more buffers after this call. Information * about each requested buffer is then copied into user space. */ @@ -1398,19 +1187,22 @@ int drm_infobufs(struct drm_device *dev, void *data, int i; int count; + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) return -EINVAL; if (!dma) return -EINVAL; - spin_lock(&dev->count_lock); + spin_lock(&dev->buf_lock); if (atomic_read(&dev->buf_alloc)) { - spin_unlock(&dev->count_lock); + spin_unlock(&dev->buf_lock); return -EBUSY; } ++dev->buf_use; /* Can't allocate more after this call */ - spin_unlock(&dev->count_lock); + spin_unlock(&dev->buf_lock); for (i = 0, count = 0; i < DRM_MAX_ORDER + 1; i++) { if (dma->bufs[i].buf_count) @@ -1477,6 +1269,9 @@ int drm_markbufs(struct drm_device *dev, void *data, int order; struct drm_buf_entry *entry; + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) return -EINVAL; @@ -1485,7 +1280,7 @@ int drm_markbufs(struct drm_device *dev, void *data, DRM_DEBUG("%d, %d, %d\n", request->size, request->low_mark, request->high_mark); - order = drm_order(request->size); + order = order_base_2(request->size); if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return -EINVAL; entry = &dma->bufs[order]; @@ -1522,6 +1317,9 @@ int drm_freebufs(struct drm_device *dev, void *data, int idx; struct drm_buf *buf; + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) return -EINVAL; @@ -1558,8 +1356,8 @@ int drm_freebufs(struct drm_device *dev, void *data, * \param arg pointer to a drm_buf_map structure. * \return zero on success or a negative number on failure. * - * Maps the AGP, SG or PCI buffer region with do_mmap(), and copies information - * about each buffer into user space. For PCI buffers, it calls do_mmap() with + * Maps the AGP, SG or PCI buffer region with vm_mmap(), and copies information + * about each buffer into user space. For PCI buffers, it calls vm_mmap() with * offset equal to 0, which drm_mmap() interpretes as PCI buffers and calls * drm_mmap_dma(). */ @@ -1574,26 +1372,27 @@ int drm_mapbufs(struct drm_device *dev, void *data, struct drm_buf_map *request = data; int i; + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) return -EINVAL; if (!dma) return -EINVAL; - spin_lock(&dev->count_lock); + spin_lock(&dev->buf_lock); if (atomic_read(&dev->buf_alloc)) { - spin_unlock(&dev->count_lock); + spin_unlock(&dev->buf_lock); return -EBUSY; } dev->buf_use++; /* Can't allocate more after this call */ - spin_unlock(&dev->count_lock); + spin_unlock(&dev->buf_lock); if (request->count >= dma->buf_count) { - if ((drm_core_has_AGP(dev) && (dma->flags & _DRM_DMA_USE_AGP)) + if ((dev->agp && (dma->flags & _DRM_DMA_USE_AGP)) || (drm_core_check_feature(dev, DRIVER_SG) - && (dma->flags & _DRM_DMA_USE_SG)) - || (drm_core_check_feature(dev, DRIVER_FB_DMA) - && (dma->flags & _DRM_DMA_USE_FB))) { + && (dma->flags & _DRM_DMA_USE_SG))) { struct drm_local_map *map = dev->agp_buffer_map; unsigned long token = dev->agp_buffer_token; @@ -1601,18 +1400,14 @@ int drm_mapbufs(struct drm_device *dev, void *data, retcode = -EINVAL; goto done; } - down_write(¤t->mm->mmap_sem); - virtual = do_mmap(file_priv->filp, 0, map->size, + virtual = vm_mmap(file_priv->filp, 0, map->size, PROT_READ | PROT_WRITE, MAP_SHARED, token); - up_write(¤t->mm->mmap_sem); } else { - down_write(¤t->mm->mmap_sem); - virtual = do_mmap(file_priv->filp, 0, dma->byte_count, + virtual = vm_mmap(file_priv->filp, 0, dma->byte_count, PROT_READ | PROT_WRITE, MAP_SHARED, 0); - up_write(¤t->mm->mmap_sem); } if (virtual > -1024UL) { /* Real error */ @@ -1654,25 +1449,28 @@ int drm_mapbufs(struct drm_device *dev, void *data, return retcode; } -/** - * Compute size order. Returns the exponent of the smaller power of two which - * is greater or equal to given number. - * - * \param size size. - * \return order. - * - * \todo Can be made faster. - */ -int drm_order(unsigned long size) +int drm_dma_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) { - int order; - unsigned long tmp; + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; - for (order = 0, tmp = size >> 1; tmp; tmp >>= 1, order++) ; + if (dev->driver->dma_ioctl) + return dev->driver->dma_ioctl(dev, data, file_priv); + else + return -EINVAL; +} - if (size & (size - 1)) - ++order; +struct drm_local_map *drm_getsarea(struct drm_device *dev) +{ + struct drm_map_list *entry; - return order; + list_for_each_entry(entry, &dev->maplist, head) { + if (entry->map && entry->map->type == _DRM_SHM && + (entry->map->flags & _DRM_CONTAINS_LOCK)) { + return entry->map; + } + } + return NULL; } -EXPORT_SYMBOL(drm_order); +EXPORT_SYMBOL(drm_getsarea); |