tree 6602c6a936254ae1175073fdd3f800ed67730c17 parent f179bc77d09b9087bfc559d0368bba350342ac76 author Dave Airlie <[EMAIL PROTECTED](none)> Sun, 10 Jul 2005 14:34:13 +1000 committer Dave Airlie <[EMAIL PROTECTED]> Sun, 10 Jul 2005 14:34:13 +1000
drm: add _DRM_CONSISTENT map type Added a new DRM map type _DRM_CONSISTENT for consistent PCI memory. It uses drm_pci_alloc/free for allocating/freeing the memory. From: Felix Kuhling <[EMAIL PROTECTED]> Signed-off-by: David Airlie <[EMAIL PROTECTED]> drivers/char/drm/drm.h | 3 ++- drivers/char/drm/drm_bufs.c | 20 +++++++++++++++++++- drivers/char/drm/drm_drv.c | 4 ++++ drivers/char/drm/drm_proc.c | 13 ++++++++----- drivers/char/drm/drm_vm.c | 7 +++++++ 5 files changed, 40 insertions(+), 7 deletions(-) diff --git a/drivers/char/drm/drm.h b/drivers/char/drm/drm.h --- a/drivers/char/drm/drm.h +++ b/drivers/char/drm/drm.h @@ -209,7 +209,8 @@ typedef enum drm_map_type { _DRM_REGISTERS = 1, /**< no caching, no core dump */ _DRM_SHM = 2, /**< shared, cached */ _DRM_AGP = 3, /**< AGP/GART */ - _DRM_SCATTER_GATHER = 4 /**< Scatter/gather memory for PCI DMA */ + _DRM_SCATTER_GATHER = 4, /**< Scatter/gather memory for PCI DMA */ + _DRM_CONSISTENT = 5, /**< Consistent memory for PCI DMA */ } drm_map_type_t; diff --git a/drivers/char/drm/drm_bufs.c b/drivers/char/drm/drm_bufs.c --- a/drivers/char/drm/drm_bufs.c +++ b/drivers/char/drm/drm_bufs.c @@ -180,7 +180,22 @@ int drm_addmap( struct inode *inode, str } map->offset += dev->sg->handle; break; - + case _DRM_CONSISTENT: + { + /* dma_addr_t is 64bit on i386 with CONFIG_HIGHMEM64G, + * As we're limit the address to 2^32-1 (or lses), + * casting it down to 32 bits is no problem, but we + * need to point to a 64bit variable first. */ + dma_addr_t bus_addr; + map->handle = drm_pci_alloc(dev, map->size, map->size, + 0xffffffffUL, &bus_addr); + map->offset = (unsigned long)bus_addr; + if (!map->handle) { + drm_free(map, sizeof(*map), DRM_MEM_MAPS); + return -ENOMEM; + } + break; + } default: drm_free( map, sizeof(*map), DRM_MEM_MAPS ); return -EINVAL; @@ -291,6 +306,9 @@ int drm_rmmap(struct inode *inode, struc case _DRM_AGP: case _DRM_SCATTER_GATHER: break; + case _DRM_CONSISTENT: + drm_pci_free(dev, map->size, map->handle, map->offset); + break; } drm_free(map, sizeof(*map), DRM_MEM_MAPS); } diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c --- a/drivers/char/drm/drm_drv.c +++ b/drivers/char/drm/drm_drv.c @@ -228,6 +228,10 @@ int drm_takedown( drm_device_t *dev ) dev->sg = NULL; } break; + case _DRM_CONSISTENT: + drm_pci_free(dev, map->size, + map->handle, map->offset); + break; } drm_free(map, sizeof(*map), DRM_MEM_MAPS); } diff --git a/drivers/char/drm/drm_proc.c b/drivers/char/drm/drm_proc.c --- a/drivers/char/drm/drm_proc.c +++ b/drivers/char/drm/drm_proc.c @@ -210,8 +210,8 @@ static int drm__vm_info(char *buf, char /* Hardcoded from _DRM_FRAME_BUFFER, _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and - _DRM_SCATTER_GATHER. */ - const char *types[] = { "FB", "REG", "SHM", "AGP", "SG" }; + _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ + const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; const char *type; int i; @@ -229,9 +229,12 @@ static int drm__vm_info(char *buf, char if (dev->maplist != NULL) list_for_each(list, &dev->maplist->head) { r_list = list_entry(list, drm_map_list_t, head); map = r_list->map; - if(!map) continue; - if (map->type < 0 || map->type > 4) type = "??"; - else type = types[map->type]; + if(!map) + continue; + if (map->type < 0 || map->type > 5) + type = "??"; + else + type = types[map->type]; DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08lx ", i, map->offset, diff --git a/drivers/char/drm/drm_vm.c b/drivers/char/drm/drm_vm.c --- a/drivers/char/drm/drm_vm.c +++ b/drivers/char/drm/drm_vm.c @@ -228,6 +228,10 @@ static void drm_vm_shm_close(struct vm_a case _DRM_AGP: case _DRM_SCATTER_GATHER: break; + case _DRM_CONSISTENT: + drm_pci_free(dev, map->size, map->handle, + map->offset); + break; } drm_free(map, sizeof(*map), DRM_MEM_MAPS); } @@ -645,6 +649,9 @@ int drm_mmap(struct file *filp, struct v vma->vm_ops = &drm_vm_ops; break; case _DRM_SHM: + case _DRM_CONSISTENT: + /* Consistent memory is really like shared memory. It's only + * allocate in a different way */ vma->vm_ops = &drm_vm_shm_ops; vma->vm_private_data = (void *)map; /* Don't let this area swap. Change when - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html