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authorThomas Hellstrom <thomas@tungstengraphics.com>2006-08-07 22:36:47 +1000
committerDave Airlie <airlied@linux.ie>2006-09-22 05:32:31 +1000
commit8d153f7107ff2c5d6e32053ae377c961187ab6b9 (patch)
treec90cdf1bf8e04237e840b37033fc0f57b74ab292 /drivers/char/drm/drmP.h
parent8669cbc5e651bf4effa20e8c244a5a7d67da6fe9 (diff)
drm: update user token hashing and map handles
Keep hashed user tokens, with the following changes: 32-bit physical device addresses are mapped directly to user-tokens. No duplicate maps are allowed, and the addresses are assumed to be outside of the range 0x10000000 through 0x30000000. The user-token is identical to the 32-bit physical start-address of the map. 64-bit physical device addressed are mapped to user-tokens in the range 0x10000000 to 0x30000000 with page-size increments. The user_token should not be interpreted as an address. Other map types, like upcoming TTM maps are mapped to user-tokens in the range 0x10000000 to 0x30000000 with page-size increments. The user_token should not be interpreted as an address. Implement hashed map lookups. Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/char/drm/drmP.h')
-rw-r--r--drivers/char/drm/drmP.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/drm/drmP.h b/drivers/char/drm/drmP.h
index fedaf013f84..84e9c18fdbe 100644
--- a/drivers/char/drm/drmP.h
+++ b/drivers/char/drm/drmP.h
@@ -140,6 +140,7 @@
#define DRM_MEM_HASHTAB 23
#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
+#define DRM_MAP_HASH_OFFSET 0x10000000
/*@}*/
@@ -485,6 +486,7 @@ typedef struct drm_sigdata {
*/
typedef struct drm_map_list {
struct list_head head; /**< list head */
+ drm_hash_item_t hash;
drm_map_t *map; /**< mapping */
unsigned int user_token;
} drm_map_list_t;
@@ -662,6 +664,7 @@ typedef struct drm_device {
/*@{ */
drm_map_list_t *maplist; /**< Linked list of regions */
int map_count; /**< Number of mappable regions */
+ drm_open_hash_t map_hash; /**< User token hash table for maps */
/** \name Context handle management */
/*@{ */