diff options
| author | Thomas Hellstrom <thomas@tungstengraphics.com> | 2006-08-07 22:36:47 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@linux.ie> | 2006-09-22 05:32:31 +1000 |
| commit | 8d153f7107ff2c5d6e32053ae377c961187ab6b9 (patch) | |
| tree | c90cdf1bf8e04237e840b37033fc0f57b74ab292 /drivers/char/drm/drm_stub.c | |
| parent | 8669cbc5e651bf4effa20e8c244a5a7d67da6fe9 (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/drm_stub.c')
| -rw-r--r-- | drivers/char/drm/drm_stub.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/char/drm/drm_stub.c b/drivers/char/drm/drm_stub.c index b1ead37c51d6..a9bb18ac3a2b 100644 --- a/drivers/char/drm/drm_stub.c +++ b/drivers/char/drm/drm_stub.c @@ -75,6 +75,10 @@ static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev, if (dev->maplist == NULL) return -ENOMEM; INIT_LIST_HEAD(&dev->maplist->head); + if (drm_ht_create(&dev->map_hash, 12)) { + drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS); + return -ENOMEM; + } /* the DRM has 6 basic counters */ dev->counters = 6; |