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authorThomas Hellstrom <thomas@tungstengraphics.com>2006-07-11 14:37:37 +0000
committerThomas Hellstrom <thomas@tungstengraphics.com>2006-07-11 14:37:37 +0000
commit126673d62afad6da84e833daa644a352d88a5e37 (patch)
tree360d6186280ab586fe748bb9bccc7db298117841 /shared-core/mga_dma.c
parenta392349691ec2aa3f83d8a9fc4a485e4dbef4bbe (diff)
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. This keeps compatibility with buggy drivers, while still implementing a hashed map lookup. The SiS and via device driver major bumps are reverted.
Diffstat (limited to 'shared-core/mga_dma.c')
0 files changed, 0 insertions, 0 deletions