| commit | 12b15bea2d44f95c43b9ad594f3d690038e18fef | |
| author | torne <torne@a1c6a512-1295-4272-9138-f99709370657> | |
| Sun, 31 Jan 2010 11:07:29 +0000 (31 11:07 +0000) | ||
| committer | torne <torne@a1c6a512-1295-4272-9138-f99709370657> | |
| Sun, 31 Jan 2010 11:07:29 +0000 (31 11:07 +0000) | ||
| tree | abfb69b76b46fc8d22c14023969ba3fcaad4809d | treesnapshot (tar.gz zip) |
| parent | 672f69cc35ad76324c2cf5d93fa98a9fdcba5fa5 | commitdiff |
Enable ATA DMA on pp5020 based players with ATA drives.
DMA is only used for reading because writing seems to be slower with DMA.
Only requests which are cacheline aligned (16 bytes) will use DMA, so many
requests will still use PIO at this point; a later change will align more
reads.
Part of FS#9708, original DMA code by Boris Gjenero (dreamlayers).
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24405 a1c6a512-1295-4272-9138-f99709370657
DMA is only used for reading because writing seems to be slower with DMA.
Only requests which are cacheline aligned (16 bytes) will use DMA, so many
requests will still use PIO at this point; a later change will align more
reads.
Part of FS#9708, original DMA code by Boris Gjenero (dreamlayers).
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24405 a1c6a512-1295-4272-9138-f99709370657
16 files changed: