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| author | Torne Wuff <torne@wolfpuppy.org.uk> | 2010-01-31 11:07:29 +0000 |
|---|---|---|
| committer | Torne Wuff <torne@wolfpuppy.org.uk> | 2010-01-31 11:07:29 +0000 |
| commit | 533cf7737bae4363edefbfb202cb44e9eb30cd3f (patch) | |
| tree | abfb69b76b46fc8d22c14023969ba3fcaad4809d /firmware/export/config/ipod4g.h | |
| parent | c0e2d9fe1bb87730d9a8a7cac3cb8f6cd39ce630 (diff) | |
| download | rockbox-533cf7737bae4363edefbfb202cb44e9eb30cd3f.tar.gz rockbox-533cf7737bae4363edefbfb202cb44e9eb30cd3f.zip | |
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
Diffstat (limited to 'firmware/export/config/ipod4g.h')
| -rw-r--r-- | firmware/export/config/ipod4g.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/firmware/export/config/ipod4g.h b/firmware/export/config/ipod4g.h index e6bdc35bd8..cd71434c10 100644 --- a/firmware/export/config/ipod4g.h +++ b/firmware/export/config/ipod4g.h | |||
| @@ -207,3 +207,8 @@ | |||
| 207 | 207 | ||
| 208 | #define IRAM_LCDFRAMEBUFFER IBSS_ATTR /* put the lcd frame buffer in IRAM */ | 208 | #define IRAM_LCDFRAMEBUFFER IBSS_ATTR /* put the lcd frame buffer in IRAM */ |
| 209 | 209 | ||
| 210 | |||
| 211 | /* DMA is used only for reading on PP502x because although reads are ~8x faster | ||
| 212 | * writes appear to be ~25% slower. | ||
| 213 | */ | ||
| 214 | #define HAVE_ATA_DMA | ||