diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2016-02-20 15:20:15 +0100 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2016-02-29 11:23:09 -0500 |
| commit | 3f478b9fcffe1810532192be9d1781f03999776d (patch) | |
| tree | 63ce3d4c6b023ee2872f63ef83a8196e6ae718c5 /src/hw/ata.h | |
| parent | 937840347a3da3f90ecf94393ef01e9300574340 (diff) | |
| download | seabios-3f478b9fcffe1810532192be9d1781f03999776d.tar.gz | |
ahci: set transfer mode according to the capabilities of connected drive
Use case: cf cards behind sata-ide bridge, which might not support
the default transfer mode.
Based on a patch by Werner Zeh <werner.zeh@siemens.com>,
with some minor tweaks applied.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'src/hw/ata.h')
| -rw-r--r-- | src/hw/ata.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/hw/ata.h b/src/hw/ata.h index cd14e59e..9de24906 100644 --- a/src/hw/ata.h +++ b/src/hw/ata.h @@ -155,4 +155,9 @@ void ata_setup(void); #define ATA_CMD_READ_NATIVE_MAX_ADDRESS 0xF8 #define ATA_CMD_SET_MAX 0xF9 +#define ATA_SET_FEATRUE_TRANSFER_MODE 0x03 +#define ATA_TRANSFER_MODE_ULTRA_DMA 0x40 +#define ATA_TRANSFER_MODE_MULTIWORD_DMA 0x20 +#define ATA_TRANSFER_MODE_PIO_FLOW_CTRL 0x08 +#define ATA_TRANSFER_MODE_DEFAULT_PIO 0x00 #endif // ata.h |