diff options
Diffstat (limited to 'drivers/block/dwc_ahsata.c')
| -rw-r--r-- | drivers/block/dwc_ahsata.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/block/dwc_ahsata.c b/drivers/block/dwc_ahsata.c index c68fd2f..9a2b547 100644 --- a/drivers/block/dwc_ahsata.c +++ b/drivers/block/dwc_ahsata.c @@ -592,6 +592,27 @@ int init_sata(int dev) return 0; } +int reset_sata(int dev) +{ + struct ahci_probe_ent *probe_ent = + (struct ahci_probe_ent *)sata_dev_desc[dev].priv; + struct sata_host_regs *host_mmio = + (struct sata_host_regs *)probe_ent->mmio_base; + + if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) { + printf("The sata index %d is out of ranges\n\r", dev); + return -1; + } + + setbits_le32(&host_mmio->ghc, SATA_HOST_GHC_HR); + while (readl(&host_mmio->ghc) & SATA_HOST_GHC_HR) + udelay(100); + + disable_sata_clock(); + + return 0; +} + static void dwc_ahsata_print_info(int dev) { block_dev_desc_t *pdev = &(sata_dev_desc[dev]); |