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authorNikita Kiryanov <nikita@compulab.co.il>2014-11-21 12:47:23 +0200
committerStefano Babic <sbabic@denx.de>2014-11-24 11:59:59 +0100
commit10ee8ecafbb4405ac77f6df081325630617aa7cd (patch)
treedbfe0df41bb3a38f0cd2109c7272b6a3332a2876 /drivers/block/dwc_ahsata.c
parent8d29cef5887887157f54f98493440ce5c824d5cb (diff)
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sata: implement reset_sata for dwc_ahsata
Add reset_sata() to the sata driver interface and implement it for dwc_ahsata. This function cleans up after sata_init(), and therefore accepts a device number like sata_init() does. A dummy implementation is provided for the rest of the drivers. Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Cc: Simon Glass <sjg@chromium.org> Cc: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'drivers/block/dwc_ahsata.c')
-rw-r--r--drivers/block/dwc_ahsata.c21
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]);