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| author | Rob Herring <rob.herring@calxeda.com> | 2013-08-24 10:10:52 -0500 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-09-06 13:09:07 -0400 |
| commit | 178210847f7d8492c6aa1d39867d99538be0e7d4 (patch) | |
| tree | c369bf725c306fa4e9156b73fa73d10725cf2b27 /drivers/block/ahci.c | |
| parent | 124e9fa132338c32409bd556c9c0a47a2bb70cc2 (diff) | |
| download | talos-obmc-uboot-178210847f7d8492c6aa1d39867d99538be0e7d4.tar.gz talos-obmc-uboot-178210847f7d8492c6aa1d39867d99538be0e7d4.zip | |
ahci: handle COMINIT received during spin-up
Some Intel SSDs can send a COMINIT after the initial COMRESET. This causes
the link to go down and we need to re-initialize the link.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Diffstat (limited to 'drivers/block/ahci.c')
| -rw-r--r-- | drivers/block/ahci.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c index 5e7d01ba61..a7044f2ea7 100644 --- a/drivers/block/ahci.c +++ b/drivers/block/ahci.c @@ -243,8 +243,20 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent) if (!(tmp & (ATA_STAT_BUSY | ATA_STAT_DRQ))) break; udelay(1000); + tmp = readl(port_mmio + PORT_SCR_STAT); + tmp &= PORT_SCR_STAT_DET_MASK; + if (tmp == PORT_SCR_STAT_DET_PHYRDY) + break; j++; } + + tmp = readl(port_mmio + PORT_SCR_STAT) & PORT_SCR_STAT_DET_MASK; + if (tmp == PORT_SCR_STAT_DET_COMINIT) { + debug("SATA link %d down (COMINIT received), retrying...\n", i); + i--; + continue; + } + printf("Target spinup took %d ms.\n", j); if (j == WAIT_MS_SPINUP) debug("timeout.\n"); |
