diff options
Diffstat (limited to 'drivers/scsi/sata_sil24.c')
| -rw-r--r-- | drivers/scsi/sata_sil24.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c index c535607e995a..8199527966eb 100644 --- a/drivers/scsi/sata_sil24.c +++ b/drivers/scsi/sata_sil24.c @@ -437,6 +437,22 @@ static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf) *tf = pp->tf; } +static int sil24_init_port(struct ata_port *ap) +{ + void __iomem *port = (void __iomem *)ap->ioaddr.cmd_addr; + u32 tmp; + + writel(PORT_CS_INIT, port + PORT_CTRL_STAT); + ata_wait_register(port + PORT_CTRL_STAT, + PORT_CS_INIT, PORT_CS_INIT, 10, 100); + tmp = ata_wait_register(port + PORT_CTRL_STAT, + PORT_CS_RDY, 0, 10, 100); + + if ((tmp & (PORT_CS_INIT | PORT_CS_RDY)) != PORT_CS_RDY) + return -EIO; + return 0; +} + static int sil24_softreset(struct ata_port *ap, unsigned int *class) { void __iomem *port = (void __iomem *)ap->ioaddr.cmd_addr; |