diff options
| author | Tejun Heo <htejun@gmail.com> | 2007-08-06 13:36:22 +0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-10-12 22:55:30 +0400 |
| commit | 9af5c9c97dc9d599281778864c72b385f0c63341 (patch) | |
| tree | 8359986bd42c4a9a5b1993078aa9ee4c7971ac3d /drivers/ata/ahci.c | |
| parent | 640fdb504941fa2b9f6f274716fc9f97f2bf6bff (diff) | |
| download | linux-9af5c9c97dc9d599281778864c72b385f0c63341.tar.xz | |
libata-link: introduce ata_link
Introduce ata_link. It abstracts PHY and sits between ata_port and
ata_device. This new level of abstraction is necessary to support
SATA Port Multiplier, which basically adds a bunch of links (PHYs) to
a ATA host port. Fields related to command execution, spd_limit and
EH are per-link and thus moved to ata_link.
This patch only defines the host link. Multiple link handling will be
added later. Also, a lot of ap->link derefences are added but many of
them will be removed as each part is converted to deal directly with
ata_link instead of ata_port.
This patch introduces no behavior change.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index c16820325d7b..c72fa468a697 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1064,7 +1064,7 @@ static int ahci_do_softreset(struct ata_port *ap, unsigned int *class, ata_port_printk(ap, KERN_WARNING, "failed to reset engine (errno=%d)", rc); - ata_tf_init(ap->device, &tf); + ata_tf_init(ap->link.device, &tf); /* issue the first D2H Register FIS */ msecs = 0; @@ -1132,7 +1132,7 @@ static int ahci_hardreset(struct ata_port *ap, unsigned int *class, ahci_stop_engine(ap); /* clear D2H reception area to properly wait for D2H FIS */ - ata_tf_init(ap->device, &tf); + ata_tf_init(ap->link.device, &tf); tf.command = 0x80; ata_tf_to_fis(&tf, 0, 0, d2h_fis); @@ -1159,7 +1159,7 @@ static int ahci_vt8251_hardreset(struct ata_port *ap, unsigned int *class, ahci_stop_engine(ap); - rc = sata_port_hardreset(ap, sata_ehc_deb_timing(&ap->eh_context), + rc = sata_port_hardreset(ap, sata_ehc_deb_timing(&ap->link.eh_context), deadline); /* vt8251 needs SError cleared for the port to operate */ @@ -1278,7 +1278,7 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc) static void ahci_error_intr(struct ata_port *ap, u32 irq_stat) { struct ahci_port_priv *pp = ap->private_data; - struct ata_eh_info *ehi = &ap->eh_info; + struct ata_eh_info *ehi = &ap->link.eh_info; unsigned int err_mask = 0, action = 0; struct ata_queued_cmd *qc; u32 serror; @@ -1332,7 +1332,7 @@ static void ahci_error_intr(struct ata_port *ap, u32 irq_stat) ehi->serror |= serror; ehi->action |= action; - qc = ata_qc_from_tag(ap, ap->active_tag); + qc = ata_qc_from_tag(ap, ap->link.active_tag); if (qc) qc->err_mask |= err_mask; else @@ -1347,7 +1347,7 @@ static void ahci_error_intr(struct ata_port *ap, u32 irq_stat) static void ahci_port_intr(struct ata_port *ap) { void __iomem *port_mmio = ap->ioaddr.cmd_addr; - struct ata_eh_info *ehi = &ap->eh_info; + struct ata_eh_info *ehi = &ap->link.eh_info; struct ahci_port_priv *pp = ap->private_data; u32 status, qc_active; int rc, known_irq = 0; @@ -1360,7 +1360,7 @@ static void ahci_port_intr(struct ata_port *ap) return; } - if (ap->sactive) + if (ap->link.sactive) qc_active = readl(port_mmio + PORT_SCR_ACT); else qc_active = readl(port_mmio + PORT_CMD_ISSUE); @@ -1380,7 +1380,7 @@ static void ahci_port_intr(struct ata_port *ap) /* if !NCQ, ignore. No modern ATA device has broken HSM * implementation for non-NCQ commands. */ - if (!ap->sactive) + if (!ap->link.sactive) return; if (status & PORT_IRQ_D2H_REG_FIS) { @@ -1433,7 +1433,7 @@ static void ahci_port_intr(struct ata_port *ap) if (!known_irq) ata_port_printk(ap, KERN_INFO, "spurious interrupt " "(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n", - status, ap->active_tag, ap->sactive); + status, ap->link.active_tag, ap->link.sactive); } static void ahci_irq_clear(struct ata_port *ap) |