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author | Tejun Heo <htejun@gmail.com> | 2008-04-07 22:47:19 +0900 |
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committer | Jeff Garzik <jgarzik@redhat.com> | 2008-04-17 15:44:22 -0400 |
commit | 9dadd45b24145d6aee2fabb28d7aef972301892b (patch) | |
tree | c97c323e2edd400bc94eaceddf20f84e9a6da005 /drivers/ata/ahci.c | |
parent | a89611e8489ac24f371c9fd6fef6605b170b16ba (diff) | |
download | linux-stable-9dadd45b24145d6aee2fabb28d7aef972301892b.tar.gz linux-stable-9dadd45b24145d6aee2fabb28d7aef972301892b.tar.bz2 linux-stable-9dadd45b24145d6aee2fabb28d7aef972301892b.zip |
libata: move generic hardreset code from sata_sff_hardreset() to sata_link_hardreset()
sata_sff_hardreset() contains link readiness wait logic which isn't
SFF specific. Move that part into sata_link_hardreset(), which now
takes two more parameters - @online and @check_ready. Both are
optional. The former is out parameter for link onlineness after
reset. The latter is used to wait for link readiness after hardreset.
Users of sata_link_hardreset() is updated to use new funtionality and
ahci_hardreset() is updated to use sata_link_hardreset() instead of
sata_sff_hardreset(). This doesn't really cause any behavior change.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'drivers/ata/ahci.c')
-rw-r--r-- | drivers/ata/ahci.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 7e251a2cbda5..0f553aaa6f79 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1343,10 +1343,12 @@ static int ahci_softreset(struct ata_link *link, unsigned int *class, static int ahci_hardreset(struct ata_link *link, unsigned int *class, unsigned long deadline) { + const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context); struct ata_port *ap = link->ap; struct ahci_port_priv *pp = ap->private_data; u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; struct ata_taskfile tf; + bool online; int rc; DPRINTK("ENTER\n"); @@ -1358,14 +1360,14 @@ static int ahci_hardreset(struct ata_link *link, unsigned int *class, tf.command = 0x80; ata_tf_to_fis(&tf, 0, 0, d2h_fis); - rc = sata_sff_hardreset(link, class, deadline); + rc = sata_link_hardreset(link, timing, deadline, &online, + ahci_check_ready); ahci_start_engine(ap); - if (rc == 0 && ata_link_online(link)) + *class = ATA_DEV_NONE; + if (online) *class = ahci_dev_classify(ap); - if (rc != -EAGAIN && *class == ATA_DEV_UNKNOWN) - *class = ATA_DEV_NONE; DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class); return rc; @@ -1376,6 +1378,7 @@ static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class, { struct ata_port *ap = link->ap; u32 serror; + bool online; int rc; DPRINTK("ENTER\n"); @@ -1383,7 +1386,7 @@ static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class, ahci_stop_engine(ap); rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context), - deadline); + deadline, &online, NULL); /* vt8251 needs SError cleared for the port to operate */ ahci_scr_read(ap, SCR_ERROR, &serror); @@ -1396,7 +1399,8 @@ static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class, /* vt8251 doesn't clear BSY on signature FIS reception, * request follow-up softreset. */ - return rc ?: -EAGAIN; + *class = ATA_DEV_NONE; + return online ? -EAGAIN : rc; } static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class, @@ -1406,6 +1410,7 @@ static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class, struct ahci_port_priv *pp = ap->private_data; u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; struct ata_taskfile tf; + bool online; int rc; ahci_stop_engine(ap); @@ -1416,13 +1421,10 @@ static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class, ata_tf_to_fis(&tf, 0, 0, d2h_fis); rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context), - deadline); + deadline, &online, NULL); ahci_start_engine(ap); - if (rc || ata_link_offline(link)) - return rc; - /* The pseudo configuration device on SIMG4726 attached to * ASUS P5W-DH Deluxe doesn't send signature FIS after * hardreset if no device is attached to the first downstream @@ -1436,11 +1438,14 @@ static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class, * have to be reset again. For most cases, this should * suffice while making probing snappish enough. */ - rc = ata_wait_after_reset(link, jiffies + 2 * HZ, ahci_check_ready); - if (rc) - ahci_kick_engine(ap, 0); - - return 0; + if (online) { + rc = ata_wait_after_reset(link, jiffies + 2 * HZ, + ahci_check_ready); + if (rc) + ahci_kick_engine(ap, 0); + } + *class = ATA_DEV_NONE; + return rc; } static void ahci_postreset(struct ata_link *link, unsigned int *class) |