lkml.org 
[lkml]   [2008]   [Oct]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: SATA Cold Boot problems on >2.6.25 with NV
Hmm... this is proving to be much more difficult than I expected. :-(

Can you please try the attached patch?

Thanks.

--
tejun
---
drivers/ata/libata-core.c | 3 +-
drivers/ata/sata_nv.c | 48 +++++++++++++++++++---------------------------
2 files changed, 22 insertions(+), 29 deletions(-)
Index: tree0/drivers/ata/libata-core.c
===================================================================
--- tree0.orig/drivers/ata/libata-core.c
+++ tree0/drivers/ata/libata-core.c
@@ -1099,6 +1099,7 @@ unsigned int ata_dev_classify(const stru
* We follow the current spec and consider that 0x69/0x96
* identifies a port multiplier and 0x3c/0xc3 a SEMB device.
*/
+ printk("XXX CLASSIFY %02x:%02x:%02x\n", tf->lbal, tf->lbam, tf->lbah);
if ((tf->lbam == 0) && (tf->lbah == 0)) {
DPRINTK("found ATA device by sig\n");
return ATA_DEV_ATA;
@@ -5673,7 +5674,7 @@ int ata_host_register(struct ata_host *h

ehi->probe_mask |= ATA_ALL_DEVICES;
ehi->action |= ATA_EH_RESET | ATA_EH_LPM;
- ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
+ ehi->flags |= ATA_EHI_NO_AUTOPSY/* | ATA_EHI_QUIET*/;

ap->pflags &= ~ATA_PFLAG_INITIALIZING;
ap->pflags |= ATA_PFLAG_LOADING;
Index: tree0/drivers/ata/sata_nv.c
===================================================================
--- tree0.orig/drivers/ata/sata_nv.c
+++ tree0/drivers/ata/sata_nv.c
@@ -307,10 +307,10 @@ static int nv_scr_write(struct ata_port

static void nv_nf2_freeze(struct ata_port *ap);
static void nv_nf2_thaw(struct ata_port *ap);
+static int nv_nf2_hardreset(struct ata_link *link, unsigned int *class,
+ unsigned long deadline);
static void nv_ck804_freeze(struct ata_port *ap);
static void nv_ck804_thaw(struct ata_port *ap);
-static int nv_hardreset(struct ata_link *link, unsigned int *class,
- unsigned long deadline);
static int nv_adma_slave_config(struct scsi_device *sdev);
static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
@@ -405,17 +405,8 @@ static struct scsi_host_template nv_swnc
.slave_configure = nv_swncq_slave_config,
};

-/* OSDL bz3352 reports that some nv controllers can't determine device
- * signature reliably and nv_hardreset is implemented to work around
- * the problem. This was reported on nf3 and it's unclear whether any
- * other controllers are affected. However, the workaround has been
- * applied to all variants and there isn't much to gain by trying to
- * find out exactly which ones are affected at this point especially
- * because NV has moved over to ahci for newer controllers.
- */
static struct ata_port_operations nv_common_ops = {
.inherits = &ata_bmdma_port_ops,
- .hardreset = nv_hardreset,
.scr_read = nv_scr_read,
.scr_write = nv_scr_write,
};
@@ -429,12 +420,17 @@ static struct ata_port_operations nv_gen
.hardreset = ATA_OP_NULL,
};

+/* OSDL bz3352 reports that nf2/3 controllers can't determine device
+ * signature reliably. Use sata_std_hardreset().
+ */
static struct ata_port_operations nv_nf2_ops = {
.inherits = &nv_common_ops,
.freeze = nv_nf2_freeze,
.thaw = nv_nf2_thaw,
+ .hardreset = nv_nf2_hardreset,
};

+/* CK804 finally gets hardreset right */
static struct ata_port_operations nv_ck804_ops = {
.inherits = &nv_common_ops,
.freeze = nv_ck804_freeze,
@@ -443,7 +439,7 @@ static struct ata_port_operations nv_ck8
};

static struct ata_port_operations nv_adma_ops = {
- .inherits = &nv_common_ops,
+ .inherits = &nv_ck804_ops,

.check_atapi_dma = nv_adma_check_atapi_dma,
.sff_tf_read = nv_adma_tf_read,
@@ -467,7 +463,7 @@ static struct ata_port_operations nv_adm
};

static struct ata_port_operations nv_swncq_ops = {
- .inherits = &nv_common_ops,
+ .inherits = &nv_generic_ops,

.qc_defer = ata_std_qc_defer,
.qc_prep = nv_swncq_qc_prep,
@@ -1553,6 +1549,17 @@ static void nv_nf2_thaw(struct ata_port
iowrite8(mask, scr_addr + NV_INT_ENABLE);
}

+static int nv_nf2_hardreset(struct ata_link *link, unsigned int *class,
+ unsigned long deadline)
+{
+ bool online;
+ int rc;
+
+ rc = sata_link_hardreset(link, sata_deb_timing_hotplug, deadline,
+ &online, NULL);
+ return online ? -EAGAIN : rc;
+}
+
static void nv_ck804_freeze(struct ata_port *ap)
{
void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
@@ -1605,21 +1612,6 @@ static void nv_mcp55_thaw(struct ata_por
ata_sff_thaw(ap);
}

-static int nv_hardreset(struct ata_link *link, unsigned int *class,
- unsigned long deadline)
-{
- int rc;
-
- /* SATA hardreset fails to retrieve proper device signature on
- * some controllers. Request follow up SRST. For more info,
- * see http://bugzilla.kernel.org/show_bug.cgi?id=3352
- */
- rc = sata_sff_hardreset(link, class, deadline);
- if (rc)
- return rc;
- return -EAGAIN;
-}
-
static void nv_adma_error_handler(struct ata_port *ap)
{
struct nv_adma_port_priv *pp = ap->private_data;
\
 
 \ /
  Last update: 2008-10-15 08:19    [W:0.196 / U:0.436 seconds]
©2003-2014 Jasper Spaans. Advertise on this site