summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorPadmanabh Ratnakar <padmanabh.ratnakar@emulex.com>2011-03-07 06:08:36 +0300
committerDavid S. Miller <davem@davemloft.net>2011-03-08 02:26:56 +0300
commit37eed1cbbd446dc2808e1bff717010aa978fc0de (patch)
tree64e4eb4fc3fbe037610d1ba4b9bc349c636dce18 /drivers
parent19fad86f3b34f52eebc511f6cdb99e82f53aee94 (diff)
downloadlinux-37eed1cbbd446dc2808e1bff717010aa978fc0de.tar.xz
be2net: Add error recovery during load for Lancer
Add error recovery during load for Lancer Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com> Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: Subramanian Seetharaman <subbu.seetharaman@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/benet/be_hw.h12
-rw-r--r--drivers/net/benet/be_main.c56
2 files changed, 68 insertions, 0 deletions
diff --git a/drivers/net/benet/be_hw.h b/drivers/net/benet/be_hw.h
index 3f459f76cd1d..dbe67f353e8f 100644
--- a/drivers/net/benet/be_hw.h
+++ b/drivers/net/benet/be_hw.h
@@ -44,6 +44,18 @@
#define POST_STAGE_BE_RESET 0x3 /* Host wants to reset chip */
#define POST_STAGE_ARMFW_RDY 0xc000 /* FW is done with POST */
+
+/* Lancer SLIPORT_CONTROL SLIPORT_STATUS registers */
+#define SLIPORT_STATUS_OFFSET 0x404
+#define SLIPORT_CONTROL_OFFSET 0x408
+
+#define SLIPORT_STATUS_ERR_MASK 0x80000000
+#define SLIPORT_STATUS_RN_MASK 0x01000000
+#define SLIPORT_STATUS_RDY_MASK 0x00800000
+
+
+#define SLI_PORT_CONTROL_IP_MASK 0x08000000
+
/********* Memory BAR register ************/
#define PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET 0xfc
/* Host Interrupt Enable, if set interrupts are enabled although "PCI Interrupt
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index ac7ae21bd0d1..665a9b7310f6 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -2901,6 +2901,54 @@ static int be_dev_family_check(struct be_adapter *adapter)
return 0;
}
+static int lancer_wait_ready(struct be_adapter *adapter)
+{
+#define SLIPORT_READY_TIMEOUT 500
+ u32 sliport_status;
+ int status = 0, i;
+
+ for (i = 0; i < SLIPORT_READY_TIMEOUT; i++) {
+ sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
+ if (sliport_status & SLIPORT_STATUS_RDY_MASK)
+ break;
+
+ msleep(20);
+ }
+
+ if (i == SLIPORT_READY_TIMEOUT)
+ status = -1;
+
+ return status;
+}
+
+static int lancer_test_and_set_rdy_state(struct be_adapter *adapter)
+{
+ int status;
+ u32 sliport_status, err, reset_needed;
+ status = lancer_wait_ready(adapter);
+ if (!status) {
+ sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
+ err = sliport_status & SLIPORT_STATUS_ERR_MASK;
+ reset_needed = sliport_status & SLIPORT_STATUS_RN_MASK;
+ if (err && reset_needed) {
+ iowrite32(SLI_PORT_CONTROL_IP_MASK,
+ adapter->db + SLIPORT_CONTROL_OFFSET);
+
+ /* check adapter has corrected the error */
+ status = lancer_wait_ready(adapter);
+ sliport_status = ioread32(adapter->db +
+ SLIPORT_STATUS_OFFSET);
+ sliport_status &= (SLIPORT_STATUS_ERR_MASK |
+ SLIPORT_STATUS_RN_MASK);
+ if (status || sliport_status)
+ status = -1;
+ } else if (err || reset_needed) {
+ status = -1;
+ }
+ }
+ return status;
+}
+
static int __devinit be_probe(struct pci_dev *pdev,
const struct pci_device_id *pdev_id)
{
@@ -2950,6 +2998,14 @@ static int __devinit be_probe(struct pci_dev *pdev,
if (status)
goto free_netdev;
+ if (lancer_chip(adapter)) {
+ status = lancer_test_and_set_rdy_state(adapter);
+ if (status) {
+ dev_err(&pdev->dev, "Adapter in non recoverable error\n");
+ goto free_netdev;
+ }
+ }
+
/* sync up with fw's ready state */
if (be_physfn(adapter)) {
status = be_cmd_POST(adapter);