be2net: implement EEH pci error recovery handlers
The code has been tested on IBM pSeries server.
Signed-off-by: Sathya Perla <sathyap@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c
index d1a0e5e..3397ee3 100644
--- a/drivers/net/benet/be_cmds.c
+++ b/drivers/net/benet/be_cmds.c
@@ -167,7 +167,14 @@
u32 ready;
do {
- ready = ioread32(db) & MPU_MAILBOX_DB_RDY_MASK;
+ ready = ioread32(db);
+ if (ready == 0xffffffff) {
+ dev_err(&adapter->pdev->dev,
+ "pci slot disconnected\n");
+ return -1;
+ }
+
+ ready &= MPU_MAILBOX_DB_RDY_MASK;
if (ready)
break;
@@ -198,6 +205,11 @@
struct be_mcc_mailbox *mbox = mbox_mem->va;
struct be_mcc_compl *compl = &mbox->compl;
+ /* wait for ready to be set */
+ status = be_mbox_db_ready_wait(adapter, db);
+ if (status != 0)
+ return status;
+
val |= MPU_MAILBOX_DB_HI_MASK;
/* at bits 2 - 31 place mbox dma addr msb bits 34 - 63 */
val |= (upper_32_bits(mbox_mem->dma) >> 2) << 2;
@@ -396,6 +408,9 @@
u8 *wrb;
int status;
+ if (adapter->eeh_err)
+ return -EIO;
+
spin_lock(&adapter->mbox_lock);
wrb = (u8 *)wrb_from_mbox(adapter);
@@ -768,6 +783,9 @@
u8 subsys = 0, opcode = 0;
int status;
+ if (adapter->eeh_err)
+ return -EIO;
+
spin_lock(&adapter->mbox_lock);
wrb = wrb_from_mbox(adapter);
@@ -856,6 +874,9 @@
struct be_cmd_req_if_destroy *req;
int status;
+ if (adapter->eeh_err)
+ return -EIO;
+
spin_lock(&adapter->mbox_lock);
wrb = wrb_from_mbox(adapter);