Driver periodically checks adapter state,is up fine or not.
Based on the value updates the internal structures of driver.
Signed-off-by: John Soni Jose <sony.john-n@xxxxxxxxxx>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@xxxxxxxxxx>
---
drivers/scsi/be2iscsi/be_cmds.c | 10 +++-
drivers/scsi/be2iscsi/be_main.c | 26 ++++++++
drivers/scsi/be2iscsi/be_main.h | 5 ++
drivers/scsi/be2iscsi/be_mgmt.c | 132 +++++++++++++++++++++++++++++++++++++++
drivers/scsi/be2iscsi/be_mgmt.h | 7 ++
5 files changed, 178 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c
index 352fc53..5c87768 100644
--- a/drivers/scsi/be2iscsi/be_cmds.c
+++ b/drivers/scsi/be2iscsi/be_cmds.c
@@ -157,6 +157,9 @@ int beiscsi_mccq_compl(struct beiscsi_hba *phba,
struct be_cmd_req_hdr *ioctl_hdr;
struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
+ if (beiscsi_error(phba))
+ return -EIO;
+
/* wait for the mccq completion */
rc = wait_event_interruptible_timeout(
phba->ctrl.mcc_wait[tag],
@@ -423,7 +426,7 @@ static int be_mcc_wait_compl(struct beiscsi_hba *phba)
{
int i, status;
for (i = 0; i < mcc_timeout; i++) {
- if (phba->fw_timeout)
+ if (beiscsi_error(phba))
return -EIO;
status = beiscsi_process_mcc(phba);
@@ -439,6 +442,7 @@ static int be_mcc_wait_compl(struct beiscsi_hba *phba)
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : FW Timed Out\n");
phba->fw_timeout = true;
+ beiscsi_ue_detect(phba);
return -EBUSY;
}
return 0;
@@ -479,7 +483,8 @@ static int be_mbox_db_ready_wait(struct be_ctrl_info *ctrl)
u32 ready;
do {
- if (phba->fw_timeout)
+
+ if (beiscsi_error(phba))
return -EIO;
ready = ioread32(db) & MPU_MAILBOX_DB_RDY_MASK;
@@ -491,6 +496,7 @@ static int be_mbox_db_ready_wait(struct be_ctrl_info *ctrl)
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : FW Timed Out\n");
phba->fw_timeout = true;
+ beiscsi_ue_detect(phba);
return -EBUSY;
}
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 73a29b2..48d37dd 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -4717,6 +4717,8 @@ static void beiscsi_quiesce(struct beiscsi_hba *phba)
phba->ctrl.mbox_mem_alloced.size,
phba->ctrl.mbox_mem_alloced.va,
phba->ctrl.mbox_mem_alloced.dma);
+
+ cancel_delayed_work_sync(&phba->beiscsi_hw_check_task);
}
static void beiscsi_remove(struct pci_dev *pcidev)
@@ -4769,6 +4771,25 @@ static void beiscsi_msix_enable(struct beiscsi_hba *phba)
return;
}
+/*
+ * beiscsi_hw_health_check()- Check adapter health
+ * @work: work item to check HW health
+ *
+ * Check if adapter in an unrecoverable state or not.
+ **/
+static void
+beiscsi_hw_health_check(struct work_struct *work)
+{
+ struct beiscsi_hba *phba =
+ container_of(work, struct beiscsi_hba,
+ beiscsi_hw_check_task.work);
+
+ beiscsi_ue_detect(phba);
+
+ schedule_delayed_work(&phba->beiscsi_hw_check_task,
+ msecs_to_jiffies(1000));
+}
+
static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev,
const struct pci_device_id *id)
{
@@ -4892,6 +4913,8 @@ static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev,
goto free_twq;
}
+ INIT_DELAYED_WORK(&phba->beiscsi_hw_check_task,
+ beiscsi_hw_health_check);
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
@@ -4941,6 +4964,9 @@ static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev,
"iSCSI boot info.\n");
beiscsi_create_def_ifaces(phba);
+ schedule_delayed_work(&phba->beiscsi_hw_check_task,
+ msecs_to_jiffies(1000));
+
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"\n\n\n BM_%d : SUCCESS - DRIVER LOADED\n\n\n");
return 0;
diff --git a/drivers/scsi/be2iscsi/be_main.h b/drivers/scsi/be2iscsi/be_main.h
index 033c053..5b27275 100644
--- a/drivers/scsi/be2iscsi/be_main.h
+++ b/drivers/scsi/be2iscsi/be_main.h
@@ -750,6 +750,11 @@ free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle);
void beiscsi_process_all_cqs(struct work_struct *work);
+static inline bool beiscsi_error(struct beiscsi_hba *phba)
+{
+ return phba->ue_detected || phba->fw_timeout;
+}
+
struct pdu_nop_out {
u32 dw[12];
};
diff --git a/drivers/scsi/be2iscsi/be_mgmt.c b/drivers/scsi/be2iscsi/be_mgmt.c
index 688bf64..a6c2fe4 100644
--- a/drivers/scsi/be2iscsi/be_mgmt.c
+++ b/drivers/scsi/be2iscsi/be_mgmt.c
@@ -22,6 +22,138 @@
#include <scsi/scsi_bsg_iscsi.h>
#include "be_mgmt.h"
#include "be_iscsi.h"
+#include "be_main.h"
+
+/* UE Status Low CSR */
+static const char * const desc_ue_status_low[] = {
+ "CEV",
+ "CTX",
+ "DBUF",
+ "ERX",
+ "Host",
+ "MPU",
+ "NDMA",
+ "PTC ",
+ "RDMA ",
+ "RXF ",
+ "RXIPS ",
+ "RXULP0 ",
+ "RXULP1 ",
+ "RXULP2 ",
+ "TIM ",
+ "TPOST ",
+ "TPRE ",
+ "TXIPS ",
+ "TXULP0 ",
+ "TXULP1 ",
+ "UC ",
+ "WDMA ",
+ "TXULP2 ",
+ "HOST1 ",
+ "P0_OB_LINK ",
+ "P1_OB_LINK ",
+ "HOST_GPIO ",
+ "MBOX ",
+ "AXGMAC0",
+ "AXGMAC1",
+ "JTAG",
+ "MPU_INTPEND"
+};
+
+/* UE Status High CSR */
+static const char * const desc_ue_status_hi[] = {
+ "LPCMEMHOST",
+ "MGMT_MAC",
+ "PCS0ONLINE",
+ "MPU_IRAM",
+ "PCS1ONLINE",
+ "PCTL0",
+ "PCTL1",
+ "PMEM",
+ "RR",
+ "TXPB",
+ "RXPP",
+ "XAUI",
+ "TXP",
+ "ARM",
+ "IPC",
+ "HOST2",
+ "HOST3",
+ "HOST4",
+ "HOST5",
+ "HOST6",
+ "HOST7",
+ "HOST8",
+ "HOST9",
+ "NETC",
+ "Unknown",
+ "Unknown",
+ "Unknown",
+ "Unknown",
+ "Unknown",
+ "Unknown",
+ "Unknown",
+ "Unknown"
+};
+
+/*
+ * beiscsi_ue_detec()- Detect Unrecoverable Error on adapter
+ * @phba: Driver priv structure
+ *
+ * Read registers linked to UE and check for the UE status
+ **/
+void beiscsi_ue_detect(struct beiscsi_hba *phba)
+{
+ uint32_t ue_hi = 0, ue_lo = 0;
+ uint32_t ue_mask_hi = 0, ue_mask_lo = 0;
+ uint8_t i = 0;
+
+ if (phba->ue_detected)
+ return;
+
+ pci_read_config_dword(phba->pcidev,
+ PCICFG_UE_STATUS_LOW, &ue_lo);
+ pci_read_config_dword(phba->pcidev,
+ PCICFG_UE_STATUS_MASK_LOW,
+ &ue_mask_lo);
+ pci_read_config_dword(phba->pcidev,
+ PCICFG_UE_STATUS_HIGH,
+ &ue_hi);
+ pci_read_config_dword(phba->pcidev,
+ PCICFG_UE_STATUS_MASK_HI,
+ &ue_mask_hi);
+
+ ue_lo = (ue_lo & ~ue_mask_lo);
+ ue_hi = (ue_hi & ~ue_mask_hi);
+
+
+ if (ue_lo || ue_hi) {
+ phba->ue_detected = true;
+ beiscsi_log(phba, KERN_ERR,
+ BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+ "BG_%d : Error detected on the adapter\n");
+ }
+
+ if (ue_lo) {
+ for (i = 0; ue_lo; ue_lo >>= 1, i++) {
+ if (ue_lo & 1)
+ beiscsi_log(phba, KERN_ERR,
+ BEISCSI_LOG_CONFIG,
+ "BG_%d : UE_LOW %s bit set\n",
+ desc_ue_status_low[i]);
+ }
+ }
+
+ if (ue_hi) {
+ for (i = 0; ue_hi; ue_hi >>= 1, i++) {
+ if (ue_hi & 1)
+ beiscsi_log(phba, KERN_ERR,
+ BEISCSI_LOG_CONFIG,
+ "BG_%d : UE_HIGH %s bit set\n",
+ desc_ue_status_hi[i]);
+ }
+ }
+}
/**
* mgmt_reopen_session()- Reopen a session based on reopen_type
diff --git a/drivers/scsi/be2iscsi/be_mgmt.h b/drivers/scsi/be2iscsi/be_mgmt.h
index 88a8ed2..2e4968a 100644
--- a/drivers/scsi/be2iscsi/be_mgmt.h
+++ b/drivers/scsi/be2iscsi/be_mgmt.h
@@ -30,6 +30,12 @@
#define IP_V6_LEN 16
#define IP_V4_LEN 4
+/* UE Status and Mask register */
+#define PCICFG_UE_STATUS_LOW 0xA0
+#define PCICFG_UE_STATUS_HIGH 0xA4
+#define PCICFG_UE_STATUS_MASK_LOW 0xA8
+#define PCICFG_UE_STATUS_MASK_HI 0xAC
+
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
@@ -314,5 +320,6 @@ void beiscsi_offload_cxn_v0(struct beiscsi_offload_params *params,
void beiscsi_offload_cxn_v2(struct beiscsi_offload_params *params,
struct wrb_handle *pwrb_handle);
+void beiscsi_ue_detect(struct beiscsi_hba *phba);
#endif
--
1.7.2
--
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