From: Deepak Ukey <Deepak.Ukey@xxxxxxxxxxxxx>
Added the functionality to collect non fatal dump.
Signed-off-by: Deepak Ukey <deepak.ukey@xxxxxxxxxxxxx>
Signed-off-by: Viswas G <Viswas.G@xxxxxxxxxxxxx>
Signed-off-by: Vishakha Channapattan <vishakhavc@xxxxxxxxxx>
Signed-off-by: Bhavesh Jashnani <bjashnani@xxxxxxxxxx>
Signed-off-by: Radha Ramachandran <radha@xxxxxxxxxx>
Signed-off-by: Akshat Jain <akshatzen@xxxxxxxxxx>
Signed-off-by: Yu Zheng <yuuzheng@xxxxxxxxxx>
---
drivers/scsi/pm8001/pm8001_ctl.c | 45 +++++++++++++
drivers/scsi/pm8001/pm8001_init.c | 1 +
drivers/scsi/pm8001/pm8001_sas.h | 4 ++
drivers/scsi/pm8001/pm80xx_hwi.c | 130 ++++++++++++++++++++++++++++++++++++++
4 files changed, 180 insertions(+)
diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c
index 3e59b2a7185a..669c60a8d123 100644
--- a/drivers/scsi/pm8001/pm8001_ctl.c
+++ b/drivers/scsi/pm8001/pm8001_ctl.c
@@ -577,6 +577,49 @@ static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
+/**
+ ** non_fatal_log_show - non fatal error logging
+ ** @cdev:pointer to embedded class device
+ ** @buf: the buffer returned
+ **
+ ** A sysfs 'read-only' shost attribute.
+ **/
+static ssize_t non_fatal_log_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ u32 count;
+
+ count = pm80xx_get_non_fatal_dump(cdev, attr, buf);
+ return count;
+}
+static DEVICE_ATTR_RO(non_fatal_log);
+
+static ssize_t non_fatal_count_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+ struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+ return snprintf(buf, PAGE_SIZE, "%08x",
+ pm8001_ha->non_fatal_count);
+}
+
+static ssize_t non_fatal_count_store(struct device *cdev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+ struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+ int val = 0;
+
+ if (kstrtoint(buf, 16, &val) != 0)
+ return -EINVAL;
+
+ pm8001_ha->non_fatal_count = val;
+ return strlen(buf);
+}
+static DEVICE_ATTR_RW(non_fatal_count);
/**
** pm8001_ctl_gsm_log_show - gsm dump collection
@@ -853,6 +896,8 @@ struct device_attribute *pm8001_host_attrs[] = {
&dev_attr_aap_log,
&dev_attr_iop_log,
&dev_attr_fatal_log,
+ &dev_attr_non_fatal_log,
+ &dev_attr_non_fatal_count,
&dev_attr_gsm_log,
&dev_attr_max_out_io,
&dev_attr_max_devices,
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index c8414f1b9652..b74282bc1ed0 100644
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -484,6 +484,7 @@ static struct pm8001_hba_info *pm8001_pci_alloc(struct pci_dev *pdev,
pm8001_ha->shost = shost;
pm8001_ha->id = pm8001_id++;
pm8001_ha->logging_level = logging_level;
+ pm8001_ha->non_fatal_count = 0;
if (link_rate >= 1 && link_rate <= 15)
pm8001_ha->link_rate = (link_rate << 8);
else {
diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h
index f95f4d714983..47607a25f819 100644
--- a/drivers/scsi/pm8001/pm8001_sas.h
+++ b/drivers/scsi/pm8001/pm8001_sas.h
@@ -601,6 +601,8 @@ struct pm8001_hba_info {
struct sgpio_ioctl_resp sgpio_resp;
struct phy_prof_resp phy_profile_resp;
u32 reset_in_progress;
+ u32 non_fatal_count;
+ u32 non_fatal_read_length;
};
struct pm8001_work {
@@ -790,6 +792,8 @@ void pm8001_set_phy_profile_single(struct pm8001_hba_info *pm8001_ha,
int pm80xx_bar4_shift(struct pm8001_hba_info *pm8001_ha, u32 shiftValue);
ssize_t pm80xx_get_fatal_dump(struct device *cdev,
struct device_attribute *attr, char *buf);
+ssize_t pm80xx_get_non_fatal_dump(struct device *cdev,
+ struct device_attribute *attr, char *buf);
ssize_t pm8001_get_gsm_dump(struct device *cdev, u32, char *buf);
/* ctl shared API */
extern struct device_attribute *pm8001_host_attrs[];
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index bbcdcff5d25b..4923660304aa 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -393,6 +393,136 @@ ssize_t pm80xx_get_fatal_dump(struct device *cdev,
(char *)buf;
}
+/* pm80xx_get_non_fatal_dump - dump the nonfatal data from the dma
+ * location by the firmware.
+ */
+ssize_t pm80xx_get_non_fatal_dump(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+ struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+ void __iomem *nonfatal_table_address = pm8001_ha->fatal_tbl_addr;
+ u32 accum_len = 0;
+ u32 total_len = 0;
+ u32 reg_val = 0;
+ u32 *temp = NULL;
+ u32 index = 0;
+ u32 output_length;
+ unsigned long start = 0;
+ char *buf_copy = buf;
+
+ temp = (u32 *)pm8001_ha->memoryMap.region[FORENSIC_MEM].virt_ptr;
+ if (++pm8001_ha->non_fatal_count == 1) {
+ if (pm8001_ha->chip_id == chip_8001) {
+ snprintf(pm8001_ha->forensic_info.data_buf.direct_data,
+ PAGE_SIZE, "Not supported for SPC controller");
+ return 0;
+ }
+ PM8001_IO_DBG(pm8001_ha,
+ pm8001_printk("forensic_info TYPE_NON_FATAL...\n"));
+ /*
+ * Step 1: Write the host buffer parameters in the MPI Fatal and
+ * Non-Fatal Error Dump Capture Table.This is the buffer
+ * where debug data will be DMAed to.
+ */
+ pm8001_mw32(nonfatal_table_address,
+ MPI_FATAL_EDUMP_TABLE_LO_OFFSET,
+ pm8001_ha->memoryMap.region[FORENSIC_MEM].phys_addr_lo);
+
+ pm8001_mw32(nonfatal_table_address,
+ MPI_FATAL_EDUMP_TABLE_HI_OFFSET,
+ pm8001_ha->memoryMap.region[FORENSIC_MEM].phys_addr_hi);
+
+ pm8001_mw32(nonfatal_table_address,
+ MPI_FATAL_EDUMP_TABLE_LENGTH, SYSFS_OFFSET);
+
+ /* Optionally, set the DUMPCTRL bit to 1 if the host
+ * keeps sending active I/Os while capturing the non-fatal
+ * debug data. Otherwise, leave this bit set to zero
+ */
+ pm8001_mw32(nonfatal_table_address,
+ MPI_FATAL_EDUMP_TABLE_HANDSHAKE, MPI_FATAL_EDUMP_HANDSHAKE_RDY);
+
+ /*
+ * Step 2: Clear Accumulative Length of Debug Data Transferred
+ * [ACCDDLEN] field in the MPI Fatal and Non-Fatal Error Dump
+ * Capture Table to zero.
+ */
+ pm8001_mw32(nonfatal_table_address,
+ MPI_FATAL_EDUMP_TABLE_ACCUM_LEN, 0);
+
+ /* initiallize previous accumulated length to 0 */
+ pm8001_ha->forensic_preserved_accumulated_transfer = 0;
+ pm8001_ha->non_fatal_read_length = 0;
+ }
+
+ total_len = pm8001_mr32(nonfatal_table_address,
+ MPI_FATAL_EDUMP_TABLE_TOTAL_LEN);
+ /*
+ * Step 3:Clear Fatal/Non-Fatal Debug Data Transfer Status [FDDTSTAT]
+ * field and then request that the SPCv controller transfer the debug
+ * data by setting bit 7 of the Inbound Doorbell Set Register.
+ */
+ pm8001_mw32(nonfatal_table_address, MPI_FATAL_EDUMP_TABLE_STATUS, 0);
+ pm8001_cw32(pm8001_ha, 0, MSGU_IBDB_SET,
+ SPCv_MSGU_CFG_TABLE_NONFATAL_DUMP);
+
+ /*
+ * Step 4.1: Read back the Inbound Doorbell Set Register (by polling for
+ * 2 seconds) until register bit 7 is cleared.
+ * This step only indicates the request is accepted by the controller.
+ */
+ start = jiffies + (2 * HZ); /* 2 sec */
+ do {
+ reg_val = pm8001_cr32(pm8001_ha, 0, MSGU_IBDB_SET) &
+ SPCv_MSGU_CFG_TABLE_NONFATAL_DUMP;
+ } while ((reg_val != 0) && time_before(jiffies, start));
+
+ /* Step 4.2: To check the completion of the transfer, poll the Fatal/Non
+ * Fatal Debug Data Transfer Status [FDDTSTAT] field for 2 seconds in
+ * the MPI Fatal and Non-Fatal Error Dump Capture Table.
+ */
+ start = jiffies + (2 * HZ); /* 2 sec */
+ do {
+ reg_val = pm8001_mr32(nonfatal_table_address,
+ MPI_FATAL_EDUMP_TABLE_STATUS);
+ } while ((!reg_val) && time_before(jiffies, start));
+
+ if ((reg_val == 0x00) ||
+ (reg_val == MPI_FATAL_EDUMP_TABLE_STAT_DMA_FAILED) ||
+ (reg_val > MPI_FATAL_EDUMP_TABLE_STAT_NF_SUCCESS_DONE)) {
+ pm8001_ha->non_fatal_read_length = 0;
+ buf_copy += snprintf(buf_copy, PAGE_SIZE, "%08x ", 0xFFFFFFFF);
+ pm8001_ha->non_fatal_count = 0;
+ return (buf_copy - buf);
+ } else if (reg_val ==
+ MPI_FATAL_EDUMP_TABLE_STAT_NF_SUCCESS_MORE_DATA) {
+ buf_copy += snprintf(buf_copy, PAGE_SIZE, "%08x ", 2);
+ } else if ((reg_val == MPI_FATAL_EDUMP_TABLE_STAT_NF_SUCCESS_DONE) ||
+ (pm8001_ha->non_fatal_read_length >= total_len)) {
+ pm8001_ha->non_fatal_read_length = 0;
+ buf_copy += snprintf(buf_copy, PAGE_SIZE, "%08x ", 4);
+ pm8001_ha->non_fatal_count = 0;
+ }
+ accum_len = pm8001_mr32(nonfatal_table_address,
+ MPI_FATAL_EDUMP_TABLE_ACCUM_LEN);
+ output_length = accum_len -
+ pm8001_ha->forensic_preserved_accumulated_transfer;
+
+ for (index = 0; index < output_length/4; index++)
+ buf_copy += snprintf(buf_copy, PAGE_SIZE,
+ "%08x ", *(temp+index));
+
+ pm8001_ha->non_fatal_read_length += output_length;
+
+ /* store current accumulated length to use in next iteration as
+ * the previous accumulated length
+ */
+ pm8001_ha->forensic_preserved_accumulated_transfer = accum_len;
+ return (buf_copy - buf);
+}
+
/**
* read_main_config_table - read the configure table and save it.
* @pm8001_ha: our hba card information
--
2.16.3
