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-rw-r--r--drivers/scsi/qla2xxx/qla_attr.c52
-rw-r--r--drivers/scsi/qla2xxx/qla_def.h4
-rw-r--r--drivers/scsi/qla2xxx/qla_fw.h1
-rw-r--r--drivers/scsi/qla2xxx/qla_gbl.h3
-rw-r--r--drivers/scsi/qla2xxx/qla_mbx.c37
-rw-r--r--drivers/scsi/qla2xxx/qla_os.c4
6 files changed, 101 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index e8c1c9e01a7..9aa00f25aa6 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -744,6 +744,57 @@ static struct bin_attribute sysfs_xgmac_stats_attr = {
.read = qla2x00_sysfs_read_xgmac_stats,
};
+static ssize_t
+qla2x00_sysfs_read_dcbx_tlv(struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct scsi_qla_host *vha = shost_priv(dev_to_shost(container_of(kobj,
+ struct device, kobj)));
+ struct qla_hw_data *ha = vha->hw;
+ int rval;
+ uint16_t actual_size;
+
+ if (!capable(CAP_SYS_ADMIN) || off != 0 || count > DCBX_TLV_DATA_SIZE)
+ return 0;
+
+ if (ha->dcbx_tlv)
+ goto do_read;
+
+ ha->dcbx_tlv = dma_alloc_coherent(&ha->pdev->dev, DCBX_TLV_DATA_SIZE,
+ &ha->dcbx_tlv_dma, GFP_KERNEL);
+ if (!ha->dcbx_tlv) {
+ qla_printk(KERN_WARNING, ha,
+ "Unable to allocate memory for DCBX TLV read-data.\n");
+ return 0;
+ }
+
+do_read:
+ actual_size = 0;
+ memset(ha->dcbx_tlv, 0, DCBX_TLV_DATA_SIZE);
+
+ rval = qla2x00_get_dcbx_params(vha, ha->dcbx_tlv_dma,
+ DCBX_TLV_DATA_SIZE);
+ if (rval != QLA_SUCCESS) {
+ qla_printk(KERN_WARNING, ha,
+ "Unable to read DCBX TLV data (%x).\n", rval);
+ count = 0;
+ }
+
+ memcpy(buf, ha->dcbx_tlv, count);
+
+ return count;
+}
+
+static struct bin_attribute sysfs_dcbx_tlv_attr = {
+ .attr = {
+ .name = "dcbx_tlv",
+ .mode = S_IRUSR,
+ },
+ .size = 0,
+ .read = qla2x00_sysfs_read_dcbx_tlv,
+};
+
static struct sysfs_entry {
char *name;
struct bin_attribute *attr;
@@ -759,6 +810,7 @@ static struct sysfs_entry {
{ "edc", &sysfs_edc_attr, 2 },
{ "edc_status", &sysfs_edc_status_attr, 2 },
{ "xgmac_stats", &sysfs_xgmac_stats_attr, 3 },
+ { "dcbx_tlv", &sysfs_dcbx_tlv_attr, 3 },
{ NULL },
};
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index da941be9b18..bb6bfd7b35f 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2401,6 +2401,10 @@ struct qla_hw_data {
void *xgmac_data;
dma_addr_t xgmac_data_dma;
+#define DCBX_TLV_DATA_SIZE PAGE_SIZE
+ void *dcbx_tlv;
+ dma_addr_t dcbx_tlv_dma;
+
struct task_struct *dpc_thread;
uint8_t dpc_active; /* DPC routine is active */
diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h
index 80ab46cfaca..152d16c77f3 100644
--- a/drivers/scsi/qla2xxx/qla_fw.h
+++ b/drivers/scsi/qla2xxx/qla_fw.h
@@ -1406,6 +1406,7 @@ struct access_chip_rsp_84xx {
#define MBC_RESTART_MPI_FW 0x3d
#define MBC_FLASH_ACCESS_CTRL 0x3e /* Control flash access. */
#define MBC_GET_XGMAC_STATS 0x7a
+#define MBC_GET_DCBX_PARAMS 0x51
/* Flash access control option field bit definitions */
#define FAC_OPT_FORCE_SEMAPHORE BIT_15
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index 66ba3997c91..fbf99726e55 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -296,6 +296,9 @@ qla81xx_fac_erase_sector(scsi_qla_host_t *, uint32_t, uint32_t);
extern int
qla2x00_get_xgmac_stats(scsi_qla_host_t *, dma_addr_t, uint16_t, uint16_t *);
+extern int
+qla2x00_get_dcbx_params(scsi_qla_host_t *, dma_addr_t, uint16_t);
+
/*
* Global Function Prototypes in qla_isr.c source file.
*/
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 2497fe4ce5a..e0fee484f79 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -3500,3 +3500,40 @@ qla2x00_get_xgmac_stats(scsi_qla_host_t *vha, dma_addr_t stats_dma,
return rval;
}
+
+int
+qla2x00_get_dcbx_params(scsi_qla_host_t *vha, dma_addr_t tlv_dma,
+ uint16_t size)
+{
+ int rval;
+ mbx_cmd_t mc;
+ mbx_cmd_t *mcp = &mc;
+
+ if (!IS_QLA81XX(vha->hw))
+ return QLA_FUNCTION_FAILED;
+
+ DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));
+
+ mcp->mb[0] = MBC_GET_DCBX_PARAMS;
+ mcp->mb[1] = 0;
+ mcp->mb[2] = MSW(tlv_dma);
+ mcp->mb[3] = LSW(tlv_dma);
+ mcp->mb[6] = MSW(MSD(tlv_dma));
+ mcp->mb[7] = LSW(MSD(tlv_dma));
+ mcp->mb[8] = size;
+ mcp->out_mb = MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
+ mcp->in_mb = MBX_2|MBX_1|MBX_0;
+ mcp->tov = MBX_TOV_SECONDS;
+ mcp->flags = 0;
+ rval = qla2x00_mailbox_command(vha, mcp);
+
+ if (rval != QLA_SUCCESS) {
+ DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=0x%x "
+ "mb[1]=0x%x mb[2]=0x%x.\n", __func__, vha->host_no, rval,
+ mcp->mb[0], mcp->mb[1], mcp->mb[2]));
+ } else {
+ DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
+ }
+
+ return rval;
+}
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 642e976083e..7415ead9215 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -2434,6 +2434,10 @@ qla2x00_mem_free(struct qla_hw_data *ha)
vfree(ha->fw_dump);
}
+ if (ha->dcbx_tlv)
+ dma_free_coherent(&ha->pdev->dev, DCBX_TLV_DATA_SIZE,
+ ha->dcbx_tlv, ha->dcbx_tlv_dma);
+
if (ha->xgmac_data)
dma_free_coherent(&ha->pdev->dev, XGMAC_DATA_SIZE,
ha->xgmac_data, ha->xgmac_data_dma);