[SCSI] qla2xxx: Add sysfs node for displaying board temperature.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Madhuranath Iyengar <Madhu.Iyengar@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 65 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 04d6cfc2e919..e473e9fb363c 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -4160,6 +4160,71 @@ qla24xx_set_fcp_prio(scsi_qla_host_t *vha, uint16_t loop_id, uint16_t priority,
 }
 
 int
+qla2x00_get_thermal_temp(scsi_qla_host_t *vha, uint16_t *temp, uint16_t *frac)
+{
+        int rval;
+        mbx_cmd_t mc;
+        mbx_cmd_t *mcp = &mc;
+        struct qla_hw_data *ha = vha->hw;
+
+        DEBUG11(printk(KERN_INFO "%s(%ld): entered.\n", __func__, ha->host_no));
+
+        /* High bits. */
+        mcp->mb[0] = MBC_READ_SFP;
+        mcp->mb[1] = 0x98;
+        mcp->mb[2] = 0;
+        mcp->mb[3] = 0;
+        mcp->mb[6] = 0;
+        mcp->mb[7] = 0;
+        mcp->mb[8] = 1;
+        mcp->mb[9] = 0x01;
+        mcp->mb[10] = BIT_13|BIT_0;
+        mcp->out_mb = MBX_10|MBX_9|MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
+        mcp->in_mb = 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(KERN_WARNING
+                    "%s(%ld): failed=%x (%x).\n", __func__,
+                    vha->host_no, rval, mcp->mb[0]));
+                ha->flags.thermal_supported = 0;
+                goto fail;
+        }
+        *temp = mcp->mb[1] & 0xFF;
+
+        /* Low bits. */
+        mcp->mb[0] = MBC_READ_SFP;
+        mcp->mb[1] = 0x98;
+        mcp->mb[2] = 0;
+        mcp->mb[3] = 0;
+        mcp->mb[6] = 0;
+        mcp->mb[7] = 0;
+        mcp->mb[8] = 1;
+        mcp->mb[9] = 0x10;
+        mcp->mb[10] = BIT_13|BIT_0;
+        mcp->out_mb = MBX_10|MBX_9|MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
+        mcp->in_mb = 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(KERN_WARNING
+                    "%s(%ld): failed=%x (%x).\n", __func__,
+                    vha->host_no, rval, mcp->mb[0]));
+                ha->flags.thermal_supported = 0;
+                goto fail;
+        }
+        *frac = ((mcp->mb[1] & 0xFF) >> 6) * 25;
+
+        if (rval == QLA_SUCCESS)
+                DEBUG11(printk(KERN_INFO
+                    "%s(%ld): done.\n", __func__, ha->host_no));
+fail:
+        return rval;
+}
+
+int
 qla82xx_mbx_intr_enable(scsi_qla_host_t *vha)
 {
         int rval;