[PATCH 18/43] qla2xxx: Tweak resource count dump

Himanshu Madhani
2017-12-20T06:57:13Z

From: Quinn Tran <quinn.tran@qlogic.com>

Fetch actual data from firmware instead of static data
at chip reset time.

Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
---
drivers/scsi/qla2xxx/qla_dfs.c | 30 ++++++++++++++++--------------
drivers/scsi/qla2xxx/qla_gbl.h | 1 +
drivers/scsi/qla2xxx/qla_mbx.c | 30 ++++++++++++++++++++++++++++++
3 files changed, 47 insertions(+), 14 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
index 87a18a00d509..4f0415e158cb 100644
--- a/drivers/scsi/qla2xxx/qla_dfs.c
+++ b/drivers/scsi/qla2xxx/qla_dfs.c
@@ -127,21 +127,23 @@ static int
qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused)
{
struct scsi_qla_host *vha = s->private;
- struct qla_hw_data *ha = vha->hw;
+ uint16_t mb[MAX_IOCB_MB_REG];
+ int rc;

- seq_puts(s, "FW Resource count\n\n");
- seq_printf(s, "Original TGT exchg count[%d]\n",
- ha->orig_fw_tgt_xcb_count);
- seq_printf(s, "current TGT exchg count[%d]\n",
- ha->cur_fw_tgt_xcb_count);
- seq_printf(s, "original Initiator Exchange count[%d]\n",
- ha->orig_fw_xcb_count);
- seq_printf(s, "Current Initiator Exchange count[%d]\n",
- ha->cur_fw_xcb_count);
- seq_printf(s, "Original IOCB count[%d]\n", ha->orig_fw_iocb_count);
- seq_printf(s, "Current IOCB count[%d]\n", ha->cur_fw_iocb_count);
- seq_printf(s, "MAX VP count[%d]\n", ha->max_npiv_vports);
- seq_printf(s, "MAX FCF count[%d]\n", ha->fw_max_fcf_count);
+ rc = qla24xx_res_count_wait(vha, mb, SIZEOF_IOCB_MB_REG);
+ if (rc != QLA_SUCCESS) {
+ seq_printf(s, "Mailbox Command failed %d, mb %#x", rc, mb[0]);
+ } else {
+ seq_puts(s, "FW Resource count\n\n");
+ seq_printf(s, "Original TGT exchg count[%d]\n", mb[1]);
+ seq_printf(s, "current TGT exchg count[%d]\n", mb[2]);
+ seq_printf(s, "original Initiator Exchange count[%d]\n", mb[3]);
+ seq_printf(s, "Current Initiator Exchange count[%d]\n", mb[6]);
+ seq_printf(s, "Original IOCB count[%d]\n", mb[7]);
+ seq_printf(s, "Current IOCB count[%d]\n", mb[10]);
+ seq_printf(s, "MAX VP count[%d]\n", mb[11]);
+ seq_printf(s, "MAX FCF count[%d]\n", mb[12]);
+ }

return 0;
}
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index ea8f24e07409..2e0907994579 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -504,6 +504,7 @@ int qla24xx_get_port_login_templ(scsi_qla_host_t *, dma_addr_t,

extern int qla27xx_get_zio_threshold(scsi_qla_host_t *, uint16_t *);
extern int qla27xx_set_zio_threshold(scsi_qla_host_t *, uint16_t);
+int qla24xx_res_count_wait(struct scsi_qla_host *, uint16_t *, int);

/*
* 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 956d121cc396..0c8ad7b31294 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -18,6 +18,7 @@ static struct mb_cmd_name {
{MBC_GET_PORT_DATABASE, "GPDB"},
{MBC_GET_ID_LIST, "GIDList"},
{MBC_GET_LINK_PRIV_STATS, "Stats"},
+ {MBC_GET_RESOURCE_COUNTS, "ResCnt"},
};

static const char *mb_to_str(uint16_t cmd)
@@ -6273,3 +6274,32 @@ qla2x00_read_sfp_dev(struct scsi_qla_host *vha, char *buf, int count)

return rval;
}
+
+int qla24xx_res_count_wait(struct scsi_qla_host *vha,
+ uint16_t *out_mb, int out_mb_sz)
+{
+ int rval = QLA_FUNCTION_FAILED;
+ mbx_cmd_t mc;
+
+ if (!vha->hw->flags.fw_started)
+ goto done;
+
+ memset(&mc, 0, sizeof(mc));
+ mc.mb[0] = MBC_GET_RESOURCE_COUNTS;
+
+ rval = qla24xx_send_mb_cmd(vha, &mc);
+ if (rval != QLA_SUCCESS) {
+ ql_dbg(ql_dbg_mbx, vha, 0xffff,
+ "%s: fail\n", __func__);
+ } else {
+ if (out_mb_sz <= SIZEOF_IOCB_MB_REG)
+ memcpy(out_mb, mc.mb, out_mb_sz);
+ else
+ memcpy(out_mb, mc.mb, SIZEOF_IOCB_MB_REG);
+
+ ql_dbg(ql_dbg_mbx, vha, 0xffff,
+ "%s: done\n", __func__);
+ }
+done:
+ return rval;
+}
--
2.12.0