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authorTej Parkash <tej.parkash@qlogic.com>2014-02-25 07:06:58 +0400
committerChristoph Hellwig <hch@lst.de>2014-05-19 21:12:13 +0400
commitb410982c98dd606c9dec9508770f0ac95eeb1d42 (patch)
treea82344078f941687e99a647172389ad58d197175 /drivers/scsi/qla4xxx
parenta511b4afcb4f0fbe5e66bcc9dc07eb53d3510160 (diff)
downloadlinux-b410982c98dd606c9dec9508770f0ac95eeb1d42.tar.xz
qla4xxx: Add support of 0xFF capture mask for minidump
Signed-off-by: Tej Parkash <tej.parkash@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/qla4xxx')
-rw-r--r--drivers/scsi/qla4xxx/ql4_fw.h4
-rw-r--r--drivers/scsi/qla4xxx/ql4_init.c30
-rw-r--r--drivers/scsi/qla4xxx/ql4_os.c2
3 files changed, 33 insertions, 3 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_fw.h b/drivers/scsi/qla4xxx/ql4_fw.h
index 209853ce0bbc..699575efc9ba 100644
--- a/drivers/scsi/qla4xxx/ql4_fw.h
+++ b/drivers/scsi/qla4xxx/ql4_fw.h
@@ -1415,6 +1415,9 @@ struct ql_iscsi_stats {
#define QLA83XX_DBG_OCM_WNDREG_ARRAY_LEN 16
#define QLA83XX_SS_OCM_WNDREG_INDEX 3
#define QLA83XX_SS_PCI_INDEX 0
+#define QLA8022_TEMPLATE_CAP_OFFSET 172
+#define QLA83XX_TEMPLATE_CAP_OFFSET 268
+#define QLA80XX_TEMPLATE_RESERVED_BITS 16
struct qla4_8xxx_minidump_template_hdr {
uint32_t entry_type;
@@ -1434,6 +1437,7 @@ struct qla4_8xxx_minidump_template_hdr {
uint32_t saved_state_array[QLA8XXX_DBG_STATE_ARRAY_LEN];
uint32_t capture_size_array[QLA8XXX_DBG_CAP_SIZE_ARRAY_LEN];
uint32_t ocm_window_reg[QLA83XX_DBG_OCM_WNDREG_ARRAY_LEN];
+ uint32_t capabilities[QLA80XX_TEMPLATE_RESERVED_BITS];
};
#endif /* _QLA4X_FW_H */
diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c
index 28fbece7e08f..7dda1a0d7161 100644
--- a/drivers/scsi/qla4xxx/ql4_init.c
+++ b/drivers/scsi/qla4xxx/ql4_init.c
@@ -282,6 +282,25 @@ qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
return ipv4_wait|ipv6_wait;
}
+static int qla4_80xx_is_minidump_dma_capable(struct scsi_qla_host *ha,
+ struct qla4_8xxx_minidump_template_hdr *md_hdr)
+{
+ int offset = (is_qla8022(ha)) ? QLA8022_TEMPLATE_CAP_OFFSET :
+ QLA83XX_TEMPLATE_CAP_OFFSET;
+ int rval = 1;
+ uint32_t *cap_offset;
+
+ cap_offset = (uint32_t *)((char *)md_hdr + offset);
+
+ if (!(le32_to_cpu(*cap_offset) & BIT_0)) {
+ ql4_printk(KERN_INFO, ha, "PEX DMA Not supported %d\n",
+ *cap_offset);
+ rval = 0;
+ }
+
+ return rval;
+}
+
/**
* qla4xxx_alloc_fw_dump - Allocate memory for minidump data.
* @ha: pointer to host adapter structure.
@@ -294,6 +313,7 @@ void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha)
void *md_tmp;
dma_addr_t md_tmp_dma;
struct qla4_8xxx_minidump_template_hdr *md_hdr;
+ int dma_capable;
if (ha->fw_dump) {
ql4_printk(KERN_WARNING, ha,
@@ -326,13 +346,19 @@ void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha)
md_hdr = (struct qla4_8xxx_minidump_template_hdr *)md_tmp;
+ dma_capable = qla4_80xx_is_minidump_dma_capable(ha, md_hdr);
+
capture_debug_level = md_hdr->capture_debug_level;
/* Get capture mask based on module loadtime setting. */
- if (ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F)
+ if ((ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F) ||
+ (ql4xmdcapmask == 0xFF && dma_capable)) {
ha->fw_dump_capture_mask = ql4xmdcapmask;
- else
+ } else {
+ if (ql4xmdcapmask == 0xFF)
+ ql4_printk(KERN_INFO, ha, "Falling back to default capture mask, as PEX DMA is not supported\n");
ha->fw_dump_capture_mask = capture_debug_level;
+ }
md_hdr->driver_capture_mask = ha->fw_dump_capture_mask;
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index fb90c9d737bc..bb160409b7cb 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -88,7 +88,7 @@ module_param(ql4xmdcapmask, int, S_IRUGO);
MODULE_PARM_DESC(ql4xmdcapmask,
" Set the Minidump driver capture mask level.\n"
"\t\t Default is 0 (firmware default capture mask)\n"
- "\t\t Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F");
+ "\t\t Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");
int ql4xenablemd = 1;
module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);