summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/qla4xxx/ql4_attr.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_attr.c')
-rw-r--r--drivers/scsi/qla4xxx/ql4_attr.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_attr.c b/drivers/scsi/qla4xxx/ql4_attr.c
index 0b0a7d42137d..c681b2a355e1 100644
--- a/drivers/scsi/qla4xxx/ql4_attr.c
+++ b/drivers/scsi/qla4xxx/ql4_attr.c
@@ -9,6 +9,140 @@
#include "ql4_glbl.h"
#include "ql4_dbg.h"
+static ssize_t
+qla4_8xxx_sysfs_read_fw_dump(struct file *filep, struct kobject *kobj,
+ struct bin_attribute *ba, char *buf, loff_t off,
+ size_t count)
+{
+ struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
+ struct device, kobj)));
+
+ if (!is_qla8022(ha))
+ return -EINVAL;
+
+ if (!test_bit(AF_82XX_DUMP_READING, &ha->flags))
+ return 0;
+
+ return memory_read_from_buffer(buf, count, &off, ha->fw_dump,
+ ha->fw_dump_size);
+}
+
+static ssize_t
+qla4_8xxx_sysfs_write_fw_dump(struct file *filep, struct kobject *kobj,
+ struct bin_attribute *ba, char *buf, loff_t off,
+ size_t count)
+{
+ struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
+ struct device, kobj)));
+ uint32_t dev_state;
+ long reading;
+ int ret = 0;
+
+ if (!is_qla8022(ha))
+ return -EINVAL;
+
+ if (off != 0)
+ return ret;
+
+ buf[1] = 0;
+ ret = kstrtol(buf, 10, &reading);
+ if (ret) {
+ ql4_printk(KERN_ERR, ha, "%s: Invalid input. Return err %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ switch (reading) {
+ case 0:
+ /* clear dump collection flags */
+ if (test_and_clear_bit(AF_82XX_DUMP_READING, &ha->flags)) {
+ clear_bit(AF_82XX_FW_DUMPED, &ha->flags);
+ /* Reload minidump template */
+ qla4xxx_alloc_fw_dump(ha);
+ DEBUG2(ql4_printk(KERN_INFO, ha,
+ "Firmware template reloaded\n"));
+ }
+ break;
+ case 1:
+ /* Set flag to read dump */
+ if (test_bit(AF_82XX_FW_DUMPED, &ha->flags) &&
+ !test_bit(AF_82XX_DUMP_READING, &ha->flags)) {
+ set_bit(AF_82XX_DUMP_READING, &ha->flags);
+ DEBUG2(ql4_printk(KERN_INFO, ha,
+ "Raw firmware dump ready for read on (%ld).\n",
+ ha->host_no));
+ }
+ break;
+ case 2:
+ /* Reset HBA */
+ qla4_8xxx_idc_lock(ha);
+ dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
+ if (dev_state == QLA82XX_DEV_READY) {
+ ql4_printk(KERN_INFO, ha,
+ "%s: Setting Need reset, reset_owner is 0x%x.\n",
+ __func__, ha->func_num);
+ qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
+ QLA82XX_DEV_NEED_RESET);
+ set_bit(AF_82XX_RST_OWNER, &ha->flags);
+ } else
+ ql4_printk(KERN_INFO, ha,
+ "%s: Reset not performed as device state is 0x%x\n",
+ __func__, dev_state);
+
+ qla4_8xxx_idc_unlock(ha);
+ break;
+ default:
+ /* do nothing */
+ break;
+ }
+
+ return count;
+}
+
+static struct bin_attribute sysfs_fw_dump_attr = {
+ .attr = {
+ .name = "fw_dump",
+ .mode = S_IRUSR | S_IWUSR,
+ },
+ .size = 0,
+ .read = qla4_8xxx_sysfs_read_fw_dump,
+ .write = qla4_8xxx_sysfs_write_fw_dump,
+};
+
+static struct sysfs_entry {
+ char *name;
+ struct bin_attribute *attr;
+} bin_file_entries[] = {
+ { "fw_dump", &sysfs_fw_dump_attr },
+ { NULL },
+};
+
+void qla4_8xxx_alloc_sysfs_attr(struct scsi_qla_host *ha)
+{
+ struct Scsi_Host *host = ha->host;
+ struct sysfs_entry *iter;
+ int ret;
+
+ for (iter = bin_file_entries; iter->name; iter++) {
+ ret = sysfs_create_bin_file(&host->shost_gendev.kobj,
+ iter->attr);
+ if (ret)
+ ql4_printk(KERN_ERR, ha,
+ "Unable to create sysfs %s binary attribute (%d).\n",
+ iter->name, ret);
+ }
+}
+
+void qla4_8xxx_free_sysfs_attr(struct scsi_qla_host *ha)
+{
+ struct Scsi_Host *host = ha->host;
+ struct sysfs_entry *iter;
+
+ for (iter = bin_file_entries; iter->name; iter++)
+ sysfs_remove_bin_file(&host->shost_gendev.kobj,
+ iter->attr);
+}
+
/* Scsi_Host attributes. */
static ssize_t
qla4xxx_fw_version_show(struct device *dev,