[SCSI] qla4xxx: Boot from SAN support for open-iscsi
Hook qla4xxx in fw boot sysfs interface so iscsi tools
can use the info to create boot sessions.
Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index 2188401..72ec7e0 100644
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -1262,6 +1262,83 @@
return status;
}
+int qla4xxx_bootdb_by_index(struct scsi_qla_host *ha,
+ struct dev_db_entry *fw_ddb_entry,
+ dma_addr_t fw_ddb_entry_dma, uint16_t ddb_index)
+{
+ uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
+ uint32_t dev_db_end_offset;
+ int status = QLA_ERROR;
+
+ memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
+
+ dev_db_start_offset += (ddb_index * sizeof(*fw_ddb_entry));
+ dev_db_end_offset = FLASH_OFFSET_DB_END;
+
+ if (dev_db_start_offset > dev_db_end_offset) {
+ DEBUG2(ql4_printk(KERN_ERR, ha,
+ "%s:Invalid DDB index %d", __func__,
+ ddb_index));
+ goto exit_bootdb_failed;
+ }
+
+ if (qla4xxx_get_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
+ sizeof(*fw_ddb_entry)) != QLA_SUCCESS) {
+ ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
+ "failed\n", ha->host_no, __func__);
+ goto exit_bootdb_failed;
+ }
+
+ if (fw_ddb_entry->cookie == DDB_VALID_COOKIE)
+ status = QLA_SUCCESS;
+
+exit_bootdb_failed:
+ return status;
+}
+
+int qla4xxx_get_chap(struct scsi_qla_host *ha, char *username, char *password,
+ uint16_t idx)
+{
+ int ret = 0;
+ int rval = QLA_ERROR;
+ uint32_t offset = 0;
+ struct ql4_chap_table *chap_table;
+ dma_addr_t chap_dma;
+
+ chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
+ if (chap_table == NULL) {
+ ret = -ENOMEM;
+ goto exit_get_chap;
+ }
+
+ memset(chap_table, 0, sizeof(struct ql4_chap_table));
+
+ offset = 0x06000000 | (idx * sizeof(struct ql4_chap_table));
+
+ rval = qla4xxx_get_flash(ha, chap_dma, offset,
+ sizeof(struct ql4_chap_table));
+ if (rval != QLA_SUCCESS) {
+ ret = -EINVAL;
+ goto exit_get_chap;
+ }
+
+ DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
+ __le16_to_cpu(chap_table->cookie)));
+
+ if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
+ ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
+ goto exit_get_chap;
+ }
+
+ strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
+ strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
+ chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
+
+exit_get_chap:
+ dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
+ return ret;
+}
+
static int qla4xxx_set_chap(struct scsi_qla_host *ha, char *username,
char *password, uint16_t idx, int bidi)
{