scsi: qedi: Add support for Boot from SAN over iSCSI offload
This patch adds support for Boot from SAN over iSCSI offload. The iSCSI
boot information in the NVRAM is populated under
/sys/firmware/iscsi_bootX/ using qed NVM-image reading API and further
exported to open-iscsi to perform iSCSI login enabling boot over offload
iSCSI interface in a Boot from SAN environment.
Signed-off-by: Arun Easi <arun.easi@cavium.com>
Signed-off-by: Andrew Vasquez <andrew.vasquez@cavium.com>
Signed-off-by: Manish Rangankar <manish.rangankar@cavium.com>
Signed-off-by: Nilesh Javali <nilesh.javali@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/qedi/qedi.h b/drivers/scsi/qedi/qedi.h
index 32632c9..91d2f51 100644
--- a/drivers/scsi/qedi/qedi.h
+++ b/drivers/scsi/qedi/qedi.h
@@ -23,11 +23,17 @@
#include <linux/qed/qed_iscsi_if.h>
#include <linux/qed/qed_ll2_if.h>
#include "qedi_version.h"
+#include "qedi_nvm_iscsi_cfg.h"
#define QEDI_MODULE_NAME "qedi"
struct qedi_endpoint;
+#ifndef GET_FIELD2
+#define GET_FIELD2(value, name) \
+ (((value) & (name ## _MASK)) >> (name ## _OFFSET))
+#endif
+
/*
* PCI function probe defines
*/
@@ -66,6 +72,11 @@
#define QEDI_HW_DMA_BOUNDARY 0xfff
#define QEDI_PATH_HANDLE 0xFE0000000UL
+enum qedi_nvm_tgts {
+ QEDI_NVM_TGT_PRI,
+ QEDI_NVM_TGT_SEC,
+};
+
struct qedi_uio_ctrl {
/* meta data */
u32 uio_hsi_version;
@@ -283,6 +294,8 @@
void *bdq_pbl_list;
dma_addr_t bdq_pbl_list_dma;
u8 bdq_pbl_list_num_entries;
+ struct nvm_iscsi_cfg *iscsi_cfg;
+ dma_addr_t nvm_buf_dma;
void __iomem *bdq_primary_prod;
void __iomem *bdq_secondary_prod;
u16 bdq_prod_idx;
@@ -337,6 +350,10 @@
bool use_fast_sge;
atomic_t num_offloads;
+#define SYSFS_FLAG_FW_SEL_BOOT 2
+#define IPV6_LEN 41
+#define IPV4_LEN 17
+ struct iscsi_boot_kset *boot_kset;
};
struct qedi_work {
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index 5f5a4ef..2c37836 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -19,6 +19,7 @@
#include <linux/mm.h>
#include <linux/if_vlan.h>
#include <linux/cpu.h>
+#include <linux/iscsi_boot_sysfs.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
@@ -1143,6 +1144,30 @@
return rc;
}
+static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
+{
+ if (qedi->iscsi_cfg)
+ dma_free_coherent(&qedi->pdev->dev,
+ sizeof(struct nvm_iscsi_cfg),
+ qedi->iscsi_cfg, qedi->nvm_buf_dma);
+}
+
+static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
+{
+ qedi->iscsi_cfg = dma_zalloc_coherent(&qedi->pdev->dev,
+ sizeof(struct nvm_iscsi_cfg),
+ &qedi->nvm_buf_dma, GFP_KERNEL);
+ if (!qedi->iscsi_cfg) {
+ QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
+ return -ENOMEM;
+ }
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
+ "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_cfg,
+ qedi->nvm_buf_dma);
+
+ return 0;
+}
+
static void qedi_free_bdq(struct qedi_ctx *qedi)
{
int i;
@@ -1183,6 +1208,7 @@
kfree(gl[i]);
}
qedi_free_bdq(qedi);
+ qedi_free_nvm_iscsi_cfg(qedi);
}
static int qedi_alloc_bdq(struct qedi_ctx *qedi)
@@ -1309,6 +1335,11 @@
if (rc)
goto mem_alloc_failure;
+ /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
+ rc = qedi_alloc_nvm_iscsi_cfg(qedi);
+ if (rc)
+ goto mem_alloc_failure;
+
/* Allocate a CQ and an associated PBL for each MSI-X
* vector.
*/
@@ -1671,6 +1702,387 @@
qedi_ops->ll2->start(qedi->cdev, ¶ms);
}
+/**
+ * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
+ * for gaps) for the matching absolute-pf-id of the QEDI device.
+ */
+static struct nvm_iscsi_block *
+qedi_get_nvram_block(struct qedi_ctx *qedi)
+{
+ int i;
+ u8 pf;
+ u32 flags;
+ struct nvm_iscsi_block *block;
+
+ pf = qedi->dev_info.common.abs_pf_id;
+ block = &qedi->iscsi_cfg->block[0];
+ for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
+ flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
+ NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
+ if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
+ NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
+ (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
+ >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
+ return block;
+ }
+ return NULL;
+}
+
+static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
+{
+ struct qedi_ctx *qedi = data;
+ struct nvm_iscsi_initiator *initiator;
+ char *str = buf;
+ int rc = 1;
+ u32 ipv6_en, dhcp_en, ip_len;
+ struct nvm_iscsi_block *block;
+ char *fmt, *ip, *sub, *gw;
+
+ block = qedi_get_nvram_block(qedi);
+ if (!block)
+ return 0;
+
+ initiator = &block->initiator;
+ ipv6_en = block->generic.ctrl_flags &
+ NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
+ dhcp_en = block->generic.ctrl_flags &
+ NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
+ /* Static IP assignments. */
+ fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
+ ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
+ ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
+ sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
+ initiator->ipv4.subnet_mask.byte;
+ gw = ipv6_en ? initiator->ipv6.gateway.byte :
+ initiator->ipv4.gateway.byte;
+ /* DHCP IP adjustments. */
+ fmt = dhcp_en ? "%s\n" : fmt;
+ if (dhcp_en) {
+ ip = ipv6_en ? "0::0" : "0.0.0.0";
+ sub = ip;
+ gw = ip;
+ ip_len = ipv6_en ? 5 : 8;
+ }
+
+ switch (type) {
+ case ISCSI_BOOT_ETH_IP_ADDR:
+ rc = snprintf(str, ip_len, fmt, ip);
+ break;
+ case ISCSI_BOOT_ETH_SUBNET_MASK:
+ rc = snprintf(str, ip_len, fmt, sub);
+ break;
+ case ISCSI_BOOT_ETH_GATEWAY:
+ rc = snprintf(str, ip_len, fmt, gw);
+ break;
+ case ISCSI_BOOT_ETH_FLAGS:
+ rc = snprintf(str, 3, "%hhd\n",
+ SYSFS_FLAG_FW_SEL_BOOT);
+ break;
+ case ISCSI_BOOT_ETH_INDEX:
+ rc = snprintf(str, 3, "0\n");
+ break;
+ case ISCSI_BOOT_ETH_MAC:
+ rc = sysfs_format_mac(str, qedi->mac, ETH_ALEN);
+ break;
+ case ISCSI_BOOT_ETH_VLAN:
+ rc = snprintf(str, 12, "%d\n",
+ GET_FIELD2(initiator->generic_cont0,
+ NVM_ISCSI_CFG_INITIATOR_VLAN));
+ break;
+ case ISCSI_BOOT_ETH_ORIGIN:
+ if (dhcp_en)
+ rc = snprintf(str, 3, "3\n");
+ break;
+ default:
+ rc = 0;
+ break;
+ }
+
+ return rc;
+}
+
+static umode_t qedi_eth_get_attr_visibility(void *data, int type)
+{
+ int rc = 1;
+
+ switch (type) {
+ case ISCSI_BOOT_ETH_FLAGS:
+ case ISCSI_BOOT_ETH_MAC:
+ case ISCSI_BOOT_ETH_INDEX:
+ case ISCSI_BOOT_ETH_IP_ADDR:
+ case ISCSI_BOOT_ETH_SUBNET_MASK:
+ case ISCSI_BOOT_ETH_GATEWAY:
+ case ISCSI_BOOT_ETH_ORIGIN:
+ case ISCSI_BOOT_ETH_VLAN:
+ rc = 0444;
+ break;
+ default:
+ rc = 0;
+ break;
+ }
+ return rc;
+}
+
+static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
+{
+ struct qedi_ctx *qedi = data;
+ struct nvm_iscsi_initiator *initiator;
+ char *str = buf;
+ int rc;
+ struct nvm_iscsi_block *block;
+
+ block = qedi_get_nvram_block(qedi);
+ if (!block)
+ return 0;
+
+ initiator = &block->initiator;
+
+ switch (type) {
+ case ISCSI_BOOT_INI_INITIATOR_NAME:
+ rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n",
+ initiator->initiator_name.byte);
+ break;
+ default:
+ rc = 0;
+ break;
+ }
+ return rc;
+}
+
+static umode_t qedi_ini_get_attr_visibility(void *data, int type)
+{
+ int rc;
+
+ switch (type) {
+ case ISCSI_BOOT_INI_INITIATOR_NAME:
+ rc = 0444;
+ break;
+ default:
+ rc = 0;
+ break;
+ }
+ return rc;
+}
+
+static ssize_t
+qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
+ char *buf, enum qedi_nvm_tgts idx)
+{
+ char *str = buf;
+ int rc = 1;
+ u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
+ struct nvm_iscsi_block *block;
+ char *chap_name, *chap_secret;
+ char *mchap_name, *mchap_secret;
+
+ block = qedi_get_nvram_block(qedi);
+ if (!block)
+ goto exit_show_tgt_info;
+
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
+ "Port:%d, tgt_idx:%d\n",
+ GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
+
+ ctrl_flags = block->target[idx].ctrl_flags &
+ NVM_ISCSI_CFG_TARGET_ENABLED;
+
+ if (!ctrl_flags) {
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
+ "Target disabled\n");
+ goto exit_show_tgt_info;
+ }
+
+ ipv6_en = block->generic.ctrl_flags &
+ NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
+ ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
+ chap_en = block->generic.ctrl_flags &
+ NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
+ chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
+ chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
+
+ mchap_en = block->generic.ctrl_flags &
+ NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
+ mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
+ mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
+
+ switch (type) {
+ case ISCSI_BOOT_TGT_NAME:
+ rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n",
+ block->target[idx].target_name.byte);
+ break;
+ case ISCSI_BOOT_TGT_IP_ADDR:
+ if (ipv6_en)
+ rc = snprintf(str, ip_len, "%pI6\n",
+ block->target[idx].ipv6_addr.byte);
+ else
+ rc = snprintf(str, ip_len, "%pI4\n",
+ block->target[idx].ipv4_addr.byte);
+ break;
+ case ISCSI_BOOT_TGT_PORT:
+ rc = snprintf(str, 12, "%d\n",
+ GET_FIELD2(block->target[idx].generic_cont0,
+ NVM_ISCSI_CFG_TARGET_TCP_PORT));
+ break;
+ case ISCSI_BOOT_TGT_LUN:
+ rc = snprintf(str, 22, "%.*d\n",
+ block->target[idx].lun.value[1],
+ block->target[idx].lun.value[0]);
+ break;
+ case ISCSI_BOOT_TGT_CHAP_NAME:
+ rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n",
+ chap_name);
+ break;
+ case ISCSI_BOOT_TGT_CHAP_SECRET:
+ rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n",
+ chap_secret);
+ break;
+ case ISCSI_BOOT_TGT_REV_CHAP_NAME:
+ rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n",
+ mchap_name);
+ break;
+ case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
+ rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n",
+ mchap_secret);
+ break;
+ case ISCSI_BOOT_TGT_FLAGS:
+ rc = snprintf(str, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
+ break;
+ case ISCSI_BOOT_TGT_NIC_ASSOC:
+ rc = snprintf(str, 3, "0\n");
+ break;
+ default:
+ rc = 0;
+ break;
+ }
+
+exit_show_tgt_info:
+ return rc;
+}
+
+static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
+{
+ struct qedi_ctx *qedi = data;
+
+ return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
+}
+
+static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
+{
+ struct qedi_ctx *qedi = data;
+
+ return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
+}
+
+static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
+{
+ int rc;
+
+ switch (type) {
+ case ISCSI_BOOT_TGT_NAME:
+ case ISCSI_BOOT_TGT_IP_ADDR:
+ case ISCSI_BOOT_TGT_PORT:
+ case ISCSI_BOOT_TGT_LUN:
+ case ISCSI_BOOT_TGT_CHAP_NAME:
+ case ISCSI_BOOT_TGT_CHAP_SECRET:
+ case ISCSI_BOOT_TGT_REV_CHAP_NAME:
+ case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
+ case ISCSI_BOOT_TGT_NIC_ASSOC:
+ case ISCSI_BOOT_TGT_FLAGS:
+ rc = 0444;
+ break;
+ default:
+ rc = 0;
+ break;
+ }
+ return rc;
+}
+
+static void qedi_boot_release(void *data)
+{
+ struct qedi_ctx *qedi = data;
+
+ scsi_host_put(qedi->shost);
+}
+
+static int qedi_get_boot_info(struct qedi_ctx *qedi)
+{
+ int ret = 1;
+ u16 len;
+
+ len = sizeof(struct nvm_iscsi_cfg);
+
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
+ "Get NVM iSCSI CFG image\n");
+ ret = qedi_ops->common->nvm_get_image(qedi->cdev,
+ QED_NVM_IMAGE_ISCSI_CFG,
+ (char *)qedi->iscsi_cfg, len);
+ if (ret)
+ QEDI_ERR(&qedi->dbg_ctx,
+ "Could not get NVM image. ret = %d\n", ret);
+
+ return ret;
+}
+
+static int qedi_setup_boot_info(struct qedi_ctx *qedi)
+{
+ struct iscsi_boot_kobj *boot_kobj;
+
+ if (qedi_get_boot_info(qedi))
+ return -EPERM;
+
+ qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
+ if (!qedi->boot_kset)
+ goto kset_free;
+
+ if (!scsi_host_get(qedi->shost))
+ goto kset_free;
+
+ boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
+ qedi_show_boot_tgt_pri_info,
+ qedi_tgt_get_attr_visibility,
+ qedi_boot_release);
+ if (!boot_kobj)
+ goto put_host;
+
+ if (!scsi_host_get(qedi->shost))
+ goto kset_free;
+
+ boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
+ qedi_show_boot_tgt_sec_info,
+ qedi_tgt_get_attr_visibility,
+ qedi_boot_release);
+ if (!boot_kobj)
+ goto put_host;
+
+ if (!scsi_host_get(qedi->shost))
+ goto kset_free;
+
+ boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
+ qedi_show_boot_ini_info,
+ qedi_ini_get_attr_visibility,
+ qedi_boot_release);
+ if (!boot_kobj)
+ goto put_host;
+
+ if (!scsi_host_get(qedi->shost))
+ goto kset_free;
+
+ boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
+ qedi_show_boot_eth_info,
+ qedi_eth_get_attr_visibility,
+ qedi_boot_release);
+ if (!boot_kobj)
+ goto put_host;
+
+ return 0;
+
+put_host:
+ scsi_host_put(qedi->shost);
+kset_free:
+ iscsi_boot_destroy_kset(qedi->boot_kset);
+ return -ENOMEM;
+}
+
static void __qedi_remove(struct pci_dev *pdev, int mode)
{
struct qedi_ctx *qedi = pci_get_drvdata(pdev);
@@ -1724,6 +2136,9 @@
qedi->ll2_recv_thread = NULL;
}
qedi_ll2_free_skbs(qedi);
+
+ if (qedi->boot_kset)
+ iscsi_boot_destroy_kset(qedi->boot_kset);
}
}
@@ -1967,6 +2382,10 @@
/* F/w needs 1st task context memory entry for performance */
set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
atomic_set(&qedi->num_offloads, 0);
+
+ if (qedi_setup_boot_info(qedi))
+ QEDI_ERR(&qedi->dbg_ctx,
+ "No iSCSI boot target configured\n");
}
return 0;
diff --git a/drivers/scsi/qedi/qedi_nvm_iscsi_cfg.h b/drivers/scsi/qedi/qedi_nvm_iscsi_cfg.h
new file mode 100644
index 0000000..df39b69
--- /dev/null
+++ b/drivers/scsi/qedi/qedi_nvm_iscsi_cfg.h
@@ -0,0 +1,210 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#ifndef NVM_ISCSI_CFG_H
+#define NVM_ISCSI_CFG_H
+
+#define NUM_OF_ISCSI_TARGET_PER_PF 4 /* Defined as per the
+ * ISCSI IBFT constraint
+ */
+#define NUM_OF_ISCSI_PF_SUPPORTED 4 /* One PF per Port -
+ * assuming 4 port card
+ */
+
+#define NVM_ISCSI_CFG_DHCP_NAME_MAX_LEN 256
+
+union nvm_iscsi_dhcp_vendor_id {
+ u32 value[NVM_ISCSI_CFG_DHCP_NAME_MAX_LEN / 4];
+ u8 byte[NVM_ISCSI_CFG_DHCP_NAME_MAX_LEN];
+};
+
+#define NVM_ISCSI_IPV4_ADDR_BYTE_LEN 4
+union nvm_iscsi_ipv4_addr {
+ u32 addr;
+ u8 byte[NVM_ISCSI_IPV4_ADDR_BYTE_LEN];
+};
+
+#define NVM_ISCSI_IPV6_ADDR_BYTE_LEN 16
+union nvm_iscsi_ipv6_addr {
+ u32 addr[4];
+ u8 byte[NVM_ISCSI_IPV6_ADDR_BYTE_LEN];
+};
+
+struct nvm_iscsi_initiator_ipv4 {
+ union nvm_iscsi_ipv4_addr addr; /* 0x0 */
+ union nvm_iscsi_ipv4_addr subnet_mask; /* 0x4 */
+ union nvm_iscsi_ipv4_addr gateway; /* 0x8 */
+ union nvm_iscsi_ipv4_addr primary_dns; /* 0xC */
+ union nvm_iscsi_ipv4_addr secondary_dns; /* 0x10 */
+ union nvm_iscsi_ipv4_addr dhcp_addr; /* 0x14 */
+
+ union nvm_iscsi_ipv4_addr isns_server; /* 0x18 */
+ union nvm_iscsi_ipv4_addr slp_server; /* 0x1C */
+ union nvm_iscsi_ipv4_addr primay_radius_server; /* 0x20 */
+ union nvm_iscsi_ipv4_addr secondary_radius_server; /* 0x24 */
+
+ union nvm_iscsi_ipv4_addr rsvd[4]; /* 0x28 */
+};
+
+struct nvm_iscsi_initiator_ipv6 {
+ union nvm_iscsi_ipv6_addr addr; /* 0x0 */
+ union nvm_iscsi_ipv6_addr subnet_mask; /* 0x10 */
+ union nvm_iscsi_ipv6_addr gateway; /* 0x20 */
+ union nvm_iscsi_ipv6_addr primary_dns; /* 0x30 */
+ union nvm_iscsi_ipv6_addr secondary_dns; /* 0x40 */
+ union nvm_iscsi_ipv6_addr dhcp_addr; /* 0x50 */
+
+ union nvm_iscsi_ipv6_addr isns_server; /* 0x60 */
+ union nvm_iscsi_ipv6_addr slp_server; /* 0x70 */
+ union nvm_iscsi_ipv6_addr primay_radius_server; /* 0x80 */
+ union nvm_iscsi_ipv6_addr secondary_radius_server; /* 0x90 */
+
+ union nvm_iscsi_ipv6_addr rsvd[3]; /* 0xA0 */
+
+ u32 config; /* 0xD0 */
+#define NVM_ISCSI_CFG_INITIATOR_IPV6_SUBNET_MASK_PREFIX_MASK 0x000000FF
+#define NVM_ISCSI_CFG_INITIATOR_IPV6_SUBNET_MASK_PREFIX_OFFSET 0
+
+ u32 rsvd_1[3];
+};
+
+#define NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN 256
+union nvm_iscsi_name {
+ u32 value[NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN / 4];
+ u8 byte[NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN];
+};
+
+#define NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN 256
+union nvm_iscsi_chap_name {
+ u32 value[NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN / 4];
+ u8 byte[NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN];
+};
+
+#define NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN 16 /* md5 need per RFC1996
+ * is 16 octets
+ */
+union nvm_iscsi_chap_password {
+ u32 value[NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN / 4];
+ u8 byte[NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN];
+};
+
+union nvm_iscsi_lun {
+ u8 byte[8];
+ u32 value[2];
+};
+
+struct nvm_iscsi_generic {
+ u32 ctrl_flags; /* 0x0 */
+#define NVM_ISCSI_CFG_GEN_CHAP_ENABLED BIT(0)
+#define NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED BIT(1)
+#define NVM_ISCSI_CFG_GEN_DHCP_ISCSI_CONFIG_ENABLED BIT(2)
+#define NVM_ISCSI_CFG_GEN_IPV6_ENABLED BIT(3)
+#define NVM_ISCSI_CFG_GEN_IPV4_FALLBACK_ENABLED BIT(4)
+#define NVM_ISCSI_CFG_GEN_ISNS_WORLD_LOGIN BIT(5)
+#define NVM_ISCSI_CFG_GEN_ISNS_SELECTIVE_LOGIN BIT(6)
+#define NVM_ISCSI_CFG_GEN_ADDR_REDIRECT_ENABLED BIT(7)
+#define NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED BIT(8)
+
+ u32 timeout; /* 0x4 */
+#define NVM_ISCSI_CFG_GEN_DHCP_REQUEST_TIMEOUT_MASK 0x0000FFFF
+#define NVM_ISCSI_CFG_GEN_DHCP_REQUEST_TIMEOUT_OFFSET 0
+#define NVM_ISCSI_CFG_GEN_PORT_LOGIN_TIMEOUT_MASK 0xFFFF0000
+#define NVM_ISCSI_CFG_GEN_PORT_LOGIN_TIMEOUT_OFFSET 16
+
+ union nvm_iscsi_dhcp_vendor_id dhcp_vendor_id; /* 0x8 */
+ u32 rsvd[62]; /* 0x108 */
+};
+
+struct nvm_iscsi_initiator {
+ struct nvm_iscsi_initiator_ipv4 ipv4; /* 0x0 */
+ struct nvm_iscsi_initiator_ipv6 ipv6; /* 0x38 */
+
+ union nvm_iscsi_name initiator_name; /* 0x118 */
+ union nvm_iscsi_chap_name chap_name; /* 0x218 */
+ union nvm_iscsi_chap_password chap_password; /* 0x318 */
+
+ u32 generic_cont0; /* 0x398 */
+#define NVM_ISCSI_CFG_INITIATOR_VLAN_MASK 0x0000FFFF
+#define NVM_ISCSI_CFG_INITIATOR_VLAN_OFFSET 0
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_MASK 0x00030000
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_OFFSET 16
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_4 1
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_6 2
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_4_AND_6 3
+
+ u32 ctrl_flags;
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_PRIORITY_V6 BIT(0)
+#define NVM_ISCSI_CFG_INITIATOR_VLAN_ENABLED BIT(1)
+
+ u32 rsvd[116]; /* 0x32C */
+};
+
+struct nvm_iscsi_target {
+ u32 ctrl_flags; /* 0x0 */
+#define NVM_ISCSI_CFG_TARGET_ENABLED BIT(0)
+#define NVM_ISCSI_CFG_BOOT_TIME_LOGIN_STATUS BIT(1)
+
+ u32 generic_cont0; /* 0x4 */
+#define NVM_ISCSI_CFG_TARGET_TCP_PORT_MASK 0x0000FFFF
+#define NVM_ISCSI_CFG_TARGET_TCP_PORT_OFFSET 0
+
+ u32 ip_ver;
+#define NVM_ISCSI_CFG_IPv4 4
+#define NVM_ISCSI_CFG_IPv6 6
+
+ u32 rsvd_1[7]; /* 0x24 */
+ union nvm_iscsi_ipv4_addr ipv4_addr; /* 0x28 */
+ union nvm_iscsi_ipv6_addr ipv6_addr; /* 0x2C */
+ union nvm_iscsi_lun lun; /* 0x3C */
+
+ union nvm_iscsi_name target_name; /* 0x44 */
+ union nvm_iscsi_chap_name chap_name; /* 0x144 */
+ union nvm_iscsi_chap_password chap_password; /* 0x244 */
+
+ u32 rsvd_2[107]; /* 0x2C4 */
+};
+
+struct nvm_iscsi_block {
+ u32 id; /* 0x0 */
+#define NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK 0x0000000F
+#define NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET 0
+#define NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK 0x00000FF0
+#define NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET 4
+#define NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY BIT(0)
+#define NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED BIT(1)
+
+ u32 rsvd_1[5]; /* 0x4 */
+
+ struct nvm_iscsi_generic generic; /* 0x18 */
+ struct nvm_iscsi_initiator initiator; /* 0x218 */
+ struct nvm_iscsi_target target[NUM_OF_ISCSI_TARGET_PER_PF];
+ /* 0x718 */
+
+ u32 rsvd_2[58]; /* 0x1718 */
+ /* total size - 0x1800 - 6K block */
+};
+
+struct nvm_iscsi_cfg {
+ u32 id; /* 0x0 */
+#define NVM_ISCSI_CFG_BLK_VERSION_MINOR_MASK 0x000000FF
+#define NVM_ISCSI_CFG_BLK_VERSION_MAJOR_MASK 0x0000FF00
+#define NVM_ISCSI_CFG_BLK_SIGNATURE_MASK 0xFFFF0000
+#define NVM_ISCSI_CFG_BLK_SIGNATURE 0x49430000 /* IC - Iscsi
+ * Config
+ */
+
+#define NVM_ISCSI_CFG_BLK_VERSION_MAJOR 0
+#define NVM_ISCSI_CFG_BLK_VERSION_MINOR 10
+#define NVM_ISCSI_CFG_BLK_VERSION ((NVM_ISCSI_CFG_BLK_VERSION_MAJOR << 8) | \
+ NVM_ISCSI_CFG_BLK_VERSION_MINOR)
+
+ struct nvm_iscsi_block block[NUM_OF_ISCSI_PF_SUPPORTED]; /* 0x4 */
+};
+
+#endif