From: Jayamohan Kallickal <jayamohan.kallickal@xxxxxxxxxx>
From: Jayamohan Kallickal <jayamohan.kallickal@xxxxxxxxxx>
This patch enables bsg interface for the be2iscsi driver
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@xxxxxxxxxx>
Signed-off-by: Mike Christie <michaelc@xxxxxxxxxxx>
---
drivers/scsi/be2iscsi/be_cmds.h | 2 +
drivers/scsi/be2iscsi/be_main.c | 76 +++++++++++++++++++++++++++++++++++++++
drivers/scsi/be2iscsi/be_mgmt.c | 70 +++++++++++++++++++++++++++++++++++-
drivers/scsi/be2iscsi/be_mgmt.h | 15 ++++++++
4 files changed, 162 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/be2iscsi/be_cmds.h b/drivers/scsi/be2iscsi/be_cmds.h
index f343ed6..b15de3e 100644
--- a/drivers/scsi/be2iscsi/be_cmds.h
+++ b/drivers/scsi/be2iscsi/be_cmds.h
@@ -822,6 +822,8 @@ struct be_all_if_id {
#define OPCODE_ISCSI_INI_DRIVER_OFFLOAD_SESSION 41
#define OPCODE_ISCSI_INI_DRIVER_INVALIDATE_CONNECTION 42
#define OPCODE_ISCSI_INI_BOOT_GET_BOOT_TARGET 52
+#define OPCODE_COMMON_WRITE_FLASH 96
+#define OPCODE_COMMON_READ_FLASH 97
/* --- CMD_ISCSI_INVALIDATE_CONNECTION_TYPE --- */
#define CMD_ISCSI_COMMAND_INVALIDATE 1
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index e4ad4d1..d27d8b5 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -28,8 +28,11 @@
#include <linux/semaphore.h>
#include <linux/iscsi_boot_sysfs.h>
#include <linux/module.h>
+#include <linux/bsg-lib.h>
#include <scsi/libiscsi.h>
+#include <scsi/scsi_bsg_iscsi.h>
+#include <scsi/scsi_netlink.h>
#include <scsi/scsi_transport_iscsi.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_cmnd.h>
@@ -407,6 +410,8 @@ static struct scsi_host_template beiscsi_sht = {
.max_sectors = BEISCSI_MAX_SECTORS,
.cmd_per_lun = BEISCSI_CMD_PER_LUN,
.use_clustering = ENABLE_CLUSTERING,
+ .vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID,
+
};
static struct scsi_transport_template *beiscsi_scsi_transport;
@@ -4132,6 +4137,76 @@ static int beiscsi_task_xmit(struct iscsi_task *task)
return beiscsi_iotask(task, sg, num_sg, xferlen, writedir);
}
+/**
+ * beiscsi_bsg_request - handle bsg request from ISCSI transport
+ * @job: job to handle
+ */
+static int beiscsi_bsg_request(struct bsg_job *job)
+{
+ struct Scsi_Host *shost;
+ struct beiscsi_hba *phba;
+ struct iscsi_bsg_request *bsg_req = job->request;
+ int rc = -EINVAL;
+ unsigned int tag;
+ struct be_dma_mem nonemb_cmd;
+ struct be_cmd_resp_hdr *resp;
+ struct iscsi_bsg_reply *bsg_reply = job->reply;
+ unsigned short status, extd_status;
+
+ shost = iscsi_job_to_shost(job);
+ phba = iscsi_host_priv(shost);
+
+ switch (bsg_req->msgcode) {
+ case ISCSI_BSG_HST_VENDOR:
+ nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
+ job->request_payload.payload_len,
+ &nonemb_cmd.dma);
+ if (nonemb_cmd.va == NULL) {
+ SE_DEBUG(DBG_LVL_1, "Failed to allocate memory for "
+ "beiscsi_bsg_request\n");
+ return -EIO;
+ }
+ tag = mgmt_vendor_specific_fw_cmd(&phba->ctrl, phba, job,
+ &nonemb_cmd);
+ if (!tag) {
+ SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed\n");
+ pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
+ nonemb_cmd.va, nonemb_cmd.dma);
+ return -EAGAIN;
+ } else
+ wait_event_interruptible(phba->ctrl.mcc_wait[tag],
+ phba->ctrl.mcc_numtag[tag]);
+ extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
+ status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
+ free_mcc_tag(&phba->ctrl, tag);
+ resp = (struct be_cmd_resp_hdr *)nonemb_cmd.va;
+ sg_copy_from_buffer(job->reply_payload.sg_list,
+ job->reply_payload.sg_cnt,
+ nonemb_cmd.va, (resp->response_length
+ + sizeof(*resp)));
+ bsg_reply->reply_payload_rcv_len = resp->response_length;
+ bsg_reply->result = status;
+ bsg_job_done(job, bsg_reply->result,
+ bsg_reply->reply_payload_rcv_len);
+ pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
+ nonemb_cmd.va, nonemb_cmd.dma);
+ if (status || extd_status) {
+ SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed"
+ " status = %d extd_status = %d\n",
+ status, extd_status);
+ return -EIO;
+ }
+ break;
+
+ default:
+ SE_DEBUG(DBG_LVL_1, "Unsupported bsg command: 0x%x\n",
+ bsg_req->msgcode);
+ break;
+ }
+
+ return rc;
+}
+
static void beiscsi_quiesce(struct beiscsi_hba *phba)
{
struct hwi_controller *phwi_ctrlr;
@@ -4444,6 +4519,7 @@ struct iscsi_transport beiscsi_iscsi_transport = {
.ep_poll = beiscsi_ep_poll,
.ep_disconnect = beiscsi_ep_disconnect,
.session_recovery_timedout = iscsi_session_recovery_timedout,
+ .bsg_request = beiscsi_bsg_request,
};
static struct pci_driver beiscsi_pci_driver = {
diff --git a/drivers/scsi/be2iscsi/be_mgmt.c b/drivers/scsi/be2iscsi/be_mgmt.c
index f7d27e9..ccc3852 100644
--- a/drivers/scsi/be2iscsi/be_mgmt.c
+++ b/drivers/scsi/be2iscsi/be_mgmt.c
@@ -17,9 +17,11 @@
* Costa Mesa, CA 92626
*/
+#include <linux/bsg-lib.h>
+#include <scsi/scsi_transport_iscsi.h>
+#include <scsi/scsi_bsg_iscsi.h>
#include "be_mgmt.h"
#include "be_iscsi.h"
-#include <scsi/scsi_transport_iscsi.h>
unsigned int beiscsi_get_boot_target(struct beiscsi_hba *phba)
{
@@ -187,6 +189,72 @@ int mgmt_check_supported_fw(struct be_ctrl_info *ctrl,
return status;
}
+unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
+ struct beiscsi_hba *phba,
+ struct bsg_job *job,
+ struct be_dma_mem *nonemb_cmd)
+{
+ struct be_cmd_resp_hdr *resp;
+ struct be_mcc_wrb *wrb = wrb_from_mccq(phba);
+ struct be_sge *mcc_sge = nonembedded_sgl(wrb);
+ unsigned int tag = 0;
+ struct iscsi_bsg_request *bsg_req = job->request;
+ struct be_bsg_vendor_cmd *req = nonemb_cmd->va;
+ unsigned short region, sector_size, sector, offset;
+
+ nonemb_cmd->size = job->request_payload.payload_len;
+ memset(nonemb_cmd->va, 0, nonemb_cmd->size);
+ resp = nonemb_cmd->va;
+ region = bsg_req->rqst_data.h_vendor.vendor_cmd[1];
+ sector_size = bsg_req->rqst_data.h_vendor.vendor_cmd[2];
+ sector = bsg_req->rqst_data.h_vendor.vendor_cmd[3];
+ offset = bsg_req->rqst_data.h_vendor.vendor_cmd[4];
+ req->region = region;
+ req->sector = sector;
+ req->offset = offset;
+ spin_lock(&ctrl->mbox_lock);
+ memset(wrb, 0, sizeof(*wrb));
+
+ switch (bsg_req->rqst_data.h_vendor.vendor_cmd[0]) {
+ case BEISCSI_WRITE_FLASH:
+ offset = sector * sector_size + offset;
+ be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
+ OPCODE_COMMON_WRITE_FLASH, sizeof(*req));
+ sg_copy_to_buffer(job->request_payload.sg_list,
+ job->request_payload.sg_cnt,
+ nonemb_cmd->va + offset, job->request_len);
+ break;
+ case BEISCSI_READ_FLASH:
+ be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
+ OPCODE_COMMON_READ_FLASH, sizeof(*req));
+ break;
+ default:
+ shost_printk(KERN_WARNING, phba->shost,
+ "Unsupported cmd = 0x%x\n\n", bsg_req->rqst_data.
+ h_vendor.vendor_cmd[0]);
+ spin_unlock(&ctrl->mbox_lock);
+ return -ENOSYS;
+ }
+
+ tag = alloc_mcc_tag(phba);
+ if (!tag) {
+ spin_unlock(&ctrl->mbox_lock);
+ return tag;
+ }
+
+ be_wrb_hdr_prepare(wrb, nonemb_cmd->size, false,
+ job->request_payload.sg_cnt);
+ mcc_sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
+ mcc_sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF);
+ mcc_sge->len = cpu_to_le32(nonemb_cmd->size);
+ wrb->tag0 |= tag;
+
+ be_mcc_notify(phba);
+
+ spin_unlock(&ctrl->mbox_lock);
+ return tag;
+}
+
int mgmt_epfw_cleanup(struct beiscsi_hba *phba, unsigned short chute)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
diff --git a/drivers/scsi/be2iscsi/be_mgmt.h b/drivers/scsi/be2iscsi/be_mgmt.h
index d7fdfce..03400f3 100644
--- a/drivers/scsi/be2iscsi/be_mgmt.h
+++ b/drivers/scsi/be2iscsi/be_mgmt.h
@@ -22,6 +22,7 @@
#include <linux/types.h>
#include <linux/list.h>
+#include <scsi/scsi_bsg_iscsi.h>
#include "be_iscsi.h"
#include "be_main.h"
@@ -98,6 +99,10 @@ unsigned int mgmt_invalidate_icds(struct beiscsi_hba *phba,
struct invalidate_command_table *inv_tbl,
unsigned int num_invalidate, unsigned int cid,
struct be_dma_mem *nonemb_cmd);
+unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
+ struct beiscsi_hba *phba,
+ struct bsg_job *job,
+ struct be_dma_mem *nonemb_cmd);
struct iscsi_invalidate_connection_params_in {
struct be_cmd_req_hdr hdr;
@@ -204,6 +209,13 @@ struct be_mgmt_controller_attributes_resp {
struct mgmt_controller_attributes params;
} __packed;
+struct be_bsg_vendor_cmd {
+ struct be_cmd_req_hdr hdr;
+ unsigned short region;
+ unsigned short offset;
+ unsigned short sector;
+} __packed;
+
/* configuration management */
#define GET_MGMT_CONTROLLER_WS(phba) (phba->pmgmt_ws)
@@ -225,6 +237,9 @@ struct be_mgmt_controller_attributes_resp {
bus_address.u.a32.address_hi; \
}
+#define BEISCSI_WRITE_FLASH 0
+#define BEISCSI_READ_FLASH 1
+
struct beiscsi_endpoint {
struct beiscsi_hba *phba;
struct beiscsi_sess *sess;
--
1.7.7.6
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