--- /dev/null
+/*
+ * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ *
+ * Linux driver for Brocade Fibre Channel Host Bus Adapter.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License (GPL) Version 2 as
+ * published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/uaccess.h>
+#include "bfad_drv.h"
+#include "bfad_im.h"
+#include "bfad_bsg.h"
+
+BFA_TRC_FILE(LDRV, BSG);
+
+/* bfad_im_bsg_get_kobject - increment the bfa refcnt */
+static void
+bfad_im_bsg_get_kobject(struct fc_bsg_job *job)
+{
+ struct Scsi_Host *shost = job->shost;
+ unsigned long flags;
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ __module_get(shost->dma_dev->driver->owner);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+}
+
+/* bfad_im_bsg_put_kobject - decrement the bfa refcnt */
+static void
+bfad_im_bsg_put_kobject(struct fc_bsg_job *job)
+{
+ struct Scsi_Host *shost = job->shost;
+ unsigned long flags;
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ module_put(shost->dma_dev->driver->owner);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+}
+
+static int
+bfad_iocmd_ioc_get_info(struct bfad_s *bfad, void *cmd)
+{
+ int i;
+ struct bfa_bsg_ioc_info_s *iocmd = (struct bfa_bsg_ioc_info_s *)cmd;
+ struct bfad_im_port_s *im_port;
+ struct bfa_port_attr_s pattr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ bfa_fcport_get_attr(&bfad->bfa, &pattr);
+ iocmd->nwwn = pattr.nwwn;
+ iocmd->pwwn = pattr.pwwn;
+ iocmd->ioc_type = bfa_get_type(&bfad->bfa);
+ iocmd->mac = bfa_get_mac(&bfad->bfa);
+ iocmd->factory_mac = bfa_get_mfg_mac(&bfad->bfa);
+ bfa_get_adapter_serial_num(&bfad->bfa, iocmd->serialnum);
+ iocmd->factorynwwn = pattr.factorynwwn;
+ iocmd->factorypwwn = pattr.factorypwwn;
+ im_port = bfad->pport.im_port;
+ iocmd->host = im_port->shost->host_no;
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+ strcpy(iocmd->name, bfad->adapter_name);
+ strcpy(iocmd->port_name, bfad->port_name);
+ strcpy(iocmd->hwpath, bfad->pci_name);
+
+ /* set adapter hw path */
+ strcpy(iocmd->adapter_hwpath, bfad->pci_name);
+ i = strlen(iocmd->adapter_hwpath) - 1;
+ while (iocmd->adapter_hwpath[i] != '.')
+ i--;
+ iocmd->adapter_hwpath[i] = '\0';
+ iocmd->status = BFA_STATUS_OK;
+ return 0;
+}
+
+static int
+bfad_iocmd_ioc_get_attr(struct bfad_s *bfad, void *cmd)
+{
+ struct bfa_bsg_ioc_attr_s *iocmd = (struct bfa_bsg_ioc_attr_s *)cmd;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ bfa_ioc_get_attr(&bfad->bfa.ioc, &iocmd->ioc_attr);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+ /* fill in driver attr info */
+ strcpy(iocmd->ioc_attr.driver_attr.driver, BFAD_DRIVER_NAME);
+ strncpy(iocmd->ioc_attr.driver_attr.driver_ver,
+ BFAD_DRIVER_VERSION, BFA_VERSION_LEN);
+ strcpy(iocmd->ioc_attr.driver_attr.fw_ver,
+ iocmd->ioc_attr.adapter_attr.fw_ver);
+ strcpy(iocmd->ioc_attr.driver_attr.bios_ver,
+ iocmd->ioc_attr.adapter_attr.optrom_ver);
+
+ /* copy chip rev info first otherwise it will be overwritten */
+ memcpy(bfad->pci_attr.chip_rev, iocmd->ioc_attr.pci_attr.chip_rev,
+ sizeof(bfad->pci_attr.chip_rev));
+ memcpy(&iocmd->ioc_attr.pci_attr, &bfad->pci_attr,
+ sizeof(struct bfa_ioc_pci_attr_s));
+
+ iocmd->status = BFA_STATUS_OK;
+ return 0;
+}
+
+static int
+bfad_iocmd_port_get_attr(struct bfad_s *bfad, void *cmd)
+{
+ struct bfa_bsg_port_attr_s *iocmd = (struct bfa_bsg_port_attr_s *)cmd;
+ struct bfa_lport_attr_s port_attr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ bfa_fcport_get_attr(&bfad->bfa, &iocmd->attr);
+ bfa_fcs_lport_get_attr(&bfad->bfa_fcs.fabric.bport, &port_attr);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+ if (iocmd->attr.topology != BFA_PORT_TOPOLOGY_NONE)
+ iocmd->attr.pid = port_attr.pid;
+ else
+ iocmd->attr.pid = 0;
+
+ iocmd->attr.port_type = port_attr.port_type;
+ iocmd->attr.loopback = port_attr.loopback;
+ iocmd->attr.authfail = port_attr.authfail;
+ strncpy(iocmd->attr.port_symname.symname,
+ port_attr.port_cfg.sym_name.symname,
+ sizeof(port_attr.port_cfg.sym_name.symname));
+
+ iocmd->status = BFA_STATUS_OK;
+ return 0;
+}
+
+static int
+bfad_iocmd_lport_get_attr(struct bfad_s *bfad, void *cmd)
+{
+ struct bfa_fcs_lport_s *fcs_port;
+ struct bfa_bsg_lport_attr_s *iocmd = (struct bfa_bsg_lport_attr_s *)cmd;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ fcs_port = bfa_fcs_lookup_port(&bfad->bfa_fcs,
+ iocmd->vf_id, iocmd->pwwn);
+ if (fcs_port == NULL) {
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ iocmd->status = BFA_STATUS_UNKNOWN_LWWN;
+ goto out;
+ }
+
+ bfa_fcs_lport_get_attr(fcs_port, &iocmd->port_attr);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ iocmd->status = BFA_STATUS_OK;
+out:
+ return 0;
+}
+
+static int
+bfad_iocmd_rport_get_addr(struct bfad_s *bfad, void *cmd)
+{
+ struct bfa_bsg_rport_scsi_addr_s *iocmd =
+ (struct bfa_bsg_rport_scsi_addr_s *)cmd;
+ struct bfa_fcs_lport_s *fcs_port;
+ struct bfa_fcs_itnim_s *fcs_itnim;
+ struct bfad_itnim_s *drv_itnim;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ fcs_port = bfa_fcs_lookup_port(&bfad->bfa_fcs,
+ iocmd->vf_id, iocmd->pwwn);
+ if (fcs_port == NULL) {
+ bfa_trc(bfad, 0);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ iocmd->status = BFA_STATUS_UNKNOWN_LWWN;
+ goto out;
+ }
+
+ fcs_itnim = bfa_fcs_itnim_lookup(fcs_port, iocmd->rpwwn);
+ if (fcs_itnim == NULL) {
+ bfa_trc(bfad, 0);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ iocmd->status = BFA_STATUS_UNKNOWN_RWWN;
+ goto out;
+ }
+
+ drv_itnim = fcs_itnim->itnim_drv;
+
+ if (drv_itnim && drv_itnim->im_port)
+ iocmd->host = drv_itnim->im_port->shost->host_no;
+ else {
+ bfa_trc(bfad, 0);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ iocmd->status = BFA_STATUS_UNKNOWN_RWWN;
+ goto out;
+ }
+
+ iocmd->target = drv_itnim->scsi_tgt_id;
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+ iocmd->bus = 0;
+ iocmd->lun = 0;
+ iocmd->status = BFA_STATUS_OK;
+out:
+ return 0;
+}
+
+static int
+bfad_iocmd_fabric_get_lports(struct bfad_s *bfad, void *cmd,
+ unsigned int payload_len)
+{
+ struct bfa_bsg_fabric_get_lports_s *iocmd =
+ (struct bfa_bsg_fabric_get_lports_s *)cmd;
+ bfa_fcs_vf_t *fcs_vf;
+ uint32_t nports = iocmd->nports;
+ unsigned long flags;
+ void *iocmd_bufptr;
+
+ if (nports == 0) {
+ iocmd->status = BFA_STATUS_EINVAL;
+ goto out;
+ }
+
+ if (bfad_chk_iocmd_sz(payload_len,
+ sizeof(struct bfa_bsg_fabric_get_lports_s),
+ sizeof(wwn_t[iocmd->nports])) != BFA_STATUS_OK) {
+ iocmd->status = BFA_STATUS_VERSION_FAIL;
+ goto out;
+ }
+
+ iocmd_bufptr = (char *)iocmd +
+ sizeof(struct bfa_bsg_fabric_get_lports_s);
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ fcs_vf = bfa_fcs_vf_lookup(&bfad->bfa_fcs, iocmd->vf_id);
+ if (fcs_vf == NULL) {
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ iocmd->status = BFA_STATUS_UNKNOWN_VFID;
+ goto out;
+ }
+ bfa_fcs_vf_get_ports(fcs_vf, (wwn_t *)iocmd_bufptr, &nports);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+ iocmd->nports = nports;
+ iocmd->status = BFA_STATUS_OK;
+out:
+ return 0;
+}
+
+static int
+bfad_iocmd_itnim_get_attr(struct bfad_s *bfad, void *cmd)
+{
+ struct bfa_bsg_itnim_attr_s *iocmd = (struct bfa_bsg_itnim_attr_s *)cmd;
+ struct bfa_fcs_lport_s *fcs_port;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ fcs_port = bfa_fcs_lookup_port(&bfad->bfa_fcs,
+ iocmd->vf_id, iocmd->lpwwn);
+ if (!fcs_port)
+ iocmd->status = BFA_STATUS_UNKNOWN_LWWN;
+ else
+ iocmd->status = bfa_fcs_itnim_attr_get(fcs_port,
+ iocmd->rpwwn, &iocmd->attr);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ return 0;
+}
+
+static int
+bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
+ unsigned int payload_len)
+{
+ int rc = EINVAL;
+
+ switch (cmd) {
+ case IOCMD_IOC_GET_INFO:
+ rc = bfad_iocmd_ioc_get_info(bfad, iocmd);
+ break;
+ case IOCMD_IOC_GET_ATTR:
+ rc = bfad_iocmd_ioc_get_attr(bfad, iocmd);
+ break;
+ case IOCMD_PORT_GET_ATTR:
+ rc = bfad_iocmd_port_get_attr(bfad, iocmd);
+ break;
+ case IOCMD_LPORT_GET_ATTR:
+ rc = bfad_iocmd_lport_get_attr(bfad, iocmd);
+ break;
+ case IOCMD_RPORT_GET_ADDR:
+ rc = bfad_iocmd_rport_get_addr(bfad, iocmd);
+ break;
+ case IOCMD_FABRIC_GET_LPORTS:
+ rc = bfad_iocmd_fabric_get_lports(bfad, iocmd, payload_len);
+ break;
+ case IOCMD_ITNIM_GET_ATTR:
+ rc = bfad_iocmd_itnim_get_attr(bfad, iocmd);
+ break;
+ default:
+ rc = EINVAL;
+ break;
+ }
+ return -rc;
+}
+
+static int
+bfad_im_bsg_vendor_request(struct fc_bsg_job *job)
+{
+ uint32_t vendor_cmd = job->request->rqst_data.h_vendor.vendor_cmd[0];
+ struct bfad_im_port_s *im_port =
+ (struct bfad_im_port_s *) job->shost->hostdata[0];
+ struct bfad_s *bfad = im_port->bfad;
+ void *payload_kbuf;
+ int rc = -EINVAL;
+
+ /* Allocate a temp buffer to hold the passed in user space command */
+ payload_kbuf = kzalloc(job->request_payload.payload_len, GFP_KERNEL);
+ if (!payload_kbuf) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ /* Copy the sg_list passed in to a linear buffer: holds the cmnd data */
+ sg_copy_to_buffer(job->request_payload.sg_list,
+ job->request_payload.sg_cnt, payload_kbuf,
+ job->request_payload.payload_len);
+
+ /* Invoke IOCMD handler - to handle all the vendor command requests */
+ rc = bfad_iocmd_handler(bfad, vendor_cmd, payload_kbuf,
+ job->request_payload.payload_len);
+ if (rc != BFA_STATUS_OK)
+ goto error;
+
+ /* Copy the response data to the job->reply_payload sg_list */
+ sg_copy_from_buffer(job->reply_payload.sg_list,
+ job->reply_payload.sg_cnt,
+ payload_kbuf,
+ job->reply_payload.payload_len);
+
+ /* free the command buffer */
+ kfree(payload_kbuf);
+
+ /* Fill the BSG job reply data */
+ job->reply_len = job->reply_payload.payload_len;
+ job->reply->reply_payload_rcv_len = job->reply_payload.payload_len;
+ job->reply->result = rc;
+
+ job->job_done(job);
+ return rc;
+error:
+ /* free the command buffer */
+ kfree(payload_kbuf);
+out:
+ job->reply->result = rc;
+ job->reply_len = sizeof(uint32_t);
+ job->reply->reply_payload_rcv_len = 0;
+ return rc;
+}
+
+/* FC passthru call backs */
+u64
+bfad_fcxp_get_req_sgaddr_cb(void *bfad_fcxp, int sgeid)
+{
+ struct bfad_fcxp *drv_fcxp = bfad_fcxp;
+ struct bfa_sge_s *sge;
+ u64 addr;
+
+ sge = drv_fcxp->req_sge + sgeid;
+ addr = (u64)(size_t) sge->sg_addr;
+ return addr;
+}
+
+u32
+bfad_fcxp_get_req_sglen_cb(void *bfad_fcxp, int sgeid)
+{
+ struct bfad_fcxp *drv_fcxp = bfad_fcxp;
+ struct bfa_sge_s *sge;
+
+ sge = drv_fcxp->req_sge + sgeid;
+ return sge->sg_len;
+}
+
+u64
+bfad_fcxp_get_rsp_sgaddr_cb(void *bfad_fcxp, int sgeid)
+{
+ struct bfad_fcxp *drv_fcxp = bfad_fcxp;
+ struct bfa_sge_s *sge;
+ u64 addr;
+
+ sge = drv_fcxp->rsp_sge + sgeid;
+ addr = (u64)(size_t) sge->sg_addr;
+ return addr;
+}
+
+u32
+bfad_fcxp_get_rsp_sglen_cb(void *bfad_fcxp, int sgeid)
+{
+ struct bfad_fcxp *drv_fcxp = bfad_fcxp;
+ struct bfa_sge_s *sge;
+
+ sge = drv_fcxp->rsp_sge + sgeid;
+ return sge->sg_len;
+}
+
+void
+bfad_send_fcpt_cb(void *bfad_fcxp, struct bfa_fcxp_s *fcxp, void *cbarg,
+ bfa_status_t req_status, u32 rsp_len, u32 resid_len,
+ struct fchs_s *rsp_fchs)
+{
+ struct bfad_fcxp *drv_fcxp = bfad_fcxp;
+
+ drv_fcxp->req_status = req_status;
+ drv_fcxp->rsp_len = rsp_len;
+
+ /* bfa_fcxp will be automatically freed by BFA */
+ drv_fcxp->bfa_fcxp = NULL;
+ complete(&drv_fcxp->comp);
+}
+
+struct bfad_buf_info *
+bfad_fcxp_map_sg(struct bfad_s *bfad, void *payload_kbuf,
+ uint32_t payload_len, uint32_t *num_sgles)
+{
+ struct bfad_buf_info *buf_base, *buf_info;
+ struct bfa_sge_s *sg_table;
+ int sge_num = 1;
+
+ buf_base = kzalloc((sizeof(struct bfad_buf_info) +
+ sizeof(struct bfa_sge_s)) * sge_num, GFP_KERNEL);
+ if (!buf_base)
+ return NULL;
+
+ sg_table = (struct bfa_sge_s *) (((uint8_t *)buf_base) +
+ (sizeof(struct bfad_buf_info) * sge_num));
+
+ /* Allocate dma coherent memory */
+ buf_info = buf_base;
+ buf_info->size = payload_len;
+ buf_info->virt = dma_alloc_coherent(&bfad->pcidev->dev, buf_info->size,
+ &buf_info->phys, GFP_KERNEL);
+ if (!buf_info->virt)
+ goto out_free_mem;
+
+ /* copy the linear bsg buffer to buf_info */
+ memset(buf_info->virt, 0, buf_info->size);
+ memcpy(buf_info->virt, payload_kbuf, buf_info->size);
+
+ /*
+ * Setup SG table
+ */
+ sg_table->sg_len = buf_info->size;
+ sg_table->sg_addr = (void *)(size_t) buf_info->phys;
+
+ *num_sgles = sge_num;
+
+ return buf_base;
+
+out_free_mem:
+ kfree(buf_base);
+ return NULL;
+}
+
+void
+bfad_fcxp_free_mem(struct bfad_s *bfad, struct bfad_buf_info *buf_base,
+ uint32_t num_sgles)
+{
+ int i;
+ struct bfad_buf_info *buf_info = buf_base;
+
+ if (buf_base) {
+ for (i = 0; i < num_sgles; buf_info++, i++) {
+ if (buf_info->virt != NULL)
+ dma_free_coherent(&bfad->pcidev->dev,
+ buf_info->size, buf_info->virt,
+ buf_info->phys);
+ }
+ kfree(buf_base);
+ }
+}
+
+int
+bfad_fcxp_bsg_send(struct fc_bsg_job *job, struct bfad_fcxp *drv_fcxp,
+ bfa_bsg_fcpt_t *bsg_fcpt)
+{
+ struct bfa_fcxp_s *hal_fcxp;
+ struct bfad_s *bfad = drv_fcxp->port->bfad;
+ unsigned long flags;
+ uint8_t lp_tag;
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+
+ /* Allocate bfa_fcxp structure */
+ hal_fcxp = bfa_fcxp_alloc(drv_fcxp, &bfad->bfa,
+ drv_fcxp->num_req_sgles,
+ drv_fcxp->num_rsp_sgles,
+ bfad_fcxp_get_req_sgaddr_cb,
+ bfad_fcxp_get_req_sglen_cb,
+ bfad_fcxp_get_rsp_sgaddr_cb,
+ bfad_fcxp_get_rsp_sglen_cb);
+ if (!hal_fcxp) {
+ bfa_trc(bfad, 0);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ return BFA_STATUS_ENOMEM;
+ }
+
+ drv_fcxp->bfa_fcxp = hal_fcxp;
+
+ lp_tag = bfa_lps_get_tag_from_pid(&bfad->bfa, bsg_fcpt->fchs.s_id);
+
+ bfa_fcxp_send(hal_fcxp, drv_fcxp->bfa_rport, bsg_fcpt->vf_id, lp_tag,
+ bsg_fcpt->cts, bsg_fcpt->cos,
+ job->request_payload.payload_len,
+ &bsg_fcpt->fchs, bfad_send_fcpt_cb, bfad,
+ job->reply_payload.payload_len, bsg_fcpt->tsecs);
+
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+ return BFA_STATUS_OK;
+}
+
+int
+bfad_im_bsg_els_ct_request(struct fc_bsg_job *job)
+{
+ struct bfa_bsg_data *bsg_data;
+ struct bfad_im_port_s *im_port =
+ (struct bfad_im_port_s *) job->shost->hostdata[0];
+ struct bfad_s *bfad = im_port->bfad;
+ bfa_bsg_fcpt_t *bsg_fcpt;
+ struct bfad_fcxp *drv_fcxp;
+ struct bfa_fcs_lport_s *fcs_port;
+ struct bfa_fcs_rport_s *fcs_rport;
+ uint32_t command_type = job->request->msgcode;
+ unsigned long flags;
+ struct bfad_buf_info *rsp_buf_info;
+ void *req_kbuf = NULL, *rsp_kbuf = NULL;
+ int rc = -EINVAL;
+
+ job->reply_len = sizeof(uint32_t); /* Atleast uint32_t reply_len */
+ job->reply->reply_payload_rcv_len = 0;
+
+ /* Get the payload passed in from userspace */
+ bsg_data = (struct bfa_bsg_data *) (((char *)job->request) +
+ sizeof(struct fc_bsg_request));
+ if (bsg_data == NULL)
+ goto out;
+
+ /*
+ * Allocate buffer for bsg_fcpt and do a copy_from_user op for payload
+ * buffer of size bsg_data->payload_len
+ */
+ bsg_fcpt = (struct bfa_bsg_fcpt_s *)
+ kzalloc(bsg_data->payload_len, GFP_KERNEL);
+ if (!bsg_fcpt)
+ goto out;
+
+ if (copy_from_user((uint8_t *)bsg_fcpt, bsg_data->payload,
+ bsg_data->payload_len)) {
+ kfree(bsg_fcpt);
+ goto out;
+ }
+
+ drv_fcxp = kzalloc(sizeof(struct bfad_fcxp), GFP_KERNEL);
+ if (drv_fcxp == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ fcs_port = bfa_fcs_lookup_port(&bfad->bfa_fcs, bsg_fcpt->vf_id,
+ bsg_fcpt->lpwwn);
+ if (fcs_port == NULL) {
+ bsg_fcpt->status = BFA_STATUS_UNKNOWN_LWWN;
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ goto out_free_mem;
+ }
+
+ /* Check if the port is online before sending FC Passthru cmd */
+ if (!bfa_fcs_lport_is_online(fcs_port)) {
+ bsg_fcpt->status = BFA_STATUS_PORT_OFFLINE;
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ goto out_free_mem;
+ }
+
+ drv_fcxp->port = fcs_port->bfad_port;
+
+ if (drv_fcxp->port->bfad == 0)
+ drv_fcxp->port->bfad = bfad;
+
+ /* Fetch the bfa_rport - if nexus needed */
+ if (command_type == FC_BSG_HST_ELS_NOLOGIN ||
+ command_type == FC_BSG_HST_CT) {
+ /* BSG HST commands: no nexus needed */
+ drv_fcxp->bfa_rport = NULL;
+
+ } else if (command_type == FC_BSG_RPT_ELS ||
+ command_type == FC_BSG_RPT_CT) {
+ /* BSG RPT commands: nexus needed */
+ fcs_rport = bfa_fcs_lport_get_rport_by_pwwn(fcs_port,
+ bsg_fcpt->dpwwn);
+ if (fcs_rport == NULL) {
+ bsg_fcpt->status = BFA_STATUS_UNKNOWN_RWWN;
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ goto out_free_mem;
+ }
+
+ drv_fcxp->bfa_rport = fcs_rport->bfa_rport;
+
+ } else { /* Unknown BSG msgcode; return -EINVAL */
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ goto out_free_mem;
+ }
+
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+ /* allocate memory for req / rsp buffers */
+ req_kbuf = kzalloc(job->request_payload.payload_len, GFP_KERNEL);
+ if (!req_kbuf) {
+ printk(KERN_INFO "bfa %s: fcpt request buffer alloc failed\n",
+ bfad->pci_name);
+ rc = -ENOMEM;
+ goto out_free_mem;
+ }
+
+ rsp_kbuf = kzalloc(job->reply_payload.payload_len, GFP_KERNEL);
+ if (!rsp_kbuf) {
+ printk(KERN_INFO "bfa %s: fcpt response buffer alloc failed\n",
+ bfad->pci_name);
+ rc = -ENOMEM;
+ goto out_free_mem;
+ }
+
+ /* map req sg - copy the sg_list passed in to the linear buffer */
+ sg_copy_to_buffer(job->request_payload.sg_list,
+ job->request_payload.sg_cnt, req_kbuf,
+ job->request_payload.payload_len);
+
+ drv_fcxp->reqbuf_info = bfad_fcxp_map_sg(bfad, req_kbuf,
+ job->request_payload.payload_len,
+ &drv_fcxp->num_req_sgles);
+ if (!drv_fcxp->reqbuf_info) {
+ printk(KERN_INFO "bfa %s: fcpt request fcxp_map_sg failed\n",
+ bfad->pci_name);
+ rc = -ENOMEM;
+ goto out_free_mem;
+ }
+
+ drv_fcxp->req_sge = (struct bfa_sge_s *)
+ (((uint8_t *)drv_fcxp->reqbuf_info) +
+ (sizeof(struct bfad_buf_info) *
+ drv_fcxp->num_req_sgles));
+
+ /* map rsp sg */
+ drv_fcxp->rspbuf_info = bfad_fcxp_map_sg(bfad, rsp_kbuf,
+ job->reply_payload.payload_len,
+ &drv_fcxp->num_rsp_sgles);
+ if (!drv_fcxp->rspbuf_info) {
+ printk(KERN_INFO "bfa %s: fcpt response fcxp_map_sg failed\n",
+ bfad->pci_name);
+ rc = -ENOMEM;
+ goto out_free_mem;
+ }
+
+ rsp_buf_info = (struct bfad_buf_info *)drv_fcxp->rspbuf_info;
+ drv_fcxp->rsp_sge = (struct bfa_sge_s *)
+ (((uint8_t *)drv_fcxp->rspbuf_info) +
+ (sizeof(struct bfad_buf_info) *
+ drv_fcxp->num_rsp_sgles));
+
+ /* fcxp send */
+ init_completion(&drv_fcxp->comp);
+ rc = bfad_fcxp_bsg_send(job, drv_fcxp, bsg_fcpt);
+ if (rc == BFA_STATUS_OK) {
+ wait_for_completion(&drv_fcxp->comp);
+ bsg_fcpt->status = drv_fcxp->req_status;
+ } else {
+ bsg_fcpt->status = rc;
+ goto out_free_mem;
+ }
+
+ /* fill the job->reply data */
+ if (drv_fcxp->req_status == BFA_STATUS_OK) {
+ job->reply_len = drv_fcxp->rsp_len;
+ job->reply->reply_payload_rcv_len = drv_fcxp->rsp_len;
+ job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
+ } else {
+ job->reply->reply_payload_rcv_len =
+ sizeof(struct fc_bsg_ctels_reply);
+ job->reply_len = sizeof(uint32_t);
+ job->reply->reply_data.ctels_reply.status =
+ FC_CTELS_STATUS_REJECT;
+ }
+
+ /* Copy the response data to the reply_payload sg list */
+ sg_copy_from_buffer(job->reply_payload.sg_list,
+ job->reply_payload.sg_cnt,
+ (uint8_t *)rsp_buf_info->virt,
+ job->reply_payload.payload_len);
+
+out_free_mem:
+ bfad_fcxp_free_mem(bfad, drv_fcxp->rspbuf_info,
+ drv_fcxp->num_rsp_sgles);
+ bfad_fcxp_free_mem(bfad, drv_fcxp->reqbuf_info,
+ drv_fcxp->num_req_sgles);
+ kfree(req_kbuf);
+ kfree(rsp_kbuf);
+
+ /* Need a copy to user op */
+ if (copy_to_user(bsg_data->payload, (void *) bsg_fcpt,
+ bsg_data->payload_len))
+ rc = -EIO;
+
+ kfree(bsg_fcpt);
+ kfree(drv_fcxp);
+out:
+ job->reply->result = rc;
+
+ if (rc == BFA_STATUS_OK)
+ job->job_done(job);
+
+ return rc;
+}
+
+int
+bfad_im_bsg_request(struct fc_bsg_job *job)
+{
+ uint32_t rc = BFA_STATUS_OK;
+
+ /* Increment the bfa module refcnt - if bsg request is in service */
+ bfad_im_bsg_get_kobject(job);
+
+ switch (job->request->msgcode) {
+ case FC_BSG_HST_VENDOR:
+ /* Process BSG HST Vendor requests */
+ rc = bfad_im_bsg_vendor_request(job);
+ break;
+ case FC_BSG_HST_ELS_NOLOGIN:
+ case FC_BSG_RPT_ELS:
+ case FC_BSG_HST_CT:
+ case FC_BSG_RPT_CT:
+ /* Process BSG ELS/CT commands */
+ rc = bfad_im_bsg_els_ct_request(job);
+ break;
+ default:
+ job->reply->result = rc = -EINVAL;
+ job->reply->reply_payload_rcv_len = 0;
+ break;
+ }
+
+ /* Decrement the bfa module refcnt - on completion of bsg request */
+ bfad_im_bsg_put_kobject(job);
+
+ return rc;
+}
+
+int
+bfad_im_bsg_timeout(struct fc_bsg_job *job)
+{
+ /* Don't complete the BSG job request - return -EAGAIN
+ * to reset bsg job timeout : for ELS/CT pass thru we
+ * already have timer to track the request.
+ */
+ return -EAGAIN;
+}
projects / firefly-linux-kernel-4.4.55.git / commitdiff