[SCSI] lpfc 8.3.24: Add request-firmware support

Add request-firmware support:
- Add support for request_firmware interface for INTF2 SLI4 ports.
- Add ability to reset SLI4 INTF2 ports.

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index dd911d6d0ee5..fcfa8c8cfb67 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -13500,6 +13500,96 @@ out:
 }
 
 /**
+ * lpfc_wr_object - write an object to the firmware
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @dmabuf_list: list of dmabufs to write to the port.
+ * @size: the total byte value of the objects to write to the port.
+ * @offset: the current offset to be used to start the transfer.
+ *
+ * This routine will create a wr_object mailbox command to send to the port.
+ * the mailbox command will be constructed using the dma buffers described in
+ * @dmabuf_list to create a list of BDEs. This routine will fill in as many
+ * BDEs that the imbedded mailbox can support. The @offset variable will be
+ * used to indicate the starting offset of the transfer and will also return
+ * the offset after the write object mailbox has completed. @size is used to
+ * determine the end of the object and whether the eof bit should be set.
+ *
+ * Return 0 is successful and offset will contain the the new offset to use
+ * for the next write.
+ * Return negative value for error cases.
+ **/
+int
+lpfc_wr_object(struct lpfc_hba *phba, struct list_head *dmabuf_list,
+               uint32_t size, uint32_t *offset)
+{
+        struct lpfc_mbx_wr_object *wr_object;
+        LPFC_MBOXQ_t *mbox;
+        int rc = 0, i = 0;
+        uint32_t shdr_status, shdr_add_status;
+        uint32_t mbox_tmo;
+        union lpfc_sli4_cfg_shdr *shdr;
+        struct lpfc_dmabuf *dmabuf;
+        uint32_t written = 0;
+
+        mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mbox)
+                return -ENOMEM;
+
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+                        LPFC_MBOX_OPCODE_WRITE_OBJECT,
+                        sizeof(struct lpfc_mbx_wr_object) -
+                        sizeof(struct lpfc_sli4_cfg_mhdr), LPFC_SLI4_MBX_EMBED);
+
+        wr_object = (struct lpfc_mbx_wr_object *)&mbox->u.mqe.un.wr_object;
+        wr_object->u.request.write_offset = *offset;
+        sprintf((uint8_t *)wr_object->u.request.object_name, "/");
+        wr_object->u.request.object_name[0] =
+                cpu_to_le32(wr_object->u.request.object_name[0]);
+        bf_set(lpfc_wr_object_eof, &wr_object->u.request, 0);
+        list_for_each_entry(dmabuf, dmabuf_list, list) {
+                if (i >= LPFC_MBX_WR_CONFIG_MAX_BDE || written >= size)
+                        break;
+                wr_object->u.request.bde[i].addrLow = putPaddrLow(dmabuf->phys);
+                wr_object->u.request.bde[i].addrHigh =
+                        putPaddrHigh(dmabuf->phys);
+                if (written + SLI4_PAGE_SIZE >= size) {
+                        wr_object->u.request.bde[i].tus.f.bdeSize =
+                                (size - written);
+                        written += (size - written);
+                        bf_set(lpfc_wr_object_eof, &wr_object->u.request, 1);
+                } else {
+                        wr_object->u.request.bde[i].tus.f.bdeSize =
+                                SLI4_PAGE_SIZE;
+                        written += SLI4_PAGE_SIZE;
+                }
+                i++;
+        }
+        wr_object->u.request.bde_count = i;
+        bf_set(lpfc_wr_object_write_length, &wr_object->u.request, written);
+        if (!phba->sli4_hba.intr_enable)
+                rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+        else {
+                mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
+                rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+        }
+        /* The IOCTL status is embedded in the mailbox subheader. */
+        shdr = (union lpfc_sli4_cfg_shdr *) &wr_object->header.cfg_shdr;
+        shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+        shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+        if (rc != MBX_TIMEOUT)
+                mempool_free(mbox, phba->mbox_mem_pool);
+        if (shdr_status || shdr_add_status || rc) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "3025 Write Object mailbox failed with "
+                                "status x%x add_status x%x, mbx status x%x\n",
+                                shdr_status, shdr_add_status, rc);
+                rc = -ENXIO;
+        } else
+                *offset += wr_object->u.response.actual_write_length;
+        return rc;
+}
+
+/**
  * lpfc_cleanup_pending_mbox - Free up vport discovery mailbox commands.
  * @vport: pointer to vport data structure.
  *