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Merge tag '4.4-scsi-mkp' into misc
[firefly-linux-kernel-4.4.55.git] / drivers / scsi / be2iscsi / be_main.c
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 7a6dbfbccec90dd99cb766579b9472bce2d5a1e4..fe0c5143f8e68a6cb3e9618c98258c9e4118e1ae 100644 (file)
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -1,5 +1,5 @@
 /**
- * Copyright (C) 2005 - 2015 Avago Technologies
+ * Copyright (C) 2005 - 2015 Emulex
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or
@@ -12,7 +12,7 @@
  * Contact Information:
  * linux-drivers@avagotech.com
  *
- * Avago Technologies
+ * Emulex
  * 3333 Susan Street
  * Costa Mesa, CA 92626
  */
@@ -50,7 +50,7 @@ static unsigned int enable_msix = 1;
 
 MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR);
 MODULE_VERSION(BUILD_STR);
-MODULE_AUTHOR("Avago Technologies");
+MODULE_AUTHOR("Emulex Corporation");
 MODULE_LICENSE("GPL");
 module_param(be_iopoll_budget, int, 0);
 module_param(enable_msix, int, 0);
@@ -552,7 +552,7 @@ MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
 
 static struct scsi_host_template beiscsi_sht = {
        .module = THIS_MODULE,
-       .name = "Avago Technologies 10Gbe open-iscsi Initiator Driver",
+       .name = "Emulex 10Gbe open-iscsi Initiator Driver",
        .proc_name = DRV_NAME,
        .queuecommand = iscsi_queuecommand,
        .change_queue_depth = scsi_change_queue_depth,
@@ -1198,14 +1198,16 @@ free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
  * alloc_wrb_handle - To allocate a wrb handle
  * @phba: The hba pointer
  * @cid: The cid to use for allocation
+ * @pwrb_context: ptr to ptr to wrb context
  *
  * This happens under session_lock until submission to chip
  */
-struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid)
+struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,
+                                    struct hwi_wrb_context **pcontext)
 {
        struct hwi_wrb_context *pwrb_context;
        struct hwi_controller *phwi_ctrlr;
-       struct wrb_handle *pwrb_handle, *pwrb_handle_tmp;
+       struct wrb_handle *pwrb_handle;
        uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
 
        phwi_ctrlr = phba->phwi_ctrlr;
@@ -1219,9 +1221,9 @@ struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid)
                        pwrb_context->alloc_index = 0;
                else
                        pwrb_context->alloc_index++;
-               pwrb_handle_tmp = pwrb_context->pwrb_handle_base[
-                                               pwrb_context->alloc_index];
-               pwrb_handle->nxt_wrb_index = pwrb_handle_tmp->wrb_index;
+
+               /* Return the context address */
+               *pcontext = pwrb_context;
        } else
                pwrb_handle = NULL;
        return pwrb_handle;
@@ -3184,7 +3186,7 @@ be_sgl_create_contiguous(void *virtual_address,
 {
        WARN_ON(!virtual_address);
        WARN_ON(!physical_address);
-       WARN_ON(!length > 0);
+       WARN_ON(!length);
        WARN_ON(!sgl);
 
        sgl->va = virtual_address;
@@ -4678,6 +4680,7 @@ beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
                           struct beiscsi_offload_params *params)
 {
        struct wrb_handle *pwrb_handle;
+       struct hwi_wrb_context *pwrb_context = NULL;
        struct beiscsi_hba *phba = beiscsi_conn->phba;
        struct iscsi_task *task = beiscsi_conn->task;
        struct iscsi_session *session = task->conn->session;
@@ -4692,14 +4695,17 @@ beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
        beiscsi_cleanup_task(task);
        spin_unlock_bh(&session->back_lock);
 
-       pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid);
+       pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid,
+                                      &pwrb_context);
 
        /* Check for the adapter family */
        if (is_chip_be2_be3r(phba))
                beiscsi_offload_cxn_v0(params, pwrb_handle,
-                                      phba->init_mem);
+                                      phba->init_mem,
+                                      pwrb_context);
        else
-               beiscsi_offload_cxn_v2(params, pwrb_handle);
+               beiscsi_offload_cxn_v2(params, pwrb_handle,
+                                      pwrb_context);
 
        be_dws_le_to_cpu(pwrb_handle->pwrb,
                         sizeof(struct iscsi_target_context_update_wrb));
@@ -4769,7 +4775,8 @@ static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
                        goto free_hndls;
                }
                io_task->pwrb_handle = alloc_wrb_handle(phba,
-                                       beiscsi_conn->beiscsi_conn_cid);
+                                       beiscsi_conn->beiscsi_conn_cid,
+                                       &io_task->pwrb_context);
                if (!io_task->pwrb_handle) {
                        beiscsi_log(phba, KERN_ERR,
                                    BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
@@ -4803,7 +4810,8 @@ static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
                                                        io_task->psgl_handle;
                                io_task->pwrb_handle =
                                        alloc_wrb_handle(phba,
-                                       beiscsi_conn->beiscsi_conn_cid);
+                                       beiscsi_conn->beiscsi_conn_cid,
+                                       &io_task->pwrb_context);
                                if (!io_task->pwrb_handle) {
                                        beiscsi_log(phba, KERN_ERR,
                                                    BEISCSI_LOG_IO |
@@ -4839,7 +4847,8 @@ static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
                        }
                        io_task->pwrb_handle =
                                        alloc_wrb_handle(phba,
-                                       beiscsi_conn->beiscsi_conn_cid);
+                                       beiscsi_conn->beiscsi_conn_cid,
+                                       &io_task->pwrb_context);
                        if (!io_task->pwrb_handle) {
                                beiscsi_log(phba, KERN_ERR,
                                            BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
@@ -4925,7 +4934,12 @@ int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg,
 
        hwi_write_sgl_v2(pwrb, sg, num_sg, io_task);
        AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
-                     io_task->pwrb_handle->nxt_wrb_index);
+                     io_task->pwrb_handle->wrb_index);
+       if (io_task->pwrb_context->plast_wrb)
+               AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
+                             io_task->pwrb_context->plast_wrb,
+                             io_task->pwrb_handle->wrb_index);
+       io_task->pwrb_context->plast_wrb = pwrb;
 
        be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
 
@@ -4982,7 +4996,13 @@ static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
        hwi_write_sgl(pwrb, sg, num_sg, io_task);
 
        AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
-                     io_task->pwrb_handle->nxt_wrb_index);
+                     io_task->pwrb_handle->wrb_index);
+       if (io_task->pwrb_context->plast_wrb)
+               AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
+                             io_task->pwrb_context->plast_wrb,
+                             io_task->pwrb_handle->wrb_index);
+       io_task->pwrb_context->plast_wrb = pwrb;
+
        be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
 
        doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
@@ -5020,7 +5040,13 @@ static int beiscsi_mtask(struct iscsi_task *task)
                AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb,
                              task->data_count);
                AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
-                             io_task->pwrb_handle->nxt_wrb_index);
+                             io_task->pwrb_handle->wrb_index);
+               if (io_task->pwrb_context->plast_wrb)
+                       AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
+                                     io_task->pwrb_context->plast_wrb,
+                                     io_task->pwrb_handle->wrb_index);
+               io_task->pwrb_context->plast_wrb = pwrb;
+
                pwrb_typeoffset = BE_WRB_TYPE_OFFSET;
        } else {
                AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
@@ -5032,7 +5058,13 @@ static int beiscsi_mtask(struct iscsi_task *task)
                AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb,
                              task->data_count);
                AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
-                             io_task->pwrb_handle->nxt_wrb_index);
+                             io_task->pwrb_handle->wrb_index);
+               if (io_task->pwrb_context->plast_wrb)
+                       AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
+                                     io_task->pwrb_context->plast_wrb,
+                                     io_task->pwrb_handle->wrb_index);
+               io_task->pwrb_context->plast_wrb = pwrb;
+
                pwrb_typeoffset = SKH_WRB_TYPE_OFFSET;
        }
 
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