bnx2x, bnx2fc: Use per port max exchange resources

The firmware supports a maximum of 4K FCoE exchanges. In 4-port devices,
or when working in multi-function mode, this resource needs to be distributed
between the various possible FCoE functions.

This information needs to be calculated by bnx2x and propagated into bnx2fc
via cnic. bnx2fc can then use this value to calculate corresponding xid
resources instead of using global constants.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 9 deletions

diff --git a/drivers/scsi/bnx2fc/bnx2fc_hwi.c b/drivers/scsi/bnx2fc/bnx2fc_hwi.c
index 85ea98a80f40..50510ffe1bf5 100644
--- a/drivers/scsi/bnx2fc/bnx2fc_hwi.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_hwi.c
@@ -77,7 +77,7 @@ int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba)
 	fcoe_init1.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
 					FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
 
-	fcoe_init1.num_tasks = BNX2FC_MAX_TASKS;
+	fcoe_init1.num_tasks = hba->max_tasks;
 	fcoe_init1.sq_num_wqes = BNX2FC_SQ_WQES_MAX;
 	fcoe_init1.rq_num_wqes = BNX2FC_RQ_WQES_MAX;
 	fcoe_init1.rq_buffer_log_size = BNX2FC_RQ_BUF_LOG_SZ;
@@ -697,7 +697,7 @@ static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
 			err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
 
 
-		if (xid > BNX2FC_MAX_XID) {
+		if (xid > hba->max_xid) {
 			BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n",
 				   xid);
 			goto ret_err_rqe;
@@ -815,7 +815,7 @@ ret_err_rqe:
 		BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
 			err_entry->data.tx_buf_off, err_entry->data.rx_buf_off);
 
-		if (xid > BNX2FC_MAX_XID) {
+		if (xid > hba->max_xid) {
 			BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n", xid);
 			goto ret_warn_rqe;
 		}
@@ -880,7 +880,7 @@ void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe)
 
 	spin_lock_bh(&tgt->tgt_lock);
 	xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
-	if (xid >= BNX2FC_MAX_TASKS) {
+	if (xid >= hba->max_tasks) {
 		printk(KERN_ERR PFX "ERROR:xid out of range\n");
 		spin_unlock_bh(&tgt->tgt_lock);
 		return;
@@ -1842,6 +1842,7 @@ int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
 	int rc = 0;
 	struct regpair *task_ctx_bdt;
 	dma_addr_t addr;
+	int task_ctx_arr_sz;
 	int i;
 
 	/*
@@ -1865,7 +1866,8 @@ int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
 	 * Allocate task_ctx which is an array of pointers pointing to
 	 * a page containing 32 task contexts
 	 */
-	hba->task_ctx = kzalloc((BNX2FC_TASK_CTX_ARR_SZ * sizeof(void *)),
+	task_ctx_arr_sz = (hba->max_tasks / BNX2FC_TASKS_PER_PAGE);
+	hba->task_ctx = kzalloc((task_ctx_arr_sz * sizeof(void *)),
 				 GFP_KERNEL);
 	if (!hba->task_ctx) {
 		printk(KERN_ERR PFX "unable to allocate task context array\n");
@@ -1876,7 +1878,7 @@ int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
 	/*
 	 * Allocate task_ctx_dma which is an array of dma addresses
 	 */
-	hba->task_ctx_dma = kmalloc((BNX2FC_TASK_CTX_ARR_SZ *
+	hba->task_ctx_dma = kmalloc((task_ctx_arr_sz *
 					sizeof(dma_addr_t)), GFP_KERNEL);
 	if (!hba->task_ctx_dma) {
 		printk(KERN_ERR PFX "unable to alloc context mapping array\n");
@@ -1885,7 +1887,7 @@ int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
 	}
 
 	task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
-	for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
+	for (i = 0; i < task_ctx_arr_sz; i++) {
 
 		hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
 						      PAGE_SIZE,
@@ -1905,7 +1907,7 @@ int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
 	return 0;
 
 out3:
-	for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
+	for (i = 0; i < task_ctx_arr_sz; i++) {
 		if (hba->task_ctx[i]) {
 
 			dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
@@ -1929,6 +1931,7 @@ out:
 
 void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
 {
+	int task_ctx_arr_sz;
 	int i;
 
 	if (hba->task_ctx_bd_tbl) {
@@ -1938,8 +1941,9 @@ void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
 		hba->task_ctx_bd_tbl = NULL;
 	}
 
+	task_ctx_arr_sz = (hba->max_tasks / BNX2FC_TASKS_PER_PAGE);
 	if (hba->task_ctx) {
-		for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
+		for (i = 0; i < task_ctx_arr_sz; i++) {
 			if (hba->task_ctx[i]) {
 				dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
 						    hba->task_ctx[i],