bnx2x: move msix table initialization to probe()
Decide which interrupt mode to use (MSI-X, MSI, INTa) only once in probe() and
initialize appropriate structures.
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bnx2x/bnx2x_cmn.c b/drivers/net/bnx2x/bnx2x_cmn.c
index da46309..2998969 100644
--- a/drivers/net/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/bnx2x/bnx2x_cmn.c
@@ -29,7 +29,6 @@
#include "bnx2x_init.h"
-static int bnx2x_poll(struct napi_struct *napi, int budget);
/* free skb in the packet ring at pos idx
* return idx of last bd freed
@@ -989,55 +988,49 @@
}
}
-void bnx2x_free_irq(struct bnx2x *bp, bool disable_only)
+void bnx2x_free_irq(struct bnx2x *bp)
{
- if (bp->flags & USING_MSIX_FLAG) {
- if (!disable_only)
- bnx2x_free_msix_irqs(bp);
- pci_disable_msix(bp->pdev);
- bp->flags &= ~USING_MSIX_FLAG;
-
- } else if (bp->flags & USING_MSI_FLAG) {
- if (!disable_only)
- free_irq(bp->pdev->irq, bp->dev);
- pci_disable_msi(bp->pdev);
- bp->flags &= ~USING_MSI_FLAG;
-
- } else if (!disable_only)
+ if (bp->flags & USING_MSIX_FLAG)
+ bnx2x_free_msix_irqs(bp);
+ else if (bp->flags & USING_MSI_FLAG)
+ free_irq(bp->pdev->irq, bp->dev);
+ else
free_irq(bp->pdev->irq, bp->dev);
}
-static int bnx2x_enable_msix(struct bnx2x *bp)
+int bnx2x_enable_msix(struct bnx2x *bp)
{
- int i, rc, offset = 1;
- int igu_vec = 0;
+ int msix_vec = 0, i, rc, req_cnt;
- bp->msix_table[0].entry = igu_vec;
- DP(NETIF_MSG_IFUP, "msix_table[0].entry = %d (slowpath)\n", igu_vec);
+ bp->msix_table[msix_vec].entry = msix_vec;
+ DP(NETIF_MSG_IFUP, "msix_table[0].entry = %d (slowpath)\n",
+ bp->msix_table[0].entry);
+ msix_vec++;
#ifdef BCM_CNIC
- igu_vec = BP_L_ID(bp) + offset;
- bp->msix_table[1].entry = igu_vec;
- DP(NETIF_MSG_IFUP, "msix_table[1].entry = %d (CNIC)\n", igu_vec);
- offset++;
+ bp->msix_table[msix_vec].entry = msix_vec;
+ DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d (CNIC)\n",
+ bp->msix_table[msix_vec].entry, bp->msix_table[msix_vec].entry);
+ msix_vec++;
#endif
for_each_queue(bp, i) {
- igu_vec = BP_L_ID(bp) + offset + i;
- bp->msix_table[i + offset].entry = igu_vec;
+ bp->msix_table[msix_vec].entry = msix_vec;
DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d "
- "(fastpath #%u)\n", i + offset, igu_vec, i);
+ "(fastpath #%u)\n", msix_vec, msix_vec, i);
+ msix_vec++;
}
- rc = pci_enable_msix(bp->pdev, &bp->msix_table[0],
- BNX2X_NUM_QUEUES(bp) + offset);
+ req_cnt = BNX2X_NUM_QUEUES(bp) + CNIC_CONTEXT_USE + 1;
+
+ rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], req_cnt);
/*
* reconfigure number of tx/rx queues according to available
* MSI-X vectors
*/
if (rc >= BNX2X_MIN_MSIX_VEC_CNT) {
- /* vectors available for FP */
- int fp_vec = rc - BNX2X_MSIX_VEC_FP_START;
+ /* how less vectors we will have? */
+ int diff = req_cnt - rc;
DP(NETIF_MSG_IFUP,
"Trying to use less MSI-X vectors: %d\n", rc);
@@ -1049,12 +1042,17 @@
"MSI-X is not attainable rc %d\n", rc);
return rc;
}
-
- bp->num_queues = min(bp->num_queues, fp_vec);
+ /*
+ * decrease number of queues by number of unallocated entries
+ */
+ bp->num_queues -= diff;
DP(NETIF_MSG_IFUP, "New queue configuration set: %d\n",
bp->num_queues);
} else if (rc) {
+ /* fall to INTx if not enough memory */
+ if (rc == -ENOMEM)
+ bp->flags |= DISABLE_MSI_FLAG;
DP(NETIF_MSG_IFUP, "MSI-X is not attainable rc %d\n", rc);
return rc;
}
@@ -1083,7 +1081,7 @@
snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
bp->dev->name, i);
- rc = request_irq(bp->msix_table[i + offset].vector,
+ rc = request_irq(bp->msix_table[offset].vector,
bnx2x_msix_fp_int, 0, fp->name, fp);
if (rc) {
BNX2X_ERR("request fp #%d irq failed rc %d\n", i, rc);
@@ -1091,10 +1089,12 @@
return -EBUSY;
}
+ offset++;
fp->state = BNX2X_FP_STATE_IRQ;
}
i = BNX2X_NUM_QUEUES(bp);
+ offset = 1 + CNIC_CONTEXT_USE;
netdev_info(bp->dev, "using MSI-X IRQs: sp %d fp[%d] %d"
" ... fp[%d] %d\n",
bp->msix_table[0].vector,
@@ -1104,7 +1104,7 @@
return 0;
}
-static int bnx2x_enable_msi(struct bnx2x *bp)
+int bnx2x_enable_msi(struct bnx2x *bp)
{
int rc;
@@ -1175,44 +1175,20 @@
bnx2x_napi_disable(bp);
netif_tx_disable(bp->dev);
}
-static int bnx2x_set_num_queues(struct bnx2x *bp)
-{
- int rc = 0;
- switch (bp->int_mode) {
- case INT_MODE_MSI:
- bnx2x_enable_msi(bp);
- /* falling through... */
- case INT_MODE_INTx:
+void bnx2x_set_num_queues(struct bnx2x *bp)
+{
+ switch (bp->multi_mode) {
+ case ETH_RSS_MODE_DISABLED:
bp->num_queues = 1;
- DP(NETIF_MSG_IFUP, "set number of queues to 1\n");
+ break;
+ case ETH_RSS_MODE_REGULAR:
+ bp->num_queues = bnx2x_calc_num_queues(bp);
break;
default:
- /* Set number of queues according to bp->multi_mode value */
- bnx2x_set_num_queues_msix(bp);
-
- DP(NETIF_MSG_IFUP, "set number of queues to %d\n",
- bp->num_queues);
-
- /* if we can't use MSI-X we only need one fp,
- * so try to enable MSI-X with the requested number of fp's
- * and fallback to MSI or legacy INTx with one fp
- */
- rc = bnx2x_enable_msix(bp);
- if (rc) {
- /* failed to enable MSI-X */
- bp->num_queues = 1;
-
- /* Fall to INTx if failed to enable MSI-X due to lack of
- * memory (in bnx2x_set_num_queues()) */
- if ((rc != -ENOMEM) && (bp->int_mode != INT_MODE_INTx))
- bnx2x_enable_msi(bp);
- }
-
+ bp->num_queues = 1;
break;
}
- netif_set_real_num_tx_queues(bp->dev, bp->num_queues);
- return netif_set_real_num_rx_queues(bp->dev, bp->num_queues);
}
static void bnx2x_release_firmware(struct bnx2x *bp)
@@ -1243,49 +1219,25 @@
bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD;
- rc = bnx2x_set_num_queues(bp);
- if (rc)
- return rc;
-
/* must be called before memory allocation and HW init */
bnx2x_ilt_set_info(bp);
- if (bnx2x_alloc_mem(bp)) {
- bnx2x_free_irq(bp, true);
+ if (bnx2x_alloc_mem(bp))
return -ENOMEM;
+
+ netif_set_real_num_tx_queues(bp->dev, bp->num_queues);
+ rc = netif_set_real_num_rx_queues(bp->dev, bp->num_queues);
+ if (rc) {
+ BNX2X_ERR("Unable to update real_num_rx_queues\n");
+ goto load_error0;
}
for_each_queue(bp, i)
bnx2x_fp(bp, i, disable_tpa) =
((bp->flags & TPA_ENABLE_FLAG) == 0);
- for_each_queue(bp, i)
- netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi),
- bnx2x_poll, 128);
-
bnx2x_napi_enable(bp);
- if (bp->flags & USING_MSIX_FLAG) {
- rc = bnx2x_req_msix_irqs(bp);
- if (rc) {
- bnx2x_free_irq(bp, true);
- goto load_error1;
- }
- } else {
- bnx2x_ack_int(bp);
- rc = bnx2x_req_irq(bp);
- if (rc) {
- BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc);
- bnx2x_free_irq(bp, true);
- goto load_error1;
- }
- if (bp->flags & USING_MSI_FLAG) {
- bp->dev->irq = bp->pdev->irq;
- netdev_info(bp->dev, "using MSI IRQ %d\n",
- bp->pdev->irq);
- }
- }
-
/* Send LOAD_REQUEST command to MCP
Returns the type of LOAD command:
if it is the first port to be initialized
@@ -1296,11 +1248,11 @@
if (!load_code) {
BNX2X_ERR("MCP response failure, aborting\n");
rc = -EBUSY;
- goto load_error2;
+ goto load_error1;
}
if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) {
rc = -EBUSY; /* other port in diagnostic mode */
- goto load_error2;
+ goto load_error1;
}
} else {
@@ -1341,6 +1293,8 @@
goto load_error2;
}
+ /* Connect to IRQs */
+ rc = bnx2x_setup_irqs(bp);
if (rc) {
bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
goto load_error2;
@@ -1481,22 +1435,24 @@
#endif
load_error3:
bnx2x_int_disable_sync(bp, 1);
- if (!BP_NOMCP(bp)) {
- bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0);
- bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
- }
- bp->port.pmf = 0;
+
/* Free SKBs, SGEs, TPA pool and driver internals */
bnx2x_free_skbs(bp);
for_each_queue(bp, i)
bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
-load_error2:
+
/* Release IRQs */
- bnx2x_free_irq(bp, false);
+ bnx2x_free_irq(bp);
+load_error2:
+ if (!BP_NOMCP(bp)) {
+ bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0);
+ bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
+ }
+
+ bp->port.pmf = 0;
load_error1:
bnx2x_napi_disable(bp);
- for_each_queue(bp, i)
- netif_napi_del(&bnx2x_fp(bp, i, napi));
+load_error0:
bnx2x_free_mem(bp);
bnx2x_release_firmware(bp);
@@ -1544,7 +1500,7 @@
bnx2x_netif_stop(bp, 1);
/* Release IRQs */
- bnx2x_free_irq(bp, false);
+ bnx2x_free_irq(bp);
}
bp->port.pmf = 0;
@@ -1553,8 +1509,7 @@
bnx2x_free_skbs(bp);
for_each_queue(bp, i)
bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
- for_each_queue(bp, i)
- netif_napi_del(&bnx2x_fp(bp, i, napi));
+
bnx2x_free_mem(bp);
bp->state = BNX2X_STATE_CLOSED;
@@ -1624,7 +1579,7 @@
* net_device service functions
*/
-static int bnx2x_poll(struct napi_struct *napi, int budget)
+int bnx2x_poll(struct napi_struct *napi, int budget)
{
int work_done = 0;
struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
@@ -2261,6 +2216,31 @@
return 0;
}
+
+int bnx2x_setup_irqs(struct bnx2x *bp)
+{
+ int rc = 0;
+ if (bp->flags & USING_MSIX_FLAG) {
+ rc = bnx2x_req_msix_irqs(bp);
+ if (rc)
+ return rc;
+ } else {
+ bnx2x_ack_int(bp);
+ rc = bnx2x_req_irq(bp);
+ if (rc) {
+ BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc);
+ return rc;
+ }
+ if (bp->flags & USING_MSI_FLAG) {
+ bp->dev->irq = bp->pdev->irq;
+ netdev_info(bp->dev, "using MSI IRQ %d\n",
+ bp->pdev->irq);
+ }
+ }
+
+ return 0;
+}
+
void bnx2x_free_mem_bp(struct bnx2x *bp)
{
kfree(bp->fp);