1 files changed, 307 insertions, 224 deletions

diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index 523478ebfd69..ae7b697456b4 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -86,7 +86,7 @@
 #include "s2io.h"
 #include "s2io-regs.h"
 
-#define DRV_VERSION "2.0.26.23"
+#define DRV_VERSION "2.0.26.24"
 
 /* S2io Driver name & version. */
 static char s2io_driver_name[] = "Neterion";
@@ -1113,9 +1113,10 @@ static int s2io_on_nec_bridge(struct pci_dev *s2io_pdev)
         struct pci_dev *tdev = NULL;
         while ((tdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, tdev)) != NULL) {
                 if (tdev->vendor == NEC_VENID && tdev->device == NEC_DEVID) {
-                        if (tdev->bus == s2io_pdev->bus->parent)
+                        if (tdev->bus == s2io_pdev->bus->parent) {
                                 pci_dev_put(tdev);
                                 return 1;
+                        }
                 }
         }
         return 0;
@@ -1219,15 +1220,33 @@ static int init_tti(struct s2io_nic *nic, int link)
                                 TTI_DATA1_MEM_TX_URNG_B(0x10) |
                                 TTI_DATA1_MEM_TX_URNG_C(0x30) |
                                 TTI_DATA1_MEM_TX_TIMER_AC_EN;
-
-                if (use_continuous_tx_intrs && (link == LINK_UP))
-                        val64 |= TTI_DATA1_MEM_TX_TIMER_CI_EN;
+                if (i == 0)
+                        if (use_continuous_tx_intrs && (link == LINK_UP))
+                                val64 |= TTI_DATA1_MEM_TX_TIMER_CI_EN;
                 writeq(val64, &bar0->tti_data1_mem);
 
-                val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) |
-                                TTI_DATA2_MEM_TX_UFC_B(0x20) |
-                                TTI_DATA2_MEM_TX_UFC_C(0x40) |
-                                TTI_DATA2_MEM_TX_UFC_D(0x80);
+                if (nic->config.intr_type == MSI_X) {
+                        val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) |
+                                TTI_DATA2_MEM_TX_UFC_B(0x100) |
+                                TTI_DATA2_MEM_TX_UFC_C(0x200) |
+                                TTI_DATA2_MEM_TX_UFC_D(0x300);
+                } else {
+                        if ((nic->config.tx_steering_type ==
+                                TX_DEFAULT_STEERING) &&
+                                (config->tx_fifo_num > 1) &&
+                                (i >= nic->udp_fifo_idx) &&
+                                (i < (nic->udp_fifo_idx +
+                                nic->total_udp_fifos)))
+                                val64 = TTI_DATA2_MEM_TX_UFC_A(0x50) |
+                                        TTI_DATA2_MEM_TX_UFC_B(0x80) |
+                                        TTI_DATA2_MEM_TX_UFC_C(0x100) |
+                                        TTI_DATA2_MEM_TX_UFC_D(0x120);
+                        else
+                                val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) |
+                                        TTI_DATA2_MEM_TX_UFC_B(0x20) |
+                                        TTI_DATA2_MEM_TX_UFC_C(0x40) |
+                                        TTI_DATA2_MEM_TX_UFC_D(0x80);
+                }
 
                 writeq(val64, &bar0->tti_data2_mem);
 
@@ -2606,9 +2625,7 @@ static int fill_rx_buffers(struct ring_info *ring)
                         rxdp1->Buffer0_ptr = pci_map_single
                             (ring->pdev, skb->data, size - NET_IP_ALIGN,
                                 PCI_DMA_FROMDEVICE);
-                        if( (rxdp1->Buffer0_ptr == 0) ||
-                                (rxdp1->Buffer0_ptr ==
-                                DMA_ERROR_CODE))
+                        if(pci_dma_mapping_error(rxdp1->Buffer0_ptr))
                                 goto pci_map_failed;
 
                         rxdp->Control_2 =
@@ -2638,6 +2655,7 @@ static int fill_rx_buffers(struct ring_info *ring)
                         skb->data = (void *) (unsigned long)tmp;
                         skb_reset_tail_pointer(skb);
 
+                        /* AK: check is wrong. 0 can be valid dma address */
                         if (!(rxdp3->Buffer0_ptr))
                                 rxdp3->Buffer0_ptr =
                                    pci_map_single(ring->pdev, ba->ba_0,
@@ -2646,8 +2664,7 @@ static int fill_rx_buffers(struct ring_info *ring)
                                 pci_dma_sync_single_for_device(ring->pdev,
                                 (dma_addr_t) rxdp3->Buffer0_ptr,
                                     BUF0_LEN, PCI_DMA_FROMDEVICE);
-                        if( (rxdp3->Buffer0_ptr == 0) ||
-                                (rxdp3->Buffer0_ptr == DMA_ERROR_CODE))
+                        if (pci_dma_mapping_error(rxdp3->Buffer0_ptr))
                                 goto pci_map_failed;
 
                         rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
@@ -2662,18 +2679,17 @@ static int fill_rx_buffers(struct ring_info *ring)
                                 (ring->pdev, skb->data, ring->mtu + 4,
                                                 PCI_DMA_FROMDEVICE);
 
-                                if( (rxdp3->Buffer2_ptr == 0) ||
-                                        (rxdp3->Buffer2_ptr == DMA_ERROR_CODE))
+                                if (pci_dma_mapping_error(rxdp3->Buffer2_ptr))
                                         goto pci_map_failed;
 
+                                /* AK: check is wrong */
                                 if (!rxdp3->Buffer1_ptr)
                                         rxdp3->Buffer1_ptr =
                                                 pci_map_single(ring->pdev,
                                                 ba->ba_1, BUF1_LEN,
                                                 PCI_DMA_FROMDEVICE);
 
-                                if( (rxdp3->Buffer1_ptr == 0) ||
-                                        (rxdp3->Buffer1_ptr == DMA_ERROR_CODE)) {
+                                if (pci_dma_mapping_error(rxdp3->Buffer1_ptr)) {
                                         pci_unmap_single
                                                 (ring->pdev,
                                                 (dma_addr_t)(unsigned long)
@@ -2813,6 +2829,15 @@ static void free_rx_buffers(struct s2io_nic *sp)
         }
 }
 
+static int s2io_chk_rx_buffers(struct ring_info *ring)
+{
+        if (fill_rx_buffers(ring) == -ENOMEM) {
+                DBG_PRINT(INFO_DBG, "%s:Out of memory", ring->dev->name);
+                DBG_PRINT(INFO_DBG, " in Rx Intr!!\n");
+        }
+        return 0;
+}
+
 /**
  * s2io_poll - Rx interrupt handler for NAPI support
  * @napi : pointer to the napi structure.
@@ -2826,57 +2851,73 @@ static void free_rx_buffers(struct s2io_nic *sp)
  * 0 on success and 1 if there are No Rx packets to be processed.
  */
 
-static int s2io_poll(struct napi_struct *napi, int budget)
+static int s2io_poll_msix(struct napi_struct *napi, int budget)
 {
-        struct s2io_nic *nic = container_of(napi, struct s2io_nic, napi);
-        struct net_device *dev = nic->dev;
-        int pkt_cnt = 0, org_pkts_to_process;
-        struct mac_info *mac_control;
+        struct ring_info *ring = container_of(napi, struct ring_info, napi);
+        struct net_device *dev = ring->dev;
         struct config_param *config;
+        struct mac_info *mac_control;
+        int pkts_processed = 0;
+        u8 __iomem *addr = NULL;
+        u8 val8 = 0;
+        struct s2io_nic *nic = dev->priv;
         struct XENA_dev_config __iomem *bar0 = nic->bar0;
-        int i;
+        int budget_org = budget;
 
-        mac_control = &nic->mac_control;
         config = &nic->config;
+        mac_control = &nic->mac_control;
 
-        nic->pkts_to_process = budget;
-        org_pkts_to_process = nic->pkts_to_process;
+        if (unlikely(!is_s2io_card_up(nic)))
+                return 0;
 
-        writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
-        readl(&bar0->rx_traffic_int);
+        pkts_processed = rx_intr_handler(ring, budget);
+        s2io_chk_rx_buffers(ring);
 
-        for (i = 0; i < config->rx_ring_num; i++) {
-                rx_intr_handler(&mac_control->rings[i]);
-                pkt_cnt = org_pkts_to_process - nic->pkts_to_process;
-                if (!nic->pkts_to_process) {
-                        /* Quota for the current iteration has been met */
-                        goto no_rx;
-                }
+        if (pkts_processed < budget_org) {
+                netif_rx_complete(dev, napi);
+                /*Re Enable MSI-Rx Vector*/
+                addr = (u8 __iomem *)&bar0->xmsi_mask_reg;
+                addr += 7 - ring->ring_no;
+                val8 = (ring->ring_no == 0) ? 0x3f : 0xbf;
+                writeb(val8, addr);
+                val8 = readb(addr);
         }
+        return pkts_processed;
+}
+static int s2io_poll_inta(struct napi_struct *napi, int budget)
+{
+        struct s2io_nic *nic = container_of(napi, struct s2io_nic, napi);
+        struct ring_info *ring;
+        struct net_device *dev = nic->dev;
+        struct config_param *config;
+        struct mac_info *mac_control;
+        int pkts_processed = 0;
+        int ring_pkts_processed, i;
+        struct XENA_dev_config __iomem *bar0 = nic->bar0;
+        int budget_org = budget;
 
-        netif_rx_complete(dev, napi);
+        config = &nic->config;
+        mac_control = &nic->mac_control;
 
-        for (i = 0; i < config->rx_ring_num; i++) {
-                if (fill_rx_buffers(&mac_control->rings[i]) == -ENOMEM) {
-                        DBG_PRINT(INFO_DBG, "%s:Out of memory", dev->name);
-                        DBG_PRINT(INFO_DBG, " in Rx Poll!!\n");
-                        break;
-                }
-        }
-        /* Re enable the Rx interrupts. */
-        writeq(0x0, &bar0->rx_traffic_mask);
-        readl(&bar0->rx_traffic_mask);
-        return pkt_cnt;
+        if (unlikely(!is_s2io_card_up(nic)))
+                return 0;
 
-no_rx:
         for (i = 0; i < config->rx_ring_num; i++) {
-                if (fill_rx_buffers(&mac_control->rings[i]) == -ENOMEM) {
-                        DBG_PRINT(INFO_DBG, "%s:Out of memory", dev->name);
-                        DBG_PRINT(INFO_DBG, " in Rx Poll!!\n");
+                ring = &mac_control->rings[i];
+                ring_pkts_processed = rx_intr_handler(ring, budget);
+                s2io_chk_rx_buffers(ring);
+                pkts_processed += ring_pkts_processed;
+                budget -= ring_pkts_processed;
+                if (budget <= 0)
                         break;
-                }
         }
-        return pkt_cnt;
+        if (pkts_processed < budget_org) {
+                netif_rx_complete(dev, napi);
+                /* Re enable the Rx interrupts for the ring */
+                writeq(0, &bar0->rx_traffic_mask);
+                readl(&bar0->rx_traffic_mask);
+        }
+        return pkts_processed;
 }
 
 #ifdef CONFIG_NET_POLL_CONTROLLER
@@ -2918,7 +2959,7 @@ static void s2io_netpoll(struct net_device *dev)
 
         /* check for received packet and indicate up to network */
         for (i = 0; i < config->rx_ring_num; i++)
-                rx_intr_handler(&mac_control->rings[i]);
+                rx_intr_handler(&mac_control->rings[i], 0);
 
         for (i = 0; i < config->rx_ring_num; i++) {
                 if (fill_rx_buffers(&mac_control->rings[i]) == -ENOMEM) {
@@ -2934,7 +2975,8 @@ static void s2io_netpoll(struct net_device *dev)
 
 /**
  *  rx_intr_handler - Rx interrupt handler
- *  @nic: device private variable.
+ *  @ring_info: per ring structure.
+ *  @budget: budget for napi processing.
  *  Description:
  *  If the interrupt is because of a received frame or if the
  *  receive ring contains fresh as yet un-processed frames,this function is
@@ -2942,15 +2984,15 @@ static void s2io_netpoll(struct net_device *dev)
  *  stopped and sends the skb to the OSM's Rx handler and then increments
  *  the offset.
  *  Return Value:
- *  NONE.
+ *  No. of napi packets processed.
  */
-static void rx_intr_handler(struct ring_info *ring_data)
+static int rx_intr_handler(struct ring_info *ring_data, int budget)
 {
         int get_block, put_block;
         struct rx_curr_get_info get_info, put_info;
         struct RxD_t *rxdp;
         struct sk_buff *skb;
-        int pkt_cnt = 0;
+        int pkt_cnt = 0, napi_pkts = 0;
         int i;
         struct RxD1* rxdp1;
         struct RxD3* rxdp3;
@@ -2977,7 +3019,7 @@ static void rx_intr_handler(struct ring_info *ring_data)
                         DBG_PRINT(ERR_DBG, "%s: The skb is ",
                                   ring_data->dev->name);
                         DBG_PRINT(ERR_DBG, "Null in Rx Intr\n");
-                        return;
+                        return 0;
                 }
                 if (ring_data->rxd_mode == RXD_MODE_1) {
                         rxdp1 = (struct RxD1*)rxdp;
@@ -3014,9 +3056,10 @@ static void rx_intr_handler(struct ring_info *ring_data)
                         rxdp = ring_data->rx_blocks[get_block].block_virt_addr;
                 }
 
-                if(ring_data->nic->config.napi){
-                        ring_data->nic->pkts_to_process -= 1;
-                        if (!ring_data->nic->pkts_to_process)
+                if (ring_data->nic->config.napi) {
+                        budget--;
+                        napi_pkts++;
+                        if (!budget)
                                 break;
                 }
                 pkt_cnt++;
@@ -3034,6 +3077,7 @@ static void rx_intr_handler(struct ring_info *ring_data)
                         }
                 }
         }
+        return(napi_pkts);
 }
 
 /**
@@ -3730,14 +3774,19 @@ static void restore_xmsi_data(struct s2io_nic *nic)
 {
         struct XENA_dev_config __iomem *bar0 = nic->bar0;
         u64 val64;
-        int i;
+        int i, msix_index;
+
+
+        if (nic->device_type == XFRAME_I_DEVICE)
+                return;
 
         for (i=0; i < MAX_REQUESTED_MSI_X; i++) {
+                msix_index = (i) ? ((i-1) * 8 + 1): 0;
                 writeq(nic->msix_info[i].addr, &bar0->xmsi_address);
                 writeq(nic->msix_info[i].data, &bar0->xmsi_data);
-                val64 = (s2BIT(7) | s2BIT(15) | vBIT(i, 26, 6));
+                val64 = (s2BIT(7) | s2BIT(15) | vBIT(msix_index, 26, 6));
                 writeq(val64, &bar0->xmsi_access);
-                if (wait_for_msix_trans(nic, i)) {
+                if (wait_for_msix_trans(nic, msix_index)) {
                         DBG_PRINT(ERR_DBG, "failed in %s\n", __FUNCTION__);
                         continue;
                 }
@@ -3748,13 +3797,17 @@ static void store_xmsi_data(struct s2io_nic *nic)
 {
         struct XENA_dev_config __iomem *bar0 = nic->bar0;
         u64 val64, addr, data;
-        int i;
+        int i, msix_index;
+
+        if (nic->device_type == XFRAME_I_DEVICE)
+                return;
 
         /* Store and display */
         for (i=0; i < MAX_REQUESTED_MSI_X; i++) {
-                val64 = (s2BIT(15) | vBIT(i, 26, 6));
+                msix_index = (i) ? ((i-1) * 8 + 1): 0;
+                val64 = (s2BIT(15) | vBIT(msix_index, 26, 6));
                 writeq(val64, &bar0->xmsi_access);
-                if (wait_for_msix_trans(nic, i)) {
+                if (wait_for_msix_trans(nic, msix_index)) {
                         DBG_PRINT(ERR_DBG, "failed in %s\n", __FUNCTION__);
                         continue;
                 }
@@ -3770,11 +3823,11 @@ static void store_xmsi_data(struct s2io_nic *nic)
 static int s2io_enable_msi_x(struct s2io_nic *nic)
 {
         struct XENA_dev_config __iomem *bar0 = nic->bar0;
-        u64 tx_mat, rx_mat;
+        u64 rx_mat;
         u16 msi_control; /* Temp variable */
         int ret, i, j, msix_indx = 1;
 
-        nic->entries = kcalloc(MAX_REQUESTED_MSI_X, sizeof(struct msix_entry),
+        nic->entries = kmalloc(nic->num_entries * sizeof(struct msix_entry),
                                GFP_KERNEL);
         if (!nic->entries) {
                 DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n", \
@@ -3783,10 +3836,12 @@ static int s2io_enable_msi_x(struct s2io_nic *nic)
                 return -ENOMEM;
         }
         nic->mac_control.stats_info->sw_stat.mem_allocated
-                += (MAX_REQUESTED_MSI_X * sizeof(struct msix_entry));
+                += (nic->num_entries * sizeof(struct msix_entry));
+
+        memset(nic->entries, 0, nic->num_entries * sizeof(struct msix_entry));
 
         nic->s2io_entries =
-                kcalloc(MAX_REQUESTED_MSI_X, sizeof(struct s2io_msix_entry),
+                kmalloc(nic->num_entries * sizeof(struct s2io_msix_entry),
                                    GFP_KERNEL);
         if (!nic->s2io_entries) {
                 DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n",
@@ -3794,60 +3849,52 @@ static int s2io_enable_msi_x(struct s2io_nic *nic)
                 nic->mac_control.stats_info->sw_stat.mem_alloc_fail_cnt++;
                 kfree(nic->entries);
                 nic->mac_control.stats_info->sw_stat.mem_freed
-                        += (MAX_REQUESTED_MSI_X * sizeof(struct msix_entry));
+                        += (nic->num_entries * sizeof(struct msix_entry));
                 return -ENOMEM;
         }
          nic->mac_control.stats_info->sw_stat.mem_allocated
-                += (MAX_REQUESTED_MSI_X * sizeof(struct s2io_msix_entry));
-
-        for (i=0; i< MAX_REQUESTED_MSI_X; i++) {
-                nic->entries[i].entry = i;
-                nic->s2io_entries[i].entry = i;
+                += (nic->num_entries * sizeof(struct s2io_msix_entry));
+        memset(nic->s2io_entries, 0,
+                nic->num_entries * sizeof(struct s2io_msix_entry));
+
+        nic->entries[0].entry = 0;
+        nic->s2io_entries[0].entry = 0;
+        nic->s2io_entries[0].in_use = MSIX_FLG;
+        nic->s2io_entries[0].type = MSIX_ALARM_TYPE;
+        nic->s2io_entries[0].arg = &nic->mac_control.fifos;
+
+        for (i = 1; i < nic->num_entries; i++) {
+                nic->entries[i].entry = ((i - 1) * 8) + 1;
+                nic->s2io_entries[i].entry = ((i - 1) * 8) + 1;
                 nic->s2io_entries[i].arg = NULL;
                 nic->s2io_entries[i].in_use = 0;
         }
 
-        tx_mat = readq(&bar0->tx_mat0_n[0]);
-        for (i=0; i<nic->config.tx_fifo_num; i++, msix_indx++) {
-                tx_mat |= TX_MAT_SET(i, msix_indx);
-                nic->s2io_entries[msix_indx].arg = &nic->mac_control.fifos[i];
-                nic->s2io_entries[msix_indx].type = MSIX_FIFO_TYPE;
-                nic->s2io_entries[msix_indx].in_use = MSIX_FLG;
-        }
-        writeq(tx_mat, &bar0->tx_mat0_n[0]);
-
         rx_mat = readq(&bar0->rx_mat);
-        for (j = 0; j < nic->config.rx_ring_num; j++, msix_indx++) {
+        for (j = 0; j < nic->config.rx_ring_num; j++) {
                 rx_mat |= RX_MAT_SET(j, msix_indx);
-                nic->s2io_entries[msix_indx].arg
-                        = &nic->mac_control.rings[j];
-                nic->s2io_entries[msix_indx].type = MSIX_RING_TYPE;
-                nic->s2io_entries[msix_indx].in_use = MSIX_FLG;
+                nic->s2io_entries[j+1].arg = &nic->mac_control.rings[j];
+                nic->s2io_entries[j+1].type = MSIX_RING_TYPE;
+                nic->s2io_entries[j+1].in_use = MSIX_FLG;
+                msix_indx += 8;
         }
         writeq(rx_mat, &bar0->rx_mat);
+        readq(&bar0->rx_mat);
 
-        nic->avail_msix_vectors = 0;
-        ret = pci_enable_msix(nic->pdev, nic->entries, MAX_REQUESTED_MSI_X);
+        ret = pci_enable_msix(nic->pdev, nic->entries, nic->num_entries);
         /* We fail init if error or we get less vectors than min required */
-        if (ret >= (nic->config.tx_fifo_num + nic->config.rx_ring_num + 1)) {
-                nic->avail_msix_vectors = ret;
-                ret = pci_enable_msix(nic->pdev, nic->entries, ret);
-        }
         if (ret) {
                 DBG_PRINT(ERR_DBG, "%s: Enabling MSIX failed\n", nic->dev->name);
                 kfree(nic->entries);
                 nic->mac_control.stats_info->sw_stat.mem_freed
-                        += (MAX_REQUESTED_MSI_X * sizeof(struct msix_entry));
+                        += (nic->num_entries * sizeof(struct msix_entry));
                 kfree(nic->s2io_entries);
                 nic->mac_control.stats_info->sw_stat.mem_freed
-                += (MAX_REQUESTED_MSI_X * sizeof(struct s2io_msix_entry));
+                        += (nic->num_entries * sizeof(struct s2io_msix_entry));
                 nic->entries = NULL;
                 nic->s2io_entries = NULL;
-                nic->avail_msix_vectors = 0;
                 return -ENOMEM;
         }
-        if (!nic->avail_msix_vectors)
-                nic->avail_msix_vectors = MAX_REQUESTED_MSI_X;
 
         /*
          * To enable MSI-X, MSI also needs to be enabled, due to a bug
@@ -3919,7 +3966,7 @@ static void remove_msix_isr(struct s2io_nic *sp)
         int i;
         u16 msi_control;
 
-        for (i = 0; i < MAX_REQUESTED_MSI_X; i++) {
+        for (i = 0; i < sp->num_entries; i++) {
                 if (sp->s2io_entries[i].in_use ==
                         MSIX_REGISTERED_SUCCESS) {
                         int vector = sp->entries[i].vector;
@@ -3975,29 +4022,6 @@ static int s2io_open(struct net_device *dev)
         netif_carrier_off(dev);
         sp->last_link_state = 0;
 
-        if (sp->config.intr_type == MSI_X) {
-                int ret = s2io_enable_msi_x(sp);
-
-                if (!ret) {
-                        ret = s2io_test_msi(sp);
-                        /* rollback MSI-X, will re-enable during add_isr() */
-                        remove_msix_isr(sp);
-                }
-                if (ret) {
-
-                        DBG_PRINT(ERR_DBG,
-                          "%s: MSI-X requested but failed to enable\n",
-                          dev->name);
-                        sp->config.intr_type = INTA;
-                }
-        }
-
-        /* NAPI doesn't work well with MSI(X) */
-         if (sp->config.intr_type != INTA) {
-                if(sp->config.napi)
-                        sp->config.napi = 0;
-        }
-
         /* Initialize H/W and enable interrupts */
         err = s2io_card_up(sp);
         if (err) {
@@ -4020,12 +4044,12 @@ hw_init_failed:
                 if (sp->entries) {
                         kfree(sp->entries);
                         sp->mac_control.stats_info->sw_stat.mem_freed
-                        += (MAX_REQUESTED_MSI_X * sizeof(struct msix_entry));
+                        += (sp->num_entries * sizeof(struct msix_entry));
                 }
                 if (sp->s2io_entries) {
                         kfree(sp->s2io_entries);
                         sp->mac_control.stats_info->sw_stat.mem_freed
-                        += (MAX_REQUESTED_MSI_X * sizeof(struct s2io_msix_entry));
+                        += (sp->num_entries * sizeof(struct s2io_msix_entry));
                 }
         }
         return err;
@@ -4237,16 +4261,14 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
                 txdp->Buffer_Pointer = pci_map_single(sp->pdev,
                                         fifo->ufo_in_band_v,
                                         sizeof(u64), PCI_DMA_TODEVICE);
-                if((txdp->Buffer_Pointer == 0) ||
-                        (txdp->Buffer_Pointer == DMA_ERROR_CODE))
+                if (pci_dma_mapping_error(txdp->Buffer_Pointer))
                         goto pci_map_failed;
                 txdp++;
         }
 
         txdp->Buffer_Pointer = pci_map_single
             (sp->pdev, skb->data, frg_len, PCI_DMA_TODEVICE);
-        if((txdp->Buffer_Pointer == 0) ||
-                (txdp->Buffer_Pointer == DMA_ERROR_CODE))
+        if (pci_dma_mapping_error(txdp->Buffer_Pointer))
                 goto pci_map_failed;
 
         txdp->Host_Control = (unsigned long) skb;
@@ -4327,40 +4349,65 @@ s2io_alarm_handle(unsigned long data)
         mod_timer(&sp->alarm_timer, jiffies + HZ / 2);
 }
 
-static int s2io_chk_rx_buffers(struct ring_info *ring)
-{
-        if (fill_rx_buffers(ring) == -ENOMEM) {
-                DBG_PRINT(INFO_DBG, "%s:Out of memory", ring->dev->name);
-                DBG_PRINT(INFO_DBG, " in Rx Intr!!\n");
-        }
-        return 0;
-}
-
 static irqreturn_t s2io_msix_ring_handle(int irq, void *dev_id)
 {
         struct ring_info *ring = (struct ring_info *)dev_id;
         struct s2io_nic *sp = ring->nic;
+        struct XENA_dev_config __iomem *bar0 = sp->bar0;
+        struct net_device *dev = sp->dev;
 
-        if (!is_s2io_card_up(sp))
+        if (unlikely(!is_s2io_card_up(sp)))
                 return IRQ_HANDLED;
 
-        rx_intr_handler(ring);
-        s2io_chk_rx_buffers(ring);
+        if (sp->config.napi) {
+                u8 __iomem *addr = NULL;
+                u8 val8 = 0;
+
+                addr = (u8 __iomem *)&bar0->xmsi_mask_reg;
+                addr += (7 - ring->ring_no);
+                val8 = (ring->ring_no == 0) ? 0x7f : 0xff;
+                writeb(val8, addr);
+                val8 = readb(addr);
+                netif_rx_schedule(dev, &ring->napi);
+        } else {
+                rx_intr_handler(ring, 0);
+                s2io_chk_rx_buffers(ring);
+        }
 
         return IRQ_HANDLED;
 }
 
 static irqreturn_t s2io_msix_fifo_handle(int irq, void *dev_id)
 {
-        struct fifo_info *fifo = (struct fifo_info *)dev_id;
-        struct s2io_nic *sp = fifo->nic;
+        int i;
+        struct fifo_info *fifos = (struct fifo_info *)dev_id;
+        struct s2io_nic *sp = fifos->nic;
+        struct XENA_dev_config __iomem *bar0 = sp->bar0;
+        struct config_param *config  = &sp->config;
+        u64 reason;
 
-        if (!is_s2io_card_up(sp))
+        if (unlikely(!is_s2io_card_up(sp)))
+                return IRQ_NONE;
+
+        reason = readq(&bar0->general_int_status);
+        if (unlikely(reason == S2IO_MINUS_ONE))
+                /* Nothing much can be done. Get out */
                 return IRQ_HANDLED;
 
-        tx_intr_handler(fifo);
+        writeq(S2IO_MINUS_ONE, &bar0->general_int_mask);
+
+        if (reason & GEN_INTR_TXTRAFFIC)
+                writeq(S2IO_MINUS_ONE, &bar0->tx_traffic_int);
+
+        for (i = 0; i < config->tx_fifo_num; i++)
+                tx_intr_handler(&fifos[i]);
+
+        writeq(sp->general_int_mask, &bar0->general_int_mask);
+        readl(&bar0->general_int_status);
+
         return IRQ_HANDLED;
 }
+
 static void s2io_txpic_intr_handle(struct s2io_nic *sp)
 {
         struct XENA_dev_config __iomem *bar0 = sp->bar0;
@@ -4762,14 +4809,10 @@ static irqreturn_t s2io_isr(int irq, void *dev_id)
 
                 if (config->napi) {
                         if (reason & GEN_INTR_RXTRAFFIC) {
-                                if (likely(netif_rx_schedule_prep(dev,
-                                                        &sp->napi))) {
-                                        __netif_rx_schedule(dev, &sp->napi);
-                                        writeq(S2IO_MINUS_ONE,
-                                               &bar0->rx_traffic_mask);
-                                } else
-                                        writeq(S2IO_MINUS_ONE,
-                                               &bar0->rx_traffic_int);
+                                netif_rx_schedule(dev, &sp->napi);
+                                writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_mask);
+                                writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
+                                readl(&bar0->rx_traffic_int);
                         }
                 } else {
                         /*
@@ -4781,7 +4824,7 @@ static irqreturn_t s2io_isr(int irq, void *dev_id)
                                 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
 
                         for (i = 0; i < config->rx_ring_num; i++)
-                                rx_intr_handler(&mac_control->rings[i]);
+                                rx_intr_handler(&mac_control->rings[i], 0);
                 }
 
                 /*
@@ -6836,10 +6879,8 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
                                 pci_map_single( sp->pdev, (*skb)->data,
                                         size - NET_IP_ALIGN,
                                         PCI_DMA_FROMDEVICE);
-                        if( (rxdp1->Buffer0_ptr == 0) ||
-                                (rxdp1->Buffer0_ptr == DMA_ERROR_CODE)) {
+                        if (pci_dma_mapping_error(rxdp1->Buffer0_ptr))
                                 goto memalloc_failed;
-                        }
                         rxdp->Host_Control = (unsigned long) (*skb);
                 }
         } else if ((sp->rxd_mode == RXD_MODE_3B) && (rxdp->Host_Control == 0)) {
@@ -6865,15 +6906,12 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
                                 pci_map_single(sp->pdev, (*skb)->data,
                                                dev->mtu + 4,
                                                PCI_DMA_FROMDEVICE);
-                        if( (rxdp3->Buffer2_ptr == 0) ||
-                                (rxdp3->Buffer2_ptr == DMA_ERROR_CODE)) {
+                        if (pci_dma_mapping_error(rxdp3->Buffer2_ptr))
                                 goto memalloc_failed;
-                        }
                         rxdp3->Buffer0_ptr = *temp0 =
                                 pci_map_single( sp->pdev, ba->ba_0, BUF0_LEN,
                                                 PCI_DMA_FROMDEVICE);
-                        if( (rxdp3->Buffer0_ptr == 0) ||
-                                (rxdp3->Buffer0_ptr == DMA_ERROR_CODE)) {
+                        if (pci_dma_mapping_error(rxdp3->Buffer0_ptr)) {
                                 pci_unmap_single (sp->pdev,
                                         (dma_addr_t)rxdp3->Buffer2_ptr,
                                         dev->mtu + 4, PCI_DMA_FROMDEVICE);
@@ -6885,8 +6923,7 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
                         rxdp3->Buffer1_ptr = *temp1 =
                                 pci_map_single(sp->pdev, ba->ba_1, BUF1_LEN,
                                                 PCI_DMA_FROMDEVICE);
-                        if( (rxdp3->Buffer1_ptr == 0) ||
-                                (rxdp3->Buffer1_ptr == DMA_ERROR_CODE)) {
+                        if (pci_dma_mapping_error(rxdp3->Buffer1_ptr)) {
                                 pci_unmap_single (sp->pdev,
                                         (dma_addr_t)rxdp3->Buffer0_ptr,
                                         BUF0_LEN, PCI_DMA_FROMDEVICE);
@@ -6984,62 +7021,62 @@ static int s2io_add_isr(struct s2io_nic * sp)
 
         /* After proper initialization of H/W, register ISR */
         if (sp->config.intr_type == MSI_X) {
-                int i, msix_tx_cnt=0,msix_rx_cnt=0;
-
-                for (i=1; (sp->s2io_entries[i].in_use == MSIX_FLG); i++) {
-                        if (sp->s2io_entries[i].type == MSIX_FIFO_TYPE) {
-                                sprintf(sp->desc[i], "%s:MSI-X-%d-TX",
+                int i, msix_rx_cnt = 0;
+
+                for (i = 0; i < sp->num_entries; i++) {
+                        if (sp->s2io_entries[i].in_use == MSIX_FLG) {
+                                if (sp->s2io_entries[i].type ==
+                                        MSIX_RING_TYPE) {
+                                        sprintf(sp->desc[i], "%s:MSI-X-%d-RX",
+                                                dev->name, i);
+                                        err = request_irq(sp->entries[i].vector,
+                                                s2io_msix_ring_handle, 0,
+                                                sp->desc[i],
+                                                sp->s2io_entries[i].arg);
+                                } else if (sp->s2io_entries[i].type ==
+                                        MSIX_ALARM_TYPE) {
+                                        sprintf(sp->desc[i], "%s:MSI-X-%d-TX",
                                         dev->name, i);
-                                err = request_irq(sp->entries[i].vector,
-                                          s2io_msix_fifo_handle, 0, sp->desc[i],
-                                                  sp->s2io_entries[i].arg);
-                                /* If either data or addr is zero print it */
-                                if(!(sp->msix_info[i].addr &&
-                                        sp->msix_info[i].data)) {
-                                        DBG_PRINT(ERR_DBG, "%s @ Addr:0x%llx "
-                                                "Data:0x%llx\n",sp->desc[i],
-                                                (unsigned long long)
-                                                sp->msix_info[i].addr,
-                                                (unsigned long long)
-                                                sp->msix_info[i].data);
-                                } else {
-                                        msix_tx_cnt++;
+                                        err = request_irq(sp->entries[i].vector,
+                                                s2io_msix_fifo_handle, 0,
+                                                sp->desc[i],
+                                                sp->s2io_entries[i].arg);
+
                                 }
-                        } else {
-                                sprintf(sp->desc[i], "%s:MSI-X-%d-RX",
-                                        dev->name, i);
-                                err = request_irq(sp->entries[i].vector,
-                                          s2io_msix_ring_handle, 0, sp->desc[i],
-                                                  sp->s2io_entries[i].arg);
-                                /* If either data or addr is zero print it */
-                                if(!(sp->msix_info[i].addr &&
+                                /* if either data or addr is zero print it. */
+                                if (!(sp->msix_info[i].addr &&
                                         sp->msix_info[i].data)) {
-                                        DBG_PRINT(ERR_DBG, "%s @ Addr:0x%llx "
-                                                "Data:0x%llx\n",sp->desc[i],
+                                        DBG_PRINT(ERR_DBG,
+                                                "%s @Addr:0x%llx Data:0x%llx\n",
+                                                sp->desc[i],
                                                 (unsigned long long)
                                                 sp->msix_info[i].addr,
                                                 (unsigned long long)
-                                                sp->msix_info[i].data);
-                                } else {
+                                                ntohl(sp->msix_info[i].data));
+                                } else
                                         msix_rx_cnt++;
+                                if (err) {
+                                        remove_msix_isr(sp);
+
+                                        DBG_PRINT(ERR_DBG,
+                                                "%s:MSI-X-%d registration "
+                                                "failed\n", dev->name, i);
+
+                                        DBG_PRINT(ERR_DBG,
+                                                "%s: Defaulting to INTA\n",
+                                                dev->name);
+                                        sp->config.intr_type = INTA;
+                                        break;
                                 }
+                                sp->s2io_entries[i].in_use =
+                                        MSIX_REGISTERED_SUCCESS;
                         }
-                        if (err) {
-                                remove_msix_isr(sp);
-                                DBG_PRINT(ERR_DBG,"%s:MSI-X-%d registration "
-                                          "failed\n", dev->name, i);
-                                DBG_PRINT(ERR_DBG, "%s: defaulting to INTA\n",
-                                                 dev->name);
-                                sp->config.intr_type = INTA;
-                                break;
-                        }
-                        sp->s2io_entries[i].in_use = MSIX_REGISTERED_SUCCESS;
                 }
                 if (!err) {
-                        printk(KERN_INFO "MSI-X-TX %d entries enabled\n",
-                                msix_tx_cnt);
                         printk(KERN_INFO "MSI-X-RX %d entries enabled\n",
-                                msix_rx_cnt);
+                                --msix_rx_cnt);
+                        DBG_PRINT(INFO_DBG, "MSI-X-TX entries enabled"
+                                                " through alarm vector\n");
                 }
         }
         if (sp->config.intr_type == INTA) {
@@ -7080,8 +7117,15 @@ static void do_s2io_card_down(struct s2io_nic * sp, int do_io)
         clear_bit(__S2IO_STATE_CARD_UP, &sp->state);
 
         /* Disable napi */
-        if (config->napi)
-                napi_disable(&sp->napi);
+        if (sp->config.napi) {
+                int off = 0;
+                if (config->intr_type ==  MSI_X) {
+                        for (; off < sp->config.rx_ring_num; off++)
+                                napi_disable(&sp->mac_control.rings[off].napi);
+                        }
+                else
+                        napi_disable(&sp->napi);
+        }
 
         /* disable Tx and Rx traffic on the NIC */
         if (do_io)
@@ -7173,8 +7217,15 @@ static int s2io_card_up(struct s2io_nic * sp)
         }
 
         /* Initialise napi */
-        if (config->napi)
-                napi_enable(&sp->napi);
+        if (config->napi) {
+                int i;
+                if (config->intr_type ==  MSI_X) {
+                        for (i = 0; i < sp->config.rx_ring_num; i++)
+                                napi_enable(&sp->mac_control.rings[i].napi);
+                } else {
+                        napi_enable(&sp->napi);
+                }
+        }
 
         /* Maintain the state prior to the open */
         if (sp->promisc_flg)
@@ -7217,7 +7268,7 @@ static int s2io_card_up(struct s2io_nic * sp)
         /*  Enable select interrupts */
         en_dis_err_alarms(sp, ENA_ALL_INTRS, ENABLE_INTRS);
         if (sp->config.intr_type != INTA)
-                en_dis_able_nic_intrs(sp, ENA_ALL_INTRS, DISABLE_INTRS);
+                en_dis_able_nic_intrs(sp, TX_TRAFFIC_INTR, ENABLE_INTRS);
         else {
                 interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR;
                 interruptible |= TX_PIC_INTR;
@@ -7615,9 +7666,6 @@ static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type,
                 rx_ring_num = MAX_RX_RINGS;
         }
 
-        if (*dev_intr_type != INTA)
-                napi = 0;
-
         if ((*dev_intr_type != INTA) && (*dev_intr_type != MSI_X)) {
                 DBG_PRINT(ERR_DBG, "s2io: Wrong intr_type requested. "
                           "Defaulting to INTA\n");
@@ -7918,8 +7966,6 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
          * will use eth_mac_addr() for  dev->set_mac_address
          * mac address will be set every time dev->open() is called
          */
-        netif_napi_add(dev, &sp->napi, s2io_poll, 32);
-
 #ifdef CONFIG_NET_POLL_CONTROLLER
         dev->poll_controller = s2io_netpoll;
 #endif
@@ -7963,6 +8009,32 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
                 }
         }
 
+        if (sp->config.intr_type == MSI_X) {
+                sp->num_entries = config->rx_ring_num + 1;
+                ret = s2io_enable_msi_x(sp);
+
+                if (!ret) {
+                        ret = s2io_test_msi(sp);
+                        /* rollback MSI-X, will re-enable during add_isr() */
+                        remove_msix_isr(sp);
+                }
+                if (ret) {
+
+                        DBG_PRINT(ERR_DBG,
+                          "%s: MSI-X requested but failed to enable\n",
+                          dev->name);
+                        sp->config.intr_type = INTA;
+                }
+        }
+
+        if (config->intr_type ==  MSI_X) {
+                for (i = 0; i < config->rx_ring_num ; i++)
+                        netif_napi_add(dev, &mac_control->rings[i].napi,
+                                s2io_poll_msix, 64);
+        } else {
+                netif_napi_add(dev, &sp->napi, s2io_poll_inta, 64);
+        }
+
         /* Not needed for Herc */
         if (sp->device_type & XFRAME_I_DEVICE) {
                 /*
@@ -8013,6 +8085,11 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
         /* store mac addresses from CAM to s2io_nic structure */
         do_s2io_store_unicast_mc(sp);
 
+        /* Configure MSIX vector for number of rings configured plus one */
+        if ((sp->device_type == XFRAME_II_DEVICE) &&
+                (config->intr_type == MSI_X))
+                sp->num_entries = config->rx_ring_num + 1;
+
          /* Store the values of the MSIX table in the s2io_nic structure */
         store_xmsi_data(sp);
         /* reset Nic and bring it to known state */
@@ -8078,8 +8155,14 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
                     break;
         }
 
-        if (napi)
+        switch (sp->config.napi) {
+        case 0:
+                DBG_PRINT(ERR_DBG, "%s: NAPI disabled\n", dev->name);
+                break;
+        case 1:
                 DBG_PRINT(ERR_DBG, "%s: NAPI enabled\n", dev->name);
+                break;
+        }
 
         DBG_PRINT(ERR_DBG, "%s: Using %d Tx fifo(s)\n", dev->name,
                 sp->config.tx_fifo_num);