bna: Brocade 10Gb Ethernet device driver
This is patch 1/6 which contains linux driver source for
Brocade's BR1010/BR1020 10Gb CEE capable ethernet adapter.
Signed-off-by: Debashis Dutt <ddutt@brocade.com>
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bna/bnad.c b/drivers/net/bna/bnad.c
new file mode 100644
index 0000000..491d148
--- /dev/null
+++ b/drivers/net/bna/bnad.c
@@ -0,0 +1,3270 @@
+/*
+ * Linux network driver for Brocade Converged Network Adapter.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License (GPL) Version 2 as
+ * published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+/*
+ * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ */
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/in.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/if_ether.h>
+#include <linux/ip.h>
+
+#include "bnad.h"
+#include "bna.h"
+#include "cna.h"
+
+DEFINE_MUTEX(bnad_fwimg_mutex);
+
+/*
+ * Module params
+ */
+static uint bnad_msix_disable;
+module_param(bnad_msix_disable, uint, 0444);
+MODULE_PARM_DESC(bnad_msix_disable, "Disable MSIX mode");
+
+static uint bnad_ioc_auto_recover = 1;
+module_param(bnad_ioc_auto_recover, uint, 0444);
+MODULE_PARM_DESC(bnad_ioc_auto_recover, "Enable / Disable auto recovery");
+
+/*
+ * Global variables
+ */
+u32 bnad_rxqs_per_cq = 2;
+
+const u8 bnad_bcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+
+/*
+ * Local MACROS
+ */
+#define BNAD_TX_UNMAPQ_DEPTH (bnad->txq_depth * 2)
+
+#define BNAD_RX_UNMAPQ_DEPTH (bnad->rxq_depth)
+
+#define BNAD_GET_MBOX_IRQ(_bnad) \
+ (((_bnad)->cfg_flags & BNAD_CF_MSIX) ? \
+ ((_bnad)->msix_table[(_bnad)->msix_num - 1].vector) : \
+ ((_bnad)->pcidev->irq))
+
+#define BNAD_FILL_UNMAPQ_MEM_REQ(_res_info, _num, _depth) \
+do { \
+ (_res_info)->res_type = BNA_RES_T_MEM; \
+ (_res_info)->res_u.mem_info.mem_type = BNA_MEM_T_KVA; \
+ (_res_info)->res_u.mem_info.num = (_num); \
+ (_res_info)->res_u.mem_info.len = \
+ sizeof(struct bnad_unmap_q) + \
+ (sizeof(struct bnad_skb_unmap) * ((_depth) - 1)); \
+} while (0)
+
+/*
+ * Reinitialize completions in CQ, once Rx is taken down
+ */
+static void
+bnad_cq_cmpl_init(struct bnad *bnad, struct bna_ccb *ccb)
+{
+ struct bna_cq_entry *cmpl, *next_cmpl;
+ unsigned int wi_range, wis = 0, ccb_prod = 0;
+ int i;
+
+ BNA_CQ_QPGE_PTR_GET(ccb_prod, ccb->sw_qpt, cmpl,
+ wi_range);
+
+ for (i = 0; i < ccb->q_depth; i++) {
+ wis++;
+ if (likely(--wi_range))
+ next_cmpl = cmpl + 1;
+ else {
+ BNA_QE_INDX_ADD(ccb_prod, wis, ccb->q_depth);
+ wis = 0;
+ BNA_CQ_QPGE_PTR_GET(ccb_prod, ccb->sw_qpt,
+ next_cmpl, wi_range);
+ }
+ cmpl->valid = 0;
+ cmpl = next_cmpl;
+ }
+}
+
+/*
+ * Frees all pending Tx Bufs
+ * At this point no activity is expected on the Q,
+ * so DMA unmap & freeing is fine.
+ */
+static void
+bnad_free_all_txbufs(struct bnad *bnad,
+ struct bna_tcb *tcb)
+{
+ u16 unmap_cons;
+ struct bnad_unmap_q *unmap_q = tcb->unmap_q;
+ struct bnad_skb_unmap *unmap_array;
+ struct sk_buff *skb = NULL;
+ int i;
+
+ unmap_array = unmap_q->unmap_array;
+
+ unmap_cons = 0;
+ while (unmap_cons < unmap_q->q_depth) {
+ skb = unmap_array[unmap_cons].skb;
+ if (!skb) {
+ unmap_cons++;
+ continue;
+ }
+ unmap_array[unmap_cons].skb = NULL;
+
+ pci_unmap_single(bnad->pcidev,
+ pci_unmap_addr(&unmap_array[unmap_cons],
+ dma_addr), skb_headlen(skb),
+ PCI_DMA_TODEVICE);
+
+ pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, 0);
+ unmap_cons++;
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ pci_unmap_page(bnad->pcidev,
+ pci_unmap_addr(&unmap_array[unmap_cons],
+ dma_addr),
+ skb_shinfo(skb)->frags[i].size,
+ PCI_DMA_TODEVICE);
+ pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr,
+ 0);
+ unmap_cons++;
+ }
+ dev_kfree_skb_any(skb);
+ }
+}
+
+/* Data Path Handlers */
+
+/*
+ * bnad_free_txbufs : Frees the Tx bufs on Tx completion
+ * Can be called in a) Interrupt context
+ * b) Sending context
+ * c) Tasklet context
+ */
+static u32
+bnad_free_txbufs(struct bnad *bnad,
+ struct bna_tcb *tcb)
+{
+ u32 sent_packets = 0, sent_bytes = 0;
+ u16 wis, unmap_cons, updated_hw_cons;
+ struct bnad_unmap_q *unmap_q = tcb->unmap_q;
+ struct bnad_skb_unmap *unmap_array;
+ struct sk_buff *skb;
+ int i;
+
+ /*
+ * Just return if TX is stopped. This check is useful
+ * when bnad_free_txbufs() runs out of a tasklet scheduled
+ * before bnad_cb_tx_cleanup() cleared BNAD_RF_TX_STARTED bit
+ * but this routine runs actually after the cleanup has been
+ * executed.
+ */
+ if (!test_bit(BNAD_RF_TX_STARTED, &bnad->run_flags))
+ return 0;
+
+ updated_hw_cons = *(tcb->hw_consumer_index);
+
+ wis = BNA_Q_INDEX_CHANGE(tcb->consumer_index,
+ updated_hw_cons, tcb->q_depth);
+
+ BUG_ON(!(wis <= BNA_QE_IN_USE_CNT(tcb, tcb->q_depth)));
+
+ unmap_array = unmap_q->unmap_array;
+ unmap_cons = unmap_q->consumer_index;
+
+ prefetch(&unmap_array[unmap_cons + 1]);
+ while (wis) {
+ skb = unmap_array[unmap_cons].skb;
+
+ unmap_array[unmap_cons].skb = NULL;
+
+ sent_packets++;
+ sent_bytes += skb->len;
+ wis -= BNA_TXQ_WI_NEEDED(1 + skb_shinfo(skb)->nr_frags);
+
+ pci_unmap_single(bnad->pcidev,
+ pci_unmap_addr(&unmap_array[unmap_cons],
+ dma_addr), skb_headlen(skb),
+ PCI_DMA_TODEVICE);
+ pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, 0);
+ BNA_QE_INDX_ADD(unmap_cons, 1, unmap_q->q_depth);
+
+ prefetch(&unmap_array[unmap_cons + 1]);
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ prefetch(&unmap_array[unmap_cons + 1]);
+
+ pci_unmap_page(bnad->pcidev,
+ pci_unmap_addr(&unmap_array[unmap_cons],
+ dma_addr),
+ skb_shinfo(skb)->frags[i].size,
+ PCI_DMA_TODEVICE);
+ pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr,
+ 0);
+ BNA_QE_INDX_ADD(unmap_cons, 1, unmap_q->q_depth);
+ }
+ dev_kfree_skb_any(skb);
+ }
+
+ /* Update consumer pointers. */
+ tcb->consumer_index = updated_hw_cons;
+ unmap_q->consumer_index = unmap_cons;
+
+ tcb->txq->tx_packets += sent_packets;
+ tcb->txq->tx_bytes += sent_bytes;
+
+ return sent_packets;
+}
+
+/* Tx Free Tasklet function */
+/* Frees for all the tcb's in all the Tx's */
+/*
+ * Scheduled from sending context, so that
+ * the fat Tx lock is not held for too long
+ * in the sending context.
+ */
+static void
+bnad_tx_free_tasklet(unsigned long bnad_ptr)
+{
+ struct bnad *bnad = (struct bnad *)bnad_ptr;
+ struct bna_tcb *tcb;
+ u32 acked;
+ int i, j;
+
+ for (i = 0; i < bnad->num_tx; i++) {
+ for (j = 0; j < bnad->num_txq_per_tx; j++) {
+ tcb = bnad->tx_info[i].tcb[j];
+ if (!tcb)
+ continue;
+ if (((u16) (*tcb->hw_consumer_index) !=
+ tcb->consumer_index) &&
+ (!test_and_set_bit(BNAD_TXQ_FREE_SENT,
+ &tcb->flags))) {
+ acked = bnad_free_txbufs(bnad, tcb);
+ bna_ib_ack(tcb->i_dbell, acked);
+ smp_mb__before_clear_bit();
+ clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
+ }
+ }
+ }
+}
+
+static u32
+bnad_tx(struct bnad *bnad, struct bna_tcb *tcb)
+{
+ struct net_device *netdev = bnad->netdev;
+ u32 sent;
+
+ if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags))
+ return 0;
+
+ sent = bnad_free_txbufs(bnad, tcb);
+ if (sent) {
+ if (netif_queue_stopped(netdev) &&
+ netif_carrier_ok(netdev) &&
+ BNA_QE_FREE_CNT(tcb, tcb->q_depth) >=
+ BNAD_NETIF_WAKE_THRESHOLD) {
+ netif_wake_queue(netdev);
+ BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
+ }
+ bna_ib_ack(tcb->i_dbell, sent);
+ } else
+ bna_ib_ack(tcb->i_dbell, 0);
+
+ smp_mb__before_clear_bit();
+ clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
+
+ return sent;
+}
+
+/* MSIX Tx Completion Handler */
+static irqreturn_t
+bnad_msix_tx(int irq, void *data)
+{
+ struct bna_tcb *tcb = (struct bna_tcb *)data;
+ struct bnad *bnad = tcb->bnad;
+
+ bnad_tx(bnad, tcb);
+
+ return IRQ_HANDLED;
+}
+
+static void
+bnad_reset_rcb(struct bnad *bnad, struct bna_rcb *rcb)
+{
+ struct bnad_unmap_q *unmap_q = rcb->unmap_q;
+
+ rcb->producer_index = 0;
+ rcb->consumer_index = 0;
+
+ unmap_q->producer_index = 0;
+ unmap_q->consumer_index = 0;
+}
+
+static void
+bnad_free_rxbufs(struct bnad *bnad, struct bna_rcb *rcb)
+{
+ struct bnad_unmap_q *unmap_q;
+ struct sk_buff *skb;
+
+ unmap_q = rcb->unmap_q;
+ while (BNA_QE_IN_USE_CNT(unmap_q, unmap_q->q_depth)) {
+ skb = unmap_q->unmap_array[unmap_q->consumer_index].skb;
+ BUG_ON(!(skb));
+ unmap_q->unmap_array[unmap_q->consumer_index].skb = NULL;
+ pci_unmap_single(bnad->pcidev, pci_unmap_addr(&unmap_q->
+ unmap_array[unmap_q->consumer_index],
+ dma_addr), rcb->rxq->buffer_size +
+ NET_IP_ALIGN, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(skb);
+ BNA_QE_INDX_ADD(unmap_q->consumer_index, 1, unmap_q->q_depth);
+ BNA_QE_INDX_ADD(rcb->consumer_index, 1, rcb->q_depth);
+ }
+
+ bnad_reset_rcb(bnad, rcb);
+}
+
+static void
+bnad_alloc_n_post_rxbufs(struct bnad *bnad, struct bna_rcb *rcb)
+{
+ u16 to_alloc, alloced, unmap_prod, wi_range;
+ struct bnad_unmap_q *unmap_q = rcb->unmap_q;
+ struct bnad_skb_unmap *unmap_array;
+ struct bna_rxq_entry *rxent;
+ struct sk_buff *skb;
+ dma_addr_t dma_addr;
+
+ alloced = 0;
+ to_alloc =
+ BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth);
+
+ unmap_array = unmap_q->unmap_array;
+ unmap_prod = unmap_q->producer_index;
+
+ BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent, wi_range);
+
+ while (to_alloc--) {
+ if (!wi_range) {
+ BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent,
+ wi_range);
+ }
+ skb = alloc_skb(rcb->rxq->buffer_size + NET_IP_ALIGN,
+ GFP_ATOMIC);
+ if (unlikely(!skb)) {
+ BNAD_UPDATE_CTR(bnad, rxbuf_alloc_failed);
+ goto finishing;
+ }
+ skb->dev = bnad->netdev;
+ skb_reserve(skb, NET_IP_ALIGN);
+ unmap_array[unmap_prod].skb = skb;
+ dma_addr = pci_map_single(bnad->pcidev, skb->data,
+ rcb->rxq->buffer_size, PCI_DMA_FROMDEVICE);
+ pci_unmap_addr_set(&unmap_array[unmap_prod], dma_addr,
+ dma_addr);
+ BNA_SET_DMA_ADDR(dma_addr, &rxent->host_addr);
+ BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth);
+
+ rxent++;
+ wi_range--;
+ alloced++;
+ }
+
+finishing:
+ if (likely(alloced)) {
+ unmap_q->producer_index = unmap_prod;
+ rcb->producer_index = unmap_prod;
+ smp_mb();
+ bna_rxq_prod_indx_doorbell(rcb);
+ }
+}
+
+/*
+ * Locking is required in the enable path
+ * because it is called from a napi poll
+ * context, where the bna_lock is not held
+ * unlike the IRQ context.
+ */
+static void
+bnad_enable_txrx_irqs(struct bnad *bnad)
+{
+ struct bna_tcb *tcb;
+ struct bna_ccb *ccb;
+ int i, j;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ for (i = 0; i < bnad->num_tx; i++) {
+ for (j = 0; j < bnad->num_txq_per_tx; j++) {
+ tcb = bnad->tx_info[i].tcb[j];
+ bna_ib_coalescing_timer_set(tcb->i_dbell,
+ tcb->txq->ib->ib_config.coalescing_timeo);
+ bna_ib_ack(tcb->i_dbell, 0);
+ }
+ }
+
+ for (i = 0; i < bnad->num_rx; i++) {
+ for (j = 0; j < bnad->num_rxp_per_rx; j++) {
+ ccb = bnad->rx_info[i].rx_ctrl[j].ccb;
+ bnad_enable_rx_irq_unsafe(ccb);
+ }
+ }
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+}
+
+static inline void
+bnad_refill_rxq(struct bnad *bnad, struct bna_rcb *rcb)
+{
+ struct bnad_unmap_q *unmap_q = rcb->unmap_q;
+
+ if (!test_and_set_bit(BNAD_RXQ_REFILL, &rcb->flags)) {
+ if (BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth)
+ >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT)
+ bnad_alloc_n_post_rxbufs(bnad, rcb);
+ smp_mb__before_clear_bit();
+ clear_bit(BNAD_RXQ_REFILL, &rcb->flags);
+ }
+}
+
+static u32
+bnad_poll_cq(struct bnad *bnad, struct bna_ccb *ccb, int budget)
+{
+ struct bna_cq_entry *cmpl, *next_cmpl;
+ struct bna_rcb *rcb = NULL;
+ unsigned int wi_range, packets = 0, wis = 0;
+ struct bnad_unmap_q *unmap_q;
+ struct sk_buff *skb;
+ u32 flags;
+ u32 qid0 = ccb->rcb[0]->rxq->rxq_id;
+ struct bna_pkt_rate *pkt_rt = &ccb->pkt_rate;
+
+ prefetch(bnad->netdev);
+ BNA_CQ_QPGE_PTR_GET(ccb->producer_index, ccb->sw_qpt, cmpl,
+ wi_range);
+ BUG_ON(!(wi_range <= ccb->q_depth));
+ while (cmpl->valid && packets < budget) {
+ packets++;
+ BNA_UPDATE_PKT_CNT(pkt_rt, ntohs(cmpl->length));
+
+ if (qid0 == cmpl->rxq_id)
+ rcb = ccb->rcb[0];
+ else
+ rcb = ccb->rcb[1];
+
+ unmap_q = rcb->unmap_q;
+
+ skb = unmap_q->unmap_array[unmap_q->consumer_index].skb;
+ BUG_ON(!(skb));
+ unmap_q->unmap_array[unmap_q->consumer_index].skb = NULL;
+ pci_unmap_single(bnad->pcidev,
+ pci_unmap_addr(&unmap_q->
+ unmap_array[unmap_q->
+ consumer_index],
+ dma_addr),
+ rcb->rxq->buffer_size,
+ PCI_DMA_FROMDEVICE);
+ BNA_QE_INDX_ADD(unmap_q->consumer_index, 1, unmap_q->q_depth);
+
+ /* Should be more efficient ? Performance ? */
+ BNA_QE_INDX_ADD(rcb->consumer_index, 1, rcb->q_depth);
+
+ wis++;
+ if (likely(--wi_range))
+ next_cmpl = cmpl + 1;
+ else {
+ BNA_QE_INDX_ADD(ccb->producer_index, wis, ccb->q_depth);
+ wis = 0;
+ BNA_CQ_QPGE_PTR_GET(ccb->producer_index, ccb->sw_qpt,
+ next_cmpl, wi_range);
+ BUG_ON(!(wi_range <= ccb->q_depth));
+ }
+ prefetch(next_cmpl);
+
+ flags = ntohl(cmpl->flags);
+ if (unlikely
+ (flags &
+ (BNA_CQ_EF_MAC_ERROR | BNA_CQ_EF_FCS_ERROR |
+ BNA_CQ_EF_TOO_LONG))) {
+ dev_kfree_skb_any(skb);
+ rcb->rxq->rx_packets_with_error++;
+ goto next;
+ }
+
+ skb_put(skb, ntohs(cmpl->length));
+ if (likely
+ (bnad->rx_csum &&
+ (((flags & BNA_CQ_EF_IPV4) &&
+ (flags & BNA_CQ_EF_L3_CKSUM_OK)) ||
+ (flags & BNA_CQ_EF_IPV6)) &&
+ (flags & (BNA_CQ_EF_TCP | BNA_CQ_EF_UDP)) &&
+ (flags & BNA_CQ_EF_L4_CKSUM_OK)))
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ else
+ skb->ip_summed = CHECKSUM_NONE;
+
+ rcb->rxq->rx_packets++;
+ rcb->rxq->rx_bytes += skb->len;
+ skb->protocol = eth_type_trans(skb, bnad->netdev);
+
+ if (bnad->vlan_grp && (flags & BNA_CQ_EF_VLAN)) {
+ struct bnad_rx_ctrl *rx_ctrl =
+ (struct bnad_rx_ctrl *)ccb->ctrl;
+ if (skb->ip_summed == CHECKSUM_UNNECESSARY)
+ vlan_gro_receive(&rx_ctrl->napi, bnad->vlan_grp,
+ ntohs(cmpl->vlan_tag), skb);
+ else
+ vlan_hwaccel_receive_skb(skb,
+ bnad->vlan_grp,
+ ntohs(cmpl->vlan_tag));
+
+ } else { /* Not VLAN tagged/stripped */
+ struct bnad_rx_ctrl *rx_ctrl =
+ (struct bnad_rx_ctrl *)ccb->ctrl;
+ if (skb->ip_summed == CHECKSUM_UNNECESSARY)
+ napi_gro_receive(&rx_ctrl->napi, skb);
+ else
+ netif_receive_skb(skb);
+ }
+
+next:
+ cmpl->valid = 0;
+ cmpl = next_cmpl;
+ }
+
+ BNA_QE_INDX_ADD(ccb->producer_index, wis, ccb->q_depth);
+
+ if (likely(ccb)) {
+ bna_ib_ack(ccb->i_dbell, packets);
+ bnad_refill_rxq(bnad, ccb->rcb[0]);
+ if (ccb->rcb[1])
+ bnad_refill_rxq(bnad, ccb->rcb[1]);
+ } else
+ bna_ib_ack(ccb->i_dbell, 0);
+
+ return packets;
+}
+
+static void
+bnad_disable_rx_irq(struct bnad *bnad, struct bna_ccb *ccb)
+{
+ bna_ib_coalescing_timer_set(ccb->i_dbell, 0);
+ bna_ib_ack(ccb->i_dbell, 0);
+}
+
+static void
+bnad_enable_rx_irq(struct bnad *bnad, struct bna_ccb *ccb)
+{
+ spin_lock_irq(&bnad->bna_lock); /* Because of polling context */
+ bnad_enable_rx_irq_unsafe(ccb);
+ spin_unlock_irq(&bnad->bna_lock);
+}
+
+static void
+bnad_netif_rx_schedule_poll(struct bnad *bnad, struct bna_ccb *ccb)
+{
+ struct bnad_rx_ctrl *rx_ctrl = (struct bnad_rx_ctrl *)(ccb->ctrl);
+ if (likely(napi_schedule_prep((&rx_ctrl->napi)))) {
+ bnad_disable_rx_irq(bnad, ccb);
+ __napi_schedule((&rx_ctrl->napi));
+ }
+ BNAD_UPDATE_CTR(bnad, netif_rx_schedule);
+}
+
+/* MSIX Rx Path Handler */
+static irqreturn_t
+bnad_msix_rx(int irq, void *data)
+{
+ struct bna_ccb *ccb = (struct bna_ccb *)data;
+ struct bnad *bnad = ccb->bnad;
+
+ bnad_netif_rx_schedule_poll(bnad, ccb);
+
+ return IRQ_HANDLED;
+}
+
+/* Interrupt handlers */
+
+/* Mbox Interrupt Handlers */
+static irqreturn_t
+bnad_msix_mbox_handler(int irq, void *data)
+{
+ u32 intr_status;
+ unsigned long flags;
+ struct net_device *netdev = data;
+ struct bnad *bnad;
+
+ bnad = netdev_priv(netdev);
+
+ /* BNA_ISR_GET(bnad); Inc Ref count */
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+
+ bna_intr_status_get(&bnad->bna, intr_status);
+
+ if (BNA_IS_MBOX_ERR_INTR(intr_status))
+ bna_mbox_handler(&bnad->bna, intr_status);
+
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ /* BNAD_ISR_PUT(bnad); Dec Ref count */
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t
+bnad_isr(int irq, void *data)
+{
+ int i, j;
+ u32 intr_status;
+ unsigned long flags;
+ struct net_device *netdev = data;
+ struct bnad *bnad = netdev_priv(netdev);
+ struct bnad_rx_info *rx_info;
+ struct bnad_rx_ctrl *rx_ctrl;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+
+ bna_intr_status_get(&bnad->bna, intr_status);
+ if (!intr_status) {
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ return IRQ_NONE;
+ }
+
+ if (BNA_IS_MBOX_ERR_INTR(intr_status)) {
+ bna_mbox_handler(&bnad->bna, intr_status);
+ if (!BNA_IS_INTX_DATA_INTR(intr_status)) {
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ goto done;
+ }
+ }
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ /* Process data interrupts */
+ for (i = 0; i < bnad->num_rx; i++) {
+ rx_info = &bnad->rx_info[i];
+ if (!rx_info->rx)
+ continue;
+ for (j = 0; j < bnad->num_rxp_per_rx; j++) {
+ rx_ctrl = &rx_info->rx_ctrl[j];
+ if (rx_ctrl->ccb)
+ bnad_netif_rx_schedule_poll(bnad,
+ rx_ctrl->ccb);
+ }
+ }
+done:
+ return IRQ_HANDLED;
+}
+
+/*
+ * Called in interrupt / callback context
+ * with bna_lock held, so cfg_flags access is OK
+ */
+static void
+bnad_enable_mbox_irq(struct bnad *bnad)
+{
+ int irq = BNAD_GET_MBOX_IRQ(bnad);
+
+ if (!(bnad->cfg_flags & BNAD_CF_MSIX))
+ return;
+
+ if (test_and_clear_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))
+ enable_irq(irq);
+ BNAD_UPDATE_CTR(bnad, mbox_intr_enabled);
+}
+
+/*
+ * Called with bnad->bna_lock held b'cos of
+ * bnad->cfg_flags access.
+ */
+void
+bnad_disable_mbox_irq(struct bnad *bnad)
+{
+ int irq = BNAD_GET_MBOX_IRQ(bnad);
+
+ if (!(bnad->cfg_flags & BNAD_CF_MSIX))
+ return;
+
+ if (!test_and_set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))
+ disable_irq_nosync(irq);
+ BNAD_UPDATE_CTR(bnad, mbox_intr_disabled);
+}
+
+/* Control Path Handlers */
+
+/* Callbacks */
+void
+bnad_cb_device_enable_mbox_intr(struct bnad *bnad)
+{
+ bnad_enable_mbox_irq(bnad);
+}
+
+void
+bnad_cb_device_disable_mbox_intr(struct bnad *bnad)
+{
+ bnad_disable_mbox_irq(bnad);
+}
+
+void
+bnad_cb_device_enabled(struct bnad *bnad, enum bna_cb_status status)
+{
+ complete(&bnad->bnad_completions.ioc_comp);
+ bnad->bnad_completions.ioc_comp_status = status;
+}
+
+void
+bnad_cb_device_disabled(struct bnad *bnad, enum bna_cb_status status)
+{
+ complete(&bnad->bnad_completions.ioc_comp);
+ bnad->bnad_completions.ioc_comp_status = status;
+}
+
+static void
+bnad_cb_port_disabled(void *arg, enum bna_cb_status status)
+{
+ struct bnad *bnad = (struct bnad *)arg;
+
+ complete(&bnad->bnad_completions.port_comp);
+
+ netif_carrier_off(bnad->netdev);
+}
+
+void
+bnad_cb_port_link_status(struct bnad *bnad,
+ enum bna_link_status link_status)
+{
+ bool link_up = 0;
+
+ link_up = (link_status == BNA_LINK_UP) || (link_status == BNA_CEE_UP);
+
+ if (link_status == BNA_CEE_UP) {
+ set_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags);
+ BNAD_UPDATE_CTR(bnad, cee_up);
+ } else
+ clear_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags);
+
+ if (link_up) {
+ if (!netif_carrier_ok(bnad->netdev)) {
+ pr_warn("bna: %s link up\n",
+ bnad->netdev->name);
+ netif_carrier_on(bnad->netdev);
+ BNAD_UPDATE_CTR(bnad, link_toggle);
+ if (test_bit(BNAD_RF_TX_STARTED, &bnad->run_flags)) {
+ /* Force an immediate Transmit Schedule */
+ pr_info("bna: %s TX_STARTED\n",
+ bnad->netdev->name);
+ netif_wake_queue(bnad->netdev);
+ BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
+ } else {
+ netif_stop_queue(bnad->netdev);
+ BNAD_UPDATE_CTR(bnad, netif_queue_stop);
+ }
+ }
+ } else {
+ if (netif_carrier_ok(bnad->netdev)) {
+ pr_warn("bna: %s link down\n",
+ bnad->netdev->name);
+ netif_carrier_off(bnad->netdev);
+ BNAD_UPDATE_CTR(bnad, link_toggle);
+ }
+ }
+}
+
+static void
+bnad_cb_tx_disabled(void *arg, struct bna_tx *tx,
+ enum bna_cb_status status)
+{
+ struct bnad *bnad = (struct bnad *)arg;
+
+ complete(&bnad->bnad_completions.tx_comp);
+}
+
+static void
+bnad_cb_tcb_setup(struct bnad *bnad, struct bna_tcb *tcb)
+{
+ struct bnad_tx_info *tx_info =
+ (struct bnad_tx_info *)tcb->txq->tx->priv;
+ struct bnad_unmap_q *unmap_q = tcb->unmap_q;
+
+ tx_info->tcb[tcb->id] = tcb;
+ unmap_q->producer_index = 0;
+ unmap_q->consumer_index = 0;
+ unmap_q->q_depth = BNAD_TX_UNMAPQ_DEPTH;
+}
+
+static void
+bnad_cb_tcb_destroy(struct bnad *bnad, struct bna_tcb *tcb)
+{
+ struct bnad_tx_info *tx_info =
+ (struct bnad_tx_info *)tcb->txq->tx->priv;
+
+ tx_info->tcb[tcb->id] = NULL;
+}
+
+static void
+bnad_cb_rcb_setup(struct bnad *bnad, struct bna_rcb *rcb)
+{
+ struct bnad_unmap_q *unmap_q = rcb->unmap_q;
+
+ unmap_q->producer_index = 0;
+ unmap_q->consumer_index = 0;
+ unmap_q->q_depth = BNAD_RX_UNMAPQ_DEPTH;
+}
+
+static void
+bnad_cb_ccb_setup(struct bnad *bnad, struct bna_ccb *ccb)
+{
+ struct bnad_rx_info *rx_info =
+ (struct bnad_rx_info *)ccb->cq->rx->priv;
+
+ rx_info->rx_ctrl[ccb->id].ccb = ccb;
+ ccb->ctrl = &rx_info->rx_ctrl[ccb->id];
+}
+
+static void
+bnad_cb_ccb_destroy(struct bnad *bnad, struct bna_ccb *ccb)
+{
+ struct bnad_rx_info *rx_info =
+ (struct bnad_rx_info *)ccb->cq->rx->priv;
+
+ rx_info->rx_ctrl[ccb->id].ccb = NULL;
+}
+
+static void
+bnad_cb_tx_stall(struct bnad *bnad, struct bna_tcb *tcb)
+{
+ struct bnad_tx_info *tx_info =
+ (struct bnad_tx_info *)tcb->txq->tx->priv;
+
+ if (tx_info != &bnad->tx_info[0])
+ return;
+
+ clear_bit(BNAD_RF_TX_STARTED, &bnad->run_flags);
+ netif_stop_queue(bnad->netdev);
+ pr_info("bna: %s TX_STOPPED\n", bnad->netdev->name);
+}
+
+static void
+bnad_cb_tx_resume(struct bnad *bnad, struct bna_tcb *tcb)
+{
+ if (test_and_set_bit(BNAD_RF_TX_STARTED, &bnad->run_flags))
+ return;
+
+ if (netif_carrier_ok(bnad->netdev)) {
+ pr_info("bna: %s TX_STARTED\n", bnad->netdev->name);
+ netif_wake_queue(bnad->netdev);
+ BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
+ }
+}
+
+static void
+bnad_cb_tx_cleanup(struct bnad *bnad, struct bna_tcb *tcb)
+{
+ struct bnad_unmap_q *unmap_q = tcb->unmap_q;
+
+ if (!tcb || (!tcb->unmap_q))
+ return;
+
+ if (!unmap_q->unmap_array)
+ return;
+
+ if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags))
+ return;
+
+ bnad_free_all_txbufs(bnad, tcb);
+
+ unmap_q->producer_index = 0;
+ unmap_q->consumer_index = 0;
+
+ smp_mb__before_clear_bit();
+ clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
+}
+
+static void
+bnad_cb_rx_cleanup(struct bnad *bnad,
+ struct bna_ccb *ccb)
+{
+ bnad_cq_cmpl_init(bnad, ccb);
+
+ bnad_free_rxbufs(bnad, ccb->rcb[0]);
+ clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags);
+
+ if (ccb->rcb[1]) {
+ bnad_free_rxbufs(bnad, ccb->rcb[1]);
+ clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[1]->flags);
+ }
+}
+
+static void
+bnad_cb_rx_post(struct bnad *bnad, struct bna_rcb *rcb)
+{
+ struct bnad_unmap_q *unmap_q = rcb->unmap_q;
+
+ set_bit(BNAD_RXQ_STARTED, &rcb->flags);
+
+ /* Now allocate & post buffers for this RCB */
+ /* !!Allocation in callback context */
+ if (!test_and_set_bit(BNAD_RXQ_REFILL, &rcb->flags)) {
+ if (BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth)
+ >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT)
+ bnad_alloc_n_post_rxbufs(bnad, rcb);
+ smp_mb__before_clear_bit();
+ clear_bit(BNAD_RXQ_REFILL, &rcb->flags);
+ }
+}
+
+static void
+bnad_cb_rx_disabled(void *arg, struct bna_rx *rx,
+ enum bna_cb_status status)
+{
+ struct bnad *bnad = (struct bnad *)arg;
+
+ complete(&bnad->bnad_completions.rx_comp);
+}
+
+static void
+bnad_cb_rx_mcast_add(struct bnad *bnad, struct bna_rx *rx,
+ enum bna_cb_status status)
+{
+ bnad->bnad_completions.mcast_comp_status = status;
+ complete(&bnad->bnad_completions.mcast_comp);
+}
+
+void
+bnad_cb_stats_get(struct bnad *bnad, enum bna_cb_status status,
+ struct bna_stats *stats)
+{
+ if (status == BNA_CB_SUCCESS)
+ BNAD_UPDATE_CTR(bnad, hw_stats_updates);
+
+ if (!netif_running(bnad->netdev) ||
+ !test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags))
+ return;
+
+ mod_timer(&bnad->stats_timer,
+ jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ));
+}
+
+void
+bnad_cb_stats_clr(struct bnad *bnad)
+{
+}
+
+/* Resource allocation, free functions */
+
+static void
+bnad_mem_free(struct bnad *bnad,
+ struct bna_mem_info *mem_info)
+{
+ int i;
+ dma_addr_t dma_pa;
+
+ if (mem_info->mdl == NULL)
+ return;
+
+ for (i = 0; i < mem_info->num; i++) {
+ if (mem_info->mdl[i].kva != NULL) {
+ if (mem_info->mem_type == BNA_MEM_T_DMA) {
+ BNA_GET_DMA_ADDR(&(mem_info->mdl[i].dma),
+ dma_pa);
+ pci_free_consistent(bnad->pcidev,
+ mem_info->mdl[i].len,
+ mem_info->mdl[i].kva, dma_pa);
+ } else
+ kfree(mem_info->mdl[i].kva);
+ }
+ }
+ kfree(mem_info->mdl);
+ mem_info->mdl = NULL;
+}
+
+static int
+bnad_mem_alloc(struct bnad *bnad,
+ struct bna_mem_info *mem_info)
+{
+ int i;
+ dma_addr_t dma_pa;
+
+ if ((mem_info->num == 0) || (mem_info->len == 0)) {
+ mem_info->mdl = NULL;
+ return 0;
+ }
+
+ mem_info->mdl = kcalloc(mem_info->num, sizeof(struct bna_mem_descr),
+ GFP_KERNEL);
+ if (mem_info->mdl == NULL)
+ return -ENOMEM;
+
+ if (mem_info->mem_type == BNA_MEM_T_DMA) {
+ for (i = 0; i < mem_info->num; i++) {
+ mem_info->mdl[i].len = mem_info->len;
+ mem_info->mdl[i].kva =
+ pci_alloc_consistent(bnad->pcidev,
+ mem_info->len, &dma_pa);
+
+ if (mem_info->mdl[i].kva == NULL)
+ goto err_return;
+
+ BNA_SET_DMA_ADDR(dma_pa,
+ &(mem_info->mdl[i].dma));
+ }
+ } else {
+ for (i = 0; i < mem_info->num; i++) {
+ mem_info->mdl[i].len = mem_info->len;
+ mem_info->mdl[i].kva = kzalloc(mem_info->len,
+ GFP_KERNEL);
+ if (mem_info->mdl[i].kva == NULL)
+ goto err_return;
+ }
+ }
+
+ return 0;
+
+err_return:
+ bnad_mem_free(bnad, mem_info);
+ return -ENOMEM;
+}
+
+/* Free IRQ for Mailbox */
+static void
+bnad_mbox_irq_free(struct bnad *bnad,
+ struct bna_intr_info *intr_info)
+{
+ int irq;
+ unsigned long flags;
+
+ if (intr_info->idl == NULL)
+ return;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+
+ bnad_disable_mbox_irq(bnad);
+
+ irq = BNAD_GET_MBOX_IRQ(bnad);
+ free_irq(irq, bnad->netdev);
+
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ kfree(intr_info->idl);
+}
+
+/*
+ * Allocates IRQ for Mailbox, but keep it disabled
+ * This will be enabled once we get the mbox enable callback
+ * from bna
+ */
+static int
+bnad_mbox_irq_alloc(struct bnad *bnad,
+ struct bna_intr_info *intr_info)
+{
+ int err;
+ unsigned long flags;
+ u32 irq;
+ irq_handler_t irq_handler;
+
+ /* Mbox should use only 1 vector */
+
+ intr_info->idl = kzalloc(sizeof(*(intr_info->idl)), GFP_KERNEL);
+ if (!intr_info->idl)
+ return -ENOMEM;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ if (bnad->cfg_flags & BNAD_CF_MSIX) {
+ irq_handler = (irq_handler_t)bnad_msix_mbox_handler;
+ irq = bnad->msix_table[bnad->msix_num - 1].vector;
+ flags = 0;
+ intr_info->intr_type = BNA_INTR_T_MSIX;
+ intr_info->idl[0].vector = bnad->msix_num - 1;
+ } else {
+ irq_handler = (irq_handler_t)bnad_isr;
+ irq = bnad->pcidev->irq;
+ flags = IRQF_SHARED;
+ intr_info->intr_type = BNA_INTR_T_INTX;
+ /* intr_info->idl.vector = 0 ? */
+ }
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ sprintf(bnad->mbox_irq_name, "%s", BNAD_NAME);
+
+ err = request_irq(irq, irq_handler, flags,
+ bnad->mbox_irq_name, bnad->netdev);
+ if (err) {
+ kfree(intr_info->idl);
+ intr_info->idl = NULL;
+ return err;
+ }
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bnad_disable_mbox_irq(bnad);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ return 0;
+}
+
+static void
+bnad_txrx_irq_free(struct bnad *bnad, struct bna_intr_info *intr_info)
+{
+ kfree(intr_info->idl);
+ intr_info->idl = NULL;
+}
+
+/* Allocates Interrupt Descriptor List for MSIX/INT-X vectors */
+static int
+bnad_txrx_irq_alloc(struct bnad *bnad, enum bnad_intr_source src,
+ uint txrx_id, struct bna_intr_info *intr_info)
+{
+ int i, vector_start = 0;
+ u32 cfg_flags;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ cfg_flags = bnad->cfg_flags;
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ if (cfg_flags & BNAD_CF_MSIX) {
+ intr_info->intr_type = BNA_INTR_T_MSIX;
+ intr_info->idl = kcalloc(intr_info->num,
+ sizeof(struct bna_intr_descr),
+ GFP_KERNEL);
+ if (!intr_info->idl)
+ return -ENOMEM;
+
+ switch (src) {
+ case BNAD_INTR_TX:
+ vector_start = txrx_id;
+ break;
+
+ case BNAD_INTR_RX:
+ vector_start = bnad->num_tx * bnad->num_txq_per_tx +
+ txrx_id;
+ break;
+
+ default:
+ BUG();
+ }
+
+ for (i = 0; i < intr_info->num; i++)
+ intr_info->idl[i].vector = vector_start + i;
+ } else {
+ intr_info->intr_type = BNA_INTR_T_INTX;
+ intr_info->num = 1;
+ intr_info->idl = kcalloc(intr_info->num,
+ sizeof(struct bna_intr_descr),
+ GFP_KERNEL);
+ if (!intr_info->idl)
+ return -ENOMEM;
+
+ switch (src) {
+ case BNAD_INTR_TX:
+ intr_info->idl[0].vector = 0x1; /* Bit mask : Tx IB */
+ break;
+
+ case BNAD_INTR_RX:
+ intr_info->idl[0].vector = 0x2; /* Bit mask : Rx IB */
+ break;
+ }
+ }
+ return 0;
+}
+
+/**
+ * NOTE: Should be called for MSIX only
+ * Unregisters Tx MSIX vector(s) from the kernel
+ */
+static void
+bnad_tx_msix_unregister(struct bnad *bnad, struct bnad_tx_info *tx_info,
+ int num_txqs)
+{
+ int i;
+ int vector_num;
+
+ for (i = 0; i < num_txqs; i++) {
+ if (tx_info->tcb[i] == NULL)
+ continue;
+
+ vector_num = tx_info->tcb[i]->intr_vector;
+ free_irq(bnad->msix_table[vector_num].vector, tx_info->tcb[i]);
+ }
+}
+
+/**
+ * NOTE: Should be called for MSIX only
+ * Registers Tx MSIX vector(s) and ISR(s), cookie with the kernel
+ */
+static int
+bnad_tx_msix_register(struct bnad *bnad, struct bnad_tx_info *tx_info,
+ uint tx_id, int num_txqs)
+{
+ int i;
+ int err;
+ int vector_num;
+
+ for (i = 0; i < num_txqs; i++) {
+ vector_num = tx_info->tcb[i]->intr_vector;
+ sprintf(tx_info->tcb[i]->name, "%s TXQ %d", bnad->netdev->name,
+ tx_id + tx_info->tcb[i]->id);
+ err = request_irq(bnad->msix_table[vector_num].vector,
+ (irq_handler_t)bnad_msix_tx, 0,
+ tx_info->tcb[i]->name,
+ tx_info->tcb[i]);
+ if (err)
+ goto err_return;
+ }
+
+ return 0;
+
+err_return:
+ if (i > 0)
+ bnad_tx_msix_unregister(bnad, tx_info, (i - 1));
+ return -1;
+}
+
+/**
+ * NOTE: Should be called for MSIX only
+ * Unregisters Rx MSIX vector(s) from the kernel
+ */
+static void
+bnad_rx_msix_unregister(struct bnad *bnad, struct bnad_rx_info *rx_info,
+ int num_rxps)
+{
+ int i;
+ int vector_num;
+
+ for (i = 0; i < num_rxps; i++) {
+ if (rx_info->rx_ctrl[i].ccb == NULL)
+ continue;
+
+ vector_num = rx_info->rx_ctrl[i].ccb->intr_vector;
+ free_irq(bnad->msix_table[vector_num].vector,
+ rx_info->rx_ctrl[i].ccb);
+ }
+}
+
+/**
+ * NOTE: Should be called for MSIX only
+ * Registers Tx MSIX vector(s) and ISR(s), cookie with the kernel
+ */
+static int
+bnad_rx_msix_register(struct bnad *bnad, struct bnad_rx_info *rx_info,
+ uint rx_id, int num_rxps)
+{
+ int i;
+ int err;
+ int vector_num;
+
+ for (i = 0; i < num_rxps; i++) {
+ vector_num = rx_info->rx_ctrl[i].ccb->intr_vector;
+ sprintf(rx_info->rx_ctrl[i].ccb->name, "%s CQ %d",
+ bnad->netdev->name,
+ rx_id + rx_info->rx_ctrl[i].ccb->id);
+ err = request_irq(bnad->msix_table[vector_num].vector,
+ (irq_handler_t)bnad_msix_rx, 0,
+ rx_info->rx_ctrl[i].ccb->name,
+ rx_info->rx_ctrl[i].ccb);
+ if (err)
+ goto err_return;
+ }
+
+ return 0;
+
+err_return:
+ if (i > 0)
+ bnad_rx_msix_unregister(bnad, rx_info, (i - 1));
+ return -1;
+}
+
+/* Free Tx object Resources */
+static void
+bnad_tx_res_free(struct bnad *bnad, struct bna_res_info *res_info)
+{
+ int i;
+
+ for (i = 0; i < BNA_TX_RES_T_MAX; i++) {
+ if (res_info[i].res_type == BNA_RES_T_MEM)
+ bnad_mem_free(bnad, &res_info[i].res_u.mem_info);
+ else if (res_info[i].res_type == BNA_RES_T_INTR)
+ bnad_txrx_irq_free(bnad, &res_info[i].res_u.intr_info);
+ }
+}
+
+/* Allocates memory and interrupt resources for Tx object */
+static int
+bnad_tx_res_alloc(struct bnad *bnad, struct bna_res_info *res_info,
+ uint tx_id)
+{
+ int i, err = 0;
+
+ for (i = 0; i < BNA_TX_RES_T_MAX; i++) {
+ if (res_info[i].res_type == BNA_RES_T_MEM)
+ err = bnad_mem_alloc(bnad,
+ &res_info[i].res_u.mem_info);
+ else if (res_info[i].res_type == BNA_RES_T_INTR)
+ err = bnad_txrx_irq_alloc(bnad, BNAD_INTR_TX, tx_id,
+ &res_info[i].res_u.intr_info);
+ if (err)
+ goto err_return;
+ }
+ return 0;
+
+err_return:
+ bnad_tx_res_free(bnad, res_info);
+ return err;
+}
+
+/* Free Rx object Resources */
+static void
+bnad_rx_res_free(struct bnad *bnad, struct bna_res_info *res_info)
+{
+ int i;
+
+ for (i = 0; i < BNA_RX_RES_T_MAX; i++) {
+ if (res_info[i].res_type == BNA_RES_T_MEM)
+ bnad_mem_free(bnad, &res_info[i].res_u.mem_info);
+ else if (res_info[i].res_type == BNA_RES_T_INTR)
+ bnad_txrx_irq_free(bnad, &res_info[i].res_u.intr_info);
+ }
+}
+
+/* Allocates memory and interrupt resources for Rx object */
+static int
+bnad_rx_res_alloc(struct bnad *bnad, struct bna_res_info *res_info,
+ uint rx_id)
+{
+ int i, err = 0;
+
+ /* All memory needs to be allocated before setup_ccbs */
+ for (i = 0; i < BNA_RX_RES_T_MAX; i++) {
+ if (res_info[i].res_type == BNA_RES_T_MEM)
+ err = bnad_mem_alloc(bnad,
+ &res_info[i].res_u.mem_info);
+ else if (res_info[i].res_type == BNA_RES_T_INTR)
+ err = bnad_txrx_irq_alloc(bnad, BNAD_INTR_RX, rx_id,
+ &res_info[i].res_u.intr_info);
+ if (err)
+ goto err_return;
+ }
+ return 0;
+
+err_return:
+ bnad_rx_res_free(bnad, res_info);
+ return err;
+}
+
+/* Timer callbacks */
+/* a) IOC timer */
+static void
+bnad_ioc_timeout(unsigned long data)
+{
+ struct bnad *bnad = (struct bnad *)data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bfa_ioc_timeout((void *) &bnad->bna.device.ioc);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+}
+
+static void
+bnad_ioc_hb_check(unsigned long data)
+{
+ struct bnad *bnad = (struct bnad *)data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bfa_ioc_hb_check((void *) &bnad->bna.device.ioc);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+}
+
+static void
+bnad_ioc_sem_timeout(unsigned long data)
+{
+ struct bnad *bnad = (struct bnad *)data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bfa_ioc_sem_timeout((void *) &bnad->bna.device.ioc);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+}
+
+/*
+ * All timer routines use bnad->bna_lock to protect against
+ * the following race, which may occur in case of no locking:
+ * Time CPU m CPU n
+ * 0 1 = test_bit
+ * 1 clear_bit
+ * 2 del_timer_sync
+ * 3 mod_timer
+ */
+
+/* b) Dynamic Interrupt Moderation Timer */
+static void
+bnad_dim_timeout(unsigned long data)
+{
+ struct bnad *bnad = (struct bnad *)data;
+ struct bnad_rx_info *rx_info;
+ struct bnad_rx_ctrl *rx_ctrl;
+ int i, j;
+ unsigned long flags;
+
+ if (!netif_carrier_ok(bnad->netdev))
+ return;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ for (i = 0; i < bnad->num_rx; i++) {
+ rx_info = &bnad->rx_info[i];
+ if (!rx_info->rx)
+ continue;
+ for (j = 0; j < bnad->num_rxp_per_rx; j++) {
+ rx_ctrl = &rx_info->rx_ctrl[j];
+ if (!rx_ctrl->ccb)
+ continue;
+ bna_rx_dim_update(rx_ctrl->ccb);
+ }
+ }
+
+ /* Check for BNAD_CF_DIM_ENABLED, does not eleminate a race */
+ if (test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags))
+ mod_timer(&bnad->dim_timer,
+ jiffies + msecs_to_jiffies(BNAD_DIM_TIMER_FREQ));
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+}
+
+/* c) Statistics Timer */
+static void
+bnad_stats_timeout(unsigned long data)
+{
+ struct bnad *bnad = (struct bnad *)data;
+ unsigned long flags;
+
+ if (!netif_running(bnad->netdev) ||
+ !test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags))
+ return;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_stats_get(&bnad->bna);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+}
+
+/*
+ * Set up timer for DIM
+ * Called with bnad->bna_lock held
+ */
+void
+bnad_dim_timer_start(struct bnad *bnad)
+{
+ if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED &&
+ !test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags)) {
+ setup_timer(&bnad->dim_timer, bnad_dim_timeout,
+ (unsigned long)bnad);
+ set_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags);
+ mod_timer(&bnad->dim_timer,
+ jiffies + msecs_to_jiffies(BNAD_DIM_TIMER_FREQ));
+ }
+}
+
+/*
+ * Set up timer for statistics
+ * Called with mutex_lock(&bnad->conf_mutex) held
+ */
+static void
+bnad_stats_timer_start(struct bnad *bnad)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ if (!test_and_set_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) {
+ setup_timer(&bnad->stats_timer, bnad_stats_timeout,
+ (unsigned long)bnad);
+ mod_timer(&bnad->stats_timer,
+ jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ));
+ }
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+}
+
+/*
+ * Stops the stats timer
+ * Called with mutex_lock(&bnad->conf_mutex) held
+ */
+static void
+bnad_stats_timer_stop(struct bnad *bnad)
+{
+ int to_del = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ if (test_and_clear_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags))
+ to_del = 1;
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ if (to_del)
+ del_timer_sync(&bnad->stats_timer);
+}
+
+/* Utilities */
+
+static void
+bnad_netdev_mc_list_get(struct net_device *netdev, u8 *mc_list)
+{
+ int i = 1; /* Index 0 has broadcast address */
+ struct netdev_hw_addr *mc_addr;
+
+ netdev_for_each_mc_addr(mc_addr, netdev) {
+ memcpy(&mc_list[i * ETH_ALEN], &mc_addr->addr[0],
+ ETH_ALEN);
+ i++;
+ }
+}
+
+static int
+bnad_napi_poll_rx(struct napi_struct *napi, int budget)
+{
+ struct bnad_rx_ctrl *rx_ctrl =
+ container_of(napi, struct bnad_rx_ctrl, napi);
+ struct bna_ccb *ccb;
+ struct bnad *bnad;
+ int rcvd = 0;
+
+ ccb = rx_ctrl->ccb;
+
+ bnad = ccb->bnad;
+
+ if (!netif_carrier_ok(bnad->netdev))
+ goto poll_exit;
+
+ rcvd = bnad_poll_cq(bnad, ccb, budget);
+ if (rcvd == budget)
+ return rcvd;
+
+poll_exit:
+ napi_complete((napi));
+
+ BNAD_UPDATE_CTR(bnad, netif_rx_complete);
+
+ bnad_enable_rx_irq(bnad, ccb);
+ return rcvd;
+}
+
+static int
+bnad_napi_poll_txrx(struct napi_struct *napi, int budget)
+{
+ struct bnad_rx_ctrl *rx_ctrl =
+ container_of(napi, struct bnad_rx_ctrl, napi);
+ struct bna_ccb *ccb;
+ struct bnad *bnad;
+ int rcvd = 0;
+ int i, j;
+
+ ccb = rx_ctrl->ccb;
+
+ bnad = ccb->bnad;
+
+ if (!netif_carrier_ok(bnad->netdev))
+ goto poll_exit;
+
+ /* Handle Tx Completions, if any */
+ for (i = 0; i < bnad->num_tx; i++) {
+ for (j = 0; j < bnad->num_txq_per_tx; j++)
+ bnad_tx(bnad, bnad->tx_info[i].tcb[j]);
+ }
+
+ /* Handle Rx Completions */
+ rcvd = bnad_poll_cq(bnad, ccb, budget);
+ if (rcvd == budget)
+ return rcvd;
+poll_exit:
+ napi_complete((napi));
+
+ BNAD_UPDATE_CTR(bnad, netif_rx_complete);
+
+ bnad_enable_txrx_irqs(bnad);
+ return rcvd;
+}
+
+static void
+bnad_napi_enable(struct bnad *bnad, u32 rx_id)
+{
+ int (*napi_poll) (struct napi_struct *, int);
+ struct bnad_rx_ctrl *rx_ctrl;
+ int i;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ if (bnad->cfg_flags & BNAD_CF_MSIX)
+ napi_poll = bnad_napi_poll_rx;
+ else
+ napi_poll = bnad_napi_poll_txrx;
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ /* Initialize & enable NAPI */
+ for (i = 0; i < bnad->num_rxp_per_rx; i++) {
+ rx_ctrl = &bnad->rx_info[rx_id].rx_ctrl[i];
+ netif_napi_add(bnad->netdev, &rx_ctrl->napi,
+ napi_poll, 64);
+ napi_enable(&rx_ctrl->napi);
+ }
+}
+
+static void
+bnad_napi_disable(struct bnad *bnad, u32 rx_id)
+{
+ int i;
+
+ /* First disable and then clean up */
+ for (i = 0; i < bnad->num_rxp_per_rx; i++) {
+ napi_disable(&bnad->rx_info[rx_id].rx_ctrl[i].napi);
+ netif_napi_del(&bnad->rx_info[rx_id].rx_ctrl[i].napi);
+ }
+}
+
+/* Should be held with conf_lock held */
+void
+bnad_cleanup_tx(struct bnad *bnad, uint tx_id)
+{
+ struct bnad_tx_info *tx_info = &bnad->tx_info[tx_id];
+ struct bna_res_info *res_info = &bnad->tx_res_info[tx_id].res_info[0];
+ unsigned long flags;
+
+ if (!tx_info->tx)
+ return;
+
+ init_completion(&bnad->bnad_completions.tx_comp);
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_tx_disable(tx_info->tx, BNA_HARD_CLEANUP, bnad_cb_tx_disabled);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ wait_for_completion(&bnad->bnad_completions.tx_comp);
+
+ if (tx_info->tcb[0]->intr_type == BNA_INTR_T_MSIX)
+ bnad_tx_msix_unregister(bnad, tx_info,
+ bnad->num_txq_per_tx);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_tx_destroy(tx_info->tx);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ tx_info->tx = NULL;
+
+ if (0 == tx_id)
+ tasklet_kill(&bnad->tx_free_tasklet);
+
+ bnad_tx_res_free(bnad, res_info);
+}
+
+/* Should be held with conf_lock held */
+int
+bnad_setup_tx(struct bnad *bnad, uint tx_id)
+{
+ int err;
+ struct bnad_tx_info *tx_info = &bnad->tx_info[tx_id];
+ struct bna_res_info *res_info = &bnad->tx_res_info[tx_id].res_info[0];
+ struct bna_intr_info *intr_info =
+ &res_info[BNA_TX_RES_INTR_T_TXCMPL].res_u.intr_info;
+ struct bna_tx_config *tx_config = &bnad->tx_config[tx_id];
+ struct bna_tx_event_cbfn tx_cbfn;
+ struct bna_tx *tx;
+ unsigned long flags;
+
+ /* Initialize the Tx object configuration */
+ tx_config->num_txq = bnad->num_txq_per_tx;
+ tx_config->txq_depth = bnad->txq_depth;
+ tx_config->tx_type = BNA_TX_T_REGULAR;
+
+ /* Initialize the tx event handlers */
+ tx_cbfn.tcb_setup_cbfn = bnad_cb_tcb_setup;
+ tx_cbfn.tcb_destroy_cbfn = bnad_cb_tcb_destroy;
+ tx_cbfn.tx_stall_cbfn = bnad_cb_tx_stall;
+ tx_cbfn.tx_resume_cbfn = bnad_cb_tx_resume;
+ tx_cbfn.tx_cleanup_cbfn = bnad_cb_tx_cleanup;
+
+ /* Get BNA's resource requirement for one tx object */
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_tx_res_req(bnad->num_txq_per_tx,
+ bnad->txq_depth, res_info);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ /* Fill Unmap Q memory requirements */
+ BNAD_FILL_UNMAPQ_MEM_REQ(
+ &res_info[BNA_TX_RES_MEM_T_UNMAPQ],
+ bnad->num_txq_per_tx,
+ BNAD_TX_UNMAPQ_DEPTH);
+
+ /* Allocate resources */
+ err = bnad_tx_res_alloc(bnad, res_info, tx_id);
+ if (err)
+ return err;
+
+ /* Ask BNA to create one Tx object, supplying required resources */
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ tx = bna_tx_create(&bnad->bna, bnad, tx_config, &tx_cbfn, res_info,
+ tx_info);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ if (!tx)
+ goto err_return;
+ tx_info->tx = tx;
+
+ /* Register ISR for the Tx object */
+ if (intr_info->intr_type == BNA_INTR_T_MSIX) {
+ err = bnad_tx_msix_register(bnad, tx_info,
+ tx_id, bnad->num_txq_per_tx);
+ if (err)
+ goto err_return;
+ }
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_tx_enable(tx);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ return 0;
+
+err_return:
+ bnad_tx_res_free(bnad, res_info);
+ return err;
+}
+
+/* Setup the rx config for bna_rx_create */
+/* bnad decides the configuration */
+static void
+bnad_init_rx_config(struct bnad *bnad, struct bna_rx_config *rx_config)
+{
+ rx_config->rx_type = BNA_RX_T_REGULAR;
+ rx_config->num_paths = bnad->num_rxp_per_rx;
+
+ if (bnad->num_rxp_per_rx > 1) {
+ rx_config->rss_status = BNA_STATUS_T_ENABLED;
+ rx_config->rss_config.hash_type =
+ (BFI_RSS_T_V4_TCP |
+ BFI_RSS_T_V6_TCP |
+ BFI_RSS_T_V4_IP |
+ BFI_RSS_T_V6_IP);
+ rx_config->rss_config.hash_mask =
+ bnad->num_rxp_per_rx - 1;
+ get_random_bytes(rx_config->rss_config.toeplitz_hash_key,
+ sizeof(rx_config->rss_config.toeplitz_hash_key));
+ } else {
+ rx_config->rss_status = BNA_STATUS_T_DISABLED;
+ memset(&rx_config->rss_config, 0,
+ sizeof(rx_config->rss_config));
+ }
+ rx_config->rxp_type = BNA_RXP_SLR;
+ rx_config->q_depth = bnad->rxq_depth;
+
+ rx_config->small_buff_size = BFI_SMALL_RXBUF_SIZE;
+
+ rx_config->vlan_strip_status = BNA_STATUS_T_ENABLED;
+}
+
+/* Called with mutex_lock(&bnad->conf_mutex) held */
+void
+bnad_cleanup_rx(struct bnad *bnad, uint rx_id)
+{
+ struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id];
+ struct bna_rx_config *rx_config = &bnad->rx_config[rx_id];
+ struct bna_res_info *res_info = &bnad->rx_res_info[rx_id].res_info[0];
+ unsigned long flags;
+ int dim_timer_del = 0;
+
+ if (!rx_info->rx)
+ return;
+
+ if (0 == rx_id) {
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ dim_timer_del = bnad_dim_timer_running(bnad);
+ if (dim_timer_del)
+ clear_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ if (dim_timer_del)
+ del_timer_sync(&bnad->dim_timer);
+ }
+
+ bnad_napi_disable(bnad, rx_id);
+
+ init_completion(&bnad->bnad_completions.rx_comp);
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_rx_disable(rx_info->rx, BNA_HARD_CLEANUP, bnad_cb_rx_disabled);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ wait_for_completion(&bnad->bnad_completions.rx_comp);
+
+ if (rx_info->rx_ctrl[0].ccb->intr_type == BNA_INTR_T_MSIX)
+ bnad_rx_msix_unregister(bnad, rx_info, rx_config->num_paths);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_rx_destroy(rx_info->rx);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ rx_info->rx = NULL;
+
+ bnad_rx_res_free(bnad, res_info);
+}
+
+/* Called with mutex_lock(&bnad->conf_mutex) held */
+int
+bnad_setup_rx(struct bnad *bnad, uint rx_id)
+{
+ int err;
+ struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id];
+ struct bna_res_info *res_info = &bnad->rx_res_info[rx_id].res_info[0];
+ struct bna_intr_info *intr_info =
+ &res_info[BNA_RX_RES_T_INTR].res_u.intr_info;
+ struct bna_rx_config *rx_config = &bnad->rx_config[rx_id];
+ struct bna_rx_event_cbfn rx_cbfn;
+ struct bna_rx *rx;
+ unsigned long flags;
+
+ /* Initialize the Rx object configuration */
+ bnad_init_rx_config(bnad, rx_config);
+
+ /* Initialize the Rx event handlers */
+ rx_cbfn.rcb_setup_cbfn = bnad_cb_rcb_setup;
+ rx_cbfn.rcb_destroy_cbfn = NULL;
+ rx_cbfn.ccb_setup_cbfn = bnad_cb_ccb_setup;
+ rx_cbfn.ccb_destroy_cbfn = bnad_cb_ccb_destroy;
+ rx_cbfn.rx_cleanup_cbfn = bnad_cb_rx_cleanup;
+ rx_cbfn.rx_post_cbfn = bnad_cb_rx_post;
+
+ /* Get BNA's resource requirement for one Rx object */
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_rx_res_req(rx_config, res_info);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ /* Fill Unmap Q memory requirements */
+ BNAD_FILL_UNMAPQ_MEM_REQ(
+ &res_info[BNA_RX_RES_MEM_T_UNMAPQ],
+ rx_config->num_paths +
+ ((rx_config->rxp_type == BNA_RXP_SINGLE) ? 0 :
+ rx_config->num_paths), BNAD_RX_UNMAPQ_DEPTH);
+
+ /* Allocate resource */
+ err = bnad_rx_res_alloc(bnad, res_info, rx_id);
+ if (err)
+ return err;
+
+ /* Ask BNA to create one Rx object, supplying required resources */
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ rx = bna_rx_create(&bnad->bna, bnad, rx_config, &rx_cbfn, res_info,
+ rx_info);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ if (!rx)
+ goto err_return;
+ rx_info->rx = rx;
+
+ /* Register ISR for the Rx object */
+ if (intr_info->intr_type == BNA_INTR_T_MSIX) {
+ err = bnad_rx_msix_register(bnad, rx_info, rx_id,
+ rx_config->num_paths);
+ if (err)
+ goto err_return;
+ }
+
+ /* Enable NAPI */
+ bnad_napi_enable(bnad, rx_id);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ if (0 == rx_id) {
+ /* Set up Dynamic Interrupt Moderation Vector */
+ if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED)
+ bna_rx_dim_reconfig(&bnad->bna, bna_napi_dim_vector);
+
+ /* Enable VLAN filtering only on the default Rx */
+ bna_rx_vlanfilter_enable(rx);
+
+ /* Start the DIM timer */
+ bnad_dim_timer_start(bnad);
+ }
+
+ bna_rx_enable(rx);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ return 0;
+
+err_return:
+ bnad_cleanup_rx(bnad, rx_id);
+ return err;
+}
+
+/* Called with conf_lock & bnad->bna_lock held */
+void
+bnad_tx_coalescing_timeo_set(struct bnad *bnad)
+{
+ struct bnad_tx_info *tx_info;
+
+ tx_info = &bnad->tx_info[0];
+ if (!tx_info->tx)
+ return;
+
+ bna_tx_coalescing_timeo_set(tx_info->tx, bnad->tx_coalescing_timeo);
+}
+
+/* Called with conf_lock & bnad->bna_lock held */
+void
+bnad_rx_coalescing_timeo_set(struct bnad *bnad)
+{
+ struct bnad_rx_info *rx_info;
+ int i;
+
+ for (i = 0; i < bnad->num_rx; i++) {
+ rx_info = &bnad->rx_info[i];
+ if (!rx_info->rx)
+ continue;
+ bna_rx_coalescing_timeo_set(rx_info->rx,
+ bnad->rx_coalescing_timeo);
+ }
+}
+
+/*
+ * Called with bnad->bna_lock held
+ */
+static int
+bnad_mac_addr_set_locked(struct bnad *bnad, u8 *mac_addr)
+{
+ int ret;
+
+ if (!is_valid_ether_addr(mac_addr))
+ return -EADDRNOTAVAIL;
+
+ /* If datapath is down, pretend everything went through */
+ if (!bnad->rx_info[0].rx)
+ return 0;
+
+ ret = bna_rx_ucast_set(bnad->rx_info[0].rx, mac_addr, NULL);
+ if (ret != BNA_CB_SUCCESS)
+ return -EADDRNOTAVAIL;
+
+ return 0;
+}
+
+/* Should be called with conf_lock held */
+static int
+bnad_enable_default_bcast(struct bnad *bnad)
+{
+ struct bnad_rx_info *rx_info = &bnad->rx_info[0];
+ int ret;
+ unsigned long flags;
+
+ init_completion(&bnad->bnad_completions.mcast_comp);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ ret = bna_rx_mcast_add(rx_info->rx, (u8 *)bnad_bcast_addr,
+ bnad_cb_rx_mcast_add);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ if (ret == BNA_CB_SUCCESS)
+ wait_for_completion(&bnad->bnad_completions.mcast_comp);
+ else
+ return -ENODEV;
+
+ if (bnad->bnad_completions.mcast_comp_status != BNA_CB_SUCCESS)
+ return -ENODEV;
+
+ return 0;
+}
+
+/* Statistics utilities */
+void
+bnad_netdev_qstats_fill(struct bnad *bnad)
+{
+ struct net_device_stats *net_stats = &bnad->net_stats;
+ int i, j;
+
+ for (i = 0; i < bnad->num_rx; i++) {
+ for (j = 0; j < bnad->num_rxp_per_rx; j++) {
+ if (bnad->rx_info[i].rx_ctrl[j].ccb) {
+ net_stats->rx_packets += bnad->rx_info[i].
+ rx_ctrl[j].ccb->rcb[0]->rxq->rx_packets;
+ net_stats->rx_bytes += bnad->rx_info[i].
+ rx_ctrl[j].ccb->rcb[0]->rxq->rx_bytes;
+ if (bnad->rx_info[i].rx_ctrl[j].ccb->rcb[1] &&
+ bnad->rx_info[i].rx_ctrl[j].ccb->
+ rcb[1]->rxq) {
+ net_stats->rx_packets +=
+ bnad->rx_info[i].rx_ctrl[j].
+ ccb->rcb[1]->rxq->rx_packets;
+ net_stats->rx_bytes +=
+ bnad->rx_info[i].rx_ctrl[j].
+ ccb->rcb[1]->rxq->rx_bytes;
+ }
+ }
+ }
+ }
+ for (i = 0; i < bnad->num_tx; i++) {
+ for (j = 0; j < bnad->num_txq_per_tx; j++) {
+ if (bnad->tx_info[i].tcb[j]) {
+ net_stats->tx_packets +=
+ bnad->tx_info[i].tcb[j]->txq->tx_packets;
+ net_stats->tx_bytes +=
+ bnad->tx_info[i].tcb[j]->txq->tx_bytes;
+ }
+ }
+ }
+}
+
+/*
+ * Must be called with the bna_lock held.
+ */
+void
+bnad_netdev_hwstats_fill(struct bnad *bnad)
+{
+ struct bfi_ll_stats_mac *mac_stats;
+ struct net_device_stats *net_stats = &bnad->net_stats;
+ u64 bmap;
+ int i;
+
+ mac_stats = &bnad->stats.bna_stats->hw_stats->mac_stats;
+ net_stats->rx_errors =
+ mac_stats->rx_fcs_error + mac_stats->rx_alignment_error +
+ mac_stats->rx_frame_length_error + mac_stats->rx_code_error +
+ mac_stats->rx_undersize;
+ net_stats->tx_errors = mac_stats->tx_fcs_error +
+ mac_stats->tx_undersize;
+ net_stats->rx_dropped = mac_stats->rx_drop;
+ net_stats->tx_dropped = mac_stats->tx_drop;
+ net_stats->multicast = mac_stats->rx_multicast;
+ net_stats->collisions = mac_stats->tx_total_collision;
+
+ net_stats->rx_length_errors = mac_stats->rx_frame_length_error;
+
+ /* receive ring buffer overflow ?? */
+
+ net_stats->rx_crc_errors = mac_stats->rx_fcs_error;
+ net_stats->rx_frame_errors = mac_stats->rx_alignment_error;
+ /* recv'r fifo overrun */
+ bmap = (u64)bnad->stats.bna_stats->rxf_bmap[0] |
+ ((u64)bnad->stats.bna_stats->rxf_bmap[1] << 32);
+ for (i = 0; bmap && (i < BFI_LL_RXF_ID_MAX); i++) {
+ if (bmap & 1) {
+ net_stats->rx_fifo_errors =
+ bnad->stats.bna_stats->
+ hw_stats->rxf_stats[i].frame_drops;
+ break;
+ }
+ bmap >>= 1;
+ }
+}
+
+static void
+bnad_mbox_irq_sync(struct bnad *bnad)
+{
+ u32 irq;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ if (bnad->cfg_flags & BNAD_CF_MSIX)
+ irq = bnad->msix_table[bnad->msix_num - 1].vector;
+ else
+ irq = bnad->pcidev->irq;
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ synchronize_irq(irq);
+}
+
+/* Utility used by bnad_start_xmit, for doing TSO */
+static int
+bnad_tso_prepare(struct bnad *bnad, struct sk_buff *skb)
+{
+ int err;
+
+ /* SKB_GSO_TCPV4 and SKB_GSO_TCPV6 is defined since 2.6.18. */
+ BUG_ON(!(skb_shinfo(skb)->gso_type == SKB_GSO_TCPV4 ||
+ skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6));
+ if (skb_header_cloned(skb)) {
+ err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+ if (err) {
+ BNAD_UPDATE_CTR(bnad, tso_err);
+ return err;
+ }
+ }
+
+ /*
+ * For TSO, the TCP checksum field is seeded with pseudo-header sum
+ * excluding the length field.
+ */
+ if (skb->protocol == htons(ETH_P_IP)) {
+ struct iphdr *iph = ip_hdr(skb);
+
+ /* Do we really need these? */
+ iph->tot_len = 0;
+ iph->check = 0;
+
+ tcp_hdr(skb)->check =
+ ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0,
+ IPPROTO_TCP, 0);
+ BNAD_UPDATE_CTR(bnad, tso4);
+ } else {
+ struct ipv6hdr *ipv6h = ipv6_hdr(skb);
+
+ BUG_ON(!(skb->protocol == htons(ETH_P_IPV6)));
+ ipv6h->payload_len = 0;
+ tcp_hdr(skb)->check =
+ ~csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr, 0,
+ IPPROTO_TCP, 0);
+ BNAD_UPDATE_CTR(bnad, tso6);
+ }
+
+ return 0;
+}
+
+/*
+ * Initialize Q numbers depending on Rx Paths
+ * Called with bnad->bna_lock held, because of cfg_flags
+ * access.
+ */
+static void
+bnad_q_num_init(struct bnad *bnad)
+{
+ int rxps;
+
+ rxps = min((uint)num_online_cpus(),
+ (uint)(BNAD_MAX_RXS * BNAD_MAX_RXPS_PER_RX));
+
+ if (!(bnad->cfg_flags & BNAD_CF_MSIX))
+ rxps = 1; /* INTx */
+
+ bnad->num_rx = 1;
+ bnad->num_tx = 1;
+ bnad->num_rxp_per_rx = rxps;
+ bnad->num_txq_per_tx = BNAD_TXQ_NUM;
+}
+
+/*
+ * Adjusts the Q numbers, given a number of msix vectors
+ * Give preference to RSS as opposed to Tx priority Queues,
+ * in such a case, just use 1 Tx Q
+ * Called with bnad->bna_lock held b'cos of cfg_flags access
+ */
+static void
+bnad_q_num_adjust(struct bnad *bnad, int msix_vectors)
+{
+ bnad->num_txq_per_tx = 1;
+ if ((msix_vectors >= (bnad->num_tx * bnad->num_txq_per_tx) +
+ bnad_rxqs_per_cq + BNAD_MAILBOX_MSIX_VECTORS) &&
+ (bnad->cfg_flags & BNAD_CF_MSIX)) {
+ bnad->num_rxp_per_rx = msix_vectors -
+ (bnad->num_tx * bnad->num_txq_per_tx) -
+ BNAD_MAILBOX_MSIX_VECTORS;
+ } else
+ bnad->num_rxp_per_rx = 1;
+}
+
+static void
+bnad_set_netdev_perm_addr(struct bnad *bnad)
+{
+ struct net_device *netdev = bnad->netdev;
+
+ memcpy(netdev->perm_addr, &bnad->perm_addr, netdev->addr_len);
+ if (is_zero_ether_addr(netdev->dev_addr))
+ memcpy(netdev->dev_addr, &bnad->perm_addr, netdev->addr_len);
+}
+
+/* Enable / disable device */
+static void
+bnad_device_disable(struct bnad *bnad)
+{
+ unsigned long flags;
+
+ init_completion(&bnad->bnad_completions.ioc_comp);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_device_disable(&bnad->bna.device, BNA_HARD_CLEANUP);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ wait_for_completion(&bnad->bnad_completions.ioc_comp);
+
+}
+
+static int
+bnad_device_enable(struct bnad *bnad)
+{
+ int err = 0;
+ unsigned long flags;
+
+ init_completion(&bnad->bnad_completions.ioc_comp);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_device_enable(&bnad->bna.device);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ wait_for_completion(&bnad->bnad_completions.ioc_comp);
+
+ if (bnad->bnad_completions.ioc_comp_status)
+ err = bnad->bnad_completions.ioc_comp_status;
+
+ return err;
+}
+
+/* Free BNA resources */
+static void
+bnad_res_free(struct bnad *bnad)
+{
+ int i;
+ struct bna_res_info *res_info = &bnad->res_info[0];
+
+ for (i = 0; i < BNA_RES_T_MAX; i++) {
+ if (res_info[i].res_type == BNA_RES_T_MEM)
+ bnad_mem_free(bnad, &res_info[i].res_u.mem_info);
+ else
+ bnad_mbox_irq_free(bnad, &res_info[i].res_u.intr_info);
+ }
+}
+
+/* Allocates memory and interrupt resources for BNA */
+static int
+bnad_res_alloc(struct bnad *bnad)
+{
+ int i, err;
+ struct bna_res_info *res_info = &bnad->res_info[0];
+
+ for (i = 0; i < BNA_RES_T_MAX; i++) {
+ if (res_info[i].res_type == BNA_RES_T_MEM)
+ err = bnad_mem_alloc(bnad, &res_info[i].res_u.mem_info);
+ else
+ err = bnad_mbox_irq_alloc(bnad,
+ &res_info[i].res_u.intr_info);
+ if (err)
+ goto err_return;
+ }
+ return 0;
+
+err_return:
+ bnad_res_free(bnad);
+ return err;
+}
+
+/* Interrupt enable / disable */
+static void
+bnad_enable_msix(struct bnad *bnad)
+{
+ int i, ret;
+ u32 tot_msix_num;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ if (!(bnad->cfg_flags & BNAD_CF_MSIX)) {
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ return;
+ }
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ if (bnad->msix_table)
+ return;
+
+ tot_msix_num = bnad->msix_num + bnad->msix_diag_num;
+
+ bnad->msix_table =
+ kcalloc(tot_msix_num, sizeof(struct msix_entry), GFP_KERNEL);
+
+ if (!bnad->msix_table)
+ goto intx_mode;
+
+ for (i = 0; i < tot_msix_num; i++)
+ bnad->msix_table[i].entry = i;
+
+ ret = pci_enable_msix(bnad->pcidev, bnad->msix_table, tot_msix_num);
+ if (ret > 0) {
+ /* Not enough MSI-X vectors. */
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ /* ret = #of vectors that we got */
+ bnad_q_num_adjust(bnad, ret);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ bnad->msix_num = (bnad->num_tx * bnad->num_txq_per_tx)
+ + (bnad->num_rx
+ * bnad->num_rxp_per_rx) +
+ BNAD_MAILBOX_MSIX_VECTORS;
+ tot_msix_num = bnad->msix_num + bnad->msix_diag_num;
+
+ /* Try once more with adjusted numbers */
+ /* If this fails, fall back to INTx */
+ ret = pci_enable_msix(bnad->pcidev, bnad->msix_table,
+ tot_msix_num);
+ if (ret)
+ goto intx_mode;
+
+ } else if (ret < 0)
+ goto intx_mode;
+ return;
+
+intx_mode:
+
+ kfree(bnad->msix_table);
+ bnad->msix_table = NULL;
+ bnad->msix_num = 0;
+ bnad->msix_diag_num = 0;
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bnad->cfg_flags &= ~BNAD_CF_MSIX;
+ bnad_q_num_init(bnad);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+}
+
+static void
+bnad_disable_msix(struct bnad *bnad)
+{
+ u32 cfg_flags;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ cfg_flags = bnad->cfg_flags;
+ if (bnad->cfg_flags & BNAD_CF_MSIX)
+ bnad->cfg_flags &= ~BNAD_CF_MSIX;
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ if (cfg_flags & BNAD_CF_MSIX) {
+ pci_disable_msix(bnad->pcidev);
+ kfree(bnad->msix_table);
+ bnad->msix_table = NULL;
+ }
+}
+
+/* Netdev entry points */
+static int
+bnad_open(struct net_device *netdev)
+{
+ int err;
+ struct bnad *bnad = netdev_priv(netdev);
+ struct bna_pause_config pause_config;
+ int mtu;
+ unsigned long flags;
+
+ mutex_lock(&bnad->conf_mutex);
+
+ /* Tx */
+ err = bnad_setup_tx(bnad, 0);
+ if (err)
+ goto err_return;
+
+ /* Rx */
+ err = bnad_setup_rx(bnad, 0);
+ if (err)
+ goto cleanup_tx;
+
+ /* Port */
+ pause_config.tx_pause = 0;
+ pause_config.rx_pause = 0;
+
+ mtu = ETH_HLEN + bnad->netdev->mtu + ETH_FCS_LEN;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_port_mtu_set(&bnad->bna.port, mtu, NULL);
+ bna_port_pause_config(&bnad->bna.port, &pause_config, NULL);
+ bna_port_enable(&bnad->bna.port);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ /* Enable broadcast */
+ bnad_enable_default_bcast(bnad);
+
+ /* Set the UCAST address */
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bnad_mac_addr_set_locked(bnad, netdev->dev_addr);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ /* Start the stats timer */
+ bnad_stats_timer_start(bnad);
+
+ mutex_unlock(&bnad->conf_mutex);
+
+ return 0;
+
+cleanup_tx:
+ bnad_cleanup_tx(bnad, 0);
+
+err_return:
+ mutex_unlock(&bnad->conf_mutex);
+ return err;
+}
+
+static int
+bnad_stop(struct net_device *netdev)
+{
+ struct bnad *bnad = netdev_priv(netdev);
+ unsigned long flags;
+
+ mutex_lock(&bnad->conf_mutex);
+
+ /* Stop the stats timer */
+ bnad_stats_timer_stop(bnad);
+
+ init_completion(&bnad->bnad_completions.port_comp);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_port_disable(&bnad->bna.port, BNA_HARD_CLEANUP,
+ bnad_cb_port_disabled);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ wait_for_completion(&bnad->bnad_completions.port_comp);
+
+ bnad_cleanup_tx(bnad, 0);
+ bnad_cleanup_rx(bnad, 0);
+
+ /* Synchronize mailbox IRQ */
+ bnad_mbox_irq_sync(bnad);
+
+ mutex_unlock(&bnad->conf_mutex);
+
+ return 0;
+}
+
+/* TX */
+/*
+ * bnad_start_xmit : Netdev entry point for Transmit
+ * Called under lock held by net_device
+ */
+static netdev_tx_t
+bnad_start_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct bnad *bnad = netdev_priv(netdev);
+
+ u16 txq_prod, vlan_tag = 0;
+ u32 unmap_prod, wis, wis_used, wi_range;
+ u32 vectors, vect_id, i, acked;
+ u32 tx_id;
+ int err;
+
+ struct bnad_tx_info *tx_info;
+ struct bna_tcb *tcb;
+ struct bnad_unmap_q *unmap_q;
+ dma_addr_t dma_addr;
+ struct bna_txq_entry *txqent;
+ bna_txq_wi_ctrl_flag_t flags;
+
+ if (unlikely
+ (skb->len <= ETH_HLEN || skb->len > BFI_TX_MAX_DATA_PER_PKT)) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ /*
+ * Takes care of the Tx that is scheduled between clearing the flag
+ * and the netif_stop_queue() call.
+ */
+ if (unlikely(!test_bit(BNAD_RF_TX_STARTED, &bnad->run_flags))) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ tx_id = 0;
+
+ tx_info = &bnad->tx_info[tx_id];
+ tcb = tx_info->tcb[tx_id];
+ unmap_q = tcb->unmap_q;
+
+ vectors = 1 + skb_shinfo(skb)->nr_frags;
+ if (vectors > BFI_TX_MAX_VECTORS_PER_PKT) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+ wis = BNA_TXQ_WI_NEEDED(vectors); /* 4 vectors per work item */
+ acked = 0;
+ if (unlikely
+ (wis > BNA_QE_FREE_CNT(tcb, tcb->q_depth) ||
+ vectors > BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth))) {
+ if ((u16) (*tcb->hw_consumer_index) !=
+ tcb->consumer_index &&
+ !test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) {
+ acked = bnad_free_txbufs(bnad, tcb);
+ bna_ib_ack(tcb->i_dbell, acked);
+ smp_mb__before_clear_bit();
+ clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
+ } else {
+ netif_stop_queue(netdev);
+ BNAD_UPDATE_CTR(bnad, netif_queue_stop);
+ }
+
+ smp_mb();
+ /*
+ * Check again to deal with race condition between
+ * netif_stop_queue here, and netif_wake_queue in
+ * interrupt handler which is not inside netif tx lock.
+ */
+ if (likely
+ (wis > BNA_QE_FREE_CNT(tcb, tcb->q_depth) ||
+ vectors > BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth))) {
+ BNAD_UPDATE_CTR(bnad, netif_queue_stop);
+ return NETDEV_TX_BUSY;
+ } else {
+ netif_wake_queue(netdev);
+ BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
+ }
+ }
+
+ unmap_prod = unmap_q->producer_index;
+ wis_used = 1;
+ vect_id = 0;
+ flags = 0;
+
+ txq_prod = tcb->producer_index;
+ BNA_TXQ_QPGE_PTR_GET(txq_prod, tcb->sw_qpt, txqent, wi_range);
+ BUG_ON(!(wi_range <= tcb->q_depth));
+ txqent->hdr.wi.reserved = 0;
+ txqent->hdr.wi.num_vectors = vectors;
+ txqent->hdr.wi.opcode =
+ htons((skb_is_gso(skb) ? BNA_TXQ_WI_SEND_LSO :
+ BNA_TXQ_WI_SEND));
+
+ if (bnad->vlan_grp && vlan_tx_tag_present(skb)) {
+ vlan_tag = (u16) vlan_tx_tag_get(skb);
+ flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN);
+ }
+ if (test_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags)) {
+ vlan_tag =
+ (tcb->priority & 0x7) << 13 | (vlan_tag & 0x1fff);
+ flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN);
+ }
+
+ txqent->hdr.wi.vlan_tag = htons(vlan_tag);
+
+ if (skb_is_gso(skb)) {
+ err = bnad_tso_prepare(bnad, skb);
+ if (err) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+ txqent->hdr.wi.lso_mss = htons(skb_is_gso(skb));
+ flags |= (BNA_TXQ_WI_CF_IP_CKSUM | BNA_TXQ_WI_CF_TCP_CKSUM);
+ txqent->hdr.wi.l4_hdr_size_n_offset =
+ htons(BNA_TXQ_WI_L4_HDR_N_OFFSET
+ (tcp_hdrlen(skb) >> 2,
+ skb_transport_offset(skb)));
+ } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ u8 proto = 0;
+
+ txqent->hdr.wi.lso_mss = 0;
+
+ if (skb->protocol == htons(ETH_P_IP))
+ proto = ip_hdr(skb)->protocol;
+ else if (skb->protocol == htons(ETH_P_IPV6)) {
+ /* nexthdr may not be TCP immediately. */
+ proto = ipv6_hdr(skb)->nexthdr;
+ }
+ if (proto == IPPROTO_TCP) {
+ flags |= BNA_TXQ_WI_CF_TCP_CKSUM;
+ txqent->hdr.wi.l4_hdr_size_n_offset =
+ htons(BNA_TXQ_WI_L4_HDR_N_OFFSET
+ (0, skb_transport_offset(skb)));
+
+ BNAD_UPDATE_CTR(bnad, tcpcsum_offload);
+
+ BUG_ON(!(skb_headlen(skb) >=
+ skb_transport_offset(skb) + tcp_hdrlen(skb)));
+
+ } else if (proto == IPPROTO_UDP) {
+ flags |= BNA_TXQ_WI_CF_UDP_CKSUM;
+ txqent->hdr.wi.l4_hdr_size_n_offset =
+ htons(BNA_TXQ_WI_L4_HDR_N_OFFSET
+ (0, skb_transport_offset(skb)));
+
+ BNAD_UPDATE_CTR(bnad, udpcsum_offload);
+
+ BUG_ON(!(skb_headlen(skb) >=
+ skb_transport_offset(skb) +
+ sizeof(struct udphdr)));
+ } else {
+ err = skb_checksum_help(skb);
+ BNAD_UPDATE_CTR(bnad, csum_help);
+ if (err) {
+ dev_kfree_skb(skb);
+ BNAD_UPDATE_CTR(bnad, csum_help_err);
+ return NETDEV_TX_OK;
+ }
+ }
+ } else {
+ txqent->hdr.wi.lso_mss = 0;
+ txqent->hdr.wi.l4_hdr_size_n_offset = 0;
+ }
+
+ txqent->hdr.wi.flags = htons(flags);
+
+ txqent->hdr.wi.frame_length = htonl(skb->len);
+
+ unmap_q->unmap_array[unmap_prod].skb = skb;
+ BUG_ON(!(skb_headlen(skb) <= BFI_TX_MAX_DATA_PER_VECTOR));
+ txqent->vector[vect_id].length = htons(skb_headlen(skb));
+ dma_addr = pci_map_single(bnad->pcidev, skb->data, skb_headlen(skb),
+ PCI_DMA_TODEVICE);
+ pci_unmap_addr_set(&unmap_q->unmap_array[unmap_prod], dma_addr,
+ dma_addr);
+
+ BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr);
+ BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth);
+
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
+ u32 size = frag->size;
+
+ if (++vect_id == BFI_TX_MAX_VECTORS_PER_WI) {
+ vect_id = 0;
+ if (--wi_range)
+ txqent++;
+ else {
+ BNA_QE_INDX_ADD(txq_prod, wis_used,
+ tcb->q_depth);
+ wis_used = 0;
+ BNA_TXQ_QPGE_PTR_GET(txq_prod, tcb->sw_qpt,
+ txqent, wi_range);
+ BUG_ON(!(wi_range <= tcb->q_depth));
+ }
+ wis_used++;
+ txqent->hdr.wi_ext.opcode = htons(BNA_TXQ_WI_EXTENSION);
+ }
+
+ BUG_ON(!(size <= BFI_TX_MAX_DATA_PER_VECTOR));
+ txqent->vector[vect_id].length = htons(size);
+ dma_addr =
+ pci_map_page(bnad->pcidev, frag->page,
+ frag->page_offset, size,
+ PCI_DMA_TODEVICE);
+ pci_unmap_addr_set(&unmap_q->unmap_array[unmap_prod], dma_addr,
+ dma_addr);
+ BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr);
+ BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth);
+ }
+
+ unmap_q->producer_index = unmap_prod;
+ BNA_QE_INDX_ADD(txq_prod, wis_used, tcb->q_depth);
+ tcb->producer_index = txq_prod;
+
+ smp_mb();
+ bna_txq_prod_indx_doorbell(tcb);
+
+ if ((u16) (*tcb->hw_consumer_index) != tcb->consumer_index)
+ tasklet_schedule(&bnad->tx_free_tasklet);
+
+ return NETDEV_TX_OK;
+}
+
+/*
+ * Used spin_lock to synchronize reading of stats structures, which
+ * is written by BNA under the same lock.
+ */
+static struct net_device_stats *
+bnad_get_netdev_stats(struct net_device *netdev)
+{
+ struct bnad *bnad = netdev_priv(netdev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+
+ memset(&bnad->net_stats, 0, sizeof(struct net_device_stats));
+
+ bnad_netdev_qstats_fill(bnad);
+ bnad_netdev_hwstats_fill(bnad);
+
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ return &bnad->net_stats;
+}
+
+static void
+bnad_set_rx_mode(struct net_device *netdev)
+{
+ struct bnad *bnad = netdev_priv(netdev);
+ u32 new_mask, valid_mask;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+
+ new_mask = valid_mask = 0;
+
+ if (netdev->flags & IFF_PROMISC) {
+ if (!(bnad->cfg_flags & BNAD_CF_PROMISC)) {
+ new_mask = BNAD_RXMODE_PROMISC_DEFAULT;
+ valid_mask = BNAD_RXMODE_PROMISC_DEFAULT;
+ bnad->cfg_flags |= BNAD_CF_PROMISC;
+ }
+ } else {
+ if (bnad->cfg_flags & BNAD_CF_PROMISC) {
+ new_mask = ~BNAD_RXMODE_PROMISC_DEFAULT;
+ valid_mask = BNAD_RXMODE_PROMISC_DEFAULT;
+ bnad->cfg_flags &= ~BNAD_CF_PROMISC;
+ }
+ }
+
+ if (netdev->flags & IFF_ALLMULTI) {
+ if (!(bnad->cfg_flags & BNAD_CF_ALLMULTI)) {
+ new_mask |= BNA_RXMODE_ALLMULTI;
+ valid_mask |= BNA_RXMODE_ALLMULTI;
+ bnad->cfg_flags |= BNAD_CF_ALLMULTI;
+ }
+ } else {
+ if (bnad->cfg_flags & BNAD_CF_ALLMULTI) {
+ new_mask &= ~BNA_RXMODE_ALLMULTI;
+ valid_mask |= BNA_RXMODE_ALLMULTI;
+ bnad->cfg_flags &= ~BNAD_CF_ALLMULTI;
+ }
+ }
+
+ bna_rx_mode_set(bnad->rx_info[0].rx, new_mask, valid_mask, NULL);
+
+ if (!netdev_mc_empty(netdev)) {
+ u8 *mcaddr_list;
+ int mc_count = netdev_mc_count(netdev);
+
+ /* Index 0 holds the broadcast address */
+ mcaddr_list =
+ kzalloc((mc_count + 1) * ETH_ALEN,
+ GFP_ATOMIC);
+ if (!mcaddr_list)
+ return;
+
+ memcpy(&mcaddr_list[0], &bnad_bcast_addr[0], ETH_ALEN);
+
+ /* Copy rest of the MC addresses */
+ bnad_netdev_mc_list_get(netdev, mcaddr_list);
+
+ bna_rx_mcast_listset(bnad->rx_info[0].rx, mc_count + 1,
+ mcaddr_list, NULL);
+
+ /* Should we enable BNAD_CF_ALLMULTI for err != 0 ? */
+ kfree(mcaddr_list);
+ }
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+}
+
+/*
+ * bna_lock is used to sync writes to netdev->addr
+ * conf_lock cannot be used since this call may be made
+ * in a non-blocking context.
+ */
+static int
+bnad_set_mac_address(struct net_device *netdev, void *mac_addr)
+{
+ int err;
+ struct bnad *bnad = netdev_priv(netdev);
+ struct sockaddr *sa = (struct sockaddr *)mac_addr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+
+ err = bnad_mac_addr_set_locked(bnad, sa->sa_data);
+
+ if (!err)
+ memcpy(netdev->dev_addr, sa->sa_data, netdev->addr_len);
+
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ return err;
+}
+
+static int
+bnad_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ int mtu, err = 0;
+ unsigned long flags;
+
+ struct bnad *bnad = netdev_priv(netdev);
+
+ if (new_mtu + ETH_HLEN < ETH_ZLEN || new_mtu > BNAD_JUMBO_MTU)
+ return -EINVAL;
+
+ mutex_lock(&bnad->conf_mutex);
+
+ netdev->mtu = new_mtu;
+
+ mtu = ETH_HLEN + new_mtu + ETH_FCS_LEN;
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_port_mtu_set(&bnad->bna.port, mtu, NULL);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ mutex_unlock(&bnad->conf_mutex);
+ return err;
+}
+
+static void
+bnad_vlan_rx_register(struct net_device *netdev,
+ struct vlan_group *vlan_grp)
+{
+ struct bnad *bnad = netdev_priv(netdev);
+
+ mutex_lock(&bnad->conf_mutex);
+ bnad->vlan_grp = vlan_grp;
+ mutex_unlock(&bnad->conf_mutex);
+}
+
+static void
+bnad_vlan_rx_add_vid(struct net_device *netdev,
+ unsigned short vid)
+{
+ struct bnad *bnad = netdev_priv(netdev);
+ unsigned long flags;
+
+ if (!bnad->rx_info[0].rx)
+ return;
+
+ mutex_lock(&bnad->conf_mutex);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_rx_vlan_add(bnad->rx_info[0].rx, vid);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ mutex_unlock(&bnad->conf_mutex);
+}
+
+static void
+bnad_vlan_rx_kill_vid(struct net_device *netdev,
+ unsigned short vid)
+{
+ struct bnad *bnad = netdev_priv(netdev);
+ unsigned long flags;
+
+ if (!bnad->rx_info[0].rx)
+ return;
+
+ mutex_lock(&bnad->conf_mutex);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_rx_vlan_del(bnad->rx_info[0].rx, vid);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ mutex_unlock(&bnad->conf_mutex);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void
+bnad_netpoll(struct net_device *netdev)
+{
+ struct bnad *bnad = netdev_priv(netdev);
+ struct bnad_rx_info *rx_info;
+ struct bnad_rx_ctrl *rx_ctrl;
+ u32 curr_mask;
+ int i, j;
+
+ if (!(bnad->cfg_flags & BNAD_CF_MSIX)) {
+ bna_intx_disable(&bnad->bna, curr_mask);
+ bnad_isr(bnad->pcidev->irq, netdev);
+ bna_intx_enable(&bnad->bna, curr_mask);
+ } else {
+ for (i = 0; i < bnad->num_rx; i++) {
+ rx_info = &bnad->rx_info[i];
+ if (!rx_info->rx)
+ continue;
+ for (j = 0; j < bnad->num_rxp_per_rx; j++) {
+ rx_ctrl = &rx_info->rx_ctrl[j];
+ if (rx_ctrl->ccb) {
+ bnad_disable_rx_irq(bnad,
+ rx_ctrl->ccb);
+ bnad_netif_rx_schedule_poll(bnad,
+ rx_ctrl->ccb);
+ }
+ }
+ }
+ }
+}
+#endif
+
+static const struct net_device_ops bnad_netdev_ops = {
+ .ndo_open = bnad_open,
+ .ndo_stop = bnad_stop,
+ .ndo_start_xmit = bnad_start_xmit,
+ .ndo_get_stats = bnad_get_netdev_stats,
+ .ndo_set_rx_mode = bnad_set_rx_mode,
+ .ndo_set_multicast_list = bnad_set_rx_mode,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = bnad_set_mac_address,
+ .ndo_change_mtu = bnad_change_mtu,
+ .ndo_vlan_rx_register = bnad_vlan_rx_register,
+ .ndo_vlan_rx_add_vid = bnad_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = bnad_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = bnad_netpoll
+#endif
+};
+
+static void
+bnad_netdev_init(struct bnad *bnad, bool using_dac)
+{
+ struct net_device *netdev = bnad->netdev;
+
+ netdev->features |= NETIF_F_IPV6_CSUM;
+ netdev->features |= NETIF_F_TSO;
+ netdev->features |= NETIF_F_TSO6;
+
+ netdev->features |= NETIF_F_GRO;
+ pr_warn("bna: GRO enabled, using kernel stack GRO\n");
+
+ netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
+
+ if (using_dac)
+ netdev->features |= NETIF_F_HIGHDMA;
+
+ netdev->features |=
+ NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
+ NETIF_F_HW_VLAN_FILTER;
+
+ netdev->vlan_features = netdev->features;
+ netdev->mem_start = bnad->mmio_start;
+ netdev->mem_end = bnad->mmio_start + bnad->mmio_len - 1;
+
+ netdev->netdev_ops = &bnad_netdev_ops;
+ bnad_set_ethtool_ops(netdev);
+}
+
+/*
+ * 1. Initialize the bnad structure
+ * 2. Setup netdev pointer in pci_dev
+ * 3. Initialze Tx free tasklet
+ * 4. Initialize no. of TxQ & CQs & MSIX vectors
+ */
+static int
+bnad_init(struct bnad *bnad,
+ struct pci_dev *pdev, struct net_device *netdev)
+{
+ unsigned long flags;
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+ pci_set_drvdata(pdev, netdev);
+
+ bnad->netdev = netdev;
+ bnad->pcidev = pdev;
+ bnad->mmio_start = pci_resource_start(pdev, 0);
+ bnad->mmio_len = pci_resource_len(pdev, 0);
+ bnad->bar0 = ioremap_nocache(bnad->mmio_start, bnad->mmio_len);
+ if (!bnad->bar0) {
+ dev_err(&pdev->dev, "ioremap for bar0 failed\n");
+ pci_set_drvdata(pdev, NULL);
+ return -ENOMEM;
+ }
+ pr_info("bar0 mapped to %p, len %llu\n", bnad->bar0,
+ (unsigned long long) bnad->mmio_len);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ if (!bnad_msix_disable)
+ bnad->cfg_flags = BNAD_CF_MSIX;
+
+ bnad->cfg_flags |= BNAD_CF_DIM_ENABLED;
+
+ bnad_q_num_init(bnad);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ bnad->msix_num = (bnad->num_tx * bnad->num_txq_per_tx) +
+ (bnad->num_rx * bnad->num_rxp_per_rx) +
+ BNAD_MAILBOX_MSIX_VECTORS;
+ bnad->msix_diag_num = 2; /* 1 for Tx, 1 for Rx */
+
+ bnad->txq_depth = BNAD_TXQ_DEPTH;
+ bnad->rxq_depth = BNAD_RXQ_DEPTH;
+ bnad->rx_csum = true;
+
+ bnad->tx_coalescing_timeo = BFI_TX_COALESCING_TIMEO;
+ bnad->rx_coalescing_timeo = BFI_RX_COALESCING_TIMEO;
+
+ tasklet_init(&bnad->tx_free_tasklet, bnad_tx_free_tasklet,
+ (unsigned long)bnad);
+
+ return 0;
+}
+
+/*
+ * Must be called after bnad_pci_uninit()
+ * so that iounmap() and pci_set_drvdata(NULL)
+ * happens only after PCI uninitialization.
+ */
+static void
+bnad_uninit(struct bnad *bnad)
+{
+ if (bnad->bar0)
+ iounmap(bnad->bar0);
+ pci_set_drvdata(bnad->pcidev, NULL);
+}
+
+/*
+ * Initialize locks
+ a) Per device mutes used for serializing configuration
+ changes from OS interface
+ b) spin lock used to protect bna state machine
+ */
+static void
+bnad_lock_init(struct bnad *bnad)
+{
+ spin_lock_init(&bnad->bna_lock);
+ mutex_init(&bnad->conf_mutex);
+}
+
+static void
+bnad_lock_uninit(struct bnad *bnad)
+{
+ mutex_destroy(&bnad->conf_mutex);
+}
+
+/* PCI Initialization */
+static int
+bnad_pci_init(struct bnad *bnad,
+ struct pci_dev *pdev, bool *using_dac)
+{
+ int err;
+
+ err = pci_enable_device(pdev);
+ if (err)
+ return err;
+ err = pci_request_regions(pdev, BNAD_NAME);
+ if (err)
+ goto disable_device;
+ if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
+ !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
+ *using_dac = 1;
+ } else {
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (err) {
+ err = pci_set_consistent_dma_mask(pdev,
+ DMA_BIT_MASK(32));
+ if (err)
+ goto release_regions;
+ }
+ *using_dac = 0;
+ }
+ pci_set_master(pdev);
+ return 0;
+
+release_regions:
+ pci_release_regions(pdev);
+disable_device:
+ pci_disable_device(pdev);
+
+ return err;
+}
+
+static void
+bnad_pci_uninit(struct pci_dev *pdev)
+{
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+}
+
+static int __devinit
+bnad_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *pcidev_id)
+{
+ bool using_dac;
+ int err;
+ struct bnad *bnad;
+ struct bna *bna;
+ struct net_device *netdev;
+ struct bfa_pcidev pcidev_info;
+ unsigned long flags;
+
+ pr_info("bnad_pci_probe : (0x%p, 0x%p) PCI Func : (%d)\n",
+ pdev, pcidev_id, PCI_FUNC(pdev->devfn));
+
+ mutex_lock(&bnad_fwimg_mutex);
+ if (!cna_get_firmware_buf(pdev)) {
+ mutex_unlock(&bnad_fwimg_mutex);
+ pr_warn("Failed to load Firmware Image!\n");
+ return -ENODEV;
+ }
+ mutex_unlock(&bnad_fwimg_mutex);
+
+ /*
+ * Allocates sizeof(struct net_device + struct bnad)
+ * bnad = netdev->priv
+ */
+ netdev = alloc_etherdev(sizeof(struct bnad));
+ if (!netdev) {
+ dev_err(&pdev->dev, "alloc_etherdev failed\n");
+ err = -ENOMEM;
+ return err;
+ }
+ bnad = netdev_priv(netdev);
+
+
+ /*
+ * PCI initialization
+ * Output : using_dac = 1 for 64 bit DMA
+ * = 0 for 32 bit DMA
+ */
+ err = bnad_pci_init(bnad, pdev, &using_dac);
+ if (err)
+ goto free_netdev;
+
+ bnad_lock_init(bnad);
+ /*
+ * Initialize bnad structure
+ * Setup relation between pci_dev & netdev
+ * Init Tx free tasklet
+ */
+ err = bnad_init(bnad, pdev, netdev);
+ if (err)
+ goto pci_uninit;
+ /* Initialize netdev structure, set up ethtool ops */
+ bnad_netdev_init(bnad, using_dac);
+
+ bnad_enable_msix(bnad);
+
+ /* Get resource requirement form bna */
+ bna_res_req(&bnad->res_info[0]);
+
+ /* Allocate resources from bna */
+ err = bnad_res_alloc(bnad);
+ if (err)
+ goto free_netdev;
+
+ bna = &bnad->bna;
+
+ /* Setup pcidev_info for bna_init() */
+ pcidev_info.pci_slot = PCI_SLOT(bnad->pcidev->devfn);
+ pcidev_info.pci_func = PCI_FUNC(bnad->pcidev->devfn);
+ pcidev_info.device_id = bnad->pcidev->device;
+ pcidev_info.pci_bar_kva = bnad->bar0;
+
+ mutex_lock(&bnad->conf_mutex);
+
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_init(bna, bnad, &pcidev_info, &bnad->res_info[0]);
+
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ bnad->stats.bna_stats = &bna->stats;
+
+ /* Set up timers */
+ setup_timer(&bnad->bna.device.ioc.ioc_timer, bnad_ioc_timeout,
+ ((unsigned long)bnad));
+ setup_timer(&bnad->bna.device.ioc.hb_timer, bnad_ioc_hb_check,
+ ((unsigned long)bnad));
+ setup_timer(&bnad->bna.device.ioc.sem_timer, bnad_ioc_sem_timeout,
+ ((unsigned long)bnad));
+
+ /* Now start the timer before calling IOC */
+ mod_timer(&bnad->bna.device.ioc.ioc_timer,
+ jiffies + msecs_to_jiffies(BNA_IOC_TIMER_FREQ));
+
+ /*
+ * Start the chip
+ * Don't care even if err != 0, bna state machine will
+ * deal with it
+ */
+ err = bnad_device_enable(bnad);
+
+ /* Get the burnt-in mac */
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_port_mac_get(&bna->port, &bnad->perm_addr);
+ bnad_set_netdev_perm_addr(bnad);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+ mutex_unlock(&bnad->conf_mutex);
+
+ /*
+ * Make sure the link appears down to the stack
+ */
+ netif_carrier_off(netdev);
+
+ /* Finally, reguister with net_device layer */
+ err = register_netdev(netdev);
+ if (err) {
+ pr_err("BNA : Registering with netdev failed\n");
+ goto disable_device;
+ }
+
+ return 0;
+
+disable_device:
+ mutex_lock(&bnad->conf_mutex);
+ bnad_device_disable(bnad);
+ del_timer_sync(&bnad->bna.device.ioc.ioc_timer);
+ del_timer_sync(&bnad->bna.device.ioc.sem_timer);
+ del_timer_sync(&bnad->bna.device.ioc.hb_timer);
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_uninit(bna);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ mutex_unlock(&bnad->conf_mutex);
+
+ bnad_res_free(bnad);
+ bnad_disable_msix(bnad);
+pci_uninit:
+ bnad_pci_uninit(pdev);
+ bnad_lock_uninit(bnad);
+ bnad_uninit(bnad);
+free_netdev:
+ free_netdev(netdev);
+ return err;
+}
+
+static void __devexit
+bnad_pci_remove(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct bnad *bnad;
+ struct bna *bna;
+ unsigned long flags;
+
+ if (!netdev)
+ return;
+
+ pr_info("%s bnad_pci_remove\n", netdev->name);
+ bnad = netdev_priv(netdev);
+ bna = &bnad->bna;
+
+ unregister_netdev(netdev);
+
+ mutex_lock(&bnad->conf_mutex);
+ bnad_device_disable(bnad);
+ del_timer_sync(&bnad->bna.device.ioc.ioc_timer);
+ del_timer_sync(&bnad->bna.device.ioc.sem_timer);
+ del_timer_sync(&bnad->bna.device.ioc.hb_timer);
+ spin_lock_irqsave(&bnad->bna_lock, flags);
+ bna_uninit(bna);
+ spin_unlock_irqrestore(&bnad->bna_lock, flags);
+ mutex_unlock(&bnad->conf_mutex);
+
+ bnad_res_free(bnad);
+ bnad_disable_msix(bnad);
+ bnad_pci_uninit(pdev);
+ bnad_lock_uninit(bnad);
+ bnad_uninit(bnad);
+ free_netdev(netdev);
+}
+
+const struct pci_device_id bnad_pci_id_table[] = {
+ {
+ PCI_DEVICE(PCI_VENDOR_ID_BROCADE,
+ PCI_DEVICE_ID_BROCADE_CT),
+ .class = PCI_CLASS_NETWORK_ETHERNET << 8,
+ .class_mask = 0xffff00
+ }, {0, }
+};
+
+MODULE_DEVICE_TABLE(pci, bnad_pci_id_table);
+
+static struct pci_driver bnad_pci_driver = {
+ .name = BNAD_NAME,
+ .id_table = bnad_pci_id_table,
+ .probe = bnad_pci_probe,
+ .remove = __devexit_p(bnad_pci_remove),
+};
+
+static int __init
+bnad_module_init(void)
+{
+ int err;
+
+ pr_info("Brocade 10G Ethernet driver\n");
+
+ bfa_ioc_auto_recover(bnad_ioc_auto_recover);
+
+ err = pci_register_driver(&bnad_pci_driver);
+ if (err < 0) {
+ pr_err("bna : PCI registration failed in module init "
+ "(%d)\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+static void __exit
+bnad_module_exit(void)
+{
+ pci_unregister_driver(&bnad_pci_driver);
+
+ if (bfi_fw)
+ release_firmware(bfi_fw);
+}
+
+module_init(bnad_module_init);
+module_exit(bnad_module_exit);
+
+MODULE_AUTHOR("Brocade");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Brocade 10G PCIe Ethernet driver");
+MODULE_VERSION(BNAD_VERSION);
+MODULE_FIRMWARE(CNA_FW_FILE_CT);