diff options
Diffstat (limited to 'drivers/net/ethernet/brocade/bna/bnad.c')
| -rw-r--r-- | drivers/net/ethernet/brocade/bna/bnad.c | 3884 |
1 files changed, 3884 insertions, 0 deletions
diff --git a/drivers/net/ethernet/brocade/bna/bnad.c b/drivers/net/ethernet/brocade/bna/bnad.c new file mode 100644 index 000000000..1e25c3b5f --- /dev/null +++ b/drivers/net/ethernet/brocade/bna/bnad.c @@ -0,0 +1,3884 @@ +/* + * Linux network driver for QLogic BR-series 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) 2005-2014 Brocade Communications Systems, Inc. + * Copyright (c) 2014-2015 QLogic Corporation + * All rights reserved + * www.qlogic.com + */ +#include <linux/bitops.h> +#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 <linux/prefetch.h> +#include <linux/module.h> + +#include "bnad.h" +#include "bna.h" +#include "cna.h" + +static 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"); + +static uint bna_debugfs_enable = 1; +module_param(bna_debugfs_enable, uint, 0644); +MODULE_PARM_DESC(bna_debugfs_enable, "Enables debugfs feature, default=1," + " Range[false:0|true:1]"); + +/* + * Global variables + */ +static u32 bnad_rxqs_per_cq = 2; +static atomic_t bna_id; +static const u8 bnad_bcast_addr[] __aligned(2) = + { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; + +/* + * Local MACROS + */ +#define BNAD_GET_MBOX_IRQ(_bnad) \ + (((_bnad)->cfg_flags & BNAD_CF_MSIX) ? \ + ((_bnad)->msix_table[BNAD_MAILBOX_MSIX_INDEX].vector) : \ + ((_bnad)->pcidev->irq)) + +#define BNAD_FILL_UNMAPQ_MEM_REQ(_res_info, _num, _size) \ +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 = (_size); \ +} while (0) + +/* + * Reinitialize completions in CQ, once Rx is taken down + */ +static void +bnad_cq_cleanup(struct bnad *bnad, struct bna_ccb *ccb) +{ + struct bna_cq_entry *cmpl; + int i; + + for (i = 0; i < ccb->q_depth; i++) { + cmpl = &((struct bna_cq_entry *)ccb->sw_q)[i]; + cmpl->valid = 0; + } +} + +/* Tx Datapath functions */ + + +/* Caller should ensure that the entry at unmap_q[index] is valid */ +static u32 +bnad_tx_buff_unmap(struct bnad *bnad, + struct bnad_tx_unmap *unmap_q, + u32 q_depth, u32 index) +{ + struct bnad_tx_unmap *unmap; + struct sk_buff *skb; + int vector, nvecs; + + unmap = &unmap_q[index]; + nvecs = unmap->nvecs; + + skb = unmap->skb; + unmap->skb = NULL; + unmap->nvecs = 0; + dma_unmap_single(&bnad->pcidev->dev, + dma_unmap_addr(&unmap->vectors[0], dma_addr), + skb_headlen(skb), DMA_TO_DEVICE); + dma_unmap_addr_set(&unmap->vectors[0], dma_addr, 0); + nvecs--; + + vector = 0; + while (nvecs) { + vector++; + if (vector == BFI_TX_MAX_VECTORS_PER_WI) { + vector = 0; + BNA_QE_INDX_INC(index, q_depth); + unmap = &unmap_q[index]; + } + + dma_unmap_page(&bnad->pcidev->dev, + dma_unmap_addr(&unmap->vectors[vector], dma_addr), + dma_unmap_len(&unmap->vectors[vector], dma_len), + DMA_TO_DEVICE); + dma_unmap_addr_set(&unmap->vectors[vector], dma_addr, 0); + nvecs--; + } + + BNA_QE_INDX_INC(index, q_depth); + + return index; +} + +/* + * Frees all pending Tx Bufs + * At this point no activity is expected on the Q, + * so DMA unmap & freeing is fine. + */ +static void +bnad_txq_cleanup(struct bnad *bnad, struct bna_tcb *tcb) +{ + struct bnad_tx_unmap *unmap_q = tcb->unmap_q; + struct sk_buff *skb; + int i; + + for (i = 0; i < tcb->q_depth; i++) { + skb = unmap_q[i].skb; + if (!skb) + continue; + bnad_tx_buff_unmap(bnad, unmap_q, tcb->q_depth, i); + + dev_kfree_skb_any(skb); + } +} + +/* + * bnad_txcmpl_process : Frees the Tx bufs on Tx completion + * Can be called in a) Interrupt context + * b) Sending context + */ +static u32 +bnad_txcmpl_process(struct bnad *bnad, struct bna_tcb *tcb) +{ + u32 sent_packets = 0, sent_bytes = 0; + u32 wis, unmap_wis, hw_cons, cons, q_depth; + struct bnad_tx_unmap *unmap_q = tcb->unmap_q; + struct bnad_tx_unmap *unmap; + struct sk_buff *skb; + + /* Just return if TX is stopped */ + if (!test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) + return 0; + + hw_cons = *(tcb->hw_consumer_index); + rmb(); + cons = tcb->consumer_index; + q_depth = tcb->q_depth; + + wis = BNA_Q_INDEX_CHANGE(cons, hw_cons, q_depth); + BUG_ON(!(wis <= BNA_QE_IN_USE_CNT(tcb, tcb->q_depth))); + + while (wis) { + unmap = &unmap_q[cons]; + + skb = unmap->skb; + + sent_packets++; + sent_bytes += skb->len; + + unmap_wis = BNA_TXQ_WI_NEEDED(unmap->nvecs); + wis -= unmap_wis; + + cons = bnad_tx_buff_unmap(bnad, unmap_q, q_depth, cons); + dev_kfree_skb_any(skb); + } + + /* Update consumer pointers. */ + tcb->consumer_index = hw_cons; + + tcb->txq->tx_packets += sent_packets; + tcb->txq->tx_bytes += sent_bytes; + + return sent_packets; +} + +static u32 +bnad_tx_complete(struct bnad *bnad, struct bna_tcb *tcb) +{ + struct net_device *netdev = bnad->netdev; + u32 sent = 0; + + if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) + return 0; + + sent = bnad_txcmpl_process(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) { + if (test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) { + netif_wake_queue(netdev); + BNAD_UPDATE_CTR(bnad, netif_queue_wakeup); + } + } + } + + if (likely(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) + bna_ib_ack(tcb->i_dbell, sent); + + smp_mb__before_atomic(); + 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_complete(bnad, tcb); + + return IRQ_HANDLED; +} + +static inline void +bnad_rxq_alloc_uninit(struct bnad *bnad, struct bna_rcb *rcb) +{ + struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; + + unmap_q->reuse_pi = -1; + unmap_q->alloc_order = -1; + unmap_q->map_size = 0; + unmap_q->type = BNAD_RXBUF_NONE; +} + +/* Default is page-based allocation. Multi-buffer support - TBD */ +static int +bnad_rxq_alloc_init(struct bnad *bnad, struct bna_rcb *rcb) +{ + struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; + int order; + + bnad_rxq_alloc_uninit(bnad, rcb); + + order = get_order(rcb->rxq->buffer_size); + + unmap_q->type = BNAD_RXBUF_PAGE; + + if (bna_is_small_rxq(rcb->id)) { + unmap_q->alloc_order = 0; + unmap_q->map_size = rcb->rxq->buffer_size; + } else { + if (rcb->rxq->multi_buffer) { + unmap_q->alloc_order = 0; + unmap_q->map_size = rcb->rxq->buffer_size; + unmap_q->type = BNAD_RXBUF_MULTI_BUFF; + } else { + unmap_q->alloc_order = order; + unmap_q->map_size = + (rcb->rxq->buffer_size > 2048) ? + PAGE_SIZE << order : 2048; + } + } + + BUG_ON((PAGE_SIZE << order) % unmap_q->map_size); + + return 0; +} + +static inline void +bnad_rxq_cleanup_page(struct bnad *bnad, struct bnad_rx_unmap *unmap) +{ + if (!unmap->page) + return; + + dma_unmap_page(&bnad->pcidev->dev, + dma_unmap_addr(&unmap->vector, dma_addr), + unmap->vector.len, DMA_FROM_DEVICE); + put_page(unmap->page); + unmap->page = NULL; + dma_unmap_addr_set(&unmap->vector, dma_addr, 0); + unmap->vector.len = 0; +} + +static inline void +bnad_rxq_cleanup_skb(struct bnad *bnad, struct bnad_rx_unmap *unmap) +{ + if (!unmap->skb) + return; + + dma_unmap_single(&bnad->pcidev->dev, + dma_unmap_addr(&unmap->vector, dma_addr), + unmap->vector.len, DMA_FROM_DEVICE); + dev_kfree_skb_any(unmap->skb); + unmap->skb = NULL; + dma_unmap_addr_set(&unmap->vector, dma_addr, 0); + unmap->vector.len = 0; +} + +static void +bnad_rxq_cleanup(struct bnad *bnad, struct bna_rcb *rcb) +{ + struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; + int i; + + for (i = 0; i < rcb->q_depth; i++) { + struct bnad_rx_unmap *unmap = &unmap_q->unmap[i]; + + if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) + bnad_rxq_cleanup_skb(bnad, unmap); + else + bnad_rxq_cleanup_page(bnad, unmap); + } + bnad_rxq_alloc_uninit(bnad, rcb); +} + +static u32 +bnad_rxq_refill_page(struct bnad *bnad, struct bna_rcb *rcb, u32 nalloc) +{ + u32 alloced, prod, q_depth; + struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; + struct bnad_rx_unmap *unmap, *prev; + struct bna_rxq_entry *rxent; + struct page *page; + u32 page_offset, alloc_size; + dma_addr_t dma_addr; + + prod = rcb->producer_index; + q_depth = rcb->q_depth; + + alloc_size = PAGE_SIZE << unmap_q->alloc_order; + alloced = 0; + + while (nalloc--) { + unmap = &unmap_q->unmap[prod]; + + if (unmap_q->reuse_pi < 0) { + page = alloc_pages(GFP_ATOMIC | __GFP_COMP, + unmap_q->alloc_order); + page_offset = 0; + } else { + prev = &unmap_q->unmap[unmap_q->reuse_pi]; + page = prev->page; + page_offset = prev->page_offset + unmap_q->map_size; + get_page(page); + } + + if (unlikely(!page)) { + BNAD_UPDATE_CTR(bnad, rxbuf_alloc_failed); + rcb->rxq->rxbuf_alloc_failed++; + goto finishing; + } + + dma_addr = dma_map_page(&bnad->pcidev->dev, page, page_offset, + unmap_q->map_size, DMA_FROM_DEVICE); + if (dma_mapping_error(&bnad->pcidev->dev, dma_addr)) { + put_page(page); + BNAD_UPDATE_CTR(bnad, rxbuf_map_failed); + rcb->rxq->rxbuf_map_failed++; + goto finishing; + } + + unmap->page = page; + unmap->page_offset = page_offset; + dma_unmap_addr_set(&unmap->vector, dma_addr, dma_addr); + unmap->vector.len = unmap_q->map_size; + page_offset += unmap_q->map_size; + + if (page_offset < alloc_size) + unmap_q->reuse_pi = prod; + else + unmap_q->reuse_pi = -1; + + rxent = &((struct bna_rxq_entry *)rcb->sw_q)[prod]; + BNA_SET_DMA_ADDR(dma_addr, &rxent->host_addr); + BNA_QE_INDX_INC(prod, q_depth); + alloced++; + } + +finishing: + if (likely(alloced)) { + rcb->producer_index = prod; + smp_mb(); + if (likely(test_bit(BNAD_RXQ_POST_OK, &rcb->flags))) + bna_rxq_prod_indx_doorbell(rcb); + } + + return alloced; +} + +static u32 +bnad_rxq_refill_skb(struct bnad *bnad, struct bna_rcb *rcb, u32 nalloc) +{ + u32 alloced, prod, q_depth, buff_sz; + struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; + struct bnad_rx_unmap *unmap; + struct bna_rxq_entry *rxent; + struct sk_buff *skb; + dma_addr_t dma_addr; + + buff_sz = rcb->rxq->buffer_size; + prod = rcb->producer_index; + q_depth = rcb->q_depth; + + alloced = 0; + while (nalloc--) { + unmap = &unmap_q->unmap[prod]; + + skb = netdev_alloc_skb_ip_align(bnad->netdev, buff_sz); + + if (unlikely(!skb)) { + BNAD_UPDATE_CTR(bnad, rxbuf_alloc_failed); + rcb->rxq->rxbuf_alloc_failed++; + goto finishing; + } + + dma_addr = dma_map_single(&bnad->pcidev->dev, skb->data, + buff_sz, DMA_FROM_DEVICE); + if (dma_mapping_error(&bnad->pcidev->dev, dma_addr)) { + dev_kfree_skb_any(skb); + BNAD_UPDATE_CTR(bnad, rxbuf_map_failed); + rcb->rxq->rxbuf_map_failed++; + goto finishing; + } + + unmap->skb = skb; + dma_unmap_addr_set(&unmap->vector, dma_addr, dma_addr); + unmap->vector.len = buff_sz; + + rxent = &((struct bna_rxq_entry *)rcb->sw_q)[prod]; + BNA_SET_DMA_ADDR(dma_addr, &rxent->host_addr); + BNA_QE_INDX_INC(prod, q_depth); + alloced++; + } + +finishing: + if (likely(alloced)) { + rcb->producer_index = prod; + smp_mb(); + if (likely(test_bit(BNAD_RXQ_POST_OK, &rcb->flags))) + bna_rxq_prod_indx_doorbell(rcb); + } + + return alloced; +} + +static inline void +bnad_rxq_post(struct bnad *bnad, struct bna_rcb *rcb) +{ + struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; + u32 to_alloc; + + to_alloc = BNA_QE_FREE_CNT(rcb, rcb->q_depth); + if (!(to_alloc >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT)) + return; + + if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) + bnad_rxq_refill_skb(bnad, rcb, to_alloc); + else + bnad_rxq_refill_page(bnad, rcb, to_alloc); +} + +#define flags_cksum_prot_mask (BNA_CQ_EF_IPV4 | BNA_CQ_EF_L3_CKSUM_OK | \ + BNA_CQ_EF_IPV6 | \ + BNA_CQ_EF_TCP | BNA_CQ_EF_UDP | \ + BNA_CQ_EF_L4_CKSUM_OK) + +#define flags_tcp4 (BNA_CQ_EF_IPV4 | BNA_CQ_EF_L3_CKSUM_OK | \ + BNA_CQ_EF_TCP | BNA_CQ_EF_L4_CKSUM_OK) +#define flags_tcp6 (BNA_CQ_EF_IPV6 | \ + BNA_CQ_EF_TCP | BNA_CQ_EF_L4_CKSUM_OK) +#define flags_udp4 (BNA_CQ_EF_IPV4 | BNA_CQ_EF_L3_CKSUM_OK | \ + BNA_CQ_EF_UDP | BNA_CQ_EF_L4_CKSUM_OK) +#define flags_udp6 (BNA_CQ_EF_IPV6 | \ + BNA_CQ_EF_UDP | BNA_CQ_EF_L4_CKSUM_OK) + +static void +bnad_cq_drop_packet(struct bnad *bnad, struct bna_rcb *rcb, + u32 sop_ci, u32 nvecs) +{ + struct bnad_rx_unmap_q *unmap_q; + struct bnad_rx_unmap *unmap; + u32 ci, vec; + + unmap_q = rcb->unmap_q; + for (vec = 0, ci = sop_ci; vec < nvecs; vec++) { + unmap = &unmap_q->unmap[ci]; + BNA_QE_INDX_INC(ci, rcb->q_depth); + + if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) + bnad_rxq_cleanup_skb(bnad, unmap); + else + bnad_rxq_cleanup_page(bnad, unmap); + } +} + +static void +bnad_cq_setup_skb_frags(struct bna_ccb *ccb, struct sk_buff *skb, u32 nvecs) +{ + struct bna_rcb *rcb; + struct bnad *bnad; + struct bnad_rx_unmap_q *unmap_q; + struct bna_cq_entry *cq, *cmpl; + u32 ci, pi, totlen = 0; + + cq = ccb->sw_q; + pi = ccb->producer_index; + cmpl = &cq[pi]; + + rcb = bna_is_small_rxq(cmpl->rxq_id) ? ccb->rcb[1] : ccb->rcb[0]; + unmap_q = rcb->unmap_q; + bnad = rcb->bnad; + ci = rcb->consumer_index; + + /* prefetch header */ + prefetch(page_address(unmap_q->unmap[ci].page) + + unmap_q->unmap[ci].page_offset); + + while (nvecs--) { + struct bnad_rx_unmap *unmap; + u32 len; + + unmap = &unmap_q->unmap[ci]; + BNA_QE_INDX_INC(ci, rcb->q_depth); + + dma_unmap_page(&bnad->pcidev->dev, + dma_unmap_addr(&unmap->vector, dma_addr), + unmap->vector.len, DMA_FROM_DEVICE); + + len = ntohs(cmpl->length); + skb->truesize += unmap->vector.len; + totlen += len; + + skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, + unmap->page, unmap->page_offset, len); + + unmap->page = NULL; + unmap->vector.len = 0; + + BNA_QE_INDX_INC(pi, ccb->q_depth); + cmpl = &cq[pi]; + } + + skb->len += totlen; + skb->data_len += totlen; +} + +static inline void +bnad_cq_setup_skb(struct bnad *bnad, struct sk_buff *skb, + struct bnad_rx_unmap *unmap, u32 len) +{ + prefetch(skb->data); + + dma_unmap_single(&bnad->pcidev->dev, + dma_unmap_addr(&unmap->vector, dma_addr), + unmap->vector.len, DMA_FROM_DEVICE); + + skb_put(skb, len); + skb->protocol = eth_type_trans(skb, bnad->netdev); + + unmap->skb = NULL; + unmap->vector.len = 0; +} + +static u32 +bnad_cq_process(struct bnad *bnad, struct bna_ccb *ccb, int budget) +{ + struct bna_cq_entry *cq, *cmpl, *next_cmpl; + struct bna_rcb *rcb = NULL; + struct bnad_rx_unmap_q *unmap_q; + struct bnad_rx_unmap *unmap = NULL; + struct sk_buff *skb = NULL; + struct bna_pkt_rate *pkt_rt = &ccb->pkt_rate; + struct bnad_rx_ctrl *rx_ctrl = ccb->ctrl; + u32 packets = 0, len = 0, totlen = 0; + u32 pi, vec, sop_ci = 0, nvecs = 0; + u32 flags, masked_flags; + + prefetch(bnad->netdev); + + cq = ccb->sw_q; + + while (packets < budget) { + cmpl = &cq[ccb->producer_index]; + if (!cmpl->valid) + break; + /* The 'valid' field is set by the adapter, only after writing + * the other fields of completion entry. Hence, do not load + * other fields of completion entry *before* the 'valid' is + * loaded. Adding the rmb() here prevents the compiler and/or + * CPU from reordering the reads which would potentially result + * in reading stale values in completion entry. + */ + rmb(); + + BNA_UPDATE_PKT_CNT(pkt_rt, ntohs(cmpl->length)); + + if (bna_is_small_rxq(cmpl->rxq_id)) + rcb = ccb->rcb[1]; + else + rcb = ccb->rcb[0]; + + unmap_q = rcb->unmap_q; + + /* start of packet ci */ + sop_ci = rcb->consumer_index; + + if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) { + unmap = &unmap_q->unmap[sop_ci]; + skb = unmap->skb; + } else { + skb = napi_get_frags(&rx_ctrl->napi); + if (unlikely(!skb)) + break; + } + prefetch(skb); + + flags = ntohl(cmpl->flags); + len = ntohs(cmpl->length); + totlen = len; + nvecs = 1; + + /* Check all the completions for this frame. + * busy-wait doesn't help much, break here. + */ + if (BNAD_RXBUF_IS_MULTI_BUFF(unmap_q->type) && + (flags & BNA_CQ_EF_EOP) == 0) { + pi = ccb->producer_index; + do { + BNA_QE_INDX_INC(pi, ccb->q_depth); + next_cmpl = &cq[pi]; + + if (!next_cmpl->valid) + break; + /* The 'valid' field is set by the adapter, only + * after writing the other fields of completion + * entry. Hence, do not load other fields of + * completion entry *before* the 'valid' is + * loaded. Adding the rmb() here prevents the + * compiler and/or CPU from reordering the reads + * which would potentially result in reading + * stale values in completion entry. + */ + rmb(); + + len = ntohs(next_cmpl->length); + flags = ntohl(next_cmpl->flags); + + nvecs++; + totlen += len; + } while ((flags & BNA_CQ_EF_EOP) == 0); + + if (!next_cmpl->valid) + break; + } + packets++; + + /* TODO: BNA_CQ_EF_LOCAL ? */ + if (unlikely(flags & (BNA_CQ_EF_MAC_ERROR | + BNA_CQ_EF_FCS_ERROR | + BNA_CQ_EF_TOO_LONG))) { + bnad_cq_drop_packet(bnad, rcb, sop_ci, nvecs); + rcb->rxq->rx_packets_with_error++; + + goto next; + } + + if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) + bnad_cq_setup_skb(bnad, skb, unmap, len); + else + bnad_cq_setup_skb_frags(ccb, skb, nvecs); + + rcb->rxq->rx_packets++; + rcb->rxq->rx_bytes += totlen; + ccb->bytes_per_intr += totlen; + + masked_flags = flags & flags_cksum_prot_mask; + + if (likely + ((bnad->netdev->features & NETIF_F_RXCSUM) && + ((masked_flags == flags_tcp4) || + (masked_flags == flags_udp4) || + (masked_flags == flags_tcp6) || + (masked_flags == flags_udp6)))) + skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb_checksum_none_assert(skb); + + if ((flags & BNA_CQ_EF_VLAN) && + (bnad->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)) + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(cmpl->vlan_tag)); + + if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) + netif_receive_skb(skb); + else + napi_gro_frags(&rx_ctrl->napi); + +next: + BNA_QE_INDX_ADD(rcb->consumer_index, nvecs, rcb->q_depth); + for (vec = 0; vec < nvecs; vec++) { + cmpl = &cq[ccb->producer_index]; + cmpl->valid = 0; + BNA_QE_INDX_INC(ccb->producer_index, ccb->q_depth); + } + } + + napi_gro_flush(&rx_ctrl->napi, false); + if (likely(test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags))) + bna_ib_ack_disable_irq(ccb->i_dbell, packets); + + bnad_rxq_post(bnad, ccb->rcb[0]); + if (ccb->rcb[1]) + bnad_rxq_post(bnad, ccb->rcb[1]); + + return packets; +} + +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); + struct napi_struct *napi = &rx_ctrl->napi; + + if (likely(napi_schedule_prep(napi))) { + __napi_schedule(napi); + rx_ctrl->rx_schedule++; + } +} + +/* MSIX Rx Path Handler */ +static irqreturn_t +bnad_msix_rx(int irq, void *data) +{ + struct bna_ccb *ccb = (struct bna_ccb *)data; + + if (ccb) { + ((struct bnad_rx_ctrl *)ccb->ctrl)->rx_intr_ctr++; + bnad_netif_rx_schedule_poll(ccb->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 bnad *bnad = (struct bnad *)data; + + spin_lock_irqsave(&bnad->bna_lock, flags); + if (unlikely(test_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))) { + spin_unlock_irqrestore(&bnad->bna_lock, flags); + return IRQ_HANDLED; + } + + bna_intr_status_get(&bnad->bna, intr_status); + + if (BNA_IS_MBOX_ERR_INTR(&bnad->bna, intr_status)) + bna_mbox_handler(&bnad->bna, intr_status); + + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + return IRQ_HANDLED; +} + +static irqreturn_t +bnad_isr(int irq, void *data) +{ + int i, j; + u32 intr_status; + unsigned long flags; + struct bnad *bnad = (struct bnad *)data; + struct bnad_rx_info *rx_info; + struct bnad_rx_ctrl *rx_ctrl; + struct bna_tcb *tcb = NULL; + + spin_lock_irqsave(&bnad->bna_lock, flags); + if (unlikely(test_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))) { + spin_unlock_irqrestore(&bnad->bna_lock, flags); + return IRQ_NONE; + } + + bna_intr_status_get(&bnad->bna, intr_status); + + if (unlikely(!intr_status)) { + spin_unlock_irqrestore(&bnad->bna_lock, flags); + return IRQ_NONE; + } + + if (BNA_IS_MBOX_ERR_INTR(&bnad->bna, intr_status)) + bna_mbox_handler(&bnad->bna, intr_status); + + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + if (!BNA_IS_INTX_DATA_INTR(intr_status)) + return IRQ_HANDLED; + + /* Process data interrupts */ + /* Tx processing */ + 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 && test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) + bnad_tx_complete(bnad, bnad->tx_info[i].tcb[j]); + } + } + /* Rx processing */ + 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); + } + } + 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) +{ + clear_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags); + + BNAD_UPDATE_CTR(bnad, mbox_intr_enabled); +} + +/* + * Called with bnad->bna_lock held b'cos of + * bnad->cfg_flags access. + */ +static void +bnad_disable_mbox_irq(struct bnad *bnad) +{ + set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags); + + BNAD_UPDATE_CTR(bnad, mbox_intr_disabled); +} + +static void +bnad_set_netdev_perm_addr(struct bnad *bnad) +{ + struct net_device *netdev = bnad->netdev; + + ether_addr_copy(netdev->perm_addr, bnad->perm_addr); + if (is_zero_ether_addr(netdev->dev_addr)) + ether_addr_copy(netdev->dev_addr, bnad->perm_addr); +} + +/* Control Path Handlers */ + +/* Callbacks */ +void +bnad_cb_mbox_intr_enable(struct bnad *bnad) +{ + bnad_enable_mbox_irq(bnad); +} + +void +bnad_cb_mbox_intr_disable(struct bnad *bnad) +{ + bnad_disable_mbox_irq(bnad); +} + +void +bnad_cb_ioceth_ready(struct bnad *bnad) +{ + bnad->bnad_completions.ioc_comp_status = BNA_CB_SUCCESS; + complete(&bnad->bnad_completions.ioc_comp); +} + +void +bnad_cb_ioceth_failed(struct bnad *bnad) +{ + bnad->bnad_completions.ioc_comp_status = BNA_CB_FAIL; + complete(&bnad->bnad_completions.ioc_comp); +} + +void +bnad_cb_ioceth_disabled(struct bnad *bnad) +{ + bnad->bnad_completions.ioc_comp_status = BNA_CB_SUCCESS; + complete(&bnad->bnad_completions.ioc_comp); +} + +static void +bnad_cb_enet_disabled(void *arg) +{ + struct bnad *bnad = (struct bnad *)arg; + + netif_carrier_off(bnad->netdev); + complete(&bnad->bnad_completions.enet_comp); +} + +void +bnad_cb_ethport_link_status(struct bnad *bnad, + enum bna_link_status link_status) +{ + bool link_up = false; + + link_up = (link_status == BNA_LINK_UP) || (link_status == BNA_CEE_UP); + + if (link_status == BNA_CEE_UP) { + if (!test_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags)) + BNAD_UPDATE_CTR(bnad, cee_toggle); + set_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags); + } else { + if (test_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags)) + BNAD_UPDATE_CTR(bnad, cee_toggle); + clear_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags); + } + + if (link_up) { + if (!netif_carrier_ok(bnad->netdev)) { + uint tx_id, tcb_id; + netdev_info(bnad->netdev, "link up\n"); + netif_carrier_on(bnad->netdev); + BNAD_UPDATE_CTR(bnad, link_toggle); + for (tx_id = 0; tx_id < bnad->num_tx; tx_id++) { + for (tcb_id = 0; tcb_id < bnad->num_txq_per_tx; + tcb_id++) { + struct bna_tcb *tcb = + bnad->tx_info[tx_id].tcb[tcb_id]; + u32 txq_id; + if (!tcb) + continue; + + txq_id = tcb->id; + + if (test_bit(BNAD_TXQ_TX_STARTED, + &tcb->flags)) { + /* + * Force an immediate + * Transmit Schedule */ + netif_wake_subqueue( + bnad->netdev, + txq_id); + BNAD_UPDATE_CTR(bnad, + netif_queue_wakeup); + } else { + netif_stop_subqueue( + bnad->netdev, + txq_id); + BNAD_UPDATE_CTR(bnad, + netif_queue_stop); + } + } + } + } + } else { + if (netif_carrier_ok(bnad->netdev)) { + netdev_info(bnad->netdev, "link down\n"); + netif_carrier_off(bnad->netdev); + BNAD_UPDATE_CTR(bnad, link_toggle); + } + } +} + +static void +bnad_cb_tx_disabled(void *arg, struct bna_tx *tx) +{ + 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; + + tcb->priv = tcb; + tx_info->tcb[tcb->id] = tcb; +} + +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; + tcb->priv = NULL; +} + +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_tx *tx) +{ + struct bnad_tx_info *tx_info = + (struct bnad_tx_info *)tx->priv; + struct bna_tcb *tcb; + u32 txq_id; + int i; + + for (i = 0; i < BNAD_MAX_TXQ_PER_TX; i++) { + tcb = tx_info->tcb[i]; + if (!tcb) + continue; + txq_id = tcb->id; + clear_bit(BNAD_TXQ_TX_STARTED, &tcb->flags); + netif_stop_subqueue(bnad->netdev, txq_id); + } +} + +static void +bnad_cb_tx_resume(struct bnad *bnad, struct bna_tx *tx) +{ + struct bnad_tx_info *tx_info = (struct bnad_tx_info *)tx->priv; + struct bna_tcb *tcb; + u32 txq_id; + int i; + + for (i = 0; i < BNAD_MAX_TXQ_PER_TX; i++) { + tcb = tx_info->tcb[i]; + if (!tcb) + continue; + txq_id = tcb->id; + + BUG_ON(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)); + set_bit(BNAD_TXQ_TX_STARTED, &tcb->flags); + BUG_ON(*(tcb->hw_consumer_index) != 0); + + if (netif_carrier_ok(bnad->netdev)) { + netif_wake_subqueue(bnad->netdev, txq_id); + BNAD_UPDATE_CTR(bnad, netif_queue_wakeup); + } + } + + /* + * Workaround for first ioceth enable failure & we + * get a 0 MAC address. We try to get the MAC address + * again here. + */ + if (is_zero_ether_addr(bnad->perm_addr)) { + bna_enet_perm_mac_get(&bnad->bna.enet, bnad->perm_addr); + bnad_set_netdev_perm_addr(bnad); + } +} + +/* + * Free all TxQs buffers and then notify TX_E_CLEANUP_DONE to Tx fsm. + */ +static void +bnad_tx_cleanup(struct delayed_work *work) +{ + struct bnad_tx_info *tx_info = + container_of(work, struct bnad_tx_info, tx_cleanup_work); + struct bnad *bnad = NULL; + struct bna_tcb *tcb; + unsigned long flags; + u32 i, pending = 0; + + for (i = 0; i < BNAD_MAX_TXQ_PER_TX; i++) { + tcb = tx_info->tcb[i]; + if (!tcb) + continue; + + bnad = tcb->bnad; + + if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) { + pending++; + continue; + } + + bnad_txq_cleanup(bnad, tcb); + + smp_mb__before_atomic(); + clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); + } + + if (pending) { + queue_delayed_work(bnad->work_q, &tx_info->tx_cleanup_work, + msecs_to_jiffies(1)); + return; + } + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_tx_cleanup_complete(tx_info->tx); + spin_unlock_irqrestore(&bnad->bna_lock, flags); +} + +static void +bnad_cb_tx_cleanup(struct bnad *bnad, struct bna_tx *tx) +{ + struct bnad_tx_info *tx_info = (struct bnad_tx_info *)tx->priv; + struct bna_tcb *tcb; + int i; + + for (i = 0; i < BNAD_MAX_TXQ_PER_TX; i++) { + tcb = tx_info->tcb[i]; + if (!tcb) + continue; + } + + queue_delayed_work(bnad->work_q, &tx_info->tx_cleanup_work, 0); +} + +static void +bnad_cb_rx_stall(struct bnad *bnad, struct bna_rx *rx) +{ + struct bnad_rx_info *rx_info = (struct bnad_rx_info *)rx->priv; + struct bna_ccb *ccb; + struct bnad_rx_ctrl *rx_ctrl; + int i; + + for (i = 0; i < BNAD_MAX_RXP_PER_RX; i++) { + rx_ctrl = &rx_info->rx_ctrl[i]; + ccb = rx_ctrl->ccb; + if (!ccb) + continue; + + clear_bit(BNAD_RXQ_POST_OK, &ccb->rcb[0]->flags); + + if (ccb->rcb[1]) + clear_bit(BNAD_RXQ_POST_OK, &ccb->rcb[1]->flags); + } +} + +/* + * Free all RxQs buffers and then notify RX_E_CLEANUP_DONE to Rx fsm. + */ +static void +bnad_rx_cleanup(void *work) +{ + struct bnad_rx_info *rx_info = + container_of(work, struct bnad_rx_info, rx_cleanup_work); + struct bnad_rx_ctrl *rx_ctrl; + struct bnad *bnad = NULL; + unsigned long flags; + u32 i; + + for (i = 0; i < BNAD_MAX_RXP_PER_RX; i++) { + rx_ctrl = &rx_info->rx_ctrl[i]; + + if (!rx_ctrl->ccb) + continue; + + bnad = rx_ctrl->ccb->bnad; + + /* + * Wait till the poll handler has exited + * and nothing can be scheduled anymore + */ + napi_disable(&rx_ctrl->napi); + + bnad_cq_cleanup(bnad, rx_ctrl->ccb); + bnad_rxq_cleanup(bnad, rx_ctrl->ccb->rcb[0]); + if (rx_ctrl->ccb->rcb[1]) + bnad_rxq_cleanup(bnad, rx_ctrl->ccb->rcb[1]); + } + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_rx_cleanup_complete(rx_info->rx); + spin_unlock_irqrestore(&bnad->bna_lock, flags); +} + +static void +bnad_cb_rx_cleanup(struct bnad *bnad, struct bna_rx *rx) +{ + struct bnad_rx_info *rx_info = (struct bnad_rx_info *)rx->priv; + struct bna_ccb *ccb; + struct bnad_rx_ctrl *rx_ctrl; + int i; + + for (i = 0; i < BNAD_MAX_RXP_PER_RX; i++) { + rx_ctrl = &rx_info->rx_ctrl[i]; + ccb = rx_ctrl->ccb; + if (!ccb) + continue; + + clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags); + + if (ccb->rcb[1]) + clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[1]->flags); + } + + queue_work(bnad->work_q, &rx_info->rx_cleanup_work); +} + +static void +bnad_cb_rx_post(struct bnad *bnad, struct bna_rx *rx) +{ + struct bnad_rx_info *rx_info = (struct bnad_rx_info *)rx->priv; + struct bna_ccb *ccb; + struct bna_rcb *rcb; + struct bnad_rx_ctrl *rx_ctrl; + int i, j; + + for (i = 0; i < BNAD_MAX_RXP_PER_RX; i++) { + rx_ctrl = &rx_info->rx_ctrl[i]; + ccb = rx_ctrl->ccb; + if (!ccb) + continue; + + napi_enable(&rx_ctrl->napi); + + for (j = 0; j < BNAD_MAX_RXQ_PER_RXP; j++) { + rcb = ccb->rcb[j]; + if (!rcb) + continue; + + bnad_rxq_alloc_init(bnad, rcb); + set_bit(BNAD_RXQ_STARTED, &rcb->flags); + set_bit(BNAD_RXQ_POST_OK, &rcb->flags); + bnad_rxq_post(bnad, rcb); + } + } +} + +static void +bnad_cb_rx_disabled(void *arg, struct bna_rx *rx) +{ + 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) +{ + bnad->bnad_completions.mcast_comp_status = BNA_CB_SUCCESS; + 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)); +} + +static void +bnad_cb_enet_mtu_set(struct bnad *bnad) +{ + bnad->bnad_completions.mtu_comp_status = BNA_CB_SUCCESS; + complete(&bnad->bnad_completions.mtu_comp); +} + +void +bnad_cb_completion(void *arg, enum bfa_status status) +{ + struct bnad_iocmd_comp *iocmd_comp = + (struct bnad_iocmd_comp *)arg; + + iocmd_comp->comp_status = (u32) status; + complete(&iocmd_comp->comp); +} + +/* 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); + dma_free_coherent(&bnad->pcidev->dev, + 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 = + dma_alloc_coherent(&bnad->pcidev->dev, + mem_info->len, &dma_pa, + GFP_KERNEL); + 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) +{ + int irq; + unsigned long flags; + + spin_lock_irqsave(&bnad->bna_lock, flags); + bnad_disable_mbox_irq(bnad); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + irq = BNAD_GET_MBOX_IRQ(bnad); + free_irq(irq, bnad); +} + +/* + * 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) +{ + int err = 0; + unsigned long irq_flags, flags; + u32 irq; + irq_handler_t irq_handler; + + 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_MAILBOX_MSIX_INDEX].vector; + irq_flags = 0; + } else { + irq_handler = (irq_handler_t)bnad_isr; + irq = bnad->pcidev->irq; + irq_flags = IRQF_SHARED; + } + + spin_unlock_irqrestore(&bnad->bna_lock, flags); + sprintf(bnad->mbox_irq_name, "%s", BNAD_NAME); + + /* + * Set the Mbox IRQ disable flag, so that the IRQ handler + * called from request_irq() for SHARED IRQs do not execute + */ + set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags); + + BNAD_UPDATE_CTR(bnad, mbox_intr_disabled); + + err = request_irq(irq, irq_handler, irq_flags, + bnad->mbox_irq_name, bnad); + + return err; +} + +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, + u32 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 = BNAD_MAILBOX_MSIX_VECTORS + txrx_id; + break; + + case BNAD_INTR_RX: + vector_start = BNAD_MAILBOX_MSIX_VECTORS + + (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 = BNAD_INTX_TX_IB_BITMASK; + break; + + case BNAD_INTR_RX: + intr_info->idl[0].vector = BNAD_INTX_RX_IB_BITMASK; + 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, + u32 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, + u32 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, + u32 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(struct timer_list *t) +{ + struct bnad *bnad = from_timer(bnad, t, bna.ioceth.ioc.ioc_timer); + unsigned long flags; + + spin_lock_irqsave(&bnad->bna_lock, flags); + bfa_nw_ioc_timeout(&bnad->bna.ioceth.ioc); + spin_unlock_irqrestore(&bnad->bna_lock, flags); +} + +static void +bnad_ioc_hb_check(struct timer_list *t) +{ + struct bnad *bnad = from_timer(bnad, t, bna.ioceth.ioc.hb_timer); + unsigned long flags; + + spin_lock_irqsave(&bnad->bna_lock, flags); + bfa_nw_ioc_hb_check(&bnad->bna.ioceth.ioc); + spin_unlock_irqrestore(&bnad->bna_lock, flags); +} + +static void +bnad_iocpf_timeout(struct timer_list *t) +{ + struct bnad *bnad = from_timer(bnad, t, bna.ioceth.ioc.iocpf_timer); + unsigned long flags; + + spin_lock_irqsave(&bnad->bna_lock, flags); + bfa_nw_iocpf_timeout(&bnad->bna.ioceth.ioc); + spin_unlock_irqrestore(&bnad->bna_lock, flags); +} + +static void +bnad_iocpf_sem_timeout(struct timer_list *t) +{ + struct bnad *bnad = from_timer(bnad, t, bna.ioceth.ioc.sem_timer); + unsigned long flags; + + spin_lock_irqsave(&bnad->bna_lock, flags); + bfa_nw_iocpf_sem_timeout(&bnad->bna.ioceth.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(struct timer_list *t) +{ + struct bnad *bnad = from_timer(bnad, t, dim_timer); + 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(struct timer_list *t) +{ + struct bnad *bnad = from_timer(bnad, t, stats_timer); + 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_hw_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)) { + timer_setup(&bnad->dim_timer, bnad_dim_timeout, 0); + 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)) { + timer_setup(&bnad->stats_timer, bnad_stats_timeout, 0); + 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) { + ether_addr_copy(&mc_list[i * ETH_ALEN], &mc_addr->addr[0]); + 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 bnad *bnad = rx_ctrl->bnad; + int rcvd = 0; + + rx_ctrl->rx_poll_ctr++; + + if (!netif_carrier_ok(bnad->netdev)) + goto poll_exit; + + rcvd = bnad_cq_process(bnad, rx_ctrl->ccb, budget); + if (rcvd >= budget) + return rcvd; + +poll_exit: + napi_complete_done(napi, rcvd); + + rx_ctrl->rx_complete++; + + if (rx_ctrl->ccb) + bnad_enable_rx_irq_unsafe(rx_ctrl->ccb); + + return rcvd; +} + +#define BNAD_NAPI_POLL_QUOTA 64 +static void +bnad_napi_add(struct bnad *bnad, u32 rx_id) +{ + struct bnad_rx_ctrl *rx_ctrl; + int i; + + /* 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, + bnad_napi_poll_rx, BNAD_NAPI_POLL_QUOTA); + } +} + +static void +bnad_napi_delete(struct bnad *bnad, u32 rx_id) +{ + int i; + + /* First disable and then clean up */ + for (i = 0; i < bnad->num_rxp_per_rx; i++) + netif_napi_del(&bnad->rx_info[rx_id].rx_ctrl[i].napi); +} + +/* Should be held with conf_lock held */ +void +bnad_destroy_tx(struct bnad *bnad, u32 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; + tx_info->tx_id = 0; + + bnad_tx_res_free(bnad, res_info); +} + +/* Should be held with conf_lock held */ +int +bnad_setup_tx(struct bnad *bnad, u32 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]; + static const struct bna_tx_event_cbfn tx_cbfn = { + .tcb_setup_cbfn = bnad_cb_tcb_setup, + .tcb_destroy_cbfn = bnad_cb_tcb_destroy, + .tx_stall_cbfn = bnad_cb_tx_stall, + .tx_resume_cbfn = bnad_cb_tx_resume, + .tx_cleanup_cbfn = bnad_cb_tx_cleanup, + }; + + struct bna_tx *tx; + unsigned long flags; + + tx_info->tx_id = tx_id; + + /* 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; + tx_config->coalescing_timeo = bnad->tx_coalescing_timeo; + + /* 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, (sizeof(struct bnad_tx_unmap) * + bnad->txq_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) { + err = -ENOMEM; + goto err_return; + } + tx_info->tx = tx; + + INIT_DELAYED_WORK(&tx_info->tx_cleanup_work, + (work_func_t)bnad_tx_cleanup); + + /* 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 cleanup_tx; + } + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_tx_enable(tx); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + return 0; + +cleanup_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; + tx_info->tx_id = 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) +{ + memset(rx_config, 0, sizeof(*rx_config)); + rx_config->rx_type = BNA_RX_T_REGULAR; + rx_config->num_paths = bnad->num_rxp_per_rx; + rx_config->coalescing_timeo = bnad->rx_coalescing_timeo; + + if (bnad->num_rxp_per_rx > 1) { + rx_config->rss_status = BNA_STATUS_T_ENABLED; + rx_config->rss_config.hash_type = + (BFI_ENET_RSS_IPV6 | + BFI_ENET_RSS_IPV6_TCP | + BFI_ENET_RSS_IPV4 | + BFI_ENET_RSS_IPV4_TCP); + rx_config->rss_config.hash_mask = + bnad->num_rxp_per_rx - 1; + netdev_rss_key_fill(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->frame_size = BNAD_FRAME_SIZE(bnad->netdev->mtu); + rx_config->q0_multi_buf = BNA_STATUS_T_DISABLED; + + /* BNA_RXP_SINGLE - one data-buffer queue + * BNA_RXP_SLR - one small-buffer and one large-buffer queues + * BNA_RXP_HDS - one header-buffer and one data-buffer queues + */ + /* TODO: configurable param for queue type */ + rx_config->rxp_type = BNA_RXP_SLR; + + if (BNAD_PCI_DEV_IS_CAT2(bnad) && + rx_config->frame_size > 4096) { + /* though size_routing_enable is set in SLR, + * small packets may get routed to same rxq. + * set buf_size to 2048 instead of PAGE_SIZE. + */ + rx_config->q0_buf_size = 2048; + /* this should be in multiples of 2 */ + rx_config->q0_num_vecs = 4; + rx_config->q0_depth = bnad->rxq_depth * rx_config->q0_num_vecs; + rx_config->q0_multi_buf = BNA_STATUS_T_ENABLED; + } else { + rx_config->q0_buf_size = rx_config->frame_size; + rx_config->q0_num_vecs = 1; + rx_config->q0_depth = bnad->rxq_depth; + } + + /* initialize for q1 for BNA_RXP_SLR/BNA_RXP_HDS */ + if (rx_config->rxp_type == BNA_RXP_SLR) { + rx_config->q1_depth = bnad->rxq_depth; + rx_config->q1_buf_size = BFI_SMALL_RXBUF_SIZE; + } + + rx_config->vlan_strip_status = + (bnad->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) ? + BNA_STATUS_T_ENABLED : BNA_STATUS_T_DISABLED; +} + +static void +bnad_rx_ctrl_init(struct bnad *bnad, u32 rx_id) +{ + struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id]; + int i; + + for (i = 0; i < bnad->num_rxp_per_rx; i++) + rx_info->rx_ctrl[i].bnad = bnad; +} + +/* Called with mutex_lock(&bnad->conf_mutex) held */ +static u32 +bnad_reinit_rx(struct bnad *bnad) +{ + struct net_device *netdev = bnad->netdev; + u32 err = 0, current_err = 0; + u32 rx_id = 0, count = 0; + unsigned long flags; + + /* destroy and create new rx objects */ + for (rx_id = 0; rx_id < bnad->num_rx; rx_id++) { + if (!bnad->rx_info[rx_id].rx) + continue; + bnad_destroy_rx(bnad, rx_id); + } + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_enet_mtu_set(&bnad->bna.enet, + BNAD_FRAME_SIZE(bnad->netdev->mtu), NULL); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + for (rx_id = 0; rx_id < bnad->num_rx; rx_id++) { + count++; + current_err = bnad_setup_rx(bnad, rx_id); + if (current_err && !err) { + err = current_err; + netdev_err(netdev, "RXQ:%u setup failed\n", rx_id); + } + } + + /* restore rx configuration */ + if (bnad->rx_info[0].rx && !err) { + bnad_restore_vlans(bnad, 0); + bnad_enable_default_bcast(bnad); + spin_lock_irqsave(&bnad->bna_lock, flags); + bnad_mac_addr_set_locked(bnad, netdev->dev_addr); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + bnad_set_rx_mode(netdev); + } + + return count; +} + +/* Called with bnad_conf_lock() held */ +void +bnad_destroy_rx(struct bnad *bnad, u32 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 to_del = 0; + + if (!rx_info->rx) + return; + + if (0 == rx_id) { + spin_lock_irqsave(&bnad->bna_lock, flags); + if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED && + test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags)) { + clear_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags); + to_del = 1; + } + spin_unlock_irqrestore(&bnad->bna_lock, flags); + if (to_del) + del_timer_sync(&bnad->dim_timer); + } + + 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); + + bnad_napi_delete(bnad, rx_id); + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_rx_destroy(rx_info->rx); + + rx_info->rx = NULL; + rx_info->rx_id = 0; + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + bnad_rx_res_free(bnad, res_info); +} + +/* Called with mutex_lock(&bnad->conf_mutex) held */ +int +bnad_setup_rx(struct bnad *bnad, u32 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]; + static const struct bna_rx_event_cbfn rx_cbfn = { + .rcb_setup_cbfn = NULL, + .rcb_destroy_cbfn = NULL, + .ccb_setup_cbfn = bnad_cb_ccb_setup, + .ccb_destroy_cbfn = bnad_cb_ccb_destroy, + .rx_stall_cbfn = bnad_cb_rx_stall, + .rx_cleanup_cbfn = bnad_cb_rx_cleanup, + .rx_post_cbfn = bnad_cb_rx_post, + }; + struct bna_rx *rx; + unsigned long flags; + + rx_info->rx_id = rx_id; + + /* Initialize the Rx object configuration */ + bnad_init_rx_config(bnad, rx_config); + + /* 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_UNMAPDQ], + rx_config->num_paths, + (rx_config->q0_depth * + sizeof(struct bnad_rx_unmap)) + + sizeof(struct bnad_rx_unmap_q)); + + if (rx_config->rxp_type != BNA_RXP_SINGLE) { + BNAD_FILL_UNMAPQ_MEM_REQ(&res_info[BNA_RX_RES_MEM_T_UNMAPHQ], + rx_config->num_paths, + (rx_config->q1_depth * + sizeof(struct bnad_rx_unmap) + + sizeof(struct bnad_rx_unmap_q))); + } + /* Allocate resource */ + err = bnad_rx_res_alloc(bnad, res_info, rx_id); + if (err) + return err; + + bnad_rx_ctrl_init(bnad, rx_id); + + /* 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); + if (!rx) { + err = -ENOMEM; + spin_unlock_irqrestore(&bnad->bna_lock, flags); + goto err_return; + } + rx_info->rx = rx; + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + INIT_WORK(&rx_info->rx_cleanup_work, + (work_func_t)(bnad_rx_cleanup)); + + /* + * Init NAPI, so that state is set to NAPI_STATE_SCHED, + * so that IRQ handler cannot schedule NAPI at this point. + */ + bnad_napi_add(bnad, rx_id); + + /* 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; + } + + 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_destroy_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 + */ +int +bnad_mac_addr_set_locked(struct bnad *bnad, const 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); + if (ret != BNA_CB_SUCCESS) + return -EADDRNOTAVAIL; + + return 0; +} + +/* Should be called with conf_lock held */ +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, 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; +} + +/* Called with mutex_lock(&bnad->conf_mutex) held */ +void +bnad_restore_vlans(struct bnad *bnad, u32 rx_id) +{ + u16 vid; + unsigned long flags; + + for_each_set_bit(vid, bnad->active_vlans, VLAN_N_VID) { + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_rx_vlan_add(bnad->rx_info[rx_id].rx, vid); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + } +} + +/* Statistics utilities */ +void +bnad_netdev_qstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *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) { + stats->rx_packets += bnad->rx_info[i]. + rx_ctrl[j].ccb->rcb[0]->rxq->rx_packets; + 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) { + stats->rx_packets += + bnad->rx_info[i].rx_ctrl[j]. + ccb->rcb[1]->rxq->rx_packets; + 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]) { + stats->tx_packets += + bnad->tx_info[i].tcb[j]->txq->tx_packets; + 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 rtnl_link_stats64 *stats) +{ + struct bfi_enet_stats_mac *mac_stats; + u32 bmap; + int i; + + mac_stats = &bnad->stats.bna_stats->hw_stats.mac_stats; + 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; + stats->tx_errors = mac_stats->tx_fcs_error + + mac_stats->tx_undersize; + stats->rx_dropped = mac_stats->rx_drop; + stats->tx_dropped = mac_stats->tx_drop; + stats->multicast = mac_stats->rx_multicast; + stats->collisions = mac_stats->tx_total_collision; + + stats->rx_length_errors = mac_stats->rx_frame_length_error; + + /* receive ring buffer overflow ?? */ + + stats->rx_crc_errors = mac_stats->rx_fcs_error; + stats->rx_frame_errors = mac_stats->rx_alignment_error; + /* recv'r fifo overrun */ + bmap = bna_rx_rid_mask(&bnad->bna); + for (i = 0; bmap; i++) { + if (bmap & 1) { + 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_MAILBOX_MSIX_INDEX].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; + + err = skb_cow_head(skb, 0); + if (err < 0) { + 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 (vlan_get_protocol(skb) == 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); + + 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_RX * BNAD_MAX_RXP_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, int temp) +{ + 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; +} + +/* Enable / disable ioceth */ +static int +bnad_ioceth_disable(struct bnad *bnad) +{ + unsigned long flags; + int err = 0; + + spin_lock_irqsave(&bnad->bna_lock, flags); + init_completion(&bnad->bnad_completions.ioc_comp); + bna_ioceth_disable(&bnad->bna.ioceth, BNA_HARD_CLEANUP); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + wait_for_completion_timeout(&bnad->bnad_completions.ioc_comp, + msecs_to_jiffies(BNAD_IOCETH_TIMEOUT)); + + err = bnad->bnad_completions.ioc_comp_status; + return err; +} + +static int +bnad_ioceth_enable(struct bnad *bnad) +{ + int err = 0; + unsigned long flags; + + spin_lock_irqsave(&bnad->bna_lock, flags); + init_completion(&bnad->bnad_completions.ioc_comp); + bnad->bnad_completions.ioc_comp_status = BNA_CB_WAITING; + bna_ioceth_enable(&bnad->bna.ioceth); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + wait_for_completion_timeout(&bnad->bnad_completions.ioc_comp, + msecs_to_jiffies(BNAD_IOCETH_TIMEOUT)); + + err = bnad->bnad_completions.ioc_comp_status; + + return err; +} + +/* Free BNA resources */ +static void +bnad_res_free(struct bnad *bnad, struct bna_res_info *res_info, + u32 res_val_max) +{ + int i; + + for (i = 0; i < res_val_max; i++) + bnad_mem_free(bnad, &res_info[i].res_u.mem_info); +} + +/* Allocates memory and interrupt resources for BNA */ +static int +bnad_res_alloc(struct bnad *bnad, struct bna_res_info *res_info, + u32 res_val_max) +{ + int i, err; + + for (i = 0; i < res_val_max; i++) { + err = bnad_mem_alloc(bnad, &res_info[i].res_u.mem_info); + if (err) + goto err_return; + } + return 0; + +err_return: + bnad_res_free(bnad, res_info, res_val_max); + return err; +} + +/* Interrupt enable / disable */ +static void +bnad_enable_msix(struct bnad *bnad) +{ + int i, ret; + 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; + + bnad->msix_table = + kcalloc(bnad->msix_num, sizeof(struct msix_entry), GFP_KERNEL); + + if (!bnad->msix_table) + goto intx_mode; + + for (i = 0; i < bnad->msix_num; i++) + bnad->msix_table[i].entry = i; + + ret = pci_enable_msix_range(bnad->pcidev, bnad->msix_table, + 1, bnad->msix_num); + if (ret < 0) { + goto intx_mode; + } else if (ret < bnad->msix_num) { + dev_warn(&bnad->pcidev->dev, + "%d MSI-X vectors allocated < %d requested\n", + ret, bnad->msix_num); + + spin_lock_irqsave(&bnad->bna_lock, flags); + /* ret = #of vectors that we got */ + bnad_q_num_adjust(bnad, (ret - BNAD_MAILBOX_MSIX_VECTORS) / 2, + (ret - BNAD_MAILBOX_MSIX_VECTORS) / 2); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + bnad->msix_num = BNAD_NUM_TXQ + BNAD_NUM_RXP + + BNAD_MAILBOX_MSIX_VECTORS; + + if (bnad->msix_num > ret) { + pci_disable_msix(bnad->pcidev); + goto intx_mode; + } + } + + pci_intx(bnad->pcidev, 0); + + return; + +intx_mode: + dev_warn(&bnad->pcidev->dev, + "MSI-X enable failed - operating in INTx mode\n"); + + kfree(bnad->msix_table); + bnad->msix_table = NULL; + bnad->msix_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; + 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; + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_enet_mtu_set(&bnad->bna.enet, + BNAD_FRAME_SIZE(bnad->netdev->mtu), NULL); + bna_enet_pause_config(&bnad->bna.enet, &pause_config); + bna_enet_enable(&bnad->bna.enet); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + /* Enable broadcast */ + bnad_enable_default_bcast(bnad); + + /* Restore VLANs, if any */ + bnad_restore_vlans(bnad, 0); + + /* 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_destroy_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.enet_comp); + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_enet_disable(&bnad->bna.enet, BNA_HARD_CLEANUP, + bnad_cb_enet_disabled); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + wait_for_completion(&bnad->bnad_completions.enet_comp); + + bnad_destroy_tx(bnad, 0); + bnad_destroy_rx(bnad, 0); + + /* Synchronize mailbox IRQ */ + bnad_mbox_irq_sync(bnad); + + mutex_unlock(&bnad->conf_mutex); + + return 0; +} + +/* TX */ +/* Returns 0 for success */ +static int +bnad_txq_wi_prepare(struct bnad *bnad, struct bna_tcb *tcb, + struct sk_buff *skb, struct bna_txq_entry *txqent) +{ + u16 flags = 0; + u32 gso_size; + u16 vlan_tag = 0; + + if (skb_vlan_tag_present(skb)) { + vlan_tag = (u16)skb_vlan_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) << VLAN_PRIO_SHIFT) + | (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)) { + gso_size = skb_shinfo(skb)->gso_size; + if (unlikely(gso_size > bnad->netdev->mtu)) { + BNAD_UPDATE_CTR(bnad, tx_skb_mss_too_long); + return -EINVAL; + } + if (unlikely((gso_size + skb_transport_offset(skb) + + tcp_hdrlen(skb)) >= skb->len)) { + txqent->hdr.wi.opcode = htons(BNA_TXQ_WI_SEND); + txqent->hdr.wi.lso_mss = 0; + BNAD_UPDATE_CTR(bnad, tx_skb_tso_too_short); + } else { + txqent->hdr.wi.opcode = htons(BNA_TXQ_WI_SEND_LSO); + txqent->hdr.wi.lso_mss = htons(gso_size); + } + + if (bnad_tso_prepare(bnad, skb)) { + BNAD_UPDATE_CTR(bnad, tx_skb_tso_prepare); + return -EINVAL; + } + + 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 { + txqent->hdr.wi.opcode = htons(BNA_TXQ_WI_SEND); + txqent->hdr.wi.lso_mss = 0; + + if (unlikely(skb->len > (bnad->netdev->mtu + VLAN_ETH_HLEN))) { + BNAD_UPDATE_CTR(bnad, tx_skb_non_tso_too_long); + return -EINVAL; + } + + if (skb->ip_summed == CHECKSUM_PARTIAL) { + __be16 net_proto = vlan_get_protocol(skb); + u8 proto = 0; + + if (net_proto == htons(ETH_P_IP)) + proto = ip_hdr(skb)->protocol; +#ifdef NETIF_F_IPV6_CSUM + else if (net_proto == htons(ETH_P_IPV6)) { + /* nexthdr may not be TCP immediately. */ + proto = ipv6_hdr(skb)->nexthdr; + } +#endif + 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); + + if (unlikely(skb_headlen(skb) < + skb_transport_offset(skb) + + tcp_hdrlen(skb))) { + BNAD_UPDATE_CTR(bnad, tx_skb_tcp_hdr); + return -EINVAL; + } + } 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); + if (unlikely(skb_headlen(skb) < + skb_transport_offset(skb) + + sizeof(struct udphdr))) { + BNAD_UPDATE_CTR(bnad, tx_skb_udp_hdr); + return -EINVAL; + } + } else { + + BNAD_UPDATE_CTR(bnad, tx_skb_csum_err); + return -EINVAL; + } + } else + txqent->hdr.wi.l4_hdr_size_n_offset = 0; + } + + txqent->hdr.wi.flags = htons(flags); + txqent->hdr.wi.frame_length = htonl(skb->len); + + return 0; +} + +/* + * 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); + u32 txq_id = 0; + struct bna_tcb *tcb = NULL; + struct bnad_tx_unmap *unmap_q, *unmap, *head_unmap; + u32 prod, q_depth, vect_id; + u32 wis, vectors, len; + int i; + dma_addr_t dma_addr; + struct bna_txq_entry *txqent; + + len = skb_headlen(skb); + + /* Sanity checks for the skb */ + + if (unlikely(skb->len <= ETH_HLEN)) { + dev_kfree_skb_any(skb); + BNAD_UPDATE_CTR(bnad, tx_skb_too_short); + return NETDEV_TX_OK; + } + if (unlikely(len > BFI_TX_MAX_DATA_PER_VECTOR)) { + dev_kfree_skb_any(skb); + BNAD_UPDATE_CTR(bnad, tx_skb_headlen_zero); + return NETDEV_TX_OK; + } + if (unlikely(len == 0)) { + dev_kfree_skb_any(skb); + BNAD_UPDATE_CTR(bnad, tx_skb_headlen_zero); + return NETDEV_TX_OK; + } + + tcb = bnad->tx_info[0].tcb[txq_id]; + + /* + * Takes care of the Tx that is scheduled between clearing the flag + * and the netif_tx_stop_all_queues() call. + */ + if (unlikely(!tcb || !test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) { + dev_kfree_skb_any(skb); + BNAD_UPDATE_CTR(bnad, tx_skb_stopping); + return NETDEV_TX_OK; + } + + q_depth = tcb->q_depth; + prod = tcb->producer_index; + unmap_q = tcb->unmap_q; + + vectors = 1 + skb_shinfo(skb)->nr_frags; + wis = BNA_TXQ_WI_NEEDED(vectors); /* 4 vectors per work item */ + + if (unlikely(vectors > BFI_TX_MAX_VECTORS_PER_PKT)) { + dev_kfree_skb_any(skb); + BNAD_UPDATE_CTR(bnad, tx_skb_max_vectors); + return NETDEV_TX_OK; + } + + /* Check for available TxQ resources */ + if (unlikely(wis > BNA_QE_FREE_CNT(tcb, q_depth))) { + if ((*tcb->hw_consumer_index != tcb->consumer_index) && + !test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) { + u32 sent; + sent = bnad_txcmpl_process(bnad, tcb); + if (likely(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) + bna_ib_ack(tcb->i_dbell, sent); + smp_mb__before_atomic(); + 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, 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); + } + } + + txqent = &((struct bna_txq_entry *)tcb->sw_q)[prod]; + head_unmap = &unmap_q[prod]; + + /* Program the opcode, flags, frame_len, num_vectors in WI */ + if (bnad_txq_wi_prepare(bnad, tcb, skb, txqent)) { + dev_kfree_skb_any(skb); + return NETDEV_TX_OK; + } + txqent->hdr.wi.reserved = 0; + txqent->hdr.wi.num_vectors = vectors; + + head_unmap->skb = skb; + head_unmap->nvecs = 0; + + /* Program the vectors */ + unmap = head_unmap; + dma_addr = dma_map_single(&bnad->pcidev->dev, skb->data, + len, DMA_TO_DEVICE); + if (dma_mapping_error(&bnad->pcidev->dev, dma_addr)) { + dev_kfree_skb_any(skb); + BNAD_UPDATE_CTR(bnad, tx_skb_map_failed); + return NETDEV_TX_OK; + } + BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[0].host_addr); + txqent->vector[0].length = htons(len); + dma_unmap_addr_set(&unmap->vectors[0], dma_addr, dma_addr); + head_unmap->nvecs++; + + for (i = 0, vect_id = 0; i < vectors - 1; i++) { + const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; + u32 size = skb_frag_size(frag); + + if (unlikely(size == 0)) { + /* Undo the changes starting at tcb->producer_index */ + bnad_tx_buff_unmap(bnad, unmap_q, q_depth, + tcb->producer_index); + dev_kfree_skb_any(skb); + BNAD_UPDATE_CTR(bnad, tx_skb_frag_zero); + return NETDEV_TX_OK; + } + + len += size; + + vect_id++; + if (vect_id == BFI_TX_MAX_VECTORS_PER_WI) { + vect_id = 0; + BNA_QE_INDX_INC(prod, q_depth); + txqent = &((struct bna_txq_entry *)tcb->sw_q)[prod]; + txqent->hdr.wi_ext.opcode = htons(BNA_TXQ_WI_EXTENSION); + unmap = &unmap_q[prod]; + } + + dma_addr = skb_frag_dma_map(&bnad->pcidev->dev, frag, + 0, size, DMA_TO_DEVICE); + if (dma_mapping_error(&bnad->pcidev->dev, dma_addr)) { + /* Undo the changes starting at tcb->producer_index */ + bnad_tx_buff_unmap(bnad, unmap_q, q_depth, + tcb->producer_index); + dev_kfree_skb_any(skb); + BNAD_UPDATE_CTR(bnad, tx_skb_map_failed); + return NETDEV_TX_OK; + } + + dma_unmap_len_set(&unmap->vectors[vect_id], dma_len, size); + BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr); + txqent->vector[vect_id].length = htons(size); + dma_unmap_addr_set(&unmap->vectors[vect_id], dma_addr, + dma_addr); + head_unmap->nvecs++; + } + + if (unlikely(len != skb->len)) { + /* Undo the changes starting at tcb->producer_index */ + bnad_tx_buff_unmap(bnad, unmap_q, q_depth, tcb->producer_index); + dev_kfree_skb_any(skb); + BNAD_UPDATE_CTR(bnad, tx_skb_len_mismatch); + return NETDEV_TX_OK; + } + + BNA_QE_INDX_INC(prod, q_depth); + tcb->producer_index = prod; + + wmb(); + + if (unlikely(!test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) + return NETDEV_TX_OK; + + skb_tx_timestamp(skb); + + bna_txq_prod_indx_doorbell(tcb); + + return NETDEV_TX_OK; +} + +/* + * Used spin_lock to synchronize reading of stats structures, which + * is written by BNA under the same lock. + */ +static void +bnad_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) +{ + struct bnad *bnad = netdev_priv(netdev); + unsigned long flags; + + spin_lock_irqsave(&bnad->bna_lock, flags); + + bnad_netdev_qstats_fill(bnad, stats); + bnad_netdev_hwstats_fill(bnad, stats); + + spin_unlock_irqrestore(&bnad->bna_lock, flags); +} + +static void +bnad_set_rx_ucast_fltr(struct bnad *bnad) +{ + struct net_device *netdev = bnad->netdev; + int uc_count = netdev_uc_count(netdev); + enum bna_cb_status ret; + u8 *mac_list; + struct netdev_hw_addr *ha; + int entry; + + if (netdev_uc_empty(bnad->netdev)) { + bna_rx_ucast_listset(bnad->rx_info[0].rx, 0, NULL); + return; + } + + if (uc_count > bna_attr(&bnad->bna)->num_ucmac) + goto mode_default; + + mac_list = kcalloc(ETH_ALEN, uc_count, GFP_ATOMIC); + if (mac_list == NULL) + goto mode_default; + + entry = 0; + netdev_for_each_uc_addr(ha, netdev) { + ether_addr_copy(&mac_list[entry * ETH_ALEN], &ha->addr[0]); + entry++; + } + + ret = bna_rx_ucast_listset(bnad->rx_info[0].rx, entry, mac_list); + kfree(mac_list); + + if (ret != BNA_CB_SUCCESS) + goto mode_default; + + return; + + /* ucast packets not in UCAM are routed to default function */ +mode_default: + bnad->cfg_flags |= BNAD_CF_DEFAULT; + bna_rx_ucast_listset(bnad->rx_info[0].rx, 0, NULL); +} + +static void +bnad_set_rx_mcast_fltr(struct bnad *bnad) +{ + struct net_device *netdev = bnad->netdev; + int mc_count = netdev_mc_count(netdev); + enum bna_cb_status ret; + u8 *mac_list; + + if (netdev->flags & IFF_ALLMULTI) + goto mode_allmulti; + + if (netdev_mc_empty(netdev)) + return; + + if (mc_count > bna_attr(&bnad->bna)->num_mcmac) + goto mode_allmulti; + + mac_list = kcalloc(mc_count + 1, ETH_ALEN, GFP_ATOMIC); + + if (mac_list == NULL) + goto mode_allmulti; + + ether_addr_copy(&mac_list[0], &bnad_bcast_addr[0]); + + /* copy rest of the MCAST addresses */ + bnad_netdev_mc_list_get(netdev, mac_list); + ret = bna_rx_mcast_listset(bnad->rx_info[0].rx, mc_count + 1, mac_list); + kfree(mac_list); + + if (ret != BNA_CB_SUCCESS) + goto mode_allmulti; + + return; + +mode_allmulti: + bnad->cfg_flags |= BNAD_CF_ALLMULTI; + bna_rx_mcast_delall(bnad->rx_info[0].rx); +} + +void +bnad_set_rx_mode(struct net_device *netdev) +{ + struct bnad *bnad = netdev_priv(netdev); + enum bna_rxmode new_mode, mode_mask; + unsigned long flags; + + spin_lock_irqsave(&bnad->bna_lock, flags); + + if (bnad->rx_info[0].rx == NULL) { + spin_unlock_irqrestore(&bnad->bna_lock, flags); + return; + } + + /* clear bnad flags to update it with new settings */ + bnad->cfg_flags &= ~(BNAD_CF_PROMISC | BNAD_CF_DEFAULT | + BNAD_CF_ALLMULTI); + + new_mode = 0; + if (netdev->flags & IFF_PROMISC) { + new_mode |= BNAD_RXMODE_PROMISC_DEFAULT; + bnad->cfg_flags |= BNAD_CF_PROMISC; + } else { + bnad_set_rx_mcast_fltr(bnad); + + if (bnad->cfg_flags & BNAD_CF_ALLMULTI) + new_mode |= BNA_RXMODE_ALLMULTI; + + bnad_set_rx_ucast_fltr(bnad); + + if (bnad->cfg_flags & BNAD_CF_DEFAULT) + new_mode |= BNA_RXMODE_DEFAULT; + } + + mode_mask = BNA_RXMODE_PROMISC | BNA_RXMODE_DEFAULT | + BNA_RXMODE_ALLMULTI; + bna_rx_mode_set(bnad->rx_info[0].rx, new_mode, mode_mask); + + 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 *addr) +{ + int err; + struct bnad *bnad = netdev_priv(netdev); + struct sockaddr *sa = (struct sockaddr *)addr; + unsigned long flags; + + spin_lock_irqsave(&bnad->bna_lock, flags); + + err = bnad_mac_addr_set_locked(bnad, sa->sa_data); + if (!err) + ether_addr_copy(netdev->dev_addr, sa->sa_data); + + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + return err; +} + +static int +bnad_mtu_set(struct bnad *bnad, int frame_size) +{ + unsigned long flags; + + init_completion(&bnad->bnad_completions.mtu_comp); + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_enet_mtu_set(&bnad->bna.enet, frame_size, bnad_cb_enet_mtu_set); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + wait_for_completion(&bnad->bnad_completions.mtu_comp); + + return bnad->bnad_completions.mtu_comp_status; +} + +static int +bnad_change_mtu(struct net_device *netdev, int new_mtu) +{ + int err, mtu; + struct bnad *bnad = netdev_priv(netdev); + u32 frame, new_frame; + + mutex_lock(&bnad->conf_mutex); + + mtu = netdev->mtu; + netdev->mtu = new_mtu; + + frame = BNAD_FRAME_SIZE(mtu); + new_frame = BNAD_FRAME_SIZE(new_mtu); + + /* check if multi-buffer needs to be enabled */ + if (BNAD_PCI_DEV_IS_CAT2(bnad) && + netif_running(bnad->netdev)) { + /* only when transition is over 4K */ + if ((frame <= 4096 && new_frame > 4096) || + (frame > 4096 && new_frame <= 4096)) + bnad_reinit_rx(bnad); + } + + err = bnad_mtu_set(bnad, new_frame); + if (err) + err = -EBUSY; + + mutex_unlock(&bnad->conf_mutex); + return err; +} + +static int +bnad_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid) +{ + struct bnad *bnad = netdev_priv(netdev); + unsigned long flags; + + if (!bnad->rx_info[0].rx) + return 0; + + mutex_lock(&bnad->conf_mutex); + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_rx_vlan_add(bnad->rx_info[0].rx, vid); + set_bit(vid, bnad->active_vlans); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + mutex_unlock(&bnad->conf_mutex); + + return 0; +} + +static int +bnad_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) +{ + struct bnad *bnad = netdev_priv(netdev); + unsigned long flags; + + if (!bnad->rx_info[0].rx) + return 0; + + mutex_lock(&bnad->conf_mutex); + + spin_lock_irqsave(&bnad->bna_lock, flags); + clear_bit(vid, bnad->active_vlans); + bna_rx_vlan_del(bnad->rx_info[0].rx, vid); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + mutex_unlock(&bnad->conf_mutex); + + return 0; +} + +static int bnad_set_features(struct net_device *dev, netdev_features_t features) +{ + struct bnad *bnad = netdev_priv(dev); + netdev_features_t changed = features ^ dev->features; + + if ((changed & NETIF_F_HW_VLAN_CTAG_RX) && netif_running(dev)) { + unsigned long flags; + + spin_lock_irqsave(&bnad->bna_lock, flags); + + if (features & NETIF_F_HW_VLAN_CTAG_RX) + bna_rx_vlan_strip_enable(bnad->rx_info[0].rx); + else + bna_rx_vlan_strip_disable(bnad->rx_info[0].rx); + + spin_unlock_irqrestore(&bnad->bna_lock, flags); + } + + return 0; +} + +#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 { + /* + * Tx processing may happen in sending context, so no need + * to explicitly process completions here + */ + + /* Rx processing */ + 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); + } + } + } +} +#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_stats64 = bnad_get_stats64, + .ndo_set_rx_mode = 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_add_vid = bnad_vlan_rx_add_vid, + .ndo_vlan_rx_kill_vid = bnad_vlan_rx_kill_vid, + .ndo_set_features = bnad_set_features, +#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->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | + NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_HW_VLAN_CTAG_RX; + + netdev->vlan_features = NETIF_F_SG | NETIF_F_HIGHDMA | + NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_TSO | NETIF_F_TSO6; + + netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; + + if (using_dac) + netdev->features |= NETIF_F_HIGHDMA; + + netdev->mem_start = bnad->mmio_start; + netdev->mem_end = bnad->mmio_start + bnad->mmio_len - 1; + + /* MTU range: 46 - 9000 */ + netdev->min_mtu = ETH_ZLEN - ETH_HLEN; + netdev->max_mtu = BNAD_JUMBO_MTU; + + netdev->netdev_ops = &bnad_netdev_ops; + bnad_set_ethtool_ops(netdev); +} + +/* + * 1. Initialize the bnad structure + * 2. Setup netdev pointer in pci_dev + * 3. Initialize no. of TxQ & CQs & MSIX vectors + * 4. Initialize work queue. + */ +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"); + return -ENOMEM; + } + dev_info(&pdev->dev, "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->txq_depth = BNAD_TXQ_DEPTH; + bnad->rxq_depth = BNAD_RXQ_DEPTH; + + bnad->tx_coalescing_timeo = BFI_TX_COALESCING_TIMEO; + bnad->rx_coalescing_timeo = BFI_RX_COALESCING_TIMEO; + + sprintf(bnad->wq_name, "%s_wq_%d", BNAD_NAME, bnad->id); + bnad->work_q = create_singlethread_workqueue(bnad->wq_name); + if (!bnad->work_q) { + iounmap(bnad->bar0); + return -ENOMEM; + } + + 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->work_q) { + flush_workqueue(bnad->work_q); + destroy_workqueue(bnad->work_q); + bnad->work_q = NULL; + } + + if (bnad->bar0) + iounmap(bnad->bar0); +} + +/* + * Initialize locks + a) Per ioceth 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 (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) { + *using_dac = true; + } else { + err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (err) + goto release_regions; + *using_dac = false; + } + 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 +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; + + mutex_lock(&bnad_fwimg_mutex); + if (!cna_get_firmware_buf(pdev)) { + mutex_unlock(&bnad_fwimg_mutex); + dev_err(&pdev->dev, "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) { + err = -ENOMEM; + return err; + } + bnad = netdev_priv(netdev); + bnad_lock_init(bnad); + bnad->id = atomic_inc_return(&bna_id) - 1; + + mutex_lock(&bnad->conf_mutex); + /* + * PCI initialization + * Output : using_dac = 1 for 64 bit DMA + * = 0 for 32 bit DMA + */ + using_dac = false; + err = bnad_pci_init(bnad, pdev, &using_dac); + if (err) + goto unlock_mutex; + + /* + * Initialize bnad structure + * Setup relation between pci_dev & netdev + */ + err = bnad_init(bnad, pdev, netdev); + if (err) + goto pci_uninit; + + /* Initialize netdev structure, set up ethtool ops */ + bnad_netdev_init(bnad, using_dac); + + /* Set link to down state */ + netif_carrier_off(netdev); + + /* Setup the debugfs node for this bfad */ + if (bna_debugfs_enable) + bnad_debugfs_init(bnad); + + /* Get resource requirement form bna */ + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_res_req(&bnad->res_info[0]); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + /* Allocate resources from bna */ + err = bnad_res_alloc(bnad, &bnad->res_info[0], BNA_RES_T_MAX); + if (err) + goto drv_uninit; + + 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; + + 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; + + bnad_enable_msix(bnad); + err = bnad_mbox_irq_alloc(bnad); + if (err) + goto res_free; + + /* Set up timers */ + timer_setup(&bnad->bna.ioceth.ioc.ioc_timer, bnad_ioc_timeout, 0); + timer_setup(&bnad->bna.ioceth.ioc.hb_timer, bnad_ioc_hb_check, 0); + timer_setup(&bnad->bna.ioceth.ioc.iocpf_timer, bnad_iocpf_timeout, 0); + timer_setup(&bnad->bna.ioceth.ioc.sem_timer, bnad_iocpf_sem_timeout, + 0); + + /* + * Start the chip + * If the call back comes with error, we bail out. + * This is a catastrophic error. + */ + err = bnad_ioceth_enable(bnad); + if (err) { + dev_err(&pdev->dev, "initialization failed err=%d\n", err); + goto probe_success; + } + + spin_lock_irqsave(&bnad->bna_lock, flags); + if (bna_num_txq_set(bna, BNAD_NUM_TXQ + 1) || + bna_num_rxp_set(bna, BNAD_NUM_RXP + 1)) { + bnad_q_num_adjust(bnad, bna_attr(bna)->num_txq - 1, + bna_attr(bna)->num_rxp - 1); + if (bna_num_txq_set(bna, BNAD_NUM_TXQ + 1) || + bna_num_rxp_set(bna, BNAD_NUM_RXP + 1)) + err = -EIO; + } + spin_unlock_irqrestore(&bnad->bna_lock, flags); + if (err) + goto disable_ioceth; + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_mod_res_req(&bnad->bna, &bnad->mod_res_info[0]); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + err = bnad_res_alloc(bnad, &bnad->mod_res_info[0], BNA_MOD_RES_T_MAX); + if (err) { + err = -EIO; + goto disable_ioceth; + } + + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_mod_init(&bnad->bna, &bnad->mod_res_info[0]); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + /* Get the burnt-in mac */ + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_enet_perm_mac_get(&bna->enet, bnad->perm_addr); + bnad_set_netdev_perm_addr(bnad); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + mutex_unlock(&bnad->conf_mutex); + + /* Finally, reguister with net_device layer */ + err = register_netdev(netdev); + if (err) { + dev_err(&pdev->dev, "registering net device failed\n"); + goto probe_uninit; + } + set_bit(BNAD_RF_NETDEV_REGISTERED, &bnad->run_flags); + + return 0; + +probe_success: + mutex_unlock(&bnad->conf_mutex); + return 0; + +probe_uninit: + mutex_lock(&bnad->conf_mutex); + bnad_res_free(bnad, &bnad->mod_res_info[0], BNA_MOD_RES_T_MAX); +disable_ioceth: + bnad_ioceth_disable(bnad); + del_timer_sync(&bnad->bna.ioceth.ioc.ioc_timer); + del_timer_sync(&bnad->bna.ioceth.ioc.sem_timer); + del_timer_sync(&bnad->bna.ioceth.ioc.hb_timer); + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_uninit(bna); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + bnad_mbox_irq_free(bnad); + bnad_disable_msix(bnad); +res_free: + bnad_res_free(bnad, &bnad->res_info[0], BNA_RES_T_MAX); +drv_uninit: + /* Remove the debugfs node for this bnad */ + kfree(bnad->regdata); + bnad_debugfs_uninit(bnad); + bnad_uninit(bnad); +pci_uninit: + bnad_pci_uninit(pdev); +unlock_mutex: + mutex_unlock(&bnad->conf_mutex); + bnad_lock_uninit(bnad); + free_netdev(netdev); + return err; +} + +static void +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; + + bnad = netdev_priv(netdev); + bna = &bnad->bna; + + if (test_and_clear_bit(BNAD_RF_NETDEV_REGISTERED, &bnad->run_flags)) + unregister_netdev(netdev); + + mutex_lock(&bnad->conf_mutex); + bnad_ioceth_disable(bnad); + del_timer_sync(&bnad->bna.ioceth.ioc.ioc_timer); + del_timer_sync(&bnad->bna.ioceth.ioc.sem_timer); + del_timer_sync(&bnad->bna.ioceth.ioc.hb_timer); + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_uninit(bna); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + + bnad_res_free(bnad, &bnad->mod_res_info[0], BNA_MOD_RES_T_MAX); + bnad_res_free(bnad, &bnad->res_info[0], BNA_RES_T_MAX); + bnad_mbox_irq_free(bnad); + bnad_disable_msix(bnad); + bnad_pci_uninit(pdev); + mutex_unlock(&bnad->conf_mutex); + bnad_lock_uninit(bnad); + /* Remove the debugfs node for this bnad */ + kfree(bnad->regdata); + bnad_debugfs_uninit(bnad); + bnad_uninit(bnad); + free_netdev(netdev); +} + +static 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 + }, + { + PCI_DEVICE(PCI_VENDOR_ID_BROCADE, + BFA_PCI_DEVICE_ID_CT2), + .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 = bnad_pci_remove, +}; + +static int __init +bnad_module_init(void) +{ + int err; + + pr_info("bna: QLogic BR-series 10G Ethernet driver - version: %s\n", + BNAD_VERSION); + + bfa_nw_ioc_auto_recover(bnad_ioc_auto_recover); + + err = pci_register_driver(&bnad_pci_driver); + if (err < 0) { + pr_err("bna: PCI driver registration failed err=%d\n", err); + return err; + } + + return 0; +} + +static void __exit +bnad_module_exit(void) +{ + pci_unregister_driver(&bnad_pci_driver); + release_firmware(bfi_fw); +} + +module_init(bnad_module_init); +module_exit(bnad_module_exit); + +MODULE_AUTHOR("Brocade"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("QLogic BR-series 10G PCIe Ethernet driver"); +MODULE_VERSION(BNAD_VERSION); +MODULE_FIRMWARE(CNA_FW_FILE_CT); +MODULE_FIRMWARE(CNA_FW_FILE_CT2); |