diff options
| -rw-r--r-- | drivers/net/bnx2x/Makefile | 2 | ||||
| -rw-r--r-- | drivers/net/bnx2x/bnx2x.h | 1 | ||||
| -rw-r--r-- | drivers/net/bnx2x/bnx2x_cmn.c | 2251 | ||||
| -rw-r--r-- | drivers/net/bnx2x/bnx2x_cmn.h | 652 | ||||
| -rw-r--r-- | drivers/net/bnx2x/bnx2x_main.c | 2637 |
5 files changed, 2943 insertions, 2600 deletions
diff --git a/drivers/net/bnx2x/Makefile b/drivers/net/bnx2x/Makefile index 46c853b6cc53..ef4eebb38663 100644 --- a/drivers/net/bnx2x/Makefile +++ b/drivers/net/bnx2x/Makefile @@ -4,4 +4,4 @@ obj-$(CONFIG_BNX2X) += bnx2x.o -bnx2x-objs := bnx2x_main.o bnx2x_link.o +bnx2x-objs := bnx2x_main.o bnx2x_link.o bnx2x_cmn.o diff --git a/drivers/net/bnx2x/bnx2x.h b/drivers/net/bnx2x/bnx2x.h index 4afd29201a5c..260507032d39 100644 --- a/drivers/net/bnx2x/bnx2x.h +++ b/drivers/net/bnx2x/bnx2x.h @@ -45,6 +45,7 @@ #endif #include <linux/mdio.h> +#include <linux/pci.h> #include "bnx2x_reg.h" #include "bnx2x_fw_defs.h" #include "bnx2x_hsi.h" diff --git a/drivers/net/bnx2x/bnx2x_cmn.c b/drivers/net/bnx2x/bnx2x_cmn.c new file mode 100644 index 000000000000..30d20c7fee0b --- /dev/null +++ b/drivers/net/bnx2x/bnx2x_cmn.c @@ -0,0 +1,2251 @@ +/* bnx2x_cmn.c: Broadcom Everest network driver. + * + * Copyright (c) 2007-2010 Broadcom Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation. + * + * Maintained by: Eilon Greenstein <eilong@broadcom.com> + * Written by: Eliezer Tamir + * Based on code from Michael Chan's bnx2 driver + * UDP CSUM errata workaround by Arik Gendelman + * Slowpath and fastpath rework by Vladislav Zolotarov + * Statistics and Link management by Yitchak Gertner + * + */ + + +#include <linux/etherdevice.h> +#include <linux/ip.h> +#include <linux/ipv6.h> +#include "bnx2x_cmn.h" + +#ifdef BCM_VLAN +#include <linux/if_vlan.h> +#endif + +static int bnx2x_poll(struct napi_struct *napi, int budget); + +/* free skb in the packet ring at pos idx + * return idx of last bd freed + */ +static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp, + u16 idx) +{ + struct sw_tx_bd *tx_buf = &fp->tx_buf_ring[idx]; + struct eth_tx_start_bd *tx_start_bd; + struct eth_tx_bd *tx_data_bd; + struct sk_buff *skb = tx_buf->skb; + u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons; + int nbd; + + /* prefetch skb end pointer to speedup dev_kfree_skb() */ + prefetch(&skb->end); + + DP(BNX2X_MSG_OFF, "pkt_idx %d buff @(%p)->skb %p\n", + idx, tx_buf, skb); + + /* unmap first bd */ + DP(BNX2X_MSG_OFF, "free bd_idx %d\n", bd_idx); + tx_start_bd = &fp->tx_desc_ring[bd_idx].start_bd; + dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd), + BD_UNMAP_LEN(tx_start_bd), PCI_DMA_TODEVICE); + + nbd = le16_to_cpu(tx_start_bd->nbd) - 1; +#ifdef BNX2X_STOP_ON_ERROR + if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) { + BNX2X_ERR("BAD nbd!\n"); + bnx2x_panic(); + } +#endif + new_cons = nbd + tx_buf->first_bd; + + /* Get the next bd */ + bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); + + /* Skip a parse bd... */ + --nbd; + bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); + + /* ...and the TSO split header bd since they have no mapping */ + if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) { + --nbd; + bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); + } + + /* now free frags */ + while (nbd > 0) { + + DP(BNX2X_MSG_OFF, "free frag bd_idx %d\n", bd_idx); + tx_data_bd = &fp->tx_desc_ring[bd_idx].reg_bd; + dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd), + BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE); + if (--nbd) + bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); + } + + /* release skb */ + WARN_ON(!skb); + dev_kfree_skb(skb); + tx_buf->first_bd = 0; + tx_buf->skb = NULL; + + return new_cons; +} + +int bnx2x_tx_int(struct bnx2x_fastpath *fp) +{ + struct bnx2x *bp = fp->bp; + struct netdev_queue *txq; + u16 hw_cons, sw_cons, bd_cons = fp->tx_bd_cons; + +#ifdef BNX2X_STOP_ON_ERROR + if (unlikely(bp->panic)) + return -1; +#endif + + txq = netdev_get_tx_queue(bp->dev, fp->index); + hw_cons = le16_to_cpu(*fp->tx_cons_sb); + sw_cons = fp->tx_pkt_cons; + + while (sw_cons != hw_cons) { + u16 pkt_cons; + + pkt_cons = TX_BD(sw_cons); + + /* prefetch(bp->tx_buf_ring[pkt_cons].skb); */ + + DP(NETIF_MSG_TX_DONE, "hw_cons %u sw_cons %u pkt_cons %u\n", + hw_cons, sw_cons, pkt_cons); + +/* if (NEXT_TX_IDX(sw_cons) != hw_cons) { + rmb(); + prefetch(fp->tx_buf_ring[NEXT_TX_IDX(sw_cons)].skb); + } +*/ + bd_cons = bnx2x_free_tx_pkt(bp, fp, pkt_cons); + sw_cons++; + } + + fp->tx_pkt_cons = sw_cons; + fp->tx_bd_cons = bd_cons; + + /* Need to make the tx_bd_cons update visible to start_xmit() + * before checking for netif_tx_queue_stopped(). Without the + * memory barrier, there is a small possibility that + * start_xmit() will miss it and cause the queue to be stopped + * forever. + */ + smp_mb(); + + /* TBD need a thresh? */ + if (unlikely(netif_tx_queue_stopped(txq))) { + /* Taking tx_lock() is needed to prevent reenabling the queue + * while it's empty. This could have happen if rx_action() gets + * suspended in bnx2x_tx_int() after the condition before + * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()): + * + * stops the queue->sees fresh tx_bd_cons->releases the queue-> + * sends some packets consuming the whole queue again-> + * stops the queue + */ + + __netif_tx_lock(txq, smp_processor_id()); + + if ((netif_tx_queue_stopped(txq)) && + (bp->state == BNX2X_STATE_OPEN) && + (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3)) + netif_tx_wake_queue(txq); + + __netif_tx_unlock(txq); + } + return 0; +} + +static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp, + u16 idx) +{ + u16 last_max = fp->last_max_sge; + + if (SUB_S16(idx, last_max) > 0) + fp->last_max_sge = idx; +} + +static void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp, + struct eth_fast_path_rx_cqe *fp_cqe) +{ + struct bnx2x *bp = fp->bp; + u16 sge_len = SGE_PAGE_ALIGN(le16_to_cpu(fp_cqe->pkt_len) - + le16_to_cpu(fp_cqe->len_on_bd)) >> + SGE_PAGE_SHIFT; + u16 last_max, last_elem, first_elem; + u16 delta = 0; + u16 i; + + if (!sge_len) + return; + + /* First mark all used pages */ + for (i = 0; i < sge_len; i++) + SGE_MASK_CLEAR_BIT(fp, RX_SGE(le16_to_cpu(fp_cqe->sgl[i]))); + + DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n", + sge_len - 1, le16_to_cpu(fp_cqe->sgl[sge_len - 1])); + + /* Here we assume that the last SGE index is the biggest */ + prefetch((void *)(fp->sge_mask)); + bnx2x_update_last_max_sge(fp, le16_to_cpu(fp_cqe->sgl[sge_len - 1])); + + last_max = RX_SGE(fp->last_max_sge); + last_elem = last_max >> RX_SGE_MASK_ELEM_SHIFT; + first_elem = RX_SGE(fp->rx_sge_prod) >> RX_SGE_MASK_ELEM_SHIFT; + + /* If ring is not full */ + if (last_elem + 1 != first_elem) + last_elem++; + + /* Now update the prod */ + for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) { + if (likely(fp->sge_mask[i])) + break; + + fp->sge_mask[i] = RX_SGE_MASK_ELEM_ONE_MASK; + delta += RX_SGE_MASK_ELEM_SZ; + } + + if (delta > 0) { + fp->rx_sge_prod += delta; + /* clear page-end entries */ + bnx2x_clear_sge_mask_next_elems(fp); + } + + DP(NETIF_MSG_RX_STATUS, + "fp->last_max_sge = %d fp->rx_sge_prod = %d\n", + fp->last_max_sge, fp->rx_sge_prod); +} + +static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue, + struct sk_buff *skb, u16 cons, u16 prod) +{ + struct bnx2x *bp = fp->bp; + struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons]; + struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod]; + struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod]; + dma_addr_t mapping; + + /* move empty skb from pool to prod and map it */ + prod_rx_buf->skb = fp->tpa_pool[queue].skb; + mapping = dma_map_single(&bp->pdev->dev, fp->tpa_pool[queue].skb->data, + bp->rx_buf_size, DMA_FROM_DEVICE); + dma_unmap_addr_set(prod_rx_buf, mapping, mapping); + + /* move partial skb from cons to pool (don't unmap yet) */ + fp->tpa_pool[queue] = *cons_rx_buf; + + /* mark bin state as start - print error if current state != stop */ + if (fp->tpa_state[queue] != BNX2X_TPA_STOP) + BNX2X_ERR("start of bin not in stop [%d]\n", queue); + + fp->tpa_state[queue] = BNX2X_TPA_START; + + /* point prod_bd to new skb */ + prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); + prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); + +#ifdef BNX2X_STOP_ON_ERROR + fp->tpa_queue_used |= (1 << queue); +#ifdef _ASM_GENERIC_INT_L64_H + DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%lx\n", +#else + DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n", +#endif + fp->tpa_queue_used); +#endif +} + +static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp, + struct sk_buff *skb, + struct eth_fast_path_rx_cqe *fp_cqe, + u16 cqe_idx) +{ + struct sw_rx_page *rx_pg, old_rx_pg; + u16 len_on_bd = le16_to_cpu(fp_cqe->len_on_bd); + u32 i, frag_len, frag_size, pages; + int err; + int j; + + frag_size = le16_to_cpu(fp_cqe->pkt_len) - len_on_bd; + pages = SGE_PAGE_ALIGN(frag_size) >> SGE_PAGE_SHIFT; + + /* This is needed in order to enable forwarding support */ + if (frag_size) + skb_shinfo(skb)->gso_size = min((u32)SGE_PAGE_SIZE, + max(frag_size, (u32)len_on_bd)); + +#ifdef BNX2X_STOP_ON_ERROR + if (pages > min_t(u32, 8, MAX_SKB_FRAGS)*SGE_PAGE_SIZE*PAGES_PER_SGE) { + BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n", + pages, cqe_idx); + BNX2X_ERR("fp_cqe->pkt_len = %d fp_cqe->len_on_bd = %d\n", + fp_cqe->pkt_len, len_on_bd); + bnx2x_panic(); + return -EINVAL; + } +#endif + + /* Run through the SGL and compose the fragmented skb */ + for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) { + u16 sge_idx = RX_SGE(le16_to_cpu(fp_cqe->sgl[j])); + + /* FW gives the indices of the SGE as if the ring is an array + (meaning that "next" element will consume 2 indices) */ + frag_len = min(frag_size, (u32)(SGE_PAGE_SIZE*PAGES_PER_SGE)); + rx_pg = &fp->rx_page_ring[sge_idx]; + old_rx_pg = *rx_pg; + + /* If we fail to allocate a substitute page, we simply stop + where we are and drop the whole packet */ + err = bnx2x_alloc_rx_sge(bp, fp, sge_idx); + if (unlikely(err)) { + fp->eth_q_stats.rx_skb_alloc_failed++; + return err; + } + + /* Unmap the page as we r going to pass it to the stack */ + dma_unmap_page(&bp->pdev->dev, + dma_unmap_addr(&old_rx_pg, mapping), + SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE); + + /* Add one frag and update the appropriate fields in the skb */ + skb_fill_page_desc(skb, j, old_rx_pg.page, 0, frag_len); + + skb->data_len += frag_len; + skb->truesize += frag_len; + skb->len += frag_len; + + frag_size -= frag_len; + } + + return 0; +} + +static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp, + u16 queue, int pad, int len, union eth_rx_cqe *cqe, + u16 cqe_idx) +{ + struct sw_rx_bd *rx_buf = &fp->tpa_pool[queue]; + struct sk_buff *skb = rx_buf->skb; + /* alloc new skb */ + struct sk_buff *new_skb = netdev_alloc_skb(bp->dev, bp->rx_buf_size); + + /* Unmap skb in the pool anyway, as we are going to change + pool entry status to BNX2X_TPA_STOP even if new skb allocation + fails. */ + dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping), + bp->rx_buf_size, DMA_FROM_DEVICE); + + if (likely(new_skb)) { + /* fix ip xsum and give it to the stack */ + /* (no need to map the new skb) */ +#ifdef BCM_VLAN + int is_vlan_cqe = + (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) & + PARSING_FLAGS_VLAN); + int is_not_hwaccel_vlan_cqe = + (is_vlan_cqe && (!(bp->flags & HW_VLAN_RX_FLAG))); +#endif + + prefetch(skb); + prefetch(((char *)(skb)) + 128); + +#ifdef BNX2X_STOP_ON_ERROR + if (pad + len > bp->rx_buf_size) { + BNX2X_ERR("skb_put is about to fail... " + "pad %d len %d rx_buf_size %d\n", + pad, len, bp->rx_buf_size); + bnx2x_panic(); + return; + } +#endif + + skb_reserve(skb, pad); + skb_put(skb, len); + + skb->protocol = eth_type_trans(skb, bp->dev); + skb->ip_summed = CHECKSUM_UNNECESSARY; + + { + struct iphdr *iph; + + iph = (struct iphdr *)skb->data; +#ifdef BCM_VLAN + /* If there is no Rx VLAN offloading - + take VLAN tag into an account */ + if (unlikely(is_not_hwaccel_vlan_cqe)) + iph = (struct iphdr *)((u8 *)iph + VLAN_HLEN); +#endif + iph->check = 0; + iph->check = ip_fast_csum((u8 *)iph, iph->ihl); + } + + if (!bnx2x_fill_frag_skb(bp, fp, skb, + &cqe->fast_path_cqe, cqe_idx)) { +#ifdef BCM_VLAN + if ((bp->vlgrp != NULL) && is_vlan_cqe && + (!is_not_hwaccel_vlan_cqe)) + vlan_gro_receive(&fp->napi, bp->vlgrp, + le16_to_cpu(cqe->fast_path_cqe. + vlan_tag), skb); + else +#endif + napi_gro_receive(&fp->napi, skb); + } else { + DP(NETIF_MSG_RX_STATUS, "Failed to allocate new pages" + " - dropping packet!\n"); + dev_kfree_skb(skb); + } + + + /* put new skb in bin */ + fp->tpa_pool[queue].skb = new_skb; + + } else { + /* else drop the packet and keep the buffer in the bin */ + DP(NETIF_MSG_RX_STATUS, + "Failed to allocate new skb - dropping packet!\n"); + fp->eth_q_stats.rx_skb_alloc_failed++; + } + + fp->tpa_state[queue] = BNX2X_TPA_STOP; +} + +/* Set Toeplitz hash value in the skb using the value from the + * CQE (calculated by HW). + */ +static inline void bnx2x_set_skb_rxhash(struct bnx2x *bp, union eth_rx_cqe *cqe, + struct sk_buff *skb) +{ + /* Set Toeplitz hash from CQE */ + if ((bp->dev->features & NETIF_F_RXHASH) && + (cqe->fast_path_cqe.status_flags & + ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG)) + skb->rxhash = + le32_to_cpu(cqe->fast_path_cqe.rss_hash_result); +} + +int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget) +{ + struct bnx2x *bp = fp->bp; + u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons; + u16 hw_comp_cons, sw_comp_cons, sw_comp_prod; + int rx_pkt = 0; + +#ifdef BNX2X_STOP_ON_ERROR + if (unlikely(bp->panic)) + return 0; +#endif + + /* CQ "next element" is of the size of the regular element, + that's why it's ok here */ + hw_comp_cons = le16_to_cpu(*fp->rx_cons_sb); + if ((hw_comp_cons & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT) + hw_comp_cons++; + + bd_cons = fp->rx_bd_cons; + bd_prod = fp->rx_bd_prod; + bd_prod_fw = bd_prod; + sw_comp_cons = fp->rx_comp_cons; + sw_comp_prod = fp->rx_comp_prod; + + /* Memory barrier necessary as speculative reads of the rx + * buffer can be ahead of the index in the status block + */ + rmb(); + + DP(NETIF_MSG_RX_STATUS, + "queue[%d]: hw_comp_cons %u sw_comp_cons %u\n", + fp->index, hw_comp_cons, sw_comp_cons); + + while (sw_comp_cons != hw_comp_cons) { + struct sw_rx_bd *rx_buf = NULL; + struct sk_buff *skb; + union eth_rx_cqe *cqe; + u8 cqe_fp_flags; + u16 len, pad; + + comp_ring_cons = RCQ_BD(sw_comp_cons); + bd_prod = RX_BD(bd_prod); + bd_cons = RX_BD(bd_cons); + + /* Prefetch the page containing the BD descriptor + at producer's index. It will be needed when new skb is + allocated */ + prefetch((void *)(PAGE_ALIGN((unsigned long) + (&fp->rx_desc_ring[bd_prod])) - + PAGE_SIZE + 1)); + + cqe = &fp->rx_comp_ring[comp_ring_cons]; + cqe_fp_flags = cqe->fast_path_cqe.type_error_flags; + + DP(NETIF_MSG_RX_STATUS, "CQE type %x err %x status %x" + " queue %x vlan %x len %u\n", CQE_TYPE(cqe_fp_flags), + cqe_fp_flags, cqe->fast_path_cqe.status_flags, + le32_to_cpu(cqe->fast_path_cqe.rss_hash_result), + le16_to_cpu(cqe->fast_path_cqe.vlan_tag), + le16_to_cpu(cqe->fast_path_cqe.pkt_len)); + + /* is this a slowpath msg? */ + if (unlikely(CQE_TYPE(cqe_fp_flags))) { + bnx2x_sp_event(fp, cqe); + goto next_cqe; + + /* this is an rx packet */ + } else { + rx_buf = &fp->rx_buf_ring[bd_cons]; + skb = rx_buf->skb; + prefetch(skb); + len = le16_to_cpu(cqe->fast_path_cqe.pkt_len); + pad = cqe->fast_path_cqe.placement_offset; + + /* If CQE is marked both TPA_START and TPA_END + it is a non-TPA CQE */ + if ((!fp->disable_tpa) && + (TPA_TYPE(cqe_fp_flags) != + (TPA_TYPE_START | TPA_TYPE_END))) { + u16 queue = cqe->fast_path_cqe.queue_index; + + if (TPA_TYPE(cqe_fp_flags) == TPA_TYPE_START) { + DP(NETIF_MSG_RX_STATUS, + "calling tpa_start on queue %d\n", + queue); + + bnx2x_tpa_start(fp, queue, skb, + bd_cons, bd_prod); + + /* Set Toeplitz hash for an LRO skb */ + bnx2x_set_skb_rxhash(bp, cqe, skb); + + goto next_rx; + } + + if (TPA_TYPE(cqe_fp_flags) == TPA_TYPE_END) { + DP(NETIF_MSG_RX_STATUS, + "calling tpa_stop on queue %d\n", + queue); + + if (!BNX2X_RX_SUM_FIX(cqe)) + BNX2X_ERR("STOP on none TCP " + "data\n"); + + /* This is a size of the linear data + on this skb */ + len = le16_to_cpu(cqe->fast_path_cqe. + len_on_bd); + bnx2x_tpa_stop(bp, fp, queue, pad, + len, cqe, comp_ring_cons); +#ifdef BNX2X_STOP_ON_ERROR + if (bp->panic) + return 0; +#endif + + bnx2x_update_sge_prod(fp, + &cqe->fast_path_cqe); + goto next_cqe; + } + } + + dma_sync_single_for_device(&bp->pdev->dev, + dma_unmap_addr(rx_buf, mapping), + pad + RX_COPY_THRESH, + DMA_FROM_DEVICE); + prefetch(((char *)(skb)) + 128); + + /* is this an error packet? */ + if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) { + DP(NETIF_MSG_RX_ERR, + "ERROR flags %x rx packet %u\n", + cqe_fp_flags, sw_comp_cons); + fp->eth_q_stats.rx_err_discard_pkt++; + goto reuse_rx; + } + + /* Since we don't have a jumbo ring + * copy small packets if mtu > 1500 + */ + if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) && + (len <= RX_COPY_THRESH)) { + struct sk_buff *new_skb; + + new_skb = netdev_alloc_skb(bp->dev, + len + pad); + if (new_skb == NULL) { + DP(NETIF_MSG_RX_ERR, + "ERROR packet dropped " + "because of alloc failure\n"); + fp->eth_q_stats.rx_skb_alloc_failed++; + goto reuse_rx; + } + + /* aligned copy */ + skb_copy_from_linear_data_offset(skb, pad, + new_skb->data + pad, len); + skb_reserve(new_skb, pad); + skb_put(new_skb, len); + + bnx2x_reuse_rx_skb(fp, skb, bd_cons, bd_prod); + + skb = new_skb; + + } else + if (likely(bnx2x_alloc_rx_skb(bp, fp, bd_prod) == 0)) { + dma_unmap_single(&bp->pdev->dev, + dma_unmap_addr(rx_buf, mapping), + bp->rx_buf_size, + DMA_FROM_DEVICE); + skb_reserve(skb, pad); + skb_put(skb, len); + + } else { + DP(NETIF_MSG_RX_ERR, + "ERROR packet dropped because " + "of alloc failure\n"); + fp->eth_q_stats.rx_skb_alloc_failed++; +reuse_rx: + bnx2x_reuse_rx_skb(fp, skb, bd_cons, bd_prod); + goto next_rx; + } + + skb->protocol = eth_type_trans(skb, bp->dev); + + /* Set Toeplitz hash for a none-LRO skb */ + bnx2x_set_skb_rxhash(bp, cqe, skb); + + skb->ip_summed = CHECKSUM_NONE; + if (bp->rx_csum) { + if (likely(BNX2X_RX_CSUM_OK(cqe))) + skb->ip_summed = CHECKSUM_UNNECESSARY; + else + fp->eth_q_stats.hw_csum_err++; + } + } + + skb_record_rx_queue(skb, fp->index); + +#ifdef BCM_VLAN + if ((bp->vlgrp != NULL) && (bp->flags & HW_VLAN_RX_FLAG) && + (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) & + PARSING_FLAGS_VLAN)) + vlan_gro_receive(&fp->napi, bp->vlgrp, + le16_to_cpu(cqe->fast_path_cqe.vlan_tag), skb); + else +#endif + napi_gro_receive(&fp->napi, skb); + + +next_rx: + rx_buf->skb = NULL; + + bd_cons = NEXT_RX_IDX(bd_cons); + bd_prod = NEXT_RX_IDX(bd_prod); + bd_prod_fw = NEXT_RX_IDX(bd_prod_fw); + rx_pkt++; +next_cqe: + sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod); + sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons); + + if (rx_pkt == budget) + break; + } /* while */ + + fp->rx_bd_cons = bd_cons; + fp->rx_bd_prod = bd_prod_fw; + fp->rx_comp_cons = sw_comp_cons; + fp->rx_comp_prod = sw_comp_prod; + + /* Update producers */ + bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod, + fp->rx_sge_prod); + + fp->rx_pkt += rx_pkt; + fp->rx_calls++; + + return rx_pkt; +} + +static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie) +{ + struct bnx2x_fastpath *fp = fp_cookie; + struct bnx2x *bp = fp->bp; + + /* Return here if interrupt is disabled */ + if (unlikely(atomic_read(&bp->intr_sem) != 0)) { + DP(NETIF_MSG_INTR, "called but intr_sem not 0, returning\n"); + return IRQ_HANDLED; + } + + DP(BNX2X_MSG_FP, "got an MSI-X interrupt on IDX:SB [%d:%d]\n", + fp->index, fp->sb_id); + bnx2x_ack_sb(bp, fp->sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0); + +#ifdef BNX2X_STOP_ON_ERROR + if (unlikely(bp->panic)) + return IRQ_HANDLED; +#endif + + /* Handle Rx and Tx according to MSI-X vector */ + prefetch(fp->rx_cons_sb); + prefetch(fp->tx_cons_sb); + prefetch(&fp->status_blk->u_status_block.status_block_index); + prefetch(&fp->status_blk->c_status_block.status_block_index); + napi_schedule(&bnx2x_fp(bp, fp->index, napi)); + + return IRQ_HANDLED; +} + + +/* HW Lock for shared dual port PHYs */ +void bnx2x_acquire_phy_lock(struct bnx2x *bp) +{ + mutex_lock(&bp->port.phy_mutex); + + if (bp->port.need_hw_lock) + bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO); +} + +void bnx2x_release_phy_lock(struct bnx2x *bp) +{ + if (bp->port.need_hw_lock) + bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO); + + mutex_unlock(&bp->port.phy_mutex); +} + +void bnx2x_link_report(struct bnx2x *bp) +{ + if (bp->flags & MF_FUNC_DIS) { + netif_carrier_off(bp->dev); + netdev_err(bp->dev, "NIC Link is Down\n"); + return; + } + + if (bp->link_vars.link_up) { + u16 line_speed; + + if (bp->state == BNX2X_STATE_OPEN) + netif_carrier_on(bp->dev); + netdev_info(bp->dev, "NIC Link is Up, "); + + line_speed = bp->link_vars.line_speed; + if (IS_E1HMF(bp)) { + u16 vn_max_rate; + + vn_max_rate = + ((bp->mf_config & FUNC_MF_CFG_MAX_BW_MASK) >> + FUNC_MF_CFG_MAX_BW_SHIFT) * 100; + if (vn_max_rate < line_speed) + line_speed = vn_max_rate; + } + pr_cont("%d Mbps ", line_speed); + + if (bp->link_vars.duplex == DUPLEX_FULL) + pr_cont("full duplex"); + else + pr_cont("half duplex"); + + if (bp->link_vars.flow_ctrl != BNX2X_FLOW_CTRL_NONE) { + if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX) { + pr_cont(", receive "); + if (bp->link_vars.flow_ctrl & + BNX2X_FLOW_CTRL_TX) + pr_cont("& transmit "); + } else { + pr_cont(", transmit "); + } + pr_cont("flow control ON"); + } + pr_cont("\n"); + + } else { /* link_down */ + netif_carrier_off(bp->dev); + netdev_err(bp->dev, "NIC Link is Down\n"); + } +} + +void bnx2x_init_rx_rings(struct bnx2x *bp) +{ + int func = BP_FUNC(bp); + int max_agg_queues = CHIP_IS_E1(bp) ? ETH_MAX_AGGREGATION_QUEUES_E1 : + ETH_MAX_AGGREGATION_QUEUES_E1H; + u16 ring_prod, cqe_ring_prod; + int i, j; + + bp->rx_buf_size = bp->dev->mtu + ETH_OVREHEAD + BNX2X_RX_ALIGN; + DP(NETIF_MSG_IFUP, + "mtu %d rx_buf_size %d\n", bp->dev->mtu, bp->rx_buf_size); + + if (bp->flags & TPA_ENABLE_FLAG) { + + for_each_queue(bp, j) { + struct bnx2x_fastpath *fp = &bp->fp[j]; + + for (i = 0; i < max_agg_queues; i++) { + fp->tpa_pool[i].skb = + netdev_alloc_skb(bp->dev, bp->rx_buf_size); + if (!fp->tpa_pool[i].skb) { + BNX2X_ERR("Failed to allocate TPA " + "skb pool for queue[%d] - " + "disabling TPA on this " + "queue!\n", j); + bnx2x_free_tpa_pool(bp, fp, i); + fp->disable_tpa = 1; + break; + } + dma_unmap_addr_set((struct sw_rx_bd *) + &bp->fp->tpa_pool[i], + mapping, 0); + fp->tpa_state[i] = BNX2X_TPA_STOP; + } + } + } + + for_each_queue(bp, j) { + struct bnx2x_fastpath *fp = &bp->fp[j]; + + fp->rx_bd_cons = 0; + fp->rx_cons_sb = BNX2X_RX_SB_INDEX; + fp->rx_bd_cons_sb = BNX2X_RX_SB_BD_INDEX; + + /* "next page" elements initialization */ + /* SGE ring */ + for (i = 1; i <= NUM_RX_SGE_PAGES; i++) { + struct eth_rx_sge *sge; + + sge = &fp->rx_sge_ring[RX_SGE_CNT * i - 2]; + sge->addr_hi = + cpu_to_le32(U64_HI(fp->rx_sge_mapping + + BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES))); + sge->addr_lo = + cpu_to_le32(U64_LO(fp->rx_sge_mapping + + BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES))); + } + + bnx2x_init_sge_ring_bit_mask(fp); + + /* RX BD ring */ + for (i = 1; i <= NUM_RX_RINGS; i++) { + struct eth_rx_bd *rx_bd; + + rx_bd = &fp->rx_desc_ring[RX_DESC_CNT * i - 2]; + rx_bd->addr_hi = + cpu_to_le32(U64_HI(fp->rx_desc_mapping + + BCM_PAGE_SIZE*(i % NUM_RX_RINGS))); + rx_bd->addr_lo = + cpu_to_le32(U64_LO(fp->rx_desc_mapping + + BCM_PAGE_SIZE*(i % NUM_RX_RINGS))); + } + + /* CQ ring */ + for (i = 1; i <= NUM_RCQ_RINGS; i++) { + struct eth_rx_cqe_next_page *nextpg; + + nextpg = (struct eth_rx_cqe_next_page *) + &fp->rx_comp_ring[RCQ_DESC_CNT * i - 1]; + nextpg->addr_hi = + cpu_to_le32(U64_HI(fp->rx_comp_mapping + + BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS))); + nextpg->addr_lo = + cpu_to_le32(U64_LO(fp->rx_comp_mapping + + BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS))); + } + + /* Allocate SGEs and initialize the ring elements */ + for (i = 0, ring_prod = 0; + i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) { + + if (bnx2x_alloc_rx_sge(bp, fp, ring_prod) < 0) { + BNX2X_ERR("was only able to allocate " + "%d rx sges\n", i); + BNX2X_ERR("disabling TPA for queue[%d]\n", j); + /* Cleanup already allocated elements */ + bnx2x_free_rx_sge_range(bp, fp, ring_prod); + bnx2x_free_tpa_pool(bp, fp, max_agg_queues); + fp->disable_tpa = 1; + ring_prod = 0; + break; + } + ring_prod = NEXT_SGE_IDX(ring_prod); + } + fp->rx_sge_prod = ring_prod; + + /* Allocate BDs and initialize BD ring */ + fp->rx_comp_cons = 0; + cqe_ring_prod = ring_prod = 0; + for (i = 0; i < bp->rx_ring_size; i++) { + if (bnx2x_alloc_rx_skb(bp, fp, ring_prod) < 0) { + BNX2X_ERR("was only able to allocate " + "%d rx skbs on queue[%d]\n", i, j); + fp->eth_q_stats.rx_skb_alloc_failed++; + break; + } + ring_prod = NEXT_RX_IDX(ring_prod); + cqe_ring_prod = NEXT_RCQ_IDX(cqe_ring_prod); + WARN_ON(ring_prod <= i); + } + + fp->rx_bd_prod = ring_prod; + /* must not have more available CQEs than BDs */ + fp->rx_comp_prod = min_t(u16, NUM_RCQ_RINGS*RCQ_DESC_CNT, + cqe_ring_prod); + fp->rx_pkt = fp->rx_calls = 0; + + /* Warning! + * this will generate an interrupt (to the TSTORM) + * must only be done after chip is initialized + */ + bnx2x_update_rx_prod(bp, fp, ring_prod, fp->rx_comp_prod, + fp->rx_sge_prod); + if (j != 0) + continue; + + REG_WR(bp, BAR_USTRORM_INTMEM + + USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func), + U64_LO(fp->rx_comp_mapping)); + REG_WR(bp, BAR_USTRORM_INTMEM + + USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4, + U64_HI(fp->rx_comp_mapping)); + } +} +static void bnx2x_free_tx_skbs(struct bnx2x *bp) +{ + int i; + + for_each_queue(bp, i) { + struct bnx2x_fastpath *fp = &bp->fp[i]; + + u16 bd_cons = fp->tx_bd_cons; + u16 sw_prod = fp->tx_pkt_prod; + u16 sw_cons = fp->tx_pkt_cons; + + while (sw_cons != sw_prod) { + bd_cons = bnx2x_free_tx_pkt(bp, fp, TX_BD(sw_cons)); + sw_cons++; + } + } +} + +static void bnx2x_free_rx_skbs(struct bnx2x *bp) +{ + int i, j; + + for_each_queue(bp, j) { + struct bnx2x_fastpath *fp = &bp->fp[j]; + + for (i = 0; i < NUM_RX_BD; i++) { + struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i]; + struct sk_buff *skb = rx_buf->skb; + + if (skb == NULL) + continue; + + dma_unmap_single(&bp->pdev->dev, + dma_unmap_addr(rx_buf, mapping), + bp->rx_buf_size, DMA_FROM_DEVICE); + + rx_buf->skb = NULL; + dev_kfree_skb(skb); + } + if (!fp->disable_tpa) + bnx2x_free_tpa_pool(bp, fp, CHIP_IS_E1(bp) ? + ETH_MAX_AGGREGATION_QUEUES_E1 : + ETH_MAX_AGGREGATION_QUEUES_E1H); + } +} + +void bnx2x_free_skbs(struct bnx2x *bp) +{ + bnx2x_free_tx_skbs(bp); + bnx2x_free_rx_skbs(bp); +} + +static void bnx2x_free_msix_irqs(struct bnx2x *bp) +{ + int i, offset = 1; + + free_irq(bp->msix_table[0].vector, bp->dev); + DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n", + bp->msix_table[0].vector); + +#ifdef BCM_CNIC + offset++; +#endif + for_each_queue(bp, i) { + DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d irq " + "state %x\n", i, bp->msix_table[i + offset].vector, + bnx2x_fp(bp, i, state)); + + free_irq(bp->msix_table[i + offset].vector, &bp->fp[i]); + } +} + +void bnx2x_free_irq(struct bnx2x *bp, bool disable_only) +{ + if (bp->flags & USING_MSIX_FLAG) { + if (!disable_only) + bnx2x_free_msix_irqs(bp); + pci_disable_msix(bp->pdev); + bp->flags &= ~USING_MSIX_FLAG; + + } else if (bp->flags & USING_MSI_FLAG) { + if (!disable_only) + free_irq(bp->pdev->irq, bp->dev); + pci_disable_msi(bp->pdev); + bp->flags &= ~USING_MSI_FLAG; + + } else if (!disable_only) + free_irq(bp->pdev->irq, bp->dev); +} + +static int bnx2x_enable_msix(struct bnx2x *bp) +{ + int i, rc, offset = 1; + int igu_vec = 0; + + bp->msix_table[0].entry = igu_vec; + DP(NETIF_MSG_IFUP, "msix_table[0].entry = %d (slowpath)\n", igu_vec); + +#ifdef BCM_CNIC + igu_vec = BP_L_ID(bp) + offset; + bp->msix_table[1].entry = igu_vec; + DP(NETIF_MSG_IFUP, "msix_table[1].entry = %d (CNIC)\n", igu_vec); + offset++; +#endif + for_each_queue(bp, i) { + igu_vec = BP_L_ID(bp) + offset + i; + bp->msix_table[i + offset].entry = igu_vec; + DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d " + "(fastpath #%u)\n", i + offset, igu_vec, i); + } + + rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], + BNX2X_NUM_QUEUES(bp) + offset); + + /* + * reconfigure number of tx/rx queues according to available + * MSI-X vectors + */ + if (rc >= BNX2X_MIN_MSIX_VEC_CNT) { + /* vectors available for FP */ + int fp_vec = rc - BNX2X_MSIX_VEC_FP_START; + + DP(NETIF_MSG_IFUP, + "Trying to use less MSI-X vectors: %d\n", rc); + + rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], rc); + + if (rc) { + DP(NETIF_MSG_IFUP, + "MSI-X is not attainable rc %d\n", rc); + return rc; + } + + bp->num_queues = min(bp->num_queues, fp_vec); + + DP(NETIF_MSG_IFUP, "New queue configuration set: %d\n", + bp->num_queues); + } else if (rc) { + DP(NETIF_MSG_IFUP, "MSI-X is not attainable rc %d\n", rc); + return rc; + } + + bp->flags |= USING_MSIX_FLAG; + + return 0; +} + +static int bnx2x_req_msix_irqs(struct bnx2x *bp) +{ + int i, rc, offset = 1; + + rc = request_irq(bp->msix_table[0].vector, bnx2x_msix_sp_int, 0, + bp->dev->name, bp->dev); + if (rc) { + BNX2X_ERR("request sp irq failed\n"); + return -EBUSY; + } + +#ifdef BCM_CNIC + offset++; +#endif + for_each_queue(bp, i) { + struct bnx2x_fastpath *fp = &bp->fp[i]; + snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", + bp->dev->name, i); + + rc = request_irq(bp->msix_table[i + offset].vector, + bnx2x_msix_fp_int, 0, fp->name, fp); + if (rc) { + BNX2X_ERR("request fp #%d irq failed rc %d\n", i, rc); + bnx2x_free_msix_irqs(bp); + return -EBUSY; + } + + fp->state = BNX2X_FP_STATE_IRQ; + } + + i = BNX2X_NUM_QUEUES(bp); + netdev_info(bp->dev, "using MSI-X IRQs: sp %d fp[%d] %d" + " ... fp[%d] %d\n", + bp->msix_table[0].vector, + 0, bp->msix_table[offset].vector, + i - 1, bp->msix_table[offset + i - 1].vector); + + return 0; +} + +static int bnx2x_enable_msi(struct bnx2x *bp) +{ + int rc; + + rc = pci_enable_msi(bp->pdev); + if (rc) { + DP(NETIF_MSG_IFUP, "MSI is not attainable\n"); + return -1; + } + bp->flags |= USING_MSI_FLAG; + + return 0; +} + +static int bnx2x_req_irq(struct bnx2x *bp) +{ + unsigned long flags; + int rc; + + if (bp->flags & USING_MSI_FLAG) + flags = 0; + else + flags = IRQF_SHARED; + + rc = request_irq(bp->pdev->irq, bnx2x_interrupt, flags, + bp->dev->name, bp->dev); + if (!rc) + bnx2x_fp(bp, 0, state) = BNX2X_FP_STATE_IRQ; + + return rc; +} + +static void bnx2x_napi_enable(struct bnx2x *bp) +{ + int i; + + for_each_queue(bp, i) + napi_enable(&bnx2x_fp(bp, i, napi)); +} + +static void bnx2x_napi_disable(struct bnx2x *bp) +{ + int i; + + for_each_queue(bp, i) + napi_disable(&bnx2x_fp(bp, i, napi)); +} + +void bnx2x_netif_start(struct bnx2x *bp) +{ + int intr_sem; + + intr_sem = atomic_dec_and_test(&bp->intr_sem); + smp_wmb(); /* Ensure that bp->intr_sem update is SMP-safe */ + + if (intr_sem) { + if (netif_running(bp->dev)) { + bnx2x_napi_enable(bp); + bnx2x_int_enable(bp); + if (bp->state == BNX2X_STATE_OPEN) + netif_tx_wake_all_queues(bp->dev); + } + } +} + +void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw) +{ + bnx2x_int_disable_sync(bp, disable_hw); + bnx2x_napi_disable(bp); + netif_tx_disable(bp->dev); +} +static int bnx2x_set_num_queues(struct bnx2x *bp) +{ + int rc = 0; + + switch (bp->int_mode) { + case INT_MODE_INTx: + case INT_MODE_MSI: + bp->num_queues = 1; + DP(NETIF_MSG_IFUP, "set number of queues to 1\n"); + break; + default: + /* Set number of queues according to bp->multi_mode value */ + bnx2x_set_num_queues_msix(bp); + + DP(NETIF_MSG_IFUP, "set number of queues to %d\n", + bp->num_queues); + + /* if we can't use MSI-X we only need one fp, + * so try to enable MSI-X with the requested number of fp's + * and fallback to MSI or legacy INTx with one fp + */ + rc = bnx2x_enable_msix(bp); + if (rc) + /* failed to enable MSI-X */ + bp->num_queues = 1; + break; + } + bp->dev->real_num_tx_queues = bp->num_queues; + return rc; +} + +/* must be called with rtnl_lock */ +int bnx2x_nic_load(struct bnx2x *bp, int load_mode) +{ + u32 load_code; + int i, rc; + +#ifdef BNX2X_STOP_ON_ERROR + if (unlikely(bp->panic)) + return -EPERM; +#endif + + bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD; + + rc = bnx2x_set_num_queues(bp); + + if (bnx2x_alloc_mem(bp)) { + bnx2x_free_irq(bp, true); + return -ENOMEM; + } + + for_each_queue(bp, i) + bnx2x_fp(bp, i, disable_tpa) = + ((bp->flags & TPA_ENABLE_FLAG) == 0); + + for_each_queue(bp, i) + netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi), + bnx2x_poll, 128); + + bnx2x_napi_enable(bp); + + if (bp->flags & USING_MSIX_FLAG) { + rc = bnx2x_req_msix_irqs(bp); + if (rc) { + bnx2x_free_irq(bp, true); + goto load_error1; + } + } else { + /* Fall to INTx if failed to enable MSI-X due to lack of + memory (in bnx2x_set_num_queues()) */ + if ((rc != -ENOMEM) && (bp->int_mode != INT_MODE_INTx)) + bnx2x_enable_msi(bp); + bnx2x_ack_int(bp); + rc = bnx2x_req_irq(bp); + if (rc) { + BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc); + bnx2x_free_irq(bp, true); + goto load_error1; + } + if (bp->flags & USING_MSI_FLAG) { + bp->dev->irq = bp->pdev->irq; + netdev_info(bp->dev, "using MSI IRQ %d\n", + bp->pdev->irq); + } + } + + /* Send LOAD_REQUEST command to MCP + Returns the type of LOAD command: + if it is the first port to be initialized + common blocks should be initialized, otherwise - not + */ + if (!BP_NOMCP(bp)) { + load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ); + if (!load_code) { + BNX2X_ERR("MCP response failure, aborting\n"); + rc = -EBUSY; + goto load_error2; + } + if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) { + rc = -EBUSY; /* other port in diagnostic mode */ + goto load_error2; + } + + } else { + int port = BP_PORT(bp); + + DP(NETIF_MSG_IFUP, "NO MCP - load counts %d, %d, %d\n", + load_count[0], load_count[1], load_count[2]); + load_count[0]++; + load_count[1 + port]++; + DP(NETIF_MSG_IFUP, "NO MCP - new load counts %d, %d, %d\n", + load_count[0], load_count[1], load_count[2]); + if (load_count[0] == 1) + load_code = FW_MSG_CODE_DRV_LOAD_COMMON; + else if (load_count[1 + port] == 1) + load_code = FW_MSG_CODE_DRV_LOAD_PORT; + else + load_code = FW_MSG_CODE_DRV_LOAD_FUNCTION; + } + + if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) || + (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) + bp->port.pmf = 1; + else + bp->port.pmf = 0; + DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf); + + /* Initialize HW */ + rc = bnx2x_init_hw(bp, load_code); + if (rc) { + BNX2X_ERR("HW init failed, aborting\n"); + bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE); + bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP); + bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE); + goto load_error2; + } + + /* Setup NIC internals and enable interrupts */ + bnx2x_nic_init(bp, load_code); + + if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) && + (bp->common.shmem2_base)) + SHMEM2_WR(bp, dcc_support, + (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV | + SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV)); + + /* Send LOAD_DONE command to MCP */ + if (!BP_NOMCP(bp)) { + load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE); + if (!load_code) { + BNX2X_ERR("MCP response failure, aborting\n"); + rc = -EBUSY; + goto load_error3; + } + } + + bp->state = BNX2X_STATE_OPENING_WAIT4_PORT; + + rc = bnx2x_setup_leading(bp); + if (rc) { + BNX2X_ERR("Setup leading failed!\n"); +#ifndef BNX2X_STOP_ON_ERROR + goto load_error3; +#else + bp->panic = 1; + return -EBUSY; +#endif + } + + if (CHIP_IS_E1H(bp)) + if (bp->mf_config & FUNC_MF_CFG_FUNC_DISABLED) { + DP(NETIF_MSG_IFUP, "mf_cfg function disabled\n"); + bp->flags |= MF_FUNC_DIS; + } + + if (bp->state == BNX2X_STATE_OPEN) { +#ifdef BCM_CNIC + /* Enable Timer scan */ + REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + BP_PORT(bp)*4, 1); +#endif + for_each_nondefault_queue(bp, i) { + rc = bnx2x_setup_multi(bp, i); + if (rc) +#ifdef BCM_CNIC + goto load_error4; +#else + goto load_error3; +#endif + } + + if (CHIP_IS_E1(bp)) + bnx2x_set_eth_mac_addr_e1(bp, 1); + else + bnx2x_set_eth_mac_addr_e1h(bp, 1); +#ifdef BCM_CNIC + /* Set iSCSI L2 MAC */ + mutex_lock(&bp->cnic_mutex); + if (bp->cnic_eth_dev.drv_state & CNIC_DRV_STATE_REGD) { + bnx2x_set_iscsi_eth_mac_addr(bp, 1); + bp->cnic_flags |= BNX2X_CNIC_FLAG_MAC_SET; + bnx2x_init_sb(bp, bp->cnic_sb, bp->cnic_sb_mapping, + CNIC_SB_ID(bp)); + } + mutex_unlock(&bp->cnic_mutex); +#endif + } + + if (bp->port.pmf) + bnx2x_initial_phy_init(bp, load_mode); + + /* Start fast path */ + switch (load_mode) { + case LOAD_NORMAL: + if (bp->state == BNX2X_STATE_OPEN) { + /* Tx queue should be only reenabled */ + netif_tx_wake_all_queues(bp->dev); + } + /* Initialize the receive filter. */ + bnx2x_set_rx_mode(bp->dev); + break; + + case LOAD_OPEN: + netif_tx_start_all_queues(bp->dev); + if (bp->state != BNX2X_STATE_OPEN) + netif_tx_disable(bp->dev); + /* Initialize the receive filter. */ + bnx2x_set_rx_mode(bp->dev); + break; + + case LOAD_DIAG: + /* Initialize the receive filter. */ + bnx2x_set_rx_mode(bp->dev); + bp->state = BNX2X_STATE_DIAG; + break; + + default: + break; + } + + if (!bp->port.pmf) + bnx2x__link_status_update(bp); + + /* start the timer */ + mod_timer(&bp->timer, jiffies + bp->current_interval); + +#ifdef BCM_CNIC + bnx2x_setup_cnic_irq_info(bp); + if (bp->state == BNX2X_STATE_OPEN) + bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD); +#endif + bnx2x_inc_load_cnt(bp); + + return 0; + +#ifdef BCM_CNIC +load_error4: + /* Disable Timer scan */ + REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + BP_PORT(bp)*4, 0); +#endif +load_error3: + bnx2x_int_disable_sync(bp, 1); + if (!BP_NOMCP(bp)) { + bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP); + bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE); + } + bp->port.pmf = 0; + /* Free SKBs, SGEs, TPA pool and driver internals */ + bnx2x_free_skbs(bp); + for_each_queue(bp, i) + bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); +load_error2: + /* Release IRQs */ + bnx2x_free_irq(bp, false); +load_error1: + bnx2x_napi_disable(bp); + for_each_queue(bp, i) + netif_napi_del(&bnx2x_fp(bp, i, napi)); + bnx2x_free_mem(bp); + + return rc; +} + +/* must be called with rtnl_lock */ +int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode) +{ + int i; + + if (bp->state == BNX2X_STATE_CLOSED) { + /* Interface has been removed - nothing to recover */ + bp->recovery_state = BNX2X_RECOVERY_DONE; + bp->is_leader = 0; + bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_RESERVED_08); + smp_wmb(); + + return -EINVAL; + } + +#ifdef BCM_CNIC + bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD); +#endif + bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT; + + /* Set "drop all" */ + bp->rx_mode = BNX2X_RX_MODE_NONE; + bnx2x_set_storm_rx_mode(bp); + + /* Disable HW interrupts, NAPI and Tx */ + bnx2x_netif_stop(bp, 1); + netif_carrier_off(bp->dev); + + del_timer_sync(&bp->timer); + SHMEM_WR(bp, func_mb[BP_FUNC(bp)].drv_pulse_mb, + (DRV_PULSE_ALWAYS_ALIVE | bp->fw_drv_pulse_wr_seq)); + bnx2x_stats_handle(bp, STATS_EVENT_STOP); + + /* Release IRQs */ + bnx2x_free_irq(bp, false); + + /* Cleanup the chip if needed */ + if (unload_mode != UNLOAD_RECOVERY) + bnx2x_chip_cleanup(bp, unload_mode); + + bp->port.pmf = 0; + + /* Free SKBs, SGEs, TPA pool and driver internals */ + bnx2x_free_skbs(bp); + for_each_queue(bp, i) + bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); + for_each_queue(bp, i) + netif_napi_del(&bnx2x_fp(bp, i, napi)); + bnx2x_free_mem(bp); + + bp->state = BNX2X_STATE_CLOSED; + + /* The last driver must disable a "close the gate" if there is no + * parity attention or "process kill" pending. + */ + if ((!bnx2x_dec_load_cnt(bp)) && (!bnx2x_chk_parity_attn(bp)) && + bnx2x_reset_is_done(bp)) + bnx2x_disable_close_the_gate(bp); + + /* Reset MCP mail box sequence if there is on going recovery */ + if (unload_mode == UNLOAD_RECOVERY) + bp->fw_seq = 0; + + return 0; +} +int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state) +{ + u16 pmcsr; + + pci_read_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, &pmcsr); + + switch (state) { + case PCI_D0: + pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, + ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) | + PCI_PM_CTRL_PME_STATUS)); + + if (pmcsr & PCI_PM_CTRL_STATE_MASK) + /* delay required during transition out of D3hot */ + msleep(20); + break; + + case PCI_D3hot: + /* If there are other clients above don't + shut down the power */ + if (atomic_read(&bp->pdev->enable_cnt) != 1) + return 0; + /* Don't shut down the power for emulation and FPGA */ + if (CHIP_REV_IS_SLOW(bp)) + return 0; + + pmcsr &= ~PCI_PM_CTRL_STATE_MASK; + pmcsr |= 3; + + if (bp->wol) + pmcsr |= PCI_PM_CTRL_PME_ENABLE; + + pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, + pmcsr); + + /* No more memory access after this point until + * device is brought back to D0. + */ + break; + + default: + return -EINVAL; + } + return 0; +} + + + +/* + * net_device service functions + */ + +static int bnx2x_poll(struct napi_struct *napi, int budget) +{ + int work_done = 0; + struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath, + napi); + struct bnx2x *bp = fp->bp; + + while (1) { +#ifdef BNX2X_STOP_ON_ERROR + if (unlikely(bp->panic)) { + napi_complete(napi); + return 0; + } +#endif + + if (bnx2x_has_tx_work(fp)) + bnx2x_tx_int(fp); + + if (bnx2x_has_rx_work(fp)) { + work_done += bnx2x_rx_int(fp, budget - work_done); + + /* must not complete if we consumed full budget */ + if (work_done >= budget) + break; + } + + /* Fall out from the NAPI loop if needed */ + if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) { + bnx2x_update_fpsb_idx(fp); + /* bnx2x_has_rx_work() reads the status block, thus we need + * to ensure that status block indices have been actually read + * (bnx2x_update_fpsb_idx) prior to this check + * (bnx2x_has_rx_work) so that we won't write the "newer" + * value of the status block to IGU (if there was a DMA right + * after bnx2x_has_rx_work and if there is no rmb, the memory + * reading (bnx2x_update_fpsb_idx) may be postponed to right + * before bnx2x_ack_sb). In this case there will never be + * another interrupt until there is another update of the + * status block, while there is still unhandled work. + */ + rmb(); + + if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) { + napi_complete(napi); + /* Re-enable interrupts */ + bnx2x_ack_sb(bp, fp->sb_id, CSTORM_ID, + le16_to_cpu(fp->fp_c_idx), + IGU_INT_NOP, 1); + bnx2x_ack_sb(bp, fp->sb_id, USTORM_ID, + le16_to_cpu(fp->fp_u_idx), + IGU_INT_ENABLE, 1); + break; + } + } + } + + return work_done; +} + + +/* we split the first BD into headers and data BDs + * to ease the pain of our fellow microcode engineers + * we use one mapping for both BDs + * So far this has only been observed to happen + * in Other Operating Systems(TM) + */ +static noinline u16 bnx2x_tx_split(struct bnx2x *bp, + struct bnx2x_fastpath *fp, + struct sw_tx_bd *tx_buf, + struct eth_tx_start_bd **tx_bd, u16 hlen, + u16 bd_prod, int nbd) +{ + struct eth_tx_start_bd *h_tx_bd = *tx_bd; + struct eth_tx_bd *d_tx_bd; + dma_addr_t mapping; + int old_len = le16_to_cpu(h_tx_bd->nbytes); + + /* first fix first BD */ + h_tx_bd->nbd = cpu_to_le16(nbd); + h_tx_bd->nbytes = cpu_to_le16(hlen); + + DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d " + "(%x:%x) nbd %d\n", h_tx_bd->nbytes, h_tx_bd->addr_hi, + h_tx_bd->addr_lo, h_tx_bd->nbd); + + /* now get a new data BD + * (after the pbd) and fill it */ + bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); + d_tx_bd = &fp->tx_desc_ring[bd_prod].reg_bd; + + mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi), + le32_to_cpu(h_tx_bd->addr_lo)) + hlen; + + d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); + d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); + d_tx_bd->nbytes = cpu_to_le16(old_len - hlen); + + /* this marks the BD as one that has no individual mapping */ + tx_buf->flags |= BNX2X_TSO_SPLIT_BD; + + DP(NETIF_MSG_TX_QUEUED, + "TSO split data size is %d (%x:%x)\n", + d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo); + + /* update tx_bd */ + *tx_bd = (struct eth_tx_start_bd *)d_tx_bd; + + return bd_prod; +} + +static inline u16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix) +{ + if (fix > 0) + csum = (u16) ~csum_fold(csum_sub(csum, + csum_partial(t_header - fix, fix, 0))); + + else if (fix < 0) + csum = (u16) ~csum_fold(csum_add(csum, + csum_partial(t_header, -fix, 0))); + + return swab16(csum); +} + +static inline u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb) +{ + u32 rc; + + if (skb->ip_summed != CHECKSUM_PARTIAL) + rc = XMIT_PLAIN; + + else { + if (skb->protocol == htons(ETH_P_IPV6)) { + rc = XMIT_CSUM_V6; + if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) + rc |= XMIT_CSUM_TCP; + + } else { + rc = XMIT_CSUM_V4; + if (ip_hdr(skb)->protocol == IPPROTO_TCP) + rc |= XMIT_CSUM_TCP; + } + } + + if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4) + rc |= (XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP); + + else if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) + rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6); + + return rc; +} + +#if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3) +/* check if packet requires linearization (packet is too fragmented) + no need to check fragmentation if page size > 8K (there will be no + violation to FW restrictions) */ +static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb, + u32 xmit_type) +{ + int to_copy = 0; + int hlen = 0; + int first_bd_sz = 0; + + /* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */ + if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - 3)) { + + if (xmit_type & XMIT_GSO) { + unsigned short lso_mss = skb_shinfo(skb)->gso_size; + /* Check if LSO packet needs to be copied: + 3 = 1 (for headers BD) + 2 (for PBD and last BD) */ + int wnd_size = MAX_FETCH_BD - 3; + /* Number of windows to check */ + int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size; + int wnd_idx = 0; + int frag_idx = 0; + u32 wnd_sum = 0; + + /* Headers length */ + hlen = (int)(skb_transport_header(skb) - skb->data) + + tcp_hdrlen(skb); + + /* Amount of data (w/o headers) on linear part of SKB*/ + first_bd_sz = skb_headlen(skb) - hlen; + + wnd_sum = first_bd_sz; + + /* Calculate the first sum - it's special */ + for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++) + wnd_sum += + skb_shinfo(skb)->frags[frag_idx].size; + + /* If there was data on linear skb data - check it */ + if (first_bd_sz > 0) { + if (unlikely(wnd_sum < lso_mss)) { + to_copy = 1; + goto exit_lbl; + } + + wnd_sum -= first_bd_sz; + } + + /* Others are easier: run through the frag list and + check all windows */ + for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) { + wnd_sum += + skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1].size; + + if (unlikely(wnd_sum < lso_mss)) { + to_copy = 1; + break; + } + wnd_sum -= + skb_shinfo(skb)->frags[wnd_idx].size; + } + } else { + /* in non-LSO too fragmented packet should always + be linearized */ + to_copy = 1; + } + } + +exit_lbl: + if (unlikely(to_copy)) + DP(NETIF_MSG_TX_QUEUED, + "Linearization IS REQUIRED for %s packet. " + "num_frags %d hlen %d first_bd_sz %d\n", + (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO", + skb_shinfo(skb)->nr_frags, hlen, first_bd_sz); + + return to_copy; +} +#endif + +/* called with netif_tx_lock + * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call + * netif_wake_queue() + */ +netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct bnx2x *bp = netdev_priv(dev); + struct bnx2x_fastpath *fp; + struct netdev_queue *txq; + struct sw_tx_bd *tx_buf; + struct eth_tx_start_bd *tx_start_bd; + struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL; + struct eth_tx_parse_bd *pbd = NULL; + u16 pkt_prod, bd_prod; + int nbd, fp_index; + dma_addr_t mapping; + u32 xmit_type = bnx2x_xmit_type(bp, skb); + int i; + u8 hlen = 0; + __le16 pkt_size = 0; + struct ethhdr *eth; + u8 mac_type = UNICAST_ADDRESS; + +#ifdef BNX2X_STOP_ON_ERROR + if (unlikely(bp->panic)) + return NETDEV_TX_BUSY; +#endif + + fp_index = skb_get_queue_mapping(skb); + txq = netdev_get_tx_queue(dev, fp_index); + + fp = &bp->fp[fp_index]; + + if (unlikely(bnx2x_tx_avail(fp) < (skb_shinfo(skb)->nr_frags + 3))) { + fp->eth_q_stats.driver_xoff++; + netif_tx_stop_queue(txq); + BNX2X_ERR("BUG! Tx ring full when queue awake!\n"); + return NETDEV_TX_BUSY; + } + + DP(NETIF_MSG_TX_QUEUED, "SKB: summed %x protocol %x protocol(%x,%x)" + " gso type %x xmit_type %x\n", + skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr, + ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type); + + eth = (struct ethhdr *)skb->data; + + /* set flag according to packet type (UNICAST_ADDRESS is default)*/ + if (unlikely(is_multicast_ether_addr(eth->h_dest))) { + if (is_broadcast_ether_addr(eth->h_dest)) + mac_type = BROADCAST_ADDRESS; + else + mac_type = MULTICAST_ADDRESS; + } + +#if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3) + /* First, check if we need to linearize the skb (due to FW + restrictions). No need to check fragmentation if page size > 8K + (there will be no violation to FW restrictions) */ + if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) { + /* Statistics of linearization */ + bp->lin_cnt++; + if (skb_linearize(skb) != 0) { + DP(NETIF_MSG_TX_QUEUED, "SKB linearization failed - " + "silently dropping this SKB\n"); + dev_kfree_skb_any(skb); + return NETDEV_TX_OK; + } + } +#endif + + /* + Please read carefully. First we use one BD which we mark as start, + then we have a parsing info BD (used for TSO or xsum), + and only then we have the rest of the TSO BDs. + (don't forget to mark the last one as last, + and to unmap only AFTER you write to the BD ...) + And above all, all pdb sizes are in words - NOT DWORDS! + */ + + pkt_prod = fp->tx_pkt_prod++; + bd_prod = TX_BD(fp->tx_bd_prod); + + /* get a tx_buf and first BD */ + tx_buf = &fp->tx_buf_ring[TX_BD(pkt_prod)]; + tx_start_bd = &fp->tx_desc_ring[bd_prod].start_bd; + + tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD; + tx_start_bd->general_data = (mac_type << + ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT); + /* header nbd */ + tx_start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT); + + /* remember the first BD of the packet */ + tx_buf->first_bd = fp->tx_bd_prod; + tx_buf->skb = skb; + tx_buf->flags = 0; + + DP(NETIF_MSG_TX_QUEUED, + "sending pkt %u @%p next_idx %u bd %u @%p\n", + pkt_prod, tx_buf, fp->tx_pkt_prod, bd_prod, tx_start_bd); + +#ifdef BCM_VLAN + if ((bp->vlgrp != NULL) && vlan_tx_tag_present(skb) && + (bp->flags & HW_VLAN_TX_FLAG)) { + tx_start_bd->vlan = cpu_to_le16(vlan_tx_tag_get(skb)); + tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_VLAN_TAG; + } else +#endif + tx_start_bd->vlan = cpu_to_le16(pkt_prod); + + /* turn on parsing and get a BD */ + bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); + pbd = &fp->tx_desc_ring[bd_prod].parse_bd; + + memset(pbd, 0, sizeof(struct eth_tx_parse_bd)); + + if (xmit_type & XMIT_CSUM) { + hlen = (skb_network_header(skb) - skb->data) / 2; + + /* for now NS flag is not used in Linux */ + pbd->global_data = + (hlen | ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) << + ETH_TX_PARSE_BD_LLC_SNAP_EN_SHIFT)); + + pbd->ip_hlen = (skb_transport_header(skb) - + skb_network_header(skb)) / 2; + + hlen += pbd->ip_hlen + tcp_hdrlen(skb) / 2; + + pbd->total_hlen = cpu_to_le16(hlen); + hlen = hlen*2; + + tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM; + + if (xmit_type & XMIT_CSUM_V4) + tx_start_bd->bd_flags.as_bitfield |= + ETH_TX_BD_FLAGS_IP_CSUM; + else + tx_start_bd->bd_flags.as_bitfield |= + ETH_TX_BD_FLAGS_IPV6; + + if (xmit_type & XMIT_CSUM_TCP) { + pbd->tcp_pseudo_csum = swab16(tcp_hdr(skb)->check); + + } else { + s8 fix = SKB_CS_OFF(skb); /* signed! */ + + pbd->global_data |= ETH_TX_PARSE_BD_UDP_CS_FLG; + + DP(NETIF_MSG_TX_QUEUED, + "hlen %d fix %d csum before fix %x\n", + le16_to_cpu(pbd->total_hlen), fix, SKB_CS(skb)); + + /* HW bug: fixup the CSUM */ + pbd->tcp_pseudo_csum = + bnx2x_csum_fix(skb_transport_header(skb), + SKB_CS(skb), fix); + + DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n", + pbd->tcp_pseudo_csum); + } + } + + mapping = dma_map_single(&bp->pdev->dev, skb->data, + skb_headlen(skb), DMA_TO_DEVICE); + + tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); + tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); + nbd = skb_shinfo(skb)->nr_frags + 2; /* start_bd + pbd + frags */ + tx_start_bd->nbd = cpu_to_le16(nbd); + tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb)); + pkt_size = tx_start_bd->nbytes; + + DP(NETIF_MSG_TX_QUEUED, "first bd @%p addr (%x:%x) nbd %d" + " nbytes %d flags %x vlan %x\n", + tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo, + le16_to_cpu(tx_start_bd->nbd), le16_to_cpu(tx_start_bd->nbytes), + tx_start_bd->bd_flags.as_bitfield, le16_to_cpu(tx_start_bd->vlan)); + + if (xmit_type & XMIT_GSO) { + + DP(NETIF_MSG_TX_QUEUED, + "TSO packet len %d hlen %d total len %d tso size %d\n", + skb->len, hlen, skb_headlen(skb), + skb_shinfo(skb)->gso_size); + + tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO; + + if (unlikely(skb_headlen(skb) > hlen)) + bd_prod = bnx2x_tx_split(bp, fp, tx_buf, &tx_start_bd, + hlen, bd_prod, ++nbd); + + pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size); + pbd->tcp_send_seq = swab32(tcp_hdr(skb)->seq); + pbd->tcp_flags = pbd_tcp_flags(skb); + + if (xmit_type & XMIT_GSO_V4) { + pbd->ip_id = swab16(ip_hdr(skb)->id); + pbd->tcp_pseudo_csum = + swab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr, + ip_hdr(skb)->daddr, + 0, IPPROTO_TCP, 0)); + + } else + pbd->tcp_pseudo_csum = + swab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, + &ipv6_hdr(skb)->daddr, + 0, IPPROTO_TCP, 0)); + + pbd->global_data |= ETH_TX_PARSE_BD_PSEUDO_CS_WITHOUT_LEN; + } + tx_data_bd = (struct eth_tx_bd *)tx_start_bd; + + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; + + bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); + tx_data_bd = &fp->tx_desc_ring[bd_prod].reg_bd; + if (total_pkt_bd == NULL) + total_pkt_bd = &fp->tx_desc_ring[bd_prod].reg_bd; + + mapping = dma_map_page(&bp->pdev->dev, frag->page, + frag->page_offset, + frag->size, DMA_TO_DEVICE); + + tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); + tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); + tx_data_bd->nbytes = cpu_to_le16(frag->size); + le16_add_cpu(&pkt_size, frag->size); + + DP(NETIF_MSG_TX_QUEUED, + "frag %d bd @%p addr (%x:%x) nbytes %d\n", + i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo, + le16_to_cpu(tx_data_bd->nbytes)); + } + + DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd); + + bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); + + /* now send a tx doorbell, counting the next BD + * if the packet contains or ends with it + */ + if (TX_BD_POFF(bd_prod) < nbd) + nbd++; + + if (total_pkt_bd != NULL) + total_pkt_bd->total_pkt_bytes = pkt_size; + + if (pbd) + DP(NETIF_MSG_TX_QUEUED, + "PBD @%p ip_data %x ip_hlen %u ip_id %u lso_mss %u" + " tcp_flags %x xsum %x seq %u hlen %u\n", + pbd, pbd->global_data, pbd->ip_hlen, pbd->ip_id, + pbd->lso_mss, pbd->tcp_flags, pbd->tcp_pseudo_csum, + pbd->tcp_send_seq, le16_to_cpu(pbd->total_hlen)); + + DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod); + + /* + * Make sure that the BD data is updated before updating the producer + * since FW might read the BD right after the producer is updated. + * This is only applicable for weak-ordered memory model archs such + * as IA-64. The following barrier is also mandatory since FW will + * assumes packets must have BDs. + */ + wmb(); + + fp->tx_db.data.prod += nbd; + barrier(); + DOORBELL(bp, fp->index, fp->tx_db.raw); + + mmiowb(); + + fp->tx_bd_prod += nbd; + + if (unlikely(bnx2x_tx_avail(fp) < MAX_SKB_FRAGS + 3)) { + netif_tx_stop_queue(txq); + + /* paired memory barrier is in bnx2x_tx_int(), we have to keep + * ordering of set_bit() in netif_tx_stop_queue() and read of + * fp->bd_tx_cons */ + smp_mb(); + + fp->eth_q_stats.driver_xoff++; + if (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3) + netif_tx_wake_queue(txq); + } + fp->tx_pkt++; + + return NETDEV_TX_OK; +} +/* called with rtnl_lock */ +int bnx2x_change_mac_addr(struct net_device *dev, void *p) +{ + struct sockaddr *addr = p; + struct bnx2x *bp = netdev_priv(dev); + + if (!is_valid_ether_addr((u8 *)(addr->sa_data))) + return -EINVAL; + + memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); + if (netif_running(dev)) { + if (CHIP_IS_E1(bp)) + bnx2x_set_eth_mac_addr_e1(bp, 1); + else + bnx2x_set_eth_mac_addr_e1h(bp, 1); + } + + return 0; +} + +/* called with rtnl_lock */ +int bnx2x_change_mtu(struct net_device *dev, int new_mtu) +{ + struct bnx2x *bp = netdev_priv(dev); + int rc = 0; + + if (bp->recovery_state != BNX2X_RECOVERY_DONE) { + printk(KERN_ERR "Handling parity error recovery. Try again later\n"); + return -EAGAIN; + } + + if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) || + ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE)) + return -EINVAL; + + /* This does not race with packet allocation + * because the actual alloc size is + * only updated as part of load + */ + dev->mtu = new_mtu; + + if (netif_running(dev)) { + bnx2x_nic_unload(bp, UNLOAD_NORMAL); + rc = bnx2x_nic_load(bp, LOAD_NORMAL); + } + + return rc; +} + +void bnx2x_tx_timeout(struct net_device *dev) +{ + struct bnx2x *bp = netdev_priv(dev); + +#ifdef BNX2X_STOP_ON_ERROR + if (!bp->panic) + bnx2x_panic(); +#endif + /* This allows the netif to be shutdown gracefully before resetting */ + schedule_delayed_work(&bp->reset_task, 0); +} + +#ifdef BCM_VLAN +/* called with rtnl_lock */ +void bnx2x_vlan_rx_register(struct net_device *dev, + struct vlan_group *vlgrp) +{ + struct bnx2x *bp = netdev_priv(dev); + + bp->vlgrp = vlgrp; + + /* Set flags according to the required capabilities */ + bp->flags &= ~(HW_VLAN_RX_FLAG | HW_VLAN_TX_FLAG); + + if (dev->features & NETIF_F_HW_VLAN_TX) + bp->flags |= HW_VLAN_TX_FLAG; + + if (dev->features & NETIF_F_HW_VLAN_RX) + bp->flags |= HW_VLAN_RX_FLAG; + + if (netif_running(dev)) + bnx2x_set_client_config(bp); +} + +#endif +int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct bnx2x *bp; + + if (!dev) { + dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n"); + return -ENODEV; + } + bp = netdev_priv(dev); + + rtnl_lock(); + + pci_save_state(pdev); + + if (!netif_running(dev)) { + rtnl_unlock(); + return 0; + } + + netif_device_detach(dev); + + bnx2x_nic_unload(bp, UNLOAD_CLOSE); + + bnx2x_set_power_state(bp, pci_choose_state(pdev, state)); + + rtnl_unlock(); + + return 0; +} + +int bnx2x_resume(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct bnx2x *bp; + int rc; + + if (!dev) { + dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n"); + return -ENODEV; + } + bp = netdev_priv(dev); + + if (bp->recovery_state != BNX2X_RECOVERY_DONE) { + printk(KERN_ERR "Handling parity error recovery. Try again later\n"); + return -EAGAIN; + } + + rtnl_lock(); + + pci_restore_state(pdev); + + if (!netif_running(dev)) { + rtnl_unlock(); + return 0; + } + + bnx2x_set_power_state(bp, PCI_D0); + netif_device_attach(dev); + + rc = bnx2x_nic_load(bp, LOAD_OPEN); + + rtnl_unlock(); + + return rc; +} diff --git a/drivers/net/bnx2x/bnx2x_cmn.h b/drivers/net/bnx2x/bnx2x_cmn.h new file mode 100644 index 000000000000..d1979b1a7ed2 --- /dev/null +++ b/drivers/net/bnx2x/bnx2x_cmn.h @@ -0,0 +1,652 @@ +/* bnx2x_cmn.h: Broadcom Everest network driver. + * + * Copyright (c) 2007-2010 Broadcom Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation. + * + * Maintained by: Eilon Greenstein <eilong@broadcom.com> + * Written by: Eliezer Tamir + * Based on code from Michael Chan's bnx2 driver + * UDP CSUM errata workaround by Arik Gendelman + * Slowpath and fastpath rework by Vladislav Zolotarov + * Statistics and Link management by Yitchak Gertner + * + */ +#ifndef BNX2X_CMN_H +#define BNX2X_CMN_H + +#include <linux/types.h> +#include <linux/netdevice.h> + + +#include "bnx2x.h" + + +/*********************** Interfaces **************************** + * Functions that need to be implemented by each driver version + */ + +/** + * Initialize link parameters structure variables. + * + * @param bp + * @param load_mode + * + * @return u8 + */ +u8 bnx2x_initial_phy_init(struct bnx2x *bp, int load_mode); + +/** + * Configure hw according to link parameters structure. + * + * @param bp + */ +void bnx2x_link_set(struct bnx2x *bp); + +/** + * Query link status + * + * @param bp + * + * @return 0 - link is UP + */ +u8 bnx2x_link_test(struct bnx2x *bp); + +/** + * Handles link status change + * + * @param bp + */ +void bnx2x__link_status_update(struct bnx2x *bp); + +/** + * MSI-X slowpath interrupt handler + * + * @param irq + * @param dev_instance + * + * @return irqreturn_t + */ +irqreturn_t bnx2x_msix_sp_int(int irq, void *dev_instance); + +/** + * non MSI-X interrupt handler + * + * @param irq + * @param dev_instance + * + * @return irqreturn_t + */ +irqreturn_t bnx2x_interrupt(int irq, void *dev_instance); +#ifdef BCM_CNIC + +/** + * Send command to cnic driver + * + * @param bp + * @param cmd + */ +int bnx2x_cnic_notify(struct bnx2x *bp, int cmd); + +/** + * Provides cnic information for proper interrupt handling + * + * @param bp + */ +void bnx2x_setup_cnic_irq_info(struct bnx2x *bp); +#endif + +/** + * Enable HW interrupts. + * + * @param bp + */ +void bnx2x_int_enable(struct bnx2x *bp); + +/** + * Disable interrupts. This function ensures that there are no + * ISRs or SP DPCs (sp_task) are running after it returns. + * + * @param bp + * @param disable_hw if true, disable HW interrupts. + */ +void bnx2x_int_disable_sync(struct bnx2x *bp, int disable_hw); + +/** + * Init HW blocks according to current initialization stage: + * COMMON, PORT or FUNCTION. + * + * @param bp + * @param load_code: COMMON, PORT or FUNCTION + * + * @return int + */ +int bnx2x_init_hw(struct bnx2x *bp, u32 load_code); + +/** + * Init driver internals: + * - rings + * - status blocks + * - etc. + * + * @param bp + * @param load_code COMMON, PORT or FUNCTION + */ +void bnx2x_nic_init(struct bnx2x *bp, u32 load_code); + +/** + * Allocate driver's memory. + * + * @param bp + * + * @return int + */ +int bnx2x_alloc_mem(struct bnx2x *bp); + +/** + * Release driver's memory. + * + * @param bp + */ +void bnx2x_free_mem(struct bnx2x *bp); + +/** + * Bring up a leading (the first) eth Client. + * + * @param bp + * + * @return int + */ +int bnx2x_setup_leading(struct bnx2x *bp); + +/** + * Setup non-leading eth Client. + * + * @param bp + * @param fp + * + * @return int + */ +int bnx2x_setup_multi(struct bnx2x *bp, int index); + +/** + * Set number of quueus according to mode and number of available + * msi-x vectors + * + * @param bp + * + */ +void bnx2x_set_num_queues_msix(struct bnx2x *bp); + +/** + * Cleanup chip internals: + * - Cleanup MAC configuration. + * - Close clients. + * - etc. + * + * @param bp + * @param unload_mode + */ +void bnx2x_chip_cleanup(struct bnx2x *bp, int unload_mode); + +/** + * Acquire HW lock. + * + * @param bp + * @param resource Resource bit which was locked + * + * @return int + */ +int bnx2x_acquire_hw_lock(struct bnx2x *bp, u32 resource); + +/** + * Release HW lock. + * + * @param bp driver handle + * @param resource Resource bit which was locked + * + * @return int + */ +int bnx2x_release_hw_lock(struct bnx2x *bp, u32 resource); + +/** + * Configure eth MAC address in the HW according to the value in + * netdev->dev_addr for 57711 + * + * @param bp driver handle + * @param set + */ +void bnx2x_set_eth_mac_addr_e1h(struct bnx2x *bp, int set); + +/** + * Configure eth MAC address in the HW according to the value in + * netdev->dev_addr for 57710 + * + * @param bp driver handle + * @param set + */ +void bnx2x_set_eth_mac_addr_e1(struct bnx2x *bp, int set); + +#ifdef BCM_CNIC +/** + * Set iSCSI MAC(s) at the next enties in the CAM after the ETH + * MAC(s). The function will wait until the ramrod completion + * returns. + * + * @param bp driver handle + * @param set set or clear the CAM entry + * + * @return 0 if cussess, -ENODEV if ramrod doesn't return. + */ +int bnx2x_set_iscsi_eth_mac_addr(struct bnx2x *bp, int set); +#endif + +/** + * Initialize status block in FW and HW + * + * @param bp driver handle + * @param sb host_status_block + * @param dma_addr_t mapping + * @param int sb_id + */ +void bnx2x_init_sb(struct bnx2x *bp, struct host_status_block *sb, + dma_addr_t mapping, int sb_id); + +/** + * Reconfigure FW/HW according to dev->flags rx mode + * + * @param dev net_device + * + */ +void bnx2x_set_rx_mode(struct net_device *dev); + +/** + * Configure MAC filtering rules in a FW. + * + * @param bp driver handle + */ +void bnx2x_set_storm_rx_mode(struct bnx2x *bp); + +/* Parity errors related */ +void bnx2x_inc_load_cnt(struct bnx2x *bp); +u32 bnx2x_dec_load_cnt(struct bnx2x *bp); +bool bnx2x_chk_parity_attn(struct bnx2x *bp); +bool bnx2x_reset_is_done(struct bnx2x *bp); +void bnx2x_disable_close_the_gate(struct bnx2x *bp); + +/** + * Perform statistics handling according to event + * + * @param bp driver handle + * @param even tbnx2x_stats_event + */ +void bnx2x_stats_handle(struct bnx2x *bp, enum bnx2x_stats_event event); + +/** + * Configures FW with client paramteres (like HW VLAN removal) + * for each active client. + * + * @param bp + */ +void bnx2x_set_client_config(struct bnx2x *bp); + +/** + * Handle sp events + * + * @param fp fastpath handle for the event + * @param rr_cqe eth_rx_cqe + */ +void bnx2x_sp_event(struct bnx2x_fastpath *fp, union eth_rx_cqe *rr_cqe); + + +static inline void bnx2x_update_fpsb_idx(struct bnx2x_fastpath *fp) +{ + struct host_status_block *fpsb = fp->status_blk; + + barrier(); /* status block is written to by the chip */ + fp->fp_c_idx = fpsb->c_status_block.status_block_index; + fp->fp_u_idx = fpsb->u_status_block.status_block_index; +} + +static inline void bnx2x_update_rx_prod(struct bnx2x *bp, + struct bnx2x_fastpath *fp, + u16 bd_prod, u16 rx_comp_prod, + u16 rx_sge_prod) +{ + struct ustorm_eth_rx_producers rx_prods = {0}; + int i; + + /* Update producers */ + rx_prods.bd_prod = bd_prod; + rx_prods.cqe_prod = rx_comp_prod; + rx_prods.sge_prod = rx_sge_prod; + + /* + * Make sure that the BD and SGE data is updated before updating the + * producers since FW might read the BD/SGE right after the producer + * is updated. + * This is only applicable for weak-ordered memory model archs such + * as IA-64. The following barrier is also mandatory since FW will + * assumes BDs must have buffers. + */ + wmb(); + + for (i = 0; i < sizeof(struct ustorm_eth_rx_producers)/4; i++) + REG_WR(bp, BAR_USTRORM_INTMEM + + USTORM_RX_PRODS_OFFSET(BP_PORT(bp), fp->cl_id) + i*4, + ((u32 *)&rx_prods)[i]); + + mmiowb(); /* keep prod updates ordered */ + + DP(NETIF_MSG_RX_STATUS, + "queue[%d]: wrote bd_prod %u cqe_prod %u sge_prod %u\n", + fp->index, bd_prod, rx_comp_prod, rx_sge_prod); +} + + + +static inline void bnx2x_ack_sb(struct bnx2x *bp, u8 sb_id, + u8 storm, u16 index, u8 op, u8 update) +{ + u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp)*32 + + COMMAND_REG_INT_ACK); + struct igu_ack_register igu_ack; + + igu_ack.status_block_index = index; + igu_ack.sb_id_and_flags = + ((sb_id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) | + (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) | + (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) | + (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT)); + + DP(BNX2X_MSG_OFF, "write 0x%08x to HC addr 0x%x\n", + (*(u32 *)&igu_ack), hc_addr); + REG_WR(bp, hc_addr, (*(u32 *)&igu_ack)); + + /* Make sure that ACK is written */ + mmiowb(); + barrier(); +} +static inline u16 bnx2x_ack_int(struct bnx2x *bp) +{ + u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp)*32 + + COMMAND_REG_SIMD_MASK); + u32 result = REG_RD(bp, hc_addr); + + DP(BNX2X_MSG_OFF, "read 0x%08x from HC addr 0x%x\n", + result, hc_addr); + + return result; +} + +/* + * fast path service functions + */ + +static inline int bnx2x_has_tx_work_unload(struct bnx2x_fastpath *fp) +{ + /* Tell compiler that consumer and producer can change */ + barrier(); + return (fp->tx_pkt_prod != fp->tx_pkt_cons); +} + +static inline u16 bnx2x_tx_avail(struct bnx2x_fastpath *fp) +{ + s16 used; + u16 prod; + u16 cons; + + prod = fp->tx_bd_prod; + cons = fp->tx_bd_cons; + + /* NUM_TX_RINGS = number of "next-page" entries + It will be used as a threshold */ + used = SUB_S16(prod, cons) + (s16)NUM_TX_RINGS; + +#ifdef BNX2X_STOP_ON_ERROR + WARN_ON(used < 0); + WARN_ON(used > fp->bp->tx_ring_size); + WARN_ON((fp->bp->tx_ring_size - used) > MAX_TX_AVAIL); +#endif + + return (s16)(fp->bp->tx_ring_size) - used; +} + +static inline int bnx2x_has_tx_work(struct bnx2x_fastpath *fp) +{ + u16 hw_cons; + + /* Tell compiler that status block fields can change */ + barrier(); + hw_cons = le16_to_cpu(*fp->tx_cons_sb); + return hw_cons != fp->tx_pkt_cons; +} + +static inline void bnx2x_free_rx_sge(struct bnx2x *bp, + struct bnx2x_fastpath *fp, u16 index) +{ + struct sw_rx_page *sw_buf = &fp->rx_page_ring[index]; + struct page *page = sw_buf->page; + struct eth_rx_sge *sge = &fp->rx_sge_ring[index]; + + /* Skip "next page" elements */ + if (!page) + return; + + dma_unmap_page(&bp->pdev->dev, dma_unmap_addr(sw_buf, mapping), + SGE_PAGE_SIZE*PAGES_PER_SGE, PCI_DMA_FROMDEVICE); + __free_pages(page, PAGES_PER_SGE_SHIFT); + + sw_buf->page = NULL; + sge->addr_hi = 0; + sge->addr_lo = 0; +} + +static inline void bnx2x_free_rx_sge_range(struct bnx2x *bp, + struct bnx2x_fastpath *fp, int last) +{ + int i; + + for (i = 0; i < last; i++) + bnx2x_free_rx_sge(bp, fp, i); +} + +static inline int bnx2x_alloc_rx_sge(struct bnx2x *bp, + struct bnx2x_fastpath *fp, u16 index) +{ + struct page *page = alloc_pages(GFP_ATOMIC, PAGES_PER_SGE_SHIFT); + struct sw_rx_page *sw_buf = &fp->rx_page_ring[index]; + struct eth_rx_sge *sge = &fp->rx_sge_ring[index]; + dma_addr_t mapping; + + if (unlikely(page == NULL)) + return -ENOMEM; + + mapping = dma_map_page(&bp->pdev->dev, page, 0, + SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) { + __free_pages(page, PAGES_PER_SGE_SHIFT); + return -ENOMEM; + } + + sw_buf->page = page; + dma_unmap_addr_set(sw_buf, mapping, mapping); + + sge->addr_hi = cpu_to_le32(U64_HI(mapping)); + sge->addr_lo = cpu_to_le32(U64_LO(mapping)); + + return 0; +} +static inline int bnx2x_alloc_rx_skb(struct bnx2x *bp, + struct bnx2x_fastpath *fp, u16 index) +{ + struct sk_buff *skb; + struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[index]; + struct eth_rx_bd *rx_bd = &fp->rx_desc_ring[index]; + dma_addr_t mapping; + + skb = netdev_alloc_skb(bp->dev, bp->rx_buf_size); + if (unlikely(skb == NULL)) + return -ENOMEM; + + mapping = dma_map_single(&bp->pdev->dev, skb->data, bp->rx_buf_size, + DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) { + dev_kfree_skb(skb); + return -ENOMEM; + } + + rx_buf->skb = skb; + dma_unmap_addr_set(rx_buf, mapping, mapping); + + rx_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); + rx_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); + + return 0; +} + +/* note that we are not allocating a new skb, + * we are just moving one from cons to prod + * we are not creating a new mapping, + * so there is no need to check for dma_mapping_error(). + */ +static inline void bnx2x_reuse_rx_skb(struct bnx2x_fastpath *fp, + struct sk_buff *skb, u16 cons, u16 prod) +{ + struct bnx2x *bp = fp->bp; + struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons]; + struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod]; + struct eth_rx_bd *cons_bd = &fp->rx_desc_ring[cons]; + struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod]; + + dma_sync_single_for_device(&bp->pdev->dev, + dma_unmap_addr(cons_rx_buf, mapping), + RX_COPY_THRESH, DMA_FROM_DEVICE); + + prod_rx_buf->skb = cons_rx_buf->skb; + dma_unmap_addr_set(prod_rx_buf, mapping, + dma_unmap_addr(cons_rx_buf, mapping)); + *prod_bd = *cons_bd; +} + +static inline void bnx2x_clear_sge_mask_next_elems(struct bnx2x_fastpath *fp) +{ + int i, j; + + for (i = 1; i <= NUM_RX_SGE_PAGES; i++) { + int idx = RX_SGE_CNT * i - 1; + + for (j = 0; j < 2; j++) { + SGE_MASK_CLEAR_BIT(fp, idx); + idx--; + } + } +} + +static inline void bnx2x_init_sge_ring_bit_mask(struct bnx2x_fastpath *fp) +{ + /* Set the mask to all 1-s: it's faster to compare to 0 than to 0xf-s */ + memset(fp->sge_mask, 0xff, + (NUM_RX_SGE >> RX_SGE_MASK_ELEM_SHIFT)*sizeof(u64)); + + /* Clear the two last indices in the page to 1: + these are the indices that correspond to the "next" element, + hence will never be indicated and should be removed from + the calculations. */ + bnx2x_clear_sge_mask_next_elems(fp); +} +static inline void bnx2x_free_tpa_pool(struct bnx2x *bp, + struct bnx2x_fastpath *fp, int last) +{ + int i; + + for (i = 0; i < last; i++) { + struct sw_rx_bd *rx_buf = &(fp->tpa_pool[i]); + struct sk_buff *skb = rx_buf->skb; + + if (skb == NULL) { + DP(NETIF_MSG_IFDOWN, "tpa bin %d empty on free\n", i); + continue; + } + + if (fp->tpa_state[i] == BNX2X_TPA_START) + dma_unmap_single(&bp->pdev->dev, + dma_unmap_addr(rx_buf, mapping), + bp->rx_buf_size, DMA_FROM_DEVICE); + + dev_kfree_skb(skb); + rx_buf->skb = NULL; + } +} + + +static inline void bnx2x_init_tx_ring(struct bnx2x *bp) +{ + int i, j; + + for_each_queue(bp, j) { + struct bnx2x_fastpath *fp = &bp->fp[j]; + + for (i = 1; i <= NUM_TX_RINGS; i++) { + struct eth_tx_next_bd *tx_next_bd = + &fp->tx_desc_ring[TX_DESC_CNT * i - 1].next_bd; + + tx_next_bd->addr_hi = + cpu_to_le32(U64_HI(fp->tx_desc_mapping + + BCM_PAGE_SIZE*(i % NUM_TX_RINGS))); + tx_next_bd->addr_lo = + cpu_to_le32(U64_LO(fp->tx_desc_mapping + + BCM_PAGE_SIZE*(i % NUM_TX_RINGS))); + } + + fp->tx_db.data.header.header = DOORBELL_HDR_DB_TYPE; + fp->tx_db.data.zero_fill1 = 0; + fp->tx_db.data.prod = 0; + + fp->tx_pkt_prod = 0; + fp->tx_pkt_cons = 0; + fp->tx_bd_prod = 0; + fp->tx_bd_cons = 0; + fp->tx_cons_sb = BNX2X_TX_SB_INDEX; + fp->tx_pkt = 0; + } +} +static inline int bnx2x_has_rx_work(struct bnx2x_fastpath *fp) +{ + u16 rx_cons_sb; + + /* Tell compiler that status block fields can change */ + barrier(); + rx_cons_sb = le16_to_cpu(*fp->rx_cons_sb); + if ((rx_cons_sb & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT) + rx_cons_sb++; + return (fp->rx_comp_cons != rx_cons_sb); +} + +/* HW Lock for shared dual port PHYs */ +void bnx2x_acquire_phy_lock(struct bnx2x *bp); +void bnx2x_release_phy_lock(struct bnx2x *bp); + +void bnx2x_link_report(struct bnx2x *bp); +int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget); +int bnx2x_tx_int(struct bnx2x_fastpath *fp); +void bnx2x_init_rx_rings(struct bnx2x *bp); +netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev); + +int bnx2x_change_mac_addr(struct net_device *dev, void *p); +void bnx2x_tx_timeout(struct net_device *dev); +void bnx2x_vlan_rx_register(struct net_device *dev, struct vlan_group *vlgrp); +void bnx2x_netif_start(struct bnx2x *bp); +void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw); +void bnx2x_free_irq(struct bnx2x *bp, bool disable_only); +int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state); +int bnx2x_resume(struct pci_dev *pdev); +void bnx2x_free_skbs(struct bnx2x *bp); +int bnx2x_change_mtu(struct net_device *dev, int new_mtu); +int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode); +int bnx2x_nic_load(struct bnx2x *bp, int load_mode); +int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state); + +#endif /* BNX2X_CMN_H */ diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c index 0beaefb7a160..0c00e50787f9 100644 --- a/drivers/net/bnx2x/bnx2x_main.c +++ b/drivers/net/bnx2x/bnx2x_main.c @@ -56,6 +56,7 @@ #include "bnx2x_init.h" #include "bnx2x_init_ops.h" #include "bnx2x_dump.h" +#include "bnx2x_cmn.h" #define DRV_MODULE_VERSION "1.52.53-1" #define DRV_MODULE_RELDATE "2010/18/04" @@ -652,7 +653,7 @@ static void bnx2x_panic_dump(struct bnx2x *bp) BNX2X_ERR("end crash dump -----------------\n"); } -static void bnx2x_int_enable(struct bnx2x *bp) +void bnx2x_int_enable(struct bnx2x *bp) { int port = BP_PORT(bp); u32 addr = port ? HC_REG_CONFIG_1 : HC_REG_CONFIG_0; @@ -734,7 +735,7 @@ static void bnx2x_int_disable(struct bnx2x *bp) BNX2X_ERR("BUG! proper val not read from IGU!\n"); } -static void bnx2x_int_disable_sync(struct bnx2x *bp, int disable_hw) +void bnx2x_int_disable_sync(struct bnx2x *bp, int disable_hw) { int msix = (bp->flags & USING_MSIX_FLAG) ? 1 : 0; int i, offset; @@ -804,235 +805,12 @@ static bool bnx2x_trylock_hw_lock(struct bnx2x *bp, u32 resource) return false; } -static inline void bnx2x_ack_sb(struct bnx2x *bp, u8 sb_id, - u8 storm, u16 index, u8 op, u8 update) -{ - u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp)*32 + - COMMAND_REG_INT_ACK); - struct igu_ack_register igu_ack; - - igu_ack.status_block_index = index; - igu_ack.sb_id_and_flags = - ((sb_id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) | - (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) | - (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) | - (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT)); - - DP(BNX2X_MSG_OFF, "write 0x%08x to HC addr 0x%x\n", - (*(u32 *)&igu_ack), hc_addr); - REG_WR(bp, hc_addr, (*(u32 *)&igu_ack)); - - /* Make sure that ACK is written */ - mmiowb(); - barrier(); -} - -static inline void bnx2x_update_fpsb_idx(struct bnx2x_fastpath *fp) -{ - struct host_status_block *fpsb = fp->status_blk; - - barrier(); /* status block is written to by the chip */ - fp->fp_c_idx = fpsb->c_status_block.status_block_index; - fp->fp_u_idx = fpsb->u_status_block.status_block_index; -} - -static u16 bnx2x_ack_int(struct bnx2x *bp) -{ - u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp)*32 + - COMMAND_REG_SIMD_MASK); - u32 result = REG_RD(bp, hc_addr); - - DP(BNX2X_MSG_OFF, "read 0x%08x from HC addr 0x%x\n", - result, hc_addr); - - return result; -} - - -/* - * fast path service functions - */ - -static inline int bnx2x_has_tx_work_unload(struct bnx2x_fastpath *fp) -{ - /* Tell compiler that consumer and producer can change */ - barrier(); - return (fp->tx_pkt_prod != fp->tx_pkt_cons); -} - -/* free skb in the packet ring at pos idx - * return idx of last bd freed - */ -static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp, - u16 idx) -{ - struct sw_tx_bd *tx_buf = &fp->tx_buf_ring[idx]; - struct eth_tx_start_bd *tx_start_bd; - struct eth_tx_bd *tx_data_bd; - struct sk_buff *skb = tx_buf->skb; - u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons; - int nbd; - - /* prefetch skb end pointer to speedup dev_kfree_skb() */ - prefetch(&skb->end); - - DP(BNX2X_MSG_OFF, "pkt_idx %d buff @(%p)->skb %p\n", - idx, tx_buf, skb); - - /* unmap first bd */ - DP(BNX2X_MSG_OFF, "free bd_idx %d\n", bd_idx); - tx_start_bd = &fp->tx_desc_ring[bd_idx].start_bd; - dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd), - BD_UNMAP_LEN(tx_start_bd), PCI_DMA_TODEVICE); - - nbd = le16_to_cpu(tx_start_bd->nbd) - 1; -#ifdef BNX2X_STOP_ON_ERROR - if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) { - BNX2X_ERR("BAD nbd!\n"); - bnx2x_panic(); - } -#endif - new_cons = nbd + tx_buf->first_bd; - - /* Get the next bd */ - bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); - - /* Skip a parse bd... */ - --nbd; - bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); - - /* ...and the TSO split header bd since they have no mapping */ - if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) { - --nbd; - bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); - } - - /* now free frags */ - while (nbd > 0) { - - DP(BNX2X_MSG_OFF, "free frag bd_idx %d\n", bd_idx); - tx_data_bd = &fp->tx_desc_ring[bd_idx].reg_bd; - dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd), - BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE); - if (--nbd) - bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); - } - - /* release skb */ - WARN_ON(!skb); - dev_kfree_skb(skb); - tx_buf->first_bd = 0; - tx_buf->skb = NULL; - - return new_cons; -} - -static inline u16 bnx2x_tx_avail(struct bnx2x_fastpath *fp) -{ - s16 used; - u16 prod; - u16 cons; - - prod = fp->tx_bd_prod; - cons = fp->tx_bd_cons; - - /* NUM_TX_RINGS = number of "next-page" entries - It will be used as a threshold */ - used = SUB_S16(prod, cons) + (s16)NUM_TX_RINGS; - -#ifdef BNX2X_STOP_ON_ERROR - WARN_ON(used < 0); - WARN_ON(used > fp->bp->tx_ring_size); - WARN_ON((fp->bp->tx_ring_size - used) > MAX_TX_AVAIL); -#endif - - return (s16)(fp->bp->tx_ring_size) - used; -} - -static inline int bnx2x_has_tx_work(struct bnx2x_fastpath *fp) -{ - u16 hw_cons; - - /* Tell compiler that status block fields can change */ - barrier(); - hw_cons = le16_to_cpu(*fp->tx_cons_sb); - return hw_cons != fp->tx_pkt_cons; -} - -static int bnx2x_tx_int(struct bnx2x_fastpath *fp) -{ - struct bnx2x *bp = fp->bp; - struct netdev_queue *txq; - u16 hw_cons, sw_cons, bd_cons = fp->tx_bd_cons; - -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) - return -1; -#endif - - txq = netdev_get_tx_queue(bp->dev, fp->index); - hw_cons = le16_to_cpu(*fp->tx_cons_sb); - sw_cons = fp->tx_pkt_cons; - - while (sw_cons != hw_cons) { - u16 pkt_cons; - - pkt_cons = TX_BD(sw_cons); - - /* prefetch(bp->tx_buf_ring[pkt_cons].skb); */ - - DP(NETIF_MSG_TX_DONE, "hw_cons %u sw_cons %u pkt_cons %u\n", - hw_cons, sw_cons, pkt_cons); - -/* if (NEXT_TX_IDX(sw_cons) != hw_cons) { - rmb(); - prefetch(fp->tx_buf_ring[NEXT_TX_IDX(sw_cons)].skb); - } -*/ - bd_cons = bnx2x_free_tx_pkt(bp, fp, pkt_cons); - sw_cons++; - } - - fp->tx_pkt_cons = sw_cons; - fp->tx_bd_cons = bd_cons; - - /* Need to make the tx_bd_cons update visible to start_xmit() - * before checking for netif_tx_queue_stopped(). Without the - * memory barrier, there is a small possibility that - * start_xmit() will miss it and cause the queue to be stopped - * forever. - */ - smp_mb(); - - /* TBD need a thresh? */ - if (unlikely(netif_tx_queue_stopped(txq))) { - /* Taking tx_lock() is needed to prevent reenabling the queue - * while it's empty. This could have happen if rx_action() gets - * suspended in bnx2x_tx_int() after the condition before - * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()): - * - * stops the queue->sees fresh tx_bd_cons->releases the queue-> - * sends some packets consuming the whole queue again-> - * stops the queue - */ - - __netif_tx_lock(txq, smp_processor_id()); - - if ((netif_tx_queue_stopped(txq)) && - (bp->state == BNX2X_STATE_OPEN) && - (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3)) - netif_tx_wake_queue(txq); - - __netif_tx_unlock(txq); - } - return 0; -} #ifdef BCM_CNIC static void bnx2x_cnic_cfc_comp(struct bnx2x *bp, int cid); #endif -static void bnx2x_sp_event(struct bnx2x_fastpath *fp, +void bnx2x_sp_event(struct bnx2x_fastpath *fp, union eth_rx_cqe *rr_cqe) { struct bnx2x *bp = fp->bp; @@ -1116,717 +894,7 @@ static void bnx2x_sp_event(struct bnx2x_fastpath *fp, mb(); /* force bnx2x_wait_ramrod() to see the change */ } -static inline void bnx2x_free_rx_sge(struct bnx2x *bp, - struct bnx2x_fastpath *fp, u16 index) -{ - struct sw_rx_page *sw_buf = &fp->rx_page_ring[index]; - struct page *page = sw_buf->page; - struct eth_rx_sge *sge = &fp->rx_sge_ring[index]; - - /* Skip "next page" elements */ - if (!page) - return; - - dma_unmap_page(&bp->pdev->dev, dma_unmap_addr(sw_buf, mapping), - SGE_PAGE_SIZE*PAGES_PER_SGE, PCI_DMA_FROMDEVICE); - __free_pages(page, PAGES_PER_SGE_SHIFT); - - sw_buf->page = NULL; - sge->addr_hi = 0; - sge->addr_lo = 0; -} - -static inline void bnx2x_free_rx_sge_range(struct bnx2x *bp, - struct bnx2x_fastpath *fp, int last) -{ - int i; - - for (i = 0; i < last; i++) - bnx2x_free_rx_sge(bp, fp, i); -} - -static inline int bnx2x_alloc_rx_sge(struct bnx2x *bp, - struct bnx2x_fastpath *fp, u16 index) -{ - struct page *page = alloc_pages(GFP_ATOMIC, PAGES_PER_SGE_SHIFT); - struct sw_rx_page *sw_buf = &fp->rx_page_ring[index]; - struct eth_rx_sge *sge = &fp->rx_sge_ring[index]; - dma_addr_t mapping; - - if (unlikely(page == NULL)) - return -ENOMEM; - - mapping = dma_map_page(&bp->pdev->dev, page, 0, - SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE); - if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) { - __free_pages(page, PAGES_PER_SGE_SHIFT); - return -ENOMEM; - } - - sw_buf->page = page; - dma_unmap_addr_set(sw_buf, mapping, mapping); - - sge->addr_hi = cpu_to_le32(U64_HI(mapping)); - sge->addr_lo = cpu_to_le32(U64_LO(mapping)); - - return 0; -} - -static inline int bnx2x_alloc_rx_skb(struct bnx2x *bp, - struct bnx2x_fastpath *fp, u16 index) -{ - struct sk_buff *skb; - struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[index]; - struct eth_rx_bd *rx_bd = &fp->rx_desc_ring[index]; - dma_addr_t mapping; - - skb = netdev_alloc_skb(bp->dev, bp->rx_buf_size); - if (unlikely(skb == NULL)) - return -ENOMEM; - - mapping = dma_map_single(&bp->pdev->dev, skb->data, bp->rx_buf_size, - DMA_FROM_DEVICE); - if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) { - dev_kfree_skb(skb); - return -ENOMEM; - } - - rx_buf->skb = skb; - dma_unmap_addr_set(rx_buf, mapping, mapping); - - rx_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); - rx_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); - - return 0; -} - -/* note that we are not allocating a new skb, - * we are just moving one from cons to prod - * we are not creating a new mapping, - * so there is no need to check for dma_mapping_error(). - */ -static void bnx2x_reuse_rx_skb(struct bnx2x_fastpath *fp, - struct sk_buff *skb, u16 cons, u16 prod) -{ - struct bnx2x *bp = fp->bp; - struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons]; - struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod]; - struct eth_rx_bd *cons_bd = &fp->rx_desc_ring[cons]; - struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod]; - - dma_sync_single_for_device(&bp->pdev->dev, - dma_unmap_addr(cons_rx_buf, mapping), - RX_COPY_THRESH, DMA_FROM_DEVICE); - - prod_rx_buf->skb = cons_rx_buf->skb; - dma_unmap_addr_set(prod_rx_buf, mapping, - dma_unmap_addr(cons_rx_buf, mapping)); - *prod_bd = *cons_bd; -} - -static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp, - u16 idx) -{ - u16 last_max = fp->last_max_sge; - - if (SUB_S16(idx, last_max) > 0) - fp->last_max_sge = idx; -} - -static void bnx2x_clear_sge_mask_next_elems(struct bnx2x_fastpath *fp) -{ - int i, j; - - for (i = 1; i <= NUM_RX_SGE_PAGES; i++) { - int idx = RX_SGE_CNT * i - 1; - - for (j = 0; j < 2; j++) { - SGE_MASK_CLEAR_BIT(fp, idx); - idx--; - } - } -} - -static void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp, - struct eth_fast_path_rx_cqe *fp_cqe) -{ - struct bnx2x *bp = fp->bp; - u16 sge_len = SGE_PAGE_ALIGN(le16_to_cpu(fp_cqe->pkt_len) - - le16_to_cpu(fp_cqe->len_on_bd)) >> - SGE_PAGE_SHIFT; - u16 last_max, last_elem, first_elem; - u16 delta = 0; - u16 i; - - if (!sge_len) - return; - - /* First mark all used pages */ - for (i = 0; i < sge_len; i++) - SGE_MASK_CLEAR_BIT(fp, RX_SGE(le16_to_cpu(fp_cqe->sgl[i]))); - - DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n", - sge_len - 1, le16_to_cpu(fp_cqe->sgl[sge_len - 1])); - - /* Here we assume that the last SGE index is the biggest */ - prefetch((void *)(fp->sge_mask)); - bnx2x_update_last_max_sge(fp, le16_to_cpu(fp_cqe->sgl[sge_len - 1])); - - last_max = RX_SGE(fp->last_max_sge); - last_elem = last_max >> RX_SGE_MASK_ELEM_SHIFT; - first_elem = RX_SGE(fp->rx_sge_prod) >> RX_SGE_MASK_ELEM_SHIFT; - - /* If ring is not full */ - if (last_elem + 1 != first_elem) - last_elem++; - - /* Now update the prod */ - for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) { - if (likely(fp->sge_mask[i])) - break; - - fp->sge_mask[i] = RX_SGE_MASK_ELEM_ONE_MASK; - delta += RX_SGE_MASK_ELEM_SZ; - } - - if (delta > 0) { - fp->rx_sge_prod += delta; - /* clear page-end entries */ - bnx2x_clear_sge_mask_next_elems(fp); - } - - DP(NETIF_MSG_RX_STATUS, - "fp->last_max_sge = %d fp->rx_sge_prod = %d\n", - fp->last_max_sge, fp->rx_sge_prod); -} - -static inline void bnx2x_init_sge_ring_bit_mask(struct bnx2x_fastpath *fp) -{ - /* Set the mask to all 1-s: it's faster to compare to 0 than to 0xf-s */ - memset(fp->sge_mask, 0xff, - (NUM_RX_SGE >> RX_SGE_MASK_ELEM_SHIFT)*sizeof(u64)); - - /* Clear the two last indices in the page to 1: - these are the indices that correspond to the "next" element, - hence will never be indicated and should be removed from - the calculations. */ - bnx2x_clear_sge_mask_next_elems(fp); -} - -static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue, - struct sk_buff *skb, u16 cons, u16 prod) -{ - struct bnx2x *bp = fp->bp; - struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons]; - struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod]; - struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod]; - dma_addr_t mapping; - - /* move empty skb from pool to prod and map it */ - prod_rx_buf->skb = fp->tpa_pool[queue].skb; - mapping = dma_map_single(&bp->pdev->dev, fp->tpa_pool[queue].skb->data, - bp->rx_buf_size, DMA_FROM_DEVICE); - dma_unmap_addr_set(prod_rx_buf, mapping, mapping); - - /* move partial skb from cons to pool (don't unmap yet) */ - fp->tpa_pool[queue] = *cons_rx_buf; - - /* mark bin state as start - print error if current state != stop */ - if (fp->tpa_state[queue] != BNX2X_TPA_STOP) - BNX2X_ERR("start of bin not in stop [%d]\n", queue); - - fp->tpa_state[queue] = BNX2X_TPA_START; - - /* point prod_bd to new skb */ - prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); - prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); - -#ifdef BNX2X_STOP_ON_ERROR - fp->tpa_queue_used |= (1 << queue); -#ifdef _ASM_GENERIC_INT_L64_H - DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%lx\n", -#else - DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n", -#endif - fp->tpa_queue_used); -#endif -} - -static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp, - struct sk_buff *skb, - struct eth_fast_path_rx_cqe *fp_cqe, - u16 cqe_idx) -{ - struct sw_rx_page *rx_pg, old_rx_pg; - u16 len_on_bd = le16_to_cpu(fp_cqe->len_on_bd); - u32 i, frag_len, frag_size, pages; - int err; - int j; - - frag_size = le16_to_cpu(fp_cqe->pkt_len) - len_on_bd; - pages = SGE_PAGE_ALIGN(frag_size) >> SGE_PAGE_SHIFT; - - /* This is needed in order to enable forwarding support */ - if (frag_size) - skb_shinfo(skb)->gso_size = min((u32)SGE_PAGE_SIZE, - max(frag_size, (u32)len_on_bd)); - -#ifdef BNX2X_STOP_ON_ERROR - if (pages > min_t(u32, 8, MAX_SKB_FRAGS)*SGE_PAGE_SIZE*PAGES_PER_SGE) { - BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n", - pages, cqe_idx); - BNX2X_ERR("fp_cqe->pkt_len = %d fp_cqe->len_on_bd = %d\n", - fp_cqe->pkt_len, len_on_bd); - bnx2x_panic(); - return -EINVAL; - } -#endif - - /* Run through the SGL and compose the fragmented skb */ - for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) { - u16 sge_idx = RX_SGE(le16_to_cpu(fp_cqe->sgl[j])); - - /* FW gives the indices of the SGE as if the ring is an array - (meaning that "next" element will consume 2 indices) */ - frag_len = min(frag_size, (u32)(SGE_PAGE_SIZE*PAGES_PER_SGE)); - rx_pg = &fp->rx_page_ring[sge_idx]; - old_rx_pg = *rx_pg; - - /* If we fail to allocate a substitute page, we simply stop - where we are and drop the whole packet */ - err = bnx2x_alloc_rx_sge(bp, fp, sge_idx); - if (unlikely(err)) { - fp->eth_q_stats.rx_skb_alloc_failed++; - return err; - } - - /* Unmap the page as we r going to pass it to the stack */ - dma_unmap_page(&bp->pdev->dev, - dma_unmap_addr(&old_rx_pg, mapping), - SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE); - - /* Add one frag and update the appropriate fields in the skb */ - skb_fill_page_desc(skb, j, old_rx_pg.page, 0, frag_len); - - skb->data_len += frag_len; - skb->truesize += frag_len; - skb->len += frag_len; - - frag_size -= frag_len; - } - - return 0; -} - -static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp, - u16 queue, int pad, int len, union eth_rx_cqe *cqe, - u16 cqe_idx) -{ - struct sw_rx_bd *rx_buf = &fp->tpa_pool[queue]; - struct sk_buff *skb = rx_buf->skb; - /* alloc new skb */ - struct sk_buff *new_skb = netdev_alloc_skb(bp->dev, bp->rx_buf_size); - - /* Unmap skb in the pool anyway, as we are going to change - pool entry status to BNX2X_TPA_STOP even if new skb allocation - fails. */ - dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping), - bp->rx_buf_size, DMA_FROM_DEVICE); - - if (likely(new_skb)) { - /* fix ip xsum and give it to the stack */ - /* (no need to map the new skb) */ -#ifdef BCM_VLAN - int is_vlan_cqe = - (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) & - PARSING_FLAGS_VLAN); - int is_not_hwaccel_vlan_cqe = - (is_vlan_cqe && (!(bp->flags & HW_VLAN_RX_FLAG))); -#endif - - prefetch(skb); - prefetch(((char *)(skb)) + 128); - -#ifdef BNX2X_STOP_ON_ERROR - if (pad + len > bp->rx_buf_size) { - BNX2X_ERR("skb_put is about to fail... " - "pad %d len %d rx_buf_size %d\n", - pad, len, bp->rx_buf_size); - bnx2x_panic(); - return; - } -#endif - - skb_reserve(skb, pad); - skb_put(skb, len); - - skb->protocol = eth_type_trans(skb, bp->dev); - skb->ip_summed = CHECKSUM_UNNECESSARY; - - { - struct iphdr *iph; - - iph = (struct iphdr *)skb->data; -#ifdef BCM_VLAN - /* If there is no Rx VLAN offloading - - take VLAN tag into an account */ - if (unlikely(is_not_hwaccel_vlan_cqe)) - iph = (struct iphdr *)((u8 *)iph + VLAN_HLEN); -#endif - iph->check = 0; - iph->check = ip_fast_csum((u8 *)iph, iph->ihl); - } - - if (!bnx2x_fill_frag_skb(bp, fp, skb, - &cqe->fast_path_cqe, cqe_idx)) { -#ifdef BCM_VLAN - if ((bp->vlgrp != NULL) && is_vlan_cqe && - (!is_not_hwaccel_vlan_cqe)) - vlan_gro_receive(&fp->napi, bp->vlgrp, - le16_to_cpu(cqe->fast_path_cqe. - vlan_tag), skb); - else -#endif - napi_gro_receive(&fp->napi, skb); - } else { - DP(NETIF_MSG_RX_STATUS, "Failed to allocate new pages" - " - dropping packet!\n"); - dev_kfree_skb(skb); - } - - - /* put new skb in bin */ - fp->tpa_pool[queue].skb = new_skb; - - } else { - /* else drop the packet and keep the buffer in the bin */ - DP(NETIF_MSG_RX_STATUS, - "Failed to allocate new skb - dropping packet!\n"); - fp->eth_q_stats.rx_skb_alloc_failed++; - } - - fp->tpa_state[queue] = BNX2X_TPA_STOP; -} - -static inline void bnx2x_update_rx_prod(struct bnx2x *bp, - struct bnx2x_fastpath *fp, - u16 bd_prod, u16 rx_comp_prod, - u16 rx_sge_prod) -{ - struct ustorm_eth_rx_producers rx_prods = {0}; - int i; - - /* Update producers */ - rx_prods.bd_prod = bd_prod; - rx_prods.cqe_prod = rx_comp_prod; - rx_prods.sge_prod = rx_sge_prod; - - /* - * Make sure that the BD and SGE data is updated before updating the - * producers since FW might read the BD/SGE right after the producer - * is updated. - * This is only applicable for weak-ordered memory model archs such - * as IA-64. The following barrier is also mandatory since FW will - * assumes BDs must have buffers. - */ - wmb(); - - for (i = 0; i < sizeof(struct ustorm_eth_rx_producers)/4; i++) - REG_WR(bp, BAR_USTRORM_INTMEM + - USTORM_RX_PRODS_OFFSET(BP_PORT(bp), fp->cl_id) + i*4, - ((u32 *)&rx_prods)[i]); - - mmiowb(); /* keep prod updates ordered */ - - DP(NETIF_MSG_RX_STATUS, - "queue[%d]: wrote bd_prod %u cqe_prod %u sge_prod %u\n", - fp->index, bd_prod, rx_comp_prod, rx_sge_prod); -} - -/* Set Toeplitz hash value in the skb using the value from the - * CQE (calculated by HW). - */ -static inline void bnx2x_set_skb_rxhash(struct bnx2x *bp, union eth_rx_cqe *cqe, - struct sk_buff *skb) -{ - /* Set Toeplitz hash from CQE */ - if ((bp->dev->features & NETIF_F_RXHASH) && - (cqe->fast_path_cqe.status_flags & - ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG)) - skb->rxhash = - le32_to_cpu(cqe->fast_path_cqe.rss_hash_result); -} - -static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget) -{ - struct bnx2x *bp = fp->bp; - u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons; - u16 hw_comp_cons, sw_comp_cons, sw_comp_prod; - int rx_pkt = 0; - -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) - return 0; -#endif - - /* CQ "next element" is of the size of the regular element, - that's why it's ok here */ - hw_comp_cons = le16_to_cpu(*fp->rx_cons_sb); - if ((hw_comp_cons & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT) - hw_comp_cons++; - - bd_cons = fp->rx_bd_cons; - bd_prod = fp->rx_bd_prod; - bd_prod_fw = bd_prod; - sw_comp_cons = fp->rx_comp_cons; - sw_comp_prod = fp->rx_comp_prod; - - /* Memory barrier necessary as speculative reads of the rx - * buffer can be ahead of the index in the status block - */ - rmb(); - - DP(NETIF_MSG_RX_STATUS, - "queue[%d]: hw_comp_cons %u sw_comp_cons %u\n", - fp->index, hw_comp_cons, sw_comp_cons); - - while (sw_comp_cons != hw_comp_cons) { - struct sw_rx_bd *rx_buf = NULL; - struct sk_buff *skb; - union eth_rx_cqe *cqe; - u8 cqe_fp_flags; - u16 len, pad; - - comp_ring_cons = RCQ_BD(sw_comp_cons); - bd_prod = RX_BD(bd_prod); - bd_cons = RX_BD(bd_cons); - - /* Prefetch the page containing the BD descriptor - at producer's index. It will be needed when new skb is - allocated */ - prefetch((void *)(PAGE_ALIGN((unsigned long) - (&fp->rx_desc_ring[bd_prod])) - - PAGE_SIZE + 1)); - - cqe = &fp->rx_comp_ring[comp_ring_cons]; - cqe_fp_flags = cqe->fast_path_cqe.type_error_flags; - - DP(NETIF_MSG_RX_STATUS, "CQE type %x err %x status %x" - " queue %x vlan %x len %u\n", CQE_TYPE(cqe_fp_flags), - cqe_fp_flags, cqe->fast_path_cqe.status_flags, - le32_to_cpu(cqe->fast_path_cqe.rss_hash_result), - le16_to_cpu(cqe->fast_path_cqe.vlan_tag), - le16_to_cpu(cqe->fast_path_cqe.pkt_len)); - - /* is this a slowpath msg? */ - if (unlikely(CQE_TYPE(cqe_fp_flags))) { - bnx2x_sp_event(fp, cqe); - goto next_cqe; - - /* this is an rx packet */ - } else { - rx_buf = &fp->rx_buf_ring[bd_cons]; - skb = rx_buf->skb; - prefetch(skb); - len = le16_to_cpu(cqe->fast_path_cqe.pkt_len); - pad = cqe->fast_path_cqe.placement_offset; - - /* If CQE is marked both TPA_START and TPA_END - it is a non-TPA CQE */ - if ((!fp->disable_tpa) && - (TPA_TYPE(cqe_fp_flags) != - (TPA_TYPE_START | TPA_TYPE_END))) { - u16 queue = cqe->fast_path_cqe.queue_index; - - if (TPA_TYPE(cqe_fp_flags) == TPA_TYPE_START) { - DP(NETIF_MSG_RX_STATUS, - "calling tpa_start on queue %d\n", - queue); - - bnx2x_tpa_start(fp, queue, skb, - bd_cons, bd_prod); - - /* Set Toeplitz hash for an LRO skb */ - bnx2x_set_skb_rxhash(bp, cqe, skb); - - goto next_rx; - } - - if (TPA_TYPE(cqe_fp_flags) == TPA_TYPE_END) { - DP(NETIF_MSG_RX_STATUS, - "calling tpa_stop on queue %d\n", - queue); - - if (!BNX2X_RX_SUM_FIX(cqe)) - BNX2X_ERR("STOP on none TCP " - "data\n"); - - /* This is a size of the linear data - on this skb */ - len = le16_to_cpu(cqe->fast_path_cqe. - len_on_bd); - bnx2x_tpa_stop(bp, fp, queue, pad, - len, cqe, comp_ring_cons); -#ifdef BNX2X_STOP_ON_ERROR - if (bp->panic) - return 0; -#endif - - bnx2x_update_sge_prod(fp, - &cqe->fast_path_cqe); - goto next_cqe; - } - } - - dma_sync_single_for_device(&bp->pdev->dev, - dma_unmap_addr(rx_buf, mapping), - pad + RX_COPY_THRESH, - DMA_FROM_DEVICE); - prefetch(((char *)(skb)) + 128); - - /* is this an error packet? */ - if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) { - DP(NETIF_MSG_RX_ERR, - "ERROR flags %x rx packet %u\n", - cqe_fp_flags, sw_comp_cons); - fp->eth_q_stats.rx_err_discard_pkt++; - goto reuse_rx; - } - - /* Since we don't have a jumbo ring - * copy small packets if mtu > 1500 - */ - if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) && - (len <= RX_COPY_THRESH)) { - struct sk_buff *new_skb; - - new_skb = netdev_alloc_skb(bp->dev, - len + pad); - if (new_skb == NULL) { - DP(NETIF_MSG_RX_ERR, - "ERROR packet dropped " - "because of alloc failure\n"); - fp->eth_q_stats.rx_skb_alloc_failed++; - goto reuse_rx; - } - - /* aligned copy */ - skb_copy_from_linear_data_offset(skb, pad, - new_skb->data + pad, len); - skb_reserve(new_skb, pad); - skb_put(new_skb, len); - - bnx2x_reuse_rx_skb(fp, skb, bd_cons, bd_prod); - - skb = new_skb; - - } else - if (likely(bnx2x_alloc_rx_skb(bp, fp, bd_prod) == 0)) { - dma_unmap_single(&bp->pdev->dev, - dma_unmap_addr(rx_buf, mapping), - bp->rx_buf_size, - DMA_FROM_DEVICE); - skb_reserve(skb, pad); - skb_put(skb, len); - - } else { - DP(NETIF_MSG_RX_ERR, - "ERROR packet dropped because " - "of alloc failure\n"); - fp->eth_q_stats.rx_skb_alloc_failed++; -reuse_rx: - bnx2x_reuse_rx_skb(fp, skb, bd_cons, bd_prod); - goto next_rx; - } - - skb->protocol = eth_type_trans(skb, bp->dev); - - /* Set Toeplitz hash for a none-LRO skb */ - bnx2x_set_skb_rxhash(bp, cqe, skb); - - skb->ip_summed = CHECKSUM_NONE; - if (bp->rx_csum) { - if (likely(BNX2X_RX_CSUM_OK(cqe))) - skb->ip_summed = CHECKSUM_UNNECESSARY; - else - fp->eth_q_stats.hw_csum_err++; - } - } - - skb_record_rx_queue(skb, fp->index); - -#ifdef BCM_VLAN - if ((bp->vlgrp != NULL) && (bp->flags & HW_VLAN_RX_FLAG) && - (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) & - PARSING_FLAGS_VLAN)) - vlan_gro_receive(&fp->napi, bp->vlgrp, - le16_to_cpu(cqe->fast_path_cqe.vlan_tag), skb); - else -#endif - napi_gro_receive(&fp->napi, skb); - - -next_rx: - rx_buf->skb = NULL; - - bd_cons = NEXT_RX_IDX(bd_cons); - bd_prod = NEXT_RX_IDX(bd_prod); - bd_prod_fw = NEXT_RX_IDX(bd_prod_fw); - rx_pkt++; -next_cqe: - sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod); - sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons); - - if (rx_pkt == budget) - break; - } /* while */ - - fp->rx_bd_cons = bd_cons; - fp->rx_bd_prod = bd_prod_fw; - fp->rx_comp_cons = sw_comp_cons; - fp->rx_comp_prod = sw_comp_prod; - - /* Update producers */ - bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod, - fp->rx_sge_prod); - - fp->rx_pkt += rx_pkt; - fp->rx_calls++; - - return rx_pkt; -} - -static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie) -{ - struct bnx2x_fastpath *fp = fp_cookie; - struct bnx2x *bp = fp->bp; - - /* Return here if interrupt is disabled */ - if (unlikely(atomic_read(&bp->intr_sem) != 0)) { - DP(NETIF_MSG_INTR, "called but intr_sem not 0, returning\n"); - return IRQ_HANDLED; - } - - DP(BNX2X_MSG_FP, "got an MSI-X interrupt on IDX:SB [%d:%d]\n", - fp->index, fp->sb_id); - bnx2x_ack_sb(bp, fp->sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0); - -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) - return IRQ_HANDLED; -#endif - - /* Handle Rx and Tx according to MSI-X vector */ - prefetch(fp->rx_cons_sb); - prefetch(fp->tx_cons_sb); - prefetch(&fp->status_blk->u_status_block.status_block_index); - prefetch(&fp->status_blk->c_status_block.status_block_index); - napi_schedule(&bnx2x_fp(bp, fp->index, napi)); - - return IRQ_HANDLED; -} - -static irqreturn_t bnx2x_interrupt(int irq, void *dev_instance) +irqreturn_t bnx2x_interrupt(int irq, void *dev_instance) { struct bnx2x *bp = netdev_priv(dev_instance); u16 status = bnx2x_ack_int(bp); @@ -1900,7 +968,6 @@ static irqreturn_t bnx2x_interrupt(int irq, void *dev_instance) /* end of fast path */ -static void bnx2x_stats_handle(struct bnx2x *bp, enum bnx2x_stats_event event); /* Link */ @@ -1908,7 +975,7 @@ static void bnx2x_stats_handle(struct bnx2x *bp, enum bnx2x_stats_event event); * General service functions */ -static int bnx2x_acquire_hw_lock(struct bnx2x *bp, u32 resource) +int bnx2x_acquire_hw_lock(struct bnx2x *bp, u32 resource) { u32 lock_status; u32 resource_bit = (1 << resource); @@ -1953,7 +1020,7 @@ static int bnx2x_acquire_hw_lock(struct bnx2x *bp, u32 resource) return -EAGAIN; } -static int bnx2x_release_hw_lock(struct bnx2x *bp, u32 resource) +int bnx2x_release_hw_lock(struct bnx2x *bp, u32 resource) { u32 lock_status; u32 resource_bit = (1 << resource); @@ -1989,22 +1056,6 @@ static int bnx2x_release_hw_lock(struct bnx2x *bp, u32 resource) return 0; } -/* HW Lock for shared dual port PHYs */ -static void bnx2x_acquire_phy_lock(struct bnx2x *bp) -{ - mutex_lock(&bp->port.phy_mutex); - - if (bp->port.need_hw_lock) - bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO); -} - -static void bnx2x_release_phy_lock(struct bnx2x *bp) -{ - if (bp->port.need_hw_lock) - bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO); - - mutex_unlock(&bp->port.phy_mutex); -} int bnx2x_get_gpio(struct bnx2x *bp, int gpio_num, u8 port) { @@ -2181,7 +1232,7 @@ static int bnx2x_set_spio(struct bnx2x *bp, int spio_num, u32 mode) return 0; } -static void bnx2x_calc_fc_adv(struct bnx2x *bp) +void bnx2x_calc_fc_adv(struct bnx2x *bp) { switch (bp->link_vars.ieee_fc & MDIO_COMBO_IEEE0_AUTO_NEG_ADV_PAUSE_MASK) { @@ -2206,58 +1257,8 @@ static void bnx2x_calc_fc_adv(struct bnx2x *bp) } } -static void bnx2x_link_report(struct bnx2x *bp) -{ - if (bp->flags & MF_FUNC_DIS) { - netif_carrier_off(bp->dev); - netdev_err(bp->dev, "NIC Link is Down\n"); - return; - } - - if (bp->link_vars.link_up) { - u16 line_speed; - - if (bp->state == BNX2X_STATE_OPEN) - netif_carrier_on(bp->dev); - netdev_info(bp->dev, "NIC Link is Up, "); - - line_speed = bp->link_vars.line_speed; - if (IS_E1HMF(bp)) { - u16 vn_max_rate; - - vn_max_rate = - ((bp->mf_config & FUNC_MF_CFG_MAX_BW_MASK) >> - FUNC_MF_CFG_MAX_BW_SHIFT) * 100; - if (vn_max_rate < line_speed) - line_speed = vn_max_rate; - } - pr_cont("%d Mbps ", line_speed); - - if (bp->link_vars.duplex == DUPLEX_FULL) - pr_cont("full duplex"); - else - pr_cont("half duplex"); - - if (bp->link_vars.flow_ctrl != BNX2X_FLOW_CTRL_NONE) { - if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX) { - pr_cont(", receive "); - if (bp->link_vars.flow_ctrl & - BNX2X_FLOW_CTRL_TX) - pr_cont("& transmit "); - } else { - pr_cont(", transmit "); - } - pr_cont("flow control ON"); - } - pr_cont("\n"); - - } else { /* link_down */ - netif_carrier_off(bp->dev); - netdev_err(bp->dev, "NIC Link is Down\n"); - } -} -static u8 bnx2x_initial_phy_init(struct bnx2x *bp, int load_mode) +u8 bnx2x_initial_phy_init(struct bnx2x *bp, int load_mode) { if (!BP_NOMCP(bp)) { u8 rc; @@ -2292,7 +1293,7 @@ static u8 bnx2x_initial_phy_init(struct bnx2x *bp, int load_mode) return -EINVAL; } -static void bnx2x_link_set(struct bnx2x *bp) +void bnx2x_link_set(struct bnx2x *bp) { if (!BP_NOMCP(bp)) { bnx2x_acquire_phy_lock(bp); @@ -2314,7 +1315,7 @@ static void bnx2x__link_reset(struct bnx2x *bp) BNX2X_ERR("Bootcode is missing - can not reset link\n"); } -static u8 bnx2x_link_test(struct bnx2x *bp) +u8 bnx2x_link_test(struct bnx2x *bp) { u8 rc = 0; @@ -2546,7 +1547,7 @@ static void bnx2x_link_attn(struct bnx2x *bp) } } -static void bnx2x__link_status_update(struct bnx2x *bp) +void bnx2x__link_status_update(struct bnx2x *bp) { if ((bp->state != BNX2X_STATE_OPEN) || (bp->flags & MF_FUNC_DIS)) return; @@ -2627,9 +1628,6 @@ u32 bnx2x_fw_command(struct bnx2x *bp, u32 command) return rc; } -static void bnx2x_set_eth_mac_addr_e1h(struct bnx2x *bp, int set); -static void bnx2x_set_rx_mode(struct net_device *dev); - static void bnx2x_e1h_disable(struct bnx2x *bp) { int port = BP_PORT(bp); @@ -2757,7 +1755,7 @@ static inline void bnx2x_sp_prod_update(struct bnx2x *bp) } /* the slow path queue is odd since completions arrive on the fastpath ring */ -static int bnx2x_sp_post(struct bnx2x *bp, int command, int cid, +int bnx2x_sp_post(struct bnx2x *bp, int command, int cid, u32 data_hi, u32 data_lo, int common) { struct eth_spe *spe; @@ -3169,10 +2167,6 @@ static inline void bnx2x_attn_int_deasserted3(struct bnx2x *bp, u32 attn) } } -static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode); -static int bnx2x_nic_load(struct bnx2x *bp, int load_mode); - - #define BNX2X_MISC_GEN_REG MISC_REG_GENERIC_POR_1 #define LOAD_COUNTER_BITS 16 /* Number of bits for load counter */ #define LOAD_COUNTER_MASK (((u32)0x1 << LOAD_COUNTER_BITS) - 1) @@ -3206,7 +2200,7 @@ static inline void bnx2x_set_reset_in_progress(struct bnx2x *bp) /* * should be run under rtnl lock */ -static inline bool bnx2x_reset_is_done(struct bnx2x *bp) +bool bnx2x_reset_is_done(struct bnx2x *bp) { u32 val = REG_RD(bp, BNX2X_MISC_GEN_REG); DP(NETIF_MSG_HW, "GEN_REG_VAL=0x%08x\n", val); @@ -3216,7 +2210,7 @@ static inline bool bnx2x_reset_is_done(struct bnx2x *bp) /* * should be run under rtnl lock */ -static inline void bnx2x_inc_load_cnt(struct bnx2x *bp) +inline void bnx2x_inc_load_cnt(struct bnx2x *bp) { u32 val1, val = REG_RD(bp, BNX2X_MISC_GEN_REG); @@ -3231,7 +2225,7 @@ static inline void bnx2x_inc_load_cnt(struct bnx2x *bp) /* * should be run under rtnl lock */ -static inline u32 bnx2x_dec_load_cnt(struct bnx2x *bp) +u32 bnx2x_dec_load_cnt(struct bnx2x *bp) { u32 val1, val = REG_RD(bp, BNX2X_MISC_GEN_REG); @@ -3449,7 +2443,7 @@ static inline bool bnx2x_parity_attn(struct bnx2x *bp, u32 sig0, u32 sig1, return false; } -static bool bnx2x_chk_parity_attn(struct bnx2x *bp) +bool bnx2x_chk_parity_attn(struct bnx2x *bp) { struct attn_route attn; int port = BP_PORT(bp); @@ -3627,7 +2621,7 @@ static void bnx2x_sp_task(struct work_struct *work) IGU_INT_ENABLE, 1); } -static irqreturn_t bnx2x_msix_sp_int(int irq, void *dev_instance) +irqreturn_t bnx2x_msix_sp_int(int irq, void *dev_instance) { struct net_device *dev = dev_instance; struct bnx2x *bp = netdev_priv(dev); @@ -4859,7 +3853,7 @@ static const struct { } }; -static void bnx2x_stats_handle(struct bnx2x *bp, enum bnx2x_stats_event event) +void bnx2x_stats_handle(struct bnx2x *bp, enum bnx2x_stats_event event) { enum bnx2x_stats_state state = bp->stats_state; @@ -5114,7 +4108,7 @@ static void bnx2x_zero_sb(struct bnx2x *bp, int sb_id) CSTORM_SB_STATUS_BLOCK_C_SIZE / 4); } -static void bnx2x_init_sb(struct bnx2x *bp, struct host_status_block *sb, +void bnx2x_init_sb(struct bnx2x *bp, struct host_status_block *sb, dma_addr_t mapping, int sb_id) { int port = BP_PORT(bp); @@ -5293,7 +4287,7 @@ static void bnx2x_init_def_sb(struct bnx2x *bp, bnx2x_ack_sb(bp, sb_id, CSTORM_ID, 0, IGU_INT_ENABLE, 0); } -static void bnx2x_update_coalesce(struct bnx2x *bp) +void bnx2x_update_coalesce(struct bnx2x *bp) { int port = BP_PORT(bp); int i; @@ -5323,207 +4317,6 @@ static void bnx2x_update_coalesce(struct bnx2x *bp) } } -static inline void bnx2x_free_tpa_pool(struct bnx2x *bp, - struct bnx2x_fastpath *fp, int last) -{ - int i; - - for (i = 0; i < last; i++) { - struct sw_rx_bd *rx_buf = &(fp->tpa_pool[i]); - struct sk_buff *skb = rx_buf->skb; - - if (skb == NULL) { - DP(NETIF_MSG_IFDOWN, "tpa bin %d empty on free\n", i); - continue; - } - - if (fp->tpa_state[i] == BNX2X_TPA_START) - dma_unmap_single(&bp->pdev->dev, - dma_unmap_addr(rx_buf, mapping), - bp->rx_buf_size, DMA_FROM_DEVICE); - - dev_kfree_skb(skb); - rx_buf->skb = NULL; - } -} - -static void bnx2x_init_rx_rings(struct bnx2x *bp) -{ - int func = BP_FUNC(bp); - int max_agg_queues = CHIP_IS_E1(bp) ? ETH_MAX_AGGREGATION_QUEUES_E1 : - ETH_MAX_AGGREGATION_QUEUES_E1H; - u16 ring_prod, cqe_ring_prod; - int i, j; - - bp->rx_buf_size = bp->dev->mtu + ETH_OVREHEAD + BNX2X_RX_ALIGN; - DP(NETIF_MSG_IFUP, - "mtu %d rx_buf_size %d\n", bp->dev->mtu, bp->rx_buf_size); - - if (bp->flags & TPA_ENABLE_FLAG) { - - for_each_queue(bp, j) { - struct bnx2x_fastpath *fp = &bp->fp[j]; - - for (i = 0; i < max_agg_queues; i++) { - fp->tpa_pool[i].skb = - netdev_alloc_skb(bp->dev, bp->rx_buf_size); - if (!fp->tpa_pool[i].skb) { - BNX2X_ERR("Failed to allocate TPA " - "skb pool for queue[%d] - " - "disabling TPA on this " - "queue!\n", j); - bnx2x_free_tpa_pool(bp, fp, i); - fp->disable_tpa = 1; - break; - } - dma_unmap_addr_set((struct sw_rx_bd *) - &bp->fp->tpa_pool[i], - mapping, 0); - fp->tpa_state[i] = BNX2X_TPA_STOP; - } - } - } - - for_each_queue(bp, j) { - struct bnx2x_fastpath *fp = &bp->fp[j]; - - fp->rx_bd_cons = 0; - fp->rx_cons_sb = BNX2X_RX_SB_INDEX; - fp->rx_bd_cons_sb = BNX2X_RX_SB_BD_INDEX; - - /* "next page" elements initialization */ - /* SGE ring */ - for (i = 1; i <= NUM_RX_SGE_PAGES; i++) { - struct eth_rx_sge *sge; - - sge = &fp->rx_sge_ring[RX_SGE_CNT * i - 2]; - sge->addr_hi = - cpu_to_le32(U64_HI(fp->rx_sge_mapping + - BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES))); - sge->addr_lo = - cpu_to_le32(U64_LO(fp->rx_sge_mapping + - BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES))); - } - - bnx2x_init_sge_ring_bit_mask(fp); - - /* RX BD ring */ - for (i = 1; i <= NUM_RX_RINGS; i++) { - struct eth_rx_bd *rx_bd; - - rx_bd = &fp->rx_desc_ring[RX_DESC_CNT * i - 2]; - rx_bd->addr_hi = - cpu_to_le32(U64_HI(fp->rx_desc_mapping + - BCM_PAGE_SIZE*(i % NUM_RX_RINGS))); - rx_bd->addr_lo = - cpu_to_le32(U64_LO(fp->rx_desc_mapping + - BCM_PAGE_SIZE*(i % NUM_RX_RINGS))); - } - - /* CQ ring */ - for (i = 1; i <= NUM_RCQ_RINGS; i++) { - struct eth_rx_cqe_next_page *nextpg; - - nextpg = (struct eth_rx_cqe_next_page *) - &fp->rx_comp_ring[RCQ_DESC_CNT * i - 1]; - nextpg->addr_hi = - cpu_to_le32(U64_HI(fp->rx_comp_mapping + - BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS))); - nextpg->addr_lo = - cpu_to_le32(U64_LO(fp->rx_comp_mapping + - BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS))); - } - - /* Allocate SGEs and initialize the ring elements */ - for (i = 0, ring_prod = 0; - i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) { - - if (bnx2x_alloc_rx_sge(bp, fp, ring_prod) < 0) { - BNX2X_ERR("was only able to allocate " - "%d rx sges\n", i); - BNX2X_ERR("disabling TPA for queue[%d]\n", j); - /* Cleanup already allocated elements */ - bnx2x_free_rx_sge_range(bp, fp, ring_prod); - bnx2x_free_tpa_pool(bp, fp, max_agg_queues); - fp->disable_tpa = 1; - ring_prod = 0; - break; - } - ring_prod = NEXT_SGE_IDX(ring_prod); - } - fp->rx_sge_prod = ring_prod; - - /* Allocate BDs and initialize BD ring */ - fp->rx_comp_cons = 0; - cqe_ring_prod = ring_prod = 0; - for (i = 0; i < bp->rx_ring_size; i++) { - if (bnx2x_alloc_rx_skb(bp, fp, ring_prod) < 0) { - BNX2X_ERR("was only able to allocate " - "%d rx skbs on queue[%d]\n", i, j); - fp->eth_q_stats.rx_skb_alloc_failed++; - break; - } - ring_prod = NEXT_RX_IDX(ring_prod); - cqe_ring_prod = NEXT_RCQ_IDX(cqe_ring_prod); - WARN_ON(ring_prod <= i); - } - - fp->rx_bd_prod = ring_prod; - /* must not have more available CQEs than BDs */ - fp->rx_comp_prod = min_t(u16, NUM_RCQ_RINGS*RCQ_DESC_CNT, - cqe_ring_prod); - fp->rx_pkt = fp->rx_calls = 0; - - /* Warning! - * this will generate an interrupt (to the TSTORM) - * must only be done after chip is initialized - */ - bnx2x_update_rx_prod(bp, fp, ring_prod, fp->rx_comp_prod, - fp->rx_sge_prod); - if (j != 0) - continue; - - REG_WR(bp, BAR_USTRORM_INTMEM + - USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func), - U64_LO(fp->rx_comp_mapping)); - REG_WR(bp, BAR_USTRORM_INTMEM + - USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4, - U64_HI(fp->rx_comp_mapping)); - } -} - -static void bnx2x_init_tx_ring(struct bnx2x *bp) -{ - int i, j; - - for_each_queue(bp, j) { - struct bnx2x_fastpath *fp = &bp->fp[j]; - - for (i = 1; i <= NUM_TX_RINGS; i++) { - struct eth_tx_next_bd *tx_next_bd = - &fp->tx_desc_ring[TX_DESC_CNT * i - 1].next_bd; - - tx_next_bd->addr_hi = - cpu_to_le32(U64_HI(fp->tx_desc_mapping + - BCM_PAGE_SIZE*(i % NUM_TX_RINGS))); - tx_next_bd->addr_lo = - cpu_to_le32(U64_LO(fp->tx_desc_mapping + - BCM_PAGE_SIZE*(i % NUM_TX_RINGS))); - } - - fp->tx_db.data.header.header = DOORBELL_HDR_DB_TYPE; - fp->tx_db.data.zero_fill1 = 0; - fp->tx_db.data.prod = 0; - - fp->tx_pkt_prod = 0; - fp->tx_pkt_cons = 0; - fp->tx_bd_prod = 0; - fp->tx_bd_cons = 0; - fp->tx_cons_sb = BNX2X_TX_SB_INDEX; - fp->tx_pkt = 0; - } -} - static void bnx2x_init_sp_ring(struct bnx2x *bp) { int func = BP_FUNC(bp); @@ -5638,7 +4431,7 @@ static void bnx2x_init_ind_table(struct bnx2x *bp) bp->fp->cl_id + (i % bp->num_queues)); } -static void bnx2x_set_client_config(struct bnx2x *bp) +void bnx2x_set_client_config(struct bnx2x *bp) { struct tstorm_eth_client_config tstorm_client = {0}; int port = BP_PORT(bp); @@ -5671,7 +4464,7 @@ static void bnx2x_set_client_config(struct bnx2x *bp) ((u32 *)&tstorm_client)[0], ((u32 *)&tstorm_client)[1]); } -static void bnx2x_set_storm_rx_mode(struct bnx2x *bp) +void bnx2x_set_storm_rx_mode(struct bnx2x *bp) { struct tstorm_eth_mac_filter_config tstorm_mac_filter = {0}; int mode = bp->rx_mode; @@ -5991,7 +4784,7 @@ static void bnx2x_init_internal(struct bnx2x *bp, u32 load_code) } } -static void bnx2x_nic_init(struct bnx2x *bp, u32 load_code) +void bnx2x_nic_init(struct bnx2x *bp, u32 load_code) { int i; @@ -7072,7 +5865,7 @@ static int bnx2x_init_func(struct bnx2x *bp) return 0; } -static int bnx2x_init_hw(struct bnx2x *bp, u32 load_code) +int bnx2x_init_hw(struct bnx2x *bp, u32 load_code) { int i, rc = 0; @@ -7134,7 +5927,7 @@ init_hw_err: return rc; } -static void bnx2x_free_mem(struct bnx2x *bp) +void bnx2x_free_mem(struct bnx2x *bp) { #define BNX2X_PCI_FREE(x, y, size) \ @@ -7216,7 +6009,7 @@ static void bnx2x_free_mem(struct bnx2x *bp) #undef BNX2X_KFREE } -static int bnx2x_alloc_mem(struct bnx2x *bp) +int bnx2x_alloc_mem(struct bnx2x *bp) { #define BNX2X_PCI_ALLOC(x, y, size) \ @@ -7322,264 +6115,6 @@ alloc_mem_err: #undef BNX2X_ALLOC } -static void bnx2x_free_tx_skbs(struct bnx2x *bp) -{ - int i; - - for_each_queue(bp, i) { - struct bnx2x_fastpath *fp = &bp->fp[i]; - - u16 bd_cons = fp->tx_bd_cons; - u16 sw_prod = fp->tx_pkt_prod; - u16 sw_cons = fp->tx_pkt_cons; - - while (sw_cons != sw_prod) { - bd_cons = bnx2x_free_tx_pkt(bp, fp, TX_BD(sw_cons)); - sw_cons++; - } - } -} - -static void bnx2x_free_rx_skbs(struct bnx2x *bp) -{ - int i, j; - - for_each_queue(bp, j) { - struct bnx2x_fastpath *fp = &bp->fp[j]; - - for (i = 0; i < NUM_RX_BD; i++) { - struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i]; - struct sk_buff *skb = rx_buf->skb; - - if (skb == NULL) - continue; - - dma_unmap_single(&bp->pdev->dev, - dma_unmap_addr(rx_buf, mapping), - bp->rx_buf_size, DMA_FROM_DEVICE); - - rx_buf->skb = NULL; - dev_kfree_skb(skb); - } - if (!fp->disable_tpa) - bnx2x_free_tpa_pool(bp, fp, CHIP_IS_E1(bp) ? - ETH_MAX_AGGREGATION_QUEUES_E1 : - ETH_MAX_AGGREGATION_QUEUES_E1H); - } -} - -static void bnx2x_free_skbs(struct bnx2x *bp) -{ - bnx2x_free_tx_skbs(bp); - bnx2x_free_rx_skbs(bp); -} - -static void bnx2x_free_msix_irqs(struct bnx2x *bp) -{ - int i, offset = 1; - - free_irq(bp->msix_table[0].vector, bp->dev); - DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n", - bp->msix_table[0].vector); - -#ifdef BCM_CNIC - offset++; -#endif - for_each_queue(bp, i) { - DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d irq " - "state %x\n", i, bp->msix_table[i + offset].vector, - bnx2x_fp(bp, i, state)); - - free_irq(bp->msix_table[i + offset].vector, &bp->fp[i]); - } -} - -static void bnx2x_free_irq(struct bnx2x *bp, bool disable_only) -{ - if (bp->flags & USING_MSIX_FLAG) { - if (!disable_only) - bnx2x_free_msix_irqs(bp); - pci_disable_msix(bp->pdev); - bp->flags &= ~USING_MSIX_FLAG; - - } else if (bp->flags & USING_MSI_FLAG) { - if (!disable_only) - free_irq(bp->pdev->irq, bp->dev); - pci_disable_msi(bp->pdev); - bp->flags &= ~USING_MSI_FLAG; - - } else if (!disable_only) - free_irq(bp->pdev->irq, bp->dev); -} - -static int bnx2x_enable_msix(struct bnx2x *bp) -{ - int i, rc, offset = 1; - int igu_vec = 0; - - bp->msix_table[0].entry = igu_vec; - DP(NETIF_MSG_IFUP, "msix_table[0].entry = %d (slowpath)\n", igu_vec); - -#ifdef BCM_CNIC - igu_vec = BP_L_ID(bp) + offset; - bp->msix_table[1].entry = igu_vec; - DP(NETIF_MSG_IFUP, "msix_table[1].entry = %d (CNIC)\n", igu_vec); - offset++; -#endif - for_each_queue(bp, i) { - igu_vec = BP_L_ID(bp) + offset + i; - bp->msix_table[i + offset].entry = igu_vec; - DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d " - "(fastpath #%u)\n", i + offset, igu_vec, i); - } - - rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], - BNX2X_NUM_QUEUES(bp) + offset); - - /* - * reconfigure number of tx/rx queues according to available - * MSI-X vectors - */ - if (rc >= BNX2X_MIN_MSIX_VEC_CNT) { - /* vectors available for FP */ - int fp_vec = rc - BNX2X_MSIX_VEC_FP_START; - - DP(NETIF_MSG_IFUP, - "Trying to use less MSI-X vectors: %d\n", rc); - - rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], rc); - - if (rc) { - DP(NETIF_MSG_IFUP, - "MSI-X is not attainable rc %d\n", rc); - return rc; - } - - bp->num_queues = min(bp->num_queues, fp_vec); - - DP(NETIF_MSG_IFUP, "New queue configuration set: %d\n", - bp->num_queues); - } else if (rc) { - DP(NETIF_MSG_IFUP, "MSI-X is not attainable rc %d\n", rc); - return rc; - } - - bp->flags |= USING_MSIX_FLAG; - - return 0; -} - -static int bnx2x_req_msix_irqs(struct bnx2x *bp) -{ - int i, rc, offset = 1; - - rc = request_irq(bp->msix_table[0].vector, bnx2x_msix_sp_int, 0, - bp->dev->name, bp->dev); - if (rc) { - BNX2X_ERR("request sp irq failed\n"); - return -EBUSY; - } - -#ifdef BCM_CNIC - offset++; -#endif - for_each_queue(bp, i) { - struct bnx2x_fastpath *fp = &bp->fp[i]; - snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", - bp->dev->name, i); - - rc = request_irq(bp->msix_table[i + offset].vector, - bnx2x_msix_fp_int, 0, fp->name, fp); - if (rc) { - BNX2X_ERR("request fp #%d irq failed rc %d\n", i, rc); - bnx2x_free_msix_irqs(bp); - return -EBUSY; - } - - fp->state = BNX2X_FP_STATE_IRQ; - } - - i = BNX2X_NUM_QUEUES(bp); - netdev_info(bp->dev, "using MSI-X IRQs: sp %d fp[%d] %d" - " ... fp[%d] %d\n", - bp->msix_table[0].vector, - 0, bp->msix_table[offset].vector, - i - 1, bp->msix_table[offset + i - 1].vector); - - return 0; -} - -static int bnx2x_enable_msi(struct bnx2x *bp) -{ - int rc; - - rc = pci_enable_msi(bp->pdev); - if (rc) { - DP(NETIF_MSG_IFUP, "MSI is not attainable\n"); - return -1; - } - bp->flags |= USING_MSI_FLAG; - - return 0; -} - -static int bnx2x_req_irq(struct bnx2x *bp) -{ - unsigned long flags; - int rc; - - if (bp->flags & USING_MSI_FLAG) - flags = 0; - else - flags = IRQF_SHARED; - - rc = request_irq(bp->pdev->irq, bnx2x_interrupt, flags, - bp->dev->name, bp->dev); - if (!rc) - bnx2x_fp(bp, 0, state) = BNX2X_FP_STATE_IRQ; - - return rc; -} - -static void bnx2x_napi_enable(struct bnx2x *bp) -{ - int i; - - for_each_queue(bp, i) - napi_enable(&bnx2x_fp(bp, i, napi)); -} - -static void bnx2x_napi_disable(struct bnx2x *bp) -{ - int i; - - for_each_queue(bp, i) - napi_disable(&bnx2x_fp(bp, i, napi)); -} - -static void bnx2x_netif_start(struct bnx2x *bp) -{ - int intr_sem; - - intr_sem = atomic_dec_and_test(&bp->intr_sem); - smp_wmb(); /* Ensure that bp->intr_sem update is SMP-safe */ - - if (intr_sem) { - if (netif_running(bp->dev)) { - bnx2x_napi_enable(bp); - bnx2x_int_enable(bp); - if (bp->state == BNX2X_STATE_OPEN) - netif_tx_wake_all_queues(bp->dev); - } - } -} - -static void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw) -{ - bnx2x_int_disable_sync(bp, disable_hw); - bnx2x_napi_disable(bp); - netif_tx_disable(bp->dev); -} /* * Init service functions @@ -7750,7 +6285,7 @@ static int bnx2x_wait_ramrod(struct bnx2x *bp, int state, int idx, return -EBUSY; } -static void bnx2x_set_eth_mac_addr_e1h(struct bnx2x *bp, int set) +void bnx2x_set_eth_mac_addr_e1h(struct bnx2x *bp, int set) { bp->set_mac_pending++; smp_wmb(); @@ -7762,7 +6297,7 @@ static void bnx2x_set_eth_mac_addr_e1h(struct bnx2x *bp, int set) bnx2x_wait_ramrod(bp, 0, 0, &bp->set_mac_pending, set ? 0 : 1); } -static void bnx2x_set_eth_mac_addr_e1(struct bnx2x *bp, int set) +void bnx2x_set_eth_mac_addr_e1(struct bnx2x *bp, int set) { bp->set_mac_pending++; smp_wmb(); @@ -7786,7 +6321,7 @@ static void bnx2x_set_eth_mac_addr_e1(struct bnx2x *bp, int set) * * @return 0 if cussess, -ENODEV if ramrod doesn't return. */ -static int bnx2x_set_iscsi_eth_mac_addr(struct bnx2x *bp, int set) +int bnx2x_set_iscsi_eth_mac_addr(struct bnx2x *bp, int set) { u32 cl_bit_vec = (1 << BCM_ISCSI_ETH_CL_ID); @@ -7813,7 +6348,7 @@ static int bnx2x_set_iscsi_eth_mac_addr(struct bnx2x *bp, int set) } #endif -static int bnx2x_setup_leading(struct bnx2x *bp) +int bnx2x_setup_leading(struct bnx2x *bp) { int rc; @@ -7829,7 +6364,7 @@ static int bnx2x_setup_leading(struct bnx2x *bp) return rc; } -static int bnx2x_setup_multi(struct bnx2x *bp, int index) +int bnx2x_setup_multi(struct bnx2x *bp, int index) { struct bnx2x_fastpath *fp = &bp->fp[index]; @@ -7846,9 +6381,8 @@ static int bnx2x_setup_multi(struct bnx2x *bp, int index) &(fp->state), 0); } -static int bnx2x_poll(struct napi_struct *napi, int budget); -static void bnx2x_set_num_queues_msix(struct bnx2x *bp) +void bnx2x_set_num_queues_msix(struct bnx2x *bp) { switch (bp->multi_mode) { @@ -7872,292 +6406,7 @@ static void bnx2x_set_num_queues_msix(struct bnx2x *bp) } } -static int bnx2x_set_num_queues(struct bnx2x *bp) -{ - int rc = 0; - - switch (bp->int_mode) { - case INT_MODE_INTx: - case INT_MODE_MSI: - bp->num_queues = 1; - DP(NETIF_MSG_IFUP, "set number of queues to 1\n"); - break; - default: - /* Set number of queues according to bp->multi_mode value */ - bnx2x_set_num_queues_msix(bp); - - DP(NETIF_MSG_IFUP, "set number of queues to %d\n", - bp->num_queues); - - /* if we can't use MSI-X we only need one fp, - * so try to enable MSI-X with the requested number of fp's - * and fallback to MSI or legacy INTx with one fp - */ - rc = bnx2x_enable_msix(bp); - if (rc) - /* failed to enable MSI-X */ - bp->num_queues = 1; - break; - } - bp->dev->real_num_tx_queues = bp->num_queues; - return rc; -} - -#ifdef BCM_CNIC -static int bnx2x_cnic_notify(struct bnx2x *bp, int cmd); -static void bnx2x_setup_cnic_irq_info(struct bnx2x *bp); -#endif - -/* must be called with rtnl_lock */ -static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) -{ - u32 load_code; - int i, rc; - -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) - return -EPERM; -#endif - - bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD; - - rc = bnx2x_set_num_queues(bp); - - if (bnx2x_alloc_mem(bp)) { - bnx2x_free_irq(bp, true); - return -ENOMEM; - } - - for_each_queue(bp, i) - bnx2x_fp(bp, i, disable_tpa) = - ((bp->flags & TPA_ENABLE_FLAG) == 0); - - for_each_queue(bp, i) - netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi), - bnx2x_poll, 128); - - bnx2x_napi_enable(bp); - - if (bp->flags & USING_MSIX_FLAG) { - rc = bnx2x_req_msix_irqs(bp); - if (rc) { - bnx2x_free_irq(bp, true); - goto load_error1; - } - } else { - /* Fall to INTx if failed to enable MSI-X due to lack of - memory (in bnx2x_set_num_queues()) */ - if ((rc != -ENOMEM) && (int_mode != INT_MODE_INTx)) - bnx2x_enable_msi(bp); - bnx2x_ack_int(bp); - rc = bnx2x_req_irq(bp); - if (rc) { - BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc); - bnx2x_free_irq(bp, true); - goto load_error1; - } - if (bp->flags & USING_MSI_FLAG) { - bp->dev->irq = bp->pdev->irq; - netdev_info(bp->dev, "using MSI IRQ %d\n", - bp->pdev->irq); - } - } - - /* Send LOAD_REQUEST command to MCP - Returns the type of LOAD command: - if it is the first port to be initialized - common blocks should be initialized, otherwise - not - */ - if (!BP_NOMCP(bp)) { - load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ); - if (!load_code) { - BNX2X_ERR("MCP response failure, aborting\n"); - rc = -EBUSY; - goto load_error2; - } - if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) { - rc = -EBUSY; /* other port in diagnostic mode */ - goto load_error2; - } - - } else { - int port = BP_PORT(bp); - - DP(NETIF_MSG_IFUP, "NO MCP - load counts %d, %d, %d\n", - load_count[0], load_count[1], load_count[2]); - load_count[0]++; - load_count[1 + port]++; - DP(NETIF_MSG_IFUP, "NO MCP - new load counts %d, %d, %d\n", - load_count[0], load_count[1], load_count[2]); - if (load_count[0] == 1) - load_code = FW_MSG_CODE_DRV_LOAD_COMMON; - else if (load_count[1 + port] == 1) - load_code = FW_MSG_CODE_DRV_LOAD_PORT; - else - load_code = FW_MSG_CODE_DRV_LOAD_FUNCTION; - } - - if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) || - (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) - bp->port.pmf = 1; - else - bp->port.pmf = 0; - DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf); - - /* Initialize HW */ - rc = bnx2x_init_hw(bp, load_code); - if (rc) { - BNX2X_ERR("HW init failed, aborting\n"); - bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE); - bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP); - bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE); - goto load_error2; - } - - /* Setup NIC internals and enable interrupts */ - bnx2x_nic_init(bp, load_code); - - if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) && - (bp->common.shmem2_base)) - SHMEM2_WR(bp, dcc_support, - (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV | - SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV)); - /* Send LOAD_DONE command to MCP */ - if (!BP_NOMCP(bp)) { - load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE); - if (!load_code) { - BNX2X_ERR("MCP response failure, aborting\n"); - rc = -EBUSY; - goto load_error3; - } - } - - bp->state = BNX2X_STATE_OPENING_WAIT4_PORT; - - rc = bnx2x_setup_leading(bp); - if (rc) { - BNX2X_ERR("Setup leading failed!\n"); -#ifndef BNX2X_STOP_ON_ERROR - goto load_error3; -#else - bp->panic = 1; - return -EBUSY; -#endif - } - - if (CHIP_IS_E1H(bp)) - if (bp->mf_config & FUNC_MF_CFG_FUNC_DISABLED) { - DP(NETIF_MSG_IFUP, "mf_cfg function disabled\n"); - bp->flags |= MF_FUNC_DIS; - } - - if (bp->state == BNX2X_STATE_OPEN) { -#ifdef BCM_CNIC - /* Enable Timer scan */ - REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + BP_PORT(bp)*4, 1); -#endif - for_each_nondefault_queue(bp, i) { - rc = bnx2x_setup_multi(bp, i); - if (rc) -#ifdef BCM_CNIC - goto load_error4; -#else - goto load_error3; -#endif - } - - if (CHIP_IS_E1(bp)) - bnx2x_set_eth_mac_addr_e1(bp, 1); - else - bnx2x_set_eth_mac_addr_e1h(bp, 1); -#ifdef BCM_CNIC - /* Set iSCSI L2 MAC */ - mutex_lock(&bp->cnic_mutex); - if (bp->cnic_eth_dev.drv_state & CNIC_DRV_STATE_REGD) { - bnx2x_set_iscsi_eth_mac_addr(bp, 1); - bp->cnic_flags |= BNX2X_CNIC_FLAG_MAC_SET; - bnx2x_init_sb(bp, bp->cnic_sb, bp->cnic_sb_mapping, - CNIC_SB_ID(bp)); - } - mutex_unlock(&bp->cnic_mutex); -#endif - } - - if (bp->port.pmf) - bnx2x_initial_phy_init(bp, load_mode); - - /* Start fast path */ - switch (load_mode) { - case LOAD_NORMAL: - if (bp->state == BNX2X_STATE_OPEN) { - /* Tx queue should be only reenabled */ - netif_tx_wake_all_queues(bp->dev); - } - /* Initialize the receive filter. */ - bnx2x_set_rx_mode(bp->dev); - break; - - case LOAD_OPEN: - netif_tx_start_all_queues(bp->dev); - if (bp->state != BNX2X_STATE_OPEN) - netif_tx_disable(bp->dev); - /* Initialize the receive filter. */ - bnx2x_set_rx_mode(bp->dev); - break; - - case LOAD_DIAG: - /* Initialize the receive filter. */ - bnx2x_set_rx_mode(bp->dev); - bp->state = BNX2X_STATE_DIAG; - break; - - default: - break; - } - - if (!bp->port.pmf) - bnx2x__link_status_update(bp); - - /* start the timer */ - mod_timer(&bp->timer, jiffies + bp->current_interval); - -#ifdef BCM_CNIC - bnx2x_setup_cnic_irq_info(bp); - if (bp->state == BNX2X_STATE_OPEN) - bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD); -#endif - bnx2x_inc_load_cnt(bp); - - return 0; - -#ifdef BCM_CNIC -load_error4: - /* Disable Timer scan */ - REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + BP_PORT(bp)*4, 0); -#endif -load_error3: - bnx2x_int_disable_sync(bp, 1); - if (!BP_NOMCP(bp)) { - bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP); - bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE); - } - bp->port.pmf = 0; - /* Free SKBs, SGEs, TPA pool and driver internals */ - bnx2x_free_skbs(bp); - for_each_queue(bp, i) - bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); -load_error2: - /* Release IRQs */ - bnx2x_free_irq(bp, false); -load_error1: - bnx2x_napi_disable(bp); - for_each_queue(bp, i) - netif_napi_del(&bnx2x_fp(bp, i, napi)); - bnx2x_free_mem(bp); - - return rc; -} static int bnx2x_stop_multi(struct bnx2x *bp, int index) { @@ -8315,7 +6564,7 @@ static void bnx2x_reset_chip(struct bnx2x *bp, u32 reset_code) } } -static void bnx2x_chip_cleanup(struct bnx2x *bp, int unload_mode) +void bnx2x_chip_cleanup(struct bnx2x *bp, int unload_mode) { int port = BP_PORT(bp); u32 reset_code = 0; @@ -8463,7 +6712,7 @@ unload_error: } -static inline void bnx2x_disable_close_the_gate(struct bnx2x *bp) +void bnx2x_disable_close_the_gate(struct bnx2x *bp) { u32 val; @@ -8485,71 +6734,6 @@ static inline void bnx2x_disable_close_the_gate(struct bnx2x *bp) } } -/* must be called with rtnl_lock */ -static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode) -{ - int i; - - if (bp->state == BNX2X_STATE_CLOSED) { - /* Interface has been removed - nothing to recover */ - bp->recovery_state = BNX2X_RECOVERY_DONE; - bp->is_leader = 0; - bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_RESERVED_08); - smp_wmb(); - - return -EINVAL; - } - -#ifdef BCM_CNIC - bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD); -#endif - bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT; - - /* Set "drop all" */ - bp->rx_mode = BNX2X_RX_MODE_NONE; - bnx2x_set_storm_rx_mode(bp); - - /* Disable HW interrupts, NAPI and Tx */ - bnx2x_netif_stop(bp, 1); - netif_carrier_off(bp->dev); - - del_timer_sync(&bp->timer); - SHMEM_WR(bp, func_mb[BP_FUNC(bp)].drv_pulse_mb, - (DRV_PULSE_ALWAYS_ALIVE | bp->fw_drv_pulse_wr_seq)); - bnx2x_stats_handle(bp, STATS_EVENT_STOP); - - /* Release IRQs */ - bnx2x_free_irq(bp, false); - - /* Cleanup the chip if needed */ - if (unload_mode != UNLOAD_RECOVERY) - bnx2x_chip_cleanup(bp, unload_mode); - - bp->port.pmf = 0; - - /* Free SKBs, SGEs, TPA pool and driver internals */ - bnx2x_free_skbs(bp); - for_each_queue(bp, i) - bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); - for_each_queue(bp, i) - netif_napi_del(&bnx2x_fp(bp, i, napi)); - bnx2x_free_mem(bp); - - bp->state = BNX2X_STATE_CLOSED; - - /* The last driver must disable a "close the gate" if there is no - * parity attention or "process kill" pending. - */ - if ((!bnx2x_dec_load_cnt(bp)) && (!bnx2x_chk_parity_attn(bp)) && - bnx2x_reset_is_done(bp)) - bnx2x_disable_close_the_gate(bp); - - /* Reset MCP mail box sequence if there is on going recovery */ - if (unload_mode == UNLOAD_RECOVERY) - bp->fw_seq = 0; - - return 0; -} /* Close gates #2, #3 and #4: */ static void bnx2x_set_234_gates(struct bnx2x *bp, bool close) @@ -8862,8 +7046,6 @@ exit_leader_reset: return rc; } -static int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state); - /* Assumption: runs under rtnl lock. This together with the fact * that it's called only from bnx2x_reset_task() ensure that it * will never be called when netif_running(bp->dev) is false. @@ -11938,598 +10120,6 @@ static const struct ethtool_ops bnx2x_ethtool_ops = { /* end of ethtool_ops */ -/**************************************************************************** -* General service functions -****************************************************************************/ - -static int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state) -{ - u16 pmcsr; - - pci_read_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, &pmcsr); - - switch (state) { - case PCI_D0: - pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, - ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) | - PCI_PM_CTRL_PME_STATUS)); - - if (pmcsr & PCI_PM_CTRL_STATE_MASK) - /* delay required during transition out of D3hot */ - msleep(20); - break; - - case PCI_D3hot: - /* If there are other clients above don't - shut down the power */ - if (atomic_read(&bp->pdev->enable_cnt) != 1) - return 0; - /* Don't shut down the power for emulation and FPGA */ - if (CHIP_REV_IS_SLOW(bp)) - return 0; - - pmcsr &= ~PCI_PM_CTRL_STATE_MASK; - pmcsr |= 3; - - if (bp->wol) - pmcsr |= PCI_PM_CTRL_PME_ENABLE; - - pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, - pmcsr); - - /* No more memory access after this point until - * device is brought back to D0. - */ - break; - - default: - return -EINVAL; - } - return 0; -} - -static inline int bnx2x_has_rx_work(struct bnx2x_fastpath *fp) -{ - u16 rx_cons_sb; - - /* Tell compiler that status block fields can change */ - barrier(); - rx_cons_sb = le16_to_cpu(*fp->rx_cons_sb); - if ((rx_cons_sb & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT) - rx_cons_sb++; - return (fp->rx_comp_cons != rx_cons_sb); -} - -/* - * net_device service functions - */ - -static int bnx2x_poll(struct napi_struct *napi, int budget) -{ - int work_done = 0; - struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath, - napi); - struct bnx2x *bp = fp->bp; - - while (1) { -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) { - napi_complete(napi); - return 0; - } -#endif - - if (bnx2x_has_tx_work(fp)) - bnx2x_tx_int(fp); - - if (bnx2x_has_rx_work(fp)) { - work_done += bnx2x_rx_int(fp, budget - work_done); - - /* must not complete if we consumed full budget */ - if (work_done >= budget) - break; - } - - /* Fall out from the NAPI loop if needed */ - if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) { - bnx2x_update_fpsb_idx(fp); - /* bnx2x_has_rx_work() reads the status block, thus we need - * to ensure that status block indices have been actually read - * (bnx2x_update_fpsb_idx) prior to this check - * (bnx2x_has_rx_work) so that we won't write the "newer" - * value of the status block to IGU (if there was a DMA right - * after bnx2x_has_rx_work and if there is no rmb, the memory - * reading (bnx2x_update_fpsb_idx) may be postponed to right - * before bnx2x_ack_sb). In this case there will never be - * another interrupt until there is another update of the - * status block, while there is still unhandled work. - */ - rmb(); - - if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) { - napi_complete(napi); - /* Re-enable interrupts */ - bnx2x_ack_sb(bp, fp->sb_id, CSTORM_ID, - le16_to_cpu(fp->fp_c_idx), - IGU_INT_NOP, 1); - bnx2x_ack_sb(bp, fp->sb_id, USTORM_ID, - le16_to_cpu(fp->fp_u_idx), - IGU_INT_ENABLE, 1); - break; - } - } - } - - return work_done; -} - - -/* we split the first BD into headers and data BDs - * to ease the pain of our fellow microcode engineers - * we use one mapping for both BDs - * So far this has only been observed to happen - * in Other Operating Systems(TM) - */ -static noinline u16 bnx2x_tx_split(struct bnx2x *bp, - struct bnx2x_fastpath *fp, - struct sw_tx_bd *tx_buf, - struct eth_tx_start_bd **tx_bd, u16 hlen, - u16 bd_prod, int nbd) -{ - struct eth_tx_start_bd *h_tx_bd = *tx_bd; - struct eth_tx_bd *d_tx_bd; - dma_addr_t mapping; - int old_len = le16_to_cpu(h_tx_bd->nbytes); - - /* first fix first BD */ - h_tx_bd->nbd = cpu_to_le16(nbd); - h_tx_bd->nbytes = cpu_to_le16(hlen); - - DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d " - "(%x:%x) nbd %d\n", h_tx_bd->nbytes, h_tx_bd->addr_hi, - h_tx_bd->addr_lo, h_tx_bd->nbd); - - /* now get a new data BD - * (after the pbd) and fill it */ - bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); - d_tx_bd = &fp->tx_desc_ring[bd_prod].reg_bd; - - mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi), - le32_to_cpu(h_tx_bd->addr_lo)) + hlen; - - d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); - d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); - d_tx_bd->nbytes = cpu_to_le16(old_len - hlen); - - /* this marks the BD as one that has no individual mapping */ - tx_buf->flags |= BNX2X_TSO_SPLIT_BD; - - DP(NETIF_MSG_TX_QUEUED, - "TSO split data size is %d (%x:%x)\n", - d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo); - - /* update tx_bd */ - *tx_bd = (struct eth_tx_start_bd *)d_tx_bd; - - return bd_prod; -} - -static inline u16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix) -{ - if (fix > 0) - csum = (u16) ~csum_fold(csum_sub(csum, - csum_partial(t_header - fix, fix, 0))); - - else if (fix < 0) - csum = (u16) ~csum_fold(csum_add(csum, - csum_partial(t_header, -fix, 0))); - - return swab16(csum); -} - -static inline u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb) -{ - u32 rc; - - if (skb->ip_summed != CHECKSUM_PARTIAL) - rc = XMIT_PLAIN; - - else { - if (skb->protocol == htons(ETH_P_IPV6)) { - rc = XMIT_CSUM_V6; - if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) - rc |= XMIT_CSUM_TCP; - - } else { - rc = XMIT_CSUM_V4; - if (ip_hdr(skb)->protocol == IPPROTO_TCP) - rc |= XMIT_CSUM_TCP; - } - } - - if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4) - rc |= (XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP); - - else if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) - rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6); - - return rc; -} - -#if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3) -/* check if packet requires linearization (packet is too fragmented) - no need to check fragmentation if page size > 8K (there will be no - violation to FW restrictions) */ -static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb, - u32 xmit_type) -{ - int to_copy = 0; - int hlen = 0; - int first_bd_sz = 0; - - /* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */ - if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - 3)) { - - if (xmit_type & XMIT_GSO) { - unsigned short lso_mss = skb_shinfo(skb)->gso_size; - /* Check if LSO packet needs to be copied: - 3 = 1 (for headers BD) + 2 (for PBD and last BD) */ - int wnd_size = MAX_FETCH_BD - 3; - /* Number of windows to check */ - int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size; - int wnd_idx = 0; - int frag_idx = 0; - u32 wnd_sum = 0; - - /* Headers length */ - hlen = (int)(skb_transport_header(skb) - skb->data) + - tcp_hdrlen(skb); - - /* Amount of data (w/o headers) on linear part of SKB*/ - first_bd_sz = skb_headlen(skb) - hlen; - - wnd_sum = first_bd_sz; - - /* Calculate the first sum - it's special */ - for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++) - wnd_sum += - skb_shinfo(skb)->frags[frag_idx].size; - - /* If there was data on linear skb data - check it */ - if (first_bd_sz > 0) { - if (unlikely(wnd_sum < lso_mss)) { - to_copy = 1; - goto exit_lbl; - } - - wnd_sum -= first_bd_sz; - } - - /* Others are easier: run through the frag list and - check all windows */ - for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) { - wnd_sum += - skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1].size; - - if (unlikely(wnd_sum < lso_mss)) { - to_copy = 1; - break; - } - wnd_sum -= - skb_shinfo(skb)->frags[wnd_idx].size; - } - } else { - /* in non-LSO too fragmented packet should always - be linearized */ - to_copy = 1; - } - } - -exit_lbl: - if (unlikely(to_copy)) - DP(NETIF_MSG_TX_QUEUED, - "Linearization IS REQUIRED for %s packet. " - "num_frags %d hlen %d first_bd_sz %d\n", - (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO", - skb_shinfo(skb)->nr_frags, hlen, first_bd_sz); - - return to_copy; -} -#endif - -/* called with netif_tx_lock - * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call - * netif_wake_queue() - */ -static netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct bnx2x *bp = netdev_priv(dev); - struct bnx2x_fastpath *fp; - struct netdev_queue *txq; - struct sw_tx_bd *tx_buf; - struct eth_tx_start_bd *tx_start_bd; - struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL; - struct eth_tx_parse_bd *pbd = NULL; - u16 pkt_prod, bd_prod; - int nbd, fp_index; - dma_addr_t mapping; - u32 xmit_type = bnx2x_xmit_type(bp, skb); - int i; - u8 hlen = 0; - __le16 pkt_size = 0; - struct ethhdr *eth; - u8 mac_type = UNICAST_ADDRESS; - -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) - return NETDEV_TX_BUSY; -#endif - - fp_index = skb_get_queue_mapping(skb); - txq = netdev_get_tx_queue(dev, fp_index); - - fp = &bp->fp[fp_index]; - - if (unlikely(bnx2x_tx_avail(fp) < (skb_shinfo(skb)->nr_frags + 3))) { - fp->eth_q_stats.driver_xoff++; - netif_tx_stop_queue(txq); - BNX2X_ERR("BUG! Tx ring full when queue awake!\n"); - return NETDEV_TX_BUSY; - } - - DP(NETIF_MSG_TX_QUEUED, "SKB: summed %x protocol %x protocol(%x,%x)" - " gso type %x xmit_type %x\n", - skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr, - ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type); - - eth = (struct ethhdr *)skb->data; - - /* set flag according to packet type (UNICAST_ADDRESS is default)*/ - if (unlikely(is_multicast_ether_addr(eth->h_dest))) { - if (is_broadcast_ether_addr(eth->h_dest)) - mac_type = BROADCAST_ADDRESS; - else - mac_type = MULTICAST_ADDRESS; - } - -#if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3) - /* First, check if we need to linearize the skb (due to FW - restrictions). No need to check fragmentation if page size > 8K - (there will be no violation to FW restrictions) */ - if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) { - /* Statistics of linearization */ - bp->lin_cnt++; - if (skb_linearize(skb) != 0) { - DP(NETIF_MSG_TX_QUEUED, "SKB linearization failed - " - "silently dropping this SKB\n"); - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - } -#endif - - /* - Please read carefully. First we use one BD which we mark as start, - then we have a parsing info BD (used for TSO or xsum), - and only then we have the rest of the TSO BDs. - (don't forget to mark the last one as last, - and to unmap only AFTER you write to the BD ...) - And above all, all pdb sizes are in words - NOT DWORDS! - */ - - pkt_prod = fp->tx_pkt_prod++; - bd_prod = TX_BD(fp->tx_bd_prod); - - /* get a tx_buf and first BD */ - tx_buf = &fp->tx_buf_ring[TX_BD(pkt_prod)]; - tx_start_bd = &fp->tx_desc_ring[bd_prod].start_bd; - - tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD; - tx_start_bd->general_data = (mac_type << - ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT); - /* header nbd */ - tx_start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT); - - /* remember the first BD of the packet */ - tx_buf->first_bd = fp->tx_bd_prod; - tx_buf->skb = skb; - tx_buf->flags = 0; - - DP(NETIF_MSG_TX_QUEUED, - "sending pkt %u @%p next_idx %u bd %u @%p\n", - pkt_prod, tx_buf, fp->tx_pkt_prod, bd_prod, tx_start_bd); - -#ifdef BCM_VLAN - if ((bp->vlgrp != NULL) && vlan_tx_tag_present(skb) && - (bp->flags & HW_VLAN_TX_FLAG)) { - tx_start_bd->vlan = cpu_to_le16(vlan_tx_tag_get(skb)); - tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_VLAN_TAG; - } else -#endif - tx_start_bd->vlan = cpu_to_le16(pkt_prod); - - /* turn on parsing and get a BD */ - bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); - pbd = &fp->tx_desc_ring[bd_prod].parse_bd; - - memset(pbd, 0, sizeof(struct eth_tx_parse_bd)); - - if (xmit_type & XMIT_CSUM) { - hlen = (skb_network_header(skb) - skb->data) / 2; - - /* for now NS flag is not used in Linux */ - pbd->global_data = - (hlen | ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) << - ETH_TX_PARSE_BD_LLC_SNAP_EN_SHIFT)); - - pbd->ip_hlen = (skb_transport_header(skb) - - skb_network_header(skb)) / 2; - - hlen += pbd->ip_hlen + tcp_hdrlen(skb) / 2; - - pbd->total_hlen = cpu_to_le16(hlen); - hlen = hlen*2; - - tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM; - - if (xmit_type & XMIT_CSUM_V4) - tx_start_bd->bd_flags.as_bitfield |= - ETH_TX_BD_FLAGS_IP_CSUM; - else - tx_start_bd->bd_flags.as_bitfield |= - ETH_TX_BD_FLAGS_IPV6; - - if (xmit_type & XMIT_CSUM_TCP) { - pbd->tcp_pseudo_csum = swab16(tcp_hdr(skb)->check); - - } else { - s8 fix = SKB_CS_OFF(skb); /* signed! */ - - pbd->global_data |= ETH_TX_PARSE_BD_UDP_CS_FLG; - - DP(NETIF_MSG_TX_QUEUED, - "hlen %d fix %d csum before fix %x\n", - le16_to_cpu(pbd->total_hlen), fix, SKB_CS(skb)); - - /* HW bug: fixup the CSUM */ - pbd->tcp_pseudo_csum = - bnx2x_csum_fix(skb_transport_header(skb), - SKB_CS(skb), fix); - - DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n", - pbd->tcp_pseudo_csum); - } - } - - mapping = dma_map_single(&bp->pdev->dev, skb->data, - skb_headlen(skb), DMA_TO_DEVICE); - - tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); - tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); - nbd = skb_shinfo(skb)->nr_frags + 2; /* start_bd + pbd + frags */ - tx_start_bd->nbd = cpu_to_le16(nbd); - tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb)); - pkt_size = tx_start_bd->nbytes; - - DP(NETIF_MSG_TX_QUEUED, "first bd @%p addr (%x:%x) nbd %d" - " nbytes %d flags %x vlan %x\n", - tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo, - le16_to_cpu(tx_start_bd->nbd), le16_to_cpu(tx_start_bd->nbytes), - tx_start_bd->bd_flags.as_bitfield, le16_to_cpu(tx_start_bd->vlan)); - - if (xmit_type & XMIT_GSO) { - - DP(NETIF_MSG_TX_QUEUED, - "TSO packet len %d hlen %d total len %d tso size %d\n", - skb->len, hlen, skb_headlen(skb), - skb_shinfo(skb)->gso_size); - - tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO; - - if (unlikely(skb_headlen(skb) > hlen)) - bd_prod = bnx2x_tx_split(bp, fp, tx_buf, &tx_start_bd, - hlen, bd_prod, ++nbd); - - pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size); - pbd->tcp_send_seq = swab32(tcp_hdr(skb)->seq); - pbd->tcp_flags = pbd_tcp_flags(skb); - - if (xmit_type & XMIT_GSO_V4) { - pbd->ip_id = swab16(ip_hdr(skb)->id); - pbd->tcp_pseudo_csum = - swab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr, - ip_hdr(skb)->daddr, - 0, IPPROTO_TCP, 0)); - - } else - pbd->tcp_pseudo_csum = - swab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, - &ipv6_hdr(skb)->daddr, - 0, IPPROTO_TCP, 0)); - - pbd->global_data |= ETH_TX_PARSE_BD_PSEUDO_CS_WITHOUT_LEN; - } - tx_data_bd = (struct eth_tx_bd *)tx_start_bd; - - for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { - skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; - - bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); - tx_data_bd = &fp->tx_desc_ring[bd_prod].reg_bd; - if (total_pkt_bd == NULL) - total_pkt_bd = &fp->tx_desc_ring[bd_prod].reg_bd; - - mapping = dma_map_page(&bp->pdev->dev, frag->page, - frag->page_offset, - frag->size, DMA_TO_DEVICE); - - tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); - tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); - tx_data_bd->nbytes = cpu_to_le16(frag->size); - le16_add_cpu(&pkt_size, frag->size); - - DP(NETIF_MSG_TX_QUEUED, - "frag %d bd @%p addr (%x:%x) nbytes %d\n", - i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo, - le16_to_cpu(tx_data_bd->nbytes)); - } - - DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd); - - bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); - - /* now send a tx doorbell, counting the next BD - * if the packet contains or ends with it - */ - if (TX_BD_POFF(bd_prod) < nbd) - nbd++; - - if (total_pkt_bd != NULL) - total_pkt_bd->total_pkt_bytes = pkt_size; - - if (pbd) - DP(NETIF_MSG_TX_QUEUED, - "PBD @%p ip_data %x ip_hlen %u ip_id %u lso_mss %u" - " tcp_flags %x xsum %x seq %u hlen %u\n", - pbd, pbd->global_data, pbd->ip_hlen, pbd->ip_id, - pbd->lso_mss, pbd->tcp_flags, pbd->tcp_pseudo_csum, - pbd->tcp_send_seq, le16_to_cpu(pbd->total_hlen)); - - DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod); - - /* - * Make sure that the BD data is updated before updating the producer - * since FW might read the BD right after the producer is updated. - * This is only applicable for weak-ordered memory model archs such - * as IA-64. The following barrier is also mandatory since FW will - * assumes packets must have BDs. - */ - wmb(); - - fp->tx_db.data.prod += nbd; - barrier(); - DOORBELL(bp, fp->index, fp->tx_db.raw); - - mmiowb(); - - fp->tx_bd_prod += nbd; - - if (unlikely(bnx2x_tx_avail(fp) < MAX_SKB_FRAGS + 3)) { - netif_tx_stop_queue(txq); - - /* paired memory barrier is in bnx2x_tx_int(), we have to keep - * ordering of set_bit() in netif_tx_stop_queue() and read of - * fp->bd_tx_cons */ - smp_mb(); - - fp->eth_q_stats.driver_xoff++; - if (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3) - netif_tx_wake_queue(txq); - } - fp->tx_pkt++; - - return NETDEV_TX_OK; -} /* called with rtnl_lock */ static int bnx2x_open(struct net_device *dev) @@ -12590,7 +10180,7 @@ static int bnx2x_close(struct net_device *dev) } /* called with netif_tx_lock from dev_mcast.c */ -static void bnx2x_set_rx_mode(struct net_device *dev) +void bnx2x_set_rx_mode(struct net_device *dev) { struct bnx2x *bp = netdev_priv(dev); u32 rx_mode = BNX2X_RX_MODE_NORMAL; @@ -12710,25 +10300,6 @@ static void bnx2x_set_rx_mode(struct net_device *dev) bnx2x_set_storm_rx_mode(bp); } -/* called with rtnl_lock */ -static int bnx2x_change_mac_addr(struct net_device *dev, void *p) -{ - struct sockaddr *addr = p; - struct bnx2x *bp = netdev_priv(dev); - - if (!is_valid_ether_addr((u8 *)(addr->sa_data))) - return -EINVAL; - - memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); - if (netif_running(dev)) { - if (CHIP_IS_E1(bp)) - bnx2x_set_eth_mac_addr_e1(bp, 1); - else - bnx2x_set_eth_mac_addr_e1h(bp, 1); - } - - return 0; -} /* called with rtnl_lock */ static int bnx2x_mdio_read(struct net_device *netdev, int prtad, @@ -12804,71 +10375,6 @@ static int bnx2x_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) return mdio_mii_ioctl(&bp->mdio, mdio, cmd); } -/* called with rtnl_lock */ -static int bnx2x_change_mtu(struct net_device *dev, int new_mtu) -{ - struct bnx2x *bp = netdev_priv(dev); - int rc = 0; - - if (bp->recovery_state != BNX2X_RECOVERY_DONE) { - printk(KERN_ERR "Handling parity error recovery. Try again later\n"); - return -EAGAIN; - } - - if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) || - ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE)) - return -EINVAL; - - /* This does not race with packet allocation - * because the actual alloc size is - * only updated as part of load - */ - dev->mtu = new_mtu; - - if (netif_running(dev)) { - bnx2x_nic_unload(bp, UNLOAD_NORMAL); - rc = bnx2x_nic_load(bp, LOAD_NORMAL); - } - - return rc; -} - -static void bnx2x_tx_timeout(struct net_device *dev) -{ - struct bnx2x *bp = netdev_priv(dev); - -#ifdef BNX2X_STOP_ON_ERROR - if (!bp->panic) - bnx2x_panic(); -#endif - /* This allows the netif to be shutdown gracefully before resetting */ - schedule_delayed_work(&bp->reset_task, 0); -} - -#ifdef BCM_VLAN -/* called with rtnl_lock */ -static void bnx2x_vlan_rx_register(struct net_device *dev, - struct vlan_group *vlgrp) -{ - struct bnx2x *bp = netdev_priv(dev); - - bp->vlgrp = vlgrp; - - /* Set flags according to the required capabilities */ - bp->flags &= ~(HW_VLAN_RX_FLAG | HW_VLAN_TX_FLAG); - - if (dev->features & NETIF_F_HW_VLAN_TX) - bp->flags |= HW_VLAN_TX_FLAG; - - if (dev->features & NETIF_F_HW_VLAN_RX) - bp->flags |= HW_VLAN_RX_FLAG; - - if (netif_running(dev)) - bnx2x_set_client_config(bp); -} - -#endif - #ifdef CONFIG_NET_POLL_CONTROLLER static void poll_bnx2x(struct net_device *dev) { @@ -13370,73 +10876,6 @@ static void __devexit bnx2x_remove_one(struct pci_dev *pdev) pci_set_drvdata(pdev, NULL); } -static int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct bnx2x *bp; - - if (!dev) { - dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n"); - return -ENODEV; - } - bp = netdev_priv(dev); - - rtnl_lock(); - - pci_save_state(pdev); - - if (!netif_running(dev)) { - rtnl_unlock(); - return 0; - } - - netif_device_detach(dev); - - bnx2x_nic_unload(bp, UNLOAD_CLOSE); - - bnx2x_set_power_state(bp, pci_choose_state(pdev, state)); - - rtnl_unlock(); - - return 0; -} - -static int bnx2x_resume(struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct bnx2x *bp; - int rc; - - if (!dev) { - dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n"); - return -ENODEV; - } - bp = netdev_priv(dev); - - if (bp->recovery_state != BNX2X_RECOVERY_DONE) { - printk(KERN_ERR "Handling parity error recovery. Try again later\n"); - return -EAGAIN; - } - - rtnl_lock(); - - pci_restore_state(pdev); - - if (!netif_running(dev)) { - rtnl_unlock(); - return 0; - } - - bnx2x_set_power_state(bp, PCI_D0); - netif_device_attach(dev); - - rc = bnx2x_nic_load(bp, LOAD_OPEN); - - rtnl_unlock(); - - return rc; -} - static int bnx2x_eeh_nic_unload(struct bnx2x *bp) { int i; @@ -13758,7 +11197,7 @@ static int bnx2x_cnic_ctl_send_bh(struct bnx2x *bp, struct cnic_ctl_info *ctl) /* * for commands that have no data */ -static int bnx2x_cnic_notify(struct bnx2x *bp, int cmd) +int bnx2x_cnic_notify(struct bnx2x *bp, int cmd) { struct cnic_ctl_info ctl = {0}; @@ -13826,7 +11265,7 @@ static int bnx2x_drv_ctl(struct net_device *dev, struct drv_ctl_info *ctl) return rc; } -static void bnx2x_setup_cnic_irq_info(struct bnx2x *bp) +void bnx2x_setup_cnic_irq_info(struct bnx2x *bp) { struct cnic_eth_dev *cp = &bp->cnic_eth_dev; |