diff options
Diffstat (limited to 'drivers/net/vxge/vxge-main.c')
| -rw-r--r-- | drivers/net/vxge/vxge-main.c | 4854 |
1 files changed, 0 insertions, 4854 deletions
diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c deleted file mode 100644 index 178348a258d2..000000000000 --- a/drivers/net/vxge/vxge-main.c +++ /dev/null @@ -1,4854 +0,0 @@ -/****************************************************************************** -* This software may be used and distributed according to the terms of -* the GNU General Public License (GPL), incorporated herein by reference. -* Drivers based on or derived from this code fall under the GPL and must -* retain the authorship, copyright and license notice. This file is not -* a complete program and may only be used when the entire operating -* system is licensed under the GPL. -* See the file COPYING in this distribution for more information. -* -* vxge-main.c: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O -* Virtualized Server Adapter. -* Copyright(c) 2002-2010 Exar Corp. -* -* The module loadable parameters that are supported by the driver and a brief -* explanation of all the variables: -* vlan_tag_strip: -* Strip VLAN Tag enable/disable. Instructs the device to remove -* the VLAN tag from all received tagged frames that are not -* replicated at the internal L2 switch. -* 0 - Do not strip the VLAN tag. -* 1 - Strip the VLAN tag. -* -* addr_learn_en: -* Enable learning the mac address of the guest OS interface in -* a virtualization environment. -* 0 - DISABLE -* 1 - ENABLE -* -* max_config_port: -* Maximum number of port to be supported. -* MIN -1 and MAX - 2 -* -* max_config_vpath: -* This configures the maximum no of VPATH configures for each -* device function. -* MIN - 1 and MAX - 17 -* -* max_config_dev: -* This configures maximum no of Device function to be enabled. -* MIN - 1 and MAX - 17 -* -******************************************************************************/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/bitops.h> -#include <linux/if_vlan.h> -#include <linux/interrupt.h> -#include <linux/pci.h> -#include <linux/slab.h> -#include <linux/tcp.h> -#include <net/ip.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/firmware.h> -#include <linux/net_tstamp.h> -#include <linux/prefetch.h> -#include "vxge-main.h" -#include "vxge-reg.h" - -MODULE_LICENSE("Dual BSD/GPL"); -MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O" - "Virtualized Server Adapter"); - -static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = { - {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID, - PCI_ANY_ID}, - {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID, - PCI_ANY_ID}, - {0} -}; - -MODULE_DEVICE_TABLE(pci, vxge_id_table); - -VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE); -VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT); -VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT); -VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT); -VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT); -VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV); - -static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] = - {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31}; -static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] = - {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF}; -module_param_array(bw_percentage, uint, NULL, 0); - -static struct vxge_drv_config *driver_config; - -static inline int is_vxge_card_up(struct vxgedev *vdev) -{ - return test_bit(__VXGE_STATE_CARD_UP, &vdev->state); -} - -static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo) -{ - struct sk_buff **skb_ptr = NULL; - struct sk_buff **temp; -#define NR_SKB_COMPLETED 128 - struct sk_buff *completed[NR_SKB_COMPLETED]; - int more; - - do { - more = 0; - skb_ptr = completed; - - if (__netif_tx_trylock(fifo->txq)) { - vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr, - NR_SKB_COMPLETED, &more); - __netif_tx_unlock(fifo->txq); - } - - /* free SKBs */ - for (temp = completed; temp != skb_ptr; temp++) - dev_kfree_skb_irq(*temp); - } while (more); -} - -static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev) -{ - int i; - - /* Complete all transmits */ - for (i = 0; i < vdev->no_of_vpath; i++) - VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo); -} - -static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev) -{ - int i; - struct vxge_ring *ring; - - /* Complete all receives*/ - for (i = 0; i < vdev->no_of_vpath; i++) { - ring = &vdev->vpaths[i].ring; - vxge_hw_vpath_poll_rx(ring->handle); - } -} - -/* - * vxge_callback_link_up - * - * This function is called during interrupt context to notify link up state - * change. - */ -static void vxge_callback_link_up(struct __vxge_hw_device *hldev) -{ - struct net_device *dev = hldev->ndev; - struct vxgedev *vdev = netdev_priv(dev); - - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", - vdev->ndev->name, __func__, __LINE__); - netdev_notice(vdev->ndev, "Link Up\n"); - vdev->stats.link_up++; - - netif_carrier_on(vdev->ndev); - netif_tx_wake_all_queues(vdev->ndev); - - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__); -} - -/* - * vxge_callback_link_down - * - * This function is called during interrupt context to notify link down state - * change. - */ -static void vxge_callback_link_down(struct __vxge_hw_device *hldev) -{ - struct net_device *dev = hldev->ndev; - struct vxgedev *vdev = netdev_priv(dev); - - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d", vdev->ndev->name, __func__, __LINE__); - netdev_notice(vdev->ndev, "Link Down\n"); - - vdev->stats.link_down++; - netif_carrier_off(vdev->ndev); - netif_tx_stop_all_queues(vdev->ndev); - - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__); -} - -/* - * vxge_rx_alloc - * - * Allocate SKB. - */ -static struct sk_buff * -vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size) -{ - struct net_device *dev; - struct sk_buff *skb; - struct vxge_rx_priv *rx_priv; - - dev = ring->ndev; - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", - ring->ndev->name, __func__, __LINE__); - - rx_priv = vxge_hw_ring_rxd_private_get(dtrh); - - /* try to allocate skb first. this one may fail */ - skb = netdev_alloc_skb(dev, skb_size + - VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); - if (skb == NULL) { - vxge_debug_mem(VXGE_ERR, - "%s: out of memory to allocate SKB", dev->name); - ring->stats.skb_alloc_fail++; - return NULL; - } - - vxge_debug_mem(VXGE_TRACE, - "%s: %s:%d Skb : 0x%p", ring->ndev->name, - __func__, __LINE__, skb); - - skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); - - rx_priv->skb = skb; - rx_priv->skb_data = NULL; - rx_priv->data_size = skb_size; - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); - - return skb; -} - -/* - * vxge_rx_map - */ -static int vxge_rx_map(void *dtrh, struct vxge_ring *ring) -{ - struct vxge_rx_priv *rx_priv; - dma_addr_t dma_addr; - - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", - ring->ndev->name, __func__, __LINE__); - rx_priv = vxge_hw_ring_rxd_private_get(dtrh); - - rx_priv->skb_data = rx_priv->skb->data; - dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data, - rx_priv->data_size, PCI_DMA_FROMDEVICE); - - if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) { - ring->stats.pci_map_fail++; - return -EIO; - } - vxge_debug_mem(VXGE_TRACE, - "%s: %s:%d 1 buffer mode dma_addr = 0x%llx", - ring->ndev->name, __func__, __LINE__, - (unsigned long long)dma_addr); - vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size); - - rx_priv->data_dma = dma_addr; - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); - - return 0; -} - -/* - * vxge_rx_initial_replenish - * Allocation of RxD as an initial replenish procedure. - */ -static enum vxge_hw_status -vxge_rx_initial_replenish(void *dtrh, void *userdata) -{ - struct vxge_ring *ring = (struct vxge_ring *)userdata; - struct vxge_rx_priv *rx_priv; - - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", - ring->ndev->name, __func__, __LINE__); - if (vxge_rx_alloc(dtrh, ring, - VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL) - return VXGE_HW_FAIL; - - if (vxge_rx_map(dtrh, ring)) { - rx_priv = vxge_hw_ring_rxd_private_get(dtrh); - dev_kfree_skb(rx_priv->skb); - - return VXGE_HW_FAIL; - } - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); - - return VXGE_HW_OK; -} - -static inline void -vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan, - int pkt_length, struct vxge_hw_ring_rxd_info *ext_info) -{ - - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", - ring->ndev->name, __func__, __LINE__); - skb_record_rx_queue(skb, ring->driver_id); - skb->protocol = eth_type_trans(skb, ring->ndev); - - u64_stats_update_begin(&ring->stats.syncp); - ring->stats.rx_frms++; - ring->stats.rx_bytes += pkt_length; - - if (skb->pkt_type == PACKET_MULTICAST) - ring->stats.rx_mcast++; - u64_stats_update_end(&ring->stats.syncp); - - vxge_debug_rx(VXGE_TRACE, - "%s: %s:%d skb protocol = %d", - ring->ndev->name, __func__, __LINE__, skb->protocol); - - if (ext_info->vlan && - ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE) - __vlan_hwaccel_put_tag(skb, ext_info->vlan); - napi_gro_receive(ring->napi_p, skb); - - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); -} - -static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring, - struct vxge_rx_priv *rx_priv) -{ - pci_dma_sync_single_for_device(ring->pdev, - rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE); - - vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size); - vxge_hw_ring_rxd_pre_post(ring->handle, dtr); -} - -static inline void vxge_post(int *dtr_cnt, void **first_dtr, - void *post_dtr, struct __vxge_hw_ring *ringh) -{ - int dtr_count = *dtr_cnt; - if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) { - if (*first_dtr) - vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr); - *first_dtr = post_dtr; - } else - vxge_hw_ring_rxd_post_post(ringh, post_dtr); - dtr_count++; - *dtr_cnt = dtr_count; -} - -/* - * vxge_rx_1b_compl - * - * If the interrupt is because of a received frame or if the receive ring - * contains fresh as yet un-processed frames, this function is called. - */ -static enum vxge_hw_status -vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr, - u8 t_code, void *userdata) -{ - struct vxge_ring *ring = (struct vxge_ring *)userdata; - struct net_device *dev = ring->ndev; - unsigned int dma_sizes; - void *first_dtr = NULL; - int dtr_cnt = 0; - int data_size; - dma_addr_t data_dma; - int pkt_length; - struct sk_buff *skb; - struct vxge_rx_priv *rx_priv; - struct vxge_hw_ring_rxd_info ext_info; - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", - ring->ndev->name, __func__, __LINE__); - - do { - prefetch((char *)dtr + L1_CACHE_BYTES); - rx_priv = vxge_hw_ring_rxd_private_get(dtr); - skb = rx_priv->skb; - data_size = rx_priv->data_size; - data_dma = rx_priv->data_dma; - prefetch(rx_priv->skb_data); - - vxge_debug_rx(VXGE_TRACE, - "%s: %s:%d skb = 0x%p", - ring->ndev->name, __func__, __LINE__, skb); - - vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes); - pkt_length = dma_sizes; - - pkt_length -= ETH_FCS_LEN; - - vxge_debug_rx(VXGE_TRACE, - "%s: %s:%d Packet Length = %d", - ring->ndev->name, __func__, __LINE__, pkt_length); - - vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info); - - /* check skb validity */ - vxge_assert(skb); - - prefetch((char *)skb + L1_CACHE_BYTES); - if (unlikely(t_code)) { - if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) != - VXGE_HW_OK) { - - ring->stats.rx_errors++; - vxge_debug_rx(VXGE_TRACE, - "%s: %s :%d Rx T_code is %d", - ring->ndev->name, __func__, - __LINE__, t_code); - - /* If the t_code is not supported and if the - * t_code is other than 0x5 (unparseable packet - * such as unknown UPV6 header), Drop it !!! - */ - vxge_re_pre_post(dtr, ring, rx_priv); - - vxge_post(&dtr_cnt, &first_dtr, dtr, ringh); - ring->stats.rx_dropped++; - continue; - } - } - - if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) { - if (vxge_rx_alloc(dtr, ring, data_size) != NULL) { - if (!vxge_rx_map(dtr, ring)) { - skb_put(skb, pkt_length); - - pci_unmap_single(ring->pdev, data_dma, - data_size, PCI_DMA_FROMDEVICE); - - vxge_hw_ring_rxd_pre_post(ringh, dtr); - vxge_post(&dtr_cnt, &first_dtr, dtr, - ringh); - } else { - dev_kfree_skb(rx_priv->skb); - rx_priv->skb = skb; - rx_priv->data_size = data_size; - vxge_re_pre_post(dtr, ring, rx_priv); - - vxge_post(&dtr_cnt, &first_dtr, dtr, - ringh); - ring->stats.rx_dropped++; - break; - } - } else { - vxge_re_pre_post(dtr, ring, rx_priv); - - vxge_post(&dtr_cnt, &first_dtr, dtr, ringh); - ring->stats.rx_dropped++; - break; - } - } else { - struct sk_buff *skb_up; - - skb_up = netdev_alloc_skb(dev, pkt_length + - VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); - if (skb_up != NULL) { - skb_reserve(skb_up, - VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); - - pci_dma_sync_single_for_cpu(ring->pdev, - data_dma, data_size, - PCI_DMA_FROMDEVICE); - - vxge_debug_mem(VXGE_TRACE, - "%s: %s:%d skb_up = %p", - ring->ndev->name, __func__, - __LINE__, skb); - memcpy(skb_up->data, skb->data, pkt_length); - - vxge_re_pre_post(dtr, ring, rx_priv); - - vxge_post(&dtr_cnt, &first_dtr, dtr, - ringh); - /* will netif_rx small SKB instead */ - skb = skb_up; - skb_put(skb, pkt_length); - } else { - vxge_re_pre_post(dtr, ring, rx_priv); - - vxge_post(&dtr_cnt, &first_dtr, dtr, ringh); - vxge_debug_rx(VXGE_ERR, - "%s: vxge_rx_1b_compl: out of " - "memory", dev->name); - ring->stats.skb_alloc_fail++; - break; - } - } - - if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) && - !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) && - (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */ - ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK && - ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK) - skb->ip_summed = CHECKSUM_UNNECESSARY; - else - skb_checksum_none_assert(skb); - - - if (ring->rx_hwts) { - struct skb_shared_hwtstamps *skb_hwts; - u32 ns = *(u32 *)(skb->head + pkt_length); - - skb_hwts = skb_hwtstamps(skb); - skb_hwts->hwtstamp = ns_to_ktime(ns); - skb_hwts->syststamp.tv64 = 0; - } - - /* rth_hash_type and rth_it_hit are non-zero regardless of - * whether rss is enabled. Only the rth_value is zero/non-zero - * if rss is disabled/enabled, so key off of that. - */ - if (ext_info.rth_value) - skb->rxhash = ext_info.rth_value; - - vxge_rx_complete(ring, skb, ext_info.vlan, - pkt_length, &ext_info); - - ring->budget--; - ring->pkts_processed++; - if (!ring->budget) - break; - - } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr, - &t_code) == VXGE_HW_OK); - - if (first_dtr) - vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr); - - vxge_debug_entryexit(VXGE_TRACE, - "%s:%d Exiting...", - __func__, __LINE__); - return VXGE_HW_OK; -} - -/* - * vxge_xmit_compl - * - * If an interrupt was raised to indicate DMA complete of the Tx packet, - * this function is called. It identifies the last TxD whose buffer was - * freed and frees all skbs whose data have already DMA'ed into the NICs - * internal memory. - */ -static enum vxge_hw_status -vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr, - enum vxge_hw_fifo_tcode t_code, void *userdata, - struct sk_buff ***skb_ptr, int nr_skb, int *more) -{ - struct vxge_fifo *fifo = (struct vxge_fifo *)userdata; - struct sk_buff *skb, **done_skb = *skb_ptr; - int pkt_cnt = 0; - - vxge_debug_entryexit(VXGE_TRACE, - "%s:%d Entered....", __func__, __LINE__); - - do { - int frg_cnt; - skb_frag_t *frag; - int i = 0, j; - struct vxge_tx_priv *txd_priv = - vxge_hw_fifo_txdl_private_get(dtr); - - skb = txd_priv->skb; - frg_cnt = skb_shinfo(skb)->nr_frags; - frag = &skb_shinfo(skb)->frags[0]; - - vxge_debug_tx(VXGE_TRACE, - "%s: %s:%d fifo_hw = %p dtr = %p " - "tcode = 0x%x", fifo->ndev->name, __func__, - __LINE__, fifo_hw, dtr, t_code); - /* check skb validity */ - vxge_assert(skb); - vxge_debug_tx(VXGE_TRACE, - "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d", - fifo->ndev->name, __func__, __LINE__, - skb, txd_priv, frg_cnt); - if (unlikely(t_code)) { - fifo->stats.tx_errors++; - vxge_debug_tx(VXGE_ERR, - "%s: tx: dtr %p completed due to " - "error t_code %01x", fifo->ndev->name, - dtr, t_code); - vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code); - } - - /* for unfragmented skb */ - pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++], - skb_headlen(skb), PCI_DMA_TODEVICE); - - for (j = 0; j < frg_cnt; j++) { - pci_unmap_page(fifo->pdev, - txd_priv->dma_buffers[i++], - frag->size, PCI_DMA_TODEVICE); - frag += 1; - } - - vxge_hw_fifo_txdl_free(fifo_hw, dtr); - - /* Updating the statistics block */ - u64_stats_update_begin(&fifo->stats.syncp); - fifo->stats.tx_frms++; - fifo->stats.tx_bytes += skb->len; - u64_stats_update_end(&fifo->stats.syncp); - - *done_skb++ = skb; - - if (--nr_skb <= 0) { - *more = 1; - break; - } - - pkt_cnt++; - if (pkt_cnt > fifo->indicate_max_pkts) - break; - - } while (vxge_hw_fifo_txdl_next_completed(fifo_hw, - &dtr, &t_code) == VXGE_HW_OK); - - *skb_ptr = done_skb; - if (netif_tx_queue_stopped(fifo->txq)) - netif_tx_wake_queue(fifo->txq); - - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d Exiting...", - fifo->ndev->name, __func__, __LINE__); - return VXGE_HW_OK; -} - -/* select a vpath to transmit the packet */ -static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb) -{ - u16 queue_len, counter = 0; - if (skb->protocol == htons(ETH_P_IP)) { - struct iphdr *ip; - struct tcphdr *th; - - ip = ip_hdr(skb); - - if (!ip_is_fragment(ip)) { - th = (struct tcphdr *)(((unsigned char *)ip) + - ip->ihl*4); - - queue_len = vdev->no_of_vpath; - counter = (ntohs(th->source) + - ntohs(th->dest)) & - vdev->vpath_selector[queue_len - 1]; - if (counter >= queue_len) - counter = queue_len - 1; - } - } - return counter; -} - -static enum vxge_hw_status vxge_search_mac_addr_in_list( - struct vxge_vpath *vpath, u64 del_mac) -{ - struct list_head *entry, *next; - list_for_each_safe(entry, next, &vpath->mac_addr_list) { - if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) - return TRUE; - } - return FALSE; -} - -static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac) -{ - struct vxge_mac_addrs *new_mac_entry; - u8 *mac_address = NULL; - - if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT) - return TRUE; - - new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC); - if (!new_mac_entry) { - vxge_debug_mem(VXGE_ERR, - "%s: memory allocation failed", - VXGE_DRIVER_NAME); - return FALSE; - } - - list_add(&new_mac_entry->item, &vpath->mac_addr_list); - - /* Copy the new mac address to the list */ - mac_address = (u8 *)&new_mac_entry->macaddr; - memcpy(mac_address, mac->macaddr, ETH_ALEN); - - new_mac_entry->state = mac->state; - vpath->mac_addr_cnt++; - - if (is_multicast_ether_addr(mac->macaddr)) - vpath->mcast_addr_cnt++; - - return TRUE; -} - -/* Add a mac address to DA table */ -static enum vxge_hw_status -vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac) -{ - enum vxge_hw_status status = VXGE_HW_OK; - struct vxge_vpath *vpath; - enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode; - - if (is_multicast_ether_addr(mac->macaddr)) - duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE; - else - duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE; - - vpath = &vdev->vpaths[mac->vpath_no]; - status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr, - mac->macmask, duplicate_mode); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "DA config add entry failed for vpath:%d", - vpath->device_id); - } else - if (FALSE == vxge_mac_list_add(vpath, mac)) - status = -EPERM; - - return status; -} - -static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header) -{ - struct macInfo mac_info; - u8 *mac_address = NULL; - u64 mac_addr = 0, vpath_vector = 0; - int vpath_idx = 0; - enum vxge_hw_status status = VXGE_HW_OK; - struct vxge_vpath *vpath = NULL; - struct __vxge_hw_device *hldev; - - hldev = pci_get_drvdata(vdev->pdev); - - mac_address = (u8 *)&mac_addr; - memcpy(mac_address, mac_header, ETH_ALEN); - - /* Is this mac address already in the list? */ - for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { - vpath = &vdev->vpaths[vpath_idx]; - if (vxge_search_mac_addr_in_list(vpath, mac_addr)) - return vpath_idx; - } - - memset(&mac_info, 0, sizeof(struct macInfo)); - memcpy(mac_info.macaddr, mac_header, ETH_ALEN); - - /* Any vpath has room to add mac address to its da table? */ - for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { - vpath = &vdev->vpaths[vpath_idx]; - if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) { - /* Add this mac address to this vpath */ - mac_info.vpath_no = vpath_idx; - mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE; - status = vxge_add_mac_addr(vdev, &mac_info); - if (status != VXGE_HW_OK) - return -EPERM; - return vpath_idx; - } - } - - mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST; - vpath_idx = 0; - mac_info.vpath_no = vpath_idx; - /* Is the first vpath already selected as catch-basin ? */ - vpath = &vdev->vpaths[vpath_idx]; - if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) { - /* Add this mac address to this vpath */ - if (FALSE == vxge_mac_list_add(vpath, &mac_info)) - return -EPERM; - return vpath_idx; - } - - /* Select first vpath as catch-basin */ - vpath_vector = vxge_mBIT(vpath->device_id); - status = vxge_hw_mgmt_reg_write(vpath->vdev->devh, - vxge_hw_mgmt_reg_type_mrpcim, - 0, - (ulong)offsetof( - struct vxge_hw_mrpcim_reg, - rts_mgr_cbasin_cfg), - vpath_vector); - if (status != VXGE_HW_OK) { - vxge_debug_tx(VXGE_ERR, - "%s: Unable to set the vpath-%d in catch-basin mode", - VXGE_DRIVER_NAME, vpath->device_id); - return -EPERM; - } - - if (FALSE == vxge_mac_list_add(vpath, &mac_info)) - return -EPERM; - - return vpath_idx; -} - -/** - * vxge_xmit - * @skb : the socket buffer containing the Tx data. - * @dev : device pointer. - * - * This function is the Tx entry point of the driver. Neterion NIC supports - * certain protocol assist features on Tx side, namely CSO, S/G, LSO. -*/ -static netdev_tx_t -vxge_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct vxge_fifo *fifo = NULL; - void *dtr_priv; - void *dtr = NULL; - struct vxgedev *vdev = NULL; - enum vxge_hw_status status; - int frg_cnt, first_frg_len; - skb_frag_t *frag; - int i = 0, j = 0, avail; - u64 dma_pointer; - struct vxge_tx_priv *txdl_priv = NULL; - struct __vxge_hw_fifo *fifo_hw; - int offload_type; - int vpath_no = 0; - - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", - dev->name, __func__, __LINE__); - - /* A buffer with no data will be dropped */ - if (unlikely(skb->len <= 0)) { - vxge_debug_tx(VXGE_ERR, - "%s: Buffer has no data..", dev->name); - dev_kfree_skb(skb); - return NETDEV_TX_OK; - } - - vdev = netdev_priv(dev); - - if (unlikely(!is_vxge_card_up(vdev))) { - vxge_debug_tx(VXGE_ERR, - "%s: vdev not initialized", dev->name); - dev_kfree_skb(skb); - return NETDEV_TX_OK; - } - - if (vdev->config.addr_learn_en) { - vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN); - if (vpath_no == -EPERM) { - vxge_debug_tx(VXGE_ERR, - "%s: Failed to store the mac address", - dev->name); - dev_kfree_skb(skb); - return NETDEV_TX_OK; - } - } - - if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) - vpath_no = skb_get_queue_mapping(skb); - else if (vdev->config.tx_steering_type == TX_PORT_STEERING) - vpath_no = vxge_get_vpath_no(vdev, skb); - - vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no); - - if (vpath_no >= vdev->no_of_vpath) - vpath_no = 0; - - fifo = &vdev->vpaths[vpath_no].fifo; - fifo_hw = fifo->handle; - - if (netif_tx_queue_stopped(fifo->txq)) - return NETDEV_TX_BUSY; - - avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw); - if (avail == 0) { - vxge_debug_tx(VXGE_ERR, - "%s: No free TXDs available", dev->name); - fifo->stats.txd_not_free++; - goto _exit0; - } - - /* Last TXD? Stop tx queue to avoid dropping packets. TX - * completion will resume the queue. - */ - if (avail == 1) - netif_tx_stop_queue(fifo->txq); - - status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv); - if (unlikely(status != VXGE_HW_OK)) { - vxge_debug_tx(VXGE_ERR, - "%s: Out of descriptors .", dev->name); - fifo->stats.txd_out_of_desc++; - goto _exit0; - } - - vxge_debug_tx(VXGE_TRACE, - "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p", - dev->name, __func__, __LINE__, - fifo_hw, dtr, dtr_priv); - - if (vlan_tx_tag_present(skb)) { - u16 vlan_tag = vlan_tx_tag_get(skb); - vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag); - } - - first_frg_len = skb_headlen(skb); - - dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len, - PCI_DMA_TODEVICE); - - if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) { - vxge_hw_fifo_txdl_free(fifo_hw, dtr); - fifo->stats.pci_map_fail++; - goto _exit0; - } - - txdl_priv = vxge_hw_fifo_txdl_private_get(dtr); - txdl_priv->skb = skb; - txdl_priv->dma_buffers[j] = dma_pointer; - - frg_cnt = skb_shinfo(skb)->nr_frags; - vxge_debug_tx(VXGE_TRACE, - "%s: %s:%d skb = %p txdl_priv = %p " - "frag_cnt = %d dma_pointer = 0x%llx", dev->name, - __func__, __LINE__, skb, txdl_priv, - frg_cnt, (unsigned long long)dma_pointer); - - vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer, - first_frg_len); - - frag = &skb_shinfo(skb)->frags[0]; - for (i = 0; i < frg_cnt; i++) { - /* ignore 0 length fragment */ - if (!frag->size) - continue; - - dma_pointer = (u64) pci_map_page(fifo->pdev, frag->page, - frag->page_offset, frag->size, - PCI_DMA_TODEVICE); - - if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) - goto _exit2; - vxge_debug_tx(VXGE_TRACE, - "%s: %s:%d frag = %d dma_pointer = 0x%llx", - dev->name, __func__, __LINE__, i, - (unsigned long long)dma_pointer); - - txdl_priv->dma_buffers[j] = dma_pointer; - vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer, - frag->size); - frag += 1; - } - - offload_type = vxge_offload_type(skb); - - if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) { - int mss = vxge_tcp_mss(skb); - if (mss) { - vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d", - dev->name, __func__, __LINE__, mss); - vxge_hw_fifo_txdl_mss_set(dtr, mss); - } else { - vxge_assert(skb->len <= - dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE); - vxge_assert(0); - goto _exit1; - } - } - - if (skb->ip_summed == CHECKSUM_PARTIAL) - vxge_hw_fifo_txdl_cksum_set_bits(dtr, - VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN | - VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN | - VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN); - - vxge_hw_fifo_txdl_post(fifo_hw, dtr); - - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...", - dev->name, __func__, __LINE__); - return NETDEV_TX_OK; - -_exit2: - vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name); -_exit1: - j = 0; - frag = &skb_shinfo(skb)->frags[0]; - - pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++], - skb_headlen(skb), PCI_DMA_TODEVICE); - - for (; j < i; j++) { - pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j], - frag->size, PCI_DMA_TODEVICE); - frag += 1; - } - - vxge_hw_fifo_txdl_free(fifo_hw, dtr); -_exit0: - netif_tx_stop_queue(fifo->txq); - dev_kfree_skb(skb); - - return NETDEV_TX_OK; -} - -/* - * vxge_rx_term - * - * Function will be called by hw function to abort all outstanding receive - * descriptors. - */ -static void -vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata) -{ - struct vxge_ring *ring = (struct vxge_ring *)userdata; - struct vxge_rx_priv *rx_priv = - vxge_hw_ring_rxd_private_get(dtrh); - - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", - ring->ndev->name, __func__, __LINE__); - if (state != VXGE_HW_RXD_STATE_POSTED) - return; - - pci_unmap_single(ring->pdev, rx_priv->data_dma, - rx_priv->data_size, PCI_DMA_FROMDEVICE); - - dev_kfree_skb(rx_priv->skb); - rx_priv->skb_data = NULL; - - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d Exiting...", - ring->ndev->name, __func__, __LINE__); -} - -/* - * vxge_tx_term - * - * Function will be called to abort all outstanding tx descriptors - */ -static void -vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata) -{ - struct vxge_fifo *fifo = (struct vxge_fifo *)userdata; - skb_frag_t *frag; - int i = 0, j, frg_cnt; - struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh); - struct sk_buff *skb = txd_priv->skb; - - vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); - - if (state != VXGE_HW_TXDL_STATE_POSTED) - return; - - /* check skb validity */ - vxge_assert(skb); - frg_cnt = skb_shinfo(skb)->nr_frags; - frag = &skb_shinfo(skb)->frags[0]; - - /* for unfragmented skb */ - pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++], - skb_headlen(skb), PCI_DMA_TODEVICE); - - for (j = 0; j < frg_cnt; j++) { - pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++], - frag->size, PCI_DMA_TODEVICE); - frag += 1; - } - - dev_kfree_skb(skb); - - vxge_debug_entryexit(VXGE_TRACE, - "%s:%d Exiting...", __func__, __LINE__); -} - -static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac) -{ - struct list_head *entry, *next; - u64 del_mac = 0; - u8 *mac_address = (u8 *) (&del_mac); - - /* Copy the mac address to delete from the list */ - memcpy(mac_address, mac->macaddr, ETH_ALEN); - - list_for_each_safe(entry, next, &vpath->mac_addr_list) { - if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) { - list_del(entry); - kfree((struct vxge_mac_addrs *)entry); - vpath->mac_addr_cnt--; - - if (is_multicast_ether_addr(mac->macaddr)) - vpath->mcast_addr_cnt--; - return TRUE; - } - } - - return FALSE; -} - -/* delete a mac address from DA table */ -static enum vxge_hw_status -vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac) -{ - enum vxge_hw_status status = VXGE_HW_OK; - struct vxge_vpath *vpath; - - vpath = &vdev->vpaths[mac->vpath_no]; - status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr, - mac->macmask); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "DA config delete entry failed for vpath:%d", - vpath->device_id); - } else - vxge_mac_list_del(vpath, mac); - return status; -} - -/** - * vxge_set_multicast - * @dev: pointer to the device structure - * - * Entry point for multicast address enable/disable - * This function is a driver entry point which gets called by the kernel - * whenever multicast addresses must be enabled/disabled. This also gets - * called to set/reset promiscuous mode. Depending on the deivce flag, we - * determine, if multicast address must be enabled or if promiscuous mode - * is to be disabled etc. - */ -static void vxge_set_multicast(struct net_device *dev) -{ - struct netdev_hw_addr *ha; - struct vxgedev *vdev; - int i, mcast_cnt = 0; - struct __vxge_hw_device *hldev; - struct vxge_vpath *vpath; - enum vxge_hw_status status = VXGE_HW_OK; - struct macInfo mac_info; - int vpath_idx = 0; - struct vxge_mac_addrs *mac_entry; - struct list_head *list_head; - struct list_head *entry, *next; - u8 *mac_address = NULL; - - vxge_debug_entryexit(VXGE_TRACE, - "%s:%d", __func__, __LINE__); - - vdev = netdev_priv(dev); - hldev = (struct __vxge_hw_device *)vdev->devh; - - if (unlikely(!is_vxge_card_up(vdev))) - return; - - if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) { - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - vxge_assert(vpath->is_open); - status = vxge_hw_vpath_mcast_enable(vpath->handle); - if (status != VXGE_HW_OK) - vxge_debug_init(VXGE_ERR, "failed to enable " - "multicast, status %d", status); - vdev->all_multi_flg = 1; - } - } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) { - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - vxge_assert(vpath->is_open); - status = vxge_hw_vpath_mcast_disable(vpath->handle); - if (status != VXGE_HW_OK) - vxge_debug_init(VXGE_ERR, "failed to disable " - "multicast, status %d", status); - vdev->all_multi_flg = 0; - } - } - - - if (!vdev->config.addr_learn_en) { - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - vxge_assert(vpath->is_open); - - if (dev->flags & IFF_PROMISC) - status = vxge_hw_vpath_promisc_enable( - vpath->handle); - else - status = vxge_hw_vpath_promisc_disable( - vpath->handle); - if (status != VXGE_HW_OK) - vxge_debug_init(VXGE_ERR, "failed to %s promisc" - ", status %d", dev->flags&IFF_PROMISC ? - "enable" : "disable", status); - } - } - - memset(&mac_info, 0, sizeof(struct macInfo)); - /* Update individual M_CAST address list */ - if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) { - mcast_cnt = vdev->vpaths[0].mcast_addr_cnt; - list_head = &vdev->vpaths[0].mac_addr_list; - if ((netdev_mc_count(dev) + - (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) > - vdev->vpaths[0].max_mac_addr_cnt) - goto _set_all_mcast; - - /* Delete previous MC's */ - for (i = 0; i < mcast_cnt; i++) { - list_for_each_safe(entry, next, list_head) { - mac_entry = (struct vxge_mac_addrs *)entry; - /* Copy the mac address to delete */ - mac_address = (u8 *)&mac_entry->macaddr; - memcpy(mac_info.macaddr, mac_address, ETH_ALEN); - - if (is_multicast_ether_addr(mac_info.macaddr)) { - for (vpath_idx = 0; vpath_idx < - vdev->no_of_vpath; - vpath_idx++) { - mac_info.vpath_no = vpath_idx; - status = vxge_del_mac_addr( - vdev, - &mac_info); - } - } - } - } - - /* Add new ones */ - netdev_for_each_mc_addr(ha, dev) { - memcpy(mac_info.macaddr, ha->addr, ETH_ALEN); - for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; - vpath_idx++) { - mac_info.vpath_no = vpath_idx; - mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE; - status = vxge_add_mac_addr(vdev, &mac_info); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "%s:%d Setting individual" - "multicast address failed", - __func__, __LINE__); - goto _set_all_mcast; - } - } - } - - return; -_set_all_mcast: - mcast_cnt = vdev->vpaths[0].mcast_addr_cnt; - /* Delete previous MC's */ - for (i = 0; i < mcast_cnt; i++) { - list_for_each_safe(entry, next, list_head) { - mac_entry = (struct vxge_mac_addrs *)entry; - /* Copy the mac address to delete */ - mac_address = (u8 *)&mac_entry->macaddr; - memcpy(mac_info.macaddr, mac_address, ETH_ALEN); - - if (is_multicast_ether_addr(mac_info.macaddr)) - break; - } - - for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; - vpath_idx++) { - mac_info.vpath_no = vpath_idx; - status = vxge_del_mac_addr(vdev, &mac_info); - } - } - - /* Enable all multicast */ - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - vxge_assert(vpath->is_open); - - status = vxge_hw_vpath_mcast_enable(vpath->handle); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "%s:%d Enabling all multicasts failed", - __func__, __LINE__); - } - vdev->all_multi_flg = 1; - } - dev->flags |= IFF_ALLMULTI; - } - - vxge_debug_entryexit(VXGE_TRACE, - "%s:%d Exiting...", __func__, __LINE__); -} - -/** - * vxge_set_mac_addr - * @dev: pointer to the device structure - * - * Update entry "0" (default MAC addr) - */ -static int vxge_set_mac_addr(struct net_device *dev, void *p) -{ - struct sockaddr *addr = p; - struct vxgedev *vdev; - struct __vxge_hw_device *hldev; - enum vxge_hw_status status = VXGE_HW_OK; - struct macInfo mac_info_new, mac_info_old; - int vpath_idx = 0; - - vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); - - vdev = netdev_priv(dev); - hldev = vdev->devh; - - if (!is_valid_ether_addr(addr->sa_data)) - return -EINVAL; - - memset(&mac_info_new, 0, sizeof(struct macInfo)); - memset(&mac_info_old, 0, sizeof(struct macInfo)); - - vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...", - __func__, __LINE__); - - /* Get the old address */ - memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len); - - /* Copy the new address */ - memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len); - - /* First delete the old mac address from all the vpaths - as we can't specify the index while adding new mac address */ - for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { - struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx]; - if (!vpath->is_open) { - /* This can happen when this interface is added/removed - to the bonding interface. Delete this station address - from the linked list */ - vxge_mac_list_del(vpath, &mac_info_old); - - /* Add this new address to the linked list - for later restoring */ - vxge_mac_list_add(vpath, &mac_info_new); - - continue; - } - /* Delete the station address */ - mac_info_old.vpath_no = vpath_idx; - status = vxge_del_mac_addr(vdev, &mac_info_old); - } - - if (unlikely(!is_vxge_card_up(vdev))) { - memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); - return VXGE_HW_OK; - } - - /* Set this mac address to all the vpaths */ - for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { - mac_info_new.vpath_no = vpath_idx; - mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE; - status = vxge_add_mac_addr(vdev, &mac_info_new); - if (status != VXGE_HW_OK) - return -EINVAL; - } - - memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); - - return status; -} - -/* - * vxge_vpath_intr_enable - * @vdev: pointer to vdev - * @vp_id: vpath for which to enable the interrupts - * - * Enables the interrupts for the vpath -*/ -static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id) -{ - struct vxge_vpath *vpath = &vdev->vpaths[vp_id]; - int msix_id = 0; - int tim_msix_id[4] = {0, 1, 0, 0}; - int alarm_msix_id = VXGE_ALARM_MSIX_ID; - - vxge_hw_vpath_intr_enable(vpath->handle); - - if (vdev->config.intr_type == INTA) - vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle); - else { - vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id, - alarm_msix_id); - - msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE; - vxge_hw_vpath_msix_unmask(vpath->handle, msix_id); - vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1); - - /* enable the alarm vector */ - msix_id = (vpath->handle->vpath->hldev->first_vp_id * - VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id; - vxge_hw_vpath_msix_unmask(vpath->handle, msix_id); - } -} - -/* - * vxge_vpath_intr_disable - * @vdev: pointer to vdev - * @vp_id: vpath for which to disable the interrupts - * - * Disables the interrupts for the vpath -*/ -static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id) -{ - struct vxge_vpath *vpath = &vdev->vpaths[vp_id]; - struct __vxge_hw_device *hldev; - int msix_id; - - hldev = pci_get_drvdata(vdev->pdev); - - vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id); - - vxge_hw_vpath_intr_disable(vpath->handle); - - if (vdev->config.intr_type == INTA) - vxge_hw_vpath_inta_mask_tx_rx(vpath->handle); - else { - msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE; - vxge_hw_vpath_msix_mask(vpath->handle, msix_id); - vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1); - - /* disable the alarm vector */ - msix_id = (vpath->handle->vpath->hldev->first_vp_id * - VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID; - vxge_hw_vpath_msix_mask(vpath->handle, msix_id); - } -} - -/* list all mac addresses from DA table */ -static enum vxge_hw_status -vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac) -{ - enum vxge_hw_status status = VXGE_HW_OK; - unsigned char macmask[ETH_ALEN]; - unsigned char macaddr[ETH_ALEN]; - - status = vxge_hw_vpath_mac_addr_get(vpath->handle, - macaddr, macmask); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "DA config list entry failed for vpath:%d", - vpath->device_id); - return status; - } - - while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) { - status = vxge_hw_vpath_mac_addr_get_next(vpath->handle, - macaddr, macmask); - if (status != VXGE_HW_OK) - break; - } - - return status; -} - -/* Store all mac addresses from the list to the DA table */ -static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath) -{ - enum vxge_hw_status status = VXGE_HW_OK; - struct macInfo mac_info; - u8 *mac_address = NULL; - struct list_head *entry, *next; - - memset(&mac_info, 0, sizeof(struct macInfo)); - - if (vpath->is_open) { - list_for_each_safe(entry, next, &vpath->mac_addr_list) { - mac_address = - (u8 *)& - ((struct vxge_mac_addrs *)entry)->macaddr; - memcpy(mac_info.macaddr, mac_address, ETH_ALEN); - ((struct vxge_mac_addrs *)entry)->state = - VXGE_LL_MAC_ADDR_IN_DA_TABLE; - /* does this mac address already exist in da table? */ - status = vxge_search_mac_addr_in_da_table(vpath, - &mac_info); - if (status != VXGE_HW_OK) { - /* Add this mac address to the DA table */ - status = vxge_hw_vpath_mac_addr_add( - vpath->handle, mac_info.macaddr, - mac_info.macmask, - VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "DA add entry failed for vpath:%d", - vpath->device_id); - ((struct vxge_mac_addrs *)entry)->state - = VXGE_LL_MAC_ADDR_IN_LIST; - } - } - } - } - - return status; -} - -/* Store all vlan ids from the list to the vid table */ -static enum vxge_hw_status -vxge_restore_vpath_vid_table(struct vxge_vpath *vpath) -{ - enum vxge_hw_status status = VXGE_HW_OK; - struct vxgedev *vdev = vpath->vdev; - u16 vid; - - if (!vpath->is_open) - return status; - - for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID) - status = vxge_hw_vpath_vid_add(vpath->handle, vid); - - return status; -} - -/* - * vxge_reset_vpath - * @vdev: pointer to vdev - * @vp_id: vpath to reset - * - * Resets the vpath -*/ -static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id) -{ - enum vxge_hw_status status = VXGE_HW_OK; - struct vxge_vpath *vpath = &vdev->vpaths[vp_id]; - int ret = 0; - - /* check if device is down already */ - if (unlikely(!is_vxge_card_up(vdev))) - return 0; - - /* is device reset already scheduled */ - if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) - return 0; - - if (vpath->handle) { - if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) { - if (is_vxge_card_up(vdev) && - vxge_hw_vpath_recover_from_reset(vpath->handle) - != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "vxge_hw_vpath_recover_from_reset" - "failed for vpath:%d", vp_id); - return status; - } - } else { - vxge_debug_init(VXGE_ERR, - "vxge_hw_vpath_reset failed for" - "vpath:%d", vp_id); - return status; - } - } else - return VXGE_HW_FAIL; - - vxge_restore_vpath_mac_addr(vpath); - vxge_restore_vpath_vid_table(vpath); - - /* Enable all broadcast */ - vxge_hw_vpath_bcast_enable(vpath->handle); - - /* Enable all multicast */ - if (vdev->all_multi_flg) { - status = vxge_hw_vpath_mcast_enable(vpath->handle); - if (status != VXGE_HW_OK) - vxge_debug_init(VXGE_ERR, - "%s:%d Enabling multicast failed", - __func__, __LINE__); - } - - /* Enable the interrupts */ - vxge_vpath_intr_enable(vdev, vp_id); - - smp_wmb(); - - /* Enable the flow of traffic through the vpath */ - vxge_hw_vpath_enable(vpath->handle); - - smp_wmb(); - vxge_hw_vpath_rx_doorbell_init(vpath->handle); - vpath->ring.last_status = VXGE_HW_OK; - - /* Vpath reset done */ - clear_bit(vp_id, &vdev->vp_reset); - - /* Start the vpath queue */ - if (netif_tx_queue_stopped(vpath->fifo.txq)) - netif_tx_wake_queue(vpath->fifo.txq); - - return ret; -} - -/* Configure CI */ -static void vxge_config_ci_for_tti_rti(struct vxgedev *vdev) -{ - int i = 0; - - /* Enable CI for RTI */ - if (vdev->config.intr_type == MSI_X) { - for (i = 0; i < vdev->no_of_vpath; i++) { - struct __vxge_hw_ring *hw_ring; - - hw_ring = vdev->vpaths[i].ring.handle; - vxge_hw_vpath_dynamic_rti_ci_set(hw_ring); - } - } - - /* Enable CI for TTI */ - for (i = 0; i < vdev->no_of_vpath; i++) { - struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle; - vxge_hw_vpath_tti_ci_set(hw_fifo); - /* - * For Inta (with or without napi), Set CI ON for only one - * vpath. (Have only one free running timer). - */ - if ((vdev->config.intr_type == INTA) && (i == 0)) - break; - } - - return; -} - -static int do_vxge_reset(struct vxgedev *vdev, int event) -{ - enum vxge_hw_status status; - int ret = 0, vp_id, i; - - vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); - - if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) { - /* check if device is down already */ - if (unlikely(!is_vxge_card_up(vdev))) - return 0; - - /* is reset already scheduled */ - if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) - return 0; - } - - if (event == VXGE_LL_FULL_RESET) { - netif_carrier_off(vdev->ndev); - - /* wait for all the vpath reset to complete */ - for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { - while (test_bit(vp_id, &vdev->vp_reset)) - msleep(50); - } - - netif_carrier_on(vdev->ndev); - - /* if execution mode is set to debug, don't reset the adapter */ - if (unlikely(vdev->exec_mode)) { - vxge_debug_init(VXGE_ERR, - "%s: execution mode is debug, returning..", - vdev->ndev->name); - clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); - netif_tx_stop_all_queues(vdev->ndev); - return 0; - } - } - - if (event == VXGE_LL_FULL_RESET) { - vxge_hw_device_wait_receive_idle(vdev->devh); - vxge_hw_device_intr_disable(vdev->devh); - - switch (vdev->cric_err_event) { - case VXGE_HW_EVENT_UNKNOWN: - netif_tx_stop_all_queues(vdev->ndev); - vxge_debug_init(VXGE_ERR, - "fatal: %s: Disabling device due to" - "unknown error", - vdev->ndev->name); - ret = -EPERM; - goto out; - case VXGE_HW_EVENT_RESET_START: - break; - case VXGE_HW_EVENT_RESET_COMPLETE: - case VXGE_HW_EVENT_LINK_DOWN: - case VXGE_HW_EVENT_LINK_UP: - case VXGE_HW_EVENT_ALARM_CLEARED: - case VXGE_HW_EVENT_ECCERR: - case VXGE_HW_EVENT_MRPCIM_ECCERR: - ret = -EPERM; - goto out; - case VXGE_HW_EVENT_FIFO_ERR: - case VXGE_HW_EVENT_VPATH_ERR: - break; - case VXGE_HW_EVENT_CRITICAL_ERR: - netif_tx_stop_all_queues(vdev->ndev); - vxge_debug_init(VXGE_ERR, - "fatal: %s: Disabling device due to" - "serious error", - vdev->ndev->name); - /* SOP or device reset required */ - /* This event is not currently used */ - ret = -EPERM; - goto out; - case VXGE_HW_EVENT_SERR: - netif_tx_stop_all_queues(vdev->ndev); - vxge_debug_init(VXGE_ERR, - "fatal: %s: Disabling device due to" - "serious error", - vdev->ndev->name); - ret = -EPERM; - goto out; - case VXGE_HW_EVENT_SRPCIM_SERR: - case VXGE_HW_EVENT_MRPCIM_SERR: - ret = -EPERM; - goto out; - case VXGE_HW_EVENT_SLOT_FREEZE: - netif_tx_stop_all_queues(vdev->ndev); - vxge_debug_init(VXGE_ERR, - "fatal: %s: Disabling device due to" - "slot freeze", - vdev->ndev->name); - ret = -EPERM; - goto out; - default: - break; - - } - } - - if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) - netif_tx_stop_all_queues(vdev->ndev); - - if (event == VXGE_LL_FULL_RESET) { - status = vxge_reset_all_vpaths(vdev); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "fatal: %s: can not reset vpaths", - vdev->ndev->name); - ret = -EPERM; - goto out; - } - } - - if (event == VXGE_LL_COMPL_RESET) { - for (i = 0; i < vdev->no_of_vpath; i++) - if (vdev->vpaths[i].handle) { - if (vxge_hw_vpath_recover_from_reset( - vdev->vpaths[i].handle) - != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "vxge_hw_vpath_recover_" - "from_reset failed for vpath: " - "%d", i); - ret = -EPERM; - goto out; - } - } else { - vxge_debug_init(VXGE_ERR, - "vxge_hw_vpath_reset failed for " - "vpath:%d", i); - ret = -EPERM; - goto out; - } - } - - if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) { - /* Reprogram the DA table with populated mac addresses */ - for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { - vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]); - vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]); - } - - /* enable vpath interrupts */ - for (i = 0; i < vdev->no_of_vpath; i++) - vxge_vpath_intr_enable(vdev, i); - - vxge_hw_device_intr_enable(vdev->devh); - - smp_wmb(); - - /* Indicate card up */ - set_bit(__VXGE_STATE_CARD_UP, &vdev->state); - - /* Get the traffic to flow through the vpaths */ - for (i = 0; i < vdev->no_of_vpath; i++) { - vxge_hw_vpath_enable(vdev->vpaths[i].handle); - smp_wmb(); - vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle); - } - - netif_tx_wake_all_queues(vdev->ndev); - } - - /* configure CI */ - vxge_config_ci_for_tti_rti(vdev); - -out: - vxge_debug_entryexit(VXGE_TRACE, - "%s:%d Exiting...", __func__, __LINE__); - - /* Indicate reset done */ - if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) - clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state); - return ret; -} - -/* - * vxge_reset - * @vdev: pointer to ll device - * - * driver may reset the chip on events of serr, eccerr, etc - */ -static void vxge_reset(struct work_struct *work) -{ - struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task); - - if (!netif_running(vdev->ndev)) - return; - - do_vxge_reset(vdev, VXGE_LL_FULL_RESET); -} - -/** - * vxge_poll - Receive handler when Receive Polling is used. - * @dev: pointer to the device structure. - * @budget: Number of packets budgeted to be processed in this iteration. - * - * This function comes into picture only if Receive side is being handled - * through polling (called NAPI in linux). It mostly does what the normal - * Rx interrupt handler does in terms of descriptor and packet processing - * but not in an interrupt context. Also it will process a specified number - * of packets at most in one iteration. This value is passed down by the - * kernel as the function argument 'budget'. - */ -static int vxge_poll_msix(struct napi_struct *napi, int budget) -{ - struct vxge_ring *ring = container_of(napi, struct vxge_ring, napi); - int pkts_processed; - int budget_org = budget; - - ring->budget = budget; - ring->pkts_processed = 0; - vxge_hw_vpath_poll_rx(ring->handle); - pkts_processed = ring->pkts_processed; - - if (ring->pkts_processed < budget_org) { - napi_complete(napi); - - /* Re enable the Rx interrupts for the vpath */ - vxge_hw_channel_msix_unmask( - (struct __vxge_hw_channel *)ring->handle, - ring->rx_vector_no); - mmiowb(); - } - - /* We are copying and returning the local variable, in case if after - * clearing the msix interrupt above, if the interrupt fires right - * away which can preempt this NAPI thread */ - return pkts_processed; -} - -static int vxge_poll_inta(struct napi_struct *napi, int budget) -{ - struct vxgedev *vdev = container_of(napi, struct vxgedev, napi); - int pkts_processed = 0; - int i; - int budget_org = budget; - struct vxge_ring *ring; - - struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev); - - for (i = 0; i < vdev->no_of_vpath; i++) { - ring = &vdev->vpaths[i].ring; - ring->budget = budget; - ring->pkts_processed = 0; - vxge_hw_vpath_poll_rx(ring->handle); - pkts_processed += ring->pkts_processed; - budget -= ring->pkts_processed; - if (budget <= 0) - break; - } - - VXGE_COMPLETE_ALL_TX(vdev); - - if (pkts_processed < budget_org) { - napi_complete(napi); - /* Re enable the Rx interrupts for the ring */ - vxge_hw_device_unmask_all(hldev); - vxge_hw_device_flush_io(hldev); - } - - return pkts_processed; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -/** - * vxge_netpoll - netpoll event handler entry point - * @dev : pointer to the device structure. - * Description: - * This function will be called by upper layer to check for events on the - * interface in situations where interrupts are disabled. It is used for - * specific in-kernel networking tasks, such as remote consoles and kernel - * debugging over the network (example netdump in RedHat). - */ -static void vxge_netpoll(struct net_device *dev) -{ - struct __vxge_hw_device *hldev; - struct vxgedev *vdev; - - vdev = netdev_priv(dev); - hldev = pci_get_drvdata(vdev->pdev); - - vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); - - if (pci_channel_offline(vdev->pdev)) - return; - - disable_irq(dev->irq); - vxge_hw_device_clear_tx_rx(hldev); - - vxge_hw_device_clear_tx_rx(hldev); - VXGE_COMPLETE_ALL_RX(vdev); - VXGE_COMPLETE_ALL_TX(vdev); - - enable_irq(dev->irq); - - vxge_debug_entryexit(VXGE_TRACE, - "%s:%d Exiting...", __func__, __LINE__); -} -#endif - -/* RTH configuration */ -static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev) -{ - enum vxge_hw_status status = VXGE_HW_OK; - struct vxge_hw_rth_hash_types hash_types; - u8 itable[256] = {0}; /* indirection table */ - u8 mtable[256] = {0}; /* CPU to vpath mapping */ - int index; - - /* - * Filling - * - itable with bucket numbers - * - mtable with bucket-to-vpath mapping - */ - for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) { - itable[index] = index; - mtable[index] = index % vdev->no_of_vpath; - } - - /* set indirection table, bucket-to-vpath mapping */ - status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles, - vdev->no_of_vpath, - mtable, itable, - vdev->config.rth_bkt_sz); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "RTH indirection table configuration failed " - "for vpath:%d", vdev->vpaths[0].device_id); - return status; - } - - /* Fill RTH hash types */ - hash_types.hash_type_tcpipv4_en = vdev->config.rth_hash_type_tcpipv4; - hash_types.hash_type_ipv4_en = vdev->config.rth_hash_type_ipv4; - hash_types.hash_type_tcpipv6_en = vdev->config.rth_hash_type_tcpipv6; - hash_types.hash_type_ipv6_en = vdev->config.rth_hash_type_ipv6; - hash_types.hash_type_tcpipv6ex_en = - vdev->config.rth_hash_type_tcpipv6ex; - hash_types.hash_type_ipv6ex_en = vdev->config.rth_hash_type_ipv6ex; - - /* - * Because the itable_set() method uses the active_table field - * for the target virtual path the RTH config should be updated - * for all VPATHs. The h/w only uses the lowest numbered VPATH - * when steering frames. - */ - for (index = 0; index < vdev->no_of_vpath; index++) { - status = vxge_hw_vpath_rts_rth_set( - vdev->vpaths[index].handle, - vdev->config.rth_algorithm, - &hash_types, - vdev->config.rth_bkt_sz); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "RTH configuration failed for vpath:%d", - vdev->vpaths[index].device_id); - return status; - } - } - - return status; -} - -/* reset vpaths */ -enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev) -{ - enum vxge_hw_status status = VXGE_HW_OK; - struct vxge_vpath *vpath; - int i; - - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - if (vpath->handle) { - if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) { - if (is_vxge_card_up(vdev) && - vxge_hw_vpath_recover_from_reset( - vpath->handle) != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "vxge_hw_vpath_recover_" - "from_reset failed for vpath: " - "%d", i); - return status; - } - } else { - vxge_debug_init(VXGE_ERR, - "vxge_hw_vpath_reset failed for " - "vpath:%d", i); - return status; - } - } - } - - return status; -} - -/* close vpaths */ -static void vxge_close_vpaths(struct vxgedev *vdev, int index) -{ - struct vxge_vpath *vpath; - int i; - - for (i = index; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - - if (vpath->handle && vpath->is_open) { - vxge_hw_vpath_close(vpath->handle); - vdev->stats.vpaths_open--; - } - vpath->is_open = 0; - vpath->handle = NULL; - } -} - -/* open vpaths */ -static int vxge_open_vpaths(struct vxgedev *vdev) -{ - struct vxge_hw_vpath_attr attr; - enum vxge_hw_status status; - struct vxge_vpath *vpath; - u32 vp_id = 0; - int i; - - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - vxge_assert(vpath->is_configured); - - if (!vdev->titan1) { - struct vxge_hw_vp_config *vcfg; - vcfg = &vdev->devh->config.vp_config[vpath->device_id]; - - vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A; - vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B; - vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C; - vcfg->tti.uec_a = TTI_T1A_TX_UFC_A; - vcfg->tti.uec_b = TTI_T1A_TX_UFC_B; - vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu); - vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu); - vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL; - vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL; - } - - attr.vp_id = vpath->device_id; - attr.fifo_attr.callback = vxge_xmit_compl; - attr.fifo_attr.txdl_term = vxge_tx_term; - attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv); - attr.fifo_attr.userdata = &vpath->fifo; - - attr.ring_attr.callback = vxge_rx_1b_compl; - attr.ring_attr.rxd_init = vxge_rx_initial_replenish; - attr.ring_attr.rxd_term = vxge_rx_term; - attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv); - attr.ring_attr.userdata = &vpath->ring; - - vpath->ring.ndev = vdev->ndev; - vpath->ring.pdev = vdev->pdev; - - status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle); - if (status == VXGE_HW_OK) { - vpath->fifo.handle = - (struct __vxge_hw_fifo *)attr.fifo_attr.userdata; - vpath->ring.handle = - (struct __vxge_hw_ring *)attr.ring_attr.userdata; - vpath->fifo.tx_steering_type = - vdev->config.tx_steering_type; - vpath->fifo.ndev = vdev->ndev; - vpath->fifo.pdev = vdev->pdev; - if (vdev->config.tx_steering_type) - vpath->fifo.txq = - netdev_get_tx_queue(vdev->ndev, i); - else - vpath->fifo.txq = - netdev_get_tx_queue(vdev->ndev, 0); - vpath->fifo.indicate_max_pkts = - vdev->config.fifo_indicate_max_pkts; - vpath->fifo.tx_vector_no = 0; - vpath->ring.rx_vector_no = 0; - vpath->ring.rx_hwts = vdev->rx_hwts; - vpath->is_open = 1; - vdev->vp_handles[i] = vpath->handle; - vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip; - vdev->stats.vpaths_open++; - } else { - vdev->stats.vpath_open_fail++; - vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to " - "open with status: %d", - vdev->ndev->name, vpath->device_id, - status); - vxge_close_vpaths(vdev, 0); - return -EPERM; - } - - vp_id = vpath->handle->vpath->vp_id; - vdev->vpaths_deployed |= vxge_mBIT(vp_id); - } - - return VXGE_HW_OK; -} - -/** - * adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing - * if the interrupts are not within a range - * @fifo: pointer to transmit fifo structure - * Description: The function changes boundary timer and restriction timer - * value depends on the traffic - * Return Value: None - */ -static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo) -{ - fifo->interrupt_count++; - if (jiffies > fifo->jiffies + HZ / 100) { - struct __vxge_hw_fifo *hw_fifo = fifo->handle; - - fifo->jiffies = jiffies; - if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT && - hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) { - hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL; - vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo); - } else if (hw_fifo->rtimer != 0) { - hw_fifo->rtimer = 0; - vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo); - } - fifo->interrupt_count = 0; - } -} - -/** - * adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing - * if the interrupts are not within a range - * @ring: pointer to receive ring structure - * Description: The function increases of decreases the packet counts within - * the ranges of traffic utilization, if the interrupts due to this ring are - * not within a fixed range. - * Return Value: Nothing - */ -static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring) -{ - ring->interrupt_count++; - if (jiffies > ring->jiffies + HZ / 100) { - struct __vxge_hw_ring *hw_ring = ring->handle; - - ring->jiffies = jiffies; - if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT && - hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) { - hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL; - vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring); - } else if (hw_ring->rtimer != 0) { - hw_ring->rtimer = 0; - vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring); - } - ring->interrupt_count = 0; - } -} - -/* - * vxge_isr_napi - * @irq: the irq of the device. - * @dev_id: a void pointer to the hldev structure of the Titan device - * @ptregs: pointer to the registers pushed on the stack. - * - * This function is the ISR handler of the device when napi is enabled. It - * identifies the reason for the interrupt and calls the relevant service - * routines. - */ -static irqreturn_t vxge_isr_napi(int irq, void *dev_id) -{ - struct net_device *dev; - struct __vxge_hw_device *hldev; - u64 reason; - enum vxge_hw_status status; - struct vxgedev *vdev = (struct vxgedev *)dev_id; - - vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__); - - dev = vdev->ndev; - hldev = pci_get_drvdata(vdev->pdev); - - if (pci_channel_offline(vdev->pdev)) - return IRQ_NONE; - - if (unlikely(!is_vxge_card_up(vdev))) - return IRQ_HANDLED; - - status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason); - if (status == VXGE_HW_OK) { - vxge_hw_device_mask_all(hldev); - - if (reason & - VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT( - vdev->vpaths_deployed >> - (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) { - - vxge_hw_device_clear_tx_rx(hldev); - napi_schedule(&vdev->napi); - vxge_debug_intr(VXGE_TRACE, - "%s:%d Exiting...", __func__, __LINE__); - return IRQ_HANDLED; - } else - vxge_hw_device_unmask_all(hldev); - } else if (unlikely((status == VXGE_HW_ERR_VPATH) || - (status == VXGE_HW_ERR_CRITICAL) || - (status == VXGE_HW_ERR_FIFO))) { - vxge_hw_device_mask_all(hldev); - vxge_hw_device_flush_io(hldev); - return IRQ_HANDLED; - } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE)) - return IRQ_HANDLED; - - vxge_debug_intr(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__); - return IRQ_NONE; -} - -#ifdef CONFIG_PCI_MSI - -static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id) -{ - struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id; - - adaptive_coalesce_tx_interrupts(fifo); - - vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle, - fifo->tx_vector_no); - - vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle, - fifo->tx_vector_no); - - VXGE_COMPLETE_VPATH_TX(fifo); - - vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle, - fifo->tx_vector_no); - - mmiowb(); - - return IRQ_HANDLED; -} - -static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id) -{ - struct vxge_ring *ring = (struct vxge_ring *)dev_id; - - adaptive_coalesce_rx_interrupts(ring); - - vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle, - ring->rx_vector_no); - - vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle, - ring->rx_vector_no); - - napi_schedule(&ring->napi); - return IRQ_HANDLED; -} - -static irqreturn_t -vxge_alarm_msix_handle(int irq, void *dev_id) -{ - int i; - enum vxge_hw_status status; - struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id; - struct vxgedev *vdev = vpath->vdev; - int msix_id = (vpath->handle->vpath->vp_id * - VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID; - - for (i = 0; i < vdev->no_of_vpath; i++) { - /* Reduce the chance of losing alarm interrupts by masking - * the vector. A pending bit will be set if an alarm is - * generated and on unmask the interrupt will be fired. - */ - vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id); - vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id); - mmiowb(); - - status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle, - vdev->exec_mode); - if (status == VXGE_HW_OK) { - vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle, - msix_id); - mmiowb(); - continue; - } - vxge_debug_intr(VXGE_ERR, - "%s: vxge_hw_vpath_alarm_process failed %x ", - VXGE_DRIVER_NAME, status); - } - return IRQ_HANDLED; -} - -static int vxge_alloc_msix(struct vxgedev *vdev) -{ - int j, i, ret = 0; - int msix_intr_vect = 0, temp; - vdev->intr_cnt = 0; - -start: - /* Tx/Rx MSIX Vectors count */ - vdev->intr_cnt = vdev->no_of_vpath * 2; - - /* Alarm MSIX Vectors count */ - vdev->intr_cnt++; - - vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry), - GFP_KERNEL); - if (!vdev->entries) { - vxge_debug_init(VXGE_ERR, - "%s: memory allocation failed", - VXGE_DRIVER_NAME); - ret = -ENOMEM; - goto alloc_entries_failed; - } - - vdev->vxge_entries = kcalloc(vdev->intr_cnt, - sizeof(struct vxge_msix_entry), - GFP_KERNEL); - if (!vdev->vxge_entries) { - vxge_debug_init(VXGE_ERR, "%s: memory allocation failed", - VXGE_DRIVER_NAME); - ret = -ENOMEM; - goto alloc_vxge_entries_failed; - } - - for (i = 0, j = 0; i < vdev->no_of_vpath; i++) { - - msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE; - - /* Initialize the fifo vector */ - vdev->entries[j].entry = msix_intr_vect; - vdev->vxge_entries[j].entry = msix_intr_vect; - vdev->vxge_entries[j].in_use = 0; - j++; - - /* Initialize the ring vector */ - vdev->entries[j].entry = msix_intr_vect + 1; - vdev->vxge_entries[j].entry = msix_intr_vect + 1; - vdev->vxge_entries[j].in_use = 0; - j++; - } - - /* Initialize the alarm vector */ - vdev->entries[j].entry = VXGE_ALARM_MSIX_ID; - vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID; - vdev->vxge_entries[j].in_use = 0; - - ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt); - if (ret > 0) { - vxge_debug_init(VXGE_ERR, - "%s: MSI-X enable failed for %d vectors, ret: %d", - VXGE_DRIVER_NAME, vdev->intr_cnt, ret); - if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) { - ret = -ENODEV; - goto enable_msix_failed; - } - - kfree(vdev->entries); - kfree(vdev->vxge_entries); - vdev->entries = NULL; - vdev->vxge_entries = NULL; - /* Try with less no of vector by reducing no of vpaths count */ - temp = (ret - 1)/2; - vxge_close_vpaths(vdev, temp); - vdev->no_of_vpath = temp; - goto start; - } else if (ret < 0) { - ret = -ENODEV; - goto enable_msix_failed; - } - return 0; - -enable_msix_failed: - kfree(vdev->vxge_entries); -alloc_vxge_entries_failed: - kfree(vdev->entries); -alloc_entries_failed: - return ret; -} - -static int vxge_enable_msix(struct vxgedev *vdev) -{ - - int i, ret = 0; - /* 0 - Tx, 1 - Rx */ - int tim_msix_id[4] = {0, 1, 0, 0}; - - vdev->intr_cnt = 0; - - /* allocate msix vectors */ - ret = vxge_alloc_msix(vdev); - if (!ret) { - for (i = 0; i < vdev->no_of_vpath; i++) { - struct vxge_vpath *vpath = &vdev->vpaths[i]; - - /* If fifo or ring are not enabled, the MSIX vector for - * it should be set to 0. - */ - vpath->ring.rx_vector_no = (vpath->device_id * - VXGE_HW_VPATH_MSIX_ACTIVE) + 1; - - vpath->fifo.tx_vector_no = (vpath->device_id * - VXGE_HW_VPATH_MSIX_ACTIVE); - - vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id, - VXGE_ALARM_MSIX_ID); - } - } - - return ret; -} - -static void vxge_rem_msix_isr(struct vxgedev *vdev) -{ - int intr_cnt; - - for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1); - intr_cnt++) { - if (vdev->vxge_entries[intr_cnt].in_use) { - synchronize_irq(vdev->entries[intr_cnt].vector); - free_irq(vdev->entries[intr_cnt].vector, - vdev->vxge_entries[intr_cnt].arg); - vdev->vxge_entries[intr_cnt].in_use = 0; - } - } - - kfree(vdev->entries); - kfree(vdev->vxge_entries); - vdev->entries = NULL; - vdev->vxge_entries = NULL; - - if (vdev->config.intr_type == MSI_X) - pci_disable_msix(vdev->pdev); -} -#endif - -static void vxge_rem_isr(struct vxgedev *vdev) -{ - struct __vxge_hw_device *hldev; - hldev = pci_get_drvdata(vdev->pdev); - -#ifdef CONFIG_PCI_MSI - if (vdev->config.intr_type == MSI_X) { - vxge_rem_msix_isr(vdev); - } else -#endif - if (vdev->config.intr_type == INTA) { - synchronize_irq(vdev->pdev->irq); - free_irq(vdev->pdev->irq, vdev); - } -} - -static int vxge_add_isr(struct vxgedev *vdev) -{ - int ret = 0; -#ifdef CONFIG_PCI_MSI - int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0; - int pci_fun = PCI_FUNC(vdev->pdev->devfn); - - if (vdev->config.intr_type == MSI_X) - ret = vxge_enable_msix(vdev); - - if (ret) { - vxge_debug_init(VXGE_ERR, - "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME); - vxge_debug_init(VXGE_ERR, - "%s: Defaulting to INTA", VXGE_DRIVER_NAME); - vdev->config.intr_type = INTA; - } - - if (vdev->config.intr_type == MSI_X) { - for (intr_idx = 0; - intr_idx < (vdev->no_of_vpath * - VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) { - - msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE; - irq_req = 0; - - switch (msix_idx) { - case 0: - snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN, - "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d", - vdev->ndev->name, - vdev->entries[intr_cnt].entry, - pci_fun, vp_idx); - ret = request_irq( - vdev->entries[intr_cnt].vector, - vxge_tx_msix_handle, 0, - vdev->desc[intr_cnt], - &vdev->vpaths[vp_idx].fifo); - vdev->vxge_entries[intr_cnt].arg = - &vdev->vpaths[vp_idx].fifo; - irq_req = 1; - break; - case 1: - snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN, - "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d", - vdev->ndev->name, - vdev->entries[intr_cnt].entry, - pci_fun, vp_idx); - ret = request_irq( - vdev->entries[intr_cnt].vector, - vxge_rx_msix_napi_handle, - 0, - vdev->desc[intr_cnt], - &vdev->vpaths[vp_idx].ring); - vdev->vxge_entries[intr_cnt].arg = - &vdev->vpaths[vp_idx].ring; - irq_req = 1; - break; - } - - if (ret) { - vxge_debug_init(VXGE_ERR, - "%s: MSIX - %d Registration failed", - vdev->ndev->name, intr_cnt); - vxge_rem_msix_isr(vdev); - vdev->config.intr_type = INTA; - vxge_debug_init(VXGE_ERR, - "%s: Defaulting to INTA" - , vdev->ndev->name); - goto INTA_MODE; - } - - if (irq_req) { - /* We requested for this msix interrupt */ - vdev->vxge_entries[intr_cnt].in_use = 1; - msix_idx += vdev->vpaths[vp_idx].device_id * - VXGE_HW_VPATH_MSIX_ACTIVE; - vxge_hw_vpath_msix_unmask( - vdev->vpaths[vp_idx].handle, - msix_idx); - intr_cnt++; - } - - /* Point to next vpath handler */ - if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) && - (vp_idx < (vdev->no_of_vpath - 1))) - vp_idx++; - } - - intr_cnt = vdev->no_of_vpath * 2; - snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN, - "%s:vxge:MSI-X %d - Alarm - fn:%d", - vdev->ndev->name, - vdev->entries[intr_cnt].entry, - pci_fun); - /* For Alarm interrupts */ - ret = request_irq(vdev->entries[intr_cnt].vector, - vxge_alarm_msix_handle, 0, - vdev->desc[intr_cnt], - &vdev->vpaths[0]); - if (ret) { - vxge_debug_init(VXGE_ERR, - "%s: MSIX - %d Registration failed", - vdev->ndev->name, intr_cnt); - vxge_rem_msix_isr(vdev); - vdev->config.intr_type = INTA; - vxge_debug_init(VXGE_ERR, - "%s: Defaulting to INTA", - vdev->ndev->name); - goto INTA_MODE; - } - - msix_idx = (vdev->vpaths[0].handle->vpath->vp_id * - VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID; - vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle, - msix_idx); - vdev->vxge_entries[intr_cnt].in_use = 1; - vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0]; - } -INTA_MODE: -#endif - - if (vdev->config.intr_type == INTA) { - snprintf(vdev->desc[0], VXGE_INTR_STRLEN, - "%s:vxge:INTA", vdev->ndev->name); - vxge_hw_device_set_intr_type(vdev->devh, - VXGE_HW_INTR_MODE_IRQLINE); - - vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle); - - ret = request_irq((int) vdev->pdev->irq, - vxge_isr_napi, - IRQF_SHARED, vdev->desc[0], vdev); - if (ret) { - vxge_debug_init(VXGE_ERR, - "%s %s-%d: ISR registration failed", - VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq); - return -ENODEV; - } - vxge_debug_init(VXGE_TRACE, - "new %s-%d line allocated", - "IRQ", vdev->pdev->irq); - } - - return VXGE_HW_OK; -} - -static void vxge_poll_vp_reset(unsigned long data) -{ - struct vxgedev *vdev = (struct vxgedev *)data; - int i, j = 0; - - for (i = 0; i < vdev->no_of_vpath; i++) { - if (test_bit(i, &vdev->vp_reset)) { - vxge_reset_vpath(vdev, i); - j++; - } - } - if (j && (vdev->config.intr_type != MSI_X)) { - vxge_hw_device_unmask_all(vdev->devh); - vxge_hw_device_flush_io(vdev->devh); - } - - mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2); -} - -static void vxge_poll_vp_lockup(unsigned long data) -{ - struct vxgedev *vdev = (struct vxgedev *)data; - enum vxge_hw_status status = VXGE_HW_OK; - struct vxge_vpath *vpath; - struct vxge_ring *ring; - int i; - unsigned long rx_frms; - - for (i = 0; i < vdev->no_of_vpath; i++) { - ring = &vdev->vpaths[i].ring; - - /* Truncated to machine word size number of frames */ - rx_frms = ACCESS_ONCE(ring->stats.rx_frms); - - /* Did this vpath received any packets */ - if (ring->stats.prev_rx_frms == rx_frms) { - status = vxge_hw_vpath_check_leak(ring->handle); - - /* Did it received any packets last time */ - if ((VXGE_HW_FAIL == status) && - (VXGE_HW_FAIL == ring->last_status)) { - - /* schedule vpath reset */ - if (!test_and_set_bit(i, &vdev->vp_reset)) { - vpath = &vdev->vpaths[i]; - - /* disable interrupts for this vpath */ - vxge_vpath_intr_disable(vdev, i); - - /* stop the queue for this vpath */ - netif_tx_stop_queue(vpath->fifo.txq); - continue; - } - } - } - ring->stats.prev_rx_frms = rx_frms; - ring->last_status = status; - } - - /* Check every 1 milli second */ - mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000); -} - -static u32 vxge_fix_features(struct net_device *dev, u32 features) -{ - u32 changed = dev->features ^ features; - - /* Enabling RTH requires some of the logic in vxge_device_register and a - * vpath reset. Due to these restrictions, only allow modification - * while the interface is down. - */ - if ((changed & NETIF_F_RXHASH) && netif_running(dev)) - features ^= NETIF_F_RXHASH; - - return features; -} - -static int vxge_set_features(struct net_device *dev, u32 features) -{ - struct vxgedev *vdev = netdev_priv(dev); - u32 changed = dev->features ^ features; - - if (!(changed & NETIF_F_RXHASH)) - return 0; - - /* !netif_running() ensured by vxge_fix_features() */ - - vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH); - if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) { - dev->features = features ^ NETIF_F_RXHASH; - vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH); - return -EIO; - } - - return 0; -} - -/** - * vxge_open - * @dev: pointer to the device structure. - * - * This function is the open entry point of the driver. It mainly calls a - * function to allocate Rx buffers and inserts them into the buffer - * descriptors and then enables the Rx part of the NIC. - * Return value: '0' on success and an appropriate (-)ve integer as - * defined in errno.h file on failure. - */ -static int vxge_open(struct net_device *dev) -{ - enum vxge_hw_status status; - struct vxgedev *vdev; - struct __vxge_hw_device *hldev; - struct vxge_vpath *vpath; - int ret = 0; - int i; - u64 val64, function_mode; - - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d", dev->name, __func__, __LINE__); - - vdev = netdev_priv(dev); - hldev = pci_get_drvdata(vdev->pdev); - function_mode = vdev->config.device_hw_info.function_mode; - - /* make sure you have link off by default every time Nic is - * initialized */ - netif_carrier_off(dev); - - /* Open VPATHs */ - status = vxge_open_vpaths(vdev); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "%s: fatal: Vpath open failed", vdev->ndev->name); - ret = -EPERM; - goto out0; - } - - vdev->mtu = dev->mtu; - - status = vxge_add_isr(vdev); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "%s: fatal: ISR add failed", dev->name); - ret = -EPERM; - goto out1; - } - - if (vdev->config.intr_type != MSI_X) { - netif_napi_add(dev, &vdev->napi, vxge_poll_inta, - vdev->config.napi_weight); - napi_enable(&vdev->napi); - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - vpath->ring.napi_p = &vdev->napi; - } - } else { - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - netif_napi_add(dev, &vpath->ring.napi, - vxge_poll_msix, vdev->config.napi_weight); - napi_enable(&vpath->ring.napi); - vpath->ring.napi_p = &vpath->ring.napi; - } - } - - /* configure RTH */ - if (vdev->config.rth_steering) { - status = vxge_rth_configure(vdev); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "%s: fatal: RTH configuration failed", - dev->name); - ret = -EPERM; - goto out2; - } - } - printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name, - hldev->config.rth_en ? "enabled" : "disabled"); - - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - - /* set initial mtu before enabling the device */ - status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "%s: fatal: can not set new MTU", dev->name); - ret = -EPERM; - goto out2; - } - } - - VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev); - vxge_debug_init(vdev->level_trace, - "%s: MTU is %d", vdev->ndev->name, vdev->mtu); - VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev); - - /* Restore the DA, VID table and also multicast and promiscuous mode - * states - */ - if (vdev->all_multi_flg) { - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - vxge_restore_vpath_mac_addr(vpath); - vxge_restore_vpath_vid_table(vpath); - - status = vxge_hw_vpath_mcast_enable(vpath->handle); - if (status != VXGE_HW_OK) - vxge_debug_init(VXGE_ERR, - "%s:%d Enabling multicast failed", - __func__, __LINE__); - } - } - - /* Enable vpath to sniff all unicast/multicast traffic that not - * addressed to them. We allow promiscuous mode for PF only - */ - - val64 = 0; - for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) - val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i); - - vxge_hw_mgmt_reg_write(vdev->devh, - vxge_hw_mgmt_reg_type_mrpcim, - 0, - (ulong)offsetof(struct vxge_hw_mrpcim_reg, - rxmac_authorize_all_addr), - val64); - - vxge_hw_mgmt_reg_write(vdev->devh, - vxge_hw_mgmt_reg_type_mrpcim, - 0, - (ulong)offsetof(struct vxge_hw_mrpcim_reg, - rxmac_authorize_all_vid), - val64); - - vxge_set_multicast(dev); - - /* Enabling Bcast and mcast for all vpath */ - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - status = vxge_hw_vpath_bcast_enable(vpath->handle); - if (status != VXGE_HW_OK) - vxge_debug_init(VXGE_ERR, - "%s : Can not enable bcast for vpath " - "id %d", dev->name, i); - if (vdev->config.addr_learn_en) { - status = vxge_hw_vpath_mcast_enable(vpath->handle); - if (status != VXGE_HW_OK) - vxge_debug_init(VXGE_ERR, - "%s : Can not enable mcast for vpath " - "id %d", dev->name, i); - } - } - - vxge_hw_device_setpause_data(vdev->devh, 0, - vdev->config.tx_pause_enable, - vdev->config.rx_pause_enable); - - if (vdev->vp_reset_timer.function == NULL) - vxge_os_timer(vdev->vp_reset_timer, - vxge_poll_vp_reset, vdev, (HZ/2)); - - /* There is no need to check for RxD leak and RxD lookup on Titan1A */ - if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL) - vxge_os_timer(vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev, - HZ / 2); - - set_bit(__VXGE_STATE_CARD_UP, &vdev->state); - - smp_wmb(); - - if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) { - netif_carrier_on(vdev->ndev); - netdev_notice(vdev->ndev, "Link Up\n"); - vdev->stats.link_up++; - } - - vxge_hw_device_intr_enable(vdev->devh); - - smp_wmb(); - - for (i = 0; i < vdev->no_of_vpath; i++) { - vpath = &vdev->vpaths[i]; - - vxge_hw_vpath_enable(vpath->handle); - smp_wmb(); - vxge_hw_vpath_rx_doorbell_init(vpath->handle); - } - - netif_tx_start_all_queues(vdev->ndev); - - /* configure CI */ - vxge_config_ci_for_tti_rti(vdev); - - goto out0; - -out2: - vxge_rem_isr(vdev); - - /* Disable napi */ - if (vdev->config.intr_type != MSI_X) - napi_disable(&vdev->napi); - else { - for (i = 0; i < vdev->no_of_vpath; i++) - napi_disable(&vdev->vpaths[i].ring.napi); - } - -out1: - vxge_close_vpaths(vdev, 0); -out0: - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d Exiting...", - dev->name, __func__, __LINE__); - return ret; -} - -/* Loop through the mac address list and delete all the entries */ -static void vxge_free_mac_add_list(struct vxge_vpath *vpath) -{ - - struct list_head *entry, *next; - if (list_empty(&vpath->mac_addr_list)) - return; - - list_for_each_safe(entry, next, &vpath->mac_addr_list) { - list_del(entry); - kfree((struct vxge_mac_addrs *)entry); - } -} - -static void vxge_napi_del_all(struct vxgedev *vdev) -{ - int i; - if (vdev->config.intr_type != MSI_X) - netif_napi_del(&vdev->napi); - else { - for (i = 0; i < vdev->no_of_vpath; i++) - netif_napi_del(&vdev->vpaths[i].ring.napi); - } -} - -static int do_vxge_close(struct net_device *dev, int do_io) -{ - enum vxge_hw_status status; - struct vxgedev *vdev; - struct __vxge_hw_device *hldev; - int i; - u64 val64, vpath_vector; - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", - dev->name, __func__, __LINE__); - - vdev = netdev_priv(dev); - hldev = pci_get_drvdata(vdev->pdev); - - if (unlikely(!is_vxge_card_up(vdev))) - return 0; - - /* If vxge_handle_crit_err task is executing, - * wait till it completes. */ - while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) - msleep(50); - - if (do_io) { - /* Put the vpath back in normal mode */ - vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id); - status = vxge_hw_mgmt_reg_read(vdev->devh, - vxge_hw_mgmt_reg_type_mrpcim, - 0, - (ulong)offsetof( - struct vxge_hw_mrpcim_reg, - rts_mgr_cbasin_cfg), - &val64); - if (status == VXGE_HW_OK) { - val64 &= ~vpath_vector; - status = vxge_hw_mgmt_reg_write(vdev->devh, - vxge_hw_mgmt_reg_type_mrpcim, - 0, - (ulong)offsetof( - struct vxge_hw_mrpcim_reg, - rts_mgr_cbasin_cfg), - val64); - } - - /* Remove the function 0 from promiscuous mode */ - vxge_hw_mgmt_reg_write(vdev->devh, - vxge_hw_mgmt_reg_type_mrpcim, - 0, - (ulong)offsetof(struct vxge_hw_mrpcim_reg, - rxmac_authorize_all_addr), - 0); - - vxge_hw_mgmt_reg_write(vdev->devh, - vxge_hw_mgmt_reg_type_mrpcim, - 0, - (ulong)offsetof(struct vxge_hw_mrpcim_reg, - rxmac_authorize_all_vid), - 0); - - smp_wmb(); - } - - if (vdev->titan1) - del_timer_sync(&vdev->vp_lockup_timer); - - del_timer_sync(&vdev->vp_reset_timer); - - if (do_io) - vxge_hw_device_wait_receive_idle(hldev); - - clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); - - /* Disable napi */ - if (vdev->config.intr_type != MSI_X) - napi_disable(&vdev->napi); - else { - for (i = 0; i < vdev->no_of_vpath; i++) - napi_disable(&vdev->vpaths[i].ring.napi); - } - - netif_carrier_off(vdev->ndev); - netdev_notice(vdev->ndev, "Link Down\n"); - netif_tx_stop_all_queues(vdev->ndev); - - /* Note that at this point xmit() is stopped by upper layer */ - if (do_io) - vxge_hw_device_intr_disable(vdev->devh); - - vxge_rem_isr(vdev); - - vxge_napi_del_all(vdev); - - if (do_io) - vxge_reset_all_vpaths(vdev); - - vxge_close_vpaths(vdev, 0); - - vxge_debug_entryexit(VXGE_TRACE, - "%s: %s:%d Exiting...", dev->name, __func__, __LINE__); - - clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state); - - return 0; -} - -/** - * vxge_close - * @dev: device pointer. - * - * This is the stop entry point of the driver. It needs to undo exactly - * whatever was done by the open entry point, thus it's usually referred to - * as the close function.Among other things this function mainly stops the - * Rx side of the NIC and frees all the Rx buffers in the Rx rings. - * Return value: '0' on success and an appropriate (-)ve integer as - * defined in errno.h file on failure. - */ -static int vxge_close(struct net_device *dev) -{ - do_vxge_close(dev, 1); - return 0; -} - -/** - * vxge_change_mtu - * @dev: net device pointer. - * @new_mtu :the new MTU size for the device. - * - * A driver entry point to change MTU size for the device. Before changing - * the MTU the device must be stopped. - */ -static int vxge_change_mtu(struct net_device *dev, int new_mtu) -{ - struct vxgedev *vdev = netdev_priv(dev); - - vxge_debug_entryexit(vdev->level_trace, - "%s:%d", __func__, __LINE__); - if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) { - vxge_debug_init(vdev->level_err, - "%s: mtu size is invalid", dev->name); - return -EPERM; - } - - /* check if device is down already */ - if (unlikely(!is_vxge_card_up(vdev))) { - /* just store new value, will use later on open() */ - dev->mtu = new_mtu; - vxge_debug_init(vdev->level_err, - "%s", "device is down on MTU change"); - return 0; - } - - vxge_debug_init(vdev->level_trace, - "trying to apply new MTU %d", new_mtu); - - if (vxge_close(dev)) - return -EIO; - - dev->mtu = new_mtu; - vdev->mtu = new_mtu; - - if (vxge_open(dev)) - return -EIO; - - vxge_debug_init(vdev->level_trace, - "%s: MTU changed to %d", vdev->ndev->name, new_mtu); - - vxge_debug_entryexit(vdev->level_trace, - "%s:%d Exiting...", __func__, __LINE__); - - return 0; -} - -/** - * vxge_get_stats64 - * @dev: pointer to the device structure - * @stats: pointer to struct rtnl_link_stats64 - * - */ -static struct rtnl_link_stats64 * -vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats) -{ - struct vxgedev *vdev = netdev_priv(dev); - int k; - - /* net_stats already zeroed by caller */ - for (k = 0; k < vdev->no_of_vpath; k++) { - struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats; - struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats; - unsigned int start; - u64 packets, bytes, multicast; - - do { - start = u64_stats_fetch_begin(&rxstats->syncp); - - packets = rxstats->rx_frms; - multicast = rxstats->rx_mcast; - bytes = rxstats->rx_bytes; - } while (u64_stats_fetch_retry(&rxstats->syncp, start)); - - net_stats->rx_packets += packets; - net_stats->rx_bytes += bytes; - net_stats->multicast += multicast; - - net_stats->rx_errors += rxstats->rx_errors; - net_stats->rx_dropped += rxstats->rx_dropped; - - do { - start = u64_stats_fetch_begin(&txstats->syncp); - - packets = txstats->tx_frms; - bytes = txstats->tx_bytes; - } while (u64_stats_fetch_retry(&txstats->syncp, start)); - - net_stats->tx_packets += packets; - net_stats->tx_bytes += bytes; - net_stats->tx_errors += txstats->tx_errors; - } - - return net_stats; -} - -static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh) -{ - enum vxge_hw_status status; - u64 val64; - - /* Timestamp is passed to the driver via the FCS, therefore we - * must disable the FCS stripping by the adapter. Since this is - * required for the driver to load (due to a hardware bug), - * there is no need to do anything special here. - */ - val64 = VXGE_HW_XMAC_TIMESTAMP_EN | - VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) | - VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0); - - status = vxge_hw_mgmt_reg_write(devh, - vxge_hw_mgmt_reg_type_mrpcim, - 0, - offsetof(struct vxge_hw_mrpcim_reg, - xmac_timestamp), - val64); - vxge_hw_device_flush_io(devh); - devh->config.hwts_en = VXGE_HW_HWTS_ENABLE; - return status; -} - -static int vxge_hwtstamp_ioctl(struct vxgedev *vdev, void __user *data) -{ - struct hwtstamp_config config; - int i; - - if (copy_from_user(&config, data, sizeof(config))) - return -EFAULT; - - /* reserved for future extensions */ - if (config.flags) - return -EINVAL; - - /* Transmit HW Timestamp not supported */ - switch (config.tx_type) { - case HWTSTAMP_TX_OFF: - break; - case HWTSTAMP_TX_ON: - default: - return -ERANGE; - } - - switch (config.rx_filter) { - case HWTSTAMP_FILTER_NONE: - vdev->rx_hwts = 0; - config.rx_filter = HWTSTAMP_FILTER_NONE; - break; - - case HWTSTAMP_FILTER_ALL: - case HWTSTAMP_FILTER_SOME: - case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: - case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: - case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: - case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: - case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: - case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: - case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: - case HWTSTAMP_FILTER_PTP_V2_EVENT: - case HWTSTAMP_FILTER_PTP_V2_SYNC: - case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: - if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE) - return -EFAULT; - - vdev->rx_hwts = 1; - config.rx_filter = HWTSTAMP_FILTER_ALL; - break; - - default: - return -ERANGE; - } - - for (i = 0; i < vdev->no_of_vpath; i++) - vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts; - - if (copy_to_user(data, &config, sizeof(config))) - return -EFAULT; - - return 0; -} - -/** - * vxge_ioctl - * @dev: Device pointer. - * @ifr: An IOCTL specific structure, that can contain a pointer to - * a proprietary structure used to pass information to the driver. - * @cmd: This is used to distinguish between the different commands that - * can be passed to the IOCTL functions. - * - * Entry point for the Ioctl. - */ -static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct vxgedev *vdev = netdev_priv(dev); - int ret; - - switch (cmd) { - case SIOCSHWTSTAMP: - ret = vxge_hwtstamp_ioctl(vdev, rq->ifr_data); - if (ret) - return ret; - break; - default: - return -EOPNOTSUPP; - } - - return 0; -} - -/** - * vxge_tx_watchdog - * @dev: pointer to net device structure - * - * Watchdog for transmit side. - * This function is triggered if the Tx Queue is stopped - * for a pre-defined amount of time when the Interface is still up. - */ -static void vxge_tx_watchdog(struct net_device *dev) -{ - struct vxgedev *vdev; - - vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); - - vdev = netdev_priv(dev); - - vdev->cric_err_event = VXGE_HW_EVENT_RESET_START; - - schedule_work(&vdev->reset_task); - vxge_debug_entryexit(VXGE_TRACE, - "%s:%d Exiting...", __func__, __LINE__); -} - -/** - * vxge_vlan_rx_add_vid - * @dev: net device pointer. - * @vid: vid - * - * Add the vlan id to the devices vlan id table - */ -static void -vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) -{ - struct vxgedev *vdev = netdev_priv(dev); - struct vxge_vpath *vpath; - int vp_id; - - /* Add these vlan to the vid table */ - for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { - vpath = &vdev->vpaths[vp_id]; - if (!vpath->is_open) - continue; - vxge_hw_vpath_vid_add(vpath->handle, vid); - } - set_bit(vid, vdev->active_vlans); -} - -/** - * vxge_vlan_rx_add_vid - * @dev: net device pointer. - * @vid: vid - * - * Remove the vlan id from the device's vlan id table - */ -static void -vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) -{ - struct vxgedev *vdev = netdev_priv(dev); - struct vxge_vpath *vpath; - int vp_id; - - vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); - - /* Delete this vlan from the vid table */ - for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { - vpath = &vdev->vpaths[vp_id]; - if (!vpath->is_open) - continue; - vxge_hw_vpath_vid_delete(vpath->handle, vid); - } - vxge_debug_entryexit(VXGE_TRACE, - "%s:%d Exiting...", __func__, __LINE__); - clear_bit(vid, vdev->active_vlans); -} - -static const struct net_device_ops vxge_netdev_ops = { - .ndo_open = vxge_open, - .ndo_stop = vxge_close, - .ndo_get_stats64 = vxge_get_stats64, - .ndo_start_xmit = vxge_xmit, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_multicast_list = vxge_set_multicast, - .ndo_do_ioctl = vxge_ioctl, - .ndo_set_mac_address = vxge_set_mac_addr, - .ndo_change_mtu = vxge_change_mtu, - .ndo_fix_features = vxge_fix_features, - .ndo_set_features = vxge_set_features, - .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid, - .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid, - .ndo_tx_timeout = vxge_tx_watchdog, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = vxge_netpoll, -#endif -}; - -static int __devinit vxge_device_register(struct __vxge_hw_device *hldev, - struct vxge_config *config, - int high_dma, int no_of_vpath, - struct vxgedev **vdev_out) -{ - struct net_device *ndev; - enum vxge_hw_status status = VXGE_HW_OK; - struct vxgedev *vdev; - int ret = 0, no_of_queue = 1; - u64 stat; - - *vdev_out = NULL; - if (config->tx_steering_type) - no_of_queue = no_of_vpath; - - ndev = alloc_etherdev_mq(sizeof(struct vxgedev), - no_of_queue); - if (ndev == NULL) { - vxge_debug_init( - vxge_hw_device_trace_level_get(hldev), - "%s : device allocation failed", __func__); - ret = -ENODEV; - goto _out0; - } - - vxge_debug_entryexit( - vxge_hw_device_trace_level_get(hldev), - "%s: %s:%d Entering...", - ndev->name, __func__, __LINE__); - - vdev = netdev_priv(ndev); - memset(vdev, 0, sizeof(struct vxgedev)); - - vdev->ndev = ndev; - vdev->devh = hldev; - vdev->pdev = hldev->pdev; - memcpy(&vdev->config, config, sizeof(struct vxge_config)); - vdev->rx_hwts = 0; - vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION); - - SET_NETDEV_DEV(ndev, &vdev->pdev->dev); - - ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG | - NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | - NETIF_F_TSO | NETIF_F_TSO6 | - NETIF_F_HW_VLAN_TX; - if (vdev->config.rth_steering != NO_STEERING) - ndev->hw_features |= NETIF_F_RXHASH; - - ndev->features |= ndev->hw_features | - NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER; - - /* Driver entry points */ - ndev->irq = vdev->pdev->irq; - ndev->base_addr = (unsigned long) hldev->bar0; - - ndev->netdev_ops = &vxge_netdev_ops; - - ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT; - INIT_WORK(&vdev->reset_task, vxge_reset); - - vxge_initialize_ethtool_ops(ndev); - - /* Allocate memory for vpath */ - vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) * - no_of_vpath, GFP_KERNEL); - if (!vdev->vpaths) { - vxge_debug_init(VXGE_ERR, - "%s: vpath memory allocation failed", - vdev->ndev->name); - ret = -ENOMEM; - goto _out1; - } - - vxge_debug_init(vxge_hw_device_trace_level_get(hldev), - "%s : checksuming enabled", __func__); - - if (high_dma) { - ndev->features |= NETIF_F_HIGHDMA; - vxge_debug_init(vxge_hw_device_trace_level_get(hldev), - "%s : using High DMA", __func__); - } - - ret = register_netdev(ndev); - if (ret) { - vxge_debug_init(vxge_hw_device_trace_level_get(hldev), - "%s: %s : device registration failed!", - ndev->name, __func__); - goto _out2; - } - - /* Set the factory defined MAC address initially */ - ndev->addr_len = ETH_ALEN; - - /* Make Link state as off at this point, when the Link change - * interrupt comes the state will be automatically changed to - * the right state. - */ - netif_carrier_off(ndev); - - vxge_debug_init(vxge_hw_device_trace_level_get(hldev), - "%s: Ethernet device registered", - ndev->name); - - hldev->ndev = ndev; - *vdev_out = vdev; - - /* Resetting the Device stats */ - status = vxge_hw_mrpcim_stats_access( - hldev, - VXGE_HW_STATS_OP_CLEAR_ALL_STATS, - 0, - 0, - &stat); - - if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION) - vxge_debug_init( - vxge_hw_device_trace_level_get(hldev), - "%s: device stats clear returns" - "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name); - - vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev), - "%s: %s:%d Exiting...", - ndev->name, __func__, __LINE__); - - return ret; -_out2: - kfree(vdev->vpaths); -_out1: - free_netdev(ndev); -_out0: - return ret; -} - -/* - * vxge_device_unregister - * - * This function will unregister and free network device - */ -static void vxge_device_unregister(struct __vxge_hw_device *hldev) -{ - struct vxgedev *vdev; - struct net_device *dev; - char buf[IFNAMSIZ]; - - dev = hldev->ndev; - vdev = netdev_priv(dev); - - vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name, - __func__, __LINE__); - - strncpy(buf, dev->name, IFNAMSIZ); - - flush_work_sync(&vdev->reset_task); - - /* in 2.6 will call stop() if device is up */ - unregister_netdev(dev); - - kfree(vdev->vpaths); - - /* we are safe to free it now */ - free_netdev(dev); - - vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered", - buf); - vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d Exiting...", buf, - __func__, __LINE__); -} - -/* - * vxge_callback_crit_err - * - * This function is called by the alarm handler in interrupt context. - * Driver must analyze it based on the event type. - */ -static void -vxge_callback_crit_err(struct __vxge_hw_device *hldev, - enum vxge_hw_event type, u64 vp_id) -{ - struct net_device *dev = hldev->ndev; - struct vxgedev *vdev = netdev_priv(dev); - struct vxge_vpath *vpath = NULL; - int vpath_idx; - - vxge_debug_entryexit(vdev->level_trace, - "%s: %s:%d", vdev->ndev->name, __func__, __LINE__); - - /* Note: This event type should be used for device wide - * indications only - Serious errors, Slot freeze and critical errors - */ - vdev->cric_err_event = type; - - for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { - vpath = &vdev->vpaths[vpath_idx]; - if (vpath->device_id == vp_id) - break; - } - - if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) { - if (type == VXGE_HW_EVENT_SLOT_FREEZE) { - vxge_debug_init(VXGE_ERR, - "%s: Slot is frozen", vdev->ndev->name); - } else if (type == VXGE_HW_EVENT_SERR) { - vxge_debug_init(VXGE_ERR, - "%s: Encountered Serious Error", - vdev->ndev->name); - } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) - vxge_debug_init(VXGE_ERR, - "%s: Encountered Critical Error", - vdev->ndev->name); - } - - if ((type == VXGE_HW_EVENT_SERR) || - (type == VXGE_HW_EVENT_SLOT_FREEZE)) { - if (unlikely(vdev->exec_mode)) - clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); - } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) { - vxge_hw_device_mask_all(hldev); - if (unlikely(vdev->exec_mode)) - clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); - } else if ((type == VXGE_HW_EVENT_FIFO_ERR) || - (type == VXGE_HW_EVENT_VPATH_ERR)) { - - if (unlikely(vdev->exec_mode)) - clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); - else { - /* check if this vpath is already set for reset */ - if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) { - - /* disable interrupts for this vpath */ - vxge_vpath_intr_disable(vdev, vpath_idx); - - /* stop the queue for this vpath */ - netif_tx_stop_queue(vpath->fifo.txq); - } - } - } - - vxge_debug_entryexit(vdev->level_trace, - "%s: %s:%d Exiting...", - vdev->ndev->name, __func__, __LINE__); -} - -static void verify_bandwidth(void) -{ - int i, band_width, total = 0, equal_priority = 0; - - /* 1. If user enters 0 for some fifo, give equal priority to all */ - for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { - if (bw_percentage[i] == 0) { - equal_priority = 1; - break; - } - } - - if (!equal_priority) { - /* 2. If sum exceeds 100, give equal priority to all */ - for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { - if (bw_percentage[i] == 0xFF) - break; - - total += bw_percentage[i]; - if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) { - equal_priority = 1; - break; - } - } - } - - if (!equal_priority) { - /* Is all the bandwidth consumed? */ - if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) { - if (i < VXGE_HW_MAX_VIRTUAL_PATHS) { - /* Split rest of bw equally among next VPs*/ - band_width = - (VXGE_HW_VPATH_BANDWIDTH_MAX - total) / - (VXGE_HW_MAX_VIRTUAL_PATHS - i); - if (band_width < 2) /* min of 2% */ - equal_priority = 1; - else { - for (; i < VXGE_HW_MAX_VIRTUAL_PATHS; - i++) - bw_percentage[i] = - band_width; - } - } - } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS) - equal_priority = 1; - } - - if (equal_priority) { - vxge_debug_init(VXGE_ERR, - "%s: Assigning equal bandwidth to all the vpaths", - VXGE_DRIVER_NAME); - bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX / - VXGE_HW_MAX_VIRTUAL_PATHS; - for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) - bw_percentage[i] = bw_percentage[0]; - } -} - -/* - * Vpath configuration - */ -static int __devinit vxge_config_vpaths( - struct vxge_hw_device_config *device_config, - u64 vpath_mask, struct vxge_config *config_param) -{ - int i, no_of_vpaths = 0, default_no_vpath = 0, temp; - u32 txdl_size, txdl_per_memblock; - - temp = driver_config->vpath_per_dev; - if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) && - (max_config_dev == VXGE_MAX_CONFIG_DEV)) { - /* No more CPU. Return vpath number as zero.*/ - if (driver_config->g_no_cpus == -1) - return 0; - - if (!driver_config->g_no_cpus) - driver_config->g_no_cpus = num_online_cpus(); - - driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1; - if (!driver_config->vpath_per_dev) - driver_config->vpath_per_dev = 1; - - for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) - if (!vxge_bVALn(vpath_mask, i, 1)) - continue; - else - default_no_vpath++; - if (default_no_vpath < driver_config->vpath_per_dev) - driver_config->vpath_per_dev = default_no_vpath; - - driver_config->g_no_cpus = driver_config->g_no_cpus - - (driver_config->vpath_per_dev * 2); - if (driver_config->g_no_cpus <= 0) - driver_config->g_no_cpus = -1; - } - - if (driver_config->vpath_per_dev == 1) { - vxge_debug_ll_config(VXGE_TRACE, - "%s: Disable tx and rx steering, " - "as single vpath is configured", VXGE_DRIVER_NAME); - config_param->rth_steering = NO_STEERING; - config_param->tx_steering_type = NO_STEERING; - device_config->rth_en = 0; - } - - /* configure bandwidth */ - for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) - device_config->vp_config[i].min_bandwidth = bw_percentage[i]; - - for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { - device_config->vp_config[i].vp_id = i; - device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU; - if (no_of_vpaths < driver_config->vpath_per_dev) { - if (!vxge_bVALn(vpath_mask, i, 1)) { - vxge_debug_ll_config(VXGE_TRACE, - "%s: vpath: %d is not available", - VXGE_DRIVER_NAME, i); - continue; - } else { - vxge_debug_ll_config(VXGE_TRACE, - "%s: vpath: %d available", - VXGE_DRIVER_NAME, i); - no_of_vpaths++; - } - } else { - vxge_debug_ll_config(VXGE_TRACE, - "%s: vpath: %d is not configured, " - "max_config_vpath exceeded", - VXGE_DRIVER_NAME, i); - break; - } - - /* Configure Tx fifo's */ - device_config->vp_config[i].fifo.enable = - VXGE_HW_FIFO_ENABLE; - device_config->vp_config[i].fifo.max_frags = - MAX_SKB_FRAGS + 1; - device_config->vp_config[i].fifo.memblock_size = - VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE; - - txdl_size = device_config->vp_config[i].fifo.max_frags * - sizeof(struct vxge_hw_fifo_txd); - txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size; - - device_config->vp_config[i].fifo.fifo_blocks = - ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1; - - device_config->vp_config[i].fifo.intr = - VXGE_HW_FIFO_QUEUE_INTR_DISABLE; - - /* Configure tti properties */ - device_config->vp_config[i].tti.intr_enable = - VXGE_HW_TIM_INTR_ENABLE; - - device_config->vp_config[i].tti.btimer_val = - (VXGE_TTI_BTIMER_VAL * 1000) / 272; - - device_config->vp_config[i].tti.timer_ac_en = - VXGE_HW_TIM_TIMER_AC_ENABLE; - - /* For msi-x with napi (each vector has a handler of its own) - - * Set CI to OFF for all vpaths - */ - device_config->vp_config[i].tti.timer_ci_en = - VXGE_HW_TIM_TIMER_CI_DISABLE; - - device_config->vp_config[i].tti.timer_ri_en = - VXGE_HW_TIM_TIMER_RI_DISABLE; - - device_config->vp_config[i].tti.util_sel = - VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL; - - device_config->vp_config[i].tti.ltimer_val = - (VXGE_TTI_LTIMER_VAL * 1000) / 272; - - device_config->vp_config[i].tti.rtimer_val = - (VXGE_TTI_RTIMER_VAL * 1000) / 272; - - device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A; - device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B; - device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C; - device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A; - device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B; - device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C; - device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D; - - /* Configure Rx rings */ - device_config->vp_config[i].ring.enable = - VXGE_HW_RING_ENABLE; - - device_config->vp_config[i].ring.ring_blocks = - VXGE_HW_DEF_RING_BLOCKS; - - device_config->vp_config[i].ring.buffer_mode = - VXGE_HW_RING_RXD_BUFFER_MODE_1; - - device_config->vp_config[i].ring.rxds_limit = - VXGE_HW_DEF_RING_RXDS_LIMIT; - - device_config->vp_config[i].ring.scatter_mode = - VXGE_HW_RING_SCATTER_MODE_A; - - /* Configure rti properties */ - device_config->vp_config[i].rti.intr_enable = - VXGE_HW_TIM_INTR_ENABLE; - - device_config->vp_config[i].rti.btimer_val = - (VXGE_RTI_BTIMER_VAL * 1000)/272; - - device_config->vp_config[i].rti.timer_ac_en = - VXGE_HW_TIM_TIMER_AC_ENABLE; - - device_config->vp_config[i].rti.timer_ci_en = - VXGE_HW_TIM_TIMER_CI_DISABLE; - - device_config->vp_config[i].rti.timer_ri_en = - VXGE_HW_TIM_TIMER_RI_DISABLE; - - device_config->vp_config[i].rti.util_sel = - VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL; - - device_config->vp_config[i].rti.urange_a = - RTI_RX_URANGE_A; - device_config->vp_config[i].rti.urange_b = - RTI_RX_URANGE_B; - device_config->vp_config[i].rti.urange_c = - RTI_RX_URANGE_C; - device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A; - device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B; - device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C; - device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D; - - device_config->vp_config[i].rti.rtimer_val = - (VXGE_RTI_RTIMER_VAL * 1000) / 272; - - device_config->vp_config[i].rti.ltimer_val = - (VXGE_RTI_LTIMER_VAL * 1000) / 272; - - device_config->vp_config[i].rpa_strip_vlan_tag = - vlan_tag_strip; - } - - driver_config->vpath_per_dev = temp; - return no_of_vpaths; -} - -/* initialize device configuratrions */ -static void __devinit vxge_device_config_init( - struct vxge_hw_device_config *device_config, - int *intr_type) -{ - /* Used for CQRQ/SRQ. */ - device_config->dma_blockpool_initial = - VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE; - - device_config->dma_blockpool_max = - VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE; - - if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT) - max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT; - -#ifndef CONFIG_PCI_MSI - vxge_debug_init(VXGE_ERR, - "%s: This Kernel does not support " - "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME); - *intr_type = INTA; -#endif - - /* Configure whether MSI-X or IRQL. */ - switch (*intr_type) { - case INTA: - device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE; - break; - - case MSI_X: - device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT; - break; - } - - /* Timer period between device poll */ - device_config->device_poll_millis = VXGE_TIMER_DELAY; - - /* Configure mac based steering. */ - device_config->rts_mac_en = addr_learn_en; - - /* Configure Vpaths */ - device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT; - - vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ", - __func__); - vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d", - device_config->intr_mode); - vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d", - device_config->device_poll_millis); - vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d", - device_config->rth_en); - vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d", - device_config->rth_it_type); -} - -static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask) -{ - int i; - - vxge_debug_init(VXGE_TRACE, - "%s: %d Vpath(s) opened", - vdev->ndev->name, vdev->no_of_vpath); - - switch (vdev->config.intr_type) { - case INTA: - vxge_debug_init(VXGE_TRACE, - "%s: Interrupt type INTA", vdev->ndev->name); - break; - - case MSI_X: - vxge_debug_init(VXGE_TRACE, - "%s: Interrupt type MSI-X", vdev->ndev->name); - break; - } - - if (vdev->config.rth_steering) { - vxge_debug_init(VXGE_TRACE, - "%s: RTH steering enabled for TCP_IPV4", - vdev->ndev->name); - } else { - vxge_debug_init(VXGE_TRACE, - "%s: RTH steering disabled", vdev->ndev->name); - } - - switch (vdev->config.tx_steering_type) { - case NO_STEERING: - vxge_debug_init(VXGE_TRACE, - "%s: Tx steering disabled", vdev->ndev->name); - break; - case TX_PRIORITY_STEERING: - vxge_debug_init(VXGE_TRACE, - "%s: Unsupported tx steering option", - vdev->ndev->name); - vxge_debug_init(VXGE_TRACE, - "%s: Tx steering disabled", vdev->ndev->name); - vdev->config.tx_steering_type = 0; - break; - case TX_VLAN_STEERING: - vxge_debug_init(VXGE_TRACE, - "%s: Unsupported tx steering option", - vdev->ndev->name); - vxge_debug_init(VXGE_TRACE, - "%s: Tx steering disabled", vdev->ndev->name); - vdev->config.tx_steering_type = 0; - break; - case TX_MULTIQ_STEERING: - vxge_debug_init(VXGE_TRACE, - "%s: Tx multiqueue steering enabled", - vdev->ndev->name); - break; - case TX_PORT_STEERING: - vxge_debug_init(VXGE_TRACE, - "%s: Tx port steering enabled", - vdev->ndev->name); - break; - default: - vxge_debug_init(VXGE_ERR, - "%s: Unsupported tx steering type", - vdev->ndev->name); - vxge_debug_init(VXGE_TRACE, - "%s: Tx steering disabled", vdev->ndev->name); - vdev->config.tx_steering_type = 0; - } - - if (vdev->config.addr_learn_en) - vxge_debug_init(VXGE_TRACE, - "%s: MAC Address learning enabled", vdev->ndev->name); - - for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { - if (!vxge_bVALn(vpath_mask, i, 1)) - continue; - vxge_debug_ll_config(VXGE_TRACE, - "%s: MTU size - %d", vdev->ndev->name, - ((struct __vxge_hw_device *)(vdev->devh))-> - config.vp_config[i].mtu); - vxge_debug_init(VXGE_TRACE, - "%s: VLAN tag stripping %s", vdev->ndev->name, - ((struct __vxge_hw_device *)(vdev->devh))-> - config.vp_config[i].rpa_strip_vlan_tag - ? "Enabled" : "Disabled"); - vxge_debug_ll_config(VXGE_TRACE, - "%s: Max frags : %d", vdev->ndev->name, - ((struct __vxge_hw_device *)(vdev->devh))-> - config.vp_config[i].fifo.max_frags); - break; - } -} - -#ifdef CONFIG_PM -/** - * vxge_pm_suspend - vxge power management suspend entry point - * - */ -static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state) -{ - return -ENOSYS; -} -/** - * vxge_pm_resume - vxge power management resume entry point - * - */ -static int vxge_pm_resume(struct pci_dev *pdev) -{ - return -ENOSYS; -} - -#endif - -/** - * vxge_io_error_detected - called when PCI error is detected - * @pdev: Pointer to PCI device - * @state: The current pci connection state - * - * This function is called after a PCI bus error affecting - * this device has been detected. - */ -static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev, - pci_channel_state_t state) -{ - struct __vxge_hw_device *hldev = pci_get_drvdata(pdev); - struct net_device *netdev = hldev->ndev; - - netif_device_detach(netdev); - - if (state == pci_channel_io_perm_failure) - return PCI_ERS_RESULT_DISCONNECT; - - if (netif_running(netdev)) { - /* Bring down the card, while avoiding PCI I/O */ - do_vxge_close(netdev, 0); - } - - pci_disable_device(pdev); - - return PCI_ERS_RESULT_NEED_RESET; -} - -/** - * vxge_io_slot_reset - called after the pci bus has been reset. - * @pdev: Pointer to PCI device - * - * Restart the card from scratch, as if from a cold-boot. - * At this point, the card has exprienced a hard reset, - * followed by fixups by BIOS, and has its config space - * set up identically to what it was at cold boot. - */ -static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev) -{ - struct __vxge_hw_device *hldev = pci_get_drvdata(pdev); - struct net_device *netdev = hldev->ndev; - - struct vxgedev *vdev = netdev_priv(netdev); - - if (pci_enable_device(pdev)) { - netdev_err(netdev, "Cannot re-enable device after reset\n"); - return PCI_ERS_RESULT_DISCONNECT; - } - - pci_set_master(pdev); - do_vxge_reset(vdev, VXGE_LL_FULL_RESET); - - return PCI_ERS_RESULT_RECOVERED; -} - -/** - * vxge_io_resume - called when traffic can start flowing again. - * @pdev: Pointer to PCI device - * - * This callback is called when the error recovery driver tells - * us that its OK to resume normal operation. - */ -static void vxge_io_resume(struct pci_dev *pdev) -{ - struct __vxge_hw_device *hldev = pci_get_drvdata(pdev); - struct net_device *netdev = hldev->ndev; - - if (netif_running(netdev)) { - if (vxge_open(netdev)) { - netdev_err(netdev, - "Can't bring device back up after reset\n"); - return; - } - } - - netif_device_attach(netdev); -} - -static inline u32 vxge_get_num_vfs(u64 function_mode) -{ - u32 num_functions = 0; - - switch (function_mode) { - case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION: - case VXGE_HW_FUNCTION_MODE_SRIOV_8: - num_functions = 8; - break; - case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION: - num_functions = 1; - break; - case VXGE_HW_FUNCTION_MODE_SRIOV: - case VXGE_HW_FUNCTION_MODE_MRIOV: - case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17: - num_functions = 17; - break; - case VXGE_HW_FUNCTION_MODE_SRIOV_4: - num_functions = 4; - break; - case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2: - num_functions = 2; - break; - case VXGE_HW_FUNCTION_MODE_MRIOV_8: - num_functions = 8; /* TODO */ - break; - } - return num_functions; -} - -int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override) -{ - struct __vxge_hw_device *hldev = vdev->devh; - u32 maj, min, bld, cmaj, cmin, cbld; - enum vxge_hw_status status; - const struct firmware *fw; - int ret; - - ret = request_firmware(&fw, fw_name, &vdev->pdev->dev); - if (ret) { - vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found", - VXGE_DRIVER_NAME, fw_name); - goto out; - } - - /* Load the new firmware onto the adapter */ - status = vxge_update_fw_image(hldev, fw->data, fw->size); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "%s: FW image download to adapter failed '%s'.", - VXGE_DRIVER_NAME, fw_name); - ret = -EIO; - goto out; - } - - /* Read the version of the new firmware */ - status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "%s: Upgrade read version failed '%s'.", - VXGE_DRIVER_NAME, fw_name); - ret = -EIO; - goto out; - } - - cmaj = vdev->config.device_hw_info.fw_version.major; - cmin = vdev->config.device_hw_info.fw_version.minor; - cbld = vdev->config.device_hw_info.fw_version.build; - /* It's possible the version in /lib/firmware is not the latest version. - * If so, we could get into a loop of trying to upgrade to the latest - * and flashing the older version. - */ - if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) && - !override) { - ret = -EINVAL; - goto out; - } - - printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n", - maj, min, bld); - - /* Flash the adapter with the new firmware */ - status = vxge_hw_flash_fw(hldev); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.", - VXGE_DRIVER_NAME, fw_name); - ret = -EIO; - goto out; - } - - printk(KERN_NOTICE "Upgrade of firmware successful! Adapter must be " - "hard reset before using, thus requiring a system reboot or a " - "hotplug event.\n"); - -out: - release_firmware(fw); - return ret; -} - -static int vxge_probe_fw_update(struct vxgedev *vdev) -{ - u32 maj, min, bld; - int ret, gpxe = 0; - char *fw_name; - - maj = vdev->config.device_hw_info.fw_version.major; - min = vdev->config.device_hw_info.fw_version.minor; - bld = vdev->config.device_hw_info.fw_version.build; - - if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER) - return 0; - - /* Ignore the build number when determining if the current firmware is - * "too new" to load the driver - */ - if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) { - vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known " - "version, unable to load driver\n", - VXGE_DRIVER_NAME); - return -EINVAL; - } - - /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to - * work with this driver. - */ - if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) { - vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be " - "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld); - return -EINVAL; - } - - /* If file not specified, determine gPXE or not */ - if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) { - int i; - for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) - if (vdev->devh->eprom_versions[i]) { - gpxe = 1; - break; - } - } - if (gpxe) - fw_name = "vxge/X3fw-pxe.ncf"; - else - fw_name = "vxge/X3fw.ncf"; - - ret = vxge_fw_upgrade(vdev, fw_name, 0); - /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on - * probe, so ignore them - */ - if (ret != -EINVAL && ret != -ENOENT) - return -EIO; - else - ret = 0; - - if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) > - VXGE_FW_VER(maj, min, 0)) { - vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to" - " be used with this driver.\n" - "Please get the latest version from " - "ftp://ftp.s2io.com/pub/X3100-Drivers/FIRMWARE", - VXGE_DRIVER_NAME, maj, min, bld); - return -EINVAL; - } - - return ret; -} - -static int __devinit is_sriov_initialized(struct pci_dev *pdev) -{ - int pos; - u16 ctrl; - - pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); - if (pos) { - pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl); - if (ctrl & PCI_SRIOV_CTRL_VFE) - return 1; - } - return 0; -} - -/** - * vxge_probe - * @pdev : structure containing the PCI related information of the device. - * @pre: List of PCI devices supported by the driver listed in vxge_id_table. - * Description: - * This function is called when a new PCI device gets detected and initializes - * it. - * Return value: - * returns 0 on success and negative on failure. - * - */ -static int __devinit -vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre) -{ - struct __vxge_hw_device *hldev; - enum vxge_hw_status status; - int ret; - int high_dma = 0; - u64 vpath_mask = 0; - struct vxgedev *vdev; - struct vxge_config *ll_config = NULL; - struct vxge_hw_device_config *device_config = NULL; - struct vxge_hw_device_attr attr; - int i, j, no_of_vpath = 0, max_vpath_supported = 0; - u8 *macaddr; - struct vxge_mac_addrs *entry; - static int bus = -1, device = -1; - u32 host_type; - u8 new_device = 0; - enum vxge_hw_status is_privileged; - u32 function_mode; - u32 num_vfs = 0; - - vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); - attr.pdev = pdev; - - /* In SRIOV-17 mode, functions of the same adapter - * can be deployed on different buses - */ - if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) && - !pdev->is_virtfn) - new_device = 1; - - bus = pdev->bus->number; - device = PCI_SLOT(pdev->devfn); - - if (new_device) { - if (driver_config->config_dev_cnt && - (driver_config->config_dev_cnt != - driver_config->total_dev_cnt)) - vxge_debug_init(VXGE_ERR, - "%s: Configured %d of %d devices", - VXGE_DRIVER_NAME, - driver_config->config_dev_cnt, - driver_config->total_dev_cnt); - driver_config->config_dev_cnt = 0; - driver_config->total_dev_cnt = 0; - } - - /* Now making the CPU based no of vpath calculation - * applicable for individual functions as well. - */ - driver_config->g_no_cpus = 0; - driver_config->vpath_per_dev = max_config_vpath; - - driver_config->total_dev_cnt++; - if (++driver_config->config_dev_cnt > max_config_dev) { - ret = 0; - goto _exit0; - } - - device_config = kzalloc(sizeof(struct vxge_hw_device_config), - GFP_KERNEL); - if (!device_config) { - ret = -ENOMEM; - vxge_debug_init(VXGE_ERR, - "device_config : malloc failed %s %d", - __FILE__, __LINE__); - goto _exit0; - } - - ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL); - if (!ll_config) { - ret = -ENOMEM; - vxge_debug_init(VXGE_ERR, - "device_config : malloc failed %s %d", - __FILE__, __LINE__); - goto _exit0; - } - ll_config->tx_steering_type = TX_MULTIQ_STEERING; - ll_config->intr_type = MSI_X; - ll_config->napi_weight = NEW_NAPI_WEIGHT; - ll_config->rth_steering = RTH_STEERING; - - /* get the default configuration parameters */ - vxge_hw_device_config_default_get(device_config); - - /* initialize configuration parameters */ - vxge_device_config_init(device_config, &ll_config->intr_type); - - ret = pci_enable_device(pdev); - if (ret) { - vxge_debug_init(VXGE_ERR, - "%s : can not enable PCI device", __func__); - goto _exit0; - } - - if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { - vxge_debug_ll_config(VXGE_TRACE, - "%s : using 64bit DMA", __func__); - - high_dma = 1; - - if (pci_set_consistent_dma_mask(pdev, - DMA_BIT_MASK(64))) { - vxge_debug_init(VXGE_ERR, - "%s : unable to obtain 64bit DMA for " - "consistent allocations", __func__); - ret = -ENOMEM; - goto _exit1; - } - } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { - vxge_debug_ll_config(VXGE_TRACE, - "%s : using 32bit DMA", __func__); - } else { - ret = -ENOMEM; - goto _exit1; - } - - ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME); - if (ret) { - vxge_debug_init(VXGE_ERR, - "%s : request regions failed", __func__); - goto _exit1; - } - - pci_set_master(pdev); - - attr.bar0 = pci_ioremap_bar(pdev, 0); - if (!attr.bar0) { - vxge_debug_init(VXGE_ERR, - "%s : cannot remap io memory bar0", __func__); - ret = -ENODEV; - goto _exit2; - } - vxge_debug_ll_config(VXGE_TRACE, - "pci ioremap bar0: %p:0x%llx", - attr.bar0, - (unsigned long long)pci_resource_start(pdev, 0)); - - status = vxge_hw_device_hw_info_get(attr.bar0, - &ll_config->device_hw_info); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "%s: Reading of hardware info failed." - "Please try upgrading the firmware.", VXGE_DRIVER_NAME); - ret = -EINVAL; - goto _exit3; - } - - vpath_mask = ll_config->device_hw_info.vpath_mask; - if (vpath_mask == 0) { - vxge_debug_ll_config(VXGE_TRACE, - "%s: No vpaths available in device", VXGE_DRIVER_NAME); - ret = -EINVAL; - goto _exit3; - } - - vxge_debug_ll_config(VXGE_TRACE, - "%s:%d Vpath mask = %llx", __func__, __LINE__, - (unsigned long long)vpath_mask); - - function_mode = ll_config->device_hw_info.function_mode; - host_type = ll_config->device_hw_info.host_type; - is_privileged = __vxge_hw_device_is_privilaged(host_type, - ll_config->device_hw_info.func_id); - - /* Check how many vpaths are available */ - for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { - if (!((vpath_mask) & vxge_mBIT(i))) - continue; - max_vpath_supported++; - } - - if (new_device) - num_vfs = vxge_get_num_vfs(function_mode) - 1; - - /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */ - if (is_sriov(function_mode) && !is_sriov_initialized(pdev) && - (ll_config->intr_type != INTA)) { - ret = pci_enable_sriov(pdev, num_vfs); - if (ret) - vxge_debug_ll_config(VXGE_ERR, - "Failed in enabling SRIOV mode: %d\n", ret); - /* No need to fail out, as an error here is non-fatal */ - } - - /* - * Configure vpaths and get driver configured number of vpaths - * which is less than or equal to the maximum vpaths per function. - */ - no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config); - if (!no_of_vpath) { - vxge_debug_ll_config(VXGE_ERR, - "%s: No more vpaths to configure", VXGE_DRIVER_NAME); - ret = 0; - goto _exit3; - } - - /* Setting driver callbacks */ - attr.uld_callbacks.link_up = vxge_callback_link_up; - attr.uld_callbacks.link_down = vxge_callback_link_down; - attr.uld_callbacks.crit_err = vxge_callback_crit_err; - - status = vxge_hw_device_initialize(&hldev, &attr, device_config); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, - "Failed to initialize device (%d)", status); - ret = -EINVAL; - goto _exit3; - } - - if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major, - ll_config->device_hw_info.fw_version.minor, - ll_config->device_hw_info.fw_version.build) >= - VXGE_EPROM_FW_VER) { - struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES]; - - status = vxge_hw_vpath_eprom_img_ver_get(hldev, img); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed", - VXGE_DRIVER_NAME); - /* This is a non-fatal error, continue */ - } - - for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) { - hldev->eprom_versions[i] = img[i].version; - if (!img[i].is_valid) - break; - vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version " - "%d.%d.%d.%d", VXGE_DRIVER_NAME, i, - VXGE_EPROM_IMG_MAJOR(img[i].version), - VXGE_EPROM_IMG_MINOR(img[i].version), - VXGE_EPROM_IMG_FIX(img[i].version), - VXGE_EPROM_IMG_BUILD(img[i].version)); - } - } - - /* if FCS stripping is not disabled in MAC fail driver load */ - status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC" - " failing driver load", VXGE_DRIVER_NAME); - ret = -EINVAL; - goto _exit4; - } - - /* Always enable HWTS. This will always cause the FCS to be invalid, - * due to the fact that HWTS is using the FCS as the location of the - * timestamp. The HW FCS checking will still correctly determine if - * there is a valid checksum, and the FCS is being removed by the driver - * anyway. So no fucntionality is being lost. Since it is always - * enabled, we now simply use the ioctl call to set whether or not the - * driver should be paying attention to the HWTS. - */ - if (is_privileged == VXGE_HW_OK) { - status = vxge_timestamp_config(hldev); - if (status != VXGE_HW_OK) { - vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed", - VXGE_DRIVER_NAME); - ret = -EFAULT; - goto _exit4; - } - } - - vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL); - - /* set private device info */ - pci_set_drvdata(pdev, hldev); - - ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS; - ll_config->addr_learn_en = addr_learn_en; - ll_config->rth_algorithm = RTH_ALG_JENKINS; - ll_config->rth_hash_type_tcpipv4 = 1; - ll_config->rth_hash_type_ipv4 = 0; - ll_config->rth_hash_type_tcpipv6 = 0; - ll_config->rth_hash_type_ipv6 = 0; - ll_config->rth_hash_type_tcpipv6ex = 0; - ll_config->rth_hash_type_ipv6ex = 0; - ll_config->rth_bkt_sz = RTH_BUCKET_SIZE; - ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE; - ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE; - - ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath, - &vdev); - if (ret) { - ret = -EINVAL; - goto _exit4; - } - - ret = vxge_probe_fw_update(vdev); - if (ret) - goto _exit5; - - vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL); - VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev), - vxge_hw_device_trace_level_get(hldev)); - - /* set private HW device info */ - vdev->mtu = VXGE_HW_DEFAULT_MTU; - vdev->bar0 = attr.bar0; - vdev->max_vpath_supported = max_vpath_supported; - vdev->no_of_vpath = no_of_vpath; - - /* Virtual Path count */ - for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { - if (!vxge_bVALn(vpath_mask, i, 1)) - continue; - if (j >= vdev->no_of_vpath) - break; - - vdev->vpaths[j].is_configured = 1; - vdev->vpaths[j].device_id = i; - vdev->vpaths[j].ring.driver_id = j; - vdev->vpaths[j].vdev = vdev; - vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath; - memcpy((u8 *)vdev->vpaths[j].macaddr, - ll_config->device_hw_info.mac_addrs[i], - ETH_ALEN); - - /* Initialize the mac address list header */ - INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list); - - vdev->vpaths[j].mac_addr_cnt = 0; - vdev->vpaths[j].mcast_addr_cnt = 0; - j++; - } - vdev->exec_mode = VXGE_EXEC_MODE_DISABLE; - vdev->max_config_port = max_config_port; - - vdev->vlan_tag_strip = vlan_tag_strip; - - /* map the hashing selector table to the configured vpaths */ - for (i = 0; i < vdev->no_of_vpath; i++) - vdev->vpath_selector[i] = vpath_selector[i]; - - macaddr = (u8 *)vdev->vpaths[0].macaddr; - - ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0'; - ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0'; - ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0'; - - vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s", - vdev->ndev->name, ll_config->device_hw_info.serial_number); - - vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s", - vdev->ndev->name, ll_config->device_hw_info.part_number); - - vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter", - vdev->ndev->name, ll_config->device_hw_info.product_desc); - - vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM", - vdev->ndev->name, macaddr); - - vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d", - vdev->ndev->name, vxge_hw_device_link_width_get(hldev)); - - vxge_debug_init(VXGE_TRACE, - "%s: Firmware version : %s Date : %s", vdev->ndev->name, - ll_config->device_hw_info.fw_version.version, - ll_config->device_hw_info.fw_date.date); - - if (new_device) { - switch (ll_config->device_hw_info.function_mode) { - case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION: - vxge_debug_init(VXGE_TRACE, - "%s: Single Function Mode Enabled", vdev->ndev->name); - break; - case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION: - vxge_debug_init(VXGE_TRACE, - "%s: Multi Function Mode Enabled", vdev->ndev->name); - break; - case VXGE_HW_FUNCTION_MODE_SRIOV: - vxge_debug_init(VXGE_TRACE, - "%s: Single Root IOV Mode Enabled", vdev->ndev->name); - break; - case VXGE_HW_FUNCTION_MODE_MRIOV: - vxge_debug_init(VXGE_TRACE, - "%s: Multi Root IOV Mode Enabled", vdev->ndev->name); - break; - } - } - - vxge_print_parm(vdev, vpath_mask); - - /* Store the fw version for ethttool option */ - strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version); - memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN); - memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN); - - /* Copy the station mac address to the list */ - for (i = 0; i < vdev->no_of_vpath; i++) { - entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL); - if (NULL == entry) { - vxge_debug_init(VXGE_ERR, - "%s: mac_addr_list : memory allocation failed", - vdev->ndev->name); - ret = -EPERM; - goto _exit6; - } - macaddr = (u8 *)&entry->macaddr; - memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN); - list_add(&entry->item, &vdev->vpaths[i].mac_addr_list); - vdev->vpaths[i].mac_addr_cnt = 1; - } - - kfree(device_config); - - /* - * INTA is shared in multi-function mode. This is unlike the INTA - * implementation in MR mode, where each VH has its own INTA message. - * - INTA is masked (disabled) as long as at least one function sets - * its TITAN_MASK_ALL_INT.ALARM bit. - * - INTA is unmasked (enabled) when all enabled functions have cleared - * their own TITAN_MASK_ALL_INT.ALARM bit. - * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up. - * Though this driver leaves the top level interrupts unmasked while - * leaving the required module interrupt bits masked on exit, there - * could be a rougue driver around that does not follow this procedure - * resulting in a failure to generate interrupts. The following code is - * present to prevent such a failure. - */ - - if (ll_config->device_hw_info.function_mode == - VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) - if (vdev->config.intr_type == INTA) - vxge_hw_device_unmask_all(hldev); - - vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...", - vdev->ndev->name, __func__, __LINE__); - - vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL); - VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev), - vxge_hw_device_trace_level_get(hldev)); - - kfree(ll_config); - return 0; - -_exit6: - for (i = 0; i < vdev->no_of_vpath; i++) - vxge_free_mac_add_list(&vdev->vpaths[i]); -_exit5: - vxge_device_unregister(hldev); -_exit4: - pci_set_drvdata(pdev, NULL); - vxge_hw_device_terminate(hldev); - pci_disable_sriov(pdev); -_exit3: - iounmap(attr.bar0); -_exit2: - pci_release_region(pdev, 0); -_exit1: - pci_disable_device(pdev); -_exit0: - kfree(ll_config); - kfree(device_config); - driver_config->config_dev_cnt--; - driver_config->total_dev_cnt--; - return ret; -} - -/** - * vxge_rem_nic - Free the PCI device - * @pdev: structure containing the PCI related information of the device. - * Description: This function is called by the Pci subsystem to release a - * PCI device and free up all resource held up by the device. - */ -static void __devexit vxge_remove(struct pci_dev *pdev) -{ - struct __vxge_hw_device *hldev; - struct vxgedev *vdev; - int i; - - hldev = pci_get_drvdata(pdev); - if (hldev == NULL) - return; - - vdev = netdev_priv(hldev->ndev); - - vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__); - vxge_debug_init(vdev->level_trace, "%s : removing PCI device...", - __func__); - - for (i = 0; i < vdev->no_of_vpath; i++) - vxge_free_mac_add_list(&vdev->vpaths[i]); - - vxge_device_unregister(hldev); - pci_set_drvdata(pdev, NULL); - /* Do not call pci_disable_sriov here, as it will break child devices */ - vxge_hw_device_terminate(hldev); - iounmap(vdev->bar0); - pci_release_region(pdev, 0); - pci_disable_device(pdev); - driver_config->config_dev_cnt--; - driver_config->total_dev_cnt--; - - vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered", - __func__, __LINE__); - vxge_debug_entryexit(vdev->level_trace, "%s:%d Exiting...", __func__, - __LINE__); -} - -static struct pci_error_handlers vxge_err_handler = { - .error_detected = vxge_io_error_detected, - .slot_reset = vxge_io_slot_reset, - .resume = vxge_io_resume, -}; - -static struct pci_driver vxge_driver = { - .name = VXGE_DRIVER_NAME, - .id_table = vxge_id_table, - .probe = vxge_probe, - .remove = __devexit_p(vxge_remove), -#ifdef CONFIG_PM - .suspend = vxge_pm_suspend, - .resume = vxge_pm_resume, -#endif - .err_handler = &vxge_err_handler, -}; - -static int __init -vxge_starter(void) -{ - int ret = 0; - - pr_info("Copyright(c) 2002-2010 Exar Corp.\n"); - pr_info("Driver version: %s\n", DRV_VERSION); - - verify_bandwidth(); - - driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL); - if (!driver_config) - return -ENOMEM; - - ret = pci_register_driver(&vxge_driver); - if (ret) { - kfree(driver_config); - goto err; - } - - if (driver_config->config_dev_cnt && - (driver_config->config_dev_cnt != driver_config->total_dev_cnt)) - vxge_debug_init(VXGE_ERR, - "%s: Configured %d of %d devices", - VXGE_DRIVER_NAME, driver_config->config_dev_cnt, - driver_config->total_dev_cnt); -err: - return ret; -} - -static void __exit -vxge_closer(void) -{ - pci_unregister_driver(&vxge_driver); - kfree(driver_config); -} -module_init(vxge_starter); -module_exit(vxge_closer); |