mirror of https://gitee.com/openkylin/linux.git
1856 lines
46 KiB
C
1856 lines
46 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Driver for Gigabit Ethernet adapters based on the Session Layer
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* Interface (SLIC) technology by Alacritech. The driver does not
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* support the hardware acceleration features provided by these cards.
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*
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* Copyright (C) 2016 Lino Sanfilippo <LinoSanfilippo@gmx.de>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/if_ether.h>
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#include <linux/crc32.h>
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#include <linux/dma-mapping.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/firmware.h>
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#include <linux/list.h>
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#include <linux/u64_stats_sync.h>
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#include "slic.h"
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#define DRV_NAME "slicoss"
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#define DRV_VERSION "1.0"
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static const struct pci_device_id slic_id_tbl[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_ALACRITECH,
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PCI_DEVICE_ID_ALACRITECH_MOJAVE) },
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{ PCI_DEVICE(PCI_VENDOR_ID_ALACRITECH,
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PCI_DEVICE_ID_ALACRITECH_OASIS) },
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{ 0 }
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};
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static const char slic_stats_strings[][ETH_GSTRING_LEN] = {
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"rx_packets",
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"rx_bytes",
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"rx_multicasts",
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"rx_errors",
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"rx_buff_miss",
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"rx_tp_csum",
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"rx_tp_oflow",
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"rx_tp_hlen",
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"rx_ip_csum",
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"rx_ip_len",
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"rx_ip_hdr_len",
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"rx_early",
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"rx_buff_oflow",
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"rx_lcode",
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"rx_drbl",
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"rx_crc",
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"rx_oflow_802",
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"rx_uflow_802",
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"tx_packets",
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"tx_bytes",
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"tx_carrier",
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"tx_dropped",
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"irq_errs",
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};
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static inline int slic_next_queue_idx(unsigned int idx, unsigned int qlen)
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{
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return (idx + 1) & (qlen - 1);
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}
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static inline int slic_get_free_queue_descs(unsigned int put_idx,
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unsigned int done_idx,
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unsigned int qlen)
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{
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if (put_idx >= done_idx)
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return (qlen - (put_idx - done_idx) - 1);
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return (done_idx - put_idx - 1);
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}
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static unsigned int slic_next_compl_idx(struct slic_device *sdev)
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{
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struct slic_stat_queue *stq = &sdev->stq;
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unsigned int active = stq->active_array;
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struct slic_stat_desc *descs;
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struct slic_stat_desc *stat;
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unsigned int idx;
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descs = stq->descs[active];
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stat = &descs[stq->done_idx];
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if (!stat->status)
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return SLIC_INVALID_STAT_DESC_IDX;
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idx = (le32_to_cpu(stat->hnd) & 0xffff) - 1;
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/* reset desc */
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stat->hnd = 0;
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stat->status = 0;
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stq->done_idx = slic_next_queue_idx(stq->done_idx, stq->len);
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/* check for wraparound */
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if (!stq->done_idx) {
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dma_addr_t paddr = stq->paddr[active];
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slic_write(sdev, SLIC_REG_RBAR, lower_32_bits(paddr) |
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stq->len);
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/* make sure new status descriptors are immediately available */
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slic_flush_write(sdev);
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active++;
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active &= (SLIC_NUM_STAT_DESC_ARRAYS - 1);
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stq->active_array = active;
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}
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return idx;
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}
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static unsigned int slic_get_free_tx_descs(struct slic_tx_queue *txq)
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{
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/* ensure tail idx is updated */
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smp_mb();
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return slic_get_free_queue_descs(txq->put_idx, txq->done_idx, txq->len);
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}
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static unsigned int slic_get_free_rx_descs(struct slic_rx_queue *rxq)
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{
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return slic_get_free_queue_descs(rxq->put_idx, rxq->done_idx, rxq->len);
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}
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static void slic_clear_upr_list(struct slic_upr_list *upr_list)
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{
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struct slic_upr *upr;
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struct slic_upr *tmp;
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spin_lock_bh(&upr_list->lock);
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list_for_each_entry_safe(upr, tmp, &upr_list->list, list) {
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list_del(&upr->list);
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kfree(upr);
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}
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upr_list->pending = false;
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spin_unlock_bh(&upr_list->lock);
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}
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static void slic_start_upr(struct slic_device *sdev, struct slic_upr *upr)
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{
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u32 reg;
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reg = (upr->type == SLIC_UPR_CONFIG) ? SLIC_REG_RCONFIG :
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SLIC_REG_LSTAT;
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slic_write(sdev, reg, lower_32_bits(upr->paddr));
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slic_flush_write(sdev);
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}
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static void slic_queue_upr(struct slic_device *sdev, struct slic_upr *upr)
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{
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struct slic_upr_list *upr_list = &sdev->upr_list;
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bool pending;
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spin_lock_bh(&upr_list->lock);
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pending = upr_list->pending;
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INIT_LIST_HEAD(&upr->list);
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list_add_tail(&upr->list, &upr_list->list);
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upr_list->pending = true;
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spin_unlock_bh(&upr_list->lock);
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if (!pending)
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slic_start_upr(sdev, upr);
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}
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static struct slic_upr *slic_dequeue_upr(struct slic_device *sdev)
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{
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struct slic_upr_list *upr_list = &sdev->upr_list;
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struct slic_upr *next_upr = NULL;
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struct slic_upr *upr = NULL;
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spin_lock_bh(&upr_list->lock);
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if (!list_empty(&upr_list->list)) {
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upr = list_first_entry(&upr_list->list, struct slic_upr, list);
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list_del(&upr->list);
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if (list_empty(&upr_list->list))
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upr_list->pending = false;
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else
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next_upr = list_first_entry(&upr_list->list,
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struct slic_upr, list);
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}
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spin_unlock_bh(&upr_list->lock);
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/* trigger processing of the next upr in list */
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if (next_upr)
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slic_start_upr(sdev, next_upr);
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return upr;
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}
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static int slic_new_upr(struct slic_device *sdev, unsigned int type,
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dma_addr_t paddr)
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{
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struct slic_upr *upr;
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upr = kmalloc(sizeof(*upr), GFP_ATOMIC);
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if (!upr)
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return -ENOMEM;
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upr->type = type;
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upr->paddr = paddr;
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slic_queue_upr(sdev, upr);
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return 0;
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}
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static void slic_set_mcast_bit(u64 *mcmask, unsigned char const *addr)
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{
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u64 mask = *mcmask;
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u8 crc;
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/* Get the CRC polynomial for the mac address: we use bits 1-8 (lsb),
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* bitwise reversed, msb (= lsb bit 0 before bitrev) is automatically
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* discarded.
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*/
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crc = ether_crc(ETH_ALEN, addr) >> 23;
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/* we only have space on the SLIC for 64 entries */
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crc &= 0x3F;
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mask |= (u64)1 << crc;
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*mcmask = mask;
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}
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/* must be called with link_lock held */
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static void slic_configure_rcv(struct slic_device *sdev)
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{
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u32 val;
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val = SLIC_GRCR_RESET | SLIC_GRCR_ADDRAEN | SLIC_GRCR_RCVEN |
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SLIC_GRCR_HASHSIZE << SLIC_GRCR_HASHSIZE_SHIFT | SLIC_GRCR_RCVBAD;
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if (sdev->duplex == DUPLEX_FULL)
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val |= SLIC_GRCR_CTLEN;
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if (sdev->promisc)
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val |= SLIC_GRCR_RCVALL;
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slic_write(sdev, SLIC_REG_WRCFG, val);
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}
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/* must be called with link_lock held */
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static void slic_configure_xmt(struct slic_device *sdev)
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{
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u32 val;
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val = SLIC_GXCR_RESET | SLIC_GXCR_XMTEN;
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if (sdev->duplex == DUPLEX_FULL)
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val |= SLIC_GXCR_PAUSEEN;
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slic_write(sdev, SLIC_REG_WXCFG, val);
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}
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/* must be called with link_lock held */
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static void slic_configure_mac(struct slic_device *sdev)
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{
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u32 val;
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if (sdev->speed == SPEED_1000) {
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val = SLIC_GMCR_GAPBB_1000 << SLIC_GMCR_GAPBB_SHIFT |
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SLIC_GMCR_GAPR1_1000 << SLIC_GMCR_GAPR1_SHIFT |
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SLIC_GMCR_GAPR2_1000 << SLIC_GMCR_GAPR2_SHIFT |
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SLIC_GMCR_GBIT; /* enable GMII */
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} else {
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val = SLIC_GMCR_GAPBB_100 << SLIC_GMCR_GAPBB_SHIFT |
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SLIC_GMCR_GAPR1_100 << SLIC_GMCR_GAPR1_SHIFT |
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SLIC_GMCR_GAPR2_100 << SLIC_GMCR_GAPR2_SHIFT;
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}
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if (sdev->duplex == DUPLEX_FULL)
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val |= SLIC_GMCR_FULLD;
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slic_write(sdev, SLIC_REG_WMCFG, val);
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}
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static void slic_configure_link_locked(struct slic_device *sdev, int speed,
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unsigned int duplex)
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{
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struct net_device *dev = sdev->netdev;
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if (sdev->speed == speed && sdev->duplex == duplex)
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return;
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sdev->speed = speed;
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sdev->duplex = duplex;
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if (sdev->speed == SPEED_UNKNOWN) {
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if (netif_carrier_ok(dev))
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netif_carrier_off(dev);
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} else {
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/* (re)configure link settings */
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slic_configure_mac(sdev);
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slic_configure_xmt(sdev);
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slic_configure_rcv(sdev);
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slic_flush_write(sdev);
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if (!netif_carrier_ok(dev))
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netif_carrier_on(dev);
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}
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}
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static void slic_configure_link(struct slic_device *sdev, int speed,
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unsigned int duplex)
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{
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spin_lock_bh(&sdev->link_lock);
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slic_configure_link_locked(sdev, speed, duplex);
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spin_unlock_bh(&sdev->link_lock);
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}
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static void slic_set_rx_mode(struct net_device *dev)
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{
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struct slic_device *sdev = netdev_priv(dev);
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struct netdev_hw_addr *hwaddr;
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bool set_promisc;
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u64 mcmask;
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if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
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/* Turn on all multicast addresses. We have to do this for
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* promiscuous mode as well as ALLMCAST mode (it saves the
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* microcode from having to keep state about the MAC
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* configuration).
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*/
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mcmask = ~(u64)0;
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} else {
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mcmask = 0;
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netdev_for_each_mc_addr(hwaddr, dev) {
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slic_set_mcast_bit(&mcmask, hwaddr->addr);
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}
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}
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slic_write(sdev, SLIC_REG_MCASTLOW, lower_32_bits(mcmask));
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slic_write(sdev, SLIC_REG_MCASTHIGH, upper_32_bits(mcmask));
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set_promisc = !!(dev->flags & IFF_PROMISC);
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spin_lock_bh(&sdev->link_lock);
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if (sdev->promisc != set_promisc) {
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sdev->promisc = set_promisc;
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slic_configure_rcv(sdev);
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}
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spin_unlock_bh(&sdev->link_lock);
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}
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static void slic_xmit_complete(struct slic_device *sdev)
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{
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struct slic_tx_queue *txq = &sdev->txq;
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struct net_device *dev = sdev->netdev;
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struct slic_tx_buffer *buff;
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unsigned int frames = 0;
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unsigned int bytes = 0;
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unsigned int idx;
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/* Limit processing to SLIC_MAX_TX_COMPLETIONS frames to avoid that new
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* completions during processing keeps the loop running endlessly.
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*/
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do {
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idx = slic_next_compl_idx(sdev);
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if (idx == SLIC_INVALID_STAT_DESC_IDX)
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break;
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txq->done_idx = idx;
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buff = &txq->txbuffs[idx];
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if (unlikely(!buff->skb)) {
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netdev_warn(dev,
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"no skb found for desc idx %i\n", idx);
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continue;
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}
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dma_unmap_single(&sdev->pdev->dev,
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dma_unmap_addr(buff, map_addr),
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dma_unmap_len(buff, map_len), DMA_TO_DEVICE);
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bytes += buff->skb->len;
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frames++;
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dev_kfree_skb_any(buff->skb);
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buff->skb = NULL;
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} while (frames < SLIC_MAX_TX_COMPLETIONS);
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/* make sure xmit sees the new value for done_idx */
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smp_wmb();
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u64_stats_update_begin(&sdev->stats.syncp);
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sdev->stats.tx_bytes += bytes;
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sdev->stats.tx_packets += frames;
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u64_stats_update_end(&sdev->stats.syncp);
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netif_tx_lock(dev);
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if (netif_queue_stopped(dev) &&
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(slic_get_free_tx_descs(txq) >= SLIC_MIN_TX_WAKEUP_DESCS))
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netif_wake_queue(dev);
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netif_tx_unlock(dev);
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}
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static void slic_refill_rx_queue(struct slic_device *sdev, gfp_t gfp)
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{
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const unsigned int ALIGN_MASK = SLIC_RX_BUFF_ALIGN - 1;
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unsigned int maplen = SLIC_RX_BUFF_SIZE;
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struct slic_rx_queue *rxq = &sdev->rxq;
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struct net_device *dev = sdev->netdev;
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struct slic_rx_buffer *buff;
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struct slic_rx_desc *desc;
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unsigned int misalign;
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unsigned int offset;
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struct sk_buff *skb;
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dma_addr_t paddr;
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while (slic_get_free_rx_descs(rxq) > SLIC_MAX_REQ_RX_DESCS) {
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skb = alloc_skb(maplen + ALIGN_MASK, gfp);
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if (!skb)
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break;
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paddr = dma_map_single(&sdev->pdev->dev, skb->data, maplen,
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DMA_FROM_DEVICE);
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if (dma_mapping_error(&sdev->pdev->dev, paddr)) {
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netdev_err(dev, "mapping rx packet failed\n");
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/* drop skb */
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dev_kfree_skb_any(skb);
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break;
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}
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/* ensure head buffer descriptors are 256 byte aligned */
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offset = 0;
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misalign = paddr & ALIGN_MASK;
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if (misalign) {
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offset = SLIC_RX_BUFF_ALIGN - misalign;
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skb_reserve(skb, offset);
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}
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/* the HW expects dma chunks for descriptor + frame data */
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desc = (struct slic_rx_desc *)skb->data;
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/* temporarily sync descriptor for CPU to clear status */
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dma_sync_single_for_cpu(&sdev->pdev->dev, paddr,
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offset + sizeof(*desc),
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DMA_FROM_DEVICE);
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desc->status = 0;
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/* return it to HW again */
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dma_sync_single_for_device(&sdev->pdev->dev, paddr,
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offset + sizeof(*desc),
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DMA_FROM_DEVICE);
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buff = &rxq->rxbuffs[rxq->put_idx];
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buff->skb = skb;
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dma_unmap_addr_set(buff, map_addr, paddr);
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dma_unmap_len_set(buff, map_len, maplen);
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buff->addr_offset = offset;
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/* complete write to descriptor before it is handed to HW */
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wmb();
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/* head buffer descriptors are placed immediately before skb */
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slic_write(sdev, SLIC_REG_HBAR, lower_32_bits(paddr) + offset);
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rxq->put_idx = slic_next_queue_idx(rxq->put_idx, rxq->len);
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}
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}
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static void slic_handle_frame_error(struct slic_device *sdev,
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struct sk_buff *skb)
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{
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struct slic_stats *stats = &sdev->stats;
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if (sdev->model == SLIC_MODEL_OASIS) {
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struct slic_rx_info_oasis *info;
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u32 status_b;
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u32 status;
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info = (struct slic_rx_info_oasis *)skb->data;
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status = le32_to_cpu(info->frame_status);
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status_b = le32_to_cpu(info->frame_status_b);
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/* transport layer */
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if (status_b & SLIC_VRHSTATB_TPCSUM)
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SLIC_INC_STATS_COUNTER(stats, rx_tpcsum);
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if (status & SLIC_VRHSTAT_TPOFLO)
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SLIC_INC_STATS_COUNTER(stats, rx_tpoflow);
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if (status_b & SLIC_VRHSTATB_TPHLEN)
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SLIC_INC_STATS_COUNTER(stats, rx_tphlen);
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/* ip layer */
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if (status_b & SLIC_VRHSTATB_IPCSUM)
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SLIC_INC_STATS_COUNTER(stats, rx_ipcsum);
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if (status_b & SLIC_VRHSTATB_IPLERR)
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SLIC_INC_STATS_COUNTER(stats, rx_iplen);
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if (status_b & SLIC_VRHSTATB_IPHERR)
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SLIC_INC_STATS_COUNTER(stats, rx_iphlen);
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/* link layer */
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if (status_b & SLIC_VRHSTATB_RCVE)
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SLIC_INC_STATS_COUNTER(stats, rx_early);
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if (status_b & SLIC_VRHSTATB_BUFF)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_buffoflow);
|
|
if (status_b & SLIC_VRHSTATB_CODE)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_lcode);
|
|
if (status_b & SLIC_VRHSTATB_DRBL)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_drbl);
|
|
if (status_b & SLIC_VRHSTATB_CRC)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_crc);
|
|
if (status & SLIC_VRHSTAT_802OE)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_oflow802);
|
|
if (status_b & SLIC_VRHSTATB_802UE)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_uflow802);
|
|
if (status_b & SLIC_VRHSTATB_CARRE)
|
|
SLIC_INC_STATS_COUNTER(stats, tx_carrier);
|
|
} else { /* mojave */
|
|
struct slic_rx_info_mojave *info;
|
|
u32 status;
|
|
|
|
info = (struct slic_rx_info_mojave *)skb->data;
|
|
status = le32_to_cpu(info->frame_status);
|
|
/* transport layer */
|
|
if (status & SLIC_VGBSTAT_XPERR) {
|
|
u32 xerr = status >> SLIC_VGBSTAT_XERRSHFT;
|
|
|
|
if (xerr == SLIC_VGBSTAT_XCSERR)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_tpcsum);
|
|
if (xerr == SLIC_VGBSTAT_XUFLOW)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_tpoflow);
|
|
if (xerr == SLIC_VGBSTAT_XHLEN)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_tphlen);
|
|
}
|
|
/* ip layer */
|
|
if (status & SLIC_VGBSTAT_NETERR) {
|
|
u32 nerr = status >> SLIC_VGBSTAT_NERRSHFT &
|
|
SLIC_VGBSTAT_NERRMSK;
|
|
|
|
if (nerr == SLIC_VGBSTAT_NCSERR)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_ipcsum);
|
|
if (nerr == SLIC_VGBSTAT_NUFLOW)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_iplen);
|
|
if (nerr == SLIC_VGBSTAT_NHLEN)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_iphlen);
|
|
}
|
|
/* link layer */
|
|
if (status & SLIC_VGBSTAT_LNKERR) {
|
|
u32 lerr = status & SLIC_VGBSTAT_LERRMSK;
|
|
|
|
if (lerr == SLIC_VGBSTAT_LDEARLY)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_early);
|
|
if (lerr == SLIC_VGBSTAT_LBOFLO)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_buffoflow);
|
|
if (lerr == SLIC_VGBSTAT_LCODERR)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_lcode);
|
|
if (lerr == SLIC_VGBSTAT_LDBLNBL)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_drbl);
|
|
if (lerr == SLIC_VGBSTAT_LCRCERR)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_crc);
|
|
if (lerr == SLIC_VGBSTAT_LOFLO)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_oflow802);
|
|
if (lerr == SLIC_VGBSTAT_LUFLO)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_uflow802);
|
|
}
|
|
}
|
|
SLIC_INC_STATS_COUNTER(stats, rx_errors);
|
|
}
|
|
|
|
static void slic_handle_receive(struct slic_device *sdev, unsigned int todo,
|
|
unsigned int *done)
|
|
{
|
|
struct slic_rx_queue *rxq = &sdev->rxq;
|
|
struct net_device *dev = sdev->netdev;
|
|
struct slic_rx_buffer *buff;
|
|
struct slic_rx_desc *desc;
|
|
unsigned int frames = 0;
|
|
unsigned int bytes = 0;
|
|
struct sk_buff *skb;
|
|
u32 status;
|
|
u32 len;
|
|
|
|
while (todo && (rxq->done_idx != rxq->put_idx)) {
|
|
buff = &rxq->rxbuffs[rxq->done_idx];
|
|
|
|
skb = buff->skb;
|
|
if (!skb)
|
|
break;
|
|
|
|
desc = (struct slic_rx_desc *)skb->data;
|
|
|
|
dma_sync_single_for_cpu(&sdev->pdev->dev,
|
|
dma_unmap_addr(buff, map_addr),
|
|
buff->addr_offset + sizeof(*desc),
|
|
DMA_FROM_DEVICE);
|
|
|
|
status = le32_to_cpu(desc->status);
|
|
if (!(status & SLIC_IRHDDR_SVALID)) {
|
|
dma_sync_single_for_device(&sdev->pdev->dev,
|
|
dma_unmap_addr(buff,
|
|
map_addr),
|
|
buff->addr_offset +
|
|
sizeof(*desc),
|
|
DMA_FROM_DEVICE);
|
|
break;
|
|
}
|
|
|
|
buff->skb = NULL;
|
|
|
|
dma_unmap_single(&sdev->pdev->dev,
|
|
dma_unmap_addr(buff, map_addr),
|
|
dma_unmap_len(buff, map_len),
|
|
DMA_FROM_DEVICE);
|
|
|
|
/* skip rx descriptor that is placed before the frame data */
|
|
skb_reserve(skb, SLIC_RX_BUFF_HDR_SIZE);
|
|
|
|
if (unlikely(status & SLIC_IRHDDR_ERR)) {
|
|
slic_handle_frame_error(sdev, skb);
|
|
dev_kfree_skb_any(skb);
|
|
} else {
|
|
struct ethhdr *eh = (struct ethhdr *)skb->data;
|
|
|
|
if (is_multicast_ether_addr(eh->h_dest))
|
|
SLIC_INC_STATS_COUNTER(&sdev->stats, rx_mcasts);
|
|
|
|
len = le32_to_cpu(desc->length) & SLIC_IRHDDR_FLEN_MSK;
|
|
skb_put(skb, len);
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
|
|
napi_gro_receive(&sdev->napi, skb);
|
|
|
|
bytes += len;
|
|
frames++;
|
|
}
|
|
rxq->done_idx = slic_next_queue_idx(rxq->done_idx, rxq->len);
|
|
todo--;
|
|
}
|
|
|
|
u64_stats_update_begin(&sdev->stats.syncp);
|
|
sdev->stats.rx_bytes += bytes;
|
|
sdev->stats.rx_packets += frames;
|
|
u64_stats_update_end(&sdev->stats.syncp);
|
|
|
|
slic_refill_rx_queue(sdev, GFP_ATOMIC);
|
|
}
|
|
|
|
static void slic_handle_link_irq(struct slic_device *sdev)
|
|
{
|
|
struct slic_shmem *sm = &sdev->shmem;
|
|
struct slic_shmem_data *sm_data = sm->shmem_data;
|
|
unsigned int duplex;
|
|
int speed;
|
|
u32 link;
|
|
|
|
link = le32_to_cpu(sm_data->link);
|
|
|
|
if (link & SLIC_GIG_LINKUP) {
|
|
if (link & SLIC_GIG_SPEED_1000)
|
|
speed = SPEED_1000;
|
|
else if (link & SLIC_GIG_SPEED_100)
|
|
speed = SPEED_100;
|
|
else
|
|
speed = SPEED_10;
|
|
|
|
duplex = (link & SLIC_GIG_FULLDUPLEX) ? DUPLEX_FULL :
|
|
DUPLEX_HALF;
|
|
} else {
|
|
duplex = DUPLEX_UNKNOWN;
|
|
speed = SPEED_UNKNOWN;
|
|
}
|
|
slic_configure_link(sdev, speed, duplex);
|
|
}
|
|
|
|
static void slic_handle_upr_irq(struct slic_device *sdev, u32 irqs)
|
|
{
|
|
struct slic_upr *upr;
|
|
|
|
/* remove upr that caused this irq (always the first entry in list) */
|
|
upr = slic_dequeue_upr(sdev);
|
|
if (!upr) {
|
|
netdev_warn(sdev->netdev, "no upr found on list\n");
|
|
return;
|
|
}
|
|
|
|
if (upr->type == SLIC_UPR_LSTAT) {
|
|
if (unlikely(irqs & SLIC_ISR_UPCERR_MASK)) {
|
|
/* try again */
|
|
slic_queue_upr(sdev, upr);
|
|
return;
|
|
}
|
|
slic_handle_link_irq(sdev);
|
|
}
|
|
kfree(upr);
|
|
}
|
|
|
|
static int slic_handle_link_change(struct slic_device *sdev)
|
|
{
|
|
return slic_new_upr(sdev, SLIC_UPR_LSTAT, sdev->shmem.link_paddr);
|
|
}
|
|
|
|
static void slic_handle_err_irq(struct slic_device *sdev, u32 isr)
|
|
{
|
|
struct slic_stats *stats = &sdev->stats;
|
|
|
|
if (isr & SLIC_ISR_RMISS)
|
|
SLIC_INC_STATS_COUNTER(stats, rx_buff_miss);
|
|
if (isr & SLIC_ISR_XDROP)
|
|
SLIC_INC_STATS_COUNTER(stats, tx_dropped);
|
|
if (!(isr & (SLIC_ISR_RMISS | SLIC_ISR_XDROP)))
|
|
SLIC_INC_STATS_COUNTER(stats, irq_errs);
|
|
}
|
|
|
|
static void slic_handle_irq(struct slic_device *sdev, u32 isr,
|
|
unsigned int todo, unsigned int *done)
|
|
{
|
|
if (isr & SLIC_ISR_ERR)
|
|
slic_handle_err_irq(sdev, isr);
|
|
|
|
if (isr & SLIC_ISR_LEVENT)
|
|
slic_handle_link_change(sdev);
|
|
|
|
if (isr & SLIC_ISR_UPC_MASK)
|
|
slic_handle_upr_irq(sdev, isr);
|
|
|
|
if (isr & SLIC_ISR_RCV)
|
|
slic_handle_receive(sdev, todo, done);
|
|
|
|
if (isr & SLIC_ISR_CMD)
|
|
slic_xmit_complete(sdev);
|
|
}
|
|
|
|
static int slic_poll(struct napi_struct *napi, int todo)
|
|
{
|
|
struct slic_device *sdev = container_of(napi, struct slic_device, napi);
|
|
struct slic_shmem *sm = &sdev->shmem;
|
|
struct slic_shmem_data *sm_data = sm->shmem_data;
|
|
u32 isr = le32_to_cpu(sm_data->isr);
|
|
int done = 0;
|
|
|
|
slic_handle_irq(sdev, isr, todo, &done);
|
|
|
|
if (done < todo) {
|
|
napi_complete_done(napi, done);
|
|
/* reenable irqs */
|
|
sm_data->isr = 0;
|
|
/* make sure sm_data->isr is cleard before irqs are reenabled */
|
|
wmb();
|
|
slic_write(sdev, SLIC_REG_ISR, 0);
|
|
slic_flush_write(sdev);
|
|
}
|
|
|
|
return done;
|
|
}
|
|
|
|
static irqreturn_t slic_irq(int irq, void *dev_id)
|
|
{
|
|
struct slic_device *sdev = dev_id;
|
|
struct slic_shmem *sm = &sdev->shmem;
|
|
struct slic_shmem_data *sm_data = sm->shmem_data;
|
|
|
|
slic_write(sdev, SLIC_REG_ICR, SLIC_ICR_INT_MASK);
|
|
slic_flush_write(sdev);
|
|
/* make sure sm_data->isr is read after ICR_INT_MASK is set */
|
|
wmb();
|
|
|
|
if (!sm_data->isr) {
|
|
dma_rmb();
|
|
/* spurious interrupt */
|
|
slic_write(sdev, SLIC_REG_ISR, 0);
|
|
slic_flush_write(sdev);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
napi_schedule_irqoff(&sdev->napi);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void slic_card_reset(struct slic_device *sdev)
|
|
{
|
|
u16 cmd;
|
|
|
|
slic_write(sdev, SLIC_REG_RESET, SLIC_RESET_MAGIC);
|
|
/* flush write by means of config space */
|
|
pci_read_config_word(sdev->pdev, PCI_COMMAND, &cmd);
|
|
mdelay(1);
|
|
}
|
|
|
|
static int slic_init_stat_queue(struct slic_device *sdev)
|
|
{
|
|
const unsigned int DESC_ALIGN_MASK = SLIC_STATS_DESC_ALIGN - 1;
|
|
struct slic_stat_queue *stq = &sdev->stq;
|
|
struct slic_stat_desc *descs;
|
|
unsigned int misalign;
|
|
unsigned int offset;
|
|
dma_addr_t paddr;
|
|
size_t size;
|
|
int err;
|
|
int i;
|
|
|
|
stq->len = SLIC_NUM_STAT_DESCS;
|
|
stq->active_array = 0;
|
|
stq->done_idx = 0;
|
|
|
|
size = stq->len * sizeof(*descs) + DESC_ALIGN_MASK;
|
|
|
|
for (i = 0; i < SLIC_NUM_STAT_DESC_ARRAYS; i++) {
|
|
descs = dma_alloc_coherent(&sdev->pdev->dev, size, &paddr,
|
|
GFP_KERNEL);
|
|
if (!descs) {
|
|
netdev_err(sdev->netdev,
|
|
"failed to allocate status descriptors\n");
|
|
err = -ENOMEM;
|
|
goto free_descs;
|
|
}
|
|
/* ensure correct alignment */
|
|
offset = 0;
|
|
misalign = paddr & DESC_ALIGN_MASK;
|
|
if (misalign) {
|
|
offset = SLIC_STATS_DESC_ALIGN - misalign;
|
|
descs += offset;
|
|
paddr += offset;
|
|
}
|
|
|
|
slic_write(sdev, SLIC_REG_RBAR, lower_32_bits(paddr) |
|
|
stq->len);
|
|
stq->descs[i] = descs;
|
|
stq->paddr[i] = paddr;
|
|
stq->addr_offset[i] = offset;
|
|
}
|
|
|
|
stq->mem_size = size;
|
|
|
|
return 0;
|
|
|
|
free_descs:
|
|
while (i--) {
|
|
dma_free_coherent(&sdev->pdev->dev, stq->mem_size,
|
|
stq->descs[i] - stq->addr_offset[i],
|
|
stq->paddr[i] - stq->addr_offset[i]);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void slic_free_stat_queue(struct slic_device *sdev)
|
|
{
|
|
struct slic_stat_queue *stq = &sdev->stq;
|
|
int i;
|
|
|
|
for (i = 0; i < SLIC_NUM_STAT_DESC_ARRAYS; i++) {
|
|
dma_free_coherent(&sdev->pdev->dev, stq->mem_size,
|
|
stq->descs[i] - stq->addr_offset[i],
|
|
stq->paddr[i] - stq->addr_offset[i]);
|
|
}
|
|
}
|
|
|
|
static int slic_init_tx_queue(struct slic_device *sdev)
|
|
{
|
|
struct slic_tx_queue *txq = &sdev->txq;
|
|
struct slic_tx_buffer *buff;
|
|
struct slic_tx_desc *desc;
|
|
unsigned int i;
|
|
int err;
|
|
|
|
txq->len = SLIC_NUM_TX_DESCS;
|
|
txq->put_idx = 0;
|
|
txq->done_idx = 0;
|
|
|
|
txq->txbuffs = kcalloc(txq->len, sizeof(*buff), GFP_KERNEL);
|
|
if (!txq->txbuffs)
|
|
return -ENOMEM;
|
|
|
|
txq->dma_pool = dma_pool_create("slic_pool", &sdev->pdev->dev,
|
|
sizeof(*desc), SLIC_TX_DESC_ALIGN,
|
|
4096);
|
|
if (!txq->dma_pool) {
|
|
err = -ENOMEM;
|
|
netdev_err(sdev->netdev, "failed to create dma pool\n");
|
|
goto free_buffs;
|
|
}
|
|
|
|
for (i = 0; i < txq->len; i++) {
|
|
buff = &txq->txbuffs[i];
|
|
desc = dma_pool_zalloc(txq->dma_pool, GFP_KERNEL,
|
|
&buff->desc_paddr);
|
|
if (!desc) {
|
|
netdev_err(sdev->netdev,
|
|
"failed to alloc pool chunk (%i)\n", i);
|
|
err = -ENOMEM;
|
|
goto free_descs;
|
|
}
|
|
|
|
desc->hnd = cpu_to_le32((u32)(i + 1));
|
|
desc->cmd = SLIC_CMD_XMT_REQ;
|
|
desc->flags = 0;
|
|
desc->type = cpu_to_le32(SLIC_CMD_TYPE_DUMB);
|
|
buff->desc = desc;
|
|
}
|
|
|
|
return 0;
|
|
|
|
free_descs:
|
|
while (i--) {
|
|
buff = &txq->txbuffs[i];
|
|
dma_pool_free(txq->dma_pool, buff->desc, buff->desc_paddr);
|
|
}
|
|
dma_pool_destroy(txq->dma_pool);
|
|
|
|
free_buffs:
|
|
kfree(txq->txbuffs);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void slic_free_tx_queue(struct slic_device *sdev)
|
|
{
|
|
struct slic_tx_queue *txq = &sdev->txq;
|
|
struct slic_tx_buffer *buff;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < txq->len; i++) {
|
|
buff = &txq->txbuffs[i];
|
|
dma_pool_free(txq->dma_pool, buff->desc, buff->desc_paddr);
|
|
if (!buff->skb)
|
|
continue;
|
|
|
|
dma_unmap_single(&sdev->pdev->dev,
|
|
dma_unmap_addr(buff, map_addr),
|
|
dma_unmap_len(buff, map_len), DMA_TO_DEVICE);
|
|
consume_skb(buff->skb);
|
|
}
|
|
dma_pool_destroy(txq->dma_pool);
|
|
|
|
kfree(txq->txbuffs);
|
|
}
|
|
|
|
static int slic_init_rx_queue(struct slic_device *sdev)
|
|
{
|
|
struct slic_rx_queue *rxq = &sdev->rxq;
|
|
struct slic_rx_buffer *buff;
|
|
|
|
rxq->len = SLIC_NUM_RX_LES;
|
|
rxq->done_idx = 0;
|
|
rxq->put_idx = 0;
|
|
|
|
buff = kcalloc(rxq->len, sizeof(*buff), GFP_KERNEL);
|
|
if (!buff)
|
|
return -ENOMEM;
|
|
|
|
rxq->rxbuffs = buff;
|
|
slic_refill_rx_queue(sdev, GFP_KERNEL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void slic_free_rx_queue(struct slic_device *sdev)
|
|
{
|
|
struct slic_rx_queue *rxq = &sdev->rxq;
|
|
struct slic_rx_buffer *buff;
|
|
unsigned int i;
|
|
|
|
/* free rx buffers */
|
|
for (i = 0; i < rxq->len; i++) {
|
|
buff = &rxq->rxbuffs[i];
|
|
|
|
if (!buff->skb)
|
|
continue;
|
|
|
|
dma_unmap_single(&sdev->pdev->dev,
|
|
dma_unmap_addr(buff, map_addr),
|
|
dma_unmap_len(buff, map_len),
|
|
DMA_FROM_DEVICE);
|
|
consume_skb(buff->skb);
|
|
}
|
|
kfree(rxq->rxbuffs);
|
|
}
|
|
|
|
static void slic_set_link_autoneg(struct slic_device *sdev)
|
|
{
|
|
unsigned int subid = sdev->pdev->subsystem_device;
|
|
u32 val;
|
|
|
|
if (sdev->is_fiber) {
|
|
/* We've got a fiber gigabit interface, and register 4 is
|
|
* different in fiber mode than in copper mode.
|
|
*/
|
|
/* advertise FD only @1000 Mb */
|
|
val = MII_ADVERTISE << 16 | ADVERTISE_1000XFULL |
|
|
ADVERTISE_1000XPAUSE | ADVERTISE_1000XPSE_ASYM;
|
|
/* enable PAUSE frames */
|
|
slic_write(sdev, SLIC_REG_WPHY, val);
|
|
/* reset phy, enable auto-neg */
|
|
val = MII_BMCR << 16 | BMCR_RESET | BMCR_ANENABLE |
|
|
BMCR_ANRESTART;
|
|
slic_write(sdev, SLIC_REG_WPHY, val);
|
|
} else { /* copper gigabit */
|
|
/* We've got a copper gigabit interface, and register 4 is
|
|
* different in copper mode than in fiber mode.
|
|
*/
|
|
/* advertise 10/100 Mb modes */
|
|
val = MII_ADVERTISE << 16 | ADVERTISE_100FULL |
|
|
ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF;
|
|
/* enable PAUSE frames */
|
|
val |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
|
|
/* required by the Cicada PHY */
|
|
val |= ADVERTISE_CSMA;
|
|
slic_write(sdev, SLIC_REG_WPHY, val);
|
|
|
|
/* advertise FD only @1000 Mb */
|
|
val = MII_CTRL1000 << 16 | ADVERTISE_1000FULL;
|
|
slic_write(sdev, SLIC_REG_WPHY, val);
|
|
|
|
if (subid != PCI_SUBDEVICE_ID_ALACRITECH_CICADA) {
|
|
/* if a Marvell PHY enable auto crossover */
|
|
val = SLIC_MIICR_REG_16 | SLIC_MRV_REG16_XOVERON;
|
|
slic_write(sdev, SLIC_REG_WPHY, val);
|
|
|
|
/* reset phy, enable auto-neg */
|
|
val = MII_BMCR << 16 | BMCR_RESET | BMCR_ANENABLE |
|
|
BMCR_ANRESTART;
|
|
slic_write(sdev, SLIC_REG_WPHY, val);
|
|
} else {
|
|
/* enable and restart auto-neg (don't reset) */
|
|
val = MII_BMCR << 16 | BMCR_ANENABLE | BMCR_ANRESTART;
|
|
slic_write(sdev, SLIC_REG_WPHY, val);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void slic_set_mac_address(struct slic_device *sdev)
|
|
{
|
|
u8 *addr = sdev->netdev->dev_addr;
|
|
u32 val;
|
|
|
|
val = addr[5] | addr[4] << 8 | addr[3] << 16 | addr[2] << 24;
|
|
|
|
slic_write(sdev, SLIC_REG_WRADDRAL, val);
|
|
slic_write(sdev, SLIC_REG_WRADDRBL, val);
|
|
|
|
val = addr[0] << 8 | addr[1];
|
|
|
|
slic_write(sdev, SLIC_REG_WRADDRAH, val);
|
|
slic_write(sdev, SLIC_REG_WRADDRBH, val);
|
|
slic_flush_write(sdev);
|
|
}
|
|
|
|
static u32 slic_read_dword_from_firmware(const struct firmware *fw, int *offset)
|
|
{
|
|
int idx = *offset;
|
|
__le32 val;
|
|
|
|
memcpy(&val, fw->data + *offset, sizeof(val));
|
|
idx += 4;
|
|
*offset = idx;
|
|
|
|
return le32_to_cpu(val);
|
|
}
|
|
|
|
MODULE_FIRMWARE(SLIC_RCV_FIRMWARE_MOJAVE);
|
|
MODULE_FIRMWARE(SLIC_RCV_FIRMWARE_OASIS);
|
|
|
|
static int slic_load_rcvseq_firmware(struct slic_device *sdev)
|
|
{
|
|
const struct firmware *fw;
|
|
const char *file;
|
|
u32 codelen;
|
|
int idx = 0;
|
|
u32 instr;
|
|
u32 addr;
|
|
int err;
|
|
|
|
file = (sdev->model == SLIC_MODEL_OASIS) ? SLIC_RCV_FIRMWARE_OASIS :
|
|
SLIC_RCV_FIRMWARE_MOJAVE;
|
|
err = request_firmware(&fw, file, &sdev->pdev->dev);
|
|
if (err) {
|
|
dev_err(&sdev->pdev->dev,
|
|
"failed to load receive sequencer firmware %s\n", file);
|
|
return err;
|
|
}
|
|
/* Do an initial sanity check concerning firmware size now. A further
|
|
* check follows below.
|
|
*/
|
|
if (fw->size < SLIC_FIRMWARE_MIN_SIZE) {
|
|
dev_err(&sdev->pdev->dev,
|
|
"invalid firmware size %zu (min %u expected)\n",
|
|
fw->size, SLIC_FIRMWARE_MIN_SIZE);
|
|
err = -EINVAL;
|
|
goto release;
|
|
}
|
|
|
|
codelen = slic_read_dword_from_firmware(fw, &idx);
|
|
|
|
/* do another sanity check against firmware size */
|
|
if ((codelen + 4) > fw->size) {
|
|
dev_err(&sdev->pdev->dev,
|
|
"invalid rcv-sequencer firmware size %zu\n", fw->size);
|
|
err = -EINVAL;
|
|
goto release;
|
|
}
|
|
|
|
/* download sequencer code to card */
|
|
slic_write(sdev, SLIC_REG_RCV_WCS, SLIC_RCVWCS_BEGIN);
|
|
for (addr = 0; addr < codelen; addr++) {
|
|
__le32 val;
|
|
/* write out instruction address */
|
|
slic_write(sdev, SLIC_REG_RCV_WCS, addr);
|
|
|
|
instr = slic_read_dword_from_firmware(fw, &idx);
|
|
/* write out the instruction data low addr */
|
|
slic_write(sdev, SLIC_REG_RCV_WCS, instr);
|
|
|
|
val = (__le32)fw->data[idx];
|
|
instr = le32_to_cpu(val);
|
|
idx++;
|
|
/* write out the instruction data high addr */
|
|
slic_write(sdev, SLIC_REG_RCV_WCS, instr);
|
|
}
|
|
/* finish download */
|
|
slic_write(sdev, SLIC_REG_RCV_WCS, SLIC_RCVWCS_FINISH);
|
|
slic_flush_write(sdev);
|
|
release:
|
|
release_firmware(fw);
|
|
|
|
return err;
|
|
}
|
|
|
|
MODULE_FIRMWARE(SLIC_FIRMWARE_MOJAVE);
|
|
MODULE_FIRMWARE(SLIC_FIRMWARE_OASIS);
|
|
|
|
static int slic_load_firmware(struct slic_device *sdev)
|
|
{
|
|
u32 sectstart[SLIC_FIRMWARE_MAX_SECTIONS];
|
|
u32 sectsize[SLIC_FIRMWARE_MAX_SECTIONS];
|
|
const struct firmware *fw;
|
|
unsigned int datalen;
|
|
const char *file;
|
|
int code_start;
|
|
unsigned int i;
|
|
u32 numsects;
|
|
int idx = 0;
|
|
u32 sect;
|
|
u32 instr;
|
|
u32 addr;
|
|
u32 base;
|
|
int err;
|
|
|
|
file = (sdev->model == SLIC_MODEL_OASIS) ? SLIC_FIRMWARE_OASIS :
|
|
SLIC_FIRMWARE_MOJAVE;
|
|
err = request_firmware(&fw, file, &sdev->pdev->dev);
|
|
if (err) {
|
|
dev_err(&sdev->pdev->dev, "failed to load firmware %s\n", file);
|
|
return err;
|
|
}
|
|
/* Do an initial sanity check concerning firmware size now. A further
|
|
* check follows below.
|
|
*/
|
|
if (fw->size < SLIC_FIRMWARE_MIN_SIZE) {
|
|
dev_err(&sdev->pdev->dev,
|
|
"invalid firmware size %zu (min is %u)\n", fw->size,
|
|
SLIC_FIRMWARE_MIN_SIZE);
|
|
err = -EINVAL;
|
|
goto release;
|
|
}
|
|
|
|
numsects = slic_read_dword_from_firmware(fw, &idx);
|
|
if (numsects == 0 || numsects > SLIC_FIRMWARE_MAX_SECTIONS) {
|
|
dev_err(&sdev->pdev->dev,
|
|
"invalid number of sections in firmware: %u", numsects);
|
|
err = -EINVAL;
|
|
goto release;
|
|
}
|
|
|
|
datalen = numsects * 8 + 4;
|
|
for (i = 0; i < numsects; i++) {
|
|
sectsize[i] = slic_read_dword_from_firmware(fw, &idx);
|
|
datalen += sectsize[i];
|
|
}
|
|
|
|
/* do another sanity check against firmware size */
|
|
if (datalen > fw->size) {
|
|
dev_err(&sdev->pdev->dev,
|
|
"invalid firmware size %zu (expected >= %u)\n",
|
|
fw->size, datalen);
|
|
err = -EINVAL;
|
|
goto release;
|
|
}
|
|
/* get sections */
|
|
for (i = 0; i < numsects; i++)
|
|
sectstart[i] = slic_read_dword_from_firmware(fw, &idx);
|
|
|
|
code_start = idx;
|
|
instr = slic_read_dword_from_firmware(fw, &idx);
|
|
|
|
for (sect = 0; sect < numsects; sect++) {
|
|
unsigned int ssize = sectsize[sect] >> 3;
|
|
|
|
base = sectstart[sect];
|
|
|
|
for (addr = 0; addr < ssize; addr++) {
|
|
/* write out instruction address */
|
|
slic_write(sdev, SLIC_REG_WCS, base + addr);
|
|
/* write out instruction to low addr */
|
|
slic_write(sdev, SLIC_REG_WCS, instr);
|
|
instr = slic_read_dword_from_firmware(fw, &idx);
|
|
/* write out instruction to high addr */
|
|
slic_write(sdev, SLIC_REG_WCS, instr);
|
|
instr = slic_read_dword_from_firmware(fw, &idx);
|
|
}
|
|
}
|
|
|
|
idx = code_start;
|
|
|
|
for (sect = 0; sect < numsects; sect++) {
|
|
unsigned int ssize = sectsize[sect] >> 3;
|
|
|
|
instr = slic_read_dword_from_firmware(fw, &idx);
|
|
base = sectstart[sect];
|
|
if (base < 0x8000)
|
|
continue;
|
|
|
|
for (addr = 0; addr < ssize; addr++) {
|
|
/* write out instruction address */
|
|
slic_write(sdev, SLIC_REG_WCS,
|
|
SLIC_WCS_COMPARE | (base + addr));
|
|
/* write out instruction to low addr */
|
|
slic_write(sdev, SLIC_REG_WCS, instr);
|
|
instr = slic_read_dword_from_firmware(fw, &idx);
|
|
/* write out instruction to high addr */
|
|
slic_write(sdev, SLIC_REG_WCS, instr);
|
|
instr = slic_read_dword_from_firmware(fw, &idx);
|
|
}
|
|
}
|
|
slic_flush_write(sdev);
|
|
mdelay(10);
|
|
/* everything OK, kick off the card */
|
|
slic_write(sdev, SLIC_REG_WCS, SLIC_WCS_START);
|
|
slic_flush_write(sdev);
|
|
/* wait long enough for ucode to init card and reach the mainloop */
|
|
mdelay(20);
|
|
release:
|
|
release_firmware(fw);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int slic_init_shmem(struct slic_device *sdev)
|
|
{
|
|
struct slic_shmem *sm = &sdev->shmem;
|
|
struct slic_shmem_data *sm_data;
|
|
dma_addr_t paddr;
|
|
|
|
sm_data = dma_alloc_coherent(&sdev->pdev->dev, sizeof(*sm_data),
|
|
&paddr, GFP_KERNEL);
|
|
if (!sm_data) {
|
|
dev_err(&sdev->pdev->dev, "failed to allocate shared memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
sm->shmem_data = sm_data;
|
|
sm->isr_paddr = paddr;
|
|
sm->link_paddr = paddr + offsetof(struct slic_shmem_data, link);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void slic_free_shmem(struct slic_device *sdev)
|
|
{
|
|
struct slic_shmem *sm = &sdev->shmem;
|
|
struct slic_shmem_data *sm_data = sm->shmem_data;
|
|
|
|
dma_free_coherent(&sdev->pdev->dev, sizeof(*sm_data), sm_data,
|
|
sm->isr_paddr);
|
|
}
|
|
|
|
static int slic_init_iface(struct slic_device *sdev)
|
|
{
|
|
struct slic_shmem *sm = &sdev->shmem;
|
|
int err;
|
|
|
|
sdev->upr_list.pending = false;
|
|
|
|
err = slic_init_shmem(sdev);
|
|
if (err) {
|
|
netdev_err(sdev->netdev, "failed to init shared memory\n");
|
|
return err;
|
|
}
|
|
|
|
err = slic_load_firmware(sdev);
|
|
if (err) {
|
|
netdev_err(sdev->netdev, "failed to load firmware\n");
|
|
goto free_sm;
|
|
}
|
|
|
|
err = slic_load_rcvseq_firmware(sdev);
|
|
if (err) {
|
|
netdev_err(sdev->netdev,
|
|
"failed to load firmware for receive sequencer\n");
|
|
goto free_sm;
|
|
}
|
|
|
|
slic_write(sdev, SLIC_REG_ICR, SLIC_ICR_INT_OFF);
|
|
slic_flush_write(sdev);
|
|
mdelay(1);
|
|
|
|
err = slic_init_rx_queue(sdev);
|
|
if (err) {
|
|
netdev_err(sdev->netdev, "failed to init rx queue: %u\n", err);
|
|
goto free_sm;
|
|
}
|
|
|
|
err = slic_init_tx_queue(sdev);
|
|
if (err) {
|
|
netdev_err(sdev->netdev, "failed to init tx queue: %u\n", err);
|
|
goto free_rxq;
|
|
}
|
|
|
|
err = slic_init_stat_queue(sdev);
|
|
if (err) {
|
|
netdev_err(sdev->netdev, "failed to init status queue: %u\n",
|
|
err);
|
|
goto free_txq;
|
|
}
|
|
|
|
slic_write(sdev, SLIC_REG_ISP, lower_32_bits(sm->isr_paddr));
|
|
napi_enable(&sdev->napi);
|
|
/* disable irq mitigation */
|
|
slic_write(sdev, SLIC_REG_INTAGG, 0);
|
|
slic_write(sdev, SLIC_REG_ISR, 0);
|
|
slic_flush_write(sdev);
|
|
|
|
slic_set_mac_address(sdev);
|
|
|
|
spin_lock_bh(&sdev->link_lock);
|
|
sdev->duplex = DUPLEX_UNKNOWN;
|
|
sdev->speed = SPEED_UNKNOWN;
|
|
spin_unlock_bh(&sdev->link_lock);
|
|
|
|
slic_set_link_autoneg(sdev);
|
|
|
|
err = request_irq(sdev->pdev->irq, slic_irq, IRQF_SHARED, DRV_NAME,
|
|
sdev);
|
|
if (err) {
|
|
netdev_err(sdev->netdev, "failed to request irq: %u\n", err);
|
|
goto disable_napi;
|
|
}
|
|
|
|
slic_write(sdev, SLIC_REG_ICR, SLIC_ICR_INT_ON);
|
|
slic_flush_write(sdev);
|
|
/* request initial link status */
|
|
err = slic_handle_link_change(sdev);
|
|
if (err)
|
|
netdev_warn(sdev->netdev,
|
|
"failed to set initial link state: %u\n", err);
|
|
return 0;
|
|
|
|
disable_napi:
|
|
napi_disable(&sdev->napi);
|
|
slic_free_stat_queue(sdev);
|
|
free_txq:
|
|
slic_free_tx_queue(sdev);
|
|
free_rxq:
|
|
slic_free_rx_queue(sdev);
|
|
free_sm:
|
|
slic_free_shmem(sdev);
|
|
slic_card_reset(sdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int slic_open(struct net_device *dev)
|
|
{
|
|
struct slic_device *sdev = netdev_priv(dev);
|
|
int err;
|
|
|
|
netif_carrier_off(dev);
|
|
|
|
err = slic_init_iface(sdev);
|
|
if (err) {
|
|
netdev_err(dev, "failed to initialize interface: %i\n", err);
|
|
return err;
|
|
}
|
|
|
|
netif_start_queue(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int slic_close(struct net_device *dev)
|
|
{
|
|
struct slic_device *sdev = netdev_priv(dev);
|
|
u32 val;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
/* stop irq handling */
|
|
napi_disable(&sdev->napi);
|
|
slic_write(sdev, SLIC_REG_ICR, SLIC_ICR_INT_OFF);
|
|
slic_write(sdev, SLIC_REG_ISR, 0);
|
|
slic_flush_write(sdev);
|
|
|
|
free_irq(sdev->pdev->irq, sdev);
|
|
/* turn off RCV and XMT and power down PHY */
|
|
val = SLIC_GXCR_RESET | SLIC_GXCR_PAUSEEN;
|
|
slic_write(sdev, SLIC_REG_WXCFG, val);
|
|
|
|
val = SLIC_GRCR_RESET | SLIC_GRCR_CTLEN | SLIC_GRCR_ADDRAEN |
|
|
SLIC_GRCR_HASHSIZE << SLIC_GRCR_HASHSIZE_SHIFT;
|
|
slic_write(sdev, SLIC_REG_WRCFG, val);
|
|
|
|
val = MII_BMCR << 16 | BMCR_PDOWN;
|
|
slic_write(sdev, SLIC_REG_WPHY, val);
|
|
slic_flush_write(sdev);
|
|
|
|
slic_clear_upr_list(&sdev->upr_list);
|
|
slic_write(sdev, SLIC_REG_QUIESCE, 0);
|
|
|
|
slic_free_stat_queue(sdev);
|
|
slic_free_tx_queue(sdev);
|
|
slic_free_rx_queue(sdev);
|
|
slic_free_shmem(sdev);
|
|
|
|
slic_card_reset(sdev);
|
|
netif_carrier_off(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static netdev_tx_t slic_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct slic_device *sdev = netdev_priv(dev);
|
|
struct slic_tx_queue *txq = &sdev->txq;
|
|
struct slic_tx_buffer *buff;
|
|
struct slic_tx_desc *desc;
|
|
dma_addr_t paddr;
|
|
u32 cbar_val;
|
|
u32 maplen;
|
|
|
|
if (unlikely(slic_get_free_tx_descs(txq) < SLIC_MAX_REQ_TX_DESCS)) {
|
|
netdev_err(dev, "BUG! not enough tx LEs left: %u\n",
|
|
slic_get_free_tx_descs(txq));
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
maplen = skb_headlen(skb);
|
|
paddr = dma_map_single(&sdev->pdev->dev, skb->data, maplen,
|
|
DMA_TO_DEVICE);
|
|
if (dma_mapping_error(&sdev->pdev->dev, paddr)) {
|
|
netdev_err(dev, "failed to map tx buffer\n");
|
|
goto drop_skb;
|
|
}
|
|
|
|
buff = &txq->txbuffs[txq->put_idx];
|
|
buff->skb = skb;
|
|
dma_unmap_addr_set(buff, map_addr, paddr);
|
|
dma_unmap_len_set(buff, map_len, maplen);
|
|
|
|
desc = buff->desc;
|
|
desc->totlen = cpu_to_le32(maplen);
|
|
desc->paddrl = cpu_to_le32(lower_32_bits(paddr));
|
|
desc->paddrh = cpu_to_le32(upper_32_bits(paddr));
|
|
desc->len = cpu_to_le32(maplen);
|
|
|
|
txq->put_idx = slic_next_queue_idx(txq->put_idx, txq->len);
|
|
|
|
cbar_val = lower_32_bits(buff->desc_paddr) | 1;
|
|
/* complete writes to RAM and DMA before hardware is informed */
|
|
wmb();
|
|
|
|
slic_write(sdev, SLIC_REG_CBAR, cbar_val);
|
|
|
|
if (slic_get_free_tx_descs(txq) < SLIC_MAX_REQ_TX_DESCS)
|
|
netif_stop_queue(dev);
|
|
|
|
return NETDEV_TX_OK;
|
|
drop_skb:
|
|
dev_kfree_skb_any(skb);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static void slic_get_stats(struct net_device *dev,
|
|
struct rtnl_link_stats64 *lst)
|
|
{
|
|
struct slic_device *sdev = netdev_priv(dev);
|
|
struct slic_stats *stats = &sdev->stats;
|
|
|
|
SLIC_GET_STATS_COUNTER(lst->rx_packets, stats, rx_packets);
|
|
SLIC_GET_STATS_COUNTER(lst->tx_packets, stats, tx_packets);
|
|
SLIC_GET_STATS_COUNTER(lst->rx_bytes, stats, rx_bytes);
|
|
SLIC_GET_STATS_COUNTER(lst->tx_bytes, stats, tx_bytes);
|
|
SLIC_GET_STATS_COUNTER(lst->rx_errors, stats, rx_errors);
|
|
SLIC_GET_STATS_COUNTER(lst->rx_dropped, stats, rx_buff_miss);
|
|
SLIC_GET_STATS_COUNTER(lst->tx_dropped, stats, tx_dropped);
|
|
SLIC_GET_STATS_COUNTER(lst->multicast, stats, rx_mcasts);
|
|
SLIC_GET_STATS_COUNTER(lst->rx_over_errors, stats, rx_buffoflow);
|
|
SLIC_GET_STATS_COUNTER(lst->rx_crc_errors, stats, rx_crc);
|
|
SLIC_GET_STATS_COUNTER(lst->rx_fifo_errors, stats, rx_oflow802);
|
|
SLIC_GET_STATS_COUNTER(lst->tx_carrier_errors, stats, tx_carrier);
|
|
}
|
|
|
|
static int slic_get_sset_count(struct net_device *dev, int sset)
|
|
{
|
|
switch (sset) {
|
|
case ETH_SS_STATS:
|
|
return ARRAY_SIZE(slic_stats_strings);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static void slic_get_ethtool_stats(struct net_device *dev,
|
|
struct ethtool_stats *eth_stats, u64 *data)
|
|
{
|
|
struct slic_device *sdev = netdev_priv(dev);
|
|
struct slic_stats *stats = &sdev->stats;
|
|
|
|
SLIC_GET_STATS_COUNTER(data[0], stats, rx_packets);
|
|
SLIC_GET_STATS_COUNTER(data[1], stats, rx_bytes);
|
|
SLIC_GET_STATS_COUNTER(data[2], stats, rx_mcasts);
|
|
SLIC_GET_STATS_COUNTER(data[3], stats, rx_errors);
|
|
SLIC_GET_STATS_COUNTER(data[4], stats, rx_buff_miss);
|
|
SLIC_GET_STATS_COUNTER(data[5], stats, rx_tpcsum);
|
|
SLIC_GET_STATS_COUNTER(data[6], stats, rx_tpoflow);
|
|
SLIC_GET_STATS_COUNTER(data[7], stats, rx_tphlen);
|
|
SLIC_GET_STATS_COUNTER(data[8], stats, rx_ipcsum);
|
|
SLIC_GET_STATS_COUNTER(data[9], stats, rx_iplen);
|
|
SLIC_GET_STATS_COUNTER(data[10], stats, rx_iphlen);
|
|
SLIC_GET_STATS_COUNTER(data[11], stats, rx_early);
|
|
SLIC_GET_STATS_COUNTER(data[12], stats, rx_buffoflow);
|
|
SLIC_GET_STATS_COUNTER(data[13], stats, rx_lcode);
|
|
SLIC_GET_STATS_COUNTER(data[14], stats, rx_drbl);
|
|
SLIC_GET_STATS_COUNTER(data[15], stats, rx_crc);
|
|
SLIC_GET_STATS_COUNTER(data[16], stats, rx_oflow802);
|
|
SLIC_GET_STATS_COUNTER(data[17], stats, rx_uflow802);
|
|
SLIC_GET_STATS_COUNTER(data[18], stats, tx_packets);
|
|
SLIC_GET_STATS_COUNTER(data[19], stats, tx_bytes);
|
|
SLIC_GET_STATS_COUNTER(data[20], stats, tx_carrier);
|
|
SLIC_GET_STATS_COUNTER(data[21], stats, tx_dropped);
|
|
SLIC_GET_STATS_COUNTER(data[22], stats, irq_errs);
|
|
}
|
|
|
|
static void slic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
|
|
{
|
|
if (stringset == ETH_SS_STATS) {
|
|
memcpy(data, slic_stats_strings, sizeof(slic_stats_strings));
|
|
data += sizeof(slic_stats_strings);
|
|
}
|
|
}
|
|
|
|
static void slic_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
struct slic_device *sdev = netdev_priv(dev);
|
|
|
|
strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
|
|
strlcpy(info->version, DRV_VERSION, sizeof(info->version));
|
|
strlcpy(info->bus_info, pci_name(sdev->pdev), sizeof(info->bus_info));
|
|
}
|
|
|
|
static const struct ethtool_ops slic_ethtool_ops = {
|
|
.get_drvinfo = slic_get_drvinfo,
|
|
.get_link = ethtool_op_get_link,
|
|
.get_strings = slic_get_strings,
|
|
.get_ethtool_stats = slic_get_ethtool_stats,
|
|
.get_sset_count = slic_get_sset_count,
|
|
};
|
|
|
|
static const struct net_device_ops slic_netdev_ops = {
|
|
.ndo_open = slic_open,
|
|
.ndo_stop = slic_close,
|
|
.ndo_start_xmit = slic_xmit,
|
|
.ndo_set_mac_address = eth_mac_addr,
|
|
.ndo_get_stats64 = slic_get_stats,
|
|
.ndo_set_rx_mode = slic_set_rx_mode,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
};
|
|
|
|
static u16 slic_eeprom_csum(unsigned char *eeprom, unsigned int len)
|
|
{
|
|
unsigned char *ptr = eeprom;
|
|
u32 csum = 0;
|
|
__le16 data;
|
|
|
|
while (len > 1) {
|
|
memcpy(&data, ptr, sizeof(data));
|
|
csum += le16_to_cpu(data);
|
|
ptr += 2;
|
|
len -= 2;
|
|
}
|
|
if (len > 0)
|
|
csum += *(u8 *)ptr;
|
|
while (csum >> 16)
|
|
csum = (csum & 0xFFFF) + ((csum >> 16) & 0xFFFF);
|
|
return ~csum;
|
|
}
|
|
|
|
/* check eeprom size, magic and checksum */
|
|
static bool slic_eeprom_valid(unsigned char *eeprom, unsigned int size)
|
|
{
|
|
const unsigned int MAX_SIZE = 128;
|
|
const unsigned int MIN_SIZE = 98;
|
|
__le16 magic;
|
|
__le16 csum;
|
|
|
|
if (size < MIN_SIZE || size > MAX_SIZE)
|
|
return false;
|
|
memcpy(&magic, eeprom, sizeof(magic));
|
|
if (le16_to_cpu(magic) != SLIC_EEPROM_MAGIC)
|
|
return false;
|
|
/* cut checksum bytes */
|
|
size -= 2;
|
|
memcpy(&csum, eeprom + size, sizeof(csum));
|
|
|
|
return (le16_to_cpu(csum) == slic_eeprom_csum(eeprom, size));
|
|
}
|
|
|
|
static int slic_read_eeprom(struct slic_device *sdev)
|
|
{
|
|
unsigned int devfn = PCI_FUNC(sdev->pdev->devfn);
|
|
struct slic_shmem *sm = &sdev->shmem;
|
|
struct slic_shmem_data *sm_data = sm->shmem_data;
|
|
const unsigned int MAX_LOOPS = 5000;
|
|
unsigned int codesize;
|
|
unsigned char *eeprom;
|
|
struct slic_upr *upr;
|
|
unsigned int i = 0;
|
|
dma_addr_t paddr;
|
|
int err = 0;
|
|
u8 *mac[2];
|
|
|
|
eeprom = dma_alloc_coherent(&sdev->pdev->dev, SLIC_EEPROM_SIZE,
|
|
&paddr, GFP_KERNEL);
|
|
if (!eeprom)
|
|
return -ENOMEM;
|
|
|
|
slic_write(sdev, SLIC_REG_ICR, SLIC_ICR_INT_OFF);
|
|
/* setup ISP temporarily */
|
|
slic_write(sdev, SLIC_REG_ISP, lower_32_bits(sm->isr_paddr));
|
|
|
|
err = slic_new_upr(sdev, SLIC_UPR_CONFIG, paddr);
|
|
if (!err) {
|
|
for (i = 0; i < MAX_LOOPS; i++) {
|
|
if (le32_to_cpu(sm_data->isr) & SLIC_ISR_UPC)
|
|
break;
|
|
mdelay(1);
|
|
}
|
|
if (i == MAX_LOOPS) {
|
|
dev_err(&sdev->pdev->dev,
|
|
"timed out while waiting for eeprom data\n");
|
|
err = -ETIMEDOUT;
|
|
}
|
|
upr = slic_dequeue_upr(sdev);
|
|
kfree(upr);
|
|
}
|
|
|
|
slic_write(sdev, SLIC_REG_ISP, 0);
|
|
slic_write(sdev, SLIC_REG_ISR, 0);
|
|
slic_flush_write(sdev);
|
|
|
|
if (err)
|
|
goto free_eeprom;
|
|
|
|
if (sdev->model == SLIC_MODEL_OASIS) {
|
|
struct slic_oasis_eeprom *oee;
|
|
|
|
oee = (struct slic_oasis_eeprom *)eeprom;
|
|
mac[0] = oee->mac;
|
|
mac[1] = oee->mac2;
|
|
codesize = le16_to_cpu(oee->eeprom_code_size);
|
|
} else {
|
|
struct slic_mojave_eeprom *mee;
|
|
|
|
mee = (struct slic_mojave_eeprom *)eeprom;
|
|
mac[0] = mee->mac;
|
|
mac[1] = mee->mac2;
|
|
codesize = le16_to_cpu(mee->eeprom_code_size);
|
|
}
|
|
|
|
if (!slic_eeprom_valid(eeprom, codesize)) {
|
|
dev_err(&sdev->pdev->dev, "invalid checksum in eeprom\n");
|
|
err = -EINVAL;
|
|
goto free_eeprom;
|
|
}
|
|
/* set mac address */
|
|
ether_addr_copy(sdev->netdev->dev_addr, mac[devfn]);
|
|
free_eeprom:
|
|
dma_free_coherent(&sdev->pdev->dev, SLIC_EEPROM_SIZE, eeprom, paddr);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int slic_init(struct slic_device *sdev)
|
|
{
|
|
int err;
|
|
|
|
spin_lock_init(&sdev->upper_lock);
|
|
spin_lock_init(&sdev->link_lock);
|
|
INIT_LIST_HEAD(&sdev->upr_list.list);
|
|
spin_lock_init(&sdev->upr_list.lock);
|
|
u64_stats_init(&sdev->stats.syncp);
|
|
|
|
slic_card_reset(sdev);
|
|
|
|
err = slic_load_firmware(sdev);
|
|
if (err) {
|
|
dev_err(&sdev->pdev->dev, "failed to load firmware\n");
|
|
return err;
|
|
}
|
|
|
|
/* we need the shared memory to read EEPROM so set it up temporarily */
|
|
err = slic_init_shmem(sdev);
|
|
if (err) {
|
|
dev_err(&sdev->pdev->dev, "failed to init shared memory\n");
|
|
return err;
|
|
}
|
|
|
|
err = slic_read_eeprom(sdev);
|
|
if (err) {
|
|
dev_err(&sdev->pdev->dev, "failed to read eeprom\n");
|
|
goto free_sm;
|
|
}
|
|
|
|
slic_card_reset(sdev);
|
|
slic_free_shmem(sdev);
|
|
|
|
return 0;
|
|
free_sm:
|
|
slic_free_shmem(sdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static bool slic_is_fiber(unsigned short subdev)
|
|
{
|
|
switch (subdev) {
|
|
/* Mojave */
|
|
case PCI_SUBDEVICE_ID_ALACRITECH_1000X1F: /* fallthrough */
|
|
case PCI_SUBDEVICE_ID_ALACRITECH_SES1001F: /* fallthrough */
|
|
/* Oasis */
|
|
case PCI_SUBDEVICE_ID_ALACRITECH_SEN2002XF: /* fallthrough */
|
|
case PCI_SUBDEVICE_ID_ALACRITECH_SEN2001XF: /* fallthrough */
|
|
case PCI_SUBDEVICE_ID_ALACRITECH_SEN2104EF: /* fallthrough */
|
|
case PCI_SUBDEVICE_ID_ALACRITECH_SEN2102EF: /* fallthrough */
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void slic_configure_pci(struct pci_dev *pdev)
|
|
{
|
|
u16 old;
|
|
u16 cmd;
|
|
|
|
pci_read_config_word(pdev, PCI_COMMAND, &old);
|
|
|
|
cmd = old | PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
|
|
if (old != cmd)
|
|
pci_write_config_word(pdev, PCI_COMMAND, cmd);
|
|
}
|
|
|
|
static int slic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
struct slic_device *sdev;
|
|
struct net_device *dev;
|
|
int err;
|
|
|
|
err = pci_enable_device(pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "failed to enable PCI device\n");
|
|
return err;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
pci_try_set_mwi(pdev);
|
|
|
|
slic_configure_pci(pdev);
|
|
|
|
err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
|
|
if (err) {
|
|
dev_err(&pdev->dev, "failed to setup DMA\n");
|
|
goto disable;
|
|
}
|
|
|
|
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
|
|
|
|
err = pci_request_regions(pdev, DRV_NAME);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "failed to obtain PCI regions\n");
|
|
goto disable;
|
|
}
|
|
|
|
dev = alloc_etherdev(sizeof(*sdev));
|
|
if (!dev) {
|
|
dev_err(&pdev->dev, "failed to alloc ethernet device\n");
|
|
err = -ENOMEM;
|
|
goto free_regions;
|
|
}
|
|
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
pci_set_drvdata(pdev, dev);
|
|
dev->irq = pdev->irq;
|
|
dev->netdev_ops = &slic_netdev_ops;
|
|
dev->hw_features = NETIF_F_RXCSUM;
|
|
dev->features |= dev->hw_features;
|
|
|
|
dev->ethtool_ops = &slic_ethtool_ops;
|
|
|
|
sdev = netdev_priv(dev);
|
|
sdev->model = (pdev->device == PCI_DEVICE_ID_ALACRITECH_OASIS) ?
|
|
SLIC_MODEL_OASIS : SLIC_MODEL_MOJAVE;
|
|
sdev->is_fiber = slic_is_fiber(pdev->subsystem_device);
|
|
sdev->pdev = pdev;
|
|
sdev->netdev = dev;
|
|
sdev->regs = ioremap_nocache(pci_resource_start(pdev, 0),
|
|
pci_resource_len(pdev, 0));
|
|
if (!sdev->regs) {
|
|
dev_err(&pdev->dev, "failed to map registers\n");
|
|
err = -ENOMEM;
|
|
goto free_netdev;
|
|
}
|
|
|
|
err = slic_init(sdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "failed to initialize driver\n");
|
|
goto unmap;
|
|
}
|
|
|
|
netif_napi_add(dev, &sdev->napi, slic_poll, SLIC_NAPI_WEIGHT);
|
|
netif_carrier_off(dev);
|
|
|
|
err = register_netdev(dev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "failed to register net device: %i\n", err);
|
|
goto unmap;
|
|
}
|
|
|
|
return 0;
|
|
|
|
unmap:
|
|
iounmap(sdev->regs);
|
|
free_netdev:
|
|
free_netdev(dev);
|
|
free_regions:
|
|
pci_release_regions(pdev);
|
|
disable:
|
|
pci_disable_device(pdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void slic_remove(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *dev = pci_get_drvdata(pdev);
|
|
struct slic_device *sdev = netdev_priv(dev);
|
|
|
|
unregister_netdev(dev);
|
|
iounmap(sdev->regs);
|
|
free_netdev(dev);
|
|
pci_release_regions(pdev);
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
static struct pci_driver slic_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = slic_id_tbl,
|
|
.probe = slic_probe,
|
|
.remove = slic_remove,
|
|
};
|
|
|
|
module_pci_driver(slic_driver);
|
|
|
|
MODULE_DESCRIPTION("Alacritech non-accelerated SLIC driver");
|
|
MODULE_AUTHOR("Lino Sanfilippo <LinoSanfilippo@gmx.de>");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION(DRV_VERSION);
|