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![Joe Perches](/assets/img/avatar_default.png)
This is nicer than the MAC_FMT stuff. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1579 lines
40 KiB
C
1579 lines
40 KiB
C
/*
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* PS3 gelic network driver.
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*
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* Copyright (C) 2007 Sony Computer Entertainment Inc.
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* Copyright 2006, 2007 Sony Corporation
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*
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* This file is based on: spider_net.c
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*
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* (C) Copyright IBM Corp. 2005
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*
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* Authors : Utz Bacher <utz.bacher@de.ibm.com>
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* Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#undef DEBUG
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/etherdevice.h>
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#include <linux/ethtool.h>
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#include <linux/if_vlan.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/dma-mapping.h>
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#include <net/checksum.h>
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#include <asm/firmware.h>
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#include <asm/ps3.h>
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#include <asm/lv1call.h>
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#include "ps3_gelic_net.h"
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#define DRV_NAME "Gelic Network Driver"
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#define DRV_VERSION "1.0"
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MODULE_AUTHOR("SCE Inc.");
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MODULE_DESCRIPTION("Gelic Network driver");
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MODULE_LICENSE("GPL");
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static inline struct device *ctodev(struct gelic_net_card *card)
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{
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return &card->dev->core;
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}
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static inline unsigned int bus_id(struct gelic_net_card *card)
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{
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return card->dev->bus_id;
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}
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static inline unsigned int dev_id(struct gelic_net_card *card)
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{
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return card->dev->dev_id;
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}
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/* set irq_mask */
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static int gelic_net_set_irq_mask(struct gelic_net_card *card, u64 mask)
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{
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int status;
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status = lv1_net_set_interrupt_mask(bus_id(card), dev_id(card),
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mask, 0);
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if (status)
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dev_info(ctodev(card),
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"lv1_net_set_interrupt_mask failed %d\n", status);
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return status;
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}
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static inline void gelic_net_rx_irq_on(struct gelic_net_card *card)
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{
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gelic_net_set_irq_mask(card, card->ghiintmask | GELIC_NET_RXINT);
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}
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static inline void gelic_net_rx_irq_off(struct gelic_net_card *card)
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{
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gelic_net_set_irq_mask(card, card->ghiintmask & ~GELIC_NET_RXINT);
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}
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/**
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* gelic_net_get_descr_status -- returns the status of a descriptor
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* @descr: descriptor to look at
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*
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* returns the status as in the dmac_cmd_status field of the descriptor
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*/
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static enum gelic_net_descr_status
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gelic_net_get_descr_status(struct gelic_net_descr *descr)
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{
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u32 cmd_status;
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cmd_status = descr->dmac_cmd_status;
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cmd_status >>= GELIC_NET_DESCR_IND_PROC_SHIFT;
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return cmd_status;
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}
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/**
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* gelic_net_set_descr_status -- sets the status of a descriptor
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* @descr: descriptor to change
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* @status: status to set in the descriptor
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*
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* changes the status to the specified value. Doesn't change other bits
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* in the status
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*/
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static void gelic_net_set_descr_status(struct gelic_net_descr *descr,
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enum gelic_net_descr_status status)
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{
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u32 cmd_status;
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/* read the status */
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cmd_status = descr->dmac_cmd_status;
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/* clean the upper 4 bits */
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cmd_status &= GELIC_NET_DESCR_IND_PROC_MASKO;
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/* add the status to it */
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cmd_status |= ((u32)status) << GELIC_NET_DESCR_IND_PROC_SHIFT;
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/* and write it back */
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descr->dmac_cmd_status = cmd_status;
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/*
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* dma_cmd_status field is used to indicate whether the descriptor
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* is valid or not.
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* Usually caller of this function wants to inform that to the
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* hardware, so we assure here the hardware sees the change.
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*/
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wmb();
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}
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/**
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* gelic_net_free_chain - free descriptor chain
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* @card: card structure
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* @descr_in: address of desc
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*/
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static void gelic_net_free_chain(struct gelic_net_card *card,
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struct gelic_net_descr *descr_in)
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{
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struct gelic_net_descr *descr;
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for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) {
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dma_unmap_single(ctodev(card), descr->bus_addr,
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GELIC_NET_DESCR_SIZE, DMA_BIDIRECTIONAL);
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descr->bus_addr = 0;
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}
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}
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/**
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* gelic_net_init_chain - links descriptor chain
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* @card: card structure
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* @chain: address of chain
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* @start_descr: address of descriptor array
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* @no: number of descriptors
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*
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* we manage a circular list that mirrors the hardware structure,
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* except that the hardware uses bus addresses.
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*
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* returns 0 on success, <0 on failure
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*/
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static int gelic_net_init_chain(struct gelic_net_card *card,
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struct gelic_net_descr_chain *chain,
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struct gelic_net_descr *start_descr, int no)
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{
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int i;
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struct gelic_net_descr *descr;
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descr = start_descr;
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memset(descr, 0, sizeof(*descr) * no);
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/* set up the hardware pointers in each descriptor */
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for (i = 0; i < no; i++, descr++) {
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gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);
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descr->bus_addr =
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dma_map_single(ctodev(card), descr,
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GELIC_NET_DESCR_SIZE,
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DMA_BIDIRECTIONAL);
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if (!descr->bus_addr)
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goto iommu_error;
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descr->next = descr + 1;
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descr->prev = descr - 1;
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}
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/* make them as ring */
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(descr - 1)->next = start_descr;
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start_descr->prev = (descr - 1);
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/* chain bus addr of hw descriptor */
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descr = start_descr;
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for (i = 0; i < no; i++, descr++) {
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descr->next_descr_addr = descr->next->bus_addr;
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}
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chain->head = start_descr;
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chain->tail = start_descr;
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/* do not chain last hw descriptor */
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(descr - 1)->next_descr_addr = 0;
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return 0;
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iommu_error:
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for (i--, descr--; 0 <= i; i--, descr--)
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if (descr->bus_addr)
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dma_unmap_single(ctodev(card), descr->bus_addr,
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GELIC_NET_DESCR_SIZE,
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DMA_BIDIRECTIONAL);
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return -ENOMEM;
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}
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/**
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* gelic_net_prepare_rx_descr - reinitializes a rx descriptor
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* @card: card structure
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* @descr: descriptor to re-init
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*
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* return 0 on succes, <0 on failure
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*
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* allocates a new rx skb, iommu-maps it and attaches it to the descriptor.
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* Activate the descriptor state-wise
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*/
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static int gelic_net_prepare_rx_descr(struct gelic_net_card *card,
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struct gelic_net_descr *descr)
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{
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int offset;
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unsigned int bufsize;
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if (gelic_net_get_descr_status(descr) != GELIC_NET_DESCR_NOT_IN_USE) {
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dev_info(ctodev(card), "%s: ERROR status \n", __func__);
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}
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/* we need to round up the buffer size to a multiple of 128 */
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bufsize = ALIGN(GELIC_NET_MAX_MTU, GELIC_NET_RXBUF_ALIGN);
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/* and we need to have it 128 byte aligned, therefore we allocate a
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* bit more */
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descr->skb = netdev_alloc_skb(card->netdev,
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bufsize + GELIC_NET_RXBUF_ALIGN - 1);
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if (!descr->skb) {
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descr->buf_addr = 0; /* tell DMAC don't touch memory */
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dev_info(ctodev(card),
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"%s:allocate skb failed !!\n", __func__);
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return -ENOMEM;
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}
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descr->buf_size = bufsize;
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descr->dmac_cmd_status = 0;
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descr->result_size = 0;
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descr->valid_size = 0;
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descr->data_error = 0;
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offset = ((unsigned long)descr->skb->data) &
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(GELIC_NET_RXBUF_ALIGN - 1);
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if (offset)
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skb_reserve(descr->skb, GELIC_NET_RXBUF_ALIGN - offset);
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/* io-mmu-map the skb */
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descr->buf_addr = dma_map_single(ctodev(card), descr->skb->data,
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GELIC_NET_MAX_MTU,
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DMA_FROM_DEVICE);
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if (!descr->buf_addr) {
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dev_kfree_skb_any(descr->skb);
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descr->skb = NULL;
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dev_info(ctodev(card),
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"%s:Could not iommu-map rx buffer\n", __func__);
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gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);
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return -ENOMEM;
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} else {
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gelic_net_set_descr_status(descr, GELIC_NET_DESCR_CARDOWNED);
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return 0;
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}
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}
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/**
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* gelic_net_release_rx_chain - free all skb of rx descr
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* @card: card structure
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*
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*/
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static void gelic_net_release_rx_chain(struct gelic_net_card *card)
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{
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struct gelic_net_descr *descr = card->rx_chain.head;
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do {
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if (descr->skb) {
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dma_unmap_single(ctodev(card),
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descr->buf_addr,
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descr->skb->len,
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DMA_FROM_DEVICE);
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descr->buf_addr = 0;
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dev_kfree_skb_any(descr->skb);
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descr->skb = NULL;
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gelic_net_set_descr_status(descr,
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GELIC_NET_DESCR_NOT_IN_USE);
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}
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descr = descr->next;
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} while (descr != card->rx_chain.head);
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}
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/**
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* gelic_net_fill_rx_chain - fills descriptors/skbs in the rx chains
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* @card: card structure
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*
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* fills all descriptors in the rx chain: allocates skbs
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* and iommu-maps them.
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* returns 0 on success, <0 on failure
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*/
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static int gelic_net_fill_rx_chain(struct gelic_net_card *card)
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{
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struct gelic_net_descr *descr = card->rx_chain.head;
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int ret;
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do {
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if (!descr->skb) {
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ret = gelic_net_prepare_rx_descr(card, descr);
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if (ret)
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goto rewind;
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}
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descr = descr->next;
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} while (descr != card->rx_chain.head);
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return 0;
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rewind:
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gelic_net_release_rx_chain(card);
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return ret;
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}
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/**
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* gelic_net_alloc_rx_skbs - allocates rx skbs in rx descriptor chains
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* @card: card structure
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*
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* returns 0 on success, <0 on failure
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*/
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static int gelic_net_alloc_rx_skbs(struct gelic_net_card *card)
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{
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struct gelic_net_descr_chain *chain;
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int ret;
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chain = &card->rx_chain;
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ret = gelic_net_fill_rx_chain(card);
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chain->head = card->rx_top->prev; /* point to the last */
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return ret;
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}
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/**
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* gelic_net_release_tx_descr - processes a used tx descriptor
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* @card: card structure
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* @descr: descriptor to release
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*
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* releases a used tx descriptor (unmapping, freeing of skb)
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*/
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static void gelic_net_release_tx_descr(struct gelic_net_card *card,
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struct gelic_net_descr *descr)
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{
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struct sk_buff *skb = descr->skb;
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BUG_ON(!(descr->data_status & (1 << GELIC_NET_TXDESC_TAIL)));
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dma_unmap_single(ctodev(card), descr->buf_addr, skb->len,
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DMA_TO_DEVICE);
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dev_kfree_skb_any(skb);
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descr->buf_addr = 0;
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descr->buf_size = 0;
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descr->next_descr_addr = 0;
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descr->result_size = 0;
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descr->valid_size = 0;
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descr->data_status = 0;
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descr->data_error = 0;
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descr->skb = NULL;
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/* set descr status */
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gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);
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}
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/**
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* gelic_net_release_tx_chain - processes sent tx descriptors
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* @card: adapter structure
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* @stop: net_stop sequence
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*
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* releases the tx descriptors that gelic has finished with
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*/
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static void gelic_net_release_tx_chain(struct gelic_net_card *card, int stop)
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{
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struct gelic_net_descr_chain *tx_chain;
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enum gelic_net_descr_status status;
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int release = 0;
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for (tx_chain = &card->tx_chain;
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tx_chain->head != tx_chain->tail && tx_chain->tail;
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tx_chain->tail = tx_chain->tail->next) {
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status = gelic_net_get_descr_status(tx_chain->tail);
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switch (status) {
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case GELIC_NET_DESCR_RESPONSE_ERROR:
|
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case GELIC_NET_DESCR_PROTECTION_ERROR:
|
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case GELIC_NET_DESCR_FORCE_END:
|
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if (printk_ratelimit())
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dev_info(ctodev(card),
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"%s: forcing end of tx descriptor " \
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"with status %x\n",
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__func__, status);
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card->netdev->stats.tx_dropped++;
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break;
|
|
|
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case GELIC_NET_DESCR_COMPLETE:
|
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if (tx_chain->tail->skb) {
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card->netdev->stats.tx_packets++;
|
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card->netdev->stats.tx_bytes +=
|
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tx_chain->tail->skb->len;
|
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}
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break;
|
|
|
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case GELIC_NET_DESCR_CARDOWNED:
|
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/* pending tx request */
|
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default:
|
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/* any other value (== GELIC_NET_DESCR_NOT_IN_USE) */
|
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if (!stop)
|
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goto out;
|
|
}
|
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gelic_net_release_tx_descr(card, tx_chain->tail);
|
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release ++;
|
|
}
|
|
out:
|
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if (!stop && release)
|
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netif_wake_queue(card->netdev);
|
|
}
|
|
|
|
/**
|
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* gelic_net_set_multi - sets multicast addresses and promisc flags
|
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* @netdev: interface device structure
|
|
*
|
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* gelic_net_set_multi configures multicast addresses as needed for the
|
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* netdev interface. It also sets up multicast, allmulti and promisc
|
|
* flags appropriately
|
|
*/
|
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static void gelic_net_set_multi(struct net_device *netdev)
|
|
{
|
|
struct gelic_net_card *card = netdev_priv(netdev);
|
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struct dev_mc_list *mc;
|
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unsigned int i;
|
|
uint8_t *p;
|
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u64 addr;
|
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int status;
|
|
|
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/* clear all multicast address */
|
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status = lv1_net_remove_multicast_address(bus_id(card), dev_id(card),
|
|
0, 1);
|
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if (status)
|
|
dev_err(ctodev(card),
|
|
"lv1_net_remove_multicast_address failed %d\n",
|
|
status);
|
|
/* set broadcast address */
|
|
status = lv1_net_add_multicast_address(bus_id(card), dev_id(card),
|
|
GELIC_NET_BROADCAST_ADDR, 0);
|
|
if (status)
|
|
dev_err(ctodev(card),
|
|
"lv1_net_add_multicast_address failed, %d\n",
|
|
status);
|
|
|
|
if (netdev->flags & IFF_ALLMULTI
|
|
|| netdev->mc_count > GELIC_NET_MC_COUNT_MAX) { /* list max */
|
|
status = lv1_net_add_multicast_address(bus_id(card),
|
|
dev_id(card),
|
|
0, 1);
|
|
if (status)
|
|
dev_err(ctodev(card),
|
|
"lv1_net_add_multicast_address failed, %d\n",
|
|
status);
|
|
return;
|
|
}
|
|
|
|
/* set multicast address */
|
|
for (mc = netdev->mc_list; mc; mc = mc->next) {
|
|
addr = 0;
|
|
p = mc->dmi_addr;
|
|
for (i = 0; i < ETH_ALEN; i++) {
|
|
addr <<= 8;
|
|
addr |= *p++;
|
|
}
|
|
status = lv1_net_add_multicast_address(bus_id(card),
|
|
dev_id(card),
|
|
addr, 0);
|
|
if (status)
|
|
dev_err(ctodev(card),
|
|
"lv1_net_add_multicast_address failed, %d\n",
|
|
status);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gelic_net_enable_rxdmac - enables the receive DMA controller
|
|
* @card: card structure
|
|
*
|
|
* gelic_net_enable_rxdmac enables the DMA controller by setting RX_DMA_EN
|
|
* in the GDADMACCNTR register
|
|
*/
|
|
static inline void gelic_net_enable_rxdmac(struct gelic_net_card *card)
|
|
{
|
|
int status;
|
|
|
|
status = lv1_net_start_rx_dma(bus_id(card), dev_id(card),
|
|
card->rx_chain.tail->bus_addr, 0);
|
|
if (status)
|
|
dev_info(ctodev(card),
|
|
"lv1_net_start_rx_dma failed, status=%d\n", status);
|
|
}
|
|
|
|
/**
|
|
* gelic_net_disable_rxdmac - disables the receive DMA controller
|
|
* @card: card structure
|
|
*
|
|
* gelic_net_disable_rxdmac terminates processing on the DMA controller by
|
|
* turing off DMA and issueing a force end
|
|
*/
|
|
static inline void gelic_net_disable_rxdmac(struct gelic_net_card *card)
|
|
{
|
|
int status;
|
|
|
|
/* this hvc blocks until the DMA in progress really stopped */
|
|
status = lv1_net_stop_rx_dma(bus_id(card), dev_id(card), 0);
|
|
if (status)
|
|
dev_err(ctodev(card),
|
|
"lv1_net_stop_rx_dma faild, %d\n", status);
|
|
}
|
|
|
|
/**
|
|
* gelic_net_disable_txdmac - disables the transmit DMA controller
|
|
* @card: card structure
|
|
*
|
|
* gelic_net_disable_txdmac terminates processing on the DMA controller by
|
|
* turing off DMA and issueing a force end
|
|
*/
|
|
static inline void gelic_net_disable_txdmac(struct gelic_net_card *card)
|
|
{
|
|
int status;
|
|
|
|
/* this hvc blocks until the DMA in progress really stopped */
|
|
status = lv1_net_stop_tx_dma(bus_id(card), dev_id(card), 0);
|
|
if (status)
|
|
dev_err(ctodev(card),
|
|
"lv1_net_stop_tx_dma faild, status=%d\n", status);
|
|
}
|
|
|
|
/**
|
|
* gelic_net_stop - called upon ifconfig down
|
|
* @netdev: interface device structure
|
|
*
|
|
* always returns 0
|
|
*/
|
|
static int gelic_net_stop(struct net_device *netdev)
|
|
{
|
|
struct gelic_net_card *card = netdev_priv(netdev);
|
|
|
|
napi_disable(&card->napi);
|
|
netif_stop_queue(netdev);
|
|
|
|
/* turn off DMA, force end */
|
|
gelic_net_disable_rxdmac(card);
|
|
gelic_net_disable_txdmac(card);
|
|
|
|
gelic_net_set_irq_mask(card, 0);
|
|
|
|
/* disconnect event port */
|
|
free_irq(card->netdev->irq, card->netdev);
|
|
ps3_sb_event_receive_port_destroy(card->dev, card->netdev->irq);
|
|
card->netdev->irq = NO_IRQ;
|
|
|
|
netif_carrier_off(netdev);
|
|
|
|
/* release chains */
|
|
gelic_net_release_tx_chain(card, 1);
|
|
gelic_net_release_rx_chain(card);
|
|
|
|
gelic_net_free_chain(card, card->tx_top);
|
|
gelic_net_free_chain(card, card->rx_top);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* gelic_net_get_next_tx_descr - returns the next available tx descriptor
|
|
* @card: device structure to get descriptor from
|
|
*
|
|
* returns the address of the next descriptor, or NULL if not available.
|
|
*/
|
|
static struct gelic_net_descr *
|
|
gelic_net_get_next_tx_descr(struct gelic_net_card *card)
|
|
{
|
|
if (!card->tx_chain.head)
|
|
return NULL;
|
|
/* see if the next descriptor is free */
|
|
if (card->tx_chain.tail != card->tx_chain.head->next &&
|
|
gelic_net_get_descr_status(card->tx_chain.head) ==
|
|
GELIC_NET_DESCR_NOT_IN_USE)
|
|
return card->tx_chain.head;
|
|
else
|
|
return NULL;
|
|
|
|
}
|
|
|
|
/**
|
|
* gelic_net_set_txdescr_cmdstat - sets the tx descriptor command field
|
|
* @descr: descriptor structure to fill out
|
|
* @skb: packet to consider
|
|
*
|
|
* fills out the command and status field of the descriptor structure,
|
|
* depending on hardware checksum settings. This function assumes a wmb()
|
|
* has executed before.
|
|
*/
|
|
static void gelic_net_set_txdescr_cmdstat(struct gelic_net_descr *descr,
|
|
struct sk_buff *skb)
|
|
{
|
|
if (skb->ip_summed != CHECKSUM_PARTIAL)
|
|
descr->dmac_cmd_status = GELIC_NET_DMAC_CMDSTAT_NOCS |
|
|
GELIC_NET_DMAC_CMDSTAT_END_FRAME;
|
|
else {
|
|
/* is packet ip?
|
|
* if yes: tcp? udp? */
|
|
if (skb->protocol == htons(ETH_P_IP)) {
|
|
if (ip_hdr(skb)->protocol == IPPROTO_TCP)
|
|
descr->dmac_cmd_status =
|
|
GELIC_NET_DMAC_CMDSTAT_TCPCS |
|
|
GELIC_NET_DMAC_CMDSTAT_END_FRAME;
|
|
|
|
else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
|
|
descr->dmac_cmd_status =
|
|
GELIC_NET_DMAC_CMDSTAT_UDPCS |
|
|
GELIC_NET_DMAC_CMDSTAT_END_FRAME;
|
|
else /*
|
|
* the stack should checksum non-tcp and non-udp
|
|
* packets on his own: NETIF_F_IP_CSUM
|
|
*/
|
|
descr->dmac_cmd_status =
|
|
GELIC_NET_DMAC_CMDSTAT_NOCS |
|
|
GELIC_NET_DMAC_CMDSTAT_END_FRAME;
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline struct sk_buff *gelic_put_vlan_tag(struct sk_buff *skb,
|
|
unsigned short tag)
|
|
{
|
|
struct vlan_ethhdr *veth;
|
|
static unsigned int c;
|
|
|
|
if (skb_headroom(skb) < VLAN_HLEN) {
|
|
struct sk_buff *sk_tmp = skb;
|
|
pr_debug("%s: hd=%d c=%ud\n", __func__, skb_headroom(skb), c);
|
|
skb = skb_realloc_headroom(sk_tmp, VLAN_HLEN);
|
|
if (!skb)
|
|
return NULL;
|
|
dev_kfree_skb_any(sk_tmp);
|
|
}
|
|
veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN);
|
|
|
|
/* Move the mac addresses to the top of buffer */
|
|
memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN);
|
|
|
|
veth->h_vlan_proto = __constant_htons(ETH_P_8021Q);
|
|
veth->h_vlan_TCI = htons(tag);
|
|
|
|
return skb;
|
|
}
|
|
|
|
/**
|
|
* gelic_net_prepare_tx_descr_v - get dma address of skb_data
|
|
* @card: card structure
|
|
* @descr: descriptor structure
|
|
* @skb: packet to use
|
|
*
|
|
* returns 0 on success, <0 on failure.
|
|
*
|
|
*/
|
|
static int gelic_net_prepare_tx_descr_v(struct gelic_net_card *card,
|
|
struct gelic_net_descr *descr,
|
|
struct sk_buff *skb)
|
|
{
|
|
dma_addr_t buf;
|
|
|
|
if (card->vlan_index != -1) {
|
|
struct sk_buff *skb_tmp;
|
|
skb_tmp = gelic_put_vlan_tag(skb,
|
|
card->vlan_id[card->vlan_index]);
|
|
if (!skb_tmp)
|
|
return -ENOMEM;
|
|
skb = skb_tmp;
|
|
}
|
|
|
|
buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE);
|
|
|
|
if (!buf) {
|
|
dev_err(ctodev(card),
|
|
"dma map 2 failed (%p, %i). Dropping packet\n",
|
|
skb->data, skb->len);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
descr->buf_addr = buf;
|
|
descr->buf_size = skb->len;
|
|
descr->skb = skb;
|
|
descr->data_status = 0;
|
|
descr->next_descr_addr = 0; /* terminate hw descr */
|
|
gelic_net_set_txdescr_cmdstat(descr, skb);
|
|
|
|
/* bump free descriptor pointer */
|
|
card->tx_chain.head = descr->next;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* gelic_net_kick_txdma - enables TX DMA processing
|
|
* @card: card structure
|
|
* @descr: descriptor address to enable TX processing at
|
|
*
|
|
*/
|
|
static int gelic_net_kick_txdma(struct gelic_net_card *card,
|
|
struct gelic_net_descr *descr)
|
|
{
|
|
int status = 0;
|
|
|
|
if (card->tx_dma_progress)
|
|
return 0;
|
|
|
|
if (gelic_net_get_descr_status(descr) == GELIC_NET_DESCR_CARDOWNED) {
|
|
card->tx_dma_progress = 1;
|
|
status = lv1_net_start_tx_dma(bus_id(card), dev_id(card),
|
|
descr->bus_addr, 0);
|
|
if (status)
|
|
dev_info(ctodev(card), "lv1_net_start_txdma failed," \
|
|
"status=%d\n", status);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* gelic_net_xmit - transmits a frame over the device
|
|
* @skb: packet to send out
|
|
* @netdev: interface device structure
|
|
*
|
|
* returns 0 on success, <0 on failure
|
|
*/
|
|
static int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev)
|
|
{
|
|
struct gelic_net_card *card = netdev_priv(netdev);
|
|
struct gelic_net_descr *descr;
|
|
int result;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&card->tx_dma_lock, flags);
|
|
|
|
gelic_net_release_tx_chain(card, 0);
|
|
|
|
descr = gelic_net_get_next_tx_descr(card);
|
|
if (!descr) {
|
|
/*
|
|
* no more descriptors free
|
|
*/
|
|
netif_stop_queue(netdev);
|
|
spin_unlock_irqrestore(&card->tx_dma_lock, flags);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
result = gelic_net_prepare_tx_descr_v(card, descr, skb);
|
|
if (result) {
|
|
/*
|
|
* DMA map failed. As chanses are that failure
|
|
* would continue, just release skb and return
|
|
*/
|
|
card->netdev->stats.tx_dropped++;
|
|
dev_kfree_skb_any(skb);
|
|
spin_unlock_irqrestore(&card->tx_dma_lock, flags);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
/*
|
|
* link this prepared descriptor to previous one
|
|
* to achieve high performance
|
|
*/
|
|
descr->prev->next_descr_addr = descr->bus_addr;
|
|
/*
|
|
* as hardware descriptor is modified in the above lines,
|
|
* ensure that the hardware sees it
|
|
*/
|
|
wmb();
|
|
if (gelic_net_kick_txdma(card, descr)) {
|
|
/*
|
|
* kick failed.
|
|
* release descriptors which were just prepared
|
|
*/
|
|
card->netdev->stats.tx_dropped++;
|
|
gelic_net_release_tx_descr(card, descr);
|
|
gelic_net_release_tx_descr(card, descr->next);
|
|
card->tx_chain.tail = descr->next->next;
|
|
dev_info(ctodev(card), "%s: kick failure\n", __func__);
|
|
} else {
|
|
/* OK, DMA started/reserved */
|
|
netdev->trans_start = jiffies;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&card->tx_dma_lock, flags);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
/**
|
|
* gelic_net_pass_skb_up - takes an skb from a descriptor and passes it on
|
|
* @descr: descriptor to process
|
|
* @card: card structure
|
|
*
|
|
* iommu-unmaps the skb, fills out skb structure and passes the data to the
|
|
* stack. The descriptor state is not changed.
|
|
*/
|
|
static void gelic_net_pass_skb_up(struct gelic_net_descr *descr,
|
|
struct gelic_net_card *card)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct net_device *netdev;
|
|
u32 data_status, data_error;
|
|
|
|
data_status = descr->data_status;
|
|
data_error = descr->data_error;
|
|
netdev = card->netdev;
|
|
/* unmap skb buffer */
|
|
skb = descr->skb;
|
|
dma_unmap_single(ctodev(card), descr->buf_addr, GELIC_NET_MAX_MTU,
|
|
DMA_FROM_DEVICE);
|
|
|
|
skb_put(skb, descr->valid_size? descr->valid_size : descr->result_size);
|
|
if (!descr->valid_size)
|
|
dev_info(ctodev(card), "buffer full %x %x %x\n",
|
|
descr->result_size, descr->buf_size,
|
|
descr->dmac_cmd_status);
|
|
|
|
descr->skb = NULL;
|
|
/*
|
|
* the card put 2 bytes vlan tag in front
|
|
* of the ethernet frame
|
|
*/
|
|
skb_pull(skb, 2);
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
|
|
/* checksum offload */
|
|
if (card->rx_csum) {
|
|
if ((data_status & GELIC_NET_DATA_STATUS_CHK_MASK) &&
|
|
(!(data_error & GELIC_NET_DATA_ERROR_CHK_MASK)))
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
else
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
} else
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
|
|
/* update netdevice statistics */
|
|
card->netdev->stats.rx_packets++;
|
|
card->netdev->stats.rx_bytes += skb->len;
|
|
|
|
/* pass skb up to stack */
|
|
netif_receive_skb(skb);
|
|
}
|
|
|
|
/**
|
|
* gelic_net_decode_one_descr - processes an rx descriptor
|
|
* @card: card structure
|
|
*
|
|
* returns 1 if a packet has been sent to the stack, otherwise 0
|
|
*
|
|
* processes an rx descriptor by iommu-unmapping the data buffer and passing
|
|
* the packet up to the stack
|
|
*/
|
|
static int gelic_net_decode_one_descr(struct gelic_net_card *card)
|
|
{
|
|
enum gelic_net_descr_status status;
|
|
struct gelic_net_descr_chain *chain = &card->rx_chain;
|
|
struct gelic_net_descr *descr = chain->tail;
|
|
int dmac_chain_ended;
|
|
|
|
status = gelic_net_get_descr_status(descr);
|
|
/* is this descriptor terminated with next_descr == NULL? */
|
|
dmac_chain_ended =
|
|
descr->dmac_cmd_status & GELIC_NET_DMAC_CMDSTAT_RXDCEIS;
|
|
|
|
if (status == GELIC_NET_DESCR_CARDOWNED)
|
|
return 0;
|
|
|
|
if (status == GELIC_NET_DESCR_NOT_IN_USE) {
|
|
dev_dbg(ctodev(card), "dormant descr? %p\n", descr);
|
|
return 0;
|
|
}
|
|
|
|
if ((status == GELIC_NET_DESCR_RESPONSE_ERROR) ||
|
|
(status == GELIC_NET_DESCR_PROTECTION_ERROR) ||
|
|
(status == GELIC_NET_DESCR_FORCE_END)) {
|
|
dev_info(ctodev(card), "dropping RX descriptor with state %x\n",
|
|
status);
|
|
card->netdev->stats.rx_dropped++;
|
|
goto refill;
|
|
}
|
|
|
|
if (status == GELIC_NET_DESCR_BUFFER_FULL) {
|
|
/*
|
|
* Buffer full would occur if and only if
|
|
* the frame length was longer than the size of this
|
|
* descriptor's buffer. If the frame length was equal
|
|
* to or shorter than buffer'size, FRAME_END condition
|
|
* would occur.
|
|
* Anyway this frame was longer than the MTU,
|
|
* just drop it.
|
|
*/
|
|
dev_info(ctodev(card), "overlength frame\n");
|
|
goto refill;
|
|
}
|
|
/*
|
|
* descriptoers any other than FRAME_END here should
|
|
* be treated as error.
|
|
*/
|
|
if (status != GELIC_NET_DESCR_FRAME_END) {
|
|
dev_dbg(ctodev(card), "RX descriptor with state %x\n",
|
|
status);
|
|
goto refill;
|
|
}
|
|
|
|
/* ok, we've got a packet in descr */
|
|
gelic_net_pass_skb_up(descr, card);
|
|
refill:
|
|
/*
|
|
* So that always DMAC can see the end
|
|
* of the descriptor chain to avoid
|
|
* from unwanted DMAC overrun.
|
|
*/
|
|
descr->next_descr_addr = 0;
|
|
|
|
/* change the descriptor state: */
|
|
gelic_net_set_descr_status(descr, GELIC_NET_DESCR_NOT_IN_USE);
|
|
|
|
/*
|
|
* this call can fail, but for now, just leave this
|
|
* decriptor without skb
|
|
*/
|
|
gelic_net_prepare_rx_descr(card, descr);
|
|
|
|
chain->head = descr;
|
|
chain->tail = descr->next;
|
|
|
|
/*
|
|
* Set this descriptor the end of the chain.
|
|
*/
|
|
descr->prev->next_descr_addr = descr->bus_addr;
|
|
|
|
/*
|
|
* If dmac chain was met, DMAC stopped.
|
|
* thus re-enable it
|
|
*/
|
|
if (dmac_chain_ended) {
|
|
card->rx_dma_restart_required = 1;
|
|
dev_dbg(ctodev(card), "reenable rx dma scheduled\n");
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* gelic_net_poll - NAPI poll function called by the stack to return packets
|
|
* @netdev: interface device structure
|
|
* @budget: number of packets we can pass to the stack at most
|
|
*
|
|
* returns 0 if no more packets available to the driver/stack. Returns 1,
|
|
* if the quota is exceeded, but the driver has still packets.
|
|
*
|
|
*/
|
|
static int gelic_net_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct gelic_net_card *card = container_of(napi, struct gelic_net_card, napi);
|
|
struct net_device *netdev = card->netdev;
|
|
int packets_done = 0;
|
|
|
|
while (packets_done < budget) {
|
|
if (!gelic_net_decode_one_descr(card))
|
|
break;
|
|
|
|
packets_done++;
|
|
}
|
|
|
|
if (packets_done < budget) {
|
|
netif_rx_complete(netdev, napi);
|
|
gelic_net_rx_irq_on(card);
|
|
}
|
|
return packets_done;
|
|
}
|
|
/**
|
|
* gelic_net_change_mtu - changes the MTU of an interface
|
|
* @netdev: interface device structure
|
|
* @new_mtu: new MTU value
|
|
*
|
|
* returns 0 on success, <0 on failure
|
|
*/
|
|
static int gelic_net_change_mtu(struct net_device *netdev, int new_mtu)
|
|
{
|
|
/* no need to re-alloc skbs or so -- the max mtu is about 2.3k
|
|
* and mtu is outbound only anyway */
|
|
if ((new_mtu < GELIC_NET_MIN_MTU) ||
|
|
(new_mtu > GELIC_NET_MAX_MTU)) {
|
|
return -EINVAL;
|
|
}
|
|
netdev->mtu = new_mtu;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* gelic_net_interrupt - event handler for gelic_net
|
|
*/
|
|
static irqreturn_t gelic_net_interrupt(int irq, void *ptr)
|
|
{
|
|
unsigned long flags;
|
|
struct net_device *netdev = ptr;
|
|
struct gelic_net_card *card = netdev_priv(netdev);
|
|
u64 status;
|
|
|
|
status = card->irq_status;
|
|
|
|
if (!status)
|
|
return IRQ_NONE;
|
|
|
|
if (card->rx_dma_restart_required) {
|
|
card->rx_dma_restart_required = 0;
|
|
gelic_net_enable_rxdmac(card);
|
|
}
|
|
|
|
if (status & GELIC_NET_RXINT) {
|
|
gelic_net_rx_irq_off(card);
|
|
netif_rx_schedule(netdev, &card->napi);
|
|
}
|
|
|
|
if (status & GELIC_NET_TXINT) {
|
|
spin_lock_irqsave(&card->tx_dma_lock, flags);
|
|
card->tx_dma_progress = 0;
|
|
gelic_net_release_tx_chain(card, 0);
|
|
/* kick outstanding tx descriptor if any */
|
|
gelic_net_kick_txdma(card, card->tx_chain.tail);
|
|
spin_unlock_irqrestore(&card->tx_dma_lock, flags);
|
|
}
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
/**
|
|
* gelic_net_poll_controller - artificial interrupt for netconsole etc.
|
|
* @netdev: interface device structure
|
|
*
|
|
* see Documentation/networking/netconsole.txt
|
|
*/
|
|
static void gelic_net_poll_controller(struct net_device *netdev)
|
|
{
|
|
struct gelic_net_card *card = netdev_priv(netdev);
|
|
|
|
gelic_net_set_irq_mask(card, 0);
|
|
gelic_net_interrupt(netdev->irq, netdev);
|
|
gelic_net_set_irq_mask(card, card->ghiintmask);
|
|
}
|
|
#endif /* CONFIG_NET_POLL_CONTROLLER */
|
|
|
|
/**
|
|
* gelic_net_open_device - open device and map dma region
|
|
* @card: card structure
|
|
*/
|
|
static int gelic_net_open_device(struct gelic_net_card *card)
|
|
{
|
|
int result;
|
|
|
|
result = ps3_sb_event_receive_port_setup(card->dev, PS3_BINDING_CPU_ANY,
|
|
&card->netdev->irq);
|
|
|
|
if (result) {
|
|
dev_info(ctodev(card),
|
|
"%s:%d: gelic_net_open_device failed (%d)\n",
|
|
__func__, __LINE__, result);
|
|
result = -EPERM;
|
|
goto fail_alloc_irq;
|
|
}
|
|
|
|
result = request_irq(card->netdev->irq, gelic_net_interrupt,
|
|
IRQF_DISABLED, card->netdev->name, card->netdev);
|
|
|
|
if (result) {
|
|
dev_info(ctodev(card), "%s:%d: request_irq failed (%d)\n",
|
|
__func__, __LINE__, result);
|
|
goto fail_request_irq;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail_request_irq:
|
|
ps3_sb_event_receive_port_destroy(card->dev, card->netdev->irq);
|
|
card->netdev->irq = NO_IRQ;
|
|
fail_alloc_irq:
|
|
return result;
|
|
}
|
|
|
|
|
|
/**
|
|
* gelic_net_open - called upon ifonfig up
|
|
* @netdev: interface device structure
|
|
*
|
|
* returns 0 on success, <0 on failure
|
|
*
|
|
* gelic_net_open allocates all the descriptors and memory needed for
|
|
* operation, sets up multicast list and enables interrupts
|
|
*/
|
|
static int gelic_net_open(struct net_device *netdev)
|
|
{
|
|
struct gelic_net_card *card = netdev_priv(netdev);
|
|
|
|
dev_dbg(ctodev(card), " -> %s:%d\n", __func__, __LINE__);
|
|
|
|
gelic_net_open_device(card);
|
|
|
|
if (gelic_net_init_chain(card, &card->tx_chain,
|
|
card->descr, GELIC_NET_TX_DESCRIPTORS))
|
|
goto alloc_tx_failed;
|
|
if (gelic_net_init_chain(card, &card->rx_chain,
|
|
card->descr + GELIC_NET_TX_DESCRIPTORS,
|
|
GELIC_NET_RX_DESCRIPTORS))
|
|
goto alloc_rx_failed;
|
|
|
|
/* head of chain */
|
|
card->tx_top = card->tx_chain.head;
|
|
card->rx_top = card->rx_chain.head;
|
|
dev_dbg(ctodev(card), "descr rx %p, tx %p, size %#lx, num %#x\n",
|
|
card->rx_top, card->tx_top, sizeof(struct gelic_net_descr),
|
|
GELIC_NET_RX_DESCRIPTORS);
|
|
/* allocate rx skbs */
|
|
if (gelic_net_alloc_rx_skbs(card))
|
|
goto alloc_skbs_failed;
|
|
|
|
napi_enable(&card->napi);
|
|
|
|
card->tx_dma_progress = 0;
|
|
card->ghiintmask = GELIC_NET_RXINT | GELIC_NET_TXINT;
|
|
|
|
gelic_net_set_irq_mask(card, card->ghiintmask);
|
|
gelic_net_enable_rxdmac(card);
|
|
|
|
netif_start_queue(netdev);
|
|
netif_carrier_on(netdev);
|
|
|
|
return 0;
|
|
|
|
alloc_skbs_failed:
|
|
gelic_net_free_chain(card, card->rx_top);
|
|
alloc_rx_failed:
|
|
gelic_net_free_chain(card, card->tx_top);
|
|
alloc_tx_failed:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static void gelic_net_get_drvinfo (struct net_device *netdev,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
strncpy(info->driver, DRV_NAME, sizeof(info->driver) - 1);
|
|
strncpy(info->version, DRV_VERSION, sizeof(info->version) - 1);
|
|
}
|
|
|
|
static int gelic_net_get_settings(struct net_device *netdev,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
struct gelic_net_card *card = netdev_priv(netdev);
|
|
int status;
|
|
u64 v1, v2;
|
|
int speed, duplex;
|
|
|
|
speed = duplex = -1;
|
|
status = lv1_net_control(bus_id(card), dev_id(card),
|
|
GELIC_NET_GET_ETH_PORT_STATUS, GELIC_NET_PORT, 0, 0,
|
|
&v1, &v2);
|
|
if (status) {
|
|
/* link down */
|
|
} else {
|
|
if (v1 & GELIC_NET_FULL_DUPLEX) {
|
|
duplex = DUPLEX_FULL;
|
|
} else {
|
|
duplex = DUPLEX_HALF;
|
|
}
|
|
|
|
if (v1 & GELIC_NET_SPEED_10 ) {
|
|
speed = SPEED_10;
|
|
} else if (v1 & GELIC_NET_SPEED_100) {
|
|
speed = SPEED_100;
|
|
} else if (v1 & GELIC_NET_SPEED_1000) {
|
|
speed = SPEED_1000;
|
|
}
|
|
}
|
|
cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg |
|
|
SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
|
|
SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
|
|
SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
|
|
cmd->advertising = cmd->supported;
|
|
cmd->speed = speed;
|
|
cmd->duplex = duplex;
|
|
cmd->autoneg = AUTONEG_ENABLE; /* always enabled */
|
|
cmd->port = PORT_TP;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 gelic_net_get_link(struct net_device *netdev)
|
|
{
|
|
struct gelic_net_card *card = netdev_priv(netdev);
|
|
int status;
|
|
u64 v1, v2;
|
|
int link;
|
|
|
|
status = lv1_net_control(bus_id(card), dev_id(card),
|
|
GELIC_NET_GET_ETH_PORT_STATUS, GELIC_NET_PORT, 0, 0,
|
|
&v1, &v2);
|
|
if (status)
|
|
return 0; /* link down */
|
|
|
|
if (v1 & GELIC_NET_LINK_UP)
|
|
link = 1;
|
|
else
|
|
link = 0;
|
|
|
|
return link;
|
|
}
|
|
|
|
static int gelic_net_nway_reset(struct net_device *netdev)
|
|
{
|
|
if (netif_running(netdev)) {
|
|
gelic_net_stop(netdev);
|
|
gelic_net_open(netdev);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static u32 gelic_net_get_tx_csum(struct net_device *netdev)
|
|
{
|
|
return (netdev->features & NETIF_F_IP_CSUM) != 0;
|
|
}
|
|
|
|
static int gelic_net_set_tx_csum(struct net_device *netdev, u32 data)
|
|
{
|
|
if (data)
|
|
netdev->features |= NETIF_F_IP_CSUM;
|
|
else
|
|
netdev->features &= ~NETIF_F_IP_CSUM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 gelic_net_get_rx_csum(struct net_device *netdev)
|
|
{
|
|
struct gelic_net_card *card = netdev_priv(netdev);
|
|
|
|
return card->rx_csum;
|
|
}
|
|
|
|
static int gelic_net_set_rx_csum(struct net_device *netdev, u32 data)
|
|
{
|
|
struct gelic_net_card *card = netdev_priv(netdev);
|
|
|
|
card->rx_csum = data;
|
|
return 0;
|
|
}
|
|
|
|
static struct ethtool_ops gelic_net_ethtool_ops = {
|
|
.get_drvinfo = gelic_net_get_drvinfo,
|
|
.get_settings = gelic_net_get_settings,
|
|
.get_link = gelic_net_get_link,
|
|
.nway_reset = gelic_net_nway_reset,
|
|
.get_tx_csum = gelic_net_get_tx_csum,
|
|
.set_tx_csum = gelic_net_set_tx_csum,
|
|
.get_rx_csum = gelic_net_get_rx_csum,
|
|
.set_rx_csum = gelic_net_set_rx_csum,
|
|
};
|
|
|
|
/**
|
|
* gelic_net_tx_timeout_task - task scheduled by the watchdog timeout
|
|
* function (to be called not under interrupt status)
|
|
* @work: work is context of tx timout task
|
|
*
|
|
* called as task when tx hangs, resets interface (if interface is up)
|
|
*/
|
|
static void gelic_net_tx_timeout_task(struct work_struct *work)
|
|
{
|
|
struct gelic_net_card *card =
|
|
container_of(work, struct gelic_net_card, tx_timeout_task);
|
|
struct net_device *netdev = card->netdev;
|
|
|
|
dev_info(ctodev(card), "%s:Timed out. Restarting... \n", __func__);
|
|
|
|
if (!(netdev->flags & IFF_UP))
|
|
goto out;
|
|
|
|
netif_device_detach(netdev);
|
|
gelic_net_stop(netdev);
|
|
|
|
gelic_net_open(netdev);
|
|
netif_device_attach(netdev);
|
|
|
|
out:
|
|
atomic_dec(&card->tx_timeout_task_counter);
|
|
}
|
|
|
|
/**
|
|
* gelic_net_tx_timeout - called when the tx timeout watchdog kicks in.
|
|
* @netdev: interface device structure
|
|
*
|
|
* called, if tx hangs. Schedules a task that resets the interface
|
|
*/
|
|
static void gelic_net_tx_timeout(struct net_device *netdev)
|
|
{
|
|
struct gelic_net_card *card;
|
|
|
|
card = netdev_priv(netdev);
|
|
atomic_inc(&card->tx_timeout_task_counter);
|
|
if (netdev->flags & IFF_UP)
|
|
schedule_work(&card->tx_timeout_task);
|
|
else
|
|
atomic_dec(&card->tx_timeout_task_counter);
|
|
}
|
|
|
|
/**
|
|
* gelic_net_setup_netdev_ops - initialization of net_device operations
|
|
* @netdev: net_device structure
|
|
*
|
|
* fills out function pointers in the net_device structure
|
|
*/
|
|
static void gelic_net_setup_netdev_ops(struct net_device *netdev)
|
|
{
|
|
netdev->open = &gelic_net_open;
|
|
netdev->stop = &gelic_net_stop;
|
|
netdev->hard_start_xmit = &gelic_net_xmit;
|
|
netdev->set_multicast_list = &gelic_net_set_multi;
|
|
netdev->change_mtu = &gelic_net_change_mtu;
|
|
/* tx watchdog */
|
|
netdev->tx_timeout = &gelic_net_tx_timeout;
|
|
netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT;
|
|
netdev->ethtool_ops = &gelic_net_ethtool_ops;
|
|
}
|
|
|
|
/**
|
|
* gelic_net_setup_netdev - initialization of net_device
|
|
* @card: card structure
|
|
*
|
|
* Returns 0 on success or <0 on failure
|
|
*
|
|
* gelic_net_setup_netdev initializes the net_device structure
|
|
**/
|
|
static int gelic_net_setup_netdev(struct gelic_net_card *card)
|
|
{
|
|
struct net_device *netdev = card->netdev;
|
|
struct sockaddr addr;
|
|
unsigned int i;
|
|
int status;
|
|
u64 v1, v2;
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
SET_NETDEV_DEV(netdev, &card->dev->core);
|
|
spin_lock_init(&card->tx_dma_lock);
|
|
|
|
card->rx_csum = GELIC_NET_RX_CSUM_DEFAULT;
|
|
|
|
gelic_net_setup_netdev_ops(netdev);
|
|
|
|
netif_napi_add(netdev, &card->napi,
|
|
gelic_net_poll, GELIC_NET_NAPI_WEIGHT);
|
|
|
|
netdev->features = NETIF_F_IP_CSUM;
|
|
|
|
status = lv1_net_control(bus_id(card), dev_id(card),
|
|
GELIC_NET_GET_MAC_ADDRESS,
|
|
0, 0, 0, &v1, &v2);
|
|
if (status || !is_valid_ether_addr((u8 *)&v1)) {
|
|
dev_info(ctodev(card),
|
|
"%s:lv1_net_control GET_MAC_ADDR failed %d\n",
|
|
__func__, status);
|
|
return -EINVAL;
|
|
}
|
|
v1 <<= 16;
|
|
memcpy(addr.sa_data, &v1, ETH_ALEN);
|
|
memcpy(netdev->dev_addr, addr.sa_data, ETH_ALEN);
|
|
dev_info(ctodev(card), "MAC addr %s\n",
|
|
print_mac(mac, netdev->dev_addr));
|
|
|
|
card->vlan_index = -1; /* no vlan */
|
|
for (i = 0; i < GELIC_NET_VLAN_MAX; i++) {
|
|
status = lv1_net_control(bus_id(card), dev_id(card),
|
|
GELIC_NET_GET_VLAN_ID,
|
|
i + 1, /* index; one based */
|
|
0, 0, &v1, &v2);
|
|
if (status == GELIC_NET_VLAN_NO_ENTRY) {
|
|
dev_dbg(ctodev(card),
|
|
"GELIC_VLAN_ID no entry:%d, VLAN disabled\n",
|
|
status);
|
|
card->vlan_id[i] = 0;
|
|
} else if (status) {
|
|
dev_dbg(ctodev(card),
|
|
"%s:GELIC_NET_VLAN_ID faild, status=%d\n",
|
|
__func__, status);
|
|
card->vlan_id[i] = 0;
|
|
} else {
|
|
card->vlan_id[i] = (u32)v1;
|
|
dev_dbg(ctodev(card), "vlan_id:%d, %lx\n", i, v1);
|
|
}
|
|
}
|
|
|
|
if (card->vlan_id[GELIC_NET_VLAN_WIRED - 1]) {
|
|
card->vlan_index = GELIC_NET_VLAN_WIRED - 1;
|
|
netdev->hard_header_len += VLAN_HLEN;
|
|
}
|
|
|
|
status = register_netdev(netdev);
|
|
if (status) {
|
|
dev_err(ctodev(card), "%s:Couldn't register net_device: %d\n",
|
|
__func__, status);
|
|
return status;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* gelic_net_alloc_card - allocates net_device and card structure
|
|
*
|
|
* returns the card structure or NULL in case of errors
|
|
*
|
|
* the card and net_device structures are linked to each other
|
|
*/
|
|
static struct gelic_net_card *gelic_net_alloc_card(void)
|
|
{
|
|
struct net_device *netdev;
|
|
struct gelic_net_card *card;
|
|
size_t alloc_size;
|
|
|
|
alloc_size = sizeof (*card) +
|
|
sizeof (struct gelic_net_descr) * GELIC_NET_RX_DESCRIPTORS +
|
|
sizeof (struct gelic_net_descr) * GELIC_NET_TX_DESCRIPTORS;
|
|
/*
|
|
* we assume private data is allocated 32 bytes (or more) aligned
|
|
* so that gelic_net_descr should be 32 bytes aligned.
|
|
* Current alloc_etherdev() does do it because NETDEV_ALIGN
|
|
* is 32.
|
|
* check this assumption here.
|
|
*/
|
|
BUILD_BUG_ON(NETDEV_ALIGN < 32);
|
|
BUILD_BUG_ON(offsetof(struct gelic_net_card, irq_status) % 8);
|
|
BUILD_BUG_ON(offsetof(struct gelic_net_card, descr) % 32);
|
|
|
|
netdev = alloc_etherdev(alloc_size);
|
|
if (!netdev)
|
|
return NULL;
|
|
|
|
card = netdev_priv(netdev);
|
|
card->netdev = netdev;
|
|
INIT_WORK(&card->tx_timeout_task, gelic_net_tx_timeout_task);
|
|
init_waitqueue_head(&card->waitq);
|
|
atomic_set(&card->tx_timeout_task_counter, 0);
|
|
|
|
return card;
|
|
}
|
|
|
|
/**
|
|
* ps3_gelic_driver_probe - add a device to the control of this driver
|
|
*/
|
|
static int ps3_gelic_driver_probe (struct ps3_system_bus_device *dev)
|
|
{
|
|
struct gelic_net_card *card = gelic_net_alloc_card();
|
|
int result;
|
|
|
|
if (!card) {
|
|
dev_info(&dev->core, "gelic_net_alloc_card failed\n");
|
|
result = -ENOMEM;
|
|
goto fail_alloc_card;
|
|
}
|
|
|
|
ps3_system_bus_set_driver_data(dev, card);
|
|
card->dev = dev;
|
|
|
|
result = ps3_open_hv_device(dev);
|
|
|
|
if (result) {
|
|
dev_dbg(&dev->core, "ps3_open_hv_device failed\n");
|
|
goto fail_open;
|
|
}
|
|
|
|
result = ps3_dma_region_create(dev->d_region);
|
|
|
|
if (result) {
|
|
dev_dbg(&dev->core, "ps3_dma_region_create failed(%d)\n",
|
|
result);
|
|
BUG_ON("check region type");
|
|
goto fail_dma_region;
|
|
}
|
|
|
|
result = lv1_net_set_interrupt_status_indicator(bus_id(card),
|
|
dev_id(card),
|
|
ps3_mm_phys_to_lpar(__pa(&card->irq_status)),
|
|
0);
|
|
|
|
if (result) {
|
|
dev_dbg(&dev->core,
|
|
"lv1_net_set_interrupt_status_indicator failed: %s\n",
|
|
ps3_result(result));
|
|
result = -EIO;
|
|
goto fail_status_indicator;
|
|
}
|
|
|
|
result = gelic_net_setup_netdev(card);
|
|
|
|
if (result) {
|
|
dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
|
|
"(%d)\n", __func__, __LINE__, result);
|
|
goto fail_setup_netdev;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail_setup_netdev:
|
|
lv1_net_set_interrupt_status_indicator(bus_id(card),
|
|
bus_id(card),
|
|
0 , 0);
|
|
fail_status_indicator:
|
|
ps3_dma_region_free(dev->d_region);
|
|
fail_dma_region:
|
|
ps3_close_hv_device(dev);
|
|
fail_open:
|
|
ps3_system_bus_set_driver_data(dev, NULL);
|
|
free_netdev(card->netdev);
|
|
fail_alloc_card:
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* ps3_gelic_driver_remove - remove a device from the control of this driver
|
|
*/
|
|
|
|
static int ps3_gelic_driver_remove (struct ps3_system_bus_device *dev)
|
|
{
|
|
struct gelic_net_card *card = ps3_system_bus_get_driver_data(dev);
|
|
|
|
wait_event(card->waitq,
|
|
atomic_read(&card->tx_timeout_task_counter) == 0);
|
|
|
|
lv1_net_set_interrupt_status_indicator(bus_id(card), dev_id(card),
|
|
0 , 0);
|
|
|
|
unregister_netdev(card->netdev);
|
|
free_netdev(card->netdev);
|
|
|
|
ps3_system_bus_set_driver_data(dev, NULL);
|
|
|
|
ps3_dma_region_free(dev->d_region);
|
|
|
|
ps3_close_hv_device(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ps3_system_bus_driver ps3_gelic_driver = {
|
|
.match_id = PS3_MATCH_ID_GELIC,
|
|
.probe = ps3_gelic_driver_probe,
|
|
.remove = ps3_gelic_driver_remove,
|
|
.shutdown = ps3_gelic_driver_remove,
|
|
.core.name = "ps3_gelic_driver",
|
|
.core.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int __init ps3_gelic_driver_init (void)
|
|
{
|
|
return firmware_has_feature(FW_FEATURE_PS3_LV1)
|
|
? ps3_system_bus_driver_register(&ps3_gelic_driver)
|
|
: -ENODEV;
|
|
}
|
|
|
|
static void __exit ps3_gelic_driver_exit (void)
|
|
{
|
|
ps3_system_bus_driver_unregister(&ps3_gelic_driver);
|
|
}
|
|
|
|
module_init (ps3_gelic_driver_init);
|
|
module_exit (ps3_gelic_driver_exit);
|
|
|
|
MODULE_ALIAS(PS3_MODULE_ALIAS_GELIC);
|
|
|