![Ben Hutchings](/assets/img/avatar_default.png)
velocity_open() calls velocity_give_many_rx_descs(), which gives RX descriptors to the NIC, before installing an interrupt handler or calling velocity_init_registers(). I think this is very unsafe and it appears to explain the bug report <http://bugs.debian.org/508527>. On MTU change, velocity_give_many_rx_descs() is again called before velocity_init_registers(). I'm not sure whether this is unsafe but it does look wrong. Therefore, move the calls to velocity_give_many_rx_descs() after request_irq() and velocity_init_registers(). Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Tested-by: Jan Ceuleers <jan.ceuleers@computer.org> Signed-off-by: David S. Miller <davem@davemloft.net>
3470 lines
88 KiB
C
3470 lines
88 KiB
C
/*
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* This code is derived from the VIA reference driver (copyright message
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* below) provided to Red Hat by VIA Networking Technologies, Inc. for
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* addition to the Linux kernel.
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*
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* The code has been merged into one source file, cleaned up to follow
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* Linux coding style, ported to the Linux 2.6 kernel tree and cleaned
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* for 64bit hardware platforms.
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*
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* TODO
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* rx_copybreak/alignment
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* More testing
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*
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* The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk>
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* Additional fixes and clean up: Francois Romieu
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*
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* This source has not been verified for use in safety critical systems.
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*
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* Please direct queries about the revamped driver to the linux-kernel
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* list not VIA.
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*
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* Original code:
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*
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* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
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* All rights reserved.
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*
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* This software may be redistributed and/or modified under
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* the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or
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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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* Author: Chuang Liang-Shing, AJ Jiang
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*
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* Date: Jan 24, 2003
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*
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* MODULE_LICENSE("GPL");
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*
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/pci.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/delay.h>
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#include <linux/timer.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/string.h>
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#include <linux/wait.h>
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#include <linux/io.h>
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#include <linux/if.h>
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#include <linux/uaccess.h>
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#include <linux/proc_fs.h>
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#include <linux/inetdevice.h>
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#include <linux/reboot.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <linux/in.h>
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#include <linux/if_arp.h>
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#include <linux/if_vlan.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/udp.h>
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#include <linux/crc-ccitt.h>
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#include <linux/crc32.h>
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#include "via-velocity.h"
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static int velocity_nics;
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static int msglevel = MSG_LEVEL_INFO;
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/**
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* mac_get_cam_mask - Read a CAM mask
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* @regs: register block for this velocity
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* @mask: buffer to store mask
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*
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* Fetch the mask bits of the selected CAM and store them into the
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* provided mask buffer.
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*/
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static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
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{
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int i;
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/* Select CAM mask */
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BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
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writeb(0, ®s->CAMADDR);
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/* read mask */
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for (i = 0; i < 8; i++)
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*mask++ = readb(&(regs->MARCAM[i]));
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/* disable CAMEN */
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writeb(0, ®s->CAMADDR);
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/* Select mar */
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BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
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}
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/**
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* mac_set_cam_mask - Set a CAM mask
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* @regs: register block for this velocity
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* @mask: CAM mask to load
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*
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* Store a new mask into a CAM
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*/
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static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
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{
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int i;
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/* Select CAM mask */
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BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
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writeb(CAMADDR_CAMEN, ®s->CAMADDR);
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for (i = 0; i < 8; i++)
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writeb(*mask++, &(regs->MARCAM[i]));
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/* disable CAMEN */
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writeb(0, ®s->CAMADDR);
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/* Select mar */
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BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
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}
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static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
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{
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int i;
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/* Select CAM mask */
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BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
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writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR);
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for (i = 0; i < 8; i++)
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writeb(*mask++, &(regs->MARCAM[i]));
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/* disable CAMEN */
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writeb(0, ®s->CAMADDR);
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/* Select mar */
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BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
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}
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/**
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* mac_set_cam - set CAM data
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* @regs: register block of this velocity
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* @idx: Cam index
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* @addr: 2 or 6 bytes of CAM data
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*
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* Load an address or vlan tag into a CAM
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*/
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static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr)
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{
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int i;
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/* Select CAM mask */
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BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
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idx &= (64 - 1);
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writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR);
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for (i = 0; i < 6; i++)
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writeb(*addr++, &(regs->MARCAM[i]));
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BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
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udelay(10);
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writeb(0, ®s->CAMADDR);
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/* Select mar */
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BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
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}
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static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx,
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const u8 *addr)
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{
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/* Select CAM mask */
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BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
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idx &= (64 - 1);
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writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR);
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writew(*((u16 *) addr), ®s->MARCAM[0]);
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BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
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udelay(10);
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writeb(0, ®s->CAMADDR);
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/* Select mar */
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BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
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}
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/**
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* mac_wol_reset - reset WOL after exiting low power
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* @regs: register block of this velocity
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*
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* Called after we drop out of wake on lan mode in order to
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* reset the Wake on lan features. This function doesn't restore
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* the rest of the logic from the result of sleep/wakeup
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*/
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static void mac_wol_reset(struct mac_regs __iomem *regs)
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{
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/* Turn off SWPTAG right after leaving power mode */
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BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW);
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/* clear sticky bits */
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BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
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BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR);
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BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
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/* disable force PME-enable */
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writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr);
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/* disable power-event config bit */
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writew(0xFFFF, ®s->WOLCRClr);
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/* clear power status */
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writew(0xFFFF, ®s->WOLSRClr);
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}
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static const struct ethtool_ops velocity_ethtool_ops;
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/*
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Define module options
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*/
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MODULE_AUTHOR("VIA Networking Technologies, Inc.");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
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#define VELOCITY_PARAM(N, D) \
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static int N[MAX_UNITS] = OPTION_DEFAULT;\
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module_param_array(N, int, NULL, 0); \
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MODULE_PARM_DESC(N, D);
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#define RX_DESC_MIN 64
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#define RX_DESC_MAX 255
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#define RX_DESC_DEF 64
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VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
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#define TX_DESC_MIN 16
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#define TX_DESC_MAX 256
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#define TX_DESC_DEF 64
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VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
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#define RX_THRESH_MIN 0
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#define RX_THRESH_MAX 3
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#define RX_THRESH_DEF 0
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/* rx_thresh[] is used for controlling the receive fifo threshold.
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0: indicate the rxfifo threshold is 128 bytes.
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1: indicate the rxfifo threshold is 512 bytes.
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2: indicate the rxfifo threshold is 1024 bytes.
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3: indicate the rxfifo threshold is store & forward.
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*/
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VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
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#define DMA_LENGTH_MIN 0
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#define DMA_LENGTH_MAX 7
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#define DMA_LENGTH_DEF 6
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/* DMA_length[] is used for controlling the DMA length
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0: 8 DWORDs
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1: 16 DWORDs
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2: 32 DWORDs
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3: 64 DWORDs
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4: 128 DWORDs
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5: 256 DWORDs
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6: SF(flush till emply)
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7: SF(flush till emply)
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*/
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VELOCITY_PARAM(DMA_length, "DMA length");
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#define IP_ALIG_DEF 0
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/* IP_byte_align[] is used for IP header DWORD byte aligned
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0: indicate the IP header won't be DWORD byte aligned.(Default) .
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1: indicate the IP header will be DWORD byte aligned.
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In some enviroment, the IP header should be DWORD byte aligned,
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or the packet will be droped when we receive it. (eg: IPVS)
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*/
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VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
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#define FLOW_CNTL_DEF 1
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#define FLOW_CNTL_MIN 1
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#define FLOW_CNTL_MAX 5
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/* flow_control[] is used for setting the flow control ability of NIC.
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1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
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2: enable TX flow control.
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3: enable RX flow control.
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4: enable RX/TX flow control.
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5: disable
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*/
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VELOCITY_PARAM(flow_control, "Enable flow control ability");
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#define MED_LNK_DEF 0
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#define MED_LNK_MIN 0
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#define MED_LNK_MAX 4
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/* speed_duplex[] is used for setting the speed and duplex mode of NIC.
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0: indicate autonegotiation for both speed and duplex mode
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1: indicate 100Mbps half duplex mode
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2: indicate 100Mbps full duplex mode
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3: indicate 10Mbps half duplex mode
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4: indicate 10Mbps full duplex mode
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Note:
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if EEPROM have been set to the force mode, this option is ignored
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by driver.
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*/
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VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
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#define VAL_PKT_LEN_DEF 0
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/* ValPktLen[] is used for setting the checksum offload ability of NIC.
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0: Receive frame with invalid layer 2 length (Default)
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1: Drop frame with invalid layer 2 length
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*/
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VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
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#define WOL_OPT_DEF 0
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#define WOL_OPT_MIN 0
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#define WOL_OPT_MAX 7
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/* wol_opts[] is used for controlling wake on lan behavior.
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0: Wake up if recevied a magic packet. (Default)
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1: Wake up if link status is on/off.
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2: Wake up if recevied an arp packet.
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4: Wake up if recevied any unicast packet.
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Those value can be sumed up to support more than one option.
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*/
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VELOCITY_PARAM(wol_opts, "Wake On Lan options");
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static int rx_copybreak = 200;
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module_param(rx_copybreak, int, 0644);
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MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
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/*
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* Internal board variants. At the moment we have only one
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*/
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static struct velocity_info_tbl chip_info_table[] = {
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{CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
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{ }
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};
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/*
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* Describe the PCI device identifiers that we support in this
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* device driver. Used for hotplug autoloading.
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*/
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static const struct pci_device_id velocity_id_table[] __devinitdata = {
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{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
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{ }
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};
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MODULE_DEVICE_TABLE(pci, velocity_id_table);
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/**
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* get_chip_name - identifier to name
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* @id: chip identifier
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*
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* Given a chip identifier return a suitable description. Returns
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* a pointer a static string valid while the driver is loaded.
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*/
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static const char __devinit *get_chip_name(enum chip_type chip_id)
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{
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int i;
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for (i = 0; chip_info_table[i].name != NULL; i++)
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if (chip_info_table[i].chip_id == chip_id)
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break;
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return chip_info_table[i].name;
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}
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/**
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* velocity_remove1 - device unplug
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* @pdev: PCI device being removed
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*
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* Device unload callback. Called on an unplug or on module
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* unload for each active device that is present. Disconnects
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* the device from the network layer and frees all the resources
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*/
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static void __devexit velocity_remove1(struct pci_dev *pdev)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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struct velocity_info *vptr = netdev_priv(dev);
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unregister_netdev(dev);
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iounmap(vptr->mac_regs);
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pci_release_regions(pdev);
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pci_disable_device(pdev);
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pci_set_drvdata(pdev, NULL);
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free_netdev(dev);
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velocity_nics--;
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}
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/**
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* velocity_set_int_opt - parser for integer options
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* @opt: pointer to option value
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* @val: value the user requested (or -1 for default)
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* @min: lowest value allowed
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* @max: highest value allowed
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* @def: default value
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* @name: property name
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* @dev: device name
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*
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* Set an integer property in the module options. This function does
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* all the verification and checking as well as reporting so that
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* we don't duplicate code for each option.
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*/
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static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, const char *devname)
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{
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if (val == -1)
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*opt = def;
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else if (val < min || val > max) {
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VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
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devname, name, min, max);
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*opt = def;
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} else {
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VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
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devname, name, val);
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*opt = val;
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}
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}
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/**
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* velocity_set_bool_opt - parser for boolean options
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* @opt: pointer to option value
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* @val: value the user requested (or -1 for default)
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* @def: default value (yes/no)
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* @flag: numeric value to set for true.
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* @name: property name
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* @dev: device name
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*
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* Set a boolean property in the module options. This function does
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* all the verification and checking as well as reporting so that
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* we don't duplicate code for each option.
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*/
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static void __devinit velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag, char *name, const char *devname)
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{
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(*opt) &= (~flag);
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if (val == -1)
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*opt |= (def ? flag : 0);
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else if (val < 0 || val > 1) {
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printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
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devname, name);
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*opt |= (def ? flag : 0);
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} else {
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printk(KERN_INFO "%s: set parameter %s to %s\n",
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devname, name, val ? "TRUE" : "FALSE");
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*opt |= (val ? flag : 0);
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}
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}
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/**
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* velocity_get_options - set options on device
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* @opts: option structure for the device
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* @index: index of option to use in module options array
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* @devname: device name
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*
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* Turn the module and command options into a single structure
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* for the current device
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*/
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static void __devinit velocity_get_options(struct velocity_opt *opts, int index, const char *devname)
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{
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velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
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|
velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
|
|
velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
|
|
velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
|
|
|
|
velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
|
|
velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
|
|
velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
|
|
velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
|
|
velocity_set_int_opt((int *) &opts->wol_opts, wol_opts[index], WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF, "Wake On Lan options", devname);
|
|
opts->numrx = (opts->numrx & ~3);
|
|
}
|
|
|
|
/**
|
|
* velocity_init_cam_filter - initialise CAM
|
|
* @vptr: velocity to program
|
|
*
|
|
* Initialize the content addressable memory used for filters. Load
|
|
* appropriately according to the presence of VLAN
|
|
*/
|
|
static void velocity_init_cam_filter(struct velocity_info *vptr)
|
|
{
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
|
|
/* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
|
|
WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
|
|
WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
|
|
|
|
/* Disable all CAMs */
|
|
memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
|
|
memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
|
|
mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
|
|
mac_set_cam_mask(regs, vptr->mCAMmask);
|
|
|
|
/* Enable VCAMs */
|
|
if (vptr->vlgrp) {
|
|
unsigned int vid, i = 0;
|
|
|
|
if (!vlan_group_get_device(vptr->vlgrp, 0))
|
|
WORD_REG_BITS_ON(MCFG_RTGOPT, ®s->MCFG);
|
|
|
|
for (vid = 1; (vid < VLAN_VID_MASK); vid++) {
|
|
if (vlan_group_get_device(vptr->vlgrp, vid)) {
|
|
mac_set_vlan_cam(regs, i, (u8 *) &vid);
|
|
vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
|
|
if (++i >= VCAM_SIZE)
|
|
break;
|
|
}
|
|
}
|
|
mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
|
|
}
|
|
}
|
|
|
|
static void velocity_vlan_rx_register(struct net_device *dev,
|
|
struct vlan_group *grp)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
|
|
vptr->vlgrp = grp;
|
|
}
|
|
|
|
static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
|
|
spin_lock_irq(&vptr->lock);
|
|
velocity_init_cam_filter(vptr);
|
|
spin_unlock_irq(&vptr->lock);
|
|
}
|
|
|
|
static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
|
|
spin_lock_irq(&vptr->lock);
|
|
vlan_group_set_device(vptr->vlgrp, vid, NULL);
|
|
velocity_init_cam_filter(vptr);
|
|
spin_unlock_irq(&vptr->lock);
|
|
}
|
|
|
|
static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
|
|
{
|
|
vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
|
|
}
|
|
|
|
/**
|
|
* velocity_rx_reset - handle a receive reset
|
|
* @vptr: velocity we are resetting
|
|
*
|
|
* Reset the ownership and status for the receive ring side.
|
|
* Hand all the receive queue to the NIC.
|
|
*/
|
|
static void velocity_rx_reset(struct velocity_info *vptr)
|
|
{
|
|
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
int i;
|
|
|
|
velocity_init_rx_ring_indexes(vptr);
|
|
|
|
/*
|
|
* Init state, all RD entries belong to the NIC
|
|
*/
|
|
for (i = 0; i < vptr->options.numrx; ++i)
|
|
vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
|
|
|
|
writew(vptr->options.numrx, ®s->RBRDU);
|
|
writel(vptr->rx.pool_dma, ®s->RDBaseLo);
|
|
writew(0, ®s->RDIdx);
|
|
writew(vptr->options.numrx - 1, ®s->RDCSize);
|
|
}
|
|
|
|
/**
|
|
* velocity_get_opt_media_mode - get media selection
|
|
* @vptr: velocity adapter
|
|
*
|
|
* Get the media mode stored in EEPROM or module options and load
|
|
* mii_status accordingly. The requested link state information
|
|
* is also returned.
|
|
*/
|
|
static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
|
|
{
|
|
u32 status = 0;
|
|
|
|
switch (vptr->options.spd_dpx) {
|
|
case SPD_DPX_AUTO:
|
|
status = VELOCITY_AUTONEG_ENABLE;
|
|
break;
|
|
case SPD_DPX_100_FULL:
|
|
status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
|
|
break;
|
|
case SPD_DPX_10_FULL:
|
|
status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
|
|
break;
|
|
case SPD_DPX_100_HALF:
|
|
status = VELOCITY_SPEED_100;
|
|
break;
|
|
case SPD_DPX_10_HALF:
|
|
status = VELOCITY_SPEED_10;
|
|
break;
|
|
}
|
|
vptr->mii_status = status;
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* safe_disable_mii_autopoll - autopoll off
|
|
* @regs: velocity registers
|
|
*
|
|
* Turn off the autopoll and wait for it to disable on the chip
|
|
*/
|
|
static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
|
|
{
|
|
u16 ww;
|
|
|
|
/* turn off MAUTO */
|
|
writeb(0, ®s->MIICR);
|
|
for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
|
|
udelay(1);
|
|
if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* enable_mii_autopoll - turn on autopolling
|
|
* @regs: velocity registers
|
|
*
|
|
* Enable the MII link status autopoll feature on the Velocity
|
|
* hardware. Wait for it to enable.
|
|
*/
|
|
static void enable_mii_autopoll(struct mac_regs __iomem *regs)
|
|
{
|
|
int ii;
|
|
|
|
writeb(0, &(regs->MIICR));
|
|
writeb(MIIADR_SWMPL, ®s->MIIADR);
|
|
|
|
for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
|
|
udelay(1);
|
|
if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
|
|
break;
|
|
}
|
|
|
|
writeb(MIICR_MAUTO, ®s->MIICR);
|
|
|
|
for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
|
|
udelay(1);
|
|
if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* velocity_mii_read - read MII data
|
|
* @regs: velocity registers
|
|
* @index: MII register index
|
|
* @data: buffer for received data
|
|
*
|
|
* Perform a single read of an MII 16bit register. Returns zero
|
|
* on success or -ETIMEDOUT if the PHY did not respond.
|
|
*/
|
|
static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
|
|
{
|
|
u16 ww;
|
|
|
|
/*
|
|
* Disable MIICR_MAUTO, so that mii addr can be set normally
|
|
*/
|
|
safe_disable_mii_autopoll(regs);
|
|
|
|
writeb(index, ®s->MIIADR);
|
|
|
|
BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
|
|
|
|
for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
|
|
if (!(readb(®s->MIICR) & MIICR_RCMD))
|
|
break;
|
|
}
|
|
|
|
*data = readw(®s->MIIDATA);
|
|
|
|
enable_mii_autopoll(regs);
|
|
if (ww == W_MAX_TIMEOUT)
|
|
return -ETIMEDOUT;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* mii_check_media_mode - check media state
|
|
* @regs: velocity registers
|
|
*
|
|
* Check the current MII status and determine the link status
|
|
* accordingly
|
|
*/
|
|
static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
|
|
{
|
|
u32 status = 0;
|
|
u16 ANAR;
|
|
|
|
if (!MII_REG_BITS_IS_ON(BMSR_LNK, MII_REG_BMSR, regs))
|
|
status |= VELOCITY_LINK_FAIL;
|
|
|
|
if (MII_REG_BITS_IS_ON(G1000CR_1000FD, MII_REG_G1000CR, regs))
|
|
status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
|
|
else if (MII_REG_BITS_IS_ON(G1000CR_1000, MII_REG_G1000CR, regs))
|
|
status |= (VELOCITY_SPEED_1000);
|
|
else {
|
|
velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
|
|
if (ANAR & ANAR_TXFD)
|
|
status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
|
|
else if (ANAR & ANAR_TX)
|
|
status |= VELOCITY_SPEED_100;
|
|
else if (ANAR & ANAR_10FD)
|
|
status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
|
|
else
|
|
status |= (VELOCITY_SPEED_10);
|
|
}
|
|
|
|
if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
|
|
velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
|
|
if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
|
|
== (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
|
|
if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
|
|
status |= VELOCITY_AUTONEG_ENABLE;
|
|
}
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* velocity_mii_write - write MII data
|
|
* @regs: velocity registers
|
|
* @index: MII register index
|
|
* @data: 16bit data for the MII register
|
|
*
|
|
* Perform a single write to an MII 16bit register. Returns zero
|
|
* on success or -ETIMEDOUT if the PHY did not respond.
|
|
*/
|
|
static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
|
|
{
|
|
u16 ww;
|
|
|
|
/*
|
|
* Disable MIICR_MAUTO, so that mii addr can be set normally
|
|
*/
|
|
safe_disable_mii_autopoll(regs);
|
|
|
|
/* MII reg offset */
|
|
writeb(mii_addr, ®s->MIIADR);
|
|
/* set MII data */
|
|
writew(data, ®s->MIIDATA);
|
|
|
|
/* turn on MIICR_WCMD */
|
|
BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
|
|
|
|
/* W_MAX_TIMEOUT is the timeout period */
|
|
for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
|
|
udelay(5);
|
|
if (!(readb(®s->MIICR) & MIICR_WCMD))
|
|
break;
|
|
}
|
|
enable_mii_autopoll(regs);
|
|
|
|
if (ww == W_MAX_TIMEOUT)
|
|
return -ETIMEDOUT;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* set_mii_flow_control - flow control setup
|
|
* @vptr: velocity interface
|
|
*
|
|
* Set up the flow control on this interface according to
|
|
* the supplied user/eeprom options.
|
|
*/
|
|
static void set_mii_flow_control(struct velocity_info *vptr)
|
|
{
|
|
/*Enable or Disable PAUSE in ANAR */
|
|
switch (vptr->options.flow_cntl) {
|
|
case FLOW_CNTL_TX:
|
|
MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
|
|
MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
|
|
break;
|
|
|
|
case FLOW_CNTL_RX:
|
|
MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
|
|
MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
|
|
break;
|
|
|
|
case FLOW_CNTL_TX_RX:
|
|
MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
|
|
MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
|
|
break;
|
|
|
|
case FLOW_CNTL_DISABLE:
|
|
MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
|
|
MII_REG_BITS_OFF(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* mii_set_auto_on - autonegotiate on
|
|
* @vptr: velocity
|
|
*
|
|
* Enable autonegotation on this interface
|
|
*/
|
|
static void mii_set_auto_on(struct velocity_info *vptr)
|
|
{
|
|
if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs))
|
|
MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
|
|
else
|
|
MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
|
|
}
|
|
|
|
static u32 check_connection_type(struct mac_regs __iomem *regs)
|
|
{
|
|
u32 status = 0;
|
|
u8 PHYSR0;
|
|
u16 ANAR;
|
|
PHYSR0 = readb(®s->PHYSR0);
|
|
|
|
/*
|
|
if (!(PHYSR0 & PHYSR0_LINKGD))
|
|
status|=VELOCITY_LINK_FAIL;
|
|
*/
|
|
|
|
if (PHYSR0 & PHYSR0_FDPX)
|
|
status |= VELOCITY_DUPLEX_FULL;
|
|
|
|
if (PHYSR0 & PHYSR0_SPDG)
|
|
status |= VELOCITY_SPEED_1000;
|
|
else if (PHYSR0 & PHYSR0_SPD10)
|
|
status |= VELOCITY_SPEED_10;
|
|
else
|
|
status |= VELOCITY_SPEED_100;
|
|
|
|
if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
|
|
velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
|
|
if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
|
|
== (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
|
|
if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
|
|
status |= VELOCITY_AUTONEG_ENABLE;
|
|
}
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* velocity_set_media_mode - set media mode
|
|
* @mii_status: old MII link state
|
|
*
|
|
* Check the media link state and configure the flow control
|
|
* PHY and also velocity hardware setup accordingly. In particular
|
|
* we need to set up CD polling and frame bursting.
|
|
*/
|
|
static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
|
|
{
|
|
u32 curr_status;
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
|
|
vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
|
|
curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
|
|
|
|
/* Set mii link status */
|
|
set_mii_flow_control(vptr);
|
|
|
|
/*
|
|
Check if new status is consisent with current status
|
|
if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) ||
|
|
(mii_status==curr_status)) {
|
|
vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
|
|
vptr->mii_status=check_connection_type(vptr->mac_regs);
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
|
|
return 0;
|
|
}
|
|
*/
|
|
|
|
if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
|
|
MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
|
|
|
|
/*
|
|
* If connection type is AUTO
|
|
*/
|
|
if (mii_status & VELOCITY_AUTONEG_ENABLE) {
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
|
|
/* clear force MAC mode bit */
|
|
BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
|
|
/* set duplex mode of MAC according to duplex mode of MII */
|
|
MII_REG_BITS_ON(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10, MII_REG_ANAR, vptr->mac_regs);
|
|
MII_REG_BITS_ON(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
|
|
MII_REG_BITS_ON(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs);
|
|
|
|
/* enable AUTO-NEGO mode */
|
|
mii_set_auto_on(vptr);
|
|
} else {
|
|
u16 ANAR;
|
|
u8 CHIPGCR;
|
|
|
|
/*
|
|
* 1. if it's 3119, disable frame bursting in halfduplex mode
|
|
* and enable it in fullduplex mode
|
|
* 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
|
|
* 3. only enable CD heart beat counter in 10HD mode
|
|
*/
|
|
|
|
/* set force MAC mode bit */
|
|
BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
|
|
|
|
CHIPGCR = readb(®s->CHIPGCR);
|
|
CHIPGCR &= ~CHIPGCR_FCGMII;
|
|
|
|
if (mii_status & VELOCITY_DUPLEX_FULL) {
|
|
CHIPGCR |= CHIPGCR_FCFDX;
|
|
writeb(CHIPGCR, ®s->CHIPGCR);
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
|
|
if (vptr->rev_id < REV_ID_VT3216_A0)
|
|
BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
|
|
} else {
|
|
CHIPGCR &= ~CHIPGCR_FCFDX;
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
|
|
writeb(CHIPGCR, ®s->CHIPGCR);
|
|
if (vptr->rev_id < REV_ID_VT3216_A0)
|
|
BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
|
|
}
|
|
|
|
MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
|
|
|
|
if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
|
|
BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
|
|
else
|
|
BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
|
|
|
|
/* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
|
|
velocity_mii_read(vptr->mac_regs, MII_REG_ANAR, &ANAR);
|
|
ANAR &= (~(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10));
|
|
if (mii_status & VELOCITY_SPEED_100) {
|
|
if (mii_status & VELOCITY_DUPLEX_FULL)
|
|
ANAR |= ANAR_TXFD;
|
|
else
|
|
ANAR |= ANAR_TX;
|
|
} else {
|
|
if (mii_status & VELOCITY_DUPLEX_FULL)
|
|
ANAR |= ANAR_10FD;
|
|
else
|
|
ANAR |= ANAR_10;
|
|
}
|
|
velocity_mii_write(vptr->mac_regs, MII_REG_ANAR, ANAR);
|
|
/* enable AUTO-NEGO mode */
|
|
mii_set_auto_on(vptr);
|
|
/* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
|
|
}
|
|
/* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
|
|
/* vptr->mii_status=check_connection_type(vptr->mac_regs); */
|
|
return VELOCITY_LINK_CHANGE;
|
|
}
|
|
|
|
/**
|
|
* velocity_print_link_status - link status reporting
|
|
* @vptr: velocity to report on
|
|
*
|
|
* Turn the link status of the velocity card into a kernel log
|
|
* description of the new link state, detailing speed and duplex
|
|
* status
|
|
*/
|
|
static void velocity_print_link_status(struct velocity_info *vptr)
|
|
{
|
|
|
|
if (vptr->mii_status & VELOCITY_LINK_FAIL) {
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
|
|
} else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
|
|
|
|
if (vptr->mii_status & VELOCITY_SPEED_1000)
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
|
|
else if (vptr->mii_status & VELOCITY_SPEED_100)
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
|
|
else
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
|
|
|
|
if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
|
|
else
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
|
|
} else {
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
|
|
switch (vptr->options.spd_dpx) {
|
|
case SPD_DPX_100_HALF:
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
|
|
break;
|
|
case SPD_DPX_100_FULL:
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
|
|
break;
|
|
case SPD_DPX_10_HALF:
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
|
|
break;
|
|
case SPD_DPX_10_FULL:
|
|
VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* enable_flow_control_ability - flow control
|
|
* @vptr: veloity to configure
|
|
*
|
|
* Set up flow control according to the flow control options
|
|
* determined by the eeprom/configuration.
|
|
*/
|
|
static void enable_flow_control_ability(struct velocity_info *vptr)
|
|
{
|
|
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
|
|
switch (vptr->options.flow_cntl) {
|
|
|
|
case FLOW_CNTL_DEFAULT:
|
|
if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
|
|
writel(CR0_FDXRFCEN, ®s->CR0Set);
|
|
else
|
|
writel(CR0_FDXRFCEN, ®s->CR0Clr);
|
|
|
|
if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
|
|
writel(CR0_FDXTFCEN, ®s->CR0Set);
|
|
else
|
|
writel(CR0_FDXTFCEN, ®s->CR0Clr);
|
|
break;
|
|
|
|
case FLOW_CNTL_TX:
|
|
writel(CR0_FDXTFCEN, ®s->CR0Set);
|
|
writel(CR0_FDXRFCEN, ®s->CR0Clr);
|
|
break;
|
|
|
|
case FLOW_CNTL_RX:
|
|
writel(CR0_FDXRFCEN, ®s->CR0Set);
|
|
writel(CR0_FDXTFCEN, ®s->CR0Clr);
|
|
break;
|
|
|
|
case FLOW_CNTL_TX_RX:
|
|
writel(CR0_FDXTFCEN, ®s->CR0Set);
|
|
writel(CR0_FDXRFCEN, ®s->CR0Set);
|
|
break;
|
|
|
|
case FLOW_CNTL_DISABLE:
|
|
writel(CR0_FDXRFCEN, ®s->CR0Clr);
|
|
writel(CR0_FDXTFCEN, ®s->CR0Clr);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* velocity_soft_reset - soft reset
|
|
* @vptr: velocity to reset
|
|
*
|
|
* Kick off a soft reset of the velocity adapter and then poll
|
|
* until the reset sequence has completed before returning.
|
|
*/
|
|
static int velocity_soft_reset(struct velocity_info *vptr)
|
|
{
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
int i = 0;
|
|
|
|
writel(CR0_SFRST, ®s->CR0Set);
|
|
|
|
for (i = 0; i < W_MAX_TIMEOUT; i++) {
|
|
udelay(5);
|
|
if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
|
|
break;
|
|
}
|
|
|
|
if (i == W_MAX_TIMEOUT) {
|
|
writel(CR0_FORSRST, ®s->CR0Set);
|
|
/* FIXME: PCI POSTING */
|
|
/* delay 2ms */
|
|
mdelay(2);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* velocity_set_multi - filter list change callback
|
|
* @dev: network device
|
|
*
|
|
* Called by the network layer when the filter lists need to change
|
|
* for a velocity adapter. Reload the CAMs with the new address
|
|
* filter ruleset.
|
|
*/
|
|
static void velocity_set_multi(struct net_device *dev)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
u8 rx_mode;
|
|
int i;
|
|
struct dev_mc_list *mclist;
|
|
|
|
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
|
|
writel(0xffffffff, ®s->MARCAM[0]);
|
|
writel(0xffffffff, ®s->MARCAM[4]);
|
|
rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
|
|
} else if ((dev->mc_count > vptr->multicast_limit) ||
|
|
(dev->flags & IFF_ALLMULTI)) {
|
|
writel(0xffffffff, ®s->MARCAM[0]);
|
|
writel(0xffffffff, ®s->MARCAM[4]);
|
|
rx_mode = (RCR_AM | RCR_AB);
|
|
} else {
|
|
int offset = MCAM_SIZE - vptr->multicast_limit;
|
|
mac_get_cam_mask(regs, vptr->mCAMmask);
|
|
|
|
for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
|
|
mac_set_cam(regs, i + offset, mclist->dmi_addr);
|
|
vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
|
|
}
|
|
|
|
mac_set_cam_mask(regs, vptr->mCAMmask);
|
|
rx_mode = RCR_AM | RCR_AB | RCR_AP;
|
|
}
|
|
if (dev->mtu > 1500)
|
|
rx_mode |= RCR_AL;
|
|
|
|
BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
|
|
|
|
}
|
|
|
|
/*
|
|
* MII access , media link mode setting functions
|
|
*/
|
|
|
|
/**
|
|
* mii_init - set up MII
|
|
* @vptr: velocity adapter
|
|
* @mii_status: links tatus
|
|
*
|
|
* Set up the PHY for the current link state.
|
|
*/
|
|
static void mii_init(struct velocity_info *vptr, u32 mii_status)
|
|
{
|
|
u16 BMCR;
|
|
|
|
switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
|
|
case PHYID_CICADA_CS8201:
|
|
/*
|
|
* Reset to hardware default
|
|
*/
|
|
MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
|
|
/*
|
|
* Turn on ECHODIS bit in NWay-forced full mode and turn it
|
|
* off it in NWay-forced half mode for NWay-forced v.s.
|
|
* legacy-forced issue.
|
|
*/
|
|
if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
|
|
MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
|
|
else
|
|
MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
|
|
/*
|
|
* Turn on Link/Activity LED enable bit for CIS8201
|
|
*/
|
|
MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
|
|
break;
|
|
case PHYID_VT3216_32BIT:
|
|
case PHYID_VT3216_64BIT:
|
|
/*
|
|
* Reset to hardware default
|
|
*/
|
|
MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
|
|
/*
|
|
* Turn on ECHODIS bit in NWay-forced full mode and turn it
|
|
* off it in NWay-forced half mode for NWay-forced v.s.
|
|
* legacy-forced issue
|
|
*/
|
|
if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
|
|
MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
|
|
else
|
|
MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
|
|
break;
|
|
|
|
case PHYID_MARVELL_1000:
|
|
case PHYID_MARVELL_1000S:
|
|
/*
|
|
* Assert CRS on Transmit
|
|
*/
|
|
MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
|
|
/*
|
|
* Reset to hardware default
|
|
*/
|
|
MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
|
|
break;
|
|
default:
|
|
;
|
|
}
|
|
velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
|
|
if (BMCR & BMCR_ISO) {
|
|
BMCR &= ~BMCR_ISO;
|
|
velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* setup_queue_timers - Setup interrupt timers
|
|
*
|
|
* Setup interrupt frequency during suppression (timeout if the frame
|
|
* count isn't filled).
|
|
*/
|
|
static void setup_queue_timers(struct velocity_info *vptr)
|
|
{
|
|
/* Only for newer revisions */
|
|
if (vptr->rev_id >= REV_ID_VT3216_A0) {
|
|
u8 txqueue_timer = 0;
|
|
u8 rxqueue_timer = 0;
|
|
|
|
if (vptr->mii_status & (VELOCITY_SPEED_1000 |
|
|
VELOCITY_SPEED_100)) {
|
|
txqueue_timer = vptr->options.txqueue_timer;
|
|
rxqueue_timer = vptr->options.rxqueue_timer;
|
|
}
|
|
|
|
writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
|
|
writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
|
|
}
|
|
}
|
|
/**
|
|
* setup_adaptive_interrupts - Setup interrupt suppression
|
|
*
|
|
* @vptr velocity adapter
|
|
*
|
|
* The velocity is able to suppress interrupt during high interrupt load.
|
|
* This function turns on that feature.
|
|
*/
|
|
static void setup_adaptive_interrupts(struct velocity_info *vptr)
|
|
{
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
u16 tx_intsup = vptr->options.tx_intsup;
|
|
u16 rx_intsup = vptr->options.rx_intsup;
|
|
|
|
/* Setup default interrupt mask (will be changed below) */
|
|
vptr->int_mask = INT_MASK_DEF;
|
|
|
|
/* Set Tx Interrupt Suppression Threshold */
|
|
writeb(CAMCR_PS0, ®s->CAMCR);
|
|
if (tx_intsup != 0) {
|
|
vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
|
|
ISR_PTX2I | ISR_PTX3I);
|
|
writew(tx_intsup, ®s->ISRCTL);
|
|
} else
|
|
writew(ISRCTL_TSUPDIS, ®s->ISRCTL);
|
|
|
|
/* Set Rx Interrupt Suppression Threshold */
|
|
writeb(CAMCR_PS1, ®s->CAMCR);
|
|
if (rx_intsup != 0) {
|
|
vptr->int_mask &= ~ISR_PRXI;
|
|
writew(rx_intsup, ®s->ISRCTL);
|
|
} else
|
|
writew(ISRCTL_RSUPDIS, ®s->ISRCTL);
|
|
|
|
/* Select page to interrupt hold timer */
|
|
writeb(0, ®s->CAMCR);
|
|
}
|
|
|
|
/**
|
|
* velocity_init_registers - initialise MAC registers
|
|
* @vptr: velocity to init
|
|
* @type: type of initialisation (hot or cold)
|
|
*
|
|
* Initialise the MAC on a reset or on first set up on the
|
|
* hardware.
|
|
*/
|
|
static void velocity_init_registers(struct velocity_info *vptr,
|
|
enum velocity_init_type type)
|
|
{
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
int i, mii_status;
|
|
|
|
mac_wol_reset(regs);
|
|
|
|
switch (type) {
|
|
case VELOCITY_INIT_RESET:
|
|
case VELOCITY_INIT_WOL:
|
|
|
|
netif_stop_queue(vptr->dev);
|
|
|
|
/*
|
|
* Reset RX to prevent RX pointer not on the 4X location
|
|
*/
|
|
velocity_rx_reset(vptr);
|
|
mac_rx_queue_run(regs);
|
|
mac_rx_queue_wake(regs);
|
|
|
|
mii_status = velocity_get_opt_media_mode(vptr);
|
|
if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
|
|
velocity_print_link_status(vptr);
|
|
if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
|
|
netif_wake_queue(vptr->dev);
|
|
}
|
|
|
|
enable_flow_control_ability(vptr);
|
|
|
|
mac_clear_isr(regs);
|
|
writel(CR0_STOP, ®s->CR0Clr);
|
|
writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
|
|
®s->CR0Set);
|
|
|
|
break;
|
|
|
|
case VELOCITY_INIT_COLD:
|
|
default:
|
|
/*
|
|
* Do reset
|
|
*/
|
|
velocity_soft_reset(vptr);
|
|
mdelay(5);
|
|
|
|
mac_eeprom_reload(regs);
|
|
for (i = 0; i < 6; i++)
|
|
writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
|
|
|
|
/*
|
|
* clear Pre_ACPI bit.
|
|
*/
|
|
BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
|
|
mac_set_rx_thresh(regs, vptr->options.rx_thresh);
|
|
mac_set_dma_length(regs, vptr->options.DMA_length);
|
|
|
|
writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
|
|
/*
|
|
* Back off algorithm use original IEEE standard
|
|
*/
|
|
BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
|
|
|
|
/*
|
|
* Init CAM filter
|
|
*/
|
|
velocity_init_cam_filter(vptr);
|
|
|
|
/*
|
|
* Set packet filter: Receive directed and broadcast address
|
|
*/
|
|
velocity_set_multi(vptr->dev);
|
|
|
|
/*
|
|
* Enable MII auto-polling
|
|
*/
|
|
enable_mii_autopoll(regs);
|
|
|
|
setup_adaptive_interrupts(vptr);
|
|
|
|
writel(vptr->rx.pool_dma, ®s->RDBaseLo);
|
|
writew(vptr->options.numrx - 1, ®s->RDCSize);
|
|
mac_rx_queue_run(regs);
|
|
mac_rx_queue_wake(regs);
|
|
|
|
writew(vptr->options.numtx - 1, ®s->TDCSize);
|
|
|
|
for (i = 0; i < vptr->tx.numq; i++) {
|
|
writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]);
|
|
mac_tx_queue_run(regs, i);
|
|
}
|
|
|
|
init_flow_control_register(vptr);
|
|
|
|
writel(CR0_STOP, ®s->CR0Clr);
|
|
writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
|
|
|
|
mii_status = velocity_get_opt_media_mode(vptr);
|
|
netif_stop_queue(vptr->dev);
|
|
|
|
mii_init(vptr, mii_status);
|
|
|
|
if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
|
|
velocity_print_link_status(vptr);
|
|
if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
|
|
netif_wake_queue(vptr->dev);
|
|
}
|
|
|
|
enable_flow_control_ability(vptr);
|
|
mac_hw_mibs_init(regs);
|
|
mac_write_int_mask(vptr->int_mask, regs);
|
|
mac_clear_isr(regs);
|
|
|
|
}
|
|
}
|
|
|
|
static void velocity_give_many_rx_descs(struct velocity_info *vptr)
|
|
{
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
int avail, dirty, unusable;
|
|
|
|
/*
|
|
* RD number must be equal to 4X per hardware spec
|
|
* (programming guide rev 1.20, p.13)
|
|
*/
|
|
if (vptr->rx.filled < 4)
|
|
return;
|
|
|
|
wmb();
|
|
|
|
unusable = vptr->rx.filled & 0x0003;
|
|
dirty = vptr->rx.dirty - unusable;
|
|
for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
|
|
dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
|
|
vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
|
|
}
|
|
|
|
writew(vptr->rx.filled & 0xfffc, ®s->RBRDU);
|
|
vptr->rx.filled = unusable;
|
|
}
|
|
|
|
/**
|
|
* velocity_init_dma_rings - set up DMA rings
|
|
* @vptr: Velocity to set up
|
|
*
|
|
* Allocate PCI mapped DMA rings for the receive and transmit layer
|
|
* to use.
|
|
*/
|
|
static int velocity_init_dma_rings(struct velocity_info *vptr)
|
|
{
|
|
struct velocity_opt *opt = &vptr->options;
|
|
const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
|
|
const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
|
|
struct pci_dev *pdev = vptr->pdev;
|
|
dma_addr_t pool_dma;
|
|
void *pool;
|
|
unsigned int i;
|
|
|
|
/*
|
|
* Allocate all RD/TD rings a single pool.
|
|
*
|
|
* pci_alloc_consistent() fulfills the requirement for 64 bytes
|
|
* alignment
|
|
*/
|
|
pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
|
|
rx_ring_size, &pool_dma);
|
|
if (!pool) {
|
|
dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
|
|
vptr->dev->name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
vptr->rx.ring = pool;
|
|
vptr->rx.pool_dma = pool_dma;
|
|
|
|
pool += rx_ring_size;
|
|
pool_dma += rx_ring_size;
|
|
|
|
for (i = 0; i < vptr->tx.numq; i++) {
|
|
vptr->tx.rings[i] = pool;
|
|
vptr->tx.pool_dma[i] = pool_dma;
|
|
pool += tx_ring_size;
|
|
pool_dma += tx_ring_size;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
|
|
{
|
|
vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
|
|
}
|
|
|
|
/**
|
|
* velocity_alloc_rx_buf - allocate aligned receive buffer
|
|
* @vptr: velocity
|
|
* @idx: ring index
|
|
*
|
|
* Allocate a new full sized buffer for the reception of a frame and
|
|
* map it into PCI space for the hardware to use. The hardware
|
|
* requires *64* byte alignment of the buffer which makes life
|
|
* less fun than would be ideal.
|
|
*/
|
|
static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
|
|
{
|
|
struct rx_desc *rd = &(vptr->rx.ring[idx]);
|
|
struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
|
|
|
|
rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64);
|
|
if (rd_info->skb == NULL)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* Do the gymnastics to get the buffer head for data at
|
|
* 64byte alignment.
|
|
*/
|
|
skb_reserve(rd_info->skb,
|
|
64 - ((unsigned long) rd_info->skb->data & 63));
|
|
rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
|
|
vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
|
|
|
|
/*
|
|
* Fill in the descriptor to match
|
|
*/
|
|
|
|
*((u32 *) & (rd->rdesc0)) = 0;
|
|
rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
|
|
rd->pa_low = cpu_to_le32(rd_info->skb_dma);
|
|
rd->pa_high = 0;
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int velocity_rx_refill(struct velocity_info *vptr)
|
|
{
|
|
int dirty = vptr->rx.dirty, done = 0;
|
|
|
|
do {
|
|
struct rx_desc *rd = vptr->rx.ring + dirty;
|
|
|
|
/* Fine for an all zero Rx desc at init time as well */
|
|
if (rd->rdesc0.len & OWNED_BY_NIC)
|
|
break;
|
|
|
|
if (!vptr->rx.info[dirty].skb) {
|
|
if (velocity_alloc_rx_buf(vptr, dirty) < 0)
|
|
break;
|
|
}
|
|
done++;
|
|
dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
|
|
} while (dirty != vptr->rx.curr);
|
|
|
|
if (done) {
|
|
vptr->rx.dirty = dirty;
|
|
vptr->rx.filled += done;
|
|
}
|
|
|
|
return done;
|
|
}
|
|
|
|
/**
|
|
* velocity_free_rd_ring - free receive ring
|
|
* @vptr: velocity to clean up
|
|
*
|
|
* Free the receive buffers for each ring slot and any
|
|
* attached socket buffers that need to go away.
|
|
*/
|
|
static void velocity_free_rd_ring(struct velocity_info *vptr)
|
|
{
|
|
int i;
|
|
|
|
if (vptr->rx.info == NULL)
|
|
return;
|
|
|
|
for (i = 0; i < vptr->options.numrx; i++) {
|
|
struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
|
|
struct rx_desc *rd = vptr->rx.ring + i;
|
|
|
|
memset(rd, 0, sizeof(*rd));
|
|
|
|
if (!rd_info->skb)
|
|
continue;
|
|
pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
|
|
PCI_DMA_FROMDEVICE);
|
|
rd_info->skb_dma = 0;
|
|
|
|
dev_kfree_skb(rd_info->skb);
|
|
rd_info->skb = NULL;
|
|
}
|
|
|
|
kfree(vptr->rx.info);
|
|
vptr->rx.info = NULL;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* velocity_init_rd_ring - set up receive ring
|
|
* @vptr: velocity to configure
|
|
*
|
|
* Allocate and set up the receive buffers for each ring slot and
|
|
* assign them to the network adapter.
|
|
*/
|
|
static int velocity_init_rd_ring(struct velocity_info *vptr)
|
|
{
|
|
int ret = -ENOMEM;
|
|
|
|
vptr->rx.info = kcalloc(vptr->options.numrx,
|
|
sizeof(struct velocity_rd_info), GFP_KERNEL);
|
|
if (!vptr->rx.info)
|
|
goto out;
|
|
|
|
velocity_init_rx_ring_indexes(vptr);
|
|
|
|
if (velocity_rx_refill(vptr) != vptr->options.numrx) {
|
|
VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
|
|
"%s: failed to allocate RX buffer.\n", vptr->dev->name);
|
|
velocity_free_rd_ring(vptr);
|
|
goto out;
|
|
}
|
|
|
|
ret = 0;
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* velocity_init_td_ring - set up transmit ring
|
|
* @vptr: velocity
|
|
*
|
|
* Set up the transmit ring and chain the ring pointers together.
|
|
* Returns zero on success or a negative posix errno code for
|
|
* failure.
|
|
*/
|
|
static int velocity_init_td_ring(struct velocity_info *vptr)
|
|
{
|
|
int j;
|
|
|
|
/* Init the TD ring entries */
|
|
for (j = 0; j < vptr->tx.numq; j++) {
|
|
|
|
vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
|
|
sizeof(struct velocity_td_info),
|
|
GFP_KERNEL);
|
|
if (!vptr->tx.infos[j]) {
|
|
while (--j >= 0)
|
|
kfree(vptr->tx.infos[j]);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* velocity_free_dma_rings - free PCI ring pointers
|
|
* @vptr: Velocity to free from
|
|
*
|
|
* Clean up the PCI ring buffers allocated to this velocity.
|
|
*/
|
|
static void velocity_free_dma_rings(struct velocity_info *vptr)
|
|
{
|
|
const int size = vptr->options.numrx * sizeof(struct rx_desc) +
|
|
vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
|
|
|
|
pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
|
|
}
|
|
|
|
|
|
static int velocity_init_rings(struct velocity_info *vptr, int mtu)
|
|
{
|
|
int ret;
|
|
|
|
velocity_set_rxbufsize(vptr, mtu);
|
|
|
|
ret = velocity_init_dma_rings(vptr);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = velocity_init_rd_ring(vptr);
|
|
if (ret < 0)
|
|
goto err_free_dma_rings_0;
|
|
|
|
ret = velocity_init_td_ring(vptr);
|
|
if (ret < 0)
|
|
goto err_free_rd_ring_1;
|
|
out:
|
|
return ret;
|
|
|
|
err_free_rd_ring_1:
|
|
velocity_free_rd_ring(vptr);
|
|
err_free_dma_rings_0:
|
|
velocity_free_dma_rings(vptr);
|
|
goto out;
|
|
}
|
|
|
|
/**
|
|
* velocity_free_tx_buf - free transmit buffer
|
|
* @vptr: velocity
|
|
* @tdinfo: buffer
|
|
*
|
|
* Release an transmit buffer. If the buffer was preallocated then
|
|
* recycle it, if not then unmap the buffer.
|
|
*/
|
|
static void velocity_free_tx_buf(struct velocity_info *vptr,
|
|
struct velocity_td_info *tdinfo, struct tx_desc *td)
|
|
{
|
|
struct sk_buff *skb = tdinfo->skb;
|
|
|
|
/*
|
|
* Don't unmap the pre-allocated tx_bufs
|
|
*/
|
|
if (tdinfo->skb_dma) {
|
|
int i;
|
|
|
|
for (i = 0; i < tdinfo->nskb_dma; i++) {
|
|
size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
|
|
|
|
/* For scatter-gather */
|
|
if (skb_shinfo(skb)->nr_frags > 0)
|
|
pktlen = max_t(size_t, pktlen,
|
|
td->td_buf[i].size & ~TD_QUEUE);
|
|
|
|
pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i],
|
|
le16_to_cpu(pktlen), PCI_DMA_TODEVICE);
|
|
}
|
|
}
|
|
dev_kfree_skb_irq(skb);
|
|
tdinfo->skb = NULL;
|
|
}
|
|
|
|
|
|
/*
|
|
* FIXME: could we merge this with velocity_free_tx_buf ?
|
|
*/
|
|
static void velocity_free_td_ring_entry(struct velocity_info *vptr,
|
|
int q, int n)
|
|
{
|
|
struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
|
|
int i;
|
|
|
|
if (td_info == NULL)
|
|
return;
|
|
|
|
if (td_info->skb) {
|
|
for (i = 0; i < td_info->nskb_dma; i++) {
|
|
if (td_info->skb_dma[i]) {
|
|
pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
|
|
td_info->skb->len, PCI_DMA_TODEVICE);
|
|
td_info->skb_dma[i] = 0;
|
|
}
|
|
}
|
|
dev_kfree_skb(td_info->skb);
|
|
td_info->skb = NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* velocity_free_td_ring - free td ring
|
|
* @vptr: velocity
|
|
*
|
|
* Free up the transmit ring for this particular velocity adapter.
|
|
* We free the ring contents but not the ring itself.
|
|
*/
|
|
static void velocity_free_td_ring(struct velocity_info *vptr)
|
|
{
|
|
int i, j;
|
|
|
|
for (j = 0; j < vptr->tx.numq; j++) {
|
|
if (vptr->tx.infos[j] == NULL)
|
|
continue;
|
|
for (i = 0; i < vptr->options.numtx; i++)
|
|
velocity_free_td_ring_entry(vptr, j, i);
|
|
|
|
kfree(vptr->tx.infos[j]);
|
|
vptr->tx.infos[j] = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
static void velocity_free_rings(struct velocity_info *vptr)
|
|
{
|
|
velocity_free_td_ring(vptr);
|
|
velocity_free_rd_ring(vptr);
|
|
velocity_free_dma_rings(vptr);
|
|
}
|
|
|
|
/**
|
|
* velocity_error - handle error from controller
|
|
* @vptr: velocity
|
|
* @status: card status
|
|
*
|
|
* Process an error report from the hardware and attempt to recover
|
|
* the card itself. At the moment we cannot recover from some
|
|
* theoretically impossible errors but this could be fixed using
|
|
* the pci_device_failed logic to bounce the hardware
|
|
*
|
|
*/
|
|
static void velocity_error(struct velocity_info *vptr, int status)
|
|
{
|
|
|
|
if (status & ISR_TXSTLI) {
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
|
|
printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
|
|
BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
|
|
writew(TRDCSR_RUN, ®s->TDCSRClr);
|
|
netif_stop_queue(vptr->dev);
|
|
|
|
/* FIXME: port over the pci_device_failed code and use it
|
|
here */
|
|
}
|
|
|
|
if (status & ISR_SRCI) {
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
int linked;
|
|
|
|
if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
|
|
vptr->mii_status = check_connection_type(regs);
|
|
|
|
/*
|
|
* If it is a 3119, disable frame bursting in
|
|
* halfduplex mode and enable it in fullduplex
|
|
* mode
|
|
*/
|
|
if (vptr->rev_id < REV_ID_VT3216_A0) {
|
|
if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
|
|
BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
|
|
else
|
|
BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
|
|
}
|
|
/*
|
|
* Only enable CD heart beat counter in 10HD mode
|
|
*/
|
|
if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
|
|
BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
|
|
else
|
|
BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
|
|
|
|
setup_queue_timers(vptr);
|
|
}
|
|
/*
|
|
* Get link status from PHYSR0
|
|
*/
|
|
linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
|
|
|
|
if (linked) {
|
|
vptr->mii_status &= ~VELOCITY_LINK_FAIL;
|
|
netif_carrier_on(vptr->dev);
|
|
} else {
|
|
vptr->mii_status |= VELOCITY_LINK_FAIL;
|
|
netif_carrier_off(vptr->dev);
|
|
}
|
|
|
|
velocity_print_link_status(vptr);
|
|
enable_flow_control_ability(vptr);
|
|
|
|
/*
|
|
* Re-enable auto-polling because SRCI will disable
|
|
* auto-polling
|
|
*/
|
|
|
|
enable_mii_autopoll(regs);
|
|
|
|
if (vptr->mii_status & VELOCITY_LINK_FAIL)
|
|
netif_stop_queue(vptr->dev);
|
|
else
|
|
netif_wake_queue(vptr->dev);
|
|
|
|
};
|
|
if (status & ISR_MIBFI)
|
|
velocity_update_hw_mibs(vptr);
|
|
if (status & ISR_LSTEI)
|
|
mac_rx_queue_wake(vptr->mac_regs);
|
|
}
|
|
|
|
/**
|
|
* tx_srv - transmit interrupt service
|
|
* @vptr; Velocity
|
|
* @status:
|
|
*
|
|
* Scan the queues looking for transmitted packets that
|
|
* we can complete and clean up. Update any statistics as
|
|
* necessary/
|
|
*/
|
|
static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
|
|
{
|
|
struct tx_desc *td;
|
|
int qnum;
|
|
int full = 0;
|
|
int idx;
|
|
int works = 0;
|
|
struct velocity_td_info *tdinfo;
|
|
struct net_device_stats *stats = &vptr->dev->stats;
|
|
|
|
for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
|
|
for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
|
|
idx = (idx + 1) % vptr->options.numtx) {
|
|
|
|
/*
|
|
* Get Tx Descriptor
|
|
*/
|
|
td = &(vptr->tx.rings[qnum][idx]);
|
|
tdinfo = &(vptr->tx.infos[qnum][idx]);
|
|
|
|
if (td->tdesc0.len & OWNED_BY_NIC)
|
|
break;
|
|
|
|
if ((works++ > 15))
|
|
break;
|
|
|
|
if (td->tdesc0.TSR & TSR0_TERR) {
|
|
stats->tx_errors++;
|
|
stats->tx_dropped++;
|
|
if (td->tdesc0.TSR & TSR0_CDH)
|
|
stats->tx_heartbeat_errors++;
|
|
if (td->tdesc0.TSR & TSR0_CRS)
|
|
stats->tx_carrier_errors++;
|
|
if (td->tdesc0.TSR & TSR0_ABT)
|
|
stats->tx_aborted_errors++;
|
|
if (td->tdesc0.TSR & TSR0_OWC)
|
|
stats->tx_window_errors++;
|
|
} else {
|
|
stats->tx_packets++;
|
|
stats->tx_bytes += tdinfo->skb->len;
|
|
}
|
|
velocity_free_tx_buf(vptr, tdinfo, td);
|
|
vptr->tx.used[qnum]--;
|
|
}
|
|
vptr->tx.tail[qnum] = idx;
|
|
|
|
if (AVAIL_TD(vptr, qnum) < 1)
|
|
full = 1;
|
|
}
|
|
/*
|
|
* Look to see if we should kick the transmit network
|
|
* layer for more work.
|
|
*/
|
|
if (netif_queue_stopped(vptr->dev) && (full == 0) &&
|
|
(!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
|
|
netif_wake_queue(vptr->dev);
|
|
}
|
|
return works;
|
|
}
|
|
|
|
/**
|
|
* velocity_rx_csum - checksum process
|
|
* @rd: receive packet descriptor
|
|
* @skb: network layer packet buffer
|
|
*
|
|
* Process the status bits for the received packet and determine
|
|
* if the checksum was computed and verified by the hardware
|
|
*/
|
|
static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
|
|
{
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
|
|
if (rd->rdesc1.CSM & CSM_IPKT) {
|
|
if (rd->rdesc1.CSM & CSM_IPOK) {
|
|
if ((rd->rdesc1.CSM & CSM_TCPKT) ||
|
|
(rd->rdesc1.CSM & CSM_UDPKT)) {
|
|
if (!(rd->rdesc1.CSM & CSM_TUPOK))
|
|
return;
|
|
}
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* velocity_rx_copy - in place Rx copy for small packets
|
|
* @rx_skb: network layer packet buffer candidate
|
|
* @pkt_size: received data size
|
|
* @rd: receive packet descriptor
|
|
* @dev: network device
|
|
*
|
|
* Replace the current skb that is scheduled for Rx processing by a
|
|
* shorter, immediatly allocated skb, if the received packet is small
|
|
* enough. This function returns a negative value if the received
|
|
* packet is too big or if memory is exhausted.
|
|
*/
|
|
static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
|
|
struct velocity_info *vptr)
|
|
{
|
|
int ret = -1;
|
|
if (pkt_size < rx_copybreak) {
|
|
struct sk_buff *new_skb;
|
|
|
|
new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
|
|
if (new_skb) {
|
|
new_skb->ip_summed = rx_skb[0]->ip_summed;
|
|
skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
|
|
*rx_skb = new_skb;
|
|
ret = 0;
|
|
}
|
|
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* velocity_iph_realign - IP header alignment
|
|
* @vptr: velocity we are handling
|
|
* @skb: network layer packet buffer
|
|
* @pkt_size: received data size
|
|
*
|
|
* Align IP header on a 2 bytes boundary. This behavior can be
|
|
* configured by the user.
|
|
*/
|
|
static inline void velocity_iph_realign(struct velocity_info *vptr,
|
|
struct sk_buff *skb, int pkt_size)
|
|
{
|
|
if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
|
|
memmove(skb->data + 2, skb->data, pkt_size);
|
|
skb_reserve(skb, 2);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* velocity_receive_frame - received packet processor
|
|
* @vptr: velocity we are handling
|
|
* @idx: ring index
|
|
*
|
|
* A packet has arrived. We process the packet and if appropriate
|
|
* pass the frame up the network stack
|
|
*/
|
|
static int velocity_receive_frame(struct velocity_info *vptr, int idx)
|
|
{
|
|
void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
|
|
struct net_device_stats *stats = &vptr->dev->stats;
|
|
struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
|
|
struct rx_desc *rd = &(vptr->rx.ring[idx]);
|
|
int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
|
|
struct sk_buff *skb;
|
|
|
|
if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
|
|
VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
|
|
stats->rx_length_errors++;
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (rd->rdesc0.RSR & RSR_MAR)
|
|
stats->multicast++;
|
|
|
|
skb = rd_info->skb;
|
|
|
|
pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
|
|
vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
|
|
|
|
/*
|
|
* Drop frame not meeting IEEE 802.3
|
|
*/
|
|
|
|
if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
|
|
if (rd->rdesc0.RSR & RSR_RL) {
|
|
stats->rx_length_errors++;
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
pci_action = pci_dma_sync_single_for_device;
|
|
|
|
velocity_rx_csum(rd, skb);
|
|
|
|
if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
|
|
velocity_iph_realign(vptr, skb, pkt_len);
|
|
pci_action = pci_unmap_single;
|
|
rd_info->skb = NULL;
|
|
}
|
|
|
|
pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
skb_put(skb, pkt_len - 4);
|
|
skb->protocol = eth_type_trans(skb, vptr->dev);
|
|
|
|
if (vptr->vlgrp && (rd->rdesc0.RSR & RSR_DETAG)) {
|
|
vlan_hwaccel_rx(skb, vptr->vlgrp,
|
|
swab16(le16_to_cpu(rd->rdesc1.PQTAG)));
|
|
} else
|
|
netif_rx(skb);
|
|
|
|
stats->rx_bytes += pkt_len;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* velocity_rx_srv - service RX interrupt
|
|
* @vptr: velocity
|
|
* @status: adapter status (unused)
|
|
*
|
|
* Walk the receive ring of the velocity adapter and remove
|
|
* any received packets from the receive queue. Hand the ring
|
|
* slots back to the adapter for reuse.
|
|
*/
|
|
static int velocity_rx_srv(struct velocity_info *vptr, int status,
|
|
int budget_left)
|
|
{
|
|
struct net_device_stats *stats = &vptr->dev->stats;
|
|
int rd_curr = vptr->rx.curr;
|
|
int works = 0;
|
|
|
|
while (works < budget_left) {
|
|
struct rx_desc *rd = vptr->rx.ring + rd_curr;
|
|
|
|
if (!vptr->rx.info[rd_curr].skb)
|
|
break;
|
|
|
|
if (rd->rdesc0.len & OWNED_BY_NIC)
|
|
break;
|
|
|
|
rmb();
|
|
|
|
/*
|
|
* Don't drop CE or RL error frame although RXOK is off
|
|
*/
|
|
if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
|
|
if (velocity_receive_frame(vptr, rd_curr) < 0)
|
|
stats->rx_dropped++;
|
|
} else {
|
|
if (rd->rdesc0.RSR & RSR_CRC)
|
|
stats->rx_crc_errors++;
|
|
if (rd->rdesc0.RSR & RSR_FAE)
|
|
stats->rx_frame_errors++;
|
|
|
|
stats->rx_dropped++;
|
|
}
|
|
|
|
rd->size |= RX_INTEN;
|
|
|
|
rd_curr++;
|
|
if (rd_curr >= vptr->options.numrx)
|
|
rd_curr = 0;
|
|
works++;
|
|
}
|
|
|
|
vptr->rx.curr = rd_curr;
|
|
|
|
if ((works > 0) && (velocity_rx_refill(vptr) > 0))
|
|
velocity_give_many_rx_descs(vptr);
|
|
|
|
VAR_USED(stats);
|
|
return works;
|
|
}
|
|
|
|
static int velocity_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct velocity_info *vptr = container_of(napi,
|
|
struct velocity_info, napi);
|
|
unsigned int rx_done;
|
|
u32 isr_status;
|
|
|
|
spin_lock(&vptr->lock);
|
|
isr_status = mac_read_isr(vptr->mac_regs);
|
|
|
|
/* Ack the interrupt */
|
|
mac_write_isr(vptr->mac_regs, isr_status);
|
|
if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
|
|
velocity_error(vptr, isr_status);
|
|
|
|
/*
|
|
* Do rx and tx twice for performance (taken from the VIA
|
|
* out-of-tree driver).
|
|
*/
|
|
rx_done = velocity_rx_srv(vptr, isr_status, budget / 2);
|
|
velocity_tx_srv(vptr, isr_status);
|
|
rx_done += velocity_rx_srv(vptr, isr_status, budget - rx_done);
|
|
velocity_tx_srv(vptr, isr_status);
|
|
|
|
spin_unlock(&vptr->lock);
|
|
|
|
/* If budget not fully consumed, exit the polling mode */
|
|
if (rx_done < budget) {
|
|
napi_complete(napi);
|
|
mac_enable_int(vptr->mac_regs);
|
|
}
|
|
|
|
return rx_done;
|
|
}
|
|
|
|
/**
|
|
* velocity_intr - interrupt callback
|
|
* @irq: interrupt number
|
|
* @dev_instance: interrupting device
|
|
*
|
|
* Called whenever an interrupt is generated by the velocity
|
|
* adapter IRQ line. We may not be the source of the interrupt
|
|
* and need to identify initially if we are, and if not exit as
|
|
* efficiently as possible.
|
|
*/
|
|
static irqreturn_t velocity_intr(int irq, void *dev_instance)
|
|
{
|
|
struct net_device *dev = dev_instance;
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
u32 isr_status;
|
|
|
|
spin_lock(&vptr->lock);
|
|
isr_status = mac_read_isr(vptr->mac_regs);
|
|
|
|
/* Not us ? */
|
|
if (isr_status == 0) {
|
|
spin_unlock(&vptr->lock);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
if (likely(napi_schedule_prep(&vptr->napi))) {
|
|
mac_disable_int(vptr->mac_regs);
|
|
__napi_schedule(&vptr->napi);
|
|
}
|
|
spin_unlock(&vptr->lock);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/**
|
|
* velocity_open - interface activation callback
|
|
* @dev: network layer device to open
|
|
*
|
|
* Called when the network layer brings the interface up. Returns
|
|
* a negative posix error code on failure, or zero on success.
|
|
*
|
|
* All the ring allocation and set up is done on open for this
|
|
* adapter to minimise memory usage when inactive
|
|
*/
|
|
static int velocity_open(struct net_device *dev)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
int ret;
|
|
|
|
ret = velocity_init_rings(vptr, dev->mtu);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
/* Ensure chip is running */
|
|
pci_set_power_state(vptr->pdev, PCI_D0);
|
|
|
|
velocity_init_registers(vptr, VELOCITY_INIT_COLD);
|
|
|
|
ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED,
|
|
dev->name, dev);
|
|
if (ret < 0) {
|
|
/* Power down the chip */
|
|
pci_set_power_state(vptr->pdev, PCI_D3hot);
|
|
velocity_free_rings(vptr);
|
|
goto out;
|
|
}
|
|
|
|
velocity_give_many_rx_descs(vptr);
|
|
|
|
mac_enable_int(vptr->mac_regs);
|
|
netif_start_queue(dev);
|
|
napi_enable(&vptr->napi);
|
|
vptr->flags |= VELOCITY_FLAGS_OPENED;
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* velocity_shutdown - shut down the chip
|
|
* @vptr: velocity to deactivate
|
|
*
|
|
* Shuts down the internal operations of the velocity and
|
|
* disables interrupts, autopolling, transmit and receive
|
|
*/
|
|
static void velocity_shutdown(struct velocity_info *vptr)
|
|
{
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
mac_disable_int(regs);
|
|
writel(CR0_STOP, ®s->CR0Set);
|
|
writew(0xFFFF, ®s->TDCSRClr);
|
|
writeb(0xFF, ®s->RDCSRClr);
|
|
safe_disable_mii_autopoll(regs);
|
|
mac_clear_isr(regs);
|
|
}
|
|
|
|
/**
|
|
* velocity_change_mtu - MTU change callback
|
|
* @dev: network device
|
|
* @new_mtu: desired MTU
|
|
*
|
|
* Handle requests from the networking layer for MTU change on
|
|
* this interface. It gets called on a change by the network layer.
|
|
* Return zero for success or negative posix error code.
|
|
*/
|
|
static int velocity_change_mtu(struct net_device *dev, int new_mtu)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
int ret = 0;
|
|
|
|
if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
|
|
VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
|
|
vptr->dev->name);
|
|
ret = -EINVAL;
|
|
goto out_0;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
dev->mtu = new_mtu;
|
|
goto out_0;
|
|
}
|
|
|
|
if (dev->mtu != new_mtu) {
|
|
struct velocity_info *tmp_vptr;
|
|
unsigned long flags;
|
|
struct rx_info rx;
|
|
struct tx_info tx;
|
|
|
|
tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
|
|
if (!tmp_vptr) {
|
|
ret = -ENOMEM;
|
|
goto out_0;
|
|
}
|
|
|
|
tmp_vptr->dev = dev;
|
|
tmp_vptr->pdev = vptr->pdev;
|
|
tmp_vptr->options = vptr->options;
|
|
tmp_vptr->tx.numq = vptr->tx.numq;
|
|
|
|
ret = velocity_init_rings(tmp_vptr, new_mtu);
|
|
if (ret < 0)
|
|
goto out_free_tmp_vptr_1;
|
|
|
|
spin_lock_irqsave(&vptr->lock, flags);
|
|
|
|
netif_stop_queue(dev);
|
|
velocity_shutdown(vptr);
|
|
|
|
rx = vptr->rx;
|
|
tx = vptr->tx;
|
|
|
|
vptr->rx = tmp_vptr->rx;
|
|
vptr->tx = tmp_vptr->tx;
|
|
|
|
tmp_vptr->rx = rx;
|
|
tmp_vptr->tx = tx;
|
|
|
|
dev->mtu = new_mtu;
|
|
|
|
velocity_init_registers(vptr, VELOCITY_INIT_COLD);
|
|
|
|
velocity_give_many_rx_descs(vptr);
|
|
|
|
mac_enable_int(vptr->mac_regs);
|
|
netif_start_queue(dev);
|
|
|
|
spin_unlock_irqrestore(&vptr->lock, flags);
|
|
|
|
velocity_free_rings(tmp_vptr);
|
|
|
|
out_free_tmp_vptr_1:
|
|
kfree(tmp_vptr);
|
|
}
|
|
out_0:
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* velocity_mii_ioctl - MII ioctl handler
|
|
* @dev: network device
|
|
* @ifr: the ifreq block for the ioctl
|
|
* @cmd: the command
|
|
*
|
|
* Process MII requests made via ioctl from the network layer. These
|
|
* are used by tools like kudzu to interrogate the link state of the
|
|
* hardware
|
|
*/
|
|
static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
unsigned long flags;
|
|
struct mii_ioctl_data *miidata = if_mii(ifr);
|
|
int err;
|
|
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY:
|
|
miidata->phy_id = readb(®s->MIIADR) & 0x1f;
|
|
break;
|
|
case SIOCGMIIREG:
|
|
if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
|
|
return -ETIMEDOUT;
|
|
break;
|
|
case SIOCSMIIREG:
|
|
spin_lock_irqsave(&vptr->lock, flags);
|
|
err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
|
|
spin_unlock_irqrestore(&vptr->lock, flags);
|
|
check_connection_type(vptr->mac_regs);
|
|
if (err)
|
|
return err;
|
|
break;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* velocity_ioctl - ioctl entry point
|
|
* @dev: network device
|
|
* @rq: interface request ioctl
|
|
* @cmd: command code
|
|
*
|
|
* Called when the user issues an ioctl request to the network
|
|
* device in question. The velocity interface supports MII.
|
|
*/
|
|
static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
int ret;
|
|
|
|
/* If we are asked for information and the device is power
|
|
saving then we need to bring the device back up to talk to it */
|
|
|
|
if (!netif_running(dev))
|
|
pci_set_power_state(vptr->pdev, PCI_D0);
|
|
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY: /* Get address of MII PHY in use. */
|
|
case SIOCGMIIREG: /* Read MII PHY register. */
|
|
case SIOCSMIIREG: /* Write to MII PHY register. */
|
|
ret = velocity_mii_ioctl(dev, rq, cmd);
|
|
break;
|
|
|
|
default:
|
|
ret = -EOPNOTSUPP;
|
|
}
|
|
if (!netif_running(dev))
|
|
pci_set_power_state(vptr->pdev, PCI_D3hot);
|
|
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* velocity_get_status - statistics callback
|
|
* @dev: network device
|
|
*
|
|
* Callback from the network layer to allow driver statistics
|
|
* to be resynchronized with hardware collected state. In the
|
|
* case of the velocity we need to pull the MIB counters from
|
|
* the hardware into the counters before letting the network
|
|
* layer display them.
|
|
*/
|
|
static struct net_device_stats *velocity_get_stats(struct net_device *dev)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
|
|
/* If the hardware is down, don't touch MII */
|
|
if (!netif_running(dev))
|
|
return &dev->stats;
|
|
|
|
spin_lock_irq(&vptr->lock);
|
|
velocity_update_hw_mibs(vptr);
|
|
spin_unlock_irq(&vptr->lock);
|
|
|
|
dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
|
|
dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
|
|
dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
|
|
|
|
// unsigned long rx_dropped; /* no space in linux buffers */
|
|
dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
|
|
/* detailed rx_errors: */
|
|
// unsigned long rx_length_errors;
|
|
// unsigned long rx_over_errors; /* receiver ring buff overflow */
|
|
dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
|
|
// unsigned long rx_frame_errors; /* recv'd frame alignment error */
|
|
// unsigned long rx_fifo_errors; /* recv'r fifo overrun */
|
|
// unsigned long rx_missed_errors; /* receiver missed packet */
|
|
|
|
/* detailed tx_errors */
|
|
// unsigned long tx_fifo_errors;
|
|
|
|
return &dev->stats;
|
|
}
|
|
|
|
/**
|
|
* velocity_close - close adapter callback
|
|
* @dev: network device
|
|
*
|
|
* Callback from the network layer when the velocity is being
|
|
* deactivated by the network layer
|
|
*/
|
|
static int velocity_close(struct net_device *dev)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
|
|
napi_disable(&vptr->napi);
|
|
netif_stop_queue(dev);
|
|
velocity_shutdown(vptr);
|
|
|
|
if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
|
|
velocity_get_ip(vptr);
|
|
if (dev->irq != 0)
|
|
free_irq(dev->irq, dev);
|
|
|
|
/* Power down the chip */
|
|
pci_set_power_state(vptr->pdev, PCI_D3hot);
|
|
|
|
velocity_free_rings(vptr);
|
|
|
|
vptr->flags &= (~VELOCITY_FLAGS_OPENED);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* velocity_xmit - transmit packet callback
|
|
* @skb: buffer to transmit
|
|
* @dev: network device
|
|
*
|
|
* Called by the networ layer to request a packet is queued to
|
|
* the velocity. Returns zero on success.
|
|
*/
|
|
static netdev_tx_t velocity_xmit(struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
int qnum = 0;
|
|
struct tx_desc *td_ptr;
|
|
struct velocity_td_info *tdinfo;
|
|
unsigned long flags;
|
|
int pktlen;
|
|
int index, prev;
|
|
int i = 0;
|
|
|
|
if (skb_padto(skb, ETH_ZLEN))
|
|
goto out;
|
|
|
|
/* The hardware can handle at most 7 memory segments, so merge
|
|
* the skb if there are more */
|
|
if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
|
|
kfree_skb(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
pktlen = skb_shinfo(skb)->nr_frags == 0 ?
|
|
max_t(unsigned int, skb->len, ETH_ZLEN) :
|
|
skb_headlen(skb);
|
|
|
|
spin_lock_irqsave(&vptr->lock, flags);
|
|
|
|
index = vptr->tx.curr[qnum];
|
|
td_ptr = &(vptr->tx.rings[qnum][index]);
|
|
tdinfo = &(vptr->tx.infos[qnum][index]);
|
|
|
|
td_ptr->tdesc1.TCR = TCR0_TIC;
|
|
td_ptr->td_buf[0].size &= ~TD_QUEUE;
|
|
|
|
/*
|
|
* Map the linear network buffer into PCI space and
|
|
* add it to the transmit ring.
|
|
*/
|
|
tdinfo->skb = skb;
|
|
tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
|
|
td_ptr->tdesc0.len = cpu_to_le16(pktlen);
|
|
td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
|
|
td_ptr->td_buf[0].pa_high = 0;
|
|
td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
|
|
|
|
/* Handle fragments */
|
|
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
|
|
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
|
|
|
|
tdinfo->skb_dma[i + 1] = pci_map_page(vptr->pdev, frag->page,
|
|
frag->page_offset, frag->size,
|
|
PCI_DMA_TODEVICE);
|
|
|
|
td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
|
|
td_ptr->td_buf[i + 1].pa_high = 0;
|
|
td_ptr->td_buf[i + 1].size = cpu_to_le16(frag->size);
|
|
}
|
|
tdinfo->nskb_dma = i + 1;
|
|
|
|
td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
|
|
|
|
if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
|
|
td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
|
|
td_ptr->tdesc1.TCR |= TCR0_VETAG;
|
|
}
|
|
|
|
/*
|
|
* Handle hardware checksum
|
|
*/
|
|
if ((dev->features & NETIF_F_IP_CSUM) &&
|
|
(skb->ip_summed == CHECKSUM_PARTIAL)) {
|
|
const struct iphdr *ip = ip_hdr(skb);
|
|
if (ip->protocol == IPPROTO_TCP)
|
|
td_ptr->tdesc1.TCR |= TCR0_TCPCK;
|
|
else if (ip->protocol == IPPROTO_UDP)
|
|
td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
|
|
td_ptr->tdesc1.TCR |= TCR0_IPCK;
|
|
}
|
|
|
|
prev = index - 1;
|
|
if (prev < 0)
|
|
prev = vptr->options.numtx - 1;
|
|
td_ptr->tdesc0.len |= OWNED_BY_NIC;
|
|
vptr->tx.used[qnum]++;
|
|
vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
|
|
|
|
if (AVAIL_TD(vptr, qnum) < 1)
|
|
netif_stop_queue(dev);
|
|
|
|
td_ptr = &(vptr->tx.rings[qnum][prev]);
|
|
td_ptr->td_buf[0].size |= TD_QUEUE;
|
|
mac_tx_queue_wake(vptr->mac_regs, qnum);
|
|
|
|
dev->trans_start = jiffies;
|
|
spin_unlock_irqrestore(&vptr->lock, flags);
|
|
out:
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
|
|
static const struct net_device_ops velocity_netdev_ops = {
|
|
.ndo_open = velocity_open,
|
|
.ndo_stop = velocity_close,
|
|
.ndo_start_xmit = velocity_xmit,
|
|
.ndo_get_stats = velocity_get_stats,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_mac_address = eth_mac_addr,
|
|
.ndo_set_multicast_list = velocity_set_multi,
|
|
.ndo_change_mtu = velocity_change_mtu,
|
|
.ndo_do_ioctl = velocity_ioctl,
|
|
.ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
|
|
.ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
|
|
.ndo_vlan_rx_register = velocity_vlan_rx_register,
|
|
};
|
|
|
|
/**
|
|
* velocity_init_info - init private data
|
|
* @pdev: PCI device
|
|
* @vptr: Velocity info
|
|
* @info: Board type
|
|
*
|
|
* Set up the initial velocity_info struct for the device that has been
|
|
* discovered.
|
|
*/
|
|
static void __devinit velocity_init_info(struct pci_dev *pdev,
|
|
struct velocity_info *vptr,
|
|
const struct velocity_info_tbl *info)
|
|
{
|
|
memset(vptr, 0, sizeof(struct velocity_info));
|
|
|
|
vptr->pdev = pdev;
|
|
vptr->chip_id = info->chip_id;
|
|
vptr->tx.numq = info->txqueue;
|
|
vptr->multicast_limit = MCAM_SIZE;
|
|
spin_lock_init(&vptr->lock);
|
|
}
|
|
|
|
/**
|
|
* velocity_get_pci_info - retrieve PCI info for device
|
|
* @vptr: velocity device
|
|
* @pdev: PCI device it matches
|
|
*
|
|
* Retrieve the PCI configuration space data that interests us from
|
|
* the kernel PCI layer
|
|
*/
|
|
static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
|
|
{
|
|
vptr->rev_id = pdev->revision;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
vptr->ioaddr = pci_resource_start(pdev, 0);
|
|
vptr->memaddr = pci_resource_start(pdev, 1);
|
|
|
|
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
|
|
dev_err(&pdev->dev,
|
|
"region #0 is not an I/O resource, aborting.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
|
|
dev_err(&pdev->dev,
|
|
"region #1 is an I/O resource, aborting.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
|
|
dev_err(&pdev->dev, "region #1 is too small.\n");
|
|
return -EINVAL;
|
|
}
|
|
vptr->pdev = pdev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* velocity_print_info - per driver data
|
|
* @vptr: velocity
|
|
*
|
|
* Print per driver data as the kernel driver finds Velocity
|
|
* hardware
|
|
*/
|
|
static void __devinit velocity_print_info(struct velocity_info *vptr)
|
|
{
|
|
struct net_device *dev = vptr->dev;
|
|
|
|
printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
|
|
printk(KERN_INFO "%s: Ethernet Address: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
|
|
dev->name,
|
|
dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
|
|
dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
|
|
}
|
|
|
|
static u32 velocity_get_link(struct net_device *dev)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* velocity_found1 - set up discovered velocity card
|
|
* @pdev: PCI device
|
|
* @ent: PCI device table entry that matched
|
|
*
|
|
* Configure a discovered adapter from scratch. Return a negative
|
|
* errno error code on failure paths.
|
|
*/
|
|
static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
static int first = 1;
|
|
struct net_device *dev;
|
|
int i;
|
|
const char *drv_string;
|
|
const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
|
|
struct velocity_info *vptr;
|
|
struct mac_regs __iomem *regs;
|
|
int ret = -ENOMEM;
|
|
|
|
/* FIXME: this driver, like almost all other ethernet drivers,
|
|
* can support more than MAX_UNITS.
|
|
*/
|
|
if (velocity_nics >= MAX_UNITS) {
|
|
dev_notice(&pdev->dev, "already found %d NICs.\n",
|
|
velocity_nics);
|
|
return -ENODEV;
|
|
}
|
|
|
|
dev = alloc_etherdev(sizeof(struct velocity_info));
|
|
if (!dev) {
|
|
dev_err(&pdev->dev, "allocate net device failed.\n");
|
|
goto out;
|
|
}
|
|
|
|
/* Chain it all together */
|
|
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
vptr = netdev_priv(dev);
|
|
|
|
|
|
if (first) {
|
|
printk(KERN_INFO "%s Ver. %s\n",
|
|
VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
|
|
printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
|
|
printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
|
|
first = 0;
|
|
}
|
|
|
|
velocity_init_info(pdev, vptr, info);
|
|
|
|
vptr->dev = dev;
|
|
|
|
dev->irq = pdev->irq;
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret < 0)
|
|
goto err_free_dev;
|
|
|
|
ret = velocity_get_pci_info(vptr, pdev);
|
|
if (ret < 0) {
|
|
/* error message already printed */
|
|
goto err_disable;
|
|
}
|
|
|
|
ret = pci_request_regions(pdev, VELOCITY_NAME);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "No PCI resources.\n");
|
|
goto err_disable;
|
|
}
|
|
|
|
regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
|
|
if (regs == NULL) {
|
|
ret = -EIO;
|
|
goto err_release_res;
|
|
}
|
|
|
|
vptr->mac_regs = regs;
|
|
|
|
mac_wol_reset(regs);
|
|
|
|
dev->base_addr = vptr->ioaddr;
|
|
|
|
for (i = 0; i < 6; i++)
|
|
dev->dev_addr[i] = readb(®s->PAR[i]);
|
|
|
|
|
|
drv_string = dev_driver_string(&pdev->dev);
|
|
|
|
velocity_get_options(&vptr->options, velocity_nics, drv_string);
|
|
|
|
/*
|
|
* Mask out the options cannot be set to the chip
|
|
*/
|
|
|
|
vptr->options.flags &= info->flags;
|
|
|
|
/*
|
|
* Enable the chip specified capbilities
|
|
*/
|
|
|
|
vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
|
|
|
|
vptr->wol_opts = vptr->options.wol_opts;
|
|
vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
|
|
|
|
vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
|
|
|
|
dev->irq = pdev->irq;
|
|
dev->netdev_ops = &velocity_netdev_ops;
|
|
dev->ethtool_ops = &velocity_ethtool_ops;
|
|
netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT);
|
|
|
|
dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
|
|
NETIF_F_HW_VLAN_RX | NETIF_F_IP_CSUM;
|
|
|
|
ret = register_netdev(dev);
|
|
if (ret < 0)
|
|
goto err_iounmap;
|
|
|
|
if (!velocity_get_link(dev)) {
|
|
netif_carrier_off(dev);
|
|
vptr->mii_status |= VELOCITY_LINK_FAIL;
|
|
}
|
|
|
|
velocity_print_info(vptr);
|
|
pci_set_drvdata(pdev, dev);
|
|
|
|
/* and leave the chip powered down */
|
|
|
|
pci_set_power_state(pdev, PCI_D3hot);
|
|
velocity_nics++;
|
|
out:
|
|
return ret;
|
|
|
|
err_iounmap:
|
|
iounmap(regs);
|
|
err_release_res:
|
|
pci_release_regions(pdev);
|
|
err_disable:
|
|
pci_disable_device(pdev);
|
|
err_free_dev:
|
|
free_netdev(dev);
|
|
goto out;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_PM
|
|
/**
|
|
* wol_calc_crc - WOL CRC
|
|
* @pattern: data pattern
|
|
* @mask_pattern: mask
|
|
*
|
|
* Compute the wake on lan crc hashes for the packet header
|
|
* we are interested in.
|
|
*/
|
|
static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
|
|
{
|
|
u16 crc = 0xFFFF;
|
|
u8 mask;
|
|
int i, j;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
mask = mask_pattern[i];
|
|
|
|
/* Skip this loop if the mask equals to zero */
|
|
if (mask == 0x00)
|
|
continue;
|
|
|
|
for (j = 0; j < 8; j++) {
|
|
if ((mask & 0x01) == 0) {
|
|
mask >>= 1;
|
|
continue;
|
|
}
|
|
mask >>= 1;
|
|
crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
|
|
}
|
|
}
|
|
/* Finally, invert the result once to get the correct data */
|
|
crc = ~crc;
|
|
return bitrev32(crc) >> 16;
|
|
}
|
|
|
|
/**
|
|
* velocity_set_wol - set up for wake on lan
|
|
* @vptr: velocity to set WOL status on
|
|
*
|
|
* Set a card up for wake on lan either by unicast or by
|
|
* ARP packet.
|
|
*
|
|
* FIXME: check static buffer is safe here
|
|
*/
|
|
static int velocity_set_wol(struct velocity_info *vptr)
|
|
{
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
static u8 buf[256];
|
|
int i;
|
|
|
|
static u32 mask_pattern[2][4] = {
|
|
{0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
|
|
{0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
|
|
};
|
|
|
|
writew(0xFFFF, ®s->WOLCRClr);
|
|
writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
|
|
writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
|
|
|
|
/*
|
|
if (vptr->wol_opts & VELOCITY_WOL_PHY)
|
|
writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
|
|
*/
|
|
|
|
if (vptr->wol_opts & VELOCITY_WOL_UCAST)
|
|
writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
|
|
|
|
if (vptr->wol_opts & VELOCITY_WOL_ARP) {
|
|
struct arp_packet *arp = (struct arp_packet *) buf;
|
|
u16 crc;
|
|
memset(buf, 0, sizeof(struct arp_packet) + 7);
|
|
|
|
for (i = 0; i < 4; i++)
|
|
writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
|
|
|
|
arp->type = htons(ETH_P_ARP);
|
|
arp->ar_op = htons(1);
|
|
|
|
memcpy(arp->ar_tip, vptr->ip_addr, 4);
|
|
|
|
crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
|
|
(u8 *) & mask_pattern[0][0]);
|
|
|
|
writew(crc, ®s->PatternCRC[0]);
|
|
writew(WOLCR_ARP_EN, ®s->WOLCRSet);
|
|
}
|
|
|
|
BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
|
|
BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
|
|
|
|
writew(0x0FFF, ®s->WOLSRClr);
|
|
|
|
if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
|
|
if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
|
|
MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
|
|
|
|
MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
|
|
}
|
|
|
|
if (vptr->mii_status & VELOCITY_SPEED_1000)
|
|
MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
|
|
|
|
BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
|
|
|
|
{
|
|
u8 GCR;
|
|
GCR = readb(®s->CHIPGCR);
|
|
GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
|
|
writeb(GCR, ®s->CHIPGCR);
|
|
}
|
|
|
|
BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
|
|
/* Turn on SWPTAG just before entering power mode */
|
|
BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
|
|
/* Go to bed ..... */
|
|
BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* velocity_save_context - save registers
|
|
* @vptr: velocity
|
|
* @context: buffer for stored context
|
|
*
|
|
* Retrieve the current configuration from the velocity hardware
|
|
* and stash it in the context structure, for use by the context
|
|
* restore functions. This allows us to save things we need across
|
|
* power down states
|
|
*/
|
|
static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
|
|
{
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
u16 i;
|
|
u8 __iomem *ptr = (u8 __iomem *)regs;
|
|
|
|
for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
|
|
*((u32 *) (context->mac_reg + i)) = readl(ptr + i);
|
|
|
|
for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
|
|
*((u32 *) (context->mac_reg + i)) = readl(ptr + i);
|
|
|
|
for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
|
|
*((u32 *) (context->mac_reg + i)) = readl(ptr + i);
|
|
|
|
}
|
|
|
|
static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
struct net_device *dev = pci_get_drvdata(pdev);
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
unsigned long flags;
|
|
|
|
if (!netif_running(vptr->dev))
|
|
return 0;
|
|
|
|
netif_device_detach(vptr->dev);
|
|
|
|
spin_lock_irqsave(&vptr->lock, flags);
|
|
pci_save_state(pdev);
|
|
#ifdef ETHTOOL_GWOL
|
|
if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
|
|
velocity_get_ip(vptr);
|
|
velocity_save_context(vptr, &vptr->context);
|
|
velocity_shutdown(vptr);
|
|
velocity_set_wol(vptr);
|
|
pci_enable_wake(pdev, PCI_D3hot, 1);
|
|
pci_set_power_state(pdev, PCI_D3hot);
|
|
} else {
|
|
velocity_save_context(vptr, &vptr->context);
|
|
velocity_shutdown(vptr);
|
|
pci_disable_device(pdev);
|
|
pci_set_power_state(pdev, pci_choose_state(pdev, state));
|
|
}
|
|
#else
|
|
pci_set_power_state(pdev, pci_choose_state(pdev, state));
|
|
#endif
|
|
spin_unlock_irqrestore(&vptr->lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* velocity_restore_context - restore registers
|
|
* @vptr: velocity
|
|
* @context: buffer for stored context
|
|
*
|
|
* Reload the register configuration from the velocity context
|
|
* created by velocity_save_context.
|
|
*/
|
|
static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
|
|
{
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
int i;
|
|
u8 __iomem *ptr = (u8 __iomem *)regs;
|
|
|
|
for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
|
|
writel(*((u32 *) (context->mac_reg + i)), ptr + i);
|
|
|
|
/* Just skip cr0 */
|
|
for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
|
|
/* Clear */
|
|
writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
|
|
/* Set */
|
|
writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
|
|
}
|
|
|
|
for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
|
|
writel(*((u32 *) (context->mac_reg + i)), ptr + i);
|
|
|
|
for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
|
|
writel(*((u32 *) (context->mac_reg + i)), ptr + i);
|
|
|
|
for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
|
|
writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
|
|
}
|
|
|
|
static int velocity_resume(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *dev = pci_get_drvdata(pdev);
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
if (!netif_running(vptr->dev))
|
|
return 0;
|
|
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
pci_enable_wake(pdev, 0, 0);
|
|
pci_restore_state(pdev);
|
|
|
|
mac_wol_reset(vptr->mac_regs);
|
|
|
|
spin_lock_irqsave(&vptr->lock, flags);
|
|
velocity_restore_context(vptr, &vptr->context);
|
|
velocity_init_registers(vptr, VELOCITY_INIT_WOL);
|
|
mac_disable_int(vptr->mac_regs);
|
|
|
|
velocity_tx_srv(vptr, 0);
|
|
|
|
for (i = 0; i < vptr->tx.numq; i++) {
|
|
if (vptr->tx.used[i])
|
|
mac_tx_queue_wake(vptr->mac_regs, i);
|
|
}
|
|
|
|
mac_enable_int(vptr->mac_regs);
|
|
spin_unlock_irqrestore(&vptr->lock, flags);
|
|
netif_device_attach(vptr->dev);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Definition for our device driver. The PCI layer interface
|
|
* uses this to handle all our card discover and plugging
|
|
*/
|
|
static struct pci_driver velocity_driver = {
|
|
.name = VELOCITY_NAME,
|
|
.id_table = velocity_id_table,
|
|
.probe = velocity_found1,
|
|
.remove = __devexit_p(velocity_remove1),
|
|
#ifdef CONFIG_PM
|
|
.suspend = velocity_suspend,
|
|
.resume = velocity_resume,
|
|
#endif
|
|
};
|
|
|
|
|
|
/**
|
|
* velocity_ethtool_up - pre hook for ethtool
|
|
* @dev: network device
|
|
*
|
|
* Called before an ethtool operation. We need to make sure the
|
|
* chip is out of D3 state before we poke at it.
|
|
*/
|
|
static int velocity_ethtool_up(struct net_device *dev)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
if (!netif_running(dev))
|
|
pci_set_power_state(vptr->pdev, PCI_D0);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* velocity_ethtool_down - post hook for ethtool
|
|
* @dev: network device
|
|
*
|
|
* Called after an ethtool operation. Restore the chip back to D3
|
|
* state if it isn't running.
|
|
*/
|
|
static void velocity_ethtool_down(struct net_device *dev)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
if (!netif_running(dev))
|
|
pci_set_power_state(vptr->pdev, PCI_D3hot);
|
|
}
|
|
|
|
static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
struct mac_regs __iomem *regs = vptr->mac_regs;
|
|
u32 status;
|
|
status = check_connection_type(vptr->mac_regs);
|
|
|
|
cmd->supported = SUPPORTED_TP |
|
|
SUPPORTED_Autoneg |
|
|
SUPPORTED_10baseT_Half |
|
|
SUPPORTED_10baseT_Full |
|
|
SUPPORTED_100baseT_Half |
|
|
SUPPORTED_100baseT_Full |
|
|
SUPPORTED_1000baseT_Half |
|
|
SUPPORTED_1000baseT_Full;
|
|
if (status & VELOCITY_SPEED_1000)
|
|
cmd->speed = SPEED_1000;
|
|
else if (status & VELOCITY_SPEED_100)
|
|
cmd->speed = SPEED_100;
|
|
else
|
|
cmd->speed = SPEED_10;
|
|
cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
|
|
cmd->port = PORT_TP;
|
|
cmd->transceiver = XCVR_INTERNAL;
|
|
cmd->phy_address = readb(®s->MIIADR) & 0x1F;
|
|
|
|
if (status & VELOCITY_DUPLEX_FULL)
|
|
cmd->duplex = DUPLEX_FULL;
|
|
else
|
|
cmd->duplex = DUPLEX_HALF;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
u32 curr_status;
|
|
u32 new_status = 0;
|
|
int ret = 0;
|
|
|
|
curr_status = check_connection_type(vptr->mac_regs);
|
|
curr_status &= (~VELOCITY_LINK_FAIL);
|
|
|
|
new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
|
|
new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
|
|
new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
|
|
new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
|
|
|
|
if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
|
|
ret = -EINVAL;
|
|
else
|
|
velocity_set_media_mode(vptr, new_status);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
strcpy(info->driver, VELOCITY_NAME);
|
|
strcpy(info->version, VELOCITY_VERSION);
|
|
strcpy(info->bus_info, pci_name(vptr->pdev));
|
|
}
|
|
|
|
static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
|
|
wol->wolopts |= WAKE_MAGIC;
|
|
/*
|
|
if (vptr->wol_opts & VELOCITY_WOL_PHY)
|
|
wol.wolopts|=WAKE_PHY;
|
|
*/
|
|
if (vptr->wol_opts & VELOCITY_WOL_UCAST)
|
|
wol->wolopts |= WAKE_UCAST;
|
|
if (vptr->wol_opts & VELOCITY_WOL_ARP)
|
|
wol->wolopts |= WAKE_ARP;
|
|
memcpy(&wol->sopass, vptr->wol_passwd, 6);
|
|
}
|
|
|
|
static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
|
|
if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
|
|
return -EFAULT;
|
|
vptr->wol_opts = VELOCITY_WOL_MAGIC;
|
|
|
|
/*
|
|
if (wol.wolopts & WAKE_PHY) {
|
|
vptr->wol_opts|=VELOCITY_WOL_PHY;
|
|
vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
|
|
}
|
|
*/
|
|
|
|
if (wol->wolopts & WAKE_MAGIC) {
|
|
vptr->wol_opts |= VELOCITY_WOL_MAGIC;
|
|
vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
|
|
}
|
|
if (wol->wolopts & WAKE_UCAST) {
|
|
vptr->wol_opts |= VELOCITY_WOL_UCAST;
|
|
vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
|
|
}
|
|
if (wol->wolopts & WAKE_ARP) {
|
|
vptr->wol_opts |= VELOCITY_WOL_ARP;
|
|
vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
|
|
}
|
|
memcpy(vptr->wol_passwd, wol->sopass, 6);
|
|
return 0;
|
|
}
|
|
|
|
static u32 velocity_get_msglevel(struct net_device *dev)
|
|
{
|
|
return msglevel;
|
|
}
|
|
|
|
static void velocity_set_msglevel(struct net_device *dev, u32 value)
|
|
{
|
|
msglevel = value;
|
|
}
|
|
|
|
static int get_pending_timer_val(int val)
|
|
{
|
|
int mult_bits = val >> 6;
|
|
int mult = 1;
|
|
|
|
switch (mult_bits)
|
|
{
|
|
case 1:
|
|
mult = 4; break;
|
|
case 2:
|
|
mult = 16; break;
|
|
case 3:
|
|
mult = 64; break;
|
|
case 0:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return (val & 0x3f) * mult;
|
|
}
|
|
|
|
static void set_pending_timer_val(int *val, u32 us)
|
|
{
|
|
u8 mult = 0;
|
|
u8 shift = 0;
|
|
|
|
if (us >= 0x3f) {
|
|
mult = 1; /* mult with 4 */
|
|
shift = 2;
|
|
}
|
|
if (us >= 0x3f * 4) {
|
|
mult = 2; /* mult with 16 */
|
|
shift = 4;
|
|
}
|
|
if (us >= 0x3f * 16) {
|
|
mult = 3; /* mult with 64 */
|
|
shift = 6;
|
|
}
|
|
|
|
*val = (mult << 6) | ((us >> shift) & 0x3f);
|
|
}
|
|
|
|
|
|
static int velocity_get_coalesce(struct net_device *dev,
|
|
struct ethtool_coalesce *ecmd)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
|
|
ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
|
|
ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
|
|
|
|
ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
|
|
ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int velocity_set_coalesce(struct net_device *dev,
|
|
struct ethtool_coalesce *ecmd)
|
|
{
|
|
struct velocity_info *vptr = netdev_priv(dev);
|
|
int max_us = 0x3f * 64;
|
|
|
|
/* 6 bits of */
|
|
if (ecmd->tx_coalesce_usecs > max_us)
|
|
return -EINVAL;
|
|
if (ecmd->rx_coalesce_usecs > max_us)
|
|
return -EINVAL;
|
|
|
|
if (ecmd->tx_max_coalesced_frames > 0xff)
|
|
return -EINVAL;
|
|
if (ecmd->rx_max_coalesced_frames > 0xff)
|
|
return -EINVAL;
|
|
|
|
vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
|
|
vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
|
|
|
|
set_pending_timer_val(&vptr->options.rxqueue_timer,
|
|
ecmd->rx_coalesce_usecs);
|
|
set_pending_timer_val(&vptr->options.txqueue_timer,
|
|
ecmd->tx_coalesce_usecs);
|
|
|
|
/* Setup the interrupt suppression and queue timers */
|
|
mac_disable_int(vptr->mac_regs);
|
|
setup_adaptive_interrupts(vptr);
|
|
setup_queue_timers(vptr);
|
|
|
|
mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
|
|
mac_clear_isr(vptr->mac_regs);
|
|
mac_enable_int(vptr->mac_regs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct ethtool_ops velocity_ethtool_ops = {
|
|
.get_settings = velocity_get_settings,
|
|
.set_settings = velocity_set_settings,
|
|
.get_drvinfo = velocity_get_drvinfo,
|
|
.set_tx_csum = ethtool_op_set_tx_csum,
|
|
.get_tx_csum = ethtool_op_get_tx_csum,
|
|
.get_wol = velocity_ethtool_get_wol,
|
|
.set_wol = velocity_ethtool_set_wol,
|
|
.get_msglevel = velocity_get_msglevel,
|
|
.set_msglevel = velocity_set_msglevel,
|
|
.set_sg = ethtool_op_set_sg,
|
|
.get_link = velocity_get_link,
|
|
.get_coalesce = velocity_get_coalesce,
|
|
.set_coalesce = velocity_set_coalesce,
|
|
.begin = velocity_ethtool_up,
|
|
.complete = velocity_ethtool_down
|
|
};
|
|
|
|
#ifdef CONFIG_PM
|
|
#ifdef CONFIG_INET
|
|
static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
|
|
{
|
|
struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
|
|
struct net_device *dev = ifa->ifa_dev->dev;
|
|
|
|
if (dev_net(dev) == &init_net &&
|
|
dev->netdev_ops == &velocity_netdev_ops)
|
|
velocity_get_ip(netdev_priv(dev));
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
#endif /* CONFIG_INET */
|
|
#endif /* CONFIG_PM */
|
|
|
|
#if defined(CONFIG_PM) && defined(CONFIG_INET)
|
|
static struct notifier_block velocity_inetaddr_notifier = {
|
|
.notifier_call = velocity_netdev_event,
|
|
};
|
|
|
|
static void velocity_register_notifier(void)
|
|
{
|
|
register_inetaddr_notifier(&velocity_inetaddr_notifier);
|
|
}
|
|
|
|
static void velocity_unregister_notifier(void)
|
|
{
|
|
unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
|
|
}
|
|
|
|
#else
|
|
|
|
#define velocity_register_notifier() do {} while (0)
|
|
#define velocity_unregister_notifier() do {} while (0)
|
|
|
|
#endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
|
|
|
|
/**
|
|
* velocity_init_module - load time function
|
|
*
|
|
* Called when the velocity module is loaded. The PCI driver
|
|
* is registered with the PCI layer, and in turn will call
|
|
* the probe functions for each velocity adapter installed
|
|
* in the system.
|
|
*/
|
|
static int __init velocity_init_module(void)
|
|
{
|
|
int ret;
|
|
|
|
velocity_register_notifier();
|
|
ret = pci_register_driver(&velocity_driver);
|
|
if (ret < 0)
|
|
velocity_unregister_notifier();
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* velocity_cleanup - module unload
|
|
*
|
|
* When the velocity hardware is unloaded this function is called.
|
|
* It will clean up the notifiers and the unregister the PCI
|
|
* driver interface for this hardware. This in turn cleans up
|
|
* all discovered interfaces before returning from the function
|
|
*/
|
|
static void __exit velocity_cleanup_module(void)
|
|
{
|
|
velocity_unregister_notifier();
|
|
pci_unregister_driver(&velocity_driver);
|
|
}
|
|
|
|
module_init(velocity_init_module);
|
|
module_exit(velocity_cleanup_module);
|