/* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
|
Copyright 1999 Silicon Integrated System Corporation
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Revision: 1.08.10 Apr. 2 2006
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Modified from the driver which is originally written by Donald Becker.
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This software may be used and distributed according to the terms
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of the GNU General Public License (GPL), incorporated herein by reference.
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Drivers based on this skeleton fall under the GPL and must retain
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the authorship (implicit copyright) notice.
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References:
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SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
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preliminary Rev. 1.0 Jan. 14, 1998
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SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
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preliminary Rev. 1.0 Nov. 10, 1998
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SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
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preliminary Rev. 1.0 Jan. 18, 1998
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|
Rev 1.08.10 Apr. 2 2006 Daniele Venzano add vlan (jumbo packets) support
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Rev 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support
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Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
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Rev 1.08.07 Nov. 2 2003 Daniele Venzano <venza@brownhat.org> add suspend/resume support
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Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support
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Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary
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Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support
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Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function
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Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem
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Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
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Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix
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Rev 1.07.11 Apr. 2 2001 Hui-Fen Hsu updates PCI drivers to use the new pci_set_dma_mask for kernel 2.4.3
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Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
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Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup
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Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
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Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix
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Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning
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Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig
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Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
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Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E equalizer workaround rule
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Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1
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Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring
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Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4
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Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release
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Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed
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Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com)
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Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release
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Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx
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Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support
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Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include <linux/init.h>
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#include <linux/mii.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/ethtool.h>
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#include <linux/crc32.h>
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#include <linux/bitops.h>
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#include <linux/dma-mapping.h>
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#include <asm/processor.h> /* Processor type for cache alignment. */
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <linux/uaccess.h> /* User space memory access functions */
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#include "sis900.h"
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#define SIS900_MODULE_NAME "sis900"
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#define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006"
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static const char version[] =
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KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
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static int max_interrupt_work = 40;
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static int multicast_filter_limit = 128;
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static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
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|
#define SIS900_DEF_MSG \
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(NETIF_MSG_DRV | \
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NETIF_MSG_LINK | \
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NETIF_MSG_RX_ERR | \
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NETIF_MSG_TX_ERR)
|
|
/* Time in jiffies before concluding the transmitter is hung. */
|
#define TX_TIMEOUT (4*HZ)
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enum {
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SIS_900 = 0,
|
SIS_7016
|
};
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static const char * card_names[] = {
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"SiS 900 PCI Fast Ethernet",
|
"SiS 7016 PCI Fast Ethernet"
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};
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|
static const struct pci_device_id sis900_pci_tbl[] = {
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{PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
|
{PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
|
{0,}
|
};
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MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
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static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
|
|
static const struct mii_chip_info {
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const char * name;
|
u16 phy_id0;
|
u16 phy_id1;
|
u8 phy_types;
|
#define HOME 0x0001
|
#define LAN 0x0002
|
#define MIX 0x0003
|
#define UNKNOWN 0x0
|
} mii_chip_table[] = {
|
{ "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
|
{ "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
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{ "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
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{ "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
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{ "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
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{ "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
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{ "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
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{ "ICS LAN PHY", 0x0015, 0xF440, LAN },
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{ "ICS LAN PHY", 0x0143, 0xBC70, LAN },
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{ "NS 83851 PHY", 0x2000, 0x5C20, MIX },
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{ "NS 83847 PHY", 0x2000, 0x5C30, MIX },
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{ "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
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{ "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
|
{NULL,},
|
};
|
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struct mii_phy {
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struct mii_phy * next;
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int phy_addr;
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u16 phy_id0;
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u16 phy_id1;
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u16 status;
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u8 phy_types;
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};
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|
typedef struct _BufferDesc {
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u32 link;
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u32 cmdsts;
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u32 bufptr;
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} BufferDesc;
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struct sis900_private {
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struct pci_dev * pci_dev;
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spinlock_t lock;
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struct mii_phy * mii;
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struct mii_phy * first_mii; /* record the first mii structure */
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unsigned int cur_phy;
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struct mii_if_info mii_info;
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void __iomem *ioaddr;
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struct timer_list timer; /* Link status detection timer. */
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u8 autong_complete; /* 1: auto-negotiate complete */
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u32 msg_enable;
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unsigned int cur_rx, dirty_rx; /* producer/consumer pointers for Tx/Rx ring */
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unsigned int cur_tx, dirty_tx;
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/* The saved address of a sent/receive-in-place packet buffer */
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struct sk_buff *tx_skbuff[NUM_TX_DESC];
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struct sk_buff *rx_skbuff[NUM_RX_DESC];
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BufferDesc *tx_ring;
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BufferDesc *rx_ring;
|
|
dma_addr_t tx_ring_dma;
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dma_addr_t rx_ring_dma;
|
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unsigned int tx_full; /* The Tx queue is full. */
|
u8 host_bridge_rev;
|
u8 chipset_rev;
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/* EEPROM data */
|
int eeprom_size;
|
};
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|
MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
|
MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
|
MODULE_LICENSE("GPL");
|
|
module_param(multicast_filter_limit, int, 0444);
|
module_param(max_interrupt_work, int, 0444);
|
module_param(sis900_debug, int, 0444);
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MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
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MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
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MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
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|
#define sw32(reg, val) iowrite32(val, ioaddr + (reg))
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#define sw8(reg, val) iowrite8(val, ioaddr + (reg))
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#define sr32(reg) ioread32(ioaddr + (reg))
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#define sr16(reg) ioread16(ioaddr + (reg))
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
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static void sis900_poll(struct net_device *dev);
|
#endif
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static int sis900_open(struct net_device *net_dev);
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static int sis900_mii_probe (struct net_device * net_dev);
|
static void sis900_init_rxfilter (struct net_device * net_dev);
|
static u16 read_eeprom(void __iomem *ioaddr, int location);
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static int mdio_read(struct net_device *net_dev, int phy_id, int location);
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static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
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static void sis900_timer(struct timer_list *t);
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static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
|
static void sis900_tx_timeout(struct net_device *net_dev, unsigned int txqueue);
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static void sis900_init_tx_ring(struct net_device *net_dev);
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static void sis900_init_rx_ring(struct net_device *net_dev);
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static netdev_tx_t sis900_start_xmit(struct sk_buff *skb,
|
struct net_device *net_dev);
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static int sis900_rx(struct net_device *net_dev);
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static void sis900_finish_xmit (struct net_device *net_dev);
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static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
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static int sis900_close(struct net_device *net_dev);
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static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
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static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
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static void set_rx_mode(struct net_device *net_dev);
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static void sis900_reset(struct net_device *net_dev);
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static void sis630_set_eq(struct net_device *net_dev, u8 revision);
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static int sis900_set_config(struct net_device *dev, struct ifmap *map);
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static u16 sis900_default_phy(struct net_device * net_dev);
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static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
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static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
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static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
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static void sis900_set_mode(struct sis900_private *, int speed, int duplex);
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static const struct ethtool_ops sis900_ethtool_ops;
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|
/**
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* sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
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* @pci_dev: the sis900 pci device
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* @net_dev: the net device to get address for
|
*
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* Older SiS900 and friends, use EEPROM to store MAC address.
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* MAC address is read from read_eeprom() into @net_dev->dev_addr.
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*/
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static int sis900_get_mac_addr(struct pci_dev *pci_dev,
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struct net_device *net_dev)
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{
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struct sis900_private *sis_priv = netdev_priv(net_dev);
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void __iomem *ioaddr = sis_priv->ioaddr;
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u16 signature;
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int i;
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/* check to see if we have sane EEPROM */
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signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
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if (signature == 0xffff || signature == 0x0000) {
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printk (KERN_WARNING "%s: Error EEPROM read %x\n",
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pci_name(pci_dev), signature);
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return 0;
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}
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/* get MAC address from EEPROM */
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for (i = 0; i < 3; i++)
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((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
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|
return 1;
|
}
|
|
/**
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* sis630e_get_mac_addr - Get MAC address for SiS630E model
|
* @pci_dev: the sis900 pci device
|
* @net_dev: the net device to get address for
|
*
|
* SiS630E model, use APC CMOS RAM to store MAC address.
|
* APC CMOS RAM is accessed through ISA bridge.
|
* MAC address is read into @net_dev->dev_addr.
|
*/
|
|
static int sis630e_get_mac_addr(struct pci_dev *pci_dev,
|
struct net_device *net_dev)
|
{
|
struct pci_dev *isa_bridge = NULL;
|
u8 reg;
|
int i;
|
|
isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
|
if (!isa_bridge)
|
isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
|
if (!isa_bridge) {
|
printk(KERN_WARNING "%s: Can not find ISA bridge\n",
|
pci_name(pci_dev));
|
return 0;
|
}
|
pci_read_config_byte(isa_bridge, 0x48, ®);
|
pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
|
|
for (i = 0; i < 6; i++) {
|
outb(0x09 + i, 0x70);
|
((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
|
}
|
|
pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
|
pci_dev_put(isa_bridge);
|
|
return 1;
|
}
|
|
|
/**
|
* sis635_get_mac_addr - Get MAC address for SIS635 model
|
* @pci_dev: the sis900 pci device
|
* @net_dev: the net device to get address for
|
*
|
* SiS635 model, set MAC Reload Bit to load Mac address from APC
|
* to rfdr. rfdr is accessed through rfcr. MAC address is read into
|
* @net_dev->dev_addr.
|
*/
|
|
static int sis635_get_mac_addr(struct pci_dev *pci_dev,
|
struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
u32 rfcrSave;
|
u32 i;
|
|
rfcrSave = sr32(rfcr);
|
|
sw32(cr, rfcrSave | RELOAD);
|
sw32(cr, 0);
|
|
/* disable packet filtering before setting filter */
|
sw32(rfcr, rfcrSave & ~RFEN);
|
|
/* load MAC addr to filter data register */
|
for (i = 0 ; i < 3 ; i++) {
|
sw32(rfcr, (i << RFADDR_shift));
|
*( ((u16 *)net_dev->dev_addr) + i) = sr16(rfdr);
|
}
|
|
/* enable packet filtering */
|
sw32(rfcr, rfcrSave | RFEN);
|
|
return 1;
|
}
|
|
/**
|
* sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
|
* @pci_dev: the sis900 pci device
|
* @net_dev: the net device to get address for
|
*
|
* SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
|
* is shared by
|
* LAN and 1394. When accessing EEPROM, send EEREQ signal to hardware first
|
* and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be accessed
|
* by LAN, otherwise it is not. After MAC address is read from EEPROM, send
|
* EEDONE signal to refuse EEPROM access by LAN.
|
* The EEPROM map of SiS962 or SiS963 is different to SiS900.
|
* The signature field in SiS962 or SiS963 spec is meaningless.
|
* MAC address is read into @net_dev->dev_addr.
|
*/
|
|
static int sis96x_get_mac_addr(struct pci_dev *pci_dev,
|
struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
int wait, rc = 0;
|
|
sw32(mear, EEREQ);
|
for (wait = 0; wait < 2000; wait++) {
|
if (sr32(mear) & EEGNT) {
|
u16 *mac = (u16 *)net_dev->dev_addr;
|
int i;
|
|
/* get MAC address from EEPROM */
|
for (i = 0; i < 3; i++)
|
mac[i] = read_eeprom(ioaddr, i + EEPROMMACAddr);
|
|
rc = 1;
|
break;
|
}
|
udelay(1);
|
}
|
sw32(mear, EEDONE);
|
return rc;
|
}
|
|
static const struct net_device_ops sis900_netdev_ops = {
|
.ndo_open = sis900_open,
|
.ndo_stop = sis900_close,
|
.ndo_start_xmit = sis900_start_xmit,
|
.ndo_set_config = sis900_set_config,
|
.ndo_set_rx_mode = set_rx_mode,
|
.ndo_validate_addr = eth_validate_addr,
|
.ndo_set_mac_address = eth_mac_addr,
|
.ndo_do_ioctl = mii_ioctl,
|
.ndo_tx_timeout = sis900_tx_timeout,
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
.ndo_poll_controller = sis900_poll,
|
#endif
|
};
|
|
/**
|
* sis900_probe - Probe for sis900 device
|
* @pci_dev: the sis900 pci device
|
* @pci_id: the pci device ID
|
*
|
* Check and probe sis900 net device for @pci_dev.
|
* Get mac address according to the chip revision,
|
* and assign SiS900-specific entries in the device structure.
|
* ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
|
*/
|
|
static int sis900_probe(struct pci_dev *pci_dev,
|
const struct pci_device_id *pci_id)
|
{
|
struct sis900_private *sis_priv;
|
struct net_device *net_dev;
|
struct pci_dev *dev;
|
dma_addr_t ring_dma;
|
void *ring_space;
|
void __iomem *ioaddr;
|
int i, ret;
|
const char *card_name = card_names[pci_id->driver_data];
|
const char *dev_name = pci_name(pci_dev);
|
|
/* when built into the kernel, we only print version if device is found */
|
#ifndef MODULE
|
static int printed_version;
|
if (!printed_version++)
|
printk(version);
|
#endif
|
|
/* setup various bits in PCI command register */
|
ret = pcim_enable_device(pci_dev);
|
if(ret) return ret;
|
|
i = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32));
|
if(i){
|
printk(KERN_ERR "sis900.c: architecture does not support "
|
"32bit PCI busmaster DMA\n");
|
return i;
|
}
|
|
pci_set_master(pci_dev);
|
|
net_dev = alloc_etherdev(sizeof(struct sis900_private));
|
if (!net_dev)
|
return -ENOMEM;
|
SET_NETDEV_DEV(net_dev, &pci_dev->dev);
|
|
/* We do a request_region() to register /proc/ioports info. */
|
ret = pci_request_regions(pci_dev, "sis900");
|
if (ret)
|
goto err_out;
|
|
/* IO region. */
|
ioaddr = pci_iomap(pci_dev, 0, 0);
|
if (!ioaddr) {
|
ret = -ENOMEM;
|
goto err_out;
|
}
|
|
sis_priv = netdev_priv(net_dev);
|
sis_priv->ioaddr = ioaddr;
|
sis_priv->pci_dev = pci_dev;
|
spin_lock_init(&sis_priv->lock);
|
|
sis_priv->eeprom_size = 24;
|
|
pci_set_drvdata(pci_dev, net_dev);
|
|
ring_space = dma_alloc_coherent(&pci_dev->dev, TX_TOTAL_SIZE,
|
&ring_dma, GFP_KERNEL);
|
if (!ring_space) {
|
ret = -ENOMEM;
|
goto err_out_unmap;
|
}
|
sis_priv->tx_ring = ring_space;
|
sis_priv->tx_ring_dma = ring_dma;
|
|
ring_space = dma_alloc_coherent(&pci_dev->dev, RX_TOTAL_SIZE,
|
&ring_dma, GFP_KERNEL);
|
if (!ring_space) {
|
ret = -ENOMEM;
|
goto err_unmap_tx;
|
}
|
sis_priv->rx_ring = ring_space;
|
sis_priv->rx_ring_dma = ring_dma;
|
|
/* The SiS900-specific entries in the device structure. */
|
net_dev->netdev_ops = &sis900_netdev_ops;
|
net_dev->watchdog_timeo = TX_TIMEOUT;
|
net_dev->ethtool_ops = &sis900_ethtool_ops;
|
|
if (sis900_debug > 0)
|
sis_priv->msg_enable = sis900_debug;
|
else
|
sis_priv->msg_enable = SIS900_DEF_MSG;
|
|
sis_priv->mii_info.dev = net_dev;
|
sis_priv->mii_info.mdio_read = mdio_read;
|
sis_priv->mii_info.mdio_write = mdio_write;
|
sis_priv->mii_info.phy_id_mask = 0x1f;
|
sis_priv->mii_info.reg_num_mask = 0x1f;
|
|
/* Get Mac address according to the chip revision */
|
sis_priv->chipset_rev = pci_dev->revision;
|
if(netif_msg_probe(sis_priv))
|
printk(KERN_DEBUG "%s: detected revision %2.2x, "
|
"trying to get MAC address...\n",
|
dev_name, sis_priv->chipset_rev);
|
|
ret = 0;
|
if (sis_priv->chipset_rev == SIS630E_900_REV)
|
ret = sis630e_get_mac_addr(pci_dev, net_dev);
|
else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
|
ret = sis635_get_mac_addr(pci_dev, net_dev);
|
else if (sis_priv->chipset_rev == SIS96x_900_REV)
|
ret = sis96x_get_mac_addr(pci_dev, net_dev);
|
else
|
ret = sis900_get_mac_addr(pci_dev, net_dev);
|
|
if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) {
|
eth_hw_addr_random(net_dev);
|
printk(KERN_WARNING "%s: Unreadable or invalid MAC address,"
|
"using random generated one\n", dev_name);
|
}
|
|
/* 630ET : set the mii access mode as software-mode */
|
if (sis_priv->chipset_rev == SIS630ET_900_REV)
|
sw32(cr, ACCESSMODE | sr32(cr));
|
|
/* probe for mii transceiver */
|
if (sis900_mii_probe(net_dev) == 0) {
|
printk(KERN_WARNING "%s: Error probing MII device.\n",
|
dev_name);
|
ret = -ENODEV;
|
goto err_unmap_rx;
|
}
|
|
/* save our host bridge revision */
|
dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
|
if (dev) {
|
sis_priv->host_bridge_rev = dev->revision;
|
pci_dev_put(dev);
|
}
|
|
ret = register_netdev(net_dev);
|
if (ret)
|
goto err_unmap_rx;
|
|
/* print some information about our NIC */
|
printk(KERN_INFO "%s: %s at 0x%p, IRQ %d, %pM\n",
|
net_dev->name, card_name, ioaddr, pci_dev->irq,
|
net_dev->dev_addr);
|
|
/* Detect Wake on Lan support */
|
ret = (sr32(CFGPMC) & PMESP) >> 27;
|
if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
|
printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
|
|
return 0;
|
|
err_unmap_rx:
|
dma_free_coherent(&pci_dev->dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
|
sis_priv->rx_ring_dma);
|
err_unmap_tx:
|
dma_free_coherent(&pci_dev->dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
|
sis_priv->tx_ring_dma);
|
err_out_unmap:
|
pci_iounmap(pci_dev, ioaddr);
|
err_out:
|
free_netdev(net_dev);
|
return ret;
|
}
|
|
/**
|
* sis900_mii_probe - Probe MII PHY for sis900
|
* @net_dev: the net device to probe for
|
*
|
* Search for total of 32 possible mii phy addresses.
|
* Identify and set current phy if found one,
|
* return error if it failed to found.
|
*/
|
|
static int sis900_mii_probe(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
const char *dev_name = pci_name(sis_priv->pci_dev);
|
u16 poll_bit = MII_STAT_LINK, status = 0;
|
unsigned long timeout = jiffies + 5 * HZ;
|
int phy_addr;
|
|
sis_priv->mii = NULL;
|
|
/* search for total of 32 possible mii phy addresses */
|
for (phy_addr = 0; phy_addr < 32; phy_addr++) {
|
struct mii_phy * mii_phy = NULL;
|
u16 mii_status;
|
int i;
|
|
mii_phy = NULL;
|
for(i = 0; i < 2; i++)
|
mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
|
|
if (mii_status == 0xffff || mii_status == 0x0000) {
|
if (netif_msg_probe(sis_priv))
|
printk(KERN_DEBUG "%s: MII at address %d"
|
" not accessible\n",
|
dev_name, phy_addr);
|
continue;
|
}
|
|
if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
|
mii_phy = sis_priv->first_mii;
|
while (mii_phy) {
|
struct mii_phy *phy;
|
phy = mii_phy;
|
mii_phy = mii_phy->next;
|
kfree(phy);
|
}
|
return 0;
|
}
|
|
mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
|
mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
|
mii_phy->phy_addr = phy_addr;
|
mii_phy->status = mii_status;
|
mii_phy->next = sis_priv->mii;
|
sis_priv->mii = mii_phy;
|
sis_priv->first_mii = mii_phy;
|
|
for (i = 0; mii_chip_table[i].phy_id1; i++)
|
if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
|
((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
|
mii_phy->phy_types = mii_chip_table[i].phy_types;
|
if (mii_chip_table[i].phy_types == MIX)
|
mii_phy->phy_types =
|
(mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
|
printk(KERN_INFO "%s: %s transceiver found "
|
"at address %d.\n",
|
dev_name,
|
mii_chip_table[i].name,
|
phy_addr);
|
break;
|
}
|
|
if( !mii_chip_table[i].phy_id1 ) {
|
printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
|
dev_name, phy_addr);
|
mii_phy->phy_types = UNKNOWN;
|
}
|
}
|
|
if (sis_priv->mii == NULL) {
|
printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
|
return 0;
|
}
|
|
/* select default PHY for mac */
|
sis_priv->mii = NULL;
|
sis900_default_phy( net_dev );
|
|
/* Reset phy if default phy is internal sis900 */
|
if ((sis_priv->mii->phy_id0 == 0x001D) &&
|
((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
|
status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
|
|
/* workaround for ICS1893 PHY */
|
if ((sis_priv->mii->phy_id0 == 0x0015) &&
|
((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
|
mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
|
|
if(status & MII_STAT_LINK){
|
while (poll_bit) {
|
yield();
|
|
poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
|
if (time_after_eq(jiffies, timeout)) {
|
printk(KERN_WARNING "%s: reset phy and link down now\n",
|
dev_name);
|
return -ETIME;
|
}
|
}
|
}
|
|
if (sis_priv->chipset_rev == SIS630E_900_REV) {
|
/* SiS 630E has some bugs on default value of PHY registers */
|
mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
|
mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
|
mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
|
mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
|
//mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
|
}
|
|
if (sis_priv->mii->status & MII_STAT_LINK)
|
netif_carrier_on(net_dev);
|
else
|
netif_carrier_off(net_dev);
|
|
return 1;
|
}
|
|
/**
|
* sis900_default_phy - Select default PHY for sis900 mac.
|
* @net_dev: the net device to probe for
|
*
|
* Select first detected PHY with link as default.
|
* If no one is link on, select PHY whose types is HOME as default.
|
* If HOME doesn't exist, select LAN.
|
*/
|
|
static u16 sis900_default_phy(struct net_device * net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
struct mii_phy *phy = NULL, *phy_home = NULL,
|
*default_phy = NULL, *phy_lan = NULL;
|
u16 status;
|
|
for (phy=sis_priv->first_mii; phy; phy=phy->next) {
|
status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
|
status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
|
|
/* Link ON & Not select default PHY & not ghost PHY */
|
if ((status & MII_STAT_LINK) && !default_phy &&
|
(phy->phy_types != UNKNOWN)) {
|
default_phy = phy;
|
} else {
|
status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
|
mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
|
status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
|
if (phy->phy_types == HOME)
|
phy_home = phy;
|
else if(phy->phy_types == LAN)
|
phy_lan = phy;
|
}
|
}
|
|
if (!default_phy && phy_home)
|
default_phy = phy_home;
|
else if (!default_phy && phy_lan)
|
default_phy = phy_lan;
|
else if (!default_phy)
|
default_phy = sis_priv->first_mii;
|
|
if (sis_priv->mii != default_phy) {
|
sis_priv->mii = default_phy;
|
sis_priv->cur_phy = default_phy->phy_addr;
|
printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
|
pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
|
}
|
|
sis_priv->mii_info.phy_id = sis_priv->cur_phy;
|
|
status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
|
status &= (~MII_CNTL_ISOLATE);
|
|
mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
|
status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
|
status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
|
|
return status;
|
}
|
|
|
/**
|
* sis900_set_capability - set the media capability of network adapter.
|
* @net_dev : the net device to probe for
|
* @phy : default PHY
|
*
|
* Set the media capability of network adapter according to
|
* mii status register. It's necessary before auto-negotiate.
|
*/
|
|
static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
|
{
|
u16 cap;
|
|
mdio_read(net_dev, phy->phy_addr, MII_STATUS);
|
mdio_read(net_dev, phy->phy_addr, MII_STATUS);
|
|
cap = MII_NWAY_CSMA_CD |
|
((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
|
((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
|
((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
|
((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
|
|
mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
|
}
|
|
|
/* Delay between EEPROM clock transitions. */
|
#define eeprom_delay() sr32(mear)
|
|
/**
|
* read_eeprom - Read Serial EEPROM
|
* @ioaddr: base i/o address
|
* @location: the EEPROM location to read
|
*
|
* Read Serial EEPROM through EEPROM Access Register.
|
* Note that location is in word (16 bits) unit
|
*/
|
|
static u16 read_eeprom(void __iomem *ioaddr, int location)
|
{
|
u32 read_cmd = location | EEread;
|
int i;
|
u16 retval = 0;
|
|
sw32(mear, 0);
|
eeprom_delay();
|
sw32(mear, EECS);
|
eeprom_delay();
|
|
/* Shift the read command (9) bits out. */
|
for (i = 8; i >= 0; i--) {
|
u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
|
|
sw32(mear, dataval);
|
eeprom_delay();
|
sw32(mear, dataval | EECLK);
|
eeprom_delay();
|
}
|
sw32(mear, EECS);
|
eeprom_delay();
|
|
/* read the 16-bits data in */
|
for (i = 16; i > 0; i--) {
|
sw32(mear, EECS);
|
eeprom_delay();
|
sw32(mear, EECS | EECLK);
|
eeprom_delay();
|
retval = (retval << 1) | ((sr32(mear) & EEDO) ? 1 : 0);
|
eeprom_delay();
|
}
|
|
/* Terminate the EEPROM access. */
|
sw32(mear, 0);
|
eeprom_delay();
|
|
return retval;
|
}
|
|
/* Read and write the MII management registers using software-generated
|
serial MDIO protocol. Note that the command bits and data bits are
|
send out separately */
|
#define mdio_delay() sr32(mear)
|
|
static void mdio_idle(struct sis900_private *sp)
|
{
|
void __iomem *ioaddr = sp->ioaddr;
|
|
sw32(mear, MDIO | MDDIR);
|
mdio_delay();
|
sw32(mear, MDIO | MDDIR | MDC);
|
}
|
|
/* Synchronize the MII management interface by shifting 32 one bits out. */
|
static void mdio_reset(struct sis900_private *sp)
|
{
|
void __iomem *ioaddr = sp->ioaddr;
|
int i;
|
|
for (i = 31; i >= 0; i--) {
|
sw32(mear, MDDIR | MDIO);
|
mdio_delay();
|
sw32(mear, MDDIR | MDIO | MDC);
|
mdio_delay();
|
}
|
}
|
|
/**
|
* mdio_read - read MII PHY register
|
* @net_dev: the net device to read
|
* @phy_id: the phy address to read
|
* @location: the phy register id to read
|
*
|
* Read MII registers through MDIO and MDC
|
* using MDIO management frame structure and protocol(defined by ISO/IEC).
|
* Please see SiS7014 or ICS spec
|
*/
|
|
static int mdio_read(struct net_device *net_dev, int phy_id, int location)
|
{
|
int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
|
struct sis900_private *sp = netdev_priv(net_dev);
|
void __iomem *ioaddr = sp->ioaddr;
|
u16 retval = 0;
|
int i;
|
|
mdio_reset(sp);
|
mdio_idle(sp);
|
|
for (i = 15; i >= 0; i--) {
|
int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
|
|
sw32(mear, dataval);
|
mdio_delay();
|
sw32(mear, dataval | MDC);
|
mdio_delay();
|
}
|
|
/* Read the 16 data bits. */
|
for (i = 16; i > 0; i--) {
|
sw32(mear, 0);
|
mdio_delay();
|
retval = (retval << 1) | ((sr32(mear) & MDIO) ? 1 : 0);
|
sw32(mear, MDC);
|
mdio_delay();
|
}
|
sw32(mear, 0x00);
|
|
return retval;
|
}
|
|
/**
|
* mdio_write - write MII PHY register
|
* @net_dev: the net device to write
|
* @phy_id: the phy address to write
|
* @location: the phy register id to write
|
* @value: the register value to write with
|
*
|
* Write MII registers with @value through MDIO and MDC
|
* using MDIO management frame structure and protocol(defined by ISO/IEC)
|
* please see SiS7014 or ICS spec
|
*/
|
|
static void mdio_write(struct net_device *net_dev, int phy_id, int location,
|
int value)
|
{
|
int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
|
struct sis900_private *sp = netdev_priv(net_dev);
|
void __iomem *ioaddr = sp->ioaddr;
|
int i;
|
|
mdio_reset(sp);
|
mdio_idle(sp);
|
|
/* Shift the command bits out. */
|
for (i = 15; i >= 0; i--) {
|
int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
|
|
sw8(mear, dataval);
|
mdio_delay();
|
sw8(mear, dataval | MDC);
|
mdio_delay();
|
}
|
mdio_delay();
|
|
/* Shift the value bits out. */
|
for (i = 15; i >= 0; i--) {
|
int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
|
|
sw32(mear, dataval);
|
mdio_delay();
|
sw32(mear, dataval | MDC);
|
mdio_delay();
|
}
|
mdio_delay();
|
|
/* Clear out extra bits. */
|
for (i = 2; i > 0; i--) {
|
sw8(mear, 0);
|
mdio_delay();
|
sw8(mear, MDC);
|
mdio_delay();
|
}
|
sw32(mear, 0x00);
|
}
|
|
|
/**
|
* sis900_reset_phy - reset sis900 mii phy.
|
* @net_dev: the net device to write
|
* @phy_addr: default phy address
|
*
|
* Some specific phy can't work properly without reset.
|
* This function will be called during initialization and
|
* link status change from ON to DOWN.
|
*/
|
|
static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
|
{
|
int i;
|
u16 status;
|
|
for (i = 0; i < 2; i++)
|
status = mdio_read(net_dev, phy_addr, MII_STATUS);
|
|
mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
|
|
return status;
|
}
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
/*
|
* Polling 'interrupt' - used by things like netconsole to send skbs
|
* without having to re-enable interrupts. It's not called while
|
* the interrupt routine is executing.
|
*/
|
static void sis900_poll(struct net_device *dev)
|
{
|
struct sis900_private *sp = netdev_priv(dev);
|
const int irq = sp->pci_dev->irq;
|
|
disable_irq(irq);
|
sis900_interrupt(irq, dev);
|
enable_irq(irq);
|
}
|
#endif
|
|
/**
|
* sis900_open - open sis900 device
|
* @net_dev: the net device to open
|
*
|
* Do some initialization and start net interface.
|
* enable interrupts and set sis900 timer.
|
*/
|
|
static int
|
sis900_open(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
int ret;
|
|
/* Soft reset the chip. */
|
sis900_reset(net_dev);
|
|
/* Equalizer workaround Rule */
|
sis630_set_eq(net_dev, sis_priv->chipset_rev);
|
|
ret = request_irq(sis_priv->pci_dev->irq, sis900_interrupt, IRQF_SHARED,
|
net_dev->name, net_dev);
|
if (ret)
|
return ret;
|
|
sis900_init_rxfilter(net_dev);
|
|
sis900_init_tx_ring(net_dev);
|
sis900_init_rx_ring(net_dev);
|
|
set_rx_mode(net_dev);
|
|
netif_start_queue(net_dev);
|
|
/* Workaround for EDB */
|
sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
|
|
/* Enable all known interrupts by setting the interrupt mask. */
|
sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxDESC);
|
sw32(cr, RxENA | sr32(cr));
|
sw32(ier, IE);
|
|
sis900_check_mode(net_dev, sis_priv->mii);
|
|
/* Set the timer to switch to check for link beat and perhaps switch
|
to an alternate media type. */
|
timer_setup(&sis_priv->timer, sis900_timer, 0);
|
sis_priv->timer.expires = jiffies + HZ;
|
add_timer(&sis_priv->timer);
|
|
return 0;
|
}
|
|
/**
|
* sis900_init_rxfilter - Initialize the Rx filter
|
* @net_dev: the net device to initialize for
|
*
|
* Set receive filter address to our MAC address
|
* and enable packet filtering.
|
*/
|
|
static void
|
sis900_init_rxfilter (struct net_device * net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
u32 rfcrSave;
|
u32 i;
|
|
rfcrSave = sr32(rfcr);
|
|
/* disable packet filtering before setting filter */
|
sw32(rfcr, rfcrSave & ~RFEN);
|
|
/* load MAC addr to filter data register */
|
for (i = 0 ; i < 3 ; i++) {
|
u32 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
|
|
sw32(rfcr, i << RFADDR_shift);
|
sw32(rfdr, w);
|
|
if (netif_msg_hw(sis_priv)) {
|
printk(KERN_DEBUG "%s: Receive Filter Address[%d]=%x\n",
|
net_dev->name, i, sr32(rfdr));
|
}
|
}
|
|
/* enable packet filtering */
|
sw32(rfcr, rfcrSave | RFEN);
|
}
|
|
/**
|
* sis900_init_tx_ring - Initialize the Tx descriptor ring
|
* @net_dev: the net device to initialize for
|
*
|
* Initialize the Tx descriptor ring,
|
*/
|
|
static void
|
sis900_init_tx_ring(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
int i;
|
|
sis_priv->tx_full = 0;
|
sis_priv->dirty_tx = sis_priv->cur_tx = 0;
|
|
for (i = 0; i < NUM_TX_DESC; i++) {
|
sis_priv->tx_skbuff[i] = NULL;
|
|
sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
|
((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
|
sis_priv->tx_ring[i].cmdsts = 0;
|
sis_priv->tx_ring[i].bufptr = 0;
|
}
|
|
/* load Transmit Descriptor Register */
|
sw32(txdp, sis_priv->tx_ring_dma);
|
if (netif_msg_hw(sis_priv))
|
printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
|
net_dev->name, sr32(txdp));
|
}
|
|
/**
|
* sis900_init_rx_ring - Initialize the Rx descriptor ring
|
* @net_dev: the net device to initialize for
|
*
|
* Initialize the Rx descriptor ring,
|
* and pre-allocate receive buffers (socket buffer)
|
*/
|
|
static void
|
sis900_init_rx_ring(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
int i;
|
|
sis_priv->cur_rx = 0;
|
sis_priv->dirty_rx = 0;
|
|
/* init RX descriptor */
|
for (i = 0; i < NUM_RX_DESC; i++) {
|
sis_priv->rx_skbuff[i] = NULL;
|
|
sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
|
((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
|
sis_priv->rx_ring[i].cmdsts = 0;
|
sis_priv->rx_ring[i].bufptr = 0;
|
}
|
|
/* allocate sock buffers */
|
for (i = 0; i < NUM_RX_DESC; i++) {
|
struct sk_buff *skb;
|
|
if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
|
/* not enough memory for skbuff, this makes a "hole"
|
on the buffer ring, it is not clear how the
|
hardware will react to this kind of degenerated
|
buffer */
|
break;
|
}
|
sis_priv->rx_skbuff[i] = skb;
|
sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
|
sis_priv->rx_ring[i].bufptr = dma_map_single(&sis_priv->pci_dev->dev,
|
skb->data,
|
RX_BUF_SIZE,
|
DMA_FROM_DEVICE);
|
if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,
|
sis_priv->rx_ring[i].bufptr))) {
|
dev_kfree_skb(skb);
|
sis_priv->rx_skbuff[i] = NULL;
|
break;
|
}
|
}
|
sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
|
|
/* load Receive Descriptor Register */
|
sw32(rxdp, sis_priv->rx_ring_dma);
|
if (netif_msg_hw(sis_priv))
|
printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
|
net_dev->name, sr32(rxdp));
|
}
|
|
/**
|
* sis630_set_eq - set phy equalizer value for 630 LAN
|
* @net_dev: the net device to set equalizer value
|
* @revision: 630 LAN revision number
|
*
|
* 630E equalizer workaround rule(Cyrus Huang 08/15)
|
* PHY register 14h(Test)
|
* Bit 14: 0 -- Automatically detect (default)
|
* 1 -- Manually set Equalizer filter
|
* Bit 13: 0 -- (Default)
|
* 1 -- Speed up convergence of equalizer setting
|
* Bit 9 : 0 -- (Default)
|
* 1 -- Disable Baseline Wander
|
* Bit 3~7 -- Equalizer filter setting
|
* Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
|
* Then calculate equalizer value
|
* Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
|
* Link Off:Set Bit 13 to 1, Bit 14 to 0
|
* Calculate Equalizer value:
|
* When Link is ON and Bit 14 is 0, SIS900PHY will auto-detect proper equalizer value.
|
* When the equalizer is stable, this value is not a fixed value. It will be within
|
* a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
|
* 0 <= max <= 4 --> set equalizer to max
|
* 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
|
* max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
|
*/
|
|
static void sis630_set_eq(struct net_device *net_dev, u8 revision)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
u16 reg14h, eq_value=0, max_value=0, min_value=0;
|
int i, maxcount=10;
|
|
if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
|
revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
|
return;
|
|
if (netif_carrier_ok(net_dev)) {
|
reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
|
mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
|
(0x2200 | reg14h) & 0xBFFF);
|
for (i=0; i < maxcount; i++) {
|
eq_value = (0x00F8 & mdio_read(net_dev,
|
sis_priv->cur_phy, MII_RESV)) >> 3;
|
if (i == 0)
|
max_value=min_value=eq_value;
|
max_value = (eq_value > max_value) ?
|
eq_value : max_value;
|
min_value = (eq_value < min_value) ?
|
eq_value : min_value;
|
}
|
/* 630E rule to determine the equalizer value */
|
if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
|
revision == SIS630ET_900_REV) {
|
if (max_value < 5)
|
eq_value = max_value;
|
else if (max_value >= 5 && max_value < 15)
|
eq_value = (max_value == min_value) ?
|
max_value+2 : max_value+1;
|
else if (max_value >= 15)
|
eq_value=(max_value == min_value) ?
|
max_value+6 : max_value+5;
|
}
|
/* 630B0&B1 rule to determine the equalizer value */
|
if (revision == SIS630A_900_REV &&
|
(sis_priv->host_bridge_rev == SIS630B0 ||
|
sis_priv->host_bridge_rev == SIS630B1)) {
|
if (max_value == 0)
|
eq_value = 3;
|
else
|
eq_value = (max_value + min_value + 1)/2;
|
}
|
/* write equalizer value and setting */
|
reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
|
reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
|
reg14h = (reg14h | 0x6000) & 0xFDFF;
|
mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
|
} else {
|
reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
|
if (revision == SIS630A_900_REV &&
|
(sis_priv->host_bridge_rev == SIS630B0 ||
|
sis_priv->host_bridge_rev == SIS630B1))
|
mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
|
(reg14h | 0x2200) & 0xBFFF);
|
else
|
mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
|
(reg14h | 0x2000) & 0xBFFF);
|
}
|
}
|
|
/**
|
* sis900_timer - sis900 timer routine
|
* @t: timer list containing a pointer to sis900 net device
|
*
|
* On each timer ticks we check two things,
|
* link status (ON/OFF) and link mode (10/100/Full/Half)
|
*/
|
|
static void sis900_timer(struct timer_list *t)
|
{
|
struct sis900_private *sis_priv = from_timer(sis_priv, t, timer);
|
struct net_device *net_dev = sis_priv->mii_info.dev;
|
struct mii_phy *mii_phy = sis_priv->mii;
|
static const int next_tick = 5*HZ;
|
int speed = 0, duplex = 0;
|
u16 status;
|
|
status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
|
status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
|
|
/* Link OFF -> ON */
|
if (!netif_carrier_ok(net_dev)) {
|
LookForLink:
|
/* Search for new PHY */
|
status = sis900_default_phy(net_dev);
|
mii_phy = sis_priv->mii;
|
|
if (status & MII_STAT_LINK) {
|
WARN_ON(!(status & MII_STAT_AUTO_DONE));
|
|
sis900_read_mode(net_dev, &speed, &duplex);
|
if (duplex) {
|
sis900_set_mode(sis_priv, speed, duplex);
|
sis630_set_eq(net_dev, sis_priv->chipset_rev);
|
netif_carrier_on(net_dev);
|
}
|
}
|
} else {
|
/* Link ON -> OFF */
|
if (!(status & MII_STAT_LINK)){
|
netif_carrier_off(net_dev);
|
if(netif_msg_link(sis_priv))
|
printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
|
|
/* Change mode issue */
|
if ((mii_phy->phy_id0 == 0x001D) &&
|
((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
|
sis900_reset_phy(net_dev, sis_priv->cur_phy);
|
|
sis630_set_eq(net_dev, sis_priv->chipset_rev);
|
|
goto LookForLink;
|
}
|
}
|
|
sis_priv->timer.expires = jiffies + next_tick;
|
add_timer(&sis_priv->timer);
|
}
|
|
/**
|
* sis900_check_mode - check the media mode for sis900
|
* @net_dev: the net device to be checked
|
* @mii_phy: the mii phy
|
*
|
* Older driver gets the media mode from mii status output
|
* register. Now we set our media capability and auto-negotiate
|
* to get the upper bound of speed and duplex between two ends.
|
* If the types of mii phy is HOME, it doesn't need to auto-negotiate
|
* and autong_complete should be set to 1.
|
*/
|
|
static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
int speed, duplex;
|
|
if (mii_phy->phy_types == LAN) {
|
sw32(cfg, ~EXD & sr32(cfg));
|
sis900_set_capability(net_dev , mii_phy);
|
sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
|
} else {
|
sw32(cfg, EXD | sr32(cfg));
|
speed = HW_SPEED_HOME;
|
duplex = FDX_CAPABLE_HALF_SELECTED;
|
sis900_set_mode(sis_priv, speed, duplex);
|
sis_priv->autong_complete = 1;
|
}
|
}
|
|
/**
|
* sis900_set_mode - Set the media mode of mac register.
|
* @sp: the device private data
|
* @speed : the transmit speed to be determined
|
* @duplex: the duplex mode to be determined
|
*
|
* Set the media mode of mac register txcfg/rxcfg according to
|
* speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
|
* bus is used instead of PCI bus. When this bit is set 1, the
|
* Max DMA Burst Size for TX/RX DMA should be no larger than 16
|
* double words.
|
*/
|
|
static void sis900_set_mode(struct sis900_private *sp, int speed, int duplex)
|
{
|
void __iomem *ioaddr = sp->ioaddr;
|
u32 tx_flags = 0, rx_flags = 0;
|
|
if (sr32( cfg) & EDB_MASTER_EN) {
|
tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
|
(TX_FILL_THRESH << TxFILLT_shift);
|
rx_flags = DMA_BURST_64 << RxMXDMA_shift;
|
} else {
|
tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
|
(TX_FILL_THRESH << TxFILLT_shift);
|
rx_flags = DMA_BURST_512 << RxMXDMA_shift;
|
}
|
|
if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
|
rx_flags |= (RxDRNT_10 << RxDRNT_shift);
|
tx_flags |= (TxDRNT_10 << TxDRNT_shift);
|
} else {
|
rx_flags |= (RxDRNT_100 << RxDRNT_shift);
|
tx_flags |= (TxDRNT_100 << TxDRNT_shift);
|
}
|
|
if (duplex == FDX_CAPABLE_FULL_SELECTED) {
|
tx_flags |= (TxCSI | TxHBI);
|
rx_flags |= RxATX;
|
}
|
|
#if IS_ENABLED(CONFIG_VLAN_8021Q)
|
/* Can accept Jumbo packet */
|
rx_flags |= RxAJAB;
|
#endif
|
|
sw32(txcfg, tx_flags);
|
sw32(rxcfg, rx_flags);
|
}
|
|
/**
|
* sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
|
* @net_dev: the net device to read mode for
|
* @phy_addr: mii phy address
|
*
|
* If the adapter is link-on, set the auto-negotiate enable/reset bit.
|
* autong_complete should be set to 0 when starting auto-negotiation.
|
* autong_complete should be set to 1 if we didn't start auto-negotiation.
|
* sis900_timer will wait for link on again if autong_complete = 0.
|
*/
|
|
static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
int i = 0;
|
u32 status;
|
|
for (i = 0; i < 2; i++)
|
status = mdio_read(net_dev, phy_addr, MII_STATUS);
|
|
if (!(status & MII_STAT_LINK)){
|
if(netif_msg_link(sis_priv))
|
printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
|
sis_priv->autong_complete = 1;
|
netif_carrier_off(net_dev);
|
return;
|
}
|
|
/* (Re)start AutoNegotiate */
|
mdio_write(net_dev, phy_addr, MII_CONTROL,
|
MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
|
sis_priv->autong_complete = 0;
|
}
|
|
|
/**
|
* sis900_read_mode - read media mode for sis900 internal phy
|
* @net_dev: the net device to read mode for
|
* @speed : the transmit speed to be determined
|
* @duplex : the duplex mode to be determined
|
*
|
* The capability of remote end will be put in mii register autorec
|
* after auto-negotiation. Use AND operation to get the upper bound
|
* of speed and duplex between two ends.
|
*/
|
|
static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
struct mii_phy *phy = sis_priv->mii;
|
int phy_addr = sis_priv->cur_phy;
|
u32 status;
|
u16 autoadv, autorec;
|
int i;
|
|
for (i = 0; i < 2; i++)
|
status = mdio_read(net_dev, phy_addr, MII_STATUS);
|
|
if (!(status & MII_STAT_LINK))
|
return;
|
|
/* AutoNegotiate completed */
|
autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
|
autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
|
status = autoadv & autorec;
|
|
*speed = HW_SPEED_10_MBPS;
|
*duplex = FDX_CAPABLE_HALF_SELECTED;
|
|
if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
|
*speed = HW_SPEED_100_MBPS;
|
if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
|
*duplex = FDX_CAPABLE_FULL_SELECTED;
|
|
sis_priv->autong_complete = 1;
|
|
/* Workaround for Realtek RTL8201 PHY issue */
|
if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
|
if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
|
*duplex = FDX_CAPABLE_FULL_SELECTED;
|
if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
|
*speed = HW_SPEED_100_MBPS;
|
}
|
|
if(netif_msg_link(sis_priv))
|
printk(KERN_INFO "%s: Media Link On %s %s-duplex\n",
|
net_dev->name,
|
*speed == HW_SPEED_100_MBPS ?
|
"100mbps" : "10mbps",
|
*duplex == FDX_CAPABLE_FULL_SELECTED ?
|
"full" : "half");
|
}
|
|
/**
|
* sis900_tx_timeout - sis900 transmit timeout routine
|
* @net_dev: the net device to transmit
|
* @txqueue: index of hanging queue
|
*
|
* print transmit timeout status
|
* disable interrupts and do some tasks
|
*/
|
|
static void sis900_tx_timeout(struct net_device *net_dev, unsigned int txqueue)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
unsigned long flags;
|
int i;
|
|
if (netif_msg_tx_err(sis_priv)) {
|
printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x\n",
|
net_dev->name, sr32(cr), sr32(isr));
|
}
|
|
/* Disable interrupts by clearing the interrupt mask. */
|
sw32(imr, 0x0000);
|
|
/* use spinlock to prevent interrupt handler accessing buffer ring */
|
spin_lock_irqsave(&sis_priv->lock, flags);
|
|
/* discard unsent packets */
|
sis_priv->dirty_tx = sis_priv->cur_tx = 0;
|
for (i = 0; i < NUM_TX_DESC; i++) {
|
struct sk_buff *skb = sis_priv->tx_skbuff[i];
|
|
if (skb) {
|
dma_unmap_single(&sis_priv->pci_dev->dev,
|
sis_priv->tx_ring[i].bufptr,
|
skb->len, DMA_TO_DEVICE);
|
dev_kfree_skb_irq(skb);
|
sis_priv->tx_skbuff[i] = NULL;
|
sis_priv->tx_ring[i].cmdsts = 0;
|
sis_priv->tx_ring[i].bufptr = 0;
|
net_dev->stats.tx_dropped++;
|
}
|
}
|
sis_priv->tx_full = 0;
|
netif_wake_queue(net_dev);
|
|
spin_unlock_irqrestore(&sis_priv->lock, flags);
|
|
netif_trans_update(net_dev); /* prevent tx timeout */
|
|
/* load Transmit Descriptor Register */
|
sw32(txdp, sis_priv->tx_ring_dma);
|
|
/* Enable all known interrupts by setting the interrupt mask. */
|
sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxDESC);
|
}
|
|
/**
|
* sis900_start_xmit - sis900 start transmit routine
|
* @skb: socket buffer pointer to put the data being transmitted
|
* @net_dev: the net device to transmit with
|
*
|
* Set the transmit buffer descriptor,
|
* and write TxENA to enable transmit state machine.
|
* tell upper layer if the buffer is full
|
*/
|
|
static netdev_tx_t
|
sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
unsigned int entry;
|
unsigned long flags;
|
unsigned int index_cur_tx, index_dirty_tx;
|
unsigned int count_dirty_tx;
|
|
spin_lock_irqsave(&sis_priv->lock, flags);
|
|
/* Calculate the next Tx descriptor entry. */
|
entry = sis_priv->cur_tx % NUM_TX_DESC;
|
sis_priv->tx_skbuff[entry] = skb;
|
|
/* set the transmit buffer descriptor and enable Transmit State Machine */
|
sis_priv->tx_ring[entry].bufptr = dma_map_single(&sis_priv->pci_dev->dev,
|
skb->data, skb->len,
|
DMA_TO_DEVICE);
|
if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,
|
sis_priv->tx_ring[entry].bufptr))) {
|
dev_kfree_skb_any(skb);
|
sis_priv->tx_skbuff[entry] = NULL;
|
net_dev->stats.tx_dropped++;
|
spin_unlock_irqrestore(&sis_priv->lock, flags);
|
return NETDEV_TX_OK;
|
}
|
sis_priv->tx_ring[entry].cmdsts = (OWN | INTR | skb->len);
|
sw32(cr, TxENA | sr32(cr));
|
|
sis_priv->cur_tx ++;
|
index_cur_tx = sis_priv->cur_tx;
|
index_dirty_tx = sis_priv->dirty_tx;
|
|
for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
|
count_dirty_tx ++;
|
|
if (index_cur_tx == index_dirty_tx) {
|
/* dirty_tx is met in the cycle of cur_tx, buffer full */
|
sis_priv->tx_full = 1;
|
netif_stop_queue(net_dev);
|
} else if (count_dirty_tx < NUM_TX_DESC) {
|
/* Typical path, tell upper layer that more transmission is possible */
|
netif_start_queue(net_dev);
|
} else {
|
/* buffer full, tell upper layer no more transmission */
|
sis_priv->tx_full = 1;
|
netif_stop_queue(net_dev);
|
}
|
|
spin_unlock_irqrestore(&sis_priv->lock, flags);
|
|
if (netif_msg_tx_queued(sis_priv))
|
printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
|
"to slot %d.\n",
|
net_dev->name, skb->data, (int)skb->len, entry);
|
|
return NETDEV_TX_OK;
|
}
|
|
/**
|
* sis900_interrupt - sis900 interrupt handler
|
* @irq: the irq number
|
* @dev_instance: the client data object
|
*
|
* The interrupt handler does all of the Rx thread work,
|
* and cleans up after the Tx thread
|
*/
|
|
static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
|
{
|
struct net_device *net_dev = dev_instance;
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
int boguscnt = max_interrupt_work;
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
u32 status;
|
unsigned int handled = 0;
|
|
spin_lock (&sis_priv->lock);
|
|
do {
|
status = sr32(isr);
|
|
if ((status & (HIBERR|TxURN|TxERR|TxDESC|RxORN|RxERR|RxOK)) == 0)
|
/* nothing interesting happened */
|
break;
|
handled = 1;
|
|
/* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
|
if (status & (RxORN | RxERR | RxOK))
|
/* Rx interrupt */
|
sis900_rx(net_dev);
|
|
if (status & (TxURN | TxERR | TxDESC))
|
/* Tx interrupt */
|
sis900_finish_xmit(net_dev);
|
|
/* something strange happened !!! */
|
if (status & HIBERR) {
|
if(netif_msg_intr(sis_priv))
|
printk(KERN_INFO "%s: Abnormal interrupt, "
|
"status %#8.8x.\n", net_dev->name, status);
|
break;
|
}
|
if (--boguscnt < 0) {
|
if(netif_msg_intr(sis_priv))
|
printk(KERN_INFO "%s: Too much work at interrupt, "
|
"interrupt status = %#8.8x.\n",
|
net_dev->name, status);
|
break;
|
}
|
} while (1);
|
|
if(netif_msg_intr(sis_priv))
|
printk(KERN_DEBUG "%s: exiting interrupt, "
|
"interrupt status = %#8.8x\n",
|
net_dev->name, sr32(isr));
|
|
spin_unlock (&sis_priv->lock);
|
return IRQ_RETVAL(handled);
|
}
|
|
/**
|
* sis900_rx - sis900 receive routine
|
* @net_dev: the net device which receives data
|
*
|
* Process receive interrupt events,
|
* put buffer to higher layer and refill buffer pool
|
* Note: This function is called by interrupt handler,
|
* don't do "too much" work here
|
*/
|
|
static int sis900_rx(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
|
u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
|
int rx_work_limit;
|
|
if (netif_msg_rx_status(sis_priv))
|
printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
|
"status:0x%8.8x\n",
|
sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
|
rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
|
|
while (rx_status & OWN) {
|
unsigned int rx_size;
|
unsigned int data_size;
|
|
if (--rx_work_limit < 0)
|
break;
|
|
data_size = rx_status & DSIZE;
|
rx_size = data_size - CRC_SIZE;
|
|
#if IS_ENABLED(CONFIG_VLAN_8021Q)
|
/* ``TOOLONG'' flag means jumbo packet received. */
|
if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
|
rx_status &= (~ ((unsigned int)TOOLONG));
|
#endif
|
|
if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
|
/* corrupted packet received */
|
if (netif_msg_rx_err(sis_priv))
|
printk(KERN_DEBUG "%s: Corrupted packet "
|
"received, buffer status = 0x%8.8x/%d.\n",
|
net_dev->name, rx_status, data_size);
|
net_dev->stats.rx_errors++;
|
if (rx_status & OVERRUN)
|
net_dev->stats.rx_over_errors++;
|
if (rx_status & (TOOLONG|RUNT))
|
net_dev->stats.rx_length_errors++;
|
if (rx_status & (RXISERR | FAERR))
|
net_dev->stats.rx_frame_errors++;
|
if (rx_status & CRCERR)
|
net_dev->stats.rx_crc_errors++;
|
/* reset buffer descriptor state */
|
sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
|
} else {
|
struct sk_buff * skb;
|
struct sk_buff * rx_skb;
|
|
dma_unmap_single(&sis_priv->pci_dev->dev,
|
sis_priv->rx_ring[entry].bufptr,
|
RX_BUF_SIZE, DMA_FROM_DEVICE);
|
|
/* refill the Rx buffer, what if there is not enough
|
* memory for new socket buffer ?? */
|
if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
|
/*
|
* Not enough memory to refill the buffer
|
* so we need to recycle the old one so
|
* as to avoid creating a memory hole
|
* in the rx ring
|
*/
|
skb = sis_priv->rx_skbuff[entry];
|
net_dev->stats.rx_dropped++;
|
goto refill_rx_ring;
|
}
|
|
/* This situation should never happen, but due to
|
some unknown bugs, it is possible that
|
we are working on NULL sk_buff :-( */
|
if (sis_priv->rx_skbuff[entry] == NULL) {
|
if (netif_msg_rx_err(sis_priv))
|
printk(KERN_WARNING "%s: NULL pointer "
|
"encountered in Rx ring\n"
|
"cur_rx:%4.4d, dirty_rx:%4.4d\n",
|
net_dev->name, sis_priv->cur_rx,
|
sis_priv->dirty_rx);
|
dev_kfree_skb(skb);
|
break;
|
}
|
|
/* give the socket buffer to upper layers */
|
rx_skb = sis_priv->rx_skbuff[entry];
|
skb_put(rx_skb, rx_size);
|
rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
|
netif_rx(rx_skb);
|
|
/* some network statistics */
|
if ((rx_status & BCAST) == MCAST)
|
net_dev->stats.multicast++;
|
net_dev->stats.rx_bytes += rx_size;
|
net_dev->stats.rx_packets++;
|
sis_priv->dirty_rx++;
|
refill_rx_ring:
|
sis_priv->rx_skbuff[entry] = skb;
|
sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
|
sis_priv->rx_ring[entry].bufptr =
|
dma_map_single(&sis_priv->pci_dev->dev,
|
skb->data, RX_BUF_SIZE,
|
DMA_FROM_DEVICE);
|
if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,
|
sis_priv->rx_ring[entry].bufptr))) {
|
dev_kfree_skb_irq(skb);
|
sis_priv->rx_skbuff[entry] = NULL;
|
break;
|
}
|
}
|
sis_priv->cur_rx++;
|
entry = sis_priv->cur_rx % NUM_RX_DESC;
|
rx_status = sis_priv->rx_ring[entry].cmdsts;
|
} // while
|
|
/* refill the Rx buffer, what if the rate of refilling is slower
|
* than consuming ?? */
|
for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
|
struct sk_buff *skb;
|
|
entry = sis_priv->dirty_rx % NUM_RX_DESC;
|
|
if (sis_priv->rx_skbuff[entry] == NULL) {
|
skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE);
|
if (skb == NULL) {
|
/* not enough memory for skbuff, this makes a
|
* "hole" on the buffer ring, it is not clear
|
* how the hardware will react to this kind
|
* of degenerated buffer */
|
net_dev->stats.rx_dropped++;
|
break;
|
}
|
sis_priv->rx_skbuff[entry] = skb;
|
sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
|
sis_priv->rx_ring[entry].bufptr =
|
dma_map_single(&sis_priv->pci_dev->dev,
|
skb->data, RX_BUF_SIZE,
|
DMA_FROM_DEVICE);
|
if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,
|
sis_priv->rx_ring[entry].bufptr))) {
|
dev_kfree_skb_irq(skb);
|
sis_priv->rx_skbuff[entry] = NULL;
|
break;
|
}
|
}
|
}
|
/* re-enable the potentially idle receive state matchine */
|
sw32(cr , RxENA | sr32(cr));
|
|
return 0;
|
}
|
|
/**
|
* sis900_finish_xmit - finish up transmission of packets
|
* @net_dev: the net device to be transmitted on
|
*
|
* Check for error condition and free socket buffer etc
|
* schedule for more transmission as needed
|
* Note: This function is called by interrupt handler,
|
* don't do "too much" work here
|
*/
|
|
static void sis900_finish_xmit (struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
|
for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
|
struct sk_buff *skb;
|
unsigned int entry;
|
u32 tx_status;
|
|
entry = sis_priv->dirty_tx % NUM_TX_DESC;
|
tx_status = sis_priv->tx_ring[entry].cmdsts;
|
|
if (tx_status & OWN) {
|
/* The packet is not transmitted yet (owned by hardware) !
|
* Note: this is an almost impossible condition
|
* on TxDESC interrupt ('descriptor interrupt') */
|
break;
|
}
|
|
if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
|
/* packet unsuccessfully transmitted */
|
if (netif_msg_tx_err(sis_priv))
|
printk(KERN_DEBUG "%s: Transmit "
|
"error, Tx status %8.8x.\n",
|
net_dev->name, tx_status);
|
net_dev->stats.tx_errors++;
|
if (tx_status & UNDERRUN)
|
net_dev->stats.tx_fifo_errors++;
|
if (tx_status & ABORT)
|
net_dev->stats.tx_aborted_errors++;
|
if (tx_status & NOCARRIER)
|
net_dev->stats.tx_carrier_errors++;
|
if (tx_status & OWCOLL)
|
net_dev->stats.tx_window_errors++;
|
} else {
|
/* packet successfully transmitted */
|
net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
|
net_dev->stats.tx_bytes += tx_status & DSIZE;
|
net_dev->stats.tx_packets++;
|
}
|
/* Free the original skb. */
|
skb = sis_priv->tx_skbuff[entry];
|
dma_unmap_single(&sis_priv->pci_dev->dev,
|
sis_priv->tx_ring[entry].bufptr, skb->len,
|
DMA_TO_DEVICE);
|
dev_consume_skb_irq(skb);
|
sis_priv->tx_skbuff[entry] = NULL;
|
sis_priv->tx_ring[entry].bufptr = 0;
|
sis_priv->tx_ring[entry].cmdsts = 0;
|
}
|
|
if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
|
sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
|
/* The ring is no longer full, clear tx_full and schedule
|
* more transmission by netif_wake_queue(net_dev) */
|
sis_priv->tx_full = 0;
|
netif_wake_queue (net_dev);
|
}
|
}
|
|
/**
|
* sis900_close - close sis900 device
|
* @net_dev: the net device to be closed
|
*
|
* Disable interrupts, stop the Tx and Rx Status Machine
|
* free Tx and RX socket buffer
|
*/
|
|
static int sis900_close(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
struct pci_dev *pdev = sis_priv->pci_dev;
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
struct sk_buff *skb;
|
int i;
|
|
netif_stop_queue(net_dev);
|
|
/* Disable interrupts by clearing the interrupt mask. */
|
sw32(imr, 0x0000);
|
sw32(ier, 0x0000);
|
|
/* Stop the chip's Tx and Rx Status Machine */
|
sw32(cr, RxDIS | TxDIS | sr32(cr));
|
|
del_timer(&sis_priv->timer);
|
|
free_irq(pdev->irq, net_dev);
|
|
/* Free Tx and RX skbuff */
|
for (i = 0; i < NUM_RX_DESC; i++) {
|
skb = sis_priv->rx_skbuff[i];
|
if (skb) {
|
dma_unmap_single(&pdev->dev,
|
sis_priv->rx_ring[i].bufptr,
|
RX_BUF_SIZE, DMA_FROM_DEVICE);
|
dev_kfree_skb(skb);
|
sis_priv->rx_skbuff[i] = NULL;
|
}
|
}
|
for (i = 0; i < NUM_TX_DESC; i++) {
|
skb = sis_priv->tx_skbuff[i];
|
if (skb) {
|
dma_unmap_single(&pdev->dev,
|
sis_priv->tx_ring[i].bufptr,
|
skb->len, DMA_TO_DEVICE);
|
dev_kfree_skb(skb);
|
sis_priv->tx_skbuff[i] = NULL;
|
}
|
}
|
|
/* Green! Put the chip in low-power mode. */
|
|
return 0;
|
}
|
|
/**
|
* sis900_get_drvinfo - Return information about driver
|
* @net_dev: the net device to probe
|
* @info: container for info returned
|
*
|
* Process ethtool command such as "ehtool -i" to show information
|
*/
|
|
static void sis900_get_drvinfo(struct net_device *net_dev,
|
struct ethtool_drvinfo *info)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
|
strlcpy(info->driver, SIS900_MODULE_NAME, sizeof(info->driver));
|
strlcpy(info->version, SIS900_DRV_VERSION, sizeof(info->version));
|
strlcpy(info->bus_info, pci_name(sis_priv->pci_dev),
|
sizeof(info->bus_info));
|
}
|
|
static u32 sis900_get_msglevel(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
return sis_priv->msg_enable;
|
}
|
|
static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
sis_priv->msg_enable = value;
|
}
|
|
static u32 sis900_get_link(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
return mii_link_ok(&sis_priv->mii_info);
|
}
|
|
static int sis900_get_link_ksettings(struct net_device *net_dev,
|
struct ethtool_link_ksettings *cmd)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
spin_lock_irq(&sis_priv->lock);
|
mii_ethtool_get_link_ksettings(&sis_priv->mii_info, cmd);
|
spin_unlock_irq(&sis_priv->lock);
|
return 0;
|
}
|
|
static int sis900_set_link_ksettings(struct net_device *net_dev,
|
const struct ethtool_link_ksettings *cmd)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
int rt;
|
spin_lock_irq(&sis_priv->lock);
|
rt = mii_ethtool_set_link_ksettings(&sis_priv->mii_info, cmd);
|
spin_unlock_irq(&sis_priv->lock);
|
return rt;
|
}
|
|
static int sis900_nway_reset(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
return mii_nway_restart(&sis_priv->mii_info);
|
}
|
|
/**
|
* sis900_set_wol - Set up Wake on Lan registers
|
* @net_dev: the net device to probe
|
* @wol: container for info passed to the driver
|
*
|
* Process ethtool command "wol" to setup wake on lan features.
|
* SiS900 supports sending WoL events if a correct packet is received,
|
* but there is no simple way to filter them to only a subset (broadcast,
|
* multicast, unicast or arp).
|
*/
|
|
static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
u32 cfgpmcsr = 0, pmctrl_bits = 0;
|
|
if (wol->wolopts == 0) {
|
pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
|
cfgpmcsr &= ~PME_EN;
|
pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
|
sw32(pmctrl, pmctrl_bits);
|
if (netif_msg_wol(sis_priv))
|
printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
|
return 0;
|
}
|
|
if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
|
| WAKE_BCAST | WAKE_ARP))
|
return -EINVAL;
|
|
if (wol->wolopts & WAKE_MAGIC)
|
pmctrl_bits |= MAGICPKT;
|
if (wol->wolopts & WAKE_PHY)
|
pmctrl_bits |= LINKON;
|
|
sw32(pmctrl, pmctrl_bits);
|
|
pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
|
cfgpmcsr |= PME_EN;
|
pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
|
if (netif_msg_wol(sis_priv))
|
printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
|
|
return 0;
|
}
|
|
static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
|
{
|
struct sis900_private *sp = netdev_priv(net_dev);
|
void __iomem *ioaddr = sp->ioaddr;
|
u32 pmctrl_bits;
|
|
pmctrl_bits = sr32(pmctrl);
|
if (pmctrl_bits & MAGICPKT)
|
wol->wolopts |= WAKE_MAGIC;
|
if (pmctrl_bits & LINKON)
|
wol->wolopts |= WAKE_PHY;
|
|
wol->supported = (WAKE_PHY | WAKE_MAGIC);
|
}
|
|
static int sis900_get_eeprom_len(struct net_device *dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(dev);
|
|
return sis_priv->eeprom_size;
|
}
|
|
static int sis900_read_eeprom(struct net_device *net_dev, u8 *buf)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
int wait, ret = -EAGAIN;
|
u16 signature;
|
u16 *ebuf = (u16 *)buf;
|
int i;
|
|
if (sis_priv->chipset_rev == SIS96x_900_REV) {
|
sw32(mear, EEREQ);
|
for (wait = 0; wait < 2000; wait++) {
|
if (sr32(mear) & EEGNT) {
|
/* read 16 bits, and index by 16 bits */
|
for (i = 0; i < sis_priv->eeprom_size / 2; i++)
|
ebuf[i] = (u16)read_eeprom(ioaddr, i);
|
ret = 0;
|
break;
|
}
|
udelay(1);
|
}
|
sw32(mear, EEDONE);
|
} else {
|
signature = (u16)read_eeprom(ioaddr, EEPROMSignature);
|
if (signature != 0xffff && signature != 0x0000) {
|
/* read 16 bits, and index by 16 bits */
|
for (i = 0; i < sis_priv->eeprom_size / 2; i++)
|
ebuf[i] = (u16)read_eeprom(ioaddr, i);
|
ret = 0;
|
}
|
}
|
return ret;
|
}
|
|
#define SIS900_EEPROM_MAGIC 0xBABE
|
static int sis900_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data)
|
{
|
struct sis900_private *sis_priv = netdev_priv(dev);
|
u8 *eebuf;
|
int res;
|
|
eebuf = kmalloc(sis_priv->eeprom_size, GFP_KERNEL);
|
if (!eebuf)
|
return -ENOMEM;
|
|
eeprom->magic = SIS900_EEPROM_MAGIC;
|
spin_lock_irq(&sis_priv->lock);
|
res = sis900_read_eeprom(dev, eebuf);
|
spin_unlock_irq(&sis_priv->lock);
|
if (!res)
|
memcpy(data, eebuf + eeprom->offset, eeprom->len);
|
kfree(eebuf);
|
return res;
|
}
|
|
static const struct ethtool_ops sis900_ethtool_ops = {
|
.get_drvinfo = sis900_get_drvinfo,
|
.get_msglevel = sis900_get_msglevel,
|
.set_msglevel = sis900_set_msglevel,
|
.get_link = sis900_get_link,
|
.nway_reset = sis900_nway_reset,
|
.get_wol = sis900_get_wol,
|
.set_wol = sis900_set_wol,
|
.get_link_ksettings = sis900_get_link_ksettings,
|
.set_link_ksettings = sis900_set_link_ksettings,
|
.get_eeprom_len = sis900_get_eeprom_len,
|
.get_eeprom = sis900_get_eeprom,
|
};
|
|
/**
|
* mii_ioctl - process MII i/o control command
|
* @net_dev: the net device to command for
|
* @rq: parameter for command
|
* @cmd: the i/o command
|
*
|
* Process MII command like read/write MII register
|
*/
|
|
static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
struct mii_ioctl_data *data = if_mii(rq);
|
|
switch(cmd) {
|
case SIOCGMIIPHY: /* Get address of MII PHY in use. */
|
data->phy_id = sis_priv->mii->phy_addr;
|
fallthrough;
|
|
case SIOCGMIIREG: /* Read MII PHY register. */
|
data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
|
return 0;
|
|
case SIOCSMIIREG: /* Write MII PHY register. */
|
mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
|
return 0;
|
default:
|
return -EOPNOTSUPP;
|
}
|
}
|
|
/**
|
* sis900_set_config - Set media type by net_device.set_config
|
* @dev: the net device for media type change
|
* @map: ifmap passed by ifconfig
|
*
|
* Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
|
* we support only port changes. All other runtime configuration
|
* changes will be ignored
|
*/
|
|
static int sis900_set_config(struct net_device *dev, struct ifmap *map)
|
{
|
struct sis900_private *sis_priv = netdev_priv(dev);
|
struct mii_phy *mii_phy = sis_priv->mii;
|
|
u16 status;
|
|
if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
|
/* we switch on the ifmap->port field. I couldn't find anything
|
* like a definition or standard for the values of that field.
|
* I think the meaning of those values is device specific. But
|
* since I would like to change the media type via the ifconfig
|
* command I use the definition from linux/netdevice.h
|
* (which seems to be different from the ifport(pcmcia) definition) */
|
switch(map->port){
|
case IF_PORT_UNKNOWN: /* use auto here */
|
dev->if_port = map->port;
|
/* we are going to change the media type, so the Link
|
* will be temporary down and we need to reflect that
|
* here. When the Link comes up again, it will be
|
* sensed by the sis_timer procedure, which also does
|
* all the rest for us */
|
netif_carrier_off(dev);
|
|
/* read current state */
|
status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
|
|
/* enable auto negotiation and reset the negotioation
|
* (I don't really know what the auto negatiotiation
|
* reset really means, but it sounds for me right to
|
* do one here) */
|
mdio_write(dev, mii_phy->phy_addr,
|
MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
|
|
break;
|
|
case IF_PORT_10BASET: /* 10BaseT */
|
dev->if_port = map->port;
|
|
/* we are going to change the media type, so the Link
|
* will be temporary down and we need to reflect that
|
* here. When the Link comes up again, it will be
|
* sensed by the sis_timer procedure, which also does
|
* all the rest for us */
|
netif_carrier_off(dev);
|
|
/* set Speed to 10Mbps */
|
/* read current state */
|
status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
|
|
/* disable auto negotiation and force 10MBit mode*/
|
mdio_write(dev, mii_phy->phy_addr,
|
MII_CONTROL, status & ~(MII_CNTL_SPEED |
|
MII_CNTL_AUTO));
|
break;
|
|
case IF_PORT_100BASET: /* 100BaseT */
|
case IF_PORT_100BASETX: /* 100BaseTx */
|
dev->if_port = map->port;
|
|
/* we are going to change the media type, so the Link
|
* will be temporary down and we need to reflect that
|
* here. When the Link comes up again, it will be
|
* sensed by the sis_timer procedure, which also does
|
* all the rest for us */
|
netif_carrier_off(dev);
|
|
/* set Speed to 100Mbps */
|
/* disable auto negotiation and enable 100MBit Mode */
|
status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
|
mdio_write(dev, mii_phy->phy_addr,
|
MII_CONTROL, (status & ~MII_CNTL_SPEED) |
|
MII_CNTL_SPEED);
|
|
break;
|
|
case IF_PORT_10BASE2: /* 10Base2 */
|
case IF_PORT_AUI: /* AUI */
|
case IF_PORT_100BASEFX: /* 100BaseFx */
|
/* These Modes are not supported (are they?)*/
|
return -EOPNOTSUPP;
|
|
default:
|
return -EINVAL;
|
}
|
}
|
return 0;
|
}
|
|
/**
|
* sis900_mcast_bitnr - compute hashtable index
|
* @addr: multicast address
|
* @revision: revision id of chip
|
*
|
* SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
|
* hash table, which makes this function a little bit different from other drivers
|
* SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
|
* multicast hash table.
|
*/
|
|
static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
|
{
|
|
u32 crc = ether_crc(6, addr);
|
|
/* leave 8 or 7 most siginifant bits */
|
if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
|
return (int)(crc >> 24);
|
else
|
return (int)(crc >> 25);
|
}
|
|
/**
|
* set_rx_mode - Set SiS900 receive mode
|
* @net_dev: the net device to be set
|
*
|
* Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
|
* And set the appropriate multicast filter.
|
* Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
|
*/
|
|
static void set_rx_mode(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
|
int i, table_entries;
|
u32 rx_mode;
|
|
/* 635 Hash Table entries = 256(2^16) */
|
if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
|
(sis_priv->chipset_rev == SIS900B_900_REV))
|
table_entries = 16;
|
else
|
table_entries = 8;
|
|
if (net_dev->flags & IFF_PROMISC) {
|
/* Accept any kinds of packets */
|
rx_mode = RFPromiscuous;
|
for (i = 0; i < table_entries; i++)
|
mc_filter[i] = 0xffff;
|
} else if ((netdev_mc_count(net_dev) > multicast_filter_limit) ||
|
(net_dev->flags & IFF_ALLMULTI)) {
|
/* too many multicast addresses or accept all multicast packet */
|
rx_mode = RFAAB | RFAAM;
|
for (i = 0; i < table_entries; i++)
|
mc_filter[i] = 0xffff;
|
} else {
|
/* Accept Broadcast packet, destination address matchs our
|
* MAC address, use Receive Filter to reject unwanted MCAST
|
* packets */
|
struct netdev_hw_addr *ha;
|
rx_mode = RFAAB;
|
|
netdev_for_each_mc_addr(ha, net_dev) {
|
unsigned int bit_nr;
|
|
bit_nr = sis900_mcast_bitnr(ha->addr,
|
sis_priv->chipset_rev);
|
mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
|
}
|
}
|
|
/* update Multicast Hash Table in Receive Filter */
|
for (i = 0; i < table_entries; i++) {
|
/* why plus 0x04 ??, That makes the correct value for hash table. */
|
sw32(rfcr, (u32)(0x00000004 + i) << RFADDR_shift);
|
sw32(rfdr, mc_filter[i]);
|
}
|
|
sw32(rfcr, RFEN | rx_mode);
|
|
/* sis900 is capable of looping back packets at MAC level for
|
* debugging purpose */
|
if (net_dev->flags & IFF_LOOPBACK) {
|
u32 cr_saved;
|
/* We must disable Tx/Rx before setting loopback mode */
|
cr_saved = sr32(cr);
|
sw32(cr, cr_saved | TxDIS | RxDIS);
|
/* enable loopback */
|
sw32(txcfg, sr32(txcfg) | TxMLB);
|
sw32(rxcfg, sr32(rxcfg) | RxATX);
|
/* restore cr */
|
sw32(cr, cr_saved);
|
}
|
}
|
|
/**
|
* sis900_reset - Reset sis900 MAC
|
* @net_dev: the net device to reset
|
*
|
* reset sis900 MAC and wait until finished
|
* reset through command register
|
* change backoff algorithm for 900B0 & 635 M/B
|
*/
|
|
static void sis900_reset(struct net_device *net_dev)
|
{
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
u32 status = TxRCMP | RxRCMP;
|
int i;
|
|
sw32(ier, 0);
|
sw32(imr, 0);
|
sw32(rfcr, 0);
|
|
sw32(cr, RxRESET | TxRESET | RESET | sr32(cr));
|
|
/* Check that the chip has finished the reset. */
|
for (i = 0; status && (i < 1000); i++)
|
status ^= sr32(isr) & status;
|
|
if (sis_priv->chipset_rev >= SIS635A_900_REV ||
|
sis_priv->chipset_rev == SIS900B_900_REV)
|
sw32(cfg, PESEL | RND_CNT);
|
else
|
sw32(cfg, PESEL);
|
}
|
|
/**
|
* sis900_remove - Remove sis900 device
|
* @pci_dev: the pci device to be removed
|
*
|
* remove and release SiS900 net device
|
*/
|
|
static void sis900_remove(struct pci_dev *pci_dev)
|
{
|
struct net_device *net_dev = pci_get_drvdata(pci_dev);
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
|
unregister_netdev(net_dev);
|
|
while (sis_priv->first_mii) {
|
struct mii_phy *phy = sis_priv->first_mii;
|
|
sis_priv->first_mii = phy->next;
|
kfree(phy);
|
}
|
|
dma_free_coherent(&pci_dev->dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
|
sis_priv->rx_ring_dma);
|
dma_free_coherent(&pci_dev->dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
|
sis_priv->tx_ring_dma);
|
pci_iounmap(pci_dev, sis_priv->ioaddr);
|
free_netdev(net_dev);
|
}
|
|
static int __maybe_unused sis900_suspend(struct device *dev)
|
{
|
struct net_device *net_dev = dev_get_drvdata(dev);
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
|
if(!netif_running(net_dev))
|
return 0;
|
|
netif_stop_queue(net_dev);
|
netif_device_detach(net_dev);
|
|
/* Stop the chip's Tx and Rx Status Machine */
|
sw32(cr, RxDIS | TxDIS | sr32(cr));
|
|
return 0;
|
}
|
|
static int __maybe_unused sis900_resume(struct device *dev)
|
{
|
struct net_device *net_dev = dev_get_drvdata(dev);
|
struct sis900_private *sis_priv = netdev_priv(net_dev);
|
void __iomem *ioaddr = sis_priv->ioaddr;
|
|
if(!netif_running(net_dev))
|
return 0;
|
|
sis900_init_rxfilter(net_dev);
|
|
sis900_init_tx_ring(net_dev);
|
sis900_init_rx_ring(net_dev);
|
|
set_rx_mode(net_dev);
|
|
netif_device_attach(net_dev);
|
netif_start_queue(net_dev);
|
|
/* Workaround for EDB */
|
sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
|
|
/* Enable all known interrupts by setting the interrupt mask. */
|
sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxDESC);
|
sw32(cr, RxENA | sr32(cr));
|
sw32(ier, IE);
|
|
sis900_check_mode(net_dev, sis_priv->mii);
|
|
return 0;
|
}
|
|
static SIMPLE_DEV_PM_OPS(sis900_pm_ops, sis900_suspend, sis900_resume);
|
|
static struct pci_driver sis900_pci_driver = {
|
.name = SIS900_MODULE_NAME,
|
.id_table = sis900_pci_tbl,
|
.probe = sis900_probe,
|
.remove = sis900_remove,
|
.driver.pm = &sis900_pm_ops,
|
};
|
|
static int __init sis900_init_module(void)
|
{
|
/* when a module, this is printed whether or not devices are found in probe */
|
#ifdef MODULE
|
printk(version);
|
#endif
|
|
return pci_register_driver(&sis900_pci_driver);
|
}
|
|
static void __exit sis900_cleanup_module(void)
|
{
|
pci_unregister_driver(&sis900_pci_driver);
|
}
|
|
module_init(sis900_init_module);
|
module_exit(sis900_cleanup_module);
|
