mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c31f28e778
- Eliminate check for irq handler 'dev_id==NULL' where the condition never occurs. - Eliminate needless casts to/from void* Signed-off-by: Jeff Garzik <jeff@garzik.org>
3067 lines
83 KiB
C
3067 lines
83 KiB
C
/* pcnet32.c: An AMD PCnet32 ethernet driver for linux. */
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/*
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* Copyright 1996-1999 Thomas Bogendoerfer
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*
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* Derived from the lance driver written 1993,1994,1995 by Donald Becker.
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*
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* Copyright 1993 United States Government as represented by the
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* Director, National Security Agency.
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*
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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, incorporated herein by reference.
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*
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* This driver is for PCnet32 and PCnetPCI based ethercards
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*/
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/**************************************************************************
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* 23 Oct, 2000.
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* Fixed a few bugs, related to running the controller in 32bit mode.
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*
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* Carsten Langgaard, carstenl@mips.com
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* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
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*
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*************************************************************************/
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#define DRV_NAME "pcnet32"
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#ifdef CONFIG_PCNET32_NAPI
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#define DRV_VERSION "1.33-NAPI"
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#else
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#define DRV_VERSION "1.33"
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#endif
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#define DRV_RELDATE "27.Jun.2006"
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#define PFX DRV_NAME ": "
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static const char *const version =
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DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n";
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.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/delay.h>
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#include <linux/init.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <linux/crc32.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/spinlock.h>
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#include <linux/moduleparam.h>
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#include <linux/bitops.h>
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#include <asm/dma.h>
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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include <asm/irq.h>
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/*
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* PCI device identifiers for "new style" Linux PCI Device Drivers
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*/
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static struct pci_device_id pcnet32_pci_tbl[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME), },
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{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE), },
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/*
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* Adapters that were sold with IBM's RS/6000 or pSeries hardware have
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* the incorrect vendor id.
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*/
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{ PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_AMD_LANCE),
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.class = (PCI_CLASS_NETWORK_ETHERNET << 8), .class_mask = 0xffff00, },
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{ } /* terminate list */
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};
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MODULE_DEVICE_TABLE(pci, pcnet32_pci_tbl);
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static int cards_found;
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/*
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* VLB I/O addresses
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*/
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static unsigned int pcnet32_portlist[] __initdata =
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{ 0x300, 0x320, 0x340, 0x360, 0 };
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static int pcnet32_debug = 0;
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static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */
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static int pcnet32vlb; /* check for VLB cards ? */
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static struct net_device *pcnet32_dev;
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static int max_interrupt_work = 2;
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static int rx_copybreak = 200;
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#define PCNET32_PORT_AUI 0x00
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#define PCNET32_PORT_10BT 0x01
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#define PCNET32_PORT_GPSI 0x02
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#define PCNET32_PORT_MII 0x03
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#define PCNET32_PORT_PORTSEL 0x03
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#define PCNET32_PORT_ASEL 0x04
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#define PCNET32_PORT_100 0x40
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#define PCNET32_PORT_FD 0x80
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#define PCNET32_DMA_MASK 0xffffffff
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#define PCNET32_WATCHDOG_TIMEOUT (jiffies + (2 * HZ))
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#define PCNET32_BLINK_TIMEOUT (jiffies + (HZ/4))
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/*
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* table to translate option values from tulip
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* to internal options
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*/
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static const unsigned char options_mapping[] = {
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PCNET32_PORT_ASEL, /* 0 Auto-select */
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PCNET32_PORT_AUI, /* 1 BNC/AUI */
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PCNET32_PORT_AUI, /* 2 AUI/BNC */
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PCNET32_PORT_ASEL, /* 3 not supported */
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PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */
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PCNET32_PORT_ASEL, /* 5 not supported */
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PCNET32_PORT_ASEL, /* 6 not supported */
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PCNET32_PORT_ASEL, /* 7 not supported */
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PCNET32_PORT_ASEL, /* 8 not supported */
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PCNET32_PORT_MII, /* 9 MII 10baseT */
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PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */
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PCNET32_PORT_MII, /* 11 MII (autosel) */
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PCNET32_PORT_10BT, /* 12 10BaseT */
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PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */
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/* 14 MII 100BaseTx-FD */
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PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD,
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PCNET32_PORT_ASEL /* 15 not supported */
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};
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static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = {
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"Loopback test (offline)"
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};
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#define PCNET32_TEST_LEN (sizeof(pcnet32_gstrings_test) / ETH_GSTRING_LEN)
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#define PCNET32_NUM_REGS 136
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#define MAX_UNITS 8 /* More are supported, limit only on options */
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static int options[MAX_UNITS];
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static int full_duplex[MAX_UNITS];
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static int homepna[MAX_UNITS];
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/*
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* Theory of Operation
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*
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* This driver uses the same software structure as the normal lance
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* driver. So look for a verbose description in lance.c. The differences
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* to the normal lance driver is the use of the 32bit mode of PCnet32
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* and PCnetPCI chips. Because these chips are 32bit chips, there is no
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* 16MB limitation and we don't need bounce buffers.
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*/
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/*
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* Set the number of Tx and Rx buffers, using Log_2(# buffers).
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* Reasonable default values are 4 Tx buffers, and 16 Rx buffers.
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* That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
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*/
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#ifndef PCNET32_LOG_TX_BUFFERS
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#define PCNET32_LOG_TX_BUFFERS 4
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#define PCNET32_LOG_RX_BUFFERS 5
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#define PCNET32_LOG_MAX_TX_BUFFERS 9 /* 2^9 == 512 */
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#define PCNET32_LOG_MAX_RX_BUFFERS 9
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#endif
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#define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS))
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#define TX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_TX_BUFFERS))
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#define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS))
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#define RX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_RX_BUFFERS))
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#define PKT_BUF_SZ 1544
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/* Offsets from base I/O address. */
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#define PCNET32_WIO_RDP 0x10
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#define PCNET32_WIO_RAP 0x12
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#define PCNET32_WIO_RESET 0x14
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#define PCNET32_WIO_BDP 0x16
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#define PCNET32_DWIO_RDP 0x10
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#define PCNET32_DWIO_RAP 0x14
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#define PCNET32_DWIO_RESET 0x18
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#define PCNET32_DWIO_BDP 0x1C
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#define PCNET32_TOTAL_SIZE 0x20
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#define CSR0 0
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#define CSR0_INIT 0x1
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#define CSR0_START 0x2
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#define CSR0_STOP 0x4
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#define CSR0_TXPOLL 0x8
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#define CSR0_INTEN 0x40
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#define CSR0_IDON 0x0100
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#define CSR0_NORMAL (CSR0_START | CSR0_INTEN)
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#define PCNET32_INIT_LOW 1
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#define PCNET32_INIT_HIGH 2
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#define CSR3 3
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#define CSR4 4
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#define CSR5 5
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#define CSR5_SUSPEND 0x0001
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#define CSR15 15
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#define PCNET32_MC_FILTER 8
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#define PCNET32_79C970A 0x2621
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/* The PCNET32 Rx and Tx ring descriptors. */
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struct pcnet32_rx_head {
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u32 base;
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s16 buf_length; /* two`s complement of length */
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s16 status;
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u32 msg_length;
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u32 reserved;
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};
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struct pcnet32_tx_head {
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u32 base;
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s16 length; /* two`s complement of length */
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s16 status;
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u32 misc;
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u32 reserved;
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};
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/* The PCNET32 32-Bit initialization block, described in databook. */
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struct pcnet32_init_block {
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u16 mode;
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u16 tlen_rlen;
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u8 phys_addr[6];
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u16 reserved;
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u32 filter[2];
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/* Receive and transmit ring base, along with extra bits. */
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u32 rx_ring;
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u32 tx_ring;
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};
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/* PCnet32 access functions */
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struct pcnet32_access {
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u16 (*read_csr) (unsigned long, int);
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void (*write_csr) (unsigned long, int, u16);
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u16 (*read_bcr) (unsigned long, int);
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void (*write_bcr) (unsigned long, int, u16);
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u16 (*read_rap) (unsigned long);
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void (*write_rap) (unsigned long, u16);
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void (*reset) (unsigned long);
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};
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/*
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* The first field of pcnet32_private is read by the ethernet device
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* so the structure should be allocated using pci_alloc_consistent().
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*/
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struct pcnet32_private {
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struct pcnet32_init_block init_block;
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/* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */
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struct pcnet32_rx_head *rx_ring;
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struct pcnet32_tx_head *tx_ring;
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dma_addr_t dma_addr;/* DMA address of beginning of this
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object, returned by pci_alloc_consistent */
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struct pci_dev *pci_dev;
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const char *name;
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/* The saved address of a sent-in-place packet/buffer, for skfree(). */
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struct sk_buff **tx_skbuff;
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struct sk_buff **rx_skbuff;
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dma_addr_t *tx_dma_addr;
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dma_addr_t *rx_dma_addr;
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struct pcnet32_access a;
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spinlock_t lock; /* Guard lock */
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unsigned int cur_rx, cur_tx; /* The next free ring entry */
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unsigned int rx_ring_size; /* current rx ring size */
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unsigned int tx_ring_size; /* current tx ring size */
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unsigned int rx_mod_mask; /* rx ring modular mask */
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unsigned int tx_mod_mask; /* tx ring modular mask */
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unsigned short rx_len_bits;
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unsigned short tx_len_bits;
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dma_addr_t rx_ring_dma_addr;
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dma_addr_t tx_ring_dma_addr;
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unsigned int dirty_rx, /* ring entries to be freed. */
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dirty_tx;
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struct net_device_stats stats;
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char tx_full;
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char phycount; /* number of phys found */
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int options;
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unsigned int shared_irq:1, /* shared irq possible */
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dxsuflo:1, /* disable transmit stop on uflo */
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mii:1; /* mii port available */
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struct net_device *next;
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struct mii_if_info mii_if;
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struct timer_list watchdog_timer;
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struct timer_list blink_timer;
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u32 msg_enable; /* debug message level */
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/* each bit indicates an available PHY */
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u32 phymask;
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unsigned short chip_version; /* which variant this is */
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};
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static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *);
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static int pcnet32_probe1(unsigned long, int, struct pci_dev *);
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static int pcnet32_open(struct net_device *);
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static int pcnet32_init_ring(struct net_device *);
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static int pcnet32_start_xmit(struct sk_buff *, struct net_device *);
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static void pcnet32_tx_timeout(struct net_device *dev);
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static irqreturn_t pcnet32_interrupt(int, void *);
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static int pcnet32_close(struct net_device *);
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static struct net_device_stats *pcnet32_get_stats(struct net_device *);
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static void pcnet32_load_multicast(struct net_device *dev);
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static void pcnet32_set_multicast_list(struct net_device *);
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static int pcnet32_ioctl(struct net_device *, struct ifreq *, int);
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static void pcnet32_watchdog(struct net_device *);
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static int mdio_read(struct net_device *dev, int phy_id, int reg_num);
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static void mdio_write(struct net_device *dev, int phy_id, int reg_num,
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int val);
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static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits);
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static void pcnet32_ethtool_test(struct net_device *dev,
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struct ethtool_test *eth_test, u64 * data);
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static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1);
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static int pcnet32_phys_id(struct net_device *dev, u32 data);
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static void pcnet32_led_blink_callback(struct net_device *dev);
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static int pcnet32_get_regs_len(struct net_device *dev);
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static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
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void *ptr);
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static void pcnet32_purge_tx_ring(struct net_device *dev);
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static int pcnet32_alloc_ring(struct net_device *dev, char *name);
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static void pcnet32_free_ring(struct net_device *dev);
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static void pcnet32_check_media(struct net_device *dev, int verbose);
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static u16 pcnet32_wio_read_csr(unsigned long addr, int index)
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{
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outw(index, addr + PCNET32_WIO_RAP);
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return inw(addr + PCNET32_WIO_RDP);
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}
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static void pcnet32_wio_write_csr(unsigned long addr, int index, u16 val)
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{
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outw(index, addr + PCNET32_WIO_RAP);
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outw(val, addr + PCNET32_WIO_RDP);
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}
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static u16 pcnet32_wio_read_bcr(unsigned long addr, int index)
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{
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outw(index, addr + PCNET32_WIO_RAP);
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return inw(addr + PCNET32_WIO_BDP);
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}
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static void pcnet32_wio_write_bcr(unsigned long addr, int index, u16 val)
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{
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outw(index, addr + PCNET32_WIO_RAP);
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outw(val, addr + PCNET32_WIO_BDP);
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}
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static u16 pcnet32_wio_read_rap(unsigned long addr)
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{
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return inw(addr + PCNET32_WIO_RAP);
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}
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static void pcnet32_wio_write_rap(unsigned long addr, u16 val)
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{
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outw(val, addr + PCNET32_WIO_RAP);
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}
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static void pcnet32_wio_reset(unsigned long addr)
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{
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inw(addr + PCNET32_WIO_RESET);
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}
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static int pcnet32_wio_check(unsigned long addr)
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{
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outw(88, addr + PCNET32_WIO_RAP);
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return (inw(addr + PCNET32_WIO_RAP) == 88);
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}
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static struct pcnet32_access pcnet32_wio = {
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.read_csr = pcnet32_wio_read_csr,
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.write_csr = pcnet32_wio_write_csr,
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.read_bcr = pcnet32_wio_read_bcr,
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.write_bcr = pcnet32_wio_write_bcr,
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.read_rap = pcnet32_wio_read_rap,
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.write_rap = pcnet32_wio_write_rap,
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.reset = pcnet32_wio_reset
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};
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static u16 pcnet32_dwio_read_csr(unsigned long addr, int index)
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{
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outl(index, addr + PCNET32_DWIO_RAP);
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return (inl(addr + PCNET32_DWIO_RDP) & 0xffff);
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}
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static void pcnet32_dwio_write_csr(unsigned long addr, int index, u16 val)
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{
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outl(index, addr + PCNET32_DWIO_RAP);
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outl(val, addr + PCNET32_DWIO_RDP);
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}
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static u16 pcnet32_dwio_read_bcr(unsigned long addr, int index)
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{
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outl(index, addr + PCNET32_DWIO_RAP);
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return (inl(addr + PCNET32_DWIO_BDP) & 0xffff);
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}
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static void pcnet32_dwio_write_bcr(unsigned long addr, int index, u16 val)
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{
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outl(index, addr + PCNET32_DWIO_RAP);
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outl(val, addr + PCNET32_DWIO_BDP);
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}
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static u16 pcnet32_dwio_read_rap(unsigned long addr)
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{
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return (inl(addr + PCNET32_DWIO_RAP) & 0xffff);
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}
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static void pcnet32_dwio_write_rap(unsigned long addr, u16 val)
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{
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outl(val, addr + PCNET32_DWIO_RAP);
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}
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static void pcnet32_dwio_reset(unsigned long addr)
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{
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inl(addr + PCNET32_DWIO_RESET);
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}
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static int pcnet32_dwio_check(unsigned long addr)
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{
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outl(88, addr + PCNET32_DWIO_RAP);
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return ((inl(addr + PCNET32_DWIO_RAP) & 0xffff) == 88);
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}
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static struct pcnet32_access pcnet32_dwio = {
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.read_csr = pcnet32_dwio_read_csr,
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.write_csr = pcnet32_dwio_write_csr,
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.read_bcr = pcnet32_dwio_read_bcr,
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.write_bcr = pcnet32_dwio_write_bcr,
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.read_rap = pcnet32_dwio_read_rap,
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.write_rap = pcnet32_dwio_write_rap,
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.reset = pcnet32_dwio_reset
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};
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static void pcnet32_netif_stop(struct net_device *dev)
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{
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dev->trans_start = jiffies;
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netif_poll_disable(dev);
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netif_tx_disable(dev);
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}
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static void pcnet32_netif_start(struct net_device *dev)
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{
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netif_wake_queue(dev);
|
|
netif_poll_enable(dev);
|
|
}
|
|
|
|
/*
|
|
* Allocate space for the new sized tx ring.
|
|
* Free old resources
|
|
* Save new resources.
|
|
* Any failure keeps old resources.
|
|
* Must be called with lp->lock held.
|
|
*/
|
|
static void pcnet32_realloc_tx_ring(struct net_device *dev,
|
|
struct pcnet32_private *lp,
|
|
unsigned int size)
|
|
{
|
|
dma_addr_t new_ring_dma_addr;
|
|
dma_addr_t *new_dma_addr_list;
|
|
struct pcnet32_tx_head *new_tx_ring;
|
|
struct sk_buff **new_skb_list;
|
|
|
|
pcnet32_purge_tx_ring(dev);
|
|
|
|
new_tx_ring = pci_alloc_consistent(lp->pci_dev,
|
|
sizeof(struct pcnet32_tx_head) *
|
|
(1 << size),
|
|
&new_ring_dma_addr);
|
|
if (new_tx_ring == NULL) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR
|
|
"%s: Consistent memory allocation failed.\n",
|
|
dev->name);
|
|
return;
|
|
}
|
|
memset(new_tx_ring, 0, sizeof(struct pcnet32_tx_head) * (1 << size));
|
|
|
|
new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
|
|
GFP_ATOMIC);
|
|
if (!new_dma_addr_list) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR
|
|
"%s: Memory allocation failed.\n", dev->name);
|
|
goto free_new_tx_ring;
|
|
}
|
|
|
|
new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
|
|
GFP_ATOMIC);
|
|
if (!new_skb_list) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR
|
|
"%s: Memory allocation failed.\n", dev->name);
|
|
goto free_new_lists;
|
|
}
|
|
|
|
kfree(lp->tx_skbuff);
|
|
kfree(lp->tx_dma_addr);
|
|
pci_free_consistent(lp->pci_dev,
|
|
sizeof(struct pcnet32_tx_head) *
|
|
lp->tx_ring_size, lp->tx_ring,
|
|
lp->tx_ring_dma_addr);
|
|
|
|
lp->tx_ring_size = (1 << size);
|
|
lp->tx_mod_mask = lp->tx_ring_size - 1;
|
|
lp->tx_len_bits = (size << 12);
|
|
lp->tx_ring = new_tx_ring;
|
|
lp->tx_ring_dma_addr = new_ring_dma_addr;
|
|
lp->tx_dma_addr = new_dma_addr_list;
|
|
lp->tx_skbuff = new_skb_list;
|
|
return;
|
|
|
|
free_new_lists:
|
|
kfree(new_dma_addr_list);
|
|
free_new_tx_ring:
|
|
pci_free_consistent(lp->pci_dev,
|
|
sizeof(struct pcnet32_tx_head) *
|
|
(1 << size),
|
|
new_tx_ring,
|
|
new_ring_dma_addr);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Allocate space for the new sized rx ring.
|
|
* Re-use old receive buffers.
|
|
* alloc extra buffers
|
|
* free unneeded buffers
|
|
* free unneeded buffers
|
|
* Save new resources.
|
|
* Any failure keeps old resources.
|
|
* Must be called with lp->lock held.
|
|
*/
|
|
static void pcnet32_realloc_rx_ring(struct net_device *dev,
|
|
struct pcnet32_private *lp,
|
|
unsigned int size)
|
|
{
|
|
dma_addr_t new_ring_dma_addr;
|
|
dma_addr_t *new_dma_addr_list;
|
|
struct pcnet32_rx_head *new_rx_ring;
|
|
struct sk_buff **new_skb_list;
|
|
int new, overlap;
|
|
|
|
new_rx_ring = pci_alloc_consistent(lp->pci_dev,
|
|
sizeof(struct pcnet32_rx_head) *
|
|
(1 << size),
|
|
&new_ring_dma_addr);
|
|
if (new_rx_ring == NULL) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR
|
|
"%s: Consistent memory allocation failed.\n",
|
|
dev->name);
|
|
return;
|
|
}
|
|
memset(new_rx_ring, 0, sizeof(struct pcnet32_rx_head) * (1 << size));
|
|
|
|
new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
|
|
GFP_ATOMIC);
|
|
if (!new_dma_addr_list) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR
|
|
"%s: Memory allocation failed.\n", dev->name);
|
|
goto free_new_rx_ring;
|
|
}
|
|
|
|
new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
|
|
GFP_ATOMIC);
|
|
if (!new_skb_list) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR
|
|
"%s: Memory allocation failed.\n", dev->name);
|
|
goto free_new_lists;
|
|
}
|
|
|
|
/* first copy the current receive buffers */
|
|
overlap = min(size, lp->rx_ring_size);
|
|
for (new = 0; new < overlap; new++) {
|
|
new_rx_ring[new] = lp->rx_ring[new];
|
|
new_dma_addr_list[new] = lp->rx_dma_addr[new];
|
|
new_skb_list[new] = lp->rx_skbuff[new];
|
|
}
|
|
/* now allocate any new buffers needed */
|
|
for (; new < size; new++ ) {
|
|
struct sk_buff *rx_skbuff;
|
|
new_skb_list[new] = dev_alloc_skb(PKT_BUF_SZ);
|
|
if (!(rx_skbuff = new_skb_list[new])) {
|
|
/* keep the original lists and buffers */
|
|
if (netif_msg_drv(lp))
|
|
printk(KERN_ERR
|
|
"%s: pcnet32_realloc_rx_ring dev_alloc_skb failed.\n",
|
|
dev->name);
|
|
goto free_all_new;
|
|
}
|
|
skb_reserve(rx_skbuff, 2);
|
|
|
|
new_dma_addr_list[new] =
|
|
pci_map_single(lp->pci_dev, rx_skbuff->data,
|
|
PKT_BUF_SZ - 2, PCI_DMA_FROMDEVICE);
|
|
new_rx_ring[new].base = (u32) le32_to_cpu(new_dma_addr_list[new]);
|
|
new_rx_ring[new].buf_length = le16_to_cpu(2 - PKT_BUF_SZ);
|
|
new_rx_ring[new].status = le16_to_cpu(0x8000);
|
|
}
|
|
/* and free any unneeded buffers */
|
|
for (; new < lp->rx_ring_size; new++) {
|
|
if (lp->rx_skbuff[new]) {
|
|
pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[new],
|
|
PKT_BUF_SZ - 2, PCI_DMA_FROMDEVICE);
|
|
dev_kfree_skb(lp->rx_skbuff[new]);
|
|
}
|
|
}
|
|
|
|
kfree(lp->rx_skbuff);
|
|
kfree(lp->rx_dma_addr);
|
|
pci_free_consistent(lp->pci_dev,
|
|
sizeof(struct pcnet32_rx_head) *
|
|
lp->rx_ring_size, lp->rx_ring,
|
|
lp->rx_ring_dma_addr);
|
|
|
|
lp->rx_ring_size = (1 << size);
|
|
lp->rx_mod_mask = lp->rx_ring_size - 1;
|
|
lp->rx_len_bits = (size << 4);
|
|
lp->rx_ring = new_rx_ring;
|
|
lp->rx_ring_dma_addr = new_ring_dma_addr;
|
|
lp->rx_dma_addr = new_dma_addr_list;
|
|
lp->rx_skbuff = new_skb_list;
|
|
return;
|
|
|
|
free_all_new:
|
|
for (; --new >= lp->rx_ring_size; ) {
|
|
if (new_skb_list[new]) {
|
|
pci_unmap_single(lp->pci_dev, new_dma_addr_list[new],
|
|
PKT_BUF_SZ - 2, PCI_DMA_FROMDEVICE);
|
|
dev_kfree_skb(new_skb_list[new]);
|
|
}
|
|
}
|
|
kfree(new_skb_list);
|
|
free_new_lists:
|
|
kfree(new_dma_addr_list);
|
|
free_new_rx_ring:
|
|
pci_free_consistent(lp->pci_dev,
|
|
sizeof(struct pcnet32_rx_head) *
|
|
(1 << size),
|
|
new_rx_ring,
|
|
new_ring_dma_addr);
|
|
return;
|
|
}
|
|
|
|
static void pcnet32_purge_rx_ring(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
int i;
|
|
|
|
/* free all allocated skbuffs */
|
|
for (i = 0; i < lp->rx_ring_size; i++) {
|
|
lp->rx_ring[i].status = 0; /* CPU owns buffer */
|
|
wmb(); /* Make sure adapter sees owner change */
|
|
if (lp->rx_skbuff[i]) {
|
|
pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i],
|
|
PKT_BUF_SZ - 2, PCI_DMA_FROMDEVICE);
|
|
dev_kfree_skb_any(lp->rx_skbuff[i]);
|
|
}
|
|
lp->rx_skbuff[i] = NULL;
|
|
lp->rx_dma_addr[i] = 0;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static void pcnet32_poll_controller(struct net_device *dev)
|
|
{
|
|
disable_irq(dev->irq);
|
|
pcnet32_interrupt(0, dev);
|
|
enable_irq(dev->irq);
|
|
}
|
|
#endif
|
|
|
|
static int pcnet32_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long flags;
|
|
int r = -EOPNOTSUPP;
|
|
|
|
if (lp->mii) {
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
mii_ethtool_gset(&lp->mii_if, cmd);
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
r = 0;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static int pcnet32_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long flags;
|
|
int r = -EOPNOTSUPP;
|
|
|
|
if (lp->mii) {
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
r = mii_ethtool_sset(&lp->mii_if, cmd);
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static void pcnet32_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
|
|
strcpy(info->driver, DRV_NAME);
|
|
strcpy(info->version, DRV_VERSION);
|
|
if (lp->pci_dev)
|
|
strcpy(info->bus_info, pci_name(lp->pci_dev));
|
|
else
|
|
sprintf(info->bus_info, "VLB 0x%lx", dev->base_addr);
|
|
}
|
|
|
|
static u32 pcnet32_get_link(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long flags;
|
|
int r;
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
if (lp->mii) {
|
|
r = mii_link_ok(&lp->mii_if);
|
|
} else if (lp->chip_version >= PCNET32_79C970A) {
|
|
ulong ioaddr = dev->base_addr; /* card base I/O address */
|
|
r = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
|
|
} else { /* can not detect link on really old chips */
|
|
r = 1;
|
|
}
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
return r;
|
|
}
|
|
|
|
static u32 pcnet32_get_msglevel(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
return lp->msg_enable;
|
|
}
|
|
|
|
static void pcnet32_set_msglevel(struct net_device *dev, u32 value)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
lp->msg_enable = value;
|
|
}
|
|
|
|
static int pcnet32_nway_reset(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long flags;
|
|
int r = -EOPNOTSUPP;
|
|
|
|
if (lp->mii) {
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
r = mii_nway_restart(&lp->mii_if);
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static void pcnet32_get_ringparam(struct net_device *dev,
|
|
struct ethtool_ringparam *ering)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
|
|
ering->tx_max_pending = TX_MAX_RING_SIZE;
|
|
ering->tx_pending = lp->tx_ring_size;
|
|
ering->rx_max_pending = RX_MAX_RING_SIZE;
|
|
ering->rx_pending = lp->rx_ring_size;
|
|
}
|
|
|
|
static int pcnet32_set_ringparam(struct net_device *dev,
|
|
struct ethtool_ringparam *ering)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long flags;
|
|
unsigned int size;
|
|
ulong ioaddr = dev->base_addr;
|
|
int i;
|
|
|
|
if (ering->rx_mini_pending || ering->rx_jumbo_pending)
|
|
return -EINVAL;
|
|
|
|
if (netif_running(dev))
|
|
pcnet32_netif_stop(dev);
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
|
|
|
|
size = min(ering->tx_pending, (unsigned int)TX_MAX_RING_SIZE);
|
|
|
|
/* set the minimum ring size to 4, to allow the loopback test to work
|
|
* unchanged.
|
|
*/
|
|
for (i = 2; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) {
|
|
if (size <= (1 << i))
|
|
break;
|
|
}
|
|
if ((1 << i) != lp->tx_ring_size)
|
|
pcnet32_realloc_tx_ring(dev, lp, i);
|
|
|
|
size = min(ering->rx_pending, (unsigned int)RX_MAX_RING_SIZE);
|
|
for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
|
|
if (size <= (1 << i))
|
|
break;
|
|
}
|
|
if ((1 << i) != lp->rx_ring_size)
|
|
pcnet32_realloc_rx_ring(dev, lp, i);
|
|
|
|
dev->weight = lp->rx_ring_size / 2;
|
|
|
|
if (netif_running(dev)) {
|
|
pcnet32_netif_start(dev);
|
|
pcnet32_restart(dev, CSR0_NORMAL);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
if (netif_msg_drv(lp))
|
|
printk(KERN_INFO
|
|
"%s: Ring Param Settings: RX: %d, TX: %d\n", dev->name,
|
|
lp->rx_ring_size, lp->tx_ring_size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pcnet32_get_strings(struct net_device *dev, u32 stringset,
|
|
u8 * data)
|
|
{
|
|
memcpy(data, pcnet32_gstrings_test, sizeof(pcnet32_gstrings_test));
|
|
}
|
|
|
|
static int pcnet32_self_test_count(struct net_device *dev)
|
|
{
|
|
return PCNET32_TEST_LEN;
|
|
}
|
|
|
|
static void pcnet32_ethtool_test(struct net_device *dev,
|
|
struct ethtool_test *test, u64 * data)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
int rc;
|
|
|
|
if (test->flags == ETH_TEST_FL_OFFLINE) {
|
|
rc = pcnet32_loopback_test(dev, data);
|
|
if (rc) {
|
|
if (netif_msg_hw(lp))
|
|
printk(KERN_DEBUG "%s: Loopback test failed.\n",
|
|
dev->name);
|
|
test->flags |= ETH_TEST_FL_FAILED;
|
|
} else if (netif_msg_hw(lp))
|
|
printk(KERN_DEBUG "%s: Loopback test passed.\n",
|
|
dev->name);
|
|
} else if (netif_msg_hw(lp))
|
|
printk(KERN_DEBUG
|
|
"%s: No tests to run (specify 'Offline' on ethtool).",
|
|
dev->name);
|
|
} /* end pcnet32_ethtool_test */
|
|
|
|
static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
struct pcnet32_access *a = &lp->a; /* access to registers */
|
|
ulong ioaddr = dev->base_addr; /* card base I/O address */
|
|
struct sk_buff *skb; /* sk buff */
|
|
int x, i; /* counters */
|
|
int numbuffs = 4; /* number of TX/RX buffers and descs */
|
|
u16 status = 0x8300; /* TX ring status */
|
|
u16 teststatus; /* test of ring status */
|
|
int rc; /* return code */
|
|
int size; /* size of packets */
|
|
unsigned char *packet; /* source packet data */
|
|
static const int data_len = 60; /* length of source packets */
|
|
unsigned long flags;
|
|
unsigned long ticks;
|
|
|
|
rc = 1; /* default to fail */
|
|
|
|
if (netif_running(dev))
|
|
#ifdef CONFIG_PCNET32_NAPI
|
|
pcnet32_netif_stop(dev);
|
|
#else
|
|
pcnet32_close(dev);
|
|
#endif
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
|
|
|
|
numbuffs = min(numbuffs, (int)min(lp->rx_ring_size, lp->tx_ring_size));
|
|
|
|
/* Reset the PCNET32 */
|
|
lp->a.reset(ioaddr);
|
|
lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
|
|
|
|
/* switch pcnet32 to 32bit mode */
|
|
lp->a.write_bcr(ioaddr, 20, 2);
|
|
|
|
/* purge & init rings but don't actually restart */
|
|
pcnet32_restart(dev, 0x0000);
|
|
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
|
|
|
|
/* Initialize Transmit buffers. */
|
|
size = data_len + 15;
|
|
for (x = 0; x < numbuffs; x++) {
|
|
if (!(skb = dev_alloc_skb(size))) {
|
|
if (netif_msg_hw(lp))
|
|
printk(KERN_DEBUG
|
|
"%s: Cannot allocate skb at line: %d!\n",
|
|
dev->name, __LINE__);
|
|
goto clean_up;
|
|
} else {
|
|
packet = skb->data;
|
|
skb_put(skb, size); /* create space for data */
|
|
lp->tx_skbuff[x] = skb;
|
|
lp->tx_ring[x].length = le16_to_cpu(-skb->len);
|
|
lp->tx_ring[x].misc = 0;
|
|
|
|
/* put DA and SA into the skb */
|
|
for (i = 0; i < 6; i++)
|
|
*packet++ = dev->dev_addr[i];
|
|
for (i = 0; i < 6; i++)
|
|
*packet++ = dev->dev_addr[i];
|
|
/* type */
|
|
*packet++ = 0x08;
|
|
*packet++ = 0x06;
|
|
/* packet number */
|
|
*packet++ = x;
|
|
/* fill packet with data */
|
|
for (i = 0; i < data_len; i++)
|
|
*packet++ = i;
|
|
|
|
lp->tx_dma_addr[x] =
|
|
pci_map_single(lp->pci_dev, skb->data, skb->len,
|
|
PCI_DMA_TODEVICE);
|
|
lp->tx_ring[x].base =
|
|
(u32) le32_to_cpu(lp->tx_dma_addr[x]);
|
|
wmb(); /* Make sure owner changes after all others are visible */
|
|
lp->tx_ring[x].status = le16_to_cpu(status);
|
|
}
|
|
}
|
|
|
|
x = a->read_bcr(ioaddr, 32); /* set internal loopback in BCR32 */
|
|
a->write_bcr(ioaddr, 32, x | 0x0002);
|
|
|
|
/* set int loopback in CSR15 */
|
|
x = a->read_csr(ioaddr, CSR15) & 0xfffc;
|
|
lp->a.write_csr(ioaddr, CSR15, x | 0x0044);
|
|
|
|
teststatus = le16_to_cpu(0x8000);
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_START); /* Set STRT bit */
|
|
|
|
/* Check status of descriptors */
|
|
for (x = 0; x < numbuffs; x++) {
|
|
ticks = 0;
|
|
rmb();
|
|
while ((lp->rx_ring[x].status & teststatus) && (ticks < 200)) {
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
msleep(1);
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
rmb();
|
|
ticks++;
|
|
}
|
|
if (ticks == 200) {
|
|
if (netif_msg_hw(lp))
|
|
printk("%s: Desc %d failed to reset!\n",
|
|
dev->name, x);
|
|
break;
|
|
}
|
|
}
|
|
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
|
|
wmb();
|
|
if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) {
|
|
printk(KERN_DEBUG "%s: RX loopback packets:\n", dev->name);
|
|
|
|
for (x = 0; x < numbuffs; x++) {
|
|
printk(KERN_DEBUG "%s: Packet %d:\n", dev->name, x);
|
|
skb = lp->rx_skbuff[x];
|
|
for (i = 0; i < size; i++) {
|
|
printk("%02x ", *(skb->data + i));
|
|
}
|
|
printk("\n");
|
|
}
|
|
}
|
|
|
|
x = 0;
|
|
rc = 0;
|
|
while (x < numbuffs && !rc) {
|
|
skb = lp->rx_skbuff[x];
|
|
packet = lp->tx_skbuff[x]->data;
|
|
for (i = 0; i < size; i++) {
|
|
if (*(skb->data + i) != packet[i]) {
|
|
if (netif_msg_hw(lp))
|
|
printk(KERN_DEBUG
|
|
"%s: Error in compare! %2x - %02x %02x\n",
|
|
dev->name, i, *(skb->data + i),
|
|
packet[i]);
|
|
rc = 1;
|
|
break;
|
|
}
|
|
}
|
|
x++;
|
|
}
|
|
|
|
clean_up:
|
|
*data1 = rc;
|
|
pcnet32_purge_tx_ring(dev);
|
|
|
|
x = a->read_csr(ioaddr, CSR15);
|
|
a->write_csr(ioaddr, CSR15, (x & ~0x0044)); /* reset bits 6 and 2 */
|
|
|
|
x = a->read_bcr(ioaddr, 32); /* reset internal loopback */
|
|
a->write_bcr(ioaddr, 32, (x & ~0x0002));
|
|
|
|
#ifdef CONFIG_PCNET32_NAPI
|
|
if (netif_running(dev)) {
|
|
pcnet32_netif_start(dev);
|
|
pcnet32_restart(dev, CSR0_NORMAL);
|
|
} else {
|
|
pcnet32_purge_rx_ring(dev);
|
|
lp->a.write_bcr(ioaddr, 20, 4); /* return to 16bit mode */
|
|
}
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
#else
|
|
if (netif_running(dev)) {
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
pcnet32_open(dev);
|
|
} else {
|
|
pcnet32_purge_rx_ring(dev);
|
|
lp->a.write_bcr(ioaddr, 20, 4); /* return to 16bit mode */
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
}
|
|
#endif
|
|
|
|
return (rc);
|
|
} /* end pcnet32_loopback_test */
|
|
|
|
static void pcnet32_led_blink_callback(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
struct pcnet32_access *a = &lp->a;
|
|
ulong ioaddr = dev->base_addr;
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
for (i = 4; i < 8; i++) {
|
|
a->write_bcr(ioaddr, i, a->read_bcr(ioaddr, i) ^ 0x4000);
|
|
}
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
mod_timer(&lp->blink_timer, PCNET32_BLINK_TIMEOUT);
|
|
}
|
|
|
|
static int pcnet32_phys_id(struct net_device *dev, u32 data)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
struct pcnet32_access *a = &lp->a;
|
|
ulong ioaddr = dev->base_addr;
|
|
unsigned long flags;
|
|
int i, regs[4];
|
|
|
|
if (!lp->blink_timer.function) {
|
|
init_timer(&lp->blink_timer);
|
|
lp->blink_timer.function = (void *)pcnet32_led_blink_callback;
|
|
lp->blink_timer.data = (unsigned long)dev;
|
|
}
|
|
|
|
/* Save the current value of the bcrs */
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
for (i = 4; i < 8; i++) {
|
|
regs[i - 4] = a->read_bcr(ioaddr, i);
|
|
}
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
mod_timer(&lp->blink_timer, jiffies);
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
|
|
if ((!data) || (data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ)))
|
|
data = (u32) (MAX_SCHEDULE_TIMEOUT / HZ);
|
|
|
|
msleep_interruptible(data * 1000);
|
|
del_timer_sync(&lp->blink_timer);
|
|
|
|
/* Restore the original value of the bcrs */
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
for (i = 4; i < 8; i++) {
|
|
a->write_bcr(ioaddr, i, regs[i - 4]);
|
|
}
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* lp->lock must be held.
|
|
*/
|
|
static int pcnet32_suspend(struct net_device *dev, unsigned long *flags,
|
|
int can_sleep)
|
|
{
|
|
int csr5;
|
|
struct pcnet32_private *lp = dev->priv;
|
|
struct pcnet32_access *a = &lp->a;
|
|
ulong ioaddr = dev->base_addr;
|
|
int ticks;
|
|
|
|
/* really old chips have to be stopped. */
|
|
if (lp->chip_version < PCNET32_79C970A)
|
|
return 0;
|
|
|
|
/* set SUSPEND (SPND) - CSR5 bit 0 */
|
|
csr5 = a->read_csr(ioaddr, CSR5);
|
|
a->write_csr(ioaddr, CSR5, csr5 | CSR5_SUSPEND);
|
|
|
|
/* poll waiting for bit to be set */
|
|
ticks = 0;
|
|
while (!(a->read_csr(ioaddr, CSR5) & CSR5_SUSPEND)) {
|
|
spin_unlock_irqrestore(&lp->lock, *flags);
|
|
if (can_sleep)
|
|
msleep(1);
|
|
else
|
|
mdelay(1);
|
|
spin_lock_irqsave(&lp->lock, *flags);
|
|
ticks++;
|
|
if (ticks > 200) {
|
|
if (netif_msg_hw(lp))
|
|
printk(KERN_DEBUG
|
|
"%s: Error getting into suspend!\n",
|
|
dev->name);
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* process one receive descriptor entry
|
|
*/
|
|
|
|
static void pcnet32_rx_entry(struct net_device *dev,
|
|
struct pcnet32_private *lp,
|
|
struct pcnet32_rx_head *rxp,
|
|
int entry)
|
|
{
|
|
int status = (short)le16_to_cpu(rxp->status) >> 8;
|
|
int rx_in_place = 0;
|
|
struct sk_buff *skb;
|
|
short pkt_len;
|
|
|
|
if (status != 0x03) { /* There was an error. */
|
|
/*
|
|
* There is a tricky error noted by John Murphy,
|
|
* <murf@perftech.com> to Russ Nelson: Even with full-sized
|
|
* buffers it's possible for a jabber packet to use two
|
|
* buffers, with only the last correctly noting the error.
|
|
*/
|
|
if (status & 0x01) /* Only count a general error at the */
|
|
lp->stats.rx_errors++; /* end of a packet. */
|
|
if (status & 0x20)
|
|
lp->stats.rx_frame_errors++;
|
|
if (status & 0x10)
|
|
lp->stats.rx_over_errors++;
|
|
if (status & 0x08)
|
|
lp->stats.rx_crc_errors++;
|
|
if (status & 0x04)
|
|
lp->stats.rx_fifo_errors++;
|
|
return;
|
|
}
|
|
|
|
pkt_len = (le32_to_cpu(rxp->msg_length) & 0xfff) - 4;
|
|
|
|
/* Discard oversize frames. */
|
|
if (unlikely(pkt_len > PKT_BUF_SZ - 2)) {
|
|
if (netif_msg_drv(lp))
|
|
printk(KERN_ERR "%s: Impossible packet size %d!\n",
|
|
dev->name, pkt_len);
|
|
lp->stats.rx_errors++;
|
|
return;
|
|
}
|
|
if (pkt_len < 60) {
|
|
if (netif_msg_rx_err(lp))
|
|
printk(KERN_ERR "%s: Runt packet!\n", dev->name);
|
|
lp->stats.rx_errors++;
|
|
return;
|
|
}
|
|
|
|
if (pkt_len > rx_copybreak) {
|
|
struct sk_buff *newskb;
|
|
|
|
if ((newskb = dev_alloc_skb(PKT_BUF_SZ))) {
|
|
skb_reserve(newskb, 2);
|
|
skb = lp->rx_skbuff[entry];
|
|
pci_unmap_single(lp->pci_dev,
|
|
lp->rx_dma_addr[entry],
|
|
PKT_BUF_SZ - 2,
|
|
PCI_DMA_FROMDEVICE);
|
|
skb_put(skb, pkt_len);
|
|
lp->rx_skbuff[entry] = newskb;
|
|
newskb->dev = dev;
|
|
lp->rx_dma_addr[entry] =
|
|
pci_map_single(lp->pci_dev,
|
|
newskb->data,
|
|
PKT_BUF_SZ - 2,
|
|
PCI_DMA_FROMDEVICE);
|
|
rxp->base = le32_to_cpu(lp->rx_dma_addr[entry]);
|
|
rx_in_place = 1;
|
|
} else
|
|
skb = NULL;
|
|
} else {
|
|
skb = dev_alloc_skb(pkt_len + 2);
|
|
}
|
|
|
|
if (skb == NULL) {
|
|
if (netif_msg_drv(lp))
|
|
printk(KERN_ERR
|
|
"%s: Memory squeeze, dropping packet.\n",
|
|
dev->name);
|
|
lp->stats.rx_dropped++;
|
|
return;
|
|
}
|
|
skb->dev = dev;
|
|
if (!rx_in_place) {
|
|
skb_reserve(skb, 2); /* 16 byte align */
|
|
skb_put(skb, pkt_len); /* Make room */
|
|
pci_dma_sync_single_for_cpu(lp->pci_dev,
|
|
lp->rx_dma_addr[entry],
|
|
PKT_BUF_SZ - 2,
|
|
PCI_DMA_FROMDEVICE);
|
|
eth_copy_and_sum(skb,
|
|
(unsigned char *)(lp->rx_skbuff[entry]->data),
|
|
pkt_len, 0);
|
|
pci_dma_sync_single_for_device(lp->pci_dev,
|
|
lp->rx_dma_addr[entry],
|
|
PKT_BUF_SZ - 2,
|
|
PCI_DMA_FROMDEVICE);
|
|
}
|
|
lp->stats.rx_bytes += skb->len;
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
#ifdef CONFIG_PCNET32_NAPI
|
|
netif_receive_skb(skb);
|
|
#else
|
|
netif_rx(skb);
|
|
#endif
|
|
dev->last_rx = jiffies;
|
|
lp->stats.rx_packets++;
|
|
return;
|
|
}
|
|
|
|
static int pcnet32_rx(struct net_device *dev, int quota)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
int entry = lp->cur_rx & lp->rx_mod_mask;
|
|
struct pcnet32_rx_head *rxp = &lp->rx_ring[entry];
|
|
int npackets = 0;
|
|
|
|
/* If we own the next entry, it's a new packet. Send it up. */
|
|
while (quota > npackets && (short)le16_to_cpu(rxp->status) >= 0) {
|
|
pcnet32_rx_entry(dev, lp, rxp, entry);
|
|
npackets += 1;
|
|
/*
|
|
* The docs say that the buffer length isn't touched, but Andrew
|
|
* Boyd of QNX reports that some revs of the 79C965 clear it.
|
|
*/
|
|
rxp->buf_length = le16_to_cpu(2 - PKT_BUF_SZ);
|
|
wmb(); /* Make sure owner changes after others are visible */
|
|
rxp->status = le16_to_cpu(0x8000);
|
|
entry = (++lp->cur_rx) & lp->rx_mod_mask;
|
|
rxp = &lp->rx_ring[entry];
|
|
}
|
|
|
|
return npackets;
|
|
}
|
|
|
|
static int pcnet32_tx(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned int dirty_tx = lp->dirty_tx;
|
|
int delta;
|
|
int must_restart = 0;
|
|
|
|
while (dirty_tx != lp->cur_tx) {
|
|
int entry = dirty_tx & lp->tx_mod_mask;
|
|
int status = (short)le16_to_cpu(lp->tx_ring[entry].status);
|
|
|
|
if (status < 0)
|
|
break; /* It still hasn't been Txed */
|
|
|
|
lp->tx_ring[entry].base = 0;
|
|
|
|
if (status & 0x4000) {
|
|
/* There was a major error, log it. */
|
|
int err_status = le32_to_cpu(lp->tx_ring[entry].misc);
|
|
lp->stats.tx_errors++;
|
|
if (netif_msg_tx_err(lp))
|
|
printk(KERN_ERR
|
|
"%s: Tx error status=%04x err_status=%08x\n",
|
|
dev->name, status,
|
|
err_status);
|
|
if (err_status & 0x04000000)
|
|
lp->stats.tx_aborted_errors++;
|
|
if (err_status & 0x08000000)
|
|
lp->stats.tx_carrier_errors++;
|
|
if (err_status & 0x10000000)
|
|
lp->stats.tx_window_errors++;
|
|
#ifndef DO_DXSUFLO
|
|
if (err_status & 0x40000000) {
|
|
lp->stats.tx_fifo_errors++;
|
|
/* Ackk! On FIFO errors the Tx unit is turned off! */
|
|
/* Remove this verbosity later! */
|
|
if (netif_msg_tx_err(lp))
|
|
printk(KERN_ERR
|
|
"%s: Tx FIFO error!\n",
|
|
dev->name);
|
|
must_restart = 1;
|
|
}
|
|
#else
|
|
if (err_status & 0x40000000) {
|
|
lp->stats.tx_fifo_errors++;
|
|
if (!lp->dxsuflo) { /* If controller doesn't recover ... */
|
|
/* Ackk! On FIFO errors the Tx unit is turned off! */
|
|
/* Remove this verbosity later! */
|
|
if (netif_msg_tx_err(lp))
|
|
printk(KERN_ERR
|
|
"%s: Tx FIFO error!\n",
|
|
dev->name);
|
|
must_restart = 1;
|
|
}
|
|
}
|
|
#endif
|
|
} else {
|
|
if (status & 0x1800)
|
|
lp->stats.collisions++;
|
|
lp->stats.tx_packets++;
|
|
}
|
|
|
|
/* We must free the original skb */
|
|
if (lp->tx_skbuff[entry]) {
|
|
pci_unmap_single(lp->pci_dev,
|
|
lp->tx_dma_addr[entry],
|
|
lp->tx_skbuff[entry]->
|
|
len, PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_any(lp->tx_skbuff[entry]);
|
|
lp->tx_skbuff[entry] = NULL;
|
|
lp->tx_dma_addr[entry] = 0;
|
|
}
|
|
dirty_tx++;
|
|
}
|
|
|
|
delta = (lp->cur_tx - dirty_tx) & (lp->tx_mod_mask + lp->tx_ring_size);
|
|
if (delta > lp->tx_ring_size) {
|
|
if (netif_msg_drv(lp))
|
|
printk(KERN_ERR
|
|
"%s: out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
|
|
dev->name, dirty_tx, lp->cur_tx,
|
|
lp->tx_full);
|
|
dirty_tx += lp->tx_ring_size;
|
|
delta -= lp->tx_ring_size;
|
|
}
|
|
|
|
if (lp->tx_full &&
|
|
netif_queue_stopped(dev) &&
|
|
delta < lp->tx_ring_size - 2) {
|
|
/* The ring is no longer full, clear tbusy. */
|
|
lp->tx_full = 0;
|
|
netif_wake_queue(dev);
|
|
}
|
|
lp->dirty_tx = dirty_tx;
|
|
|
|
return must_restart;
|
|
}
|
|
|
|
#ifdef CONFIG_PCNET32_NAPI
|
|
static int pcnet32_poll(struct net_device *dev, int *budget)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
int quota = min(dev->quota, *budget);
|
|
unsigned long ioaddr = dev->base_addr;
|
|
unsigned long flags;
|
|
u16 val;
|
|
|
|
quota = pcnet32_rx(dev, quota);
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
if (pcnet32_tx(dev)) {
|
|
/* reset the chip to clear the error condition, then restart */
|
|
lp->a.reset(ioaddr);
|
|
lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
|
|
pcnet32_restart(dev, CSR0_START);
|
|
netif_wake_queue(dev);
|
|
}
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
*budget -= quota;
|
|
dev->quota -= quota;
|
|
|
|
if (dev->quota == 0) {
|
|
return 1;
|
|
}
|
|
|
|
netif_rx_complete(dev);
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
|
|
/* clear interrupt masks */
|
|
val = lp->a.read_csr(ioaddr, CSR3);
|
|
val &= 0x00ff;
|
|
lp->a.write_csr(ioaddr, CSR3, val);
|
|
|
|
/* Set interrupt enable. */
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN);
|
|
mmiowb();
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#define PCNET32_REGS_PER_PHY 32
|
|
#define PCNET32_MAX_PHYS 32
|
|
static int pcnet32_get_regs_len(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
int j = lp->phycount * PCNET32_REGS_PER_PHY;
|
|
|
|
return ((PCNET32_NUM_REGS + j) * sizeof(u16));
|
|
}
|
|
|
|
static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
|
|
void *ptr)
|
|
{
|
|
int i, csr0;
|
|
u16 *buff = ptr;
|
|
struct pcnet32_private *lp = dev->priv;
|
|
struct pcnet32_access *a = &lp->a;
|
|
ulong ioaddr = dev->base_addr;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
|
|
csr0 = a->read_csr(ioaddr, CSR0);
|
|
if (!(csr0 & CSR0_STOP)) /* If not stopped */
|
|
pcnet32_suspend(dev, &flags, 1);
|
|
|
|
/* read address PROM */
|
|
for (i = 0; i < 16; i += 2)
|
|
*buff++ = inw(ioaddr + i);
|
|
|
|
/* read control and status registers */
|
|
for (i = 0; i < 90; i++) {
|
|
*buff++ = a->read_csr(ioaddr, i);
|
|
}
|
|
|
|
*buff++ = a->read_csr(ioaddr, 112);
|
|
*buff++ = a->read_csr(ioaddr, 114);
|
|
|
|
/* read bus configuration registers */
|
|
for (i = 0; i < 30; i++) {
|
|
*buff++ = a->read_bcr(ioaddr, i);
|
|
}
|
|
*buff++ = 0; /* skip bcr30 so as not to hang 79C976 */
|
|
for (i = 31; i < 36; i++) {
|
|
*buff++ = a->read_bcr(ioaddr, i);
|
|
}
|
|
|
|
/* read mii phy registers */
|
|
if (lp->mii) {
|
|
int j;
|
|
for (j = 0; j < PCNET32_MAX_PHYS; j++) {
|
|
if (lp->phymask & (1 << j)) {
|
|
for (i = 0; i < PCNET32_REGS_PER_PHY; i++) {
|
|
lp->a.write_bcr(ioaddr, 33,
|
|
(j << 5) | i);
|
|
*buff++ = lp->a.read_bcr(ioaddr, 34);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!(csr0 & CSR0_STOP)) { /* If not stopped */
|
|
int csr5;
|
|
|
|
/* clear SUSPEND (SPND) - CSR5 bit 0 */
|
|
csr5 = a->read_csr(ioaddr, CSR5);
|
|
a->write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
|
|
}
|
|
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
}
|
|
|
|
static const struct ethtool_ops pcnet32_ethtool_ops = {
|
|
.get_settings = pcnet32_get_settings,
|
|
.set_settings = pcnet32_set_settings,
|
|
.get_drvinfo = pcnet32_get_drvinfo,
|
|
.get_msglevel = pcnet32_get_msglevel,
|
|
.set_msglevel = pcnet32_set_msglevel,
|
|
.nway_reset = pcnet32_nway_reset,
|
|
.get_link = pcnet32_get_link,
|
|
.get_ringparam = pcnet32_get_ringparam,
|
|
.set_ringparam = pcnet32_set_ringparam,
|
|
.get_tx_csum = ethtool_op_get_tx_csum,
|
|
.get_sg = ethtool_op_get_sg,
|
|
.get_tso = ethtool_op_get_tso,
|
|
.get_strings = pcnet32_get_strings,
|
|
.self_test_count = pcnet32_self_test_count,
|
|
.self_test = pcnet32_ethtool_test,
|
|
.phys_id = pcnet32_phys_id,
|
|
.get_regs_len = pcnet32_get_regs_len,
|
|
.get_regs = pcnet32_get_regs,
|
|
.get_perm_addr = ethtool_op_get_perm_addr,
|
|
};
|
|
|
|
/* only probes for non-PCI devices, the rest are handled by
|
|
* pci_register_driver via pcnet32_probe_pci */
|
|
|
|
static void __devinit pcnet32_probe_vlbus(unsigned int *pcnet32_portlist)
|
|
{
|
|
unsigned int *port, ioaddr;
|
|
|
|
/* search for PCnet32 VLB cards at known addresses */
|
|
for (port = pcnet32_portlist; (ioaddr = *port); port++) {
|
|
if (request_region
|
|
(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_vlbus")) {
|
|
/* check if there is really a pcnet chip on that ioaddr */
|
|
if ((inb(ioaddr + 14) == 0x57)
|
|
&& (inb(ioaddr + 15) == 0x57)) {
|
|
pcnet32_probe1(ioaddr, 0, NULL);
|
|
} else {
|
|
release_region(ioaddr, PCNET32_TOTAL_SIZE);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int __devinit
|
|
pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
unsigned long ioaddr;
|
|
int err;
|
|
|
|
err = pci_enable_device(pdev);
|
|
if (err < 0) {
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_ERR PFX
|
|
"failed to enable device -- err=%d\n", err);
|
|
return err;
|
|
}
|
|
pci_set_master(pdev);
|
|
|
|
ioaddr = pci_resource_start(pdev, 0);
|
|
if (!ioaddr) {
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_ERR PFX
|
|
"card has no PCI IO resources, aborting\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!pci_dma_supported(pdev, PCNET32_DMA_MASK)) {
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_ERR PFX
|
|
"architecture does not support 32bit PCI busmaster DMA\n");
|
|
return -ENODEV;
|
|
}
|
|
if (request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci") ==
|
|
NULL) {
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_ERR PFX
|
|
"io address range already allocated\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
err = pcnet32_probe1(ioaddr, 1, pdev);
|
|
if (err < 0) {
|
|
pci_disable_device(pdev);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/* pcnet32_probe1
|
|
* Called from both pcnet32_probe_vlbus and pcnet_probe_pci.
|
|
* pdev will be NULL when called from pcnet32_probe_vlbus.
|
|
*/
|
|
static int __devinit
|
|
pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
|
|
{
|
|
struct pcnet32_private *lp;
|
|
dma_addr_t lp_dma_addr;
|
|
int i, media;
|
|
int fdx, mii, fset, dxsuflo;
|
|
int chip_version;
|
|
char *chipname;
|
|
struct net_device *dev;
|
|
struct pcnet32_access *a = NULL;
|
|
u8 promaddr[6];
|
|
int ret = -ENODEV;
|
|
|
|
/* reset the chip */
|
|
pcnet32_wio_reset(ioaddr);
|
|
|
|
/* NOTE: 16-bit check is first, otherwise some older PCnet chips fail */
|
|
if (pcnet32_wio_read_csr(ioaddr, 0) == 4 && pcnet32_wio_check(ioaddr)) {
|
|
a = &pcnet32_wio;
|
|
} else {
|
|
pcnet32_dwio_reset(ioaddr);
|
|
if (pcnet32_dwio_read_csr(ioaddr, 0) == 4
|
|
&& pcnet32_dwio_check(ioaddr)) {
|
|
a = &pcnet32_dwio;
|
|
} else
|
|
goto err_release_region;
|
|
}
|
|
|
|
chip_version =
|
|
a->read_csr(ioaddr, 88) | (a->read_csr(ioaddr, 89) << 16);
|
|
if ((pcnet32_debug & NETIF_MSG_PROBE) && (pcnet32_debug & NETIF_MSG_HW))
|
|
printk(KERN_INFO " PCnet chip version is %#x.\n",
|
|
chip_version);
|
|
if ((chip_version & 0xfff) != 0x003) {
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_INFO PFX "Unsupported chip version.\n");
|
|
goto err_release_region;
|
|
}
|
|
|
|
/* initialize variables */
|
|
fdx = mii = fset = dxsuflo = 0;
|
|
chip_version = (chip_version >> 12) & 0xffff;
|
|
|
|
switch (chip_version) {
|
|
case 0x2420:
|
|
chipname = "PCnet/PCI 79C970"; /* PCI */
|
|
break;
|
|
case 0x2430:
|
|
if (shared)
|
|
chipname = "PCnet/PCI 79C970"; /* 970 gives the wrong chip id back */
|
|
else
|
|
chipname = "PCnet/32 79C965"; /* 486/VL bus */
|
|
break;
|
|
case 0x2621:
|
|
chipname = "PCnet/PCI II 79C970A"; /* PCI */
|
|
fdx = 1;
|
|
break;
|
|
case 0x2623:
|
|
chipname = "PCnet/FAST 79C971"; /* PCI */
|
|
fdx = 1;
|
|
mii = 1;
|
|
fset = 1;
|
|
break;
|
|
case 0x2624:
|
|
chipname = "PCnet/FAST+ 79C972"; /* PCI */
|
|
fdx = 1;
|
|
mii = 1;
|
|
fset = 1;
|
|
break;
|
|
case 0x2625:
|
|
chipname = "PCnet/FAST III 79C973"; /* PCI */
|
|
fdx = 1;
|
|
mii = 1;
|
|
break;
|
|
case 0x2626:
|
|
chipname = "PCnet/Home 79C978"; /* PCI */
|
|
fdx = 1;
|
|
/*
|
|
* This is based on specs published at www.amd.com. This section
|
|
* assumes that a card with a 79C978 wants to go into standard
|
|
* ethernet mode. The 79C978 can also go into 1Mb HomePNA mode,
|
|
* and the module option homepna=1 can select this instead.
|
|
*/
|
|
media = a->read_bcr(ioaddr, 49);
|
|
media &= ~3; /* default to 10Mb ethernet */
|
|
if (cards_found < MAX_UNITS && homepna[cards_found])
|
|
media |= 1; /* switch to home wiring mode */
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_DEBUG PFX "media set to %sMbit mode.\n",
|
|
(media & 1) ? "1" : "10");
|
|
a->write_bcr(ioaddr, 49, media);
|
|
break;
|
|
case 0x2627:
|
|
chipname = "PCnet/FAST III 79C975"; /* PCI */
|
|
fdx = 1;
|
|
mii = 1;
|
|
break;
|
|
case 0x2628:
|
|
chipname = "PCnet/PRO 79C976";
|
|
fdx = 1;
|
|
mii = 1;
|
|
break;
|
|
default:
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_INFO PFX
|
|
"PCnet version %#x, no PCnet32 chip.\n",
|
|
chip_version);
|
|
goto err_release_region;
|
|
}
|
|
|
|
/*
|
|
* On selected chips turn on the BCR18:NOUFLO bit. This stops transmit
|
|
* starting until the packet is loaded. Strike one for reliability, lose
|
|
* one for latency - although on PCI this isnt a big loss. Older chips
|
|
* have FIFO's smaller than a packet, so you can't do this.
|
|
* Turn on BCR18:BurstRdEn and BCR18:BurstWrEn.
|
|
*/
|
|
|
|
if (fset) {
|
|
a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0860));
|
|
a->write_csr(ioaddr, 80,
|
|
(a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00);
|
|
dxsuflo = 1;
|
|
}
|
|
|
|
dev = alloc_etherdev(0);
|
|
if (!dev) {
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_ERR PFX "Memory allocation failed.\n");
|
|
ret = -ENOMEM;
|
|
goto err_release_region;
|
|
}
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_INFO PFX "%s at %#3lx,", chipname, ioaddr);
|
|
|
|
/* In most chips, after a chip reset, the ethernet address is read from the
|
|
* station address PROM at the base address and programmed into the
|
|
* "Physical Address Registers" CSR12-14.
|
|
* As a precautionary measure, we read the PROM values and complain if
|
|
* they disagree with the CSRs. If they miscompare, and the PROM addr
|
|
* is valid, then the PROM addr is used.
|
|
*/
|
|
for (i = 0; i < 3; i++) {
|
|
unsigned int val;
|
|
val = a->read_csr(ioaddr, i + 12) & 0x0ffff;
|
|
/* There may be endianness issues here. */
|
|
dev->dev_addr[2 * i] = val & 0x0ff;
|
|
dev->dev_addr[2 * i + 1] = (val >> 8) & 0x0ff;
|
|
}
|
|
|
|
/* read PROM address and compare with CSR address */
|
|
for (i = 0; i < 6; i++)
|
|
promaddr[i] = inb(ioaddr + i);
|
|
|
|
if (memcmp(promaddr, dev->dev_addr, 6)
|
|
|| !is_valid_ether_addr(dev->dev_addr)) {
|
|
if (is_valid_ether_addr(promaddr)) {
|
|
if (pcnet32_debug & NETIF_MSG_PROBE) {
|
|
printk(" warning: CSR address invalid,\n");
|
|
printk(KERN_INFO
|
|
" using instead PROM address of");
|
|
}
|
|
memcpy(dev->dev_addr, promaddr, 6);
|
|
}
|
|
}
|
|
memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
|
|
|
|
/* if the ethernet address is not valid, force to 00:00:00:00:00:00 */
|
|
if (!is_valid_ether_addr(dev->perm_addr))
|
|
memset(dev->dev_addr, 0, sizeof(dev->dev_addr));
|
|
|
|
if (pcnet32_debug & NETIF_MSG_PROBE) {
|
|
for (i = 0; i < 6; i++)
|
|
printk(" %2.2x", dev->dev_addr[i]);
|
|
|
|
/* Version 0x2623 and 0x2624 */
|
|
if (((chip_version + 1) & 0xfffe) == 0x2624) {
|
|
i = a->read_csr(ioaddr, 80) & 0x0C00; /* Check tx_start_pt */
|
|
printk("\n" KERN_INFO " tx_start_pt(0x%04x):", i);
|
|
switch (i >> 10) {
|
|
case 0:
|
|
printk(" 20 bytes,");
|
|
break;
|
|
case 1:
|
|
printk(" 64 bytes,");
|
|
break;
|
|
case 2:
|
|
printk(" 128 bytes,");
|
|
break;
|
|
case 3:
|
|
printk("~220 bytes,");
|
|
break;
|
|
}
|
|
i = a->read_bcr(ioaddr, 18); /* Check Burst/Bus control */
|
|
printk(" BCR18(%x):", i & 0xffff);
|
|
if (i & (1 << 5))
|
|
printk("BurstWrEn ");
|
|
if (i & (1 << 6))
|
|
printk("BurstRdEn ");
|
|
if (i & (1 << 7))
|
|
printk("DWordIO ");
|
|
if (i & (1 << 11))
|
|
printk("NoUFlow ");
|
|
i = a->read_bcr(ioaddr, 25);
|
|
printk("\n" KERN_INFO " SRAMSIZE=0x%04x,", i << 8);
|
|
i = a->read_bcr(ioaddr, 26);
|
|
printk(" SRAM_BND=0x%04x,", i << 8);
|
|
i = a->read_bcr(ioaddr, 27);
|
|
if (i & (1 << 14))
|
|
printk("LowLatRx");
|
|
}
|
|
}
|
|
|
|
dev->base_addr = ioaddr;
|
|
/* pci_alloc_consistent returns page-aligned memory, so we do not have to check the alignment */
|
|
if ((lp =
|
|
pci_alloc_consistent(pdev, sizeof(*lp), &lp_dma_addr)) == NULL) {
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_ERR PFX
|
|
"Consistent memory allocation failed.\n");
|
|
ret = -ENOMEM;
|
|
goto err_free_netdev;
|
|
}
|
|
|
|
memset(lp, 0, sizeof(*lp));
|
|
lp->dma_addr = lp_dma_addr;
|
|
lp->pci_dev = pdev;
|
|
|
|
spin_lock_init(&lp->lock);
|
|
|
|
SET_MODULE_OWNER(dev);
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
dev->priv = lp;
|
|
lp->name = chipname;
|
|
lp->shared_irq = shared;
|
|
lp->tx_ring_size = TX_RING_SIZE; /* default tx ring size */
|
|
lp->rx_ring_size = RX_RING_SIZE; /* default rx ring size */
|
|
lp->tx_mod_mask = lp->tx_ring_size - 1;
|
|
lp->rx_mod_mask = lp->rx_ring_size - 1;
|
|
lp->tx_len_bits = (PCNET32_LOG_TX_BUFFERS << 12);
|
|
lp->rx_len_bits = (PCNET32_LOG_RX_BUFFERS << 4);
|
|
lp->mii_if.full_duplex = fdx;
|
|
lp->mii_if.phy_id_mask = 0x1f;
|
|
lp->mii_if.reg_num_mask = 0x1f;
|
|
lp->dxsuflo = dxsuflo;
|
|
lp->mii = mii;
|
|
lp->chip_version = chip_version;
|
|
lp->msg_enable = pcnet32_debug;
|
|
if ((cards_found >= MAX_UNITS)
|
|
|| (options[cards_found] > sizeof(options_mapping)))
|
|
lp->options = PCNET32_PORT_ASEL;
|
|
else
|
|
lp->options = options_mapping[options[cards_found]];
|
|
lp->mii_if.dev = dev;
|
|
lp->mii_if.mdio_read = mdio_read;
|
|
lp->mii_if.mdio_write = mdio_write;
|
|
|
|
if (fdx && !(lp->options & PCNET32_PORT_ASEL) &&
|
|
((cards_found >= MAX_UNITS) || full_duplex[cards_found]))
|
|
lp->options |= PCNET32_PORT_FD;
|
|
|
|
if (!a) {
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_ERR PFX "No access methods\n");
|
|
ret = -ENODEV;
|
|
goto err_free_consistent;
|
|
}
|
|
lp->a = *a;
|
|
|
|
/* prior to register_netdev, dev->name is not yet correct */
|
|
if (pcnet32_alloc_ring(dev, pci_name(lp->pci_dev))) {
|
|
ret = -ENOMEM;
|
|
goto err_free_ring;
|
|
}
|
|
/* detect special T1/E1 WAN card by checking for MAC address */
|
|
if (dev->dev_addr[0] == 0x00 && dev->dev_addr[1] == 0xe0
|
|
&& dev->dev_addr[2] == 0x75)
|
|
lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI;
|
|
|
|
lp->init_block.mode = le16_to_cpu(0x0003); /* Disable Rx and Tx. */
|
|
lp->init_block.tlen_rlen =
|
|
le16_to_cpu(lp->tx_len_bits | lp->rx_len_bits);
|
|
for (i = 0; i < 6; i++)
|
|
lp->init_block.phys_addr[i] = dev->dev_addr[i];
|
|
lp->init_block.filter[0] = 0x00000000;
|
|
lp->init_block.filter[1] = 0x00000000;
|
|
lp->init_block.rx_ring = (u32) le32_to_cpu(lp->rx_ring_dma_addr);
|
|
lp->init_block.tx_ring = (u32) le32_to_cpu(lp->tx_ring_dma_addr);
|
|
|
|
/* switch pcnet32 to 32bit mode */
|
|
a->write_bcr(ioaddr, 20, 2);
|
|
|
|
a->write_csr(ioaddr, 1, (lp->dma_addr + offsetof(struct pcnet32_private,
|
|
init_block)) & 0xffff);
|
|
a->write_csr(ioaddr, 2, (lp->dma_addr + offsetof(struct pcnet32_private,
|
|
init_block)) >> 16);
|
|
|
|
if (pdev) { /* use the IRQ provided by PCI */
|
|
dev->irq = pdev->irq;
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(" assigned IRQ %d.\n", dev->irq);
|
|
} else {
|
|
unsigned long irq_mask = probe_irq_on();
|
|
|
|
/*
|
|
* To auto-IRQ we enable the initialization-done and DMA error
|
|
* interrupts. For ISA boards we get a DMA error, but VLB and PCI
|
|
* boards will work.
|
|
*/
|
|
/* Trigger an initialization just for the interrupt. */
|
|
a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_INIT);
|
|
mdelay(1);
|
|
|
|
dev->irq = probe_irq_off(irq_mask);
|
|
if (!dev->irq) {
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(", failed to detect IRQ line.\n");
|
|
ret = -ENODEV;
|
|
goto err_free_ring;
|
|
}
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(", probed IRQ %d.\n", dev->irq);
|
|
}
|
|
|
|
/* Set the mii phy_id so that we can query the link state */
|
|
if (lp->mii) {
|
|
/* lp->phycount and lp->phymask are set to 0 by memset above */
|
|
|
|
lp->mii_if.phy_id = ((lp->a.read_bcr(ioaddr, 33)) >> 5) & 0x1f;
|
|
/* scan for PHYs */
|
|
for (i = 0; i < PCNET32_MAX_PHYS; i++) {
|
|
unsigned short id1, id2;
|
|
|
|
id1 = mdio_read(dev, i, MII_PHYSID1);
|
|
if (id1 == 0xffff)
|
|
continue;
|
|
id2 = mdio_read(dev, i, MII_PHYSID2);
|
|
if (id2 == 0xffff)
|
|
continue;
|
|
if (i == 31 && ((chip_version + 1) & 0xfffe) == 0x2624)
|
|
continue; /* 79C971 & 79C972 have phantom phy at id 31 */
|
|
lp->phycount++;
|
|
lp->phymask |= (1 << i);
|
|
lp->mii_if.phy_id = i;
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_INFO PFX
|
|
"Found PHY %04x:%04x at address %d.\n",
|
|
id1, id2, i);
|
|
}
|
|
lp->a.write_bcr(ioaddr, 33, (lp->mii_if.phy_id) << 5);
|
|
if (lp->phycount > 1) {
|
|
lp->options |= PCNET32_PORT_MII;
|
|
}
|
|
}
|
|
|
|
init_timer(&lp->watchdog_timer);
|
|
lp->watchdog_timer.data = (unsigned long)dev;
|
|
lp->watchdog_timer.function = (void *)&pcnet32_watchdog;
|
|
|
|
/* The PCNET32-specific entries in the device structure. */
|
|
dev->open = &pcnet32_open;
|
|
dev->hard_start_xmit = &pcnet32_start_xmit;
|
|
dev->stop = &pcnet32_close;
|
|
dev->get_stats = &pcnet32_get_stats;
|
|
dev->set_multicast_list = &pcnet32_set_multicast_list;
|
|
dev->do_ioctl = &pcnet32_ioctl;
|
|
dev->ethtool_ops = &pcnet32_ethtool_ops;
|
|
dev->tx_timeout = pcnet32_tx_timeout;
|
|
dev->watchdog_timeo = (5 * HZ);
|
|
dev->weight = lp->rx_ring_size / 2;
|
|
#ifdef CONFIG_PCNET32_NAPI
|
|
dev->poll = pcnet32_poll;
|
|
#endif
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
dev->poll_controller = pcnet32_poll_controller;
|
|
#endif
|
|
|
|
/* Fill in the generic fields of the device structure. */
|
|
if (register_netdev(dev))
|
|
goto err_free_ring;
|
|
|
|
if (pdev) {
|
|
pci_set_drvdata(pdev, dev);
|
|
} else {
|
|
lp->next = pcnet32_dev;
|
|
pcnet32_dev = dev;
|
|
}
|
|
|
|
if (pcnet32_debug & NETIF_MSG_PROBE)
|
|
printk(KERN_INFO "%s: registered as %s\n", dev->name, lp->name);
|
|
cards_found++;
|
|
|
|
/* enable LED writes */
|
|
a->write_bcr(ioaddr, 2, a->read_bcr(ioaddr, 2) | 0x1000);
|
|
|
|
return 0;
|
|
|
|
err_free_ring:
|
|
pcnet32_free_ring(dev);
|
|
err_free_consistent:
|
|
pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
|
|
err_free_netdev:
|
|
free_netdev(dev);
|
|
err_release_region:
|
|
release_region(ioaddr, PCNET32_TOTAL_SIZE);
|
|
return ret;
|
|
}
|
|
|
|
/* if any allocation fails, caller must also call pcnet32_free_ring */
|
|
static int pcnet32_alloc_ring(struct net_device *dev, char *name)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
|
|
lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
|
|
sizeof(struct pcnet32_tx_head) *
|
|
lp->tx_ring_size,
|
|
&lp->tx_ring_dma_addr);
|
|
if (lp->tx_ring == NULL) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR PFX
|
|
"%s: Consistent memory allocation failed.\n",
|
|
name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
|
|
sizeof(struct pcnet32_rx_head) *
|
|
lp->rx_ring_size,
|
|
&lp->rx_ring_dma_addr);
|
|
if (lp->rx_ring == NULL) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR PFX
|
|
"%s: Consistent memory allocation failed.\n",
|
|
name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
lp->tx_dma_addr = kcalloc(lp->tx_ring_size, sizeof(dma_addr_t),
|
|
GFP_ATOMIC);
|
|
if (!lp->tx_dma_addr) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR PFX
|
|
"%s: Memory allocation failed.\n", name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
lp->rx_dma_addr = kcalloc(lp->rx_ring_size, sizeof(dma_addr_t),
|
|
GFP_ATOMIC);
|
|
if (!lp->rx_dma_addr) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR PFX
|
|
"%s: Memory allocation failed.\n", name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
lp->tx_skbuff = kcalloc(lp->tx_ring_size, sizeof(struct sk_buff *),
|
|
GFP_ATOMIC);
|
|
if (!lp->tx_skbuff) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR PFX
|
|
"%s: Memory allocation failed.\n", name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
lp->rx_skbuff = kcalloc(lp->rx_ring_size, sizeof(struct sk_buff *),
|
|
GFP_ATOMIC);
|
|
if (!lp->rx_skbuff) {
|
|
if (netif_msg_drv(lp))
|
|
printk("\n" KERN_ERR PFX
|
|
"%s: Memory allocation failed.\n", name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pcnet32_free_ring(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
|
|
kfree(lp->tx_skbuff);
|
|
lp->tx_skbuff = NULL;
|
|
|
|
kfree(lp->rx_skbuff);
|
|
lp->rx_skbuff = NULL;
|
|
|
|
kfree(lp->tx_dma_addr);
|
|
lp->tx_dma_addr = NULL;
|
|
|
|
kfree(lp->rx_dma_addr);
|
|
lp->rx_dma_addr = NULL;
|
|
|
|
if (lp->tx_ring) {
|
|
pci_free_consistent(lp->pci_dev,
|
|
sizeof(struct pcnet32_tx_head) *
|
|
lp->tx_ring_size, lp->tx_ring,
|
|
lp->tx_ring_dma_addr);
|
|
lp->tx_ring = NULL;
|
|
}
|
|
|
|
if (lp->rx_ring) {
|
|
pci_free_consistent(lp->pci_dev,
|
|
sizeof(struct pcnet32_rx_head) *
|
|
lp->rx_ring_size, lp->rx_ring,
|
|
lp->rx_ring_dma_addr);
|
|
lp->rx_ring = NULL;
|
|
}
|
|
}
|
|
|
|
static int pcnet32_open(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long ioaddr = dev->base_addr;
|
|
u16 val;
|
|
int i;
|
|
int rc;
|
|
unsigned long flags;
|
|
|
|
if (request_irq(dev->irq, &pcnet32_interrupt,
|
|
lp->shared_irq ? IRQF_SHARED : 0, dev->name,
|
|
(void *)dev)) {
|
|
return -EAGAIN;
|
|
}
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
/* Check for a valid station address */
|
|
if (!is_valid_ether_addr(dev->dev_addr)) {
|
|
rc = -EINVAL;
|
|
goto err_free_irq;
|
|
}
|
|
|
|
/* Reset the PCNET32 */
|
|
lp->a.reset(ioaddr);
|
|
|
|
/* switch pcnet32 to 32bit mode */
|
|
lp->a.write_bcr(ioaddr, 20, 2);
|
|
|
|
if (netif_msg_ifup(lp))
|
|
printk(KERN_DEBUG
|
|
"%s: pcnet32_open() irq %d tx/rx rings %#x/%#x init %#x.\n",
|
|
dev->name, dev->irq, (u32) (lp->tx_ring_dma_addr),
|
|
(u32) (lp->rx_ring_dma_addr),
|
|
(u32) (lp->dma_addr +
|
|
offsetof(struct pcnet32_private, init_block)));
|
|
|
|
/* set/reset autoselect bit */
|
|
val = lp->a.read_bcr(ioaddr, 2) & ~2;
|
|
if (lp->options & PCNET32_PORT_ASEL)
|
|
val |= 2;
|
|
lp->a.write_bcr(ioaddr, 2, val);
|
|
|
|
/* handle full duplex setting */
|
|
if (lp->mii_if.full_duplex) {
|
|
val = lp->a.read_bcr(ioaddr, 9) & ~3;
|
|
if (lp->options & PCNET32_PORT_FD) {
|
|
val |= 1;
|
|
if (lp->options == (PCNET32_PORT_FD | PCNET32_PORT_AUI))
|
|
val |= 2;
|
|
} else if (lp->options & PCNET32_PORT_ASEL) {
|
|
/* workaround of xSeries250, turn on for 79C975 only */
|
|
if (lp->chip_version == 0x2627)
|
|
val |= 3;
|
|
}
|
|
lp->a.write_bcr(ioaddr, 9, val);
|
|
}
|
|
|
|
/* set/reset GPSI bit in test register */
|
|
val = lp->a.read_csr(ioaddr, 124) & ~0x10;
|
|
if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI)
|
|
val |= 0x10;
|
|
lp->a.write_csr(ioaddr, 124, val);
|
|
|
|
/* Allied Telesyn AT 2700/2701 FX are 100Mbit only and do not negotiate */
|
|
if (lp->pci_dev->subsystem_vendor == PCI_VENDOR_ID_AT &&
|
|
(lp->pci_dev->subsystem_device == PCI_SUBDEVICE_ID_AT_2700FX ||
|
|
lp->pci_dev->subsystem_device == PCI_SUBDEVICE_ID_AT_2701FX)) {
|
|
if (lp->options & PCNET32_PORT_ASEL) {
|
|
lp->options = PCNET32_PORT_FD | PCNET32_PORT_100;
|
|
if (netif_msg_link(lp))
|
|
printk(KERN_DEBUG
|
|
"%s: Setting 100Mb-Full Duplex.\n",
|
|
dev->name);
|
|
}
|
|
}
|
|
if (lp->phycount < 2) {
|
|
/*
|
|
* 24 Jun 2004 according AMD, in order to change the PHY,
|
|
* DANAS (or DISPM for 79C976) must be set; then select the speed,
|
|
* duplex, and/or enable auto negotiation, and clear DANAS
|
|
*/
|
|
if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) {
|
|
lp->a.write_bcr(ioaddr, 32,
|
|
lp->a.read_bcr(ioaddr, 32) | 0x0080);
|
|
/* disable Auto Negotiation, set 10Mpbs, HD */
|
|
val = lp->a.read_bcr(ioaddr, 32) & ~0xb8;
|
|
if (lp->options & PCNET32_PORT_FD)
|
|
val |= 0x10;
|
|
if (lp->options & PCNET32_PORT_100)
|
|
val |= 0x08;
|
|
lp->a.write_bcr(ioaddr, 32, val);
|
|
} else {
|
|
if (lp->options & PCNET32_PORT_ASEL) {
|
|
lp->a.write_bcr(ioaddr, 32,
|
|
lp->a.read_bcr(ioaddr,
|
|
32) | 0x0080);
|
|
/* enable auto negotiate, setup, disable fd */
|
|
val = lp->a.read_bcr(ioaddr, 32) & ~0x98;
|
|
val |= 0x20;
|
|
lp->a.write_bcr(ioaddr, 32, val);
|
|
}
|
|
}
|
|
} else {
|
|
int first_phy = -1;
|
|
u16 bmcr;
|
|
u32 bcr9;
|
|
struct ethtool_cmd ecmd;
|
|
|
|
/*
|
|
* There is really no good other way to handle multiple PHYs
|
|
* other than turning off all automatics
|
|
*/
|
|
val = lp->a.read_bcr(ioaddr, 2);
|
|
lp->a.write_bcr(ioaddr, 2, val & ~2);
|
|
val = lp->a.read_bcr(ioaddr, 32);
|
|
lp->a.write_bcr(ioaddr, 32, val & ~(1 << 7)); /* stop MII manager */
|
|
|
|
if (!(lp->options & PCNET32_PORT_ASEL)) {
|
|
/* setup ecmd */
|
|
ecmd.port = PORT_MII;
|
|
ecmd.transceiver = XCVR_INTERNAL;
|
|
ecmd.autoneg = AUTONEG_DISABLE;
|
|
ecmd.speed =
|
|
lp->
|
|
options & PCNET32_PORT_100 ? SPEED_100 : SPEED_10;
|
|
bcr9 = lp->a.read_bcr(ioaddr, 9);
|
|
|
|
if (lp->options & PCNET32_PORT_FD) {
|
|
ecmd.duplex = DUPLEX_FULL;
|
|
bcr9 |= (1 << 0);
|
|
} else {
|
|
ecmd.duplex = DUPLEX_HALF;
|
|
bcr9 |= ~(1 << 0);
|
|
}
|
|
lp->a.write_bcr(ioaddr, 9, bcr9);
|
|
}
|
|
|
|
for (i = 0; i < PCNET32_MAX_PHYS; i++) {
|
|
if (lp->phymask & (1 << i)) {
|
|
/* isolate all but the first PHY */
|
|
bmcr = mdio_read(dev, i, MII_BMCR);
|
|
if (first_phy == -1) {
|
|
first_phy = i;
|
|
mdio_write(dev, i, MII_BMCR,
|
|
bmcr & ~BMCR_ISOLATE);
|
|
} else {
|
|
mdio_write(dev, i, MII_BMCR,
|
|
bmcr | BMCR_ISOLATE);
|
|
}
|
|
/* use mii_ethtool_sset to setup PHY */
|
|
lp->mii_if.phy_id = i;
|
|
ecmd.phy_address = i;
|
|
if (lp->options & PCNET32_PORT_ASEL) {
|
|
mii_ethtool_gset(&lp->mii_if, &ecmd);
|
|
ecmd.autoneg = AUTONEG_ENABLE;
|
|
}
|
|
mii_ethtool_sset(&lp->mii_if, &ecmd);
|
|
}
|
|
}
|
|
lp->mii_if.phy_id = first_phy;
|
|
if (netif_msg_link(lp))
|
|
printk(KERN_INFO "%s: Using PHY number %d.\n",
|
|
dev->name, first_phy);
|
|
}
|
|
|
|
#ifdef DO_DXSUFLO
|
|
if (lp->dxsuflo) { /* Disable transmit stop on underflow */
|
|
val = lp->a.read_csr(ioaddr, CSR3);
|
|
val |= 0x40;
|
|
lp->a.write_csr(ioaddr, CSR3, val);
|
|
}
|
|
#endif
|
|
|
|
lp->init_block.mode =
|
|
le16_to_cpu((lp->options & PCNET32_PORT_PORTSEL) << 7);
|
|
pcnet32_load_multicast(dev);
|
|
|
|
if (pcnet32_init_ring(dev)) {
|
|
rc = -ENOMEM;
|
|
goto err_free_ring;
|
|
}
|
|
|
|
/* Re-initialize the PCNET32, and start it when done. */
|
|
lp->a.write_csr(ioaddr, 1, (lp->dma_addr +
|
|
offsetof(struct pcnet32_private,
|
|
init_block)) & 0xffff);
|
|
lp->a.write_csr(ioaddr, 2,
|
|
(lp->dma_addr +
|
|
offsetof(struct pcnet32_private, init_block)) >> 16);
|
|
|
|
lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
|
|
|
|
netif_start_queue(dev);
|
|
|
|
if (lp->chip_version >= PCNET32_79C970A) {
|
|
/* Print the link status and start the watchdog */
|
|
pcnet32_check_media(dev, 1);
|
|
mod_timer(&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
|
|
}
|
|
|
|
i = 0;
|
|
while (i++ < 100)
|
|
if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
|
|
break;
|
|
/*
|
|
* We used to clear the InitDone bit, 0x0100, here but Mark Stockton
|
|
* reports that doing so triggers a bug in the '974.
|
|
*/
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_NORMAL);
|
|
|
|
if (netif_msg_ifup(lp))
|
|
printk(KERN_DEBUG
|
|
"%s: pcnet32 open after %d ticks, init block %#x csr0 %4.4x.\n",
|
|
dev->name, i,
|
|
(u32) (lp->dma_addr +
|
|
offsetof(struct pcnet32_private, init_block)),
|
|
lp->a.read_csr(ioaddr, CSR0));
|
|
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
return 0; /* Always succeed */
|
|
|
|
err_free_ring:
|
|
/* free any allocated skbuffs */
|
|
pcnet32_purge_rx_ring(dev);
|
|
|
|
/*
|
|
* Switch back to 16bit mode to avoid problems with dumb
|
|
* DOS packet driver after a warm reboot
|
|
*/
|
|
lp->a.write_bcr(ioaddr, 20, 4);
|
|
|
|
err_free_irq:
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
free_irq(dev->irq, dev);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* The LANCE has been halted for one reason or another (busmaster memory
|
|
* arbitration error, Tx FIFO underflow, driver stopped it to reconfigure,
|
|
* etc.). Modern LANCE variants always reload their ring-buffer
|
|
* configuration when restarted, so we must reinitialize our ring
|
|
* context before restarting. As part of this reinitialization,
|
|
* find all packets still on the Tx ring and pretend that they had been
|
|
* sent (in effect, drop the packets on the floor) - the higher-level
|
|
* protocols will time out and retransmit. It'd be better to shuffle
|
|
* these skbs to a temp list and then actually re-Tx them after
|
|
* restarting the chip, but I'm too lazy to do so right now. dplatt@3do.com
|
|
*/
|
|
|
|
static void pcnet32_purge_tx_ring(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
int i;
|
|
|
|
for (i = 0; i < lp->tx_ring_size; i++) {
|
|
lp->tx_ring[i].status = 0; /* CPU owns buffer */
|
|
wmb(); /* Make sure adapter sees owner change */
|
|
if (lp->tx_skbuff[i]) {
|
|
pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[i],
|
|
lp->tx_skbuff[i]->len,
|
|
PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_any(lp->tx_skbuff[i]);
|
|
}
|
|
lp->tx_skbuff[i] = NULL;
|
|
lp->tx_dma_addr[i] = 0;
|
|
}
|
|
}
|
|
|
|
/* Initialize the PCNET32 Rx and Tx rings. */
|
|
static int pcnet32_init_ring(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
int i;
|
|
|
|
lp->tx_full = 0;
|
|
lp->cur_rx = lp->cur_tx = 0;
|
|
lp->dirty_rx = lp->dirty_tx = 0;
|
|
|
|
for (i = 0; i < lp->rx_ring_size; i++) {
|
|
struct sk_buff *rx_skbuff = lp->rx_skbuff[i];
|
|
if (rx_skbuff == NULL) {
|
|
if (!
|
|
(rx_skbuff = lp->rx_skbuff[i] =
|
|
dev_alloc_skb(PKT_BUF_SZ))) {
|
|
/* there is not much, we can do at this point */
|
|
if (netif_msg_drv(lp))
|
|
printk(KERN_ERR
|
|
"%s: pcnet32_init_ring dev_alloc_skb failed.\n",
|
|
dev->name);
|
|
return -1;
|
|
}
|
|
skb_reserve(rx_skbuff, 2);
|
|
}
|
|
|
|
rmb();
|
|
if (lp->rx_dma_addr[i] == 0)
|
|
lp->rx_dma_addr[i] =
|
|
pci_map_single(lp->pci_dev, rx_skbuff->data,
|
|
PKT_BUF_SZ - 2, PCI_DMA_FROMDEVICE);
|
|
lp->rx_ring[i].base = (u32) le32_to_cpu(lp->rx_dma_addr[i]);
|
|
lp->rx_ring[i].buf_length = le16_to_cpu(2 - PKT_BUF_SZ);
|
|
wmb(); /* Make sure owner changes after all others are visible */
|
|
lp->rx_ring[i].status = le16_to_cpu(0x8000);
|
|
}
|
|
/* The Tx buffer address is filled in as needed, but we do need to clear
|
|
* the upper ownership bit. */
|
|
for (i = 0; i < lp->tx_ring_size; i++) {
|
|
lp->tx_ring[i].status = 0; /* CPU owns buffer */
|
|
wmb(); /* Make sure adapter sees owner change */
|
|
lp->tx_ring[i].base = 0;
|
|
lp->tx_dma_addr[i] = 0;
|
|
}
|
|
|
|
lp->init_block.tlen_rlen =
|
|
le16_to_cpu(lp->tx_len_bits | lp->rx_len_bits);
|
|
for (i = 0; i < 6; i++)
|
|
lp->init_block.phys_addr[i] = dev->dev_addr[i];
|
|
lp->init_block.rx_ring = (u32) le32_to_cpu(lp->rx_ring_dma_addr);
|
|
lp->init_block.tx_ring = (u32) le32_to_cpu(lp->tx_ring_dma_addr);
|
|
wmb(); /* Make sure all changes are visible */
|
|
return 0;
|
|
}
|
|
|
|
/* the pcnet32 has been issued a stop or reset. Wait for the stop bit
|
|
* then flush the pending transmit operations, re-initialize the ring,
|
|
* and tell the chip to initialize.
|
|
*/
|
|
static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long ioaddr = dev->base_addr;
|
|
int i;
|
|
|
|
/* wait for stop */
|
|
for (i = 0; i < 100; i++)
|
|
if (lp->a.read_csr(ioaddr, CSR0) & CSR0_STOP)
|
|
break;
|
|
|
|
if (i >= 100 && netif_msg_drv(lp))
|
|
printk(KERN_ERR
|
|
"%s: pcnet32_restart timed out waiting for stop.\n",
|
|
dev->name);
|
|
|
|
pcnet32_purge_tx_ring(dev);
|
|
if (pcnet32_init_ring(dev))
|
|
return;
|
|
|
|
/* ReInit Ring */
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
|
|
i = 0;
|
|
while (i++ < 1000)
|
|
if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
|
|
break;
|
|
|
|
lp->a.write_csr(ioaddr, CSR0, csr0_bits);
|
|
}
|
|
|
|
static void pcnet32_tx_timeout(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long ioaddr = dev->base_addr, flags;
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
/* Transmitter timeout, serious problems. */
|
|
if (pcnet32_debug & NETIF_MSG_DRV)
|
|
printk(KERN_ERR
|
|
"%s: transmit timed out, status %4.4x, resetting.\n",
|
|
dev->name, lp->a.read_csr(ioaddr, CSR0));
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
|
|
lp->stats.tx_errors++;
|
|
if (netif_msg_tx_err(lp)) {
|
|
int i;
|
|
printk(KERN_DEBUG
|
|
" Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.",
|
|
lp->dirty_tx, lp->cur_tx, lp->tx_full ? " (full)" : "",
|
|
lp->cur_rx);
|
|
for (i = 0; i < lp->rx_ring_size; i++)
|
|
printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
|
|
le32_to_cpu(lp->rx_ring[i].base),
|
|
(-le16_to_cpu(lp->rx_ring[i].buf_length)) &
|
|
0xffff, le32_to_cpu(lp->rx_ring[i].msg_length),
|
|
le16_to_cpu(lp->rx_ring[i].status));
|
|
for (i = 0; i < lp->tx_ring_size; i++)
|
|
printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
|
|
le32_to_cpu(lp->tx_ring[i].base),
|
|
(-le16_to_cpu(lp->tx_ring[i].length)) & 0xffff,
|
|
le32_to_cpu(lp->tx_ring[i].misc),
|
|
le16_to_cpu(lp->tx_ring[i].status));
|
|
printk("\n");
|
|
}
|
|
pcnet32_restart(dev, CSR0_NORMAL);
|
|
|
|
dev->trans_start = jiffies;
|
|
netif_wake_queue(dev);
|
|
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
}
|
|
|
|
static int pcnet32_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long ioaddr = dev->base_addr;
|
|
u16 status;
|
|
int entry;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
|
|
if (netif_msg_tx_queued(lp)) {
|
|
printk(KERN_DEBUG
|
|
"%s: pcnet32_start_xmit() called, csr0 %4.4x.\n",
|
|
dev->name, lp->a.read_csr(ioaddr, CSR0));
|
|
}
|
|
|
|
/* Default status -- will not enable Successful-TxDone
|
|
* interrupt when that option is available to us.
|
|
*/
|
|
status = 0x8300;
|
|
|
|
/* Fill in a Tx ring entry */
|
|
|
|
/* Mask to ring buffer boundary. */
|
|
entry = lp->cur_tx & lp->tx_mod_mask;
|
|
|
|
/* Caution: the write order is important here, set the status
|
|
* with the "ownership" bits last. */
|
|
|
|
lp->tx_ring[entry].length = le16_to_cpu(-skb->len);
|
|
|
|
lp->tx_ring[entry].misc = 0x00000000;
|
|
|
|
lp->tx_skbuff[entry] = skb;
|
|
lp->tx_dma_addr[entry] =
|
|
pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
|
|
lp->tx_ring[entry].base = (u32) le32_to_cpu(lp->tx_dma_addr[entry]);
|
|
wmb(); /* Make sure owner changes after all others are visible */
|
|
lp->tx_ring[entry].status = le16_to_cpu(status);
|
|
|
|
lp->cur_tx++;
|
|
lp->stats.tx_bytes += skb->len;
|
|
|
|
/* Trigger an immediate send poll. */
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
|
|
|
|
dev->trans_start = jiffies;
|
|
|
|
if (lp->tx_ring[(entry + 1) & lp->tx_mod_mask].base != 0) {
|
|
lp->tx_full = 1;
|
|
netif_stop_queue(dev);
|
|
}
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/* The PCNET32 interrupt handler. */
|
|
static irqreturn_t
|
|
pcnet32_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = dev_id;
|
|
struct pcnet32_private *lp;
|
|
unsigned long ioaddr;
|
|
u16 csr0;
|
|
int boguscnt = max_interrupt_work;
|
|
|
|
ioaddr = dev->base_addr;
|
|
lp = dev->priv;
|
|
|
|
spin_lock(&lp->lock);
|
|
|
|
csr0 = lp->a.read_csr(ioaddr, CSR0);
|
|
while ((csr0 & 0x8f00) && --boguscnt >= 0) {
|
|
if (csr0 == 0xffff) {
|
|
break; /* PCMCIA remove happened */
|
|
}
|
|
/* Acknowledge all of the current interrupt sources ASAP. */
|
|
lp->a.write_csr(ioaddr, CSR0, csr0 & ~0x004f);
|
|
|
|
if (netif_msg_intr(lp))
|
|
printk(KERN_DEBUG
|
|
"%s: interrupt csr0=%#2.2x new csr=%#2.2x.\n",
|
|
dev->name, csr0, lp->a.read_csr(ioaddr, CSR0));
|
|
|
|
/* Log misc errors. */
|
|
if (csr0 & 0x4000)
|
|
lp->stats.tx_errors++; /* Tx babble. */
|
|
if (csr0 & 0x1000) {
|
|
/*
|
|
* This happens when our receive ring is full. This
|
|
* shouldn't be a problem as we will see normal rx
|
|
* interrupts for the frames in the receive ring. But
|
|
* there are some PCI chipsets (I can reproduce this
|
|
* on SP3G with Intel saturn chipset) which have
|
|
* sometimes problems and will fill up the receive
|
|
* ring with error descriptors. In this situation we
|
|
* don't get a rx interrupt, but a missed frame
|
|
* interrupt sooner or later.
|
|
*/
|
|
lp->stats.rx_errors++; /* Missed a Rx frame. */
|
|
}
|
|
if (csr0 & 0x0800) {
|
|
if (netif_msg_drv(lp))
|
|
printk(KERN_ERR
|
|
"%s: Bus master arbitration failure, status %4.4x.\n",
|
|
dev->name, csr0);
|
|
/* unlike for the lance, there is no restart needed */
|
|
}
|
|
#ifdef CONFIG_PCNET32_NAPI
|
|
if (netif_rx_schedule_prep(dev)) {
|
|
u16 val;
|
|
/* set interrupt masks */
|
|
val = lp->a.read_csr(ioaddr, CSR3);
|
|
val |= 0x5f00;
|
|
lp->a.write_csr(ioaddr, CSR3, val);
|
|
mmiowb();
|
|
__netif_rx_schedule(dev);
|
|
break;
|
|
}
|
|
#else
|
|
pcnet32_rx(dev, dev->weight);
|
|
if (pcnet32_tx(dev)) {
|
|
/* reset the chip to clear the error condition, then restart */
|
|
lp->a.reset(ioaddr);
|
|
lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
|
|
pcnet32_restart(dev, CSR0_START);
|
|
netif_wake_queue(dev);
|
|
}
|
|
#endif
|
|
csr0 = lp->a.read_csr(ioaddr, CSR0);
|
|
}
|
|
|
|
#ifndef CONFIG_PCNET32_NAPI
|
|
/* Set interrupt enable. */
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN);
|
|
#endif
|
|
|
|
if (netif_msg_intr(lp))
|
|
printk(KERN_DEBUG "%s: exiting interrupt, csr0=%#4.4x.\n",
|
|
dev->name, lp->a.read_csr(ioaddr, CSR0));
|
|
|
|
spin_unlock(&lp->lock);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int pcnet32_close(struct net_device *dev)
|
|
{
|
|
unsigned long ioaddr = dev->base_addr;
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long flags;
|
|
|
|
del_timer_sync(&lp->watchdog_timer);
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
|
|
lp->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
|
|
|
|
if (netif_msg_ifdown(lp))
|
|
printk(KERN_DEBUG
|
|
"%s: Shutting down ethercard, status was %2.2x.\n",
|
|
dev->name, lp->a.read_csr(ioaddr, CSR0));
|
|
|
|
/* We stop the PCNET32 here -- it occasionally polls memory if we don't. */
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
|
|
|
|
/*
|
|
* Switch back to 16bit mode to avoid problems with dumb
|
|
* DOS packet driver after a warm reboot
|
|
*/
|
|
lp->a.write_bcr(ioaddr, 20, 4);
|
|
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
free_irq(dev->irq, dev);
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
|
|
pcnet32_purge_rx_ring(dev);
|
|
pcnet32_purge_tx_ring(dev);
|
|
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct net_device_stats *pcnet32_get_stats(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long ioaddr = dev->base_addr;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
lp->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
return &lp->stats;
|
|
}
|
|
|
|
/* taken from the sunlance driver, which it took from the depca driver */
|
|
static void pcnet32_load_multicast(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
volatile struct pcnet32_init_block *ib = &lp->init_block;
|
|
volatile u16 *mcast_table = (u16 *) & ib->filter;
|
|
struct dev_mc_list *dmi = dev->mc_list;
|
|
unsigned long ioaddr = dev->base_addr;
|
|
char *addrs;
|
|
int i;
|
|
u32 crc;
|
|
|
|
/* set all multicast bits */
|
|
if (dev->flags & IFF_ALLMULTI) {
|
|
ib->filter[0] = 0xffffffff;
|
|
ib->filter[1] = 0xffffffff;
|
|
lp->a.write_csr(ioaddr, PCNET32_MC_FILTER, 0xffff);
|
|
lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+1, 0xffff);
|
|
lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+2, 0xffff);
|
|
lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+3, 0xffff);
|
|
return;
|
|
}
|
|
/* clear the multicast filter */
|
|
ib->filter[0] = 0;
|
|
ib->filter[1] = 0;
|
|
|
|
/* Add addresses */
|
|
for (i = 0; i < dev->mc_count; i++) {
|
|
addrs = dmi->dmi_addr;
|
|
dmi = dmi->next;
|
|
|
|
/* multicast address? */
|
|
if (!(*addrs & 1))
|
|
continue;
|
|
|
|
crc = ether_crc_le(6, addrs);
|
|
crc = crc >> 26;
|
|
mcast_table[crc >> 4] =
|
|
le16_to_cpu(le16_to_cpu(mcast_table[crc >> 4]) |
|
|
(1 << (crc & 0xf)));
|
|
}
|
|
for (i = 0; i < 4; i++)
|
|
lp->a.write_csr(ioaddr, PCNET32_MC_FILTER + i,
|
|
le16_to_cpu(mcast_table[i]));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Set or clear the multicast filter for this adaptor.
|
|
*/
|
|
static void pcnet32_set_multicast_list(struct net_device *dev)
|
|
{
|
|
unsigned long ioaddr = dev->base_addr, flags;
|
|
struct pcnet32_private *lp = dev->priv;
|
|
int csr15, suspended;
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
suspended = pcnet32_suspend(dev, &flags, 0);
|
|
csr15 = lp->a.read_csr(ioaddr, CSR15);
|
|
if (dev->flags & IFF_PROMISC) {
|
|
/* Log any net taps. */
|
|
if (netif_msg_hw(lp))
|
|
printk(KERN_INFO "%s: Promiscuous mode enabled.\n",
|
|
dev->name);
|
|
lp->init_block.mode =
|
|
le16_to_cpu(0x8000 | (lp->options & PCNET32_PORT_PORTSEL) <<
|
|
7);
|
|
lp->a.write_csr(ioaddr, CSR15, csr15 | 0x8000);
|
|
} else {
|
|
lp->init_block.mode =
|
|
le16_to_cpu((lp->options & PCNET32_PORT_PORTSEL) << 7);
|
|
lp->a.write_csr(ioaddr, CSR15, csr15 & 0x7fff);
|
|
pcnet32_load_multicast(dev);
|
|
}
|
|
|
|
if (suspended) {
|
|
int csr5;
|
|
/* clear SUSPEND (SPND) - CSR5 bit 0 */
|
|
csr5 = lp->a.read_csr(ioaddr, CSR5);
|
|
lp->a.write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
|
|
} else {
|
|
lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
|
|
pcnet32_restart(dev, CSR0_NORMAL);
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
}
|
|
|
|
/* This routine assumes that the lp->lock is held */
|
|
static int mdio_read(struct net_device *dev, int phy_id, int reg_num)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long ioaddr = dev->base_addr;
|
|
u16 val_out;
|
|
|
|
if (!lp->mii)
|
|
return 0;
|
|
|
|
lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
|
|
val_out = lp->a.read_bcr(ioaddr, 34);
|
|
|
|
return val_out;
|
|
}
|
|
|
|
/* This routine assumes that the lp->lock is held */
|
|
static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long ioaddr = dev->base_addr;
|
|
|
|
if (!lp->mii)
|
|
return;
|
|
|
|
lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
|
|
lp->a.write_bcr(ioaddr, 34, val);
|
|
}
|
|
|
|
static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
int rc;
|
|
unsigned long flags;
|
|
|
|
/* SIOC[GS]MIIxxx ioctls */
|
|
if (lp->mii) {
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
rc = generic_mii_ioctl(&lp->mii_if, if_mii(rq), cmd, NULL);
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
} else {
|
|
rc = -EOPNOTSUPP;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int pcnet32_check_otherphy(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
struct mii_if_info mii = lp->mii_if;
|
|
u16 bmcr;
|
|
int i;
|
|
|
|
for (i = 0; i < PCNET32_MAX_PHYS; i++) {
|
|
if (i == lp->mii_if.phy_id)
|
|
continue; /* skip active phy */
|
|
if (lp->phymask & (1 << i)) {
|
|
mii.phy_id = i;
|
|
if (mii_link_ok(&mii)) {
|
|
/* found PHY with active link */
|
|
if (netif_msg_link(lp))
|
|
printk(KERN_INFO
|
|
"%s: Using PHY number %d.\n",
|
|
dev->name, i);
|
|
|
|
/* isolate inactive phy */
|
|
bmcr =
|
|
mdio_read(dev, lp->mii_if.phy_id, MII_BMCR);
|
|
mdio_write(dev, lp->mii_if.phy_id, MII_BMCR,
|
|
bmcr | BMCR_ISOLATE);
|
|
|
|
/* de-isolate new phy */
|
|
bmcr = mdio_read(dev, i, MII_BMCR);
|
|
mdio_write(dev, i, MII_BMCR,
|
|
bmcr & ~BMCR_ISOLATE);
|
|
|
|
/* set new phy address */
|
|
lp->mii_if.phy_id = i;
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Show the status of the media. Similar to mii_check_media however it
|
|
* correctly shows the link speed for all (tested) pcnet32 variants.
|
|
* Devices with no mii just report link state without speed.
|
|
*
|
|
* Caller is assumed to hold and release the lp->lock.
|
|
*/
|
|
|
|
static void pcnet32_check_media(struct net_device *dev, int verbose)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
int curr_link;
|
|
int prev_link = netif_carrier_ok(dev) ? 1 : 0;
|
|
u32 bcr9;
|
|
|
|
if (lp->mii) {
|
|
curr_link = mii_link_ok(&lp->mii_if);
|
|
} else {
|
|
ulong ioaddr = dev->base_addr; /* card base I/O address */
|
|
curr_link = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
|
|
}
|
|
if (!curr_link) {
|
|
if (prev_link || verbose) {
|
|
netif_carrier_off(dev);
|
|
if (netif_msg_link(lp))
|
|
printk(KERN_INFO "%s: link down\n", dev->name);
|
|
}
|
|
if (lp->phycount > 1) {
|
|
curr_link = pcnet32_check_otherphy(dev);
|
|
prev_link = 0;
|
|
}
|
|
} else if (verbose || !prev_link) {
|
|
netif_carrier_on(dev);
|
|
if (lp->mii) {
|
|
if (netif_msg_link(lp)) {
|
|
struct ethtool_cmd ecmd;
|
|
mii_ethtool_gset(&lp->mii_if, &ecmd);
|
|
printk(KERN_INFO
|
|
"%s: link up, %sMbps, %s-duplex\n",
|
|
dev->name,
|
|
(ecmd.speed == SPEED_100) ? "100" : "10",
|
|
(ecmd.duplex ==
|
|
DUPLEX_FULL) ? "full" : "half");
|
|
}
|
|
bcr9 = lp->a.read_bcr(dev->base_addr, 9);
|
|
if ((bcr9 & (1 << 0)) != lp->mii_if.full_duplex) {
|
|
if (lp->mii_if.full_duplex)
|
|
bcr9 |= (1 << 0);
|
|
else
|
|
bcr9 &= ~(1 << 0);
|
|
lp->a.write_bcr(dev->base_addr, 9, bcr9);
|
|
}
|
|
} else {
|
|
if (netif_msg_link(lp))
|
|
printk(KERN_INFO "%s: link up\n", dev->name);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check for loss of link and link establishment.
|
|
* Can not use mii_check_media because it does nothing if mode is forced.
|
|
*/
|
|
|
|
static void pcnet32_watchdog(struct net_device *dev)
|
|
{
|
|
struct pcnet32_private *lp = dev->priv;
|
|
unsigned long flags;
|
|
|
|
/* Print the link status if it has changed */
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
pcnet32_check_media(dev, 0);
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
mod_timer(&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
|
|
}
|
|
|
|
static void __devexit pcnet32_remove_one(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *dev = pci_get_drvdata(pdev);
|
|
|
|
if (dev) {
|
|
struct pcnet32_private *lp = dev->priv;
|
|
|
|
unregister_netdev(dev);
|
|
pcnet32_free_ring(dev);
|
|
release_region(dev->base_addr, PCNET32_TOTAL_SIZE);
|
|
pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
|
|
free_netdev(dev);
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
}
|
|
|
|
static struct pci_driver pcnet32_driver = {
|
|
.name = DRV_NAME,
|
|
.probe = pcnet32_probe_pci,
|
|
.remove = __devexit_p(pcnet32_remove_one),
|
|
.id_table = pcnet32_pci_tbl,
|
|
};
|
|
|
|
/* An additional parameter that may be passed in... */
|
|
static int debug = -1;
|
|
static int tx_start_pt = -1;
|
|
static int pcnet32_have_pci;
|
|
|
|
module_param(debug, int, 0);
|
|
MODULE_PARM_DESC(debug, DRV_NAME " debug level");
|
|
module_param(max_interrupt_work, int, 0);
|
|
MODULE_PARM_DESC(max_interrupt_work,
|
|
DRV_NAME " maximum events handled per interrupt");
|
|
module_param(rx_copybreak, int, 0);
|
|
MODULE_PARM_DESC(rx_copybreak,
|
|
DRV_NAME " copy breakpoint for copy-only-tiny-frames");
|
|
module_param(tx_start_pt, int, 0);
|
|
MODULE_PARM_DESC(tx_start_pt, DRV_NAME " transmit start point (0-3)");
|
|
module_param(pcnet32vlb, int, 0);
|
|
MODULE_PARM_DESC(pcnet32vlb, DRV_NAME " Vesa local bus (VLB) support (0/1)");
|
|
module_param_array(options, int, NULL, 0);
|
|
MODULE_PARM_DESC(options, DRV_NAME " initial option setting(s) (0-15)");
|
|
module_param_array(full_duplex, int, NULL, 0);
|
|
MODULE_PARM_DESC(full_duplex, DRV_NAME " full duplex setting(s) (1)");
|
|
/* Module Parameter for HomePNA cards added by Patrick Simmons, 2004 */
|
|
module_param_array(homepna, int, NULL, 0);
|
|
MODULE_PARM_DESC(homepna,
|
|
DRV_NAME
|
|
" mode for 79C978 cards (1 for HomePNA, 0 for Ethernet, default Ethernet");
|
|
|
|
MODULE_AUTHOR("Thomas Bogendoerfer");
|
|
MODULE_DESCRIPTION("Driver for PCnet32 and PCnetPCI based ethercards");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#define PCNET32_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
|
|
|
|
static int __init pcnet32_init_module(void)
|
|
{
|
|
printk(KERN_INFO "%s", version);
|
|
|
|
pcnet32_debug = netif_msg_init(debug, PCNET32_MSG_DEFAULT);
|
|
|
|
if ((tx_start_pt >= 0) && (tx_start_pt <= 3))
|
|
tx_start = tx_start_pt;
|
|
|
|
/* find the PCI devices */
|
|
if (!pci_register_driver(&pcnet32_driver))
|
|
pcnet32_have_pci = 1;
|
|
|
|
/* should we find any remaining VLbus devices ? */
|
|
if (pcnet32vlb)
|
|
pcnet32_probe_vlbus(pcnet32_portlist);
|
|
|
|
if (cards_found && (pcnet32_debug & NETIF_MSG_PROBE))
|
|
printk(KERN_INFO PFX "%d cards_found.\n", cards_found);
|
|
|
|
return (pcnet32_have_pci + cards_found) ? 0 : -ENODEV;
|
|
}
|
|
|
|
static void __exit pcnet32_cleanup_module(void)
|
|
{
|
|
struct net_device *next_dev;
|
|
|
|
while (pcnet32_dev) {
|
|
struct pcnet32_private *lp = pcnet32_dev->priv;
|
|
next_dev = lp->next;
|
|
unregister_netdev(pcnet32_dev);
|
|
pcnet32_free_ring(pcnet32_dev);
|
|
release_region(pcnet32_dev->base_addr, PCNET32_TOTAL_SIZE);
|
|
pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
|
|
free_netdev(pcnet32_dev);
|
|
pcnet32_dev = next_dev;
|
|
}
|
|
|
|
if (pcnet32_have_pci)
|
|
pci_unregister_driver(&pcnet32_driver);
|
|
}
|
|
|
|
module_init(pcnet32_init_module);
|
|
module_exit(pcnet32_cleanup_module);
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-indent-level: 4
|
|
* tab-width: 8
|
|
* End:
|
|
*/
|