994 lines
29 KiB
C
994 lines
29 KiB
C
// SPDX-License-Identifier: GPL-1.0+
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/* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
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/*
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Written 1992-94 by Donald Becker.
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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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The author may be reached as becker@scyld.com, or C/O
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Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
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This driver should work with many programmed-I/O 8390-based ethernet
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boards. Currently it supports the NE1000, NE2000, many clones,
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and some Cabletron products.
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Changelog:
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Paul Gortmaker : use ENISR_RDC to monitor Tx PIO uploads, made
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sanity checks and bad clone support optional.
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Paul Gortmaker : new reset code, reset card after probe at boot.
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Paul Gortmaker : multiple card support for module users.
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Paul Gortmaker : Support for PCI ne2k clones, similar to lance.c
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Paul Gortmaker : Allow users with bad cards to avoid full probe.
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Paul Gortmaker : PCI probe changes, more PCI cards supported.
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rjohnson@analogic.com : Changed init order so an interrupt will only
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occur after memory is allocated for dev->priv. Deallocated memory
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last in cleanup_modue()
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Richard Guenther : Added support for ISAPnP cards
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Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead.
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Hayato Fujiwara : Add m32r support.
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*/
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/* Routines for the NatSemi-based designs (NE[12]000). */
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static const char version1[] =
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"ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n";
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static const char version2[] =
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"Last modified Nov 1, 2000 by Paul Gortmaker\n";
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/isapnp.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/jiffies.h>
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#include <linux/platform_device.h>
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#include <net/Space.h>
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#include <asm/io.h>
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#include "8390.h"
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#define DRV_NAME "ne"
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/* Some defines that people can play with if so inclined. */
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/* Do we support clones that don't adhere to 14,15 of the SAprom ? */
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#define SUPPORT_NE_BAD_CLONES
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/* 0xbad = bad sig or no reset ack */
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#define BAD 0xbad
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#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
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static struct platform_device *pdev_ne[MAX_NE_CARDS];
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static int io[MAX_NE_CARDS];
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static int irq[MAX_NE_CARDS];
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static int bad[MAX_NE_CARDS];
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static u32 ne_msg_enable;
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#ifdef MODULE
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module_param_hw_array(io, int, ioport, NULL, 0);
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module_param_hw_array(irq, int, irq, NULL, 0);
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module_param_array(bad, int, NULL, 0);
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module_param_named(msg_enable, ne_msg_enable, uint, 0444);
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MODULE_PARM_DESC(io, "I/O base address(es),required");
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MODULE_PARM_DESC(irq, "IRQ number(s)");
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MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
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MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
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MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
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MODULE_LICENSE("GPL");
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#endif /* MODULE */
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/* Do we perform extra sanity checks on stuff ? */
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/* #define NE_SANITY_CHECK */
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/* Do we implement the read before write bugfix ? */
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/* #define NE_RW_BUGFIX */
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/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
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/* #define PACKETBUF_MEMSIZE 0x40 */
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/* This is set up so that no ISA autoprobe takes place. We can't guarantee
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that the ne2k probe is the last 8390 based probe to take place (as it
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is at boot) and so the probe will get confused by any other 8390 cards.
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ISA device autoprobes on a running machine are not recommended anyway. */
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#if !defined(MODULE) && defined(CONFIG_ISA)
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/* Do we need a portlist for the ISA auto-probe ? */
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#define NEEDS_PORTLIST
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#endif
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/* A zero-terminated list of I/O addresses to be probed at boot. */
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#ifdef NEEDS_PORTLIST
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static unsigned int netcard_portlist[] __initdata = {
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0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
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};
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#endif
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static struct isapnp_device_id isapnp_clone_list[] __initdata = {
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{ ISAPNP_CARD_ID('A','X','E',0x2011),
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ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
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(long) "NetGear EA201" },
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{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
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ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
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(long) "NN NE2000" },
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{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
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ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
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(long) "Generic PNP" },
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{ } /* terminate list */
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};
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MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
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#ifdef SUPPORT_NE_BAD_CLONES
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/* A list of bad clones that we none-the-less recognize. */
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static struct { const char *name8, *name16; unsigned char SAprefix[4];}
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bad_clone_list[] __initdata = {
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{"DE100", "DE200", {0x00, 0xDE, 0x01,}},
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{"DE120", "DE220", {0x00, 0x80, 0xc8,}},
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{"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
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{"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
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{"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
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{"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
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{"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
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{"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
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{"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
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{"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
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{"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
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{"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
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{"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
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#ifdef CONFIG_MACH_TX49XX
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{"RBHMA4X00-RTL8019", "RBHMA4X00-RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
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#endif
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{"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
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{NULL,}
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};
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#endif
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/* ---- No user-serviceable parts below ---- */
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#define NE_BASE (dev->base_addr)
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#define NE_CMD 0x00
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#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
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#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
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#define NE_IO_EXTENT 0x20
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#define NE1SM_START_PG 0x20 /* First page of TX buffer */
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#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
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#define NESM_START_PG 0x40 /* First page of TX buffer */
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#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
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#if defined(CONFIG_MACH_TX49XX)
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# define DCR_VAL 0x48 /* 8-bit mode */
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#elif defined(CONFIG_ATARI) /* 8-bit mode on Atari, normal on Q40 */
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# define DCR_VAL (MACH_IS_ATARI ? 0x48 : 0x49)
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#else
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# define DCR_VAL 0x49
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#endif
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static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
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static int ne_probe_isapnp(struct net_device *dev);
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static void ne_reset_8390(struct net_device *dev);
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static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
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int ring_page);
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static void ne_block_input(struct net_device *dev, int count,
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struct sk_buff *skb, int ring_offset);
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static void ne_block_output(struct net_device *dev, const int count,
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const unsigned char *buf, const int start_page);
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/* Probe for various non-shared-memory ethercards.
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NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
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buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
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the SAPROM, while other supposed NE2000 clones must be detected by their
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SA prefix.
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Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
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mode results in doubled values, which can be detected and compensated for.
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The probe is also responsible for initializing the card and filling
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in the 'dev' and 'ei_status' structures.
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We use the minimum memory size for some ethercard product lines, iff we can't
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distinguish models. You can increase the packet buffer size by setting
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PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
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E1010 starts at 0x100 and ends at 0x2000.
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E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
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E2010 starts at 0x100 and ends at 0x4000.
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E2010-x starts at 0x100 and ends at 0xffff. */
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static int __init do_ne_probe(struct net_device *dev)
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{
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unsigned long base_addr = dev->base_addr;
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#ifdef NEEDS_PORTLIST
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int orig_irq = dev->irq;
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#endif
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/* First check any supplied i/o locations. User knows best. <cough> */
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if (base_addr > 0x1ff) { /* Check a single specified location. */
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int ret = ne_probe1(dev, base_addr);
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if (ret)
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netdev_warn(dev, "ne.c: No NE*000 card found at "
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"i/o = %#lx\n", base_addr);
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return ret;
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}
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else if (base_addr != 0) /* Don't probe at all. */
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return -ENXIO;
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/* Then look for any installed ISAPnP clones */
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if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
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return 0;
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#ifdef NEEDS_PORTLIST
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/* Last resort. The semi-risky ISA auto-probe. */
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for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
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int ioaddr = netcard_portlist[base_addr];
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dev->irq = orig_irq;
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if (ne_probe1(dev, ioaddr) == 0)
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return 0;
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}
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#endif
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return -ENODEV;
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}
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static int __init ne_probe_isapnp(struct net_device *dev)
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{
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int i;
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for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
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struct pnp_dev *idev = NULL;
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while ((idev = pnp_find_dev(NULL,
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isapnp_clone_list[i].vendor,
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isapnp_clone_list[i].function,
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idev))) {
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/* Avoid already found cards from previous calls */
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if (pnp_device_attach(idev) < 0)
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continue;
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if (pnp_activate_dev(idev) < 0) {
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pnp_device_detach(idev);
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continue;
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}
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/* if no io and irq, search for next */
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if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
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pnp_device_detach(idev);
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continue;
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}
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/* found it */
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dev->base_addr = pnp_port_start(idev, 0);
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dev->irq = pnp_irq(idev, 0);
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netdev_info(dev,
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"ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
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(char *) isapnp_clone_list[i].driver_data,
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dev->base_addr, dev->irq);
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if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
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netdev_err(dev,
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"ne.c: Probe of ISAPnP card at %#lx failed.\n",
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dev->base_addr);
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pnp_device_detach(idev);
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return -ENXIO;
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}
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ei_status.priv = (unsigned long)idev;
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break;
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}
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if (!idev)
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continue;
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return 0;
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}
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return -ENODEV;
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}
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static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
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{
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int i;
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unsigned char SA_prom[32];
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int wordlength = 2;
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const char *name = NULL;
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int start_page, stop_page;
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int neX000, ctron, copam, bad_card;
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int reg0, ret;
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static unsigned version_printed;
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struct ei_device *ei_local = netdev_priv(dev);
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if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
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return -EBUSY;
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reg0 = inb_p(ioaddr);
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if (reg0 == 0xFF) {
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ret = -ENODEV;
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goto err_out;
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}
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/* Do a preliminary verification that we have a 8390. */
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{
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int regd;
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outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
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regd = inb_p(ioaddr + 0x0d);
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outb_p(0xff, ioaddr + 0x0d);
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outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
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inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
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if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
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outb_p(reg0, ioaddr);
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outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
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ret = -ENODEV;
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goto err_out;
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}
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}
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if ((ne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
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netdev_info(dev, "%s%s", version1, version2);
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netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr);
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/* A user with a poor card that fails to ack the reset, or that
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does not have a valid 0x57,0x57 signature can still use this
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without having to recompile. Specifying an i/o address along
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with an otherwise unused dev->mem_end value of "0xBAD" will
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cause the driver to skip these parts of the probe. */
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bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));
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/* Reset card. Who knows what dain-bramaged state it was left in. */
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{
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unsigned long reset_start_time = jiffies;
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/* DON'T change these to inb_p/outb_p or reset will fail on clones. */
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outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
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while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
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if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
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if (bad_card) {
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pr_cont(" (warning: no reset ack)");
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break;
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} else {
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pr_cont(" not found (no reset ack).\n");
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ret = -ENODEV;
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goto err_out;
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}
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}
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outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
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}
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/* Read the 16 bytes of station address PROM.
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We must first initialize registers, similar to NS8390p_init(eifdev, 0).
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We can't reliably read the SAPROM address without this.
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(I learned the hard way!). */
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{
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struct {unsigned char value, offset; } program_seq[] =
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{
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{E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
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{0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
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{0x00, EN0_RCNTLO}, /* Clear the count regs. */
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{0x00, EN0_RCNTHI},
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{0x00, EN0_IMR}, /* Mask completion irq. */
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{0xFF, EN0_ISR},
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{E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
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{E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
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{32, EN0_RCNTLO},
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{0x00, EN0_RCNTHI},
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{0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
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{0x00, EN0_RSARHI},
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{E8390_RREAD+E8390_START, E8390_CMD},
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};
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for (i = 0; i < ARRAY_SIZE(program_seq); i++)
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outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
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}
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for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
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SA_prom[i] = inb(ioaddr + NE_DATAPORT);
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SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
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if (SA_prom[i] != SA_prom[i+1])
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wordlength = 1;
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}
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if (wordlength == 2)
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{
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for (i = 0; i < 16; i++)
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SA_prom[i] = SA_prom[i+i];
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/* We must set the 8390 for word mode. */
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outb_p(DCR_VAL, ioaddr + EN0_DCFG);
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start_page = NESM_START_PG;
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/*
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* Realtek RTL8019AS datasheet says that the PSTOP register
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* shouldn't exceed 0x60 in 8-bit mode.
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* This chip can be identified by reading the signature from
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* the remote byte count registers (otherwise write-only)...
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*/
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if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
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inb(ioaddr + EN0_RCNTLO) == 0x50 &&
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inb(ioaddr + EN0_RCNTHI) == 0x70)
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stop_page = 0x60;
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else
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stop_page = NESM_STOP_PG;
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} else {
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start_page = NE1SM_START_PG;
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stop_page = NE1SM_STOP_PG;
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}
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neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
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ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
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copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
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/* Set up the rest of the parameters. */
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if (neX000 || bad_card || copam) {
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name = (wordlength == 2) ? "NE2000" : "NE1000";
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}
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else if (ctron)
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{
|
|
name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
|
|
start_page = 0x01;
|
|
stop_page = (wordlength == 2) ? 0x40 : 0x20;
|
|
}
|
|
else
|
|
{
|
|
#ifdef SUPPORT_NE_BAD_CLONES
|
|
/* Ack! Well, there might be a *bad* NE*000 clone there.
|
|
Check for total bogus addresses. */
|
|
for (i = 0; bad_clone_list[i].name8; i++)
|
|
{
|
|
if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
|
|
SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
|
|
SA_prom[2] == bad_clone_list[i].SAprefix[2])
|
|
{
|
|
if (wordlength == 2)
|
|
{
|
|
name = bad_clone_list[i].name16;
|
|
} else {
|
|
name = bad_clone_list[i].name8;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (bad_clone_list[i].name8 == NULL)
|
|
{
|
|
pr_cont(" not found (invalid signature %2.2x %2.2x).\n",
|
|
SA_prom[14], SA_prom[15]);
|
|
ret = -ENXIO;
|
|
goto err_out;
|
|
}
|
|
#else
|
|
pr_cont(" not found.\n");
|
|
ret = -ENXIO;
|
|
goto err_out;
|
|
#endif
|
|
}
|
|
|
|
if (dev->irq < 2)
|
|
{
|
|
unsigned long cookie = probe_irq_on();
|
|
outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
|
|
outb_p(0x00, ioaddr + EN0_RCNTLO);
|
|
outb_p(0x00, ioaddr + EN0_RCNTHI);
|
|
outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
|
|
mdelay(10); /* wait 10ms for interrupt to propagate */
|
|
outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
|
|
dev->irq = probe_irq_off(cookie);
|
|
if (ne_msg_enable & NETIF_MSG_PROBE)
|
|
pr_cont(" autoirq is %d", dev->irq);
|
|
} else if (dev->irq == 2)
|
|
/* Fixup for users that don't know that IRQ 2 is really IRQ 9,
|
|
or don't know which one to set. */
|
|
dev->irq = 9;
|
|
|
|
if (! dev->irq) {
|
|
pr_cont(" failed to detect IRQ line.\n");
|
|
ret = -EAGAIN;
|
|
goto err_out;
|
|
}
|
|
|
|
/* Snarf the interrupt now. There's no point in waiting since we cannot
|
|
share and the board will usually be enabled. */
|
|
ret = request_irq(dev->irq, eip_interrupt, 0, name, dev);
|
|
if (ret) {
|
|
pr_cont(" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
|
|
goto err_out;
|
|
}
|
|
|
|
dev->base_addr = ioaddr;
|
|
|
|
eth_hw_addr_set(dev, SA_prom);
|
|
|
|
pr_cont("%pM\n", dev->dev_addr);
|
|
|
|
ei_status.name = name;
|
|
ei_status.tx_start_page = start_page;
|
|
ei_status.stop_page = stop_page;
|
|
|
|
/* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
|
|
ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
|
|
|
|
ei_status.rx_start_page = start_page + TX_PAGES;
|
|
#ifdef PACKETBUF_MEMSIZE
|
|
/* Allow the packet buffer size to be overridden by know-it-alls. */
|
|
ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
|
|
#endif
|
|
|
|
ei_status.reset_8390 = &ne_reset_8390;
|
|
ei_status.block_input = &ne_block_input;
|
|
ei_status.block_output = &ne_block_output;
|
|
ei_status.get_8390_hdr = &ne_get_8390_hdr;
|
|
ei_status.priv = 0;
|
|
|
|
dev->netdev_ops = &eip_netdev_ops;
|
|
NS8390p_init(dev, 0);
|
|
|
|
ei_local->msg_enable = ne_msg_enable;
|
|
ret = register_netdev(dev);
|
|
if (ret)
|
|
goto out_irq;
|
|
netdev_info(dev, "%s found at %#lx, using IRQ %d.\n",
|
|
name, ioaddr, dev->irq);
|
|
return 0;
|
|
|
|
out_irq:
|
|
free_irq(dev->irq, dev);
|
|
err_out:
|
|
release_region(ioaddr, NE_IO_EXTENT);
|
|
return ret;
|
|
}
|
|
|
|
/* Hard reset the card. This used to pause for the same period that a
|
|
8390 reset command required, but that shouldn't be necessary. */
|
|
|
|
static void ne_reset_8390(struct net_device *dev)
|
|
{
|
|
unsigned long reset_start_time = jiffies;
|
|
struct ei_device *ei_local = netdev_priv(dev);
|
|
|
|
netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies);
|
|
|
|
/* DON'T change these to inb_p/outb_p or reset will fail on clones. */
|
|
outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
|
|
|
|
ei_status.txing = 0;
|
|
ei_status.dmaing = 0;
|
|
|
|
/* This check _should_not_ be necessary, omit eventually. */
|
|
while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
|
|
if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
|
|
netdev_err(dev, "ne_reset_8390() did not complete.\n");
|
|
break;
|
|
}
|
|
outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
|
|
}
|
|
|
|
/* Grab the 8390 specific header. Similar to the block_input routine, but
|
|
we don't need to be concerned with ring wrap as the header will be at
|
|
the start of a page, so we optimize accordingly. */
|
|
|
|
static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
|
|
{
|
|
int nic_base = dev->base_addr;
|
|
|
|
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
|
|
|
|
if (ei_status.dmaing)
|
|
{
|
|
netdev_err(dev, "DMAing conflict in ne_get_8390_hdr "
|
|
"[DMAstat:%d][irqlock:%d].\n",
|
|
ei_status.dmaing, ei_status.irqlock);
|
|
return;
|
|
}
|
|
|
|
ei_status.dmaing |= 0x01;
|
|
outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
|
|
outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
|
|
outb_p(0, nic_base + EN0_RCNTHI);
|
|
outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
|
|
outb_p(ring_page, nic_base + EN0_RSARHI);
|
|
outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
|
|
|
if (ei_status.word16)
|
|
insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
|
|
else
|
|
insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
|
|
|
|
outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
|
|
ei_status.dmaing &= ~0x01;
|
|
|
|
le16_to_cpus(&hdr->count);
|
|
}
|
|
|
|
/* Block input and output, similar to the Crynwr packet driver. If you
|
|
are porting to a new ethercard, look at the packet driver source for hints.
|
|
The NEx000 doesn't share the on-board packet memory -- you have to put
|
|
the packet out through the "remote DMA" dataport using outb. */
|
|
|
|
static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
|
|
{
|
|
#ifdef NE_SANITY_CHECK
|
|
int xfer_count = count;
|
|
struct ei_device *ei_local = netdev_priv(dev);
|
|
#endif
|
|
int nic_base = dev->base_addr;
|
|
char *buf = skb->data;
|
|
|
|
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
|
|
if (ei_status.dmaing)
|
|
{
|
|
netdev_err(dev, "DMAing conflict in ne_block_input "
|
|
"[DMAstat:%d][irqlock:%d].\n",
|
|
ei_status.dmaing, ei_status.irqlock);
|
|
return;
|
|
}
|
|
ei_status.dmaing |= 0x01;
|
|
outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
|
|
outb_p(count & 0xff, nic_base + EN0_RCNTLO);
|
|
outb_p(count >> 8, nic_base + EN0_RCNTHI);
|
|
outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
|
|
outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
|
|
outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
|
if (ei_status.word16)
|
|
{
|
|
insw(NE_BASE + NE_DATAPORT,buf,count>>1);
|
|
if (count & 0x01)
|
|
{
|
|
buf[count-1] = inb(NE_BASE + NE_DATAPORT);
|
|
#ifdef NE_SANITY_CHECK
|
|
xfer_count++;
|
|
#endif
|
|
}
|
|
} else {
|
|
insb(NE_BASE + NE_DATAPORT, buf, count);
|
|
}
|
|
|
|
#ifdef NE_SANITY_CHECK
|
|
/* This was for the ALPHA version only, but enough people have
|
|
been encountering problems so it is still here. If you see
|
|
this message you either 1) have a slightly incompatible clone
|
|
or 2) have noise/speed problems with your bus. */
|
|
|
|
if (netif_msg_rx_status(ei_local))
|
|
{
|
|
/* DMA termination address check... */
|
|
int addr, tries = 20;
|
|
do {
|
|
/* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
|
|
-- it's broken for Rx on some cards! */
|
|
int high = inb_p(nic_base + EN0_RSARHI);
|
|
int low = inb_p(nic_base + EN0_RSARLO);
|
|
addr = (high << 8) + low;
|
|
if (((ring_offset + xfer_count) & 0xff) == low)
|
|
break;
|
|
} while (--tries > 0);
|
|
if (tries <= 0)
|
|
netdev_warn(dev, "RX transfer address mismatch,"
|
|
"%#4.4x (expected) vs. %#4.4x (actual).\n",
|
|
ring_offset + xfer_count, addr);
|
|
}
|
|
#endif
|
|
outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
|
|
ei_status.dmaing &= ~0x01;
|
|
}
|
|
|
|
static void ne_block_output(struct net_device *dev, int count,
|
|
const unsigned char *buf, const int start_page)
|
|
{
|
|
int nic_base = NE_BASE;
|
|
unsigned long dma_start;
|
|
#ifdef NE_SANITY_CHECK
|
|
int retries = 0;
|
|
struct ei_device *ei_local = netdev_priv(dev);
|
|
#endif
|
|
|
|
/* Round the count up for word writes. Do we need to do this?
|
|
What effect will an odd byte count have on the 8390?
|
|
I should check someday. */
|
|
|
|
if (ei_status.word16 && (count & 0x01))
|
|
count++;
|
|
|
|
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
|
|
if (ei_status.dmaing)
|
|
{
|
|
netdev_err(dev, "DMAing conflict in ne_block_output."
|
|
"[DMAstat:%d][irqlock:%d]\n",
|
|
ei_status.dmaing, ei_status.irqlock);
|
|
return;
|
|
}
|
|
ei_status.dmaing |= 0x01;
|
|
/* We should already be in page 0, but to be safe... */
|
|
outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
|
|
|
|
#ifdef NE_SANITY_CHECK
|
|
retry:
|
|
#endif
|
|
|
|
#ifdef NE_RW_BUGFIX
|
|
/* Handle the read-before-write bug the same way as the
|
|
Crynwr packet driver -- the NatSemi method doesn't work.
|
|
Actually this doesn't always work either, but if you have
|
|
problems with your NEx000 this is better than nothing! */
|
|
|
|
outb_p(0x42, nic_base + EN0_RCNTLO);
|
|
outb_p(0x00, nic_base + EN0_RCNTHI);
|
|
outb_p(0x42, nic_base + EN0_RSARLO);
|
|
outb_p(0x00, nic_base + EN0_RSARHI);
|
|
outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
|
/* Make certain that the dummy read has occurred. */
|
|
udelay(6);
|
|
#endif
|
|
|
|
outb_p(ENISR_RDC, nic_base + EN0_ISR);
|
|
|
|
/* Now the normal output. */
|
|
outb_p(count & 0xff, nic_base + EN0_RCNTLO);
|
|
outb_p(count >> 8, nic_base + EN0_RCNTHI);
|
|
outb_p(0x00, nic_base + EN0_RSARLO);
|
|
outb_p(start_page, nic_base + EN0_RSARHI);
|
|
|
|
outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
|
|
if (ei_status.word16) {
|
|
outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
|
|
} else {
|
|
outsb(NE_BASE + NE_DATAPORT, buf, count);
|
|
}
|
|
|
|
dma_start = jiffies;
|
|
|
|
#ifdef NE_SANITY_CHECK
|
|
/* This was for the ALPHA version only, but enough people have
|
|
been encountering problems so it is still here. */
|
|
|
|
if (netif_msg_tx_queued(ei_local))
|
|
{
|
|
/* DMA termination address check... */
|
|
int addr, tries = 20;
|
|
do {
|
|
int high = inb_p(nic_base + EN0_RSARHI);
|
|
int low = inb_p(nic_base + EN0_RSARLO);
|
|
addr = (high << 8) + low;
|
|
if ((start_page << 8) + count == addr)
|
|
break;
|
|
} while (--tries > 0);
|
|
|
|
if (tries <= 0)
|
|
{
|
|
netdev_warn(dev, "Tx packet transfer address mismatch,"
|
|
"%#4.4x (expected) vs. %#4.4x (actual).\n",
|
|
(start_page << 8) + count, addr);
|
|
if (retries++ == 0)
|
|
goto retry;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
|
|
if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
|
|
netdev_warn(dev, "timeout waiting for Tx RDC.\n");
|
|
ne_reset_8390(dev);
|
|
NS8390p_init(dev, 1);
|
|
break;
|
|
}
|
|
|
|
outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
|
|
ei_status.dmaing &= ~0x01;
|
|
}
|
|
|
|
static int __init ne_drv_probe(struct platform_device *pdev)
|
|
{
|
|
struct net_device *dev;
|
|
int err, this_dev = pdev->id;
|
|
struct resource *res;
|
|
|
|
dev = alloc_eip_netdev();
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
/* ne.c doesn't populate resources in platform_device, but
|
|
* rbtx4927_ne_init and rbtx4938_ne_init do register devices
|
|
* with resources.
|
|
*/
|
|
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
|
|
if (res) {
|
|
dev->base_addr = res->start;
|
|
dev->irq = platform_get_irq(pdev, 0);
|
|
} else {
|
|
if (this_dev < 0 || this_dev >= MAX_NE_CARDS) {
|
|
free_netdev(dev);
|
|
return -EINVAL;
|
|
}
|
|
dev->base_addr = io[this_dev];
|
|
dev->irq = irq[this_dev];
|
|
dev->mem_end = bad[this_dev];
|
|
}
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
err = do_ne_probe(dev);
|
|
if (err) {
|
|
free_netdev(dev);
|
|
return err;
|
|
}
|
|
platform_set_drvdata(pdev, dev);
|
|
|
|
/* Update with any values found by probing, don't update if
|
|
* resources were specified.
|
|
*/
|
|
if (!res) {
|
|
io[this_dev] = dev->base_addr;
|
|
irq[this_dev] = dev->irq;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ne_drv_remove(struct platform_device *pdev)
|
|
{
|
|
struct net_device *dev = platform_get_drvdata(pdev);
|
|
|
|
if (dev) {
|
|
struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
|
|
netif_device_detach(dev);
|
|
unregister_netdev(dev);
|
|
if (idev)
|
|
pnp_device_detach(idev);
|
|
/* Careful ne_drv_remove can be called twice, once from
|
|
* the platform_driver.remove and again when the
|
|
* platform_device is being removed.
|
|
*/
|
|
ei_status.priv = 0;
|
|
free_irq(dev->irq, dev);
|
|
release_region(dev->base_addr, NE_IO_EXTENT);
|
|
free_netdev(dev);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Remove unused devices or all if true. */
|
|
static void ne_loop_rm_unreg(int all)
|
|
{
|
|
int this_dev;
|
|
struct platform_device *pdev;
|
|
for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
|
|
pdev = pdev_ne[this_dev];
|
|
/* No network device == unused */
|
|
if (pdev && (!platform_get_drvdata(pdev) || all)) {
|
|
ne_drv_remove(pdev);
|
|
platform_device_unregister(pdev);
|
|
pdev_ne[this_dev] = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
|
|
{
|
|
struct net_device *dev = platform_get_drvdata(pdev);
|
|
|
|
if (netif_running(dev)) {
|
|
struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
|
|
netif_device_detach(dev);
|
|
if (idev)
|
|
pnp_stop_dev(idev);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ne_drv_resume(struct platform_device *pdev)
|
|
{
|
|
struct net_device *dev = platform_get_drvdata(pdev);
|
|
|
|
if (netif_running(dev)) {
|
|
struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
|
|
if (idev)
|
|
pnp_start_dev(idev);
|
|
ne_reset_8390(dev);
|
|
NS8390p_init(dev, 1);
|
|
netif_device_attach(dev);
|
|
}
|
|
return 0;
|
|
}
|
|
#else
|
|
#define ne_drv_suspend NULL
|
|
#define ne_drv_resume NULL
|
|
#endif
|
|
|
|
static struct platform_driver ne_driver = {
|
|
.remove = ne_drv_remove,
|
|
.suspend = ne_drv_suspend,
|
|
.resume = ne_drv_resume,
|
|
.driver = {
|
|
.name = DRV_NAME,
|
|
},
|
|
};
|
|
|
|
static void __init ne_add_devices(void)
|
|
{
|
|
int this_dev;
|
|
struct platform_device *pdev;
|
|
|
|
for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
|
|
if (pdev_ne[this_dev])
|
|
continue;
|
|
pdev = platform_device_register_simple(
|
|
DRV_NAME, this_dev, NULL, 0);
|
|
if (IS_ERR(pdev))
|
|
continue;
|
|
pdev_ne[this_dev] = pdev;
|
|
}
|
|
}
|
|
|
|
static int __init ne_init(void)
|
|
{
|
|
int retval;
|
|
|
|
if (IS_MODULE(CONFIG_NE2000))
|
|
ne_add_devices();
|
|
|
|
retval = platform_driver_probe(&ne_driver, ne_drv_probe);
|
|
|
|
if (IS_MODULE(CONFIG_NE2000) && retval) {
|
|
if (io[0] == 0)
|
|
pr_notice("ne.c: You must supply \"io=0xNNN\""
|
|
" value(s) for ISA cards.\n");
|
|
ne_loop_rm_unreg(1);
|
|
return retval;
|
|
}
|
|
|
|
/* Unregister unused platform_devices. */
|
|
ne_loop_rm_unreg(0);
|
|
return retval;
|
|
}
|
|
module_init(ne_init);
|
|
|
|
#if !defined(MODULE) && defined(CONFIG_NETDEV_LEGACY_INIT)
|
|
struct net_device * __init ne_probe(int unit)
|
|
{
|
|
int this_dev;
|
|
struct net_device *dev;
|
|
|
|
/* Find an empty slot, that is no net_device and zero io port. */
|
|
this_dev = 0;
|
|
while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) ||
|
|
io[this_dev]) {
|
|
if (++this_dev == MAX_NE_CARDS)
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
/* Get irq, io from kernel command line */
|
|
dev = alloc_eip_netdev();
|
|
if (!dev)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
sprintf(dev->name, "eth%d", unit);
|
|
netdev_boot_setup_check(dev);
|
|
|
|
io[this_dev] = dev->base_addr;
|
|
irq[this_dev] = dev->irq;
|
|
bad[this_dev] = dev->mem_end;
|
|
|
|
free_netdev(dev);
|
|
|
|
ne_add_devices();
|
|
|
|
/* return the first device found */
|
|
for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
|
|
if (pdev_ne[this_dev]) {
|
|
dev = platform_get_drvdata(pdev_ne[this_dev]);
|
|
if (dev)
|
|
return dev;
|
|
}
|
|
}
|
|
|
|
return ERR_PTR(-ENODEV);
|
|
}
|
|
#endif
|
|
|
|
static void __exit ne_exit(void)
|
|
{
|
|
platform_driver_unregister(&ne_driver);
|
|
ne_loop_rm_unreg(1);
|
|
}
|
|
module_exit(ne_exit);
|