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849 lines
23 KiB
849 lines
23 KiB
/* mac8390.c: New driver for 8390-based Nubus (or Nubus-alike) |
|
Ethernet cards on Linux */ |
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/* Based on the former daynaport.c driver, by Alan Cox. Some code |
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taken from or inspired by skeleton.c by Donald Becker, acenic.c by |
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Jes Sorensen, and ne2k-pci.c by Donald Becker and Paul Gortmaker. |
|
|
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This software may be used and distributed according to the terms of |
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the GNU Public License, incorporated herein by reference. */ |
|
|
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/* 2000-02-28: support added for Dayna and Kinetics cards by |
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[email protected] */ |
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/* 2000-04-04: support added for Dayna2 by [email protected] */ |
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/* 2001-04-18: support for DaynaPort E/LC-M by [email protected] */ |
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/* 2001-05-15: support for Cabletron ported from old daynaport driver |
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* and fixed access to Sonic Sys card which masquerades as a Farallon |
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* by [email protected] */ |
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/* 2002-12-30: Try to support more cards, some clues from NetBSD driver */ |
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/* 2003-12-26: Make sure Asante cards always work. */ |
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|
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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|
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/types.h> |
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#include <linux/fcntl.h> |
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#include <linux/interrupt.h> |
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#include <linux/ptrace.h> |
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#include <linux/ioport.h> |
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#include <linux/nubus.h> |
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#include <linux/in.h> |
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#include <linux/string.h> |
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#include <linux/errno.h> |
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#include <linux/init.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/bitops.h> |
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#include <linux/io.h> |
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|
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#include <asm/dma.h> |
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#include <asm/hwtest.h> |
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#include <asm/macints.h> |
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|
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static char version[] = |
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"v0.4 2001-05-15 David Huggins-Daines <[email protected]> and others\n"; |
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|
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#define EI_SHIFT(x) (ei_local->reg_offset[x]) |
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#define ei_inb(port) in_8(port) |
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#define ei_outb(val, port) out_8(port, val) |
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#define ei_inb_p(port) in_8(port) |
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#define ei_outb_p(val, port) out_8(port, val) |
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|
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#include "lib8390.c" |
|
|
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#define WD_START_PG 0x00 /* First page of TX buffer */ |
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#define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */ |
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#define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */ |
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#define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG |
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/* First page of TX buffer */ |
|
|
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/* |
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* Unfortunately it seems we have to hardcode these for the moment |
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* Shouldn't the card know about this? |
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* Does anyone know where to read it off the card? |
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* Do we trust the data provided by the card? |
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*/ |
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|
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#define DAYNA_8390_BASE 0x80000 |
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#define DAYNA_8390_MEM 0x00000 |
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|
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#define CABLETRON_8390_BASE 0x90000 |
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#define CABLETRON_8390_MEM 0x00000 |
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|
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#define INTERLAN_8390_BASE 0xE0000 |
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#define INTERLAN_8390_MEM 0xD0000 |
|
|
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enum mac8390_type { |
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MAC8390_NONE = -1, |
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MAC8390_APPLE, |
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MAC8390_ASANTE, |
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MAC8390_FARALLON, |
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MAC8390_CABLETRON, |
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MAC8390_DAYNA, |
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MAC8390_INTERLAN, |
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MAC8390_KINETICS, |
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}; |
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|
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static const char *cardname[] = { |
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"apple", |
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"asante", |
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"farallon", |
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"cabletron", |
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"dayna", |
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"interlan", |
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"kinetics", |
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}; |
|
|
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static const int word16[] = { |
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1, /* apple */ |
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1, /* asante */ |
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1, /* farallon */ |
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1, /* cabletron */ |
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0, /* dayna */ |
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1, /* interlan */ |
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0, /* kinetics */ |
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}; |
|
|
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/* on which cards do we use NuBus resources? */ |
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static const int useresources[] = { |
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1, /* apple */ |
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1, /* asante */ |
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1, /* farallon */ |
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0, /* cabletron */ |
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0, /* dayna */ |
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0, /* interlan */ |
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0, /* kinetics */ |
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}; |
|
|
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enum mac8390_access { |
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ACCESS_UNKNOWN = 0, |
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ACCESS_32, |
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ACCESS_16, |
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}; |
|
|
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extern int mac8390_memtest(struct net_device *dev); |
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static int mac8390_initdev(struct net_device *dev, struct nubus_board *board, |
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enum mac8390_type type); |
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|
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static int mac8390_open(struct net_device *dev); |
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static int mac8390_close(struct net_device *dev); |
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static void mac8390_no_reset(struct net_device *dev); |
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static void interlan_reset(struct net_device *dev); |
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|
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/* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/ |
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static void sane_get_8390_hdr(struct net_device *dev, |
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struct e8390_pkt_hdr *hdr, int ring_page); |
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static void sane_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 sane_block_output(struct net_device *dev, int count, |
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const unsigned char *buf, const int start_page); |
|
|
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/* dayna_memcpy to and from card */ |
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static void dayna_memcpy_fromcard(struct net_device *dev, void *to, |
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int from, int count); |
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static void dayna_memcpy_tocard(struct net_device *dev, int to, |
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const void *from, int count); |
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|
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/* Dayna - Dayna/Kinetics use this */ |
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static void dayna_get_8390_hdr(struct net_device *dev, |
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struct e8390_pkt_hdr *hdr, int ring_page); |
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static void dayna_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 dayna_block_output(struct net_device *dev, int count, |
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const unsigned char *buf, int start_page); |
|
|
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/* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */ |
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static void slow_sane_get_8390_hdr(struct net_device *dev, |
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struct e8390_pkt_hdr *hdr, int ring_page); |
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static void slow_sane_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 slow_sane_block_output(struct net_device *dev, int count, |
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const unsigned char *buf, int start_page); |
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static void word_memcpy_tocard(unsigned long tp, const void *fp, int count); |
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static void word_memcpy_fromcard(void *tp, unsigned long fp, int count); |
|
|
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static enum mac8390_type mac8390_ident(struct nubus_rsrc *fres) |
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{ |
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switch (fres->dr_sw) { |
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case NUBUS_DRSW_3COM: |
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switch (fres->dr_hw) { |
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case NUBUS_DRHW_APPLE_SONIC_NB: |
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case NUBUS_DRHW_APPLE_SONIC_LC: |
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case NUBUS_DRHW_SONNET: |
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return MAC8390_NONE; |
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default: |
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return MAC8390_APPLE; |
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} |
|
|
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case NUBUS_DRSW_APPLE: |
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switch (fres->dr_hw) { |
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case NUBUS_DRHW_ASANTE_LC: |
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return MAC8390_NONE; |
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case NUBUS_DRHW_CABLETRON: |
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return MAC8390_CABLETRON; |
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default: |
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return MAC8390_APPLE; |
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} |
|
|
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case NUBUS_DRSW_ASANTE: |
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return MAC8390_ASANTE; |
|
|
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case NUBUS_DRSW_TECHWORKS: |
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case NUBUS_DRSW_DAYNA2: |
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case NUBUS_DRSW_DAYNA_LC: |
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if (fres->dr_hw == NUBUS_DRHW_CABLETRON) |
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return MAC8390_CABLETRON; |
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else |
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return MAC8390_APPLE; |
|
|
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case NUBUS_DRSW_FARALLON: |
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return MAC8390_FARALLON; |
|
|
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case NUBUS_DRSW_KINETICS: |
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switch (fres->dr_hw) { |
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case NUBUS_DRHW_INTERLAN: |
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return MAC8390_INTERLAN; |
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default: |
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return MAC8390_KINETICS; |
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} |
|
|
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case NUBUS_DRSW_DAYNA: |
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/* |
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* These correspond to Dayna Sonic cards |
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* which use the macsonic driver |
|
*/ |
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if (fres->dr_hw == NUBUS_DRHW_SMC9194 || |
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fres->dr_hw == NUBUS_DRHW_INTERLAN) |
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return MAC8390_NONE; |
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else |
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return MAC8390_DAYNA; |
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} |
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return MAC8390_NONE; |
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} |
|
|
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static enum mac8390_access mac8390_testio(unsigned long membase) |
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{ |
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u32 outdata = 0xA5A0B5B0; |
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u32 indata = 0; |
|
|
|
/* Try writing 32 bits */ |
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nubus_writel(outdata, membase); |
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/* Now read it back */ |
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indata = nubus_readl(membase); |
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if (outdata == indata) |
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return ACCESS_32; |
|
|
|
outdata = 0xC5C0D5D0; |
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indata = 0; |
|
|
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/* Write 16 bit output */ |
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word_memcpy_tocard(membase, &outdata, 4); |
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/* Now read it back */ |
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word_memcpy_fromcard(&indata, membase, 4); |
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if (outdata == indata) |
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return ACCESS_16; |
|
|
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return ACCESS_UNKNOWN; |
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} |
|
|
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static int mac8390_memsize(unsigned long membase) |
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{ |
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unsigned long flags; |
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int i, j; |
|
|
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local_irq_save(flags); |
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/* Check up to 32K in 4K increments */ |
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for (i = 0; i < 8; i++) { |
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volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000)); |
|
|
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/* Unwriteable - we have a fully decoded card and the |
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RAM end located */ |
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if (hwreg_present(m) == 0) |
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break; |
|
|
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/* write a distinctive byte */ |
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*m = 0xA5A0 | i; |
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/* check that we read back what we wrote */ |
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if (*m != (0xA5A0 | i)) |
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break; |
|
|
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/* check for partial decode and wrap */ |
|
for (j = 0; j < i; j++) { |
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volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000)); |
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if (*p != (0xA5A0 | j)) |
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break; |
|
} |
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} |
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local_irq_restore(flags); |
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/* |
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* in any case, we stopped once we tried one block too many, |
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* or once we reached 32K |
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*/ |
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return i * 0x1000; |
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} |
|
|
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static bool mac8390_rsrc_init(struct net_device *dev, |
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struct nubus_rsrc *fres, |
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enum mac8390_type cardtype) |
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{ |
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struct nubus_board *board = fres->board; |
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struct nubus_dir dir; |
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struct nubus_dirent ent; |
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int offset; |
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volatile unsigned short *i; |
|
|
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dev->irq = SLOT2IRQ(board->slot); |
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/* This is getting to be a habit */ |
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dev->base_addr = board->slot_addr | ((board->slot & 0xf) << 20); |
|
|
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/* |
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* Get some Nubus info - we will trust the card's idea |
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* of where its memory and registers are. |
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*/ |
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|
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if (nubus_get_func_dir(fres, &dir) == -1) { |
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dev_err(&board->dev, |
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"Unable to get Nubus functional directory\n"); |
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return false; |
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} |
|
|
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/* Get the MAC address */ |
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if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) { |
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dev_info(&board->dev, "MAC address resource not found\n"); |
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return false; |
|
} |
|
|
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nubus_get_rsrc_mem(dev->dev_addr, &ent, 6); |
|
|
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if (useresources[cardtype] == 1) { |
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nubus_rewinddir(&dir); |
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if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, |
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&ent) == -1) { |
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dev_err(&board->dev, |
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"Memory offset resource not found\n"); |
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return false; |
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} |
|
nubus_get_rsrc_mem(&offset, &ent, 4); |
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dev->mem_start = dev->base_addr + offset; |
|
/* yes, this is how the Apple driver does it */ |
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dev->base_addr = dev->mem_start + 0x10000; |
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nubus_rewinddir(&dir); |
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if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, |
|
&ent) == -1) { |
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dev_info(&board->dev, |
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"Memory length resource not found, probing\n"); |
|
offset = mac8390_memsize(dev->mem_start); |
|
} else { |
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nubus_get_rsrc_mem(&offset, &ent, 4); |
|
} |
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dev->mem_end = dev->mem_start + offset; |
|
} else { |
|
switch (cardtype) { |
|
case MAC8390_KINETICS: |
|
case MAC8390_DAYNA: /* it's the same */ |
|
dev->base_addr = (int)(board->slot_addr + |
|
DAYNA_8390_BASE); |
|
dev->mem_start = (int)(board->slot_addr + |
|
DAYNA_8390_MEM); |
|
dev->mem_end = dev->mem_start + |
|
mac8390_memsize(dev->mem_start); |
|
break; |
|
case MAC8390_INTERLAN: |
|
dev->base_addr = (int)(board->slot_addr + |
|
INTERLAN_8390_BASE); |
|
dev->mem_start = (int)(board->slot_addr + |
|
INTERLAN_8390_MEM); |
|
dev->mem_end = dev->mem_start + |
|
mac8390_memsize(dev->mem_start); |
|
break; |
|
case MAC8390_CABLETRON: |
|
dev->base_addr = (int)(board->slot_addr + |
|
CABLETRON_8390_BASE); |
|
dev->mem_start = (int)(board->slot_addr + |
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CABLETRON_8390_MEM); |
|
/* The base address is unreadable if 0x00 |
|
* has been written to the command register |
|
* Reset the chip by writing E8390_NODMA + |
|
* E8390_PAGE0 + E8390_STOP just to be |
|
* sure |
|
*/ |
|
i = (void *)dev->base_addr; |
|
*i = 0x21; |
|
dev->mem_end = dev->mem_start + |
|
mac8390_memsize(dev->mem_start); |
|
break; |
|
|
|
default: |
|
dev_err(&board->dev, |
|
"No known base address for card type\n"); |
|
return false; |
|
} |
|
} |
|
|
|
return true; |
|
} |
|
|
|
static int mac8390_device_probe(struct nubus_board *board) |
|
{ |
|
struct net_device *dev; |
|
int err = -ENODEV; |
|
struct nubus_rsrc *fres; |
|
enum mac8390_type cardtype = MAC8390_NONE; |
|
|
|
dev = ____alloc_ei_netdev(0); |
|
if (!dev) |
|
return -ENOMEM; |
|
|
|
SET_NETDEV_DEV(dev, &board->dev); |
|
|
|
for_each_board_func_rsrc(board, fres) { |
|
if (fres->category != NUBUS_CAT_NETWORK || |
|
fres->type != NUBUS_TYPE_ETHERNET) |
|
continue; |
|
|
|
cardtype = mac8390_ident(fres); |
|
if (cardtype == MAC8390_NONE) |
|
continue; |
|
|
|
if (mac8390_rsrc_init(dev, fres, cardtype)) |
|
break; |
|
} |
|
if (!fres) |
|
goto out; |
|
|
|
err = mac8390_initdev(dev, board, cardtype); |
|
if (err) |
|
goto out; |
|
|
|
err = register_netdev(dev); |
|
if (err) |
|
goto out; |
|
|
|
nubus_set_drvdata(board, dev); |
|
return 0; |
|
|
|
out: |
|
free_netdev(dev); |
|
return err; |
|
} |
|
|
|
static int mac8390_device_remove(struct nubus_board *board) |
|
{ |
|
struct net_device *dev = nubus_get_drvdata(board); |
|
|
|
unregister_netdev(dev); |
|
free_netdev(dev); |
|
return 0; |
|
} |
|
|
|
static struct nubus_driver mac8390_driver = { |
|
.probe = mac8390_device_probe, |
|
.remove = mac8390_device_remove, |
|
.driver = { |
|
.name = KBUILD_MODNAME, |
|
.owner = THIS_MODULE, |
|
} |
|
}; |
|
|
|
MODULE_AUTHOR("David Huggins-Daines <[email protected]> and others"); |
|
MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); |
|
MODULE_LICENSE("GPL"); |
|
|
|
static int __init mac8390_init(void) |
|
{ |
|
return nubus_driver_register(&mac8390_driver); |
|
} |
|
module_init(mac8390_init); |
|
|
|
static void __exit mac8390_exit(void) |
|
{ |
|
nubus_driver_unregister(&mac8390_driver); |
|
} |
|
module_exit(mac8390_exit); |
|
|
|
static const struct net_device_ops mac8390_netdev_ops = { |
|
.ndo_open = mac8390_open, |
|
.ndo_stop = mac8390_close, |
|
.ndo_start_xmit = __ei_start_xmit, |
|
.ndo_tx_timeout = __ei_tx_timeout, |
|
.ndo_get_stats = __ei_get_stats, |
|
.ndo_set_rx_mode = __ei_set_multicast_list, |
|
.ndo_validate_addr = eth_validate_addr, |
|
.ndo_set_mac_address = eth_mac_addr, |
|
#ifdef CONFIG_NET_POLL_CONTROLLER |
|
.ndo_poll_controller = __ei_poll, |
|
#endif |
|
}; |
|
|
|
static int mac8390_initdev(struct net_device *dev, struct nubus_board *board, |
|
enum mac8390_type type) |
|
{ |
|
static u32 fwrd4_offsets[16] = { |
|
0, 4, 8, 12, |
|
16, 20, 24, 28, |
|
32, 36, 40, 44, |
|
48, 52, 56, 60 |
|
}; |
|
static u32 back4_offsets[16] = { |
|
60, 56, 52, 48, |
|
44, 40, 36, 32, |
|
28, 24, 20, 16, |
|
12, 8, 4, 0 |
|
}; |
|
static u32 fwrd2_offsets[16] = { |
|
0, 2, 4, 6, |
|
8, 10, 12, 14, |
|
16, 18, 20, 22, |
|
24, 26, 28, 30 |
|
}; |
|
|
|
int access_bitmode = 0; |
|
|
|
/* Now fill in our stuff */ |
|
dev->netdev_ops = &mac8390_netdev_ops; |
|
|
|
/* GAR, ei_status is actually a macro even though it looks global */ |
|
ei_status.name = cardname[type]; |
|
ei_status.word16 = word16[type]; |
|
|
|
/* Cabletron's TX/RX buffers are backwards */ |
|
if (type == MAC8390_CABLETRON) { |
|
ei_status.tx_start_page = CABLETRON_TX_START_PG; |
|
ei_status.rx_start_page = CABLETRON_RX_START_PG; |
|
ei_status.stop_page = CABLETRON_RX_STOP_PG; |
|
ei_status.rmem_start = dev->mem_start; |
|
ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; |
|
} else { |
|
ei_status.tx_start_page = WD_START_PG; |
|
ei_status.rx_start_page = WD_START_PG + TX_PAGES; |
|
ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; |
|
ei_status.rmem_start = dev->mem_start + TX_PAGES*256; |
|
ei_status.rmem_end = dev->mem_end; |
|
} |
|
|
|
/* Fill in model-specific information and functions */ |
|
switch (type) { |
|
case MAC8390_FARALLON: |
|
case MAC8390_APPLE: |
|
switch (mac8390_testio(dev->mem_start)) { |
|
case ACCESS_UNKNOWN: |
|
dev_err(&board->dev, |
|
"Don't know how to access card memory\n"); |
|
return -ENODEV; |
|
|
|
case ACCESS_16: |
|
/* 16 bit card, register map is reversed */ |
|
ei_status.reset_8390 = mac8390_no_reset; |
|
ei_status.block_input = slow_sane_block_input; |
|
ei_status.block_output = slow_sane_block_output; |
|
ei_status.get_8390_hdr = slow_sane_get_8390_hdr; |
|
ei_status.reg_offset = back4_offsets; |
|
break; |
|
|
|
case ACCESS_32: |
|
/* 32 bit card, register map is reversed */ |
|
ei_status.reset_8390 = mac8390_no_reset; |
|
ei_status.block_input = sane_block_input; |
|
ei_status.block_output = sane_block_output; |
|
ei_status.get_8390_hdr = sane_get_8390_hdr; |
|
ei_status.reg_offset = back4_offsets; |
|
access_bitmode = 1; |
|
break; |
|
} |
|
break; |
|
|
|
case MAC8390_ASANTE: |
|
/* Some Asante cards pass the 32 bit test |
|
* but overwrite system memory when run at 32 bit. |
|
* so we run them all at 16 bit. |
|
*/ |
|
ei_status.reset_8390 = mac8390_no_reset; |
|
ei_status.block_input = slow_sane_block_input; |
|
ei_status.block_output = slow_sane_block_output; |
|
ei_status.get_8390_hdr = slow_sane_get_8390_hdr; |
|
ei_status.reg_offset = back4_offsets; |
|
break; |
|
|
|
case MAC8390_CABLETRON: |
|
/* 16 bit card, register map is short forward */ |
|
ei_status.reset_8390 = mac8390_no_reset; |
|
ei_status.block_input = slow_sane_block_input; |
|
ei_status.block_output = slow_sane_block_output; |
|
ei_status.get_8390_hdr = slow_sane_get_8390_hdr; |
|
ei_status.reg_offset = fwrd2_offsets; |
|
break; |
|
|
|
case MAC8390_DAYNA: |
|
case MAC8390_KINETICS: |
|
/* 16 bit memory, register map is forward */ |
|
/* dayna and similar */ |
|
ei_status.reset_8390 = mac8390_no_reset; |
|
ei_status.block_input = dayna_block_input; |
|
ei_status.block_output = dayna_block_output; |
|
ei_status.get_8390_hdr = dayna_get_8390_hdr; |
|
ei_status.reg_offset = fwrd4_offsets; |
|
break; |
|
|
|
case MAC8390_INTERLAN: |
|
/* 16 bit memory, register map is forward */ |
|
ei_status.reset_8390 = interlan_reset; |
|
ei_status.block_input = slow_sane_block_input; |
|
ei_status.block_output = slow_sane_block_output; |
|
ei_status.get_8390_hdr = slow_sane_get_8390_hdr; |
|
ei_status.reg_offset = fwrd4_offsets; |
|
break; |
|
|
|
default: |
|
dev_err(&board->dev, "Unsupported card type\n"); |
|
return -ENODEV; |
|
} |
|
|
|
__NS8390_init(dev, 0); |
|
|
|
/* Good, done, now spit out some messages */ |
|
dev_info(&board->dev, "%s (type %s)\n", board->name, cardname[type]); |
|
dev_info(&board->dev, "MAC %pM, IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", |
|
dev->dev_addr, dev->irq, |
|
(unsigned int)(dev->mem_end - dev->mem_start) >> 10, |
|
dev->mem_start, access_bitmode ? 32 : 16); |
|
return 0; |
|
} |
|
|
|
static int mac8390_open(struct net_device *dev) |
|
{ |
|
int err; |
|
|
|
__ei_open(dev); |
|
err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); |
|
if (err) |
|
pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); |
|
return err; |
|
} |
|
|
|
static int mac8390_close(struct net_device *dev) |
|
{ |
|
free_irq(dev->irq, dev); |
|
__ei_close(dev); |
|
return 0; |
|
} |
|
|
|
static void mac8390_no_reset(struct net_device *dev) |
|
{ |
|
struct ei_device *ei_local = netdev_priv(dev); |
|
|
|
ei_status.txing = 0; |
|
netif_info(ei_local, hw, dev, "reset not supported\n"); |
|
} |
|
|
|
static void interlan_reset(struct net_device *dev) |
|
{ |
|
unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); |
|
struct ei_device *ei_local = netdev_priv(dev); |
|
|
|
netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...", |
|
jiffies); |
|
ei_status.txing = 0; |
|
target[0xC0000] = 0; |
|
if (netif_msg_hw(ei_local)) |
|
pr_cont("reset complete\n"); |
|
} |
|
|
|
/* dayna_memcpy_fromio/dayna_memcpy_toio */ |
|
/* directly from daynaport.c by Alan Cox */ |
|
static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, |
|
int count) |
|
{ |
|
volatile unsigned char *ptr; |
|
unsigned char *target = to; |
|
from <<= 1; /* word, skip overhead */ |
|
ptr = (unsigned char *)(dev->mem_start+from); |
|
/* Leading byte? */ |
|
if (from & 2) { |
|
*target++ = ptr[-1]; |
|
ptr += 2; |
|
count--; |
|
} |
|
while (count >= 2) { |
|
*(unsigned short *)target = *(unsigned short volatile *)ptr; |
|
ptr += 4; /* skip cruft */ |
|
target += 2; |
|
count -= 2; |
|
} |
|
/* Trailing byte? */ |
|
if (count) |
|
*target = *ptr; |
|
} |
|
|
|
static void dayna_memcpy_tocard(struct net_device *dev, int to, |
|
const void *from, int count) |
|
{ |
|
volatile unsigned short *ptr; |
|
const unsigned char *src = from; |
|
to <<= 1; /* word, skip overhead */ |
|
ptr = (unsigned short *)(dev->mem_start+to); |
|
/* Leading byte? */ |
|
if (to & 2) { /* avoid a byte write (stomps on other data) */ |
|
ptr[-1] = (ptr[-1]&0xFF00)|*src++; |
|
ptr++; |
|
count--; |
|
} |
|
while (count >= 2) { |
|
*ptr++ = *(unsigned short *)src; /* Copy and */ |
|
ptr++; /* skip cruft */ |
|
src += 2; |
|
count -= 2; |
|
} |
|
/* Trailing byte? */ |
|
if (count) { |
|
/* card doesn't like byte writes */ |
|
*ptr = (*ptr & 0x00FF) | (*src << 8); |
|
} |
|
} |
|
|
|
/* sane block input/output */ |
|
static void sane_get_8390_hdr(struct net_device *dev, |
|
struct e8390_pkt_hdr *hdr, int ring_page) |
|
{ |
|
unsigned long hdr_start = (ring_page - WD_START_PG)<<8; |
|
memcpy_fromio(hdr, (void __iomem *)dev->mem_start + hdr_start, 4); |
|
/* Fix endianness */ |
|
hdr->count = swab16(hdr->count); |
|
} |
|
|
|
static void sane_block_input(struct net_device *dev, int count, |
|
struct sk_buff *skb, int ring_offset) |
|
{ |
|
unsigned long xfer_base = ring_offset - (WD_START_PG<<8); |
|
unsigned long xfer_start = xfer_base + dev->mem_start; |
|
|
|
if (xfer_start + count > ei_status.rmem_end) { |
|
/* We must wrap the input move. */ |
|
int semi_count = ei_status.rmem_end - xfer_start; |
|
memcpy_fromio(skb->data, |
|
(void __iomem *)dev->mem_start + xfer_base, |
|
semi_count); |
|
count -= semi_count; |
|
memcpy_fromio(skb->data + semi_count, |
|
(void __iomem *)ei_status.rmem_start, count); |
|
} else { |
|
memcpy_fromio(skb->data, |
|
(void __iomem *)dev->mem_start + xfer_base, |
|
count); |
|
} |
|
} |
|
|
|
static void sane_block_output(struct net_device *dev, int count, |
|
const unsigned char *buf, int start_page) |
|
{ |
|
long shmem = (start_page - WD_START_PG)<<8; |
|
|
|
memcpy_toio((void __iomem *)dev->mem_start + shmem, buf, count); |
|
} |
|
|
|
/* dayna block input/output */ |
|
static void dayna_get_8390_hdr(struct net_device *dev, |
|
struct e8390_pkt_hdr *hdr, int ring_page) |
|
{ |
|
unsigned long hdr_start = (ring_page - WD_START_PG)<<8; |
|
|
|
dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); |
|
/* Fix endianness */ |
|
hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); |
|
} |
|
|
|
static void dayna_block_input(struct net_device *dev, int count, |
|
struct sk_buff *skb, int ring_offset) |
|
{ |
|
unsigned long xfer_base = ring_offset - (WD_START_PG<<8); |
|
unsigned long xfer_start = xfer_base+dev->mem_start; |
|
|
|
/* Note the offset math is done in card memory space which is word |
|
per long onto our space. */ |
|
|
|
if (xfer_start + count > ei_status.rmem_end) { |
|
/* We must wrap the input move. */ |
|
int semi_count = ei_status.rmem_end - xfer_start; |
|
dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); |
|
count -= semi_count; |
|
dayna_memcpy_fromcard(dev, skb->data + semi_count, |
|
ei_status.rmem_start - dev->mem_start, |
|
count); |
|
} else { |
|
dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); |
|
} |
|
} |
|
|
|
static void dayna_block_output(struct net_device *dev, int count, |
|
const unsigned char *buf, |
|
int start_page) |
|
{ |
|
long shmem = (start_page - WD_START_PG)<<8; |
|
|
|
dayna_memcpy_tocard(dev, shmem, buf, count); |
|
} |
|
|
|
/* Cabletron block I/O */ |
|
static void slow_sane_get_8390_hdr(struct net_device *dev, |
|
struct e8390_pkt_hdr *hdr, |
|
int ring_page) |
|
{ |
|
unsigned long hdr_start = (ring_page - WD_START_PG)<<8; |
|
word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); |
|
/* Register endianism - fix here rather than 8390.c */ |
|
hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); |
|
} |
|
|
|
static void slow_sane_block_input(struct net_device *dev, int count, |
|
struct sk_buff *skb, int ring_offset) |
|
{ |
|
unsigned long xfer_base = ring_offset - (WD_START_PG<<8); |
|
unsigned long xfer_start = xfer_base+dev->mem_start; |
|
|
|
if (xfer_start + count > ei_status.rmem_end) { |
|
/* We must wrap the input move. */ |
|
int semi_count = ei_status.rmem_end - xfer_start; |
|
word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, |
|
semi_count); |
|
count -= semi_count; |
|
word_memcpy_fromcard(skb->data + semi_count, |
|
ei_status.rmem_start, count); |
|
} else { |
|
word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, |
|
count); |
|
} |
|
} |
|
|
|
static void slow_sane_block_output(struct net_device *dev, int count, |
|
const unsigned char *buf, int start_page) |
|
{ |
|
long shmem = (start_page - WD_START_PG)<<8; |
|
|
|
word_memcpy_tocard(dev->mem_start + shmem, buf, count); |
|
} |
|
|
|
static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) |
|
{ |
|
volatile unsigned short *to = (void *)tp; |
|
const unsigned short *from = fp; |
|
|
|
count++; |
|
count /= 2; |
|
|
|
while (count--) |
|
*to++ = *from++; |
|
} |
|
|
|
static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) |
|
{ |
|
unsigned short *to = tp; |
|
const volatile unsigned short *from = (const void *)fp; |
|
|
|
count++; |
|
count /= 2; |
|
|
|
while (count--) |
|
*to++ = *from++; |
|
} |
|
|
|
|
|
|