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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [net/] [ac3200.c] - Blame information for rev 1777

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/* ac3200.c: A driver for the Ansel Communications EISA ethernet adaptor. */
/*
        Written 1993, 1994 by Donald Becker.
        Copyright 1993 United States Government as represented by the Director,
        National Security Agency.  This software may only be used and distributed
        according to the terms of the GNU Public License as modified by SRC,
        incorporated herein by reference.
 
        The author may be reached as becker@cesdis.gsfc.nasa.gov, or
    C/O Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771
 
        This is driver for the Ansel Communications Model 3200 EISA Ethernet LAN
        Adapter.  The programming information is from the users manual, as related
        by glee@ardnassak.math.clemson.edu.
  */
 
static const char *version =
        "ac3200.c:v1.01 7/1/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
 
#include <linux/module.h>
 
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
 
#include <asm/system.h>
#include <asm/io.h>
 
#include "8390.h"
 
/* Offsets from the base address. */
#define AC_NIC_BASE             0x00
#define AC_SA_PROM              0x16                    /* The station address PROM. */
#define  AC_ADDR0                0x00                   /* Prefix station address values. */
#define  AC_ADDR1                0x40                   /* !!!!These are just guesses!!!! */
#define  AC_ADDR2                0x90
#define AC_ID_PORT              0xC80
#define AC_EISA_ID               0x0110d305
#define AC_RESET_PORT   0xC84
#define  AC_RESET                0x00
#define  AC_ENABLE               0x01
#define AC_CONFIG               0xC90   /* The configuration port. */
 
#define AC_IO_EXTENT 0x10               /* IS THIS REALLY TRUE ??? */
                                /* Actually accessed is:
                                                                 * AC_NIC_BASE (0-15)
                                                                 * AC_SA_PROM (0-5)
                                                                 * AC_ID_PORT (0-3)
                                                                 * AC_RESET_PORT
                                                                 * AC_CONFIG
                                                                 */
 
/* Decoding of the configuration register. */
static unsigned char config2irqmap[8] = {15, 12, 11, 10, 9, 7, 5, 3};
static int addrmap[8] =
{0xFF0000, 0xFE0000, 0xFD0000, 0xFFF0000, 0xFFE0000, 0xFFC0000,  0xD0000, 0 };
static const char *port_name[4] = { "10baseT", "invalid", "AUI", "10base2"};
 
#define config2irq(configval)   config2irqmap[((configval) >> 3) & 7]
#define config2mem(configval)   addrmap[(configval) & 7]
#define config2name(configval)  port_name[((configval) >> 6) & 3]
 
/* First and last 8390 pages. */
#define AC_START_PG             0x00    /* First page of 8390 TX buffer */
#define AC_STOP_PG              0x80    /* Last page +1 of the 8390 RX ring */
 
int ac3200_probe(struct device *dev);
static int ac_probe1(int ioaddr, struct device *dev);
 
static int ac_open(struct device *dev);
static void ac_reset_8390(struct device *dev);
static void ac_block_input(struct device *dev, int count,
                                        struct sk_buff *skb, int ring_offset);
static void ac_block_output(struct device *dev, const int count,
                                                        const unsigned char *buf, const int start_page);
static void ac_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr,
                                        int ring_page);
 
static int ac_close_card(struct device *dev);
 
 
/*      Probe for the AC3200.
 
        The AC3200 can be identified by either the EISA configuration registers,
        or the unique value in the station address PROM.
        */
 
int ac3200_probe(struct device *dev)
{
        unsigned short ioaddr = dev->base_addr;
 
        if (ioaddr > 0x1ff)             /* Check a single specified location. */
                return ac_probe1(ioaddr, dev);
        else if (ioaddr > 0)             /* Don't probe at all. */
                return ENXIO;
 
        /* If you have a pre 0.99pl15 machine you should delete this line. */
        if ( ! EISA_bus)
                return ENXIO;
 
        for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
                if (check_region(ioaddr, AC_IO_EXTENT))
                        continue;
                if (ac_probe1(ioaddr, dev) == 0)
                        return 0;
        }
 
        return ENODEV;
}
 
static int ac_probe1(int ioaddr, struct device *dev)
{
        int i;
 
#ifndef final_version
        printk("AC3200 ethercard probe at %#3x:", ioaddr);
 
        for(i = 0; i < 6; i++)
                printk(" %02x", inb(ioaddr + AC_SA_PROM + i));
#endif
 
        /* !!!!The values of AC_ADDRn (see above) should be corrected when we
           find out the correct station address prefix!!!! */
        if (inb(ioaddr + AC_SA_PROM + 0) != AC_ADDR0
                || inb(ioaddr + AC_SA_PROM + 1) != AC_ADDR1
                || inb(ioaddr + AC_SA_PROM + 2) != AC_ADDR2 ) {
#ifndef final_version
                printk(" not found (invalid prefix).\n");
#endif
                return ENODEV;
        }
 
        /* The correct probe method is to check the EISA ID. */
        for (i = 0; i < 4; i++)
                if (inl(ioaddr + AC_ID_PORT) != AC_EISA_ID) {
                        printk("EISA ID mismatch, %8x vs %8x.\n",
                                   inl(ioaddr + AC_ID_PORT), AC_EISA_ID);
                        return ENODEV;
                }
 
 
        /* We should have a "dev" from Space.c or the static module table. */
        if (dev == NULL) {
                printk("ac3200.c: Passed a NULL device.\n");
                dev = init_etherdev(0, 0);
        }
 
        for(i = 0; i < ETHER_ADDR_LEN; i++)
                dev->dev_addr[i] = inb(ioaddr + AC_SA_PROM + i);
 
#ifndef final_version
        printk("\nAC3200 ethercard configuration register is %#02x,"
                   " EISA ID %02x %02x %02x %02x.\n", inb(ioaddr + AC_CONFIG),
                   inb(ioaddr + AC_ID_PORT + 0), inb(ioaddr + AC_ID_PORT + 1),
                   inb(ioaddr + AC_ID_PORT + 2), inb(ioaddr + AC_ID_PORT + 3));
#endif
 
        /* Assign and allocate the interrupt now. */
        if (dev->irq == 0)
                dev->irq = config2irq(inb(ioaddr + AC_CONFIG));
        else if (dev->irq == 2)
                dev->irq = 9;
 
        if (request_irq(dev->irq, ei_interrupt, 0, "ac3200", NULL)) {
                printk (" unable to get IRQ %d.\n", dev->irq);
                return EAGAIN;
        }
 
        /* Allocate dev->priv and fill in 8390 specific dev fields. */
        if (ethdev_init(dev)) {
                printk (" unable to allocate memory for dev->priv.\n");
                free_irq(dev->irq, NULL);
                return -ENOMEM;
        }
 
        request_region(ioaddr, AC_IO_EXTENT, "ac3200");
 
        dev->base_addr = ioaddr;
 
#ifdef notyet
        if (dev->mem_start)     {               /* Override the value from the board. */
                for (i = 0; i < 7; i++)
                        if (addrmap[i] == dev->mem_start)
                                break;
                if (i >= 7)
                        i = 0;
                outb((inb(ioaddr + AC_CONFIG) & ~7) | i, ioaddr + AC_CONFIG);
        }
#endif
 
        dev->if_port = inb(ioaddr + AC_CONFIG) >> 6;
        dev->mem_start = config2mem(inb(ioaddr + AC_CONFIG));
        dev->rmem_start = dev->mem_start + TX_PAGES*256;
        dev->mem_end = dev->rmem_end = dev->mem_start
                + (AC_STOP_PG - AC_START_PG)*256;
 
        ei_status.name = "AC3200";
        ei_status.tx_start_page = AC_START_PG;
        ei_status.rx_start_page = AC_START_PG + TX_PAGES;
        ei_status.stop_page = AC_STOP_PG;
        ei_status.word16 = 1;
 
        printk("\n%s: AC3200 at %#x, IRQ %d, %s port, shared memory %#lx-%#lx.\n",
                   dev->name, ioaddr, dev->irq, port_name[dev->if_port],
                   dev->mem_start, dev->mem_end-1);
 
        if (ei_debug > 0)
                printk(version);
 
        ei_status.reset_8390 = &ac_reset_8390;
        ei_status.block_input = &ac_block_input;
        ei_status.block_output = &ac_block_output;
        ei_status.get_8390_hdr = &ac_get_8390_hdr;
 
        dev->open = &ac_open;
        dev->stop = &ac_close_card;
        NS8390_init(dev, 0);
        return 0;
}
 
static int ac_open(struct device *dev)
{
#ifdef notyet
        /* Someday we may enable the IRQ and shared memory here. */
        int ioaddr = dev->base_addr;
 
        if (request_irq(dev->irq, ei_interrupt, 0, "ac3200", NULL))
                return -EAGAIN;
#endif
 
        ei_open(dev);
 
        MOD_INC_USE_COUNT;
 
        return 0;
}
 
static void ac_reset_8390(struct device *dev)
{
        ushort ioaddr = dev->base_addr;
 
        outb(AC_RESET, ioaddr + AC_RESET_PORT);
        if (ei_debug > 1) printk("resetting AC3200, t=%ld...", jiffies);
 
        ei_status.txing = 0;
        outb(AC_ENABLE, ioaddr + AC_RESET_PORT);
        if (ei_debug > 1) printk("reset done\n");
 
        return;
}
 
/* 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
ac_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
        unsigned long hdr_start = dev->mem_start + ((ring_page - AC_START_PG)<<8);
        memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
}
 
/*  Block input and output are easy on shared memory ethercards, the only
        complication is when the ring buffer wraps. */
 
static void ac_block_input(struct device *dev, int count, struct sk_buff *skb,
                                                  int ring_offset)
{
        unsigned long xfer_start = dev->mem_start + ring_offset - (AC_START_PG<<8);
 
        if (xfer_start + count > dev->rmem_end) {
                /* We must wrap the input move. */
                int semi_count = dev->rmem_end - xfer_start;
                memcpy_fromio(skb->data, xfer_start, semi_count);
                count -= semi_count;
                memcpy_fromio(skb->data + semi_count, dev->rmem_start, count);
        } else {
                /* Packet is in one chunk -- we can copy + cksum. */
                eth_io_copy_and_sum(skb, xfer_start, count, 0);
        }
}
 
static void ac_block_output(struct device *dev, int count,
                                                        const unsigned char *buf, int start_page)
{
        unsigned long shmem = dev->mem_start + ((start_page - AC_START_PG)<<8);
 
        memcpy_toio(shmem, buf, count);
}
 
static int ac_close_card(struct device *dev)
{
        dev->start = 0;
        dev->tbusy = 1;
 
        if (ei_debug > 1)
                printk("%s: Shutting down ethercard.\n", dev->name);
 
#ifdef notyet
        /* We should someday disable shared memory and interrupts. */
        outb(0x00, ioaddr + 6); /* Disable interrupts. */
        free_irq(dev->irq, NULL);
        irq2dev_map[dev->irq] = 0;
#endif
 
        ei_close(dev);
 
        MOD_DEC_USE_COUNT;
 
        return 0;
}
 
#ifdef MODULE
#define MAX_AC32_CARDS  4       /* Max number of AC32 cards per module */
#define NAMELEN         8       /* # of chars for storing dev->name */
static char namelist[NAMELEN * MAX_AC32_CARDS] = { 0, };
static struct device dev_ac32[MAX_AC32_CARDS] = {
        {
                NULL,           /* assign a chunk of namelist[] below */
                0, 0, 0, 0,
                0, 0,
                0, 0, 0, NULL, NULL
        },
};
 
static int io[MAX_AC32_CARDS] = { 0, };
static int irq[MAX_AC32_CARDS]  = { 0, };
static int mem[MAX_AC32_CARDS] = { 0, };
 
int
init_module(void)
{
        int this_dev, found = 0;
 
        for (this_dev = 0; this_dev < MAX_AC32_CARDS; this_dev++) {
                struct device *dev = &dev_ac32[this_dev];
                dev->name = namelist+(NAMELEN*this_dev);
                dev->irq = irq[this_dev];
                dev->base_addr = io[this_dev];
                dev->mem_start = mem[this_dev];         /* Currently ignored by driver */
                dev->init = ac3200_probe;
                /* Default is to only install one card. */
                if (io[this_dev] == 0 && this_dev != 0) break;
                if (register_netdev(dev) != 0) {
                        printk(KERN_WARNING "ac3200.c: No ac3200 card found (i/o = 0x%x).\n", io[this_dev]);
                        if (found != 0) return 0; /* Got at least one. */
                        return -ENXIO;
                }
                found++;
        }
 
        return 0;
}
 
void
cleanup_module(void)
{
        int this_dev;
 
        for (this_dev = 0; this_dev < MAX_AC32_CARDS; this_dev++) {
                struct device *dev = &dev_ac32[this_dev];
                if (dev->priv != NULL) {
                        kfree(dev->priv);
                        dev->priv = NULL;
                        /* Someday free_irq + irq2dev may be in ac_close_card() */
                        free_irq(dev->irq, NULL);
                        irq2dev_map[dev->irq] = NULL;
                        release_region(dev->base_addr, AC_IO_EXTENT);
                        unregister_netdev(dev);
                }
        }
}
#endif /* MODULE */
 
/*
 * Local variables:
 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c ac3200.c"
 *  version-control: t
 *  kept-new-versions: 5
 *  tab-width: 4
 * End:
 */

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [net/] [ac3200.c] - Blame information for rev 1777

Line No.	Rev	Author	Line
1	1626	jcastillo	`/* ac3200.c: A driver for the Ansel Communications EISA ethernet adaptor. */`
2			`/*`
3			`Written 1993, 1994 by Donald Becker.`
4			`Copyright 1993 United States Government as represented by the Director,`
5			`National Security Agency. This software may only be used and distributed`
6			`according to the terms of the GNU Public License as modified by SRC,`
7			`incorporated herein by reference.`
8
9			`The author may be reached as becker@cesdis.gsfc.nasa.gov, or`
10			`C/O Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771`
11
12			`This is driver for the Ansel Communications Model 3200 EISA Ethernet LAN`
13			`Adapter. The programming information is from the users manual, as related`
14			`by glee@ardnassak.math.clemson.edu.`
15			`*/`
16
17			`static const char *version =`
18			`"ac3200.c:v1.01 7/1/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";`
19
20			`#include <linux/module.h>`
21
22			`#include <linux/kernel.h>`
23			`#include <linux/sched.h>`
24			`#include <linux/errno.h>`
25			`#include <linux/string.h>`
26			`#include <linux/netdevice.h>`
27			`#include <linux/etherdevice.h>`
28
29			`#include <asm/system.h>`
30			`#include <asm/io.h>`
31
32			`#include "8390.h"`
33
34			`/* Offsets from the base address. */`
35			`#define AC_NIC_BASE 0x00`
36			`#define AC_SA_PROM 0x16 /* The station address PROM. */`
37			`#define AC_ADDR0 0x00 /* Prefix station address values. */`
38			`#define AC_ADDR1 0x40 /* !!!!These are just guesses!!!! */`
39			`#define AC_ADDR2 0x90`
40			`#define AC_ID_PORT 0xC80`
41			`#define AC_EISA_ID 0x0110d305`
42			`#define AC_RESET_PORT 0xC84`
43			`#define AC_RESET 0x00`
44			`#define AC_ENABLE 0x01`
45			`#define AC_CONFIG 0xC90 /* The configuration port. */`
46
47			`#define AC_IO_EXTENT 0x10 /* IS THIS REALLY TRUE ??? */`
48			`/* Actually accessed is:`
49			`* AC_NIC_BASE (0-15)`
50			`* AC_SA_PROM (0-5)`
51			`* AC_ID_PORT (0-3)`
52			`* AC_RESET_PORT`
53			`* AC_CONFIG`
54			`*/`
55
56			`/* Decoding of the configuration register. */`
57			`static unsigned char config2irqmap[8] = {15, 12, 11, 10, 9, 7, 5, 3};`
58			`static int addrmap[8] =`
59			`{0xFF0000, 0xFE0000, 0xFD0000, 0xFFF0000, 0xFFE0000, 0xFFC0000, 0xD0000, 0 };`
60			`static const char *port_name[4] = { "10baseT", "invalid", "AUI", "10base2"};`
61
62			`#define config2irq(configval) config2irqmap[((configval) >> 3) & 7]`
63			`#define config2mem(configval) addrmap[(configval) & 7]`
64			`#define config2name(configval) port_name[((configval) >> 6) & 3]`
65
66			`/* First and last 8390 pages. */`
67			`#define AC_START_PG 0x00 /* First page of 8390 TX buffer */`
68			`#define AC_STOP_PG 0x80 /* Last page +1 of the 8390 RX ring */`
69
70			`int ac3200_probe(struct device *dev);`
71			`static int ac_probe1(int ioaddr, struct device *dev);`
72
73			`static int ac_open(struct device *dev);`
74			`static void ac_reset_8390(struct device *dev);`
75			`static void ac_block_input(struct device *dev, int count,`
76			`struct sk_buff *skb, int ring_offset);`
77			`static void ac_block_output(struct device *dev, const int count,`
78			`const unsigned char *buf, const int start_page);`
79			`static void ac_get_8390_hdr(struct device dev, struct e8390_pkt_hdr hdr,`
80			`int ring_page);`
81
82			`static int ac_close_card(struct device *dev);`
83
84
85			`/* Probe for the AC3200.`
86
87			`The AC3200 can be identified by either the EISA configuration registers,`
88			`or the unique value in the station address PROM.`
89			`*/`
90
91			`int ac3200_probe(struct device *dev)`
92			`{`
93			`unsigned short ioaddr = dev->base_addr;`
94
95			`if (ioaddr > 0x1ff) /* Check a single specified location. */`
96			`return ac_probe1(ioaddr, dev);`
97			`else if (ioaddr > 0) /* Don't probe at all. */`
98			`return ENXIO;`
99
100			`/* If you have a pre 0.99pl15 machine you should delete this line. */`
101			`if ( ! EISA_bus)`
102			`return ENXIO;`
103
104			`for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {`
105			`if (check_region(ioaddr, AC_IO_EXTENT))`
106			`continue;`
107			`if (ac_probe1(ioaddr, dev) == 0)`
108			`return 0;`
109			`}`
110
111			`return ENODEV;`
112			`}`
113
114			`static int ac_probe1(int ioaddr, struct device *dev)`
115			`{`
116			`int i;`
117
118			`#ifndef final_version`
119			`printk("AC3200 ethercard probe at %#3x:", ioaddr);`
120
121			`for(i = 0; i < 6; i++)`
122			`printk(" %02x", inb(ioaddr + AC_SA_PROM + i));`
123			`#endif`
124
125			`/* !!!!The values of AC_ADDRn (see above) should be corrected when we`
126			`find out the correct station address prefix!!!! */`
127			`if (inb(ioaddr + AC_SA_PROM + 0) != AC_ADDR0`
128			`\|\| inb(ioaddr + AC_SA_PROM + 1) != AC_ADDR1`
129			`\|\| inb(ioaddr + AC_SA_PROM + 2) != AC_ADDR2 ) {`
130			`#ifndef final_version`
131			`printk(" not found (invalid prefix).\n");`
132			`#endif`
133			`return ENODEV;`
134			`}`
135
136			`/* The correct probe method is to check the EISA ID. */`
137			`for (i = 0; i < 4; i++)`
138			`if (inl(ioaddr + AC_ID_PORT) != AC_EISA_ID) {`
139			`printk("EISA ID mismatch, %8x vs %8x.\n",`
140			`inl(ioaddr + AC_ID_PORT), AC_EISA_ID);`
141			`return ENODEV;`
142			`}`
143
144
145			`/* We should have a "dev" from Space.c or the static module table. */`
146			`if (dev == NULL) {`
147			`printk("ac3200.c: Passed a NULL device.\n");`
148			`dev = init_etherdev(0, 0);`
149			`}`
150
151			`for(i = 0; i < ETHER_ADDR_LEN; i++)`
152			`dev->dev_addr[i] = inb(ioaddr + AC_SA_PROM + i);`
153
154			`#ifndef final_version`
155			`printk("\nAC3200 ethercard configuration register is %#02x,"`
156			`" EISA ID %02x %02x %02x %02x.\n", inb(ioaddr + AC_CONFIG),`
157			`inb(ioaddr + AC_ID_PORT + 0), inb(ioaddr + AC_ID_PORT + 1),`
158			`inb(ioaddr + AC_ID_PORT + 2), inb(ioaddr + AC_ID_PORT + 3));`
159			`#endif`
160
161			`/* Assign and allocate the interrupt now. */`
162			`if (dev->irq == 0)`
163			`dev->irq = config2irq(inb(ioaddr + AC_CONFIG));`
164			`else if (dev->irq == 2)`
165			`dev->irq = 9;`
166
167			`if (request_irq(dev->irq, ei_interrupt, 0, "ac3200", NULL)) {`
168			`printk (" unable to get IRQ %d.\n", dev->irq);`
169			`return EAGAIN;`
170			`}`
171
172			`/* Allocate dev->priv and fill in 8390 specific dev fields. */`
173			`if (ethdev_init(dev)) {`
174			`printk (" unable to allocate memory for dev->priv.\n");`
175			`free_irq(dev->irq, NULL);`
176			`return -ENOMEM;`
177			`}`
178
179			`request_region(ioaddr, AC_IO_EXTENT, "ac3200");`
180
181			`dev->base_addr = ioaddr;`
182
183			`#ifdef notyet`
184			`if (dev->mem_start) { /* Override the value from the board. */`
185			`for (i = 0; i < 7; i++)`
186			`if (addrmap[i] == dev->mem_start)`
187			`break;`
188			`if (i >= 7)`
189			`i = 0;`
190			`outb((inb(ioaddr + AC_CONFIG) & ~7) \| i, ioaddr + AC_CONFIG);`
191			`}`
192			`#endif`
193
194			`dev->if_port = inb(ioaddr + AC_CONFIG) >> 6;`
195			`dev->mem_start = config2mem(inb(ioaddr + AC_CONFIG));`
196			`dev->rmem_start = dev->mem_start + TX_PAGES*256;`
197			`dev->mem_end = dev->rmem_end = dev->mem_start`
198			`+ (AC_STOP_PG - AC_START_PG)*256;`
199
200			`ei_status.name = "AC3200";`
201			`ei_status.tx_start_page = AC_START_PG;`
202			`ei_status.rx_start_page = AC_START_PG + TX_PAGES;`
203			`ei_status.stop_page = AC_STOP_PG;`
204			`ei_status.word16 = 1;`
205
206			`printk("\n%s: AC3200 at %#x, IRQ %d, %s port, shared memory %#lx-%#lx.\n",`
207			`dev->name, ioaddr, dev->irq, port_name[dev->if_port],`
208			`dev->mem_start, dev->mem_end-1);`
209
210			`if (ei_debug > 0)`
211			`printk(version);`
212
213			`ei_status.reset_8390 = &ac_reset_8390;`
214			`ei_status.block_input = &ac_block_input;`
215			`ei_status.block_output = &ac_block_output;`
216			`ei_status.get_8390_hdr = &ac_get_8390_hdr;`
217
218			`dev->open = &ac_open;`
219			`dev->stop = &ac_close_card;`
220			`NS8390_init(dev, 0);`
221			`return 0;`
222			`}`
223
224			`static int ac_open(struct device *dev)`
225			`{`
226			`#ifdef notyet`
227			`/* Someday we may enable the IRQ and shared memory here. */`
228			`int ioaddr = dev->base_addr;`
229
230			`if (request_irq(dev->irq, ei_interrupt, 0, "ac3200", NULL))`
231			`return -EAGAIN;`
232			`#endif`
233
234			`ei_open(dev);`
235
236			`MOD_INC_USE_COUNT;`
237
238			`return 0;`
239			`}`
240
241			`static void ac_reset_8390(struct device *dev)`
242			`{`
243			`ushort ioaddr = dev->base_addr;`
244
245			`outb(AC_RESET, ioaddr + AC_RESET_PORT);`
246			`if (ei_debug > 1) printk("resetting AC3200, t=%ld...", jiffies);`
247
248			`ei_status.txing = 0;`
249			`outb(AC_ENABLE, ioaddr + AC_RESET_PORT);`
250			`if (ei_debug > 1) printk("reset done\n");`
251
252			`return;`
253			`}`
254
255			`/* Grab the 8390 specific header. Similar to the block_input routine, but`
256			`we don't need to be concerned with ring wrap as the header will be at`
257			`the start of a page, so we optimize accordingly. */`
258
259			`static void`
260			`ac_get_8390_hdr(struct device dev, struct e8390_pkt_hdr hdr, int ring_page)`
261			`{`
262			`unsigned long hdr_start = dev->mem_start + ((ring_page - AC_START_PG)<<8);`
263			`memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));`
264			`}`
265
266			`/* Block input and output are easy on shared memory ethercards, the only`
267			`complication is when the ring buffer wraps. */`
268
269			`static void ac_block_input(struct device dev, int count, struct sk_buff skb,`
270			`int ring_offset)`
271			`{`
272			`unsigned long xfer_start = dev->mem_start + ring_offset - (AC_START_PG<<8);`
273
274			`if (xfer_start + count > dev->rmem_end) {`
275			`/* We must wrap the input move. */`
276			`int semi_count = dev->rmem_end - xfer_start;`
277			`memcpy_fromio(skb->data, xfer_start, semi_count);`
278			`count -= semi_count;`
279			`memcpy_fromio(skb->data + semi_count, dev->rmem_start, count);`
280			`} else {`
281			`/* Packet is in one chunk -- we can copy + cksum. */`
282			`eth_io_copy_and_sum(skb, xfer_start, count, 0);`
283			`}`
284			`}`
285
286			`static void ac_block_output(struct device *dev, int count,`
287			`const unsigned char *buf, int start_page)`
288			`{`
289			`unsigned long shmem = dev->mem_start + ((start_page - AC_START_PG)<<8);`
290
291			`memcpy_toio(shmem, buf, count);`
292			`}`
293
294			`static int ac_close_card(struct device *dev)`
295			`{`
296			`dev->start = 0;`
297			`dev->tbusy = 1;`
298
299			`if (ei_debug > 1)`
300			`printk("%s: Shutting down ethercard.\n", dev->name);`
301
302			`#ifdef notyet`
303			`/* We should someday disable shared memory and interrupts. */`
304			`outb(0x00, ioaddr + 6); /* Disable interrupts. */`
305			`free_irq(dev->irq, NULL);`
306			`irq2dev_map[dev->irq] = 0;`
307			`#endif`
308
309			`ei_close(dev);`
310
311			`MOD_DEC_USE_COUNT;`
312
313			`return 0;`
314			`}`
315
316			`#ifdef MODULE`
317			`#define MAX_AC32_CARDS 4 /* Max number of AC32 cards per module */`
318			`#define NAMELEN 8 /* # of chars for storing dev->name */`
319			`static char namelist[NAMELEN * MAX_AC32_CARDS] = { 0, };`
320			`static struct device dev_ac32[MAX_AC32_CARDS] = {`
321			`{`
322			`NULL, /* assign a chunk of namelist[] below */`
323			`0, 0, 0, 0,`
324			`0, 0,`
325			`0, 0, 0, NULL, NULL`
326			`},`
327			`};`
328
329			`static int io[MAX_AC32_CARDS] = { 0, };`
330			`static int irq[MAX_AC32_CARDS] = { 0, };`
331			`static int mem[MAX_AC32_CARDS] = { 0, };`
332
333			`int`
334			`init_module(void)`
335			`{`
336			`int this_dev, found = 0;`
337
338			`for (this_dev = 0; this_dev < MAX_AC32_CARDS; this_dev++) {`
339			`struct device *dev = &dev_ac32[this_dev];`
340			`dev->name = namelist+(NAMELEN*this_dev);`
341			`dev->irq = irq[this_dev];`
342			`dev->base_addr = io[this_dev];`
343			`dev->mem_start = mem[this_dev]; /* Currently ignored by driver */`
344			`dev->init = ac3200_probe;`
345			`/* Default is to only install one card. */`
346			`if (io[this_dev] == 0 && this_dev != 0) break;`
347			`if (register_netdev(dev) != 0) {`
348			`printk(KERN_WARNING "ac3200.c: No ac3200 card found (i/o = 0x%x).\n", io[this_dev]);`
349			`if (found != 0) return 0; /* Got at least one. */`
350			`return -ENXIO;`
351			`}`
352			`found++;`
353			`}`
354
355			`return 0;`
356			`}`
357
358			`void`
359			`cleanup_module(void)`
360			`{`
361			`int this_dev;`
362
363			`for (this_dev = 0; this_dev < MAX_AC32_CARDS; this_dev++) {`
364			`struct device *dev = &dev_ac32[this_dev];`
365			`if (dev->priv != NULL) {`
366			`kfree(dev->priv);`
367			`dev->priv = NULL;`
368			`/* Someday free_irq + irq2dev may be in ac_close_card() */`
369			`free_irq(dev->irq, NULL);`
370			`irq2dev_map[dev->irq] = NULL;`
371			`release_region(dev->base_addr, AC_IO_EXTENT);`
372			`unregister_netdev(dev);`
373			`}`
374			`}`
375			`}`
376			`#endif /* MODULE */`
377
378			`/*`
379			`* Local variables:`
380			`* compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c ac3200.c"`
381			`* version-control: t`
382			`* kept-new-versions: 5`
383			`* tab-width: 4`
384			`* End:`
385			`*/`