1 /* 82596.c: A generic 82596 ethernet driver for linux. */
4 Written 1994 by Mark Evans.
5 This driver is for the Apricot 82596 bus-master interface
7 Modularised 12/94 Mark Evans
10 Modified to support the 82596 ethernet chips on 680x0 VME boards.
11 by Richard Hirst <richard@sleepie.demon.co.uk>
14 980825: Changed to receive directly in to sk_buffs which are
15 allocated at open() time. Eliminates copy on incoming frames
16 (small ones are still copied). Shared data now held in a
17 non-cached page, so we can run on 68060 in copyback mode.
20 * look at deferring rx frames rather than discarding (as per tulip)
21 * handle tx ring full as per tulip
22 * performace test to tune rx_copybreak
24 Most of my modifications relate to the braindead big-endian
25 implementation by Intel. When the i596 is operating in
26 'big-endian' mode, it thinks a 32 bit value of 0x12345678
27 should be stored as 0x56781234. This is a real pain, when
28 you have linked lists which are shared by the 680x0 and the
32 Written 1993 by Donald Becker.
33 Copyright 1993 United States Government as represented by the Director,
34 National Security Agency. This software may only be used and distributed
35 according to the terms of the GNU General Public License as modified by SRC,
36 incorporated herein by reference.
38 The author may be reached as becker@scyld.com, or C/O
39 Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
43 #include <linux/module.h>
44 #include <linux/kernel.h>
45 #include <linux/string.h>
46 #include <linux/errno.h>
47 #include <linux/ioport.h>
48 #include <linux/slab.h>
49 #include <linux/interrupt.h>
50 #include <linux/delay.h>
51 #include <linux/netdevice.h>
52 #include <linux/etherdevice.h>
53 #include <linux/skbuff.h>
54 #include <linux/init.h>
55 #include <linux/bitops.h>
59 #include <asm/pgtable.h>
60 #include <asm/cacheflush.h>
62 static char version
[] __initdata
=
63 "82596.c $Revision: 1.5 $\n";
65 #define DRV_NAME "82596"
70 #define DEB_INIT 0x0001
71 #define DEB_PROBE 0x0002
72 #define DEB_SERIOUS 0x0004
73 #define DEB_ERRORS 0x0008
74 #define DEB_MULTI 0x0010
75 #define DEB_TDR 0x0020
76 #define DEB_OPEN 0x0040
77 #define DEB_RESET 0x0080
78 #define DEB_ADDCMD 0x0100
79 #define DEB_STATUS 0x0200
80 #define DEB_STARTTX 0x0400
81 #define DEB_RXADDR 0x0800
82 #define DEB_TXADDR 0x1000
83 #define DEB_RXFRAME 0x2000
84 #define DEB_INTS 0x4000
85 #define DEB_STRUCT 0x8000
86 #define DEB_ANY 0xffff
89 #define DEB(x,y) if (i596_debug & (x)) y
92 #if defined(CONFIG_MVME16x_NET) || defined(CONFIG_MVME16x_NET_MODULE)
93 #define ENABLE_MVME16x_NET
95 #if defined(CONFIG_BVME6000_NET) || defined(CONFIG_BVME6000_NET_MODULE)
96 #define ENABLE_BVME6000_NET
98 #if defined(CONFIG_APRICOT) || defined(CONFIG_APRICOT_MODULE)
99 #define ENABLE_APRICOT
102 #ifdef ENABLE_MVME16x_NET
103 #include <asm/mvme16xhw.h>
105 #ifdef ENABLE_BVME6000_NET
106 #include <asm/bvme6000hw.h>
110 * Define various macros for Channel Attention, word swapping etc., dependent
111 * on architecture. MVME and BVME are 680x0 based, otherwise it is Intel.
115 #define WSWAPrfd(x) ((struct i596_rfd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
116 #define WSWAPrbd(x) ((struct i596_rbd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
117 #define WSWAPiscp(x) ((struct i596_iscp *)(((u32)(x)<<16) | ((((u32)(x)))>>16)))
118 #define WSWAPscb(x) ((struct i596_scb *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
119 #define WSWAPcmd(x) ((struct i596_cmd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
120 #define WSWAPtbd(x) ((struct i596_tbd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
121 #define WSWAPchar(x) ((char *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
122 #define ISCP_BUSY 0x00010000
123 #define MACH_IS_APRICOT 0
125 #define WSWAPrfd(x) ((struct i596_rfd *)(x))
126 #define WSWAPrbd(x) ((struct i596_rbd *)(x))
127 #define WSWAPiscp(x) ((struct i596_iscp *)(x))
128 #define WSWAPscb(x) ((struct i596_scb *)(x))
129 #define WSWAPcmd(x) ((struct i596_cmd *)(x))
130 #define WSWAPtbd(x) ((struct i596_tbd *)(x))
131 #define WSWAPchar(x) ((char *)(x))
132 #define ISCP_BUSY 0x0001
133 #define MACH_IS_APRICOT 1
137 * The MPU_PORT command allows direct access to the 82596. With PORT access
138 * the following commands are available (p5-18). The 32-bit port command
139 * must be word-swapped with the most significant word written first.
140 * This only applies to VME boards.
142 #define PORT_RESET 0x00 /* reset 82596 */
143 #define PORT_SELFTEST 0x01 /* selftest */
144 #define PORT_ALTSCP 0x02 /* alternate SCB address */
145 #define PORT_ALTDUMP 0x03 /* Alternate DUMP address */
147 static int i596_debug
= (DEB_SERIOUS
|DEB_PROBE
);
149 MODULE_AUTHOR("Richard Hirst");
150 MODULE_DESCRIPTION("i82596 driver");
151 MODULE_LICENSE("GPL");
153 module_param(i596_debug
, int, 0);
154 MODULE_PARM_DESC(i596_debug
, "i82596 debug mask");
157 /* Copy frames shorter than rx_copybreak, otherwise pass on up in
158 * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha).
160 static int rx_copybreak
= 100;
162 #define PKT_BUF_SZ 1536
163 #define MAX_MC_CNT 64
165 #define I596_TOTAL_SIZE 17
167 #define I596_NULL ((void *)0xffffffff)
169 #define CMD_EOL 0x8000 /* The last command of the list, stop. */
170 #define CMD_SUSP 0x4000 /* Suspend after doing cmd. */
171 #define CMD_INTR 0x2000 /* Interrupt after doing cmd. */
173 #define CMD_FLEX 0x0008 /* Enable flexible memory model */
176 CmdNOp
= 0, CmdSASetup
= 1, CmdConfigure
= 2, CmdMulticastList
= 3,
177 CmdTx
= 4, CmdTDR
= 5, CmdDump
= 6, CmdDiagnose
= 7
180 #define STAT_C 0x8000 /* Set to 0 after execution */
181 #define STAT_B 0x4000 /* Command being executed */
182 #define STAT_OK 0x2000 /* Command executed ok */
183 #define STAT_A 0x1000 /* Command aborted */
185 #define CUC_START 0x0100
186 #define CUC_RESUME 0x0200
187 #define CUC_SUSPEND 0x0300
188 #define CUC_ABORT 0x0400
189 #define RX_START 0x0010
190 #define RX_RESUME 0x0020
191 #define RX_SUSPEND 0x0030
192 #define RX_ABORT 0x0040
198 unsigned short porthi
;
199 unsigned short portlo
;
204 #define SIZE_MASK 0x3fff
209 struct i596_tbd
*next
;
213 /* The command structure has two 'next' pointers; v_next is the address of
214 * the next command as seen by the CPU, b_next is the address of the next
215 * command as seen by the 82596. The b_next pointer, as used by the 82596
216 * always references the status field of the next command, rather than the
217 * v_next field, because the 82596 is unaware of v_next. It may seem more
218 * logical to put v_next at the end of the structure, but we cannot do that
219 * because the 82596 expects other fields to be there, depending on command
224 struct i596_cmd
*v_next
; /* Address from CPUs viewpoint */
225 unsigned short status
;
226 unsigned short command
;
227 struct i596_cmd
*b_next
; /* Address from i596 viewpoint */
232 struct i596_tbd
*tbd
;
235 struct sk_buff
*skb
; /* So we can free it after tx */
240 unsigned short status
;
247 char mc_addrs
[MAX_MC_CNT
*6];
257 char i596_config
[16];
263 struct i596_rfd
*b_next
; /* Address from i596 viewpoint */
264 struct i596_rbd
*rbd
;
265 unsigned short count
;
267 struct i596_rfd
*v_next
; /* Address from CPUs viewpoint */
268 struct i596_rfd
*v_prev
;
272 unsigned short count
;
273 unsigned short zero1
;
274 struct i596_rbd
*b_next
;
275 unsigned char *b_data
; /* Address from i596 viewpoint */
277 unsigned short zero2
;
279 struct i596_rbd
*v_next
;
280 struct i596_rbd
*b_addr
; /* This rbd addr from i596 view */
281 unsigned char *v_data
; /* Address from CPUs viewpoint */
284 #define TX_RING_SIZE 64
285 #define RX_RING_SIZE 16
288 unsigned short status
;
289 unsigned short command
;
290 struct i596_cmd
*cmd
;
291 struct i596_rfd
*rfd
;
292 unsigned long crc_err
;
293 unsigned long align_err
;
294 unsigned long resource_err
;
295 unsigned long over_err
;
296 unsigned long rcvdt_err
;
297 unsigned long short_err
;
299 unsigned short t_off
;
304 struct i596_scb
*scb
;
308 unsigned long sysbus
;
310 struct i596_iscp
*iscp
;
313 struct i596_private
{
314 volatile struct i596_scp scp
;
315 volatile struct i596_iscp iscp
;
316 volatile struct i596_scb scb
;
317 struct sa_cmd sa_cmd
;
318 struct cf_cmd cf_cmd
;
319 struct tdr_cmd tdr_cmd
;
320 struct mc_cmd mc_cmd
;
322 int last_restart
__attribute__((aligned(4)));
323 struct i596_rfd
*rfd_head
;
324 struct i596_rbd
*rbd_head
;
325 struct i596_cmd
*cmd_tail
;
326 struct i596_cmd
*cmd_head
;
328 unsigned long last_cmd
;
329 struct i596_rfd rfds
[RX_RING_SIZE
];
330 struct i596_rbd rbds
[RX_RING_SIZE
];
331 struct tx_cmd tx_cmds
[TX_RING_SIZE
];
332 struct i596_tbd tbds
[TX_RING_SIZE
];
337 static char init_setup
[] =
339 0x8E, /* length, prefetch on */
340 0xC8, /* fifo to 8, monitor off */
342 0xc0, /* don't save bad frames */
344 0x80, /* don't save bad frames */
346 0x2E, /* No source address insertion, 8 byte preamble */
347 0x00, /* priority and backoff defaults */
348 0x60, /* interframe spacing */
349 0x00, /* slot time LSB */
350 0xf2, /* slot time and retries */
351 0x00, /* promiscuous mode */
352 0x00, /* collision detect */
353 0x40, /* minimum frame length */
356 0x7f /* *multi IA */ };
358 static int i596_open(struct net_device
*dev
);
359 static int i596_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
360 static irqreturn_t
i596_interrupt(int irq
, void *dev_id
);
361 static int i596_close(struct net_device
*dev
);
362 static void i596_add_cmd(struct net_device
*dev
, struct i596_cmd
*cmd
);
363 static void i596_tx_timeout (struct net_device
*dev
);
364 static void print_eth(unsigned char *buf
, char *str
);
365 static void set_multicast_list(struct net_device
*dev
);
367 static int rx_ring_size
= RX_RING_SIZE
;
368 static int ticks_limit
= 25;
369 static int max_cmd_backlog
= TX_RING_SIZE
-1;
372 static inline void CA(struct net_device
*dev
)
374 #ifdef ENABLE_MVME16x_NET
375 if (MACH_IS_MVME16x
) {
376 ((struct i596_reg
*) dev
->base_addr
)->ca
= 1;
379 #ifdef ENABLE_BVME6000_NET
380 if (MACH_IS_BVME6000
) {
383 i
= *(volatile u32
*) (dev
->base_addr
);
386 #ifdef ENABLE_APRICOT
387 if (MACH_IS_APRICOT
) {
388 outw(0, (short) (dev
->base_addr
) + 4);
394 static inline void MPU_PORT(struct net_device
*dev
, int c
, volatile void *x
)
396 #ifdef ENABLE_MVME16x_NET
397 if (MACH_IS_MVME16x
) {
398 struct i596_reg
*p
= (struct i596_reg
*) (dev
->base_addr
);
399 p
->porthi
= ((c
) | (u32
) (x
)) & 0xffff;
400 p
->portlo
= ((c
) | (u32
) (x
)) >> 16;
403 #ifdef ENABLE_BVME6000_NET
404 if (MACH_IS_BVME6000
) {
405 u32 v
= (u32
) (c
) | (u32
) (x
);
406 v
= ((u32
) (v
) << 16) | ((u32
) (v
) >> 16);
407 *(volatile u32
*) dev
->base_addr
= v
;
409 *(volatile u32
*) dev
->base_addr
= v
;
415 static inline int wait_istat(struct net_device
*dev
, struct i596_private
*lp
, int delcnt
, char *str
)
417 while (--delcnt
&& lp
->iscp
.stat
)
420 printk(KERN_ERR
"%s: %s, status %4.4x, cmd %4.4x.\n",
421 dev
->name
, str
, lp
->scb
.status
, lp
->scb
.command
);
429 static inline int wait_cmd(struct net_device
*dev
, struct i596_private
*lp
, int delcnt
, char *str
)
431 while (--delcnt
&& lp
->scb
.command
)
434 printk(KERN_ERR
"%s: %s, status %4.4x, cmd %4.4x.\n",
435 dev
->name
, str
, lp
->scb
.status
, lp
->scb
.command
);
443 static inline int wait_cfg(struct net_device
*dev
, struct i596_cmd
*cmd
, int delcnt
, char *str
)
445 volatile struct i596_cmd
*c
= cmd
;
447 while (--delcnt
&& c
->command
)
450 printk(KERN_ERR
"%s: %s.\n", dev
->name
, str
);
458 static void i596_display_data(struct net_device
*dev
)
460 struct i596_private
*lp
= dev
->ml_priv
;
461 struct i596_cmd
*cmd
;
462 struct i596_rfd
*rfd
;
463 struct i596_rbd
*rbd
;
465 printk(KERN_ERR
"lp and scp at %p, .sysbus = %08lx, .iscp = %p\n",
466 &lp
->scp
, lp
->scp
.sysbus
, lp
->scp
.iscp
);
467 printk(KERN_ERR
"iscp at %p, iscp.stat = %08lx, .scb = %p\n",
468 &lp
->iscp
, lp
->iscp
.stat
, lp
->iscp
.scb
);
469 printk(KERN_ERR
"scb at %p, scb.status = %04x, .command = %04x,"
470 " .cmd = %p, .rfd = %p\n",
471 &lp
->scb
, lp
->scb
.status
, lp
->scb
.command
,
472 lp
->scb
.cmd
, lp
->scb
.rfd
);
473 printk(KERN_ERR
" errors: crc %lx, align %lx, resource %lx,"
474 " over %lx, rcvdt %lx, short %lx\n",
475 lp
->scb
.crc_err
, lp
->scb
.align_err
, lp
->scb
.resource_err
,
476 lp
->scb
.over_err
, lp
->scb
.rcvdt_err
, lp
->scb
.short_err
);
478 while (cmd
!= I596_NULL
) {
479 printk(KERN_ERR
"cmd at %p, .status = %04x, .command = %04x, .b_next = %p\n",
480 cmd
, cmd
->status
, cmd
->command
, cmd
->b_next
);
484 printk(KERN_ERR
"rfd_head = %p\n", rfd
);
486 printk(KERN_ERR
" %p .stat %04x, .cmd %04x, b_next %p, rbd %p,"
488 rfd
, rfd
->stat
, rfd
->cmd
, rfd
->b_next
, rfd
->rbd
,
491 } while (rfd
!= lp
->rfd_head
);
493 printk(KERN_ERR
"rbd_head = %p\n", rbd
);
495 printk(KERN_ERR
" %p .count %04x, b_next %p, b_data %p, size %04x\n",
496 rbd
, rbd
->count
, rbd
->b_next
, rbd
->b_data
, rbd
->size
);
498 } while (rbd
!= lp
->rbd_head
);
502 #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
503 static irqreturn_t
i596_error(int irq
, void *dev_id
)
505 struct net_device
*dev
= dev_id
;
506 #ifdef ENABLE_MVME16x_NET
507 if (MACH_IS_MVME16x
) {
508 volatile unsigned char *pcc2
= (unsigned char *) 0xfff42000;
514 #ifdef ENABLE_BVME6000_NET
515 if (MACH_IS_BVME6000
) {
516 volatile unsigned char *ethirq
= (unsigned char *) BVME_ETHIRQ_REG
;
522 printk(KERN_ERR
"%s: Error interrupt\n", dev
->name
);
523 i596_display_data(dev
);
528 static inline void init_rx_bufs(struct net_device
*dev
)
530 struct i596_private
*lp
= dev
->ml_priv
;
532 struct i596_rfd
*rfd
;
533 struct i596_rbd
*rbd
;
535 /* First build the Receive Buffer Descriptor List */
537 for (i
= 0, rbd
= lp
->rbds
; i
< rx_ring_size
; i
++, rbd
++) {
538 struct sk_buff
*skb
= dev_alloc_skb(PKT_BUF_SZ
);
541 panic("82596: alloc_skb() failed");
544 rbd
->b_next
= WSWAPrbd(virt_to_bus(rbd
+1));
545 rbd
->b_addr
= WSWAPrbd(virt_to_bus(rbd
));
547 rbd
->v_data
= skb
->data
;
548 rbd
->b_data
= WSWAPchar(virt_to_bus(skb
->data
));
549 rbd
->size
= PKT_BUF_SZ
;
551 cache_clear(virt_to_phys(skb
->data
), PKT_BUF_SZ
);
554 lp
->rbd_head
= lp
->rbds
;
555 rbd
= lp
->rbds
+ rx_ring_size
- 1;
556 rbd
->v_next
= lp
->rbds
;
557 rbd
->b_next
= WSWAPrbd(virt_to_bus(lp
->rbds
));
559 /* Now build the Receive Frame Descriptor List */
561 for (i
= 0, rfd
= lp
->rfds
; i
< rx_ring_size
; i
++, rfd
++) {
562 rfd
->rbd
= I596_NULL
;
565 rfd
->b_next
= WSWAPrfd(virt_to_bus(rfd
+1));
568 lp
->rfd_head
= lp
->rfds
;
569 lp
->scb
.rfd
= WSWAPrfd(virt_to_bus(lp
->rfds
));
571 rfd
->rbd
= lp
->rbd_head
;
572 rfd
->v_prev
= lp
->rfds
+ rx_ring_size
- 1;
573 rfd
= lp
->rfds
+ rx_ring_size
- 1;
574 rfd
->v_next
= lp
->rfds
;
575 rfd
->b_next
= WSWAPrfd(virt_to_bus(lp
->rfds
));
576 rfd
->cmd
= CMD_EOL
|CMD_FLEX
;
579 static inline void remove_rx_bufs(struct net_device
*dev
)
581 struct i596_private
*lp
= dev
->ml_priv
;
582 struct i596_rbd
*rbd
;
585 for (i
= 0, rbd
= lp
->rbds
; i
< rx_ring_size
; i
++, rbd
++) {
586 if (rbd
->skb
== NULL
)
588 dev_kfree_skb(rbd
->skb
);
593 static void rebuild_rx_bufs(struct net_device
*dev
)
595 struct i596_private
*lp
= dev
->ml_priv
;
598 /* Ensure rx frame/buffer descriptors are tidy */
600 for (i
= 0; i
< rx_ring_size
; i
++) {
601 lp
->rfds
[i
].rbd
= I596_NULL
;
602 lp
->rfds
[i
].cmd
= CMD_FLEX
;
604 lp
->rfds
[rx_ring_size
-1].cmd
= CMD_EOL
|CMD_FLEX
;
605 lp
->rfd_head
= lp
->rfds
;
606 lp
->scb
.rfd
= WSWAPrfd(virt_to_bus(lp
->rfds
));
607 lp
->rbd_head
= lp
->rbds
;
608 lp
->rfds
[0].rbd
= WSWAPrbd(virt_to_bus(lp
->rbds
));
612 static int init_i596_mem(struct net_device
*dev
)
614 struct i596_private
*lp
= dev
->ml_priv
;
615 #if !defined(ENABLE_MVME16x_NET) && !defined(ENABLE_BVME6000_NET) || defined(ENABLE_APRICOT)
616 short ioaddr
= dev
->base_addr
;
620 MPU_PORT(dev
, PORT_RESET
, NULL
);
622 udelay(100); /* Wait 100us - seems to help */
624 #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
625 #ifdef ENABLE_MVME16x_NET
626 if (MACH_IS_MVME16x
) {
627 volatile unsigned char *pcc2
= (unsigned char *) 0xfff42000;
629 /* Disable all ints for now */
632 /* Following disables snooping. Snooping is not required
633 * as we make appropriate use of non-cached pages for
634 * shared data, and cache_push/cache_clear.
639 #ifdef ENABLE_BVME6000_NET
640 if (MACH_IS_BVME6000
) {
641 volatile unsigned char *ethirq
= (unsigned char *) BVME_ETHIRQ_REG
;
647 /* change the scp address */
649 MPU_PORT(dev
, PORT_ALTSCP
, (void *)virt_to_bus((void *)&lp
->scp
));
651 #elif defined(ENABLE_APRICOT)
654 u32 scp
= virt_to_bus(&lp
->scp
);
656 /* change the scp address */
659 outb(4, ioaddr
+ 0xf);
660 outw(scp
| 2, ioaddr
);
661 outw(scp
>> 16, ioaddr
);
665 lp
->last_cmd
= jiffies
;
667 #ifdef ENABLE_MVME16x_NET
669 lp
->scp
.sysbus
= 0x00000054;
671 #ifdef ENABLE_BVME6000_NET
672 if (MACH_IS_BVME6000
)
673 lp
->scp
.sysbus
= 0x0000004c;
675 #ifdef ENABLE_APRICOT
677 lp
->scp
.sysbus
= 0x00440000;
680 lp
->scp
.iscp
= WSWAPiscp(virt_to_bus((void *)&lp
->iscp
));
681 lp
->iscp
.scb
= WSWAPscb(virt_to_bus((void *)&lp
->scb
));
682 lp
->iscp
.stat
= ISCP_BUSY
;
685 lp
->cmd_head
= lp
->scb
.cmd
= I596_NULL
;
687 #ifdef ENABLE_BVME6000_NET
688 if (MACH_IS_BVME6000
) {
689 lp
->scb
.t_on
= 7 * 25;
690 lp
->scb
.t_off
= 1 * 25;
694 DEB(DEB_INIT
,printk(KERN_DEBUG
"%s: starting i82596.\n", dev
->name
));
696 #if defined(ENABLE_APRICOT)
697 (void) inb(ioaddr
+ 0x10);
698 outb(4, ioaddr
+ 0xf);
702 if (wait_istat(dev
,lp
,1000,"initialization timed out"))
704 DEB(DEB_INIT
,printk(KERN_DEBUG
"%s: i82596 initialization successful\n", dev
->name
));
706 /* Ensure rx frame/buffer descriptors are tidy */
707 rebuild_rx_bufs(dev
);
710 #ifdef ENABLE_MVME16x_NET
711 if (MACH_IS_MVME16x
) {
712 volatile unsigned char *pcc2
= (unsigned char *) 0xfff42000;
714 /* Enable ints, etc. now */
715 pcc2
[0x2a] = 0x55; /* Edge sensitive */
719 #ifdef ENABLE_BVME6000_NET
720 if (MACH_IS_BVME6000
) {
721 volatile unsigned char *ethirq
= (unsigned char *) BVME_ETHIRQ_REG
;
728 DEB(DEB_INIT
,printk(KERN_DEBUG
"%s: queuing CmdConfigure\n", dev
->name
));
729 memcpy(lp
->cf_cmd
.i596_config
, init_setup
, 14);
730 lp
->cf_cmd
.cmd
.command
= CmdConfigure
;
731 i596_add_cmd(dev
, &lp
->cf_cmd
.cmd
);
733 DEB(DEB_INIT
,printk(KERN_DEBUG
"%s: queuing CmdSASetup\n", dev
->name
));
734 memcpy(lp
->sa_cmd
.eth_addr
, dev
->dev_addr
, 6);
735 lp
->sa_cmd
.cmd
.command
= CmdSASetup
;
736 i596_add_cmd(dev
, &lp
->sa_cmd
.cmd
);
738 DEB(DEB_INIT
,printk(KERN_DEBUG
"%s: queuing CmdTDR\n", dev
->name
));
739 lp
->tdr_cmd
.cmd
.command
= CmdTDR
;
740 i596_add_cmd(dev
, &lp
->tdr_cmd
.cmd
);
742 spin_lock_irqsave (&lp
->lock
, flags
);
744 if (wait_cmd(dev
,lp
,1000,"timed out waiting to issue RX_START")) {
745 spin_unlock_irqrestore (&lp
->lock
, flags
);
748 DEB(DEB_INIT
,printk(KERN_DEBUG
"%s: Issuing RX_START\n", dev
->name
));
749 lp
->scb
.command
= RX_START
;
752 spin_unlock_irqrestore (&lp
->lock
, flags
);
754 if (wait_cmd(dev
,lp
,1000,"RX_START not processed"))
756 DEB(DEB_INIT
,printk(KERN_DEBUG
"%s: Receive unit started OK\n", dev
->name
));
760 printk(KERN_CRIT
"%s: Failed to initialise 82596\n", dev
->name
);
761 MPU_PORT(dev
, PORT_RESET
, NULL
);
765 static inline int i596_rx(struct net_device
*dev
)
767 struct i596_private
*lp
= dev
->ml_priv
;
768 struct i596_rfd
*rfd
;
769 struct i596_rbd
*rbd
;
772 DEB(DEB_RXFRAME
,printk(KERN_DEBUG
"i596_rx(), rfd_head %p, rbd_head %p\n",
773 lp
->rfd_head
, lp
->rbd_head
));
775 rfd
= lp
->rfd_head
; /* Ref next frame to check */
777 while ((rfd
->stat
) & STAT_C
) { /* Loop while complete frames */
778 if (rfd
->rbd
== I596_NULL
)
780 else if (rfd
->rbd
== lp
->rbd_head
->b_addr
)
783 printk(KERN_CRIT
"%s: rbd chain broken!\n", dev
->name
);
787 DEB(DEB_RXFRAME
, printk(KERN_DEBUG
" rfd %p, rfd.rbd %p, rfd.stat %04x\n",
788 rfd
, rfd
->rbd
, rfd
->stat
));
790 if (rbd
!= I596_NULL
&& ((rfd
->stat
) & STAT_OK
)) {
792 int pkt_len
= rbd
->count
& 0x3fff;
793 struct sk_buff
*skb
= rbd
->skb
;
796 DEB(DEB_RXADDR
,print_eth(rbd
->v_data
, "received"));
799 /* Check if the packet is long enough to just accept
800 * without copying to a properly sized skbuff.
803 if (pkt_len
> rx_copybreak
) {
804 struct sk_buff
*newskb
;
806 /* Get fresh skbuff to replace filled one. */
807 newskb
= dev_alloc_skb(PKT_BUF_SZ
);
808 if (newskb
== NULL
) {
809 skb
= NULL
; /* drop pkt */
812 /* Pass up the skb already on the Rx ring. */
813 skb_put(skb
, pkt_len
);
817 rbd
->v_data
= newskb
->data
;
818 rbd
->b_data
= WSWAPchar(virt_to_bus(newskb
->data
));
820 cache_clear(virt_to_phys(newskb
->data
), PKT_BUF_SZ
);
824 skb
= dev_alloc_skb(pkt_len
+ 2);
827 /* XXX tulip.c can defer packets here!! */
828 printk(KERN_WARNING
"%s: i596_rx Memory squeeze, dropping packet.\n", dev
->name
);
829 dev
->stats
.rx_dropped
++;
833 /* 16 byte align the data fields */
835 memcpy(skb_put(skb
,pkt_len
), rbd
->v_data
, pkt_len
);
837 skb
->protocol
=eth_type_trans(skb
,dev
);
840 cache_clear(virt_to_phys(rbd
->skb
->data
),
844 dev
->stats
.rx_packets
++;
845 dev
->stats
.rx_bytes
+=pkt_len
;
849 DEB(DEB_ERRORS
, printk(KERN_DEBUG
"%s: Error, rfd.stat = 0x%04x\n",
850 dev
->name
, rfd
->stat
));
851 dev
->stats
.rx_errors
++;
852 if ((rfd
->stat
) & 0x0001)
853 dev
->stats
.collisions
++;
854 if ((rfd
->stat
) & 0x0080)
855 dev
->stats
.rx_length_errors
++;
856 if ((rfd
->stat
) & 0x0100)
857 dev
->stats
.rx_over_errors
++;
858 if ((rfd
->stat
) & 0x0200)
859 dev
->stats
.rx_fifo_errors
++;
860 if ((rfd
->stat
) & 0x0400)
861 dev
->stats
.rx_frame_errors
++;
862 if ((rfd
->stat
) & 0x0800)
863 dev
->stats
.rx_crc_errors
++;
864 if ((rfd
->stat
) & 0x1000)
865 dev
->stats
.rx_length_errors
++;
868 /* Clear the buffer descriptor count and EOF + F flags */
870 if (rbd
!= I596_NULL
&& (rbd
->count
& 0x4000)) {
872 lp
->rbd_head
= rbd
->v_next
;
875 /* Tidy the frame descriptor, marking it as end of list */
877 rfd
->rbd
= I596_NULL
;
879 rfd
->cmd
= CMD_EOL
|CMD_FLEX
;
882 /* Remove end-of-list from old end descriptor */
884 rfd
->v_prev
->cmd
= CMD_FLEX
;
886 /* Update record of next frame descriptor to process */
888 lp
->scb
.rfd
= rfd
->b_next
;
889 lp
->rfd_head
= rfd
->v_next
;
893 DEB(DEB_RXFRAME
,printk(KERN_DEBUG
"frames %d\n", frames
));
899 static void i596_cleanup_cmd(struct net_device
*dev
, struct i596_private
*lp
)
901 struct i596_cmd
*ptr
;
903 while (lp
->cmd_head
!= I596_NULL
) {
905 lp
->cmd_head
= ptr
->v_next
;
908 switch ((ptr
->command
) & 0x7) {
911 struct tx_cmd
*tx_cmd
= (struct tx_cmd
*) ptr
;
912 struct sk_buff
*skb
= tx_cmd
->skb
;
916 dev
->stats
.tx_errors
++;
917 dev
->stats
.tx_aborted_errors
++;
919 ptr
->v_next
= ptr
->b_next
= I596_NULL
;
920 tx_cmd
->cmd
.command
= 0; /* Mark as free */
924 ptr
->v_next
= ptr
->b_next
= I596_NULL
;
928 wait_cmd(dev
,lp
,100,"i596_cleanup_cmd timed out");
929 lp
->scb
.cmd
= I596_NULL
;
932 static void i596_reset(struct net_device
*dev
, struct i596_private
*lp
,
937 DEB(DEB_RESET
,printk(KERN_DEBUG
"i596_reset\n"));
939 spin_lock_irqsave (&lp
->lock
, flags
);
941 wait_cmd(dev
,lp
,100,"i596_reset timed out");
943 netif_stop_queue(dev
);
945 lp
->scb
.command
= CUC_ABORT
| RX_ABORT
;
948 /* wait for shutdown */
949 wait_cmd(dev
,lp
,1000,"i596_reset 2 timed out");
950 spin_unlock_irqrestore (&lp
->lock
, flags
);
952 i596_cleanup_cmd(dev
,lp
);
955 netif_start_queue(dev
);
959 static void i596_add_cmd(struct net_device
*dev
, struct i596_cmd
*cmd
)
961 struct i596_private
*lp
= dev
->ml_priv
;
962 int ioaddr
= dev
->base_addr
;
965 DEB(DEB_ADDCMD
,printk(KERN_DEBUG
"i596_add_cmd\n"));
968 cmd
->command
|= (CMD_EOL
| CMD_INTR
);
969 cmd
->v_next
= cmd
->b_next
= I596_NULL
;
971 spin_lock_irqsave (&lp
->lock
, flags
);
973 if (lp
->cmd_head
!= I596_NULL
) {
974 lp
->cmd_tail
->v_next
= cmd
;
975 lp
->cmd_tail
->b_next
= WSWAPcmd(virt_to_bus(&cmd
->status
));
978 wait_cmd(dev
,lp
,100,"i596_add_cmd timed out");
979 lp
->scb
.cmd
= WSWAPcmd(virt_to_bus(&cmd
->status
));
980 lp
->scb
.command
= CUC_START
;
986 spin_unlock_irqrestore (&lp
->lock
, flags
);
988 if (lp
->cmd_backlog
> max_cmd_backlog
) {
989 unsigned long tickssofar
= jiffies
- lp
->last_cmd
;
991 if (tickssofar
< ticks_limit
)
994 printk(KERN_NOTICE
"%s: command unit timed out, status resetting.\n", dev
->name
);
996 i596_reset(dev
, lp
, ioaddr
);
1000 static int i596_open(struct net_device
*dev
)
1004 DEB(DEB_OPEN
,printk(KERN_DEBUG
"%s: i596_open() irq %d.\n", dev
->name
, dev
->irq
));
1006 if (request_irq(dev
->irq
, i596_interrupt
, 0, "i82596", dev
)) {
1007 printk(KERN_ERR
"%s: IRQ %d not free\n", dev
->name
, dev
->irq
);
1010 #ifdef ENABLE_MVME16x_NET
1011 if (MACH_IS_MVME16x
) {
1012 if (request_irq(0x56, i596_error
, 0, "i82596_error", dev
))
1018 netif_start_queue(dev
);
1020 /* Initialize the 82596 memory */
1021 if (init_i596_mem(dev
)) {
1023 free_irq(dev
->irq
, dev
);
1029 static void i596_tx_timeout (struct net_device
*dev
)
1031 struct i596_private
*lp
= dev
->ml_priv
;
1032 int ioaddr
= dev
->base_addr
;
1034 /* Transmitter timeout, serious problems. */
1035 DEB(DEB_ERRORS
,printk(KERN_ERR
"%s: transmit timed out, status resetting.\n",
1038 dev
->stats
.tx_errors
++;
1040 /* Try to restart the adaptor */
1041 if (lp
->last_restart
== dev
->stats
.tx_packets
) {
1042 DEB(DEB_ERRORS
,printk(KERN_ERR
"Resetting board.\n"));
1043 /* Shutdown and restart */
1044 i596_reset (dev
, lp
, ioaddr
);
1046 /* Issue a channel attention signal */
1047 DEB(DEB_ERRORS
,printk(KERN_ERR
"Kicking board.\n"));
1048 lp
->scb
.command
= CUC_START
| RX_START
;
1050 lp
->last_restart
= dev
->stats
.tx_packets
;
1053 dev
->trans_start
= jiffies
;
1054 netif_wake_queue (dev
);
1058 static int i596_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
1060 struct i596_private
*lp
= dev
->ml_priv
;
1061 struct tx_cmd
*tx_cmd
;
1062 struct i596_tbd
*tbd
;
1063 short length
= skb
->len
;
1064 dev
->trans_start
= jiffies
;
1066 DEB(DEB_STARTTX
,printk(KERN_DEBUG
"%s: i596_start_xmit(%x,%p) called\n",
1067 dev
->name
, skb
->len
, skb
->data
));
1069 if (skb
->len
< ETH_ZLEN
) {
1070 if (skb_padto(skb
, ETH_ZLEN
))
1074 netif_stop_queue(dev
);
1076 tx_cmd
= lp
->tx_cmds
+ lp
->next_tx_cmd
;
1077 tbd
= lp
->tbds
+ lp
->next_tx_cmd
;
1079 if (tx_cmd
->cmd
.command
) {
1080 printk(KERN_NOTICE
"%s: xmit ring full, dropping packet.\n",
1082 dev
->stats
.tx_dropped
++;
1086 if (++lp
->next_tx_cmd
== TX_RING_SIZE
)
1087 lp
->next_tx_cmd
= 0;
1088 tx_cmd
->tbd
= WSWAPtbd(virt_to_bus(tbd
));
1089 tbd
->next
= I596_NULL
;
1091 tx_cmd
->cmd
.command
= CMD_FLEX
| CmdTx
;
1097 tbd
->size
= EOF
| length
;
1099 tbd
->data
= WSWAPchar(virt_to_bus(skb
->data
));
1102 cache_push(virt_to_phys(skb
->data
), length
);
1104 DEB(DEB_TXADDR
,print_eth(skb
->data
, "tx-queued"));
1105 i596_add_cmd(dev
, &tx_cmd
->cmd
);
1107 dev
->stats
.tx_packets
++;
1108 dev
->stats
.tx_bytes
+= length
;
1111 netif_start_queue(dev
);
1116 static void print_eth(unsigned char *add
, char *str
)
1118 printk(KERN_DEBUG
"i596 0x%p, %pM --> %pM %02X%02X, %s\n",
1119 add
, add
+ 6, add
, add
[12], add
[13], str
);
1122 static int io
= 0x300;
1123 static int irq
= 10;
1125 struct net_device
* __init
i82596_probe(int unit
)
1127 struct net_device
*dev
;
1129 struct i596_private
*lp
;
1135 return ERR_PTR(-ENODEV
);
1138 dev
= alloc_etherdev(0);
1140 return ERR_PTR(-ENOMEM
);
1143 sprintf(dev
->name
, "eth%d", unit
);
1144 netdev_boot_setup_check(dev
);
1146 dev
->base_addr
= io
;
1150 #ifdef ENABLE_MVME16x_NET
1151 if (MACH_IS_MVME16x
) {
1152 if (mvme16x_config
& MVME16x_CONFIG_NO_ETHERNET
) {
1153 printk(KERN_NOTICE
"Ethernet probe disabled - chip not present\n");
1157 memcpy(eth_addr
, (void *) 0xfffc1f2c, 6); /* YUCK! Get addr from NOVRAM */
1158 dev
->base_addr
= MVME_I596_BASE
;
1159 dev
->irq
= (unsigned) MVME16x_IRQ_I596
;
1163 #ifdef ENABLE_BVME6000_NET
1164 if (MACH_IS_BVME6000
) {
1165 volatile unsigned char *rtc
= (unsigned char *) BVME_RTC_BASE
;
1166 unsigned char msr
= rtc
[3];
1170 for (i
= 0; i
< 6; i
++)
1171 eth_addr
[i
] = rtc
[i
* 4 + 7]; /* Stored in RTC RAM at offset 1 */
1173 dev
->base_addr
= BVME_I596_BASE
;
1174 dev
->irq
= (unsigned) BVME_IRQ_I596
;
1178 #ifdef ENABLE_APRICOT
1183 /* this is easy the ethernet interface can only be at 0x300 */
1184 /* first check nothing is already registered here */
1186 if (!request_region(ioaddr
, I596_TOTAL_SIZE
, DRV_NAME
)) {
1187 printk(KERN_ERR
"82596: IO address 0x%04x in use\n", ioaddr
);
1192 dev
->base_addr
= ioaddr
;
1194 for (i
= 0; i
< 8; i
++) {
1195 eth_addr
[i
] = inb(ioaddr
+ 8 + i
);
1196 checksum
+= eth_addr
[i
];
1199 /* checksum is a multiple of 0x100, got this wrong first time
1200 some machines have 0x100, some 0x200. The DOS driver doesn't
1201 even bother with the checksum.
1202 Some other boards trip the checksum.. but then appear as
1203 ether address 0. Trap these - AC */
1205 if ((checksum
% 0x100) ||
1206 (memcmp(eth_addr
, "\x00\x00\x49", 3) != 0)) {
1219 dev
->mem_start
= (int)__get_free_pages(GFP_ATOMIC
, 0);
1220 if (!dev
->mem_start
) {
1225 DEB(DEB_PROBE
,printk(KERN_INFO
"%s: 82596 at %#3lx,", dev
->name
, dev
->base_addr
));
1227 for (i
= 0; i
< 6; i
++)
1228 DEB(DEB_PROBE
,printk(" %2.2X", dev
->dev_addr
[i
] = eth_addr
[i
]));
1230 DEB(DEB_PROBE
,printk(" IRQ %d.\n", dev
->irq
));
1232 DEB(DEB_PROBE
,printk(KERN_INFO
"%s", version
));
1234 /* The 82596-specific entries in the device structure. */
1235 dev
->open
= i596_open
;
1236 dev
->stop
= i596_close
;
1237 dev
->hard_start_xmit
= i596_start_xmit
;
1238 dev
->set_multicast_list
= set_multicast_list
;
1239 dev
->tx_timeout
= i596_tx_timeout
;
1240 dev
->watchdog_timeo
= TX_TIMEOUT
;
1242 dev
->ml_priv
= (void *)(dev
->mem_start
);
1245 DEB(DEB_INIT
,printk(KERN_DEBUG
"%s: lp at 0x%08lx (%zd bytes), "
1246 "lp->scb at 0x%08lx\n",
1247 dev
->name
, (unsigned long)lp
,
1248 sizeof(struct i596_private
), (unsigned long)&lp
->scb
));
1249 memset((void *) lp
, 0, sizeof(struct i596_private
));
1252 cache_push(virt_to_phys((void *)(dev
->mem_start
)), 4096);
1253 cache_clear(virt_to_phys((void *)(dev
->mem_start
)), 4096);
1254 kernel_set_cachemode((void *)(dev
->mem_start
), 4096, IOMAP_NOCACHE_SER
);
1256 lp
->scb
.command
= 0;
1257 lp
->scb
.cmd
= I596_NULL
;
1258 lp
->scb
.rfd
= I596_NULL
;
1259 spin_lock_init(&lp
->lock
);
1261 err
= register_netdev(dev
);
1267 /* XXX This assumes default cache mode to be IOMAP_FULL_CACHING,
1268 * XXX which may be invalid (CONFIG_060_WRITETHROUGH)
1270 kernel_set_cachemode((void *)(dev
->mem_start
), 4096,
1271 IOMAP_FULL_CACHING
);
1273 free_page ((u32
)(dev
->mem_start
));
1275 #ifdef ENABLE_APRICOT
1276 release_region(dev
->base_addr
, I596_TOTAL_SIZE
);
1280 return ERR_PTR(err
);
1283 static irqreturn_t
i596_interrupt(int irq
, void *dev_id
)
1285 struct net_device
*dev
= dev_id
;
1286 struct i596_private
*lp
;
1288 unsigned short status
, ack_cmd
= 0;
1291 #ifdef ENABLE_BVME6000_NET
1292 if (MACH_IS_BVME6000
) {
1293 if (*(char *) BVME_LOCAL_IRQ_STAT
& BVME_ETHERR
) {
1294 i596_error(irq
, dev_id
);
1300 printk(KERN_ERR
"i596_interrupt(): irq %d for unknown device.\n", irq
);
1304 ioaddr
= dev
->base_addr
;
1307 spin_lock (&lp
->lock
);
1309 wait_cmd(dev
,lp
,100,"i596 interrupt, timeout");
1310 status
= lp
->scb
.status
;
1312 DEB(DEB_INTS
,printk(KERN_DEBUG
"%s: i596 interrupt, IRQ %d, status %4.4x.\n",
1313 dev
->name
, irq
, status
));
1315 ack_cmd
= status
& 0xf000;
1317 if ((status
& 0x8000) || (status
& 0x2000)) {
1318 struct i596_cmd
*ptr
;
1321 if ((status
& 0x8000))
1322 DEB(DEB_INTS
,printk(KERN_DEBUG
"%s: i596 interrupt completed command.\n", dev
->name
));
1323 if ((status
& 0x2000))
1324 DEB(DEB_INTS
,printk(KERN_DEBUG
"%s: i596 interrupt command unit inactive %x.\n", dev
->name
, status
& 0x0700));
1326 while ((lp
->cmd_head
!= I596_NULL
) && (lp
->cmd_head
->status
& STAT_C
)) {
1329 DEB(DEB_STATUS
,printk(KERN_DEBUG
"cmd_head->status = %04x, ->command = %04x\n",
1330 lp
->cmd_head
->status
, lp
->cmd_head
->command
));
1331 lp
->cmd_head
= ptr
->v_next
;
1334 switch ((ptr
->command
) & 0x7) {
1337 struct tx_cmd
*tx_cmd
= (struct tx_cmd
*) ptr
;
1338 struct sk_buff
*skb
= tx_cmd
->skb
;
1340 if ((ptr
->status
) & STAT_OK
) {
1341 DEB(DEB_TXADDR
,print_eth(skb
->data
, "tx-done"));
1343 dev
->stats
.tx_errors
++;
1344 if ((ptr
->status
) & 0x0020)
1345 dev
->stats
.collisions
++;
1346 if (!((ptr
->status
) & 0x0040))
1347 dev
->stats
.tx_heartbeat_errors
++;
1348 if ((ptr
->status
) & 0x0400)
1349 dev
->stats
.tx_carrier_errors
++;
1350 if ((ptr
->status
) & 0x0800)
1351 dev
->stats
.collisions
++;
1352 if ((ptr
->status
) & 0x1000)
1353 dev
->stats
.tx_aborted_errors
++;
1356 dev_kfree_skb_irq(skb
);
1358 tx_cmd
->cmd
.command
= 0; /* Mark free */
1363 unsigned short status
= ((struct tdr_cmd
*)ptr
)->status
;
1365 if (status
& 0x8000) {
1366 DEB(DEB_TDR
,printk(KERN_INFO
"%s: link ok.\n", dev
->name
));
1368 if (status
& 0x4000)
1369 printk(KERN_ERR
"%s: Transceiver problem.\n", dev
->name
);
1370 if (status
& 0x2000)
1371 printk(KERN_ERR
"%s: Termination problem.\n", dev
->name
);
1372 if (status
& 0x1000)
1373 printk(KERN_ERR
"%s: Short circuit.\n", dev
->name
);
1375 DEB(DEB_TDR
,printk(KERN_INFO
"%s: Time %d.\n", dev
->name
, status
& 0x07ff));
1380 case CmdMulticastList
:
1381 /* Zap command so set_multicast_list() knows it is free */
1385 ptr
->v_next
= ptr
->b_next
= I596_NULL
;
1386 lp
->last_cmd
= jiffies
;
1390 while ((ptr
!= I596_NULL
) && (ptr
!= lp
->cmd_tail
)) {
1391 ptr
->command
&= 0x1fff;
1395 if ((lp
->cmd_head
!= I596_NULL
))
1396 ack_cmd
|= CUC_START
;
1397 lp
->scb
.cmd
= WSWAPcmd(virt_to_bus(&lp
->cmd_head
->status
));
1399 if ((status
& 0x1000) || (status
& 0x4000)) {
1400 if ((status
& 0x4000))
1401 DEB(DEB_INTS
,printk(KERN_DEBUG
"%s: i596 interrupt received a frame.\n", dev
->name
));
1403 /* Only RX_START if stopped - RGH 07-07-96 */
1404 if (status
& 0x1000) {
1405 if (netif_running(dev
)) {
1406 DEB(DEB_ERRORS
,printk(KERN_ERR
"%s: i596 interrupt receive unit inactive, status 0x%x\n", dev
->name
, status
));
1407 ack_cmd
|= RX_START
;
1408 dev
->stats
.rx_errors
++;
1409 dev
->stats
.rx_fifo_errors
++;
1410 rebuild_rx_bufs(dev
);
1414 wait_cmd(dev
,lp
,100,"i596 interrupt, timeout");
1415 lp
->scb
.command
= ack_cmd
;
1417 #ifdef ENABLE_MVME16x_NET
1418 if (MACH_IS_MVME16x
) {
1419 /* Ack the interrupt */
1421 volatile unsigned char *pcc2
= (unsigned char *) 0xfff42000;
1426 #ifdef ENABLE_BVME6000_NET
1427 if (MACH_IS_BVME6000
) {
1428 volatile unsigned char *ethirq
= (unsigned char *) BVME_ETHIRQ_REG
;
1434 #ifdef ENABLE_APRICOT
1435 (void) inb(ioaddr
+ 0x10);
1436 outb(4, ioaddr
+ 0xf);
1440 DEB(DEB_INTS
,printk(KERN_DEBUG
"%s: exiting interrupt.\n", dev
->name
));
1442 spin_unlock (&lp
->lock
);
1443 return IRQ_RETVAL(handled
);
1446 static int i596_close(struct net_device
*dev
)
1448 struct i596_private
*lp
= dev
->ml_priv
;
1449 unsigned long flags
;
1451 netif_stop_queue(dev
);
1453 DEB(DEB_INIT
,printk(KERN_DEBUG
"%s: Shutting down ethercard, status was %4.4x.\n",
1454 dev
->name
, lp
->scb
.status
));
1456 spin_lock_irqsave(&lp
->lock
, flags
);
1458 wait_cmd(dev
,lp
,100,"close1 timed out");
1459 lp
->scb
.command
= CUC_ABORT
| RX_ABORT
;
1462 wait_cmd(dev
,lp
,100,"close2 timed out");
1464 spin_unlock_irqrestore(&lp
->lock
, flags
);
1465 DEB(DEB_STRUCT
,i596_display_data(dev
));
1466 i596_cleanup_cmd(dev
,lp
);
1468 #ifdef ENABLE_MVME16x_NET
1469 if (MACH_IS_MVME16x
) {
1470 volatile unsigned char *pcc2
= (unsigned char *) 0xfff42000;
1472 /* Disable all ints */
1475 pcc2
[0x2b] = 0x40; /* Set snooping bits now! */
1478 #ifdef ENABLE_BVME6000_NET
1479 if (MACH_IS_BVME6000
) {
1480 volatile unsigned char *ethirq
= (unsigned char *) BVME_ETHIRQ_REG
;
1486 free_irq(dev
->irq
, dev
);
1487 remove_rx_bufs(dev
);
1493 * Set or clear the multicast filter for this adaptor.
1496 static void set_multicast_list(struct net_device
*dev
)
1498 struct i596_private
*lp
= dev
->ml_priv
;
1499 int config
= 0, cnt
;
1501 DEB(DEB_MULTI
,printk(KERN_DEBUG
"%s: set multicast list, %d entries, promisc %s, allmulti %s\n",
1502 dev
->name
, dev
->mc_count
,
1503 dev
->flags
& IFF_PROMISC
? "ON" : "OFF",
1504 dev
->flags
& IFF_ALLMULTI
? "ON" : "OFF"));
1506 if (wait_cfg(dev
, &lp
->cf_cmd
.cmd
, 1000, "config change request timed out"))
1509 if ((dev
->flags
& IFF_PROMISC
) && !(lp
->cf_cmd
.i596_config
[8] & 0x01)) {
1510 lp
->cf_cmd
.i596_config
[8] |= 0x01;
1513 if (!(dev
->flags
& IFF_PROMISC
) && (lp
->cf_cmd
.i596_config
[8] & 0x01)) {
1514 lp
->cf_cmd
.i596_config
[8] &= ~0x01;
1517 if ((dev
->flags
& IFF_ALLMULTI
) && (lp
->cf_cmd
.i596_config
[11] & 0x20)) {
1518 lp
->cf_cmd
.i596_config
[11] &= ~0x20;
1521 if (!(dev
->flags
& IFF_ALLMULTI
) && !(lp
->cf_cmd
.i596_config
[11] & 0x20)) {
1522 lp
->cf_cmd
.i596_config
[11] |= 0x20;
1526 lp
->cf_cmd
.cmd
.command
= CmdConfigure
;
1527 i596_add_cmd(dev
, &lp
->cf_cmd
.cmd
);
1530 cnt
= dev
->mc_count
;
1531 if (cnt
> MAX_MC_CNT
)
1534 printk(KERN_ERR
"%s: Only %d multicast addresses supported",
1538 if (dev
->mc_count
> 0) {
1539 struct dev_mc_list
*dmi
;
1543 if (wait_cfg(dev
, &lp
->mc_cmd
.cmd
, 1000, "multicast list change request timed out"))
1546 cmd
->cmd
.command
= CmdMulticastList
;
1547 cmd
->mc_cnt
= dev
->mc_count
* 6;
1549 for (dmi
= dev
->mc_list
; cnt
&& dmi
!= NULL
; dmi
= dmi
->next
, cnt
--, cp
+= 6) {
1550 memcpy(cp
, dmi
->dmi_addr
, 6);
1552 DEB(DEB_MULTI
,printk(KERN_INFO
"%s: Adding address %pM\n",
1555 i596_add_cmd(dev
, &cmd
->cmd
);
1560 static struct net_device
*dev_82596
;
1562 #ifdef ENABLE_APRICOT
1563 module_param(irq
, int, 0);
1564 MODULE_PARM_DESC(irq
, "Apricot IRQ number");
1567 static int debug
= -1;
1568 module_param(debug
, int, 0);
1569 MODULE_PARM_DESC(debug
, "i82596 debug mask");
1571 int __init
init_module(void)
1575 dev_82596
= i82596_probe(-1);
1576 if (IS_ERR(dev_82596
))
1577 return PTR_ERR(dev_82596
);
1581 void __exit
cleanup_module(void)
1583 unregister_netdev(dev_82596
);
1585 /* XXX This assumes default cache mode to be IOMAP_FULL_CACHING,
1586 * XXX which may be invalid (CONFIG_060_WRITETHROUGH)
1589 kernel_set_cachemode((void *)(dev_82596
->mem_start
), 4096,
1590 IOMAP_FULL_CACHING
);
1592 free_page ((u32
)(dev_82596
->mem_start
));
1593 #ifdef ENABLE_APRICOT
1594 /* If we don't do this, we can't re-insmod it later. */
1595 release_region(dev_82596
->base_addr
, I596_TOTAL_SIZE
);
1597 free_netdev(dev_82596
);
1604 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c 82596.c"