1 /* lasi_82596.c -- driver for the intel 82596 ethernet controller, as
2 munged into HPPA boxen .
4 This driver is based upon 82596.c, original credits are below...
5 but there were too many hoops which HP wants jumped through to
6 keep this code in there in a sane manner.
8 3 primary sources of the mess --
9 1) hppa needs *lots* of cacheline flushing to keep this kind of
12 2) The 82596 needs to see all of its pointers as their physical
13 address. Thus virt_to_bus/bus_to_virt are *everywhere*.
15 3) The implementation HP is using seems to be significantly pickier
16 about when and how the command and RX units are started. some
17 command ordering was changed.
19 Examination of the mach driver leads one to believe that there
20 might be a saner way to pull this off... anyone who feels like a
21 full rewrite can be my guest.
23 Split 02/13/2000 Sam Creasey (sammy@oh.verio.com)
25 02/01/2000 Initial modifications for parisc by Helge Deller (deller@gmx.de)
26 03/02/2000 changes for better/correct(?) cache-flushing (deller)
29 /* 82596.c: A generic 82596 ethernet driver for linux. */
32 Written 1994 by Mark Evans.
33 This driver is for the Apricot 82596 bus-master interface
35 Modularised 12/94 Mark Evans
38 Modified to support the 82596 ethernet chips on 680x0 VME boards.
39 by Richard Hirst <richard@sleepie.demon.co.uk>
42 980825: Changed to receive directly in to sk_buffs which are
43 allocated at open() time. Eliminates copy on incoming frames
44 (small ones are still copied). Shared data now held in a
45 non-cached page, so we can run on 68060 in copyback mode.
48 * look at deferring rx frames rather than discarding (as per tulip)
49 * handle tx ring full as per tulip
50 * performace test to tune rx_copybreak
52 Most of my modifications relate to the braindead big-endian
53 implementation by Intel. When the i596 is operating in
54 'big-endian' mode, it thinks a 32 bit value of 0x12345678
55 should be stored as 0x56781234. This is a real pain, when
56 you have linked lists which are shared by the 680x0 and the
60 Written 1993 by Donald Becker.
61 Copyright 1993 United States Government as represented by the Director,
62 National Security Agency. This software may only be used and distributed
63 according to the terms of the GNU General Public License as modified by SRC,
64 incorporated herein by reference.
66 The author may be reached as becker@scyld.com, or C/O
67 Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
71 #include <linux/module.h>
72 #include <linux/kernel.h>
73 #include <linux/string.h>
74 #include <linux/ptrace.h>
75 #include <linux/errno.h>
76 #include <linux/ioport.h>
77 #include <linux/slab.h>
78 #include <linux/interrupt.h>
79 #include <linux/delay.h>
80 #include <linux/netdevice.h>
81 #include <linux/etherdevice.h>
82 #include <linux/skbuff.h>
83 #include <linux/init.h>
84 #include <linux/types.h>
85 #include <linux/bitops.h>
88 #include <asm/pgtable.h>
91 #include <asm/cache.h>
92 #include <asm/parisc-device.h>
94 #define LASI_82596_DRIVER_VERSION "LASI 82596 driver - Revision: 1.30"
99 #define DEB_INIT 0x0001
100 #define DEB_PROBE 0x0002
101 #define DEB_SERIOUS 0x0004
102 #define DEB_ERRORS 0x0008
103 #define DEB_MULTI 0x0010
104 #define DEB_TDR 0x0020
105 #define DEB_OPEN 0x0040
106 #define DEB_RESET 0x0080
107 #define DEB_ADDCMD 0x0100
108 #define DEB_STATUS 0x0200
109 #define DEB_STARTTX 0x0400
110 #define DEB_RXADDR 0x0800
111 #define DEB_TXADDR 0x1000
112 #define DEB_RXFRAME 0x2000
113 #define DEB_INTS 0x4000
114 #define DEB_STRUCT 0x8000
115 #define DEB_ANY 0xffff
118 #define DEB(x,y) if (i596_debug & (x)) { y; }
121 #define CHECK_WBACK(priv, addr,len) \
122 do { dma_cache_sync((priv)->dev, (void *)addr, len, DMA_TO_DEVICE); } while (0)
124 #define CHECK_INV(priv, addr,len) \
125 do { dma_cache_sync((priv)->dev, (void *)addr, len, DMA_FROM_DEVICE); } while(0)
127 #define CHECK_WBACK_INV(priv, addr,len) \
128 do { dma_cache_sync((priv)->dev, (void *)addr, len, DMA_BIDIRECTIONAL); } while (0)
131 #define PA_I82596_RESET 0 /* Offsets relative to LASI-LAN-Addr.*/
132 #define PA_CPU_PORT_L_ACCESS 4
133 #define PA_CHANNEL_ATTENTION 8
137 * Define various macros for Channel Attention, word swapping etc., dependent
138 * on architecture. MVME and BVME are 680x0 based, otherwise it is Intel.
142 #define WSWAPrfd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
143 #define WSWAPrbd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
144 #define WSWAPiscp(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
145 #define WSWAPscb(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
146 #define WSWAPcmd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
147 #define WSWAPtbd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
148 #define WSWAPchar(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
149 #define ISCP_BUSY 0x00010000
150 #define MACH_IS_APRICOT 0
152 #define WSWAPrfd(x) ((struct i596_rfd *)(x))
153 #define WSWAPrbd(x) ((struct i596_rbd *)(x))
154 #define WSWAPiscp(x) ((struct i596_iscp *)(x))
155 #define WSWAPscb(x) ((struct i596_scb *)(x))
156 #define WSWAPcmd(x) ((struct i596_cmd *)(x))
157 #define WSWAPtbd(x) ((struct i596_tbd *)(x))
158 #define WSWAPchar(x) ((char *)(x))
159 #define ISCP_BUSY 0x0001
160 #define MACH_IS_APRICOT 1
164 * The MPU_PORT command allows direct access to the 82596. With PORT access
165 * the following commands are available (p5-18). The 32-bit port command
166 * must be word-swapped with the most significant word written first.
167 * This only applies to VME boards.
169 #define PORT_RESET 0x00 /* reset 82596 */
170 #define PORT_SELFTEST 0x01 /* selftest */
171 #define PORT_ALTSCP 0x02 /* alternate SCB address */
172 #define PORT_ALTDUMP 0x03 /* Alternate DUMP address */
174 static int i596_debug = (DEB_SERIOUS|DEB_PROBE);
176 MODULE_AUTHOR("Richard Hirst");
177 MODULE_DESCRIPTION("i82596 driver");
178 MODULE_LICENSE("GPL");
179 module_param(i596_debug, int, 0);
180 MODULE_PARM_DESC(i596_debug, "lasi_82596 debug mask");
182 /* Copy frames shorter than rx_copybreak, otherwise pass on up in
183 * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha).
185 static int rx_copybreak = 100;
187 #define MAX_DRIVERS 4 /* max count of drivers */
189 #define PKT_BUF_SZ 1536
190 #define MAX_MC_CNT 64
192 #define I596_NULL ((u32)0xffffffff)
194 #define CMD_EOL 0x8000 /* The last command of the list, stop. */
195 #define CMD_SUSP 0x4000 /* Suspend after doing cmd. */
196 #define CMD_INTR 0x2000 /* Interrupt after doing cmd. */
198 #define CMD_FLEX 0x0008 /* Enable flexible memory model */
201 CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3,
202 CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7
205 #define STAT_C 0x8000 /* Set to 0 after execution */
206 #define STAT_B 0x4000 /* Command being executed */
207 #define STAT_OK 0x2000 /* Command executed ok */
208 #define STAT_A 0x1000 /* Command aborted */
210 #define CUC_START 0x0100
211 #define CUC_RESUME 0x0200
212 #define CUC_SUSPEND 0x0300
213 #define CUC_ABORT 0x0400
214 #define RX_START 0x0010
215 #define RX_RESUME 0x0020
216 #define RX_SUSPEND 0x0030
217 #define RX_ABORT 0x0040
221 #define OPT_SWAP_PORT 0x0001 /* Need to wordswp on the MPU port */
225 unsigned short porthi;
226 unsigned short portlo;
231 #define SIZE_MASK 0x3fff
238 u32 cache_pad[5]; /* Total 32 bytes... */
241 /* The command structure has two 'next' pointers; v_next is the address of
242 * the next command as seen by the CPU, b_next is the address of the next
243 * command as seen by the 82596. The b_next pointer, as used by the 82596
244 * always references the status field of the next command, rather than the
245 * v_next field, because the 82596 is unaware of v_next. It may seem more
246 * logical to put v_next at the end of the structure, but we cannot do that
247 * because the 82596 expects other fields to be there, depending on command
252 struct i596_cmd *v_next; /* Address from CPUs viewpoint */
253 unsigned short status;
254 unsigned short command;
255 dma_addr_t b_next; /* Address from i596 viewpoint */
263 struct sk_buff *skb; /* So we can free it after tx */
266 u32 cache_pad[6]; /* Total 64 bytes... */
268 u32 cache_pad[1]; /* Total 32 bytes... */
274 unsigned short status;
281 char mc_addrs[MAX_MC_CNT*6];
291 char i596_config[16];
297 dma_addr_t b_next; /* Address from i596 viewpoint */
299 unsigned short count;
301 struct i596_rfd *v_next; /* Address from CPUs viewpoint */
302 struct i596_rfd *v_prev;
304 u32 cache_pad[2]; /* Total 32 bytes... */
310 unsigned short count;
311 unsigned short zero1;
313 dma_addr_t b_data; /* Address from i596 viewpoint */
315 unsigned short zero2;
318 struct i596_rbd *v_next;
319 dma_addr_t b_addr; /* This rbd addr from i596 view */
320 unsigned char *v_data; /* Address from CPUs viewpoint */
321 /* Total 32 bytes... */
327 /* These values as chosen so struct i596_private fits in one page... */
329 #define TX_RING_SIZE 32
330 #define RX_RING_SIZE 16
333 unsigned short status;
334 unsigned short command;
344 unsigned short t_off;
358 struct i596_private {
359 volatile struct i596_scp scp __attribute__((aligned(32)));
360 volatile struct i596_iscp iscp __attribute__((aligned(32)));
361 volatile struct i596_scb scb __attribute__((aligned(32)));
362 struct sa_cmd sa_cmd __attribute__((aligned(32)));
363 struct cf_cmd cf_cmd __attribute__((aligned(32)));
364 struct tdr_cmd tdr_cmd __attribute__((aligned(32)));
365 struct mc_cmd mc_cmd __attribute__((aligned(32)));
366 struct i596_rfd rfds[RX_RING_SIZE] __attribute__((aligned(32)));
367 struct i596_rbd rbds[RX_RING_SIZE] __attribute__((aligned(32)));
368 struct tx_cmd tx_cmds[TX_RING_SIZE] __attribute__((aligned(32)));
369 struct i596_tbd tbds[TX_RING_SIZE] __attribute__((aligned(32)));
372 struct i596_rfd *rfd_head;
373 struct i596_rbd *rbd_head;
374 struct i596_cmd *cmd_tail;
375 struct i596_cmd *cmd_head;
378 struct net_device_stats stats;
386 static const char init_setup[] =
388 0x8E, /* length, prefetch on */
389 0xC8, /* fifo to 8, monitor off */
390 0x80, /* don't save bad frames */
391 0x2E, /* No source address insertion, 8 byte preamble */
392 0x00, /* priority and backoff defaults */
393 0x60, /* interframe spacing */
394 0x00, /* slot time LSB */
395 0xf2, /* slot time and retries */
396 0x00, /* promiscuous mode */
397 0x00, /* collision detect */
398 0x40, /* minimum frame length */
401 0x7f /* *multi IA */ };
403 static int i596_open(struct net_device *dev);
404 static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev);
405 static irqreturn_t i596_interrupt(int irq, void *dev_id);
406 static int i596_close(struct net_device *dev);
407 static struct net_device_stats *i596_get_stats(struct net_device *dev);
408 static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd);
409 static void i596_tx_timeout (struct net_device *dev);
410 static void print_eth(unsigned char *buf, char *str);
411 static void set_multicast_list(struct net_device *dev);
413 static int rx_ring_size = RX_RING_SIZE;
414 static int ticks_limit = 100;
415 static int max_cmd_backlog = TX_RING_SIZE-1;
417 #ifdef CONFIG_NET_POLL_CONTROLLER
418 static void i596_poll_controller(struct net_device *dev);
422 static inline void CA(struct net_device *dev)
424 gsc_writel(0, dev->base_addr + PA_CHANNEL_ATTENTION);
428 static inline void MPU_PORT(struct net_device *dev, int c, dma_addr_t x)
430 struct i596_private *lp = dev->priv;
432 u32 v = (u32) (c) | (u32) (x);
435 if (lp->options & OPT_SWAP_PORT) {
443 gsc_writel(a, dev->base_addr + PA_CPU_PORT_L_ACCESS);
445 gsc_writel(b, dev->base_addr + PA_CPU_PORT_L_ACCESS);
449 static inline int wait_istat(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
451 CHECK_INV(lp, &(lp->iscp), sizeof(struct i596_iscp));
452 while (--delcnt && lp->iscp.stat) {
454 CHECK_INV(lp, &(lp->iscp), sizeof(struct i596_iscp));
457 printk("%s: %s, iscp.stat %04x, didn't clear\n",
458 dev->name, str, lp->iscp.stat);
466 static inline int wait_cmd(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
468 CHECK_INV(lp, &(lp->scb), sizeof(struct i596_scb));
469 while (--delcnt && lp->scb.command) {
471 CHECK_INV(lp, &(lp->scb), sizeof(struct i596_scb));
474 printk("%s: %s, status %4.4x, cmd %4.4x.\n",
475 dev->name, str, lp->scb.status, lp->scb.command);
483 static void i596_display_data(struct net_device *dev)
485 struct i596_private *lp = dev->priv;
486 struct i596_cmd *cmd;
487 struct i596_rfd *rfd;
488 struct i596_rbd *rbd;
490 printk("lp and scp at %p, .sysbus = %08x, .iscp = %08x\n",
491 &lp->scp, lp->scp.sysbus, lp->scp.iscp);
492 printk("iscp at %p, iscp.stat = %08x, .scb = %08x\n",
493 &lp->iscp, lp->iscp.stat, lp->iscp.scb);
494 printk("scb at %p, scb.status = %04x, .command = %04x,"
495 " .cmd = %08x, .rfd = %08x\n",
496 &lp->scb, lp->scb.status, lp->scb.command,
497 lp->scb.cmd, lp->scb.rfd);
498 printk(" errors: crc %x, align %x, resource %x,"
499 " over %x, rcvdt %x, short %x\n",
500 lp->scb.crc_err, lp->scb.align_err, lp->scb.resource_err,
501 lp->scb.over_err, lp->scb.rcvdt_err, lp->scb.short_err);
503 while (cmd != NULL) {
504 printk("cmd at %p, .status = %04x, .command = %04x, .b_next = %08x\n",
505 cmd, cmd->status, cmd->command, cmd->b_next);
509 printk("rfd_head = %p\n", rfd);
511 printk(" %p .stat %04x, .cmd %04x, b_next %08x, rbd %08x,"
513 rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd,
516 } while (rfd != lp->rfd_head);
518 printk("rbd_head = %p\n", rbd);
520 printk(" %p .count %04x, b_next %08x, b_data %08x, size %04x\n",
521 rbd, rbd->count, rbd->b_next, rbd->b_data, rbd->size);
523 } while (rbd != lp->rbd_head);
524 CHECK_INV(lp, lp, sizeof(struct i596_private));
528 #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
529 static void i596_error(int irq, void *dev_id)
531 struct net_device *dev = dev_id;
532 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
536 printk("%s: Error interrupt\n", dev->name);
537 i596_display_data(dev);
541 #define virt_to_dma(lp,v) ((lp)->dma_addr + (dma_addr_t)((unsigned long)(v)-(unsigned long)(lp)))
543 static inline void init_rx_bufs(struct net_device *dev)
545 struct i596_private *lp = dev->priv;
547 struct i596_rfd *rfd;
548 struct i596_rbd *rbd;
550 /* First build the Receive Buffer Descriptor List */
552 for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
554 struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ + 4);
557 panic("%s: alloc_skb() failed", __FILE__);
559 dma_addr = dma_map_single(lp->dev, skb->data,PKT_BUF_SZ,
563 rbd->b_next = WSWAPrbd(virt_to_dma(lp,rbd+1));
564 rbd->b_addr = WSWAPrbd(virt_to_dma(lp,rbd));
566 rbd->v_data = skb->data;
567 rbd->b_data = WSWAPchar(dma_addr);
568 rbd->size = PKT_BUF_SZ;
570 lp->rbd_head = lp->rbds;
571 rbd = lp->rbds + rx_ring_size - 1;
572 rbd->v_next = lp->rbds;
573 rbd->b_next = WSWAPrbd(virt_to_dma(lp,lp->rbds));
575 /* Now build the Receive Frame Descriptor List */
577 for (i = 0, rfd = lp->rfds; i < rx_ring_size; i++, rfd++) {
578 rfd->rbd = I596_NULL;
581 rfd->b_next = WSWAPrfd(virt_to_dma(lp,rfd+1));
584 lp->rfd_head = lp->rfds;
585 lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds));
587 rfd->rbd = WSWAPrbd(virt_to_dma(lp,lp->rbd_head));
588 rfd->v_prev = lp->rfds + rx_ring_size - 1;
589 rfd = lp->rfds + rx_ring_size - 1;
590 rfd->v_next = lp->rfds;
591 rfd->b_next = WSWAPrfd(virt_to_dma(lp,lp->rfds));
592 rfd->cmd = CMD_EOL|CMD_FLEX;
594 CHECK_WBACK_INV(lp, lp, sizeof(struct i596_private));
597 static inline void remove_rx_bufs(struct net_device *dev)
599 struct i596_private *lp = dev->priv;
600 struct i596_rbd *rbd;
603 for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
604 if (rbd->skb == NULL)
606 dma_unmap_single(lp->dev,
607 (dma_addr_t)WSWAPchar(rbd->b_data),
608 PKT_BUF_SZ, DMA_FROM_DEVICE);
609 dev_kfree_skb(rbd->skb);
614 static void rebuild_rx_bufs(struct net_device *dev)
616 struct i596_private *lp = dev->priv;
619 /* Ensure rx frame/buffer descriptors are tidy */
621 for (i = 0; i < rx_ring_size; i++) {
622 lp->rfds[i].rbd = I596_NULL;
623 lp->rfds[i].cmd = CMD_FLEX;
625 lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX;
626 lp->rfd_head = lp->rfds;
627 lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds));
628 lp->rbd_head = lp->rbds;
629 lp->rfds[0].rbd = WSWAPrbd(virt_to_dma(lp,lp->rbds));
631 CHECK_WBACK_INV(lp, lp, sizeof(struct i596_private));
635 static int init_i596_mem(struct net_device *dev)
637 struct i596_private *lp = dev->priv;
640 disable_irq(dev->irq); /* disable IRQs from LAN */
642 printk("RESET 82596 port: %lx (with IRQ %d disabled)\n",
643 (dev->base_addr + PA_I82596_RESET),
646 gsc_writel(0, (dev->base_addr + PA_I82596_RESET)); /* Hard Reset */
647 udelay(100); /* Wait 100us - seems to help */
649 /* change the scp address */
651 lp->last_cmd = jiffies;
654 lp->scp.sysbus = 0x0000006c;
655 lp->scp.iscp = WSWAPiscp(virt_to_dma(lp,&(lp->iscp)));
656 lp->iscp.scb = WSWAPscb(virt_to_dma(lp,&(lp->scb)));
657 lp->iscp.stat = ISCP_BUSY;
661 lp->scb.cmd = I596_NULL;
663 DEB(DEB_INIT, printk("%s: starting i82596.\n", dev->name));
665 CHECK_WBACK(lp, &(lp->scp), sizeof(struct i596_scp));
666 CHECK_WBACK(lp, &(lp->iscp), sizeof(struct i596_iscp));
668 MPU_PORT(dev, PORT_ALTSCP, virt_to_dma(lp,&lp->scp));
672 if (wait_istat(dev, lp, 1000, "initialization timed out"))
674 DEB(DEB_INIT, printk("%s: i82596 initialization successful\n", dev->name));
676 /* Ensure rx frame/buffer descriptors are tidy */
677 rebuild_rx_bufs(dev);
680 CHECK_WBACK(lp, &(lp->scb), sizeof(struct i596_scb));
682 enable_irq(dev->irq); /* enable IRQs from LAN */
684 DEB(DEB_INIT, printk("%s: queuing CmdConfigure\n", dev->name));
685 memcpy(lp->cf_cmd.i596_config, init_setup, sizeof(init_setup));
686 lp->cf_cmd.cmd.command = CmdConfigure;
687 CHECK_WBACK(lp, &(lp->cf_cmd), sizeof(struct cf_cmd));
688 i596_add_cmd(dev, &lp->cf_cmd.cmd);
690 DEB(DEB_INIT, printk("%s: queuing CmdSASetup\n", dev->name));
691 memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6);
692 lp->sa_cmd.cmd.command = CmdSASetup;
693 CHECK_WBACK(lp, &(lp->sa_cmd), sizeof(struct sa_cmd));
694 i596_add_cmd(dev, &lp->sa_cmd.cmd);
696 DEB(DEB_INIT, printk("%s: queuing CmdTDR\n", dev->name));
697 lp->tdr_cmd.cmd.command = CmdTDR;
698 CHECK_WBACK(lp, &(lp->tdr_cmd), sizeof(struct tdr_cmd));
699 i596_add_cmd(dev, &lp->tdr_cmd.cmd);
701 spin_lock_irqsave (&lp->lock, flags);
703 if (wait_cmd(dev, lp, 1000, "timed out waiting to issue RX_START")) {
704 spin_unlock_irqrestore (&lp->lock, flags);
707 DEB(DEB_INIT, printk("%s: Issuing RX_START\n", dev->name));
708 lp->scb.command = RX_START;
709 lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds));
710 CHECK_WBACK(lp, &(lp->scb), sizeof(struct i596_scb));
714 spin_unlock_irqrestore (&lp->lock, flags);
716 if (wait_cmd(dev, lp, 1000, "RX_START not processed"))
718 DEB(DEB_INIT, printk("%s: Receive unit started OK\n", dev->name));
723 printk("%s: Failed to initialise 82596\n", dev->name);
724 MPU_PORT(dev, PORT_RESET, 0);
729 static inline int i596_rx(struct net_device *dev)
731 struct i596_private *lp = dev->priv;
732 struct i596_rfd *rfd;
733 struct i596_rbd *rbd;
736 DEB(DEB_RXFRAME, printk("i596_rx(), rfd_head %p, rbd_head %p\n",
737 lp->rfd_head, lp->rbd_head));
740 rfd = lp->rfd_head; /* Ref next frame to check */
742 CHECK_INV(lp, rfd, sizeof(struct i596_rfd));
743 while ((rfd->stat) & STAT_C) { /* Loop while complete frames */
744 if (rfd->rbd == I596_NULL)
746 else if (rfd->rbd == lp->rbd_head->b_addr) {
748 CHECK_INV(lp, rbd, sizeof(struct i596_rbd));
751 printk("%s: rbd chain broken!\n", dev->name);
755 DEB(DEB_RXFRAME, printk(" rfd %p, rfd.rbd %08x, rfd.stat %04x\n",
756 rfd, rfd->rbd, rfd->stat));
758 if (rbd != NULL && ((rfd->stat) & STAT_OK)) {
760 int pkt_len = rbd->count & 0x3fff;
761 struct sk_buff *skb = rbd->skb;
764 DEB(DEB_RXADDR,print_eth(rbd->v_data, "received"));
767 /* Check if the packet is long enough to just accept
768 * without copying to a properly sized skbuff.
771 if (pkt_len > rx_copybreak) {
772 struct sk_buff *newskb;
775 dma_unmap_single(lp->dev,(dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE);
776 /* Get fresh skbuff to replace filled one. */
777 newskb = dev_alloc_skb(PKT_BUF_SZ + 4);
778 if (newskb == NULL) {
779 skb = NULL; /* drop pkt */
782 skb_reserve(newskb, 2);
784 /* Pass up the skb already on the Rx ring. */
785 skb_put(skb, pkt_len);
789 dma_addr = dma_map_single(lp->dev, newskb->data, PKT_BUF_SZ, DMA_FROM_DEVICE);
790 rbd->v_data = newskb->data;
791 rbd->b_data = WSWAPchar(dma_addr);
792 CHECK_WBACK_INV(lp, rbd, sizeof(struct i596_rbd));
795 skb = dev_alloc_skb(pkt_len + 2);
798 /* XXX tulip.c can defer packets here!! */
799 printk("%s: i596_rx Memory squeeze, dropping packet.\n", dev->name);
800 lp->stats.rx_dropped++;
804 /* 16 byte align the data fields */
805 dma_sync_single_for_cpu(lp->dev, (dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE);
807 memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len);
808 dma_sync_single_for_device(lp->dev, (dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE);
811 skb->protocol=eth_type_trans(skb,dev);
813 dev->last_rx = jiffies;
814 lp->stats.rx_packets++;
815 lp->stats.rx_bytes+=pkt_len;
819 DEB(DEB_ERRORS, printk("%s: Error, rfd.stat = 0x%04x\n",
820 dev->name, rfd->stat));
821 lp->stats.rx_errors++;
822 if ((rfd->stat) & 0x0001)
823 lp->stats.collisions++;
824 if ((rfd->stat) & 0x0080)
825 lp->stats.rx_length_errors++;
826 if ((rfd->stat) & 0x0100)
827 lp->stats.rx_over_errors++;
828 if ((rfd->stat) & 0x0200)
829 lp->stats.rx_fifo_errors++;
830 if ((rfd->stat) & 0x0400)
831 lp->stats.rx_frame_errors++;
832 if ((rfd->stat) & 0x0800)
833 lp->stats.rx_crc_errors++;
834 if ((rfd->stat) & 0x1000)
835 lp->stats.rx_length_errors++;
838 /* Clear the buffer descriptor count and EOF + F flags */
840 if (rbd != NULL && (rbd->count & 0x4000)) {
842 lp->rbd_head = rbd->v_next;
843 CHECK_WBACK_INV(lp, rbd, sizeof(struct i596_rbd));
846 /* Tidy the frame descriptor, marking it as end of list */
848 rfd->rbd = I596_NULL;
850 rfd->cmd = CMD_EOL|CMD_FLEX;
853 /* Remove end-of-list from old end descriptor */
855 rfd->v_prev->cmd = CMD_FLEX;
857 /* Update record of next frame descriptor to process */
859 lp->scb.rfd = rfd->b_next;
860 lp->rfd_head = rfd->v_next;
861 CHECK_WBACK_INV(lp, rfd->v_prev, sizeof(struct i596_rfd));
862 CHECK_WBACK_INV(lp, rfd, sizeof(struct i596_rfd));
864 CHECK_INV(lp, rfd, sizeof(struct i596_rfd));
867 DEB(DEB_RXFRAME, printk("frames %d\n", frames));
873 static inline void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp)
875 struct i596_cmd *ptr;
877 while (lp->cmd_head != NULL) {
879 lp->cmd_head = ptr->v_next;
882 switch ((ptr->command) & 0x7) {
885 struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
886 struct sk_buff *skb = tx_cmd->skb;
887 dma_unmap_single(lp->dev, tx_cmd->dma_addr, skb->len, DMA_TO_DEVICE);
891 lp->stats.tx_errors++;
892 lp->stats.tx_aborted_errors++;
895 ptr->b_next = I596_NULL;
896 tx_cmd->cmd.command = 0; /* Mark as free */
901 ptr->b_next = I596_NULL;
903 CHECK_WBACK_INV(lp, ptr, sizeof(struct i596_cmd));
906 wait_cmd(dev, lp, 100, "i596_cleanup_cmd timed out");
907 lp->scb.cmd = I596_NULL;
908 CHECK_WBACK(lp, &(lp->scb), sizeof(struct i596_scb));
912 static inline void i596_reset(struct net_device *dev, struct i596_private *lp)
916 DEB(DEB_RESET, printk("i596_reset\n"));
918 spin_lock_irqsave (&lp->lock, flags);
920 wait_cmd(dev, lp, 100, "i596_reset timed out");
922 netif_stop_queue(dev);
924 /* FIXME: this command might cause an lpmc */
925 lp->scb.command = CUC_ABORT | RX_ABORT;
926 CHECK_WBACK(lp, &(lp->scb), sizeof(struct i596_scb));
929 /* wait for shutdown */
930 wait_cmd(dev, lp, 1000, "i596_reset 2 timed out");
931 spin_unlock_irqrestore (&lp->lock, flags);
933 i596_cleanup_cmd(dev,lp);
936 netif_start_queue(dev);
941 static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd)
943 struct i596_private *lp = dev->priv;
946 DEB(DEB_ADDCMD, printk("i596_add_cmd cmd_head %p\n", lp->cmd_head));
949 cmd->command |= (CMD_EOL | CMD_INTR);
951 cmd->b_next = I596_NULL;
952 CHECK_WBACK(lp, cmd, sizeof(struct i596_cmd));
954 spin_lock_irqsave (&lp->lock, flags);
956 if (lp->cmd_head != NULL) {
957 lp->cmd_tail->v_next = cmd;
958 lp->cmd_tail->b_next = WSWAPcmd(virt_to_dma(lp,&cmd->status));
959 CHECK_WBACK(lp, lp->cmd_tail, sizeof(struct i596_cmd));
962 wait_cmd(dev, lp, 100, "i596_add_cmd timed out");
963 lp->scb.cmd = WSWAPcmd(virt_to_dma(lp,&cmd->status));
964 lp->scb.command = CUC_START;
965 CHECK_WBACK(lp, &(lp->scb), sizeof(struct i596_scb));
971 spin_unlock_irqrestore (&lp->lock, flags);
973 if (lp->cmd_backlog > max_cmd_backlog) {
974 unsigned long tickssofar = jiffies - lp->last_cmd;
976 if (tickssofar < ticks_limit)
979 printk("%s: command unit timed out, status resetting.\n", dev->name);
987 /* this function makes a perfectly adequate probe... but we have a
989 static int i596_test(struct net_device *dev)
991 struct i596_private *lp = dev->priv;
995 tint = (volatile int *)(&(lp->scp));
996 data = virt_to_dma(lp,tint);
999 CHECK_WBACK(lp, tint, PAGE_SIZE);
1001 MPU_PORT(dev, 1, data);
1003 for(data = 1000000; data; data--) {
1004 CHECK_INV(lp, tint, PAGE_SIZE);
1010 printk("i596_test result %d\n", tint[1]);
1016 static int i596_open(struct net_device *dev)
1018 DEB(DEB_OPEN, printk("%s: i596_open() irq %d.\n", dev->name, dev->irq));
1020 if (request_irq(dev->irq, &i596_interrupt, 0, "i82596", dev)) {
1021 printk("%s: IRQ %d not free\n", dev->name, dev->irq);
1027 if (init_i596_mem(dev)) {
1028 printk("%s: Failed to init memory\n", dev->name);
1029 goto out_remove_rx_bufs;
1032 netif_start_queue(dev);
1037 remove_rx_bufs(dev);
1038 free_irq(dev->irq, dev);
1043 static void i596_tx_timeout (struct net_device *dev)
1045 struct i596_private *lp = dev->priv;
1047 /* Transmitter timeout, serious problems. */
1048 DEB(DEB_ERRORS, printk("%s: transmit timed out, status resetting.\n",
1051 lp->stats.tx_errors++;
1053 /* Try to restart the adaptor */
1054 if (lp->last_restart == lp->stats.tx_packets) {
1055 DEB(DEB_ERRORS, printk("Resetting board.\n"));
1056 /* Shutdown and restart */
1057 i596_reset (dev, lp);
1059 /* Issue a channel attention signal */
1060 DEB(DEB_ERRORS, printk("Kicking board.\n"));
1061 lp->scb.command = CUC_START | RX_START;
1062 CHECK_WBACK_INV(lp, &(lp->scb), sizeof(struct i596_scb));
1064 lp->last_restart = lp->stats.tx_packets;
1067 dev->trans_start = jiffies;
1068 netif_wake_queue (dev);
1072 static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev)
1074 struct i596_private *lp = dev->priv;
1075 struct tx_cmd *tx_cmd;
1076 struct i596_tbd *tbd;
1077 short length = skb->len;
1078 dev->trans_start = jiffies;
1080 DEB(DEB_STARTTX, printk("%s: i596_start_xmit(%x,%p) called\n", dev->name,
1081 skb->len, skb->data));
1083 if (length < ETH_ZLEN) {
1084 if (skb_padto(skb, ETH_ZLEN))
1089 netif_stop_queue(dev);
1091 tx_cmd = lp->tx_cmds + lp->next_tx_cmd;
1092 tbd = lp->tbds + lp->next_tx_cmd;
1094 if (tx_cmd->cmd.command) {
1095 DEB(DEB_ERRORS, printk("%s: xmit ring full, dropping packet.\n",
1097 lp->stats.tx_dropped++;
1101 if (++lp->next_tx_cmd == TX_RING_SIZE)
1102 lp->next_tx_cmd = 0;
1103 tx_cmd->tbd = WSWAPtbd(virt_to_dma(lp,tbd));
1104 tbd->next = I596_NULL;
1106 tx_cmd->cmd.command = CMD_FLEX | CmdTx;
1112 tbd->size = EOF | length;
1114 tx_cmd->dma_addr = dma_map_single(lp->dev, skb->data, skb->len,
1116 tbd->data = WSWAPchar(tx_cmd->dma_addr);
1118 DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued"));
1119 CHECK_WBACK_INV(lp, tx_cmd, sizeof(struct tx_cmd));
1120 CHECK_WBACK_INV(lp, tbd, sizeof(struct i596_tbd));
1121 i596_add_cmd(dev, &tx_cmd->cmd);
1123 lp->stats.tx_packets++;
1124 lp->stats.tx_bytes += length;
1127 netif_start_queue(dev);
1132 static void print_eth(unsigned char *add, char *str)
1136 printk("i596 0x%p, ", add);
1137 for (i = 0; i < 6; i++)
1138 printk(" %02X", add[i + 6]);
1140 for (i = 0; i < 6; i++)
1141 printk(" %02X", add[i]);
1142 printk(" %02X%02X, %s\n", add[12], add[13], str);
1146 #define LAN_PROM_ADDR 0xF0810000
1148 static int __devinit i82596_probe(struct net_device *dev,
1149 struct device *gen_dev)
1152 struct i596_private *lp;
1154 dma_addr_t dma_addr;
1156 /* This lot is ensure things have been cache line aligned. */
1157 BUILD_BUG_ON(sizeof(struct i596_rfd) != 32);
1158 BUILD_BUG_ON(sizeof(struct i596_rbd) & 31);
1159 BUILD_BUG_ON(sizeof(struct tx_cmd) & 31);
1160 BUILD_BUG_ON(sizeof(struct i596_tbd) != 32);
1162 BUILD_BUG_ON(sizeof(struct i596_private) > 4096);
1165 if (!dev->base_addr || !dev->irq)
1168 if (pdc_lan_station_id(eth_addr, dev->base_addr)) {
1169 for (i=0; i < 6; i++) {
1170 eth_addr[i] = gsc_readb(LAN_PROM_ADDR + i);
1172 printk(KERN_INFO "%s: MAC of HP700 LAN read from EEPROM\n", __FILE__);
1175 dev->mem_start = (unsigned long) dma_alloc_noncoherent(gen_dev,
1176 sizeof(struct i596_private), &dma_addr, GFP_KERNEL);
1177 if (!dev->mem_start) {
1178 printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__);
1182 for (i = 0; i < 6; i++)
1183 dev->dev_addr[i] = eth_addr[i];
1185 /* The 82596-specific entries in the device structure. */
1186 dev->open = i596_open;
1187 dev->stop = i596_close;
1188 dev->hard_start_xmit = i596_start_xmit;
1189 dev->get_stats = i596_get_stats;
1190 dev->set_multicast_list = set_multicast_list;
1191 dev->tx_timeout = i596_tx_timeout;
1192 dev->watchdog_timeo = TX_TIMEOUT;
1193 #ifdef CONFIG_NET_POLL_CONTROLLER
1194 dev->poll_controller = i596_poll_controller;
1197 dev->priv = (void *)(dev->mem_start);
1200 memset(lp, 0, sizeof(struct i596_private));
1202 lp->scb.command = 0;
1203 lp->scb.cmd = I596_NULL;
1204 lp->scb.rfd = I596_NULL;
1205 spin_lock_init(&lp->lock);
1206 lp->dma_addr = dma_addr;
1209 CHECK_WBACK_INV(lp, dev->mem_start, sizeof(struct i596_private));
1211 i = register_netdev(dev);
1214 dma_free_noncoherent(lp->dev, sizeof(struct i596_private),
1215 (void *)dev->mem_start, lp->dma_addr);
1219 DEB(DEB_PROBE, printk(KERN_INFO "%s: 82596 at %#3lx,", dev->name, dev->base_addr));
1220 for (i = 0; i < 6; i++)
1221 DEB(DEB_PROBE, printk(" %2.2X", dev->dev_addr[i]));
1222 DEB(DEB_PROBE, printk(" IRQ %d.\n", dev->irq));
1223 DEB(DEB_INIT, printk(KERN_INFO "%s: lp at 0x%p (%d bytes), lp->scb at 0x%p\n",
1224 dev->name, lp, (int)sizeof(struct i596_private), &lp->scb));
1229 #ifdef CONFIG_NET_POLL_CONTROLLER
1230 static void i596_poll_controller(struct net_device *dev)
1232 disable_irq(dev->irq);
1233 i596_interrupt(dev->irq, dev);
1234 enable_irq(dev->irq);
1238 static irqreturn_t i596_interrupt(int irq, void *dev_id)
1240 struct net_device *dev = dev_id;
1241 struct i596_private *lp;
1242 unsigned short status, ack_cmd = 0;
1245 printk("%s: irq %d for unknown device.\n", __FUNCTION__, irq);
1251 spin_lock (&lp->lock);
1253 wait_cmd(dev, lp, 100, "i596 interrupt, timeout");
1254 status = lp->scb.status;
1256 DEB(DEB_INTS, printk("%s: i596 interrupt, IRQ %d, status %4.4x.\n",
1257 dev->name, irq, status));
1259 ack_cmd = status & 0xf000;
1262 DEB(DEB_ERRORS, printk("%s: interrupt with no events\n", dev->name));
1263 spin_unlock (&lp->lock);
1267 if ((status & 0x8000) || (status & 0x2000)) {
1268 struct i596_cmd *ptr;
1270 if ((status & 0x8000))
1271 DEB(DEB_INTS, printk("%s: i596 interrupt completed command.\n", dev->name));
1272 if ((status & 0x2000))
1273 DEB(DEB_INTS, printk("%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700));
1275 while (lp->cmd_head != NULL) {
1276 CHECK_INV(lp, lp->cmd_head, sizeof(struct i596_cmd));
1277 if (!(lp->cmd_head->status & STAT_C))
1282 DEB(DEB_STATUS, printk("cmd_head->status = %04x, ->command = %04x\n",
1283 lp->cmd_head->status, lp->cmd_head->command));
1284 lp->cmd_head = ptr->v_next;
1287 switch ((ptr->command) & 0x7) {
1290 struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
1291 struct sk_buff *skb = tx_cmd->skb;
1293 if ((ptr->status) & STAT_OK) {
1294 DEB(DEB_TXADDR, print_eth(skb->data, "tx-done"));
1296 lp->stats.tx_errors++;
1297 if ((ptr->status) & 0x0020)
1298 lp->stats.collisions++;
1299 if (!((ptr->status) & 0x0040))
1300 lp->stats.tx_heartbeat_errors++;
1301 if ((ptr->status) & 0x0400)
1302 lp->stats.tx_carrier_errors++;
1303 if ((ptr->status) & 0x0800)
1304 lp->stats.collisions++;
1305 if ((ptr->status) & 0x1000)
1306 lp->stats.tx_aborted_errors++;
1308 dma_unmap_single(lp->dev, tx_cmd->dma_addr, skb->len, DMA_TO_DEVICE);
1309 dev_kfree_skb_irq(skb);
1311 tx_cmd->cmd.command = 0; /* Mark free */
1316 unsigned short status = ((struct tdr_cmd *)ptr)->status;
1318 if (status & 0x8000) {
1319 DEB(DEB_ANY, printk("%s: link ok.\n", dev->name));
1321 if (status & 0x4000)
1322 printk("%s: Transceiver problem.\n", dev->name);
1323 if (status & 0x2000)
1324 printk("%s: Termination problem.\n", dev->name);
1325 if (status & 0x1000)
1326 printk("%s: Short circuit.\n", dev->name);
1328 DEB(DEB_TDR, printk("%s: Time %d.\n", dev->name, status & 0x07ff));
1333 /* Zap command so set_multicast_list() knows it is free */
1338 ptr->b_next = I596_NULL;
1339 CHECK_WBACK(lp, ptr, sizeof(struct i596_cmd));
1340 lp->last_cmd = jiffies;
1343 /* This mess is arranging that only the last of any outstanding
1344 * commands has the interrupt bit set. Should probably really
1345 * only add to the cmd queue when the CU is stopped.
1348 while ((ptr != NULL) && (ptr != lp->cmd_tail)) {
1349 struct i596_cmd *prev = ptr;
1351 ptr->command &= 0x1fff;
1353 CHECK_WBACK_INV(lp, prev, sizeof(struct i596_cmd));
1356 if ((lp->cmd_head != NULL))
1357 ack_cmd |= CUC_START;
1358 lp->scb.cmd = WSWAPcmd(virt_to_dma(lp,&lp->cmd_head->status));
1359 CHECK_WBACK_INV(lp, &lp->scb, sizeof(struct i596_scb));
1361 if ((status & 0x1000) || (status & 0x4000)) {
1362 if ((status & 0x4000))
1363 DEB(DEB_INTS, printk("%s: i596 interrupt received a frame.\n", dev->name));
1365 /* Only RX_START if stopped - RGH 07-07-96 */
1366 if (status & 0x1000) {
1367 if (netif_running(dev)) {
1368 DEB(DEB_ERRORS, printk("%s: i596 interrupt receive unit inactive, status 0x%x\n", dev->name, status));
1369 ack_cmd |= RX_START;
1370 lp->stats.rx_errors++;
1371 lp->stats.rx_fifo_errors++;
1372 rebuild_rx_bufs(dev);
1376 wait_cmd(dev, lp, 100, "i596 interrupt, timeout");
1377 lp->scb.command = ack_cmd;
1378 CHECK_WBACK(lp, &lp->scb, sizeof(struct i596_scb));
1380 /* DANGER: I suspect that some kind of interrupt
1381 acknowledgement aside from acking the 82596 might be needed
1382 here... but it's running acceptably without */
1386 wait_cmd(dev, lp, 100, "i596 interrupt, exit timeout");
1387 DEB(DEB_INTS, printk("%s: exiting interrupt.\n", dev->name));
1389 spin_unlock (&lp->lock);
1393 static int i596_close(struct net_device *dev)
1395 struct i596_private *lp = dev->priv;
1396 unsigned long flags;
1398 netif_stop_queue(dev);
1400 DEB(DEB_INIT, printk("%s: Shutting down ethercard, status was %4.4x.\n",
1401 dev->name, lp->scb.status));
1403 spin_lock_irqsave(&lp->lock, flags);
1405 wait_cmd(dev, lp, 100, "close1 timed out");
1406 lp->scb.command = CUC_ABORT | RX_ABORT;
1407 CHECK_WBACK(lp, &lp->scb, sizeof(struct i596_scb));
1411 wait_cmd(dev, lp, 100, "close2 timed out");
1412 spin_unlock_irqrestore(&lp->lock, flags);
1413 DEB(DEB_STRUCT,i596_display_data(dev));
1414 i596_cleanup_cmd(dev,lp);
1416 disable_irq(dev->irq);
1418 free_irq(dev->irq, dev);
1419 remove_rx_bufs(dev);
1424 static struct net_device_stats *
1425 i596_get_stats(struct net_device *dev)
1427 struct i596_private *lp = dev->priv;
1433 * Set or clear the multicast filter for this adaptor.
1436 static void set_multicast_list(struct net_device *dev)
1438 struct i596_private *lp = dev->priv;
1439 int config = 0, cnt;
1441 DEB(DEB_MULTI, printk("%s: set multicast list, %d entries, promisc %s, allmulti %s\n",
1442 dev->name, dev->mc_count, dev->flags & IFF_PROMISC ? "ON" : "OFF",
1443 dev->flags & IFF_ALLMULTI ? "ON" : "OFF"));
1445 if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8] & 0x01)) {
1446 lp->cf_cmd.i596_config[8] |= 0x01;
1449 if (!(dev->flags & IFF_PROMISC) && (lp->cf_cmd.i596_config[8] & 0x01)) {
1450 lp->cf_cmd.i596_config[8] &= ~0x01;
1453 if ((dev->flags & IFF_ALLMULTI) && (lp->cf_cmd.i596_config[11] & 0x20)) {
1454 lp->cf_cmd.i596_config[11] &= ~0x20;
1457 if (!(dev->flags & IFF_ALLMULTI) && !(lp->cf_cmd.i596_config[11] & 0x20)) {
1458 lp->cf_cmd.i596_config[11] |= 0x20;
1462 if (lp->cf_cmd.cmd.command)
1463 printk("%s: config change request already queued\n",
1466 lp->cf_cmd.cmd.command = CmdConfigure;
1467 CHECK_WBACK_INV(lp, &lp->cf_cmd, sizeof(struct cf_cmd));
1468 i596_add_cmd(dev, &lp->cf_cmd.cmd);
1472 cnt = dev->mc_count;
1473 if (cnt > MAX_MC_CNT)
1476 printk("%s: Only %d multicast addresses supported",
1480 if (dev->mc_count > 0) {
1481 struct dev_mc_list *dmi;
1486 cmd->cmd.command = CmdMulticastList;
1487 cmd->mc_cnt = dev->mc_count * 6;
1489 for (dmi = dev->mc_list; cnt && dmi != NULL; dmi = dmi->next, cnt--, cp += 6) {
1490 memcpy(cp, dmi->dmi_addr, 6);
1492 DEB(DEB_MULTI, printk("%s: Adding address %02x:%02x:%02x:%02x:%02x:%02x\n",
1493 dev->name, cp[0],cp[1],cp[2],cp[3],cp[4],cp[5]));
1495 CHECK_WBACK_INV(lp, &lp->mc_cmd, sizeof(struct mc_cmd));
1496 i596_add_cmd(dev, &cmd->cmd);
1500 static int debug = -1;
1501 module_param(debug, int, 0);
1502 MODULE_PARM_DESC(debug, "lasi_82596 debug mask");
1504 static int num_drivers;
1505 static struct net_device *netdevs[MAX_DRIVERS];
1507 static int __devinit
1508 lan_init_chip(struct parisc_device *dev)
1510 struct net_device *netdevice;
1513 if (num_drivers >= MAX_DRIVERS) {
1514 /* max count of possible i82596 drivers reached */
1518 if (num_drivers == 0)
1519 printk(KERN_INFO LASI_82596_DRIVER_VERSION "\n");
1522 printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n",
1523 __FILE__, dev->hpa.start);
1527 printk(KERN_INFO "Found i82596 at 0x%lx, IRQ %d\n", dev->hpa.start,
1530 netdevice = alloc_etherdev(0);
1534 netdevice->base_addr = dev->hpa.start;
1535 netdevice->irq = dev->irq;
1537 retval = i82596_probe(netdevice, &dev->dev);
1539 free_netdev(netdevice);
1543 if (dev->id.sversion == 0x72) {
1544 ((struct i596_private *)netdevice->priv)->options = OPT_SWAP_PORT;
1547 netdevs[num_drivers++] = netdevice;
1553 static struct parisc_device_id lan_tbl[] = {
1554 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008a },
1555 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00072 },
1559 MODULE_DEVICE_TABLE(parisc, lan_tbl);
1561 static struct parisc_driver lan_driver = {
1562 .name = "lasi_82596",
1563 .id_table = lan_tbl,
1564 .probe = lan_init_chip,
1567 static int __devinit lasi_82596_init(void)
1571 return register_parisc_driver(&lan_driver);
1574 module_init(lasi_82596_init);
1576 static void __exit lasi_82596_exit(void)
1580 for (i=0; i<MAX_DRIVERS; i++) {
1581 struct i596_private *lp;
1582 struct net_device *netdevice;
1584 netdevice = netdevs[i];
1588 unregister_netdev(netdevice);
1590 lp = netdevice->priv;
1591 dma_free_noncoherent(lp->dev, sizeof(struct i596_private),
1592 (void *)netdevice->mem_start, lp->dma_addr);
1593 free_netdev(netdevice);
1597 unregister_parisc_driver(&lan_driver);
1600 module_exit(lasi_82596_exit);