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authorThomas Bogendoerfer <tsbogend@alpha.franken.de>2007-06-27 18:46:22 -0400
committerJeff Garzik <jeff@garzik.org>2007-07-08 22:16:45 -0400
commit2187f287e2827556210e96c619f76f0f9dd928f0 (patch)
tree663857a4e3b4604932fad1bffd6db2ab1528460f /drivers/net/lasi_82596.c
parentd1d25aaba85fd24ab18b0a4d22f19be02aac65c9 (diff)
Extract chip specific code out of lasi_82596.c
Changes to last version: - use netdev_alloc_skb - make init_rx_bufs just fail and not panic, if skb alloc fails - don/t free_irq, if request_irq failed Thomas. Extracted chip specific code out of lasi_82596.c and placed into a lib82596.c to make it usable for other 82596 drivers Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/lasi_82596.c')
-rw-r--r--drivers/net/lasi_82596.c1460
1 files changed, 49 insertions, 1411 deletions
diff --git a/drivers/net/lasi_82596.c b/drivers/net/lasi_82596.c
index 741780e14b2c..efbae4b8398e 100644
--- a/drivers/net/lasi_82596.c
+++ b/drivers/net/lasi_82596.c
@@ -86,93 +86,36 @@
86#include <linux/dma-mapping.h> 86#include <linux/dma-mapping.h>
87 87
88#include <asm/io.h> 88#include <asm/io.h>
89#include <asm/pgtable.h>
90#include <asm/irq.h> 89#include <asm/irq.h>
91#include <asm/pdc.h> 90#include <asm/pdc.h>
92#include <asm/cache.h>
93#include <asm/parisc-device.h> 91#include <asm/parisc-device.h>
94 92
95#define LASI_82596_DRIVER_VERSION "LASI 82596 driver - Revision: 1.30" 93#define LASI_82596_DRIVER_VERSION "LASI 82596 driver - Revision: 1.30"
96 94
97/* DEBUG flags
98 */
99
100#define DEB_INIT 0x0001
101#define DEB_PROBE 0x0002
102#define DEB_SERIOUS 0x0004
103#define DEB_ERRORS 0x0008
104#define DEB_MULTI 0x0010
105#define DEB_TDR 0x0020
106#define DEB_OPEN 0x0040
107#define DEB_RESET 0x0080
108#define DEB_ADDCMD 0x0100
109#define DEB_STATUS 0x0200
110#define DEB_STARTTX 0x0400
111#define DEB_RXADDR 0x0800
112#define DEB_TXADDR 0x1000
113#define DEB_RXFRAME 0x2000
114#define DEB_INTS 0x4000
115#define DEB_STRUCT 0x8000
116#define DEB_ANY 0xffff
117
118
119#define DEB(x,y) if (i596_debug & (x)) { y; }
120
121
122#define CHECK_WBACK(priv, addr,len) \
123 do { dma_cache_sync((priv)->dev, (void *)addr, len, DMA_TO_DEVICE); } while (0)
124
125#define CHECK_INV(priv, addr,len) \
126 do { dma_cache_sync((priv)->dev, (void *)addr, len, DMA_FROM_DEVICE); } while(0)
127
128#define CHECK_WBACK_INV(priv, addr,len) \
129 do { dma_cache_sync((priv)->dev, (void *)addr, len, DMA_BIDIRECTIONAL); } while (0)
130
131
132#define PA_I82596_RESET 0 /* Offsets relative to LASI-LAN-Addr.*/ 95#define PA_I82596_RESET 0 /* Offsets relative to LASI-LAN-Addr.*/
133#define PA_CPU_PORT_L_ACCESS 4 96#define PA_CPU_PORT_L_ACCESS 4
134#define PA_CHANNEL_ATTENTION 8 97#define PA_CHANNEL_ATTENTION 8
135 98
99#define OPT_SWAP_PORT 0x0001 /* Need to wordswp on the MPU port */
136 100
137/* 101#define DMA_ALLOC dma_alloc_noncoherent
138 * Define various macros for Channel Attention, word swapping etc., dependent 102#define DMA_FREE dma_free_noncoherent
139 * on architecture. MVME and BVME are 680x0 based, otherwise it is Intel. 103#define DMA_WBACK(ndev, addr, len) \
140 */ 104 do { dma_cache_sync((ndev)->dev.parent, (void *)addr, len, DMA_TO_DEVICE); } while (0)
141 105
142#ifdef __BIG_ENDIAN 106#define DMA_INV(ndev, addr, len) \
143#define WSWAPrfd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) 107 do { dma_cache_sync((ndev)->dev.parent, (void *)addr, len, DMA_FROM_DEVICE); } while (0)
144#define WSWAPrbd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
145#define WSWAPiscp(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
146#define WSWAPscb(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
147#define WSWAPcmd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
148#define WSWAPtbd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
149#define WSWAPchar(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
150#define ISCP_BUSY 0x00010000
151#define MACH_IS_APRICOT 0
152#else
153#define WSWAPrfd(x) ((struct i596_rfd *)(x))
154#define WSWAPrbd(x) ((struct i596_rbd *)(x))
155#define WSWAPiscp(x) ((struct i596_iscp *)(x))
156#define WSWAPscb(x) ((struct i596_scb *)(x))
157#define WSWAPcmd(x) ((struct i596_cmd *)(x))
158#define WSWAPtbd(x) ((struct i596_tbd *)(x))
159#define WSWAPchar(x) ((char *)(x))
160#define ISCP_BUSY 0x0001
161#define MACH_IS_APRICOT 1
162#endif
163 108
164/* 109#define DMA_WBACK_INV(ndev, addr, len) \
165 * The MPU_PORT command allows direct access to the 82596. With PORT access 110 do { dma_cache_sync((ndev)->dev.parent, (void *)addr, len, DMA_BIDIRECTIONAL); } while (0)
166 * the following commands are available (p5-18). The 32-bit port command 111
167 * must be word-swapped with the most significant word written first. 112#define SYSBUS 0x0000006c;
168 * This only applies to VME boards. 113
169 */ 114/* big endian CPU, 82596 "big" endian mode */
170#define PORT_RESET 0x00 /* reset 82596 */ 115#define SWAP32(x) (((u32)(x)<<16) | ((((u32)(x)))>>16))
171#define PORT_SELFTEST 0x01 /* selftest */ 116#define SWAP16(x) (x)
172#define PORT_ALTSCP 0x02 /* alternate SCB address */
173#define PORT_ALTDUMP 0x03 /* Alternate DUMP address */
174 117
175static int i596_debug = (DEB_SERIOUS|DEB_PROBE); 118#include "lib82596.c"
176 119
177MODULE_AUTHOR("Richard Hirst"); 120MODULE_AUTHOR("Richard Hirst");
178MODULE_DESCRIPTION("i82596 driver"); 121MODULE_DESCRIPTION("i82596 driver");
@@ -180,255 +123,15 @@ MODULE_LICENSE("GPL");
180module_param(i596_debug, int, 0); 123module_param(i596_debug, int, 0);
181MODULE_PARM_DESC(i596_debug, "lasi_82596 debug mask"); 124MODULE_PARM_DESC(i596_debug, "lasi_82596 debug mask");
182 125
183/* Copy frames shorter than rx_copybreak, otherwise pass on up in 126static inline void ca(struct net_device *dev)
184 * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha).
185 */
186static int rx_copybreak = 100;
187
188#define MAX_DRIVERS 4 /* max count of drivers */
189
190#define PKT_BUF_SZ 1536
191#define MAX_MC_CNT 64
192
193#define I596_NULL ((u32)0xffffffff)
194
195#define CMD_EOL 0x8000 /* The last command of the list, stop. */
196#define CMD_SUSP 0x4000 /* Suspend after doing cmd. */
197#define CMD_INTR 0x2000 /* Interrupt after doing cmd. */
198
199#define CMD_FLEX 0x0008 /* Enable flexible memory model */
200
201enum commands {
202 CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3,
203 CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7
204};
205
206#define STAT_C 0x8000 /* Set to 0 after execution */
207#define STAT_B 0x4000 /* Command being executed */
208#define STAT_OK 0x2000 /* Command executed ok */
209#define STAT_A 0x1000 /* Command aborted */
210
211#define CUC_START 0x0100
212#define CUC_RESUME 0x0200
213#define CUC_SUSPEND 0x0300
214#define CUC_ABORT 0x0400
215#define RX_START 0x0010
216#define RX_RESUME 0x0020
217#define RX_SUSPEND 0x0030
218#define RX_ABORT 0x0040
219
220#define TX_TIMEOUT 5
221
222#define OPT_SWAP_PORT 0x0001 /* Need to wordswp on the MPU port */
223
224
225struct i596_reg {
226 unsigned short porthi;
227 unsigned short portlo;
228 u32 ca;
229};
230
231#define EOF 0x8000
232#define SIZE_MASK 0x3fff
233
234struct i596_tbd {
235 unsigned short size;
236 unsigned short pad;
237 dma_addr_t next;
238 dma_addr_t data;
239 u32 cache_pad[5]; /* Total 32 bytes... */
240};
241
242/* The command structure has two 'next' pointers; v_next is the address of
243 * the next command as seen by the CPU, b_next is the address of the next
244 * command as seen by the 82596. The b_next pointer, as used by the 82596
245 * always references the status field of the next command, rather than the
246 * v_next field, because the 82596 is unaware of v_next. It may seem more
247 * logical to put v_next at the end of the structure, but we cannot do that
248 * because the 82596 expects other fields to be there, depending on command
249 * type.
250 */
251
252struct i596_cmd {
253 struct i596_cmd *v_next; /* Address from CPUs viewpoint */
254 unsigned short status;
255 unsigned short command;
256 dma_addr_t b_next; /* Address from i596 viewpoint */
257};
258
259struct tx_cmd {
260 struct i596_cmd cmd;
261 dma_addr_t tbd;
262 unsigned short size;
263 unsigned short pad;
264 struct sk_buff *skb; /* So we can free it after tx */
265 dma_addr_t dma_addr;
266#ifdef __LP64__
267 u32 cache_pad[6]; /* Total 64 bytes... */
268#else
269 u32 cache_pad[1]; /* Total 32 bytes... */
270#endif
271};
272
273struct tdr_cmd {
274 struct i596_cmd cmd;
275 unsigned short status;
276 unsigned short pad;
277};
278
279struct mc_cmd {
280 struct i596_cmd cmd;
281 short mc_cnt;
282 char mc_addrs[MAX_MC_CNT*6];
283};
284
285struct sa_cmd {
286 struct i596_cmd cmd;
287 char eth_addr[8];
288};
289
290struct cf_cmd {
291 struct i596_cmd cmd;
292 char i596_config[16];
293};
294
295struct i596_rfd {
296 unsigned short stat;
297 unsigned short cmd;
298 dma_addr_t b_next; /* Address from i596 viewpoint */
299 dma_addr_t rbd;
300 unsigned short count;
301 unsigned short size;
302 struct i596_rfd *v_next; /* Address from CPUs viewpoint */
303 struct i596_rfd *v_prev;
304#ifndef __LP64__
305 u32 cache_pad[2]; /* Total 32 bytes... */
306#endif
307};
308
309struct i596_rbd {
310 /* hardware data */
311 unsigned short count;
312 unsigned short zero1;
313 dma_addr_t b_next;
314 dma_addr_t b_data; /* Address from i596 viewpoint */
315 unsigned short size;
316 unsigned short zero2;
317 /* driver data */
318 struct sk_buff *skb;
319 struct i596_rbd *v_next;
320 dma_addr_t b_addr; /* This rbd addr from i596 view */
321 unsigned char *v_data; /* Address from CPUs viewpoint */
322 /* Total 32 bytes... */
323#ifdef __LP64__
324 u32 cache_pad[4];
325#endif
326};
327
328/* These values as chosen so struct i596_private fits in one page... */
329
330#define TX_RING_SIZE 32
331#define RX_RING_SIZE 16
332
333struct i596_scb {
334 unsigned short status;
335 unsigned short command;
336 dma_addr_t cmd;
337 dma_addr_t rfd;
338 u32 crc_err;
339 u32 align_err;
340 u32 resource_err;
341 u32 over_err;
342 u32 rcvdt_err;
343 u32 short_err;
344 unsigned short t_on;
345 unsigned short t_off;
346};
347
348struct i596_iscp {
349 u32 stat;
350 dma_addr_t scb;
351};
352
353struct i596_scp {
354 u32 sysbus;
355 u32 pad;
356 dma_addr_t iscp;
357};
358
359struct i596_private {
360 volatile struct i596_scp scp __attribute__((aligned(32)));
361 volatile struct i596_iscp iscp __attribute__((aligned(32)));
362 volatile struct i596_scb scb __attribute__((aligned(32)));
363 struct sa_cmd sa_cmd __attribute__((aligned(32)));
364 struct cf_cmd cf_cmd __attribute__((aligned(32)));
365 struct tdr_cmd tdr_cmd __attribute__((aligned(32)));
366 struct mc_cmd mc_cmd __attribute__((aligned(32)));
367 struct i596_rfd rfds[RX_RING_SIZE] __attribute__((aligned(32)));
368 struct i596_rbd rbds[RX_RING_SIZE] __attribute__((aligned(32)));
369 struct tx_cmd tx_cmds[TX_RING_SIZE] __attribute__((aligned(32)));
370 struct i596_tbd tbds[TX_RING_SIZE] __attribute__((aligned(32)));
371 u32 stat;
372 int last_restart;
373 struct i596_rfd *rfd_head;
374 struct i596_rbd *rbd_head;
375 struct i596_cmd *cmd_tail;
376 struct i596_cmd *cmd_head;
377 int cmd_backlog;
378 u32 last_cmd;
379 struct net_device_stats stats;
380 int next_tx_cmd;
381 int options;
382 spinlock_t lock;
383 dma_addr_t dma_addr;
384 struct device *dev;
385};
386
387static const char init_setup[] =
388{
389 0x8E, /* length, prefetch on */
390 0xC8, /* fifo to 8, monitor off */
391 0x80, /* don't save bad frames */
392 0x2E, /* No source address insertion, 8 byte preamble */
393 0x00, /* priority and backoff defaults */
394 0x60, /* interframe spacing */
395 0x00, /* slot time LSB */
396 0xf2, /* slot time and retries */
397 0x00, /* promiscuous mode */
398 0x00, /* collision detect */
399 0x40, /* minimum frame length */
400 0xff,
401 0x00,
402 0x7f /* *multi IA */ };
403
404static int i596_open(struct net_device *dev);
405static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev);
406static irqreturn_t i596_interrupt(int irq, void *dev_id);
407static int i596_close(struct net_device *dev);
408static struct net_device_stats *i596_get_stats(struct net_device *dev);
409static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd);
410static void i596_tx_timeout (struct net_device *dev);
411static void print_eth(unsigned char *buf, char *str);
412static void set_multicast_list(struct net_device *dev);
413
414static int rx_ring_size = RX_RING_SIZE;
415static int ticks_limit = 100;
416static int max_cmd_backlog = TX_RING_SIZE-1;
417
418#ifdef CONFIG_NET_POLL_CONTROLLER
419static void i596_poll_controller(struct net_device *dev);
420#endif
421
422
423static inline void CA(struct net_device *dev)
424{ 127{
425 gsc_writel(0, dev->base_addr + PA_CHANNEL_ATTENTION); 128 gsc_writel(0, dev->base_addr + PA_CHANNEL_ATTENTION);
426} 129}
427 130
428 131
429static inline void MPU_PORT(struct net_device *dev, int c, dma_addr_t x) 132static void mpu_port(struct net_device *dev, int c, dma_addr_t x)
430{ 133{
431 struct i596_private *lp = dev->priv; 134 struct i596_private *lp = netdev_priv(dev);
432 135
433 u32 v = (u32) (c) | (u32) (x); 136 u32 v = (u32) (c) | (u32) (x);
434 u16 a, b; 137 u16 a, b;
@@ -446,1078 +149,15 @@ static inline void MPU_PORT(struct net_device *dev, int c, dma_addr_t x)
446 gsc_writel(b, dev->base_addr + PA_CPU_PORT_L_ACCESS); 149 gsc_writel(b, dev->base_addr + PA_CPU_PORT_L_ACCESS);
447} 150}
448 151
449
450static inline int wait_istat(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
451{
452 CHECK_INV(lp, &(lp->iscp), sizeof(struct i596_iscp));
453 while (--delcnt && lp->iscp.stat) {
454 udelay(10);
455 CHECK_INV(lp, &(lp->iscp), sizeof(struct i596_iscp));
456 }
457 if (!delcnt) {
458 printk("%s: %s, iscp.stat %04x, didn't clear\n",
459 dev->name, str, lp->iscp.stat);
460 return -1;
461 }
462 else
463 return 0;
464}
465
466
467static inline int wait_cmd(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
468{
469 CHECK_INV(lp, &(lp->scb), sizeof(struct i596_scb));
470 while (--delcnt && lp->scb.command) {
471 udelay(10);
472 CHECK_INV(lp, &(lp->scb), sizeof(struct i596_scb));
473 }
474 if (!delcnt) {
475 printk("%s: %s, status %4.4x, cmd %4.4x.\n",
476 dev->name, str, lp->scb.status, lp->scb.command);
477 return -1;
478 }
479 else
480 return 0;
481}
482
483
484static void i596_display_data(struct net_device *dev)
485{
486 struct i596_private *lp = dev->priv;
487 struct i596_cmd *cmd;
488 struct i596_rfd *rfd;
489 struct i596_rbd *rbd;
490
491 printk("lp and scp at %p, .sysbus = %08x, .iscp = %08x\n",
492 &lp->scp, lp->scp.sysbus, lp->scp.iscp);
493 printk("iscp at %p, iscp.stat = %08x, .scb = %08x\n",
494 &lp->iscp, lp->iscp.stat, lp->iscp.scb);
495 printk("scb at %p, scb.status = %04x, .command = %04x,"
496 " .cmd = %08x, .rfd = %08x\n",
497 &lp->scb, lp->scb.status, lp->scb.command,
498 lp->scb.cmd, lp->scb.rfd);
499 printk(" errors: crc %x, align %x, resource %x,"
500 " over %x, rcvdt %x, short %x\n",
501 lp->scb.crc_err, lp->scb.align_err, lp->scb.resource_err,
502 lp->scb.over_err, lp->scb.rcvdt_err, lp->scb.short_err);
503 cmd = lp->cmd_head;
504 while (cmd != NULL) {
505 printk("cmd at %p, .status = %04x, .command = %04x, .b_next = %08x\n",
506 cmd, cmd->status, cmd->command, cmd->b_next);
507 cmd = cmd->v_next;
508 }
509 rfd = lp->rfd_head;
510 printk("rfd_head = %p\n", rfd);
511 do {
512 printk(" %p .stat %04x, .cmd %04x, b_next %08x, rbd %08x,"
513 " count %04x\n",
514 rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd,
515 rfd->count);
516 rfd = rfd->v_next;
517 } while (rfd != lp->rfd_head);
518 rbd = lp->rbd_head;
519 printk("rbd_head = %p\n", rbd);
520 do {
521 printk(" %p .count %04x, b_next %08x, b_data %08x, size %04x\n",
522 rbd, rbd->count, rbd->b_next, rbd->b_data, rbd->size);
523 rbd = rbd->v_next;
524 } while (rbd != lp->rbd_head);
525 CHECK_INV(lp, lp, sizeof(struct i596_private));
526}
527
528
529#if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
530static void i596_error(int irq, void *dev_id)
531{
532 struct net_device *dev = dev_id;
533 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
534
535 pcc2[0x28] = 1;
536 pcc2[0x2b] = 0x1d;
537 printk("%s: Error interrupt\n", dev->name);
538 i596_display_data(dev);
539}
540#endif
541
542#define virt_to_dma(lp,v) ((lp)->dma_addr + (dma_addr_t)((unsigned long)(v)-(unsigned long)(lp)))
543
544static inline void init_rx_bufs(struct net_device *dev)
545{
546 struct i596_private *lp = dev->priv;
547 int i;
548 struct i596_rfd *rfd;
549 struct i596_rbd *rbd;
550
551 /* First build the Receive Buffer Descriptor List */
552
553 for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
554 dma_addr_t dma_addr;
555 struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ + 4);
556
557 if (skb == NULL)
558 panic("%s: alloc_skb() failed", __FILE__);
559 skb_reserve(skb, 2);
560 dma_addr = dma_map_single(lp->dev, skb->data,PKT_BUF_SZ,
561 DMA_FROM_DEVICE);
562 skb->dev = dev;
563 rbd->v_next = rbd+1;
564 rbd->b_next = WSWAPrbd(virt_to_dma(lp,rbd+1));
565 rbd->b_addr = WSWAPrbd(virt_to_dma(lp,rbd));
566 rbd->skb = skb;
567 rbd->v_data = skb->data;
568 rbd->b_data = WSWAPchar(dma_addr);
569 rbd->size = PKT_BUF_SZ;
570 }
571 lp->rbd_head = lp->rbds;
572 rbd = lp->rbds + rx_ring_size - 1;
573 rbd->v_next = lp->rbds;
574 rbd->b_next = WSWAPrbd(virt_to_dma(lp,lp->rbds));
575
576 /* Now build the Receive Frame Descriptor List */
577
578 for (i = 0, rfd = lp->rfds; i < rx_ring_size; i++, rfd++) {
579 rfd->rbd = I596_NULL;
580 rfd->v_next = rfd+1;
581 rfd->v_prev = rfd-1;
582 rfd->b_next = WSWAPrfd(virt_to_dma(lp,rfd+1));
583 rfd->cmd = CMD_FLEX;
584 }
585 lp->rfd_head = lp->rfds;
586 lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds));
587 rfd = lp->rfds;
588 rfd->rbd = WSWAPrbd(virt_to_dma(lp,lp->rbd_head));
589 rfd->v_prev = lp->rfds + rx_ring_size - 1;
590 rfd = lp->rfds + rx_ring_size - 1;
591 rfd->v_next = lp->rfds;
592 rfd->b_next = WSWAPrfd(virt_to_dma(lp,lp->rfds));
593 rfd->cmd = CMD_EOL|CMD_FLEX;
594
595 CHECK_WBACK_INV(lp, lp, sizeof(struct i596_private));
596}
597
598static inline void remove_rx_bufs(struct net_device *dev)
599{
600 struct i596_private *lp = dev->priv;
601 struct i596_rbd *rbd;
602 int i;
603
604 for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
605 if (rbd->skb == NULL)
606 break;
607 dma_unmap_single(lp->dev,
608 (dma_addr_t)WSWAPchar(rbd->b_data),
609 PKT_BUF_SZ, DMA_FROM_DEVICE);
610 dev_kfree_skb(rbd->skb);
611 }
612}
613
614
615static void rebuild_rx_bufs(struct net_device *dev)
616{
617 struct i596_private *lp = dev->priv;
618 int i;
619
620 /* Ensure rx frame/buffer descriptors are tidy */
621
622 for (i = 0; i < rx_ring_size; i++) {
623 lp->rfds[i].rbd = I596_NULL;
624 lp->rfds[i].cmd = CMD_FLEX;
625 }
626 lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX;
627 lp->rfd_head = lp->rfds;
628 lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds));
629 lp->rbd_head = lp->rbds;
630 lp->rfds[0].rbd = WSWAPrbd(virt_to_dma(lp,lp->rbds));
631
632 CHECK_WBACK_INV(lp, lp, sizeof(struct i596_private));
633}
634
635
636static int init_i596_mem(struct net_device *dev)
637{
638 struct i596_private *lp = dev->priv;
639 unsigned long flags;
640
641 disable_irq(dev->irq); /* disable IRQs from LAN */
642 DEB(DEB_INIT,
643 printk("RESET 82596 port: %lx (with IRQ %d disabled)\n",
644 (dev->base_addr + PA_I82596_RESET),
645 dev->irq));
646
647 gsc_writel(0, (dev->base_addr + PA_I82596_RESET)); /* Hard Reset */
648 udelay(100); /* Wait 100us - seems to help */
649
650 /* change the scp address */
651
652 lp->last_cmd = jiffies;
653
654
655 lp->scp.sysbus = 0x0000006c;
656 lp->scp.iscp = WSWAPiscp(virt_to_dma(lp,&(lp->iscp)));
657 lp->iscp.scb = WSWAPscb(virt_to_dma(lp,&(lp->scb)));
658 lp->iscp.stat = ISCP_BUSY;
659 lp->cmd_backlog = 0;
660
661 lp->cmd_head = NULL;
662 lp->scb.cmd = I596_NULL;
663
664 DEB(DEB_INIT, printk("%s: starting i82596.\n", dev->name));
665
666 CHECK_WBACK(lp, &(lp->scp), sizeof(struct i596_scp));
667 CHECK_WBACK(lp, &(lp->iscp), sizeof(struct i596_iscp));
668
669 MPU_PORT(dev, PORT_ALTSCP, virt_to_dma(lp,&lp->scp));
670
671 CA(dev);
672
673 if (wait_istat(dev, lp, 1000, "initialization timed out"))
674 goto failed;
675 DEB(DEB_INIT, printk("%s: i82596 initialization successful\n", dev->name));
676
677 /* Ensure rx frame/buffer descriptors are tidy */
678 rebuild_rx_bufs(dev);
679
680 lp->scb.command = 0;
681 CHECK_WBACK(lp, &(lp->scb), sizeof(struct i596_scb));
682
683 enable_irq(dev->irq); /* enable IRQs from LAN */
684
685 DEB(DEB_INIT, printk("%s: queuing CmdConfigure\n", dev->name));
686 memcpy(lp->cf_cmd.i596_config, init_setup, sizeof(init_setup));
687 lp->cf_cmd.cmd.command = CmdConfigure;
688 CHECK_WBACK(lp, &(lp->cf_cmd), sizeof(struct cf_cmd));
689 i596_add_cmd(dev, &lp->cf_cmd.cmd);
690
691 DEB(DEB_INIT, printk("%s: queuing CmdSASetup\n", dev->name));
692 memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6);
693 lp->sa_cmd.cmd.command = CmdSASetup;
694 CHECK_WBACK(lp, &(lp->sa_cmd), sizeof(struct sa_cmd));
695 i596_add_cmd(dev, &lp->sa_cmd.cmd);
696
697 DEB(DEB_INIT, printk("%s: queuing CmdTDR\n", dev->name));
698 lp->tdr_cmd.cmd.command = CmdTDR;
699 CHECK_WBACK(lp, &(lp->tdr_cmd), sizeof(struct tdr_cmd));
700 i596_add_cmd(dev, &lp->tdr_cmd.cmd);
701
702 spin_lock_irqsave (&lp->lock, flags);
703
704 if (wait_cmd(dev, lp, 1000, "timed out waiting to issue RX_START")) {
705 spin_unlock_irqrestore (&lp->lock, flags);
706 goto failed;
707 }
708 DEB(DEB_INIT, printk("%s: Issuing RX_START\n", dev->name));
709 lp->scb.command = RX_START;
710 lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds));
711 CHECK_WBACK(lp, &(lp->scb), sizeof(struct i596_scb));
712
713 CA(dev);
714
715 spin_unlock_irqrestore (&lp->lock, flags);
716
717 if (wait_cmd(dev, lp, 1000, "RX_START not processed"))
718 goto failed;
719 DEB(DEB_INIT, printk("%s: Receive unit started OK\n", dev->name));
720
721 return 0;
722
723failed:
724 printk("%s: Failed to initialise 82596\n", dev->name);
725 MPU_PORT(dev, PORT_RESET, 0);
726 return -1;
727}
728
729
730static inline int i596_rx(struct net_device *dev)
731{
732 struct i596_private *lp = dev->priv;
733 struct i596_rfd *rfd;
734 struct i596_rbd *rbd;
735 int frames = 0;
736
737 DEB(DEB_RXFRAME, printk("i596_rx(), rfd_head %p, rbd_head %p\n",
738 lp->rfd_head, lp->rbd_head));
739
740
741 rfd = lp->rfd_head; /* Ref next frame to check */
742
743 CHECK_INV(lp, rfd, sizeof(struct i596_rfd));
744 while ((rfd->stat) & STAT_C) { /* Loop while complete frames */
745 if (rfd->rbd == I596_NULL)
746 rbd = NULL;
747 else if (rfd->rbd == lp->rbd_head->b_addr) {
748 rbd = lp->rbd_head;
749 CHECK_INV(lp, rbd, sizeof(struct i596_rbd));
750 }
751 else {
752 printk("%s: rbd chain broken!\n", dev->name);
753 /* XXX Now what? */
754 rbd = NULL;
755 }
756 DEB(DEB_RXFRAME, printk(" rfd %p, rfd.rbd %08x, rfd.stat %04x\n",
757 rfd, rfd->rbd, rfd->stat));
758
759 if (rbd != NULL && ((rfd->stat) & STAT_OK)) {
760 /* a good frame */
761 int pkt_len = rbd->count & 0x3fff;
762 struct sk_buff *skb = rbd->skb;
763 int rx_in_place = 0;
764
765 DEB(DEB_RXADDR,print_eth(rbd->v_data, "received"));
766 frames++;
767
768 /* Check if the packet is long enough to just accept
769 * without copying to a properly sized skbuff.
770 */
771
772 if (pkt_len > rx_copybreak) {
773 struct sk_buff *newskb;
774 dma_addr_t dma_addr;
775
776 dma_unmap_single(lp->dev,(dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE);
777 /* Get fresh skbuff to replace filled one. */
778 newskb = dev_alloc_skb(PKT_BUF_SZ + 4);
779 if (newskb == NULL) {
780 skb = NULL; /* drop pkt */
781 goto memory_squeeze;
782 }
783 skb_reserve(newskb, 2);
784
785 /* Pass up the skb already on the Rx ring. */
786 skb_put(skb, pkt_len);
787 rx_in_place = 1;
788 rbd->skb = newskb;
789 newskb->dev = dev;
790 dma_addr = dma_map_single(lp->dev, newskb->data, PKT_BUF_SZ, DMA_FROM_DEVICE);
791 rbd->v_data = newskb->data;
792 rbd->b_data = WSWAPchar(dma_addr);
793 CHECK_WBACK_INV(lp, rbd, sizeof(struct i596_rbd));
794 }
795 else
796 skb = dev_alloc_skb(pkt_len + 2);
797memory_squeeze:
798 if (skb == NULL) {
799 /* XXX tulip.c can defer packets here!! */
800 printk("%s: i596_rx Memory squeeze, dropping packet.\n", dev->name);
801 lp->stats.rx_dropped++;
802 }
803 else {
804 if (!rx_in_place) {
805 /* 16 byte align the data fields */
806 dma_sync_single_for_cpu(lp->dev, (dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE);
807 skb_reserve(skb, 2);
808 memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len);
809 dma_sync_single_for_device(lp->dev, (dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE);
810 }
811 skb->len = pkt_len;
812 skb->protocol=eth_type_trans(skb,dev);
813 netif_rx(skb);
814 dev->last_rx = jiffies;
815 lp->stats.rx_packets++;
816 lp->stats.rx_bytes+=pkt_len;
817 }
818 }
819 else {
820 DEB(DEB_ERRORS, printk("%s: Error, rfd.stat = 0x%04x\n",
821 dev->name, rfd->stat));
822 lp->stats.rx_errors++;
823 if ((rfd->stat) & 0x0001)
824 lp->stats.collisions++;
825 if ((rfd->stat) & 0x0080)
826 lp->stats.rx_length_errors++;
827 if ((rfd->stat) & 0x0100)
828 lp->stats.rx_over_errors++;
829 if ((rfd->stat) & 0x0200)
830 lp->stats.rx_fifo_errors++;
831 if ((rfd->stat) & 0x0400)
832 lp->stats.rx_frame_errors++;
833 if ((rfd->stat) & 0x0800)
834 lp->stats.rx_crc_errors++;
835 if ((rfd->stat) & 0x1000)
836 lp->stats.rx_length_errors++;
837 }
838
839 /* Clear the buffer descriptor count and EOF + F flags */
840
841 if (rbd != NULL && (rbd->count & 0x4000)) {
842 rbd->count = 0;
843 lp->rbd_head = rbd->v_next;
844 CHECK_WBACK_INV(lp, rbd, sizeof(struct i596_rbd));
845 }
846
847 /* Tidy the frame descriptor, marking it as end of list */
848
849 rfd->rbd = I596_NULL;
850 rfd->stat = 0;
851 rfd->cmd = CMD_EOL|CMD_FLEX;
852 rfd->count = 0;
853
854 /* Remove end-of-list from old end descriptor */
855
856 rfd->v_prev->cmd = CMD_FLEX;
857
858 /* Update record of next frame descriptor to process */
859
860 lp->scb.rfd = rfd->b_next;
861 lp->rfd_head = rfd->v_next;
862 CHECK_WBACK_INV(lp, rfd->v_prev, sizeof(struct i596_rfd));
863 CHECK_WBACK_INV(lp, rfd, sizeof(struct i596_rfd));
864 rfd = lp->rfd_head;
865 CHECK_INV(lp, rfd, sizeof(struct i596_rfd));
866 }
867
868 DEB(DEB_RXFRAME, printk("frames %d\n", frames));
869
870 return 0;
871}
872
873
874static inline void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp)
875{
876 struct i596_cmd *ptr;
877
878 while (lp->cmd_head != NULL) {
879 ptr = lp->cmd_head;
880 lp->cmd_head = ptr->v_next;
881 lp->cmd_backlog--;
882
883 switch ((ptr->command) & 0x7) {
884 case CmdTx:
885 {
886 struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
887 struct sk_buff *skb = tx_cmd->skb;
888 dma_unmap_single(lp->dev, tx_cmd->dma_addr, skb->len, DMA_TO_DEVICE);
889
890 dev_kfree_skb(skb);
891
892 lp->stats.tx_errors++;
893 lp->stats.tx_aborted_errors++;
894
895 ptr->v_next = NULL;
896 ptr->b_next = I596_NULL;
897 tx_cmd->cmd.command = 0; /* Mark as free */
898 break;
899 }
900 default:
901 ptr->v_next = NULL;
902 ptr->b_next = I596_NULL;
903 }
904 CHECK_WBACK_INV(lp, ptr, sizeof(struct i596_cmd));
905 }
906
907 wait_cmd(dev, lp, 100, "i596_cleanup_cmd timed out");
908 lp->scb.cmd = I596_NULL;
909 CHECK_WBACK(lp, &(lp->scb), sizeof(struct i596_scb));
910}
911
912
913static inline void i596_reset(struct net_device *dev, struct i596_private *lp)
914{
915 unsigned long flags;
916
917 DEB(DEB_RESET, printk("i596_reset\n"));
918
919 spin_lock_irqsave (&lp->lock, flags);
920
921 wait_cmd(dev, lp, 100, "i596_reset timed out");
922
923 netif_stop_queue(dev);
924
925 /* FIXME: this command might cause an lpmc */
926 lp->scb.command = CUC_ABORT | RX_ABORT;
927 CHECK_WBACK(lp, &(lp->scb), sizeof(struct i596_scb));
928 CA(dev);
929
930 /* wait for shutdown */
931 wait_cmd(dev, lp, 1000, "i596_reset 2 timed out");
932 spin_unlock_irqrestore (&lp->lock, flags);
933
934 i596_cleanup_cmd(dev,lp);
935 i596_rx(dev);
936
937 netif_start_queue(dev);
938 init_i596_mem(dev);
939}
940
941
942static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd)
943{
944 struct i596_private *lp = dev->priv;
945 unsigned long flags;
946
947 DEB(DEB_ADDCMD, printk("i596_add_cmd cmd_head %p\n", lp->cmd_head));
948
949 cmd->status = 0;
950 cmd->command |= (CMD_EOL | CMD_INTR);
951 cmd->v_next = NULL;
952 cmd->b_next = I596_NULL;
953 CHECK_WBACK(lp, cmd, sizeof(struct i596_cmd));
954
955 spin_lock_irqsave (&lp->lock, flags);
956
957 if (lp->cmd_head != NULL) {
958 lp->cmd_tail->v_next = cmd;
959 lp->cmd_tail->b_next = WSWAPcmd(virt_to_dma(lp,&cmd->status));
960 CHECK_WBACK(lp, lp->cmd_tail, sizeof(struct i596_cmd));
961 } else {
962 lp->cmd_head = cmd;
963 wait_cmd(dev, lp, 100, "i596_add_cmd timed out");
964 lp->scb.cmd = WSWAPcmd(virt_to_dma(lp,&cmd->status));
965 lp->scb.command = CUC_START;
966 CHECK_WBACK(lp, &(lp->scb), sizeof(struct i596_scb));
967 CA(dev);
968 }
969 lp->cmd_tail = cmd;
970 lp->cmd_backlog++;
971
972 spin_unlock_irqrestore (&lp->lock, flags);
973
974 if (lp->cmd_backlog > max_cmd_backlog) {
975 unsigned long tickssofar = jiffies - lp->last_cmd;
976
977 if (tickssofar < ticks_limit)
978 return;
979
980 printk("%s: command unit timed out, status resetting.\n", dev->name);
981#if 1
982 i596_reset(dev, lp);
983#endif
984 }
985}
986
987#if 0
988/* this function makes a perfectly adequate probe... but we have a
989 device list */
990static int i596_test(struct net_device *dev)
991{
992 struct i596_private *lp = dev->priv;
993 volatile int *tint;
994 u32 data;
995
996 tint = (volatile int *)(&(lp->scp));
997 data = virt_to_dma(lp,tint);
998
999 tint[1] = -1;
1000 CHECK_WBACK(lp, tint, PAGE_SIZE);
1001
1002 MPU_PORT(dev, 1, data);
1003
1004 for(data = 1000000; data; data--) {
1005 CHECK_INV(lp, tint, PAGE_SIZE);
1006 if(tint[1] != -1)
1007 break;
1008
1009 }
1010
1011 printk("i596_test result %d\n", tint[1]);
1012
1013}
1014#endif
1015
1016
1017static int i596_open(struct net_device *dev)
1018{
1019 DEB(DEB_OPEN, printk("%s: i596_open() irq %d.\n", dev->name, dev->irq));
1020
1021 if (request_irq(dev->irq, &i596_interrupt, 0, "i82596", dev)) {
1022 printk("%s: IRQ %d not free\n", dev->name, dev->irq);
1023 goto out;
1024 }
1025
1026 init_rx_bufs(dev);
1027
1028 if (init_i596_mem(dev)) {
1029 printk("%s: Failed to init memory\n", dev->name);
1030 goto out_remove_rx_bufs;
1031 }
1032
1033 netif_start_queue(dev);
1034
1035 return 0;
1036
1037out_remove_rx_bufs:
1038 remove_rx_bufs(dev);
1039 free_irq(dev->irq, dev);
1040out:
1041 return -EAGAIN;
1042}
1043
1044static void i596_tx_timeout (struct net_device *dev)
1045{
1046 struct i596_private *lp = dev->priv;
1047
1048 /* Transmitter timeout, serious problems. */
1049 DEB(DEB_ERRORS, printk("%s: transmit timed out, status resetting.\n",
1050 dev->name));
1051
1052 lp->stats.tx_errors++;
1053
1054 /* Try to restart the adaptor */
1055 if (lp->last_restart == lp->stats.tx_packets) {
1056 DEB(DEB_ERRORS, printk("Resetting board.\n"));
1057 /* Shutdown and restart */
1058 i596_reset (dev, lp);
1059 } else {
1060 /* Issue a channel attention signal */
1061 DEB(DEB_ERRORS, printk("Kicking board.\n"));
1062 lp->scb.command = CUC_START | RX_START;
1063 CHECK_WBACK_INV(lp, &(lp->scb), sizeof(struct i596_scb));
1064 CA (dev);
1065 lp->last_restart = lp->stats.tx_packets;
1066 }
1067
1068 dev->trans_start = jiffies;
1069 netif_wake_queue (dev);
1070}
1071
1072
1073static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev)
1074{
1075 struct i596_private *lp = dev->priv;
1076 struct tx_cmd *tx_cmd;
1077 struct i596_tbd *tbd;
1078 short length = skb->len;
1079 dev->trans_start = jiffies;
1080
1081 DEB(DEB_STARTTX, printk("%s: i596_start_xmit(%x,%p) called\n", dev->name,
1082 skb->len, skb->data));
1083
1084 if (length < ETH_ZLEN) {
1085 if (skb_padto(skb, ETH_ZLEN))
1086 return 0;
1087 length = ETH_ZLEN;
1088 }
1089
1090 netif_stop_queue(dev);
1091
1092 tx_cmd = lp->tx_cmds + lp->next_tx_cmd;
1093 tbd = lp->tbds + lp->next_tx_cmd;
1094
1095 if (tx_cmd->cmd.command) {
1096 DEB(DEB_ERRORS, printk("%s: xmit ring full, dropping packet.\n",
1097 dev->name));
1098 lp->stats.tx_dropped++;
1099
1100 dev_kfree_skb(skb);
1101 } else {
1102 if (++lp->next_tx_cmd == TX_RING_SIZE)
1103 lp->next_tx_cmd = 0;
1104 tx_cmd->tbd = WSWAPtbd(virt_to_dma(lp,tbd));
1105 tbd->next = I596_NULL;
1106
1107 tx_cmd->cmd.command = CMD_FLEX | CmdTx;
1108 tx_cmd->skb = skb;
1109
1110 tx_cmd->pad = 0;
1111 tx_cmd->size = 0;
1112 tbd->pad = 0;
1113 tbd->size = EOF | length;
1114
1115 tx_cmd->dma_addr = dma_map_single(lp->dev, skb->data, skb->len,
1116 DMA_TO_DEVICE);
1117 tbd->data = WSWAPchar(tx_cmd->dma_addr);
1118
1119 DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued"));
1120 CHECK_WBACK_INV(lp, tx_cmd, sizeof(struct tx_cmd));
1121 CHECK_WBACK_INV(lp, tbd, sizeof(struct i596_tbd));
1122 i596_add_cmd(dev, &tx_cmd->cmd);
1123
1124 lp->stats.tx_packets++;
1125 lp->stats.tx_bytes += length;
1126 }
1127
1128 netif_start_queue(dev);
1129
1130 return 0;
1131}
1132
1133static void print_eth(unsigned char *add, char *str)
1134{
1135 int i;
1136
1137 printk("i596 0x%p, ", add);
1138 for (i = 0; i < 6; i++)
1139 printk(" %02X", add[i + 6]);
1140 printk(" -->");
1141 for (i = 0; i < 6; i++)
1142 printk(" %02X", add[i]);
1143 printk(" %02X%02X, %s\n", add[12], add[13], str);
1144}
1145
1146
1147#define LAN_PROM_ADDR 0xF0810000 152#define LAN_PROM_ADDR 0xF0810000
1148 153
1149static int __devinit i82596_probe(struct net_device *dev,
1150 struct device *gen_dev)
1151{
1152 int i;
1153 struct i596_private *lp;
1154 char eth_addr[6];
1155 dma_addr_t dma_addr;
1156
1157 /* This lot is ensure things have been cache line aligned. */
1158 BUILD_BUG_ON(sizeof(struct i596_rfd) != 32);
1159 BUILD_BUG_ON(sizeof(struct i596_rbd) & 31);
1160 BUILD_BUG_ON(sizeof(struct tx_cmd) & 31);
1161 BUILD_BUG_ON(sizeof(struct i596_tbd) != 32);
1162#ifndef __LP64__
1163 BUILD_BUG_ON(sizeof(struct i596_private) > 4096);
1164#endif
1165
1166 if (!dev->base_addr || !dev->irq)
1167 return -ENODEV;
1168
1169 if (pdc_lan_station_id(eth_addr, dev->base_addr)) {
1170 for (i=0; i < 6; i++) {
1171 eth_addr[i] = gsc_readb(LAN_PROM_ADDR + i);
1172 }
1173 printk(KERN_INFO "%s: MAC of HP700 LAN read from EEPROM\n", __FILE__);
1174 }
1175
1176 dev->mem_start = (unsigned long) dma_alloc_noncoherent(gen_dev,
1177 sizeof(struct i596_private), &dma_addr, GFP_KERNEL);
1178 if (!dev->mem_start) {
1179 printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__);
1180 return -ENOMEM;
1181 }
1182
1183 for (i = 0; i < 6; i++)
1184 dev->dev_addr[i] = eth_addr[i];
1185
1186 /* The 82596-specific entries in the device structure. */
1187 dev->open = i596_open;
1188 dev->stop = i596_close;
1189 dev->hard_start_xmit = i596_start_xmit;
1190 dev->get_stats = i596_get_stats;
1191 dev->set_multicast_list = set_multicast_list;
1192 dev->tx_timeout = i596_tx_timeout;
1193 dev->watchdog_timeo = TX_TIMEOUT;
1194#ifdef CONFIG_NET_POLL_CONTROLLER
1195 dev->poll_controller = i596_poll_controller;
1196#endif
1197
1198 dev->priv = (void *)(dev->mem_start);
1199
1200 lp = dev->priv;
1201 memset(lp, 0, sizeof(struct i596_private));
1202
1203 lp->scb.command = 0;
1204 lp->scb.cmd = I596_NULL;
1205 lp->scb.rfd = I596_NULL;
1206 spin_lock_init(&lp->lock);
1207 lp->dma_addr = dma_addr;
1208 lp->dev = gen_dev;
1209
1210 CHECK_WBACK_INV(lp, dev->mem_start, sizeof(struct i596_private));
1211
1212 i = register_netdev(dev);
1213 if (i) {
1214 lp = dev->priv;
1215 dma_free_noncoherent(lp->dev, sizeof(struct i596_private),
1216 (void *)dev->mem_start, lp->dma_addr);
1217 return i;
1218 };
1219
1220 DEB(DEB_PROBE, printk(KERN_INFO "%s: 82596 at %#3lx,", dev->name, dev->base_addr));
1221 for (i = 0; i < 6; i++)
1222 DEB(DEB_PROBE, printk(" %2.2X", dev->dev_addr[i]));
1223 DEB(DEB_PROBE, printk(" IRQ %d.\n", dev->irq));
1224 DEB(DEB_INIT, printk(KERN_INFO "%s: lp at 0x%p (%d bytes), lp->scb at 0x%p\n",
1225 dev->name, lp, (int)sizeof(struct i596_private), &lp->scb));
1226
1227 return 0;
1228}
1229
1230#ifdef CONFIG_NET_POLL_CONTROLLER
1231static void i596_poll_controller(struct net_device *dev)
1232{
1233 disable_irq(dev->irq);
1234 i596_interrupt(dev->irq, dev);
1235 enable_irq(dev->irq);
1236}
1237#endif
1238
1239static irqreturn_t i596_interrupt(int irq, void *dev_id)
1240{
1241 struct net_device *dev = dev_id;
1242 struct i596_private *lp;
1243 unsigned short status, ack_cmd = 0;
1244
1245 if (dev == NULL) {
1246 printk("%s: irq %d for unknown device.\n", __FUNCTION__, irq);
1247 return IRQ_NONE;
1248 }
1249
1250 lp = dev->priv;
1251
1252 spin_lock (&lp->lock);
1253
1254 wait_cmd(dev, lp, 100, "i596 interrupt, timeout");
1255 status = lp->scb.status;
1256
1257 DEB(DEB_INTS, printk("%s: i596 interrupt, IRQ %d, status %4.4x.\n",
1258 dev->name, irq, status));
1259
1260 ack_cmd = status & 0xf000;
1261
1262 if (!ack_cmd) {
1263 DEB(DEB_ERRORS, printk("%s: interrupt with no events\n", dev->name));
1264 spin_unlock (&lp->lock);
1265 return IRQ_NONE;
1266 }
1267
1268 if ((status & 0x8000) || (status & 0x2000)) {
1269 struct i596_cmd *ptr;
1270
1271 if ((status & 0x8000))
1272 DEB(DEB_INTS, printk("%s: i596 interrupt completed command.\n", dev->name));
1273 if ((status & 0x2000))
1274 DEB(DEB_INTS, printk("%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700));
1275
1276 while (lp->cmd_head != NULL) {
1277 CHECK_INV(lp, lp->cmd_head, sizeof(struct i596_cmd));
1278 if (!(lp->cmd_head->status & STAT_C))
1279 break;
1280
1281 ptr = lp->cmd_head;
1282
1283 DEB(DEB_STATUS, printk("cmd_head->status = %04x, ->command = %04x\n",
1284 lp->cmd_head->status, lp->cmd_head->command));
1285 lp->cmd_head = ptr->v_next;
1286 lp->cmd_backlog--;
1287
1288 switch ((ptr->command) & 0x7) {
1289 case CmdTx:
1290 {
1291 struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
1292 struct sk_buff *skb = tx_cmd->skb;
1293
1294 if ((ptr->status) & STAT_OK) {
1295 DEB(DEB_TXADDR, print_eth(skb->data, "tx-done"));
1296 } else {
1297 lp->stats.tx_errors++;
1298 if ((ptr->status) & 0x0020)
1299 lp->stats.collisions++;
1300 if (!((ptr->status) & 0x0040))
1301 lp->stats.tx_heartbeat_errors++;
1302 if ((ptr->status) & 0x0400)
1303 lp->stats.tx_carrier_errors++;
1304 if ((ptr->status) & 0x0800)
1305 lp->stats.collisions++;
1306 if ((ptr->status) & 0x1000)
1307 lp->stats.tx_aborted_errors++;
1308 }
1309 dma_unmap_single(lp->dev, tx_cmd->dma_addr, skb->len, DMA_TO_DEVICE);
1310 dev_kfree_skb_irq(skb);
1311
1312 tx_cmd->cmd.command = 0; /* Mark free */
1313 break;
1314 }
1315 case CmdTDR:
1316 {
1317 unsigned short status = ((struct tdr_cmd *)ptr)->status;
1318
1319 if (status & 0x8000) {
1320 DEB(DEB_ANY, printk("%s: link ok.\n", dev->name));
1321 } else {
1322 if (status & 0x4000)
1323 printk("%s: Transceiver problem.\n", dev->name);
1324 if (status & 0x2000)
1325 printk("%s: Termination problem.\n", dev->name);
1326 if (status & 0x1000)
1327 printk("%s: Short circuit.\n", dev->name);
1328
1329 DEB(DEB_TDR, printk("%s: Time %d.\n", dev->name, status & 0x07ff));
1330 }
1331 break;
1332 }
1333 case CmdConfigure:
1334 /* Zap command so set_multicast_list() knows it is free */
1335 ptr->command = 0;
1336 break;
1337 }
1338 ptr->v_next = NULL;
1339 ptr->b_next = I596_NULL;
1340 CHECK_WBACK(lp, ptr, sizeof(struct i596_cmd));
1341 lp->last_cmd = jiffies;
1342 }
1343
1344 /* This mess is arranging that only the last of any outstanding
1345 * commands has the interrupt bit set. Should probably really
1346 * only add to the cmd queue when the CU is stopped.
1347 */
1348 ptr = lp->cmd_head;
1349 while ((ptr != NULL) && (ptr != lp->cmd_tail)) {
1350 struct i596_cmd *prev = ptr;
1351
1352 ptr->command &= 0x1fff;
1353 ptr = ptr->v_next;
1354 CHECK_WBACK_INV(lp, prev, sizeof(struct i596_cmd));
1355 }
1356
1357 if ((lp->cmd_head != NULL))
1358 ack_cmd |= CUC_START;
1359 lp->scb.cmd = WSWAPcmd(virt_to_dma(lp,&lp->cmd_head->status));
1360 CHECK_WBACK_INV(lp, &lp->scb, sizeof(struct i596_scb));
1361 }
1362 if ((status & 0x1000) || (status & 0x4000)) {
1363 if ((status & 0x4000))
1364 DEB(DEB_INTS, printk("%s: i596 interrupt received a frame.\n", dev->name));
1365 i596_rx(dev);
1366 /* Only RX_START if stopped - RGH 07-07-96 */
1367 if (status & 0x1000) {
1368 if (netif_running(dev)) {
1369 DEB(DEB_ERRORS, printk("%s: i596 interrupt receive unit inactive, status 0x%x\n", dev->name, status));
1370 ack_cmd |= RX_START;
1371 lp->stats.rx_errors++;
1372 lp->stats.rx_fifo_errors++;
1373 rebuild_rx_bufs(dev);
1374 }
1375 }
1376 }
1377 wait_cmd(dev, lp, 100, "i596 interrupt, timeout");
1378 lp->scb.command = ack_cmd;
1379 CHECK_WBACK(lp, &lp->scb, sizeof(struct i596_scb));
1380
1381 /* DANGER: I suspect that some kind of interrupt
1382 acknowledgement aside from acking the 82596 might be needed
1383 here... but it's running acceptably without */
1384
1385 CA(dev);
1386
1387 wait_cmd(dev, lp, 100, "i596 interrupt, exit timeout");
1388 DEB(DEB_INTS, printk("%s: exiting interrupt.\n", dev->name));
1389
1390 spin_unlock (&lp->lock);
1391 return IRQ_HANDLED;
1392}
1393
1394static int i596_close(struct net_device *dev)
1395{
1396 struct i596_private *lp = dev->priv;
1397 unsigned long flags;
1398
1399 netif_stop_queue(dev);
1400
1401 DEB(DEB_INIT, printk("%s: Shutting down ethercard, status was %4.4x.\n",
1402 dev->name, lp->scb.status));
1403
1404 spin_lock_irqsave(&lp->lock, flags);
1405
1406 wait_cmd(dev, lp, 100, "close1 timed out");
1407 lp->scb.command = CUC_ABORT | RX_ABORT;
1408 CHECK_WBACK(lp, &lp->scb, sizeof(struct i596_scb));
1409
1410 CA(dev);
1411
1412 wait_cmd(dev, lp, 100, "close2 timed out");
1413 spin_unlock_irqrestore(&lp->lock, flags);
1414 DEB(DEB_STRUCT,i596_display_data(dev));
1415 i596_cleanup_cmd(dev,lp);
1416
1417 disable_irq(dev->irq);
1418
1419 free_irq(dev->irq, dev);
1420 remove_rx_bufs(dev);
1421
1422 return 0;
1423}
1424
1425static struct net_device_stats *
1426 i596_get_stats(struct net_device *dev)
1427{
1428 struct i596_private *lp = dev->priv;
1429
1430 return &lp->stats;
1431}
1432
1433/*
1434 * Set or clear the multicast filter for this adaptor.
1435 */
1436
1437static void set_multicast_list(struct net_device *dev)
1438{
1439 struct i596_private *lp = dev->priv;
1440 int config = 0, cnt;
1441
1442 DEB(DEB_MULTI, printk("%s: set multicast list, %d entries, promisc %s, allmulti %s\n",
1443 dev->name, dev->mc_count, dev->flags & IFF_PROMISC ? "ON" : "OFF",
1444 dev->flags & IFF_ALLMULTI ? "ON" : "OFF"));
1445
1446 if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8] & 0x01)) {
1447 lp->cf_cmd.i596_config[8] |= 0x01;
1448 config = 1;
1449 }
1450 if (!(dev->flags & IFF_PROMISC) && (lp->cf_cmd.i596_config[8] & 0x01)) {
1451 lp->cf_cmd.i596_config[8] &= ~0x01;
1452 config = 1;
1453 }
1454 if ((dev->flags & IFF_ALLMULTI) && (lp->cf_cmd.i596_config[11] & 0x20)) {
1455 lp->cf_cmd.i596_config[11] &= ~0x20;
1456 config = 1;
1457 }
1458 if (!(dev->flags & IFF_ALLMULTI) && !(lp->cf_cmd.i596_config[11] & 0x20)) {
1459 lp->cf_cmd.i596_config[11] |= 0x20;
1460 config = 1;
1461 }
1462 if (config) {
1463 if (lp->cf_cmd.cmd.command)
1464 printk("%s: config change request already queued\n",
1465 dev->name);
1466 else {
1467 lp->cf_cmd.cmd.command = CmdConfigure;
1468 CHECK_WBACK_INV(lp, &lp->cf_cmd, sizeof(struct cf_cmd));
1469 i596_add_cmd(dev, &lp->cf_cmd.cmd);
1470 }
1471 }
1472
1473 cnt = dev->mc_count;
1474 if (cnt > MAX_MC_CNT)
1475 {
1476 cnt = MAX_MC_CNT;
1477 printk("%s: Only %d multicast addresses supported",
1478 dev->name, cnt);
1479 }
1480
1481 if (dev->mc_count > 0) {
1482 struct dev_mc_list *dmi;
1483 unsigned char *cp;
1484 struct mc_cmd *cmd;
1485
1486 cmd = &lp->mc_cmd;
1487 cmd->cmd.command = CmdMulticastList;
1488 cmd->mc_cnt = dev->mc_count * 6;
1489 cp = cmd->mc_addrs;
1490 for (dmi = dev->mc_list; cnt && dmi != NULL; dmi = dmi->next, cnt--, cp += 6) {
1491 memcpy(cp, dmi->dmi_addr, 6);
1492 if (i596_debug > 1)
1493 DEB(DEB_MULTI, printk("%s: Adding address %02x:%02x:%02x:%02x:%02x:%02x\n",
1494 dev->name, cp[0],cp[1],cp[2],cp[3],cp[4],cp[5]));
1495 }
1496 CHECK_WBACK_INV(lp, &lp->mc_cmd, sizeof(struct mc_cmd));
1497 i596_add_cmd(dev, &cmd->cmd);
1498 }
1499}
1500
1501static int debug = -1;
1502module_param(debug, int, 0);
1503MODULE_PARM_DESC(debug, "lasi_82596 debug mask");
1504
1505static int num_drivers;
1506static struct net_device *netdevs[MAX_DRIVERS];
1507
1508static int __devinit 154static int __devinit
1509lan_init_chip(struct parisc_device *dev) 155lan_init_chip(struct parisc_device *dev)
1510{ 156{
1511 struct net_device *netdevice; 157 struct net_device *netdevice;
158 struct i596_private *lp;
1512 int retval; 159 int retval;
1513 160 int i;
1514 if (num_drivers >= MAX_DRIVERS) {
1515 /* max count of possible i82596 drivers reached */
1516 return -ENOMEM;
1517 }
1518
1519 if (num_drivers == 0)
1520 printk(KERN_INFO LASI_82596_DRIVER_VERSION "\n");
1521 161
1522 if (!dev->irq) { 162 if (!dev->irq) {
1523 printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n", 163 printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n",
@@ -1528,28 +168,45 @@ lan_init_chip(struct parisc_device *dev)
1528 printk(KERN_INFO "Found i82596 at 0x%lx, IRQ %d\n", dev->hpa.start, 168 printk(KERN_INFO "Found i82596 at 0x%lx, IRQ %d\n", dev->hpa.start,
1529 dev->irq); 169 dev->irq);
1530 170
1531 netdevice = alloc_etherdev(0); 171 netdevice = alloc_etherdev(sizeof(struct i596_private));
1532 if (!netdevice) 172 if (!netdevice)
1533 return -ENOMEM; 173 return -ENOMEM;
174 SET_NETDEV_DEV(netdevice, &dev->dev);
175 parisc_set_drvdata (dev, netdevice);
1534 176
1535 netdevice->base_addr = dev->hpa.start; 177 netdevice->base_addr = dev->hpa.start;
1536 netdevice->irq = dev->irq; 178 netdevice->irq = dev->irq;
1537 179
1538 retval = i82596_probe(netdevice, &dev->dev); 180 if (pdc_lan_station_id(netdevice->dev_addr, netdevice->base_addr)) {
181 for (i = 0; i < 6; i++) {
182 netdevice->dev_addr[i] = gsc_readb(LAN_PROM_ADDR + i);
183 }
184 printk(KERN_INFO
185 "%s: MAC of HP700 LAN read from EEPROM\n", __FILE__);
186 }
187
188 lp = netdev_priv(netdevice);
189 lp->options = dev->id.sversion == 0x72 ? OPT_SWAP_PORT : 0;
190
191 retval = i82596_probe(netdevice);
1539 if (retval) { 192 if (retval) {
1540 free_netdev(netdevice); 193 free_netdev(netdevice);
1541 return -ENODEV; 194 return -ENODEV;
1542 } 195 }
1543
1544 if (dev->id.sversion == 0x72) {
1545 ((struct i596_private *)netdevice->priv)->options = OPT_SWAP_PORT;
1546 }
1547
1548 netdevs[num_drivers++] = netdevice;
1549
1550 return retval; 196 return retval;
1551} 197}
1552 198
199static int __devexit lan_remove_chip (struct parisc_device *pdev)
200{
201 struct net_device *dev = parisc_get_drvdata(pdev);
202 struct i596_private *lp = netdev_priv(dev);
203
204 unregister_netdev (dev);
205 DMA_FREE(&pdev->dev, sizeof(struct i596_private),
206 (void *)lp->dma, lp->dma_addr);
207 free_netdev (dev);
208 return 0;
209}
1553 210
1554static struct parisc_device_id lan_tbl[] = { 211static struct parisc_device_id lan_tbl[] = {
1555 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008a }, 212 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008a },
@@ -1563,12 +220,12 @@ static struct parisc_driver lan_driver = {
1563 .name = "lasi_82596", 220 .name = "lasi_82596",
1564 .id_table = lan_tbl, 221 .id_table = lan_tbl,
1565 .probe = lan_init_chip, 222 .probe = lan_init_chip,
223 .remove = __devexit_p(lan_remove_chip),
1566}; 224};
1567 225
1568static int __devinit lasi_82596_init(void) 226static int __devinit lasi_82596_init(void)
1569{ 227{
1570 if (debug >= 0) 228 printk(KERN_INFO LASI_82596_DRIVER_VERSION "\n");
1571 i596_debug = debug;
1572 return register_parisc_driver(&lan_driver); 229 return register_parisc_driver(&lan_driver);
1573} 230}
1574 231
@@ -1576,25 +233,6 @@ module_init(lasi_82596_init);
1576 233
1577static void __exit lasi_82596_exit(void) 234static void __exit lasi_82596_exit(void)
1578{ 235{
1579 int i;
1580
1581 for (i=0; i<MAX_DRIVERS; i++) {
1582 struct i596_private *lp;
1583 struct net_device *netdevice;
1584
1585 netdevice = netdevs[i];
1586 if (!netdevice)
1587 continue;
1588
1589 unregister_netdev(netdevice);
1590
1591 lp = netdevice->priv;
1592 dma_free_noncoherent(lp->dev, sizeof(struct i596_private),
1593 (void *)netdevice->mem_start, lp->dma_addr);
1594 free_netdev(netdevice);
1595 }
1596 num_drivers = 0;
1597
1598 unregister_parisc_driver(&lan_driver); 236 unregister_parisc_driver(&lan_driver);
1599} 237}
1600 238
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-24 21:43:01 -0400