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[ARM] Support register switch in nommu mode
[linux-2.6/verdex.git] / drivers / net / pcnet32.c
blob8f6cf8c896a484bdd837a5ec9c894863297b2d2d
1 /* pcnet32.c: An AMD PCnet32 ethernet driver for linux. */
2 /*
3 * Copyright 1996-1999 Thomas Bogendoerfer
4 *
5 * Derived from the lance driver written 1993,1994,1995 by Donald Becker.
6 *
7 * Copyright 1993 United States Government as represented by the
8 * Director, National Security Agency.
9 *
10 * This software may be used and distributed according to the terms
11 * of the GNU General Public License, incorporated herein by reference.
12 *
13 * This driver is for PCnet32 and PCnetPCI based ethercards
14 */
15 /**************************************************************************
16 * 23 Oct, 2000.
17 * Fixed a few bugs, related to running the controller in 32bit mode.
18 *
19 * Carsten Langgaard, carstenl@mips.com
20 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
21 *
22 *************************************************************************/
23
24 #define DRV_NAME "pcnet32"
25 #define DRV_VERSION "1.31c"
26 #define DRV_RELDATE "01.Nov.2005"
27 #define PFX DRV_NAME ": "
28
29 static const char *version =
30 DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n";
31
32 #include <linux/module.h>
33 #include <linux/kernel.h>
34 #include <linux/string.h>
35 #include <linux/errno.h>
36 #include <linux/ioport.h>
37 #include <linux/slab.h>
38 #include <linux/interrupt.h>
39 #include <linux/pci.h>
40 #include <linux/delay.h>
41 #include <linux/init.h>
42 #include <linux/ethtool.h>
43 #include <linux/mii.h>
44 #include <linux/crc32.h>
45 #include <linux/netdevice.h>
46 #include <linux/etherdevice.h>
47 #include <linux/skbuff.h>
48 #include <linux/spinlock.h>
49 #include <linux/moduleparam.h>
50 #include <linux/bitops.h>
51
52 #include <asm/dma.h>
53 #include <asm/io.h>
54 #include <asm/uaccess.h>
55 #include <asm/irq.h>
56
57 /*
58 * PCI device identifiers for "new style" Linux PCI Device Drivers
59 */
60 static struct pci_device_id pcnet32_pci_tbl[] = {
61 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
62 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
63 /*
64 * Adapters that were sold with IBM's RS/6000 or pSeries hardware have
65 * the incorrect vendor id.
66 */
67 { PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_AMD_LANCE, PCI_ANY_ID, PCI_ANY_ID,
68 PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, 0 },
69 { 0, }
70 };
71
72 MODULE_DEVICE_TABLE (pci, pcnet32_pci_tbl);
73
74 static int cards_found;
75
76 /*
77 * VLB I/O addresses
78 */
79 static unsigned int pcnet32_portlist[] __initdata =
80 { 0x300, 0x320, 0x340, 0x360, 0 };
81
82
83
84 static int pcnet32_debug = 0;
85 static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */
86 static int pcnet32vlb; /* check for VLB cards ? */
87
88 static struct net_device *pcnet32_dev;
89
90 static int max_interrupt_work = 2;
91 static int rx_copybreak = 200;
92
93 #define PCNET32_PORT_AUI 0x00
94 #define PCNET32_PORT_10BT 0x01
95 #define PCNET32_PORT_GPSI 0x02
96 #define PCNET32_PORT_MII 0x03
97
98 #define PCNET32_PORT_PORTSEL 0x03
99 #define PCNET32_PORT_ASEL 0x04
100 #define PCNET32_PORT_100 0x40
101 #define PCNET32_PORT_FD 0x80
102
103 #define PCNET32_DMA_MASK 0xffffffff
104
105 #define PCNET32_WATCHDOG_TIMEOUT (jiffies + (2 * HZ))
106 #define PCNET32_BLINK_TIMEOUT (jiffies + (HZ/4))
107
108 /*
109 * table to translate option values from tulip
110 * to internal options
111 */
112 static unsigned char options_mapping[] = {
113 PCNET32_PORT_ASEL, /* 0 Auto-select */
114 PCNET32_PORT_AUI, /* 1 BNC/AUI */
115 PCNET32_PORT_AUI, /* 2 AUI/BNC */
116 PCNET32_PORT_ASEL, /* 3 not supported */
117 PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */
118 PCNET32_PORT_ASEL, /* 5 not supported */
119 PCNET32_PORT_ASEL, /* 6 not supported */
120 PCNET32_PORT_ASEL, /* 7 not supported */
121 PCNET32_PORT_ASEL, /* 8 not supported */
122 PCNET32_PORT_MII, /* 9 MII 10baseT */
123 PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */
124 PCNET32_PORT_MII, /* 11 MII (autosel) */
125 PCNET32_PORT_10BT, /* 12 10BaseT */
126 PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */
127 PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD, /* 14 MII 100BaseTx-FD */
128 PCNET32_PORT_ASEL /* 15 not supported */
129 };
130
131 static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = {
132 "Loopback test (offline)"
133 };
134 #define PCNET32_TEST_LEN (sizeof(pcnet32_gstrings_test) / ETH_GSTRING_LEN)
135
136 #define PCNET32_NUM_REGS 168
137
138 #define MAX_UNITS 8 /* More are supported, limit only on options */
139 static int options[MAX_UNITS];
140 static int full_duplex[MAX_UNITS];
141 static int homepna[MAX_UNITS];
142
143 /*
144 * Theory of Operation
145 *
146 * This driver uses the same software structure as the normal lance
147 * driver. So look for a verbose description in lance.c. The differences
148 * to the normal lance driver is the use of the 32bit mode of PCnet32
149 * and PCnetPCI chips. Because these chips are 32bit chips, there is no
150 * 16MB limitation and we don't need bounce buffers.
151 */
152
153 /*
154 * History:
155 * v0.01: Initial version
156 * only tested on Alpha Noname Board
157 * v0.02: changed IRQ handling for new interrupt scheme (dev_id)
158 * tested on a ASUS SP3G
159 * v0.10: fixed an odd problem with the 79C974 in a Compaq Deskpro XL
160 * looks like the 974 doesn't like stopping and restarting in a
161 * short period of time; now we do a reinit of the lance; the
162 * bug was triggered by doing ifconfig eth0 <ip> broadcast <addr>
163 * and hangs the machine (thanks to Klaus Liedl for debugging)
164 * v0.12: by suggestion from Donald Becker: Renamed driver to pcnet32,
165 * made it standalone (no need for lance.c)
166 * v0.13: added additional PCI detecting for special PCI devices (Compaq)
167 * v0.14: stripped down additional PCI probe (thanks to David C Niemi
168 * and sveneric@xs4all.nl for testing this on their Compaq boxes)
169 * v0.15: added 79C965 (VLB) probe
170 * added interrupt sharing for PCI chips
171 * v0.16: fixed set_multicast_list on Alpha machines
172 * v0.17: removed hack from dev.c; now pcnet32 uses ethif_probe in Space.c
173 * v0.19: changed setting of autoselect bit
174 * v0.20: removed additional Compaq PCI probe; there is now a working one
175 * in arch/i386/bios32.c
176 * v0.21: added endian conversion for ppc, from work by cort@cs.nmt.edu
177 * v0.22: added printing of status to ring dump
178 * v0.23: changed enet_statistics to net_devive_stats
179 * v0.90: added multicast filter
180 * added module support
181 * changed irq probe to new style
182 * added PCnetFast chip id
183 * added fix for receive stalls with Intel saturn chipsets
184 * added in-place rx skbs like in the tulip driver
185 * minor cleanups
186 * v0.91: added PCnetFast+ chip id
187 * back port to 2.0.x
188 * v1.00: added some stuff from Donald Becker's 2.0.34 version
189 * added support for byte counters in net_dev_stats
190 * v1.01: do ring dumps, only when debugging the driver
191 * increased the transmit timeout
192 * v1.02: fixed memory leak in pcnet32_init_ring()
193 * v1.10: workaround for stopped transmitter
194 * added port selection for modules
195 * detect special T1/E1 WAN card and setup port selection
196 * v1.11: fixed wrong checking of Tx errors
197 * v1.20: added check of return value kmalloc (cpeterso@cs.washington.edu)
198 * added save original kmalloc addr for freeing (mcr@solidum.com)
199 * added support for PCnetHome chip (joe@MIT.EDU)
200 * rewritten PCI card detection
201 * added dwio mode to get driver working on some PPC machines
202 * v1.21: added mii selection and mii ioctl
203 * v1.22: changed pci scanning code to make PPC people happy
204 * fixed switching to 32bit mode in pcnet32_open() (thanks
205 * to Michael Richard <mcr@solidum.com> for noticing this one)
206 * added sub vendor/device id matching (thanks again to
207 * Michael Richard <mcr@solidum.com>)
208 * added chip id for 79c973/975 (thanks to Zach Brown <zab@zabbo.net>)
209 * v1.23 fixed small bug, when manual selecting MII speed/duplex
210 * v1.24 Applied Thomas' patch to use TxStartPoint and thus decrease TxFIFO
211 * underflows. Added tx_start_pt module parameter. Increased
212 * TX_RING_SIZE from 16 to 32. Added #ifdef'd code to use DXSUFLO
213 * for FAST[+] chipsets. <kaf@fc.hp.com>
214 * v1.24ac Added SMP spinlocking - Alan Cox <alan@redhat.com>
215 * v1.25kf Added No Interrupt on successful Tx for some Tx's <kaf@fc.hp.com>
216 * v1.26 Converted to pci_alloc_consistent, Jamey Hicks / George France
217 * <jamey@crl.dec.com>
218 * - Fixed a few bugs, related to running the controller in 32bit mode.
219 * 23 Oct, 2000. Carsten Langgaard, carstenl@mips.com
220 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
221 * v1.26p Fix oops on rmmod+insmod; plug i/o resource leak - Paul Gortmaker
222 * v1.27 improved CSR/PROM address detection, lots of cleanups,
223 * new pcnet32vlb module option, HP-PARISC support,
224 * added module parameter descriptions,
225 * initial ethtool support - Helge Deller <deller@gmx.de>
226 * v1.27a Sun Feb 10 2002 Go Taniguchi <go@turbolinux.co.jp>
227 * use alloc_etherdev and register_netdev
228 * fix pci probe not increment cards_found
229 * FD auto negotiate error workaround for xSeries250
230 * clean up and using new mii module
231 * v1.27b Sep 30 2002 Kent Yoder <yoder1@us.ibm.com>
232 * Added timer for cable connection state changes.
233 * v1.28 20 Feb 2004 Don Fry <brazilnut@us.ibm.com>
234 * Jon Mason <jonmason@us.ibm.com>, Chinmay Albal <albal@in.ibm.com>
235 * Now uses ethtool_ops, netif_msg_* and generic_mii_ioctl.
236 * Fixes bogus 'Bus master arbitration failure', pci_[un]map_single
237 * length errors, and transmit hangs. Cleans up after errors in open.
238 * Jim Lewis <jklewis@us.ibm.com> added ethernet loopback test.
239 * Thomas Munck Steenholdt <tmus@tmus.dk> non-mii ioctl corrections.
240 * v1.29 6 Apr 2004 Jim Lewis <jklewis@us.ibm.com> added physical
241 * identification code (blink led's) and register dump.
242 * Don Fry added timer for 971/972 so skbufs don't remain on tx ring
243 * forever.
244 * v1.30 18 May 2004 Don Fry removed timer and Last Transmit Interrupt
245 * (ltint) as they added complexity and didn't give good throughput.
246 * v1.30a 22 May 2004 Don Fry limit frames received during interrupt.
247 * v1.30b 24 May 2004 Don Fry fix bogus tx carrier errors with 79c973,
248 * assisted by Bruce Penrod <bmpenrod@endruntechnologies.com>.
249 * v1.30c 25 May 2004 Don Fry added netif_wake_queue after pcnet32_restart.
250 * v1.30d 01 Jun 2004 Don Fry discard oversize rx packets.
251 * v1.30e 11 Jun 2004 Don Fry recover after fifo error and rx hang.
252 * v1.30f 16 Jun 2004 Don Fry cleanup IRQ to allow 0 and 1 for PCI,
253 * expanding on suggestions from Ralf Baechle <ralf@linux-mips.org>,
254 * and Brian Murphy <brian@murphy.dk>.
255 * v1.30g 22 Jun 2004 Patrick Simmons <psimmons@flash.net> added option
256 * homepna for selecting HomePNA mode for PCNet/Home 79C978.
257 * v1.30h 24 Jun 2004 Don Fry correctly select auto, speed, duplex in bcr32.
258 * v1.30i 28 Jun 2004 Don Fry change to use module_param.
259 * v1.30j 29 Apr 2005 Don Fry fix skb/map leak with loopback test.
260 * v1.31 02 Sep 2005 Hubert WS Lin <wslin@tw.ibm.c0m> added set_ringparam().
261 * v1.31a 12 Sep 2005 Hubert WS Lin <wslin@tw.ibm.c0m> set min ring size to 4
262 * to allow loopback test to work unchanged.
263 * v1.31b 06 Oct 2005 Don Fry changed alloc_ring to show name of device
264 * if allocation fails
265 * v1.31c 01 Nov 2005 Don Fry Allied Telesyn 2700/2701 FX are 100Mbit only.
266 * Force 100Mbit FD if Auto (ASEL) is selected.
267 * See Bugzilla 2669 and 4551.
268 */
269
270
271 /*
272 * Set the number of Tx and Rx buffers, using Log_2(# buffers).
273 * Reasonable default values are 4 Tx buffers, and 16 Rx buffers.
274 * That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
275 */
276 #ifndef PCNET32_LOG_TX_BUFFERS
277 #define PCNET32_LOG_TX_BUFFERS 4
278 #define PCNET32_LOG_RX_BUFFERS 5
279 #define PCNET32_LOG_MAX_TX_BUFFERS 9 /* 2^9 == 512 */
280 #define PCNET32_LOG_MAX_RX_BUFFERS 9
281 #endif
282
283 #define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS))
284 #define TX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_TX_BUFFERS))
285
286 #define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS))
287 #define RX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_RX_BUFFERS))
288
289 #define PKT_BUF_SZ 1544
290
291 /* Offsets from base I/O address. */
292 #define PCNET32_WIO_RDP 0x10
293 #define PCNET32_WIO_RAP 0x12
294 #define PCNET32_WIO_RESET 0x14
295 #define PCNET32_WIO_BDP 0x16
296
297 #define PCNET32_DWIO_RDP 0x10
298 #define PCNET32_DWIO_RAP 0x14
299 #define PCNET32_DWIO_RESET 0x18
300 #define PCNET32_DWIO_BDP 0x1C
301
302 #define PCNET32_TOTAL_SIZE 0x20
303
304 /* The PCNET32 Rx and Tx ring descriptors. */
305 struct pcnet32_rx_head {
306 u32 base;
307 s16 buf_length;
308 s16 status;
309 u32 msg_length;
310 u32 reserved;
311 };
312
313 struct pcnet32_tx_head {
314 u32 base;
315 s16 length;
316 s16 status;
317 u32 misc;
318 u32 reserved;
319 };
320
321 /* The PCNET32 32-Bit initialization block, described in databook. */
322 struct pcnet32_init_block {
323 u16 mode;
324 u16 tlen_rlen;
325 u8 phys_addr[6];
326 u16 reserved;
327 u32 filter[2];
328 /* Receive and transmit ring base, along with extra bits. */
329 u32 rx_ring;
330 u32 tx_ring;
331 };
332
333 /* PCnet32 access functions */
334 struct pcnet32_access {
335 u16 (*read_csr)(unsigned long, int);
336 void (*write_csr)(unsigned long, int, u16);
337 u16 (*read_bcr)(unsigned long, int);
338 void (*write_bcr)(unsigned long, int, u16);
339 u16 (*read_rap)(unsigned long);
340 void (*write_rap)(unsigned long, u16);
341 void (*reset)(unsigned long);
342 };
343
344 /*
345 * The first field of pcnet32_private is read by the ethernet device
346 * so the structure should be allocated using pci_alloc_consistent().
347 */
348 struct pcnet32_private {
349 struct pcnet32_init_block init_block;
350 /* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */
351 struct pcnet32_rx_head *rx_ring;
352 struct pcnet32_tx_head *tx_ring;
353 dma_addr_t dma_addr; /* DMA address of beginning of this
354 object, returned by
355 pci_alloc_consistent */
356 struct pci_dev *pci_dev; /* Pointer to the associated pci device
357 structure */
358 const char *name;
359 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
360 struct sk_buff **tx_skbuff;
361 struct sk_buff **rx_skbuff;
362 dma_addr_t *tx_dma_addr;
363 dma_addr_t *rx_dma_addr;
364 struct pcnet32_access a;
365 spinlock_t lock; /* Guard lock */
366 unsigned int cur_rx, cur_tx; /* The next free ring entry */
367 unsigned int rx_ring_size; /* current rx ring size */
368 unsigned int tx_ring_size; /* current tx ring size */
369 unsigned int rx_mod_mask; /* rx ring modular mask */
370 unsigned int tx_mod_mask; /* tx ring modular mask */
371 unsigned short rx_len_bits;
372 unsigned short tx_len_bits;
373 dma_addr_t rx_ring_dma_addr;
374 dma_addr_t tx_ring_dma_addr;
375 unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */
376 struct net_device_stats stats;
377 char tx_full;
378 int options;
379 unsigned int shared_irq:1, /* shared irq possible */
380 dxsuflo:1, /* disable transmit stop on uflo */
381 mii:1; /* mii port available */
382 struct net_device *next;
383 struct mii_if_info mii_if;
384 struct timer_list watchdog_timer;
385 struct timer_list blink_timer;
386 u32 msg_enable; /* debug message level */
387 };
388
389 static void pcnet32_probe_vlbus(void);
390 static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *);
391 static int pcnet32_probe1(unsigned long, int, struct pci_dev *);
392 static int pcnet32_open(struct net_device *);
393 static int pcnet32_init_ring(struct net_device *);
394 static int pcnet32_start_xmit(struct sk_buff *, struct net_device *);
395 static int pcnet32_rx(struct net_device *);
396 static void pcnet32_tx_timeout (struct net_device *dev);
397 static irqreturn_t pcnet32_interrupt(int, void *, struct pt_regs *);
398 static int pcnet32_close(struct net_device *);
399 static struct net_device_stats *pcnet32_get_stats(struct net_device *);
400 static void pcnet32_load_multicast(struct net_device *dev);
401 static void pcnet32_set_multicast_list(struct net_device *);
402 static int pcnet32_ioctl(struct net_device *, struct ifreq *, int);
403 static void pcnet32_watchdog(struct net_device *);
404 static int mdio_read(struct net_device *dev, int phy_id, int reg_num);
405 static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val);
406 static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits);
407 static void pcnet32_ethtool_test(struct net_device *dev,
408 struct ethtool_test *eth_test, u64 *data);
409 static int pcnet32_loopback_test(struct net_device *dev, uint64_t *data1);
410 static int pcnet32_phys_id(struct net_device *dev, u32 data);
411 static void pcnet32_led_blink_callback(struct net_device *dev);
412 static int pcnet32_get_regs_len(struct net_device *dev);
413 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
414 void *ptr);
415 static void pcnet32_purge_tx_ring(struct net_device *dev);
416 static int pcnet32_alloc_ring(struct net_device *dev, char *name);
417 static void pcnet32_free_ring(struct net_device *dev);
418
419
420 enum pci_flags_bit {
421 PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4,
422 PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3,
423 };
424
425
426 static u16 pcnet32_wio_read_csr (unsigned long addr, int index)
427 {
428 outw (index, addr+PCNET32_WIO_RAP);
429 return inw (addr+PCNET32_WIO_RDP);
430 }
431
432 static void pcnet32_wio_write_csr (unsigned long addr, int index, u16 val)
433 {
434 outw (index, addr+PCNET32_WIO_RAP);
435 outw (val, addr+PCNET32_WIO_RDP);
436 }
437
438 static u16 pcnet32_wio_read_bcr (unsigned long addr, int index)
439 {
440 outw (index, addr+PCNET32_WIO_RAP);
441 return inw (addr+PCNET32_WIO_BDP);
442 }
443
444 static void pcnet32_wio_write_bcr (unsigned long addr, int index, u16 val)
445 {
446 outw (index, addr+PCNET32_WIO_RAP);
447 outw (val, addr+PCNET32_WIO_BDP);
448 }
449
450 static u16 pcnet32_wio_read_rap (unsigned long addr)
451 {
452 return inw (addr+PCNET32_WIO_RAP);
453 }
454
455 static void pcnet32_wio_write_rap (unsigned long addr, u16 val)
456 {
457 outw (val, addr+PCNET32_WIO_RAP);
458 }
459
460 static void pcnet32_wio_reset (unsigned long addr)
461 {
462 inw (addr+PCNET32_WIO_RESET);
463 }
464
465 static int pcnet32_wio_check (unsigned long addr)
466 {
467 outw (88, addr+PCNET32_WIO_RAP);
468 return (inw (addr+PCNET32_WIO_RAP) == 88);
469 }
470
471 static struct pcnet32_access pcnet32_wio = {
472 .read_csr = pcnet32_wio_read_csr,
473 .write_csr = pcnet32_wio_write_csr,
474 .read_bcr = pcnet32_wio_read_bcr,
475 .write_bcr = pcnet32_wio_write_bcr,
476 .read_rap = pcnet32_wio_read_rap,
477 .write_rap = pcnet32_wio_write_rap,
478 .reset = pcnet32_wio_reset
479 };
480
481 static u16 pcnet32_dwio_read_csr (unsigned long addr, int index)
482 {
483 outl (index, addr+PCNET32_DWIO_RAP);
484 return (inl (addr+PCNET32_DWIO_RDP) & 0xffff);
485 }
486
487 static void pcnet32_dwio_write_csr (unsigned long addr, int index, u16 val)
488 {
489 outl (index, addr+PCNET32_DWIO_RAP);
490 outl (val, addr+PCNET32_DWIO_RDP);
491 }
492
493 static u16 pcnet32_dwio_read_bcr (unsigned long addr, int index)
494 {
495 outl (index, addr+PCNET32_DWIO_RAP);
496 return (inl (addr+PCNET32_DWIO_BDP) & 0xffff);
497 }
498
499 static void pcnet32_dwio_write_bcr (unsigned long addr, int index, u16 val)
500 {
501 outl (index, addr+PCNET32_DWIO_RAP);
502 outl (val, addr+PCNET32_DWIO_BDP);
503 }
504
505 static u16 pcnet32_dwio_read_rap (unsigned long addr)
506 {
507 return (inl (addr+PCNET32_DWIO_RAP) & 0xffff);
508 }
509
510 static void pcnet32_dwio_write_rap (unsigned long addr, u16 val)
511 {
512 outl (val, addr+PCNET32_DWIO_RAP);
513 }
514
515 static void pcnet32_dwio_reset (unsigned long addr)
516 {
517 inl (addr+PCNET32_DWIO_RESET);
518 }
519
520 static int pcnet32_dwio_check (unsigned long addr)
521 {
522 outl (88, addr+PCNET32_DWIO_RAP);
523 return ((inl (addr+PCNET32_DWIO_RAP) & 0xffff) == 88);
524 }
525
526 static struct pcnet32_access pcnet32_dwio = {
527 .read_csr = pcnet32_dwio_read_csr,
528 .write_csr = pcnet32_dwio_write_csr,
529 .read_bcr = pcnet32_dwio_read_bcr,
530 .write_bcr = pcnet32_dwio_write_bcr,
531 .read_rap = pcnet32_dwio_read_rap,
532 .write_rap = pcnet32_dwio_write_rap,
533 .reset = pcnet32_dwio_reset
534 };
535
536 #ifdef CONFIG_NET_POLL_CONTROLLER
537 static void pcnet32_poll_controller(struct net_device *dev)
538 {
539 disable_irq(dev->irq);
540 pcnet32_interrupt(0, dev, NULL);
541 enable_irq(dev->irq);
542 }
543 #endif
544
545
546 static int pcnet32_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
547 {
548 struct pcnet32_private *lp = dev->priv;
549 unsigned long flags;
550 int r = -EOPNOTSUPP;
551
552 if (lp->mii) {
553 spin_lock_irqsave(&lp->lock, flags);
554 mii_ethtool_gset(&lp->mii_if, cmd);
555 spin_unlock_irqrestore(&lp->lock, flags);
556 r = 0;
557 }
558 return r;
559 }
560
561 static int pcnet32_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
562 {
563 struct pcnet32_private *lp = dev->priv;
564 unsigned long flags;
565 int r = -EOPNOTSUPP;
566
567 if (lp->mii) {
568 spin_lock_irqsave(&lp->lock, flags);
569 r = mii_ethtool_sset(&lp->mii_if, cmd);
570 spin_unlock_irqrestore(&lp->lock, flags);
571 }
572 return r;
573 }
574
575 static void pcnet32_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
576 {
577 struct pcnet32_private *lp = dev->priv;
578
579 strcpy (info->driver, DRV_NAME);
580 strcpy (info->version, DRV_VERSION);
581 if (lp->pci_dev)
582 strcpy (info->bus_info, pci_name(lp->pci_dev));
583 else
584 sprintf(info->bus_info, "VLB 0x%lx", dev->base_addr);
585 }
586
587 static u32 pcnet32_get_link(struct net_device *dev)
588 {
589 struct pcnet32_private *lp = dev->priv;
590 unsigned long flags;
591 int r;
592
593 spin_lock_irqsave(&lp->lock, flags);
594 if (lp->mii) {
595 r = mii_link_ok(&lp->mii_if);
596 } else {
597 ulong ioaddr = dev->base_addr; /* card base I/O address */
598 r = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
599 }
600 spin_unlock_irqrestore(&lp->lock, flags);
601
602 return r;
603 }
604
605 static u32 pcnet32_get_msglevel(struct net_device *dev)
606 {
607 struct pcnet32_private *lp = dev->priv;
608 return lp->msg_enable;
609 }
610
611 static void pcnet32_set_msglevel(struct net_device *dev, u32 value)
612 {
613 struct pcnet32_private *lp = dev->priv;
614 lp->msg_enable = value;
615 }
616
617 static int pcnet32_nway_reset(struct net_device *dev)
618 {
619 struct pcnet32_private *lp = dev->priv;
620 unsigned long flags;
621 int r = -EOPNOTSUPP;
622
623 if (lp->mii) {
624 spin_lock_irqsave(&lp->lock, flags);
625 r = mii_nway_restart(&lp->mii_if);
626 spin_unlock_irqrestore(&lp->lock, flags);
627 }
628 return r;
629 }
630
631 static void pcnet32_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
632 {
633 struct pcnet32_private *lp = dev->priv;
634
635 ering->tx_max_pending = TX_MAX_RING_SIZE - 1;
636 ering->tx_pending = lp->tx_ring_size - 1;
637 ering->rx_max_pending = RX_MAX_RING_SIZE - 1;
638 ering->rx_pending = lp->rx_ring_size - 1;
639 }
640
641 static int pcnet32_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
642 {
643 struct pcnet32_private *lp = dev->priv;
644 unsigned long flags;
645 int i;
646
647 if (ering->rx_mini_pending || ering->rx_jumbo_pending)
648 return -EINVAL;
649
650 if (netif_running(dev))
651 pcnet32_close(dev);
652
653 spin_lock_irqsave(&lp->lock, flags);
654 pcnet32_free_ring(dev);
655 lp->tx_ring_size = min(ering->tx_pending, (unsigned int) TX_MAX_RING_SIZE);
656 lp->rx_ring_size = min(ering->rx_pending, (unsigned int) RX_MAX_RING_SIZE);
657
658 /* set the minimum ring size to 4, to allow the loopback test to work
659 * unchanged.
660 */
661 for (i = 2; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) {
662 if (lp->tx_ring_size <= (1 << i))
663 break;
664 }
665 lp->tx_ring_size = (1 << i);
666 lp->tx_mod_mask = lp->tx_ring_size - 1;
667 lp->tx_len_bits = (i << 12);
668
669 for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
670 if (lp->rx_ring_size <= (1 << i))
671 break;
672 }
673 lp->rx_ring_size = (1 << i);
674 lp->rx_mod_mask = lp->rx_ring_size - 1;
675 lp->rx_len_bits = (i << 4);
676
677 if (pcnet32_alloc_ring(dev, dev->name)) {
678 pcnet32_free_ring(dev);
679 spin_unlock_irqrestore(&lp->lock, flags);
680 return -ENOMEM;
681 }
682
683 spin_unlock_irqrestore(&lp->lock, flags);
684
685 if (pcnet32_debug & NETIF_MSG_DRV)
686 printk(KERN_INFO PFX "%s: Ring Param Settings: RX: %d, TX: %d\n",
687 dev->name, lp->rx_ring_size, lp->tx_ring_size);
688
689 if (netif_running(dev))
690 pcnet32_open(dev);
691
692 return 0;
693 }
694
695 static void pcnet32_get_strings(struct net_device *dev, u32 stringset, u8 *data)
696 {
697 memcpy(data, pcnet32_gstrings_test, sizeof(pcnet32_gstrings_test));
698 }
699
700 static int pcnet32_self_test_count(struct net_device *dev)
701 {
702 return PCNET32_TEST_LEN;
703 }
704
705 static void pcnet32_ethtool_test(struct net_device *dev,
706 struct ethtool_test *test, u64 *data)
707 {
708 struct pcnet32_private *lp = dev->priv;
709 int rc;
710
711 if (test->flags == ETH_TEST_FL_OFFLINE) {
712 rc = pcnet32_loopback_test(dev, data);
713 if (rc) {
714 if (netif_msg_hw(lp))
715 printk(KERN_DEBUG "%s: Loopback test failed.\n", dev->name);
716 test->flags |= ETH_TEST_FL_FAILED;
717 } else if (netif_msg_hw(lp))
718 printk(KERN_DEBUG "%s: Loopback test passed.\n", dev->name);
719 } else if (netif_msg_hw(lp))
720 printk(KERN_DEBUG "%s: No tests to run (specify 'Offline' on ethtool).", dev->name);
721 } /* end pcnet32_ethtool_test */
722
723 static int pcnet32_loopback_test(struct net_device *dev, uint64_t *data1)
724 {
725 struct pcnet32_private *lp = dev->priv;
726 struct pcnet32_access *a = &lp->a; /* access to registers */
727 ulong ioaddr = dev->base_addr; /* card base I/O address */
728 struct sk_buff *skb; /* sk buff */
729 int x, i; /* counters */
730 int numbuffs = 4; /* number of TX/RX buffers and descs */
731 u16 status = 0x8300; /* TX ring status */
732 u16 teststatus; /* test of ring status */
733 int rc; /* return code */
734 int size; /* size of packets */
735 unsigned char *packet; /* source packet data */
736 static int data_len = 60; /* length of source packets */
737 unsigned long flags;
738 unsigned long ticks;
739
740 *data1 = 1; /* status of test, default to fail */
741 rc = 1; /* default to fail */
742
743 if (netif_running(dev))
744 pcnet32_close(dev);
745
746 spin_lock_irqsave(&lp->lock, flags);
747
748 /* Reset the PCNET32 */
749 lp->a.reset (ioaddr);
750
751 /* switch pcnet32 to 32bit mode */
752 lp->a.write_bcr (ioaddr, 20, 2);
753
754 lp->init_block.mode = le16_to_cpu((lp->options & PCNET32_PORT_PORTSEL) << 7);
755 lp->init_block.filter[0] = 0;
756 lp->init_block.filter[1] = 0;
757
758 /* purge & init rings but don't actually restart */
759 pcnet32_restart(dev, 0x0000);
760
761 lp->a.write_csr(ioaddr, 0, 0x0004); /* Set STOP bit */
762
763 /* Initialize Transmit buffers. */
764 size = data_len + 15;
765 for (x=0; x<numbuffs; x++) {
766 if (!(skb = dev_alloc_skb(size))) {
767 if (netif_msg_hw(lp))
768 printk(KERN_DEBUG "%s: Cannot allocate skb at line: %d!\n",
769 dev->name, __LINE__);
770 goto clean_up;
771 } else {
772 packet = skb->data;
773 skb_put(skb, size); /* create space for data */
774 lp->tx_skbuff[x] = skb;
775 lp->tx_ring[x].length = le16_to_cpu(-skb->len);
776 lp->tx_ring[x].misc = 0;
777
778 /* put DA and SA into the skb */
779 for (i=0; i<6; i++)
780 *packet++ = dev->dev_addr[i];
781 for (i=0; i<6; i++)
782 *packet++ = dev->dev_addr[i];
783 /* type */
784 *packet++ = 0x08;
785 *packet++ = 0x06;
786 /* packet number */
787 *packet++ = x;
788 /* fill packet with data */
789 for (i=0; i<data_len; i++)
790 *packet++ = i;
791
792 lp->tx_dma_addr[x] = pci_map_single(lp->pci_dev, skb->data,
793 skb->len, PCI_DMA_TODEVICE);
794 lp->tx_ring[x].base = (u32)le32_to_cpu(lp->tx_dma_addr[x]);
795 wmb(); /* Make sure owner changes after all others are visible */
796 lp->tx_ring[x].status = le16_to_cpu(status);
797 }
798 }
799
800 x = a->read_bcr(ioaddr, 32); /* set internal loopback in BSR32 */
801 x = x | 0x0002;
802 a->write_bcr(ioaddr, 32, x);
803
804 lp->a.write_csr (ioaddr, 15, 0x0044); /* set int loopback in CSR15 */
805
806 teststatus = le16_to_cpu(0x8000);
807 lp->a.write_csr(ioaddr, 0, 0x0002); /* Set STRT bit */
808
809 /* Check status of descriptors */
810 for (x=0; x<numbuffs; x++) {
811 ticks = 0;
812 rmb();
813 while ((lp->rx_ring[x].status & teststatus) && (ticks < 200)) {
814 spin_unlock_irqrestore(&lp->lock, flags);
815 mdelay(1);
816 spin_lock_irqsave(&lp->lock, flags);
817 rmb();
818 ticks++;
819 }
820 if (ticks == 200) {
821 if (netif_msg_hw(lp))
822 printk("%s: Desc %d failed to reset!\n",dev->name,x);
823 break;
824 }
825 }
826
827 lp->a.write_csr(ioaddr, 0, 0x0004); /* Set STOP bit */
828 wmb();
829 if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) {
830 printk(KERN_DEBUG "%s: RX loopback packets:\n", dev->name);
831
832 for (x=0; x<numbuffs; x++) {
833 printk(KERN_DEBUG "%s: Packet %d:\n", dev->name, x);
834 skb = lp->rx_skbuff[x];
835 for (i=0; i<size; i++) {
836 printk("%02x ", *(skb->data+i));
837 }
838 printk("\n");
839 }
840 }
841
842 x = 0;
843 rc = 0;
844 while (x<numbuffs && !rc) {
845 skb = lp->rx_skbuff[x];
846 packet = lp->tx_skbuff[x]->data;
847 for (i=0; i<size; i++) {
848 if (*(skb->data+i) != packet[i]) {
849 if (netif_msg_hw(lp))
850 printk(KERN_DEBUG "%s: Error in compare! %2x - %02x %02x\n",
851 dev->name, i, *(skb->data+i), packet[i]);
852 rc = 1;
853 break;
854 }
855 }
856 x++;
857 }
858 if (!rc) {
859 *data1 = 0;
860 }
861
862 clean_up:
863 pcnet32_purge_tx_ring(dev);
864 x = a->read_csr(ioaddr, 15) & 0xFFFF;
865 a->write_csr(ioaddr, 15, (x & ~0x0044)); /* reset bits 6 and 2 */
866
867 x = a->read_bcr(ioaddr, 32); /* reset internal loopback */
868 x = x & ~0x0002;
869 a->write_bcr(ioaddr, 32, x);
870
871 spin_unlock_irqrestore(&lp->lock, flags);
872
873 if (netif_running(dev)) {
874 pcnet32_open(dev);
875 } else {
876 lp->a.write_bcr (ioaddr, 20, 4); /* return to 16bit mode */
877 }
878
879 return(rc);
880 } /* end pcnet32_loopback_test */
881
882 static void pcnet32_led_blink_callback(struct net_device *dev)
883 {
884 struct pcnet32_private *lp = dev->priv;
885 struct pcnet32_access *a = &lp->a;
886 ulong ioaddr = dev->base_addr;
887 unsigned long flags;
888 int i;
889
890 spin_lock_irqsave(&lp->lock, flags);
891 for (i=4; i<8; i++) {
892 a->write_bcr(ioaddr, i, a->read_bcr(ioaddr, i) ^ 0x4000);
893 }
894 spin_unlock_irqrestore(&lp->lock, flags);
895
896 mod_timer(&lp->blink_timer, PCNET32_BLINK_TIMEOUT);
897 }
898
899 static int pcnet32_phys_id(struct net_device *dev, u32 data)
900 {
901 struct pcnet32_private *lp = dev->priv;
902 struct pcnet32_access *a = &lp->a;
903 ulong ioaddr = dev->base_addr;
904 unsigned long flags;
905 int i, regs[4];
906
907 if (!lp->blink_timer.function) {
908 init_timer(&lp->blink_timer);
909 lp->blink_timer.function = (void *) pcnet32_led_blink_callback;
910 lp->blink_timer.data = (unsigned long) dev;
911 }
912
913 /* Save the current value of the bcrs */
914 spin_lock_irqsave(&lp->lock, flags);
915 for (i=4; i<8; i++) {
916 regs[i-4] = a->read_bcr(ioaddr, i);
917 }
918 spin_unlock_irqrestore(&lp->lock, flags);
919
920 mod_timer(&lp->blink_timer, jiffies);
921 set_current_state(TASK_INTERRUPTIBLE);
922
923 if ((!data) || (data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ)))
924 data = (u32)(MAX_SCHEDULE_TIMEOUT / HZ);
925
926 msleep_interruptible(data * 1000);
927 del_timer_sync(&lp->blink_timer);
928
929 /* Restore the original value of the bcrs */
930 spin_lock_irqsave(&lp->lock, flags);
931 for (i=4; i<8; i++) {
932 a->write_bcr(ioaddr, i, regs[i-4]);
933 }
934 spin_unlock_irqrestore(&lp->lock, flags);
935
936 return 0;
937 }
938
939 static int pcnet32_get_regs_len(struct net_device *dev)
940 {
941 return(PCNET32_NUM_REGS * sizeof(u16));
942 }
943
944 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
945 void *ptr)
946 {
947 int i, csr0;
948 u16 *buff = ptr;
949 struct pcnet32_private *lp = dev->priv;
950 struct pcnet32_access *a = &lp->a;
951 ulong ioaddr = dev->base_addr;
952 int ticks;
953 unsigned long flags;
954
955 spin_lock_irqsave(&lp->lock, flags);
956
957 csr0 = a->read_csr(ioaddr, 0);
958 if (!(csr0 & 0x0004)) { /* If not stopped */
959 /* set SUSPEND (SPND) - CSR5 bit 0 */
960 a->write_csr(ioaddr, 5, 0x0001);
961
962 /* poll waiting for bit to be set */
963 ticks = 0;
964 while (!(a->read_csr(ioaddr, 5) & 0x0001)) {
965 spin_unlock_irqrestore(&lp->lock, flags);
966 mdelay(1);
967 spin_lock_irqsave(&lp->lock, flags);
968 ticks++;
969 if (ticks > 200) {
970 if (netif_msg_hw(lp))
971 printk(KERN_DEBUG "%s: Error getting into suspend!\n",
972 dev->name);
973 break;
974 }
975 }
976 }
977
978 /* read address PROM */
979 for (i=0; i<16; i += 2)
980 *buff++ = inw(ioaddr + i);
981
982 /* read control and status registers */
983 for (i=0; i<90; i++) {
984 *buff++ = a->read_csr(ioaddr, i);
985 }
986
987 *buff++ = a->read_csr(ioaddr, 112);
988 *buff++ = a->read_csr(ioaddr, 114);
989
990 /* read bus configuration registers */
991 for (i=0; i<30; i++) {
992 *buff++ = a->read_bcr(ioaddr, i);
993 }
994 *buff++ = 0; /* skip bcr30 so as not to hang 79C976 */
995 for (i=31; i<36; i++) {
996 *buff++ = a->read_bcr(ioaddr, i);
997 }
998
999 /* read mii phy registers */
1000 if (lp->mii) {
1001 for (i=0; i<32; i++) {
1002 lp->a.write_bcr(ioaddr, 33, ((lp->mii_if.phy_id) << 5) | i);
1003 *buff++ = lp->a.read_bcr(ioaddr, 34);
1004 }
1005 }
1006
1007 if (!(csr0 & 0x0004)) { /* If not stopped */
1008 /* clear SUSPEND (SPND) - CSR5 bit 0 */
1009 a->write_csr(ioaddr, 5, 0x0000);
1010 }
1011
1012 i = buff - (u16 *)ptr;
1013 for (; i < PCNET32_NUM_REGS; i++)
1014 *buff++ = 0;
1015
1016 spin_unlock_irqrestore(&lp->lock, flags);
1017 }
1018
1019 static struct ethtool_ops pcnet32_ethtool_ops = {
1020 .get_settings = pcnet32_get_settings,
1021 .set_settings = pcnet32_set_settings,
1022 .get_drvinfo = pcnet32_get_drvinfo,
1023 .get_msglevel = pcnet32_get_msglevel,
1024 .set_msglevel = pcnet32_set_msglevel,
1025 .nway_reset = pcnet32_nway_reset,
1026 .get_link = pcnet32_get_link,
1027 .get_ringparam = pcnet32_get_ringparam,
1028 .set_ringparam = pcnet32_set_ringparam,
1029 .get_tx_csum = ethtool_op_get_tx_csum,
1030 .get_sg = ethtool_op_get_sg,
1031 .get_tso = ethtool_op_get_tso,
1032 .get_strings = pcnet32_get_strings,
1033 .self_test_count = pcnet32_self_test_count,
1034 .self_test = pcnet32_ethtool_test,
1035 .phys_id = pcnet32_phys_id,
1036 .get_regs_len = pcnet32_get_regs_len,
1037 .get_regs = pcnet32_get_regs,
1038 .get_perm_addr = ethtool_op_get_perm_addr,
1039 };
1040
1041 /* only probes for non-PCI devices, the rest are handled by
1042 * pci_register_driver via pcnet32_probe_pci */
1043
1044 static void __devinit
1045 pcnet32_probe_vlbus(void)
1046 {
1047 unsigned int *port, ioaddr;
1048
1049 /* search for PCnet32 VLB cards at known addresses */
1050 for (port = pcnet32_portlist; (ioaddr = *port); port++) {
1051 if (request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_vlbus")) {
1052 /* check if there is really a pcnet chip on that ioaddr */
1053 if ((inb(ioaddr + 14) == 0x57) && (inb(ioaddr + 15) == 0x57)) {
1054 pcnet32_probe1(ioaddr, 0, NULL);
1055 } else {
1056 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1057 }
1058 }
1059 }
1060 }
1061
1062
1063 static int __devinit
1064 pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent)
1065 {
1066 unsigned long ioaddr;
1067 int err;
1068
1069 err = pci_enable_device(pdev);
1070 if (err < 0) {
1071 if (pcnet32_debug & NETIF_MSG_PROBE)
1072 printk(KERN_ERR PFX "failed to enable device -- err=%d\n", err);
1073 return err;
1074 }
1075 pci_set_master(pdev);
1076
1077 ioaddr = pci_resource_start (pdev, 0);
1078 if (!ioaddr) {
1079 if (pcnet32_debug & NETIF_MSG_PROBE)
1080 printk (KERN_ERR PFX "card has no PCI IO resources, aborting\n");
1081 return -ENODEV;
1082 }
1083
1084 if (!pci_dma_supported(pdev, PCNET32_DMA_MASK)) {
1085 if (pcnet32_debug & NETIF_MSG_PROBE)
1086 printk(KERN_ERR PFX "architecture does not support 32bit PCI busmaster DMA\n");
1087 return -ENODEV;
1088 }
1089 if (request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci") == NULL) {
1090 if (pcnet32_debug & NETIF_MSG_PROBE)
1091 printk(KERN_ERR PFX "io address range already allocated\n");
1092 return -EBUSY;
1093 }
1094
1095 err = pcnet32_probe1(ioaddr, 1, pdev);
1096 if (err < 0) {
1097 pci_disable_device(pdev);
1098 }
1099 return err;
1100 }
1101
1102
1103 /* pcnet32_probe1
1104 * Called from both pcnet32_probe_vlbus and pcnet_probe_pci.
1105 * pdev will be NULL when called from pcnet32_probe_vlbus.
1106 */
1107 static int __devinit
1108 pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
1109 {
1110 struct pcnet32_private *lp;
1111 dma_addr_t lp_dma_addr;
1112 int i, media;
1113 int fdx, mii, fset, dxsuflo;
1114 int chip_version;
1115 char *chipname;
1116 struct net_device *dev;
1117 struct pcnet32_access *a = NULL;
1118 u8 promaddr[6];
1119 int ret = -ENODEV;
1120
1121 /* reset the chip */
1122 pcnet32_wio_reset(ioaddr);
1123
1124 /* NOTE: 16-bit check is first, otherwise some older PCnet chips fail */
1125 if (pcnet32_wio_read_csr(ioaddr, 0) == 4 && pcnet32_wio_check(ioaddr)) {
1126 a = &pcnet32_wio;
1127 } else {
1128 pcnet32_dwio_reset(ioaddr);
1129 if (pcnet32_dwio_read_csr(ioaddr, 0) == 4 && pcnet32_dwio_check(ioaddr)) {
1130 a = &pcnet32_dwio;
1131 } else
1132 goto err_release_region;
1133 }
1134
1135 chip_version = a->read_csr(ioaddr, 88) | (a->read_csr(ioaddr,89) << 16);
1136 if ((pcnet32_debug & NETIF_MSG_PROBE) && (pcnet32_debug & NETIF_MSG_HW))
1137 printk(KERN_INFO " PCnet chip version is %#x.\n", chip_version);
1138 if ((chip_version & 0xfff) != 0x003) {
1139 if (pcnet32_debug & NETIF_MSG_PROBE)
1140 printk(KERN_INFO PFX "Unsupported chip version.\n");
1141 goto err_release_region;
1142 }
1143
1144 /* initialize variables */
1145 fdx = mii = fset = dxsuflo = 0;
1146 chip_version = (chip_version >> 12) & 0xffff;
1147
1148 switch (chip_version) {
1149 case 0x2420:
1150 chipname = "PCnet/PCI 79C970"; /* PCI */
1151 break;
1152 case 0x2430:
1153 if (shared)
1154 chipname = "PCnet/PCI 79C970"; /* 970 gives the wrong chip id back */
1155 else
1156 chipname = "PCnet/32 79C965"; /* 486/VL bus */
1157 break;
1158 case 0x2621:
1159 chipname = "PCnet/PCI II 79C970A"; /* PCI */
1160 fdx = 1;
1161 break;
1162 case 0x2623:
1163 chipname = "PCnet/FAST 79C971"; /* PCI */
1164 fdx = 1; mii = 1; fset = 1;
1165 break;
1166 case 0x2624:
1167 chipname = "PCnet/FAST+ 79C972"; /* PCI */
1168 fdx = 1; mii = 1; fset = 1;
1169 break;
1170 case 0x2625:
1171 chipname = "PCnet/FAST III 79C973"; /* PCI */
1172 fdx = 1; mii = 1;
1173 break;
1174 case 0x2626:
1175 chipname = "PCnet/Home 79C978"; /* PCI */
1176 fdx = 1;
1177 /*
1178 * This is based on specs published at www.amd.com. This section
1179 * assumes that a card with a 79C978 wants to go into standard
1180 * ethernet mode. The 79C978 can also go into 1Mb HomePNA mode,
1181 * and the module option homepna=1 can select this instead.
1182 */
1183 media = a->read_bcr(ioaddr, 49);
1184 media &= ~3; /* default to 10Mb ethernet */
1185 if (cards_found < MAX_UNITS && homepna[cards_found])
1186 media |= 1; /* switch to home wiring mode */
1187 if (pcnet32_debug & NETIF_MSG_PROBE)
1188 printk(KERN_DEBUG PFX "media set to %sMbit mode.\n",
1189 (media & 1) ? "1" : "10");
1190 a->write_bcr(ioaddr, 49, media);
1191 break;
1192 case 0x2627:
1193 chipname = "PCnet/FAST III 79C975"; /* PCI */
1194 fdx = 1; mii = 1;
1195 break;
1196 case 0x2628:
1197 chipname = "PCnet/PRO 79C976";
1198 fdx = 1; mii = 1;
1199 break;
1200 default:
1201 if (pcnet32_debug & NETIF_MSG_PROBE)
1202 printk(KERN_INFO PFX "PCnet version %#x, no PCnet32 chip.\n",
1203 chip_version);
1204 goto err_release_region;
1205 }
1206
1207 /*
1208 * On selected chips turn on the BCR18:NOUFLO bit. This stops transmit
1209 * starting until the packet is loaded. Strike one for reliability, lose
1210 * one for latency - although on PCI this isnt a big loss. Older chips
1211 * have FIFO's smaller than a packet, so you can't do this.
1212 * Turn on BCR18:BurstRdEn and BCR18:BurstWrEn.
1213 */
1214
1215 if (fset) {
1216 a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0860));
1217 a->write_csr(ioaddr, 80, (a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00);
1218 dxsuflo = 1;
1219 }
1220
1221 dev = alloc_etherdev(0);
1222 if (!dev) {
1223 if (pcnet32_debug & NETIF_MSG_PROBE)
1224 printk(KERN_ERR PFX "Memory allocation failed.\n");
1225 ret = -ENOMEM;
1226 goto err_release_region;
1227 }
1228 SET_NETDEV_DEV(dev, &pdev->dev);
1229
1230 if (pcnet32_debug & NETIF_MSG_PROBE)
1231 printk(KERN_INFO PFX "%s at %#3lx,", chipname, ioaddr);
1232
1233 /* In most chips, after a chip reset, the ethernet address is read from the
1234 * station address PROM at the base address and programmed into the
1235 * "Physical Address Registers" CSR12-14.
1236 * As a precautionary measure, we read the PROM values and complain if
1237 * they disagree with the CSRs. Either way, we use the CSR values, and
1238 * double check that they are valid.
1239 */
1240 for (i = 0; i < 3; i++) {
1241 unsigned int val;
1242 val = a->read_csr(ioaddr, i+12) & 0x0ffff;
1243 /* There may be endianness issues here. */
1244 dev->dev_addr[2*i] = val & 0x0ff;
1245 dev->dev_addr[2*i+1] = (val >> 8) & 0x0ff;
1246 }
1247
1248 /* read PROM address and compare with CSR address */
1249 for (i = 0; i < 6; i++)
1250 promaddr[i] = inb(ioaddr + i);
1251
1252 if (memcmp(promaddr, dev->dev_addr, 6)
1253 || !is_valid_ether_addr(dev->dev_addr)) {
1254 if (is_valid_ether_addr(promaddr)) {
1255 if (pcnet32_debug & NETIF_MSG_PROBE) {
1256 printk(" warning: CSR address invalid,\n");
1257 printk(KERN_INFO " using instead PROM address of");
1258 }
1259 memcpy(dev->dev_addr, promaddr, 6);
1260 }
1261 }
1262 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1263
1264 /* if the ethernet address is not valid, force to 00:00:00:00:00:00 */
1265 if (!is_valid_ether_addr(dev->perm_addr))
1266 memset(dev->dev_addr, 0, sizeof(dev->dev_addr));
1267
1268 if (pcnet32_debug & NETIF_MSG_PROBE) {
1269 for (i = 0; i < 6; i++)
1270 printk(" %2.2x", dev->dev_addr[i]);
1271
1272 /* Version 0x2623 and 0x2624 */
1273 if (((chip_version + 1) & 0xfffe) == 0x2624) {
1274 i = a->read_csr(ioaddr, 80) & 0x0C00; /* Check tx_start_pt */
1275 printk("\n" KERN_INFO " tx_start_pt(0x%04x):",i);
1276 switch(i>>10) {
1277 case 0: printk(" 20 bytes,"); break;
1278 case 1: printk(" 64 bytes,"); break;
1279 case 2: printk(" 128 bytes,"); break;
1280 case 3: printk("~220 bytes,"); break;
1281 }
1282 i = a->read_bcr(ioaddr, 18); /* Check Burst/Bus control */
1283 printk(" BCR18(%x):",i&0xffff);
1284 if (i & (1<<5)) printk("BurstWrEn ");
1285 if (i & (1<<6)) printk("BurstRdEn ");
1286 if (i & (1<<7)) printk("DWordIO ");
1287 if (i & (1<<11)) printk("NoUFlow ");
1288 i = a->read_bcr(ioaddr, 25);
1289 printk("\n" KERN_INFO " SRAMSIZE=0x%04x,",i<<8);
1290 i = a->read_bcr(ioaddr, 26);
1291 printk(" SRAM_BND=0x%04x,",i<<8);
1292 i = a->read_bcr(ioaddr, 27);
1293 if (i & (1<<14)) printk("LowLatRx");
1294 }
1295 }
1296
1297 dev->base_addr = ioaddr;
1298 /* pci_alloc_consistent returns page-aligned memory, so we do not have to check the alignment */
1299 if ((lp = pci_alloc_consistent(pdev, sizeof(*lp), &lp_dma_addr)) == NULL) {
1300 if (pcnet32_debug & NETIF_MSG_PROBE)
1301 printk(KERN_ERR PFX "Consistent memory allocation failed.\n");
1302 ret = -ENOMEM;
1303 goto err_free_netdev;
1304 }
1305
1306 memset(lp, 0, sizeof(*lp));
1307 lp->dma_addr = lp_dma_addr;
1308 lp->pci_dev = pdev;
1309
1310 spin_lock_init(&lp->lock);
1311
1312 SET_MODULE_OWNER(dev);
1313 SET_NETDEV_DEV(dev, &pdev->dev);
1314 dev->priv = lp;
1315 lp->name = chipname;
1316 lp->shared_irq = shared;
1317 lp->tx_ring_size = TX_RING_SIZE; /* default tx ring size */
1318 lp->rx_ring_size = RX_RING_SIZE; /* default rx ring size */
1319 lp->tx_mod_mask = lp->tx_ring_size - 1;
1320 lp->rx_mod_mask = lp->rx_ring_size - 1;
1321 lp->tx_len_bits = (PCNET32_LOG_TX_BUFFERS << 12);
1322 lp->rx_len_bits = (PCNET32_LOG_RX_BUFFERS << 4);
1323 lp->mii_if.full_duplex = fdx;
1324 lp->mii_if.phy_id_mask = 0x1f;
1325 lp->mii_if.reg_num_mask = 0x1f;
1326 lp->dxsuflo = dxsuflo;
1327 lp->mii = mii;
1328 lp->msg_enable = pcnet32_debug;
1329 if ((cards_found >= MAX_UNITS) || (options[cards_found] > sizeof(options_mapping)))
1330 lp->options = PCNET32_PORT_ASEL;
1331 else
1332 lp->options = options_mapping[options[cards_found]];
1333 lp->mii_if.dev = dev;
1334 lp->mii_if.mdio_read = mdio_read;
1335 lp->mii_if.mdio_write = mdio_write;
1336
1337 if (fdx && !(lp->options & PCNET32_PORT_ASEL) &&
1338 ((cards_found>=MAX_UNITS) || full_duplex[cards_found]))
1339 lp->options |= PCNET32_PORT_FD;
1340
1341 if (!a) {
1342 if (pcnet32_debug & NETIF_MSG_PROBE)
1343 printk(KERN_ERR PFX "No access methods\n");
1344 ret = -ENODEV;
1345 goto err_free_consistent;
1346 }
1347 lp->a = *a;
1348
1349 /* prior to register_netdev, dev->name is not yet correct */
1350 if (pcnet32_alloc_ring(dev, pci_name(lp->pci_dev))) {
1351 ret = -ENOMEM;
1352 goto err_free_ring;
1353 }
1354 /* detect special T1/E1 WAN card by checking for MAC address */
1355 if (dev->dev_addr[0] == 0x00 && dev->dev_addr[1] == 0xe0
1356 && dev->dev_addr[2] == 0x75)
1357 lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI;
1358
1359 lp->init_block.mode = le16_to_cpu(0x0003); /* Disable Rx and Tx. */
1360 lp->init_block.tlen_rlen = le16_to_cpu(lp->tx_len_bits | lp->rx_len_bits);
1361 for (i = 0; i < 6; i++)
1362 lp->init_block.phys_addr[i] = dev->dev_addr[i];
1363 lp->init_block.filter[0] = 0x00000000;
1364 lp->init_block.filter[1] = 0x00000000;
1365 lp->init_block.rx_ring = (u32)le32_to_cpu(lp->rx_ring_dma_addr);
1366 lp->init_block.tx_ring = (u32)le32_to_cpu(lp->tx_ring_dma_addr);
1367
1368 /* switch pcnet32 to 32bit mode */
1369 a->write_bcr(ioaddr, 20, 2);
1370
1371 a->write_csr(ioaddr, 1, (lp->dma_addr + offsetof(struct pcnet32_private,
1372 init_block)) & 0xffff);
1373 a->write_csr(ioaddr, 2, (lp->dma_addr + offsetof(struct pcnet32_private,
1374 init_block)) >> 16);
1375
1376 if (pdev) { /* use the IRQ provided by PCI */
1377 dev->irq = pdev->irq;
1378 if (pcnet32_debug & NETIF_MSG_PROBE)
1379 printk(" assigned IRQ %d.\n", dev->irq);
1380 } else {
1381 unsigned long irq_mask = probe_irq_on();
1382
1383 /*
1384 * To auto-IRQ we enable the initialization-done and DMA error
1385 * interrupts. For ISA boards we get a DMA error, but VLB and PCI
1386 * boards will work.
1387 */
1388 /* Trigger an initialization just for the interrupt. */
1389 a->write_csr (ioaddr, 0, 0x41);
1390 mdelay (1);
1391
1392 dev->irq = probe_irq_off (irq_mask);
1393 if (!dev->irq) {
1394 if (pcnet32_debug & NETIF_MSG_PROBE)
1395 printk(", failed to detect IRQ line.\n");
1396 ret = -ENODEV;
1397 goto err_free_ring;
1398 }
1399 if (pcnet32_debug & NETIF_MSG_PROBE)
1400 printk(", probed IRQ %d.\n", dev->irq);
1401 }
1402
1403 /* Set the mii phy_id so that we can query the link state */
1404 if (lp->mii)
1405 lp->mii_if.phy_id = ((lp->a.read_bcr (ioaddr, 33)) >> 5) & 0x1f;
1406
1407 init_timer (&lp->watchdog_timer);
1408 lp->watchdog_timer.data = (unsigned long) dev;
1409 lp->watchdog_timer.function = (void *) &pcnet32_watchdog;
1410
1411 /* The PCNET32-specific entries in the device structure. */
1412 dev->open = &pcnet32_open;
1413 dev->hard_start_xmit = &pcnet32_start_xmit;
1414 dev->stop = &pcnet32_close;
1415 dev->get_stats = &pcnet32_get_stats;
1416 dev->set_multicast_list = &pcnet32_set_multicast_list;
1417 dev->do_ioctl = &pcnet32_ioctl;
1418 dev->ethtool_ops = &pcnet32_ethtool_ops;
1419 dev->tx_timeout = pcnet32_tx_timeout;
1420 dev->watchdog_timeo = (5*HZ);
1421
1422 #ifdef CONFIG_NET_POLL_CONTROLLER
1423 dev->poll_controller = pcnet32_poll_controller;
1424 #endif
1425
1426 /* Fill in the generic fields of the device structure. */
1427 if (register_netdev(dev))
1428 goto err_free_ring;
1429
1430 if (pdev) {
1431 pci_set_drvdata(pdev, dev);
1432 } else {
1433 lp->next = pcnet32_dev;
1434 pcnet32_dev = dev;
1435 }
1436
1437 if (pcnet32_debug & NETIF_MSG_PROBE)
1438 printk(KERN_INFO "%s: registered as %s\n", dev->name, lp->name);
1439 cards_found++;
1440
1441 /* enable LED writes */
1442 a->write_bcr(ioaddr, 2, a->read_bcr(ioaddr, 2) | 0x1000);
1443
1444 return 0;
1445
1446 err_free_ring:
1447 pcnet32_free_ring(dev);
1448 err_free_consistent:
1449 pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
1450 err_free_netdev:
1451 free_netdev(dev);
1452 err_release_region:
1453 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1454 return ret;
1455 }
1456
1457
1458 /* if any allocation fails, caller must also call pcnet32_free_ring */
1459 static int pcnet32_alloc_ring(struct net_device *dev, char *name)
1460 {
1461 struct pcnet32_private *lp = dev->priv;
1462
1463 lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
1464 sizeof(struct pcnet32_tx_head) * lp->tx_ring_size,
1465 &lp->tx_ring_dma_addr);
1466 if (lp->tx_ring == NULL) {
1467 if (pcnet32_debug & NETIF_MSG_DRV)
1468 printk("\n" KERN_ERR PFX "%s: Consistent memory allocation failed.\n",
1469 name);
1470 return -ENOMEM;
1471 }
1472
1473 lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
1474 sizeof(struct pcnet32_rx_head) * lp->rx_ring_size,
1475 &lp->rx_ring_dma_addr);
1476 if (lp->rx_ring == NULL) {
1477 if (pcnet32_debug & NETIF_MSG_DRV)
1478 printk("\n" KERN_ERR PFX "%s: Consistent memory allocation failed.\n",
1479 name);
1480 return -ENOMEM;
1481 }
1482
1483 lp->tx_dma_addr = kmalloc(sizeof(dma_addr_t) * lp->tx_ring_size,
1484 GFP_ATOMIC);
1485 if (!lp->tx_dma_addr) {
1486 if (pcnet32_debug & NETIF_MSG_DRV)
1487 printk("\n" KERN_ERR PFX "%s: Memory allocation failed.\n", name);
1488 return -ENOMEM;
1489 }
1490 memset(lp->tx_dma_addr, 0, sizeof(dma_addr_t) * lp->tx_ring_size);
1491
1492 lp->rx_dma_addr = kmalloc(sizeof(dma_addr_t) * lp->rx_ring_size,
1493 GFP_ATOMIC);
1494 if (!lp->rx_dma_addr) {
1495 if (pcnet32_debug & NETIF_MSG_DRV)
1496 printk("\n" KERN_ERR PFX "%s: Memory allocation failed.\n", name);
1497 return -ENOMEM;
1498 }
1499 memset(lp->rx_dma_addr, 0, sizeof(dma_addr_t) * lp->rx_ring_size);
1500
1501 lp->tx_skbuff = kmalloc(sizeof(struct sk_buff *) * lp->tx_ring_size,
1502 GFP_ATOMIC);
1503 if (!lp->tx_skbuff) {
1504 if (pcnet32_debug & NETIF_MSG_DRV)
1505 printk("\n" KERN_ERR PFX "%s: Memory allocation failed.\n", name);
1506 return -ENOMEM;
1507 }
1508 memset(lp->tx_skbuff, 0, sizeof(struct sk_buff *) * lp->tx_ring_size);
1509
1510 lp->rx_skbuff = kmalloc(sizeof(struct sk_buff *) * lp->rx_ring_size,
1511 GFP_ATOMIC);
1512 if (!lp->rx_skbuff) {
1513 if (pcnet32_debug & NETIF_MSG_DRV)
1514 printk("\n" KERN_ERR PFX "%s: Memory allocation failed.\n", name);
1515 return -ENOMEM;
1516 }
1517 memset(lp->rx_skbuff, 0, sizeof(struct sk_buff *) * lp->rx_ring_size);
1518
1519 return 0;
1520 }
1521
1522
1523 static void pcnet32_free_ring(struct net_device *dev)
1524 {
1525 struct pcnet32_private *lp = dev->priv;
1526
1527 kfree(lp->tx_skbuff);
1528 lp->tx_skbuff = NULL;
1529
1530 kfree(lp->rx_skbuff);
1531 lp->rx_skbuff = NULL;
1532
1533 kfree(lp->tx_dma_addr);
1534 lp->tx_dma_addr = NULL;
1535
1536 kfree(lp->rx_dma_addr);
1537 lp->rx_dma_addr = NULL;
1538
1539 if (lp->tx_ring) {
1540 pci_free_consistent(lp->pci_dev, sizeof(struct pcnet32_tx_head) * lp->tx_ring_size,
1541 lp->tx_ring, lp->tx_ring_dma_addr);
1542 lp->tx_ring = NULL;
1543 }
1544
1545 if (lp->rx_ring) {
1546 pci_free_consistent(lp->pci_dev, sizeof(struct pcnet32_rx_head) * lp->rx_ring_size,
1547 lp->rx_ring, lp->rx_ring_dma_addr);
1548 lp->rx_ring = NULL;
1549 }
1550 }
1551
1552
1553 static int
1554 pcnet32_open(struct net_device *dev)
1555 {
1556 struct pcnet32_private *lp = dev->priv;
1557 unsigned long ioaddr = dev->base_addr;
1558 u16 val;
1559 int i;
1560 int rc;
1561 unsigned long flags;
1562
1563 if (request_irq(dev->irq, &pcnet32_interrupt,
1564 lp->shared_irq ? SA_SHIRQ : 0, dev->name, (void *)dev)) {
1565 return -EAGAIN;
1566 }
1567
1568 spin_lock_irqsave(&lp->lock, flags);
1569 /* Check for a valid station address */
1570 if (!is_valid_ether_addr(dev->dev_addr)) {
1571 rc = -EINVAL;
1572 goto err_free_irq;
1573 }
1574
1575 /* Reset the PCNET32 */
1576 lp->a.reset (ioaddr);
1577
1578 /* switch pcnet32 to 32bit mode */
1579 lp->a.write_bcr (ioaddr, 20, 2);
1580
1581 if (netif_msg_ifup(lp))
1582 printk(KERN_DEBUG "%s: pcnet32_open() irq %d tx/rx rings %#x/%#x init %#x.\n",
1583 dev->name, dev->irq,
1584 (u32) (lp->tx_ring_dma_addr),
1585 (u32) (lp->rx_ring_dma_addr),
1586 (u32) (lp->dma_addr + offsetof(struct pcnet32_private, init_block)));
1587
1588 /* set/reset autoselect bit */
1589 val = lp->a.read_bcr (ioaddr, 2) & ~2;
1590 if (lp->options & PCNET32_PORT_ASEL)
1591 val |= 2;
1592 lp->a.write_bcr (ioaddr, 2, val);
1593
1594 /* handle full duplex setting */
1595 if (lp->mii_if.full_duplex) {
1596 val = lp->a.read_bcr (ioaddr, 9) & ~3;
1597 if (lp->options & PCNET32_PORT_FD) {
1598 val |= 1;
1599 if (lp->options == (PCNET32_PORT_FD | PCNET32_PORT_AUI))
1600 val |= 2;
1601 } else if (lp->options & PCNET32_PORT_ASEL) {
1602 /* workaround of xSeries250, turn on for 79C975 only */
1603 i = ((lp->a.read_csr(ioaddr, 88) |
1604 (lp->a.read_csr(ioaddr,89) << 16)) >> 12) & 0xffff;
1605 if (i == 0x2627)
1606 val |= 3;
1607 }
1608 lp->a.write_bcr (ioaddr, 9, val);
1609 }
1610
1611 /* set/reset GPSI bit in test register */
1612 val = lp->a.read_csr (ioaddr, 124) & ~0x10;
1613 if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI)
1614 val |= 0x10;
1615 lp->a.write_csr (ioaddr, 124, val);
1616
1617 /* Allied Telesyn AT 2700/2701 FX are 100Mbit only and do not negotiate */
1618 if (lp->pci_dev->subsystem_vendor == PCI_VENDOR_ID_AT &&
1619 (lp->pci_dev->subsystem_device == PCI_SUBDEVICE_ID_AT_2700FX ||
1620 lp->pci_dev->subsystem_device == PCI_SUBDEVICE_ID_AT_2701FX)) {
1621 if (lp->options & PCNET32_PORT_ASEL) {
1622 lp->options = PCNET32_PORT_FD | PCNET32_PORT_100;
1623 if (netif_msg_link(lp))
1624 printk(KERN_DEBUG "%s: Setting 100Mb-Full Duplex.\n",
1625 dev->name);
1626 }
1627 }
1628 {
1629 /*
1630 * 24 Jun 2004 according AMD, in order to change the PHY,
1631 * DANAS (or DISPM for 79C976) must be set; then select the speed,
1632 * duplex, and/or enable auto negotiation, and clear DANAS
1633 */
1634 if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) {
1635 lp->a.write_bcr(ioaddr, 32,
1636 lp->a.read_bcr(ioaddr, 32) | 0x0080);
1637 /* disable Auto Negotiation, set 10Mpbs, HD */
1638 val = lp->a.read_bcr(ioaddr, 32) & ~0xb8;
1639 if (lp->options & PCNET32_PORT_FD)
1640 val |= 0x10;
1641 if (lp->options & PCNET32_PORT_100)
1642 val |= 0x08;
1643 lp->a.write_bcr (ioaddr, 32, val);
1644 } else {
1645 if (lp->options & PCNET32_PORT_ASEL) {
1646 lp->a.write_bcr(ioaddr, 32,
1647 lp->a.read_bcr(ioaddr, 32) | 0x0080);
1648 /* enable auto negotiate, setup, disable fd */
1649 val = lp->a.read_bcr(ioaddr, 32) & ~0x98;
1650 val |= 0x20;
1651 lp->a.write_bcr(ioaddr, 32, val);
1652 }
1653 }
1654 }
1655
1656 #ifdef DO_DXSUFLO
1657 if (lp->dxsuflo) { /* Disable transmit stop on underflow */
1658 val = lp->a.read_csr (ioaddr, 3);
1659 val |= 0x40;
1660 lp->a.write_csr (ioaddr, 3, val);
1661 }
1662 #endif
1663
1664 lp->init_block.mode = le16_to_cpu((lp->options & PCNET32_PORT_PORTSEL) << 7);
1665 pcnet32_load_multicast(dev);
1666
1667 if (pcnet32_init_ring(dev)) {
1668 rc = -ENOMEM;
1669 goto err_free_ring;
1670 }
1671
1672 /* Re-initialize the PCNET32, and start it when done. */
1673 lp->a.write_csr (ioaddr, 1, (lp->dma_addr +
1674 offsetof(struct pcnet32_private, init_block)) & 0xffff);
1675 lp->a.write_csr (ioaddr, 2, (lp->dma_addr +
1676 offsetof(struct pcnet32_private, init_block)) >> 16);
1677
1678 lp->a.write_csr (ioaddr, 4, 0x0915);
1679 lp->a.write_csr (ioaddr, 0, 0x0001);
1680
1681 netif_start_queue(dev);
1682
1683 /* If we have mii, print the link status and start the watchdog */
1684 if (lp->mii) {
1685 mii_check_media (&lp->mii_if, netif_msg_link(lp), 1);
1686 mod_timer (&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
1687 }
1688
1689 i = 0;
1690 while (i++ < 100)
1691 if (lp->a.read_csr (ioaddr, 0) & 0x0100)
1692 break;
1693 /*
1694 * We used to clear the InitDone bit, 0x0100, here but Mark Stockton
1695 * reports that doing so triggers a bug in the '974.
1696 */
1697 lp->a.write_csr (ioaddr, 0, 0x0042);
1698
1699 if (netif_msg_ifup(lp))
1700 printk(KERN_DEBUG "%s: pcnet32 open after %d ticks, init block %#x csr0 %4.4x.\n",
1701 dev->name, i, (u32) (lp->dma_addr +
1702 offsetof(struct pcnet32_private, init_block)),
1703 lp->a.read_csr(ioaddr, 0));
1704
1705 spin_unlock_irqrestore(&lp->lock, flags);
1706
1707 return 0; /* Always succeed */
1708
1709 err_free_ring:
1710 /* free any allocated skbuffs */
1711 for (i = 0; i < lp->rx_ring_size; i++) {
1712 lp->rx_ring[i].status = 0;
1713 if (lp->rx_skbuff[i]) {
1714 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i], PKT_BUF_SZ-2,
1715 PCI_DMA_FROMDEVICE);
1716 dev_kfree_skb(lp->rx_skbuff[i]);
1717 }
1718 lp->rx_skbuff[i] = NULL;
1719 lp->rx_dma_addr[i] = 0;
1720 }
1721
1722 pcnet32_free_ring(dev);
1723
1724 /*
1725 * Switch back to 16bit mode to avoid problems with dumb
1726 * DOS packet driver after a warm reboot
1727 */
1728 lp->a.write_bcr (ioaddr, 20, 4);
1729
1730 err_free_irq:
1731 spin_unlock_irqrestore(&lp->lock, flags);
1732 free_irq(dev->irq, dev);
1733 return rc;
1734 }
1735
1736 /*
1737 * The LANCE has been halted for one reason or another (busmaster memory
1738 * arbitration error, Tx FIFO underflow, driver stopped it to reconfigure,
1739 * etc.). Modern LANCE variants always reload their ring-buffer
1740 * configuration when restarted, so we must reinitialize our ring
1741 * context before restarting. As part of this reinitialization,
1742 * find all packets still on the Tx ring and pretend that they had been
1743 * sent (in effect, drop the packets on the floor) - the higher-level
1744 * protocols will time out and retransmit. It'd be better to shuffle
1745 * these skbs to a temp list and then actually re-Tx them after
1746 * restarting the chip, but I'm too lazy to do so right now. dplatt@3do.com
1747 */
1748
1749 static void
1750 pcnet32_purge_tx_ring(struct net_device *dev)
1751 {
1752 struct pcnet32_private *lp = dev->priv;
1753 int i;
1754
1755 for (i = 0; i < lp->tx_ring_size; i++) {
1756 lp->tx_ring[i].status = 0; /* CPU owns buffer */
1757 wmb(); /* Make sure adapter sees owner change */
1758 if (lp->tx_skbuff[i]) {
1759 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[i],
1760 lp->tx_skbuff[i]->len, PCI_DMA_TODEVICE);
1761 dev_kfree_skb_any(lp->tx_skbuff[i]);
1762 }
1763 lp->tx_skbuff[i] = NULL;
1764 lp->tx_dma_addr[i] = 0;
1765 }
1766 }
1767
1768
1769 /* Initialize the PCNET32 Rx and Tx rings. */
1770 static int
1771 pcnet32_init_ring(struct net_device *dev)
1772 {
1773 struct pcnet32_private *lp = dev->priv;
1774 int i;
1775
1776 lp->tx_full = 0;
1777 lp->cur_rx = lp->cur_tx = 0;
1778 lp->dirty_rx = lp->dirty_tx = 0;
1779
1780 for (i = 0; i < lp->rx_ring_size; i++) {
1781 struct sk_buff *rx_skbuff = lp->rx_skbuff[i];
1782 if (rx_skbuff == NULL) {
1783 if (!(rx_skbuff = lp->rx_skbuff[i] = dev_alloc_skb (PKT_BUF_SZ))) {
1784 /* there is not much, we can do at this point */
1785 if (pcnet32_debug & NETIF_MSG_DRV)
1786 printk(KERN_ERR "%s: pcnet32_init_ring dev_alloc_skb failed.\n",
1787 dev->name);
1788 return -1;
1789 }
1790 skb_reserve (rx_skbuff, 2);
1791 }
1792
1793 rmb();
1794 if (lp->rx_dma_addr[i] == 0)
1795 lp->rx_dma_addr[i] = pci_map_single(lp->pci_dev, rx_skbuff->data,
1796 PKT_BUF_SZ-2, PCI_DMA_FROMDEVICE);
1797 lp->rx_ring[i].base = (u32)le32_to_cpu(lp->rx_dma_addr[i]);
1798 lp->rx_ring[i].buf_length = le16_to_cpu(2-PKT_BUF_SZ);
1799 wmb(); /* Make sure owner changes after all others are visible */
1800 lp->rx_ring[i].status = le16_to_cpu(0x8000);
1801 }
1802 /* The Tx buffer address is filled in as needed, but we do need to clear
1803 * the upper ownership bit. */
1804 for (i = 0; i < lp->tx_ring_size; i++) {
1805 lp->tx_ring[i].status = 0; /* CPU owns buffer */
1806 wmb(); /* Make sure adapter sees owner change */
1807 lp->tx_ring[i].base = 0;
1808 lp->tx_dma_addr[i] = 0;
1809 }
1810
1811 lp->init_block.tlen_rlen = le16_to_cpu(lp->tx_len_bits | lp->rx_len_bits);
1812 for (i = 0; i < 6; i++)
1813 lp->init_block.phys_addr[i] = dev->dev_addr[i];
1814 lp->init_block.rx_ring = (u32)le32_to_cpu(lp->rx_ring_dma_addr);
1815 lp->init_block.tx_ring = (u32)le32_to_cpu(lp->tx_ring_dma_addr);
1816 wmb(); /* Make sure all changes are visible */
1817 return 0;
1818 }
1819
1820 /* the pcnet32 has been issued a stop or reset. Wait for the stop bit
1821 * then flush the pending transmit operations, re-initialize the ring,
1822 * and tell the chip to initialize.
1823 */
1824 static void
1825 pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
1826 {
1827 struct pcnet32_private *lp = dev->priv;
1828 unsigned long ioaddr = dev->base_addr;
1829 int i;
1830
1831 /* wait for stop */
1832 for (i=0; i<100; i++)
1833 if (lp->a.read_csr(ioaddr, 0) & 0x0004)
1834 break;
1835
1836 if (i >= 100 && netif_msg_drv(lp))
1837 printk(KERN_ERR "%s: pcnet32_restart timed out waiting for stop.\n",
1838 dev->name);
1839
1840 pcnet32_purge_tx_ring(dev);
1841 if (pcnet32_init_ring(dev))
1842 return;
1843
1844 /* ReInit Ring */
1845 lp->a.write_csr (ioaddr, 0, 1);
1846 i = 0;
1847 while (i++ < 1000)
1848 if (lp->a.read_csr (ioaddr, 0) & 0x0100)
1849 break;
1850
1851 lp->a.write_csr (ioaddr, 0, csr0_bits);
1852 }
1853
1854
1855 static void
1856 pcnet32_tx_timeout (struct net_device *dev)
1857 {
1858 struct pcnet32_private *lp = dev->priv;
1859 unsigned long ioaddr = dev->base_addr, flags;
1860
1861 spin_lock_irqsave(&lp->lock, flags);
1862 /* Transmitter timeout, serious problems. */
1863 if (pcnet32_debug & NETIF_MSG_DRV)
1864 printk(KERN_ERR "%s: transmit timed out, status %4.4x, resetting.\n",
1865 dev->name, lp->a.read_csr(ioaddr, 0));
1866 lp->a.write_csr (ioaddr, 0, 0x0004);
1867 lp->stats.tx_errors++;
1868 if (netif_msg_tx_err(lp)) {
1869 int i;
1870 printk(KERN_DEBUG " Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.",
1871 lp->dirty_tx, lp->cur_tx, lp->tx_full ? " (full)" : "",
1872 lp->cur_rx);
1873 for (i = 0 ; i < lp->rx_ring_size; i++)
1874 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
1875 le32_to_cpu(lp->rx_ring[i].base),
1876 (-le16_to_cpu(lp->rx_ring[i].buf_length)) & 0xffff,
1877 le32_to_cpu(lp->rx_ring[i].msg_length),
1878 le16_to_cpu(lp->rx_ring[i].status));
1879 for (i = 0 ; i < lp->tx_ring_size; i++)
1880 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
1881 le32_to_cpu(lp->tx_ring[i].base),
1882 (-le16_to_cpu(lp->tx_ring[i].length)) & 0xffff,
1883 le32_to_cpu(lp->tx_ring[i].misc),
1884 le16_to_cpu(lp->tx_ring[i].status));
1885 printk("\n");
1886 }
1887 pcnet32_restart(dev, 0x0042);
1888
1889 dev->trans_start = jiffies;
1890 netif_wake_queue(dev);
1891
1892 spin_unlock_irqrestore(&lp->lock, flags);
1893 }
1894
1895
1896 static int
1897 pcnet32_start_xmit(struct sk_buff *skb, struct net_device *dev)
1898 {
1899 struct pcnet32_private *lp = dev->priv;
1900 unsigned long ioaddr = dev->base_addr;
1901 u16 status;
1902 int entry;
1903 unsigned long flags;
1904
1905 spin_lock_irqsave(&lp->lock, flags);
1906
1907 if (netif_msg_tx_queued(lp)) {
1908 printk(KERN_DEBUG "%s: pcnet32_start_xmit() called, csr0 %4.4x.\n",
1909 dev->name, lp->a.read_csr(ioaddr, 0));
1910 }
1911
1912 /* Default status -- will not enable Successful-TxDone
1913 * interrupt when that option is available to us.
1914 */
1915 status = 0x8300;
1916
1917 /* Fill in a Tx ring entry */
1918
1919 /* Mask to ring buffer boundary. */
1920 entry = lp->cur_tx & lp->tx_mod_mask;
1921
1922 /* Caution: the write order is important here, set the status
1923 * with the "ownership" bits last. */
1924
1925 lp->tx_ring[entry].length = le16_to_cpu(-skb->len);
1926
1927 lp->tx_ring[entry].misc = 0x00000000;
1928
1929 lp->tx_skbuff[entry] = skb;
1930 lp->tx_dma_addr[entry] = pci_map_single(lp->pci_dev, skb->data, skb->len,
1931 PCI_DMA_TODEVICE);
1932 lp->tx_ring[entry].base = (u32)le32_to_cpu(lp->tx_dma_addr[entry]);
1933 wmb(); /* Make sure owner changes after all others are visible */
1934 lp->tx_ring[entry].status = le16_to_cpu(status);
1935
1936 lp->cur_tx++;
1937 lp->stats.tx_bytes += skb->len;
1938
1939 /* Trigger an immediate send poll. */
1940 lp->a.write_csr (ioaddr, 0, 0x0048);
1941
1942 dev->trans_start = jiffies;
1943
1944 if (lp->tx_ring[(entry+1) & lp->tx_mod_mask].base != 0) {
1945 lp->tx_full = 1;
1946 netif_stop_queue(dev);
1947 }
1948 spin_unlock_irqrestore(&lp->lock, flags);
1949 return 0;
1950 }
1951
1952 /* The PCNET32 interrupt handler. */
1953 static irqreturn_t
1954 pcnet32_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1955 {
1956 struct net_device *dev = dev_id;
1957 struct pcnet32_private *lp;
1958 unsigned long ioaddr;
1959 u16 csr0,rap;
1960 int boguscnt = max_interrupt_work;
1961 int must_restart;
1962
1963 if (!dev) {
1964 if (pcnet32_debug & NETIF_MSG_INTR)
1965 printk (KERN_DEBUG "%s(): irq %d for unknown device\n",
1966 __FUNCTION__, irq);
1967 return IRQ_NONE;
1968 }
1969
1970 ioaddr = dev->base_addr;
1971 lp = dev->priv;
1972
1973 spin_lock(&lp->lock);
1974
1975 rap = lp->a.read_rap(ioaddr);
1976 while ((csr0 = lp->a.read_csr (ioaddr, 0)) & 0x8f00 && --boguscnt >= 0) {
1977 if (csr0 == 0xffff) {
1978 break; /* PCMCIA remove happened */
1979 }
1980 /* Acknowledge all of the current interrupt sources ASAP. */
1981 lp->a.write_csr (ioaddr, 0, csr0 & ~0x004f);
1982
1983 must_restart = 0;
1984
1985 if (netif_msg_intr(lp))
1986 printk(KERN_DEBUG "%s: interrupt csr0=%#2.2x new csr=%#2.2x.\n",
1987 dev->name, csr0, lp->a.read_csr (ioaddr, 0));
1988
1989 if (csr0 & 0x0400) /* Rx interrupt */
1990 pcnet32_rx(dev);
1991
1992 if (csr0 & 0x0200) { /* Tx-done interrupt */
1993 unsigned int dirty_tx = lp->dirty_tx;
1994 int delta;
1995
1996 while (dirty_tx != lp->cur_tx) {
1997 int entry = dirty_tx & lp->tx_mod_mask;
1998 int status = (short)le16_to_cpu(lp->tx_ring[entry].status);
1999
2000 if (status < 0)
2001 break; /* It still hasn't been Txed */
2002
2003 lp->tx_ring[entry].base = 0;
2004
2005 if (status & 0x4000) {
2006 /* There was an major error, log it. */
2007 int err_status = le32_to_cpu(lp->tx_ring[entry].misc);
2008 lp->stats.tx_errors++;
2009 if (netif_msg_tx_err(lp))
2010 printk(KERN_ERR "%s: Tx error status=%04x err_status=%08x\n",
2011 dev->name, status, err_status);
2012 if (err_status & 0x04000000) lp->stats.tx_aborted_errors++;
2013 if (err_status & 0x08000000) lp->stats.tx_carrier_errors++;
2014 if (err_status & 0x10000000) lp->stats.tx_window_errors++;
2015 #ifndef DO_DXSUFLO
2016 if (err_status & 0x40000000) {
2017 lp->stats.tx_fifo_errors++;
2018 /* Ackk! On FIFO errors the Tx unit is turned off! */
2019 /* Remove this verbosity later! */
2020 if (netif_msg_tx_err(lp))
2021 printk(KERN_ERR "%s: Tx FIFO error! CSR0=%4.4x\n",
2022 dev->name, csr0);
2023 must_restart = 1;
2024 }
2025 #else
2026 if (err_status & 0x40000000) {
2027 lp->stats.tx_fifo_errors++;
2028 if (! lp->dxsuflo) { /* If controller doesn't recover ... */
2029 /* Ackk! On FIFO errors the Tx unit is turned off! */
2030 /* Remove this verbosity later! */
2031 if (netif_msg_tx_err(lp))
2032 printk(KERN_ERR "%s: Tx FIFO error! CSR0=%4.4x\n",
2033 dev->name, csr0);
2034 must_restart = 1;
2035 }
2036 }
2037 #endif
2038 } else {
2039 if (status & 0x1800)
2040 lp->stats.collisions++;
2041 lp->stats.tx_packets++;
2042 }
2043
2044 /* We must free the original skb */
2045 if (lp->tx_skbuff[entry]) {
2046 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[entry],
2047 lp->tx_skbuff[entry]->len, PCI_DMA_TODEVICE);
2048 dev_kfree_skb_irq(lp->tx_skbuff[entry]);
2049 lp->tx_skbuff[entry] = NULL;
2050 lp->tx_dma_addr[entry] = 0;
2051 }
2052 dirty_tx++;
2053 }
2054
2055 delta = (lp->cur_tx - dirty_tx) & (lp->tx_mod_mask + lp->tx_ring_size);
2056 if (delta > lp->tx_ring_size) {
2057 if (netif_msg_drv(lp))
2058 printk(KERN_ERR "%s: out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
2059 dev->name, dirty_tx, lp->cur_tx, lp->tx_full);
2060 dirty_tx += lp->tx_ring_size;
2061 delta -= lp->tx_ring_size;
2062 }
2063
2064 if (lp->tx_full &&
2065 netif_queue_stopped(dev) &&
2066 delta < lp->tx_ring_size - 2) {
2067 /* The ring is no longer full, clear tbusy. */
2068 lp->tx_full = 0;
2069 netif_wake_queue (dev);
2070 }
2071 lp->dirty_tx = dirty_tx;
2072 }
2073
2074 /* Log misc errors. */
2075 if (csr0 & 0x4000) lp->stats.tx_errors++; /* Tx babble. */
2076 if (csr0 & 0x1000) {
2077 /*
2078 * this happens when our receive ring is full. This shouldn't
2079 * be a problem as we will see normal rx interrupts for the frames
2080 * in the receive ring. But there are some PCI chipsets (I can
2081 * reproduce this on SP3G with Intel saturn chipset) which have
2082 * sometimes problems and will fill up the receive ring with
2083 * error descriptors. In this situation we don't get a rx
2084 * interrupt, but a missed frame interrupt sooner or later.
2085 * So we try to clean up our receive ring here.
2086 */
2087 pcnet32_rx(dev);
2088 lp->stats.rx_errors++; /* Missed a Rx frame. */
2089 }
2090 if (csr0 & 0x0800) {
2091 if (netif_msg_drv(lp))
2092 printk(KERN_ERR "%s: Bus master arbitration failure, status %4.4x.\n",
2093 dev->name, csr0);
2094 /* unlike for the lance, there is no restart needed */
2095 }
2096
2097 if (must_restart) {
2098 /* reset the chip to clear the error condition, then restart */
2099 lp->a.reset(ioaddr);
2100 lp->a.write_csr(ioaddr, 4, 0x0915);
2101 pcnet32_restart(dev, 0x0002);
2102 netif_wake_queue(dev);
2103 }
2104 }
2105
2106 /* Set interrupt enable. */
2107 lp->a.write_csr (ioaddr, 0, 0x0040);
2108 lp->a.write_rap (ioaddr,rap);
2109
2110 if (netif_msg_intr(lp))
2111 printk(KERN_DEBUG "%s: exiting interrupt, csr0=%#4.4x.\n",
2112 dev->name, lp->a.read_csr (ioaddr, 0));
2113
2114 spin_unlock(&lp->lock);
2115
2116 return IRQ_HANDLED;
2117 }
2118
2119 static int
2120 pcnet32_rx(struct net_device *dev)
2121 {
2122 struct pcnet32_private *lp = dev->priv;
2123 int entry = lp->cur_rx & lp->rx_mod_mask;
2124 int boguscnt = lp->rx_ring_size / 2;
2125
2126 /* If we own the next entry, it's a new packet. Send it up. */
2127 while ((short)le16_to_cpu(lp->rx_ring[entry].status) >= 0) {
2128 int status = (short)le16_to_cpu(lp->rx_ring[entry].status) >> 8;
2129
2130 if (status != 0x03) { /* There was an error. */
2131 /*
2132 * There is a tricky error noted by John Murphy,
2133 * <murf@perftech.com> to Russ Nelson: Even with full-sized
2134 * buffers it's possible for a jabber packet to use two
2135 * buffers, with only the last correctly noting the error.
2136 */
2137 if (status & 0x01) /* Only count a general error at the */
2138 lp->stats.rx_errors++; /* end of a packet.*/
2139 if (status & 0x20) lp->stats.rx_frame_errors++;
2140 if (status & 0x10) lp->stats.rx_over_errors++;
2141 if (status & 0x08) lp->stats.rx_crc_errors++;
2142 if (status & 0x04) lp->stats.rx_fifo_errors++;
2143 lp->rx_ring[entry].status &= le16_to_cpu(0x03ff);
2144 } else {
2145 /* Malloc up new buffer, compatible with net-2e. */
2146 short pkt_len = (le32_to_cpu(lp->rx_ring[entry].msg_length) & 0xfff)-4;
2147 struct sk_buff *skb;
2148
2149 /* Discard oversize frames. */
2150 if (unlikely(pkt_len > PKT_BUF_SZ - 2)) {
2151 if (netif_msg_drv(lp))
2152 printk(KERN_ERR "%s: Impossible packet size %d!\n",
2153 dev->name, pkt_len);
2154 lp->stats.rx_errors++;
2155 } else if (pkt_len < 60) {
2156 if (netif_msg_rx_err(lp))
2157 printk(KERN_ERR "%s: Runt packet!\n", dev->name);
2158 lp->stats.rx_errors++;
2159 } else {
2160 int rx_in_place = 0;
2161
2162 if (pkt_len > rx_copybreak) {
2163 struct sk_buff *newskb;
2164
2165 if ((newskb = dev_alloc_skb(PKT_BUF_SZ))) {
2166 skb_reserve (newskb, 2);
2167 skb = lp->rx_skbuff[entry];
2168 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[entry],
2169 PKT_BUF_SZ-2, PCI_DMA_FROMDEVICE);
2170 skb_put (skb, pkt_len);
2171 lp->rx_skbuff[entry] = newskb;
2172 newskb->dev = dev;
2173 lp->rx_dma_addr[entry] =
2174 pci_map_single(lp->pci_dev, newskb->data,
2175 PKT_BUF_SZ-2, PCI_DMA_FROMDEVICE);
2176 lp->rx_ring[entry].base = le32_to_cpu(lp->rx_dma_addr[entry]);
2177 rx_in_place = 1;
2178 } else
2179 skb = NULL;
2180 } else {
2181 skb = dev_alloc_skb(pkt_len+2);
2182 }
2183
2184 if (skb == NULL) {
2185 int i;
2186 if (netif_msg_drv(lp))
2187 printk(KERN_ERR "%s: Memory squeeze, deferring packet.\n",
2188 dev->name);
2189 for (i = 0; i < lp->rx_ring_size; i++)
2190 if ((short)le16_to_cpu(lp->rx_ring[(entry+i)
2191 & lp->rx_mod_mask].status) < 0)
2192 break;
2193
2194 if (i > lp->rx_ring_size -2) {
2195 lp->stats.rx_dropped++;
2196 lp->rx_ring[entry].status |= le16_to_cpu(0x8000);
2197 wmb(); /* Make sure adapter sees owner change */
2198 lp->cur_rx++;
2199 }
2200 break;
2201 }
2202 skb->dev = dev;
2203 if (!rx_in_place) {
2204 skb_reserve(skb,2); /* 16 byte align */
2205 skb_put(skb,pkt_len); /* Make room */
2206 pci_dma_sync_single_for_cpu(lp->pci_dev,
2207 lp->rx_dma_addr[entry],
2208 PKT_BUF_SZ-2,
2209 PCI_DMA_FROMDEVICE);
2210 eth_copy_and_sum(skb,
2211 (unsigned char *)(lp->rx_skbuff[entry]->data),
2212 pkt_len,0);
2213 pci_dma_sync_single_for_device(lp->pci_dev,
2214 lp->rx_dma_addr[entry],
2215 PKT_BUF_SZ-2,
2216 PCI_DMA_FROMDEVICE);
2217 }
2218 lp->stats.rx_bytes += skb->len;
2219 skb->protocol=eth_type_trans(skb,dev);
2220 netif_rx(skb);
2221 dev->last_rx = jiffies;
2222 lp->stats.rx_packets++;
2223 }
2224 }
2225 /*
2226 * The docs say that the buffer length isn't touched, but Andrew Boyd
2227 * of QNX reports that some revs of the 79C965 clear it.
2228 */
2229 lp->rx_ring[entry].buf_length = le16_to_cpu(2-PKT_BUF_SZ);
2230 wmb(); /* Make sure owner changes after all others are visible */
2231 lp->rx_ring[entry].status |= le16_to_cpu(0x8000);
2232 entry = (++lp->cur_rx) & lp->rx_mod_mask;
2233 if (--boguscnt <= 0) break; /* don't stay in loop forever */
2234 }
2235
2236 return 0;
2237 }
2238
2239 static int
2240 pcnet32_close(struct net_device *dev)
2241 {
2242 unsigned long ioaddr = dev->base_addr;
2243 struct pcnet32_private *lp = dev->priv;
2244 int i;
2245 unsigned long flags;
2246
2247 del_timer_sync(&lp->watchdog_timer);
2248
2249 netif_stop_queue(dev);
2250
2251 spin_lock_irqsave(&lp->lock, flags);
2252
2253 lp->stats.rx_missed_errors = lp->a.read_csr (ioaddr, 112);
2254
2255 if (netif_msg_ifdown(lp))
2256 printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n",
2257 dev->name, lp->a.read_csr (ioaddr, 0));
2258
2259 /* We stop the PCNET32 here -- it occasionally polls memory if we don't. */
2260 lp->a.write_csr (ioaddr, 0, 0x0004);
2261
2262 /*
2263 * Switch back to 16bit mode to avoid problems with dumb
2264 * DOS packet driver after a warm reboot
2265 */
2266 lp->a.write_bcr (ioaddr, 20, 4);
2267
2268 spin_unlock_irqrestore(&lp->lock, flags);
2269
2270 free_irq(dev->irq, dev);
2271
2272 spin_lock_irqsave(&lp->lock, flags);
2273
2274 /* free all allocated skbuffs */
2275 for (i = 0; i < lp->rx_ring_size; i++) {
2276 lp->rx_ring[i].status = 0;
2277 wmb(); /* Make sure adapter sees owner change */
2278 if (lp->rx_skbuff[i]) {
2279 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i], PKT_BUF_SZ-2,
2280 PCI_DMA_FROMDEVICE);
2281 dev_kfree_skb(lp->rx_skbuff[i]);
2282 }
2283 lp->rx_skbuff[i] = NULL;
2284 lp->rx_dma_addr[i] = 0;
2285 }
2286
2287 for (i = 0; i < lp->tx_ring_size; i++) {
2288 lp->tx_ring[i].status = 0; /* CPU owns buffer */
2289 wmb(); /* Make sure adapter sees owner change */
2290 if (lp->tx_skbuff[i]) {
2291 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[i],
2292 lp->tx_skbuff[i]->len, PCI_DMA_TODEVICE);
2293 dev_kfree_skb(lp->tx_skbuff[i]);
2294 }
2295 lp->tx_skbuff[i] = NULL;
2296 lp->tx_dma_addr[i] = 0;
2297 }
2298
2299 spin_unlock_irqrestore(&lp->lock, flags);
2300
2301 return 0;
2302 }
2303
2304 static struct net_device_stats *
2305 pcnet32_get_stats(struct net_device *dev)
2306 {
2307 struct pcnet32_private *lp = dev->priv;
2308 unsigned long ioaddr = dev->base_addr;
2309 u16 saved_addr;
2310 unsigned long flags;
2311
2312 spin_lock_irqsave(&lp->lock, flags);
2313 saved_addr = lp->a.read_rap(ioaddr);
2314 lp->stats.rx_missed_errors = lp->a.read_csr (ioaddr, 112);
2315 lp->a.write_rap(ioaddr, saved_addr);
2316 spin_unlock_irqrestore(&lp->lock, flags);
2317
2318 return &lp->stats;
2319 }
2320
2321 /* taken from the sunlance driver, which it took from the depca driver */
2322 static void pcnet32_load_multicast (struct net_device *dev)
2323 {
2324 struct pcnet32_private *lp = dev->priv;
2325 volatile struct pcnet32_init_block *ib = &lp->init_block;
2326 volatile u16 *mcast_table = (u16 *)&ib->filter;
2327 struct dev_mc_list *dmi=dev->mc_list;
2328 char *addrs;
2329 int i;
2330 u32 crc;
2331
2332 /* set all multicast bits */
2333 if (dev->flags & IFF_ALLMULTI) {
2334 ib->filter[0] = 0xffffffff;
2335 ib->filter[1] = 0xffffffff;
2336 return;
2337 }
2338 /* clear the multicast filter */
2339 ib->filter[0] = 0;
2340 ib->filter[1] = 0;
2341
2342 /* Add addresses */
2343 for (i = 0; i < dev->mc_count; i++) {
2344 addrs = dmi->dmi_addr;
2345 dmi = dmi->next;
2346
2347 /* multicast address? */
2348 if (!(*addrs & 1))
2349 continue;
2350
2351 crc = ether_crc_le(6, addrs);
2352 crc = crc >> 26;
2353 mcast_table [crc >> 4] = le16_to_cpu(
2354 le16_to_cpu(mcast_table [crc >> 4]) | (1 << (crc & 0xf)));
2355 }
2356 return;
2357 }
2358
2359
2360 /*
2361 * Set or clear the multicast filter for this adaptor.
2362 */
2363 static void pcnet32_set_multicast_list(struct net_device *dev)
2364 {
2365 unsigned long ioaddr = dev->base_addr, flags;
2366 struct pcnet32_private *lp = dev->priv;
2367
2368 spin_lock_irqsave(&lp->lock, flags);
2369 if (dev->flags&IFF_PROMISC) {
2370 /* Log any net taps. */
2371 if (netif_msg_hw(lp))
2372 printk(KERN_INFO "%s: Promiscuous mode enabled.\n", dev->name);
2373 lp->init_block.mode = le16_to_cpu(0x8000 | (lp->options & PCNET32_PORT_PORTSEL) << 7);
2374 } else {
2375 lp->init_block.mode = le16_to_cpu((lp->options & PCNET32_PORT_PORTSEL) << 7);
2376 pcnet32_load_multicast (dev);
2377 }
2378
2379 lp->a.write_csr (ioaddr, 0, 0x0004); /* Temporarily stop the lance. */
2380 pcnet32_restart(dev, 0x0042); /* Resume normal operation */
2381 netif_wake_queue(dev);
2382
2383 spin_unlock_irqrestore(&lp->lock, flags);
2384 }
2385
2386 /* This routine assumes that the lp->lock is held */
2387 static int mdio_read(struct net_device *dev, int phy_id, int reg_num)
2388 {
2389 struct pcnet32_private *lp = dev->priv;
2390 unsigned long ioaddr = dev->base_addr;
2391 u16 val_out;
2392
2393 if (!lp->mii)
2394 return 0;
2395
2396 lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2397 val_out = lp->a.read_bcr(ioaddr, 34);
2398
2399 return val_out;
2400 }
2401
2402 /* This routine assumes that the lp->lock is held */
2403 static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val)
2404 {
2405 struct pcnet32_private *lp = dev->priv;
2406 unsigned long ioaddr = dev->base_addr;
2407
2408 if (!lp->mii)
2409 return;
2410
2411 lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2412 lp->a.write_bcr(ioaddr, 34, val);
2413 }
2414
2415 static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2416 {
2417 struct pcnet32_private *lp = dev->priv;
2418 int rc;
2419 unsigned long flags;
2420
2421 /* SIOC[GS]MIIxxx ioctls */
2422 if (lp->mii) {
2423 spin_lock_irqsave(&lp->lock, flags);
2424 rc = generic_mii_ioctl(&lp->mii_if, if_mii(rq), cmd, NULL);
2425 spin_unlock_irqrestore(&lp->lock, flags);
2426 } else {
2427 rc = -EOPNOTSUPP;
2428 }
2429
2430 return rc;
2431 }
2432
2433 static void pcnet32_watchdog(struct net_device *dev)
2434 {
2435 struct pcnet32_private *lp = dev->priv;
2436 unsigned long flags;
2437
2438 /* Print the link status if it has changed */
2439 if (lp->mii) {
2440 spin_lock_irqsave(&lp->lock, flags);
2441 mii_check_media (&lp->mii_if, netif_msg_link(lp), 0);
2442 spin_unlock_irqrestore(&lp->lock, flags);
2443 }
2444
2445 mod_timer (&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
2446 }
2447
2448 static void __devexit pcnet32_remove_one(struct pci_dev *pdev)
2449 {
2450 struct net_device *dev = pci_get_drvdata(pdev);
2451
2452 if (dev) {
2453 struct pcnet32_private *lp = dev->priv;
2454
2455 unregister_netdev(dev);
2456 pcnet32_free_ring(dev);
2457 release_region(dev->base_addr, PCNET32_TOTAL_SIZE);
2458 pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
2459 free_netdev(dev);
2460 pci_disable_device(pdev);
2461 pci_set_drvdata(pdev, NULL);
2462 }
2463 }
2464
2465 static struct pci_driver pcnet32_driver = {
2466 .name = DRV_NAME,
2467 .probe = pcnet32_probe_pci,
2468 .remove = __devexit_p(pcnet32_remove_one),
2469 .id_table = pcnet32_pci_tbl,
2470 };
2471
2472 /* An additional parameter that may be passed in... */
2473 static int debug = -1;
2474 static int tx_start_pt = -1;
2475 static int pcnet32_have_pci;
2476
2477 module_param(debug, int, 0);
2478 MODULE_PARM_DESC(debug, DRV_NAME " debug level");
2479 module_param(max_interrupt_work, int, 0);
2480 MODULE_PARM_DESC(max_interrupt_work, DRV_NAME " maximum events handled per interrupt");
2481 module_param(rx_copybreak, int, 0);
2482 MODULE_PARM_DESC(rx_copybreak, DRV_NAME " copy breakpoint for copy-only-tiny-frames");
2483 module_param(tx_start_pt, int, 0);
2484 MODULE_PARM_DESC(tx_start_pt, DRV_NAME " transmit start point (0-3)");
2485 module_param(pcnet32vlb, int, 0);
2486 MODULE_PARM_DESC(pcnet32vlb, DRV_NAME " Vesa local bus (VLB) support (0/1)");
2487 module_param_array(options, int, NULL, 0);
2488 MODULE_PARM_DESC(options, DRV_NAME " initial option setting(s) (0-15)");
2489 module_param_array(full_duplex, int, NULL, 0);
2490 MODULE_PARM_DESC(full_duplex, DRV_NAME " full duplex setting(s) (1)");
2491 /* Module Parameter for HomePNA cards added by Patrick Simmons, 2004 */
2492 module_param_array(homepna, int, NULL, 0);
2493 MODULE_PARM_DESC(homepna, DRV_NAME " mode for 79C978 cards (1 for HomePNA, 0 for Ethernet, default Ethernet");
2494
2495 MODULE_AUTHOR("Thomas Bogendoerfer");
2496 MODULE_DESCRIPTION("Driver for PCnet32 and PCnetPCI based ethercards");
2497 MODULE_LICENSE("GPL");
2498
2499 #define PCNET32_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
2500
2501 static int __init pcnet32_init_module(void)
2502 {
2503 printk(KERN_INFO "%s", version);
2504
2505 pcnet32_debug = netif_msg_init(debug, PCNET32_MSG_DEFAULT);
2506
2507 if ((tx_start_pt >= 0) && (tx_start_pt <= 3))
2508 tx_start = tx_start_pt;
2509
2510 /* find the PCI devices */
2511 if (!pci_module_init(&pcnet32_driver))
2512 pcnet32_have_pci = 1;
2513
2514 /* should we find any remaining VLbus devices ? */
2515 if (pcnet32vlb)
2516 pcnet32_probe_vlbus();
2517
2518 if (cards_found && (pcnet32_debug & NETIF_MSG_PROBE))
2519 printk(KERN_INFO PFX "%d cards_found.\n", cards_found);
2520
2521 return (pcnet32_have_pci + cards_found) ? 0 : -ENODEV;
2522 }
2523
2524 static void __exit pcnet32_cleanup_module(void)
2525 {
2526 struct net_device *next_dev;
2527
2528 while (pcnet32_dev) {
2529 struct pcnet32_private *lp = pcnet32_dev->priv;
2530 next_dev = lp->next;
2531 unregister_netdev(pcnet32_dev);
2532 pcnet32_free_ring(pcnet32_dev);
2533 release_region(pcnet32_dev->base_addr, PCNET32_TOTAL_SIZE);
2534 pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
2535 free_netdev(pcnet32_dev);
2536 pcnet32_dev = next_dev;
2537 }
2538
2539 if (pcnet32_have_pci)
2540 pci_unregister_driver(&pcnet32_driver);
2541 }
2542
2543 module_init(pcnet32_init_module);
2544 module_exit(pcnet32_cleanup_module);
2545
2546 /*
2547 * Local variables:
2548 * c-indent-level: 4
2549 * tab-width: 8
2550 * End:
2551 */
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