blob: 3fcebb70151c82fbbab06026f2dc636f3baff7d9 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* ne2k-pci.c: A NE2000 clone on PCI bus driver for Linux. */
2/*
3 A Linux device driver for PCI NE2000 clones.
4
5 Authors and other copyright holders:
6 1992-2000 by Donald Becker, NE2000 core and various modifications.
7 1995-1998 by Paul Gortmaker, core modifications and PCI support.
8 Copyright 1993 assigned to the United States Government as represented
9 by the Director, National Security Agency.
10
11 This software may be used and distributed according to the terms of
12 the GNU General Public License (GPL), incorporated herein by reference.
13 Drivers based on or derived from this code fall under the GPL and must
14 retain the authorship, copyright and license notice. This file is not
15 a complete program and may only be used when the entire operating
16 system is licensed under the GPL.
17
18 The author may be reached as becker@scyld.com, or C/O
19 Scyld Computing Corporation
20 410 Severn Ave., Suite 210
21 Annapolis MD 21403
22
23 Issues remaining:
24 People are making PCI ne2000 clones! Oh the horror, the horror...
25 Limited full-duplex support.
26*/
27
28#define DRV_NAME "ne2k-pci"
29#define DRV_VERSION "1.03"
30#define DRV_RELDATE "9/22/2003"
31
32
33/* The user-configurable values.
34 These may be modified when a driver module is loaded.*/
35
36static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
37
38#define MAX_UNITS 8 /* More are supported, limit only on options */
39/* Used to pass the full-duplex flag, etc. */
40static int full_duplex[MAX_UNITS];
41static int options[MAX_UNITS];
42
43/* Force a non std. amount of memory. Units are 256 byte pages. */
44/* #define PACKETBUF_MEMSIZE 0x40 */
45
46
47#include <linux/module.h>
48#include <linux/kernel.h>
49#include <linux/errno.h>
50#include <linux/pci.h>
51#include <linux/init.h>
52#include <linux/interrupt.h>
53#include <linux/ethtool.h>
54#include <linux/netdevice.h>
55#include <linux/etherdevice.h>
56
57#include <asm/system.h>
58#include <asm/io.h>
59#include <asm/irq.h>
60#include <asm/uaccess.h>
61
62#include "8390.h"
63
64/* These identify the driver base version and may not be removed. */
Stephen Hemminger8937bb72009-02-26 10:19:25 +000065static const char version[] __devinitconst =
66 KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE
67 " D. Becker/P. Gortmaker\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -070068
69#if defined(__powerpc__)
70#define inl_le(addr) le32_to_cpu(inl(addr))
71#define inw_le(addr) le16_to_cpu(inw(addr))
72#endif
73
74#define PFX DRV_NAME ": "
75
76MODULE_AUTHOR("Donald Becker / Paul Gortmaker");
77MODULE_DESCRIPTION("PCI NE2000 clone driver");
78MODULE_LICENSE("GPL");
79
80module_param(debug, int, 0);
81module_param_array(options, int, NULL, 0);
82module_param_array(full_duplex, int, NULL, 0);
83MODULE_PARM_DESC(debug, "debug level (1-2)");
84MODULE_PARM_DESC(options, "Bit 5: full duplex");
85MODULE_PARM_DESC(full_duplex, "full duplex setting(s) (1)");
86
87/* Some defines that people can play with if so inclined. */
88
89/* Use 32 bit data-movement operations instead of 16 bit. */
90#define USE_LONGIO
91
92/* Do we implement the read before write bugfix ? */
93/* #define NE_RW_BUGFIX */
94
95/* Flags. We rename an existing ei_status field to store flags! */
96/* Thus only the low 8 bits are usable for non-init-time flags. */
97#define ne2k_flags reg0
98enum {
99 ONLY_16BIT_IO=8, ONLY_32BIT_IO=4, /* Chip can do only 16/32-bit xfers. */
100 FORCE_FDX=0x20, /* User override. */
101 REALTEK_FDX=0x40, HOLTEK_FDX=0x80,
102 STOP_PG_0x60=0x100,
103};
104
105enum ne2k_pci_chipsets {
106 CH_RealTek_RTL_8029 = 0,
107 CH_Winbond_89C940,
108 CH_Compex_RL2000,
109 CH_KTI_ET32P2,
110 CH_NetVin_NV5000SC,
111 CH_Via_86C926,
112 CH_SureCom_NE34,
113 CH_Winbond_W89C940F,
114 CH_Holtek_HT80232,
115 CH_Holtek_HT80229,
116 CH_Winbond_89C940_8c4a,
117};
118
119
Hormsb2fd16b2006-03-23 16:36:28 +0900120static struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 char *name;
122 int flags;
123} pci_clone_list[] __devinitdata = {
124 {"RealTek RTL-8029", REALTEK_FDX},
125 {"Winbond 89C940", 0},
126 {"Compex RL2000", 0},
127 {"KTI ET32P2", 0},
128 {"NetVin NV5000SC", 0},
129 {"Via 86C926", ONLY_16BIT_IO},
130 {"SureCom NE34", 0},
131 {"Winbond W89C940F", 0},
132 {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX},
133 {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 },
134 {"Winbond W89C940(misprogrammed)", 0},
135 {NULL,}
136};
137
138
139static struct pci_device_id ne2k_pci_tbl[] = {
140 { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 },
141 { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 },
142 { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 },
143 { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 },
144 { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC },
145 { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 },
146 { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 },
147 { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F },
148 { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 },
149 { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 },
150 { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a },
151 { 0, }
152};
153MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl);
154
155
156/* ---- No user-serviceable parts below ---- */
157
158#define NE_BASE (dev->base_addr)
159#define NE_CMD 0x00
160#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
161#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
162#define NE_IO_EXTENT 0x20
163
164#define NESM_START_PG 0x40 /* First page of TX buffer */
165#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
166
167
168static int ne2k_pci_open(struct net_device *dev);
169static int ne2k_pci_close(struct net_device *dev);
170
171static void ne2k_pci_reset_8390(struct net_device *dev);
172static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
173 int ring_page);
174static void ne2k_pci_block_input(struct net_device *dev, int count,
175 struct sk_buff *skb, int ring_offset);
176static void ne2k_pci_block_output(struct net_device *dev, const int count,
177 const unsigned char *buf, const int start_page);
Jeff Garzik7282d492006-09-13 14:30:00 -0400178static const struct ethtool_ops ne2k_pci_ethtool_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400180
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
182/* There is no room in the standard 8390 structure for extra info we need,
183 so we build a meta/outer-wrapper structure.. */
184struct ne2k_pci_card {
185 struct net_device *dev;
186 struct pci_dev *pci_dev;
187};
188
189
190
191/*
192 NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet
193 buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes
194 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be
195 detected by their SA prefix.
196
197 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
198 mode results in doubled values, which can be detected and compensated for.
199
200 The probe is also responsible for initializing the card and filling
201 in the 'dev' and 'ei_status' structures.
202*/
203
Stephen Hemminger4e4fd4e2008-11-21 17:39:02 -0800204static const struct net_device_ops ne2k_netdev_ops = {
205 .ndo_open = ne2k_pci_open,
206 .ndo_stop = ne2k_pci_close,
207 .ndo_start_xmit = ei_start_xmit,
208 .ndo_tx_timeout = ei_tx_timeout,
209 .ndo_get_stats = ei_get_stats,
210 .ndo_set_multicast_list = ei_set_multicast_list,
211 .ndo_validate_addr = eth_validate_addr,
Stephen Hemmingerfe96aaa2009-01-09 11:13:14 +0000212 .ndo_set_mac_address = eth_mac_addr,
Stephen Hemminger4e4fd4e2008-11-21 17:39:02 -0800213 .ndo_change_mtu = eth_change_mtu,
214#ifdef CONFIG_NET_POLL_CONTROLLER
215 .ndo_poll_controller = ei_poll,
216#endif
217};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218
219static int __devinit ne2k_pci_init_one (struct pci_dev *pdev,
220 const struct pci_device_id *ent)
221{
222 struct net_device *dev;
223 int i;
224 unsigned char SA_prom[32];
225 int start_page, stop_page;
226 int irq, reg0, chip_idx = ent->driver_data;
227 static unsigned int fnd_cnt;
228 long ioaddr;
229 int flags = pci_clone_list[chip_idx].flags;
230
231/* when built into the kernel, we only print version if device is found */
232#ifndef MODULE
233 static int printed_version;
234 if (!printed_version++)
235 printk(version);
236#endif
237
238 fnd_cnt++;
239
240 i = pci_enable_device (pdev);
241 if (i)
242 return i;
243
244 ioaddr = pci_resource_start (pdev, 0);
245 irq = pdev->irq;
246
247 if (!ioaddr || ((pci_resource_flags (pdev, 0) & IORESOURCE_IO) == 0)) {
Jeff Garzik9b91cf92006-06-27 11:39:50 -0400248 dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 return -ENODEV;
250 }
251
252 if (request_region (ioaddr, NE_IO_EXTENT, DRV_NAME) == NULL) {
Jeff Garzik9b91cf92006-06-27 11:39:50 -0400253 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 NE_IO_EXTENT, ioaddr);
255 return -EBUSY;
256 }
257
258 reg0 = inb(ioaddr);
259 if (reg0 == 0xFF)
260 goto err_out_free_res;
261
262 /* Do a preliminary verification that we have a 8390. */
263 {
264 int regd;
265 outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
266 regd = inb(ioaddr + 0x0d);
267 outb(0xff, ioaddr + 0x0d);
268 outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
269 inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
270 if (inb(ioaddr + EN0_COUNTER0) != 0) {
271 outb(reg0, ioaddr);
272 outb(regd, ioaddr + 0x0d); /* Restore the old values. */
273 goto err_out_free_res;
274 }
275 }
276
277 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
278 dev = alloc_ei_netdev();
279 if (!dev) {
Jeff Garzik9b91cf92006-06-27 11:39:50 -0400280 dev_err(&pdev->dev, "cannot allocate ethernet device\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 goto err_out_free_res;
282 }
Stephen Hemminger4e4fd4e2008-11-21 17:39:02 -0800283 dev->netdev_ops = &ne2k_netdev_ops;
284
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 SET_NETDEV_DEV(dev, &pdev->dev);
286
287 /* Reset card. Who knows what dain-bramaged state it was left in. */
288 {
289 unsigned long reset_start_time = jiffies;
290
291 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
292
293 /* This looks like a horrible timing loop, but it should never take
294 more than a few cycles.
295 */
296 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
297 /* Limit wait: '2' avoids jiffy roll-over. */
298 if (jiffies - reset_start_time > 2) {
Jeff Garzik9b91cf92006-06-27 11:39:50 -0400299 dev_err(&pdev->dev,
Jeff Garzik2e8a5382006-06-27 10:47:51 -0400300 "Card failure (no reset ack).\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 goto err_out_free_netdev;
302 }
303
304 outb(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
305 }
306
307 /* Read the 16 bytes of station address PROM.
308 We must first initialize registers, similar to NS8390_init(eifdev, 0).
309 We can't reliably read the SAPROM address without this.
310 (I learned the hard way!). */
311 {
312 struct {unsigned char value, offset; } program_seq[] = {
313 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
314 {0x49, EN0_DCFG}, /* Set word-wide access. */
315 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
316 {0x00, EN0_RCNTHI},
317 {0x00, EN0_IMR}, /* Mask completion irq. */
318 {0xFF, EN0_ISR},
319 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
320 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
321 {32, EN0_RCNTLO},
322 {0x00, EN0_RCNTHI},
323 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
324 {0x00, EN0_RSARHI},
325 {E8390_RREAD+E8390_START, E8390_CMD},
326 };
Denis Chengff8ac602007-09-02 18:30:18 +0800327 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 outb(program_seq[i].value, ioaddr + program_seq[i].offset);
329
330 }
331
332 /* Note: all PCI cards have at least 16 bit access, so we don't have
333 to check for 8 bit cards. Most cards permit 32 bit access. */
334 if (flags & ONLY_32BIT_IO) {
335 for (i = 0; i < 4 ; i++)
336 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
337 } else
338 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++)
339 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
340
341 /* We always set the 8390 registers for word mode. */
342 outb(0x49, ioaddr + EN0_DCFG);
343 start_page = NESM_START_PG;
344
345 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
346
347 /* Set up the rest of the parameters. */
348 dev->irq = irq;
349 dev->base_addr = ioaddr;
350 pci_set_drvdata(pdev, dev);
351
352 ei_status.name = pci_clone_list[chip_idx].name;
353 ei_status.tx_start_page = start_page;
354 ei_status.stop_page = stop_page;
355 ei_status.word16 = 1;
356 ei_status.ne2k_flags = flags;
357 if (fnd_cnt < MAX_UNITS) {
358 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX))
359 ei_status.ne2k_flags |= FORCE_FDX;
360 }
361
362 ei_status.rx_start_page = start_page + TX_PAGES;
363#ifdef PACKETBUF_MEMSIZE
364 /* Allow the packet buffer size to be overridden by know-it-alls. */
365 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
366#endif
367
368 ei_status.reset_8390 = &ne2k_pci_reset_8390;
369 ei_status.block_input = &ne2k_pci_block_input;
370 ei_status.block_output = &ne2k_pci_block_output;
371 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
372 ei_status.priv = (unsigned long) pdev;
Stephen Hemminger4e4fd4e2008-11-21 17:39:02 -0800373
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 dev->ethtool_ops = &ne2k_pci_ethtool_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 NS8390_init(dev, 0);
376
Jiri Pirkoeb457f32009-05-02 23:55:06 +0000377 memcpy(dev->dev_addr, SA_prom, dev->addr_len);
Lubomir Rintel379b0262009-05-02 13:52:13 -0700378 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
379
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 i = register_netdev(dev);
381 if (i)
382 goto err_out_free_netdev;
383
Johannes Berge1749612008-10-27 15:59:26 -0700384 printk("%s: %s found at %#lx, IRQ %d, %pM.\n",
Joe Perches0795af52007-10-03 17:59:30 -0700385 dev->name, pci_clone_list[chip_idx].name, ioaddr, dev->irq,
Johannes Berge1749612008-10-27 15:59:26 -0700386 dev->dev_addr);
Joe Perches0795af52007-10-03 17:59:30 -0700387
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 return 0;
389
390err_out_free_netdev:
391 free_netdev (dev);
392err_out_free_res:
393 release_region (ioaddr, NE_IO_EXTENT);
394 pci_set_drvdata (pdev, NULL);
395 return -ENODEV;
396
397}
398
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400399/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 * Magic incantation sequence for full duplex on the supported cards.
401 */
402static inline int set_realtek_fdx(struct net_device *dev)
403{
404 long ioaddr = dev->base_addr;
405
406 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
407 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
408 outb(0x40, ioaddr + 0x06); /* Enable full duplex */
409 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
410 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
411 return 0;
412}
413
414static inline int set_holtek_fdx(struct net_device *dev)
415{
416 long ioaddr = dev->base_addr;
417
418 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
419 return 0;
420}
421
422static int ne2k_pci_set_fdx(struct net_device *dev)
423{
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400424 if (ei_status.ne2k_flags & REALTEK_FDX)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 return set_realtek_fdx(dev);
426 else if (ei_status.ne2k_flags & HOLTEK_FDX)
427 return set_holtek_fdx(dev);
428
429 return -EOPNOTSUPP;
430}
431
432static int ne2k_pci_open(struct net_device *dev)
433{
Thomas Gleixner1fb9df52006-07-01 19:29:39 -0700434 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, dev->name, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 if (ret)
436 return ret;
437
438 if (ei_status.ne2k_flags & FORCE_FDX)
439 ne2k_pci_set_fdx(dev);
440
441 ei_open(dev);
442 return 0;
443}
444
445static int ne2k_pci_close(struct net_device *dev)
446{
447 ei_close(dev);
448 free_irq(dev->irq, dev);
449 return 0;
450}
451
452/* Hard reset the card. This used to pause for the same period that a
453 8390 reset command required, but that shouldn't be necessary. */
454static void ne2k_pci_reset_8390(struct net_device *dev)
455{
456 unsigned long reset_start_time = jiffies;
457
458 if (debug > 1) printk("%s: Resetting the 8390 t=%ld...",
459 dev->name, jiffies);
460
461 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
462
463 ei_status.txing = 0;
464 ei_status.dmaing = 0;
465
466 /* This check _should_not_ be necessary, omit eventually. */
467 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
468 if (jiffies - reset_start_time > 2) {
469 printk("%s: ne2k_pci_reset_8390() did not complete.\n", dev->name);
470 break;
471 }
472 outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
473}
474
475/* Grab the 8390 specific header. Similar to the block_input routine, but
476 we don't need to be concerned with ring wrap as the header will be at
477 the start of a page, so we optimize accordingly. */
478
479static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
480{
481
482 long nic_base = dev->base_addr;
483
484 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
485 if (ei_status.dmaing) {
486 printk("%s: DMAing conflict in ne2k_pci_get_8390_hdr "
487 "[DMAstat:%d][irqlock:%d].\n",
488 dev->name, ei_status.dmaing, ei_status.irqlock);
489 return;
490 }
491
492 ei_status.dmaing |= 0x01;
493 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
494 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
495 outb(0, nic_base + EN0_RCNTHI);
496 outb(0, nic_base + EN0_RSARLO); /* On page boundary */
497 outb(ring_page, nic_base + EN0_RSARHI);
498 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
499
500 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
501 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
502 } else {
503 *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
504 le16_to_cpus(&hdr->count);
505 }
506
507 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
508 ei_status.dmaing &= ~0x01;
509}
510
511/* Block input and output, similar to the Crynwr packet driver. If you
512 are porting to a new ethercard, look at the packet driver source for hints.
513 The NEx000 doesn't share the on-board packet memory -- you have to put
514 the packet out through the "remote DMA" dataport using outb. */
515
516static void ne2k_pci_block_input(struct net_device *dev, int count,
517 struct sk_buff *skb, int ring_offset)
518{
519 long nic_base = dev->base_addr;
520 char *buf = skb->data;
521
522 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
523 if (ei_status.dmaing) {
524 printk("%s: DMAing conflict in ne2k_pci_block_input "
525 "[DMAstat:%d][irqlock:%d].\n",
526 dev->name, ei_status.dmaing, ei_status.irqlock);
527 return;
528 }
529 ei_status.dmaing |= 0x01;
530 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
531 count = (count + 3) & 0xFFFC;
532 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
533 outb(count & 0xff, nic_base + EN0_RCNTLO);
534 outb(count >> 8, nic_base + EN0_RCNTHI);
535 outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
536 outb(ring_offset >> 8, nic_base + EN0_RSARHI);
537 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
538
539 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
540 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
541 if (count & 0x01) {
542 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
543 }
544 } else {
545 insl(NE_BASE + NE_DATAPORT, buf, count>>2);
546 if (count & 3) {
547 buf += count & ~3;
548 if (count & 2) {
Al Viro3b5e26f2008-03-16 22:22:34 +0000549 __le16 *b = (__le16 *)buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550
Al Viro3b5e26f2008-03-16 22:22:34 +0000551 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 buf = (char *)b;
553 }
554 if (count & 1)
555 *buf = inb(NE_BASE + NE_DATAPORT);
556 }
557 }
558
559 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
560 ei_status.dmaing &= ~0x01;
561}
562
563static void ne2k_pci_block_output(struct net_device *dev, int count,
564 const unsigned char *buf, const int start_page)
565{
566 long nic_base = NE_BASE;
567 unsigned long dma_start;
568
569 /* On little-endian it's always safe to round the count up for
570 word writes. */
571 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
572 count = (count + 3) & 0xFFFC;
573 else
574 if (count & 0x01)
575 count++;
576
577 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
578 if (ei_status.dmaing) {
579 printk("%s: DMAing conflict in ne2k_pci_block_output."
580 "[DMAstat:%d][irqlock:%d]\n",
581 dev->name, ei_status.dmaing, ei_status.irqlock);
582 return;
583 }
584 ei_status.dmaing |= 0x01;
585 /* We should already be in page 0, but to be safe... */
586 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
587
588#ifdef NE8390_RW_BUGFIX
589 /* Handle the read-before-write bug the same way as the
590 Crynwr packet driver -- the NatSemi method doesn't work.
591 Actually this doesn't always work either, but if you have
592 problems with your NEx000 this is better than nothing! */
593 outb(0x42, nic_base + EN0_RCNTLO);
594 outb(0x00, nic_base + EN0_RCNTHI);
595 outb(0x42, nic_base + EN0_RSARLO);
596 outb(0x00, nic_base + EN0_RSARHI);
597 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
598#endif
599 outb(ENISR_RDC, nic_base + EN0_ISR);
600
601 /* Now the normal output. */
602 outb(count & 0xff, nic_base + EN0_RCNTLO);
603 outb(count >> 8, nic_base + EN0_RCNTHI);
604 outb(0x00, nic_base + EN0_RSARLO);
605 outb(start_page, nic_base + EN0_RSARHI);
606 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
607 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
608 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
609 } else {
610 outsl(NE_BASE + NE_DATAPORT, buf, count>>2);
611 if (count & 3) {
612 buf += count & ~3;
613 if (count & 2) {
Al Viro3b5e26f2008-03-16 22:22:34 +0000614 __le16 *b = (__le16 *)buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615
Al Viro3b5e26f2008-03-16 22:22:34 +0000616 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 buf = (char *)b;
618 }
619 }
620 }
621
622 dma_start = jiffies;
623
624 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
625 if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */
626 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
627 ne2k_pci_reset_8390(dev);
628 NS8390_init(dev,1);
629 break;
630 }
631
632 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
633 ei_status.dmaing &= ~0x01;
634 return;
635}
636
637static void ne2k_pci_get_drvinfo(struct net_device *dev,
638 struct ethtool_drvinfo *info)
639{
Wang Chen4cf16532008-11-12 23:38:14 -0800640 struct ei_device *ei = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
642
643 strcpy(info->driver, DRV_NAME);
644 strcpy(info->version, DRV_VERSION);
645 strcpy(info->bus_info, pci_name(pci_dev));
646}
647
Jeff Garzik7282d492006-09-13 14:30:00 -0400648static const struct ethtool_ops ne2k_pci_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 .get_drvinfo = ne2k_pci_get_drvinfo,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650};
651
652static void __devexit ne2k_pci_remove_one (struct pci_dev *pdev)
653{
654 struct net_device *dev = pci_get_drvdata(pdev);
655
Eric Sesterhenn5d9428d2006-04-02 13:52:48 +0200656 BUG_ON(!dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 unregister_netdev(dev);
658 release_region(dev->base_addr, NE_IO_EXTENT);
659 free_netdev(dev);
660 pci_disable_device(pdev);
661 pci_set_drvdata(pdev, NULL);
662}
663
664#ifdef CONFIG_PM
665static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
666{
667 struct net_device *dev = pci_get_drvdata (pdev);
668
669 netif_device_detach(dev);
670 pci_save_state(pdev);
David Shaohua Lid58da592005-03-18 16:43:54 -0500671 pci_disable_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 pci_set_power_state(pdev, pci_choose_state(pdev, state));
673
674 return 0;
675}
676
677static int ne2k_pci_resume (struct pci_dev *pdev)
678{
679 struct net_device *dev = pci_get_drvdata (pdev);
Jeff Garzikcad1b9d2007-07-17 00:15:54 -0400680 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681
682 pci_set_power_state(pdev, 0);
683 pci_restore_state(pdev);
Jeff Garzikcad1b9d2007-07-17 00:15:54 -0400684
685 rc = pci_enable_device(pdev);
686 if (rc)
687 return rc;
688
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689 NS8390_init(dev, 1);
690 netif_device_attach(dev);
691
692 return 0;
693}
694
695#endif /* CONFIG_PM */
696
697
698static struct pci_driver ne2k_driver = {
699 .name = DRV_NAME,
700 .probe = ne2k_pci_init_one,
701 .remove = __devexit_p(ne2k_pci_remove_one),
702 .id_table = ne2k_pci_tbl,
703#ifdef CONFIG_PM
704 .suspend = ne2k_pci_suspend,
705 .resume = ne2k_pci_resume,
706#endif /* CONFIG_PM */
707
708};
709
710
711static int __init ne2k_pci_init(void)
712{
713/* when a module, this is printed whether or not devices are found in probe */
714#ifdef MODULE
715 printk(version);
716#endif
Jeff Garzik29917622006-08-19 17:48:59 -0400717 return pci_register_driver(&ne2k_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718}
719
720
721static void __exit ne2k_pci_cleanup(void)
722{
723 pci_unregister_driver (&ne2k_driver);
724}
725
726module_init(ne2k_pci_init);
727module_exit(ne2k_pci_cleanup);