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1da177e4 LT |
1 | /* 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 | ||
36 | static 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. */ | |
40 | static int full_duplex[MAX_UNITS]; | |
41 | static 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. */ | |
65 | static char version[] __devinitdata = | |
2c2a8c53 | 66 | KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " D. Becker/P. Gortmaker\n"; |
1da177e4 LT |
67 | |
68 | #if defined(__powerpc__) | |
69 | #define inl_le(addr) le32_to_cpu(inl(addr)) | |
70 | #define inw_le(addr) le16_to_cpu(inw(addr)) | |
71 | #endif | |
72 | ||
73 | #define PFX DRV_NAME ": " | |
74 | ||
75 | MODULE_AUTHOR("Donald Becker / Paul Gortmaker"); | |
76 | MODULE_DESCRIPTION("PCI NE2000 clone driver"); | |
77 | MODULE_LICENSE("GPL"); | |
78 | ||
79 | module_param(debug, int, 0); | |
80 | module_param_array(options, int, NULL, 0); | |
81 | module_param_array(full_duplex, int, NULL, 0); | |
82 | MODULE_PARM_DESC(debug, "debug level (1-2)"); | |
83 | MODULE_PARM_DESC(options, "Bit 5: full duplex"); | |
84 | MODULE_PARM_DESC(full_duplex, "full duplex setting(s) (1)"); | |
85 | ||
86 | /* Some defines that people can play with if so inclined. */ | |
87 | ||
88 | /* Use 32 bit data-movement operations instead of 16 bit. */ | |
89 | #define USE_LONGIO | |
90 | ||
91 | /* Do we implement the read before write bugfix ? */ | |
92 | /* #define NE_RW_BUGFIX */ | |
93 | ||
94 | /* Flags. We rename an existing ei_status field to store flags! */ | |
95 | /* Thus only the low 8 bits are usable for non-init-time flags. */ | |
96 | #define ne2k_flags reg0 | |
97 | enum { | |
98 | ONLY_16BIT_IO=8, ONLY_32BIT_IO=4, /* Chip can do only 16/32-bit xfers. */ | |
99 | FORCE_FDX=0x20, /* User override. */ | |
100 | REALTEK_FDX=0x40, HOLTEK_FDX=0x80, | |
101 | STOP_PG_0x60=0x100, | |
102 | }; | |
103 | ||
104 | enum ne2k_pci_chipsets { | |
105 | CH_RealTek_RTL_8029 = 0, | |
106 | CH_Winbond_89C940, | |
107 | CH_Compex_RL2000, | |
108 | CH_KTI_ET32P2, | |
109 | CH_NetVin_NV5000SC, | |
110 | CH_Via_86C926, | |
111 | CH_SureCom_NE34, | |
112 | CH_Winbond_W89C940F, | |
113 | CH_Holtek_HT80232, | |
114 | CH_Holtek_HT80229, | |
115 | CH_Winbond_89C940_8c4a, | |
116 | }; | |
117 | ||
118 | ||
b2fd16b4 | 119 | static struct { |
1da177e4 LT |
120 | char *name; |
121 | int flags; | |
122 | } pci_clone_list[] __devinitdata = { | |
123 | {"RealTek RTL-8029", REALTEK_FDX}, | |
124 | {"Winbond 89C940", 0}, | |
125 | {"Compex RL2000", 0}, | |
126 | {"KTI ET32P2", 0}, | |
127 | {"NetVin NV5000SC", 0}, | |
128 | {"Via 86C926", ONLY_16BIT_IO}, | |
129 | {"SureCom NE34", 0}, | |
130 | {"Winbond W89C940F", 0}, | |
131 | {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX}, | |
132 | {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 }, | |
133 | {"Winbond W89C940(misprogrammed)", 0}, | |
134 | {NULL,} | |
135 | }; | |
136 | ||
137 | ||
138 | static struct pci_device_id ne2k_pci_tbl[] = { | |
139 | { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 }, | |
140 | { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 }, | |
141 | { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 }, | |
142 | { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 }, | |
143 | { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC }, | |
144 | { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 }, | |
145 | { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 }, | |
146 | { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F }, | |
147 | { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 }, | |
148 | { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 }, | |
149 | { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a }, | |
150 | { 0, } | |
151 | }; | |
152 | MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl); | |
153 | ||
154 | ||
155 | /* ---- No user-serviceable parts below ---- */ | |
156 | ||
157 | #define NE_BASE (dev->base_addr) | |
158 | #define NE_CMD 0x00 | |
159 | #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ | |
160 | #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */ | |
161 | #define NE_IO_EXTENT 0x20 | |
162 | ||
163 | #define NESM_START_PG 0x40 /* First page of TX buffer */ | |
164 | #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ | |
165 | ||
166 | ||
167 | static int ne2k_pci_open(struct net_device *dev); | |
168 | static int ne2k_pci_close(struct net_device *dev); | |
169 | ||
170 | static void ne2k_pci_reset_8390(struct net_device *dev); | |
171 | static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, | |
172 | int ring_page); | |
173 | static void ne2k_pci_block_input(struct net_device *dev, int count, | |
174 | struct sk_buff *skb, int ring_offset); | |
175 | static void ne2k_pci_block_output(struct net_device *dev, const int count, | |
176 | const unsigned char *buf, const int start_page); | |
7282d491 | 177 | static const struct ethtool_ops ne2k_pci_ethtool_ops; |
1da177e4 | 178 | |
6aa20a22 | 179 | |
1da177e4 LT |
180 | |
181 | /* There is no room in the standard 8390 structure for extra info we need, | |
182 | so we build a meta/outer-wrapper structure.. */ | |
183 | struct ne2k_pci_card { | |
184 | struct net_device *dev; | |
185 | struct pci_dev *pci_dev; | |
186 | }; | |
187 | ||
188 | ||
189 | ||
190 | /* | |
191 | NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet | |
192 | buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes | |
193 | 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be | |
194 | detected by their SA prefix. | |
195 | ||
196 | Reading the SAPROM from a word-wide card with the 8390 set in byte-wide | |
197 | mode results in doubled values, which can be detected and compensated for. | |
198 | ||
199 | The probe is also responsible for initializing the card and filling | |
200 | in the 'dev' and 'ei_status' structures. | |
201 | */ | |
202 | ||
203 | ||
204 | static int __devinit ne2k_pci_init_one (struct pci_dev *pdev, | |
205 | const struct pci_device_id *ent) | |
206 | { | |
207 | struct net_device *dev; | |
208 | int i; | |
209 | unsigned char SA_prom[32]; | |
210 | int start_page, stop_page; | |
211 | int irq, reg0, chip_idx = ent->driver_data; | |
212 | static unsigned int fnd_cnt; | |
213 | long ioaddr; | |
214 | int flags = pci_clone_list[chip_idx].flags; | |
0795af57 | 215 | DECLARE_MAC_BUF(mac); |
1da177e4 LT |
216 | |
217 | /* when built into the kernel, we only print version if device is found */ | |
218 | #ifndef MODULE | |
219 | static int printed_version; | |
220 | if (!printed_version++) | |
221 | printk(version); | |
222 | #endif | |
223 | ||
224 | fnd_cnt++; | |
225 | ||
226 | i = pci_enable_device (pdev); | |
227 | if (i) | |
228 | return i; | |
229 | ||
230 | ioaddr = pci_resource_start (pdev, 0); | |
231 | irq = pdev->irq; | |
232 | ||
233 | if (!ioaddr || ((pci_resource_flags (pdev, 0) & IORESOURCE_IO) == 0)) { | |
9b91cf9d | 234 | dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n"); |
1da177e4 LT |
235 | return -ENODEV; |
236 | } | |
237 | ||
238 | if (request_region (ioaddr, NE_IO_EXTENT, DRV_NAME) == NULL) { | |
9b91cf9d | 239 | dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n", |
1da177e4 LT |
240 | NE_IO_EXTENT, ioaddr); |
241 | return -EBUSY; | |
242 | } | |
243 | ||
244 | reg0 = inb(ioaddr); | |
245 | if (reg0 == 0xFF) | |
246 | goto err_out_free_res; | |
247 | ||
248 | /* Do a preliminary verification that we have a 8390. */ | |
249 | { | |
250 | int regd; | |
251 | outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD); | |
252 | regd = inb(ioaddr + 0x0d); | |
253 | outb(0xff, ioaddr + 0x0d); | |
254 | outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD); | |
255 | inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ | |
256 | if (inb(ioaddr + EN0_COUNTER0) != 0) { | |
257 | outb(reg0, ioaddr); | |
258 | outb(regd, ioaddr + 0x0d); /* Restore the old values. */ | |
259 | goto err_out_free_res; | |
260 | } | |
261 | } | |
262 | ||
263 | /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */ | |
264 | dev = alloc_ei_netdev(); | |
265 | if (!dev) { | |
9b91cf9d | 266 | dev_err(&pdev->dev, "cannot allocate ethernet device\n"); |
1da177e4 LT |
267 | goto err_out_free_res; |
268 | } | |
1da177e4 LT |
269 | SET_NETDEV_DEV(dev, &pdev->dev); |
270 | ||
271 | /* Reset card. Who knows what dain-bramaged state it was left in. */ | |
272 | { | |
273 | unsigned long reset_start_time = jiffies; | |
274 | ||
275 | outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); | |
276 | ||
277 | /* This looks like a horrible timing loop, but it should never take | |
278 | more than a few cycles. | |
279 | */ | |
280 | while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0) | |
281 | /* Limit wait: '2' avoids jiffy roll-over. */ | |
282 | if (jiffies - reset_start_time > 2) { | |
9b91cf9d | 283 | dev_err(&pdev->dev, |
2e8a538d | 284 | "Card failure (no reset ack).\n"); |
1da177e4 LT |
285 | goto err_out_free_netdev; |
286 | } | |
287 | ||
288 | outb(0xff, ioaddr + EN0_ISR); /* Ack all intr. */ | |
289 | } | |
290 | ||
291 | /* Read the 16 bytes of station address PROM. | |
292 | We must first initialize registers, similar to NS8390_init(eifdev, 0). | |
293 | We can't reliably read the SAPROM address without this. | |
294 | (I learned the hard way!). */ | |
295 | { | |
296 | struct {unsigned char value, offset; } program_seq[] = { | |
297 | {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ | |
298 | {0x49, EN0_DCFG}, /* Set word-wide access. */ | |
299 | {0x00, EN0_RCNTLO}, /* Clear the count regs. */ | |
300 | {0x00, EN0_RCNTHI}, | |
301 | {0x00, EN0_IMR}, /* Mask completion irq. */ | |
302 | {0xFF, EN0_ISR}, | |
303 | {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ | |
304 | {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ | |
305 | {32, EN0_RCNTLO}, | |
306 | {0x00, EN0_RCNTHI}, | |
307 | {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ | |
308 | {0x00, EN0_RSARHI}, | |
309 | {E8390_RREAD+E8390_START, E8390_CMD}, | |
310 | }; | |
ff8ac609 | 311 | for (i = 0; i < ARRAY_SIZE(program_seq); i++) |
1da177e4 LT |
312 | outb(program_seq[i].value, ioaddr + program_seq[i].offset); |
313 | ||
314 | } | |
315 | ||
316 | /* Note: all PCI cards have at least 16 bit access, so we don't have | |
317 | to check for 8 bit cards. Most cards permit 32 bit access. */ | |
318 | if (flags & ONLY_32BIT_IO) { | |
319 | for (i = 0; i < 4 ; i++) | |
320 | ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT)); | |
321 | } else | |
322 | for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++) | |
323 | SA_prom[i] = inb(ioaddr + NE_DATAPORT); | |
324 | ||
325 | /* We always set the 8390 registers for word mode. */ | |
326 | outb(0x49, ioaddr + EN0_DCFG); | |
327 | start_page = NESM_START_PG; | |
328 | ||
329 | stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG; | |
330 | ||
331 | /* Set up the rest of the parameters. */ | |
332 | dev->irq = irq; | |
333 | dev->base_addr = ioaddr; | |
334 | pci_set_drvdata(pdev, dev); | |
335 | ||
336 | ei_status.name = pci_clone_list[chip_idx].name; | |
337 | ei_status.tx_start_page = start_page; | |
338 | ei_status.stop_page = stop_page; | |
339 | ei_status.word16 = 1; | |
340 | ei_status.ne2k_flags = flags; | |
341 | if (fnd_cnt < MAX_UNITS) { | |
342 | if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX)) | |
343 | ei_status.ne2k_flags |= FORCE_FDX; | |
344 | } | |
345 | ||
346 | ei_status.rx_start_page = start_page + TX_PAGES; | |
347 | #ifdef PACKETBUF_MEMSIZE | |
348 | /* Allow the packet buffer size to be overridden by know-it-alls. */ | |
349 | ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; | |
350 | #endif | |
351 | ||
352 | ei_status.reset_8390 = &ne2k_pci_reset_8390; | |
353 | ei_status.block_input = &ne2k_pci_block_input; | |
354 | ei_status.block_output = &ne2k_pci_block_output; | |
355 | ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr; | |
356 | ei_status.priv = (unsigned long) pdev; | |
357 | dev->open = &ne2k_pci_open; | |
358 | dev->stop = &ne2k_pci_close; | |
359 | dev->ethtool_ops = &ne2k_pci_ethtool_ops; | |
360 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
361 | dev->poll_controller = ei_poll; | |
362 | #endif | |
363 | NS8390_init(dev, 0); | |
364 | ||
365 | i = register_netdev(dev); | |
366 | if (i) | |
367 | goto err_out_free_netdev; | |
368 | ||
0795af57 | 369 | for(i = 0; i < 6; i++) |
1da177e4 | 370 | dev->dev_addr[i] = SA_prom[i]; |
0795af57 JP |
371 | printk("%s: %s found at %#lx, IRQ %d, %s.\n", |
372 | dev->name, pci_clone_list[chip_idx].name, ioaddr, dev->irq, | |
373 | print_mac(mac, dev->dev_addr)); | |
374 | ||
78b34589 | 375 | memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); |
1da177e4 LT |
376 | |
377 | return 0; | |
378 | ||
379 | err_out_free_netdev: | |
380 | free_netdev (dev); | |
381 | err_out_free_res: | |
382 | release_region (ioaddr, NE_IO_EXTENT); | |
383 | pci_set_drvdata (pdev, NULL); | |
384 | return -ENODEV; | |
385 | ||
386 | } | |
387 | ||
6aa20a22 | 388 | /* |
1da177e4 LT |
389 | * Magic incantation sequence for full duplex on the supported cards. |
390 | */ | |
391 | static inline int set_realtek_fdx(struct net_device *dev) | |
392 | { | |
393 | long ioaddr = dev->base_addr; | |
394 | ||
395 | outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */ | |
396 | outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */ | |
397 | outb(0x40, ioaddr + 0x06); /* Enable full duplex */ | |
398 | outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */ | |
399 | outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */ | |
400 | return 0; | |
401 | } | |
402 | ||
403 | static inline int set_holtek_fdx(struct net_device *dev) | |
404 | { | |
405 | long ioaddr = dev->base_addr; | |
406 | ||
407 | outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20); | |
408 | return 0; | |
409 | } | |
410 | ||
411 | static int ne2k_pci_set_fdx(struct net_device *dev) | |
412 | { | |
6aa20a22 | 413 | if (ei_status.ne2k_flags & REALTEK_FDX) |
1da177e4 LT |
414 | return set_realtek_fdx(dev); |
415 | else if (ei_status.ne2k_flags & HOLTEK_FDX) | |
416 | return set_holtek_fdx(dev); | |
417 | ||
418 | return -EOPNOTSUPP; | |
419 | } | |
420 | ||
421 | static int ne2k_pci_open(struct net_device *dev) | |
422 | { | |
1fb9df5d | 423 | int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, dev->name, dev); |
1da177e4 LT |
424 | if (ret) |
425 | return ret; | |
426 | ||
427 | if (ei_status.ne2k_flags & FORCE_FDX) | |
428 | ne2k_pci_set_fdx(dev); | |
429 | ||
430 | ei_open(dev); | |
431 | return 0; | |
432 | } | |
433 | ||
434 | static int ne2k_pci_close(struct net_device *dev) | |
435 | { | |
436 | ei_close(dev); | |
437 | free_irq(dev->irq, dev); | |
438 | return 0; | |
439 | } | |
440 | ||
441 | /* Hard reset the card. This used to pause for the same period that a | |
442 | 8390 reset command required, but that shouldn't be necessary. */ | |
443 | static void ne2k_pci_reset_8390(struct net_device *dev) | |
444 | { | |
445 | unsigned long reset_start_time = jiffies; | |
446 | ||
447 | if (debug > 1) printk("%s: Resetting the 8390 t=%ld...", | |
448 | dev->name, jiffies); | |
449 | ||
450 | outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); | |
451 | ||
452 | ei_status.txing = 0; | |
453 | ei_status.dmaing = 0; | |
454 | ||
455 | /* This check _should_not_ be necessary, omit eventually. */ | |
456 | while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) | |
457 | if (jiffies - reset_start_time > 2) { | |
458 | printk("%s: ne2k_pci_reset_8390() did not complete.\n", dev->name); | |
459 | break; | |
460 | } | |
461 | outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ | |
462 | } | |
463 | ||
464 | /* Grab the 8390 specific header. Similar to the block_input routine, but | |
465 | we don't need to be concerned with ring wrap as the header will be at | |
466 | the start of a page, so we optimize accordingly. */ | |
467 | ||
468 | static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) | |
469 | { | |
470 | ||
471 | long nic_base = dev->base_addr; | |
472 | ||
473 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ | |
474 | if (ei_status.dmaing) { | |
475 | printk("%s: DMAing conflict in ne2k_pci_get_8390_hdr " | |
476 | "[DMAstat:%d][irqlock:%d].\n", | |
477 | dev->name, ei_status.dmaing, ei_status.irqlock); | |
478 | return; | |
479 | } | |
480 | ||
481 | ei_status.dmaing |= 0x01; | |
482 | outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); | |
483 | outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); | |
484 | outb(0, nic_base + EN0_RCNTHI); | |
485 | outb(0, nic_base + EN0_RSARLO); /* On page boundary */ | |
486 | outb(ring_page, nic_base + EN0_RSARHI); | |
487 | outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); | |
488 | ||
489 | if (ei_status.ne2k_flags & ONLY_16BIT_IO) { | |
490 | insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); | |
491 | } else { | |
492 | *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT)); | |
493 | le16_to_cpus(&hdr->count); | |
494 | } | |
495 | ||
496 | outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ | |
497 | ei_status.dmaing &= ~0x01; | |
498 | } | |
499 | ||
500 | /* Block input and output, similar to the Crynwr packet driver. If you | |
501 | are porting to a new ethercard, look at the packet driver source for hints. | |
502 | The NEx000 doesn't share the on-board packet memory -- you have to put | |
503 | the packet out through the "remote DMA" dataport using outb. */ | |
504 | ||
505 | static void ne2k_pci_block_input(struct net_device *dev, int count, | |
506 | struct sk_buff *skb, int ring_offset) | |
507 | { | |
508 | long nic_base = dev->base_addr; | |
509 | char *buf = skb->data; | |
510 | ||
511 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ | |
512 | if (ei_status.dmaing) { | |
513 | printk("%s: DMAing conflict in ne2k_pci_block_input " | |
514 | "[DMAstat:%d][irqlock:%d].\n", | |
515 | dev->name, ei_status.dmaing, ei_status.irqlock); | |
516 | return; | |
517 | } | |
518 | ei_status.dmaing |= 0x01; | |
519 | if (ei_status.ne2k_flags & ONLY_32BIT_IO) | |
520 | count = (count + 3) & 0xFFFC; | |
521 | outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); | |
522 | outb(count & 0xff, nic_base + EN0_RCNTLO); | |
523 | outb(count >> 8, nic_base + EN0_RCNTHI); | |
524 | outb(ring_offset & 0xff, nic_base + EN0_RSARLO); | |
525 | outb(ring_offset >> 8, nic_base + EN0_RSARHI); | |
526 | outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); | |
527 | ||
528 | if (ei_status.ne2k_flags & ONLY_16BIT_IO) { | |
529 | insw(NE_BASE + NE_DATAPORT,buf,count>>1); | |
530 | if (count & 0x01) { | |
531 | buf[count-1] = inb(NE_BASE + NE_DATAPORT); | |
532 | } | |
533 | } else { | |
534 | insl(NE_BASE + NE_DATAPORT, buf, count>>2); | |
535 | if (count & 3) { | |
536 | buf += count & ~3; | |
537 | if (count & 2) { | |
3b5e26f7 | 538 | __le16 *b = (__le16 *)buf; |
1da177e4 | 539 | |
3b5e26f7 | 540 | *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT)); |
1da177e4 LT |
541 | buf = (char *)b; |
542 | } | |
543 | if (count & 1) | |
544 | *buf = inb(NE_BASE + NE_DATAPORT); | |
545 | } | |
546 | } | |
547 | ||
548 | outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ | |
549 | ei_status.dmaing &= ~0x01; | |
550 | } | |
551 | ||
552 | static void ne2k_pci_block_output(struct net_device *dev, int count, | |
553 | const unsigned char *buf, const int start_page) | |
554 | { | |
555 | long nic_base = NE_BASE; | |
556 | unsigned long dma_start; | |
557 | ||
558 | /* On little-endian it's always safe to round the count up for | |
559 | word writes. */ | |
560 | if (ei_status.ne2k_flags & ONLY_32BIT_IO) | |
561 | count = (count + 3) & 0xFFFC; | |
562 | else | |
563 | if (count & 0x01) | |
564 | count++; | |
565 | ||
566 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ | |
567 | if (ei_status.dmaing) { | |
568 | printk("%s: DMAing conflict in ne2k_pci_block_output." | |
569 | "[DMAstat:%d][irqlock:%d]\n", | |
570 | dev->name, ei_status.dmaing, ei_status.irqlock); | |
571 | return; | |
572 | } | |
573 | ei_status.dmaing |= 0x01; | |
574 | /* We should already be in page 0, but to be safe... */ | |
575 | outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); | |
576 | ||
577 | #ifdef NE8390_RW_BUGFIX | |
578 | /* Handle the read-before-write bug the same way as the | |
579 | Crynwr packet driver -- the NatSemi method doesn't work. | |
580 | Actually this doesn't always work either, but if you have | |
581 | problems with your NEx000 this is better than nothing! */ | |
582 | outb(0x42, nic_base + EN0_RCNTLO); | |
583 | outb(0x00, nic_base + EN0_RCNTHI); | |
584 | outb(0x42, nic_base + EN0_RSARLO); | |
585 | outb(0x00, nic_base + EN0_RSARHI); | |
586 | outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); | |
587 | #endif | |
588 | outb(ENISR_RDC, nic_base + EN0_ISR); | |
589 | ||
590 | /* Now the normal output. */ | |
591 | outb(count & 0xff, nic_base + EN0_RCNTLO); | |
592 | outb(count >> 8, nic_base + EN0_RCNTHI); | |
593 | outb(0x00, nic_base + EN0_RSARLO); | |
594 | outb(start_page, nic_base + EN0_RSARHI); | |
595 | outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); | |
596 | if (ei_status.ne2k_flags & ONLY_16BIT_IO) { | |
597 | outsw(NE_BASE + NE_DATAPORT, buf, count>>1); | |
598 | } else { | |
599 | outsl(NE_BASE + NE_DATAPORT, buf, count>>2); | |
600 | if (count & 3) { | |
601 | buf += count & ~3; | |
602 | if (count & 2) { | |
3b5e26f7 | 603 | __le16 *b = (__le16 *)buf; |
1da177e4 | 604 | |
3b5e26f7 | 605 | outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT); |
1da177e4 LT |
606 | buf = (char *)b; |
607 | } | |
608 | } | |
609 | } | |
610 | ||
611 | dma_start = jiffies; | |
612 | ||
613 | while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) | |
614 | if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */ | |
615 | printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name); | |
616 | ne2k_pci_reset_8390(dev); | |
617 | NS8390_init(dev,1); | |
618 | break; | |
619 | } | |
620 | ||
621 | outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ | |
622 | ei_status.dmaing &= ~0x01; | |
623 | return; | |
624 | } | |
625 | ||
626 | static void ne2k_pci_get_drvinfo(struct net_device *dev, | |
627 | struct ethtool_drvinfo *info) | |
628 | { | |
629 | struct ei_device *ei = dev->priv; | |
630 | struct pci_dev *pci_dev = (struct pci_dev *) ei->priv; | |
631 | ||
632 | strcpy(info->driver, DRV_NAME); | |
633 | strcpy(info->version, DRV_VERSION); | |
634 | strcpy(info->bus_info, pci_name(pci_dev)); | |
635 | } | |
636 | ||
7282d491 | 637 | static const struct ethtool_ops ne2k_pci_ethtool_ops = { |
1da177e4 | 638 | .get_drvinfo = ne2k_pci_get_drvinfo, |
1da177e4 LT |
639 | }; |
640 | ||
641 | static void __devexit ne2k_pci_remove_one (struct pci_dev *pdev) | |
642 | { | |
643 | struct net_device *dev = pci_get_drvdata(pdev); | |
644 | ||
5d9428de | 645 | BUG_ON(!dev); |
1da177e4 LT |
646 | unregister_netdev(dev); |
647 | release_region(dev->base_addr, NE_IO_EXTENT); | |
648 | free_netdev(dev); | |
649 | pci_disable_device(pdev); | |
650 | pci_set_drvdata(pdev, NULL); | |
651 | } | |
652 | ||
653 | #ifdef CONFIG_PM | |
654 | static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state) | |
655 | { | |
656 | struct net_device *dev = pci_get_drvdata (pdev); | |
657 | ||
658 | netif_device_detach(dev); | |
659 | pci_save_state(pdev); | |
d58da590 | 660 | pci_disable_device(pdev); |
1da177e4 LT |
661 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
666 | static int ne2k_pci_resume (struct pci_dev *pdev) | |
667 | { | |
668 | struct net_device *dev = pci_get_drvdata (pdev); | |
cad1b9da | 669 | int rc; |
1da177e4 LT |
670 | |
671 | pci_set_power_state(pdev, 0); | |
672 | pci_restore_state(pdev); | |
cad1b9da JG |
673 | |
674 | rc = pci_enable_device(pdev); | |
675 | if (rc) | |
676 | return rc; | |
677 | ||
1da177e4 LT |
678 | NS8390_init(dev, 1); |
679 | netif_device_attach(dev); | |
680 | ||
681 | return 0; | |
682 | } | |
683 | ||
684 | #endif /* CONFIG_PM */ | |
685 | ||
686 | ||
687 | static struct pci_driver ne2k_driver = { | |
688 | .name = DRV_NAME, | |
689 | .probe = ne2k_pci_init_one, | |
690 | .remove = __devexit_p(ne2k_pci_remove_one), | |
691 | .id_table = ne2k_pci_tbl, | |
692 | #ifdef CONFIG_PM | |
693 | .suspend = ne2k_pci_suspend, | |
694 | .resume = ne2k_pci_resume, | |
695 | #endif /* CONFIG_PM */ | |
696 | ||
697 | }; | |
698 | ||
699 | ||
700 | static int __init ne2k_pci_init(void) | |
701 | { | |
702 | /* when a module, this is printed whether or not devices are found in probe */ | |
703 | #ifdef MODULE | |
704 | printk(version); | |
705 | #endif | |
29917620 | 706 | return pci_register_driver(&ne2k_driver); |
1da177e4 LT |
707 | } |
708 | ||
709 | ||
710 | static void __exit ne2k_pci_cleanup(void) | |
711 | { | |
712 | pci_unregister_driver (&ne2k_driver); | |
713 | } | |
714 | ||
715 | module_init(ne2k_pci_init); | |
716 | module_exit(ne2k_pci_cleanup); |