1 | /* $NetBSD: if_en_pci.c,v 1.37 2014/03/29 19:28:24 christos Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1996 Charles D. Cranor and Washington University. |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | */ |
27 | |
28 | /* |
29 | * |
30 | * i f _ e n _ p c i . c |
31 | * |
32 | * author: Chuck Cranor <chuck@netbsd> |
33 | * started: spring, 1996. |
34 | * |
35 | * PCI glue for the eni155p card. |
36 | */ |
37 | |
38 | #include <sys/cdefs.h> |
39 | __KERNEL_RCSID(0, "$NetBSD: if_en_pci.c,v 1.37 2014/03/29 19:28:24 christos Exp $" ); |
40 | |
41 | #include <sys/param.h> |
42 | #include <sys/systm.h> |
43 | #include <sys/device.h> |
44 | #include <sys/mbuf.h> |
45 | #include <sys/socket.h> |
46 | #include <sys/socketvar.h> |
47 | |
48 | #include <net/if.h> |
49 | |
50 | #include <dev/pci/pcivar.h> |
51 | #include <dev/pci/pcireg.h> |
52 | #include <dev/pci/pcidevs.h> |
53 | |
54 | #include <dev/ic/midwayreg.h> |
55 | #include <dev/ic/midwayvar.h> |
56 | |
57 | |
58 | /* |
59 | * local structures |
60 | */ |
61 | |
62 | struct en_pci_softc { |
63 | /* bus independent stuff */ |
64 | struct en_softc esc; |
65 | |
66 | /* PCI bus glue */ |
67 | void *sc_ih; /* interrupt handle */ |
68 | pci_chipset_tag_t en_pc; /* for PCI calls */ |
69 | |
70 | }; |
71 | |
72 | /* |
73 | * local defines (PCI specific stuff) |
74 | */ |
75 | |
76 | #if !defined(MIDWAY_ENIONLY) |
77 | static void eni_get_macaddr(struct en_pci_softc *, struct pci_attach_args *); |
78 | #endif |
79 | #if !defined(MIDWAY_ADPONLY) |
80 | static void adp_get_macaddr(struct en_pci_softc *, struct pci_attach_args *); |
81 | #endif |
82 | |
83 | /* |
84 | * address of config base memory address register in PCI config space |
85 | * (this is card specific) |
86 | */ |
87 | |
88 | #define PCI_CBMA PCI_BAR(0) |
89 | |
90 | /* |
91 | * tonga (pci bridge). ENI cards only! |
92 | */ |
93 | |
94 | #define EN_TONGA 0x60 /* PCI config addr of tonga reg */ |
95 | |
96 | #define TONGA_SWAP_DMA 0x80 /* endian swap control */ |
97 | #define TONGA_SWAP_BYTE 0x40 |
98 | #define TONGA_SWAP_WORD 0x20 |
99 | |
100 | /* |
101 | * adaptec pci bridge. ADP cards only! |
102 | */ |
103 | |
104 | #define ADP_PCIREG 0x050040 /* PCI control register */ |
105 | |
106 | #define ADP_PCIREG_RESET 0x1 /* reset card */ |
107 | #define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */ |
108 | #define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */ |
109 | #define ADP_PCIREG_SWAP_DMA 0x8 /* swap bytes on DMA */ |
110 | |
111 | /* |
112 | * prototypes |
113 | */ |
114 | |
115 | static int en_pci_match(device_t, cfdata_t, void *); |
116 | static void en_pci_attach(device_t, device_t, void *); |
117 | |
118 | /* |
119 | * PCI autoconfig attachments |
120 | */ |
121 | |
122 | CFATTACH_DECL_NEW(en_pci, sizeof(struct en_pci_softc), |
123 | en_pci_match, en_pci_attach, NULL, NULL); |
124 | |
125 | #if !defined(MIDWAY_ENIONLY) |
126 | |
127 | static void adp_busreset(void *); |
128 | |
129 | /* |
130 | * bus specific reset function [ADP only!] |
131 | */ |
132 | |
133 | static void adp_busreset(void *v) |
134 | { |
135 | struct en_softc *sc = (struct en_softc *) v; |
136 | u_int32_t dummy; |
137 | |
138 | bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET); |
139 | DELAY(1000); /* let it reset */ |
140 | dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); |
141 | bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, |
142 | (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE)); |
143 | dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); |
144 | if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) != |
145 | (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) |
146 | printf("adp_busreset: Adaptec ATM did NOT reset!\n" ); |
147 | |
148 | } |
149 | #endif |
150 | |
151 | /***********************************************************************/ |
152 | |
153 | /* |
154 | * autoconfig stuff |
155 | */ |
156 | |
157 | static int |
158 | en_pci_match(device_t parent, cfdata_t match, void *aux) |
159 | { |
160 | struct pci_attach_args *pa = (struct pci_attach_args *) aux; |
161 | |
162 | #if !defined(MIDWAY_ADPONLY) |
163 | if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_EFFICIENTNETS && |
164 | (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF || |
165 | PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA)) |
166 | return 1; |
167 | #endif |
168 | |
169 | #if !defined(MIDWAY_ENIONLY) |
170 | if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP && |
171 | (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5900 || |
172 | PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5905)) |
173 | return 1; |
174 | #endif |
175 | |
176 | return 0; |
177 | } |
178 | |
179 | |
180 | static void |
181 | en_pci_attach(device_t parent, device_t self, void *aux) |
182 | { |
183 | struct en_pci_softc *scp = device_private(self); |
184 | struct en_softc *sc = &scp->esc; |
185 | struct pci_attach_args *pa = aux; |
186 | pci_intr_handle_t ih; |
187 | const char *intrstr; |
188 | int retval; |
189 | char intrbuf[PCI_INTRSTR_LEN]; |
190 | |
191 | sc->sc_dev = self; |
192 | |
193 | aprint_naive(": ATM controller\n" ); |
194 | aprint_normal("\n" ); |
195 | |
196 | sc->is_adaptec = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP) ? 1 : 0; |
197 | scp->en_pc = pa->pa_pc; |
198 | |
199 | /* |
200 | * make sure bus mastering is enabled |
201 | */ |
202 | pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, |
203 | pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | |
204 | PCI_COMMAND_MASTER_ENABLE); |
205 | |
206 | /* |
207 | * interrupt map |
208 | */ |
209 | |
210 | if (pci_intr_map(pa, &ih)) { |
211 | aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n" ); |
212 | return; |
213 | } |
214 | intrstr = pci_intr_string(scp->en_pc, ih, intrbuf, sizeof(intrbuf)); |
215 | scp->sc_ih = pci_intr_establish(scp->en_pc, ih, IPL_NET, en_intr, sc); |
216 | if (scp->sc_ih == NULL) { |
217 | aprint_error_dev(sc->sc_dev, "couldn't establish interrupt\n" ); |
218 | if (intrstr != NULL) |
219 | aprint_error(" at %s" , intrstr); |
220 | aprint_error("\n" ); |
221 | return; |
222 | } |
223 | aprint_normal_dev(sc->sc_dev, "interrupting at %s\n" , intrstr); |
224 | sc->ipl = 1; /* XXX */ |
225 | |
226 | /* |
227 | * memory map |
228 | */ |
229 | |
230 | retval = pci_mapreg_map(pa, PCI_CBMA, |
231 | PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, |
232 | &sc->en_memt, &sc->en_base, NULL, &sc->en_obmemsz); |
233 | if (retval) { |
234 | aprint_error_dev(sc->sc_dev, "couldn't map memory\n" ); |
235 | return; |
236 | } |
237 | |
238 | /* |
239 | * set up pci bridge |
240 | */ |
241 | |
242 | #if !defined(MIDWAY_ENIONLY) |
243 | if (sc->is_adaptec) { |
244 | adp_get_macaddr(scp, pa); |
245 | sc->en_busreset = adp_busreset; |
246 | adp_busreset(sc); |
247 | } |
248 | #endif |
249 | |
250 | #if !defined(MIDWAY_ADPONLY) |
251 | if (!sc->is_adaptec) { |
252 | eni_get_macaddr(scp, pa); |
253 | sc->en_busreset = NULL; |
254 | pci_conf_write(scp->en_pc, pa->pa_tag, EN_TONGA, |
255 | (TONGA_SWAP_DMA|TONGA_SWAP_WORD)); |
256 | } |
257 | #endif |
258 | |
259 | /* |
260 | * done PCI specific stuff |
261 | */ |
262 | |
263 | en_attach(sc); |
264 | |
265 | } |
266 | |
267 | #if 0 |
268 | static void |
269 | en_pci_shutdown( |
270 | int howto, |
271 | void *sc) |
272 | { |
273 | struct en_pci_softc *psc = (struct en_pci_softc *)sc; |
274 | |
275 | en_reset(&psc->esc); |
276 | DELAY(10); |
277 | } |
278 | #endif |
279 | |
280 | #if !defined(MIDWAY_ENIONLY) |
281 | |
282 | #if defined(__FreeBSD__) |
283 | #define bus_space_read_1(t, h, o) \ |
284 | ((void)t, (*(volatile u_int8_t *)((h) + (o)))) |
285 | #endif |
286 | |
287 | static void |
288 | adp_get_macaddr(struct en_pci_softc *scp, struct pci_attach_args *pa) |
289 | { |
290 | struct en_softc * sc = (struct en_softc *)scp; |
291 | int lcv; |
292 | |
293 | for (lcv = 0; lcv < sizeof(sc->macaddr); lcv++) |
294 | sc->macaddr[lcv] = bus_space_read_1(sc->en_memt, sc->en_base, |
295 | MID_ADPMACOFF + lcv); |
296 | } |
297 | |
298 | #endif /* MIDWAY_ENIONLY */ |
299 | |
300 | #if !defined(MIDWAY_ADPONLY) |
301 | |
302 | /* |
303 | * Read station (MAC) address from serial EEPROM. |
304 | * derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC. |
305 | */ |
306 | #define EN_PROM_MAGIC 0x0c |
307 | #define EN_PROM_DATA 0x02 |
308 | #define EN_PROM_CLK 0x01 |
309 | #define EN_ESI 64 |
310 | |
311 | static void |
312 | eni_get_macaddr(struct en_pci_softc *scp, struct pci_attach_args *pa) |
313 | { |
314 | struct en_softc *sc = (struct en_softc *)scp; |
315 | pci_chipset_tag_t id = scp->en_pc; |
316 | pcitag_t tag = pa->pa_tag; |
317 | int i, j, address; |
318 | u_int32_t data, t_data; |
319 | u_int8_t tmp; |
320 | |
321 | t_data = pci_conf_read(id, tag, EN_TONGA) & 0xffffff00; |
322 | |
323 | data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK; |
324 | pci_conf_write(id, tag, EN_TONGA, data); |
325 | |
326 | for (i = 0; i < sizeof(sc->macaddr); i ++){ |
327 | /* start operation */ |
328 | data |= EN_PROM_DATA ; |
329 | pci_conf_write(id, tag, EN_TONGA, data); |
330 | data |= EN_PROM_CLK ; |
331 | pci_conf_write(id, tag, EN_TONGA, data); |
332 | data &= ~EN_PROM_DATA ; |
333 | pci_conf_write(id, tag, EN_TONGA, data); |
334 | data &= ~EN_PROM_CLK ; |
335 | pci_conf_write(id, tag, EN_TONGA, data); |
336 | /* send address with serial line */ |
337 | address = ((i + EN_ESI) << 1) + 1; |
338 | for ( j = 7 ; j >= 0 ; j --){ |
339 | data = (address >> j) & 1 ? data | EN_PROM_DATA : |
340 | data & ~EN_PROM_DATA; |
341 | pci_conf_write(id, tag, EN_TONGA, data); |
342 | data |= EN_PROM_CLK ; |
343 | pci_conf_write(id, tag, EN_TONGA, data); |
344 | data &= ~EN_PROM_CLK ; |
345 | pci_conf_write(id, tag, EN_TONGA, data); |
346 | } |
347 | /* get ack */ |
348 | data |= EN_PROM_DATA ; |
349 | pci_conf_write(id, tag, EN_TONGA, data); |
350 | data |= EN_PROM_CLK ; |
351 | pci_conf_write(id, tag, EN_TONGA, data); |
352 | data = pci_conf_read(id, tag, EN_TONGA); |
353 | data &= ~EN_PROM_CLK ; |
354 | pci_conf_write(id, tag, EN_TONGA, data); |
355 | data |= EN_PROM_DATA ; |
356 | pci_conf_write(id, tag, EN_TONGA, data); |
357 | |
358 | tmp = 0; |
359 | |
360 | for ( j = 7 ; j >= 0 ; j --){ |
361 | tmp <<= 1; |
362 | data |= EN_PROM_DATA ; |
363 | pci_conf_write(id, tag, EN_TONGA, data); |
364 | data |= EN_PROM_CLK ; |
365 | pci_conf_write(id, tag, EN_TONGA, data); |
366 | data = pci_conf_read(id, tag, EN_TONGA); |
367 | if(data & EN_PROM_DATA) tmp |= 1; |
368 | data &= ~EN_PROM_CLK ; |
369 | pci_conf_write(id, tag, EN_TONGA, data); |
370 | data |= EN_PROM_DATA ; |
371 | pci_conf_write(id, tag, EN_TONGA, data); |
372 | } |
373 | /* get ack */ |
374 | data |= EN_PROM_DATA ; |
375 | pci_conf_write(id, tag, EN_TONGA, data); |
376 | data |= EN_PROM_CLK ; |
377 | pci_conf_write(id, tag, EN_TONGA, data); |
378 | data = pci_conf_read(id, tag, EN_TONGA); |
379 | data &= ~EN_PROM_CLK ; |
380 | pci_conf_write(id, tag, EN_TONGA, data); |
381 | data |= EN_PROM_DATA ; |
382 | pci_conf_write(id, tag, EN_TONGA, data); |
383 | |
384 | sc->macaddr[i] = tmp; |
385 | } |
386 | /* stop operation */ |
387 | data &= ~EN_PROM_DATA; |
388 | pci_conf_write(id, tag, EN_TONGA, data); |
389 | data |= EN_PROM_CLK; |
390 | pci_conf_write(id, tag, EN_TONGA, data); |
391 | data |= EN_PROM_DATA; |
392 | pci_conf_write(id, tag, EN_TONGA, data); |
393 | pci_conf_write(id, tag, EN_TONGA, t_data); |
394 | } |
395 | |
396 | #endif /* !MIDWAY_ADPONLY */ |
397 | |