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Merge tag 'v3.3.3' into 3.3/master
[zen-stable.git] / drivers / ssb / pci.c
blob973223f5de8ebbeee690da524d0cf94c2593ce85
1 /*
2 * Sonics Silicon Backplane PCI-Hostbus related functions.
3 *
4 * Copyright (C) 2005-2006 Michael Buesch <m@bues.ch>
5 * Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
6 * Copyright (C) 2005 Stefano Brivio <st3@riseup.net>
7 * Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
8 * Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
9 *
10 * Derived from the Broadcom 4400 device driver.
11 * Copyright (C) 2002 David S. Miller (davem@redhat.com)
12 * Fixed by Pekka Pietikainen (pp@ee.oulu.fi)
13 * Copyright (C) 2006 Broadcom Corporation.
14 *
15 * Licensed under the GNU/GPL. See COPYING for details.
16 */
17
18 #include <linux/ssb/ssb.h>
19 #include <linux/ssb/ssb_regs.h>
20 #include <linux/slab.h>
21 #include <linux/pci.h>
22 #include <linux/delay.h>
23
24 #include "ssb_private.h"
25
26
27 /* Define the following to 1 to enable a printk on each coreswitch. */
28 #define SSB_VERBOSE_PCICORESWITCH_DEBUG 0
29
30
31 /* Lowlevel coreswitching */
32 int ssb_pci_switch_coreidx(struct ssb_bus *bus, u8 coreidx)
33 {
34 int err;
35 int attempts = 0;
36 u32 cur_core;
37
38 while (1) {
39 err = pci_write_config_dword(bus->host_pci, SSB_BAR0_WIN,
40 (coreidx * SSB_CORE_SIZE)
41 + SSB_ENUM_BASE);
42 if (err)
43 goto error;
44 err = pci_read_config_dword(bus->host_pci, SSB_BAR0_WIN,
45 &cur_core);
46 if (err)
47 goto error;
48 cur_core = (cur_core - SSB_ENUM_BASE)
49 / SSB_CORE_SIZE;
50 if (cur_core == coreidx)
51 break;
52
53 if (attempts++ > SSB_BAR0_MAX_RETRIES)
54 goto error;
55 udelay(10);
56 }
57 return 0;
58 error:
59 ssb_printk(KERN_ERR PFX "Failed to switch to core %u\n", coreidx);
60 return -ENODEV;
61 }
62
63 int ssb_pci_switch_core(struct ssb_bus *bus,
64 struct ssb_device *dev)
65 {
66 int err;
67 unsigned long flags;
68
69 #if SSB_VERBOSE_PCICORESWITCH_DEBUG
70 ssb_printk(KERN_INFO PFX
71 "Switching to %s core, index %d\n",
72 ssb_core_name(dev->id.coreid),
73 dev->core_index);
74 #endif
75
76 spin_lock_irqsave(&bus->bar_lock, flags);
77 err = ssb_pci_switch_coreidx(bus, dev->core_index);
78 if (!err)
79 bus->mapped_device = dev;
80 spin_unlock_irqrestore(&bus->bar_lock, flags);
81
82 return err;
83 }
84
85 /* Enable/disable the on board crystal oscillator and/or PLL. */
86 int ssb_pci_xtal(struct ssb_bus *bus, u32 what, int turn_on)
87 {
88 int err;
89 u32 in, out, outenable;
90 u16 pci_status;
91
92 if (bus->bustype != SSB_BUSTYPE_PCI)
93 return 0;
94
95 err = pci_read_config_dword(bus->host_pci, SSB_GPIO_IN, &in);
96 if (err)
97 goto err_pci;
98 err = pci_read_config_dword(bus->host_pci, SSB_GPIO_OUT, &out);
99 if (err)
100 goto err_pci;
101 err = pci_read_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE, &outenable);
102 if (err)
103 goto err_pci;
104
105 outenable |= what;
106
107 if (turn_on) {
108 /* Avoid glitching the clock if GPRS is already using it.
109 * We can't actually read the state of the PLLPD so we infer it
110 * by the value of XTAL_PU which *is* readable via gpioin.
111 */
112 if (!(in & SSB_GPIO_XTAL)) {
113 if (what & SSB_GPIO_XTAL) {
114 /* Turn the crystal on */
115 out |= SSB_GPIO_XTAL;
116 if (what & SSB_GPIO_PLL)
117 out |= SSB_GPIO_PLL;
118 err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out);
119 if (err)
120 goto err_pci;
121 err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE,
122 outenable);
123 if (err)
124 goto err_pci;
125 msleep(1);
126 }
127 if (what & SSB_GPIO_PLL) {
128 /* Turn the PLL on */
129 out &= ~SSB_GPIO_PLL;
130 err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out);
131 if (err)
132 goto err_pci;
133 msleep(5);
134 }
135 }
136
137 err = pci_read_config_word(bus->host_pci, PCI_STATUS, &pci_status);
138 if (err)
139 goto err_pci;
140 pci_status &= ~PCI_STATUS_SIG_TARGET_ABORT;
141 err = pci_write_config_word(bus->host_pci, PCI_STATUS, pci_status);
142 if (err)
143 goto err_pci;
144 } else {
145 if (what & SSB_GPIO_XTAL) {
146 /* Turn the crystal off */
147 out &= ~SSB_GPIO_XTAL;
148 }
149 if (what & SSB_GPIO_PLL) {
150 /* Turn the PLL off */
151 out |= SSB_GPIO_PLL;
152 }
153 err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out);
154 if (err)
155 goto err_pci;
156 err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE, outenable);
157 if (err)
158 goto err_pci;
159 }
160
161 out:
162 return err;
163
164 err_pci:
165 printk(KERN_ERR PFX "Error: ssb_pci_xtal() could not access PCI config space!\n");
166 err = -EBUSY;
167 goto out;
168 }
169
170 /* Get the word-offset for a SSB_SPROM_XXX define. */
171 #define SPOFF(offset) ((offset) / sizeof(u16))
172 /* Helper to extract some _offset, which is one of the SSB_SPROM_XXX defines. */
173 #define SPEX16(_outvar, _offset, _mask, _shift) \
174 out->_outvar = ((in[SPOFF(_offset)] & (_mask)) >> (_shift))
175 #define SPEX32(_outvar, _offset, _mask, _shift) \
176 out->_outvar = ((((u32)in[SPOFF((_offset)+2)] << 16 | \
177 in[SPOFF(_offset)]) & (_mask)) >> (_shift))
178 #define SPEX(_outvar, _offset, _mask, _shift) \
179 SPEX16(_outvar, _offset, _mask, _shift)
180
181
182 static inline u8 ssb_crc8(u8 crc, u8 data)
183 {
184 /* Polynomial: x^8 + x^7 + x^6 + x^4 + x^2 + 1 */
185 static const u8 t[] = {
186 0x00, 0xF7, 0xB9, 0x4E, 0x25, 0xD2, 0x9C, 0x6B,
187 0x4A, 0xBD, 0xF3, 0x04, 0x6F, 0x98, 0xD6, 0x21,
188 0x94, 0x63, 0x2D, 0xDA, 0xB1, 0x46, 0x08, 0xFF,
189 0xDE, 0x29, 0x67, 0x90, 0xFB, 0x0C, 0x42, 0xB5,
190 0x7F, 0x88, 0xC6, 0x31, 0x5A, 0xAD, 0xE3, 0x14,
191 0x35, 0xC2, 0x8C, 0x7B, 0x10, 0xE7, 0xA9, 0x5E,
192 0xEB, 0x1C, 0x52, 0xA5, 0xCE, 0x39, 0x77, 0x80,
193 0xA1, 0x56, 0x18, 0xEF, 0x84, 0x73, 0x3D, 0xCA,
194 0xFE, 0x09, 0x47, 0xB0, 0xDB, 0x2C, 0x62, 0x95,
195 0xB4, 0x43, 0x0D, 0xFA, 0x91, 0x66, 0x28, 0xDF,
196 0x6A, 0x9D, 0xD3, 0x24, 0x4F, 0xB8, 0xF6, 0x01,
197 0x20, 0xD7, 0x99, 0x6E, 0x05, 0xF2, 0xBC, 0x4B,
198 0x81, 0x76, 0x38, 0xCF, 0xA4, 0x53, 0x1D, 0xEA,
199 0xCB, 0x3C, 0x72, 0x85, 0xEE, 0x19, 0x57, 0xA0,
200 0x15, 0xE2, 0xAC, 0x5B, 0x30, 0xC7, 0x89, 0x7E,
201 0x5F, 0xA8, 0xE6, 0x11, 0x7A, 0x8D, 0xC3, 0x34,
202 0xAB, 0x5C, 0x12, 0xE5, 0x8E, 0x79, 0x37, 0xC0,
203 0xE1, 0x16, 0x58, 0xAF, 0xC4, 0x33, 0x7D, 0x8A,
204 0x3F, 0xC8, 0x86, 0x71, 0x1A, 0xED, 0xA3, 0x54,
205 0x75, 0x82, 0xCC, 0x3B, 0x50, 0xA7, 0xE9, 0x1E,
206 0xD4, 0x23, 0x6D, 0x9A, 0xF1, 0x06, 0x48, 0xBF,
207 0x9E, 0x69, 0x27, 0xD0, 0xBB, 0x4C, 0x02, 0xF5,
208 0x40, 0xB7, 0xF9, 0x0E, 0x65, 0x92, 0xDC, 0x2B,
209 0x0A, 0xFD, 0xB3, 0x44, 0x2F, 0xD8, 0x96, 0x61,
210 0x55, 0xA2, 0xEC, 0x1B, 0x70, 0x87, 0xC9, 0x3E,
211 0x1F, 0xE8, 0xA6, 0x51, 0x3A, 0xCD, 0x83, 0x74,
212 0xC1, 0x36, 0x78, 0x8F, 0xE4, 0x13, 0x5D, 0xAA,
213 0x8B, 0x7C, 0x32, 0xC5, 0xAE, 0x59, 0x17, 0xE0,
214 0x2A, 0xDD, 0x93, 0x64, 0x0F, 0xF8, 0xB6, 0x41,
215 0x60, 0x97, 0xD9, 0x2E, 0x45, 0xB2, 0xFC, 0x0B,
216 0xBE, 0x49, 0x07, 0xF0, 0x9B, 0x6C, 0x22, 0xD5,
217 0xF4, 0x03, 0x4D, 0xBA, 0xD1, 0x26, 0x68, 0x9F,
218 };
219 return t[crc ^ data];
220 }
221
222 static u8 ssb_sprom_crc(const u16 *sprom, u16 size)
223 {
224 int word;
225 u8 crc = 0xFF;
226
227 for (word = 0; word < size - 1; word++) {
228 crc = ssb_crc8(crc, sprom[word] & 0x00FF);
229 crc = ssb_crc8(crc, (sprom[word] & 0xFF00) >> 8);
230 }
231 crc = ssb_crc8(crc, sprom[size - 1] & 0x00FF);
232 crc ^= 0xFF;
233
234 return crc;
235 }
236
237 static int sprom_check_crc(const u16 *sprom, size_t size)
238 {
239 u8 crc;
240 u8 expected_crc;
241 u16 tmp;
242
243 crc = ssb_sprom_crc(sprom, size);
244 tmp = sprom[size - 1] & SSB_SPROM_REVISION_CRC;
245 expected_crc = tmp >> SSB_SPROM_REVISION_CRC_SHIFT;
246 if (crc != expected_crc)
247 return -EPROTO;
248
249 return 0;
250 }
251
252 static int sprom_do_read(struct ssb_bus *bus, u16 *sprom)
253 {
254 int i;
255
256 for (i = 0; i < bus->sprom_size; i++)
257 sprom[i] = ioread16(bus->mmio + bus->sprom_offset + (i * 2));
258
259 return 0;
260 }
261
262 static int sprom_do_write(struct ssb_bus *bus, const u16 *sprom)
263 {
264 struct pci_dev *pdev = bus->host_pci;
265 int i, err;
266 u32 spromctl;
267 u16 size = bus->sprom_size;
268
269 ssb_printk(KERN_NOTICE PFX "Writing SPROM. Do NOT turn off the power! Please stand by...\n");
270 err = pci_read_config_dword(pdev, SSB_SPROMCTL, &spromctl);
271 if (err)
272 goto err_ctlreg;
273 spromctl |= SSB_SPROMCTL_WE;
274 err = pci_write_config_dword(pdev, SSB_SPROMCTL, spromctl);
275 if (err)
276 goto err_ctlreg;
277 ssb_printk(KERN_NOTICE PFX "[ 0%%");
278 msleep(500);
279 for (i = 0; i < size; i++) {
280 if (i == size / 4)
281 ssb_printk("25%%");
282 else if (i == size / 2)
283 ssb_printk("50%%");
284 else if (i == (size * 3) / 4)
285 ssb_printk("75%%");
286 else if (i % 2)
287 ssb_printk(".");
288 writew(sprom[i], bus->mmio + bus->sprom_offset + (i * 2));
289 mmiowb();
290 msleep(20);
291 }
292 err = pci_read_config_dword(pdev, SSB_SPROMCTL, &spromctl);
293 if (err)
294 goto err_ctlreg;
295 spromctl &= ~SSB_SPROMCTL_WE;
296 err = pci_write_config_dword(pdev, SSB_SPROMCTL, spromctl);
297 if (err)
298 goto err_ctlreg;
299 msleep(500);
300 ssb_printk("100%% ]\n");
301 ssb_printk(KERN_NOTICE PFX "SPROM written.\n");
302
303 return 0;
304 err_ctlreg:
305 ssb_printk(KERN_ERR PFX "Could not access SPROM control register.\n");
306 return err;
307 }
308
309 static s8 r123_extract_antgain(u8 sprom_revision, const u16 *in,
310 u16 mask, u16 shift)
311 {
312 u16 v;
313 u8 gain;
314
315 v = in[SPOFF(SSB_SPROM1_AGAIN)];
316 gain = (v & mask) >> shift;
317 if (gain == 0xFF)
318 gain = 2; /* If unset use 2dBm */
319 if (sprom_revision == 1) {
320 /* Convert to Q5.2 */
321 gain <<= 2;
322 } else {
323 /* Q5.2 Fractional part is stored in 0xC0 */
324 gain = ((gain & 0xC0) >> 6) | ((gain & 0x3F) << 2);
325 }
326
327 return (s8)gain;
328 }
329
330 static void sprom_extract_r123(struct ssb_sprom *out, const u16 *in)
331 {
332 int i;
333 u16 v;
334 s8 gain;
335 u16 loc[3];
336
337 if (out->revision == 3) /* rev 3 moved MAC */
338 loc[0] = SSB_SPROM3_IL0MAC;
339 else {
340 loc[0] = SSB_SPROM1_IL0MAC;
341 loc[1] = SSB_SPROM1_ET0MAC;
342 loc[2] = SSB_SPROM1_ET1MAC;
343 }
344 for (i = 0; i < 3; i++) {
345 v = in[SPOFF(loc[0]) + i];
346 *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
347 }
348 if (out->revision < 3) { /* only rev 1-2 have et0, et1 */
349 for (i = 0; i < 3; i++) {
350 v = in[SPOFF(loc[1]) + i];
351 *(((__be16 *)out->et0mac) + i) = cpu_to_be16(v);
352 }
353 for (i = 0; i < 3; i++) {
354 v = in[SPOFF(loc[2]) + i];
355 *(((__be16 *)out->et1mac) + i) = cpu_to_be16(v);
356 }
357 }
358 SPEX(et0phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0A, 0);
359 SPEX(et1phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1A,
360 SSB_SPROM1_ETHPHY_ET1A_SHIFT);
361 SPEX(et0mdcport, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0M, 14);
362 SPEX(et1mdcport, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1M, 15);
363 SPEX(board_rev, SSB_SPROM1_BINF, SSB_SPROM1_BINF_BREV, 0);
364 SPEX(country_code, SSB_SPROM1_BINF, SSB_SPROM1_BINF_CCODE,
365 SSB_SPROM1_BINF_CCODE_SHIFT);
366 SPEX(ant_available_a, SSB_SPROM1_BINF, SSB_SPROM1_BINF_ANTA,
367 SSB_SPROM1_BINF_ANTA_SHIFT);
368 SPEX(ant_available_bg, SSB_SPROM1_BINF, SSB_SPROM1_BINF_ANTBG,
369 SSB_SPROM1_BINF_ANTBG_SHIFT);
370 SPEX(pa0b0, SSB_SPROM1_PA0B0, 0xFFFF, 0);
371 SPEX(pa0b1, SSB_SPROM1_PA0B1, 0xFFFF, 0);
372 SPEX(pa0b2, SSB_SPROM1_PA0B2, 0xFFFF, 0);
373 SPEX(pa1b0, SSB_SPROM1_PA1B0, 0xFFFF, 0);
374 SPEX(pa1b1, SSB_SPROM1_PA1B1, 0xFFFF, 0);
375 SPEX(pa1b2, SSB_SPROM1_PA1B2, 0xFFFF, 0);
376 SPEX(gpio0, SSB_SPROM1_GPIOA, SSB_SPROM1_GPIOA_P0, 0);
377 SPEX(gpio1, SSB_SPROM1_GPIOA, SSB_SPROM1_GPIOA_P1,
378 SSB_SPROM1_GPIOA_P1_SHIFT);
379 SPEX(gpio2, SSB_SPROM1_GPIOB, SSB_SPROM1_GPIOB_P2, 0);
380 SPEX(gpio3, SSB_SPROM1_GPIOB, SSB_SPROM1_GPIOB_P3,
381 SSB_SPROM1_GPIOB_P3_SHIFT);
382 SPEX(maxpwr_a, SSB_SPROM1_MAXPWR, SSB_SPROM1_MAXPWR_A,
383 SSB_SPROM1_MAXPWR_A_SHIFT);
384 SPEX(maxpwr_bg, SSB_SPROM1_MAXPWR, SSB_SPROM1_MAXPWR_BG, 0);
385 SPEX(itssi_a, SSB_SPROM1_ITSSI, SSB_SPROM1_ITSSI_A,
386 SSB_SPROM1_ITSSI_A_SHIFT);
387 SPEX(itssi_bg, SSB_SPROM1_ITSSI, SSB_SPROM1_ITSSI_BG, 0);
388 SPEX(boardflags_lo, SSB_SPROM1_BFLLO, 0xFFFF, 0);
389 if (out->revision >= 2)
390 SPEX(boardflags_hi, SSB_SPROM2_BFLHI, 0xFFFF, 0);
391
392 /* Extract the antenna gain values. */
393 gain = r123_extract_antgain(out->revision, in,
394 SSB_SPROM1_AGAIN_BG,
395 SSB_SPROM1_AGAIN_BG_SHIFT);
396 out->antenna_gain.ghz24.a0 = gain;
397 out->antenna_gain.ghz24.a1 = gain;
398 out->antenna_gain.ghz24.a2 = gain;
399 out->antenna_gain.ghz24.a3 = gain;
400 gain = r123_extract_antgain(out->revision, in,
401 SSB_SPROM1_AGAIN_A,
402 SSB_SPROM1_AGAIN_A_SHIFT);
403 out->antenna_gain.ghz5.a0 = gain;
404 out->antenna_gain.ghz5.a1 = gain;
405 out->antenna_gain.ghz5.a2 = gain;
406 out->antenna_gain.ghz5.a3 = gain;
407 }
408
409 /* Revs 4 5 and 8 have partially shared layout */
410 static void sprom_extract_r458(struct ssb_sprom *out, const u16 *in)
411 {
412 SPEX(txpid2g[0], SSB_SPROM4_TXPID2G01,
413 SSB_SPROM4_TXPID2G0, SSB_SPROM4_TXPID2G0_SHIFT);
414 SPEX(txpid2g[1], SSB_SPROM4_TXPID2G01,
415 SSB_SPROM4_TXPID2G1, SSB_SPROM4_TXPID2G1_SHIFT);
416 SPEX(txpid2g[2], SSB_SPROM4_TXPID2G23,
417 SSB_SPROM4_TXPID2G2, SSB_SPROM4_TXPID2G2_SHIFT);
418 SPEX(txpid2g[3], SSB_SPROM4_TXPID2G23,
419 SSB_SPROM4_TXPID2G3, SSB_SPROM4_TXPID2G3_SHIFT);
420
421 SPEX(txpid5gl[0], SSB_SPROM4_TXPID5GL01,
422 SSB_SPROM4_TXPID5GL0, SSB_SPROM4_TXPID5GL0_SHIFT);
423 SPEX(txpid5gl[1], SSB_SPROM4_TXPID5GL01,
424 SSB_SPROM4_TXPID5GL1, SSB_SPROM4_TXPID5GL1_SHIFT);
425 SPEX(txpid5gl[2], SSB_SPROM4_TXPID5GL23,
426 SSB_SPROM4_TXPID5GL2, SSB_SPROM4_TXPID5GL2_SHIFT);
427 SPEX(txpid5gl[3], SSB_SPROM4_TXPID5GL23,
428 SSB_SPROM4_TXPID5GL3, SSB_SPROM4_TXPID5GL3_SHIFT);
429
430 SPEX(txpid5g[0], SSB_SPROM4_TXPID5G01,
431 SSB_SPROM4_TXPID5G0, SSB_SPROM4_TXPID5G0_SHIFT);
432 SPEX(txpid5g[1], SSB_SPROM4_TXPID5G01,
433 SSB_SPROM4_TXPID5G1, SSB_SPROM4_TXPID5G1_SHIFT);
434 SPEX(txpid5g[2], SSB_SPROM4_TXPID5G23,
435 SSB_SPROM4_TXPID5G2, SSB_SPROM4_TXPID5G2_SHIFT);
436 SPEX(txpid5g[3], SSB_SPROM4_TXPID5G23,
437 SSB_SPROM4_TXPID5G3, SSB_SPROM4_TXPID5G3_SHIFT);
438
439 SPEX(txpid5gh[0], SSB_SPROM4_TXPID5GH01,
440 SSB_SPROM4_TXPID5GH0, SSB_SPROM4_TXPID5GH0_SHIFT);
441 SPEX(txpid5gh[1], SSB_SPROM4_TXPID5GH01,
442 SSB_SPROM4_TXPID5GH1, SSB_SPROM4_TXPID5GH1_SHIFT);
443 SPEX(txpid5gh[2], SSB_SPROM4_TXPID5GH23,
444 SSB_SPROM4_TXPID5GH2, SSB_SPROM4_TXPID5GH2_SHIFT);
445 SPEX(txpid5gh[3], SSB_SPROM4_TXPID5GH23,
446 SSB_SPROM4_TXPID5GH3, SSB_SPROM4_TXPID5GH3_SHIFT);
447 }
448
449 static void sprom_extract_r45(struct ssb_sprom *out, const u16 *in)
450 {
451 int i;
452 u16 v;
453 u16 il0mac_offset;
454
455 if (out->revision == 4)
456 il0mac_offset = SSB_SPROM4_IL0MAC;
457 else
458 il0mac_offset = SSB_SPROM5_IL0MAC;
459 /* extract the MAC address */
460 for (i = 0; i < 3; i++) {
461 v = in[SPOFF(il0mac_offset) + i];
462 *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
463 }
464 SPEX(et0phyaddr, SSB_SPROM4_ETHPHY, SSB_SPROM4_ETHPHY_ET0A, 0);
465 SPEX(et1phyaddr, SSB_SPROM4_ETHPHY, SSB_SPROM4_ETHPHY_ET1A,
466 SSB_SPROM4_ETHPHY_ET1A_SHIFT);
467 if (out->revision == 4) {
468 SPEX(country_code, SSB_SPROM4_CCODE, 0xFFFF, 0);
469 SPEX(boardflags_lo, SSB_SPROM4_BFLLO, 0xFFFF, 0);
470 SPEX(boardflags_hi, SSB_SPROM4_BFLHI, 0xFFFF, 0);
471 SPEX(boardflags2_lo, SSB_SPROM4_BFL2LO, 0xFFFF, 0);
472 SPEX(boardflags2_hi, SSB_SPROM4_BFL2HI, 0xFFFF, 0);
473 } else {
474 SPEX(country_code, SSB_SPROM5_CCODE, 0xFFFF, 0);
475 SPEX(boardflags_lo, SSB_SPROM5_BFLLO, 0xFFFF, 0);
476 SPEX(boardflags_hi, SSB_SPROM5_BFLHI, 0xFFFF, 0);
477 SPEX(boardflags2_lo, SSB_SPROM5_BFL2LO, 0xFFFF, 0);
478 SPEX(boardflags2_hi, SSB_SPROM5_BFL2HI, 0xFFFF, 0);
479 }
480 SPEX(ant_available_a, SSB_SPROM4_ANTAVAIL, SSB_SPROM4_ANTAVAIL_A,
481 SSB_SPROM4_ANTAVAIL_A_SHIFT);
482 SPEX(ant_available_bg, SSB_SPROM4_ANTAVAIL, SSB_SPROM4_ANTAVAIL_BG,
483 SSB_SPROM4_ANTAVAIL_BG_SHIFT);
484 SPEX(maxpwr_bg, SSB_SPROM4_MAXP_BG, SSB_SPROM4_MAXP_BG_MASK, 0);
485 SPEX(itssi_bg, SSB_SPROM4_MAXP_BG, SSB_SPROM4_ITSSI_BG,
486 SSB_SPROM4_ITSSI_BG_SHIFT);
487 SPEX(maxpwr_a, SSB_SPROM4_MAXP_A, SSB_SPROM4_MAXP_A_MASK, 0);
488 SPEX(itssi_a, SSB_SPROM4_MAXP_A, SSB_SPROM4_ITSSI_A,
489 SSB_SPROM4_ITSSI_A_SHIFT);
490 if (out->revision == 4) {
491 SPEX(gpio0, SSB_SPROM4_GPIOA, SSB_SPROM4_GPIOA_P0, 0);
492 SPEX(gpio1, SSB_SPROM4_GPIOA, SSB_SPROM4_GPIOA_P1,
493 SSB_SPROM4_GPIOA_P1_SHIFT);
494 SPEX(gpio2, SSB_SPROM4_GPIOB, SSB_SPROM4_GPIOB_P2, 0);
495 SPEX(gpio3, SSB_SPROM4_GPIOB, SSB_SPROM4_GPIOB_P3,
496 SSB_SPROM4_GPIOB_P3_SHIFT);
497 } else {
498 SPEX(gpio0, SSB_SPROM5_GPIOA, SSB_SPROM5_GPIOA_P0, 0);
499 SPEX(gpio1, SSB_SPROM5_GPIOA, SSB_SPROM5_GPIOA_P1,
500 SSB_SPROM5_GPIOA_P1_SHIFT);
501 SPEX(gpio2, SSB_SPROM5_GPIOB, SSB_SPROM5_GPIOB_P2, 0);
502 SPEX(gpio3, SSB_SPROM5_GPIOB, SSB_SPROM5_GPIOB_P3,
503 SSB_SPROM5_GPIOB_P3_SHIFT);
504 }
505
506 /* Extract the antenna gain values. */
507 SPEX(antenna_gain.ghz24.a0, SSB_SPROM4_AGAIN01,
508 SSB_SPROM4_AGAIN0, SSB_SPROM4_AGAIN0_SHIFT);
509 SPEX(antenna_gain.ghz24.a1, SSB_SPROM4_AGAIN01,
510 SSB_SPROM4_AGAIN1, SSB_SPROM4_AGAIN1_SHIFT);
511 SPEX(antenna_gain.ghz24.a2, SSB_SPROM4_AGAIN23,
512 SSB_SPROM4_AGAIN2, SSB_SPROM4_AGAIN2_SHIFT);
513 SPEX(antenna_gain.ghz24.a3, SSB_SPROM4_AGAIN23,
514 SSB_SPROM4_AGAIN3, SSB_SPROM4_AGAIN3_SHIFT);
515 memcpy(&out->antenna_gain.ghz5, &out->antenna_gain.ghz24,
516 sizeof(out->antenna_gain.ghz5));
517
518 sprom_extract_r458(out, in);
519
520 /* TODO - get remaining rev 4 stuff needed */
521 }
522
523 static void sprom_extract_r8(struct ssb_sprom *out, const u16 *in)
524 {
525 int i;
526 u16 v;
527
528 /* extract the MAC address */
529 for (i = 0; i < 3; i++) {
530 v = in[SPOFF(SSB_SPROM8_IL0MAC) + i];
531 *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
532 }
533 SPEX(country_code, SSB_SPROM8_CCODE, 0xFFFF, 0);
534 SPEX(boardflags_lo, SSB_SPROM8_BFLLO, 0xFFFF, 0);
535 SPEX(boardflags_hi, SSB_SPROM8_BFLHI, 0xFFFF, 0);
536 SPEX(boardflags2_lo, SSB_SPROM8_BFL2LO, 0xFFFF, 0);
537 SPEX(boardflags2_hi, SSB_SPROM8_BFL2HI, 0xFFFF, 0);
538 SPEX(ant_available_a, SSB_SPROM8_ANTAVAIL, SSB_SPROM8_ANTAVAIL_A,
539 SSB_SPROM8_ANTAVAIL_A_SHIFT);
540 SPEX(ant_available_bg, SSB_SPROM8_ANTAVAIL, SSB_SPROM8_ANTAVAIL_BG,
541 SSB_SPROM8_ANTAVAIL_BG_SHIFT);
542 SPEX(maxpwr_bg, SSB_SPROM8_MAXP_BG, SSB_SPROM8_MAXP_BG_MASK, 0);
543 SPEX(itssi_bg, SSB_SPROM8_MAXP_BG, SSB_SPROM8_ITSSI_BG,
544 SSB_SPROM8_ITSSI_BG_SHIFT);
545 SPEX(maxpwr_a, SSB_SPROM8_MAXP_A, SSB_SPROM8_MAXP_A_MASK, 0);
546 SPEX(itssi_a, SSB_SPROM8_MAXP_A, SSB_SPROM8_ITSSI_A,
547 SSB_SPROM8_ITSSI_A_SHIFT);
548 SPEX(maxpwr_ah, SSB_SPROM8_MAXP_AHL, SSB_SPROM8_MAXP_AH_MASK, 0);
549 SPEX(maxpwr_al, SSB_SPROM8_MAXP_AHL, SSB_SPROM8_MAXP_AL_MASK,
550 SSB_SPROM8_MAXP_AL_SHIFT);
551 SPEX(gpio0, SSB_SPROM8_GPIOA, SSB_SPROM8_GPIOA_P0, 0);
552 SPEX(gpio1, SSB_SPROM8_GPIOA, SSB_SPROM8_GPIOA_P1,
553 SSB_SPROM8_GPIOA_P1_SHIFT);
554 SPEX(gpio2, SSB_SPROM8_GPIOB, SSB_SPROM8_GPIOB_P2, 0);
555 SPEX(gpio3, SSB_SPROM8_GPIOB, SSB_SPROM8_GPIOB_P3,
556 SSB_SPROM8_GPIOB_P3_SHIFT);
557 SPEX(tri2g, SSB_SPROM8_TRI25G, SSB_SPROM8_TRI2G, 0);
558 SPEX(tri5g, SSB_SPROM8_TRI25G, SSB_SPROM8_TRI5G,
559 SSB_SPROM8_TRI5G_SHIFT);
560 SPEX(tri5gl, SSB_SPROM8_TRI5GHL, SSB_SPROM8_TRI5GL, 0);
561 SPEX(tri5gh, SSB_SPROM8_TRI5GHL, SSB_SPROM8_TRI5GH,
562 SSB_SPROM8_TRI5GH_SHIFT);
563 SPEX(rxpo2g, SSB_SPROM8_RXPO, SSB_SPROM8_RXPO2G, 0);
564 SPEX(rxpo5g, SSB_SPROM8_RXPO, SSB_SPROM8_RXPO5G,
565 SSB_SPROM8_RXPO5G_SHIFT);
566 SPEX(rssismf2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_RSSISMF2G, 0);
567 SPEX(rssismc2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_RSSISMC2G,
568 SSB_SPROM8_RSSISMC2G_SHIFT);
569 SPEX(rssisav2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_RSSISAV2G,
570 SSB_SPROM8_RSSISAV2G_SHIFT);
571 SPEX(bxa2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_BXA2G,
572 SSB_SPROM8_BXA2G_SHIFT);
573 SPEX(rssismf5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_RSSISMF5G, 0);
574 SPEX(rssismc5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_RSSISMC5G,
575 SSB_SPROM8_RSSISMC5G_SHIFT);
576 SPEX(rssisav5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_RSSISAV5G,
577 SSB_SPROM8_RSSISAV5G_SHIFT);
578 SPEX(bxa5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_BXA5G,
579 SSB_SPROM8_BXA5G_SHIFT);
580 SPEX(pa0b0, SSB_SPROM8_PA0B0, 0xFFFF, 0);
581 SPEX(pa0b1, SSB_SPROM8_PA0B1, 0xFFFF, 0);
582 SPEX(pa0b2, SSB_SPROM8_PA0B2, 0xFFFF, 0);
583 SPEX(pa1b0, SSB_SPROM8_PA1B0, 0xFFFF, 0);
584 SPEX(pa1b1, SSB_SPROM8_PA1B1, 0xFFFF, 0);
585 SPEX(pa1b2, SSB_SPROM8_PA1B2, 0xFFFF, 0);
586 SPEX(pa1lob0, SSB_SPROM8_PA1LOB0, 0xFFFF, 0);
587 SPEX(pa1lob1, SSB_SPROM8_PA1LOB1, 0xFFFF, 0);
588 SPEX(pa1lob2, SSB_SPROM8_PA1LOB2, 0xFFFF, 0);
589 SPEX(pa1hib0, SSB_SPROM8_PA1HIB0, 0xFFFF, 0);
590 SPEX(pa1hib1, SSB_SPROM8_PA1HIB1, 0xFFFF, 0);
591 SPEX(pa1hib2, SSB_SPROM8_PA1HIB2, 0xFFFF, 0);
592 SPEX(cck2gpo, SSB_SPROM8_CCK2GPO, 0xFFFF, 0);
593 SPEX32(ofdm2gpo, SSB_SPROM8_OFDM2GPO, 0xFFFFFFFF, 0);
594 SPEX32(ofdm5glpo, SSB_SPROM8_OFDM5GLPO, 0xFFFFFFFF, 0);
595 SPEX32(ofdm5gpo, SSB_SPROM8_OFDM5GPO, 0xFFFFFFFF, 0);
596 SPEX32(ofdm5ghpo, SSB_SPROM8_OFDM5GHPO, 0xFFFFFFFF, 0);
597
598 /* Extract the antenna gain values. */
599 SPEX(antenna_gain.ghz24.a0, SSB_SPROM8_AGAIN01,
600 SSB_SPROM8_AGAIN0, SSB_SPROM8_AGAIN0_SHIFT);
601 SPEX(antenna_gain.ghz24.a1, SSB_SPROM8_AGAIN01,
602 SSB_SPROM8_AGAIN1, SSB_SPROM8_AGAIN1_SHIFT);
603 SPEX(antenna_gain.ghz24.a2, SSB_SPROM8_AGAIN23,
604 SSB_SPROM8_AGAIN2, SSB_SPROM8_AGAIN2_SHIFT);
605 SPEX(antenna_gain.ghz24.a3, SSB_SPROM8_AGAIN23,
606 SSB_SPROM8_AGAIN3, SSB_SPROM8_AGAIN3_SHIFT);
607 memcpy(&out->antenna_gain.ghz5, &out->antenna_gain.ghz24,
608 sizeof(out->antenna_gain.ghz5));
609
610 /* Extract FEM info */
611 SPEX(fem.ghz2.tssipos, SSB_SPROM8_FEM2G,
612 SSB_SROM8_FEM_TSSIPOS, SSB_SROM8_FEM_TSSIPOS_SHIFT);
613 SPEX(fem.ghz2.extpa_gain, SSB_SPROM8_FEM2G,
614 SSB_SROM8_FEM_EXTPA_GAIN, SSB_SROM8_FEM_EXTPA_GAIN_SHIFT);
615 SPEX(fem.ghz2.pdet_range, SSB_SPROM8_FEM2G,
616 SSB_SROM8_FEM_PDET_RANGE, SSB_SROM8_FEM_PDET_RANGE_SHIFT);
617 SPEX(fem.ghz2.tr_iso, SSB_SPROM8_FEM2G,
618 SSB_SROM8_FEM_TR_ISO, SSB_SROM8_FEM_TR_ISO_SHIFT);
619 SPEX(fem.ghz2.antswlut, SSB_SPROM8_FEM2G,
620 SSB_SROM8_FEM_ANTSWLUT, SSB_SROM8_FEM_ANTSWLUT_SHIFT);
621
622 SPEX(fem.ghz5.tssipos, SSB_SPROM8_FEM5G,
623 SSB_SROM8_FEM_TSSIPOS, SSB_SROM8_FEM_TSSIPOS_SHIFT);
624 SPEX(fem.ghz5.extpa_gain, SSB_SPROM8_FEM5G,
625 SSB_SROM8_FEM_EXTPA_GAIN, SSB_SROM8_FEM_EXTPA_GAIN_SHIFT);
626 SPEX(fem.ghz5.pdet_range, SSB_SPROM8_FEM5G,
627 SSB_SROM8_FEM_PDET_RANGE, SSB_SROM8_FEM_PDET_RANGE_SHIFT);
628 SPEX(fem.ghz5.tr_iso, SSB_SPROM8_FEM5G,
629 SSB_SROM8_FEM_TR_ISO, SSB_SROM8_FEM_TR_ISO_SHIFT);
630 SPEX(fem.ghz5.antswlut, SSB_SPROM8_FEM5G,
631 SSB_SROM8_FEM_ANTSWLUT, SSB_SROM8_FEM_ANTSWLUT_SHIFT);
632
633 sprom_extract_r458(out, in);
634
635 /* TODO - get remaining rev 8 stuff needed */
636 }
637
638 static int sprom_extract(struct ssb_bus *bus, struct ssb_sprom *out,
639 const u16 *in, u16 size)
640 {
641 memset(out, 0, sizeof(*out));
642
643 out->revision = in[size - 1] & 0x00FF;
644 ssb_dprintk(KERN_DEBUG PFX "SPROM revision %d detected.\n", out->revision);
645 memset(out->et0mac, 0xFF, 6); /* preset et0 and et1 mac */
646 memset(out->et1mac, 0xFF, 6);
647
648 if ((bus->chip_id & 0xFF00) == 0x4400) {
649 /* Workaround: The BCM44XX chip has a stupid revision
650 * number stored in the SPROM.
651 * Always extract r1. */
652 out->revision = 1;
653 ssb_dprintk(KERN_DEBUG PFX "SPROM treated as revision %d\n", out->revision);
654 }
655
656 switch (out->revision) {
657 case 1:
658 case 2:
659 case 3:
660 sprom_extract_r123(out, in);
661 break;
662 case 4:
663 case 5:
664 sprom_extract_r45(out, in);
665 break;
666 case 8:
667 sprom_extract_r8(out, in);
668 break;
669 default:
670 ssb_printk(KERN_WARNING PFX "Unsupported SPROM"
671 " revision %d detected. Will extract"
672 " v1\n", out->revision);
673 out->revision = 1;
674 sprom_extract_r123(out, in);
675 }
676
677 if (out->boardflags_lo == 0xFFFF)
678 out->boardflags_lo = 0; /* per specs */
679 if (out->boardflags_hi == 0xFFFF)
680 out->boardflags_hi = 0; /* per specs */
681
682 return 0;
683 }
684
685 static int ssb_pci_sprom_get(struct ssb_bus *bus,
686 struct ssb_sprom *sprom)
687 {
688 int err;
689 u16 *buf;
690
691 if (!ssb_is_sprom_available(bus)) {
692 ssb_printk(KERN_ERR PFX "No SPROM available!\n");
693 return -ENODEV;
694 }
695 if (bus->chipco.dev) { /* can be unavailable! */
696 /*
697 * get SPROM offset: SSB_SPROM_BASE1 except for
698 * chipcommon rev >= 31 or chip ID is 0x4312 and
699 * chipcommon status & 3 == 2
700 */
701 if (bus->chipco.dev->id.revision >= 31)
702 bus->sprom_offset = SSB_SPROM_BASE31;
703 else if (bus->chip_id == 0x4312 &&
704 (bus->chipco.status & 0x03) == 2)
705 bus->sprom_offset = SSB_SPROM_BASE31;
706 else
707 bus->sprom_offset = SSB_SPROM_BASE1;
708 } else {
709 bus->sprom_offset = SSB_SPROM_BASE1;
710 }
711 ssb_dprintk(KERN_INFO PFX "SPROM offset is 0x%x\n", bus->sprom_offset);
712
713 buf = kcalloc(SSB_SPROMSIZE_WORDS_R123, sizeof(u16), GFP_KERNEL);
714 if (!buf)
715 return -ENOMEM;
716 bus->sprom_size = SSB_SPROMSIZE_WORDS_R123;
717 sprom_do_read(bus, buf);
718 err = sprom_check_crc(buf, bus->sprom_size);
719 if (err) {
720 /* try for a 440 byte SPROM - revision 4 and higher */
721 kfree(buf);
722 buf = kcalloc(SSB_SPROMSIZE_WORDS_R4, sizeof(u16),
723 GFP_KERNEL);
724 if (!buf)
725 return -ENOMEM;
726 bus->sprom_size = SSB_SPROMSIZE_WORDS_R4;
727 sprom_do_read(bus, buf);
728 err = sprom_check_crc(buf, bus->sprom_size);
729 if (err) {
730 /* All CRC attempts failed.
731 * Maybe there is no SPROM on the device?
732 * Now we ask the arch code if there is some sprom
733 * available for this device in some other storage */
734 err = ssb_fill_sprom_with_fallback(bus, sprom);
735 if (err) {
736 ssb_printk(KERN_WARNING PFX "WARNING: Using"
737 " fallback SPROM failed (err %d)\n",
738 err);
739 } else {
740 ssb_dprintk(KERN_DEBUG PFX "Using SPROM"
741 " revision %d provided by"
742 " platform.\n", sprom->revision);
743 err = 0;
744 goto out_free;
745 }
746 ssb_printk(KERN_WARNING PFX "WARNING: Invalid"
747 " SPROM CRC (corrupt SPROM)\n");
748 }
749 }
750 err = sprom_extract(bus, sprom, buf, bus->sprom_size);
751
752 out_free:
753 kfree(buf);
754 return err;
755 }
756
757 static void ssb_pci_get_boardinfo(struct ssb_bus *bus,
758 struct ssb_boardinfo *bi)
759 {
760 bi->vendor = bus->host_pci->subsystem_vendor;
761 bi->type = bus->host_pci->subsystem_device;
762 bi->rev = bus->host_pci->revision;
763 }
764
765 int ssb_pci_get_invariants(struct ssb_bus *bus,
766 struct ssb_init_invariants *iv)
767 {
768 int err;
769
770 err = ssb_pci_sprom_get(bus, &iv->sprom);
771 if (err)
772 goto out;
773 ssb_pci_get_boardinfo(bus, &iv->boardinfo);
774
775 out:
776 return err;
777 }
778
779 #ifdef CONFIG_SSB_DEBUG
780 static int ssb_pci_assert_buspower(struct ssb_bus *bus)
781 {
782 if (likely(bus->powered_up))
783 return 0;
784
785 printk(KERN_ERR PFX "FATAL ERROR: Bus powered down "
786 "while accessing PCI MMIO space\n");
787 if (bus->power_warn_count <= 10) {
788 bus->power_warn_count++;
789 dump_stack();
790 }
791
792 return -ENODEV;
793 }
794 #else /* DEBUG */
795 static inline int ssb_pci_assert_buspower(struct ssb_bus *bus)
796 {
797 return 0;
798 }
799 #endif /* DEBUG */
800
801 static u8 ssb_pci_read8(struct ssb_device *dev, u16 offset)
802 {
803 struct ssb_bus *bus = dev->bus;
804
805 if (unlikely(ssb_pci_assert_buspower(bus)))
806 return 0xFF;
807 if (unlikely(bus->mapped_device != dev)) {
808 if (unlikely(ssb_pci_switch_core(bus, dev)))
809 return 0xFF;
810 }
811 return ioread8(bus->mmio + offset);
812 }
813
814 static u16 ssb_pci_read16(struct ssb_device *dev, u16 offset)
815 {
816 struct ssb_bus *bus = dev->bus;
817
818 if (unlikely(ssb_pci_assert_buspower(bus)))
819 return 0xFFFF;
820 if (unlikely(bus->mapped_device != dev)) {
821 if (unlikely(ssb_pci_switch_core(bus, dev)))
822 return 0xFFFF;
823 }
824 return ioread16(bus->mmio + offset);
825 }
826
827 static u32 ssb_pci_read32(struct ssb_device *dev, u16 offset)
828 {
829 struct ssb_bus *bus = dev->bus;
830
831 if (unlikely(ssb_pci_assert_buspower(bus)))
832 return 0xFFFFFFFF;
833 if (unlikely(bus->mapped_device != dev)) {
834 if (unlikely(ssb_pci_switch_core(bus, dev)))
835 return 0xFFFFFFFF;
836 }
837 return ioread32(bus->mmio + offset);
838 }
839
840 #ifdef CONFIG_SSB_BLOCKIO
841 static void ssb_pci_block_read(struct ssb_device *dev, void *buffer,
842 size_t count, u16 offset, u8 reg_width)
843 {
844 struct ssb_bus *bus = dev->bus;
845 void __iomem *addr = bus->mmio + offset;
846
847 if (unlikely(ssb_pci_assert_buspower(bus)))
848 goto error;
849 if (unlikely(bus->mapped_device != dev)) {
850 if (unlikely(ssb_pci_switch_core(bus, dev)))
851 goto error;
852 }
853 switch (reg_width) {
854 case sizeof(u8):
855 ioread8_rep(addr, buffer, count);
856 break;
857 case sizeof(u16):
858 SSB_WARN_ON(count & 1);
859 ioread16_rep(addr, buffer, count >> 1);
860 break;
861 case sizeof(u32):
862 SSB_WARN_ON(count & 3);
863 ioread32_rep(addr, buffer, count >> 2);
864 break;
865 default:
866 SSB_WARN_ON(1);
867 }
868
869 return;
870 error:
871 memset(buffer, 0xFF, count);
872 }
873 #endif /* CONFIG_SSB_BLOCKIO */
874
875 static void ssb_pci_write8(struct ssb_device *dev, u16 offset, u8 value)
876 {
877 struct ssb_bus *bus = dev->bus;
878
879 if (unlikely(ssb_pci_assert_buspower(bus)))
880 return;
881 if (unlikely(bus->mapped_device != dev)) {
882 if (unlikely(ssb_pci_switch_core(bus, dev)))
883 return;
884 }
885 iowrite8(value, bus->mmio + offset);
886 }
887
888 static void ssb_pci_write16(struct ssb_device *dev, u16 offset, u16 value)
889 {
890 struct ssb_bus *bus = dev->bus;
891
892 if (unlikely(ssb_pci_assert_buspower(bus)))
893 return;
894 if (unlikely(bus->mapped_device != dev)) {
895 if (unlikely(ssb_pci_switch_core(bus, dev)))
896 return;
897 }
898 iowrite16(value, bus->mmio + offset);
899 }
900
901 static void ssb_pci_write32(struct ssb_device *dev, u16 offset, u32 value)
902 {
903 struct ssb_bus *bus = dev->bus;
904
905 if (unlikely(ssb_pci_assert_buspower(bus)))
906 return;
907 if (unlikely(bus->mapped_device != dev)) {
908 if (unlikely(ssb_pci_switch_core(bus, dev)))
909 return;
910 }
911 iowrite32(value, bus->mmio + offset);
912 }
913
914 #ifdef CONFIG_SSB_BLOCKIO
915 static void ssb_pci_block_write(struct ssb_device *dev, const void *buffer,
916 size_t count, u16 offset, u8 reg_width)
917 {
918 struct ssb_bus *bus = dev->bus;
919 void __iomem *addr = bus->mmio + offset;
920
921 if (unlikely(ssb_pci_assert_buspower(bus)))
922 return;
923 if (unlikely(bus->mapped_device != dev)) {
924 if (unlikely(ssb_pci_switch_core(bus, dev)))
925 return;
926 }
927 switch (reg_width) {
928 case sizeof(u8):
929 iowrite8_rep(addr, buffer, count);
930 break;
931 case sizeof(u16):
932 SSB_WARN_ON(count & 1);
933 iowrite16_rep(addr, buffer, count >> 1);
934 break;
935 case sizeof(u32):
936 SSB_WARN_ON(count & 3);
937 iowrite32_rep(addr, buffer, count >> 2);
938 break;
939 default:
940 SSB_WARN_ON(1);
941 }
942 }
943 #endif /* CONFIG_SSB_BLOCKIO */
944
945 /* Not "static", as it's used in main.c */
946 const struct ssb_bus_ops ssb_pci_ops = {
947 .read8 = ssb_pci_read8,
948 .read16 = ssb_pci_read16,
949 .read32 = ssb_pci_read32,
950 .write8 = ssb_pci_write8,
951 .write16 = ssb_pci_write16,
952 .write32 = ssb_pci_write32,
953 #ifdef CONFIG_SSB_BLOCKIO
954 .block_read = ssb_pci_block_read,
955 .block_write = ssb_pci_block_write,
956 #endif
957 };
958
959 static ssize_t ssb_pci_attr_sprom_show(struct device *pcidev,
960 struct device_attribute *attr,
961 char *buf)
962 {
963 struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);
964 struct ssb_bus *bus;
965
966 bus = ssb_pci_dev_to_bus(pdev);
967 if (!bus)
968 return -ENODEV;
969
970 return ssb_attr_sprom_show(bus, buf, sprom_do_read);
971 }
972
973 static ssize_t ssb_pci_attr_sprom_store(struct device *pcidev,
974 struct device_attribute *attr,
975 const char *buf, size_t count)
976 {
977 struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);
978 struct ssb_bus *bus;
979
980 bus = ssb_pci_dev_to_bus(pdev);
981 if (!bus)
982 return -ENODEV;
983
984 return ssb_attr_sprom_store(bus, buf, count,
985 sprom_check_crc, sprom_do_write);
986 }
987
988 static DEVICE_ATTR(ssb_sprom, 0600,
989 ssb_pci_attr_sprom_show,
990 ssb_pci_attr_sprom_store);
991
992 void ssb_pci_exit(struct ssb_bus *bus)
993 {
994 struct pci_dev *pdev;
995
996 if (bus->bustype != SSB_BUSTYPE_PCI)
997 return;
998
999 pdev = bus->host_pci;
1000 device_remove_file(&pdev->dev, &dev_attr_ssb_sprom);
1001 }
1002
1003 int ssb_pci_init(struct ssb_bus *bus)
1004 {
1005 struct pci_dev *pdev;
1006 int err;
1007
1008 if (bus->bustype != SSB_BUSTYPE_PCI)
1009 return 0;
1010
1011 pdev = bus->host_pci;
1012 mutex_init(&bus->sprom_mutex);
1013 err = device_create_file(&pdev->dev, &dev_attr_ssb_sprom);
1014 if (err)
1015 goto out;
1016
1017 out:
1018 return err;
1019 }