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Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into for-linus
[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / drivers / ssb / pci.c
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 u16 loc[3];
335
336 if (out->revision == 3) /* rev 3 moved MAC */
337 loc[0] = SSB_SPROM3_IL0MAC;
338 else {
339 loc[0] = SSB_SPROM1_IL0MAC;
340 loc[1] = SSB_SPROM1_ET0MAC;
341 loc[2] = SSB_SPROM1_ET1MAC;
342 }
343 for (i = 0; i < 3; i++) {
344 v = in[SPOFF(loc[0]) + i];
345 *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
346 }
347 if (out->revision < 3) { /* only rev 1-2 have et0, et1 */
348 for (i = 0; i < 3; i++) {
349 v = in[SPOFF(loc[1]) + i];
350 *(((__be16 *)out->et0mac) + i) = cpu_to_be16(v);
351 }
352 for (i = 0; i < 3; i++) {
353 v = in[SPOFF(loc[2]) + i];
354 *(((__be16 *)out->et1mac) + i) = cpu_to_be16(v);
355 }
356 }
357 SPEX(et0phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0A, 0);
358 SPEX(et1phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1A,
359 SSB_SPROM1_ETHPHY_ET1A_SHIFT);
360 SPEX(et0mdcport, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0M, 14);
361 SPEX(et1mdcport, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1M, 15);
362 SPEX(board_rev, SSB_SPROM1_BINF, SSB_SPROM1_BINF_BREV, 0);
363 SPEX(country_code, SSB_SPROM1_BINF, SSB_SPROM1_BINF_CCODE,
364 SSB_SPROM1_BINF_CCODE_SHIFT);
365 SPEX(ant_available_a, SSB_SPROM1_BINF, SSB_SPROM1_BINF_ANTA,
366 SSB_SPROM1_BINF_ANTA_SHIFT);
367 SPEX(ant_available_bg, SSB_SPROM1_BINF, SSB_SPROM1_BINF_ANTBG,
368 SSB_SPROM1_BINF_ANTBG_SHIFT);
369 SPEX(pa0b0, SSB_SPROM1_PA0B0, 0xFFFF, 0);
370 SPEX(pa0b1, SSB_SPROM1_PA0B1, 0xFFFF, 0);
371 SPEX(pa0b2, SSB_SPROM1_PA0B2, 0xFFFF, 0);
372 SPEX(pa1b0, SSB_SPROM1_PA1B0, 0xFFFF, 0);
373 SPEX(pa1b1, SSB_SPROM1_PA1B1, 0xFFFF, 0);
374 SPEX(pa1b2, SSB_SPROM1_PA1B2, 0xFFFF, 0);
375 SPEX(gpio0, SSB_SPROM1_GPIOA, SSB_SPROM1_GPIOA_P0, 0);
376 SPEX(gpio1, SSB_SPROM1_GPIOA, SSB_SPROM1_GPIOA_P1,
377 SSB_SPROM1_GPIOA_P1_SHIFT);
378 SPEX(gpio2, SSB_SPROM1_GPIOB, SSB_SPROM1_GPIOB_P2, 0);
379 SPEX(gpio3, SSB_SPROM1_GPIOB, SSB_SPROM1_GPIOB_P3,
380 SSB_SPROM1_GPIOB_P3_SHIFT);
381 SPEX(maxpwr_a, SSB_SPROM1_MAXPWR, SSB_SPROM1_MAXPWR_A,
382 SSB_SPROM1_MAXPWR_A_SHIFT);
383 SPEX(maxpwr_bg, SSB_SPROM1_MAXPWR, SSB_SPROM1_MAXPWR_BG, 0);
384 SPEX(itssi_a, SSB_SPROM1_ITSSI, SSB_SPROM1_ITSSI_A,
385 SSB_SPROM1_ITSSI_A_SHIFT);
386 SPEX(itssi_bg, SSB_SPROM1_ITSSI, SSB_SPROM1_ITSSI_BG, 0);
387 SPEX(boardflags_lo, SSB_SPROM1_BFLLO, 0xFFFF, 0);
388 if (out->revision >= 2)
389 SPEX(boardflags_hi, SSB_SPROM2_BFLHI, 0xFFFF, 0);
390
391 /* Extract the antenna gain values. */
392 out->antenna_gain.a0 = r123_extract_antgain(out->revision, in,
393 SSB_SPROM1_AGAIN_BG,
394 SSB_SPROM1_AGAIN_BG_SHIFT);
395 out->antenna_gain.a1 = r123_extract_antgain(out->revision, in,
396 SSB_SPROM1_AGAIN_A,
397 SSB_SPROM1_AGAIN_A_SHIFT);
398 }
399
400 /* Revs 4 5 and 8 have partially shared layout */
401 static void sprom_extract_r458(struct ssb_sprom *out, const u16 *in)
402 {
403 SPEX(txpid2g[0], SSB_SPROM4_TXPID2G01,
404 SSB_SPROM4_TXPID2G0, SSB_SPROM4_TXPID2G0_SHIFT);
405 SPEX(txpid2g[1], SSB_SPROM4_TXPID2G01,
406 SSB_SPROM4_TXPID2G1, SSB_SPROM4_TXPID2G1_SHIFT);
407 SPEX(txpid2g[2], SSB_SPROM4_TXPID2G23,
408 SSB_SPROM4_TXPID2G2, SSB_SPROM4_TXPID2G2_SHIFT);
409 SPEX(txpid2g[3], SSB_SPROM4_TXPID2G23,
410 SSB_SPROM4_TXPID2G3, SSB_SPROM4_TXPID2G3_SHIFT);
411
412 SPEX(txpid5gl[0], SSB_SPROM4_TXPID5GL01,
413 SSB_SPROM4_TXPID5GL0, SSB_SPROM4_TXPID5GL0_SHIFT);
414 SPEX(txpid5gl[1], SSB_SPROM4_TXPID5GL01,
415 SSB_SPROM4_TXPID5GL1, SSB_SPROM4_TXPID5GL1_SHIFT);
416 SPEX(txpid5gl[2], SSB_SPROM4_TXPID5GL23,
417 SSB_SPROM4_TXPID5GL2, SSB_SPROM4_TXPID5GL2_SHIFT);
418 SPEX(txpid5gl[3], SSB_SPROM4_TXPID5GL23,
419 SSB_SPROM4_TXPID5GL3, SSB_SPROM4_TXPID5GL3_SHIFT);
420
421 SPEX(txpid5g[0], SSB_SPROM4_TXPID5G01,
422 SSB_SPROM4_TXPID5G0, SSB_SPROM4_TXPID5G0_SHIFT);
423 SPEX(txpid5g[1], SSB_SPROM4_TXPID5G01,
424 SSB_SPROM4_TXPID5G1, SSB_SPROM4_TXPID5G1_SHIFT);
425 SPEX(txpid5g[2], SSB_SPROM4_TXPID5G23,
426 SSB_SPROM4_TXPID5G2, SSB_SPROM4_TXPID5G2_SHIFT);
427 SPEX(txpid5g[3], SSB_SPROM4_TXPID5G23,
428 SSB_SPROM4_TXPID5G3, SSB_SPROM4_TXPID5G3_SHIFT);
429
430 SPEX(txpid5gh[0], SSB_SPROM4_TXPID5GH01,
431 SSB_SPROM4_TXPID5GH0, SSB_SPROM4_TXPID5GH0_SHIFT);
432 SPEX(txpid5gh[1], SSB_SPROM4_TXPID5GH01,
433 SSB_SPROM4_TXPID5GH1, SSB_SPROM4_TXPID5GH1_SHIFT);
434 SPEX(txpid5gh[2], SSB_SPROM4_TXPID5GH23,
435 SSB_SPROM4_TXPID5GH2, SSB_SPROM4_TXPID5GH2_SHIFT);
436 SPEX(txpid5gh[3], SSB_SPROM4_TXPID5GH23,
437 SSB_SPROM4_TXPID5GH3, SSB_SPROM4_TXPID5GH3_SHIFT);
438 }
439
440 static void sprom_extract_r45(struct ssb_sprom *out, const u16 *in)
441 {
442 int i;
443 u16 v;
444 u16 il0mac_offset;
445
446 if (out->revision == 4)
447 il0mac_offset = SSB_SPROM4_IL0MAC;
448 else
449 il0mac_offset = SSB_SPROM5_IL0MAC;
450 /* extract the MAC address */
451 for (i = 0; i < 3; i++) {
452 v = in[SPOFF(il0mac_offset) + i];
453 *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
454 }
455 SPEX(et0phyaddr, SSB_SPROM4_ETHPHY, SSB_SPROM4_ETHPHY_ET0A, 0);
456 SPEX(et1phyaddr, SSB_SPROM4_ETHPHY, SSB_SPROM4_ETHPHY_ET1A,
457 SSB_SPROM4_ETHPHY_ET1A_SHIFT);
458 if (out->revision == 4) {
459 SPEX(country_code, SSB_SPROM4_CCODE, 0xFFFF, 0);
460 SPEX(boardflags_lo, SSB_SPROM4_BFLLO, 0xFFFF, 0);
461 SPEX(boardflags_hi, SSB_SPROM4_BFLHI, 0xFFFF, 0);
462 SPEX(boardflags2_lo, SSB_SPROM4_BFL2LO, 0xFFFF, 0);
463 SPEX(boardflags2_hi, SSB_SPROM4_BFL2HI, 0xFFFF, 0);
464 } else {
465 SPEX(country_code, SSB_SPROM5_CCODE, 0xFFFF, 0);
466 SPEX(boardflags_lo, SSB_SPROM5_BFLLO, 0xFFFF, 0);
467 SPEX(boardflags_hi, SSB_SPROM5_BFLHI, 0xFFFF, 0);
468 SPEX(boardflags2_lo, SSB_SPROM5_BFL2LO, 0xFFFF, 0);
469 SPEX(boardflags2_hi, SSB_SPROM5_BFL2HI, 0xFFFF, 0);
470 }
471 SPEX(ant_available_a, SSB_SPROM4_ANTAVAIL, SSB_SPROM4_ANTAVAIL_A,
472 SSB_SPROM4_ANTAVAIL_A_SHIFT);
473 SPEX(ant_available_bg, SSB_SPROM4_ANTAVAIL, SSB_SPROM4_ANTAVAIL_BG,
474 SSB_SPROM4_ANTAVAIL_BG_SHIFT);
475 SPEX(maxpwr_bg, SSB_SPROM4_MAXP_BG, SSB_SPROM4_MAXP_BG_MASK, 0);
476 SPEX(itssi_bg, SSB_SPROM4_MAXP_BG, SSB_SPROM4_ITSSI_BG,
477 SSB_SPROM4_ITSSI_BG_SHIFT);
478 SPEX(maxpwr_a, SSB_SPROM4_MAXP_A, SSB_SPROM4_MAXP_A_MASK, 0);
479 SPEX(itssi_a, SSB_SPROM4_MAXP_A, SSB_SPROM4_ITSSI_A,
480 SSB_SPROM4_ITSSI_A_SHIFT);
481 if (out->revision == 4) {
482 SPEX(gpio0, SSB_SPROM4_GPIOA, SSB_SPROM4_GPIOA_P0, 0);
483 SPEX(gpio1, SSB_SPROM4_GPIOA, SSB_SPROM4_GPIOA_P1,
484 SSB_SPROM4_GPIOA_P1_SHIFT);
485 SPEX(gpio2, SSB_SPROM4_GPIOB, SSB_SPROM4_GPIOB_P2, 0);
486 SPEX(gpio3, SSB_SPROM4_GPIOB, SSB_SPROM4_GPIOB_P3,
487 SSB_SPROM4_GPIOB_P3_SHIFT);
488 } else {
489 SPEX(gpio0, SSB_SPROM5_GPIOA, SSB_SPROM5_GPIOA_P0, 0);
490 SPEX(gpio1, SSB_SPROM5_GPIOA, SSB_SPROM5_GPIOA_P1,
491 SSB_SPROM5_GPIOA_P1_SHIFT);
492 SPEX(gpio2, SSB_SPROM5_GPIOB, SSB_SPROM5_GPIOB_P2, 0);
493 SPEX(gpio3, SSB_SPROM5_GPIOB, SSB_SPROM5_GPIOB_P3,
494 SSB_SPROM5_GPIOB_P3_SHIFT);
495 }
496
497 /* Extract the antenna gain values. */
498 SPEX(antenna_gain.a0, SSB_SPROM4_AGAIN01,
499 SSB_SPROM4_AGAIN0, SSB_SPROM4_AGAIN0_SHIFT);
500 SPEX(antenna_gain.a1, SSB_SPROM4_AGAIN01,
501 SSB_SPROM4_AGAIN1, SSB_SPROM4_AGAIN1_SHIFT);
502 SPEX(antenna_gain.a2, SSB_SPROM4_AGAIN23,
503 SSB_SPROM4_AGAIN2, SSB_SPROM4_AGAIN2_SHIFT);
504 SPEX(antenna_gain.a3, SSB_SPROM4_AGAIN23,
505 SSB_SPROM4_AGAIN3, SSB_SPROM4_AGAIN3_SHIFT);
506
507 sprom_extract_r458(out, in);
508
509 /* TODO - get remaining rev 4 stuff needed */
510 }
511
512 static void sprom_extract_r8(struct ssb_sprom *out, const u16 *in)
513 {
514 int i;
515 u16 v, o;
516 u16 pwr_info_offset[] = {
517 SSB_SROM8_PWR_INFO_CORE0, SSB_SROM8_PWR_INFO_CORE1,
518 SSB_SROM8_PWR_INFO_CORE2, SSB_SROM8_PWR_INFO_CORE3
519 };
520 BUILD_BUG_ON(ARRAY_SIZE(pwr_info_offset) !=
521 ARRAY_SIZE(out->core_pwr_info));
522
523 /* extract the MAC address */
524 for (i = 0; i < 3; i++) {
525 v = in[SPOFF(SSB_SPROM8_IL0MAC) + i];
526 *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
527 }
528 SPEX(country_code, SSB_SPROM8_CCODE, 0xFFFF, 0);
529 SPEX(boardflags_lo, SSB_SPROM8_BFLLO, 0xFFFF, 0);
530 SPEX(boardflags_hi, SSB_SPROM8_BFLHI, 0xFFFF, 0);
531 SPEX(boardflags2_lo, SSB_SPROM8_BFL2LO, 0xFFFF, 0);
532 SPEX(boardflags2_hi, SSB_SPROM8_BFL2HI, 0xFFFF, 0);
533 SPEX(ant_available_a, SSB_SPROM8_ANTAVAIL, SSB_SPROM8_ANTAVAIL_A,
534 SSB_SPROM8_ANTAVAIL_A_SHIFT);
535 SPEX(ant_available_bg, SSB_SPROM8_ANTAVAIL, SSB_SPROM8_ANTAVAIL_BG,
536 SSB_SPROM8_ANTAVAIL_BG_SHIFT);
537 SPEX(maxpwr_bg, SSB_SPROM8_MAXP_BG, SSB_SPROM8_MAXP_BG_MASK, 0);
538 SPEX(itssi_bg, SSB_SPROM8_MAXP_BG, SSB_SPROM8_ITSSI_BG,
539 SSB_SPROM8_ITSSI_BG_SHIFT);
540 SPEX(maxpwr_a, SSB_SPROM8_MAXP_A, SSB_SPROM8_MAXP_A_MASK, 0);
541 SPEX(itssi_a, SSB_SPROM8_MAXP_A, SSB_SPROM8_ITSSI_A,
542 SSB_SPROM8_ITSSI_A_SHIFT);
543 SPEX(maxpwr_ah, SSB_SPROM8_MAXP_AHL, SSB_SPROM8_MAXP_AH_MASK, 0);
544 SPEX(maxpwr_al, SSB_SPROM8_MAXP_AHL, SSB_SPROM8_MAXP_AL_MASK,
545 SSB_SPROM8_MAXP_AL_SHIFT);
546 SPEX(gpio0, SSB_SPROM8_GPIOA, SSB_SPROM8_GPIOA_P0, 0);
547 SPEX(gpio1, SSB_SPROM8_GPIOA, SSB_SPROM8_GPIOA_P1,
548 SSB_SPROM8_GPIOA_P1_SHIFT);
549 SPEX(gpio2, SSB_SPROM8_GPIOB, SSB_SPROM8_GPIOB_P2, 0);
550 SPEX(gpio3, SSB_SPROM8_GPIOB, SSB_SPROM8_GPIOB_P3,
551 SSB_SPROM8_GPIOB_P3_SHIFT);
552 SPEX(tri2g, SSB_SPROM8_TRI25G, SSB_SPROM8_TRI2G, 0);
553 SPEX(tri5g, SSB_SPROM8_TRI25G, SSB_SPROM8_TRI5G,
554 SSB_SPROM8_TRI5G_SHIFT);
555 SPEX(tri5gl, SSB_SPROM8_TRI5GHL, SSB_SPROM8_TRI5GL, 0);
556 SPEX(tri5gh, SSB_SPROM8_TRI5GHL, SSB_SPROM8_TRI5GH,
557 SSB_SPROM8_TRI5GH_SHIFT);
558 SPEX(rxpo2g, SSB_SPROM8_RXPO, SSB_SPROM8_RXPO2G, 0);
559 SPEX(rxpo5g, SSB_SPROM8_RXPO, SSB_SPROM8_RXPO5G,
560 SSB_SPROM8_RXPO5G_SHIFT);
561 SPEX(rssismf2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_RSSISMF2G, 0);
562 SPEX(rssismc2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_RSSISMC2G,
563 SSB_SPROM8_RSSISMC2G_SHIFT);
564 SPEX(rssisav2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_RSSISAV2G,
565 SSB_SPROM8_RSSISAV2G_SHIFT);
566 SPEX(bxa2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_BXA2G,
567 SSB_SPROM8_BXA2G_SHIFT);
568 SPEX(rssismf5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_RSSISMF5G, 0);
569 SPEX(rssismc5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_RSSISMC5G,
570 SSB_SPROM8_RSSISMC5G_SHIFT);
571 SPEX(rssisav5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_RSSISAV5G,
572 SSB_SPROM8_RSSISAV5G_SHIFT);
573 SPEX(bxa5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_BXA5G,
574 SSB_SPROM8_BXA5G_SHIFT);
575 SPEX(pa0b0, SSB_SPROM8_PA0B0, 0xFFFF, 0);
576 SPEX(pa0b1, SSB_SPROM8_PA0B1, 0xFFFF, 0);
577 SPEX(pa0b2, SSB_SPROM8_PA0B2, 0xFFFF, 0);
578 SPEX(pa1b0, SSB_SPROM8_PA1B0, 0xFFFF, 0);
579 SPEX(pa1b1, SSB_SPROM8_PA1B1, 0xFFFF, 0);
580 SPEX(pa1b2, SSB_SPROM8_PA1B2, 0xFFFF, 0);
581 SPEX(pa1lob0, SSB_SPROM8_PA1LOB0, 0xFFFF, 0);
582 SPEX(pa1lob1, SSB_SPROM8_PA1LOB1, 0xFFFF, 0);
583 SPEX(pa1lob2, SSB_SPROM8_PA1LOB2, 0xFFFF, 0);
584 SPEX(pa1hib0, SSB_SPROM8_PA1HIB0, 0xFFFF, 0);
585 SPEX(pa1hib1, SSB_SPROM8_PA1HIB1, 0xFFFF, 0);
586 SPEX(pa1hib2, SSB_SPROM8_PA1HIB2, 0xFFFF, 0);
587 SPEX(cck2gpo, SSB_SPROM8_CCK2GPO, 0xFFFF, 0);
588 SPEX32(ofdm2gpo, SSB_SPROM8_OFDM2GPO, 0xFFFFFFFF, 0);
589 SPEX32(ofdm5glpo, SSB_SPROM8_OFDM5GLPO, 0xFFFFFFFF, 0);
590 SPEX32(ofdm5gpo, SSB_SPROM8_OFDM5GPO, 0xFFFFFFFF, 0);
591 SPEX32(ofdm5ghpo, SSB_SPROM8_OFDM5GHPO, 0xFFFFFFFF, 0);
592
593 /* Extract the antenna gain values. */
594 SPEX(antenna_gain.a0, SSB_SPROM8_AGAIN01,
595 SSB_SPROM8_AGAIN0, SSB_SPROM8_AGAIN0_SHIFT);
596 SPEX(antenna_gain.a1, SSB_SPROM8_AGAIN01,
597 SSB_SPROM8_AGAIN1, SSB_SPROM8_AGAIN1_SHIFT);
598 SPEX(antenna_gain.a2, SSB_SPROM8_AGAIN23,
599 SSB_SPROM8_AGAIN2, SSB_SPROM8_AGAIN2_SHIFT);
600 SPEX(antenna_gain.a3, SSB_SPROM8_AGAIN23,
601 SSB_SPROM8_AGAIN3, SSB_SPROM8_AGAIN3_SHIFT);
602
603 /* Extract cores power info info */
604 for (i = 0; i < ARRAY_SIZE(pwr_info_offset); i++) {
605 o = pwr_info_offset[i];
606 SPEX(core_pwr_info[i].itssi_2g, o + SSB_SROM8_2G_MAXP_ITSSI,
607 SSB_SPROM8_2G_ITSSI, SSB_SPROM8_2G_ITSSI_SHIFT);
608 SPEX(core_pwr_info[i].maxpwr_2g, o + SSB_SROM8_2G_MAXP_ITSSI,
609 SSB_SPROM8_2G_MAXP, 0);
610
611 SPEX(core_pwr_info[i].pa_2g[0], o + SSB_SROM8_2G_PA_0, ~0, 0);
612 SPEX(core_pwr_info[i].pa_2g[1], o + SSB_SROM8_2G_PA_1, ~0, 0);
613 SPEX(core_pwr_info[i].pa_2g[2], o + SSB_SROM8_2G_PA_2, ~0, 0);
614
615 SPEX(core_pwr_info[i].itssi_5g, o + SSB_SROM8_5G_MAXP_ITSSI,
616 SSB_SPROM8_5G_ITSSI, SSB_SPROM8_5G_ITSSI_SHIFT);
617 SPEX(core_pwr_info[i].maxpwr_5g, o + SSB_SROM8_5G_MAXP_ITSSI,
618 SSB_SPROM8_5G_MAXP, 0);
619 SPEX(core_pwr_info[i].maxpwr_5gh, o + SSB_SPROM8_5GHL_MAXP,
620 SSB_SPROM8_5GH_MAXP, 0);
621 SPEX(core_pwr_info[i].maxpwr_5gl, o + SSB_SPROM8_5GHL_MAXP,
622 SSB_SPROM8_5GL_MAXP, SSB_SPROM8_5GL_MAXP_SHIFT);
623
624 SPEX(core_pwr_info[i].pa_5gl[0], o + SSB_SROM8_5GL_PA_0, ~0, 0);
625 SPEX(core_pwr_info[i].pa_5gl[1], o + SSB_SROM8_5GL_PA_1, ~0, 0);
626 SPEX(core_pwr_info[i].pa_5gl[2], o + SSB_SROM8_5GL_PA_2, ~0, 0);
627 SPEX(core_pwr_info[i].pa_5g[0], o + SSB_SROM8_5G_PA_0, ~0, 0);
628 SPEX(core_pwr_info[i].pa_5g[1], o + SSB_SROM8_5G_PA_1, ~0, 0);
629 SPEX(core_pwr_info[i].pa_5g[2], o + SSB_SROM8_5G_PA_2, ~0, 0);
630 SPEX(core_pwr_info[i].pa_5gh[0], o + SSB_SROM8_5GH_PA_0, ~0, 0);
631 SPEX(core_pwr_info[i].pa_5gh[1], o + SSB_SROM8_5GH_PA_1, ~0, 0);
632 SPEX(core_pwr_info[i].pa_5gh[2], o + SSB_SROM8_5GH_PA_2, ~0, 0);
633 }
634
635 /* Extract FEM info */
636 SPEX(fem.ghz2.tssipos, SSB_SPROM8_FEM2G,
637 SSB_SROM8_FEM_TSSIPOS, SSB_SROM8_FEM_TSSIPOS_SHIFT);
638 SPEX(fem.ghz2.extpa_gain, SSB_SPROM8_FEM2G,
639 SSB_SROM8_FEM_EXTPA_GAIN, SSB_SROM8_FEM_EXTPA_GAIN_SHIFT);
640 SPEX(fem.ghz2.pdet_range, SSB_SPROM8_FEM2G,
641 SSB_SROM8_FEM_PDET_RANGE, SSB_SROM8_FEM_PDET_RANGE_SHIFT);
642 SPEX(fem.ghz2.tr_iso, SSB_SPROM8_FEM2G,
643 SSB_SROM8_FEM_TR_ISO, SSB_SROM8_FEM_TR_ISO_SHIFT);
644 SPEX(fem.ghz2.antswlut, SSB_SPROM8_FEM2G,
645 SSB_SROM8_FEM_ANTSWLUT, SSB_SROM8_FEM_ANTSWLUT_SHIFT);
646
647 SPEX(fem.ghz5.tssipos, SSB_SPROM8_FEM5G,
648 SSB_SROM8_FEM_TSSIPOS, SSB_SROM8_FEM_TSSIPOS_SHIFT);
649 SPEX(fem.ghz5.extpa_gain, SSB_SPROM8_FEM5G,
650 SSB_SROM8_FEM_EXTPA_GAIN, SSB_SROM8_FEM_EXTPA_GAIN_SHIFT);
651 SPEX(fem.ghz5.pdet_range, SSB_SPROM8_FEM5G,
652 SSB_SROM8_FEM_PDET_RANGE, SSB_SROM8_FEM_PDET_RANGE_SHIFT);
653 SPEX(fem.ghz5.tr_iso, SSB_SPROM8_FEM5G,
654 SSB_SROM8_FEM_TR_ISO, SSB_SROM8_FEM_TR_ISO_SHIFT);
655 SPEX(fem.ghz5.antswlut, SSB_SPROM8_FEM5G,
656 SSB_SROM8_FEM_ANTSWLUT, SSB_SROM8_FEM_ANTSWLUT_SHIFT);
657
658 sprom_extract_r458(out, in);
659
660 /* TODO - get remaining rev 8 stuff needed */
661 }
662
663 static int sprom_extract(struct ssb_bus *bus, struct ssb_sprom *out,
664 const u16 *in, u16 size)
665 {
666 memset(out, 0, sizeof(*out));
667
668 out->revision = in[size - 1] & 0x00FF;
669 ssb_dprintk(KERN_DEBUG PFX "SPROM revision %d detected.\n", out->revision);
670 memset(out->et0mac, 0xFF, 6); /* preset et0 and et1 mac */
671 memset(out->et1mac, 0xFF, 6);
672
673 if ((bus->chip_id & 0xFF00) == 0x4400) {
674 /* Workaround: The BCM44XX chip has a stupid revision
675 * number stored in the SPROM.
676 * Always extract r1. */
677 out->revision = 1;
678 ssb_dprintk(KERN_DEBUG PFX "SPROM treated as revision %d\n", out->revision);
679 }
680
681 switch (out->revision) {
682 case 1:
683 case 2:
684 case 3:
685 sprom_extract_r123(out, in);
686 break;
687 case 4:
688 case 5:
689 sprom_extract_r45(out, in);
690 break;
691 case 8:
692 sprom_extract_r8(out, in);
693 break;
694 default:
695 ssb_printk(KERN_WARNING PFX "Unsupported SPROM"
696 " revision %d detected. Will extract"
697 " v1\n", out->revision);
698 out->revision = 1;
699 sprom_extract_r123(out, in);
700 }
701
702 if (out->boardflags_lo == 0xFFFF)
703 out->boardflags_lo = 0; /* per specs */
704 if (out->boardflags_hi == 0xFFFF)
705 out->boardflags_hi = 0; /* per specs */
706
707 return 0;
708 }
709
710 static int ssb_pci_sprom_get(struct ssb_bus *bus,
711 struct ssb_sprom *sprom)
712 {
713 int err;
714 u16 *buf;
715
716 if (!ssb_is_sprom_available(bus)) {
717 ssb_printk(KERN_ERR PFX "No SPROM available!\n");
718 return -ENODEV;
719 }
720 if (bus->chipco.dev) { /* can be unavailable! */
721 /*
722 * get SPROM offset: SSB_SPROM_BASE1 except for
723 * chipcommon rev >= 31 or chip ID is 0x4312 and
724 * chipcommon status & 3 == 2
725 */
726 if (bus->chipco.dev->id.revision >= 31)
727 bus->sprom_offset = SSB_SPROM_BASE31;
728 else if (bus->chip_id == 0x4312 &&
729 (bus->chipco.status & 0x03) == 2)
730 bus->sprom_offset = SSB_SPROM_BASE31;
731 else
732 bus->sprom_offset = SSB_SPROM_BASE1;
733 } else {
734 bus->sprom_offset = SSB_SPROM_BASE1;
735 }
736 ssb_dprintk(KERN_INFO PFX "SPROM offset is 0x%x\n", bus->sprom_offset);
737
738 buf = kcalloc(SSB_SPROMSIZE_WORDS_R123, sizeof(u16), GFP_KERNEL);
739 if (!buf)
740 return -ENOMEM;
741 bus->sprom_size = SSB_SPROMSIZE_WORDS_R123;
742 sprom_do_read(bus, buf);
743 err = sprom_check_crc(buf, bus->sprom_size);
744 if (err) {
745 /* try for a 440 byte SPROM - revision 4 and higher */
746 kfree(buf);
747 buf = kcalloc(SSB_SPROMSIZE_WORDS_R4, sizeof(u16),
748 GFP_KERNEL);
749 if (!buf)
750 return -ENOMEM;
751 bus->sprom_size = SSB_SPROMSIZE_WORDS_R4;
752 sprom_do_read(bus, buf);
753 err = sprom_check_crc(buf, bus->sprom_size);
754 if (err) {
755 /* All CRC attempts failed.
756 * Maybe there is no SPROM on the device?
757 * Now we ask the arch code if there is some sprom
758 * available for this device in some other storage */
759 err = ssb_fill_sprom_with_fallback(bus, sprom);
760 if (err) {
761 ssb_printk(KERN_WARNING PFX "WARNING: Using"
762 " fallback SPROM failed (err %d)\n",
763 err);
764 } else {
765 ssb_dprintk(KERN_DEBUG PFX "Using SPROM"
766 " revision %d provided by"
767 " platform.\n", sprom->revision);
768 err = 0;
769 goto out_free;
770 }
771 ssb_printk(KERN_WARNING PFX "WARNING: Invalid"
772 " SPROM CRC (corrupt SPROM)\n");
773 }
774 }
775 err = sprom_extract(bus, sprom, buf, bus->sprom_size);
776
777 out_free:
778 kfree(buf);
779 return err;
780 }
781
782 static void ssb_pci_get_boardinfo(struct ssb_bus *bus,
783 struct ssb_boardinfo *bi)
784 {
785 bi->vendor = bus->host_pci->subsystem_vendor;
786 bi->type = bus->host_pci->subsystem_device;
787 bi->rev = bus->host_pci->revision;
788 }
789
790 int ssb_pci_get_invariants(struct ssb_bus *bus,
791 struct ssb_init_invariants *iv)
792 {
793 int err;
794
795 err = ssb_pci_sprom_get(bus, &iv->sprom);
796 if (err)
797 goto out;
798 ssb_pci_get_boardinfo(bus, &iv->boardinfo);
799
800 out:
801 return err;
802 }
803
804 #ifdef CONFIG_SSB_DEBUG
805 static int ssb_pci_assert_buspower(struct ssb_bus *bus)
806 {
807 if (likely(bus->powered_up))
808 return 0;
809
810 printk(KERN_ERR PFX "FATAL ERROR: Bus powered down "
811 "while accessing PCI MMIO space\n");
812 if (bus->power_warn_count <= 10) {
813 bus->power_warn_count++;
814 dump_stack();
815 }
816
817 return -ENODEV;
818 }
819 #else /* DEBUG */
820 static inline int ssb_pci_assert_buspower(struct ssb_bus *bus)
821 {
822 return 0;
823 }
824 #endif /* DEBUG */
825
826 static u8 ssb_pci_read8(struct ssb_device *dev, u16 offset)
827 {
828 struct ssb_bus *bus = dev->bus;
829
830 if (unlikely(ssb_pci_assert_buspower(bus)))
831 return 0xFF;
832 if (unlikely(bus->mapped_device != dev)) {
833 if (unlikely(ssb_pci_switch_core(bus, dev)))
834 return 0xFF;
835 }
836 return ioread8(bus->mmio + offset);
837 }
838
839 static u16 ssb_pci_read16(struct ssb_device *dev, u16 offset)
840 {
841 struct ssb_bus *bus = dev->bus;
842
843 if (unlikely(ssb_pci_assert_buspower(bus)))
844 return 0xFFFF;
845 if (unlikely(bus->mapped_device != dev)) {
846 if (unlikely(ssb_pci_switch_core(bus, dev)))
847 return 0xFFFF;
848 }
849 return ioread16(bus->mmio + offset);
850 }
851
852 static u32 ssb_pci_read32(struct ssb_device *dev, u16 offset)
853 {
854 struct ssb_bus *bus = dev->bus;
855
856 if (unlikely(ssb_pci_assert_buspower(bus)))
857 return 0xFFFFFFFF;
858 if (unlikely(bus->mapped_device != dev)) {
859 if (unlikely(ssb_pci_switch_core(bus, dev)))
860 return 0xFFFFFFFF;
861 }
862 return ioread32(bus->mmio + offset);
863 }
864
865 #ifdef CONFIG_SSB_BLOCKIO
866 static void ssb_pci_block_read(struct ssb_device *dev, void *buffer,
867 size_t count, u16 offset, u8 reg_width)
868 {
869 struct ssb_bus *bus = dev->bus;
870 void __iomem *addr = bus->mmio + offset;
871
872 if (unlikely(ssb_pci_assert_buspower(bus)))
873 goto error;
874 if (unlikely(bus->mapped_device != dev)) {
875 if (unlikely(ssb_pci_switch_core(bus, dev)))
876 goto error;
877 }
878 switch (reg_width) {
879 case sizeof(u8):
880 ioread8_rep(addr, buffer, count);
881 break;
882 case sizeof(u16):
883 SSB_WARN_ON(count & 1);
884 ioread16_rep(addr, buffer, count >> 1);
885 break;
886 case sizeof(u32):
887 SSB_WARN_ON(count & 3);
888 ioread32_rep(addr, buffer, count >> 2);
889 break;
890 default:
891 SSB_WARN_ON(1);
892 }
893
894 return;
895 error:
896 memset(buffer, 0xFF, count);
897 }
898 #endif /* CONFIG_SSB_BLOCKIO */
899
900 static void ssb_pci_write8(struct ssb_device *dev, u16 offset, u8 value)
901 {
902 struct ssb_bus *bus = dev->bus;
903
904 if (unlikely(ssb_pci_assert_buspower(bus)))
905 return;
906 if (unlikely(bus->mapped_device != dev)) {
907 if (unlikely(ssb_pci_switch_core(bus, dev)))
908 return;
909 }
910 iowrite8(value, bus->mmio + offset);
911 }
912
913 static void ssb_pci_write16(struct ssb_device *dev, u16 offset, u16 value)
914 {
915 struct ssb_bus *bus = dev->bus;
916
917 if (unlikely(ssb_pci_assert_buspower(bus)))
918 return;
919 if (unlikely(bus->mapped_device != dev)) {
920 if (unlikely(ssb_pci_switch_core(bus, dev)))
921 return;
922 }
923 iowrite16(value, bus->mmio + offset);
924 }
925
926 static void ssb_pci_write32(struct ssb_device *dev, u16 offset, u32 value)
927 {
928 struct ssb_bus *bus = dev->bus;
929
930 if (unlikely(ssb_pci_assert_buspower(bus)))
931 return;
932 if (unlikely(bus->mapped_device != dev)) {
933 if (unlikely(ssb_pci_switch_core(bus, dev)))
934 return;
935 }
936 iowrite32(value, bus->mmio + offset);
937 }
938
939 #ifdef CONFIG_SSB_BLOCKIO
940 static void ssb_pci_block_write(struct ssb_device *dev, const void *buffer,
941 size_t count, u16 offset, u8 reg_width)
942 {
943 struct ssb_bus *bus = dev->bus;
944 void __iomem *addr = bus->mmio + offset;
945
946 if (unlikely(ssb_pci_assert_buspower(bus)))
947 return;
948 if (unlikely(bus->mapped_device != dev)) {
949 if (unlikely(ssb_pci_switch_core(bus, dev)))
950 return;
951 }
952 switch (reg_width) {
953 case sizeof(u8):
954 iowrite8_rep(addr, buffer, count);
955 break;
956 case sizeof(u16):
957 SSB_WARN_ON(count & 1);
958 iowrite16_rep(addr, buffer, count >> 1);
959 break;
960 case sizeof(u32):
961 SSB_WARN_ON(count & 3);
962 iowrite32_rep(addr, buffer, count >> 2);
963 break;
964 default:
965 SSB_WARN_ON(1);
966 }
967 }
968 #endif /* CONFIG_SSB_BLOCKIO */
969
970 /* Not "static", as it's used in main.c */
971 const struct ssb_bus_ops ssb_pci_ops = {
972 .read8 = ssb_pci_read8,
973 .read16 = ssb_pci_read16,
974 .read32 = ssb_pci_read32,
975 .write8 = ssb_pci_write8,
976 .write16 = ssb_pci_write16,
977 .write32 = ssb_pci_write32,
978 #ifdef CONFIG_SSB_BLOCKIO
979 .block_read = ssb_pci_block_read,
980 .block_write = ssb_pci_block_write,
981 #endif
982 };
983
984 static ssize_t ssb_pci_attr_sprom_show(struct device *pcidev,
985 struct device_attribute *attr,
986 char *buf)
987 {
988 struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);
989 struct ssb_bus *bus;
990
991 bus = ssb_pci_dev_to_bus(pdev);
992 if (!bus)
993 return -ENODEV;
994
995 return ssb_attr_sprom_show(bus, buf, sprom_do_read);
996 }
997
998 static ssize_t ssb_pci_attr_sprom_store(struct device *pcidev,
999 struct device_attribute *attr,
1000 const char *buf, size_t count)
1001 {
1002 struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);
1003 struct ssb_bus *bus;
1004
1005 bus = ssb_pci_dev_to_bus(pdev);
1006 if (!bus)
1007 return -ENODEV;
1008
1009 return ssb_attr_sprom_store(bus, buf, count,
1010 sprom_check_crc, sprom_do_write);
1011 }
1012
1013 static DEVICE_ATTR(ssb_sprom, 0600,
1014 ssb_pci_attr_sprom_show,
1015 ssb_pci_attr_sprom_store);
1016
1017 void ssb_pci_exit(struct ssb_bus *bus)
1018 {
1019 struct pci_dev *pdev;
1020
1021 if (bus->bustype != SSB_BUSTYPE_PCI)
1022 return;
1023
1024 pdev = bus->host_pci;
1025 device_remove_file(&pdev->dev, &dev_attr_ssb_sprom);
1026 }
1027
1028 int ssb_pci_init(struct ssb_bus *bus)
1029 {
1030 struct pci_dev *pdev;
1031 int err;
1032
1033 if (bus->bustype != SSB_BUSTYPE_PCI)
1034 return 0;
1035
1036 pdev = bus->host_pci;
1037 mutex_init(&bus->sprom_mutex);
1038 err = device_create_file(&pdev->dev, &dev_attr_ssb_sprom);
1039 if (err)
1040 goto out;
1041
1042 out:
1043 return err;
1044 }