blob: 34c3bab90b9a1e6a9e5f0032c207d16fc86ef21c [file] [log] [blame]
Michael Buesch61e115a2007-09-18 15:12:50 -04001/*
2 * Sonics Silicon Backplane PCI-Hostbus related functions.
3 *
Michael Büscheb032b92011-07-04 20:50:05 +02004 * Copyright (C) 2005-2006 Michael Buesch <m@bues.ch>
Michael Buesch61e115a2007-09-18 15:12:50 -04005 * 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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090020#include <linux/slab.h>
Michael Buesch61e115a2007-09-18 15:12:50 -040021#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 */
32int 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;
58error:
59 ssb_printk(KERN_ERR PFX "Failed to switch to core %u\n", coreidx);
60 return -ENODEV;
61}
62
63int 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. */
86int 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
161out:
162 return err;
163
164err_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. */
Rafał Miłecki0a182fd2010-03-31 22:54:18 +0200171#define SPOFF(offset) ((offset) / sizeof(u16))
Michael Buesch61e115a2007-09-18 15:12:50 -0400172/* Helper to extract some _offset, which is one of the SSB_SPROM_XXX defines. */
Gábor Stefanikf6790562009-08-10 21:23:08 +0200173#define SPEX16(_outvar, _offset, _mask, _shift) \
Michael Buesch61e115a2007-09-18 15:12:50 -0400174 out->_outvar = ((in[SPOFF(_offset)] & (_mask)) >> (_shift))
Gábor Stefanikf6790562009-08-10 21:23:08 +0200175#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
Michael Buesch61e115a2007-09-18 15:12:50 -0400181
182static 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
Larry Fingerc272ef42007-11-09 16:56:25 -0600222static u8 ssb_sprom_crc(const u16 *sprom, u16 size)
Michael Buesch61e115a2007-09-18 15:12:50 -0400223{
224 int word;
225 u8 crc = 0xFF;
226
Larry Fingerc272ef42007-11-09 16:56:25 -0600227 for (word = 0; word < size - 1; word++) {
Michael Buesch61e115a2007-09-18 15:12:50 -0400228 crc = ssb_crc8(crc, sprom[word] & 0x00FF);
229 crc = ssb_crc8(crc, (sprom[word] & 0xFF00) >> 8);
230 }
Larry Fingerc272ef42007-11-09 16:56:25 -0600231 crc = ssb_crc8(crc, sprom[size - 1] & 0x00FF);
Michael Buesch61e115a2007-09-18 15:12:50 -0400232 crc ^= 0xFF;
233
234 return crc;
235}
236
Michael Buesche7ec2e32008-03-10 17:26:32 +0100237static int sprom_check_crc(const u16 *sprom, size_t size)
Michael Buesch61e115a2007-09-18 15:12:50 -0400238{
239 u8 crc;
240 u8 expected_crc;
241 u16 tmp;
242
Larry Fingerc272ef42007-11-09 16:56:25 -0600243 crc = ssb_sprom_crc(sprom, size);
244 tmp = sprom[size - 1] & SSB_SPROM_REVISION_CRC;
Michael Buesch61e115a2007-09-18 15:12:50 -0400245 expected_crc = tmp >> SSB_SPROM_REVISION_CRC_SHIFT;
246 if (crc != expected_crc)
247 return -EPROTO;
248
249 return 0;
250}
251
Michael Buesche7ec2e32008-03-10 17:26:32 +0100252static int sprom_do_read(struct ssb_bus *bus, u16 *sprom)
Michael Buesch61e115a2007-09-18 15:12:50 -0400253{
254 int i;
255
Larry Fingerc272ef42007-11-09 16:56:25 -0600256 for (i = 0; i < bus->sprom_size; i++)
Rafał Miłeckiea2db492010-03-31 21:59:21 +0200257 sprom[i] = ioread16(bus->mmio + bus->sprom_offset + (i * 2));
Michael Buesche7ec2e32008-03-10 17:26:32 +0100258
259 return 0;
Michael Buesch61e115a2007-09-18 15:12:50 -0400260}
261
262static 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;
Larry Fingerc272ef42007-11-09 16:56:25 -0600267 u16 size = bus->sprom_size;
Michael Buesch61e115a2007-09-18 15:12:50 -0400268
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);
Larry Fingerc272ef42007-11-09 16:56:25 -0600279 for (i = 0; i < size; i++) {
280 if (i == size / 4)
Michael Buesch61e115a2007-09-18 15:12:50 -0400281 ssb_printk("25%%");
Larry Fingerc272ef42007-11-09 16:56:25 -0600282 else if (i == size / 2)
Michael Buesch61e115a2007-09-18 15:12:50 -0400283 ssb_printk("50%%");
Larry Fingerc272ef42007-11-09 16:56:25 -0600284 else if (i == (size * 3) / 4)
Michael Buesch61e115a2007-09-18 15:12:50 -0400285 ssb_printk("75%%");
286 else if (i % 2)
287 ssb_printk(".");
Rafał Miłeckiea2db492010-03-31 21:59:21 +0200288 writew(sprom[i], bus->mmio + bus->sprom_offset + (i * 2));
Michael Buesch61e115a2007-09-18 15:12:50 -0400289 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;
304err_ctlreg:
305 ssb_printk(KERN_ERR PFX "Could not access SPROM control register.\n");
306 return err;
307}
308
Michael Buesche861b982007-12-22 21:51:30 +0100309static 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
Larry Fingerc272ef42007-11-09 16:56:25 -0600330static void sprom_extract_r123(struct ssb_sprom *out, const u16 *in)
331{
332 int i;
333 u16 v;
Michael Buesche861b982007-12-22 21:51:30 +0100334 s8 gain;
Larry Fingerc272ef42007-11-09 16:56:25 -0600335 u16 loc[3];
336
Larry Finger31ce12f2008-08-20 17:45:06 -0500337 if (out->revision == 3) /* rev 3 moved MAC */
Larry Fingerc272ef42007-11-09 16:56:25 -0600338 loc[0] = SSB_SPROM3_IL0MAC;
Larry Finger31ce12f2008-08-20 17:45:06 -0500339 else {
Larry Fingerc272ef42007-11-09 16:56:25 -0600340 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 }
Larry Finger31ce12f2008-08-20 17:45:06 -0500348 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 }
Larry Fingerc272ef42007-11-09 16:56:25 -0600357 }
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);
Michael Buesche861b982007-12-22 21:51:30 +0100361 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);
Larry Fingerc272ef42007-11-09 16:56:25 -0600364 SPEX(country_code, SSB_SPROM1_BINF, SSB_SPROM1_BINF_CCODE,
365 SSB_SPROM1_BINF_CCODE_SHIFT);
Michael Buesche861b982007-12-22 21:51:30 +0100366 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);
Larry Fingerc272ef42007-11-09 16:56:25 -0600370 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);
Michael Bueschaf4b74502008-01-13 21:08:24 +0100389 if (out->revision >= 2)
390 SPEX(boardflags_hi, SSB_SPROM2_BFLHI, 0xFFFF, 0);
Michael Buesche861b982007-12-22 21:51:30 +0100391
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;
Larry Fingerc272ef42007-11-09 16:56:25 -0600407}
408
Rafał Miłecki172c69a2010-11-28 10:39:35 +0100409/* Revs 4 5 and 8 have partially shared layout */
410static 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
Larry Finger095f6952008-08-19 12:50:31 -0500449static void sprom_extract_r45(struct ssb_sprom *out, const u16 *in)
Michael Buesch61e115a2007-09-18 15:12:50 -0400450{
451 int i;
452 u16 v;
Larry Finger095f6952008-08-19 12:50:31 -0500453 u16 il0mac_offset;
Michael Buesch61e115a2007-09-18 15:12:50 -0400454
Larry Finger095f6952008-08-19 12:50:31 -0500455 if (out->revision == 4)
456 il0mac_offset = SSB_SPROM4_IL0MAC;
457 else
458 il0mac_offset = SSB_SPROM5_IL0MAC;
Larry Finger31ce12f2008-08-20 17:45:06 -0500459 /* extract the MAC address */
Larry Fingerc272ef42007-11-09 16:56:25 -0600460 for (i = 0; i < 3; i++) {
Larry Finger095f6952008-08-19 12:50:31 -0500461 v = in[SPOFF(il0mac_offset) + i];
Larry Fingerc272ef42007-11-09 16:56:25 -0600462 *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
Michael Buesch61e115a2007-09-18 15:12:50 -0400463 }
Larry Fingerc272ef42007-11-09 16:56:25 -0600464 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);
Larry Finger095f6952008-08-19 12:50:31 -0500467 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);
Rafał Miłecki6d1d4ea2011-02-08 23:32:17 +0100471 SPEX(boardflags2_lo, SSB_SPROM4_BFL2LO, 0xFFFF, 0);
472 SPEX(boardflags2_hi, SSB_SPROM4_BFL2HI, 0xFFFF, 0);
Larry Finger095f6952008-08-19 12:50:31 -0500473 } 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);
Rafał Miłecki6d1d4ea2011-02-08 23:32:17 +0100477 SPEX(boardflags2_lo, SSB_SPROM5_BFL2LO, 0xFFFF, 0);
478 SPEX(boardflags2_hi, SSB_SPROM5_BFL2HI, 0xFFFF, 0);
Larry Finger095f6952008-08-19 12:50:31 -0500479 }
Michael Buesche861b982007-12-22 21:51:30 +0100480 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);
Larry Fingerd3c319f2007-11-09 16:58:20 -0600484 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);
Larry Finger095f6952008-08-19 12:50:31 -0500490 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 }
Michael Buesche861b982007-12-22 21:51:30 +0100505
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
Rafał Miłecki172c69a2010-11-28 10:39:35 +0100518 sprom_extract_r458(out, in);
519
Larry Fingerc272ef42007-11-09 16:56:25 -0600520 /* TODO - get remaining rev 4 stuff needed */
Michael Buesch61e115a2007-09-18 15:12:50 -0400521}
522
Michael Buesch6b1c7c62008-12-25 00:39:28 +0100523static 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++) {
Gábor Stefanikf0ea6ce2009-08-14 14:11:53 +0200530 v = in[SPOFF(SSB_SPROM8_IL0MAC) + i];
Michael Buesch6b1c7c62008-12-25 00:39:28 +0100531 *(((__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);
Gábor Stefanikf6790562009-08-10 21:23:08 +0200536 SPEX(boardflags2_lo, SSB_SPROM8_BFL2LO, 0xFFFF, 0);
537 SPEX(boardflags2_hi, SSB_SPROM8_BFL2HI, 0xFFFF, 0);
Michael Buesch6b1c7c62008-12-25 00:39:28 +0100538 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);
Gábor Stefanikf6790562009-08-10 21:23:08 +0200548 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);
Michael Buesch6b1c7c62008-12-25 00:39:28 +0100551 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);
Gábor Stefanikf6790562009-08-10 21:23:08 +0200557 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);
Michael Buesch6b1c7c62008-12-25 00:39:28 +0100597
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
Rafał Miłecki172c69a2010-11-28 10:39:35 +0100610 sprom_extract_r458(out, in);
611
Michael Buesch6b1c7c62008-12-25 00:39:28 +0100612 /* TODO - get remaining rev 8 stuff needed */
613}
614
Larry Fingerc272ef42007-11-09 16:56:25 -0600615static int sprom_extract(struct ssb_bus *bus, struct ssb_sprom *out,
616 const u16 *in, u16 size)
Michael Buesch61e115a2007-09-18 15:12:50 -0400617{
618 memset(out, 0, sizeof(*out));
619
Larry Fingerc272ef42007-11-09 16:56:25 -0600620 out->revision = in[size - 1] & 0x00FF;
Michael Buesche861b982007-12-22 21:51:30 +0100621 ssb_dprintk(KERN_DEBUG PFX "SPROM revision %d detected.\n", out->revision);
Larry Finger31ce12f2008-08-20 17:45:06 -0500622 memset(out->et0mac, 0xFF, 6); /* preset et0 and et1 mac */
623 memset(out->et1mac, 0xFF, 6);
Rafał Miłecki54435f92010-11-03 22:06:26 +0100624
Michael Buesch61e115a2007-09-18 15:12:50 -0400625 if ((bus->chip_id & 0xFF00) == 0x4400) {
626 /* Workaround: The BCM44XX chip has a stupid revision
627 * number stored in the SPROM.
628 * Always extract r1. */
Larry Fingerc272ef42007-11-09 16:56:25 -0600629 out->revision = 1;
Rafał Miłecki54435f92010-11-03 22:06:26 +0100630 ssb_dprintk(KERN_DEBUG PFX "SPROM treated as revision %d\n", out->revision);
Rafał Miłecki54435f92010-11-03 22:06:26 +0100631 }
632
633 switch (out->revision) {
634 case 1:
635 case 2:
636 case 3:
637 sprom_extract_r123(out, in);
638 break;
639 case 4:
640 case 5:
Larry Finger095f6952008-08-19 12:50:31 -0500641 sprom_extract_r45(out, in);
Rafał Miłecki54435f92010-11-03 22:06:26 +0100642 break;
643 case 8:
644 sprom_extract_r8(out, in);
645 break;
646 default:
647 ssb_printk(KERN_WARNING PFX "Unsupported SPROM"
Rafał Miłecki98605c22011-02-16 13:58:25 +0100648 " revision %d detected. Will extract"
Rafał Miłecki54435f92010-11-03 22:06:26 +0100649 " v1\n", out->revision);
650 out->revision = 1;
651 sprom_extract_r123(out, in);
Michael Buesch61e115a2007-09-18 15:12:50 -0400652 }
653
Larry Finger45031832008-04-19 17:52:12 +0200654 if (out->boardflags_lo == 0xFFFF)
655 out->boardflags_lo = 0; /* per specs */
656 if (out->boardflags_hi == 0xFFFF)
657 out->boardflags_hi = 0; /* per specs */
658
Michael Buesch61e115a2007-09-18 15:12:50 -0400659 return 0;
Michael Buesch61e115a2007-09-18 15:12:50 -0400660}
661
662static int ssb_pci_sprom_get(struct ssb_bus *bus,
663 struct ssb_sprom *sprom)
664{
Rafał Miłeckica4a0832010-11-03 23:28:45 +0100665 int err;
Michael Buesch61e115a2007-09-18 15:12:50 -0400666 u16 *buf;
667
John W. Linvilled53cdbb2010-03-31 21:39:35 +0200668 if (!ssb_is_sprom_available(bus)) {
669 ssb_printk(KERN_ERR PFX "No SPROM available!\n");
670 return -ENODEV;
671 }
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300672 if (bus->chipco.dev) { /* can be unavailable! */
Larry Finger9d1ac342010-05-14 22:08:58 -0500673 /*
674 * get SPROM offset: SSB_SPROM_BASE1 except for
675 * chipcommon rev >= 31 or chip ID is 0x4312 and
676 * chipcommon status & 3 == 2
677 */
678 if (bus->chipco.dev->id.revision >= 31)
679 bus->sprom_offset = SSB_SPROM_BASE31;
680 else if (bus->chip_id == 0x4312 &&
681 (bus->chipco.status & 0x03) == 2)
682 bus->sprom_offset = SSB_SPROM_BASE31;
683 else
684 bus->sprom_offset = SSB_SPROM_BASE1;
Christoph Fritzda1fdb02010-05-28 10:45:59 +0200685 } else {
686 bus->sprom_offset = SSB_SPROM_BASE1;
687 }
Larry Finger9d1ac342010-05-14 22:08:58 -0500688 ssb_dprintk(KERN_INFO PFX "SPROM offset is 0x%x\n", bus->sprom_offset);
Rafał Miłeckiea2db492010-03-31 21:59:21 +0200689
Larry Fingerc272ef42007-11-09 16:56:25 -0600690 buf = kcalloc(SSB_SPROMSIZE_WORDS_R123, sizeof(u16), GFP_KERNEL);
Michael Buesch61e115a2007-09-18 15:12:50 -0400691 if (!buf)
Rafał Miłeckica4a0832010-11-03 23:28:45 +0100692 return -ENOMEM;
Larry Fingerc272ef42007-11-09 16:56:25 -0600693 bus->sprom_size = SSB_SPROMSIZE_WORDS_R123;
Michael Buesch61e115a2007-09-18 15:12:50 -0400694 sprom_do_read(bus, buf);
Larry Fingerc272ef42007-11-09 16:56:25 -0600695 err = sprom_check_crc(buf, bus->sprom_size);
Michael Buesch61e115a2007-09-18 15:12:50 -0400696 if (err) {
Larry.Finger@lwfinger.net2afc4902008-04-19 16:24:09 +0200697 /* try for a 440 byte SPROM - revision 4 and higher */
698 kfree(buf);
699 buf = kcalloc(SSB_SPROMSIZE_WORDS_R4, sizeof(u16),
700 GFP_KERNEL);
701 if (!buf)
Rafał Miłeckica4a0832010-11-03 23:28:45 +0100702 return -ENOMEM;
Larry.Finger@lwfinger.net2afc4902008-04-19 16:24:09 +0200703 bus->sprom_size = SSB_SPROMSIZE_WORDS_R4;
704 sprom_do_read(bus, buf);
705 err = sprom_check_crc(buf, bus->sprom_size);
Michael Buesche79c1ba2009-02-27 16:59:05 +0100706 if (err) {
707 /* All CRC attempts failed.
708 * Maybe there is no SPROM on the device?
Hauke Mehrtensb3ae52b2011-05-10 23:31:30 +0200709 * Now we ask the arch code if there is some sprom
710 * available for this device in some other storage */
711 err = ssb_fill_sprom_with_fallback(bus, sprom);
712 if (err) {
713 ssb_printk(KERN_WARNING PFX "WARNING: Using"
714 " fallback SPROM failed (err %d)\n",
715 err);
716 } else {
717 ssb_dprintk(KERN_DEBUG PFX "Using SPROM"
718 " revision %d provided by"
719 " platform.\n", sprom->revision);
Michael Buesche79c1ba2009-02-27 16:59:05 +0100720 err = 0;
721 goto out_free;
722 }
Larry Fingerc272ef42007-11-09 16:56:25 -0600723 ssb_printk(KERN_WARNING PFX "WARNING: Invalid"
724 " SPROM CRC (corrupt SPROM)\n");
Michael Buesche79c1ba2009-02-27 16:59:05 +0100725 }
Michael Buesch61e115a2007-09-18 15:12:50 -0400726 }
Larry Fingerc272ef42007-11-09 16:56:25 -0600727 err = sprom_extract(bus, sprom, buf, bus->sprom_size);
Michael Buesch61e115a2007-09-18 15:12:50 -0400728
Michael Buesche79c1ba2009-02-27 16:59:05 +0100729out_free:
Michael Buesch61e115a2007-09-18 15:12:50 -0400730 kfree(buf);
Michael Buesch61e115a2007-09-18 15:12:50 -0400731 return err;
732}
733
734static void ssb_pci_get_boardinfo(struct ssb_bus *bus,
735 struct ssb_boardinfo *bi)
736{
Sergei Shtylyov115f9452011-07-01 22:34:42 +0400737 bi->vendor = bus->host_pci->subsystem_vendor;
738 bi->type = bus->host_pci->subsystem_device;
Sergei Shtylyov2fa231902011-07-01 22:33:08 +0400739 bi->rev = bus->host_pci->revision;
Michael Buesch61e115a2007-09-18 15:12:50 -0400740}
741
742int ssb_pci_get_invariants(struct ssb_bus *bus,
743 struct ssb_init_invariants *iv)
744{
745 int err;
746
747 err = ssb_pci_sprom_get(bus, &iv->sprom);
748 if (err)
749 goto out;
750 ssb_pci_get_boardinfo(bus, &iv->boardinfo);
751
752out:
753 return err;
754}
755
756#ifdef CONFIG_SSB_DEBUG
757static int ssb_pci_assert_buspower(struct ssb_bus *bus)
758{
759 if (likely(bus->powered_up))
760 return 0;
761
762 printk(KERN_ERR PFX "FATAL ERROR: Bus powered down "
763 "while accessing PCI MMIO space\n");
764 if (bus->power_warn_count <= 10) {
765 bus->power_warn_count++;
766 dump_stack();
767 }
768
769 return -ENODEV;
770}
771#else /* DEBUG */
772static inline int ssb_pci_assert_buspower(struct ssb_bus *bus)
773{
774 return 0;
775}
776#endif /* DEBUG */
777
Michael Bueschffc76892008-02-20 19:08:10 +0100778static u8 ssb_pci_read8(struct ssb_device *dev, u16 offset)
779{
780 struct ssb_bus *bus = dev->bus;
781
782 if (unlikely(ssb_pci_assert_buspower(bus)))
783 return 0xFF;
784 if (unlikely(bus->mapped_device != dev)) {
785 if (unlikely(ssb_pci_switch_core(bus, dev)))
786 return 0xFF;
787 }
788 return ioread8(bus->mmio + offset);
789}
790
Michael Buesch61e115a2007-09-18 15:12:50 -0400791static u16 ssb_pci_read16(struct ssb_device *dev, u16 offset)
792{
793 struct ssb_bus *bus = dev->bus;
794
795 if (unlikely(ssb_pci_assert_buspower(bus)))
796 return 0xFFFF;
797 if (unlikely(bus->mapped_device != dev)) {
798 if (unlikely(ssb_pci_switch_core(bus, dev)))
799 return 0xFFFF;
800 }
Michael Buesch4b402c62007-09-19 18:53:44 +0200801 return ioread16(bus->mmio + offset);
Michael Buesch61e115a2007-09-18 15:12:50 -0400802}
803
804static u32 ssb_pci_read32(struct ssb_device *dev, u16 offset)
805{
806 struct ssb_bus *bus = dev->bus;
807
808 if (unlikely(ssb_pci_assert_buspower(bus)))
809 return 0xFFFFFFFF;
810 if (unlikely(bus->mapped_device != dev)) {
811 if (unlikely(ssb_pci_switch_core(bus, dev)))
812 return 0xFFFFFFFF;
813 }
Michael Buesch4b402c62007-09-19 18:53:44 +0200814 return ioread32(bus->mmio + offset);
Michael Buesch61e115a2007-09-18 15:12:50 -0400815}
816
Michael Bueschd625a292008-04-02 19:46:56 +0200817#ifdef CONFIG_SSB_BLOCKIO
818static void ssb_pci_block_read(struct ssb_device *dev, void *buffer,
819 size_t count, u16 offset, u8 reg_width)
820{
821 struct ssb_bus *bus = dev->bus;
822 void __iomem *addr = bus->mmio + offset;
823
824 if (unlikely(ssb_pci_assert_buspower(bus)))
825 goto error;
826 if (unlikely(bus->mapped_device != dev)) {
827 if (unlikely(ssb_pci_switch_core(bus, dev)))
828 goto error;
829 }
830 switch (reg_width) {
831 case sizeof(u8):
832 ioread8_rep(addr, buffer, count);
833 break;
834 case sizeof(u16):
835 SSB_WARN_ON(count & 1);
836 ioread16_rep(addr, buffer, count >> 1);
837 break;
838 case sizeof(u32):
839 SSB_WARN_ON(count & 3);
840 ioread32_rep(addr, buffer, count >> 2);
841 break;
842 default:
843 SSB_WARN_ON(1);
844 }
845
846 return;
847error:
848 memset(buffer, 0xFF, count);
849}
850#endif /* CONFIG_SSB_BLOCKIO */
851
Michael Bueschffc76892008-02-20 19:08:10 +0100852static void ssb_pci_write8(struct ssb_device *dev, u16 offset, u8 value)
853{
854 struct ssb_bus *bus = dev->bus;
855
856 if (unlikely(ssb_pci_assert_buspower(bus)))
857 return;
858 if (unlikely(bus->mapped_device != dev)) {
859 if (unlikely(ssb_pci_switch_core(bus, dev)))
860 return;
861 }
862 iowrite8(value, bus->mmio + offset);
863}
864
Michael Buesch61e115a2007-09-18 15:12:50 -0400865static void ssb_pci_write16(struct ssb_device *dev, u16 offset, u16 value)
866{
867 struct ssb_bus *bus = dev->bus;
868
869 if (unlikely(ssb_pci_assert_buspower(bus)))
870 return;
871 if (unlikely(bus->mapped_device != dev)) {
872 if (unlikely(ssb_pci_switch_core(bus, dev)))
873 return;
874 }
Michael Buesch4b402c62007-09-19 18:53:44 +0200875 iowrite16(value, bus->mmio + offset);
Michael Buesch61e115a2007-09-18 15:12:50 -0400876}
877
878static void ssb_pci_write32(struct ssb_device *dev, u16 offset, u32 value)
879{
880 struct ssb_bus *bus = dev->bus;
881
882 if (unlikely(ssb_pci_assert_buspower(bus)))
883 return;
884 if (unlikely(bus->mapped_device != dev)) {
885 if (unlikely(ssb_pci_switch_core(bus, dev)))
886 return;
887 }
Michael Buesch4b402c62007-09-19 18:53:44 +0200888 iowrite32(value, bus->mmio + offset);
Michael Buesch61e115a2007-09-18 15:12:50 -0400889}
890
Michael Bueschd625a292008-04-02 19:46:56 +0200891#ifdef CONFIG_SSB_BLOCKIO
892static void ssb_pci_block_write(struct ssb_device *dev, const void *buffer,
893 size_t count, u16 offset, u8 reg_width)
894{
895 struct ssb_bus *bus = dev->bus;
896 void __iomem *addr = bus->mmio + offset;
897
898 if (unlikely(ssb_pci_assert_buspower(bus)))
899 return;
900 if (unlikely(bus->mapped_device != dev)) {
901 if (unlikely(ssb_pci_switch_core(bus, dev)))
902 return;
903 }
904 switch (reg_width) {
905 case sizeof(u8):
906 iowrite8_rep(addr, buffer, count);
907 break;
908 case sizeof(u16):
909 SSB_WARN_ON(count & 1);
910 iowrite16_rep(addr, buffer, count >> 1);
911 break;
912 case sizeof(u32):
913 SSB_WARN_ON(count & 3);
914 iowrite32_rep(addr, buffer, count >> 2);
915 break;
916 default:
917 SSB_WARN_ON(1);
918 }
919}
920#endif /* CONFIG_SSB_BLOCKIO */
921
Michael Buesch61e115a2007-09-18 15:12:50 -0400922/* Not "static", as it's used in main.c */
923const struct ssb_bus_ops ssb_pci_ops = {
Michael Bueschffc76892008-02-20 19:08:10 +0100924 .read8 = ssb_pci_read8,
Michael Buesch61e115a2007-09-18 15:12:50 -0400925 .read16 = ssb_pci_read16,
926 .read32 = ssb_pci_read32,
Michael Bueschffc76892008-02-20 19:08:10 +0100927 .write8 = ssb_pci_write8,
Michael Buesch61e115a2007-09-18 15:12:50 -0400928 .write16 = ssb_pci_write16,
929 .write32 = ssb_pci_write32,
Michael Bueschd625a292008-04-02 19:46:56 +0200930#ifdef CONFIG_SSB_BLOCKIO
931 .block_read = ssb_pci_block_read,
932 .block_write = ssb_pci_block_write,
933#endif
Michael Buesch61e115a2007-09-18 15:12:50 -0400934};
935
Michael Buesch61e115a2007-09-18 15:12:50 -0400936static ssize_t ssb_pci_attr_sprom_show(struct device *pcidev,
937 struct device_attribute *attr,
938 char *buf)
939{
940 struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);
941 struct ssb_bus *bus;
Michael Buesch61e115a2007-09-18 15:12:50 -0400942
943 bus = ssb_pci_dev_to_bus(pdev);
944 if (!bus)
Michael Buesche7ec2e32008-03-10 17:26:32 +0100945 return -ENODEV;
Michael Buesch61e115a2007-09-18 15:12:50 -0400946
Michael Buesche7ec2e32008-03-10 17:26:32 +0100947 return ssb_attr_sprom_show(bus, buf, sprom_do_read);
Michael Buesch61e115a2007-09-18 15:12:50 -0400948}
949
950static ssize_t ssb_pci_attr_sprom_store(struct device *pcidev,
951 struct device_attribute *attr,
952 const char *buf, size_t count)
953{
954 struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);
955 struct ssb_bus *bus;
Michael Buesch61e115a2007-09-18 15:12:50 -0400956
957 bus = ssb_pci_dev_to_bus(pdev);
958 if (!bus)
Michael Buesche7ec2e32008-03-10 17:26:32 +0100959 return -ENODEV;
Michael Buesch61e115a2007-09-18 15:12:50 -0400960
Michael Buesche7ec2e32008-03-10 17:26:32 +0100961 return ssb_attr_sprom_store(bus, buf, count,
962 sprom_check_crc, sprom_do_write);
Michael Buesch61e115a2007-09-18 15:12:50 -0400963}
964
965static DEVICE_ATTR(ssb_sprom, 0600,
966 ssb_pci_attr_sprom_show,
967 ssb_pci_attr_sprom_store);
968
969void ssb_pci_exit(struct ssb_bus *bus)
970{
971 struct pci_dev *pdev;
972
973 if (bus->bustype != SSB_BUSTYPE_PCI)
974 return;
975
976 pdev = bus->host_pci;
977 device_remove_file(&pdev->dev, &dev_attr_ssb_sprom);
978}
979
980int ssb_pci_init(struct ssb_bus *bus)
981{
982 struct pci_dev *pdev;
983 int err;
984
985 if (bus->bustype != SSB_BUSTYPE_PCI)
986 return 0;
987
988 pdev = bus->host_pci;
Michael Buesche7ec2e32008-03-10 17:26:32 +0100989 mutex_init(&bus->sprom_mutex);
Michael Buesch61e115a2007-09-18 15:12:50 -0400990 err = device_create_file(&pdev->dev, &dev_attr_ssb_sprom);
991 if (err)
992 goto out;
993
994out:
995 return err;
996}