2 * Sonics Silicon Backplane PCI-Hostbus related functions.
4 * Copyright (C) 2005-2006 Michael Buesch <mb@bu3sch.de>
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>
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.
15 * Licensed under the GNU/GPL. See COPYING for details.
18 #include <linux/ssb/ssb.h>
19 #include <linux/ssb/ssb_regs.h>
20 #include <linux/pci.h>
21 #include <linux/delay.h>
23 #include "ssb_private.h"
26 /* Define the following to 1 to enable a printk on each coreswitch. */
27 #define SSB_VERBOSE_PCICORESWITCH_DEBUG 0
30 /* Lowlevel coreswitching */
31 int ssb_pci_switch_coreidx(struct ssb_bus *bus, u8 coreidx)
38 err = pci_write_config_dword(bus->host_pci, SSB_BAR0_WIN,
39 (coreidx * SSB_CORE_SIZE)
43 err = pci_read_config_dword(bus->host_pci, SSB_BAR0_WIN,
47 cur_core = (cur_core - SSB_ENUM_BASE)
49 if (cur_core == coreidx)
52 if (attempts++ > SSB_BAR0_MAX_RETRIES)
58 ssb_printk(KERN_ERR PFX "Failed to switch to core %u\n", coreidx);
62 int ssb_pci_switch_core(struct ssb_bus *bus,
63 struct ssb_device *dev)
68 #if SSB_VERBOSE_PCICORESWITCH_DEBUG
69 ssb_printk(KERN_INFO PFX
70 "Switching to %s core, index %d\n",
71 ssb_core_name(dev->id.coreid),
75 spin_lock_irqsave(&bus->bar_lock, flags);
76 err = ssb_pci_switch_coreidx(bus, dev->core_index);
78 bus->mapped_device = dev;
79 spin_unlock_irqrestore(&bus->bar_lock, flags);
84 /* Enable/disable the on board crystal oscillator and/or PLL. */
85 int ssb_pci_xtal(struct ssb_bus *bus, u32 what, int turn_on)
88 u32 in, out, outenable;
91 if (bus->bustype != SSB_BUSTYPE_PCI)
94 err = pci_read_config_dword(bus->host_pci, SSB_GPIO_IN, &in);
97 err = pci_read_config_dword(bus->host_pci, SSB_GPIO_OUT, &out);
100 err = pci_read_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE, &outenable);
107 /* Avoid glitching the clock if GPRS is already using it.
108 * We can't actually read the state of the PLLPD so we infer it
109 * by the value of XTAL_PU which *is* readable via gpioin.
111 if (!(in & SSB_GPIO_XTAL)) {
112 if (what & SSB_GPIO_XTAL) {
113 /* Turn the crystal on */
114 out |= SSB_GPIO_XTAL;
115 if (what & SSB_GPIO_PLL)
117 err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out);
120 err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE,
126 if (what & SSB_GPIO_PLL) {
127 /* Turn the PLL on */
128 out &= ~SSB_GPIO_PLL;
129 err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out);
136 err = pci_read_config_word(bus->host_pci, PCI_STATUS, &pci_status);
139 pci_status &= ~PCI_STATUS_SIG_TARGET_ABORT;
140 err = pci_write_config_word(bus->host_pci, PCI_STATUS, pci_status);
144 if (what & SSB_GPIO_XTAL) {
145 /* Turn the crystal off */
146 out &= ~SSB_GPIO_XTAL;
148 if (what & SSB_GPIO_PLL) {
149 /* Turn the PLL off */
152 err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out);
155 err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE, outenable);
164 printk(KERN_ERR PFX "Error: ssb_pci_xtal() could not access PCI config space!\n");
169 /* Get the word-offset for a SSB_SPROM_XXX define. */
170 #define SPOFF(offset) (((offset) - SSB_SPROM_BASE) / sizeof(u16))
171 /* Helper to extract some _offset, which is one of the SSB_SPROM_XXX defines. */
172 #define SPEX(_outvar, _offset, _mask, _shift) \
173 out->_outvar = ((in[SPOFF(_offset)] & (_mask)) >> (_shift))
175 static inline u8 ssb_crc8(u8 crc, u8 data)
177 /* Polynomial: x^8 + x^7 + x^6 + x^4 + x^2 + 1 */
178 static const u8 t[] = {
179 0x00, 0xF7, 0xB9, 0x4E, 0x25, 0xD2, 0x9C, 0x6B,
180 0x4A, 0xBD, 0xF3, 0x04, 0x6F, 0x98, 0xD6, 0x21,
181 0x94, 0x63, 0x2D, 0xDA, 0xB1, 0x46, 0x08, 0xFF,
182 0xDE, 0x29, 0x67, 0x90, 0xFB, 0x0C, 0x42, 0xB5,
183 0x7F, 0x88, 0xC6, 0x31, 0x5A, 0xAD, 0xE3, 0x14,
184 0x35, 0xC2, 0x8C, 0x7B, 0x10, 0xE7, 0xA9, 0x5E,
185 0xEB, 0x1C, 0x52, 0xA5, 0xCE, 0x39, 0x77, 0x80,
186 0xA1, 0x56, 0x18, 0xEF, 0x84, 0x73, 0x3D, 0xCA,
187 0xFE, 0x09, 0x47, 0xB0, 0xDB, 0x2C, 0x62, 0x95,
188 0xB4, 0x43, 0x0D, 0xFA, 0x91, 0x66, 0x28, 0xDF,
189 0x6A, 0x9D, 0xD3, 0x24, 0x4F, 0xB8, 0xF6, 0x01,
190 0x20, 0xD7, 0x99, 0x6E, 0x05, 0xF2, 0xBC, 0x4B,
191 0x81, 0x76, 0x38, 0xCF, 0xA4, 0x53, 0x1D, 0xEA,
192 0xCB, 0x3C, 0x72, 0x85, 0xEE, 0x19, 0x57, 0xA0,
193 0x15, 0xE2, 0xAC, 0x5B, 0x30, 0xC7, 0x89, 0x7E,
194 0x5F, 0xA8, 0xE6, 0x11, 0x7A, 0x8D, 0xC3, 0x34,
195 0xAB, 0x5C, 0x12, 0xE5, 0x8E, 0x79, 0x37, 0xC0,
196 0xE1, 0x16, 0x58, 0xAF, 0xC4, 0x33, 0x7D, 0x8A,
197 0x3F, 0xC8, 0x86, 0x71, 0x1A, 0xED, 0xA3, 0x54,
198 0x75, 0x82, 0xCC, 0x3B, 0x50, 0xA7, 0xE9, 0x1E,
199 0xD4, 0x23, 0x6D, 0x9A, 0xF1, 0x06, 0x48, 0xBF,
200 0x9E, 0x69, 0x27, 0xD0, 0xBB, 0x4C, 0x02, 0xF5,
201 0x40, 0xB7, 0xF9, 0x0E, 0x65, 0x92, 0xDC, 0x2B,
202 0x0A, 0xFD, 0xB3, 0x44, 0x2F, 0xD8, 0x96, 0x61,
203 0x55, 0xA2, 0xEC, 0x1B, 0x70, 0x87, 0xC9, 0x3E,
204 0x1F, 0xE8, 0xA6, 0x51, 0x3A, 0xCD, 0x83, 0x74,
205 0xC1, 0x36, 0x78, 0x8F, 0xE4, 0x13, 0x5D, 0xAA,
206 0x8B, 0x7C, 0x32, 0xC5, 0xAE, 0x59, 0x17, 0xE0,
207 0x2A, 0xDD, 0x93, 0x64, 0x0F, 0xF8, 0xB6, 0x41,
208 0x60, 0x97, 0xD9, 0x2E, 0x45, 0xB2, 0xFC, 0x0B,
209 0xBE, 0x49, 0x07, 0xF0, 0x9B, 0x6C, 0x22, 0xD5,
210 0xF4, 0x03, 0x4D, 0xBA, 0xD1, 0x26, 0x68, 0x9F,
212 return t[crc ^ data];
215 static u8 ssb_sprom_crc(const u16 *sprom, u16 size)
220 for (word = 0; word < size - 1; word++) {
221 crc = ssb_crc8(crc, sprom[word] & 0x00FF);
222 crc = ssb_crc8(crc, (sprom[word] & 0xFF00) >> 8);
224 crc = ssb_crc8(crc, sprom[size - 1] & 0x00FF);
230 static int sprom_check_crc(const u16 *sprom, size_t size)
236 crc = ssb_sprom_crc(sprom, size);
237 tmp = sprom[size - 1] & SSB_SPROM_REVISION_CRC;
238 expected_crc = tmp >> SSB_SPROM_REVISION_CRC_SHIFT;
239 if (crc != expected_crc)
245 static int sprom_do_read(struct ssb_bus *bus, u16 *sprom)
249 for (i = 0; i < bus->sprom_size; i++)
250 sprom[i] = ioread16(bus->mmio + SSB_SPROM_BASE + (i * 2));
255 static int sprom_do_write(struct ssb_bus *bus, const u16 *sprom)
257 struct pci_dev *pdev = bus->host_pci;
260 u16 size = bus->sprom_size;
262 ssb_printk(KERN_NOTICE PFX "Writing SPROM. Do NOT turn off the power! Please stand by...\n");
263 err = pci_read_config_dword(pdev, SSB_SPROMCTL, &spromctl);
266 spromctl |= SSB_SPROMCTL_WE;
267 err = pci_write_config_dword(pdev, SSB_SPROMCTL, spromctl);
270 ssb_printk(KERN_NOTICE PFX "[ 0%%");
272 for (i = 0; i < size; i++) {
275 else if (i == size / 2)
277 else if (i == (size * 3) / 4)
281 writew(sprom[i], bus->mmio + SSB_SPROM_BASE + (i * 2));
285 err = pci_read_config_dword(pdev, SSB_SPROMCTL, &spromctl);
288 spromctl &= ~SSB_SPROMCTL_WE;
289 err = pci_write_config_dword(pdev, SSB_SPROMCTL, spromctl);
293 ssb_printk("100%% ]\n");
294 ssb_printk(KERN_NOTICE PFX "SPROM written.\n");
298 ssb_printk(KERN_ERR PFX "Could not access SPROM control register.\n");
302 static s8 r123_extract_antgain(u8 sprom_revision, const u16 *in,
308 v = in[SPOFF(SSB_SPROM1_AGAIN)];
309 gain = (v & mask) >> shift;
311 gain = 2; /* If unset use 2dBm */
312 if (sprom_revision == 1) {
313 /* Convert to Q5.2 */
316 /* Q5.2 Fractional part is stored in 0xC0 */
317 gain = ((gain & 0xC0) >> 6) | ((gain & 0x3F) << 2);
323 static void sprom_extract_r123(struct ssb_sprom *out, const u16 *in)
330 if (out->revision == 3) { /* rev 3 moved MAC */
331 loc[0] = SSB_SPROM3_IL0MAC;
332 loc[1] = SSB_SPROM3_ET0MAC;
333 loc[2] = SSB_SPROM3_ET1MAC;
335 loc[0] = SSB_SPROM1_IL0MAC;
336 loc[1] = SSB_SPROM1_ET0MAC;
337 loc[2] = SSB_SPROM1_ET1MAC;
339 for (i = 0; i < 3; i++) {
340 v = in[SPOFF(loc[0]) + i];
341 *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
343 for (i = 0; i < 3; i++) {
344 v = in[SPOFF(loc[1]) + i];
345 *(((__be16 *)out->et0mac) + i) = cpu_to_be16(v);
347 for (i = 0; i < 3; i++) {
348 v = in[SPOFF(loc[2]) + i];
349 *(((__be16 *)out->et1mac) + i) = cpu_to_be16(v);
351 SPEX(et0phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0A, 0);
352 SPEX(et1phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1A,
353 SSB_SPROM1_ETHPHY_ET1A_SHIFT);
354 SPEX(et0mdcport, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0M, 14);
355 SPEX(et1mdcport, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1M, 15);
356 SPEX(board_rev, SSB_SPROM1_BINF, SSB_SPROM1_BINF_BREV, 0);
357 SPEX(country_code, SSB_SPROM1_BINF, SSB_SPROM1_BINF_CCODE,
358 SSB_SPROM1_BINF_CCODE_SHIFT);
359 SPEX(ant_available_a, SSB_SPROM1_BINF, SSB_SPROM1_BINF_ANTA,
360 SSB_SPROM1_BINF_ANTA_SHIFT);
361 SPEX(ant_available_bg, SSB_SPROM1_BINF, SSB_SPROM1_BINF_ANTBG,
362 SSB_SPROM1_BINF_ANTBG_SHIFT);
363 SPEX(pa0b0, SSB_SPROM1_PA0B0, 0xFFFF, 0);
364 SPEX(pa0b1, SSB_SPROM1_PA0B1, 0xFFFF, 0);
365 SPEX(pa0b2, SSB_SPROM1_PA0B2, 0xFFFF, 0);
366 SPEX(pa1b0, SSB_SPROM1_PA1B0, 0xFFFF, 0);
367 SPEX(pa1b1, SSB_SPROM1_PA1B1, 0xFFFF, 0);
368 SPEX(pa1b2, SSB_SPROM1_PA1B2, 0xFFFF, 0);
369 SPEX(gpio0, SSB_SPROM1_GPIOA, SSB_SPROM1_GPIOA_P0, 0);
370 SPEX(gpio1, SSB_SPROM1_GPIOA, SSB_SPROM1_GPIOA_P1,
371 SSB_SPROM1_GPIOA_P1_SHIFT);
372 SPEX(gpio2, SSB_SPROM1_GPIOB, SSB_SPROM1_GPIOB_P2, 0);
373 SPEX(gpio3, SSB_SPROM1_GPIOB, SSB_SPROM1_GPIOB_P3,
374 SSB_SPROM1_GPIOB_P3_SHIFT);
375 SPEX(maxpwr_a, SSB_SPROM1_MAXPWR, SSB_SPROM1_MAXPWR_A,
376 SSB_SPROM1_MAXPWR_A_SHIFT);
377 SPEX(maxpwr_bg, SSB_SPROM1_MAXPWR, SSB_SPROM1_MAXPWR_BG, 0);
378 SPEX(itssi_a, SSB_SPROM1_ITSSI, SSB_SPROM1_ITSSI_A,
379 SSB_SPROM1_ITSSI_A_SHIFT);
380 SPEX(itssi_bg, SSB_SPROM1_ITSSI, SSB_SPROM1_ITSSI_BG, 0);
381 SPEX(boardflags_lo, SSB_SPROM1_BFLLO, 0xFFFF, 0);
382 if (out->revision >= 2)
383 SPEX(boardflags_hi, SSB_SPROM2_BFLHI, 0xFFFF, 0);
385 /* Extract the antenna gain values. */
386 gain = r123_extract_antgain(out->revision, in,
388 SSB_SPROM1_AGAIN_BG_SHIFT);
389 out->antenna_gain.ghz24.a0 = gain;
390 out->antenna_gain.ghz24.a1 = gain;
391 out->antenna_gain.ghz24.a2 = gain;
392 out->antenna_gain.ghz24.a3 = gain;
393 gain = r123_extract_antgain(out->revision, in,
395 SSB_SPROM1_AGAIN_A_SHIFT);
396 out->antenna_gain.ghz5.a0 = gain;
397 out->antenna_gain.ghz5.a1 = gain;
398 out->antenna_gain.ghz5.a2 = gain;
399 out->antenna_gain.ghz5.a3 = gain;
402 static void sprom_extract_r4(struct ssb_sprom *out, const u16 *in)
407 /* extract the equivalent of the r1 variables */
408 for (i = 0; i < 3; i++) {
409 v = in[SPOFF(SSB_SPROM4_IL0MAC) + i];
410 *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
412 for (i = 0; i < 3; i++) {
413 v = in[SPOFF(SSB_SPROM4_ET0MAC) + i];
414 *(((__be16 *)out->et0mac) + i) = cpu_to_be16(v);
416 for (i = 0; i < 3; i++) {
417 v = in[SPOFF(SSB_SPROM4_ET1MAC) + i];
418 *(((__be16 *)out->et1mac) + i) = cpu_to_be16(v);
420 SPEX(et0phyaddr, SSB_SPROM4_ETHPHY, SSB_SPROM4_ETHPHY_ET0A, 0);
421 SPEX(et1phyaddr, SSB_SPROM4_ETHPHY, SSB_SPROM4_ETHPHY_ET1A,
422 SSB_SPROM4_ETHPHY_ET1A_SHIFT);
423 SPEX(country_code, SSB_SPROM4_CCODE, 0xFFFF, 0);
424 SPEX(boardflags_lo, SSB_SPROM4_BFLLO, 0xFFFF, 0);
425 SPEX(boardflags_hi, SSB_SPROM4_BFLHI, 0xFFFF, 0);
426 SPEX(ant_available_a, SSB_SPROM4_ANTAVAIL, SSB_SPROM4_ANTAVAIL_A,
427 SSB_SPROM4_ANTAVAIL_A_SHIFT);
428 SPEX(ant_available_bg, SSB_SPROM4_ANTAVAIL, SSB_SPROM4_ANTAVAIL_BG,
429 SSB_SPROM4_ANTAVAIL_BG_SHIFT);
430 SPEX(maxpwr_bg, SSB_SPROM4_MAXP_BG, SSB_SPROM4_MAXP_BG_MASK, 0);
431 SPEX(itssi_bg, SSB_SPROM4_MAXP_BG, SSB_SPROM4_ITSSI_BG,
432 SSB_SPROM4_ITSSI_BG_SHIFT);
433 SPEX(maxpwr_a, SSB_SPROM4_MAXP_A, SSB_SPROM4_MAXP_A_MASK, 0);
434 SPEX(itssi_a, SSB_SPROM4_MAXP_A, SSB_SPROM4_ITSSI_A,
435 SSB_SPROM4_ITSSI_A_SHIFT);
436 SPEX(gpio0, SSB_SPROM4_GPIOA, SSB_SPROM4_GPIOA_P0, 0);
437 SPEX(gpio1, SSB_SPROM4_GPIOA, SSB_SPROM4_GPIOA_P1,
438 SSB_SPROM4_GPIOA_P1_SHIFT);
439 SPEX(gpio2, SSB_SPROM4_GPIOB, SSB_SPROM4_GPIOB_P2, 0);
440 SPEX(gpio3, SSB_SPROM4_GPIOB, SSB_SPROM4_GPIOB_P3,
441 SSB_SPROM4_GPIOB_P3_SHIFT);
443 /* Extract the antenna gain values. */
444 SPEX(antenna_gain.ghz24.a0, SSB_SPROM4_AGAIN01,
445 SSB_SPROM4_AGAIN0, SSB_SPROM4_AGAIN0_SHIFT);
446 SPEX(antenna_gain.ghz24.a1, SSB_SPROM4_AGAIN01,
447 SSB_SPROM4_AGAIN1, SSB_SPROM4_AGAIN1_SHIFT);
448 SPEX(antenna_gain.ghz24.a2, SSB_SPROM4_AGAIN23,
449 SSB_SPROM4_AGAIN2, SSB_SPROM4_AGAIN2_SHIFT);
450 SPEX(antenna_gain.ghz24.a3, SSB_SPROM4_AGAIN23,
451 SSB_SPROM4_AGAIN3, SSB_SPROM4_AGAIN3_SHIFT);
452 memcpy(&out->antenna_gain.ghz5, &out->antenna_gain.ghz24,
453 sizeof(out->antenna_gain.ghz5));
455 /* TODO - get remaining rev 4 stuff needed */
458 static int sprom_extract(struct ssb_bus *bus, struct ssb_sprom *out,
459 const u16 *in, u16 size)
461 memset(out, 0, sizeof(*out));
463 out->revision = in[size - 1] & 0x00FF;
464 ssb_dprintk(KERN_DEBUG PFX "SPROM revision %d detected.\n", out->revision);
465 if ((bus->chip_id & 0xFF00) == 0x4400) {
466 /* Workaround: The BCM44XX chip has a stupid revision
467 * number stored in the SPROM.
468 * Always extract r1. */
470 sprom_extract_r123(out, in);
471 } else if (bus->chip_id == 0x4321) {
472 /* the BCM4328 has a chipid == 0x4321 and a rev 4 SPROM */
474 sprom_extract_r4(out, in);
476 if (out->revision == 0)
478 if (out->revision >= 1 && out->revision <= 3) {
479 sprom_extract_r123(out, in);
481 if (out->revision == 4)
482 sprom_extract_r4(out, in);
483 if (out->revision >= 5)
487 if (out->boardflags_lo == 0xFFFF)
488 out->boardflags_lo = 0; /* per specs */
489 if (out->boardflags_hi == 0xFFFF)
490 out->boardflags_hi = 0; /* per specs */
494 ssb_printk(KERN_WARNING PFX "Unsupported SPROM revision %d "
495 "detected. Will extract v1\n", out->revision);
496 sprom_extract_r123(out, in);
500 static int ssb_pci_sprom_get(struct ssb_bus *bus,
501 struct ssb_sprom *sprom)
506 buf = kcalloc(SSB_SPROMSIZE_WORDS_R123, sizeof(u16), GFP_KERNEL);
509 bus->sprom_size = SSB_SPROMSIZE_WORDS_R123;
510 sprom_do_read(bus, buf);
511 err = sprom_check_crc(buf, bus->sprom_size);
513 /* try for a 440 byte SPROM - revision 4 and higher */
515 buf = kcalloc(SSB_SPROMSIZE_WORDS_R4, sizeof(u16),
519 bus->sprom_size = SSB_SPROMSIZE_WORDS_R4;
520 sprom_do_read(bus, buf);
521 err = sprom_check_crc(buf, bus->sprom_size);
523 ssb_printk(KERN_WARNING PFX "WARNING: Invalid"
524 " SPROM CRC (corrupt SPROM)\n");
526 err = sprom_extract(bus, sprom, buf, bus->sprom_size);
533 static void ssb_pci_get_boardinfo(struct ssb_bus *bus,
534 struct ssb_boardinfo *bi)
536 pci_read_config_word(bus->host_pci, PCI_SUBSYSTEM_VENDOR_ID,
538 pci_read_config_word(bus->host_pci, PCI_SUBSYSTEM_ID,
540 pci_read_config_word(bus->host_pci, PCI_REVISION_ID,
544 int ssb_pci_get_invariants(struct ssb_bus *bus,
545 struct ssb_init_invariants *iv)
549 err = ssb_pci_sprom_get(bus, &iv->sprom);
552 ssb_pci_get_boardinfo(bus, &iv->boardinfo);
558 #ifdef CONFIG_SSB_DEBUG
559 static int ssb_pci_assert_buspower(struct ssb_bus *bus)
561 if (likely(bus->powered_up))
564 printk(KERN_ERR PFX "FATAL ERROR: Bus powered down "
565 "while accessing PCI MMIO space\n");
566 if (bus->power_warn_count <= 10) {
567 bus->power_warn_count++;
574 static inline int ssb_pci_assert_buspower(struct ssb_bus *bus)
580 static u8 ssb_pci_read8(struct ssb_device *dev, u16 offset)
582 struct ssb_bus *bus = dev->bus;
584 if (unlikely(ssb_pci_assert_buspower(bus)))
586 if (unlikely(bus->mapped_device != dev)) {
587 if (unlikely(ssb_pci_switch_core(bus, dev)))
590 return ioread8(bus->mmio + offset);
593 static u16 ssb_pci_read16(struct ssb_device *dev, u16 offset)
595 struct ssb_bus *bus = dev->bus;
597 if (unlikely(ssb_pci_assert_buspower(bus)))
599 if (unlikely(bus->mapped_device != dev)) {
600 if (unlikely(ssb_pci_switch_core(bus, dev)))
603 return ioread16(bus->mmio + offset);
606 static u32 ssb_pci_read32(struct ssb_device *dev, u16 offset)
608 struct ssb_bus *bus = dev->bus;
610 if (unlikely(ssb_pci_assert_buspower(bus)))
612 if (unlikely(bus->mapped_device != dev)) {
613 if (unlikely(ssb_pci_switch_core(bus, dev)))
616 return ioread32(bus->mmio + offset);
619 #ifdef CONFIG_SSB_BLOCKIO
620 static void ssb_pci_block_read(struct ssb_device *dev, void *buffer,
621 size_t count, u16 offset, u8 reg_width)
623 struct ssb_bus *bus = dev->bus;
624 void __iomem *addr = bus->mmio + offset;
626 if (unlikely(ssb_pci_assert_buspower(bus)))
628 if (unlikely(bus->mapped_device != dev)) {
629 if (unlikely(ssb_pci_switch_core(bus, dev)))
634 ioread8_rep(addr, buffer, count);
637 SSB_WARN_ON(count & 1);
638 ioread16_rep(addr, buffer, count >> 1);
641 SSB_WARN_ON(count & 3);
642 ioread32_rep(addr, buffer, count >> 2);
650 memset(buffer, 0xFF, count);
652 #endif /* CONFIG_SSB_BLOCKIO */
654 static void ssb_pci_write8(struct ssb_device *dev, u16 offset, u8 value)
656 struct ssb_bus *bus = dev->bus;
658 if (unlikely(ssb_pci_assert_buspower(bus)))
660 if (unlikely(bus->mapped_device != dev)) {
661 if (unlikely(ssb_pci_switch_core(bus, dev)))
664 iowrite8(value, bus->mmio + offset);
667 static void ssb_pci_write16(struct ssb_device *dev, u16 offset, u16 value)
669 struct ssb_bus *bus = dev->bus;
671 if (unlikely(ssb_pci_assert_buspower(bus)))
673 if (unlikely(bus->mapped_device != dev)) {
674 if (unlikely(ssb_pci_switch_core(bus, dev)))
677 iowrite16(value, bus->mmio + offset);
680 static void ssb_pci_write32(struct ssb_device *dev, u16 offset, u32 value)
682 struct ssb_bus *bus = dev->bus;
684 if (unlikely(ssb_pci_assert_buspower(bus)))
686 if (unlikely(bus->mapped_device != dev)) {
687 if (unlikely(ssb_pci_switch_core(bus, dev)))
690 iowrite32(value, bus->mmio + offset);
693 #ifdef CONFIG_SSB_BLOCKIO
694 static void ssb_pci_block_write(struct ssb_device *dev, const void *buffer,
695 size_t count, u16 offset, u8 reg_width)
697 struct ssb_bus *bus = dev->bus;
698 void __iomem *addr = bus->mmio + offset;
700 if (unlikely(ssb_pci_assert_buspower(bus)))
702 if (unlikely(bus->mapped_device != dev)) {
703 if (unlikely(ssb_pci_switch_core(bus, dev)))
708 iowrite8_rep(addr, buffer, count);
711 SSB_WARN_ON(count & 1);
712 iowrite16_rep(addr, buffer, count >> 1);
715 SSB_WARN_ON(count & 3);
716 iowrite32_rep(addr, buffer, count >> 2);
722 #endif /* CONFIG_SSB_BLOCKIO */
724 /* Not "static", as it's used in main.c */
725 const struct ssb_bus_ops ssb_pci_ops = {
726 .read8 = ssb_pci_read8,
727 .read16 = ssb_pci_read16,
728 .read32 = ssb_pci_read32,
729 .write8 = ssb_pci_write8,
730 .write16 = ssb_pci_write16,
731 .write32 = ssb_pci_write32,
732 #ifdef CONFIG_SSB_BLOCKIO
733 .block_read = ssb_pci_block_read,
734 .block_write = ssb_pci_block_write,
738 static ssize_t ssb_pci_attr_sprom_show(struct device *pcidev,
739 struct device_attribute *attr,
742 struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);
745 bus = ssb_pci_dev_to_bus(pdev);
749 return ssb_attr_sprom_show(bus, buf, sprom_do_read);
752 static ssize_t ssb_pci_attr_sprom_store(struct device *pcidev,
753 struct device_attribute *attr,
754 const char *buf, size_t count)
756 struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);
759 bus = ssb_pci_dev_to_bus(pdev);
763 return ssb_attr_sprom_store(bus, buf, count,
764 sprom_check_crc, sprom_do_write);
767 static DEVICE_ATTR(ssb_sprom, 0600,
768 ssb_pci_attr_sprom_show,
769 ssb_pci_attr_sprom_store);
771 void ssb_pci_exit(struct ssb_bus *bus)
773 struct pci_dev *pdev;
775 if (bus->bustype != SSB_BUSTYPE_PCI)
778 pdev = bus->host_pci;
779 device_remove_file(&pdev->dev, &dev_attr_ssb_sprom);
782 int ssb_pci_init(struct ssb_bus *bus)
784 struct pci_dev *pdev;
787 if (bus->bustype != SSB_BUSTYPE_PCI)
790 pdev = bus->host_pci;
791 mutex_init(&bus->sprom_mutex);
792 err = device_create_file(&pdev->dev, &dev_attr_ssb_sprom);