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61e115a5 MB |
1 | /* |
2 | * Sonics Silicon Backplane PCI-Hostbus related functions. | |
3 | * | |
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> | |
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/pci.h> | |
21 | #include <linux/delay.h> | |
22 | ||
23 | #include "ssb_private.h" | |
24 | ||
25 | ||
26 | /* Define the following to 1 to enable a printk on each coreswitch. */ | |
27 | #define SSB_VERBOSE_PCICORESWITCH_DEBUG 0 | |
28 | ||
29 | ||
30 | /* Lowlevel coreswitching */ | |
31 | int ssb_pci_switch_coreidx(struct ssb_bus *bus, u8 coreidx) | |
32 | { | |
33 | int err; | |
34 | int attempts = 0; | |
35 | u32 cur_core; | |
36 | ||
37 | while (1) { | |
38 | err = pci_write_config_dword(bus->host_pci, SSB_BAR0_WIN, | |
39 | (coreidx * SSB_CORE_SIZE) | |
40 | + SSB_ENUM_BASE); | |
41 | if (err) | |
42 | goto error; | |
43 | err = pci_read_config_dword(bus->host_pci, SSB_BAR0_WIN, | |
44 | &cur_core); | |
45 | if (err) | |
46 | goto error; | |
47 | cur_core = (cur_core - SSB_ENUM_BASE) | |
48 | / SSB_CORE_SIZE; | |
49 | if (cur_core == coreidx) | |
50 | break; | |
51 | ||
52 | if (attempts++ > SSB_BAR0_MAX_RETRIES) | |
53 | goto error; | |
54 | udelay(10); | |
55 | } | |
56 | return 0; | |
57 | error: | |
58 | ssb_printk(KERN_ERR PFX "Failed to switch to core %u\n", coreidx); | |
59 | return -ENODEV; | |
60 | } | |
61 | ||
62 | int ssb_pci_switch_core(struct ssb_bus *bus, | |
63 | struct ssb_device *dev) | |
64 | { | |
65 | int err; | |
66 | unsigned long flags; | |
67 | ||
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), | |
72 | dev->core_index); | |
73 | #endif | |
74 | ||
75 | spin_lock_irqsave(&bus->bar_lock, flags); | |
76 | err = ssb_pci_switch_coreidx(bus, dev->core_index); | |
77 | if (!err) | |
78 | bus->mapped_device = dev; | |
79 | spin_unlock_irqrestore(&bus->bar_lock, flags); | |
80 | ||
81 | return err; | |
82 | } | |
83 | ||
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) | |
86 | { | |
87 | int err; | |
88 | u32 in, out, outenable; | |
89 | u16 pci_status; | |
90 | ||
91 | if (bus->bustype != SSB_BUSTYPE_PCI) | |
92 | return 0; | |
93 | ||
94 | err = pci_read_config_dword(bus->host_pci, SSB_GPIO_IN, &in); | |
95 | if (err) | |
96 | goto err_pci; | |
97 | err = pci_read_config_dword(bus->host_pci, SSB_GPIO_OUT, &out); | |
98 | if (err) | |
99 | goto err_pci; | |
100 | err = pci_read_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE, &outenable); | |
101 | if (err) | |
102 | goto err_pci; | |
103 | ||
104 | outenable |= what; | |
105 | ||
106 | if (turn_on) { | |
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. | |
110 | */ | |
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) | |
116 | out |= SSB_GPIO_PLL; | |
117 | err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out); | |
118 | if (err) | |
119 | goto err_pci; | |
120 | err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE, | |
121 | outenable); | |
122 | if (err) | |
123 | goto err_pci; | |
124 | msleep(1); | |
125 | } | |
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); | |
130 | if (err) | |
131 | goto err_pci; | |
132 | msleep(5); | |
133 | } | |
134 | } | |
135 | ||
136 | err = pci_read_config_word(bus->host_pci, PCI_STATUS, &pci_status); | |
137 | if (err) | |
138 | goto err_pci; | |
139 | pci_status &= ~PCI_STATUS_SIG_TARGET_ABORT; | |
140 | err = pci_write_config_word(bus->host_pci, PCI_STATUS, pci_status); | |
141 | if (err) | |
142 | goto err_pci; | |
143 | } else { | |
144 | if (what & SSB_GPIO_XTAL) { | |
145 | /* Turn the crystal off */ | |
146 | out &= ~SSB_GPIO_XTAL; | |
147 | } | |
148 | if (what & SSB_GPIO_PLL) { | |
149 | /* Turn the PLL off */ | |
150 | out |= SSB_GPIO_PLL; | |
151 | } | |
152 | err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out); | |
153 | if (err) | |
154 | goto err_pci; | |
155 | err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT_ENABLE, outenable); | |
156 | if (err) | |
157 | goto err_pci; | |
158 | } | |
159 | ||
160 | out: | |
161 | return err; | |
162 | ||
163 | err_pci: | |
164 | printk(KERN_ERR PFX "Error: ssb_pci_xtal() could not access PCI config space!\n"); | |
165 | err = -EBUSY; | |
166 | goto out; | |
167 | } | |
168 | ||
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)) | |
174 | ||
175 | static inline u8 ssb_crc8(u8 crc, u8 data) | |
176 | { | |
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, | |
211 | }; | |
212 | return t[crc ^ data]; | |
213 | } | |
214 | ||
215 | static u8 ssb_sprom_crc(const u16 *sprom) | |
216 | { | |
217 | int word; | |
218 | u8 crc = 0xFF; | |
219 | ||
220 | for (word = 0; word < SSB_SPROMSIZE_WORDS - 1; word++) { | |
221 | crc = ssb_crc8(crc, sprom[word] & 0x00FF); | |
222 | crc = ssb_crc8(crc, (sprom[word] & 0xFF00) >> 8); | |
223 | } | |
224 | crc = ssb_crc8(crc, sprom[SPOFF(SSB_SPROM_REVISION)] & 0x00FF); | |
225 | crc ^= 0xFF; | |
226 | ||
227 | return crc; | |
228 | } | |
229 | ||
230 | static int sprom_check_crc(const u16 *sprom) | |
231 | { | |
232 | u8 crc; | |
233 | u8 expected_crc; | |
234 | u16 tmp; | |
235 | ||
236 | crc = ssb_sprom_crc(sprom); | |
237 | tmp = sprom[SPOFF(SSB_SPROM_REVISION)] & SSB_SPROM_REVISION_CRC; | |
238 | expected_crc = tmp >> SSB_SPROM_REVISION_CRC_SHIFT; | |
239 | if (crc != expected_crc) | |
240 | return -EPROTO; | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
245 | static void sprom_do_read(struct ssb_bus *bus, u16 *sprom) | |
246 | { | |
247 | int i; | |
248 | ||
249 | for (i = 0; i < SSB_SPROMSIZE_WORDS; i++) | |
250 | sprom[i] = readw(bus->mmio + SSB_SPROM_BASE + (i * 2)); | |
251 | } | |
252 | ||
253 | static int sprom_do_write(struct ssb_bus *bus, const u16 *sprom) | |
254 | { | |
255 | struct pci_dev *pdev = bus->host_pci; | |
256 | int i, err; | |
257 | u32 spromctl; | |
258 | ||
259 | ssb_printk(KERN_NOTICE PFX "Writing SPROM. Do NOT turn off the power! Please stand by...\n"); | |
260 | err = pci_read_config_dword(pdev, SSB_SPROMCTL, &spromctl); | |
261 | if (err) | |
262 | goto err_ctlreg; | |
263 | spromctl |= SSB_SPROMCTL_WE; | |
264 | err = pci_write_config_dword(pdev, SSB_SPROMCTL, spromctl); | |
265 | if (err) | |
266 | goto err_ctlreg; | |
267 | ssb_printk(KERN_NOTICE PFX "[ 0%%"); | |
268 | msleep(500); | |
269 | for (i = 0; i < SSB_SPROMSIZE_WORDS; i++) { | |
270 | if (i == SSB_SPROMSIZE_WORDS / 4) | |
271 | ssb_printk("25%%"); | |
272 | else if (i == SSB_SPROMSIZE_WORDS / 2) | |
273 | ssb_printk("50%%"); | |
274 | else if (i == (SSB_SPROMSIZE_WORDS / 4) * 3) | |
275 | ssb_printk("75%%"); | |
276 | else if (i % 2) | |
277 | ssb_printk("."); | |
278 | writew(sprom[i], bus->mmio + SSB_SPROM_BASE + (i * 2)); | |
279 | mmiowb(); | |
280 | msleep(20); | |
281 | } | |
282 | err = pci_read_config_dword(pdev, SSB_SPROMCTL, &spromctl); | |
283 | if (err) | |
284 | goto err_ctlreg; | |
285 | spromctl &= ~SSB_SPROMCTL_WE; | |
286 | err = pci_write_config_dword(pdev, SSB_SPROMCTL, spromctl); | |
287 | if (err) | |
288 | goto err_ctlreg; | |
289 | msleep(500); | |
290 | ssb_printk("100%% ]\n"); | |
291 | ssb_printk(KERN_NOTICE PFX "SPROM written.\n"); | |
292 | ||
293 | return 0; | |
294 | err_ctlreg: | |
295 | ssb_printk(KERN_ERR PFX "Could not access SPROM control register.\n"); | |
296 | return err; | |
297 | } | |
298 | ||
299 | static void sprom_extract_r1(struct ssb_sprom_r1 *out, const u16 *in) | |
300 | { | |
301 | int i; | |
302 | u16 v; | |
303 | ||
304 | SPEX(pci_spid, SSB_SPROM1_SPID, 0xFFFF, 0); | |
305 | SPEX(pci_svid, SSB_SPROM1_SVID, 0xFFFF, 0); | |
306 | SPEX(pci_pid, SSB_SPROM1_PID, 0xFFFF, 0); | |
307 | for (i = 0; i < 3; i++) { | |
308 | v = in[SPOFF(SSB_SPROM1_IL0MAC) + i]; | |
6b9bafec | 309 | *(((__be16 *)out->il0mac) + i) = cpu_to_be16(v); |
61e115a5 MB |
310 | } |
311 | for (i = 0; i < 3; i++) { | |
312 | v = in[SPOFF(SSB_SPROM1_ET0MAC) + i]; | |
6b9bafec | 313 | *(((__be16 *)out->et0mac) + i) = cpu_to_be16(v); |
61e115a5 MB |
314 | } |
315 | for (i = 0; i < 3; i++) { | |
316 | v = in[SPOFF(SSB_SPROM1_ET1MAC) + i]; | |
6b9bafec | 317 | *(((__be16 *)out->et1mac) + i) = cpu_to_be16(v); |
61e115a5 MB |
318 | } |
319 | SPEX(et0phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0A, 0); | |
320 | SPEX(et1phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1A, | |
321 | SSB_SPROM1_ETHPHY_ET1A_SHIFT); | |
322 | SPEX(et0mdcport, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0M, 14); | |
323 | SPEX(et1mdcport, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1M, 15); | |
324 | SPEX(board_rev, SSB_SPROM1_BINF, SSB_SPROM1_BINF_BREV, 0); | |
325 | SPEX(country_code, SSB_SPROM1_BINF, SSB_SPROM1_BINF_CCODE, | |
326 | SSB_SPROM1_BINF_CCODE_SHIFT); | |
327 | SPEX(antenna_a, SSB_SPROM1_BINF, SSB_SPROM1_BINF_ANTA, | |
328 | SSB_SPROM1_BINF_ANTA_SHIFT); | |
329 | SPEX(antenna_bg, SSB_SPROM1_BINF, SSB_SPROM1_BINF_ANTBG, | |
330 | SSB_SPROM1_BINF_ANTBG_SHIFT); | |
331 | SPEX(pa0b0, SSB_SPROM1_PA0B0, 0xFFFF, 0); | |
332 | SPEX(pa0b1, SSB_SPROM1_PA0B1, 0xFFFF, 0); | |
333 | SPEX(pa0b2, SSB_SPROM1_PA0B2, 0xFFFF, 0); | |
334 | SPEX(pa1b0, SSB_SPROM1_PA1B0, 0xFFFF, 0); | |
335 | SPEX(pa1b1, SSB_SPROM1_PA1B1, 0xFFFF, 0); | |
336 | SPEX(pa1b2, SSB_SPROM1_PA1B2, 0xFFFF, 0); | |
337 | SPEX(gpio0, SSB_SPROM1_GPIOA, SSB_SPROM1_GPIOA_P0, 0); | |
338 | SPEX(gpio1, SSB_SPROM1_GPIOA, SSB_SPROM1_GPIOA_P1, | |
339 | SSB_SPROM1_GPIOA_P1_SHIFT); | |
340 | SPEX(gpio2, SSB_SPROM1_GPIOB, SSB_SPROM1_GPIOB_P2, 0); | |
341 | SPEX(gpio3, SSB_SPROM1_GPIOB, SSB_SPROM1_GPIOB_P3, | |
342 | SSB_SPROM1_GPIOB_P3_SHIFT); | |
343 | SPEX(maxpwr_a, SSB_SPROM1_MAXPWR, SSB_SPROM1_MAXPWR_A, | |
344 | SSB_SPROM1_MAXPWR_A_SHIFT); | |
345 | SPEX(maxpwr_bg, SSB_SPROM1_MAXPWR, SSB_SPROM1_MAXPWR_BG, 0); | |
346 | SPEX(itssi_a, SSB_SPROM1_ITSSI, SSB_SPROM1_ITSSI_A, | |
347 | SSB_SPROM1_ITSSI_A_SHIFT); | |
348 | SPEX(itssi_bg, SSB_SPROM1_ITSSI, SSB_SPROM1_ITSSI_BG, 0); | |
349 | SPEX(boardflags_lo, SSB_SPROM1_BFLLO, 0xFFFF, 0); | |
350 | SPEX(antenna_gain_a, SSB_SPROM1_AGAIN, SSB_SPROM1_AGAIN_A, 0); | |
351 | SPEX(antenna_gain_bg, SSB_SPROM1_AGAIN, SSB_SPROM1_AGAIN_BG, | |
352 | SSB_SPROM1_AGAIN_BG_SHIFT); | |
353 | for (i = 0; i < 4; i++) { | |
354 | v = in[SPOFF(SSB_SPROM1_OEM) + i]; | |
6b9bafec | 355 | *(((__le16 *)out->oem) + i) = cpu_to_le16(v); |
61e115a5 MB |
356 | } |
357 | } | |
358 | ||
359 | static void sprom_extract_r2(struct ssb_sprom_r2 *out, const u16 *in) | |
360 | { | |
361 | int i; | |
362 | u16 v; | |
363 | ||
364 | SPEX(boardflags_hi, SSB_SPROM2_BFLHI, 0xFFFF, 0); | |
365 | SPEX(maxpwr_a_hi, SSB_SPROM2_MAXP_A, SSB_SPROM2_MAXP_A_HI, 0); | |
366 | SPEX(maxpwr_a_lo, SSB_SPROM2_MAXP_A, SSB_SPROM2_MAXP_A_LO, | |
367 | SSB_SPROM2_MAXP_A_LO_SHIFT); | |
368 | SPEX(pa1lob0, SSB_SPROM2_PA1LOB0, 0xFFFF, 0); | |
369 | SPEX(pa1lob1, SSB_SPROM2_PA1LOB1, 0xFFFF, 0); | |
370 | SPEX(pa1lob2, SSB_SPROM2_PA1LOB2, 0xFFFF, 0); | |
371 | SPEX(pa1hib0, SSB_SPROM2_PA1HIB0, 0xFFFF, 0); | |
372 | SPEX(pa1hib1, SSB_SPROM2_PA1HIB1, 0xFFFF, 0); | |
373 | SPEX(pa1hib2, SSB_SPROM2_PA1HIB2, 0xFFFF, 0); | |
374 | SPEX(ofdm_pwr_off, SSB_SPROM2_OPO, SSB_SPROM2_OPO_VALUE, 0); | |
375 | for (i = 0; i < 4; i++) { | |
376 | v = in[SPOFF(SSB_SPROM2_CCODE) + i]; | |
6b9bafec | 377 | *(((__le16 *)out->country_str) + i) = cpu_to_le16(v); |
61e115a5 MB |
378 | } |
379 | } | |
380 | ||
381 | static void sprom_extract_r3(struct ssb_sprom_r3 *out, const u16 *in) | |
382 | { | |
383 | out->ofdmapo = (in[SPOFF(SSB_SPROM3_OFDMAPO) + 0] & 0xFF00) >> 8; | |
384 | out->ofdmapo |= (in[SPOFF(SSB_SPROM3_OFDMAPO) + 0] & 0x00FF) << 8; | |
385 | out->ofdmapo <<= 16; | |
386 | out->ofdmapo |= (in[SPOFF(SSB_SPROM3_OFDMAPO) + 1] & 0xFF00) >> 8; | |
387 | out->ofdmapo |= (in[SPOFF(SSB_SPROM3_OFDMAPO) + 1] & 0x00FF) << 8; | |
388 | ||
389 | out->ofdmalpo = (in[SPOFF(SSB_SPROM3_OFDMALPO) + 0] & 0xFF00) >> 8; | |
390 | out->ofdmalpo |= (in[SPOFF(SSB_SPROM3_OFDMALPO) + 0] & 0x00FF) << 8; | |
391 | out->ofdmalpo <<= 16; | |
392 | out->ofdmalpo |= (in[SPOFF(SSB_SPROM3_OFDMALPO) + 1] & 0xFF00) >> 8; | |
393 | out->ofdmalpo |= (in[SPOFF(SSB_SPROM3_OFDMALPO) + 1] & 0x00FF) << 8; | |
394 | ||
395 | out->ofdmahpo = (in[SPOFF(SSB_SPROM3_OFDMAHPO) + 0] & 0xFF00) >> 8; | |
396 | out->ofdmahpo |= (in[SPOFF(SSB_SPROM3_OFDMAHPO) + 0] & 0x00FF) << 8; | |
397 | out->ofdmahpo <<= 16; | |
398 | out->ofdmahpo |= (in[SPOFF(SSB_SPROM3_OFDMAHPO) + 1] & 0xFF00) >> 8; | |
399 | out->ofdmahpo |= (in[SPOFF(SSB_SPROM3_OFDMAHPO) + 1] & 0x00FF) << 8; | |
400 | ||
401 | SPEX(gpioldc_on_cnt, SSB_SPROM3_GPIOLDC, SSB_SPROM3_GPIOLDC_ON, | |
402 | SSB_SPROM3_GPIOLDC_ON_SHIFT); | |
403 | SPEX(gpioldc_off_cnt, SSB_SPROM3_GPIOLDC, SSB_SPROM3_GPIOLDC_OFF, | |
404 | SSB_SPROM3_GPIOLDC_OFF_SHIFT); | |
405 | SPEX(cckpo_1M, SSB_SPROM3_CCKPO, SSB_SPROM3_CCKPO_1M, 0); | |
406 | SPEX(cckpo_2M, SSB_SPROM3_CCKPO, SSB_SPROM3_CCKPO_2M, | |
407 | SSB_SPROM3_CCKPO_2M_SHIFT); | |
408 | SPEX(cckpo_55M, SSB_SPROM3_CCKPO, SSB_SPROM3_CCKPO_55M, | |
409 | SSB_SPROM3_CCKPO_55M_SHIFT); | |
410 | SPEX(cckpo_11M, SSB_SPROM3_CCKPO, SSB_SPROM3_CCKPO_11M, | |
411 | SSB_SPROM3_CCKPO_11M_SHIFT); | |
412 | ||
413 | out->ofdmgpo = (in[SPOFF(SSB_SPROM3_OFDMGPO) + 0] & 0xFF00) >> 8; | |
414 | out->ofdmgpo |= (in[SPOFF(SSB_SPROM3_OFDMGPO) + 0] & 0x00FF) << 8; | |
415 | out->ofdmgpo <<= 16; | |
416 | out->ofdmgpo |= (in[SPOFF(SSB_SPROM3_OFDMGPO) + 1] & 0xFF00) >> 8; | |
417 | out->ofdmgpo |= (in[SPOFF(SSB_SPROM3_OFDMGPO) + 1] & 0x00FF) << 8; | |
418 | } | |
419 | ||
420 | static int sprom_extract(struct ssb_bus *bus, | |
421 | struct ssb_sprom *out, const u16 *in) | |
422 | { | |
423 | memset(out, 0, sizeof(*out)); | |
424 | ||
425 | SPEX(revision, SSB_SPROM_REVISION, SSB_SPROM_REVISION_REV, 0); | |
426 | SPEX(crc, SSB_SPROM_REVISION, SSB_SPROM_REVISION_CRC, | |
427 | SSB_SPROM_REVISION_CRC_SHIFT); | |
428 | ||
429 | if ((bus->chip_id & 0xFF00) == 0x4400) { | |
430 | /* Workaround: The BCM44XX chip has a stupid revision | |
431 | * number stored in the SPROM. | |
432 | * Always extract r1. */ | |
433 | sprom_extract_r1(&out->r1, in); | |
434 | } else { | |
435 | if (out->revision == 0) | |
436 | goto unsupported; | |
437 | if (out->revision >= 1 && out->revision <= 3) | |
438 | sprom_extract_r1(&out->r1, in); | |
439 | if (out->revision >= 2 && out->revision <= 3) | |
440 | sprom_extract_r2(&out->r2, in); | |
441 | if (out->revision == 3) | |
442 | sprom_extract_r3(&out->r3, in); | |
443 | if (out->revision >= 4) | |
444 | goto unsupported; | |
445 | } | |
446 | ||
447 | return 0; | |
448 | unsupported: | |
449 | ssb_printk(KERN_WARNING PFX "Unsupported SPROM revision %d " | |
450 | "detected. Will extract v1\n", out->revision); | |
451 | sprom_extract_r1(&out->r1, in); | |
452 | return 0; | |
453 | } | |
454 | ||
455 | static int ssb_pci_sprom_get(struct ssb_bus *bus, | |
456 | struct ssb_sprom *sprom) | |
457 | { | |
458 | int err = -ENOMEM; | |
459 | u16 *buf; | |
460 | ||
461 | buf = kcalloc(SSB_SPROMSIZE_WORDS, sizeof(u16), GFP_KERNEL); | |
462 | if (!buf) | |
463 | goto out; | |
464 | sprom_do_read(bus, buf); | |
465 | err = sprom_check_crc(buf); | |
466 | if (err) { | |
467 | ssb_printk(KERN_WARNING PFX | |
468 | "WARNING: Invalid SPROM CRC (corrupt SPROM)\n"); | |
469 | } | |
470 | err = sprom_extract(bus, sprom, buf); | |
471 | ||
472 | kfree(buf); | |
473 | out: | |
474 | return err; | |
475 | } | |
476 | ||
477 | static void ssb_pci_get_boardinfo(struct ssb_bus *bus, | |
478 | struct ssb_boardinfo *bi) | |
479 | { | |
480 | pci_read_config_word(bus->host_pci, PCI_SUBSYSTEM_VENDOR_ID, | |
481 | &bi->vendor); | |
482 | pci_read_config_word(bus->host_pci, PCI_SUBSYSTEM_ID, | |
483 | &bi->type); | |
484 | pci_read_config_word(bus->host_pci, PCI_REVISION_ID, | |
485 | &bi->rev); | |
486 | } | |
487 | ||
488 | int ssb_pci_get_invariants(struct ssb_bus *bus, | |
489 | struct ssb_init_invariants *iv) | |
490 | { | |
491 | int err; | |
492 | ||
493 | err = ssb_pci_sprom_get(bus, &iv->sprom); | |
494 | if (err) | |
495 | goto out; | |
496 | ssb_pci_get_boardinfo(bus, &iv->boardinfo); | |
497 | ||
498 | out: | |
499 | return err; | |
500 | } | |
501 | ||
502 | #ifdef CONFIG_SSB_DEBUG | |
503 | static int ssb_pci_assert_buspower(struct ssb_bus *bus) | |
504 | { | |
505 | if (likely(bus->powered_up)) | |
506 | return 0; | |
507 | ||
508 | printk(KERN_ERR PFX "FATAL ERROR: Bus powered down " | |
509 | "while accessing PCI MMIO space\n"); | |
510 | if (bus->power_warn_count <= 10) { | |
511 | bus->power_warn_count++; | |
512 | dump_stack(); | |
513 | } | |
514 | ||
515 | return -ENODEV; | |
516 | } | |
517 | #else /* DEBUG */ | |
518 | static inline int ssb_pci_assert_buspower(struct ssb_bus *bus) | |
519 | { | |
520 | return 0; | |
521 | } | |
522 | #endif /* DEBUG */ | |
523 | ||
524 | static u16 ssb_pci_read16(struct ssb_device *dev, u16 offset) | |
525 | { | |
526 | struct ssb_bus *bus = dev->bus; | |
527 | ||
528 | if (unlikely(ssb_pci_assert_buspower(bus))) | |
529 | return 0xFFFF; | |
530 | if (unlikely(bus->mapped_device != dev)) { | |
531 | if (unlikely(ssb_pci_switch_core(bus, dev))) | |
532 | return 0xFFFF; | |
533 | } | |
4b402c65 | 534 | return ioread16(bus->mmio + offset); |
61e115a5 MB |
535 | } |
536 | ||
537 | static u32 ssb_pci_read32(struct ssb_device *dev, u16 offset) | |
538 | { | |
539 | struct ssb_bus *bus = dev->bus; | |
540 | ||
541 | if (unlikely(ssb_pci_assert_buspower(bus))) | |
542 | return 0xFFFFFFFF; | |
543 | if (unlikely(bus->mapped_device != dev)) { | |
544 | if (unlikely(ssb_pci_switch_core(bus, dev))) | |
545 | return 0xFFFFFFFF; | |
546 | } | |
4b402c65 | 547 | return ioread32(bus->mmio + offset); |
61e115a5 MB |
548 | } |
549 | ||
550 | static void ssb_pci_write16(struct ssb_device *dev, u16 offset, u16 value) | |
551 | { | |
552 | struct ssb_bus *bus = dev->bus; | |
553 | ||
554 | if (unlikely(ssb_pci_assert_buspower(bus))) | |
555 | return; | |
556 | if (unlikely(bus->mapped_device != dev)) { | |
557 | if (unlikely(ssb_pci_switch_core(bus, dev))) | |
558 | return; | |
559 | } | |
4b402c65 | 560 | iowrite16(value, bus->mmio + offset); |
61e115a5 MB |
561 | } |
562 | ||
563 | static void ssb_pci_write32(struct ssb_device *dev, u16 offset, u32 value) | |
564 | { | |
565 | struct ssb_bus *bus = dev->bus; | |
566 | ||
567 | if (unlikely(ssb_pci_assert_buspower(bus))) | |
568 | return; | |
569 | if (unlikely(bus->mapped_device != dev)) { | |
570 | if (unlikely(ssb_pci_switch_core(bus, dev))) | |
571 | return; | |
572 | } | |
4b402c65 | 573 | iowrite32(value, bus->mmio + offset); |
61e115a5 MB |
574 | } |
575 | ||
576 | /* Not "static", as it's used in main.c */ | |
577 | const struct ssb_bus_ops ssb_pci_ops = { | |
578 | .read16 = ssb_pci_read16, | |
579 | .read32 = ssb_pci_read32, | |
580 | .write16 = ssb_pci_write16, | |
581 | .write32 = ssb_pci_write32, | |
582 | }; | |
583 | ||
584 | static int sprom2hex(const u16 *sprom, char *buf, size_t buf_len) | |
585 | { | |
586 | int i, pos = 0; | |
587 | ||
588 | for (i = 0; i < SSB_SPROMSIZE_WORDS; i++) { | |
589 | pos += snprintf(buf + pos, buf_len - pos - 1, | |
590 | "%04X", swab16(sprom[i]) & 0xFFFF); | |
591 | } | |
592 | pos += snprintf(buf + pos, buf_len - pos - 1, "\n"); | |
593 | ||
594 | return pos + 1; | |
595 | } | |
596 | ||
597 | static int hex2sprom(u16 *sprom, const char *dump, size_t len) | |
598 | { | |
599 | char tmp[5] = { 0 }; | |
600 | int cnt = 0; | |
601 | unsigned long parsed; | |
602 | ||
603 | if (len < SSB_SPROMSIZE_BYTES * 2) | |
604 | return -EINVAL; | |
605 | ||
606 | while (cnt < SSB_SPROMSIZE_WORDS) { | |
607 | memcpy(tmp, dump, 4); | |
608 | dump += 4; | |
609 | parsed = simple_strtoul(tmp, NULL, 16); | |
610 | sprom[cnt++] = swab16((u16)parsed); | |
611 | } | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
616 | static ssize_t ssb_pci_attr_sprom_show(struct device *pcidev, | |
617 | struct device_attribute *attr, | |
618 | char *buf) | |
619 | { | |
620 | struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev); | |
621 | struct ssb_bus *bus; | |
622 | u16 *sprom; | |
623 | int err = -ENODEV; | |
624 | ssize_t count = 0; | |
625 | ||
626 | bus = ssb_pci_dev_to_bus(pdev); | |
627 | if (!bus) | |
628 | goto out; | |
629 | err = -ENOMEM; | |
630 | sprom = kcalloc(SSB_SPROMSIZE_WORDS, sizeof(u16), GFP_KERNEL); | |
631 | if (!sprom) | |
632 | goto out; | |
633 | ||
634 | /* Use interruptible locking, as the SPROM write might | |
635 | * be holding the lock for several seconds. So allow userspace | |
636 | * to cancel operation. */ | |
637 | err = -ERESTARTSYS; | |
638 | if (mutex_lock_interruptible(&bus->pci_sprom_mutex)) | |
639 | goto out_kfree; | |
640 | sprom_do_read(bus, sprom); | |
641 | mutex_unlock(&bus->pci_sprom_mutex); | |
642 | ||
643 | count = sprom2hex(sprom, buf, PAGE_SIZE); | |
644 | err = 0; | |
645 | ||
646 | out_kfree: | |
647 | kfree(sprom); | |
648 | out: | |
649 | return err ? err : count; | |
650 | } | |
651 | ||
652 | static ssize_t ssb_pci_attr_sprom_store(struct device *pcidev, | |
653 | struct device_attribute *attr, | |
654 | const char *buf, size_t count) | |
655 | { | |
656 | struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev); | |
657 | struct ssb_bus *bus; | |
658 | u16 *sprom; | |
659 | int res = 0, err = -ENODEV; | |
660 | ||
661 | bus = ssb_pci_dev_to_bus(pdev); | |
662 | if (!bus) | |
663 | goto out; | |
664 | err = -ENOMEM; | |
665 | sprom = kcalloc(SSB_SPROMSIZE_WORDS, sizeof(u16), GFP_KERNEL); | |
666 | if (!sprom) | |
667 | goto out; | |
668 | err = hex2sprom(sprom, buf, count); | |
669 | if (err) { | |
670 | err = -EINVAL; | |
671 | goto out_kfree; | |
672 | } | |
673 | err = sprom_check_crc(sprom); | |
674 | if (err) { | |
675 | err = -EINVAL; | |
676 | goto out_kfree; | |
677 | } | |
678 | ||
679 | /* Use interruptible locking, as the SPROM write might | |
680 | * be holding the lock for several seconds. So allow userspace | |
681 | * to cancel operation. */ | |
682 | err = -ERESTARTSYS; | |
683 | if (mutex_lock_interruptible(&bus->pci_sprom_mutex)) | |
684 | goto out_kfree; | |
685 | err = ssb_devices_freeze(bus); | |
686 | if (err == -EOPNOTSUPP) { | |
687 | ssb_printk(KERN_ERR PFX "SPROM write: Could not freeze devices. " | |
688 | "No suspend support. Is CONFIG_PM enabled?\n"); | |
689 | goto out_unlock; | |
690 | } | |
691 | if (err) { | |
692 | ssb_printk(KERN_ERR PFX "SPROM write: Could not freeze all devices\n"); | |
693 | goto out_unlock; | |
694 | } | |
695 | res = sprom_do_write(bus, sprom); | |
696 | err = ssb_devices_thaw(bus); | |
697 | if (err) | |
698 | ssb_printk(KERN_ERR PFX "SPROM write: Could not thaw all devices\n"); | |
699 | out_unlock: | |
700 | mutex_unlock(&bus->pci_sprom_mutex); | |
701 | out_kfree: | |
702 | kfree(sprom); | |
703 | out: | |
704 | if (res) | |
705 | return res; | |
706 | return err ? err : count; | |
707 | } | |
708 | ||
709 | static DEVICE_ATTR(ssb_sprom, 0600, | |
710 | ssb_pci_attr_sprom_show, | |
711 | ssb_pci_attr_sprom_store); | |
712 | ||
713 | void ssb_pci_exit(struct ssb_bus *bus) | |
714 | { | |
715 | struct pci_dev *pdev; | |
716 | ||
717 | if (bus->bustype != SSB_BUSTYPE_PCI) | |
718 | return; | |
719 | ||
720 | pdev = bus->host_pci; | |
721 | device_remove_file(&pdev->dev, &dev_attr_ssb_sprom); | |
722 | } | |
723 | ||
724 | int ssb_pci_init(struct ssb_bus *bus) | |
725 | { | |
726 | struct pci_dev *pdev; | |
727 | int err; | |
728 | ||
729 | if (bus->bustype != SSB_BUSTYPE_PCI) | |
730 | return 0; | |
731 | ||
732 | pdev = bus->host_pci; | |
733 | mutex_init(&bus->pci_sprom_mutex); | |
734 | err = device_create_file(&pdev->dev, &dev_attr_ssb_sprom); | |
735 | if (err) | |
736 | goto out; | |
737 | ||
738 | out: | |
739 | return err; | |
740 | } |