1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 *
16 * File contents: support functions for PCI/PCIe
17 */
18
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21 #include <linux/delay.h>
22
23 #include <defs.h>
24 #include <chipcommon.h>
25 #include <brcmu_utils.h>
26 #include <brcm_hw_ids.h>
27 #include <soc.h>
28 #include "types.h"
29 #include "pub.h"
30 #include "pmu.h"
31 #include "aiutils.h"
32
33 /* slow_clk_ctl */
34 /* slow clock source mask */
35 #define SCC_SS_MASK 0x00000007
36 /* source of slow clock is LPO */
37 #define SCC_SS_LPO 0x00000000
38 /* source of slow clock is crystal */
39 #define SCC_SS_XTAL 0x00000001
40 /* source of slow clock is PCI */
41 #define SCC_SS_PCI 0x00000002
42 /* LPOFreqSel, 1: 160Khz, 0: 32KHz */
43 #define SCC_LF 0x00000200
44 /* LPOPowerDown, 1: LPO is disabled, 0: LPO is enabled */
45 #define SCC_LP 0x00000400
46 /* ForceSlowClk, 1: sb/cores running on slow clock, 0: power logic control */
47 #define SCC_FS 0x00000800
48 /* IgnorePllOffReq, 1/0:
49 * power logic ignores/honors PLL clock disable requests from core
50 */
51 #define SCC_IP 0x00001000
52 /* XtalControlEn, 1/0:
53 * power logic does/doesn't disable crystal when appropriate
54 */
55 #define SCC_XC 0x00002000
56 /* XtalPU (RO), 1/0: crystal running/disabled */
57 #define SCC_XP 0x00004000
58 /* ClockDivider (SlowClk = 1/(4+divisor)) */
59 #define SCC_CD_MASK 0xffff0000
60 #define SCC_CD_SHIFT 16
61
62 /* system_clk_ctl */
63 /* ILPen: Enable Idle Low Power */
64 #define SYCC_IE 0x00000001
65 /* ALPen: Enable Active Low Power */
66 #define SYCC_AE 0x00000002
67 /* ForcePLLOn */
68 #define SYCC_FP 0x00000004
69 /* Force ALP (or HT if ALPen is not set */
70 #define SYCC_AR 0x00000008
71 /* Force HT */
72 #define SYCC_HR 0x00000010
73 /* ClkDiv (ILP = 1/(4 * (divisor + 1)) */
74 #define SYCC_CD_MASK 0xffff0000
75 #define SYCC_CD_SHIFT 16
76
77 #define CST4329_SPROM_OTP_SEL_MASK 0x00000003
78 /* OTP is powered up, use def. CIS, no SPROM */
79 #define CST4329_DEFCIS_SEL 0
80 /* OTP is powered up, SPROM is present */
81 #define CST4329_SPROM_SEL 1
82 /* OTP is powered up, no SPROM */
83 #define CST4329_OTP_SEL 2
84 /* OTP is powered down, SPROM is present */
85 #define CST4329_OTP_PWRDN 3
86
87 #define CST4329_SPI_SDIO_MODE_MASK 0x00000004
88 #define CST4329_SPI_SDIO_MODE_SHIFT 2
89
90 /* 43224 chip-specific ChipControl register bits */
91 #define CCTRL43224_GPIO_TOGGLE 0x8000
92 /* 12 mA drive strength */
93 #define CCTRL_43224A0_12MA_LED_DRIVE 0x00F000F0
94 /* 12 mA drive strength for later 43224s */
95 #define CCTRL_43224B0_12MA_LED_DRIVE 0xF0
96
97 /* 43236 Chip specific ChipStatus register bits */
98 #define CST43236_SFLASH_MASK 0x00000040
99 #define CST43236_OTP_MASK 0x00000080
100 #define CST43236_HSIC_MASK 0x00000100 /* USB/HSIC */
101 #define CST43236_BP_CLK 0x00000200 /* 120/96Mbps */
102 #define CST43236_BOOT_MASK 0x00001800
103 #define CST43236_BOOT_SHIFT 11
104 #define CST43236_BOOT_FROM_SRAM 0 /* boot from SRAM, ARM in reset */
105 #define CST43236_BOOT_FROM_ROM 1 /* boot from ROM */
106 #define CST43236_BOOT_FROM_FLASH 2 /* boot from FLASH */
107 #define CST43236_BOOT_FROM_INVALID 3
108
109 /* 4331 chip-specific ChipControl register bits */
110 /* 0 disable */
111 #define CCTRL4331_BT_COEXIST (1<<0)
112 /* 0 SECI is disabled (JTAG functional) */
113 #define CCTRL4331_SECI (1<<1)
114 /* 0 disable */
115 #define CCTRL4331_EXT_LNA (1<<2)
116 /* sprom/gpio13-15 mux */
117 #define CCTRL4331_SPROM_GPIO13_15 (1<<3)
118 /* 0 ext pa disable, 1 ext pa enabled */
119 #define CCTRL4331_EXTPA_EN (1<<4)
120 /* set drive out GPIO_CLK on sprom_cs pin */
121 #define CCTRL4331_GPIOCLK_ON_SPROMCS (1<<5)
122 /* use sprom_cs pin as PCIE mdio interface */
123 #define CCTRL4331_PCIE_MDIO_ON_SPROMCS (1<<6)
124 /* aband extpa will be at gpio2/5 and sprom_dout */
125 #define CCTRL4331_EXTPA_ON_GPIO2_5 (1<<7)
126 /* override core control on pipe_AuxClkEnable */
127 #define CCTRL4331_OVR_PIPEAUXCLKEN (1<<8)
128 /* override core control on pipe_AuxPowerDown */
129 #define CCTRL4331_OVR_PIPEAUXPWRDOWN (1<<9)
130 /* pcie_auxclkenable */
131 #define CCTRL4331_PCIE_AUXCLKEN (1<<10)
132 /* pcie_pipe_pllpowerdown */
133 #define CCTRL4331_PCIE_PIPE_PLLDOWN (1<<11)
134 /* enable bt_shd0 at gpio4 */
135 #define CCTRL4331_BT_SHD0_ON_GPIO4 (1<<16)
136 /* enable bt_shd1 at gpio5 */
137 #define CCTRL4331_BT_SHD1_ON_GPIO5 (1<<17)
138
139 /* 4331 Chip specific ChipStatus register bits */
140 /* crystal frequency 20/40Mhz */
141 #define CST4331_XTAL_FREQ 0x00000001
142 #define CST4331_SPROM_PRESENT 0x00000002
143 #define CST4331_OTP_PRESENT 0x00000004
144 #define CST4331_LDO_RF 0x00000008
145 #define CST4331_LDO_PAR 0x00000010
146
147 /* 4319 chip-specific ChipStatus register bits */
148 #define CST4319_SPI_CPULESSUSB 0x00000001
149 #define CST4319_SPI_CLK_POL 0x00000002
150 #define CST4319_SPI_CLK_PH 0x00000008
151 /* gpio [7:6], SDIO CIS selection */
152 #define CST4319_SPROM_OTP_SEL_MASK 0x000000c0
153 #define CST4319_SPROM_OTP_SEL_SHIFT 6
154 /* use default CIS, OTP is powered up */
155 #define CST4319_DEFCIS_SEL 0x00000000
156 /* use SPROM, OTP is powered up */
157 #define CST4319_SPROM_SEL 0x00000040
158 /* use OTP, OTP is powered up */
159 #define CST4319_OTP_SEL 0x00000080
160 /* use SPROM, OTP is powered down */
161 #define CST4319_OTP_PWRDN 0x000000c0
162 /* gpio [8], sdio/usb mode */
163 #define CST4319_SDIO_USB_MODE 0x00000100
164 #define CST4319_REMAP_SEL_MASK 0x00000600
165 #define CST4319_ILPDIV_EN 0x00000800
166 #define CST4319_XTAL_PD_POL 0x00001000
167 #define CST4319_LPO_SEL 0x00002000
168 #define CST4319_RES_INIT_MODE 0x0000c000
169 /* PALDO is configured with external PNP */
170 #define CST4319_PALDO_EXTPNP 0x00010000
171 #define CST4319_CBUCK_MODE_MASK 0x00060000
172 #define CST4319_CBUCK_MODE_BURST 0x00020000
173 #define CST4319_CBUCK_MODE_LPBURST 0x00060000
174 #define CST4319_RCAL_VALID 0x01000000
175 #define CST4319_RCAL_VALUE_MASK 0x3e000000
176 #define CST4319_RCAL_VALUE_SHIFT 25
177
178 /* 4336 chip-specific ChipStatus register bits */
179 #define CST4336_SPI_MODE_MASK 0x00000001
180 #define CST4336_SPROM_PRESENT 0x00000002
181 #define CST4336_OTP_PRESENT 0x00000004
182 #define CST4336_ARMREMAP_0 0x00000008
183 #define CST4336_ILPDIV_EN_MASK 0x00000010
184 #define CST4336_ILPDIV_EN_SHIFT 4
185 #define CST4336_XTAL_PD_POL_MASK 0x00000020
186 #define CST4336_XTAL_PD_POL_SHIFT 5
187 #define CST4336_LPO_SEL_MASK 0x00000040
188 #define CST4336_LPO_SEL_SHIFT 6
189 #define CST4336_RES_INIT_MODE_MASK 0x00000180
190 #define CST4336_RES_INIT_MODE_SHIFT 7
191 #define CST4336_CBUCK_MODE_MASK 0x00000600
192 #define CST4336_CBUCK_MODE_SHIFT 9
193
194 /* 4313 chip-specific ChipStatus register bits */
195 #define CST4313_SPROM_PRESENT 1
196 #define CST4313_OTP_PRESENT 2
197 #define CST4313_SPROM_OTP_SEL_MASK 0x00000002
198 #define CST4313_SPROM_OTP_SEL_SHIFT 0
199
200 /* 4313 Chip specific ChipControl register bits */
201 /* 12 mA drive strengh for later 4313 */
202 #define CCTRL_4313_12MA_LED_DRIVE 0x00000007
203
204 /* Manufacturer Ids */
205 #define MFGID_ARM 0x43b
206 #define MFGID_BRCM 0x4bf
207 #define MFGID_MIPS 0x4a7
208
209 /* Enumeration ROM registers */
210 #define ER_EROMENTRY 0x000
211 #define ER_REMAPCONTROL 0xe00
212 #define ER_REMAPSELECT 0xe04
213 #define ER_MASTERSELECT 0xe10
214 #define ER_ITCR 0xf00
215 #define ER_ITIP 0xf04
216
217 /* Erom entries */
218 #define ER_TAG 0xe
219 #define ER_TAG1 0x6
220 #define ER_VALID 1
221 #define ER_CI 0
222 #define ER_MP 2
223 #define ER_ADD 4
224 #define ER_END 0xe
225 #define ER_BAD 0xffffffff
226
227 /* EROM CompIdentA */
228 #define CIA_MFG_MASK 0xfff00000
229 #define CIA_MFG_SHIFT 20
230 #define CIA_CID_MASK 0x000fff00
231 #define CIA_CID_SHIFT 8
232 #define CIA_CCL_MASK 0x000000f0
233 #define CIA_CCL_SHIFT 4
234
235 /* EROM CompIdentB */
236 #define CIB_REV_MASK 0xff000000
237 #define CIB_REV_SHIFT 24
238 #define CIB_NSW_MASK 0x00f80000
239 #define CIB_NSW_SHIFT 19
240 #define CIB_NMW_MASK 0x0007c000
241 #define CIB_NMW_SHIFT 14
242 #define CIB_NSP_MASK 0x00003e00
243 #define CIB_NSP_SHIFT 9
244 #define CIB_NMP_MASK 0x000001f0
245 #define CIB_NMP_SHIFT 4
246
247 /* EROM AddrDesc */
248 #define AD_ADDR_MASK 0xfffff000
249 #define AD_SP_MASK 0x00000f00
250 #define AD_SP_SHIFT 8
251 #define AD_ST_MASK 0x000000c0
252 #define AD_ST_SHIFT 6
253 #define AD_ST_SLAVE 0x00000000
254 #define AD_ST_BRIDGE 0x00000040
255 #define AD_ST_SWRAP 0x00000080
256 #define AD_ST_MWRAP 0x000000c0
257 #define AD_SZ_MASK 0x00000030
258 #define AD_SZ_SHIFT 4
259 #define AD_SZ_4K 0x00000000
260 #define AD_SZ_8K 0x00000010
261 #define AD_SZ_16K 0x00000020
262 #define AD_SZ_SZD 0x00000030
263 #define AD_AG32 0x00000008
264 #define AD_ADDR_ALIGN 0x00000fff
265 #define AD_SZ_BASE 0x00001000 /* 4KB */
266
267 /* EROM SizeDesc */
268 #define SD_SZ_MASK 0xfffff000
269 #define SD_SG32 0x00000008
270 #define SD_SZ_ALIGN 0x00000fff
271
272 /* PCI config space bit 4 for 4306c0 slow clock source */
273 #define PCI_CFG_GPIO_SCS 0x10
274 /* PCI config space GPIO 14 for Xtal power-up */
275 #define PCI_CFG_GPIO_XTAL 0x40
276 /* PCI config space GPIO 15 for PLL power-down */
277 #define PCI_CFG_GPIO_PLL 0x80
278
279 /* power control defines */
280 #define PLL_DELAY 150 /* us pll on delay */
281 #define FREF_DELAY 200 /* us fref change delay */
282 #define XTAL_ON_DELAY 1000 /* us crystal power-on delay */
283
284 /* resetctrl */
285 #define AIRC_RESET 1
286
287 #define NOREV -1 /* Invalid rev */
288
289 /* GPIO Based LED powersave defines */
290 #define DEFAULT_GPIO_ONTIME 10 /* Default: 10% on */
291 #define DEFAULT_GPIO_OFFTIME 90 /* Default: 10% on */
292
293 /* When Srom support present, fields in sromcontrol */
294 #define SRC_START 0x80000000
295 #define SRC_BUSY 0x80000000
296 #define SRC_OPCODE 0x60000000
297 #define SRC_OP_READ 0x00000000
298 #define SRC_OP_WRITE 0x20000000
299 #define SRC_OP_WRDIS 0x40000000
300 #define SRC_OP_WREN 0x60000000
301 #define SRC_OTPSEL 0x00000010
302 #define SRC_LOCK 0x00000008
303 #define SRC_SIZE_MASK 0x00000006
304 #define SRC_SIZE_1K 0x00000000
305 #define SRC_SIZE_4K 0x00000002
306 #define SRC_SIZE_16K 0x00000004
307 #define SRC_SIZE_SHIFT 1
308 #define SRC_PRESENT 0x00000001
309
310 /* External PA enable mask */
311 #define GPIO_CTRL_EPA_EN_MASK 0x40
312
313 #define DEFAULT_GPIOTIMERVAL \
314 ((DEFAULT_GPIO_ONTIME << GPIO_ONTIME_SHIFT) | DEFAULT_GPIO_OFFTIME)
315
316 #define BADIDX (SI_MAXCORES + 1)
317
318 #define IS_SIM(chippkg) \
319 ((chippkg == HDLSIM_PKG_ID) || (chippkg == HWSIM_PKG_ID))
320
321 #define GOODCOREADDR(x, b) \
322 (((x) >= (b)) && ((x) < ((b) + SI_MAXCORES * SI_CORE_SIZE)) && \
323 IS_ALIGNED((x), SI_CORE_SIZE))
324
325 struct aidmp {
326 u32 oobselina30; /* 0x000 */
327 u32 oobselina74; /* 0x004 */
328 u32 PAD[6];
329 u32 oobselinb30; /* 0x020 */
330 u32 oobselinb74; /* 0x024 */
331 u32 PAD[6];
332 u32 oobselinc30; /* 0x040 */
333 u32 oobselinc74; /* 0x044 */
334 u32 PAD[6];
335 u32 oobselind30; /* 0x060 */
336 u32 oobselind74; /* 0x064 */
337 u32 PAD[38];
338 u32 oobselouta30; /* 0x100 */
339 u32 oobselouta74; /* 0x104 */
340 u32 PAD[6];
341 u32 oobseloutb30; /* 0x120 */
342 u32 oobseloutb74; /* 0x124 */
343 u32 PAD[6];
344 u32 oobseloutc30; /* 0x140 */
345 u32 oobseloutc74; /* 0x144 */
346 u32 PAD[6];
347 u32 oobseloutd30; /* 0x160 */
348 u32 oobseloutd74; /* 0x164 */
349 u32 PAD[38];
350 u32 oobsynca; /* 0x200 */
351 u32 oobseloutaen; /* 0x204 */
352 u32 PAD[6];
353 u32 oobsyncb; /* 0x220 */
354 u32 oobseloutben; /* 0x224 */
355 u32 PAD[6];
356 u32 oobsyncc; /* 0x240 */
357 u32 oobseloutcen; /* 0x244 */
358 u32 PAD[6];
359 u32 oobsyncd; /* 0x260 */
360 u32 oobseloutden; /* 0x264 */
361 u32 PAD[38];
362 u32 oobaextwidth; /* 0x300 */
363 u32 oobainwidth; /* 0x304 */
364 u32 oobaoutwidth; /* 0x308 */
365 u32 PAD[5];
366 u32 oobbextwidth; /* 0x320 */
367 u32 oobbinwidth; /* 0x324 */
368 u32 oobboutwidth; /* 0x328 */
369 u32 PAD[5];
370 u32 oobcextwidth; /* 0x340 */
371 u32 oobcinwidth; /* 0x344 */
372 u32 oobcoutwidth; /* 0x348 */
373 u32 PAD[5];
374 u32 oobdextwidth; /* 0x360 */
375 u32 oobdinwidth; /* 0x364 */
376 u32 oobdoutwidth; /* 0x368 */
377 u32 PAD[37];
378 u32 ioctrlset; /* 0x400 */
379 u32 ioctrlclear; /* 0x404 */
380 u32 ioctrl; /* 0x408 */
381 u32 PAD[61];
382 u32 iostatus; /* 0x500 */
383 u32 PAD[127];
384 u32 ioctrlwidth; /* 0x700 */
385 u32 iostatuswidth; /* 0x704 */
386 u32 PAD[62];
387 u32 resetctrl; /* 0x800 */
388 u32 resetstatus; /* 0x804 */
389 u32 resetreadid; /* 0x808 */
390 u32 resetwriteid; /* 0x80c */
391 u32 PAD[60];
392 u32 errlogctrl; /* 0x900 */
393 u32 errlogdone; /* 0x904 */
394 u32 errlogstatus; /* 0x908 */
395 u32 errlogaddrlo; /* 0x90c */
396 u32 errlogaddrhi; /* 0x910 */
397 u32 errlogid; /* 0x914 */
398 u32 errloguser; /* 0x918 */
399 u32 errlogflags; /* 0x91c */
400 u32 PAD[56];
401 u32 intstatus; /* 0xa00 */
402 u32 PAD[127];
403 u32 config; /* 0xe00 */
404 u32 PAD[63];
405 u32 itcr; /* 0xf00 */
406 u32 PAD[3];
407 u32 itipooba; /* 0xf10 */
408 u32 itipoobb; /* 0xf14 */
409 u32 itipoobc; /* 0xf18 */
410 u32 itipoobd; /* 0xf1c */
411 u32 PAD[4];
412 u32 itipoobaout; /* 0xf30 */
413 u32 itipoobbout; /* 0xf34 */
414 u32 itipoobcout; /* 0xf38 */
415 u32 itipoobdout; /* 0xf3c */
416 u32 PAD[4];
417 u32 itopooba; /* 0xf50 */
418 u32 itopoobb; /* 0xf54 */
419 u32 itopoobc; /* 0xf58 */
420 u32 itopoobd; /* 0xf5c */
421 u32 PAD[4];
422 u32 itopoobain; /* 0xf70 */
423 u32 itopoobbin; /* 0xf74 */
424 u32 itopoobcin; /* 0xf78 */
425 u32 itopoobdin; /* 0xf7c */
426 u32 PAD[4];
427 u32 itopreset; /* 0xf90 */
428 u32 PAD[15];
429 u32 peripherialid4; /* 0xfd0 */
430 u32 peripherialid5; /* 0xfd4 */
431 u32 peripherialid6; /* 0xfd8 */
432 u32 peripherialid7; /* 0xfdc */
433 u32 peripherialid0; /* 0xfe0 */
434 u32 peripherialid1; /* 0xfe4 */
435 u32 peripherialid2; /* 0xfe8 */
436 u32 peripherialid3; /* 0xfec */
437 u32 componentid0; /* 0xff0 */
438 u32 componentid1; /* 0xff4 */
439 u32 componentid2; /* 0xff8 */
440 u32 componentid3; /* 0xffc */
441 };
442
443 static bool
ai_buscore_setup(struct si_info * sii,struct bcma_device * cc)444 ai_buscore_setup(struct si_info *sii, struct bcma_device *cc)
445 {
446 /* no cores found, bail out */
447 if (cc->bus->nr_cores == 0)
448 return false;
449
450 /* get chipcommon rev */
451 sii->pub.ccrev = cc->id.rev;
452
453 /* get chipcommon chipstatus */
454 sii->chipst = bcma_read32(cc, CHIPCREGOFFS(chipstatus));
455
456 /* get chipcommon capabilites */
457 sii->pub.cccaps = bcma_read32(cc, CHIPCREGOFFS(capabilities));
458
459 /* get pmu rev and caps */
460 if (ai_get_cccaps(&sii->pub) & CC_CAP_PMU) {
461 sii->pub.pmucaps = bcma_read32(cc,
462 CHIPCREGOFFS(pmucapabilities));
463 sii->pub.pmurev = sii->pub.pmucaps & PCAP_REV_MASK;
464 }
465
466 return true;
467 }
468
ai_doattach(struct si_info * sii,struct bcma_bus * pbus)469 static struct si_info *ai_doattach(struct si_info *sii,
470 struct bcma_bus *pbus)
471 {
472 struct si_pub *sih = &sii->pub;
473 struct bcma_device *cc;
474
475 sii->icbus = pbus;
476 sii->pcibus = pbus->host_pci;
477
478 /* switch to Chipcommon core */
479 cc = pbus->drv_cc.core;
480
481 sih->chip = pbus->chipinfo.id;
482 sih->chiprev = pbus->chipinfo.rev;
483 sih->chippkg = pbus->chipinfo.pkg;
484 sih->boardvendor = pbus->boardinfo.vendor;
485 sih->boardtype = pbus->boardinfo.type;
486
487 if (!ai_buscore_setup(sii, cc))
488 goto exit;
489
490 /* === NVRAM, clock is ready === */
491 bcma_write32(cc, CHIPCREGOFFS(gpiopullup), 0);
492 bcma_write32(cc, CHIPCREGOFFS(gpiopulldown), 0);
493
494 /* PMU specific initializations */
495 if (ai_get_cccaps(sih) & CC_CAP_PMU) {
496 (void)si_pmu_measure_alpclk(sih);
497 }
498
499 return sii;
500
501 exit:
502
503 return NULL;
504 }
505
506 /*
507 * Allocate a si handle and do the attach.
508 */
509 struct si_pub *
ai_attach(struct bcma_bus * pbus)510 ai_attach(struct bcma_bus *pbus)
511 {
512 struct si_info *sii;
513
514 /* alloc struct si_info */
515 sii = kzalloc(sizeof(struct si_info), GFP_ATOMIC);
516 if (sii == NULL)
517 return NULL;
518
519 if (ai_doattach(sii, pbus) == NULL) {
520 kfree(sii);
521 return NULL;
522 }
523
524 return (struct si_pub *) sii;
525 }
526
527 /* may be called with core in reset */
ai_detach(struct si_pub * sih)528 void ai_detach(struct si_pub *sih)
529 {
530 struct si_info *sii;
531
532 sii = container_of(sih, struct si_info, pub);
533
534 if (sii == NULL)
535 return;
536
537 kfree(sii);
538 }
539
540 /*
541 * read/modify chipcommon core register.
542 */
ai_cc_reg(struct si_pub * sih,uint regoff,u32 mask,u32 val)543 uint ai_cc_reg(struct si_pub *sih, uint regoff, u32 mask, u32 val)
544 {
545 struct bcma_device *cc;
546 u32 w;
547 struct si_info *sii;
548
549 sii = container_of(sih, struct si_info, pub);
550 cc = sii->icbus->drv_cc.core;
551
552 /* mask and set */
553 if (mask || val)
554 bcma_maskset32(cc, regoff, ~mask, val);
555
556 /* readback */
557 w = bcma_read32(cc, regoff);
558
559 return w;
560 }
561
562 /* return the slow clock source - LPO, XTAL, or PCI */
ai_slowclk_src(struct si_pub * sih,struct bcma_device * cc)563 static uint ai_slowclk_src(struct si_pub *sih, struct bcma_device *cc)
564 {
565 return SCC_SS_XTAL;
566 }
567
568 /*
569 * return the ILP (slowclock) min or max frequency
570 * precondition: we've established the chip has dynamic clk control
571 */
ai_slowclk_freq(struct si_pub * sih,bool max_freq,struct bcma_device * cc)572 static uint ai_slowclk_freq(struct si_pub *sih, bool max_freq,
573 struct bcma_device *cc)
574 {
575 uint div;
576
577 /* Chipc rev 10 is InstaClock */
578 div = bcma_read32(cc, CHIPCREGOFFS(system_clk_ctl));
579 div = 4 * ((div >> SYCC_CD_SHIFT) + 1);
580 return max_freq ? XTALMAXFREQ : (XTALMINFREQ / div);
581 }
582
583 static void
ai_clkctl_setdelay(struct si_pub * sih,struct bcma_device * cc)584 ai_clkctl_setdelay(struct si_pub *sih, struct bcma_device *cc)
585 {
586 uint slowmaxfreq, pll_delay, slowclk;
587 uint pll_on_delay, fref_sel_delay;
588
589 pll_delay = PLL_DELAY;
590
591 /*
592 * If the slow clock is not sourced by the xtal then
593 * add the xtal_on_delay since the xtal will also be
594 * powered down by dynamic clk control logic.
595 */
596
597 slowclk = ai_slowclk_src(sih, cc);
598 if (slowclk != SCC_SS_XTAL)
599 pll_delay += XTAL_ON_DELAY;
600
601 /* Starting with 4318 it is ILP that is used for the delays */
602 slowmaxfreq =
603 ai_slowclk_freq(sih, false, cc);
604
605 pll_on_delay = ((slowmaxfreq * pll_delay) + 999999) / 1000000;
606 fref_sel_delay = ((slowmaxfreq * FREF_DELAY) + 999999) / 1000000;
607
608 bcma_write32(cc, CHIPCREGOFFS(pll_on_delay), pll_on_delay);
609 bcma_write32(cc, CHIPCREGOFFS(fref_sel_delay), fref_sel_delay);
610 }
611
612 /* initialize power control delay registers */
ai_clkctl_init(struct si_pub * sih)613 void ai_clkctl_init(struct si_pub *sih)
614 {
615 struct si_info *sii = container_of(sih, struct si_info, pub);
616 struct bcma_device *cc;
617
618 if (!(ai_get_cccaps(sih) & CC_CAP_PWR_CTL))
619 return;
620
621 cc = sii->icbus->drv_cc.core;
622 if (cc == NULL)
623 return;
624
625 /* set all Instaclk chip ILP to 1 MHz */
626 bcma_maskset32(cc, CHIPCREGOFFS(system_clk_ctl), SYCC_CD_MASK,
627 (ILP_DIV_1MHZ << SYCC_CD_SHIFT));
628
629 ai_clkctl_setdelay(sih, cc);
630 }
631
632 /*
633 * return the value suitable for writing to the
634 * dot11 core FAST_PWRUP_DELAY register
635 */
ai_clkctl_fast_pwrup_delay(struct si_pub * sih)636 u16 ai_clkctl_fast_pwrup_delay(struct si_pub *sih)
637 {
638 struct si_info *sii;
639 struct bcma_device *cc;
640 uint slowminfreq;
641 u16 fpdelay;
642
643 sii = container_of(sih, struct si_info, pub);
644 if (ai_get_cccaps(sih) & CC_CAP_PMU) {
645 fpdelay = si_pmu_fast_pwrup_delay(sih);
646 return fpdelay;
647 }
648
649 if (!(ai_get_cccaps(sih) & CC_CAP_PWR_CTL))
650 return 0;
651
652 fpdelay = 0;
653 cc = sii->icbus->drv_cc.core;
654 if (cc) {
655 slowminfreq = ai_slowclk_freq(sih, false, cc);
656 fpdelay = (((bcma_read32(cc, CHIPCREGOFFS(pll_on_delay)) + 2)
657 * 1000000) + (slowminfreq - 1)) / slowminfreq;
658 }
659 return fpdelay;
660 }
661
662 /*
663 * clock control policy function throught chipcommon
664 *
665 * set dynamic clk control mode (forceslow, forcefast, dynamic)
666 * returns true if we are forcing fast clock
667 * this is a wrapper over the next internal function
668 * to allow flexible policy settings for outside caller
669 */
ai_clkctl_cc(struct si_pub * sih,enum bcma_clkmode mode)670 bool ai_clkctl_cc(struct si_pub *sih, enum bcma_clkmode mode)
671 {
672 struct si_info *sii;
673 struct bcma_device *cc;
674
675 sii = container_of(sih, struct si_info, pub);
676
677 cc = sii->icbus->drv_cc.core;
678 bcma_core_set_clockmode(cc, mode);
679 return mode == BCMA_CLKMODE_FAST;
680 }
681
682 /* Enable BT-COEX & Ex-PA for 4313 */
ai_epa_4313war(struct si_pub * sih)683 void ai_epa_4313war(struct si_pub *sih)
684 {
685 struct si_info *sii = container_of(sih, struct si_info, pub);
686 struct bcma_device *cc;
687
688 cc = sii->icbus->drv_cc.core;
689
690 /* EPA Fix */
691 bcma_set32(cc, CHIPCREGOFFS(gpiocontrol), GPIO_CTRL_EPA_EN_MASK);
692 }
693
694 /* check if the device is removed */
ai_deviceremoved(struct si_pub * sih)695 bool ai_deviceremoved(struct si_pub *sih)
696 {
697 u32 w = 0;
698 struct si_info *sii;
699
700 sii = container_of(sih, struct si_info, pub);
701
702 if (sii->icbus->hosttype != BCMA_HOSTTYPE_PCI)
703 return false;
704
705 pci_read_config_dword(sii->pcibus, PCI_VENDOR_ID, &w);
706 if ((w & 0xFFFF) != PCI_VENDOR_ID_BROADCOM)
707 return true;
708
709 return false;
710 }
711
