2 * Copyright (c) 2010 Broadcom Corporation
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.
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.
16 * File contents: support functions for PCI/PCIe
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21 #include <linux/delay.h>
22 #include <linux/pci.h>
25 #include <chipcommon.h>
26 #include <brcmu_utils.h>
27 #include <brcm_hw_ids.h>
36 /* slow clock source mask */
37 #define SCC_SS_MASK 0x00000007
38 /* source of slow clock is LPO */
39 #define SCC_SS_LPO 0x00000000
40 /* source of slow clock is crystal */
41 #define SCC_SS_XTAL 0x00000001
42 /* source of slow clock is PCI */
43 #define SCC_SS_PCI 0x00000002
44 /* LPOFreqSel, 1: 160Khz, 0: 32KHz */
45 #define SCC_LF 0x00000200
46 /* LPOPowerDown, 1: LPO is disabled, 0: LPO is enabled */
47 #define SCC_LP 0x00000400
48 /* ForceSlowClk, 1: sb/cores running on slow clock, 0: power logic control */
49 #define SCC_FS 0x00000800
50 /* IgnorePllOffReq, 1/0:
51 * power logic ignores/honors PLL clock disable requests from core
53 #define SCC_IP 0x00001000
54 /* XtalControlEn, 1/0:
55 * power logic does/doesn't disable crystal when appropriate
57 #define SCC_XC 0x00002000
58 /* XtalPU (RO), 1/0: crystal running/disabled */
59 #define SCC_XP 0x00004000
60 /* ClockDivider (SlowClk = 1/(4+divisor)) */
61 #define SCC_CD_MASK 0xffff0000
62 #define SCC_CD_SHIFT 16
65 /* ILPen: Enable Idle Low Power */
66 #define SYCC_IE 0x00000001
67 /* ALPen: Enable Active Low Power */
68 #define SYCC_AE 0x00000002
70 #define SYCC_FP 0x00000004
71 /* Force ALP (or HT if ALPen is not set */
72 #define SYCC_AR 0x00000008
74 #define SYCC_HR 0x00000010
75 /* ClkDiv (ILP = 1/(4 * (divisor + 1)) */
76 #define SYCC_CD_MASK 0xffff0000
77 #define SYCC_CD_SHIFT 16
79 #define CST4329_SPROM_OTP_SEL_MASK 0x00000003
80 /* OTP is powered up, use def. CIS, no SPROM */
81 #define CST4329_DEFCIS_SEL 0
82 /* OTP is powered up, SPROM is present */
83 #define CST4329_SPROM_SEL 1
84 /* OTP is powered up, no SPROM */
85 #define CST4329_OTP_SEL 2
86 /* OTP is powered down, SPROM is present */
87 #define CST4329_OTP_PWRDN 3
89 #define CST4329_SPI_SDIO_MODE_MASK 0x00000004
90 #define CST4329_SPI_SDIO_MODE_SHIFT 2
92 /* 43224 chip-specific ChipControl register bits */
93 #define CCTRL43224_GPIO_TOGGLE 0x8000
94 /* 12 mA drive strength */
95 #define CCTRL_43224A0_12MA_LED_DRIVE 0x00F000F0
96 /* 12 mA drive strength for later 43224s */
97 #define CCTRL_43224B0_12MA_LED_DRIVE 0xF0
99 /* 43236 Chip specific ChipStatus register bits */
100 #define CST43236_SFLASH_MASK 0x00000040
101 #define CST43236_OTP_MASK 0x00000080
102 #define CST43236_HSIC_MASK 0x00000100 /* USB/HSIC */
103 #define CST43236_BP_CLK 0x00000200 /* 120/96Mbps */
104 #define CST43236_BOOT_MASK 0x00001800
105 #define CST43236_BOOT_SHIFT 11
106 #define CST43236_BOOT_FROM_SRAM 0 /* boot from SRAM, ARM in reset */
107 #define CST43236_BOOT_FROM_ROM 1 /* boot from ROM */
108 #define CST43236_BOOT_FROM_FLASH 2 /* boot from FLASH */
109 #define CST43236_BOOT_FROM_INVALID 3
111 /* 4331 chip-specific ChipControl register bits */
113 #define CCTRL4331_BT_COEXIST (1<<0)
114 /* 0 SECI is disabled (JTAG functional) */
115 #define CCTRL4331_SECI (1<<1)
117 #define CCTRL4331_EXT_LNA (1<<2)
118 /* sprom/gpio13-15 mux */
119 #define CCTRL4331_SPROM_GPIO13_15 (1<<3)
120 /* 0 ext pa disable, 1 ext pa enabled */
121 #define CCTRL4331_EXTPA_EN (1<<4)
122 /* set drive out GPIO_CLK on sprom_cs pin */
123 #define CCTRL4331_GPIOCLK_ON_SPROMCS (1<<5)
124 /* use sprom_cs pin as PCIE mdio interface */
125 #define CCTRL4331_PCIE_MDIO_ON_SPROMCS (1<<6)
126 /* aband extpa will be at gpio2/5 and sprom_dout */
127 #define CCTRL4331_EXTPA_ON_GPIO2_5 (1<<7)
128 /* override core control on pipe_AuxClkEnable */
129 #define CCTRL4331_OVR_PIPEAUXCLKEN (1<<8)
130 /* override core control on pipe_AuxPowerDown */
131 #define CCTRL4331_OVR_PIPEAUXPWRDOWN (1<<9)
132 /* pcie_auxclkenable */
133 #define CCTRL4331_PCIE_AUXCLKEN (1<<10)
134 /* pcie_pipe_pllpowerdown */
135 #define CCTRL4331_PCIE_PIPE_PLLDOWN (1<<11)
136 /* enable bt_shd0 at gpio4 */
137 #define CCTRL4331_BT_SHD0_ON_GPIO4 (1<<16)
138 /* enable bt_shd1 at gpio5 */
139 #define CCTRL4331_BT_SHD1_ON_GPIO5 (1<<17)
141 /* 4331 Chip specific ChipStatus register bits */
142 /* crystal frequency 20/40Mhz */
143 #define CST4331_XTAL_FREQ 0x00000001
144 #define CST4331_SPROM_PRESENT 0x00000002
145 #define CST4331_OTP_PRESENT 0x00000004
146 #define CST4331_LDO_RF 0x00000008
147 #define CST4331_LDO_PAR 0x00000010
149 /* 4319 chip-specific ChipStatus register bits */
150 #define CST4319_SPI_CPULESSUSB 0x00000001
151 #define CST4319_SPI_CLK_POL 0x00000002
152 #define CST4319_SPI_CLK_PH 0x00000008
153 /* gpio [7:6], SDIO CIS selection */
154 #define CST4319_SPROM_OTP_SEL_MASK 0x000000c0
155 #define CST4319_SPROM_OTP_SEL_SHIFT 6
156 /* use default CIS, OTP is powered up */
157 #define CST4319_DEFCIS_SEL 0x00000000
158 /* use SPROM, OTP is powered up */
159 #define CST4319_SPROM_SEL 0x00000040
160 /* use OTP, OTP is powered up */
161 #define CST4319_OTP_SEL 0x00000080
162 /* use SPROM, OTP is powered down */
163 #define CST4319_OTP_PWRDN 0x000000c0
164 /* gpio [8], sdio/usb mode */
165 #define CST4319_SDIO_USB_MODE 0x00000100
166 #define CST4319_REMAP_SEL_MASK 0x00000600
167 #define CST4319_ILPDIV_EN 0x00000800
168 #define CST4319_XTAL_PD_POL 0x00001000
169 #define CST4319_LPO_SEL 0x00002000
170 #define CST4319_RES_INIT_MODE 0x0000c000
171 /* PALDO is configured with external PNP */
172 #define CST4319_PALDO_EXTPNP 0x00010000
173 #define CST4319_CBUCK_MODE_MASK 0x00060000
174 #define CST4319_CBUCK_MODE_BURST 0x00020000
175 #define CST4319_CBUCK_MODE_LPBURST 0x00060000
176 #define CST4319_RCAL_VALID 0x01000000
177 #define CST4319_RCAL_VALUE_MASK 0x3e000000
178 #define CST4319_RCAL_VALUE_SHIFT 25
180 /* 4336 chip-specific ChipStatus register bits */
181 #define CST4336_SPI_MODE_MASK 0x00000001
182 #define CST4336_SPROM_PRESENT 0x00000002
183 #define CST4336_OTP_PRESENT 0x00000004
184 #define CST4336_ARMREMAP_0 0x00000008
185 #define CST4336_ILPDIV_EN_MASK 0x00000010
186 #define CST4336_ILPDIV_EN_SHIFT 4
187 #define CST4336_XTAL_PD_POL_MASK 0x00000020
188 #define CST4336_XTAL_PD_POL_SHIFT 5
189 #define CST4336_LPO_SEL_MASK 0x00000040
190 #define CST4336_LPO_SEL_SHIFT 6
191 #define CST4336_RES_INIT_MODE_MASK 0x00000180
192 #define CST4336_RES_INIT_MODE_SHIFT 7
193 #define CST4336_CBUCK_MODE_MASK 0x00000600
194 #define CST4336_CBUCK_MODE_SHIFT 9
196 /* 4313 chip-specific ChipStatus register bits */
197 #define CST4313_SPROM_PRESENT 1
198 #define CST4313_OTP_PRESENT 2
199 #define CST4313_SPROM_OTP_SEL_MASK 0x00000002
200 #define CST4313_SPROM_OTP_SEL_SHIFT 0
202 /* 4313 Chip specific ChipControl register bits */
203 /* 12 mA drive strengh for later 4313 */
204 #define CCTRL_4313_12MA_LED_DRIVE 0x00000007
206 /* Manufacturer Ids */
207 #define MFGID_ARM 0x43b
208 #define MFGID_BRCM 0x4bf
209 #define MFGID_MIPS 0x4a7
211 /* Enumeration ROM registers */
212 #define ER_EROMENTRY 0x000
213 #define ER_REMAPCONTROL 0xe00
214 #define ER_REMAPSELECT 0xe04
215 #define ER_MASTERSELECT 0xe10
216 #define ER_ITCR 0xf00
217 #define ER_ITIP 0xf04
227 #define ER_BAD 0xffffffff
229 /* EROM CompIdentA */
230 #define CIA_MFG_MASK 0xfff00000
231 #define CIA_MFG_SHIFT 20
232 #define CIA_CID_MASK 0x000fff00
233 #define CIA_CID_SHIFT 8
234 #define CIA_CCL_MASK 0x000000f0
235 #define CIA_CCL_SHIFT 4
237 /* EROM CompIdentB */
238 #define CIB_REV_MASK 0xff000000
239 #define CIB_REV_SHIFT 24
240 #define CIB_NSW_MASK 0x00f80000
241 #define CIB_NSW_SHIFT 19
242 #define CIB_NMW_MASK 0x0007c000
243 #define CIB_NMW_SHIFT 14
244 #define CIB_NSP_MASK 0x00003e00
245 #define CIB_NSP_SHIFT 9
246 #define CIB_NMP_MASK 0x000001f0
247 #define CIB_NMP_SHIFT 4
250 #define AD_ADDR_MASK 0xfffff000
251 #define AD_SP_MASK 0x00000f00
252 #define AD_SP_SHIFT 8
253 #define AD_ST_MASK 0x000000c0
254 #define AD_ST_SHIFT 6
255 #define AD_ST_SLAVE 0x00000000
256 #define AD_ST_BRIDGE 0x00000040
257 #define AD_ST_SWRAP 0x00000080
258 #define AD_ST_MWRAP 0x000000c0
259 #define AD_SZ_MASK 0x00000030
260 #define AD_SZ_SHIFT 4
261 #define AD_SZ_4K 0x00000000
262 #define AD_SZ_8K 0x00000010
263 #define AD_SZ_16K 0x00000020
264 #define AD_SZ_SZD 0x00000030
265 #define AD_AG32 0x00000008
266 #define AD_ADDR_ALIGN 0x00000fff
267 #define AD_SZ_BASE 0x00001000 /* 4KB */
270 #define SD_SZ_MASK 0xfffff000
271 #define SD_SG32 0x00000008
272 #define SD_SZ_ALIGN 0x00000fff
274 /* PCI config space bit 4 for 4306c0 slow clock source */
275 #define PCI_CFG_GPIO_SCS 0x10
276 /* PCI config space GPIO 14 for Xtal power-up */
277 #define PCI_CFG_GPIO_XTAL 0x40
278 /* PCI config space GPIO 15 for PLL power-down */
279 #define PCI_CFG_GPIO_PLL 0x80
281 /* power control defines */
282 #define PLL_DELAY 150 /* us pll on delay */
283 #define FREF_DELAY 200 /* us fref change delay */
284 #define XTAL_ON_DELAY 1000 /* us crystal power-on delay */
289 #define NOREV -1 /* Invalid rev */
291 /* GPIO Based LED powersave defines */
292 #define DEFAULT_GPIO_ONTIME 10 /* Default: 10% on */
293 #define DEFAULT_GPIO_OFFTIME 90 /* Default: 10% on */
295 /* When Srom support present, fields in sromcontrol */
296 #define SRC_START 0x80000000
297 #define SRC_BUSY 0x80000000
298 #define SRC_OPCODE 0x60000000
299 #define SRC_OP_READ 0x00000000
300 #define SRC_OP_WRITE 0x20000000
301 #define SRC_OP_WRDIS 0x40000000
302 #define SRC_OP_WREN 0x60000000
303 #define SRC_OTPSEL 0x00000010
304 #define SRC_LOCK 0x00000008
305 #define SRC_SIZE_MASK 0x00000006
306 #define SRC_SIZE_1K 0x00000000
307 #define SRC_SIZE_4K 0x00000002
308 #define SRC_SIZE_16K 0x00000004
309 #define SRC_SIZE_SHIFT 1
310 #define SRC_PRESENT 0x00000001
312 /* External PA enable mask */
313 #define GPIO_CTRL_EPA_EN_MASK 0x40
315 #define DEFAULT_GPIOTIMERVAL \
316 ((DEFAULT_GPIO_ONTIME << GPIO_ONTIME_SHIFT) | DEFAULT_GPIO_OFFTIME)
318 #define BADIDX (SI_MAXCORES + 1)
320 #define IS_SIM(chippkg) \
321 ((chippkg == HDLSIM_PKG_ID) || (chippkg == HWSIM_PKG_ID))
323 #define PCI(sih) (ai_get_buscoretype(sih) == PCI_CORE_ID)
324 #define PCIE(sih) (ai_get_buscoretype(sih) == PCIE_CORE_ID)
326 #define PCI_FORCEHT(sih) (PCIE(sih) && (ai_get_chip_id(sih) == BCM4716_CHIP_ID))
329 #define SI_MSG(fmt, ...) pr_debug(fmt, ##__VA_ARGS__)
331 #define SI_MSG(fmt, ...) no_printk(fmt, ##__VA_ARGS__)
334 #define GOODCOREADDR(x, b) \
335 (((x) >= (b)) && ((x) < ((b) + SI_MAXCORES * SI_CORE_SIZE)) && \
336 IS_ALIGNED((x), SI_CORE_SIZE))
339 u32 oobselina30; /* 0x000 */
340 u32 oobselina74; /* 0x004 */
342 u32 oobselinb30; /* 0x020 */
343 u32 oobselinb74; /* 0x024 */
345 u32 oobselinc30; /* 0x040 */
346 u32 oobselinc74; /* 0x044 */
348 u32 oobselind30; /* 0x060 */
349 u32 oobselind74; /* 0x064 */
351 u32 oobselouta30; /* 0x100 */
352 u32 oobselouta74; /* 0x104 */
354 u32 oobseloutb30; /* 0x120 */
355 u32 oobseloutb74; /* 0x124 */
357 u32 oobseloutc30; /* 0x140 */
358 u32 oobseloutc74; /* 0x144 */
360 u32 oobseloutd30; /* 0x160 */
361 u32 oobseloutd74; /* 0x164 */
363 u32 oobsynca; /* 0x200 */
364 u32 oobseloutaen; /* 0x204 */
366 u32 oobsyncb; /* 0x220 */
367 u32 oobseloutben; /* 0x224 */
369 u32 oobsyncc; /* 0x240 */
370 u32 oobseloutcen; /* 0x244 */
372 u32 oobsyncd; /* 0x260 */
373 u32 oobseloutden; /* 0x264 */
375 u32 oobaextwidth; /* 0x300 */
376 u32 oobainwidth; /* 0x304 */
377 u32 oobaoutwidth; /* 0x308 */
379 u32 oobbextwidth; /* 0x320 */
380 u32 oobbinwidth; /* 0x324 */
381 u32 oobboutwidth; /* 0x328 */
383 u32 oobcextwidth; /* 0x340 */
384 u32 oobcinwidth; /* 0x344 */
385 u32 oobcoutwidth; /* 0x348 */
387 u32 oobdextwidth; /* 0x360 */
388 u32 oobdinwidth; /* 0x364 */
389 u32 oobdoutwidth; /* 0x368 */
391 u32 ioctrlset; /* 0x400 */
392 u32 ioctrlclear; /* 0x404 */
393 u32 ioctrl; /* 0x408 */
395 u32 iostatus; /* 0x500 */
397 u32 ioctrlwidth; /* 0x700 */
398 u32 iostatuswidth; /* 0x704 */
400 u32 resetctrl; /* 0x800 */
401 u32 resetstatus; /* 0x804 */
402 u32 resetreadid; /* 0x808 */
403 u32 resetwriteid; /* 0x80c */
405 u32 errlogctrl; /* 0x900 */
406 u32 errlogdone; /* 0x904 */
407 u32 errlogstatus; /* 0x908 */
408 u32 errlogaddrlo; /* 0x90c */
409 u32 errlogaddrhi; /* 0x910 */
410 u32 errlogid; /* 0x914 */
411 u32 errloguser; /* 0x918 */
412 u32 errlogflags; /* 0x91c */
414 u32 intstatus; /* 0xa00 */
416 u32 config; /* 0xe00 */
418 u32 itcr; /* 0xf00 */
420 u32 itipooba; /* 0xf10 */
421 u32 itipoobb; /* 0xf14 */
422 u32 itipoobc; /* 0xf18 */
423 u32 itipoobd; /* 0xf1c */
425 u32 itipoobaout; /* 0xf30 */
426 u32 itipoobbout; /* 0xf34 */
427 u32 itipoobcout; /* 0xf38 */
428 u32 itipoobdout; /* 0xf3c */
430 u32 itopooba; /* 0xf50 */
431 u32 itopoobb; /* 0xf54 */
432 u32 itopoobc; /* 0xf58 */
433 u32 itopoobd; /* 0xf5c */
435 u32 itopoobain; /* 0xf70 */
436 u32 itopoobbin; /* 0xf74 */
437 u32 itopoobcin; /* 0xf78 */
438 u32 itopoobdin; /* 0xf7c */
440 u32 itopreset; /* 0xf90 */
442 u32 peripherialid4; /* 0xfd0 */
443 u32 peripherialid5; /* 0xfd4 */
444 u32 peripherialid6; /* 0xfd8 */
445 u32 peripherialid7; /* 0xfdc */
446 u32 peripherialid0; /* 0xfe0 */
447 u32 peripherialid1; /* 0xfe4 */
448 u32 peripherialid2; /* 0xfe8 */
449 u32 peripherialid3; /* 0xfec */
450 u32 componentid0; /* 0xff0 */
451 u32 componentid1; /* 0xff4 */
452 u32 componentid2; /* 0xff8 */
453 u32 componentid3; /* 0xffc */
456 /* return true if PCIE capability exists in the pci config space */
457 static bool ai_ispcie(struct si_info *sii)
462 pcicore_find_pci_capability(sii->pcibus, PCI_CAP_ID_EXP, NULL,
470 static bool ai_buscore_prep(struct si_info *sii)
472 /* kludge to enable the clock on the 4306 which lacks a slowclock */
474 ai_clkctl_xtal(&sii->pub, XTAL | PLL, ON);
479 ai_buscore_setup(struct si_info *sii, struct bcma_device *cc)
481 struct bcma_device *pci = NULL;
482 struct bcma_device *pcie = NULL;
483 struct bcma_device *core;
486 /* no cores found, bail out */
487 if (cc->bus->nr_cores == 0)
490 /* get chipcommon rev */
491 sii->pub.ccrev = cc->id.rev;
493 /* get chipcommon chipstatus */
494 if (ai_get_ccrev(&sii->pub) >= 11)
495 sii->chipst = bcma_read32(cc, CHIPCREGOFFS(chipstatus));
497 /* get chipcommon capabilites */
498 sii->pub.cccaps = bcma_read32(cc, CHIPCREGOFFS(capabilities));
500 /* get pmu rev and caps */
501 if (ai_get_cccaps(&sii->pub) & CC_CAP_PMU) {
502 sii->pub.pmucaps = bcma_read32(cc,
503 CHIPCREGOFFS(pmucapabilities));
504 sii->pub.pmurev = sii->pub.pmucaps & PCAP_REV_MASK;
507 /* figure out buscore */
508 list_for_each_entry(core, &cc->bus->cores, list) {
514 if (cid == PCI_CORE_ID) {
516 } else if (cid == PCIE_CORE_ID) {
533 /* fixup necessary chip/core configurations */
535 sii->pch = pcicore_init(&sii->pub, sii->icbus->drv_pci.core);
536 if (sii->pch == NULL)
539 if (ai_pci_fixcfg(&sii->pub))
546 * get boardtype and boardrev
548 static __used void ai_nvram_process(struct si_info *sii)
552 /* do a pci config read to get subsystem id and subvendor id */
553 pci_read_config_dword(sii->pcibus, PCI_SUBSYSTEM_VENDOR_ID, &w);
555 sii->pub.boardvendor = w & 0xffff;
556 sii->pub.boardtype = (w >> 16) & 0xffff;
559 static struct si_info *ai_doattach(struct si_info *sii,
560 struct bcma_bus *pbus)
562 struct si_pub *sih = &sii->pub;
564 struct bcma_device *cc;
566 struct ssb_sprom *sprom = &pbus->sprom;
571 sii->pcibus = pbus->host_pci;
573 /* switch to Chipcommon core */
574 cc = pbus->drv_cc.core;
576 /* bus/core/clk setup for register access */
577 if (!ai_buscore_prep(sii))
581 * ChipID recognition.
582 * We assume we can read chipid at offset 0 from the regs arg.
583 * If we add other chiptypes (or if we need to support old sdio
584 * hosts w/o chipcommon), some way of recognizing them needs to
587 w = bcma_read32(cc, CHIPCREGOFFS(chipid));
588 socitype = (w & CID_TYPE_MASK) >> CID_TYPE_SHIFT;
589 /* Might as wll fill in chip id rev & pkg */
590 sih->chip = w & CID_ID_MASK;
591 sih->chiprev = (w & CID_REV_MASK) >> CID_REV_SHIFT;
592 sih->chippkg = (w & CID_PKG_MASK) >> CID_PKG_SHIFT;
595 if (socitype != SOCI_AI)
598 SI_MSG("Found chip type AI (0x%08x)\n", w);
599 if (!ai_buscore_setup(sii, cc))
602 ai_nvram_process(sii);
604 /* === NVRAM, clock is ready === */
605 bcma_write32(cc, CHIPCREGOFFS(gpiopullup), 0);
606 bcma_write32(cc, CHIPCREGOFFS(gpiopulldown), 0);
608 /* PMU specific initializations */
609 if (ai_get_cccaps(sih) & CC_CAP_PMU) {
611 (void)si_pmu_measure_alpclk(sih);
612 si_pmu_res_init(sih);
615 /* setup the GPIO based LED powersave register */
616 w = (sprom->leddc_on_time << BCMA_CC_GPIOTIMER_ONTIME_SHIFT) |
617 (sprom->leddc_off_time << BCMA_CC_GPIOTIMER_OFFTIME_SHIFT);
619 w = DEFAULT_GPIOTIMERVAL;
620 ai_cc_reg(sih, offsetof(struct chipcregs, gpiotimerval),
624 pcicore_attach(sii->pch, SI_DOATTACH);
626 if (ai_get_chip_id(sih) == BCM43224_CHIP_ID) {
628 * enable 12 mA drive strenth for 43224 and
629 * set chipControl register bit 15
631 if (ai_get_chiprev(sih) == 0) {
632 SI_MSG("Applying 43224A0 WARs\n");
633 ai_cc_reg(sih, offsetof(struct chipcregs, chipcontrol),
634 CCTRL43224_GPIO_TOGGLE,
635 CCTRL43224_GPIO_TOGGLE);
636 si_pmu_chipcontrol(sih, 0, CCTRL_43224A0_12MA_LED_DRIVE,
637 CCTRL_43224A0_12MA_LED_DRIVE);
639 if (ai_get_chiprev(sih) >= 1) {
640 SI_MSG("Applying 43224B0+ WARs\n");
641 si_pmu_chipcontrol(sih, 0, CCTRL_43224B0_12MA_LED_DRIVE,
642 CCTRL_43224B0_12MA_LED_DRIVE);
646 if (ai_get_chip_id(sih) == BCM4313_CHIP_ID) {
648 * enable 12 mA drive strenth for 4313 and
649 * set chipControl register bit 1
651 SI_MSG("Applying 4313 WARs\n");
652 si_pmu_chipcontrol(sih, 0, CCTRL_4313_12MA_LED_DRIVE,
653 CCTRL_4313_12MA_LED_DRIVE);
660 pcicore_deinit(sii->pch);
667 * Allocate a si handle and do the attach.
670 ai_attach(struct bcma_bus *pbus)
674 /* alloc struct si_info */
675 sii = kzalloc(sizeof(struct si_info), GFP_ATOMIC);
679 if (ai_doattach(sii, pbus) == NULL) {
684 return (struct si_pub *) sii;
687 /* may be called with core in reset */
688 void ai_detach(struct si_pub *sih)
692 struct si_pub *si_local = NULL;
693 memcpy(&si_local, &sih, sizeof(struct si_pub **));
695 sii = (struct si_info *)sih;
701 pcicore_deinit(sii->pch);
707 /* return index of coreid or BADIDX if not found */
708 struct bcma_device *ai_findcore(struct si_pub *sih, u16 coreid, u16 coreunit)
710 struct bcma_device *core;
714 sii = (struct si_info *)sih;
718 list_for_each_entry(core, &sii->icbus->cores, list)
719 if (core->id.id == coreid) {
720 if (found == coreunit)
729 * read/modify chipcommon core register.
731 uint ai_cc_reg(struct si_pub *sih, uint regoff, u32 mask, u32 val)
733 struct bcma_device *cc;
737 sii = (struct si_info *)sih;
738 cc = sii->icbus->drv_cc.core;
742 bcma_maskset32(cc, regoff, ~mask, val);
746 w = bcma_read32(cc, regoff);
751 /* return the slow clock source - LPO, XTAL, or PCI */
752 static uint ai_slowclk_src(struct si_pub *sih, struct bcma_device *cc)
757 sii = (struct si_info *)sih;
758 if (ai_get_ccrev(&sii->pub) < 6) {
759 pci_read_config_dword(sii->pcibus, PCI_GPIO_OUT,
761 if (val & PCI_CFG_GPIO_SCS)
764 } else if (ai_get_ccrev(&sii->pub) < 10) {
765 return bcma_read32(cc, CHIPCREGOFFS(slow_clk_ctl)) &
767 } else /* Insta-clock */
772 * return the ILP (slowclock) min or max frequency
773 * precondition: we've established the chip has dynamic clk control
775 static uint ai_slowclk_freq(struct si_pub *sih, bool max_freq,
776 struct bcma_device *cc)
781 slowclk = ai_slowclk_src(sih, cc);
782 if (ai_get_ccrev(sih) < 6) {
783 if (slowclk == SCC_SS_PCI)
784 return max_freq ? (PCIMAXFREQ / 64)
787 return max_freq ? (XTALMAXFREQ / 32)
788 : (XTALMINFREQ / 32);
789 } else if (ai_get_ccrev(sih) < 10) {
791 (((bcma_read32(cc, CHIPCREGOFFS(slow_clk_ctl)) &
792 SCC_CD_MASK) >> SCC_CD_SHIFT) + 1);
793 if (slowclk == SCC_SS_LPO)
794 return max_freq ? LPOMAXFREQ : LPOMINFREQ;
795 else if (slowclk == SCC_SS_XTAL)
796 return max_freq ? (XTALMAXFREQ / div)
797 : (XTALMINFREQ / div);
798 else if (slowclk == SCC_SS_PCI)
799 return max_freq ? (PCIMAXFREQ / div)
800 : (PCIMINFREQ / div);
802 /* Chipc rev 10 is InstaClock */
803 div = bcma_read32(cc, CHIPCREGOFFS(system_clk_ctl));
804 div = 4 * ((div >> SYCC_CD_SHIFT) + 1);
805 return max_freq ? XTALMAXFREQ : (XTALMINFREQ / div);
811 ai_clkctl_setdelay(struct si_pub *sih, struct bcma_device *cc)
813 uint slowmaxfreq, pll_delay, slowclk;
814 uint pll_on_delay, fref_sel_delay;
816 pll_delay = PLL_DELAY;
819 * If the slow clock is not sourced by the xtal then
820 * add the xtal_on_delay since the xtal will also be
821 * powered down by dynamic clk control logic.
824 slowclk = ai_slowclk_src(sih, cc);
825 if (slowclk != SCC_SS_XTAL)
826 pll_delay += XTAL_ON_DELAY;
828 /* Starting with 4318 it is ILP that is used for the delays */
831 (ai_get_ccrev(sih) >= 10) ? false : true, cc);
833 pll_on_delay = ((slowmaxfreq * pll_delay) + 999999) / 1000000;
834 fref_sel_delay = ((slowmaxfreq * FREF_DELAY) + 999999) / 1000000;
836 bcma_write32(cc, CHIPCREGOFFS(pll_on_delay), pll_on_delay);
837 bcma_write32(cc, CHIPCREGOFFS(fref_sel_delay), fref_sel_delay);
840 /* initialize power control delay registers */
841 void ai_clkctl_init(struct si_pub *sih)
843 struct bcma_device *cc;
845 if (!(ai_get_cccaps(sih) & CC_CAP_PWR_CTL))
848 cc = ai_findcore(sih, BCMA_CORE_CHIPCOMMON, 0);
852 /* set all Instaclk chip ILP to 1 MHz */
853 if (ai_get_ccrev(sih) >= 10)
854 bcma_maskset32(cc, CHIPCREGOFFS(system_clk_ctl), SYCC_CD_MASK,
855 (ILP_DIV_1MHZ << SYCC_CD_SHIFT));
857 ai_clkctl_setdelay(sih, cc);
861 * return the value suitable for writing to the
862 * dot11 core FAST_PWRUP_DELAY register
864 u16 ai_clkctl_fast_pwrup_delay(struct si_pub *sih)
867 struct bcma_device *cc;
871 sii = (struct si_info *)sih;
872 if (ai_get_cccaps(sih) & CC_CAP_PMU) {
873 fpdelay = si_pmu_fast_pwrup_delay(sih);
877 if (!(ai_get_cccaps(sih) & CC_CAP_PWR_CTL))
881 cc = ai_findcore(sih, CC_CORE_ID, 0);
883 slowminfreq = ai_slowclk_freq(sih, false, cc);
884 fpdelay = (((bcma_read32(cc, CHIPCREGOFFS(pll_on_delay)) + 2)
885 * 1000000) + (slowminfreq - 1)) / slowminfreq;
890 /* turn primary xtal and/or pll off/on */
891 int ai_clkctl_xtal(struct si_pub *sih, uint what, bool on)
896 sii = (struct si_info *)sih;
898 /* pcie core doesn't have any mapping to control the xtal pu */
902 pci_read_config_dword(sii->pcibus, PCI_GPIO_IN, &in);
903 pci_read_config_dword(sii->pcibus, PCI_GPIO_OUT, &out);
904 pci_read_config_dword(sii->pcibus, PCI_GPIO_OUTEN, &outen);
907 * Avoid glitching the clock if GPRS is already using it.
908 * We can't actually read the state of the PLLPD so we infer it
909 * by the value of XTAL_PU which *is* readable via gpioin.
911 if (on && (in & PCI_CFG_GPIO_XTAL))
915 outen |= PCI_CFG_GPIO_XTAL;
917 outen |= PCI_CFG_GPIO_PLL;
920 /* turn primary xtal on */
922 out |= PCI_CFG_GPIO_XTAL;
924 out |= PCI_CFG_GPIO_PLL;
925 pci_write_config_dword(sii->pcibus,
927 pci_write_config_dword(sii->pcibus,
928 PCI_GPIO_OUTEN, outen);
929 udelay(XTAL_ON_DELAY);
934 out &= ~PCI_CFG_GPIO_PLL;
935 pci_write_config_dword(sii->pcibus,
941 out &= ~PCI_CFG_GPIO_XTAL;
943 out |= PCI_CFG_GPIO_PLL;
944 pci_write_config_dword(sii->pcibus,
946 pci_write_config_dword(sii->pcibus,
947 PCI_GPIO_OUTEN, outen);
953 /* clk control mechanism through chipcommon, no policy checking */
954 static bool _ai_clkctl_cc(struct si_info *sii, uint mode)
956 struct bcma_device *cc;
959 /* chipcommon cores prior to rev6 don't support dynamic clock control */
960 if (ai_get_ccrev(&sii->pub) < 6)
963 cc = ai_findcore(&sii->pub, BCMA_CORE_CHIPCOMMON, 0);
965 if (!(ai_get_cccaps(&sii->pub) & CC_CAP_PWR_CTL) &&
966 (ai_get_ccrev(&sii->pub) < 20))
967 return mode == CLK_FAST;
970 case CLK_FAST: /* FORCEHT, fast (pll) clock */
971 if (ai_get_ccrev(&sii->pub) < 10) {
973 * don't forget to force xtal back
974 * on before we clear SCC_DYN_XTAL..
976 ai_clkctl_xtal(&sii->pub, XTAL, ON);
977 bcma_maskset32(cc, CHIPCREGOFFS(slow_clk_ctl),
978 (SCC_XC | SCC_FS | SCC_IP), SCC_IP);
979 } else if (ai_get_ccrev(&sii->pub) < 20) {
980 bcma_set32(cc, CHIPCREGOFFS(system_clk_ctl), SYCC_HR);
982 bcma_set32(cc, CHIPCREGOFFS(clk_ctl_st), CCS_FORCEHT);
985 /* wait for the PLL */
986 if (ai_get_cccaps(&sii->pub) & CC_CAP_PMU) {
987 u32 htavail = CCS_HTAVAIL;
988 SPINWAIT(((bcma_read32(cc, CHIPCREGOFFS(clk_ctl_st)) &
989 htavail) == 0), PMU_MAX_TRANSITION_DLY);
995 case CLK_DYNAMIC: /* enable dynamic clock control */
996 if (ai_get_ccrev(&sii->pub) < 10) {
997 scc = bcma_read32(cc, CHIPCREGOFFS(slow_clk_ctl));
998 scc &= ~(SCC_FS | SCC_IP | SCC_XC);
999 if ((scc & SCC_SS_MASK) != SCC_SS_XTAL)
1001 bcma_write32(cc, CHIPCREGOFFS(slow_clk_ctl), scc);
1004 * for dynamic control, we have to
1005 * release our xtal_pu "force on"
1008 ai_clkctl_xtal(&sii->pub, XTAL, OFF);
1009 } else if (ai_get_ccrev(&sii->pub) < 20) {
1011 bcma_mask32(cc, CHIPCREGOFFS(system_clk_ctl), ~SYCC_HR);
1013 bcma_mask32(cc, CHIPCREGOFFS(clk_ctl_st), ~CCS_FORCEHT);
1021 return mode == CLK_FAST;
1025 * clock control policy function throught chipcommon
1027 * set dynamic clk control mode (forceslow, forcefast, dynamic)
1028 * returns true if we are forcing fast clock
1029 * this is a wrapper over the next internal function
1030 * to allow flexible policy settings for outside caller
1032 bool ai_clkctl_cc(struct si_pub *sih, uint mode)
1034 struct si_info *sii;
1036 sii = (struct si_info *)sih;
1038 /* chipcommon cores prior to rev6 don't support dynamic clock control */
1039 if (ai_get_ccrev(sih) < 6)
1042 if (PCI_FORCEHT(sih))
1043 return mode == CLK_FAST;
1045 return _ai_clkctl_cc(sii, mode);
1048 void ai_pci_up(struct si_pub *sih)
1050 struct si_info *sii;
1052 sii = (struct si_info *)sih;
1054 if (PCI_FORCEHT(sih))
1055 _ai_clkctl_cc(sii, CLK_FAST);
1058 pcicore_up(sii->pch, SI_PCIUP);
1062 /* Unconfigure and/or apply various WARs when system is going to sleep mode */
1063 void ai_pci_sleep(struct si_pub *sih)
1065 struct si_info *sii;
1067 sii = (struct si_info *)sih;
1069 pcicore_sleep(sii->pch);
1072 /* Unconfigure and/or apply various WARs when going down */
1073 void ai_pci_down(struct si_pub *sih)
1075 struct si_info *sii;
1077 sii = (struct si_info *)sih;
1079 /* release FORCEHT since chip is going to "down" state */
1080 if (PCI_FORCEHT(sih))
1081 _ai_clkctl_cc(sii, CLK_DYNAMIC);
1083 pcicore_down(sii->pch, SI_PCIDOWN);
1087 * Configure the pci core for pci client (NIC) action
1088 * coremask is the bitvec of cores by index to be enabled.
1090 void ai_pci_setup(struct si_pub *sih, uint coremask)
1092 struct si_info *sii;
1095 sii = (struct si_info *)sih;
1098 * Enable sb->pci interrupts. Assume
1099 * PCI rev 2.3 support was added in pci core rev 6 and things changed..
1101 if (PCIE(sih) || (PCI(sih) && (ai_get_buscorerev(sih) >= 6))) {
1102 /* pci config write to set this core bit in PCIIntMask */
1103 pci_read_config_dword(sii->pcibus, PCI_INT_MASK, &w);
1104 w |= (coremask << PCI_SBIM_SHIFT);
1105 pci_write_config_dword(sii->pcibus, PCI_INT_MASK, w);
1109 pcicore_pci_setup(sii->pch);
1114 * Fixup SROMless PCI device's configuration.
1115 * The current core may be changed upon return.
1117 int ai_pci_fixcfg(struct si_pub *sih)
1119 struct si_info *sii = (struct si_info *)sih;
1121 /* Fixup PI in SROM shadow area to enable the correct PCI core access */
1122 /* check 'pi' is correct and fix it if not */
1123 pcicore_fixcfg(sii->pch);
1124 pcicore_hwup(sii->pch);
1128 /* mask&set gpiocontrol bits */
1129 u32 ai_gpiocontrol(struct si_pub *sih, u32 mask, u32 val, u8 priority)
1133 regoff = offsetof(struct chipcregs, gpiocontrol);
1134 return ai_cc_reg(sih, regoff, mask, val);
1137 void ai_chipcontrl_epa4331(struct si_pub *sih, bool on)
1139 struct bcma_device *cc;
1142 cc = ai_findcore(sih, CC_CORE_ID, 0);
1145 if (ai_get_chippkg(sih) == 9 || ai_get_chippkg(sih) == 0xb)
1146 /* Ext PA Controls for 4331 12x9 Package */
1147 bcma_set32(cc, CHIPCREGOFFS(chipcontrol),
1148 CCTRL4331_EXTPA_EN |
1149 CCTRL4331_EXTPA_ON_GPIO2_5);
1151 /* Ext PA Controls for 4331 12x12 Package */
1152 bcma_set32(cc, CHIPCREGOFFS(chipcontrol),
1153 CCTRL4331_EXTPA_EN);
1155 val &= ~(CCTRL4331_EXTPA_EN | CCTRL4331_EXTPA_ON_GPIO2_5);
1156 bcma_mask32(cc, CHIPCREGOFFS(chipcontrol),
1157 ~(CCTRL4331_EXTPA_EN | CCTRL4331_EXTPA_ON_GPIO2_5));
1161 /* Enable BT-COEX & Ex-PA for 4313 */
1162 void ai_epa_4313war(struct si_pub *sih)
1164 struct bcma_device *cc;
1166 cc = ai_findcore(sih, CC_CORE_ID, 0);
1169 bcma_set32(cc, CHIPCREGOFFS(gpiocontrol), GPIO_CTRL_EPA_EN_MASK);
1172 /* check if the device is removed */
1173 bool ai_deviceremoved(struct si_pub *sih)
1176 struct si_info *sii;
1178 sii = (struct si_info *)sih;
1180 pci_read_config_dword(sii->pcibus, PCI_VENDOR_ID, &w);
1181 if ((w & 0xFFFF) != PCI_VENDOR_ID_BROADCOM)
1187 uint ai_get_buscoretype(struct si_pub *sih)
1189 struct si_info *sii = (struct si_info *)sih;
1190 return sii->buscore->id.id;
1193 uint ai_get_buscorerev(struct si_pub *sih)
1195 struct si_info *sii = (struct si_info *)sih;
1196 return sii->buscore->id.rev;