Staging: bcm: silence off by one warning
[deliverable/linux.git] / drivers / staging / brcm80211 / include / siutils.h
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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
17#ifndef _siutils_h_
18#define _siutils_h_
19
20#include <hndsoc.h>
21
22#if !defined(WLC_LOW)
23#include "bcm_rpc.h"
24#endif
25/*
26 * Data structure to export all chip specific common variables
27 * public (read-only) portion of siutils handle returned by si_attach()
28 */
29struct si_pub {
30 uint socitype; /* SOCI_SB, SOCI_AI */
31
32 uint bustype; /* SI_BUS, PCI_BUS */
33 uint buscoretype; /* PCI_CORE_ID, PCIE_CORE_ID, PCMCIA_CORE_ID */
34 uint buscorerev; /* buscore rev */
35 uint buscoreidx; /* buscore index */
36 int ccrev; /* chip common core rev */
37 uint32 cccaps; /* chip common capabilities */
38 uint32 cccaps_ext; /* chip common capabilities extension */
39 int pmurev; /* pmu core rev */
40 uint32 pmucaps; /* pmu capabilities */
41 uint boardtype; /* board type */
42 uint boardvendor; /* board vendor */
43 uint boardflags; /* board flags */
44 uint boardflags2; /* board flags2 */
45 uint chip; /* chip number */
46 uint chiprev; /* chip revision */
47 uint chippkg; /* chip package option */
48 uint32 chipst; /* chip status */
49 bool issim; /* chip is in simulation or emulation */
50 uint socirev; /* SOC interconnect rev */
51 bool pci_pr32414;
52
53#if !defined(WLC_LOW)
54 rpc_info_t *rpc;
55#endif
56};
57
58/* for HIGH_ONLY driver, the si_t must be writable to allow states sync from BMAC to HIGH driver
59 * for monolithic driver, it is readonly to prevent accident change
60 */
61#if !defined(WLC_LOW)
62typedef struct si_pub si_t;
63#else
64typedef const struct si_pub si_t;
65#endif
66
67/*
68 * Many of the routines below take an 'sih' handle as their first arg.
69 * Allocate this by calling si_attach(). Free it by calling si_detach().
70 * At any one time, the sih is logically focused on one particular si core
71 * (the "current core").
72 * Use si_setcore() or si_setcoreidx() to change the association to another core.
73 */
74
75#define BADIDX (SI_MAXCORES + 1)
76
77/* clkctl xtal what flags */
78#define XTAL 0x1 /* primary crystal oscillator (2050) */
79#define PLL 0x2 /* main chip pll */
80
81/* clkctl clk mode */
82#define CLK_FAST 0 /* force fast (pll) clock */
83#define CLK_DYNAMIC 2 /* enable dynamic clock control */
84
85/* GPIO usage priorities */
86#define GPIO_DRV_PRIORITY 0 /* Driver */
87#define GPIO_APP_PRIORITY 1 /* Application */
88#define GPIO_HI_PRIORITY 2 /* Highest priority. Ignore GPIO reservation */
89
90/* GPIO pull up/down */
91#define GPIO_PULLUP 0
92#define GPIO_PULLDN 1
93
94/* GPIO event regtype */
95#define GPIO_REGEVT 0 /* GPIO register event */
96#define GPIO_REGEVT_INTMSK 1 /* GPIO register event int mask */
97#define GPIO_REGEVT_INTPOL 2 /* GPIO register event int polarity */
98
99/* device path */
100#define SI_DEVPATH_BUFSZ 16 /* min buffer size in bytes */
101
102/* SI routine enumeration: to be used by update function with multiple hooks */
103#define SI_DOATTACH 1
104#define SI_PCIDOWN 2
105#define SI_PCIUP 3
106
107#define ISSIM_ENAB(sih) 0
108
109/* PMU clock/power control */
110#if defined(BCMPMUCTL)
111#define PMUCTL_ENAB(sih) (BCMPMUCTL)
112#else
113#define PMUCTL_ENAB(sih) ((sih)->cccaps & CC_CAP_PMU)
114#endif
115
116/* chipcommon clock/power control (exclusive with PMU's) */
117#if defined(BCMPMUCTL) && BCMPMUCTL
118#define CCCTL_ENAB(sih) (0)
119#define CCPLL_ENAB(sih) (0)
120#else
121#define CCCTL_ENAB(sih) ((sih)->cccaps & CC_CAP_PWR_CTL)
122#define CCPLL_ENAB(sih) ((sih)->cccaps & CC_CAP_PLL_MASK)
123#endif
124
125typedef void (*gpio_handler_t) (uint32 stat, void *arg);
126
127/* External PA enable mask */
128#define GPIO_CTRL_EPA_EN_MASK 0x40
129
130/* === exported functions === */
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131extern si_t *si_attach(uint pcidev, osl_t *osh, void *regs, uint bustype,
132 void *sdh, char **vars, uint *varsz);
133
134extern void si_detach(si_t *sih);
135extern bool si_pci_war16165(si_t *sih);
136
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137extern uint si_coreid(si_t *sih);
138extern uint si_flag(si_t *sih);
7cc4a4c0 139extern uint si_coreidx(si_t *sih);
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140extern uint si_corerev(si_t *sih);
141extern void *si_osh(si_t *sih);
7cc4a4c0 142extern uint si_corereg(si_t *sih, uint coreidx, uint regoff, uint mask,
1e3950b8 143 uint val);
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144extern void si_write_wrapperreg(si_t *sih, uint32 offset, uint32 val);
145extern uint32 si_core_cflags(si_t *sih, uint32 mask, uint32 val);
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146extern uint32 si_core_sflags(si_t *sih, uint32 mask, uint32 val);
147extern bool si_iscoreup(si_t *sih);
148extern uint si_findcoreidx(si_t *sih, uint coreid, uint coreunit);
a9533e7e 149#ifndef BCMSDIO
7cc4a4c0 150extern void *si_setcoreidx(si_t *sih, uint coreidx);
a9533e7e 151#endif
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152extern void *si_setcore(si_t *sih, uint coreid, uint coreunit);
153extern void *si_switch_core(si_t *sih, uint coreid, uint *origidx,
154 uint *intr_val);
155extern void si_restore_core(si_t *sih, uint coreid, uint intr_val);
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156extern void si_core_reset(si_t *sih, uint32 bits, uint32 resetbits);
157extern void si_core_disable(si_t *sih, uint32 bits);
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158extern uint32 si_alp_clock(si_t *sih);
159extern uint32 si_ilp_clock(si_t *sih);
160extern void si_pci_setup(si_t *sih, uint coremask);
161extern void si_setint(si_t *sih, int siflag);
162extern bool si_backplane64(si_t *sih);
163extern void si_register_intr_callback(si_t *sih, void *intrsoff_fn,
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164 void *intrsrestore_fn,
165 void *intrsenabled_fn, void *intr_arg);
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166extern void si_deregister_intr_callback(si_t *sih);
167extern void si_clkctl_init(si_t *sih);
7d4df48e 168extern u16 si_clkctl_fast_pwrup_delay(si_t *sih);
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169extern bool si_clkctl_cc(si_t *sih, uint mode);
170extern int si_clkctl_xtal(si_t *sih, uint what, bool on);
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171extern bool si_deviceremoved(si_t *sih);
172extern uint32 si_socram_size(si_t *sih);
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173
174extern void si_watchdog(si_t *sih, uint ticks);
7cc4a4c0 175extern uint32 si_gpiocontrol(si_t *sih, uint32 mask, uint32 val,
de9bca63 176 u8 priority);
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177
178#ifdef BCMSDIO
7cc4a4c0 179extern void si_sdio_init(si_t *sih);
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180#endif
181
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182#define si_eci(sih) 0
183#define si_eci_init(sih) (0)
184#define si_eci_notify_bt(sih, type, val) (0)
185#define si_seci(sih) 0
de9bca63 186static inline void *si_seci_init(si_t *sih, u8 use_seci)
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187{
188 return NULL;
189}
190
191/* OTP status */
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192extern bool si_is_otp_disabled(si_t *sih);
193extern bool si_is_otp_powered(si_t *sih);
194extern void si_otp_power(si_t *sih, bool on);
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195
196/* SPROM availability */
7cc4a4c0 197extern bool si_is_sprom_available(si_t *sih);
a9533e7e 198#ifdef SI_SPROM_PROBE
7cc4a4c0 199extern void si_sprom_init(si_t *sih);
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200#endif /* SI_SPROM_PROBE */
201
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202#define SI_ERROR(args)
203
204#ifdef BCMDBG
205#define SI_MSG(args) printf args
206#else
207#define SI_MSG(args)
208#endif /* BCMDBG */
209
210/* Define SI_VMSG to printf for verbose debugging, but don't check it in */
211#define SI_VMSG(args)
212
213#define IS_SIM(chippkg) ((chippkg == HDLSIM_PKG_ID) || (chippkg == HWSIM_PKG_ID))
214
215typedef uint32(*si_intrsoff_t) (void *intr_arg);
216typedef void (*si_intrsrestore_t) (void *intr_arg, uint32 arg);
217typedef bool(*si_intrsenabled_t) (void *intr_arg);
218
219typedef struct gpioh_item {
220 void *arg;
221 bool level;
222 gpio_handler_t handler;
223 uint32 event;
224 struct gpioh_item *next;
225} gpioh_item_t;
226
227/* misc si info needed by some of the routines */
228typedef struct si_info {
229 struct si_pub pub; /* back plane public state (must be first field) */
230 void *osh; /* osl os handle */
231 void *sdh; /* bcmsdh handle */
232 uint dev_coreid; /* the core provides driver functions */
233 void *intr_arg; /* interrupt callback function arg */
234 si_intrsoff_t intrsoff_fn; /* turns chip interrupts off */
235 si_intrsrestore_t intrsrestore_fn; /* restore chip interrupts */
236 si_intrsenabled_t intrsenabled_fn; /* check if interrupts are enabled */
237
238 void *pch; /* PCI/E core handle */
239
240 gpioh_item_t *gpioh_head; /* GPIO event handlers list */
241
242 bool memseg; /* flag to toggle MEM_SEG register */
243
244 char *vars;
245 uint varsz;
246
247 void *curmap; /* current regs va */
248 void *regs[SI_MAXCORES]; /* other regs va */
249
250 uint curidx; /* current core index */
251 uint numcores; /* # discovered cores */
252 uint coreid[SI_MAXCORES]; /* id of each core */
253 uint32 coresba[SI_MAXCORES]; /* backplane address of each core */
254 void *regs2[SI_MAXCORES]; /* va of each core second register set (usbh20) */
255 uint32 coresba2[SI_MAXCORES]; /* address of each core second register set (usbh20) */
256 uint32 coresba_size[SI_MAXCORES]; /* backplane address space size */
257 uint32 coresba2_size[SI_MAXCORES]; /* second address space size */
258
259 void *curwrap; /* current wrapper va */
260 void *wrappers[SI_MAXCORES]; /* other cores wrapper va */
261 uint32 wrapba[SI_MAXCORES]; /* address of controlling wrapper */
262
263 uint32 cia[SI_MAXCORES]; /* erom cia entry for each core */
264 uint32 cib[SI_MAXCORES]; /* erom cia entry for each core */
265 uint32 oob_router; /* oob router registers for axi */
266} si_info_t;
267
268#define SI_INFO(sih) (si_info_t *)(uintptr)sih
269
270#define GOODCOREADDR(x, b) (((x) >= (b)) && ((x) < ((b) + SI_MAXCORES * SI_CORE_SIZE)) && \
271 ISALIGNED((x), SI_CORE_SIZE))
272#define GOODREGS(regs) ((regs) != NULL && ISALIGNED((uintptr)(regs), SI_CORE_SIZE))
273#define BADCOREADDR 0
274#define GOODIDX(idx) (((uint)idx) < SI_MAXCORES)
275#define NOREV -1 /* Invalid rev */
276
277/* Newer chips can access PCI/PCIE and CC core without requiring to change
278 * PCI BAR0 WIN
279 */
280#define SI_FAST(si) (((si)->pub.buscoretype == PCIE_CORE_ID) || \
281 (((si)->pub.buscoretype == PCI_CORE_ID) && (si)->pub.buscorerev >= 13))
282
283#define PCIEREGS(si) (((char *)((si)->curmap) + PCI_16KB0_PCIREGS_OFFSET))
284#define CCREGS_FAST(si) (((char *)((si)->curmap) + PCI_16KB0_CCREGS_OFFSET))
285
286/*
287 * Macros to disable/restore function core(D11, ENET, ILINE20, etc) interrupts
288 * before after core switching to avoid invalid register accesss inside ISR.
289 */
290#define INTR_OFF(si, intr_val) \
291 if ((si)->intrsoff_fn && (si)->coreid[(si)->curidx] == (si)->dev_coreid) { \
292 intr_val = (*(si)->intrsoff_fn)((si)->intr_arg); }
293#define INTR_RESTORE(si, intr_val) \
294 if ((si)->intrsrestore_fn && (si)->coreid[(si)->curidx] == (si)->dev_coreid) { \
295 (*(si)->intrsrestore_fn)((si)->intr_arg, intr_val); }
296
297/* dynamic clock control defines */
298#define LPOMINFREQ 25000 /* low power oscillator min */
299#define LPOMAXFREQ 43000 /* low power oscillator max */
300#define XTALMINFREQ 19800000 /* 20 MHz - 1% */
301#define XTALMAXFREQ 20200000 /* 20 MHz + 1% */
302#define PCIMINFREQ 25000000 /* 25 MHz */
303#define PCIMAXFREQ 34000000 /* 33 MHz + fudge */
304
305#define ILP_DIV_5MHZ 0 /* ILP = 5 MHz */
306#define ILP_DIV_1MHZ 4 /* ILP = 1 MHz */
307
308#define PCI(si) ((BUSTYPE((si)->pub.bustype) == PCI_BUS) && \
309 ((si)->pub.buscoretype == PCI_CORE_ID))
310#define PCIE(si) ((BUSTYPE((si)->pub.bustype) == PCI_BUS) && \
311 ((si)->pub.buscoretype == PCIE_CORE_ID))
312#define PCI_FORCEHT(si) \
313 (PCIE(si) && (si->pub.chip == BCM4716_CHIP_ID))
314
315/* GPIO Based LED powersave defines */
316#define DEFAULT_GPIO_ONTIME 10 /* Default: 10% on */
317#define DEFAULT_GPIO_OFFTIME 90 /* Default: 10% on */
318
319#ifndef DEFAULT_GPIOTIMERVAL
320#define DEFAULT_GPIOTIMERVAL ((DEFAULT_GPIO_ONTIME << GPIO_ONTIME_SHIFT) | DEFAULT_GPIO_OFFTIME)
321#endif
322
323/*
324 * Build device path. Path size must be >= SI_DEVPATH_BUFSZ.
325 * The returned path is NULL terminated and has trailing '/'.
326 * Return 0 on success, nonzero otherwise.
327 */
7cc4a4c0 328extern int si_devpath(si_t *sih, char *path, int size);
a9533e7e 329/* Read variable with prepending the devpath to the name */
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330extern char *si_getdevpathvar(si_t *sih, const char *name);
331extern int si_getdevpathintvar(si_t *sih, const char *name);
332
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333extern void si_war42780_clkreq(si_t *sih, bool clkreq);
334extern void si_pci_sleep(si_t *sih);
335extern void si_pci_down(si_t *sih);
336extern void si_pci_up(si_t *sih);
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337extern void si_pcie_extendL1timer(si_t *sih, bool extend);
338extern int si_pci_fixcfg(si_t *sih);
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339
340extern void si_chipcontrl_epa4331(si_t *sih, bool on);
a9533e7e 341/* Enable Ex-PA for 4313 */
7cc4a4c0 342extern void si_epa_4313war(si_t *sih);
a9533e7e 343
7cc4a4c0 344char *si_getnvramflvar(si_t *sih, const char *name);
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345
346/* AMBA Interconnect exported externs */
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347extern si_t *ai_attach(uint pcidev, osl_t *osh, void *regs, uint bustype,
348 void *sdh, char **vars, uint *varsz);
349extern si_t *ai_kattach(osl_t *osh);
350extern void ai_scan(si_t *sih, void *regs, uint devid);
351
352extern uint ai_flag(si_t *sih);
353extern void ai_setint(si_t *sih, int siflag);
354extern uint ai_coreidx(si_t *sih);
355extern uint ai_corevendor(si_t *sih);
356extern uint ai_corerev(si_t *sih);
357extern bool ai_iscoreup(si_t *sih);
358extern void *ai_setcoreidx(si_t *sih, uint coreidx);
359extern uint32 ai_core_cflags(si_t *sih, uint32 mask, uint32 val);
360extern void ai_core_cflags_wo(si_t *sih, uint32 mask, uint32 val);
361extern uint32 ai_core_sflags(si_t *sih, uint32 mask, uint32 val);
362extern uint ai_corereg(si_t *sih, uint coreidx, uint regoff, uint mask,
a9533e7e 363 uint val);
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364extern void ai_core_reset(si_t *sih, uint32 bits, uint32 resetbits);
365extern void ai_core_disable(si_t *sih, uint32 bits);
366extern int ai_numaddrspaces(si_t *sih);
367extern uint32 ai_addrspace(si_t *sih, uint asidx);
368extern uint32 ai_addrspacesize(si_t *sih, uint asidx);
369extern void ai_write_wrap_reg(si_t *sih, uint32 offset, uint32 val);
a9533e7e 370
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371#ifdef BCMSDIO
372#define si_setcoreidx(sih, idx) sb_setcoreidx(sih, idx)
373#define si_coreid(sih) sb_coreid(sih)
374#define si_corerev(sih) sb_corerev(sih)
375#endif
376
377#endif /* _siutils_h_ */
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