drivers/net/wireless/brcm80211/brcmsmac/aiutils.c

   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 #ifdef DEBUG
 322 #define SI_MSG(fmt, ...)        pr_debug(fmt, ##__VA_ARGS__)
 323 #else
 324 #define SI_MSG(fmt, ...)        no_printk(fmt, ##__VA_ARGS__)
 325 #endif                          /* DEBUG */
 326
 327 #define GOODCOREADDR(x, b) \
 328         (((x) >= (b)) && ((x) < ((b) + SI_MAXCORES * SI_CORE_SIZE)) && \
 329                 IS_ALIGNED((x), SI_CORE_SIZE))
 330
 331 struct aidmp {
 332         u32 oobselina30;        /* 0x000 */
 333         u32 oobselina74;        /* 0x004 */
 334         u32 PAD[6];
 335         u32 oobselinb30;        /* 0x020 */
 336         u32 oobselinb74;        /* 0x024 */
 337         u32 PAD[6];
 338         u32 oobselinc30;        /* 0x040 */
 339         u32 oobselinc74;        /* 0x044 */
 340         u32 PAD[6];
 341         u32 oobselind30;        /* 0x060 */
 342         u32 oobselind74;        /* 0x064 */
 343         u32 PAD[38];
 344         u32 oobselouta30;       /* 0x100 */
 345         u32 oobselouta74;       /* 0x104 */
 346         u32 PAD[6];
 347         u32 oobseloutb30;       /* 0x120 */
 348         u32 oobseloutb74;       /* 0x124 */
 349         u32 PAD[6];
 350         u32 oobseloutc30;       /* 0x140 */
 351         u32 oobseloutc74;       /* 0x144 */
 352         u32 PAD[6];
 353         u32 oobseloutd30;       /* 0x160 */
 354         u32 oobseloutd74;       /* 0x164 */
 355         u32 PAD[38];
 356         u32 oobsynca;   /* 0x200 */
 357         u32 oobseloutaen;       /* 0x204 */
 358         u32 PAD[6];
 359         u32 oobsyncb;   /* 0x220 */
 360         u32 oobseloutben;       /* 0x224 */
 361         u32 PAD[6];
 362         u32 oobsyncc;   /* 0x240 */
 363         u32 oobseloutcen;       /* 0x244 */
 364         u32 PAD[6];
 365         u32 oobsyncd;   /* 0x260 */
 366         u32 oobseloutden;       /* 0x264 */
 367         u32 PAD[38];
 368         u32 oobaextwidth;       /* 0x300 */
 369         u32 oobainwidth;        /* 0x304 */
 370         u32 oobaoutwidth;       /* 0x308 */
 371         u32 PAD[5];
 372         u32 oobbextwidth;       /* 0x320 */
 373         u32 oobbinwidth;        /* 0x324 */
 374         u32 oobboutwidth;       /* 0x328 */
 375         u32 PAD[5];
 376         u32 oobcextwidth;       /* 0x340 */
 377         u32 oobcinwidth;        /* 0x344 */
 378         u32 oobcoutwidth;       /* 0x348 */
 379         u32 PAD[5];
 380         u32 oobdextwidth;       /* 0x360 */
 381         u32 oobdinwidth;        /* 0x364 */
 382         u32 oobdoutwidth;       /* 0x368 */
 383         u32 PAD[37];
 384         u32 ioctrlset;  /* 0x400 */
 385         u32 ioctrlclear;        /* 0x404 */
 386         u32 ioctrl;             /* 0x408 */
 387         u32 PAD[61];
 388         u32 iostatus;   /* 0x500 */
 389         u32 PAD[127];
 390         u32 ioctrlwidth;        /* 0x700 */
 391         u32 iostatuswidth;      /* 0x704 */
 392         u32 PAD[62];
 393         u32 resetctrl;  /* 0x800 */
 394         u32 resetstatus;        /* 0x804 */
 395         u32 resetreadid;        /* 0x808 */
 396         u32 resetwriteid;       /* 0x80c */
 397         u32 PAD[60];
 398         u32 errlogctrl; /* 0x900 */
 399         u32 errlogdone; /* 0x904 */
 400         u32 errlogstatus;       /* 0x908 */
 401         u32 errlogaddrlo;       /* 0x90c */
 402         u32 errlogaddrhi;       /* 0x910 */
 403         u32 errlogid;   /* 0x914 */
 404         u32 errloguser; /* 0x918 */
 405         u32 errlogflags;        /* 0x91c */
 406         u32 PAD[56];
 407         u32 intstatus;  /* 0xa00 */
 408         u32 PAD[127];
 409         u32 config;             /* 0xe00 */
 410         u32 PAD[63];
 411         u32 itcr;               /* 0xf00 */
 412         u32 PAD[3];
 413         u32 itipooba;   /* 0xf10 */
 414         u32 itipoobb;   /* 0xf14 */
 415         u32 itipoobc;   /* 0xf18 */
 416         u32 itipoobd;   /* 0xf1c */
 417         u32 PAD[4];
 418         u32 itipoobaout;        /* 0xf30 */
 419         u32 itipoobbout;        /* 0xf34 */
 420         u32 itipoobcout;        /* 0xf38 */
 421         u32 itipoobdout;        /* 0xf3c */
 422         u32 PAD[4];
 423         u32 itopooba;   /* 0xf50 */
 424         u32 itopoobb;   /* 0xf54 */
 425         u32 itopoobc;   /* 0xf58 */
 426         u32 itopoobd;   /* 0xf5c */
 427         u32 PAD[4];
 428         u32 itopoobain; /* 0xf70 */
 429         u32 itopoobbin; /* 0xf74 */
 430         u32 itopoobcin; /* 0xf78 */
 431         u32 itopoobdin; /* 0xf7c */
 432         u32 PAD[4];
 433         u32 itopreset;  /* 0xf90 */
 434         u32 PAD[15];
 435         u32 peripherialid4;     /* 0xfd0 */
 436         u32 peripherialid5;     /* 0xfd4 */
 437         u32 peripherialid6;     /* 0xfd8 */
 438         u32 peripherialid7;     /* 0xfdc */
 439         u32 peripherialid0;     /* 0xfe0 */
 440         u32 peripherialid1;     /* 0xfe4 */
 441         u32 peripherialid2;     /* 0xfe8 */
 442         u32 peripherialid3;     /* 0xfec */
 443         u32 componentid0;       /* 0xff0 */
 444         u32 componentid1;       /* 0xff4 */
 445         u32 componentid2;       /* 0xff8 */
 446         u32 componentid3;       /* 0xffc */
 447 };
 448
 449 static bool
 450 ai_buscore_setup(struct si_info *sii, struct bcma_device *cc)
 451 {
 452         /* no cores found, bail out */
 453         if (cc->bus->nr_cores == 0)
 454                 return false;
 455
 456         /* get chipcommon rev */
 457         sii->pub.ccrev = cc->id.rev;
 458
 459         /* get chipcommon chipstatus */
 460         sii->chipst = bcma_read32(cc, CHIPCREGOFFS(chipstatus));
 461
 462         /* get chipcommon capabilites */
 463         sii->pub.cccaps = bcma_read32(cc, CHIPCREGOFFS(capabilities));
 464
 465         /* get pmu rev and caps */
 466         if (ai_get_cccaps(&sii->pub) & CC_CAP_PMU) {
 467                 sii->pub.pmucaps = bcma_read32(cc,
 468                                                CHIPCREGOFFS(pmucapabilities));
 469                 sii->pub.pmurev = sii->pub.pmucaps & PCAP_REV_MASK;
 470         }
 471
 472         return true;
 473 }
 474
 475 static struct si_info *ai_doattach(struct si_info *sii,
 476                                    struct bcma_bus *pbus)
 477 {
 478         struct si_pub *sih = &sii->pub;
 479         struct bcma_device *cc;
 480
 481         sii->icbus = pbus;
 482         sii->pcibus = pbus->host_pci;
 483
 484         /* switch to Chipcommon core */
 485         cc = pbus->drv_cc.core;
 486
 487         sih->chip = pbus->chipinfo.id;
 488         sih->chiprev = pbus->chipinfo.rev;
 489         sih->chippkg = pbus->chipinfo.pkg;
 490         sih->boardvendor = pbus->boardinfo.vendor;
 491         sih->boardtype = pbus->boardinfo.type;
 492
 493         if (!ai_buscore_setup(sii, cc))
 494                 goto exit;
 495
 496         /* === NVRAM, clock is ready === */
 497         bcma_write32(cc, CHIPCREGOFFS(gpiopullup), 0);
 498         bcma_write32(cc, CHIPCREGOFFS(gpiopulldown), 0);
 499
 500         /* PMU specific initializations */
 501         if (ai_get_cccaps(sih) & CC_CAP_PMU) {
 502                 (void)si_pmu_measure_alpclk(sih);
 503         }
 504
 505         return sii;
 506
 507  exit:
 508
 509         return NULL;
 510 }
 511
 512 /*
 513  * Allocate a si handle and do the attach.
 514  */
 515 struct si_pub *
 516 ai_attach(struct bcma_bus *pbus)
 517 {
 518         struct si_info *sii;
 519
 520         /* alloc struct si_info */
 521         sii = kzalloc(sizeof(struct si_info), GFP_ATOMIC);
 522         if (sii == NULL)
 523                 return NULL;
 524
 525         if (ai_doattach(sii, pbus) == NULL) {
 526                 kfree(sii);
 527                 return NULL;
 528         }
 529
 530         return (struct si_pub *) sii;
 531 }
 532
 533 /* may be called with core in reset */
 534 void ai_detach(struct si_pub *sih)
 535 {
 536         struct si_info *sii;
 537
 538         struct si_pub *si_local = NULL;
 539         memcpy(&si_local, &sih, sizeof(struct si_pub **));
 540
 541         sii = container_of(sih, struct si_info, pub);
 542
 543         if (sii == NULL)
 544                 return;
 545
 546         kfree(sii);
 547 }
 548
 549 /*
 550  * read/modify chipcommon core register.
 551  */
 552 uint ai_cc_reg(struct si_pub *sih, uint regoff, u32 mask, u32 val)
 553 {
 554         struct bcma_device *cc;
 555         u32 w;
 556         struct si_info *sii;
 557
 558         sii = container_of(sih, struct si_info, pub);
 559         cc = sii->icbus->drv_cc.core;
 560
 561         /* mask and set */
 562         if (mask || val)
 563                 bcma_maskset32(cc, regoff, ~mask, val);
 564
 565         /* readback */
 566         w = bcma_read32(cc, regoff);
 567
 568         return w;
 569 }
 570
 571 /* return the slow clock source - LPO, XTAL, or PCI */
 572 static uint ai_slowclk_src(struct si_pub *sih, struct bcma_device *cc)
 573 {
 574         return SCC_SS_XTAL;
 575 }
 576
 577 /*
 578 * return the ILP (slowclock) min or max frequency
 579 * precondition: we've established the chip has dynamic clk control
 580 */
 581 static uint ai_slowclk_freq(struct si_pub *sih, bool max_freq,
 582                             struct bcma_device *cc)
 583 {
 584         uint div;
 585
 586         /* Chipc rev 10 is InstaClock */
 587         div = bcma_read32(cc, CHIPCREGOFFS(system_clk_ctl));
 588         div = 4 * ((div >> SYCC_CD_SHIFT) + 1);
 589         return max_freq ? XTALMAXFREQ : (XTALMINFREQ / div);
 590 }
 591
 592 static void
 593 ai_clkctl_setdelay(struct si_pub *sih, struct bcma_device *cc)
 594 {
 595         uint slowmaxfreq, pll_delay, slowclk;
 596         uint pll_on_delay, fref_sel_delay;
 597
 598         pll_delay = PLL_DELAY;
 599
 600         /*
 601          * If the slow clock is not sourced by the xtal then
 602          * add the xtal_on_delay since the xtal will also be
 603          * powered down by dynamic clk control logic.
 604          */
 605
 606         slowclk = ai_slowclk_src(sih, cc);
 607         if (slowclk != SCC_SS_XTAL)
 608                 pll_delay += XTAL_ON_DELAY;
 609
 610         /* Starting with 4318 it is ILP that is used for the delays */
 611         slowmaxfreq =
 612             ai_slowclk_freq(sih, false, cc);
 613
 614         pll_on_delay = ((slowmaxfreq * pll_delay) + 999999) / 1000000;
 615         fref_sel_delay = ((slowmaxfreq * FREF_DELAY) + 999999) / 1000000;
 616
 617         bcma_write32(cc, CHIPCREGOFFS(pll_on_delay), pll_on_delay);
 618         bcma_write32(cc, CHIPCREGOFFS(fref_sel_delay), fref_sel_delay);
 619 }
 620
 621 /* initialize power control delay registers */
 622 void ai_clkctl_init(struct si_pub *sih)
 623 {
 624         struct si_info *sii = container_of(sih, struct si_info, pub);
 625         struct bcma_device *cc;
 626
 627         if (!(ai_get_cccaps(sih) & CC_CAP_PWR_CTL))
 628                 return;
 629
 630         cc = sii->icbus->drv_cc.core;
 631         if (cc == NULL)
 632                 return;
 633
 634         /* set all Instaclk chip ILP to 1 MHz */
 635         bcma_maskset32(cc, CHIPCREGOFFS(system_clk_ctl), SYCC_CD_MASK,
 636                        (ILP_DIV_1MHZ << SYCC_CD_SHIFT));
 637
 638         ai_clkctl_setdelay(sih, cc);
 639 }
 640
 641 /*
 642  * return the value suitable for writing to the
 643  * dot11 core FAST_PWRUP_DELAY register
 644  */
 645 u16 ai_clkctl_fast_pwrup_delay(struct si_pub *sih)
 646 {
 647         struct si_info *sii;
 648         struct bcma_device *cc;
 649         uint slowminfreq;
 650         u16 fpdelay;
 651
 652         sii = container_of(sih, struct si_info, pub);
 653         if (ai_get_cccaps(sih) & CC_CAP_PMU) {
 654                 fpdelay = si_pmu_fast_pwrup_delay(sih);
 655                 return fpdelay;
 656         }
 657
 658         if (!(ai_get_cccaps(sih) & CC_CAP_PWR_CTL))
 659                 return 0;
 660
 661         fpdelay = 0;
 662         cc = sii->icbus->drv_cc.core;
 663         if (cc) {
 664                 slowminfreq = ai_slowclk_freq(sih, false, cc);
 665                 fpdelay = (((bcma_read32(cc, CHIPCREGOFFS(pll_on_delay)) + 2)
 666                             * 1000000) + (slowminfreq - 1)) / slowminfreq;
 667         }
 668         return fpdelay;
 669 }
 670
 671 /*
 672  *  clock control policy function throught chipcommon
 673  *
 674  *    set dynamic clk control mode (forceslow, forcefast, dynamic)
 675  *    returns true if we are forcing fast clock
 676  *    this is a wrapper over the next internal function
 677  *      to allow flexible policy settings for outside caller
 678  */
 679 bool ai_clkctl_cc(struct si_pub *sih, enum bcma_clkmode mode)
 680 {
 681         struct si_info *sii;
 682         struct bcma_device *cc;
 683
 684         sii = container_of(sih, struct si_info, pub);
 685
 686         cc = sii->icbus->drv_cc.core;
 687         bcma_core_set_clockmode(cc, mode);
 688         return mode == BCMA_CLKMODE_FAST;
 689 }
 690
 691 void ai_pci_up(struct si_pub *sih)
 692 {
 693         struct si_info *sii;
 694
 695         sii = container_of(sih, struct si_info, pub);
 696
 697         if (sii->icbus->hosttype == BCMA_HOSTTYPE_PCI)
 698                 bcma_core_pci_extend_L1timer(&sii->icbus->drv_pci, true);
 699 }
 700
 701 /* Unconfigure and/or apply various WARs when going down */
 702 void ai_pci_down(struct si_pub *sih)
 703 {
 704         struct si_info *sii;
 705
 706         sii = container_of(sih, struct si_info, pub);
 707
 708         if (sii->icbus->hosttype == BCMA_HOSTTYPE_PCI)
 709                 bcma_core_pci_extend_L1timer(&sii->icbus->drv_pci, false);
 710 }
 711
 712 /* Enable BT-COEX & Ex-PA for 4313 */
 713 void ai_epa_4313war(struct si_pub *sih)
 714 {
 715         struct si_info *sii = container_of(sih, struct si_info, pub);
 716         struct bcma_device *cc;
 717
 718         cc = sii->icbus->drv_cc.core;
 719
 720         /* EPA Fix */
 721         bcma_set32(cc, CHIPCREGOFFS(gpiocontrol), GPIO_CTRL_EPA_EN_MASK);
 722 }
 723
 724 /* check if the device is removed */
 725 bool ai_deviceremoved(struct si_pub *sih)
 726 {
 727         u32 w;
 728         struct si_info *sii;
 729
 730         sii = container_of(sih, struct si_info, pub);
 731
 732         if (sii->icbus->hosttype != BCMA_HOSTTYPE_PCI)
 733                 return false;
 734
 735         pci_read_config_dword(sii->pcibus, PCI_VENDOR_ID, &w);
 736         if ((w & 0xFFFF) != PCI_VENDOR_ID_BROADCOM)
 737                 return true;
 738
 739         return false;
 740 }