diff options
Diffstat (limited to 'drivers/staging/brcm80211/brcmsmac/otp.c')
| -rw-r--r-- | drivers/staging/brcm80211/brcmsmac/otp.c | 545 |
1 files changed, 0 insertions, 545 deletions
diff --git a/drivers/staging/brcm80211/brcmsmac/otp.c b/drivers/staging/brcm80211/brcmsmac/otp.c deleted file mode 100644 index 4a70180eba5d..000000000000 --- a/drivers/staging/brcm80211/brcmsmac/otp.c +++ /dev/null @@ -1,545 +0,0 @@ -/* - * Copyright (c) 2010 Broadcom Corporation - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY - * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN - * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <linux/io.h> -#include <linux/errno.h> -#include <linux/string.h> - -#include <brcm_hw_ids.h> -#include <chipcommon.h> -#include "aiutils.h" -#include "otp.h" - -#define OTPS_GUP_MASK 0x00000f00 -#define OTPS_GUP_SHIFT 8 -#define OTPS_GUP_HW 0x00000100 /* h/w subregion is programmed */ -#define OTPS_GUP_SW 0x00000200 /* s/w subregion is programmed */ -#define OTPS_GUP_CI 0x00000400 /* chipid/pkgopt subregion is programmed */ -#define OTPS_GUP_FUSE 0x00000800 /* fuse subregion is programmed */ - -/* Fields in otpprog in rev >= 21 */ -#define OTPP_COL_MASK 0x000000ff -#define OTPP_COL_SHIFT 0 -#define OTPP_ROW_MASK 0x0000ff00 -#define OTPP_ROW_SHIFT 8 -#define OTPP_OC_MASK 0x0f000000 -#define OTPP_OC_SHIFT 24 -#define OTPP_READERR 0x10000000 -#define OTPP_VALUE_MASK 0x20000000 -#define OTPP_VALUE_SHIFT 29 -#define OTPP_START_BUSY 0x80000000 -#define OTPP_READ 0x40000000 - -/* Opcodes for OTPP_OC field */ -#define OTPPOC_READ 0 -#define OTPPOC_BIT_PROG 1 -#define OTPPOC_VERIFY 3 -#define OTPPOC_INIT 4 -#define OTPPOC_SET 5 -#define OTPPOC_RESET 6 -#define OTPPOC_OCST 7 -#define OTPPOC_ROW_LOCK 8 -#define OTPPOC_PRESCN_TEST 9 - -#define OTPTYPE_IPX(ccrev) ((ccrev) == 21 || (ccrev) >= 23) - -#define OTPP_TRIES 10000000 /* # of tries for OTPP */ - -#define MAXNUMRDES 9 /* Maximum OTP redundancy entries */ - -/* OTP common function type */ -typedef int (*otp_status_t) (void *oh); -typedef int (*otp_size_t) (void *oh); -typedef void *(*otp_init_t) (struct si_pub *sih); -typedef u16(*otp_read_bit_t) (void *oh, chipcregs_t *cc, uint off); -typedef int (*otp_read_region_t) (struct si_pub *sih, int region, u16 *data, - uint *wlen); -typedef int (*otp_nvread_t) (void *oh, char *data, uint *len); - -/* OTP function struct */ -struct otp_fn_s { - otp_size_t size; - otp_read_bit_t read_bit; - otp_init_t init; - otp_read_region_t read_region; - otp_nvread_t nvread; - otp_status_t status; -}; - -struct otpinfo { - uint ccrev; /* chipc revision */ - struct otp_fn_s *fn; /* OTP functions */ - struct si_pub *sih; /* Saved sb handle */ - - /* IPX OTP section */ - u16 wsize; /* Size of otp in words */ - u16 rows; /* Geometry */ - u16 cols; /* Geometry */ - u32 status; /* Flag bits (lock/prog/rv). - * (Reflected only when OTP is power cycled) - */ - u16 hwbase; /* hardware subregion offset */ - u16 hwlim; /* hardware subregion boundary */ - u16 swbase; /* software subregion offset */ - u16 swlim; /* software subregion boundary */ - u16 fbase; /* fuse subregion offset */ - u16 flim; /* fuse subregion boundary */ - int otpgu_base; /* offset to General Use Region */ -}; - -static struct otpinfo otpinfo; - -/* - * IPX OTP Code - * - * Exported functions: - * ipxotp_status() - * ipxotp_size() - * ipxotp_init() - * ipxotp_read_bit() - * ipxotp_read_region() - * ipxotp_nvread() - * - */ - -#define HWSW_RGN(rgn) (((rgn) == OTP_HW_RGN) ? "h/w" : "s/w") - -/* OTP layout */ -/* CC revs 21, 24 and 27 OTP General Use Region word offset */ -#define REVA4_OTPGU_BASE 12 - -/* CC revs 23, 25, 26, 28 and above OTP General Use Region word offset */ -#define REVB8_OTPGU_BASE 20 - -/* CC rev 36 OTP General Use Region word offset */ -#define REV36_OTPGU_BASE 12 - -/* Subregion word offsets in General Use region */ -#define OTPGU_HSB_OFF 0 -#define OTPGU_SFB_OFF 1 -#define OTPGU_CI_OFF 2 -#define OTPGU_P_OFF 3 -#define OTPGU_SROM_OFF 4 - -/* Flag bit offsets in General Use region */ -#define OTPGU_HWP_OFF 60 -#define OTPGU_SWP_OFF 61 -#define OTPGU_CIP_OFF 62 -#define OTPGU_FUSEP_OFF 63 -#define OTPGU_CIP_MSK 0x4000 -#define OTPGU_P_MSK 0xf000 -#define OTPGU_P_SHIFT (OTPGU_HWP_OFF % 16) - -/* OTP Size */ -#define OTP_SZ_FU_324 ((roundup(324, 8))/8) /* 324 bits */ -#define OTP_SZ_FU_288 (288/8) /* 288 bits */ -#define OTP_SZ_FU_216 (216/8) /* 216 bits */ -#define OTP_SZ_FU_72 (72/8) /* 72 bits */ -#define OTP_SZ_CHECKSUM (16/8) /* 16 bits */ -#define OTP4315_SWREG_SZ 178 /* 178 bytes */ -#define OTP_SZ_FU_144 (144/8) /* 144 bits */ - -static int ipxotp_status(void *oh) -{ - struct otpinfo *oi = (struct otpinfo *) oh; - return (int)(oi->status); -} - -/* Return size in bytes */ -static int ipxotp_size(void *oh) -{ - struct otpinfo *oi = (struct otpinfo *) oh; - return (int)oi->wsize * 2; -} - -static u16 ipxotp_otpr(void *oh, chipcregs_t *cc, uint wn) -{ - struct otpinfo *oi; - - oi = (struct otpinfo *) oh; - - return R_REG(&cc->sromotp[wn]); -} - -static u16 ipxotp_read_bit(void *oh, chipcregs_t *cc, uint off) -{ - struct otpinfo *oi = (struct otpinfo *) oh; - uint k, row, col; - u32 otpp, st; - - row = off / oi->cols; - col = off % oi->cols; - - otpp = OTPP_START_BUSY | - ((OTPPOC_READ << OTPP_OC_SHIFT) & OTPP_OC_MASK) | - ((row << OTPP_ROW_SHIFT) & OTPP_ROW_MASK) | - ((col << OTPP_COL_SHIFT) & OTPP_COL_MASK); - W_REG(&cc->otpprog, otpp); - - for (k = 0; - ((st = R_REG(&cc->otpprog)) & OTPP_START_BUSY) - && (k < OTPP_TRIES); k++) - ; - if (k >= OTPP_TRIES) { - return 0xffff; - } - if (st & OTPP_READERR) { - return 0xffff; - } - st = (st & OTPP_VALUE_MASK) >> OTPP_VALUE_SHIFT; - - return (int)st; -} - -/* Calculate max HW/SW region byte size by subtracting fuse region and checksum size, - * osizew is oi->wsize (OTP size - GU size) in words - */ -static int ipxotp_max_rgnsz(struct si_pub *sih, int osizew) -{ - int ret = 0; - - switch (sih->chip) { - case BCM43224_CHIP_ID: - case BCM43225_CHIP_ID: - ret = osizew * 2 - OTP_SZ_FU_72 - OTP_SZ_CHECKSUM; - break; - case BCM4313_CHIP_ID: - ret = osizew * 2 - OTP_SZ_FU_72 - OTP_SZ_CHECKSUM; - break; - default: - break; /* Don't know about this chip */ - } - - return ret; -} - -static void _ipxotp_init(struct otpinfo *oi, chipcregs_t *cc) -{ - uint k; - u32 otpp, st; - - /* record word offset of General Use Region for various chipcommon revs */ - if (oi->sih->ccrev == 21 || oi->sih->ccrev == 24 - || oi->sih->ccrev == 27) { - oi->otpgu_base = REVA4_OTPGU_BASE; - } else if (oi->sih->ccrev == 36) { - /* OTP size greater than equal to 2KB (128 words), otpgu_base is similar to rev23 */ - if (oi->wsize >= 128) - oi->otpgu_base = REVB8_OTPGU_BASE; - else - oi->otpgu_base = REV36_OTPGU_BASE; - } else if (oi->sih->ccrev == 23 || oi->sih->ccrev >= 25) { - oi->otpgu_base = REVB8_OTPGU_BASE; - } - - /* First issue an init command so the status is up to date */ - otpp = - OTPP_START_BUSY | ((OTPPOC_INIT << OTPP_OC_SHIFT) & OTPP_OC_MASK); - - W_REG(&cc->otpprog, otpp); - for (k = 0; - ((st = R_REG(&cc->otpprog)) & OTPP_START_BUSY) - && (k < OTPP_TRIES); k++) - ; - if (k >= OTPP_TRIES) { - return; - } - - /* Read OTP lock bits and subregion programmed indication bits */ - oi->status = R_REG(&cc->otpstatus); - - if ((oi->sih->chip == BCM43224_CHIP_ID) - || (oi->sih->chip == BCM43225_CHIP_ID)) { - u32 p_bits; - p_bits = - (ipxotp_otpr(oi, cc, oi->otpgu_base + OTPGU_P_OFF) & - OTPGU_P_MSK) - >> OTPGU_P_SHIFT; - oi->status |= (p_bits << OTPS_GUP_SHIFT); - } - - /* - * h/w region base and fuse region limit are fixed to the top and - * the bottom of the general use region. Everything else can be flexible. - */ - oi->hwbase = oi->otpgu_base + OTPGU_SROM_OFF; - oi->hwlim = oi->wsize; - if (oi->status & OTPS_GUP_HW) { - oi->hwlim = - ipxotp_otpr(oi, cc, oi->otpgu_base + OTPGU_HSB_OFF) / 16; - oi->swbase = oi->hwlim; - } else - oi->swbase = oi->hwbase; - - /* subtract fuse and checksum from beginning */ - oi->swlim = ipxotp_max_rgnsz(oi->sih, oi->wsize) / 2; - - if (oi->status & OTPS_GUP_SW) { - oi->swlim = - ipxotp_otpr(oi, cc, oi->otpgu_base + OTPGU_SFB_OFF) / 16; - oi->fbase = oi->swlim; - } else - oi->fbase = oi->swbase; - - oi->flim = oi->wsize; -} - -static void *ipxotp_init(struct si_pub *sih) -{ - uint idx; - chipcregs_t *cc; - struct otpinfo *oi; - - /* Make sure we're running IPX OTP */ - if (!OTPTYPE_IPX(sih->ccrev)) - return NULL; - - /* Make sure OTP is not disabled */ - if (ai_is_otp_disabled(sih)) - return NULL; - - /* OTP is always powered */ - oi = &otpinfo; - - /* Check for otp size */ - switch ((sih->cccaps & CC_CAP_OTPSIZE) >> CC_CAP_OTPSIZE_SHIFT) { - case 0: - /* Nothing there */ - return NULL; - case 1: /* 32x64 */ - oi->rows = 32; - oi->cols = 64; - oi->wsize = 128; - break; - case 2: /* 64x64 */ - oi->rows = 64; - oi->cols = 64; - oi->wsize = 256; - break; - case 5: /* 96x64 */ - oi->rows = 96; - oi->cols = 64; - oi->wsize = 384; - break; - case 7: /* 16x64 *//* 1024 bits */ - oi->rows = 16; - oi->cols = 64; - oi->wsize = 64; - break; - default: - /* Don't know the geometry */ - return NULL; - } - - /* Retrieve OTP region info */ - idx = ai_coreidx(sih); - cc = ai_setcoreidx(sih, SI_CC_IDX); - - _ipxotp_init(oi, cc); - - ai_setcoreidx(sih, idx); - - return (void *)oi; -} - -static int ipxotp_read_region(void *oh, int region, u16 *data, uint *wlen) -{ - struct otpinfo *oi = (struct otpinfo *) oh; - uint idx; - chipcregs_t *cc; - uint base, i, sz; - - /* Validate region selection */ - switch (region) { - case OTP_HW_RGN: - sz = (uint) oi->hwlim - oi->hwbase; - if (!(oi->status & OTPS_GUP_HW)) { - *wlen = sz; - return -ENODATA; - } - if (*wlen < sz) { - *wlen = sz; - return -EOVERFLOW; - } - base = oi->hwbase; - break; - case OTP_SW_RGN: - sz = ((uint) oi->swlim - oi->swbase); - if (!(oi->status & OTPS_GUP_SW)) { - *wlen = sz; - return -ENODATA; - } - if (*wlen < sz) { - *wlen = sz; - return -EOVERFLOW; - } - base = oi->swbase; - break; - case OTP_CI_RGN: - sz = OTPGU_CI_SZ; - if (!(oi->status & OTPS_GUP_CI)) { - *wlen = sz; - return -ENODATA; - } - if (*wlen < sz) { - *wlen = sz; - return -EOVERFLOW; - } - base = oi->otpgu_base + OTPGU_CI_OFF; - break; - case OTP_FUSE_RGN: - sz = (uint) oi->flim - oi->fbase; - if (!(oi->status & OTPS_GUP_FUSE)) { - *wlen = sz; - return -ENODATA; - } - if (*wlen < sz) { - *wlen = sz; - return -EOVERFLOW; - } - base = oi->fbase; - break; - case OTP_ALL_RGN: - sz = ((uint) oi->flim - oi->hwbase); - if (!(oi->status & (OTPS_GUP_HW | OTPS_GUP_SW))) { - *wlen = sz; - return -ENODATA; - } - if (*wlen < sz) { - *wlen = sz; - return -EOVERFLOW; - } - base = oi->hwbase; - break; - default: - return -EINVAL; - } - - idx = ai_coreidx(oi->sih); - cc = ai_setcoreidx(oi->sih, SI_CC_IDX); - - /* Read the data */ - for (i = 0; i < sz; i++) - data[i] = ipxotp_otpr(oh, cc, base + i); - - ai_setcoreidx(oi->sih, idx); - *wlen = sz; - return 0; -} - -static int ipxotp_nvread(void *oh, char *data, uint *len) -{ - return -ENOTSUPP; -} - -static struct otp_fn_s ipxotp_fn = { - (otp_size_t) ipxotp_size, - (otp_read_bit_t) ipxotp_read_bit, - - (otp_init_t) ipxotp_init, - (otp_read_region_t) ipxotp_read_region, - (otp_nvread_t) ipxotp_nvread, - - (otp_status_t) ipxotp_status -}; - -/* - * otp_status() - * otp_size() - * otp_read_bit() - * otp_init() - * otp_read_region() - * otp_nvread() - */ - -int otp_status(void *oh) -{ - struct otpinfo *oi = (struct otpinfo *) oh; - - return oi->fn->status(oh); -} - -int otp_size(void *oh) -{ - struct otpinfo *oi = (struct otpinfo *) oh; - - return oi->fn->size(oh); -} - -u16 otp_read_bit(void *oh, uint offset) -{ - struct otpinfo *oi = (struct otpinfo *) oh; - uint idx = ai_coreidx(oi->sih); - chipcregs_t *cc = ai_setcoreidx(oi->sih, SI_CC_IDX); - u16 readBit = (u16) oi->fn->read_bit(oh, cc, offset); - ai_setcoreidx(oi->sih, idx); - return readBit; -} - -void *otp_init(struct si_pub *sih) -{ - struct otpinfo *oi; - void *ret = NULL; - - oi = &otpinfo; - memset(oi, 0, sizeof(struct otpinfo)); - - oi->ccrev = sih->ccrev; - - if (OTPTYPE_IPX(oi->ccrev)) - oi->fn = &ipxotp_fn; - - if (oi->fn == NULL) { - return NULL; - } - - oi->sih = sih; - - ret = (oi->fn->init) (sih); - - return ret; -} - -int -otp_read_region(struct si_pub *sih, int region, u16 *data, - uint *wlen) { - void *oh; - int err = 0; - - if (ai_is_otp_disabled(sih)) { - err = -EPERM; - goto out; - } - - oh = otp_init(sih); - if (oh == NULL) { - err = -EBADE; - goto out; - } - - err = (((struct otpinfo *) oh)->fn->read_region) - (oh, region, data, wlen); - - out: - return err; -} - -int otp_nvread(void *oh, char *data, uint *len) -{ - struct otpinfo *oi = (struct otpinfo *) oh; - - return oi->fn->nvread(oh, data, len); -} |