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/*
* Broadcom specific AMBA
* SPROM reading
*
* Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de>
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
#include "bcma_private.h"
#include <linux/bcma/bcma.h>
#include <linux/bcma/bcma_regs.h>
#include <linux/pci.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
static int(*get_fallback_sprom)(struct bcma_bus *dev, struct ssb_sprom *out);
/**
* bcma_arch_register_fallback_sprom - Registers a method providing a
* fallback SPROM if no SPROM is found.
*
* @sprom_callback: The callback function.
*
* With this function the architecture implementation may register a
* callback handler which fills the SPROM data structure. The fallback is
* used for PCI based BCMA devices, where no valid SPROM can be found
* in the shadow registers and to provide the SPROM for SoCs where BCMA is
* to controll the system bus.
*
* This function is useful for weird architectures that have a half-assed
* BCMA device hardwired to their PCI bus.
*
* This function is available for architecture code, only. So it is not
* exported.
*/
int bcma_arch_register_fallback_sprom(int (*sprom_callback)(struct bcma_bus *bus,
struct ssb_sprom *out))
{
if (get_fallback_sprom)
return -EEXIST;
get_fallback_sprom = sprom_callback;
return 0;
}
static int bcma_fill_sprom_with_fallback(struct bcma_bus *bus,
struct ssb_sprom *out)
{
int err;
if (!get_fallback_sprom) {
err = -ENOENT;
goto fail;
}
err = get_fallback_sprom(bus, out);
if (err)
goto fail;
bcma_debug(bus, "Using SPROM revision %d provided by platform.\n",
bus->sprom.revision);
return 0;
fail:
bcma_warn(bus, "Using fallback SPROM failed (err %d)\n", err);
return err;
}
/**************************************************
* R/W ops.
**************************************************/
static void bcma_sprom_read(struct bcma_bus *bus, u16 offset, u16 *sprom,
size_t words)
{
int i;
for (i = 0; i < words; i++)
sprom[i] = bcma_read16(bus->drv_cc.core, offset + (i * 2));
}
/**************************************************
* Validation.
**************************************************/
static inline u8 bcma_crc8(u8 crc, u8 data)
{
/* Polynomial: x^8 + x^7 + x^6 + x^4 + x^2 + 1 */
static const u8 t[] = {
0x00, 0xF7, 0xB9, 0x4E, 0x25, 0xD2, 0x9C, 0x6B,
0x4A, 0xBD, 0xF3, 0x04, 0x6F, 0x98, 0xD6, 0x21,
0x94, 0x63, 0x2D, 0xDA, 0xB1, 0x46, 0x08, 0xFF,
0xDE, 0x29, 0x67, 0x90, 0xFB, 0x0C, 0x42, 0xB5,
0x7F, 0x88, 0xC6, 0x31, 0x5A, 0xAD, 0xE3, 0x14,
0x35, 0xC2, 0x8C, 0x7B, 0x10, 0xE7, 0xA9, 0x5E,
0xEB, 0x1C, 0x52, 0xA5, 0xCE, 0x39, 0x77, 0x80,
0xA1, 0x56, 0x18, 0xEF, 0x84, 0x73, 0x3D, 0xCA,
0xFE, 0x09, 0x47, 0xB0, 0xDB, 0x2C, 0x62, 0x95,
0xB4, 0x43, 0x0D, 0xFA, 0x91, 0x66, 0x28, 0xDF,
0x6A, 0x9D, 0xD3, 0x24, 0x4F, 0xB8, 0xF6, 0x01,
0x20, 0xD7, 0x99, 0x6E, 0x05, 0xF2, 0xBC, 0x4B,
0x81, 0x76, 0x38, 0xCF, 0xA4, 0x53, 0x1D, 0xEA,
0xCB, 0x3C, 0x72, 0x85, 0xEE, 0x19, 0x57, 0xA0,
0x15, 0xE2, 0xAC, 0x5B, 0x30, 0xC7, 0x89, 0x7E,
0x5F, 0xA8, 0xE6, 0x11, 0x7A, 0x8D, 0xC3, 0x34,
0xAB, 0x5C, 0x12, 0xE5, 0x8E, 0x79, 0x37, 0xC0,
0xE1, 0x16, 0x58, 0xAF, 0xC4, 0x33, 0x7D, 0x8A,
0x3F, 0xC8, 0x86, 0x71, 0x1A, 0xED, 0xA3, 0x54,
0x75, 0x82, 0xCC, 0x3B, 0x50, 0xA7, 0xE9, 0x1E,
0xD4, 0x23, 0x6D, 0x9A, 0xF1, 0x06, 0x48, 0xBF,
0x9E, 0x69, 0x27, 0xD0, 0xBB, 0x4C, 0x02, 0xF5,
0x40, 0xB7, 0xF9, 0x0E, 0x65, 0x92, 0xDC, 0x2B,
0x0A, 0xFD, 0xB3, 0x44, 0x2F, 0xD8, 0x96, 0x61,
0x55, 0xA2, 0xEC, 0x1B, 0x70, 0x87, 0xC9, 0x3E,
0x1F, 0xE8, 0xA6, 0x51, 0x3A, 0xCD, 0x83, 0x74,
0xC1, 0x36, 0x78, 0x8F, 0xE4, 0x13, 0x5D, 0xAA,
0x8B, 0x7C, 0x32, 0xC5, 0xAE, 0x59, 0x17, 0xE0,
0x2A, 0xDD, 0x93, 0x64, 0x0F, 0xF8, 0xB6, 0x41,
0x60, 0x97, 0xD9, 0x2E, 0x45, 0xB2, 0xFC, 0x0B,
0xBE, 0x49, 0x07, 0xF0, 0x9B, 0x6C, 0x22, 0xD5,
0xF4, 0x03, 0x4D, 0xBA, 0xD1, 0x26, 0x68, 0x9F,
};
return t[crc ^ data];
}
static u8 bcma_sprom_crc(const u16 *sprom, size_t words)
{
int word;
u8 crc = 0xFF;
for (word = 0; word < words - 1; word++) {
crc = bcma_crc8(crc, sprom[word] & 0x00FF);
crc = bcma_crc8(crc, (sprom[word] & 0xFF00) >> 8);
}
crc = bcma_crc8(crc, sprom[words - 1] & 0x00FF);
crc ^= 0xFF;
return crc;
}
static int bcma_sprom_check_crc(const u16 *sprom, size_t words)
{
u8 crc;
u8 expected_crc;
u16 tmp;
crc = bcma_sprom_crc(sprom, words);
tmp = sprom[words - 1] & SSB_SPROM_REVISION_CRC;
expected_crc = tmp >> SSB_SPROM_REVISION_CRC_SHIFT;
if (crc != expected_crc)
return -EPROTO;
return 0;
}
static int bcma_sprom_valid(struct bcma_bus *bus, const u16 *sprom,
size_t words)
{
u16 revision;
int err;
err = bcma_sprom_check_crc(sprom, words);
if (err)
return err;
revision = sprom[words - 1] & SSB_SPROM_REVISION_REV;
if (revision != 8 && revision != 9 && revision != 10) {
pr_err("Unsupported SPROM revision: %d\n", revision);
return -ENOENT;
}
bus->sprom.revision = revision;
bcma_debug(bus, "Found SPROM revision %d\n", revision);
return 0;
}
/**************************************************
* SPROM extraction.
**************************************************/
#define SPOFF(offset) ((offset) / sizeof(u16))
#define SPEX(_field, _offset, _mask, _shift) \
bus->sprom._field = ((sprom[SPOFF(_offset)] & (_mask)) >> (_shift))
#define SPEX32(_field, _offset, _mask, _shift) \
bus->sprom._field = ((((u32)sprom[SPOFF((_offset)+2)] << 16 | \
sprom[SPOFF(_offset)]) & (_mask)) >> (_shift))
#define SPEX_ARRAY8(_field, _offset, _mask, _shift) \
do { \
SPEX(_field[0], _offset + 0, _mask, _shift); \
SPEX(_field[1], _offset + 2, _mask, _shift); \
SPEX(_field[2], _offset + 4, _mask, _shift); \
SPEX(_field[3], _offset + 6, _mask, _shift); \
SPEX(_field[4], _offset + 8, _mask, _shift); \
SPEX(_field[5], _offset + 10, _mask, _shift); \
SPEX(_field[6], _offset + 12, _mask, _shift); \
SPEX(_field[7], _offset + 14, _mask, _shift); \
} while (0)
static s8 sprom_extract_antgain(const u16 *in, u16 offset, u16 mask, u16 shift)
{
u16 v;
u8 gain;
v = in[SPOFF(offset)];
gain = (v & mask) >> shift;
if (gain == 0xFF) {
gain = 8; /* If unset use 2dBm */
} else {
/* Q5.2 Fractional part is stored in 0xC0 */
gain = ((gain & 0xC0) >> 6) | ((gain & 0x3F) << 2);
}
return (s8)gain;
}
static void bcma_sprom_extract_r8(struct bcma_bus *bus, const u16 *sprom)
{
u16 v, o;
int i;
u16 pwr_info_offset[] = {
SSB_SROM8_PWR_INFO_CORE0, SSB_SROM8_PWR_INFO_CORE1,
SSB_SROM8_PWR_INFO_CORE2, SSB_SROM8_PWR_INFO_CORE3
};
BUILD_BUG_ON(ARRAY_SIZE(pwr_info_offset) !=
ARRAY_SIZE(bus->sprom.core_pwr_info));
for (i = 0; i < 3; i++) {
v = sprom[SPOFF(SSB_SPROM8_IL0MAC) + i];
*(((__be16 *)bus->sprom.il0mac) + i) = cpu_to_be16(v);
}
SPEX(board_rev, SSB_SPROM8_BOARDREV, ~0, 0);
SPEX(board_type, SSB_SPROM1_SPID, ~0, 0);
SPEX(txpid2g[0], SSB_SPROM4_TXPID2G01, SSB_SPROM4_TXPID2G0,
SSB_SPROM4_TXPID2G0_SHIFT);
SPEX(txpid2g[1], SSB_SPROM4_TXPID2G01, SSB_SPROM4_TXPID2G1,
SSB_SPROM4_TXPID2G1_SHIFT);
SPEX(txpid2g[2], SSB_SPROM4_TXPID2G23, SSB_SPROM4_TXPID2G2,
SSB_SPROM4_TXPID2G2_SHIFT);
SPEX(txpid2g[3], SSB_SPROM4_TXPID2G23, SSB_SPROM4_TXPID2G3,
SSB_SPROM4_TXPID2G3_SHIFT);
SPEX(txpid5gl[0], SSB_SPROM4_TXPID5GL01, SSB_SPROM4_TXPID5GL0,
SSB_SPROM4_TXPID5GL0_SHIFT);
SPEX(txpid5gl[1], SSB_SPROM4_TXPID5GL01, SSB_SPROM4_TXPID5GL1,
SSB_SPROM4_TXPID5GL1_SHIFT);
SPEX(txpid5gl[2], SSB_SPROM4_TXPID5GL23, SSB_SPROM4_TXPID5GL2,
SSB_SPROM4_TXPID5GL2_SHIFT);
SPEX(txpid5gl[3], SSB_SPROM4_TXPID5GL23, SSB_SPROM4_TXPID5GL3,
SSB_SPROM4_TXPID5GL3_SHIFT);
SPEX(txpid5g[0], SSB_SPROM4_TXPID5G01, SSB_SPROM4_TXPID5G0,
SSB_SPROM4_TXPID5G0_SHIFT);
SPEX(txpid5g[1], SSB_SPROM4_TXPID5G01, SSB_SPROM4_TXPID5G1,
SSB_SPROM4_TXPID5G1_SHIFT);
SPEX(txpid5g[2], SSB_SPROM4_TXPID5G23, SSB_SPROM4_TXPID5G2,
SSB_SPROM4_TXPID5G2_SHIFT);
SPEX(txpid5g[3], SSB_SPROM4_TXPID5G23, SSB_SPROM4_TXPID5G3,
SSB_SPROM4_TXPID5G3_SHIFT);
SPEX(txpid5gh[0], SSB_SPROM4_TXPID5GH01, SSB_SPROM4_TXPID5GH0,
SSB_SPROM4_TXPID5GH0_SHIFT);
SPEX(txpid5gh[1], SSB_SPROM4_TXPID5GH01, SSB_SPROM4_TXPID5GH1,
SSB_SPROM4_TXPID5GH1_SHIFT);
SPEX(txpid5gh[2], SSB_SPROM4_TXPID5GH23, SSB_SPROM4_TXPID5GH2,
SSB_SPROM4_TXPID5GH2_SHIFT);
SPEX(txpid5gh[3], SSB_SPROM4_TXPID5GH23, SSB_SPROM4_TXPID5GH3,
SSB_SPROM4_TXPID5GH3_SHIFT);
SPEX(boardflags_lo, SSB_SPROM8_BFLLO, ~0, 0);
SPEX(boardflags_hi, SSB_SPROM8_BFLHI, ~0, 0);
SPEX(boardflags2_lo, SSB_SPROM8_BFL2LO, ~0, 0);
SPEX(boardflags2_hi, SSB_SPROM8_BFL2HI, ~0, 0);
SPEX(alpha2[0], SSB_SPROM8_CCODE, 0xff00, 8);
SPEX(alpha2[1], SSB_SPROM8_CCODE, 0x00ff, 0);
/* Extract cores power info info */
for (i = 0; i < ARRAY_SIZE(pwr_info_offset); i++) {
o = pwr_info_offset[i];
SPEX(core_pwr_info[i].itssi_2g, o + SSB_SROM8_2G_MAXP_ITSSI,
SSB_SPROM8_2G_ITSSI, SSB_SPROM8_2G_ITSSI_SHIFT);
SPEX(core_pwr_info[i].maxpwr_2g, o + SSB_SROM8_2G_MAXP_ITSSI,
SSB_SPROM8_2G_MAXP, 0);
SPEX(core_pwr_info[i].pa_2g[0], o + SSB_SROM8_2G_PA_0, ~0, 0);
SPEX(core_pwr_info[i].pa_2g[1], o + SSB_SROM8_2G_PA_1, ~0, 0);
SPEX(core_pwr_info[i].pa_2g[2], o + SSB_SROM8_2G_PA_2, ~0, 0);
SPEX(core_pwr_info[i].itssi_5g, o + SSB_SROM8_5G_MAXP_ITSSI,
SSB_SPROM8_5G_ITSSI, SSB_SPROM8_5G_ITSSI_SHIFT);
SPEX(core_pwr_info[i].maxpwr_5g, o + SSB_SROM8_5G_MAXP_ITSSI,
SSB_SPROM8_5G_MAXP, 0);
SPEX(core_pwr_info[i].maxpwr_5gh, o + SSB_SPROM8_5GHL_MAXP,
SSB_SPROM8_5GH_MAXP, 0);
SPEX(core_pwr_info[i].maxpwr_5gl, o + SSB_SPROM8_5GHL_MAXP,
SSB_SPROM8_5GL_MAXP, SSB_SPROM8_5GL_MAXP_SHIFT);
SPEX(core_pwr_info[i].pa_5gl[0], o + SSB_SROM8_5GL_PA_0, ~0, 0);
SPEX(core_pwr_info[i].pa_5gl[1], o + SSB_SROM8_5GL_PA_1, ~0, 0);
SPEX(core_pwr_info[i].pa_5gl[2], o + SSB_SROM8_5GL_PA_2, ~0, 0);
SPEX(core_pwr_info[i].pa_5g[0], o + SSB_SROM8_5G_PA_0, ~0, 0);
SPEX(core_pwr_info[i].pa_5g[1], o + SSB_SROM8_5G_PA_1, ~0, 0);
SPEX(core_pwr_info[i].pa_5g[2], o + SSB_SROM8_5G_PA_2, ~0, 0);
SPEX(core_pwr_info[i].pa_5gh[0], o + SSB_SROM8_5GH_PA_0, ~0, 0);
SPEX(core_pwr_info[i].pa_5gh[1], o + SSB_SROM8_5GH_PA_1, ~0, 0);
SPEX(core_pwr_info[i].pa_5gh[2], o + SSB_SROM8_5GH_PA_2, ~0, 0);
}
SPEX(fem.ghz2.tssipos, SSB_SPROM8_FEM2G, SSB_SROM8_FEM_TSSIPOS,
SSB_SROM8_FEM_TSSIPOS_SHIFT);
SPEX(fem.ghz2.extpa_gain, SSB_SPROM8_FEM2G, SSB_SROM8_FEM_EXTPA_GAIN,
SSB_SROM8_FEM_EXTPA_GAIN_SHIFT);
SPEX(fem.ghz2.pdet_range, SSB_SPROM8_FEM2G, SSB_SROM8_FEM_PDET_RANGE,
SSB_SROM8_FEM_PDET_RANGE_SHIFT);
SPEX(fem.ghz2.tr_iso, SSB_SPROM8_FEM2G, SSB_SROM8_FEM_TR_ISO,
SSB_SROM8_FEM_TR_ISO_SHIFT);
SPEX(fem.ghz2.antswlut, SSB_SPROM8_FEM2G, SSB_SROM8_FEM_ANTSWLUT,
SSB_SROM8_FEM_ANTSWLUT_SHIFT);
SPEX(fem.ghz5.tssipos, SSB_SPROM8_FEM5G, SSB_SROM8_FEM_TSSIPOS,
SSB_SROM8_FEM_TSSIPOS_SHIFT);
SPEX(fem.ghz5.extpa_gain, SSB_SPROM8_FEM5G, SSB_SROM8_FEM_EXTPA_GAIN,
SSB_SROM8_FEM_EXTPA_GAIN_SHIFT);
SPEX(fem.ghz5.pdet_range, SSB_SPROM8_FEM5G, SSB_SROM8_FEM_PDET_RANGE,
SSB_SROM8_FEM_PDET_RANGE_SHIFT);
SPEX(fem.ghz5.tr_iso, SSB_SPROM8_FEM5G, SSB_SROM8_FEM_TR_ISO,
SSB_SROM8_FEM_TR_ISO_SHIFT);
SPEX(fem.ghz5.antswlut, SSB_SPROM8_FEM5G, SSB_SROM8_FEM_ANTSWLUT,
SSB_SROM8_FEM_ANTSWLUT_SHIFT);
SPEX(ant_available_a, SSB_SPROM8_ANTAVAIL, SSB_SPROM8_ANTAVAIL_A,
SSB_SPROM8_ANTAVAIL_A_SHIFT);
SPEX(ant_available_bg, SSB_SPROM8_ANTAVAIL, SSB_SPROM8_ANTAVAIL_BG,
SSB_SPROM8_ANTAVAIL_BG_SHIFT);
SPEX(maxpwr_bg, SSB_SPROM8_MAXP_BG, SSB_SPROM8_MAXP_BG_MASK, 0);
SPEX(itssi_bg, SSB_SPROM8_MAXP_BG, SSB_SPROM8_ITSSI_BG,
SSB_SPROM8_ITSSI_BG_SHIFT);
SPEX(maxpwr_a, SSB_SPROM8_MAXP_A, SSB_SPROM8_MAXP_A_MASK, 0);
SPEX(itssi_a, SSB_SPROM8_MAXP_A, SSB_SPROM8_ITSSI_A,
SSB_SPROM8_ITSSI_A_SHIFT);
SPEX(maxpwr_ah, SSB_SPROM8_MAXP_AHL, SSB_SPROM8_MAXP_AH_MASK, 0);
SPEX(maxpwr_al, SSB_SPROM8_MAXP_AHL, SSB_SPROM8_MAXP_AL_MASK,
SSB_SPROM8_MAXP_AL_SHIFT);
SPEX(gpio0, SSB_SPROM8_GPIOA, SSB_SPROM8_GPIOA_P0, 0);
SPEX(gpio1, SSB_SPROM8_GPIOA, SSB_SPROM8_GPIOA_P1,
SSB_SPROM8_GPIOA_P1_SHIFT);
SPEX(gpio2, SSB_SPROM8_GPIOB, SSB_SPROM8_GPIOB_P2, 0);
SPEX(gpio3, SSB_SPROM8_GPIOB, SSB_SPROM8_GPIOB_P3,
SSB_SPROM8_GPIOB_P3_SHIFT);
SPEX(tri2g, SSB_SPROM8_TRI25G, SSB_SPROM8_TRI2G, 0);
SPEX(tri5g, SSB_SPROM8_TRI25G, SSB_SPROM8_TRI5G,
SSB_SPROM8_TRI5G_SHIFT);
SPEX(tri5gl, SSB_SPROM8_TRI5GHL, SSB_SPROM8_TRI5GL, 0);
SPEX(tri5gh, SSB_SPROM8_TRI5GHL, SSB_SPROM8_TRI5GH,
SSB_SPROM8_TRI5GH_SHIFT);
SPEX(rxpo2g, SSB_SPROM8_RXPO, SSB_SPROM8_RXPO2G,
SSB_SPROM8_RXPO2G_SHIFT);
SPEX(rxpo5g, SSB_SPROM8_RXPO, SSB_SPROM8_RXPO5G,
SSB_SPROM8_RXPO5G_SHIFT);
SPEX(rssismf2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_RSSISMF2G, 0);
SPEX(rssismc2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_RSSISMC2G,
SSB_SPROM8_RSSISMC2G_SHIFT);
SPEX(rssisav2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_RSSISAV2G,
SSB_SPROM8_RSSISAV2G_SHIFT);
SPEX(bxa2g, SSB_SPROM8_RSSIPARM2G, SSB_SPROM8_BXA2G,
SSB_SPROM8_BXA2G_SHIFT);
SPEX(rssismf5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_RSSISMF5G, 0);
SPEX(rssismc5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_RSSISMC5G,
SSB_SPROM8_RSSISMC5G_SHIFT);
SPEX(rssisav5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_RSSISAV5G,
SSB_SPROM8_RSSISAV5G_SHIFT);
SPEX(bxa5g, SSB_SPROM8_RSSIPARM5G, SSB_SPROM8_BXA5G,
SSB_SPROM8_BXA5G_SHIFT);
SPEX(pa0b0, SSB_SPROM8_PA0B0, ~0, 0);
SPEX(pa0b1, SSB_SPROM8_PA0B1, ~0, 0);
SPEX(pa0b2, SSB_SPROM8_PA0B2, ~0, 0);
SPEX(pa1b0, SSB_SPROM8_PA1B0, ~0, 0);
SPEX(pa1b1, SSB_SPROM8_PA1B1, ~0, 0);
SPEX(pa1b2, SSB_SPROM8_PA1B2, ~0, 0);
SPEX(pa1lob0, SSB_SPROM8_PA1LOB0, ~0, 0);
SPEX(pa1lob1, SSB_SPROM8_PA1LOB1, ~0, 0);
SPEX(pa1lob2, SSB_SPROM8_PA1LOB2, ~0, 0);
SPEX(pa1hib0, SSB_SPROM8_PA1HIB0, ~0, 0);
SPEX(pa1hib1, SSB_SPROM8_PA1HIB1, ~0, 0);
SPEX(pa1hib2, SSB_SPROM8_PA1HIB2, ~0, 0);
SPEX(cck2gpo, SSB_SPROM8_CCK2GPO, ~0, 0);
SPEX32(ofdm2gpo, SSB_SPROM8_OFDM2GPO, ~0, 0);
SPEX32(ofdm5glpo, SSB_SPROM8_OFDM5GLPO, ~0, 0);
SPEX32(ofdm5gpo, SSB_SPROM8_OFDM5GPO, ~0, 0);
SPEX32(ofdm5ghpo, SSB_SPROM8_OFDM5GHPO, ~0, 0);
/* Extract the antenna gain values. */
bus->sprom.antenna_gain.a0 = sprom_extract_antgain(sprom,
SSB_SPROM8_AGAIN01,
SSB_SPROM8_AGAIN0,
SSB_SPROM8_AGAIN0_SHIFT);
bus->sprom.antenna_gain.a1 = sprom_extract_antgain(sprom,
SSB_SPROM8_AGAIN01,
SSB_SPROM8_AGAIN1,
SSB_SPROM8_AGAIN1_SHIFT);
bus->sprom.antenna_gain.a2 = sprom_extract_antgain(sprom,
SSB_SPROM8_AGAIN23,
SSB_SPROM8_AGAIN2,
SSB_SPROM8_AGAIN2_SHIFT);
bus->sprom.antenna_gain.a3 = sprom_extract_antgain(sprom,
SSB_SPROM8_AGAIN23,
SSB_SPROM8_AGAIN3,
SSB_SPROM8_AGAIN3_SHIFT);
SPEX(leddc_on_time, SSB_SPROM8_LEDDC, SSB_SPROM8_LEDDC_ON,
SSB_SPROM8_LEDDC_ON_SHIFT);
SPEX(leddc_off_time, SSB_SPROM8_LEDDC, SSB_SPROM8_LEDDC_OFF,
SSB_SPROM8_LEDDC_OFF_SHIFT);
SPEX(txchain, SSB_SPROM8_TXRXC, SSB_SPROM8_TXRXC_TXCHAIN,
SSB_SPROM8_TXRXC_TXCHAIN_SHIFT);
SPEX(rxchain, SSB_SPROM8_TXRXC, SSB_SPROM8_TXRXC_RXCHAIN,
SSB_SPROM8_TXRXC_RXCHAIN_SHIFT);
SPEX(antswitch, SSB_SPROM8_TXRXC, SSB_SPROM8_TXRXC_SWITCH,
SSB_SPROM8_TXRXC_SWITCH_SHIFT);
SPEX(opo, SSB_SPROM8_OFDM2GPO, 0x00ff, 0);
SPEX_ARRAY8(mcs2gpo, SSB_SPROM8_2G_MCSPO, ~0, 0);
SPEX_ARRAY8(mcs5gpo, SSB_SPROM8_5G_MCSPO, ~0, 0);
SPEX_ARRAY8(mcs5glpo, SSB_SPROM8_5GL_MCSPO, ~0, 0);
SPEX_ARRAY8(mcs5ghpo, SSB_SPROM8_5GH_MCSPO, ~0, 0);
SPEX(rawtempsense, SSB_SPROM8_RAWTS, SSB_SPROM8_RAWTS_RAWTEMP,
SSB_SPROM8_RAWTS_RAWTEMP_SHIFT);
SPEX(measpower, SSB_SPROM8_RAWTS, SSB_SPROM8_RAWTS_MEASPOWER,
SSB_SPROM8_RAWTS_MEASPOWER_SHIFT);
SPEX(tempsense_slope, SSB_SPROM8_OPT_CORRX,
SSB_SPROM8_OPT_CORRX_TEMP_SLOPE,
SSB_SPROM8_OPT_CORRX_TEMP_SLOPE_SHIFT);
SPEX(tempcorrx, SSB_SPROM8_OPT_CORRX, SSB_SPROM8_OPT_CORRX_TEMPCORRX,
SSB_SPROM8_OPT_CORRX_TEMPCORRX_SHIFT);
SPEX(tempsense_option, SSB_SPROM8_OPT_CORRX,
SSB_SPROM8_OPT_CORRX_TEMP_OPTION,
SSB_SPROM8_OPT_CORRX_TEMP_OPTION_SHIFT);
SPEX(freqoffset_corr, SSB_SPROM8_HWIQ_IQSWP,
SSB_SPROM8_HWIQ_IQSWP_FREQ_CORR,
SSB_SPROM8_HWIQ_IQSWP_FREQ_CORR_SHIFT);
SPEX(iqcal_swp_dis, SSB_SPROM8_HWIQ_IQSWP,
SSB_SPROM8_HWIQ_IQSWP_IQCAL_SWP,
SSB_SPROM8_HWIQ_IQSWP_IQCAL_SWP_SHIFT);
SPEX(hw_iqcal_en, SSB_SPROM8_HWIQ_IQSWP, SSB_SPROM8_HWIQ_IQSWP_HW_IQCAL,
SSB_SPROM8_HWIQ_IQSWP_HW_IQCAL_SHIFT);
SPEX(bw40po, SSB_SPROM8_BW40PO, ~0, 0);
SPEX(cddpo, SSB_SPROM8_CDDPO, ~0, 0);
SPEX(stbcpo, SSB_SPROM8_STBCPO, ~0, 0);
SPEX(bwduppo, SSB_SPROM8_BWDUPPO, ~0, 0);
SPEX(tempthresh, SSB_SPROM8_THERMAL, SSB_SPROM8_THERMAL_TRESH,
SSB_SPROM8_THERMAL_TRESH_SHIFT);
SPEX(tempoffset, SSB_SPROM8_THERMAL, SSB_SPROM8_THERMAL_OFFSET,
SSB_SPROM8_THERMAL_OFFSET_SHIFT);
SPEX(phycal_tempdelta, SSB_SPROM8_TEMPDELTA,
SSB_SPROM8_TEMPDELTA_PHYCAL,
SSB_SPROM8_TEMPDELTA_PHYCAL_SHIFT);
SPEX(temps_period, SSB_SPROM8_TEMPDELTA, SSB_SPROM8_TEMPDELTA_PERIOD,
SSB_SPROM8_TEMPDELTA_PERIOD_SHIFT);
SPEX(temps_hysteresis, SSB_SPROM8_TEMPDELTA,
SSB_SPROM8_TEMPDELTA_HYSTERESIS,
SSB_SPROM8_TEMPDELTA_HYSTERESIS_SHIFT);
}
/*
* Indicates the presence of external SPROM.
*/
static bool bcma_sprom_ext_available(struct bcma_bus *bus)
{
u32 chip_status;
u32 srom_control;
u32 present_mask;
if (bus->drv_cc.core->id.rev >= 31) {
if (!(bus->drv_cc.capabilities & BCMA_CC_CAP_SPROM))
return false;
srom_control = bcma_read32(bus->drv_cc.core,
BCMA_CC_SROM_CONTROL);
return srom_control & BCMA_CC_SROM_CONTROL_PRESENT;
}
/* older chipcommon revisions use chip status register */
chip_status = bcma_read32(bus->drv_cc.core, BCMA_CC_CHIPSTAT);
switch (bus->chipinfo.id) {
case BCMA_CHIP_ID_BCM4313:
present_mask = BCMA_CC_CHIPST_4313_SPROM_PRESENT;
break;
case BCMA_CHIP_ID_BCM4331:
present_mask = BCMA_CC_CHIPST_4331_SPROM_PRESENT;
break;
default:
return true;
}
return chip_status & present_mask;
}
/*
* Indicates that on-chip OTP memory is present and enabled.
*/
static bool bcma_sprom_onchip_available(struct bcma_bus *bus)
{
u32 chip_status;
u32 otpsize = 0;
bool present;
chip_status = bcma_read32(bus->drv_cc.core, BCMA_CC_CHIPSTAT);
switch (bus->chipinfo.id) {
case BCMA_CHIP_ID_BCM4313:
present = chip_status & BCMA_CC_CHIPST_4313_OTP_PRESENT;
break;
case BCMA_CHIP_ID_BCM4331:
present = chip_status & BCMA_CC_CHIPST_4331_OTP_PRESENT;
break;
case BCMA_CHIP_ID_BCM43142:
case BCMA_CHIP_ID_BCM43224:
case BCMA_CHIP_ID_BCM43225:
/* for these chips OTP is always available */
present = true;
break;
case BCMA_CHIP_ID_BCM43131:
case BCMA_CHIP_ID_BCM43217:
case BCMA_CHIP_ID_BCM43227:
case BCMA_CHIP_ID_BCM43228:
case BCMA_CHIP_ID_BCM43428:
present = chip_status & BCMA_CC_CHIPST_43228_OTP_PRESENT;
break;
default:
present = false;
break;
}
if (present) {
otpsize = bus->drv_cc.capabilities & BCMA_CC_CAP_OTPS;
otpsize >>= BCMA_CC_CAP_OTPS_SHIFT;
}
return otpsize != 0;
}
/*
* Verify OTP is filled and determine the byte
* offset where SPROM data is located.
*
* On error, returns 0; byte offset otherwise.
*/
static int bcma_sprom_onchip_offset(struct bcma_bus *bus)
{
struct bcma_device *cc = bus->drv_cc.core;
u32 offset;
/* verify OTP status */
if ((bcma_read32(cc, BCMA_CC_OTPS) & BCMA_CC_OTPS_GU_PROG_HW) == 0)
return 0;
/* obtain bit offset from otplayout register */
offset = (bcma_read32(cc, BCMA_CC_OTPL) & BCMA_CC_OTPL_GURGN_OFFSET);
return BCMA_CC_SPROM + (offset >> 3);
}
int bcma_sprom_get(struct bcma_bus *bus)
{
u16 offset = BCMA_CC_SPROM;
u16 *sprom;
size_t sprom_sizes[] = { SSB_SPROMSIZE_WORDS_R4,
SSB_SPROMSIZE_WORDS_R10,
SSB_SPROMSIZE_WORDS_R11, };
int i, err = 0;
if (!bus->drv_cc.core)
return -EOPNOTSUPP;
if (!bcma_sprom_ext_available(bus)) {
bool sprom_onchip;
/*
* External SPROM takes precedence so check
* on-chip OTP only when no external SPROM
* is present.
*/
sprom_onchip = bcma_sprom_onchip_available(bus);
if (sprom_onchip) {
/* determine offset */
offset = bcma_sprom_onchip_offset(bus);
}
if (!offset || !sprom_onchip) {
/*
* Maybe there is no SPROM on the device?
* Now we ask the arch code if there is some sprom
* available for this device in some other storage.
*/
err = bcma_fill_sprom_with_fallback(bus, &bus->sprom);
return err;
}
}
if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4331 ||
bus->chipinfo.id == BCMA_CHIP_ID_BCM43431)
bcma_chipco_bcm4331_ext_pa_lines_ctl(&bus->drv_cc, false);
bcma_debug(bus, "SPROM offset 0x%x\n", offset);
for (i = 0; i < ARRAY_SIZE(sprom_sizes); i++) {
size_t words = sprom_sizes[i];
sprom = kcalloc(words, sizeof(u16), GFP_KERNEL);
if (!sprom)
return -ENOMEM;
bcma_sprom_read(bus, offset, sprom, words);
err = bcma_sprom_valid(bus, sprom, words);
if (!err)
break;
kfree(sprom);
}
if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4331 ||
bus->chipinfo.id == BCMA_CHIP_ID_BCM43431)
bcma_chipco_bcm4331_ext_pa_lines_ctl(&bus->drv_cc, true);
if (err) {
bcma_warn(bus, "Invalid SPROM read from the PCIe card, trying to use fallback SPROM\n");
err = bcma_fill_sprom_with_fallback(bus, &bus->sprom);
} else {
bcma_sprom_extract_r8(bus, sprom);
kfree(sprom);
}
return err;
}