diff options
Diffstat (limited to 'drivers/net/wireless/bcm4329/bcmspibrcm.c')
| -rw-r--r-- | drivers/net/wireless/bcm4329/bcmspibrcm.c | 1726 |
1 files changed, 1726 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcm4329/bcmspibrcm.c b/drivers/net/wireless/bcm4329/bcmspibrcm.c new file mode 100644 index 0000000..0f131a4 --- /dev/null +++ b/drivers/net/wireless/bcm4329/bcmspibrcm.c @@ -0,0 +1,1726 @@ +/* + * Broadcom BCMSDH to gSPI Protocol Conversion Layer + * + * Copyright (C) 2010, Broadcom Corporation + * All Rights Reserved. + * + * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Broadcom Corporation; + * the contents of this file may not be disclosed to third parties, copied + * or duplicated in any form, in whole or in part, without the prior + * written permission of Broadcom Corporation. + * + * $Id: bcmspibrcm.c,v 1.11.2.10.2.9.6.11 2009/05/21 13:21:57 Exp $ + */ + +#define HSMODE + +#include <typedefs.h> + +#include <bcmdevs.h> +#include <bcmendian.h> +#include <bcmutils.h> +#include <osl.h> +#include <hndsoc.h> +#include <siutils.h> +#include <sbchipc.h> +#include <sbsdio.h> +#include <spid.h> + +#include <bcmsdbus.h> /* bcmsdh to/from specific controller APIs */ +#include <sdiovar.h> /* ioctl/iovars */ +#include <sdio.h> + +#include <pcicfg.h> + + +#include <bcmspibrcm.h> +#include <bcmspi.h> + +#define F0_RESPONSE_DELAY 16 +#define F1_RESPONSE_DELAY 16 +#define F2_RESPONSE_DELAY F0_RESPONSE_DELAY + +#define CMDLEN 4 + +#define DWORDMODE_ON (sd->chip == BCM4329_CHIP_ID) && (sd->chiprev == 2) && (sd->dwordmode == TRUE) + +/* Globals */ +uint sd_msglevel = 0; + +uint sd_hiok = FALSE; /* Use hi-speed mode if available? */ +uint sd_sdmode = SDIOH_MODE_SPI; /* Use SD4 mode by default */ +uint sd_f2_blocksize = 64; /* Default blocksize */ + + +uint sd_divisor = 2; +uint sd_power = 1; /* Default to SD Slot powered ON */ +uint sd_clock = 1; /* Default to SD Clock turned ON */ +uint sd_crc = 0; /* Default to SPI CRC Check turned OFF */ + +uint8 spi_outbuf[SPI_MAX_PKT_LEN]; +uint8 spi_inbuf[SPI_MAX_PKT_LEN]; + +/* 128bytes buffer is enough to clear data-not-available and program response-delay F0 bits + * assuming we will not exceed F0 response delay > 100 bytes at 48MHz. + */ +#define BUF2_PKT_LEN 128 +uint8 spi_outbuf2[BUF2_PKT_LEN]; +uint8 spi_inbuf2[BUF2_PKT_LEN]; + +/* Prototypes */ +static bool bcmspi_test_card(sdioh_info_t *sd); +static bool bcmspi_host_device_init_adapt(sdioh_info_t *sd); +static int bcmspi_set_highspeed_mode(sdioh_info_t *sd, bool hsmode); +static int bcmspi_cmd_issue(sdioh_info_t *sd, bool use_dma, uint32 cmd_arg, + uint32 *data, uint32 datalen); +static int bcmspi_card_regread(sdioh_info_t *sd, int func, uint32 regaddr, + int regsize, uint32 *data); +static int bcmspi_card_regwrite(sdioh_info_t *sd, int func, uint32 regaddr, + int regsize, uint32 data); +static int bcmspi_card_bytewrite(sdioh_info_t *sd, int func, uint32 regaddr, + uint8 *data); +static int bcmspi_driver_init(sdioh_info_t *sd); +static int bcmspi_card_buf(sdioh_info_t *sd, int rw, int func, bool fifo, + uint32 addr, int nbytes, uint32 *data); +static int bcmspi_card_regread_fixedaddr(sdioh_info_t *sd, int func, uint32 regaddr, int regsize, + uint32 *data); +static void bcmspi_cmd_getdstatus(sdioh_info_t *sd, uint32 *dstatus_buffer); +static int bcmspi_update_stats(sdioh_info_t *sd, uint32 cmd_arg); + +/* + * Public entry points & extern's + */ +extern sdioh_info_t * +sdioh_attach(osl_t *osh, void *bar0, uint irq) +{ + sdioh_info_t *sd; + + sd_trace(("%s\n", __FUNCTION__)); + if ((sd = (sdioh_info_t *)MALLOC(osh, sizeof(sdioh_info_t))) == NULL) { + sd_err(("%s: out of memory, malloced %d bytes\n", __FUNCTION__, MALLOCED(osh))); + return NULL; + } + bzero((char *)sd, sizeof(sdioh_info_t)); + sd->osh = osh; + if (spi_osinit(sd) != 0) { + sd_err(("%s: spi_osinit() failed\n", __FUNCTION__)); + MFREE(sd->osh, sd, sizeof(sdioh_info_t)); + return NULL; + } + + sd->bar0 = bar0; + sd->irq = irq; + sd->intr_handler = NULL; + sd->intr_handler_arg = NULL; + sd->intr_handler_valid = FALSE; + + /* Set defaults */ + sd->use_client_ints = TRUE; + sd->sd_use_dma = FALSE; /* DMA Not supported */ + + /* Spi device default is 16bit mode, change to 4 when device is changed to 32bit + * mode + */ + sd->wordlen = 2; + + if (!spi_hw_attach(sd)) { + sd_err(("%s: spi_hw_attach() failed\n", __FUNCTION__)); + spi_osfree(sd); + MFREE(sd->osh, sd, sizeof(sdioh_info_t)); + return (NULL); + } + + if (bcmspi_driver_init(sd) != SUCCESS) { + sd_err(("%s: bcmspi_driver_init() failed()\n", __FUNCTION__)); + spi_hw_detach(sd); + spi_osfree(sd); + MFREE(sd->osh, sd, sizeof(sdioh_info_t)); + return (NULL); + } + + if (spi_register_irq(sd, irq) != SUCCESS) { + sd_err(("%s: spi_register_irq() failed for irq = %d\n", __FUNCTION__, irq)); + spi_hw_detach(sd); + spi_osfree(sd); + MFREE(sd->osh, sd, sizeof(sdioh_info_t)); + return (NULL); + } + + sd_trace(("%s: Done\n", __FUNCTION__)); + + return sd; +} + +extern SDIOH_API_RC +sdioh_detach(osl_t *osh, sdioh_info_t *sd) +{ + sd_trace(("%s\n", __FUNCTION__)); + if (sd) { + sd_err(("%s: detaching from hardware\n", __FUNCTION__)); + spi_free_irq(sd->irq, sd); + spi_hw_detach(sd); + spi_osfree(sd); + MFREE(sd->osh, sd, sizeof(sdioh_info_t)); + } + return SDIOH_API_RC_SUCCESS; +} + +/* Configure callback to client when we recieve client interrupt */ +extern SDIOH_API_RC +sdioh_interrupt_register(sdioh_info_t *sd, sdioh_cb_fn_t fn, void *argh) +{ + sd_trace(("%s: Entering\n", __FUNCTION__)); + sd->intr_handler = fn; + sd->intr_handler_arg = argh; + sd->intr_handler_valid = TRUE; + return SDIOH_API_RC_SUCCESS; +} + +extern SDIOH_API_RC +sdioh_interrupt_deregister(sdioh_info_t *sd) +{ + sd_trace(("%s: Entering\n", __FUNCTION__)); + sd->intr_handler_valid = FALSE; + sd->intr_handler = NULL; + sd->intr_handler_arg = NULL; + return SDIOH_API_RC_SUCCESS; +} + +extern SDIOH_API_RC +sdioh_interrupt_query(sdioh_info_t *sd, bool *onoff) +{ + sd_trace(("%s: Entering\n", __FUNCTION__)); + *onoff = sd->client_intr_enabled; + return SDIOH_API_RC_SUCCESS; +} + +#if defined(DHD_DEBUG) +extern bool +sdioh_interrupt_pending(sdioh_info_t *sd) +{ + return 0; +} +#endif + +extern SDIOH_API_RC +sdioh_query_device(sdioh_info_t *sd) +{ + /* Return a BRCM ID appropriate to the dongle class */ + return (sd->num_funcs > 1) ? BCM4329_D11NDUAL_ID : BCM4318_D11G_ID; +} + +/* Provide dstatus bits of spi-transaction for dhd layers. */ +extern uint32 +sdioh_get_dstatus(sdioh_info_t *sd) +{ + return sd->card_dstatus; +} + +extern void +sdioh_chipinfo(sdioh_info_t *sd, uint32 chip, uint32 chiprev) +{ + sd->chip = chip; + sd->chiprev = chiprev; +} + +extern void +sdioh_dwordmode(sdioh_info_t *sd, bool set) +{ + uint8 reg = 0; + int status; + + if ((status = sdioh_request_byte(sd, SDIOH_READ, SPI_FUNC_0, SPID_STATUS_ENABLE, ®)) != + SUCCESS) { + sd_err(("%s: Failed to set dwordmode in gSPI\n", __FUNCTION__)); + return; + } + + if (set) { + reg |= DWORD_PKT_LEN_EN; + sd->dwordmode = TRUE; + sd->client_block_size[SPI_FUNC_2] = 4096; /* h2spi's limit is 4KB, we support 8KB */ + } else { + reg &= ~DWORD_PKT_LEN_EN; + sd->dwordmode = FALSE; + sd->client_block_size[SPI_FUNC_2] = 2048; + } + + if ((status = sdioh_request_byte(sd, SDIOH_WRITE, SPI_FUNC_0, SPID_STATUS_ENABLE, ®)) != + SUCCESS) { + sd_err(("%s: Failed to set dwordmode in gSPI\n", __FUNCTION__)); + return; + } +} + + +uint +sdioh_query_iofnum(sdioh_info_t *sd) +{ + return sd->num_funcs; +} + +/* IOVar table */ +enum { + IOV_MSGLEVEL = 1, + IOV_BLOCKMODE, + IOV_BLOCKSIZE, + IOV_DMA, + IOV_USEINTS, + IOV_NUMINTS, + IOV_NUMLOCALINTS, + IOV_HOSTREG, + IOV_DEVREG, + IOV_DIVISOR, + IOV_SDMODE, + IOV_HISPEED, + IOV_HCIREGS, + IOV_POWER, + IOV_CLOCK, + IOV_SPIERRSTATS, + IOV_RESP_DELAY_ALL +}; + +const bcm_iovar_t sdioh_iovars[] = { + {"sd_msglevel", IOV_MSGLEVEL, 0, IOVT_UINT32, 0 }, + {"sd_blocksize", IOV_BLOCKSIZE, 0, IOVT_UINT32, 0 }, /* ((fn << 16) | size) */ + {"sd_dma", IOV_DMA, 0, IOVT_BOOL, 0 }, + {"sd_ints", IOV_USEINTS, 0, IOVT_BOOL, 0 }, + {"sd_numints", IOV_NUMINTS, 0, IOVT_UINT32, 0 }, + {"sd_numlocalints", IOV_NUMLOCALINTS, 0, IOVT_UINT32, 0 }, + {"sd_hostreg", IOV_HOSTREG, 0, IOVT_BUFFER, sizeof(sdreg_t) }, + {"sd_devreg", IOV_DEVREG, 0, IOVT_BUFFER, sizeof(sdreg_t) }, + {"sd_divisor", IOV_DIVISOR, 0, IOVT_UINT32, 0 }, + {"sd_power", IOV_POWER, 0, IOVT_UINT32, 0 }, + {"sd_clock", IOV_CLOCK, 0, IOVT_UINT32, 0 }, + {"sd_mode", IOV_SDMODE, 0, IOVT_UINT32, 100}, + {"sd_highspeed", IOV_HISPEED, 0, IOVT_UINT32, 0}, + {"spi_errstats", IOV_SPIERRSTATS, 0, IOVT_BUFFER, sizeof(struct spierrstats_t) }, + {"spi_respdelay", IOV_RESP_DELAY_ALL, 0, IOVT_BOOL, 0 }, + {NULL, 0, 0, 0, 0 } +}; + +int +sdioh_iovar_op(sdioh_info_t *si, const char *name, + void *params, int plen, void *arg, int len, bool set) +{ + const bcm_iovar_t *vi = NULL; + int bcmerror = 0; + int val_size; + int32 int_val = 0; + bool bool_val; + uint32 actionid; +/* + sdioh_regs_t *regs; +*/ + + ASSERT(name); + ASSERT(len >= 0); + + /* Get must have return space; Set does not take qualifiers */ + ASSERT(set || (arg && len)); + ASSERT(!set || (!params && !plen)); + + sd_trace(("%s: Enter (%s %s)\n", __FUNCTION__, (set ? "set" : "get"), name)); + + if ((vi = bcm_iovar_lookup(sdioh_iovars, name)) == NULL) { + bcmerror = BCME_UNSUPPORTED; + goto exit; + } + + if ((bcmerror = bcm_iovar_lencheck(vi, arg, len, set)) != 0) + goto exit; + + /* Set up params so get and set can share the convenience variables */ + if (params == NULL) { + params = arg; + plen = len; + } + + if (vi->type == IOVT_VOID) + val_size = 0; + else if (vi->type == IOVT_BUFFER) + val_size = len; + else + val_size = sizeof(int); + + if (plen >= (int)sizeof(int_val)) + bcopy(params, &int_val, sizeof(int_val)); + + bool_val = (int_val != 0) ? TRUE : FALSE; + + actionid = set ? IOV_SVAL(vi->varid) : IOV_GVAL(vi->varid); + switch (actionid) { + case IOV_GVAL(IOV_MSGLEVEL): + int_val = (int32)sd_msglevel; + bcopy(&int_val, arg, val_size); + break; + + case IOV_SVAL(IOV_MSGLEVEL): + sd_msglevel = int_val; + break; + + case IOV_GVAL(IOV_BLOCKSIZE): + if ((uint32)int_val > si->num_funcs) { + bcmerror = BCME_BADARG; + break; + } + int_val = (int32)si->client_block_size[int_val]; + bcopy(&int_val, arg, val_size); + break; + + case IOV_GVAL(IOV_DMA): + int_val = (int32)si->sd_use_dma; + bcopy(&int_val, arg, val_size); + break; + + case IOV_SVAL(IOV_DMA): + si->sd_use_dma = (bool)int_val; + break; + + case IOV_GVAL(IOV_USEINTS): + int_val = (int32)si->use_client_ints; + bcopy(&int_val, arg, val_size); + break; + + case IOV_SVAL(IOV_USEINTS): + break; + + case IOV_GVAL(IOV_DIVISOR): + int_val = (uint32)sd_divisor; + bcopy(&int_val, arg, val_size); + break; + + case IOV_SVAL(IOV_DIVISOR): + sd_divisor = int_val; + if (!spi_start_clock(si, (uint16)sd_divisor)) { + sd_err(("%s: set clock failed\n", __FUNCTION__)); + bcmerror = BCME_ERROR; + } + break; + + case IOV_GVAL(IOV_POWER): + int_val = (uint32)sd_power; + bcopy(&int_val, arg, val_size); + break; + + case IOV_SVAL(IOV_POWER): + sd_power = int_val; + break; + + case IOV_GVAL(IOV_CLOCK): + int_val = (uint32)sd_clock; + bcopy(&int_val, arg, val_size); + break; + + case IOV_SVAL(IOV_CLOCK): + sd_clock = int_val; + break; + + case IOV_GVAL(IOV_SDMODE): + int_val = (uint32)sd_sdmode; + bcopy(&int_val, arg, val_size); + break; + + case IOV_SVAL(IOV_SDMODE): + sd_sdmode = int_val; + break; + + case IOV_GVAL(IOV_HISPEED): + int_val = (uint32)sd_hiok; + bcopy(&int_val, arg, val_size); + break; + + case IOV_SVAL(IOV_HISPEED): + sd_hiok = int_val; + + if (!bcmspi_set_highspeed_mode(si, (bool)sd_hiok)) { + sd_err(("%s: Failed changing highspeed mode to %d.\n", + __FUNCTION__, sd_hiok)); + bcmerror = BCME_ERROR; + return ERROR; + } + break; + + case IOV_GVAL(IOV_NUMINTS): + int_val = (int32)si->intrcount; + bcopy(&int_val, arg, val_size); + break; + + case IOV_GVAL(IOV_NUMLOCALINTS): + int_val = (int32)si->local_intrcount; + bcopy(&int_val, arg, val_size); + break; + case IOV_GVAL(IOV_DEVREG): + { + sdreg_t *sd_ptr = (sdreg_t *)params; + uint8 data; + + if (sdioh_cfg_read(si, sd_ptr->func, sd_ptr->offset, &data)) { + bcmerror = BCME_SDIO_ERROR; + break; + } + + int_val = (int)data; + bcopy(&int_val, arg, sizeof(int_val)); + break; + } + + case IOV_SVAL(IOV_DEVREG): + { + sdreg_t *sd_ptr = (sdreg_t *)params; + uint8 data = (uint8)sd_ptr->value; + + if (sdioh_cfg_write(si, sd_ptr->func, sd_ptr->offset, &data)) { + bcmerror = BCME_SDIO_ERROR; + break; + } + break; + } + + + case IOV_GVAL(IOV_SPIERRSTATS): + { + bcopy(&si->spierrstats, arg, sizeof(struct spierrstats_t)); + break; + } + + case IOV_SVAL(IOV_SPIERRSTATS): + { + bzero(&si->spierrstats, sizeof(struct spierrstats_t)); + break; + } + + case IOV_GVAL(IOV_RESP_DELAY_ALL): + int_val = (int32)si->resp_delay_all; + bcopy(&int_val, arg, val_size); + break; + + case IOV_SVAL(IOV_RESP_DELAY_ALL): + si->resp_delay_all = (bool)int_val; + int_val = STATUS_ENABLE|INTR_WITH_STATUS; + if (si->resp_delay_all) + int_val |= RESP_DELAY_ALL; + else { + if (bcmspi_card_regwrite(si, SPI_FUNC_0, SPID_RESPONSE_DELAY, 1, + F1_RESPONSE_DELAY) != SUCCESS) { + sd_err(("%s: Unable to set response delay.\n", __FUNCTION__)); + bcmerror = BCME_SDIO_ERROR; + break; + } + } + + if (bcmspi_card_regwrite(si, SPI_FUNC_0, SPID_STATUS_ENABLE, 1, int_val) + != SUCCESS) { + sd_err(("%s: Unable to set response delay.\n", __FUNCTION__)); + bcmerror = BCME_SDIO_ERROR; + break; + } + break; + + default: + bcmerror = BCME_UNSUPPORTED; + break; + } +exit: + + return bcmerror; +} + +extern SDIOH_API_RC +sdioh_cfg_read(sdioh_info_t *sd, uint fnc_num, uint32 addr, uint8 *data) +{ + SDIOH_API_RC status; + /* No lock needed since sdioh_request_byte does locking */ + status = sdioh_request_byte(sd, SDIOH_READ, fnc_num, addr, data); + return status; +} + +extern SDIOH_API_RC +sdioh_cfg_write(sdioh_info_t *sd, uint fnc_num, uint32 addr, uint8 *data) +{ + /* No lock needed since sdioh_request_byte does locking */ + SDIOH_API_RC status; + + if ((fnc_num == SPI_FUNC_1) && (addr == SBSDIO_FUNC1_FRAMECTRL)) { + uint8 dummy_data; + status = sdioh_cfg_read(sd, fnc_num, addr, &dummy_data); + if (status) { + sd_err(("sdioh_cfg_read() failed.\n")); + return status; + } + } + + status = sdioh_request_byte(sd, SDIOH_WRITE, fnc_num, addr, data); + return status; +} + +extern SDIOH_API_RC +sdioh_cis_read(sdioh_info_t *sd, uint func, uint8 *cisd, uint32 length) +{ + uint32 count; + int offset; + uint32 cis_byte; + uint16 *cis = (uint16 *)cisd; + uint bar0 = SI_ENUM_BASE; + int status; + uint8 data; + + sd_trace(("%s: Func %d\n", __FUNCTION__, func)); + + spi_lock(sd); + + /* Set sb window address to 0x18000000 */ + data = (bar0 >> 8) & SBSDIO_SBADDRLOW_MASK; + status = bcmspi_card_bytewrite(sd, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW, &data); + if (status == SUCCESS) { + data = (bar0 >> 16) & SBSDIO_SBADDRMID_MASK; + status = bcmspi_card_bytewrite(sd, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRMID, &data); + } else { + sd_err(("%s: Unable to set sb-addr-windows\n", __FUNCTION__)); + spi_unlock(sd); + return (BCME_ERROR); + } + if (status == SUCCESS) { + data = (bar0 >> 24) & SBSDIO_SBADDRHIGH_MASK; + status = bcmspi_card_bytewrite(sd, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRHIGH, &data); + } else { + sd_err(("%s: Unable to set sb-addr-windows\n", __FUNCTION__)); + spi_unlock(sd); + return (BCME_ERROR); + } + + offset = CC_OTP; /* OTP offset in chipcommon. */ + for (count = 0; count < length/2; count++) { + if (bcmspi_card_regread (sd, SDIO_FUNC_1, offset, 2, &cis_byte) < 0) { + sd_err(("%s: regread failed: Can't read CIS\n", __FUNCTION__)); + spi_unlock(sd); + return (BCME_ERROR); + } + + *cis = (uint16)cis_byte; + cis++; + offset += 2; + } + + spi_unlock(sd); + + return (BCME_OK); +} + +extern SDIOH_API_RC +sdioh_request_byte(sdioh_info_t *sd, uint rw, uint func, uint regaddr, uint8 *byte) +{ + int status; + uint32 cmd_arg; + uint32 dstatus; + uint32 data = (uint32)(*byte); + + spi_lock(sd); + + cmd_arg = 0; + cmd_arg = SFIELD(cmd_arg, SPI_FUNCTION, func); + cmd_arg = SFIELD(cmd_arg, SPI_ACCESS, 1); /* Incremental access */ + cmd_arg = SFIELD(cmd_arg, SPI_REG_ADDR, regaddr); + cmd_arg = SFIELD(cmd_arg, SPI_RW_FLAG, rw == SDIOH_READ ? 0 : 1); + cmd_arg = SFIELD(cmd_arg, SPI_LEN, 1); + + sd_trace(("%s cmd_arg = 0x%x\n", __FUNCTION__, cmd_arg)); + sd_trace(("%s: rw=%d, func=%d, regaddr=0x%08x, data=0x%x\n", __FUNCTION__, rw, func, + regaddr, data)); + + if ((status = bcmspi_cmd_issue(sd, sd->sd_use_dma, + cmd_arg, &data, 1)) != SUCCESS) { + spi_unlock(sd); + return status; + } + + if (rw == SDIOH_READ) + *byte = (uint8)data; + + bcmspi_cmd_getdstatus(sd, &dstatus); + if (dstatus) + sd_trace(("dstatus =0x%x\n", dstatus)); + + spi_unlock(sd); + return SDIOH_API_RC_SUCCESS; +} + +extern SDIOH_API_RC +sdioh_request_word(sdioh_info_t *sd, uint cmd_type, uint rw, uint func, uint addr, + uint32 *word, uint nbytes) +{ + int status; + + spi_lock(sd); + + if (rw == SDIOH_READ) + status = bcmspi_card_regread(sd, func, addr, nbytes, word); + else + status = bcmspi_card_regwrite(sd, func, addr, nbytes, *word); + + spi_unlock(sd); + return (status == SUCCESS ? SDIOH_API_RC_SUCCESS : SDIOH_API_RC_FAIL); +} + +extern SDIOH_API_RC +sdioh_request_buffer(sdioh_info_t *sd, uint pio_dma, uint fix_inc, uint rw, uint func, + uint addr, uint reg_width, uint buflen_u, uint8 *buffer, void *pkt) +{ + int len; + int buflen = (int)buflen_u; + bool fifo = (fix_inc == SDIOH_DATA_FIX); + + spi_lock(sd); + + ASSERT(reg_width == 4); + ASSERT(buflen_u < (1 << 30)); + ASSERT(sd->client_block_size[func]); + + sd_data(("%s: %c len %d r_cnt %d t_cnt %d, pkt @0x%p\n", + __FUNCTION__, rw == SDIOH_READ ? 'R' : 'W', + buflen_u, sd->r_cnt, sd->t_cnt, pkt)); + + /* Break buffer down into blocksize chunks. */ + while (buflen > 0) { + len = MIN(sd->client_block_size[func], buflen); + if (bcmspi_card_buf(sd, rw, func, fifo, addr, len, (uint32 *)buffer) != SUCCESS) { + sd_err(("%s: bcmspi_card_buf %s failed\n", + __FUNCTION__, rw == SDIOH_READ ? "Read" : "Write")); + spi_unlock(sd); + return SDIOH_API_RC_FAIL; + } + buffer += len; + buflen -= len; + if (!fifo) + addr += len; + } + spi_unlock(sd); + return SDIOH_API_RC_SUCCESS; +} + +/* This function allows write to gspi bus when another rd/wr function is deep down the call stack. + * Its main aim is to have simpler spi writes rather than recursive writes. + * e.g. When there is a need to program response delay on the fly after detecting the SPI-func + * this call will allow to program the response delay. + */ +static int +bcmspi_card_byterewrite(sdioh_info_t *sd, int func, uint32 regaddr, uint8 byte) +{ + uint32 cmd_arg; + uint32 datalen = 1; + uint32 hostlen; + + cmd_arg = 0; + + cmd_arg = SFIELD(cmd_arg, SPI_RW_FLAG, 1); + cmd_arg = SFIELD(cmd_arg, SPI_ACCESS, 1); /* Incremental access */ + cmd_arg = SFIELD(cmd_arg, SPI_FUNCTION, func); + cmd_arg = SFIELD(cmd_arg, SPI_REG_ADDR, regaddr); + cmd_arg = SFIELD(cmd_arg, SPI_LEN, datalen); + + sd_trace(("%s cmd_arg = 0x%x\n", __FUNCTION__, cmd_arg)); + + + /* Set up and issue the SPI command. MSByte goes out on bus first. Increase datalen + * according to the wordlen mode(16/32bit) the device is in. + */ + ASSERT(sd->wordlen == 4 || sd->wordlen == 2); + datalen = ROUNDUP(datalen, sd->wordlen); + + /* Start by copying command in the spi-outbuffer */ + if (sd->wordlen == 4) { /* 32bit spid */ + *(uint32 *)spi_outbuf2 = bcmswap32(cmd_arg); + if (datalen & 0x3) + datalen += (4 - (datalen & 0x3)); + } else if (sd->wordlen == 2) { /* 16bit spid */ + *(uint16 *)spi_outbuf2 = bcmswap16(cmd_arg & 0xffff); + *(uint16 *)&spi_outbuf2[2] = bcmswap16((cmd_arg & 0xffff0000) >> 16); + if (datalen & 0x1) + datalen++; + } else { + sd_err(("%s: Host is %d bit spid, could not create SPI command.\n", + __FUNCTION__, 8 * sd->wordlen)); + return ERROR; + } + + /* for Write, put the data into the output buffer */ + if (datalen != 0) { + if (sd->wordlen == 4) { /* 32bit spid */ + *(uint32 *)&spi_outbuf2[CMDLEN] = bcmswap32(byte); + } else if (sd->wordlen == 2) { /* 16bit spid */ + *(uint16 *)&spi_outbuf2[CMDLEN] = bcmswap16(byte & 0xffff); + *(uint16 *)&spi_outbuf2[CMDLEN + 2] = + bcmswap16((byte & 0xffff0000) >> 16); + } + } + + /* +4 for cmd, +4 for dstatus */ + hostlen = datalen + 8; + hostlen += (4 - (hostlen & 0x3)); + spi_sendrecv(sd, spi_outbuf2, spi_inbuf2, hostlen); + + /* Last 4bytes are dstatus. Device is configured to return status bits. */ + if (sd->wordlen == 4) { /* 32bit spid */ + sd->card_dstatus = bcmswap32(*(uint32 *)&spi_inbuf2[datalen + CMDLEN ]); + } else if (sd->wordlen == 2) { /* 16bit spid */ + sd->card_dstatus = (bcmswap16(*(uint16 *)&spi_inbuf2[datalen + CMDLEN ]) | + (bcmswap16(*(uint16 *)&spi_inbuf2[datalen + CMDLEN + 2]) << 16)); + } else { + sd_err(("%s: Host is %d bit machine, could not read SPI dstatus.\n", + __FUNCTION__, 8 * sd->wordlen)); + return ERROR; + } + + if (sd->card_dstatus) + sd_trace(("dstatus after byte rewrite = 0x%x\n", sd->card_dstatus)); + + return (BCME_OK); +} + +/* Program the response delay corresponding to the spi function */ +static int +bcmspi_prog_resp_delay(sdioh_info_t *sd, int func, uint8 resp_delay) +{ + if (sd->resp_delay_all == FALSE) + return (BCME_OK); + + if (sd->prev_fun == func) + return (BCME_OK); + + if (F0_RESPONSE_DELAY == F1_RESPONSE_DELAY) + return (BCME_OK); + + bcmspi_card_byterewrite(sd, SPI_FUNC_0, SPID_RESPONSE_DELAY, resp_delay); + + /* Remember function for which to avoid reprogramming resp-delay in next iteration */ + sd->prev_fun = func; + + return (BCME_OK); + +} + +#define GSPI_RESYNC_PATTERN 0x0 + +/* A resync pattern is a 32bit MOSI line with all zeros. Its a special command in gSPI. + * It resets the spi-bkplane logic so that all F1 related ping-pong buffer logic is + * synchronised and all queued resuests are cancelled. + */ +static int +bcmspi_resync_f1(sdioh_info_t *sd) +{ + uint32 cmd_arg = GSPI_RESYNC_PATTERN, data = 0, datalen = 0; + + + /* Set up and issue the SPI command. MSByte goes out on bus first. Increase datalen + * according to the wordlen mode(16/32bit) the device is in. + */ + ASSERT(sd->wordlen == 4 || sd->wordlen == 2); + datalen = ROUNDUP(datalen, sd->wordlen); + + /* Start by copying command in the spi-outbuffer */ + *(uint32 *)spi_outbuf2 = cmd_arg; + + /* for Write, put the data into the output buffer */ + *(uint32 *)&spi_outbuf2[CMDLEN] = data; + + /* +4 for cmd, +4 for dstatus */ + spi_sendrecv(sd, spi_outbuf2, spi_inbuf2, datalen + 8); + + /* Last 4bytes are dstatus. Device is configured to return status bits. */ + if (sd->wordlen == 4) { /* 32bit spid */ + sd->card_dstatus = bcmswap32(*(uint32 *)&spi_inbuf2[datalen + CMDLEN ]); + } else if (sd->wordlen == 2) { /* 16bit spid */ + sd->card_dstatus = (bcmswap16(*(uint16 *)&spi_inbuf2[datalen + CMDLEN ]) | + (bcmswap16(*(uint16 *)&spi_inbuf2[datalen + CMDLEN + 2]) << 16)); + } else { + sd_err(("%s: Host is %d bit machine, could not read SPI dstatus.\n", + __FUNCTION__, 8 * sd->wordlen)); + return ERROR; + } + + if (sd->card_dstatus) + sd_trace(("dstatus after resync pattern write = 0x%x\n", sd->card_dstatus)); + + return (BCME_OK); +} + +uint32 dstatus_count = 0; + +static int +bcmspi_update_stats(sdioh_info_t *sd, uint32 cmd_arg) +{ + uint32 dstatus = sd->card_dstatus; + struct spierrstats_t *spierrstats = &sd->spierrstats; + int err = SUCCESS; + + sd_trace(("cmd = 0x%x, dstatus = 0x%x\n", cmd_arg, dstatus)); + + /* Store dstatus of last few gSPI transactions */ + spierrstats->dstatus[dstatus_count % NUM_PREV_TRANSACTIONS] = dstatus; + spierrstats->spicmd[dstatus_count % NUM_PREV_TRANSACTIONS] = cmd_arg; + dstatus_count++; + + if (sd->card_init_done == FALSE) + return err; + + if (dstatus & STATUS_DATA_NOT_AVAILABLE) { + spierrstats->dna++; + sd_trace(("Read data not available on F1 addr = 0x%x\n", + GFIELD(cmd_arg, SPI_REG_ADDR))); + /* Clear dna bit */ + bcmspi_card_byterewrite(sd, SPI_FUNC_0, SPID_INTR_REG, DATA_UNAVAILABLE); + } + + if (dstatus & STATUS_UNDERFLOW) { + spierrstats->rdunderflow++; + sd_err(("FIFO underflow happened due to current F2 read command.\n")); + } + + if (dstatus & STATUS_OVERFLOW) { + spierrstats->wroverflow++; + sd_err(("FIFO overflow happened due to current (F1/F2) write command.\n")); + if ((sd->chip == BCM4329_CHIP_ID) && (sd->chiprev == 0)) { + bcmspi_card_byterewrite(sd, SPI_FUNC_0, SPID_INTR_REG, F1_OVERFLOW); + bcmspi_resync_f1(sd); + sd_err(("Recovering from F1 FIFO overflow.\n")); + } else { + err = ERROR_OF; + } + } + + if (dstatus & STATUS_F2_INTR) { + spierrstats->f2interrupt++; + sd_trace(("Interrupt from F2. SW should clear corresponding IntStatus bits\n")); + } + + if (dstatus & STATUS_F3_INTR) { + spierrstats->f3interrupt++; + sd_err(("Interrupt from F3. SW should clear corresponding IntStatus bits\n")); + } + + if (dstatus & STATUS_HOST_CMD_DATA_ERR) { + spierrstats->hostcmddataerr++; + sd_err(("Error in CMD or Host data, detected by CRC/Checksum (optional)\n")); + } + + if (dstatus & STATUS_F2_PKT_AVAILABLE) { + spierrstats->f2pktavailable++; + sd_trace(("Packet is available/ready in F2 TX FIFO\n")); + sd_trace(("Packet length = %d\n", sd->dwordmode ? + ((dstatus & STATUS_F2_PKT_LEN_MASK) >> (STATUS_F2_PKT_LEN_SHIFT - 2)) : + ((dstatus & STATUS_F2_PKT_LEN_MASK) >> STATUS_F2_PKT_LEN_SHIFT))); + } + + if (dstatus & STATUS_F3_PKT_AVAILABLE) { + spierrstats->f3pktavailable++; + sd_err(("Packet is available/ready in F3 TX FIFO\n")); + sd_err(("Packet length = %d\n", + (dstatus & STATUS_F3_PKT_LEN_MASK) >> STATUS_F3_PKT_LEN_SHIFT)); + } + + return err; +} + +extern int +sdioh_abort(sdioh_info_t *sd, uint func) +{ + return 0; +} + +int +sdioh_start(sdioh_info_t *sd, int stage) +{ + return SUCCESS; +} + +int +sdioh_stop(sdioh_info_t *sd) +{ + return SUCCESS; +} + + + +/* + * Private/Static work routines + */ +static int +bcmspi_host_init(sdioh_info_t *sd) +{ + + /* Default power on mode */ + sd->sd_mode = SDIOH_MODE_SPI; + sd->polled_mode = TRUE; + sd->host_init_done = TRUE; + sd->card_init_done = FALSE; + sd->adapter_slot = 1; + + return (SUCCESS); +} + +static int +get_client_blocksize(sdioh_info_t *sd) +{ + uint32 regdata[2]; + int status; + + /* Find F1/F2/F3 max packet size */ + if ((status = bcmspi_card_regread(sd, 0, SPID_F1_INFO_REG, + 8, regdata)) != SUCCESS) { + return status; + } + + sd_trace(("pkt_size regdata[0] = 0x%x, regdata[1] = 0x%x\n", + regdata[0], regdata[1])); + + sd->client_block_size[1] = (regdata[0] & F1_MAX_PKT_SIZE) >> 2; + sd_trace(("Func1 blocksize = %d\n", sd->client_block_size[1])); + ASSERT(sd->client_block_size[1] == BLOCK_SIZE_F1); + + sd->client_block_size[2] = ((regdata[0] >> 16) & F2_MAX_PKT_SIZE) >> 2; + sd_trace(("Func2 blocksize = %d\n", sd->client_block_size[2])); + ASSERT(sd->client_block_size[2] == BLOCK_SIZE_F2); + + sd->client_block_size[3] = (regdata[1] & F3_MAX_PKT_SIZE) >> 2; + sd_trace(("Func3 blocksize = %d\n", sd->client_block_size[3])); + ASSERT(sd->client_block_size[3] == BLOCK_SIZE_F3); + + return 0; +} + +static int +bcmspi_client_init(sdioh_info_t *sd) +{ + uint32 status_en_reg = 0; + sd_trace(("%s: Powering up slot %d\n", __FUNCTION__, sd->adapter_slot)); + +#ifdef HSMODE + if (!spi_start_clock(sd, (uint16)sd_divisor)) { + sd_err(("spi_start_clock failed\n")); + return ERROR; + } +#else + /* Start at ~400KHz clock rate for initialization */ + if (!spi_start_clock(sd, 128)) { + sd_err(("spi_start_clock failed\n")); + return ERROR; + } +#endif /* HSMODE */ + + if (!bcmspi_host_device_init_adapt(sd)) { + sd_err(("bcmspi_host_device_init_adapt failed\n")); + return ERROR; + } + + if (!bcmspi_test_card(sd)) { + sd_err(("bcmspi_test_card failed\n")); + return ERROR; + } + + sd->num_funcs = SPI_MAX_IOFUNCS; + + get_client_blocksize(sd); + + /* Apply resync pattern cmd with all zeros to reset spi-bkplane F1 logic */ + bcmspi_resync_f1(sd); + + sd->dwordmode = FALSE; + + bcmspi_card_regread(sd, 0, SPID_STATUS_ENABLE, 1, &status_en_reg); + + sd_trace(("%s: Enabling interrupt with dstatus \n", __FUNCTION__)); + status_en_reg |= INTR_WITH_STATUS; + + + if (bcmspi_card_regwrite(sd, SPI_FUNC_0, SPID_STATUS_ENABLE, 1, + status_en_reg & 0xff) != SUCCESS) { + sd_err(("%s: Unable to set response delay for all fun's.\n", __FUNCTION__)); + return ERROR; + } + + +#ifndef HSMODE + /* After configuring for High-Speed mode, set the desired clock rate. */ + if (!spi_start_clock(sd, 4)) { + sd_err(("spi_start_clock failed\n")); + return ERROR; + } +#endif /* HSMODE */ + + sd->card_init_done = TRUE; + + + return SUCCESS; +} + +static int +bcmspi_set_highspeed_mode(sdioh_info_t *sd, bool hsmode) +{ + uint32 regdata; + int status; + + if ((status = bcmspi_card_regread(sd, 0, SPID_CONFIG, + 4, ®data)) != SUCCESS) + return status; + + sd_trace(("In %s spih-ctrl = 0x%x \n", __FUNCTION__, regdata)); + + + if (hsmode == TRUE) { + sd_trace(("Attempting to enable High-Speed mode.\n")); + + if (regdata & HIGH_SPEED_MODE) { + sd_trace(("Device is already in High-Speed mode.\n")); + return status; + } else { + regdata |= HIGH_SPEED_MODE; + sd_trace(("Writing %08x to device at %08x\n", regdata, SPID_CONFIG)); + if ((status = bcmspi_card_regwrite(sd, 0, SPID_CONFIG, + 4, regdata)) != SUCCESS) { + return status; + } + } + } else { + sd_trace(("Attempting to disable High-Speed mode.\n")); + + if (regdata & HIGH_SPEED_MODE) { + regdata &= ~HIGH_SPEED_MODE; + sd_trace(("Writing %08x to device at %08x\n", regdata, SPID_CONFIG)); + if ((status = bcmspi_card_regwrite(sd, 0, SPID_CONFIG, + 4, regdata)) != SUCCESS) + return status; + } + else { + sd_trace(("Device is already in Low-Speed mode.\n")); + return status; + } + } + + spi_controller_highspeed_mode(sd, hsmode); + + return TRUE; +} + +#define bcmspi_find_curr_mode(sd) { \ + sd->wordlen = 2; \ + status = bcmspi_card_regread_fixedaddr(sd, 0, SPID_TEST_READ, 4, ®data); \ + regdata &= 0xff; \ + if ((regdata == 0xad) || (regdata == 0x5b) || \ + (regdata == 0x5d) || (regdata == 0x5a)) \ + break; \ + sd->wordlen = 4; \ + status = bcmspi_card_regread_fixedaddr(sd, 0, SPID_TEST_READ, 4, ®data); \ + regdata &= 0xff; \ + if ((regdata == 0xad) || (regdata == 0x5b) || \ + (regdata == 0x5d) || (regdata == 0x5a)) \ + break; \ + sd_trace(("Silicon testability issue: regdata = 0x%x." \ + " Expected 0xad, 0x5a, 0x5b or 0x5d.\n", regdata)); \ + OSL_DELAY(100000); \ +} + +#define INIT_ADAPT_LOOP 100 + +/* Adapt clock-phase-speed-bitwidth between host and device */ +static bool +bcmspi_host_device_init_adapt(sdioh_info_t *sd) +{ + uint32 wrregdata, regdata = 0; + int status; + int i; + + /* Due to a silicon testability issue, the first command from the Host + * to the device will get corrupted (first bit will be lost). So the + * Host should poll the device with a safe read request. ie: The Host + * should try to read F0 addr 0x14 using the Fixed address mode + * (This will prevent a unintended write command to be detected by device) + */ + for (i = 0; i < INIT_ADAPT_LOOP; i++) { + /* If device was not power-cycled it will stay in 32bit mode with + * response-delay-all bit set. Alternate the iteration so that + * read either with or without response-delay for F0 to succeed. + */ + bcmspi_find_curr_mode(sd); + sd->resp_delay_all = (i & 0x1) ? TRUE : FALSE; + + bcmspi_find_curr_mode(sd); + sd->dwordmode = TRUE; + + bcmspi_find_curr_mode(sd); + sd->dwordmode = FALSE; + } + + /* Bail out, device not detected */ + if (i == INIT_ADAPT_LOOP) + return FALSE; + + /* Softreset the spid logic */ + if ((sd->dwordmode) || (sd->wordlen == 4)) { + bcmspi_card_regwrite(sd, 0, SPID_RESET_BP, 1, RESET_ON_WLAN_BP_RESET|RESET_SPI); + bcmspi_card_regread(sd, 0, SPID_RESET_BP, 1, ®data); + sd_trace(("reset reg read = 0x%x\n", regdata)); + sd_trace(("dwordmode = %d, wordlen = %d, resp_delay_all = %d\n", sd->dwordmode, + sd->wordlen, sd->resp_delay_all)); + /* Restore default state after softreset */ + sd->wordlen = 2; + sd->dwordmode = FALSE; + } + + if (sd->wordlen == 4) { + if ((status = bcmspi_card_regread(sd, 0, SPID_TEST_READ, 4, ®data)) != + SUCCESS) + return FALSE; + if (regdata == TEST_RO_DATA_32BIT_LE) { + sd_trace(("Spid is already in 32bit LE mode. Value read = 0x%x\n", + regdata)); + sd_trace(("Spid power was left on.\n")); + } else { + sd_err(("Spid power was left on but signature read failed." + " Value read = 0x%x\n", regdata)); + return FALSE; + } + } else { + sd->wordlen = 2; + +#define CTRL_REG_DEFAULT 0x00010430 /* according to the host m/c */ + + wrregdata = (CTRL_REG_DEFAULT); + sd->resp_delay_all = TRUE; + if (sd->resp_delay_all == TRUE) { + /* Enable response delay for all */ + wrregdata |= (RESP_DELAY_ALL << 16); + /* Program response delay value */ + wrregdata &= 0xffff00ff; + wrregdata |= (F1_RESPONSE_DELAY << 8); + sd->prev_fun = SPI_FUNC_1; + bcmspi_card_regwrite(sd, 0, SPID_CONFIG, 4, wrregdata); + } + + if ((status = bcmspi_card_regread(sd, 0, SPID_TEST_READ, 4, ®data)) != SUCCESS) + return FALSE; + sd_trace(("(we are still in 16bit mode) 32bit READ LE regdata = 0x%x\n", regdata)); + +#ifndef HSMODE + wrregdata |= (CLOCK_PHASE | CLOCK_POLARITY); + wrregdata &= ~HIGH_SPEED_MODE; + bcmspi_card_regwrite(sd, 0, SPID_CONFIG, 4, wrregdata); +#endif /* HSMODE */ + + for (i = 0; i < INIT_ADAPT_LOOP; i++) { + if ((regdata == 0xfdda7d5b) || (regdata == 0xfdda7d5a)) { + sd_trace(("0xfeedbead was leftshifted by 1-bit.\n")); + if ((status = bcmspi_card_regread(sd, 0, SPID_TEST_READ, 4, + ®data)) != SUCCESS) + return FALSE; + } + OSL_DELAY(1000); + } + + + /* Change to host controller intr-polarity of active-low */ + wrregdata &= ~INTR_POLARITY; + sd_trace(("(we are still in 16bit mode) 32bit Write LE reg-ctrl-data = 0x%x\n", + wrregdata)); + /* Change to 32bit mode */ + wrregdata |= WORD_LENGTH_32; + bcmspi_card_regwrite(sd, 0, SPID_CONFIG, 4, wrregdata); + + /* Change command/data packaging in 32bit LE mode */ + sd->wordlen = 4; + + if ((status = bcmspi_card_regread(sd, 0, SPID_TEST_READ, 4, ®data)) != SUCCESS) + return FALSE; + + if (regdata == TEST_RO_DATA_32BIT_LE) { + sd_trace(("Read spid passed. Value read = 0x%x\n", regdata)); + sd_trace(("Spid had power-on cycle OR spi was soft-resetted \n")); + } else { + sd_err(("Stale spid reg values read as it was kept powered. Value read =" + "0x%x\n", regdata)); + return FALSE; + } + } + + + return TRUE; +} + +static bool +bcmspi_test_card(sdioh_info_t *sd) +{ + uint32 regdata; + int status; + + if ((status = bcmspi_card_regread(sd, 0, SPID_TEST_READ, 4, ®data)) != SUCCESS) + return FALSE; + + if (regdata == (TEST_RO_DATA_32BIT_LE)) + sd_trace(("32bit LE regdata = 0x%x\n", regdata)); + else { + sd_trace(("Incorrect 32bit LE regdata = 0x%x\n", regdata)); + return FALSE; + } + + +#define RW_PATTERN1 0xA0A1A2A3 +#define RW_PATTERN2 0x4B5B6B7B + + regdata = RW_PATTERN1; + if ((status = bcmspi_card_regwrite(sd, 0, SPID_TEST_RW, 4, regdata)) != SUCCESS) + return FALSE; + regdata = 0; + if ((status = bcmspi_card_regread(sd, 0, SPID_TEST_RW, 4, ®data)) != SUCCESS) + return FALSE; + if (regdata != RW_PATTERN1) { + sd_err(("Write-Read spid failed. Value wrote = 0x%x, Value read = 0x%x\n", + RW_PATTERN1, regdata)); + return FALSE; + } else + sd_trace(("R/W spid passed. Value read = 0x%x\n", regdata)); + + regdata = RW_PATTERN2; + if ((status = bcmspi_card_regwrite(sd, 0, SPID_TEST_RW, 4, regdata)) != SUCCESS) + return FALSE; + regdata = 0; + if ((status = bcmspi_card_regread(sd, 0, SPID_TEST_RW, 4, ®data)) != SUCCESS) + return FALSE; + if (regdata != RW_PATTERN2) { + sd_err(("Write-Read spid failed. Value wrote = 0x%x, Value read = 0x%x\n", + RW_PATTERN2, regdata)); + return FALSE; + } else + sd_trace(("R/W spid passed. Value read = 0x%x\n", regdata)); + + return TRUE; +} + +static int +bcmspi_driver_init(sdioh_info_t *sd) +{ + sd_trace(("%s\n", __FUNCTION__)); + if ((bcmspi_host_init(sd)) != SUCCESS) { + return ERROR; + } + + if (bcmspi_client_init(sd) != SUCCESS) { + return ERROR; + } + + return SUCCESS; +} + +/* Read device reg */ +static int +bcmspi_card_regread(sdioh_info_t *sd, int func, uint32 regaddr, int regsize, uint32 *data) +{ + int status; + uint32 cmd_arg, dstatus; + + ASSERT(regsize); + + if (func == 2) + sd_trace(("Reg access on F2 will generate error indication in dstatus bits.\n")); + + cmd_arg = 0; + cmd_arg = SFIELD(cmd_arg, SPI_RW_FLAG, 0); + cmd_arg = SFIELD(cmd_arg, SPI_ACCESS, 1); /* Incremental access */ + cmd_arg = SFIELD(cmd_arg, SPI_FUNCTION, func); + cmd_arg = SFIELD(cmd_arg, SPI_REG_ADDR, regaddr); + cmd_arg = SFIELD(cmd_arg, SPI_LEN, regsize == BLOCK_SIZE_F2 ? 0 : regsize); + + sd_trace(("%s cmd_arg = 0x%x\n", __FUNCTION__, cmd_arg)); + sd_trace(("%s: rw=%d, func=%d, regaddr=0x%08x, data=0x%x\n", __FUNCTION__, 0, func, + regaddr, *data)); + + if ((status = bcmspi_cmd_issue(sd, sd->sd_use_dma, cmd_arg, data, regsize)) + != SUCCESS) + return status; + + bcmspi_cmd_getdstatus(sd, &dstatus); + if (dstatus) + sd_trace(("dstatus =0x%x\n", dstatus)); + + return SUCCESS; +} + +static int +bcmspi_card_regread_fixedaddr(sdioh_info_t *sd, int func, uint32 regaddr, int regsize, uint32 *data) +{ + + int status; + uint32 cmd_arg; + uint32 dstatus; + + ASSERT(regsize); + + if (func == 2) + sd_trace(("Reg access on F2 will generate error indication in dstatus bits.\n")); + + cmd_arg = 0; + cmd_arg = SFIELD(cmd_arg, SPI_RW_FLAG, 0); + cmd_arg = SFIELD(cmd_arg, SPI_ACCESS, 0); /* Fixed access */ + cmd_arg = SFIELD(cmd_arg, SPI_FUNCTION, func); + cmd_arg = SFIELD(cmd_arg, SPI_REG_ADDR, regaddr); + cmd_arg = SFIELD(cmd_arg, SPI_LEN, regsize); + + sd_trace(("%s cmd_arg = 0x%x\n", __FUNCTION__, cmd_arg)); + + if ((status = bcmspi_cmd_issue(sd, sd->sd_use_dma, cmd_arg, data, regsize)) + != SUCCESS) + return status; + + sd_trace(("%s: rw=%d, func=%d, regaddr=0x%08x, data=0x%x\n", __FUNCTION__, 0, func, + regaddr, *data)); + + bcmspi_cmd_getdstatus(sd, &dstatus); + sd_trace(("dstatus =0x%x\n", dstatus)); + return SUCCESS; +} + +/* write a device register */ +static int +bcmspi_card_regwrite(sdioh_info_t *sd, int func, uint32 regaddr, int regsize, uint32 data) +{ + int status; + uint32 cmd_arg, dstatus; + + ASSERT(regsize); + + cmd_arg = 0; + + cmd_arg = SFIELD(cmd_arg, SPI_RW_FLAG, 1); + cmd_arg = SFIELD(cmd_arg, SPI_ACCESS, 1); /* Incremental access */ + cmd_arg = SFIELD(cmd_arg, SPI_FUNCTION, func); + cmd_arg = SFIELD(cmd_arg, SPI_REG_ADDR, regaddr); + cmd_arg = SFIELD(cmd_arg, SPI_LEN, regsize == BLOCK_SIZE_F2 ? 0 : regsize); + + sd_trace(("%s cmd_arg = 0x%x\n", __FUNCTION__, cmd_arg)); + sd_trace(("%s: rw=%d, func=%d, regaddr=0x%08x, data=0x%x\n", __FUNCTION__, 1, func, + regaddr, data)); + + + if ((status = bcmspi_cmd_issue(sd, sd->sd_use_dma, cmd_arg, &data, regsize)) + != SUCCESS) + return status; + + bcmspi_cmd_getdstatus(sd, &dstatus); + if (dstatus) + sd_trace(("dstatus =0x%x\n", dstatus)); + + return SUCCESS; +} + +/* write a device register - 1 byte */ +static int +bcmspi_card_bytewrite(sdioh_info_t *sd, int func, uint32 regaddr, uint8 *byte) +{ + int status; + uint32 cmd_arg; + uint32 dstatus; + uint32 data = (uint32)(*byte); + + cmd_arg = 0; + cmd_arg = SFIELD(cmd_arg, SPI_FUNCTION, func); + cmd_arg = SFIELD(cmd_arg, SPI_ACCESS, 1); /* Incremental access */ + cmd_arg = SFIELD(cmd_arg, SPI_REG_ADDR, regaddr); + cmd_arg = SFIELD(cmd_arg, SPI_RW_FLAG, 1); + cmd_arg = SFIELD(cmd_arg, SPI_LEN, 1); + + sd_trace(("%s cmd_arg = 0x%x\n", __FUNCTION__, cmd_arg)); + sd_trace(("%s: func=%d, regaddr=0x%08x, data=0x%x\n", __FUNCTION__, func, + regaddr, data)); + + if ((status = bcmspi_cmd_issue(sd, sd->sd_use_dma, + cmd_arg, &data, 1)) != SUCCESS) { + return status; + } + + bcmspi_cmd_getdstatus(sd, &dstatus); + if (dstatus) + sd_trace(("dstatus =0x%x\n", dstatus)); + + return SUCCESS; +} + +void +bcmspi_cmd_getdstatus(sdioh_info_t *sd, uint32 *dstatus_buffer) +{ + *dstatus_buffer = sd->card_dstatus; +} + +/* 'data' is of type uint32 whereas other buffers are of type uint8 */ +static int +bcmspi_cmd_issue(sdioh_info_t *sd, bool use_dma, uint32 cmd_arg, + uint32 *data, uint32 datalen) +{ + uint32 i, j; + uint8 resp_delay = 0; + int err = SUCCESS; + uint32 hostlen; + uint32 spilen = 0; + uint32 dstatus_idx = 0; + uint16 templen, buslen, len, *ptr = NULL; + + sd_trace(("spi cmd = 0x%x\n", cmd_arg)); + + if (DWORDMODE_ON) { + spilen = GFIELD(cmd_arg, SPI_LEN); + if ((GFIELD(cmd_arg, SPI_FUNCTION) == SPI_FUNC_0) || + (GFIELD(cmd_arg, SPI_FUNCTION) == SPI_FUNC_1)) + dstatus_idx = spilen * 3; + + if ((GFIELD(cmd_arg, SPI_FUNCTION) == SPI_FUNC_2) && + (GFIELD(cmd_arg, SPI_RW_FLAG) == 1)) { + spilen = spilen << 2; + dstatus_idx = (spilen % 16) ? (16 - (spilen % 16)) : 0; + /* convert len to mod16 size */ + spilen = ROUNDUP(spilen, 16); + cmd_arg = SFIELD(cmd_arg, SPI_LEN, (spilen >> 2)); + } + } + + /* Set up and issue the SPI command. MSByte goes out on bus first. Increase datalen + * according to the wordlen mode(16/32bit) the device is in. + */ + if (sd->wordlen == 4) { /* 32bit spid */ + *(uint32 *)spi_outbuf = bcmswap32(cmd_arg); + if (datalen & 0x3) + datalen += (4 - (datalen & 0x3)); + } else if (sd->wordlen == 2) { /* 16bit spid */ + *(uint16 *)spi_outbuf = bcmswap16(cmd_arg & 0xffff); + *(uint16 *)&spi_outbuf[2] = bcmswap16((cmd_arg & 0xffff0000) >> 16); + if (datalen & 0x1) + datalen++; + if (datalen < 4) + datalen = ROUNDUP(datalen, 4); + } else { + sd_err(("Host is %d bit spid, could not create SPI command.\n", + 8 * sd->wordlen)); + return ERROR; + } + + /* for Write, put the data into the output buffer */ + if (GFIELD(cmd_arg, SPI_RW_FLAG) == 1) { + /* We send len field of hw-header always a mod16 size, both from host and dongle */ + if (DWORDMODE_ON) { + if (GFIELD(cmd_arg, SPI_FUNCTION) == SPI_FUNC_2) { + ptr = (uint16 *)&data[0]; + templen = *ptr; + /* ASSERT(*ptr == ~*(ptr + 1)); */ + templen = ROUNDUP(templen, 16); + *ptr = templen; + sd_trace(("actual tx len = %d\n", (uint16)(~*(ptr+1)))); + } + } + + if (datalen != 0) { + for (i = 0; i < datalen/4; i++) { + if (sd->wordlen == 4) { /* 32bit spid */ + *(uint32 *)&spi_outbuf[i * 4 + CMDLEN] = + bcmswap32(data[i]); + } else if (sd->wordlen == 2) { /* 16bit spid */ + *(uint16 *)&spi_outbuf[i * 4 + CMDLEN] = + bcmswap16(data[i] & 0xffff); + *(uint16 *)&spi_outbuf[i * 4 + CMDLEN + 2] = + bcmswap16((data[i] & 0xffff0000) >> 16); + } + } + } + } + + /* Append resp-delay number of bytes and clock them out for F0/1/2 reads. */ + if (GFIELD(cmd_arg, SPI_RW_FLAG) == 0) { + int func = GFIELD(cmd_arg, SPI_FUNCTION); + switch (func) { + case 0: + resp_delay = sd->resp_delay_all ? F0_RESPONSE_DELAY : 0; + break; + case 1: + resp_delay = F1_RESPONSE_DELAY; + break; + case 2: + resp_delay = sd->resp_delay_all ? F2_RESPONSE_DELAY : 0; + break; + default: + ASSERT(0); + break; + } + /* Program response delay */ + bcmspi_prog_resp_delay(sd, func, resp_delay); + } + + /* +4 for cmd and +4 for dstatus */ + hostlen = datalen + 8 + resp_delay; + hostlen += dstatus_idx; + hostlen += (4 - (hostlen & 0x3)); + spi_sendrecv(sd, spi_outbuf, spi_inbuf, hostlen); + + /* for Read, get the data into the input buffer */ + if (datalen != 0) { + if (GFIELD(cmd_arg, SPI_RW_FLAG) == 0) { /* if read cmd */ + for (j = 0; j < datalen/4; j++) { + if (sd->wordlen == 4) { /* 32bit spid */ + data[j] = bcmswap32(*(uint32 *)&spi_inbuf[j * 4 + + CMDLEN + resp_delay]); + } else if (sd->wordlen == 2) { /* 16bit spid */ + data[j] = (bcmswap16(*(uint16 *)&spi_inbuf[j * 4 + + CMDLEN + resp_delay])) | + ((bcmswap16(*(uint16 *)&spi_inbuf[j * 4 + + CMDLEN + resp_delay + 2])) << 16); + } + } + + if ((DWORDMODE_ON) && (GFIELD(cmd_arg, SPI_FUNCTION) == SPI_FUNC_2)) { + ptr = (uint16 *)&data[0]; + templen = *ptr; + buslen = len = ~(*(ptr + 1)); + buslen = ROUNDUP(buslen, 16); + /* populate actual len in hw-header */ + if (templen == buslen) + *ptr = len; + } + } + } + + /* Restore back the len field of the hw header */ + if (DWORDMODE_ON) { + if ((GFIELD(cmd_arg, SPI_FUNCTION) == SPI_FUNC_2) && + (GFIELD(cmd_arg, SPI_RW_FLAG) == 1)) { + ptr = (uint16 *)&data[0]; + *ptr = (uint16)(~*(ptr+1)); + } + } + + dstatus_idx += (datalen + CMDLEN + resp_delay); + /* Last 4bytes are dstatus. Device is configured to return status bits. */ + if (sd->wordlen == 4) { /* 32bit spid */ + sd->card_dstatus = bcmswap32(*(uint32 *)&spi_inbuf[dstatus_idx]); + } else if (sd->wordlen == 2) { /* 16bit spid */ + sd->card_dstatus = (bcmswap16(*(uint16 *)&spi_inbuf[dstatus_idx]) | + (bcmswap16(*(uint16 *)&spi_inbuf[dstatus_idx + 2]) << 16)); + } else { + sd_err(("Host is %d bit machine, could not read SPI dstatus.\n", + 8 * sd->wordlen)); + return ERROR; + } + if (sd->card_dstatus == 0xffffffff) { + sd_err(("looks like not a GSPI device or device is not powered.\n")); + } + + err = bcmspi_update_stats(sd, cmd_arg); + + return err; + +} + +static int +bcmspi_card_buf(sdioh_info_t *sd, int rw, int func, bool fifo, + uint32 addr, int nbytes, uint32 *data) +{ + int status; + uint32 cmd_arg; + bool write = rw == SDIOH_READ ? 0 : 1; + uint retries = 0; + + bool enable; + uint32 spilen; + + cmd_arg = 0; + + ASSERT(nbytes); + ASSERT(nbytes <= sd->client_block_size[func]); + + if (write) sd->t_cnt++; else sd->r_cnt++; + + if (func == 2) { + /* Frame len check limited by gSPI. */ + if ((nbytes > 2000) && write) { + sd_trace((">2KB write: F2 wr of %d bytes\n", nbytes)); + } + /* ASSERT(nbytes <= 2048); Fix bigger len gspi issue and uncomment. */ + /* If F2 fifo on device is not ready to receive data, don't do F2 transfer */ + if (write) { + uint32 dstatus; + /* check F2 ready with cached one */ + bcmspi_cmd_getdstatus(sd, &dstatus); + if ((dstatus & STATUS_F2_RX_READY) == 0) { + retries = WAIT_F2RXFIFORDY; + enable = 0; + while (retries-- && !enable) { + OSL_DELAY(WAIT_F2RXFIFORDY_DELAY * 1000); + bcmspi_card_regread(sd, SPI_FUNC_0, SPID_STATUS_REG, 4, + &dstatus); + if (dstatus & STATUS_F2_RX_READY) + enable = TRUE; + } + if (!enable) { + struct spierrstats_t *spierrstats = &sd->spierrstats; + spierrstats->f2rxnotready++; + sd_err(("F2 FIFO is not ready to receive data.\n")); + return ERROR; + } + sd_trace(("No of retries on F2 ready %d\n", + (WAIT_F2RXFIFORDY - retries))); + } + } + } + + /* F2 transfers happen on 0 addr */ + addr = (func == 2) ? 0 : addr; + + /* In pio mode buffer is read using fixed address fifo in func 1 */ + if ((func == 1) && (fifo)) + cmd_arg = SFIELD(cmd_arg, SPI_ACCESS, 0); + else + cmd_arg = SFIELD(cmd_arg, SPI_ACCESS, 1); + + cmd_arg = SFIELD(cmd_arg, SPI_FUNCTION, func); + cmd_arg = SFIELD(cmd_arg, SPI_REG_ADDR, addr); + cmd_arg = SFIELD(cmd_arg, SPI_RW_FLAG, write); + spilen = sd->data_xfer_count = MIN(sd->client_block_size[func], nbytes); + if ((sd->dwordmode == TRUE) && (GFIELD(cmd_arg, SPI_FUNCTION) == SPI_FUNC_2)) { + /* convert len to mod4 size */ + spilen = spilen + ((spilen & 0x3) ? (4 - (spilen & 0x3)): 0); + cmd_arg = SFIELD(cmd_arg, SPI_LEN, (spilen >> 2)); + } else + cmd_arg = SFIELD(cmd_arg, SPI_LEN, spilen); + + if ((func == 2) && (fifo == 1)) { + sd_data(("%s: %s func %d, %s, addr 0x%x, len %d bytes, r_cnt %d t_cnt %d\n", + __FUNCTION__, write ? "Wr" : "Rd", func, "INCR", + addr, nbytes, sd->r_cnt, sd->t_cnt)); + } + + sd_trace(("%s cmd_arg = 0x%x\n", __FUNCTION__, cmd_arg)); + sd_data(("%s: %s func %d, %s, addr 0x%x, len %d bytes, r_cnt %d t_cnt %d\n", + __FUNCTION__, write ? "Wd" : "Rd", func, "INCR", + addr, nbytes, sd->r_cnt, sd->t_cnt)); + + + if ((status = bcmspi_cmd_issue(sd, sd->sd_use_dma, cmd_arg, + data, nbytes)) != SUCCESS) { + sd_err(("%s: cmd_issue failed for %s\n", __FUNCTION__, + (write ? "write" : "read"))); + return status; + } + + /* gSPI expects that hw-header-len is equal to spi-command-len */ + if ((func == 2) && (rw == SDIOH_WRITE) && (sd->dwordmode == FALSE)) { + ASSERT((uint16)sd->data_xfer_count == (uint16)(*data & 0xffff)); + ASSERT((uint16)sd->data_xfer_count == (uint16)(~((*data & 0xffff0000) >> 16))); + } + + if ((nbytes > 2000) && !write) { + sd_trace((">2KB read: F2 rd of %d bytes\n", nbytes)); + } + + return SUCCESS; +} + +/* Reset and re-initialize the device */ +int +sdioh_sdio_reset(sdioh_info_t *si) +{ + si->card_init_done = FALSE; + return bcmspi_client_init(si); +} |