summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/bcm4329/bcmsdspi.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/bcm4329/bcmsdspi.c')
-rw-r--r--drivers/net/wireless/bcm4329/bcmsdspi.c1596
1 files changed, 1596 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcm4329/bcmsdspi.c b/drivers/net/wireless/bcm4329/bcmsdspi.c
new file mode 100644
index 000000000000..636539be5ea5
--- /dev/null
+++ b/drivers/net/wireless/bcm4329/bcmsdspi.c
@@ -0,0 +1,1596 @@
+/*
+ * Broadcom BCMSDH to SPI Protocol Conversion Layer
+ *
+ * Copyright (C) 1999-2010, Broadcom Corporation
+ *
+ * Unless you and Broadcom execute a separate written software license
+ * agreement governing use of this software, this software is licensed to you
+ * under the terms of the GNU General Public License version 2 (the "GPL"),
+ * available at http://www.broadcom.com/licenses/GPLv2.php, with the
+ * following added to such license:
+ *
+ * As a special exception, the copyright holders of this software give you
+ * permission to link this software with independent modules, and to copy and
+ * distribute the resulting executable under terms of your choice, provided that
+ * you also meet, for each linked independent module, the terms and conditions of
+ * the license of that module. An independent module is a module which is not
+ * derived from this software. The special exception does not apply to any
+ * modifications of the software.
+ *
+ * Notwithstanding the above, under no circumstances may you combine this
+ * software in any way with any other Broadcom software provided under a license
+ * other than the GPL, without Broadcom's express prior written consent.
+ *
+ * $Id: bcmsdspi.c,v 1.14.4.2.4.4.6.5 2010/03/10 03:09:48 Exp $
+ */
+
+#include <typedefs.h>
+
+#include <bcmdevs.h>
+#include <bcmendian.h>
+#include <bcmutils.h>
+#include <osl.h>
+#include <siutils.h>
+#include <sdio.h> /* SDIO Device and Protocol Specs */
+#include <sdioh.h> /* SDIO Host Controller Specification */
+#include <bcmsdbus.h> /* bcmsdh to/from specific controller APIs */
+#include <sdiovar.h> /* ioctl/iovars */
+
+#include <pcicfg.h>
+
+
+#include <bcmsdspi.h>
+#include <bcmspi.h>
+
+#include <proto/sdspi.h>
+
+#define SD_PAGE 4096
+
+/* Globals */
+
+uint sd_msglevel = SDH_ERROR_VAL;
+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 = 512; /* Default blocksize */
+
+uint sd_divisor = 2; /* Default 33MHz/2 = 16MHz for dongle */
+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 */
+uint sd_pci_slot = 0xFFFFffff; /* Used to force selection of a particular PCI slot */
+
+uint sd_toctl = 7;
+
+/* Prototypes */
+static bool sdspi_start_power(sdioh_info_t *sd);
+static int sdspi_set_highspeed_mode(sdioh_info_t *sd, bool HSMode);
+static int sdspi_card_enablefuncs(sdioh_info_t *sd);
+static void sdspi_cmd_getrsp(sdioh_info_t *sd, uint32 *rsp_buffer, int count);
+static int sdspi_cmd_issue(sdioh_info_t *sd, bool use_dma, uint32 cmd, uint32 arg,
+ uint32 *data, uint32 datalen);
+static int sdspi_card_regread(sdioh_info_t *sd, int func, uint32 regaddr,
+ int regsize, uint32 *data);
+static int sdspi_card_regwrite(sdioh_info_t *sd, int func, uint32 regaddr,
+ int regsize, uint32 data);
+static int sdspi_driver_init(sdioh_info_t *sd);
+static bool sdspi_reset(sdioh_info_t *sd, bool host_reset, bool client_reset);
+static int sdspi_card_buf(sdioh_info_t *sd, int rw, int func, bool fifo,
+ uint32 addr, int nbytes, uint32 *data);
+static int sdspi_abort(sdioh_info_t *sd, uint func);
+
+static int set_client_block_size(sdioh_info_t *sd, int func, int blocksize);
+
+static uint8 sdspi_crc7(unsigned char* p, uint32 len);
+static uint16 sdspi_crc16(unsigned char* p, uint32 len);
+static int sdspi_crc_onoff(sdioh_info_t *sd, bool use_crc);
+
+/*
+ * 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(("sdioh_attach: out of memory, malloced %d bytes\n", 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 = (uintptr)bar0;
+ sd->irq = irq;
+ sd->intr_handler = NULL;
+ sd->intr_handler_arg = NULL;
+ sd->intr_handler_valid = FALSE;
+
+ /* Set defaults */
+ sd->sd_blockmode = FALSE;
+ sd->use_client_ints = TRUE;
+ sd->sd_use_dma = FALSE; /* DMA Not supported */
+
+ /* Haven't figured out how to make bytemode work with dma */
+ if (!sd->sd_blockmode)
+ sd->sd_use_dma = 0;
+
+ 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 (sdspi_driver_init(sd) != SUCCESS) {
+ if (sdspi_driver_init(sd) != SUCCESS) {
+ sd_err(("%s:sdspi_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) {
+ if (sd->card_init_done)
+ sdspi_reset(sd, 1, 1);
+
+ sd_info(("%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
+
+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_CRC
+};
+
+const bcm_iovar_t sdioh_iovars[] = {
+ {"sd_msglevel", IOV_MSGLEVEL, 0, IOVT_UINT32, 0 },
+ {"sd_blockmode", IOV_BLOCKMODE, 0, IOVT_BOOL, 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_crc", IOV_CRC, 0, IOVT_UINT32, 0 },
+ {"sd_mode", IOV_SDMODE, 0, IOVT_UINT32, 100},
+ {"sd_highspeed", IOV_HISPEED, 0, IOVT_UINT32, 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;
+
+ 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_BLOCKMODE):
+ int_val = (int32)si->sd_blockmode;
+ bcopy(&int_val, arg, val_size);
+ break;
+
+ case IOV_SVAL(IOV_BLOCKMODE):
+ si->sd_blockmode = (bool)int_val;
+ /* Haven't figured out how to make non-block mode with DMA */
+ if (!si->sd_blockmode)
+ si->sd_use_dma = 0;
+ 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_SVAL(IOV_BLOCKSIZE):
+ {
+ uint func = ((uint32)int_val >> 16);
+ uint blksize = (uint16)int_val;
+ uint maxsize;
+
+ if (func > si->num_funcs) {
+ bcmerror = BCME_BADARG;
+ break;
+ }
+
+ switch (func) {
+ case 0: maxsize = 32; break;
+ case 1: maxsize = BLOCK_SIZE_4318; break;
+ case 2: maxsize = BLOCK_SIZE_4328; break;
+ default: maxsize = 0;
+ }
+ if (blksize > maxsize) {
+ bcmerror = BCME_BADARG;
+ break;
+ }
+ if (!blksize) {
+ blksize = maxsize;
+ }
+
+ /* Now set it */
+ spi_lock(si);
+ bcmerror = set_client_block_size(si, func, blksize);
+ spi_unlock(si);
+ 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(("set clock failed!\n"));
+ 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_CRC):
+ int_val = (uint32)sd_crc;
+ bcopy(&int_val, arg, val_size);
+ break;
+
+ case IOV_SVAL(IOV_CRC):
+ /* Apply new setting, but don't change sd_crc until
+ * after the CRC-mode is selected in the device. This
+ * is required because the software must generate a
+ * correct CRC for the CMD59 in order to be able to
+ * turn OFF the CRC.
+ */
+ sdspi_crc_onoff(si, int_val ? 1 : 0);
+ sd_crc = 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 (!sdspi_set_highspeed_mode(si, (bool)sd_hiok)) {
+ sd_err(("Failed changing highspeed mode to %d.\n", 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_HOSTREG):
+ {
+ break;
+ }
+
+ case IOV_SVAL(IOV_HOSTREG):
+ {
+ sd_err(("IOV_HOSTREG unsupported\n"));
+ 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;
+ }
+
+
+ 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;
+ 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 foo;
+ uint8 *cis = cisd;
+
+ sd_trace(("%s: Func = %d\n", __FUNCTION__, func));
+
+ if (!sd->func_cis_ptr[func]) {
+ bzero(cis, length);
+ return SDIOH_API_RC_FAIL;
+ }
+
+ spi_lock(sd);
+ *cis = 0;
+ for (count = 0; count < length; count++) {
+ offset = sd->func_cis_ptr[func] + count;
+ if (sdspi_card_regread (sd, 0, offset, 1, &foo) < 0) {
+ sd_err(("%s: regread failed: Can't read CIS\n", __FUNCTION__));
+ spi_unlock(sd);
+ return SDIOH_API_RC_FAIL;
+ }
+ *cis = (uint8)(foo & 0xff);
+ cis++;
+ }
+ spi_unlock(sd);
+ return SDIOH_API_RC_SUCCESS;
+}
+
+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 rsp5;
+
+ spi_lock(sd);
+
+ cmd_arg = 0;
+ cmd_arg = SFIELD(cmd_arg, CMD52_FUNCTION, func);
+ cmd_arg = SFIELD(cmd_arg, CMD52_REG_ADDR, regaddr);
+ cmd_arg = SFIELD(cmd_arg, CMD52_RW_FLAG, rw == SDIOH_READ ? 0 : 1);
+ cmd_arg = SFIELD(cmd_arg, CMD52_RAW, 0);
+ cmd_arg = SFIELD(cmd_arg, CMD52_DATA, rw == SDIOH_READ ? 0 : *byte);
+
+ sd_trace(("%s: rw=%d, func=%d, regaddr=0x%08x\n", __FUNCTION__, rw, func, regaddr));
+
+ if ((status = sdspi_cmd_issue(sd, sd->sd_use_dma,
+ SDIOH_CMD_52, cmd_arg, NULL, 0)) != SUCCESS) {
+ spi_unlock(sd);
+ return status;
+ }
+
+ sdspi_cmd_getrsp(sd, &rsp5, 1);
+ if (rsp5 != 0x00) {
+ sd_err(("%s: rsp5 flags is 0x%x func=%d\n",
+ __FUNCTION__, rsp5, func));
+ /* ASSERT(0); */
+ spi_unlock(sd);
+ return SDIOH_API_RC_FAIL;
+ }
+
+ if (rw == SDIOH_READ)
+ *byte = sd->card_rsp_data >> 24;
+
+ 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 = sdspi_card_regread(sd, func, addr, nbytes, word);
+ else
+ status = sdspi_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:
+ * Bytemode: 1 block at a time.
+ */
+ while (buflen > 0) {
+ if (sd->sd_blockmode) {
+ /* Max xfer is Page size */
+ len = MIN(SD_PAGE, buflen);
+
+ /* Round down to a block boundry */
+ if (buflen > sd->client_block_size[func])
+ len = (len/sd->client_block_size[func]) *
+ sd->client_block_size[func];
+ } else {
+ /* Byte mode: One block at a time */
+ len = MIN(sd->client_block_size[func], buflen);
+ }
+
+ if (sdspi_card_buf(sd, rw, func, fifo, addr, len, (uint32 *)buffer) != SUCCESS) {
+ spi_unlock(sd);
+ return SDIOH_API_RC_FAIL;
+ }
+ buffer += len;
+ buflen -= len;
+ if (!fifo)
+ addr += len;
+ }
+ spi_unlock(sd);
+ return SDIOH_API_RC_SUCCESS;
+}
+
+static int
+sdspi_abort(sdioh_info_t *sd, uint func)
+{
+ uint8 spi_databuf[] = { 0x74, 0x80, 0x00, 0x0C, 0xFF, 0x95, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+ uint8 spi_rspbuf[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+ int err = 0;
+
+ sd_err(("Sending SPI Abort to F%d\n", func));
+ spi_databuf[4] = func & 0x7;
+ /* write to function 0, addr 6 (IOABORT) func # in 3 LSBs. */
+ spi_sendrecv(sd, spi_databuf, spi_rspbuf, sizeof(spi_databuf));
+
+ return err;
+}
+
+extern int
+sdioh_abort(sdioh_info_t *sd, uint fnum)
+{
+ int ret;
+
+ spi_lock(sd);
+ ret = sdspi_abort(sd, fnum);
+ spi_unlock(sd);
+
+ return ret;
+}
+
+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 bool
+sdspi_reset(sdioh_info_t *sd, bool host_reset, bool client_reset)
+{
+ if (!sd)
+ return TRUE;
+
+ spi_lock(sd);
+ /* Reset client card */
+ if (client_reset && (sd->adapter_slot != -1)) {
+ if (sdspi_card_regwrite(sd, 0, SDIOD_CCCR_IOABORT, 1, 0x8) != SUCCESS)
+ sd_err(("%s: Cannot write to card reg 0x%x\n",
+ __FUNCTION__, SDIOD_CCCR_IOABORT));
+ else
+ sd->card_rca = 0;
+ }
+
+ /* The host reset is a NOP in the sd-spi case. */
+ if (host_reset) {
+ sd->sd_mode = SDIOH_MODE_SPI;
+ }
+ spi_unlock(sd);
+ return TRUE;
+}
+
+static int
+sdspi_host_init(sdioh_info_t *sd)
+{
+ sdspi_reset(sd, 1, 0);
+
+ /* Default power on mode is SD1 */
+ 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);
+}
+
+#define CMD0_RETRIES 3
+#define CMD5_RETRIES 10
+
+static int
+get_ocr(sdioh_info_t *sd, uint32 *cmd_arg, uint32 *cmd_rsp)
+{
+ uint32 rsp5;
+ int retries, status;
+
+ /* First issue a CMD0 to get the card into SPI mode. */
+ for (retries = 0; retries <= CMD0_RETRIES; retries++) {
+ if ((status = sdspi_cmd_issue(sd, sd->sd_use_dma,
+ SDIOH_CMD_0, *cmd_arg, NULL, 0)) != SUCCESS) {
+ sd_err(("%s: No response to CMD0\n", __FUNCTION__));
+ continue;
+ }
+
+ sdspi_cmd_getrsp(sd, &rsp5, 1);
+
+ if (GFIELD(rsp5, SPI_RSP_ILL_CMD)) {
+ printf("%s: Card already initialized (continuing)\n", __FUNCTION__);
+ break;
+ }
+
+ if (GFIELD(rsp5, SPI_RSP_IDLE)) {
+ printf("%s: Card in SPI mode\n", __FUNCTION__);
+ break;
+ }
+ }
+
+ if (retries > CMD0_RETRIES) {
+ sd_err(("%s: Too many retries for CMD0\n", __FUNCTION__));
+ return ERROR;
+ }
+
+ /* Get the Card's Operation Condition. */
+ /* Occasionally the board takes a while to become ready. */
+ for (retries = 0; retries <= CMD5_RETRIES; retries++) {
+ if ((status = sdspi_cmd_issue(sd, sd->sd_use_dma,
+ SDIOH_CMD_5, *cmd_arg, NULL, 0)) != SUCCESS) {
+ sd_err(("%s: No response to CMD5\n", __FUNCTION__));
+ continue;
+ }
+
+ printf("CMD5 response data was: 0x%08x\n", sd->card_rsp_data);
+
+ if (GFIELD(sd->card_rsp_data, RSP4_CARD_READY)) {
+ printf("%s: Card ready\n", __FUNCTION__);
+ break;
+ }
+ }
+
+ if (retries > CMD5_RETRIES) {
+ sd_err(("%s: Too many retries for CMD5\n", __FUNCTION__));
+ return ERROR;
+ }
+
+ *cmd_rsp = sd->card_rsp_data;
+
+ sdspi_crc_onoff(sd, sd_crc ? 1 : 0);
+
+ return (SUCCESS);
+}
+
+static int
+sdspi_crc_onoff(sdioh_info_t *sd, bool use_crc)
+{
+ uint32 args;
+ int status;
+
+ args = use_crc ? 1 : 0;
+ if ((status = sdspi_cmd_issue(sd, sd->sd_use_dma,
+ SDIOH_CMD_59, args, NULL, 0)) != SUCCESS) {
+ sd_err(("%s: No response to CMD59\n", __FUNCTION__));
+ }
+
+ sd_info(("CMD59 response data was: 0x%08x\n", sd->card_rsp_data));
+
+ sd_err(("SD-SPI CRC turned %s\n", use_crc ? "ON" : "OFF"));
+ return (SUCCESS);
+}
+
+static int
+sdspi_client_init(sdioh_info_t *sd)
+{
+ uint8 fn_ints;
+
+ sd_trace(("%s: Powering up slot %d\n", __FUNCTION__, sd->adapter_slot));
+
+ /* Start at ~400KHz clock rate for initialization */
+ if (!spi_start_clock(sd, 128)) {
+ sd_err(("spi_start_clock failed\n"));
+ return ERROR;
+ }
+
+ if (!sdspi_start_power(sd)) {
+ sd_err(("sdspi_start_power failed\n"));
+ return ERROR;
+ }
+
+ if (sd->num_funcs == 0) {
+ sd_err(("%s: No IO funcs!\n", __FUNCTION__));
+ return ERROR;
+ }
+
+ sdspi_card_enablefuncs(sd);
+
+ set_client_block_size(sd, 1, BLOCK_SIZE_4318);
+ fn_ints = INTR_CTL_FUNC1_EN;
+
+ if (sd->num_funcs >= 2) {
+ set_client_block_size(sd, 2, sd_f2_blocksize /* BLOCK_SIZE_4328 */);
+ fn_ints |= INTR_CTL_FUNC2_EN;
+ }
+
+ /* Enable/Disable Client interrupts */
+ /* Turn on here but disable at host controller */
+ if (sdspi_card_regwrite(sd, 0, SDIOD_CCCR_INTEN, 1,
+ (fn_ints | INTR_CTL_MASTER_EN)) != SUCCESS) {
+ sd_err(("%s: Could not enable ints in CCCR\n", __FUNCTION__));
+ return ERROR;
+ }
+
+ /* Switch to High-speed clocking mode if both host and device support it */
+ sdspi_set_highspeed_mode(sd, (bool)sd_hiok);
+
+ /* After configuring for High-Speed mode, set the desired clock rate. */
+ if (!spi_start_clock(sd, (uint16)sd_divisor)) {
+ sd_err(("spi_start_clock failed\n"));
+ return ERROR;
+ }
+
+ sd->card_init_done = TRUE;
+
+ return SUCCESS;
+}
+
+static int
+sdspi_set_highspeed_mode(sdioh_info_t *sd, bool HSMode)
+{
+ uint32 regdata;
+ int status;
+ bool hsmode;
+
+ if (HSMode == TRUE) {
+
+ sd_err(("Attempting to enable High-Speed mode.\n"));
+
+ if ((status = sdspi_card_regread(sd, 0, SDIOD_CCCR_SPEED_CONTROL,
+ 1, &regdata)) != SUCCESS) {
+ return status;
+ }
+ if (regdata & SDIO_SPEED_SHS) {
+ sd_err(("Device supports High-Speed mode.\n"));
+
+ regdata |= SDIO_SPEED_EHS;
+
+ sd_err(("Writing %08x to Card at %08x\n",
+ regdata, SDIOD_CCCR_SPEED_CONTROL));
+ if ((status = sdspi_card_regwrite(sd, 0, SDIOD_CCCR_SPEED_CONTROL,
+ 1, regdata)) != BCME_OK) {
+ return status;
+ }
+
+ hsmode = 1;
+
+ sd_err(("High-speed clocking mode enabled.\n"));
+ }
+ else {
+ sd_err(("Device does not support High-Speed Mode.\n"));
+ hsmode = 0;
+ }
+ } else {
+ if ((status = sdspi_card_regread(sd, 0, SDIOD_CCCR_SPEED_CONTROL,
+ 1, &regdata)) != SUCCESS) {
+ return status;
+ }
+
+ regdata = ~SDIO_SPEED_EHS;
+
+ sd_err(("Writing %08x to Card at %08x\n",
+ regdata, SDIOD_CCCR_SPEED_CONTROL));
+ if ((status = sdspi_card_regwrite(sd, 0, SDIOD_CCCR_SPEED_CONTROL,
+ 1, regdata)) != BCME_OK) {
+ return status;
+ }
+
+ sd_err(("Low-speed clocking mode enabled.\n"));
+ hsmode = 0;
+ }
+
+ spi_controller_highspeed_mode(sd, hsmode);
+
+ return TRUE;
+}
+
+bool
+sdspi_start_power(sdioh_info_t *sd)
+{
+ uint32 cmd_arg;
+ uint32 cmd_rsp;
+
+ sd_trace(("%s\n", __FUNCTION__));
+
+ /* Get the Card's Operation Condition. Occasionally the board
+ * takes a while to become ready
+ */
+
+ cmd_arg = 0;
+ if (get_ocr(sd, &cmd_arg, &cmd_rsp) != SUCCESS) {
+ sd_err(("%s: Failed to get OCR; bailing\n", __FUNCTION__));
+ return FALSE;
+ }
+
+ sd_err(("mem_present = %d\n", GFIELD(cmd_rsp, RSP4_MEM_PRESENT)));
+ sd_err(("num_funcs = %d\n", GFIELD(cmd_rsp, RSP4_NUM_FUNCS)));
+ sd_err(("card_ready = %d\n", GFIELD(cmd_rsp, RSP4_CARD_READY)));
+ sd_err(("OCR = 0x%x\n", GFIELD(cmd_rsp, RSP4_IO_OCR)));
+
+ /* Verify that the card supports I/O mode */
+ if (GFIELD(cmd_rsp, RSP4_NUM_FUNCS) == 0) {
+ sd_err(("%s: Card does not support I/O\n", __FUNCTION__));
+ return ERROR;
+ }
+
+ sd->num_funcs = GFIELD(cmd_rsp, RSP4_NUM_FUNCS);
+
+ /* Examine voltage: Arasan only supports 3.3 volts,
+ * so look for 3.2-3.3 Volts and also 3.3-3.4 volts.
+ */
+
+ if ((GFIELD(cmd_rsp, RSP4_IO_OCR) & (0x3 << 20)) == 0) {
+ sd_err(("This client does not support 3.3 volts!\n"));
+ return ERROR;
+ }
+
+
+ return TRUE;
+}
+
+static int
+sdspi_driver_init(sdioh_info_t *sd)
+{
+ sd_trace(("%s\n", __FUNCTION__));
+
+ if ((sdspi_host_init(sd)) != SUCCESS) {
+ return ERROR;
+ }
+
+ if (sdspi_client_init(sd) != SUCCESS) {
+ return ERROR;
+ }
+
+ return SUCCESS;
+}
+
+static int
+sdspi_card_enablefuncs(sdioh_info_t *sd)
+{
+ int status;
+ uint32 regdata;
+ uint32 regaddr, fbraddr;
+ uint8 func;
+ uint8 *ptr;
+
+ sd_trace(("%s\n", __FUNCTION__));
+ /* Get the Card's common CIS address */
+ ptr = (uint8 *) &sd->com_cis_ptr;
+ for (regaddr = SDIOD_CCCR_CISPTR_0; regaddr <= SDIOD_CCCR_CISPTR_2; regaddr++) {
+ if ((status = sdspi_card_regread (sd, 0, regaddr, 1, &regdata)) != SUCCESS)
+ return status;
+
+ *ptr++ = (uint8) regdata;
+ }
+
+ /* Only the lower 17-bits are valid */
+ sd->com_cis_ptr &= 0x0001FFFF;
+ sd->func_cis_ptr[0] = sd->com_cis_ptr;
+ sd_info(("%s: Card's Common CIS Ptr = 0x%x\n", __FUNCTION__, sd->com_cis_ptr));
+
+ /* Get the Card's function CIS (for each function) */
+ for (fbraddr = SDIOD_FBR_STARTADDR, func = 1;
+ func <= sd->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
+ ptr = (uint8 *) &sd->func_cis_ptr[func];
+ for (regaddr = SDIOD_FBR_CISPTR_0; regaddr <= SDIOD_FBR_CISPTR_2; regaddr++) {
+ if ((status = sdspi_card_regread (sd, 0, regaddr + fbraddr, 1, &regdata))
+ != SUCCESS)
+ return status;
+
+ *ptr++ = (uint8) regdata;
+ }
+
+ /* Only the lower 17-bits are valid */
+ sd->func_cis_ptr[func] &= 0x0001FFFF;
+ sd_info(("%s: Function %d CIS Ptr = 0x%x\n",
+ __FUNCTION__, func, sd->func_cis_ptr[func]));
+ }
+
+ sd_info(("%s: write ESCI bit\n", __FUNCTION__));
+ /* Enable continuous SPI interrupt (ESCI bit) */
+ sdspi_card_regwrite(sd, 0, SDIOD_CCCR_BICTRL, 1, 0x60);
+
+ sd_info(("%s: enable f1\n", __FUNCTION__));
+ /* Enable function 1 on the card */
+ regdata = SDIO_FUNC_ENABLE_1;
+ if ((status = sdspi_card_regwrite(sd, 0, SDIOD_CCCR_IOEN, 1, regdata)) != SUCCESS)
+ return status;
+
+ sd_info(("%s: done\n", __FUNCTION__));
+ return SUCCESS;
+}
+
+/* Read client card reg */
+static int
+sdspi_card_regread(sdioh_info_t *sd, int func, uint32 regaddr, int regsize, uint32 *data)
+{
+ int status;
+ uint32 cmd_arg;
+ uint32 rsp5;
+
+ cmd_arg = 0;
+
+ if ((func == 0) || (regsize == 1)) {
+ cmd_arg = SFIELD(cmd_arg, CMD52_FUNCTION, func);
+ cmd_arg = SFIELD(cmd_arg, CMD52_REG_ADDR, regaddr);
+ cmd_arg = SFIELD(cmd_arg, CMD52_RW_FLAG, SDIOH_XFER_TYPE_READ);
+ cmd_arg = SFIELD(cmd_arg, CMD52_RAW, 0);
+ cmd_arg = SFIELD(cmd_arg, CMD52_DATA, 0);
+
+ if ((status = sdspi_cmd_issue(sd, sd->sd_use_dma, SDIOH_CMD_52, cmd_arg, NULL, 0))
+ != SUCCESS)
+ return status;
+
+ sdspi_cmd_getrsp(sd, &rsp5, 1);
+
+ if (rsp5 != 0x00)
+ sd_err(("%s: rsp5 flags is 0x%x\t %d\n",
+ __FUNCTION__, rsp5, func));
+
+ *data = sd->card_rsp_data >> 24;
+ } else {
+ cmd_arg = SFIELD(cmd_arg, CMD53_BYTE_BLK_CNT, regsize);
+ cmd_arg = SFIELD(cmd_arg, CMD53_OP_CODE, 1);
+ cmd_arg = SFIELD(cmd_arg, CMD53_BLK_MODE, 0);
+ cmd_arg = SFIELD(cmd_arg, CMD53_FUNCTION, func);
+ cmd_arg = SFIELD(cmd_arg, CMD53_REG_ADDR, regaddr);
+ cmd_arg = SFIELD(cmd_arg, CMD53_RW_FLAG, SDIOH_XFER_TYPE_READ);
+
+ sd->data_xfer_count = regsize;
+
+ /* sdspi_cmd_issue() returns with the command complete bit
+ * in the ISR already cleared
+ */
+ if ((status = sdspi_cmd_issue(sd, sd->sd_use_dma, SDIOH_CMD_53, cmd_arg, NULL, 0))
+ != SUCCESS)
+ return status;
+
+ sdspi_cmd_getrsp(sd, &rsp5, 1);
+
+ if (rsp5 != 0x00)
+ sd_err(("%s: rsp5 flags is 0x%x\t %d\n",
+ __FUNCTION__, rsp5, func));
+
+ *data = sd->card_rsp_data;
+ if (regsize == 2) {
+ *data &= 0xffff;
+ }
+
+ sd_info(("%s: CMD53 func %d, addr 0x%x, size %d, data 0x%08x\n",
+ __FUNCTION__, func, regaddr, regsize, *data));
+
+
+ }
+
+ return SUCCESS;
+}
+
+/* write a client register */
+static int
+sdspi_card_regwrite(sdioh_info_t *sd, int func, uint32 regaddr, int regsize, uint32 data)
+{
+ int status;
+ uint32 cmd_arg, rsp5, flags;
+
+ cmd_arg = 0;
+
+ if ((func == 0) || (regsize == 1)) {
+ cmd_arg = SFIELD(cmd_arg, CMD52_FUNCTION, func);
+ cmd_arg = SFIELD(cmd_arg, CMD52_REG_ADDR, regaddr);
+ cmd_arg = SFIELD(cmd_arg, CMD52_RW_FLAG, SDIOH_XFER_TYPE_WRITE);
+ cmd_arg = SFIELD(cmd_arg, CMD52_RAW, 0);
+ cmd_arg = SFIELD(cmd_arg, CMD52_DATA, data & 0xff);
+ if ((status = sdspi_cmd_issue(sd, sd->sd_use_dma, SDIOH_CMD_52, cmd_arg, NULL, 0))
+ != SUCCESS)
+ return status;
+
+ sdspi_cmd_getrsp(sd, &rsp5, 1);
+ flags = GFIELD(rsp5, RSP5_FLAGS);
+ if (flags && (flags != 0x10))
+ sd_err(("%s: rsp5.rsp5.flags = 0x%x, expecting 0x10\n",
+ __FUNCTION__, flags));
+ }
+ else {
+ cmd_arg = SFIELD(cmd_arg, CMD53_BYTE_BLK_CNT, regsize);
+ cmd_arg = SFIELD(cmd_arg, CMD53_OP_CODE, 1);
+ cmd_arg = SFIELD(cmd_arg, CMD53_BLK_MODE, 0);
+ cmd_arg = SFIELD(cmd_arg, CMD53_FUNCTION, func);
+ cmd_arg = SFIELD(cmd_arg, CMD53_REG_ADDR, regaddr);
+ cmd_arg = SFIELD(cmd_arg, CMD53_RW_FLAG, SDIOH_XFER_TYPE_WRITE);
+
+ sd->data_xfer_count = regsize;
+ sd->cmd53_wr_data = data;
+
+ sd_info(("%s: CMD53 func %d, addr 0x%x, size %d, data 0x%08x\n",
+ __FUNCTION__, func, regaddr, regsize, data));
+
+ /* sdspi_cmd_issue() returns with the command complete bit
+ * in the ISR already cleared
+ */
+ if ((status = sdspi_cmd_issue(sd, sd->sd_use_dma, SDIOH_CMD_53, cmd_arg, NULL, 0))
+ != SUCCESS)
+ return status;
+
+ sdspi_cmd_getrsp(sd, &rsp5, 1);
+
+ if (rsp5 != 0x00)
+ sd_err(("%s: rsp5 flags = 0x%x, expecting 0x00\n",
+ __FUNCTION__, rsp5));
+
+ }
+ return SUCCESS;
+}
+
+void
+sdspi_cmd_getrsp(sdioh_info_t *sd, uint32 *rsp_buffer, int count /* num 32 bit words */)
+{
+ *rsp_buffer = sd->card_response;
+}
+
+int max_errors = 0;
+
+#define SPI_MAX_PKT_LEN 768
+uint8 spi_databuf[SPI_MAX_PKT_LEN];
+uint8 spi_rspbuf[SPI_MAX_PKT_LEN];
+
+/* datalen is used for CMD53 length only (0 for sd->data_xfer_count) */
+static int
+sdspi_cmd_issue(sdioh_info_t *sd, bool use_dma, uint32 cmd, uint32 arg,
+ uint32 *data, uint32 datalen)
+{
+ uint32 cmd_reg;
+ uint32 cmd_arg = arg;
+ uint8 cmd_crc = 0x95; /* correct CRC for CMD0 and don't care for others. */
+ uint16 dat_crc;
+ uint8 cmd52data = 0;
+ uint32 i, j;
+ uint32 spi_datalen = 0;
+ uint32 spi_pre_cmd_pad = 0;
+ uint32 spi_max_response_pad = 128;
+
+ cmd_reg = 0;
+ cmd_reg = SFIELD(cmd_reg, SPI_DIR, 1);
+ cmd_reg = SFIELD(cmd_reg, SPI_CMD_INDEX, cmd);
+
+ if (GFIELD(cmd_arg, CMD52_RW_FLAG) == 1) { /* Same for CMD52 and CMD53 */
+ cmd_reg = SFIELD(cmd_reg, SPI_RW, 1);
+ }
+
+ switch (cmd) {
+ case SDIOH_CMD_59: /* CRC_ON_OFF (SPI Mode Only) - Response R1 */
+ cmd52data = arg & 0x1;
+ case SDIOH_CMD_0: /* Set Card to Idle State - No Response */
+ case SDIOH_CMD_5: /* Send Operation condition - Response R4 */
+ sd_trace(("%s: CMD%d\n", __FUNCTION__, cmd));
+ spi_datalen = 44;
+ spi_pre_cmd_pad = 12;
+ spi_max_response_pad = 28;
+ break;
+
+ case SDIOH_CMD_3: /* Ask card to send RCA - Response R6 */
+ case SDIOH_CMD_7: /* Select card - Response R1 */
+ case SDIOH_CMD_15: /* Set card to inactive state - Response None */
+ sd_err(("%s: CMD%d is invalid for SPI Mode.\n", __FUNCTION__, cmd));
+ return ERROR;
+ break;
+
+ case SDIOH_CMD_52: /* IO R/W Direct (single byte) - Response R5 */
+ cmd52data = GFIELD(cmd_arg, CMD52_DATA);
+ cmd_arg = arg;
+ cmd_reg = SFIELD(cmd_reg, SPI_FUNC, GFIELD(cmd_arg, CMD52_FUNCTION));
+ cmd_reg = SFIELD(cmd_reg, SPI_ADDR, GFIELD(cmd_arg, CMD52_REG_ADDR));
+ /* Display trace for byte write */
+ if (GFIELD(cmd_arg, CMD52_RW_FLAG) == 1) {
+ sd_trace(("%s: CMD52: Wr F:%d @0x%04x=%02x\n",
+ __FUNCTION__,
+ GFIELD(cmd_arg, CMD52_FUNCTION),
+ GFIELD(cmd_arg, CMD52_REG_ADDR),
+ cmd52data));
+ }
+
+ spi_datalen = 32;
+ spi_max_response_pad = 28;
+
+ break;
+ case SDIOH_CMD_53: /* IO R/W Extended (multiple bytes/blocks) */
+ cmd_arg = arg;
+ cmd_reg = SFIELD(cmd_reg, SPI_FUNC, GFIELD(cmd_arg, CMD53_FUNCTION));
+ cmd_reg = SFIELD(cmd_reg, SPI_ADDR, GFIELD(cmd_arg, CMD53_REG_ADDR));
+ cmd_reg = SFIELD(cmd_reg, SPI_BLKMODE, 0);
+ cmd_reg = SFIELD(cmd_reg, SPI_OPCODE, GFIELD(cmd_arg, CMD53_OP_CODE));
+ cmd_reg = SFIELD(cmd_reg, SPI_STUFF0, (sd->data_xfer_count>>8));
+ cmd52data = (uint8)sd->data_xfer_count;
+
+ /* Set upper bit in byte count if necessary, but don't set it for 512 bytes. */
+ if ((sd->data_xfer_count > 255) && (sd->data_xfer_count < 512)) {
+ cmd_reg |= 1;
+ }
+
+ if (GFIELD(cmd_reg, SPI_RW) == 1) { /* Write */
+ spi_max_response_pad = 32;
+ spi_datalen = (sd->data_xfer_count + spi_max_response_pad) & 0xFFFC;
+ } else { /* Read */
+
+ spi_max_response_pad = 32;
+ spi_datalen = (sd->data_xfer_count + spi_max_response_pad) & 0xFFFC;
+ }
+ sd_trace(("%s: CMD53: %s F:%d @0x%04x len=0x%02x\n",
+ __FUNCTION__,
+ (GFIELD(cmd_reg, SPI_RW) == 1 ? "Wr" : "Rd"),
+ GFIELD(cmd_arg, CMD53_FUNCTION),
+ GFIELD(cmd_arg, CMD53_REG_ADDR),
+ cmd52data));
+ break;
+
+ default:
+ sd_err(("%s: Unknown command %d\n", __FUNCTION__, cmd));
+ return ERROR;
+ }
+
+ /* Set up and issue the SDIO command */
+ memset(spi_databuf, SDSPI_IDLE_PAD, spi_datalen);
+ spi_databuf[spi_pre_cmd_pad + 0] = (cmd_reg & 0xFF000000) >> 24;
+ spi_databuf[spi_pre_cmd_pad + 1] = (cmd_reg & 0x00FF0000) >> 16;
+ spi_databuf[spi_pre_cmd_pad + 2] = (cmd_reg & 0x0000FF00) >> 8;
+ spi_databuf[spi_pre_cmd_pad + 3] = (cmd_reg & 0x000000FF);
+ spi_databuf[spi_pre_cmd_pad + 4] = cmd52data;
+
+ /* Generate CRC7 for command, if CRC is enabled, otherwise, a
+ * default CRC7 of 0x95, which is correct for CMD0, is used.
+ */
+ if (sd_crc) {
+ cmd_crc = sdspi_crc7(&spi_databuf[spi_pre_cmd_pad], 5);
+ }
+ spi_databuf[spi_pre_cmd_pad + 5] = cmd_crc;
+#define SPI_STOP_TRAN 0xFD
+
+ /* for CMD53 Write, put the data into the output buffer */
+ if ((cmd == SDIOH_CMD_53) && (GFIELD(cmd_arg, CMD53_RW_FLAG) == 1)) {
+ if (datalen != 0) {
+ spi_databuf[spi_pre_cmd_pad + 9] = SDSPI_IDLE_PAD;
+ spi_databuf[spi_pre_cmd_pad + 10] = SDSPI_START_BLOCK;
+
+ for (i = 0; i < sd->data_xfer_count; i++) {
+ spi_databuf[i + 11 + spi_pre_cmd_pad] = ((uint8 *)data)[i];
+ }
+ if (sd_crc) {
+ dat_crc = sdspi_crc16(&spi_databuf[spi_pre_cmd_pad+11], i);
+ } else {
+ dat_crc = 0xAAAA;
+ }
+ spi_databuf[i + 11 + spi_pre_cmd_pad] = (dat_crc >> 8) & 0xFF;
+ spi_databuf[i + 12 + spi_pre_cmd_pad] = dat_crc & 0xFF;
+ } else if (sd->data_xfer_count == 2) {
+ spi_databuf[spi_pre_cmd_pad + 9] = SDSPI_IDLE_PAD;
+ spi_databuf[spi_pre_cmd_pad + 10] = SDSPI_START_BLOCK;
+ spi_databuf[spi_pre_cmd_pad + 11] = sd->cmd53_wr_data & 0xFF;
+ spi_databuf[spi_pre_cmd_pad + 12] = (sd->cmd53_wr_data & 0x0000FF00) >> 8;
+ if (sd_crc) {
+ dat_crc = sdspi_crc16(&spi_databuf[spi_pre_cmd_pad+11], 2);
+ } else {
+ dat_crc = 0x22AA;
+ }
+ spi_databuf[spi_pre_cmd_pad + 13] = (dat_crc >> 8) & 0xFF;
+ spi_databuf[spi_pre_cmd_pad + 14] = (dat_crc & 0xFF);
+ } else if (sd->data_xfer_count == 4) {
+ spi_databuf[spi_pre_cmd_pad + 9] = SDSPI_IDLE_PAD;
+ spi_databuf[spi_pre_cmd_pad + 10] = SDSPI_START_BLOCK;
+ spi_databuf[spi_pre_cmd_pad + 11] = sd->cmd53_wr_data & 0xFF;
+ spi_databuf[spi_pre_cmd_pad + 12] = (sd->cmd53_wr_data & 0x0000FF00) >> 8;
+ spi_databuf[spi_pre_cmd_pad + 13] = (sd->cmd53_wr_data & 0x00FF0000) >> 16;
+ spi_databuf[spi_pre_cmd_pad + 14] = (sd->cmd53_wr_data & 0xFF000000) >> 24;
+ if (sd_crc) {
+ dat_crc = sdspi_crc16(&spi_databuf[spi_pre_cmd_pad+11], 4);
+ } else {
+ dat_crc = 0x44AA;
+ }
+ spi_databuf[spi_pre_cmd_pad + 15] = (dat_crc >> 8) & 0xFF;
+ spi_databuf[spi_pre_cmd_pad + 16] = (dat_crc & 0xFF);
+ } else {
+ printf("CMD53 Write: size %d unsupported\n", sd->data_xfer_count);
+ }
+ }
+
+ spi_sendrecv(sd, spi_databuf, spi_rspbuf, spi_datalen);
+
+ for (i = spi_pre_cmd_pad + SDSPI_COMMAND_LEN; i < spi_max_response_pad; i++) {
+ if ((spi_rspbuf[i] & SDSPI_START_BIT_MASK) == 0) {
+ break;
+ }
+ }
+
+ if (i == spi_max_response_pad) {
+ sd_err(("%s: Did not get a response for CMD%d\n", __FUNCTION__, cmd));
+ return ERROR;
+ }
+
+ /* Extract the response. */
+ sd->card_response = spi_rspbuf[i];
+
+ /* for CMD53 Read, find the start of the response data... */
+ if ((cmd == SDIOH_CMD_53) && (GFIELD(cmd_arg, CMD52_RW_FLAG) == 0)) {
+ for (; i < spi_max_response_pad; i++) {
+ if (spi_rspbuf[i] == SDSPI_START_BLOCK) {
+ break;
+ }
+ }
+
+ if (i == spi_max_response_pad) {
+ printf("Did not get a start of data phase for CMD%d\n", cmd);
+ max_errors++;
+ sdspi_abort(sd, GFIELD(cmd_arg, CMD53_FUNCTION));
+ }
+ sd->card_rsp_data = spi_rspbuf[i+1];
+ sd->card_rsp_data |= spi_rspbuf[i+2] << 8;
+ sd->card_rsp_data |= spi_rspbuf[i+3] << 16;
+ sd->card_rsp_data |= spi_rspbuf[i+4] << 24;
+
+ if (datalen != 0) {
+ i++;
+ for (j = 0; j < sd->data_xfer_count; j++) {
+ ((uint8 *)data)[j] = spi_rspbuf[i+j];
+ }
+ if (sd_crc) {
+ uint16 recv_crc;
+
+ recv_crc = spi_rspbuf[i+j] << 8 | spi_rspbuf[i+j+1];
+ dat_crc = sdspi_crc16((uint8 *)data, datalen);
+ if (dat_crc != recv_crc) {
+ sd_err(("%s: Incorrect data CRC: expected 0x%04x, "
+ "received 0x%04x\n",
+ __FUNCTION__, dat_crc, recv_crc));
+ }
+ }
+ }
+ return SUCCESS;
+ }
+
+ sd->card_rsp_data = spi_rspbuf[i+4];
+ sd->card_rsp_data |= spi_rspbuf[i+3] << 8;
+ sd->card_rsp_data |= spi_rspbuf[i+2] << 16;
+ sd->card_rsp_data |= spi_rspbuf[i+1] << 24;
+
+ /* Display trace for byte read */
+ if ((cmd == SDIOH_CMD_52) && (GFIELD(cmd_arg, CMD52_RW_FLAG) == 0)) {
+ sd_trace(("%s: CMD52: Rd F:%d @0x%04x=%02x\n",
+ __FUNCTION__,
+ GFIELD(cmd_arg, CMD53_FUNCTION),
+ GFIELD(cmd_arg, CMD53_REG_ADDR),
+ sd->card_rsp_data >> 24));
+ }
+
+ return SUCCESS;
+}
+
+/*
+ * On entry: if single-block or non-block, buffer size <= block size.
+ * If multi-block, buffer size is unlimited.
+ * Question is how to handle the left-overs in either single- or multi-block.
+ * I think the caller should break the buffer up so this routine will always
+ * use block size == buffer size to handle the end piece of the buffer
+ */
+
+static int
+sdspi_card_buf(sdioh_info_t *sd, int rw, int func, bool fifo, uint32 addr, int nbytes, uint32 *data)
+{
+ int status;
+ uint32 cmd_arg;
+ uint32 rsp5;
+ int num_blocks, blocksize;
+ bool local_blockmode, local_dma;
+ bool read = rw == SDIOH_READ ? 1 : 0;
+
+ ASSERT(nbytes);
+
+ cmd_arg = 0;
+ sd_data(("%s: %s 53 func %d, %s, addr 0x%x, len %d bytes, r_cnt %d t_cnt %d\n",
+ __FUNCTION__, read ? "Rd" : "Wr", func, fifo ? "FIXED" : "INCR",
+ addr, nbytes, sd->r_cnt, sd->t_cnt));
+
+ if (read) sd->r_cnt++; else sd->t_cnt++;
+
+ local_blockmode = sd->sd_blockmode;
+ local_dma = sd->sd_use_dma;
+
+ /* Don't bother with block mode on small xfers */
+ if (nbytes < sd->client_block_size[func]) {
+ sd_info(("setting local blockmode to false: nbytes (%d) != block_size (%d)\n",
+ nbytes, sd->client_block_size[func]));
+ local_blockmode = FALSE;
+ local_dma = FALSE;
+ }
+
+ if (local_blockmode) {
+ blocksize = MIN(sd->client_block_size[func], nbytes);
+ num_blocks = nbytes/blocksize;
+ cmd_arg = SFIELD(cmd_arg, CMD53_BYTE_BLK_CNT, num_blocks);
+ cmd_arg = SFIELD(cmd_arg, CMD53_BLK_MODE, 1);
+ } else {
+ num_blocks = 1;
+ blocksize = nbytes;
+ cmd_arg = SFIELD(cmd_arg, CMD53_BYTE_BLK_CNT, nbytes);
+ cmd_arg = SFIELD(cmd_arg, CMD53_BLK_MODE, 0);
+ }
+
+ if (fifo)
+ cmd_arg = SFIELD(cmd_arg, CMD53_OP_CODE, 0);
+ else
+ cmd_arg = SFIELD(cmd_arg, CMD53_OP_CODE, 1);
+
+ cmd_arg = SFIELD(cmd_arg, CMD53_FUNCTION, func);
+ cmd_arg = SFIELD(cmd_arg, CMD53_REG_ADDR, addr);
+ if (read)
+ cmd_arg = SFIELD(cmd_arg, CMD53_RW_FLAG, SDIOH_XFER_TYPE_READ);
+ else
+ cmd_arg = SFIELD(cmd_arg, CMD53_RW_FLAG, SDIOH_XFER_TYPE_WRITE);
+
+ sd->data_xfer_count = nbytes;
+ if ((func == 2) && (fifo == 1)) {
+ sd_data(("%s: %s 53 func %d, %s, addr 0x%x, len %d bytes, r_cnt %d t_cnt %d\n",
+ __FUNCTION__, read ? "Rd" : "Wr", func, fifo ? "FIXED" : "INCR",
+ addr, nbytes, sd->r_cnt, sd->t_cnt));
+ }
+
+ /* sdspi_cmd_issue() returns with the command complete bit
+ * in the ISR already cleared
+ */
+ if ((status = sdspi_cmd_issue(sd, local_dma,
+ SDIOH_CMD_53, cmd_arg,
+ data, nbytes)) != SUCCESS) {
+ sd_err(("%s: cmd_issue failed for %s\n", __FUNCTION__, (read ? "read" : "write")));
+ return status;
+ }
+
+ sdspi_cmd_getrsp(sd, &rsp5, 1);
+
+ if (rsp5 != 0x00) {
+ sd_err(("%s: rsp5 flags = 0x%x, expecting 0x00\n",
+ __FUNCTION__, rsp5));
+ return ERROR;
+ }
+
+ return SUCCESS;
+}
+
+static int
+set_client_block_size(sdioh_info_t *sd, int func, int block_size)
+{
+ int base;
+ int err = 0;
+
+ sd_err(("%s: Setting block size %d, func %d\n", __FUNCTION__, block_size, func));
+ sd->client_block_size[func] = block_size;
+
+ /* Set the block size in the SDIO Card register */
+ base = func * SDIOD_FBR_SIZE;
+ err = sdspi_card_regwrite(sd, 0, base + SDIOD_CCCR_BLKSIZE_0, 1, block_size & 0xff);
+ if (!err) {
+ err = sdspi_card_regwrite(sd, 0, base + SDIOD_CCCR_BLKSIZE_1, 1,
+ (block_size >> 8) & 0xff);
+ }
+
+ /*
+ * Do not set the block size in the SDIO Host register; that
+ * is func dependent and will get done on an individual
+ * transaction basis.
+ */
+
+ return (err ? BCME_SDIO_ERROR : 0);
+}
+
+/* Reset and re-initialize the device */
+int
+sdioh_sdio_reset(sdioh_info_t *si)
+{
+ si->card_init_done = FALSE;
+ return sdspi_client_init(si);
+}
+
+#define CRC7_POLYNOM 0x09
+#define CRC7_CRCHIGHBIT 0x40
+
+static uint8 sdspi_crc7(unsigned char* p, uint32 len)
+{
+ uint8 c, j, bit, crc = 0;
+ uint32 i;
+
+ for (i = 0; i < len; i++) {
+ c = *p++;
+ for (j = 0x80; j; j >>= 1) {
+ bit = crc & CRC7_CRCHIGHBIT;
+ crc <<= 1;
+ if (c & j) bit ^= CRC7_CRCHIGHBIT;
+ if (bit) crc ^= CRC7_POLYNOM;
+ }
+ }
+
+ /* Convert the CRC7 to an 8-bit SD CRC */
+ crc = (crc << 1) | 1;
+
+ return (crc);
+}
+
+#define CRC16_POLYNOM 0x1021
+#define CRC16_CRCHIGHBIT 0x8000
+
+static uint16 sdspi_crc16(unsigned char* p, uint32 len)
+{
+ uint32 i;
+ uint16 j, c, bit;
+ uint16 crc = 0;
+
+ for (i = 0; i < len; i++) {
+ c = *p++;
+ for (j = 0x80; j; j >>= 1) {
+ bit = crc & CRC16_CRCHIGHBIT;
+ crc <<= 1;
+ if (c & j) bit ^= CRC16_CRCHIGHBIT;
+ if (bit) crc ^= CRC16_POLYNOM;
+ }
+ }
+
+ return (crc);
+}
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-14 18:24:25 +0000