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nest-open-source / manifest_repos / dhd-driver / refs/heads/main / . / bcmdhd.101.10.361.x / dbus.c
blob: 59ded3bd27b18d7593f8110530b6a1decb7e949d [file] [log] [blame]
/** @file dbus.c
*
* Hides details of USB / SDIO / SPI interfaces and OS details. It is intended to shield details and
* provide the caller with one common bus interface for all dongle devices. In practice, it is only
* used for USB interfaces. DBUS is not a protocol, but an abstraction layer.
*
* Copyright (C) 1999-2016, 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.
*
*
* <<Broadcom-WL-IPTag/Open:>>
*
* $Id: dbus.c 553311 2015-04-29 10:23:08Z $
*/
#include "osl.h"
#include "dbus.h"
#include <bcmutils.h>
#include <dngl_stats.h>
#include <dhd.h>
#include <dhd_proto.h>
#ifdef PROP_TXSTATUS /* a form of flow control between host and dongle */
#include <dhd_wlfc.h>
#endif
#include <dhd_config.h>
#if defined(BCM_REQUEST_FW)
#include <bcmsrom_fmt.h>
#include <trxhdr.h>
#include <usbrdl.h>
#include <bcmendian.h>
#include <sbpcmcia.h>
#include <bcmnvram.h>
#include <bcmdevs.h>
#endif
#if defined(BCM_REQUEST_FW)
#ifndef VARS_MAX
#define VARS_MAX 8192
#endif
#endif
#ifdef DBUS_USB_LOOPBACK
extern bool is_loopback_pkt(void *buf);
extern int matches_loopback_pkt(void *buf);
#endif
/** General info for all BUS types */
typedef struct dbus_irbq {
dbus_irb_t *head;
dbus_irb_t *tail;
int cnt;
} dbus_irbq_t;
/**
* This private structure dhd_bus_t is also declared in dbus_usb_linux.c.
* All the fields must be consistent in both declarations.
*/
typedef struct dhd_bus {
dbus_pub_t pub; /* MUST BE FIRST */
dhd_pub_t *dhd;
void *cbarg;
dbus_callbacks_t *cbs; /* callbacks to higher level, e.g. dhd_linux.c */
void *bus_info;
dbus_intf_t *drvintf; /* callbacks to lower level, e.g. dbus_usb.c or dbus_usb_linux.c */
uint8 *fw;
int fwlen;
uint32 errmask;
int rx_low_watermark; /* avoid rx overflow by filling rx with free IRBs */
int tx_low_watermark;
bool txoff;
bool txoverride; /* flow control related */
bool rxoff;
bool tx_timer_ticking;
dbus_irbq_t *rx_q;
dbus_irbq_t *tx_q;
uint8 *nvram;
int nvram_len;
uint8 *image; /* buffer for combine fw and nvram */
int image_len;
uint8 *orig_fw;
int origfw_len;
int decomp_memsize;
dbus_extdl_t extdl;
int nvram_nontxt;
#if defined(BCM_REQUEST_FW)
void *firmware;
void *nvfile;
#endif
char *fw_path; /* module_param: path to firmware image */
char *nv_path; /* module_param: path to nvram vars file */
} dhd_bus_t;
struct exec_parms {
union {
/* Can consolidate same params, if need be, but this shows
* group of parameters per function
*/
struct {
dbus_irbq_t *q;
dbus_irb_t *b;
} qenq;
struct {
dbus_irbq_t *q;
} qdeq;
};
};
#define EXEC_RXLOCK(info, fn, a) \
info->drvintf->exec_rxlock(dhd_bus->bus_info, ((exec_cb_t)fn), ((struct exec_parms *) a))
#define EXEC_TXLOCK(info, fn, a) \
info->drvintf->exec_txlock(dhd_bus->bus_info, ((exec_cb_t)fn), ((struct exec_parms *) a))
/*
* Callbacks common for all BUS
*/
static void dbus_if_send_irb_timeout(void *handle, dbus_irb_tx_t *txirb);
static void dbus_if_send_irb_complete(void *handle, dbus_irb_tx_t *txirb, int status);
static void dbus_if_recv_irb_complete(void *handle, dbus_irb_rx_t *rxirb, int status);
static void dbus_if_errhandler(void *handle, int err);
static void dbus_if_ctl_complete(void *handle, int type, int status);
static void dbus_if_state_change(void *handle, int state);
static void *dbus_if_pktget(void *handle, uint len, bool send);
static void dbus_if_pktfree(void *handle, void *p, bool send);
static struct dbus_irb *dbus_if_getirb(void *cbarg, bool send);
static void dbus_if_rxerr_indicate(void *handle, bool on);
void * dhd_dbus_probe_cb(void *arg, const char *desc, uint32 bustype,
uint16 bus_no, uint16 slot, uint32 hdrlen);
void dhd_dbus_disconnect_cb(void *arg);
void dbus_detach(dhd_bus_t *pub);
/** functions in this file that are called by lower DBUS levels, e.g. dbus_usb.c */
static dbus_intf_callbacks_t dbus_intf_cbs = {
dbus_if_send_irb_timeout,
dbus_if_send_irb_complete,
dbus_if_recv_irb_complete,
dbus_if_errhandler,
dbus_if_ctl_complete,
dbus_if_state_change,
NULL, /* isr */
NULL, /* dpc */
NULL, /* watchdog */
dbus_if_pktget,
dbus_if_pktfree,
dbus_if_getirb,
dbus_if_rxerr_indicate
};
/*
* Need global for probe() and disconnect() since
* attach() is not called at probe and detach()
* can be called inside disconnect()
*/
static dbus_intf_t *g_busintf = NULL;
static probe_cb_t probe_cb = NULL;
static disconnect_cb_t disconnect_cb = NULL;
static void *probe_arg = NULL;
static void *disc_arg = NULL;
#if defined(BCM_REQUEST_FW)
int8 *nonfwnvram = NULL; /* stand-alone multi-nvram given with driver load */
int nonfwnvramlen = 0;
#endif /* #if defined(BCM_REQUEST_FW) */
static void* q_enq(dbus_irbq_t *q, dbus_irb_t *b);
static void* q_enq_exec(struct exec_parms *args);
static dbus_irb_t*q_deq(dbus_irbq_t *q);
static void* q_deq_exec(struct exec_parms *args);
static int dbus_tx_timer_init(dhd_bus_t *dhd_bus);
static int dbus_tx_timer_start(dhd_bus_t *dhd_bus, uint timeout);
static int dbus_tx_timer_stop(dhd_bus_t *dhd_bus);
static int dbus_irbq_init(dhd_bus_t *dhd_bus, dbus_irbq_t *q, int nq, int size_irb);
static int dbus_irbq_deinit(dhd_bus_t *dhd_bus, dbus_irbq_t *q, int size_irb);
static int dbus_rxirbs_fill(dhd_bus_t *dhd_bus);
static int dbus_send_irb(dbus_pub_t *pub, uint8 *buf, int len, void *pkt, void *info);
static void dbus_disconnect(void *handle);
static void *dbus_probe(void *arg, const char *desc, uint32 bustype,
uint16 bus_no, uint16 slot, uint32 hdrlen);
#if defined(BCM_REQUEST_FW)
extern char * dngl_firmware;
extern unsigned int dngl_fwlen;
#ifndef EXTERNAL_FW_PATH
static int dbus_get_nvram(dhd_bus_t *dhd_bus);
static int dbus_jumbo_nvram(dhd_bus_t *dhd_bus);
static int dbus_otp(dhd_bus_t *dhd_bus, uint16 *boardtype, uint16 *boardrev);
static int dbus_select_nvram(dhd_bus_t *dhd_bus, int8 *jumbonvram, int jumbolen,
uint16 boardtype, uint16 boardrev, int8 **nvram, int *nvram_len);
#endif /* !EXTERNAL_FW_PATH */
extern int dbus_zlib_decomp(dhd_bus_t *dhd_bus);
extern void *dbus_zlib_calloc(int num, int size);
extern void dbus_zlib_free(void *ptr);
#endif
/* function */
void
dbus_flowctrl_tx(void *dbi, bool on)
{
dhd_bus_t *dhd_bus = dbi;
if (dhd_bus == NULL)
return;
DBUSTRACE(("%s on %d\n", __FUNCTION__, on));
if (dhd_bus->txoff == on)
return;
dhd_bus->txoff = on;
if (dhd_bus->cbs && dhd_bus->cbs->txflowcontrol)
dhd_bus->cbs->txflowcontrol(dhd_bus->cbarg, on);
}
/**
* if lower level DBUS signaled a rx error, more free rx IRBs should be allocated or flow control
* should kick in to make more free rx IRBs available.
*/
static void
dbus_if_rxerr_indicate(void *handle, bool on)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) handle;
DBUSTRACE(("%s, on %d\n", __FUNCTION__, on));
if (dhd_bus == NULL)
return;
if (dhd_bus->txoverride == on)
return;
dhd_bus->txoverride = on; /* flow control */
if (!on)
dbus_rxirbs_fill(dhd_bus);
}
/** q_enq()/q_deq() are executed with protection via exec_rxlock()/exec_txlock() */
static void*
q_enq(dbus_irbq_t *q, dbus_irb_t *b)
{
ASSERT(q->tail != b);
ASSERT(b->next == NULL);
b->next = NULL;
if (q->tail) {
q->tail->next = b;
q->tail = b;
} else
q->head = q->tail = b;
q->cnt++;
return b;
}
static void*
q_enq_exec(struct exec_parms *args)
{
return q_enq(args->qenq.q, args->qenq.b);
}
static dbus_irb_t*
q_deq(dbus_irbq_t *q)
{
dbus_irb_t *b;
b = q->head;
if (b) {
q->head = q->head->next;
b->next = NULL;
if (q->head == NULL)
q->tail = q->head;
q->cnt--;
}
return b;
}
static void*
q_deq_exec(struct exec_parms *args)
{
return q_deq(args->qdeq.q);
}
/**
* called during attach phase. Status @ Dec 2012: this function does nothing since for all of the
* lower DBUS levels dhd_bus->drvintf->tx_timer_init is NULL.
*/
static int
dbus_tx_timer_init(dhd_bus_t *dhd_bus)
{
if (dhd_bus && dhd_bus->drvintf && dhd_bus->drvintf->tx_timer_init)
return dhd_bus->drvintf->tx_timer_init(dhd_bus->bus_info);
else
return DBUS_ERR;
}
static int
dbus_tx_timer_start(dhd_bus_t *dhd_bus, uint timeout)
{
if (dhd_bus == NULL)
return DBUS_ERR;
if (dhd_bus->tx_timer_ticking)
return DBUS_OK;
if (dhd_bus->drvintf && dhd_bus->drvintf->tx_timer_start) {
if (dhd_bus->drvintf->tx_timer_start(dhd_bus->bus_info, timeout) == DBUS_OK) {
dhd_bus->tx_timer_ticking = TRUE;
return DBUS_OK;
}
}
return DBUS_ERR;
}
static int
dbus_tx_timer_stop(dhd_bus_t *dhd_bus)
{
if (dhd_bus == NULL)
return DBUS_ERR;
if (!dhd_bus->tx_timer_ticking)
return DBUS_OK;
if (dhd_bus->drvintf && dhd_bus->drvintf->tx_timer_stop) {
if (dhd_bus->drvintf->tx_timer_stop(dhd_bus->bus_info) == DBUS_OK) {
dhd_bus->tx_timer_ticking = FALSE;
return DBUS_OK;
}
}
return DBUS_ERR;
}
/** called during attach phase. */
static int
dbus_irbq_init(dhd_bus_t *dhd_bus, dbus_irbq_t *q, int nq, int size_irb)
{
int i;
dbus_irb_t *irb;
ASSERT(q);
ASSERT(dhd_bus);
for (i = 0; i < nq; i++) {
/* MALLOC dbus_irb_tx or dbus_irb_rx, but cast to simple dbus_irb_t linkedlist */
irb = (dbus_irb_t *) MALLOC(dhd_bus->pub.osh, size_irb);
if (irb == NULL) {
ASSERT(irb);
return DBUS_ERR;
}
bzero(irb, size_irb);
/* q_enq() does not need to go through EXEC_xxLOCK() during init() */
q_enq(q, irb);
}
return DBUS_OK;
}
/** called during detach phase or when attach failed */
static int
dbus_irbq_deinit(dhd_bus_t *dhd_bus, dbus_irbq_t *q, int size_irb)
{
dbus_irb_t *irb;
ASSERT(q);
ASSERT(dhd_bus);
/* q_deq() does not need to go through EXEC_xxLOCK()
* during deinit(); all callbacks are stopped by this time
*/
while ((irb = q_deq(q)) != NULL) {
MFREE(dhd_bus->pub.osh, irb, size_irb);
}
if (q->cnt)
DBUSERR(("deinit: q->cnt=%d > 0\n", q->cnt));
return DBUS_OK;
}
/** multiple code paths require the rx queue to be filled with more free IRBs */
static int
dbus_rxirbs_fill(dhd_bus_t *dhd_bus)
{
int err = DBUS_OK;
dbus_irb_rx_t *rxirb;
struct exec_parms args;
ASSERT(dhd_bus);
if (dhd_bus->pub.busstate != DBUS_STATE_UP) {
DBUSERR(("dbus_rxirbs_fill: DBUS not up \n"));
return DBUS_ERR;
} else if (!dhd_bus->drvintf || (dhd_bus->drvintf->recv_irb == NULL)) {
/* Lower edge bus interface does not support recv_irb().
* No need to pre-submit IRBs in this case.
*/
return DBUS_ERR;
}
/* The dongle recv callback is freerunning without lock. So multiple callbacks(and this
* refill) can run in parallel. While the rxoff condition is triggered outside,
* below while loop has to check and abort posting more to avoid RPC rxq overflow.
*/
args.qdeq.q = dhd_bus->rx_q;
while ((!dhd_bus->rxoff) &&
(rxirb = (EXEC_RXLOCK(dhd_bus, q_deq_exec, &args))) != NULL) {
err = dhd_bus->drvintf->recv_irb(dhd_bus->bus_info, rxirb);
if (err == DBUS_ERR_RXDROP || err == DBUS_ERR_RXFAIL) {
/* Add the the free rxirb back to the queue
* and wait till later
*/
bzero(rxirb, sizeof(dbus_irb_rx_t));
args.qenq.q = dhd_bus->rx_q;
args.qenq.b = (dbus_irb_t *) rxirb;
EXEC_RXLOCK(dhd_bus, q_enq_exec, &args);
break;
} else if (err != DBUS_OK) {
int i = 0;
while (i++ < 100) {
DBUSERR(("%s :: memory leak for rxirb note?\n", __FUNCTION__));
}
}
}
return err;
} /* dbus_rxirbs_fill */
/** called when the DBUS interface state changed. */
void
dbus_flowctrl_rx(dbus_pub_t *pub, bool on)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
if (dhd_bus == NULL)
return;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus->rxoff == on)
return;
dhd_bus->rxoff = on;
if (dhd_bus->pub.busstate == DBUS_STATE_UP) {
if (!on) {
/* post more irbs, resume rx if necessary */
dbus_rxirbs_fill(dhd_bus);
if (dhd_bus && dhd_bus->drvintf->recv_resume) {
dhd_bus->drvintf->recv_resume(dhd_bus->bus_info);
}
} else {
/* ??? cancell posted irbs first */
if (dhd_bus && dhd_bus->drvintf->recv_stop) {
dhd_bus->drvintf->recv_stop(dhd_bus->bus_info);
}
}
}
}
/**
* Several code paths in this file want to send a buffer to the dongle. This function handles both
* sending of a buffer or a pkt.
*/
static int
dbus_send_irb(dbus_pub_t *pub, uint8 *buf, int len, void *pkt, void *info)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int err = DBUS_OK;
dbus_irb_tx_t *txirb = NULL;
int txirb_pending;
struct exec_parms args;
if (dhd_bus == NULL)
return DBUS_ERR;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus->pub.busstate == DBUS_STATE_UP ||
dhd_bus->pub.busstate == DBUS_STATE_SLEEP) {
args.qdeq.q = dhd_bus->tx_q;
if (dhd_bus->drvintf)
txirb = EXEC_TXLOCK(dhd_bus, q_deq_exec, &args);
if (txirb == NULL) {
DBUSERR(("Out of tx dbus_bufs\n"));
return DBUS_ERR;
}
if (pkt != NULL) {
txirb->pkt = pkt;
txirb->buf = NULL;
txirb->len = 0;
} else if (buf != NULL) {
txirb->pkt = NULL;
txirb->buf = buf;
txirb->len = len;
} else {
ASSERT(0); /* Should not happen */
}
txirb->info = info;
txirb->arg = NULL;
txirb->retry_count = 0;
if (dhd_bus->drvintf && dhd_bus->drvintf->send_irb) {
/* call lower DBUS level send_irb function */
err = dhd_bus->drvintf->send_irb(dhd_bus->bus_info, txirb);
if (err == DBUS_ERR_TXDROP) {
/* tx fail and no completion routine to clean up, reclaim irb NOW */
DBUSERR(("%s: send_irb failed, status = %d\n", __FUNCTION__, err));
bzero(txirb, sizeof(dbus_irb_tx_t));
args.qenq.q = dhd_bus->tx_q;
args.qenq.b = (dbus_irb_t *) txirb;
EXEC_TXLOCK(dhd_bus, q_enq_exec, &args);
} else {
dbus_tx_timer_start(dhd_bus, DBUS_TX_TIMEOUT_INTERVAL);
txirb_pending = dhd_bus->pub.ntxq - dhd_bus->tx_q->cnt;
if (txirb_pending > (dhd_bus->tx_low_watermark * 3)) {
dbus_flowctrl_tx(dhd_bus, TRUE);
}
}
}
} else {
err = DBUS_ERR_TXFAIL;
DBUSTRACE(("%s: bus down, send_irb failed\n", __FUNCTION__));
}
return err;
} /* dbus_send_irb */
#if defined(BCM_REQUEST_FW)
/**
* Before downloading a firmware image into the dongle, the validity of the image must be checked.
*/
static int
check_file(osl_t *osh, unsigned char *headers)
{
struct trx_header *trx;
int actual_len = -1;
/* Extract trx header */
trx = (struct trx_header *)headers;
if (ltoh32(trx->magic) != TRX_MAGIC) {
printf("Error: trx bad hdr %x\n", ltoh32(trx->magic));
return -1;
}
headers += SIZEOF_TRX(trx);
/* TRX V1: get firmware len */
/* TRX V2: get firmware len and DSG/CFG lengths */
if (ltoh32(trx->flag_version) & TRX_UNCOMP_IMAGE) {
actual_len = ltoh32(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]) +
SIZEOF_TRX(trx);
#ifdef BCMTRXV2
if (ISTRX_V2(trx)) {
actual_len += ltoh32(trx->offsets[TRX_OFFSETS_DSG_LEN_IDX]) +
ltoh32(trx->offsets[TRX_OFFSETS_CFG_LEN_IDX]);
}
#endif
return actual_len;
} else {
printf("compressed image\n");
}
return -1;
}
#ifdef EXTERNAL_FW_PATH
static int
dbus_get_fw_nvram(dhd_bus_t *dhd_bus, char *pfw_path, char *pnv_path)
{
int bcmerror = -1, i;
uint len, total_len;
void *nv_image = NULL, *fw_image = NULL;
char *nv_memblock = NULL, *fw_memblock = NULL;
char *bufp;
bool file_exists;
uint8 nvram_words_pad = 0;
uint memblock_size = 2048;
uint8 *memptr;
int actual_fwlen;
struct trx_header *hdr;
uint32 img_offset = 0;
int offset = 0;
/* For Get nvram */
file_exists = ((pnv_path != NULL) && (pnv_path[0] != '\0'));
if (file_exists) {
nv_image = dhd_os_open_image1(dhd_bus->dhd, pnv_path);
if (nv_image == NULL) {
printf("%s: Open nvram file failed %s\n", __FUNCTION__, pnv_path);
goto err;
}
}
nv_memblock = MALLOC(dhd_bus->pub.osh, MAX_NVRAMBUF_SIZE);
if (nv_memblock == NULL) {
DBUSERR(("%s: Failed to allocate memory %d bytes\n",
__FUNCTION__, MAX_NVRAMBUF_SIZE));
goto err;
}
len = dhd_os_get_image_block(nv_memblock, MAX_NVRAMBUF_SIZE, nv_image);
if (len > 0 && len < MAX_NVRAMBUF_SIZE) {
bufp = (char *)nv_memblock;
bufp[len] = 0;
dhd_bus->nvram_len = process_nvram_vars(bufp, len);
if (dhd_bus->nvram_len % 4)
nvram_words_pad = 4 - dhd_bus->nvram_len % 4;
} else {
DBUSERR(("%s: error reading nvram file: %d\n", __FUNCTION__, len));
bcmerror = DBUS_ERR_NVRAM;
goto err;
}
if (nv_image) {
dhd_os_close_image1(dhd_bus->dhd, nv_image);
nv_image = NULL;
}
/* For Get first block of fw to calculate total_len */
file_exists = ((pfw_path != NULL) && (pfw_path[0] != '\0'));
if (file_exists) {
fw_image = dhd_os_open_image1(dhd_bus->dhd, pfw_path);
if (fw_image == NULL) {
printf("%s: Open fw file failed %s\n", __FUNCTION__, pfw_path);
goto err;
}
}
memptr = fw_memblock = MALLOC(dhd_bus->pub.osh, memblock_size);
if (fw_memblock == NULL) {
DBUSERR(("%s: Failed to allocate memory %d bytes\n", __FUNCTION__,
memblock_size));
goto err;
}
len = dhd_os_get_image_block((char*)memptr, memblock_size, fw_image);
if ((actual_fwlen = check_file(dhd_bus->pub.osh, memptr)) <= 0) {
DBUSERR(("%s: bad firmware format!\n", __FUNCTION__));
goto err;
}
total_len = actual_fwlen + dhd_bus->nvram_len + nvram_words_pad;
dhd_bus->image = MALLOC(dhd_bus->pub.osh, total_len);
dhd_bus->image_len = total_len;
if (dhd_bus->image == NULL) {
DBUSERR(("%s: malloc failed!\n", __FUNCTION__));
goto err;
}
/* Step1: Copy trx header + firmwre */
memptr = fw_memblock;
do {
if (len < 0) {
DBUSERR(("%s: dhd_os_get_image_block failed (%d)\n", __FUNCTION__, len));
bcmerror = BCME_ERROR;
goto err;
}
bcopy(memptr, dhd_bus->image+offset, len);
offset += len;
} while ((len = dhd_os_get_image_block((char*)memptr, memblock_size, fw_image)));
/* Step2: Copy NVRAM + pad */
hdr = (struct trx_header *)dhd_bus->image;
img_offset = SIZEOF_TRX(hdr) + hdr->offsets[TRX_OFFSETS_DLFWLEN_IDX];
bcopy(nv_memblock, (uint8 *)(dhd_bus->image + img_offset),
dhd_bus->nvram_len);
img_offset += dhd_bus->nvram_len;
if (nvram_words_pad) {
bzero(&dhd_bus->image[img_offset], nvram_words_pad);
img_offset += nvram_words_pad;
}
#ifdef BCMTRXV2
/* Step3: Copy DSG/CFG for V2 */
if (ISTRX_V2(hdr) &&
(hdr->offsets[TRX_OFFSETS_DSG_LEN_IDX] ||
hdr->offsets[TRX_OFFSETS_CFG_LEN_IDX])) {
DBUSERR(("%s: fix me\n", __FUNCTION__));
}
#endif /* BCMTRXV2 */
/* Step4: update TRX header for nvram size */
hdr = (struct trx_header *)dhd_bus->image;
hdr->len = htol32(total_len);
/* Pass the actual fw len */
hdr->offsets[TRX_OFFSETS_NVM_LEN_IDX] =
htol32(dhd_bus->nvram_len + nvram_words_pad);
/* Calculate CRC over header */
hdr->crc32 = hndcrc32((uint8 *)&hdr->flag_version,
SIZEOF_TRX(hdr) - OFFSETOF(struct trx_header, flag_version),
CRC32_INIT_VALUE);
/* Calculate CRC over data */
for (i = SIZEOF_TRX(hdr); i < total_len; ++i)
hdr->crc32 = hndcrc32((uint8 *)&dhd_bus->image[i], 1, hdr->crc32);
hdr->crc32 = htol32(hdr->crc32);
bcmerror = DBUS_OK;
err:
if (fw_memblock)
MFREE(dhd_bus->pub.osh, fw_memblock, MAX_NVRAMBUF_SIZE);
if (fw_image)
dhd_os_close_image1(dhd_bus->dhd, fw_image);
if (nv_memblock)
MFREE(dhd_bus->pub.osh, nv_memblock, MAX_NVRAMBUF_SIZE);
if (nv_image)
dhd_os_close_image1(dhd_bus->dhd, nv_image);
return bcmerror;
}
/**
* during driver initialization ('attach') or after PnP 'resume', firmware needs to be loaded into
* the dongle
*/
static int
dbus_do_download(dhd_bus_t *dhd_bus, char *pfw_path, char *pnv_path)
{
int err = DBUS_OK;
err = dbus_get_fw_nvram(dhd_bus, pfw_path, pnv_path);
if (err) {
DBUSERR(("dbus_do_download: fail to get nvram %d\n", err));
return err;
}
if (dhd_bus->drvintf->dlstart && dhd_bus->drvintf->dlrun) {
err = dhd_bus->drvintf->dlstart(dhd_bus->bus_info,
dhd_bus->image, dhd_bus->image_len);
if (err == DBUS_OK) {
err = dhd_bus->drvintf->dlrun(dhd_bus->bus_info);
}
} else
err = DBUS_ERR;
if (dhd_bus->image) {
MFREE(dhd_bus->pub.osh, dhd_bus->image, dhd_bus->image_len);
dhd_bus->image = NULL;
dhd_bus->image_len = 0;
}
return err;
} /* dbus_do_download */
#else
/**
* It is easy for the user to pass one jumbo nvram file to the driver than a set of smaller files.
* The 'jumbo nvram' file format is essentially a set of nvram files. Before commencing firmware
* download, the dongle needs to be probed so that the correct nvram contents within the jumbo nvram
* file is selected.
*/
static int
dbus_jumbo_nvram(dhd_bus_t *dhd_bus)
{
int8 *nvram = NULL;
int nvram_len = 0;
int ret = DBUS_OK;
uint16 boardrev = 0xFFFF;
uint16 boardtype = 0xFFFF;
/* read the otp for boardrev & boardtype
* if boardtype/rev are present in otp
* select nvram data for that boardtype/rev
*/
dbus_otp(dhd_bus, &boardtype, &boardrev);
ret = dbus_select_nvram(dhd_bus, dhd_bus->extdl.vars, dhd_bus->extdl.varslen,
boardtype, boardrev, &nvram, &nvram_len);
if (ret == DBUS_JUMBO_BAD_FORMAT)
return DBUS_ERR_NVRAM;
else if (ret == DBUS_JUMBO_NOMATCH &&
(boardtype != 0xFFFF || boardrev != 0xFFFF)) {
DBUSERR(("No matching NVRAM for boardtype 0x%02x boardrev 0x%02x\n",
boardtype, boardrev));
return DBUS_ERR_NVRAM;
}
dhd_bus->nvram = nvram;
dhd_bus->nvram_len = nvram_len;
return DBUS_OK;
}
/** before commencing fw download, the correct NVRAM image to download has to be picked */
static int
dbus_get_nvram(dhd_bus_t *dhd_bus)
{
int len, i;
struct trx_header *hdr;
int actual_fwlen;
uint32 img_offset = 0;
dhd_bus->nvram_len = 0;
if (dhd_bus->extdl.varslen) {
if (DBUS_OK != dbus_jumbo_nvram(dhd_bus))
return DBUS_ERR_NVRAM;
DBUSERR(("NVRAM %d bytes downloaded\n", dhd_bus->nvram_len));
}
#if defined(BCM_REQUEST_FW)
else if (nonfwnvram) {
dhd_bus->nvram = nonfwnvram;
dhd_bus->nvram_len = nonfwnvramlen;
DBUSERR(("NVRAM %d bytes downloaded\n", dhd_bus->nvram_len));
}
#endif
if (dhd_bus->nvram) {
uint8 nvram_words_pad = 0;
/* Validate the format/length etc of the file */
if ((actual_fwlen = check_file(dhd_bus->pub.osh, dhd_bus->fw)) <= 0) {
DBUSERR(("%s: bad firmware format!\n", __FUNCTION__));
return DBUS_ERR_NVRAM;
}
if (!dhd_bus->nvram_nontxt) {
/* host supplied nvram could be in .txt format
* with all the comments etc...
*/
dhd_bus->nvram_len = process_nvram_vars(dhd_bus->nvram,
dhd_bus->nvram_len);
}
if (dhd_bus->nvram_len % 4)
nvram_words_pad = 4 - dhd_bus->nvram_len % 4;
len = actual_fwlen + dhd_bus->nvram_len + nvram_words_pad;
dhd_bus->image = MALLOC(dhd_bus->pub.osh, len);
dhd_bus->image_len = len;
if (dhd_bus->image == NULL) {
DBUSERR(("%s: malloc failed!\n", __FUNCTION__));
return DBUS_ERR_NVRAM;
}
hdr = (struct trx_header *)dhd_bus->fw;
/* Step1: Copy trx header + firmwre */
img_offset = SIZEOF_TRX(hdr) + hdr->offsets[TRX_OFFSETS_DLFWLEN_IDX];
bcopy(dhd_bus->fw, dhd_bus->image, img_offset);
/* Step2: Copy NVRAM + pad */
bcopy(dhd_bus->nvram, (uint8 *)(dhd_bus->image + img_offset),
dhd_bus->nvram_len);
img_offset += dhd_bus->nvram_len;
if (nvram_words_pad) {
bzero(&dhd_bus->image[img_offset],
nvram_words_pad);
img_offset += nvram_words_pad;
}
#ifdef BCMTRXV2
/* Step3: Copy DSG/CFG for V2 */
if (ISTRX_V2(hdr) &&
(hdr->offsets[TRX_OFFSETS_DSG_LEN_IDX] ||
hdr->offsets[TRX_OFFSETS_CFG_LEN_IDX])) {
bcopy(dhd_bus->fw + SIZEOF_TRX(hdr) +
hdr->offsets[TRX_OFFSETS_DLFWLEN_IDX] +
hdr->offsets[TRX_OFFSETS_NVM_LEN_IDX],
dhd_bus->image + img_offset,
hdr->offsets[TRX_OFFSETS_DSG_LEN_IDX] +
hdr->offsets[TRX_OFFSETS_CFG_LEN_IDX]);
img_offset += hdr->offsets[TRX_OFFSETS_DSG_LEN_IDX] +
hdr->offsets[TRX_OFFSETS_CFG_LEN_IDX];
}
#endif /* BCMTRXV2 */
/* Step4: update TRX header for nvram size */
hdr = (struct trx_header *)dhd_bus->image;
hdr->len = htol32(len);
/* Pass the actual fw len */
hdr->offsets[TRX_OFFSETS_NVM_LEN_IDX] =
htol32(dhd_bus->nvram_len + nvram_words_pad);
/* Calculate CRC over header */
hdr->crc32 = hndcrc32((uint8 *)&hdr->flag_version,
SIZEOF_TRX(hdr) - OFFSETOF(struct trx_header, flag_version),
CRC32_INIT_VALUE);
/* Calculate CRC over data */
for (i = SIZEOF_TRX(hdr); i < len; ++i)
hdr->crc32 = hndcrc32((uint8 *)&dhd_bus->image[i], 1, hdr->crc32);
hdr->crc32 = htol32(hdr->crc32);
} else {
dhd_bus->image = dhd_bus->fw;
dhd_bus->image_len = (uint32)dhd_bus->fwlen;
}
return DBUS_OK;
} /* dbus_get_nvram */
/**
* during driver initialization ('attach') or after PnP 'resume', firmware needs to be loaded into
* the dongle
*/
static int
dbus_do_download(dhd_bus_t *dhd_bus)
{
int err = DBUS_OK;
#ifndef BCM_REQUEST_FW
int decomp_override = 0;
#endif
#ifdef BCM_REQUEST_FW
uint16 boardrev = 0xFFFF, boardtype = 0xFFFF;
int8 *temp_nvram;
int temp_len;
#endif
#if defined(BCM_REQUEST_FW)
dhd_bus->firmware = dbus_get_fw_nvfile(dhd_bus->pub.attrib.devid,
dhd_bus->pub.attrib.chiprev, &dhd_bus->fw, &dhd_bus->fwlen,
DBUS_FIRMWARE, 0, 0);
if (!dhd_bus->firmware)
return DBUS_ERR;
#endif
dhd_bus->image = dhd_bus->fw;
dhd_bus->image_len = (uint32)dhd_bus->fwlen;
#ifndef BCM_REQUEST_FW
if (UNZIP_ENAB(dhd_bus) && !decomp_override) {
err = dbus_zlib_decomp(dhd_bus);
if (err) {
DBUSERR(("dbus_attach: fw decompress fail %d\n", err));
return err;
}
}
#endif
#if defined(BCM_REQUEST_FW)
/* check if firmware is appended with nvram file */
err = dbus_otp(dhd_bus, &boardtype, &boardrev);
/* check if nvram is provided as separte file */
nonfwnvram = NULL;
nonfwnvramlen = 0;
dhd_bus->nvfile = dbus_get_fw_nvfile(dhd_bus->pub.attrib.devid,
dhd_bus->pub.attrib.chiprev, (void *)&temp_nvram, &temp_len,
DBUS_NVFILE, boardtype, boardrev);
if (dhd_bus->nvfile) {
int8 *tmp = MALLOC(dhd_bus->pub.osh, temp_len);
if (tmp) {
bcopy(temp_nvram, tmp, temp_len);
nonfwnvram = tmp;
nonfwnvramlen = temp_len;
} else {
err = DBUS_ERR;
goto fail;
}
}
#endif /* defined(BCM_REQUEST_FW) */
err = dbus_get_nvram(dhd_bus);
if (err) {
DBUSERR(("dbus_do_download: fail to get nvram %d\n", err));
return err;
}
if (dhd_bus->drvintf->dlstart && dhd_bus->drvintf->dlrun) {
err = dhd_bus->drvintf->dlstart(dhd_bus->bus_info,
dhd_bus->image, dhd_bus->image_len);
if (err == DBUS_OK)
err = dhd_bus->drvintf->dlrun(dhd_bus->bus_info);
} else
err = DBUS_ERR;
if (dhd_bus->nvram) {
MFREE(dhd_bus->pub.osh, dhd_bus->image, dhd_bus->image_len);
dhd_bus->image = dhd_bus->fw;
dhd_bus->image_len = (uint32)dhd_bus->fwlen;
}
#ifndef BCM_REQUEST_FW
if (UNZIP_ENAB(dhd_bus) && (!decomp_override) && dhd_bus->orig_fw) {
MFREE(dhd_bus->pub.osh, dhd_bus->fw, dhd_bus->decomp_memsize);
dhd_bus->image = dhd_bus->fw = dhd_bus->orig_fw;
dhd_bus->image_len = dhd_bus->fwlen = dhd_bus->origfw_len;
}
#endif
#if defined(BCM_REQUEST_FW)
fail:
if (dhd_bus->firmware) {
dbus_release_fw_nvfile(dhd_bus->firmware);
dhd_bus->firmware = NULL;
}
if (dhd_bus->nvfile) {
dbus_release_fw_nvfile(dhd_bus->nvfile);
dhd_bus->nvfile = NULL;
}
if (nonfwnvram) {
MFREE(dhd_bus->pub.osh, nonfwnvram, nonfwnvramlen);
nonfwnvram = NULL;
nonfwnvramlen = 0;
}
#endif
return err;
} /* dbus_do_download */
#endif /* EXTERNAL_FW_PATH */
#endif
/** required for DBUS deregistration */
static void
dbus_disconnect(void *handle)
{
DBUSTRACE(("%s\n", __FUNCTION__));
if (disconnect_cb)
disconnect_cb(disc_arg);
}
/**
* This function is called when the sent irb times out without a tx response status.
* DBUS adds reliability by resending timed out IRBs DBUS_TX_RETRY_LIMIT times.
*/
static void
dbus_if_send_irb_timeout(void *handle, dbus_irb_tx_t *txirb)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) handle;
if ((dhd_bus == NULL) || (dhd_bus->drvintf == NULL) || (txirb == NULL)) {
return;
}
DBUSTRACE(("%s\n", __FUNCTION__));
return;
} /* dbus_if_send_irb_timeout */
/**
* When lower DBUS level signals that a send IRB completed, either successful or not, the higher
* level (e.g. dhd_linux.c) has to be notified, and transmit flow control has to be evaluated.
*/
static void
dbus_if_send_irb_complete(void *handle, dbus_irb_tx_t *txirb, int status)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) handle;
int txirb_pending;
struct exec_parms args;
void *pktinfo;
if ((dhd_bus == NULL) || (txirb == NULL)) {
return;
}
DBUSTRACE(("%s: status = %d\n", __FUNCTION__, status));
dbus_tx_timer_stop(dhd_bus);
/* re-queue BEFORE calling send_complete which will assume that this irb
is now available.
*/
pktinfo = txirb->info;
bzero(txirb, sizeof(dbus_irb_tx_t));
args.qenq.q = dhd_bus->tx_q;
args.qenq.b = (dbus_irb_t *) txirb;
EXEC_TXLOCK(dhd_bus, q_enq_exec, &args);
if (dhd_bus->pub.busstate != DBUS_STATE_DOWN) {
if ((status == DBUS_OK) || (status == DBUS_ERR_NODEVICE)) {
if (dhd_bus->cbs && dhd_bus->cbs->send_complete)
dhd_bus->cbs->send_complete(dhd_bus->cbarg, pktinfo,
status);
if (status == DBUS_OK) {
txirb_pending = dhd_bus->pub.ntxq - dhd_bus->tx_q->cnt;
if (txirb_pending)
dbus_tx_timer_start(dhd_bus, DBUS_TX_TIMEOUT_INTERVAL);
if ((txirb_pending < dhd_bus->tx_low_watermark) &&
dhd_bus->txoff && !dhd_bus->txoverride) {
dbus_flowctrl_tx(dhd_bus, OFF);
}
}
} else {
DBUSERR(("%s: %d WARNING freeing orphan pkt %p\n", __FUNCTION__, __LINE__,
pktinfo));
#if defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_TXNOCOPY) || defined(BCM_RPC_TOC)
if (pktinfo)
if (dhd_bus->cbs && dhd_bus->cbs->send_complete)
dhd_bus->cbs->send_complete(dhd_bus->cbarg, pktinfo,
status);
#else
dbus_if_pktfree(dhd_bus, (void*)pktinfo, TRUE);
#endif /* defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_TXNOCOPY) || defined(BCM_RPC_TOC) */
}
} else {
DBUSERR(("%s: %d WARNING freeing orphan pkt %p\n", __FUNCTION__, __LINE__,
pktinfo));
#if defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_TXNOCOPY) || defined(BCM_RPC_TOC)
if (pktinfo)
if (dhd_bus->cbs && dhd_bus->cbs->send_complete)
dhd_bus->cbs->send_complete(dhd_bus->cbarg, pktinfo,
status);
#else
dbus_if_pktfree(dhd_bus, (void*)pktinfo, TRUE);
#endif /* defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_TXNOCOPY) defined(BCM_RPC_TOC) */
}
} /* dbus_if_send_irb_complete */
/**
* When lower DBUS level signals that a receive IRB completed, either successful or not, the higher
* level (e.g. dhd_linux.c) has to be notified, and fresh free receive IRBs may have to be given
* to lower levels.
*/
static void
dbus_if_recv_irb_complete(void *handle, dbus_irb_rx_t *rxirb, int status)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) handle;
int rxirb_pending;
struct exec_parms args;
if ((dhd_bus == NULL) || (rxirb == NULL)) {
return;
}
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus->pub.busstate != DBUS_STATE_DOWN &&
dhd_bus->pub.busstate != DBUS_STATE_SLEEP) {
if (status == DBUS_OK) {
if ((rxirb->buf != NULL) && (rxirb->actual_len > 0)) {
#ifdef DBUS_USB_LOOPBACK
if (is_loopback_pkt(rxirb->buf)) {
matches_loopback_pkt(rxirb->buf);
} else
#endif
if (dhd_bus->cbs && dhd_bus->cbs->recv_buf) {
dhd_bus->cbs->recv_buf(dhd_bus->cbarg, rxirb->buf,
rxirb->actual_len);
}
} else if (rxirb->pkt != NULL) {
if (dhd_bus->cbs && dhd_bus->cbs->recv_pkt)
dhd_bus->cbs->recv_pkt(dhd_bus->cbarg, rxirb->pkt);
} else {
ASSERT(0); /* Should not happen */
}
rxirb_pending = dhd_bus->pub.nrxq - dhd_bus->rx_q->cnt - 1;
if ((rxirb_pending <= dhd_bus->rx_low_watermark) &&
!dhd_bus->rxoff) {
DBUSTRACE(("Low watermark so submit more %d <= %d \n",
dhd_bus->rx_low_watermark, rxirb_pending));
dbus_rxirbs_fill(dhd_bus);
} else if (dhd_bus->rxoff)
DBUSTRACE(("rx flow controlled. not filling more. cut_rxq=%d\n",
dhd_bus->rx_q->cnt));
} else if (status == DBUS_ERR_NODEVICE) {
DBUSERR(("%s: %d status = %d, buf %p\n", __FUNCTION__, __LINE__, status,
rxirb->buf));
#if defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_RXNOCOPY)
if (rxirb->buf) {
PKTFRMNATIVE(dhd_bus->pub.osh, rxirb->buf);
PKTFREE(dhd_bus->pub.osh, rxirb->buf, FALSE);
}
#endif /* BCM_RPC_NOCOPY || BCM_RPC_TXNOCOPY || BCM_RPC_TOC */
} else {
if (status != DBUS_ERR_RXZLP)
DBUSERR(("%s: %d status = %d, buf %p\n", __FUNCTION__, __LINE__,
status, rxirb->buf));
#if defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_RXNOCOPY)
if (rxirb->buf) {
PKTFRMNATIVE(dhd_bus->pub.osh, rxirb->buf);
PKTFREE(dhd_bus->pub.osh, rxirb->buf, FALSE);
}
#endif /* BCM_RPC_NOCOPY || BCM_RPC_TXNOCOPY || BCM_RPC_TOC */
}
} else {
DBUSTRACE(("%s: DBUS down, ignoring recv callback. buf %p\n", __FUNCTION__,
rxirb->buf));
#if defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_RXNOCOPY)
if (rxirb->buf) {
PKTFRMNATIVE(dhd_bus->pub.osh, rxirb->buf);
PKTFREE(dhd_bus->pub.osh, rxirb->buf, FALSE);
}
#endif /* BCM_RPC_NOCOPY || BCM_RPC_TXNOCOPY || BCM_RPC_TOC */
}
if (dhd_bus->rx_q != NULL) {
bzero(rxirb, sizeof(dbus_irb_rx_t));
args.qenq.q = dhd_bus->rx_q;
args.qenq.b = (dbus_irb_t *) rxirb;
EXEC_RXLOCK(dhd_bus, q_enq_exec, &args);
} else
MFREE(dhd_bus->pub.osh, rxirb, sizeof(dbus_irb_tx_t));
} /* dbus_if_recv_irb_complete */
/**
* Accumulate errors signaled by lower DBUS levels and signal them to higher (e.g. dhd_linux.c)
* level.
*/
static void
dbus_if_errhandler(void *handle, int err)
{
dhd_bus_t *dhd_bus = handle;
uint32 mask = 0;
if (dhd_bus == NULL)
return;
switch (err) {
case DBUS_ERR_TXFAIL:
dhd_bus->pub.stats.tx_errors++;
mask |= ERR_CBMASK_TXFAIL;
break;
case DBUS_ERR_TXDROP:
dhd_bus->pub.stats.tx_dropped++;
mask |= ERR_CBMASK_TXFAIL;
break;
case DBUS_ERR_RXFAIL:
dhd_bus->pub.stats.rx_errors++;
mask |= ERR_CBMASK_RXFAIL;
break;
case DBUS_ERR_RXDROP:
dhd_bus->pub.stats.rx_dropped++;
mask |= ERR_CBMASK_RXFAIL;
break;
default:
break;
}
if (dhd_bus->cbs && dhd_bus->cbs->errhandler && (dhd_bus->errmask & mask))
dhd_bus->cbs->errhandler(dhd_bus->cbarg, err);
}
/**
* When lower DBUS level signals control IRB completed, higher level (e.g. dhd_linux.c) has to be
* notified.
*/
static void
dbus_if_ctl_complete(void *handle, int type, int status)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) handle;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus == NULL) {
DBUSERR(("%s: dhd_bus is NULL\n", __FUNCTION__));
return;
}
if (dhd_bus->pub.busstate != DBUS_STATE_DOWN) {
if (dhd_bus->cbs && dhd_bus->cbs->ctl_complete)
dhd_bus->cbs->ctl_complete(dhd_bus->cbarg, type, status);
}
}
/**
* Rx related functionality (flow control, posting of free IRBs to rx queue) is dependent upon the
* bus state. When lower DBUS level signals a change in the interface state, take appropriate action
* and forward the signaling to the higher (e.g. dhd_linux.c) level.
*/
static void
dbus_if_state_change(void *handle, int state)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) handle;
int old_state;
if (dhd_bus == NULL)
return;
if (dhd_bus->pub.busstate == state)
return;
old_state = dhd_bus->pub.busstate;
if (state == DBUS_STATE_DISCONNECT) {
DBUSERR(("DBUS disconnected\n"));
}
/* Ignore USB SUSPEND while not up yet */
if (state == DBUS_STATE_SLEEP && old_state != DBUS_STATE_UP)
return;
DBUSTRACE(("dbus state change from %d to to %d\n", old_state, state));
/* Don't update state if it's PnP firmware re-download */
if (state != DBUS_STATE_PNP_FWDL)
dhd_bus->pub.busstate = state;
else
dbus_flowctrl_rx(handle, FALSE);
if (state == DBUS_STATE_SLEEP)
dbus_flowctrl_rx(handle, TRUE);
if (state == DBUS_STATE_UP) {
dbus_rxirbs_fill(dhd_bus);
dbus_flowctrl_rx(handle, FALSE);
}
if (dhd_bus->cbs && dhd_bus->cbs->state_change)
dhd_bus->cbs->state_change(dhd_bus->cbarg, state);
}
/** Forward request for packet from lower DBUS layer to higher layer (e.g. dhd_linux.c) */
static void *
dbus_if_pktget(void *handle, uint len, bool send)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) handle;
void *p = NULL;
if (dhd_bus == NULL)
return NULL;
if (dhd_bus->cbs && dhd_bus->cbs->pktget)
p = dhd_bus->cbs->pktget(dhd_bus->cbarg, len, send);
else
ASSERT(0);
return p;
}
/** Forward request to free packet from lower DBUS layer to higher layer (e.g. dhd_linux.c) */
static void
dbus_if_pktfree(void *handle, void *p, bool send)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) handle;
if (dhd_bus == NULL)
return;
if (dhd_bus->cbs && dhd_bus->cbs->pktfree)
dhd_bus->cbs->pktfree(dhd_bus->cbarg, p, send);
else
ASSERT(0);
}
/** Lower DBUS level requests either a send or receive IRB */
static struct dbus_irb*
dbus_if_getirb(void *cbarg, bool send)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) cbarg;
struct exec_parms args;
struct dbus_irb *irb;
if ((dhd_bus == NULL) || (dhd_bus->pub.busstate != DBUS_STATE_UP))
return NULL;
if (send == TRUE) {
args.qdeq.q = dhd_bus->tx_q;
irb = EXEC_TXLOCK(dhd_bus, q_deq_exec, &args);
} else {
args.qdeq.q = dhd_bus->rx_q;
irb = EXEC_RXLOCK(dhd_bus, q_deq_exec, &args);
}
return irb;
}
/**
* Called as part of DBUS bus registration. Calls back into higher level (e.g. dhd_linux.c) probe
* function.
*/
static void *
dbus_probe(void *arg, const char *desc, uint32 bustype, uint16 bus_no,
uint16 slot, uint32 hdrlen)
{
DBUSTRACE(("%s\n", __FUNCTION__));
if (probe_cb) {
disc_arg = probe_cb(probe_arg, desc, bustype, bus_no, slot, hdrlen);
return disc_arg;
}
return (void *)DBUS_ERR;
}
/**
* As part of initialization, higher level (e.g. dhd_linux.c) requests DBUS to prepare for
* action.
*/
int
dhd_bus_register(void)
{
int err;
DBUSTRACE(("%s: Enter\n", __FUNCTION__));
probe_cb = dhd_dbus_probe_cb;
disconnect_cb = dhd_dbus_disconnect_cb;
probe_arg = NULL;
err = dbus_bus_register(0xa5c, 0x48f, dbus_probe, /* call lower DBUS level register function */
dbus_disconnect, NULL, &g_busintf, NULL, NULL);
/* Device not detected */
if (err == DBUS_ERR_NODEVICE)
err = DBUS_OK;
return err;
}
dhd_pub_t *g_pub = NULL;
void
dhd_bus_unregister(void)
{
int ret;
DBUSTRACE(("%s\n", __FUNCTION__));
DHD_MUTEX_LOCK();
if (g_pub) {
g_pub->dhd_remove = TRUE;
if (!g_pub->bus) {
dhd_dbus_disconnect_cb(g_pub->bus);
}
}
probe_cb = NULL;
DHD_MUTEX_UNLOCK();
ret = dbus_bus_deregister();
disconnect_cb = NULL;
probe_arg = NULL;
}
/** As part of initialization, data structures have to be allocated and initialized */
dhd_bus_t *
dbus_attach(osl_t *osh, int rxsize, int nrxq, int ntxq, dhd_pub_t *pub,
dbus_callbacks_t *cbs, dbus_extdl_t *extdl, struct shared_info *sh)
{
dhd_bus_t *dhd_bus;
int err;
if ((g_busintf == NULL) || (g_busintf->attach == NULL) || (cbs == NULL))
return NULL;
DBUSTRACE(("%s\n", __FUNCTION__));
if ((nrxq <= 0) || (ntxq <= 0))
return NULL;
dhd_bus = MALLOC(osh, sizeof(dhd_bus_t));
if (dhd_bus == NULL) {
DBUSERR(("%s: malloc failed %zu\n", __FUNCTION__, sizeof(dhd_bus_t)));
return NULL;
}
bzero(dhd_bus, sizeof(dhd_bus_t));
/* BUS-specific driver interface (at a lower DBUS level) */
dhd_bus->drvintf = g_busintf;
dhd_bus->cbarg = pub;
dhd_bus->cbs = cbs;
dhd_bus->pub.sh = sh;
dhd_bus->pub.osh = osh;
dhd_bus->pub.rxsize = rxsize;
dhd_bus->pub.nrxq = nrxq;
dhd_bus->rx_low_watermark = nrxq / 2; /* keep enough posted rx urbs */
dhd_bus->pub.ntxq = ntxq;
dhd_bus->tx_low_watermark = ntxq / 4; /* flow control when too many tx urbs posted */
dhd_bus->tx_q = MALLOC(osh, sizeof(dbus_irbq_t));
if (dhd_bus->tx_q == NULL)
goto error;
else {
bzero(dhd_bus->tx_q, sizeof(dbus_irbq_t));
err = dbus_irbq_init(dhd_bus, dhd_bus->tx_q, ntxq, sizeof(dbus_irb_tx_t));
if (err != DBUS_OK)
goto error;
}
dhd_bus->rx_q = MALLOC(osh, sizeof(dbus_irbq_t));
if (dhd_bus->rx_q == NULL)
goto error;
else {
bzero(dhd_bus->rx_q, sizeof(dbus_irbq_t));
err = dbus_irbq_init(dhd_bus, dhd_bus->rx_q, nrxq, sizeof(dbus_irb_rx_t));
if (err != DBUS_OK)
goto error;
}
dhd_bus->bus_info = (void *)g_busintf->attach(&dhd_bus->pub,
dhd_bus, &dbus_intf_cbs);
if (dhd_bus->bus_info == NULL)
goto error;
dbus_tx_timer_init(dhd_bus);
#if defined(BCM_REQUEST_FW)
/* Need to copy external image for re-download */
if (extdl && extdl->fw && (extdl->fwlen > 0)) {
dhd_bus->extdl.fw = MALLOC(osh, extdl->fwlen);
if (dhd_bus->extdl.fw) {
bcopy(extdl->fw, dhd_bus->extdl.fw, extdl->fwlen);
dhd_bus->extdl.fwlen = extdl->fwlen;
}
}
if (extdl && extdl->vars && (extdl->varslen > 0)) {
dhd_bus->extdl.vars = MALLOC(osh, extdl->varslen);
if (dhd_bus->extdl.vars) {
bcopy(extdl->vars, dhd_bus->extdl.vars, extdl->varslen);
dhd_bus->extdl.varslen = extdl->varslen;
}
}
#endif
return (dhd_bus_t *)dhd_bus;
error:
DBUSERR(("%s: Failed\n", __FUNCTION__));
dbus_detach(dhd_bus);
return NULL;
} /* dbus_attach */
void
dbus_detach(dhd_bus_t *pub)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
osl_t *osh;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus == NULL)
return;
dbus_tx_timer_stop(dhd_bus);
osh = pub->pub.osh;
if (dhd_bus->drvintf && dhd_bus->drvintf->detach)
dhd_bus->drvintf->detach((dbus_pub_t *)dhd_bus, dhd_bus->bus_info);
if (dhd_bus->tx_q) {
dbus_irbq_deinit(dhd_bus, dhd_bus->tx_q, sizeof(dbus_irb_tx_t));
MFREE(osh, dhd_bus->tx_q, sizeof(dbus_irbq_t));
dhd_bus->tx_q = NULL;
}
if (dhd_bus->rx_q) {
dbus_irbq_deinit(dhd_bus, dhd_bus->rx_q, sizeof(dbus_irb_rx_t));
MFREE(osh, dhd_bus->rx_q, sizeof(dbus_irbq_t));
dhd_bus->rx_q = NULL;
}
if (dhd_bus->extdl.fw && (dhd_bus->extdl.fwlen > 0)) {
MFREE(osh, dhd_bus->extdl.fw, dhd_bus->extdl.fwlen);
dhd_bus->extdl.fw = NULL;
dhd_bus->extdl.fwlen = 0;
}
if (dhd_bus->extdl.vars && (dhd_bus->extdl.varslen > 0)) {
MFREE(osh, dhd_bus->extdl.vars, dhd_bus->extdl.varslen);
dhd_bus->extdl.vars = NULL;
dhd_bus->extdl.varslen = 0;
}
MFREE(osh, dhd_bus, sizeof(dhd_bus_t));
} /* dbus_detach */
int dbus_dlneeded(dhd_bus_t *pub)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int dlneeded = DBUS_ERR;
if (!dhd_bus) {
DBUSERR(("%s: dhd_bus is NULL\n", __FUNCTION__));
return DBUS_ERR;
}
DBUSTRACE(("%s: state %d\n", __FUNCTION__, dhd_bus->pub.busstate));
if (dhd_bus->drvintf->dlneeded) {
dlneeded = dhd_bus->drvintf->dlneeded(dhd_bus->bus_info);
}
printf("%s: dlneeded=%d\n", __FUNCTION__, dlneeded);
/* dlneeded > 0: need to download
* dlneeded = 0: downloaded
* dlneeded < 0: bus error*/
return dlneeded;
}
#if defined(BCM_REQUEST_FW)
int dbus_download_firmware(dhd_bus_t *pub, char *pfw_path, char *pnv_path)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int err = DBUS_OK;
if (!dhd_bus) {
DBUSERR(("%s: dhd_bus is NULL\n", __FUNCTION__));
return DBUS_ERR;
}
DBUSTRACE(("%s: state %d\n", __FUNCTION__, dhd_bus->pub.busstate));
dhd_bus->pub.busstate = DBUS_STATE_DL_PENDING;
#ifdef EXTERNAL_FW_PATH
err = dbus_do_download(dhd_bus, pfw_path, pnv_path);
#else
err = dbus_do_download(dhd_bus);
#endif /* EXTERNAL_FW_PATH */
if (err == DBUS_OK) {
dhd_bus->pub.busstate = DBUS_STATE_DL_DONE;
} else {
DBUSERR(("%s: download failed (%d)\n", __FUNCTION__, err));
}
return err;
}
#endif
/**
* higher layer requests us to 'up' the interface to the dongle. Prerequisite is that firmware (not
* bootloader) must be active in the dongle.
*/
int
dbus_up(struct dhd_bus *pub)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int err = DBUS_OK;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus == NULL) {
DBUSERR(("%s: dhd_bus is NULL\n", __FUNCTION__));
return DBUS_ERR;
}
if ((dhd_bus->pub.busstate == DBUS_STATE_DL_DONE) ||
(dhd_bus->pub.busstate == DBUS_STATE_DOWN) ||
(dhd_bus->pub.busstate == DBUS_STATE_SLEEP)) {
if (dhd_bus->drvintf && dhd_bus->drvintf->up) {
err = dhd_bus->drvintf->up(dhd_bus->bus_info);
if (err == DBUS_OK) {
dbus_rxirbs_fill(dhd_bus);
}
}
} else
err = DBUS_ERR;
return err;
}
/** higher layer requests us to 'down' the interface to the dongle. */
int
dbus_down(dbus_pub_t *pub)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus == NULL)
return DBUS_ERR;
dbus_tx_timer_stop(dhd_bus);
if (dhd_bus->pub.busstate == DBUS_STATE_UP ||
dhd_bus->pub.busstate == DBUS_STATE_SLEEP) {
if (dhd_bus->drvintf && dhd_bus->drvintf->down)
return dhd_bus->drvintf->down(dhd_bus->bus_info);
}
return DBUS_ERR;
}
int
dbus_shutdown(dbus_pub_t *pub)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus == NULL)
return DBUS_ERR;
if (dhd_bus->drvintf && dhd_bus->drvintf->shutdown)
return dhd_bus->drvintf->shutdown(dhd_bus->bus_info);
return DBUS_OK;
}
int
dbus_stop(struct dhd_bus *pub)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus == NULL)
return DBUS_ERR;
if (dhd_bus->pub.busstate == DBUS_STATE_UP ||
dhd_bus->pub.busstate == DBUS_STATE_SLEEP) {
if (dhd_bus->drvintf && dhd_bus->drvintf->stop)
return dhd_bus->drvintf->stop(dhd_bus->bus_info);
}
return DBUS_ERR;
}
int dbus_send_txdata(dbus_pub_t *dbus, void *pktbuf)
{
return dbus_send_pkt(dbus, pktbuf, pktbuf /* pktinfo */);
}
int
dbus_send_buf(dbus_pub_t *pub, uint8 *buf, int len, void *info)
{
return dbus_send_irb(pub, buf, len, NULL, info);
}
int
dbus_send_pkt(dbus_pub_t *pub, void *pkt, void *info)
{
return dbus_send_irb(pub, NULL, 0, pkt, info);
}
int
dbus_send_ctl(struct dhd_bus *pub, uint8 *buf, int len)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
if (dhd_bus == NULL) {
DBUSERR(("%s: dhd_bus is NULL\n", __FUNCTION__));
return DBUS_ERR;
}
if (dhd_bus->pub.busstate == DBUS_STATE_UP ||
dhd_bus->pub.busstate == DBUS_STATE_SLEEP) {
if (dhd_bus->drvintf && dhd_bus->drvintf->send_ctl)
return dhd_bus->drvintf->send_ctl(dhd_bus->bus_info, buf, len);
} else {
DBUSERR(("%s: bustate=%d\n", __FUNCTION__, dhd_bus->pub.busstate));
}
return DBUS_ERR;
}
int
dbus_recv_ctl(struct dhd_bus *pub, uint8 *buf, int len)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
if ((dhd_bus == NULL) || (buf == NULL))
return DBUS_ERR;
if (dhd_bus->pub.busstate == DBUS_STATE_UP ||
dhd_bus->pub.busstate == DBUS_STATE_SLEEP) {
if (dhd_bus->drvintf && dhd_bus->drvintf->recv_ctl)
return dhd_bus->drvintf->recv_ctl(dhd_bus->bus_info, buf, len);
}
return DBUS_ERR;
}
/** Only called via RPC (Dec 2012) */
int
dbus_recv_bulk(dbus_pub_t *pub, uint32 ep_idx)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
dbus_irb_rx_t *rxirb;
struct exec_parms args;
int status;
if (dhd_bus == NULL)
return DBUS_ERR;
args.qdeq.q = dhd_bus->rx_q;
if (dhd_bus->pub.busstate == DBUS_STATE_UP) {
if (dhd_bus->drvintf && dhd_bus->drvintf->recv_irb_from_ep) {
if ((rxirb = (EXEC_RXLOCK(dhd_bus, q_deq_exec, &args))) != NULL) {
status = dhd_bus->drvintf->recv_irb_from_ep(dhd_bus->bus_info,
rxirb, ep_idx);
if (status == DBUS_ERR_RXDROP) {
bzero(rxirb, sizeof(dbus_irb_rx_t));
args.qenq.q = dhd_bus->rx_q;
args.qenq.b = (dbus_irb_t *) rxirb;
EXEC_RXLOCK(dhd_bus, q_enq_exec, &args);
}
}
}
}
return DBUS_ERR;
}
/** only called by dhd_cdc.c (Dec 2012) */
int
dbus_poll_intr(dbus_pub_t *pub)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int status = DBUS_ERR;
if (dhd_bus == NULL)
return DBUS_ERR;
if (dhd_bus->pub.busstate == DBUS_STATE_UP) {
if (dhd_bus->drvintf && dhd_bus->drvintf->recv_irb_from_ep) {
status = dhd_bus->drvintf->recv_irb_from_ep(dhd_bus->bus_info,
NULL, 0xff);
}
}
return status;
}
/** called by nobody (Dec 2012) */
void *
dbus_pktget(dbus_pub_t *pub, int len)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
if ((dhd_bus == NULL) || (len < 0))
return NULL;
return PKTGET(dhd_bus->pub.osh, len, TRUE);
}
/** called by nobody (Dec 2012) */
void
dbus_pktfree(dbus_pub_t *pub, void* pkt)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
if ((dhd_bus == NULL) || (pkt == NULL))
return;
PKTFREE(dhd_bus->pub.osh, pkt, TRUE);
}
/** called by nobody (Dec 2012) */
int
dbus_get_stats(dbus_pub_t *pub, dbus_stats_t *stats)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
if ((dhd_bus == NULL) || (stats == NULL))
return DBUS_ERR;
bcopy(&dhd_bus->pub.stats, stats, sizeof(dbus_stats_t));
return DBUS_OK;
}
int
dbus_get_attrib(dhd_bus_t *pub, dbus_attrib_t *attrib)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int err = DBUS_ERR;
if ((dhd_bus == NULL) || (attrib == NULL))
return DBUS_ERR;
if (dhd_bus->drvintf && dhd_bus->drvintf->get_attrib) {
err = dhd_bus->drvintf->get_attrib(dhd_bus->bus_info,
&dhd_bus->pub.attrib);
}
bcopy(&dhd_bus->pub.attrib, attrib, sizeof(dbus_attrib_t));
return err;
}
int
dbus_get_device_speed(dbus_pub_t *pub)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
if (dhd_bus == NULL)
return INVALID_SPEED;
return (dhd_bus->pub.device_speed);
}
int
dbus_set_config(dbus_pub_t *pub, dbus_config_t *config)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int err = DBUS_ERR;
if ((dhd_bus == NULL) || (config == NULL))
return DBUS_ERR;
if (dhd_bus->drvintf && dhd_bus->drvintf->set_config) {
err = dhd_bus->drvintf->set_config(dhd_bus->bus_info,
config);
if ((config->config_id == DBUS_CONFIG_ID_AGGR_LIMIT) &&
(!err) &&
(dhd_bus->pub.busstate == DBUS_STATE_UP)) {
dbus_rxirbs_fill(dhd_bus);
}
}
return err;
}
int
dbus_get_config(dbus_pub_t *pub, dbus_config_t *config)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int err = DBUS_ERR;
if ((dhd_bus == NULL) || (config == NULL))
return DBUS_ERR;
if (dhd_bus->drvintf && dhd_bus->drvintf->get_config) {
err = dhd_bus->drvintf->get_config(dhd_bus->bus_info,
config);
}
return err;
}
int
dbus_set_errmask(dbus_pub_t *pub, uint32 mask)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int err = DBUS_OK;
if (dhd_bus == NULL)
return DBUS_ERR;
dhd_bus->errmask = mask;
return err;
}
int
dbus_pnp_resume(dbus_pub_t *pub, int *fw_reload)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int err = DBUS_ERR;
bool fwdl = FALSE;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus == NULL)
return DBUS_ERR;
if (dhd_bus->pub.busstate == DBUS_STATE_UP) {
return DBUS_OK;
}
if (dhd_bus->drvintf->pnp) {
err = dhd_bus->drvintf->pnp(dhd_bus->bus_info,
DBUS_PNP_RESUME);
}
if (dhd_bus->drvintf->recv_needed) {
if (dhd_bus->drvintf->recv_needed(dhd_bus->bus_info)) {
/* Refill after sleep/hibernate */
dbus_rxirbs_fill(dhd_bus);
}
}
if (fw_reload)
*fw_reload = fwdl;
return err;
} /* dbus_pnp_resume */
int
dbus_pnp_sleep(dbus_pub_t *pub)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int err = DBUS_ERR;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus == NULL)
return DBUS_ERR;
dbus_tx_timer_stop(dhd_bus);
if (dhd_bus->drvintf && dhd_bus->drvintf->pnp) {
err = dhd_bus->drvintf->pnp(dhd_bus->bus_info,
DBUS_PNP_SLEEP);
}
return err;
}
int
dbus_pnp_disconnect(dbus_pub_t *pub)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) pub;
int err = DBUS_ERR;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus == NULL)
return DBUS_ERR;
dbus_tx_timer_stop(dhd_bus);
if (dhd_bus->drvintf && dhd_bus->drvintf->pnp) {
err = dhd_bus->drvintf->pnp(dhd_bus->bus_info,
DBUS_PNP_DISCONNECT);
}
return err;
}
int
dhd_bus_iovar_op(dhd_pub_t *dhdp, const char *name,
void *params, int plen, void *arg, int len, bool set)
{
dhd_bus_t *dhd_bus = (dhd_bus_t *) dhdp->bus;
int err = DBUS_ERR;
DBUSTRACE(("%s\n", __FUNCTION__));
if (dhd_bus == NULL)
return DBUS_ERR;
if (dhd_bus->drvintf && dhd_bus->drvintf->iovar_op) {
err = dhd_bus->drvintf->iovar_op(dhd_bus->bus_info,
name, params, plen, arg, len, set);
}
return err;
}
void *
dhd_dbus_txq(const dbus_pub_t *pub)
{
return NULL;
}
uint
dhd_dbus_hdrlen(const dbus_pub_t *pub)
{
return 0;
}
void *
dbus_get_devinfo(dbus_pub_t *pub)
{
return pub->dev_info;
}
#if defined(BCM_REQUEST_FW) && !defined(EXTERNAL_FW_PATH)
static int
dbus_otp(dhd_bus_t *dhd_bus, uint16 *boardtype, uint16 *boardrev)
{
uint32 value = 0;
uint8 *cis;
uint16 *otpinfo;
uint32 i;
bool standard_cis = TRUE;
uint8 tup, tlen;
bool btype_present = FALSE;
bool brev_present = FALSE;
int ret;
int devid;
uint16 btype = 0;
uint16 brev = 0;
uint32 otp_size = 0, otp_addr = 0, otp_sw_rgn = 0;
if (dhd_bus == NULL || dhd_bus->drvintf == NULL ||
dhd_bus->drvintf->readreg == NULL)
return DBUS_ERR;
devid = dhd_bus->pub.attrib.devid;
if ((devid == BCM43234_CHIP_ID) || (devid == BCM43235_CHIP_ID) ||
(devid == BCM43236_CHIP_ID)) {
otp_size = BCM_OTP_SIZE_43236;
otp_sw_rgn = BCM_OTP_SW_RGN_43236;
otp_addr = BCM_OTP_ADDR_43236;
} else {
return DBUS_ERR_NVRAM;
}
cis = MALLOC(dhd_bus->pub.osh, otp_size * 2);
if (cis == NULL)
return DBUS_ERR;
otpinfo = (uint16 *) cis;
for (i = 0; i < otp_size; i++) {
ret = dhd_bus->drvintf->readreg(dhd_bus->bus_info,
otp_addr + ((otp_sw_rgn + i) << 1), 2, &value);
if (ret != DBUS_OK) {
MFREE(dhd_bus->pub.osh, cis, otp_size * 2);
return ret;
}
otpinfo[i] = (uint16) value;
}
for (i = 0; i < (otp_size << 1); ) {
if (standard_cis) {
tup = cis[i++];
if (tup == CISTPL_NULL || tup == CISTPL_END)
tlen = 0;
else
tlen = cis[i++];
} else {
if (cis[i] == CISTPL_NULL || cis[i] == CISTPL_END) {
tlen = 0;
tup = cis[i];
} else {
tlen = cis[i];
tup = CISTPL_BRCM_HNBU;
}
++i;
}
if (tup == CISTPL_END || (i + tlen) >= (otp_size << 1)) {
break;
}
switch (tup) {
case CISTPL_BRCM_HNBU:
switch (cis[i]) {
case HNBU_BOARDTYPE:
btype = (uint16) ((cis[i + 2] << 8) + cis[i + 1]);
btype_present = TRUE;
DBUSTRACE(("%s: HNBU_BOARDTYPE = 0x%2x\n", __FUNCTION__,
(uint32)btype));
break;
case HNBU_BOARDREV:
if (tlen == 2)
brev = (uint16) cis[i + 1];
else
brev = (uint16) ((cis[i + 2] << 8) + cis[i + 1]);
brev_present = TRUE;
DBUSTRACE(("%s: HNBU_BOARDREV = 0x%2x\n", __FUNCTION__,
(uint32)*boardrev));
break;
case HNBU_HNBUCIS:
DBUSTRACE(("%s: HNBU_HNBUCIS\n", __FUNCTION__));
tlen++;
standard_cis = FALSE;
break;
}
break;
}
i += tlen;
}
MFREE(dhd_bus->pub.osh, cis, otp_size * 2);
if (btype_present == TRUE && brev_present == TRUE) {
*boardtype = btype;
*boardrev = brev;
DBUSERR(("otp boardtype = 0x%2x boardrev = 0x%2x\n",
*boardtype, *boardrev));
return DBUS_OK;
}
else
return DBUS_ERR;
} /* dbus_otp */
static int
dbus_select_nvram(dhd_bus_t *dhd_bus, int8 *jumbonvram, int jumbolen,
uint16 boardtype, uint16 boardrev, int8 **nvram, int *nvram_len)
{
/* Multi board nvram file format is contenation of nvram info with \r
* The file format for two contatenated set is
* \nBroadcom Jumbo Nvram file\nfirst_set\nsecond_set\nthird_set\n
*/
uint8 *nvram_start = NULL, *nvram_end = NULL;
uint8 *nvram_start_prev = NULL, *nvram_end_prev = NULL;
uint16 btype = 0, brev = 0;
int len = 0;
char *field;
*nvram = NULL;
*nvram_len = 0;
if (strncmp(BCM_JUMBO_START, jumbonvram, strlen(BCM_JUMBO_START))) {
/* single nvram file in the native format */
DBUSTRACE(("%s: Non-Jumbo NVRAM File \n", __FUNCTION__));
*nvram = jumbonvram;
*nvram_len = jumbolen;
return DBUS_OK;
} else {
DBUSTRACE(("%s: Jumbo NVRAM File \n", __FUNCTION__));
}
/* sanity test the end of the config sets for proper ending */
if (jumbonvram[jumbolen - 1] != BCM_JUMBO_NVRAM_DELIMIT ||
jumbonvram[jumbolen - 2] != '\0') {
DBUSERR(("%s: Bad Jumbo NVRAM file format\n", __FUNCTION__));
return DBUS_JUMBO_BAD_FORMAT;
}
dhd_bus->nvram_nontxt = DBUS_NVRAM_NONTXT;
nvram_start = jumbonvram;
while (*nvram_start != BCM_JUMBO_NVRAM_DELIMIT && len < jumbolen) {
/* consume the first file info line
* \nBroadcom Jumbo Nvram file\nfile1\n ...
*/
len ++;
nvram_start ++;
}
nvram_end = nvram_start;
/* search for "boardrev=0xabcd" and "boardtype=0x1234" information in
* the concatenated nvram config files /sets
*/
while (len < jumbolen) {
if (*nvram_end == '\0') {
/* end of a config set is marked by multiple null characters */
len ++;
nvram_end ++;
DBUSTRACE(("%s: NULL chr len = %d char = 0x%x\n", __FUNCTION__,
len, *nvram_end));
continue;
} else if (*nvram_end == BCM_JUMBO_NVRAM_DELIMIT) {
/* config set delimiter is reached */
/* check if next config set is present or not
* return if next config is not present
*/
/* start search the next config set */
nvram_start_prev = nvram_start;
nvram_end_prev = nvram_end;
nvram_end ++;
nvram_start = nvram_end;
btype = brev = 0;
DBUSTRACE(("%s: going to next record len = %d "
"char = 0x%x \n", __FUNCTION__, len, *nvram_end));
len ++;
if (len >= jumbolen) {
*nvram = nvram_start_prev;
*nvram_len = (int)(nvram_end_prev - nvram_start_prev);
DBUSTRACE(("%s: no more len = %d nvram_end = 0x%p",
__FUNCTION__, len, nvram_end));
return DBUS_JUMBO_NOMATCH;
} else {
continue;
}
} else {
DBUSTRACE(("%s: config str = %s\n", __FUNCTION__, nvram_end));
if (bcmp(nvram_end, "boardtype", strlen("boardtype")) == 0) {
field = strchr(nvram_end, '=');
field++;
btype = (uint16)bcm_strtoul(field, NULL, 0);
DBUSTRACE(("%s: btype = 0x%x boardtype = 0x%x \n", __FUNCTION__,
btype, boardtype));
}
if (bcmp(nvram_end, "boardrev", strlen("boardrev")) == 0) {
field = strchr(nvram_end, '=');
field++;
brev = (uint16)bcm_strtoul(field, NULL, 0);
DBUSTRACE(("%s: brev = 0x%x boardrev = 0x%x \n", __FUNCTION__,
brev, boardrev));
}
if (btype == boardtype && brev == boardrev) {
/* locate nvram config set end - ie.find '\r' char */
while (*nvram_end != BCM_JUMBO_NVRAM_DELIMIT)
nvram_end ++;
*nvram = nvram_start;
*nvram_len = (int) (nvram_end - nvram_start);
DBUSTRACE(("found len = %d nvram_start = 0x%p "
"nvram_end = 0x%p\n", *nvram_len, nvram_start, nvram_end));
return DBUS_OK;
}
len += (strlen(nvram_end) + 1);
nvram_end += (strlen(nvram_end) + 1);
}
}
return DBUS_JUMBO_NOMATCH;
} /* dbus_select_nvram */
#endif
#define DBUS_NRXQ 50
#define DBUS_NTXQ 100
static void
dhd_dbus_send_complete(void *handle, void *info, int status)
{
dhd_pub_t *dhd = (dhd_pub_t *)handle;
void *pkt = info;
if ((dhd == NULL) || (pkt == NULL)) {
DBUSERR(("dhd or pkt is NULL\n"));
return;
}
if (status == DBUS_OK) {
dhd->dstats.tx_packets++;
} else {
DBUSERR(("TX error=%d\n", status));
dhd->dstats.tx_errors++;
}
#ifdef PROP_TXSTATUS
if (DHD_PKTTAG_WLFCPKT(PKTTAG(pkt)) &&
(dhd_wlfc_txcomplete(dhd, pkt, status == 0) != WLFC_UNSUPPORTED)) {
return;
}
#endif /* PROP_TXSTATUS */
PKTFREE(dhd->osh, pkt, TRUE);
}
static void
dhd_dbus_recv_pkt(void *handle, void *pkt)
{
uchar reorder_info_buf[WLHOST_REORDERDATA_TOTLEN];
uint reorder_info_len;
uint pkt_count;
dhd_pub_t *dhd = (dhd_pub_t *)handle;
int ifidx = 0;
if (dhd == NULL) {
DBUSERR(("%s: dhd is NULL\n", __FUNCTION__));
return;
}
/* If the protocol uses a data header, check and remove it */
if (dhd_prot_hdrpull(dhd, &ifidx, pkt, reorder_info_buf,
&reorder_info_len) != 0) {
DBUSERR(("rx protocol error\n"));
PKTFREE(dhd->osh, pkt, FALSE);
dhd->rx_errors++;
return;
}
if (reorder_info_len) {
/* Reordering info from the firmware */
dhd_process_pkt_reorder_info(dhd, reorder_info_buf, reorder_info_len,
&pkt, &pkt_count);
if (pkt_count == 0)
return;
}
else {
pkt_count = 1;
}
dhd_rx_frame(dhd, ifidx, pkt, pkt_count, 0);
}
static void
dhd_dbus_recv_buf(void *handle, uint8 *buf, int len)
{
dhd_pub_t *dhd = (dhd_pub_t *)handle;
void *pkt;
if (dhd == NULL) {
DBUSERR(("%s: dhd is NULL\n", __FUNCTION__));
return;
}
if ((pkt = PKTGET(dhd->osh, len, FALSE)) == NULL) {
DBUSERR(("PKTGET (rx) failed=%d\n", len));
return;
}
bcopy(buf, PKTDATA(dhd->osh, pkt), len);
dhd_dbus_recv_pkt(dhd, pkt);
}
static void
dhd_dbus_txflowcontrol(void *handle, bool onoff)
{
dhd_pub_t *dhd = (dhd_pub_t *)handle;
bool wlfc_enabled = FALSE;
if (dhd == NULL) {
DBUSERR(("%s: dhd is NULL\n", __FUNCTION__));
return;
}
#ifdef PROP_TXSTATUS
wlfc_enabled = (dhd_wlfc_flowcontrol(dhd, onoff, !onoff) != WLFC_UNSUPPORTED);
#endif
if (!wlfc_enabled) {
dhd_txflowcontrol(dhd, ALL_INTERFACES, onoff);
}
}
static void
dhd_dbus_errhandler(void *handle, int err)
{
}
static void
dhd_dbus_ctl_complete(void *handle, int type, int status)
{
dhd_pub_t *dhd = (dhd_pub_t *)handle;
if (dhd == NULL) {
DBUSERR(("%s: dhd is NULL\n", __FUNCTION__));
return;
}
if (type == DBUS_CBCTL_READ) {
if (status == DBUS_OK)
dhd->rx_ctlpkts++;
else
dhd->rx_ctlerrs++;
} else if (type == DBUS_CBCTL_WRITE) {
if (status == DBUS_OK)
dhd->tx_ctlpkts++;
else
dhd->tx_ctlerrs++;
}
dhd_prot_ctl_complete(dhd);
}
static void
dhd_dbus_state_change(void *handle, int state)
{
dhd_pub_t *dhd = (dhd_pub_t *)handle;
unsigned long flags;
if (dhd == NULL) {
DBUSERR(("%s: dhd is NULL\n", __FUNCTION__));
return;
}
switch (state) {
case DBUS_STATE_DL_NEEDED:
DBUSERR(("%s: firmware request cannot be handled\n", __FUNCTION__));
break;
case DBUS_STATE_DOWN:
DBUSTRACE(("%s: DBUS is down\n", __FUNCTION__));
DHD_LINUX_GENERAL_LOCK(dhd, flags);
dhd_txflowcontrol(dhd, ALL_INTERFACES, ON);
dhd->busstate = DHD_BUS_DOWN;
DHD_LINUX_GENERAL_UNLOCK(dhd, flags);
break;
case DBUS_STATE_UP:
DBUSTRACE(("%s: DBUS is up\n", __FUNCTION__));
DHD_LINUX_GENERAL_LOCK(dhd, flags);
dhd_txflowcontrol(dhd, ALL_INTERFACES, OFF);
dhd->busstate = DHD_BUS_DATA;
DHD_LINUX_GENERAL_UNLOCK(dhd, flags);
break;
case DBUS_STATE_SLEEP:
DBUSTRACE(("%s: DBUS is suspend\n", __FUNCTION__));
DHD_LINUX_GENERAL_LOCK(dhd, flags);
dhd_txflowcontrol(dhd, ALL_INTERFACES, ON);
dhd->busstate = DHD_BUS_SUSPEND;
DHD_LINUX_GENERAL_UNLOCK(dhd, flags);
break;
default:
break;
}
DBUSERR(("%s: DBUS current state=%d\n", __FUNCTION__, state));
}
static void *
dhd_dbus_pktget(void *handle, uint len, bool send)
{
dhd_pub_t *dhd = (dhd_pub_t *)handle;
void *p = NULL;
if (dhd == NULL) {
DBUSERR(("%s: dhd is NULL\n", __FUNCTION__));
return NULL;
}
if (send == TRUE) {
dhd_os_sdlock_txq(dhd);
p = PKTGET(dhd->osh, len, TRUE);
dhd_os_sdunlock_txq(dhd);
} else {
dhd_os_sdlock_rxq(dhd);
p = PKTGET(dhd->osh, len, FALSE);
dhd_os_sdunlock_rxq(dhd);
}
return p;
}
static void
dhd_dbus_pktfree(void *handle, void *p, bool send)
{
dhd_pub_t *dhd = (dhd_pub_t *)handle;
if (dhd == NULL) {
DBUSERR(("%s: dhd is NULL\n", __FUNCTION__));
return;
}
if (send == TRUE) {
#ifdef PROP_TXSTATUS
if (DHD_PKTTAG_WLFCPKT(PKTTAG(p)) &&
(dhd_wlfc_txcomplete(dhd, p, FALSE) != WLFC_UNSUPPORTED)) {
return;
}
#endif /* PROP_TXSTATUS */
dhd_os_sdlock_txq(dhd);
PKTFREE(dhd->osh, p, TRUE);
dhd_os_sdunlock_txq(dhd);
} else {
dhd_os_sdlock_rxq(dhd);
PKTFREE(dhd->osh, p, FALSE);
dhd_os_sdunlock_rxq(dhd);
}
}
static dbus_callbacks_t dhd_dbus_cbs = {
dhd_dbus_send_complete,
dhd_dbus_recv_buf,
dhd_dbus_recv_pkt,
dhd_dbus_txflowcontrol,
dhd_dbus_errhandler,
dhd_dbus_ctl_complete,
dhd_dbus_state_change,
dhd_dbus_pktget,
dhd_dbus_pktfree
};
uint
dhd_bus_chip(struct dhd_bus *bus)
{
ASSERT(bus != NULL);
return bus->pub.attrib.devid;
}
uint
dhd_bus_chiprev(struct dhd_bus *bus)
{
ASSERT(bus);
ASSERT(bus != NULL);
return bus->pub.attrib.chiprev;
}
void
dhd_bus_dump(dhd_pub_t *dhdp, struct bcmstrbuf *strbuf)
{
bcm_bprintf(strbuf, "Bus USB\n");
}
void
dhd_bus_clearcounts(dhd_pub_t *dhdp)
{
}
int
dhd_bus_txdata(struct dhd_bus *bus, void *pktbuf)
{
DBUSTRACE(("%s\n", __FUNCTION__));
if (bus->txoff) {
DBUSTRACE(("txoff\n"));
return BCME_EPERM;
}
return dbus_send_txdata(&bus->pub, pktbuf);
}
static void
dhd_dbus_advertise_bus_cleanup(dhd_pub_t *dhdp)
{
unsigned long flags;
int timeleft;
DHD_LINUX_GENERAL_LOCK(dhdp, flags);
dhdp->busstate = DHD_BUS_DOWN_IN_PROGRESS;
DHD_LINUX_GENERAL_UNLOCK(dhdp, flags);
timeleft = dhd_os_busbusy_wait_negation(dhdp, &dhdp->dhd_bus_busy_state);
if ((timeleft == 0) || (timeleft == 1)) {
DBUSERR(("%s : Timeout due to dhd_bus_busy_state=0x%x\n",
__FUNCTION__, dhdp->dhd_bus_busy_state));
ASSERT(0);
}
return;
}
static void
dhd_dbus_advertise_bus_remove(dhd_pub_t *dhdp)
{
unsigned long flags;
int timeleft;
DHD_LINUX_GENERAL_LOCK(dhdp, flags);
dhdp->busstate = DHD_BUS_REMOVE;
DHD_LINUX_GENERAL_UNLOCK(dhdp, flags);
timeleft = dhd_os_busbusy_wait_negation(dhdp, &dhdp->dhd_bus_busy_state);
if ((timeleft == 0) || (timeleft == 1)) {
DBUSERR(("%s : Timeout due to dhd_bus_busy_state=0x%x\n",
__FUNCTION__, dhdp->dhd_bus_busy_state));
ASSERT(0);
}
return;
}
int
dhd_bus_devreset(dhd_pub_t *dhdp, uint8 flag)
{
int bcmerror = 0;
unsigned long flags;
wifi_adapter_info_t *adapter = (wifi_adapter_info_t *)dhdp->adapter;
if (flag == TRUE) {
if (!dhdp->dongle_reset) {
DBUSERR(("%s: == Power OFF ==\n", __FUNCTION__));
dhd_dbus_advertise_bus_cleanup(dhdp);
dhd_os_wd_timer(dhdp, 0);
#if !defined(IGNORE_ETH0_DOWN)
/* Force flow control as protection when stop come before ifconfig_down */
dhd_txflowcontrol(dhdp, ALL_INTERFACES, ON);
#endif /* !defined(IGNORE_ETH0_DOWN) */
dbus_stop(dhdp->bus);
dhdp->dongle_reset = TRUE;
dhdp->up = FALSE;
DHD_LINUX_GENERAL_LOCK(dhdp, flags);
dhdp->busstate = DHD_BUS_DOWN;
DHD_LINUX_GENERAL_UNLOCK(dhdp, flags);
wifi_clr_adapter_status(adapter, WIFI_STATUS_FW_READY);
printf("%s: WLAN OFF DONE\n", __FUNCTION__);
/* App can now remove power from device */
} else
bcmerror = BCME_ERROR;
} else {
/* App must have restored power to device before calling */
printf("\n\n%s: == WLAN ON ==\n", __FUNCTION__);
if (dhdp->dongle_reset) {
/* Turn on WLAN */
DHD_MUTEX_UNLOCK();
wait_event_interruptible_timeout(adapter->status_event,
wifi_get_adapter_status(adapter, WIFI_STATUS_FW_READY),
msecs_to_jiffies(DHD_FW_READY_TIMEOUT));
DHD_MUTEX_LOCK();
bcmerror = dbus_up(dhdp->bus);
if (bcmerror == BCME_OK) {
dhdp->dongle_reset = FALSE;
dhdp->up = TRUE;
#if !defined(IGNORE_ETH0_DOWN)
/* Restore flow control */
dhd_txflowcontrol(dhdp, ALL_INTERFACES, OFF);
#endif
dhd_os_wd_timer(dhdp, dhd_watchdog_ms);
DBUSTRACE(("%s: WLAN ON DONE\n", __FUNCTION__));
} else {
DBUSERR(("%s: failed to dbus_up with code %d\n", __FUNCTION__, bcmerror));
}
}
}
return bcmerror;
}
void
dhd_bus_update_fw_nv_path(struct dhd_bus *bus, char *pfw_path,
char *pnv_path, char *pclm_path, char *pconf_path)
{
DBUSTRACE(("%s\n", __FUNCTION__));
if (bus == NULL) {
DBUSERR(("%s: bus is NULL\n", __FUNCTION__));
return;
}
bus->fw_path = pfw_path;
bus->nv_path = pnv_path;
bus->dhd->clm_path = pclm_path;
bus->dhd->conf_path = pconf_path;
dhd_conf_set_path_params(bus->dhd, bus->fw_path, bus->nv_path);
}
/*
* hdrlen is space to reserve in pkt headroom for DBUS
*/
void *
dhd_dbus_probe_cb(void *arg, const char *desc, uint32 bustype,
uint16 bus_no, uint16 slot, uint32 hdrlen)
{
osl_t *osh = NULL;
dhd_bus_t *bus = NULL;
dhd_pub_t *pub = NULL;
uint rxsz;
int dlneeded = 0;
wifi_adapter_info_t *adapter = NULL;
DBUSTRACE(("%s: Enter\n", __FUNCTION__));
adapter = dhd_wifi_platform_get_adapter(bustype, bus_no, slot);
if (!g_pub) {
/* Ask the OS interface part for an OSL handle */
if (!(osh = osl_attach(NULL, bustype, TRUE))) {
DBUSERR(("%s: OSL attach failed\n", __FUNCTION__));
goto fail;
}
/* Attach to the dhd/OS interface */
if (!(pub = dhd_attach(osh, bus, hdrlen, adapter))) {
DBUSERR(("%s: dhd_attach failed\n", __FUNCTION__));
goto fail;
}
} else {
pub = g_pub;
osh = pub->osh;
}
if (pub->bus) {
DBUSERR(("%s: wrong probe\n", __FUNCTION__));
goto fail;
}
rxsz = dhd_get_rxsz(pub);
bus = dbus_attach(osh, rxsz, DBUS_NRXQ, DBUS_NTXQ, pub, &dhd_dbus_cbs, NULL, NULL);
if (bus) {
pub->bus = bus;
bus->dhd = pub;
dlneeded = dbus_dlneeded(bus);
if (dlneeded >= 0) {
if (!g_pub) {
dhd_conf_reset(pub);
dhd_conf_set_chiprev(pub, bus->pub.attrib.devid, bus->pub.attrib.chiprev);
dhd_conf_preinit(pub);
}
}
if (g_pub || dhd_download_fw_on_driverload) {
if (dlneeded == 0) {
wifi_set_adapter_status(adapter, WIFI_STATUS_FW_READY);
#ifdef BCM_REQUEST_FW
} else if (dlneeded > 0) {
wifi_clr_adapter_status(adapter, WIFI_STATUS_FW_READY);
dhd_set_path(bus->dhd);
if (dbus_download_firmware(bus, bus->fw_path, bus->nv_path) != DBUS_OK)
goto fail;
bus->dhd->busstate = DHD_BUS_LOAD;
#endif
} else {
goto fail;
}
}
} else {
DBUSERR(("%s: dbus_attach failed\n", __FUNCTION__));
}
if (!g_pub) {
/* Ok, have the per-port tell the stack we're open for business */
if (dhd_attach_net(bus->dhd, TRUE) != 0)
{
DBUSERR(("%s: Net attach failed!!\n", __FUNCTION__));
goto fail;
}
pub->hang_report = TRUE;
#if defined(MULTIPLE_SUPPLICANT)
wl_android_post_init(); // terence 20120530: fix critical section in dhd_open and dhdsdio_probe
#endif
g_pub = pub;
}
DBUSTRACE(("%s: Exit\n", __FUNCTION__));
wifi_clr_adapter_status(adapter, WIFI_STATUS_DETTACH);
wifi_set_adapter_status(adapter, WIFI_STATUS_ATTACH);
wake_up_interruptible(&adapter->status_event);
/* This is passed to dhd_dbus_disconnect_cb */
return bus;
fail:
if (pub && pub->bus) {
dbus_detach(pub->bus);
pub->bus = NULL;
}
/* Release resources in reverse order */
if (!g_pub) {
if (pub) {
dhd_detach(pub);
dhd_free(pub);
}
if (osh) {
osl_detach(osh);
}
}
printf("%s: Failed\n", __FUNCTION__);
return NULL;
}
void
dhd_dbus_disconnect_cb(void *arg)
{
dhd_bus_t *bus = (dhd_bus_t *)arg;
dhd_pub_t *pub = g_pub;
osl_t *osh;
wifi_adapter_info_t *adapter = NULL;
adapter = (wifi_adapter_info_t *)pub->adapter;
if (pub && !pub->dhd_remove && bus == NULL) {
DBUSERR(("%s: bus is NULL\n", __FUNCTION__));
return;
}
if (!adapter) {
DBUSERR(("%s: adapter is NULL\n", __FUNCTION__));
return;
}
printf("%s: Enter dhd_remove=%d on %s\n", __FUNCTION__,
pub->dhd_remove, adapter->name);
if (!pub->dhd_remove) {
/* Advertise bus remove during rmmod */
dhd_dbus_advertise_bus_remove(bus->dhd);
dbus_detach(pub->bus);
pub->bus = NULL;
wifi_clr_adapter_status(adapter, WIFI_STATUS_ATTACH);
wifi_set_adapter_status(adapter, WIFI_STATUS_DETTACH);
wake_up_interruptible(&adapter->status_event);
} else {
osh = pub->osh;
dhd_detach(pub);
if (pub->bus) {
dbus_detach(pub->bus);
pub->bus = NULL;
}
dhd_free(pub);
g_pub = NULL;
if (MALLOCED(osh)) {
DBUSERR(("%s: MEMORY LEAK %d bytes\n", __FUNCTION__, MALLOCED(osh)));
}
osl_detach(osh);
}
DBUSTRACE(("%s: Exit\n", __FUNCTION__));
}
#ifdef LINUX_EXTERNAL_MODULE_DBUS
static int __init
bcm_dbus_module_init(void)
{
printf("Inserting bcm_dbus module \n");
return 0;
}
static void __exit
bcm_dbus_module_exit(void)
{
printf("Removing bcm_dbus module \n");
return;
}
EXPORT_SYMBOL(dbus_pnp_sleep);
EXPORT_SYMBOL(dbus_get_devinfo);
EXPORT_SYMBOL(dbus_detach);
EXPORT_SYMBOL(dbus_get_attrib);
EXPORT_SYMBOL(dbus_down);
EXPORT_SYMBOL(dbus_pnp_resume);
EXPORT_SYMBOL(dbus_set_config);
EXPORT_SYMBOL(dbus_flowctrl_rx);
EXPORT_SYMBOL(dbus_up);
EXPORT_SYMBOL(dbus_get_device_speed);
EXPORT_SYMBOL(dbus_send_pkt);
EXPORT_SYMBOL(dbus_recv_ctl);
EXPORT_SYMBOL(dbus_attach);
MODULE_LICENSE("GPL");
module_init(bcm_dbus_module_init);
module_exit(bcm_dbus_module_exit);
#endif /* #ifdef LINUX_EXTERNAL_MODULE_DBUS */