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nuttx/drivers/wireless/ieee80211/bcm43xxx/bcmf_sdio.c
Xiang Xiao 6a3c2aded6 Fix wait loop and void cast (#24) 
* Simplify EINTR/ECANCEL error handling

1. Add semaphore uninterruptible wait function
2 .Replace semaphore wait loop with a single uninterruptible wait
3. Replace all sem_xxx to nxsem_xxx

* Unify the void cast usage

1. Remove void cast for function because many place ignore the returned value witout cast
2. Replace void cast for variable with UNUSED macro
2020-01-02 10:54:43 -06:00

1017 lines
24 KiB
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/****************************************************************************
* drivers/wireless/bcm43xxx/ieee80211/bcmf_sdio.c
*
* Copyright (C) 2017-2018 Gregory Nutt. All rights reserved.
* Author: Simon Piriou <spiriou31@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <debug.h>
#include <errno.h>
#include <queue.h>
#include <semaphore.h>
#include <assert.h>
#include <nuttx/kmalloc.h>
#include <nuttx/arch.h>
#include <nuttx/kthread.h>
#include <nuttx/wdog.h>
#include <nuttx/wireless/ieee80211/mmc_sdio.h>
#include <nuttx/wireless/ieee80211/bcmf_sdio.h>
#include <nuttx/wireless/ieee80211/bcmf_board.h>
#include "bcmf_sdio.h"
#include "bcmf_core.h"
#include "bcmf_sdpcm.h"
#include "bcmf_utils.h"
#include "bcmf_sdio_core.h"
#include "bcmf_sdio_regs.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define BCMF_DEVICE_RESET_DELAY_MS 10
#define BCMF_DEVICE_START_DELAY_MS 10
#define BCMF_CLOCK_SETUP_DELAY_MS 500
#define BCMF_THREAD_NAME "bcmf"
#define BCMF_THREAD_STACK_SIZE 2048
#define BCMF_WAITDOG_TIMEOUT_TICK (5*CLOCKS_PER_SEC)
/* Chip-common registers */
#define CHIPCOMMON_GPIO_CONTROL ((uint32_t)(0x18000000 + 0x6c) )
#define CHIPCOMMON_SR_CONTROL0 ((uint32_t)(0x18000000 + 0x504) )
#define CHIPCOMMON_SR_CONTROL1 ((uint32_t)(0x18000000 + 0x508) )
/****************************************************************************
* Public Data
****************************************************************************/
/* Supported chip configurations */
#ifdef CONFIG_IEEE80211_BROADCOM_BCM43362
extern const struct bcmf_sdio_chip bcmf_43362_config_sdio;
#endif
#ifdef CONFIG_IEEE80211_BROADCOM_BCM43438
extern const struct bcmf_sdio_chip bcmf_43438_config_sdio;
#endif
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static int bcmf_probe(FAR struct bcmf_sdio_dev_s *sbus);
static int bcmf_hwinitialize(FAR struct bcmf_sdio_dev_s *sbus);
static void bcmf_hwuninitialize(FAR struct bcmf_sdio_dev_s *sbus);
static int bcmf_chipinitialize(FAR struct bcmf_sdio_dev_s *sbus);
static int bcmf_oob_irq(FAR void *arg);
static int bcmf_sdio_bus_sleep(FAR struct bcmf_sdio_dev_s *sbus, bool sleep);
static void bcmf_sdio_waitdog_timeout(int argc, wdparm_t arg1, ...);
static int bcmf_sdio_thread(int argc, char **argv);
static int bcmf_sdio_find_block_size(unsigned int size);
static int bcmf_sdio_sr_init(FAR struct bcmf_sdio_dev_s *sbus);
static bool brcm_chip_sr_capable(FAR struct bcmf_sdio_dev_s *sbus);
/****************************************************************************
* Private Data
****************************************************************************/
/* FIXME remove */
FAR struct bcmf_dev_s *g_sdio_priv;
/* Buffer pool for SDIO bus interface
* This pool is shared between all driver devices
*/
static struct bcmf_sdio_frame g_pktframes[BCMF_PKT_POOL_SIZE];
/* TODO free_queue should be static */
/****************************************************************************
* Private Functions
****************************************************************************/
int bcmf_oob_irq(FAR void *arg)
{
FAR struct bcmf_sdio_dev_s *sbus = (FAR struct bcmf_sdio_dev_s *)arg;
if (sbus->ready)
{
/* Signal bmcf thread */
sbus->irq_pending = true;
nxsem_post(&sbus->thread_signal);
}
return OK;
}
int bcmf_sdio_bus_sleep(FAR struct bcmf_sdio_dev_s *sbus, bool sleep)
{
int ret;
int loops;
uint8_t value;
if (sbus->sleeping == sleep)
{
return OK;
}
if (sleep)
{
sbus->sleeping = true;
return bcmf_write_reg(sbus, 1, SBSDIO_FUNC1_CHIPCLKCSR, 0);
}
else
{
loops = 200;
while (--loops > 0)
{
/* Request HT Avail */
ret = bcmf_write_reg(sbus, 1, SBSDIO_FUNC1_CHIPCLKCSR,
SBSDIO_HT_AVAIL_REQ | SBSDIO_FORCE_HT);
if (ret != OK)
{
wlerr("HT Avail request failed %d\n", ret);
return ret;
}
/* Wait for High Throughput clock */
up_mdelay(100);
ret = bcmf_read_reg(sbus, 1, SBSDIO_FUNC1_CHIPCLKCSR, &value);
if (ret != OK)
{
return ret;
}
if (value & SBSDIO_HT_AVAIL)
{
/* High Throughput clock is ready */
break;
}
}
if (loops <= 0)
{
wlerr("HT clock not ready\n");
return -ETIMEDOUT;
}
sbus->sleeping = false;
}
return OK;
}
/****************************************************************************
* Name: bcmf_probe
****************************************************************************/
int bcmf_probe(FAR struct bcmf_sdio_dev_s *sbus)
{
int ret;
/* Probe sdio card compatible device */
ret = sdio_probe(sbus->sdio_dev);
if (ret != OK)
{
goto exit_error;
}
/* Set FN0 / FN1 / FN2 default block size */
ret = sdio_set_blocksize(sbus->sdio_dev, 0, 64);
if (ret != OK)
{
goto exit_error;
}
ret = sdio_set_blocksize(sbus->sdio_dev, 1, 64);
if (ret != OK)
{
goto exit_error;
}
ret = sdio_set_blocksize(sbus->sdio_dev, 2, 64);
if (ret != OK)
{
goto exit_error;
}
/* Enable device interrupts for FN0, FN1 and FN2 */
ret = bcmf_write_reg(sbus, 0, SDIO_CCCR_INTEN,
(1 << 0) | (1 << 1) | (1 << 2));
if (ret != OK)
{
goto exit_error;
}
/* Default device clock speed is up to 25 Mhz
* We could set EHS bit to operate at a clock rate up to 50 Mhz.
*/
SDIO_CLOCK(sbus->sdio_dev, CLOCK_SD_TRANSFER_4BIT);
up_mdelay(BCMF_CLOCK_SETUP_DELAY_MS);
/* Enable bus FN1 */
ret = sdio_enable_function(sbus->sdio_dev, 1);
if (ret != OK)
{
goto exit_error;
}
return OK;
exit_error:
wlerr("ERROR: failed to probe device %d\n", sbus->minor);
return ret;
}
/****************************************************************************
* Name: bcmf_businitialize
****************************************************************************/
int bcmf_businitialize(FAR struct bcmf_sdio_dev_s *sbus)
{
int ret;
int loops;
uint8_t value;
/* Send Active Low-Power clock request */
ret = bcmf_write_reg(sbus, 1, SBSDIO_FUNC1_CHIPCLKCSR,
SBSDIO_FORCE_HW_CLKREQ_OFF |
SBSDIO_ALP_AVAIL_REQ |
SBSDIO_FORCE_ALP);
if (ret != OK)
{
return ret;
}
loops = 10;
while (--loops > 0)
{
up_mdelay(10);
ret = bcmf_read_reg(sbus, 1, SBSDIO_FUNC1_CHIPCLKCSR, &value);
if (ret != OK)
{
return ret;
}
if (value & SBSDIO_ALP_AVAIL)
{
/* Active Low-Power clock is ready */
break;
}
}
if (loops <= 0)
{
wlerr("failed to enable ALP\n");
return -ETIMEDOUT;
}
/* Clear Active Low-Power clock request */
ret = bcmf_write_reg(sbus, 1, SBSDIO_FUNC1_CHIPCLKCSR, 0);
if (ret != OK)
{
return ret;
}
/* Disable pull-ups on SDIO cmd, d0-2 lines */
ret = bcmf_write_reg(sbus, 1, SBSDIO_FUNC1_SDIOPULLUP, 0);
if (ret != OK)
{
return ret;
}
/* Do chip specific initialization */
ret = bcmf_chipinitialize(sbus);
if (ret != OK)
{
return ret;
}
/* Upload firmware */
ret = bcmf_core_upload_firmware(sbus);
if (ret != OK)
{
return ret;
}
/* Enable FN2 (frame transfers) */
ret = sdio_enable_function(sbus->sdio_dev, 2);
if (ret != OK)
{
return ret;
}
return OK;
}
int bcmf_bus_setup_interrupts(FAR struct bcmf_sdio_dev_s *sbus)
{
int ret;
/* Configure gpio interrupt pin */
bcmf_board_setup_oob_irq(sbus->minor, bcmf_oob_irq, (void *)sbus);
/* Enable function 2 interrupt */
ret = sdio_enable_interrupt(sbus->sdio_dev, 0);
if (ret != OK)
{
return ret;
}
ret = sdio_enable_interrupt(sbus->sdio_dev, 2);
if (ret != OK)
{
return ret;
}
#ifndef CONFIG_BCMFMAC_NO_OOB
/* Redirect, configure and enable io for out-of-band interrupt signal */
ret = bcmf_write_reg(sbus, 0, SDIO_CCCR_BRCM_SEPINT,
SDIO_SEPINT_MASK | SDIO_SEPINT_OE |
SDIO_SEPINT_ACT_HI);
if (ret != OK)
{
return ret;
}
#endif
/* Wake up chip to be sure function 2 is running */
ret = bcmf_sdio_bus_sleep(sbus, false);
if (ret != OK)
{
return ret;
}
/* FN2 successfully enabled, set core and enable interrupts */
bcmf_write_sbregw(sbus,
CORE_BUS_REG(sbus->chip->core_base[SDIOD_CORE_ID],
hostintmask), I_HMB_SW_MASK);
bcmf_write_sbregb(sbus,
CORE_BUS_REG(sbus->chip->core_base[SDIOD_CORE_ID],
funcintmask), 2);
/* Lower F2 Watermark to avoid DMA Hang in F2 when SD Clock is stopped. */
bcmf_write_reg(sbus, 1, SBSDIO_WATERMARK, 8);
return OK;
}
/****************************************************************************
* Name: bcmf_hwinitialize
****************************************************************************/
int bcmf_hwinitialize(FAR struct bcmf_sdio_dev_s *sbus)
{
/* Attach and prepare SDIO interrupts */
SDIO_ATTACH(sbus->sdio_dev);
/* Set ID mode clocking (<400KHz) */
SDIO_CLOCK(sbus->sdio_dev, CLOCK_IDMODE);
/* Configure hardware */
bcmf_board_initialize(sbus->minor);
/* Reset and power device */
bcmf_board_reset(sbus->minor, true);
bcmf_board_power(sbus->minor, true);
up_mdelay(BCMF_DEVICE_RESET_DELAY_MS);
bcmf_board_reset(sbus->minor, false);
/* Wait for device to start */
up_mdelay(BCMF_DEVICE_START_DELAY_MS);
return OK;
}
/****************************************************************************
* Name: bcmf_hwuninitialize
****************************************************************************/
void bcmf_hwuninitialize(FAR struct bcmf_sdio_dev_s *sbus)
{
/* Shutdown device */
bcmf_board_power(sbus->minor, false);
bcmf_board_reset(sbus->minor, true);
}
int bcmf_sdio_find_block_size(unsigned int size)
{
int ret = 0;
int size_copy = size;
while (size_copy)
{
size_copy >>= 1;
ret++;
}
if (size & (size - 1))
{
return 1 << ret;
}
return 1 << (ret - 1);
}
/* Init save-restore if the firmware support it: */
static int bcmf_sdio_sr_init(FAR struct bcmf_sdio_dev_s *sbus)
{
uint8_t data;
if (brcm_chip_sr_capable(sbus))
{
/* Configure WakeupCtrl register to set HtAvail request bit in
* chipClockCSR register after the sdiod core is powered on.
*/
bcmf_read_reg(sbus, 1, SBSDIO_FUNC1_WAKEUPCTRL, &data);
data |= SBSDIO_FUNC1_WCTRL_HTWAIT_MASK;
bcmf_write_reg(sbus, 1, SBSDIO_FUNC1_WAKEUPCTRL, data);
/* Set brcmCardCapability to noCmdDecode mode.
* It makes sdiod_aos to wakeup host for any activity of cmd line,
* even though module won't decode cmd or respond
*/
bcmf_write_reg(sbus, 0, SDIO_CCCR_BRCM_CARDCAP,
SDIO_CCCR_BRCM_CARDCAP_CMD_NODEC);
bcmf_write_reg(sbus, 1, SBSDIO_FUNC1_CHIPCLKCSR,
SBSDIO_FORCE_HT);
/* Enable KeepSdioOn (KSO) bit for normal operation */
bcmf_read_reg(sbus, 1, SBSDIO_FUNC1_SLEEPCSR, &data);
if ((data & SBSDIO_FUNC1_SLEEPCSR_KSO_MASK) == 0)
{
data |= SBSDIO_FUNC1_SLEEPCSR_KSO_MASK;
bcmf_write_reg(sbus, 1, SBSDIO_FUNC1_SLEEPCSR, data);
}
}
return OK;
}
/* Check if the firmware supports save restore feature.
* TODO: Add more chip specific logic, and move it to a new bcmf_chip.c file.
*/
static bool brcm_chip_sr_capable(FAR struct bcmf_sdio_dev_s *sbus)
{
uint32_t srctrl = 0;
int ret;
/* Check if fw initialized sr engine */
ret = bcmf_read_sbregw(sbus, CHIPCOMMON_SR_CONTROL1, &srctrl);
if (ret != OK)
{
return false;
}
else
{
return (srctrl != 0);
}
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: bcmf_transfer_bytes
****************************************************************************/
int bcmf_transfer_bytes(FAR struct bcmf_sdio_dev_s *sbus, bool write,
uint8_t function, uint32_t address,
uint8_t *buf, unsigned int len)
{
unsigned int blocklen;
unsigned int nblocks;
/* Use rw_io_direct method if len is 1 */
if (len == 0)
{
return -EINVAL;
}
if (len == 1)
{
if (write)
{
return sdio_io_rw_direct(sbus->sdio_dev, write,
function, address, *buf, NULL);
}
return sdio_io_rw_direct(sbus->sdio_dev, write,
function, address, 0, buf);
}
/* Find best block settings for transfer */
if (len >= 64)
{
/* Use block mode */
blocklen = 64;
nblocks = (len + 63) / 64;
}
else
{
/* Use byte mode */
blocklen = bcmf_sdio_find_block_size(len);
nblocks = 0;
}
return sdio_io_rw_extended(sbus->sdio_dev, write,
function, address, true, buf, blocklen, nblocks);
}
/****************************************************************************
* Name: bcmf_read_reg
****************************************************************************/
int bcmf_read_reg(FAR struct bcmf_sdio_dev_s *sbus, uint8_t function,
uint32_t address, uint8_t *reg)
{
*reg = 0;
return bcmf_transfer_bytes(sbus, false, function, address, reg, 1);
}
/****************************************************************************
* Name: bcmf_write_reg
****************************************************************************/
int bcmf_write_reg(FAR struct bcmf_sdio_dev_s *sbus, uint8_t function,
uint32_t address, uint8_t reg)
{
return bcmf_transfer_bytes(sbus, true, function, address, &reg, 1);
}
/****************************************************************************
* Name: bcmf_bus_sdio_initialize
****************************************************************************/
int bcmf_bus_sdio_initialize(FAR struct bcmf_dev_s *priv,
int minor, FAR struct sdio_dev_s *dev)
{
int ret;
FAR struct bcmf_sdio_dev_s *sbus;
/* Allocate sdio bus structure */
sbus = (FAR struct bcmf_sdio_dev_s *)kmm_malloc(sizeof(*sbus));
if (!sbus)
{
return -ENOMEM;
}
/* Initialize sdio bus device structure */
memset(sbus, 0, sizeof(*sbus));
sbus->sdio_dev = dev;
sbus->minor = minor;
sbus->ready = false;
sbus->sleeping = true;
sbus->bus.txframe = bcmf_sdpcm_queue_frame;
sbus->bus.rxframe = bcmf_sdpcm_get_rx_frame;
sbus->bus.allocate_frame = bcmf_sdpcm_alloc_frame;
sbus->bus.free_frame = bcmf_sdpcm_free_frame;
sbus->bus.stop = NULL; /* TODO */
/* Init transmit frames queue */
if ((ret = nxsem_init(&sbus->queue_mutex, 0, 1)) != OK)
{
goto exit_free_bus;
}
sq_init(&sbus->tx_queue);
sq_init(&sbus->rx_queue);
sq_init(&sbus->free_queue);
/* Setup free buffer list */
/* FIXME this should be static to driver */
for (ret = 0; ret < BCMF_PKT_POOL_SIZE; ret++)
{
bcmf_dqueue_push(&sbus->free_queue, &g_pktframes[ret].list_entry);
}
/* Init thread semaphore */
if ((ret = nxsem_init(&sbus->thread_signal, 0, 0)) != OK)
{
goto exit_free_bus;
}
if ((ret = nxsem_setprotocol(&sbus->thread_signal, SEM_PRIO_NONE)) != OK)
{
goto exit_free_bus;
}
/* Init thread waitdog */
sbus->waitdog = wd_create();
if (!sbus->waitdog)
{
ret = -ENOMEM;
goto exit_free_bus;
}
/* Initialize device hardware */
ret = bcmf_hwinitialize(sbus);
if (ret != OK)
{
goto exit_free_waitdog;
}
/* Probe device */
ret = bcmf_probe(sbus);
if (ret != OK)
{
goto exit_uninit_hw;
}
/* Initialize device bus */
ret = bcmf_businitialize(sbus);
if (ret != OK)
{
goto exit_uninit_hw;
}
up_mdelay(100);
sbus->ready = true;
ret = bcmf_bus_setup_interrupts(sbus);
if (ret != OK)
{
goto exit_uninit_hw;
}
ret = bcmf_sdio_sr_init(sbus);
if (ret != OK)
{
goto exit_uninit_hw;
}
/* FIXME global variable for now */
g_sdio_priv = priv;
/* Register sdio bus */
priv->bus = &sbus->bus;
/* Start the waitdog timer */
wd_start(sbus->waitdog, BCMF_WAITDOG_TIMEOUT_TICK,
bcmf_sdio_waitdog_timeout, 1, (wdparm_t)priv);
/* Spawn bcmf daemon thread */
ret = kthread_create(BCMF_THREAD_NAME, SCHED_PRIORITY_MAX,
BCMF_THREAD_STACK_SIZE, bcmf_sdio_thread,
(FAR char * const *)NULL);
if (ret <= 0)
{
wlerr("Cannot spawn bcmf thread\n");
ret = -EBADE;
goto exit_uninit_hw;
}
sbus->thread_id = ret;
/* SDIO bus is up and running */
return OK;
exit_uninit_hw:
bcmf_hwuninitialize(sbus);
exit_free_waitdog:
wd_delete(sbus->waitdog);
exit_free_bus:
kmm_free(sbus);
priv->bus = NULL;
return ret;
}
int bcmf_chipinitialize(FAR struct bcmf_sdio_dev_s *sbus)
{
uint32_t value = 0;
int chipid;
int ret;
ret = bcmf_read_sbregw(sbus, SI_ENUM_BASE, &value);
if (ret != OK)
{
return ret;
}
chipid = value & 0xffff;
sbus->cur_chip_id = chipid;
switch (chipid)
{
#ifdef CONFIG_IEEE80211_BROADCOM_BCM43362
case SDIO_DEVICE_ID_BROADCOM_43362:
wlinfo("bcm43362 chip detected\n");
sbus->chip = (struct bcmf_sdio_chip *)&bcmf_43362_config_sdio;
break;
#endif
#ifdef CONFIG_IEEE80211_BROADCOM_BCM43438
case SDIO_DEVICE_ID_BROADCOM_43430:
wlinfo("bcm43438 chip detected\n");
sbus->chip = (struct bcmf_sdio_chip *)&bcmf_43438_config_sdio;
break;
#endif
default:
wlerr("chip 0x%x is not supported\n", chipid);
return -ENODEV;
}
return OK;
}
void bcmf_sdio_waitdog_timeout(int argc, wdparm_t arg1, ...)
{
FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_s *)arg1;
FAR struct bcmf_sdio_dev_s *sbus = (FAR struct bcmf_sdio_dev_s *)priv->bus;
/* Notify bcmf thread */
wlinfo("Notify bcmf thread\n");
nxsem_post(&sbus->thread_signal);
}
int bcmf_sdio_thread(int argc, char **argv)
{
FAR struct bcmf_dev_s *priv = g_sdio_priv;
FAR struct bcmf_sdio_dev_s *sbus = (FAR struct bcmf_sdio_dev_s *)priv->bus;
int ret;
wlinfo(" Enter\n");
/* FIXME wait for the chip to be ready to receive commands */
up_mdelay(50);
while (sbus->ready)
{
/* Wait for event (device interrupt, user request or waitdog timer) */
ret = nxsem_wait(&sbus->thread_signal);
if (ret < 0)
{
wlerr("Error while waiting for semaphore\n");
break;
}
/* Restart the waitdog timer */
wd_start(sbus->waitdog, BCMF_WAITDOG_TIMEOUT_TICK,
bcmf_sdio_waitdog_timeout, 1, (wdparm_t)priv);
/* Wake up device */
bcmf_sdio_bus_sleep(sbus, false);
if (sbus->irq_pending)
{
/* Woken up by interrupt, read device status */
sbus->irq_pending = false;
bcmf_read_sbregw(sbus,
CORE_BUS_REG(sbus->chip->core_base[SDIOD_CORE_ID],
intstatus), &sbus->intstatus);
/* Clear interrupts */
bcmf_write_sbregw(sbus,
CORE_BUS_REG(sbus->chip->core_base[SDIOD_CORE_ID],
intstatus), sbus->intstatus);
}
/* On frame indication, read available frames */
if (sbus->intstatus & I_HMB_FRAME_IND)
{
do
{
ret = bcmf_sdpcm_readframe(priv);
}
while (ret == OK);
if (ret == -ENODATA)
{
/* All frames processed */
sbus->intstatus &= ~I_HMB_FRAME_IND;
}
}
/* Send all queued frames */
do
{
ret = bcmf_sdpcm_sendframe(priv);
}
while (ret == OK);
/* Check if RX frames are available */
if (sbus->intstatus & I_HMB_FRAME_IND)
{
/* Try again */
wlinfo("Try read again\n");
continue;
}
/* Re-configure the board GPIO interrupt pin */
bcmf_board_setup_oob_irq(sbus->minor, bcmf_oob_irq, (void *)sbus);
/* If we're done for now, turn off clock request. */
#if 0
/* TODO add wakelock */
bcmf_sdio_bus_sleep(sbus, true);
#endif
}
wlinfo("Exit\n");
return 0;
}
struct bcmf_sdio_frame *bcmf_sdio_allocate_frame(FAR struct bcmf_dev_s *priv,
bool block, bool tx)
{
FAR struct bcmf_sdio_dev_s *sbus = (FAR struct bcmf_sdio_dev_s *)priv->bus;
struct bcmf_sdio_frame *sframe;
dq_entry_t *entry = NULL;
while (1)
{
if (nxsem_wait(&sbus->queue_mutex) < 0)
{
DEBUGPANIC();
}
#if 0
if (!tx || sbus->tx_queue_count < BCMF_PKT_POOL_SIZE - 1)
#endif
{
if ((entry = bcmf_dqueue_pop_tail(&sbus->free_queue)) != NULL)
{
if (tx)
{
sbus->tx_queue_count += 1;
}
nxsem_post(&sbus->queue_mutex);
break;
}
}
nxsem_post(&sbus->queue_mutex);
if (block)
{
/* TODO use signaling semaphore */
wlinfo("alloc failed %d\n", tx);
up_mdelay(100);
continue;
}
wlinfo("No avail buffer\n");
return NULL;
}
sframe = container_of(entry, struct bcmf_sdio_frame, list_entry);
sframe->header.len = HEADER_SIZE + MAX_NETDEV_PKTSIZE;
sframe->header.base = sframe->data;
sframe->header.data = sframe->data;
sframe->tx = tx;
return sframe;
}
void bcmf_sdio_free_frame(FAR struct bcmf_dev_s *priv,
struct bcmf_sdio_frame *sframe)
{
FAR struct bcmf_sdio_dev_s *sbus = (FAR struct bcmf_sdio_dev_s *)priv->bus;
if (nxsem_wait(&sbus->queue_mutex) < 0)
{
DEBUGPANIC();
}
bcmf_dqueue_push(&sbus->free_queue, &sframe->list_entry);
if (sframe->tx)
{
sbus->tx_queue_count -= 1;
}
nxsem_post(&sbus->queue_mutex);
}
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