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c0862c862f
nuttx/drivers/wireless/ieee80211/bcmf_driver.c
Simon Piriou c0862c862f photon: cleanup and refactor bcmf driver
2017-04-23 23:39:17 +02:00

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/****************************************************************************
* drivers/wireless/ieee80211/bcmf_driver.c
*
* Copyright (C) 2017 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 <string.h>
#include <debug.h>
#include <errno.h>
#include <nuttx/kmalloc.h>
#include "bcmf_driver.h"
#include "bcmf_cdc.h"
#include "bcmf_ioctl.h"
#include <nuttx/sdio.h>
#include "bcmf_sdio.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
// TODO move elsewhere
#define DOT11_BSSTYPE_ANY 2
#define WL_SCAN_CHANNEL_TIME 40
#define WL_SCAN_UNASSOC_TIME 40
#define WL_SCAN_PASSIVE_TIME 120
/* Chip interfaces */
#define CHIP_STA_INTERFACE 0
#define CHIP_AP_INTERFACE 1
#define CHIP_P2P_INTERFACE 2
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static FAR struct bcmf_dev_s* bcmf_allocate_device(void);
static void bcmf_free_device(FAR struct bcmf_dev_s *priv);
#if 0
static int bcmf_run_escan(FAR struct bcmf_dev_s *priv);
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
FAR struct bcmf_dev_s* bcmf_allocate_device(void)
{
int ret;
FAR struct bcmf_dev_s *priv;
/* Allocate a bcmf device structure */
priv = (FAR struct bcmf_dev_s *)kmm_malloc(sizeof(*priv));
if (!priv)
{
return NULL;
}
/* Initialize bcmf device structure */
memset(priv, 0, sizeof(*priv));
/* Init control frames mutex and timeout signal */
if ((ret = sem_init(&priv->control_mutex, 0, 1)) != OK)
{
goto exit_free_priv;
}
if ((ret = sem_init(&priv->control_timeout, 0, 0)) != OK)
{
goto exit_free_priv;
}
if ((ret = sem_setprotocol(&priv->control_timeout, SEM_PRIO_NONE)) != OK)
{
goto exit_free_priv;
}
return priv;
exit_free_priv:
kmm_free(priv);
return NULL;
}
void bcmf_free_device(FAR struct bcmf_dev_s *priv)
{
/* TODO deinitialize device structures */
kmm_free(priv);
}
int bcmf_wl_set_mac_address(FAR struct bcmf_dev_s *priv, uint8_t *addr)
{
int ret;
uint32_t out_len = 6;
ret = bcmf_cdc_iovar_request(priv, CHIP_STA_INTERFACE, true,
IOVAR_STR_CUR_ETHERADDR, addr,
&out_len);
if (ret != OK)
{
return ret;
}
_info("MAC address updated %02X:%02X:%02X:%02X:%02X:%02X\n",
addr[0], addr[1], addr[2],
addr[3], addr[4], addr[5]);
memcpy(priv->mac_addr, addr, 6);
return OK;
}
int bcmf_wl_enable(FAR struct bcmf_dev_s *priv, bool enable)
{
int ret;
uint32_t out_len;
/* TODO chek device state */
out_len = 0;
ret = bcmf_cdc_ioctl(priv, CHIP_STA_INTERFACE, true,
enable ? WLC_UP : WLC_DOWN, NULL, &out_len);
if (ret == OK)
{
/* TODO update device state */
}
return ret;
}
int bcmf_dongle_scantime(FAR struct bcmf_dev_s *priv, int32_t scan_assoc_time,
int32_t scan_unassoc_time, int32_t scan_passive_time)
{
int ret;
uint32_t out_len, value;
out_len = 4;
value = scan_assoc_time;
ret = bcmf_cdc_ioctl(priv, CHIP_STA_INTERFACE, true,
WLC_SET_SCAN_CHANNEL_TIME, (uint8_t*)&value,
&out_len);
if (ret != OK)
{
return -EIO;
}
out_len = 4;
value = scan_unassoc_time;
ret = bcmf_cdc_ioctl(priv, CHIP_STA_INTERFACE, true,
WLC_SET_SCAN_UNASSOC_TIME, (uint8_t*)&value,
&out_len);
if (ret != OK)
{
return -EIO;
}
out_len = 4;
value = scan_passive_time;
ret = bcmf_cdc_ioctl(priv, CHIP_STA_INTERFACE, true,
WLC_SET_SCAN_PASSIVE_TIME, (uint8_t*)&value,
&out_len);
if (ret != OK)
{
return -EIO;
}
return OK;
}
int bcmf_dongle_initialize(FAR struct bcmf_dev_s *priv)
{
int ret;
uint32_t out_len;
uint32_t value;
ret = bcmf_wl_enable(priv, true);
if (ret)
{
return ret;
}
ret = bcmf_dongle_scantime(priv, WL_SCAN_CHANNEL_TIME,
WL_SCAN_UNASSOC_TIME, WL_SCAN_PASSIVE_TIME);
if (ret)
{
return ret;
}
/* FIXME disable power save mode */
out_len = 4;
value = 0;
ret = bcmf_cdc_ioctl(priv, CHIP_STA_INTERFACE, true,
WLC_SET_PM, (uint8_t*)&value, &out_len);
if (ret != OK)
{
return ret;
}
/* Set the GMode */
out_len = 4;
value = GMODE_AUTO;
ret = bcmf_cdc_ioctl(priv, CHIP_STA_INTERFACE, true,
WLC_SET_GMODE, (uint8_t*)&value, &out_len);
if (ret != OK)
{
return ret;
}
/* TODO configure roaming if needed. Disable for now */
out_len = 4;
value = 1;
ret = bcmf_cdc_iovar_request(priv, CHIP_STA_INTERFACE, true,
IOVAR_STR_ROAM_OFF, (uint8_t*)&value,
&out_len);
// FIXME remove
#if 0
/* Try scan */
value = 0;
out_len = 4;
ret = bcmf_cdc_ioctl(priv, CHIP_STA_INTERFACE, true,
WLC_SET_PASSIVE_SCAN, (uint8_t*)&value, &out_len);
bcmf_run_escan(priv);
#endif
return ret;
}
#if 0
int bcmf_run_escan(FAR struct bcmf_dev_s *priv)
{
int ret;
uint32_t out_len;
/* Default request structure */
struct wl_escan_params *params =
(struct wl_escan_params*)kmm_malloc(sizeof(*params));
if (!params)
{
return -ENOMEM;
}
memset(params, 0, sizeof(*params));
params->version = ESCAN_REQ_VERSION;
params->action = WL_SCAN_ACTION_START;
params->sync_id = 0x1234;
memset(&params->params.bssid, 0xFF, sizeof(params->params.bssid));
params->params.bss_type = DOT11_BSSTYPE_ANY;
params->params.scan_type = 0; /* Active scan */
params->params.nprobes = -1;
params->params.active_time = -1;
params->params.passive_time = -1;
params->params.home_time = -1;
params->params.channel_num = 0;
_info("start scan\n");
out_len = sizeof(*params);
ret = bcmf_cdc_iovar_request(priv, CHIP_STA_INTERFACE, true,
IOVAR_STR_ESCAN, (uint8_t*)params,
&out_len);
free(params);
if (ret != OK)
{
return -EIO;
}
return OK;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
int bcmf_wl_initialize(FAR struct bcmf_dev_s *priv)
{
int ret;
uint32_t out_len;
uint8_t tmp_buf[64];
/* Disable TX Gloming feature */
out_len = 4;
*(uint32_t*)tmp_buf = 0;
ret = bcmf_cdc_iovar_request(priv, CHIP_STA_INTERFACE, false,
IOVAR_STR_TX_GLOM, tmp_buf,
&out_len);
if (ret != OK)
{
return -EIO;
}
/* Query MAC address */
out_len = 6;
ret = bcmf_cdc_iovar_request(priv, CHIP_STA_INTERFACE, false,
IOVAR_STR_CUR_ETHERADDR, tmp_buf,
&out_len);
if (ret != OK)
{
return -EIO;
}
memcpy(priv->mac_addr, tmp_buf, 6);
_info("MAC address is %02X:%02X:%02X:%02X:%02X:%02X\n",
tmp_buf[0], tmp_buf[1], tmp_buf[2],
tmp_buf[3], tmp_buf[4], tmp_buf[5]);
/* Query firmware version string */
out_len = sizeof(tmp_buf);
ret = bcmf_cdc_iovar_request(priv, CHIP_STA_INTERFACE, false,
IOVAR_STR_VERSION, tmp_buf,
&out_len);
if (ret != OK)
{
return -EIO;
}
/* Remove line feed */
out_len = strlen((char*)tmp_buf);
if (out_len > 0 && tmp_buf[out_len-1] == '\n')
{
tmp_buf[out_len-1] = 0;
}
_info("fw version <%s>\n", tmp_buf);
/* FIXME Configure event mask to enable all asynchronous events */
uint8_t event_mask[16];
memset(event_mask, 0xff, sizeof(event_mask));
out_len = sizeof(event_mask);
ret = bcmf_cdc_iovar_request(priv, CHIP_STA_INTERFACE, true,
IOVAR_STR_EVENT_MSGS, event_mask,
&out_len);
if (ret != OK)
{
return -EIO;
}
// TODO Create a wlan device name and register network driver
return bcmf_dongle_initialize(priv);
}
int bcmf_sdio_initialize(int minor, FAR struct sdio_dev_s *dev)
{
int ret;
FAR struct bcmf_dev_s *priv;
_info("minor: %d\n", minor);
priv = bcmf_allocate_device();
if (!priv)
{
return -ENOMEM;
}
/* Init sdio bus */
ret = bcmf_bus_sdio_initialize(priv, minor, dev);
if (ret != OK)
{
ret = -EIO;
goto exit_free_device;
}
/* Bus initialized, register network driver */
return bcmf_wl_initialize(priv);
exit_free_device:
bcmf_free_device(priv);
return ret;
}
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