diff options
Diffstat (limited to 'drivers/net/wireless/bcmdhd/dhd_cfg80211.c')
| -rw-r--r-- | drivers/net/wireless/bcmdhd/dhd_cfg80211.c | 655 |
1 files changed, 655 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcmdhd/dhd_cfg80211.c b/drivers/net/wireless/bcmdhd/dhd_cfg80211.c new file mode 100644 index 0000000..970216e --- /dev/null +++ b/drivers/net/wireless/bcmdhd/dhd_cfg80211.c @@ -0,0 +1,655 @@ +/* + * Linux cfg80211 driver - Dongle Host Driver (DHD) related + * + * Copyright (C) 1999-2011, Broadcom Corporation + * + * Unless you and Broadcom execute a separate written software license + * agreement governing use of this software, this software is licensed to you + * under the terms of the GNU General Public License version 2 (the "GPL"), + * available at http://www.broadcom.com/licenses/GPLv2.php, with the + * following added to such license: + * + * As a special exception, the copyright holders of this software give you + * permission to link this software with independent modules, and to copy and + * distribute the resulting executable under terms of your choice, provided that + * you also meet, for each linked independent module, the terms and conditions of + * the license of that module. An independent module is a module which is not + * derived from this software. The special exception does not apply to any + * modifications of the software. + * + * Notwithstanding the above, under no circumstances may you combine this + * software in any way with any other Broadcom software provided under a license + * other than the GPL, without Broadcom's express prior written consent. + * + * $Id: wl_cfg80211.c,v 1.1.4.1.2.14 2011/02/09 01:40:07 Exp $ + */ + +#include <net/rtnetlink.h> + +#include <bcmutils.h> +#include <wldev_common.h> +#include <wl_cfg80211.h> +#include <dhd_cfg80211.h> +extern struct wl_priv *wlcfg_drv_priv; +static int dhd_dongle_up = FALSE; + +#include <dngl_stats.h> +#include <dhd.h> +#include <dhdioctl.h> +#include <wlioctl.h> +#include <dhd_cfg80211.h> + +static s32 wl_dongle_up(struct net_device *ndev, u32 up); + +/** + * Function implementations + */ + +s32 dhd_cfg80211_init(struct wl_priv *wl) +{ + dhd_dongle_up = FALSE; + return 0; +} + +s32 dhd_cfg80211_deinit(struct wl_priv *wl) +{ + dhd_dongle_up = FALSE; + return 0; +} + +s32 dhd_cfg80211_get_opmode(struct wl_priv *wl) +{ + dhd_pub_t *dhd = (dhd_pub_t *)(wl->pub); + return dhd->op_mode; +} + +s32 dhd_cfg80211_down(struct wl_priv *wl) +{ + dhd_dongle_up = FALSE; + return 0; +} + +s32 dhd_cfg80211_set_p2p_info(struct wl_priv *wl, int val) +{ + dhd_pub_t *dhd = (dhd_pub_t *)(wl->pub); + int bcn_timeout = DHD_BEACON_TIMEOUT_HIGH; + char iovbuf[30]; + + dhd->op_mode |= val; + WL_ERR(("Set : op_mode=%d\n", dhd->op_mode)); + +#ifdef ARP_OFFLOAD_SUPPORT + /* IF P2P is enabled, disable arpoe */ + dhd_arp_offload_set(dhd, 0); + dhd_arp_offload_enable(dhd, false); +#endif /* ARP_OFFLOAD_SUPPORT */ + + dhd_os_set_packet_filter(dhd, 0); + + /* Setup timeout if Beacons are lost and roam is off to report link down */ + bcm_mkiovar("bcn_timeout", (char *)&bcn_timeout, 4, iovbuf, sizeof(iovbuf)); + dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0); + + + return 0; +} + +s32 dhd_cfg80211_clean_p2p_info(struct wl_priv *wl) +{ + dhd_pub_t *dhd = (dhd_pub_t *)(wl->pub); + int bcn_timeout = DHD_BEACON_TIMEOUT_NORMAL; + char iovbuf[30]; + + dhd->op_mode &= ~CONCURENT_MASK; + WL_ERR(("Clean : op_mode=%d\n", dhd->op_mode)); + +#ifdef ARP_OFFLOAD_SUPPORT + /* IF P2P is disabled, enable arpoe back for STA mode. */ + dhd_arp_offload_set(dhd, dhd_arp_mode); + dhd_arp_offload_enable(dhd, true); +#endif /* ARP_OFFLOAD_SUPPORT */ + + dhd_os_set_packet_filter(dhd, 1); + + /* Setup timeout if Beacons are lost and roam is off to report link down */ + bcm_mkiovar("bcn_timeout", (char *)&bcn_timeout, 4, iovbuf, sizeof(iovbuf)); + dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0); + + return 0; +} + +static s32 wl_dongle_up(struct net_device *ndev, u32 up) +{ + s32 err = 0; + + err = wldev_ioctl(ndev, WLC_UP, &up, sizeof(up), true); + if (unlikely(err)) { + WL_ERR(("WLC_UP error (%d)\n", err)); + } + return err; +} + +s32 dhd_config_dongle(struct wl_priv *wl, bool need_lock) +{ +#ifndef DHD_SDALIGN +#define DHD_SDALIGN 32 +#endif + struct net_device *ndev; + s32 err = 0; + + WL_TRACE(("In\n")); + if (dhd_dongle_up) { + WL_ERR(("Dongle is already up\n")); + return err; + } + + ndev = wl_to_prmry_ndev(wl); + + if (need_lock) + rtnl_lock(); + + err = wl_dongle_up(ndev, 0); + if (unlikely(err)) { + WL_ERR(("wl_dongle_up failed\n")); + goto default_conf_out; + } + dhd_dongle_up = true; + +default_conf_out: + if (need_lock) + rtnl_unlock(); + return err; + +} + + +/* TODO: clean up the BT-Coex code, it still have some legacy ioctl/iovar functions */ +#define COEX_DHCP + +#if defined(COEX_DHCP) + +/* use New SCO/eSCO smart YG suppression */ +#define BT_DHCP_eSCO_FIX +/* this flag boost wifi pkt priority to max, caution: -not fair to sco */ +#define BT_DHCP_USE_FLAGS +/* T1 start SCO/ESCo priority suppression */ +#define BT_DHCP_OPPR_WIN_TIME 2500 +/* T2 turn off SCO/SCO supperesion is (timeout) */ +#define BT_DHCP_FLAG_FORCE_TIME 5500 + +enum wl_cfg80211_btcoex_status { + BT_DHCP_IDLE, + BT_DHCP_START, + BT_DHCP_OPPR_WIN, + BT_DHCP_FLAG_FORCE_TIMEOUT +}; + +/* + * get named driver variable to uint register value and return error indication + * calling example: dev_wlc_intvar_get_reg(dev, "btc_params",66, ®_value) + */ +static int +dev_wlc_intvar_get_reg(struct net_device *dev, char *name, + uint reg, int *retval) +{ + union { + char buf[WLC_IOCTL_SMLEN]; + int val; + } var; + int error; + + bcm_mkiovar(name, (char *)(®), sizeof(reg), + (char *)(&var), sizeof(var.buf)); + error = wldev_ioctl(dev, WLC_GET_VAR, (char *)(&var), sizeof(var.buf), false); + + *retval = dtoh32(var.val); + return (error); +} + +static int +dev_wlc_bufvar_set(struct net_device *dev, char *name, char *buf, int len) +{ +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31) + char ioctlbuf_local[1024]; +#else + static char ioctlbuf_local[1024]; +#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31) */ + + bcm_mkiovar(name, buf, len, ioctlbuf_local, sizeof(ioctlbuf_local)); + + return (wldev_ioctl(dev, WLC_SET_VAR, ioctlbuf_local, sizeof(ioctlbuf_local), true)); +} +/* +get named driver variable to uint register value and return error indication +calling example: dev_wlc_intvar_set_reg(dev, "btc_params",66, value) +*/ +static int +dev_wlc_intvar_set_reg(struct net_device *dev, char *name, char *addr, char * val) +{ + char reg_addr[8]; + + memset(reg_addr, 0, sizeof(reg_addr)); + memcpy((char *)®_addr[0], (char *)addr, 4); + memcpy((char *)®_addr[4], (char *)val, 4); + + return (dev_wlc_bufvar_set(dev, name, (char *)®_addr[0], sizeof(reg_addr))); +} + +static bool btcoex_is_sco_active(struct net_device *dev) +{ + int ioc_res = 0; + bool res = FALSE; + int sco_id_cnt = 0; + int param27; + int i; + + for (i = 0; i < 12; i++) { + + ioc_res = dev_wlc_intvar_get_reg(dev, "btc_params", 27, ¶m27); + + WL_TRACE(("%s, sample[%d], btc params: 27:%x\n", + __FUNCTION__, i, param27)); + + if (ioc_res < 0) { + WL_ERR(("%s ioc read btc params error\n", __FUNCTION__)); + break; + } + + if ((param27 & 0x6) == 2) { /* count both sco & esco */ + sco_id_cnt++; + } + + if (sco_id_cnt > 2) { + WL_TRACE(("%s, sco/esco detected, pkt id_cnt:%d samples:%d\n", + __FUNCTION__, sco_id_cnt, i)); + res = TRUE; + break; + } + + msleep(5); + } + + return res; +} + +#if defined(BT_DHCP_eSCO_FIX) +/* Enhanced BT COEX settings for eSCO compatibility during DHCP window */ +static int set_btc_esco_params(struct net_device *dev, bool trump_sco) +{ + static bool saved_status = FALSE; + + char buf_reg50va_dhcp_on[8] = + { 50, 00, 00, 00, 0x22, 0x80, 0x00, 0x00 }; + char buf_reg51va_dhcp_on[8] = + { 51, 00, 00, 00, 0x00, 0x00, 0x00, 0x00 }; + char buf_reg64va_dhcp_on[8] = + { 64, 00, 00, 00, 0x00, 0x00, 0x00, 0x00 }; + char buf_reg65va_dhcp_on[8] = + { 65, 00, 00, 00, 0x00, 0x00, 0x00, 0x00 }; + char buf_reg71va_dhcp_on[8] = + { 71, 00, 00, 00, 0x00, 0x00, 0x00, 0x00 }; + uint32 regaddr; + static uint32 saved_reg50; + static uint32 saved_reg51; + static uint32 saved_reg64; + static uint32 saved_reg65; + static uint32 saved_reg71; + + if (trump_sco) { + /* this should reduce eSCO agressive retransmit + * w/o breaking it + */ + + /* 1st save current */ + WL_TRACE(("Do new SCO/eSCO coex algo {save &" + "override}\n")); + if ((!dev_wlc_intvar_get_reg(dev, "btc_params", 50, &saved_reg50)) && + (!dev_wlc_intvar_get_reg(dev, "btc_params", 51, &saved_reg51)) && + (!dev_wlc_intvar_get_reg(dev, "btc_params", 64, &saved_reg64)) && + (!dev_wlc_intvar_get_reg(dev, "btc_params", 65, &saved_reg65)) && + (!dev_wlc_intvar_get_reg(dev, "btc_params", 71, &saved_reg71))) { + saved_status = TRUE; + WL_TRACE(("%s saved bt_params[50,51,64,65,71]:" + "0x%x 0x%x 0x%x 0x%x 0x%x\n", + __FUNCTION__, saved_reg50, saved_reg51, + saved_reg64, saved_reg65, saved_reg71)); + } else { + WL_ERR((":%s: save btc_params failed\n", + __FUNCTION__)); + saved_status = FALSE; + return -1; + } + + WL_TRACE(("override with [50,51,64,65,71]:" + "0x%x 0x%x 0x%x 0x%x 0x%x\n", + *(u32 *)(buf_reg50va_dhcp_on+4), + *(u32 *)(buf_reg51va_dhcp_on+4), + *(u32 *)(buf_reg64va_dhcp_on+4), + *(u32 *)(buf_reg65va_dhcp_on+4), + *(u32 *)(buf_reg71va_dhcp_on+4))); + + dev_wlc_bufvar_set(dev, "btc_params", + (char *)&buf_reg50va_dhcp_on[0], 8); + dev_wlc_bufvar_set(dev, "btc_params", + (char *)&buf_reg51va_dhcp_on[0], 8); + dev_wlc_bufvar_set(dev, "btc_params", + (char *)&buf_reg64va_dhcp_on[0], 8); + dev_wlc_bufvar_set(dev, "btc_params", + (char *)&buf_reg65va_dhcp_on[0], 8); + dev_wlc_bufvar_set(dev, "btc_params", + (char *)&buf_reg71va_dhcp_on[0], 8); + + saved_status = TRUE; + } else if (saved_status) { + /* restore previously saved bt params */ + WL_TRACE(("Do new SCO/eSCO coex algo {save &" + "override}\n")); + + regaddr = 50; + dev_wlc_intvar_set_reg(dev, "btc_params", + (char *)®addr, (char *)&saved_reg50); + regaddr = 51; + dev_wlc_intvar_set_reg(dev, "btc_params", + (char *)®addr, (char *)&saved_reg51); + regaddr = 64; + dev_wlc_intvar_set_reg(dev, "btc_params", + (char *)®addr, (char *)&saved_reg64); + regaddr = 65; + dev_wlc_intvar_set_reg(dev, "btc_params", + (char *)®addr, (char *)&saved_reg65); + regaddr = 71; + dev_wlc_intvar_set_reg(dev, "btc_params", + (char *)®addr, (char *)&saved_reg71); + + WL_TRACE(("restore bt_params[50,51,64,65,71]:" + "0x%x 0x%x 0x%x 0x%x 0x%x\n", + saved_reg50, saved_reg51, saved_reg64, + saved_reg65, saved_reg71)); + + saved_status = FALSE; + } else { + WL_ERR((":%s att to restore not saved BTCOEX params\n", + __FUNCTION__)); + return -1; + } + return 0; +} +#endif /* BT_DHCP_eSCO_FIX */ + +static void +wl_cfg80211_bt_setflag(struct net_device *dev, bool set) +{ +#if defined(BT_DHCP_USE_FLAGS) + char buf_flag7_dhcp_on[8] = { 7, 00, 00, 00, 0x1, 0x0, 0x00, 0x00 }; + char buf_flag7_default[8] = { 7, 00, 00, 00, 0x0, 0x00, 0x00, 0x00}; +#endif + + +#if defined(BT_DHCP_eSCO_FIX) + /* set = 1, save & turn on 0 - off & restore prev settings */ + set_btc_esco_params(dev, set); +#endif + +#if defined(BT_DHCP_USE_FLAGS) + WL_TRACE(("WI-FI priority boost via bt flags, set:%d\n", set)); + if (set == TRUE) + /* Forcing bt_flag7 */ + dev_wlc_bufvar_set(dev, "btc_flags", + (char *)&buf_flag7_dhcp_on[0], + sizeof(buf_flag7_dhcp_on)); + else + /* Restoring default bt flag7 */ + dev_wlc_bufvar_set(dev, "btc_flags", + (char *)&buf_flag7_default[0], + sizeof(buf_flag7_default)); +#endif +} + +static void wl_cfg80211_bt_timerfunc(ulong data) +{ + struct btcoex_info *bt_local = (struct btcoex_info *)data; + WL_TRACE(("%s\n", __FUNCTION__)); + bt_local->timer_on = 0; + schedule_work(&bt_local->work); +} + +static void wl_cfg80211_bt_handler(struct work_struct *work) +{ + struct btcoex_info *btcx_inf; + + btcx_inf = container_of(work, struct btcoex_info, work); + + if (btcx_inf->timer_on) { + btcx_inf->timer_on = 0; + del_timer_sync(&btcx_inf->timer); + } + + switch (btcx_inf->bt_state) { + case BT_DHCP_START: + /* DHCP started + * provide OPPORTUNITY window to get DHCP address + */ + WL_TRACE(("%s bt_dhcp stm: started \n", + __FUNCTION__)); + btcx_inf->bt_state = BT_DHCP_OPPR_WIN; + mod_timer(&btcx_inf->timer, + jiffies + msecs_to_jiffies(BT_DHCP_OPPR_WIN_TIME)); + btcx_inf->timer_on = 1; + break; + + case BT_DHCP_OPPR_WIN: + if (btcx_inf->dhcp_done) { + WL_TRACE(("%s DHCP Done before T1 expiration\n", + __FUNCTION__)); + goto btc_coex_idle; + } + + /* DHCP is not over yet, start lowering BT priority + * enforce btc_params + flags if necessary + */ + WL_TRACE(("%s DHCP T1:%d expired\n", __FUNCTION__, + BT_DHCP_OPPR_WIN_TIME)); + if (btcx_inf->dev) + wl_cfg80211_bt_setflag(btcx_inf->dev, TRUE); + btcx_inf->bt_state = BT_DHCP_FLAG_FORCE_TIMEOUT; + mod_timer(&btcx_inf->timer, + jiffies + msecs_to_jiffies(BT_DHCP_FLAG_FORCE_TIME)); + btcx_inf->timer_on = 1; + break; + + case BT_DHCP_FLAG_FORCE_TIMEOUT: + if (btcx_inf->dhcp_done) { + WL_TRACE(("%s DHCP Done before T2 expiration\n", + __FUNCTION__)); + } else { + /* Noo dhcp during T1+T2, restore BT priority */ + WL_TRACE(("%s DHCP wait interval T2:%d" + "msec expired\n", __FUNCTION__, + BT_DHCP_FLAG_FORCE_TIME)); + } + + /* Restoring default bt priority */ + if (btcx_inf->dev) + wl_cfg80211_bt_setflag(btcx_inf->dev, FALSE); +btc_coex_idle: + btcx_inf->bt_state = BT_DHCP_IDLE; + btcx_inf->timer_on = 0; + break; + + default: + WL_ERR(("%s error g_status=%d !!!\n", __FUNCTION__, + btcx_inf->bt_state)); + if (btcx_inf->dev) + wl_cfg80211_bt_setflag(btcx_inf->dev, FALSE); + btcx_inf->bt_state = BT_DHCP_IDLE; + btcx_inf->timer_on = 0; + break; + } + + net_os_wake_unlock(btcx_inf->dev); +} + +int wl_cfg80211_btcoex_init(struct wl_priv *wl) +{ + struct btcoex_info *btco_inf = NULL; + + btco_inf = kmalloc(sizeof(struct btcoex_info), GFP_KERNEL); + if (!btco_inf) + return -ENOMEM; + + btco_inf->bt_state = BT_DHCP_IDLE; + btco_inf->ts_dhcp_start = 0; + btco_inf->ts_dhcp_ok = 0; + /* Set up timer for BT */ + btco_inf->timer_ms = 10; + init_timer(&btco_inf->timer); + btco_inf->timer.data = (ulong)btco_inf; + btco_inf->timer.function = wl_cfg80211_bt_timerfunc; + + btco_inf->dev = wl->wdev->netdev; + + INIT_WORK(&btco_inf->work, wl_cfg80211_bt_handler); + + wl->btcoex_info = btco_inf; + return 0; +} + +void wl_cfg80211_btcoex_deinit(struct wl_priv *wl) +{ + if (!wl->btcoex_info) + return; + + if (!wl->btcoex_info->timer_on) { + wl->btcoex_info->timer_on = 0; + del_timer_sync(&wl->btcoex_info->timer); + } + + cancel_work_sync(&wl->btcoex_info->work); + + kfree(wl->btcoex_info); + wl->btcoex_info = NULL; +} + +int wl_cfg80211_set_btcoex_dhcp(struct net_device *dev, char *command) +{ + + struct wl_priv *wl = wlcfg_drv_priv; + char powermode_val = 0; + char buf_reg66va_dhcp_on[8] = { 66, 00, 00, 00, 0x10, 0x27, 0x00, 0x00 }; + char buf_reg41va_dhcp_on[8] = { 41, 00, 00, 00, 0x33, 0x00, 0x00, 0x00 }; + char buf_reg68va_dhcp_on[8] = { 68, 00, 00, 00, 0x90, 0x01, 0x00, 0x00 }; + + uint32 regaddr; + static uint32 saved_reg66; + static uint32 saved_reg41; + static uint32 saved_reg68; + static bool saved_status = FALSE; + +#ifdef COEX_DHCP + char buf_flag7_default[8] = { 7, 00, 00, 00, 0x0, 0x00, 0x00, 0x00}; + struct btcoex_info *btco_inf = wl->btcoex_info; +#endif /* COEX_DHCP */ + + /* Figure out powermode 1 or o command */ + strncpy((char *)&powermode_val, command + strlen("BTCOEXMODE") +1, 1); + + if (strnicmp((char *)&powermode_val, "1", strlen("1")) == 0) { + + WL_TRACE(("%s: DHCP session starts\n", __FUNCTION__)); + + /* Retrieve and saved orig regs value */ + if ((saved_status == FALSE) && + (!dev_wlc_intvar_get_reg(dev, "btc_params", 66, &saved_reg66)) && + (!dev_wlc_intvar_get_reg(dev, "btc_params", 41, &saved_reg41)) && + (!dev_wlc_intvar_get_reg(dev, "btc_params", 68, &saved_reg68))) { + saved_status = TRUE; + WL_TRACE(("Saved 0x%x 0x%x 0x%x\n", + saved_reg66, saved_reg41, saved_reg68)); + + /* Disable PM mode during dhpc session */ + + /* Disable PM mode during dhpc session */ +#ifdef COEX_DHCP + /* Start BT timer only for SCO connection */ + if (btcoex_is_sco_active(dev)) { + /* btc_params 66 */ + dev_wlc_bufvar_set(dev, "btc_params", + (char *)&buf_reg66va_dhcp_on[0], + sizeof(buf_reg66va_dhcp_on)); + /* btc_params 41 0x33 */ + dev_wlc_bufvar_set(dev, "btc_params", + (char *)&buf_reg41va_dhcp_on[0], + sizeof(buf_reg41va_dhcp_on)); + /* btc_params 68 0x190 */ + dev_wlc_bufvar_set(dev, "btc_params", + (char *)&buf_reg68va_dhcp_on[0], + sizeof(buf_reg68va_dhcp_on)); + saved_status = TRUE; + + btco_inf->bt_state = BT_DHCP_START; + btco_inf->timer_on = 1; + mod_timer(&btco_inf->timer, btco_inf->timer.expires); + WL_TRACE(("%s enable BT DHCP Timer\n", + __FUNCTION__)); + } +#endif /* COEX_DHCP */ + } + else if (saved_status == TRUE) { + WL_ERR(("%s was called w/o DHCP OFF. Continue\n", __FUNCTION__)); + } + } + else if (strnicmp((char *)&powermode_val, "2", strlen("2")) == 0) { + + + /* Restoring PM mode */ + +#ifdef COEX_DHCP + /* Stop any bt timer because DHCP session is done */ + WL_TRACE(("%s disable BT DHCP Timer\n", __FUNCTION__)); + if (btco_inf->timer_on) { + btco_inf->timer_on = 0; + del_timer_sync(&btco_inf->timer); + + if (btco_inf->bt_state != BT_DHCP_IDLE) { + /* need to restore original btc flags & extra btc params */ + WL_TRACE(("%s bt->bt_state:%d\n", + __FUNCTION__, btco_inf->bt_state)); + /* wake up btcoex thread to restore btlags+params */ + schedule_work(&btco_inf->work); + } + } + + /* Restoring btc_flag paramter anyway */ + if (saved_status == TRUE) + dev_wlc_bufvar_set(dev, "btc_flags", + (char *)&buf_flag7_default[0], sizeof(buf_flag7_default)); +#endif /* COEX_DHCP */ + + /* Restore original values */ + if (saved_status == TRUE) { + regaddr = 66; + dev_wlc_intvar_set_reg(dev, "btc_params", + (char *)®addr, (char *)&saved_reg66); + regaddr = 41; + dev_wlc_intvar_set_reg(dev, "btc_params", + (char *)®addr, (char *)&saved_reg41); + regaddr = 68; + dev_wlc_intvar_set_reg(dev, "btc_params", + (char *)®addr, (char *)&saved_reg68); + + WL_TRACE(("restore regs {66,41,68} <- 0x%x 0x%x 0x%x\n", + saved_reg66, saved_reg41, saved_reg68)); + } + saved_status = FALSE; + + } + else { + WL_ERR(("%s Unkwown yet power setting, ignored\n", + __FUNCTION__)); + } + + snprintf(command, 3, "OK"); + + return (strlen("OK")); +} +#endif |