553 lines
15 KiB
C
Executable File
553 lines
15 KiB
C
Executable File
/*
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* Linux cfg80211 driver - Dongle Host Driver (DHD) related
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*
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* Copyright (C) 1999-2016, Broadcom Corporation
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*
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* Unless you and Broadcom execute a separate written software license
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* agreement governing use of this software, this software is licensed to you
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* under the terms of the GNU General Public License version 2 (the "GPL"),
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* available at http://www.broadcom.com/licenses/GPLv2.php, with the
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* following added to such license:
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*
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* As a special exception, the copyright holders of this software give you
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* permission to link this software with independent modules, and to copy and
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* distribute the resulting executable under terms of your choice, provided that
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* you also meet, for each linked independent module, the terms and conditions of
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* the license of that module. An independent module is a module which is not
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* derived from this software. The special exception does not apply to any
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* modifications of the software.
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*
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* Notwithstanding the above, under no circumstances may you combine this
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* software in any way with any other Broadcom software provided under a license
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* other than the GPL, without Broadcom's express prior written consent.
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*
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*
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* <<Broadcom-WL-IPTag/Open:>>
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*
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* $Id: wl_cfg_btcoex.c 514727 2014-11-12 03:02:48Z $
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*/
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#include <net/rtnetlink.h>
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#include <bcmutils.h>
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#include <wldev_common.h>
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#include <wl_cfg80211.h>
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#include <dhd_cfg80211.h>
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#include <dngl_stats.h>
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#include <dhd.h>
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#include <dhdioctl.h>
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#include <wlioctl.h>
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#ifdef PKT_FILTER_SUPPORT
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extern uint dhd_pkt_filter_enable;
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extern uint dhd_master_mode;
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extern void dhd_pktfilter_offload_enable(dhd_pub_t * dhd, char *arg, int enable, int master_mode);
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#endif
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struct btcoex_info {
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struct timer_list timer;
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u32 timer_ms;
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u32 timer_on;
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u32 ts_dhcp_start; /* ms ts ecord time stats */
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u32 ts_dhcp_ok; /* ms ts ecord time stats */
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bool dhcp_done; /* flag, indicates that host done with
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* dhcp before t1/t2 expiration
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*/
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s32 bt_state;
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struct work_struct work;
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struct net_device *dev;
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};
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static struct btcoex_info *btcoex_info_loc = NULL;
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/* TODO: clean up the BT-Coex code, it still have some legacy ioctl/iovar functions */
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/* use New SCO/eSCO smart YG suppression */
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#define BT_DHCP_eSCO_FIX
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/* this flag boost wifi pkt priority to max, caution: -not fair to sco */
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#define BT_DHCP_USE_FLAGS
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/* T1 start SCO/ESCo priority suppression */
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#define BT_DHCP_OPPR_WIN_TIME 2500
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/* T2 turn off SCO/SCO supperesion is (timeout) */
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#define BT_DHCP_FLAG_FORCE_TIME 5500
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enum wl_cfg80211_btcoex_status {
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BT_DHCP_IDLE,
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BT_DHCP_START,
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BT_DHCP_OPPR_WIN,
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BT_DHCP_FLAG_FORCE_TIMEOUT
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};
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/*
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* get named driver variable to uint register value and return error indication
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* calling example: dev_wlc_intvar_get_reg(dev, "btc_params",66, ®_value)
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*/
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static int
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dev_wlc_intvar_get_reg(struct net_device *dev, char *name,
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uint reg, int *retval)
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{
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union {
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char buf[WLC_IOCTL_SMLEN];
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int val;
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} var;
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int error;
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bcm_mkiovar(name, (char *)(®), sizeof(reg),
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(char *)(&var), sizeof(var.buf));
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error = wldev_ioctl(dev, WLC_GET_VAR, (char *)(&var), sizeof(var.buf), false);
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*retval = dtoh32(var.val);
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return (error);
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}
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static int
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dev_wlc_bufvar_set(struct net_device *dev, char *name, char *buf, int len)
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{
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31)
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char ioctlbuf_local[1024];
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#else
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static char ioctlbuf_local[1024];
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#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31) */
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bcm_mkiovar(name, buf, len, ioctlbuf_local, sizeof(ioctlbuf_local));
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return (wldev_ioctl(dev, WLC_SET_VAR, ioctlbuf_local, sizeof(ioctlbuf_local), true));
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}
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/*
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get named driver variable to uint register value and return error indication
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calling example: dev_wlc_intvar_set_reg(dev, "btc_params",66, value)
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*/
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static int
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dev_wlc_intvar_set_reg(struct net_device *dev, char *name, char *addr, char * val)
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{
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char reg_addr[8];
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memset(reg_addr, 0, sizeof(reg_addr));
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memcpy((char *)®_addr[0], (char *)addr, 4);
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memcpy((char *)®_addr[4], (char *)val, 4);
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return (dev_wlc_bufvar_set(dev, name, (char *)®_addr[0], sizeof(reg_addr)));
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}
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static bool btcoex_is_sco_active(struct net_device *dev)
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{
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int ioc_res = 0;
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bool res = FALSE;
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int sco_id_cnt = 0;
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int param27;
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int i;
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for (i = 0; i < 12; i++) {
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ioc_res = dev_wlc_intvar_get_reg(dev, "btc_params", 27, ¶m27);
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WL_TRACE(("sample[%d], btc params: 27:%x\n", i, param27));
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if (ioc_res < 0) {
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WL_ERR(("ioc read btc params error\n"));
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break;
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}
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if ((param27 & 0x6) == 2) { /* count both sco & esco */
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sco_id_cnt++;
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}
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if (sco_id_cnt > 2) {
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WL_TRACE(("sco/esco detected, pkt id_cnt:%d samples:%d\n",
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sco_id_cnt, i));
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res = TRUE;
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break;
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}
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OSL_SLEEP(5);
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}
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return res;
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}
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#if defined(BT_DHCP_eSCO_FIX)
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/* Enhanced BT COEX settings for eSCO compatibility during DHCP window */
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static int set_btc_esco_params(struct net_device *dev, bool trump_sco)
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{
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static bool saved_status = FALSE;
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char buf_reg50va_dhcp_on[8] =
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{ 50, 00, 00, 00, 0x22, 0x80, 0x00, 0x00 };
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char buf_reg51va_dhcp_on[8] =
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{ 51, 00, 00, 00, 0x00, 0x00, 0x00, 0x00 };
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char buf_reg64va_dhcp_on[8] =
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{ 64, 00, 00, 00, 0x00, 0x00, 0x00, 0x00 };
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char buf_reg65va_dhcp_on[8] =
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{ 65, 00, 00, 00, 0x00, 0x00, 0x00, 0x00 };
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char buf_reg71va_dhcp_on[8] =
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{ 71, 00, 00, 00, 0x00, 0x00, 0x00, 0x00 };
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uint32 regaddr;
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static uint32 saved_reg50;
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static uint32 saved_reg51;
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static uint32 saved_reg64;
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static uint32 saved_reg65;
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static uint32 saved_reg71;
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if (trump_sco) {
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/* this should reduce eSCO agressive retransmit
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* w/o breaking it
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*/
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/* 1st save current */
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WL_TRACE(("Do new SCO/eSCO coex algo {save &"
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"override}\n"));
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if ((!dev_wlc_intvar_get_reg(dev, "btc_params", 50, &saved_reg50)) &&
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(!dev_wlc_intvar_get_reg(dev, "btc_params", 51, &saved_reg51)) &&
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(!dev_wlc_intvar_get_reg(dev, "btc_params", 64, &saved_reg64)) &&
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(!dev_wlc_intvar_get_reg(dev, "btc_params", 65, &saved_reg65)) &&
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(!dev_wlc_intvar_get_reg(dev, "btc_params", 71, &saved_reg71))) {
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saved_status = TRUE;
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WL_TRACE(("saved bt_params[50,51,64,65,71]:"
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"0x%x 0x%x 0x%x 0x%x 0x%x\n",
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saved_reg50, saved_reg51,
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saved_reg64, saved_reg65, saved_reg71));
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} else {
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WL_ERR((":%s: save btc_params failed\n",
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__FUNCTION__));
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saved_status = FALSE;
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return -1;
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}
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WL_TRACE(("override with [50,51,64,65,71]:"
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"0x%x 0x%x 0x%x 0x%x 0x%x\n",
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*(u32 *)(buf_reg50va_dhcp_on+4),
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*(u32 *)(buf_reg51va_dhcp_on+4),
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*(u32 *)(buf_reg64va_dhcp_on+4),
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*(u32 *)(buf_reg65va_dhcp_on+4),
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*(u32 *)(buf_reg71va_dhcp_on+4)));
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dev_wlc_bufvar_set(dev, "btc_params",
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(char *)&buf_reg50va_dhcp_on[0], 8);
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dev_wlc_bufvar_set(dev, "btc_params",
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(char *)&buf_reg51va_dhcp_on[0], 8);
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dev_wlc_bufvar_set(dev, "btc_params",
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(char *)&buf_reg64va_dhcp_on[0], 8);
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dev_wlc_bufvar_set(dev, "btc_params",
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(char *)&buf_reg65va_dhcp_on[0], 8);
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dev_wlc_bufvar_set(dev, "btc_params",
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(char *)&buf_reg71va_dhcp_on[0], 8);
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saved_status = TRUE;
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} else if (saved_status) {
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/* restore previously saved bt params */
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WL_TRACE(("Do new SCO/eSCO coex algo {save &"
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"override}\n"));
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regaddr = 50;
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dev_wlc_intvar_set_reg(dev, "btc_params",
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(char *)®addr, (char *)&saved_reg50);
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regaddr = 51;
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dev_wlc_intvar_set_reg(dev, "btc_params",
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(char *)®addr, (char *)&saved_reg51);
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regaddr = 64;
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dev_wlc_intvar_set_reg(dev, "btc_params",
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(char *)®addr, (char *)&saved_reg64);
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regaddr = 65;
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dev_wlc_intvar_set_reg(dev, "btc_params",
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(char *)®addr, (char *)&saved_reg65);
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regaddr = 71;
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dev_wlc_intvar_set_reg(dev, "btc_params",
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(char *)®addr, (char *)&saved_reg71);
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WL_TRACE(("restore bt_params[50,51,64,65,71]:"
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"0x%x 0x%x 0x%x 0x%x 0x%x\n",
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saved_reg50, saved_reg51, saved_reg64,
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saved_reg65, saved_reg71));
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saved_status = FALSE;
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} else {
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WL_ERR((":%s att to restore not saved BTCOEX params\n",
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__FUNCTION__));
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return -1;
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}
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return 0;
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}
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#endif /* BT_DHCP_eSCO_FIX */
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static void
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wl_cfg80211_bt_setflag(struct net_device *dev, bool set)
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{
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#if defined(BT_DHCP_USE_FLAGS)
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char buf_flag7_dhcp_on[8] = { 7, 00, 00, 00, 0x1, 0x0, 0x00, 0x00 };
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char buf_flag7_default[8] = { 7, 00, 00, 00, 0x0, 0x00, 0x00, 0x00};
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#endif
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#if defined(BT_DHCP_eSCO_FIX)
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/* set = 1, save & turn on 0 - off & restore prev settings */
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set_btc_esco_params(dev, set);
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#endif
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#if defined(BT_DHCP_USE_FLAGS)
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WL_TRACE(("WI-FI priority boost via bt flags, set:%d\n", set));
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if (set == TRUE)
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/* Forcing bt_flag7 */
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dev_wlc_bufvar_set(dev, "btc_flags",
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(char *)&buf_flag7_dhcp_on[0],
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sizeof(buf_flag7_dhcp_on));
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else
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/* Restoring default bt flag7 */
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dev_wlc_bufvar_set(dev, "btc_flags",
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(char *)&buf_flag7_default[0],
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sizeof(buf_flag7_default));
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#endif
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}
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static void wl_cfg80211_bt_timerfunc(ulong data)
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{
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struct btcoex_info *bt_local = (struct btcoex_info *)data;
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WL_TRACE(("Enter\n"));
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bt_local->timer_on = 0;
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schedule_work(&bt_local->work);
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}
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static void wl_cfg80211_bt_handler(struct work_struct *work)
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{
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struct btcoex_info *btcx_inf;
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btcx_inf = container_of(work, struct btcoex_info, work);
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if (btcx_inf->timer_on) {
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btcx_inf->timer_on = 0;
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del_timer_sync(&btcx_inf->timer);
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}
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switch (btcx_inf->bt_state) {
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case BT_DHCP_START:
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/* DHCP started
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* provide OPPORTUNITY window to get DHCP address
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*/
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WL_TRACE(("bt_dhcp stm: started \n"));
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btcx_inf->bt_state = BT_DHCP_OPPR_WIN;
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mod_timer(&btcx_inf->timer,
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jiffies + msecs_to_jiffies(BT_DHCP_OPPR_WIN_TIME));
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btcx_inf->timer_on = 1;
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break;
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case BT_DHCP_OPPR_WIN:
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if (btcx_inf->dhcp_done) {
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WL_TRACE(("DHCP Done before T1 expiration\n"));
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goto btc_coex_idle;
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}
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/* DHCP is not over yet, start lowering BT priority
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* enforce btc_params + flags if necessary
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*/
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WL_TRACE(("DHCP T1:%d expired\n", BT_DHCP_OPPR_WIN_TIME));
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if (btcx_inf->dev)
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wl_cfg80211_bt_setflag(btcx_inf->dev, TRUE);
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btcx_inf->bt_state = BT_DHCP_FLAG_FORCE_TIMEOUT;
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mod_timer(&btcx_inf->timer,
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jiffies + msecs_to_jiffies(BT_DHCP_FLAG_FORCE_TIME));
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btcx_inf->timer_on = 1;
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break;
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case BT_DHCP_FLAG_FORCE_TIMEOUT:
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if (btcx_inf->dhcp_done) {
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WL_TRACE(("DHCP Done before T2 expiration\n"));
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} else {
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/* Noo dhcp during T1+T2, restore BT priority */
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WL_TRACE(("DHCP wait interval T2:%d msec expired\n",
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BT_DHCP_FLAG_FORCE_TIME));
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}
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/* Restoring default bt priority */
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if (btcx_inf->dev)
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wl_cfg80211_bt_setflag(btcx_inf->dev, FALSE);
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btc_coex_idle:
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btcx_inf->bt_state = BT_DHCP_IDLE;
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btcx_inf->timer_on = 0;
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break;
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default:
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WL_ERR(("error g_status=%d !!!\n", btcx_inf->bt_state));
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if (btcx_inf->dev)
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wl_cfg80211_bt_setflag(btcx_inf->dev, FALSE);
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btcx_inf->bt_state = BT_DHCP_IDLE;
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btcx_inf->timer_on = 0;
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break;
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}
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net_os_wake_unlock(btcx_inf->dev);
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}
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void* wl_cfg80211_btcoex_init(struct net_device *ndev)
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{
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struct btcoex_info *btco_inf = NULL;
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btco_inf = kmalloc(sizeof(struct btcoex_info), GFP_KERNEL);
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if (!btco_inf)
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return NULL;
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btco_inf->bt_state = BT_DHCP_IDLE;
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btco_inf->ts_dhcp_start = 0;
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btco_inf->ts_dhcp_ok = 0;
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/* Set up timer for BT */
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btco_inf->timer_ms = 10;
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init_timer(&btco_inf->timer);
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btco_inf->timer.data = (ulong)btco_inf;
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btco_inf->timer.function = wl_cfg80211_bt_timerfunc;
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btco_inf->dev = ndev;
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INIT_WORK(&btco_inf->work, wl_cfg80211_bt_handler);
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btcoex_info_loc = btco_inf;
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return btco_inf;
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}
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void wl_cfg80211_btcoex_deinit()
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{
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if (!btcoex_info_loc)
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return;
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if (btcoex_info_loc->timer_on) {
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btcoex_info_loc->timer_on = 0;
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del_timer_sync(&btcoex_info_loc->timer);
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}
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cancel_work_sync(&btcoex_info_loc->work);
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kfree(btcoex_info_loc);
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}
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int wl_cfg80211_set_btcoex_dhcp(struct net_device *dev, dhd_pub_t *dhd, char *command)
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{
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struct btcoex_info *btco_inf = btcoex_info_loc;
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char powermode_val = 0;
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char buf_reg66va_dhcp_on[8] = { 66, 00, 00, 00, 0x10, 0x27, 0x00, 0x00 };
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char buf_reg41va_dhcp_on[8] = { 41, 00, 00, 00, 0x33, 0x00, 0x00, 0x00 };
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char buf_reg68va_dhcp_on[8] = { 68, 00, 00, 00, 0x90, 0x01, 0x00, 0x00 };
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uint32 regaddr;
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static uint32 saved_reg66;
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static uint32 saved_reg41;
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static uint32 saved_reg68;
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static bool saved_status = FALSE;
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char buf_flag7_default[8] = { 7, 00, 00, 00, 0x0, 0x00, 0x00, 0x00};
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/* Figure out powermode 1 or o command */
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strncpy((char *)&powermode_val, command + strlen("BTCOEXMODE") +1, 1);
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if (strnicmp((char *)&powermode_val, "1", strlen("1")) == 0) {
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WL_TRACE_HW4(("DHCP session starts\n"));
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#ifdef PKT_FILTER_SUPPORT
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dhd->dhcp_in_progress = 1;
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if (dhd->early_suspended) {
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WL_TRACE_HW4(("DHCP in progressing , disable packet filter!!!\n"));
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dhd_enable_packet_filter(0, dhd);
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}
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#endif
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/* Retrieve and saved orig regs value */
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if ((saved_status == FALSE) &&
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(!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 */
|
|
/* 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(("enable BT DHCP Timer\n"));
|
|
}
|
|
}
|
|
else if (saved_status == TRUE) {
|
|
WL_ERR(("was called w/o DHCP OFF. Continue\n"));
|
|
}
|
|
}
|
|
else if (strnicmp((char *)&powermode_val, "2", strlen("2")) == 0) {
|
|
|
|
|
|
|
|
#ifdef PKT_FILTER_SUPPORT
|
|
dhd->dhcp_in_progress = 0;
|
|
WL_TRACE_HW4(("DHCP is complete \n"));
|
|
|
|
/* Enable packet filtering */
|
|
if (dhd->early_suspended) {
|
|
WL_TRACE_HW4(("DHCP is complete , enable packet filter!!!\n"));
|
|
dhd_enable_packet_filter(1, dhd);
|
|
}
|
|
#endif /* PKT_FILTER_SUPPORT */
|
|
|
|
/* Restoring PM mode */
|
|
|
|
/* Stop any bt timer because DHCP session is done */
|
|
WL_TRACE(("disable BT DHCP Timer\n"));
|
|
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(("bt->bt_state:%d\n", 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));
|
|
|
|
/* 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(("Unkwown yet power setting, ignored\n"));
|
|
}
|
|
|
|
snprintf(command, 3, "OK");
|
|
|
|
return (strlen("OK"));
|
|
}
|