+++ /dev/null
-/*
- * Linux cfg80211 driver - Dongle Host Driver (DHD) related
- *
- * Copyright (C) 1999-2019, Broadcom.
- *
- * 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: wl_cfg_btcoex.c 814554 2019-04-11 23:06:22Z $
- */
-
-#include <net/rtnetlink.h>
-
-#include <bcmutils.h>
-#include <wldev_common.h>
-#include <wl_cfg80211.h>
-#include <dhd_cfg80211.h>
-#include <dngl_stats.h>
-#include <dhd.h>
-#include <dhdioctl.h>
-#include <wlioctl.h>
-
-#ifdef PKT_FILTER_SUPPORT
-extern uint dhd_pkt_filter_enable;
-extern uint dhd_master_mode;
-extern void dhd_pktfilter_offload_enable(dhd_pub_t * dhd, char *arg, int enable, int master_mode);
-#endif // endif
-
-struct btcoex_info {
- timer_list_compat_t timer;
- u32 timer_ms;
- u32 timer_on;
- u32 ts_dhcp_start; /* ms ts ecord time stats */
- u32 ts_dhcp_ok; /* ms ts ecord time stats */
- bool dhcp_done; /* flag, indicates that host done with
- * dhcp before t1/t2 expiration
- */
- s32 bt_state;
- struct work_struct work;
- struct net_device *dev;
-};
-
-static struct btcoex_info *btcoex_info_loc = NULL;
-
-/* TODO: clean up the BT-Coex code, it still have some legacy ioctl/iovar functions */
-
-/* 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
-
-#define BTCOEXMODE "BTCOEXMODE"
-#define POWERMODE "POWERMODE"
-
-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;
-
- bzero(&var, sizeof(var));
- error = bcm_mkiovar(name, (char *)(®), sizeof(reg), (char *)(&var), sizeof(var.buf));
- if (error == 0) {
- return BCME_BUFTOOSHORT;
- }
- error = wldev_ioctl_get(dev, WLC_GET_VAR, (char *)(&var), sizeof(var.buf));
-
- *retval = dtoh32(var.val);
- return (error);
-}
-
-static int
-dev_wlc_bufvar_set(struct net_device *dev, char *name, char *buf, int len)
-{
- char ioctlbuf_local[WLC_IOCTL_SMLEN];
- int ret;
-
- ret = bcm_mkiovar(name, buf, len, ioctlbuf_local, sizeof(ioctlbuf_local));
- if (ret == 0)
- return BCME_BUFTOOSHORT;
- return (wldev_ioctl_set(dev, WLC_SET_VAR, ioctlbuf_local, ret));
-}
-
-/*
-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];
-
- bzero(reg_addr, 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(("sample[%d], btc params: 27:%x\n", i, param27));
-
- if (ioc_res < 0) {
- WL_ERR(("ioc read btc params error\n"));
- break;
- }
-
- if ((param27 & 0x6) == 2) { /* count both sco & esco */
- sco_id_cnt++;
- }
-
- if (sco_id_cnt > 2) {
- WL_TRACE(("sco/esco detected, pkt id_cnt:%d samples:%d\n",
- sco_id_cnt, i));
- res = TRUE;
- break;
- }
-
- OSL_SLEEP(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(("saved 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));
- } 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 // endif
-
-#if defined(BT_DHCP_eSCO_FIX)
- /* set = 1, save & turn on 0 - off & restore prev settings */
- set_btc_esco_params(dev, set);
-#endif // 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 // endif
-}
-
-static void wl_cfg80211_bt_timerfunc(ulong data)
-{
- struct btcoex_info *bt_local = (struct btcoex_info *)data;
- WL_TRACE(("Enter\n"));
- 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;
-
- GCC_DIAGNOSTIC_PUSH_SUPPRESS_CAST();
- btcx_inf = container_of(work, struct btcoex_info, work);
- GCC_DIAGNOSTIC_POP();
-
- 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(("bt_dhcp stm: started \n"));
-
- 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(("DHCP Done before T1 expiration\n"));
- goto btc_coex_idle;
- }
-
- /* DHCP is not over yet, start lowering BT priority
- * enforce btc_params + flags if necessary
- */
- WL_TRACE(("DHCP T1:%d expired\n", 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(("DHCP Done before T2 expiration\n"));
- } else {
- /* Noo dhcp during T1+T2, restore BT priority */
- WL_TRACE(("DHCP wait interval T2:%d msec expired\n",
- 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(("error g_status=%d !!!\n", 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);
-}
-
-void* wl_cfg80211_btcoex_init(struct net_device *ndev)
-{
- struct btcoex_info *btco_inf = NULL;
-
- btco_inf = kmalloc(sizeof(struct btcoex_info), GFP_KERNEL);
- if (!btco_inf)
- return NULL;
-
- 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_compat(&btco_inf->timer, wl_cfg80211_bt_timerfunc, btco_inf);
-
- btco_inf->dev = ndev;
-
- INIT_WORK(&btco_inf->work, wl_cfg80211_bt_handler);
-
- btcoex_info_loc = btco_inf;
- return btco_inf;
-}
-
-void wl_cfg80211_btcoex_deinit()
-{
- if (!btcoex_info_loc)
- return;
-
- if (btcoex_info_loc->timer_on) {
- btcoex_info_loc->timer_on = 0;
- del_timer_sync(&btcoex_info_loc->timer);
- }
-
- cancel_work_sync(&btcoex_info_loc->work);
-
- kfree(btcoex_info_loc);
-}
-
-int wl_cfg80211_set_btcoex_dhcp(struct net_device *dev, dhd_pub_t *dhd, char *command)
-{
-
- struct btcoex_info *btco_inf = btcoex_info_loc;
- char powermode_val = 0;
- uint8 cmd_len = 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;
-
- char buf_flag7_default[8] = { 7, 00, 00, 00, 0x0, 0x00, 0x00, 0x00};
-
- /* Figure out powermode 1 or o command */
- cmd_len = sizeof(BTCOEXMODE);
- powermode_val = command[cmd_len];
-
- if (powermode_val == '1') {
- WL_TRACE_HW4(("DHCP session starts\n"));
-
-#ifdef PKT_FILTER_SUPPORT
- dhd->dhcp_in_progress = 1;
-
-#if defined(APSTA_BLOCK_ARP_DURING_DHCP)
- if (DHD_OPMODE_STA_SOFTAP_CONCURR(dhd)) {
- /* Block ARP frames while DHCP of STA interface is in
- * progress in case of STA/SoftAP concurrent mode
- */
- wl_cfg80211_block_arp(dev, TRUE);
- } else
-#endif /* APSTA_BLOCK_ARP_DURING_DHCP */
- if (dhd->early_suspended) {
- WL_TRACE_HW4(("DHCP in progressing , disable packet filter!!!\n"));
- dhd_enable_packet_filter(0, dhd);
- }
-#endif /* PKT_FILTER_SUPPORT */
-
- /* 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 */
- /* 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,
- timer_expires(&btco_inf->timer));
- WL_TRACE(("enable BT DHCP Timer\n"));
- }
- }
- else if (saved_status == TRUE) {
- WL_ERR(("was called w/o DHCP OFF. Continue\n"));
- }
- }
- else if (powermode_val == '2') {
-
-#ifdef PKT_FILTER_SUPPORT
- dhd->dhcp_in_progress = 0;
- WL_TRACE_HW4(("DHCP is complete \n"));
-
-#if defined(APSTA_BLOCK_ARP_DURING_DHCP)
- if (DHD_OPMODE_STA_SOFTAP_CONCURR(dhd)) {
- /* Unblock ARP frames */
- wl_cfg80211_block_arp(dev, FALSE);
- } else
-#endif /* APSTA_BLOCK_ARP_DURING_DHCP */
- if (dhd->early_suspended) {
- /* Enable packet filtering */
- 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"));
- }
-
- return (snprintf(command, sizeof("OK"), "OK") + 1);
-}
projects / GitHub / LineageOS / G12 / android_hardware_amlogic_kernel-modules_dhd-driver.git / blobdiff