kernel-fxtec-pro1x/drivers/net/wireless/rtlwifi/ps.c

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/******************************************************************************
*
* Copyright(c) 2009-2012 Realtek Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* wlanfae <wlanfae@realtek.com>
* Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
* Hsinchu 300, Taiwan.
*
* Larry Finger <Larry.Finger@lwfinger.net>
*
*****************************************************************************/
#include <linux/export.h>
#include "wifi.h"
#include "base.h"
#include "ps.h"
bool rtl_ps_enable_nic(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
/*<1> reset trx ring */
if (rtlhal->interface == INTF_PCI)
rtlpriv->intf_ops->reset_trx_ring(hw);
if (is_hal_stop(rtlhal))
RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
"Driver is already down!\n");
/*<2> Enable Adapter */
if (rtlpriv->cfg->ops->hw_init(hw))
return 1;
RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);
/*<3> Enable Interrupt */
rtlpriv->cfg->ops->enable_interrupt(hw);
/*<enable timer> */
rtl_watch_dog_timer_callback((unsigned long)hw);
return true;
}
EXPORT_SYMBOL(rtl_ps_enable_nic);
bool rtl_ps_disable_nic(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
/*<1> Stop all timer */
rtl_deinit_deferred_work(hw);
/*<2> Disable Interrupt */
rtlpriv->cfg->ops->disable_interrupt(hw);
tasklet_kill(&rtlpriv->works.irq_tasklet);
/*<3> Disable Adapter */
rtlpriv->cfg->ops->hw_disable(hw);
return true;
}
EXPORT_SYMBOL(rtl_ps_disable_nic);
bool rtl_ps_set_rf_state(struct ieee80211_hw *hw,
enum rf_pwrstate state_toset,
u32 changesource)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
bool actionallowed = false;
switch (state_toset) {
case ERFON:
ppsc->rfoff_reason &= (~changesource);
if ((changesource == RF_CHANGE_BY_HW) &&
(ppsc->hwradiooff)) {
ppsc->hwradiooff = false;
}
if (!ppsc->rfoff_reason) {
ppsc->rfoff_reason = 0;
actionallowed = true;
}
break;
case ERFOFF:
if ((changesource == RF_CHANGE_BY_HW)
&& (ppsc->hwradiooff == false)) {
ppsc->hwradiooff = true;
}
ppsc->rfoff_reason |= changesource;
actionallowed = true;
break;
case ERFSLEEP:
ppsc->rfoff_reason |= changesource;
actionallowed = true;
break;
default:
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"switch case not processed\n");
break;
}
if (actionallowed)
rtlpriv->cfg->ops->set_rf_power_state(hw, state_toset);
return actionallowed;
}
EXPORT_SYMBOL(rtl_ps_set_rf_state);
static void _rtl_ps_inactive_ps(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
ppsc->swrf_processing = true;
if (ppsc->inactive_pwrstate == ERFON &&
rtlhal->interface == INTF_PCI) {
if ((ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) &&
RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) &&
rtlhal->interface == INTF_PCI) {
rtlpriv->intf_ops->disable_aspm(hw);
RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
}
}
rtl_ps_set_rf_state(hw, ppsc->inactive_pwrstate, RF_CHANGE_BY_IPS);
if (ppsc->inactive_pwrstate == ERFOFF &&
rtlhal->interface == INTF_PCI) {
if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM &&
!RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
rtlpriv->intf_ops->enable_aspm(hw);
RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
}
}
ppsc->swrf_processing = false;
}
void rtl_ips_nic_off_wq_callback(void *data)
{
struct rtl_works *rtlworks =
container_of_dwork_rtl(data, struct rtl_works, ips_nic_off_wq);
struct ieee80211_hw *hw = rtlworks->hw;
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
enum rf_pwrstate rtstate;
if (mac->opmode != NL80211_IFTYPE_STATION) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
"not station return\n");
return;
}
if (mac->link_state > MAC80211_NOLINK)
return;
if (is_hal_stop(rtlhal))
return;
if (rtlpriv->sec.being_setkey)
return;
if (ppsc->inactiveps) {
rtstate = ppsc->rfpwr_state;
/*
*Do not enter IPS in the following conditions:
*(1) RF is already OFF or Sleep
*(2) swrf_processing (indicates the IPS is still under going)
*(3) Connectted (only disconnected can trigger IPS)
*(4) IBSS (send Beacon)
*(5) AP mode (send Beacon)
*(6) monitor mode (rcv packet)
*/
if (rtstate == ERFON &&
!ppsc->swrf_processing &&
(mac->link_state == MAC80211_NOLINK) &&
!mac->act_scanning) {
RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
"IPSEnter(): Turn off RF\n");
ppsc->inactive_pwrstate = ERFOFF;
ppsc->in_powersavemode = true;
/*rtl_pci_reset_trx_ring(hw); */
_rtl_ps_inactive_ps(hw);
}
}
}
void rtl_ips_nic_off(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
/*
*because when link with ap, mac80211 will ask us
*to disable nic quickly after scan before linking,
*this will cause link failed, so we delay 100ms here
*/
queue_delayed_work(rtlpriv->works.rtl_wq,
&rtlpriv->works.ips_nic_off_wq, MSECS(100));
}
void rtl_ips_nic_on(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
enum rf_pwrstate rtstate;
rtlwifi: Fix locking problem introduces with commit 6539306b When I tested commit 6539306, I did not notice that loading an out-of-tree module turns off lockdep testing in kernel 3.2. For that reason, I missed the kernel WARNING shown below: The solution fixes the warning by partially reverting commit 6539306. [ 84.168146] ------------[ cut here ]------------ [ 84.168155] WARNING: at kernel/mutex.c:198 mutex_lock_nested+0x309/0x310() [ 84.168158] Hardware name: HP Pavilion dv2700 Notebook PC [ 84.168161] Modules linked in: nfs lockd auth_rpcgss nfs_acl sunrpc af_packet cpufreq_conservative cpufreq_userspace cpufreq_powersave powernow_k8 mperf e xt3 jbd ide_cd_mod cdrom snd_hda_codec_conexant arc4 rtl8192ce ide_pci_generic rtl8192c_common rtlwifi snd_hda_intel mac80211 snd_hda_codec snd_pcm snd_timer amd74xx ide_core cfg80211 k8temp snd joydev soundcore hwmon battery forcedeth i2c_nforce2 sg rfkill ac serio_raw snd_page_alloc button video i2c_core ipv6 a utofs4 ext4 mbcache jbd2 crc16 sd_mod ahci ohci_hcd libahci libata scsi_mod ehci_hcd usbcore usb_common fan processor thermal [ 84.168231] Pid: 1218, comm: kworker/u:2 Not tainted 3.2.0-rc5-wl+ #155 [ 84.168234] Call Trace: [ 84.168240] [<ffffffff81048aaa>] warn_slowpath_common+0x7a/0xb0 [ 84.168245] [<ffffffff81048af5>] warn_slowpath_null+0x15/0x20 [ 84.168249] [<ffffffff813811f9>] mutex_lock_nested+0x309/0x310 [ 84.168269] [<ffffffffa00793f9>] ? rtl_ips_nic_on+0x49/0xb0 [rtlwifi] [ 84.168277] [<ffffffffa00793f9>] rtl_ips_nic_on+0x49/0xb0 [rtlwifi] [ 84.168284] [<ffffffffa007ab85>] rtl_pci_tx+0x1b5/0x560 [rtlwifi] [ 84.168291] [<ffffffffa007635a>] rtl_op_tx+0x9a/0xa0 [rtlwifi] [ 84.168359] [<ffffffffa043cf51>] __ieee80211_tx+0x181/0x2b0 [mac80211] [ 84.168375] [<ffffffffa043ef06>] ieee80211_tx+0xf6/0x120 [mac80211] [ 84.168391] [<ffffffffa043ee49>] ? ieee80211_tx+0x39/0x120 [mac80211] [ 84.168408] [<ffffffffa043f80b>] ieee80211_xmit+0xdb/0x100 [mac80211] [ 84.168425] [<ffffffffa043f730>] ? ieee80211_skb_resize.isra.26+0xb0/0xb0 [mac80211] [ 84.168441] [<ffffffffa0440b2a>] ieee80211_tx_skb_tid+0x5a/0x70 [mac80211] [ 84.168458] [<ffffffffa0443da2>] ieee80211_send_auth+0x152/0x1b0 [mac80211] [ 84.168474] [<ffffffffa042e169>] ieee80211_work_work+0x1049/0x1860 [mac80211] [ 84.168489] [<ffffffffa042d120>] ? free_work+0x20/0x20 [mac80211] [ 84.168504] [<ffffffffa042d120>] ? free_work+0x20/0x20 [mac80211] [ 84.168510] [<ffffffff81065ffc>] process_one_work+0x17c/0x530 [ 84.168514] [<ffffffff81065f92>] ? process_one_work+0x112/0x530 [ 84.168519] [<ffffffff81066994>] worker_thread+0x164/0x350 [ 84.168524] [<ffffffff8108420d>] ? trace_hardirqs_on+0xd/0x10 [ 84.168528] [<ffffffff81066830>] ? manage_workers.isra.28+0x220/0x220 [ 84.168533] [<ffffffff8106bc17>] kthread+0x87/0x90 [ 84.168539] [<ffffffff813854b4>] kernel_thread_helper+0x4/0x10 [ 84.168543] [<ffffffff81382bdd>] ? retint_restore_args+0xe/0xe [ 84.168547] [<ffffffff8106bb90>] ? __init_kthread_worker+0x70/0x70 [ 84.168552] [<ffffffff813854b0>] ? gs_change+0xb/0xb [ 84.168554] ---[ end trace f25a4fdc768c028f ]--- Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stanislaw Gruska <sgruszka@redhat.com> Cc: Chaoming Li <chaoming_li@realsil.com.cn> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-16 20:17:16 -07:00
unsigned long flags;
if (mac->opmode != NL80211_IFTYPE_STATION)
return;
rtlwifi: Fix locking problem introduces with commit 6539306b When I tested commit 6539306, I did not notice that loading an out-of-tree module turns off lockdep testing in kernel 3.2. For that reason, I missed the kernel WARNING shown below: The solution fixes the warning by partially reverting commit 6539306. [ 84.168146] ------------[ cut here ]------------ [ 84.168155] WARNING: at kernel/mutex.c:198 mutex_lock_nested+0x309/0x310() [ 84.168158] Hardware name: HP Pavilion dv2700 Notebook PC [ 84.168161] Modules linked in: nfs lockd auth_rpcgss nfs_acl sunrpc af_packet cpufreq_conservative cpufreq_userspace cpufreq_powersave powernow_k8 mperf e xt3 jbd ide_cd_mod cdrom snd_hda_codec_conexant arc4 rtl8192ce ide_pci_generic rtl8192c_common rtlwifi snd_hda_intel mac80211 snd_hda_codec snd_pcm snd_timer amd74xx ide_core cfg80211 k8temp snd joydev soundcore hwmon battery forcedeth i2c_nforce2 sg rfkill ac serio_raw snd_page_alloc button video i2c_core ipv6 a utofs4 ext4 mbcache jbd2 crc16 sd_mod ahci ohci_hcd libahci libata scsi_mod ehci_hcd usbcore usb_common fan processor thermal [ 84.168231] Pid: 1218, comm: kworker/u:2 Not tainted 3.2.0-rc5-wl+ #155 [ 84.168234] Call Trace: [ 84.168240] [<ffffffff81048aaa>] warn_slowpath_common+0x7a/0xb0 [ 84.168245] [<ffffffff81048af5>] warn_slowpath_null+0x15/0x20 [ 84.168249] [<ffffffff813811f9>] mutex_lock_nested+0x309/0x310 [ 84.168269] [<ffffffffa00793f9>] ? rtl_ips_nic_on+0x49/0xb0 [rtlwifi] [ 84.168277] [<ffffffffa00793f9>] rtl_ips_nic_on+0x49/0xb0 [rtlwifi] [ 84.168284] [<ffffffffa007ab85>] rtl_pci_tx+0x1b5/0x560 [rtlwifi] [ 84.168291] [<ffffffffa007635a>] rtl_op_tx+0x9a/0xa0 [rtlwifi] [ 84.168359] [<ffffffffa043cf51>] __ieee80211_tx+0x181/0x2b0 [mac80211] [ 84.168375] [<ffffffffa043ef06>] ieee80211_tx+0xf6/0x120 [mac80211] [ 84.168391] [<ffffffffa043ee49>] ? ieee80211_tx+0x39/0x120 [mac80211] [ 84.168408] [<ffffffffa043f80b>] ieee80211_xmit+0xdb/0x100 [mac80211] [ 84.168425] [<ffffffffa043f730>] ? ieee80211_skb_resize.isra.26+0xb0/0xb0 [mac80211] [ 84.168441] [<ffffffffa0440b2a>] ieee80211_tx_skb_tid+0x5a/0x70 [mac80211] [ 84.168458] [<ffffffffa0443da2>] ieee80211_send_auth+0x152/0x1b0 [mac80211] [ 84.168474] [<ffffffffa042e169>] ieee80211_work_work+0x1049/0x1860 [mac80211] [ 84.168489] [<ffffffffa042d120>] ? free_work+0x20/0x20 [mac80211] [ 84.168504] [<ffffffffa042d120>] ? free_work+0x20/0x20 [mac80211] [ 84.168510] [<ffffffff81065ffc>] process_one_work+0x17c/0x530 [ 84.168514] [<ffffffff81065f92>] ? process_one_work+0x112/0x530 [ 84.168519] [<ffffffff81066994>] worker_thread+0x164/0x350 [ 84.168524] [<ffffffff8108420d>] ? trace_hardirqs_on+0xd/0x10 [ 84.168528] [<ffffffff81066830>] ? manage_workers.isra.28+0x220/0x220 [ 84.168533] [<ffffffff8106bc17>] kthread+0x87/0x90 [ 84.168539] [<ffffffff813854b4>] kernel_thread_helper+0x4/0x10 [ 84.168543] [<ffffffff81382bdd>] ? retint_restore_args+0xe/0xe [ 84.168547] [<ffffffff8106bb90>] ? __init_kthread_worker+0x70/0x70 [ 84.168552] [<ffffffff813854b0>] ? gs_change+0xb/0xb [ 84.168554] ---[ end trace f25a4fdc768c028f ]--- Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stanislaw Gruska <sgruszka@redhat.com> Cc: Chaoming Li <chaoming_li@realsil.com.cn> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-16 20:17:16 -07:00
spin_lock_irqsave(&rtlpriv->locks.ips_lock, flags);
if (ppsc->inactiveps) {
rtstate = ppsc->rfpwr_state;
if (rtstate != ERFON &&
!ppsc->swrf_processing &&
ppsc->rfoff_reason <= RF_CHANGE_BY_IPS) {
ppsc->inactive_pwrstate = ERFON;
ppsc->in_powersavemode = false;
_rtl_ps_inactive_ps(hw);
}
}
rtlwifi: Fix locking problem introduces with commit 6539306b When I tested commit 6539306, I did not notice that loading an out-of-tree module turns off lockdep testing in kernel 3.2. For that reason, I missed the kernel WARNING shown below: The solution fixes the warning by partially reverting commit 6539306. [ 84.168146] ------------[ cut here ]------------ [ 84.168155] WARNING: at kernel/mutex.c:198 mutex_lock_nested+0x309/0x310() [ 84.168158] Hardware name: HP Pavilion dv2700 Notebook PC [ 84.168161] Modules linked in: nfs lockd auth_rpcgss nfs_acl sunrpc af_packet cpufreq_conservative cpufreq_userspace cpufreq_powersave powernow_k8 mperf e xt3 jbd ide_cd_mod cdrom snd_hda_codec_conexant arc4 rtl8192ce ide_pci_generic rtl8192c_common rtlwifi snd_hda_intel mac80211 snd_hda_codec snd_pcm snd_timer amd74xx ide_core cfg80211 k8temp snd joydev soundcore hwmon battery forcedeth i2c_nforce2 sg rfkill ac serio_raw snd_page_alloc button video i2c_core ipv6 a utofs4 ext4 mbcache jbd2 crc16 sd_mod ahci ohci_hcd libahci libata scsi_mod ehci_hcd usbcore usb_common fan processor thermal [ 84.168231] Pid: 1218, comm: kworker/u:2 Not tainted 3.2.0-rc5-wl+ #155 [ 84.168234] Call Trace: [ 84.168240] [<ffffffff81048aaa>] warn_slowpath_common+0x7a/0xb0 [ 84.168245] [<ffffffff81048af5>] warn_slowpath_null+0x15/0x20 [ 84.168249] [<ffffffff813811f9>] mutex_lock_nested+0x309/0x310 [ 84.168269] [<ffffffffa00793f9>] ? rtl_ips_nic_on+0x49/0xb0 [rtlwifi] [ 84.168277] [<ffffffffa00793f9>] rtl_ips_nic_on+0x49/0xb0 [rtlwifi] [ 84.168284] [<ffffffffa007ab85>] rtl_pci_tx+0x1b5/0x560 [rtlwifi] [ 84.168291] [<ffffffffa007635a>] rtl_op_tx+0x9a/0xa0 [rtlwifi] [ 84.168359] [<ffffffffa043cf51>] __ieee80211_tx+0x181/0x2b0 [mac80211] [ 84.168375] [<ffffffffa043ef06>] ieee80211_tx+0xf6/0x120 [mac80211] [ 84.168391] [<ffffffffa043ee49>] ? ieee80211_tx+0x39/0x120 [mac80211] [ 84.168408] [<ffffffffa043f80b>] ieee80211_xmit+0xdb/0x100 [mac80211] [ 84.168425] [<ffffffffa043f730>] ? ieee80211_skb_resize.isra.26+0xb0/0xb0 [mac80211] [ 84.168441] [<ffffffffa0440b2a>] ieee80211_tx_skb_tid+0x5a/0x70 [mac80211] [ 84.168458] [<ffffffffa0443da2>] ieee80211_send_auth+0x152/0x1b0 [mac80211] [ 84.168474] [<ffffffffa042e169>] ieee80211_work_work+0x1049/0x1860 [mac80211] [ 84.168489] [<ffffffffa042d120>] ? free_work+0x20/0x20 [mac80211] [ 84.168504] [<ffffffffa042d120>] ? free_work+0x20/0x20 [mac80211] [ 84.168510] [<ffffffff81065ffc>] process_one_work+0x17c/0x530 [ 84.168514] [<ffffffff81065f92>] ? process_one_work+0x112/0x530 [ 84.168519] [<ffffffff81066994>] worker_thread+0x164/0x350 [ 84.168524] [<ffffffff8108420d>] ? trace_hardirqs_on+0xd/0x10 [ 84.168528] [<ffffffff81066830>] ? manage_workers.isra.28+0x220/0x220 [ 84.168533] [<ffffffff8106bc17>] kthread+0x87/0x90 [ 84.168539] [<ffffffff813854b4>] kernel_thread_helper+0x4/0x10 [ 84.168543] [<ffffffff81382bdd>] ? retint_restore_args+0xe/0xe [ 84.168547] [<ffffffff8106bb90>] ? __init_kthread_worker+0x70/0x70 [ 84.168552] [<ffffffff813854b0>] ? gs_change+0xb/0xb [ 84.168554] ---[ end trace f25a4fdc768c028f ]--- Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stanislaw Gruska <sgruszka@redhat.com> Cc: Chaoming Li <chaoming_li@realsil.com.cn> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-16 20:17:16 -07:00
spin_unlock_irqrestore(&rtlpriv->locks.ips_lock, flags);
}
/*for FW LPS*/
/*
*Determine if we can set Fw into PS mode
*in current condition.Return TRUE if it
*can enter PS mode.
*/
static bool rtl_get_fwlps_doze(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
u32 ps_timediff;
ps_timediff = jiffies_to_msecs(jiffies -
ppsc->last_delaylps_stamp_jiffies);
if (ps_timediff < 2000) {
RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
"Delay enter Fw LPS for DHCP, ARP, or EAPOL exchanging state\n");
return false;
}
if (mac->link_state != MAC80211_LINKED)
return false;
if (mac->opmode == NL80211_IFTYPE_ADHOC)
return false;
return true;
}
/* Change current and default preamble mode.*/
static void rtl_lps_set_psmode(struct ieee80211_hw *hw, u8 rt_psmode)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
u8 rpwm_val, fw_pwrmode;
if (mac->opmode == NL80211_IFTYPE_ADHOC)
return;
if (mac->link_state != MAC80211_LINKED)
return;
if (ppsc->dot11_psmode == rt_psmode)
return;
/* Update power save mode configured. */
ppsc->dot11_psmode = rt_psmode;
/*
*<FW control LPS>
*1. Enter PS mode
* Set RPWM to Fw to turn RF off and send H2C fw_pwrmode
* cmd to set Fw into PS mode.
*2. Leave PS mode
* Send H2C fw_pwrmode cmd to Fw to set Fw into Active
* mode and set RPWM to turn RF on.
*/
if ((ppsc->fwctrl_lps) && ppsc->report_linked) {
bool fw_current_inps;
if (ppsc->dot11_psmode == EACTIVE) {
RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
"FW LPS leave ps_mode:%x\n",
FW_PS_ACTIVE_MODE);
rpwm_val = 0x0C; /* RF on */
fw_pwrmode = FW_PS_ACTIVE_MODE;
rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SET_RPWM,
(u8 *) (&rpwm_val));
rtlpriv->cfg->ops->set_hw_reg(hw,
HW_VAR_H2C_FW_PWRMODE,
(u8 *) (&fw_pwrmode));
fw_current_inps = false;
rtlpriv->cfg->ops->set_hw_reg(hw,
HW_VAR_FW_PSMODE_STATUS,
(u8 *) (&fw_current_inps));
} else {
if (rtl_get_fwlps_doze(hw)) {
RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
"FW LPS enter ps_mode:%x\n",
ppsc->fwctrl_psmode);
rpwm_val = 0x02; /* RF off */
fw_current_inps = true;
rtlpriv->cfg->ops->set_hw_reg(hw,
HW_VAR_FW_PSMODE_STATUS,
(u8 *) (&fw_current_inps));
rtlpriv->cfg->ops->set_hw_reg(hw,
HW_VAR_H2C_FW_PWRMODE,
(u8 *) (&ppsc->fwctrl_psmode));
rtlpriv->cfg->ops->set_hw_reg(hw,
HW_VAR_SET_RPWM,
(u8 *) (&rpwm_val));
} else {
/* Reset the power save related parameters. */
ppsc->dot11_psmode = EACTIVE;
}
}
}
}
/*Enter the leisure power save mode.*/
void rtl_lps_enter(struct ieee80211_hw *hw)
{
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
struct rtl_priv *rtlpriv = rtl_priv(hw);
if (!ppsc->fwctrl_lps)
return;
if (rtlpriv->sec.being_setkey)
return;
if (rtlpriv->link_info.busytraffic)
return;
/*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */
if (mac->cnt_after_linked < 5)
return;
if (mac->opmode == NL80211_IFTYPE_ADHOC)
return;
if (mac->link_state != MAC80211_LINKED)
return;
mutex_lock(&rtlpriv->locks.ps_mutex);
/* Idle for a while if we connect to AP a while ago. */
if (mac->cnt_after_linked >= 2) {
if (ppsc->dot11_psmode == EACTIVE) {
RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
"Enter 802.11 power save mode...\n");
rtl_lps_set_psmode(hw, EAUTOPS);
}
}
mutex_unlock(&rtlpriv->locks.ps_mutex);
}
/*Leave the leisure power save mode.*/
void rtl_lps_leave(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
mutex_lock(&rtlpriv->locks.ps_mutex);
if (ppsc->fwctrl_lps) {
if (ppsc->dot11_psmode != EACTIVE) {
/*FIX ME */
rtlpriv->cfg->ops->enable_interrupt(hw);
if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM &&
RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) &&
rtlhal->interface == INTF_PCI) {
rtlpriv->intf_ops->disable_aspm(hw);
RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
}
RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
"Busy Traffic,Leave 802.11 power save..\n");
rtl_lps_set_psmode(hw, EACTIVE);
}
}
mutex_unlock(&rtlpriv->locks.ps_mutex);
}
/* For sw LPS*/
void rtl_swlps_beacon(struct ieee80211_hw *hw, void *data, unsigned int len)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct ieee80211_hdr *hdr = (void *) data;
struct ieee80211_tim_ie *tim_ie;
u8 *tim;
u8 tim_len;
bool u_buffed;
bool m_buffed;
if (mac->opmode != NL80211_IFTYPE_STATION)
return;
if (!rtlpriv->psc.swctrl_lps)
return;
if (rtlpriv->mac80211.link_state != MAC80211_LINKED)
return;
if (!rtlpriv->psc.sw_ps_enabled)
return;
if (rtlpriv->psc.fwctrl_lps)
return;
if (likely(!(hw->conf.flags & IEEE80211_CONF_PS)))
return;
/* check if this really is a beacon */
if (!ieee80211_is_beacon(hdr->frame_control))
return;
/* min. beacon length + FCS_LEN */
if (len <= 40 + FCS_LEN)
return;
/* and only beacons from the associated BSSID, please */
if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid))
return;
rtlpriv->psc.last_beacon = jiffies;
tim = rtl_find_ie(data, len - FCS_LEN, WLAN_EID_TIM);
if (!tim)
return;
if (tim[1] < sizeof(*tim_ie))
return;
tim_len = tim[1];
tim_ie = (struct ieee80211_tim_ie *) &tim[2];
if (!WARN_ON_ONCE(!hw->conf.ps_dtim_period))
rtlpriv->psc.dtim_counter = tim_ie->dtim_count;
/* Check whenever the PHY can be turned off again. */
/* 1. What about buffered unicast traffic for our AID? */
u_buffed = ieee80211_check_tim(tim_ie, tim_len,
rtlpriv->mac80211.assoc_id);
/* 2. Maybe the AP wants to send multicast/broadcast data? */
m_buffed = tim_ie->bitmap_ctrl & 0x01;
rtlpriv->psc.multi_buffered = m_buffed;
/* unicast will process by mac80211 through
* set ~IEEE80211_CONF_PS, So we just check
* multicast frames here */
if (!m_buffed) {
/* back to low-power land. and delay is
* prevent null power save frame tx fail */
queue_delayed_work(rtlpriv->works.rtl_wq,
&rtlpriv->works.ps_work, MSECS(5));
} else {
RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG,
"u_bufferd: %x, m_buffered: %x\n", u_buffed, m_buffed);
}
}
void rtl_swlps_rf_awake(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
if (!rtlpriv->psc.swctrl_lps)
return;
if (mac->link_state != MAC80211_LINKED)
return;
if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM &&
RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
rtlpriv->intf_ops->disable_aspm(hw);
RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
}
mutex_lock(&rtlpriv->locks.ps_mutex);
rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS);
mutex_unlock(&rtlpriv->locks.ps_mutex);
}
void rtl_swlps_rfon_wq_callback(void *data)
{
struct rtl_works *rtlworks =
container_of_dwork_rtl(data, struct rtl_works, ps_rfon_wq);
struct ieee80211_hw *hw = rtlworks->hw;
rtl_swlps_rf_awake(hw);
}
void rtl_swlps_rf_sleep(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
u8 sleep_intv;
if (!rtlpriv->psc.sw_ps_enabled)
return;
if ((rtlpriv->sec.being_setkey) ||
(mac->opmode == NL80211_IFTYPE_ADHOC))
return;
/*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */
if ((mac->link_state != MAC80211_LINKED) || (mac->cnt_after_linked < 5))
return;
if (rtlpriv->link_info.busytraffic)
return;
mutex_lock(&rtlpriv->locks.ps_mutex);
rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS);
mutex_unlock(&rtlpriv->locks.ps_mutex);
if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM &&
!RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
rtlpriv->intf_ops->enable_aspm(hw);
RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
}
/* here is power save alg, when this beacon is DTIM
* we will set sleep time to dtim_period * n;
* when this beacon is not DTIM, we will set sleep
* time to sleep_intv = rtlpriv->psc.dtim_counter or
* MAX_SW_LPS_SLEEP_INTV(default set to 5) */
if (rtlpriv->psc.dtim_counter == 0) {
if (hw->conf.ps_dtim_period == 1)
sleep_intv = hw->conf.ps_dtim_period * 2;
else
sleep_intv = hw->conf.ps_dtim_period;
} else {
sleep_intv = rtlpriv->psc.dtim_counter;
}
if (sleep_intv > MAX_SW_LPS_SLEEP_INTV)
sleep_intv = MAX_SW_LPS_SLEEP_INTV;
/* this print should always be dtim_conter = 0 &
* sleep = dtim_period, that meaons, we should
* awake before every dtim */
RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG,
"dtim_counter:%x will sleep :%d beacon_intv\n",
rtlpriv->psc.dtim_counter, sleep_intv);
/* we tested that 40ms is enough for sw & hw sw delay */
queue_delayed_work(rtlpriv->works.rtl_wq, &rtlpriv->works.ps_rfon_wq,
MSECS(sleep_intv * mac->vif->bss_conf.beacon_int - 40));
}
void rtl_swlps_wq_callback(void *data)
{
struct rtl_works *rtlworks = container_of_dwork_rtl(data,
struct rtl_works,
ps_work);
struct ieee80211_hw *hw = rtlworks->hw;
struct rtl_priv *rtlpriv = rtl_priv(hw);
bool ps = false;
ps = (hw->conf.flags & IEEE80211_CONF_PS);
/* we can sleep after ps null send ok */
if (rtlpriv->psc.state_inap) {
rtl_swlps_rf_sleep(hw);
if (rtlpriv->psc.state && !ps) {
rtlpriv->psc.sleep_ms = jiffies_to_msecs(jiffies -
rtlpriv->psc.last_action);
}
if (ps)
rtlpriv->psc.last_slept = jiffies;
rtlpriv->psc.last_action = jiffies;
rtlpriv->psc.state = ps;
}
}