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![Larry Finger](/assets/img/avatar_default.png)
I am preparing to convert this driver from semaphore to mutex locking, The first step has been to eliminate a number of semaphores that were initialized but never used, and one whose only use was a single "up" after initialization. A total of 9 semaphores were removed in this process. One other change was to remove some inline semaphore routines that were unused. In addition, several cases had the following structure: down() if () { ... } up() The locking overhead was reduced by moving the up/down inside the if block. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
151 lines
4 KiB
C
151 lines
4 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* Modifications for inclusion into the Linux staging tree are
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* Copyright(c) 2010 Larry Finger. All rights reserved.
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*
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* Contact information:
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* WLAN FAE <wlanfae@realtek.com>
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* Larry Finger <Larry.Finger@lwfinger.net>
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*
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******************************************************************************/
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#ifndef __RTL871X_PWRCTRL_H_
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#define __RTL871X_PWRCTRL_H_
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#include "osdep_service.h"
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#include "drv_types.h"
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#define FW_PWR0 0
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#define FW_PWR1 1
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#define FW_PWR2 2
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#define FW_PWR3 3
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#define HW_PWR0 7
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#define HW_PWR1 6
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#define HW_PWR2 2
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#define HW_PWR3 0
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#define HW_PWR4 8
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#define FW_PWRMSK 0x7
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#define XMIT_ALIVE BIT(0)
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#define RECV_ALIVE BIT(1)
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#define CMD_ALIVE BIT(2)
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#define EVT_ALIVE BIT(3)
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enum Power_Mgnt {
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PS_MODE_ACTIVE = 0 ,
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PS_MODE_MIN ,
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PS_MODE_MAX ,
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PS_MODE_DTIM ,
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PS_MODE_VOIP ,
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PS_MODE_UAPSD_WMM ,
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PS_MODE_UAPSD ,
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PS_MODE_IBSS ,
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PS_MODE_WWLAN ,
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PM_Radio_Off ,
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PM_Card_Disable ,
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PS_MODE_NUM
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};
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/*
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BIT[2:0] = HW state
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BIT[3] = Protocol PS state, 0: register active state,
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1: register sleep state
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BIT[4] = sub-state
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*/
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#define PS_DPS BIT(0)
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#define PS_LCLK (PS_DPS)
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#define PS_RF_OFF BIT(1)
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#define PS_ALL_ON BIT(2)
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#define PS_ST_ACTIVE BIT(3)
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#define PS_LP BIT(4) /* low performance */
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#define PS_STATE_MASK (0x0F)
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#define PS_STATE_HW_MASK (0x07)
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#define PS_SEQ_MASK (0xc0)
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#define PS_STATE(x) (PS_STATE_MASK & (x))
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#define PS_STATE_HW(x) (PS_STATE_HW_MASK & (x))
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#define PS_SEQ(x) (PS_SEQ_MASK & (x))
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#define PS_STATE_S0 (PS_DPS)
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#define PS_STATE_S1 (PS_LCLK)
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#define PS_STATE_S2 (PS_RF_OFF)
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#define PS_STATE_S3 (PS_ALL_ON)
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#define PS_STATE_S4 ((PS_ST_ACTIVE) | (PS_ALL_ON))
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#define PS_IS_RF_ON(x) ((x) & (PS_ALL_ON))
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#define PS_IS_ACTIVE(x) ((x) & (PS_ST_ACTIVE))
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#define CLR_PS_STATE(x) ((x) = ((x) & (0xF0)))
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struct reportpwrstate_parm {
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unsigned char mode;
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unsigned char state; /* the CPWM value */
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unsigned short rsvd;
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};
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static inline void _enter_pwrlock(struct semaphore *plock)
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{
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_down_sema(plock);
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}
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struct pwrctrl_priv {
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struct semaphore lock;
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/*volatile*/ u8 rpwm; /* requested power state for fw */
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/* fw current power state. updated when 1. read from HCPWM or
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* 2. driver lowers power level */
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/*volatile*/ u8 cpwm;
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/*volatile*/ u8 tog; /* toggling */
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/*volatile*/ u8 cpwm_tog; /* toggling */
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/*volatile*/ u8 tgt_rpwm; /* wanted power state */
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uint pwr_mode;
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uint smart_ps;
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uint alives;
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uint ImrContent; /* used to store original imr. */
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uint bSleep; /* sleep -> active is different from active -> sleep. */
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_workitem SetPSModeWorkItem;
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_workitem rpwm_workitem;
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struct timer_list rpwm_check_timer;
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u8 rpwm_retry;
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uint bSetPSModeWorkItemInProgress;
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spinlock_t pnp_pwr_mgnt_lock;
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s32 pnp_current_pwr_state;
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u8 pnp_bstop_trx;
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u8 pnp_wwirp_pending;
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};
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void r8712_init_pwrctrl_priv(struct _adapter *adapter);
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sint r8712_register_cmd_alive(struct _adapter *padapter);
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void r8712_unregister_cmd_alive(struct _adapter *padapter);
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void r8712_cpwm_int_hdl(struct _adapter *padapter,
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struct reportpwrstate_parm *preportpwrstate);
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void r8712_set_ps_mode(struct _adapter *padapter, uint ps_mode,
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uint smart_ps);
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void r8712_set_rpwm(struct _adapter *padapter, u8 val8);
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#endif /* __RTL871X_PWRCTRL_H_ */
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