// SPDX-License-Identifier: GPL-2.0
|
/******************************************************************************
|
* rtl8712_cmd.c
|
*
|
* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
|
* Linux device driver for RTL8192SU
|
*
|
* Modifications for inclusion into the Linux staging tree are
|
* Copyright(c) 2010 Larry Finger. All rights reserved.
|
*
|
* Contact information:
|
* WLAN FAE <wlanfae@realtek.com>.
|
* Larry Finger <Larry.Finger@lwfinger.net>
|
*
|
******************************************************************************/
|
|
#define _RTL8712_CMD_C_
|
|
#include <linux/compiler.h>
|
#include <linux/kernel.h>
|
#include <linux/errno.h>
|
#include <linux/slab.h>
|
#include <linux/sched/signal.h>
|
#include <linux/module.h>
|
#include <linux/kref.h>
|
#include <linux/netdevice.h>
|
#include <linux/skbuff.h>
|
#include <linux/usb.h>
|
#include <linux/usb/ch9.h>
|
#include <linux/circ_buf.h>
|
#include <linux/uaccess.h>
|
#include <asm/byteorder.h>
|
#include <linux/atomic.h>
|
#include <linux/semaphore.h>
|
#include <linux/rtnetlink.h>
|
|
#include "osdep_service.h"
|
#include "drv_types.h"
|
#include "recv_osdep.h"
|
#include "mlme_osdep.h"
|
#include "rtl871x_ioctl_set.h"
|
|
static void check_hw_pbc(struct _adapter *padapter)
|
{
|
u8 tmp1byte;
|
|
r8712_write8(padapter, MAC_PINMUX_CTRL, (GPIOMUX_EN | GPIOSEL_GPIO));
|
tmp1byte = r8712_read8(padapter, GPIO_IO_SEL);
|
tmp1byte &= ~(HAL_8192S_HW_GPIO_WPS_BIT);
|
r8712_write8(padapter, GPIO_IO_SEL, tmp1byte);
|
tmp1byte = r8712_read8(padapter, GPIO_CTRL);
|
if (tmp1byte == 0xff)
|
return;
|
if (tmp1byte & HAL_8192S_HW_GPIO_WPS_BIT) {
|
/* Here we only set bPbcPressed to true
|
* After trigger PBC, the variable will be set to false
|
*/
|
DBG_8712("CheckPbcGPIO - PBC is pressed !!!!\n");
|
/* 0 is the default value and it means the application monitors
|
* the HW PBC doesn't provide its pid to driver.
|
*/
|
if (padapter->pid == 0)
|
return;
|
kill_pid(find_vpid(padapter->pid), SIGUSR1, 1);
|
}
|
}
|
|
/* query rx phy status from fw.
|
* Adhoc mode: beacon.
|
* Infrastructure mode: beacon , data.
|
*/
|
static void query_fw_rx_phy_status(struct _adapter *padapter)
|
{
|
u32 val32 = 0;
|
int pollingcnts = 50;
|
|
if (check_fwstate(&padapter->mlmepriv, _FW_LINKED)) {
|
r8712_write32(padapter, IOCMD_CTRL_REG, 0xf4000001);
|
msleep(100);
|
/* Wait FW complete IO Cmd */
|
while ((r8712_read32(padapter, IOCMD_CTRL_REG)) &&
|
(pollingcnts > 0)) {
|
pollingcnts--;
|
msleep(20);
|
}
|
if (pollingcnts != 0)
|
val32 = r8712_read32(padapter, IOCMD_DATA_REG);
|
else /* time out */
|
val32 = 0;
|
val32 >>= 4;
|
padapter->recvpriv.fw_rssi =
|
(u8)r8712_signal_scale_mapping(val32);
|
}
|
}
|
|
/* check mlme, hw, phy, or dynamic algorithm status. */
|
static void StatusWatchdogCallback(struct _adapter *padapter)
|
{
|
check_hw_pbc(padapter);
|
query_fw_rx_phy_status(padapter);
|
}
|
|
static void r871x_internal_cmd_hdl(struct _adapter *padapter, u8 *pbuf)
|
{
|
struct drvint_cmd_parm *pdrvcmd;
|
|
if (!pbuf)
|
return;
|
pdrvcmd = (struct drvint_cmd_parm *)pbuf;
|
switch (pdrvcmd->i_cid) {
|
case WDG_WK_CID:
|
StatusWatchdogCallback(padapter);
|
break;
|
default:
|
break;
|
}
|
kfree(pdrvcmd->pbuf);
|
}
|
|
static u8 read_bbreg_hdl(struct _adapter *padapter, u8 *pbuf)
|
{
|
struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
|
|
r8712_free_cmd_obj(pcmd);
|
return H2C_SUCCESS;
|
}
|
|
static u8 write_bbreg_hdl(struct _adapter *padapter, u8 *pbuf)
|
{
|
void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
|
struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
|
|
pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
|
if (!pcmd_callback)
|
r8712_free_cmd_obj(pcmd);
|
else
|
pcmd_callback(padapter, pcmd);
|
return H2C_SUCCESS;
|
}
|
|
static u8 read_rfreg_hdl(struct _adapter *padapter, u8 *pbuf)
|
{
|
u32 val;
|
void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
|
struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
|
|
if (pcmd->rsp && pcmd->rspsz > 0)
|
memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz);
|
pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
|
if (!pcmd_callback)
|
r8712_free_cmd_obj(pcmd);
|
else
|
pcmd_callback(padapter, pcmd);
|
return H2C_SUCCESS;
|
}
|
|
static u8 write_rfreg_hdl(struct _adapter *padapter, u8 *pbuf)
|
{
|
void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
|
struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
|
|
pcmd_callback = cmd_callback[pcmd->cmdcode].callback;
|
if (!pcmd_callback)
|
r8712_free_cmd_obj(pcmd);
|
else
|
pcmd_callback(padapter, pcmd);
|
return H2C_SUCCESS;
|
}
|
|
static u8 sys_suspend_hdl(struct _adapter *padapter, u8 *pbuf)
|
{
|
struct cmd_obj *pcmd = (struct cmd_obj *)pbuf;
|
|
r8712_free_cmd_obj(pcmd);
|
return H2C_SUCCESS;
|
}
|
|
static struct cmd_obj *cmd_hdl_filter(struct _adapter *padapter,
|
struct cmd_obj *pcmd)
|
{
|
struct cmd_obj *pcmd_r;
|
|
if (!pcmd)
|
return pcmd;
|
pcmd_r = NULL;
|
|
switch (pcmd->cmdcode) {
|
case GEN_CMD_CODE(_Read_BBREG):
|
read_bbreg_hdl(padapter, (u8 *)pcmd);
|
break;
|
case GEN_CMD_CODE(_Write_BBREG):
|
write_bbreg_hdl(padapter, (u8 *)pcmd);
|
break;
|
case GEN_CMD_CODE(_Read_RFREG):
|
read_rfreg_hdl(padapter, (u8 *)pcmd);
|
break;
|
case GEN_CMD_CODE(_Write_RFREG):
|
write_rfreg_hdl(padapter, (u8 *)pcmd);
|
break;
|
case GEN_CMD_CODE(_SetUsbSuspend):
|
sys_suspend_hdl(padapter, (u8 *)pcmd);
|
break;
|
case GEN_CMD_CODE(_JoinBss):
|
r8712_joinbss_reset(padapter);
|
/* Before set JoinBss_CMD to FW, driver must ensure FW is in
|
* PS_MODE_ACTIVE. Directly write rpwm to radio on and assign
|
* new pwr_mode to Driver, instead of use workitem to change
|
* state.
|
*/
|
if (padapter->pwrctrlpriv.pwr_mode > PS_MODE_ACTIVE) {
|
padapter->pwrctrlpriv.pwr_mode = PS_MODE_ACTIVE;
|
mutex_lock(&padapter->pwrctrlpriv.mutex_lock);
|
r8712_set_rpwm(padapter, PS_STATE_S4);
|
mutex_unlock(&padapter->pwrctrlpriv.mutex_lock);
|
}
|
pcmd_r = pcmd;
|
break;
|
case _DRV_INT_CMD_:
|
r871x_internal_cmd_hdl(padapter, pcmd->parmbuf);
|
r8712_free_cmd_obj(pcmd);
|
pcmd_r = NULL;
|
break;
|
default:
|
pcmd_r = pcmd;
|
break;
|
}
|
return pcmd_r; /* if returning pcmd_r == NULL, pcmd must be free. */
|
}
|
|
u8 r8712_fw_cmd(struct _adapter *pAdapter, u32 cmd)
|
{
|
int pollingcnts = 50;
|
|
r8712_write32(pAdapter, IOCMD_CTRL_REG, cmd);
|
msleep(100);
|
while ((r8712_read32(pAdapter, IOCMD_CTRL_REG != 0)) &&
|
(pollingcnts > 0)) {
|
pollingcnts--;
|
msleep(20);
|
}
|
if (pollingcnts == 0)
|
return false;
|
return true;
|
}
|
|
void r8712_fw_cmd_data(struct _adapter *pAdapter, u32 *value, u8 flag)
|
{
|
if (flag == 0) /* set */
|
r8712_write32(pAdapter, IOCMD_DATA_REG, *value);
|
else /* query */
|
*value = r8712_read32(pAdapter, IOCMD_DATA_REG);
|
}
|
|
int r8712_cmd_thread(void *context)
|
{
|
struct cmd_obj *pcmd;
|
unsigned int cmdsz, wr_sz;
|
__le32 *pcmdbuf;
|
struct tx_desc *pdesc;
|
void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd);
|
struct _adapter *padapter = context;
|
struct cmd_priv *pcmdpriv = &padapter->cmdpriv;
|
struct completion *cmd_queue_comp =
|
&pcmdpriv->cmd_queue_comp;
|
struct mutex *pwctrl_lock = &padapter->pwrctrlpriv.mutex_lock;
|
|
allow_signal(SIGTERM);
|
while (1) {
|
if (wait_for_completion_interruptible(cmd_queue_comp))
|
break;
|
if (padapter->driver_stopped || padapter->surprise_removed)
|
break;
|
if (r8712_register_cmd_alive(padapter))
|
continue;
|
_next:
|
pcmd = r8712_dequeue_cmd(&pcmdpriv->cmd_queue);
|
if (!(pcmd)) {
|
r8712_unregister_cmd_alive(padapter);
|
continue;
|
}
|
pcmdbuf = (__le32 *)pcmdpriv->cmd_buf;
|
pdesc = (struct tx_desc *)pcmdbuf;
|
memset(pdesc, 0, TXDESC_SIZE);
|
pcmd = cmd_hdl_filter(padapter, pcmd);
|
if (pcmd) { /* if pcmd != NULL, cmd will be handled by f/w */
|
struct dvobj_priv *pdvobj = &padapter->dvobjpriv;
|
u8 blnPending = 0;
|
u16 cmdcode = pcmd->cmdcode;
|
|
pcmdpriv->cmd_issued_cnt++;
|
cmdsz = round_up(pcmd->cmdsz, 8);
|
wr_sz = TXDESC_SIZE + 8 + cmdsz;
|
pdesc->txdw0 |= cpu_to_le32((wr_sz - TXDESC_SIZE) &
|
0x0000ffff);
|
if (pdvobj->ishighspeed) {
|
if ((wr_sz % 512) == 0)
|
blnPending = 1;
|
} else {
|
if ((wr_sz % 64) == 0)
|
blnPending = 1;
|
}
|
if (blnPending) { /* 32 bytes for TX Desc - 8 offset */
|
pdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE +
|
OFFSET_SZ + 8) << OFFSET_SHT) &
|
0x00ff0000);
|
} else {
|
pdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE +
|
OFFSET_SZ) <<
|
OFFSET_SHT) &
|
0x00ff0000);
|
}
|
pdesc->txdw0 |= cpu_to_le32(OWN | FSG | LSG);
|
pdesc->txdw1 |= cpu_to_le32((0x13 << QSEL_SHT) &
|
0x00001f00);
|
pcmdbuf += (TXDESC_SIZE >> 2);
|
*pcmdbuf = cpu_to_le32((cmdsz & 0x0000ffff) |
|
(pcmd->cmdcode << 16) |
|
(pcmdpriv->cmd_seq << 24));
|
pcmdbuf += 2; /* 8 bytes alignment */
|
memcpy((u8 *)pcmdbuf, pcmd->parmbuf, pcmd->cmdsz);
|
if (blnPending)
|
wr_sz += 8; /* Append 8 bytes */
|
r8712_write_mem(padapter, RTL8712_DMA_H2CCMD, wr_sz,
|
(u8 *)pdesc);
|
pcmdpriv->cmd_seq++;
|
if (cmdcode == GEN_CMD_CODE(_CreateBss)) {
|
pcmd->res = H2C_SUCCESS;
|
pcmd_callback = cmd_callback[cmdcode].callback;
|
if (pcmd_callback)
|
pcmd_callback(padapter, pcmd);
|
continue;
|
}
|
if (cmdcode == GEN_CMD_CODE(_SetPwrMode)) {
|
if (padapter->pwrctrlpriv.bSleep) {
|
mutex_lock(pwctrl_lock);
|
r8712_set_rpwm(padapter, PS_STATE_S2);
|
mutex_unlock(pwctrl_lock);
|
}
|
}
|
r8712_free_cmd_obj(pcmd);
|
if (list_empty(&pcmdpriv->cmd_queue.queue)) {
|
r8712_unregister_cmd_alive(padapter);
|
continue;
|
} else {
|
goto _next;
|
}
|
} else {
|
goto _next;
|
}
|
flush_signals_thread();
|
}
|
/* free all cmd_obj resources */
|
do {
|
pcmd = r8712_dequeue_cmd(&pcmdpriv->cmd_queue);
|
if (!pcmd)
|
break;
|
r8712_free_cmd_obj(pcmd);
|
} while (1);
|
complete(&pcmdpriv->terminate_cmdthread_comp);
|
thread_exit();
|
}
|
|
void r8712_event_handle(struct _adapter *padapter, __le32 *peventbuf)
|
{
|
u8 evt_code, evt_seq;
|
u16 evt_sz;
|
void (*event_callback)(struct _adapter *dev, u8 *pbuf);
|
struct evt_priv *pevt_priv = &padapter->evtpriv;
|
|
if (!peventbuf)
|
goto _abort_event_;
|
evt_sz = (u16)(le32_to_cpu(*peventbuf) & 0xffff);
|
evt_seq = (u8)((le32_to_cpu(*peventbuf) >> 24) & 0x7f);
|
evt_code = (u8)((le32_to_cpu(*peventbuf) >> 16) & 0xff);
|
/* checking event sequence... */
|
if ((evt_seq & 0x7f) != pevt_priv->event_seq) {
|
pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
|
goto _abort_event_;
|
}
|
/* checking if event code is valid */
|
if (evt_code >= MAX_C2HEVT) {
|
pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
|
goto _abort_event_;
|
} else if ((evt_code == GEN_EVT_CODE(_Survey)) &&
|
(evt_sz > sizeof(struct wlan_bssid_ex))) {
|
pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
|
goto _abort_event_;
|
}
|
/* checking if event size match the event parm size */
|
if ((wlanevents[evt_code].parmsize) &&
|
(wlanevents[evt_code].parmsize != evt_sz)) {
|
pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
|
goto _abort_event_;
|
} else if ((evt_sz == 0) && (evt_code != GEN_EVT_CODE(_WPS_PBC))) {
|
pevt_priv->event_seq = ((evt_seq + 1) & 0x7f);
|
goto _abort_event_;
|
}
|
pevt_priv->event_seq++; /* update evt_seq */
|
if (pevt_priv->event_seq > 127)
|
pevt_priv->event_seq = 0;
|
/* move to event content, 8 bytes alignment */
|
peventbuf = peventbuf + 2;
|
event_callback = wlanevents[evt_code].event_callback;
|
if (event_callback)
|
event_callback(padapter, (u8 *)peventbuf);
|
pevt_priv->evt_done_cnt++;
|
_abort_event_:
|
return;
|
}
|
