| // 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_macreg_hdl(struct _adapter *padapter, u8 *pbuf) |
| { |
| void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); |
| struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; |
| |
| /* invoke cmd->callback function */ |
| 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_macreg_hdl(struct _adapter *padapter, u8 *pbuf) |
| { |
| void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); |
| struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; |
| |
| /* invoke cmd->callback function */ |
| 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_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_MACREG): |
| read_macreg_hdl(padapter, (u8 *)pcmd); |
| pcmd_r = pcmd; |
| break; |
| case GEN_CMD_CODE(_Write_MACREG): |
| write_macreg_hdl(padapter, (u8 *)pcmd); |
| pcmd_r = pcmd; |
| break; |
| 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. */ |
| } |
| |
| static u8 check_cmd_fifo(struct _adapter *padapter, uint sz) |
| { |
| return _SUCCESS; |
| } |
| |
| 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->bDriverStopped || padapter->bSurpriseRemoved) |
| break; |
| if (r8712_register_cmd_alive(padapter) != _SUCCESS) |
| 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); |
| while (check_cmd_fifo(padapter, wr_sz) == _FAIL) { |
| if (padapter->bDriverStopped || |
| padapter->bSurpriseRemoved) |
| break; |
| msleep(100); |
| continue; |
| } |
| 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; |
| } |