/****************************************************************************** * rtl8712_cmd.c * * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved. * Linux device driver for RTL8192SU * * 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 * * 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/init.h> #include <linux/slab.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_byteorder.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 privde 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) == true) { 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 = 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 == NULL) 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 == NULL) r8712_free_cmd_obj(pcmd); else pcmd_callback(padapter, pcmd); return H2C_SUCCESS; } static u8 read_bbreg_hdl(struct _adapter *padapter, u8 *pbuf) { u32 val; void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); struct readBB_parm *prdbbparm; struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; prdbbparm = (struct readBB_parm *)pcmd->parmbuf; if (pcmd->rsp && pcmd->rspsz > 0) memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz); pcmd_callback = cmd_callback[pcmd->cmdcode].callback; if (pcmd_callback == NULL) r8712_free_cmd_obj(pcmd); else pcmd_callback(padapter, 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 writeBB_parm *pwritebbparm; struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; pwritebbparm = (struct writeBB_parm *)pcmd->parmbuf; pcmd_callback = cmd_callback[pcmd->cmdcode].callback; if (pcmd_callback == NULL) 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 readRF_parm *prdrfparm; struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; prdrfparm = (struct readRF_parm *)pcmd->parmbuf; if (pcmd->rsp && pcmd->rspsz > 0) memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz); pcmd_callback = cmd_callback[pcmd->cmdcode].callback; if (pcmd_callback == NULL) 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 writeRF_parm *pwriterfparm; struct cmd_obj *pcmd = (struct cmd_obj *)pbuf; pwriterfparm = (struct writeRF_parm *)pcmd->parmbuf; pcmd_callback = cmd_callback[pcmd->cmdcode].callback; if (pcmd_callback == NULL) 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; struct usb_suspend_parm *psetusbsuspend; psetusbsuspend = (struct usb_suspend_parm *)pcmd->parmbuf; 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 == NULL) 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; _enter_pwrlock(&(padapter->pwrctrlpriv.lock)); r8712_set_rpwm(padapter, PS_STATE_S4); up(&(padapter->pwrctrlpriv.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) { u8 res = _SUCCESS; return res; } u8 r8712_fw_cmd(struct _adapter *pAdapter, u32 cmd) { int pollingcnts = 50; r8712_write32(pAdapter, IOCMD_CTRL_REG, cmd); msleep(100); while ((0 != r8712_read32(pAdapter, IOCMD_CTRL_REG)) && (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, *pcmdbuf, *prspbuf; struct tx_desc *pdesc; void (*pcmd_callback)(struct _adapter *dev, struct cmd_obj *pcmd); struct _adapter *padapter = (struct _adapter *)context; struct cmd_priv *pcmdpriv = &(padapter->cmdpriv); thread_enter(padapter); while (1) { if ((_down_sema(&(pcmdpriv->cmd_queue_sema))) == _FAIL) break; if ((padapter->bDriverStopped == true) || (padapter->bSurpriseRemoved == true)) 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 = (unsigned int *)pcmdpriv->cmd_buf; prspbuf = (unsigned int *)pcmdpriv->rsp_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 = (struct dvobj_priv *) &padapter->dvobjpriv; u8 blnPending = 0; pcmdpriv->cmd_issued_cnt++; cmdsz = _RND8((pcmd->cmdsz)); /* _RND8 */ 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 aligment */ memcpy((u8 *)pcmdbuf, pcmd->parmbuf, pcmd->cmdsz); while (check_cmd_fifo(padapter, wr_sz) == _FAIL) { if ((padapter->bDriverStopped == true) || (padapter->bSurpriseRemoved == true)) 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 (pcmd->cmdcode == GEN_CMD_CODE(_CreateBss)) { pcmd->res = H2C_SUCCESS; pcmd_callback = cmd_callback[pcmd-> cmdcode].callback; if (pcmd_callback) pcmd_callback(padapter, pcmd); continue; } if (pcmd->cmdcode == GEN_CMD_CODE(_SetPwrMode)) { if (padapter->pwrctrlpriv.bSleep) { _enter_pwrlock(&(padapter-> pwrctrlpriv.lock)); r8712_set_rpwm(padapter, PS_STATE_S2); up(&padapter->pwrctrlpriv.lock); } } r8712_free_cmd_obj(pcmd); if (_queue_empty(&(pcmdpriv->cmd_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 == NULL) break; r8712_free_cmd_obj(pcmd); } while (1); up(&pcmdpriv->terminate_cmdthread_sema); thread_exit(); } void r8712_event_handle(struct _adapter *padapter, uint *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 == NULL) 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; peventbuf = peventbuf + 2; /* move to event content, 8 bytes aligment */ if (peventbuf) { event_callback = wlanevents[evt_code].event_callback; if (event_callback) event_callback(padapter, (u8 *)peventbuf); } pevt_priv->evt_done_cnt++; _abort_event_: return; }