cmd.c

   1 /*
   2  * carl9170 firmware - used by the ar9170 wireless device
   3  *
   4  * Code to handle commands from the host driver.
   5  *
   6  * Copyright (c) 2000-2005 ZyDAS Technology Corporation
   7  * Copyright (c) 2007-2009 Atheros Communications, Inc.
   8  * Copyright    2009    Johannes Berg <johannes@sipsolutions.net>
   9  * Copyright 2009, 2010 Christian Lamparter <chunkeey@googlemail.com>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; if not, write to the Free Software Foundation, Inc.,
  23  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include "carl9170.h"
  27 #include "io.h"
  28 #include "cam.h"
  29 #include "rf.h"
  30 #include "printf.h"
  31 #include "timer.h"
  32 #include "wl.h"
  33
  34 void handle_cmd(struct carl9170_rsp *resp)
  35 {
  36         struct carl9170_cmd *cmd = &dma_mem.reserved.cmd.cmd;
  37         unsigned int i;
  38
  39         /* copies cmd, len and extra fields */
  40         resp->hdr.len = cmd->hdr.len;
  41         resp->hdr.cmd = cmd->hdr.cmd;
  42         resp->hdr.ext = cmd->hdr.ext;
  43         resp->hdr.seq |= cmd->hdr.seq;
  44
  45         switch (cmd->hdr.cmd & ~CARL9170_CMD_ASYNC_FLAG) {
  46         case CARL9170_CMD_RREG:
  47                 for (i = 0; i < (cmd->hdr.len / 4); i++)
  48                         resp->rreg_res.vals[i] = get(cmd->rreg.regs[i]);
  49                 break;
  50
  51         case CARL9170_CMD_WREG:
  52                 resp->hdr.len = 0;
  53                 for (i = 0; i < (cmd->hdr.len / 8); i++)
  54                         set(cmd->wreg.regs[i].addr, cmd->wreg.regs[i].val);
  55                 break;
  56
  57         case CARL9170_CMD_ECHO:
  58                 memcpy(resp->echo.vals, cmd->echo.vals, cmd->hdr.len);
  59                 break;
  60
  61         case CARL9170_CMD_SWRST:
  62 #ifdef CONFIG_CARL9170FW_FW_MAC_RESET
  63                 /*
  64                  * Command has no payload, so the response
  65                  * has no payload either.
  66                  * resp->hdr.len = 0;
  67                  */
  68                 fw.wlan.mac_reset = CARL9170_MAC_RESET_FORCE;
  69 #endif /* CONFIG_CARL9170FW_FW_MAC_RESET */
  70                 break;
  71
  72         case CARL9170_CMD_REBOOT:
  73                 /*
  74                  * resp->len = 0;
  75                  */
  76                 fw.reboot = 1;
  77                 break;
  78
  79         case CARL9170_CMD_READ_TSF:
  80                 resp->hdr.len = 8;
  81                 read_tsf((uint32_t *)resp->tsf.tsf);
  82                 break;
  83
  84 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
  85         case CARL9170_CMD_FLUSH_CAB:
  86                 resp->hdr.len = 0;
  87
  88                 if (cmd->cab_flush.mode & CARL9170_CAB_FLUSH_CAB_TRIGGER) {
  89                         wlan_cab_modify_dtim_beacon(cmd->cab_flush.vif_id);
  90                         set(AR9170_MAC_REG_BCN_CTRL, AR9170_BCN_CTRL_READY);
  91                 } else {
  92                         wlan_cab_flush_queue(cmd->cab_flush.vif_id);
  93                         fw.wlan.cab_flush_trigger[i] = CARL9170_CAB_TRIGGER_EMPTY;
  94                 }
  95                 break;
  96 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
  97
  98 #ifdef CONFIG_CARL9170FW_SECURITY_ENGINE
  99         case CARL9170_CMD_EKEY:
 100                 resp->hdr.len = 0;
 101                 set_key(&cmd->setkey);
 102                 break;
 103
 104         case CARL9170_CMD_DKEY:
 105                 resp->hdr.len = 0;
 106                 disable_key(&cmd->disablekey);
 107                 break;
 108 #endif /* CONFIG_CARL9170FW_SECURIT_ENGINE */
 109
 110 #ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
 111         case CARL9170_CMD_FREQUENCY:
 112         case CARL9170_CMD_RF_INIT:
 113                 rf_cmd(cmd, resp);
 114                 break;
 115
 116         case CARL9170_CMD_FREQ_START:
 117                 /*
 118                  * resp->hdr.len = 0;
 119                  */
 120                 rf_notify_set_channel();
 121                 break;
 122
 123 # ifdef CONFIG_CARL9170FW_PSM
 124         case CARL9170_CMD_PSM:
 125                 resp->hdr.len = 0;
 126                 fw.phy.psm.state = le32_to_cpu(cmd->psm.state);
 127                 rf_psm();
 128                 break;
 129 # endif /* CONFIG_CARL9170FW_PSM */
 130 #endif /* CONFIG_CARL9170FW_RADIO_FUNCTIOS */
 131
 132         default:
 133                 BUG("Unknown command %x\n", cmd->hdr.cmd);
 134                 break;
 135         }
 136 }