| /****************************************************************************** |
| * |
| * This file is provided under a dual BSD/GPLv2 license. When using or |
| * redistributing this file, you may do so under either license. |
| * |
| * GPL LICENSE SUMMARY |
| * |
| * Copyright(c) 2010 - 2011 Intel Corporation. All rights reserved. |
| * |
| * 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 |
| * |
| * The full GNU General Public License is included in this distribution |
| * in the file called LICENSE.GPL. |
| * |
| * Contact Information: |
| * Intel Linux Wireless <ilw@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| * BSD LICENSE |
| * |
| * Copyright(c) 2010 - 2011 Intel Corporation. All rights reserved. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| *****************************************************************************/ |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <net/net_namespace.h> |
| #include <linux/netdevice.h> |
| #include <net/cfg80211.h> |
| #include <net/mac80211.h> |
| #include <net/netlink.h> |
| |
| #include "iwl-dev.h" |
| #include "iwl-core.h" |
| #include "iwl-debug.h" |
| #include "iwl-fh.h" |
| #include "iwl-io.h" |
| #include "iwl-agn.h" |
| #include "iwl-testmode.h" |
| |
| |
| /* The TLVs used in the gnl message policy between the kernel module and |
| * user space application. iwl_testmode_gnl_msg_policy is to be carried |
| * through the NL80211_CMD_TESTMODE channel regulated by nl80211. |
| * See iwl-testmode.h |
| */ |
| static |
| struct nla_policy iwl_testmode_gnl_msg_policy[IWL_TM_ATTR_MAX] = { |
| [IWL_TM_ATTR_COMMAND] = { .type = NLA_U32, }, |
| |
| [IWL_TM_ATTR_UCODE_CMD_ID] = { .type = NLA_U8, }, |
| [IWL_TM_ATTR_UCODE_CMD_DATA] = { .type = NLA_UNSPEC, }, |
| |
| [IWL_TM_ATTR_REG_OFFSET] = { .type = NLA_U32, }, |
| [IWL_TM_ATTR_REG_VALUE8] = { .type = NLA_U8, }, |
| [IWL_TM_ATTR_REG_VALUE32] = { .type = NLA_U32, }, |
| |
| [IWL_TM_ATTR_SYNC_RSP] = { .type = NLA_UNSPEC, }, |
| [IWL_TM_ATTR_UCODE_RX_PKT] = { .type = NLA_UNSPEC, }, |
| |
| [IWL_TM_ATTR_EEPROM] = { .type = NLA_UNSPEC, }, |
| |
| [IWL_TM_ATTR_TRACE_ADDR] = { .type = NLA_UNSPEC, }, |
| [IWL_TM_ATTR_TRACE_DUMP] = { .type = NLA_UNSPEC, }, |
| [IWL_TM_ATTR_TRACE_SIZE] = { .type = NLA_U32, }, |
| |
| [IWL_TM_ATTR_FIXRATE] = { .type = NLA_U32, }, |
| |
| }; |
| |
| /* |
| * See the struct iwl_rx_packet in iwl-commands.h for the format of the |
| * received events from the device |
| */ |
| static inline int get_event_length(struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| if (pkt) |
| return le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; |
| else |
| return 0; |
| } |
| |
| |
| /* |
| * This function multicasts the spontaneous messages from the device to the |
| * user space. It is invoked whenever there is a received messages |
| * from the device. This function is called within the ISR of the rx handlers |
| * in iwlagn driver. |
| * |
| * The parsing of the message content is left to the user space application, |
| * The message content is treated as unattacked raw data and is encapsulated |
| * with IWL_TM_ATTR_UCODE_RX_PKT multicasting to the user space. |
| * |
| * @priv: the instance of iwlwifi device |
| * @rxb: pointer to rx data content received by the ISR |
| * |
| * See the message policies and TLVs in iwl_testmode_gnl_msg_policy[]. |
| * For the messages multicasting to the user application, the mandatory |
| * TLV fields are : |
| * IWL_TM_ATTR_COMMAND must be IWL_TM_CMD_DEV2APP_UCODE_RX_PKT |
| * IWL_TM_ATTR_UCODE_RX_PKT for carrying the message content |
| */ |
| |
| static void iwl_testmode_ucode_rx_pkt(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct ieee80211_hw *hw = priv->hw; |
| struct sk_buff *skb; |
| void *data; |
| int length; |
| |
| data = (void *)rxb_addr(rxb); |
| length = get_event_length(rxb); |
| |
| if (!data || length == 0) |
| return; |
| |
| skb = cfg80211_testmode_alloc_event_skb(hw->wiphy, 20 + length, |
| GFP_ATOMIC); |
| if (skb == NULL) { |
| IWL_DEBUG_INFO(priv, |
| "Run out of memory for messages to user space ?\n"); |
| return; |
| } |
| NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND, IWL_TM_CMD_DEV2APP_UCODE_RX_PKT); |
| NLA_PUT(skb, IWL_TM_ATTR_UCODE_RX_PKT, length, data); |
| cfg80211_testmode_event(skb, GFP_ATOMIC); |
| return; |
| |
| nla_put_failure: |
| kfree_skb(skb); |
| IWL_DEBUG_INFO(priv, "Ouch, overran buffer, check allocation!\n"); |
| } |
| |
| void iwl_testmode_init(struct iwl_priv *priv) |
| { |
| priv->pre_rx_handler = iwl_testmode_ucode_rx_pkt; |
| priv->testmode_trace.trace_enabled = false; |
| } |
| |
| static void iwl_trace_cleanup(struct iwl_priv *priv) |
| { |
| struct device *dev = priv->bus.dev; |
| |
| if (priv->testmode_trace.trace_enabled) { |
| if (priv->testmode_trace.cpu_addr && |
| priv->testmode_trace.dma_addr) |
| dma_free_coherent(dev, |
| priv->testmode_trace.total_size, |
| priv->testmode_trace.cpu_addr, |
| priv->testmode_trace.dma_addr); |
| priv->testmode_trace.trace_enabled = false; |
| priv->testmode_trace.cpu_addr = NULL; |
| priv->testmode_trace.trace_addr = NULL; |
| priv->testmode_trace.dma_addr = 0; |
| priv->testmode_trace.buff_size = 0; |
| priv->testmode_trace.total_size = 0; |
| } |
| } |
| |
| |
| void iwl_testmode_cleanup(struct iwl_priv *priv) |
| { |
| iwl_trace_cleanup(priv); |
| } |
| |
| /* |
| * This function handles the user application commands to the ucode. |
| * |
| * It retrieves the mandatory fields IWL_TM_ATTR_UCODE_CMD_ID and |
| * IWL_TM_ATTR_UCODE_CMD_DATA and calls to the handler to send the |
| * host command to the ucode. |
| * |
| * If any mandatory field is missing, -ENOMSG is replied to the user space |
| * application; otherwise, the actual execution result of the host command to |
| * ucode is replied. |
| * |
| * @hw: ieee80211_hw object that represents the device |
| * @tb: gnl message fields from the user space |
| */ |
| static int iwl_testmode_ucode(struct ieee80211_hw *hw, struct nlattr **tb) |
| { |
| struct iwl_priv *priv = hw->priv; |
| struct iwl_host_cmd cmd; |
| |
| memset(&cmd, 0, sizeof(struct iwl_host_cmd)); |
| |
| if (!tb[IWL_TM_ATTR_UCODE_CMD_ID] || |
| !tb[IWL_TM_ATTR_UCODE_CMD_DATA]) { |
| IWL_DEBUG_INFO(priv, |
| "Error finding ucode command mandatory fields\n"); |
| return -ENOMSG; |
| } |
| |
| cmd.id = nla_get_u8(tb[IWL_TM_ATTR_UCODE_CMD_ID]); |
| cmd.data[0] = nla_data(tb[IWL_TM_ATTR_UCODE_CMD_DATA]); |
| cmd.len[0] = nla_len(tb[IWL_TM_ATTR_UCODE_CMD_DATA]); |
| cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; |
| IWL_INFO(priv, "testmode ucode command ID 0x%x, flags 0x%x," |
| " len %d\n", cmd.id, cmd.flags, cmd.len[0]); |
| /* ok, let's submit the command to ucode */ |
| return iwl_send_cmd(priv, &cmd); |
| } |
| |
| |
| /* |
| * This function handles the user application commands for register access. |
| * |
| * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the |
| * handlers respectively. |
| * |
| * If it's an unknown commdn ID, -ENOSYS is returned; or -ENOMSG if the |
| * mandatory fields(IWL_TM_ATTR_REG_OFFSET,IWL_TM_ATTR_REG_VALUE32, |
| * IWL_TM_ATTR_REG_VALUE8) are missing; Otherwise 0 is replied indicating |
| * the success of the command execution. |
| * |
| * If IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_REG_READ32, the register read |
| * value is returned with IWL_TM_ATTR_REG_VALUE32. |
| * |
| * @hw: ieee80211_hw object that represents the device |
| * @tb: gnl message fields from the user space |
| */ |
| static int iwl_testmode_reg(struct ieee80211_hw *hw, struct nlattr **tb) |
| { |
| struct iwl_priv *priv = hw->priv; |
| u32 ofs, val32; |
| u8 val8; |
| struct sk_buff *skb; |
| int status = 0; |
| |
| if (!tb[IWL_TM_ATTR_REG_OFFSET]) { |
| IWL_DEBUG_INFO(priv, "Error finding register offset\n"); |
| return -ENOMSG; |
| } |
| ofs = nla_get_u32(tb[IWL_TM_ATTR_REG_OFFSET]); |
| IWL_INFO(priv, "testmode register access command offset 0x%x\n", ofs); |
| |
| switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { |
| case IWL_TM_CMD_APP2DEV_REG_READ32: |
| val32 = iwl_read32(priv, ofs); |
| IWL_INFO(priv, "32bit value to read 0x%x\n", val32); |
| |
| skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20); |
| if (!skb) { |
| IWL_DEBUG_INFO(priv, "Error allocating memory\n"); |
| return -ENOMEM; |
| } |
| NLA_PUT_U32(skb, IWL_TM_ATTR_REG_VALUE32, val32); |
| status = cfg80211_testmode_reply(skb); |
| if (status < 0) |
| IWL_DEBUG_INFO(priv, |
| "Error sending msg : %d\n", status); |
| break; |
| case IWL_TM_CMD_APP2DEV_REG_WRITE32: |
| if (!tb[IWL_TM_ATTR_REG_VALUE32]) { |
| IWL_DEBUG_INFO(priv, |
| "Error finding value to write\n"); |
| return -ENOMSG; |
| } else { |
| val32 = nla_get_u32(tb[IWL_TM_ATTR_REG_VALUE32]); |
| IWL_INFO(priv, "32bit value to write 0x%x\n", val32); |
| iwl_write32(priv, ofs, val32); |
| } |
| break; |
| case IWL_TM_CMD_APP2DEV_REG_WRITE8: |
| if (!tb[IWL_TM_ATTR_REG_VALUE8]) { |
| IWL_DEBUG_INFO(priv, "Error finding value to write\n"); |
| return -ENOMSG; |
| } else { |
| val8 = nla_get_u8(tb[IWL_TM_ATTR_REG_VALUE8]); |
| IWL_INFO(priv, "8bit value to write 0x%x\n", val8); |
| iwl_write8(priv, ofs, val8); |
| } |
| break; |
| default: |
| IWL_DEBUG_INFO(priv, "Unknown testmode register command ID\n"); |
| return -ENOSYS; |
| } |
| |
| return status; |
| |
| nla_put_failure: |
| kfree_skb(skb); |
| return -EMSGSIZE; |
| } |
| |
| |
| static int iwl_testmode_cfg_init_calib(struct iwl_priv *priv) |
| { |
| struct iwl_notification_wait calib_wait; |
| int ret; |
| |
| iwlagn_init_notification_wait(priv, &calib_wait, |
| CALIBRATION_COMPLETE_NOTIFICATION, |
| NULL, NULL); |
| ret = iwlagn_init_alive_start(priv); |
| if (ret) { |
| IWL_DEBUG_INFO(priv, |
| "Error configuring init calibration: %d\n", ret); |
| goto cfg_init_calib_error; |
| } |
| |
| ret = iwlagn_wait_notification(priv, &calib_wait, 2 * HZ); |
| if (ret) |
| IWL_DEBUG_INFO(priv, "Error detecting" |
| " CALIBRATION_COMPLETE_NOTIFICATION: %d\n", ret); |
| return ret; |
| |
| cfg_init_calib_error: |
| iwlagn_remove_notification(priv, &calib_wait); |
| return ret; |
| } |
| |
| /* |
| * This function handles the user application commands for driver. |
| * |
| * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the |
| * handlers respectively. |
| * |
| * If it's an unknown commdn ID, -ENOSYS is replied; otherwise, the returned |
| * value of the actual command execution is replied to the user application. |
| * |
| * If there's any message responding to the user space, IWL_TM_ATTR_SYNC_RSP |
| * is used for carry the message while IWL_TM_ATTR_COMMAND must set to |
| * IWL_TM_CMD_DEV2APP_SYNC_RSP. |
| * |
| * @hw: ieee80211_hw object that represents the device |
| * @tb: gnl message fields from the user space |
| */ |
| static int iwl_testmode_driver(struct ieee80211_hw *hw, struct nlattr **tb) |
| { |
| struct iwl_priv *priv = hw->priv; |
| struct sk_buff *skb; |
| unsigned char *rsp_data_ptr = NULL; |
| int status = 0, rsp_data_len = 0; |
| |
| switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { |
| case IWL_TM_CMD_APP2DEV_GET_DEVICENAME: |
| rsp_data_ptr = (unsigned char *)priv->cfg->name; |
| rsp_data_len = strlen(priv->cfg->name); |
| skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, |
| rsp_data_len + 20); |
| if (!skb) { |
| IWL_DEBUG_INFO(priv, |
| "Error allocating memory\n"); |
| return -ENOMEM; |
| } |
| NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND, |
| IWL_TM_CMD_DEV2APP_SYNC_RSP); |
| NLA_PUT(skb, IWL_TM_ATTR_SYNC_RSP, |
| rsp_data_len, rsp_data_ptr); |
| status = cfg80211_testmode_reply(skb); |
| if (status < 0) |
| IWL_DEBUG_INFO(priv, "Error sending msg : %d\n", |
| status); |
| break; |
| |
| case IWL_TM_CMD_APP2DEV_LOAD_INIT_FW: |
| status = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_init, |
| IWL_UCODE_INIT); |
| if (status) |
| IWL_DEBUG_INFO(priv, |
| "Error loading init ucode: %d\n", status); |
| break; |
| |
| case IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB: |
| iwl_testmode_cfg_init_calib(priv); |
| iwlagn_stop_device(priv); |
| break; |
| |
| case IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW: |
| status = iwlagn_load_ucode_wait_alive(priv, |
| &priv->ucode_rt, |
| IWL_UCODE_REGULAR); |
| if (status) { |
| IWL_DEBUG_INFO(priv, |
| "Error loading runtime ucode: %d\n", status); |
| break; |
| } |
| status = iwl_alive_start(priv); |
| if (status) |
| IWL_DEBUG_INFO(priv, |
| "Error starting the device: %d\n", status); |
| break; |
| |
| case IWL_TM_CMD_APP2DEV_GET_EEPROM: |
| if (priv->eeprom) { |
| skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, |
| priv->cfg->base_params->eeprom_size + 20); |
| if (!skb) { |
| IWL_DEBUG_INFO(priv, |
| "Error allocating memory\n"); |
| return -ENOMEM; |
| } |
| NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND, |
| IWL_TM_CMD_DEV2APP_EEPROM_RSP); |
| NLA_PUT(skb, IWL_TM_ATTR_EEPROM, |
| priv->cfg->base_params->eeprom_size, |
| priv->eeprom); |
| status = cfg80211_testmode_reply(skb); |
| if (status < 0) |
| IWL_DEBUG_INFO(priv, |
| "Error sending msg : %d\n", |
| status); |
| } else |
| return -EFAULT; |
| break; |
| |
| case IWL_TM_CMD_APP2DEV_FIXRATE_REQ: |
| if (!tb[IWL_TM_ATTR_FIXRATE]) { |
| IWL_DEBUG_INFO(priv, |
| "Error finding fixrate setting\n"); |
| return -ENOMSG; |
| } |
| priv->dbg_fixed_rate = nla_get_u32(tb[IWL_TM_ATTR_FIXRATE]); |
| break; |
| |
| default: |
| IWL_DEBUG_INFO(priv, "Unknown testmode driver command ID\n"); |
| return -ENOSYS; |
| } |
| return status; |
| |
| nla_put_failure: |
| kfree_skb(skb); |
| return -EMSGSIZE; |
| } |
| |
| |
| /* |
| * This function handles the user application commands for uCode trace |
| * |
| * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the |
| * handlers respectively. |
| * |
| * If it's an unknown commdn ID, -ENOSYS is replied; otherwise, the returned |
| * value of the actual command execution is replied to the user application. |
| * |
| * @hw: ieee80211_hw object that represents the device |
| * @tb: gnl message fields from the user space |
| */ |
| static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb) |
| { |
| struct iwl_priv *priv = hw->priv; |
| struct sk_buff *skb; |
| int status = 0; |
| struct device *dev = priv->bus.dev; |
| |
| switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { |
| case IWL_TM_CMD_APP2DEV_BEGIN_TRACE: |
| if (priv->testmode_trace.trace_enabled) |
| return -EBUSY; |
| |
| if (!tb[IWL_TM_ATTR_TRACE_SIZE]) |
| priv->testmode_trace.buff_size = TRACE_BUFF_SIZE_DEF; |
| else |
| priv->testmode_trace.buff_size = |
| nla_get_u32(tb[IWL_TM_ATTR_TRACE_SIZE]); |
| if (!priv->testmode_trace.buff_size) |
| return -EINVAL; |
| if (priv->testmode_trace.buff_size < TRACE_BUFF_SIZE_MIN || |
| priv->testmode_trace.buff_size > TRACE_BUFF_SIZE_MAX) |
| return -EINVAL; |
| |
| priv->testmode_trace.total_size = |
| priv->testmode_trace.buff_size + TRACE_BUFF_PADD; |
| priv->testmode_trace.cpu_addr = |
| dma_alloc_coherent(dev, |
| priv->testmode_trace.total_size, |
| &priv->testmode_trace.dma_addr, |
| GFP_KERNEL); |
| if (!priv->testmode_trace.cpu_addr) |
| return -ENOMEM; |
| priv->testmode_trace.trace_enabled = true; |
| priv->testmode_trace.trace_addr = (u8 *)PTR_ALIGN( |
| priv->testmode_trace.cpu_addr, 0x100); |
| memset(priv->testmode_trace.trace_addr, 0x03B, |
| priv->testmode_trace.buff_size); |
| skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, |
| sizeof(priv->testmode_trace.dma_addr) + 20); |
| if (!skb) { |
| IWL_DEBUG_INFO(priv, |
| "Error allocating memory\n"); |
| iwl_trace_cleanup(priv); |
| return -ENOMEM; |
| } |
| NLA_PUT(skb, IWL_TM_ATTR_TRACE_ADDR, |
| sizeof(priv->testmode_trace.dma_addr), |
| (u64 *)&priv->testmode_trace.dma_addr); |
| status = cfg80211_testmode_reply(skb); |
| if (status < 0) { |
| IWL_DEBUG_INFO(priv, |
| "Error sending msg : %d\n", |
| status); |
| } |
| priv->testmode_trace.num_chunks = |
| DIV_ROUND_UP(priv->testmode_trace.buff_size, |
| TRACE_CHUNK_SIZE); |
| break; |
| |
| case IWL_TM_CMD_APP2DEV_END_TRACE: |
| iwl_trace_cleanup(priv); |
| break; |
| default: |
| IWL_DEBUG_INFO(priv, "Unknown testmode mem command ID\n"); |
| return -ENOSYS; |
| } |
| return status; |
| |
| nla_put_failure: |
| kfree_skb(skb); |
| if (nla_get_u32(tb[IWL_TM_ATTR_COMMAND]) == |
| IWL_TM_CMD_APP2DEV_BEGIN_TRACE) |
| iwl_trace_cleanup(priv); |
| return -EMSGSIZE; |
| } |
| |
| static int iwl_testmode_trace_dump(struct ieee80211_hw *hw, struct nlattr **tb, |
| struct sk_buff *skb, |
| struct netlink_callback *cb) |
| { |
| struct iwl_priv *priv = hw->priv; |
| int idx, length; |
| |
| if (priv->testmode_trace.trace_enabled && |
| priv->testmode_trace.trace_addr) { |
| idx = cb->args[4]; |
| if (idx >= priv->testmode_trace.num_chunks) |
| return -ENOENT; |
| length = TRACE_CHUNK_SIZE; |
| if (((idx + 1) == priv->testmode_trace.num_chunks) && |
| (priv->testmode_trace.buff_size % TRACE_CHUNK_SIZE)) |
| length = priv->testmode_trace.buff_size % |
| TRACE_CHUNK_SIZE; |
| |
| NLA_PUT(skb, IWL_TM_ATTR_TRACE_DUMP, length, |
| priv->testmode_trace.trace_addr + |
| (TRACE_CHUNK_SIZE * idx)); |
| idx++; |
| cb->args[4] = idx; |
| return 0; |
| } else |
| return -EFAULT; |
| |
| nla_put_failure: |
| return -ENOBUFS; |
| } |
| |
| /* The testmode gnl message handler that takes the gnl message from the |
| * user space and parses it per the policy iwl_testmode_gnl_msg_policy, then |
| * invoke the corresponding handlers. |
| * |
| * This function is invoked when there is user space application sending |
| * gnl message through the testmode tunnel NL80211_CMD_TESTMODE regulated |
| * by nl80211. |
| * |
| * It retrieves the mandatory field, IWL_TM_ATTR_COMMAND, before |
| * dispatching it to the corresponding handler. |
| * |
| * If IWL_TM_ATTR_COMMAND is missing, -ENOMSG is replied to user application; |
| * -ENOSYS is replied to the user application if the command is unknown; |
| * Otherwise, the command is dispatched to the respective handler. |
| * |
| * @hw: ieee80211_hw object that represents the device |
| * @data: pointer to user space message |
| * @len: length in byte of @data |
| */ |
| int iwl_testmode_cmd(struct ieee80211_hw *hw, void *data, int len) |
| { |
| struct nlattr *tb[IWL_TM_ATTR_MAX - 1]; |
| struct iwl_priv *priv = hw->priv; |
| int result; |
| |
| result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len, |
| iwl_testmode_gnl_msg_policy); |
| if (result != 0) { |
| IWL_DEBUG_INFO(priv, |
| "Error parsing the gnl message : %d\n", result); |
| return result; |
| } |
| |
| /* IWL_TM_ATTR_COMMAND is absolutely mandatory */ |
| if (!tb[IWL_TM_ATTR_COMMAND]) { |
| IWL_DEBUG_INFO(priv, "Error finding testmode command type\n"); |
| return -ENOMSG; |
| } |
| /* in case multiple accesses to the device happens */ |
| mutex_lock(&priv->mutex); |
| |
| switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { |
| case IWL_TM_CMD_APP2DEV_UCODE: |
| IWL_DEBUG_INFO(priv, "testmode cmd to uCode\n"); |
| result = iwl_testmode_ucode(hw, tb); |
| break; |
| case IWL_TM_CMD_APP2DEV_REG_READ32: |
| case IWL_TM_CMD_APP2DEV_REG_WRITE32: |
| case IWL_TM_CMD_APP2DEV_REG_WRITE8: |
| IWL_DEBUG_INFO(priv, "testmode cmd to register\n"); |
| result = iwl_testmode_reg(hw, tb); |
| break; |
| case IWL_TM_CMD_APP2DEV_GET_DEVICENAME: |
| case IWL_TM_CMD_APP2DEV_LOAD_INIT_FW: |
| case IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB: |
| case IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW: |
| case IWL_TM_CMD_APP2DEV_GET_EEPROM: |
| case IWL_TM_CMD_APP2DEV_FIXRATE_REQ: |
| IWL_DEBUG_INFO(priv, "testmode cmd to driver\n"); |
| result = iwl_testmode_driver(hw, tb); |
| break; |
| |
| case IWL_TM_CMD_APP2DEV_BEGIN_TRACE: |
| case IWL_TM_CMD_APP2DEV_END_TRACE: |
| case IWL_TM_CMD_APP2DEV_READ_TRACE: |
| IWL_DEBUG_INFO(priv, "testmode uCode trace cmd to driver\n"); |
| result = iwl_testmode_trace(hw, tb); |
| break; |
| |
| default: |
| IWL_DEBUG_INFO(priv, "Unknown testmode command\n"); |
| result = -ENOSYS; |
| break; |
| } |
| |
| mutex_unlock(&priv->mutex); |
| return result; |
| } |
| |
| int iwl_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *skb, |
| struct netlink_callback *cb, |
| void *data, int len) |
| { |
| struct nlattr *tb[IWL_TM_ATTR_MAX]; |
| struct iwl_priv *priv = hw->priv; |
| int result; |
| u32 cmd; |
| |
| if (cb->args[3]) { |
| /* offset by 1 since commands start at 0 */ |
| cmd = cb->args[3] - 1; |
| } else { |
| result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len, |
| iwl_testmode_gnl_msg_policy); |
| if (result) { |
| IWL_DEBUG_INFO(priv, |
| "Error parsing the gnl message : %d\n", result); |
| return result; |
| } |
| |
| /* IWL_TM_ATTR_COMMAND is absolutely mandatory */ |
| if (!tb[IWL_TM_ATTR_COMMAND]) { |
| IWL_DEBUG_INFO(priv, |
| "Error finding testmode command type\n"); |
| return -ENOMSG; |
| } |
| cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]); |
| cb->args[3] = cmd + 1; |
| } |
| |
| /* in case multiple accesses to the device happens */ |
| mutex_lock(&priv->mutex); |
| switch (cmd) { |
| case IWL_TM_CMD_APP2DEV_READ_TRACE: |
| IWL_DEBUG_INFO(priv, "uCode trace cmd to driver\n"); |
| result = iwl_testmode_trace_dump(hw, tb, skb, cb); |
| break; |
| default: |
| result = -EINVAL; |
| break; |
| } |
| |
| mutex_unlock(&priv->mutex); |
| return result; |
| } |