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linux/drivers/net/wireless/iwlwifi/iwl-testmode.c

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/******************************************************************************
*
* 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 - 2012 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 - 2012 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 <linux/dma-mapping.h>
#include <net/net_namespace.h>
#include <linux/netdevice.h>
#include <net/cfg80211.h>
#include <net/mac80211.h>
#include <net/netlink.h>
#include "iwl-wifi.h"
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-debug.h"
#include "iwl-io.h"
#include "iwl-agn.h"
#include "iwl-testmode.h"
#include "iwl-trans.h"
#include "iwl-bus.h"
#include "iwl-fh.h"
/* Periphery registers absolute lower bound. This is used in order to
* differentiate registery access through HBUS_TARG_PRPH_* and
* HBUS_TARG_MEM_* accesses.
*/
#define IWL_TM_ABS_PRPH_START (0xA00000)
/* 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, },
[IWL_TM_ATTR_UCODE_OWNER] = { .type = NLA_U8, },
[IWL_TM_ATTR_MEM_ADDR] = { .type = NLA_U32, },
[IWL_TM_ATTR_BUFFER_SIZE] = { .type = NLA_U32, },
[IWL_TM_ATTR_BUFFER_DUMP] = { .type = NLA_UNSPEC, },
[IWL_TM_ATTR_FW_VERSION] = { .type = NLA_U32, },
[IWL_TM_ATTR_DEVICE_ID] = { .type = NLA_U32, },
[IWL_TM_ATTR_FW_TYPE] = { .type = NLA_U32, },
[IWL_TM_ATTR_FW_INST_SIZE] = { .type = NLA_U32, },
[IWL_TM_ATTR_FW_DATA_SIZE] = { .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_ERR(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_ERR(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;
priv->testmode_mem.read_in_progress = false;
}
static void iwl_mem_cleanup(struct iwl_priv *priv)
{
if (priv->testmode_mem.read_in_progress) {
kfree(priv->testmode_mem.buff_addr);
priv->testmode_mem.buff_addr = NULL;
priv->testmode_mem.buff_size = 0;
priv->testmode_mem.num_chunks = 0;
priv->testmode_mem.read_in_progress = false;
}
}
static void iwl_trace_cleanup(struct iwl_priv *priv)
{
if (priv->testmode_trace.trace_enabled) {
if (priv->testmode_trace.cpu_addr &&
priv->testmode_trace.dma_addr)
dma_free_coherent(trans(priv)->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);
iwl_mem_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, waits for the host command to be sent and checks
* the return code. In case or error, it is returned, otherwise a reply is
* allocated and the reply RX packet
* is returned.
*
* @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;
struct iwl_rx_packet *pkt;
struct sk_buff *skb;
void *reply_buf;
u32 reply_len;
int ret;
bool cmd_want_skb;
memset(&cmd, 0, sizeof(struct iwl_host_cmd));
if (!tb[IWL_TM_ATTR_UCODE_CMD_ID] ||
!tb[IWL_TM_ATTR_UCODE_CMD_DATA]) {
IWL_ERR(priv, "Missing ucode command mandatory fields\n");
return -ENOMSG;
}
cmd.flags = CMD_ON_DEMAND | CMD_SYNC;
cmd_want_skb = nla_get_flag(tb[IWL_TM_ATTR_UCODE_CMD_SKB]);
if (cmd_want_skb)
cmd.flags |= CMD_WANT_SKB;
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_DEBUG_INFO(priv, "testmode ucode command ID 0x%x, flags 0x%x,"
" len %d\n", cmd.id, cmd.flags, cmd.len[0]);
ret = iwl_trans_send_cmd(trans(priv), &cmd);
if (ret) {
IWL_ERR(priv, "Failed to send hcmd\n");
return ret;
}
if (!cmd_want_skb)
return ret;
/* Handling return of SKB to the user */
pkt = (struct iwl_rx_packet *)cmd.reply_page;
if (!pkt) {
IWL_ERR(priv, "HCMD received a null response packet\n");
return ret;
}
reply_len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, reply_len + 20);
reply_buf = kmalloc(reply_len, GFP_KERNEL);
if (!skb || !reply_buf) {
kfree_skb(skb);
kfree(reply_buf);
return -ENOMEM;
}
/* The reply is in a page, that we cannot send to user space. */
memcpy(reply_buf, &(pkt->hdr), reply_len);
iwl_free_pages(priv->shrd, cmd.reply_page);
NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND, IWL_TM_CMD_DEV2APP_UCODE_RX_PKT);
NLA_PUT(skb, IWL_TM_ATTR_UCODE_RX_PKT, reply_len, reply_buf);
return cfg80211_testmode_reply(skb);
nla_put_failure:
IWL_DEBUG_INFO(priv, "Failed creating NL attributes\n");
return -ENOMSG;
}
/*
* 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, cmd;
u8 val8;
struct sk_buff *skb;
int status = 0;
if (!tb[IWL_TM_ATTR_REG_OFFSET]) {
IWL_ERR(priv, "Missing 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);
/* Allow access only to FH/CSR/HBUS in direct mode.
Since we don't have the upper bounds for the CSR and HBUS segments,
we will use only the upper bound of FH for sanity check. */
cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]);
if ((cmd == IWL_TM_CMD_APP2DEV_DIRECT_REG_READ32 ||
cmd == IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE32 ||
cmd == IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE8) &&
(ofs >= FH_MEM_UPPER_BOUND)) {
IWL_ERR(priv, "offset out of segment (0x0 - 0x%x)\n",
FH_MEM_UPPER_BOUND);
return -EINVAL;
}
switch (cmd) {
case IWL_TM_CMD_APP2DEV_DIRECT_REG_READ32:
val32 = iwl_read_direct32(trans(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_ERR(priv, "Memory allocation fail\n");
return -ENOMEM;
}
NLA_PUT_U32(skb, IWL_TM_ATTR_REG_VALUE32, val32);
status = cfg80211_testmode_reply(skb);
if (status < 0)
IWL_ERR(priv, "Error sending msg : %d\n", status);
break;
case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE32:
if (!tb[IWL_TM_ATTR_REG_VALUE32]) {
IWL_ERR(priv, "Missing 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_write_direct32(trans(priv), ofs, val32);
}
break;
case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE8:
if (!tb[IWL_TM_ATTR_REG_VALUE8]) {
IWL_ERR(priv, "Missing 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(trans(priv), ofs, val8);
}
break;
default:
IWL_ERR(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;
iwl_init_notification_wait(priv->shrd, &calib_wait,
CALIBRATION_COMPLETE_NOTIFICATION,
NULL, NULL);
ret = iwl_init_alive_start(trans(priv));
if (ret) {
IWL_ERR(priv, "Fail init calibration: %d\n", ret);
goto cfg_init_calib_error;
}
ret = iwl_wait_notification(priv->shrd, &calib_wait, 2 * HZ);
if (ret)
IWL_ERR(priv, "Error detecting"
" CALIBRATION_COMPLETE_NOTIFICATION: %d\n", ret);
return ret;
cfg_init_calib_error:
iwl_remove_notification(priv->shrd, &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 iwl_trans *trans = trans(priv);
struct sk_buff *skb;
unsigned char *rsp_data_ptr = NULL;
int status = 0, rsp_data_len = 0;
u32 devid, inst_size = 0, data_size = 0;
switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) {
case IWL_TM_CMD_APP2DEV_GET_DEVICENAME:
rsp_data_ptr = (unsigned char *)cfg(priv)->name;
rsp_data_len = strlen(cfg(priv)->name);
skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
rsp_data_len + 20);
if (!skb) {
IWL_ERR(priv, "Memory allocation fail\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_ERR(priv, "Error sending msg : %d\n", status);
break;
case IWL_TM_CMD_APP2DEV_LOAD_INIT_FW:
status = iwl_load_ucode_wait_alive(trans, IWL_UCODE_INIT);
if (status)
IWL_ERR(priv, "Error loading init ucode: %d\n", status);
break;
case IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB:
iwl_testmode_cfg_init_calib(priv);
iwl_trans_stop_device(trans);
break;
case IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW:
status = iwl_load_ucode_wait_alive(trans, IWL_UCODE_REGULAR);
if (status) {
IWL_ERR(priv,
"Error loading runtime ucode: %d\n", status);
break;
}
status = iwl_alive_start(priv);
if (status)
IWL_ERR(priv,
"Error starting the device: %d\n", status);
break;
case IWL_TM_CMD_APP2DEV_LOAD_WOWLAN_FW:
iwl_scan_cancel_timeout(priv, 200);
iwl_trans_stop_device(trans);
status = iwl_load_ucode_wait_alive(trans, IWL_UCODE_WOWLAN);
if (status) {
IWL_ERR(priv,
"Error loading WOWLAN ucode: %d\n", status);
break;
}
status = iwl_alive_start(priv);
if (status)
IWL_ERR(priv,
"Error starting the device: %d\n", status);
break;
case IWL_TM_CMD_APP2DEV_GET_EEPROM:
if (priv->shrd->eeprom) {
skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
cfg(priv)->base_params->eeprom_size + 20);
if (!skb) {
IWL_ERR(priv, "Memory allocation fail\n");
return -ENOMEM;
}
NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND,
IWL_TM_CMD_DEV2APP_EEPROM_RSP);
NLA_PUT(skb, IWL_TM_ATTR_EEPROM,
cfg(priv)->base_params->eeprom_size,
priv->shrd->eeprom);
status = cfg80211_testmode_reply(skb);
if (status < 0)
IWL_ERR(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_ERR(priv, "Missing fixrate setting\n");
return -ENOMSG;
}
priv->tm_fixed_rate = nla_get_u32(tb[IWL_TM_ATTR_FIXRATE]);
break;
case IWL_TM_CMD_APP2DEV_GET_FW_VERSION:
IWL_INFO(priv, "uCode version raw: 0x%x\n",
nic(priv)->fw.ucode_ver);
skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20);
if (!skb) {
IWL_ERR(priv, "Memory allocation fail\n");
return -ENOMEM;
}
NLA_PUT_U32(skb, IWL_TM_ATTR_FW_VERSION,
nic(priv)->fw.ucode_ver);
status = cfg80211_testmode_reply(skb);
if (status < 0)
IWL_ERR(priv, "Error sending msg : %d\n", status);
break;
case IWL_TM_CMD_APP2DEV_GET_DEVICE_ID:
devid = trans(priv)->hw_id;
IWL_INFO(priv, "hw version: 0x%x\n", devid);
skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20);
if (!skb) {
IWL_ERR(priv, "Memory allocation fail\n");
return -ENOMEM;
}
NLA_PUT_U32(skb, IWL_TM_ATTR_DEVICE_ID, devid);
status = cfg80211_testmode_reply(skb);
if (status < 0)
IWL_ERR(priv, "Error sending msg : %d\n", status);
break;
case IWL_TM_CMD_APP2DEV_GET_FW_INFO:
skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20 + 8);
if (!skb) {
IWL_ERR(priv, "Memory allocation fail\n");
return -ENOMEM;
}
switch (priv->shrd->ucode_type) {
case IWL_UCODE_REGULAR:
inst_size = nic(priv)->fw.ucode_rt.code.len;
data_size = nic(priv)->fw.ucode_rt.data.len;
break;
case IWL_UCODE_INIT:
inst_size = nic(priv)->fw.ucode_init.code.len;
data_size = nic(priv)->fw.ucode_init.data.len;
break;
case IWL_UCODE_WOWLAN:
inst_size = nic(priv)->fw.ucode_wowlan.code.len;
data_size = nic(priv)->fw.ucode_wowlan.data.len;
break;
case IWL_UCODE_NONE:
IWL_ERR(priv, "No uCode has not been loaded\n");
break;
default:
IWL_ERR(priv, "Unsupported uCode type\n");
break;
}
NLA_PUT_U32(skb, IWL_TM_ATTR_FW_TYPE, priv->shrd->ucode_type);
NLA_PUT_U32(skb, IWL_TM_ATTR_FW_INST_SIZE, inst_size);
NLA_PUT_U32(skb, IWL_TM_ATTR_FW_DATA_SIZE, data_size);
status = cfg80211_testmode_reply(skb);
if (status < 0)
IWL_ERR(priv, "Error sending msg : %d\n", status);
break;
default:
IWL_ERR(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 = trans(priv)->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_ERR(priv, "Memory allocation fail\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_ERR(priv, "Error sending msg : %d\n", status);
}
priv->testmode_trace.num_chunks =
DIV_ROUND_UP(priv->testmode_trace.buff_size,
DUMP_CHUNK_SIZE);
break;
case IWL_TM_CMD_APP2DEV_END_TRACE:
iwl_trace_cleanup(priv);
break;
default:
IWL_ERR(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 = DUMP_CHUNK_SIZE;
if (((idx + 1) == priv->testmode_trace.num_chunks) &&
(priv->testmode_trace.buff_size % DUMP_CHUNK_SIZE))
length = priv->testmode_trace.buff_size %
DUMP_CHUNK_SIZE;
NLA_PUT(skb, IWL_TM_ATTR_TRACE_DUMP, length,
priv->testmode_trace.trace_addr +
(DUMP_CHUNK_SIZE * idx));
idx++;
cb->args[4] = idx;
return 0;
} else
return -EFAULT;
nla_put_failure:
return -ENOBUFS;
}
/*
* This function handles the user application switch ucode ownership.
*
* It retrieves the mandatory fields IWL_TM_ATTR_UCODE_OWNER and
* decide who the current owner of the uCode
*
* If the current owner is OWNERSHIP_TM, then the only host command
* can deliver to uCode is from testmode, all the other host commands
* will dropped.
*
* default driver is the owner of uCode in normal operational mode
*
* @hw: ieee80211_hw object that represents the device
* @tb: gnl message fields from the user space
*/
static int iwl_testmode_ownership(struct ieee80211_hw *hw, struct nlattr **tb)
{
struct iwl_priv *priv = hw->priv;
u8 owner;
if (!tb[IWL_TM_ATTR_UCODE_OWNER]) {
IWL_ERR(priv, "Missing ucode owner\n");
return -ENOMSG;
}
owner = nla_get_u8(tb[IWL_TM_ATTR_UCODE_OWNER]);
if ((owner == IWL_OWNERSHIP_DRIVER) || (owner == IWL_OWNERSHIP_TM))
priv->shrd->ucode_owner = owner;
else {
IWL_ERR(priv, "Invalid owner\n");
return -EINVAL;
}
return 0;
}
static int iwl_testmode_indirect_read(struct iwl_priv *priv, u32 addr, u32 size)
{
struct iwl_trans *trans = trans(priv);
unsigned long flags;
int i;
if (size & 0x3)
return -EINVAL;
priv->testmode_mem.buff_size = size;
priv->testmode_mem.buff_addr =
kmalloc(priv->testmode_mem.buff_size, GFP_KERNEL);
if (priv->testmode_mem.buff_addr == NULL)
return -ENOMEM;
/* Hard-coded periphery absolute address */
if (IWL_TM_ABS_PRPH_START <= addr &&
addr < IWL_TM_ABS_PRPH_START + PRPH_END) {
spin_lock_irqsave(&trans->reg_lock, flags);
iwl_grab_nic_access(trans);
iwl_write32(trans, HBUS_TARG_PRPH_RADDR,
addr | (3 << 24));
for (i = 0; i < size; i += 4)
*(u32 *)(priv->testmode_mem.buff_addr + i) =
iwl_read32(trans, HBUS_TARG_PRPH_RDAT);
iwl_release_nic_access(trans);
spin_unlock_irqrestore(&trans->reg_lock, flags);
} else { /* target memory (SRAM) */
_iwl_read_targ_mem_words(trans, addr,
priv->testmode_mem.buff_addr,
priv->testmode_mem.buff_size / 4);
}
priv->testmode_mem.num_chunks =
DIV_ROUND_UP(priv->testmode_mem.buff_size, DUMP_CHUNK_SIZE);
priv->testmode_mem.read_in_progress = true;
return 0;
}
static int iwl_testmode_indirect_write(struct iwl_priv *priv, u32 addr,
u32 size, unsigned char *buf)
{
struct iwl_trans *trans = trans(priv);
u32 val, i;
unsigned long flags;
if (IWL_TM_ABS_PRPH_START <= addr &&
addr < IWL_TM_ABS_PRPH_START + PRPH_END) {
/* Periphery writes can be 1-3 bytes long, or DWORDs */
if (size < 4) {
memcpy(&val, buf, size);
spin_lock_irqsave(&trans->reg_lock, flags);
iwl_grab_nic_access(trans);
iwl_write32(trans, HBUS_TARG_PRPH_WADDR,
(addr & 0x0000FFFF) |
((size - 1) << 24));
iwl_write32(trans, HBUS_TARG_PRPH_WDAT, val);
iwl_release_nic_access(trans);
/* needed after consecutive writes w/o read */
mmiowb();
spin_unlock_irqrestore(&trans->reg_lock, flags);
} else {
if (size % 4)
return -EINVAL;
for (i = 0; i < size; i += 4)
iwl_write_prph(trans, addr+i,
*(u32 *)(buf+i));
}
} else if (iwlagn_hw_valid_rtc_data_addr(addr) ||
(IWLAGN_RTC_INST_LOWER_BOUND <= addr &&
addr < IWLAGN_RTC_INST_UPPER_BOUND)) {
_iwl_write_targ_mem_words(trans, addr, buf, size/4);
} else
return -EINVAL;
return 0;
}
/*
* This function handles the user application commands for SRAM data dump
*
* It retrieves the mandatory fields IWL_TM_ATTR_SRAM_ADDR and
* IWL_TM_ATTR_SRAM_SIZE to decide the memory area for SRAM data reading
*
* Several error will be retured, -EBUSY if the SRAM data retrieved by
* previous command has not been delivered to userspace, or -ENOMSG if
* the mandatory fields (IWL_TM_ATTR_SRAM_ADDR,IWL_TM_ATTR_SRAM_SIZE)
* are missing, or -ENOMEM if the buffer allocation fails.
*
* Otherwise 0 is replied indicating the success of the SRAM reading.
*
* @hw: ieee80211_hw object that represents the device
* @tb: gnl message fields from the user space
*/
static int iwl_testmode_indirect_mem(struct ieee80211_hw *hw,
struct nlattr **tb)
{
struct iwl_priv *priv = hw->priv;
u32 addr, size, cmd;
unsigned char *buf;
/* Both read and write should be blocked, for atomicity */
if (priv->testmode_mem.read_in_progress)
return -EBUSY;
cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]);
if (!tb[IWL_TM_ATTR_MEM_ADDR]) {
IWL_ERR(priv, "Error finding memory offset address\n");
return -ENOMSG;
}
addr = nla_get_u32(tb[IWL_TM_ATTR_MEM_ADDR]);
if (!tb[IWL_TM_ATTR_BUFFER_SIZE]) {
IWL_ERR(priv, "Error finding size for memory reading\n");
return -ENOMSG;
}
size = nla_get_u32(tb[IWL_TM_ATTR_BUFFER_SIZE]);
if (cmd == IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_READ)
return iwl_testmode_indirect_read(priv, addr, size);
else {
if (!tb[IWL_TM_ATTR_BUFFER_DUMP])
return -EINVAL;
buf = (unsigned char *) nla_data(tb[IWL_TM_ATTR_BUFFER_DUMP]);
return iwl_testmode_indirect_write(priv, addr, size, buf);
}
}
static int iwl_testmode_buffer_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_mem.read_in_progress) {
idx = cb->args[4];
if (idx >= priv->testmode_mem.num_chunks) {
iwl_mem_cleanup(priv);
return -ENOENT;
}
length = DUMP_CHUNK_SIZE;
if (((idx + 1) == priv->testmode_mem.num_chunks) &&
(priv->testmode_mem.buff_size % DUMP_CHUNK_SIZE))
length = priv->testmode_mem.buff_size %
DUMP_CHUNK_SIZE;
NLA_PUT(skb, IWL_TM_ATTR_BUFFER_DUMP, length,
priv->testmode_mem.buff_addr +
(DUMP_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 iwlagn_mac_testmode_cmd(struct ieee80211_hw *hw, void *data, int len)
{
struct nlattr *tb[IWL_TM_ATTR_MAX];
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_ERR(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_ERR(priv, "Missing testmode command type\n");
return -ENOMSG;
}
/* in case multiple accesses to the device happens */
mutex_lock(&priv->shrd->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_DIRECT_REG_READ32:
case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE32:
case IWL_TM_CMD_APP2DEV_DIRECT_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:
case IWL_TM_CMD_APP2DEV_LOAD_WOWLAN_FW:
case IWL_TM_CMD_APP2DEV_GET_FW_VERSION:
case IWL_TM_CMD_APP2DEV_GET_DEVICE_ID:
case IWL_TM_CMD_APP2DEV_GET_FW_INFO:
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;
case IWL_TM_CMD_APP2DEV_OWNERSHIP:
IWL_DEBUG_INFO(priv, "testmode change uCode ownership\n");
result = iwl_testmode_ownership(hw, tb);
break;
case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_READ:
case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_WRITE:
IWL_DEBUG_INFO(priv, "testmode indirect memory cmd "
"to driver\n");
result = iwl_testmode_indirect_mem(hw, tb);
break;
default:
IWL_ERR(priv, "Unknown testmode command\n");
result = -ENOSYS;
break;
}
mutex_unlock(&priv->shrd->mutex);
return result;
}
int iwlagn_mac_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_ERR(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_ERR(priv, "Missing 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->shrd->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;
case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_DUMP:
IWL_DEBUG_INFO(priv, "testmode sram dump cmd to driver\n");
result = iwl_testmode_buffer_dump(hw, tb, skb, cb);
break;
default:
result = -EINVAL;
break;
}
mutex_unlock(&priv->shrd->mutex);
return result;
}
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