/******************************************************************************
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 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
*
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-helpers.h"
#include "iwl-agn-hw.h"
#include "iwl-agn.h"
#include "iwl-agn-calib.h"
#include "iwl-trans.h"
#include "iwl-fh.h"
static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = {
{COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP,
0, COEX_UNASSOC_IDLE_FLAGS},
{COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP,
0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
{COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP,
0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
{COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP,
0, COEX_CALIBRATION_FLAGS},
{COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP,
0, COEX_PERIODIC_CALIBRATION_FLAGS},
{COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP,
0, COEX_CONNECTION_ESTAB_FLAGS},
{COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP,
0, COEX_ASSOCIATED_IDLE_FLAGS},
{COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP,
0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
{COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP,
0, COEX_ASSOC_AUTO_SCAN_FLAGS},
{COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP,
0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
{COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS},
{COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS},
{COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP,
0, COEX_STAND_ALONE_DEBUG_FLAGS},
{COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP,
0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
{COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS},
{COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS}
};
/*
* ucode
*/
static int iwlagn_load_section(struct iwl_priv *priv, const char *name,
struct fw_desc *image, u32 dst_addr)
{
dma_addr_t phy_addr = image->p_addr;
u32 byte_cnt = image->len;
int ret;
priv->ucode_write_complete = 0;
iwl_write_direct32(bus(priv),
FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE);
iwl_write_direct32(bus(priv),
FH_SRVC_CHNL_SRAM_ADDR_REG(FH_SRVC_CHNL), dst_addr);
iwl_write_direct32(bus(priv),
FH_TFDIB_CTRL0_REG(FH_SRVC_CHNL),
phy_addr & FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK);
iwl_write_direct32(bus(priv),
FH_TFDIB_CTRL1_REG(FH_SRVC_CHNL),
(iwl_get_dma_hi_addr(phy_addr)
<< FH_MEM_TFDIB_REG1_ADDR_BITSHIFT) | byte_cnt);
iwl_write_direct32(bus(priv),
FH_TCSR_CHNL_TX_BUF_STS_REG(FH_SRVC_CHNL),
1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM |
1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX |
FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID);
iwl_write_direct32(bus(priv),
FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE |
FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD);
IWL_DEBUG_FW(priv, "%s uCode section being loaded...\n", name);
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
priv->ucode_write_complete, 5 * HZ);
if (ret == -ERESTARTSYS) {
IWL_ERR(priv, "Could not load the %s uCode section due "
"to interrupt\n", name);
return ret;
}
if (!ret) {
IWL_ERR(priv, "Could not load the %s uCode section\n",
name);
return -ETIMEDOUT;
}
return 0;
}
static int iwlagn_load_given_ucode(struct iwl_priv *priv,
struct fw_img *image)
{
int ret = 0;
ret = iwlagn_load_section(priv, "INST", &image->code,
IWLAGN_RTC_INST_LOWER_BOUND);
if (ret)
return ret;
return iwlagn_load_section(priv, "DATA", &image->data,
IWLAGN_RTC_DATA_LOWER_BOUND);
}
/*
* Calibration
*/
static int iwlagn_set_Xtal_calib(struct iwl_priv *priv)
{
struct iwl_calib_xtal_freq_cmd cmd;
__le16 *xtal_calib =
(__le16 *)iwl_eeprom_query_addr(priv, EEPROM_XTAL);
iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_CRYSTAL_FRQ_CMD);
cmd.cap_pin1 = le16_to_cpu(xtal_calib[0]);
cmd.cap_pin2 = le16_to_cpu(xtal_calib[1]);
return iwl_calib_set(&priv->calib_results[IWL_CALIB_XTAL],
(u8 *)&cmd, sizeof(cmd));
}
static int iwlagn_set_temperature_offset_calib(struct iwl_priv *priv)
{
struct iwl_calib_temperature_offset_cmd cmd;
__le16 *offset_calib =
(__le16 *)iwl_eeprom_query_addr(priv, EEPROM_TEMPERATURE);
memset(&cmd, 0, sizeof(cmd));
iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
memcpy(&cmd.radio_sensor_offset, offset_calib, sizeof(offset_calib));
if (!(cmd.radio_sensor_offset))
cmd.radio_sensor_offset = DEFAULT_RADIO_SENSOR_OFFSET;
IWL_DEBUG_CALIB(priv, "Radio sensor offset: %d\n",
le16_to_cpu(cmd.radio_sensor_offset));
return iwl_calib_set(&priv->calib_results[IWL_CALIB_TEMP_OFFSET],
(u8 *)&cmd, sizeof(cmd));
}
static int iwlagn_send_calib_cfg(struct iwl_priv *priv)
{
struct iwl_calib_cfg_cmd calib_cfg_cmd;
struct iwl_host_cmd cmd = {
.id = CALIBRATION_CFG_CMD,
.len = { sizeof(struct iwl_calib_cfg_cmd), },
.data = { &calib_cfg_cmd, },
};
memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
calib_cfg_cmd.ucd_calib_cfg.once.start = IWL_CALIB_INIT_CFG_ALL;
calib_cfg_cmd.ucd_calib_cfg.once.send_res = IWL_CALIB_INIT_CFG_ALL;
calib_cfg_cmd.ucd_calib_cfg.flags =
IWL_CALIB_CFG_FLAG_SEND_COMPLETE_NTFY_MSK;
return iwl_trans_send_cmd(trans(priv), &cmd);
}
void iwlagn_rx_calib_result(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_calib_hdr *hdr = (struct iwl_calib_hdr *)pkt->u.raw;
int len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
int index;
/* reduce the size of the length field itself */
len -= 4;
/* Define the order in which the results will be sent to the runtime
* uCode. iwl_send_calib_results sends them in a row according to
* their index. We sort them here
*/
switch (hdr->op_code) {
case IWL_PHY_CALIBRATE_DC_CMD:
index = IWL_CALIB_DC;
break;
case IWL_PHY_CALIBRATE_LO_CMD:
index = IWL_CALIB_LO;
break;
case IWL_PHY_CALIBRATE_TX_IQ_CMD:
index = IWL_CALIB_TX_IQ;
break;
case IWL_PHY_CALIBRATE_TX_IQ_PERD_CMD:
index = IWL_CALIB_TX_IQ_PERD;
break;
case IWL_PHY_CALIBRATE_BASE_BAND_CMD:
index = IWL_CALIB_BASE_BAND;
break;
default:
IWL_ERR(priv, "Unknown calibration notification %d\n",
hdr->op_code);
return;
}
iwl_calib_set(&priv->calib_results[index], pkt->u.raw, len);
}
int iwlagn_init_alive_start(struct iwl_priv *priv)
{
int ret;
if (priv->cfg->bt_params &&
priv->cfg->bt_params->advanced_bt_coexist) {
/*
* Tell uCode we are ready to perform calibration
* need to perform this before any calibration
* no need to close the envlope since we are going
* to load the runtime uCode later.
*/
ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
if (ret)
return ret;
}
ret = iwlagn_send_calib_cfg(priv);
if (ret)
return ret;
/**
* temperature offset calibration is only needed for runtime ucode,
* so prepare the value now.
*/
if (priv->cfg->need_temp_offset_calib)
return iwlagn_set_temperature_offset_calib(priv);
return 0;
}
static int iwlagn_send_wimax_coex(struct iwl_priv *priv)
{
struct iwl_wimax_coex_cmd coex_cmd;
if (priv->cfg->base_params->support_wimax_coexist) {
/* UnMask wake up src at associated sleep */
coex_cmd.flags = COEX_FLAGS_ASSOC_WA_UNMASK_MSK;
/* UnMask wake up src at unassociated sleep */
coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
memcpy(coex_cmd.sta_prio, cu_priorities,
sizeof(struct iwl_wimax_coex_event_entry) *
COEX_NUM_OF_EVENTS);
/* enabling the coexistence feature */
coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;
/* enabling the priorities tables */
coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
} else {
/* coexistence is disabled */
memset(&coex_cmd, 0, sizeof(coex_cmd));
}
return iwl_trans_send_cmd_pdu(trans(priv),
COEX_PRIORITY_TABLE_CMD, CMD_SYNC,
sizeof(coex_cmd), &coex_cmd);
}
static const u8 iwlagn_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
(0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
(1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
(0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
(1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
(0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
(1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
(0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
((BT_COEX_PRIO_TBL_PRIO_COEX_OFF << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
(0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
((BT_COEX_PRIO_TBL_PRIO_COEX_ON << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
(0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
0, 0, 0, 0, 0, 0, 0
};
void iwlagn_send_prio_tbl(struct iwl_priv *priv)
{
struct iwl_bt_coex_prio_table_cmd prio_tbl_cmd;
memcpy(prio_tbl_cmd.prio_tbl, iwlagn_bt_prio_tbl,
sizeof(iwlagn_bt_prio_tbl));
if (iwl_trans_send_cmd_pdu(trans(priv),
REPLY_BT_COEX_PRIO_TABLE, CMD_SYNC,
sizeof(prio_tbl_cmd), &prio_tbl_cmd))
IWL_ERR(priv, "failed to send BT prio tbl command\n");
}
int iwlagn_send_bt_env(struct iwl_priv *priv, u8 action, u8 type)
{
struct iwl_bt_coex_prot_env_cmd env_cmd;
int ret;
env_cmd.action = action;
env_cmd.type = type;
ret = iwl_trans_send_cmd_pdu(trans(priv),
REPLY_BT_COEX_PROT_ENV, CMD_SYNC,
sizeof(env_cmd), &env_cmd);
if (ret)
IWL_ERR(priv, "failed to send BT env command\n");
return ret;
}
static int iwlagn_alive_notify(struct iwl_priv *priv)
{
int ret;
iwl_trans_tx_start(trans(priv));
ret = iwlagn_send_wimax_coex(priv);
if (ret)
return ret;
ret = iwlagn_set_Xtal_calib(priv);
if (ret)
return ret;
return iwl_send_calib_results(priv);
}
/**
* iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
* using sample data 100 bytes apart. If these sample points are good,
* it's a pretty good bet that everything between them is good, too.
*/
static int iwl_verify_inst_sparse(struct iwl_priv *priv,
struct fw_desc *fw_desc)
{
__le32 *image = (__le32 *)fw_desc->v_addr;
u32 len = fw_desc->len;
u32 val;
u32 i;
IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
/* read data comes through single port, auto-incr addr */
/* NOTE: Use the debugless read so we don't flood kernel log
* if IWL_DL_IO is set */
iwl_write_direct32(bus(priv), HBUS_TARG_MEM_RADDR,
i + IWLAGN_RTC_INST_LOWER_BOUND);
val = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
if (val != le32_to_cpu(*image))
return -EIO;
}
return 0;
}
static void iwl_print_mismatch_inst(struct iwl_priv *priv,
struct fw_desc *fw_desc)
{
__le32 *image = (__le32 *)fw_desc->v_addr;
u32 len = fw_desc->len;
u32 val;
u32 offs;
int errors = 0;
IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
iwl_write_direct32(bus(priv), HBUS_TARG_MEM_RADDR,
IWLAGN_RTC_INST_LOWER_BOUND);
for (offs = 0;
offs < len && errors < 20;
offs += sizeof(u32), image++) {
/* read data comes through single port, auto-incr addr */
val = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
if (val != le32_to_cpu(*image)) {
IWL_ERR(priv, "uCode INST section at "
"offset 0x%x, is 0x%x, s/b 0x%x\n",
offs, val, le32_to_cpu(*image));
errors++;
}
}
}
/**
* iwl_verify_ucode - determine which instruction image is in SRAM,
* and verify its contents
*/
static int iwl_verify_ucode(struct iwl_priv *priv, struct fw_img *img)
{
if (!iwl_verify_inst_sparse(priv, &img->code)) {
IWL_DEBUG_FW(priv, "uCode is good in inst SRAM\n");
return 0;
}
IWL_ERR(priv, "UCODE IMAGE IN INSTRUCTION SRAM NOT VALID!!\n");
iwl_print_mismatch_inst(priv, &img->code);
return -EIO;
}
struct iwlagn_alive_data {
bool valid;
u8 subtype;
};
static void iwlagn_alive_fn(struct iwl_priv *priv,
struct iwl_rx_packet *pkt,
void *data)
{
struct iwlagn_alive_data *alive_data = data;
struct iwl_alive_resp *palive;
palive = &pkt->u.alive_frame;
IWL_DEBUG_FW(priv, "Alive ucode status 0x%08X revision "
"0x%01X 0x%01X\n",
palive->is_valid, palive->ver_type,
palive->ver_subtype);
priv->device_pointers.error_event_table =
le32_to_cpu(palive->error_event_table_ptr);
priv->device_pointers.log_event_table =
le32_to_cpu(palive->log_event_table_ptr);
alive_data->subtype = palive->ver_subtype;
alive_data->valid = palive->is_valid == UCODE_VALID_OK;
}
#define UCODE_ALIVE_TIMEOUT HZ
#define UCODE_CALIB_TIMEOUT (2*HZ)
int iwlagn_load_ucode_wait_alive(struct iwl_priv *priv,
struct fw_img *image,
enum iwlagn_ucode_type ucode_type)
{
struct iwl_notification_wait alive_wait;
struct iwlagn_alive_data alive_data;
int ret;
enum iwlagn_ucode_type old_type;
ret = iwl_trans_start_device(trans(priv));
if (ret)
return ret;
iwlagn_init_notification_wait(priv, &alive_wait, REPLY_ALIVE,
iwlagn_alive_fn, &alive_data);
old_type = priv->ucode_type;
priv->ucode_type = ucode_type;
ret = iwlagn_load_given_ucode(priv, image);
if (ret) {
priv->ucode_type = old_type;
iwlagn_remove_notification(priv, &alive_wait);
return ret;
}
iwl_trans_kick_nic(trans(priv));
/*
* Some things may run in the background now, but we
* just wait for the ALIVE notification here.
*/
ret = iwlagn_wait_notification(priv, &alive_wait, UCODE_ALIVE_TIMEOUT);
if (ret) {
priv->ucode_type = old_type;
return ret;
}
if (!alive_data.valid) {
IWL_ERR(priv, "Loaded ucode is not valid!\n");
priv->ucode_type = old_type;
return -EIO;
}
/*
* This step takes a long time (60-80ms!!) and
* WoWLAN image should be loaded quickly, so
* skip it for WoWLAN.
*/
if (ucode_type != IWL_UCODE_WOWLAN) {
ret = iwl_verify_ucode(priv, image);
if (ret) {
priv->ucode_type = old_type;
return ret;
}
/* delay a bit to give rfkill time to run */
msleep(5);
}
ret = iwlagn_alive_notify(priv);
if (ret) {
IWL_WARN(priv,
"Could not complete ALIVE transition: %d\n", ret);
priv->ucode_type = old_type;
return ret;
}
return 0;
}
int iwlagn_run_init_ucode(struct iwl_priv *priv)
{
struct iwl_notification_wait calib_wait;
int ret;
lockdep_assert_held(&priv->shrd->mutex);
/* No init ucode required? Curious, but maybe ok */
if (!priv->ucode_init.code.len)
return 0;
if (priv->ucode_type != IWL_UCODE_NONE)
return 0;
iwlagn_init_notification_wait(priv, &calib_wait,
CALIBRATION_COMPLETE_NOTIFICATION,
NULL, NULL);
/* Will also start the device */
ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_init,
IWL_UCODE_INIT);
if (ret)
goto error;
ret = iwlagn_init_alive_start(priv);
if (ret)
goto error;
/*
* Some things may run in the background now, but we
* just wait for the calibration complete notification.
*/
ret = iwlagn_wait_notification(priv, &calib_wait, UCODE_CALIB_TIMEOUT);
goto out;
error:
iwlagn_remove_notification(priv, &calib_wait);
out:
/* Whatever happened, stop the device */
iwl_trans_stop_device(trans(priv));
return ret;
}
