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linux/drivers/net/wireless/wl12xx/wl1251_ops.c

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/*
* This file is part of wl1251
*
* Copyright (C) 2008-2009 Nokia Corporation
*
* Contact: Kalle Valo <kalle.valo@nokia.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 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 St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include "wl1251_ops.h"
#include "reg.h"
#include "wl1251_io.h"
#include "wl1251_boot.h"
#include "wl1251_event.h"
#include "wl1251_acx.h"
#include "wl1251_tx.h"
#include "wl1251_rx.h"
#include "wl1251_ps.h"
#include "wl1251_init.h"
static struct wl1251_partition_set wl1251_part_table[PART_TABLE_LEN] = {
[PART_DOWN] = {
.mem = {
.start = 0x00000000,
.size = 0x00016800
},
.reg = {
.start = REGISTERS_BASE,
.size = REGISTERS_DOWN_SIZE
},
},
[PART_WORK] = {
.mem = {
.start = 0x00028000,
.size = 0x00014000
},
.reg = {
.start = REGISTERS_BASE,
.size = REGISTERS_WORK_SIZE
},
},
/* WL1251 doesn't use the DRPW partition, so we don't set it here */
};
static enum wl12xx_acx_int_reg wl1251_acx_reg_table[ACX_REG_TABLE_LEN] = {
[ACX_REG_INTERRUPT_TRIG] = (REGISTERS_BASE + 0x0474),
[ACX_REG_INTERRUPT_TRIG_H] = (REGISTERS_BASE + 0x0478),
[ACX_REG_INTERRUPT_MASK] = (REGISTERS_BASE + 0x0494),
[ACX_REG_HINT_MASK_SET] = (REGISTERS_BASE + 0x0498),
[ACX_REG_HINT_MASK_CLR] = (REGISTERS_BASE + 0x049C),
[ACX_REG_INTERRUPT_NO_CLEAR] = (REGISTERS_BASE + 0x04B0),
[ACX_REG_INTERRUPT_CLEAR] = (REGISTERS_BASE + 0x04A4),
[ACX_REG_INTERRUPT_ACK] = (REGISTERS_BASE + 0x04A8),
[ACX_REG_SLV_SOFT_RESET] = (REGISTERS_BASE + 0x0000),
[ACX_REG_EE_START] = (REGISTERS_BASE + 0x080C),
[ACX_REG_ECPU_CONTROL] = (REGISTERS_BASE + 0x0804)
};
static int wl1251_upload_firmware(struct wl1251 *wl)
{
struct wl1251_partition_set *p_table = wl->chip.p_table;
int addr, chunk_num, partition_limit;
size_t fw_data_len;
u8 *p;
/* whal_FwCtrl_LoadFwImageSm() */
wl1251_debug(DEBUG_BOOT, "chip id before fw upload: 0x%x",
wl1251_reg_read32(wl, CHIP_ID_B));
/* 10.0 check firmware length and set partition */
fw_data_len = (wl->fw[4] << 24) | (wl->fw[5] << 16) |
(wl->fw[6] << 8) | (wl->fw[7]);
wl1251_debug(DEBUG_BOOT, "fw_data_len %zu chunk_size %d", fw_data_len,
CHUNK_SIZE);
if ((fw_data_len % 4) != 0) {
wl1251_error("firmware length not multiple of four");
return -EIO;
}
wl1251_set_partition(wl,
p_table[PART_DOWN].mem.start,
p_table[PART_DOWN].mem.size,
p_table[PART_DOWN].reg.start,
p_table[PART_DOWN].reg.size);
/* 10.1 set partition limit and chunk num */
chunk_num = 0;
partition_limit = p_table[PART_DOWN].mem.size;
while (chunk_num < fw_data_len / CHUNK_SIZE) {
/* 10.2 update partition, if needed */
addr = p_table[PART_DOWN].mem.start +
(chunk_num + 2) * CHUNK_SIZE;
if (addr > partition_limit) {
addr = p_table[PART_DOWN].mem.start +
chunk_num * CHUNK_SIZE;
partition_limit = chunk_num * CHUNK_SIZE +
p_table[PART_DOWN].mem.size;
wl1251_set_partition(wl,
addr,
p_table[PART_DOWN].mem.size,
p_table[PART_DOWN].reg.start,
p_table[PART_DOWN].reg.size);
}
/* 10.3 upload the chunk */
addr = p_table[PART_DOWN].mem.start + chunk_num * CHUNK_SIZE;
p = wl->fw + FW_HDR_SIZE + chunk_num * CHUNK_SIZE;
wl1251_debug(DEBUG_BOOT, "uploading fw chunk 0x%p to 0x%x",
p, addr);
wl1251_mem_write(wl, addr, p, CHUNK_SIZE);
chunk_num++;
}
/* 10.4 upload the last chunk */
addr = p_table[PART_DOWN].mem.start + chunk_num * CHUNK_SIZE;
p = wl->fw + FW_HDR_SIZE + chunk_num * CHUNK_SIZE;
wl1251_debug(DEBUG_BOOT, "uploading fw last chunk (%zu B) 0x%p to 0x%x",
fw_data_len % CHUNK_SIZE, p, addr);
wl1251_mem_write(wl, addr, p, fw_data_len % CHUNK_SIZE);
return 0;
}
static int wl1251_upload_nvs(struct wl1251 *wl)
{
size_t nvs_len, nvs_bytes_written, burst_len;
int nvs_start, i;
u32 dest_addr, val;
u8 *nvs_ptr, *nvs;
nvs = wl->nvs;
if (nvs == NULL)
return -ENODEV;
nvs_ptr = nvs;
nvs_len = wl->nvs_len;
nvs_start = wl->fw_len;
/*
* Layout before the actual NVS tables:
* 1 byte : burst length.
* 2 bytes: destination address.
* n bytes: data to burst copy.
*
* This is ended by a 0 length, then the NVS tables.
*/
while (nvs_ptr[0]) {
burst_len = nvs_ptr[0];
dest_addr = (nvs_ptr[1] & 0xfe) | ((u32)(nvs_ptr[2] << 8));
/* We move our pointer to the data */
nvs_ptr += 3;
for (i = 0; i < burst_len; i++) {
val = (nvs_ptr[0] | (nvs_ptr[1] << 8)
| (nvs_ptr[2] << 16) | (nvs_ptr[3] << 24));
wl1251_debug(DEBUG_BOOT,
"nvs burst write 0x%x: 0x%x",
dest_addr, val);
wl1251_mem_write32(wl, dest_addr, val);
nvs_ptr += 4;
dest_addr += 4;
}
}
/*
* We've reached the first zero length, the first NVS table
* is 7 bytes further.
*/
nvs_ptr += 7;
nvs_len -= nvs_ptr - nvs;
nvs_len = ALIGN(nvs_len, 4);
/* Now we must set the partition correctly */
wl1251_set_partition(wl, nvs_start,
wl->chip.p_table[PART_DOWN].mem.size,
wl->chip.p_table[PART_DOWN].reg.start,
wl->chip.p_table[PART_DOWN].reg.size);
/* And finally we upload the NVS tables */
nvs_bytes_written = 0;
while (nvs_bytes_written < nvs_len) {
val = (nvs_ptr[0] | (nvs_ptr[1] << 8)
| (nvs_ptr[2] << 16) | (nvs_ptr[3] << 24));
val = cpu_to_le32(val);
wl1251_debug(DEBUG_BOOT,
"nvs write table 0x%x: 0x%x",
nvs_start, val);
wl1251_mem_write32(wl, nvs_start, val);
nvs_ptr += 4;
nvs_bytes_written += 4;
nvs_start += 4;
}
return 0;
}
static int wl1251_boot(struct wl1251 *wl)
{
int ret = 0, minor_minor_e2_ver;
u32 tmp, boot_data;
ret = wl1251_boot_soft_reset(wl);
if (ret < 0)
goto out;
/* 2. start processing NVS file */
ret = wl->chip.op_upload_nvs(wl);
if (ret < 0)
goto out;
/* write firmware's last address (ie. it's length) to
* ACX_EEPROMLESS_IND_REG */
wl1251_reg_write32(wl, ACX_EEPROMLESS_IND_REG, wl->fw_len);
/* 6. read the EEPROM parameters */
tmp = wl1251_reg_read32(wl, SCR_PAD2);
/* 7. read bootdata */
wl->boot_attr.radio_type = (tmp & 0x0000FF00) >> 8;
wl->boot_attr.major = (tmp & 0x00FF0000) >> 16;
tmp = wl1251_reg_read32(wl, SCR_PAD3);
/* 8. check bootdata and call restart sequence */
wl->boot_attr.minor = (tmp & 0x00FF0000) >> 16;
minor_minor_e2_ver = (tmp & 0xFF000000) >> 24;
wl1251_debug(DEBUG_BOOT, "radioType 0x%x majorE2Ver 0x%x "
"minorE2Ver 0x%x minor_minor_e2_ver 0x%x",
wl->boot_attr.radio_type, wl->boot_attr.major,
wl->boot_attr.minor, minor_minor_e2_ver);
ret = wl1251_boot_init_seq(wl);
if (ret < 0)
goto out;
/* 9. NVS processing done */
boot_data = wl1251_reg_read32(wl, ACX_REG_ECPU_CONTROL);
wl1251_debug(DEBUG_BOOT, "halt boot_data 0x%x", boot_data);
/* 10. check that ECPU_CONTROL_HALT bits are set in
* pWhalBus->uBootData and start uploading firmware
*/
if ((boot_data & ECPU_CONTROL_HALT) == 0) {
wl1251_error("boot failed, ECPU_CONTROL_HALT not set");
ret = -EIO;
goto out;
}
ret = wl->chip.op_upload_fw(wl);
if (ret < 0)
goto out;
/* 10.5 start firmware */
ret = wl1251_boot_run_firmware(wl);
if (ret < 0)
goto out;
out:
return ret;
}
static int wl1251_mem_cfg(struct wl1251 *wl)
{
struct wl1251_acx_config_memory *mem_conf;
int ret, i;
wl1251_debug(DEBUG_ACX, "wl1251 mem cfg");
mem_conf = kzalloc(sizeof(*mem_conf), GFP_KERNEL);
if (!mem_conf) {
ret = -ENOMEM;
goto out;
}
/* memory config */
mem_conf->mem_config.num_stations = cpu_to_le16(DEFAULT_NUM_STATIONS);
mem_conf->mem_config.rx_mem_block_num = 35;
mem_conf->mem_config.tx_min_mem_block_num = 64;
mem_conf->mem_config.num_tx_queues = MAX_TX_QUEUES;
mem_conf->mem_config.host_if_options = HOSTIF_PKT_RING;
mem_conf->mem_config.num_ssid_profiles = 1;
mem_conf->mem_config.debug_buffer_size =
cpu_to_le16(TRACE_BUFFER_MAX_SIZE);
/* RX queue config */
mem_conf->rx_queue_config.dma_address = 0;
mem_conf->rx_queue_config.num_descs = ACX_RX_DESC_DEF;
mem_conf->rx_queue_config.priority = DEFAULT_RXQ_PRIORITY;
mem_conf->rx_queue_config.type = DEFAULT_RXQ_TYPE;
/* TX queue config */
for (i = 0; i < MAX_TX_QUEUES; i++) {
mem_conf->tx_queue_config[i].num_descs = ACX_TX_DESC_DEF;
mem_conf->tx_queue_config[i].attributes = i;
}
ret = wl1251_cmd_configure(wl, ACX_MEM_CFG, mem_conf,
sizeof(*mem_conf));
if (ret < 0) {
wl1251_warning("wl1251 mem config failed: %d", ret);
goto out;
}
out:
kfree(mem_conf);
return ret;
}
static int wl1251_hw_init_mem_config(struct wl1251 *wl)
{
int ret;
ret = wl1251_mem_cfg(wl);
if (ret < 0)
return ret;
wl->target_mem_map = kzalloc(sizeof(struct wl1251_acx_mem_map),
GFP_KERNEL);
if (!wl->target_mem_map) {
wl1251_error("couldn't allocate target memory map");
return -ENOMEM;
}
/* we now ask for the firmware built memory map */
ret = wl1251_acx_mem_map(wl, wl->target_mem_map,
sizeof(struct wl1251_acx_mem_map));
if (ret < 0) {
wl1251_error("couldn't retrieve firmware memory map");
kfree(wl->target_mem_map);
wl->target_mem_map = NULL;
return ret;
}
return 0;
}
static void wl1251_set_ecpu_ctrl(struct wl1251 *wl, u32 flag)
{
u32 cpu_ctrl;
/* 10.5.0 run the firmware (I) */
cpu_ctrl = wl1251_reg_read32(wl, ACX_REG_ECPU_CONTROL);
/* 10.5.1 run the firmware (II) */
cpu_ctrl &= ~flag;
wl1251_reg_write32(wl, ACX_REG_ECPU_CONTROL, cpu_ctrl);
}
static void wl1251_target_enable_interrupts(struct wl1251 *wl)
{
/* Enable target's interrupts */
wl->intr_mask = WL1251_ACX_INTR_RX0_DATA |
WL1251_ACX_INTR_RX1_DATA |
WL1251_ACX_INTR_TX_RESULT |
WL1251_ACX_INTR_EVENT_A |
WL1251_ACX_INTR_EVENT_B |
WL1251_ACX_INTR_INIT_COMPLETE;
wl1251_boot_target_enable_interrupts(wl);
}
static void wl1251_fw_version(struct wl1251 *wl)
{
wl1251_acx_fw_version(wl, wl->chip.fw_ver, sizeof(wl->chip.fw_ver));
}
static void wl1251_irq_work(struct work_struct *work)
{
u32 intr;
struct wl1251 *wl =
container_of(work, struct wl1251, irq_work);
int ret;
mutex_lock(&wl->mutex);
wl1251_debug(DEBUG_IRQ, "IRQ work");
if (wl->state == WL1251_STATE_OFF)
goto out;
ret = wl1251_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
if (wl->data_path) {
wl->rx_counter =
wl1251_mem_read32(wl, wl->data_path->rx_control_addr);
/* We handle a firmware bug here */
switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
case 0:
wl1251_debug(DEBUG_IRQ, "RX: FW and host in sync");
intr &= ~WL1251_ACX_INTR_RX0_DATA;
intr &= ~WL1251_ACX_INTR_RX1_DATA;
break;
case 1:
wl1251_debug(DEBUG_IRQ, "RX: FW +1");
intr |= WL1251_ACX_INTR_RX0_DATA;
intr &= ~WL1251_ACX_INTR_RX1_DATA;
break;
case 2:
wl1251_debug(DEBUG_IRQ, "RX: FW +2");
intr |= WL1251_ACX_INTR_RX0_DATA;
intr |= WL1251_ACX_INTR_RX1_DATA;
break;
default:
wl1251_warning("RX: FW and host out of sync: %d",
wl->rx_counter - wl->rx_handled);
break;
}
wl->rx_handled = wl->rx_counter;
wl1251_debug(DEBUG_IRQ, "RX counter: %d", wl->rx_counter);
}
intr &= wl->intr_mask;
if (intr == 0) {
wl1251_debug(DEBUG_IRQ, "INTR is 0");
wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
~(wl->intr_mask));
goto out_sleep;
}
if (intr & WL1251_ACX_INTR_RX0_DATA) {
wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
wl1251_rx(wl);
}
if (intr & WL1251_ACX_INTR_RX1_DATA) {
wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
wl1251_rx(wl);
}
if (intr & WL1251_ACX_INTR_TX_RESULT) {
wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
wl1251_tx_complete(wl);
}
if (intr & (WL1251_ACX_INTR_EVENT_A | WL1251_ACX_INTR_EVENT_B)) {
wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)", intr);
if (intr & WL1251_ACX_INTR_EVENT_A)
wl1251_event_handle(wl, 0);
else
wl1251_event_handle(wl, 1);
}
if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_INIT_COMPLETE");
wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
out_sleep:
wl1251_ps_elp_sleep(wl);
out:
mutex_unlock(&wl->mutex);
}
static int wl1251_hw_init_txq_fill(u8 qid,
struct acx_tx_queue_qos_config *config,
u32 num_blocks)
{
config->qid = qid;
switch (qid) {
case QOS_AC_BE:
config->high_threshold =
(QOS_TX_HIGH_BE_DEF * num_blocks) / 100;
config->low_threshold =
(QOS_TX_LOW_BE_DEF * num_blocks) / 100;
break;
case QOS_AC_BK:
config->high_threshold =
(QOS_TX_HIGH_BK_DEF * num_blocks) / 100;
config->low_threshold =
(QOS_TX_LOW_BK_DEF * num_blocks) / 100;
break;
case QOS_AC_VI:
config->high_threshold =
(QOS_TX_HIGH_VI_DEF * num_blocks) / 100;
config->low_threshold =
(QOS_TX_LOW_VI_DEF * num_blocks) / 100;
break;
case QOS_AC_VO:
config->high_threshold =
(QOS_TX_HIGH_VO_DEF * num_blocks) / 100;
config->low_threshold =
(QOS_TX_LOW_VO_DEF * num_blocks) / 100;
break;
default:
wl1251_error("Invalid TX queue id: %d", qid);
return -EINVAL;
}
return 0;
}
static int wl1251_hw_init_tx_queue_config(struct wl1251 *wl)
{
struct acx_tx_queue_qos_config *config;
struct wl1251_acx_mem_map *wl_mem_map = wl->target_mem_map;
int ret, i;
wl1251_debug(DEBUG_ACX, "acx tx queue config");
config = kzalloc(sizeof(*config), GFP_KERNEL);
if (!config) {
ret = -ENOMEM;
goto out;
}
for (i = 0; i < MAX_NUM_OF_AC; i++) {
ret = wl1251_hw_init_txq_fill(i, config,
wl_mem_map->num_tx_mem_blocks);
if (ret < 0)
goto out;
ret = wl1251_cmd_configure(wl, ACX_TX_QUEUE_CFG,
config, sizeof(*config));
if (ret < 0)
goto out;
}
out:
kfree(config);
return ret;
}
static int wl1251_hw_init_data_path_config(struct wl1251 *wl)
{
int ret;
/* asking for the data path parameters */
wl->data_path = kzalloc(sizeof(struct acx_data_path_params_resp),
GFP_KERNEL);
if (!wl->data_path) {
wl1251_error("Couldn't allocate data path parameters");
return -ENOMEM;
}
ret = wl1251_acx_data_path_params(wl, wl->data_path);
if (ret < 0) {
kfree(wl->data_path);
wl->data_path = NULL;
return ret;
}
return 0;
}
static int wl1251_hw_init(struct wl1251 *wl)
{
struct wl1251_acx_mem_map *wl_mem_map;
int ret;
ret = wl1251_hw_init_hwenc_config(wl);
if (ret < 0)
return ret;
/* Template settings */
ret = wl1251_hw_init_templates_config(wl);
if (ret < 0)
return ret;
/* Default memory configuration */
ret = wl1251_hw_init_mem_config(wl);
if (ret < 0)
return ret;
/* Default data path configuration */
ret = wl1251_hw_init_data_path_config(wl);
if (ret < 0)
goto out_free_memmap;
/* RX config */
ret = wl1251_hw_init_rx_config(wl,
RX_CFG_PROMISCUOUS | RX_CFG_TSF,
RX_FILTER_OPTION_DEF);
/* RX_CONFIG_OPTION_ANY_DST_ANY_BSS,
RX_FILTER_OPTION_FILTER_ALL); */
if (ret < 0)
goto out_free_data_path;
/* TX queues config */
ret = wl1251_hw_init_tx_queue_config(wl);
if (ret < 0)
goto out_free_data_path;
/* PHY layer config */
ret = wl1251_hw_init_phy_config(wl);
if (ret < 0)
goto out_free_data_path;
/* Beacon filtering */
ret = wl1251_hw_init_beacon_filter(wl);
if (ret < 0)
goto out_free_data_path;
/* Bluetooth WLAN coexistence */
ret = wl1251_hw_init_pta(wl);
if (ret < 0)
goto out_free_data_path;
/* Energy detection */
ret = wl1251_hw_init_energy_detection(wl);
if (ret < 0)
goto out_free_data_path;
/* Beacons and boradcast settings */
ret = wl1251_hw_init_beacon_broadcast(wl);
if (ret < 0)
goto out_free_data_path;
/* Enable data path */
ret = wl1251_cmd_data_path(wl, wl->channel, 1);
if (ret < 0)
goto out_free_data_path;
/* Default power state */
ret = wl1251_hw_init_power_auth(wl);
if (ret < 0)
goto out_free_data_path;
wl_mem_map = wl->target_mem_map;
wl1251_info("%d tx blocks at 0x%x, %d rx blocks at 0x%x",
wl_mem_map->num_tx_mem_blocks,
wl->data_path->tx_control_addr,
wl_mem_map->num_rx_mem_blocks,
wl->data_path->rx_control_addr);
return 0;
out_free_data_path:
kfree(wl->data_path);
out_free_memmap:
kfree(wl->target_mem_map);
return ret;
}
static int wl1251_plt_init(struct wl1251 *wl)
{
int ret;
ret = wl1251_hw_init_mem_config(wl);
if (ret < 0)
return ret;
ret = wl1251_cmd_data_path(wl, wl->channel, 1);
if (ret < 0)
return ret;
return 0;
}
void wl1251_setup(struct wl1251 *wl)
{
/* FIXME: Is it better to use strncpy here or is this ok? */
wl->chip.fw_filename = WL1251_FW_NAME;
wl->chip.nvs_filename = WL1251_NVS_NAME;
/* Now we know what chip we're using, so adjust the power on sleep
* time accordingly */
wl->chip.power_on_sleep = WL1251_POWER_ON_SLEEP;
wl->chip.intr_cmd_complete = WL1251_ACX_INTR_CMD_COMPLETE;
wl->chip.intr_init_complete = WL1251_ACX_INTR_INIT_COMPLETE;
wl->chip.op_upload_nvs = wl1251_upload_nvs;
wl->chip.op_upload_fw = wl1251_upload_firmware;
wl->chip.op_boot = wl1251_boot;
wl->chip.op_set_ecpu_ctrl = wl1251_set_ecpu_ctrl;
wl->chip.op_target_enable_interrupts = wl1251_target_enable_interrupts;
wl->chip.op_hw_init = wl1251_hw_init;
wl->chip.op_plt_init = wl1251_plt_init;
wl->chip.op_fw_version = wl1251_fw_version;
wl->chip.op_tx_flush = wl1251_tx_flush;
wl->chip.op_cmd_join = wl1251_cmd_join;
wl->chip.p_table = wl1251_part_table;
wl->chip.acx_reg_table = wl1251_acx_reg_table;
INIT_WORK(&wl->irq_work, wl1251_irq_work);
INIT_WORK(&wl->tx_work, wl1251_tx_work);
}
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