- 根目录:
- drivers
- net
- wireless
- ti
- wl1251
- cmd.c
#include "cmd.h"
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/crc7.h>
#include <linux/etherdevice.h>
#include "wl1251.h"
#include "reg.h"
#include "io.h"
#include "ps.h"
#include "acx.h"
/**
* send command to firmware
*
* @wl: wl struct
* @id: command id
* @buf: buffer containing the command, must work with dma
* @len: length of the buffer
*/
int wl1251_cmd_send(struct wl1251 *wl, u16 id, void *buf, size_t len)
{
struct wl1251_cmd_header *cmd;
unsigned long timeout;
u32 intr;
int ret = 0;
cmd = buf;
cmd->id = id;
cmd->status = 0;
WARN_ON(len % 4 != 0);
wl1251_mem_write(wl, wl->cmd_box_addr, buf, len);
wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD);
timeout = jiffies + msecs_to_jiffies(WL1251_COMMAND_TIMEOUT);
intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
while (!(intr & WL1251_ACX_INTR_CMD_COMPLETE)) {
if (time_after(jiffies, timeout)) {
wl1251_error("command complete timeout");
ret = -ETIMEDOUT;
goto out;
}
msleep(1);
intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
}
wl1251_reg_write32(wl, ACX_REG_INTERRUPT_ACK,
WL1251_ACX_INTR_CMD_COMPLETE);
out:
return ret;
}
/**
* send test command to firmware
*
* @wl: wl struct
* @buf: buffer containing the command, with all headers, must work with dma
* @len: length of the buffer
* @answer: is answer needed
*/
int wl1251_cmd_test(struct wl1251 *wl, void *buf, size_t buf_len, u8 answer)
{
int ret;
wl1251_debug(DEBUG_CMD, "cmd test");
ret = wl1251_cmd_send(wl, CMD_TEST, buf, buf_len);
if (ret < 0) {
wl1251_warning("TEST command failed");
return ret;
}
if (answer) {
struct wl1251_command *cmd_answer;
/*
* The test command got in, we can read the answer.
* The answer would be a wl1251_command, where the
* parameter array contains the actual answer.
*/
wl1251_mem_read(wl, wl->cmd_box_addr, buf, buf_len);
cmd_answer = buf;
if (cmd_answer->header.status != CMD_STATUS_SUCCESS)
wl1251_error("TEST command answer error: %d",
cmd_answer->header.status);
}
return 0;
}
/**
* read acx from firmware
*
* @wl: wl struct
* @id: acx id
* @buf: buffer for the response, including all headers, must work with dma
* @len: length of buf
*/
int wl1251_cmd_interrogate(struct wl1251 *wl, u16 id, void *buf, size_t len)
{
struct acx_header *acx = buf;
int ret;
wl1251_debug(DEBUG_CMD, "cmd interrogate");
acx->id = id;
/* payload length, does not include any headers */
acx->len = len - sizeof(*acx);
ret = wl1251_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx));
if (ret < 0) {
wl1251_error("INTERROGATE command failed");
goto out;
}
/* the interrogate command got in, we can read the answer */
wl1251_mem_read(wl, wl->cmd_box_addr, buf, len);
acx = buf;
if (acx->cmd.status != CMD_STATUS_SUCCESS)
wl1251_error("INTERROGATE command error: %d",
acx->cmd.status);
out:
return ret;
}
/**
* write acx value to firmware
*
* @wl: wl struct
* @id: acx id
* @buf: buffer containing acx, including all headers, must work with dma
* @len: length of buf
*/
int wl1251_cmd_configure(struct wl1251 *wl, u16 id, void *buf, size_t len)
{
struct acx_header *acx = buf;
int ret;
wl1251_debug(DEBUG_CMD, "cmd configure");
acx->id = id;
/* payload length, does not include any headers */
acx->len = len - sizeof(*acx);
ret = wl1251_cmd_send(wl, CMD_CONFIGURE, acx, len);
if (ret < 0) {
wl1251_warning("CONFIGURE command NOK");
return ret;
}
return 0;
}
int wl1251_cmd_vbm(struct wl1251 *wl, u8 identity,
void *bitmap, u16 bitmap_len, u8 bitmap_control)
{
struct wl1251_cmd_vbm_update *vbm;
int ret;
wl1251_debug(DEBUG_CMD, "cmd vbm");
vbm = kzalloc(sizeof(*vbm), GFP_KERNEL);
if (!vbm) {
ret = -ENOMEM;
goto out;
}
/* Count and period will be filled by the target */
vbm->tim.bitmap_ctrl = bitmap_control;
if (bitmap_len > PARTIAL_VBM_MAX) {
wl1251_warning("cmd vbm len is %d B, truncating to %d",
bitmap_len, PARTIAL_VBM_MAX);
bitmap_len = PARTIAL_VBM_MAX;
}
memcpy(vbm->tim.pvb_field, bitmap, bitmap_len);
vbm->tim.identity = identity;
vbm->tim.length = bitmap_len + 3;
vbm->len = cpu_to_le16(bitmap_len + 5);
ret = wl1251_cmd_send(wl, CMD_VBM, vbm, sizeof(*vbm));
if (ret < 0) {
wl1251_error("VBM command failed");
goto out;
}
out:
kfree(vbm);
return ret;
}
int wl1251_cmd_data_path_rx(struct wl1251 *wl, u8 channel, bool enable)
{
struct cmd_enabledisable_path *cmd;
int ret;
u16 cmd_rx;
wl1251_debug(DEBUG_CMD, "cmd data path");
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd) {
ret = -ENOMEM;
goto out;
}
cmd->channel = channel;
if (enable)
cmd_rx = CMD_ENABLE_RX;
else
cmd_rx = CMD_DISABLE_RX;
ret = wl1251_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd));
if (ret < 0) {
wl1251_error("rx %s cmd for channel %d failed",
enable ? "start" : "stop", channel);
goto out;
}
wl1251_debug(DEBUG_BOOT, "rx %s cmd channel %d",
enable ? "start" : "stop", channel);
out:
kfree(cmd);
return ret;
}
int wl1251_cmd_data_path_tx(struct wl1251 *wl, u8 channel, bool enable)
{
struct cmd_enabledisable_path *cmd;
int ret;
u16 cmd_tx;
wl1251_debug(DEBUG_CMD, "cmd data path");
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd)
return -ENOMEM;
cmd->channel = channel;
if (enable)
cmd_tx = CMD_ENABLE_TX;
else
cmd_tx = CMD_DISABLE_TX;
ret = wl1251_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd));
if (ret < 0)
wl1251_error("tx %s cmd for channel %d failed",
enable ? "start" : "stop", channel);
else
wl1251_debug(DEBUG_BOOT, "tx %s cmd channel %d",
enable ? "start" : "stop", channel);
kfree(cmd);
return ret;
}
int wl1251_cmd_join(struct wl1251 *wl, u8 bss_type, u8 channel,
u16 beacon_interval, u8 dtim_interval)
{
struct cmd_join *join;
int ret, i;
u8 *bssid;
join = kzalloc(sizeof(*join), GFP_KERNEL);
if (!join) {
ret = -ENOMEM;
goto out;
}
wl1251_debug(DEBUG_CMD, "cmd join%s ch %d %d/%d",
bss_type == BSS_TYPE_IBSS ? " ibss" : "",
channel, beacon_interval, dtim_interval);
/* Reverse order BSSID */
bssid = (u8 *) &join->bssid_lsb;
for (i = 0; i < ETH_ALEN; i++)
bssid[i] = wl->bssid[ETH_ALEN - i - 1];
join->rx_config_options = wl->rx_config;
join->rx_filter_options = wl->rx_filter;
join->basic_rate_set = RATE_MASK_1MBPS | RATE_MASK_2MBPS |
RATE_MASK_5_5MBPS | RATE_MASK_11MBPS;
join->beacon_interval = beacon_interval;
join->dtim_interval = dtim_interval;
join->bss_type = bss_type;
join->channel = channel;
join->ctrl = JOIN_CMD_CTRL_TX_FLUSH;
ret = wl1251_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join));
if (ret < 0) {
wl1251_error("failed to initiate cmd join");
goto out;
}
out:
kfree(join);
return ret;
}
int wl1251_cmd_ps_mode(struct wl1251 *wl, u8 ps_mode)
{
struct wl1251_cmd_ps_params *ps_params = NULL;
int ret = 0;
wl1251_debug(DEBUG_CMD, "cmd set ps mode");
ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
if (!ps_params) {
ret = -ENOMEM;
goto out;
}
ps_params->ps_mode = ps_mode;
ps_params->send_null_data = 1;
ps_params->retries = 5;
ps_params->hang_over_period = 128;
ps_params->null_data_rate = 1; /* 1 Mbps */
ret = wl1251_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
sizeof(*ps_params));
if (ret < 0) {
wl1251_error("cmd set_ps_mode failed");
goto out;
}
out:
kfree(ps_params);
return ret;
}
int wl1251_cmd_read_memory(struct wl1251 *wl, u32 addr, void *answer,
size_t len)
{
struct cmd_read_write_memory *cmd;
int ret = 0;
wl1251_debug(DEBUG_CMD, "cmd read memory");
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd) {
ret = -ENOMEM;
goto out;
}
WARN_ON(len > MAX_READ_SIZE);
len = min_t(size_t, len, MAX_READ_SIZE);
cmd->addr = addr;
cmd->size = len;
ret = wl1251_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd));
if (ret < 0) {
wl1251_error("read memory command failed: %d", ret);
goto out;
}
/* the read command got in, we can now read the answer */
wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd));
if (cmd->header.status != CMD_STATUS_SUCCESS)
wl1251_error("error in read command result: %d",
cmd->header.status);
memcpy(answer, cmd->value, len);
out:
kfree(cmd);
return ret;
}
int wl1251_cmd_template_set(struct wl1251 *wl, u16 cmd_id,
void *buf, size_t buf_len)
{
struct wl1251_cmd_packet_template *cmd;
size_t cmd_len;
int ret = 0;
wl1251_debug(DEBUG_CMD, "cmd template %d", cmd_id);
WARN_ON(buf_len > WL1251_MAX_TEMPLATE_SIZE);
buf_len = min_t(size_t, buf_len, WL1251_MAX_TEMPLATE_SIZE);
cmd_len = ALIGN(sizeof(*cmd) + buf_len, 4);
cmd = kzalloc(cmd_len, GFP_KERNEL);
if (!cmd) {
ret = -ENOMEM;
goto out;
}
cmd->size = cpu_to_le16(buf_len);
if (buf)
memcpy(cmd->data, buf, buf_len);
ret = wl1251_cmd_send(wl, cmd_id, cmd, cmd_len);
if (ret < 0) {
wl1251_warning("cmd set_template failed: %d", ret);
goto out;
}
out:
kfree(cmd);
return ret;
}
int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len,
struct ieee80211_channel *channels[],
unsigned int n_channels, unsigned int n_probes)
{
struct wl1251_cmd_scan *cmd;
int i, ret = 0;
wl1251_debug(DEBUG_CMD, "cmd scan channels %d", n_channels);
WARN_ON(n_channels > SCAN_MAX_NUM_OF_CHANNELS);
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd)
return -ENOMEM;
cmd->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
cmd->params.rx_filter_options = cpu_to_le32(CFG_RX_PRSP_EN |
CFG_RX_MGMT_EN |
CFG_RX_BCN_EN);
cmd->params.scan_options = 0;
/*
* Use high priority scan when not associated to prevent fw issue
* causing never-ending scans (sometimes 20+ minutes).
* Note: This bug may be caused by the fw's DTIM handling.
*/
if (is_zero_ether_addr(wl->bssid))
cmd->params.scan_options |= WL1251_SCAN_OPT_PRIORITY_HIGH;
cmd->params.num_channels = n_channels;
cmd->params.num_probe_requests = n_probes;
cmd->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
cmd->params.tid_trigger = 0;
for (i = 0; i < n_channels; i++) {
cmd->channels[i].min_duration =
cpu_to_le32(WL1251_SCAN_MIN_DURATION);
cmd->channels[i].max_duration =
cpu_to_le32(WL1251_SCAN_MAX_DURATION);
memset(&cmd->channels[i].bssid_lsb, 0xff, 4);
memset(&cmd->channels[i].bssid_msb, 0xff, 2);
cmd->channels[i].early_termination = 0;
cmd->channels[i].tx_power_att = 0;
cmd->channels[i].channel = channels[i]->hw_value;
}
cmd->params.ssid_len = ssid_len;
if (ssid)
memcpy(cmd->params.ssid, ssid, ssid_len);
ret = wl1251_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd));
if (ret < 0) {
wl1251_error("cmd scan failed: %d", ret);
goto out;
}
wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd));
if (cmd->header.status != CMD_STATUS_SUCCESS) {
wl1251_error("cmd scan status wasn't success: %d",
cmd->header.status);
ret = -EIO;
goto out;
}
out:
kfree(cmd);
return ret;
}
int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout)
{
struct wl1251_cmd_trigger_scan_to *cmd;
int ret;
wl1251_debug(DEBUG_CMD, "cmd trigger scan to");
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd)
return -ENOMEM;
cmd->timeout = timeout;
ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, cmd, sizeof(*cmd));
if (ret < 0) {
wl1251_error("cmd trigger scan to failed: %d", ret);
goto out;
}
out:
kfree(cmd);
return ret;
}