static ssize_t char_write(struct file* file, const char __user *buf,
size_t count, loff_t *ppos)
{
ssize_t num_wr;
printk( KERN_INFO "char_test, called char_write");
memset( payload, 0, SIZE);
if( count > (SIZE-1) )
num_wr = simple_write_to_buffer(payload, SIZE-1, ppos, buf, count);
else
num_wr = simple_write_to_buffer(payload, strlen(buf), ppos, buf, count);
return num_wr;
}
static ssize_t snapshot_write(struct file *filp, const char __user *buf,
size_t count, loff_t *offp)
{
struct snapshot_data *data;
ssize_t res;
loff_t pg_offp = *offp & ~PAGE_MASK;
mutex_lock(&pm_mutex);
data = filp->private_data;
if (!pg_offp) {
res = snapshot_write_next(&data->handle);
if (res <= 0)
goto unlock;
} else {
res = PAGE_SIZE - pg_offp;
}
res = simple_write_to_buffer(data_of(data->handle), res, &pg_offp,
buf, count);
if (res > 0)
*offp += res;
unlock:
mutex_unlock(&pm_mutex);
return res;
}
static ssize_t xgbe_common_write(const char __user *buffer, size_t count,
loff_t *ppos, unsigned int *value)
{
char workarea[32];
ssize_t len;
int ret;
if (*ppos != 0)
return -EINVAL;
if (count >= sizeof(workarea))
return -ENOSPC;
len = simple_write_to_buffer(workarea, sizeof(workarea) - 1, ppos,
buffer, count);
if (len < 0)
return len;
workarea[len] = '\0';
ret = kstrtouint(workarea, 16, value);
if (ret)
return -EIO;
return len;
}
static ssize_t data_write(struct file *file, const char __user *data, size_t count, loff_t *ppos)
{
ssize_t size;
struct regulator_dev *rdev = file->private_data;
struct s2mps13_info *info = rdev_get_drvdata(rdev);
int reg_id = rdev_get_id(rdev);
char buffer[9];
size = simple_write_to_buffer(buffer, ARRAY_SIZE(buffer), ppos, data, count);
if (size > 0) {
if (strncasecmp("OFF", buffer, sizeof("OFF") - 1) == 0) {
info->opmode[reg_id] = SEC_OPMODE_OFF << S2MPS13_ENABLE_SHIFT;
} else if (strncasecmp("SUSPEND", buffer, sizeof("SUSPEND") - 1) == 0) {
info->opmode[reg_id] = SEC_OPMODE_SUSPEND << S2MPS13_ENABLE_SHIFT;
} else if (strncasecmp("LOWPOWER", buffer, sizeof("LOWPOWER") - 1) == 0) {
info->opmode[reg_id] = SEC_OPMODE_LOWPOWER << S2MPS13_ENABLE_SHIFT;
} else if (strncasecmp("ON", buffer, sizeof("ON") - 1) == 0) {
info->opmode[reg_id] = SEC_OPMODE_ON << S2MPS13_ENABLE_SHIFT;
} else {
buffer[ARRAY_SIZE(buffer) - 1] = '\0';
pr_err("%s is not recognizable.\n", buffer);
}
}
s2m_enable(rdev);
pr_debug("%s: size=%zd\n", __func__, size);
return size;
}
static ssize_t data_write_normalmode(struct file *file, const char __user *data, size_t count, loff_t *ppos)
{
ssize_t size = 0;
char buffer[8];
int* gpio = file->private_data;
size = simple_write_to_buffer(buffer, ARRAY_SIZE(buffer), ppos, data, count);
if(size > 0) {
if(strncasecmp("ON",buffer,sizeof("ON")-1) == 0) {
if (gpio_request(*gpio, "LED_CONTROL")) {
pr_err("%s : GPIO_LED request port error\n", __func__);
} else {
gpio_direction_output(*gpio, 1);
gpio_free(*gpio);
}
} else if (strncasecmp("OFF",buffer,sizeof("OFF")-1) == 0) {
if (gpio_request(*gpio, "LED_CONTROL")) {
pr_err("%s : GPIO_LED request port error\n", __func__);
} else {
gpio_direction_output(*gpio, 0);
gpio_free(*gpio);
}
}
}
return size;
}
static ssize_t data_write_sleepmode(struct file *file, const char __user *data, size_t count, loff_t *ppos)
{
ssize_t size = 0;
char buffer[8];
int* gpio = file->private_data;
size = simple_write_to_buffer(buffer, ARRAY_SIZE(buffer), ppos, data, count);
printk("Led : because of sleep current, S5430 turn off LED\n");
if(size > 0) {
if(strncasecmp("ON",buffer,sizeof("ON")-1) == 0) {
if (gpio_request(*gpio, "LED_CONTROL")) {
pr_err("%s : GPIO_LED request port error\n", __func__);
} else {
gpio_free(*gpio);
}
} else if (strncasecmp("OFF",buffer,sizeof("OFF")-1) == 0) {
if (gpio_request(*gpio, "LED_CONTROL")) {
pr_err("%s : GPIO_LED request port error\n", __func__);
} else {
gpio_free(*gpio);
}
}
}
return size;
}
/* Write WMI command (w/o mbox header) to this file to send it
* WMI starts from wil6210_mbox_hdr_wmi header
*/
static ssize_t wil_write_file_wmi(struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
{
struct wil6210_priv *wil = file->private_data;
struct wil6210_vif *vif = ndev_to_vif(wil->main_ndev);
struct wmi_cmd_hdr *wmi;
void *cmd;
int cmdlen = len - sizeof(struct wmi_cmd_hdr);
u16 cmdid;
int rc, rc1;
if (cmdlen < 0)
return -EINVAL;
wmi = kmalloc(len, GFP_KERNEL);
if (!wmi)
return -ENOMEM;
rc = simple_write_to_buffer(wmi, len, ppos, buf, len);
if (rc < 0) {
kfree(wmi);
return rc;
}
cmd = (cmdlen > 0) ? &wmi[1] : NULL;
cmdid = le16_to_cpu(wmi->command_id);
rc1 = wmi_send(wil, cmdid, vif->mid, cmd, cmdlen);
kfree(wmi);
wil_info(wil, "0x%04x[%d] -> %d\n", cmdid, cmdlen, rc1);
return rc;
}
static ssize_t hifi_debug_level_store(struct file *file, const char __user *buf,
size_t size, loff_t *data)
{
ssize_t ret = 0;
char level_str[MAX_LEVEL_STR_LEN] = {0};
loff_t pos = 0;
if (NULL == buf) {
loge("Input param buf is invalid\n");
return -EINVAL;
}
ret = simple_write_to_buffer(level_str, MAX_LEVEL_STR_LEN - 1 , &pos, buf, size);
if (ret != size) {
loge("Input param buf read error, return value: %zd\n", ret);
return -EINVAL;
}
if (!strchr("diwe", level_str[0])) {
loge("Input param buf is error(valid: d,i,w,e): %s.\n", level_str);
return -EINVAL;
}
if (level_str[1] != '\n') {
loge("Input param buf is error, last char is not \\n .\n");
return -EINVAL;
}
g_om_data.debug_level = hifi_get_debug_level_num(level_str[0]);
return size;
}
static ssize_t upgrade_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct partition_package *package;
int err;
size_t size;
//int len;
package = kzalloc(count, GFP_KERNEL);
if (!package) {
err = -ENOMEM;
part_err("upgrade_proc_write: fail to malloc package\n");
goto fail_malloc;
}
size = simple_write_to_buffer(package, sizeof(*package), ppos, buf, count);
if (size < 0) {
err = size;
part_err("upgrade_proc_write: fail to receive data(%zu)\n", size);
goto out;
}
err = upgrade_handler(package, size);
out:
kfree(package);
fail_malloc:
if (err)
return err;
else
return count;
}
/* Write WMI command (w/o mbox header) to this file to send it
* WMI starts from wil6210_mbox_hdr_wmi header
*/
static ssize_t wil_write_file_wmi(struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
{
struct wil6210_priv *wil = file->private_data;
struct wil6210_mbox_hdr_wmi *wmi;
void *cmd;
int cmdlen = len - sizeof(struct wil6210_mbox_hdr_wmi);
u16 cmdid;
int rc, rc1;
if (cmdlen <= 0)
return -EINVAL;
wmi = kmalloc(len, GFP_KERNEL);
if (!wmi)
return -ENOMEM;
rc = simple_write_to_buffer(wmi, len, ppos, buf, len);
if (rc < 0)
return rc;
cmd = &wmi[1];
cmdid = le16_to_cpu(wmi->id);
rc1 = wmi_send(wil, cmdid, cmd, cmdlen);
kfree(wmi);
wil_info(wil, "%s(0x%04x[%d]) -> %d\n", __func__, cmdid, cmdlen, rc1);
return rc;
}
static ssize_t ath10k_write_htt_max_amsdu_ampdu(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
int res;
char buf[64];
unsigned int amsdu, ampdu;
simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
/* make sure that buf is null terminated */
buf[sizeof(buf) - 1] = 0;
res = sscanf(buf, "%u %u", &amsdu, &du);
if (res != 2)
return -EINVAL;
mutex_lock(&ar->conf_mutex);
res = ath10k_htt_h2t_aggr_cfg_msg(&ar->htt, ampdu, amsdu);
if (res)
goto out;
res = count;
ar->debug.htt_max_amsdu = amsdu;
ar->debug.htt_max_ampdu = ampdu;
out:
mutex_unlock(&ar->conf_mutex);
return res;
}
static ssize_t
fop_write(struct file *file, const char __user *user_buf,
size_t count,
loff_t *ppos)
{
int len;
TfwDebugfsIoState *state = file->private_data;
if (!state->is_input) {
TFW_ERR("Can't write to this debugfs file: "
"it was open()'ed only for reading\n");
return -EPERM;
}
/* copy data from user-space */
len = simple_write_to_buffer(state->buf, (state->buf_size - 1),
ppos,
user_buf, count);
if (len > 0) {
state->len += len;
state->buf[state->len] = '\0';
}
return len;
}
static ssize_t
xenvif_write_io_ring(struct file *filp, const char __user *buf, size_t count,
loff_t *ppos)
{
struct xenvif_queue *queue =
((struct seq_file *)filp->private_data)->private;
int len;
char write[BUFFER_SIZE];
/* don't allow partial writes and check the length */
if (*ppos != 0)
return 0;
if (count >= sizeof(write))
return -ENOSPC;
len = simple_write_to_buffer(write,
sizeof(write) - 1,
ppos,
buf,
count);
if (len < 0)
return len;
write[len] = '\0';
if (!strncmp(write, XENVIF_KICK_STR, sizeof(XENVIF_KICK_STR) - 1))
xenvif_interrupt(0, (void *)queue);
else {
pr_warn("Unknown command to io_ring_q%d. Available: kick\n",
queue->id);
count = -EINVAL;
}
return count;
}
static ssize_t baseline_debugfs_write(struct file *filp,
const char __user *buf, size_t count, loff_t *ppos)
{
struct cyttsp5_device_access_debugfs_data *data = filp->private_data;
struct cyttsp5_device_access_data *dad = data->dad;
ssize_t length;
int rc = 0;
rc = simple_write_to_buffer(data->pr_buf, sizeof(data->pr_buf), ppos,
buf, count);
if (rc < 0)
return rc;
count = rc;
mutex_lock(&dad->sysfs_lock);
length = cyttsp5_ic_parse_input(dad->dev, buf, count, dad->ic_buf,
CY_MAX_PRBUF_SIZE);
if (length != 1) {
dev_err(dad->dev, "%s: Malformed input\n", __func__);
rc = -EINVAL;
goto exit_unlock;
}
dad->baseline_sensing_mode = dad->ic_buf[0];
exit_unlock:
mutex_unlock(&dad->sysfs_lock);
if (rc)
return rc;
return count;
}
static ssize_t tee_write_file_settings_tz(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct device *dev = file->private_data;
char *buf;
char *str;
int val;
buf = devm_kzalloc(dev, count, GFP_KERNEL);
if (!buf) {
dev_err(dev, "can't allocate work buffer\n");
return count;
}
val = simple_write_to_buffer(buf, count, ppos, user_buf, count);
if (!val) {
dev_err(dev, "no user data\n");
goto out;
}
str = strstr(buf, STR_DUMP_ALLOCATOR);
if (str)
tee_shm_pool_dump(dev, TZop.Allocator, true);
str = strstr(buf, STR_CMD_HIST);
if (str)
tee_debug_dump_cmd_hist(dev, NULL, 0);
out:
devm_kfree(dev, buf);
return count;
}
static ssize_t wil_write_file_ssid(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct wil6210_priv *wil = file->private_data;
struct wireless_dev *wdev = wil_to_wdev(wil);
struct net_device *ndev = wil_to_ndev(wil);
if (*ppos != 0) {
wil_err(wil, "Unable to set SSID substring from [%d]\n",
(int)*ppos);
return -EINVAL;
}
if (count > sizeof(wdev->ssid)) {
wil_err(wil, "SSID too long, len = %d\n", (int)count);
return -EINVAL;
}
if (netif_running(ndev)) {
wil_err(wil, "Unable to change SSID on running interface\n");
return -EINVAL;
}
wdev->ssid_len = count;
return simple_write_to_buffer(wdev->ssid, wdev->ssid_len, ppos,
buf, count);
}
/* write file operation */
static ssize_t mywriter(struct file *fp, const char __user *user_buffer,
size_t count, loff_t *position)
{
if(count > len )
return -EINVAL;
printk("writing\n");
return simple_write_to_buffer(ker_buf, len, position, user_buffer, count);
}
static ssize_t tool_peer_mw_write(struct file *filep, const char __user *ubuf,
size_t size, loff_t *offp)
{
struct tool_mw *mw = filep->private_data;
if (!mw->peer)
return -ENXIO;
return simple_write_to_buffer(mw->peer, mw->size, offp, ubuf, size);
}
static ssize_t
configfs_write_bin_file(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct configfs_buffer *buffer = file->private_data;
struct dentry *dentry = file->f_path.dentry;
struct configfs_bin_attribute *bin_attr = to_bin_attr(dentry);
void *tbuf = NULL;
ssize_t len;
mutex_lock(&buffer->mutex);
/* we don't support switching read/write modes */
if (buffer->read_in_progress) {
len = -ETXTBSY;
goto out;
}
buffer->write_in_progress = 1;
/* buffer grows? */
if (*ppos + count > buffer->bin_buffer_size) {
if (bin_attr->cb_max_size &&
*ppos + count > bin_attr->cb_max_size) {
len = -EFBIG;
}
tbuf = vmalloc(*ppos + count);
if (tbuf == NULL) {
len = -ENOMEM;
goto out;
}
/* copy old contents */
if (buffer->bin_buffer) {
memcpy(tbuf, buffer->bin_buffer,
buffer->bin_buffer_size);
vfree(buffer->bin_buffer);
}
/* clear the new area */
memset(tbuf + buffer->bin_buffer_size, 0,
*ppos + count - buffer->bin_buffer_size);
buffer->bin_buffer = tbuf;
buffer->bin_buffer_size = *ppos + count;
}
len = simple_write_to_buffer(buffer->bin_buffer,
buffer->bin_buffer_size, ppos, buf, count);
if (len > 0)
*ppos += len;
out:
mutex_unlock(&buffer->mutex);
return len;
}
/* block ack control, write:
* - "add <ringid> <agg_size> <timeout>" to trigger ADDBA
* - "del_tx <ringid> <reason>" to trigger DELBA for Tx side
* - "del_rx <CID> <TID> <reason>" to trigger DELBA for Rx side
*/
static ssize_t wil_write_back(struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
{
struct wil6210_priv *wil = file->private_data;
int rc;
char *kbuf = kmalloc(len + 1, GFP_KERNEL);
char cmd[9];
int p1, p2, p3;
if (!kbuf)
return -ENOMEM;
rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
if (rc != len) {
kfree(kbuf);
return rc >= 0 ? -EIO : rc;
}
kbuf[len] = '\0';
rc = sscanf(kbuf, "%8s %d %d %d", cmd, &p1, &p2, &p3);
kfree(kbuf);
if (rc < 0)
return rc;
if (rc < 2)
return -EINVAL;
if (0 == strcmp(cmd, "add")) {
if (rc < 3) {
wil_err(wil, "BACK: add require at least 2 params\n");
return -EINVAL;
}
if (rc < 4)
p3 = 0;
wmi_addba(wil, p1, p2, p3);
} else if (0 == strcmp(cmd, "del_tx")) {
if (rc < 3)
p2 = WLAN_REASON_QSTA_LEAVE_QBSS;
wmi_delba_tx(wil, p1, p2);
} else if (0 == strcmp(cmd, "del_rx")) {
if (rc < 3) {
wil_err(wil,
"BACK: del_rx require at least 2 params\n");
return -EINVAL;
}
if (rc < 4)
p3 = WLAN_REASON_QSTA_LEAVE_QBSS;
wmi_delba_rx(wil, mk_cidxtid(p1, p2), p3);
} else {
wil_err(wil, "BACK: Unrecognized command \"%s\"\n", cmd);
return -EINVAL;
}
return len;
}
static ssize_t ufs_qcom_dbg_testbus_cfg_write(struct file *file,
const char __user *ubuf, size_t cnt,
loff_t *ppos)
{
struct ufs_qcom_host *host = file->f_mapping->host->i_private;
char configuration[TESTBUS_CFG_BUFF_LINE_SIZE] = {0};
loff_t buff_pos = 0;
char *comma;
int ret = 0;
int major;
int minor;
cnt = simple_write_to_buffer(configuration, TESTBUS_CFG_BUFF_LINE_SIZE,
&buff_pos, ubuf, cnt);
if (cnt < 0) {
dev_err(host->hba->dev, "%s: failed to read user data\n",
__func__);
goto out;
}
comma = strnchr(configuration, TESTBUS_CFG_BUFF_LINE_SIZE, ',');
if (!comma || comma == configuration) {
dev_err(host->hba->dev,
"%s: error in configuration of testbus\n", __func__);
ret = -EINVAL;
goto out;
}
if (sscanf(configuration, "%i,%i", &major, &minor) != 2) {
dev_err(host->hba->dev,
"%s: couldn't parse input to 2 numeric values\n",
__func__);
ret = -EINVAL;
goto out;
}
host->testbus.select_major = (u8)major;
host->testbus.select_minor = (u8)minor;
/*
* Sanity check of the {major, minor} tuple is done in the
* config function
*/
ret = ufs_qcom_testbus_config(host);
if (!ret)
dev_dbg(host->hba->dev,
"%s: New configuration: major=%d, minor=%d\n",
__func__, host->testbus.select_major,
host->testbus.select_minor);
out:
return ret ? ret : cnt;
}
/**
* ixgbe_dbg_reg_ops_write - write into reg_ops datum
* @filp: the opened file
* @buffer: where to find the user's data
* @count: the length of the user's data
* @ppos: file position offset
**/
static ssize_t ixgbe_dbg_reg_ops_write(struct file *filp,
const char __user *buffer,
size_t count, loff_t *ppos)
{
struct ixgbe_adapter *adapter = filp->private_data;
int len;
/* don't allow partial writes */
if (*ppos != 0)
return 0;
if (count >= sizeof(ixgbe_dbg_reg_ops_buf))
return -ENOSPC;
len = simple_write_to_buffer(ixgbe_dbg_reg_ops_buf,
sizeof(ixgbe_dbg_reg_ops_buf)-1,
ppos,
buffer,
count);
if (len < 0)
return len;
ixgbe_dbg_reg_ops_buf[len] = '\0';
if (strncmp(ixgbe_dbg_reg_ops_buf, "write", 5) == 0) {
u32 reg, value;
int cnt;
cnt = sscanf(&ixgbe_dbg_reg_ops_buf[5], "%x %x", ®, &value);
if (cnt == 2) {
IXGBE_WRITE_REG(&adapter->hw, reg, value);
value = IXGBE_READ_REG(&adapter->hw, reg);
e_dev_info("write: 0x%08x = 0x%08x\n", reg, value);
} else {
e_dev_info("write <reg> <value>\n");
}
} else if (strncmp(ixgbe_dbg_reg_ops_buf, "read", 4) == 0) {
u32 reg, value;
int cnt;
cnt = sscanf(&ixgbe_dbg_reg_ops_buf[4], "%x", ®);
if (cnt == 1) {
value = IXGBE_READ_REG(&adapter->hw, reg);
e_dev_info("read 0x%08x = 0x%08x\n", reg, value);
} else {
e_dev_info("read <reg>\n");
}
} else {
e_dev_info("Unknown command %s\n", ixgbe_dbg_reg_ops_buf);
e_dev_info("Available commands:\n");
e_dev_info(" read <reg>\n");
e_dev_info(" write <reg> <value>\n");
}
return count;
}
static ssize_t my_write(struct file *filp, const char __user *buf, size_t count,
loff_t *off)
{
ssize_t ret;
mutex_lock(&my_lock);
ret = simple_write_to_buffer(str, sizeof str - 1, off, buf, count);
if (ret >= 0)
str[sizeof str - 1] = 0;
mutex_unlock(&my_lock);
return ret;
}
static ssize_t ec_debugfs_cmd_write(struct file *file, const char __user *buf,
size_t size, loff_t *ppos)
{
int i, m;
unsigned char ec_cmd[EC_MAX_CMD_ARGS];
unsigned int ec_cmd_int[EC_MAX_CMD_ARGS];
char cmdbuf[64];
int ec_cmd_bytes;
mutex_lock(&ec_debugfs_cmd_lock);
size = simple_write_to_buffer(cmdbuf, sizeof(cmdbuf), ppos, buf, size);
m = sscanf(cmdbuf, "%x:%u %x %x %x %x %x", &ec_cmd_int[0],
&ec_debugfs_resp_bytes,
&ec_cmd_int[1], &ec_cmd_int[2], &ec_cmd_int[3],
&ec_cmd_int[4], &ec_cmd_int[5]);
if (m < 2 || ec_debugfs_resp_bytes > EC_MAX_CMD_REPLY) {
/* reset to prevent overflow on read */
ec_debugfs_resp_bytes = 0;
printk(KERN_DEBUG "olpc-ec: bad ec cmd: "
"cmd:response-count [arg1 [arg2 ...]]\n");
size = -EINVAL;
goto out;
}
/* convert scanf'd ints to char */
ec_cmd_bytes = m - 2;
for (i = 0; i <= ec_cmd_bytes; i++)
ec_cmd[i] = ec_cmd_int[i];
printk(KERN_DEBUG "olpc-ec: debugfs cmd 0x%02x with %d args "
"%02x %02x %02x %02x %02x, want %d returns\n",
ec_cmd[0], ec_cmd_bytes, ec_cmd[1], ec_cmd[2], ec_cmd[3],
ec_cmd[4], ec_cmd[5], ec_debugfs_resp_bytes);
olpc_ec_cmd(ec_cmd[0], (ec_cmd_bytes == 0) ? NULL : &ec_cmd[1],
ec_cmd_bytes, ec_debugfs_resp, ec_debugfs_resp_bytes);
printk(KERN_DEBUG "olpc-ec: response "
"%02x %02x %02x %02x %02x %02x %02x %02x (%d bytes expected)\n",
ec_debugfs_resp[0], ec_debugfs_resp[1], ec_debugfs_resp[2],
ec_debugfs_resp[3], ec_debugfs_resp[4], ec_debugfs_resp[5],
ec_debugfs_resp[6], ec_debugfs_resp[7], ec_debugfs_resp_bytes);
out:
mutex_unlock(&ec_debugfs_cmd_lock);
return size;
}
/* Simulate firmware crash:
* 'soft': Call wmi command causing firmware hang. This firmware hang is
* recoverable by warm firmware reset.
* 'hard': Force firmware crash by setting any vdev parameter for not allowed
* vdev id. This is hard firmware crash because it is recoverable only by cold
* firmware reset.
*/
static ssize_t ath10k_write_simulate_fw_crash(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
char buf[32];
int ret;
mutex_lock(&ar->conf_mutex);
simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
/* make sure that buf is null terminated */
buf[sizeof(buf) - 1] = 0;
if (ar->state != ATH10K_STATE_ON &&
ar->state != ATH10K_STATE_RESTARTED) {
ret = -ENETDOWN;
goto exit;
}
/* drop the possible '\n' from the end */
if (buf[count - 1] == '\n') {
buf[count - 1] = 0;
count--;
}
if (!strcmp(buf, "soft")) {
ath10k_info("simulating soft firmware crash\n");
ret = ath10k_wmi_force_fw_hang(ar, WMI_FORCE_FW_HANG_ASSERT, 0);
} else if (!strcmp(buf, "hard")) {
ath10k_info("simulating hard firmware crash\n");
ret = ath10k_wmi_vdev_set_param(ar, TARGET_NUM_VDEVS + 1,
ar->wmi.vdev_param->rts_threshold, 0);
} else {
ret = -EINVAL;
goto exit;
}
if (ret) {
ath10k_warn("failed to simulate firmware crash: %d\n", ret);
goto exit;
}
ret = count;
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
/* pmc control, write:
* - "alloc <num descriptors> <descriptor_size>" to allocate PMC
* - "free" to release memory allocated for PMC
*/
static ssize_t wil_write_pmccfg(struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
{
struct wil6210_priv *wil = file->private_data;
int rc;
char *kbuf = kmalloc(len + 1, GFP_KERNEL);
char cmd[9];
int num_descs, desc_size;
if (!kbuf)
return -ENOMEM;
rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
if (rc != len) {
kfree(kbuf);
return rc >= 0 ? -EIO : rc;
}
kbuf[len] = '\0';
rc = sscanf(kbuf, "%8s %d %d", cmd, &num_descs, &desc_size);
kfree(kbuf);
if (rc < 0)
return rc;
if (rc < 1) {
wil_err(wil, "pmccfg: no params given\n");
return -EINVAL;
}
if (0 == strcmp(cmd, "alloc")) {
if (rc != 3) {
wil_err(wil, "pmccfg: alloc requires 2 params\n");
return -EINVAL;
}
wil_pmc_alloc(wil, num_descs, desc_size);
} else if (0 == strcmp(cmd, "free")) {
if (rc != 1) {
wil_err(wil, "pmccfg: free does not have any params\n");
return -EINVAL;
}
wil_pmc_free(wil, true);
} else {
wil_err(wil, "pmccfg: Unrecognized command \"%s\"\n", cmd);
return -EINVAL;
}
return len;
}
static ssize_t debug_id_writer(struct file *fp, const char __user *buf,
size_t len, loff_t *ppos)
{
char tmp[BUFFER_SIZE];
int size = strlen(EUDYPTULA_ID);
if (len >= BUFFER_SIZE)
return -EINVAL;
if (simple_write_to_buffer(tmp, size, ppos, buf, len) < size)
return -EINVAL;
tmp[size] = '\0';
return strncmp(tmp, EUDYPTULA_ID, size) ? -EINVAL : size;
}
static ssize_t debug_foo_writer(struct file *fp, const char __user *buf,
size_t len, loff_t *ppos)
{
int ret;
mutex_lock(&debug_foo_mutex);
if (len >= BUFFER_SIZE)
return -EINVAL;
ret = simple_write_to_buffer(foo_value, PAGE_SIZE - 1, ppos, buf, len);
foo_value[ret] = '\0';
mutex_unlock(&debug_foo_mutex);
return ret;
}
static ssize_t my_write(struct file *filp, const char __user *buf, size_t count,
loff_t *off)
{
ssize_t ret;
mutex_lock(&my_lock);
ret = simple_write_to_buffer(str, sizeof(str) - 1, off, buf, count);
if (!ret)
str[sizeof(str) - 1] = 0;
mutex_unlock(&my_lock);
atomic_inc(&counter);
wake_up(&my_wait);
return ret;
}
static ssize_t pixter_dbgfs_write(struct file *file, const char __user *buf, size_t size, loff_t *ppos)
{
struct pixter_dbgfs_data *data = file->f_inode->i_private;
struct pixter_device *dev = data->dev;
u32 *val = (u32*) data->ptr;
char str[16] = {0};
ssize_t ret;
ret = simple_write_to_buffer(str, 16, ppos, buf, size);
sscanf(str, "%d", val);
if (val == &dev->dbg_timing.timing_ovrd && *val == 0)
pixter_config_tx(&dev->sd);
return ret;
}