/*
* Execute a Radio Control Command
*
* Command data has to be in i1480->cmd_buf.
*
* @returns size of the reply data filled in i1480->evt_buf or < 0 errno
* code on error.
*/
ssize_t i1480_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size,
size_t reply_size)
{
ssize_t result;
struct uwb_rceb *reply = i1480->evt_buf;
struct uwb_rccb *cmd = i1480->cmd_buf;
u16 expected_event = reply->wEvent;
u8 expected_type = reply->bEventType;
u8 context;
init_completion(&i1480->evt_complete);
i1480->evt_result = -EINPROGRESS;
do {
get_random_bytes(&context, 1);
} while (context == 0x00 || context == 0xff);
cmd->bCommandContext = context;
result = i1480->cmd(i1480, cmd_name, cmd_size);
if (result < 0)
goto error;
/* wait for the callback to report a event was received */
result = wait_for_completion_interruptible_timeout(
&i1480->evt_complete, HZ);
if (result == 0) {
result = -ETIMEDOUT;
goto error;
}
if (result < 0)
goto error;
result = i1480->evt_result;
if (result < 0) {
dev_err(i1480->dev, "%s: command reply reception failed: %zd\n",
cmd_name, result);
goto error;
}
/*
* Firmware versions >= 1.4.12224 for IOGear GUWA100U generate a
* spurious notification after firmware is downloaded. So check whether
* the receibed RCEB is such notification before assuming that the
* command has failed.
*/
if (i1480_rceb_check(i1480, i1480->evt_buf, NULL,
0, 0xfd, 0x0022) == 0) {
/* Now wait for the actual RCEB for this command. */
result = i1480->wait_init_done(i1480);
if (result < 0)
goto error;
result = i1480->evt_result;
}
if (result != reply_size) {
dev_err(i1480->dev, "%s returned only %zu bytes, %zu expected\n",
cmd_name, result, reply_size);
result = -EINVAL;
goto error;
}
/* Verify we got the right event in response */
result = i1480_rceb_check(i1480, i1480->evt_buf, cmd_name, context,
expected_type, expected_event);
error:
return result;
}
ssize_t i1480_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size,
size_t reply_size)
{
ssize_t result;
struct uwb_rceb *reply = i1480->evt_buf;
struct uwb_rccb *cmd = i1480->cmd_buf;
u16 expected_event = reply->wEvent;
u8 expected_type = reply->bEventType;
u8 context;
init_completion(&i1480->evt_complete);
i1480->evt_result = -EINPROGRESS;
do {
get_random_bytes(&context, 1);
} while (context == 0x00 || context == 0xff);
cmd->bCommandContext = context;
result = i1480->cmd(i1480, cmd_name, cmd_size);
if (result < 0)
goto error;
result = wait_for_completion_interruptible_timeout(
&i1480->evt_complete, HZ);
if (result == 0) {
result = -ETIMEDOUT;
goto error;
}
if (result < 0)
goto error;
result = i1480->evt_result;
if (result < 0) {
dev_err(i1480->dev, "%s: command reply reception failed: %zd\n",
cmd_name, result);
goto error;
}
if (i1480_rceb_check(i1480, i1480->evt_buf, NULL,
0, 0xfd, 0x0022) == 0) {
result = i1480->wait_init_done(i1480);
if (result < 0)
goto error;
result = i1480->evt_result;
}
if (result != reply_size) {
dev_err(i1480->dev, "%s returned only %zu bytes, %zu expected\n",
cmd_name, result, reply_size);
result = -EINVAL;
goto error;
}
result = i1480_rceb_check(i1480, i1480->evt_buf, cmd_name, context,
expected_type, expected_event);
error:
return result;
}
/**
* Upload MAC firmware, wait for it to start
*
* @i1480: Device instance
* @fw_name: Name of the file that contains the firmware
*
* This has to be called after the pre fw has been uploaded (if
* there is any).
*/
int i1480_mac_fw_upload(struct i1480 *i1480)
{
int result = 0, deprecated_name = 0;
struct i1480_rceb *rcebe = (void *) i1480->evt_buf;
result = __mac_fw_upload(i1480, i1480->mac_fw_name, "MAC");
if (result == -ENOENT) {
result = __mac_fw_upload(i1480, i1480->mac_fw_name_deprecate,
"MAC");
deprecated_name = 1;
}
if (result < 0)
return result;
if (deprecated_name == 1)
dev_warn(i1480->dev,
"WARNING: firmware file name %s is deprecated, "
"please rename to %s\n",
i1480->mac_fw_name_deprecate, i1480->mac_fw_name);
result = i1480_fw_is_running_q(i1480);
if (result < 0)
goto error_fw_not_running;
result = i1480->rc_setup ? i1480->rc_setup(i1480) : 0;
if (result < 0) {
dev_err(i1480->dev, "Cannot setup after MAC fw upload: %d\n",
result);
goto error_setup;
}
result = i1480->wait_init_done(i1480); /* wait init'on */
if (result < 0) {
dev_err(i1480->dev, "MAC fw '%s': Initialization timed out "
"(%d)\n", i1480->mac_fw_name, result);
goto error_init_timeout;
}
/* verify we got the right initialization done event */
if (i1480->evt_result != sizeof(*rcebe)) {
dev_err(i1480->dev, "MAC fw '%s': initialization event returns "
"wrong size (%zu bytes vs %zu needed)\n",
i1480->mac_fw_name, i1480->evt_result, sizeof(*rcebe));
goto error_size;
}
result = -EIO;
if (i1480_rceb_check(i1480, &rcebe->rceb, NULL, 0, i1480_CET_VS1,
i1480_EVT_RM_INIT_DONE) < 0) {
dev_err(i1480->dev, "wrong initialization event 0x%02x/%04x/%02x "
"received; expected 0x%02x/%04x/00\n",
rcebe->rceb.bEventType, le16_to_cpu(rcebe->rceb.wEvent),
rcebe->rceb.bEventContext, i1480_CET_VS1,
i1480_EVT_RM_INIT_DONE);
goto error_init_timeout;
}
result = i1480_cmd_reset(i1480);
if (result < 0)
dev_err(i1480->dev, "MAC fw '%s': MBOA reset failed (%d)\n",
i1480->mac_fw_name, result);
error_fw_not_running:
error_init_timeout:
error_size:
error_setup:
return result;
}