@@ -410,3 +410,85 @@ out:
kfree(cmd);
return ret;
}
+
+int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len,
+ unsigned int n_channels, unsigned int n_probes)
+{
+ struct wl1251_cmd_scan *cmd;
+ int i, ret = 0;
+
+ wl1251_debug(DEBUG_CMD, "cmd scan");
+
+ 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;
+ 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 = i + 1;
+ }
+
+ 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_SCAN, cmd, sizeof(*cmd));
+ if (ret < 0) {
+ wl1251_error("cmd trigger scan to failed: %d", ret);
+ goto out;
+ }
+
+out:
+ kfree(cmd);
+ return ret;
+}
@@ -43,6 +43,9 @@ int wl1251_cmd_read_memory(struct wl1251 *wl, u32 addr, void *answer,
size_t len);
int wl1251_cmd_template_set(struct wl1251 *wl, u16 cmd_id,
void *buf, size_t buf_len);
+int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len,
+ unsigned int n_channels, unsigned int n_probes);
+int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout);
/* unit ms */
#define WL1251_COMMAND_TIMEOUT 2000
@@ -163,8 +166,10 @@ struct cmd_read_write_memory {
#define CMDMBOX_HEADER_LEN 4
#define CMDMBOX_INFO_ELEM_HEADER_LEN 4
+#define WL1251_SCAN_MIN_DURATION 30000
+#define WL1251_SCAN_MAX_DURATION 60000
-struct basic_scan_parameters {
+struct wl1251_scan_parameters {
u32 rx_config_options;
u32 rx_filter_options;
@@ -189,11 +194,11 @@ struct basic_scan_parameters {
u8 tid_trigger;
u8 ssid_len;
- u32 ssid[8];
+ u8 ssid[32];
} __attribute__ ((packed));
-struct basic_scan_channel_parameters {
+struct wl1251_scan_ch_parameters {
u32 min_duration; /* in TU */
u32 max_duration; /* in TU */
u32 bssid_lsb;
@@ -213,11 +218,11 @@ struct basic_scan_channel_parameters {
/* SCAN parameters */
#define SCAN_MAX_NUM_OF_CHANNELS 16
-struct cmd_scan {
+struct wl1251_cmd_scan {
struct wl1251_cmd_header header;
- struct basic_scan_parameters params;
- struct basic_scan_channel_parameters channels[SCAN_MAX_NUM_OF_CHANNELS];
+ struct wl1251_scan_parameters params;
+ struct wl1251_scan_ch_parameters channels[SCAN_MAX_NUM_OF_CHANNELS];
} __attribute__ ((packed));
enum {
@@ -903,111 +903,13 @@ static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
size);
}
-static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
- u8 active_scan, u8 high_prio, u8 num_channels,
- u8 probe_requests)
-{
- struct wl1251_cmd_trigger_scan_to *trigger = NULL;
- struct cmd_scan *params = NULL;
- int i, ret;
- u16 scan_options = 0;
-
- if (wl->scanning)
- return -EINVAL;
-
- params = kzalloc(sizeof(*params), GFP_KERNEL);
- if (!params)
- return -ENOMEM;
-
- params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
- params->params.rx_filter_options =
- cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
-
- /* High priority scan */
- if (!active_scan)
- scan_options |= SCAN_PASSIVE;
- if (high_prio)
- scan_options |= SCAN_PRIORITY_HIGH;
- params->params.scan_options = scan_options;
-
- params->params.num_channels = num_channels;
- params->params.num_probe_requests = probe_requests;
- params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
- params->params.tid_trigger = 0;
-
- for (i = 0; i < num_channels; i++) {
- params->channels[i].min_duration = cpu_to_le32(30000);
- params->channels[i].max_duration = cpu_to_le32(60000);
- memset(¶ms->channels[i].bssid_lsb, 0xff, 4);
- memset(¶ms->channels[i].bssid_msb, 0xff, 2);
- params->channels[i].early_termination = 0;
- params->channels[i].tx_power_att = 0;
- params->channels[i].channel = i + 1;
- memset(params->channels[i].pad, 0, 3);
- }
-
- for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
- memset(¶ms->channels[i], 0,
- sizeof(struct basic_scan_channel_parameters));
-
- if (len && ssid) {
- params->params.ssid_len = len;
- memcpy(params->params.ssid, ssid, len);
- } else {
- params->params.ssid_len = 0;
- memset(params->params.ssid, 0, 32);
- }
-
- ret = wl1251_build_probe_req(wl, ssid, len);
- if (ret < 0) {
- wl1251_error("PROBE request template failed");
- goto out;
- }
-
- trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
- if (!trigger)
- goto out;
-
- trigger->timeout = 0;
-
- ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
- sizeof(*trigger));
- if (ret < 0) {
- wl1251_error("trigger scan to failed for hw scan");
- goto out;
- }
-
- wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
-
- wl->scanning = true;
-
- ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
- if (ret < 0)
- wl1251_error("SCAN failed");
-
- wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
-
- if (params->header.status != CMD_STATUS_SUCCESS) {
- wl1251_error("TEST command answer error: %d",
- params->header.status);
- wl->scanning = false;
- ret = -EIO;
- goto out;
- }
-
-out:
- kfree(params);
- return ret;
-
-}
-
static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
struct cfg80211_scan_request *req)
{
struct wl1251 *wl = hw->priv;
- int ret;
- u8 *ssid = NULL;
size_t ssid_len = 0;
+ u8 *ssid = NULL;
+ int ret;
wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
@@ -1018,12 +920,33 @@ static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
mutex_lock(&wl->mutex);
+ if (wl->scanning) {
+ wl1251_debug(DEBUG_SCAN, "scan already in progress");
+ ret = -EINVAL;
+ goto out;
+ }
+
ret = wl1251_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
- ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
+ ret = wl1251_build_probe_req(wl, ssid, ssid_len);
+ if (ret < 0)
+ wl1251_error("probe request template build failed");
+
+ ret = wl1251_cmd_trigger_scan_to(wl, 0);
+ if (ret < 0)
+ goto out_sleep;
+
+ wl->scanning = true;
+ ret = wl1251_cmd_scan(wl, ssid, ssid_len, 13, 3);
+ if (ret < 0) {
+ wl->scanning = false;
+ goto out_sleep;
+ }
+
+out_sleep:
wl1251_ps_elp_sleep(wl);
out: