wl1251: move to it's own directory

wl1271 driver is under heavy development but on the other hand the older
wl1251 driver is currently considered more as a legacy driver. To make it
easier to develop wl1271 features move wl1251 to it's own directory,
drivers/net/wireless/wl1251.

There are no functional changes, only moving of files. One regression
is that Kconfig won't be updated automatically and user needs to enable
wl1251 manually with an older config file.

Signed-off-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 496 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl1251/cmd.c b/drivers/net/wireless/wl1251/cmd.c
new file mode 100644
index 000000000000..0ade4bd617c0
--- /dev/null
+++ b/drivers/net/wireless/wl1251/cmd.c
@@ -0,0 +1,496 @@
+#include "cmd.h"
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/crc7.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: lenght 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(struct wl1251 *wl, u8 channel, bool enable)
+{
+	struct cmd_enabledisable_path *cmd;
+	int ret;
+	u16 cmd_rx, cmd_tx;
+
+	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;
+		cmd_tx = CMD_ENABLE_TX;
+	} else {
+		cmd_rx = CMD_DISABLE_RX;
+		cmd_tx = CMD_DISABLE_TX;
+	}
+
+	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);
+
+	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);
+		return ret;
+	}
+
+	wl1251_debug(DEBUG_BOOT, "tx %s cmd channel %d",
+		     enable ? "start" : "stop", channel);
+
+out:
+	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;
+
+	/*
+	 * FIXME: disable temporarily all filters because after commit
+	 * 9cef8737 "mac80211: fix managed mode BSSID handling" broke
+	 * association. The filter logic needs to be implemented properly
+	 * and once that is done, this hack can be removed.
+	 */
+	join->rx_config_options = 0;
+	join->rx_filter_options = WL1251_DEFAULT_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");
+
+	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 = 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;
+}