staging: wfx: instantiate mac80211 data

Allocate a struct ieee80211_hw but do not yet register it.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20190919142527.31797-11-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wfx/Makefile

@@ -9,6 +9,7 @@ wfx-y := \
 	fwio.o \
 	hif_rx.o \
 	main.o \
+	sta.o \
 	debug.o
 wfx-$(CONFIG_SPI) += bus_spi.o
 wfx-$(subst m,y,$(CONFIG_MMC)) += bus_sdio.o

drivers/staging/wfx/debug.c

@@ -5,6 +5,18 @@
  * Copyright (c) 2017-2019, Silicon Laboratories, Inc.
  * Copyright (c) 2010, ST-Ericsson
  */
+#include <linux/debugfs.h>
+
+#include "wfx.h"
 
 #define CREATE_TRACE_POINTS
 #include "traces.h"
+
+int wfx_debug_init(struct wfx_dev *wdev)
+{
+	struct dentry *d;
+
+	d = debugfs_create_dir("wfx", wdev->hw->wiphy->debugfsdir);
+
+	return 0;
+}

drivers/staging/wfx/debug.h

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Debugfs interface.
+ *
+ * Copyright (c) 2017-2019, Silicon Laboratories, Inc.
+ * Copyright (c) 2011, ST-Ericsson
+ */
+#ifndef WFX_DEBUG_H
+#define WFX_DEBUG_H
+
+struct wfx_dev;
+
+int wfx_debug_init(struct wfx_dev *wdev);
+
+#endif /* WFX_DEBUG_H */

drivers/staging/wfx/main.c

@@ -25,6 +25,9 @@
 #include "hwio.h"
 #include "bus.h"
 #include "bh.h"
+#include "sta.h"
+#include "debug.h"
+#include "hif_api_cmd.h"
 #include "wfx_version.h"
 
 MODULE_DESCRIPTION("Silicon Labs 802.11 Wireless LAN driver for WFx");
@@ -36,6 +39,13 @@ static int gpio_wakeup = -2;
 module_param(gpio_wakeup, int, 0644);
 MODULE_PARM_DESC(gpio_wakeup, "gpio number for wakeup. -1 for none.");
 
+static const struct ieee80211_ops wfx_ops = {
+	.start			= wfx_start,
+	.stop			= wfx_stop,
+	.add_interface		= wfx_add_interface,
+	.remove_interface	= wfx_remove_interface,
+};
+
 bool wfx_api_older_than(struct wfx_dev *wdev, int major, int minor)
 {
 	if (wdev->hw_caps.api_version_major < major)
@@ -79,11 +89,26 @@ struct wfx_dev *wfx_init_common(struct device *dev,
 				const struct hwbus_ops *hwbus_ops,
 				void *hwbus_priv)
 {
+	struct ieee80211_hw *hw;
 	struct wfx_dev *wdev;
 
-	wdev = devm_kmalloc(dev, sizeof(*wdev), GFP_KERNEL);
-	if (!wdev)
+	hw = ieee80211_alloc_hw(sizeof(struct wfx_dev), &wfx_ops);
+	if (!hw)
 		return NULL;
+
+	SET_IEEE80211_DEV(hw, dev);
+
+	hw->vif_data_size = sizeof(struct wfx_vif);
+	hw->sta_data_size = sizeof(struct wfx_sta_priv);
+	hw->queues = 4;
+	hw->max_rates = 8;
+	hw->max_rate_tries = 15;
+	hw->extra_tx_headroom = sizeof(struct hif_sl_msg_hdr) + sizeof(struct hif_msg)
+				+ sizeof(struct hif_req_tx)
+				+ 4 /* alignment */ + 8 /* TKIP IV */;
+
+	wdev = hw->priv;
+	wdev->hw = hw;
 	wdev->dev = dev;
 	wdev->hwbus_ops = hwbus_ops;
 	wdev->hwbus_priv = hwbus_priv;
@@ -96,6 +121,7 @@ struct wfx_dev *wfx_init_common(struct device *dev,
 
 void wfx_free_common(struct wfx_dev *wdev)
 {
+	ieee80211_free_hw(wdev->hw);
 }
 
 int wfx_probe(struct wfx_dev *wdev)
@@ -127,6 +153,11 @@ int wfx_probe(struct wfx_dev *wdev)
 		 wdev->hw_caps.firmware_build, wdev->hw_caps.firmware_label,
 		 wdev->hw_caps.api_version_major, wdev->hw_caps.api_version_minor,
 		 wdev->keyset, *((u32 *) &wdev->hw_caps.capabilities));
+	snprintf(wdev->hw->wiphy->fw_version, sizeof(wdev->hw->wiphy->fw_version),
+		 "%d.%d.%d",
+		 wdev->hw_caps.firmware_major,
+		 wdev->hw_caps.firmware_minor,
+		 wdev->hw_caps.firmware_build);
 
 	if (wfx_api_older_than(wdev, 1, 0)) {
 		dev_err(wdev->dev, "unsupported firmware API version (expect 1 while firmware returns %d)\n",
@@ -150,8 +181,14 @@ int wfx_probe(struct wfx_dev *wdev)
 		dev_info(wdev->dev, "MAC address %d: %pM\n", i, wdev->addresses[i].addr);
 	}
 
+	err = wfx_debug_init(wdev);
+	if (err)
+		goto err2;
+
 	return 0;
 
+err2:
+	ieee80211_free_hw(wdev->hw);
 err1:
 	wfx_bh_unregister(wdev);
 	return err;

drivers/staging/wfx/sta.c

@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Implementation of mac80211 API.
+ *
+ * Copyright (c) 2017-2019, Silicon Laboratories, Inc.
+ * Copyright (c) 2010, ST-Ericsson
+ */
+#include <net/mac80211.h>
+
+#include "sta.h"
+#include "wfx.h"
+
+int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+	int i;
+	struct wfx_dev *wdev = hw->priv;
+	struct wfx_vif *wvif = (struct wfx_vif *) vif->drv_priv;
+
+	for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
+		if (!wdev->vif[i]) {
+			wdev->vif[i] = vif;
+			wvif->id = i;
+			break;
+		}
+	}
+	if (i == ARRAY_SIZE(wdev->vif))
+		return -EOPNOTSUPP;
+	wvif->vif = vif;
+	wvif->wdev = wdev;
+
+	return 0;
+}
+
+void wfx_remove_interface(struct ieee80211_hw *hw,
+			  struct ieee80211_vif *vif)
+{
+}
+
+int wfx_start(struct ieee80211_hw *hw)
+{
+	return 0;
+}
+
+void wfx_stop(struct ieee80211_hw *hw)
+{
+}

drivers/staging/wfx/sta.h

@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Implementation of mac80211 API.
+ *
+ * Copyright (c) 2017-2019, Silicon Laboratories, Inc.
+ * Copyright (c) 2010, ST-Ericsson
+ */
+#ifndef WFX_STA_H
+#define WFX_STA_H
+
+#include <net/mac80211.h>
+
+struct wfx_sta_priv {
+	int link_id;
+	int vif_id;
+};
+
+// mac80211 interface
+int wfx_start(struct ieee80211_hw *hw);
+void wfx_stop(struct ieee80211_hw *hw);
+int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
+void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
+
+#endif /* WFX_STA_H */

drivers/staging/wfx/wfx.h

@@ -22,6 +22,8 @@ struct hwbus_ops;
 struct wfx_dev {
 	struct wfx_platform_data pdata;
 	struct device		*dev;
+	struct ieee80211_hw	*hw;
+	struct ieee80211_vif	*vif[2];
 	struct mac_address	addresses[2];
 	const struct hwbus_ops	*hwbus_ops;
 	void			*hwbus_priv;
@@ -32,4 +34,10 @@ struct wfx_dev {
 	struct wfx_hif		hif;
 };
 
+struct wfx_vif {
+	struct wfx_dev		*wdev;
+	struct ieee80211_vif	*vif;
+	int			id;
+};
+
 #endif /* WFX_H */