Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 280 insertions, 0 deletions

diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_usb.h b/drivers/net/wireless/zydas/zd1211rw/zd_usb.h
new file mode 100644
index 0000000000..8f03b09a60
--- /dev/null
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_usb.h
@@ -0,0 +1,280 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ */
+
+#ifndef _ZD_USB_H
+#define _ZD_USB_H
+
+#include <linux/completion.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <linux/skbuff.h>
+#include <linux/usb.h>
+
+#include "zd_def.h"
+
+#define ZD_USB_TX_HIGH  5
+#define ZD_USB_TX_LOW   2
+
+#define ZD_TX_TIMEOUT		(HZ * 5)
+#define ZD_TX_WATCHDOG_INTERVAL	round_jiffies_relative(HZ)
+#define ZD_RX_IDLE_INTERVAL	round_jiffies_relative(30 * HZ)
+
+enum devicetype {
+	DEVICE_ZD1211  = 0,
+	DEVICE_ZD1211B = 1,
+	DEVICE_INSTALLER = 2,
+};
+
+enum endpoints {
+	EP_CTRL	    = 0,
+	EP_DATA_OUT = 1,
+	EP_DATA_IN  = 2,
+	EP_INT_IN   = 3,
+	EP_REGS_OUT = 4,
+};
+
+enum {
+	USB_MAX_TRANSFER_SIZE		= 4096, /* bytes */
+	/* FIXME: The original driver uses this value. We have to check,
+	 * whether the MAX_TRANSFER_SIZE is sufficient and this needs only be
+	 * used if one combined frame is split over two USB transactions.
+	 */
+	USB_MAX_RX_SIZE			= 4800, /* bytes */
+	USB_MAX_IOWRITE16_COUNT		= 15,
+	USB_MAX_IOWRITE32_COUNT		= USB_MAX_IOWRITE16_COUNT/2,
+	USB_MAX_IOREAD16_COUNT		= 15,
+	USB_MAX_IOREAD32_COUNT		= USB_MAX_IOREAD16_COUNT/2,
+	USB_MIN_RFWRITE_BIT_COUNT	= 16,
+	USB_MAX_RFWRITE_BIT_COUNT	= 28,
+	USB_MAX_EP_INT_BUFFER		= 64,
+	USB_ZD1211B_BCD_DEVICE		= 0x4810,
+};
+
+enum control_requests {
+	USB_REQ_WRITE_REGS		= 0x21,
+	USB_REQ_READ_REGS		= 0x22,
+	USB_REQ_WRITE_RF		= 0x23,
+	USB_REQ_PROG_FLASH		= 0x24,
+	USB_REQ_EEPROM_START		= 0x0128, /* ? request is a byte */
+	USB_REQ_EEPROM_MID		= 0x28,
+	USB_REQ_EEPROM_END		= 0x0228, /* ? request is a byte */
+	USB_REQ_FIRMWARE_DOWNLOAD	= 0x30,
+	USB_REQ_FIRMWARE_CONFIRM	= 0x31,
+	USB_REQ_FIRMWARE_READ_DATA	= 0x32,
+};
+
+struct usb_req_read_regs {
+	__le16 id;
+	__le16 addr[];
+} __packed;
+
+struct reg_data {
+	__le16 addr;
+	__le16 value;
+} __packed;
+
+struct usb_req_write_regs {
+	__le16 id;
+	struct reg_data reg_writes[];
+} __packed;
+
+enum {
+	RF_IF_LE = 0x02,
+	RF_CLK   = 0x04,
+	RF_DATA	 = 0x08,
+};
+
+struct usb_req_rfwrite {
+	__le16 id;
+	__le16 value;
+	/* 1: 3683a */
+	/* 2: other (default) */
+	__le16 bits;
+	/* RF2595: 24 */
+	__le16 bit_values[];
+	/* (ZD_CR203 & ~(RF_IF_LE | RF_CLK | RF_DATA)) | (bit ? RF_DATA : 0) */
+} __packed;
+
+/* USB interrupt */
+
+enum usb_int_id {
+	USB_INT_TYPE			= 0x01,
+	USB_INT_ID_REGS			= 0x90,
+	USB_INT_ID_RETRY_FAILED		= 0xa0,
+};
+
+enum usb_int_flags {
+	USB_INT_READ_REGS_EN		= 0x01,
+};
+
+struct usb_int_header {
+	u8 type;	/* must always be 1 */
+	u8 id;
+} __packed;
+
+struct usb_int_regs {
+	struct usb_int_header hdr;
+	struct reg_data regs[];
+} __packed;
+
+struct usb_int_retry_fail {
+	struct usb_int_header hdr;
+	u8 new_rate;
+	u8 _dummy;
+	u8 addr[ETH_ALEN];
+	u8 ibss_wakeup_dest;
+} __packed;
+
+struct read_regs_int {
+	struct completion completion;
+	struct usb_req_read_regs *req;
+	unsigned int req_count;
+	/* Stores the USB int structure and contains the USB address of the
+	 * first requested register before request.
+	 */
+	u8 buffer[USB_MAX_EP_INT_BUFFER];
+	int length;
+	__le16 cr_int_addr;
+};
+
+struct zd_ioreq16 {
+	zd_addr_t addr;
+	u16 value;
+};
+
+struct zd_ioreq32 {
+	zd_addr_t addr;
+	u32 value;
+};
+
+struct zd_usb_interrupt {
+	struct read_regs_int read_regs;
+	spinlock_t lock;
+	struct urb *urb;
+	void *buffer;
+	dma_addr_t buffer_dma;
+	int interval;
+	atomic_t read_regs_enabled;
+	u8 read_regs_int_overridden:1;
+};
+
+static inline struct usb_int_regs *get_read_regs(struct zd_usb_interrupt *intr)
+{
+	return (struct usb_int_regs *)intr->read_regs.buffer;
+}
+
+#define RX_URBS_COUNT 5
+
+struct zd_usb_rx {
+	spinlock_t lock;
+	struct mutex setup_mutex;
+	struct delayed_work idle_work;
+	struct tasklet_struct reset_timer_tasklet;
+	u8 fragment[2 * USB_MAX_RX_SIZE];
+	unsigned int fragment_length;
+	unsigned int usb_packet_size;
+	struct urb **urbs;
+	int urbs_count;
+};
+
+/**
+ * struct zd_usb_tx - structure used for transmitting frames
+ * @enabled: atomic enabled flag, indicates whether tx is enabled
+ * @lock: lock for transmission
+ * @submitted: anchor for URBs sent to device
+ * @submitted_urbs: atomic integer that counts the URBs having sent to the
+ *	device, which haven't been completed
+ * @stopped: indicates whether higher level tx queues are stopped
+ */
+struct zd_usb_tx {
+	atomic_t enabled;
+	spinlock_t lock;
+	struct delayed_work watchdog_work;
+	struct sk_buff_head submitted_skbs;
+	struct usb_anchor submitted;
+	int submitted_urbs;
+	u8 stopped:1, watchdog_enabled:1;
+};
+
+/* Contains the usb parts. The structure doesn't require a lock because intf
+ * will not be changed after initialization.
+ */
+struct zd_usb {
+	struct zd_usb_interrupt intr;
+	struct zd_usb_rx rx;
+	struct zd_usb_tx tx;
+	struct usb_interface *intf;
+	struct usb_anchor submitted_cmds;
+	struct urb *urb_async_waiting;
+	int cmd_error;
+	u8 req_buf[64]; /* zd_usb_iowrite16v needs 62 bytes */
+	u8 is_zd1211b:1, initialized:1, was_running:1, in_async:1;
+};
+
+#define zd_usb_dev(usb) (&usb->intf->dev)
+
+static inline struct usb_device *zd_usb_to_usbdev(struct zd_usb *usb)
+{
+	return interface_to_usbdev(usb->intf);
+}
+
+static inline struct ieee80211_hw *zd_intf_to_hw(struct usb_interface *intf)
+{
+	return usb_get_intfdata(intf);
+}
+
+static inline struct ieee80211_hw *zd_usb_to_hw(struct zd_usb *usb)
+{
+	return zd_intf_to_hw(usb->intf);
+}
+
+void zd_usb_init(struct zd_usb *usb, struct ieee80211_hw *hw,
+	         struct usb_interface *intf);
+int zd_usb_init_hw(struct zd_usb *usb);
+void zd_usb_clear(struct zd_usb *usb);
+
+int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size);
+
+void zd_tx_watchdog_enable(struct zd_usb *usb);
+void zd_tx_watchdog_disable(struct zd_usb *usb);
+
+int zd_usb_enable_int(struct zd_usb *usb);
+void zd_usb_disable_int(struct zd_usb *usb);
+
+int zd_usb_enable_rx(struct zd_usb *usb);
+void zd_usb_disable_rx(struct zd_usb *usb);
+
+void zd_usb_reset_rx_idle_timer(struct zd_usb *usb);
+
+void zd_usb_enable_tx(struct zd_usb *usb);
+void zd_usb_disable_tx(struct zd_usb *usb);
+
+int zd_usb_tx(struct zd_usb *usb, struct sk_buff *skb);
+
+int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
+	         const zd_addr_t *addresses, unsigned int count);
+
+static inline int zd_usb_ioread16(struct zd_usb *usb, u16 *value,
+	                      const zd_addr_t addr)
+{
+	return zd_usb_ioread16v(usb, value, &addr, 1);
+}
+
+void zd_usb_iowrite16v_async_start(struct zd_usb *usb);
+int zd_usb_iowrite16v_async_end(struct zd_usb *usb, unsigned int timeout);
+int zd_usb_iowrite16v_async(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
+			    unsigned int count);
+int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
+	              unsigned int count);
+
+int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits);
+
+int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len);
+
+extern struct workqueue_struct *zd_workqueue;
+
+#endif /* _ZD_USB_H */