Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 240 insertions, 0 deletions

diff --git a/drivers/net/wireless/zd1211rw/zd_usb.h b/drivers/net/wireless/zd1211rw/zd_usb.h
new file mode 100644
index 000000000000..d6420283bd5a
--- /dev/null
+++ b/drivers/net/wireless/zd1211rw/zd_usb.h
@@ -0,0 +1,240 @@
+/* zd_usb.h: Header for USB interface implemented by ZD1211 chip
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#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"
+#include "zd_types.h"
+
+enum devicetype {
+        DEVICE_ZD1211  = 0,
+        DEVICE_ZD1211B = 1,
+};
+
+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[0];
+} __attribute__((packed));
+
+struct reg_data {
+        __le16 addr;
+        __le16 value;
+} __attribute__((packed));
+
+struct usb_req_write_regs {
+        __le16 id;
+        struct reg_data reg_writes[0];
+} __attribute__((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[0];
+        /* (CR203 & ~(RF_IF_LE | RF_CLK | RF_DATA)) | (bit ? RF_DATA : 0) */
+} __attribute__((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;
+} __attribute__((packed));
+
+struct usb_int_regs {
+        struct usb_int_header hdr;
+        struct reg_data regs[0];
+} __attribute__((packed));
+
+struct usb_int_retry_fail {
+        struct usb_int_header hdr;
+        u8 new_rate;
+        u8 _dummy;
+        u8 addr[ETH_ALEN];
+        u8 ibss_wakeup_dest;
+} __attribute__((packed));
+
+struct read_regs_int {
+        struct completion completion;
+        /* 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;
+        int interval;
+        u8 read_regs_enabled: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 URBS_COUNT 5
+
+struct zd_usb_rx {
+        spinlock_t lock;
+        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 {
+        spinlock_t lock;
+};
+
+/* Contains the usb parts. The structure doesn't require a lock, because intf
+ * and fw_base_offset, 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;
+        u16 fw_base_offset;
+};
+
+#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 net_device *zd_intf_to_netdev(struct usb_interface *intf)
+{
+        return usb_get_intfdata(intf);
+}
+
+static inline struct net_device *zd_usb_to_netdev(struct zd_usb *usb)
+{
+        return zd_intf_to_netdev(usb->intf);
+}
+
+void zd_usb_init(struct zd_usb *usb, struct net_device *netdev,
+                 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);
+
+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);
+
+int zd_usb_tx(struct zd_usb *usb, const u8 *frame, unsigned int length);
+
+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, (const zd_addr_t *)&addr, 1);
+}
+
+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);
+
+#endif /* _ZD_USB_H */