diff options
Diffstat (limited to 'drivers/net/wireless/zd1211rw/zd_usb.h')
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_usb.h | 240 |
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 00000000000..d6420283bd5 --- /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 */ |