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/* $OpenBSD: usbfvar.h,v 1.8 2013/04/15 09:23:02 mglocker Exp $ */
/*
* Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* USB function driver interface
*
* This file is to be included only by the logical device driver and the
* USB device controller (DC) driver.
*/
/*** structures corresponding to USB protocol components ***/
struct usbf_endpoint {
struct usbf_interface *iface;
usb_endpoint_descriptor_t *edesc;
int halted; /* UF_ENDPOINT_HALT set */
int refcnt;
SIMPLEQ_ENTRY(usbf_endpoint) next;
};
struct usbf_interface {
struct usbf_config *config;
usb_interface_descriptor_t *idesc;
LIST_HEAD(, usbf_pipe) pipes;
SIMPLEQ_HEAD(, usbf_endpoint) endpoint_head;
SIMPLEQ_ENTRY(usbf_interface) next;
};
struct usbf_config {
struct usbf_device *uc_device;
usb_config_descriptor_t *uc_cdesc;
size_t uc_cdesc_size;
int uc_closed;
SIMPLEQ_HEAD(, usbf_interface) iface_head;
SIMPLEQ_ENTRY(usbf_config) next;
};
struct usbf_device {
struct device bdev; /* base device */
struct usbf_bus *bus; /* device controller */
struct usbf_function *function; /* function driver */
struct usbf_pipe *default_pipe; /* pipe 0 (device control) */
struct usbf_xfer *default_xfer; /* device request xfer */
struct usbf_xfer *data_xfer; /* request response xfer */
int address; /* assigned by host (or 0) */
struct usbf_config *config; /* set by host (or NULL) */
usb_status_t status; /* device status */
usb_device_request_t def_req; /* device request buffer */
struct usbf_endpoint def_ep; /* for pipe 0 */
usb_endpoint_descriptor_t def_ep_desc; /* for pipe 0 */
usb_device_descriptor_t ddesc; /* device descriptor */
usb_string_descriptor_t *sdesc; /* string descriptors */
size_t sdesc_size; /* size of ud_sdesc */
uByte string_id; /* next string id */
SIMPLEQ_HEAD(, usbf_config) configs;
};
/*** software control structures ***/
struct usbf_pipe_methods {
usbf_status (*transfer)(struct usbf_xfer *);
usbf_status (*start)(struct usbf_xfer *);
void (*abort)(struct usbf_xfer *);
void (*done)(struct usbf_xfer *);
void (*close)(struct usbf_pipe *);
};
struct usbf_bus_methods {
usbf_status (*open_pipe)(struct usbf_pipe *);
void (*soft_intr)(void *);
usbf_status (*allocm)(struct usbf_bus *, struct usb_dma *,
u_int32_t);
void (*freem)(struct usbf_bus *, struct usb_dma *);
struct usbf_xfer *(*allocx)(struct usbf_bus *);
void (*freex)(struct usbf_bus *, struct usbf_xfer *);
};
struct usbf_softc;
struct usbf_bus {
/* Filled by DC driver */
struct device bdev; /* base device */
struct usbf_bus_methods *methods;
size_t pipe_size; /* size of pipe struct */
u_int8_t ep0_maxp; /* packet size for EP0 */
int usbrev; /* as in struct usbd_bus */
/* Filled by usbf driver */
struct usbf_softc *usbfctl;
int intr_context;
void *soft; /* soft interrupt cookie */
bus_dma_tag_t dmatag; /* DMA tag */
};
struct usbf_port {
usb_port_status_t status;
u_int8_t portno;
struct usbf_device *device; /* connected function */
};
struct usbf_pipe {
struct usbf_device *device;
struct usbf_interface *iface; /* unless default pipe */
struct usbf_endpoint *endpoint;
int refcnt;
int running;
int aborting;
SIMPLEQ_HEAD(, usbf_xfer) queue;
LIST_ENTRY(usbf_pipe) next;
char repeat;
int interval;
/* Filled by DC driver. */
struct usbf_pipe_methods *methods;
};
struct usbf_xfer {
struct usbf_pipe *pipe;
void *priv;
void *buffer;
u_int32_t length;
u_int32_t actlen;
u_int16_t flags;
u_int32_t timeout;
usbf_status status;
usbf_callback callback;
SIMPLEQ_ENTRY(usbf_xfer) next;
/* for memory management */
struct usbf_device *device;
int rqflags;
struct usb_dma dmabuf;
struct timeout timeout_handle;
};
/* usbf.c */
void usbf_host_reset(struct usbf_bus *);
void usbf_do_request(struct usbf_xfer *, void *, usbf_status);
/* usbf_subr.c */
usbf_status usbf_new_device(struct device *, struct usbf_bus *, int, int, int,
struct usbf_port *);
usbf_status usbf_set_endpoint_feature(struct usbf_config *, u_int8_t,
u_int16_t);
usbf_status usbf_clear_endpoint_feature(struct usbf_config *, u_int8_t,
u_int16_t);
usbf_status usbf_insert_transfer(struct usbf_xfer *xfer);
void usbf_transfer_complete(struct usbf_xfer *xfer);
usbf_status usbf_allocmem(struct usbf_bus *, size_t, size_t, struct usb_dma *);
void usbf_freemem(struct usbf_bus *, struct usb_dma *);
usbf_status usbf_softintr_establish(struct usbf_bus *);
void usbf_schedsoftintr(struct usbf_bus *);
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