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/*-
* Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _HID_HIDBUS_H_
#define _HID_HIDBUS_H_
enum {
HIDBUS_IVAR_USAGE,
HIDBUS_IVAR_INDEX,
HIDBUS_IVAR_FLAGS,
#define HIDBUS_FLAG_AUTOCHILD (0<<1) /* Child is autodiscovered */
#define HIDBUS_FLAG_CAN_POLL (1<<1) /* Child can work during panic */
HIDBUS_IVAR_DRIVER_INFO,
HIDBUS_IVAR_LOCK,
};
#define HIDBUS_ACCESSOR(A, B, T) \
__BUS_ACCESSOR(hidbus, A, HIDBUS, B, T)
HIDBUS_ACCESSOR(usage, USAGE, int32_t)
HIDBUS_ACCESSOR(index, INDEX, uint8_t)
HIDBUS_ACCESSOR(flags, FLAGS, uint32_t)
HIDBUS_ACCESSOR(driver_info, DRIVER_INFO, uintptr_t)
HIDBUS_ACCESSOR(lock, LOCK, struct mtx *)
/*
* The following structure is used when looking up an HID driver for
* an HID device. It is inspired by the structure called "usb_device_id".
* which is originated in Linux and ported to FreeBSD.
*/
struct hid_device_id {
/* Select which fields to match against */
#if BYTE_ORDER == LITTLE_ENDIAN
uint16_t
match_flag_page:1,
match_flag_usage:1,
match_flag_bus:1,
match_flag_vendor:1,
match_flag_product:1,
match_flag_ver_lo:1,
match_flag_ver_hi:1,
match_flag_pnp:1,
match_flag_unused:8;
#else
uint16_t
match_flag_unused:8,
match_flag_pnp:1,
match_flag_ver_hi:1,
match_flag_ver_lo:1,
match_flag_product:1,
match_flag_vendor:1,
match_flag_bus:1,
match_flag_usage:1,
match_flag_page:1;
#endif
/* Used for top level collection usage matches */
uint16_t page;
uint16_t usage;
/* Used for product specific matches; the Version range is inclusive */
uint8_t idBus;
uint16_t idVendor;
uint16_t idProduct;
uint16_t idVersion_lo;
uint16_t idVersion_hi;
char *idPnP;
/* Hook for driver specific information */
uintptr_t driver_info;
};
#define HID_STD_PNP_INFO \
"M16:mask;U16:page;U16:usage;U8:bus;U16:vendor;U16:product;" \
"L16:version;G16:version;Z:_HID"
#define HID_PNP_INFO(table) \
MODULE_PNP_INFO(HID_STD_PNP_INFO, hidbus, table, table, nitems(table))
#define HID_TLC(pg,usg) \
.match_flag_page = 1, .match_flag_usage = 1, .page = (pg), .usage = (usg)
#define HID_BUS(bus) \
.match_flag_bus = 1, .idBus = (bus)
#define HID_VENDOR(vend) \
.match_flag_vendor = 1, .idVendor = (vend)
#define HID_PRODUCT(prod) \
.match_flag_product = 1, .idProduct = (prod)
#define HID_VP(vend,prod) \
HID_VENDOR(vend), HID_PRODUCT(prod)
#define HID_BVP(bus,vend,prod) \
HID_BUS(bus), HID_VENDOR(vend), HID_PRODUCT(prod)
#define HID_BVPI(bus,vend,prod,info) \
HID_BUS(bus), HID_VENDOR(vend), HID_PRODUCT(prod), HID_DRIVER_INFO(info)
#define HID_VERSION_GTEQ(lo) /* greater than or equal */ \
.match_flag_ver_lo = 1, .idVersion_lo = (lo)
#define HID_VERSION_LTEQ(hi) /* less than or equal */ \
.match_flag_ver_hi = 1, .idVersion_hi = (hi)
#define HID_PNP(pnp) \
.match_flag_pnp = 1, .idPnP = (pnp)
#define HID_DRIVER_INFO(n) \
.driver_info = (n)
#define HID_GET_DRIVER_INFO(did) \
(did)->driver_info
#define HIDBUS_LOOKUP_ID(d, h) hidbus_lookup_id((d), (h), nitems(h))
#define HIDBUS_LOOKUP_DRIVER_INFO(d, h) \
hidbus_lookup_driver_info((d), (h), nitems(h))
/*
* Walk through all HID items hi belonging Top Level Collection #tlc_index
*/
#define HIDBUS_FOREACH_ITEM(hd, hi, tlc_index) \
for (uint8_t _iter = 0; \
_iter <= (tlc_index) && hid_get_item((hd), (hi)); \
_iter += (hi)->kind == hid_endcollection && (hi)->collevel == 0) \
if (_iter == (tlc_index))
int hidbus_locate(const void *desc, hid_size_t size, int32_t u,
enum hid_kind k, uint8_t tlc_index, uint8_t index,
struct hid_location *loc, uint32_t *flags, uint8_t *id,
struct hid_absinfo *ai);
const struct hid_device_id *hidbus_lookup_id(device_t,
const struct hid_device_id *, int);
struct hid_rdesc_info *hidbus_get_rdesc_info(device_t);
int hidbus_lookup_driver_info(device_t,
const struct hid_device_id *, int);
void hidbus_set_intr(device_t, hid_intr_t*, void *);
int hidbus_intr_start(device_t);
int hidbus_intr_stop(device_t);
void hidbus_intr_poll(device_t);
void hidbus_set_desc(device_t, const char *);
device_t hidbus_find_child(device_t, int32_t);
/* hidbus HID interface */
int hid_get_report_descr(device_t, void **, hid_size_t *);
int hid_set_report_descr(device_t, const void *, hid_size_t);
const struct hid_device_info *hid_get_device_info(device_t);
extern devclass_t hidbus_devclass;
#endif /* _HID_HIDBUS_H_ */
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