488 lines
12 KiB
C
488 lines
12 KiB
C
/* $NetBSD: ukbd.c,v 1.1 1998/07/12 19:52:00 augustss Exp $ */
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/*
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Author: Lennart Augustsson <augustss@carlstedt.se>
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* Carlstedt Research & Technology
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/file.h>
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#include <sys/select.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/device.h>
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#include <sys/poll.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdi_util.h>
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#include <dev/usb/usbdevs.h>
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#include <dev/usb/usb_quirks.h>
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#include <dev/usb/hid.h>
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#ifdef USB_DEBUG
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#define DPRINTF(x) if (ukbddebug) printf x
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#define DPRINTFN(n,x) if (ukbddebug>(n)) printf x
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int ukbddebug = 0;
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n,x)
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#endif
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#define UPROTO_BOOT_KEYBOARD 1
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#define NKEYCODE 6
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struct ukbd_data {
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u_int8_t modifiers;
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#define MOD_CONTROL_L 0x01
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#define MOD_CONTROL_R 0x10
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#define MOD_SHIFT_L 0x02
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#define MOD_SHIFT_R 0x20
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#define MOD_ALT_L 0x04
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#define MOD_ALT_R 0x40
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#define MOD_WIN_L 0x08
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#define MOD_WIN_R 0x80
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u_int8_t reserved;
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u_int8_t keycode[NKEYCODE];
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};
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#define PRESS 0
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#define RELEASE 0x80
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#define NMOD 6
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static struct {
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int mask, key;
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} ukbd_mods[NMOD] = {
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{ MOD_CONTROL_L, 29 },
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{ MOD_CONTROL_R, 58 },
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{ MOD_SHIFT_L, 42 },
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{ MOD_SHIFT_R, 54 },
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{ MOD_ALT_L, 56 },
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{ MOD_ALT_R, 56 },
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};
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#define XX 0
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/* Translate USB keycodes to US keyboard scancodes. */
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/* XXX very incomplete */
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static char ukbd_trtab[256] = {
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0, 0, 0, 0, 30, 48, 46, 32,
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18, 33, 34, 35, 23, 36, 37, 38,
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50, 49, 24, 25, 16, 19, 31, 20,
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22, 47, 17, 45, 21, 44, 2, 3,
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4, 5, 6, 7, 8, 9, 10, 11,
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28, 1, 14, 15, 57, 12, 13, 26,
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27, 43, XX, 39, 40, 41, 51, 52,
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53, 58, 59, 60, 61, 62, 63, 64,
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65, 66, 67, 68, 87, 88, XX, 70,
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XX, XX, XX, XX, XX,
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};
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#define KEY_ERROR 0x01
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struct ukbd_softc {
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struct device sc_dev; /* base device */
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usbd_interface_handle sc_iface; /* interface */
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usbd_pipe_handle sc_intrpipe; /* interrupt pipe */
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int sc_ep_addr;
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struct ukbd_data sc_ndata;
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struct ukbd_data sc_odata;
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struct clist sc_q;
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struct selinfo sc_rsel;
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u_char sc_state; /* keyboard driver state */
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#define UKBD_OPEN 0x01 /* device is open */
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#define UKBD_ASLP 0x02 /* waiting for keyboard data */
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#define UKBD_NEEDCLEAR 0x04 /* needs clearing endpoint stall */
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int sc_disconnected; /* device is gone */
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};
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#define UKBDUNIT(dev) (minor(dev))
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#define UKBD_CHUNK 128 /* chunk size for read */
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#define UKBD_BSIZE 1020 /* buffer size */
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int ukbd_match __P((struct device *, struct cfdata *, void *));
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void ukbd_attach __P((struct device *, struct device *, void *));
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int ukbdopen __P((dev_t, int, int, struct proc *));
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int ukbdclose __P((dev_t, int, int, struct proc *p));
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int ukbdread __P((dev_t, struct uio *uio, int));
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int ukbdioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
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int ukbdpoll __P((dev_t, int, struct proc *));
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void ukbd_intr __P((usbd_request_handle, usbd_private_handle, usbd_status));
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void ukbd_disco __P((void *));
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extern struct cfdriver ukbd_cd;
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struct cfattach ukbd_ca = {
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sizeof(struct ukbd_softc), ukbd_match, ukbd_attach
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};
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int
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ukbd_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct usb_attach_arg *uaa = (struct usb_attach_arg *)aux;
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usb_interface_descriptor_t *id;
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/* Check that this is a keyboard that speaks the boot protocol. */
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if (!uaa->iface)
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return (UMATCH_NONE);
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id = usbd_get_interface_descriptor(uaa->iface);
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if (id->bInterfaceClass != UCLASS_HID ||
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id->bInterfaceSubClass != USUBCLASS_BOOT ||
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id->bInterfaceProtocol != UPROTO_BOOT_KEYBOARD)
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return (UMATCH_NONE);
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return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO);
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}
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void
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ukbd_attach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct ukbd_softc *sc = (struct ukbd_softc *)self;
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struct usb_attach_arg *uaa = aux;
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usbd_interface_handle iface = uaa->iface;
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usb_interface_descriptor_t *id;
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usb_endpoint_descriptor_t *ed;
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usbd_status r;
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char devinfo[1024];
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sc->sc_disconnected = 1;
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sc->sc_iface = iface;
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id = usbd_get_interface_descriptor(iface);
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usbd_devinfo(uaa->device, 0, devinfo);
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printf(": %s (interface class %d/%d)\n", devinfo,
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id->bInterfaceClass, id->bInterfaceSubClass);
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ed = usbd_interface2endpoint_descriptor(iface, 0);
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if (!ed) {
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printf("%s: could not read endpoint descriptor\n",
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sc->sc_dev.dv_xname);
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return;
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}
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DPRINTFN(10,("ukbd_attach: \
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bLength=%d bDescriptorType=%d bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d bInterval=%d\n",
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ed->bLength, ed->bDescriptorType, ed->bEndpointAddress & UE_ADDR,
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ed->bEndpointAddress & UE_IN ? "in" : "out",
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ed->bmAttributes & UE_XFERTYPE,
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UGETW(ed->wMaxPacketSize), ed->bInterval));
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if ((ed->bEndpointAddress & UE_IN) != UE_IN ||
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(ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
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printf("%s: unexpected endpoint\n",
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sc->sc_dev.dv_xname);
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return;
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}
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if ((usbd_get_quirks(uaa->device)->uq_flags & UQ_NO_SET_PROTO) == 0) {
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r = usbd_set_protocol(iface, 0);
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DPRINTFN(5, ("ukbd_attach: protocol set\n"));
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if (r != USBD_NORMAL_COMPLETION) {
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printf("%s: set protocol failed\n",
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sc->sc_dev.dv_xname);
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return;
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}
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}
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sc->sc_ep_addr = ed->bEndpointAddress;
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sc->sc_disconnected = 0;
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}
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void
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ukbd_disco(p)
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void *p;
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{
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struct ukbd_softc *sc = p;
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sc->sc_disconnected = 1;
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}
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void
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ukbd_intr(reqh, addr, status)
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usbd_request_handle reqh;
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usbd_private_handle addr;
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usbd_status status;
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{
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struct ukbd_softc *sc = addr;
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struct ukbd_data *ud = &sc->sc_ndata;
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int mod, omod;
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char ibuf[NMOD+2*NKEYCODE]; /* chars events */
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int nkeys, i, j;
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int key, ch;
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#define ADDKEY(c) ibuf[nkeys++] = (c)
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DPRINTFN(5, ("ukbd_intr: status=%d\n", status));
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if (status == USBD_CANCELLED)
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return;
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if (status != USBD_NORMAL_COMPLETION) {
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DPRINTF(("ukbd_intr: status=%d\n", status));
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sc->sc_state |= UKBD_NEEDCLEAR;
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return;
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}
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DPRINTFN(5, (" mod=0x%02x key0=0x%02x key1=0x%02x\n",
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ud->modifiers, ud->keycode[0], ud->keycode[1]));
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if (ud->keycode[0] == KEY_ERROR)
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return; /* ignore */
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nkeys = 0;
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mod = ud->modifiers;
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omod = sc->sc_odata.modifiers;
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if (mod != omod)
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for (i = 0; i < NMOD; i++)
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if (( mod & ukbd_mods[i].mask) !=
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(omod & ukbd_mods[i].mask))
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ADDKEY(ukbd_mods[i].key |
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(mod & ukbd_mods[i].mask
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? PRESS : RELEASE));
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if (memcmp(ud->keycode, sc->sc_odata.keycode, NKEYCODE) != 0) {
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/* Check for released keys. */
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for (i = 0; i < NKEYCODE; i++) {
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key = sc->sc_odata.keycode[i];
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if (key == 0)
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continue;
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for (j = 0; j < NKEYCODE; j++)
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if (key == ud->keycode[j])
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goto rfound;
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ch = ukbd_trtab[key];
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if (ch)
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ADDKEY(ch | RELEASE);
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rfound:
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;
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}
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/* Check for pressed keys. */
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for (i = 0; i < NKEYCODE; i++) {
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key = ud->keycode[i];
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if (key == 0)
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continue;
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for (j = 0; j < NKEYCODE; j++)
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if (key == sc->sc_odata.keycode[j])
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goto pfound;
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ch = ukbd_trtab[key];
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if (ch)
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ADDKEY(ch | PRESS);
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pfound:
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;
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}
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}
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sc->sc_odata = *ud;
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if (nkeys) {
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b_to_q(ibuf, nkeys, &sc->sc_q);
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if (sc->sc_state & UKBD_ASLP) {
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sc->sc_state &= ~UKBD_ASLP;
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DPRINTFN(5, ("ukbd_intr: waking %p\n", sc));
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wakeup((caddr_t)sc);
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}
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selwakeup(&sc->sc_rsel);
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}
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}
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int
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ukbdopen(dev, flag, mode, p)
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dev_t dev;
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int flag;
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int mode;
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struct proc *p;
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{
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int unit = UKBDUNIT(dev);
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struct ukbd_softc *sc;
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usbd_status r;
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if (unit >= ukbd_cd.cd_ndevs)
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return ENXIO;
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sc = ukbd_cd.cd_devs[unit];
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if (!sc)
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return ENXIO;
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DPRINTF(("ukbdopen: sc=%p, disco=%d\n", sc, sc->sc_disconnected));
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if (sc->sc_disconnected)
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return (EIO);
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if (sc->sc_state & UKBD_OPEN)
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return EBUSY;
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if (clalloc(&sc->sc_q, UKBD_BSIZE, 0) == -1)
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return ENOMEM;
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sc->sc_state |= UKBD_OPEN;
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/* Set up interrupt pipe. */
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r = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
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USBD_SHORT_XFER_OK,
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&sc->sc_intrpipe, sc, &sc->sc_ndata,
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sizeof(sc->sc_ndata), ukbd_intr);
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if (r != USBD_NORMAL_COMPLETION) {
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DPRINTF(("ukbdopen: usbd_open_pipe_intr failed, error=%d\n",r));
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sc->sc_state &= ~UKBD_OPEN;
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clfree(&sc->sc_q);
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return (EIO);
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}
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usbd_set_disco(sc->sc_intrpipe, ukbd_disco, sc);
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return 0;
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}
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int
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ukbdclose(dev, flag, mode, p)
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dev_t dev;
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int flag;
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int mode;
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struct proc *p;
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{
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struct ukbd_softc *sc = ukbd_cd.cd_devs[UKBDUNIT(dev)];
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if (sc->sc_disconnected)
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return (EIO);
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/* Disable interrupts. */
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usbd_abort_pipe(sc->sc_intrpipe);
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usbd_close_pipe(sc->sc_intrpipe);
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sc->sc_state &= ~UKBD_OPEN;
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clfree(&sc->sc_q);
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return 0;
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}
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int
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ukbdread(dev, uio, flag)
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dev_t dev;
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struct uio *uio;
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int flag;
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{
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struct ukbd_softc *sc = ukbd_cd.cd_devs[UKBDUNIT(dev)];
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int s;
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int error = 0;
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size_t length;
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u_char buffer[UKBD_CHUNK];
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if (sc->sc_disconnected)
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return (EIO);
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/* Block until keyboard activity occured. */
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s = spltty();
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while (sc->sc_q.c_cc == 0) {
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if (flag & IO_NDELAY) {
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splx(s);
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return EWOULDBLOCK;
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}
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sc->sc_state |= UKBD_ASLP;
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DPRINTFN(5, ("ukbdread: sleep on %p\n", sc));
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error = tsleep((caddr_t)sc, PZERO | PCATCH, "ukbdrea", 0);
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DPRINTFN(5, ("ukbdread: woke, error=%d\n", error));
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if (error) {
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sc->sc_state &= ~UKBD_ASLP;
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splx(s);
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return error;
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}
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}
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splx(s);
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/* Transfer as many chunks as possible. */
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while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) {
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length = min(sc->sc_q.c_cc, uio->uio_resid);
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if (length > sizeof(buffer))
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length = sizeof(buffer);
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/* Remove a small chunk from the input queue. */
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(void) q_to_b(&sc->sc_q, buffer, length);
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DPRINTFN(5, ("ukbdread: got %d chars\n", length));
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/* Copy the data to the user process. */
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if ((error = uiomove(buffer, length, uio)) != 0)
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break;
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}
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return error;
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}
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int
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ukbdioctl(dev, cmd, addr, flag, p)
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dev_t dev;
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u_long cmd;
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caddr_t addr;
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int flag;
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struct proc *p;
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{
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struct ukbd_softc *sc = ukbd_cd.cd_devs[UKBDUNIT(dev)];
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if (sc->sc_disconnected)
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return (EIO);
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return EINVAL;
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}
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int
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ukbdpoll(dev, events, p)
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dev_t dev;
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int events;
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struct proc *p;
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{
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struct ukbd_softc *sc = ukbd_cd.cd_devs[UKBDUNIT(dev)];
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int revents = 0;
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int s;
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if (sc->sc_disconnected)
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return (EIO);
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s = spltty();
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if (events & (POLLIN | POLLRDNORM))
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if (sc->sc_q.c_cc > 0)
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revents |= events & (POLLIN | POLLRDNORM);
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else
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selrecord(p, &sc->sc_rsel);
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splx(s);
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return (revents);
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}
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