480 lines
12 KiB
C
480 lines
12 KiB
C
/* $NetBSD: ums.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 <machine/mouse.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbhid.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 (umsdebug) printf x
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#define DPRINTFN(n,x) if (umsdebug>(n)) printf x
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int umsdebug = 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 PS2LBUTMASK 0x01
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#define PS2RBUTMASK 0x02
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#define PS2MBUTMASK 0x04
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#define PS2BUTMASK 0x0f
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struct ums_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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u_char *sc_ibuf;
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u_int8_t sc_iid;
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int sc_isize;
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struct hid_location sc_loc_x, sc_loc_y,
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sc_loc_btn1, sc_loc_btn2, sc_loc_btn3;
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struct clist sc_q;
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struct selinfo sc_rsel;
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u_char sc_state; /* mouse driver state */
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#define UMS_OPEN 0x01 /* device is open */
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#define UMS_ASLP 0x02 /* waiting for mouse data */
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#define UMS_NEEDCLEAR 0x04 /* needs clearing endpoint stall */
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u_char sc_status; /* mouse button status */
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int sc_x, sc_y; /* accumulated motion in the X,Y axis */
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int sc_disconnected; /* device is gone */
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};
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#define UMSUNIT(dev) (minor(dev))
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#define UMS_CHUNK 128 /* chunk size for read */
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#define UMS_BSIZE 1020 /* buffer size */
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int ums_match __P((struct device *, struct cfdata *, void *));
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void ums_attach __P((struct device *, struct device *, void *));
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int umsopen __P((dev_t, int, int, struct proc *));
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int umsclose __P((dev_t, int, int, struct proc *p));
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int umsread __P((dev_t, struct uio *uio, int));
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int umsioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
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int umspoll __P((dev_t, int, struct proc *));
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void ums_intr __P((usbd_request_handle, usbd_private_handle, usbd_status));
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void ums_disco __P((void *));
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extern struct cfdriver ums_cd;
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struct cfattach ums_ca = {
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sizeof(struct ums_softc), ums_match, ums_attach
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};
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int
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ums_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 = aux;
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usb_interface_descriptor_t *id;
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int size, ret;
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void *desc;
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usbd_status r;
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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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return (UMATCH_NONE);
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r = usbd_alloc_report_desc(uaa->iface, &desc, &size, M_TEMP);
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if (r != USBD_NORMAL_COMPLETION)
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return (UMATCH_NONE);
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if (hid_is_collection(desc, size,
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HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_MOUSE)))
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ret = UMATCH_IFACECLASS;
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else
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ret = UMATCH_NONE;
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free(desc, M_TEMP);
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return (ret);
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}
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void
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ums_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 ums_softc *sc = (struct ums_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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int size;
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void *desc;
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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,("ums_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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r = usbd_alloc_report_desc(uaa->iface, &desc, &size, M_TEMP);
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if (r != USBD_NORMAL_COMPLETION)
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return;
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if (hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_X),
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hid_input, &sc->sc_loc_x) == 0) {
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printf("%s: mouse has no X report\n", sc->sc_dev.dv_xname);
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return;
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}
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if (hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_Y),
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hid_input, &sc->sc_loc_y) == 0) {
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printf("%s: mouse has no Y report\n", sc->sc_dev.dv_xname);
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return;
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}
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hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, 1),
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hid_input, &sc->sc_loc_btn1);
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hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, 2),
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hid_input, &sc->sc_loc_btn2);
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hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, 3),
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hid_input, &sc->sc_loc_btn3);
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DPRINTF(("ums_attach: sc=%p\n", sc));
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DPRINTF(("ums_attach: X %d/%d\n",
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sc->sc_loc_x.pos, sc->sc_loc_x.size));
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DPRINTF(("ums_attach: Y %d/%d\n",
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sc->sc_loc_x.pos, sc->sc_loc_x.size));
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DPRINTF(("ums_attach: B1 %d/%d\n",
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sc->sc_loc_btn1.pos,sc->sc_loc_btn1.size));
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DPRINTF(("ums_attach: B2 %d/%d\n",
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sc->sc_loc_btn2.pos,sc->sc_loc_btn2.size));
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DPRINTF(("ums_attach: B3 %d/%d\n",
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sc->sc_loc_btn3.pos,sc->sc_loc_btn3.size));
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sc->sc_isize = hid_report_size(desc, size, hid_input, &sc->sc_iid);
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DPRINTF(("ums_attach: size=%d, id=%d\n", sc->sc_isize, sc->sc_iid));
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sc->sc_ibuf = malloc(sc->sc_isize, M_USB, M_NOWAIT);
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if (!sc->sc_ibuf)
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return;
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sc->sc_ep_addr = ed->bEndpointAddress;
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sc->sc_disconnected = 0;
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free(desc, M_TEMP);
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}
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void
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ums_disco(p)
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void *p;
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{
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struct ums_softc *sc = p;
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sc->sc_disconnected = 1;
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}
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void
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ums_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 ums_softc *sc = addr;
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u_char *ibuf;
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char dx, dy;
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u_char buttons, changed;
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u_char buffer[5];
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DPRINTFN(5, ("ums_intr: sc=%p status=%d\n", sc, status));
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DPRINTFN(5, ("ums_intr: data = %02x %02x %02x\n",
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sc->sc_ibuf[0], sc->sc_ibuf[1], sc->sc_ibuf[2]));
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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(("ums_intr: status=%d\n", status));
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sc->sc_state |= UMS_NEEDCLEAR;
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return;
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}
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ibuf = sc->sc_ibuf;
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if (sc->sc_iid) {
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if (*ibuf++ != sc->sc_iid)
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return;
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}
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DPRINTF(("ums_attach: X %d/%d\n",
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sc->sc_loc_x.pos, sc->sc_loc_x.size));
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dx = hid_get_data(ibuf, &sc->sc_loc_x);
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dy = -hid_get_data(ibuf, &sc->sc_loc_y);
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buttons = 0;
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if (hid_get_data(ibuf, &sc->sc_loc_btn1)) buttons |= PS2LBUTMASK;
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if (hid_get_data(ibuf, &sc->sc_loc_btn2)) buttons |= PS2RBUTMASK;
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if (hid_get_data(ibuf, &sc->sc_loc_btn3)) buttons |= PS2MBUTMASK;
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buttons = ((buttons & PS2LBUTMASK) << 2) |
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((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1);
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changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3;
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sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | changed;
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if (dx || dy || changed) {
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/* Update accumulated movements. */
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sc->sc_x += dx;
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sc->sc_y += dy;
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/* Add this event to the queue. */
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buffer[0] = 0x80 | (buttons ^ BUTSTATMASK);
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buffer[1] = dx;
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buffer[2] = dy;
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buffer[3] = buffer[4] = 0;
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(void) b_to_q(buffer, sizeof buffer, &sc->sc_q);
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if (sc->sc_state & UMS_ASLP) {
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sc->sc_state &= ~UMS_ASLP;
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DPRINTFN(5, ("ums_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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umsopen(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 = UMSUNIT(dev);
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struct ums_softc *sc;
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usbd_status r;
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if (unit >= ums_cd.cd_ndevs)
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return ENXIO;
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sc = ums_cd.cd_devs[unit];
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if (!sc)
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return ENXIO;
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DPRINTF(("umsopen: 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 & UMS_OPEN)
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return EBUSY;
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if (clalloc(&sc->sc_q, UMS_BSIZE, 0) == -1)
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return ENOMEM;
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sc->sc_state |= UMS_OPEN;
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sc->sc_status = 0;
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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, &sc->sc_intrpipe, sc,
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sc->sc_ibuf, sc->sc_isize, ums_intr);
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if (r != USBD_NORMAL_COMPLETION) {
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DPRINTF(("umsopen: usbd_open_pipe_intr failed, error=%d\n",r));
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sc->sc_state &= ~UMS_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, ums_disco, sc);
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return 0;
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}
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int
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umsclose(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 ums_softc *sc = ums_cd.cd_devs[UMSUNIT(dev)];
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if (sc->sc_disconnected)
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return (EIO);
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DPRINTF(("umsclose: sc=%p\n", sc));
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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 &= ~UMS_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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umsread(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 ums_softc *sc = ums_cd.cd_devs[UMSUNIT(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[UMS_CHUNK];
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/* Block until mouse activity occured. */
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if (sc->sc_disconnected)
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return (EIO);
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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 |= UMS_ASLP;
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DPRINTFN(5, ("umsread: sleep on %p\n", sc));
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error = tsleep((caddr_t)sc, PZERO | PCATCH, "umsrea", 0);
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DPRINTFN(5, ("umsread: woke, error=%d\n", error));
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if (error) {
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sc->sc_state &= ~UMS_ASLP;
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splx(s);
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return error;
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}
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if (sc->sc_state & UMS_NEEDCLEAR) {
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DPRINTFN(-1,("umsread: clearing stall\n"));
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sc->sc_state &= ~UMS_NEEDCLEAR;
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usbd_clear_endpoint_stall(sc->sc_intrpipe);
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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, ("umsread: 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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umsioctl(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 ums_softc *sc = ums_cd.cd_devs[UMSUNIT(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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umspoll(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 ums_softc *sc = ums_cd.cd_devs[UMSUNIT(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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