mirror of
https://github.com/freebsd/freebsd-src
synced 2024-10-23 08:42:53 +00:00
![Nick Hibma](/assets/img/avatar_default.png)
Cleaning up the code: - Declare many functions static - Change variable names to make them more self explanatory - Change usbd_request_handle -> usbd_xfer_handle - Syntactical changes - Remove some unused code - Other KNF changes Interrupt context handling - Change delay to usbd_delay_ms were possible (takes polling mode into account) - Change detection mechanism for interrupt context Add support for pre-allocation DMA-able memory by device driver Add preliminary support for isochronous to the UHCI driver (not for OHCI yet). usb.c, uhci.c, ohci.c - Initial attempt at detachable USB host controllers - Handle the use_polling flag with a lttle more care and only set it if we are cold booting. usb.c, uhci.c ohci.c, usbdi.c usbdi_util.c usb_subr.c - Make sure an aborted pipe is marked as not running. - Start queued request in the right order. - Insert some more DIAGNOSTIC sanity checks. - Remove (almost) unused definitions USBD_XFER_OUT and USBD_XFER_IN. usb.c, usb_subr.c - Add an event mechanism so that a userland process can watch devices come and go. ohci.c - Handle the case when a USB transfer is so long that it crosses two page (4K) boundaries. OHCI cannot do that with a single TD so we make a chain. ulpt.c - Use a bigger buffer when transferring data. - Pre-allocate the DMA buffer. This makes the driver slightly more efficient. - Comment out the GET_DEVICE_ID code, because for some unknown reason it causes printing to fail sometimes. usb.h - Add a macro to extract the isoc type. - Add a macro to check whether the routine has been entered after splusb and if not, complain. usbdi.c - Fix a glitch in dequeueing and aborting requests on interrupt pipes. - Add a flag in the request to determine if the data copying is done by the driver or the usbdi layer.
820 lines
21 KiB
C
820 lines
21 KiB
C
/* $FreeBSD$ */
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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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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (augustss@carlstedt.se) at
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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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/*
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* HID spec: http://www.usb.org/developers/data/usbhid10.pdf
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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/module.h>
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#include <sys/bus.h>
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#include <sys/ioccom.h>
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#include <sys/conf.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/poll.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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#include <machine/mouse.h>
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#ifdef UMS_DEBUG
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#define DPRINTF(x) if (umsdebug) logprintf x
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#define DPRINTFN(n,x) if (umsdebug>(n)) logprintf x
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int umsdebug = 1;
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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 UMSUNIT(s) (minor(s)&0x1f)
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#define MS_TO_TICKS(ms) ((ms) * hz / 1000)
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#define QUEUE_BUFSIZE 400 /* MUST be divisible by 5 _and_ 8 */
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struct ums_softc {
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device_t 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, sc_loc_z;
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struct hid_location *sc_loc_btn;
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struct callout_handle timeout_handle; /* for spurious button ups */
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int sc_enabled;
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int sc_disconnected; /* device is gone */
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int flags; /* device configuration */
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#define UMS_Z 0x01 /* z direction available */
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#define UMS_SPUR_BUT_UP 0x02 /* spurious button up events */
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int nbuttons;
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#define MAX_BUTTONS 7 /* chosen because sc_buttons is u_char */
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u_char qbuf[QUEUE_BUFSIZE]; /* must be divisable by 3&4 */
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u_char dummy[100]; /* XXX just for safety and for now */
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int qcount, qhead, qtail;
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mousehw_t hw;
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mousemode_t mode;
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mousestatus_t status;
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int state;
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# define UMS_ASLEEP 0x01 /* readFromDevice is waiting */
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# define UMS_SELECT 0x02 /* select is waiting */
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struct selinfo rsel; /* process waiting in select */
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dev_t dev; /* specfs */
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};
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#define MOUSE_FLAGS_MASK (HIO_CONST|HIO_RELATIVE)
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#define MOUSE_FLAGS (HIO_RELATIVE)
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static void ums_intr __P((usbd_xfer_handle xfer,
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usbd_private_handle priv, usbd_status status));
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static void ums_add_to_queue __P((struct ums_softc *sc,
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int dx, int dy, int dz, int buttons));
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static void ums_add_to_queue_timeout __P((void *priv));
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static int ums_enable __P((void *));
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static void ums_disable __P((void *));
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static d_open_t ums_open;
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static d_close_t ums_close;
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static d_read_t ums_read;
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static d_ioctl_t ums_ioctl;
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static d_poll_t ums_poll;
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#define UMS_CDEV_MAJOR 111
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static struct cdevsw ums_cdevsw = {
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/* open */ ums_open,
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/* close */ ums_close,
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/* read */ ums_read,
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/* write */ nowrite,
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/* ioctl */ ums_ioctl,
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/* poll */ ums_poll,
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/* mmap */ nommap,
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/* strategy */ nostrategy,
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/* name */ "ums",
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/* maj */ UMS_CDEV_MAJOR,
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/* dump */ nodump,
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/* psize */ nopsize,
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/* flags */ 0,
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/* bmaj */ -1
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};
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USB_DECLARE_DRIVER(ums);
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USB_MATCH(ums)
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{
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USB_MATCH_START(ums, uaa);
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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 err;
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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 || id->bInterfaceClass != UCLASS_HID)
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return (UMATCH_NONE);
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err = usbd_alloc_report_desc(uaa->iface, &desc, &size, M_TEMP);
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if (err)
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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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USB_ATTACH(ums)
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{
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USB_ATTACH_START(ums, sc, uaa);
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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 err;
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char devinfo[1024];
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u_int32_t flags;
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int i;
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struct hid_location loc_btn;
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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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USB_ATTACH_SETUP;
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printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev),
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devinfo, 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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USBDEVNAME(sc->sc_dev));
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USB_ATTACH_ERROR_RETURN;
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}
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DPRINTFN(10,("ums_attach: bLength=%d bDescriptorType=%d "
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"bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
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" bInterval=%d\n",
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ed->bLength, ed->bDescriptorType,
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UE_GET_ADDR(ed->bEndpointAddress),
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UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN ? "in":"out",
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UE_GET_XFERTYPE(ed->bmAttributes),
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UGETW(ed->wMaxPacketSize), ed->bInterval));
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if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
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UE_GET_XFERTYPE(ed->bmAttributes) != UE_INTERRUPT) {
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printf("%s: unexpected endpoint\n",
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USBDEVNAME(sc->sc_dev));
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USB_ATTACH_ERROR_RETURN;
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}
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err = usbd_alloc_report_desc(uaa->iface, &desc, &size, M_TEMP);
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if (err)
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USB_ATTACH_ERROR_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, &flags)) {
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printf("%s: mouse has no X report\n", USBDEVNAME(sc->sc_dev));
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USB_ATTACH_ERROR_RETURN;
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}
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if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
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printf("%s: X report 0x%04x not supported\n",
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USBDEVNAME(sc->sc_dev), flags);
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USB_ATTACH_ERROR_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, &flags)) {
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printf("%s: mouse has no Y report\n", USBDEVNAME(sc->sc_dev));
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USB_ATTACH_ERROR_RETURN;
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}
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if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
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printf("%s: Y report 0x%04x not supported\n",
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USBDEVNAME(sc->sc_dev), flags);
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USB_ATTACH_ERROR_RETURN;
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}
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/* try to guess the Z activator: first check Z, then WHEEL */
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if (hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_Z),
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hid_input, &sc->sc_loc_z, &flags) ||
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hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_WHEEL),
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hid_input, &sc->sc_loc_z, &flags)) {
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if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
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sc->sc_loc_z.size = 0; /* Bad Z coord, ignore it */
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} else {
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sc->flags |= UMS_Z;
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}
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}
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/* figure out the number of buttons */
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for (i = 1; i <= MAX_BUTTONS; i++)
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if (!hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, i),
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hid_input, &loc_btn, 0))
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break;
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sc->nbuttons = i - 1;
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sc->sc_loc_btn = malloc(sizeof(struct hid_location)*sc->nbuttons,
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M_USBDEV, M_NOWAIT);
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if (!sc->sc_loc_btn) {
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printf("%s: no memory\n", USBDEVNAME(sc->sc_dev));
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USB_ATTACH_ERROR_RETURN;
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}
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printf("%s: %d buttons%s\n", USBDEVNAME(sc->sc_dev),
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sc->nbuttons, sc->flags & UMS_Z? " and Z dir." : "");
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for (i = 1; i <= sc->nbuttons; i++)
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hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, i),
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hid_input, &sc->sc_loc_btn[i-1], 0);
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sc->sc_isize = hid_report_size(desc, size, hid_input, &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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printf("%s: no memory\n", USBDEVNAME(sc->sc_dev));
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free(sc->sc_loc_btn, M_USB);
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USB_ATTACH_ERROR_RETURN;
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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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free(desc, M_TEMP);
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#ifdef UMS_DEBUG
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DPRINTF(("ums_attach: sc=%p\n", sc));
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DPRINTF(("ums_attach: X\t%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\t%d/%d\n",
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sc->sc_loc_y.pos, sc->sc_loc_y.size));
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if (sc->flags & UMS_Z)
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DPRINTF(("ums_attach: Z\t%d/%d\n",
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sc->sc_loc_z.pos, sc->sc_loc_z.size));
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for (i = 1; i <= sc->nbuttons; i++) {
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DPRINTF(("ums_attach: B%d\t%d/%d\n",
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i, sc->sc_loc_btn[i-1].pos,sc->sc_loc_btn[i-1].size));
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}
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DPRINTF(("ums_attach: size=%d, id=%d\n", sc->sc_isize, sc->sc_iid));
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#endif
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if (sc->nbuttons > MOUSE_MSC_MAXBUTTON)
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sc->hw.buttons = MOUSE_MSC_MAXBUTTON;
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else
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sc->hw.buttons = sc->nbuttons;
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sc->hw.iftype = MOUSE_IF_USB;
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sc->hw.type = MOUSE_MOUSE;
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sc->hw.model = MOUSE_MODEL_GENERIC;
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sc->hw.hwid = 0;
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sc->mode.protocol = MOUSE_PROTO_MSC;
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sc->mode.rate = -1;
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sc->mode.resolution = MOUSE_RES_UNKNOWN;
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sc->mode.accelfactor = 0;
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sc->mode.level = 0;
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sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
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sc->mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
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sc->mode.syncmask[1] = MOUSE_MSC_SYNC;
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sc->status.flags = 0;
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sc->status.button = sc->status.obutton = 0;
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sc->status.dx = sc->status.dy = sc->status.dz = 0;
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sc->rsel.si_flags = 0;
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sc->rsel.si_pid = 0;
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sc->dev = make_dev(&ums_cdevsw, device_get_unit(self),
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UID_ROOT, GID_OPERATOR,
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0644, "ums%d", device_get_unit(self));
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if (usbd_get_quirks(uaa->device)->uq_flags & UQ_SPUR_BUT_UP) {
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DPRINTF(("%s: Spurious button up events\n",
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USBDEVNAME(sc->sc_dev)));
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sc->flags |= UMS_SPUR_BUT_UP;
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}
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USB_ATTACH_SUCCESS_RETURN;
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}
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static int
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ums_detach(device_t self)
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{
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struct ums_softc *sc = device_get_softc(self);
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if (sc->sc_enabled)
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ums_disable(sc);
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DPRINTF(("%s: disconnected\n", USBDEVNAME(self)));
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free(sc->sc_loc_btn, M_USB);
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free(sc->sc_ibuf, M_USB);
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/*
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* XXX If we wakeup the process here, the device will be gone by
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* the time the process gets a chance to notice. *_close and friends
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* should be fixed to handle this case.
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* Or we should do a delayed detach for this.
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* Does this delay now force tsleep to exit with an error?
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*/
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#if 0
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/* someone waiting for data */
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if (sc->state & UMS_ASLEEP) {
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sc->state &= ~UMS_ASLEEP;
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wakeup(sc);
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}
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if (sc->state & UMS_SELECT) {
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sc->state &= ~UMS_SELECT;
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selwakeup(&sc->rsel);
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}
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#endif
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destroy_dev(sc->dev);
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return 0;
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}
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void
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ums_intr(xfer, addr, status)
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usbd_xfer_handle xfer;
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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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int dx, dy, dz;
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u_char buttons = 0;
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int i;
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#define UMS_BUT(i) ((i) < 3 ? (((i) + 2) % 3) : (i))
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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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usbd_clear_endpoint_stall_async(sc->sc_intrpipe);
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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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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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dz = -hid_get_data(ibuf, &sc->sc_loc_z);
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for (i = 0; i < sc->nbuttons; i++)
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if (hid_get_data(ibuf, &sc->sc_loc_btn[i]))
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buttons |= (1 << UMS_BUT(i));
|
|
|
|
if (dx || dy || dz || (sc->flags & UMS_Z)
|
|
|| buttons != sc->status.button) {
|
|
DPRINTFN(5, ("ums_intr: x:%d y:%d z:%d buttons:0x%x\n",
|
|
dx, dy, dz, buttons));
|
|
|
|
sc->status.button = buttons;
|
|
sc->status.dx += dx;
|
|
sc->status.dy += dy;
|
|
sc->status.dz += dz;
|
|
|
|
/* Discard data in case of full buffer */
|
|
if (sc->qcount == sizeof(sc->qbuf)) {
|
|
DPRINTF(("Buffer full, discarded packet"));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The Qtronix keyboard has a built in PS/2 port for a mouse.
|
|
* The firmware once in a while posts a spurious button up
|
|
* event. This event we ignore by doing a timeout for 50 msecs.
|
|
* If we receive dx=dy=dz=buttons=0 before we add the event to
|
|
* the queue.
|
|
* In any other case we delete the timeout event.
|
|
*/
|
|
if (sc->flags & UMS_SPUR_BUT_UP &&
|
|
dx == 0 && dy == 0 && dz == 0 && buttons == 0) {
|
|
usb_timeout(ums_add_to_queue_timeout, (void *) sc,
|
|
MS_TO_TICKS(50 /*msecs*/), sc->timeout_handle);
|
|
} else {
|
|
usb_untimeout(ums_add_to_queue_timeout, (void *) sc,
|
|
sc->timeout_handle);
|
|
|
|
ums_add_to_queue(sc, dx, dy, dz, buttons);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
ums_add_to_queue_timeout(void *priv)
|
|
{
|
|
struct ums_softc *sc = priv;
|
|
int s;
|
|
|
|
s = splusb();
|
|
ums_add_to_queue(sc, 0, 0, 0, 0);
|
|
splx(s);
|
|
}
|
|
|
|
static void
|
|
ums_add_to_queue(struct ums_softc *sc, int dx, int dy, int dz, int buttons)
|
|
{
|
|
/* Discard data in case of full buffer */
|
|
if (sc->qhead+sc->mode.packetsize > sizeof(sc->qbuf)) {
|
|
DPRINTF(("Buffer full, discarded packet"));
|
|
return;
|
|
}
|
|
|
|
if (dx > 254) dx = 254;
|
|
if (dx < -256) dx = -256;
|
|
if (dy > 254) dy = 254;
|
|
if (dy < -256) dy = -256;
|
|
if (dz > 126) dz = 126;
|
|
if (dz < -128) dz = -128;
|
|
|
|
sc->qbuf[sc->qhead] = sc->mode.syncmask[1];
|
|
sc->qbuf[sc->qhead] |= ~buttons & MOUSE_MSC_BUTTONS;
|
|
sc->qbuf[sc->qhead+1] = dx >> 1;
|
|
sc->qbuf[sc->qhead+2] = dy >> 1;
|
|
sc->qbuf[sc->qhead+3] = dx - (dx >> 1);
|
|
sc->qbuf[sc->qhead+4] = dy - (dy >> 1);
|
|
|
|
if (sc->mode.level == 1) {
|
|
sc->qbuf[sc->qhead+5] = dz >> 1;
|
|
sc->qbuf[sc->qhead+6] = dz - (dz >> 1);
|
|
sc->qbuf[sc->qhead+7] = ((~buttons >> 3)
|
|
& MOUSE_SYS_EXTBUTTONS);
|
|
}
|
|
|
|
sc->qhead += sc->mode.packetsize;
|
|
sc->qcount += sc->mode.packetsize;
|
|
/* wrap round at end of buffer */
|
|
if (sc->qhead >= sizeof(sc->qbuf))
|
|
sc->qhead = 0;
|
|
|
|
/* someone waiting for data */
|
|
if (sc->state & UMS_ASLEEP) {
|
|
sc->state &= ~UMS_ASLEEP;
|
|
wakeup(sc);
|
|
}
|
|
if (sc->state & UMS_SELECT) {
|
|
sc->state &= ~UMS_SELECT;
|
|
selwakeup(&sc->rsel);
|
|
}
|
|
}
|
|
static int
|
|
ums_enable(v)
|
|
void *v;
|
|
{
|
|
struct ums_softc *sc = v;
|
|
|
|
usbd_status err;
|
|
|
|
if (sc->sc_enabled)
|
|
return EBUSY;
|
|
|
|
sc->sc_enabled = 1;
|
|
sc->qcount = 0;
|
|
sc->qhead = sc->qtail = 0;
|
|
sc->status.flags = 0;
|
|
sc->status.button = sc->status.obutton = 0;
|
|
sc->status.dx = sc->status.dy = sc->status.dz = 0;
|
|
|
|
callout_handle_init(&sc->timeout_handle);
|
|
|
|
/* Set up interrupt pipe. */
|
|
err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
|
|
USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc,
|
|
sc->sc_ibuf, sc->sc_isize, ums_intr);
|
|
if (err) {
|
|
DPRINTF(("ums_enable: usbd_open_pipe_intr failed, error=%d\n",
|
|
err));
|
|
sc->sc_enabled = 0;
|
|
return (EIO);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
ums_disable(priv)
|
|
void *priv;
|
|
{
|
|
struct ums_softc *sc = priv;
|
|
|
|
usb_untimeout(ums_add_to_queue_timeout, sc, sc->timeout_handle);
|
|
|
|
/* Disable interrupts. */
|
|
usbd_abort_pipe(sc->sc_intrpipe);
|
|
usbd_close_pipe(sc->sc_intrpipe);
|
|
|
|
sc->sc_enabled = 0;
|
|
|
|
if (sc->qcount != 0)
|
|
DPRINTF(("Discarded %d bytes in queue\n", sc->qcount));
|
|
}
|
|
|
|
static int
|
|
ums_open(dev_t dev, int flag, int fmt, struct proc *p)
|
|
{
|
|
struct ums_softc *sc;
|
|
|
|
USB_GET_SC_OPEN(ums, UMSUNIT(dev), sc);
|
|
|
|
return ums_enable(sc);
|
|
}
|
|
|
|
static int
|
|
ums_close(dev_t dev, int flag, int fmt, struct proc *p)
|
|
{
|
|
struct ums_softc *sc;
|
|
|
|
USB_GET_SC(ums, UMSUNIT(dev), sc);
|
|
|
|
if (!sc)
|
|
return 0;
|
|
|
|
if (sc->sc_enabled)
|
|
ums_disable(sc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ums_read(dev_t dev, struct uio *uio, int flag)
|
|
{
|
|
struct ums_softc *sc;
|
|
int s;
|
|
char buf[sizeof(sc->qbuf)];
|
|
int l = 0;
|
|
int error;
|
|
|
|
USB_GET_SC(ums, UMSUNIT(dev), sc);
|
|
|
|
s = splusb();
|
|
if (!sc) {
|
|
splx(s);
|
|
return EIO;
|
|
}
|
|
|
|
while (sc->qcount == 0 ) {
|
|
if (flag & IO_NDELAY) { /* non-blocking I/O */
|
|
splx(s);
|
|
return EWOULDBLOCK;
|
|
}
|
|
|
|
sc->state |= UMS_ASLEEP; /* blocking I/O */
|
|
error = tsleep(sc, PZERO | PCATCH, "umsrea", 0);
|
|
if (error) {
|
|
splx(s);
|
|
return error;
|
|
} else if (!sc->sc_enabled) {
|
|
splx(s);
|
|
return EINTR;
|
|
}
|
|
/* check whether the device is still there */
|
|
|
|
sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
|
|
if (!sc) {
|
|
splx(s);
|
|
return EIO;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* XXX we could optimise the use of splx/splusb somewhat. The writer
|
|
* process only extends qcount and qtail. We could copy them and use the copies
|
|
* to do the copying out of the queue.
|
|
*/
|
|
|
|
while ((sc->qcount > 0) && (uio->uio_resid > 0)) {
|
|
l = (sc->qcount < uio->uio_resid? sc->qcount:uio->uio_resid);
|
|
if (l > sizeof(buf))
|
|
l = sizeof(buf);
|
|
if (l > sizeof(sc->qbuf) - sc->qtail) /* transfer till end of buf */
|
|
l = sizeof(sc->qbuf) - sc->qtail;
|
|
|
|
splx(s);
|
|
uiomove(&sc->qbuf[sc->qtail], l, uio);
|
|
s = splusb();
|
|
|
|
if ( sc->qcount - l < 0 ) {
|
|
DPRINTF(("qcount below 0, count=%d l=%d\n", sc->qcount, l));
|
|
sc->qcount = l;
|
|
}
|
|
sc->qcount -= l; /* remove the bytes from the buffer */
|
|
sc->qtail = (sc->qtail + l) % sizeof(sc->qbuf);
|
|
}
|
|
splx(s);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ums_poll(dev_t dev, int events, struct proc *p)
|
|
{
|
|
struct ums_softc *sc;
|
|
int revents = 0;
|
|
int s;
|
|
|
|
USB_GET_SC(ums, UMSUNIT(dev), sc);
|
|
|
|
if (!sc)
|
|
return 0;
|
|
|
|
s = splusb();
|
|
if (events & (POLLIN | POLLRDNORM)) {
|
|
if (sc->qcount) {
|
|
revents = events & (POLLIN | POLLRDNORM);
|
|
} else {
|
|
sc->state |= UMS_SELECT;
|
|
selrecord(p, &sc->rsel);
|
|
}
|
|
}
|
|
splx(s);
|
|
|
|
return revents;
|
|
}
|
|
|
|
int
|
|
ums_ioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
|
|
{
|
|
struct ums_softc *sc;
|
|
int error = 0;
|
|
int s;
|
|
mousemode_t mode;
|
|
|
|
USB_GET_SC(ums, UMSUNIT(dev), sc);
|
|
|
|
if (!sc)
|
|
return EIO;
|
|
|
|
switch(cmd) {
|
|
case MOUSE_GETHWINFO:
|
|
*(mousehw_t *)addr = sc->hw;
|
|
break;
|
|
case MOUSE_GETMODE:
|
|
*(mousemode_t *)addr = sc->mode;
|
|
break;
|
|
case MOUSE_SETMODE:
|
|
mode = *(mousemode_t *)addr;
|
|
|
|
if (mode.level == -1)
|
|
/* don't change the current setting */
|
|
;
|
|
else if ((mode.level < 0) || (mode.level > 1))
|
|
return (EINVAL);
|
|
|
|
s = splusb();
|
|
sc->mode.level = mode.level;
|
|
|
|
if (sc->mode.level == 0) {
|
|
if (sc->nbuttons > MOUSE_MSC_MAXBUTTON)
|
|
sc->hw.buttons = MOUSE_MSC_MAXBUTTON;
|
|
else
|
|
sc->hw.buttons = sc->nbuttons;
|
|
sc->mode.protocol = MOUSE_PROTO_MSC;
|
|
sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
|
|
sc->mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
|
|
sc->mode.syncmask[1] = MOUSE_MSC_SYNC;
|
|
} else if (sc->mode.level == 1) {
|
|
if (sc->nbuttons > MOUSE_SYS_MAXBUTTON)
|
|
sc->hw.buttons = MOUSE_SYS_MAXBUTTON;
|
|
else
|
|
sc->hw.buttons = sc->nbuttons;
|
|
sc->mode.protocol = MOUSE_PROTO_SYSMOUSE;
|
|
sc->mode.packetsize = MOUSE_SYS_PACKETSIZE;
|
|
sc->mode.syncmask[0] = MOUSE_SYS_SYNCMASK;
|
|
sc->mode.syncmask[1] = MOUSE_SYS_SYNC;
|
|
}
|
|
|
|
bzero(sc->qbuf, sizeof(sc->qbuf));
|
|
sc->qhead = sc->qtail = sc->qcount = 0;
|
|
splx(s);
|
|
|
|
break;
|
|
case MOUSE_GETLEVEL:
|
|
*(int *)addr = sc->mode.level;
|
|
break;
|
|
case MOUSE_SETLEVEL:
|
|
if (*(int *)addr < 0 || *(int *)addr > 1)
|
|
return (EINVAL);
|
|
|
|
s = splusb();
|
|
sc->mode.level = *(int *)addr;
|
|
|
|
if (sc->mode.level == 0) {
|
|
if (sc->nbuttons > MOUSE_MSC_MAXBUTTON)
|
|
sc->hw.buttons = MOUSE_MSC_MAXBUTTON;
|
|
else
|
|
sc->hw.buttons = sc->nbuttons;
|
|
sc->mode.protocol = MOUSE_PROTO_MSC;
|
|
sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
|
|
sc->mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
|
|
sc->mode.syncmask[1] = MOUSE_MSC_SYNC;
|
|
} else if (sc->mode.level == 1) {
|
|
if (sc->nbuttons > MOUSE_SYS_MAXBUTTON)
|
|
sc->hw.buttons = MOUSE_SYS_MAXBUTTON;
|
|
else
|
|
sc->hw.buttons = sc->nbuttons;
|
|
sc->mode.protocol = MOUSE_PROTO_SYSMOUSE;
|
|
sc->mode.packetsize = MOUSE_SYS_PACKETSIZE;
|
|
sc->mode.syncmask[0] = MOUSE_SYS_SYNCMASK;
|
|
sc->mode.syncmask[1] = MOUSE_SYS_SYNC;
|
|
}
|
|
|
|
bzero(sc->qbuf, sizeof(sc->qbuf));
|
|
sc->qhead = sc->qtail = sc->qcount = 0;
|
|
splx(s);
|
|
|
|
break;
|
|
case MOUSE_GETSTATUS: {
|
|
mousestatus_t *status = (mousestatus_t *) addr;
|
|
|
|
s = splusb();
|
|
*status = sc->status;
|
|
sc->status.obutton = sc->status.button;
|
|
sc->status.button = 0;
|
|
sc->status.dx = sc->status.dy = sc->status.dz = 0;
|
|
splx(s);
|
|
|
|
if (status->dx || status->dy || status->dz)
|
|
status->flags |= MOUSE_POSCHANGED;
|
|
if (status->button != status->obutton)
|
|
status->flags |= MOUSE_BUTTONSCHANGED;
|
|
break;
|
|
}
|
|
default:
|
|
error = ENOTTY;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
DRIVER_MODULE(ums, uhub, ums_driver, ums_devclass, usbd_driver_load, 0);
|