0ede76fcec
This patch (as1350) removes all usages of coherent buffers for USB control-request setup-packet buffers. There's no good reason to reserve coherent memory for these things; control requests are hardly ever used in large quantity (the major exception is firmware transfers, and they aren't time-critical). Furthermore, only seven drivers used it. We might as well always use streaming DMA mappings for setup-packet buffers, and remove some extra complexity from usbcore. The DMA-mapping portion of hcd.c is currently in flux. A separate patch will be submitted to remove support for URB_NO_SETUP_DMA_MAP after everything else settles down. The removal should go smoothly, as by then nobody will be using it. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
107 lines
4.4 KiB
C
107 lines
4.4 KiB
C
#ifndef __USBHID_H
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#define __USBHID_H
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/*
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* Copyright (c) 1999 Andreas Gal
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* Copyright (c) 2000-2001 Vojtech Pavlik
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* Copyright (c) 2006 Jiri Kosina
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <linux/timer.h>
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#include <linux/wait.h>
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#include <linux/workqueue.h>
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#include <linux/input.h>
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/* API provided by hid-core.c for USB HID drivers */
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int usbhid_wait_io(struct hid_device* hid);
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void usbhid_close(struct hid_device *hid);
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int usbhid_open(struct hid_device *hid);
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void usbhid_init_reports(struct hid_device *hid);
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void usbhid_submit_report
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(struct hid_device *hid, struct hid_report *report, unsigned char dir);
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int usbhid_get_power(struct hid_device *hid);
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void usbhid_put_power(struct hid_device *hid);
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/* iofl flags */
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#define HID_CTRL_RUNNING 1
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#define HID_OUT_RUNNING 2
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#define HID_IN_RUNNING 3
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#define HID_RESET_PENDING 4
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#define HID_SUSPENDED 5
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#define HID_CLEAR_HALT 6
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#define HID_DISCONNECTED 7
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#define HID_STARTED 8
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#define HID_REPORTED_IDLE 9
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#define HID_KEYS_PRESSED 10
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#define HID_LED_ON 11
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/*
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* USB-specific HID struct, to be pointed to
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* from struct hid_device->driver_data
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*/
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struct usbhid_device {
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struct hid_device *hid; /* pointer to corresponding HID dev */
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struct usb_interface *intf; /* USB interface */
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int ifnum; /* USB interface number */
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unsigned int bufsize; /* URB buffer size */
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struct urb *urbin; /* Input URB */
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char *inbuf; /* Input buffer */
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dma_addr_t inbuf_dma; /* Input buffer dma */
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struct urb *urbctrl; /* Control URB */
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struct usb_ctrlrequest *cr; /* Control request struct */
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struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE]; /* Control fifo */
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unsigned char ctrlhead, ctrltail; /* Control fifo head & tail */
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char *ctrlbuf; /* Control buffer */
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dma_addr_t ctrlbuf_dma; /* Control buffer dma */
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unsigned long last_ctrl; /* record of last output for timeouts */
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struct urb *urbout; /* Output URB */
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struct hid_output_fifo out[HID_CONTROL_FIFO_SIZE]; /* Output pipe fifo */
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unsigned char outhead, outtail; /* Output pipe fifo head & tail */
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char *outbuf; /* Output buffer */
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dma_addr_t outbuf_dma; /* Output buffer dma */
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unsigned long last_out; /* record of last output for timeouts */
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spinlock_t lock; /* fifo spinlock */
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unsigned long iofl; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */
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struct timer_list io_retry; /* Retry timer */
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unsigned long stop_retry; /* Time to give up, in jiffies */
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unsigned int retry_delay; /* Delay length in ms */
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struct work_struct reset_work; /* Task context for resets */
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struct work_struct restart_work; /* waking up for output to be done in a task */
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wait_queue_head_t wait; /* For sleeping */
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int ledcount; /* counting the number of active leds */
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};
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#define hid_to_usb_dev(hid_dev) \
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container_of(hid_dev->dev.parent->parent, struct usb_device, dev)
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#endif
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