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d2b99310b1
into the FreeBSD boot loader, typically for non-USB aware BIOSes, EFI systems or embedded platforms. This is also useful for out of the system compilation of the FreeBSD USB stack for various purposes. The USB kernel files can now optionally include a global header file which should include all needed definitions required to compile the FreeBSD USB stack. When the global USB header file is included, no other USB header files will be included by default. Add new file containing the USB stack configuration for the FreeBSD loader build. Replace some __FBSDID()'s by /* $FreeBSD$ */ comments. Now all USB files follow the same style. Use cases: - console in loader via USB - loading kernel via USB Discussed with: Hiroki Sato, hrs @ EuroBSDCon
103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef USB_GLOBAL_INCLUDE_FILE
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#include USB_GLOBAL_INCLUDE_FILE
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#else
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#include <sys/stdint.h>
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#include <sys/stddef.h>
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#include <sys/sysctl.h>
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#include <sys/sx.h>
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#include <sys/unistd.h>
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#include <sys/callout.h>
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#include <sys/malloc.h>
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#include <sys/priv.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/usb_dev.h>
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#include <dev/usb/usb_mbuf.h>
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#endif /* USB_GLOBAL_INCLUDE_FILE */
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/*------------------------------------------------------------------------*
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* usb_alloc_mbufs - allocate mbufs to an usbd interface queue
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*
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* Returns:
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* A pointer that should be passed to "free()" when the buffer(s)
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* should be released.
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*------------------------------------------------------------------------*/
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void *
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usb_alloc_mbufs(struct malloc_type *type, struct usb_ifqueue *ifq,
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usb_size_t block_size, uint16_t nblocks)
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{
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struct usb_mbuf *m_ptr;
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uint8_t *data_ptr;
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void *free_ptr = NULL;
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usb_size_t alloc_size;
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/* align data */
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block_size += ((-block_size) & (USB_HOST_ALIGN - 1));
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if (nblocks && block_size) {
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alloc_size = (block_size + sizeof(struct usb_mbuf)) * nblocks;
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free_ptr = malloc(alloc_size, type, M_WAITOK | M_ZERO);
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if (free_ptr == NULL) {
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goto done;
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}
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m_ptr = free_ptr;
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data_ptr = (void *)(m_ptr + nblocks);
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while (nblocks--) {
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m_ptr->cur_data_ptr =
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m_ptr->min_data_ptr = data_ptr;
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m_ptr->cur_data_len =
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m_ptr->max_data_len = block_size;
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USB_IF_ENQUEUE(ifq, m_ptr);
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m_ptr++;
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data_ptr += block_size;
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}
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}
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done:
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return (free_ptr);
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}
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