1 /* $NetBSD: usb_mem.h,v 1.27 2008/06/28 17:42:53 bouyer Exp $ */ 2 /* $FreeBSD: src/sys/dev/usb/usb_mem.h,v 1.9 1999/11/17 22:33:47 n_hibma Exp $ */ 3 4 /* 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart@augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #if defined(__NetBSD__) || defined(__OpenBSD__) 35 typedef struct usb_dma_block { 36 bus_dma_tag_t tag; 37 bus_dmamap_t map; 38 void *kaddr; 39 bus_dma_segment_t segs[1]; 40 int nsegs; 41 size_t size; 42 size_t align; 43 int flags; 44 #define USB_DMA_FULLBLOCK 0x0001 45 #define USB_DMA_RESERVE 0x0002 46 LIST_ENTRY(usb_dma_block) next; 47 } usb_dma_block_t; 48 49 #define DMAADDR(dma, o) ((dma)->block->map->dm_segs[0].ds_addr + (dma)->offs + (o)) 50 #define KERNADDR(dma, o) \ 51 ((void *)((char *)(dma)->block->kaddr + (dma)->offs + (o))) 52 53 usbd_status usb_allocmem(usbd_bus_handle,size_t,size_t, usb_dma_t *); 54 void usb_freemem(usbd_bus_handle, usb_dma_t *); 55 void usb_syncmem(usb_dma_t *, bus_addr_t, bus_size_t, int ops); 56 57 #ifdef __NetBSD__ 58 struct extent; 59 60 struct usb_dma_reserve { 61 bus_dma_tag_t dtag; 62 bus_dmamap_t map; 63 void *vaddr; 64 bus_addr_t paddr; 65 size_t size; 66 struct extent *extent; 67 device_t dv; 68 }; 69 70 #if defined(_KERNEL_OPT) 71 #include "opt_usb_mem_reserve.h" 72 #endif 73 74 #ifndef USB_MEM_RESERVE 75 #define USB_MEM_RESERVE (256 * 1024) 76 #endif 77 78 usbd_status usb_reserve_allocm(struct usb_dma_reserve *, usb_dma_t *, 79 u_int32_t); 80 int usb_setup_reserve(device_t, struct usb_dma_reserve *, bus_dma_tag_t, size_t); 81 void usb_reserve_freem(struct usb_dma_reserve *, usb_dma_t *); 82 83 #endif 84 85 #elif defined(__FreeBSD__) 86 87 /* 88 * FreeBSD does not have special functions for DMA memory, so let's keep it 89 * simple for now. 90 */ 91 92 #include <sys/param.h> 93 #include <sys/systm.h> 94 #include <sys/queue.h> 95 #include <sys/proc.h> 96 #include <sys/bio.h> 97 #include <sys/buf.h> 98 #include <sys/malloc.h> 99 #include <sys/kernel.h> 100 #include <vm/vm.h> 101 #include <vm/pmap.h> 102 103 #include <machine/pmap.h> /* for vtophys */ 104 105 #define usb_allocmem(t,s,a,p) (*(p) = malloc(s, M_USB, M_NOWAIT), (*(p) == NULL? USBD_NOMEM: USBD_NORMAL_COMPLETION)) 106 #define usb_freemem(t,p) (free(*(p), M_USB)) 107 108 #ifdef __alpha__ 109 #define DMAADDR(dma, o) (alpha_XXX_dmamap((vm_offset_t) *(dma) + (o))) 110 #else 111 #define DMAADDR(dma, o) (vtophys(*(dma) + (o))) 112 #endif 113 #define KERNADDR(dma, o) ((void *) ((char *)*(dma) + (o))) 114 #endif /* __FreeBSD__ */ 115 116