1 /* $NetBSD: usb_mem.h,v 1.23 2005/12/11 12:24:01 christos 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 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 #if defined(__NetBSD__) || defined(__OpenBSD__) 42 typedef struct usb_dma_block { 43 bus_dma_tag_t tag; 44 bus_dmamap_t map; 45 caddr_t kaddr; 46 bus_dma_segment_t segs[1]; 47 int nsegs; 48 size_t size; 49 size_t align; 50 int flags; 51 #define USB_DMA_FULLBLOCK 0x0001 52 #define USB_DMA_RESERVE 0x0002 53 LIST_ENTRY(usb_dma_block) next; 54 } usb_dma_block_t; 55 56 #define DMAADDR(dma, o) ((dma)->block->map->dm_segs[0].ds_addr + (dma)->offs + (o)) 57 #define KERNADDR(dma, o) \ 58 ((void *)((char *)((dma)->block->kaddr + (dma)->offs) + (o))) 59 60 usbd_status usb_allocmem(usbd_bus_handle,size_t,size_t, usb_dma_t *); 61 void usb_freemem(usbd_bus_handle, usb_dma_t *); 62 63 #ifdef __NetBSD__ 64 struct extent; 65 66 struct usb_dma_reserve { 67 bus_dma_tag_t dtag; 68 bus_dmamap_t map; 69 caddr_t vaddr; 70 bus_addr_t paddr; 71 size_t size; 72 struct extent *extent; 73 void *softc; 74 }; 75 76 #if defined(_KERNEL_OPT) 77 #include "opt_usb_mem_reserve.h" 78 #endif 79 80 #ifndef USB_MEM_RESERVE 81 #define USB_MEM_RESERVE (256 * 1024) 82 #endif 83 84 usbd_status usb_reserve_allocm(struct usb_dma_reserve *, usb_dma_t *, 85 u_int32_t); 86 int usb_setup_reserve(void *, struct usb_dma_reserve *, bus_dma_tag_t, size_t); 87 void usb_reserve_freem(struct usb_dma_reserve *, usb_dma_t *); 88 89 #endif 90 91 #elif defined(__FreeBSD__) 92 93 /* 94 * FreeBSD does not have special functions for DMA memory, so let's keep it 95 * simple for now. 96 */ 97 98 #include <sys/param.h> 99 #include <sys/systm.h> 100 #include <sys/queue.h> 101 #include <sys/proc.h> 102 #include <sys/bio.h> 103 #include <sys/buf.h> 104 #include <sys/malloc.h> 105 #include <sys/kernel.h> 106 #include <vm/vm.h> 107 #include <vm/pmap.h> 108 109 #include <machine/pmap.h> /* for vtophys */ 110 111 #define usb_allocmem(t,s,a,p) (*(p) = malloc(s, M_USB, M_NOWAIT), (*(p) == NULL? USBD_NOMEM: USBD_NORMAL_COMPLETION)) 112 #define usb_freemem(t,p) (free(*(p), M_USB)) 113 114 #ifdef __alpha__ 115 #define DMAADDR(dma, o) (alpha_XXX_dmamap((vm_offset_t) *(dma) + (o))) 116 #else 117 #define DMAADDR(dma, o) (vtophys(*(dma) + (o))) 118 #endif 119 #define KERNADDR(dma, o) ((void *) ((char *)*(dma) + (o))) 120 #endif /* __FreeBSD__ */ 121 122