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Annotation of src/sys/dev/usb/usb_mem.h, Revision 1.27

1.27    ! bouyer      1: /*     $NetBSD: usb_mem.h,v 1.26 2008/05/21 17:19:44 drochner Exp $    */
1.11      augustss    2: /*     $FreeBSD: src/sys/dev/usb/usb_mem.h,v 1.9 1999/11/17 22:33:47 n_hibma Exp $     */
1.1       augustss    3:
                      4: /*
                      5:  * Copyright (c) 1998 The NetBSD Foundation, Inc.
                      6:  * All rights reserved.
                      7:  *
1.2       augustss    8:  * This code is derived from software contributed to The NetBSD Foundation
1.13      augustss    9:  * by Lennart Augustsson (lennart@augustsson.net) at
1.2       augustss   10:  * Carlstedt Research & Technology.
1.1       augustss   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:
1.5       augustss   34: #if defined(__NetBSD__) || defined(__OpenBSD__)
1.6       augustss   35: typedef struct usb_dma_block {
1.1       augustss   36:        bus_dma_tag_t tag;
                     37:        bus_dmamap_t map;
1.24      christos   38:         void *kaddr;
1.1       augustss   39:         bus_dma_segment_t segs[1];
                     40:         int nsegs;
                     41:         size_t size;
                     42:         size_t align;
1.21      fvdl       43:        int flags;
                     44: #define USB_DMA_FULLBLOCK      0x0001
                     45: #define USB_DMA_RESERVE                0x0002
1.6       augustss   46:        LIST_ENTRY(usb_dma_block) next;
1.1       augustss   47: } usb_dma_block_t;
                     48:
1.17      augustss   49: #define DMAADDR(dma, o) ((dma)->block->map->dm_segs[0].ds_addr + (dma)->offs + (o))
1.16      augustss   50: #define KERNADDR(dma, o) \
1.24      christos   51:        ((void *)((char *)(dma)->block->kaddr + (dma)->offs + (o)))
1.1       augustss   52:
1.14      augustss   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 *);
1.27    ! bouyer     55: void           usb_syncmem(usb_dma_t *, bus_addr_t, bus_size_t, int ops);
1.3       augustss   56:
1.21      fvdl       57: #ifdef __NetBSD__
                     58: struct extent;
                     59:
                     60: struct usb_dma_reserve {
                     61:        bus_dma_tag_t dtag;
                     62:        bus_dmamap_t map;
1.24      christos   63:        void *vaddr;
1.21      fvdl       64:        bus_addr_t paddr;
                     65:        size_t size;
                     66:        struct extent *extent;
1.26      drochner   67:        device_t dv;
1.21      fvdl       68: };
                     69:
                     70: #if defined(_KERNEL_OPT)
                     71: #include "opt_usb_mem_reserve.h"
                     72: #endif
                     73:
                     74: #ifndef USB_MEM_RESERVE
1.22      fvdl       75: #define USB_MEM_RESERVE (256 * 1024)
1.21      fvdl       76: #endif
                     77:
                     78: usbd_status usb_reserve_allocm(struct usb_dma_reserve *, usb_dma_t *,
                     79:                                u_int32_t);
1.26      drochner   80: int usb_setup_reserve(device_t, struct usb_dma_reserve *, bus_dma_tag_t, size_t);
1.21      fvdl       81: void usb_reserve_freem(struct usb_dma_reserve *, usb_dma_t *);
                     82:
                     83: #endif
                     84:
1.4       augustss   85: #elif defined(__FreeBSD__)
1.3       augustss   86:
1.19      augustss   87: /*
1.20      wiz        88:  * FreeBSD does not have special functions for DMA memory, so let's keep it
1.3       augustss   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>
1.18      augustss   96: #include <sys/bio.h>
1.3       augustss   97: #include <sys/buf.h>
                     98: #include <sys/malloc.h>
                     99: #include <sys/kernel.h>
                    100: #include <vm/vm.h>
1.18      augustss  101: #include <vm/pmap.h>
                    102:
                    103: #include <machine/pmap.h>       /* for vtophys */
1.3       augustss  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:
1.9       augustss  108: #ifdef __alpha__
1.18      augustss  109: #define DMAADDR(dma, o)        (alpha_XXX_dmamap((vm_offset_t) *(dma) + (o)))
1.9       augustss  110: #else
1.18      augustss  111: #define DMAADDR(dma, o)        (vtophys(*(dma) + (o)))
1.9       augustss  112: #endif
1.16      augustss  113: #define KERNADDR(dma, o)       ((void *) ((char *)*(dma) + (o)))
1.17      augustss  114: #endif /* __FreeBSD__ */
1.3       augustss  115:

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