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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