Pull thorpej-bus-dma branch into mainline.
This commit is contained in:
thorpej
parent
f766c4fe95
commit
7a15aef7ea
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@ -1,8 +1,44 @@
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/* $NetBSD: bus.h,v 1.7 1996/12/02 05:35:13 thorpej Exp $ */
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/* $NetBSD: bus.h,v 1.8 1997/06/06 23:24:31 thorpej Exp $ */
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/*-
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* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1996 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1996 Jason R. Thorpe. All rights reserved.
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* Copyright (c) 1996 Christopher G. Demetriou. 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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@ -413,7 +449,70 @@ void bus_space_free __P((bus_space_tag_t t, bus_space_handle_t bsh,
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* by tag/handle/offset `count' times.
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*/
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/* XXX IMPLEMENT bus_space_set_multi_N() XXX */
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static __inline void bus_space_set_multi_1 __P((bus_space_tag_t,
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bus_space_handle_t, bus_size_t, u_int8_t, size_t));
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static __inline void bus_space_set_multi_2 __P((bus_space_tag_t,
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bus_space_handle_t, bus_size_t, u_int16_t, size_t));
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static __inline void bus_space_set_multi_4 __P((bus_space_tag_t,
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bus_space_handle_t, bus_size_t, u_int32_t, size_t));
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static __inline void
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bus_space_set_multi_1(t, h, o, v, c)
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bus_space_tag_t t;
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bus_space_handle_t h;
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bus_size_t o;
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u_int8_t v;
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size_t c;
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{
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bus_addr_t addr = h + o;
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if (t == I386_BUS_SPACE_IO)
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while (c--)
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outb(addr, v);
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else
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while (c--)
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*(volatile u_int8_t *)(addr) = v;
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}
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static __inline void
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bus_space_set_multi_2(t, h, o, v, c)
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bus_space_tag_t t;
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bus_space_handle_t h;
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bus_size_t o;
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u_int16_t v;
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size_t c;
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{
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bus_addr_t addr = h + o;
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if (t == I386_BUS_SPACE_IO)
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while (c--)
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outw(addr, v);
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else
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while (c--)
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*(volatile u_int16_t *)(addr) = v;
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}
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static __inline void
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bus_space_set_multi_4(t, h, o, v, c)
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bus_space_tag_t t;
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bus_space_handle_t h;
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bus_size_t o;
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u_int32_t v;
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size_t c;
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{
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bus_addr_t addr = h + o;
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if (t == I386_BUS_SPACE_IO)
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while (c--)
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outl(addr, v);
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else
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while (c--)
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*(volatile u_int32_t *)(addr) = v;
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}
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#if 0 /* Cause a link error for bus_space_set_multi_8 */
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#define bus_space_set_multi_8 !!! bus_space_set_multi_8 unimplemented !!!
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#endif
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/*
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* void bus_space_set_region_N __P((bus_space_tag_t tag,
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@ -424,7 +523,70 @@ void bus_space_free __P((bus_space_tag_t t, bus_space_handle_t bsh,
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* by tag/handle starting at `offset'.
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*/
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/* XXX IMPLEMENT bus_space_set_region_N() XXX */
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static __inline void bus_space_set_region_1 __P((bus_space_tag_t,
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bus_space_handle_t, bus_size_t, u_int8_t, size_t));
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static __inline void bus_space_set_region_2 __P((bus_space_tag_t,
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bus_space_handle_t, bus_size_t, u_int16_t, size_t));
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static __inline void bus_space_set_region_4 __P((bus_space_tag_t,
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bus_space_handle_t, bus_size_t, u_int32_t, size_t));
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static __inline void
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bus_space_set_region_1(t, h, o, v, c)
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bus_space_tag_t t;
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bus_space_handle_t h;
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bus_size_t o;
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u_int8_t v;
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size_t c;
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{
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bus_addr_t addr = h + o;
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if (t == I386_BUS_SPACE_IO)
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for (; c != 0; c--, addr++)
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outb(addr, v);
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else
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for (; c != 0; c--, addr++)
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*(volatile u_int8_t *)(addr) = v;
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}
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static __inline void
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bus_space_set_region_2(t, h, o, v, c)
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bus_space_tag_t t;
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bus_space_handle_t h;
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bus_size_t o;
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u_int16_t v;
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size_t c;
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{
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bus_addr_t addr = h + o;
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if (t == I386_BUS_SPACE_IO)
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for (; c != 0; c--, addr += 2)
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outw(addr, v);
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else
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for (; c != 0; c--, addr += 2)
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*(volatile u_int16_t *)(addr) = v;
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}
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static __inline void
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bus_space_set_region_4(t, h, o, v, c)
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bus_space_tag_t t;
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bus_space_handle_t h;
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bus_size_t o;
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u_int32_t v;
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size_t c;
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{
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bus_addr_t addr = h + o;
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if (t == I386_BUS_SPACE_IO)
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for (; c != 0; c--, addr += 4)
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outl(addr, v);
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else
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for (; c != 0; c--, addr += 4)
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*(volatile u_int32_t *)(addr) = v;
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}
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#if 0 /* Cause a link error for bus_space_set_region_8 */
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#define bus_space_set_region_8 !!! bus_space_set_region_8 unimplemented !!!
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#endif
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/*
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* void bus_space_copy_N __P((bus_space_tag_t tag,
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@ -436,7 +598,82 @@ void bus_space_free __P((bus_space_tag_t t, bus_space_handle_t bsh,
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* at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
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*/
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/* XXX IMPLEMENT bus_space_copy_N() XXX */
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static __inline void bus_space_copy_1 __P((bus_space_tag_t,
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bus_space_handle_t, bus_size_t, bus_space_handle_t,
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bus_size_t, size_t));
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static __inline void bus_space_copy_2 __P((bus_space_tag_t,
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bus_space_handle_t, bus_size_t, bus_space_handle_t,
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bus_size_t, size_t));
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static __inline void bus_space_copy_4 __P((bus_space_tag_t,
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bus_space_handle_t, bus_size_t, bus_space_handle_t,
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bus_size_t, size_t));
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static __inline void
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bus_space_copy_1(t, h1, o1, h2, o2, c)
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bus_space_tag_t t;
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bus_space_handle_t h1;
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bus_size_t o1;
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bus_space_handle_t h2;
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bus_size_t o2;
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size_t c;
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{
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bus_addr_t addr1 = h1 + o1;
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bus_addr_t addr2 = h2 + o2;
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if (t == I386_BUS_SPACE_IO)
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for (; c != 0; c--, addr1++, addr2++)
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outb(addr2, inb(addr1));
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else
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for (; c != 0; c--, addr1++, addr2++)
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*(volatile u_int8_t *)(addr2) =
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*(volatile u_int8_t *)(addr1);
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}
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static __inline void
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bus_space_copy_2(t, h1, o1, h2, o2, c)
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bus_space_tag_t t;
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bus_space_handle_t h1;
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bus_size_t o1;
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bus_space_handle_t h2;
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bus_size_t o2;
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size_t c;
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{
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bus_addr_t addr1 = h1 + o1;
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bus_addr_t addr2 = h2 + o2;
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if (t == I386_BUS_SPACE_IO)
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for (; c != 0; c--, addr1 += 2, addr2 += 2)
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outw(addr2, inw(addr1));
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else
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for (; c != 0; c--, addr1 += 2, addr2 += 2)
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*(volatile u_int16_t *)(addr2) =
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*(volatile u_int16_t *)(addr1);
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}
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static __inline void
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bus_space_copy_4(t, h1, o1, h2, o2, c)
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bus_space_tag_t t;
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bus_space_handle_t h1;
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bus_size_t o1;
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bus_space_handle_t h2;
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bus_size_t o2;
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size_t c;
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{
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bus_addr_t addr1 = h1 + o1;
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bus_addr_t addr2 = h2 + o2;
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if (t == I386_BUS_SPACE_IO)
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for (; c != 0; c--, addr1 += 4, addr2 += 4)
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outl(addr2, inl(addr1));
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else
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for (; c != 0; c--, addr1 += 4, addr2 += 4)
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*(volatile u_int32_t *)(addr2) =
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*(volatile u_int32_t *)(addr1);
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}
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#if 0 /* Cause a link error for bus_space_copy_8 */
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#define bus_space_copy_8 !!! bus_space_copy_8 unimplemented !!!
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#endif
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/*
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* Bus read/write barrier methods.
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@ -453,4 +690,175 @@ void bus_space_free __P((bus_space_tag_t t, bus_space_handle_t bsh,
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#define BUS_BARRIER_READ 0x01 /* force read barrier */
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#define BUS_BARRIER_WRITE 0x02 /* force write barrier */
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/*
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* Flags used in various bus DMA methods.
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*/
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#define BUS_DMA_WAITOK 0x00 /* safe to sleep (pseudo-flag) */
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#define BUS_DMA_NOWAIT 0x01 /* not safe to sleep */
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#define BUS_DMA_ALLOCNOW 0x02 /* perform resource allocation now */
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#define BUS_DMAMEM_NOSYNC 0x04 /* map memory to not require sync */
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#define BUS_DMA_BUS1 0x10 /* placeholders for bus functions... */
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#define BUS_DMA_BUS2 0x20
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#define BUS_DMA_BUS3 0x40
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#define BUS_DMA_BUS4 0x80
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/* Forwards needed by prototypes below. */
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struct mbuf;
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struct uio;
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/*
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* bus_dmasync_op_t
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*
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* Operations performed by bus_dmamap_sync().
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*/
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typedef enum {
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BUS_DMASYNC_PREREAD,
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BUS_DMASYNC_POSTREAD,
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BUS_DMASYNC_PREWRITE,
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BUS_DMASYNC_POSTWRITE,
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} bus_dmasync_op_t;
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typedef struct i386_bus_dma_tag *bus_dma_tag_t;
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typedef struct i386_bus_dmamap *bus_dmamap_t;
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/*
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* bus_dma_segment_t
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*
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* Describes a single contiguous DMA transaction. Values
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* are suitable for programming into DMA registers.
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*/
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struct i386_bus_dma_segment {
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bus_addr_t ds_addr; /* DMA address */
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bus_size_t ds_len; /* length of transfer */
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};
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typedef struct i386_bus_dma_segment bus_dma_segment_t;
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/*
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* bus_dma_tag_t
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*
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* A machine-dependent opaque type describing the implementation of
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* DMA for a given bus.
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*/
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struct i386_bus_dma_tag {
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void *_cookie; /* cookie used in the guts */
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/*
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* DMA mapping methods.
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*/
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int (*_dmamap_create) __P((bus_dma_tag_t, bus_size_t, int,
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bus_size_t, bus_size_t, int, bus_dmamap_t *));
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void (*_dmamap_destroy) __P((bus_dma_tag_t, bus_dmamap_t));
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int (*_dmamap_load) __P((bus_dma_tag_t, bus_dmamap_t, void *,
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bus_size_t, struct proc *, int));
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int (*_dmamap_load_mbuf) __P((bus_dma_tag_t, bus_dmamap_t,
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struct mbuf *, int));
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int (*_dmamap_load_uio) __P((bus_dma_tag_t, bus_dmamap_t,
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struct uio *, int));
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int (*_dmamap_load_raw) __P((bus_dma_tag_t, bus_dmamap_t,
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bus_dma_segment_t *, int, bus_size_t, int));
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void (*_dmamap_unload) __P((bus_dma_tag_t, bus_dmamap_t));
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void (*_dmamap_sync) __P((bus_dma_tag_t, bus_dmamap_t,
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bus_dmasync_op_t));
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/*
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* DMA memory utility functions.
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*/
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int (*_dmamem_alloc) __P((bus_dma_tag_t, bus_size_t, bus_size_t,
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bus_size_t, bus_dma_segment_t *, int, int *, int));
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void (*_dmamem_free) __P((bus_dma_tag_t,
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bus_dma_segment_t *, int));
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int (*_dmamem_map) __P((bus_dma_tag_t, bus_dma_segment_t *,
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int, size_t, caddr_t *, int));
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void (*_dmamem_unmap) __P((bus_dma_tag_t, caddr_t, size_t));
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int (*_dmamem_mmap) __P((bus_dma_tag_t, bus_dma_segment_t *,
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int, int, int, int));
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};
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#define bus_dmamap_create(t, s, n, m, b, f, p) \
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(*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p))
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#define bus_dmamap_destroy(t, p) \
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(*(t)->_dmamap_destroy)((t), (p))
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#define bus_dmamap_load(t, m, b, s, p, f) \
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(*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f))
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#define bus_dmamap_load_mbuf(t, m, b, f) \
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(*(t)->_dmamap_load_mbuf)((t), (m), (b), (f))
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#define bus_dmamap_load_uio(t, m, u, f) \
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(*(t)->_dmamap_load_uio)((t), (m), (u), (f))
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#define bus_dmamap_load_raw(t, m, sg, n, s, f) \
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(*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f))
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#define bus_dmamap_unload(t, p) \
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(*(t)->_dmamap_unload)((t), (p))
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#define bus_dmamap_sync(t, p, o) \
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(void)((t)->_dmamap_sync ? \
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(*(t)->_dmamap_sync)((t), (p), (o)) : (void)0)
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#define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \
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(*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f))
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#define bus_dmamem_free(t, sg, n) \
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(*(t)->_dmamem_free)((t), (sg), (n))
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#define bus_dmamem_map(t, sg, n, s, k, f) \
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(*(t)->_dmamem_map)((t), (sg), (n), (s), (k), (f))
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#define bus_dmamem_unmap(t, k, s) \
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(*(t)->_dmamem_unmap)((t), (k), (s))
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#define bus_dmamem_mmap(t, sg, n, o, p, f) \
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(*(t)->_dmamem_mmap)((t), (sg), (n), (o), (p), (f))
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/*
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* bus_dmamap_t
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*
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* Describes a DMA mapping.
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*/
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struct i386_bus_dmamap {
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/*
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* PRIVATE MEMBERS: not for use my machine-independent code.
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*/
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bus_size_t _dm_size; /* largest DMA transfer mappable */
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int _dm_segcnt; /* number of segs this map can map */
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bus_size_t _dm_maxsegsz; /* largest possible segment */
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bus_size_t _dm_boundary; /* don't cross this */
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int _dm_flags; /* misc. flags */
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|
||||
void *_dm_cookie; /* cookie for bus-specific functions */
|
||||
|
||||
/*
|
||||
* PUBLIC MEMBERS: these are used by machine-independent code.
|
||||
*/
|
||||
int dm_nsegs; /* # valid segments in mapping */
|
||||
bus_dma_segment_t dm_segs[1]; /* segments; variable length */
|
||||
};
|
||||
|
||||
#ifdef _I386_BUS_DMA_PRIVATE
|
||||
int _bus_dmamap_create __P((bus_dma_tag_t, bus_size_t, int, bus_size_t,
|
||||
bus_size_t, int, bus_dmamap_t *));
|
||||
void _bus_dmamap_destroy __P((bus_dma_tag_t, bus_dmamap_t));
|
||||
int _bus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *,
|
||||
bus_size_t, struct proc *, int));
|
||||
int _bus_dmamap_load_mbuf __P((bus_dma_tag_t, bus_dmamap_t,
|
||||
struct mbuf *, int));
|
||||
int _bus_dmamap_load_uio __P((bus_dma_tag_t, bus_dmamap_t,
|
||||
struct uio *, int));
|
||||
int _bus_dmamap_load_raw __P((bus_dma_tag_t, bus_dmamap_t,
|
||||
bus_dma_segment_t *, int, bus_size_t, int));
|
||||
void _bus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t));
|
||||
void _bus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_dmasync_op_t));
|
||||
|
||||
int _bus_dmamem_alloc __P((bus_dma_tag_t tag, bus_size_t size,
|
||||
bus_size_t alignment, bus_size_t boundary,
|
||||
bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags));
|
||||
void _bus_dmamem_free __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
||||
int nsegs));
|
||||
int _bus_dmamem_map __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
||||
int nsegs, size_t size, caddr_t *kvap, int flags));
|
||||
void _bus_dmamem_unmap __P((bus_dma_tag_t tag, caddr_t kva,
|
||||
size_t size));
|
||||
int _bus_dmamem_mmap __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
||||
int nsegs, int off, int prot, int flags));
|
||||
|
||||
int _bus_dmamem_alloc_range __P((bus_dma_tag_t tag, bus_size_t size,
|
||||
bus_size_t alignment, bus_size_t boundary,
|
||||
bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags,
|
||||
vm_offset_t low, vm_offset_t high));
|
||||
#endif /* _I386_BUS_DMA_PRIVATE */
|
||||
|
||||
#endif /* _I386_BUS_H_ */
|
||||
|
|
|
|||
Loading…
Reference in New Issue