289 lines
7.4 KiB
C
289 lines
7.4 KiB
C
/* $NetBSD: jensenio_bus_intio.c,v 1.1 2000/07/12 20:36:08 thorpej Exp $ */
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/*-
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* Copyright (c) 1999 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.
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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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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: jensenio_bus_intio.c,v 1.1 2000/07/12 20:36:08 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <sys/extent.h>
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#include <machine/bus.h>
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#include <dev/eisa/eisavar.h>
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#include <dev/isa/isavar.h>
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#include <alpha/jensenio/jensenioreg.h>
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#include <alpha/jensenio/jenseniovar.h>
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/* mapping/unmapping */
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int jensenio_intio_map(void *, bus_addr_t, bus_size_t, int,
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bus_space_handle_t *, int);
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void jensenio_intio_unmap(void *, bus_space_handle_t,
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bus_size_t, int);
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int jensenio_intio_subregion(void *, bus_space_handle_t,
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bus_size_t, bus_size_t, bus_space_handle_t *);
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/* allocation/deallocation */
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/* Not supported for Internal space */
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/* barrier */
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inline void jensenio_intio_barrier(void *, bus_space_handle_t,
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bus_size_t, bus_size_t, int);
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/* read (single) */
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inline u_int8_t jensenio_intio_read_1(void *, bus_space_handle_t, bus_size_t);
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/* read multiple */
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void jensenio_intio_read_multi_1(void *, bus_space_handle_t,
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bus_size_t, u_int8_t *, bus_size_t);
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/* read region */
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/* Not supported for Internal space */
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/* write (single) */
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inline void jensenio_intio_write_1(void *, bus_space_handle_t,
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bus_size_t, u_int8_t);
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/* write multiple */
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void jensenio_intio_write_multi_1(void *, bus_space_handle_t,
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bus_size_t, const u_int8_t *, bus_size_t);
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/* write region */
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/* Not supported for Internal space */
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/* set multiple */
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void jensenio_intio_set_multi_1(void *, bus_space_handle_t,
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bus_size_t, u_int8_t, bus_size_t);
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/* set region */
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/* Not supported for Internal space */
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/* copy */
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/* Not supported for Internal space */
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void
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jensenio_bus_intio_init(bus_space_tag_t t, void *v)
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{
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/*
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* Initialize the bus space tag.
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*/
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memset(t, 0, sizeof(*t));
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/* cookie */
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t->abs_cookie = v;
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/* mapping/unmapping */
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t->abs_map = jensenio_intio_map;
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t->abs_unmap = jensenio_intio_unmap;
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t->abs_subregion = jensenio_intio_subregion;
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/* barrier */
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t->abs_barrier = jensenio_intio_barrier;
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/* read (single) */
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t->abs_r_1 = jensenio_intio_read_1;
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/* read multiple */
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t->abs_rm_1 = jensenio_intio_read_multi_1;
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/* write (single) */
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t->abs_w_1 = jensenio_intio_write_1;
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/* write multiple */
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t->abs_wm_1 = jensenio_intio_write_multi_1;
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/* set multiple */
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t->abs_sm_1 = jensenio_intio_set_multi_1;
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/*
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* Extent map is already set up.
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*/
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}
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int
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jensenio_intio_map(void *v, bus_addr_t ioaddr, bus_size_t iosize, int flags,
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bus_space_handle_t *iohp, int acct)
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{
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struct jensenio_config *jcp = v;
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int linear = flags & BUS_SPACE_MAP_LINEAR;
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int error;
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/*
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* Can't map i/o space linearly.
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*/
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if (linear)
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return (EOPNOTSUPP);
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if (acct) {
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#ifdef EXTENT_DEBUG
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printf("intio: allocating 0x%lx to 0x%lx\n", ioaddr,
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ioaddr + iosize - 1);
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#endif
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error = extent_alloc_region(jcp->jc_io_ex, ioaddr, iosize,
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EX_NOWAIT | (jcp->jc_mallocsafe ? EX_MALLOCOK : 0));
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if (error) {
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#ifdef EXTENT_DEBUG
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printf("intio: allocation failed (%d)\n", error);
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extent_print(jcp->jc_io_ex);
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#endif
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return (error);
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}
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}
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*iohp = ALPHA_PHYS_TO_K0SEG((ioaddr << 9) + JENSEN_VL82C106);
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return (0);
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}
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void
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jensenio_intio_unmap(void *v, bus_space_handle_t ioh, bus_size_t iosize,
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int acct)
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{
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struct jensenio_config *jcp = v;
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bus_addr_t ioaddr;
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int error;
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if (acct == 0)
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return;
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#ifdef EXTENT_DEBUG
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printf("intio: freeing handle 0x%lx for 0x%lx\n", ioh, iosize);
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#endif
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ioh = ALPHA_K0SEG_TO_PHYS(ioh);
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ioaddr = (ioh - JENSEN_VL82C106) >> 9;
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#ifdef EXTENT_DEBUG
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printf("intio: freeing 0x%lx to 0x%lx\n", ioaddr, ioaddr + iosize - 1);
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#endif
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error = extent_free(jcp->jc_io_ex, ioaddr, iosize,
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EX_NOWAIT | (jcp->jc_mallocsafe ? EX_MALLOCOK : 0));
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if (error) {
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printf("WARNING: could not unmap 0x%lx-0x%lx (error %d)\n",
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ioaddr, ioaddr + iosize - 1, error);
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#ifdef EXTENT_DEBUG
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extent_print(jcp->jc_io_ex);
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#endif
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}
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}
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int
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jensenio_intio_subregion(void *v, bus_space_handle_t ioh, bus_size_t offset,
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bus_size_t size, bus_space_handle_t *nioh)
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{
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*nioh = ioh + (offset << 9);
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return (0);
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}
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inline void
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jensenio_intio_barrier(void *v, bus_space_handle_t h, bus_size_t o,
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bus_size_t l, int f)
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{
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if ((f & BUS_SPACE_BARRIER_READ) != 0)
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alpha_mb();
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else if ((f & BUS_SPACE_BARRIER_WRITE) != 0)
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alpha_wmb();
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}
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inline u_int8_t
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jensenio_intio_read_1(void *v, bus_space_handle_t ioh, bus_size_t off)
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{
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register u_int32_t *port;
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alpha_mb();
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port = (u_int32_t *)(ioh + (off << 9));
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return (*port & 0xff);
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}
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void
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jensenio_intio_read_multi_1(void *v, bus_space_handle_t h, bus_size_t o,
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u_int8_t *a, bus_size_t c)
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{
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while (c-- > 0) {
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jensenio_intio_barrier(v, h, o, sizeof *a,
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BUS_SPACE_BARRIER_READ);
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*a++ = jensenio_intio_read_1(v, h, o);
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}
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}
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inline void
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jensenio_intio_write_1(void *v, bus_space_handle_t ioh, bus_size_t off,
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u_int8_t val)
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{
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register u_int32_t *port;
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port = (u_int32_t *)(ioh + (off << 9));
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*port = val;
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alpha_mb();
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}
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void
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jensenio_intio_write_multi_1(void *v, bus_space_handle_t h, bus_size_t o,
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const u_int8_t *a, bus_size_t c)
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{
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while (c-- > 0) {
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jensenio_intio_write_1(v, h, o, *a++);
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jensenio_intio_barrier(v, h, o, sizeof *a,
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BUS_SPACE_BARRIER_WRITE);
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}
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}
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void
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jensenio_intio_set_multi_1(void *v, bus_space_handle_t h, bus_size_t o,
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u_int8_t val, bus_size_t c)
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{
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while (c-- > 0) {
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jensenio_intio_write_1(v, h, o, val);
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jensenio_intio_barrier(v, h, o, sizeof val,
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BUS_SPACE_BARRIER_WRITE);
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}
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}
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