NetBSD-5.0.2/sys/arch/acorn32/podulebus/podulebus_io.c
/* $NetBSD: podulebus_io.c,v 1.4 2005/12/11 12:16:05 christos Exp $ */
/*
* Copyright (c) 1997 Mark Brinicombe.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mark Brinicombe.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* bus_space I/O functions for podulebus
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: podulebus_io.c,v 1.4 2005/12/11 12:16:05 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <machine/bus.h>
/* Proto types for all the bus_space structure functions */
bs_protos(podulebus);
bs_protos(bs_notimpl);
/* Declare the podulebus bus space tag */
struct bus_space podulebus_bs_tag = {
/* cookie */
(void *) 2, /* Shift to apply to registers */
/* mapping/unmapping */
podulebus_bs_map,
podulebus_bs_unmap,
podulebus_bs_subregion,
/* allocation/deallocation */
podulebus_bs_alloc,
podulebus_bs_free,
/* get kernel virtual address */
0, /* there is no linear mapping */
/* mmap bus space for userland */
bs_notimpl_bs_mmap, /* there is no bus mapping ... well maybe EASI space? */
/* barrier */
podulebus_bs_barrier,
/* read (single) */
podulebus_bs_r_1,
podulebus_bs_r_2,
podulebus_bs_r_4,
bs_notimpl_bs_r_8,
/* read multiple */
podulebus_bs_rm_1,
podulebus_bs_rm_2,
bs_notimpl_bs_rm_4,
bs_notimpl_bs_rm_8,
/* read region */
podulebus_bs_rr_1,
podulebus_bs_rr_2,
bs_notimpl_bs_rr_4,
bs_notimpl_bs_rr_8,
/* write (single) */
podulebus_bs_w_1,
podulebus_bs_w_2,
podulebus_bs_w_4,
bs_notimpl_bs_w_8,
/* write multiple */
podulebus_bs_wm_1,
podulebus_bs_wm_2,
bs_notimpl_bs_wm_4,
bs_notimpl_bs_wm_8,
/* write region */
podulebus_bs_wr_1,
podulebus_bs_wr_2,
bs_notimpl_bs_wr_4,
bs_notimpl_bs_wr_8,
/* set multiple */
bs_notimpl_bs_sm_1,
bs_notimpl_bs_sm_2,
bs_notimpl_bs_sm_4,
bs_notimpl_bs_sm_8,
/* set region */
podulebus_bs_sr_1,
podulebus_bs_sr_2,
bs_notimpl_bs_sr_4,
bs_notimpl_bs_sr_8,
/* copy */
bs_notimpl_bs_c_1,
bs_notimpl_bs_c_2,
bs_notimpl_bs_c_4,
bs_notimpl_bs_c_8,
};
/* bus space functions */
int
podulebus_bs_map(t, bpa, size, cacheable, bshp)
void *t;
bus_addr_t bpa;
bus_size_t size;
int cacheable;
bus_space_handle_t *bshp;
{
/*
* Temporary implementation as all I/O is already mapped etc.
*
* Eventually this function will do the mapping check for multiple maps
*/
*bshp = bpa;
return(0);
}
int
podulebus_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable,
bpap, bshp)
void *t;
bus_addr_t rstart, rend;
bus_size_t size, alignment, boundary;
int cacheable;
bus_addr_t *bpap;
bus_space_handle_t *bshp;
{
panic("podulebus_bs_alloc(): Help!");
}
void
podulebus_bs_unmap(t, bsh, size)
void *t;
bus_space_handle_t bsh;
bus_size_t size;
{
/*
* Temporary implementation
*/
}
void
podulebus_bs_free(t, bsh, size)
void *t;
bus_space_handle_t bsh;
bus_size_t size;
{
panic("podulebus_bs_free(): Help!");
/* podulebus_bs_unmap() does all that we need to do. */
/* podulebus_bs_unmap(t, bsh, size);*/
}
int
podulebus_bs_subregion(t, bsh, offset, size, nbshp)
void *t;
bus_space_handle_t bsh;
bus_size_t offset, size;
bus_space_handle_t *nbshp;
{
*nbshp = bsh + (offset << ((int)t));
return (0);
}
void
podulebus_bs_barrier(t, bsh, offset, len, flags)
void *t;
bus_space_handle_t bsh;
bus_size_t offset, len;
int flags;
{
}
/* Rough-and-ready implementations from arm26 */
void
podulebus_bs_rr_1(void *cookie, bus_space_handle_t bsh,
bus_size_t offset, u_int8_t *datap, bus_size_t count)
{
int i;
for (i = 0; i < count; i++)
datap[i] = podulebus_bs_r_1(cookie, bsh, offset + i);
}
void
podulebus_bs_rr_2(void *cookie, bus_space_handle_t bsh,
bus_size_t offset, u_int16_t *datap, bus_size_t count)
{
int i;
for (i = 0; i < count; i++)
datap[i] = podulebus_bs_r_2(cookie, bsh, offset + i);
}
void
podulebus_bs_wr_1(void *cookie, bus_space_handle_t bsh,
bus_size_t offset, u_int8_t const *datap,
bus_size_t count)
{
int i;
for (i = 0; i < count; i++)
podulebus_bs_w_1(cookie, bsh, offset + i, datap[i]);
}
void
podulebus_bs_wr_2(void *cookie, bus_space_handle_t bsh,
bus_size_t offset, u_int16_t const *datap,
bus_size_t count)
{
int i;
for (i = 0; i < count; i++)
podulebus_bs_w_2(cookie, bsh, offset + i, datap[i]);
}
void
podulebus_bs_sr_1(void *cookie, bus_space_handle_t bsh,
bus_size_t offset, u_int8_t value, bus_size_t count)
{
int i;
for (i = 0; i < count; i++)
podulebus_bs_w_1(cookie, bsh, offset + i, value);
}
void
podulebus_bs_sr_2(void *cookie, bus_space_handle_t bsh,
bus_size_t offset, u_int16_t value, bus_size_t count)
{
int i;
for (i = 0; i < count; i++)
podulebus_bs_w_2(cookie, bsh, offset + i, value);
}