/* $NetBSD: intiovar.h,v 1.15 2024/01/28 17:31:40 thorpej Exp $ */
/*-
* Copyright (c) 1996, 1998, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION 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.
*/
/*
* Autoconfiguration definitions and prototypes for the hp300
* internal i/o space.
*/
#include <machine/bus.h>
#include <machine/cpu.h>
#include <arch/hp300/dev/intioreg.h>
#define INTIO_MOD_LEN 8
/*
* Arguments used to attach a device to the internal i/o space.
*/
struct intio_attach_args {
char ia_modname[INTIO_MOD_LEN]; /* module name */
bus_space_tag_t ia_bst; /* bus space tag */
bus_addr_t ia_addr; /* physical address */
bus_size_t ia_iobase; /* intio iobase */
int ia_ipl; /* interrupt priority level */
};
struct intio_builtins {
const char *ib_modname; /* module name */
bus_size_t ib_offset; /* intio offset */
int ib_ipl; /* interrupt priority level */
uint32_t ib_spumask; /* which machines have it */
};
/*
* Devices such as the HIL and RTC chips are wired in a consistent
* fashion. These routines provide a uniform mechanism for accessing
* the devices that are wired to the machine. Doesn't include
* memory-mapped devices such as framebuffers.
*/
#define WAIT(bst,bsh) \
while (bus_space_read_1(bst,bsh,INTIO_DEV_3xx_STAT) \
& INTIO_DEV_BUSY)
#define DATAWAIT(bst,bsh) \
while (!(bus_space_read_1(bst, bsh, INTIO_DEV_3xx_STAT) \
& INTIO_DEV_DATA_READY))
static inline int
intio_device_readcmd(bus_space_tag_t bst, bus_space_handle_t bsh, int cmd,
uint8_t *datap)
{
uint8_t status;
if (cmd != 0) {
WAIT(bst, bsh);
bus_space_write_1(bst, bsh, INTIO_DEV_3xx_CMD, cmd);
}
do {
DATAWAIT(bst, bsh);
status = bus_space_read_1(bst, bsh, INTIO_DEV_3xx_STAT);
*datap = bus_space_read_1(bst, bsh, INTIO_DEV_3xx_DATA);
} while (((status >> INTIO_DEV_SRSHIFT) & INTIO_DEV_SRMASK)
!= INTIO_DEV_SR_DATAAVAIL);
return (0);
}
static inline int
intio_device_writecmd(bus_space_tag_t bst, bus_space_handle_t bsh,
int cmd, uint8_t *datap, int len)
{
WAIT(bst, bsh);
bus_space_write_1(bst, bsh, INTIO_DEV_3xx_CMD, cmd);
while (len--) {
WAIT(bst, bsh);
bus_space_write_1(bst, bsh, INTIO_DEV_3xx_DATA, *datap++);
}
return (0);
}
static inline int
intio_device_readstate(bus_space_tag_t bst, bus_space_handle_t bsh,
uint8_t *statusp, uint8_t *datap)
{
*statusp = bus_space_read_1(bst, bsh, INTIO_DEV_3xx_STAT);
*datap = bus_space_read_1(bst, bsh, INTIO_DEV_3xx_DATA);
return (0);
}
#undef WAIT
#undef DATAWAIT
#define INTIO_DEVSIZE 4096 /* large enough for all machines */
#define intio_intr_establish(func, arg, ipl, priority) \
intr_establish((func),(arg),(ipl),(priority))
