diff options
Diffstat (limited to 'sys/arch/powerpc/isa/isa_machdep.h')
| -rw-r--r-- | sys/arch/powerpc/isa/isa_machdep.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/sys/arch/powerpc/isa/isa_machdep.h b/sys/arch/powerpc/isa/isa_machdep.h new file mode 100644 index 00000000000..bb2ad834b43 --- /dev/null +++ b/sys/arch/powerpc/isa/isa_machdep.h @@ -0,0 +1,93 @@ +/* $OpenBSD: isa_machdep.h,v 1.1 1997/10/11 11:52:59 pefo Exp $ */ + +/* + * Copyright (c) 1997 Per Fogelstrom + * + * 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 under OpenBSD by + * Per Fogelstrom, Opsycon AB, Sweden. + * 4. The name of the author may not 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 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. + * + */ +#ifndef _ISA_MACHDEP_H_ +#define _ISA_MACHDEP_H_ + +typedef struct p4e_isa_bus *isa_chipset_tag_t; + +/* + * I/O macros to access isa bus ports/memory. + * At the first glance theese macros may seem inefficient. + * However, the cpu executes an instruction every <10 ns + * so the bus is much slower so it doesn't matter, really. + */ +#define isa_outb(x,y) outb(p4e_isa_io.bus_base + (x), y) +#define isa_inb(x) inb(p4e_isa_io.bus_base + (x)) + +struct p4e_isa_bus { + void *ic_data; + + void (*ic_attach_hook) __P((struct device *, struct device *, + struct isabus_attach_args *)); + void *(*ic_intr_establish) __P((isa_chipset_tag_t, int, int, int, + int (*)(void *), void *, char *)); + void (*ic_intr_disestablish) __P((isa_chipset_tag_t, void *)); +}; + + +/* + * Functions provided to machine-independent ISA code. + */ +#define isa_attach_hook(p, s, a) /* \ + (*(a)->iba_ic->ic_attach_hook)((p), (s), (a)) */ +#define isa_intr_establish(c, i, t, l, f, a, w) \ + (*(c)->ic_intr_establish)((c)->ic_data, (i), (t), (l), (f), (a), (w)) +#define isa_intr_disestablish(c, h) \ + (*(c)->ic_intr_disestablish)((c)->ic_data, (h)) + + +/* + * Interrupt control struct used to control the ICU setup. + */ + +struct intrhand { + struct intrhand *ih_next; + int (*ih_fun) __P((void *)); + void *ih_arg; + u_long ih_count; + int ih_level; + int ih_irq; + char *ih_what; +}; + +#define ICU_LEN 16 /* Number of possible interrupt sources */ + +/* + * Let com.c know where our console is! + */ +#define CONADDR (0x2e8) +#define COM_FREQ (1843200 / 3) /* Clocked with 8Mhz instead of 24! */ + +extern void * isabr_intr_establish(isa_chipset_tag_t, int, int, int, int (*ih_fun) __P((void *)), void *, char *); +#endif /* _ISA_MACHDEP_H_ */ |