1 /* $NetBSD: sbusvar.h,v 1.26 2008/05/17 18:09:03 macallan Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _SBUS_VAR_H 33 #define _SBUS_VAR_H 34 35 #if defined(_KERNEL_OPT) && (defined(__sparc__) || defined(__sparc64__)) 36 #include "opt_sparc_arch.h" 37 #endif 38 39 #include <machine/bsd_openprom.h> 40 41 struct sbus_softc; 42 43 /* 44 * S-bus variables. 45 */ 46 struct sbusdev { 47 device_t sd_dev; /* backpointer to generic */ 48 struct sbusdev *sd_bchain; /* forward link in bus chain */ 49 void (*sd_reset)(device_t); 50 }; 51 52 typedef u_int32_t sbus_slot_t; 53 typedef u_int32_t sbus_offset_t; 54 55 /* 56 * Sbus driver attach arguments. 57 */ 58 struct sbus_attach_args { 59 int sa_placeholder; /* for obio attach args sharing */ 60 bus_space_tag_t sa_bustag; 61 bus_dma_tag_t sa_dmatag; 62 char *sa_name; /* PROM node name */ 63 int sa_node; /* PROM handle */ 64 struct openprom_addr *sa_reg; /* Sbus register space for device */ 65 int sa_nreg; /* Number of Sbus register spaces */ 66 #define sa_slot sa_reg[0].oa_space 67 #define sa_offset sa_reg[0].oa_base 68 #define sa_size sa_reg[0].oa_size 69 70 struct openprom_intr *sa_intr; /* Sbus interrupts for device */ 71 int sa_nintr; /* Number of interrupts */ 72 #define sa_pri sa_intr[0].oi_pri 73 74 u_int32_t *sa_promvaddrs;/* PROM-supplied virtual addresses -- 32-bit */ 75 int sa_npromvaddrs; /* Number of PROM VAs */ 76 #define sa_promvaddr sa_promvaddrs[0] 77 int sa_frequency; /* SBus clockrate */ 78 }; 79 80 /* sbus_attach_internal() is also used from obio.c */ 81 void sbus_attach_common(struct sbus_softc *, const char *, int, 82 const char * const *); 83 int sbus_print(void *, const char *); 84 85 void sbus_establish(struct sbusdev *, device_t); 86 87 int sbus_setup_attach_args( 88 struct sbus_softc *, 89 bus_space_tag_t, 90 bus_dma_tag_t, 91 int, /*node*/ 92 struct sbus_attach_args *); 93 94 void sbus_destroy_attach_args(struct sbus_attach_args *); 95 96 #define sbus_bus_map(tag, slot, offset, sz, flags, hp) \ 97 bus_space_map(tag, BUS_ADDR(slot,offset), sz, flags, hp) 98 bus_addr_t sbus_bus_addr(bus_space_tag_t, u_int, u_int); 99 void sbus_promaddr_to_handle(bus_space_tag_t, u_int, 100 bus_space_handle_t *); 101 102 #if notyet 103 /* variables per Sbus */ 104 struct sbus_softc { 105 device_t sc_dev; /* base device */ 106 bus_space_tag_t sc_bustag; 107 bus_dma_tag_t sc_dmatag; 108 int sc_clockfreq; /* clock frequency (in Hz) */ 109 struct sbusdev *sc_sbdev; /* list of all children */ 110 struct openprom_range *sc_range; 111 int sc_nrange; 112 int sc_burst; /* burst transfer sizes supported */ 113 /* machdep stuff follows here */ 114 int *sc_intr2ipl; /* Interrupt level translation */ 115 }; 116 #endif 117 118 119 /* 120 * PROM-reported DMA burst sizes for the SBus 121 */ 122 #define SBUS_BURST_1 0x1 123 #define SBUS_BURST_2 0x2 124 #define SBUS_BURST_4 0x4 125 #define SBUS_BURST_8 0x8 126 #define SBUS_BURST_16 0x10 127 #define SBUS_BURST_32 0x20 128 #define SBUS_BURST_64 0x40 129 130 /* We use #defined(SUN4*) here while the ports are in flux */ 131 #if defined(SUN4) || defined(SUN4C) || defined(SUN4M) || defined(SUN4D) 132 #include <sparc/dev/sbusvar.h> 133 #elif defined(SUN4U) 134 #include <sparc64/dev/sbusvar.h> 135 #endif 136 137 #endif /* _SBUS_VAR_H */ 138