sx.c revision 1.4
1/* $NetBSD: sx.c,v 1.4 2019/03/01 02:30:42 macallan Exp $ */ 2 3/*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Michael Lorenz. 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#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: sx.c,v 1.4 2019/03/01 02:30:42 macallan Exp $"); 34 35#include "locators.h" 36 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/device.h> 40#include <sys/malloc.h> 41 42#include <uvm/uvm_extern.h> 43 44#include <sys/bus.h> 45#include <sparc/dev/sbusvar.h> 46#include <machine/autoconf.h> 47#include <machine/cpu.h> 48#include <machine/ctlreg.h> 49#include <sparc/sparc/asm.h> 50#include <sparc/dev/sxvar.h> 51#include <sparc/dev/sxreg.h> 52#include "opt_sx.h" 53 54/* autoconfiguration driver */ 55static int sx_match(device_t, struct cfdata *, void *); 56static void sx_attach(device_t, device_t, void *); 57 58CFATTACH_DECL_NEW(sx, sizeof(struct sx_softc), 59 sx_match, sx_attach, NULL, NULL); 60 61static struct sx_softc *sx0 = NULL; 62 63static int 64sx_match(device_t parent, struct cfdata *cf, void *aux) 65{ 66 struct mainbus_attach_args *ma = aux; 67 68 return (strcmp("SUNW,sx", ma->ma_name) == 0); 69} 70 71static void 72sx_attach(device_t parent, device_t self, void *aux) 73{ 74 struct sx_softc *sc = device_private(self); 75 struct mainbus_attach_args *ma = aux; 76 uint32_t id; 77 int i; 78#ifdef SX_DEBUG 79 int j; 80#endif 81 82 printf("\n"); 83 84 sc->sc_dev = self; 85 sc->sc_tag = ma->ma_bustag; 86 sc->sc_uregs = ma->ma_paddr + 0x1000; 87 88 if (bus_space_map(sc->sc_tag, ma->ma_paddr, 0x1000, 0, &sc->sc_regh)) { 89 aprint_error_dev(self, "failed to map registers\n"); 90 return; 91 } 92 93 id = sx_read(sc, SX_ID); 94 aprint_normal_dev(self, "architecture rev. %d chip rev. %d\n", 95 (id & SX_ARCHITECTURE_MASK), 96 (id & SX_CHIP_REVISION) >> 3); 97 98 /* stop the processor */ 99 sx_write(sc, SX_CONTROL_STATUS, 0); 100 /* initialize control registers, clear errors etc. */ 101 sx_write(sc, SX_R0_INIT, 0); 102 sx_write(sc, SX_ERROR, 0); 103 /* default, to be overriden once cgfourteen takes over */ 104 sx_write(sc, SX_PAGE_BOUND_LOWER, 0xfc000000); 105 /* cg14 takes up the whole 64MB chunk */ 106 sx_write(sc, SX_PAGE_BOUND_UPPER, 0xffffffff); 107 sx_write(sc, SX_DIAGNOSTICS, 0); 108 sx_write(sc, SX_PLANEMASK, 0xffffffff); 109 110 /* 111 * initialize all other registers 112 * use the direct port since the processor is stopped 113 */ 114 for (i = 4; i < 0x200; i += 4) 115 sx_write(sc, SX_DIRECT_R0 + i, 0); 116 117 /* ... and start the processor again */ 118 sx_write(sc, SX_CONTROL_STATUS, SX_PB | SX_GO); 119 120 sx0 = sc; 121 122#ifdef SX_DEBUG 123 sta(0xfc000000, ASI_SX, SX_LD(8, 31, 0)); 124 for (i = 1; i < 60; i++) 125 sta(0xfc000000 + (i * 1280), ASI_SX, SX_ST(8, 31, 0)); 126 for (i = 900; i < 1000; i++) 127 sta(0xfc000000 + (i * 1280) + 600, ASI_SX, SX_ST(0, 31, 0)); 128 129 for (i = 0; i < 0x30; i+= 16) { 130 printf("%08x:", i); 131 for (j = 0; j < 16; j += 4) { 132 if ((i + j) > 0x28) continue; 133 printf(" %08x", 134 bus_space_read_4(sc->sc_tag, sc->sc_regh, i + j)); 135 } 136 printf("\n"); 137 } 138 printf("registers:\n"); 139 for (i = 0x300; i < 0x500; i+= 16) { 140 printf("%08x:", i); 141 for (j = 0; j < 16; j += 4) { 142 printf(" %08x", 143 bus_space_read_4(sc->sc_tag, sc->sc_regh, 144 i + j)); 145 } 146 printf("\n"); 147 } 148#endif 149} 150 151void 152sx_dump(void) 153{ 154 if (sx0 == NULL) 155 return; 156 printf("SX STATUS: %08x\n", 157 bus_space_read_4(sx0->sc_tag, sx0->sc_regh, SX_CONTROL_STATUS)); 158 printf("SX ERROR : %08x\n", 159 bus_space_read_4(sx0->sc_tag, sx0->sc_regh, SX_ERROR)); 160 printf("SX DIAG : %08x\n", 161 bus_space_read_4(sx0->sc_tag, sx0->sc_regh, SX_DIAGNOSTICS)); 162} 163