1 /* $NetBSD: sx.c,v 1.8 2023/12/20 05:33:18 thorpej 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 1.8 2023/12/20 05:33:18 thorpej Exp $"); 34 35 #include "locators.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 41 #include <uvm/uvm_extern.h> 42 43 #include <sys/bus.h> 44 #include <sparc/dev/sbusvar.h> 45 #include <machine/autoconf.h> 46 #include <machine/cpu.h> 47 #include <machine/ctlreg.h> 48 #include <sparc/sparc/asm.h> 49 #include <sparc/dev/sxvar.h> 50 #include <sparc/dev/sxreg.h> 51 #include "opt_sx.h" 52 53 /* autoconfiguration driver */ 54 static int sx_match(device_t, struct cfdata *, void *); 55 static void sx_attach(device_t, device_t, void *); 56 57 CFATTACH_DECL_NEW(sx, sizeof(struct sx_softc), 58 sx_match, sx_attach, NULL, NULL); 59 60 static struct sx_softc *sx0 = NULL; 61 62 static int 63 sx_match(device_t parent, struct cfdata *cf, void *aux) 64 { 65 struct mainbus_attach_args *ma = aux; 66 67 return (strcmp("SUNW,sx", ma->ma_name) == 0); 68 } 69 70 static void 71 sx_attach(device_t parent, device_t self, void *aux) 72 { 73 struct sx_softc *sc = device_private(self); 74 struct mainbus_attach_args *ma = aux; 75 uint32_t id; 76 int i; 77 #ifdef SX_DEBUG 78 int j; 79 #endif 80 81 printf("\n"); 82 83 sc->sc_dev = self; 84 sc->sc_tag = ma->ma_bustag; 85 sc->sc_uregs = ma->ma_paddr + 0x1000; 86 sc->sc_cnt = 0; 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 overridden 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, SX_DIAG_INIT); 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 } 150 151 void 152 sx_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
Indexes created Sat Sep 20 22:09:52 GMT 2025