1 /* $NetBSD: sx.c,v 1.7 2023/06/13 10:09:31 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 1.7 2023/06/13 10:09:31 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 */ 55 static int sx_match(device_t, struct cfdata *, void *); 56 static void sx_attach(device_t, device_t, void *); 57 58 CFATTACH_DECL_NEW(sx, sizeof(struct sx_softc), 59 sx_match, sx_attach, NULL, NULL); 60 61 static struct sx_softc *sx0 = NULL; 62 63 static int 64 sx_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 71 static void 72 sx_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 sc->sc_cnt = 0; 88 89 if (bus_space_map(sc->sc_tag, ma->ma_paddr, 0x1000, 0, &sc->sc_regh)) { 90 aprint_error_dev(self, "failed to map registers\n"); 91 return; 92 } 93 94 id = sx_read(sc, SX_ID); 95 aprint_normal_dev(self, "architecture rev. %d chip rev. %d\n", 96 (id & SX_ARCHITECTURE_MASK), 97 (id & SX_CHIP_REVISION) >> 3); 98 99 /* stop the processor */ 100 sx_write(sc, SX_CONTROL_STATUS, 0); 101 /* initialize control registers, clear errors etc. */ 102 sx_write(sc, SX_R0_INIT, 0); 103 sx_write(sc, SX_ERROR, 0); 104 /* default, to be overridden once cgfourteen takes over */ 105 sx_write(sc, SX_PAGE_BOUND_LOWER, 0xfc000000); 106 /* cg14 takes up the whole 64MB chunk */ 107 sx_write(sc, SX_PAGE_BOUND_UPPER, 0xffffffff); 108 sx_write(sc, SX_DIAGNOSTICS, SX_DIAG_INIT); 109 sx_write(sc, SX_PLANEMASK, 0xffffffff); 110 111 /* 112 * initialize all other registers 113 * use the direct port since the processor is stopped 114 */ 115 for (i = 4; i < 0x200; i += 4) 116 sx_write(sc, SX_DIRECT_R0 + i, 0); 117 118 /* ... and start the processor again */ 119 sx_write(sc, SX_CONTROL_STATUS, SX_PB | SX_GO); 120 121 sx0 = sc; 122 123 #ifdef SX_DEBUG 124 sta(0xfc000000, ASI_SX, SX_LD(8, 31, 0)); 125 for (i = 1; i < 60; i++) 126 sta(0xfc000000 + (i * 1280), ASI_SX, SX_ST(8, 31, 0)); 127 for (i = 900; i < 1000; i++) 128 sta(0xfc000000 + (i * 1280) + 600, ASI_SX, SX_ST(0, 31, 0)); 129 130 for (i = 0; i < 0x30; i+= 16) { 131 printf("%08x:", i); 132 for (j = 0; j < 16; j += 4) { 133 if ((i + j) > 0x28) continue; 134 printf(" %08x", 135 bus_space_read_4(sc->sc_tag, sc->sc_regh, i + j)); 136 } 137 printf("\n"); 138 } 139 printf("registers:\n"); 140 for (i = 0x300; i < 0x500; i+= 16) { 141 printf("%08x:", i); 142 for (j = 0; j < 16; j += 4) { 143 printf(" %08x", 144 bus_space_read_4(sc->sc_tag, sc->sc_regh, 145 i + j)); 146 } 147 printf("\n"); 148 } 149 #endif 150 } 151 152 void 153 sx_dump(void) 154 { 155 if (sx0 == NULL) 156 return; 157 printf("SX STATUS: %08x\n", 158 bus_space_read_4(sx0->sc_tag, sx0->sc_regh, SX_CONTROL_STATUS)); 159 printf("SX ERROR : %08x\n", 160 bus_space_read_4(sx0->sc_tag, sx0->sc_regh, SX_ERROR)); 161 printf("SX DIAG : %08x\n", 162 bus_space_read_4(sx0->sc_tag, sx0->sc_regh, SX_DIAGNOSTICS)); 163 } 164