1 /* $NetBSD: pcctwo.c,v 1.13 2021/08/07 16:19:13 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Steve C. Woodford. 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 /* 33 * PCCchip2 and MCchip Driver 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: pcctwo.c,v 1.13 2021/08/07 16:19:13 thorpej Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/kernel.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 44 #include <sys/cpu.h> 45 #include <sys/bus.h> 46 47 #include <dev/mvme/pcctworeg.h> 48 #include <dev/mvme/pcctwovar.h> 49 50 /* 51 * Global Pointer to the PCCChip2/MCchip soft state, and chip ID 52 */ 53 struct pcctwo_softc *sys_pcctwo; 54 55 int pcctwoprint(void *, const char *); 56 57 58 /* ARGSUSED */ 59 void 60 pcctwo_init(struct pcctwo_softc *sc, const struct pcctwo_device *pd, int devoff) 61 { 62 struct pcctwo_attach_args npa; 63 u_int8_t cid; 64 65 /* 66 * Fix up the vector base for PCCChip2 Interrupts 67 */ 68 pcc2_reg_write(sc, PCC2REG_VECTOR_BASE, sc->sc_vecbase); 69 70 /* 71 * Enable PCCChip2 Interrupts 72 */ 73 pcc2_reg_write(sc, PCC2REG_GENERAL_CONTROL, 74 pcc2_reg_read(sc, PCC2REG_GENERAL_CONTROL) | PCCTWO_GEN_CTRL_MIEN); 75 76 /* What are we? */ 77 cid = pcc2_reg_read(sc, PCC2REG_CHIP_ID); 78 79 /* 80 * Announce ourselves to the world in general 81 */ 82 if (cid == PCCTWO_CHIP_ID_PCC2) 83 printf(": Peripheral Channel Controller (PCCchip2), Rev %d\n", 84 pcc2_reg_read(sc, PCC2REG_CHIP_REVISION)); 85 else 86 if (cid == PCCTWO_CHIP_ID_MCCHIP) 87 printf(": Memory Controller ASIC (MCchip), Rev %d\n", 88 pcc2_reg_read(sc, PCC2REG_CHIP_REVISION)); 89 90 /* 91 * Attach configured children. 92 */ 93 npa._pa_base = devoff; 94 while (pd->pcc_name != NULL) { 95 /* 96 * Note that IPL is filled in by match function. 97 */ 98 npa.pa_name = pd->pcc_name; 99 npa.pa_ipl = -1; 100 npa.pa_dmat = sc->sc_dmat; 101 npa.pa_bust = sc->sc_bust; 102 npa.pa_offset = pd->pcc_offset + devoff; 103 pd++; 104 105 /* Attach the device if configured. */ 106 (void) config_found(sc->sc_dev, &npa, pcctwoprint, CFARGS_NONE); 107 } 108 } 109 110 int 111 pcctwoprint(void *aux, const char *cp) 112 { 113 struct pcctwo_attach_args *pa; 114 115 pa = aux; 116 117 if (cp) 118 aprint_normal("%s at %s", pa->pa_name, cp); 119 120 aprint_normal(" offset 0x%lx", pa->pa_offset - pa->_pa_base); 121 if (pa->pa_ipl != -1) 122 aprint_normal(" ipl %d", pa->pa_ipl); 123 124 return (UNCONF); 125 } 126 127 /* 128 * pcctwointr_establish: Establish PCCChip2 Interrupt 129 */ 130 void 131 pcctwointr_establish( 132 int vec, 133 int (*hand)(void *), 134 int lvl, 135 void *arg, 136 struct evcnt *evcnt) 137 { 138 int vec2icsr; 139 140 #ifdef DEBUG 141 if (vec < 0 || vec >= PCCTWOV_MAX) { 142 printf("pcctwo: illegal vector offset: 0x%x\n", vec); 143 panic("pcctwointr_establish"); 144 } 145 if (lvl < 1 || lvl > 7) { 146 printf("pcctwo: illegal interrupt level: %d\n", lvl); 147 panic("pcctwointr_establish"); 148 } 149 if (sys_pcctwo->sc_vec2icsr[vec] == -1) { 150 printf("pcctwo: unsupported vector: %d\n", vec); 151 panic("pcctwointr_establish"); 152 } 153 #endif 154 155 vec2icsr = sys_pcctwo->sc_vec2icsr[vec]; 156 pcc2_reg_write(sys_pcctwo, VEC2ICSR_REG(vec2icsr), 0); 157 158 /* Hook the interrupt */ 159 (*sys_pcctwo->sc_isrlink)(sys_pcctwo->sc_isrcookie, hand, arg, 160 lvl, vec + sys_pcctwo->sc_vecbase, evcnt); 161 162 /* Enable it in hardware */ 163 pcc2_reg_write(sys_pcctwo, VEC2ICSR_REG(vec2icsr), 164 VEC2ICSR_INIT(vec2icsr) | lvl); 165 } 166 167 void 168 pcctwointr_disestablish(int vec) 169 { 170 171 #ifdef DEBUG 172 if (vec < 0 || vec >= PCCTWOV_MAX) { 173 printf("pcctwo: illegal vector offset: 0x%x\n", vec); 174 panic("pcctwointr_disestablish"); 175 } 176 if (sys_pcctwo->sc_vec2icsr[vec] == -1) { 177 printf("pcctwo: unsupported vector: %d\n", vec); 178 panic("pcctwointr_establish"); 179 } 180 #endif 181 182 /* Disable it in hardware */ 183 pcc2_reg_write(sys_pcctwo, sys_pcctwo->sc_vec2icsr[vec], 0); 184 185 (*sys_pcctwo->sc_isrunlink)(sys_pcctwo->sc_isrcookie, 186 vec + sys_pcctwo->sc_vecbase); 187 } 188 189 struct evcnt * 190 pcctwointr_evcnt(int lev) 191 { 192 193 return ((*sys_pcctwo->sc_isrevcnt)(sys_pcctwo->sc_isrcookie, lev)); 194 } 195
Indexes created Sun Sep 21 15:09:59 GMT 2025