1 /* $NetBSD: pckbc_isa.c,v 1.27 2022/09/25 17:11:48 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1998 5 * Matthias Drochner. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: pckbc_isa.c,v 1.27 2022/09/25 17:11:48 thorpej Exp $"); 30 31 #include "opt_pckbc.h" 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/proc.h> 37 #include <sys/device.h> 38 #include <sys/kmem.h> 39 #include <sys/errno.h> 40 #include <sys/queue.h> 41 42 #include <sys/bus.h> 43 44 #include <dev/isa/isareg.h> 45 #include <dev/isa/isavar.h> 46 47 #include <dev/ic/i8042reg.h> 48 #include <dev/ic/pckbcvar.h> 49 50 int pckbc_isa_match(device_t, cfdata_t, void *); 51 void pckbc_isa_attach(device_t, device_t, void *); 52 53 struct pckbc_isa_softc { 54 struct pckbc_softc sc_pckbc; 55 56 isa_chipset_tag_t sc_ic; 57 int sc_irq[PCKBC_NSLOTS]; 58 }; 59 60 CFATTACH_DECL_NEW(pckbc_isa, sizeof(struct pckbc_isa_softc), 61 pckbc_isa_match, pckbc_isa_attach, NULL, NULL); 62 63 void pckbc_isa_intr_establish(struct pckbc_softc *, pckbc_slot_t); 64 65 int 66 pckbc_isa_match(device_t parent, cfdata_t match, void *aux) 67 { 68 struct isa_attach_args *ia = aux; 69 bus_space_tag_t iot = ia->ia_iot; 70 bus_space_handle_t ioh_d, ioh_c; 71 int res, ok = 1; 72 73 if (ISA_DIRECT_CONFIG(ia)) 74 return (0); 75 76 /* If values are hardwired to something that they can't be, punt. */ 77 if (ia->ia_nio < 1 || 78 (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && 79 ia->ia_io[0].ir_addr != IO_KBD)) 80 return (0); 81 82 if (ia->ia_niomem > 0 && 83 (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM)) 84 return (0); 85 86 if (ia->ia_nirq < 1 || 87 (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 88 ia->ia_irq[0].ir_irq != 1 /*XXX*/)) 89 return (0); 90 91 if (ia->ia_ndrq > 0 && 92 (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ)) 93 return (0); 94 95 if (pckbc_is_console(iot, IO_KBD) == 0) { 96 struct pckbc_internal t; 97 98 if (bus_space_map(iot, IO_KBD + KBDATAP, 1, 0, &ioh_d)) 99 return (0); 100 if (bus_space_map(iot, IO_KBD + KBCMDP, 1, 0, &ioh_c)) { 101 bus_space_unmap(iot, ioh_d, 1); 102 return (0); 103 } 104 105 memset(&t, 0, sizeof(t)); 106 t.t_iot = iot; 107 t.t_ioh_d = ioh_d; 108 t.t_ioh_c = ioh_c; 109 110 /* flush KBC */ 111 (void) pckbc_poll_data1(&t, PCKBC_KBD_SLOT); 112 113 /* KBC selftest */ 114 if (pckbc_send_cmd(iot, ioh_c, KBC_SELFTEST) == 0) { 115 ok = 0; 116 goto out; 117 } 118 res = pckbc_poll_data1(&t, PCKBC_KBD_SLOT); 119 #ifndef PCKBCNOTEST 120 if (res != 0x55) { 121 #ifdef PCKBCDEBUG 122 aprint_verbose("kbc selftest: %x\n", res); 123 #endif 124 ok = 0; 125 } 126 #else 127 __USE(res); 128 #endif /* PCKBCNOTEST */ 129 out: 130 bus_space_unmap(iot, ioh_d, 1); 131 bus_space_unmap(iot, ioh_c, 1); 132 } 133 134 if (ok) { 135 ia->ia_io[0].ir_addr = IO_KBD; 136 ia->ia_io[0].ir_size = 5; 137 ia->ia_nio = 1; 138 139 ia->ia_niomem = 0; 140 ia->ia_nirq = 0; 141 ia->ia_ndrq = 0; 142 } 143 return (ok); 144 } 145 146 void 147 pckbc_isa_attach(device_t parent, device_t self, void *aux) 148 { 149 struct pckbc_isa_softc *isc = device_private(self); 150 struct pckbc_softc *sc = &isc->sc_pckbc; 151 struct isa_attach_args *ia = aux; 152 struct pckbc_internal *t; 153 bus_space_tag_t iot; 154 bus_space_handle_t ioh_d, ioh_c; 155 156 sc->sc_dv = self; 157 isc->sc_ic = ia->ia_ic; 158 iot = ia->ia_iot; 159 160 switch (ia->ia_nirq) { 161 case 1: 162 /* Both channels use the same IRQ. */ 163 isc->sc_irq[PCKBC_KBD_SLOT] = 164 isc->sc_irq[PCKBC_AUX_SLOT] = ia->ia_irq[0].ir_irq; 165 break; 166 167 case 2: 168 /* First IRQ is kbd, second IRQ is aux port. */ 169 isc->sc_irq[PCKBC_KBD_SLOT] = ia->ia_irq[0].ir_irq; 170 isc->sc_irq[PCKBC_AUX_SLOT] = ia->ia_irq[1].ir_irq; 171 break; 172 173 default: 174 /* Set up IRQs for "normal" ISA. */ 175 isc->sc_irq[PCKBC_KBD_SLOT] = 1; 176 isc->sc_irq[PCKBC_AUX_SLOT] = 12; 177 break; 178 } 179 180 sc->intr_establish = pckbc_isa_intr_establish; 181 182 if (pckbc_is_console(iot, IO_KBD)) { 183 t = &pckbc_consdata; 184 ioh_d = t->t_ioh_d; 185 ioh_c = t->t_ioh_c; 186 pckbc_console_attached = 1; 187 /* t->t_cmdbyte was initialized by cnattach */ 188 } else { 189 if (bus_space_map(iot, IO_KBD + KBDATAP, 1, 0, &ioh_d) || 190 bus_space_map(iot, IO_KBD + KBCMDP, 1, 0, &ioh_c)) 191 panic("pckbc_attach: couldn't map"); 192 193 t = kmem_zalloc(sizeof(*t), KM_SLEEP); 194 t->t_iot = iot; 195 t->t_ioh_d = ioh_d; 196 t->t_ioh_c = ioh_c; 197 t->t_addr = IO_KBD; 198 t->t_cmdbyte = KC8_CPU; /* Enable ports */ 199 callout_init(&t->t_cleanup, 0); 200 } 201 202 t->t_sc = sc; 203 sc->id = t; 204 205 aprint_normal("\n"); 206 207 if (!pmf_device_register(self, NULL, pckbc_resume)) 208 aprint_error_dev(self, "couldn't establish power handler\n"); 209 210 /* Finish off the attach. */ 211 pckbc_attach(sc); 212 } 213 214 void 215 pckbc_isa_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot) 216 { 217 struct pckbc_isa_softc *isc = (void *) sc; 218 void *rv; 219 220 rv = isa_intr_establish(isc->sc_ic, isc->sc_irq[slot], IST_EDGE, 221 IPL_TTY, pckbcintr, sc); 222 if (rv == NULL) { 223 aprint_error_dev(sc->sc_dv, 224 "unable to establish interrupt for %s slot\n", 225 pckbc_slot_names[slot]); 226 } else { 227 aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n", 228 isc->sc_irq[slot], pckbc_slot_names[slot]); 229 } 230 } 231
Indexes created Sat Sep 20 22:09:52 GMT 2025