1/* $NetBSD: tx39uart.c,v 1.17 2021/08/07 16:18:54 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 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: tx39uart.c,v 1.17 2021/08/07 16:18:54 thorpej Exp $"); 34 35#include "opt_tx39uart_debug.h" 36 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/device.h> 40 41#include <machine/bus.h> 42#include <machine/intr.h> 43 44#include <hpcmips/tx/tx39var.h> 45#include <hpcmips/tx/tx39uartvar.h> 46 47#include "locators.h" 48 49int tx39uart_match(device_t, cfdata_t, void *); 50void tx39uart_attach(device_t, device_t, void *); 51int tx39uart_print(void *, const char *); 52int tx39uart_search(device_t, cfdata_t, const int *, void *); 53 54struct tx39uart_softc { 55 tx_chipset_tag_t sc_tc; 56 int sc_enabled; 57}; 58 59CFATTACH_DECL_NEW(tx39uart, sizeof(struct tx39uart_softc), 60 tx39uart_match, tx39uart_attach, NULL, NULL); 61 62int 63tx39uart_match(device_t parent, cfdata_t cf, void *aux) 64{ 65 return ATTACH_LAST; 66} 67 68void 69tx39uart_attach(device_t parent, device_t self, void *aux) 70{ 71 struct txsim_attach_args *ta = aux; 72 struct tx39uart_softc *sc = device_private(self); 73 tx_chipset_tag_t tc; 74 75 printf("\n"); 76 sc->sc_tc = tc = ta->ta_tc; 77 78 config_search(self, NULL, 79 CFARGS(.search = tx39uart_search)); 80} 81 82int 83tx39uart_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 84{ 85 struct tx39uart_softc *sc = device_private(parent); 86 struct tx39uart_attach_args ua; 87 88 ua.ua_tc = sc->sc_tc; 89 ua.ua_slot = cf->cf_loc[TXCOMIFCF_SLOT]; 90 91 if (ua.ua_slot == TXCOMIFCF_SLOT_DEFAULT) { 92 printf("tx39uart_search: wildcarded slot, skipping\n"); 93 return 0; 94 } 95 96 if (!(sc->sc_enabled & (1 << ua.ua_slot)) && /* not attached slot */ 97 config_probe(parent, cf, &ua)) { 98 config_attach(parent, cf, &ua, tx39uart_print, CFARGS_NONE); 99 sc->sc_enabled |= (1 << ua.ua_slot); 100 } 101 102 return 0; 103} 104 105int 106tx39uart_print(void *aux, const char *pnp) 107{ 108 struct tx39uart_attach_args *ua = aux; 109 110 aprint_normal(" slot %d", ua->ua_slot); 111 112 return QUIET; 113} 114