1 /* $NetBSD: hdlg_pci.c,v 1.6 2025/07/03 19:09:48 andvar Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: hdlg_pci.c,v 1.6 2025/07/03 19:09:48 andvar Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/device.h> 44 45 #include <machine/autoconf.h> 46 #include <sys/bus.h> 47 48 #include <evbarm/hdl_g/hdlgreg.h> 49 #include <evbarm/hdl_g/hdlgvar.h> 50 51 #include <arm/xscale/i80321reg.h> 52 #include <arm/xscale/i80321var.h> 53 54 #include <dev/pci/pcidevs.h> 55 #include <dev/pci/ppbreg.h> 56 57 int hdlg_pci_intr_map(const struct pci_attach_args *, pci_intr_handle_t *); 58 const char *hdlg_pci_intr_string(void *, pci_intr_handle_t, char *, size_t); 59 const struct evcnt *hdlg_pci_intr_evcnt(void *, pci_intr_handle_t); 60 void *hdlg_pci_intr_establish(void *, pci_intr_handle_t, 61 int, int (*func)(void *), void *, const char *); 62 void hdlg_pci_intr_disestablish(void *, void *); 63 64 void 65 hdlg_pci_init(pci_chipset_tag_t pc, void *cookie) 66 { 67 68 pc->pc_intr_v = cookie; /* the i80321 softc */ 69 pc->pc_intr_map = hdlg_pci_intr_map; 70 pc->pc_intr_string = hdlg_pci_intr_string; 71 pc->pc_intr_evcnt = hdlg_pci_intr_evcnt; 72 pc->pc_intr_establish = hdlg_pci_intr_establish; 73 pc->pc_intr_disestablish = hdlg_pci_intr_disestablish; 74 } 75 76 int 77 hdlg_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 78 { 79 struct i80321_softc *sc = pa->pa_pc->pc_intr_v; 80 uint32_t busno; 81 int b, d, f; 82 83 /* 84 * GigaLANDISK's interrupts are routed like so: 85 * 86 * XINT0 Intel i82541PI Gig-E 87 * 88 * XINT1 ACARD ATP875-A 89 * 90 * XINT2 NEC ehci/ohci 91 * 92 * XINT3 UART 93 */ 94 95 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); 96 busno = PCIXSR_BUSNO(busno); 97 if (busno == 0xff) 98 busno = 0; 99 100 pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f); 101 102 /* No mappings for devices not on our bus. */ 103 if (b != busno) 104 goto no_mapping; 105 106 switch (d) { 107 case 1: /* i82541PI Gig-E */ 108 if (pa->pa_intrpin == 1) { 109 *ihp = ICU_INT_XINT(0); 110 return 0; 111 } 112 goto no_mapping; 113 114 case 2: /* ATP875-A */ 115 if (pa->pa_intrpin == 1) { 116 *ihp = ICU_INT_XINT(1); 117 return 0; 118 } 119 goto no_mapping; 120 121 case 3: /* ehci/ohci */ 122 switch (pa->pa_intrpin) { 123 case 1: /* ohci */ 124 case 2: /* ohci */ 125 case 3: /* ehci */ 126 *ihp = ICU_INT_XINT(2); 127 return 0; 128 } 129 goto no_mapping; 130 131 default: 132 no_mapping: 133 printf("hdlg_pci_intr_map: no mapping for %d/%d/%d\n", 134 pa->pa_bus, pa->pa_device, pa->pa_function); 135 return 1; 136 } 137 138 return 0; 139 } 140 141 const char * 142 hdlg_pci_intr_string(void *v, pci_intr_handle_t ih, char *buf, size_t len) 143 { 144 145 strlcpy(buf, i80321_irqnames[ih], len); 146 return buf; 147 } 148 149 const struct evcnt * 150 hdlg_pci_intr_evcnt(void *v, pci_intr_handle_t ih) 151 { 152 153 /* XXX For now. */ 154 return NULL; 155 } 156 157 void * 158 hdlg_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl, 159 int (*func)(void *), void *arg, const char *xname) 160 { 161 162 return i80321_intr_establish(ih, ipl, func, arg); 163 } 164 165 void 166 hdlg_pci_intr_disestablish(void *v, void *cookie) 167 { 168 169 i80321_intr_disestablish(cookie); 170 } 171
Indexes created Sun Sep 21 20:09:37 GMT 2025