iop_pci.c revision 1.1.2.2
1 1.1.2.2 bouyer /* $NetBSD: iop_pci.c,v 1.1.2.2 2000/11/22 16:04:08 bouyer Exp $ */ 2 1.1.2.2 bouyer 3 1.1.2.2 bouyer /*- 4 1.1.2.2 bouyer * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 1.1.2.2 bouyer * All rights reserved. 6 1.1.2.2 bouyer * 7 1.1.2.2 bouyer * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 bouyer * by Andrew Doran. 9 1.1.2.2 bouyer * 10 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 12 1.1.2.2 bouyer * are met: 13 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 bouyer * documentation and/or other materials provided with the distribution. 18 1.1.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 19 1.1.2.2 bouyer * must display the following acknowledgement: 20 1.1.2.2 bouyer * This product includes software developed by the NetBSD 21 1.1.2.2 bouyer * Foundation, Inc. and its contributors. 22 1.1.2.2 bouyer * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1.2.2 bouyer * contributors may be used to endorse or promote products derived 24 1.1.2.2 bouyer * from this software without specific prior written permission. 25 1.1.2.2 bouyer * 26 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1.2.2 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1.2.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1.2.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1.2.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1.2.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1.2.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1.2.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1.2.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1.2.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1.2.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 37 1.1.2.2 bouyer */ 38 1.1.2.2 bouyer 39 1.1.2.2 bouyer /* 40 1.1.2.2 bouyer * PCI front-end for `iop' driver. 41 1.1.2.2 bouyer */ 42 1.1.2.2 bouyer 43 1.1.2.2 bouyer #include "opt_i2o.h" 44 1.1.2.2 bouyer 45 1.1.2.2 bouyer #include <sys/param.h> 46 1.1.2.2 bouyer #include <sys/systm.h> 47 1.1.2.2 bouyer #include <sys/kernel.h> 48 1.1.2.2 bouyer #include <sys/device.h> 49 1.1.2.2 bouyer #include <sys/queue.h> 50 1.1.2.2 bouyer #include <sys/proc.h> 51 1.1.2.2 bouyer 52 1.1.2.2 bouyer #include <machine/endian.h> 53 1.1.2.2 bouyer #include <machine/bus.h> 54 1.1.2.2 bouyer 55 1.1.2.2 bouyer #include <dev/pci/pcidevs.h> 56 1.1.2.2 bouyer #include <dev/pci/pcivar.h> 57 1.1.2.2 bouyer 58 1.1.2.2 bouyer #include <dev/i2o/i2o.h> 59 1.1.2.2 bouyer #include <dev/i2o/iopreg.h> 60 1.1.2.2 bouyer #include <dev/i2o/iopvar.h> 61 1.1.2.2 bouyer 62 1.1.2.2 bouyer #define PCI_INTERFACE_I2O_POLLED 0x00 63 1.1.2.2 bouyer #define PCI_INTERFACE_I2O_INTRDRIVEN 0x01 64 1.1.2.2 bouyer 65 1.1.2.2 bouyer static void iop_pci_attach(struct device *, struct device *, void *); 66 1.1.2.2 bouyer static int iop_pci_match(struct device *, struct cfdata *, void *); 67 1.1.2.2 bouyer 68 1.1.2.2 bouyer struct cfattach iop_pci_ca = { 69 1.1.2.2 bouyer sizeof(struct iop_softc), iop_pci_match, iop_pci_attach 70 1.1.2.2 bouyer }; 71 1.1.2.2 bouyer 72 1.1.2.2 bouyer static int 73 1.1.2.2 bouyer iop_pci_match(struct device *parent, struct cfdata *match, void *aux) 74 1.1.2.2 bouyer { 75 1.1.2.2 bouyer struct pci_attach_args *pa; 76 1.1.2.2 bouyer 77 1.1.2.2 bouyer pa = (struct pci_attach_args *)aux; 78 1.1.2.2 bouyer 79 1.1.2.2 bouyer /* 80 1.1.2.2 bouyer * Look for an "intelligent I/O processor" that adheres to the I2O 81 1.1.2.2 bouyer * specification. Ignore the device if it doesn't support interrupt 82 1.1.2.2 bouyer * driven operation. 83 1.1.2.2 bouyer */ 84 1.1.2.2 bouyer if (PCI_CLASS(pa->pa_class) == PCI_CLASS_I2O && 85 1.1.2.2 bouyer PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_I2O_STANDARD && 86 1.1.2.2 bouyer PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_I2O_INTRDRIVEN) 87 1.1.2.2 bouyer return (1); 88 1.1.2.2 bouyer 89 1.1.2.2 bouyer return (0); 90 1.1.2.2 bouyer } 91 1.1.2.2 bouyer 92 1.1.2.2 bouyer static void 93 1.1.2.2 bouyer iop_pci_attach(struct device *parent, struct device *self, void *aux) 94 1.1.2.2 bouyer { 95 1.1.2.2 bouyer struct pci_attach_args *pa; 96 1.1.2.2 bouyer struct iop_softc *sc; 97 1.1.2.2 bouyer pci_chipset_tag_t pc; 98 1.1.2.2 bouyer pci_intr_handle_t ih; 99 1.1.2.2 bouyer const char *intrstr; 100 1.1.2.2 bouyer pcireg_t reg; 101 1.1.2.2 bouyer int i; 102 1.1.2.2 bouyer 103 1.1.2.2 bouyer sc = (struct iop_softc *)self; 104 1.1.2.2 bouyer pa = (struct pci_attach_args *)aux; 105 1.1.2.2 bouyer pc = pa->pa_pc; 106 1.1.2.2 bouyer printf(": "); 107 1.1.2.2 bouyer 108 1.1.2.2 bouyer /* 109 1.1.2.2 bouyer * Record the first two regions that we find describing I/O space 110 1.1.2.2 bouyer * and memory space. These are needed when we fill the IOP system 111 1.1.2.2 bouyer * table. The kernel always uses the memory mapping to communicate 112 1.1.2.2 bouyer * with the IOP. 113 1.1.2.2 bouyer */ 114 1.1.2.2 bouyer for (i = PCI_MAPREG_START; i < PCI_MAPREG_END; i += 4) { 115 1.1.2.2 bouyer reg = pci_conf_read(pc, pa->pa_tag, i); 116 1.1.2.2 bouyer if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_IO) 117 1.1.2.2 bouyer break; 118 1.1.2.2 bouyer } 119 1.1.2.2 bouyer sc->sc_ioaddr = PCI_MAPREG_IO_ADDR(reg); 120 1.1.2.2 bouyer sc->sc_iosize = PCI_MAPREG_IO_SIZE(reg); 121 1.1.2.2 bouyer 122 1.1.2.2 bouyer for (i = PCI_MAPREG_START; i < PCI_MAPREG_END; i += 4) { 123 1.1.2.2 bouyer reg = pci_conf_read(pc, pa->pa_tag, i); 124 1.1.2.2 bouyer if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_MEM) 125 1.1.2.2 bouyer break; 126 1.1.2.2 bouyer } 127 1.1.2.2 bouyer sc->sc_memaddr = PCI_MAPREG_MEM_ADDR(reg); 128 1.1.2.2 bouyer sc->sc_memsize = PCI_MAPREG_MEM_SIZE(reg); 129 1.1.2.2 bouyer 130 1.1.2.2 bouyer if (i == PCI_MAPREG_END) { 131 1.1.2.2 bouyer printf("can't find mapping\n"); 132 1.1.2.2 bouyer return; 133 1.1.2.2 bouyer } 134 1.1.2.2 bouyer 135 1.1.2.2 bouyer /* XXX We should limit the size of the mapping. */ 136 1.1.2.2 bouyer if (pci_mapreg_map(pa, i, PCI_MAPREG_TYPE_MEM, 0, &sc->sc_iot, 137 1.1.2.2 bouyer &sc->sc_ioh, NULL, NULL)) { 138 1.1.2.2 bouyer printf("can't map board\n"); 139 1.1.2.2 bouyer return; 140 1.1.2.2 bouyer } 141 1.1.2.2 bouyer 142 1.1.2.2 bouyer sc->sc_dmat = pa->pa_dmat; 143 1.1.2.2 bouyer 144 1.1.2.2 bouyer /* Enable the device. */ 145 1.1.2.2 bouyer reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 146 1.1.2.2 bouyer pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 147 1.1.2.2 bouyer reg | PCI_COMMAND_MASTER_ENABLE); 148 1.1.2.2 bouyer 149 1.1.2.2 bouyer /* Map and establish the interrupt. XXX IPL_BIO. */ 150 1.1.2.2 bouyer if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin, 151 1.1.2.2 bouyer pa->pa_intrline, &ih)) { 152 1.1.2.2 bouyer printf("can't map interrupt\n"); 153 1.1.2.2 bouyer return; 154 1.1.2.2 bouyer } 155 1.1.2.2 bouyer intrstr = pci_intr_string(pc, ih); 156 1.1.2.2 bouyer sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, iop_intr, sc); 157 1.1.2.2 bouyer if (sc->sc_ih == NULL) { 158 1.1.2.2 bouyer printf("can't establish interrupt"); 159 1.1.2.2 bouyer if (intrstr != NULL) 160 1.1.2.2 bouyer printf(" at %s", intrstr); 161 1.1.2.2 bouyer printf("\n"); 162 1.1.2.2 bouyer return; 163 1.1.2.2 bouyer } 164 1.1.2.2 bouyer 165 1.1.2.2 bouyer /* Attach to the bus-independent code. */ 166 1.1.2.2 bouyer iop_init(sc, intrstr); 167 1.1.2.2 bouyer } 168
Indexes created Sun Sep 21 16:09:51 GMT 2025