openpic_ofw.c revision 261513
1139825Simp/*- 2124469Sgrehan * Copyright 2003 by Peter Grehan. All rights reserved. 3124469Sgrehan * 4124469Sgrehan * Redistribution and use in source and binary forms, with or without 5124469Sgrehan * modification, are permitted provided that the following conditions 6124469Sgrehan * are met: 7124469Sgrehan * 1. Redistributions of source code must retain the above copyright 8124469Sgrehan * notice, this list of conditions and the following disclaimer. 9124469Sgrehan * 2. Redistributions in binary form must reproduce the above copyright 10124469Sgrehan * notice, this list of conditions and the following disclaimer in the 11124469Sgrehan * documentation and/or other materials provided with the distribution. 12124469Sgrehan * 3. The name of the author may not be used to endorse or promote products 13124469Sgrehan * derived from this software without specific prior written permission. 14124469Sgrehan * 15124469Sgrehan * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16124469Sgrehan * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17124469Sgrehan * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18124469Sgrehan * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19124469Sgrehan * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20124469Sgrehan * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21124469Sgrehan * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22124469Sgrehan * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23124469Sgrehan * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24124469Sgrehan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25124469Sgrehan * SUCH DAMAGE. 26124469Sgrehan * 27124469Sgrehan */ 28124469Sgrehan 29124469Sgrehan#include <sys/cdefs.h> 30124469Sgrehan__FBSDID("$FreeBSD: head/sys/powerpc/ofw/openpic_ofw.c 261513 2014-02-05 14:44:22Z nwhitehorn $"); 31124469Sgrehan 32124469Sgrehan#include <sys/param.h> 33124469Sgrehan#include <sys/systm.h> 34131102Sgrehan#include <sys/module.h> 35124469Sgrehan#include <sys/bus.h> 36124469Sgrehan#include <sys/conf.h> 37124469Sgrehan#include <sys/kernel.h> 38124469Sgrehan 39133589Smarius#include <dev/ofw/ofw_bus.h> 40256898Snwhitehorn#include <dev/ofw/ofw_bus_subr.h> 41124469Sgrehan#include <dev/ofw/openfirm.h> 42124469Sgrehan 43124469Sgrehan#include <machine/bus.h> 44124469Sgrehan#include <machine/intr_machdep.h> 45124469Sgrehan#include <machine/md_var.h> 46124469Sgrehan#include <machine/pio.h> 47124469Sgrehan#include <machine/resource.h> 48124469Sgrehan 49124469Sgrehan#include <vm/vm.h> 50124469Sgrehan#include <vm/pmap.h> 51124469Sgrehan 52124469Sgrehan#include <sys/rman.h> 53124469Sgrehan 54259676Sjhibbits#include <machine/openpicreg.h> 55124469Sgrehan#include <machine/openpicvar.h> 56124469Sgrehan 57124469Sgrehan#include "pic_if.h" 58124469Sgrehan 59124469Sgrehan/* 60256898Snwhitehorn * OFW interface 61124469Sgrehan */ 62256898Snwhitehornstatic int openpic_ofw_probe(device_t); 63256898Snwhitehornstatic int openpic_ofw_attach(device_t); 64124469Sgrehan 65257059Snwhitehornstatic void openpic_ofw_translate_code(device_t, u_int irq, int code, 66257059Snwhitehorn enum intr_trigger *trig, enum intr_polarity *pol); 67257059Snwhitehorn 68256898Snwhitehornstatic device_method_t openpic_ofw_methods[] = { 69124469Sgrehan /* Device interface */ 70256898Snwhitehorn DEVMETHOD(device_probe, openpic_ofw_probe), 71256898Snwhitehorn DEVMETHOD(device_attach, openpic_ofw_attach), 72259676Sjhibbits DEVMETHOD(device_suspend, openpic_suspend), 73259676Sjhibbits DEVMETHOD(device_resume, openpic_resume), 74124469Sgrehan 75124469Sgrehan /* PIC interface */ 76209486Snwhitehorn DEVMETHOD(pic_bind, openpic_bind), 77176918Smarcel DEVMETHOD(pic_config, openpic_config), 78171805Smarcel DEVMETHOD(pic_dispatch, openpic_dispatch), 79171805Smarcel DEVMETHOD(pic_enable, openpic_enable), 80171805Smarcel DEVMETHOD(pic_eoi, openpic_eoi), 81176208Smarcel DEVMETHOD(pic_ipi, openpic_ipi), 82171805Smarcel DEVMETHOD(pic_mask, openpic_mask), 83171805Smarcel DEVMETHOD(pic_unmask, openpic_unmask), 84124469Sgrehan 85257059Snwhitehorn DEVMETHOD(pic_translate_code, openpic_ofw_translate_code), 86257059Snwhitehorn 87256898Snwhitehorn DEVMETHOD_END 88124469Sgrehan}; 89124469Sgrehan 90256898Snwhitehornstatic driver_t openpic_ofw_driver = { 91171805Smarcel "openpic", 92256898Snwhitehorn openpic_ofw_methods, 93171805Smarcel sizeof(struct openpic_softc), 94124469Sgrehan}; 95124469Sgrehan 96261513SnwhitehornDRIVER_MODULE(openpic, ofwbus, openpic_ofw_driver, openpic_devclass, 0, 0); 97256898SnwhitehornDRIVER_MODULE(openpic, simplebus, openpic_ofw_driver, openpic_devclass, 0, 0); 98256898SnwhitehornDRIVER_MODULE(openpic, macio, openpic_ofw_driver, openpic_devclass, 0, 0); 99124469Sgrehan 100124469Sgrehanstatic int 101256898Snwhitehornopenpic_ofw_probe(device_t dev) 102124469Sgrehan{ 103133589Smarius const char *type = ofw_bus_get_type(dev); 104124469Sgrehan 105256898Snwhitehorn if (type == NULL) 106124469Sgrehan return (ENXIO); 107124469Sgrehan 108256898Snwhitehorn if (!ofw_bus_is_compatible(dev, "chrp,open-pic") && 109256898Snwhitehorn strcmp(type, "open-pic") != 0) 110256898Snwhitehorn return (ENXIO); 111256898Snwhitehorn 112256898Snwhitehorn /* 113256898Snwhitehorn * On some U4 systems, there is a phantom MPIC in the mac-io cell. 114256898Snwhitehorn * The uninorth driver will pick up the real PIC, so ignore it here. 115256898Snwhitehorn */ 116242315Snwhitehorn if (OF_finddevice("/u4") != (phandle_t)-1) 117242315Snwhitehorn return (ENXIO); 118242315Snwhitehorn 119171805Smarcel device_set_desc(dev, OPENPIC_DEVSTR); 120124469Sgrehan return (0); 121124469Sgrehan} 122209298Snwhitehorn 123218075Smarcelstatic int 124256898Snwhitehornopenpic_ofw_attach(device_t dev) 125209298Snwhitehorn{ 126256898Snwhitehorn phandle_t xref, node; 127256898Snwhitehorn 128256898Snwhitehorn node = ofw_bus_get_node(dev); 129256898Snwhitehorn 130256898Snwhitehorn if (OF_getprop(node, "phandle", &xref, sizeof(xref)) == -1 && 131256898Snwhitehorn OF_getprop(node, "ibm,phandle", &xref, sizeof(xref)) == -1 && 132256898Snwhitehorn OF_getprop(node, "linux,phandle", &xref, sizeof(xref)) == -1) 133256898Snwhitehorn xref = node; 134256898Snwhitehorn 135256898Snwhitehorn return (openpic_common_attach(dev, xref)); 136209298Snwhitehorn} 137256898Snwhitehorn 138257059Snwhitehornstatic void 139257059Snwhitehornopenpic_ofw_translate_code(device_t dev, u_int irq, int code, 140257059Snwhitehorn enum intr_trigger *trig, enum intr_polarity *pol) 141257059Snwhitehorn{ 142257059Snwhitehorn switch (code) { 143257059Snwhitehorn case 0: 144257059Snwhitehorn /* L to H edge */ 145257059Snwhitehorn *trig = INTR_TRIGGER_EDGE; 146257059Snwhitehorn *pol = INTR_POLARITY_HIGH; 147257059Snwhitehorn break; 148257059Snwhitehorn case 1: 149257059Snwhitehorn /* Active L level */ 150257059Snwhitehorn *trig = INTR_TRIGGER_LEVEL; 151257059Snwhitehorn *pol = INTR_POLARITY_LOW; 152257059Snwhitehorn break; 153257059Snwhitehorn case 2: 154257059Snwhitehorn /* Active H level */ 155257059Snwhitehorn *trig = INTR_TRIGGER_LEVEL; 156257059Snwhitehorn *pol = INTR_POLARITY_HIGH; 157257059Snwhitehorn break; 158257059Snwhitehorn case 3: 159257059Snwhitehorn /* H to L edge */ 160257059Snwhitehorn *trig = INTR_TRIGGER_EDGE; 161257059Snwhitehorn *pol = INTR_POLARITY_LOW; 162257059Snwhitehorn break; 163257059Snwhitehorn default: 164257059Snwhitehorn *trig = INTR_TRIGGER_CONFORM; 165257059Snwhitehorn *pol = INTR_POLARITY_CONFORM; 166257059Snwhitehorn } 167257059Snwhitehorn} 168257059Snwhitehorn 169