vdevice.c revision 255643
1255643Snwhitehorn/*- 2255643Snwhitehorn * Copyright (c) 2011 Nathan Whitehorn 3255643Snwhitehorn * All rights reserved. 4255643Snwhitehorn * 5255643Snwhitehorn * Redistribution and use in source and binary forms, with or without 6255643Snwhitehorn * modification, are permitted provided that the following conditions 7255643Snwhitehorn * are met: 8255643Snwhitehorn * 1. Redistributions of source code must retain the above copyright 9255643Snwhitehorn * notice, this list of conditions and the following disclaimer. 10255643Snwhitehorn * 2. Redistributions in binary form must reproduce the above copyright 11255643Snwhitehorn * notice, this list of conditions and the following disclaimer in the 12255643Snwhitehorn * documentation and/or other materials provided with the distribution. 13255643Snwhitehorn * 14255643Snwhitehorn * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15255643Snwhitehorn * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16255643Snwhitehorn * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17255643Snwhitehorn * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18255643Snwhitehorn * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19255643Snwhitehorn * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20255643Snwhitehorn * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21255643Snwhitehorn * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22255643Snwhitehorn * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23255643Snwhitehorn * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24255643Snwhitehorn * SUCH DAMAGE. 25255643Snwhitehorn */ 26255643Snwhitehorn 27255643Snwhitehorn#include <sys/cdefs.h> 28255643Snwhitehorn__FBSDID("$FreeBSD: head/sys/powerpc/pseries/vdevice.c 255643 2013-09-17 17:37:04Z nwhitehorn $"); 29255643Snwhitehorn 30255643Snwhitehorn#include <sys/param.h> 31255643Snwhitehorn#include <sys/systm.h> 32255643Snwhitehorn#include <sys/kernel.h> 33255643Snwhitehorn#include <sys/module.h> 34255643Snwhitehorn#include <sys/malloc.h> 35255643Snwhitehorn#include <sys/bus.h> 36255643Snwhitehorn#include <sys/cpu.h> 37255643Snwhitehorn#include <machine/bus.h> 38255643Snwhitehorn#include <machine/intr_machdep.h> 39255643Snwhitehorn 40255643Snwhitehorn#include <dev/ofw/openfirm.h> 41255643Snwhitehorn#include <dev/ofw/ofw_bus.h> 42255643Snwhitehorn#include <dev/ofw/ofw_bus_subr.h> 43255643Snwhitehorn 44255643Snwhitehornstatic int vdevice_probe(device_t); 45255643Snwhitehornstatic int vdevice_attach(device_t); 46255643Snwhitehornstatic const struct ofw_bus_devinfo *vdevice_get_devinfo(device_t dev, 47255643Snwhitehorn device_t child); 48255643Snwhitehornstatic int vdevice_print_child(device_t dev, device_t child); 49255643Snwhitehornstatic struct resource_list *vdevice_get_resource_list (device_t, device_t); 50255643Snwhitehorn 51255643Snwhitehorn/* 52255643Snwhitehorn * VDevice devinfo 53255643Snwhitehorn */ 54255643Snwhitehornstruct vdevice_devinfo { 55255643Snwhitehorn struct ofw_bus_devinfo mdi_obdinfo; 56255643Snwhitehorn struct resource_list mdi_resources; 57255643Snwhitehorn}; 58255643Snwhitehorn 59255643Snwhitehornstatic device_method_t vdevice_methods[] = { 60255643Snwhitehorn /* Device interface */ 61255643Snwhitehorn DEVMETHOD(device_probe, vdevice_probe), 62255643Snwhitehorn DEVMETHOD(device_attach, vdevice_attach), 63255643Snwhitehorn 64255643Snwhitehorn /* Bus interface */ 65255643Snwhitehorn DEVMETHOD(bus_add_child, bus_generic_add_child), 66255643Snwhitehorn DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), 67255643Snwhitehorn DEVMETHOD(bus_print_child, vdevice_print_child), 68255643Snwhitehorn DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 69255643Snwhitehorn DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 70255643Snwhitehorn DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource), 71255643Snwhitehorn DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 72255643Snwhitehorn DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 73255643Snwhitehorn DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 74255643Snwhitehorn DEVMETHOD(bus_get_resource_list, vdevice_get_resource_list), 75255643Snwhitehorn 76255643Snwhitehorn /* ofw_bus interface */ 77255643Snwhitehorn DEVMETHOD(ofw_bus_get_devinfo, vdevice_get_devinfo), 78255643Snwhitehorn DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 79255643Snwhitehorn DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 80255643Snwhitehorn DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 81255643Snwhitehorn DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 82255643Snwhitehorn DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 83255643Snwhitehorn 84255643Snwhitehorn DEVMETHOD_END 85255643Snwhitehorn}; 86255643Snwhitehorn 87255643Snwhitehornstatic driver_t vdevice_driver = { 88255643Snwhitehorn "vdevice", 89255643Snwhitehorn vdevice_methods, 90255643Snwhitehorn 0 91255643Snwhitehorn}; 92255643Snwhitehorn 93255643Snwhitehornstatic devclass_t vdevice_devclass; 94255643Snwhitehorn 95255643SnwhitehornDRIVER_MODULE(vdevice, nexus, vdevice_driver, vdevice_devclass, 0, 0); 96255643Snwhitehorn 97255643Snwhitehornstatic int 98255643Snwhitehornvdevice_probe(device_t dev) 99255643Snwhitehorn{ 100255643Snwhitehorn const char *name; 101255643Snwhitehorn 102255643Snwhitehorn name = ofw_bus_get_name(dev); 103255643Snwhitehorn 104255643Snwhitehorn if (name == NULL || strcmp(name, "vdevice") != 0) 105255643Snwhitehorn return (ENXIO); 106255643Snwhitehorn 107255643Snwhitehorn if (!ofw_bus_is_compatible(dev, "IBM,vdevice")) 108255643Snwhitehorn return (ENXIO); 109255643Snwhitehorn 110255643Snwhitehorn device_set_desc(dev, "POWER Hypervisor Virtual Device Root"); 111255643Snwhitehorn 112255643Snwhitehorn return (0); 113255643Snwhitehorn} 114255643Snwhitehorn 115255643Snwhitehornstatic int 116255643Snwhitehornvdevice_attach(device_t dev) 117255643Snwhitehorn{ 118255643Snwhitehorn phandle_t root, child; 119255643Snwhitehorn device_t cdev; 120255643Snwhitehorn int icells, i, nintr, *intr; 121255643Snwhitehorn phandle_t iparent; 122255643Snwhitehorn struct vdevice_devinfo *dinfo; 123255643Snwhitehorn 124255643Snwhitehorn root = ofw_bus_get_node(dev); 125255643Snwhitehorn 126255643Snwhitehorn for (child = OF_child(root); child != 0; child = OF_peer(child)) { 127255643Snwhitehorn dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO); 128255643Snwhitehorn 129255643Snwhitehorn if (ofw_bus_gen_setup_devinfo(&dinfo->mdi_obdinfo, 130255643Snwhitehorn child) != 0) { 131255643Snwhitehorn free(dinfo, M_DEVBUF); 132255643Snwhitehorn continue; 133255643Snwhitehorn } 134255643Snwhitehorn resource_list_init(&dinfo->mdi_resources); 135255643Snwhitehorn 136255643Snwhitehorn if (OF_searchprop(child, "#interrupt-cells", &icells, 137255643Snwhitehorn sizeof(icells)) <= 0) 138255643Snwhitehorn icells = 2; 139255643Snwhitehorn if (OF_getprop(child, "interrupt-parent", &iparent, 140255643Snwhitehorn sizeof(iparent)) <= 0) 141255643Snwhitehorn iparent = -1; 142255643Snwhitehorn nintr = OF_getprop_alloc(child, "interrupts", sizeof(*intr), 143255643Snwhitehorn (void **)&intr); 144255643Snwhitehorn if (nintr > 0) { 145255643Snwhitehorn for (i = 0; i < nintr; i += icells) { 146255643Snwhitehorn u_int irq = intr[i]; 147255643Snwhitehorn if (iparent != -1) 148255643Snwhitehorn irq = MAP_IRQ(iparent, intr[i]); 149255643Snwhitehorn 150255643Snwhitehorn resource_list_add(&dinfo->mdi_resources, 151255643Snwhitehorn SYS_RES_IRQ, i, irq, irq, i); 152255643Snwhitehorn } 153255643Snwhitehorn } 154255643Snwhitehorn 155255643Snwhitehorn cdev = device_add_child(dev, NULL, -1); 156255643Snwhitehorn if (cdev == NULL) { 157255643Snwhitehorn device_printf(dev, "<%s>: device_add_child failed\n", 158255643Snwhitehorn dinfo->mdi_obdinfo.obd_name); 159255643Snwhitehorn ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo); 160255643Snwhitehorn free(dinfo, M_DEVBUF); 161255643Snwhitehorn continue; 162255643Snwhitehorn } 163255643Snwhitehorn device_set_ivars(cdev, dinfo); 164255643Snwhitehorn } 165255643Snwhitehorn 166255643Snwhitehorn return (bus_generic_attach(dev)); 167255643Snwhitehorn} 168255643Snwhitehorn 169255643Snwhitehornstatic const struct ofw_bus_devinfo * 170255643Snwhitehornvdevice_get_devinfo(device_t dev, device_t child) 171255643Snwhitehorn{ 172255643Snwhitehorn return (device_get_ivars(child)); 173255643Snwhitehorn} 174255643Snwhitehorn 175255643Snwhitehornstatic int 176255643Snwhitehornvdevice_print_child(device_t dev, device_t child) 177255643Snwhitehorn{ 178255643Snwhitehorn struct vdevice_devinfo *dinfo; 179255643Snwhitehorn struct resource_list *rl; 180255643Snwhitehorn int retval = 0; 181255643Snwhitehorn 182255643Snwhitehorn dinfo = device_get_ivars(child); 183255643Snwhitehorn rl = &dinfo->mdi_resources; 184255643Snwhitehorn 185255643Snwhitehorn retval += bus_print_child_header(dev, child); 186255643Snwhitehorn 187255643Snwhitehorn retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 188255643Snwhitehorn 189255643Snwhitehorn retval += bus_print_child_footer(dev, child); 190255643Snwhitehorn 191255643Snwhitehorn return (retval); 192255643Snwhitehorn} 193255643Snwhitehorn 194255643Snwhitehornstatic struct resource_list * 195255643Snwhitehornvdevice_get_resource_list (device_t dev, device_t child) 196255643Snwhitehorn{ 197255643Snwhitehorn struct vdevice_devinfo *dinfo; 198255643Snwhitehorn 199255643Snwhitehorn dinfo = device_get_ivars(child); 200255643Snwhitehorn return (&dinfo->mdi_resources); 201255643Snwhitehorn} 202255643Snwhitehorn 203