2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2011 Nathan Whitehorn
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/malloc.h>
39 #include <machine/bus.h>
40 #include <machine/intr_machdep.h>
42 #include <dev/ofw/openfirm.h>
43 #include <dev/ofw/ofw_bus.h>
44 #include <dev/ofw/ofw_bus_subr.h>
46 #include <powerpc/pseries/plpar_iommu.h>
50 static int vdevice_probe(device_t);
51 static int vdevice_attach(device_t);
52 static const struct ofw_bus_devinfo *vdevice_get_devinfo(device_t dev,
54 static int vdevice_print_child(device_t dev, device_t child);
55 static struct resource_list *vdevice_get_resource_list(device_t, device_t);
56 static bus_dma_tag_t vdevice_get_dma_tag(device_t dev, device_t child);
61 struct vdevice_devinfo {
62 struct ofw_bus_devinfo mdi_obdinfo;
63 struct resource_list mdi_resources;
64 bus_dma_tag_t mdi_dma_tag;
67 static device_method_t vdevice_methods[] = {
68 /* Device interface */
69 DEVMETHOD(device_probe, vdevice_probe),
70 DEVMETHOD(device_attach, vdevice_attach),
73 DEVMETHOD(bus_add_child, bus_generic_add_child),
74 DEVMETHOD(bus_child_pnpinfo, ofw_bus_gen_child_pnpinfo),
75 DEVMETHOD(bus_print_child, vdevice_print_child),
76 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
77 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
78 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
79 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
80 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
81 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
82 DEVMETHOD(bus_get_resource_list, vdevice_get_resource_list),
84 /* ofw_bus interface */
85 DEVMETHOD(ofw_bus_get_devinfo, vdevice_get_devinfo),
86 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
87 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
88 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
89 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
90 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
93 DEVMETHOD(bus_get_dma_tag, vdevice_get_dma_tag),
94 DEVMETHOD(iommu_map, phyp_iommu_map),
95 DEVMETHOD(iommu_unmap, phyp_iommu_unmap),
100 static driver_t vdevice_driver = {
106 DRIVER_MODULE(vdevice, ofwbus, vdevice_driver, 0, 0);
109 vdevice_probe(device_t dev)
113 name = ofw_bus_get_name(dev);
115 if (name == NULL || strcmp(name, "vdevice") != 0)
118 if (!ofw_bus_is_compatible(dev, "IBM,vdevice"))
121 device_set_desc(dev, "POWER Hypervisor Virtual Device Root");
127 vdevice_attach(device_t dev)
129 phandle_t root, child;
131 struct vdevice_devinfo *dinfo;
133 root = ofw_bus_get_node(dev);
135 /* The XICP (root PIC) will handle all our interrupts */
136 powerpc_register_pic(root_pic, OF_xref_from_node(root),
137 1 << 24 /* 24-bit XIRR field */, 1 /* Number of IPIs */, FALSE);
139 for (child = OF_child(root); child != 0; child = OF_peer(child)) {
140 dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
142 if (ofw_bus_gen_setup_devinfo(&dinfo->mdi_obdinfo,
144 free(dinfo, M_DEVBUF);
147 resource_list_init(&dinfo->mdi_resources);
149 ofw_bus_intr_to_rl(dev, child, &dinfo->mdi_resources, NULL);
151 cdev = device_add_child(dev, NULL, -1);
153 device_printf(dev, "<%s>: device_add_child failed\n",
154 dinfo->mdi_obdinfo.obd_name);
155 ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo);
156 free(dinfo, M_DEVBUF);
159 device_set_ivars(cdev, dinfo);
162 return (bus_generic_attach(dev));
165 static const struct ofw_bus_devinfo *
166 vdevice_get_devinfo(device_t dev, device_t child)
168 return (device_get_ivars(child));
172 vdevice_print_child(device_t dev, device_t child)
174 struct vdevice_devinfo *dinfo;
175 struct resource_list *rl;
178 dinfo = device_get_ivars(child);
179 rl = &dinfo->mdi_resources;
181 retval += bus_print_child_header(dev, child);
183 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
185 retval += bus_print_child_footer(dev, child);
190 static struct resource_list *
191 vdevice_get_resource_list (device_t dev, device_t child)
193 struct vdevice_devinfo *dinfo;
195 dinfo = device_get_ivars(child);
196 return (&dinfo->mdi_resources);
200 vdevice_get_dma_tag(device_t dev, device_t child)
202 struct vdevice_devinfo *dinfo;
203 while (child != NULL && device_get_parent(child) != dev)
204 child = device_get_parent(child);
205 dinfo = device_get_ivars(child);
207 if (dinfo->mdi_dma_tag == NULL) {
208 bus_dma_tag_create(bus_get_dma_tag(dev),
209 1, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
210 NULL, NULL, BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED,
211 BUS_SPACE_MAXSIZE, 0, NULL, NULL, &dinfo->mdi_dma_tag);
212 phyp_iommu_set_dma_tag(dev, child, dinfo->mdi_dma_tag);
215 return (dinfo->mdi_dma_tag);