2 * Copyright (c) 2011 Nathan Whitehorn
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/module.h>
34 #include <sys/malloc.h>
37 #include <machine/bus.h>
38 #include <machine/intr_machdep.h>
40 #include <dev/ofw/openfirm.h>
41 #include <dev/ofw/ofw_bus.h>
42 #include <dev/ofw/ofw_bus_subr.h>
44 #include <powerpc/pseries/plpar_iommu.h>
48 static int vdevice_probe(device_t);
49 static int vdevice_attach(device_t);
50 static const struct ofw_bus_devinfo *vdevice_get_devinfo(device_t dev,
52 static int vdevice_print_child(device_t dev, device_t child);
53 static struct resource_list *vdevice_get_resource_list(device_t, device_t);
54 static bus_dma_tag_t vdevice_get_dma_tag(device_t dev, device_t child);
59 struct vdevice_devinfo {
60 struct ofw_bus_devinfo mdi_obdinfo;
61 struct resource_list mdi_resources;
62 bus_dma_tag_t mdi_dma_tag;
65 static device_method_t vdevice_methods[] = {
66 /* Device interface */
67 DEVMETHOD(device_probe, vdevice_probe),
68 DEVMETHOD(device_attach, vdevice_attach),
71 DEVMETHOD(bus_add_child, bus_generic_add_child),
72 DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
73 DEVMETHOD(bus_print_child, vdevice_print_child),
74 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
75 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
76 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
77 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
78 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
79 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
80 DEVMETHOD(bus_get_resource_list, vdevice_get_resource_list),
82 /* ofw_bus interface */
83 DEVMETHOD(ofw_bus_get_devinfo, vdevice_get_devinfo),
84 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
85 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
86 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
87 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
88 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
91 DEVMETHOD(bus_get_dma_tag, vdevice_get_dma_tag),
92 DEVMETHOD(iommu_map, phyp_iommu_map),
93 DEVMETHOD(iommu_unmap, phyp_iommu_unmap),
98 static driver_t vdevice_driver = {
104 static devclass_t vdevice_devclass;
106 DRIVER_MODULE(vdevice, nexus, vdevice_driver, vdevice_devclass, 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 int icells, i, nintr, *intr;
133 struct vdevice_devinfo *dinfo;
135 root = ofw_bus_get_node(dev);
137 for (child = OF_child(root); child != 0; child = OF_peer(child)) {
138 dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
140 if (ofw_bus_gen_setup_devinfo(&dinfo->mdi_obdinfo,
142 free(dinfo, M_DEVBUF);
145 resource_list_init(&dinfo->mdi_resources);
147 if (OF_searchprop(child, "#interrupt-cells", &icells,
148 sizeof(icells)) <= 0)
150 if (OF_getprop(child, "interrupt-parent", &iparent,
151 sizeof(iparent)) <= 0)
153 nintr = OF_getprop_alloc(child, "interrupts", sizeof(*intr),
156 for (i = 0; i < nintr; i += icells) {
159 irq = MAP_IRQ(iparent, intr[i]);
161 resource_list_add(&dinfo->mdi_resources,
162 SYS_RES_IRQ, i, irq, irq, i);
166 cdev = device_add_child(dev, NULL, -1);
168 device_printf(dev, "<%s>: device_add_child failed\n",
169 dinfo->mdi_obdinfo.obd_name);
170 ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo);
171 free(dinfo, M_DEVBUF);
174 device_set_ivars(cdev, dinfo);
177 return (bus_generic_attach(dev));
180 static const struct ofw_bus_devinfo *
181 vdevice_get_devinfo(device_t dev, device_t child)
183 return (device_get_ivars(child));
187 vdevice_print_child(device_t dev, device_t child)
189 struct vdevice_devinfo *dinfo;
190 struct resource_list *rl;
193 dinfo = device_get_ivars(child);
194 rl = &dinfo->mdi_resources;
196 retval += bus_print_child_header(dev, child);
198 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
200 retval += bus_print_child_footer(dev, child);
205 static struct resource_list *
206 vdevice_get_resource_list (device_t dev, device_t child)
208 struct vdevice_devinfo *dinfo;
210 dinfo = device_get_ivars(child);
211 return (&dinfo->mdi_resources);
215 vdevice_get_dma_tag(device_t dev, device_t child)
217 struct vdevice_devinfo *dinfo;
218 while (child != NULL && device_get_parent(child) != dev)
219 child = device_get_parent(child);
220 dinfo = device_get_ivars(child);
222 if (dinfo->mdi_dma_tag == NULL) {
223 bus_dma_tag_create(bus_get_dma_tag(dev),
224 1, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
225 NULL, NULL, BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED,
226 BUS_SPACE_MAXSIZE, 0, NULL, NULL, &dinfo->mdi_dma_tag);
227 phyp_iommu_set_dma_tag(dev, child, dinfo->mdi_dma_tag);
230 return (dinfo->mdi_dma_tag);