1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*-
* Copyright (c) 2011 Nathan Whitehorn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/libkern.h>
#include <sys/module.h>
#include <sys/pciio.h>
#include <dev/ofw/openfirm.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pci_private.h>
#include <machine/bus.h>
#include <machine/rtas.h>
#include <powerpc/ofw/ofw_pcibus.h>
#include <powerpc/pseries/plpar_iommu.h>
#include "pci_if.h"
#include "iommu_if.h"
static int plpar_pcibus_probe(device_t);
static bus_dma_tag_t plpar_pcibus_get_dma_tag(device_t dev, device_t child);
/*
* Driver methods.
*/
static device_method_t plpar_pcibus_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, plpar_pcibus_probe),
/* IOMMU functions */
DEVMETHOD(bus_get_dma_tag, plpar_pcibus_get_dma_tag),
DEVMETHOD(iommu_map, phyp_iommu_map),
DEVMETHOD(iommu_unmap, phyp_iommu_unmap),
DEVMETHOD_END
};
static devclass_t pci_devclass;
DEFINE_CLASS_1(pci, plpar_pcibus_driver, plpar_pcibus_methods,
sizeof(struct pci_softc), ofw_pcibus_driver);
DRIVER_MODULE(plpar_pcibus, pcib, plpar_pcibus_driver, pci_devclass, 0, 0);
static int
plpar_pcibus_probe(device_t dev)
{
phandle_t rtas;
if (ofw_bus_get_node(dev) == -1 || !rtas_exists())
return (ENXIO);
rtas = OF_finddevice("/rtas");
if (!OF_hasprop(rtas, "ibm,hypertas-functions"))
return (ENXIO);
device_set_desc(dev, "POWER Hypervisor PCI bus");
return (BUS_PROBE_SPECIFIC);
}
static bus_dma_tag_t
plpar_pcibus_get_dma_tag(device_t dev, device_t child)
{
struct ofw_pcibus_devinfo *dinfo;
while (device_get_parent(child) != dev)
child = device_get_parent(child);
dinfo = device_get_ivars(child);
if (dinfo->opd_dma_tag != NULL)
return (dinfo->opd_dma_tag);
bus_dma_tag_create(bus_get_dma_tag(dev),
1, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
NULL, NULL, BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED,
BUS_SPACE_MAXSIZE, 0, NULL, NULL, &dinfo->opd_dma_tag);
phyp_iommu_set_dma_tag(dev, child, dinfo->opd_dma_tag);
return (dinfo->opd_dma_tag);
}
|
