1 /* $NetBSD: pci_machdep.c,v 1.25 2015/02/18 16:47:59 macallan Exp $ */
2
3 /*
4 * Copyright (c) 2000 Soren S. Jorvang
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed for the
18 * NetBSD Project. See http://www.NetBSD.org/ for
19 * information about NetBSD.
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36 __KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.25 2015/02/18 16:47:59 macallan Exp $");
37
38 #include "opt_pci.h"
39 #include "pci.h"
40
41 #include <sys/types.h>
42 #include <sys/param.h>
43 #include <sys/time.h>
44 #include <sys/systm.h>
45 #include <sys/errno.h>
46 #include <sys/device.h>
47
48 #include <uvm/uvm_extern.h>
49
50 #include <sys/bus.h>
51 #include <machine/intr.h>
52 #include <machine/sysconf.h>
53
54 #include <dev/pci/pcivar.h>
55 #include <dev/pci/pcireg.h>
56 #include <dev/pci/pcidevs.h>
57 #include <dev/pci/pciconf.h>
58
59 struct mips_bus_dma_tag pci_bus_dma_tag;
60
61 void
pci_attach_hook(device_t parent,device_t self,struct pcibus_attach_args * pba)62 pci_attach_hook(device_t parent, device_t self, struct pcibus_attach_args *pba)
63 {
64 /*
65 * PCI doesn't have any special needs; just use
66 * the generic versions of these functions as
67 * established in sgimips_bus_dma_init().
68 */
69 pci_bus_dma_tag = sgimips_default_bus_dma_tag; /* struct copy */
70
71 /* XXX */
72
73 return;
74 }
75
76 int
pci_bus_maxdevs(pci_chipset_tag_t pc,int busno)77 pci_bus_maxdevs(pci_chipset_tag_t pc, int busno)
78 {
79
80 return (*pc->pc_bus_maxdevs)(pc, busno);
81 }
82
83 pcitag_t
pci_make_tag(pci_chipset_tag_t pc,int bus,int device,int function)84 pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function)
85 {
86
87 return (bus << 16) | (device << 11) | (function << 8);
88 }
89
90 void
pci_decompose_tag(pci_chipset_tag_t pc,pcitag_t tag,int * bp,int * dp,int * fp)91 pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, int *fp)
92 {
93
94 if (bp != NULL)
95 *bp = (tag >> 16) & 0xff;
96 if (dp != NULL)
97 *dp = (tag >> 11) & 0x1f;
98 if (fp != NULL)
99 *fp = (tag >> 8) & 0x07;
100 }
101
102 pcireg_t
pci_conf_read(pci_chipset_tag_t pc,pcitag_t tag,int reg)103 pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg)
104 {
105
106 return (*pc->pc_conf_read)(pc, tag, reg);
107 }
108
109 void
pci_conf_write(pci_chipset_tag_t pc,pcitag_t tag,int reg,pcireg_t data)110 pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t data)
111 {
112
113 (*pc->pc_conf_write)(pc, tag, reg, data);
114 }
115
116 int
pci_intr_map(const struct pci_attach_args * pa,pci_intr_handle_t * ihp)117 pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
118 {
119 return (*pa->pa_pc->pc_intr_map)(pa, ihp);
120 }
121
122 const char *
pci_intr_string(pci_chipset_tag_t pc,pci_intr_handle_t ih,char * buf,size_t len)123 pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih, char *buf,
124 size_t len)
125 {
126 return (*pc->pc_intr_string)(pc, ih, buf, len);
127 }
128
129 const struct evcnt *
pci_intr_evcnt(pci_chipset_tag_t pc,pci_intr_handle_t ih)130 pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih)
131 {
132
133 /* XXX for now, no evcnt parent reported */
134 return NULL;
135 }
136
137 int
pci_intr_setattr(pci_chipset_tag_t pc,pci_intr_handle_t * ih,int attr,uint64_t data)138 pci_intr_setattr(pci_chipset_tag_t pc, pci_intr_handle_t *ih,
139 int attr, uint64_t data)
140 {
141
142 switch (attr) {
143 case PCI_INTR_MPSAFE:
144 return 0;
145 default:
146 return ENODEV;
147 }
148 }
149
150 void *
pci_intr_establish(pci_chipset_tag_t pc,pci_intr_handle_t ih,int level,int (* func)(void *),void * arg)151 pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level,
152 int (*func)(void *), void *arg)
153 {
154
155 return (void *)(*pc->intr_establish)(ih, 0, func, arg);
156 }
157
158 void
pci_intr_disestablish(pci_chipset_tag_t pc,void * cookie)159 pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie)
160 {
161
162 (*pc->intr_disestablish)(cookie);
163 }
164
165 #ifdef PCI_NETBSD_CONFIGURE
166 int
pci_conf_hook(pci_chipset_tag_t pc,int bus,int device,int function,pcireg_t id)167 pci_conf_hook(pci_chipset_tag_t pc, int bus, int device, int function,
168 pcireg_t id)
169 {
170
171 if (pc->pc_conf_hook)
172 return (*pc->pc_conf_hook)(pc, bus, device, function, id);
173 else
174 return (PCI_CONF_DEFAULT);
175 }
176
177 void
pci_conf_interrupt(pci_chipset_tag_t pc,int bus,int dev,int pin,int swiz,int * iline)178 pci_conf_interrupt(pci_chipset_tag_t pc, int bus, int dev, int pin, int swiz,
179 int *iline)
180 {
181
182 return;
183 }
184 #endif
185