1 /* $NetBSD: pci_machdep.c,v 1.10 2016/10/19 00:08:41 nonaka Exp $ */
2
3 /*
4 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
5 * Copyright (c) 1994 Charles M. Hannum. 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 by Charles M. Hannum.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*
34 * Machine-specific functions for PCI autoconfiguration.
35 *
36 * On PCs, there are two methods of generating PCI configuration cycles.
37 * We try to detect the appropriate mechanism for this machine and set
38 * up a few function pointers to access the correct method directly.
39 */
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/extent.h>
47 #include <sys/device.h>
48
49 #include <uvm/uvm_extern.h>
50
51 #define _POWERPC_BUS_DMA_PRIVATE
52 #include <sys/bus.h>
53 #include <machine/intr.h>
54
55 #include <dev/isa/isavar.h>
56
57 #include <dev/pci/pcivar.h>
58 #include <dev/pci/pcireg.h>
59 #include <dev/pci/pcidevs.h>
60 #include <dev/pci/pciconf.h>
61
62 void
ibmnws_pci_get_chipset_tag_indirect(pci_chipset_tag_t pc)63 ibmnws_pci_get_chipset_tag_indirect(pci_chipset_tag_t pc)
64 {
65
66 pc->pc_conf_v = (void *)pc;
67
68 pc->pc_attach_hook = genppc_pci_indirect_attach_hook;
69 pc->pc_bus_maxdevs = ibmnws_pci_bus_maxdevs;
70 pc->pc_make_tag = genppc_pci_indirect_make_tag;
71 pc->pc_conf_read = genppc_pci_indirect_conf_read;
72 pc->pc_conf_write = genppc_pci_indirect_conf_write;
73
74 pc->pc_intr_v = (void *)pc;
75
76 pc->pc_intr_map = genppc_pci_intr_map;
77 pc->pc_intr_string = genppc_pci_intr_string;
78 pc->pc_intr_evcnt = genppc_pci_intr_evcnt;
79 pc->pc_intr_establish = genppc_pci_intr_establish;
80 pc->pc_intr_disestablish = genppc_pci_intr_disestablish;
81 pc->pc_intr_setattr = genppc_pci_intr_setattr;
82 pc->pc_intr_type = genppc_pci_intr_type;
83 pc->pc_intr_alloc = genppc_pci_intr_alloc;
84 pc->pc_intr_release = genppc_pci_intr_release;
85 pc->pc_intx_alloc = genppc_pci_intx_alloc;
86
87 pc->pc_msi_v = (void *)pc;
88 genppc_pci_chipset_msi_init(pc);
89
90 pc->pc_msix_v = (void *)pc;
91 genppc_pci_chipset_msix_init(pc);
92
93 pc->pc_conf_interrupt = genppc_pci_conf_interrupt;
94 pc->pc_decompose_tag = genppc_pci_indirect_decompose_tag;
95 pc->pc_conf_hook = ibmnws_pci_conf_hook;
96
97 pc->pc_addr = mapiodev(PCI_MODE1_ADDRESS_REG, 4, false);
98 pc->pc_data = mapiodev(PCI_MODE1_DATA_REG, 4, false);
99 pc->pc_bus = 0;
100 pc->pc_node = 0;
101 pc->pc_memt = 0;
102 pc->pc_iot = 0;
103 }
104
105 int
ibmnws_pci_bus_maxdevs(void * v,int busno)106 ibmnws_pci_bus_maxdevs(void *v, int busno)
107 {
108
109 /*
110 * Bus number is irrelevant. Configuration Mechanism 1 is in
111 * use, can have devices 0-32 (i.e. the `normal' range).
112 */
113 return (32);
114 }
115
116 int
ibmnws_pci_conf_hook(void * v,int bus,int dev,int func,pcireg_t id)117 ibmnws_pci_conf_hook(void *v, int bus, int dev, int func, pcireg_t id)
118 {
119
120 /*
121 * The P9100 board found in some IBM machines cannot be
122 * over-configured.
123 */
124 if (PCI_VENDOR(id) == PCI_VENDOR_WEITEK &&
125 PCI_PRODUCT(id) == PCI_PRODUCT_WEITEK_P9100)
126 return 0;
127
128 return (PCI_CONF_DEFAULT);
129 }
130