Annotation of sys/arch/alpha/pci/tsp_pci.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: tsp_pci.c,v 1.3 2002/03/14 01:26:27 millert Exp $ */
2: /* $NetBSD: tsp_pci.c,v 1.1 1999/06/29 06:46:47 ross Exp $ */
3:
4: /*-
5: * Copyright (c) 1999 by Ross Harvey. 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 Ross Harvey.
18: * 4. The name of Ross Harvey 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 ROSS HARVEY ``AS IS'' AND ANY EXPRESS
22: * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE
24: * ARE DISCLAIMED. IN NO EVENT SHALL ROSS HARVEY BE LIABLE FOR ANY
25: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
33: */
34:
35: #include <sys/param.h>
36: #include <sys/systm.h>
37: #include <sys/kernel.h>
38: #include <sys/device.h>
39:
40: #include <uvm/uvm_extern.h>
41:
42: #include <dev/pci/pcireg.h>
43: #include <dev/pci/pcivar.h>
44:
45: #include <machine/autoconf.h>
46: #include <machine/rpb.h>
47:
48: #include <alpha/pci/tsreg.h>
49: #include <alpha/pci/tsvar.h>
50:
51: #define tsp_pci() { Generate ctags(1) key. }
52:
53: void tsp_attach_hook(struct device *, struct device *,
54: struct pcibus_attach_args *);
55: int tsp_bus_maxdevs(void *, int);
56: pcitag_t tsp_make_tag(void *, int, int, int);
57: void tsp_decompose_tag(void *, pcitag_t, int *, int *,
58: int *);
59: pcireg_t tsp_conf_read(void *, pcitag_t, int);
60: void tsp_conf_write(void *, pcitag_t, int, pcireg_t);
61:
62: void
63: tsp_pci_init(pc, v)
64: pci_chipset_tag_t pc;
65: void *v;
66: {
67: pc->pc_conf_v = v;
68: pc->pc_attach_hook = tsp_attach_hook;
69: pc->pc_bus_maxdevs = tsp_bus_maxdevs;
70: pc->pc_make_tag = tsp_make_tag;
71: pc->pc_decompose_tag = tsp_decompose_tag;
72: pc->pc_conf_read = tsp_conf_read;
73: pc->pc_conf_write = tsp_conf_write;
74: }
75:
76: void
77: tsp_attach_hook(parent, self, pba)
78: struct device *parent, *self;
79: struct pcibus_attach_args *pba;
80: {
81: }
82:
83: int
84: tsp_bus_maxdevs(cpv, busno)
85: void *cpv;
86: int busno;
87: {
88: return 32;
89: }
90:
91: pcitag_t
92: tsp_make_tag(cpv, b, d, f)
93: void *cpv;
94: int b, d, f;
95: {
96: return b << 16 | d << 11 | f << 8;
97: }
98:
99: void
100: tsp_decompose_tag(cpv, tag, bp, dp, fp)
101: void *cpv;
102: pcitag_t tag;
103: int *bp, *dp, *fp;
104: {
105: if (bp != NULL)
106: *bp = (tag >> 16) & 0xff;
107: if (dp != NULL)
108: *dp = (tag >> 11) & 0x1f;
109: if (fp != NULL)
110: *fp = (tag >> 8) & 0x7;
111: }
112: /*
113: * Tsunami makes this a lot easier than it used to be, automatically
114: * generating type 0 or type 1 cycles, and quietly returning -1 with
115: * no errors on unanswered probes.
116: */
117: pcireg_t
118: tsp_conf_read(cpv, tag, offset)
119: void *cpv;
120: pcitag_t tag;
121: int offset;
122: {
123: pcireg_t *datap, data;
124: struct tsp_config *pcp = cpv;
125:
126: datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3));
127: alpha_mb();
128: data = *datap;
129: alpha_mb();
130: return data;
131: }
132:
133: void
134: tsp_conf_write(cpv, tag, offset, data)
135: void *cpv;
136: pcitag_t tag;
137: int offset;
138: pcireg_t data;
139: {
140: pcireg_t *datap;
141: struct tsp_config *pcp = cpv;
142:
143: datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3));
144: alpha_mb();
145: *datap = data;
146: alpha_mb();
147: }
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