1 /* $OpenBSD: ali1543.c,v 1.6 2023/01/30 10:49:05 jsg Exp $ */
2 /* $NetBSD: ali1543.c,v 1.2 2001/09/13 14:00:52 tshiozak Exp $ */
3
4 /*
5 * Copyright (c) 2001
6 * HAYAKAWA Koichi. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
24 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*-
34 * Copyright (c) 1999 The NetBSD Foundation, Inc.
35 * All rights reserved.
36 *
37 * This code is derived from software contributed to The NetBSD Foundation
38 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
39 * NASA Ames Research Center.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
51 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
52 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
53 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
54 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
55 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
56 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
57 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
58 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
59 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
60 * POSSIBILITY OF SUCH DAMAGE.
61 */
62
63 /*
64 * Copyright (c) 1999, by UCHIYAMA Yasushi
65 * All rights reserved.
66 *
67 * Redistribution and use in source and binary forms, with or without
68 * modification, are permitted provided that the following conditions
69 * are met:
70 * 1. Redistributions of source code must retain the above copyright
71 * notice, this list of conditions and the following disclaimer.
72 * 2. The name of the developer may NOT be used to endorse or promote products
73 * derived from this software without specific prior written permission.
74 *
75 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
76 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
77 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
78 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
79 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
80 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
81 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
82 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
83 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
84 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
85 * SUCH DAMAGE.
86 */
87
88 /* HAYAKAWA Koichi wrote ALi 1543 PCI ICU code basing on VIA82C586 driver */
89
90 #include <sys/param.h>
91 #include <sys/systm.h>
92
93 #include <machine/intr.h>
94 #include <machine/bus.h>
95
96 #include <dev/pci/pcivar.h>
97
98 #include <i386/pci/pcibiosvar.h>
99 #include <i386/pci/piixvar.h>
100
101
102 int ali1543_getclink (pciintr_icu_handle_t, int, int *);
103 int ali1543_get_intr (pciintr_icu_handle_t, int, int *);
104 int ali1543_set_intr (pciintr_icu_handle_t, int, int);
105
106
107 const struct pciintr_icu ali1543_icu = {
108 ali1543_getclink,
109 ali1543_get_intr,
110 ali1543_set_intr,
111 piix_get_trigger,
112 piix_set_trigger,
113 };
114
115
116 /*
117 * Linux source code (linux/arch/i386/kernel/pci-irq.c) says that the
118 * irq order of ALi PCI ICU is shuffled.
119 */
120 static const int ali1543_intr_shuffle_get[16] = {
121 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15
122 };
123 static const int ali1543_intr_shuffle_set[16] = {
124 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15
125 };
126
127 #define ALI1543_IRQ_MASK 0xdefa
128
129 #define ALI1543_LEGAL_LINK(link) (((link) >= 0) && ((link) <= 7))
130 #define ALI1543_LEGAL_IRQ(irq) ((1 << (irq)) & ALI1543_IRQ_MASK)
131
132 #define ALI1543_INTR_CFG_REG 0x48
133
134 #define ALI1543_INTR_PIRQA_SHIFT 0
135 #define ALI1543_INTR_PIRQA_MASK 0x0000000f
136 #define ALI1543_INTR_PIRQB_SHIFT 4
137 #define ALI1543_INTR_PIRQB_MASK 0x000000f0
138 #define ALI1543_INTR_PIRQC_SHIFT 8
139 #define ALI1543_INTR_PIRQC_MASK 0x00000f00
140 #define ALI1543_INTR_PIRQD_SHIFT 12
141 #define ALI1543_INTR_PIRQD_MASK 0x0000f000
142
143 #define ALI1543_INTR_PIRQ_SHIFT(clink) ((clink)*4)
144 #define ALI1543_INTR_PIRQ_IRQ(reg, clink) \
145 (((reg) >> ((clink)*4)) & 0x0f)
146 #define ALI1543_PIRQ(reg, clink) \
147 ali1543_intr_shuffle_get[ALI1543_INTR_PIRQ_IRQ((reg), (clink))]
148
149
150 int
ali1543_init(pci_chipset_tag_t pc,bus_space_tag_t iot,pcitag_t tag,pciintr_icu_tag_t * ptagp,pciintr_icu_handle_t * phandp)151 ali1543_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag,
152 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp)
153 {
154
155 if (piix_init(pc, iot, tag, ptagp, phandp) == 0) {
156 *ptagp = &ali1543_icu;
157
158 return (0);
159 }
160
161 return (1);
162 }
163
164 int
ali1543_getclink(pciintr_icu_handle_t v,int link,int * clinkp)165 ali1543_getclink(pciintr_icu_handle_t v, int link, int *clinkp)
166 {
167
168 if (ALI1543_LEGAL_LINK(link - 1)) {
169 *clinkp = link - 1;
170 return (0);
171 }
172
173 return (1);
174 }
175
176 int
ali1543_get_intr(pciintr_icu_handle_t v,int clink,int * irqp)177 ali1543_get_intr(pciintr_icu_handle_t v, int clink, int *irqp)
178 {
179 struct piix_handle *ph = v;
180 pcireg_t reg;
181 int val;
182
183 if (ALI1543_LEGAL_LINK(clink) == 0)
184 return (1);
185
186 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG);
187 #ifdef DEBUG_1543
188 printf("ali1543: PIRQ reg 0x%08x\n", reg); /* XXX debug */
189 #endif /* DEBUG_1543 */
190 val = ALI1543_PIRQ(reg, clink);
191 *irqp = (val == 0) ?
192 I386_PCI_INTERRUPT_LINE_NO_CONNECTION : val;
193
194 return (0);
195 }
196
197 int
ali1543_set_intr(pciintr_icu_handle_t v,int clink,int irq)198 ali1543_set_intr(pciintr_icu_handle_t v, int clink, int irq)
199 {
200 struct piix_handle *ph = v;
201 int shift, val;
202 pcireg_t reg;
203
204 if (ALI1543_LEGAL_LINK(clink) == 0 || ALI1543_LEGAL_IRQ(irq) == 0)
205 return (1);
206
207 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG);
208 ali1543_get_intr(v, clink, &val);
209 shift = ALI1543_INTR_PIRQ_SHIFT(clink);
210 reg &= ~(0x0f << shift);
211 reg |= (ali1543_intr_shuffle_set[irq] << shift);
212 pci_conf_write(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG, reg);
213 if (ali1543_get_intr(v, clink, &val) != 0 || val != irq)
214 return (1);
215
216 return (0);
217 }
218