1 /* $NetBSD: sif.c,v 1.13 2023/11/05 21:54:27 andvar Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by UCHIYAMA Yasushi.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: sif.c,v 1.13 2023/11/05 21:54:27 andvar Exp $");
34
35 #include "debug_playstation2.h"
36
37 #include <sys/intr.h>
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/kernel.h>
41
42 #include <playstation2/playstation2/sifbios.h>
43 #include <playstation2/ee/dmacvar.h>
44 #include <playstation2/ee/sifvar.h>
45
46 #ifdef SIF_DEBUG
47 int __spd_total_alloc;
48 int sif_debug = 1;
49 #define DPRINTF(fmt, args...) \
50 if (sif_debug) \
51 printf("%s: " fmt, __func__ , ##args)
52 #define DPRINTFN(n, arg) \
53 if (sif_debug > (n)) \
54 n printf("%s: " fmt, __func__ , ##args)
55 #else
56 #define DPRINTF(arg...) ((void)0)
57 #define DPRINTFN(n, arg...) ((void)0)
58 #endif
59
60 #define ROUND64(x) ((((u_int32_t)(x)) + 63) & ~64)
61 #define BCD_TO_DECIMAL(x) \
62 ({ \
63 typeof(x) x_ = x; \
64 (((x_) >> 4) * 10 + ((x_) & 0xf)); \
65 })
66 #define MAJOR(x) BCD_TO_DECIMAL(((x) >> 8) & 0xff)
67 #define MINOR(x) BCD_TO_DECIMAL((x) & 0xff)
68
69 void
sif_init(void)70 sif_init(void)
71 {
72 u_int32_t vers;
73
74 vers = sifbios_getver();
75 printf("PlayStation 2 SIF BIOS version %d.%d\n",
76 MAJOR(vers), MINOR(vers));
77
78 /* Initialize SIF */
79 if (sifdma_init() < 0)
80 panic("SIFDMA");
81 if (sifcmd_init() < 0)
82 panic("SIFCMD");
83 dmac_intr_establish(D_CH5_SIF0, IPL_TTY, sifcmd_intr, 0);
84 if (sifrpc_init() < 0)
85 panic("SIFRPC");
86 if (iopmem_init() < 0)
87 panic("IOP Memory");
88 }
89
90 void
sif_exit(void)91 sif_exit(void)
92 {
93
94 sifrpc_exit();
95 sifcmd_exit();
96 dmac_intr_disestablish((void *)D_CH5_SIF0);
97 sifdma_exit();
98 }
99
100 int
iopdma_allocate_buffer(struct iopdma_segment * seg,size_t size)101 iopdma_allocate_buffer(struct iopdma_segment *seg, size_t size)
102 {
103 /*
104 * To avoid cache inconsistecy as the result of DMA(to memory),
105 * DMA buffer size is set to multiple of CPU cache line size (64B)
106 * and aligned to cache line.
107 */
108 seg->size = ROUND64(size);
109
110 seg->iop_paddr = iopmem_alloc(seg->size);
111
112 if (seg->iop_paddr == 0) {
113 printf("%s: can't allocate IOP memory.\n", __func__);
114 DPRINTF("request = %lu byte, current total = %#x\n",
115 size, __spd_total_alloc);
116 return (1);
117 }
118
119 seg->ee_vaddr = IOPPHYS_TO_EEKV(seg->iop_paddr);
120
121 #ifdef SIF_DEBUG
122 __spd_total_alloc += size;
123 #endif
124 DPRINTF("0x%08x+%#lx (total=%#x)\n", seg->iop_paddr, size,
125 __spd_total_alloc);
126
127 KDASSERT((seg->ee_vaddr & 63) == 0);
128
129 return (0);
130 }
131
132 void
iopdma_free_buffer(struct iopdma_segment * seg)133 iopdma_free_buffer(struct iopdma_segment *seg)
134 {
135 int ret __unused;
136
137 ret = iopmem_free(seg->iop_paddr);
138 #ifdef SIF_DEBUG
139 __spd_total_alloc -= seg->size;
140 #endif
141 DPRINTF("0x%08x (total=%#x, result=%d)\n", seg->iop_paddr,
142 __spd_total_alloc, ret);
143 }
144