Commit | Line | Data |
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33cf45b9 MR |
1 | /* |
2 | * TURBOchannel architecture calls. | |
3 | * | |
4 | * Copyright (c) Harald Koerfgen, 1998 | |
5 | * Copyright (c) 2001, 2003, 2005, 2006 Maciej W. Rozycki | |
6 | * Copyright (c) 2005 James Simmons | |
7 | * | |
8 | * This file is subject to the terms and conditions of the GNU | |
9 | * General Public License. See the file "COPYING" in the main | |
10 | * directory of this archive for more details. | |
11 | */ | |
12 | #include <linux/compiler.h> | |
13 | #include <linux/errno.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/string.h> | |
16 | #include <linux/tc.h> | |
17 | #include <linux/types.h> | |
18 | ||
19 | #include <asm/addrspace.h> | |
20 | #include <asm/bootinfo.h> | |
21 | #include <asm/paccess.h> | |
22 | ||
23 | #include <asm/dec/interrupts.h> | |
24 | #include <asm/dec/prom.h> | |
25 | #include <asm/dec/system.h> | |
26 | ||
27 | /* | |
28 | * Protected read byte from TURBOchannel slot space. | |
29 | */ | |
30 | int tc_preadb(u8 *valp, void __iomem *addr) | |
31 | { | |
32 | return get_dbe(*valp, (u8 *)addr); | |
33 | } | |
34 | ||
35 | /* | |
36 | * Get TURBOchannel bus information as specified by the spec, plus | |
37 | * the slot space base address and the number of slots. | |
38 | */ | |
39 | int __init tc_bus_get_info(struct tc_bus *tbus) | |
40 | { | |
41 | if (!dec_tc_bus) | |
42 | return -ENXIO; | |
43 | ||
44 | memcpy(&tbus->info, rex_gettcinfo(), sizeof(tbus->info)); | |
45 | tbus->slot_base = CPHYSADDR((long)rex_slot_address(0)); | |
46 | ||
47 | switch (mips_machtype) { | |
48 | case MACH_DS5000_200: | |
49 | tbus->num_tcslots = 7; | |
50 | break; | |
51 | case MACH_DS5000_2X0: | |
52 | case MACH_DS5900: | |
53 | tbus->ext_slot_base = 0x20000000; | |
54 | tbus->ext_slot_size = 0x20000000; | |
55 | /* fall through */ | |
56 | case MACH_DS5000_1XX: | |
57 | tbus->num_tcslots = 3; | |
58 | break; | |
59 | case MACH_DS5000_XX: | |
60 | tbus->num_tcslots = 2; | |
61 | default: | |
62 | break; | |
63 | } | |
64 | return 0; | |
65 | } | |
66 | ||
67 | /* | |
68 | * Get the IRQ for the specified slot. | |
69 | */ | |
70 | void __init tc_device_get_irq(struct tc_dev *tdev) | |
71 | { | |
72 | switch (tdev->slot) { | |
73 | case 0: | |
74 | tdev->interrupt = dec_interrupt[DEC_IRQ_TC0]; | |
75 | break; | |
76 | case 1: | |
77 | tdev->interrupt = dec_interrupt[DEC_IRQ_TC1]; | |
78 | break; | |
79 | case 2: | |
80 | tdev->interrupt = dec_interrupt[DEC_IRQ_TC2]; | |
81 | break; | |
82 | /* | |
83 | * Yuck! DS5000/200 onboard devices | |
84 | */ | |
85 | case 5: | |
86 | tdev->interrupt = dec_interrupt[DEC_IRQ_TC5]; | |
87 | break; | |
88 | case 6: | |
89 | tdev->interrupt = dec_interrupt[DEC_IRQ_TC6]; | |
90 | break; | |
91 | default: | |
92 | tdev->interrupt = -1; | |
93 | break; | |
94 | } | |
95 | } |