blob: 661b2c0078d8f8f6a1719bc8dbebe1ebfbb54111 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
#include <linux/config.h>
#ifndef _ASM_IRQ_H
#define _ASM_IRQ_H
#include <asm/processor.h> /* for is_prep() */
#ifndef CONFIG_8xx
#ifdef CONFIG_APUS
#define enable_irq m68k_enable_irq
#define disable_irq m68k_disable_irq
#include <asm-m68k/irq.h>
#undef enable_irq
#undef disable_irq
#else /* CONFIG_APUS */
/*
* this is the # irq's for all ppc arch's (pmac/chrp/prep)
* so it is the max of them all - which happens to be powermac
* at present (G3 powermacs have 64).
*/
#define NR_IRQS 128
#endif /* CONFIG_APUS */
#define NUM_8259_INTERRUPTS 16
#define NUM_OPENPIC_INTERRUPTS 20
#define is_8259_irq(n) ((n) < NUM_8259_INTERRUPTS)
#define openpic_to_irq(n) ((n)+NUM_8259_INTERRUPTS)
#define irq_to_openpic(n) ((n)-NUM_8259_INTERRUPTS)
#define IRQ_8259_CASCADE NUM_8259_INTERRUPTS
extern void disable_irq(unsigned int);
extern void enable_irq(unsigned int);
#ifndef CONFIG_APUS
/*
* This gets called from serial.c, which is now used on
* powermacs as well as prep/chrp boxes.
* Prep and chrp both have cascaded 8259 PICs.
*/
static __inline__ int irq_cannonicalize(int irq)
{
return (((is_prep || is_chrp) && irq == 2) ? 9 : irq);
}
#endif
#else /* CONFIG_8xx */
/* The MPC8xx cores have 16 possible interrupts. There are eight
* possible level sensitive interrupts assigned and generated internally
* from such devices as CPM, PCMCIA, RTC, PIT, TimeBase and Decrementer.
* There are eight external interrupts (IRQs) that can be configured
* as either level or edge sensitive.
* On the MBX implementation, there is also the possibility of an 8259
* through the PCI and PCI-ISA bridges. All 8259 interrupts appear
* on the 8xx as IRQ3, but I may eventually add some of the 8259 code
* back into this port to handle that controller.
*/
#define NR_IRQS 16
#define SIU_IRQ0 0 /* Highest priority */
#define SIU_LEVEL0 1
#define SIU_IRQ1 2
#define SIU_LEVEL1 3
#define SIU_IRQ2 4
#define SIU_LEVEL2 5
#define SIU_IRQ3 6
#define SIU_LEVEL3 7
#define SIU_IRQ4 8
#define SIU_LEVEL4 9
#define SIU_IRQ5 10
#define SIU_LEVEL5 11
#define SIU_IRQ6 12
#define SIU_LEVEL6 13
#define SIU_IRQ7 14
#define SIU_LEVEL7 15
/* The internal interrupts we can configure as we see fit.
* My personal preference is CPM at level 2, which puts it above the
* MBX PCI/ISA/IDE interrupts.
*/
#define PIT_INTERRUPT SIU_LEVEL0
#define CPM_INTERRUPT SIU_LEVEL2
#define PCMCIA_INTERRUPT SIU_LEVEL6
#define DEC_INTERRUPT SIU_LEVEL7
/* Some internal interrupt registers use an 8-bit mask for the interrupt
* level instead of a number.
*/
#define mk_int_int_mask(IL) (1 << (7 - (IL/2)))
#ifdef CONFIG_MBX
/* These are defined (and fixed) by the MBX hardware implementation.*/
#define POWER_FAIL_INT SIU_IRQ0 /* Power fail */
#define TEMP_HILO_INT SIU_IRQ1 /* Temperature sensor */
#define QSPAN_INT SIU_IRQ2 /* PCI Bridge (DMA CTLR?) */
#define ISA_BRIDGE_INT SIU_IRQ3 /* All those PC things */
#define COMM_L_INT SIU_IRQ6 /* MBX Comm expansion connector pin */
#define STOP_ABRT_INT SIU_IRQ7 /* Stop/Abort header pin */
#endif /* CONFIG_MBX */
#ifdef CONFIG_FADS
#define FEC_INTERRUPT SIU_LEVEL1 /* FEC interrupt */
#endif
/* always the same on MBX -- Cort */
static __inline__ int irq_cannonicalize(int irq)
{
return irq;
}
#endif /* CONFIG_8xx */
#endif
|
