xref: /linux/arch/mips/include/asm/sn/intr.h (revision 8dd06ef34b6e2f41b29fbf5fc1663780f2524285)
1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License.  See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Copyright (C) 1992 - 1997 Silicon Graphics, Inc.
7  */
8 #ifndef __ASM_SN_INTR_H
9 #define __ASM_SN_INTR_H
10 
11 /*
12  * Macros to manipulate the interrupt register on the calling hub chip.
13  */
14 
15 #define LOCAL_HUB_SEND_INTR(level)				\
16 	LOCAL_HUB_S(PI_INT_PEND_MOD, (0x100 | (level)))
17 #define REMOTE_HUB_SEND_INTR(hub, level)			\
18 	REMOTE_HUB_S((hub), PI_INT_PEND_MOD, (0x100 | (level)))
19 
20 /*
21  * When clearing the interrupt, make sure this clear does make it
22  * to the hub. Otherwise we could end up losing interrupts.
23  * We do an uncached load of the int_pend0 register to ensure this.
24  */
25 
26 #define LOCAL_HUB_CLR_INTR(level)				\
27 do {								\
28 	LOCAL_HUB_S(PI_INT_PEND_MOD, (level));			\
29 	LOCAL_HUB_L(PI_INT_PEND0);				\
30 } while (0);
31 
32 #define REMOTE_HUB_CLR_INTR(hub, level)				\
33 do {								\
34 	nasid_t	 __hub = (hub);					\
35 								\
36 	REMOTE_HUB_S(__hub, PI_INT_PEND_MOD, (level));		\
37 	REMOTE_HUB_L(__hub, PI_INT_PEND0);			\
38 } while (0);
39 
40 /*
41  * Hard-coded interrupt levels:
42  */
43 
44 /*
45  *	L0 = SW1
46  *	L1 = SW2
47  *	L2 = INT_PEND0
48  *	L3 = INT_PEND1
49  *	L4 = RTC
50  *	L5 = Profiling Timer
51  *	L6 = Hub Errors
52  *	L7 = Count/Compare (T5 counters)
53  */
54 
55 
56 /*
57  * INT_PEND0 hard-coded bits.
58  */
59 
60 /*
61  * INT_PEND0 bits determined by hardware:
62  */
63 #define RESERVED_INTR		 0	/* What is this bit? */
64 #define GFX_INTR_A		 1
65 #define GFX_INTR_B		 2
66 #define PG_MIG_INTR		 3
67 #define UART_INTR		 4
68 #define CC_PEND_A		 5
69 #define CC_PEND_B		 6
70 
71 /*
72  * INT_PEND0 used by the kernel for itself ...
73  */
74 #define CPU_RESCHED_A_IRQ	 7
75 #define CPU_RESCHED_B_IRQ	 8
76 #define CPU_CALL_A_IRQ		 9
77 #define CPU_CALL_B_IRQ		10
78 
79 /*
80  * INT_PEND1 hard-coded bits:
81  */
82 #define NI_BRDCAST_ERR_A	39
83 #define NI_BRDCAST_ERR_B	40
84 
85 #define LLP_PFAIL_INTR_A	41	/* see ml/SN/SN0/sysctlr.c */
86 #define LLP_PFAIL_INTR_B	42
87 
88 #define TLB_INTR_A		43	/* used for tlb flush random */
89 #define TLB_INTR_B		44
90 
91 #define IP27_INTR_0		45	/* Reserved for PROM use */
92 #define IP27_INTR_1		46	/* do not use in Kernel */
93 #define IP27_INTR_2		47
94 #define IP27_INTR_3		48
95 #define IP27_INTR_4		49
96 #define IP27_INTR_5		50
97 #define IP27_INTR_6		51
98 #define IP27_INTR_7		52
99 
100 #define BRIDGE_ERROR_INTR	53	/* Setup by PROM to catch	*/
101 					/* Bridge Errors */
102 #define DEBUG_INTR_A		54
103 #define DEBUG_INTR_B		55	/* Used by symmon to stop all cpus */
104 #define IO_ERROR_INTR		57	/* Setup by PROM */
105 #define CLK_ERR_INTR		58
106 #define COR_ERR_INTR_A		59
107 #define COR_ERR_INTR_B		60
108 #define MD_COR_ERR_INTR		61
109 #define NI_ERROR_INTR		62
110 #define MSC_PANIC_INTR		63
111 
112 #endif /* __ASM_SN_INTR_H */
113