xref: /linux/arch/mips/include/asm/sgi/ip22.h (revision a1ff5a7d78a036d6c2178ee5acd6ba4946243800)
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  * ip22.h: Definitions for SGI IP22 machines
7  *
8  * Copyright (C) 1996 David S. Miller
9  * Copyright (C) 1997, 1998, 1999, 2000 Ralf Baechle
10  */
11 
12 #ifndef _SGI_IP22_H
13 #define _SGI_IP22_H
14 
15 /*
16  * These are the virtual IRQ numbers, we divide all IRQ's into
17  * 'spaces', the 'space' determines where and how to enable/disable
18  * that particular IRQ on an SGI machine. HPC DMA and MC DMA interrupts
19  * are not supported this way. Driver is supposed to allocate HPC/MC
20  * interrupt as shareable and then look to proper status bit (see
21  * HAL2 driver). This will prevent many complications, trust me ;-)
22  */
23 
24 #include <irq.h>
25 #include <asm/sgi/ioc.h>
26 
27 #define SGINT_EISA	0	/* 16 EISA irq levels (Indigo2) */
28 #define SGINT_CPU	MIPS_CPU_IRQ_BASE	/* MIPS CPU define 8 interrupt sources */
29 #define SGINT_LOCAL0	(SGINT_CPU+8)	/* 8 local0 irq levels */
30 #define SGINT_LOCAL1	(SGINT_CPU+16)	/* 8 local1 irq levels */
31 #define SGINT_LOCAL2	(SGINT_CPU+24)	/* 8 local2 vectored irq levels */
32 #define SGINT_LOCAL3	(SGINT_CPU+32)	/* 8 local3 vectored irq levels */
33 #define SGINT_END	(SGINT_CPU+40)	/* End of 'spaces' */
34 
35 /*
36  * Individual interrupt definitions for the Indy and Indigo2
37  */
38 
39 #define SGI_SOFT_0_IRQ	SGINT_CPU + 0
40 #define SGI_SOFT_1_IRQ	SGINT_CPU + 1
41 #define SGI_LOCAL_0_IRQ SGINT_CPU + 2
42 #define SGI_LOCAL_1_IRQ SGINT_CPU + 3
43 #define SGI_8254_0_IRQ	SGINT_CPU + 4
44 #define SGI_8254_1_IRQ	SGINT_CPU + 5
45 #define SGI_BUSERR_IRQ	SGINT_CPU + 6
46 #define SGI_TIMER_IRQ	SGINT_CPU + 7
47 
48 #define SGI_FIFO_IRQ	SGINT_LOCAL0 + 0	/* FIFO full */
49 #define SGI_GIO_0_IRQ	SGI_FIFO_IRQ		/* GIO-0 */
50 #define SGI_WD93_0_IRQ	SGINT_LOCAL0 + 1	/* 1st onboard WD93 */
51 #define SGI_WD93_1_IRQ	SGINT_LOCAL0 + 2	/* 2nd onboard WD93 */
52 #define SGI_ENET_IRQ	SGINT_LOCAL0 + 3	/* onboard ethernet */
53 #define SGI_MCDMA_IRQ	SGINT_LOCAL0 + 4	/* MC DMA done */
54 #define SGI_PARPORT_IRQ SGINT_LOCAL0 + 5	/* Parallel port */
55 #define SGI_GIO_1_IRQ	SGINT_LOCAL0 + 6	/* GE / GIO-1 / 2nd-HPC */
56 #define SGI_MAP_0_IRQ	SGINT_LOCAL0 + 7	/* Mappable interrupt 0 */
57 
58 #define SGI_GPL0_IRQ	SGINT_LOCAL1 + 0	/* General Purpose LOCAL1_N<0> */
59 #define SGI_PANEL_IRQ	SGINT_LOCAL1 + 1	/* front panel */
60 #define SGI_GPL2_IRQ	SGINT_LOCAL1 + 2	/* General Purpose LOCAL1_N<2> */
61 #define SGI_MAP_1_IRQ	SGINT_LOCAL1 + 3	/* Mappable interrupt 1 */
62 #define SGI_HPCDMA_IRQ	SGINT_LOCAL1 + 4	/* HPC DMA done */
63 #define SGI_ACFAIL_IRQ	SGINT_LOCAL1 + 5	/* AC fail */
64 #define SGI_VINO_IRQ	SGINT_LOCAL1 + 6	/* Indy VINO */
65 #define SGI_GIO_2_IRQ	SGINT_LOCAL1 + 7	/* Vert retrace / GIO-2 */
66 
67 /* Mapped interrupts. These interrupts may be mapped to either 0, or 1 */
68 #define SGI_VERT_IRQ	SGINT_LOCAL2 + 0	/* INT3: newport vertical status */
69 #define SGI_EISA_IRQ	SGINT_LOCAL2 + 3	/* EISA interrupts */
70 #define SGI_KEYBD_IRQ	SGINT_LOCAL2 + 4	/* keyboard */
71 #define SGI_SERIAL_IRQ	SGINT_LOCAL2 + 5	/* onboard serial */
72 #define SGI_GIOEXP0_IRQ	(SGINT_LOCAL2 + 6)	/* Indy GIO EXP0 */
73 #define SGI_GIOEXP1_IRQ	(SGINT_LOCAL2 + 7)	/* Indy GIO EXP1 */
74 
75 #define ip22_is_fullhouse()	(sgioc->sysid & SGIOC_SYSID_FULLHOUSE)
76 
77 extern unsigned short ip22_eeprom_read(unsigned int *ctrl, int reg);
78 extern unsigned short ip22_nvram_read(int reg);
79 extern void ip22_be_interrupt(int irq);
80 extern void ip22_be_init(void) __init;
81 extern void indy_8254timer_irq(void);
82 
83 #endif
84