patch-2.4.19 linux-2.4.19/include/asm-ia64/sn/sn1/intr.h

• Lines: 238
• Date: Fri Aug 2 17:39:45 2002
• Orig file: linux-2.4.18/include/asm-ia64/sn/sn1/intr.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/include/asm-ia64/sn/sn1/intr.h linux-2.4.19/include/asm-ia64/sn/sn1/intr.h
@@ -0,0 +1,237 @@
+/* $Id: intr.h,v 1.1 2002/02/28 17:31:25 marcelo Exp $
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1992 - 1997, 2000-2002 Silicon Graphics, Inc. All rights reserved.
+ */
+#ifndef _ASM_IA64_SN_SN1_INTR_H
+#define _ASM_IA64_SN_SN1_INTR_H
+
+/* Subnode wildcard */
+#define SUBNODE_ANY		(-1)
+
+/* Number of interrupt levels associated with each interrupt register. */
+#define N_INTPEND_BITS		64
+
+#define INT_PEND0_BASELVL	0
+#define INT_PEND1_BASELVL	64
+
+#define	N_INTPENDJUNK_BITS	8
+#define	INTPENDJUNK_CLRBIT	0x80
+
+#include <asm/sn/intr_public.h>
+#include <asm/sn/driver.h>
+#include <asm/sn/xtalk/xtalk.h>
+#include <asm/sn/hack.h>
+
+#ifndef __ASSEMBLY__
+#define II_NAMELEN	24
+
+/*
+ * Dispatch table entry - contains information needed to call an interrupt
+ * routine.
+ */
+typedef struct intr_vector_s {
+	intr_func_t	iv_func;	/* Interrupt handler function */
+	intr_func_t	iv_prefunc;	/* Interrupt handler prologue func */
+	void		*iv_arg;	/* Argument to pass to handler */
+	cpuid_t			iv_mustruncpu;	/* Where we must run. */
+} intr_vector_t;
+
+/* Interrupt information table. */
+typedef struct intr_info_s {
+	xtalk_intr_setfunc_t	ii_setfunc;	/* Function to set the interrupt
+						 * destination and level register.
+						 * It returns 0 (success) or an
+						 * error code.
+						 */
+	void			*ii_cookie;	/* arg passed to setfunc */
+	devfs_handle_t		ii_owner_dev;	/* device that owns this intr */
+	char			ii_name[II_NAMELEN];	/* Name of this intr. */
+	int			ii_flags;	/* informational flags */
+} intr_info_t;
+
+
+#define THD_CREATED	0x00000001	/*
+					 * We've created a thread for this
+					 * interrupt.
+					 */
+
+/*
+ * Bits for ii_flags:
+ */
+#define II_UNRESERVE	0
+#define II_RESERVE	1		/* Interrupt reserved. 			*/
+#define II_INUSE	2		/* Interrupt connected 			*/
+#define II_ERRORINT	4		/* INterrupt is an error condition 	*/
+#define II_THREADED	8		/* Interrupt handler is threaded.	*/
+
+/*
+ * Interrupt level wildcard
+ */
+#define INTRCONNECT_ANYBIT	(-1)
+
+/*
+ * This structure holds information needed both to call and to maintain
+ * interrupts.  The two are in separate arrays for the locality benefits.
+ * Since there's only one set of vectors per hub chip (but more than one
+ * CPU, the lock to change the vector tables must be here rather than in
+ * the PDA.
+ */
+
+typedef struct intr_vecblk_s {
+	intr_vector_t	vectors[N_INTPEND_BITS];  /* information needed to
+						     call an intr routine. */
+	intr_info_t	info[N_INTPEND_BITS];	  /* information needed only
+						     to maintain interrupts. */
+	spinlock_t	vector_lock;		  /* Lock for this and the
+						     masks in the PDA. */
+	splfunc_t	vector_spl;		  /* vector_lock req'd spl */
+	int		vector_state;		  /* Initialized to zero.
+						     Set to INTR_INITED
+						     by hubintr_init.
+						   */
+	int		vector_count;		  /* Number of vectors
+						   * reserved.
+						   */
+	int		cpu_count[CPUS_PER_SUBNODE]; /* How many interrupts are
+						   * connected to each CPU
+						   */
+	int		ithreads_enabled;	  /* Are interrupt threads
+						   * initialized on this node.
+						   * and block?
+						   */
+} intr_vecblk_t;
+
+/* Possible values for vector_state: */
+#define VECTOR_UNINITED	0
+#define VECTOR_INITED	1
+#define VECTOR_SET	2
+
+#define hub_intrvect0	private.p_intmasks.dispatch0->vectors
+#define hub_intrvect1	private.p_intmasks.dispatch1->vectors
+#define hub_intrinfo0	private.p_intmasks.dispatch0->info
+#define hub_intrinfo1	private.p_intmasks.dispatch1->info
+
+/*
+ * Macros to manipulate the interrupt register on the calling hub chip.
+ */
+
+#define LOCAL_HUB_SEND_INTR(_level)	LOCAL_HUB_S(PI_INT_PEND_MOD, \
+						    (0x100|(_level)))
+#define REMOTE_HUB_PI_SEND_INTR(_hub, _sn, _level) \
+		REMOTE_HUB_PI_S((_hub), _sn, PI_INT_PEND_MOD, (0x100|(_level)))
+
+#define REMOTE_CPU_SEND_INTR(_cpuid, _level) 					\
+		REMOTE_HUB_PI_S(cpuid_to_nasid(_cpuid),				\
+			SUBNODE(cpuid_to_slice(_cpuid)),				\
+			PI_INT_PEND_MOD, (0x100|(_level)))
+
+/*
+ * When clearing the interrupt, make sure this clear does make it 
+ * to the hub. Otherwise we could end up losing interrupts.
+ * We do an uncached load of the int_pend0 register to ensure this.
+ */
+
+#define LOCAL_HUB_CLR_INTR(_level)	  \
+                LOCAL_HUB_S(PI_INT_PEND_MOD, (_level)),	\
+                LOCAL_HUB_L(PI_INT_PEND0)
+#define REMOTE_HUB_PI_CLR_INTR(_hub, _sn, _level) \
+		REMOTE_HUB_PI_S((_hub), (_sn), PI_INT_PEND_MOD, (_level)),	\
+                REMOTE_HUB_PI_L((_hub), (_sn), PI_INT_PEND0)
+
+/* Special support for use by gfx driver only.  Supports special gfx hub interrupt. */
+extern void install_gfxintr(cpuid_t cpu, ilvl_t swlevel, intr_func_t intr_func, void *intr_arg);
+
+void setrtvector(intr_func_t func);
+
+/*
+ * Interrupt blocking
+ */
+extern void intr_block_bit(cpuid_t cpu, int bit);
+extern void intr_unblock_bit(cpuid_t cpu, int bit);
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * Hard-coded interrupt levels:
+ */
+
+/*
+ *	L0 = SW1
+ *	L1 = SW2
+ *	L2 = INT_PEND0
+ *	L3 = INT_PEND1
+ *	L4 = RTC
+ *	L5 = Profiling Timer
+ *	L6 = Hub Errors
+ *	L7 = Count/Compare (T5 counters)
+ */
+
+
+/* INT_PEND0 hard-coded bits. */
+#ifdef DEBUG_INTR_TSTAMP
+/* hard coded interrupt level for interrupt latency test interrupt */
+#define	CPU_INTRLAT_B	62
+#define	CPU_INTRLAT_A	61
+#endif
+
+/* Hardcoded bits required by software. */
+#define MSC_MESG_INTR	9
+#define CPU_ACTION_B	8
+#define CPU_ACTION_A	7
+
+/* These are determined by hardware: */
+#define CC_PEND_B	6
+#define CC_PEND_A	5
+#define UART_INTR	4
+#define PG_MIG_INTR	3
+#define GFX_INTR_B	2
+#define GFX_INTR_A	1
+#define RESERVED_INTR	0
+
+/* INT_PEND1 hard-coded bits: */
+#define MSC_PANIC_INTR	63
+#define NI_ERROR_INTR	62
+#define MD_COR_ERR_INTR	61
+#define COR_ERR_INTR_B	60
+#define COR_ERR_INTR_A	59
+#define CLK_ERR_INTR	58
+
+# define NACK_INT_B	57
+# define NACK_INT_A	56
+# define LB_ERROR	55
+# define XB_ERROR	54
+
+#define BRIDGE_ERROR_INTR 53	/* Setup by PROM to catch Bridge Errors */
+
+#define IP27_INTR_0	52	/* Reserved for PROM use */
+#define IP27_INTR_1	51	/*   (do not use in Kernel) */
+#define IP27_INTR_2	50
+#define IP27_INTR_3	49
+#define IP27_INTR_4	48
+#define IP27_INTR_5	47
+#define IP27_INTR_6	46
+#define IP27_INTR_7	45
+
+#define	TLB_INTR_B	44	/* used for tlb flush random */
+#define	TLB_INTR_A	43
+
+#define LLP_PFAIL_INTR_B 42	/* see ml/SN/SN0/sysctlr.c */
+#define LLP_PFAIL_INTR_A 41
+
+#define NI_BRDCAST_ERR_B 40
+#define NI_BRDCAST_ERR_A 39
+
+# define IO_ERROR_INTR	38	/* set up by prom */
+# define DEBUG_INTR_B	37	/* used by symmon to stop all cpus */
+# define DEBUG_INTR_A	36
+
+// These aren't strictly accurate or complete.  See the
+// Synergy Spec. for details.
+#define SGI_UART_IRQ	(65)
+#define SGI_HUB_ERROR_IRQ	(182)
+
+#endif /* _ASM_IA64_SN_SN1_INTR_H */