arch/x86/include/asm/uv/uv_bau.h - kernel/msm-4.9 - Gitiles

 /*
  * 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.
  *
  * SGI UV Broadcast Assist Unit definitions
  *
  * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
  */

 #ifndef _ASM_X86_UV_UV_BAU_H
 #define _ASM_X86_UV_UV_BAU_H

 #include <linux/bitmap.h>
 #define BITSPERBYTE 8

 /*
  * Broadcast Assist Unit messaging structures
  *
  * Selective Broadcast activations are induced by software action
  * specifying a particular 8-descriptor "set" via a 6-bit index written
  * to an MMR.
  * Thus there are 64 unique 512-byte sets of SB descriptors - one set for
  * each 6-bit index value. These descriptor sets are mapped in sequence
  * starting with set 0 located at the address specified in the
  * BAU_SB_DESCRIPTOR_BASE register, set 1 is located at BASE + 512,
  * set 2 is at BASE + 2*512, set 3 at BASE + 3*512, and so on.
  *
  * We will use 31 sets, one for sending BAU messages from each of the 32
  * cpu's on the node.
  *
  * TLB shootdown will use the first of the 8 descriptors of each set.
  * Each of the descriptors is 64 bytes in size (8*64 = 512 bytes in a set).
  */

 #define UV_ITEMS_PER_DESCRIPTOR		8
 #define UV_CPUS_PER_ACT_STATUS		32
 #define UV_ACT_STATUS_MASK		0x3
 #define UV_ACT_STATUS_SIZE		2
 #define UV_ACTIVATION_DESCRIPTOR_SIZE	32
 #define UV_DISTRIBUTION_SIZE		256
 #define UV_SW_ACK_NPENDING		8
 #define UV_NET_ENDPOINT_INTD		0x38
 #define UV_DESC_BASE_PNODE_SHIFT	49
 #define UV_PAYLOADQ_PNODE_SHIFT		49
 #define UV_PTC_BASENAME			"sgi_uv/ptc_statistics"
 #define uv_physnodeaddr(x)		((__pa((unsigned long)(x)) & uv_mmask))

 /*
  * bits in UVH_LB_BAU_SB_ACTIVATION_STATUS_0/1
  */
 #define DESC_STATUS_IDLE		0
 #define DESC_STATUS_ACTIVE		1
 #define DESC_STATUS_DESTINATION_TIMEOUT	2
 #define DESC_STATUS_SOURCE_TIMEOUT	3

 /*
  * source side threshholds at which message retries print a warning
  */
 #define SOURCE_TIMEOUT_LIMIT		20
 #define DESTINATION_TIMEOUT_LIMIT	20

 /*
  * number of entries in the destination side payload queue
  */
 #define DEST_Q_SIZE			17
 /*
  * number of destination side software ack resources
  */
 #define DEST_NUM_RESOURCES		8
 #define MAX_CPUS_PER_NODE		32
 /*
  * completion statuses for sending a TLB flush message
  */
 #define	FLUSH_RETRY			1
 #define	FLUSH_GIVEUP			2
 #define	FLUSH_COMPLETE			3

 /*
  * Distribution: 32 bytes (256 bits) (bytes 0-0x1f of descriptor)
  * If the 'multilevel' flag in the header portion of the descriptor
  * has been set to 0, then endpoint multi-unicast mode is selected.
  * The distribution specification (32 bytes) is interpreted as a 256-bit
  * distribution vector. Adjacent bits correspond to consecutive even numbered
  * nodeIDs. The result of adding the index of a given bit to the 15-bit
  * 'base_dest_nodeid' field of the header corresponds to the
  * destination nodeID associated with that specified bit.
  */
 struct bau_target_nodemask {
 	unsigned long bits[BITS_TO_LONGS(256)];
 };

 /*
  * mask of cpu's on a node
  * (during initialization we need to check that unsigned long has
  *  enough bits for max. cpu's per node)
  */
 struct bau_local_cpumask {
 	unsigned long bits;
 };

 /*
  * Payload: 16 bytes (128 bits) (bytes 0x20-0x2f of descriptor)
  * only 12 bytes (96 bits) of the payload area are usable.
  * An additional 3 bytes (bits 27:4) of the header address are carried
  * to the next bytes of the destination payload queue.
  * And an additional 2 bytes of the header Suppl_A field are also
  * carried to the destination payload queue.
  * But the first byte of the Suppl_A becomes bits 127:120 (the 16th byte)
  * of the destination payload queue, which is written by the hardware
  * with the s/w ack resource bit vector.
  * [ effective message contents (16 bytes (128 bits) maximum), not counting
  *   the s/w ack bit vector  ]
  */

 /*
  * The payload is software-defined for INTD transactions
  */
 struct bau_msg_payload {
 	unsigned long address;		/* signifies a page or all TLB's
 						of the cpu */
 	/* 64 bits */
 	unsigned short sending_cpu;	/* filled in by sender */
 	/* 16 bits */
 	unsigned short acknowledge_count;/* filled in by destination */
 	/* 16 bits */
 	unsigned int reserved1:32;	/* not usable */
 };


 /*
  * Message header:  16 bytes (128 bits) (bytes 0x30-0x3f of descriptor)
  * see table 4.2.3.0.1 in broacast_assist spec.
  */
 struct bau_msg_header {
 	int dest_subnodeid:6;	/* must be zero */
 	/* bits 5:0 */
 	int base_dest_nodeid:15; /* nasid>>1 (pnode) of first bit in node_map */
 	/* bits 20:6 */
 	int command:8;		/* message type */
 	/* bits 28:21 */
 				/* 0x38: SN3net EndPoint Message */
 	int rsvd_1:3;		/* must be zero */
 	/* bits 31:29 */
 				/* int will align on 32 bits */
 	int rsvd_2:9;		/* must be zero */
 	/* bits 40:32 */
 				/* Suppl_A is 56-41 */
 	int payload_2a:8;	/* becomes byte 16 of msg */
 	/* bits 48:41 */	/* not currently using */
 	int payload_2b:8;	/* becomes byte 17 of msg */
 	/* bits 56:49 */	/* not currently using */
 				/* Address field (96:57) is never used as an
 				   address (these are address bits 42:3) */
 	int rsvd_3:1;		/* must be zero */
 	/* bit 57 */
 				/* address bits 27:4 are payload */
 				/* these 24 bits become bytes 12-14 of msg */
 	int replied_to:1;	/* sent as 0 by the source to byte 12 */
 	/* bit 58 */

 	int payload_1a:5;	/* not currently used */
 	/* bits 63:59 */
 	int payload_1b:8;	/* not currently used */
 	/* bits 71:64 */
 	int payload_1c:8;	/* not currently used */
 	/* bits 79:72 */
 	int payload_1d:2;	/* not currently used */
 	/* bits 81:80 */

 	int rsvd_4:7;		/* must be zero */
 	/* bits 88:82 */
 	int sw_ack_flag:1;	/* software acknowledge flag */
 	/* bit 89 */
 				/* INTD trasactions at destination are to
 				   wait for software acknowledge */
 	int rsvd_5:6;		/* must be zero */
 	/* bits 95:90 */
 	int rsvd_6:5;		/* must be zero */
 	/* bits 100:96 */
 	int int_both:1;		/* if 1, interrupt both sockets on the blade */
 	/* bit 101*/
 	int fairness:3;		/* usually zero */
 	/* bits 104:102 */
 	int multilevel:1;	/* multi-level multicast format */
 	/* bit 105 */
 				/* 0 for TLB: endpoint multi-unicast messages */
 	int chaining:1;		/* next descriptor is part of this activation*/
 	/* bit 106 */
 	int rsvd_7:21;		/* must be zero */
 	/* bits 127:107 */
 };

 /*
  * The activation descriptor:
  * The format of the message to send, plus all accompanying control
  * Should be 64 bytes
  */
 struct bau_desc {
 	struct bau_target_nodemask distribution;
 	/*
 	 * message template, consisting of header and payload:
 	 */
 	struct bau_msg_header header;
 	struct bau_msg_payload payload;
 };
 /*
  *   -payload--    ---------header------
  *   bytes 0-11    bits 41-56  bits 58-81
  *       A           B  (2)      C (3)
  *
  *            A/B/C are moved to:
  *       A            C          B
  *   bytes 0-11  bytes 12-14  bytes 16-17  (byte 15 filled in by hw as vector)
  *   ------------payload queue-----------
  */

 /*
  * The payload queue on the destination side is an array of these.
  * With BAU_MISC_CONTROL set for software acknowledge mode, the messages
  * are 32 bytes (2 micropackets) (256 bits) in length, but contain only 17
  * bytes of usable data, including the sw ack vector in byte 15 (bits 127:120)
  * (12 bytes come from bau_msg_payload, 3 from payload_1, 2 from
  *  sw_ack_vector and payload_2)
  * "Enabling Software Acknowledgment mode (see Section 4.3.3 Software
  *  Acknowledge Processing) also selects 32 byte (17 bytes usable) payload
  *  operation."
  */
 struct bau_payload_queue_entry {
 	unsigned long address;		/* signifies a page or all TLB's
 						of the cpu */
 	/* 64 bits, bytes 0-7 */

 	unsigned short sending_cpu;	/* cpu that sent the message */
 	/* 16 bits, bytes 8-9 */

 	unsigned short acknowledge_count; /* filled in by destination */
 	/* 16 bits, bytes 10-11 */

 	unsigned short replied_to:1;	/* sent as 0 by the source */
 	/* 1 bit */
 	unsigned short unused1:7;       /* not currently using */
 	/* 7 bits: byte 12) */

 	unsigned char unused2[2];	/* not currently using */
 	/* bytes 13-14 */

 	unsigned char sw_ack_vector;	/* filled in by the hardware */
 	/* byte 15 (bits 127:120) */

 	unsigned char unused4[3];	/* not currently using bytes 17-19 */
 	/* bytes 17-19 */

 	int number_of_cpus;		/* filled in at destination */
 	/* 32 bits, bytes 20-23 (aligned) */

 	unsigned char unused5[8];       /* not using */
 	/* bytes 24-31 */
 };

 /*
  * one for every slot in the destination payload queue
  */
 struct bau_msg_status {
 	struct bau_local_cpumask seen_by;	/* map of cpu's */
 };

 /*
  * one for every slot in the destination software ack resources
  */
 struct bau_sw_ack_status {
 	struct bau_payload_queue_entry *msg;	/* associated message */
 	int watcher;				/* cpu monitoring, or -1 */
 };

 /*
  * one on every node and per-cpu; to locate the software tables
  */
 struct bau_control {
 	struct bau_desc *descriptor_base;
 	struct bau_payload_queue_entry *bau_msg_head;
 	struct bau_payload_queue_entry *va_queue_first;
 	struct bau_payload_queue_entry *va_queue_last;
 	struct bau_msg_status *msg_statuses;
 	int *watching; /* pointer to array */
 };

 /*
  * This structure is allocated per_cpu for UV TLB shootdown statistics.
  */
 struct ptc_stats {
 	unsigned long ptc_i;	/* number of IPI-style flushes */
 	unsigned long requestor;	/* number of nodes this cpu sent to */
 	unsigned long requestee;	/* times cpu was remotely requested */
 	unsigned long alltlb;	/* times all tlb's on this cpu were flushed */
 	unsigned long onetlb;	/* times just one tlb on this cpu was flushed */
 	unsigned long s_retry;	/* retries on source side timeouts */
 	unsigned long d_retry;	/* retries on destination side timeouts */
 	unsigned long sflush;	/* cycles spent in uv_flush_tlb_others */
 	unsigned long dflush;	/* cycles spent on destination side */
 	unsigned long retriesok; /* successes on retries */
 	unsigned long nomsg;	/* interrupts with no message */
 	unsigned long multmsg;	/* interrupts with multiple messages */
 	unsigned long ntargeted;/* nodes targeted */
 };

 static inline int bau_node_isset(int node, struct bau_target_nodemask *dstp)
 {
 	return constant_test_bit(node, &dstp->bits[0]);
 }
 static inline void bau_node_set(int node, struct bau_target_nodemask *dstp)
 {
 	__set_bit(node, &dstp->bits[0]);
 }
 static inline void bau_nodes_clear(struct bau_target_nodemask *dstp, int nbits)
 {
 	bitmap_zero(&dstp->bits[0], nbits);
 }

 static inline void bau_cpubits_clear(struct bau_local_cpumask *dstp, int nbits)
 {
 	bitmap_zero(&dstp->bits, nbits);
 }

 #define cpubit_isset(cpu, bau_local_cpumask) \
 	test_bit((cpu), (bau_local_cpumask).bits)

 extern int uv_flush_tlb_others(cpumask_t *, struct mm_struct *, unsigned long);
 extern void uv_bau_message_intr1(void);
 extern void uv_bau_timeout_intr1(void);

 #endif /* _ASM_X86_UV_UV_BAU_H */
	/*
	* 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.
	*
	* SGI UV Broadcast Assist Unit definitions
	*
	* Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
	*/

	#ifndef _ASM_X86_UV_UV_BAU_H
	#define _ASM_X86_UV_UV_BAU_H

	#include <linux/bitmap.h>
	#define BITSPERBYTE 8

	/*
	* Broadcast Assist Unit messaging structures
	*
	* Selective Broadcast activations are induced by software action
	* specifying a particular 8-descriptor "set" via a 6-bit index written
	* to an MMR.
	* Thus there are 64 unique 512-byte sets of SB descriptors - one set for
	* each 6-bit index value. These descriptor sets are mapped in sequence
	* starting with set 0 located at the address specified in the
	* BAU_SB_DESCRIPTOR_BASE register, set 1 is located at BASE + 512,
	* set 2 is at BASE + 2512, set 3 at BASE + 3512, and so on.
	*
	* We will use 31 sets, one for sending BAU messages from each of the 32
	* cpu's on the node.
	*
	* TLB shootdown will use the first of the 8 descriptors of each set.
	* Each of the descriptors is 64 bytes in size (8*64 = 512 bytes in a set).
	*/

	#define UV_ITEMS_PER_DESCRIPTOR 8
	#define UV_CPUS_PER_ACT_STATUS 32
	#define UV_ACT_STATUS_MASK 0x3
	#define UV_ACT_STATUS_SIZE 2
	#define UV_ACTIVATION_DESCRIPTOR_SIZE 32
	#define UV_DISTRIBUTION_SIZE 256
	#define UV_SW_ACK_NPENDING 8
	#define UV_NET_ENDPOINT_INTD 0x38
	#define UV_DESC_BASE_PNODE_SHIFT 49
	#define UV_PAYLOADQ_PNODE_SHIFT 49
	#define UV_PTC_BASENAME "sgi_uv/ptc_statistics"
	#define uv_physnodeaddr(x) ((__pa((unsigned long)(x)) & uv_mmask))

	/*
	* bits in UVH_LB_BAU_SB_ACTIVATION_STATUS_0/1
	*/
	#define DESC_STATUS_IDLE 0
	#define DESC_STATUS_ACTIVE 1
	#define DESC_STATUS_DESTINATION_TIMEOUT 2
	#define DESC_STATUS_SOURCE_TIMEOUT 3

	/*
	* source side threshholds at which message retries print a warning
	*/
	#define SOURCE_TIMEOUT_LIMIT 20
	#define DESTINATION_TIMEOUT_LIMIT 20

	/*
	* number of entries in the destination side payload queue
	*/
	#define DEST_Q_SIZE 17
	/*
	* number of destination side software ack resources
	*/
	#define DEST_NUM_RESOURCES 8
	#define MAX_CPUS_PER_NODE 32
	/*
	* completion statuses for sending a TLB flush message
	*/
	#define FLUSH_RETRY 1
	#define FLUSH_GIVEUP 2
	#define FLUSH_COMPLETE 3

	/*
	* Distribution: 32 bytes (256 bits) (bytes 0-0x1f of descriptor)
	* If the 'multilevel' flag in the header portion of the descriptor
	* has been set to 0, then endpoint multi-unicast mode is selected.
	* The distribution specification (32 bytes) is interpreted as a 256-bit
	* distribution vector. Adjacent bits correspond to consecutive even numbered
	* nodeIDs. The result of adding the index of a given bit to the 15-bit
	* 'base_dest_nodeid' field of the header corresponds to the
	* destination nodeID associated with that specified bit.
	*/
	struct bau_target_nodemask {
	unsigned long bits[BITS_TO_LONGS(256)];
	};

	/*
	* mask of cpu's on a node
	* (during initialization we need to check that unsigned long has
	* enough bits for max. cpu's per node)
	*/
	struct bau_local_cpumask {
	unsigned long bits;
	};

	/*
	* Payload: 16 bytes (128 bits) (bytes 0x20-0x2f of descriptor)
	* only 12 bytes (96 bits) of the payload area are usable.
	* An additional 3 bytes (bits 27:4) of the header address are carried
	* to the next bytes of the destination payload queue.
	* And an additional 2 bytes of the header Suppl_A field are also
	* carried to the destination payload queue.
	* But the first byte of the Suppl_A becomes bits 127:120 (the 16th byte)
	* of the destination payload queue, which is written by the hardware
	* with the s/w ack resource bit vector.
	* [ effective message contents (16 bytes (128 bits) maximum), not counting
	* the s/w ack bit vector ]
	*/

	/*
	* The payload is software-defined for INTD transactions
	*/
	struct bau_msg_payload {
	unsigned long address; /* signifies a page or all TLB's
	of the cpu */
	/* 64 bits */
	unsigned short sending_cpu; /* filled in by sender */
	/* 16 bits */
	unsigned short acknowledge_count;/* filled in by destination */
	/* 16 bits */
	unsigned int reserved1:32; /* not usable */
	};


	/*
	* Message header: 16 bytes (128 bits) (bytes 0x30-0x3f of descriptor)
	* see table 4.2.3.0.1 in broacast_assist spec.
	*/
	struct bau_msg_header {
	int dest_subnodeid:6; /* must be zero */
	/* bits 5:0 */
	int base_dest_nodeid:15; /* nasid>>1 (pnode) of first bit in node_map */
	/* bits 20:6 */
	int command:8; /* message type */
	/* bits 28:21 */
	/* 0x38: SN3net EndPoint Message */
	int rsvd_1:3; /* must be zero */
	/* bits 31:29 */
	/* int will align on 32 bits */
	int rsvd_2:9; /* must be zero */
	/* bits 40:32 */
	/* Suppl_A is 56-41 */
	int payload_2a:8; /* becomes byte 16 of msg */
	/* bits 48:41 / / not currently using */
	int payload_2b:8; /* becomes byte 17 of msg */
	/* bits 56:49 / / not currently using */
	/* Address field (96:57) is never used as an
	address (these are address bits 42:3) */
	int rsvd_3:1; /* must be zero */
	/* bit 57 */
	/* address bits 27:4 are payload */
	/* these 24 bits become bytes 12-14 of msg */
	int replied_to:1; /* sent as 0 by the source to byte 12 */
	/* bit 58 */

	int payload_1a:5; /* not currently used */
	/* bits 63:59 */
	int payload_1b:8; /* not currently used */
	/* bits 71:64 */
	int payload_1c:8; /* not currently used */
	/* bits 79:72 */
	int payload_1d:2; /* not currently used */
	/* bits 81:80 */

	int rsvd_4:7; /* must be zero */
	/* bits 88:82 */
	int sw_ack_flag:1; /* software acknowledge flag */
	/* bit 89 */
	/* INTD trasactions at destination are to
	wait for software acknowledge */
	int rsvd_5:6; /* must be zero */
	/* bits 95:90 */
	int rsvd_6:5; /* must be zero */
	/* bits 100:96 */
	int int_both:1; /* if 1, interrupt both sockets on the blade */
	/* bit 101*/
	int fairness:3; /* usually zero */
	/* bits 104:102 */
	int multilevel:1; /* multi-level multicast format */
	/* bit 105 */
	/* 0 for TLB: endpoint multi-unicast messages */
	int chaining:1; /* next descriptor is part of this activation*/
	/* bit 106 */
	int rsvd_7:21; /* must be zero */
	/* bits 127:107 */
	};

	/*
	* The activation descriptor:
	* The format of the message to send, plus all accompanying control
	* Should be 64 bytes
	*/
	struct bau_desc {
	struct bau_target_nodemask distribution;
	/*
	* message template, consisting of header and payload:
	*/
	struct bau_msg_header header;
	struct bau_msg_payload payload;
	};
	/*
	* -payload-- ---------header------
	* bytes 0-11 bits 41-56 bits 58-81
	* A B (2) C (3)
	*
	* A/B/C are moved to:
	* A C B
	* bytes 0-11 bytes 12-14 bytes 16-17 (byte 15 filled in by hw as vector)
	* ------------payload queue-----------
	*/

	/*
	* The payload queue on the destination side is an array of these.
	* With BAU_MISC_CONTROL set for software acknowledge mode, the messages
	* are 32 bytes (2 micropackets) (256 bits) in length, but contain only 17
	* bytes of usable data, including the sw ack vector in byte 15 (bits 127:120)
	* (12 bytes come from bau_msg_payload, 3 from payload_1, 2 from
	* sw_ack_vector and payload_2)
	* "Enabling Software Acknowledgment mode (see Section 4.3.3 Software
	* Acknowledge Processing) also selects 32 byte (17 bytes usable) payload
	* operation."
	*/
	struct bau_payload_queue_entry {
	unsigned long address; /* signifies a page or all TLB's
	of the cpu */
	/* 64 bits, bytes 0-7 */

	unsigned short sending_cpu; /* cpu that sent the message */
	/* 16 bits, bytes 8-9 */

	unsigned short acknowledge_count; /* filled in by destination */
	/* 16 bits, bytes 10-11 */

	unsigned short replied_to:1; /* sent as 0 by the source */
	/* 1 bit */
	unsigned short unused1:7; /* not currently using */
	/* 7 bits: byte 12) */

	unsigned char unused2[2]; /* not currently using */
	/* bytes 13-14 */

	unsigned char sw_ack_vector; /* filled in by the hardware */
	/* byte 15 (bits 127:120) */

	unsigned char unused4[3]; /* not currently using bytes 17-19 */
	/* bytes 17-19 */

	int number_of_cpus; /* filled in at destination */
	/* 32 bits, bytes 20-23 (aligned) */

	unsigned char unused5[8]; /* not using */
	/* bytes 24-31 */
	};

	/*
	* one for every slot in the destination payload queue
	*/
	struct bau_msg_status {
	struct bau_local_cpumask seen_by; /* map of cpu's */
	};

	/*
	* one for every slot in the destination software ack resources
	*/
	struct bau_sw_ack_status {
	struct bau_payload_queue_entry msg; / associated message */
	int watcher; /* cpu monitoring, or -1 */
	};

	/*
	* one on every node and per-cpu; to locate the software tables
	*/
	struct bau_control {
	struct bau_desc *descriptor_base;
	struct bau_payload_queue_entry *bau_msg_head;
	struct bau_payload_queue_entry *va_queue_first;
	struct bau_payload_queue_entry *va_queue_last;
	struct bau_msg_status *msg_statuses;
	int watching; / pointer to array */
	};

	/*
	* This structure is allocated per_cpu for UV TLB shootdown statistics.
	*/
	struct ptc_stats {
	unsigned long ptc_i; /* number of IPI-style flushes */
	unsigned long requestor; /* number of nodes this cpu sent to */
	unsigned long requestee; /* times cpu was remotely requested */
	unsigned long alltlb; /* times all tlb's on this cpu were flushed */
	unsigned long onetlb; /* times just one tlb on this cpu was flushed */
	unsigned long s_retry; /* retries on source side timeouts */
	unsigned long d_retry; /* retries on destination side timeouts */
	unsigned long sflush; /* cycles spent in uv_flush_tlb_others */
	unsigned long dflush; /* cycles spent on destination side */
	unsigned long retriesok; /* successes on retries */
	unsigned long nomsg; /* interrupts with no message */
	unsigned long multmsg; /* interrupts with multiple messages */
	unsigned long ntargeted;/* nodes targeted */
	};

	static inline int bau_node_isset(int node, struct bau_target_nodemask *dstp)
	{
	return constant_test_bit(node, &dstp->bits[0]);
	}
	static inline void bau_node_set(int node, struct bau_target_nodemask *dstp)
	{
	__set_bit(node, &dstp->bits[0]);
	}
	static inline void bau_nodes_clear(struct bau_target_nodemask *dstp, int nbits)
	{
	bitmap_zero(&dstp->bits[0], nbits);
	}

	static inline void bau_cpubits_clear(struct bau_local_cpumask *dstp, int nbits)
	{
	bitmap_zero(&dstp->bits, nbits);
	}

	#define cpubit_isset(cpu, bau_local_cpumask) \
	test_bit((cpu), (bau_local_cpumask).bits)

	extern int uv_flush_tlb_others(cpumask_t , struct mm_struct , unsigned long);
	extern void uv_bau_message_intr1(void);
	extern void uv_bau_timeout_intr1(void);

	#endif /* _ASM_X86_UV_UV_BAU_H */