| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Cliff Wickman | 1684 | 82.31% | 21 | 58.33% |
| Andrew Banman | 290 | 14.17% | 7 | 19.44% |
| Jack Steiner | 41 | 2.00% | 1 | 2.78% |
| Steve Wahl | 9 | 0.44% | 1 | 2.78% |
| Benjamin Thiel | 9 | 0.44% | 1 | 2.78% |
| Ingo Molnar | 4 | 0.20% | 1 | 2.78% |
| Thomas Gleixner | 3 | 0.15% | 1 | 2.78% |
| H. Peter Anvin | 3 | 0.15% | 1 | 2.78% |
| James Custer | 2 | 0.10% | 1 | 2.78% |
| Alex Thorlton | 1 | 0.05% | 1 | 2.78% |
| Total | 2046 | 36 |
/* * 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) 2008-2011 Silicon Graphics, Inc. All rights reserved. */ #ifndef _ASM_X86_UV_UV_BAU_H #define _ASM_X86_UV_UV_BAU_H #include <linux/bitmap.h> #include <asm/idtentry.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 one set for sending BAU messages from each of the * cpu's on the uvhub. * * 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 MAX_CPUS_PER_UVHUB 128 #define MAX_CPUS_PER_SOCKET 64 #define ADP_SZ 64 /* hardware-provided max. */ #define UV_CPUS_PER_AS 32 /* hardware-provided max. */ #define ITEMS_PER_DESC 8 /* the 'throttle' to prevent the hardware stay-busy bug */ #define MAX_BAU_CONCURRENT 3 #define UV_ACT_STATUS_MASK 0x3 #define UV_ACT_STATUS_SIZE 2 #define UV_DISTRIBUTION_SIZE 256 #define UV_SW_ACK_NPENDING 8 #define UV_NET_ENDPOINT_INTD 0x28 #define UV_PAYLOADQ_GNODE_SHIFT 49 #define UV_PTC_BASENAME "sgi_uv/ptc_statistics" #define UV_BAU_BASENAME "sgi_uv/bau_tunables" #define UV_BAU_TUNABLES_DIR "sgi_uv" #define UV_BAU_TUNABLES_FILE "bau_tunables" #define WHITESPACE " \t\n" #define cpubit_isset(cpu, bau_local_cpumask) \ test_bit((cpu), (bau_local_cpumask).bits) /* [19:16] SOFT_ACK timeout period 19: 1 is urgency 7 17:16 1 is multiplier */ /* * UV2: Bit 19 selects between * (0): 10 microsecond timebase and * (1): 80 microseconds * we're using 560us */ #define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD (15UL) /* assuming UV3 is the same */ #define BAU_MISC_CONTROL_MULT_MASK 3 #define UVH_AGING_PRESCALE_SEL 0x000000b000UL /* [30:28] URGENCY_7 an index into a table of times */ #define BAU_URGENCY_7_SHIFT 28 #define BAU_URGENCY_7_MASK 7 #define UVH_TRANSACTION_TIMEOUT 0x000000b200UL /* [45:40] BAU - BAU transaction timeout select - a multiplier */ #define BAU_TRANS_SHIFT 40 #define BAU_TRANS_MASK 0x3f /* * shorten some awkward names */ #define AS_PUSH_SHIFT UVH_LB_BAU_SB_ACTIVATION_CONTROL_PUSH_SHFT #define SOFTACK_MSHIFT UVH_LB_BAU_MISC_CONTROL_ENABLE_INTD_SOFT_ACK_MODE_SHFT #define SOFTACK_PSHIFT UVH_LB_BAU_MISC_CONTROL_INTD_SOFT_ACK_TIMEOUT_PERIOD_SHFT #define SOFTACK_TIMEOUT_PERIOD UV_INTD_SOFT_ACK_TIMEOUT_PERIOD #define PREFETCH_HINT_SHFT UV3H_LB_BAU_MISC_CONTROL_ENABLE_INTD_PREFETCH_HINT_SHFT #define SB_STATUS_SHFT UV3H_LB_BAU_MISC_CONTROL_ENABLE_EXTENDED_SB_STATUS_SHFT #define write_gmmr uv_write_global_mmr64 #define write_lmmr uv_write_local_mmr #define read_lmmr uv_read_local_mmr #define read_gmmr uv_read_global_mmr64 /* * bits in UVH_LB_BAU_SB_ACTIVATION_STATUS_0/1 */ #define DS_IDLE 0 #define DS_ACTIVE 1 #define DS_DESTINATION_TIMEOUT 2 #define DS_SOURCE_TIMEOUT 3 /* * bits put together from HRP_LB_BAU_SB_ACTIVATION_STATUS_0/1/2 * values 1 and 3 will not occur * Decoded meaning ERROR BUSY AUX ERR * ------------------------------- ---- ----- ------- * IDLE 0 0 0 * BUSY (active) 0 1 0 * SW Ack Timeout (destination) 1 0 0 * SW Ack INTD rejected (strong NACK) 1 0 1 * Source Side Time Out Detected 1 1 0 * Destination Side PUT Failed 1 1 1 */ #define UV2H_DESC_IDLE 0 #define UV2H_DESC_BUSY 2 #define UV2H_DESC_DEST_TIMEOUT 4 #define UV2H_DESC_DEST_STRONG_NACK 5 #define UV2H_DESC_SOURCE_TIMEOUT 6 #define UV2H_DESC_DEST_PUT_ERR 7 /* * delay for 'plugged' timeout retries, in microseconds */ #define PLUGGED_DELAY 10 /* * threshholds at which to use IPI to free resources */ /* after this # consecutive 'plugged' timeouts, use IPI to release resources */ #define PLUGSB4RESET 100 /* after this many consecutive timeouts, use IPI to release resources */ #define TIMEOUTSB4RESET 1 /* at this number uses of IPI to release resources, giveup the request */ #define IPI_RESET_LIMIT 1 /* after this # consecutive successes, bump up the throttle if it was lowered */ #define COMPLETE_THRESHOLD 5 /* after this # of giveups (fall back to kernel IPI's) disable the use of the BAU for a period of time */ #define GIVEUP_LIMIT 100 #define UV_LB_SUBNODEID 0x10 #define UV_SA_SHFT UVH_LB_BAU_MISC_CONTROL_INTD_SOFT_ACK_TIMEOUT_PERIOD_SHFT #define UV_SA_MASK UVH_LB_BAU_MISC_CONTROL_INTD_SOFT_ACK_TIMEOUT_PERIOD_MASK /* 4 bits of software ack period */ #define UV2_ACK_MASK 0x7UL #define UV2_ACK_UNITS_SHFT 3 #define UV2_EXT_SHFT UV2H_LB_BAU_MISC_CONTROL_ENABLE_EXTENDED_SB_STATUS_SHFT /* * number of entries in the destination side payload queue */ #define DEST_Q_SIZE 20 /* * number of destination side software ack resources */ #define DEST_NUM_RESOURCES 8 /* * completion statuses for sending a TLB flush message */ #define FLUSH_RETRY_PLUGGED 1 #define FLUSH_RETRY_TIMEOUT 2 #define FLUSH_GIVEUP 3 #define FLUSH_COMPLETE 4 /* * tuning the action when the numalink network is extremely delayed */ #define CONGESTED_RESPONSE_US 1000 /* 'long' response time, in microseconds */ #define CONGESTED_REPS 10 /* long delays averaged over this many broadcasts */ #define DISABLED_PERIOD 10 /* time for the bau to be disabled, in seconds */ /* see msg_type: */ #define MSG_NOOP 0 #define MSG_REGULAR 1 #define MSG_RETRY 2 #define BAU_DESC_QUALIFIER 0x534749 enum uv_bau_version { UV_BAU_V2 = 2, UV_BAU_V3, UV_BAU_V4, }; /* * 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_nasid' field of the header corresponds to the * destination nodeID associated with that specified bit. */ struct pnmask { unsigned long bits[BITS_TO_LONGS(UV_DISTRIBUTION_SIZE)]; }; /* * mask of cpu's on a uvhub * (during initialization we need to check that unsigned long has * enough bits for max. cpu's per uvhub) */ 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 ] */ /** * struct uv2_3_bau_msg_payload - defines payload for INTD transactions * @address: Signifies a page or all TLB's of the cpu * @sending_cpu: CPU from which the message originates * @acknowledge_count: CPUs on the destination Hub that received the interrupt */ struct uv2_3_bau_msg_payload { u64 address; u16 sending_cpu; u16 acknowledge_count; }; /** * struct uv4_bau_msg_payload - defines payload for INTD transactions * @address: Signifies a page or all TLB's of the cpu * @sending_cpu: CPU from which the message originates * @acknowledge_count: CPUs on the destination Hub that received the interrupt * @qualifier: Set by source to verify origin of INTD broadcast */ struct uv4_bau_msg_payload { u64 address; u16 sending_cpu; u16 acknowledge_count; u32 reserved:8; u32 qualifier:24; }; /* * UV2 Message header: 16 bytes (128 bits) (bytes 0x30-0x3f of descriptor) * see figure 9-2 of harp_sys.pdf * assuming UV3 is the same */ struct uv2_3_bau_msg_header { unsigned int base_dest_nasid:15; /* nasid of the first bit */ /* bits 14:0 */ /* in uvhub map */ unsigned int dest_subnodeid:5; /* must be 0x10, for the LB */ /* bits 19:15 */ unsigned int rsvd_1:1; /* must be zero */ /* bit 20 */ /* Address bits 59:21 */ /* bits 25:2 of address (44:21) are payload */ /* these next 24 bits become bytes 12-14 of msg */ /* bits 28:21 land in byte 12 */ unsigned int replied_to:1; /* sent as 0 by the source to byte 12 */ /* bit 21 */ unsigned int msg_type:3; /* software type of the message */ /* bits 24:22 */ unsigned int canceled:1; /* message canceled, resource is to be freed*/ /* bit 25 */ unsigned int payload_1:3; /* not currently used */ /* bits 28:26 */ /* bits 36:29 land in byte 13 */ unsigned int payload_2a:3; /* not currently used */ unsigned int payload_2b:5; /* not currently used */ /* bits 36:29 */ /* bits 44:37 land in byte 14 */ unsigned int payload_3:8; /* not currently used */ /* bits 44:37 */ unsigned int rsvd_2:7; /* reserved */ /* bits 51:45 */ unsigned int swack_flag:1; /* software acknowledge flag */ /* bit 52 */ unsigned int rsvd_3a:3; /* must be zero */ unsigned int rsvd_3b:8; /* must be zero */ unsigned int rsvd_3c:8; /* must be zero */ unsigned int rsvd_3d:3; /* must be zero */ /* bits 74:53 */ unsigned int fairness:3; /* usually zero */ /* bits 77:75 */ unsigned int sequence:16; /* message sequence number */ /* bits 93:78 Suppl_A */ unsigned int chaining:1; /* next descriptor is part of this activation*/ /* bit 94 */ unsigned int multilevel:1; /* multi-level multicast format */ /* bit 95 */ unsigned int rsvd_4:24; /* ordered / source node / source subnode / aging must be zero */ /* bits 119:96 */ unsigned int command:8; /* message type */ /* bits 127:120 */ }; /* * The activation descriptor: * The format of the message to send, plus all accompanying control * Should be 64 bytes */ struct bau_desc { struct pnmask distribution; /* * message template, consisting of header and payload: */ union bau_msg_header { struct uv2_3_bau_msg_header uv2_3_hdr; } header; union bau_payload_header { struct uv2_3_bau_msg_payload uv2_3; struct uv4_bau_msg_payload uv4; } payload; }; /* UV2: * -payload-- ---------header------ * bytes 0-11 bits 70-78 bits 21-44 * 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 * swack_vec 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_pq_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 */ /* these next 3 bytes come from bits 58-81 of the message header */ unsigned short replied_to:1; /* sent as 0 by the source */ unsigned short msg_type:3; /* software message type */ unsigned short canceled:1; /* sent as 0 by the source */ unsigned short unused1:3; /* not currently using */ /* byte 12 */ unsigned char unused2a; /* not currently using */ /* byte 13 */ unsigned char unused2; /* not currently using */ /* byte 14 */ unsigned char swack_vec; /* filled in by the hardware */ /* byte 15 (bits 127:120) */ unsigned short sequence; /* message sequence number */ /* bytes 16-17 */ unsigned char unused4[2]; /* not currently using bytes 18-19 */ /* bytes 18-19 */ int number_of_cpus; /* filled in at destination */ /* 32 bits, bytes 20-23 (aligned) */ unsigned char unused5[8]; /* not using */ /* bytes 24-31 */ }; struct msg_desc { struct bau_pq_entry *msg; int msg_slot; struct bau_pq_entry *queue_first; struct bau_pq_entry *queue_last; }; struct reset_args { int sender; }; /* * This structure is allocated per_cpu for UV TLB shootdown statistics. */ struct ptc_stats { /* sender statistics */ unsigned long s_giveup; /* number of fall backs to IPI-style flushes */ unsigned long s_requestor; /* number of shootdown requests */ unsigned long s_stimeout; /* source side timeouts */ unsigned long s_dtimeout; /* destination side timeouts */ unsigned long s_strongnacks; /* number of strong nack's */ unsigned long s_time; /* time spent in sending side */ unsigned long s_retriesok; /* successful retries */ unsigned long s_ntargcpu; /* total number of cpu's targeted */ unsigned long s_ntargself; /* times the sending cpu was targeted */ unsigned long s_ntarglocals; /* targets of cpus on the local blade */ unsigned long s_ntargremotes; /* targets of cpus on remote blades */ unsigned long s_ntarglocaluvhub; /* targets of the local hub */ unsigned long s_ntargremoteuvhub; /* remotes hubs targeted */ unsigned long s_ntarguvhub; /* total number of uvhubs targeted */ unsigned long s_ntarguvhub16; /* number of times target hubs >= 16*/ unsigned long s_ntarguvhub8; /* number of times target hubs >= 8 */ unsigned long s_ntarguvhub4; /* number of times target hubs >= 4 */ unsigned long s_ntarguvhub2; /* number of times target hubs >= 2 */ unsigned long s_ntarguvhub1; /* number of times target hubs == 1 */ unsigned long s_resets_plug; /* ipi-style resets from plug state */ unsigned long s_resets_timeout; /* ipi-style resets from timeouts */ unsigned long s_busy; /* status stayed busy past s/w timer */ unsigned long s_throttles; /* waits in throttle */ unsigned long s_retry_messages; /* retry broadcasts */ unsigned long s_bau_reenabled; /* for bau enable/disable */ unsigned long s_bau_disabled; /* for bau enable/disable */ unsigned long s_uv2_wars; /* uv2 workaround, perm. busy */ unsigned long s_uv2_wars_hw; /* uv2 workaround, hiwater */ unsigned long s_uv2_war_waits; /* uv2 workaround, long waits */ unsigned long s_overipilimit; /* over the ipi reset limit */ unsigned long s_giveuplimit; /* disables, over giveup limit*/ unsigned long s_enters; /* entries to the driver */ unsigned long s_ipifordisabled; /* fall back to IPI; disabled */ unsigned long s_plugged; /* plugged by h/w bug*/ unsigned long s_congested; /* giveup on long wait */ /* destination statistics */ unsigned long d_alltlb; /* times all tlb's on this cpu were flushed */ unsigned long d_onetlb; /* times just one tlb on this cpu was flushed */ unsigned long d_multmsg; /* interrupts with multiple messages */ unsigned long d_nomsg; /* interrupts with no message */ unsigned long d_time; /* time spent on destination side */ unsigned long d_requestee; /* number of messages processed */ unsigned long d_retries; /* number of retry messages processed */ unsigned long d_canceled; /* number of messages canceled by retries */ unsigned long d_nocanceled; /* retries that found nothing to cancel */ unsigned long d_resets; /* number of ipi-style requests processed */ unsigned long d_rcanceled; /* number of messages canceled by resets */ }; struct tunables { int *tunp; int deflt; }; struct hub_and_pnode { short uvhub; short pnode; }; struct socket_desc { short num_cpus; short cpu_number[MAX_CPUS_PER_SOCKET]; }; struct uvhub_desc { unsigned short socket_mask; short num_cpus; short uvhub; short pnode; struct socket_desc socket[2]; }; /** * struct bau_control * @status_mmr: location of status mmr, determined by uvhub_cpu * @status_index: index of ERR|BUSY bits in status mmr, determined by uvhub_cpu * * Per-cpu control struct containing CPU topology information and BAU tuneables. */ struct bau_control { struct bau_desc *descriptor_base; struct bau_pq_entry *queue_first; struct bau_pq_entry *queue_last; struct bau_pq_entry *bau_msg_head; struct bau_control *uvhub_master; struct bau_control *socket_master; struct ptc_stats *statp; cpumask_t *cpumask; unsigned long timeout_interval; unsigned long set_bau_on_time; atomic_t active_descriptor_count; int plugged_tries; int timeout_tries; int ipi_attempts; int conseccompletes; u64 status_mmr; int status_index; bool nobau; short baudisabled; short cpu; short osnode; short uvhub_cpu; short uvhub; short uvhub_version; short cpus_in_socket; short cpus_in_uvhub; short partition_base_pnode; short busy; /* all were busy (war) */ unsigned short message_number; unsigned short uvhub_quiesce; short socket_acknowledge_count[DEST_Q_SIZE]; cycles_t send_message; cycles_t period_end; cycles_t period_time; spinlock_t uvhub_lock; spinlock_t queue_lock; spinlock_t disable_lock; /* tunables */ int max_concurr; int max_concurr_const; int plugged_delay; int plugsb4reset; int timeoutsb4reset; int ipi_reset_limit; int complete_threshold; int cong_response_us; int cong_reps; cycles_t disabled_period; int period_giveups; int giveup_limit; long period_requests; struct hub_and_pnode *thp; }; /* Abstracted BAU functions */ struct bau_operations { unsigned long (*read_l_sw_ack)(void); unsigned long (*read_g_sw_ack)(int pnode); unsigned long (*bau_gpa_to_offset)(unsigned long vaddr); void (*write_l_sw_ack)(unsigned long mmr); void (*write_g_sw_ack)(int pnode, unsigned long mmr); void (*write_payload_first)(int pnode, unsigned long mmr); void (*write_payload_last)(int pnode, unsigned long mmr); int (*wait_completion)(struct bau_desc*, struct bau_control*, long try); }; static inline void write_mmr_data_broadcast(int pnode, unsigned long mmr_image) { write_gmmr(pnode, UVH_BAU_DATA_BROADCAST, mmr_image); } static inline void write_mmr_descriptor_base(int pnode, unsigned long mmr_image) { write_gmmr(pnode, UVH_LB_BAU_SB_DESCRIPTOR_BASE, mmr_image); } static inline void write_mmr_activation(unsigned long index) { write_lmmr(UVH_LB_BAU_SB_ACTIVATION_CONTROL, index); } static inline void write_gmmr_activation(int pnode, unsigned long mmr_image) { write_gmmr(pnode, UVH_LB_BAU_SB_ACTIVATION_CONTROL, mmr_image); } static inline void write_mmr_proc_payload_first(int pnode, unsigned long mmr_image) { write_gmmr(pnode, UV4H_LB_PROC_INTD_QUEUE_FIRST, mmr_image); } static inline void write_mmr_proc_payload_last(int pnode, unsigned long mmr_image) { write_gmmr(pnode, UV4H_LB_PROC_INTD_QUEUE_LAST, mmr_image); } static inline void write_mmr_payload_first(int pnode, unsigned long mmr_image) { write_gmmr(pnode, UVH_LB_BAU_INTD_PAYLOAD_QUEUE_FIRST, mmr_image); } static inline void write_mmr_payload_tail(int pnode, unsigned long mmr_image) { write_gmmr(pnode, UVH_LB_BAU_INTD_PAYLOAD_QUEUE_TAIL, mmr_image); } static inline void write_mmr_payload_last(int pnode, unsigned long mmr_image) { write_gmmr(pnode, UVH_LB_BAU_INTD_PAYLOAD_QUEUE_LAST, mmr_image); } static inline void write_mmr_misc_control(int pnode, unsigned long mmr_image) { write_gmmr(pnode, UVH_LB_BAU_MISC_CONTROL, mmr_image); } static inline unsigned long read_mmr_misc_control(int pnode) { return read_gmmr(pnode, UVH_LB_BAU_MISC_CONTROL); } static inline void write_mmr_sw_ack(unsigned long mr) { uv_write_local_mmr(UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS, mr); } static inline void write_gmmr_sw_ack(int pnode, unsigned long mr) { write_gmmr(pnode, UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS, mr); } static inline unsigned long read_mmr_sw_ack(void) { return read_lmmr(UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE); } static inline unsigned long read_gmmr_sw_ack(int pnode) { return read_gmmr(pnode, UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE); } static inline void write_mmr_proc_sw_ack(unsigned long mr) { uv_write_local_mmr(UV4H_LB_PROC_INTD_SOFT_ACK_CLEAR, mr); } static inline void write_gmmr_proc_sw_ack(int pnode, unsigned long mr) { write_gmmr(pnode, UV4H_LB_PROC_INTD_SOFT_ACK_CLEAR, mr); } static inline unsigned long read_mmr_proc_sw_ack(void) { return read_lmmr(UV4H_LB_PROC_INTD_SOFT_ACK_PENDING); } static inline unsigned long read_gmmr_proc_sw_ack(int pnode) { return read_gmmr(pnode, UV4H_LB_PROC_INTD_SOFT_ACK_PENDING); } static inline void write_mmr_data_config(int pnode, unsigned long mr) { uv_write_global_mmr64(pnode, UVH_BAU_DATA_CONFIG, mr); } static inline int bau_uvhub_isset(int uvhub, struct pnmask *dstp) { return constant_test_bit(uvhub, &dstp->bits[0]); } static inline void bau_uvhub_set(int pnode, struct pnmask *dstp) { __set_bit(pnode, &dstp->bits[0]); } static inline void bau_uvhubs_clear(struct pnmask *dstp, int nbits) { bitmap_zero(&dstp->bits[0], nbits); } static inline int bau_uvhub_weight(struct pnmask *dstp) { return bitmap_weight((unsigned long *)&dstp->bits[0], UV_DISTRIBUTION_SIZE); } static inline void bau_cpubits_clear(struct bau_local_cpumask *dstp, int nbits) { bitmap_zero(&dstp->bits, nbits); } struct atomic_short { short counter; }; /* * atomic_read_short - read a short atomic variable * @v: pointer of type atomic_short * * Atomically reads the value of @v. */ static inline int atomic_read_short(const struct atomic_short *v) { return v->counter; } /* * atom_asr - add and return a short int * @i: short value to add * @v: pointer of type atomic_short * * Atomically adds @i to @v and returns @i + @v */ static inline int atom_asr(short i, struct atomic_short *v) { short __i = i; asm volatile(LOCK_PREFIX "xaddw %0, %1" : "+r" (i), "+m" (v->counter) : : "memory"); return i + __i; } /* * conditionally add 1 to *v, unless *v is >= u * return 0 if we cannot add 1 to *v because it is >= u * return 1 if we can add 1 to *v because it is < u * the add is atomic * * This is close to atomic_add_unless(), but this allows the 'u' value * to be lowered below the current 'v'. atomic_add_unless can only stop * on equal. */ static inline int atomic_inc_unless_ge(spinlock_t *lock, atomic_t *v, int u) { spin_lock(lock); if (atomic_read(v) >= u) { spin_unlock(lock); return 0; } atomic_inc(v); spin_unlock(lock); return 1; } void uv_bau_message_interrupt(struct pt_regs *regs); #endif /* _ASM_X86_UV_UV_BAU_H */
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