| /* |
| * 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> |
| #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 64 |
| #define MAX_CPUS_PER_SOCKET 32 |
| #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 UV1_NET_ENDPOINT_INTD 0x38 |
| #define UV2_NET_ENDPOINT_INTD 0x28 |
| #define UV_NET_ENDPOINT_INTD (is_uv1_hub() ? \ |
| UV1_NET_ENDPOINT_INTD : UV2_NET_ENDPOINT_INTD) |
| #define UV_DESC_PSHIFT 49 |
| #define UV_PAYLOADQ_PNODE_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 uv_mmask ((1UL << uv_hub_info->m_val) - 1) |
| #define uv_physnodeaddr(x) ((__pa((unsigned long)(x)) & uv_mmask)) |
| #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 655us, similar to UV1: 65 units of 10us |
| */ |
| #define UV1_INTD_SOFT_ACK_TIMEOUT_PERIOD (9UL) |
| #define UV2_INTD_SOFT_ACK_TIMEOUT_PERIOD (65*10UL) |
| |
| #define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD (is_uv1_hub() ? \ |
| UV1_INTD_SOFT_ACK_TIMEOUT_PERIOD : \ |
| UV2_INTD_SOFT_ACK_TIMEOUT_PERIOD) |
| |
| #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 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 5 will not occur |
| */ |
| #define UV2H_DESC_IDLE 0 |
| #define UV2H_DESC_DEST_TIMEOUT 2 |
| #define UV2H_DESC_DEST_STRONG_NACK 3 |
| #define UV2H_DESC_BUSY 4 |
| #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 |
| |
| #define UV_LB_SUBNODEID 0x10 |
| |
| /* these two are the same for UV1 and UV2: */ |
| #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_LEG_SHFT UV2H_LB_BAU_MISC_CONTROL_USE_LEGACY_DESCRIPTOR_FORMATS_SHFT |
| #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 CONGESTED_PERIOD 30 /* time for the bau to be |
| disabled, in seconds */ |
| /* see msg_type: */ |
| #define MSG_NOOP 0 |
| #define MSG_REGULAR 1 |
| #define MSG_RETRY 2 |
| |
| /* |
| * 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 bau_targ_hubmask { |
| 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 ] |
| */ |
| |
| /* |
| * 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 { |
| unsigned int dest_subnodeid:6; /* must be 0x10, for the LB */ |
| /* bits 5:0 */ |
| unsigned int base_dest_nasid:15; /* nasid of the first bit */ |
| /* bits 20:6 */ /* in uvhub map */ |
| unsigned int command:8; /* message type */ |
| /* bits 28:21 */ |
| /* 0x38: SN3net EndPoint Message */ |
| unsigned int rsvd_1:3; /* must be zero */ |
| /* bits 31:29 */ |
| /* int will align on 32 bits */ |
| unsigned int rsvd_2:9; /* must be zero */ |
| /* bits 40:32 */ |
| /* Suppl_A is 56-41 */ |
| unsigned int sequence:16; /* message sequence number */ |
| /* bits 56:41 */ /* becomes bytes 16-17 of msg */ |
| /* Address field (96:57) is |
| never used as an address |
| (these are address bits |
| 42:3) */ |
| |
| unsigned int rsvd_3:1; /* must be zero */ |
| /* bit 57 */ |
| /* address bits 27:4 are payload */ |
| /* these next 24 (58-81) bits become bytes 12-14 of msg */ |
| /* bits 65:58 land in byte 12 */ |
| unsigned int replied_to:1; /* sent as 0 by the source to |
| byte 12 */ |
| /* bit 58 */ |
| unsigned int msg_type:3; /* software type of the |
| message */ |
| /* bits 61:59 */ |
| unsigned int canceled:1; /* message canceled, resource |
| is to be freed*/ |
| /* bit 62 */ |
| unsigned int payload_1a:1; /* not currently used */ |
| /* bit 63 */ |
| unsigned int payload_1b:2; /* not currently used */ |
| /* bits 65:64 */ |
| |
| /* bits 73:66 land in byte 13 */ |
| unsigned int payload_1ca:6; /* not currently used */ |
| /* bits 71:66 */ |
| unsigned int payload_1c:2; /* not currently used */ |
| /* bits 73:72 */ |
| |
| /* bits 81:74 land in byte 14 */ |
| unsigned int payload_1d:6; /* not currently used */ |
| /* bits 79:74 */ |
| unsigned int payload_1e:2; /* not currently used */ |
| /* bits 81:80 */ |
| |
| unsigned int rsvd_4:7; /* must be zero */ |
| /* bits 88:82 */ |
| unsigned int swack_flag:1; /* software acknowledge flag */ |
| /* bit 89 */ |
| /* INTD trasactions at |
| destination are to wait for |
| software acknowledge */ |
| unsigned int rsvd_5:6; /* must be zero */ |
| /* bits 95:90 */ |
| unsigned int rsvd_6:5; /* must be zero */ |
| /* bits 100:96 */ |
| unsigned int int_both:1; /* if 1, interrupt both sockets |
| on the uvhub */ |
| /* bit 101*/ |
| unsigned int fairness:3; /* usually zero */ |
| /* bits 104:102 */ |
| unsigned int multilevel:1; /* multi-level multicast |
| format */ |
| /* bit 105 */ |
| /* 0 for TLB: endpoint multi-unicast messages */ |
| unsigned int chaining:1; /* next descriptor is part of |
| this activation*/ |
| /* bit 106 */ |
| unsigned 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_targ_hubmask 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 |
| * 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; |
| int swack_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_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 */ |
| /* 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]; |
| }; |
| |
| /* |
| * one per-cpu; to locate the software tables |
| */ |
| 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; |
| 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; |
| int baudisabled; |
| int set_bau_off; |
| short cpu; |
| short osnode; |
| short uvhub_cpu; |
| short uvhub; |
| short cpus_in_socket; |
| short cpus_in_uvhub; |
| short partition_base_pnode; |
| unsigned short message_number; |
| unsigned short uvhub_quiesce; |
| short socket_acknowledge_count[DEST_Q_SIZE]; |
| cycles_t send_message; |
| spinlock_t uvhub_lock; |
| spinlock_t queue_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; |
| int cong_period; |
| cycles_t period_time; |
| long period_requests; |
| struct hub_and_pnode *thp; |
| }; |
| |
| static unsigned long read_mmr_uv2_status(void) |
| { |
| return read_lmmr(UV2H_LB_BAU_SB_ACTIVATION_STATUS_2); |
| } |
| |
| static void write_mmr_data_broadcast(int pnode, unsigned long mmr_image) |
| { |
| write_gmmr(pnode, UVH_BAU_DATA_BROADCAST, mmr_image); |
| } |
| |
| static void write_mmr_descriptor_base(int pnode, unsigned long mmr_image) |
| { |
| write_gmmr(pnode, UVH_LB_BAU_SB_DESCRIPTOR_BASE, mmr_image); |
| } |
| |
| static void write_mmr_activation(unsigned long index) |
| { |
| write_lmmr(UVH_LB_BAU_SB_ACTIVATION_CONTROL, index); |
| } |
| |
| static void write_gmmr_activation(int pnode, unsigned long mmr_image) |
| { |
| write_gmmr(pnode, UVH_LB_BAU_SB_ACTIVATION_CONTROL, mmr_image); |
| } |
| |
| static void write_mmr_payload_first(int pnode, unsigned long mmr_image) |
| { |
| write_gmmr(pnode, UVH_LB_BAU_INTD_PAYLOAD_QUEUE_FIRST, mmr_image); |
| } |
| |
| static void write_mmr_payload_tail(int pnode, unsigned long mmr_image) |
| { |
| write_gmmr(pnode, UVH_LB_BAU_INTD_PAYLOAD_QUEUE_TAIL, mmr_image); |
| } |
| |
| static void write_mmr_payload_last(int pnode, unsigned long mmr_image) |
| { |
| write_gmmr(pnode, UVH_LB_BAU_INTD_PAYLOAD_QUEUE_LAST, mmr_image); |
| } |
| |
| static void write_mmr_misc_control(int pnode, unsigned long mmr_image) |
| { |
| write_gmmr(pnode, UVH_LB_BAU_MISC_CONTROL, mmr_image); |
| } |
| |
| static unsigned long read_mmr_misc_control(int pnode) |
| { |
| return read_gmmr(pnode, UVH_LB_BAU_MISC_CONTROL); |
| } |
| |
| static void write_mmr_sw_ack(unsigned long mr) |
| { |
| uv_write_local_mmr(UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS, mr); |
| } |
| |
| static unsigned long read_mmr_sw_ack(void) |
| { |
| return read_lmmr(UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE); |
| } |
| |
| static unsigned long read_gmmr_sw_ack(int pnode) |
| { |
| return read_gmmr(pnode, UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE); |
| } |
| |
| static 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 bau_targ_hubmask *dstp) |
| { |
| return constant_test_bit(uvhub, &dstp->bits[0]); |
| } |
| static inline void bau_uvhub_set(int pnode, struct bau_targ_hubmask *dstp) |
| { |
| __set_bit(pnode, &dstp->bits[0]); |
| } |
| static inline void bau_uvhubs_clear(struct bau_targ_hubmask *dstp, |
| int nbits) |
| { |
| bitmap_zero(&dstp->bits[0], nbits); |
| } |
| static inline int bau_uvhub_weight(struct bau_targ_hubmask *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); |
| } |
| |
| extern void uv_bau_message_intr1(void); |
| extern void uv_bau_timeout_intr1(void); |
| |
| 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; |
| } |
| |
| #endif /* _ASM_X86_UV_UV_BAU_H */ |