diff options
Diffstat (limited to 'drivers/misc/sgi-xp/xpc.h')
-rw-r--r-- | drivers/misc/sgi-xp/xpc.h | 271 |
1 files changed, 136 insertions, 135 deletions
diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h index 275b78896a73..b94d5f767703 100644 --- a/drivers/misc/sgi-xp/xpc.h +++ b/drivers/misc/sgi-xp/xpc.h @@ -90,16 +90,21 @@ struct xpc_rsvd_page { short max_npartitions; /* value of XPC_MAX_PARTITIONS */ u8 version; u8 pad1[3]; /* align to next u64 in 1st 64-byte cacheline */ + unsigned long ts_jiffies; /* timestamp when rsvd pg was setup by XPC */ union { - unsigned long vars_pa; /* phys address of struct xpc_vars */ - unsigned long activate_mq_gpa; /* gru phy addr of activate_mq */ + struct { + unsigned long vars_pa; /* phys addr */ + } sn2; + struct { + unsigned long heartbeat_gpa; /* phys addr */ + unsigned long activate_gru_mq_desc_gpa; /* phys addr */ + } uv; } sn; - unsigned long ts_jiffies; /* timestamp when rsvd pg was setup by XPC */ - u64 pad2[10]; /* align to last u64 in 2nd 64-byte cacheline */ + u64 pad2[9]; /* align to last u64 in 2nd 64-byte cacheline */ u64 SAL_nasids_size; /* SAL: size of each nasid mask in bytes */ }; -#define XPC_RP_VERSION _XPC_VERSION(2, 0) /* version 2.0 of the reserved page */ +#define XPC_RP_VERSION _XPC_VERSION(3, 0) /* version 3.0 of the reserved page */ /* * Define the structures by which XPC variables can be exported to other @@ -180,6 +185,17 @@ struct xpc_vars_part_sn2 { (XPC_RP_MACH_NASIDS(_rp) + \ xpc_nasid_mask_nlongs)) + +/* + * The following structure describes the partition's heartbeat info which + * will be periodically read by other partitions to determine whether this + * XPC is still 'alive'. + */ +struct xpc_heartbeat_uv { + unsigned long value; + unsigned long offline; /* if 0, heartbeat should be changing */ +}; + /* * Info pertinent to a GRU message queue using a watch list for irq generation. */ @@ -189,14 +205,17 @@ struct xpc_gru_mq_uv { int irq; /* irq raised when message is received in mq */ int mmr_blade; /* blade where watchlist was allocated from */ unsigned long mmr_offset; /* offset of irq mmr located on mmr_blade */ + unsigned long mmr_value; /* value of irq mmr located on mmr_blade */ int watchlist_num; /* number of watchlist allocatd by BIOS */ + void *gru_mq_desc; /* opaque structure used by the GRU driver */ }; /* * The activate_mq is used to send/receive GRU messages that affect XPC's - * heartbeat, partition active state, and channel state. This is UV only. + * partition active state and channel state. This is uv only. */ struct xpc_activate_mq_msghdr_uv { + unsigned int gru_msg_hdr; /* FOR GRU INTERNAL USE ONLY */ short partid; /* sender's partid */ u8 act_state; /* sender's act_state at time msg sent */ u8 type; /* message's type */ @@ -205,34 +224,28 @@ struct xpc_activate_mq_msghdr_uv { /* activate_mq defined message types */ #define XPC_ACTIVATE_MQ_MSG_SYNC_ACT_STATE_UV 0 -#define XPC_ACTIVATE_MQ_MSG_INC_HEARTBEAT_UV 1 -#define XPC_ACTIVATE_MQ_MSG_OFFLINE_HEARTBEAT_UV 2 -#define XPC_ACTIVATE_MQ_MSG_ONLINE_HEARTBEAT_UV 3 -#define XPC_ACTIVATE_MQ_MSG_ACTIVATE_REQ_UV 4 -#define XPC_ACTIVATE_MQ_MSG_DEACTIVATE_REQ_UV 5 +#define XPC_ACTIVATE_MQ_MSG_ACTIVATE_REQ_UV 1 +#define XPC_ACTIVATE_MQ_MSG_DEACTIVATE_REQ_UV 2 -#define XPC_ACTIVATE_MQ_MSG_CHCTL_CLOSEREQUEST_UV 6 -#define XPC_ACTIVATE_MQ_MSG_CHCTL_CLOSEREPLY_UV 7 -#define XPC_ACTIVATE_MQ_MSG_CHCTL_OPENREQUEST_UV 8 -#define XPC_ACTIVATE_MQ_MSG_CHCTL_OPENREPLY_UV 9 +#define XPC_ACTIVATE_MQ_MSG_CHCTL_CLOSEREQUEST_UV 3 +#define XPC_ACTIVATE_MQ_MSG_CHCTL_CLOSEREPLY_UV 4 +#define XPC_ACTIVATE_MQ_MSG_CHCTL_OPENREQUEST_UV 5 +#define XPC_ACTIVATE_MQ_MSG_CHCTL_OPENREPLY_UV 6 +#define XPC_ACTIVATE_MQ_MSG_CHCTL_OPENCOMPLETE_UV 7 -#define XPC_ACTIVATE_MQ_MSG_MARK_ENGAGED_UV 10 -#define XPC_ACTIVATE_MQ_MSG_MARK_DISENGAGED_UV 11 +#define XPC_ACTIVATE_MQ_MSG_MARK_ENGAGED_UV 8 +#define XPC_ACTIVATE_MQ_MSG_MARK_DISENGAGED_UV 9 struct xpc_activate_mq_msg_uv { struct xpc_activate_mq_msghdr_uv hdr; }; -struct xpc_activate_mq_msg_heartbeat_req_uv { - struct xpc_activate_mq_msghdr_uv hdr; - u64 heartbeat; -}; - struct xpc_activate_mq_msg_activate_req_uv { struct xpc_activate_mq_msghdr_uv hdr; unsigned long rp_gpa; - unsigned long activate_mq_gpa; + unsigned long heartbeat_gpa; + unsigned long activate_gru_mq_desc_gpa; }; struct xpc_activate_mq_msg_deactivate_req_uv { @@ -263,7 +276,12 @@ struct xpc_activate_mq_msg_chctl_openreply_uv { short ch_number; short remote_nentries; /* ??? Is this needed? What is? */ short local_nentries; /* ??? Is this needed? What is? */ - unsigned long local_notify_mq_gpa; + unsigned long notify_gru_mq_desc_gpa; +}; + +struct xpc_activate_mq_msg_chctl_opencomplete_uv { + struct xpc_activate_mq_msghdr_uv hdr; + short ch_number; }; /* @@ -510,8 +528,8 @@ struct xpc_channel_sn2 { }; struct xpc_channel_uv { - unsigned long remote_notify_mq_gpa; /* gru phys address of remote */ - /* partition's notify mq */ + void *cached_notify_gru_mq_desc; /* remote partition's notify mq's */ + /* gru mq descriptor */ struct xpc_send_msg_slot_uv *send_msg_slots; void *recv_msg_slots; /* each slot will hold a xpc_notify_mq_msg_uv */ @@ -571,30 +589,32 @@ struct xpc_channel { #define XPC_C_WASCONNECTED 0x00000001 /* channel was connected */ -#define XPC_C_ROPENREPLY 0x00000002 /* remote open channel reply */ -#define XPC_C_OPENREPLY 0x00000004 /* local open channel reply */ -#define XPC_C_ROPENREQUEST 0x00000008 /* remote open channel request */ -#define XPC_C_OPENREQUEST 0x00000010 /* local open channel request */ +#define XPC_C_ROPENCOMPLETE 0x00000002 /* remote open channel complete */ +#define XPC_C_OPENCOMPLETE 0x00000004 /* local open channel complete */ +#define XPC_C_ROPENREPLY 0x00000008 /* remote open channel reply */ +#define XPC_C_OPENREPLY 0x00000010 /* local open channel reply */ +#define XPC_C_ROPENREQUEST 0x00000020 /* remote open channel request */ +#define XPC_C_OPENREQUEST 0x00000040 /* local open channel request */ -#define XPC_C_SETUP 0x00000020 /* channel's msgqueues are alloc'd */ -#define XPC_C_CONNECTEDCALLOUT 0x00000040 /* connected callout initiated */ +#define XPC_C_SETUP 0x00000080 /* channel's msgqueues are alloc'd */ +#define XPC_C_CONNECTEDCALLOUT 0x00000100 /* connected callout initiated */ #define XPC_C_CONNECTEDCALLOUT_MADE \ - 0x00000080 /* connected callout completed */ -#define XPC_C_CONNECTED 0x00000100 /* local channel is connected */ -#define XPC_C_CONNECTING 0x00000200 /* channel is being connected */ + 0x00000200 /* connected callout completed */ +#define XPC_C_CONNECTED 0x00000400 /* local channel is connected */ +#define XPC_C_CONNECTING 0x00000800 /* channel is being connected */ -#define XPC_C_RCLOSEREPLY 0x00000400 /* remote close channel reply */ -#define XPC_C_CLOSEREPLY 0x00000800 /* local close channel reply */ -#define XPC_C_RCLOSEREQUEST 0x00001000 /* remote close channel request */ -#define XPC_C_CLOSEREQUEST 0x00002000 /* local close channel request */ +#define XPC_C_RCLOSEREPLY 0x00001000 /* remote close channel reply */ +#define XPC_C_CLOSEREPLY 0x00002000 /* local close channel reply */ +#define XPC_C_RCLOSEREQUEST 0x00004000 /* remote close channel request */ +#define XPC_C_CLOSEREQUEST 0x00008000 /* local close channel request */ -#define XPC_C_DISCONNECTED 0x00004000 /* channel is disconnected */ -#define XPC_C_DISCONNECTING 0x00008000 /* channel is being disconnected */ +#define XPC_C_DISCONNECTED 0x00010000 /* channel is disconnected */ +#define XPC_C_DISCONNECTING 0x00020000 /* channel is being disconnected */ #define XPC_C_DISCONNECTINGCALLOUT \ - 0x00010000 /* disconnecting callout initiated */ + 0x00040000 /* disconnecting callout initiated */ #define XPC_C_DISCONNECTINGCALLOUT_MADE \ - 0x00020000 /* disconnecting callout completed */ -#define XPC_C_WDISCONNECT 0x00040000 /* waiting for channel disconnect */ + 0x00080000 /* disconnecting callout completed */ +#define XPC_C_WDISCONNECT 0x00100000 /* waiting for channel disconnect */ /* * The channel control flags (chctl) union consists of a 64-bit variable which @@ -613,11 +633,13 @@ union xpc_channel_ctl_flags { #define XPC_CHCTL_CLOSEREPLY 0x02 #define XPC_CHCTL_OPENREQUEST 0x04 #define XPC_CHCTL_OPENREPLY 0x08 -#define XPC_CHCTL_MSGREQUEST 0x10 +#define XPC_CHCTL_OPENCOMPLETE 0x10 +#define XPC_CHCTL_MSGREQUEST 0x20 #define XPC_OPENCLOSE_CHCTL_FLAGS \ (XPC_CHCTL_CLOSEREQUEST | XPC_CHCTL_CLOSEREPLY | \ - XPC_CHCTL_OPENREQUEST | XPC_CHCTL_OPENREPLY) + XPC_CHCTL_OPENREQUEST | XPC_CHCTL_OPENREPLY | \ + XPC_CHCTL_OPENCOMPLETE) #define XPC_MSG_CHCTL_FLAGS XPC_CHCTL_MSGREQUEST static inline int @@ -682,20 +704,26 @@ struct xpc_partition_sn2 { }; struct xpc_partition_uv { - unsigned long remote_activate_mq_gpa; /* gru phys address of remote */ - /* partition's activate mq */ + unsigned long heartbeat_gpa; /* phys addr of partition's heartbeat */ + struct xpc_heartbeat_uv cached_heartbeat; /* cached copy of */ + /* partition's heartbeat */ + unsigned long activate_gru_mq_desc_gpa; /* phys addr of parititon's */ + /* activate mq's gru mq */ + /* descriptor */ + void *cached_activate_gru_mq_desc; /* cached copy of partition's */ + /* activate mq's gru mq descriptor */ + struct mutex cached_activate_gru_mq_desc_mutex; spinlock_t flags_lock; /* protect updating of flags */ unsigned int flags; /* general flags */ u8 remote_act_state; /* remote partition's act_state */ u8 act_state_req; /* act_state request from remote partition */ enum xp_retval reason; /* reason for deactivate act_state request */ - u64 heartbeat; /* incremented by remote partition */ }; /* struct xpc_partition_uv flags */ -#define XPC_P_HEARTBEAT_OFFLINE_UV 0x00000001 -#define XPC_P_ENGAGED_UV 0x00000002 +#define XPC_P_CACHED_ACTIVATE_GRU_MQ_DESC_UV 0x00000001 +#define XPC_P_ENGAGED_UV 0x00000002 /* struct xpc_partition_uv act_state change requests */ @@ -752,6 +780,62 @@ struct xpc_partition { } ____cacheline_aligned; +struct xpc_arch_operations { + int (*setup_partitions) (void); + void (*teardown_partitions) (void); + void (*process_activate_IRQ_rcvd) (void); + enum xp_retval (*get_partition_rsvd_page_pa) + (void *, u64 *, unsigned long *, size_t *); + int (*setup_rsvd_page) (struct xpc_rsvd_page *); + + void (*allow_hb) (short); + void (*disallow_hb) (short); + void (*disallow_all_hbs) (void); + void (*increment_heartbeat) (void); + void (*offline_heartbeat) (void); + void (*online_heartbeat) (void); + void (*heartbeat_init) (void); + void (*heartbeat_exit) (void); + enum xp_retval (*get_remote_heartbeat) (struct xpc_partition *); + + void (*request_partition_activation) (struct xpc_rsvd_page *, + unsigned long, int); + void (*request_partition_reactivation) (struct xpc_partition *); + void (*request_partition_deactivation) (struct xpc_partition *); + void (*cancel_partition_deactivation_request) (struct xpc_partition *); + enum xp_retval (*setup_ch_structures) (struct xpc_partition *); + void (*teardown_ch_structures) (struct xpc_partition *); + + enum xp_retval (*make_first_contact) (struct xpc_partition *); + + u64 (*get_chctl_all_flags) (struct xpc_partition *); + void (*send_chctl_closerequest) (struct xpc_channel *, unsigned long *); + void (*send_chctl_closereply) (struct xpc_channel *, unsigned long *); + void (*send_chctl_openrequest) (struct xpc_channel *, unsigned long *); + void (*send_chctl_openreply) (struct xpc_channel *, unsigned long *); + void (*send_chctl_opencomplete) (struct xpc_channel *, unsigned long *); + void (*process_msg_chctl_flags) (struct xpc_partition *, int); + + enum xp_retval (*save_remote_msgqueue_pa) (struct xpc_channel *, + unsigned long); + + enum xp_retval (*setup_msg_structures) (struct xpc_channel *); + void (*teardown_msg_structures) (struct xpc_channel *); + + void (*indicate_partition_engaged) (struct xpc_partition *); + void (*indicate_partition_disengaged) (struct xpc_partition *); + void (*assume_partition_disengaged) (short); + int (*partition_engaged) (short); + int (*any_partition_engaged) (void); + + int (*n_of_deliverable_payloads) (struct xpc_channel *); + enum xp_retval (*send_payload) (struct xpc_channel *, u32, void *, + u16, u8, xpc_notify_func, void *); + void *(*get_deliverable_payload) (struct xpc_channel *); + void (*received_payload) (struct xpc_channel *, void *); + void (*notify_senders_of_disconnect) (struct xpc_channel *); +}; + /* struct xpc_partition act_state values (for XPC HB) */ #define XPC_P_AS_INACTIVE 0x00 /* partition is not active */ @@ -792,66 +876,17 @@ extern struct xpc_registration xpc_registrations[]; /* found in xpc_main.c */ extern struct device *xpc_part; extern struct device *xpc_chan; +extern struct xpc_arch_operations xpc_arch_ops; extern int xpc_disengage_timelimit; extern int xpc_disengage_timedout; extern int xpc_activate_IRQ_rcvd; extern spinlock_t xpc_activate_IRQ_rcvd_lock; extern wait_queue_head_t xpc_activate_IRQ_wq; -extern void *xpc_heartbeating_to_mask; extern void *xpc_kzalloc_cacheline_aligned(size_t, gfp_t, void **); extern void xpc_activate_partition(struct xpc_partition *); extern void xpc_activate_kthreads(struct xpc_channel *, int); extern void xpc_create_kthreads(struct xpc_channel *, int, int); extern void xpc_disconnect_wait(int); -extern int (*xpc_setup_partitions_sn) (void); -extern enum xp_retval (*xpc_get_partition_rsvd_page_pa) (void *, u64 *, - unsigned long *, - size_t *); -extern int (*xpc_setup_rsvd_page_sn) (struct xpc_rsvd_page *); -extern void (*xpc_heartbeat_init) (void); -extern void (*xpc_heartbeat_exit) (void); -extern void (*xpc_increment_heartbeat) (void); -extern void (*xpc_offline_heartbeat) (void); -extern void (*xpc_online_heartbeat) (void); -extern enum xp_retval (*xpc_get_remote_heartbeat) (struct xpc_partition *); -extern enum xp_retval (*xpc_make_first_contact) (struct xpc_partition *); -extern u64 (*xpc_get_chctl_all_flags) (struct xpc_partition *); -extern enum xp_retval (*xpc_setup_msg_structures) (struct xpc_channel *); -extern void (*xpc_teardown_msg_structures) (struct xpc_channel *); -extern void (*xpc_notify_senders_of_disconnect) (struct xpc_channel *); -extern void (*xpc_process_msg_chctl_flags) (struct xpc_partition *, int); -extern int (*xpc_n_of_deliverable_payloads) (struct xpc_channel *); -extern void *(*xpc_get_deliverable_payload) (struct xpc_channel *); -extern void (*xpc_request_partition_activation) (struct xpc_rsvd_page *, - unsigned long, int); -extern void (*xpc_request_partition_reactivation) (struct xpc_partition *); -extern void (*xpc_request_partition_deactivation) (struct xpc_partition *); -extern void (*xpc_cancel_partition_deactivation_request) ( - struct xpc_partition *); -extern void (*xpc_process_activate_IRQ_rcvd) (void); -extern enum xp_retval (*xpc_setup_ch_structures_sn) (struct xpc_partition *); -extern void (*xpc_teardown_ch_structures_sn) (struct xpc_partition *); - -extern void (*xpc_indicate_partition_engaged) (struct xpc_partition *); -extern int (*xpc_partition_engaged) (short); -extern int (*xpc_any_partition_engaged) (void); -extern void (*xpc_indicate_partition_disengaged) (struct xpc_partition *); -extern void (*xpc_assume_partition_disengaged) (short); - -extern void (*xpc_send_chctl_closerequest) (struct xpc_channel *, - unsigned long *); -extern void (*xpc_send_chctl_closereply) (struct xpc_channel *, - unsigned long *); -extern void (*xpc_send_chctl_openrequest) (struct xpc_channel *, - unsigned long *); -extern void (*xpc_send_chctl_openreply) (struct xpc_channel *, unsigned long *); - -extern void (*xpc_save_remote_msgqueue_pa) (struct xpc_channel *, - unsigned long); - -extern enum xp_retval (*xpc_send_payload) (struct xpc_channel *, u32, void *, - u16, u8, xpc_notify_func, void *); -extern void (*xpc_received_payload) (struct xpc_channel *, void *); /* found in xpc_sn2.c */ extern int xpc_init_sn2(void); @@ -898,40 +933,6 @@ extern void xpc_disconnect_channel(const int, struct xpc_channel *, extern void xpc_disconnect_callout(struct xpc_channel *, enum xp_retval); extern void xpc_partition_going_down(struct xpc_partition *, enum xp_retval); -static inline int -xpc_hb_allowed(short partid, void *heartbeating_to_mask) -{ - return test_bit(partid, heartbeating_to_mask); -} - -static inline int -xpc_any_hbs_allowed(void) -{ - DBUG_ON(xpc_heartbeating_to_mask == NULL); - return !bitmap_empty(xpc_heartbeating_to_mask, xp_max_npartitions); -} - -static inline void -xpc_allow_hb(short partid) -{ - DBUG_ON(xpc_heartbeating_to_mask == NULL); - set_bit(partid, xpc_heartbeating_to_mask); -} - -static inline void -xpc_disallow_hb(short partid) -{ - DBUG_ON(xpc_heartbeating_to_mask == NULL); - clear_bit(partid, xpc_heartbeating_to_mask); -} - -static inline void -xpc_disallow_all_hbs(void) -{ - DBUG_ON(xpc_heartbeating_to_mask == NULL); - bitmap_zero(xpc_heartbeating_to_mask, xp_max_npartitions); -} - static inline void xpc_wakeup_channel_mgr(struct xpc_partition *part) { |