diff options
Diffstat (limited to 'drivers/misc/sgi-xp')
| -rw-r--r-- | drivers/misc/sgi-xp/xp_main.c | 12 | ||||
| -rw-r--r-- | drivers/misc/sgi-xp/xpc.h | 254 | ||||
| -rw-r--r-- | drivers/misc/sgi-xp/xpc_channel.c | 138 | ||||
| -rw-r--r-- | drivers/misc/sgi-xp/xpc_main.c | 128 | ||||
| -rw-r--r-- | drivers/misc/sgi-xp/xpc_partition.c | 20 | ||||
| -rw-r--r-- | drivers/misc/sgi-xp/xpc_sn2.c | 164 | ||||
| -rw-r--r-- | drivers/misc/sgi-xp/xpc_uv.c | 257 |
7 files changed, 483 insertions, 490 deletions
diff --git a/drivers/misc/sgi-xp/xp_main.c b/drivers/misc/sgi-xp/xp_main.c index 16f8dcab2da..7896849b16d 100644 --- a/drivers/misc/sgi-xp/xp_main.c +++ b/drivers/misc/sgi-xp/xp_main.c @@ -248,19 +248,19 @@ xp_init(void) enum xp_retval ret; int ch_number; + /* initialize the connection registration mutex */ + for (ch_number = 0; ch_number < XPC_MAX_NCHANNELS; ch_number++) + mutex_init(&xpc_registrations[ch_number].mutex); + if (is_shub()) ret = xp_init_sn2(); else if (is_uv()) ret = xp_init_uv(); else - ret = xpUnsupported; + ret = 0; if (ret != xpSuccess) - return -ENODEV; - - /* initialize the connection registration mutex */ - for (ch_number = 0; ch_number < XPC_MAX_NCHANNELS; ch_number++) - mutex_init(&xpc_registrations[ch_number].mutex); + return ret; return 0; } diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h index 114444cfd49..b94d5f76770 100644 --- a/drivers/misc/sgi-xp/xpc.h +++ b/drivers/misc/sgi-xp/xpc.h @@ -90,18 +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_gru_mq_desc_gpa; /* phys addr of */ - /* activate mq's */ - /* gru mq descriptor */ + 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 @@ -182,6 +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. */ @@ -198,7 +212,7 @@ struct xpc_gru_mq_uv { /* * 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 */ @@ -210,33 +224,27 @@ 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 heartbeat_gpa; unsigned long activate_gru_mq_desc_gpa; }; @@ -271,6 +279,11 @@ struct xpc_activate_mq_msg_chctl_openreply_uv { 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; +}; + /* * Functions registered by add_timer() or called by kernel_thread() only * allow for a single 64-bit argument. The following macros can be used to @@ -576,30 +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 @@ -618,11 +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 @@ -687,6 +704,9 @@ struct xpc_partition_sn2 { }; struct xpc_partition_uv { + 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 */ @@ -698,14 +718,12 @@ struct xpc_partition_uv { 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_CACHED_ACTIVATE_GRU_MQ_DESC_UV 0x00000001 #define XPC_P_ENGAGED_UV 0x00000002 -#define XPC_P_CACHED_ACTIVATE_GRU_MQ_DESC_UV 0x00000004 /* struct xpc_partition_uv act_state change requests */ @@ -762,6 +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 */ @@ -802,67 +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 void (*xpc_teardown_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 enum xp_retval (*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); @@ -909,40 +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) { diff --git a/drivers/misc/sgi-xp/xpc_channel.c b/drivers/misc/sgi-xp/xpc_channel.c index 99a2534c38a..652593fc486 100644 --- a/drivers/misc/sgi-xp/xpc_channel.c +++ b/drivers/misc/sgi-xp/xpc_channel.c @@ -3,7 +3,7 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (c) 2004-2009 Silicon Graphics, Inc. All Rights Reserved. */ /* @@ -39,34 +39,38 @@ xpc_process_connect(struct xpc_channel *ch, unsigned long *irq_flags) if (!(ch->flags & XPC_C_SETUP)) { spin_unlock_irqrestore(&ch->lock, *irq_flags); - ret = xpc_setup_msg_structures(ch); + ret = xpc_arch_ops.setup_msg_structures(ch); spin_lock_irqsave(&ch->lock, *irq_flags); if (ret != xpSuccess) XPC_DISCONNECT_CHANNEL(ch, ret, irq_flags); + else + ch->flags |= XPC_C_SETUP; - ch->flags |= XPC_C_SETUP; - - if (ch->flags & (XPC_C_CONNECTED | XPC_C_DISCONNECTING)) + if (ch->flags & XPC_C_DISCONNECTING) return; } if (!(ch->flags & XPC_C_OPENREPLY)) { ch->flags |= XPC_C_OPENREPLY; - xpc_send_chctl_openreply(ch, irq_flags); + xpc_arch_ops.send_chctl_openreply(ch, irq_flags); } if (!(ch->flags & XPC_C_ROPENREPLY)) return; - ch->flags = (XPC_C_CONNECTED | XPC_C_SETUP); /* clear all else */ + if (!(ch->flags & XPC_C_OPENCOMPLETE)) { + ch->flags |= (XPC_C_OPENCOMPLETE | XPC_C_CONNECTED); + xpc_arch_ops.send_chctl_opencomplete(ch, irq_flags); + } + + if (!(ch->flags & XPC_C_ROPENCOMPLETE)) + return; dev_info(xpc_chan, "channel %d to partition %d connected\n", ch->number, ch->partid); - spin_unlock_irqrestore(&ch->lock, *irq_flags); - xpc_create_kthreads(ch, 1, 0); - spin_lock_irqsave(&ch->lock, *irq_flags); + ch->flags = (XPC_C_CONNECTED | XPC_C_SETUP); /* clear all else */ } /* @@ -96,7 +100,7 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags) if (part->act_state == XPC_P_AS_DEACTIVATING) { /* can't proceed until the other side disengages from us */ - if (xpc_partition_engaged(ch->partid)) + if (xpc_arch_ops.partition_engaged(ch->partid)) return; } else { @@ -108,7 +112,7 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags) if (!(ch->flags & XPC_C_CLOSEREPLY)) { ch->flags |= XPC_C_CLOSEREPLY; - xpc_send_chctl_closereply(ch, irq_flags); + xpc_arch_ops.send_chctl_closereply(ch, irq_flags); } if (!(ch->flags & XPC_C_RCLOSEREPLY)) @@ -118,7 +122,7 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags) /* wake those waiting for notify completion */ if (atomic_read(&ch->n_to_notify) > 0) { /* we do callout while holding ch->lock, callout can't block */ - xpc_notify_senders_of_disconnect(ch); + xpc_arch_ops.notify_senders_of_disconnect(ch); } /* both sides are disconnected now */ @@ -132,7 +136,7 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags) DBUG_ON(atomic_read(&ch->n_to_notify) != 0); /* it's now safe to free the channel's message queues */ - xpc_teardown_msg_structures(ch); + xpc_arch_ops.teardown_msg_structures(ch); ch->func = NULL; ch->key = NULL; @@ -144,8 +148,9 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags) /* * Mark the channel disconnected and clear all other flags, including - * XPC_C_SETUP (because of call to xpc_teardown_msg_structures()) but - * not including XPC_C_WDISCONNECT (if it was set). + * XPC_C_SETUP (because of call to + * xpc_arch_ops.teardown_msg_structures()) but not including + * XPC_C_WDISCONNECT (if it was set). */ ch->flags = (XPC_C_DISCONNECTED | (ch->flags & XPC_C_WDISCONNECT)); @@ -184,6 +189,7 @@ xpc_process_openclose_chctl_flags(struct xpc_partition *part, int ch_number, struct xpc_channel *ch = &part->channels[ch_number]; enum xp_retval reason; enum xp_retval ret; + int create_kthread = 0; spin_lock_irqsave(&ch->lock, irq_flags); @@ -196,8 +202,7 @@ again: * has had a chance to see that the channel is disconnected. */ ch->delayed_chctl_flags |= chctl_flags; - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } if (chctl_flags & XPC_CHCTL_CLOSEREQUEST) { @@ -239,8 +244,7 @@ again: XPC_CHCTL_CLOSEREQUEST; spin_unlock(&part->chctl_lock); } - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } XPC_SET_REASON(ch, 0, 0); @@ -250,7 +254,8 @@ again: ch->flags |= (XPC_C_CONNECTING | XPC_C_ROPENREQUEST); } - chctl_flags &= ~(XPC_CHCTL_OPENREQUEST | XPC_CHCTL_OPENREPLY); + chctl_flags &= ~(XPC_CHCTL_OPENREQUEST | XPC_CHCTL_OPENREPLY | + XPC_CHCTL_OPENCOMPLETE); /* * The meaningful CLOSEREQUEST connection state fields are: @@ -269,8 +274,7 @@ again: XPC_DISCONNECT_CHANNEL(ch, reason, &irq_flags); DBUG_ON(chctl_flags & XPC_CHCTL_CLOSEREPLY); - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } xpc_process_disconnect(ch, &irq_flags); @@ -283,8 +287,7 @@ again: if (ch->flags & XPC_C_DISCONNECTED) { DBUG_ON(part->act_state != XPC_P_AS_DEACTIVATING); - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } DBUG_ON(!(ch->flags & XPC_C_CLOSEREQUEST)); @@ -299,8 +302,7 @@ again: XPC_CHCTL_CLOSEREPLY; spin_unlock(&part->chctl_lock); } - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } ch->flags |= XPC_C_RCLOSEREPLY; @@ -320,14 +322,12 @@ again: if (part->act_state == XPC_P_AS_DEACTIVATING || (ch->flags & XPC_C_ROPENREQUEST)) { - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } if (ch->flags & (XPC_C_DISCONNECTING | XPC_C_WDISCONNECT)) { ch->delayed_chctl_flags |= XPC_CHCTL_OPENREQUEST; - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } DBUG_ON(!(ch->flags & (XPC_C_DISCONNECTED | XPC_C_OPENREQUEST))); @@ -341,8 +341,7 @@ again: */ if (args->entry_size == 0 || args->local_nentries == 0) { /* assume OPENREQUEST was delayed by mistake */ - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } ch->flags |= (XPC_C_ROPENREQUEST | XPC_C_CONNECTING); @@ -352,8 +351,7 @@ again: if (args->entry_size != ch->entry_size) { XPC_DISCONNECT_CHANNEL(ch, xpUnequalMsgSizes, &irq_flags); - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } } else { ch->entry_size = args->entry_size; @@ -375,15 +373,13 @@ again: args->local_msgqueue_pa, args->local_nentries, args->remote_nentries, ch->partid, ch->number); - if (ch->flags & (XPC_C_DISCONNECTING | XPC_C_DISCONNECTED)) { - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; - } + if (ch->flags & (XPC_C_DISCONNECTING | XPC_C_DISCONNECTED)) + goto out; + if (!(ch->flags & XPC_C_OPENREQUEST)) { XPC_DISCONNECT_CHANNEL(ch, xpOpenCloseError, &irq_flags); - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } DBUG_ON(!(ch->flags & XPC_C_ROPENREQUEST)); @@ -400,11 +396,11 @@ again: DBUG_ON(args->local_nentries == 0); DBUG_ON(args->remote_nentries == 0); - ret = xpc_save_remote_msgqueue_pa(ch, args->local_msgqueue_pa); + ret = xpc_arch_ops.save_remote_msgqueue_pa(ch, + args->local_msgqueue_pa); if (ret != xpSuccess) { XPC_DISCONNECT_CHANNEL(ch, ret, &irq_flags); - spin_unlock_irqrestore(&ch->lock, irq_flags); - return; + goto out; } ch->flags |= XPC_C_ROPENREPLY; @@ -430,7 +426,36 @@ again: xpc_process_connect(ch, &irq_flags); } + if (chctl_flags & XPC_CHCTL_OPENCOMPLETE) { + + dev_dbg(xpc_chan, "XPC_CHCTL_OPENCOMPLETE received from " + "partid=%d, channel=%d\n", ch->partid, ch->number); + + if (ch->flags & (XPC_C_DISCONNECTING | XPC_C_DISCONNECTED)) + goto out; + + if (!(ch->flags & XPC_C_OPENREQUEST) || + !(ch->flags & XPC_C_OPENREPLY)) { + XPC_DISCONNECT_CHANNEL(ch, xpOpenCloseError, + &irq_flags); + goto out; + } + + DBUG_ON(!(ch->flags & XPC_C_ROPENREQUEST)); + DBUG_ON(!(ch->flags & XPC_C_ROPENREPLY)); + DBUG_ON(!(ch->flags & XPC_C_CONNECTED)); + + ch->flags |= XPC_C_ROPENCOMPLETE; + + xpc_process_connect(ch, &irq_flags); + create_kthread = 1; + } + +out: spin_unlock_irqrestore(&ch->lock, irq_flags); + + if (create_kthread) + xpc_create_kthreads(ch, 1, 0); } /* @@ -508,7 +533,7 @@ xpc_connect_channel(struct xpc_channel *ch) /* initiate the connection */ ch->flags |= (XPC_C_OPENREQUEST | XPC_C_CONNECTING); - xpc_send_chctl_openrequest(ch, &irq_flags); + xpc_arch_ops.send_chctl_openrequest(ch, &irq_flags); xpc_process_connect(ch, &irq_flags); @@ -526,7 +551,7 @@ xpc_process_sent_chctl_flags(struct xpc_partition *part) int ch_number; u32 ch_flags; - chctl.all_flags = xpc_get_chctl_all_flags(part); + chctl.all_flags = xpc_arch_ops.get_chctl_all_flags(part); /* * Initiate channel connections for registered channels. @@ -564,10 +589,6 @@ xpc_process_sent_chctl_flags(struct xpc_partition *part) if (!(ch_flags & XPC_C_OPENREQUEST)) { DBUG_ON(ch_flags & XPC_C_SETUP); (void)xpc_connect_channel(ch); - } else { - spin_lock_irqsave(&ch->lock, irq_flags); - xpc_process_connect(ch, &irq_flags); - spin_unlock_irqrestore(&ch->lock, irq_flags); } continue; } @@ -579,7 +600,7 @@ xpc_process_sent_chctl_flags(struct xpc_partition *part) */ if (chctl.flags[ch_number] & XPC_MSG_CHCTL_FLAGS) - xpc_process_msg_chctl_flags(part, ch_number); + xpc_arch_ops.process_msg_chctl_flags(part, ch_number); } } @@ -755,7 +776,7 @@ xpc_disconnect_channel(const int line, struct xpc_channel *ch, XPC_C_ROPENREQUEST | XPC_C_ROPENREPLY | XPC_C_CONNECTING | XPC_C_CONNECTED); - xpc_send_chctl_closerequest(ch, irq_flags); + xpc_arch_ops.send_chctl_closerequest(ch, irq_flags); if (channel_was_connected) ch->flags |= XPC_C_WASCONNECTED; @@ -862,8 +883,8 @@ xpc_initiate_send(short partid, int ch_number, u32 flags, void *payload, DBUG_ON(payload == NULL); if (xpc_part_ref(part)) { - ret = xpc_send_payload(&part->channels[ch_number], flags, - payload, payload_size, 0, NULL, NULL); + ret = xpc_arch_ops.send_payload(&part->channels[ch_number], + flags, payload, payload_size, 0, NULL, NULL); xpc_part_deref(part); } @@ -914,9 +935,8 @@ xpc_initiate_send_notify(short partid, int ch_number, u32 flags, void *payload, DBUG_ON(func == NULL); if (xpc_part_ref(part)) { - ret = xpc_send_payload(&part->channels[ch_number], flags, - payload, payload_size, XPC_N_CALL, func, - key); + ret = xpc_arch_ops.send_payload(&part->channels[ch_number], + flags, payload, payload_size, XPC_N_CALL, func, key); xpc_part_deref(part); } return ret; @@ -930,7 +950,7 @@ xpc_deliver_payload(struct xpc_channel *ch) { void *payload; - payload = xpc_get_deliverable_payload(ch); + payload = xpc_arch_ops.get_deliverable_payload(ch); if (payload != NULL) { /* @@ -984,7 +1004,7 @@ xpc_initiate_received(short partid, int ch_number, void *payload) DBUG_ON(ch_number < 0 || ch_number >= part->nchannels); ch = &part->channels[ch_number]; - xpc_received_payload(ch, payload); + xpc_arch_ops.received_payload(ch, payload); /* the call to xpc_msgqueue_ref() was done by xpc_deliver_payload() */ xpc_msgqueue_deref(ch); diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c index 1ab9fda87fa..fd3688a3e23 100644 --- a/drivers/misc/sgi-xp/xpc_main.c +++ b/drivers/misc/sgi-xp/xpc_main.c @@ -3,7 +3,7 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (c) 2004-2009 Silicon Graphics, Inc. All Rights Reserved. */ /* @@ -150,7 +150,6 @@ DECLARE_WAIT_QUEUE_HEAD(xpc_activate_IRQ_wq); static unsigned long xpc_hb_check_timeout; static struct timer_list xpc_hb_timer; -void *xpc_heartbeating_to_mask; /* notification that the xpc_hb_checker thread has exited */ static DECLARE_COMPLETION(xpc_hb_checker_exited); @@ -170,62 +169,7 @@ static struct notifier_block xpc_die_notifier = { .notifier_call = xpc_system_die, }; -int (*xpc_setup_partitions_sn) (void); -void (*xpc_teardown_partitions_sn) (void); -enum xp_retval (*xpc_get_partition_rsvd_page_pa) (void *buf, u64 *cookie, - unsigned long *rp_pa, - size_t *len); -int (*xpc_setup_rsvd_page_sn) (struct xpc_rsvd_page *rp); -void (*xpc_heartbeat_init) (void); -void (*xpc_heartbeat_exit) (void); -void (*xpc_increment_heartbeat) (void); -void (*xpc_offline_heartbeat) (void); -void (*xpc_online_heartbeat) (void); -enum xp_retval (*xpc_get_remote_heartbeat) (struct xpc_partition *part); - -enum xp_retval (*xpc_make_first_contact) (struct xpc_partition *part); -void (*xpc_notify_senders_of_disconnect) (struct xpc_channel *ch); -u64 (*xpc_get_chctl_all_flags) (struct xpc_partition *part); -enum xp_retval (*xpc_setup_msg_structures) (struct xpc_channel *ch); -void (*xpc_teardown_msg_structures) (struct xpc_channel *ch); -void (*xpc_process_msg_chctl_flags) (struct xpc_partition *part, int ch_number); -int (*xpc_n_of_deliverable_payloads) (struct xpc_channel *ch); -void *(*xpc_get_deliverable_payload) (struct xpc_channel *ch); - -void (*xpc_request_partition_activation) (struct xpc_rsvd_page *remote_rp, - unsigned long remote_rp_pa, - int nasid); -void (*xpc_request_partition_reactivation) (struct xpc_partition *part); -void (*xpc_request_partition_deactivation) (struct xpc_partition *part); -void (*xpc_cancel_partition_deactivation_request) (struct xpc_partition *part); - -void (*xpc_process_activate_IRQ_rcvd) (void); -enum xp_retval (*xpc_setup_ch_structures_sn) (struct xpc_partition *part); -void (*xpc_teardown_ch_structures_sn) (struct xpc_partition *part); - -void (*xpc_indicate_partition_engaged) (struct xpc_partition *part); -int (*xpc_partition_engaged) (short partid); -int (*xpc_any_partition_engaged) (void); -void (*xpc_indicate_partition_disengaged) (struct xpc_partition *part); -void (*xpc_assume_partition_disengaged) (short partid); - -void (*xpc_send_chctl_closerequest) (struct xpc_channel *ch, - unsigned long *irq_flags); -void (*xpc_send_chctl_closereply) (struct xpc_channel *ch, - unsigned long *irq_flags); -void (*xpc_send_chctl_openrequest) (struct xpc_channel *ch, - unsigned long *irq_flags); -void (*xpc_send_chctl_openreply) (struct xpc_channel *ch, - unsigned long *irq_flags); - -enum xp_retval (*xpc_save_remote_msgqueue_pa) (struct xpc_channel *ch, - unsigned long msgqueue_pa); - -enum xp_retval (*xpc_send_payload) (struct xpc_channel *ch, u32 flags, - void *payload, u16 payload_size, - u8 notify_type, xpc_notify_func func, - void *key); -void (*xpc_received_payload) (struct xpc_channel *ch, void *payload); +struct xpc_arch_operations xpc_arch_ops; /* * Timer function to enforce the timelimit on the partition disengage. @@ -240,7 +184,7 @@ xpc_timeout_partition_disengage(unsigned long data) (void)xpc_partition_disengaged(part); DBUG_ON(part->disengage_timeout != 0); - DBUG_ON(xpc_partition_engaged(XPC_PARTID(part))); + DBUG_ON(xpc_arch_ops.partition_engaged(XPC_PARTID(part))); } /* @@ -251,7 +195,7 @@ xpc_timeout_partition_disengage(unsigned long data) static void xpc_hb_beater(unsigned long dummy) { - xpc_increment_heartbeat(); + xpc_arch_ops.increment_heartbeat(); if (time_is_before_eq_jiffies(xpc_hb_check_timeout)) wake_up_interruptible(&xpc_activate_IRQ_wq); @@ -263,7 +207,7 @@ xpc_hb_beater(unsigned long dummy) static void xpc_start_hb_beater(void) { - xpc_heartbeat_init(); + xpc_arch_ops.heartbeat_init(); init_timer(&xpc_hb_timer); xpc_hb_timer.function = xpc_hb_beater; xpc_hb_beater(0); @@ -273,7 +217,7 @@ static void xpc_stop_hb_beater(void) { del_timer_sync(&xpc_hb_timer); - xpc_heartbeat_exit(); + xpc_arch_ops.heartbeat_exit(); } /* @@ -302,7 +246,7 @@ xpc_check_remote_hb(void) continue; } - ret = xpc_get_remote_heartbeat(part); + ret = xpc_arch_ops.get_remote_heartbeat(part); if (ret != xpSuccess) XPC_DEACTIVATE_PARTITION(part, ret); } @@ -353,7 +297,7 @@ xpc_hb_checker(void *ignore) force_IRQ = 0; dev_dbg(xpc_part, "processing activate IRQs " "received\n"); - xpc_process_activate_IRQ_rcvd(); + xpc_arch_ops.process_activate_IRQ_rcvd(); } /* wait for IRQ or timeout */ @@ -528,7 +472,7 @@ xpc_setup_ch_structures(struct xpc_partition *part) init_waitqueue_head(&ch->idle_wq); } - ret = xpc_setup_ch_structures_sn(part); + ret = xpc_arch_ops.setup_ch_structures(part); if (ret != xpSuccess) goto out_2; @@ -572,7 +516,7 @@ xpc_teardown_ch_structures(struct xpc_partition *part) /* now we can begin tearing down the infrastructure */ - xpc_teardown_ch_structures_sn(part); + xpc_arch_ops.teardown_ch_structures(part); kfree(part->remote_openclose_args_base); part->remote_openclose_args = NULL; @@ -620,12 +564,12 @@ xpc_activating(void *__partid) dev_dbg(xpc_part, "activating partition %d\n", partid); - xpc_allow_hb(partid); + xpc_arch_ops.allow_hb(partid); if (xpc_setup_ch_structures(part) == xpSuccess) { (void)xpc_part_ref(part); /* this will always succeed */ - if (xpc_make_first_contact(part) == xpSuccess) { + if (xpc_arch_ops.make_first_contact(part) == xpSuccess) { xpc_mark_partition_active(part); xpc_channel_mgr(part); /* won't return until partition is deactivating */ @@ -635,12 +579,12 @@ xpc_activating(void *__partid) xpc_teardown_ch_structures(part); } - xpc_disallow_hb(partid); + xpc_arch_ops.disallow_hb(partid); xpc_mark_partition_inactive(part); if (part->reason == xpReactivating) { /* interrupting ourselves results in activating partition */ - xpc_request_partition_reactivation(part); + xpc_arch_ops.request_partition_reactivation(part); } return 0; @@ -713,10 +657,13 @@ xpc_activate_kthreads(stru |