diff options
Diffstat (limited to 'drivers/misc/sgi-xp/xpc.h')
| -rw-r--r-- | drivers/misc/sgi-xp/xpc.h | 173 |
1 files changed, 97 insertions, 76 deletions
diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h index 1edf37512de6..b04cfbed9581 100644 --- a/drivers/misc/sgi-xp/xpc.h +++ b/drivers/misc/sgi-xp/xpc.h @@ -122,9 +122,6 @@ struct xpc_rsvd_page { #define XPC_RP_VERSION _XPC_VERSION(2, 0) /* version 2.0 of the reserved page */ -#define XPC_SUPPORTS_RP_STAMP(_version) \ - (_version >= _XPC_VERSION(1, 1)) - /* * Define the structures by which XPC variables can be exported to other * partitions. (There are two: struct xpc_vars and struct xpc_vars_part) @@ -144,8 +141,8 @@ struct xpc_vars_sn2 { u64 heartbeat; DECLARE_BITMAP(heartbeating_to_mask, XP_MAX_NPARTITIONS_SN2); u64 heartbeat_offline; /* if 0, heartbeat should be changing */ - int act_nasid; - int act_phys_cpuid; + int activate_IRQ_nasid; + int activate_IRQ_phys_cpuid; u64 vars_part_pa; u64 amos_page_pa; /* paddr of page of AMOs from MSPEC driver */ AMO_t *amos_page; /* vaddr of page of AMOs from MSPEC driver */ @@ -153,9 +150,6 @@ struct xpc_vars_sn2 { #define XPC_V_VERSION _XPC_VERSION(3, 1) /* version 3.1 of the cross vars */ -#define XPC_SUPPORTS_DISENGAGE_REQUEST(_version) \ - (_version >= _XPC_VERSION(3, 1)) - /* * The following pertains to ia64-sn2 only. * @@ -167,14 +161,14 @@ struct xpc_vars_sn2 { * a PI FSB Protocol error to be generated by the SHUB. For XPC, we need 64 * AMO variables (based on XP_MAX_NPARTITIONS_SN2) to identify the senders of * NOTIFY IRQs, 128 AMO variables (based on XP_NASID_MASK_WORDS) to identify - * the senders of ACTIVATE IRQs, and 2 AMO variables to identify which remote + * the senders of ACTIVATE IRQs, 1 AMO variable to identify which remote * partitions (i.e., XPCs) consider themselves currently engaged with the - * local XPC. + * local XPC and 1 AMO variable to request partition deactivation. */ #define XPC_NOTIFY_IRQ_AMOS 0 #define XPC_ACTIVATE_IRQ_AMOS (XPC_NOTIFY_IRQ_AMOS + XP_MAX_NPARTITIONS_SN2) #define XPC_ENGAGED_PARTITIONS_AMO (XPC_ACTIVATE_IRQ_AMOS + XP_NASID_MASK_WORDS) -#define XPC_DISENGAGE_REQUEST_AMO (XPC_ENGAGED_PARTITIONS_AMO + 1) +#define XPC_DEACTIVATE_REQUEST_AMO (XPC_ENGAGED_PARTITIONS_AMO + 1) /* * The following structure describes the per partition specific variables. @@ -369,6 +363,23 @@ struct xpc_notify { * new messages, by the clearing of the message flags of the acknowledged * messages. */ +struct xpc_channel_sn2 { + + /* various flavors of local and remote Get/Put values */ + + struct xpc_gp *local_GP; /* local Get/Put values */ + struct xpc_gp remote_GP; /* remote Get/Put values */ + struct xpc_gp w_local_GP; /* working local Get/Put values */ + struct xpc_gp w_remote_GP; /* working remote Get/Put values */ + s64 next_msg_to_pull; /* Put value of next msg to pull */ + + struct mutex msg_to_pull_mutex; /* next msg to pull serialization */ +}; + +struct xpc_channel_uv { + /* >>> code is coming */ +}; + struct xpc_channel { short partid; /* ID of remote partition connected */ spinlock_t lock; /* lock for updating this structure */ @@ -407,20 +418,11 @@ struct xpc_channel { xpc_channel_func func; /* user's channel function */ void *key; /* pointer to user's key */ - struct mutex msg_to_pull_mutex; /* next msg to pull serialization */ struct completion wdisconnect_wait; /* wait for channel disconnect */ struct xpc_openclose_args *local_openclose_args; /* args passed on */ /* opening or closing of channel */ - /* various flavors of local and remote Get/Put values */ - - struct xpc_gp *local_GP; /* local Get/Put values */ - struct xpc_gp remote_GP; /* remote Get/Put values */ - struct xpc_gp w_local_GP; /* working local Get/Put values */ - struct xpc_gp w_remote_GP; /* working remote Get/Put values */ - s64 next_msg_to_pull; /* Put value of next msg to pull */ - /* kthread management related fields */ atomic_t kthreads_assigned; /* #of kthreads assigned to channel */ @@ -431,6 +433,11 @@ struct xpc_channel { wait_queue_head_t idle_wq; /* idle kthread wait queue */ + union { + struct xpc_channel_sn2 sn2; + struct xpc_channel_uv uv; + } sn; + } ____cacheline_aligned; /* struct xpc_channel flags */ @@ -467,6 +474,40 @@ struct xpc_channel { * for each partition (a partition will never utilize the structure that * represents itself). */ + +struct xpc_partition_sn2 { + u64 remote_amos_page_pa; /* phys addr of partition's amos page */ + int activate_IRQ_nasid; /* active partition's act/deact nasid */ + int activate_IRQ_phys_cpuid; /* active part's act/deact phys cpuid */ + + u64 remote_vars_pa; /* phys addr of partition's vars */ + u64 remote_vars_part_pa; /* phys addr of partition's vars part */ + u8 remote_vars_version; /* version# of partition's vars */ + + void *local_GPs_base; /* base address of kmalloc'd space */ + struct xpc_gp *local_GPs; /* local Get/Put values */ + void *remote_GPs_base; /* base address of kmalloc'd space */ + struct xpc_gp *remote_GPs; /* copy of remote partition's local */ + /* Get/Put values */ + u64 remote_GPs_pa; /* phys address of remote partition's local */ + /* Get/Put values */ + + u64 remote_openclose_args_pa; /* phys addr of remote's args */ + + int remote_IPI_nasid; /* nasid of where to send IPIs */ + int remote_IPI_phys_cpuid; /* phys CPU ID of where to send IPIs */ + char IPI_owner[8]; /* IPI owner's name */ + + AMO_t *remote_IPI_amo_va; /* address of remote IPI AMO_t structure */ + AMO_t *local_IPI_amo_va; /* address of IPI AMO_t structure */ + + struct timer_list dropped_notify_IRQ_timer; /* dropped IRQ timer */ +}; + +struct xpc_partition_uv { + /* >>> code is coming */ +}; + struct xpc_partition { /* XPC HB infrastructure */ @@ -474,22 +515,15 @@ struct xpc_partition { u8 remote_rp_version; /* version# of partition's rsvd pg */ unsigned long remote_rp_stamp; /* time when rsvd pg was initialized */ u64 remote_rp_pa; /* phys addr of partition's rsvd pg */ - u64 remote_vars_pa; /* phys addr of partition's vars */ - u64 remote_vars_part_pa; /* phys addr of partition's vars part */ u64 last_heartbeat; /* HB at last read */ - u64 remote_amos_page_pa; /* phys addr of partition's amos page */ - int remote_act_nasid; /* active part's act/deact nasid */ - int remote_act_phys_cpuid; /* active part's act/deact phys cpuid */ u32 activate_IRQ_rcvd; /* IRQs since activation */ spinlock_t act_lock; /* protect updating of act_state */ u8 act_state; /* from XPC HB viewpoint */ - u8 remote_vars_version; /* version# of partition's vars */ enum xp_retval reason; /* reason partition is deactivating */ int reason_line; /* line# deactivation initiated from */ - int reactivate_nasid; /* nasid in partition to reactivate */ - unsigned long disengage_request_timeout; /* timeout in jiffies */ - struct timer_list disengage_request_timer; + unsigned long disengage_timeout; /* timeout in jiffies */ + struct timer_list disengage_timer; /* XPC infrastructure referencing and teardown control */ @@ -502,14 +536,6 @@ struct xpc_partition { atomic_t nchannels_engaged; /* #of channels engaged with remote part */ struct xpc_channel *channels; /* array of channel structures */ - void *local_GPs_base; /* base address of kmalloc'd space */ - struct xpc_gp *local_GPs; /* local Get/Put values */ - void *remote_GPs_base; /* base address of kmalloc'd space */ - struct xpc_gp *remote_GPs; /* copy of remote partition's local */ - /* Get/Put values */ - u64 remote_GPs_pa; /* phys address of remote partition's local */ - /* Get/Put values */ - /* fields used to pass args when opening or closing a channel */ void *local_openclose_args_base; /* base address of kmalloc'd space */ @@ -517,19 +543,10 @@ struct xpc_partition { void *remote_openclose_args_base; /* base address of kmalloc'd space */ struct xpc_openclose_args *remote_openclose_args; /* copy of remote's */ /* args */ - u64 remote_openclose_args_pa; /* phys addr of remote's args */ /* IPI sending, receiving and handling related fields */ - int remote_IPI_nasid; /* nasid of where to send IPIs */ - int remote_IPI_phys_cpuid; /* phys CPU ID of where to send IPIs */ - AMO_t *remote_IPI_amo_va; /* address of remote IPI AMO_t structure */ - - AMO_t *local_IPI_amo_va; /* address of IPI AMO_t structure */ u64 local_IPI_amo; /* IPI amo flags yet to be handled */ - char IPI_owner[8]; /* IPI owner's name */ - struct timer_list dropped_IPI_timer; /* dropped IPI timer */ - spinlock_t IPI_lock; /* IPI handler lock */ /* channel manager related fields */ @@ -537,6 +554,11 @@ struct xpc_partition { atomic_t channel_mgr_requests; /* #of requests to activate chan mgr */ wait_queue_head_t channel_mgr_wq; /* channel mgr's wait queue */ + union { + struct xpc_partition_sn2 sn2; + struct xpc_partition_uv uv; + } sn; + } ____cacheline_aligned; /* struct xpc_partition act_state values (for XPC HB) */ @@ -565,10 +587,10 @@ struct xpc_partition { #define XPC_P_DROPPED_IPI_WAIT_INTERVAL (0.25 * HZ) /* number of seconds to wait for other partitions to disengage */ -#define XPC_DISENGAGE_REQUEST_DEFAULT_TIMELIMIT 90 +#define XPC_DISENGAGE_DEFAULT_TIMELIMIT 90 -/* interval in seconds to print 'waiting disengagement' messages */ -#define XPC_DISENGAGE_PRINTMSG_INTERVAL 10 +/* interval in seconds to print 'waiting deactivation' messages */ +#define XPC_DEACTIVATE_PRINTMSG_INTERVAL 10 #define XPC_PARTID(_p) ((short)((_p) - &xpc_partitions[0])) @@ -578,13 +600,11 @@ extern struct xpc_registration xpc_registrations[]; /* found in xpc_main.c */ extern struct device *xpc_part; extern struct device *xpc_chan; -extern int xpc_disengage_request_timelimit; -extern int xpc_disengage_request_timedout; +extern int xpc_disengage_timelimit; +extern int xpc_disengage_timedout; extern atomic_t xpc_activate_IRQ_rcvd; extern wait_queue_head_t xpc_activate_IRQ_wq; extern void *xpc_heartbeating_to_mask; -extern irqreturn_t xpc_notify_IRQ_handler(int, void *); -extern void xpc_dropped_IPI_check(struct xpc_partition *); 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); @@ -598,31 +618,34 @@ extern void (*xpc_online_heartbeat) (void); extern void (*xpc_check_remote_hb) (void); extern enum xp_retval (*xpc_make_first_contact) (struct xpc_partition *); extern u64 (*xpc_get_IPI_flags) (struct xpc_partition *); +extern void (*xpc_notify_senders_of_disconnect) (struct xpc_channel *); +extern void (*xpc_process_msg_IPI) (struct xpc_partition *, int); +extern int (*xpc_n_of_deliverable_msgs) (struct xpc_channel *); extern struct xpc_msg *(*xpc_get_deliverable_msg) (struct xpc_channel *); -extern void (*xpc_initiate_partition_activation) (struct xpc_rsvd_page *, u64, - int); +extern void (*xpc_request_partition_activation) (struct xpc_rsvd_page *, u64, + 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) (int); extern enum xp_retval (*xpc_setup_infrastructure) (struct xpc_partition *); extern void (*xpc_teardown_infrastructure) (struct xpc_partition *); -extern void (*xpc_mark_partition_engaged) (struct xpc_partition *); -extern void (*xpc_mark_partition_disengaged) (struct xpc_partition *); -extern void (*xpc_request_partition_disengage) (struct xpc_partition *); -extern void (*xpc_cancel_partition_disengage_request) (struct xpc_partition *); -extern u64 (*xpc_partition_engaged) (u64); -extern u64 (*xpc_partition_disengage_requested) (u64);; -extern void (*xpc_clear_partition_engaged) (u64); -extern void (*xpc_clear_partition_disengage_request) (u64); - -extern void (*xpc_IPI_send_local_activate) (int); -extern void (*xpc_IPI_send_activated) (struct xpc_partition *); -extern void (*xpc_IPI_send_local_reactivate) (int); -extern void (*xpc_IPI_send_disengage) (struct xpc_partition *); - -extern void (*xpc_IPI_send_closerequest) (struct xpc_channel *, - unsigned long *); -extern void (*xpc_IPI_send_closereply) (struct xpc_channel *, unsigned long *); -extern void (*xpc_IPI_send_openrequest) (struct xpc_channel *, unsigned long *); -extern void (*xpc_IPI_send_openreply) (struct xpc_channel *, unsigned long *); + +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_channel_closerequest) (struct xpc_channel *, + unsigned long *); +extern void (*xpc_send_channel_closereply) (struct xpc_channel *, + unsigned long *); +extern void (*xpc_send_channel_openrequest) (struct xpc_channel *, + unsigned long *); +extern void (*xpc_send_channel_openreply) (struct xpc_channel *, + unsigned long *); extern enum xp_retval (*xpc_send_msg) (struct xpc_channel *, u32, void *, u16, u8, xpc_notify_func, void *); @@ -646,8 +669,6 @@ extern char *xpc_remote_copy_buffer; extern void *xpc_remote_copy_buffer_base; extern void *xpc_kmalloc_cacheline_aligned(size_t, gfp_t, void **); extern struct xpc_rsvd_page *xpc_setup_rsvd_page(void); -extern void xpc_allow_IPI_ops(void); -extern void xpc_restrict_IPI_ops(void); extern int xpc_identify_activate_IRQ_sender(void); extern int xpc_partition_disengaged(struct xpc_partition *); extern enum xp_retval xpc_mark_partition_active(struct xpc_partition *); |