diff options
Diffstat (limited to 'drivers/misc/sgi-xp/xpc.h')
| -rw-r--r-- | drivers/misc/sgi-xp/xpc.h | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h index b94d5f767703..71db60edff65 100644 --- a/drivers/misc/sgi-xp/xpc.h +++ b/drivers/misc/sgi-xp/xpc.h @@ -71,14 +71,10 @@ * 'SAL_nasids_size'. (Local partition's mask pointers are xpc_part_nasids * and xpc_mach_nasids.) * - * vars (ia64-sn2 only) - * vars part (ia64-sn2 only) - * * Immediately following the mach_nasids mask are the XPC variables * required by other partitions. First are those that are generic to all * partitions (vars), followed on the next available cacheline by those * which are partition specific (vars part). These are setup by XPC. - * (Local partition's vars pointers are xpc_vars and xpc_vars_part.) * * Note: Until 'ts_jiffies' is set non-zero, the partition XPC code has not been * initialized. @@ -93,9 +89,6 @@ struct xpc_rsvd_page { unsigned long ts_jiffies; /* timestamp when rsvd pg was setup by XPC */ union { 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; @@ -106,84 +99,14 @@ struct xpc_rsvd_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 - * partitions. (There are two: struct xpc_vars and struct xpc_vars_part) - */ - -/* - * The following structure describes the partition generic variables - * needed by other partitions in order to properly initialize. - * - * struct xpc_vars version number also applies to struct xpc_vars_part. - * Changes to either structure and/or related functionality should be - * reflected by incrementing either the major or minor version numbers - * of struct xpc_vars. - */ -struct xpc_vars_sn2 { - u8 version; - u64 heartbeat; - DECLARE_BITMAP(heartbeating_to_mask, XP_MAX_NPARTITIONS_SN2); - u64 heartbeat_offline; /* if 0, heartbeat should be changing */ - int activate_IRQ_nasid; - int activate_IRQ_phys_cpuid; - unsigned long vars_part_pa; - unsigned long amos_page_pa;/* paddr of page of amos from MSPEC driver */ - struct amo *amos_page; /* vaddr of page of amos from MSPEC driver */ -}; - -#define XPC_V_VERSION _XPC_VERSION(3, 1) /* version 3.1 of the cross vars */ - -/* - * The following structure describes the per partition specific variables. - * - * An array of these structures, one per partition, will be defined. As a - * partition becomes active XPC will copy the array entry corresponding to - * itself from that partition. It is desirable that the size of this structure - * evenly divides into a 128-byte cacheline, such that none of the entries in - * this array crosses a 128-byte cacheline boundary. As it is now, each entry - * occupies 64-bytes. - */ -struct xpc_vars_part_sn2 { - u64 magic; - - unsigned long openclose_args_pa; /* phys addr of open and close args */ - unsigned long GPs_pa; /* physical address of Get/Put values */ - - unsigned long chctl_amo_pa; /* physical address of chctl flags' amo */ - - int notify_IRQ_nasid; /* nasid of where to send notify IRQs */ - int notify_IRQ_phys_cpuid; /* CPUID of where to send notify IRQs */ - - u8 nchannels; /* #of defined channels supported */ - - u8 reserved[23]; /* pad to a full 64 bytes */ -}; - -/* - * The vars_part MAGIC numbers play a part in the first contact protocol. - * - * MAGIC1 indicates that the per partition specific variables for a remote - * partition have been initialized by this partition. - * - * MAGIC2 indicates that this partition has pulled the remote partititions - * per partition variables that pertain to this partition. - */ -#define XPC_VP_MAGIC1_SN2 0x0053524156435058L /* 'XPCVARS\0'L (little endian) */ -#define XPC_VP_MAGIC2_SN2 0x0073726176435058L /* 'XPCvars\0'L (little endian) */ - /* the reserved page sizes and offsets */ #define XPC_RP_HEADER_SIZE L1_CACHE_ALIGN(sizeof(struct xpc_rsvd_page)) -#define XPC_RP_VARS_SIZE L1_CACHE_ALIGN(sizeof(struct xpc_vars_sn2)) #define XPC_RP_PART_NASIDS(_rp) ((unsigned long *)((u8 *)(_rp) + \ XPC_RP_HEADER_SIZE)) #define XPC_RP_MACH_NASIDS(_rp) (XPC_RP_PART_NASIDS(_rp) + \ xpc_nasid_mask_nlongs) -#define XPC_RP_VARS(_rp) ((struct xpc_vars_sn2 *) \ - (XPC_RP_MACH_NASIDS(_rp) + \ - xpc_nasid_mask_nlongs)) /* @@ -298,17 +221,6 @@ struct xpc_activate_mq_msg_chctl_opencomplete_uv { #define XPC_UNPACK_ARG2(_args) ((((u64)_args) >> 32) & 0xffffffff) /* - * Define a Get/Put value pair (pointers) used with a message queue. - */ -struct xpc_gp_sn2 { - s64 get; /* Get value */ - s64 put; /* Put value */ -}; - -#define XPC_GP_SIZE \ - L1_CACHE_ALIGN(sizeof(struct xpc_gp_sn2) * XPC_MAX_NCHANNELS) - -/* * Define a structure that contains arguments associated with opening and * closing a channel. */ @@ -341,30 +253,6 @@ struct xpc_fifo_head_uv { }; /* - * Define a sn2 styled message. - * - * A user-defined message resides in the payload area. The max size of the - * payload is defined by the user via xpc_connect(). - * - * The size of a message entry (within a message queue) must be a 128-byte - * cacheline sized multiple in order to facilitate the BTE transfer of messages - * from one message queue to another. - */ -struct xpc_msg_sn2 { - u8 flags; /* FOR XPC INTERNAL USE ONLY */ - u8 reserved[7]; /* FOR XPC INTERNAL USE ONLY */ - s64 number; /* FOR XPC INTERNAL USE ONLY */ - - u64 payload; /* user defined portion of message */ -}; - -/* struct xpc_msg_sn2 flags */ - -#define XPC_M_SN2_DONE 0x01 /* msg has been received/consumed */ -#define XPC_M_SN2_READY 0x02 /* msg is ready to be sent */ -#define XPC_M_SN2_INTERRUPT 0x04 /* send interrupt when msg consumed */ - -/* * The format of a uv XPC notify_mq GRU message is as follows: * * A user-defined message resides in the payload area. The max size of the @@ -390,20 +278,6 @@ struct xpc_notify_mq_msg_uv { unsigned long payload; }; -/* - * Define sn2's notify entry. - * - * This is used to notify a message's sender that their message was received - * and consumed by the intended recipient. - */ -struct xpc_notify_sn2 { - u8 type; /* type of notification */ - - /* the following two fields are only used if type == XPC_N_CALL */ - xpc_notify_func func; /* user's notify function */ - void *key; /* pointer to user's key */ -}; - /* struct xpc_notify_sn2 type of notification */ #define XPC_N_CALL 0x01 /* notify function provided by user */ @@ -431,102 +305,6 @@ struct xpc_send_msg_slot_uv { * of these structures for each potential channel connection to that partition. */ -/* - * The following is sn2 only. - * - * Each channel structure manages two message queues (circular buffers). - * They are allocated at the time a channel connection is made. One of - * these message queues (local_msgqueue) holds the locally created messages - * that are destined for the remote partition. The other of these message - * queues (remote_msgqueue) is a locally cached copy of the remote partition's - * own local_msgqueue. - * - * The following is a description of the Get/Put pointers used to manage these - * two message queues. Consider the local_msgqueue to be on one partition - * and the remote_msgqueue to be its cached copy on another partition. A - * description of what each of the lettered areas contains is included. - * - * - * local_msgqueue remote_msgqueue - * - * |/////////| |/////////| - * w_remote_GP.get --> +---------+ |/////////| - * | F | |/////////| - * remote_GP.get --> +---------+ +---------+ <-- local_GP->get - * | | | | - * | | | E | - * | | | | - * | | +---------+ <-- w_local_GP.get - * | B | |/////////| - * | | |////D////| - * | | |/////////| - * | | +---------+ <-- w_remote_GP.put - * | | |////C////| - * local_GP->put --> +---------+ +---------+ <-- remote_GP.put - * | | |/////////| - * | A | |/////////| - * | | |/////////| - * w_local_GP.put --> +---------+ |/////////| - * |/////////| |/////////| - * - * - * ( remote_GP.[get|put] are cached copies of the remote - * partition's local_GP->[get|put], and thus their values can - * lag behind their counterparts on the remote partition. ) - * - * - * A - Messages that have been allocated, but have not yet been sent to the - * remote partition. - * - * B - Messages that have been sent, but have not yet been acknowledged by the - * remote partition as having been received. - * - * C - Area that needs to be prepared for the copying of sent messages, by - * the clearing of the message flags of any previously received messages. - * - * D - Area into which sent messages are to be copied from the remote - * partition's local_msgqueue and then delivered to their intended - * recipients. [ To allow for a multi-message copy, another pointer - * (next_msg_to_pull) has been added to keep track of the next message - * number needing to be copied (pulled). It chases after w_remote_GP.put. - * Any messages lying between w_local_GP.get and next_msg_to_pull have - * been copied and are ready to be delivered. ] - * - * E - Messages that have been copied and delivered, but have not yet been - * acknowledged by the recipient as having been received. - * - * F - Messages that have been acknowledged, but XPC has not yet notified the - * sender that the message was received by its intended recipient. - * This is also an area that needs to be prepared for the allocating of - * new messages, by the clearing of the message flags of the acknowledged - * messages. - */ - -struct xpc_channel_sn2 { - struct xpc_openclose_args *local_openclose_args; /* args passed on */ - /* opening or closing of channel */ - - void *local_msgqueue_base; /* base address of kmalloc'd space */ - struct xpc_msg_sn2 *local_msgqueue; /* local message queue */ - void *remote_msgqueue_base; /* base address of kmalloc'd space */ - struct xpc_msg_sn2 *remote_msgqueue; /* cached copy of remote */ - /* partition's local message queue */ - unsigned long remote_msgqueue_pa; /* phys addr of remote partition's */ - /* local message queue */ - - struct xpc_notify_sn2 *notify_queue;/* notify queue for messages sent */ - - /* various flavors of local and remote Get/Put values */ - - struct xpc_gp_sn2 *local_GP; /* local Get/Put values */ - struct xpc_gp_sn2 remote_GP; /* remote Get/Put values */ - struct xpc_gp_sn2 w_local_GP; /* working local Get/Put values */ - struct xpc_gp_sn2 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 { void *cached_notify_gru_mq_desc; /* remote partition's notify mq's */ /* gru mq descriptor */ @@ -579,7 +357,6 @@ 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; @@ -666,43 +443,6 @@ xpc_any_msg_chctl_flags_set(union xpc_channel_ctl_flags *chctl) return 0; } -/* - * Manage channels on a partition basis. There is one of these structures - * for each partition (a partition will never utilize the structure that - * represents itself). - */ - -struct xpc_partition_sn2 { - unsigned long remote_amos_page_pa; /* paddr 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 */ - - unsigned long remote_vars_pa; /* phys addr of partition's vars */ - unsigned long remote_vars_part_pa; /* paddr 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_sn2 *local_GPs; /* local Get/Put values */ - void *remote_GPs_base; /* base address of kmalloc'd space */ - struct xpc_gp_sn2 *remote_GPs; /* copy of remote partition's local */ - /* Get/Put values */ - unsigned long remote_GPs_pa; /* phys addr of remote partition's local */ - /* Get/Put values */ - - void *local_openclose_args_base; /* base address of kmalloc'd space */ - struct xpc_openclose_args *local_openclose_args; /* local's args */ - unsigned long remote_openclose_args_pa; /* phys addr of remote's args */ - - int notify_IRQ_nasid; /* nasid of where to send notify IRQs */ - int notify_IRQ_phys_cpuid; /* CPUID of where to send notify IRQs */ - char notify_IRQ_owner[8]; /* notify IRQ's owner's name */ - - struct amo *remote_chctl_amo_va; /* addr of remote chctl flags' amo */ - struct amo *local_chctl_amo_va; /* address of chctl flags' amo */ - - struct timer_list dropped_notify_IRQ_timer; /* dropped IRQ timer */ -}; - struct xpc_partition_uv { unsigned long heartbeat_gpa; /* phys addr of partition's heartbeat */ struct xpc_heartbeat_uv cached_heartbeat; /* cached copy of */ @@ -774,7 +514,6 @@ struct xpc_partition { wait_queue_head_t channel_mgr_wq; /* channel mgr's wait queue */ union { - struct xpc_partition_sn2 sn2; struct xpc_partition_uv uv; } sn; @@ -854,14 +593,6 @@ struct xpc_arch_operations { #define XPC_P_SS_WTEARDOWN 0x02 /* waiting to teardown infrastructure */ #define XPC_P_SS_TORNDOWN 0x03 /* infrastructure is torndown */ -/* - * struct xpc_partition_sn2's dropped notify IRQ timer is set to wait the - * following interval #of seconds before checking for dropped notify IRQs. - * These can occur whenever an IRQ's associated amo write doesn't complete - * until after the IRQ was received. - */ -#define XPC_DROPPED_NOTIFY_IRQ_WAIT_INTERVAL (0.25 * HZ) - /* number of seconds to wait for other partitions to disengage */ #define XPC_DISENGAGE_DEFAULT_TIMELIMIT 90 @@ -888,10 +619,6 @@ 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); -/* found in xpc_sn2.c */ -extern int xpc_init_sn2(void); -extern void xpc_exit_sn2(void); - /* found in xpc_uv.c */ extern int xpc_init_uv(void); extern void xpc_exit_uv(void); |