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Diffstat (limited to 'drivers/misc/sgi-xp/xpc.h')
-rw-r--r--drivers/misc/sgi-xp/xpc.h254
1 files changed, 122 insertions, 132 deletions
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)
{
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-05 01:03:39 +0000