* MAGIC2 indicates that this partition has pulled the remote partititions
* per partition variables that pertain to this partition.
*/
-#define XPC_VP_MAGIC1 0x0053524156435058L /* 'XPCVARS\0'L (little endian) */
-#define XPC_VP_MAGIC2 0x0073726176435058L /* 'XPCvars\0'L (little endian) */
+#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 */
(XPC_RP_MACH_NASIDS(_rp) + \
xpc_nasid_mask_nlongs))
+/*
+ * 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.
+ */
+struct xpc_activate_mq_msghdr_uv {
+ short partid; /* sender's partid */
+ u8 act_state; /* sender's act_state at time msg sent */
+ u8 type; /* message's type */
+ unsigned long rp_ts_jiffies; /* timestamp of sender's rp setup by XPC */
+};
+
+/* 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_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_MARK_ENGAGED_UV 10
+#define XPC_ACTIVATE_MQ_MSG_MARK_DISENGAGED_UV 11
+
+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;
+};
+
+struct xpc_activate_mq_msg_deactivate_req_uv {
+ struct xpc_activate_mq_msghdr_uv hdr;
+ enum xp_retval reason;
+};
+
+struct xpc_activate_mq_msg_chctl_closerequest_uv {
+ struct xpc_activate_mq_msghdr_uv hdr;
+ short ch_number;
+ enum xp_retval reason;
+};
+
+struct xpc_activate_mq_msg_chctl_closereply_uv {
+ struct xpc_activate_mq_msghdr_uv hdr;
+ short ch_number;
+};
+
+struct xpc_activate_mq_msg_chctl_openrequest_uv {
+ struct xpc_activate_mq_msghdr_uv hdr;
+ short ch_number;
+ short entry_size; /* size of notify_mq's GRU messages */
+ short local_nentries; /* ??? Is this needed? What is? */
+};
+
+struct xpc_activate_mq_msg_chctl_openreply_uv {
+ struct xpc_activate_mq_msghdr_uv hdr;
+ 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;
+};
+
/*
* 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
*/
struct xpc_openclose_args {
u16 reason; /* reason why channel is closing */
- u16 msg_size; /* sizeof each message entry */
+ u16 entry_size; /* sizeof each message entry */
u16 remote_nentries; /* #of message entries in remote msg queue */
u16 local_nentries; /* #of message entries in local msg queue */
unsigned long local_msgqueue_pa; /* phys addr of local message queue */
L1_CACHE_ALIGN(sizeof(struct xpc_openclose_args) * \
XPC_MAX_NCHANNELS)
-/* struct xpc_msg flags */
-#define XPC_M_DONE 0x01 /* msg has been received/consumed */
-#define XPC_M_READY 0x02 /* msg is ready to be sent */
-#define XPC_M_INTERRUPT 0x04 /* send interrupt when msg consumed */
+/*
+ * Structures to define a fifo singly-linked list.
+ */
-#define XPC_MSG_ADDRESS(_payload) \
- ((struct xpc_msg *)((u8 *)(_payload) - XPC_MSG_PAYLOAD_OFFSET))
+struct xpc_fifo_entry_uv {
+ struct xpc_fifo_entry_uv *next;
+};
+
+struct xpc_fifo_head_uv {
+ struct xpc_fifo_entry_uv *first;
+ struct xpc_fifo_entry_uv *last;
+ spinlock_t lock;
+ int n_entries;
+};
/*
- * Defines notify entry.
+ * 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
+ * payload is defined by the user via xpc_connect().
+ *
+ * The size of a message (payload and header) sent via the GRU must be either 1
+ * or 2 GRU_CACHE_LINE_BYTES in length.
+ */
+
+struct xpc_notify_mq_msghdr_uv {
+ union {
+ unsigned int gru_msg_hdr; /* FOR GRU INTERNAL USE ONLY */
+ struct xpc_fifo_entry_uv next; /* FOR XPC INTERNAL USE ONLY */
+ } u;
+ short partid; /* FOR XPC INTERNAL USE ONLY */
+ u8 ch_number; /* FOR XPC INTERNAL USE ONLY */
+ u8 size; /* FOR XPC INTERNAL USE ONLY */
+ unsigned int msg_slot_number; /* FOR XPC INTERNAL USE ONLY */
+};
+
+struct xpc_notify_mq_msg_uv {
+ struct xpc_notify_mq_msghdr_uv hdr;
+ 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 {
+struct xpc_notify_sn2 {
u8 type; /* type of notification */
/* the following two fields are only used if type == XPC_N_CALL */
void *key; /* pointer to user's key */
};
-/* struct xpc_notify type of notification */
+/* struct xpc_notify_sn2 type of notification */
-#define XPC_N_CALL 0x01 /* notify function provided by user */
+#define XPC_N_CALL 0x01 /* notify function provided by user */
+
+/*
+ * Define uv's version of the notify entry. It additionally is used to allocate
+ * a msg slot on the remote partition into which is copied a sent message.
+ */
+struct xpc_send_msg_slot_uv {
+ struct xpc_fifo_entry_uv next;
+ unsigned int msg_slot_number;
+ xpc_notify_func func; /* user's notify function */
+ void *key; /* pointer to user's key */
+};
/*
* Define the structure that manages all the stuff required by a channel. In
*/
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_channel_uv {
- /* !!! code is coming */
+ unsigned long remote_notify_mq_gpa; /* gru phys address of remote */
+ /* partition's notify mq */
+
+ struct xpc_send_msg_slot_uv *send_msg_slots;
+ struct xpc_notify_mq_msg_uv *recv_msg_slots;
+
+ struct xpc_fifo_head_uv msg_slot_free_list;
+ struct xpc_fifo_head_uv recv_msg_list; /* deliverable payloads */
};
struct xpc_channel {
short partid; /* ID of remote partition connected */
spinlock_t lock; /* lock for updating this structure */
- u32 flags; /* general flags */
+ unsigned int flags; /* general flags */
enum xp_retval reason; /* reason why channel is disconnect'g */
int reason_line; /* line# disconnect initiated from */
u16 number; /* channel # */
- u16 msg_size; /* sizeof each msg entry */
+ u16 entry_size; /* sizeof each msg entry */
u16 local_nentries; /* #of msg entries in local msg queue */
u16 remote_nentries; /* #of msg entries in remote msg queue */
- void *local_msgqueue_base; /* base address of kmalloc'd space */
- struct xpc_msg *local_msgqueue; /* local message queue */
- void *remote_msgqueue_base; /* base address of kmalloc'd space */
- struct xpc_msg *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 */
-
atomic_t references; /* #of external references to queues */
atomic_t n_on_msg_allocate_wq; /* #on msg allocation wait queue */
u8 delayed_chctl_flags; /* chctl flags received, but delayed */
/* action until channel disconnected */
- /* queue of msg senders who want to be notified when msg received */
-
atomic_t n_to_notify; /* #of msg senders to notify */
- struct xpc_notify *notify_queue; /* notify queue for messages sent */
xpc_channel_func func; /* user's channel function */
void *key; /* pointer to user's key */
struct completion wdisconnect_wait; /* wait for channel disconnect */
- struct xpc_openclose_args *local_openclose_args; /* args passed on */
- /* opening or closing of channel */
-
/* kthread management related fields */
atomic_t kthreads_assigned; /* #of kthreads assigned to channel */
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 */
};
struct xpc_partition_uv {
- /* !!! code is coming */
+ unsigned long remote_activate_mq_gpa; /* gru phys address of remote */
+ /* partition's activate mq */
+ 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
+
+/* struct xpc_partition_uv act_state change requests */
+
+#define XPC_P_ASR_ACTIVATE_UV 0x01
+#define XPC_P_ASR_REACTIVATE_UV 0x02
+#define XPC_P_ASR_DEACTIVATE_UV 0x03
+
struct xpc_partition {
/* XPC HB infrastructure */
union xpc_channel_ctl_flags chctl; /* chctl flags yet to be processed */
spinlock_t chctl_lock; /* chctl flags lock */
- void *local_openclose_args_base; /* base address of kmalloc'd space */
- struct xpc_openclose_args *local_openclose_args; /* local's args */
void *remote_openclose_args_base; /* base address of kmalloc'd space */
struct xpc_openclose_args *remote_openclose_args; /* copy of remote's */
/* args */
extern struct device *xpc_chan;
extern int xpc_disengage_timelimit;
extern int xpc_disengage_timedout;
-extern atomic_t xpc_activate_IRQ_rcvd;
+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 enum xp_retval (*xpc_rsvd_page_init) (struct xpc_rsvd_page *);
+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 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_allocate_msgqueues) (struct xpc_channel *);
-extern void (*xpc_free_msgqueues) (struct xpc_channel *);
+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_msgs) (struct xpc_channel *);
-extern struct xpc_msg *(*xpc_get_deliverable_msg) (struct xpc_channel *);
+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) (int);
-extern enum xp_retval (*xpc_setup_infrastructure) (struct xpc_partition *);
-extern void (*xpc_teardown_infrastructure) (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);
unsigned long *);
extern void (*xpc_send_chctl_openreply) (struct xpc_channel *, unsigned long *);
-extern enum xp_retval (*xpc_send_msg) (struct xpc_channel *, u32, void *, u16,
- u8, xpc_notify_func, void *);
-extern void (*xpc_received_msg) (struct xpc_channel *, struct xpc_msg *);
+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);
extern void xpc_exit_sn2(void);
/* found in xpc_uv.c */
-extern void xpc_init_uv(void);
+extern int xpc_init_uv(void);
extern void xpc_exit_uv(void);
/* found in xpc_partition.c */
extern unsigned long *xpc_mach_nasids;
extern struct xpc_partition *xpc_partitions;
extern void *xpc_kmalloc_cacheline_aligned(size_t, gfp_t, void **);
-extern struct xpc_rsvd_page *xpc_setup_rsvd_page(void);
+extern int xpc_setup_rsvd_page(void);
+extern void xpc_teardown_rsvd_page(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 *);
extern void xpc_initiate_received(short, int, void *);
extern void xpc_process_sent_chctl_flags(struct xpc_partition *);
extern void xpc_connected_callout(struct xpc_channel *);
-extern void xpc_deliver_msg(struct xpc_channel *);
+extern void xpc_deliver_payload(struct xpc_channel *);
extern void xpc_disconnect_channel(const int, struct xpc_channel *,
enum xp_retval, unsigned long *);
extern void xpc_disconnect_callout(struct xpc_channel *, enum xp_retval);
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