* Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved.
*/
-
/*
* Cross Partition Communication (XPC) structures and macros.
*/
#ifndef _DRIVERS_MISC_SGIXP_XPC_H
#define _DRIVERS_MISC_SGIXP_XPC_H
-
#include <linux/interrupt.h>
#include <linux/sysctl.h>
#include <linux/device.h>
#include <asm/sn/shub_mmr.h>
#include "xp.h"
-
/*
* XPC Version numbers consist of a major and minor number. XPC can always
* talk to versions with same major #, and never talk to versions with a
#define XPC_VERSION_MAJOR(_v) ((_v) >> 4)
#define XPC_VERSION_MINOR(_v) ((_v) & 0xf)
-
/*
* The next macros define word or bit representations for given
* C-brick nasid in either the SAL provided bit array representing
/* define the process name of the discovery thread */
#define XPC_DISCOVERY_THREAD_NAME "xpc_discovery"
-
/*
* the reserved page
*
u8 partid; /* SAL: partition ID */
u8 version;
u8 pad1[6]; /* align to next u64 in cacheline */
- volatile u64 vars_pa;
+ u64 vars_pa; /* physical address of struct xpc_vars */
struct timespec stamp; /* time when reserved page was setup by XPC */
u64 pad2[9]; /* align to last u64 in cacheline */
u64 nasids_size; /* SAL: size of each nasid mask in bytes */
};
-#define XPC_RP_VERSION _XPC_VERSION(1,1) /* version 1.1 of the reserved page */
+#define XPC_RP_VERSION _XPC_VERSION(1, 1) /* version 1.1 of the reserved page */
#define XPC_SUPPORTS_RP_STAMP(_version) \
- (_version >= _XPC_VERSION(1,1))
+ (_version >= _XPC_VERSION(1, 1))
/*
* compare stamps - the return value is:
{
int ret;
-
- if ((ret = stamp1->tv_sec - stamp2->tv_sec) == 0) {
+ ret = stamp1->tv_sec - stamp2->tv_sec;
+ if (ret == 0)
ret = stamp1->tv_nsec - stamp2->tv_nsec;
- }
+
return ret;
}
-
/*
* Define the structures by which XPC variables can be exported to other
* partitions. (There are two: struct xpc_vars and struct xpc_vars_part)
AMO_t *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 */
+#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))
-
+ (_version >= _XPC_VERSION(3, 1))
static inline int
-xpc_hb_allowed(partid_t partid, struct xpc_vars *vars)
+xpc_hb_allowed(short partid, struct xpc_vars *vars)
{
return ((vars->heartbeating_to_mask & (1UL << partid)) != 0);
}
static inline void
-xpc_allow_hb(partid_t partid, struct xpc_vars *vars)
+xpc_allow_hb(short partid, struct xpc_vars *vars)
{
u64 old_mask, new_mask;
old_mask = vars->heartbeating_to_mask;
new_mask = (old_mask | (1UL << partid));
} while (cmpxchg(&vars->heartbeating_to_mask, old_mask, new_mask) !=
- old_mask);
+ old_mask);
}
static inline void
-xpc_disallow_hb(partid_t partid, struct xpc_vars *vars)
+xpc_disallow_hb(short partid, struct xpc_vars *vars)
{
u64 old_mask, new_mask;
old_mask = vars->heartbeating_to_mask;
new_mask = (old_mask & ~(1UL << partid));
} while (cmpxchg(&vars->heartbeating_to_mask, old_mask, new_mask) !=
- old_mask);
+ old_mask);
}
-
/*
* The AMOs page consists of a number of AMO variables which are divided into
* four groups, The first two groups are used to identify an IRQ's sender.
#define XPC_ENGAGED_PARTITIONS_AMO (XPC_ACTIVATE_IRQ_AMOS + XP_NASID_MASK_WORDS)
#define XPC_DISENGAGE_REQUEST_AMO (XPC_ENGAGED_PARTITIONS_AMO + 1)
-
/*
* The following structure describes the per partition specific variables.
*
* occupies half a cacheline.
*/
struct xpc_vars_part {
- volatile u64 magic;
+ u64 magic;
u64 openclose_args_pa; /* physical address of open and close args */
u64 GPs_pa; /* physical address of Get/Put values */
* 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 0x0053524156435058L /* 'XPCVARS\0'L (little endian) */
+#define XPC_VP_MAGIC2 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))
+#define XPC_RP_VARS_SIZE L1_CACHE_ALIGN(sizeof(struct xpc_vars))
-#define XPC_RP_PART_NASIDS(_rp) (u64 *) ((u8 *) _rp + XPC_RP_HEADER_SIZE)
+#define XPC_RP_PART_NASIDS(_rp) ((u64 *)((u8 *)(_rp) + XPC_RP_HEADER_SIZE))
#define XPC_RP_MACH_NASIDS(_rp) (XPC_RP_PART_NASIDS(_rp) + xp_nasid_mask_words)
-#define XPC_RP_VARS(_rp) ((struct xpc_vars *) XPC_RP_MACH_NASIDS(_rp) + xp_nasid_mask_words)
-#define XPC_RP_VARS_PART(_rp) (struct xpc_vars_part *) ((u8 *) XPC_RP_VARS(rp) + XPC_RP_VARS_SIZE)
-
+#define XPC_RP_VARS(_rp) ((struct xpc_vars *)(XPC_RP_MACH_NASIDS(_rp) + \
+ xp_nasid_mask_words))
+#define XPC_RP_VARS_PART(_rp) ((struct xpc_vars_part *) \
+ ((u8 *)XPC_RP_VARS(_rp) + XPC_RP_VARS_SIZE))
/*
* Functions registered by add_timer() or called by kernel_thread() only
#define XPC_UNPACK_ARG1(_args) (((u64) _args) & 0xffffffff)
#define XPC_UNPACK_ARG2(_args) ((((u64) _args) >> 32) & 0xffffffff)
-
-
/*
* Define a Get/Put value pair (pointers) used with a message queue.
*/
struct xpc_gp {
- volatile s64 get; /* Get value */
- volatile s64 put; /* Put value */
+ s64 get; /* Get value */
+ s64 put; /* Put value */
};
#define XPC_GP_SIZE \
L1_CACHE_ALIGN(sizeof(struct xpc_gp) * XPC_NCHANNELS)
-
-
/*
* Define a structure that contains arguments associated with opening and
* closing a channel.
#define XPC_OPENCLOSE_ARGS_SIZE \
L1_CACHE_ALIGN(sizeof(struct xpc_openclose_args) * XPC_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 */
-
#define XPC_MSG_ADDRESS(_payload) \
((struct xpc_msg *)((u8 *)(_payload) - XPC_MSG_PAYLOAD_OFFSET))
-
-
/*
* Defines notify entry.
*
* and consumed by the intended recipient.
*/
struct xpc_notify {
- volatile u8 type; /* type of notification */
+ 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 */
+ xpc_notify_func func; /* user's notify function */
+ void *key; /* pointer to user's key */
};
/* struct xpc_notify type of notification */
#define XPC_N_CALL 0x01 /* notify function provided by user */
-
-
/*
* Define the structure that manages all the stuff required by a channel. In
* particular, they are used to manage the messages sent across the channel.
* messages.
*/
struct xpc_channel {
- partid_t partid; /* ID of remote partition connected */
- spinlock_t lock; /* lock for updating this structure */
- u32 flags; /* general flags */
+ short partid; /* ID of remote partition connected */
+ spinlock_t lock; /* lock for updating this structure */
+ u32 flags; /* general flags */
- enum xpc_retval reason; /* reason why channel is disconnect'g */
- int reason_line; /* line# disconnect initiated from */
+ enum xp_retval reason; /* reason why channel is disconnect'g */
+ int reason_line; /* line# disconnect initiated from */
- u16 number; /* channel # */
+ u16 number; /* channel # */
- u16 msg_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*/
+ u16 msg_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 */
- u64 remote_msgqueue_pa; /* phys addr of remote partition's */
- /* local message queue */
+ struct xpc_msg *remote_msgqueue; /* cached copy of remote partition's */
+ /* local message queue */
+ u64 remote_msgqueue_pa; /* phys addr of remote partition's */
+ /* local message queue */
- atomic_t references; /* #of external references to queues */
+ atomic_t references; /* #of external references to queues */
- atomic_t n_on_msg_allocate_wq; /* #on msg allocation wait queue */
- wait_queue_head_t msg_allocate_wq; /* msg allocation wait queue */
+ atomic_t n_on_msg_allocate_wq; /* #on msg allocation wait queue */
+ wait_queue_head_t msg_allocate_wq; /* msg allocation wait queue */
- u8 delayed_IPI_flags; /* IPI flags received, but delayed */
- /* action until channel disconnected */
+ u8 delayed_IPI_flags; /* IPI 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 */
+ 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 */
+ 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 completion wdisconnect_wait; /* wait for channel disconnect */
struct xpc_openclose_args *local_openclose_args; /* args passed on */
- /* opening or closing of channel */
+ /* opening or closing of channel */
/* various flavors of local and remote 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 */
+ s64 next_msg_to_pull; /* Put value of next msg to pull */
/* kthread management related fields */
-// >>> rethink having kthreads_assigned_limit and kthreads_idle_limit; perhaps
-// >>> allow the assigned limit be unbounded and let the idle limit be dynamic
-// >>> dependent on activity over the last interval of time
atomic_t kthreads_assigned; /* #of kthreads assigned to channel */
- u32 kthreads_assigned_limit; /* limit on #of kthreads assigned */
- atomic_t kthreads_idle; /* #of kthreads idle waiting for work */
+ u32 kthreads_assigned_limit; /* limit on #of kthreads assigned */
+ atomic_t kthreads_idle; /* #of kthreads idle waiting for work */
u32 kthreads_idle_limit; /* limit on #of kthreads idle */
atomic_t kthreads_active; /* #of kthreads actively working */
- // >>> following field is temporary
- u32 kthreads_created; /* total #of kthreads created */
wait_queue_head_t idle_wq; /* idle kthread wait queue */
} ____cacheline_aligned;
-
/* struct xpc_channel flags */
-#define XPC_C_WASCONNECTED 0x00000001 /* channel was connected */
+#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_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_SETUP 0x00000020 /* channel's msgqueues are alloc'd */
-#define XPC_C_CONNECTEDCALLOUT 0x00000040 /* connected callout initiated */
+#define XPC_C_CONNECTEDCALLOUT 0x00000040 /* 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 */
+ 0x00000080 /* connected callout completed */
+#define XPC_C_CONNECTED 0x00000100 /* local channel is connected */
+#define XPC_C_CONNECTING 0x00000200 /* 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 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_DISCONNECTED 0x00004000 /* channel is disconnected */
-#define XPC_C_DISCONNECTING 0x00008000 /* channel is being disconnected */
+#define XPC_C_DISCONNECTED 0x00004000 /* channel is disconnected */
+#define XPC_C_DISCONNECTING 0x00008000 /* channel is being disconnected */
#define XPC_C_DISCONNECTINGCALLOUT \
0x00010000 /* disconnecting callout initiated */
#define XPC_C_DISCONNECTINGCALLOUT_MADE \
0x00020000 /* disconnecting callout completed */
-#define XPC_C_WDISCONNECT 0x00040000 /* waiting for channel disconnect */
-
-
+#define XPC_C_WDISCONNECT 0x00040000 /* waiting for channel disconnect */
/*
* Manages channels on a partition basis. There is one of these structures
/* XPC HB infrastructure */
- u8 remote_rp_version; /* version# of partition's rsvd pg */
- struct timespec 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 */
+ u8 remote_rp_version; /* version# of partition's rsvd pg */
+ struct timespec 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 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_nasid; /* active part's act/deact nasid */
int remote_act_phys_cpuid; /* active part's act/deact phys cpuid */
- u32 act_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 xpc_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 */
+ u32 act_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;
-
/* XPC infrastructure referencing and teardown control */
- volatile u8 setup_state; /* infrastructure setup state */
+ u8 setup_state; /* infrastructure setup state */
wait_queue_head_t teardown_wq; /* kthread waiting to teardown infra */
- atomic_t references; /* #of references to infrastructure */
-
+ atomic_t references; /* #of references to infrastructure */
/*
* NONE OF THE PRECEDING FIELDS OF THIS STRUCTURE WILL BE CLEARED WHEN
* 'nchannels' FIELD MUST BE THE FIRST OF THE FIELDS TO BE CLEARED.)
*/
-
- u8 nchannels; /* #of defined channels supported */
- atomic_t nchannels_active; /* #of channels that are not DISCONNECTED */
- 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 */
-
+ u8 nchannels; /* #of defined channels supported */
+ atomic_t nchannels_active; /* #of channels that are not DISCONNECTED */
+ 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 */
- struct xpc_openclose_args *local_openclose_args; /* local's args */
- void *remote_openclose_args_base; /* base address of kmalloc'd space */
+ 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 */
- u64 remote_openclose_args_pa; /* phys addr of remote's args */
-
+ /* 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 */
+ 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 */
- spinlock_t IPI_lock; /* IPI handler lock */
+ 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 */
atomic_t channel_mgr_requests; /* #of requests to activate chan mgr */
- wait_queue_head_t channel_mgr_wq; /* channel mgr's wait queue */
+ wait_queue_head_t channel_mgr_wq; /* channel mgr's wait queue */
} ____cacheline_aligned;
-
/* struct xpc_partition act_state values (for XPC HB) */
#define XPC_P_INACTIVE 0x00 /* partition is not active */
#define XPC_P_ACTIVE 0x03 /* xpc_partition_up() was called */
#define XPC_P_DEACTIVATING 0x04 /* partition deactivation initiated */
-
#define XPC_DEACTIVATE_PARTITION(_p, _reason) \
xpc_deactivate_partition(__LINE__, (_p), (_reason))
-
/* struct xpc_partition setup_state values */
#define XPC_P_UNSET 0x00 /* infrastructure was never setup */
#define XPC_P_WTEARDOWN 0x02 /* waiting to teardown infrastructure */
#define XPC_P_TORNDOWN 0x03 /* infrastructure is torndown */
-
-
/*
* struct xpc_partition IPI_timer #of seconds to wait before checking for
* dropped IPIs. These occur whenever an IPI amo write doesn't complete until
*/
#define XPC_P_DROPPED_IPI_WAIT (0.25 * HZ)
-
/* number of seconds to wait for other partitions to disengage */
#define XPC_DISENGAGE_REQUEST_DEFAULT_TIMELIMIT 90
/* interval in seconds to print 'waiting disengagement' messages */
#define XPC_DISENGAGE_PRINTMSG_INTERVAL 10
-
-#define XPC_PARTID(_p) ((partid_t) ((_p) - &xpc_partitions[0]))
-
-
+#define XPC_PARTID(_p) ((short)((_p) - &xpc_partitions[0]))
/* found in xp_main.c */
extern struct xpc_registration xpc_registrations[];
-
/* found in xpc_main.c */
extern struct device *xpc_part;
extern struct device *xpc_chan;
extern void xpc_create_kthreads(struct xpc_channel *, int, int);
extern void xpc_disconnect_wait(int);
-
/* found in xpc_partition.c */
extern int xpc_exiting;
extern struct xpc_vars *xpc_vars;
extern void xpc_restrict_IPI_ops(void);
extern int xpc_identify_act_IRQ_sender(void);
extern int xpc_partition_disengaged(struct xpc_partition *);
-extern enum xpc_retval xpc_mark_partition_active(struct xpc_partition *);
+extern enum xp_retval xpc_mark_partition_active(struct xpc_partition *);
extern void xpc_mark_partition_inactive(struct xpc_partition *);
extern void xpc_discovery(void);
extern void xpc_check_remote_hb(void);
extern void xpc_deactivate_partition(const int, struct xpc_partition *,
- enum xpc_retval);
-extern enum xpc_retval xpc_initiate_partid_to_nasids(partid_t, void *);
-
+ enum xp_retval);
+extern enum xp_retval xpc_initiate_partid_to_nasids(short, void *);
/* found in xpc_channel.c */
extern void xpc_initiate_connect(int);
extern void xpc_initiate_disconnect(int);
-extern enum xpc_retval xpc_initiate_allocate(partid_t, int, u32, void **);
-extern enum xpc_retval xpc_initiate_send(partid_t, int, void *);
-extern enum xpc_retval xpc_initiate_send_notify(partid_t, int, void *,
- xpc_notify_func, void *);
-extern void xpc_initiate_received(partid_t, int, void *);
-extern enum xpc_retval xpc_setup_infrastructure(struct xpc_partition *);
-extern enum xpc_retval xpc_pull_remote_vars_part(struct xpc_partition *);
+extern enum xp_retval xpc_initiate_allocate(short, int, u32, void **);
+extern enum xp_retval xpc_initiate_send(short, int, void *);
+extern enum xp_retval xpc_initiate_send_notify(short, int, void *,
+ xpc_notify_func, void *);
+extern void xpc_initiate_received(short, int, void *);
+extern enum xp_retval xpc_setup_infrastructure(struct xpc_partition *);
+extern enum xp_retval xpc_pull_remote_vars_part(struct xpc_partition *);
extern void xpc_process_channel_activity(struct xpc_partition *);
extern void xpc_connected_callout(struct xpc_channel *);
extern void xpc_deliver_msg(struct xpc_channel *);
extern void xpc_disconnect_channel(const int, struct xpc_channel *,
- enum xpc_retval, unsigned long *);
-extern void xpc_disconnect_callout(struct xpc_channel *, enum xpc_retval);
-extern void xpc_partition_going_down(struct xpc_partition *, enum xpc_retval);
+ enum xp_retval, unsigned long *);
+extern void xpc_disconnect_callout(struct xpc_channel *, enum xp_retval);
+extern void xpc_partition_going_down(struct xpc_partition *, enum xp_retval);
extern void xpc_teardown_infrastructure(struct xpc_partition *);
-
-
static inline void
xpc_wakeup_channel_mgr(struct xpc_partition *part)
{
- if (atomic_inc_return(&part->channel_mgr_requests) == 1) {
+ if (atomic_inc_return(&part->channel_mgr_requests) == 1)
wake_up(&part->channel_mgr_wq);
- }
}
-
-
/*
* These next two inlines are used to keep us from tearing down a channel's
* msg queues while a thread may be referencing them.
s32 refs = atomic_dec_return(&ch->references);
DBUG_ON(refs < 0);
- if (refs == 0) {
+ if (refs == 0)
xpc_wakeup_channel_mgr(&xpc_partitions[ch->partid]);
- }
}
-
-
#define XPC_DISCONNECT_CHANNEL(_ch, _reason, _irqflgs) \
xpc_disconnect_channel(__LINE__, _ch, _reason, _irqflgs)
-
/*
* These two inlines are used to keep us from tearing down a partition's
* setup infrastructure while a thread may be referencing it.
{
s32 refs = atomic_dec_return(&part->references);
-
DBUG_ON(refs < 0);
- if (refs == 0 && part->setup_state == XPC_P_WTEARDOWN) {
+ if (refs == 0 && part->setup_state == XPC_P_WTEARDOWN)
wake_up(&part->teardown_wq);
- }
}
static inline int
{
int setup;
-
atomic_inc(&part->references);
setup = (part->setup_state == XPC_P_SETUP);
- if (!setup) {
+ if (!setup)
xpc_part_deref(part);
- }
+
return setup;
}
-
-
/*
* The following macro is to be used for the setting of the reason and
* reason_line fields in both the struct xpc_channel and struct xpc_partition
(_p)->reason_line = _line; \
}
-
-
/*
* This next set of inlines are used to keep track of when a partition is
* potentially engaged in accessing memory belonging to another partition.
xpc_mark_partition_engaged(struct xpc_partition *part)
{
unsigned long irq_flags;
- AMO_t *amo = (AMO_t *) __va(part->remote_amos_page_pa +
- (XPC_ENGAGED_PARTITIONS_AMO * sizeof(AMO_t)));
-
+ AMO_t *amo = (AMO_t *)__va(part->remote_amos_page_pa +
+ (XPC_ENGAGED_PARTITIONS_AMO *
+ sizeof(AMO_t)));
local_irq_save(irq_flags);
/* set bit corresponding to our partid in remote partition's AMO */
- FETCHOP_STORE_OP(TO_AMO((u64) &amo->variable), FETCHOP_OR,
- (1UL << sn_partition_id));
+ FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_OR,
+ (1UL << sn_partition_id));
/*
* We must always use the nofault function regardless of whether we
* are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
* didn't, we'd never know that the other partition is down and would
* keep sending IPIs and AMOs to it until the heartbeat times out.
*/
- (void) xp_nofault_PIOR((u64 *) GLOBAL_MMR_ADDR(NASID_GET(&amo->
- variable), xp_nofault_PIOR_target));
+ (void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
+ variable),
+ xp_nofault_PIOR_target));
local_irq_restore(irq_flags);
}
xpc_mark_partition_disengaged(struct xpc_partition *part)
{
unsigned long irq_flags;
- AMO_t *amo = (AMO_t *) __va(part->remote_amos_page_pa +
- (XPC_ENGAGED_PARTITIONS_AMO * sizeof(AMO_t)));
-
+ AMO_t *amo = (AMO_t *)__va(part->remote_amos_page_pa +
+ (XPC_ENGAGED_PARTITIONS_AMO *
+ sizeof(AMO_t)));
local_irq_save(irq_flags);
/* clear bit corresponding to our partid in remote partition's AMO */
- FETCHOP_STORE_OP(TO_AMO((u64) &amo->variable), FETCHOP_AND,
- ~(1UL << sn_partition_id));
+ FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND,
+ ~(1UL << sn_partition_id));
/*
* We must always use the nofault function regardless of whether we
* are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
* didn't, we'd never know that the other partition is down and would
* keep sending IPIs and AMOs to it until the heartbeat times out.
*/
- (void) xp_nofault_PIOR((u64 *) GLOBAL_MMR_ADDR(NASID_GET(&amo->
- variable), xp_nofault_PIOR_target));
+ (void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
+ variable),
+ xp_nofault_PIOR_target));
local_irq_restore(irq_flags);
}
xpc_request_partition_disengage(struct xpc_partition *part)
{
unsigned long irq_flags;
- AMO_t *amo = (AMO_t *) __va(part->remote_amos_page_pa +
- (XPC_DISENGAGE_REQUEST_AMO * sizeof(AMO_t)));
-
+ AMO_t *amo = (AMO_t *)__va(part->remote_amos_page_pa +
+ (XPC_DISENGAGE_REQUEST_AMO * sizeof(AMO_t)));
local_irq_save(irq_flags);
/* set bit corresponding to our partid in remote partition's AMO */
- FETCHOP_STORE_OP(TO_AMO((u64) &amo->variable), FETCHOP_OR,
- (1UL << sn_partition_id));
+ FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_OR,
+ (1UL << sn_partition_id));
/*
* We must always use the nofault function regardless of whether we
* are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
* didn't, we'd never know that the other partition is down and would
* keep sending IPIs and AMOs to it until the heartbeat times out.
*/
- (void) xp_nofault_PIOR((u64 *) GLOBAL_MMR_ADDR(NASID_GET(&amo->
- variable), xp_nofault_PIOR_target));
+ (void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
+ variable),
+ xp_nofault_PIOR_target));
local_irq_restore(irq_flags);
}
xpc_cancel_partition_disengage_request(struct xpc_partition *part)
{
unsigned long irq_flags;
- AMO_t *amo = (AMO_t *) __va(part->remote_amos_page_pa +
- (XPC_DISENGAGE_REQUEST_AMO * sizeof(AMO_t)));
-
+ AMO_t *amo = (AMO_t *)__va(part->remote_amos_page_pa +
+ (XPC_DISENGAGE_REQUEST_AMO * sizeof(AMO_t)));
local_irq_save(irq_flags);
/* clear bit corresponding to our partid in remote partition's AMO */
- FETCHOP_STORE_OP(TO_AMO((u64) &amo->variable), FETCHOP_AND,
- ~(1UL << sn_partition_id));
+ FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND,
+ ~(1UL << sn_partition_id));
/*
* We must always use the nofault function regardless of whether we
* are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
* didn't, we'd never know that the other partition is down and would
* keep sending IPIs and AMOs to it until the heartbeat times out.
*/
- (void) xp_nofault_PIOR((u64 *) GLOBAL_MMR_ADDR(NASID_GET(&amo->
- variable), xp_nofault_PIOR_target));
+ (void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
+ variable),
+ xp_nofault_PIOR_target));
local_irq_restore(irq_flags);
}
{
AMO_t *amo = xpc_vars->amos_page + XPC_ENGAGED_PARTITIONS_AMO;
-
/* return our partition's AMO variable ANDed with partid_mask */
- return (FETCHOP_LOAD_OP(TO_AMO((u64) &amo->variable), FETCHOP_LOAD) &
- partid_mask);
+ return (FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_LOAD) &
+ partid_mask);
}
static inline u64
{
AMO_t *amo = xpc_vars->amos_page + XPC_DISENGAGE_REQUEST_AMO;
-
/* return our partition's AMO variable ANDed with partid_mask */
- return (FETCHOP_LOAD_OP(TO_AMO((u64) &amo->variable), FETCHOP_LOAD) &
- partid_mask);
+ return (FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_LOAD) &
+ partid_mask);
}
static inline void
{
AMO_t *amo = xpc_vars->amos_page + XPC_ENGAGED_PARTITIONS_AMO;
-
/* clear bit(s) based on partid_mask in our partition's AMO */
- FETCHOP_STORE_OP(TO_AMO((u64) &amo->variable), FETCHOP_AND,
- ~partid_mask);
+ FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND,
+ ~partid_mask);
}
static inline void
{
AMO_t *amo = xpc_vars->amos_page + XPC_DISENGAGE_REQUEST_AMO;
-
/* clear bit(s) based on partid_mask in our partition's AMO */
- FETCHOP_STORE_OP(TO_AMO((u64) &amo->variable), FETCHOP_AND,
- ~partid_mask);
+ FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND,
+ ~partid_mask);
}
-
-
/*
* The following set of macros and inlines are used for the sending and
* receiving of IPIs (also known as IRQs). There are two flavors of IPIs,
static inline u64
xpc_IPI_receive(AMO_t *amo)
{
- return FETCHOP_LOAD_OP(TO_AMO((u64) &amo->variable), FETCHOP_CLEAR);
+ return FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_CLEAR);
}
-
-static inline enum xpc_retval
+static inline enum xp_retval
xpc_IPI_send(AMO_t *amo, u64 flag, int nasid, int phys_cpuid, int vector)
{
int ret = 0;
unsigned long irq_flags;
-
local_irq_save(irq_flags);
- FETCHOP_STORE_OP(TO_AMO((u64) &amo->variable), FETCHOP_OR, flag);
+ FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_OR, flag);
sn_send_IPI_phys(nasid, phys_cpuid, vector, 0);
/*
* didn't, we'd never know that the other partition is down and would
* keep sending IPIs and AMOs to it until the heartbeat times out.
*/
- ret = xp_nofault_PIOR((u64 *) GLOBAL_MMR_ADDR(NASID_GET(&amo->variable),
- xp_nofault_PIOR_target));
+ ret = xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->variable),
+ xp_nofault_PIOR_target));
local_irq_restore(irq_flags);
- return ((ret == 0) ? xpcSuccess : xpcPioReadError);
+ return ((ret == 0) ? xpSuccess : xpPioReadError);
}
-
/*
* IPIs associated with SGI_XPC_ACTIVATE IRQ.
*/
*/
static inline void
xpc_activate_IRQ_send(u64 amos_page_pa, int from_nasid, int to_nasid,
- int to_phys_cpuid)
+ int to_phys_cpuid)
{
int w_index = XPC_NASID_W_INDEX(from_nasid);
int b_index = XPC_NASID_B_INDEX(from_nasid);
- AMO_t *amos = (AMO_t *) __va(amos_page_pa +
- (XPC_ACTIVATE_IRQ_AMOS * sizeof(AMO_t)));
-
+ AMO_t *amos = (AMO_t *)__va(amos_page_pa +
+ (XPC_ACTIVATE_IRQ_AMOS * sizeof(AMO_t)));
- (void) xpc_IPI_send(&amos[w_index], (1UL << b_index), to_nasid,
- to_phys_cpuid, SGI_XPC_ACTIVATE);
+ (void)xpc_IPI_send(&amos[w_index], (1UL << b_index), to_nasid,
+ to_phys_cpuid, SGI_XPC_ACTIVATE);
}
static inline void
xpc_IPI_send_activate(struct xpc_vars *vars)
{
xpc_activate_IRQ_send(vars->amos_page_pa, cnodeid_to_nasid(0),
- vars->act_nasid, vars->act_phys_cpuid);
+ vars->act_nasid, vars->act_phys_cpuid);
}
static inline void
xpc_IPI_send_activated(struct xpc_partition *part)
{
xpc_activate_IRQ_send(part->remote_amos_page_pa, cnodeid_to_nasid(0),
- part->remote_act_nasid, part->remote_act_phys_cpuid);
+ part->remote_act_nasid,
+ part->remote_act_phys_cpuid);
}
static inline void
xpc_IPI_send_reactivate(struct xpc_partition *part)
{
xpc_activate_IRQ_send(xpc_vars->amos_page_pa, part->reactivate_nasid,
- xpc_vars->act_nasid, xpc_vars->act_phys_cpuid);
+ xpc_vars->act_nasid, xpc_vars->act_phys_cpuid);
}
static inline void
xpc_IPI_send_disengage(struct xpc_partition *part)
{
xpc_activate_IRQ_send(part->remote_amos_page_pa, cnodeid_to_nasid(0),
- part->remote_act_nasid, part->remote_act_phys_cpuid);
+ part->remote_act_nasid,
+ part->remote_act_phys_cpuid);
}
-
/*
* IPIs associated with SGI_XPC_NOTIFY IRQ.
*/
static inline void
xpc_notify_IRQ_send(struct xpc_channel *ch, u8 ipi_flag, char *ipi_flag_string,
- unsigned long *irq_flags)
+ unsigned long *irq_flags)
{
struct xpc_partition *part = &xpc_partitions[ch->partid];
- enum xpc_retval ret;
-
+ enum xp_retval ret;
if (likely(part->act_state != XPC_P_DEACTIVATING)) {
ret = xpc_IPI_send(part->remote_IPI_amo_va,
- (u64) ipi_flag << (ch->number * 8),
- part->remote_IPI_nasid,
- part->remote_IPI_phys_cpuid,
- SGI_XPC_NOTIFY);
+ (u64)ipi_flag << (ch->number * 8),
+ part->remote_IPI_nasid,
+ part->remote_IPI_phys_cpuid, SGI_XPC_NOTIFY);
dev_dbg(xpc_chan, "%s sent to partid=%d, channel=%d, ret=%d\n",
ipi_flag_string, ch->partid, ch->number, ret);
- if (unlikely(ret != xpcSuccess)) {
- if (irq_flags != NULL) {
+ if (unlikely(ret != xpSuccess)) {
+ if (irq_flags != NULL)
spin_unlock_irqrestore(&ch->lock, *irq_flags);
- }
XPC_DEACTIVATE_PARTITION(part, ret);
- if (irq_flags != NULL) {
+ if (irq_flags != NULL)
spin_lock_irqsave(&ch->lock, *irq_flags);
- }
}
}
}
-
/*
* Make it look like the remote partition, which is associated with the
* specified channel, sent us an IPI. This faked IPI will be handled
static inline void
xpc_notify_IRQ_send_local(struct xpc_channel *ch, u8 ipi_flag,
- char *ipi_flag_string)
+ char *ipi_flag_string)
{
struct xpc_partition *part = &xpc_partitions[ch->partid];
-
- FETCHOP_STORE_OP(TO_AMO((u64) &part->local_IPI_amo_va->variable),
- FETCHOP_OR, ((u64) ipi_flag << (ch->number * 8)));
+ FETCHOP_STORE_OP(TO_AMO((u64)&part->local_IPI_amo_va->variable),
+ FETCHOP_OR, ((u64)ipi_flag << (ch->number * 8)));
dev_dbg(xpc_chan, "%s sent local from partid=%d, channel=%d\n",
ipi_flag_string, ch->partid, ch->number);
}
-
/*
* The sending and receiving of IPIs includes the setting of an AMO variable
* to indicate the reason the IPI was sent. The 64-bit variable is divided
#define XPC_IPI_OPENREPLY 0x08
#define XPC_IPI_MSGREQUEST 0x10
-
/* given an AMO variable and a channel#, get its associated IPI flags */
#define XPC_GET_IPI_FLAGS(_amo, _c) ((u8) (((_amo) >> ((_c) * 8)) & 0xff))
#define XPC_SET_IPI_FLAGS(_amo, _c, _f) (_amo) |= ((u64) (_f) << ((_c) * 8))
-#define XPC_ANY_OPENCLOSE_IPI_FLAGS_SET(_amo) ((_amo) & __IA64_UL_CONST(0x0f0f0f0f0f0f0f0f))
-#define XPC_ANY_MSG_IPI_FLAGS_SET(_amo) ((_amo) & __IA64_UL_CONST(0x1010101010101010))
-
+#define XPC_ANY_OPENCLOSE_IPI_FLAGS_SET(_amo) ((_amo) & 0x0f0f0f0f0f0f0f0fUL)
+#define XPC_ANY_MSG_IPI_FLAGS_SET(_amo) ((_amo) & 0x1010101010101010UL)
static inline void
xpc_IPI_send_closerequest(struct xpc_channel *ch, unsigned long *irq_flags)
{
struct xpc_openclose_args *args = ch->local_openclose_args;
-
args->reason = ch->reason;
XPC_NOTIFY_IRQ_SEND(ch, XPC_IPI_CLOSEREQUEST, irq_flags);
{
struct xpc_openclose_args *args = ch->local_openclose_args;
-
args->msg_size = ch->msg_size;
args->local_nentries = ch->local_nentries;
{
struct xpc_openclose_args *args = ch->local_openclose_args;
-
args->remote_nentries = ch->remote_nentries;
args->local_nentries = ch->local_nentries;
args->local_msgqueue_pa = __pa(ch->local_msgqueue);
XPC_NOTIFY_IRQ_SEND_LOCAL(ch, XPC_IPI_MSGREQUEST);
}
-
/*
* Memory for XPC's AMO variables is allocated by the MSPEC driver. These
* pages are located in the lowest granule. The lowest granule uses 4k pages
{
AMO_t *amo = xpc_vars->amos_page + index;
-
- (void) xpc_IPI_receive(amo); /* clear AMO variable */
+ (void)xpc_IPI_receive(amo); /* clear AMO variable */
return amo;
}
-
-
-static inline enum xpc_retval
+static inline enum xp_retval
xpc_map_bte_errors(bte_result_t error)
{
- if (error == BTE_SUCCESS)
- return xpcSuccess;
-
- if (is_shub2()) {
- if (BTE_VALID_SH2_ERROR(error))
- return xpcBteSh2Start + error;
- return xpcBteUnmappedError;
- }
- switch (error) {
- case BTE_SUCCESS: return xpcSuccess;
- case BTEFAIL_DIR: return xpcBteDirectoryError;
- case BTEFAIL_POISON: return xpcBtePoisonError;
- case BTEFAIL_WERR: return xpcBteWriteError;
- case BTEFAIL_ACCESS: return xpcBteAccessError;
- case BTEFAIL_PWERR: return xpcBtePWriteError;
- case BTEFAIL_PRERR: return xpcBtePReadError;
- case BTEFAIL_TOUT: return xpcBteTimeOutError;
- case BTEFAIL_XTERR: return xpcBteXtalkError;
- case BTEFAIL_NOTAVAIL: return xpcBteNotAvailable;
- default: return xpcBteUnmappedError;
- }
+ return ((error == BTE_SUCCESS) ? xpSuccess : xpBteCopyError);
}
-
-
/*
* Check to see if there is any channel activity to/from the specified
* partition.
u64 IPI_amo;
unsigned long irq_flags;
-
IPI_amo = xpc_IPI_receive(part->local_IPI_amo_va);
- if (IPI_amo == 0) {
+ if (IPI_amo == 0)
return;
- }
spin_lock_irqsave(&part->IPI_lock, irq_flags);
part->local_IPI_amo |= IPI_amo;
xpc_wakeup_channel_mgr(part);
}
-
#endif /* _DRIVERS_MISC_SGIXP_XPC_H */
-
projects / linux-2.6 / blobdiff