sgi-xp: isolate additional sn2 specific code
Move additional sn2 specific code into xpc_sn2.c.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h
index 1edf375..b04cfbe 100644
--- a/drivers/misc/sgi-xp/xpc.h
+++ b/drivers/misc/sgi-xp/xpc.h
@@ -122,9 +122,6 @@
#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 @@
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 @@
#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 @@
* 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 @@
* 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 @@
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 @@
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 @@
* 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 @@
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 @@
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 @@
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 @@
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 @@
#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 @@
/* 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_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_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_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_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 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 *);