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authorDean Nelson <dcn@sgi.com>2008-04-22 14:48:01 -0500
committerTony Luck <tony.luck@intel.com>2008-04-22 15:08:29 -0700
commit4a3ad2ddc0b920cd3ead84b0c67599be02d689ca (patch)
tree244e6cc7fefcf5c8c5d8245c5ac9923835a7e366 /drivers
parent45d9ca492e4bd1522d1b5bd125c2908f1cee3d4a (diff)
[IA64] run some drivers/misc/sgi-xp through scripts/Lindent
Ran patches through scripts/Lindent (part 1). Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/misc/sgi-xp/xp.h80
-rw-r--r--drivers/misc/sgi-xp/xp_main.c98
-rw-r--r--drivers/misc/sgi-xp/xp_nofault.S1
-rw-r--r--drivers/misc/sgi-xp/xpc.h442
-rw-r--r--drivers/misc/sgi-xp/xpc_partition.c328
5 files changed, 396 insertions, 553 deletions
diff --git a/drivers/misc/sgi-xp/xp.h b/drivers/misc/sgi-xp/xp.h
index fb65981754c..87171682664 100644
--- a/drivers/misc/sgi-xp/xp.h
+++ b/drivers/misc/sgi-xp/xp.h
@@ -6,30 +6,25 @@
* Copyright (C) 2004-2008 Silicon Graphics, Inc. All rights reserved.
*/
-
/*
* External Cross Partition (XP) structures and defines.
*/
-
#ifndef _DRIVERS_MISC_SGIXP_XP_H
#define _DRIVERS_MISC_SGIXP_XP_H
-
#include <linux/cache.h>
#include <linux/hardirq.h>
#include <linux/mutex.h>
#include <asm/sn/types.h>
#include <asm/sn/bte.h>
-
#ifdef USE_DBUG_ON
#define DBUG_ON(condition) BUG_ON(condition)
#else
#define DBUG_ON(condition)
#endif
-
/*
* Define the maximum number of logically defined partitions the system
* can support. It is constrained by the maximum number of hardware
@@ -43,7 +38,6 @@
*/
#define XP_MAX_PARTITIONS 64
-
/*
* Define the number of u64s required to represent all the C-brick nasids
* as a bitmap. The cross-partition kernel modules deal only with
@@ -54,7 +48,6 @@
#define XP_NASID_MASK_BYTES ((XP_MAX_PHYSNODE_ID + 7) / 8)
#define XP_NASID_MASK_WORDS ((XP_MAX_PHYSNODE_ID + 63) / 64)
-
/*
* Wrapper for bte_copy() that should it return a failure status will retry
* the bte_copy() once in the hope that the failure was due to a temporary
@@ -74,7 +67,6 @@ xp_bte_copy(u64 src, u64 vdst, u64 len, u64 mode, void *notification)
bte_result_t ret;
u64 pdst = ia64_tpa(vdst);
-
/*
* Ensure that the physically mapped memory is contiguous.
*
@@ -96,7 +88,6 @@ xp_bte_copy(u64 src, u64 vdst, u64 len, u64 mode, void *notification)
return ret;
}
-
/*
* XPC establishes channel connections between the local partition and any
* other partition that is currently up. Over these channels, kernel-level
@@ -122,7 +113,6 @@ xp_bte_copy(u64 src, u64 vdst, u64 len, u64 mode, void *notification)
#error XPC_NCHANNELS exceeds MAXIMUM allowed.
#endif
-
/*
* The format of an XPC message is as follows:
*
@@ -160,12 +150,10 @@ struct xpc_msg {
u64 payload; /* user defined portion of message */
};
-
#define XPC_MSG_PAYLOAD_OFFSET (u64) (&((struct xpc_msg *)0)->payload)
#define XPC_MSG_SIZE(_payload_size) \
L1_CACHE_ALIGN(XPC_MSG_PAYLOAD_OFFSET + (_payload_size))
-
/*
* Define the return values and values passed to user's callout functions.
* (It is important to add new value codes at the end just preceding
@@ -270,7 +258,6 @@ enum xpc_retval {
xpcUnknownReason /* 116: unknown reason -- must be last in list */
};
-
/*
* Define the callout function types used by XPC to update the user on
* connection activity and state changes (via the user function registered by
@@ -375,12 +362,11 @@ enum xpc_retval {
* =====================+================================+=====================
*/
-typedef void (*xpc_channel_func)(enum xpc_retval reason, partid_t partid,
- int ch_number, void *data, void *key);
-
-typedef void (*xpc_notify_func)(enum xpc_retval reason, partid_t partid,
- int ch_number, void *key);
+typedef void (*xpc_channel_func) (enum xpc_retval reason, partid_t partid,
+ int ch_number, void *data, void *key);
+typedef void (*xpc_notify_func) (enum xpc_retval reason, partid_t partid,
+ int ch_number, void *key);
/*
* The following is a registration entry. There is a global array of these,
@@ -398,50 +384,45 @@ typedef void (*xpc_notify_func)(enum xpc_retval reason, partid_t partid,
*/
struct xpc_registration {
struct mutex mutex;
- xpc_channel_func func; /* function to call */
- void *key; /* pointer to user's key */
- u16 nentries; /* #of msg entries in local msg queue */
- u16 msg_size; /* message queue's message size */
- u32 assigned_limit; /* limit on #of assigned kthreads */
- u32 idle_limit; /* limit on #of idle kthreads */
+ xpc_channel_func func; /* function to call */
+ void *key; /* pointer to user's key */
+ u16 nentries; /* #of msg entries in local msg queue */
+ u16 msg_size; /* message queue's message size */
+ u32 assigned_limit; /* limit on #of assigned kthreads */
+ u32 idle_limit; /* limit on #of idle kthreads */
} ____cacheline_aligned;
-
#define XPC_CHANNEL_REGISTERED(_c) (xpc_registrations[_c].func != NULL)
-
/* the following are valid xpc_allocate() flags */
-#define XPC_WAIT 0 /* wait flag */
-#define XPC_NOWAIT 1 /* no wait flag */
-
+#define XPC_WAIT 0 /* wait flag */
+#define XPC_NOWAIT 1 /* no wait flag */
struct xpc_interface {
- void (*connect)(int);
- void (*disconnect)(int);
- enum xpc_retval (*allocate)(partid_t, int, u32, void **);
- enum xpc_retval (*send)(partid_t, int, void *);
- enum xpc_retval (*send_notify)(partid_t, int, void *,
- xpc_notify_func, void *);
- void (*received)(partid_t, int, void *);
- enum xpc_retval (*partid_to_nasids)(partid_t, void *);
+ void (*connect) (int);
+ void (*disconnect) (int);
+ enum xpc_retval (*allocate) (partid_t, int, u32, void **);
+ enum xpc_retval (*send) (partid_t, int, void *);
+ enum xpc_retval (*send_notify) (partid_t, int, void *,
+ xpc_notify_func, void *);
+ void (*received) (partid_t, int, void *);
+ enum xpc_retval (*partid_to_nasids) (partid_t, void *);
};
-
extern struct xpc_interface xpc_interface;
extern void xpc_set_interface(void (*)(int),
- void (*)(int),
- enum xpc_retval (*)(partid_t, int, u32, void **),
- enum xpc_retval (*)(partid_t, int, void *),
- enum xpc_retval (*)(partid_t, int, void *, xpc_notify_func,
- void *),
- void (*)(partid_t, int, void *),
- enum xpc_retval (*)(partid_t, void *));
+ void (*)(int),
+ enum xpc_retval (*)(partid_t, int, u32, void **),
+ enum xpc_retval (*)(partid_t, int, void *),
+ enum xpc_retval (*)(partid_t, int, void *,
+ xpc_notify_func, void *),
+ void (*)(partid_t, int, void *),
+ enum xpc_retval (*)(partid_t, void *));
extern void xpc_clear_interface(void);
-
extern enum xpc_retval xpc_connect(int, xpc_channel_func, void *, u16,
- u16, u32, u32);
+ u16, u32, u32);
extern void xpc_disconnect(int);
static inline enum xpc_retval
@@ -458,7 +439,7 @@ xpc_send(partid_t partid, int ch_number, void *payload)
static inline enum xpc_retval
xpc_send_notify(partid_t partid, int ch_number, void *payload,
- xpc_notify_func func, void *key)
+ xpc_notify_func func, void *key)
{
return xpc_interface.send_notify(partid, ch_number, payload, func, key);
}
@@ -475,11 +456,8 @@ xpc_partid_to_nasids(partid_t partid, void *nasids)
return xpc_interface.partid_to_nasids(partid, nasids);
}
-
extern u64 xp_nofault_PIOR_target;
extern int xp_nofault_PIOR(void *);
extern int xp_error_PIOR(void);
-
#endif /* _DRIVERS_MISC_SGIXP_XP_H */
-
diff --git a/drivers/misc/sgi-xp/xp_main.c b/drivers/misc/sgi-xp/xp_main.c
index 5f9f9c2e929..bb9257642fc 100644
--- a/drivers/misc/sgi-xp/xp_main.c
+++ b/drivers/misc/sgi-xp/xp_main.c
@@ -6,7 +6,6 @@
* Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved.
*/
-
/*
* Cross Partition (XP) base.
*
@@ -15,7 +14,6 @@
*
*/
-
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/module.h>
@@ -24,49 +22,49 @@
#include <asm/sn/sn_sal.h>
#include "xp.h"
-
/*
* Target of nofault PIO read.
*/
u64 xp_nofault_PIOR_target;
-
/*
* xpc_registrations[] keeps track of xpc_connect()'s done by the kernel-level
* users of XPC.
*/
struct xpc_registration xpc_registrations[XPC_NCHANNELS];
-
/*
* Initialize the XPC interface to indicate that XPC isn't loaded.
*/
-static enum xpc_retval xpc_notloaded(void) { return xpcNotLoaded; }
+static enum xpc_retval
+xpc_notloaded(void)
+{
+ return xpcNotLoaded;
+}
struct xpc_interface xpc_interface = {
- (void (*)(int)) xpc_notloaded,
- (void (*)(int)) xpc_notloaded,
- (enum xpc_retval (*)(partid_t, int, u32, void **)) xpc_notloaded,
- (enum xpc_retval (*)(partid_t, int, void *)) xpc_notloaded,
- (enum xpc_retval (*)(partid_t, int, void *, xpc_notify_func, void *))
- xpc_notloaded,
- (void (*)(partid_t, int, void *)) xpc_notloaded,
- (enum xpc_retval (*)(partid_t, void *)) xpc_notloaded
+ (void (*)(int))xpc_notloaded,
+ (void (*)(int))xpc_notloaded,
+ (enum xpc_retval(*)(partid_t, int, u32, void **))xpc_notloaded,
+ (enum xpc_retval(*)(partid_t, int, void *))xpc_notloaded,
+ (enum xpc_retval(*)(partid_t, int, void *, xpc_notify_func, void *))
+ xpc_notloaded,
+ (void (*)(partid_t, int, void *))xpc_notloaded,
+ (enum xpc_retval(*)(partid_t, void *))xpc_notloaded
};
-
/*
* XPC calls this when it (the XPC module) has been loaded.
*/
void
-xpc_set_interface(void (*connect)(int),
- void (*disconnect)(int),
- enum xpc_retval (*allocate)(partid_t, int, u32, void **),
- enum xpc_retval (*send)(partid_t, int, void *),
- enum xpc_retval (*send_notify)(partid_t, int, void *,
- xpc_notify_func, void *),
- void (*received)(partid_t, int, void *),
- enum xpc_retval (*partid_to_nasids)(partid_t, void *))
+xpc_set_interface(void (*connect) (int),
+ void (*disconnect) (int),
+ enum xpc_retval (*allocate) (partid_t, int, u32, void **),
+ enum xpc_retval (*send) (partid_t, int, void *),
+ enum xpc_retval (*send_notify) (partid_t, int, void *,
+ xpc_notify_func, void *),
+ void (*received) (partid_t, int, void *),
+ enum xpc_retval (*partid_to_nasids) (partid_t, void *))
{
xpc_interface.connect = connect;
xpc_interface.disconnect = disconnect;
@@ -77,28 +75,27 @@ xpc_set_interface(void (*connect)(int),
xpc_interface.partid_to_nasids = partid_to_nasids;
}
-
/*
* XPC calls this when it (the XPC module) is being unloaded.
*/
void
xpc_clear_interface(void)
{
- xpc_interface.connect = (void (*)(int)) xpc_notloaded;
- xpc_interface.disconnect = (void (*)(int)) xpc_notloaded;
- xpc_interface.allocate = (enum xpc_retval (*)(partid_t, int, u32,
- void **)) xpc_notloaded;
- xpc_interface.send = (enum xpc_retval (*)(partid_t, int, void *))
- xpc_notloaded;
- xpc_interface.send_notify = (enum xpc_retval (*)(partid_t, int, void *,
- xpc_notify_func, void *)) xpc_notloaded;
+ xpc_interface.connect = (void (*)(int))xpc_notloaded;
+ xpc_interface.disconnect = (void (*)(int))xpc_notloaded;
+ xpc_interface.allocate = (enum xpc_retval(*)(partid_t, int, u32,
+ void **))xpc_notloaded;
+ xpc_interface.send = (enum xpc_retval(*)(partid_t, int, void *))
+ xpc_notloaded;
+ xpc_interface.send_notify = (enum xpc_retval(*)(partid_t, int, void *,
+ xpc_notify_func,
+ void *))xpc_notloaded;
xpc_interface.received = (void (*)(partid_t, int, void *))
- xpc_notloaded;
- xpc_interface.partid_to_nasids = (enum xpc_retval (*)(partid_t, void *))
- xpc_notloaded;
+ xpc_notloaded;
+ xpc_interface.partid_to_nasids = (enum xpc_retval(*)(partid_t, void *))
+ xpc_notloaded;
}
-
/*
* Register for automatic establishment of a channel connection whenever
* a partition comes up.
@@ -125,11 +122,10 @@ xpc_clear_interface(void)
*/
enum xpc_retval
xpc_connect(int ch_number, xpc_channel_func func, void *key, u16 payload_size,
- u16 nentries, u32 assigned_limit, u32 idle_limit)
+ u16 nentries, u32 assigned_limit, u32 idle_limit)
{
struct xpc_registration *registration;
-
DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
DBUG_ON(payload_size == 0 || nentries == 0);
DBUG_ON(func == NULL);
@@ -162,7 +158,6 @@ xpc_connect(int ch_number, xpc_channel_func func, void *key, u16 payload_size,
return xpcSuccess;
}
-
/*
* Remove the registration for automatic connection of the specified channel
* when a partition comes up.
@@ -181,7 +176,6 @@ xpc_disconnect(int ch_number)
{
struct xpc_registration *registration;
-
DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
registration = &xpc_registrations[ch_number];
@@ -214,14 +208,12 @@ xpc_disconnect(int ch_number)
return;
}
-
int __init
xp_init(void)
{
int ret, ch_number;
- u64 func_addr = *(u64 *) xp_nofault_PIOR;
- u64 err_func_addr = *(u64 *) xp_error_PIOR;
-
+ u64 func_addr = *(u64 *)xp_nofault_PIOR;
+ u64 err_func_addr = *(u64 *)xp_error_PIOR;
if (!ia64_platform_is("sn2")) {
return -ENODEV;
@@ -237,9 +229,9 @@ xp_init(void)
* work around).
*/
if ((ret = sn_register_nofault_code(func_addr, err_func_addr,
- err_func_addr, 1, 1)) != 0) {
+ err_func_addr, 1, 1)) != 0) {
printk(KERN_ERR "XP: can't register nofault code, error=%d\n",
- ret);
+ ret);
}
/*
* Setup the nofault PIO read target. (There is no special reason why
@@ -258,22 +250,21 @@ xp_init(void)
return 0;
}
-module_init(xp_init);
+module_init(xp_init);
void __exit
xp_exit(void)
{
- u64 func_addr = *(u64 *) xp_nofault_PIOR;
- u64 err_func_addr = *(u64 *) xp_error_PIOR;
-
+ u64 func_addr = *(u64 *)xp_nofault_PIOR;
+ u64 err_func_addr = *(u64 *)xp_error_PIOR;
/* unregister the PIO read nofault code region */
- (void) sn_register_nofault_code(func_addr, err_func_addr,
- err_func_addr, 1, 0);
+ (void)sn_register_nofault_code(func_addr, err_func_addr,
+ err_func_addr, 1, 0);
}
-module_exit(xp_exit);
+module_exit(xp_exit);
MODULE_AUTHOR("Silicon Graphics, Inc.");
MODULE_DESCRIPTION("Cross Partition (XP) base");
@@ -287,4 +278,3 @@ EXPORT_SYMBOL(xpc_clear_interface);
EXPORT_SYMBOL(xpc_set_interface);
EXPORT_SYMBOL(xpc_connect);
EXPORT_SYMBOL(xpc_disconnect);
-
diff --git a/drivers/misc/sgi-xp/xp_nofault.S b/drivers/misc/sgi-xp/xp_nofault.S
index c13a709c4db..e38d4331942 100644
--- a/drivers/misc/sgi-xp/xp_nofault.S
+++ b/drivers/misc/sgi-xp/xp_nofault.S
@@ -6,7 +6,6 @@
* Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved.
*/
-
/*
* The xp_nofault_PIOR function takes a pointer to a remote PIO register
* and attempts to load and consume a value from it. This function
diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h
index 14e70ee53eb..64368bb8889 100644
--- a/drivers/misc/sgi-xp/xpc.h
+++ b/drivers/misc/sgi-xp/xpc.h
@@ -6,7 +6,6 @@
* Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved.
*/
-
/*
* Cross Partition Communication (XPC) structures and macros.
*/
@@ -14,7 +13,6 @@
#ifndef _DRIVERS_MISC_SGIXP_XPC_H
#define _DRIVERS_MISC_SGIXP_XPC_H
-
#include <linux/interrupt.h>
#include <linux/sysctl.h>
#include <linux/device.h>
@@ -29,7 +27,6 @@
#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
@@ -39,7 +36,6 @@
#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
@@ -67,7 +63,6 @@
/* define the process name of the discovery thread */
#define XPC_DISCOVERY_THREAD_NAME "xpc_discovery"
-
/*
* the reserved page
*
@@ -121,7 +116,7 @@ struct xpc_rsvd_page {
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))
@@ -138,14 +133,12 @@ xpc_compare_stamps(struct timespec *stamp1, struct timespec *stamp2)
{
int ret;
-
if ((ret = stamp1->tv_sec - stamp2->tv_sec) == 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)
@@ -172,12 +165,11 @@ struct xpc_vars {
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))
-
static inline int
xpc_hb_allowed(partid_t partid, struct xpc_vars *vars)
{
@@ -193,7 +185,7 @@ xpc_allow_hb(partid_t partid, struct xpc_vars *vars)
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
@@ -205,10 +197,9 @@ xpc_disallow_hb(partid_t partid, struct xpc_vars *vars)
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.
@@ -222,7 +213,6 @@ xpc_disallow_hb(partid_t partid, struct xpc_vars *vars)
#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.
*
@@ -257,9 +247,8 @@ struct xpc_vars_part {
* 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 */
@@ -271,7 +260,6 @@ struct xpc_vars_part {
#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
* allow for a single 64-bit argument. The following macros can be used to
@@ -285,8 +273,6 @@ struct xpc_vars_part {
#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.
*/
@@ -298,8 +284,6 @@ struct xpc_gp {
#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.
@@ -315,20 +299,15 @@ struct xpc_openclose_args {
#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.
*
@@ -336,19 +315,17 @@ struct xpc_openclose_args {
* and consumed by the intended recipient.
*/
struct xpc_notify {
- volatile u8 type; /* type of notification */
+ volatile 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.
@@ -428,48 +405,48 @@ struct xpc_notify {
* messages.
*/
struct xpc_channel {
- partid_t partid; /* ID of remote partition connected */
- spinlock_t lock; /* lock for updating this structure */
- u32 flags; /* general flags */
+ partid_t 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 xpc_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 */
+ struct xpc_openclose_args *local_openclose_args; /* args passed on */
+ /* opening or closing of channel */
/* various flavors of local and remote Get/Put values */
@@ -477,7 +454,7 @@ struct xpc_channel {
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 */
@@ -485,48 +462,45 @@ struct xpc_channel {
// >>> 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 */
+ 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_SETUP 0x00000020 /* channel's msgqueues are alloc'd */
+#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 */
+ 0x00010000 /* disconnecting callout initiated */
#define XPC_C_DISCONNECTINGCALLOUT_MADE \
- 0x00020000 /* disconnecting callout completed */
-#define XPC_C_WDISCONNECT 0x00040000 /* waiting for channel disconnect */
-
-
+ 0x00020000 /* disconnecting callout completed */
+#define XPC_C_WDISCONNECT 0x00040000 /* waiting for channel disconnect */
/*
* Manages channels on a partition basis. There is one of these structures
@@ -537,33 +511,31 @@ struct xpc_partition {
/* 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 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 */
struct timer_list disengage_request_timer;
-
/* XPC infrastructure referencing and teardown control */
volatile 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
@@ -572,53 +544,48 @@ struct xpc_partition {
* '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 */
- struct xpc_openclose_args *remote_openclose_args; /* copy of remote's */
- /* args */
- u64 remote_openclose_args_pa; /* phys addr of remote's args */
-
+ 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 */
/* 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 */
+ 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 */
+ 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 */
@@ -627,11 +594,9 @@ struct xpc_partition {
#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 */
@@ -639,8 +604,6 @@ struct xpc_partition {
#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
@@ -648,22 +611,17 @@ struct xpc_partition {
*/
#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]))
-
-
/* 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;
@@ -676,7 +634,6 @@ 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_partition.c */
extern int xpc_exiting;<