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[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>
This commit is contained in:
Dean Nelson 2008-04-22 14:48:01 -05:00 committed by Tony Luck
parent 45d9ca492e
commit 4a3ad2ddc0
5 changed files with 394 additions and 551 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

80
drivers/misc/sgi-xp/xp.h
View File

@ -6,30 +6,25 @@
* Copyright (C) 2004-2008 Silicon Graphics, Inc. All rights reserved. * Copyright (C) 2004-2008 Silicon Graphics, Inc. All rights reserved.
*/ */
/* /*
* External Cross Partition (XP) structures and defines. * External Cross Partition (XP) structures and defines.
*/ */
#ifndef _DRIVERS_MISC_SGIXP_XP_H #ifndef _DRIVERS_MISC_SGIXP_XP_H
#define _DRIVERS_MISC_SGIXP_XP_H #define _DRIVERS_MISC_SGIXP_XP_H
#include <linux/cache.h> #include <linux/cache.h>
#include <linux/hardirq.h> #include <linux/hardirq.h>
#include <linux/mutex.h> #include <linux/mutex.h>
#include <asm/sn/types.h> #include <asm/sn/types.h>
#include <asm/sn/bte.h> #include <asm/sn/bte.h>
#ifdef USE_DBUG_ON #ifdef USE_DBUG_ON
#define DBUG_ON(condition) BUG_ON(condition) #define DBUG_ON(condition) BUG_ON(condition)
#else #else
#define DBUG_ON(condition) #define DBUG_ON(condition)
#endif #endif
/* /*
* Define the maximum number of logically defined partitions the system * Define the maximum number of logically defined partitions the system
* can support. It is constrained by the maximum number of hardware * can support. It is constrained by the maximum number of hardware
@ -43,7 +38,6 @@
*/ */
#define XP_MAX_PARTITIONS 64 #define XP_MAX_PARTITIONS 64
/* /*
* Define the number of u64s required to represent all the C-brick nasids * Define the number of u64s required to represent all the C-brick nasids
* as a bitmap. The cross-partition kernel modules deal only with * 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_BYTES ((XP_MAX_PHYSNODE_ID + 7) / 8)
#define XP_NASID_MASK_WORDS ((XP_MAX_PHYSNODE_ID + 63) / 64) #define XP_NASID_MASK_WORDS ((XP_MAX_PHYSNODE_ID + 63) / 64)
/* /*
* Wrapper for bte_copy() that should it return a failure status will retry * 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 * 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; bte_result_t ret;
u64 pdst = ia64_tpa(vdst); u64 pdst = ia64_tpa(vdst);
/* /*
* Ensure that the physically mapped memory is contiguous. * 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; return ret;
} }
/* /*
* XPC establishes channel connections between the local partition and any * XPC establishes channel connections between the local partition and any
* other partition that is currently up. Over these channels, kernel-level * 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. #error XPC_NCHANNELS exceeds MAXIMUM allowed.
#endif #endif
/* /*
* The format of an XPC message is as follows: * The format of an XPC message is as follows:
* *
@ -160,12 +150,10 @@ struct xpc_msg {
u64 payload; /* user defined portion of message */ u64 payload; /* user defined portion of message */
}; };
#define XPC_MSG_PAYLOAD_OFFSET (u64) (&((struct xpc_msg *)0)->payload) #define XPC_MSG_PAYLOAD_OFFSET (u64) (&((struct xpc_msg *)0)->payload)
#define XPC_MSG_SIZE(_payload_size) \ #define XPC_MSG_SIZE(_payload_size) \
L1_CACHE_ALIGN(XPC_MSG_PAYLOAD_OFFSET + (_payload_size)) L1_CACHE_ALIGN(XPC_MSG_PAYLOAD_OFFSET + (_payload_size))
/* /*
* Define the return values and values passed to user's callout functions. * 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 * (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 */ xpcUnknownReason /* 116: unknown reason -- must be last in list */
}; };
/* /*
* Define the callout function types used by XPC to update the user on * Define the callout function types used by XPC to update the user on
* connection activity and state changes (via the user function registered by * 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, typedef void (*xpc_channel_func) (enum xpc_retval reason, partid_t partid,
int ch_number, void *data, void *key); 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_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, * 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 xpc_registration {
struct mutex mutex; struct mutex mutex;
xpc_channel_func func; /* function to call */ xpc_channel_func func; /* function to call */
void *key; /* pointer to user's key */ void *key; /* pointer to user's key */
u16 nentries; /* #of msg entries in local msg queue */ u16 nentries; /* #of msg entries in local msg queue */
u16 msg_size; /* message queue's message size */ u16 msg_size; /* message queue's message size */
u32 assigned_limit; /* limit on #of assigned kthreads */ u32 assigned_limit; /* limit on #of assigned kthreads */
u32 idle_limit; /* limit on #of idle kthreads */ u32 idle_limit; /* limit on #of idle kthreads */
} ____cacheline_aligned; } ____cacheline_aligned;
#define XPC_CHANNEL_REGISTERED(_c) (xpc_registrations[_c].func != NULL) #define XPC_CHANNEL_REGISTERED(_c) (xpc_registrations[_c].func != NULL)
/* the following are valid xpc_allocate() flags */ /* the following are valid xpc_allocate() flags */
#define XPC_WAIT 0 /* wait flag */ #define XPC_WAIT 0 /* wait flag */
#define XPC_NOWAIT 1 /* no wait flag */ #define XPC_NOWAIT 1 /* no wait flag */
struct xpc_interface { struct xpc_interface {
void (*connect)(int); void (*connect) (int);
void (*disconnect)(int); void (*disconnect) (int);
enum xpc_retval (*allocate)(partid_t, int, u32, void **); enum xpc_retval (*allocate) (partid_t, int, u32, void **);
enum xpc_retval (*send)(partid_t, int, void *); enum xpc_retval (*send) (partid_t, int, void *);
enum xpc_retval (*send_notify)(partid_t, int, void *, enum xpc_retval (*send_notify) (partid_t, int, void *,
xpc_notify_func, void *); xpc_notify_func, void *);
void (*received)(partid_t, int, void *); void (*received) (partid_t, int, void *);
enum xpc_retval (*partid_to_nasids)(partid_t, void *); enum xpc_retval (*partid_to_nasids) (partid_t, void *);
}; };
extern struct xpc_interface xpc_interface; extern struct xpc_interface xpc_interface;
extern void xpc_set_interface(void (*)(int), extern void xpc_set_interface(void (*)(int),
void (*)(int), void (*)(int),
enum xpc_retval (*)(partid_t, int, u32, void **), enum xpc_retval (*)(partid_t, int, u32, void **),
enum xpc_retval (*)(partid_t, int, void *), enum xpc_retval (*)(partid_t, int, void *),
enum xpc_retval (*)(partid_t, int, void *, xpc_notify_func, enum xpc_retval (*)(partid_t, int, void *,
void *), xpc_notify_func, void *),
void (*)(partid_t, int, void *), void (*)(partid_t, int, void *),
enum xpc_retval (*)(partid_t, void *)); enum xpc_retval (*)(partid_t, void *));
extern void xpc_clear_interface(void); extern void xpc_clear_interface(void);
extern enum xpc_retval xpc_connect(int, xpc_channel_func, void *, u16, extern enum xpc_retval xpc_connect(int, xpc_channel_func, void *, u16,
u16, u32, u32); u16, u32, u32);
extern void xpc_disconnect(int); extern void xpc_disconnect(int);
static inline enum xpc_retval static inline enum xpc_retval
@ -458,7 +439,7 @@ xpc_send(partid_t partid, int ch_number, void *payload)
static inline enum xpc_retval static inline enum xpc_retval
xpc_send_notify(partid_t partid, int ch_number, void *payload, 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); 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); return xpc_interface.partid_to_nasids(partid, nasids);
} }
extern u64 xp_nofault_PIOR_target; extern u64 xp_nofault_PIOR_target;
extern int xp_nofault_PIOR(void *); extern int xp_nofault_PIOR(void *);
extern int xp_error_PIOR(void); extern int xp_error_PIOR(void);
#endif /* _DRIVERS_MISC_SGIXP_XP_H */ #endif /* _DRIVERS_MISC_SGIXP_XP_H */

98
drivers/misc/sgi-xp/xp_main.c
View File

@ -6,7 +6,6 @@
* Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved. * Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved.
*/ */
/* /*
* Cross Partition (XP) base. * Cross Partition (XP) base.
* *
@ -15,7 +14,6 @@
* *
*/ */
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/module.h> #include <linux/module.h>
@ -24,49 +22,49 @@
#include <asm/sn/sn_sal.h> #include <asm/sn/sn_sal.h>
#include "xp.h" #include "xp.h"
/* /*
* Target of nofault PIO read. * Target of nofault PIO read.
*/ */
u64 xp_nofault_PIOR_target; u64 xp_nofault_PIOR_target;
/* /*
* xpc_registrations[] keeps track of xpc_connect()'s done by the kernel-level * xpc_registrations[] keeps track of xpc_connect()'s done by the kernel-level
* users of XPC. * users of XPC.
*/ */
struct xpc_registration xpc_registrations[XPC_NCHANNELS]; struct xpc_registration xpc_registrations[XPC_NCHANNELS];
/* /*
* Initialize the XPC interface to indicate that XPC isn't loaded. * 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 = { struct xpc_interface xpc_interface = {
(void (*)(int)) xpc_notloaded, (void (*)(int))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, u32, void **))xpc_notloaded,
(enum xpc_retval (*)(partid_t, int, void *)) xpc_notloaded, (enum xpc_retval(*)(partid_t, int, void *))xpc_notloaded,
(enum xpc_retval (*)(partid_t, int, void *, xpc_notify_func, void *)) (enum xpc_retval(*)(partid_t, int, void *, xpc_notify_func, void *))
xpc_notloaded, xpc_notloaded,
(void (*)(partid_t, int, void *)) xpc_notloaded, (void (*)(partid_t, int, void *))xpc_notloaded,
(enum xpc_retval (*)(partid_t, void *)) xpc_notloaded (enum xpc_retval(*)(partid_t, void *))xpc_notloaded
}; };
/* /*
* XPC calls this when it (the XPC module) has been loaded. * XPC calls this when it (the XPC module) has been loaded.
*/ */
void void
xpc_set_interface(void (*connect)(int), xpc_set_interface(void (*connect) (int),
void (*disconnect)(int), void (*disconnect) (int),
enum xpc_retval (*allocate)(partid_t, int, u32, void **), enum xpc_retval (*allocate) (partid_t, int, u32, void **),
enum xpc_retval (*send)(partid_t, int, void *), enum xpc_retval (*send) (partid_t, int, void *),
enum xpc_retval (*send_notify)(partid_t, int, void *, enum xpc_retval (*send_notify) (partid_t, int, void *,
xpc_notify_func, void *), xpc_notify_func, void *),
void (*received)(partid_t, int, void *), void (*received) (partid_t, int, void *),
enum xpc_retval (*partid_to_nasids)(partid_t, void *)) enum xpc_retval (*partid_to_nasids) (partid_t, void *))
{ {
xpc_interface.connect = connect; xpc_interface.connect = connect;
xpc_interface.disconnect = disconnect; xpc_interface.disconnect = disconnect;
@ -77,28 +75,27 @@ xpc_set_interface(void (*connect)(int),
xpc_interface.partid_to_nasids = partid_to_nasids; xpc_interface.partid_to_nasids = partid_to_nasids;
} }
/* /*
* XPC calls this when it (the XPC module) is being unloaded. * XPC calls this when it (the XPC module) is being unloaded.
*/ */
void void
xpc_clear_interface(void) xpc_clear_interface(void)
{ {
xpc_interface.connect = (void (*)(int)) xpc_notloaded; xpc_interface.connect = (void (*)(int))xpc_notloaded;
xpc_interface.disconnect = (void (*)(int)) xpc_notloaded; xpc_interface.disconnect = (void (*)(int))xpc_notloaded;
xpc_interface.allocate = (enum xpc_retval (*)(partid_t, int, u32, xpc_interface.allocate = (enum xpc_retval(*)(partid_t, int, u32,
void **)) xpc_notloaded; void **))xpc_notloaded;
xpc_interface.send = (enum xpc_retval (*)(partid_t, int, void *)) xpc_interface.send = (enum xpc_retval(*)(partid_t, int, void *))
xpc_notloaded; xpc_notloaded;
xpc_interface.send_notify = (enum xpc_retval (*)(partid_t, int, void *, xpc_interface.send_notify = (enum xpc_retval(*)(partid_t, int, void *,
xpc_notify_func, void *)) xpc_notloaded; xpc_notify_func,
void *))xpc_notloaded;
xpc_interface.received = (void (*)(partid_t, int, void *)) xpc_interface.received = (void (*)(partid_t, int, void *))
xpc_notloaded; xpc_notloaded;
xpc_interface.partid_to_nasids = (enum xpc_retval (*)(partid_t, void *)) xpc_interface.partid_to_nasids = (enum xpc_retval(*)(partid_t, void *))
xpc_notloaded; xpc_notloaded;
} }
/* /*
* Register for automatic establishment of a channel connection whenever * Register for automatic establishment of a channel connection whenever
* a partition comes up. * a partition comes up.
@ -125,11 +122,10 @@ xpc_clear_interface(void)
*/ */
enum xpc_retval enum xpc_retval
xpc_connect(int ch_number, xpc_channel_func func, void *key, u16 payload_size, 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; struct xpc_registration *registration;
DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS); DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
DBUG_ON(payload_size == 0 || nentries == 0); DBUG_ON(payload_size == 0 || nentries == 0);
DBUG_ON(func == NULL); DBUG_ON(func == NULL);
@ -162,7 +158,6 @@ xpc_connect(int ch_number, xpc_channel_func func, void *key, u16 payload_size,
return xpcSuccess; return xpcSuccess;
} }
/* /*
* Remove the registration for automatic connection of the specified channel * Remove the registration for automatic connection of the specified channel
* when a partition comes up. * when a partition comes up.
@ -181,7 +176,6 @@ xpc_disconnect(int ch_number)
{ {
struct xpc_registration *registration; struct xpc_registration *registration;
DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS); DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
registration = &xpc_registrations[ch_number]; registration = &xpc_registrations[ch_number];
@ -214,14 +208,12 @@ xpc_disconnect(int ch_number)
return; return;
} }
int __init int __init
xp_init(void) xp_init(void)
{ {
int ret, ch_number; int ret, ch_number;
u64 func_addr = *(u64 *) xp_nofault_PIOR; u64 func_addr = *(u64 *)xp_nofault_PIOR;
u64 err_func_addr = *(u64 *) xp_error_PIOR; u64 err_func_addr = *(u64 *)xp_error_PIOR;
if (!ia64_platform_is("sn2")) { if (!ia64_platform_is("sn2")) {
return -ENODEV; return -ENODEV;
@ -237,9 +229,9 @@ xp_init(void)
* work around). * work around).
*/ */
if ((ret = sn_register_nofault_code(func_addr, err_func_addr, 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", 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 * Setup the nofault PIO read target. (There is no special reason why
@ -258,22 +250,21 @@ xp_init(void)
return 0; return 0;
} }
module_init(xp_init);
module_init(xp_init);
void __exit void __exit
xp_exit(void) xp_exit(void)
{ {
u64 func_addr = *(u64 *) xp_nofault_PIOR; u64 func_addr = *(u64 *)xp_nofault_PIOR;
u64 err_func_addr = *(u64 *) xp_error_PIOR; u64 err_func_addr = *(u64 *)xp_error_PIOR;
/* unregister the PIO read nofault code region */ /* unregister the PIO read nofault code region */
(void) sn_register_nofault_code(func_addr, err_func_addr, (void)sn_register_nofault_code(func_addr, err_func_addr,
err_func_addr, 1, 0); err_func_addr, 1, 0);
} }
module_exit(xp_exit);
module_exit(xp_exit);
MODULE_AUTHOR("Silicon Graphics, Inc."); MODULE_AUTHOR("Silicon Graphics, Inc.");
MODULE_DESCRIPTION("Cross Partition (XP) base"); MODULE_DESCRIPTION("Cross Partition (XP) base");
@ -287,4 +278,3 @@ EXPORT_SYMBOL(xpc_clear_interface);
EXPORT_SYMBOL(xpc_set_interface); EXPORT_SYMBOL(xpc_set_interface);
EXPORT_SYMBOL(xpc_connect); EXPORT_SYMBOL(xpc_connect);
EXPORT_SYMBOL(xpc_disconnect); EXPORT_SYMBOL(xpc_disconnect);

1
drivers/misc/sgi-xp/xp_nofault.S
View File

@ -6,7 +6,6 @@
* Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved. * Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved.
*/ */
/* /*
* The xp_nofault_PIOR function takes a pointer to a remote PIO register * 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 * and attempts to load and consume a value from it. This function

438
drivers/misc/sgi-xp/xpc.h
View File

File diff suppressed because it is too large Load Diff

328
drivers/misc/sgi-xp/xpc_partition.c
View File

@ -6,7 +6,6 @@
* Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved. * Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved.
*/ */
/* /*
* Cross Partition Communication (XPC) partition support. * Cross Partition Communication (XPC) partition support.
* *
@ -16,7 +15,6 @@
* *
*/ */
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/sysctl.h> #include <linux/sysctl.h>
#include <linux/cache.h> #include <linux/cache.h>
@ -30,11 +28,9 @@
#include <asm/sn/addrs.h> #include <asm/sn/addrs.h>
#include "xpc.h" #include "xpc.h"
/* XPC is exiting flag */ /* XPC is exiting flag */
int xpc_exiting; int xpc_exiting;
/* SH_IPI_ACCESS shub register value on startup */ /* SH_IPI_ACCESS shub register value on startup */
static u64 xpc_sh1_IPI_access; static u64 xpc_sh1_IPI_access;
static u64 xpc_sh2_IPI_access0; static u64 xpc_sh2_IPI_access0;
@ -42,11 +38,9 @@ static u64 xpc_sh2_IPI_access1;
static u64 xpc_sh2_IPI_access2; static u64 xpc_sh2_IPI_access2;
static u64 xpc_sh2_IPI_access3; static u64 xpc_sh2_IPI_access3;
/* original protection values for each node */ /* original protection values for each node */
u64 xpc_prot_vec[MAX_NUMNODES]; u64 xpc_prot_vec[MAX_NUMNODES];
/* this partition's reserved page pointers */ /* this partition's reserved page pointers */
struct xpc_rsvd_page *xpc_rsvd_page; struct xpc_rsvd_page *xpc_rsvd_page;
static u64 *xpc_part_nasids; static u64 *xpc_part_nasids;
@ -57,7 +51,6 @@ struct xpc_vars_part *xpc_vars_part;
static int xp_nasid_mask_bytes; /* actual size in bytes of nasid mask */ static int xp_nasid_mask_bytes; /* actual size in bytes of nasid mask */
static int xp_nasid_mask_words; /* actual size in words of nasid mask */ static int xp_nasid_mask_words; /* actual size in words of nasid mask */
/* /*
* For performance reasons, each entry of xpc_partitions[] is cacheline * For performance reasons, each entry of xpc_partitions[] is cacheline
* aligned. And xpc_partitions[] is padded with an additional entry at the * aligned. And xpc_partitions[] is padded with an additional entry at the
@ -66,7 +59,6 @@ static int xp_nasid_mask_words; /* actual size in words of nasid mask */
*/ */
struct xpc_partition xpc_partitions[XP_MAX_PARTITIONS + 1]; struct xpc_partition xpc_partitions[XP_MAX_PARTITIONS + 1];
/* /*
* Generic buffer used to store a local copy of portions of a remote * Generic buffer used to store a local copy of portions of a remote
* partition's reserved page (either its header and part_nasids mask, * partition's reserved page (either its header and part_nasids mask,
@ -75,7 +67,6 @@ struct xpc_partition xpc_partitions[XP_MAX_PARTITIONS + 1];
char *xpc_remote_copy_buffer; char *xpc_remote_copy_buffer;
void *xpc_remote_copy_buffer_base; void *xpc_remote_copy_buffer_base;
/* /*
* Guarantee that the kmalloc'd memory is cacheline aligned. * Guarantee that the kmalloc'd memory is cacheline aligned.
*/ */
@ -87,7 +78,7 @@ xpc_kmalloc_cacheline_aligned(size_t size, gfp_t flags, void **base)
if (*base == NULL) { if (*base == NULL) {
return NULL; return NULL;
} }
if ((u64) *base == L1_CACHE_ALIGN((u64) *base)) { if ((u64)*base == L1_CACHE_ALIGN((u64)*base)) {
return *base; return *base;
} }
kfree(*base); kfree(*base);
@ -97,10 +88,9 @@ xpc_kmalloc_cacheline_aligned(size_t size, gfp_t flags, void **base)
if (*base == NULL) { if (*base == NULL) {
return NULL; return NULL;
} }
return (void *) L1_CACHE_ALIGN((u64) *base); return (void *)L1_CACHE_ALIGN((u64)*base);
} }
/* /*
* Given a nasid, get the physical address of the partition's reserved page * Given a nasid, get the physical address of the partition's reserved page
* for that nasid. This function returns 0 on any error. * for that nasid. This function returns 0 on any error.
@ -117,11 +107,10 @@ xpc_get_rsvd_page_pa(int nasid)
u64 buf_len = 0; u64 buf_len = 0;
void *buf_base = NULL; void *buf_base = NULL;
while (1) { while (1) {
status = sn_partition_reserved_page_pa(buf, &cookie, &rp_pa, status = sn_partition_reserved_page_pa(buf, &cookie, &rp_pa,
&len); &len);
dev_dbg(xpc_part, "SAL returned with status=%li, cookie=" dev_dbg(xpc_part, "SAL returned with status=%li, cookie="
"0x%016lx, address=0x%016lx, len=0x%016lx\n", "0x%016lx, address=0x%016lx, len=0x%016lx\n",
@ -134,8 +123,9 @@ xpc_get_rsvd_page_pa(int nasid)
if (L1_CACHE_ALIGN(len) > buf_len) { if (L1_CACHE_ALIGN(len) > buf_len) {
kfree(buf_base); kfree(buf_base);
buf_len = L1_CACHE_ALIGN(len); buf_len = L1_CACHE_ALIGN(len);
buf = (u64) xpc_kmalloc_cacheline_aligned(buf_len, buf = (u64)xpc_kmalloc_cacheline_aligned(buf_len,
GFP_KERNEL, &buf_base); GFP_KERNEL,
&buf_base);
if (buf_base == NULL) { if (buf_base == NULL) {
dev_err(xpc_part, "unable to kmalloc " dev_err(xpc_part, "unable to kmalloc "
"len=0x%016lx\n", buf_len); "len=0x%016lx\n", buf_len);
@ -145,7 +135,7 @@ xpc_get_rsvd_page_pa(int nasid)
} }
bte_res = xp_bte_copy(rp_pa, buf, buf_len, bte_res = xp_bte_copy(rp_pa, buf, buf_len,
(BTE_NOTIFY | BTE_WACQUIRE), NULL); (BTE_NOTIFY | BTE_WACQUIRE), NULL);
if (bte_res != BTE_SUCCESS) { if (bte_res != BTE_SUCCESS) {
dev_dbg(xpc_part, "xp_bte_copy failed %i\n", bte_res); dev_dbg(xpc_part, "xp_bte_copy failed %i\n", bte_res);
status = SALRET_ERROR; status = SALRET_ERROR;
@ -162,7 +152,6 @@ xpc_get_rsvd_page_pa(int nasid)
return rp_pa; return rp_pa;
} }
/* /*
* Fill the partition reserved page with the information needed by * Fill the partition reserved page with the information needed by
* other partitions to discover we are alive and establish initial * other partitions to discover we are alive and establish initial
@ -176,7 +165,6 @@ xpc_rsvd_page_init(void)
u64 rp_pa, nasid_array = 0; u64 rp_pa, nasid_array = 0;
int i, ret; int i, ret;
/* get the local reserved page's address */ /* get the local reserved page's address */
preempt_disable(); preempt_disable();
@ -186,7 +174,7 @@ xpc_rsvd_page_init(void)
dev_err(xpc_part, "SAL failed to locate the reserved page\n"); dev_err(xpc_part, "SAL failed to locate the reserved page\n");
return NULL; return NULL;
} }
rp = (struct xpc_rsvd_page *) __va(rp_pa); rp = (struct xpc_rsvd_page *)__va(rp_pa);
if (rp->partid != sn_partition_id) { if (rp->partid != sn_partition_id) {
dev_err(xpc_part, "the reserved page's partid of %d should be " dev_err(xpc_part, "the reserved page's partid of %d should be "
@ -223,7 +211,7 @@ xpc_rsvd_page_init(void)
* memory protections are never restricted. * memory protections are never restricted.
*/ */
if ((amos_page = xpc_vars->amos_page) == NULL) { if ((amos_page = xpc_vars->amos_page) == NULL) {
amos_page = (AMO_t *) TO_AMO(uncached_alloc_page(0)); amos_page = (AMO_t *)TO_AMO(uncached_alloc_page(0));
if (amos_page == NULL) { if (amos_page == NULL) {
dev_err(xpc_part, "can't allocate page of AMOs\n"); dev_err(xpc_part, "can't allocate page of AMOs\n");
return NULL; return NULL;
@ -234,30 +222,31 @@ xpc_rsvd_page_init(void)
* when xpc_allow_IPI_ops() is called via xpc_hb_init(). * when xpc_allow_IPI_ops() is called via xpc_hb_init().
*/ */
if (!enable_shub_wars_1_1()) { if (!enable_shub_wars_1_1()) {
ret = sn_change_memprotect(ia64_tpa((u64) amos_page), ret = sn_change_memprotect(ia64_tpa((u64)amos_page),
PAGE_SIZE, SN_MEMPROT_ACCESS_CLASS_1, PAGE_SIZE,
&nasid_array); SN_MEMPROT_ACCESS_CLASS_1,
&nasid_array);
if (ret != 0) { if (ret != 0) {
dev_err(xpc_part, "can't change memory " dev_err(xpc_part, "can't change memory "
"protections\n"); "protections\n");
uncached_free_page(__IA64_UNCACHED_OFFSET | uncached_free_page(__IA64_UNCACHED_OFFSET |
TO_PHYS((u64) amos_page)); TO_PHYS((u64)amos_page));
return NULL; return NULL;
} }
} }
} else if (!IS_AMO_ADDRESS((u64) amos_page)) { } else if (!IS_AMO_ADDRESS((u64)amos_page)) {
/* /*
* EFI's XPBOOT can also set amos_page in the reserved page, * EFI's XPBOOT can also set amos_page in the reserved page,
* but it happens to leave it as an uncached physical address * but it happens to leave it as an uncached physical address
* and we need it to be an uncached virtual, so we'll have to * and we need it to be an uncached virtual, so we'll have to
* convert it. * convert it.
*/ */
if (!IS_AMO_PHYS_ADDRESS((u64) amos_page)) { if (!IS_AMO_PHYS_ADDRESS((u64)amos_page)) {
dev_err(xpc_part, "previously used amos_page address " dev_err(xpc_part, "previously used amos_page address "
"is bad = 0x%p\n", (void *) amos_page); "is bad = 0x%p\n", (void *)amos_page);
return NULL; return NULL;
} }
amos_page = (AMO_t *) TO_AMO((u64) amos_page); amos_page = (AMO_t *)TO_AMO((u64)amos_page);
} }
/* clear xpc_vars */ /* clear xpc_vars */
@ -267,22 +256,21 @@ xpc_rsvd_page_init(void)
xpc_vars->act_nasid = cpuid_to_nasid(0); xpc_vars->act_nasid = cpuid_to_nasid(0);
xpc_vars->act_phys_cpuid = cpu_physical_id(0); xpc_vars->act_phys_cpuid = cpu_physical_id(0);
xpc_vars->vars_part_pa = __pa(xpc_vars_part); xpc_vars->vars_part_pa = __pa(xpc_vars_part);
xpc_vars->amos_page_pa = ia64_tpa((u64) amos_page); xpc_vars->amos_page_pa = ia64_tpa((u64)amos_page);
xpc_vars->amos_page = amos_page; /* save for next load of XPC */ xpc_vars->amos_page = amos_page; /* save for next load of XPC */
/* clear xpc_vars_part */ /* clear xpc_vars_part */
memset((u64 *) xpc_vars_part, 0, sizeof(struct xpc_vars_part) * memset((u64 *)xpc_vars_part, 0, sizeof(struct xpc_vars_part) *
XP_MAX_PARTITIONS); XP_MAX_PARTITIONS);
/* initialize the activate IRQ related AMO variables */ /* initialize the activate IRQ related AMO variables */
for (i = 0; i < xp_nasid_mask_words; i++) { for (i = 0; i < xp_nasid_mask_words; i++) {
(void) xpc_IPI_init(XPC_ACTIVATE_IRQ_AMOS + i); (void)xpc_IPI_init(XPC_ACTIVATE_IRQ_AMOS + i);
} }
/* initialize the engaged remote partitions related AMO variables */ /* initialize the engaged remote partitions related AMO variables */
(void) xpc_IPI_init(XPC_ENGAGED_PARTITIONS_AMO); (void)xpc_IPI_init(XPC_ENGAGED_PARTITIONS_AMO);
(void) xpc_IPI_init(XPC_DISENGAGE_REQUEST_AMO); (void)xpc_IPI_init(XPC_DISENGAGE_REQUEST_AMO);
/* timestamp of when reserved page was setup by XPC */ /* timestamp of when reserved page was setup by XPC */
rp->stamp = CURRENT_TIME; rp->stamp = CURRENT_TIME;
@ -296,7 +284,6 @@ xpc_rsvd_page_init(void)
return rp; return rp;
} }
/* /*
* Change protections to allow IPI operations (and AMO operations on * Change protections to allow IPI operations (and AMO operations on
* Shub 1.1 systems). * Shub 1.1 systems).
@ -307,39 +294,38 @@ xpc_allow_IPI_ops(void)
int node; int node;
int nasid; int nasid;
// >>> Change SH_IPI_ACCESS code to use SAL call once it is available. // >>> Change SH_IPI_ACCESS code to use SAL call once it is available.
if (is_shub2()) { if (is_shub2()) {
xpc_sh2_IPI_access0 = xpc_sh2_IPI_access0 =
(u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS0)); (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS0));
xpc_sh2_IPI_access1 = xpc_sh2_IPI_access1 =
(u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS1)); (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS1));
xpc_sh2_IPI_access2 = xpc_sh2_IPI_access2 =
(u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS2)); (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS2));
xpc_sh2_IPI_access3 = xpc_sh2_IPI_access3 =
(u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS3)); (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS3));
for_each_online_node(node) { for_each_online_node(node) {
nasid = cnodeid_to_nasid(node); nasid = cnodeid_to_nasid(node);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0), HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0),
-1UL); -1UL);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1), HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1),
-1UL); -1UL);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2), HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2),
-1UL); -1UL);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3), HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3),
-1UL); -1UL);
} }
} else { } else {
xpc_sh1_IPI_access = xpc_sh1_IPI_access =
(u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH1_IPI_ACCESS)); (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH1_IPI_ACCESS));
for_each_online_node(node) { for_each_online_node(node) {
nasid = cnodeid_to_nasid(node); nasid = cnodeid_to_nasid(node);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS), HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS),
-1UL); -1UL);
/* /*
* Since the BIST collides with memory operations on * Since the BIST collides with memory operations on
@ -347,21 +333,23 @@ xpc_allow_IPI_ops(void)
*/ */
if (enable_shub_wars_1_1()) { if (enable_shub_wars_1_1()) {
/* open up everything */ /* open up everything */
xpc_prot_vec[node] = (u64) HUB_L((u64 *) xpc_prot_vec[node] = (u64)HUB_L((u64 *)
GLOBAL_MMR_ADDR(nasid, GLOBAL_MMR_ADDR
SH1_MD_DQLP_MMR_DIR_PRIVEC0)); (nasid,
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH1_MD_DQLP_MMR_DIR_PRIVEC0));
SH1_MD_DQLP_MMR_DIR_PRIVEC0), HUB_S((u64 *)
-1UL); GLOBAL_MMR_ADDR(nasid,
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH1_MD_DQLP_MMR_DIR_PRIVEC0),
SH1_MD_DQRP_MMR_DIR_PRIVEC0), -1UL);
-1UL); HUB_S((u64 *)
GLOBAL_MMR_ADDR(nasid,
SH1_MD_DQRP_MMR_DIR_PRIVEC0),
-1UL);
} }
} }
} }
} }
/* /*
* Restrict protections to disallow IPI operations (and AMO operations on * Restrict protections to disallow IPI operations (and AMO operations on
* Shub 1.1 systems). * Shub 1.1 systems).
@ -372,43 +360,41 @@ xpc_restrict_IPI_ops(void)
int node; int node;
int nasid; int nasid;
// >>> Change SH_IPI_ACCESS code to use SAL call once it is available. // >>> Change SH_IPI_ACCESS code to use SAL call once it is available.
if (is_shub2()) { if (is_shub2()) {
for_each_online_node(node) { for_each_online_node(node) {
nasid = cnodeid_to_nasid(node); nasid = cnodeid_to_nasid(node);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0), HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0),
xpc_sh2_IPI_access0); xpc_sh2_IPI_access0);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1), HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1),
xpc_sh2_IPI_access1); xpc_sh2_IPI_access1);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2), HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2),
xpc_sh2_IPI_access2); xpc_sh2_IPI_access2);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3), HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3),
xpc_sh2_IPI_access3); xpc_sh2_IPI_access3);
} }
} else { } else {
for_each_online_node(node) { for_each_online_node(node) {
nasid = cnodeid_to_nasid(node); nasid = cnodeid_to_nasid(node);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS), HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS),
xpc_sh1_IPI_access); xpc_sh1_IPI_access);
if (enable_shub_wars_1_1()) { if (enable_shub_wars_1_1()) {
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid,
SH1_MD_DQLP_MMR_DIR_PRIVEC0), SH1_MD_DQLP_MMR_DIR_PRIVEC0),
xpc_prot_vec[node]); xpc_prot_vec[node]);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid,
SH1_MD_DQRP_MMR_DIR_PRIVEC0), SH1_MD_DQRP_MMR_DIR_PRIVEC0),
xpc_prot_vec[node]); xpc_prot_vec[node]);
} }
} }
} }
} }
/* /*
* At periodic intervals, scan through all active partitions and ensure * At periodic intervals, scan through all active partitions and ensure
* their heartbeat is still active. If not, the partition is deactivated. * their heartbeat is still active. If not, the partition is deactivated.
@ -421,8 +407,7 @@ xpc_check_remote_hb(void)
partid_t partid; partid_t partid;
bte_result_t bres; bte_result_t bres;
remote_vars = (struct xpc_vars *)xpc_remote_copy_buffer;
remote_vars = (struct xpc_vars *) xpc_remote_copy_buffer;
for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) { for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) {
@ -437,18 +422,18 @@ xpc_check_remote_hb(void)
part = &xpc_partitions[partid]; part = &xpc_partitions[partid];
if (part->act_state == XPC_P_INACTIVE || if (part->act_state == XPC_P_INACTIVE ||
part->act_state == XPC_P_DEACTIVATING) { part->act_state == XPC_P_DEACTIVATING) {
continue; continue;
} }
/* pull the remote_hb cache line */ /* pull the remote_hb cache line */
bres = xp_bte_copy(part->remote_vars_pa, bres = xp_bte_copy(part->remote_vars_pa,
(u64) remote_vars, (u64)remote_vars,
XPC_RP_VARS_SIZE, XPC_RP_VARS_SIZE,
(BTE_NOTIFY | BTE_WACQUIRE), NULL); (BTE_NOTIFY | BTE_WACQUIRE), NULL);
if (bres != BTE_SUCCESS) { if (bres != BTE_SUCCESS) {
XPC_DEACTIVATE_PARTITION(part, XPC_DEACTIVATE_PARTITION(part,
xpc_map_bte_errors(bres)); xpc_map_bte_errors(bres));
continue; continue;
} }
@ -459,8 +444,8 @@ xpc_check_remote_hb(void)
remote_vars->heartbeating_to_mask); remote_vars->heartbeating_to_mask);
if (((remote_vars->heartbeat == part->last_heartbeat) && if (((remote_vars->heartbeat == part->last_heartbeat) &&
(remote_vars->heartbeat_offline == 0)) || (remote_vars->heartbeat_offline == 0)) ||
!xpc_hb_allowed(sn_partition_id, remote_vars)) { !xpc_hb_allowed(sn_partition_id, remote_vars)) {
XPC_DEACTIVATE_PARTITION(part, xpcNoHeartbeat); XPC_DEACTIVATE_PARTITION(part, xpcNoHeartbeat);
continue; continue;
@ -470,7 +455,6 @@ xpc_check_remote_hb(void)
} }
} }
/* /*
* Get a copy of a portion of the remote partition's rsvd page. * Get a copy of a portion of the remote partition's rsvd page.
* *
@ -480,11 +464,10 @@ xpc_check_remote_hb(void)
*/ */
static enum xpc_retval static enum xpc_retval
xpc_get_remote_rp(int nasid, u64 *discovered_nasids, xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
struct xpc_rsvd_page *remote_rp, u64 *remote_rp_pa) struct xpc_rsvd_page *remote_rp, u64 *remote_rp_pa)
{ {
int bres, i; int bres, i;
/* get the reserved page's physical address */ /* get the reserved page's physical address */
*remote_rp_pa = xpc_get_rsvd_page_pa(nasid); *remote_rp_pa = xpc_get_rsvd_page_pa(nasid);
@ -492,30 +475,26 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
return xpcNoRsvdPageAddr; return xpcNoRsvdPageAddr;
} }
/* pull over the reserved page header and part_nasids mask */ /* pull over the reserved page header and part_nasids mask */
bres = xp_bte_copy(*remote_rp_pa, (u64) remote_rp, bres = xp_bte_copy(*remote_rp_pa, (u64)remote_rp,
XPC_RP_HEADER_SIZE + xp_nasid_mask_bytes, XPC_RP_HEADER_SIZE + xp_nasid_mask_bytes,
(BTE_NOTIFY | BTE_WACQUIRE), NULL); (BTE_NOTIFY | BTE_WACQUIRE), NULL);
if (bres != BTE_SUCCESS) { if (bres != BTE_SUCCESS) {
return xpc_map_bte_errors(bres); return xpc_map_bte_errors(bres);
} }
if (discovered_nasids != NULL) { if (discovered_nasids != NULL) {
u64 *remote_part_nasids = XPC_RP_PART_NASIDS(remote_rp); u64 *remote_part_nasids = XPC_RP_PART_NASIDS(remote_rp);
for (i = 0; i < xp_nasid_mask_words; i++) { for (i = 0; i < xp_nasid_mask_words; i++) {
discovered_nasids[i] |= remote_part_nasids[i]; discovered_nasids[i] |= remote_part_nasids[i];
} }
} }
/* check that the partid is for another partition */ /* check that the partid is for another partition */
if (remote_rp->partid < 1 || if (remote_rp->partid < 1 ||
remote_rp->partid > (XP_MAX_PARTITIONS - 1)) { remote_rp->partid > (XP_MAX_PARTITIONS - 1)) {
return xpcInvalidPartid; return xpcInvalidPartid;
} }
@ -523,16 +502,14 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
return xpcLocalPartid; return xpcLocalPartid;
} }
if (XPC_VERSION_MAJOR(remote_rp->version) != if (XPC_VERSION_MAJOR(remote_rp->version) !=
XPC_VERSION_MAJOR(XPC_RP_VERSION)) { XPC_VERSION_MAJOR(XPC_RP_VERSION)) {
return xpcBadVersion; return xpcBadVersion;
} }
return xpcSuccess; return xpcSuccess;
} }
/* /*
* Get a copy of the remote partition's XPC variables from the reserved page. * Get a copy of the remote partition's XPC variables from the reserved page.
* *
@ -544,34 +521,32 @@ xpc_get_remote_vars(u64 remote_vars_pa, struct xpc_vars *remote_vars)
{ {
int bres; int bres;
if (remote_vars_pa == 0) { if (remote_vars_pa == 0) {
return xpcVarsNotSet; return xpcVarsNotSet;
} }
/* pull over the cross partition variables */ /* pull over the cross partition variables */
bres = xp_bte_copy(remote_vars_pa, (u64) remote_vars, XPC_RP_VARS_SIZE, bres = xp_bte_copy(remote_vars_pa, (u64)remote_vars, XPC_RP_VARS_SIZE,
(BTE_NOTIFY | BTE_WACQUIRE), NULL); (BTE_NOTIFY | BTE_WACQUIRE), NULL);
if (bres != BTE_SUCCESS) { if (bres != BTE_SUCCESS) {
return xpc_map_bte_errors(bres); return xpc_map_bte_errors(bres);
} }
if (XPC_VERSION_MAJOR(remote_vars->version) != if (XPC_VERSION_MAJOR(remote_vars->version) !=
XPC_VERSION_MAJOR(XPC_V_VERSION)) { XPC_VERSION_MAJOR(XPC_V_VERSION)) {
return xpcBadVersion; return xpcBadVersion;
} }
return xpcSuccess; return xpcSuccess;
} }
/* /*
* Update the remote partition's info. * Update the remote partition's info.
*/ */
static void static void
xpc_update_partition_info(struct xpc_partition *part, u8 remote_rp_version, xpc_update_partition_info(struct xpc_partition *part, u8 remote_rp_version,
struct timespec *remote_rp_stamp, u64 remote_rp_pa, struct timespec *remote_rp_stamp, u64 remote_rp_pa,
u64 remote_vars_pa, struct xpc_vars *remote_vars) u64 remote_vars_pa, struct xpc_vars *remote_vars)
{ {
part->remote_rp_version = remote_rp_version; part->remote_rp_version = remote_rp_version;
dev_dbg(xpc_part, " remote_rp_version = 0x%016x\n", dev_dbg(xpc_part, " remote_rp_version = 0x%016x\n",
@ -613,7 +588,6 @@ xpc_update_partition_info(struct xpc_partition *part, u8 remote_rp_version,
part->remote_vars_version); part->remote_vars_version);
} }
/* /*
* Prior code has determined the nasid which generated an IPI. Inspect * Prior code has determined the nasid which generated an IPI. Inspect
* that nasid to determine if its partition needs to be activated or * that nasid to determine if its partition needs to be activated or
@ -643,15 +617,14 @@ xpc_identify_act_IRQ_req(int nasid)
struct xpc_partition *part; struct xpc_partition *part;
enum xpc_retval ret; enum xpc_retval ret;
/* pull over the reserved page structure */ /* pull over the reserved page structure */
remote_rp = (struct xpc_rsvd_page *) xpc_remote_copy_buffer; remote_rp = (struct xpc_rsvd_page *)xpc_remote_copy_buffer;
ret = xpc_get_remote_rp(nasid, NULL, remote_rp, &remote_rp_pa); ret = xpc_get_remote_rp(nasid, NULL, remote_rp, &remote_rp_pa);
if (ret != xpcSuccess) { if (ret != xpcSuccess) {
dev_warn(xpc_part, "unable to get reserved page from nasid %d, " dev_warn(xpc_part, "unable to get reserved page from nasid %d, "
"which sent interrupt, reason=%d\n", nasid, ret); "which sent interrupt, reason=%d\n", nasid, ret);
return; return;
} }
@ -663,34 +636,31 @@ xpc_identify_act_IRQ_req(int nasid)
partid = remote_rp->partid; partid = remote_rp->partid;
part = &xpc_partitions[partid]; part = &xpc_partitions[partid];
/* pull over the cross partition variables */ /* pull over the cross partition variables */
remote_vars = (struct xpc_vars *) xpc_remote_copy_buffer; remote_vars = (struct xpc_vars *)xpc_remote_copy_buffer;
ret = xpc_get_remote_vars(remote_vars_pa, remote_vars); ret = xpc_get_remote_vars(remote_vars_pa, remote_vars);
if (ret != xpcSuccess) { if (ret != xpcSuccess) {
dev_warn(xpc_part, "unable to get XPC variables from nasid %d, " dev_warn(xpc_part, "unable to get XPC variables from nasid %d, "
"which sent interrupt, reason=%d\n", nasid, ret); "which sent interrupt, reason=%d\n", nasid, ret);
XPC_DEACTIVATE_PARTITION(part, ret); XPC_DEACTIVATE_PARTITION(part, ret);
return; return;
} }
part->act_IRQ_rcvd++; part->act_IRQ_rcvd++;
dev_dbg(xpc_part, "partid for nasid %d is %d; IRQs = %d; HB = " dev_dbg(xpc_part, "partid for nasid %d is %d; IRQs = %d; HB = "
"%ld:0x%lx\n", (int) nasid, (int) partid, part->act_IRQ_rcvd, "%ld:0x%lx\n", (int)nasid, (int)partid, part->act_IRQ_rcvd,
remote_vars->heartbeat, remote_vars->heartbeating_to_mask); remote_vars->heartbeat, remote_vars->heartbeating_to_mask);
if (xpc_partition_disengaged(part) && if (xpc_partition_disengaged(part) && part->act_state == XPC_P_INACTIVE) {
part->act_state == XPC_P_INACTIVE) {
xpc_update_partition_info(part, remote_rp_version, xpc_update_partition_info(part, remote_rp_version,
&remote_rp_stamp, remote_rp_pa, &remote_rp_stamp, remote_rp_pa,
remote_vars_pa, remote_vars); remote_vars_pa, remote_vars);
if (XPC_SUPPORTS_DISENGAGE_REQUEST(part->remote_vars_version)) { if (XPC_SUPPORTS_DISENGAGE_REQUEST(part->remote_vars_version)) {
if (xpc_partition_disengage_requested(1UL << partid)) { if (xpc_partition_disengage_requested(1UL << partid)) {
@ -714,16 +684,15 @@ xpc_identify_act_IRQ_req(int nasid)
if (!XPC_SUPPORTS_RP_STAMP(part->remote_rp_version)) { if (!XPC_SUPPORTS_RP_STAMP(part->remote_rp_version)) {
DBUG_ON(XPC_SUPPORTS_DISENGAGE_REQUEST(part-> DBUG_ON(XPC_SUPPORTS_DISENGAGE_REQUEST(part->
remote_vars_version)); remote_vars_version));
if (!XPC_SUPPORTS_RP_STAMP(remote_rp_version)) { if (!XPC_SUPPORTS_RP_STAMP(remote_rp_version)) {
DBUG_ON(XPC_SUPPORTS_DISENGAGE_REQUEST(remote_vars-> DBUG_ON(XPC_SUPPORTS_DISENGAGE_REQUEST(remote_vars->
version)); version));
/* see if the other side rebooted */ /* see if the other side rebooted */
if (part->remote_amos_page_pa == if (part->remote_amos_page_pa ==
remote_vars->amos_page_pa && remote_vars->amos_page_pa &&
xpc_hb_allowed(sn_partition_id, xpc_hb_allowed(sn_partition_id, remote_vars)) {
remote_vars)) {
/* doesn't look that way, so ignore the IPI */ /* doesn't look that way, so ignore the IPI */
return; return;
} }
@ -735,8 +704,8 @@ xpc_identify_act_IRQ_req(int nasid)
*/ */
xpc_update_partition_info(part, remote_rp_version, xpc_update_partition_info(part, remote_rp_version,
&remote_rp_stamp, remote_rp_pa, &remote_rp_stamp, remote_rp_pa,
remote_vars_pa, remote_vars); remote_vars_pa, remote_vars);
part->reactivate_nasid = nasid; part->reactivate_nasid = nasid;
XPC_DEACTIVATE_PARTITION(part, xpcReactivating); XPC_DEACTIVATE_PARTITION(part, xpcReactivating);
return; return;
@ -756,15 +725,15 @@ xpc_identify_act_IRQ_req(int nasid)
xpc_clear_partition_disengage_request(1UL << partid); xpc_clear_partition_disengage_request(1UL << partid);
xpc_update_partition_info(part, remote_rp_version, xpc_update_partition_info(part, remote_rp_version,
&remote_rp_stamp, remote_rp_pa, &remote_rp_stamp, remote_rp_pa,
remote_vars_pa, remote_vars); remote_vars_pa, remote_vars);
reactivate = 1; reactivate = 1;
} else { } else {
DBUG_ON(!XPC_SUPPORTS_DISENGAGE_REQUEST(remote_vars->version)); DBUG_ON(!XPC_SUPPORTS_DISENGAGE_REQUEST(remote_vars->version));
stamp_diff = xpc_compare_stamps(&part->remote_rp_stamp, stamp_diff = xpc_compare_stamps(&part->remote_rp_stamp,
&remote_rp_stamp); &remote_rp_stamp);
if (stamp_diff != 0) { if (stamp_diff != 0) {
DBUG_ON(stamp_diff >= 0); DBUG_ON(stamp_diff >= 0);
@ -775,17 +744,18 @@ xpc_identify_act_IRQ_req(int nasid)
DBUG_ON(xpc_partition_engaged(1UL << partid)); DBUG_ON(xpc_partition_engaged(1UL << partid));
DBUG_ON(xpc_partition_disengage_requested(1UL << DBUG_ON(xpc_partition_disengage_requested(1UL <<
partid)); partid));
xpc_update_partition_info(part, remote_rp_version, xpc_update_partition_info(part, remote_rp_version,
&remote_rp_stamp, remote_rp_pa, &remote_rp_stamp,
remote_vars_pa, remote_vars); remote_rp_pa, remote_vars_pa,
remote_vars);
reactivate = 1; reactivate = 1;
} }
} }
if (part->disengage_request_timeout > 0 && if (part->disengage_request_timeout > 0 &&
!xpc_partition_disengaged(part)) { !xpc_partition_disengaged(part)) {
/* still waiting on other side to disengage from us */ /* still waiting on other side to disengage from us */
return; return;
} }
@ -795,12 +765,11 @@ xpc_identify_act_IRQ_req(int nasid)
XPC_DEACTIVATE_PARTITION(part, xpcReactivating); XPC_DEACTIVATE_PARTITION(part, xpcReactivating);
} else if (XPC_SUPPORTS_DISENGAGE_REQUEST(part->remote_vars_version) && } else if (XPC_SUPPORTS_DISENGAGE_REQUEST(part->remote_vars_version) &&
xpc_partition_disengage_requested(1UL << partid)) { xpc_partition_disengage_requested(1UL << partid)) {
XPC_DEACTIVATE_PARTITION(part, xpcOtherGoingDown); XPC_DEACTIVATE_PARTITION(part, xpcOtherGoingDown);
} }
} }
/* /*
* Loop through the activation AMO variables and process any bits * Loop through the activation AMO variables and process any bits
* which are set. Each bit indicates a nasid sending a partition * which are set. Each bit indicates a nasid sending a partition
@ -813,14 +782,12 @@ xpc_identify_act_IRQ_sender(void)
{ {
int word, bit; int word, bit;
u64 nasid_mask; u64 nasid_mask;
u64 nasid; /* remote nasid */ u64 nasid; /* remote nasid */
int n_IRQs_detected = 0; int n_IRQs_detected = 0;
AMO_t *act_amos; AMO_t *act_amos;
act_amos = xpc_vars->amos_page + XPC_ACTIVATE_IRQ_AMOS; act_amos = xpc_vars->amos_page + XPC_ACTIVATE_IRQ_AMOS;
/* scan through act AMO variable looking for non-zero entries */ /* scan through act AMO variable looking for non-zero entries */
for (word = 0; word < xp_nasid_mask_words; word++) { for (word = 0; word < xp_nasid_mask_words; word++) {
@ -837,7 +804,6 @@ xpc_identify_act_IRQ_sender(void)
dev_dbg(xpc_part, "AMO[%d] gave back 0x%lx\n", word, dev_dbg(xpc_part, "AMO[%d] gave back 0x%lx\n", word,
nasid_mask); nasid_mask);
/* /*
* If this nasid has been added to the machine since * If this nasid has been added to the machine since
* our partition was reset, this will retain the * our partition was reset, this will retain the
@ -846,7 +812,6 @@ xpc_identify_act_IRQ_sender(void)
*/ */
xpc_mach_nasids[word] |= nasid_mask; xpc_mach_nasids[word] |= nasid_mask;
/* locate the nasid(s) which sent interrupts */ /* locate the nasid(s) which sent interrupts */
for (bit = 0; bit < (8 * sizeof(u64)); bit++) { for (bit = 0; bit < (8 * sizeof(u64)); bit++) {
@ -862,7 +827,6 @@ xpc_identify_act_IRQ_sender(void)
return n_IRQs_detected; return n_IRQs_detected;
} }
/* /*
* See if the other side has responded to a partition disengage request * See if the other side has responded to a partition disengage request
* from us. * from us.
@ -873,7 +837,6 @@ xpc_partition_disengaged(struct xpc_partition *part)
partid_t partid = XPC_PARTID(part); partid_t partid = XPC_PARTID(part);
int disengaged; int disengaged;
disengaged = (xpc_partition_engaged(1UL << partid) == 0); disengaged = (xpc_partition_engaged(1UL << partid) == 0);
if (part->disengage_request_timeout) { if (part->disengage_request_timeout) {
if (!disengaged) { if (!disengaged) {
@ -888,7 +851,7 @@ xpc_partition_disengaged(struct xpc_partition *part)
*/ */
dev_info(xpc_part, "disengage from remote partition %d " dev_info(xpc_part, "disengage from remote partition %d "
"timed out\n", partid); "timed out\n", partid);
xpc_disengage_request_timedout = 1; xpc_disengage_request_timedout = 1;
xpc_clear_partition_engaged(1UL << partid); xpc_clear_partition_engaged(1UL << partid);
disengaged = 1; disengaged = 1;
@ -898,11 +861,11 @@ xpc_partition_disengaged(struct xpc_partition *part)
/* cancel the timer function, provided it's not us */ /* cancel the timer function, provided it's not us */
if (!in_interrupt()) { if (!in_interrupt()) {
del_singleshot_timer_sync(&part-> del_singleshot_timer_sync(&part->
disengage_request_timer); disengage_request_timer);
} }
DBUG_ON(part->act_state != XPC_P_DEACTIVATING && DBUG_ON(part->act_state != XPC_P_DEACTIVATING &&
part->act_state != XPC_P_INACTIVE); part->act_state != XPC_P_INACTIVE);
if (part->act_state != XPC_P_INACTIVE) { if (part->act_state != XPC_P_INACTIVE) {
xpc_wakeup_channel_mgr(part); xpc_wakeup_channel_mgr(part);
} }
@ -914,7 +877,6 @@ xpc_partition_disengaged(struct xpc_partition *part)
return disengaged; return disengaged;
} }
/* /*
* Mark specified partition as active. * Mark specified partition as active.
*/ */
@ -924,7 +886,6 @@ xpc_mark_partition_active(struct xpc_partition *part)
unsigned long irq_flags; unsigned long irq_flags;
enum xpc_retval ret; enum xpc_retval ret;
dev_dbg(xpc_part, "setting partition %d to ACTIVE\n", XPC_PARTID(part)); dev_dbg(xpc_part, "setting partition %d to ACTIVE\n", XPC_PARTID(part));
spin_lock_irqsave(&part->act_lock, irq_flags); spin_lock_irqsave(&part->act_lock, irq_flags);
@ -940,17 +901,15 @@ xpc_mark_partition_active(struct xpc_partition *part)
return ret; return ret;
} }
/* /*
* Notify XPC that the partition is down. * Notify XPC that the partition is down.
*/ */
void void
xpc_deactivate_partition(const int line, struct xpc_partition *part, xpc_deactivate_partition(const int line, struct xpc_partition *part,
enum xpc_retval reason) enum xpc_retval reason)
{ {
unsigned long irq_flags; unsigned long irq_flags;
spin_lock_irqsave(&part->act_lock, irq_flags); spin_lock_irqsave(&part->act_lock, irq_flags);
if (part->act_state == XPC_P_INACTIVE) { if (part->act_state == XPC_P_INACTIVE) {
@ -964,7 +923,7 @@ xpc_deactivate_partition(const int line, struct xpc_partition *part,
} }
if (part->act_state == XPC_P_DEACTIVATING) { if (part->act_state == XPC_P_DEACTIVATING) {
if ((part->reason == xpcUnloading && reason != xpcUnloading) || if ((part->reason == xpcUnloading && reason != xpcUnloading) ||
reason == xpcReactivating) { reason == xpcReactivating) {
XPC_SET_REASON(part, reason, line); XPC_SET_REASON(part, reason, line);
} }
spin_unlock_irqrestore(&part->act_lock, irq_flags); spin_unlock_irqrestore(&part->act_lock, irq_flags);
@ -982,9 +941,9 @@ xpc_deactivate_partition(const int line, struct xpc_partition *part,
/* set a timelimit on the disengage request */ /* set a timelimit on the disengage request */
part->disengage_request_timeout = jiffies + part->disengage_request_timeout = jiffies +
(xpc_disengage_request_timelimit * HZ); (xpc_disengage_request_timelimit * HZ);
part->disengage_request_timer.expires = part->disengage_request_timer.expires =
part->disengage_request_timeout; part->disengage_request_timeout;
add_timer(&part->disengage_request_timer); add_timer(&part->disengage_request_timer);
} }
@ -994,7 +953,6 @@ xpc_deactivate_partition(const int line, struct xpc_partition *part,
xpc_partition_going_down(part, reason); xpc_partition_going_down(part, reason);
} }
/* /*
* Mark specified partition as inactive. * Mark specified partition as inactive.
*/ */
@ -1003,7 +961,6 @@ xpc_mark_partition_inactive(struct xpc_partition *part)
{ {
unsigned long irq_flags; unsigned long irq_flags;
dev_dbg(xpc_part, "setting partition %d to INACTIVE\n", dev_dbg(xpc_part, "setting partition %d to INACTIVE\n",
XPC_PARTID(part)); XPC_PARTID(part));
@ -1013,7 +970,6 @@ xpc_mark_partition_inactive(struct xpc_partition *part)
part->remote_rp_pa = 0; part->remote_rp_pa = 0;
} }
/* /*
* SAL has provided a partition and machine mask. The partition mask * SAL has provided a partition and machine mask. The partition mask
* contains a bit for each even nasid in our partition. The machine * contains a bit for each even nasid in our partition. The machine
@ -1041,24 +997,22 @@ xpc_discovery(void)
u64 *discovered_nasids; u64 *discovered_nasids;
enum xpc_retval ret; enum xpc_retval ret;
remote_rp = xpc_kmalloc_cacheline_aligned(XPC_RP_HEADER_SIZE + remote_rp = xpc_kmalloc_cacheline_aligned(XPC_RP_HEADER_SIZE +
xp_nasid_mask_bytes, xp_nasid_mask_bytes,
GFP_KERNEL, &remote_rp_base); GFP_KERNEL, &remote_rp_base);
if (remote_rp == NULL) { if (remote_rp == NULL) {
return; return;
} }
remote_vars = (struct xpc_vars *) remote_rp; remote_vars = (struct xpc_vars *)remote_rp;
discovered_nasids = kzalloc(sizeof(u64) * xp_nasid_mask_words, discovered_nasids = kzalloc(sizeof(u64) * xp_nasid_mask_words,
GFP_KERNEL); GFP_KERNEL);
if (discovered_nasids == NULL) { if (discovered_nasids == NULL) {
kfree(remote_rp_base); kfree(remote_rp_base);
return; return;
} }
rp = (struct xpc_rsvd_page *) xpc_rsvd_page; rp = (struct xpc_rsvd_page *)xpc_rsvd_page;
/* /*
* The term 'region' in this context refers to the minimum number of * The term 'region' in this context refers to the minimum number of
@ -1081,23 +1035,21 @@ xpc_discovery(void)
for (region = 0; region < max_regions; region++) { for (region = 0; region < max_regions; region++) {
if ((volatile int) xpc_exiting) { if ((volatile int)xpc_exiting) {
break; break;
} }
dev_dbg(xpc_part, "searching region %d\n", region); dev_dbg(xpc_part, "searching region %d\n", region);
for (nasid = (region * region_size * 2); for (nasid = (region * region_size * 2);
nasid < ((region + 1) * region_size * 2); nasid < ((region + 1) * region_size * 2); nasid += 2) {
nasid += 2) {
if ((volatile int) xpc_exiting) { if ((volatile int)xpc_exiting) {
break; break;
} }
dev_dbg(xpc_part, "checking nasid %d\n", nasid); dev_dbg(xpc_part, "checking nasid %d\n", nasid);
if (XPC_NASID_IN_ARRAY(nasid, xpc_part_nasids)) { if (XPC_NASID_IN_ARRAY(nasid, xpc_part_nasids)) {
dev_dbg(xpc_part, "PROM indicates Nasid %d is " dev_dbg(xpc_part, "PROM indicates Nasid %d is "
"part of the local partition; skipping " "part of the local partition; skipping "
@ -1119,11 +1071,10 @@ xpc_discovery(void)
continue; continue;
} }
/* pull over the reserved page structure */ /* pull over the reserved page structure */
ret = xpc_get_remote_rp(nasid, discovered_nasids, ret = xpc_get_remote_rp(nasid, discovered_nasids,
remote_rp, &remote_rp_pa); remote_rp, &remote_rp_pa);
if (ret != xpcSuccess) { if (ret != xpcSuccess) {
dev_dbg(xpc_part, "unable to get reserved page " dev_dbg(xpc_part, "unable to get reserved page "
"from nasid %d, reason=%d\n", nasid, "from nasid %d, reason=%d\n", nasid,
@ -1140,7 +1091,6 @@ xpc_discovery(void)
partid = remote_rp->partid; partid = remote_rp->partid;
part = &xpc_partitions[partid]; part = &xpc_partitions[partid];
/* pull over the cross partition variables */ /* pull over the cross partition variables */
ret = xpc_get_remote_vars(remote_vars_pa, remote_vars); ret = xpc_get_remote_vars(remote_vars_pa, remote_vars);
@ -1171,15 +1121,15 @@ xpc_discovery(void)
* get the same page for remote_act_amos_pa after * get the same page for remote_act_amos_pa after
* module reloads and system reboots. * module reloads and system reboots.
*/ */
if (sn_register_xp_addr_region( if (sn_register_xp_addr_region
remote_vars->amos_page_pa, (remote_vars->amos_page_pa, PAGE_SIZE, 1) < 0) {
PAGE_SIZE, 1) < 0) { dev_dbg(xpc_part,
dev_dbg(xpc_part, "partition %d failed to " "partition %d failed to "
"register xp_addr region 0x%016lx\n", "register xp_addr region 0x%016lx\n",
partid, remote_vars->amos_page_pa); partid, remote_vars->amos_page_pa);
XPC_SET_REASON(part, xpcPhysAddrRegFailed, XPC_SET_REASON(part, xpcPhysAddrRegFailed,
__LINE__); __LINE__);
break; break;
} }
@ -1195,9 +1145,9 @@ xpc_discovery(void)
remote_vars->act_phys_cpuid); remote_vars->act_phys_cpuid);
if (XPC_SUPPORTS_DISENGAGE_REQUEST(remote_vars-> if (XPC_SUPPORTS_DISENGAGE_REQUEST(remote_vars->
version)) { version)) {
part->remote_amos_page_pa = part->remote_amos_page_pa =
remote_vars->amos_page_pa; remote_vars->amos_page_pa;
xpc_mark_partition_disengaged(part); xpc_mark_partition_disengaged(part);
xpc_cancel_partition_disengage_request(part); xpc_cancel_partition_disengage_request(part);
} }
@ -1209,7 +1159,6 @@ xpc_discovery(void)
kfree(remote_rp_base); kfree(remote_rp_base);
} }
/* /*
* Given a partid, get the nasids owned by that partition from the * Given a partid, get the nasids owned by that partition from the
* remote partition's reserved page. * remote partition's reserved page.
@ -1221,7 +1170,6 @@ xpc_initiate_partid_to_nasids(partid_t partid, void *nasid_mask)
u64 part_nasid_pa; u64 part_nasid_pa;
int bte_res; int bte_res;
part = &xpc_partitions[partid]; part = &xpc_partitions[partid];
if (part->remote_rp_pa == 0) { if (part->remote_rp_pa == 0) {
return xpcPartitionDown; return xpcPartitionDown;
@ -1229,11 +1177,11 @@ xpc_initiate_partid_to_nasids(partid_t partid, void *nasid_mask)
memset(nasid_mask, 0, XP_NASID_MASK_BYTES); memset(nasid_mask, 0, XP_NASID_MASK_BYTES);
part_nasid_pa = (u64) XPC_RP_PART_NASIDS(part->remote_rp_pa); part_nasid_pa = (u64)XPC_RP_PART_NASIDS(part->remote_rp_pa);
bte_res = xp_bte_copy(part_nasid_pa, (u64) nasid_mask, bte_res = xp_bte_copy(part_nasid_pa, (u64)nasid_mask,
xp_nasid_mask_bytes, (BTE_NOTIFY | BTE_WACQUIRE), NULL); xp_nasid_mask_bytes, (BTE_NOTIFY | BTE_WACQUIRE),
NULL);
return xpc_map_bte_errors(bte_res); return xpc_map_bte_errors(bte_res);
} }