Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)  * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * License.  See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * (C) Copyright 2020 Hewlett Packard Enterprise Development LP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (c) 2004-2008 Silicon Graphics, Inc.  All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * Cross Partition (XP) base.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  *	XP provides a base from which its users can interact
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  *	with XPC, yet not be dependent on XPC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include "xp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) /* define the XP debug device structures to be used with dev_dbg() et al */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) struct device_driver xp_dbg_name = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	.name = "xp"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) struct device xp_dbg_subname = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	.init_name = "",		/* set to "" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	.driver = &xp_dbg_name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) struct device *xp = &xp_dbg_subname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) /* max #of partitions possible */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) short xp_max_npartitions;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) EXPORT_SYMBOL_GPL(xp_max_npartitions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) short xp_partition_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) EXPORT_SYMBOL_GPL(xp_partition_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) u8 xp_region_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) EXPORT_SYMBOL_GPL(xp_region_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) unsigned long (*xp_pa) (void *addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) EXPORT_SYMBOL_GPL(xp_pa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) unsigned long (*xp_socket_pa) (unsigned long gpa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) EXPORT_SYMBOL_GPL(xp_socket_pa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) enum xp_retval (*xp_remote_memcpy) (unsigned long dst_gpa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 				    const unsigned long src_gpa, size_t len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) EXPORT_SYMBOL_GPL(xp_remote_memcpy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) int (*xp_cpu_to_nasid) (int cpuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) EXPORT_SYMBOL_GPL(xp_cpu_to_nasid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) enum xp_retval (*xp_expand_memprotect) (unsigned long phys_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 					unsigned long size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) EXPORT_SYMBOL_GPL(xp_expand_memprotect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) enum xp_retval (*xp_restrict_memprotect) (unsigned long phys_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 					  unsigned long size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) EXPORT_SYMBOL_GPL(xp_restrict_memprotect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66)  * xpc_registrations[] keeps track of xpc_connect()'s done by the kernel-level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67)  * users of XPC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) struct xpc_registration xpc_registrations[XPC_MAX_NCHANNELS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) EXPORT_SYMBOL_GPL(xpc_registrations);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73)  * Initialize the XPC interface to NULL to indicate that XPC isn't loaded.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) struct xpc_interface xpc_interface = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) EXPORT_SYMBOL_GPL(xpc_interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79)  * XPC calls this when it (the XPC module) has been loaded.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) xpc_set_interface(void (*connect) (int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		  void (*disconnect) (int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		  enum xp_retval (*send) (short, int, u32, void *, u16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		  enum xp_retval (*send_notify) (short, int, u32, void *, u16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 						  xpc_notify_func, void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		  void (*received) (short, int, void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		  enum xp_retval (*partid_to_nasids) (short, void *))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	xpc_interface.connect = connect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	xpc_interface.disconnect = disconnect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	xpc_interface.send = send;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	xpc_interface.send_notify = send_notify;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	xpc_interface.received = received;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	xpc_interface.partid_to_nasids = partid_to_nasids;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) EXPORT_SYMBOL_GPL(xpc_set_interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)  * XPC calls this when it (the XPC module) is being unloaded.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) xpc_clear_interface(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	memset(&xpc_interface, 0, sizeof(xpc_interface));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) EXPORT_SYMBOL_GPL(xpc_clear_interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)  * Register for automatic establishment of a channel connection whenever
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)  * a partition comes up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)  * Arguments:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)  *	ch_number - channel # to register for connection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)  *	func - function to call for asynchronous notification of channel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)  *	       state changes (i.e., connection, disconnection, error) and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)  *	       the arrival of incoming messages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)  *      key - pointer to optional user-defined value that gets passed back
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)  *	      to the user on any callouts made to func.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)  *	payload_size - size in bytes of the XPC message's payload area which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)  *		       contains a user-defined message. The user should make
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)  *		       this large enough to hold their largest message.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)  *	nentries - max #of XPC message entries a message queue can contain.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)  *		   The actual number, which is determined when a connection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)  * 		   is established and may be less then requested, will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)  *		   passed to the user via the xpConnected callout.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)  *	assigned_limit - max number of kthreads allowed to be processing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)  * 			 messages (per connection) at any given instant.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)  *	idle_limit - max number of kthreads allowed to be idle at any given
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)  * 		     instant.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) enum xp_retval
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) xpc_connect(int ch_number, xpc_channel_func func, void *key, u16 payload_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	    u16 nentries, u32 assigned_limit, u32 idle_limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	struct xpc_registration *registration;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	DBUG_ON(ch_number < 0 || ch_number >= XPC_MAX_NCHANNELS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	DBUG_ON(payload_size == 0 || nentries == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	DBUG_ON(func == NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	DBUG_ON(assigned_limit == 0 || idle_limit > assigned_limit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	if (XPC_MSG_SIZE(payload_size) > XPC_MSG_MAX_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		return xpPayloadTooBig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	registration = &xpc_registrations[ch_number];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	if (mutex_lock_interruptible(&registration->mutex) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		return xpInterrupted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	/* if XPC_CHANNEL_REGISTERED(ch_number) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	if (registration->func != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		mutex_unlock(&registration->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		return xpAlreadyRegistered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	/* register the channel for connection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	registration->entry_size = XPC_MSG_SIZE(payload_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	registration->nentries = nentries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	registration->assigned_limit = assigned_limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	registration->idle_limit = idle_limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	registration->key = key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	registration->func = func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	mutex_unlock(&registration->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	if (xpc_interface.connect)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		xpc_interface.connect(ch_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	return xpSuccess;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) EXPORT_SYMBOL_GPL(xpc_connect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)  * Remove the registration for automatic connection of the specified channel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)  * when a partition comes up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)  * Before returning this xpc_disconnect() will wait for all connections on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)  * specified channel have been closed/torndown. So the caller can be assured
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)  * that they will not be receiving any more callouts from XPC to their
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)  * function registered via xpc_connect().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)  * Arguments:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)  *	ch_number - channel # to unregister.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) xpc_disconnect(int ch_number)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	struct xpc_registration *registration;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	DBUG_ON(ch_number < 0 || ch_number >= XPC_MAX_NCHANNELS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	registration = &xpc_registrations[ch_number];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	 * We've decided not to make this a down_interruptible(), since we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	 * figured XPC's users will just turn around and call xpc_disconnect()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	 * again anyways, so we might as well wait, if need be.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	mutex_lock(&registration->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	/* if !XPC_CHANNEL_REGISTERED(ch_number) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	if (registration->func == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		mutex_unlock(&registration->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	/* remove the connection registration for the specified channel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	registration->func = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	registration->key = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	registration->nentries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	registration->entry_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	registration->assigned_limit = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	registration->idle_limit = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (xpc_interface.disconnect)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		xpc_interface.disconnect(ch_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	mutex_unlock(&registration->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) EXPORT_SYMBOL_GPL(xpc_disconnect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static int __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) xp_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	enum xp_retval ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	int ch_number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	/* initialize the connection registration mutex */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	for (ch_number = 0; ch_number < XPC_MAX_NCHANNELS; ch_number++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		mutex_init(&xpc_registrations[ch_number].mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	if (is_uv_system())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		ret = xp_init_uv();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (ret != xpSuccess)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) module_init(xp_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static void __exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) xp_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	if (is_uv_system())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		xp_exit_uv();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) module_exit(xp_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) MODULE_AUTHOR("Silicon Graphics, Inc.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) MODULE_DESCRIPTION("Cross Partition (XP) base");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) MODULE_LICENSE("GPL");