Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
Dean Nelson | 45d9ca4 | 2008-04-22 14:46:56 -0500 | [diff] [blame] | 6 | * Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved. |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 9 | /* |
| 10 | * Cross Partition Communication (XPC) structures and macros. |
| 11 | */ |
| 12 | |
Dean Nelson | 45d9ca4 | 2008-04-22 14:46:56 -0500 | [diff] [blame] | 13 | #ifndef _DRIVERS_MISC_SGIXP_XPC_H |
| 14 | #define _DRIVERS_MISC_SGIXP_XPC_H |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 15 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/sysctl.h> |
| 18 | #include <linux/device.h> |
Jes Sorensen | f9e505a | 2006-01-17 12:52:21 -0500 | [diff] [blame] | 19 | #include <linux/mutex.h> |
| 20 | #include <linux/completion.h> |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 21 | #include <asm/pgtable.h> |
| 22 | #include <asm/processor.h> |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 23 | #include <asm/sn/clksupport.h> |
| 24 | #include <asm/sn/addrs.h> |
| 25 | #include <asm/sn/mspec.h> |
| 26 | #include <asm/sn/shub_mmr.h> |
Dean Nelson | 45d9ca4 | 2008-04-22 14:46:56 -0500 | [diff] [blame] | 27 | #include "xp.h" |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 28 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 29 | /* |
| 30 | * XPC Version numbers consist of a major and minor number. XPC can always |
| 31 | * talk to versions with same major #, and never talk to versions with a |
| 32 | * different major #. |
| 33 | */ |
| 34 | #define _XPC_VERSION(_maj, _min) (((_maj) << 4) | ((_min) & 0xf)) |
| 35 | #define XPC_VERSION_MAJOR(_v) ((_v) >> 4) |
| 36 | #define XPC_VERSION_MINOR(_v) ((_v) & 0xf) |
| 37 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 38 | /* |
| 39 | * The next macros define word or bit representations for given |
| 40 | * C-brick nasid in either the SAL provided bit array representing |
| 41 | * nasids in the partition/machine or the AMO_t array used for |
| 42 | * inter-partition initiation communications. |
| 43 | * |
| 44 | * For SN2 machines, C-Bricks are alway even numbered NASIDs. As |
| 45 | * such, some space will be saved by insisting that nasid information |
| 46 | * passed from SAL always be packed for C-Bricks and the |
| 47 | * cross-partition interrupts use the same packing scheme. |
| 48 | */ |
| 49 | #define XPC_NASID_W_INDEX(_n) (((_n) / 64) / 2) |
| 50 | #define XPC_NASID_B_INDEX(_n) (((_n) / 2) & (64 - 1)) |
| 51 | #define XPC_NASID_IN_ARRAY(_n, _p) ((_p)[XPC_NASID_W_INDEX(_n)] & \ |
| 52 | (1UL << XPC_NASID_B_INDEX(_n))) |
| 53 | #define XPC_NASID_FROM_W_B(_w, _b) (((_w) * 64 + (_b)) * 2) |
| 54 | |
| 55 | #define XPC_HB_DEFAULT_INTERVAL 5 /* incr HB every x secs */ |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 56 | #define XPC_HB_CHECK_DEFAULT_INTERVAL 20 /* check HB every x secs */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 57 | |
| 58 | /* define the process name of HB checker and the CPU it is pinned to */ |
| 59 | #define XPC_HB_CHECK_THREAD_NAME "xpc_hb" |
| 60 | #define XPC_HB_CHECK_CPU 0 |
| 61 | |
| 62 | /* define the process name of the discovery thread */ |
| 63 | #define XPC_DISCOVERY_THREAD_NAME "xpc_discovery" |
| 64 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 65 | /* |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 66 | * the reserved page |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 67 | * |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 68 | * SAL reserves one page of memory per partition for XPC. Though a full page |
| 69 | * in length (16384 bytes), its starting address is not page aligned, but it |
| 70 | * is cacheline aligned. The reserved page consists of the following: |
| 71 | * |
| 72 | * reserved page header |
| 73 | * |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 74 | * The first two 64-byte cachelines of the reserved page contain the |
| 75 | * header (struct xpc_rsvd_page). Before SAL initialization has completed, |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 76 | * SAL has set up the following fields of the reserved page header: |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 77 | * SAL_signature, SAL_version, SAL_partid, and SAL_nasids_size. The |
| 78 | * other fields are set up by XPC. (xpc_rsvd_page points to the local |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 79 | * partition's reserved page.) |
| 80 | * |
| 81 | * part_nasids mask |
| 82 | * mach_nasids mask |
| 83 | * |
| 84 | * SAL also sets up two bitmaps (or masks), one that reflects the actual |
| 85 | * nasids in this partition (part_nasids), and the other that reflects |
| 86 | * the actual nasids in the entire machine (mach_nasids). We're only |
| 87 | * interested in the even numbered nasids (which contain the processors |
| 88 | * and/or memory), so we only need half as many bits to represent the |
| 89 | * nasids. The part_nasids mask is located starting at the first cacheline |
| 90 | * following the reserved page header. The mach_nasids mask follows right |
| 91 | * after the part_nasids mask. The size in bytes of each mask is reflected |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 92 | * by the reserved page header field 'SAL_nasids_size'. (Local partition's |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 93 | * mask pointers are xpc_part_nasids and xpc_mach_nasids.) |
| 94 | * |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 95 | * vars (ia64-sn2 only) |
| 96 | * vars part (ia64-sn2 only) |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 97 | * |
| 98 | * Immediately following the mach_nasids mask are the XPC variables |
| 99 | * required by other partitions. First are those that are generic to all |
| 100 | * partitions (vars), followed on the next available cacheline by those |
| 101 | * which are partition specific (vars part). These are setup by XPC. |
| 102 | * (Local partition's vars pointers are xpc_vars and xpc_vars_part.) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 103 | * |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 104 | * Note: Until 'stamp' is set non-zero, the partition XPC code has not been |
| 105 | * initialized. |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 106 | */ |
| 107 | struct xpc_rsvd_page { |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 108 | u64 SAL_signature; /* SAL: unique signature */ |
| 109 | u64 SAL_version; /* SAL: version */ |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 110 | short SAL_partid; /* SAL: partition ID */ |
| 111 | short max_npartitions; /* value of XPC_MAX_PARTITIONS */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 112 | u8 version; |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 113 | u8 pad1[3]; /* align to next u64 in 1st 64-byte cacheline */ |
| 114 | union { |
| 115 | u64 vars_pa; /* physical address of struct xpc_vars */ |
| 116 | u64 activate_mq_gpa; /* global phys address of activate_mq */ |
| 117 | } sn; |
Dean Nelson | aaa3cd6 | 2008-07-29 22:34:07 -0700 | [diff] [blame^] | 118 | unsigned long stamp; /* time when reserved page was setup by XPC */ |
| 119 | u64 pad2[10]; /* align to last u64 in 2nd 64-byte cacheline */ |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 120 | u64 SAL_nasids_size; /* SAL: size of each nasid mask in bytes */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 121 | }; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 122 | |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 123 | #define XPC_RP_VERSION _XPC_VERSION(2, 0) /* version 2.0 of the reserved page */ |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 124 | |
| 125 | #define XPC_SUPPORTS_RP_STAMP(_version) \ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 126 | (_version >= _XPC_VERSION(1, 1)) |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 127 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 128 | /* |
| 129 | * Define the structures by which XPC variables can be exported to other |
| 130 | * partitions. (There are two: struct xpc_vars and struct xpc_vars_part) |
| 131 | */ |
| 132 | |
| 133 | /* |
| 134 | * The following structure describes the partition generic variables |
| 135 | * needed by other partitions in order to properly initialize. |
| 136 | * |
| 137 | * struct xpc_vars version number also applies to struct xpc_vars_part. |
| 138 | * Changes to either structure and/or related functionality should be |
| 139 | * reflected by incrementing either the major or minor version numbers |
| 140 | * of struct xpc_vars. |
| 141 | */ |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 142 | struct xpc_vars_sn2 { |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 143 | u8 version; |
| 144 | u64 heartbeat; |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 145 | DECLARE_BITMAP(heartbeating_to_mask, XP_MAX_NPARTITIONS_SN2); |
Dean Nelson | 780d09e | 2005-11-09 14:41:57 -0600 | [diff] [blame] | 146 | u64 heartbeat_offline; /* if 0, heartbeat should be changing */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 147 | int act_nasid; |
| 148 | int act_phys_cpuid; |
| 149 | u64 vars_part_pa; |
| 150 | u64 amos_page_pa; /* paddr of page of AMOs from MSPEC driver */ |
| 151 | AMO_t *amos_page; /* vaddr of page of AMOs from MSPEC driver */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 152 | }; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 153 | |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 154 | #define XPC_V_VERSION _XPC_VERSION(3, 1) /* version 3.1 of the cross vars */ |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 155 | |
| 156 | #define XPC_SUPPORTS_DISENGAGE_REQUEST(_version) \ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 157 | (_version >= _XPC_VERSION(3, 1)) |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 158 | |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 159 | /* |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 160 | * The following pertains to ia64-sn2 only. |
| 161 | * |
| 162 | * Memory for XPC's AMO variables is allocated by the MSPEC driver. These |
| 163 | * pages are located in the lowest granule. The lowest granule uses 4k pages |
| 164 | * for cached references and an alternate TLB handler to never provide a |
| 165 | * cacheable mapping for the entire region. This will prevent speculative |
| 166 | * reading of cached copies of our lines from being issued which will cause |
| 167 | * a PI FSB Protocol error to be generated by the SHUB. For XPC, we need 64 |
| 168 | * AMO variables (based on XP_MAX_NPARTITIONS_SN2) to identify the senders of |
| 169 | * NOTIFY IRQs, 128 AMO variables (based on XP_NASID_MASK_WORDS) to identify |
| 170 | * the senders of ACTIVATE IRQs, and 2 AMO variables to identify which remote |
| 171 | * partitions (i.e., XPCs) consider themselves currently engaged with the |
| 172 | * local XPC. |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 173 | */ |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 174 | #define XPC_NOTIFY_IRQ_AMOS 0 |
| 175 | #define XPC_ACTIVATE_IRQ_AMOS (XPC_NOTIFY_IRQ_AMOS + XP_MAX_NPARTITIONS_SN2) |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 176 | #define XPC_ENGAGED_PARTITIONS_AMO (XPC_ACTIVATE_IRQ_AMOS + XP_NASID_MASK_WORDS) |
| 177 | #define XPC_DISENGAGE_REQUEST_AMO (XPC_ENGAGED_PARTITIONS_AMO + 1) |
| 178 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 179 | /* |
| 180 | * The following structure describes the per partition specific variables. |
| 181 | * |
| 182 | * An array of these structures, one per partition, will be defined. As a |
| 183 | * partition becomes active XPC will copy the array entry corresponding to |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 184 | * itself from that partition. It is desirable that the size of this structure |
| 185 | * evenly divides into a 128-byte cacheline, such that none of the entries in |
| 186 | * this array crosses a 128-byte cacheline boundary. As it is now, each entry |
Dean Nelson | e17d416 | 2008-07-29 22:34:06 -0700 | [diff] [blame] | 187 | * occupies 64-bytes. |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 188 | */ |
Dean Nelson | e17d416 | 2008-07-29 22:34:06 -0700 | [diff] [blame] | 189 | struct xpc_vars_part_sn2 { |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 190 | u64 magic; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 191 | |
| 192 | u64 openclose_args_pa; /* physical address of open and close args */ |
| 193 | u64 GPs_pa; /* physical address of Get/Put values */ |
| 194 | |
| 195 | u64 IPI_amo_pa; /* physical address of IPI AMO_t structure */ |
| 196 | int IPI_nasid; /* nasid of where to send IPIs */ |
| 197 | int IPI_phys_cpuid; /* physical CPU ID of where to send IPIs */ |
| 198 | |
| 199 | u8 nchannels; /* #of defined channels supported */ |
| 200 | |
| 201 | u8 reserved[23]; /* pad to a full 64 bytes */ |
| 202 | }; |
| 203 | |
| 204 | /* |
| 205 | * The vars_part MAGIC numbers play a part in the first contact protocol. |
| 206 | * |
| 207 | * MAGIC1 indicates that the per partition specific variables for a remote |
| 208 | * partition have been initialized by this partition. |
| 209 | * |
| 210 | * MAGIC2 indicates that this partition has pulled the remote partititions |
| 211 | * per partition variables that pertain to this partition. |
| 212 | */ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 213 | #define XPC_VP_MAGIC1 0x0053524156435058L /* 'XPCVARS\0'L (little endian) */ |
| 214 | #define XPC_VP_MAGIC2 0x0073726176435058L /* 'XPCvars\0'L (little endian) */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 215 | |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 216 | /* the reserved page sizes and offsets */ |
| 217 | |
| 218 | #define XPC_RP_HEADER_SIZE L1_CACHE_ALIGN(sizeof(struct xpc_rsvd_page)) |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 219 | #define XPC_RP_VARS_SIZE L1_CACHE_ALIGN(sizeof(struct xpc_vars_sn2)) |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 220 | |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 221 | #define XPC_RP_PART_NASIDS(_rp) ((u64 *)((u8 *)(_rp) + XPC_RP_HEADER_SIZE)) |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 222 | #define XPC_RP_MACH_NASIDS(_rp) (XPC_RP_PART_NASIDS(_rp) + xp_nasid_mask_words) |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 223 | #define XPC_RP_VARS(_rp) ((struct xpc_vars_sn2 *)(XPC_RP_MACH_NASIDS(_rp) + \ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 224 | xp_nasid_mask_words)) |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 225 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 226 | /* |
| 227 | * Functions registered by add_timer() or called by kernel_thread() only |
| 228 | * allow for a single 64-bit argument. The following macros can be used to |
| 229 | * pack and unpack two (32-bit, 16-bit or 8-bit) arguments into or out from |
| 230 | * the passed argument. |
| 231 | */ |
| 232 | #define XPC_PACK_ARGS(_arg1, _arg2) \ |
| 233 | ((((u64) _arg1) & 0xffffffff) | \ |
| 234 | ((((u64) _arg2) & 0xffffffff) << 32)) |
| 235 | |
| 236 | #define XPC_UNPACK_ARG1(_args) (((u64) _args) & 0xffffffff) |
| 237 | #define XPC_UNPACK_ARG2(_args) ((((u64) _args) >> 32) & 0xffffffff) |
| 238 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 239 | /* |
| 240 | * Define a Get/Put value pair (pointers) used with a message queue. |
| 241 | */ |
| 242 | struct xpc_gp { |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 243 | s64 get; /* Get value */ |
| 244 | s64 put; /* Put value */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 245 | }; |
| 246 | |
| 247 | #define XPC_GP_SIZE \ |
Dean Nelson | bc63d38 | 2008-07-29 22:34:04 -0700 | [diff] [blame] | 248 | L1_CACHE_ALIGN(sizeof(struct xpc_gp) * XPC_MAX_NCHANNELS) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 249 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 250 | /* |
| 251 | * Define a structure that contains arguments associated with opening and |
| 252 | * closing a channel. |
| 253 | */ |
| 254 | struct xpc_openclose_args { |
| 255 | u16 reason; /* reason why channel is closing */ |
| 256 | u16 msg_size; /* sizeof each message entry */ |
| 257 | u16 remote_nentries; /* #of message entries in remote msg queue */ |
| 258 | u16 local_nentries; /* #of message entries in local msg queue */ |
| 259 | u64 local_msgqueue_pa; /* physical address of local message queue */ |
| 260 | }; |
| 261 | |
| 262 | #define XPC_OPENCLOSE_ARGS_SIZE \ |
Dean Nelson | bc63d38 | 2008-07-29 22:34:04 -0700 | [diff] [blame] | 263 | L1_CACHE_ALIGN(sizeof(struct xpc_openclose_args) * \ |
| 264 | XPC_MAX_NCHANNELS) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 265 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 266 | /* struct xpc_msg flags */ |
| 267 | |
| 268 | #define XPC_M_DONE 0x01 /* msg has been received/consumed */ |
| 269 | #define XPC_M_READY 0x02 /* msg is ready to be sent */ |
| 270 | #define XPC_M_INTERRUPT 0x04 /* send interrupt when msg consumed */ |
| 271 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 272 | #define XPC_MSG_ADDRESS(_payload) \ |
| 273 | ((struct xpc_msg *)((u8 *)(_payload) - XPC_MSG_PAYLOAD_OFFSET)) |
| 274 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 275 | /* |
| 276 | * Defines notify entry. |
| 277 | * |
| 278 | * This is used to notify a message's sender that their message was received |
| 279 | * and consumed by the intended recipient. |
| 280 | */ |
| 281 | struct xpc_notify { |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 282 | u8 type; /* type of notification */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 283 | |
| 284 | /* the following two fields are only used if type == XPC_N_CALL */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 285 | xpc_notify_func func; /* user's notify function */ |
| 286 | void *key; /* pointer to user's key */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 287 | }; |
| 288 | |
| 289 | /* struct xpc_notify type of notification */ |
| 290 | |
| 291 | #define XPC_N_CALL 0x01 /* notify function provided by user */ |
| 292 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 293 | /* |
| 294 | * Define the structure that manages all the stuff required by a channel. In |
| 295 | * particular, they are used to manage the messages sent across the channel. |
| 296 | * |
| 297 | * This structure is private to a partition, and is NOT shared across the |
| 298 | * partition boundary. |
| 299 | * |
| 300 | * There is an array of these structures for each remote partition. It is |
| 301 | * allocated at the time a partition becomes active. The array contains one |
| 302 | * of these structures for each potential channel connection to that partition. |
| 303 | * |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 304 | >>> sn2 only!!! |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 305 | * Each of these structures manages two message queues (circular buffers). |
| 306 | * They are allocated at the time a channel connection is made. One of |
| 307 | * these message queues (local_msgqueue) holds the locally created messages |
| 308 | * that are destined for the remote partition. The other of these message |
| 309 | * queues (remote_msgqueue) is a locally cached copy of the remote partition's |
| 310 | * own local_msgqueue. |
| 311 | * |
| 312 | * The following is a description of the Get/Put pointers used to manage these |
| 313 | * two message queues. Consider the local_msgqueue to be on one partition |
| 314 | * and the remote_msgqueue to be its cached copy on another partition. A |
| 315 | * description of what each of the lettered areas contains is included. |
| 316 | * |
| 317 | * |
| 318 | * local_msgqueue remote_msgqueue |
| 319 | * |
| 320 | * |/////////| |/////////| |
| 321 | * w_remote_GP.get --> +---------+ |/////////| |
| 322 | * | F | |/////////| |
| 323 | * remote_GP.get --> +---------+ +---------+ <-- local_GP->get |
| 324 | * | | | | |
| 325 | * | | | E | |
| 326 | * | | | | |
| 327 | * | | +---------+ <-- w_local_GP.get |
| 328 | * | B | |/////////| |
| 329 | * | | |////D////| |
| 330 | * | | |/////////| |
| 331 | * | | +---------+ <-- w_remote_GP.put |
| 332 | * | | |////C////| |
| 333 | * local_GP->put --> +---------+ +---------+ <-- remote_GP.put |
| 334 | * | | |/////////| |
| 335 | * | A | |/////////| |
| 336 | * | | |/////////| |
| 337 | * w_local_GP.put --> +---------+ |/////////| |
| 338 | * |/////////| |/////////| |
| 339 | * |
| 340 | * |
| 341 | * ( remote_GP.[get|put] are cached copies of the remote |
| 342 | * partition's local_GP->[get|put], and thus their values can |
| 343 | * lag behind their counterparts on the remote partition. ) |
| 344 | * |
| 345 | * |
| 346 | * A - Messages that have been allocated, but have not yet been sent to the |
| 347 | * remote partition. |
| 348 | * |
| 349 | * B - Messages that have been sent, but have not yet been acknowledged by the |
| 350 | * remote partition as having been received. |
| 351 | * |
| 352 | * C - Area that needs to be prepared for the copying of sent messages, by |
| 353 | * the clearing of the message flags of any previously received messages. |
| 354 | * |
| 355 | * D - Area into which sent messages are to be copied from the remote |
| 356 | * partition's local_msgqueue and then delivered to their intended |
| 357 | * recipients. [ To allow for a multi-message copy, another pointer |
| 358 | * (next_msg_to_pull) has been added to keep track of the next message |
| 359 | * number needing to be copied (pulled). It chases after w_remote_GP.put. |
| 360 | * Any messages lying between w_local_GP.get and next_msg_to_pull have |
| 361 | * been copied and are ready to be delivered. ] |
| 362 | * |
| 363 | * E - Messages that have been copied and delivered, but have not yet been |
| 364 | * acknowledged by the recipient as having been received. |
| 365 | * |
| 366 | * F - Messages that have been acknowledged, but XPC has not yet notified the |
| 367 | * sender that the message was received by its intended recipient. |
| 368 | * This is also an area that needs to be prepared for the allocating of |
| 369 | * new messages, by the clearing of the message flags of the acknowledged |
| 370 | * messages. |
| 371 | */ |
| 372 | struct xpc_channel { |
Dean Nelson | 64d032b | 2008-05-12 14:02:03 -0700 | [diff] [blame] | 373 | short partid; /* ID of remote partition connected */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 374 | spinlock_t lock; /* lock for updating this structure */ |
| 375 | u32 flags; /* general flags */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 376 | |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 377 | enum xp_retval reason; /* reason why channel is disconnect'g */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 378 | int reason_line; /* line# disconnect initiated from */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 379 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 380 | u16 number; /* channel # */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 381 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 382 | u16 msg_size; /* sizeof each msg entry */ |
| 383 | u16 local_nentries; /* #of msg entries in local msg queue */ |
| 384 | u16 remote_nentries; /* #of msg entries in remote msg queue */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 385 | |
| 386 | void *local_msgqueue_base; /* base address of kmalloc'd space */ |
| 387 | struct xpc_msg *local_msgqueue; /* local message queue */ |
| 388 | void *remote_msgqueue_base; /* base address of kmalloc'd space */ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 389 | struct xpc_msg *remote_msgqueue; /* cached copy of remote partition's */ |
| 390 | /* local message queue */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 391 | u64 remote_msgqueue_pa; /* phys addr of remote partition's */ |
| 392 | /* local message queue */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 393 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 394 | atomic_t references; /* #of external references to queues */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 395 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 396 | atomic_t n_on_msg_allocate_wq; /* #on msg allocation wait queue */ |
| 397 | wait_queue_head_t msg_allocate_wq; /* msg allocation wait queue */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 398 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 399 | u8 delayed_IPI_flags; /* IPI flags received, but delayed */ |
| 400 | /* action until channel disconnected */ |
Dean Nelson | e54af72 | 2005-10-25 14:07:43 -0500 | [diff] [blame] | 401 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 402 | /* queue of msg senders who want to be notified when msg received */ |
| 403 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 404 | atomic_t n_to_notify; /* #of msg senders to notify */ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 405 | struct xpc_notify *notify_queue; /* notify queue for messages sent */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 406 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 407 | xpc_channel_func func; /* user's channel function */ |
| 408 | void *key; /* pointer to user's key */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 409 | |
Jes Sorensen | f9e505a | 2006-01-17 12:52:21 -0500 | [diff] [blame] | 410 | struct mutex msg_to_pull_mutex; /* next msg to pull serialization */ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 411 | struct completion wdisconnect_wait; /* wait for channel disconnect */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 412 | |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 413 | struct xpc_openclose_args *local_openclose_args; /* args passed on */ |
| 414 | /* opening or closing of channel */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 415 | |
| 416 | /* various flavors of local and remote Get/Put values */ |
| 417 | |
| 418 | struct xpc_gp *local_GP; /* local Get/Put values */ |
| 419 | struct xpc_gp remote_GP; /* remote Get/Put values */ |
| 420 | struct xpc_gp w_local_GP; /* working local Get/Put values */ |
| 421 | struct xpc_gp w_remote_GP; /* working remote Get/Put values */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 422 | s64 next_msg_to_pull; /* Put value of next msg to pull */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 423 | |
| 424 | /* kthread management related fields */ |
| 425 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 426 | atomic_t kthreads_assigned; /* #of kthreads assigned to channel */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 427 | u32 kthreads_assigned_limit; /* limit on #of kthreads assigned */ |
| 428 | atomic_t kthreads_idle; /* #of kthreads idle waiting for work */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 429 | u32 kthreads_idle_limit; /* limit on #of kthreads idle */ |
| 430 | atomic_t kthreads_active; /* #of kthreads actively working */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 431 | |
| 432 | wait_queue_head_t idle_wq; /* idle kthread wait queue */ |
| 433 | |
| 434 | } ____cacheline_aligned; |
| 435 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 436 | /* struct xpc_channel flags */ |
| 437 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 438 | #define XPC_C_WASCONNECTED 0x00000001 /* channel was connected */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 439 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 440 | #define XPC_C_ROPENREPLY 0x00000002 /* remote open channel reply */ |
| 441 | #define XPC_C_OPENREPLY 0x00000004 /* local open channel reply */ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 442 | #define XPC_C_ROPENREQUEST 0x00000008 /* remote open channel request */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 443 | #define XPC_C_OPENREQUEST 0x00000010 /* local open channel request */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 444 | |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 445 | #define XPC_C_SETUP 0x00000020 /* channel's msgqueues are alloc'd */ |
| 446 | #define XPC_C_CONNECTEDCALLOUT 0x00000040 /* connected callout initiated */ |
Dean Nelson | 4c2cd96 | 2006-02-15 08:02:21 -0600 | [diff] [blame] | 447 | #define XPC_C_CONNECTEDCALLOUT_MADE \ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 448 | 0x00000080 /* connected callout completed */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 449 | #define XPC_C_CONNECTED 0x00000100 /* local channel is connected */ |
| 450 | #define XPC_C_CONNECTING 0x00000200 /* channel is being connected */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 451 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 452 | #define XPC_C_RCLOSEREPLY 0x00000400 /* remote close channel reply */ |
| 453 | #define XPC_C_CLOSEREPLY 0x00000800 /* local close channel reply */ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 454 | #define XPC_C_RCLOSEREQUEST 0x00001000 /* remote close channel request */ |
| 455 | #define XPC_C_CLOSEREQUEST 0x00002000 /* local close channel request */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 456 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 457 | #define XPC_C_DISCONNECTED 0x00004000 /* channel is disconnected */ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 458 | #define XPC_C_DISCONNECTING 0x00008000 /* channel is being disconnected */ |
Dean Nelson | 4c2cd96 | 2006-02-15 08:02:21 -0600 | [diff] [blame] | 459 | #define XPC_C_DISCONNECTINGCALLOUT \ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 460 | 0x00010000 /* disconnecting callout initiated */ |
Dean Nelson | 4c2cd96 | 2006-02-15 08:02:21 -0600 | [diff] [blame] | 461 | #define XPC_C_DISCONNECTINGCALLOUT_MADE \ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 462 | 0x00020000 /* disconnecting callout completed */ |
| 463 | #define XPC_C_WDISCONNECT 0x00040000 /* waiting for channel disconnect */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 464 | |
| 465 | /* |
| 466 | * Manages channels on a partition basis. There is one of these structures |
| 467 | * for each partition (a partition will never utilize the structure that |
| 468 | * represents itself). |
| 469 | */ |
| 470 | struct xpc_partition { |
| 471 | |
| 472 | /* XPC HB infrastructure */ |
| 473 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 474 | u8 remote_rp_version; /* version# of partition's rsvd pg */ |
Dean Nelson | aaa3cd6 | 2008-07-29 22:34:07 -0700 | [diff] [blame^] | 475 | unsigned long remote_rp_stamp; /* time when rsvd pg was initialized */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 476 | u64 remote_rp_pa; /* phys addr of partition's rsvd pg */ |
| 477 | u64 remote_vars_pa; /* phys addr of partition's vars */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 478 | u64 remote_vars_part_pa; /* phys addr of partition's vars part */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 479 | u64 last_heartbeat; /* HB at last read */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 480 | u64 remote_amos_page_pa; /* phys addr of partition's amos page */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 481 | int remote_act_nasid; /* active part's act/deact nasid */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 482 | int remote_act_phys_cpuid; /* active part's act/deact phys cpuid */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 483 | u32 act_IRQ_rcvd; /* IRQs since activation */ |
| 484 | spinlock_t act_lock; /* protect updating of act_state */ |
| 485 | u8 act_state; /* from XPC HB viewpoint */ |
| 486 | u8 remote_vars_version; /* version# of partition's vars */ |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 487 | enum xp_retval reason; /* reason partition is deactivating */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 488 | int reason_line; /* line# deactivation initiated from */ |
| 489 | int reactivate_nasid; /* nasid in partition to reactivate */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 490 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 491 | unsigned long disengage_request_timeout; /* timeout in jiffies */ |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 492 | struct timer_list disengage_request_timer; |
| 493 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 494 | /* XPC infrastructure referencing and teardown control */ |
| 495 | |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 496 | u8 setup_state; /* infrastructure setup state */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 497 | wait_queue_head_t teardown_wq; /* kthread waiting to teardown infra */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 498 | atomic_t references; /* #of references to infrastructure */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 499 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 500 | u8 nchannels; /* #of defined channels supported */ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 501 | atomic_t nchannels_active; /* #of channels that are not DISCONNECTED */ |
| 502 | atomic_t nchannels_engaged; /* #of channels engaged with remote part */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 503 | struct xpc_channel *channels; /* array of channel structures */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 504 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 505 | void *local_GPs_base; /* base address of kmalloc'd space */ |
| 506 | struct xpc_gp *local_GPs; /* local Get/Put values */ |
| 507 | void *remote_GPs_base; /* base address of kmalloc'd space */ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 508 | struct xpc_gp *remote_GPs; /* copy of remote partition's local */ |
| 509 | /* Get/Put values */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 510 | u64 remote_GPs_pa; /* phys address of remote partition's local */ |
| 511 | /* Get/Put values */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 512 | |
| 513 | /* fields used to pass args when opening or closing a channel */ |
| 514 | |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 515 | void *local_openclose_args_base; /* base address of kmalloc'd space */ |
| 516 | struct xpc_openclose_args *local_openclose_args; /* local's args */ |
| 517 | void *remote_openclose_args_base; /* base address of kmalloc'd space */ |
| 518 | struct xpc_openclose_args *remote_openclose_args; /* copy of remote's */ |
| 519 | /* args */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 520 | u64 remote_openclose_args_pa; /* phys addr of remote's args */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 521 | |
| 522 | /* IPI sending, receiving and handling related fields */ |
| 523 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 524 | int remote_IPI_nasid; /* nasid of where to send IPIs */ |
| 525 | int remote_IPI_phys_cpuid; /* phys CPU ID of where to send IPIs */ |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 526 | AMO_t *remote_IPI_amo_va; /* address of remote IPI AMO_t structure */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 527 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 528 | AMO_t *local_IPI_amo_va; /* address of IPI AMO_t structure */ |
| 529 | u64 local_IPI_amo; /* IPI amo flags yet to be handled */ |
| 530 | char IPI_owner[8]; /* IPI owner's name */ |
| 531 | struct timer_list dropped_IPI_timer; /* dropped IPI timer */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 532 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 533 | spinlock_t IPI_lock; /* IPI handler lock */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 534 | |
| 535 | /* channel manager related fields */ |
| 536 | |
| 537 | atomic_t channel_mgr_requests; /* #of requests to activate chan mgr */ |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 538 | wait_queue_head_t channel_mgr_wq; /* channel mgr's wait queue */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 539 | |
| 540 | } ____cacheline_aligned; |
| 541 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 542 | /* struct xpc_partition act_state values (for XPC HB) */ |
| 543 | |
| 544 | #define XPC_P_INACTIVE 0x00 /* partition is not active */ |
| 545 | #define XPC_P_ACTIVATION_REQ 0x01 /* created thread to activate */ |
| 546 | #define XPC_P_ACTIVATING 0x02 /* activation thread started */ |
| 547 | #define XPC_P_ACTIVE 0x03 /* xpc_partition_up() was called */ |
| 548 | #define XPC_P_DEACTIVATING 0x04 /* partition deactivation initiated */ |
| 549 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 550 | #define XPC_DEACTIVATE_PARTITION(_p, _reason) \ |
| 551 | xpc_deactivate_partition(__LINE__, (_p), (_reason)) |
| 552 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 553 | /* struct xpc_partition setup_state values */ |
| 554 | |
| 555 | #define XPC_P_UNSET 0x00 /* infrastructure was never setup */ |
| 556 | #define XPC_P_SETUP 0x01 /* infrastructure is setup */ |
| 557 | #define XPC_P_WTEARDOWN 0x02 /* waiting to teardown infrastructure */ |
| 558 | #define XPC_P_TORNDOWN 0x03 /* infrastructure is torndown */ |
| 559 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 560 | /* |
| 561 | * struct xpc_partition IPI_timer #of seconds to wait before checking for |
| 562 | * dropped IPIs. These occur whenever an IPI amo write doesn't complete until |
| 563 | * after the IPI was received. |
| 564 | */ |
Dean Nelson | e17d416 | 2008-07-29 22:34:06 -0700 | [diff] [blame] | 565 | #define XPC_P_DROPPED_IPI_WAIT_INTERVAL (0.25 * HZ) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 566 | |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 567 | /* number of seconds to wait for other partitions to disengage */ |
Dean Nelson | e54af72 | 2005-10-25 14:07:43 -0500 | [diff] [blame] | 568 | #define XPC_DISENGAGE_REQUEST_DEFAULT_TIMELIMIT 90 |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 569 | |
| 570 | /* interval in seconds to print 'waiting disengagement' messages */ |
| 571 | #define XPC_DISENGAGE_PRINTMSG_INTERVAL 10 |
| 572 | |
Dean Nelson | 64d032b | 2008-05-12 14:02:03 -0700 | [diff] [blame] | 573 | #define XPC_PARTID(_p) ((short)((_p) - &xpc_partitions[0])) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 574 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 575 | /* found in xp_main.c */ |
| 576 | extern struct xpc_registration xpc_registrations[]; |
| 577 | |
Dean Nelson | e54af72 | 2005-10-25 14:07:43 -0500 | [diff] [blame] | 578 | /* found in xpc_main.c */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 579 | extern struct device *xpc_part; |
| 580 | extern struct device *xpc_chan; |
Dean Nelson | e54af72 | 2005-10-25 14:07:43 -0500 | [diff] [blame] | 581 | extern int xpc_disengage_request_timelimit; |
Dean Nelson | 1ecaded | 2006-01-06 09:48:21 -0600 | [diff] [blame] | 582 | extern int xpc_disengage_request_timedout; |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 583 | extern atomic_t xpc_act_IRQ_rcvd; |
| 584 | extern wait_queue_head_t xpc_act_IRQ_wq; |
| 585 | extern void *xpc_heartbeating_to_mask; |
Al Viro | 5dcded1 | 2006-10-08 14:59:19 +0100 | [diff] [blame] | 586 | extern irqreturn_t xpc_notify_IRQ_handler(int, void *); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 587 | extern void xpc_dropped_IPI_check(struct xpc_partition *); |
Dean Nelson | e54af72 | 2005-10-25 14:07:43 -0500 | [diff] [blame] | 588 | extern void xpc_activate_partition(struct xpc_partition *); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 589 | extern void xpc_activate_kthreads(struct xpc_channel *, int); |
Dean Nelson | a460ef8 | 2006-11-22 08:25:00 -0600 | [diff] [blame] | 590 | extern void xpc_create_kthreads(struct xpc_channel *, int, int); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 591 | extern void xpc_disconnect_wait(int); |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 592 | extern enum xp_retval (*xpc_rsvd_page_init) (struct xpc_rsvd_page *); |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 593 | extern void (*xpc_heartbeat_init) (void); |
| 594 | extern void (*xpc_heartbeat_exit) (void); |
| 595 | extern void (*xpc_increment_heartbeat) (void); |
| 596 | extern void (*xpc_offline_heartbeat) (void); |
| 597 | extern void (*xpc_online_heartbeat) (void); |
| 598 | extern void (*xpc_check_remote_hb) (void); |
Dean Nelson | e17d416 | 2008-07-29 22:34:06 -0700 | [diff] [blame] | 599 | extern enum xp_retval (*xpc_make_first_contact) (struct xpc_partition *); |
| 600 | extern u64 (*xpc_get_IPI_flags) (struct xpc_partition *); |
| 601 | extern struct xpc_msg *(*xpc_get_deliverable_msg) (struct xpc_channel *); |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 602 | extern void (*xpc_initiate_partition_activation) (struct xpc_rsvd_page *, u64, |
| 603 | int); |
| 604 | extern void (*xpc_process_act_IRQ_rcvd) (int); |
Dean Nelson | e17d416 | 2008-07-29 22:34:06 -0700 | [diff] [blame] | 605 | extern enum xp_retval (*xpc_setup_infrastructure) (struct xpc_partition *); |
| 606 | extern void (*xpc_teardown_infrastructure) (struct xpc_partition *); |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 607 | extern void (*xpc_mark_partition_engaged) (struct xpc_partition *); |
| 608 | extern void (*xpc_mark_partition_disengaged) (struct xpc_partition *); |
| 609 | extern void (*xpc_request_partition_disengage) (struct xpc_partition *); |
| 610 | extern void (*xpc_cancel_partition_disengage_request) (struct xpc_partition *); |
| 611 | extern u64 (*xpc_partition_engaged) (u64); |
| 612 | extern u64 (*xpc_partition_disengage_requested) (u64);; |
| 613 | extern void (*xpc_clear_partition_engaged) (u64); |
| 614 | extern void (*xpc_clear_partition_disengage_request) (u64); |
| 615 | |
| 616 | extern void (*xpc_IPI_send_local_activate) (int); |
| 617 | extern void (*xpc_IPI_send_activated) (struct xpc_partition *); |
| 618 | extern void (*xpc_IPI_send_local_reactivate) (int); |
| 619 | extern void (*xpc_IPI_send_disengage) (struct xpc_partition *); |
| 620 | |
| 621 | extern void (*xpc_IPI_send_closerequest) (struct xpc_channel *, |
| 622 | unsigned long *); |
| 623 | extern void (*xpc_IPI_send_closereply) (struct xpc_channel *, unsigned long *); |
| 624 | extern void (*xpc_IPI_send_openrequest) (struct xpc_channel *, unsigned long *); |
| 625 | extern void (*xpc_IPI_send_openreply) (struct xpc_channel *, unsigned long *); |
| 626 | |
| 627 | extern enum xp_retval (*xpc_allocate_msg) (struct xpc_channel *, u32, |
| 628 | struct xpc_msg **); |
| 629 | extern enum xp_retval (*xpc_send_msg) (struct xpc_channel *, struct xpc_msg *, |
| 630 | u8, xpc_notify_func, void *); |
| 631 | extern void (*xpc_received_msg) (struct xpc_channel *, struct xpc_msg *); |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 632 | |
| 633 | /* found in xpc_sn2.c */ |
| 634 | extern void xpc_init_sn2(void); |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 635 | |
| 636 | /* found in xpc_uv.c */ |
| 637 | extern void xpc_init_uv(void); |
| 638 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 639 | /* found in xpc_partition.c */ |
| 640 | extern int xpc_exiting; |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 641 | extern int xp_nasid_mask_words; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 642 | extern struct xpc_rsvd_page *xpc_rsvd_page; |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 643 | extern u64 *xpc_mach_nasids; |
Dean Nelson | bc63d38 | 2008-07-29 22:34:04 -0700 | [diff] [blame] | 644 | extern struct xpc_partition *xpc_partitions; |
Dean Nelson | 7682a4c | 2006-08-08 15:03:29 -0500 | [diff] [blame] | 645 | extern char *xpc_remote_copy_buffer; |
| 646 | extern void *xpc_remote_copy_buffer_base; |
| 647 | extern void *xpc_kmalloc_cacheline_aligned(size_t, gfp_t, void **); |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 648 | extern struct xpc_rsvd_page *xpc_setup_rsvd_page(void); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 649 | extern void xpc_allow_IPI_ops(void); |
| 650 | extern void xpc_restrict_IPI_ops(void); |
| 651 | extern int xpc_identify_act_IRQ_sender(void); |
Dean Nelson | a607c389 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 652 | extern int xpc_partition_disengaged(struct xpc_partition *); |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 653 | extern enum xp_retval xpc_mark_partition_active(struct xpc_partition *); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 654 | extern void xpc_mark_partition_inactive(struct xpc_partition *); |
| 655 | extern void xpc_discovery(void); |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 656 | extern enum xp_retval xpc_get_remote_rp(int, u64 *, struct xpc_rsvd_page *, |
| 657 | u64 *); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 658 | extern void xpc_deactivate_partition(const int, struct xpc_partition *, |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 659 | enum xp_retval); |
Dean Nelson | 64d032b | 2008-05-12 14:02:03 -0700 | [diff] [blame] | 660 | extern enum xp_retval xpc_initiate_partid_to_nasids(short, void *); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 661 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 662 | /* found in xpc_channel.c */ |
Dean Nelson | e17d416 | 2008-07-29 22:34:06 -0700 | [diff] [blame] | 663 | extern void *xpc_kzalloc_cacheline_aligned(size_t, gfp_t, void **); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 664 | extern void xpc_initiate_connect(int); |
| 665 | extern void xpc_initiate_disconnect(int); |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 666 | extern enum xp_retval xpc_allocate_msg_wait(struct xpc_channel *); |
Dean Nelson | 64d032b | 2008-05-12 14:02:03 -0700 | [diff] [blame] | 667 | extern enum xp_retval xpc_initiate_allocate(short, int, u32, void **); |
| 668 | extern enum xp_retval xpc_initiate_send(short, int, void *); |
| 669 | extern enum xp_retval xpc_initiate_send_notify(short, int, void *, |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 670 | xpc_notify_func, void *); |
Dean Nelson | 64d032b | 2008-05-12 14:02:03 -0700 | [diff] [blame] | 671 | extern void xpc_initiate_received(short, int, void *); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 672 | extern void xpc_process_channel_activity(struct xpc_partition *); |
| 673 | extern void xpc_connected_callout(struct xpc_channel *); |
| 674 | extern void xpc_deliver_msg(struct xpc_channel *); |
| 675 | extern void xpc_disconnect_channel(const int, struct xpc_channel *, |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 676 | enum xp_retval, unsigned long *); |
| 677 | extern void xpc_disconnect_callout(struct xpc_channel *, enum xp_retval); |
| 678 | extern void xpc_partition_going_down(struct xpc_partition *, enum xp_retval); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 679 | |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 680 | static inline int |
| 681 | xpc_hb_allowed(short partid, void *heartbeating_to_mask) |
| 682 | { |
| 683 | return test_bit(partid, heartbeating_to_mask); |
| 684 | } |
| 685 | |
| 686 | static inline int |
| 687 | xpc_any_hbs_allowed(void) |
| 688 | { |
| 689 | DBUG_ON(xpc_heartbeating_to_mask == NULL); |
| 690 | return !bitmap_empty(xpc_heartbeating_to_mask, xp_max_npartitions); |
| 691 | } |
| 692 | |
| 693 | static inline void |
| 694 | xpc_allow_hb(short partid) |
| 695 | { |
| 696 | DBUG_ON(xpc_heartbeating_to_mask == NULL); |
| 697 | set_bit(partid, xpc_heartbeating_to_mask); |
| 698 | } |
| 699 | |
| 700 | static inline void |
| 701 | xpc_disallow_hb(short partid) |
| 702 | { |
| 703 | DBUG_ON(xpc_heartbeating_to_mask == NULL); |
| 704 | clear_bit(partid, xpc_heartbeating_to_mask); |
| 705 | } |
| 706 | |
| 707 | static inline void |
| 708 | xpc_disallow_all_hbs(void) |
| 709 | { |
| 710 | DBUG_ON(xpc_heartbeating_to_mask == NULL); |
| 711 | bitmap_zero(xpc_heartbeating_to_mask, xp_max_npartitions); |
| 712 | } |
| 713 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 714 | static inline void |
| 715 | xpc_wakeup_channel_mgr(struct xpc_partition *part) |
| 716 | { |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 717 | if (atomic_inc_return(&part->channel_mgr_requests) == 1) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 718 | wake_up(&part->channel_mgr_wq); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 719 | } |
| 720 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 721 | /* |
| 722 | * These next two inlines are used to keep us from tearing down a channel's |
| 723 | * msg queues while a thread may be referencing them. |
| 724 | */ |
| 725 | static inline void |
| 726 | xpc_msgqueue_ref(struct xpc_channel *ch) |
| 727 | { |
| 728 | atomic_inc(&ch->references); |
| 729 | } |
| 730 | |
| 731 | static inline void |
| 732 | xpc_msgqueue_deref(struct xpc_channel *ch) |
| 733 | { |
| 734 | s32 refs = atomic_dec_return(&ch->references); |
| 735 | |
| 736 | DBUG_ON(refs < 0); |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 737 | if (refs == 0) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 738 | xpc_wakeup_channel_mgr(&xpc_partitions[ch->partid]); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 739 | } |
| 740 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 741 | #define XPC_DISCONNECT_CHANNEL(_ch, _reason, _irqflgs) \ |
| 742 | xpc_disconnect_channel(__LINE__, _ch, _reason, _irqflgs) |
| 743 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 744 | /* |
| 745 | * These two inlines are used to keep us from tearing down a partition's |
| 746 | * setup infrastructure while a thread may be referencing it. |
| 747 | */ |
| 748 | static inline void |
| 749 | xpc_part_deref(struct xpc_partition *part) |
| 750 | { |
| 751 | s32 refs = atomic_dec_return(&part->references); |
| 752 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 753 | DBUG_ON(refs < 0); |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 754 | if (refs == 0 && part->setup_state == XPC_P_WTEARDOWN) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 755 | wake_up(&part->teardown_wq); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 756 | } |
| 757 | |
| 758 | static inline int |
| 759 | xpc_part_ref(struct xpc_partition *part) |
| 760 | { |
| 761 | int setup; |
| 762 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 763 | atomic_inc(&part->references); |
| 764 | setup = (part->setup_state == XPC_P_SETUP); |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 765 | if (!setup) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 766 | xpc_part_deref(part); |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 767 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 768 | return setup; |
| 769 | } |
| 770 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 771 | /* |
| 772 | * The following macro is to be used for the setting of the reason and |
| 773 | * reason_line fields in both the struct xpc_channel and struct xpc_partition |
| 774 | * structures. |
| 775 | */ |
| 776 | #define XPC_SET_REASON(_p, _reason, _line) \ |
| 777 | { \ |
| 778 | (_p)->reason = _reason; \ |
| 779 | (_p)->reason_line = _line; \ |
| 780 | } |
| 781 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 782 | /* |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 783 | * The sending and receiving of IPIs includes the setting of an >>>AMO variable |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 784 | * to indicate the reason the IPI was sent. The 64-bit variable is divided |
| 785 | * up into eight bytes, ordered from right to left. Byte zero pertains to |
| 786 | * channel 0, byte one to channel 1, and so on. Each byte is described by |
| 787 | * the following IPI flags. |
| 788 | */ |
| 789 | |
| 790 | #define XPC_IPI_CLOSEREQUEST 0x01 |
| 791 | #define XPC_IPI_CLOSEREPLY 0x02 |
| 792 | #define XPC_IPI_OPENREQUEST 0x04 |
| 793 | #define XPC_IPI_OPENREPLY 0x08 |
| 794 | #define XPC_IPI_MSGREQUEST 0x10 |
| 795 | |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 796 | /* given an >>>AMO variable and a channel#, get its associated IPI flags */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 797 | #define XPC_GET_IPI_FLAGS(_amo, _c) ((u8) (((_amo) >> ((_c) * 8)) & 0xff)) |
Dean Nelson | e54af72 | 2005-10-25 14:07:43 -0500 | [diff] [blame] | 798 | #define XPC_SET_IPI_FLAGS(_amo, _c, _f) (_amo) |= ((u64) (_f) << ((_c) * 8)) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 799 | |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 800 | #define XPC_ANY_OPENCLOSE_IPI_FLAGS_SET(_amo) ((_amo) & 0x0f0f0f0f0f0f0f0fUL) |
| 801 | #define XPC_ANY_MSG_IPI_FLAGS_SET(_amo) ((_amo) & 0x1010101010101010UL) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 802 | |
Dean Nelson | 45d9ca4 | 2008-04-22 14:46:56 -0500 | [diff] [blame] | 803 | #endif /* _DRIVERS_MISC_SGIXP_XPC_H */ |