Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1 | /* |
| 2 | * SPU file system |
| 3 | * |
| 4 | * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 |
| 5 | * |
| 6 | * Author: Arnd Bergmann <arndb@de.ibm.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2, or (at your option) |
| 11 | * any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 | */ |
| 22 | #ifndef SPUFS_H |
| 23 | #define SPUFS_H |
| 24 | |
| 25 | #include <linux/kref.h> |
Christoph Hellwig | 650f8b0 | 2007-02-13 21:36:50 +0100 | [diff] [blame] | 26 | #include <linux/mutex.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 27 | #include <linux/spinlock.h> |
| 28 | #include <linux/fs.h> |
Christoph Hellwig | ea1ae59 | 2007-06-29 10:57:56 +1000 | [diff] [blame] | 29 | #include <linux/cpumask.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 30 | |
| 31 | #include <asm/spu.h> |
Mark Nutter | 5473af0 | 2005-11-15 15:53:49 -0500 | [diff] [blame] | 32 | #include <asm/spu_csa.h> |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 33 | #include <asm/spu_info.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 34 | |
Jeremy Kerr | 87ff609 | 2008-07-01 10:22:50 +1000 | [diff] [blame] | 35 | #define SPUFS_PS_MAP_SIZE 0x20000 |
| 36 | #define SPUFS_MFC_MAP_SIZE 0x1000 |
| 37 | #define SPUFS_CNTL_MAP_SIZE 0x1000 |
Jeremy Kerr | 87ff609 | 2008-07-01 10:22:50 +1000 | [diff] [blame] | 38 | #define SPUFS_SIGNAL_MAP_SIZE PAGE_SIZE |
| 39 | #define SPUFS_MSS_MAP_SIZE 0x1000 |
| 40 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 41 | /* The magic number for our file system */ |
| 42 | enum { |
| 43 | SPUFS_MAGIC = 0x23c9b64e, |
| 44 | }; |
| 45 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 46 | struct spu_context_ops; |
Arnd Bergmann | 6263203 | 2006-10-04 17:26:15 +0200 | [diff] [blame] | 47 | struct spu_gang; |
| 48 | |
Bob Nelson | 36aaccc | 2007-07-20 21:39:52 +0200 | [diff] [blame] | 49 | /* ctx->sched_flags */ |
| 50 | enum { |
| 51 | SPU_SCHED_NOTIFY_ACTIVE, |
Christoph Hellwig | b2c863b | 2007-07-23 18:43:53 -0700 | [diff] [blame] | 52 | SPU_SCHED_WAS_ACTIVE, /* was active upon spu_acquire_saved() */ |
Jeremy Kerr | ce7c191 | 2008-03-04 20:17:02 +1100 | [diff] [blame] | 53 | SPU_SCHED_SPU_RUN, /* context is within spu_run */ |
Bob Nelson | 36aaccc | 2007-07-20 21:39:52 +0200 | [diff] [blame] | 54 | }; |
| 55 | |
Christoph Hellwig | 5158e9b | 2008-04-29 17:08:38 +1000 | [diff] [blame] | 56 | enum { |
| 57 | SWITCH_LOG_BUFSIZE = 4096, |
| 58 | }; |
| 59 | |
| 60 | enum { |
| 61 | SWITCH_LOG_START, |
| 62 | SWITCH_LOG_STOP, |
| 63 | SWITCH_LOG_EXIT, |
| 64 | }; |
| 65 | |
| 66 | struct switch_log { |
Christoph Hellwig | 5158e9b | 2008-04-29 17:08:38 +1000 | [diff] [blame] | 67 | wait_queue_head_t wait; |
| 68 | unsigned long head; |
| 69 | unsigned long tail; |
| 70 | struct switch_log_entry { |
| 71 | struct timespec tstamp; |
| 72 | s32 spu_id; |
| 73 | u32 type; |
| 74 | u32 val; |
| 75 | u64 timebase; |
| 76 | } log[]; |
| 77 | }; |
| 78 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 79 | struct spu_context { |
| 80 | struct spu *spu; /* pointer to a physical SPU */ |
Mark Nutter | 5473af0 | 2005-11-15 15:53:49 -0500 | [diff] [blame] | 81 | struct spu_state csa; /* SPU context save area. */ |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 82 | spinlock_t mmio_lock; /* protects mmio access */ |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 83 | struct address_space *local_store; /* local store mapping. */ |
| 84 | struct address_space *mfc; /* 'mfc' area mappings. */ |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 85 | struct address_space *cntl; /* 'control' area mappings. */ |
| 86 | struct address_space *signal1; /* 'signal1' area mappings. */ |
| 87 | struct address_space *signal2; /* 'signal2' area mappings. */ |
| 88 | struct address_space *mss; /* 'mss' area mappings. */ |
| 89 | struct address_space *psmap; /* 'psmap' area mappings. */ |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 90 | struct mutex mapping_lock; |
Arnd Bergmann | 8676727 | 2006-10-04 17:26:21 +0200 | [diff] [blame] | 91 | u64 object_id; /* user space pointer for oprofile */ |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 92 | |
| 93 | enum { SPU_STATE_RUNNABLE, SPU_STATE_SAVED } state; |
Christoph Hellwig | 650f8b0 | 2007-02-13 21:36:50 +0100 | [diff] [blame] | 94 | struct mutex state_mutex; |
Christoph Hellwig | e45d48a3 | 2007-04-23 21:08:17 +0200 | [diff] [blame] | 95 | struct mutex run_mutex; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 96 | |
| 97 | struct mm_struct *owner; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 98 | |
| 99 | struct kref kref; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 100 | wait_queue_head_t ibox_wq; |
| 101 | wait_queue_head_t wbox_wq; |
Arnd Bergmann | 5110459 | 2005-12-05 22:52:25 -0500 | [diff] [blame] | 102 | wait_queue_head_t stop_wq; |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 103 | wait_queue_head_t mfc_wq; |
Arnd Bergmann | 33bfd7a | 2007-12-20 16:39:59 +0900 | [diff] [blame] | 104 | wait_queue_head_t run_wq; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 105 | struct fasync_struct *ibox_fasync; |
| 106 | struct fasync_struct *wbox_fasync; |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 107 | struct fasync_struct *mfc_fasync; |
| 108 | u32 tagwait; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 109 | struct spu_context_ops *ops; |
Arnd Bergmann | 2a911f0 | 2005-12-05 22:52:26 -0500 | [diff] [blame] | 110 | struct work_struct reap_work; |
Arnd Bergmann | 9add11d | 2006-10-04 17:26:14 +0200 | [diff] [blame] | 111 | unsigned long flags; |
| 112 | unsigned long event_return; |
Arnd Bergmann | 6263203 | 2006-10-04 17:26:15 +0200 | [diff] [blame] | 113 | |
| 114 | struct list_head gang_list; |
| 115 | struct spu_gang *gang; |
Bob Nelson | 1474855 | 2007-07-20 21:39:53 +0200 | [diff] [blame] | 116 | struct kref *prof_priv_kref; |
| 117 | void ( * prof_priv_release) (struct kref *kref); |
Christoph Hellwig | 8389998 | 2007-02-13 21:54:22 +0100 | [diff] [blame] | 118 | |
Christoph Hellwig | 476273a | 2007-06-29 10:58:01 +1000 | [diff] [blame] | 119 | /* owner thread */ |
| 120 | pid_t tid; |
| 121 | |
Christoph Hellwig | 8389998 | 2007-02-13 21:54:22 +0100 | [diff] [blame] | 122 | /* scheduler fields */ |
Jeremy Kerr | 7022543 | 2007-06-29 10:58:00 +1000 | [diff] [blame] | 123 | struct list_head rq; |
Christoph Hellwig | 3790180 | 2007-06-29 10:57:51 +1000 | [diff] [blame] | 124 | unsigned int time_slice; |
Christoph Hellwig | 26bec67 | 2007-02-13 21:54:24 +0100 | [diff] [blame] | 125 | unsigned long sched_flags; |
Christoph Hellwig | ea1ae59 | 2007-06-29 10:57:56 +1000 | [diff] [blame] | 126 | cpumask_t cpus_allowed; |
Christoph Hellwig | 2eb1b12 | 2007-02-13 21:54:29 +0100 | [diff] [blame] | 127 | int policy; |
Christoph Hellwig | 8389998 | 2007-02-13 21:54:22 +0100 | [diff] [blame] | 128 | int prio; |
Luke Browning | 7a21420 | 2008-04-28 14:32:34 +1000 | [diff] [blame] | 129 | int last_ran; |
Christoph Hellwig | e9f8a0b | 2007-06-29 10:58:03 +1000 | [diff] [blame] | 130 | |
| 131 | /* statistics */ |
| 132 | struct { |
| 133 | /* updates protected by ctx->state_mutex */ |
Andre Detsch | 27ec41d | 2007-07-20 21:39:33 +0200 | [diff] [blame] | 134 | enum spu_utilization_state util_state; |
| 135 | unsigned long long tstamp; /* time of last state switch */ |
| 136 | unsigned long long times[SPU_UTIL_MAX]; |
Christoph Hellwig | e9f8a0b | 2007-06-29 10:58:03 +1000 | [diff] [blame] | 137 | unsigned long long vol_ctx_switch; |
| 138 | unsigned long long invol_ctx_switch; |
| 139 | unsigned long long min_flt; |
| 140 | unsigned long long maj_flt; |
| 141 | unsigned long long hash_flt; |
| 142 | unsigned long long slb_flt; |
| 143 | unsigned long long slb_flt_base; /* # at last ctx switch */ |
| 144 | unsigned long long class2_intr; |
| 145 | unsigned long long class2_intr_base; /* # at last ctx switch */ |
| 146 | unsigned long long libassist; |
| 147 | } stats; |
Arnd Bergmann | 8e68e2f | 2007-07-20 21:39:47 +0200 | [diff] [blame] | 148 | |
Christoph Hellwig | 5158e9b | 2008-04-29 17:08:38 +1000 | [diff] [blame] | 149 | /* context switch log */ |
| 150 | struct switch_log *switch_log; |
| 151 | |
Arnd Bergmann | 8e68e2f | 2007-07-20 21:39:47 +0200 | [diff] [blame] | 152 | struct list_head aff_list; |
| 153 | int aff_head; |
Arnd Bergmann | c5fc8d2 | 2007-07-20 21:39:48 +0200 | [diff] [blame] | 154 | int aff_offset; |
Arnd Bergmann | 6263203 | 2006-10-04 17:26:15 +0200 | [diff] [blame] | 155 | }; |
| 156 | |
| 157 | struct spu_gang { |
| 158 | struct list_head list; |
| 159 | struct mutex mutex; |
| 160 | struct kref kref; |
| 161 | int contexts; |
Arnd Bergmann | 8e68e2f | 2007-07-20 21:39:47 +0200 | [diff] [blame] | 162 | |
| 163 | struct spu_context *aff_ref_ctx; |
| 164 | struct list_head aff_list_head; |
| 165 | struct mutex aff_mutex; |
| 166 | int aff_flags; |
Arnd Bergmann | c5fc8d2 | 2007-07-20 21:39:48 +0200 | [diff] [blame] | 167 | struct spu *aff_ref_spu; |
| 168 | atomic_t aff_sched_count; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 169 | }; |
| 170 | |
Arnd Bergmann | 8e68e2f | 2007-07-20 21:39:47 +0200 | [diff] [blame] | 171 | /* Flag bits for spu_gang aff_flags */ |
| 172 | #define AFF_OFFSETS_SET 1 |
| 173 | #define AFF_MERGED 2 |
| 174 | |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 175 | struct mfc_dma_command { |
| 176 | int32_t pad; /* reserved */ |
| 177 | uint32_t lsa; /* local storage address */ |
| 178 | uint64_t ea; /* effective address */ |
| 179 | uint16_t size; /* transfer size */ |
| 180 | uint16_t tag; /* command tag */ |
| 181 | uint16_t class; /* class ID */ |
| 182 | uint16_t cmd; /* command opcode */ |
| 183 | }; |
| 184 | |
| 185 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 186 | /* SPU context query/set operations. */ |
| 187 | struct spu_context_ops { |
| 188 | int (*mbox_read) (struct spu_context * ctx, u32 * data); |
| 189 | u32(*mbox_stat_read) (struct spu_context * ctx); |
Arnd Bergmann | 3a843d7 | 2005-12-05 22:52:27 -0500 | [diff] [blame] | 190 | unsigned int (*mbox_stat_poll)(struct spu_context *ctx, |
| 191 | unsigned int events); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 192 | int (*ibox_read) (struct spu_context * ctx, u32 * data); |
| 193 | int (*wbox_write) (struct spu_context * ctx, u32 data); |
| 194 | u32(*signal1_read) (struct spu_context * ctx); |
| 195 | void (*signal1_write) (struct spu_context * ctx, u32 data); |
| 196 | u32(*signal2_read) (struct spu_context * ctx); |
| 197 | void (*signal2_write) (struct spu_context * ctx, u32 data); |
| 198 | void (*signal1_type_set) (struct spu_context * ctx, u64 val); |
| 199 | u64(*signal1_type_get) (struct spu_context * ctx); |
| 200 | void (*signal2_type_set) (struct spu_context * ctx, u64 val); |
| 201 | u64(*signal2_type_get) (struct spu_context * ctx); |
| 202 | u32(*npc_read) (struct spu_context * ctx); |
| 203 | void (*npc_write) (struct spu_context * ctx, u32 data); |
| 204 | u32(*status_read) (struct spu_context * ctx); |
| 205 | char*(*get_ls) (struct spu_context * ctx); |
Luke Browning | cc210b3 | 2007-12-20 16:39:59 +0900 | [diff] [blame] | 206 | void (*privcntl_write) (struct spu_context *ctx, u64 data); |
Jeremy Kerr | 3960c26 | 2006-11-20 18:45:09 +0100 | [diff] [blame] | 207 | u32 (*runcntl_read) (struct spu_context * ctx); |
Arnd Bergmann | 5110459 | 2005-12-05 22:52:25 -0500 | [diff] [blame] | 208 | void (*runcntl_write) (struct spu_context * ctx, u32 data); |
Masato Noguchi | c25620d | 2007-12-05 13:49:31 +1100 | [diff] [blame] | 209 | void (*runcntl_stop) (struct spu_context * ctx); |
Arnd Bergmann | ee2d734 | 2006-11-20 18:45:08 +0100 | [diff] [blame] | 210 | void (*master_start) (struct spu_context * ctx); |
| 211 | void (*master_stop) (struct spu_context * ctx); |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 212 | int (*set_mfc_query)(struct spu_context * ctx, u32 mask, u32 mode); |
| 213 | u32 (*read_mfc_tagstatus)(struct spu_context * ctx); |
| 214 | u32 (*get_mfc_free_elements)(struct spu_context *ctx); |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 215 | int (*send_mfc_command)(struct spu_context * ctx, |
| 216 | struct mfc_dma_command * cmd); |
| 217 | void (*dma_info_read) (struct spu_context * ctx, |
| 218 | struct spu_dma_info * info); |
| 219 | void (*proxydma_info_read) (struct spu_context * ctx, |
| 220 | struct spu_proxydma_info * info); |
Arnd Bergmann | 57dace2 | 2007-04-23 21:08:15 +0200 | [diff] [blame] | 221 | void (*restart_dma)(struct spu_context *ctx); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 222 | }; |
| 223 | |
| 224 | extern struct spu_context_ops spu_hw_ops; |
| 225 | extern struct spu_context_ops spu_backing_ops; |
| 226 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 227 | struct spufs_inode_info { |
| 228 | struct spu_context *i_ctx; |
Arnd Bergmann | 6263203 | 2006-10-04 17:26:15 +0200 | [diff] [blame] | 229 | struct spu_gang *i_gang; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 230 | struct inode vfs_inode; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 231 | int i_openers; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 232 | }; |
| 233 | #define SPUFS_I(inode) \ |
| 234 | container_of(inode, struct spufs_inode_info, vfs_inode) |
| 235 | |
Jeremy Kerr | 23d893f | 2008-06-30 12:17:28 +1000 | [diff] [blame] | 236 | struct spufs_tree_descr { |
| 237 | const char *name; |
| 238 | const struct file_operations *ops; |
Al Viro | c6684b2 | 2011-07-26 04:47:14 -0400 | [diff] [blame] | 239 | umode_t mode; |
Jeremy Kerr | 23d893f | 2008-06-30 12:17:28 +1000 | [diff] [blame] | 240 | size_t size; |
| 241 | }; |
| 242 | |
Jeremy Kerr | 7425464 | 2009-02-17 11:44:14 +1100 | [diff] [blame] | 243 | extern const struct spufs_tree_descr spufs_dir_contents[]; |
| 244 | extern const struct spufs_tree_descr spufs_dir_nosched_contents[]; |
| 245 | extern const struct spufs_tree_descr spufs_dir_debug_contents[]; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 246 | |
| 247 | /* system call implementation */ |
Jeremy Kerr | 98f0697 | 2007-09-19 14:38:12 +1000 | [diff] [blame] | 248 | extern struct spufs_calls spufs_calls; |
Al Viro | cdc3d56 | 2013-10-05 22:24:29 -0400 | [diff] [blame] | 249 | struct coredump_params; |
Jeremy Kerr | 50af32a | 2007-07-20 21:39:42 +0200 | [diff] [blame] | 250 | long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *status); |
Al Viro | 1ba1068 | 2011-06-26 11:54:58 -0400 | [diff] [blame] | 251 | long spufs_create(struct path *nd, struct dentry *dentry, unsigned int flags, |
Al Viro | c6684b2 | 2011-07-26 04:47:14 -0400 | [diff] [blame] | 252 | umode_t mode, struct file *filp); |
Michael Ellerman | 48cad41 | 2007-09-19 14:38:12 +1000 | [diff] [blame] | 253 | /* ELF coredump callbacks for writing SPU ELF notes */ |
| 254 | extern int spufs_coredump_extra_notes_size(void); |
Al Viro | cdc3d56 | 2013-10-05 22:24:29 -0400 | [diff] [blame] | 255 | extern int spufs_coredump_extra_notes_write(struct coredump_params *cprm); |
Michael Ellerman | 48cad41 | 2007-09-19 14:38:12 +1000 | [diff] [blame] | 256 | |
Arjan van de Ven | 9c2e08c | 2007-02-12 00:55:37 -0800 | [diff] [blame] | 257 | extern const struct file_operations spufs_context_fops; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 258 | |
Arnd Bergmann | 6263203 | 2006-10-04 17:26:15 +0200 | [diff] [blame] | 259 | /* gang management */ |
| 260 | struct spu_gang *alloc_spu_gang(void); |
| 261 | struct spu_gang *get_spu_gang(struct spu_gang *gang); |
| 262 | int put_spu_gang(struct spu_gang *gang); |
| 263 | void spu_gang_remove_ctx(struct spu_gang *gang, struct spu_context *ctx); |
| 264 | void spu_gang_add_ctx(struct spu_gang *gang, struct spu_context *ctx); |
| 265 | |
Arnd Bergmann | 57dace2 | 2007-04-23 21:08:15 +0200 | [diff] [blame] | 266 | /* fault handling */ |
| 267 | int spufs_handle_class1(struct spu_context *ctx); |
Jeremy Kerr | d6ad39b | 2007-12-20 16:39:59 +0900 | [diff] [blame] | 268 | int spufs_handle_class0(struct spu_context *ctx); |
Arnd Bergmann | 57dace2 | 2007-04-23 21:08:15 +0200 | [diff] [blame] | 269 | |
Arnd Bergmann | c5fc8d2 | 2007-07-20 21:39:48 +0200 | [diff] [blame] | 270 | /* affinity */ |
| 271 | struct spu *affinity_check(struct spu_context *ctx); |
| 272 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 273 | /* context management */ |
Christoph Hellwig | 65de66f | 2007-06-29 10:58:02 +1000 | [diff] [blame] | 274 | extern atomic_t nr_spu_contexts; |
Christoph Hellwig | c9101bd | 2007-12-20 16:39:59 +0900 | [diff] [blame] | 275 | static inline int __must_check spu_acquire(struct spu_context *ctx) |
Christoph Hellwig | 6a0641e5 | 2007-02-13 21:54:21 +0100 | [diff] [blame] | 276 | { |
Christoph Hellwig | c9101bd | 2007-12-20 16:39:59 +0900 | [diff] [blame] | 277 | return mutex_lock_interruptible(&ctx->state_mutex); |
Christoph Hellwig | 6a0641e5 | 2007-02-13 21:54:21 +0100 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | static inline void spu_release(struct spu_context *ctx) |
| 281 | { |
| 282 | mutex_unlock(&ctx->state_mutex); |
| 283 | } |
| 284 | |
Arnd Bergmann | 6263203 | 2006-10-04 17:26:15 +0200 | [diff] [blame] | 285 | struct spu_context * alloc_spu_context(struct spu_gang *gang); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 286 | void destroy_spu_context(struct kref *kref); |
| 287 | struct spu_context * get_spu_context(struct spu_context *ctx); |
| 288 | int put_spu_context(struct spu_context *ctx); |
Arnd Bergmann | 5110459 | 2005-12-05 22:52:25 -0500 | [diff] [blame] | 289 | void spu_unmap_mappings(struct spu_context *ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 290 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 291 | void spu_forget(struct spu_context *ctx); |
Christoph Hellwig | c9101bd | 2007-12-20 16:39:59 +0900 | [diff] [blame] | 292 | int __must_check spu_acquire_saved(struct spu_context *ctx); |
Christoph Hellwig | 27b1ea0 | 2007-07-20 21:39:34 +0200 | [diff] [blame] | 293 | void spu_release_saved(struct spu_context *ctx); |
Christoph Hellwig | 50b520d | 2007-03-10 00:05:36 +0100 | [diff] [blame] | 294 | |
Luke Browning | e65c2f6 | 2007-12-20 16:39:59 +0900 | [diff] [blame] | 295 | int spu_stopped(struct spu_context *ctx, u32 * stat); |
| 296 | void spu_del_from_rq(struct spu_context *ctx); |
Christoph Hellwig | 26bec67 | 2007-02-13 21:54:24 +0100 | [diff] [blame] | 297 | int spu_activate(struct spu_context *ctx, unsigned long flags); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 298 | void spu_deactivate(struct spu_context *ctx); |
| 299 | void spu_yield(struct spu_context *ctx); |
Bob Nelson | 36aaccc | 2007-07-20 21:39:52 +0200 | [diff] [blame] | 300 | void spu_switch_notify(struct spu *spu, struct spu_context *ctx); |
Christoph Hellwig | 5158e9b | 2008-04-29 17:08:38 +1000 | [diff] [blame] | 301 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
| 302 | u32 type, u32 val); |
Christoph Hellwig | fe443ef | 2007-06-29 10:57:52 +1000 | [diff] [blame] | 303 | void spu_set_timeslice(struct spu_context *ctx); |
Christoph Hellwig | 2cf2b3b | 2007-06-29 10:57:55 +1000 | [diff] [blame] | 304 | void spu_update_sched_info(struct spu_context *ctx); |
| 305 | void __spu_update_sched_info(struct spu_context *ctx); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 306 | int __init spu_sched_init(void); |
Sebastian Siewior | d145031 | 2007-07-20 21:39:29 +0200 | [diff] [blame] | 307 | void spu_sched_exit(void); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 308 | |
Jeremy Kerr | c6730ed | 2006-11-20 18:45:10 +0100 | [diff] [blame] | 309 | extern char *isolated_loader; |
| 310 | |
Arnd Bergmann | ce8ab85 | 2006-01-04 20:31:29 +0100 | [diff] [blame] | 311 | /* |
| 312 | * spufs_wait |
Jeremy Kerr | 7022543 | 2007-06-29 10:58:00 +1000 | [diff] [blame] | 313 | * Same as wait_event_interruptible(), except that here |
Arnd Bergmann | ce8ab85 | 2006-01-04 20:31:29 +0100 | [diff] [blame] | 314 | * we need to call spu_release(ctx) before sleeping, and |
| 315 | * then spu_acquire(ctx) when awoken. |
Christoph Hellwig | eebead5 | 2008-02-08 15:50:41 +1100 | [diff] [blame] | 316 | * |
Coly Li | 73ac36e | 2009-01-07 18:09:16 -0800 | [diff] [blame] | 317 | * Returns with state_mutex re-acquired when successful or |
Christoph Hellwig | eebead5 | 2008-02-08 15:50:41 +1100 | [diff] [blame] | 318 | * with -ERESTARTSYS and the state_mutex dropped when interrupted. |
Arnd Bergmann | ce8ab85 | 2006-01-04 20:31:29 +0100 | [diff] [blame] | 319 | */ |
| 320 | |
| 321 | #define spufs_wait(wq, condition) \ |
| 322 | ({ \ |
| 323 | int __ret = 0; \ |
| 324 | DEFINE_WAIT(__wait); \ |
| 325 | for (;;) { \ |
| 326 | prepare_to_wait(&(wq), &__wait, TASK_INTERRUPTIBLE); \ |
| 327 | if (condition) \ |
| 328 | break; \ |
Christoph Hellwig | eebead5 | 2008-02-08 15:50:41 +1100 | [diff] [blame] | 329 | spu_release(ctx); \ |
Jeremy Kerr | d376439 | 2007-04-23 21:08:24 +0200 | [diff] [blame] | 330 | if (signal_pending(current)) { \ |
| 331 | __ret = -ERESTARTSYS; \ |
| 332 | break; \ |
Arnd Bergmann | ce8ab85 | 2006-01-04 20:31:29 +0100 | [diff] [blame] | 333 | } \ |
Jeremy Kerr | d376439 | 2007-04-23 21:08:24 +0200 | [diff] [blame] | 334 | schedule(); \ |
Christoph Hellwig | c9101bd | 2007-12-20 16:39:59 +0900 | [diff] [blame] | 335 | __ret = spu_acquire(ctx); \ |
| 336 | if (__ret) \ |
| 337 | break; \ |
Arnd Bergmann | ce8ab85 | 2006-01-04 20:31:29 +0100 | [diff] [blame] | 338 | } \ |
| 339 | finish_wait(&(wq), &__wait); \ |
| 340 | __ret; \ |
| 341 | }) |
| 342 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 343 | size_t spu_wbox_write(struct spu_context *ctx, u32 data); |
| 344 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data); |
| 345 | |
| 346 | /* irq callback funcs. */ |
| 347 | void spufs_ibox_callback(struct spu *spu); |
| 348 | void spufs_wbox_callback(struct spu *spu); |
Luke Browning | f3d69e0 | 2008-04-27 18:41:55 +0000 | [diff] [blame] | 349 | void spufs_stop_callback(struct spu *spu, int irq); |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 350 | void spufs_mfc_callback(struct spu *spu); |
Arnd Bergmann | 9add11d | 2006-10-04 17:26:14 +0200 | [diff] [blame] | 351 | void spufs_dma_callback(struct spu *spu, int type); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 352 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 353 | extern struct spu_coredump_calls spufs_coredump_calls; |
| 354 | struct spufs_coredump_reader { |
| 355 | char *name; |
| 356 | ssize_t (*read)(struct spu_context *ctx, |
| 357 | char __user *buffer, size_t size, loff_t *pos); |
Michael Ellerman | 74de08b | 2007-09-19 14:38:12 +1000 | [diff] [blame] | 358 | u64 (*get)(struct spu_context *ctx); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 359 | size_t size; |
| 360 | }; |
Jeremy Kerr | 7425464 | 2009-02-17 11:44:14 +1100 | [diff] [blame] | 361 | extern const struct spufs_coredump_reader spufs_coredump_read[]; |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 362 | extern int spufs_coredump_num_notes; |
| 363 | |
Jeremy Kerr | 7cd58e4 | 2007-12-20 16:39:59 +0900 | [diff] [blame] | 364 | extern int spu_init_csa(struct spu_state *csa); |
| 365 | extern void spu_fini_csa(struct spu_state *csa); |
| 366 | extern int spu_save(struct spu_state *prev, struct spu *spu); |
| 367 | extern int spu_restore(struct spu_state *new, struct spu *spu); |
| 368 | extern int spu_switch(struct spu_state *prev, struct spu_state *new, |
| 369 | struct spu *spu); |
| 370 | extern int spu_alloc_lscsa(struct spu_state *csa); |
| 371 | extern void spu_free_lscsa(struct spu_state *csa); |
Andre Detsch | 27ec41d | 2007-07-20 21:39:33 +0200 | [diff] [blame] | 372 | |
Jeremy Kerr | 7cd58e4 | 2007-12-20 16:39:59 +0900 | [diff] [blame] | 373 | extern void spuctx_switch_state(struct spu_context *ctx, |
| 374 | enum spu_utilization_state new_state); |
Christoph Hellwig | fe2f896 | 2007-06-29 10:58:07 +1000 | [diff] [blame] | 375 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 376 | #endif |