Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1 | /* |
| 2 | * SPU file system -- file contents |
| 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 | |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 23 | #undef DEBUG |
| 24 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 25 | #include <linux/fs.h> |
| 26 | #include <linux/ioctl.h> |
| 27 | #include <linux/module.h> |
Arnd Bergmann | d88cfff | 2005-12-05 22:52:22 -0500 | [diff] [blame] | 28 | #include <linux/pagemap.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 29 | #include <linux/poll.h> |
Arnd Bergmann | 5110459 | 2005-12-05 22:52:25 -0500 | [diff] [blame] | 30 | #include <linux/ptrace.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 31 | |
| 32 | #include <asm/io.h> |
| 33 | #include <asm/semaphore.h> |
| 34 | #include <asm/spu.h> |
| 35 | #include <asm/uaccess.h> |
| 36 | |
| 37 | #include "spufs.h" |
| 38 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 39 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 40 | static int |
| 41 | spufs_mem_open(struct inode *inode, struct file *file) |
| 42 | { |
| 43 | struct spufs_inode_info *i = SPUFS_I(inode); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 44 | struct spu_context *ctx = i->i_ctx; |
| 45 | file->private_data = ctx; |
| 46 | file->f_mapping = inode->i_mapping; |
| 47 | ctx->local_store = inode->i_mapping; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 48 | return 0; |
| 49 | } |
| 50 | |
| 51 | static ssize_t |
| 52 | spufs_mem_read(struct file *file, char __user *buffer, |
| 53 | size_t size, loff_t *pos) |
| 54 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 55 | struct spu_context *ctx = file->private_data; |
| 56 | char *local_store; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 57 | int ret; |
| 58 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 59 | spu_acquire(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 60 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 61 | local_store = ctx->ops->get_ls(ctx); |
| 62 | ret = simple_read_from_buffer(buffer, size, pos, local_store, LS_SIZE); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 63 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 64 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 65 | return ret; |
| 66 | } |
| 67 | |
| 68 | static ssize_t |
| 69 | spufs_mem_write(struct file *file, const char __user *buffer, |
| 70 | size_t size, loff_t *pos) |
| 71 | { |
| 72 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 73 | char *local_store; |
| 74 | int ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 75 | |
| 76 | size = min_t(ssize_t, LS_SIZE - *pos, size); |
| 77 | if (size <= 0) |
| 78 | return -EFBIG; |
| 79 | *pos += size; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 80 | |
| 81 | spu_acquire(ctx); |
| 82 | |
| 83 | local_store = ctx->ops->get_ls(ctx); |
| 84 | ret = copy_from_user(local_store + *pos - size, |
| 85 | buffer, size) ? -EFAULT : size; |
| 86 | |
| 87 | spu_release(ctx); |
| 88 | return ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 89 | } |
| 90 | |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 91 | #ifdef CONFIG_SPUFS_MMAP |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 92 | static struct page * |
| 93 | spufs_mem_mmap_nopage(struct vm_area_struct *vma, |
| 94 | unsigned long address, int *type) |
| 95 | { |
| 96 | struct page *page = NOPAGE_SIGBUS; |
| 97 | |
| 98 | struct spu_context *ctx = vma->vm_file->private_data; |
| 99 | unsigned long offset = address - vma->vm_start; |
| 100 | offset += vma->vm_pgoff << PAGE_SHIFT; |
| 101 | |
| 102 | spu_acquire(ctx); |
| 103 | |
| 104 | if (ctx->state == SPU_STATE_SAVED) |
| 105 | page = vmalloc_to_page(ctx->csa.lscsa->ls + offset); |
| 106 | else |
| 107 | page = pfn_to_page((ctx->spu->local_store_phys + offset) |
| 108 | >> PAGE_SHIFT); |
| 109 | |
| 110 | spu_release(ctx); |
| 111 | |
| 112 | if (type) |
| 113 | *type = VM_FAULT_MINOR; |
| 114 | |
Arnd Bergmann | d88cfff | 2005-12-05 22:52:22 -0500 | [diff] [blame] | 115 | page_cache_get(page); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 116 | return page; |
| 117 | } |
| 118 | |
| 119 | static struct vm_operations_struct spufs_mem_mmap_vmops = { |
| 120 | .nopage = spufs_mem_mmap_nopage, |
| 121 | }; |
| 122 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 123 | static int |
| 124 | spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
| 125 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 126 | if (!(vma->vm_flags & VM_SHARED)) |
| 127 | return -EINVAL; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 128 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 129 | /* FIXME: */ |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 130 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
| 131 | | _PAGE_NO_CACHE); |
| 132 | |
| 133 | vma->vm_ops = &spufs_mem_mmap_vmops; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 134 | return 0; |
| 135 | } |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 136 | #endif |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 137 | |
| 138 | static struct file_operations spufs_mem_fops = { |
| 139 | .open = spufs_mem_open, |
| 140 | .read = spufs_mem_read, |
| 141 | .write = spufs_mem_write, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 142 | .llseek = generic_file_llseek, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 143 | #ifdef CONFIG_SPUFS_MMAP |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 144 | .mmap = spufs_mem_mmap, |
| 145 | #endif |
| 146 | }; |
| 147 | |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 148 | #ifdef CONFIG_SPUFS_MMAP |
| 149 | static struct page *spufs_ps_nopage(struct vm_area_struct *vma, |
| 150 | unsigned long address, |
| 151 | int *type, unsigned long ps_offs) |
| 152 | { |
| 153 | struct page *page = NOPAGE_SIGBUS; |
| 154 | int fault_type = VM_FAULT_SIGBUS; |
| 155 | struct spu_context *ctx = vma->vm_file->private_data; |
| 156 | unsigned long offset = address - vma->vm_start; |
| 157 | unsigned long area; |
| 158 | int ret; |
| 159 | |
| 160 | offset += vma->vm_pgoff << PAGE_SHIFT; |
| 161 | if (offset >= 0x4000) |
| 162 | goto out; |
| 163 | |
| 164 | ret = spu_acquire_runnable(ctx); |
| 165 | if (ret) |
| 166 | goto out; |
| 167 | |
| 168 | area = ctx->spu->problem_phys + ps_offs; |
| 169 | page = pfn_to_page((area + offset) >> PAGE_SHIFT); |
| 170 | fault_type = VM_FAULT_MINOR; |
| 171 | page_cache_get(page); |
| 172 | |
| 173 | spu_release(ctx); |
| 174 | |
| 175 | out: |
| 176 | if (type) |
| 177 | *type = fault_type; |
| 178 | |
| 179 | return page; |
| 180 | } |
| 181 | |
| 182 | static struct page *spufs_cntl_mmap_nopage(struct vm_area_struct *vma, |
| 183 | unsigned long address, int *type) |
| 184 | { |
| 185 | return spufs_ps_nopage(vma, address, type, 0x4000); |
| 186 | } |
| 187 | |
| 188 | static struct vm_operations_struct spufs_cntl_mmap_vmops = { |
| 189 | .nopage = spufs_cntl_mmap_nopage, |
| 190 | }; |
| 191 | |
| 192 | /* |
| 193 | * mmap support for problem state control area [0x4000 - 0x4fff]. |
| 194 | * Mapping this area requires that the application have CAP_SYS_RAWIO, |
| 195 | * as these registers require special care when read/writing. |
| 196 | */ |
| 197 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) |
| 198 | { |
| 199 | if (!(vma->vm_flags & VM_SHARED)) |
| 200 | return -EINVAL; |
| 201 | |
| 202 | if (!capable(CAP_SYS_RAWIO)) |
| 203 | return -EPERM; |
| 204 | |
| 205 | vma->vm_flags |= VM_RESERVED; |
| 206 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
| 207 | | _PAGE_NO_CACHE); |
| 208 | |
| 209 | vma->vm_ops = &spufs_cntl_mmap_vmops; |
| 210 | return 0; |
| 211 | } |
| 212 | #endif |
| 213 | |
| 214 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
| 215 | { |
| 216 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 217 | struct spu_context *ctx = i->i_ctx; |
| 218 | |
| 219 | file->private_data = ctx; |
| 220 | file->f_mapping = inode->i_mapping; |
| 221 | ctx->cntl = inode->i_mapping; |
| 222 | return 0; |
| 223 | } |
| 224 | |
| 225 | static ssize_t |
| 226 | spufs_cntl_read(struct file *file, char __user *buffer, |
| 227 | size_t size, loff_t *pos) |
| 228 | { |
| 229 | /* FIXME: read from spu status */ |
| 230 | return -EINVAL; |
| 231 | } |
| 232 | |
| 233 | static ssize_t |
| 234 | spufs_cntl_write(struct file *file, const char __user *buffer, |
| 235 | size_t size, loff_t *pos) |
| 236 | { |
| 237 | /* FIXME: write to runctl bit */ |
| 238 | return -EINVAL; |
| 239 | } |
| 240 | |
| 241 | static struct file_operations spufs_cntl_fops = { |
| 242 | .open = spufs_cntl_open, |
| 243 | .read = spufs_cntl_read, |
| 244 | .write = spufs_cntl_write, |
| 245 | #ifdef CONFIG_SPUFS_MMAP |
| 246 | .mmap = spufs_cntl_mmap, |
| 247 | #endif |
| 248 | }; |
| 249 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 250 | static int |
| 251 | spufs_regs_open(struct inode *inode, struct file *file) |
| 252 | { |
| 253 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 254 | file->private_data = i->i_ctx; |
| 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | static ssize_t |
| 259 | spufs_regs_read(struct file *file, char __user *buffer, |
| 260 | size_t size, loff_t *pos) |
| 261 | { |
| 262 | struct spu_context *ctx = file->private_data; |
| 263 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 264 | int ret; |
| 265 | |
| 266 | spu_acquire_saved(ctx); |
| 267 | |
| 268 | ret = simple_read_from_buffer(buffer, size, pos, |
| 269 | lscsa->gprs, sizeof lscsa->gprs); |
| 270 | |
| 271 | spu_release(ctx); |
| 272 | return ret; |
| 273 | } |
| 274 | |
| 275 | static ssize_t |
| 276 | spufs_regs_write(struct file *file, const char __user *buffer, |
| 277 | size_t size, loff_t *pos) |
| 278 | { |
| 279 | struct spu_context *ctx = file->private_data; |
| 280 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 281 | int ret; |
| 282 | |
| 283 | size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); |
| 284 | if (size <= 0) |
| 285 | return -EFBIG; |
| 286 | *pos += size; |
| 287 | |
| 288 | spu_acquire_saved(ctx); |
| 289 | |
| 290 | ret = copy_from_user(lscsa->gprs + *pos - size, |
| 291 | buffer, size) ? -EFAULT : size; |
| 292 | |
| 293 | spu_release(ctx); |
| 294 | return ret; |
| 295 | } |
| 296 | |
| 297 | static struct file_operations spufs_regs_fops = { |
| 298 | .open = spufs_regs_open, |
| 299 | .read = spufs_regs_read, |
| 300 | .write = spufs_regs_write, |
| 301 | .llseek = generic_file_llseek, |
| 302 | }; |
| 303 | |
| 304 | static ssize_t |
| 305 | spufs_fpcr_read(struct file *file, char __user * buffer, |
| 306 | size_t size, loff_t * pos) |
| 307 | { |
| 308 | struct spu_context *ctx = file->private_data; |
| 309 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 310 | int ret; |
| 311 | |
| 312 | spu_acquire_saved(ctx); |
| 313 | |
| 314 | ret = simple_read_from_buffer(buffer, size, pos, |
| 315 | &lscsa->fpcr, sizeof(lscsa->fpcr)); |
| 316 | |
| 317 | spu_release(ctx); |
| 318 | return ret; |
| 319 | } |
| 320 | |
| 321 | static ssize_t |
| 322 | spufs_fpcr_write(struct file *file, const char __user * buffer, |
| 323 | size_t size, loff_t * pos) |
| 324 | { |
| 325 | struct spu_context *ctx = file->private_data; |
| 326 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 327 | int ret; |
| 328 | |
| 329 | size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); |
| 330 | if (size <= 0) |
| 331 | return -EFBIG; |
| 332 | *pos += size; |
| 333 | |
| 334 | spu_acquire_saved(ctx); |
| 335 | |
| 336 | ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, |
| 337 | buffer, size) ? -EFAULT : size; |
| 338 | |
| 339 | spu_release(ctx); |
| 340 | return ret; |
| 341 | } |
| 342 | |
| 343 | static struct file_operations spufs_fpcr_fops = { |
| 344 | .open = spufs_regs_open, |
| 345 | .read = spufs_fpcr_read, |
| 346 | .write = spufs_fpcr_write, |
| 347 | .llseek = generic_file_llseek, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 348 | }; |
| 349 | |
| 350 | /* generic open function for all pipe-like files */ |
| 351 | static int spufs_pipe_open(struct inode *inode, struct file *file) |
| 352 | { |
| 353 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 354 | file->private_data = i->i_ctx; |
| 355 | |
| 356 | return nonseekable_open(inode, file); |
| 357 | } |
| 358 | |
| 359 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
| 360 | size_t len, loff_t *pos) |
| 361 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 362 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 363 | u32 mbox_data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 364 | int ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 365 | |
| 366 | if (len < 4) |
| 367 | return -EINVAL; |
| 368 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 369 | spu_acquire(ctx); |
| 370 | ret = ctx->ops->mbox_read(ctx, &mbox_data); |
| 371 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 372 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 373 | if (!ret) |
| 374 | return -EAGAIN; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 375 | |
| 376 | if (copy_to_user(buf, &mbox_data, sizeof mbox_data)) |
| 377 | return -EFAULT; |
| 378 | |
| 379 | return 4; |
| 380 | } |
| 381 | |
| 382 | static struct file_operations spufs_mbox_fops = { |
| 383 | .open = spufs_pipe_open, |
| 384 | .read = spufs_mbox_read, |
| 385 | }; |
| 386 | |
| 387 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, |
| 388 | size_t len, loff_t *pos) |
| 389 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 390 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 391 | u32 mbox_stat; |
| 392 | |
| 393 | if (len < 4) |
| 394 | return -EINVAL; |
| 395 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 396 | spu_acquire(ctx); |
| 397 | |
| 398 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; |
| 399 | |
| 400 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 401 | |
| 402 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) |
| 403 | return -EFAULT; |
| 404 | |
| 405 | return 4; |
| 406 | } |
| 407 | |
| 408 | static struct file_operations spufs_mbox_stat_fops = { |
| 409 | .open = spufs_pipe_open, |
| 410 | .read = spufs_mbox_stat_read, |
| 411 | }; |
| 412 | |
| 413 | /* low-level ibox access function */ |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 414 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 415 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 416 | return ctx->ops->ibox_read(ctx, data); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 417 | } |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 418 | |
| 419 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
| 420 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 421 | struct spu_context *ctx = file->private_data; |
| 422 | |
| 423 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
| 424 | } |
| 425 | |
| 426 | /* interrupt-level ibox callback function. */ |
| 427 | void spufs_ibox_callback(struct spu *spu) |
| 428 | { |
| 429 | struct spu_context *ctx = spu->ctx; |
| 430 | |
| 431 | wake_up_all(&ctx->ibox_wq); |
| 432 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 433 | } |
| 434 | |
| 435 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
| 436 | size_t len, loff_t *pos) |
| 437 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 438 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 439 | u32 ibox_data; |
| 440 | ssize_t ret; |
| 441 | |
| 442 | if (len < 4) |
| 443 | return -EINVAL; |
| 444 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 445 | spu_acquire(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 446 | |
| 447 | ret = 0; |
| 448 | if (file->f_flags & O_NONBLOCK) { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 449 | if (!spu_ibox_read(ctx, &ibox_data)) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 450 | ret = -EAGAIN; |
| 451 | } else { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 452 | ret = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 453 | } |
| 454 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 455 | spu_release(ctx); |
| 456 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 457 | if (ret) |
| 458 | return ret; |
| 459 | |
| 460 | ret = 4; |
| 461 | if (copy_to_user(buf, &ibox_data, sizeof ibox_data)) |
| 462 | ret = -EFAULT; |
| 463 | |
| 464 | return ret; |
| 465 | } |
| 466 | |
| 467 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) |
| 468 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 469 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 470 | unsigned int mask; |
| 471 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 472 | poll_wait(file, &ctx->ibox_wq, wait); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 473 | |
Arnd Bergmann | 3a843d7 | 2005-12-05 22:52:27 -0500 | [diff] [blame] | 474 | spu_acquire(ctx); |
| 475 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); |
| 476 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 477 | |
| 478 | return mask; |
| 479 | } |
| 480 | |
| 481 | static struct file_operations spufs_ibox_fops = { |
| 482 | .open = spufs_pipe_open, |
| 483 | .read = spufs_ibox_read, |
| 484 | .poll = spufs_ibox_poll, |
| 485 | .fasync = spufs_ibox_fasync, |
| 486 | }; |
| 487 | |
| 488 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, |
| 489 | size_t len, loff_t *pos) |
| 490 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 491 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 492 | u32 ibox_stat; |
| 493 | |
| 494 | if (len < 4) |
| 495 | return -EINVAL; |
| 496 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 497 | spu_acquire(ctx); |
| 498 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
| 499 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 500 | |
| 501 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) |
| 502 | return -EFAULT; |
| 503 | |
| 504 | return 4; |
| 505 | } |
| 506 | |
| 507 | static struct file_operations spufs_ibox_stat_fops = { |
| 508 | .open = spufs_pipe_open, |
| 509 | .read = spufs_ibox_stat_read, |
| 510 | }; |
| 511 | |
| 512 | /* low-level mailbox write */ |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 513 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 514 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 515 | return ctx->ops->wbox_write(ctx, data); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 516 | } |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 517 | |
| 518 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
| 519 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 520 | struct spu_context *ctx = file->private_data; |
| 521 | int ret; |
| 522 | |
| 523 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
| 524 | |
| 525 | return ret; |
| 526 | } |
| 527 | |
| 528 | /* interrupt-level wbox callback function. */ |
| 529 | void spufs_wbox_callback(struct spu *spu) |
| 530 | { |
| 531 | struct spu_context *ctx = spu->ctx; |
| 532 | |
| 533 | wake_up_all(&ctx->wbox_wq); |
| 534 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
| 538 | size_t len, loff_t *pos) |
| 539 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 540 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 541 | u32 wbox_data; |
| 542 | int ret; |
| 543 | |
| 544 | if (len < 4) |
| 545 | return -EINVAL; |
| 546 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 547 | if (copy_from_user(&wbox_data, buf, sizeof wbox_data)) |
| 548 | return -EFAULT; |
| 549 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 550 | spu_acquire(ctx); |
| 551 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 552 | ret = 0; |
| 553 | if (file->f_flags & O_NONBLOCK) { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 554 | if (!spu_wbox_write(ctx, wbox_data)) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 555 | ret = -EAGAIN; |
| 556 | } else { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 557 | ret = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 558 | } |
| 559 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 560 | spu_release(ctx); |
| 561 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 562 | return ret ? ret : sizeof wbox_data; |
| 563 | } |
| 564 | |
| 565 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) |
| 566 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 567 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 568 | unsigned int mask; |
| 569 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 570 | poll_wait(file, &ctx->wbox_wq, wait); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 571 | |
Arnd Bergmann | 3a843d7 | 2005-12-05 22:52:27 -0500 | [diff] [blame] | 572 | spu_acquire(ctx); |
| 573 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); |
| 574 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 575 | |
| 576 | return mask; |
| 577 | } |
| 578 | |
| 579 | static struct file_operations spufs_wbox_fops = { |
| 580 | .open = spufs_pipe_open, |
| 581 | .write = spufs_wbox_write, |
| 582 | .poll = spufs_wbox_poll, |
| 583 | .fasync = spufs_wbox_fasync, |
| 584 | }; |
| 585 | |
| 586 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, |
| 587 | size_t len, loff_t *pos) |
| 588 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 589 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 590 | u32 wbox_stat; |
| 591 | |
| 592 | if (len < 4) |
| 593 | return -EINVAL; |
| 594 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 595 | spu_acquire(ctx); |
| 596 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
| 597 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 598 | |
| 599 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) |
| 600 | return -EFAULT; |
| 601 | |
| 602 | return 4; |
| 603 | } |
| 604 | |
| 605 | static struct file_operations spufs_wbox_stat_fops = { |
| 606 | .open = spufs_pipe_open, |
| 607 | .read = spufs_wbox_stat_read, |
| 608 | }; |
| 609 | |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 610 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
| 611 | { |
| 612 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 613 | struct spu_context *ctx = i->i_ctx; |
| 614 | file->private_data = ctx; |
| 615 | file->f_mapping = inode->i_mapping; |
| 616 | ctx->signal1 = inode->i_mapping; |
| 617 | return nonseekable_open(inode, file); |
| 618 | } |
| 619 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 620 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
| 621 | size_t len, loff_t *pos) |
| 622 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 623 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 624 | u32 data; |
| 625 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 626 | if (len < 4) |
| 627 | return -EINVAL; |
| 628 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 629 | spu_acquire(ctx); |
| 630 | data = ctx->ops->signal1_read(ctx); |
| 631 | spu_release(ctx); |
| 632 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 633 | if (copy_to_user(buf, &data, 4)) |
| 634 | return -EFAULT; |
| 635 | |
| 636 | return 4; |
| 637 | } |
| 638 | |
| 639 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
| 640 | size_t len, loff_t *pos) |
| 641 | { |
| 642 | struct spu_context *ctx; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 643 | u32 data; |
| 644 | |
| 645 | ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 646 | |
| 647 | if (len < 4) |
| 648 | return -EINVAL; |
| 649 | |
| 650 | if (copy_from_user(&data, buf, 4)) |
| 651 | return -EFAULT; |
| 652 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 653 | spu_acquire(ctx); |
| 654 | ctx->ops->signal1_write(ctx, data); |
| 655 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 656 | |
| 657 | return 4; |
| 658 | } |
| 659 | |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 660 | #ifdef CONFIG_SPUFS_MMAP |
| 661 | static struct page *spufs_signal1_mmap_nopage(struct vm_area_struct *vma, |
| 662 | unsigned long address, int *type) |
| 663 | { |
| 664 | return spufs_ps_nopage(vma, address, type, 0x14000); |
| 665 | } |
| 666 | |
| 667 | static struct vm_operations_struct spufs_signal1_mmap_vmops = { |
| 668 | .nopage = spufs_signal1_mmap_nopage, |
| 669 | }; |
| 670 | |
| 671 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) |
| 672 | { |
| 673 | if (!(vma->vm_flags & VM_SHARED)) |
| 674 | return -EINVAL; |
| 675 | |
| 676 | vma->vm_flags |= VM_RESERVED; |
| 677 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
| 678 | | _PAGE_NO_CACHE); |
| 679 | |
| 680 | vma->vm_ops = &spufs_signal1_mmap_vmops; |
| 681 | return 0; |
| 682 | } |
| 683 | #endif |
| 684 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 685 | static struct file_operations spufs_signal1_fops = { |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 686 | .open = spufs_signal1_open, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 687 | .read = spufs_signal1_read, |
| 688 | .write = spufs_signal1_write, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 689 | #ifdef CONFIG_SPUFS_MMAP |
| 690 | .mmap = spufs_signal1_mmap, |
| 691 | #endif |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 692 | }; |
| 693 | |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 694 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
| 695 | { |
| 696 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 697 | struct spu_context *ctx = i->i_ctx; |
| 698 | file->private_data = ctx; |
| 699 | file->f_mapping = inode->i_mapping; |
| 700 | ctx->signal2 = inode->i_mapping; |
| 701 | return nonseekable_open(inode, file); |
| 702 | } |
| 703 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 704 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, |
| 705 | size_t len, loff_t *pos) |
| 706 | { |
| 707 | struct spu_context *ctx; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 708 | u32 data; |
| 709 | |
| 710 | ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 711 | |
| 712 | if (len < 4) |
| 713 | return -EINVAL; |
| 714 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 715 | spu_acquire(ctx); |
| 716 | data = ctx->ops->signal2_read(ctx); |
| 717 | spu_release(ctx); |
| 718 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 719 | if (copy_to_user(buf, &data, 4)) |
| 720 | return -EFAULT; |
| 721 | |
| 722 | return 4; |
| 723 | } |
| 724 | |
| 725 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, |
| 726 | size_t len, loff_t *pos) |
| 727 | { |
| 728 | struct spu_context *ctx; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 729 | u32 data; |
| 730 | |
| 731 | ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 732 | |
| 733 | if (len < 4) |
| 734 | return -EINVAL; |
| 735 | |
| 736 | if (copy_from_user(&data, buf, 4)) |
| 737 | return -EFAULT; |
| 738 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 739 | spu_acquire(ctx); |
| 740 | ctx->ops->signal2_write(ctx, data); |
| 741 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 742 | |
| 743 | return 4; |
| 744 | } |
| 745 | |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 746 | #ifdef CONFIG_SPUFS_MMAP |
| 747 | static struct page *spufs_signal2_mmap_nopage(struct vm_area_struct *vma, |
| 748 | unsigned long address, int *type) |
| 749 | { |
| 750 | return spufs_ps_nopage(vma, address, type, 0x1c000); |
| 751 | } |
| 752 | |
| 753 | static struct vm_operations_struct spufs_signal2_mmap_vmops = { |
| 754 | .nopage = spufs_signal2_mmap_nopage, |
| 755 | }; |
| 756 | |
| 757 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) |
| 758 | { |
| 759 | if (!(vma->vm_flags & VM_SHARED)) |
| 760 | return -EINVAL; |
| 761 | |
| 762 | /* FIXME: */ |
| 763 | vma->vm_flags |= VM_RESERVED; |
| 764 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
| 765 | | _PAGE_NO_CACHE); |
| 766 | |
| 767 | vma->vm_ops = &spufs_signal2_mmap_vmops; |
| 768 | return 0; |
| 769 | } |
| 770 | #endif |
| 771 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 772 | static struct file_operations spufs_signal2_fops = { |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 773 | .open = spufs_signal2_open, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 774 | .read = spufs_signal2_read, |
| 775 | .write = spufs_signal2_write, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 776 | #ifdef CONFIG_SPUFS_MMAP |
| 777 | .mmap = spufs_signal2_mmap, |
| 778 | #endif |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 779 | }; |
| 780 | |
| 781 | static void spufs_signal1_type_set(void *data, u64 val) |
| 782 | { |
| 783 | struct spu_context *ctx = data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 784 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 785 | spu_acquire(ctx); |
| 786 | ctx->ops->signal1_type_set(ctx, val); |
| 787 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | static u64 spufs_signal1_type_get(void *data) |
| 791 | { |
| 792 | struct spu_context *ctx = data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 793 | u64 ret; |
| 794 | |
| 795 | spu_acquire(ctx); |
| 796 | ret = ctx->ops->signal1_type_get(ctx); |
| 797 | spu_release(ctx); |
| 798 | |
| 799 | return ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 800 | } |
| 801 | DEFINE_SIMPLE_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
| 802 | spufs_signal1_type_set, "%llu"); |
| 803 | |
| 804 | static void spufs_signal2_type_set(void *data, u64 val) |
| 805 | { |
| 806 | struct spu_context *ctx = data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 807 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 808 | spu_acquire(ctx); |
| 809 | ctx->ops->signal2_type_set(ctx, val); |
| 810 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 811 | } |
| 812 | |
| 813 | static u64 spufs_signal2_type_get(void *data) |
| 814 | { |
| 815 | struct spu_context *ctx = data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 816 | u64 ret; |
| 817 | |
| 818 | spu_acquire(ctx); |
| 819 | ret = ctx->ops->signal2_type_get(ctx); |
| 820 | spu_release(ctx); |
| 821 | |
| 822 | return ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 823 | } |
| 824 | DEFINE_SIMPLE_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
| 825 | spufs_signal2_type_set, "%llu"); |
| 826 | |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 827 | #ifdef CONFIG_SPUFS_MMAP |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 828 | static struct page *spufs_mss_mmap_nopage(struct vm_area_struct *vma, |
| 829 | unsigned long address, int *type) |
| 830 | { |
| 831 | return spufs_ps_nopage(vma, address, type, 0x0000); |
| 832 | } |
| 833 | |
| 834 | static struct vm_operations_struct spufs_mss_mmap_vmops = { |
| 835 | .nopage = spufs_mss_mmap_nopage, |
| 836 | }; |
| 837 | |
| 838 | /* |
| 839 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. |
| 840 | * Mapping this area requires that the application have CAP_SYS_RAWIO, |
| 841 | * as these registers require special care when read/writing. |
| 842 | */ |
| 843 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) |
| 844 | { |
| 845 | if (!(vma->vm_flags & VM_SHARED)) |
| 846 | return -EINVAL; |
| 847 | |
| 848 | if (!capable(CAP_SYS_RAWIO)) |
| 849 | return -EPERM; |
| 850 | |
| 851 | vma->vm_flags |= VM_RESERVED; |
| 852 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
| 853 | | _PAGE_NO_CACHE); |
| 854 | |
| 855 | vma->vm_ops = &spufs_mss_mmap_vmops; |
| 856 | return 0; |
| 857 | } |
| 858 | #endif |
| 859 | |
| 860 | static int spufs_mss_open(struct inode *inode, struct file *file) |
| 861 | { |
| 862 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 863 | |
| 864 | file->private_data = i->i_ctx; |
| 865 | return nonseekable_open(inode, file); |
| 866 | } |
| 867 | |
| 868 | static struct file_operations spufs_mss_fops = { |
| 869 | .open = spufs_mss_open, |
| 870 | #ifdef CONFIG_SPUFS_MMAP |
| 871 | .mmap = spufs_mss_mmap, |
| 872 | #endif |
| 873 | }; |
| 874 | |
| 875 | |
| 876 | #ifdef CONFIG_SPUFS_MMAP |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 877 | static struct page *spufs_mfc_mmap_nopage(struct vm_area_struct *vma, |
| 878 | unsigned long address, int *type) |
| 879 | { |
| 880 | return spufs_ps_nopage(vma, address, type, 0x3000); |
| 881 | } |
| 882 | |
| 883 | static struct vm_operations_struct spufs_mfc_mmap_vmops = { |
| 884 | .nopage = spufs_mfc_mmap_nopage, |
| 885 | }; |
| 886 | |
| 887 | /* |
| 888 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. |
| 889 | * Mapping this area requires that the application have CAP_SYS_RAWIO, |
| 890 | * as these registers require special care when read/writing. |
| 891 | */ |
| 892 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) |
| 893 | { |
| 894 | if (!(vma->vm_flags & VM_SHARED)) |
| 895 | return -EINVAL; |
| 896 | |
| 897 | if (!capable(CAP_SYS_RAWIO)) |
| 898 | return -EPERM; |
| 899 | |
| 900 | vma->vm_flags |= VM_RESERVED; |
| 901 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
| 902 | | _PAGE_NO_CACHE); |
| 903 | |
| 904 | vma->vm_ops = &spufs_mfc_mmap_vmops; |
| 905 | return 0; |
| 906 | } |
| 907 | #endif |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 908 | |
| 909 | static int spufs_mfc_open(struct inode *inode, struct file *file) |
| 910 | { |
| 911 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 912 | struct spu_context *ctx = i->i_ctx; |
| 913 | |
| 914 | /* we don't want to deal with DMA into other processes */ |
| 915 | if (ctx->owner != current->mm) |
| 916 | return -EINVAL; |
| 917 | |
| 918 | if (atomic_read(&inode->i_count) != 1) |
| 919 | return -EBUSY; |
| 920 | |
| 921 | file->private_data = ctx; |
| 922 | return nonseekable_open(inode, file); |
| 923 | } |
| 924 | |
| 925 | /* interrupt-level mfc callback function. */ |
| 926 | void spufs_mfc_callback(struct spu *spu) |
| 927 | { |
| 928 | struct spu_context *ctx = spu->ctx; |
| 929 | |
| 930 | wake_up_all(&ctx->mfc_wq); |
| 931 | |
| 932 | pr_debug("%s %s\n", __FUNCTION__, spu->name); |
| 933 | if (ctx->mfc_fasync) { |
| 934 | u32 free_elements, tagstatus; |
| 935 | unsigned int mask; |
| 936 | |
| 937 | /* no need for spu_acquire in interrupt context */ |
| 938 | free_elements = ctx->ops->get_mfc_free_elements(ctx); |
| 939 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); |
| 940 | |
| 941 | mask = 0; |
| 942 | if (free_elements & 0xffff) |
| 943 | mask |= POLLOUT; |
| 944 | if (tagstatus & ctx->tagwait) |
| 945 | mask |= POLLIN; |
| 946 | |
| 947 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) |
| 952 | { |
| 953 | /* See if there is one tag group is complete */ |
| 954 | /* FIXME we need locking around tagwait */ |
| 955 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; |
| 956 | ctx->tagwait &= ~*status; |
| 957 | if (*status) |
| 958 | return 1; |
| 959 | |
| 960 | /* enable interrupt waiting for any tag group, |
| 961 | may silently fail if interrupts are already enabled */ |
| 962 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); |
| 963 | return 0; |
| 964 | } |
| 965 | |
| 966 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, |
| 967 | size_t size, loff_t *pos) |
| 968 | { |
| 969 | struct spu_context *ctx = file->private_data; |
| 970 | int ret = -EINVAL; |
| 971 | u32 status; |
| 972 | |
| 973 | if (size != 4) |
| 974 | goto out; |
| 975 | |
| 976 | spu_acquire(ctx); |
| 977 | if (file->f_flags & O_NONBLOCK) { |
| 978 | status = ctx->ops->read_mfc_tagstatus(ctx); |
| 979 | if (!(status & ctx->tagwait)) |
| 980 | ret = -EAGAIN; |
| 981 | else |
| 982 | ctx->tagwait &= ~status; |
| 983 | } else { |
| 984 | ret = spufs_wait(ctx->mfc_wq, |
| 985 | spufs_read_mfc_tagstatus(ctx, &status)); |
| 986 | } |
| 987 | spu_release(ctx); |
| 988 | |
| 989 | if (ret) |
| 990 | goto out; |
| 991 | |
| 992 | ret = 4; |
| 993 | if (copy_to_user(buffer, &status, 4)) |
| 994 | ret = -EFAULT; |
| 995 | |
| 996 | out: |
| 997 | return ret; |
| 998 | } |
| 999 | |
| 1000 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) |
| 1001 | { |
| 1002 | pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, |
| 1003 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
| 1004 | |
| 1005 | switch (cmd->cmd) { |
| 1006 | case MFC_PUT_CMD: |
| 1007 | case MFC_PUTF_CMD: |
| 1008 | case MFC_PUTB_CMD: |
| 1009 | case MFC_GET_CMD: |
| 1010 | case MFC_GETF_CMD: |
| 1011 | case MFC_GETB_CMD: |
| 1012 | break; |
| 1013 | default: |
| 1014 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); |
| 1015 | return -EIO; |
| 1016 | } |
| 1017 | |
| 1018 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { |
| 1019 | pr_debug("invalid DMA alignment, ea %lx lsa %x\n", |
| 1020 | cmd->ea, cmd->lsa); |
| 1021 | return -EIO; |
| 1022 | } |
| 1023 | |
| 1024 | switch (cmd->size & 0xf) { |
| 1025 | case 1: |
| 1026 | break; |
| 1027 | case 2: |
| 1028 | if (cmd->lsa & 1) |
| 1029 | goto error; |
| 1030 | break; |
| 1031 | case 4: |
| 1032 | if (cmd->lsa & 3) |
| 1033 | goto error; |
| 1034 | break; |
| 1035 | case 8: |
| 1036 | if (cmd->lsa & 7) |
| 1037 | goto error; |
| 1038 | break; |
| 1039 | case 0: |
| 1040 | if (cmd->lsa & 15) |
| 1041 | goto error; |
| 1042 | break; |
| 1043 | error: |
| 1044 | default: |
| 1045 | pr_debug("invalid DMA alignment %x for size %x\n", |
| 1046 | cmd->lsa & 0xf, cmd->size); |
| 1047 | return -EIO; |
| 1048 | } |
| 1049 | |
| 1050 | if (cmd->size > 16 * 1024) { |
| 1051 | pr_debug("invalid DMA size %x\n", cmd->size); |
| 1052 | return -EIO; |
| 1053 | } |
| 1054 | |
| 1055 | if (cmd->tag & 0xfff0) { |
| 1056 | /* we reserve the higher tag numbers for kernel use */ |
| 1057 | pr_debug("invalid DMA tag\n"); |
| 1058 | return -EIO; |
| 1059 | } |
| 1060 | |
| 1061 | if (cmd->class) { |
| 1062 | /* not supported in this version */ |
| 1063 | pr_debug("invalid DMA class\n"); |
| 1064 | return -EIO; |
| 1065 | } |
| 1066 | |
| 1067 | return 0; |
| 1068 | } |
| 1069 | |
| 1070 | static int spu_send_mfc_command(struct spu_context *ctx, |
| 1071 | struct mfc_dma_command cmd, |
| 1072 | int *error) |
| 1073 | { |
| 1074 | *error = ctx->ops->send_mfc_command(ctx, &cmd); |
| 1075 | if (*error == -EAGAIN) { |
| 1076 | /* wait for any tag group to complete |
| 1077 | so we have space for the new command */ |
| 1078 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); |
| 1079 | /* try again, because the queue might be |
| 1080 | empty again */ |
| 1081 | *error = ctx->ops->send_mfc_command(ctx, &cmd); |
| 1082 | if (*error == -EAGAIN) |
| 1083 | return 0; |
| 1084 | } |
| 1085 | return 1; |
| 1086 | } |
| 1087 | |
| 1088 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, |
| 1089 | size_t size, loff_t *pos) |
| 1090 | { |
| 1091 | struct spu_context *ctx = file->private_data; |
| 1092 | struct mfc_dma_command cmd; |
| 1093 | int ret = -EINVAL; |
| 1094 | |
| 1095 | if (size != sizeof cmd) |
| 1096 | goto out; |
| 1097 | |
| 1098 | ret = -EFAULT; |
| 1099 | if (copy_from_user(&cmd, buffer, sizeof cmd)) |
| 1100 | goto out; |
| 1101 | |
| 1102 | ret = spufs_check_valid_dma(&cmd); |
| 1103 | if (ret) |
| 1104 | goto out; |
| 1105 | |
| 1106 | spu_acquire_runnable(ctx); |
| 1107 | if (file->f_flags & O_NONBLOCK) { |
| 1108 | ret = ctx->ops->send_mfc_command(ctx, &cmd); |
| 1109 | } else { |
| 1110 | int status; |
| 1111 | ret = spufs_wait(ctx->mfc_wq, |
| 1112 | spu_send_mfc_command(ctx, cmd, &status)); |
| 1113 | if (status) |
| 1114 | ret = status; |
| 1115 | } |
| 1116 | spu_release(ctx); |
| 1117 | |
| 1118 | if (ret) |
| 1119 | goto out; |
| 1120 | |
| 1121 | ctx->tagwait |= 1 << cmd.tag; |
| 1122 | |
| 1123 | out: |
| 1124 | return ret; |
| 1125 | } |
| 1126 | |
| 1127 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) |
| 1128 | { |
| 1129 | struct spu_context *ctx = file->private_data; |
| 1130 | u32 free_elements, tagstatus; |
| 1131 | unsigned int mask; |
| 1132 | |
| 1133 | spu_acquire(ctx); |
| 1134 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
| 1135 | free_elements = ctx->ops->get_mfc_free_elements(ctx); |
| 1136 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); |
| 1137 | spu_release(ctx); |
| 1138 | |
| 1139 | poll_wait(file, &ctx->mfc_wq, wait); |
| 1140 | |
| 1141 | mask = 0; |
| 1142 | if (free_elements & 0xffff) |
| 1143 | mask |= POLLOUT | POLLWRNORM; |
| 1144 | if (tagstatus & ctx->tagwait) |
| 1145 | mask |= POLLIN | POLLRDNORM; |
| 1146 | |
| 1147 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__, |
| 1148 | free_elements, tagstatus, ctx->tagwait); |
| 1149 | |
| 1150 | return mask; |
| 1151 | } |
| 1152 | |
Al Viro | 73b6af8 | 2006-06-25 16:42:33 -0700 | [diff] [blame] | 1153 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1154 | { |
| 1155 | struct spu_context *ctx = file->private_data; |
| 1156 | int ret; |
| 1157 | |
| 1158 | spu_acquire(ctx); |
| 1159 | #if 0 |
| 1160 | /* this currently hangs */ |
| 1161 | ret = spufs_wait(ctx->mfc_wq, |
| 1162 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); |
| 1163 | if (ret) |
| 1164 | goto out; |
| 1165 | ret = spufs_wait(ctx->mfc_wq, |
| 1166 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); |
| 1167 | out: |
| 1168 | #else |
| 1169 | ret = 0; |
| 1170 | #endif |
| 1171 | spu_release(ctx); |
| 1172 | |
| 1173 | return ret; |
| 1174 | } |
| 1175 | |
| 1176 | static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, |
| 1177 | int datasync) |
| 1178 | { |
Al Viro | 73b6af8 | 2006-06-25 16:42:33 -0700 | [diff] [blame] | 1179 | return spufs_mfc_flush(file, NULL); |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1180 | } |
| 1181 | |
| 1182 | static int spufs_mfc_fasync(int fd, struct file *file, int on) |
| 1183 | { |
| 1184 | struct spu_context *ctx = file->private_data; |
| 1185 | |
| 1186 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); |
| 1187 | } |
| 1188 | |
| 1189 | static struct file_operations spufs_mfc_fops = { |
| 1190 | .open = spufs_mfc_open, |
| 1191 | .read = spufs_mfc_read, |
| 1192 | .write = spufs_mfc_write, |
| 1193 | .poll = spufs_mfc_poll, |
| 1194 | .flush = spufs_mfc_flush, |
| 1195 | .fsync = spufs_mfc_fsync, |
| 1196 | .fasync = spufs_mfc_fasync, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1197 | #ifdef CONFIG_SPUFS_MMAP |
| 1198 | .mmap = spufs_mfc_mmap, |
| 1199 | #endif |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1200 | }; |
| 1201 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1202 | static void spufs_npc_set(void *data, u64 val) |
| 1203 | { |
| 1204 | struct spu_context *ctx = data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1205 | spu_acquire(ctx); |
| 1206 | ctx->ops->npc_write(ctx, val); |
| 1207 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1208 | } |
| 1209 | |
| 1210 | static u64 spufs_npc_get(void *data) |
| 1211 | { |
| 1212 | struct spu_context *ctx = data; |
| 1213 | u64 ret; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1214 | spu_acquire(ctx); |
| 1215 | ret = ctx->ops->npc_read(ctx); |
| 1216 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1217 | return ret; |
| 1218 | } |
| 1219 | DEFINE_SIMPLE_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, "%llx\n") |
| 1220 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1221 | static void spufs_decr_set(void *data, u64 val) |
| 1222 | { |
| 1223 | struct spu_context *ctx = data; |
| 1224 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1225 | spu_acquire_saved(ctx); |
| 1226 | lscsa->decr.slot[0] = (u32) val; |
| 1227 | spu_release(ctx); |
| 1228 | } |
| 1229 | |
| 1230 | static u64 spufs_decr_get(void *data) |
| 1231 | { |
| 1232 | struct spu_context *ctx = data; |
| 1233 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1234 | u64 ret; |
| 1235 | spu_acquire_saved(ctx); |
| 1236 | ret = lscsa->decr.slot[0]; |
| 1237 | spu_release(ctx); |
| 1238 | return ret; |
| 1239 | } |
| 1240 | DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
| 1241 | "%llx\n") |
| 1242 | |
| 1243 | static void spufs_decr_status_set(void *data, u64 val) |
| 1244 | { |
| 1245 | struct spu_context *ctx = data; |
| 1246 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1247 | spu_acquire_saved(ctx); |
| 1248 | lscsa->decr_status.slot[0] = (u32) val; |
| 1249 | spu_release(ctx); |
| 1250 | } |
| 1251 | |
| 1252 | static u64 spufs_decr_status_get(void *data) |
| 1253 | { |
| 1254 | struct spu_context *ctx = data; |
| 1255 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1256 | u64 ret; |
| 1257 | spu_acquire_saved(ctx); |
| 1258 | ret = lscsa->decr_status.slot[0]; |
| 1259 | spu_release(ctx); |
| 1260 | return ret; |
| 1261 | } |
| 1262 | DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
| 1263 | spufs_decr_status_set, "%llx\n") |
| 1264 | |
| 1265 | static void spufs_spu_tag_mask_set(void *data, u64 val) |
| 1266 | { |
| 1267 | struct spu_context *ctx = data; |
| 1268 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1269 | spu_acquire_saved(ctx); |
| 1270 | lscsa->tag_mask.slot[0] = (u32) val; |
| 1271 | spu_release(ctx); |
| 1272 | } |
| 1273 | |
| 1274 | static u64 spufs_spu_tag_mask_get(void *data) |
| 1275 | { |
| 1276 | struct spu_context *ctx = data; |
| 1277 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1278 | u64 ret; |
| 1279 | spu_acquire_saved(ctx); |
| 1280 | ret = lscsa->tag_mask.slot[0]; |
| 1281 | spu_release(ctx); |
| 1282 | return ret; |
| 1283 | } |
| 1284 | DEFINE_SIMPLE_ATTRIBUTE(spufs_spu_tag_mask_ops, spufs_spu_tag_mask_get, |
| 1285 | spufs_spu_tag_mask_set, "%llx\n") |
| 1286 | |
| 1287 | static void spufs_event_mask_set(void *data, u64 val) |
| 1288 | { |
| 1289 | struct spu_context *ctx = data; |
| 1290 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1291 | spu_acquire_saved(ctx); |
| 1292 | lscsa->event_mask.slot[0] = (u32) val; |
| 1293 | spu_release(ctx); |
| 1294 | } |
| 1295 | |
| 1296 | static u64 spufs_event_mask_get(void *data) |
| 1297 | { |
| 1298 | struct spu_context *ctx = data; |
| 1299 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1300 | u64 ret; |
| 1301 | spu_acquire_saved(ctx); |
| 1302 | ret = lscsa->event_mask.slot[0]; |
| 1303 | spu_release(ctx); |
| 1304 | return ret; |
| 1305 | } |
| 1306 | DEFINE_SIMPLE_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
| 1307 | spufs_event_mask_set, "%llx\n") |
| 1308 | |
| 1309 | static void spufs_srr0_set(void *data, u64 val) |
| 1310 | { |
| 1311 | struct spu_context *ctx = data; |
| 1312 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1313 | spu_acquire_saved(ctx); |
| 1314 | lscsa->srr0.slot[0] = (u32) val; |
| 1315 | spu_release(ctx); |
| 1316 | } |
| 1317 | |
| 1318 | static u64 spufs_srr0_get(void *data) |
| 1319 | { |
| 1320 | struct spu_context *ctx = data; |
| 1321 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1322 | u64 ret; |
| 1323 | spu_acquire_saved(ctx); |
| 1324 | ret = lscsa->srr0.slot[0]; |
| 1325 | spu_release(ctx); |
| 1326 | return ret; |
| 1327 | } |
| 1328 | DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
| 1329 | "%llx\n") |
| 1330 | |
arnd@arndb.de | 7b1a701 | 2006-06-19 20:33:24 +0200 | [diff] [blame] | 1331 | static u64 spufs_id_get(void *data) |
| 1332 | { |
| 1333 | struct spu_context *ctx = data; |
| 1334 | u64 num; |
| 1335 | |
| 1336 | spu_acquire(ctx); |
| 1337 | if (ctx->state == SPU_STATE_RUNNABLE) |
| 1338 | num = ctx->spu->number; |
| 1339 | else |
| 1340 | num = (unsigned int)-1; |
| 1341 | spu_release(ctx); |
| 1342 | |
| 1343 | return num; |
| 1344 | } |
| 1345 | DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, 0, "0x%llx\n") |
| 1346 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1347 | struct tree_descr spufs_dir_contents[] = { |
| 1348 | { "mem", &spufs_mem_fops, 0666, }, |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1349 | { "regs", &spufs_regs_fops, 0666, }, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1350 | { "mbox", &spufs_mbox_fops, 0444, }, |
| 1351 | { "ibox", &spufs_ibox_fops, 0444, }, |
| 1352 | { "wbox", &spufs_wbox_fops, 0222, }, |
| 1353 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, |
| 1354 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, |
| 1355 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, |
| 1356 | { "signal1", &spufs_signal1_fops, 0666, }, |
| 1357 | { "signal2", &spufs_signal2_fops, 0666, }, |
| 1358 | { "signal1_type", &spufs_signal1_type, 0666, }, |
| 1359 | { "signal2_type", &spufs_signal2_type, 0666, }, |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1360 | { "mss", &spufs_mss_fops, 0666, }, |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1361 | { "mfc", &spufs_mfc_fops, 0666, }, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1362 | { "cntl", &spufs_cntl_fops, 0666, }, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1363 | { "npc", &spufs_npc_ops, 0666, }, |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1364 | { "fpcr", &spufs_fpcr_fops, 0666, }, |
| 1365 | { "decr", &spufs_decr_ops, 0666, }, |
| 1366 | { "decr_status", &spufs_decr_status_ops, 0666, }, |
| 1367 | { "spu_tag_mask", &spufs_spu_tag_mask_ops, 0666, }, |
| 1368 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
| 1369 | { "srr0", &spufs_srr0_ops, 0666, }, |
arnd@arndb.de | 7b1a701 | 2006-06-19 20:33:24 +0200 | [diff] [blame] | 1370 | { "phys-id", &spufs_id_ops, 0666, }, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1371 | {}, |
| 1372 | }; |