arch/powerpc/platforms/cell/spufs/file.c

   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
  23 #undef DEBUG
  24
  25 #include <linux/fs.h>
  26 #include <linux/ioctl.h>
  27 #include <linux/module.h>
  28 #include <linux/pagemap.h>
  29 #include <linux/poll.h>
  30 #include <linux/ptrace.h>
  31
  32 #include <asm/io.h>
  33 #include <asm/semaphore.h>
  34 #include <asm/spu.h>
  35 #include <asm/spu_info.h>
  36 #include <asm/uaccess.h>
  37
  38 #include "spufs.h"
  39
  40 #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000)
  41
  42 static int
  43 spufs_mem_open(struct inode *inode, struct file *file)
  44 {
  45         struct spufs_inode_info *i = SPUFS_I(inode);
  46         struct spu_context *ctx = i->i_ctx;
  47
  48         spin_lock(&ctx->mapping_lock);
  49         file->private_data = ctx;
  50         if (!i->i_openers++)
  51                 ctx->local_store = inode->i_mapping;
  52         spin_unlock(&ctx->mapping_lock);
  53         return 0;
  54 }
  55
  56 static int
  57 spufs_mem_release(struct inode *inode, struct file *file)
  58 {
  59         struct spufs_inode_info *i = SPUFS_I(inode);
  60         struct spu_context *ctx = i->i_ctx;
  61
  62         spin_lock(&ctx->mapping_lock);
  63         if (!--i->i_openers)
  64                 ctx->local_store = NULL;
  65         spin_unlock(&ctx->mapping_lock);
  66         return 0;
  67 }
  68
  69 static ssize_t
  70 __spufs_mem_read(struct spu_context *ctx, char __user *buffer,
  71                         size_t size, loff_t *pos)
  72 {
  73         char *local_store = ctx->ops->get_ls(ctx);
  74         return simple_read_from_buffer(buffer, size, pos, local_store,
  75                                         LS_SIZE);
  76 }
  77
  78 static ssize_t
  79 spufs_mem_read(struct file *file, char __user *buffer,
  80                                 size_t size, loff_t *pos)
  81 {
  82         struct spu_context *ctx = file->private_data;
  83         ssize_t ret;
  84
  85         spu_acquire(ctx);
  86         ret = __spufs_mem_read(ctx, buffer, size, pos);
  87         spu_release(ctx);
  88         return ret;
  89 }
  90
  91 static ssize_t
  92 spufs_mem_write(struct file *file, const char __user *buffer,
  93                                         size_t size, loff_t *ppos)
  94 {
  95         struct spu_context *ctx = file->private_data;
  96         char *local_store;
  97         loff_t pos = *ppos;
  98         int ret;
  99
 100         if (pos < 0)
 101                 return -EINVAL;
 102         if (pos > LS_SIZE)
 103                 return -EFBIG;
 104         if (size > LS_SIZE - pos)
 105                 size = LS_SIZE - pos;
 106
 107         spu_acquire(ctx);
 108         local_store = ctx->ops->get_ls(ctx);
 109         ret = copy_from_user(local_store + pos, buffer, size);
 110         spu_release(ctx);
 111
 112         if (ret)
 113                 return -EFAULT;
 114         *ppos = pos + size;
 115         return size;
 116 }
 117
 118 static unsigned long spufs_mem_mmap_nopfn(struct vm_area_struct *vma,
 119                                           unsigned long address)
 120 {
 121         struct spu_context *ctx = vma->vm_file->private_data;
 122         unsigned long pfn, offset = address - vma->vm_start;
 123
 124         offset += vma->vm_pgoff << PAGE_SHIFT;
 125
 126         if (offset >= LS_SIZE)
 127                 return NOPFN_SIGBUS;
 128
 129         spu_acquire(ctx);
 130
 131         if (ctx->state == SPU_STATE_SAVED) {
 132                 vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
 133                                                         & ~_PAGE_NO_CACHE);
 134                 pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset);
 135         } else {
 136                 vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
 137                                              | _PAGE_NO_CACHE);
 138                 pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT;
 139         }
 140         vm_insert_pfn(vma, address, pfn);
 141
 142         spu_release(ctx);
 143
 144         return NOPFN_REFAULT;
 145 }
 146
 147
 148 static struct vm_operations_struct spufs_mem_mmap_vmops = {
 149         .nopfn = spufs_mem_mmap_nopfn,
 150 };
 151
 152 static int
 153 spufs_mem_mmap(struct file *file, struct vm_area_struct *vma)
 154 {
 155         if (!(vma->vm_flags & VM_SHARED))
 156                 return -EINVAL;
 157
 158         vma->vm_flags |= VM_IO | VM_PFNMAP;
 159         vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
 160                                      | _PAGE_NO_CACHE);
 161
 162         vma->vm_ops = &spufs_mem_mmap_vmops;
 163         return 0;
 164 }
 165
 166 static const struct file_operations spufs_mem_fops = {
 167         .open    = spufs_mem_open,
 168         .release = spufs_mem_release,
 169         .read    = spufs_mem_read,
 170         .write   = spufs_mem_write,
 171         .llseek  = generic_file_llseek,
 172         .mmap    = spufs_mem_mmap,
 173 };
 174
 175 static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma,
 176                                     unsigned long address,
 177                                     unsigned long ps_offs,
 178                                     unsigned long ps_size)
 179 {
 180         struct spu_context *ctx = vma->vm_file->private_data;
 181         unsigned long area, offset = address - vma->vm_start;
 182         int ret;
 183
 184         offset += vma->vm_pgoff << PAGE_SHIFT;
 185         if (offset >= ps_size)
 186                 return NOPFN_SIGBUS;
 187
 188         /* error here usually means a signal.. we might want to test
 189          * the error code more precisely though
 190          */
 191         ret = spu_acquire_runnable(ctx, 0);
 192         if (ret)
 193                 return NOPFN_REFAULT;
 194
 195         area = ctx->spu->problem_phys + ps_offs;
 196         vm_insert_pfn(vma, address, (area + offset) >> PAGE_SHIFT);
 197         spu_release(ctx);
 198
 199         return NOPFN_REFAULT;
 200 }
 201
 202 #if SPUFS_MMAP_4K
 203 static unsigned long spufs_cntl_mmap_nopfn(struct vm_area_struct *vma,
 204                                            unsigned long address)
 205 {
 206         return spufs_ps_nopfn(vma, address, 0x4000, 0x1000);
 207 }
 208
 209 static struct vm_operations_struct spufs_cntl_mmap_vmops = {
 210         .nopfn = spufs_cntl_mmap_nopfn,
 211 };
 212
 213 /*
 214  * mmap support for problem state control area [0x4000 - 0x4fff].
 215  */
 216 static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma)
 217 {
 218         if (!(vma->vm_flags & VM_SHARED))
 219                 return -EINVAL;
 220
 221         vma->vm_flags |= VM_IO | VM_PFNMAP;
 222         vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
 223                                      | _PAGE_NO_CACHE | _PAGE_GUARDED);
 224
 225         vma->vm_ops = &spufs_cntl_mmap_vmops;
 226         return 0;
 227 }
 228 #else /* SPUFS_MMAP_4K */
 229 #define spufs_cntl_mmap NULL
 230 #endif /* !SPUFS_MMAP_4K */
 231
 232 static u64 spufs_cntl_get(void *data)
 233 {
 234         struct spu_context *ctx = data;
 235         u64 val;
 236
 237         spu_acquire(ctx);
 238         val = ctx->ops->status_read(ctx);
 239         spu_release(ctx);
 240
 241         return val;
 242 }
 243
 244 static void spufs_cntl_set(void *data, u64 val)
 245 {
 246         struct spu_context *ctx = data;
 247
 248         spu_acquire(ctx);
 249         ctx->ops->runcntl_write(ctx, val);
 250         spu_release(ctx);
 251 }
 252
 253 static int spufs_cntl_open(struct inode *inode, struct file *file)
 254 {
 255         struct spufs_inode_info *i = SPUFS_I(inode);
 256         struct spu_context *ctx = i->i_ctx;
 257
 258         spin_lock(&ctx->mapping_lock);
 259         file->private_data = ctx;
 260         if (!i->i_openers++)
 261                 ctx->cntl = inode->i_mapping;
 262         spin_unlock(&ctx->mapping_lock);
 263         return simple_attr_open(inode, file, spufs_cntl_get,
 264                                         spufs_cntl_set, "0x%08lx");
 265 }
 266
 267 static int
 268 spufs_cntl_release(struct inode *inode, struct file *file)
 269 {
 270         struct spufs_inode_info *i = SPUFS_I(inode);
 271         struct spu_context *ctx = i->i_ctx;
 272
 273         simple_attr_close(inode, file);
 274
 275         spin_lock(&ctx->mapping_lock);
 276         if (!--i->i_openers)
 277                 ctx->cntl = NULL;
 278         spin_unlock(&ctx->mapping_lock);
 279         return 0;
 280 }
 281
 282 static const struct file_operations spufs_cntl_fops = {
 283         .open = spufs_cntl_open,
 284         .release = spufs_cntl_release,
 285         .read = simple_attr_read,
 286         .write = simple_attr_write,
 287         .mmap = spufs_cntl_mmap,
 288 };
 289
 290 static int
 291 spufs_regs_open(struct inode *inode, struct file *file)
 292 {
 293         struct spufs_inode_info *i = SPUFS_I(inode);
 294         file->private_data = i->i_ctx;
 295         return 0;
 296 }
 297
 298 static ssize_t
 299 __spufs_regs_read(struct spu_context *ctx, char __user *buffer,
 300                         size_t size, loff_t *pos)
 301 {
 302         struct spu_lscsa *lscsa = ctx->csa.lscsa;
 303         return simple_read_from_buffer(buffer, size, pos,
 304                                       lscsa->gprs, sizeof lscsa->gprs);
 305 }
 306
 307 static ssize_t
 308 spufs_regs_read(struct file *file, char __user *buffer,
 309                 size_t size, loff_t *pos)
 310 {
 311         int ret;
 312         struct spu_context *ctx = file->private_data;
 313
 314         spu_acquire_saved(ctx);
 315         ret = __spufs_regs_read(ctx, buffer, size, pos);
 316         spu_release(ctx);
 317         return ret;
 318 }
 319
 320 static ssize_t
 321 spufs_regs_write(struct file *file, const char __user *buffer,
 322                  size_t size, loff_t *pos)
 323 {
 324         struct spu_context *ctx = file->private_data;
 325         struct spu_lscsa *lscsa = ctx->csa.lscsa;
 326         int ret;
 327
 328         size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size);
 329         if (size <= 0)
 330                 return -EFBIG;
 331         *pos += size;
 332
 333         spu_acquire_saved(ctx);
 334
 335         ret = copy_from_user(lscsa->gprs + *pos - size,
 336                              buffer, size) ? -EFAULT : size;
 337
 338         spu_release(ctx);
 339         return ret;
 340 }
 341
 342 static const struct file_operations spufs_regs_fops = {
 343         .open    = spufs_regs_open,
 344         .read    = spufs_regs_read,
 345         .write   = spufs_regs_write,
 346         .llseek  = generic_file_llseek,
 347 };
 348
 349 static ssize_t
 350 __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer,
 351                         size_t size, loff_t * pos)
 352 {
 353         struct spu_lscsa *lscsa = ctx->csa.lscsa;
 354         return simple_read_from_buffer(buffer, size, pos,
 355                                       &lscsa->fpcr, sizeof(lscsa->fpcr));
 356 }
 357
 358 static ssize_t
 359 spufs_fpcr_read(struct file *file, char __user * buffer,
 360                 size_t size, loff_t * pos)
 361 {
 362         int ret;
 363         struct spu_context *ctx = file->private_data;
 364
 365         spu_acquire_saved(ctx);
 366         ret = __spufs_fpcr_read(ctx, buffer, size, pos);
 367         spu_release(ctx);
 368         return ret;
 369 }
 370
 371 static ssize_t
 372 spufs_fpcr_write(struct file *file, const char __user * buffer,
 373                  size_t size, loff_t * pos)
 374 {
 375         struct spu_context *ctx = file->private_data;
 376         struct spu_lscsa *lscsa = ctx->csa.lscsa;
 377         int ret;
 378
 379         size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size);
 380         if (size <= 0)
 381                 return -EFBIG;
 382         *pos += size;
 383
 384         spu_acquire_saved(ctx);
 385
 386         ret = copy_from_user((char *)&lscsa->fpcr + *pos - size,
 387                              buffer, size) ? -EFAULT : size;
 388
 389         spu_release(ctx);
 390         return ret;
 391 }
 392
 393 static const struct file_operations spufs_fpcr_fops = {
 394         .open = spufs_regs_open,
 395         .read = spufs_fpcr_read,
 396         .write = spufs_fpcr_write,
 397         .llseek = generic_file_llseek,
 398 };
 399
 400 /* generic open function for all pipe-like files */
 401 static int spufs_pipe_open(struct inode *inode, struct file *file)
 402 {
 403         struct spufs_inode_info *i = SPUFS_I(inode);
 404         file->private_data = i->i_ctx;
 405
 406         return nonseekable_open(inode, file);
 407 }
 408
 409 /*
 410  * Read as many bytes from the mailbox as possible, until
 411  * one of the conditions becomes true:
 412  *
 413  * - no more data available in the mailbox
 414  * - end of the user provided buffer
 415  * - end of the mapped area
 416  */
 417 static ssize_t spufs_mbox_read(struct file *file, char __user *buf,
 418                         size_t len, loff_t *pos)
 419 {
 420         struct spu_context *ctx = file->private_data;
 421         u32 mbox_data, __user *udata;
 422         ssize_t count;
 423
 424         if (len < 4)
 425                 return -EINVAL;
 426
 427         if (!access_ok(VERIFY_WRITE, buf, len))
 428                 return -EFAULT;
 429
 430         udata = (void __user *)buf;
 431
 432         spu_acquire(ctx);
 433         for (count = 0; (count + 4) <= len; count += 4, udata++) {
 434                 int ret;
 435                 ret = ctx->ops->mbox_read(ctx, &mbox_data);
 436                 if (ret == 0)
 437                         break;
 438
 439                 /*
 440                  * at the end of the mapped area, we can fault
 441                  * but still need to return the data we have
 442                  * read successfully so far.
 443                  */
 444                 ret = __put_user(mbox_data, udata);
 445                 if (ret) {
 446                         if (!count)
 447                                 count = -EFAULT;
 448                         break;
 449                 }
 450         }
 451         spu_release(ctx);
 452
 453         if (!count)
 454                 count = -EAGAIN;
 455
 456         return count;
 457 }
 458
 459 static const struct file_operations spufs_mbox_fops = {
 460         .open   = spufs_pipe_open,
 461         .read   = spufs_mbox_read,
 462 };
 463
 464 static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf,
 465                         size_t len, loff_t *pos)
 466 {
 467         struct spu_context *ctx = file->private_data;
 468         u32 mbox_stat;
 469
 470         if (len < 4)
 471                 return -EINVAL;
 472
 473         spu_acquire(ctx);
 474
 475         mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff;
 476
 477         spu_release(ctx);
 478
 479         if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat))
 480                 return -EFAULT;
 481
 482         return 4;
 483 }
 484
 485 static const struct file_operations spufs_mbox_stat_fops = {
 486         .open   = spufs_pipe_open,
 487         .read   = spufs_mbox_stat_read,
 488 };
 489
 490 /* low-level ibox access function */
 491 size_t spu_ibox_read(struct spu_context *ctx, u32 *data)
 492 {
 493         return ctx->ops->ibox_read(ctx, data);
 494 }
 495
 496 static int spufs_ibox_fasync(int fd, struct file *file, int on)
 497 {
 498         struct spu_context *ctx = file->private_data;
 499
 500         return fasync_helper(fd, file, on, &ctx->ibox_fasync);
 501 }
 502
 503 /* interrupt-level ibox callback function. */
 504 void spufs_ibox_callback(struct spu *spu)
 505 {
 506         struct spu_context *ctx = spu->ctx;
 507
 508         wake_up_all(&ctx->ibox_wq);
 509         kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN);
 510 }
 511
 512 /*
 513  * Read as many bytes from the interrupt mailbox as possible, until
 514  * one of the conditions becomes true:
 515  *
 516  * - no more data available in the mailbox
 517  * - end of the user provided buffer
 518  * - end of the mapped area
 519  *
 520  * If the file is opened without O_NONBLOCK, we wait here until
 521  * any data is available, but return when we have been able to
 522  * read something.
 523  */
 524 static ssize_t spufs_ibox_read(struct file *file, char __user *buf,
 525                         size_t len, loff_t *pos)
 526 {
 527         struct spu_context *ctx = file->private_data;
 528         u32 ibox_data, __user *udata;
 529         ssize_t count;
 530
 531         if (len < 4)
 532                 return -EINVAL;
 533
 534         if (!access_ok(VERIFY_WRITE, buf, len))
 535                 return -EFAULT;
 536
 537         udata = (void __user *)buf;
 538
 539         spu_acquire(ctx);
 540
 541         /* wait only for the first element */
 542         count = 0;
 543         if (file->f_flags & O_NONBLOCK) {
 544                 if (!spu_ibox_read(ctx, &ibox_data))
 545                         count = -EAGAIN;
 546         } else {
 547                 count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data));
 548         }
 549         if (count)
 550                 goto out;
 551
 552         /* if we can't write at all, return -EFAULT */
 553         count = __put_user(ibox_data, udata);
 554         if (count)
 555                 goto out;
 556
 557         for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) {
 558                 int ret;
 559                 ret = ctx->ops->ibox_read(ctx, &ibox_data);
 560                 if (ret == 0)
 561                         break;
 562                 /*
 563                  * at the end of the mapped area, we can fault
 564                  * but still need to return the data we have
 565                  * read successfully so far.
 566                  */
 567                 ret = __put_user(ibox_data, udata);
 568                 if (ret)
 569                         break;
 570         }
 571
 572 out:
 573         spu_release(ctx);
 574
 575         return count;
 576 }
 577
 578 static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait)
 579 {
 580         struct spu_context *ctx = file->private_data;
 581         unsigned int mask;
 582
 583         poll_wait(file, &ctx->ibox_wq, wait);
 584
 585         spu_acquire(ctx);
 586         mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM);
 587         spu_release(ctx);
 588
 589         return mask;
 590 }
 591
 592 static const struct file_operations spufs_ibox_fops = {
 593         .open   = spufs_pipe_open,
 594         .read   = spufs_ibox_read,
 595         .poll   = spufs_ibox_poll,
 596         .fasync = spufs_ibox_fasync,
 597 };
 598
 599 static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf,
 600                         size_t len, loff_t *pos)
 601 {
 602         struct spu_context *ctx = file->private_data;
 603         u32 ibox_stat;
 604
 605         if (len < 4)
 606                 return -EINVAL;
 607
 608         spu_acquire(ctx);
 609         ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff;
 610         spu_release(ctx);
 611
 612         if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat))
 613                 return -EFAULT;
 614
 615         return 4;
 616 }
 617
 618 static const struct file_operations spufs_ibox_stat_fops = {
 619         .open   = spufs_pipe_open,
 620         .read   = spufs_ibox_stat_read,
 621 };
 622
 623 /* low-level mailbox write */
 624 size_t spu_wbox_write(struct spu_context *ctx, u32 data)
 625 {
 626         return ctx->ops->wbox_write(ctx, data);
 627 }
 628
 629 static int spufs_wbox_fasync(int fd, struct file *file, int on)
 630 {
 631         struct spu_context *ctx = file->private_data;
 632         int ret;
 633
 634         ret = fasync_helper(fd, file, on, &ctx->wbox_fasync);
 635
 636         return ret;
 637 }
 638
 639 /* interrupt-level wbox callback function. */
 640 void spufs_wbox_callback(struct spu *spu)
 641 {
 642         struct spu_context *ctx = spu->ctx;
 643
 644         wake_up_all(&ctx->wbox_wq);
 645         kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT);
 646 }
 647
 648 /*
 649  * Write as many bytes to the interrupt mailbox as possible, until
 650  * one of the conditions becomes true:
 651  *
 652  * - the mailbox is full
 653  * - end of the user provided buffer
 654  * - end of the mapped area
 655  *
 656  * If the file is opened without O_NONBLOCK, we wait here until
 657  * space is availabyl, but return when we have been able to
 658  * write something.
 659  */
 660 static ssize_t spufs_wbox_write(struct file *file, const char __user *buf,
 661                         size_t len, loff_t *pos)
 662 {
 663         struct spu_context *ctx = file->private_data;
 664         u32 wbox_data, __user *udata;
 665         ssize_t count;
 666
 667         if (len < 4)
 668                 return -EINVAL;
 669
 670         udata = (void __user *)buf;
 671         if (!access_ok(VERIFY_READ, buf, len))
 672                 return -EFAULT;
 673
 674         if (__get_user(wbox_data, udata))
 675                 return -EFAULT;
 676
 677         spu_acquire(ctx);
 678
 679         /*
 680          * make sure we can at least write one element, by waiting
 681          * in case of !O_NONBLOCK
 682          */
 683         count = 0;
 684         if (file->f_flags & O_NONBLOCK) {
 685                 if (!spu_wbox_write(ctx, wbox_data))
 686                         count = -EAGAIN;
 687         } else {
 688                 count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data));
 689         }
 690
 691         if (count)
 692                 goto out;
 693
 694         /* write aѕ much as possible */
 695         for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) {
 696                 int ret;
 697                 ret = __get_user(wbox_data, udata);
 698                 if (ret)
 699                         break;
 700
 701                 ret = spu_wbox_write(ctx, wbox_data);
 702                 if (ret == 0)
 703                         break;
 704         }
 705
 706 out:
 707         spu_release(ctx);
 708         return count;
 709 }
 710
 711 static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait)
 712 {
 713         struct spu_context *ctx = file->private_data;
 714         unsigned int mask;
 715
 716         poll_wait(file, &ctx->wbox_wq, wait);
 717
 718         spu_acquire(ctx);
 719         mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM);
 720         spu_release(ctx);
 721
 722         return mask;
 723 }
 724
 725 static const struct file_operations spufs_wbox_fops = {
 726         .open   = spufs_pipe_open,
 727         .write  = spufs_wbox_write,
 728         .poll   = spufs_wbox_poll,
 729         .fasync = spufs_wbox_fasync,
 730 };
 731
 732 static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf,
 733                         size_t len, loff_t *pos)
 734 {
 735         struct spu_context *ctx = file->private_data;
 736         u32 wbox_stat;
 737
 738         if (len < 4)
 739                 return -EINVAL;
 740
 741         spu_acquire(ctx);
 742         wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff;
 743         spu_release(ctx);
 744
 745         if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat))
 746                 return -EFAULT;
 747
 748         return 4;
 749 }
 750
 751 static const struct file_operations spufs_wbox_stat_fops = {
 752         .open   = spufs_pipe_open,
 753         .read   = spufs_wbox_stat_read,
 754 };
 755
 756 static int spufs_signal1_open(struct inode *inode, struct file *file)
 757 {
 758         struct spufs_inode_info *i = SPUFS_I(inode);
 759         struct spu_context *ctx = i->i_ctx;
 760
 761         spin_lock(&ctx->mapping_lock);
 762         file->private_data = ctx;
 763         if (!i->i_openers++)
 764                 ctx->signal1 = inode->i_mapping;
 765         spin_unlock(&ctx->mapping_lock);
 766         return nonseekable_open(inode, file);
 767 }
 768
 769 static int
 770 spufs_signal1_release(struct inode *inode, struct file *file)
 771 {
 772         struct spufs_inode_info *i = SPUFS_I(inode);
 773         struct spu_context *ctx = i->i_ctx;
 774
 775         spin_lock(&ctx->mapping_lock);
 776         if (!--i->i_openers)
 777                 ctx->signal1 = NULL;
 778         spin_unlock(&ctx->mapping_lock);
 779         return 0;
 780 }
 781
 782 static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf,
 783                         size_t len, loff_t *pos)
 784 {
 785         int ret = 0;
 786         u32 data;
 787
 788         if (len < 4)
 789                 return -EINVAL;
 790
 791         if (ctx->csa.spu_chnlcnt_RW[3]) {
 792                 data = ctx->csa.spu_chnldata_RW[3];
 793                 ret = 4;
 794         }
 795
 796         if (!ret)
 797                 goto out;
 798
 799         if (copy_to_user(buf, &data, 4))
 800                 return -EFAULT;
 801
 802 out:
 803         return ret;
 804 }
 805
 806 static ssize_t spufs_signal1_read(struct file *file, char __user *buf,
 807                         size_t len, loff_t *pos)
 808 {
 809         int ret;
 810         struct spu_context *ctx = file->private_data;
 811
 812         spu_acquire_saved(ctx);
 813         ret = __spufs_signal1_read(ctx, buf, len, pos);
 814         spu_release(ctx);
 815
 816         return ret;
 817 }
 818
 819 static ssize_t spufs_signal1_write(struct file *file, const char __user *buf,
 820                         size_t len, loff_t *pos)
 821 {
 822         struct spu_context *ctx;
 823         u32 data;
 824
 825         ctx = file->private_data;
 826
 827         if (len < 4)
 828                 return -EINVAL;
 829
 830         if (copy_from_user(&data, buf, 4))
 831                 return -EFAULT;
 832
 833         spu_acquire(ctx);
 834         ctx->ops->signal1_write(ctx, data);
 835         spu_release(ctx);
 836
 837         return 4;
 838 }
 839
 840 static unsigned long spufs_signal1_mmap_nopfn(struct vm_area_struct *vma,
 841                                               unsigned long address)
 842 {
 843 #if PAGE_SIZE == 0x1000
 844         return spufs_ps_nopfn(vma, address, 0x14000, 0x1000);
 845 #elif PAGE_SIZE == 0x10000
 846         /* For 64k pages, both signal1 and signal2 can be used to mmap the whole
 847          * signal 1 and 2 area
 848          */
 849         return spufs_ps_nopfn(vma, address, 0x10000, 0x10000);
 850 #else
 851 #error unsupported page size
 852 #endif
 853 }
 854
 855 static struct vm_operations_struct spufs_signal1_mmap_vmops = {
 856         .nopfn = spufs_signal1_mmap_nopfn,
 857 };
 858
 859 static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma)
 860 {
 861         if (!(vma->vm_flags & VM_SHARED))
 862                 return -EINVAL;
 863
 864         vma->vm_flags |= VM_IO | VM_PFNMAP;
 865         vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
 866                                      | _PAGE_NO_CACHE | _PAGE_GUARDED);
 867
 868         vma->vm_ops = &spufs_signal1_mmap_vmops;
 869         return 0;
 870 }
 871
 872 static const struct file_operations spufs_signal1_fops = {
 873         .open = spufs_signal1_open,
 874         .release = spufs_signal1_release,
 875         .read = spufs_signal1_read,
 876         .write = spufs_signal1_write,
 877         .mmap = spufs_signal1_mmap,
 878 };
 879
 880 static int spufs_signal2_open(struct inode *inode, struct file *file)
 881 {
 882         struct spufs_inode_info *i = SPUFS_I(inode);
 883         struct spu_context *ctx = i->i_ctx;
 884
 885         spin_lock(&ctx->mapping_lock);
 886         file->private_data = ctx;
 887         if (!i->i_openers++)
 888                 ctx->signal2 = inode->i_mapping;
 889         spin_unlock(&ctx->mapping_lock);
 890         return nonseekable_open(inode, file);
 891 }
 892
 893 static int
 894 spufs_signal2_release(struct inode *inode, struct file *file)
 895 {
 896         struct spufs_inode_info *i = SPUFS_I(inode);
 897         struct spu_context *ctx = i->i_ctx;
 898
 899         spin_lock(&ctx->mapping_lock);
 900         if (!--i->i_openers)
 901                 ctx->signal2 = NULL;
 902         spin_unlock(&ctx->mapping_lock);
 903         return 0;
 904 }
 905
 906 static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf,
 907                         size_t len, loff_t *pos)
 908 {
 909         int ret = 0;
 910         u32 data;
 911
 912         if (len < 4)
 913                 return -EINVAL;
 914
 915         if (ctx->csa.spu_chnlcnt_RW[4]) {
 916                 data =  ctx->csa.spu_chnldata_RW[4];
 917                 ret = 4;
 918         }
 919
 920         if (!ret)
 921                 goto out;
 922
 923         if (copy_to_user(buf, &data, 4))
 924                 return -EFAULT;
 925
 926 out:
 927         return ret;
 928 }
 929
 930 static ssize_t spufs_signal2_read(struct file *file, char __user *buf,
 931                         size_t len, loff_t *pos)
 932 {
 933         struct spu_context *ctx = file->private_data;
 934         int ret;
 935
 936         spu_acquire_saved(ctx);
 937         ret = __spufs_signal2_read(ctx, buf, len, pos);
 938         spu_release(ctx);
 939
 940         return ret;
 941 }
 942
 943 static ssize_t spufs_signal2_write(struct file *file, const char __user *buf,
 944                         size_t len, loff_t *pos)
 945 {
 946         struct spu_context *ctx;
 947         u32 data;
 948
 949         ctx = file->private_data;
 950
 951         if (len < 4)
 952                 return -EINVAL;
 953
 954         if (copy_from_user(&data, buf, 4))
 955                 return -EFAULT;
 956
 957         spu_acquire(ctx);
 958         ctx->ops->signal2_write(ctx, data);
 959         spu_release(ctx);
 960
 961         return 4;
 962 }
 963
 964 #if SPUFS_MMAP_4K
 965 static unsigned long spufs_signal2_mmap_nopfn(struct vm_area_struct *vma,
 966                                               unsigned long address)
 967 {
 968 #if PAGE_SIZE == 0x1000
 969         return spufs_ps_nopfn(vma, address, 0x1c000, 0x1000);
 970 #elif PAGE_SIZE == 0x10000
 971         /* For 64k pages, both signal1 and signal2 can be used to mmap the whole
 972          * signal 1 and 2 area
 973          */
 974         return spufs_ps_nopfn(vma, address, 0x10000, 0x10000);
 975 #else
 976 #error unsupported page size
 977 #endif
 978 }
 979
 980 static struct vm_operations_struct spufs_signal2_mmap_vmops = {
 981         .nopfn = spufs_signal2_mmap_nopfn,
 982 };
 983
 984 static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma)
 985 {
 986         if (!(vma->vm_flags & VM_SHARED))
 987                 return -EINVAL;
 988
 989         vma->vm_flags |= VM_IO | VM_PFNMAP;
 990         vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
 991                                      | _PAGE_NO_CACHE | _PAGE_GUARDED);
 992
 993         vma->vm_ops = &spufs_signal2_mmap_vmops;
 994         return 0;
 995 }
 996 #else /* SPUFS_MMAP_4K */
 997 #define spufs_signal2_mmap NULL
 998 #endif /* !SPUFS_MMAP_4K */
 999
1000 static const struct file_operations spufs_signal2_fops = {
1001         .open = spufs_signal2_open,
1002         .release = spufs_signal2_release,
1003         .read = spufs_signal2_read,
1004         .write = spufs_signal2_write,
1005         .mmap = spufs_signal2_mmap,
1006 };
1007
1008 static void spufs_signal1_type_set(void *data, u64 val)
1009 {
1010         struct spu_context *ctx = data;
1011
1012         spu_acquire(ctx);
1013         ctx->ops->signal1_type_set(ctx, val);
1014         spu_release(ctx);
1015 }
1016
1017 static u64 __spufs_signal1_type_get(void *data)
1018 {
1019         struct spu_context *ctx = data;
1020         return ctx->ops->signal1_type_get(ctx);
1021 }
1022
1023 static u64 spufs_signal1_type_get(void *data)
1024 {
1025         struct spu_context *ctx = data;
1026         u64 ret;
1027
1028         spu_acquire(ctx);
1029         ret = __spufs_signal1_type_get(data);
1030         spu_release(ctx);
1031
1032         return ret;
1033 }
1034 DEFINE_SIMPLE_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get,
1035                                         spufs_signal1_type_set, "%llu");
1036
1037 static void spufs_signal2_type_set(void *data, u64 val)
1038 {
1039         struct spu_context *ctx = data;
1040
1041         spu_acquire(ctx);
1042         ctx->ops->signal2_type_set(ctx, val);
1043         spu_release(ctx);
1044 }
1045
1046 static u64 __spufs_signal2_type_get(void *data)
1047 {
1048         struct spu_context *ctx = data;
1049         return ctx->ops->signal2_type_get(ctx);
1050 }
1051
1052 static u64 spufs_signal2_type_get(void *data)
1053 {
1054         struct spu_context *ctx = data;
1055         u64 ret;
1056
1057         spu_acquire(ctx);
1058         ret = __spufs_signal2_type_get(data);
1059         spu_release(ctx);
1060
1061         return ret;
1062 }
1063 DEFINE_SIMPLE_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get,
1064                                         spufs_signal2_type_set, "%llu");
1065
1066 #if SPUFS_MMAP_4K
1067 static unsigned long spufs_mss_mmap_nopfn(struct vm_area_struct *vma,
1068                                           unsigned long address)
1069 {
1070         return spufs_ps_nopfn(vma, address, 0x0000, 0x1000);
1071 }
1072
1073 static struct vm_operations_struct spufs_mss_mmap_vmops = {
1074         .nopfn = spufs_mss_mmap_nopfn,
1075 };
1076
1077 /*
1078  * mmap support for problem state MFC DMA area [0x0000 - 0x0fff].
1079  */
1080 static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma)
1081 {
1082         if (!(vma->vm_flags & VM_SHARED))
1083                 return -EINVAL;
1084
1085         vma->vm_flags |= VM_IO | VM_PFNMAP;
1086         vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
1087                                      | _PAGE_NO_CACHE | _PAGE_GUARDED);
1088
1089         vma->vm_ops = &spufs_mss_mmap_vmops;
1090         return 0;
1091 }
1092 #else /* SPUFS_MMAP_4K */
1093 #define spufs_mss_mmap NULL
1094 #endif /* !SPUFS_MMAP_4K */
1095
1096 static int spufs_mss_open(struct inode *inode, struct file *file)
1097 {
1098         struct spufs_inode_info *i = SPUFS_I(inode);
1099         struct spu_context *ctx = i->i_ctx;
1100
1101         file->private_data = i->i_ctx;
1102
1103         spin_lock(&ctx->mapping_lock);
1104         if (!i->i_openers++)
1105                 ctx->mss = inode->i_mapping;
1106         spin_unlock(&ctx->mapping_lock);
1107         return nonseekable_open(inode, file);
1108 }
1109
1110 static int
1111 spufs_mss_release(struct inode *inode, struct file *file)
1112 {
1113         struct spufs_inode_info *i = SPUFS_I(inode);
1114         struct spu_context *ctx = i->i_ctx;
1115
1116         spin_lock(&ctx->mapping_lock);
1117         if (!--i->i_openers)
1118                 ctx->mss = NULL;
1119         spin_unlock(&ctx->mapping_lock);
1120         return 0;
1121 }
1122
1123 static const struct file_operations spufs_mss_fops = {
1124         .open    = spufs_mss_open,
1125         .release = spufs_mss_release,
1126         .mmap    = spufs_mss_mmap,
1127 };
1128
1129 static unsigned long spufs_psmap_mmap_nopfn(struct vm_area_struct *vma,
1130                                             unsigned long address)
1131 {
1132         return spufs_ps_nopfn(vma, address, 0x0000, 0x20000);
1133 }
1134
1135 static struct vm_operations_struct spufs_psmap_mmap_vmops = {
1136         .nopfn = spufs_psmap_mmap_nopfn,
1137 };
1138
1139 /*
1140  * mmap support for full problem state area [0x00000 - 0x1ffff].
1141  */
1142 static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma)
1143 {
1144         if (!(vma->vm_flags & VM_SHARED))
1145                 return -EINVAL;
1146
1147         vma->vm_flags |= VM_IO | VM_PFNMAP;
1148         vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
1149                                      | _PAGE_NO_CACHE | _PAGE_GUARDED);
1150
1151         vma->vm_ops = &spufs_psmap_mmap_vmops;
1152         return 0;
1153 }
1154
1155 static int spufs_psmap_open(struct inode *inode, struct file *file)
1156 {
1157         struct spufs_inode_info *i = SPUFS_I(inode);
1158         struct spu_context *ctx = i->i_ctx;
1159
1160         spin_lock(&ctx->mapping_lock);
1161         file->private_data = i->i_ctx;
1162         if (!i->i_openers++)
1163                 ctx->psmap = inode->i_mapping;
1164         spin_unlock(&ctx->mapping_lock);
1165         return nonseekable_open(inode, file);
1166 }
1167
1168 static int
1169 spufs_psmap_release(struct inode *inode, struct file *file)
1170 {
1171         struct spufs_inode_info *i = SPUFS_I(inode);
1172         struct spu_context *ctx = i->i_ctx;
1173
1174         spin_lock(&ctx->mapping_lock);
1175         if (!--i->i_openers)
1176                 ctx->psmap = NULL;
1177         spin_unlock(&ctx->mapping_lock);
1178         return 0;
1179 }
1180
1181 static const struct file_operations spufs_psmap_fops = {
1182         .open    = spufs_psmap_open,
1183         .release = spufs_psmap_release,
1184         .mmap    = spufs_psmap_mmap,
1185 };
1186
1187
1188 #if SPUFS_MMAP_4K
1189 static unsigned long spufs_mfc_mmap_nopfn(struct vm_area_struct *vma,
1190                                           unsigned long address)
1191 {
1192         return spufs_ps_nopfn(vma, address, 0x3000, 0x1000);
1193 }
1194
1195 static struct vm_operations_struct spufs_mfc_mmap_vmops = {
1196         .nopfn = spufs_mfc_mmap_nopfn,
1197 };
1198
1199 /*
1200  * mmap support for problem state MFC DMA area [0x0000 - 0x0fff].
1201  */
1202 static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma)
1203 {
1204         if (!(vma->vm_flags & VM_SHARED))
1205                 return -EINVAL;
1206
1207         vma->vm_flags |= VM_IO | VM_PFNMAP;
1208         vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
1209                                      | _PAGE_NO_CACHE | _PAGE_GUARDED);
1210
1211         vma->vm_ops = &spufs_mfc_mmap_vmops;
1212         return 0;
1213 }
1214 #else /* SPUFS_MMAP_4K */
1215 #define spufs_mfc_mmap NULL
1216 #endif /* !SPUFS_MMAP_4K */
1217
1218 static int spufs_mfc_open(struct inode *inode, struct file *file)
1219 {
1220         struct spufs_inode_info *i = SPUFS_I(inode);
1221         struct spu_context *ctx = i->i_ctx;
1222
1223         /* we don't want to deal with DMA into other processes */
1224         if (ctx->owner != current->mm)
1225                 return -EINVAL;
1226
1227         if (atomic_read(&inode->i_count) != 1)
1228                 return -EBUSY;
1229
1230         spin_lock(&ctx->mapping_lock);
1231         file->private_data = ctx;
1232         if (!i->i_openers++)
1233                 ctx->mfc = inode->i_mapping;
1234         spin_unlock(&ctx->mapping_lock);
1235         return nonseekable_open(inode, file);
1236 }
1237
1238 static int
1239 spufs_mfc_release(struct inode *inode, struct file *file)
1240 {
1241         struct spufs_inode_info *i = SPUFS_I(inode);
1242         struct spu_context *ctx = i->i_ctx;
1243
1244         spin_lock(&ctx->mapping_lock);
1245         if (!--i->i_openers)
1246                 ctx->mfc = NULL;
1247         spin_unlock(&ctx->mapping_lock);
1248         return 0;
1249 }
1250
1251 /* interrupt-level mfc callback function. */
1252 void spufs_mfc_callback(struct spu *spu)
1253 {
1254         struct spu_context *ctx = spu->ctx;
1255
1256         wake_up_all(&ctx->mfc_wq);
1257
1258         pr_debug("%s %s\n", __FUNCTION__, spu->name);
1259         if (ctx->mfc_fasync) {
1260                 u32 free_elements, tagstatus;
1261                 unsigned int mask;
1262
1263                 /* no need for spu_acquire in interrupt context */
1264                 free_elements = ctx->ops->get_mfc_free_elements(ctx);
1265                 tagstatus = ctx->ops->read_mfc_tagstatus(ctx);
1266
1267                 mask = 0;
1268                 if (free_elements & 0xffff)
1269                         mask |= POLLOUT;
1270                 if (tagstatus & ctx->tagwait)
1271                         mask |= POLLIN;
1272
1273                 kill_fasync(&ctx->mfc_fasync, SIGIO, mask);
1274         }
1275 }
1276
1277 static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status)
1278 {
1279         /* See if there is one tag group is complete */
1280         /* FIXME we need locking around tagwait */
1281         *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait;
1282         ctx->tagwait &= ~*status;
1283         if (*status)
1284                 return 1;
1285
1286         /* enable interrupt waiting for any tag group,
1287            may silently fail if interrupts are already enabled */
1288         ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1);
1289         return 0;
1290 }
1291
1292 static ssize_t spufs_mfc_read(struct file *file, char __user *buffer,
1293                         size_t size, loff_t *pos)
1294 {
1295         struct spu_context *ctx = file->private_data;
1296         int ret = -EINVAL;
1297         u32 status;
1298
1299         if (size != 4)
1300                 goto out;
1301
1302         spu_acquire(ctx);
1303         if (file->f_flags & O_NONBLOCK) {
1304                 status = ctx->ops->read_mfc_tagstatus(ctx);
1305                 if (!(status & ctx->tagwait))
1306                         ret = -EAGAIN;
1307                 else
1308                         ctx->tagwait &= ~status;
1309         } else {
1310                 ret = spufs_wait(ctx->mfc_wq,
1311                            spufs_read_mfc_tagstatus(ctx, &status));
1312         }
1313         spu_release(ctx);
1314
1315         if (ret)
1316                 goto out;
1317
1318         ret = 4;
1319         if (copy_to_user(buffer, &status, 4))
1320                 ret = -EFAULT;
1321
1322 out:
1323         return ret;
1324 }
1325
1326 static int spufs_check_valid_dma(struct mfc_dma_command *cmd)
1327 {
1328         pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa,
1329                  cmd->ea, cmd->size, cmd->tag, cmd->cmd);
1330
1331         switch (cmd->cmd) {
1332         case MFC_PUT_CMD:
1333         case MFC_PUTF_CMD:
1334         case MFC_PUTB_CMD:
1335         case MFC_GET_CMD:
1336         case MFC_GETF_CMD:
1337         case MFC_GETB_CMD:
1338                 break;
1339         default:
1340                 pr_debug("invalid DMA opcode %x\n", cmd->cmd);
1341                 return -EIO;
1342         }
1343
1344         if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) {
1345                 pr_debug("invalid DMA alignment, ea %lx lsa %x\n",
1346                                 cmd->ea, cmd->lsa);
1347                 return -EIO;
1348         }
1349
1350         switch (cmd->size & 0xf) {
1351         case 1:
1352                 break;
1353         case 2:
1354                 if (cmd->lsa & 1)
1355                         goto error;
1356                 break;
1357         case 4:
1358                 if (cmd->lsa & 3)
1359                         goto error;
1360                 break;
1361         case 8:
1362                 if (cmd->lsa & 7)
1363                         goto error;
1364                 break;
1365         case 0:
1366                 if (cmd->lsa & 15)
1367                         goto error;
1368                 break;
1369         error:
1370         default:
1371                 pr_debug("invalid DMA alignment %x for size %x\n",
1372                         cmd->lsa & 0xf, cmd->size);
1373                 return -EIO;
1374         }
1375
1376         if (cmd->size > 16 * 1024) {
1377                 pr_debug("invalid DMA size %x\n", cmd->size);
1378                 return -EIO;
1379         }
1380
1381         if (cmd->tag & 0xfff0) {
1382                 /* we reserve the higher tag numbers for kernel use */
1383                 pr_debug("invalid DMA tag\n");
1384                 return -EIO;
1385         }
1386
1387         if (cmd->class) {
1388                 /* not supported in this version */
1389                 pr_debug("invalid DMA class\n");
1390                 return -EIO;
1391         }
1392
1393         return 0;
1394 }
1395
1396 static int spu_send_mfc_command(struct spu_context *ctx,
1397                                 struct mfc_dma_command cmd,
1398                                 int *error)
1399 {
1400         *error = ctx->ops->send_mfc_command(ctx, &cmd);
1401         if (*error == -EAGAIN) {
1402                 /* wait for any tag group to complete
1403                    so we have space for the new command */
1404                 ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1);
1405                 /* try again, because the queue might be
1406                    empty again */
1407                 *error = ctx->ops->send_mfc_command(ctx, &cmd);
1408                 if (*error == -EAGAIN)
1409                         return 0;
1410         }
1411         return 1;
1412 }
1413
1414 static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer,
1415                         size_t size, loff_t *pos)
1416 {
1417         struct spu_context *ctx = file->private_data;
1418         struct mfc_dma_command cmd;
1419         int ret = -EINVAL;
1420
1421         if (size != sizeof cmd)
1422                 goto out;
1423
1424         ret = -EFAULT;
1425         if (copy_from_user(&cmd, buffer, sizeof cmd))
1426                 goto out;
1427
1428         ret = spufs_check_valid_dma(&cmd);
1429         if (ret)
1430                 goto out;
1431
1432         ret = spu_acquire_runnable(ctx, 0);
1433         if (ret)
1434                 goto out;
1435
1436         if (file->f_flags & O_NONBLOCK) {
1437                 ret = ctx->ops->send_mfc_command(ctx, &cmd);
1438         } else {
1439                 int status;
1440                 ret = spufs_wait(ctx->mfc_wq,
1441                                  spu_send_mfc_command(ctx, cmd, &status));
1442                 if (status)
1443                         ret = status;
1444         }
1445         spu_release(ctx);
1446
1447         if (ret)
1448                 goto out;
1449
1450         ctx->tagwait |= 1 << cmd.tag;
1451         ret = size;
1452
1453 out:
1454         return ret;
1455 }
1456
1457 static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait)
1458 {
1459         struct spu_context *ctx = file->private_data;
1460         u32 free_elements, tagstatus;
1461         unsigned int mask;
1462
1463         spu_acquire(ctx);
1464         ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2);
1465         free_elements = ctx->ops->get_mfc_free_elements(ctx);
1466         tagstatus = ctx->ops->read_mfc_tagstatus(ctx);
1467         spu_release(ctx);
1468
1469         poll_wait(file, &ctx->mfc_wq, wait);
1470
1471         mask = 0;
1472         if (free_elements & 0xffff)
1473                 mask |= POLLOUT | POLLWRNORM;
1474         if (tagstatus & ctx->tagwait)
1475                 mask |= POLLIN | POLLRDNORM;
1476
1477         pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__,
1478                 free_elements, tagstatus, ctx->tagwait);
1479
1480         return mask;
1481 }
1482
1483 static int spufs_mfc_flush(struct file *file, fl_owner_t id)
1484 {
1485         struct spu_context *ctx = file->private_data;
1486         int ret;
1487
1488         spu_acquire(ctx);
1489 #if 0
1490 /* this currently hangs */
1491         ret = spufs_wait(ctx->mfc_wq,
1492                          ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2));
1493         if (ret)
1494                 goto out;
1495         ret = spufs_wait(ctx->mfc_wq,
1496                          ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait);
1497 out:
1498 #else
1499         ret = 0;
1500 #endif
1501         spu_release(ctx);
1502
1503         return ret;
1504 }
1505
1506 static int spufs_mfc_fsync(struct file *file, struct dentry *dentry,
1507                            int datasync)
1508 {
1509         return spufs_mfc_flush(file, NULL);
1510 }
1511
1512 static int spufs_mfc_fasync(int fd, struct file *file, int on)
1513 {
1514         struct spu_context *ctx = file->private_data;
1515
1516         return fasync_helper(fd, file, on, &ctx->mfc_fasync);
1517 }
1518
1519 static const struct file_operations spufs_mfc_fops = {
1520         .open    = spufs_mfc_open,
1521         .release = spufs_mfc_release,
1522         .read    = spufs_mfc_read,
1523         .write   = spufs_mfc_write,
1524         .poll    = spufs_mfc_poll,
1525         .flush   = spufs_mfc_flush,
1526         .fsync   = spufs_mfc_fsync,
1527         .fasync  = spufs_mfc_fasync,
1528         .mmap    = spufs_mfc_mmap,
1529 };
1530
1531 static void spufs_npc_set(void *data, u64 val)
1532 {
1533         struct spu_context *ctx = data;
1534         spu_acquire(ctx);
1535         ctx->ops->npc_write(ctx, val);
1536         spu_release(ctx);
1537 }
1538
1539 static u64 spufs_npc_get(void *data)
1540 {
1541         struct spu_context *ctx = data;
1542         u64 ret;
1543         spu_acquire(ctx);
1544         ret = ctx->ops->npc_read(ctx);
1545         spu_release(ctx);
1546         return ret;
1547 }
1548 DEFINE_SIMPLE_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set,
1549                         "0x%llx\n")
1550
1551 static void spufs_decr_set(void *data, u64 val)
1552 {
1553         struct spu_context *ctx = data;
1554         struct spu_lscsa *lscsa = ctx->csa.lscsa;
1555         spu_acquire_saved(ctx);
1556         lscsa->decr.slot[0] = (u32) val;
1557         spu_release(ctx);
1558 }
1559
1560 static u64 __spufs_decr_get(void *data)
1561 {
1562         struct spu_context *ctx = data;
1563         struct spu_lscsa *lscsa = ctx->csa.lscsa;
1564         return lscsa->decr.slot[0];
1565 }
1566
1567 static u64 spufs_decr_get(void *data)
1568 {
1569         struct spu_context *ctx = data;
1570         u64 ret;
1571         spu_acquire_saved(ctx);
1572         ret = __spufs_decr_get(data);
1573         spu_release(ctx);
1574         return ret;
1575 }
1576 DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set,
1577                         "0x%llx\n")
1578
1579 static void spufs_decr_status_set(void *data, u64 val)
1580 {
1581         struct spu_context *ctx = data;
1582         struct spu_lscsa *lscsa = ctx->csa.lscsa;
1583         spu_acquire_saved(ctx);
1584         lscsa->decr_status.slot[0] = (u32) val;
1585         spu_release(ctx);
1586 }
1587
1588 static u64 __spufs_decr_status_get(void *data)
1589 {
1590         struct spu_context *ctx = data;
1591         struct spu_lscsa *lscsa = ctx->csa.lscsa;
1592         return lscsa->decr_status.slot[0];
1593 }
1594
1595 static u64 spufs_decr_status_get(void *data)
1596 {
1597         struct spu_context *ctx = data;
1598         u64 ret;
1599         spu_acquire_saved(ctx);
1600         ret = __spufs_decr_status_get(data);
1601         spu_release(ctx);
1602         return ret;
1603 }
1604 DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get,
1605                         spufs_decr_status_set, "0x%llx\n")
1606
1607 static void spufs_event_mask_set(void *data, u64 val)
1608 {
1609         struct spu_context *ctx = data;
1610         struct spu_lscsa *lscsa = ctx->csa.lscsa;
1611         spu_acquire_saved(ctx);
1612         lscsa->event_mask.slot[0] = (u32) val;
1613         spu_release(ctx);
1614 }
1615
1616 static u64 __spufs_event_mask_get(void *data)
1617 {
1618         struct spu_context *ctx = data;
1619         struct spu_lscsa *lscsa = ctx->csa.lscsa;
1620         return lscsa->event_mask.slot[0];
1621 }
1622
1623 static u64 spufs_event_mask_get(void *data)
1624 {
1625         struct spu_context *ctx = data;
1626         u64 ret;
1627         spu_acquire_saved(ctx);
1628         ret = __spufs_event_mask_get(data);
1629         spu_release(ctx);
1630         return ret;
1631 }
1632 DEFINE_SIMPLE_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get,
1633                         spufs_event_mask_set, "0x%llx\n")
1634
1635 static u64 __spufs_event_status_get(void *data)
1636 {
1637         struct spu_context *ctx = data;
1638         struct spu_state *state = &ctx->csa;
1639         u64 stat;
1640         stat = state->spu_chnlcnt_RW[0];
1641         if (stat)
1642                 return state->spu_chnldata_RW[0];
1643         return 0;
1644 }
1645
1646 static u64 spufs_event_status_get(void *data)
1647 {
1648         struct spu_context *ctx = data;
1649         u64 ret = 0;
1650
1651         spu_acquire_saved(ctx);
1652         ret = __spufs_event_status_get(data);
1653         spu_release(ctx);
1654         return ret;
1655 }
1656 DEFINE_SIMPLE_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get,
1657                         NULL, "0x%llx\n")
1658
1659 static void spufs_srr0_set(void *data, u64 val)
1660 {
1661         struct spu_context *ctx = data;
1662         struct spu_lscsa *lscsa = ctx->csa.lscsa;
1663         spu_acquire_saved(ctx);
1664         lscsa->srr0.slot[0] = (u32) val;
1665         spu_release(ctx);
1666 }
1667
1668 static u64 spufs_srr0_get(void *data)
1669 {
1670         struct spu_context *ctx = data;
1671         struct spu_lscsa *lscsa = ctx->csa.lscsa;
1672         u64 ret;
1673         spu_acquire_saved(ctx);
1674         ret = lscsa->srr0.slot[0];
1675         spu_release(ctx);
1676         return ret;
1677 }
1678 DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set,
1679                         "0x%llx\n")
1680
1681 static u64 spufs_id_get(void *data)
1682 {
1683         struct spu_context *ctx = data;
1684         u64 num;
1685
1686         spu_acquire(ctx);
1687         if (ctx->state == SPU_STATE_RUNNABLE)
1688                 num = ctx->spu->number;
1689         else
1690                 num = (unsigned int)-1;
1691         spu_release(ctx);
1692
1693         return num;
1694 }
1695 DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n")
1696
1697 static u64 __spufs_object_id_get(void *data)
1698 {
1699         struct spu_context *ctx = data;
1700         return ctx->object_id;
1701 }
1702
1703 static u64 spufs_object_id_get(void *data)
1704 {
1705         /* FIXME: Should there really be no locking here? */
1706         return __spufs_object_id_get(data);
1707 }
1708
1709 static void spufs_object_id_set(void *data, u64 id)
1710 {
1711         struct spu_context *ctx = data;
1712         ctx->object_id = id;
1713 }
1714
1715 DEFINE_SIMPLE_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get,
1716                 spufs_object_id_set, "0x%llx\n");
1717
1718 static u64 __spufs_lslr_get(void *data)
1719 {
1720         struct spu_context *ctx = data;
1721         return ctx->csa.priv2.spu_lslr_RW;
1722 }
1723
1724 static u64 spufs_lslr_get(void *data)
1725 {
1726         struct spu_context *ctx = data;
1727         u64 ret;
1728
1729         spu_acquire_saved(ctx);
1730         ret = __spufs_lslr_get(data);
1731         spu_release(ctx);
1732
1733         return ret;
1734 }
1735 DEFINE_SIMPLE_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n")
1736
1737 static int spufs_info_open(struct inode *inode, struct file *file)
1738 {
1739         struct spufs_inode_info *i = SPUFS_I(inode);
1740         struct spu_context *ctx = i->i_ctx;
1741         file->private_data = ctx;
1742         return 0;
1743 }
1744
1745 static ssize_t __spufs_mbox_info_read(struct spu_context *ctx,
1746                         char __user *buf, size_t len, loff_t *pos)
1747 {
1748         u32 mbox_stat;
1749         u32 data;
1750
1751         mbox_stat = ctx->csa.prob.mb_stat_R;
1752         if (mbox_stat & 0x0000ff) {
1753                 data = ctx->csa.prob.pu_mb_R;
1754         }
1755
1756         return simple_read_from_buffer(buf, len, pos, &data, sizeof data);
1757 }
1758
1759 static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf,
1760                                    size_t len, loff_t *pos)
1761 {
1762         int ret;
1763         struct spu_context *ctx = file->private_data;
1764
1765         if (!access_ok(VERIFY_WRITE, buf, len))
1766                 return -EFAULT;
1767
1768         spu_acquire_saved(ctx);
1769         spin_lock(&ctx->csa.register_lock);
1770         ret = __spufs_mbox_info_read(ctx, buf, len, pos);
1771         spin_unlock(&ctx->csa.register_lock);
1772         spu_release(ctx);
1773
1774         return ret;
1775 }
1776
1777 static const struct file_operations spufs_mbox_info_fops = {
1778         .open = spufs_info_open,
1779         .read = spufs_mbox_info_read,
1780         .llseek  = generic_file_llseek,
1781 };
1782
1783 static ssize_t __spufs_ibox_info_read(struct spu_context *ctx,
1784                                 char __user *buf, size_t len, loff_t *pos)
1785 {
1786         u32 ibox_stat;
1787         u32 data;
1788
1789         ibox_stat = ctx->csa.prob.mb_stat_R;
1790         if (ibox_stat & 0xff0000) {
1791                 data = ctx->csa.priv2.puint_mb_R;
1792         }
1793
1794         return simple_read_from_buffer(buf, len, pos, &data, sizeof data);
1795 }
1796
1797 static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
1798                                    size_t len, loff_t *pos)
1799 {
1800         struct spu_context *ctx = file->private_data;
1801         int ret;
1802
1803         if (!access_ok(VERIFY_WRITE, buf, len))
1804                 return -EFAULT;
1805
1806         spu_acquire_saved(ctx);
1807         spin_lock(&ctx->csa.register_lock);
1808         ret = __spufs_ibox_info_read(ctx, buf, len, pos);
1809         spin_unlock(&ctx->csa.register_lock);
1810         spu_release(ctx);
1811
1812         return ret;
1813 }
1814
1815 static const struct file_operations spufs_ibox_info_fops = {
1816         .open = spufs_info_open,
1817         .read = spufs_ibox_info_read,
1818         .llseek  = generic_file_llseek,
1819 };
1820
1821 static ssize_t __spufs_wbox_info_read(struct spu_context *ctx,
1822                         char __user *buf, size_t len, loff_t *pos)
1823 {
1824         int i, cnt;
1825         u32 data[4];
1826         u32 wbox_stat;
1827
1828         wbox_stat = ctx->csa.prob.mb_stat_R;
1829         cnt = 4 - ((wbox_stat & 0x00ff00) >> 8);
1830         for (i = 0; i < cnt; i++) {
1831                 data[i] = ctx->csa.spu_mailbox_data[i];
1832         }
1833
1834         return simple_read_from_buffer(buf, len, pos, &data,
1835                                 cnt * sizeof(u32));
1836 }
1837
1838 static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
1839                                    size_t len, loff_t *pos)
1840 {
1841         struct spu_context *ctx = file->private_data;
1842         int ret;
1843
1844         if (!access_ok(VERIFY_WRITE, buf, len))
1845                 return -EFAULT;
1846
1847         spu_acquire_saved(ctx);
1848         spin_lock(&ctx->csa.register_lock);
1849         ret = __spufs_wbox_info_read(ctx, buf, len, pos);
1850         spin_unlock(&ctx->csa.register_lock);
1851         spu_release(ctx);
1852
1853         return ret;
1854 }
1855
1856 static const struct file_operations spufs_wbox_info_fops = {
1857         .open = spufs_info_open,
1858         .read = spufs_wbox_info_read,
1859         .llseek  = generic_file_llseek,
1860 };
1861
1862 static ssize_t __spufs_dma_info_read(struct spu_context *ctx,
1863                         char __user *buf, size_t len, loff_t *pos)
1864 {
1865         struct spu_dma_info info;
1866         struct mfc_cq_sr *qp, *spuqp;
1867         int i;
1868
1869         info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW;
1870         info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0];
1871         info.dma_info_status = ctx->csa.spu_chnldata_RW[24];
1872         info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25];
1873         info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27];
1874         for (i = 0; i < 16; i++) {
1875                 qp = &info.dma_info_command_data[i];
1876                 spuqp = &ctx->csa.priv2.spuq[i];
1877
1878                 qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW;
1879                 qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW;
1880                 qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW;
1881                 qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW;
1882         }
1883
1884         return simple_read_from_buffer(buf, len, pos, &info,
1885                                 sizeof info);
1886 }
1887
1888 static ssize_t spufs_dma_info_read(struct file *file, char __user *buf,
1889                               size_t len, loff_t *pos)
1890 {
1891         struct spu_context *ctx = file->private_data;
1892         int ret;
1893
1894         if (!access_ok(VERIFY_WRITE, buf, len))
1895                 return -EFAULT;
1896
1897         spu_acquire_saved(ctx);
1898         spin_lock(&ctx->csa.register_lock);
1899         ret = __spufs_dma_info_read(ctx, buf, len, pos);
1900         spin_unlock(&ctx->csa.register_lock);
1901         spu_release(ctx);
1902
1903         return ret;
1904 }
1905
1906 static const struct file_operations spufs_dma_info_fops = {
1907         .open = spufs_info_open,
1908         .read = spufs_dma_info_read,
1909 };
1910
1911 static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx,
1912                         char __user *buf, size_t len, loff_t *pos)
1913 {
1914         struct spu_proxydma_info info;
1915         struct mfc_cq_sr *qp, *puqp;
1916         int ret = sizeof info;
1917         int i;
1918
1919         if (len < ret)
1920                 return -EINVAL;
1921
1922         if (!access_ok(VERIFY_WRITE, buf, len))
1923                 return -EFAULT;
1924
1925         info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW;
1926         info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW;
1927         info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R;
1928         for (i = 0; i < 8; i++) {
1929                 qp = &info.proxydma_info_command_data[i];
1930                 puqp = &ctx->csa.priv2.puq[i];
1931
1932                 qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW;
1933                 qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW;
1934                 qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW;
1935                 qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW;
1936         }
1937
1938         return simple_read_from_buffer(buf, len, pos, &info,
1939                                 sizeof info);
1940 }
1941
1942 static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf,
1943                                    size_t len, loff_t *pos)
1944 {
1945         struct spu_context *ctx = file->private_data;
1946         int ret;
1947
1948         spu_acquire_saved(ctx);
1949         spin_lock(&ctx->csa.register_lock);
1950         ret = __spufs_proxydma_info_read(ctx, buf, len, pos);
1951         spin_unlock(&ctx->csa.register_lock);
1952         spu_release(ctx);
1953
1954         return ret;
1955 }
1956
1957 static const struct file_operations spufs_proxydma_info_fops = {
1958         .open = spufs_info_open,
1959         .read = spufs_proxydma_info_read,
1960 };
1961
1962 struct tree_descr spufs_dir_contents[] = {
1963         { "mem",  &spufs_mem_fops,  0666, },
1964         { "regs", &spufs_regs_fops,  0666, },
1965         { "mbox", &spufs_mbox_fops, 0444, },
1966         { "ibox", &spufs_ibox_fops, 0444, },
1967         { "wbox", &spufs_wbox_fops, 0222, },
1968         { "mbox_stat", &spufs_mbox_stat_fops, 0444, },
1969         { "ibox_stat", &spufs_ibox_stat_fops, 0444, },
1970         { "wbox_stat", &spufs_wbox_stat_fops, 0444, },
1971         { "signal1", &spufs_signal1_fops, 0666, },
1972         { "signal2", &spufs_signal2_fops, 0666, },
1973         { "signal1_type", &spufs_signal1_type, 0666, },
1974         { "signal2_type", &spufs_signal2_type, 0666, },
1975         { "cntl", &spufs_cntl_fops,  0666, },
1976         { "fpcr", &spufs_fpcr_fops, 0666, },
1977         { "lslr", &spufs_lslr_ops, 0444, },
1978         { "mfc", &spufs_mfc_fops, 0666, },
1979         { "mss", &spufs_mss_fops, 0666, },
1980         { "npc", &spufs_npc_ops, 0666, },
1981         { "srr0", &spufs_srr0_ops, 0666, },
1982         { "decr", &spufs_decr_ops, 0666, },
1983         { "decr_status", &spufs_decr_status_ops, 0666, },
1984         { "event_mask", &spufs_event_mask_ops, 0666, },
1985         { "event_status", &spufs_event_status_ops, 0444, },
1986         { "psmap", &spufs_psmap_fops, 0666, },
1987         { "phys-id", &spufs_id_ops, 0666, },
1988         { "object-id", &spufs_object_id_ops, 0666, },
1989         { "mbox_info", &spufs_mbox_info_fops, 0444, },
1990         { "ibox_info", &spufs_ibox_info_fops, 0444, },
1991         { "wbox_info", &spufs_wbox_info_fops, 0444, },
1992         { "dma_info", &spufs_dma_info_fops, 0444, },
1993         { "proxydma_info", &spufs_proxydma_info_fops, 0444, },
1994         {},
1995 };
1996
1997 struct tree_descr spufs_dir_nosched_contents[] = {
1998         { "mem",  &spufs_mem_fops,  0666, },
1999         { "mbox", &spufs_mbox_fops, 0444, },
2000         { "ibox", &spufs_ibox_fops, 0444, },
2001         { "wbox", &spufs_wbox_fops, 0222, },
2002         { "mbox_stat", &spufs_mbox_stat_fops, 0444, },
2003         { "ibox_stat", &spufs_ibox_stat_fops, 0444, },
2004         { "wbox_stat", &spufs_wbox_stat_fops, 0444, },
2005         { "signal1", &spufs_signal1_fops, 0666, },
2006         { "signal2", &spufs_signal2_fops, 0666, },
2007         { "signal1_type", &spufs_signal1_type, 0666, },
2008         { "signal2_type", &spufs_signal2_type, 0666, },
2009         { "mss", &spufs_mss_fops, 0666, },
2010         { "mfc", &spufs_mfc_fops, 0666, },
2011         { "cntl", &spufs_cntl_fops,  0666, },
2012         { "npc", &spufs_npc_ops, 0666, },
2013         { "psmap", &spufs_psmap_fops, 0666, },
2014         { "phys-id", &spufs_id_ops, 0666, },
2015         { "object-id", &spufs_object_id_ops, 0666, },
2016         {},
2017 };
2018
2019 struct spufs_coredump_reader spufs_coredump_read[] = {
2020         { "regs", __spufs_regs_read, NULL, 128 * 16 },
2021         { "fpcr", __spufs_fpcr_read, NULL, 16 },
2022         { "lslr", NULL, __spufs_lslr_get, 11 },
2023         { "decr", NULL, __spufs_decr_get, 11 },
2024         { "decr_status", NULL, __spufs_decr_status_get, 11 },
2025         { "mem", __spufs_mem_read, NULL, 256 * 1024, },
2026         { "signal1", __spufs_signal1_read, NULL, 4 },
2027         { "signal1_type", NULL, __spufs_signal1_type_get, 2 },
2028         { "signal2", __spufs_signal2_read, NULL, 4 },
2029         { "signal2_type", NULL, __spufs_signal2_type_get, 2 },
2030         { "event_mask", NULL, __spufs_event_mask_get, 8 },
2031         { "event_status", NULL, __spufs_event_status_get, 8 },
2032         { "mbox_info", __spufs_mbox_info_read, NULL, 4 },
2033         { "ibox_info", __spufs_ibox_info_read, NULL, 4 },
2034         { "wbox_info", __spufs_wbox_info_read, NULL, 16 },
2035         { "dma_info", __spufs_dma_info_read, NULL, 69 * 8 },
2036         { "proxydma_info", __spufs_proxydma_info_read, NULL, 35 * 8 },
2037         { "object-id", NULL, __spufs_object_id_get, 19 },
2038         { },
2039 };
2040 int spufs_coredump_num_notes = ARRAY_SIZE(spufs_coredump_read) - 1;
2041