SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/char/drm/i830_dma.c

   1 /* i830_dma.c -- DMA support for the I830 -*- linux-c -*-
   2  * Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com
   3  *
   4  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   5  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25  * DEALINGS IN THE SOFTWARE.
  26  *
  27  * Authors: Rickard E. (Rik) Faith <faith@valinux.com>
  28  *          Jeff Hartmann <jhartmann@valinux.com>
  29  *          Keith Whitwell <keith@tungstengraphics.com>
  30  *          Abraham vd Merwe <abraham@2d3d.co.za>
  31  *
  32  */
  33
  34 #include "drmP.h"
  35 #include "drm.h"
  36 #include "i830_drm.h"
  37 #include "i830_drv.h"
  38 #include <linux/interrupt.h>    /* For task queue support */
  39 #include <linux/pagemap.h>      /* For FASTCALL on unlock_page() */
  40 #include <linux/delay.h>
  41 #include <asm/uaccess.h>
  42
  43 #define I830_BUF_FREE           2
  44 #define I830_BUF_CLIENT         1
  45 #define I830_BUF_HARDWARE       0
  46
  47 #define I830_BUF_UNMAPPED 0
  48 #define I830_BUF_MAPPED   1
  49
  50 static drm_buf_t *i830_freelist_get(drm_device_t * dev)
  51 {
  52         drm_device_dma_t *dma = dev->dma;
  53         int i;
  54         int used;
  55
  56         /* Linear search might not be the best solution */
  57
  58         for (i = 0; i < dma->buf_count; i++) {
  59                 drm_buf_t *buf = dma->buflist[i];
  60                 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
  61                 /* In use is already a pointer */
  62                 used = cmpxchg(buf_priv->in_use, I830_BUF_FREE,
  63                                I830_BUF_CLIENT);
  64                 if (used == I830_BUF_FREE) {
  65                         return buf;
  66                 }
  67         }
  68         return NULL;
  69 }
  70
  71 /* This should only be called if the buffer is not sent to the hardware
  72  * yet, the hardware updates in use for us once its on the ring buffer.
  73  */
  74
  75 static int i830_freelist_put(drm_device_t * dev, drm_buf_t * buf)
  76 {
  77         drm_i830_buf_priv_t *buf_priv = buf->dev_private;
  78         int used;
  79
  80         /* In use is already a pointer */
  81         used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT, I830_BUF_FREE);
  82         if (used != I830_BUF_CLIENT) {
  83                 DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
  84                 return -EINVAL;
  85         }
  86
  87         return 0;
  88 }
  89
  90 static int i830_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
  91 {
  92         drm_file_t *priv = filp->private_data;
  93         drm_device_t *dev;
  94         drm_i830_private_t *dev_priv;
  95         drm_buf_t *buf;
  96         drm_i830_buf_priv_t *buf_priv;
  97
  98         lock_kernel();
  99         dev = priv->head->dev;
 100         dev_priv = dev->dev_private;
 101         buf = dev_priv->mmap_buffer;
 102         buf_priv = buf->dev_private;
 103
 104         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 105         vma->vm_file = filp;
 106
 107         buf_priv->currently_mapped = I830_BUF_MAPPED;
 108         unlock_kernel();
 109
 110         if (io_remap_pfn_range(vma, vma->vm_start,
 111                                VM_OFFSET(vma) >> PAGE_SHIFT,
 112                                vma->vm_end - vma->vm_start, vma->vm_page_prot))
 113                 return -EAGAIN;
 114         return 0;
 115 }
 116
 117 static struct file_operations i830_buffer_fops = {
 118         .open = drm_open,
 119         .release = drm_release,
 120         .ioctl = drm_ioctl,
 121         .mmap = i830_mmap_buffers,
 122         .fasync = drm_fasync,
 123 };
 124
 125 static int i830_map_buffer(drm_buf_t * buf, struct file *filp)
 126 {
 127         drm_file_t *priv = filp->private_data;
 128         drm_device_t *dev = priv->head->dev;
 129         drm_i830_buf_priv_t *buf_priv = buf->dev_private;
 130         drm_i830_private_t *dev_priv = dev->dev_private;
 131         struct file_operations *old_fops;
 132         unsigned long virtual;
 133         int retcode = 0;
 134
 135         if (buf_priv->currently_mapped == I830_BUF_MAPPED)
 136                 return -EINVAL;
 137
 138         down_write(&current->mm->mmap_sem);
 139         old_fops = filp->f_op;
 140         filp->f_op = &i830_buffer_fops;
 141         dev_priv->mmap_buffer = buf;
 142         virtual = do_mmap(filp, 0, buf->total, PROT_READ | PROT_WRITE,
 143                           MAP_SHARED, buf->bus_address);
 144         dev_priv->mmap_buffer = NULL;
 145         filp->f_op = old_fops;
 146         if (IS_ERR((void *)virtual)) {  /* ugh */
 147                 /* Real error */
 148                 DRM_ERROR("mmap error\n");
 149                 retcode = virtual;
 150                 buf_priv->virtual = NULL;
 151         } else {
 152                 buf_priv->virtual = (void __user *)virtual;
 153         }
 154         up_write(&current->mm->mmap_sem);
 155
 156         return retcode;
 157 }
 158
 159 static int i830_unmap_buffer(drm_buf_t * buf)
 160 {
 161         drm_i830_buf_priv_t *buf_priv = buf->dev_private;
 162         int retcode = 0;
 163
 164         if (buf_priv->currently_mapped != I830_BUF_MAPPED)
 165                 return -EINVAL;
 166
 167         down_write(&current->mm->mmap_sem);
 168         retcode = do_munmap(current->mm,
 169                             (unsigned long)buf_priv->virtual,
 170                             (size_t) buf->total);
 171         up_write(&current->mm->mmap_sem);
 172
 173         buf_priv->currently_mapped = I830_BUF_UNMAPPED;
 174         buf_priv->virtual = NULL;
 175
 176         return retcode;
 177 }
 178
 179 static int i830_dma_get_buffer(drm_device_t * dev, drm_i830_dma_t * d,
 180                                struct file *filp)
 181 {
 182         drm_buf_t *buf;
 183         drm_i830_buf_priv_t *buf_priv;
 184         int retcode = 0;
 185
 186         buf = i830_freelist_get(dev);
 187         if (!buf) {
 188                 retcode = -ENOMEM;
 189                 DRM_DEBUG("retcode=%d\n", retcode);
 190                 return retcode;
 191         }
 192
 193         retcode = i830_map_buffer(buf, filp);
 194         if (retcode) {
 195                 i830_freelist_put(dev, buf);
 196                 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
 197                 return retcode;
 198         }
 199         buf->filp = filp;
 200         buf_priv = buf->dev_private;
 201         d->granted = 1;
 202         d->request_idx = buf->idx;
 203         d->request_size = buf->total;
 204         d->virtual = buf_priv->virtual;
 205
 206         return retcode;
 207 }
 208
 209 static int i830_dma_cleanup(drm_device_t * dev)
 210 {
 211         drm_device_dma_t *dma = dev->dma;
 212
 213         /* Make sure interrupts are disabled here because the uninstall ioctl
 214          * may not have been called from userspace and after dev_private
 215          * is freed, it's too late.
 216          */
 217         if (dev->irq_enabled)
 218                 drm_irq_uninstall(dev);
 219
 220         if (dev->dev_private) {
 221                 int i;
 222                 drm_i830_private_t *dev_priv =
 223                     (drm_i830_private_t *) dev->dev_private;
 224
 225                 if (dev_priv->ring.virtual_start) {
 226                         drm_ioremapfree((void *)dev_priv->ring.virtual_start,
 227                                         dev_priv->ring.Size, dev);
 228                 }
 229                 if (dev_priv->hw_status_page) {
 230                         pci_free_consistent(dev->pdev, PAGE_SIZE,
 231                                             dev_priv->hw_status_page,
 232                                             dev_priv->dma_status_page);
 233                         /* Need to rewrite hardware status page */
 234                         I830_WRITE(0x02080, 0x1ffff000);
 235                 }
 236
 237                 drm_free(dev->dev_private, sizeof(drm_i830_private_t),
 238                          DRM_MEM_DRIVER);
 239                 dev->dev_private = NULL;
 240
 241                 for (i = 0; i < dma->buf_count; i++) {
 242                         drm_buf_t *buf = dma->buflist[i];
 243                         drm_i830_buf_priv_t *buf_priv = buf->dev_private;
 244                         if (buf_priv->kernel_virtual && buf->total)
 245                                 drm_ioremapfree(buf_priv->kernel_virtual,
 246                                                 buf->total, dev);
 247                 }
 248         }
 249         return 0;
 250 }
 251
 252 int i830_wait_ring(drm_device_t * dev, int n, const char *caller)
 253 {
 254         drm_i830_private_t *dev_priv = dev->dev_private;
 255         drm_i830_ring_buffer_t *ring = &(dev_priv->ring);
 256         int iters = 0;
 257         unsigned long end;
 258         unsigned int last_head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 259
 260         end = jiffies + (HZ * 3);
 261         while (ring->space < n) {
 262                 ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 263                 ring->space = ring->head - (ring->tail + 8);
 264                 if (ring->space < 0)
 265                         ring->space += ring->Size;
 266
 267                 if (ring->head != last_head) {
 268                         end = jiffies + (HZ * 3);
 269                         last_head = ring->head;
 270                 }
 271
 272                 iters++;
 273                 if (time_before(end, jiffies)) {
 274                         DRM_ERROR("space: %d wanted %d\n", ring->space, n);
 275                         DRM_ERROR("lockup\n");
 276                         goto out_wait_ring;
 277                 }
 278                 udelay(1);
 279                 dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT;
 280         }
 281
 282       out_wait_ring:
 283         return iters;
 284 }
 285
 286 static void i830_kernel_lost_context(drm_device_t * dev)
 287 {
 288         drm_i830_private_t *dev_priv = dev->dev_private;
 289         drm_i830_ring_buffer_t *ring = &(dev_priv->ring);
 290
 291         ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 292         ring->tail = I830_READ(LP_RING + RING_TAIL) & TAIL_ADDR;
 293         ring->space = ring->head - (ring->tail + 8);
 294         if (ring->space < 0)
 295                 ring->space += ring->Size;
 296
 297         if (ring->head == ring->tail)
 298                 dev_priv->sarea_priv->perf_boxes |= I830_BOX_RING_EMPTY;
 299 }
 300
 301 static int i830_freelist_init(drm_device_t * dev, drm_i830_private_t * dev_priv)
 302 {
 303         drm_device_dma_t *dma = dev->dma;
 304         int my_idx = 36;
 305         u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
 306         int i;
 307
 308         if (dma->buf_count > 1019) {
 309                 /* Not enough space in the status page for the freelist */
 310                 return -EINVAL;
 311         }
 312
 313         for (i = 0; i < dma->buf_count; i++) {
 314                 drm_buf_t *buf = dma->buflist[i];
 315                 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
 316
 317                 buf_priv->in_use = hw_status++;
 318                 buf_priv->my_use_idx = my_idx;
 319                 my_idx += 4;
 320
 321                 *buf_priv->in_use = I830_BUF_FREE;
 322
 323                 buf_priv->kernel_virtual = drm_ioremap(buf->bus_address,
 324                                                        buf->total, dev);
 325         }
 326         return 0;
 327 }
 328
 329 static int i830_dma_initialize(drm_device_t * dev,
 330                                drm_i830_private_t * dev_priv,
 331                                drm_i830_init_t * init)
 332 {
 333         struct list_head *list;
 334
 335         memset(dev_priv, 0, sizeof(drm_i830_private_t));
 336
 337         list_for_each(list, &dev->maplist->head) {
 338                 drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
 339                 if (r_list->map &&
 340                     r_list->map->type == _DRM_SHM &&
 341                     r_list->map->flags & _DRM_CONTAINS_LOCK) {
 342                         dev_priv->sarea_map = r_list->map;
 343                         break;
 344                 }
 345         }
 346
 347         if (!dev_priv->sarea_map) {
 348                 dev->dev_private = (void *)dev_priv;
 349                 i830_dma_cleanup(dev);
 350                 DRM_ERROR("can not find sarea!\n");
 351                 return -EINVAL;
 352         }
 353         dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
 354         if (!dev_priv->mmio_map) {
 355                 dev->dev_private = (void *)dev_priv;
 356                 i830_dma_cleanup(dev);
 357                 DRM_ERROR("can not find mmio map!\n");
 358                 return -EINVAL;
 359         }
 360         dev->agp_buffer_token = init->buffers_offset;
 361         dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
 362         if (!dev->agp_buffer_map) {
 363                 dev->dev_private = (void *)dev_priv;
 364                 i830_dma_cleanup(dev);
 365                 DRM_ERROR("can not find dma buffer map!\n");
 366                 return -EINVAL;
 367         }
 368
 369         dev_priv->sarea_priv = (drm_i830_sarea_t *)
 370             ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
 371
 372         dev_priv->ring.Start = init->ring_start;
 373         dev_priv->ring.End = init->ring_end;
 374         dev_priv->ring.Size = init->ring_size;
 375
 376         dev_priv->ring.virtual_start = drm_ioremap(dev->agp->base +
 377                                                    init->ring_start,
 378                                                    init->ring_size, dev);
 379
 380         if (dev_priv->ring.virtual_start == NULL) {
 381                 dev->dev_private = (void *)dev_priv;
 382                 i830_dma_cleanup(dev);
 383                 DRM_ERROR("can not ioremap virtual address for"
 384                           " ring buffer\n");
 385                 return -ENOMEM;
 386         }
 387
 388         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 389
 390         dev_priv->w = init->w;
 391         dev_priv->h = init->h;
 392         dev_priv->pitch = init->pitch;
 393         dev_priv->back_offset = init->back_offset;
 394         dev_priv->depth_offset = init->depth_offset;
 395         dev_priv->front_offset = init->front_offset;
 396
 397         dev_priv->front_di1 = init->front_offset | init->pitch_bits;
 398         dev_priv->back_di1 = init->back_offset | init->pitch_bits;
 399         dev_priv->zi1 = init->depth_offset | init->pitch_bits;
 400
 401         DRM_DEBUG("front_di1 %x\n", dev_priv->front_di1);
 402         DRM_DEBUG("back_offset %x\n", dev_priv->back_offset);
 403         DRM_DEBUG("back_di1 %x\n", dev_priv->back_di1);
 404         DRM_DEBUG("pitch_bits %x\n", init->pitch_bits);
 405
 406         dev_priv->cpp = init->cpp;
 407         /* We are using separate values as placeholders for mechanisms for
 408          * private backbuffer/depthbuffer usage.
 409          */
 410
 411         dev_priv->back_pitch = init->back_pitch;
 412         dev_priv->depth_pitch = init->depth_pitch;
 413         dev_priv->do_boxes = 0;
 414         dev_priv->use_mi_batchbuffer_start = 0;
 415
 416         /* Program Hardware Status Page */
 417         dev_priv->hw_status_page =
 418             pci_alloc_consistent(dev->pdev, PAGE_SIZE,
 419                                  &dev_priv->dma_status_page);
 420         if (!dev_priv->hw_status_page) {
 421                 dev->dev_private = (void *)dev_priv;
 422                 i830_dma_cleanup(dev);
 423                 DRM_ERROR("Can not allocate hardware status page\n");
 424                 return -ENOMEM;
 425         }
 426         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
 427         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
 428
 429         I830_WRITE(0x02080, dev_priv->dma_status_page);
 430         DRM_DEBUG("Enabled hardware status page\n");
 431
 432         /* Now we need to init our freelist */
 433         if (i830_freelist_init(dev, dev_priv) != 0) {
 434                 dev->dev_private = (void *)dev_priv;
 435                 i830_dma_cleanup(dev);
 436                 DRM_ERROR("Not enough space in the status page for"
 437                           " the freelist\n");
 438                 return -ENOMEM;
 439         }
 440         dev->dev_private = (void *)dev_priv;
 441
 442         return 0;
 443 }
 444
 445 static int i830_dma_init(struct inode *inode, struct file *filp,
 446                          unsigned int cmd, unsigned long arg)
 447 {
 448         drm_file_t *priv = filp->private_data;
 449         drm_device_t *dev = priv->head->dev;
 450         drm_i830_private_t *dev_priv;
 451         drm_i830_init_t init;
 452         int retcode = 0;
 453
 454         if (copy_from_user(&init, (void *__user)arg, sizeof(init)))
 455                 return -EFAULT;
 456
 457         switch (init.func) {
 458         case I830_INIT_DMA:
 459                 dev_priv = drm_alloc(sizeof(drm_i830_private_t),
 460                                      DRM_MEM_DRIVER);
 461                 if (dev_priv == NULL)
 462                         return -ENOMEM;
 463                 retcode = i830_dma_initialize(dev, dev_priv, &init);
 464                 break;
 465         case I830_CLEANUP_DMA:
 466                 retcode = i830_dma_cleanup(dev);
 467                 break;
 468         default:
 469                 retcode = -EINVAL;
 470                 break;
 471         }
 472
 473         return retcode;
 474 }
 475
 476 #define GFX_OP_STIPPLE           ((0x3<<29)|(0x1d<<24)|(0x83<<16))
 477 #define ST1_ENABLE               (1<<16)
 478 #define ST1_MASK                 (0xffff)
 479
 480 /* Most efficient way to verify state for the i830 is as it is
 481  * emitted.  Non-conformant state is silently dropped.
 482  */
 483 static void i830EmitContextVerified(drm_device_t * dev, unsigned int *code)
 484 {
 485         drm_i830_private_t *dev_priv = dev->dev_private;
 486         int i, j = 0;
 487         unsigned int tmp;
 488         RING_LOCALS;
 489
 490         BEGIN_LP_RING(I830_CTX_SETUP_SIZE + 4);
 491
 492         for (i = 0; i < I830_CTXREG_BLENDCOLR0; i++) {
 493                 tmp = code[i];
 494                 if ((tmp & (7 << 29)) == CMD_3D &&
 495                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
 496                         OUT_RING(tmp);
 497                         j++;
 498                 } else {
 499                         DRM_ERROR("Skipping %d\n", i);
 500                 }
 501         }
 502
 503         OUT_RING(STATE3D_CONST_BLEND_COLOR_CMD);
 504         OUT_RING(code[I830_CTXREG_BLENDCOLR]);
 505         j += 2;
 506
 507         for (i = I830_CTXREG_VF; i < I830_CTXREG_MCSB0; i++) {
 508                 tmp = code[i];
 509                 if ((tmp & (7 << 29)) == CMD_3D &&
 510                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
 511                         OUT_RING(tmp);
 512                         j++;
 513                 } else {
 514                         DRM_ERROR("Skipping %d\n", i);
 515                 }
 516         }
 517
 518         OUT_RING(STATE3D_MAP_COORD_SETBIND_CMD);
 519         OUT_RING(code[I830_CTXREG_MCSB1]);
 520         j += 2;
 521
 522         if (j & 1)
 523                 OUT_RING(0);
 524
 525         ADVANCE_LP_RING();
 526 }
 527
 528 static void i830EmitTexVerified(drm_device_t * dev, unsigned int *code)
 529 {
 530         drm_i830_private_t *dev_priv = dev->dev_private;
 531         int i, j = 0;
 532         unsigned int tmp;
 533         RING_LOCALS;
 534
 535         if (code[I830_TEXREG_MI0] == GFX_OP_MAP_INFO ||
 536             (code[I830_TEXREG_MI0] & ~(0xf * LOAD_TEXTURE_MAP0)) ==
 537             (STATE3D_LOAD_STATE_IMMEDIATE_2 | 4)) {
 538
 539                 BEGIN_LP_RING(I830_TEX_SETUP_SIZE);
 540
 541                 OUT_RING(code[I830_TEXREG_MI0]);        /* TM0LI */
 542                 OUT_RING(code[I830_TEXREG_MI1]);        /* TM0S0 */
 543                 OUT_RING(code[I830_TEXREG_MI2]);        /* TM0S1 */
 544                 OUT_RING(code[I830_TEXREG_MI3]);        /* TM0S2 */
 545                 OUT_RING(code[I830_TEXREG_MI4]);        /* TM0S3 */
 546                 OUT_RING(code[I830_TEXREG_MI5]);        /* TM0S4 */
 547
 548                 for (i = 6; i < I830_TEX_SETUP_SIZE; i++) {
 549                         tmp = code[i];
 550                         OUT_RING(tmp);
 551                         j++;
 552                 }
 553
 554                 if (j & 1)
 555                         OUT_RING(0);
 556
 557                 ADVANCE_LP_RING();
 558         } else
 559                 printk("rejected packet %x\n", code[0]);
 560 }
 561
 562 static void i830EmitTexBlendVerified(drm_device_t * dev,
 563                                      unsigned int *code, unsigned int num)
 564 {
 565         drm_i830_private_t *dev_priv = dev->dev_private;
 566         int i, j = 0;
 567         unsigned int tmp;
 568         RING_LOCALS;
 569
 570         if (!num)
 571                 return;
 572
 573         BEGIN_LP_RING(num + 1);
 574
 575         for (i = 0; i < num; i++) {
 576                 tmp = code[i];
 577                 OUT_RING(tmp);
 578                 j++;
 579         }
 580
 581         if (j & 1)
 582                 OUT_RING(0);
 583
 584         ADVANCE_LP_RING();
 585 }
 586
 587 static void i830EmitTexPalette(drm_device_t * dev,
 588                                unsigned int *palette, int number, int is_shared)
 589 {
 590         drm_i830_private_t *dev_priv = dev->dev_private;
 591         int i;
 592         RING_LOCALS;
 593
 594         return;
 595
 596         BEGIN_LP_RING(258);
 597
 598         if (is_shared == 1) {
 599                 OUT_RING(CMD_OP_MAP_PALETTE_LOAD |
 600                          MAP_PALETTE_NUM(0) | MAP_PALETTE_BOTH);
 601         } else {
 602                 OUT_RING(CMD_OP_MAP_PALETTE_LOAD | MAP_PALETTE_NUM(number));
 603         }
 604         for (i = 0; i < 256; i++) {
 605                 OUT_RING(palette[i]);
 606         }
 607         OUT_RING(0);
 608         /* KW:  WHERE IS THE ADVANCE_LP_RING?  This is effectively a noop!
 609          */
 610 }
 611
 612 /* Need to do some additional checking when setting the dest buffer.
 613  */
 614 static void i830EmitDestVerified(drm_device_t * dev, unsigned int *code)
 615 {
 616         drm_i830_private_t *dev_priv = dev->dev_private;
 617         unsigned int tmp;
 618         RING_LOCALS;
 619
 620         BEGIN_LP_RING(I830_DEST_SETUP_SIZE + 10);
 621
 622         tmp = code[I830_DESTREG_CBUFADDR];
 623         if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
 624                 if (((int)outring) & 8) {
 625                         OUT_RING(0);
 626                         OUT_RING(0);
 627                 }
 628
 629                 OUT_RING(CMD_OP_DESTBUFFER_INFO);
 630                 OUT_RING(BUF_3D_ID_COLOR_BACK |
 631                          BUF_3D_PITCH(dev_priv->back_pitch * dev_priv->cpp) |
 632                          BUF_3D_USE_FENCE);
 633                 OUT_RING(tmp);
 634                 OUT_RING(0);
 635
 636                 OUT_RING(CMD_OP_DESTBUFFER_INFO);
 637                 OUT_RING(BUF_3D_ID_DEPTH | BUF_3D_USE_FENCE |
 638                          BUF_3D_PITCH(dev_priv->depth_pitch * dev_priv->cpp));
 639                 OUT_RING(dev_priv->zi1);
 640                 OUT_RING(0);
 641         } else {
 642                 DRM_ERROR("bad di1 %x (allow %x or %x)\n",
 643                           tmp, dev_priv->front_di1, dev_priv->back_di1);
 644         }
 645
 646         /* invarient:
 647          */
 648
 649         OUT_RING(GFX_OP_DESTBUFFER_VARS);
 650         OUT_RING(code[I830_DESTREG_DV1]);
 651
 652         OUT_RING(GFX_OP_DRAWRECT_INFO);
 653         OUT_RING(code[I830_DESTREG_DR1]);
 654         OUT_RING(code[I830_DESTREG_DR2]);
 655         OUT_RING(code[I830_DESTREG_DR3]);
 656         OUT_RING(code[I830_DESTREG_DR4]);
 657
 658         /* Need to verify this */
 659         tmp = code[I830_DESTREG_SENABLE];
 660         if ((tmp & ~0x3) == GFX_OP_SCISSOR_ENABLE) {
 661                 OUT_RING(tmp);
 662         } else {
 663                 DRM_ERROR("bad scissor enable\n");
 664                 OUT_RING(0);
 665         }
 666
 667         OUT_RING(GFX_OP_SCISSOR_RECT);
 668         OUT_RING(code[I830_DESTREG_SR1]);
 669         OUT_RING(code[I830_DESTREG_SR2]);
 670         OUT_RING(0);
 671
 672         ADVANCE_LP_RING();
 673 }
 674
 675 static void i830EmitStippleVerified(drm_device_t * dev, unsigned int *code)
 676 {
 677         drm_i830_private_t *dev_priv = dev->dev_private;
 678         RING_LOCALS;
 679
 680         BEGIN_LP_RING(2);
 681         OUT_RING(GFX_OP_STIPPLE);
 682         OUT_RING(code[1]);
 683         ADVANCE_LP_RING();
 684 }
 685
 686 static void i830EmitState(drm_device_t * dev)
 687 {
 688         drm_i830_private_t *dev_priv = dev->dev_private;
 689         drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
 690         unsigned int dirty = sarea_priv->dirty;
 691
 692         DRM_DEBUG("%s %x\n", __FUNCTION__, dirty);
 693
 694         if (dirty & I830_UPLOAD_BUFFERS) {
 695                 i830EmitDestVerified(dev, sarea_priv->BufferState);
 696                 sarea_priv->dirty &= ~I830_UPLOAD_BUFFERS;
 697         }
 698
 699         if (dirty & I830_UPLOAD_CTX) {
 700                 i830EmitContextVerified(dev, sarea_priv->ContextState);
 701                 sarea_priv->dirty &= ~I830_UPLOAD_CTX;
 702         }
 703
 704         if (dirty & I830_UPLOAD_TEX0) {
 705                 i830EmitTexVerified(dev, sarea_priv->TexState[0]);
 706                 sarea_priv->dirty &= ~I830_UPLOAD_TEX0;
 707         }
 708
 709         if (dirty & I830_UPLOAD_TEX1) {
 710                 i830EmitTexVerified(dev, sarea_priv->TexState[1]);
 711                 sarea_priv->dirty &= ~I830_UPLOAD_TEX1;
 712         }
 713
 714         if (dirty & I830_UPLOAD_TEXBLEND0) {
 715                 i830EmitTexBlendVerified(dev, sarea_priv->TexBlendState[0],
 716                                          sarea_priv->TexBlendStateWordsUsed[0]);
 717                 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND0;
 718         }
 719
 720         if (dirty & I830_UPLOAD_TEXBLEND1) {
 721                 i830EmitTexBlendVerified(dev, sarea_priv->TexBlendState[1],
 722                                          sarea_priv->TexBlendStateWordsUsed[1]);
 723                 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND1;
 724         }
 725
 726         if (dirty & I830_UPLOAD_TEX_PALETTE_SHARED) {
 727                 i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 1);
 728         } else {
 729                 if (dirty & I830_UPLOAD_TEX_PALETTE_N(0)) {
 730                         i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 0);
 731                         sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(0);
 732                 }
 733                 if (dirty & I830_UPLOAD_TEX_PALETTE_N(1)) {
 734                         i830EmitTexPalette(dev, sarea_priv->Palette[1], 1, 0);
 735                         sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(1);
 736                 }
 737
 738                 /* 1.3:
 739                  */
 740 #if 0
 741                 if (dirty & I830_UPLOAD_TEX_PALETTE_N(2)) {
 742                         i830EmitTexPalette(dev, sarea_priv->Palette2[0], 0, 0);
 743                         sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(2);
 744                 }
 745                 if (dirty & I830_UPLOAD_TEX_PALETTE_N(3)) {
 746                         i830EmitTexPalette(dev, sarea_priv->Palette2[1], 1, 0);
 747                         sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(2);
 748                 }
 749 #endif
 750         }
 751
 752         /* 1.3:
 753          */
 754         if (dirty & I830_UPLOAD_STIPPLE) {
 755                 i830EmitStippleVerified(dev, sarea_priv->StippleState);
 756                 sarea_priv->dirty &= ~I830_UPLOAD_STIPPLE;
 757         }
 758
 759         if (dirty & I830_UPLOAD_TEX2) {
 760                 i830EmitTexVerified(dev, sarea_priv->TexState2);
 761                 sarea_priv->dirty &= ~I830_UPLOAD_TEX2;
 762         }
 763
 764         if (dirty & I830_UPLOAD_TEX3) {
 765                 i830EmitTexVerified(dev, sarea_priv->TexState3);
 766                 sarea_priv->dirty &= ~I830_UPLOAD_TEX3;
 767         }
 768
 769         if (dirty & I830_UPLOAD_TEXBLEND2) {
 770                 i830EmitTexBlendVerified(dev,
 771                                          sarea_priv->TexBlendState2,
 772                                          sarea_priv->TexBlendStateWordsUsed2);
 773
 774                 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND2;
 775         }
 776
 777         if (dirty & I830_UPLOAD_TEXBLEND3) {
 778                 i830EmitTexBlendVerified(dev,
 779                                          sarea_priv->TexBlendState3,
 780                                          sarea_priv->TexBlendStateWordsUsed3);
 781                 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND3;
 782         }
 783 }
 784
 785 /* ================================================================
 786  * Performance monitoring functions
 787  */
 788
 789 static void i830_fill_box(drm_device_t * dev,
 790                           int x, int y, int w, int h, int r, int g, int b)
 791 {
 792         drm_i830_private_t *dev_priv = dev->dev_private;
 793         u32 color;
 794         unsigned int BR13, CMD;
 795         RING_LOCALS;
 796
 797         BR13 = (0xF0 << 16) | (dev_priv->pitch * dev_priv->cpp) | (1 << 24);
 798         CMD = XY_COLOR_BLT_CMD;
 799         x += dev_priv->sarea_priv->boxes[0].x1;
 800         y += dev_priv->sarea_priv->boxes[0].y1;
 801
 802         if (dev_priv->cpp == 4) {
 803                 BR13 |= (1 << 25);
 804                 CMD |= (XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB);
 805                 color = (((0xff) << 24) | (r << 16) | (g << 8) | b);
 806         } else {
 807                 color = (((r & 0xf8) << 8) |
 808                          ((g & 0xfc) << 3) | ((b & 0xf8) >> 3));
 809         }
 810
 811         BEGIN_LP_RING(6);
 812         OUT_RING(CMD);
 813         OUT_RING(BR13);
 814         OUT_RING((y << 16) | x);
 815         OUT_RING(((y + h) << 16) | (x + w));
 816
 817         if (dev_priv->current_page == 1) {
 818                 OUT_RING(dev_priv->front_offset);
 819         } else {
 820                 OUT_RING(dev_priv->back_offset);
 821         }
 822
 823         OUT_RING(color);
 824         ADVANCE_LP_RING();
 825 }
 826
 827 static void i830_cp_performance_boxes(drm_device_t * dev)
 828 {
 829         drm_i830_private_t *dev_priv = dev->dev_private;
 830
 831         /* Purple box for page flipping
 832          */
 833         if (dev_priv->sarea_priv->perf_boxes & I830_BOX_FLIP)
 834                 i830_fill_box(dev, 4, 4, 8, 8, 255, 0, 255);
 835
 836         /* Red box if we have to wait for idle at any point
 837          */
 838         if (dev_priv->sarea_priv->perf_boxes & I830_BOX_WAIT)
 839                 i830_fill_box(dev, 16, 4, 8, 8, 255, 0, 0);
 840
 841         /* Blue box: lost context?
 842          */
 843         if (dev_priv->sarea_priv->perf_boxes & I830_BOX_LOST_CONTEXT)
 844                 i830_fill_box(dev, 28, 4, 8, 8, 0, 0, 255);
 845
 846         /* Yellow box for texture swaps
 847          */
 848         if (dev_priv->sarea_priv->perf_boxes & I830_BOX_TEXTURE_LOAD)
 849                 i830_fill_box(dev, 40, 4, 8, 8, 255, 255, 0);
 850
 851         /* Green box if hardware never idles (as far as we can tell)
 852          */
 853         if (!(dev_priv->sarea_priv->perf_boxes & I830_BOX_RING_EMPTY))
 854                 i830_fill_box(dev, 64, 4, 8, 8, 0, 255, 0);
 855
 856         /* Draw bars indicating number of buffers allocated
 857          * (not a great measure, easily confused)
 858          */
 859         if (dev_priv->dma_used) {
 860                 int bar = dev_priv->dma_used / 10240;
 861                 if (bar > 100)
 862                         bar = 100;
 863                 if (bar < 1)
 864                         bar = 1;
 865                 i830_fill_box(dev, 4, 16, bar, 4, 196, 128, 128);
 866                 dev_priv->dma_used = 0;
 867         }
 868
 869         dev_priv->sarea_priv->perf_boxes = 0;
 870 }
 871
 872 static void i830_dma_dispatch_clear(drm_device_t * dev, int flags,
 873                                     unsigned int clear_color,
 874                                     unsigned int clear_zval,
 875                                     unsigned int clear_depthmask)
 876 {
 877         drm_i830_private_t *dev_priv = dev->dev_private;
 878         drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
 879         int nbox = sarea_priv->nbox;
 880         drm_clip_rect_t *pbox = sarea_priv->boxes;
 881         int pitch = dev_priv->pitch;
 882         int cpp = dev_priv->cpp;
 883         int i;
 884         unsigned int BR13, CMD, D_CMD;
 885         RING_LOCALS;
 886
 887         if (dev_priv->current_page == 1) {
 888                 unsigned int tmp = flags;
 889
 890                 flags &= ~(I830_FRONT | I830_BACK);
 891                 if (tmp & I830_FRONT)
 892                         flags |= I830_BACK;
 893                 if (tmp & I830_BACK)
 894                         flags |= I830_FRONT;
 895         }
 896
 897         i830_kernel_lost_context(dev);
 898
 899         switch (cpp) {
 900         case 2:
 901                 BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24);
 902                 D_CMD = CMD = XY_COLOR_BLT_CMD;
 903                 break;
 904         case 4:
 905                 BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24) | (1 << 25);
 906                 CMD = (XY_COLOR_BLT_CMD | XY_COLOR_BLT_WRITE_ALPHA |
 907                        XY_COLOR_BLT_WRITE_RGB);
 908                 D_CMD = XY_COLOR_BLT_CMD;
 909                 if (clear_depthmask & 0x00ffffff)
 910                         D_CMD |= XY_COLOR_BLT_WRITE_RGB;
 911                 if (clear_depthmask & 0xff000000)
 912                         D_CMD |= XY_COLOR_BLT_WRITE_ALPHA;
 913                 break;
 914         default:
 915                 BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24);
 916                 D_CMD = CMD = XY_COLOR_BLT_CMD;
 917                 break;
 918         }
 919
 920         if (nbox > I830_NR_SAREA_CLIPRECTS)
 921                 nbox = I830_NR_SAREA_CLIPRECTS;
 922
 923         for (i = 0; i < nbox; i++, pbox++) {
 924                 if (pbox->x1 > pbox->x2 ||
 925                     pbox->y1 > pbox->y2 ||
 926                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
 927                         continue;
 928
 929                 if (flags & I830_FRONT) {
 930                         DRM_DEBUG("clear front\n");
 931                         BEGIN_LP_RING(6);
 932                         OUT_RING(CMD);
 933                         OUT_RING(BR13);
 934                         OUT_RING((pbox->y1 << 16) | pbox->x1);
 935                         OUT_RING((pbox->y2 << 16) | pbox->x2);
 936                         OUT_RING(dev_priv->front_offset);
 937                         OUT_RING(clear_color);
 938                         ADVANCE_LP_RING();
 939                 }
 940
 941                 if (flags & I830_BACK) {
 942                         DRM_DEBUG("clear back\n");
 943                         BEGIN_LP_RING(6);
 944                         OUT_RING(CMD);
 945                         OUT_RING(BR13);
 946                         OUT_RING((pbox->y1 << 16) | pbox->x1);
 947                         OUT_RING((pbox->y2 << 16) | pbox->x2);
 948                         OUT_RING(dev_priv->back_offset);
 949                         OUT_RING(clear_color);
 950                         ADVANCE_LP_RING();
 951                 }
 952
 953                 if (flags & I830_DEPTH) {
 954                         DRM_DEBUG("clear depth\n");
 955                         BEGIN_LP_RING(6);
 956                         OUT_RING(D_CMD);
 957                         OUT_RING(BR13);
 958                         OUT_RING((pbox->y1 << 16) | pbox->x1);
 959                         OUT_RING((pbox->y2 << 16) | pbox->x2);
 960                         OUT_RING(dev_priv->depth_offset);
 961                         OUT_RING(clear_zval);
 962                         ADVANCE_LP_RING();
 963                 }
 964         }
 965 }
 966
 967 static void i830_dma_dispatch_swap(drm_device_t * dev)
 968 {
 969         drm_i830_private_t *dev_priv = dev->dev_private;
 970         drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
 971         int nbox = sarea_priv->nbox;
 972         drm_clip_rect_t *pbox = sarea_priv->boxes;
 973         int pitch = dev_priv->pitch;
 974         int cpp = dev_priv->cpp;
 975         int i;
 976         unsigned int CMD, BR13;
 977         RING_LOCALS;
 978
 979         DRM_DEBUG("swapbuffers\n");
 980
 981         i830_kernel_lost_context(dev);
 982
 983         if (dev_priv->do_boxes)
 984                 i830_cp_performance_boxes(dev);
 985
 986         switch (cpp) {
 987         case 2:
 988                 BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24);
 989                 CMD = XY_SRC_COPY_BLT_CMD;
 990                 break;
 991         case 4:
 992                 BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24) | (1 << 25);
 993                 CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
 994                        XY_SRC_COPY_BLT_WRITE_RGB);
 995                 break;
 996         default:
 997                 BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24);
 998                 CMD = XY_SRC_COPY_BLT_CMD;
 999                 break;
1000         }
1001
1002         if (nbox > I830_NR_SAREA_CLIPRECTS)
1003                 nbox = I830_NR_SAREA_CLIPRECTS;
1004
1005         for (i = 0; i < nbox; i++, pbox++) {
1006                 if (pbox->x1 > pbox->x2 ||
1007                     pbox->y1 > pbox->y2 ||
1008                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
1009                         continue;
1010
1011                 DRM_DEBUG("dispatch swap %d,%d-%d,%d!\n",
1012                           pbox->x1, pbox->y1, pbox->x2, pbox->y2);
1013
1014                 BEGIN_LP_RING(8);
1015                 OUT_RING(CMD);
1016                 OUT_RING(BR13);
1017                 OUT_RING((pbox->y1 << 16) | pbox->x1);
1018                 OUT_RING((pbox->y2 << 16) | pbox->x2);
1019
1020                 if (dev_priv->current_page == 0)
1021                         OUT_RING(dev_priv->front_offset);
1022                 else
1023                         OUT_RING(dev_priv->back_offset);
1024
1025                 OUT_RING((pbox->y1 << 16) | pbox->x1);
1026                 OUT_RING(BR13 & 0xffff);
1027
1028                 if (dev_priv->current_page == 0)
1029                         OUT_RING(dev_priv->back_offset);
1030                 else
1031                         OUT_RING(dev_priv->front_offset);
1032
1033                 ADVANCE_LP_RING();
1034         }
1035 }
1036
1037 static void i830_dma_dispatch_flip(drm_device_t * dev)
1038 {
1039         drm_i830_private_t *dev_priv = dev->dev_private;
1040         RING_LOCALS;
1041
1042         DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n",
1043                   __FUNCTION__,
1044                   dev_priv->current_page,
1045                   dev_priv->sarea_priv->pf_current_page);
1046
1047         i830_kernel_lost_context(dev);
1048
1049         if (dev_priv->do_boxes) {
1050                 dev_priv->sarea_priv->perf_boxes |= I830_BOX_FLIP;
1051                 i830_cp_performance_boxes(dev);
1052         }
1053
1054         BEGIN_LP_RING(2);
1055         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
1056         OUT_RING(0);
1057         ADVANCE_LP_RING();
1058
1059         BEGIN_LP_RING(6);
1060         OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
1061         OUT_RING(0);
1062         if (dev_priv->current_page == 0) {
1063                 OUT_RING(dev_priv->back_offset);
1064                 dev_priv->current_page = 1;
1065         } else {
1066                 OUT_RING(dev_priv->front_offset);
1067                 dev_priv->current_page = 0;
1068         }
1069         OUT_RING(0);
1070         ADVANCE_LP_RING();
1071
1072         BEGIN_LP_RING(2);
1073         OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
1074         OUT_RING(0);
1075         ADVANCE_LP_RING();
1076
1077         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1078 }
1079
1080 static void i830_dma_dispatch_vertex(drm_device_t * dev,
1081                                      drm_buf_t * buf, int discard, int used)
1082 {
1083         drm_i830_private_t *dev_priv = dev->dev_private;
1084         drm_i830_buf_priv_t *buf_priv = buf->dev_private;
1085         drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
1086         drm_clip_rect_t *box = sarea_priv->boxes;
1087         int nbox = sarea_priv->nbox;
1088         unsigned long address = (unsigned long)buf->bus_address;
1089         unsigned long start = address - dev->agp->base;
1090         int i = 0, u;
1091         RING_LOCALS;
1092
1093         i830_kernel_lost_context(dev);
1094
1095         if (nbox > I830_NR_SAREA_CLIPRECTS)
1096                 nbox = I830_NR_SAREA_CLIPRECTS;
1097
1098         if (discard) {
1099                 u = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
1100                             I830_BUF_HARDWARE);
1101                 if (u != I830_BUF_CLIENT) {
1102                         DRM_DEBUG("xxxx 2\n");
1103                 }
1104         }
1105
1106         if (used > 4 * 1023)
1107                 used = 0;
1108
1109         if (sarea_priv->dirty)
1110                 i830EmitState(dev);
1111
1112         DRM_DEBUG("dispatch vertex addr 0x%lx, used 0x%x nbox %d\n",
1113                   address, used, nbox);
1114
1115         dev_priv->counter++;
1116         DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1117         DRM_DEBUG("i830_dma_dispatch\n");
1118         DRM_DEBUG("start : %lx\n", start);
1119         DRM_DEBUG("used : %d\n", used);
1120         DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1121
1122         if (buf_priv->currently_mapped == I830_BUF_MAPPED) {
1123                 u32 *vp = buf_priv->kernel_virtual;
1124
1125                 vp[0] = (GFX_OP_PRIMITIVE |
1126                          sarea_priv->vertex_prim | ((used / 4) - 2));
1127
1128                 if (dev_priv->use_mi_batchbuffer_start) {
1129                         vp[used / 4] = MI_BATCH_BUFFER_END;
1130                         used += 4;
1131                 }
1132
1133                 if (used & 4) {
1134                         vp[used / 4] = 0;
1135                         used += 4;
1136                 }
1137
1138                 i830_unmap_buffer(buf);
1139         }
1140
1141         if (used) {
1142                 do {
1143                         if (i < nbox) {
1144                                 BEGIN_LP_RING(6);
1145                                 OUT_RING(GFX_OP_DRAWRECT_INFO);
1146                                 OUT_RING(sarea_priv->
1147                                          BufferState[I830_DESTREG_DR1]);
1148                                 OUT_RING(box[i].x1 | (box[i].y1 << 16));
1149                                 OUT_RING(box[i].x2 | (box[i].y2 << 16));
1150                                 OUT_RING(sarea_priv->
1151                                          BufferState[I830_DESTREG_DR4]);
1152                                 OUT_RING(0);
1153                                 ADVANCE_LP_RING();
1154                         }
1155
1156                         if (dev_priv->use_mi_batchbuffer_start) {
1157                                 BEGIN_LP_RING(2);
1158                                 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
1159                                 OUT_RING(start | MI_BATCH_NON_SECURE);
1160                                 ADVANCE_LP_RING();
1161                         } else {
1162                                 BEGIN_LP_RING(4);
1163                                 OUT_RING(MI_BATCH_BUFFER);
1164                                 OUT_RING(start | MI_BATCH_NON_SECURE);
1165                                 OUT_RING(start + used - 4);
1166                                 OUT_RING(0);
1167                                 ADVANCE_LP_RING();
1168                         }
1169
1170                 } while (++i < nbox);
1171         }
1172
1173         if (discard) {
1174                 dev_priv->counter++;
1175
1176                 (void)cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
1177                               I830_BUF_HARDWARE);
1178
1179                 BEGIN_LP_RING(8);
1180                 OUT_RING(CMD_STORE_DWORD_IDX);
1181                 OUT_RING(20);
1182                 OUT_RING(dev_priv->counter);
1183                 OUT_RING(CMD_STORE_DWORD_IDX);
1184                 OUT_RING(buf_priv->my_use_idx);
1185                 OUT_RING(I830_BUF_FREE);
1186                 OUT_RING(CMD_REPORT_HEAD);
1187                 OUT_RING(0);
1188                 ADVANCE_LP_RING();
1189         }
1190 }
1191
1192 static void i830_dma_quiescent(drm_device_t * dev)
1193 {
1194         drm_i830_private_t *dev_priv = dev->dev_private;
1195         RING_LOCALS;
1196
1197         i830_kernel_lost_context(dev);
1198
1199         BEGIN_LP_RING(4);
1200         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
1201         OUT_RING(CMD_REPORT_HEAD);
1202         OUT_RING(0);
1203         OUT_RING(0);
1204         ADVANCE_LP_RING();
1205
1206         i830_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__);
1207 }
1208
1209 static int i830_flush_queue(drm_device_t * dev)
1210 {
1211         drm_i830_private_t *dev_priv = dev->dev_private;
1212         drm_device_dma_t *dma = dev->dma;
1213         int i, ret = 0;
1214         RING_LOCALS;
1215
1216         i830_kernel_lost_context(dev);
1217
1218         BEGIN_LP_RING(2);
1219         OUT_RING(CMD_REPORT_HEAD);
1220         OUT_RING(0);
1221         ADVANCE_LP_RING();
1222
1223         i830_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__);
1224
1225         for (i = 0; i < dma->buf_count; i++) {
1226                 drm_buf_t *buf = dma->buflist[i];
1227                 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
1228
1229                 int used = cmpxchg(buf_priv->in_use, I830_BUF_HARDWARE,
1230                                    I830_BUF_FREE);
1231
1232                 if (used == I830_BUF_HARDWARE)
1233                         DRM_DEBUG("reclaimed from HARDWARE\n");
1234                 if (used == I830_BUF_CLIENT)
1235                         DRM_DEBUG("still on client\n");
1236         }
1237
1238         return ret;
1239 }
1240
1241 /* Must be called with the lock held */
1242 static void i830_reclaim_buffers(drm_device_t * dev, struct file *filp)
1243 {
1244         drm_device_dma_t *dma = dev->dma;
1245         int i;
1246
1247         if (!dma)
1248                 return;
1249         if (!dev->dev_private)
1250                 return;
1251         if (!dma->buflist)
1252                 return;
1253
1254         i830_flush_queue(dev);
1255
1256         for (i = 0; i < dma->buf_count; i++) {
1257                 drm_buf_t *buf = dma->buflist[i];
1258                 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
1259
1260                 if (buf->filp == filp && buf_priv) {
1261                         int used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
1262                                            I830_BUF_FREE);
1263
1264                         if (used == I830_BUF_CLIENT)
1265                                 DRM_DEBUG("reclaimed from client\n");
1266                         if (buf_priv->currently_mapped == I830_BUF_MAPPED)
1267                                 buf_priv->currently_mapped = I830_BUF_UNMAPPED;
1268                 }
1269         }
1270 }
1271
1272 static int i830_flush_ioctl(struct inode *inode, struct file *filp,
1273                             unsigned int cmd, unsigned long arg)
1274 {
1275         drm_file_t *priv = filp->private_data;
1276         drm_device_t *dev = priv->head->dev;
1277
1278         LOCK_TEST_WITH_RETURN(dev, filp);
1279
1280         i830_flush_queue(dev);
1281         return 0;
1282 }
1283
1284 static int i830_dma_vertex(struct inode *inode, struct file *filp,
1285                            unsigned int cmd, unsigned long arg)
1286 {
1287         drm_file_t *priv = filp->private_data;
1288         drm_device_t *dev = priv->head->dev;
1289         drm_device_dma_t *dma = dev->dma;
1290         drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
1291         u32 *hw_status = dev_priv->hw_status_page;
1292         drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
1293             dev_priv->sarea_priv;
1294         drm_i830_vertex_t vertex;
1295
1296         if (copy_from_user
1297             (&vertex, (drm_i830_vertex_t __user *) arg, sizeof(vertex)))
1298                 return -EFAULT;
1299
1300         LOCK_TEST_WITH_RETURN(dev, filp);
1301
1302         DRM_DEBUG("i830 dma vertex, idx %d used %d discard %d\n",
1303                   vertex.idx, vertex.used, vertex.discard);
1304
1305         if (vertex.idx < 0 || vertex.idx > dma->buf_count)
1306                 return -EINVAL;
1307
1308         i830_dma_dispatch_vertex(dev,
1309                                  dma->buflist[vertex.idx],
1310                                  vertex.discard, vertex.used);
1311
1312         sarea_priv->last_enqueue = dev_priv->counter - 1;
1313         sarea_priv->last_dispatch = (int)hw_status[5];
1314
1315         return 0;
1316 }
1317
1318 static int i830_clear_bufs(struct inode *inode, struct file *filp,
1319                            unsigned int cmd, unsigned long arg)
1320 {
1321         drm_file_t *priv = filp->private_data;
1322         drm_device_t *dev = priv->head->dev;
1323         drm_i830_clear_t clear;
1324
1325         if (copy_from_user
1326             (&clear, (drm_i830_clear_t __user *) arg, sizeof(clear)))
1327                 return -EFAULT;
1328
1329         LOCK_TEST_WITH_RETURN(dev, filp);
1330
1331         /* GH: Someone's doing nasty things... */
1332         if (!dev->dev_private) {
1333                 return -EINVAL;
1334         }
1335
1336         i830_dma_dispatch_clear(dev, clear.flags,
1337                                 clear.clear_color,
1338                                 clear.clear_depth, clear.clear_depthmask);
1339         return 0;
1340 }
1341
1342 static int i830_swap_bufs(struct inode *inode, struct file *filp,
1343                           unsigned int cmd, unsigned long arg)
1344 {
1345         drm_file_t *priv = filp->private_data;
1346         drm_device_t *dev = priv->head->dev;
1347
1348         DRM_DEBUG("i830_swap_bufs\n");
1349
1350         LOCK_TEST_WITH_RETURN(dev, filp);
1351
1352         i830_dma_dispatch_swap(dev);
1353         return 0;
1354 }
1355
1356 /* Not sure why this isn't set all the time:
1357  */
1358 static void i830_do_init_pageflip(drm_device_t * dev)
1359 {
1360         drm_i830_private_t *dev_priv = dev->dev_private;
1361
1362         DRM_DEBUG("%s\n", __FUNCTION__);
1363         dev_priv->page_flipping = 1;
1364         dev_priv->current_page = 0;
1365         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1366 }
1367
1368 static int i830_do_cleanup_pageflip(drm_device_t * dev)
1369 {
1370         drm_i830_private_t *dev_priv = dev->dev_private;
1371
1372         DRM_DEBUG("%s\n", __FUNCTION__);
1373         if (dev_priv->current_page != 0)
1374                 i830_dma_dispatch_flip(dev);
1375
1376         dev_priv->page_flipping = 0;
1377         return 0;
1378 }
1379
1380 static int i830_flip_bufs(struct inode *inode, struct file *filp,
1381                           unsigned int cmd, unsigned long arg)
1382 {
1383         drm_file_t *priv = filp->private_data;
1384         drm_device_t *dev = priv->head->dev;
1385         drm_i830_private_t *dev_priv = dev->dev_private;
1386
1387         DRM_DEBUG("%s\n", __FUNCTION__);
1388
1389         LOCK_TEST_WITH_RETURN(dev, filp);
1390
1391         if (!dev_priv->page_flipping)
1392                 i830_do_init_pageflip(dev);
1393
1394         i830_dma_dispatch_flip(dev);
1395         return 0;
1396 }
1397
1398 static int i830_getage(struct inode *inode, struct file *filp, unsigned int cmd,
1399                        unsigned long arg)
1400 {
1401         drm_file_t *priv = filp->private_data;
1402         drm_device_t *dev = priv->head->dev;
1403         drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
1404         u32 *hw_status = dev_priv->hw_status_page;
1405         drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
1406             dev_priv->sarea_priv;
1407
1408         sarea_priv->last_dispatch = (int)hw_status[5];
1409         return 0;
1410 }
1411
1412 static int i830_getbuf(struct inode *inode, struct file *filp, unsigned int cmd,
1413                        unsigned long arg)
1414 {
1415         drm_file_t *priv = filp->private_data;
1416         drm_device_t *dev = priv->head->dev;
1417         int retcode = 0;
1418         drm_i830_dma_t d;
1419         drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
1420         u32 *hw_status = dev_priv->hw_status_page;
1421         drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
1422             dev_priv->sarea_priv;
1423
1424         DRM_DEBUG("getbuf\n");
1425         if (copy_from_user(&d, (drm_i830_dma_t __user *) arg, sizeof(d)))
1426                 return -EFAULT;
1427
1428         LOCK_TEST_WITH_RETURN(dev, filp);
1429
1430         d.granted = 0;
1431
1432         retcode = i830_dma_get_buffer(dev, &d, filp);
1433
1434         DRM_DEBUG("i830_dma: %d returning %d, granted = %d\n",
1435                   current->pid, retcode, d.granted);
1436
1437         if (copy_to_user((drm_dma_t __user *) arg, &d, sizeof(d)))
1438                 return -EFAULT;
1439         sarea_priv->last_dispatch = (int)hw_status[5];
1440
1441         return retcode;
1442 }
1443
1444 static int i830_copybuf(struct inode *inode,
1445                         struct file *filp, unsigned int cmd, unsigned long arg)
1446 {
1447         /* Never copy - 2.4.x doesn't need it */
1448         return 0;
1449 }
1450
1451 static int i830_docopy(struct inode *inode, struct file *filp, unsigned int cmd,
1452                        unsigned long arg)
1453 {
1454         return 0;
1455 }
1456
1457 static int i830_getparam(struct inode *inode, struct file *filp,
1458                          unsigned int cmd, unsigned long arg)
1459 {
1460         drm_file_t *priv = filp->private_data;
1461         drm_device_t *dev = priv->head->dev;
1462         drm_i830_private_t *dev_priv = dev->dev_private;
1463         drm_i830_getparam_t param;
1464         int value;
1465
1466         if (!dev_priv) {
1467                 DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
1468                 return -EINVAL;
1469         }
1470
1471         if (copy_from_user
1472             (&param, (drm_i830_getparam_t __user *) arg, sizeof(param)))
1473                 return -EFAULT;
1474
1475         switch (param.param) {
1476         case I830_PARAM_IRQ_ACTIVE:
1477                 value = dev->irq_enabled;
1478                 break;
1479         default:
1480                 return -EINVAL;
1481         }
1482
1483         if (copy_to_user(param.value, &value, sizeof(int))) {
1484                 DRM_ERROR("copy_to_user\n");
1485                 return -EFAULT;
1486         }
1487
1488         return 0;
1489 }
1490
1491 static int i830_setparam(struct inode *inode, struct file *filp,
1492                          unsigned int cmd, unsigned long arg)
1493 {
1494         drm_file_t *priv = filp->private_data;
1495         drm_device_t *dev = priv->head->dev;
1496         drm_i830_private_t *dev_priv = dev->dev_private;
1497         drm_i830_setparam_t param;
1498
1499         if (!dev_priv) {
1500                 DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
1501                 return -EINVAL;
1502         }
1503
1504         if (copy_from_user
1505             (&param, (drm_i830_setparam_t __user *) arg, sizeof(param)))
1506                 return -EFAULT;
1507
1508         switch (param.param) {
1509         case I830_SETPARAM_USE_MI_BATCHBUFFER_START:
1510                 dev_priv->use_mi_batchbuffer_start = param.value;
1511                 break;
1512         default:
1513                 return -EINVAL;
1514         }
1515
1516         return 0;
1517 }
1518
1519 int i830_driver_load(drm_device_t *dev, unsigned long flags)
1520 {
1521         /* i830 has 4 more counters */
1522         dev->counters += 4;
1523         dev->types[6] = _DRM_STAT_IRQ;
1524         dev->types[7] = _DRM_STAT_PRIMARY;
1525         dev->types[8] = _DRM_STAT_SECONDARY;
1526         dev->types[9] = _DRM_STAT_DMA;
1527
1528         return 0;
1529 }
1530
1531 void i830_driver_lastclose(drm_device_t * dev)
1532 {
1533         i830_dma_cleanup(dev);
1534 }
1535
1536 void i830_driver_preclose(drm_device_t * dev, DRMFILE filp)
1537 {
1538         if (dev->dev_private) {
1539                 drm_i830_private_t *dev_priv = dev->dev_private;
1540                 if (dev_priv->page_flipping) {
1541                         i830_do_cleanup_pageflip(dev);
1542                 }
1543         }
1544 }
1545
1546 void i830_driver_reclaim_buffers_locked(drm_device_t * dev, struct file *filp)
1547 {
1548         i830_reclaim_buffers(dev, filp);
1549 }
1550
1551 int i830_driver_dma_quiescent(drm_device_t * dev)
1552 {
1553         i830_dma_quiescent(dev);
1554         return 0;
1555 }
1556
1557 drm_ioctl_desc_t i830_ioctls[] = {
1558         [DRM_IOCTL_NR(DRM_I830_INIT)] = {i830_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
1559         [DRM_IOCTL_NR(DRM_I830_VERTEX)] = {i830_dma_vertex, DRM_AUTH},
1560         [DRM_IOCTL_NR(DRM_I830_CLEAR)] = {i830_clear_bufs, DRM_AUTH},
1561         [DRM_IOCTL_NR(DRM_I830_FLUSH)] = {i830_flush_ioctl, DRM_AUTH},
1562         [DRM_IOCTL_NR(DRM_I830_GETAGE)] = {i830_getage, DRM_AUTH},
1563         [DRM_IOCTL_NR(DRM_I830_GETBUF)] = {i830_getbuf, DRM_AUTH},
1564         [DRM_IOCTL_NR(DRM_I830_SWAP)] = {i830_swap_bufs, DRM_AUTH},
1565         [DRM_IOCTL_NR(DRM_I830_COPY)] = {i830_copybuf, DRM_AUTH},
1566         [DRM_IOCTL_NR(DRM_I830_DOCOPY)] = {i830_docopy, DRM_AUTH},
1567         [DRM_IOCTL_NR(DRM_I830_FLIP)] = {i830_flip_bufs, DRM_AUTH},
1568         [DRM_IOCTL_NR(DRM_I830_IRQ_EMIT)] = {i830_irq_emit, DRM_AUTH},
1569         [DRM_IOCTL_NR(DRM_I830_IRQ_WAIT)] = {i830_irq_wait, DRM_AUTH},
1570         [DRM_IOCTL_NR(DRM_I830_GETPARAM)] = {i830_getparam, DRM_AUTH},
1571         [DRM_IOCTL_NR(DRM_I830_SETPARAM)] = {i830_setparam, DRM_AUTH}
1572 };
1573
1574 int i830_max_ioctl = DRM_ARRAY_SIZE(i830_ioctls);
1575
1576 /**
1577  * Determine if the device really is AGP or not.
1578  *
1579  * All Intel graphics chipsets are treated as AGP, even if they are really
1580  * PCI-e.
1581  *
1582  * \param dev   The device to be tested.
1583  *
1584  * \returns
1585  * A value of 1 is always retured to indictate every i8xx is AGP.
1586  */
1587 int i830_driver_device_is_agp(drm_device_t * dev)
1588 {
1589         return 1;
1590 }