Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* i915_dma.c -- DMA support for the I915 -*- linux-c -*- |
| 2 | */ |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 3 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. |
| 5 | * All Rights Reserved. |
Dave Airlie | bc54fd1 | 2005-06-23 22:46:46 +1000 | [diff] [blame] | 6 | * |
| 7 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 8 | * copy of this software and associated documentation files (the |
| 9 | * "Software"), to deal in the Software without restriction, including |
| 10 | * without limitation the rights to use, copy, modify, merge, publish, |
| 11 | * distribute, sub license, and/or sell copies of the Software, and to |
| 12 | * permit persons to whom the Software is furnished to do so, subject to |
| 13 | * the following conditions: |
| 14 | * |
| 15 | * The above copyright notice and this permission notice (including the |
| 16 | * next paragraph) shall be included in all copies or substantial portions |
| 17 | * of the Software. |
| 18 | * |
| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
| 22 | * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR |
| 23 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 24 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 25 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 26 | * |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 27 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
| 29 | #include "drmP.h" |
| 30 | #include "drm.h" |
| 31 | #include "i915_drm.h" |
| 32 | #include "i915_drv.h" |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | /* Really want an OS-independent resettable timer. Would like to have |
| 35 | * this loop run for (eg) 3 sec, but have the timer reset every time |
| 36 | * the head pointer changes, so that EBUSY only happens if the ring |
| 37 | * actually stalls for (eg) 3 seconds. |
| 38 | */ |
| 39 | int i915_wait_ring(drm_device_t * dev, int n, const char *caller) |
| 40 | { |
| 41 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 42 | drm_i915_ring_buffer_t *ring = &(dev_priv->ring); |
| 43 | u32 last_head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR; |
| 44 | int i; |
| 45 | |
| 46 | for (i = 0; i < 10000; i++) { |
| 47 | ring->head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR; |
| 48 | ring->space = ring->head - (ring->tail + 8); |
| 49 | if (ring->space < 0) |
| 50 | ring->space += ring->Size; |
| 51 | if (ring->space >= n) |
| 52 | return 0; |
| 53 | |
| 54 | dev_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; |
| 55 | |
| 56 | if (ring->head != last_head) |
| 57 | i = 0; |
| 58 | |
| 59 | last_head = ring->head; |
| 60 | } |
| 61 | |
| 62 | return DRM_ERR(EBUSY); |
| 63 | } |
| 64 | |
| 65 | void i915_kernel_lost_context(drm_device_t * dev) |
| 66 | { |
| 67 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 68 | drm_i915_ring_buffer_t *ring = &(dev_priv->ring); |
| 69 | |
| 70 | ring->head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR; |
| 71 | ring->tail = I915_READ(LP_RING + RING_TAIL) & TAIL_ADDR; |
| 72 | ring->space = ring->head - (ring->tail + 8); |
| 73 | if (ring->space < 0) |
| 74 | ring->space += ring->Size; |
| 75 | |
| 76 | if (ring->head == ring->tail) |
| 77 | dev_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY; |
| 78 | } |
| 79 | |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 80 | static int i915_dma_cleanup(drm_device_t * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | { |
| 82 | /* Make sure interrupts are disabled here because the uninstall ioctl |
| 83 | * may not have been called from userspace and after dev_private |
| 84 | * is freed, it's too late. |
| 85 | */ |
| 86 | if (dev->irq) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 87 | drm_irq_uninstall(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
| 89 | if (dev->dev_private) { |
| 90 | drm_i915_private_t *dev_priv = |
| 91 | (drm_i915_private_t *) dev->dev_private; |
| 92 | |
| 93 | if (dev_priv->ring.virtual_start) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 94 | drm_core_ioremapfree(&dev_priv->ring.map, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | } |
| 96 | |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 97 | if (dev_priv->status_page_dmah) { |
| 98 | drm_pci_free(dev, dev_priv->status_page_dmah); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | /* Need to rewrite hardware status page */ |
| 100 | I915_WRITE(0x02080, 0x1ffff000); |
| 101 | } |
| 102 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 103 | drm_free(dev->dev_private, sizeof(drm_i915_private_t), |
| 104 | DRM_MEM_DRIVER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
| 106 | dev->dev_private = NULL; |
| 107 | } |
| 108 | |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | static int i915_initialize(drm_device_t * dev, |
| 113 | drm_i915_private_t * dev_priv, |
| 114 | drm_i915_init_t * init) |
| 115 | { |
| 116 | memset(dev_priv, 0, sizeof(drm_i915_private_t)); |
| 117 | |
| 118 | DRM_GETSAREA(); |
| 119 | if (!dev_priv->sarea) { |
| 120 | DRM_ERROR("can not find sarea!\n"); |
| 121 | dev->dev_private = (void *)dev_priv; |
| 122 | i915_dma_cleanup(dev); |
| 123 | return DRM_ERR(EINVAL); |
| 124 | } |
| 125 | |
| 126 | dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset); |
| 127 | if (!dev_priv->mmio_map) { |
| 128 | dev->dev_private = (void *)dev_priv; |
| 129 | i915_dma_cleanup(dev); |
| 130 | DRM_ERROR("can not find mmio map!\n"); |
| 131 | return DRM_ERR(EINVAL); |
| 132 | } |
| 133 | |
| 134 | dev_priv->sarea_priv = (drm_i915_sarea_t *) |
| 135 | ((u8 *) dev_priv->sarea->handle + init->sarea_priv_offset); |
| 136 | |
| 137 | dev_priv->ring.Start = init->ring_start; |
| 138 | dev_priv->ring.End = init->ring_end; |
| 139 | dev_priv->ring.Size = init->ring_size; |
| 140 | dev_priv->ring.tail_mask = dev_priv->ring.Size - 1; |
| 141 | |
| 142 | dev_priv->ring.map.offset = init->ring_start; |
| 143 | dev_priv->ring.map.size = init->ring_size; |
| 144 | dev_priv->ring.map.type = 0; |
| 145 | dev_priv->ring.map.flags = 0; |
| 146 | dev_priv->ring.map.mtrr = 0; |
| 147 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 148 | drm_core_ioremap(&dev_priv->ring.map, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
| 150 | if (dev_priv->ring.map.handle == NULL) { |
| 151 | dev->dev_private = (void *)dev_priv; |
| 152 | i915_dma_cleanup(dev); |
| 153 | DRM_ERROR("can not ioremap virtual address for" |
| 154 | " ring buffer\n"); |
| 155 | return DRM_ERR(ENOMEM); |
| 156 | } |
| 157 | |
| 158 | dev_priv->ring.virtual_start = dev_priv->ring.map.handle; |
| 159 | |
| 160 | dev_priv->back_offset = init->back_offset; |
| 161 | dev_priv->front_offset = init->front_offset; |
| 162 | dev_priv->current_page = 0; |
| 163 | dev_priv->sarea_priv->pf_current_page = dev_priv->current_page; |
| 164 | |
| 165 | /* We are using separate values as placeholders for mechanisms for |
| 166 | * private backbuffer/depthbuffer usage. |
| 167 | */ |
| 168 | dev_priv->use_mi_batchbuffer_start = 0; |
| 169 | |
| 170 | /* Allow hardware batchbuffers unless told otherwise. |
| 171 | */ |
| 172 | dev_priv->allow_batchbuffer = 1; |
| 173 | |
| 174 | /* Program Hardware Status Page */ |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 175 | dev_priv->status_page_dmah = drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, |
| 176 | 0xffffffff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 178 | if (!dev_priv->status_page_dmah) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | dev->dev_private = (void *)dev_priv; |
| 180 | i915_dma_cleanup(dev); |
| 181 | DRM_ERROR("Can not allocate hardware status page\n"); |
| 182 | return DRM_ERR(ENOMEM); |
| 183 | } |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 184 | dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr; |
| 185 | dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr; |
| 186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | memset(dev_priv->hw_status_page, 0, PAGE_SIZE); |
| 188 | DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page); |
| 189 | |
| 190 | I915_WRITE(0x02080, dev_priv->dma_status_page); |
| 191 | DRM_DEBUG("Enabled hardware status page\n"); |
| 192 | |
| 193 | dev->dev_private = (void *)dev_priv; |
| 194 | |
| 195 | return 0; |
| 196 | } |
| 197 | |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 198 | static int i915_dma_resume(drm_device_t * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | { |
| 200 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 201 | |
| 202 | DRM_DEBUG("%s\n", __FUNCTION__); |
| 203 | |
| 204 | if (!dev_priv->sarea) { |
| 205 | DRM_ERROR("can not find sarea!\n"); |
| 206 | return DRM_ERR(EINVAL); |
| 207 | } |
| 208 | |
| 209 | if (!dev_priv->mmio_map) { |
| 210 | DRM_ERROR("can not find mmio map!\n"); |
| 211 | return DRM_ERR(EINVAL); |
| 212 | } |
| 213 | |
| 214 | if (dev_priv->ring.map.handle == NULL) { |
| 215 | DRM_ERROR("can not ioremap virtual address for" |
| 216 | " ring buffer\n"); |
| 217 | return DRM_ERR(ENOMEM); |
| 218 | } |
| 219 | |
| 220 | /* Program Hardware Status Page */ |
| 221 | if (!dev_priv->hw_status_page) { |
| 222 | DRM_ERROR("Can not find hardware status page\n"); |
| 223 | return DRM_ERR(EINVAL); |
| 224 | } |
| 225 | DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page); |
| 226 | |
| 227 | I915_WRITE(0x02080, dev_priv->dma_status_page); |
| 228 | DRM_DEBUG("Enabled hardware status page\n"); |
| 229 | |
| 230 | return 0; |
| 231 | } |
| 232 | |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 233 | static int i915_dma_init(DRM_IOCTL_ARGS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | { |
| 235 | DRM_DEVICE; |
| 236 | drm_i915_private_t *dev_priv; |
| 237 | drm_i915_init_t init; |
| 238 | int retcode = 0; |
| 239 | |
| 240 | DRM_COPY_FROM_USER_IOCTL(init, (drm_i915_init_t __user *) data, |
| 241 | sizeof(init)); |
| 242 | |
| 243 | switch (init.func) { |
| 244 | case I915_INIT_DMA: |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 245 | dev_priv = drm_alloc(sizeof(drm_i915_private_t), |
| 246 | DRM_MEM_DRIVER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | if (dev_priv == NULL) |
| 248 | return DRM_ERR(ENOMEM); |
| 249 | retcode = i915_initialize(dev, dev_priv, &init); |
| 250 | break; |
| 251 | case I915_CLEANUP_DMA: |
| 252 | retcode = i915_dma_cleanup(dev); |
| 253 | break; |
| 254 | case I915_RESUME_DMA: |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 255 | retcode = i915_dma_resume(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | break; |
| 257 | default: |
| 258 | retcode = -EINVAL; |
| 259 | break; |
| 260 | } |
| 261 | |
| 262 | return retcode; |
| 263 | } |
| 264 | |
| 265 | /* Implement basically the same security restrictions as hardware does |
| 266 | * for MI_BATCH_NON_SECURE. These can be made stricter at any time. |
| 267 | * |
| 268 | * Most of the calculations below involve calculating the size of a |
| 269 | * particular instruction. It's important to get the size right as |
| 270 | * that tells us where the next instruction to check is. Any illegal |
| 271 | * instruction detected will be given a size of zero, which is a |
| 272 | * signal to abort the rest of the buffer. |
| 273 | */ |
| 274 | static int do_validate_cmd(int cmd) |
| 275 | { |
| 276 | switch (((cmd >> 29) & 0x7)) { |
| 277 | case 0x0: |
| 278 | switch ((cmd >> 23) & 0x3f) { |
| 279 | case 0x0: |
| 280 | return 1; /* MI_NOOP */ |
| 281 | case 0x4: |
| 282 | return 1; /* MI_FLUSH */ |
| 283 | default: |
| 284 | return 0; /* disallow everything else */ |
| 285 | } |
| 286 | break; |
| 287 | case 0x1: |
| 288 | return 0; /* reserved */ |
| 289 | case 0x2: |
| 290 | return (cmd & 0xff) + 2; /* 2d commands */ |
| 291 | case 0x3: |
| 292 | if (((cmd >> 24) & 0x1f) <= 0x18) |
| 293 | return 1; |
| 294 | |
| 295 | switch ((cmd >> 24) & 0x1f) { |
| 296 | case 0x1c: |
| 297 | return 1; |
| 298 | case 0x1d: |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 299 | switch ((cmd >> 16) & 0xff) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | case 0x3: |
| 301 | return (cmd & 0x1f) + 2; |
| 302 | case 0x4: |
| 303 | return (cmd & 0xf) + 2; |
| 304 | default: |
| 305 | return (cmd & 0xffff) + 2; |
| 306 | } |
| 307 | case 0x1e: |
| 308 | if (cmd & (1 << 23)) |
| 309 | return (cmd & 0xffff) + 1; |
| 310 | else |
| 311 | return 1; |
| 312 | case 0x1f: |
| 313 | if ((cmd & (1 << 23)) == 0) /* inline vertices */ |
| 314 | return (cmd & 0x1ffff) + 2; |
| 315 | else if (cmd & (1 << 17)) /* indirect random */ |
| 316 | if ((cmd & 0xffff) == 0) |
| 317 | return 0; /* unknown length, too hard */ |
| 318 | else |
| 319 | return (((cmd & 0xffff) + 1) / 2) + 1; |
| 320 | else |
| 321 | return 2; /* indirect sequential */ |
| 322 | default: |
| 323 | return 0; |
| 324 | } |
| 325 | default: |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | static int validate_cmd(int cmd) |
| 333 | { |
| 334 | int ret = do_validate_cmd(cmd); |
| 335 | |
| 336 | /* printk("validate_cmd( %x ): %d\n", cmd, ret); */ |
| 337 | |
| 338 | return ret; |
| 339 | } |
| 340 | |
| 341 | static int i915_emit_cmds(drm_device_t * dev, int __user * buffer, int dwords) |
| 342 | { |
| 343 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 344 | int i; |
| 345 | RING_LOCALS; |
| 346 | |
Dave Airlie | de227f5 | 2006-01-25 15:31:43 +1100 | [diff] [blame] | 347 | if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8) |
| 348 | return DRM_ERR(EINVAL); |
| 349 | |
| 350 | BEGIN_LP_RING(((dwords+1)&~1)); |
| 351 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | for (i = 0; i < dwords;) { |
| 353 | int cmd, sz; |
| 354 | |
| 355 | if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i], sizeof(cmd))) |
| 356 | return DRM_ERR(EINVAL); |
| 357 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords) |
| 359 | return DRM_ERR(EINVAL); |
| 360 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | OUT_RING(cmd); |
| 362 | |
| 363 | while (++i, --sz) { |
| 364 | if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i], |
| 365 | sizeof(cmd))) { |
| 366 | return DRM_ERR(EINVAL); |
| 367 | } |
| 368 | OUT_RING(cmd); |
| 369 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | } |
| 371 | |
Dave Airlie | de227f5 | 2006-01-25 15:31:43 +1100 | [diff] [blame] | 372 | if (dwords & 1) |
| 373 | OUT_RING(0); |
| 374 | |
| 375 | ADVANCE_LP_RING(); |
| 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | return 0; |
| 378 | } |
| 379 | |
| 380 | static int i915_emit_box(drm_device_t * dev, |
| 381 | drm_clip_rect_t __user * boxes, |
| 382 | int i, int DR1, int DR4) |
| 383 | { |
| 384 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 385 | drm_clip_rect_t box; |
| 386 | RING_LOCALS; |
| 387 | |
| 388 | if (DRM_COPY_FROM_USER_UNCHECKED(&box, &boxes[i], sizeof(box))) { |
| 389 | return EFAULT; |
| 390 | } |
| 391 | |
| 392 | if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) { |
| 393 | DRM_ERROR("Bad box %d,%d..%d,%d\n", |
| 394 | box.x1, box.y1, box.x2, box.y2); |
| 395 | return DRM_ERR(EINVAL); |
| 396 | } |
| 397 | |
| 398 | BEGIN_LP_RING(6); |
| 399 | OUT_RING(GFX_OP_DRAWRECT_INFO); |
| 400 | OUT_RING(DR1); |
| 401 | OUT_RING((box.x1 & 0xffff) | (box.y1 << 16)); |
| 402 | OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16)); |
| 403 | OUT_RING(DR4); |
| 404 | OUT_RING(0); |
| 405 | ADVANCE_LP_RING(); |
| 406 | |
| 407 | return 0; |
| 408 | } |
| 409 | |
Dave Airlie | de227f5 | 2006-01-25 15:31:43 +1100 | [diff] [blame] | 410 | static void i915_emit_breadcrumb(drm_device_t *dev) |
| 411 | { |
| 412 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 413 | RING_LOCALS; |
| 414 | |
| 415 | dev_priv->sarea_priv->last_enqueue = dev_priv->counter++; |
| 416 | |
| 417 | BEGIN_LP_RING(4); |
| 418 | OUT_RING(CMD_STORE_DWORD_IDX); |
| 419 | OUT_RING(20); |
| 420 | OUT_RING(dev_priv->counter); |
| 421 | OUT_RING(0); |
| 422 | ADVANCE_LP_RING(); |
| 423 | } |
| 424 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | static int i915_dispatch_cmdbuffer(drm_device_t * dev, |
| 426 | drm_i915_cmdbuffer_t * cmd) |
| 427 | { |
| 428 | int nbox = cmd->num_cliprects; |
| 429 | int i = 0, count, ret; |
| 430 | |
| 431 | if (cmd->sz & 0x3) { |
| 432 | DRM_ERROR("alignment"); |
| 433 | return DRM_ERR(EINVAL); |
| 434 | } |
| 435 | |
| 436 | i915_kernel_lost_context(dev); |
| 437 | |
| 438 | count = nbox ? nbox : 1; |
| 439 | |
| 440 | for (i = 0; i < count; i++) { |
| 441 | if (i < nbox) { |
| 442 | ret = i915_emit_box(dev, cmd->cliprects, i, |
| 443 | cmd->DR1, cmd->DR4); |
| 444 | if (ret) |
| 445 | return ret; |
| 446 | } |
| 447 | |
| 448 | ret = i915_emit_cmds(dev, (int __user *)cmd->buf, cmd->sz / 4); |
| 449 | if (ret) |
| 450 | return ret; |
| 451 | } |
| 452 | |
Dave Airlie | de227f5 | 2006-01-25 15:31:43 +1100 | [diff] [blame] | 453 | i915_emit_breadcrumb(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | return 0; |
| 455 | } |
| 456 | |
| 457 | static int i915_dispatch_batchbuffer(drm_device_t * dev, |
| 458 | drm_i915_batchbuffer_t * batch) |
| 459 | { |
| 460 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 461 | drm_clip_rect_t __user *boxes = batch->cliprects; |
| 462 | int nbox = batch->num_cliprects; |
| 463 | int i = 0, count; |
| 464 | RING_LOCALS; |
| 465 | |
| 466 | if ((batch->start | batch->used) & 0x7) { |
| 467 | DRM_ERROR("alignment"); |
| 468 | return DRM_ERR(EINVAL); |
| 469 | } |
| 470 | |
| 471 | i915_kernel_lost_context(dev); |
| 472 | |
| 473 | count = nbox ? nbox : 1; |
| 474 | |
| 475 | for (i = 0; i < count; i++) { |
| 476 | if (i < nbox) { |
| 477 | int ret = i915_emit_box(dev, boxes, i, |
| 478 | batch->DR1, batch->DR4); |
| 479 | if (ret) |
| 480 | return ret; |
| 481 | } |
| 482 | |
| 483 | if (dev_priv->use_mi_batchbuffer_start) { |
| 484 | BEGIN_LP_RING(2); |
| 485 | OUT_RING(MI_BATCH_BUFFER_START | (2 << 6)); |
| 486 | OUT_RING(batch->start | MI_BATCH_NON_SECURE); |
| 487 | ADVANCE_LP_RING(); |
| 488 | } else { |
| 489 | BEGIN_LP_RING(4); |
| 490 | OUT_RING(MI_BATCH_BUFFER); |
| 491 | OUT_RING(batch->start | MI_BATCH_NON_SECURE); |
| 492 | OUT_RING(batch->start + batch->used - 4); |
| 493 | OUT_RING(0); |
| 494 | ADVANCE_LP_RING(); |
| 495 | } |
| 496 | } |
| 497 | |
Dave Airlie | de227f5 | 2006-01-25 15:31:43 +1100 | [diff] [blame] | 498 | i915_emit_breadcrumb(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
| 500 | return 0; |
| 501 | } |
| 502 | |
| 503 | static int i915_dispatch_flip(drm_device_t * dev) |
| 504 | { |
| 505 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 506 | RING_LOCALS; |
| 507 | |
| 508 | DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n", |
| 509 | __FUNCTION__, |
| 510 | dev_priv->current_page, |
| 511 | dev_priv->sarea_priv->pf_current_page); |
| 512 | |
| 513 | i915_kernel_lost_context(dev); |
| 514 | |
| 515 | BEGIN_LP_RING(2); |
| 516 | OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE); |
| 517 | OUT_RING(0); |
| 518 | ADVANCE_LP_RING(); |
| 519 | |
| 520 | BEGIN_LP_RING(6); |
| 521 | OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP); |
| 522 | OUT_RING(0); |
| 523 | if (dev_priv->current_page == 0) { |
| 524 | OUT_RING(dev_priv->back_offset); |
| 525 | dev_priv->current_page = 1; |
| 526 | } else { |
| 527 | OUT_RING(dev_priv->front_offset); |
| 528 | dev_priv->current_page = 0; |
| 529 | } |
| 530 | OUT_RING(0); |
| 531 | ADVANCE_LP_RING(); |
| 532 | |
| 533 | BEGIN_LP_RING(2); |
| 534 | OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP); |
| 535 | OUT_RING(0); |
| 536 | ADVANCE_LP_RING(); |
| 537 | |
| 538 | dev_priv->sarea_priv->last_enqueue = dev_priv->counter++; |
| 539 | |
| 540 | BEGIN_LP_RING(4); |
| 541 | OUT_RING(CMD_STORE_DWORD_IDX); |
| 542 | OUT_RING(20); |
| 543 | OUT_RING(dev_priv->counter); |
| 544 | OUT_RING(0); |
| 545 | ADVANCE_LP_RING(); |
| 546 | |
| 547 | dev_priv->sarea_priv->pf_current_page = dev_priv->current_page; |
| 548 | return 0; |
| 549 | } |
| 550 | |
| 551 | static int i915_quiescent(drm_device_t * dev) |
| 552 | { |
| 553 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 554 | |
| 555 | i915_kernel_lost_context(dev); |
| 556 | return i915_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__); |
| 557 | } |
| 558 | |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 559 | static int i915_flush_ioctl(DRM_IOCTL_ARGS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | { |
| 561 | DRM_DEVICE; |
| 562 | |
| 563 | LOCK_TEST_WITH_RETURN(dev, filp); |
| 564 | |
| 565 | return i915_quiescent(dev); |
| 566 | } |
| 567 | |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 568 | static int i915_batchbuffer(DRM_IOCTL_ARGS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | { |
| 570 | DRM_DEVICE; |
| 571 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 572 | u32 *hw_status = dev_priv->hw_status_page; |
| 573 | drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *) |
| 574 | dev_priv->sarea_priv; |
| 575 | drm_i915_batchbuffer_t batch; |
| 576 | int ret; |
| 577 | |
| 578 | if (!dev_priv->allow_batchbuffer) { |
| 579 | DRM_ERROR("Batchbuffer ioctl disabled\n"); |
| 580 | return DRM_ERR(EINVAL); |
| 581 | } |
| 582 | |
| 583 | DRM_COPY_FROM_USER_IOCTL(batch, (drm_i915_batchbuffer_t __user *) data, |
| 584 | sizeof(batch)); |
| 585 | |
| 586 | DRM_DEBUG("i915 batchbuffer, start %x used %d cliprects %d\n", |
| 587 | batch.start, batch.used, batch.num_cliprects); |
| 588 | |
| 589 | LOCK_TEST_WITH_RETURN(dev, filp); |
| 590 | |
| 591 | if (batch.num_cliprects && DRM_VERIFYAREA_READ(batch.cliprects, |
| 592 | batch.num_cliprects * |
| 593 | sizeof(drm_clip_rect_t))) |
| 594 | return DRM_ERR(EFAULT); |
| 595 | |
| 596 | ret = i915_dispatch_batchbuffer(dev, &batch); |
| 597 | |
| 598 | sarea_priv->last_dispatch = (int)hw_status[5]; |
| 599 | return ret; |
| 600 | } |
| 601 | |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 602 | static int i915_cmdbuffer(DRM_IOCTL_ARGS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | { |
| 604 | DRM_DEVICE; |
| 605 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 606 | u32 *hw_status = dev_priv->hw_status_page; |
| 607 | drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *) |
| 608 | dev_priv->sarea_priv; |
| 609 | drm_i915_cmdbuffer_t cmdbuf; |
| 610 | int ret; |
| 611 | |
| 612 | DRM_COPY_FROM_USER_IOCTL(cmdbuf, (drm_i915_cmdbuffer_t __user *) data, |
| 613 | sizeof(cmdbuf)); |
| 614 | |
| 615 | DRM_DEBUG("i915 cmdbuffer, buf %p sz %d cliprects %d\n", |
| 616 | cmdbuf.buf, cmdbuf.sz, cmdbuf.num_cliprects); |
| 617 | |
| 618 | LOCK_TEST_WITH_RETURN(dev, filp); |
| 619 | |
| 620 | if (cmdbuf.num_cliprects && |
| 621 | DRM_VERIFYAREA_READ(cmdbuf.cliprects, |
| 622 | cmdbuf.num_cliprects * |
| 623 | sizeof(drm_clip_rect_t))) { |
| 624 | DRM_ERROR("Fault accessing cliprects\n"); |
| 625 | return DRM_ERR(EFAULT); |
| 626 | } |
| 627 | |
| 628 | ret = i915_dispatch_cmdbuffer(dev, &cmdbuf); |
| 629 | if (ret) { |
| 630 | DRM_ERROR("i915_dispatch_cmdbuffer failed\n"); |
| 631 | return ret; |
| 632 | } |
| 633 | |
| 634 | sarea_priv->last_dispatch = (int)hw_status[5]; |
| 635 | return 0; |
| 636 | } |
| 637 | |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 638 | static int i915_flip_bufs(DRM_IOCTL_ARGS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | { |
| 640 | DRM_DEVICE; |
| 641 | |
| 642 | DRM_DEBUG("%s\n", __FUNCTION__); |
| 643 | |
| 644 | LOCK_TEST_WITH_RETURN(dev, filp); |
| 645 | |
| 646 | return i915_dispatch_flip(dev); |
| 647 | } |
| 648 | |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 649 | static int i915_getparam(DRM_IOCTL_ARGS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | { |
| 651 | DRM_DEVICE; |
| 652 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 653 | drm_i915_getparam_t param; |
| 654 | int value; |
| 655 | |
| 656 | if (!dev_priv) { |
| 657 | DRM_ERROR("%s called with no initialization\n", __FUNCTION__); |
| 658 | return DRM_ERR(EINVAL); |
| 659 | } |
| 660 | |
| 661 | DRM_COPY_FROM_USER_IOCTL(param, (drm_i915_getparam_t __user *) data, |
| 662 | sizeof(param)); |
| 663 | |
| 664 | switch (param.param) { |
| 665 | case I915_PARAM_IRQ_ACTIVE: |
| 666 | value = dev->irq ? 1 : 0; |
| 667 | break; |
| 668 | case I915_PARAM_ALLOW_BATCHBUFFER: |
| 669 | value = dev_priv->allow_batchbuffer ? 1 : 0; |
| 670 | break; |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 671 | case I915_PARAM_LAST_DISPATCH: |
| 672 | value = READ_BREADCRUMB(dev_priv); |
| 673 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | default: |
Dave Airlie | de227f5 | 2006-01-25 15:31:43 +1100 | [diff] [blame] | 675 | DRM_ERROR("Unknown parameter %d\n", param.param); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | return DRM_ERR(EINVAL); |
| 677 | } |
| 678 | |
| 679 | if (DRM_COPY_TO_USER(param.value, &value, sizeof(int))) { |
| 680 | DRM_ERROR("DRM_COPY_TO_USER failed\n"); |
| 681 | return DRM_ERR(EFAULT); |
| 682 | } |
| 683 | |
| 684 | return 0; |
| 685 | } |
| 686 | |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 687 | static int i915_setparam(DRM_IOCTL_ARGS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | { |
| 689 | DRM_DEVICE; |
| 690 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 691 | drm_i915_setparam_t param; |
| 692 | |
| 693 | if (!dev_priv) { |
| 694 | DRM_ERROR("%s called with no initialization\n", __FUNCTION__); |
| 695 | return DRM_ERR(EINVAL); |
| 696 | } |
| 697 | |
| 698 | DRM_COPY_FROM_USER_IOCTL(param, (drm_i915_setparam_t __user *) data, |
| 699 | sizeof(param)); |
| 700 | |
| 701 | switch (param.param) { |
| 702 | case I915_SETPARAM_USE_MI_BATCHBUFFER_START: |
| 703 | dev_priv->use_mi_batchbuffer_start = param.value; |
| 704 | break; |
| 705 | case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY: |
| 706 | dev_priv->tex_lru_log_granularity = param.value; |
| 707 | break; |
| 708 | case I915_SETPARAM_ALLOW_BATCHBUFFER: |
| 709 | dev_priv->allow_batchbuffer = param.value; |
| 710 | break; |
| 711 | default: |
| 712 | DRM_ERROR("unknown parameter %d\n", param.param); |
| 713 | return DRM_ERR(EINVAL); |
| 714 | } |
| 715 | |
| 716 | return 0; |
| 717 | } |
| 718 | |
Dave Airlie | 22eae94 | 2005-11-10 22:16:34 +1100 | [diff] [blame] | 719 | int i915_driver_load(drm_device_t *dev, unsigned long flags) |
| 720 | { |
| 721 | /* i915 has 4 more counters */ |
| 722 | dev->counters += 4; |
| 723 | dev->types[6] = _DRM_STAT_IRQ; |
| 724 | dev->types[7] = _DRM_STAT_PRIMARY; |
| 725 | dev->types[8] = _DRM_STAT_SECONDARY; |
| 726 | dev->types[9] = _DRM_STAT_DMA; |
| 727 | |
| 728 | return 0; |
| 729 | } |
| 730 | |
| 731 | void i915_driver_lastclose(drm_device_t * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 733 | if (dev->dev_private) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | drm_i915_private_t *dev_priv = dev->dev_private; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 735 | i915_mem_takedown(&(dev_priv->agp_heap)); |
| 736 | } |
| 737 | i915_dma_cleanup(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | } |
| 739 | |
Dave Airlie | 22eae94 | 2005-11-10 22:16:34 +1100 | [diff] [blame] | 740 | void i915_driver_preclose(drm_device_t * dev, DRMFILE filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 742 | if (dev->dev_private) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | drm_i915_private_t *dev_priv = dev->dev_private; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 744 | i915_mem_release(dev, filp, dev_priv->agp_heap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | } |
| 746 | } |
| 747 | |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 748 | drm_ioctl_desc_t i915_ioctls[] = { |
Dave Airlie | a7a2cc3 | 2006-01-02 13:54:04 +1100 | [diff] [blame] | 749 | [DRM_IOCTL_NR(DRM_I915_INIT)] = {i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
| 750 | [DRM_IOCTL_NR(DRM_I915_FLUSH)] = {i915_flush_ioctl, DRM_AUTH}, |
| 751 | [DRM_IOCTL_NR(DRM_I915_FLIP)] = {i915_flip_bufs, DRM_AUTH}, |
| 752 | [DRM_IOCTL_NR(DRM_I915_BATCHBUFFER)] = {i915_batchbuffer, DRM_AUTH}, |
| 753 | [DRM_IOCTL_NR(DRM_I915_IRQ_EMIT)] = {i915_irq_emit, DRM_AUTH}, |
| 754 | [DRM_IOCTL_NR(DRM_I915_IRQ_WAIT)] = {i915_irq_wait, DRM_AUTH}, |
| 755 | [DRM_IOCTL_NR(DRM_I915_GETPARAM)] = {i915_getparam, DRM_AUTH}, |
| 756 | [DRM_IOCTL_NR(DRM_I915_SETPARAM)] = {i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
| 757 | [DRM_IOCTL_NR(DRM_I915_ALLOC)] = {i915_mem_alloc, DRM_AUTH}, |
| 758 | [DRM_IOCTL_NR(DRM_I915_FREE)] = {i915_mem_free, DRM_AUTH}, |
| 759 | [DRM_IOCTL_NR(DRM_I915_INIT_HEAP)] = {i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
Dave Airlie | de227f5 | 2006-01-25 15:31:43 +1100 | [diff] [blame] | 760 | [DRM_IOCTL_NR(DRM_I915_CMDBUFFER)] = {i915_cmdbuffer, DRM_AUTH}, |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame^] | 761 | [DRM_IOCTL_NR(DRM_I915_DESTROY_HEAP)] = { i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, |
| 762 | [DRM_IOCTL_NR(DRM_I915_SET_VBLANK_PIPE)] = { i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, |
| 763 | [DRM_IOCTL_NR(DRM_I915_GET_VBLANK_PIPE)] = { i915_vblank_pipe_get, DRM_AUTH }, |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 764 | }; |
| 765 | |
| 766 | int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls); |
Dave Airlie | cda1738 | 2005-07-10 17:31:26 +1000 | [diff] [blame] | 767 | |
| 768 | /** |
| 769 | * Determine if the device really is AGP or not. |
| 770 | * |
| 771 | * All Intel graphics chipsets are treated as AGP, even if they are really |
| 772 | * PCI-e. |
| 773 | * |
| 774 | * \param dev The device to be tested. |
| 775 | * |
| 776 | * \returns |
| 777 | * A value of 1 is always retured to indictate every i9x5 is AGP. |
| 778 | */ |
| 779 | int i915_driver_device_is_agp(drm_device_t * dev) |
| 780 | { |
| 781 | return 1; |
| 782 | } |