i915_drv.h 20 KB

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  1. /* i915_drv.h -- Private header for the I915 driver -*- linux-c -*-
  2. */
  3. /*
  4. *
  5. * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
  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
  10. * "Software"), to deal in the Software without restriction, including
  11. * without limitation the rights to use, copy, modify, merge, publish,
  12. * distribute, sub license, and/or sell copies of the Software, and to
  13. * permit persons to whom the Software is furnished to do so, subject to
  14. * the following conditions:
  15. *
  16. * The above copyright notice and this permission notice (including the
  17. * next paragraph) shall be included in all copies or substantial portions
  18. * of the Software.
  19. *
  20. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21. * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  23. * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  24. * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  25. * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  26. * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27. *
  28. */
  29. #ifndef _I915_DRV_H_
  30. #define _I915_DRV_H_
  31. #include "i915_reg.h"
  32. #include <linux/io-mapping.h>
  33. /* General customization:
  34. */
  35. #define DRIVER_AUTHOR "Tungsten Graphics, Inc."
  36. #define DRIVER_NAME "i915"
  37. #define DRIVER_DESC "Intel Graphics"
  38. #define DRIVER_DATE "20080730"
  39. enum pipe {
  40. PIPE_A = 0,
  41. PIPE_B,
  42. };
  43. #define I915_NUM_PIPE 2
  44. /* Interface history:
  45. *
  46. * 1.1: Original.
  47. * 1.2: Add Power Management
  48. * 1.3: Add vblank support
  49. * 1.4: Fix cmdbuffer path, add heap destroy
  50. * 1.5: Add vblank pipe configuration
  51. * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
  52. * - Support vertical blank on secondary display pipe
  53. */
  54. #define DRIVER_MAJOR 1
  55. #define DRIVER_MINOR 6
  56. #define DRIVER_PATCHLEVEL 0
  57. #define WATCH_COHERENCY 0
  58. #define WATCH_BUF 0
  59. #define WATCH_EXEC 0
  60. #define WATCH_LRU 0
  61. #define WATCH_RELOC 0
  62. #define WATCH_INACTIVE 0
  63. #define WATCH_PWRITE 0
  64. typedef struct _drm_i915_ring_buffer {
  65. int tail_mask;
  66. unsigned long Size;
  67. u8 *virtual_start;
  68. int head;
  69. int tail;
  70. int space;
  71. drm_local_map_t map;
  72. struct drm_gem_object *ring_obj;
  73. } drm_i915_ring_buffer_t;
  74. struct mem_block {
  75. struct mem_block *next;
  76. struct mem_block *prev;
  77. int start;
  78. int size;
  79. struct drm_file *file_priv; /* NULL: free, -1: heap, other: real files */
  80. };
  81. struct opregion_header;
  82. struct opregion_acpi;
  83. struct opregion_swsci;
  84. struct opregion_asle;
  85. struct intel_opregion {
  86. struct opregion_header *header;
  87. struct opregion_acpi *acpi;
  88. struct opregion_swsci *swsci;
  89. struct opregion_asle *asle;
  90. int enabled;
  91. };
  92. typedef struct drm_i915_private {
  93. struct drm_device *dev;
  94. int has_gem;
  95. void __iomem *regs;
  96. drm_local_map_t *sarea;
  97. drm_i915_sarea_t *sarea_priv;
  98. drm_i915_ring_buffer_t ring;
  99. drm_dma_handle_t *status_page_dmah;
  100. void *hw_status_page;
  101. dma_addr_t dma_status_page;
  102. uint32_t counter;
  103. unsigned int status_gfx_addr;
  104. drm_local_map_t hws_map;
  105. struct drm_gem_object *hws_obj;
  106. unsigned int cpp;
  107. int back_offset;
  108. int front_offset;
  109. int current_page;
  110. int page_flipping;
  111. wait_queue_head_t irq_queue;
  112. atomic_t irq_received;
  113. /** Protects user_irq_refcount and irq_mask_reg */
  114. spinlock_t user_irq_lock;
  115. /** Refcount for i915_user_irq_get() versus i915_user_irq_put(). */
  116. int user_irq_refcount;
  117. /** Cached value of IMR to avoid reads in updating the bitfield */
  118. u32 irq_mask_reg;
  119. u32 pipestat[2];
  120. int tex_lru_log_granularity;
  121. int allow_batchbuffer;
  122. struct mem_block *agp_heap;
  123. unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds;
  124. int vblank_pipe;
  125. struct intel_opregion opregion;
  126. /* Register state */
  127. u8 saveLBB;
  128. u32 saveDSPACNTR;
  129. u32 saveDSPBCNTR;
  130. u32 saveDSPARB;
  131. u32 saveRENDERSTANDBY;
  132. u32 saveHWS;
  133. u32 savePIPEACONF;
  134. u32 savePIPEBCONF;
  135. u32 savePIPEASRC;
  136. u32 savePIPEBSRC;
  137. u32 saveFPA0;
  138. u32 saveFPA1;
  139. u32 saveDPLL_A;
  140. u32 saveDPLL_A_MD;
  141. u32 saveHTOTAL_A;
  142. u32 saveHBLANK_A;
  143. u32 saveHSYNC_A;
  144. u32 saveVTOTAL_A;
  145. u32 saveVBLANK_A;
  146. u32 saveVSYNC_A;
  147. u32 saveBCLRPAT_A;
  148. u32 savePIPEASTAT;
  149. u32 saveDSPASTRIDE;
  150. u32 saveDSPASIZE;
  151. u32 saveDSPAPOS;
  152. u32 saveDSPAADDR;
  153. u32 saveDSPASURF;
  154. u32 saveDSPATILEOFF;
  155. u32 savePFIT_PGM_RATIOS;
  156. u32 saveBLC_PWM_CTL;
  157. u32 saveBLC_PWM_CTL2;
  158. u32 saveFPB0;
  159. u32 saveFPB1;
  160. u32 saveDPLL_B;
  161. u32 saveDPLL_B_MD;
  162. u32 saveHTOTAL_B;
  163. u32 saveHBLANK_B;
  164. u32 saveHSYNC_B;
  165. u32 saveVTOTAL_B;
  166. u32 saveVBLANK_B;
  167. u32 saveVSYNC_B;
  168. u32 saveBCLRPAT_B;
  169. u32 savePIPEBSTAT;
  170. u32 saveDSPBSTRIDE;
  171. u32 saveDSPBSIZE;
  172. u32 saveDSPBPOS;
  173. u32 saveDSPBADDR;
  174. u32 saveDSPBSURF;
  175. u32 saveDSPBTILEOFF;
  176. u32 saveVGA0;
  177. u32 saveVGA1;
  178. u32 saveVGA_PD;
  179. u32 saveVGACNTRL;
  180. u32 saveADPA;
  181. u32 saveLVDS;
  182. u32 savePP_ON_DELAYS;
  183. u32 savePP_OFF_DELAYS;
  184. u32 saveDVOA;
  185. u32 saveDVOB;
  186. u32 saveDVOC;
  187. u32 savePP_ON;
  188. u32 savePP_OFF;
  189. u32 savePP_CONTROL;
  190. u32 savePP_DIVISOR;
  191. u32 savePFIT_CONTROL;
  192. u32 save_palette_a[256];
  193. u32 save_palette_b[256];
  194. u32 saveFBC_CFB_BASE;
  195. u32 saveFBC_LL_BASE;
  196. u32 saveFBC_CONTROL;
  197. u32 saveFBC_CONTROL2;
  198. u32 saveIER;
  199. u32 saveIIR;
  200. u32 saveIMR;
  201. u32 saveCACHE_MODE_0;
  202. u32 saveD_STATE;
  203. u32 saveCG_2D_DIS;
  204. u32 saveMI_ARB_STATE;
  205. u32 saveSWF0[16];
  206. u32 saveSWF1[16];
  207. u32 saveSWF2[3];
  208. u8 saveMSR;
  209. u8 saveSR[8];
  210. u8 saveGR[25];
  211. u8 saveAR_INDEX;
  212. u8 saveAR[21];
  213. u8 saveDACMASK;
  214. u8 saveDACDATA[256*3]; /* 256 3-byte colors */
  215. u8 saveCR[37];
  216. struct {
  217. struct drm_mm gtt_space;
  218. struct io_mapping *gtt_mapping;
  219. /**
  220. * List of objects currently involved in rendering from the
  221. * ringbuffer.
  222. *
  223. * Includes buffers having the contents of their GPU caches
  224. * flushed, not necessarily primitives. last_rendering_seqno
  225. * represents when the rendering involved will be completed.
  226. *
  227. * A reference is held on the buffer while on this list.
  228. */
  229. struct list_head active_list;
  230. /**
  231. * List of objects which are not in the ringbuffer but which
  232. * still have a write_domain which needs to be flushed before
  233. * unbinding.
  234. *
  235. * last_rendering_seqno is 0 while an object is in this list.
  236. *
  237. * A reference is held on the buffer while on this list.
  238. */
  239. struct list_head flushing_list;
  240. /**
  241. * LRU list of objects which are not in the ringbuffer and
  242. * are ready to unbind, but are still in the GTT.
  243. *
  244. * last_rendering_seqno is 0 while an object is in this list.
  245. *
  246. * A reference is not held on the buffer while on this list,
  247. * as merely being GTT-bound shouldn't prevent its being
  248. * freed, and we'll pull it off the list in the free path.
  249. */
  250. struct list_head inactive_list;
  251. /**
  252. * List of breadcrumbs associated with GPU requests currently
  253. * outstanding.
  254. */
  255. struct list_head request_list;
  256. /**
  257. * We leave the user IRQ off as much as possible,
  258. * but this means that requests will finish and never
  259. * be retired once the system goes idle. Set a timer to
  260. * fire periodically while the ring is running. When it
  261. * fires, go retire requests.
  262. */
  263. struct delayed_work retire_work;
  264. uint32_t next_gem_seqno;
  265. /**
  266. * Waiting sequence number, if any
  267. */
  268. uint32_t waiting_gem_seqno;
  269. /**
  270. * Last seq seen at irq time
  271. */
  272. uint32_t irq_gem_seqno;
  273. /**
  274. * Flag if the X Server, and thus DRM, is not currently in
  275. * control of the device.
  276. *
  277. * This is set between LeaveVT and EnterVT. It needs to be
  278. * replaced with a semaphore. It also needs to be
  279. * transitioned away from for kernel modesetting.
  280. */
  281. int suspended;
  282. /**
  283. * Flag if the hardware appears to be wedged.
  284. *
  285. * This is set when attempts to idle the device timeout.
  286. * It prevents command submission from occuring and makes
  287. * every pending request fail
  288. */
  289. int wedged;
  290. /** Bit 6 swizzling required for X tiling */
  291. uint32_t bit_6_swizzle_x;
  292. /** Bit 6 swizzling required for Y tiling */
  293. uint32_t bit_6_swizzle_y;
  294. } mm;
  295. } drm_i915_private_t;
  296. /** driver private structure attached to each drm_gem_object */
  297. struct drm_i915_gem_object {
  298. struct drm_gem_object *obj;
  299. /** Current space allocated to this object in the GTT, if any. */
  300. struct drm_mm_node *gtt_space;
  301. /** This object's place on the active/flushing/inactive lists */
  302. struct list_head list;
  303. /**
  304. * This is set if the object is on the active or flushing lists
  305. * (has pending rendering), and is not set if it's on inactive (ready
  306. * to be unbound).
  307. */
  308. int active;
  309. /**
  310. * This is set if the object has been written to since last bound
  311. * to the GTT
  312. */
  313. int dirty;
  314. /** AGP memory structure for our GTT binding. */
  315. DRM_AGP_MEM *agp_mem;
  316. struct page **page_list;
  317. /**
  318. * Current offset of the object in GTT space.
  319. *
  320. * This is the same as gtt_space->start
  321. */
  322. uint32_t gtt_offset;
  323. /** Boolean whether this object has a valid gtt offset. */
  324. int gtt_bound;
  325. /** How many users have pinned this object in GTT space */
  326. int pin_count;
  327. /** Breadcrumb of last rendering to the buffer. */
  328. uint32_t last_rendering_seqno;
  329. /** Current tiling mode for the object. */
  330. uint32_t tiling_mode;
  331. /** AGP mapping type (AGP_USER_MEMORY or AGP_USER_CACHED_MEMORY */
  332. uint32_t agp_type;
  333. /**
  334. * If present, while GEM_DOMAIN_CPU is in the read domain this array
  335. * flags which individual pages are valid.
  336. */
  337. uint8_t *page_cpu_valid;
  338. };
  339. /**
  340. * Request queue structure.
  341. *
  342. * The request queue allows us to note sequence numbers that have been emitted
  343. * and may be associated with active buffers to be retired.
  344. *
  345. * By keeping this list, we can avoid having to do questionable
  346. * sequence-number comparisons on buffer last_rendering_seqnos, and associate
  347. * an emission time with seqnos for tracking how far ahead of the GPU we are.
  348. */
  349. struct drm_i915_gem_request {
  350. /** GEM sequence number associated with this request. */
  351. uint32_t seqno;
  352. /** Time at which this request was emitted, in jiffies. */
  353. unsigned long emitted_jiffies;
  354. struct list_head list;
  355. };
  356. struct drm_i915_file_private {
  357. struct {
  358. uint32_t last_gem_seqno;
  359. uint32_t last_gem_throttle_seqno;
  360. } mm;
  361. };
  362. extern struct drm_ioctl_desc i915_ioctls[];
  363. extern int i915_max_ioctl;
  364. /* i915_dma.c */
  365. extern void i915_kernel_lost_context(struct drm_device * dev);
  366. extern int i915_driver_load(struct drm_device *, unsigned long flags);
  367. extern int i915_driver_unload(struct drm_device *);
  368. extern int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv);
  369. extern void i915_driver_lastclose(struct drm_device * dev);
  370. extern void i915_driver_preclose(struct drm_device *dev,
  371. struct drm_file *file_priv);
  372. extern void i915_driver_postclose(struct drm_device *dev,
  373. struct drm_file *file_priv);
  374. extern int i915_driver_device_is_agp(struct drm_device * dev);
  375. extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
  376. unsigned long arg);
  377. extern int i915_emit_box(struct drm_device *dev,
  378. struct drm_clip_rect __user *boxes,
  379. int i, int DR1, int DR4);
  380. /* i915_irq.c */
  381. extern int i915_irq_emit(struct drm_device *dev, void *data,
  382. struct drm_file *file_priv);
  383. extern int i915_irq_wait(struct drm_device *dev, void *data,
  384. struct drm_file *file_priv);
  385. void i915_user_irq_get(struct drm_device *dev);
  386. void i915_user_irq_put(struct drm_device *dev);
  387. extern irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS);
  388. extern void i915_driver_irq_preinstall(struct drm_device * dev);
  389. extern int i915_driver_irq_postinstall(struct drm_device *dev);
  390. extern void i915_driver_irq_uninstall(struct drm_device * dev);
  391. extern int i915_vblank_pipe_set(struct drm_device *dev, void *data,
  392. struct drm_file *file_priv);
  393. extern int i915_vblank_pipe_get(struct drm_device *dev, void *data,
  394. struct drm_file *file_priv);
  395. extern int i915_enable_vblank(struct drm_device *dev, int crtc);
  396. extern void i915_disable_vblank(struct drm_device *dev, int crtc);
  397. extern u32 i915_get_vblank_counter(struct drm_device *dev, int crtc);
  398. extern int i915_vblank_swap(struct drm_device *dev, void *data,
  399. struct drm_file *file_priv);
  400. extern void i915_enable_irq(drm_i915_private_t *dev_priv, u32 mask);
  401. void
  402. i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
  403. void
  404. i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
  405. /* i915_mem.c */
  406. extern int i915_mem_alloc(struct drm_device *dev, void *data,
  407. struct drm_file *file_priv);
  408. extern int i915_mem_free(struct drm_device *dev, void *data,
  409. struct drm_file *file_priv);
  410. extern int i915_mem_init_heap(struct drm_device *dev, void *data,
  411. struct drm_file *file_priv);
  412. extern int i915_mem_destroy_heap(struct drm_device *dev, void *data,
  413. struct drm_file *file_priv);
  414. extern void i915_mem_takedown(struct mem_block **heap);
  415. extern void i915_mem_release(struct drm_device * dev,
  416. struct drm_file *file_priv, struct mem_block *heap);
  417. /* i915_gem.c */
  418. int i915_gem_init_ioctl(struct drm_device *dev, void *data,
  419. struct drm_file *file_priv);
  420. int i915_gem_create_ioctl(struct drm_device *dev, void *data,
  421. struct drm_file *file_priv);
  422. int i915_gem_pread_ioctl(struct drm_device *dev, void *data,
  423. struct drm_file *file_priv);
  424. int i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
  425. struct drm_file *file_priv);
  426. int i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
  427. struct drm_file *file_priv);
  428. int i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
  429. struct drm_file *file_priv);
  430. int i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
  431. struct drm_file *file_priv);
  432. int i915_gem_execbuffer(struct drm_device *dev, void *data,
  433. struct drm_file *file_priv);
  434. int i915_gem_pin_ioctl(struct drm_device *dev, void *data,
  435. struct drm_file *file_priv);
  436. int i915_gem_unpin_ioctl(struct drm_device *dev, void *data,
  437. struct drm_file *file_priv);
  438. int i915_gem_busy_ioctl(struct drm_device *dev, void *data,
  439. struct drm_file *file_priv);
  440. int i915_gem_throttle_ioctl(struct drm_device *dev, void *data,
  441. struct drm_file *file_priv);
  442. int i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
  443. struct drm_file *file_priv);
  444. int i915_gem_leavevt_ioctl(struct drm_device *dev, void *data,
  445. struct drm_file *file_priv);
  446. int i915_gem_set_tiling(struct drm_device *dev, void *data,
  447. struct drm_file *file_priv);
  448. int i915_gem_get_tiling(struct drm_device *dev, void *data,
  449. struct drm_file *file_priv);
  450. int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
  451. struct drm_file *file_priv);
  452. void i915_gem_load(struct drm_device *dev);
  453. int i915_gem_proc_init(struct drm_minor *minor);
  454. void i915_gem_proc_cleanup(struct drm_minor *minor);
  455. int i915_gem_init_object(struct drm_gem_object *obj);
  456. void i915_gem_free_object(struct drm_gem_object *obj);
  457. int i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment);
  458. void i915_gem_object_unpin(struct drm_gem_object *obj);
  459. void i915_gem_lastclose(struct drm_device *dev);
  460. uint32_t i915_get_gem_seqno(struct drm_device *dev);
  461. void i915_gem_retire_requests(struct drm_device *dev);
  462. void i915_gem_retire_work_handler(struct work_struct *work);
  463. void i915_gem_clflush_object(struct drm_gem_object *obj);
  464. /* i915_gem_tiling.c */
  465. void i915_gem_detect_bit_6_swizzle(struct drm_device *dev);
  466. /* i915_gem_debug.c */
  467. void i915_gem_dump_object(struct drm_gem_object *obj, int len,
  468. const char *where, uint32_t mark);
  469. #if WATCH_INACTIVE
  470. void i915_verify_inactive(struct drm_device *dev, char *file, int line);
  471. #else
  472. #define i915_verify_inactive(dev, file, line)
  473. #endif
  474. void i915_gem_object_check_coherency(struct drm_gem_object *obj, int handle);
  475. void i915_gem_dump_object(struct drm_gem_object *obj, int len,
  476. const char *where, uint32_t mark);
  477. void i915_dump_lru(struct drm_device *dev, const char *where);
  478. /* i915_suspend.c */
  479. extern int i915_save_state(struct drm_device *dev);
  480. extern int i915_restore_state(struct drm_device *dev);
  481. /* i915_suspend.c */
  482. extern int i915_save_state(struct drm_device *dev);
  483. extern int i915_restore_state(struct drm_device *dev);
  484. #ifdef CONFIG_ACPI
  485. /* i915_opregion.c */
  486. extern int intel_opregion_init(struct drm_device *dev);
  487. extern void intel_opregion_free(struct drm_device *dev);
  488. extern void opregion_asle_intr(struct drm_device *dev);
  489. extern void opregion_enable_asle(struct drm_device *dev);
  490. #else
  491. static inline int intel_opregion_init(struct drm_device *dev) { return 0; }
  492. static inline void intel_opregion_free(struct drm_device *dev) { return; }
  493. static inline void opregion_asle_intr(struct drm_device *dev) { return; }
  494. static inline void opregion_enable_asle(struct drm_device *dev) { return; }
  495. #endif
  496. /**
  497. * Lock test for when it's just for synchronization of ring access.
  498. *
  499. * In that case, we don't need to do it when GEM is initialized as nobody else
  500. * has access to the ring.
  501. */
  502. #define RING_LOCK_TEST_WITH_RETURN(dev, file_priv) do { \
  503. if (((drm_i915_private_t *)dev->dev_private)->ring.ring_obj == NULL) \
  504. LOCK_TEST_WITH_RETURN(dev, file_priv); \
  505. } while (0)
  506. #define I915_READ(reg) readl(dev_priv->regs + (reg))
  507. #define I915_WRITE(reg, val) writel(val, dev_priv->regs + (reg))
  508. #define I915_READ16(reg) readw(dev_priv->regs + (reg))
  509. #define I915_WRITE16(reg, val) writel(val, dev_priv->regs + (reg))
  510. #define I915_READ8(reg) readb(dev_priv->regs + (reg))
  511. #define I915_WRITE8(reg, val) writeb(val, dev_priv->regs + (reg))
  512. #define I915_VERBOSE 0
  513. #define RING_LOCALS unsigned int outring, ringmask, outcount; \
  514. volatile char *virt;
  515. #define BEGIN_LP_RING(n) do { \
  516. if (I915_VERBOSE) \
  517. DRM_DEBUG("BEGIN_LP_RING(%d)\n", (n)); \
  518. if (dev_priv->ring.space < (n)*4) \
  519. i915_wait_ring(dev, (n)*4, __func__); \
  520. outcount = 0; \
  521. outring = dev_priv->ring.tail; \
  522. ringmask = dev_priv->ring.tail_mask; \
  523. virt = dev_priv->ring.virtual_start; \
  524. } while (0)
  525. #define OUT_RING(n) do { \
  526. if (I915_VERBOSE) DRM_DEBUG(" OUT_RING %x\n", (int)(n)); \
  527. *(volatile unsigned int *)(virt + outring) = (n); \
  528. outcount++; \
  529. outring += 4; \
  530. outring &= ringmask; \
  531. } while (0)
  532. #define ADVANCE_LP_RING() do { \
  533. if (I915_VERBOSE) DRM_DEBUG("ADVANCE_LP_RING %x\n", outring); \
  534. dev_priv->ring.tail = outring; \
  535. dev_priv->ring.space -= outcount * 4; \
  536. I915_WRITE(PRB0_TAIL, outring); \
  537. } while(0)
  538. /**
  539. * Reads a dword out of the status page, which is written to from the command
  540. * queue by automatic updates, MI_REPORT_HEAD, MI_STORE_DATA_INDEX, or
  541. * MI_STORE_DATA_IMM.
  542. *
  543. * The following dwords have a reserved meaning:
  544. * 0x00: ISR copy, updated when an ISR bit not set in the HWSTAM changes.
  545. * 0x04: ring 0 head pointer
  546. * 0x05: ring 1 head pointer (915-class)
  547. * 0x06: ring 2 head pointer (915-class)
  548. * 0x10-0x1b: Context status DWords (GM45)
  549. * 0x1f: Last written status offset. (GM45)
  550. *
  551. * The area from dword 0x20 to 0x3ff is available for driver usage.
  552. */
  553. #define READ_HWSP(dev_priv, reg) (((volatile u32*)(dev_priv->hw_status_page))[reg])
  554. #define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX)
  555. #define I915_GEM_HWS_INDEX 0x20
  556. #define I915_BREADCRUMB_INDEX 0x21
  557. extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
  558. #define IS_I830(dev) ((dev)->pci_device == 0x3577)
  559. #define IS_845G(dev) ((dev)->pci_device == 0x2562)
  560. #define IS_I85X(dev) ((dev)->pci_device == 0x3582)
  561. #define IS_I855(dev) ((dev)->pci_device == 0x3582)
  562. #define IS_I865G(dev) ((dev)->pci_device == 0x2572)
  563. #define IS_I915G(dev) ((dev)->pci_device == 0x2582 || (dev)->pci_device == 0x258a)
  564. #define IS_I915GM(dev) ((dev)->pci_device == 0x2592)
  565. #define IS_I945G(dev) ((dev)->pci_device == 0x2772)
  566. #define IS_I945GM(dev) ((dev)->pci_device == 0x27A2 ||\
  567. (dev)->pci_device == 0x27AE)
  568. #define IS_I965G(dev) ((dev)->pci_device == 0x2972 || \
  569. (dev)->pci_device == 0x2982 || \
  570. (dev)->pci_device == 0x2992 || \
  571. (dev)->pci_device == 0x29A2 || \
  572. (dev)->pci_device == 0x2A02 || \
  573. (dev)->pci_device == 0x2A12 || \
  574. (dev)->pci_device == 0x2A42 || \
  575. (dev)->pci_device == 0x2E02 || \
  576. (dev)->pci_device == 0x2E12 || \
  577. (dev)->pci_device == 0x2E22)
  578. #define IS_I965GM(dev) ((dev)->pci_device == 0x2A02)
  579. #define IS_GM45(dev) ((dev)->pci_device == 0x2A42)
  580. #define IS_G4X(dev) ((dev)->pci_device == 0x2E02 || \
  581. (dev)->pci_device == 0x2E12 || \
  582. (dev)->pci_device == 0x2E22)
  583. #define IS_G33(dev) ((dev)->pci_device == 0x29C2 || \
  584. (dev)->pci_device == 0x29B2 || \
  585. (dev)->pci_device == 0x29D2)
  586. #define IS_I9XX(dev) (IS_I915G(dev) || IS_I915GM(dev) || IS_I945G(dev) || \
  587. IS_I945GM(dev) || IS_I965G(dev) || IS_G33(dev))
  588. #define IS_MOBILE(dev) (IS_I830(dev) || IS_I85X(dev) || IS_I915GM(dev) || \
  589. IS_I945GM(dev) || IS_I965GM(dev) || IS_GM45(dev))
  590. #define I915_NEED_GFX_HWS(dev) (IS_G33(dev) || IS_GM45(dev) || IS_G4X(dev))
  591. #define PRIMARY_RINGBUFFER_SIZE (128*1024)
  592. #endif