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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 
     30 #ifndef _I915_DRV_H_
     31 #define _I915_DRV_H_
     32 
     33 #include "i915_reg.h"
     34 
     35 /* General customization:
     36  */
     37 
     38 #define DRIVER_AUTHOR		"Tungsten Graphics, Inc."
     39 
     40 #define DRIVER_NAME		"i915"
     41 #define DRIVER_DESC		"Intel Graphics"
     42 #define DRIVER_DATE		"20080730"
     43 
     44 enum pipex {
     45 	PIPE_A = 0,
     46 	PIPE_B,
     47 };
     48 
     49 #define I915_NUM_PIPE	2
     50 
     51 /* Interface history:
     52  *
     53  * 1.1: Original.
     54  * 1.2: Add Power Management
     55  * 1.3: Add vblank support
     56  * 1.4: Fix cmdbuffer path, add heap destroy
     57  * 1.5: Add vblank pipe configuration
     58  * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
     59  *      - Support vertical blank on secondary display pipe
     60  */
     61 #define DRIVER_MAJOR		1
     62 #define DRIVER_MINOR		6
     63 #define DRIVER_PATCHLEVEL	0
     64 
     65 #define WATCH_COHERENCY	0
     66 #define WATCH_BUF	0
     67 #define WATCH_EXEC	0
     68 #define WATCH_LRU	0
     69 #define WATCH_RELOC	0
     70 #define WATCH_INACTIVE	0
     71 #define WATCH_PWRITE	0
     72 
     73 typedef struct _drm_i915_ring_buffer {
     74 	int tail_mask;
     75 	unsigned long Size;
     76 	u8 *virtual_start;
     77 	int head;
     78 	int tail;
     79 	int space;
     80 	drm_local_map_t map;
     81 	struct drm_gem_object *ring_obj;
     82 } drm_i915_ring_buffer_t;
     83 
     84 struct mem_block {
     85 	struct mem_block *next;
     86 	struct mem_block *prev;
     87 	int start;
     88 	int size;
     89 	struct drm_file *file_priv; /* NULL: free, -1: heap, other: real files */
     90 };
     91 
     92 struct opregion_header;
     93 struct opregion_acpi;
     94 struct opregion_swsci;
     95 struct opregion_asle;
     96 
     97 struct intel_opregion {
     98 	struct opregion_header *header;
     99 	struct opregion_acpi *acpi;
    100 	struct opregion_swsci *swsci;
    101 	struct opregion_asle *asle;
    102 	int enabled;
    103 };
    104 
    105 typedef struct drm_i915_private {
    106 	struct drm_device *dev;
    107 
    108 	drm_local_map_t *sarea;
    109 	drm_local_map_t *mmio_map;
    110 
    111 	drm_i915_sarea_t *sarea_priv;
    112 	drm_i915_ring_buffer_t ring;
    113 
    114 	drm_dma_handle_t *status_page_dmah;
    115 	void *hw_status_page;
    116 	dma_addr_t dma_status_page;
    117 	uint32_t counter;
    118 	unsigned int status_gfx_addr;
    119 	drm_local_map_t hws_map;
    120 	struct drm_gem_object *hws_obj;
    121 
    122 	unsigned int cpp;
    123 	int back_offset;
    124 	int front_offset;
    125 	int current_page;
    126 	int page_flipping;
    127 
    128 	wait_queue_head_t irq_queue;
    129 	atomic_t irq_received;
    130 	/** Protects user_irq_refcount and irq_mask_reg */
    131 	DRM_SPINTYPE user_irq_lock;
    132 	/** Refcount for i915_user_irq_get() versus i915_user_irq_put(). */
    133 	int user_irq_refcount;
    134 	/** Cached value of IER to avoid reads in updating the bitfield */
    135 	u32 irq_mask_reg;
    136 	u32 pipestat[2];
    137 
    138 	int tex_lru_log_granularity;
    139 	int allow_batchbuffer;
    140 	struct mem_block *agp_heap;
    141 	unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds;
    142 	int vblank_pipe;
    143 
    144 	struct intel_opregion opregion;
    145 
    146 	/* Register state */
    147 	u8 saveLBB;
    148 	u32 saveDSPACNTR;
    149 	u32 saveDSPBCNTR;
    150 	u32 saveDSPARB;
    151 	u32 savePIPEACONF;
    152 	u32 savePIPEBCONF;
    153 	u32 savePIPEASRC;
    154 	u32 savePIPEBSRC;
    155 	u32 saveFPA0;
    156 	u32 saveFPA1;
    157 	u32 saveDPLL_A;
    158 	u32 saveDPLL_A_MD;
    159 	u32 saveHTOTAL_A;
    160 	u32 saveHBLANK_A;
    161 	u32 saveHSYNC_A;
    162 	u32 saveVTOTAL_A;
    163 	u32 saveVBLANK_A;
    164 	u32 saveVSYNC_A;
    165 	u32 saveBCLRPAT_A;
    166 	u32 savePIPEASTAT;
    167 	u32 saveDSPASTRIDE;
    168 	u32 saveDSPASIZE;
    169 	u32 saveDSPAPOS;
    170 	u32 saveDSPAADDR;
    171 	u32 saveDSPASURF;
    172 	u32 saveDSPATILEOFF;
    173 	u32 savePFIT_PGM_RATIOS;
    174 	u32 saveBLC_PWM_CTL;
    175 	u32 saveBLC_PWM_CTL2;
    176 	u32 saveFPB0;
    177 	u32 saveFPB1;
    178 	u32 saveDPLL_B;
    179 	u32 saveDPLL_B_MD;
    180 	u32 saveHTOTAL_B;
    181 	u32 saveHBLANK_B;
    182 	u32 saveHSYNC_B;
    183 	u32 saveVTOTAL_B;
    184 	u32 saveVBLANK_B;
    185 	u32 saveVSYNC_B;
    186 	u32 saveBCLRPAT_B;
    187 	u32 savePIPEBSTAT;
    188 	u32 saveDSPBSTRIDE;
    189 	u32 saveDSPBSIZE;
    190 	u32 saveDSPBPOS;
    191 	u32 saveDSPBADDR;
    192 	u32 saveDSPBSURF;
    193 	u32 saveDSPBTILEOFF;
    194 	u32 saveVGA0;
    195 	u32 saveVGA1;
    196 	u32 saveVGA_PD;
    197 	u32 saveVGACNTRL;
    198 	u32 saveADPA;
    199 	u32 saveLVDS;
    200 	u32 savePP_ON_DELAYS;
    201 	u32 savePP_OFF_DELAYS;
    202 	u32 saveDVOA;
    203 	u32 saveDVOB;
    204 	u32 saveDVOC;
    205 	u32 savePP_ON;
    206 	u32 savePP_OFF;
    207 	u32 savePP_CONTROL;
    208 	u32 savePP_DIVISOR;
    209 	u32 savePFIT_CONTROL;
    210 	u32 save_palette_a[256];
    211 	u32 save_palette_b[256];
    212 	u32 saveFBC_CFB_BASE;
    213 	u32 saveFBC_LL_BASE;
    214 	u32 saveFBC_CONTROL;
    215 	u32 saveFBC_CONTROL2;
    216 	u32 saveIER;
    217 	u32 saveIIR;
    218 	u32 saveIMR;
    219 	u32 saveCACHE_MODE_0;
    220 	u32 saveD_STATE;
    221 	u32 saveCG_2D_DIS;
    222 	u32 saveMI_ARB_STATE;
    223 	u32 saveSWF0[16];
    224 	u32 saveSWF1[16];
    225 	u32 saveSWF2[3];
    226 	u8 saveMSR;
    227 	u8 saveSR[8];
    228 	u8 saveGR[25];
    229 	u8 saveAR_INDEX;
    230 	u8 saveAR[21];
    231 	u8 saveDACMASK;
    232 	u8 saveDACDATA[256*3]; /* 256 3-byte colors */
    233 	u8 saveCR[37];
    234 	struct {
    235 		/**
    236 		 * List of objects currently involved in rendering from the
    237 		 * ringbuffer.
    238 		 *
    239 		 * A reference is held on the buffer while on this list.
    240 		 */
    241 		struct list_head active_list;
    242 
    243 		/**
    244 		 * List of objects which are not in the ringbuffer but which
    245 		 * still have a write_domain which needs to be flushed before
    246 		 * unbinding.
    247 		 *
    248 		 * A reference is held on the buffer while on this list.
    249 		 */
    250 		struct list_head flushing_list;
    251 
    252 		/**
    253 		 * LRU list of objects which are not in the ringbuffer and
    254 		 * are ready to unbind, but are still in the GTT.
    255 		 *
    256 		 * A reference is not held on the buffer while on this list,
    257 		 * as merely being GTT-bound shouldn't prevent its being
    258 		 * freed, and we'll pull it off the list in the free path.
    259 		 */
    260 		struct list_head inactive_list;
    261 
    262 		/**
    263 		 * List of breadcrumbs associated with GPU requests currently
    264 		 * outstanding.
    265 		 */
    266 		struct list_head request_list;
    267 		uint32_t next_gem_seqno;
    268 
    269 		/**
    270 		 * Waiting sequence number, if any
    271 		 */
    272 		uint32_t waiting_gem_seqno;
    273 
    274 		/**
    275 		 * Last seq seen at irq time
    276 		 */
    277 		uint32_t irq_gem_seqno;
    278 
    279 		/**
    280 		 * Flag if the X Server, and thus DRM, is not currently in
    281 		 * control of the device.
    282 		 *
    283 		 * This is set between LeaveVT and EnterVT.  It needs to be
    284 		 * replaced with a semaphore.  It also needs to be
    285 		 * transitioned away from for kernel modesetting.
    286 		 */
    287 		int suspended;
    288 
    289 		/**
    290 		 * Flag if the hardware appears to be wedged.
    291 		 *
    292 		 * This is set when attempts to idle the device timeout.
    293 		 * It prevents command submission from occuring and makes
    294 		 * every pending request fail
    295 		 */
    296 		int wedged;
    297 
    298 		/** Bit 6 swizzling required for X tiling */
    299 		uint32_t bit_6_swizzle_x;
    300 		/** Bit 6 swizzling required for Y tiling */
    301 		uint32_t bit_6_swizzle_y;
    302 	} mm;
    303 } drm_i915_private_t;
    304 
    305 enum intel_chip_family {
    306 	CHIP_I8XX = 0x01,
    307 	CHIP_I9XX = 0x02,
    308 	CHIP_I915 = 0x04,
    309 	CHIP_I965 = 0x08,
    310 };
    311 
    312 /** driver private structure attached to each drm_gem_object */
    313 struct drm_i915_gem_object {
    314 	struct drm_gem_object *obj;
    315 
    316 	/** Current space allocated to this object in the GTT, if any. */
    317 	struct drm_mm_node *gtt_space;
    318 
    319 	/** This object's place on the active/flushing/inactive lists */
    320 	struct list_head list;
    321 
    322 	/**
    323 	 * This is set if the object is on the active or flushing lists
    324 	 * (has pending rendering), and is not set if it's on inactive (ready
    325 	 * to be unbound).
    326 	 */
    327 	int active;
    328 
    329 	/**
    330 	 * This is set if the object has been written to since last bound
    331 	 * to the GTT
    332 	 */
    333 	int dirty;
    334 
    335 	/** AGP memory structure for our GTT binding. */
    336 	DRM_AGP_MEM *agp_mem;
    337 
    338 	struct page **page_list;
    339 
    340 	/**
    341 	 * Current offset of the object in GTT space.
    342 	 *
    343 	 * This is the same as gtt_space->start
    344 	 */
    345 	uint32_t gtt_offset;
    346 
    347 	/** Boolean whether this object has a valid gtt offset. */
    348 	int gtt_bound;
    349 
    350 	/** How many users have pinned this object in GTT space */
    351 	int pin_count;
    352 
    353 	/** Breadcrumb of last rendering to the buffer. */
    354 	uint32_t last_rendering_seqno;
    355 
    356 	/** Current tiling mode for the object. */
    357 	uint32_t tiling_mode;
    358 
    359 	/** AGP mapping type (AGP_USER_MEMORY or AGP_USER_CACHED_MEMORY */
    360 	uint32_t agp_type;
    361 
    362 	/**
    363 	 * Flagging of which individual pages are valid in GEM_DOMAIN_CPU when
    364 	 * GEM_DOMAIN_CPU is not in the object's read domain.
    365 	 */
    366 	uint8_t *page_cpu_valid;
    367 };
    368 
    369 /**
    370  * Request queue structure.
    371  *
    372  * The request queue allows us to note sequence numbers that have been emitted
    373  * and may be associated with active buffers to be retired.
    374  *
    375  * By keeping this list, we can avoid having to do questionable
    376  * sequence-number comparisons on buffer last_rendering_seqnos, and associate
    377  * an emission time with seqnos for tracking how far ahead of the GPU we are.
    378  */
    379 struct drm_i915_gem_request {
    380 	/** GEM sequence number associated with this request. */
    381 	uint32_t seqno;
    382 
    383 	/** Time at which this request was emitted, in jiffies. */
    384 	unsigned long emitted_jiffies;
    385 
    386 	/** Cache domains that were flushed at the start of the request. */
    387 	uint32_t flush_domains;
    388 
    389 	struct list_head list;
    390 };
    391 
    392 struct drm_i915_file_private {
    393 	struct {
    394 		uint32_t last_gem_seqno;
    395 		uint32_t last_gem_throttle_seqno;
    396 	} mm;
    397 };
    398 
    399 extern struct drm_ioctl_desc i915_ioctls[];
    400 extern int i915_max_ioctl;
    401 
    402 				/* i915_dma.c */
    403 extern void i915_kernel_lost_context(struct drm_device * dev);
    404 extern int i915_driver_load(struct drm_device *, unsigned long flags);
    405 extern int i915_driver_unload(struct drm_device *);
    406 extern int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv);
    407 extern void i915_driver_lastclose(struct drm_device * dev);
    408 extern void i915_driver_preclose(struct drm_device *dev,
    409 				 struct drm_file *file_priv);
    410 extern void i915_driver_postclose(struct drm_device *dev,
    411 				  struct drm_file *file_priv);
    412 extern int i915_driver_device_is_agp(struct drm_device * dev);
    413 extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
    414 			      unsigned long arg);
    415 extern int i915_emit_box(struct drm_device *dev,
    416 			 struct drm_clip_rect __user *boxes,
    417 			 int i, int DR1, int DR4);
    418 
    419 /* i915_irq.c */
    420 extern int i915_irq_emit(struct drm_device *dev, void *data,
    421 			 struct drm_file *file_priv);
    422 extern int i915_irq_wait(struct drm_device *dev, void *data,
    423 			 struct drm_file *file_priv);
    424 void i915_user_irq_get(struct drm_device *dev);
    425 void i915_user_irq_put(struct drm_device *dev);
    426 
    427 extern irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS);
    428 extern void i915_driver_irq_preinstall(struct drm_device * dev);
    429 extern int i915_driver_irq_postinstall(struct drm_device *dev);
    430 extern void i915_driver_irq_uninstall(struct drm_device * dev);
    431 extern int i915_vblank_pipe_set(struct drm_device *dev, void *data,
    432 				struct drm_file *file_priv);
    433 extern int i915_vblank_pipe_get(struct drm_device *dev, void *data,
    434 				struct drm_file *file_priv);
    435 extern int i915_enable_vblank(struct drm_device *dev, unsigned int crtc);
    436 extern void i915_disable_vblank(struct drm_device *dev, unsigned int crtc);
    437 extern u32 i915_get_vblank_counter(struct drm_device *dev, unsigned int crtc);
    438 extern u32 gm45_get_vblank_counter(struct drm_device *dev, unsigned int crtc);
    439 extern int i915_vblank_swap(struct drm_device *dev, void *data,
    440 			    struct drm_file *file_priv);
    441 
    442 void
    443 i915_enable_pipestat(drm_i915_private_t *dev_priv, unsigned int pipe, u32 mask);
    444 
    445 void
    446 i915_disable_pipestat(drm_i915_private_t *dev_priv, unsigned int pipe, u32 mask);
    447 
    448 
    449 /* i915_mem.c */
    450 extern int i915_mem_alloc(struct drm_device *dev, void *data,
    451 			  struct drm_file *file_priv);
    452 extern int i915_mem_free(struct drm_device *dev, void *data,
    453 			 struct drm_file *file_priv);
    454 extern int i915_mem_init_heap(struct drm_device *dev, void *data,
    455 			      struct drm_file *file_priv);
    456 extern int i915_mem_destroy_heap(struct drm_device *dev, void *data,
    457 				 struct drm_file *file_priv);
    458 extern void i915_mem_takedown(struct mem_block **heap);
    459 extern void i915_mem_release(struct drm_device * dev,
    460 			     struct drm_file *file_priv, struct mem_block *heap);
    461 #ifdef I915_HAVE_GEM
    462 /* i915_gem.c */
    463 int i915_gem_init_ioctl(struct drm_device *dev, void *data,
    464 			struct drm_file *file_priv);
    465 int i915_gem_create_ioctl(struct drm_device *dev, void *data,
    466 			  struct drm_file *file_priv);
    467 int i915_gem_pread_ioctl(struct drm_device *dev, void *data,
    468 			 struct drm_file *file_priv);
    469 int i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
    470 			  struct drm_file *file_priv);
    471 int i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
    472 			struct drm_file *file_priv);
    473 int i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
    474 			      struct drm_file *file_priv);
    475 int i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
    476 			     struct drm_file *file_priv);
    477 int i915_gem_execbuffer(struct drm_device *dev, void *data,
    478 			struct drm_file *file_priv);
    479 int i915_gem_pin_ioctl(struct drm_device *dev, void *data,
    480 		       struct drm_file *file_priv);
    481 int i915_gem_unpin_ioctl(struct drm_device *dev, void *data,
    482 			 struct drm_file *file_priv);
    483 int i915_gem_busy_ioctl(struct drm_device *dev, void *data,
    484 			struct drm_file *file_priv);
    485 int i915_gem_throttle_ioctl(struct drm_device *dev, void *data,
    486 			    struct drm_file *file_priv);
    487 int i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
    488 			   struct drm_file *file_priv);
    489 int i915_gem_leavevt_ioctl(struct drm_device *dev, void *data,
    490 			   struct drm_file *file_priv);
    491 int i915_gem_set_tiling(struct drm_device *dev, void *data,
    492 			struct drm_file *file_priv);
    493 int i915_gem_get_tiling(struct drm_device *dev, void *data,
    494 			struct drm_file *file_priv);
    495 void i915_gem_load(struct drm_device *dev);
    496 int i915_gem_proc_init(struct drm_minor *minor);
    497 void i915_gem_proc_cleanup(struct drm_minor *minor);
    498 int i915_gem_init_object(struct drm_gem_object *obj);
    499 void i915_gem_free_object(struct drm_gem_object *obj);
    500 int i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment);
    501 void i915_gem_object_unpin(struct drm_gem_object *obj);
    502 void i915_gem_lastclose(struct drm_device *dev);
    503 uint32_t i915_get_gem_seqno(struct drm_device *dev);
    504 void i915_gem_retire_requests(struct drm_device *dev);
    505 void i915_gem_retire_work_handler(struct work_struct *work);
    506 void i915_gem_clflush_object(struct drm_gem_object *obj);
    507 
    508 /* i915_gem_tiling.c */
    509 void i915_gem_detect_bit_6_swizzle(struct drm_device *dev);
    510 
    511 /* i915_gem_debug.c */
    512 void i915_gem_dump_object(struct drm_gem_object *obj, int len,
    513 			  const char *where, uint32_t mark);
    514 #if WATCH_INACTIVE
    515 void i915_verify_inactive(struct drm_device *dev, char *file, int line);
    516 #else
    517 #define i915_verify_inactive(dev, file, line)
    518 #endif
    519 void i915_gem_object_check_coherency(struct drm_gem_object *obj, int handle);
    520 void i915_gem_dump_object(struct drm_gem_object *obj, int len,
    521 			  const char *where, uint32_t mark);
    522 void i915_dump_lru(struct drm_device *dev, const char *where);
    523 #endif /* I915_HAVE_GEM */
    524 
    525 /* i915_suspend.c */
    526 extern int i915_save_state(struct drm_device *dev);
    527 extern int i915_restore_state(struct drm_device *dev);
    528 
    529 /* i915_opregion.c */
    530 extern int intel_opregion_init(struct drm_device *dev);
    531 extern void intel_opregion_free(struct drm_device *dev);
    532 extern void opregion_asle_intr(struct drm_device *dev);
    533 extern void opregion_enable_asle(struct drm_device *dev);
    534 
    535 /**
    536  * Lock test for when it's just for synchronization of ring access.
    537  *
    538  * In that case, we don't need to do it when GEM is initialized as nobody else
    539  * has access to the ring.
    540  */
    541 #define RING_LOCK_TEST_WITH_RETURN(dev, file_priv) do {			\
    542 	if (((drm_i915_private_t *)dev->dev_private)->ring.ring_obj == NULL) \
    543 		LOCK_TEST_WITH_RETURN(dev, file_priv);			\
    544 } while (0)
    545 
    546 #define I915_READ(reg)		DRM_READ32(dev_priv->mmio_map, (reg))
    547 #define I915_WRITE(reg,val)	DRM_WRITE32(dev_priv->mmio_map, (reg), (val))
    548 #define I915_READ16(reg)	DRM_READ16(dev_priv->mmio_map, (reg))
    549 #define I915_WRITE16(reg,val)	DRM_WRITE16(dev_priv->mmio_map, (reg), (val))
    550 #define I915_READ8(reg)		DRM_READ8(dev_priv->mmio_map, (reg))
    551 #define I915_WRITE8(reg,val)	DRM_WRITE8(dev_priv->mmio_map, (reg), (val))
    552 
    553 #define I915_VERBOSE 0
    554 
    555 #define RING_LOCALS	unsigned int outring, ringmask, outcount; \
    556                         volatile char *virt;
    557 
    558 #define BEGIN_LP_RING(n) do {				\
    559 	if (I915_VERBOSE)				\
    560 		DRM_DEBUG("BEGIN_LP_RING(%d)\n", (n));	\
    561 	if (dev_priv->ring.space < (n)*4)		\
    562 		i915_wait_ring(dev, (n)*4, __func__);		\
    563 	outcount = 0;					\
    564 	outring = dev_priv->ring.tail;			\
    565 	ringmask = dev_priv->ring.tail_mask;		\
    566 	virt = dev_priv->ring.virtual_start;		\
    567 } while (0)
    568 
    569 #define OUT_RING(n) do {					\
    570 	if (I915_VERBOSE) DRM_DEBUG("   OUT_RING %x\n", (int)(n));	\
    571 	*(volatile unsigned int *)(virt + outring) = (n);	\
    572         outcount++;						\
    573 	outring += 4;						\
    574 	outring &= ringmask;					\
    575 } while (0)
    576 
    577 #define ADVANCE_LP_RING() do {						\
    578 	if (I915_VERBOSE) DRM_DEBUG("ADVANCE_LP_RING %x\n", outring);	\
    579 	dev_priv->ring.tail = outring;					\
    580 	dev_priv->ring.space -= outcount * 4;				\
    581 	I915_WRITE(PRB0_TAIL, outring);			\
    582 } while(0)
    583 
    584 /**
    585  * Reads a dword out of the status page, which is written to from the command
    586  * queue by automatic updates, MI_REPORT_HEAD, MI_STORE_DATA_INDEX, or
    587  * MI_STORE_DATA_IMM.
    588  *
    589  * The following dwords have a reserved meaning:
    590  * 0x00: ISR copy, updated when an ISR bit not set in the HWSTAM changes.
    591  * 0x04: ring 0 head pointer
    592  * 0x05: ring 1 head pointer (915-class)
    593  * 0x06: ring 2 head pointer (915-class)
    594  * 0x10-0x1b: Context status DWords (GM45)
    595  * 0x1f: Last written status offset. (GM45)
    596  *
    597  * The area from dword 0x20 to 0x3ff is available for driver usage.
    598  */
    599 #define READ_HWSP(dev_priv, reg)  (((volatile u32*)(dev_priv->hw_status_page))[reg])
    600 #define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX)
    601 #define I915_GEM_HWS_INDEX		0x20
    602 #define I915_BREADCRUMB_INDEX		0x21
    603 
    604 extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
    605 
    606 #define IS_I830(dev) ((dev)->pci_device == 0x3577)
    607 #define IS_845G(dev) ((dev)->pci_device == 0x2562)
    608 #define IS_I85X(dev) ((dev)->pci_device == 0x3582)
    609 #define IS_I855(dev) ((dev)->pci_device == 0x3582)
    610 #define IS_I865G(dev) ((dev)->pci_device == 0x2572)
    611 
    612 #define IS_I915G(dev) ((dev)->pci_device == 0x2582 || (dev)->pci_device == 0x258a)
    613 #define IS_I915GM(dev) ((dev)->pci_device == 0x2592)
    614 #define IS_I945G(dev) ((dev)->pci_device == 0x2772)
    615 #define IS_I945GM(dev) ((dev)->pci_device == 0x27A2 ||\
    616 		        (dev)->pci_device == 0x27AE)
    617 #define IS_I965G(dev) ((dev)->pci_device == 0x2972 || \
    618 		       (dev)->pci_device == 0x2982 || \
    619 		       (dev)->pci_device == 0x2992 || \
    620 		       (dev)->pci_device == 0x29A2 || \
    621 		       (dev)->pci_device == 0x2A02 || \
    622 		       (dev)->pci_device == 0x2A12 || \
    623 		       (dev)->pci_device == 0x2A42 || \
    624 		       (dev)->pci_device == 0x2E02 || \
    625 		       (dev)->pci_device == 0x2E12 || \
    626 		       (dev)->pci_device == 0x2E22)
    627 
    628 #define IS_I965GM(dev) ((dev)->pci_device == 0x2A02)
    629 
    630 #define IS_GM45(dev) ((dev)->pci_device == 0x2A42)
    631 
    632 #define IS_G4X(dev) ((dev)->pci_device == 0x2E02 || \
    633 		     (dev)->pci_device == 0x2E12 || \
    634 		     (dev)->pci_device == 0x2E22)
    635 
    636 #define IS_IGDG(dev) ((dev)->pci_device == 0xA001)
    637 #define IS_IGDGM(dev) ((dev)->pci_device == 0xA011)
    638 #define IS_IGD(dev) (IS_IGDG(dev) || IS_IGDGM(dev))
    639 
    640 #define IS_G33(dev)    ((dev)->pci_device == 0x29C2 ||	\
    641 			(dev)->pci_device == 0x29B2 ||	\
    642 			(dev)->pci_device == 0x29D2 ||	\
    643 			IS_IGD(dev))
    644 
    645 #define IS_I9XX(dev) (IS_I915G(dev) || IS_I915GM(dev) || IS_I945G(dev) || \
    646 		      IS_I945GM(dev) || IS_I965G(dev) || IS_G33(dev))
    647 
    648 #define IS_MOBILE(dev) (IS_I830(dev) || IS_I85X(dev) || IS_I915GM(dev) || \
    649 			IS_I945GM(dev) || IS_I965GM(dev) || IS_GM45(dev) || \
    650 			IS_IGD(dev))
    651 
    652 #define I915_NEED_GFX_HWS(dev) (IS_G33(dev) || IS_GM45(dev) || IS_G4X(dev))
    653 
    654 #define PRIMARY_RINGBUFFER_SIZE         (128*1024)
    655 
    656 #endif
    657