1 /* i915_drv.h -- Private header for the I915 driver -*- linux-c -*-
5 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
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.
34 #include <linux/io-mapping.h>
36 /* General customization:
39 #define DRIVER_AUTHOR "Tungsten Graphics, Inc."
41 #define DRIVER_NAME "i915"
42 #define DRIVER_DESC "Intel Graphics"
43 #define DRIVER_DATE "20080730"
50 #define I915_NUM_PIPE 2
55 * 1.2: Add Power Management
56 * 1.3: Add vblank support
57 * 1.4: Fix cmdbuffer path, add heap destroy
58 * 1.5: Add vblank pipe configuration
59 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
60 * - Support vertical blank on secondary display pipe
62 #define DRIVER_MAJOR 1
63 #define DRIVER_MINOR 6
64 #define DRIVER_PATCHLEVEL 0
66 #define WATCH_COHERENCY 0
71 #define WATCH_INACTIVE 0
72 #define WATCH_PWRITE 0
74 typedef struct _drm_i915_ring_buffer
{
82 struct drm_gem_object
*ring_obj
;
83 } drm_i915_ring_buffer_t
;
86 struct mem_block
*next
;
87 struct mem_block
*prev
;
90 struct drm_file
*file_priv
; /* NULL: free, -1: heap, other: real files */
93 struct opregion_header
;
95 struct opregion_swsci
;
98 struct intel_opregion
{
99 struct opregion_header
*header
;
100 struct opregion_acpi
*acpi
;
101 struct opregion_swsci
*swsci
;
102 struct opregion_asle
*asle
;
106 typedef struct drm_i915_private
{
107 struct drm_device
*dev
;
110 drm_local_map_t
*sarea
;
112 drm_i915_sarea_t
*sarea_priv
;
113 drm_i915_ring_buffer_t ring
;
115 drm_dma_handle_t
*status_page_dmah
;
116 void *hw_status_page
;
117 dma_addr_t dma_status_page
;
119 unsigned int status_gfx_addr
;
120 drm_local_map_t hws_map
;
121 struct drm_gem_object
*hws_obj
;
129 wait_queue_head_t irq_queue
;
130 atomic_t irq_received
;
131 /** Protects user_irq_refcount and irq_mask_reg */
132 spinlock_t user_irq_lock
;
133 /** Refcount for i915_user_irq_get() versus i915_user_irq_put(). */
134 int user_irq_refcount
;
135 /** Cached value of IMR to avoid reads in updating the bitfield */
139 int tex_lru_log_granularity
;
140 int allow_batchbuffer
;
141 struct mem_block
*agp_heap
;
142 unsigned int sr01
, adpa
, ppcr
, dvob
, dvoc
, lvds
;
145 struct intel_opregion opregion
;
152 u32 saveRENDERSTANDBY
;
176 u32 savePFIT_PGM_RATIOS
;
178 u32 saveBLC_PWM_CTL2
;
203 u32 savePP_ON_DELAYS
;
204 u32 savePP_OFF_DELAYS
;
212 u32 savePFIT_CONTROL
;
213 u32 save_palette_a
[256];
214 u32 save_palette_b
[256];
215 u32 saveFBC_CFB_BASE
;
218 u32 saveFBC_CONTROL2
;
222 u32 saveCACHE_MODE_0
;
225 u32 saveMI_ARB_STATE
;
235 u8 saveDACDATA
[256*3]; /* 256 3-byte colors */
239 struct drm_mm gtt_space
;
241 struct io_mapping
*gtt_mapping
;
244 * List of objects currently involved in rendering from the
247 * Includes buffers having the contents of their GPU caches
248 * flushed, not necessarily primitives. last_rendering_seqno
249 * represents when the rendering involved will be completed.
251 * A reference is held on the buffer while on this list.
253 struct list_head active_list
;
256 * List of objects which are not in the ringbuffer but which
257 * still have a write_domain which needs to be flushed before
260 * last_rendering_seqno is 0 while an object is in this list.
262 * A reference is held on the buffer while on this list.
264 struct list_head flushing_list
;
267 * LRU list of objects which are not in the ringbuffer and
268 * are ready to unbind, but are still in the GTT.
270 * last_rendering_seqno is 0 while an object is in this list.
272 * A reference is not held on the buffer while on this list,
273 * as merely being GTT-bound shouldn't prevent its being
274 * freed, and we'll pull it off the list in the free path.
276 struct list_head inactive_list
;
279 * List of breadcrumbs associated with GPU requests currently
282 struct list_head request_list
;
285 * We leave the user IRQ off as much as possible,
286 * but this means that requests will finish and never
287 * be retired once the system goes idle. Set a timer to
288 * fire periodically while the ring is running. When it
289 * fires, go retire requests.
291 struct delayed_work retire_work
;
293 uint32_t next_gem_seqno
;
296 * Waiting sequence number, if any
298 uint32_t waiting_gem_seqno
;
301 * Last seq seen at irq time
303 uint32_t irq_gem_seqno
;
306 * Flag if the X Server, and thus DRM, is not currently in
307 * control of the device.
309 * This is set between LeaveVT and EnterVT. It needs to be
310 * replaced with a semaphore. It also needs to be
311 * transitioned away from for kernel modesetting.
316 * Flag if the hardware appears to be wedged.
318 * This is set when attempts to idle the device timeout.
319 * It prevents command submission from occuring and makes
320 * every pending request fail
324 /** Bit 6 swizzling required for X tiling */
325 uint32_t bit_6_swizzle_x
;
326 /** Bit 6 swizzling required for Y tiling */
327 uint32_t bit_6_swizzle_y
;
329 } drm_i915_private_t
;
331 /** driver private structure attached to each drm_gem_object */
332 struct drm_i915_gem_object
{
333 struct drm_gem_object
*obj
;
335 /** Current space allocated to this object in the GTT, if any. */
336 struct drm_mm_node
*gtt_space
;
338 /** This object's place on the active/flushing/inactive lists */
339 struct list_head list
;
342 * This is set if the object is on the active or flushing lists
343 * (has pending rendering), and is not set if it's on inactive (ready
349 * This is set if the object has been written to since last bound
354 /** AGP memory structure for our GTT binding. */
355 DRM_AGP_MEM
*agp_mem
;
357 struct page
**page_list
;
360 * Current offset of the object in GTT space.
362 * This is the same as gtt_space->start
366 /** Boolean whether this object has a valid gtt offset. */
369 /** How many users have pinned this object in GTT space */
372 /** Breadcrumb of last rendering to the buffer. */
373 uint32_t last_rendering_seqno
;
375 /** Current tiling mode for the object. */
376 uint32_t tiling_mode
;
378 /** AGP mapping type (AGP_USER_MEMORY or AGP_USER_CACHED_MEMORY */
382 * If present, while GEM_DOMAIN_CPU is in the read domain this array
383 * flags which individual pages are valid.
385 uint8_t *page_cpu_valid
;
389 * Request queue structure.
391 * The request queue allows us to note sequence numbers that have been emitted
392 * and may be associated with active buffers to be retired.
394 * By keeping this list, we can avoid having to do questionable
395 * sequence-number comparisons on buffer last_rendering_seqnos, and associate
396 * an emission time with seqnos for tracking how far ahead of the GPU we are.
398 struct drm_i915_gem_request
{
399 /** GEM sequence number associated with this request. */
402 /** Time at which this request was emitted, in jiffies. */
403 unsigned long emitted_jiffies
;
405 struct list_head list
;
408 struct drm_i915_file_private
{
410 uint32_t last_gem_seqno
;
411 uint32_t last_gem_throttle_seqno
;
415 extern struct drm_ioctl_desc i915_ioctls
[];
416 extern int i915_max_ioctl
;
419 extern void i915_kernel_lost_context(struct drm_device
* dev
);
420 extern int i915_driver_load(struct drm_device
*, unsigned long flags
);
421 extern int i915_driver_unload(struct drm_device
*);
422 extern int i915_driver_open(struct drm_device
*dev
, struct drm_file
*file_priv
);
423 extern void i915_driver_lastclose(struct drm_device
* dev
);
424 extern void i915_driver_preclose(struct drm_device
*dev
,
425 struct drm_file
*file_priv
);
426 extern void i915_driver_postclose(struct drm_device
*dev
,
427 struct drm_file
*file_priv
);
428 extern int i915_driver_device_is_agp(struct drm_device
* dev
);
429 extern long i915_compat_ioctl(struct file
*filp
, unsigned int cmd
,
431 extern int i915_emit_box(struct drm_device
*dev
,
432 struct drm_clip_rect __user
*boxes
,
433 int i
, int DR1
, int DR4
);
436 extern int i915_irq_emit(struct drm_device
*dev
, void *data
,
437 struct drm_file
*file_priv
);
438 extern int i915_irq_wait(struct drm_device
*dev
, void *data
,
439 struct drm_file
*file_priv
);
440 void i915_user_irq_get(struct drm_device
*dev
);
441 void i915_user_irq_put(struct drm_device
*dev
);
443 extern irqreturn_t
i915_driver_irq_handler(DRM_IRQ_ARGS
);
444 extern void i915_driver_irq_preinstall(struct drm_device
* dev
);
445 extern int i915_driver_irq_postinstall(struct drm_device
*dev
);
446 extern void i915_driver_irq_uninstall(struct drm_device
* dev
);
447 extern int i915_vblank_pipe_set(struct drm_device
*dev
, void *data
,
448 struct drm_file
*file_priv
);
449 extern int i915_vblank_pipe_get(struct drm_device
*dev
, void *data
,
450 struct drm_file
*file_priv
);
451 extern int i915_enable_vblank(struct drm_device
*dev
, int crtc
);
452 extern void i915_disable_vblank(struct drm_device
*dev
, int crtc
);
453 extern u32
i915_get_vblank_counter(struct drm_device
*dev
, int crtc
);
454 extern int i915_vblank_swap(struct drm_device
*dev
, void *data
,
455 struct drm_file
*file_priv
);
456 extern void i915_enable_irq(drm_i915_private_t
*dev_priv
, u32 mask
);
459 i915_enable_pipestat(drm_i915_private_t
*dev_priv
, int pipe
, u32 mask
);
462 i915_disable_pipestat(drm_i915_private_t
*dev_priv
, int pipe
, u32 mask
);
466 extern int i915_mem_alloc(struct drm_device
*dev
, void *data
,
467 struct drm_file
*file_priv
);
468 extern int i915_mem_free(struct drm_device
*dev
, void *data
,
469 struct drm_file
*file_priv
);
470 extern int i915_mem_init_heap(struct drm_device
*dev
, void *data
,
471 struct drm_file
*file_priv
);
472 extern int i915_mem_destroy_heap(struct drm_device
*dev
, void *data
,
473 struct drm_file
*file_priv
);
474 extern void i915_mem_takedown(struct mem_block
**heap
);
475 extern void i915_mem_release(struct drm_device
* dev
,
476 struct drm_file
*file_priv
, struct mem_block
*heap
);
478 int i915_gem_init_ioctl(struct drm_device
*dev
, void *data
,
479 struct drm_file
*file_priv
);
480 int i915_gem_create_ioctl(struct drm_device
*dev
, void *data
,
481 struct drm_file
*file_priv
);
482 int i915_gem_pread_ioctl(struct drm_device
*dev
, void *data
,
483 struct drm_file
*file_priv
);
484 int i915_gem_pwrite_ioctl(struct drm_device
*dev
, void *data
,
485 struct drm_file
*file_priv
);
486 int i915_gem_mmap_ioctl(struct drm_device
*dev
, void *data
,
487 struct drm_file
*file_priv
);
488 int i915_gem_set_domain_ioctl(struct drm_device
*dev
, void *data
,
489 struct drm_file
*file_priv
);
490 int i915_gem_sw_finish_ioctl(struct drm_device
*dev
, void *data
,
491 struct drm_file
*file_priv
);
492 int i915_gem_execbuffer(struct drm_device
*dev
, void *data
,
493 struct drm_file
*file_priv
);
494 int i915_gem_pin_ioctl(struct drm_device
*dev
, void *data
,
495 struct drm_file
*file_priv
);
496 int i915_gem_unpin_ioctl(struct drm_device
*dev
, void *data
,
497 struct drm_file
*file_priv
);
498 int i915_gem_busy_ioctl(struct drm_device
*dev
, void *data
,
499 struct drm_file
*file_priv
);
500 int i915_gem_throttle_ioctl(struct drm_device
*dev
, void *data
,
501 struct drm_file
*file_priv
);
502 int i915_gem_entervt_ioctl(struct drm_device
*dev
, void *data
,
503 struct drm_file
*file_priv
);
504 int i915_gem_leavevt_ioctl(struct drm_device
*dev
, void *data
,
505 struct drm_file
*file_priv
);
506 int i915_gem_set_tiling(struct drm_device
*dev
, void *data
,
507 struct drm_file
*file_priv
);
508 int i915_gem_get_tiling(struct drm_device
*dev
, void *data
,
509 struct drm_file
*file_priv
);
510 int i915_gem_get_aperture_ioctl(struct drm_device
*dev
, void *data
,
511 struct drm_file
*file_priv
);
512 void i915_gem_load(struct drm_device
*dev
);
513 int i915_gem_proc_init(struct drm_minor
*minor
);
514 void i915_gem_proc_cleanup(struct drm_minor
*minor
);
515 int i915_gem_init_object(struct drm_gem_object
*obj
);
516 void i915_gem_free_object(struct drm_gem_object
*obj
);
517 int i915_gem_object_pin(struct drm_gem_object
*obj
, uint32_t alignment
);
518 void i915_gem_object_unpin(struct drm_gem_object
*obj
);
519 void i915_gem_lastclose(struct drm_device
*dev
);
520 uint32_t i915_get_gem_seqno(struct drm_device
*dev
);
521 void i915_gem_retire_requests(struct drm_device
*dev
);
522 void i915_gem_retire_work_handler(struct work_struct
*work
);
523 void i915_gem_clflush_object(struct drm_gem_object
*obj
);
525 /* i915_gem_tiling.c */
526 void i915_gem_detect_bit_6_swizzle(struct drm_device
*dev
);
528 /* i915_gem_debug.c */
529 void i915_gem_dump_object(struct drm_gem_object
*obj
, int len
,
530 const char *where
, uint32_t mark
);
532 void i915_verify_inactive(struct drm_device
*dev
, char *file
, int line
);
534 #define i915_verify_inactive(dev, file, line)
536 void i915_gem_object_check_coherency(struct drm_gem_object
*obj
, int handle
);
537 void i915_gem_dump_object(struct drm_gem_object
*obj
, int len
,
538 const char *where
, uint32_t mark
);
539 void i915_dump_lru(struct drm_device
*dev
, const char *where
);
542 extern int i915_save_state(struct drm_device
*dev
);
543 extern int i915_restore_state(struct drm_device
*dev
);
546 extern int i915_save_state(struct drm_device
*dev
);
547 extern int i915_restore_state(struct drm_device
*dev
);
550 /* i915_opregion.c */
551 extern int intel_opregion_init(struct drm_device
*dev
);
552 extern void intel_opregion_free(struct drm_device
*dev
);
553 extern void opregion_asle_intr(struct drm_device
*dev
);
554 extern void opregion_enable_asle(struct drm_device
*dev
);
556 static inline int intel_opregion_init(struct drm_device
*dev
) { return 0; }
557 static inline void intel_opregion_free(struct drm_device
*dev
) { return; }
558 static inline void opregion_asle_intr(struct drm_device
*dev
) { return; }
559 static inline void opregion_enable_asle(struct drm_device
*dev
) { return; }
563 * Lock test for when it's just for synchronization of ring access.
565 * In that case, we don't need to do it when GEM is initialized as nobody else
566 * has access to the ring.
568 #define RING_LOCK_TEST_WITH_RETURN(dev, file_priv) do { \
569 if (((drm_i915_private_t *)dev->dev_private)->ring.ring_obj == NULL) \
570 LOCK_TEST_WITH_RETURN(dev, file_priv); \
573 #define I915_READ(reg) readl(dev_priv->regs + (reg))
574 #define I915_WRITE(reg, val) writel(val, dev_priv->regs + (reg))
575 #define I915_READ16(reg) readw(dev_priv->regs + (reg))
576 #define I915_WRITE16(reg, val) writel(val, dev_priv->regs + (reg))
577 #define I915_READ8(reg) readb(dev_priv->regs + (reg))
578 #define I915_WRITE8(reg, val) writeb(val, dev_priv->regs + (reg))
580 #define I915_VERBOSE 0
582 #define RING_LOCALS unsigned int outring, ringmask, outcount; \
585 #define BEGIN_LP_RING(n) do { \
587 DRM_DEBUG("BEGIN_LP_RING(%d)\n", (n)); \
588 if (dev_priv->ring.space < (n)*4) \
589 i915_wait_ring(dev, (n)*4, __func__); \
591 outring = dev_priv->ring.tail; \
592 ringmask = dev_priv->ring.tail_mask; \
593 virt = dev_priv->ring.virtual_start; \
596 #define OUT_RING(n) do { \
597 if (I915_VERBOSE) DRM_DEBUG(" OUT_RING %x\n", (int)(n)); \
598 *(volatile unsigned int *)(virt + outring) = (n); \
601 outring &= ringmask; \
604 #define ADVANCE_LP_RING() do { \
605 if (I915_VERBOSE) DRM_DEBUG("ADVANCE_LP_RING %x\n", outring); \
606 dev_priv->ring.tail = outring; \
607 dev_priv->ring.space -= outcount * 4; \
608 I915_WRITE(PRB0_TAIL, outring); \
612 * Reads a dword out of the status page, which is written to from the command
613 * queue by automatic updates, MI_REPORT_HEAD, MI_STORE_DATA_INDEX, or
616 * The following dwords have a reserved meaning:
617 * 0x00: ISR copy, updated when an ISR bit not set in the HWSTAM changes.
618 * 0x04: ring 0 head pointer
619 * 0x05: ring 1 head pointer (915-class)
620 * 0x06: ring 2 head pointer (915-class)
621 * 0x10-0x1b: Context status DWords (GM45)
622 * 0x1f: Last written status offset. (GM45)
624 * The area from dword 0x20 to 0x3ff is available for driver usage.
626 #define READ_HWSP(dev_priv, reg) (((volatile u32*)(dev_priv->hw_status_page))[reg])
627 #define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX)
628 #define I915_GEM_HWS_INDEX 0x20
629 #define I915_BREADCRUMB_INDEX 0x21
631 extern int i915_wait_ring(struct drm_device
* dev
, int n
, const char *caller
);
633 #define IS_I830(dev) ((dev)->pci_device == 0x3577)
634 #define IS_845G(dev) ((dev)->pci_device == 0x2562)
635 #define IS_I85X(dev) ((dev)->pci_device == 0x3582)
636 #define IS_I855(dev) ((dev)->pci_device == 0x3582)
637 #define IS_I865G(dev) ((dev)->pci_device == 0x2572)
639 #define IS_I915G(dev) ((dev)->pci_device == 0x2582 || (dev)->pci_device == 0x258a)
640 #define IS_I915GM(dev) ((dev)->pci_device == 0x2592)
641 #define IS_I945G(dev) ((dev)->pci_device == 0x2772)
642 #define IS_I945GM(dev) ((dev)->pci_device == 0x27A2 ||\
643 (dev)->pci_device == 0x27AE)
644 #define IS_I965G(dev) ((dev)->pci_device == 0x2972 || \
645 (dev)->pci_device == 0x2982 || \
646 (dev)->pci_device == 0x2992 || \
647 (dev)->pci_device == 0x29A2 || \
648 (dev)->pci_device == 0x2A02 || \
649 (dev)->pci_device == 0x2A12 || \
650 (dev)->pci_device == 0x2A42 || \
651 (dev)->pci_device == 0x2E02 || \
652 (dev)->pci_device == 0x2E12 || \
653 (dev)->pci_device == 0x2E22)
655 #define IS_I965GM(dev) ((dev)->pci_device == 0x2A02)
657 #define IS_GM45(dev) ((dev)->pci_device == 0x2A42)
659 #define IS_G4X(dev) ((dev)->pci_device == 0x2E02 || \
660 (dev)->pci_device == 0x2E12 || \
661 (dev)->pci_device == 0x2E22)
663 #define IS_G33(dev) ((dev)->pci_device == 0x29C2 || \
664 (dev)->pci_device == 0x29B2 || \
665 (dev)->pci_device == 0x29D2)
667 #define IS_I9XX(dev) (IS_I915G(dev) || IS_I915GM(dev) || IS_I945G(dev) || \
668 IS_I945GM(dev) || IS_I965G(dev) || IS_G33(dev))
670 #define IS_MOBILE(dev) (IS_I830(dev) || IS_I85X(dev) || IS_I915GM(dev) || \
671 IS_I945GM(dev) || IS_I965GM(dev) || IS_GM45(dev))
673 #define I915_NEED_GFX_HWS(dev) (IS_G33(dev) || IS_GM45(dev) || IS_G4X(dev))
675 #define PRIMARY_RINGBUFFER_SIZE (128*1024)