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 "intel_bios.h"
35 #include "intel_ringbuffer.h"
36 #include <linux/io-mapping.h>
37 #include <linux/i2c.h>
38 #include <linux/i2c-algo-bit.h>
39 #include <drm/intel-gtt.h>
40 #include <linux/backlight.h>
41 #include <linux/intel-iommu.h>
42 #include <linux/kref.h>
44 /* General customization:
47 #define DRIVER_AUTHOR "Tungsten Graphics, Inc."
49 #define DRIVER_NAME "i915"
50 #define DRIVER_DESC "Intel Graphics"
51 #define DRIVER_DATE "20080730"
59 #define pipe_name(p) ((p) + 'A')
66 #define plane_name(p) ((p) + 'A')
76 #define port_name(p) ((p) + 'A')
78 #define I915_GEM_GPU_DOMAINS (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
80 #define for_each_pipe(p) for ((p) = 0; (p) < dev_priv->num_pipe; (p)++)
82 struct intel_pch_pll {
83 int refcount; /* count of number of CRTCs sharing this PLL */
84 int active; /* count of number of active CRTCs (i.e. DPMS on) */
85 bool on; /* is the PLL actually active? Disabled during modeset */
90 #define I915_NUM_PLLS 2
95 * 1.2: Add Power Management
96 * 1.3: Add vblank support
97 * 1.4: Fix cmdbuffer path, add heap destroy
98 * 1.5: Add vblank pipe configuration
99 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
100 * - Support vertical blank on secondary display pipe
102 #define DRIVER_MAJOR 1
103 #define DRIVER_MINOR 6
104 #define DRIVER_PATCHLEVEL 0
106 #define WATCH_COHERENCY 0
107 #define WATCH_LISTS 0
109 #define I915_GEM_PHYS_CURSOR_0 1
110 #define I915_GEM_PHYS_CURSOR_1 2
111 #define I915_GEM_PHYS_OVERLAY_REGS 3
112 #define I915_MAX_PHYS_OBJECT (I915_GEM_PHYS_OVERLAY_REGS)
114 struct drm_i915_gem_phys_object {
116 struct page **page_list;
117 drm_dma_handle_t *handle;
118 struct drm_i915_gem_object *cur_obj;
122 struct mem_block *next;
123 struct mem_block *prev;
126 struct drm_file *file_priv; /* NULL: free, -1: heap, other: real files */
129 struct opregion_header;
130 struct opregion_acpi;
131 struct opregion_swsci;
132 struct opregion_asle;
133 struct drm_i915_private;
135 struct intel_opregion {
136 struct opregion_header __iomem *header;
137 struct opregion_acpi __iomem *acpi;
138 struct opregion_swsci __iomem *swsci;
139 struct opregion_asle __iomem *asle;
141 u32 __iomem *lid_state;
143 #define OPREGION_SIZE (8*1024)
145 struct intel_overlay;
146 struct intel_overlay_error_state;
148 struct drm_i915_master_private {
149 drm_local_map_t *sarea;
150 struct _drm_i915_sarea *sarea_priv;
152 #define I915_FENCE_REG_NONE -1
153 #define I915_MAX_NUM_FENCES 16
154 /* 16 fences + sign bit for FENCE_REG_NONE */
155 #define I915_MAX_NUM_FENCE_BITS 5
157 struct drm_i915_fence_reg {
158 struct list_head lru_list;
159 struct drm_i915_gem_object *obj;
163 struct sdvo_device_mapping {
172 struct intel_display_error_state;
174 struct drm_i915_error_state {
180 bool waiting[I915_NUM_RINGS];
181 u32 pipestat[I915_MAX_PIPES];
182 u32 tail[I915_NUM_RINGS];
183 u32 head[I915_NUM_RINGS];
184 u32 ipeir[I915_NUM_RINGS];
185 u32 ipehr[I915_NUM_RINGS];
186 u32 instdone[I915_NUM_RINGS];
187 u32 acthd[I915_NUM_RINGS];
188 u32 semaphore_mboxes[I915_NUM_RINGS][I915_NUM_RINGS - 1];
189 /* our own tracking of ring head and tail */
190 u32 cpu_ring_head[I915_NUM_RINGS];
191 u32 cpu_ring_tail[I915_NUM_RINGS];
192 u32 error; /* gen6+ */
193 u32 instpm[I915_NUM_RINGS];
194 u32 instps[I915_NUM_RINGS];
196 u32 seqno[I915_NUM_RINGS];
198 u32 fault_reg[I915_NUM_RINGS];
200 u32 faddr[I915_NUM_RINGS];
201 u64 fence[I915_MAX_NUM_FENCES];
203 struct drm_i915_error_ring {
204 struct drm_i915_error_object {
208 } *ringbuffer, *batchbuffer;
209 struct drm_i915_error_request {
215 } ring[I915_NUM_RINGS];
216 struct drm_i915_error_buffer {
223 s32 fence_reg:I915_MAX_NUM_FENCE_BITS;
230 } *active_bo, *pinned_bo;
231 u32 active_bo_count, pinned_bo_count;
232 struct intel_overlay_error_state *overlay;
233 struct intel_display_error_state *display;
236 struct drm_i915_display_funcs {
237 void (*dpms)(struct drm_crtc *crtc, int mode);
238 bool (*fbc_enabled)(struct drm_device *dev);
239 void (*enable_fbc)(struct drm_crtc *crtc, unsigned long interval);
240 void (*disable_fbc)(struct drm_device *dev);
241 int (*get_display_clock_speed)(struct drm_device *dev);
242 int (*get_fifo_size)(struct drm_device *dev, int plane);
243 void (*update_wm)(struct drm_device *dev);
244 void (*update_sprite_wm)(struct drm_device *dev, int pipe,
245 uint32_t sprite_width, int pixel_size);
246 void (*sanitize_pm)(struct drm_device *dev);
247 void (*update_linetime_wm)(struct drm_device *dev, int pipe,
248 struct drm_display_mode *mode);
249 int (*crtc_mode_set)(struct drm_crtc *crtc,
250 struct drm_display_mode *mode,
251 struct drm_display_mode *adjusted_mode,
253 struct drm_framebuffer *old_fb);
254 void (*off)(struct drm_crtc *crtc);
255 void (*write_eld)(struct drm_connector *connector,
256 struct drm_crtc *crtc);
257 void (*fdi_link_train)(struct drm_crtc *crtc);
258 void (*init_clock_gating)(struct drm_device *dev);
259 void (*init_pch_clock_gating)(struct drm_device *dev);
260 int (*queue_flip)(struct drm_device *dev, struct drm_crtc *crtc,
261 struct drm_framebuffer *fb,
262 struct drm_i915_gem_object *obj);
263 int (*update_plane)(struct drm_crtc *crtc, struct drm_framebuffer *fb,
265 /* clock updates for mode set */
267 /* render clock increase/decrease */
268 /* display clock increase/decrease */
269 /* pll clock increase/decrease */
272 struct drm_i915_gt_funcs {
273 void (*force_wake_get)(struct drm_i915_private *dev_priv);
274 void (*force_wake_put)(struct drm_i915_private *dev_priv);
277 struct intel_device_info {
297 u8 cursor_needs_physical:1;
299 u8 overlay_needs_physical:1;
306 #define I915_PPGTT_PD_ENTRIES 512
307 #define I915_PPGTT_PT_ENTRIES 1024
308 struct i915_hw_ppgtt {
309 unsigned num_pd_entries;
310 struct page **pt_pages;
312 dma_addr_t *pt_dma_addr;
313 dma_addr_t scratch_page_dma_addr;
317 /* This must match up with the value previously used for execbuf2.rsvd1. */
318 #define DEFAULT_CONTEXT_ID 0
319 struct i915_hw_context {
322 struct drm_i915_file_private *file_priv;
323 struct intel_ring_buffer *ring;
324 struct drm_i915_gem_object *obj;
328 FBC_NO_OUTPUT, /* no outputs enabled to compress */
329 FBC_STOLEN_TOO_SMALL, /* not enough space to hold compressed buffers */
330 FBC_UNSUPPORTED_MODE, /* interlace or doublescanned mode */
331 FBC_MODE_TOO_LARGE, /* mode too large for compression */
332 FBC_BAD_PLANE, /* fbc not supported on plane */
333 FBC_NOT_TILED, /* buffer not tiled */
334 FBC_MULTIPLE_PIPES, /* more than one pipe active */
339 PCH_IBX, /* Ibexpeak PCH */
340 PCH_CPT, /* Cougarpoint PCH */
341 PCH_LPT, /* Lynxpoint PCH */
344 #define QUIRK_PIPEA_FORCE (1<<0)
345 #define QUIRK_LVDS_SSC_DISABLE (1<<1)
346 #define QUIRK_INVERT_BRIGHTNESS (1<<2)
349 struct intel_fbc_work;
352 struct i2c_adapter adapter;
356 struct i2c_algo_bit_data bit_algo;
357 struct drm_i915_private *dev_priv;
360 typedef struct drm_i915_private {
361 struct drm_device *dev;
363 const struct intel_device_info *info;
365 int relative_constants_mode;
369 struct drm_i915_gt_funcs gt;
370 /** gt_fifo_count and the subsequent register write are synchronized
371 * with dev->struct_mutex. */
372 unsigned gt_fifo_count;
373 /** forcewake_count is protected by gt_lock */
374 unsigned forcewake_count;
375 /** gt_lock is also taken in irq contexts. */
376 struct spinlock gt_lock;
378 struct intel_gmbus gmbus[GMBUS_NUM_PORTS];
380 /** gmbus_mutex protects against concurrent usage of the single hw gmbus
381 * controller on different i2c buses. */
382 struct mutex gmbus_mutex;
385 * Base address of the gmbus and gpio block.
387 uint32_t gpio_mmio_base;
389 struct pci_dev *bridge_dev;
390 struct intel_ring_buffer ring[I915_NUM_RINGS];
393 drm_dma_handle_t *status_page_dmah;
395 struct drm_i915_gem_object *pwrctx;
396 struct drm_i915_gem_object *renderctx;
398 struct resource mch_res;
406 atomic_t irq_received;
408 /* protects the irq masks */
411 /* DPIO indirect register protection */
412 spinlock_t dpio_lock;
414 /** Cached value of IMR to avoid reads in updating the bitfield */
420 u32 hotplug_supported_mask;
421 struct work_struct hotplug_work;
423 unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds;
427 /* For hangcheck timer */
428 #define DRM_I915_HANGCHECK_PERIOD 1500 /* in ms */
429 struct timer_list hangcheck_timer;
431 uint32_t last_acthd[I915_NUM_RINGS];
432 uint32_t last_instdone;
433 uint32_t last_instdone1;
435 unsigned int stop_rings;
437 unsigned long cfb_size;
439 enum plane cfb_plane;
441 struct intel_fbc_work *fbc_work;
443 struct intel_opregion opregion;
446 struct intel_overlay *overlay;
447 bool sprite_scaling_enabled;
450 int backlight_level; /* restore backlight to this value */
451 bool backlight_enabled;
452 struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
453 struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
455 /* Feature bits from the VBIOS */
456 unsigned int int_tv_support:1;
457 unsigned int lvds_dither:1;
458 unsigned int lvds_vbt:1;
459 unsigned int int_crt_support:1;
460 unsigned int lvds_use_ssc:1;
461 unsigned int display_clock_mode:1;
463 unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
464 unsigned int lvds_val; /* used for checking LVDS channel mode */
474 struct edp_power_seq pps;
476 bool no_aux_handshake;
478 struct notifier_block lid_notifier;
481 struct drm_i915_fence_reg fence_regs[I915_MAX_NUM_FENCES]; /* assume 965 */
482 int fence_reg_start; /* 4 if userland hasn't ioctl'd us yet */
483 int num_fence_regs; /* 8 on pre-965, 16 otherwise */
485 unsigned int fsb_freq, mem_freq, is_ddr3;
487 spinlock_t error_lock;
488 /* Protected by dev->error_lock. */
489 struct drm_i915_error_state *first_error;
490 struct work_struct error_work;
491 struct completion error_completion;
492 struct workqueue_struct *wq;
494 /* Display functions */
495 struct drm_i915_display_funcs display;
497 /* PCH chipset type */
498 enum intel_pch pch_type;
500 unsigned long quirks;
525 u32 saveTRANS_HTOTAL_A;
526 u32 saveTRANS_HBLANK_A;
527 u32 saveTRANS_HSYNC_A;
528 u32 saveTRANS_VTOTAL_A;
529 u32 saveTRANS_VBLANK_A;
530 u32 saveTRANS_VSYNC_A;
538 u32 savePFIT_PGM_RATIOS;
539 u32 saveBLC_HIST_CTL;
541 u32 saveBLC_PWM_CTL2;
542 u32 saveBLC_CPU_PWM_CTL;
543 u32 saveBLC_CPU_PWM_CTL2;
556 u32 saveTRANS_HTOTAL_B;
557 u32 saveTRANS_HBLANK_B;
558 u32 saveTRANS_HSYNC_B;
559 u32 saveTRANS_VTOTAL_B;
560 u32 saveTRANS_VBLANK_B;
561 u32 saveTRANS_VSYNC_B;
575 u32 savePP_ON_DELAYS;
576 u32 savePP_OFF_DELAYS;
584 u32 savePFIT_CONTROL;
585 u32 save_palette_a[256];
586 u32 save_palette_b[256];
587 u32 saveDPFC_CB_BASE;
588 u32 saveFBC_CFB_BASE;
591 u32 saveFBC_CONTROL2;
601 u32 saveCACHE_MODE_0;
602 u32 saveMI_ARB_STATE;
613 uint64_t saveFENCE[I915_MAX_NUM_FENCES];
624 u32 savePIPEA_GMCH_DATA_M;
625 u32 savePIPEB_GMCH_DATA_M;
626 u32 savePIPEA_GMCH_DATA_N;
627 u32 savePIPEB_GMCH_DATA_N;
628 u32 savePIPEA_DP_LINK_M;
629 u32 savePIPEB_DP_LINK_M;
630 u32 savePIPEA_DP_LINK_N;
631 u32 savePIPEB_DP_LINK_N;
642 u32 savePCH_DREF_CONTROL;
643 u32 saveDISP_ARB_CTL;
644 u32 savePIPEA_DATA_M1;
645 u32 savePIPEA_DATA_N1;
646 u32 savePIPEA_LINK_M1;
647 u32 savePIPEA_LINK_N1;
648 u32 savePIPEB_DATA_M1;
649 u32 savePIPEB_DATA_N1;
650 u32 savePIPEB_LINK_M1;
651 u32 savePIPEB_LINK_N1;
652 u32 saveMCHBAR_RENDER_STANDBY;
653 u32 savePCH_PORT_HOTPLUG;
656 /** Bridge to intel-gtt-ko */
657 const struct intel_gtt *gtt;
658 /** Memory allocator for GTT stolen memory */
659 struct drm_mm stolen;
660 /** Memory allocator for GTT */
661 struct drm_mm gtt_space;
662 /** List of all objects in gtt_space. Used to restore gtt
663 * mappings on resume */
664 struct list_head gtt_list;
666 /** Usable portion of the GTT for GEM */
667 unsigned long gtt_start;
668 unsigned long gtt_mappable_end;
669 unsigned long gtt_end;
671 struct io_mapping *gtt_mapping;
672 phys_addr_t gtt_base_addr;
675 /** PPGTT used for aliasing the PPGTT with the GTT */
676 struct i915_hw_ppgtt *aliasing_ppgtt;
680 struct shrinker inactive_shrinker;
683 * List of objects currently involved in rendering.
685 * Includes buffers having the contents of their GPU caches
686 * flushed, not necessarily primitives. last_rendering_seqno
687 * represents when the rendering involved will be completed.
689 * A reference is held on the buffer while on this list.
691 struct list_head active_list;
694 * List of objects which are not in the ringbuffer but which
695 * still have a write_domain which needs to be flushed before
698 * last_rendering_seqno is 0 while an object is in this list.
700 * A reference is held on the buffer while on this list.
702 struct list_head flushing_list;
705 * LRU list of objects which are not in the ringbuffer and
706 * are ready to unbind, but are still in the GTT.
708 * last_rendering_seqno is 0 while an object is in this list.
710 * A reference is not held on the buffer while on this list,
711 * as merely being GTT-bound shouldn't prevent its being
712 * freed, and we'll pull it off the list in the free path.
714 struct list_head inactive_list;
716 /** LRU list of objects with fence regs on them. */
717 struct list_head fence_list;
720 * We leave the user IRQ off as much as possible,
721 * but this means that requests will finish and never
722 * be retired once the system goes idle. Set a timer to
723 * fire periodically while the ring is running. When it
724 * fires, go retire requests.
726 struct delayed_work retire_work;
729 * Are we in a non-interruptible section of code like
735 * Flag if the X Server, and thus DRM, is not currently in
736 * control of the device.
738 * This is set between LeaveVT and EnterVT. It needs to be
739 * replaced with a semaphore. It also needs to be
740 * transitioned away from for kernel modesetting.
745 * Flag if the hardware appears to be wedged.
747 * This is set when attempts to idle the device timeout.
748 * It prevents command submission from occurring and makes
749 * every pending request fail
753 /** Bit 6 swizzling required for X tiling */
754 uint32_t bit_6_swizzle_x;
755 /** Bit 6 swizzling required for Y tiling */
756 uint32_t bit_6_swizzle_y;
758 /* storage for physical objects */
759 struct drm_i915_gem_phys_object *phys_objs[I915_MAX_PHYS_OBJECT];
761 /* accounting, useful for userland debugging */
763 size_t mappable_gtt_total;
764 size_t object_memory;
768 /* Old dri1 support infrastructure, beware the dragons ya fools entering
771 unsigned allow_batchbuffer : 1;
772 u32 __iomem *gfx_hws_cpu_addr;
775 /* Kernel Modesetting */
777 struct sdvo_device_mapping sdvo_mappings[2];
778 /* indicate whether the LVDS_BORDER should be enabled or not */
779 unsigned int lvds_border_bits;
780 /* Panel fitter placement and size for Ironlake+ */
781 u32 pch_pf_pos, pch_pf_size;
783 struct drm_crtc *plane_to_crtc_mapping[3];
784 struct drm_crtc *pipe_to_crtc_mapping[3];
785 wait_queue_head_t pending_flip_queue;
787 struct intel_pch_pll pch_plls[I915_NUM_PLLS];
789 /* Reclocking support */
790 bool render_reclock_avail;
791 bool lvds_downclock_avail;
792 /* indicates the reduced downclock for LVDS*/
794 struct work_struct idle_work;
795 struct timer_list idle_timer;
799 struct child_device_config *child_dev;
800 struct drm_connector *int_lvds_connector;
801 struct drm_connector *int_edp_connector;
803 bool mchbar_need_disable;
805 struct work_struct rps_work;
816 unsigned long last_time1;
817 unsigned long chipset_power;
819 struct timespec last_time2;
820 unsigned long gfx_power;
824 spinlock_t *mchdev_lock;
826 enum no_fbc_reason no_fbc_reason;
828 struct drm_mm_node *compressed_fb;
829 struct drm_mm_node *compressed_llb;
831 unsigned long last_gpu_reset;
833 /* list of fbdev register on this device */
834 struct intel_fbdev *fbdev;
836 struct backlight_device *backlight;
838 struct drm_property *broadcast_rgb_property;
839 struct drm_property *force_audio_property;
841 struct work_struct parity_error_work;
842 bool hw_contexts_disabled;
843 uint32_t hw_context_size;
844 } drm_i915_private_t;
846 /* Iterate over initialised rings */
847 #define for_each_ring(ring__, dev_priv__, i__) \
848 for ((i__) = 0; (i__) < I915_NUM_RINGS; (i__)++) \
849 if (((ring__) = &(dev_priv__)->ring[(i__)]), intel_ring_initialized((ring__)))
851 enum hdmi_force_audio {
852 HDMI_AUDIO_OFF_DVI = -2, /* no aux data for HDMI-DVI converter */
853 HDMI_AUDIO_OFF, /* force turn off HDMI audio */
854 HDMI_AUDIO_AUTO, /* trust EDID */
855 HDMI_AUDIO_ON, /* force turn on HDMI audio */
858 enum i915_cache_level {
861 I915_CACHE_LLC_MLC, /* gen6+ */
864 struct drm_i915_gem_object {
865 struct drm_gem_object base;
867 /** Current space allocated to this object in the GTT, if any. */
868 struct drm_mm_node *gtt_space;
869 struct list_head gtt_list;
871 /** This object's place on the active/flushing/inactive lists */
872 struct list_head ring_list;
873 struct list_head mm_list;
874 /** This object's place on GPU write list */
875 struct list_head gpu_write_list;
876 /** This object's place in the batchbuffer or on the eviction list */
877 struct list_head exec_list;
880 * This is set if the object is on the active or flushing lists
881 * (has pending rendering), and is not set if it's on inactive (ready
884 unsigned int active:1;
887 * This is set if the object has been written to since last bound
890 unsigned int dirty:1;
893 * This is set if the object has been written to since the last
896 unsigned int pending_gpu_write:1;
899 * Fence register bits (if any) for this object. Will be set
900 * as needed when mapped into the GTT.
901 * Protected by dev->struct_mutex.
903 signed int fence_reg:I915_MAX_NUM_FENCE_BITS;
906 * Advice: are the backing pages purgeable?
911 * Current tiling mode for the object.
913 unsigned int tiling_mode:2;
915 * Whether the tiling parameters for the currently associated fence
916 * register have changed. Note that for the purposes of tracking
917 * tiling changes we also treat the unfenced register, the register
918 * slot that the object occupies whilst it executes a fenced
919 * command (such as BLT on gen2/3), as a "fence".
921 unsigned int fence_dirty:1;
923 /** How many users have pinned this object in GTT space. The following
924 * users can each hold at most one reference: pwrite/pread, pin_ioctl
925 * (via user_pin_count), execbuffer (objects are not allowed multiple
926 * times for the same batchbuffer), and the framebuffer code. When
927 * switching/pageflipping, the framebuffer code has at most two buffers
930 * In the worst case this is 1 + 1 + 1 + 2*2 = 7. That would fit into 3
931 * bits with absolutely no headroom. So use 4 bits. */
932 unsigned int pin_count:4;
933 #define DRM_I915_GEM_OBJECT_MAX_PIN_COUNT 0xf
936 * Is the object at the current location in the gtt mappable and
937 * fenceable? Used to avoid costly recalculations.
939 unsigned int map_and_fenceable:1;
942 * Whether the current gtt mapping needs to be mappable (and isn't just
943 * mappable by accident). Track pin and fault separate for a more
944 * accurate mappable working set.
946 unsigned int fault_mappable:1;
947 unsigned int pin_mappable:1;
950 * Is the GPU currently using a fence to access this buffer,
952 unsigned int pending_fenced_gpu_access:1;
953 unsigned int fenced_gpu_access:1;
955 unsigned int cache_level:2;
957 unsigned int has_aliasing_ppgtt_mapping:1;
958 unsigned int has_global_gtt_mapping:1;
965 struct scatterlist *sg_list;
968 /* prime dma-buf support */
969 struct sg_table *sg_table;
970 void *dma_buf_vmapping;
974 * Used for performing relocations during execbuffer insertion.
976 struct hlist_node exec_node;
977 unsigned long exec_handle;
978 struct drm_i915_gem_exec_object2 *exec_entry;
981 * Current offset of the object in GTT space.
983 * This is the same as gtt_space->start
987 struct intel_ring_buffer *ring;
989 /** Breadcrumb of last rendering to the buffer. */
990 uint32_t last_rendering_seqno;
991 /** Breadcrumb of last fenced GPU access to the buffer. */
992 uint32_t last_fenced_seqno;
994 /** Current tiling stride for the object, if it's tiled. */
997 /** Record of address bit 17 of each page at last unbind. */
998 unsigned long *bit_17;
1000 /** User space pin count and filp owning the pin */
1001 uint32_t user_pin_count;
1002 struct drm_file *pin_filp;
1004 /** for phy allocated objects */
1005 struct drm_i915_gem_phys_object *phys_obj;
1008 * Number of crtcs where this object is currently the fb, but
1009 * will be page flipped away on the next vblank. When it
1010 * reaches 0, dev_priv->pending_flip_queue will be woken up.
1012 atomic_t pending_flip;
1015 #define to_intel_bo(x) container_of(x, struct drm_i915_gem_object, base)
1018 * Request queue structure.
1020 * The request queue allows us to note sequence numbers that have been emitted
1021 * and may be associated with active buffers to be retired.
1023 * By keeping this list, we can avoid having to do questionable
1024 * sequence-number comparisons on buffer last_rendering_seqnos, and associate
1025 * an emission time with seqnos for tracking how far ahead of the GPU we are.
1027 struct drm_i915_gem_request {
1028 /** On Which ring this request was generated */
1029 struct intel_ring_buffer *ring;
1031 /** GEM sequence number associated with this request. */
1034 /** Postion in the ringbuffer of the end of the request */
1037 /** Time at which this request was emitted, in jiffies. */
1038 unsigned long emitted_jiffies;
1040 /** global list entry for this request */
1041 struct list_head list;
1043 struct drm_i915_file_private *file_priv;
1044 /** file_priv list entry for this request */
1045 struct list_head client_list;
1048 struct drm_i915_file_private {
1050 struct spinlock lock;
1051 struct list_head request_list;
1053 struct idr context_idr;
1056 #define INTEL_INFO(dev) (((struct drm_i915_private *) (dev)->dev_private)->info)
1058 #define IS_I830(dev) ((dev)->pci_device == 0x3577)
1059 #define IS_845G(dev) ((dev)->pci_device == 0x2562)
1060 #define IS_I85X(dev) (INTEL_INFO(dev)->is_i85x)
1061 #define IS_I865G(dev) ((dev)->pci_device == 0x2572)
1062 #define IS_I915G(dev) (INTEL_INFO(dev)->is_i915g)
1063 #define IS_I915GM(dev) ((dev)->pci_device == 0x2592)
1064 #define IS_I945G(dev) ((dev)->pci_device == 0x2772)
1065 #define IS_I945GM(dev) (INTEL_INFO(dev)->is_i945gm)
1066 #define IS_BROADWATER(dev) (INTEL_INFO(dev)->is_broadwater)
1067 #define IS_CRESTLINE(dev) (INTEL_INFO(dev)->is_crestline)
1068 #define IS_GM45(dev) ((dev)->pci_device == 0x2A42)
1069 #define IS_G4X(dev) (INTEL_INFO(dev)->is_g4x)
1070 #define IS_PINEVIEW_G(dev) ((dev)->pci_device == 0xa001)
1071 #define IS_PINEVIEW_M(dev) ((dev)->pci_device == 0xa011)
1072 #define IS_PINEVIEW(dev) (INTEL_INFO(dev)->is_pineview)
1073 #define IS_G33(dev) (INTEL_INFO(dev)->is_g33)
1074 #define IS_IRONLAKE_D(dev) ((dev)->pci_device == 0x0042)
1075 #define IS_IRONLAKE_M(dev) ((dev)->pci_device == 0x0046)
1076 #define IS_IVYBRIDGE(dev) (INTEL_INFO(dev)->is_ivybridge)
1077 #define IS_VALLEYVIEW(dev) (INTEL_INFO(dev)->is_valleyview)
1078 #define IS_HASWELL(dev) (INTEL_INFO(dev)->is_haswell)
1079 #define IS_MOBILE(dev) (INTEL_INFO(dev)->is_mobile)
1082 * The genX designation typically refers to the render engine, so render
1083 * capability related checks should use IS_GEN, while display and other checks
1084 * have their own (e.g. HAS_PCH_SPLIT for ILK+ display, IS_foo for particular
1087 #define IS_GEN2(dev) (INTEL_INFO(dev)->gen == 2)
1088 #define IS_GEN3(dev) (INTEL_INFO(dev)->gen == 3)
1089 #define IS_GEN4(dev) (INTEL_INFO(dev)->gen == 4)
1090 #define IS_GEN5(dev) (INTEL_INFO(dev)->gen == 5)
1091 #define IS_GEN6(dev) (INTEL_INFO(dev)->gen == 6)
1092 #define IS_GEN7(dev) (INTEL_INFO(dev)->gen == 7)
1094 #define HAS_BSD(dev) (INTEL_INFO(dev)->has_bsd_ring)
1095 #define HAS_BLT(dev) (INTEL_INFO(dev)->has_blt_ring)
1096 #define HAS_LLC(dev) (INTEL_INFO(dev)->has_llc)
1097 #define I915_NEED_GFX_HWS(dev) (INTEL_INFO(dev)->need_gfx_hws)
1099 #define HAS_HW_CONTEXTS(dev) (INTEL_INFO(dev)->gen >= 6)
1100 #define HAS_ALIASING_PPGTT(dev) (INTEL_INFO(dev)->gen >=6 && !IS_VALLEYVIEW(dev))
1102 #define HAS_OVERLAY(dev) (INTEL_INFO(dev)->has_overlay)
1103 #define OVERLAY_NEEDS_PHYSICAL(dev) (INTEL_INFO(dev)->overlay_needs_physical)
1105 /* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
1106 * rows, which changed the alignment requirements and fence programming.
1108 #define HAS_128_BYTE_Y_TILING(dev) (!IS_GEN2(dev) && !(IS_I915G(dev) || \
1110 #define SUPPORTS_DIGITAL_OUTPUTS(dev) (!IS_GEN2(dev) && !IS_PINEVIEW(dev))
1111 #define SUPPORTS_INTEGRATED_HDMI(dev) (IS_G4X(dev) || IS_GEN5(dev))
1112 #define SUPPORTS_INTEGRATED_DP(dev) (IS_G4X(dev) || IS_GEN5(dev))
1113 #define SUPPORTS_EDP(dev) (IS_IRONLAKE_M(dev))
1114 #define SUPPORTS_TV(dev) (INTEL_INFO(dev)->supports_tv)
1115 #define I915_HAS_HOTPLUG(dev) (INTEL_INFO(dev)->has_hotplug)
1116 /* dsparb controlled by hw only */
1117 #define DSPARB_HWCONTROL(dev) (IS_G4X(dev) || IS_IRONLAKE(dev))
1119 #define HAS_FW_BLC(dev) (INTEL_INFO(dev)->gen > 2)
1120 #define HAS_PIPE_CXSR(dev) (INTEL_INFO(dev)->has_pipe_cxsr)
1121 #define I915_HAS_FBC(dev) (INTEL_INFO(dev)->has_fbc)
1123 #define HAS_PCH_SPLIT(dev) (INTEL_INFO(dev)->has_pch_split)
1124 #define HAS_PIPE_CONTROL(dev) (INTEL_INFO(dev)->gen >= 5)
1126 #define INTEL_PCH_TYPE(dev) (((struct drm_i915_private *)(dev)->dev_private)->pch_type)
1127 #define HAS_PCH_LPT(dev) (INTEL_PCH_TYPE(dev) == PCH_LPT)
1128 #define HAS_PCH_CPT(dev) (INTEL_PCH_TYPE(dev) == PCH_CPT)
1129 #define HAS_PCH_IBX(dev) (INTEL_PCH_TYPE(dev) == PCH_IBX)
1131 #define HAS_FORCE_WAKE(dev) (INTEL_INFO(dev)->has_force_wake)
1133 #include "i915_trace.h"
1136 * RC6 is a special power stage which allows the GPU to enter an very
1137 * low-voltage mode when idle, using down to 0V while at this stage. This
1138 * stage is entered automatically when the GPU is idle when RC6 support is
1139 * enabled, and as soon as new workload arises GPU wakes up automatically as well.
1141 * There are different RC6 modes available in Intel GPU, which differentiate
1142 * among each other with the latency required to enter and leave RC6 and
1143 * voltage consumed by the GPU in different states.
1145 * The combination of the following flags define which states GPU is allowed
1146 * to enter, while RC6 is the normal RC6 state, RC6p is the deep RC6, and
1147 * RC6pp is deepest RC6. Their support by hardware varies according to the
1148 * GPU, BIOS, chipset and platform. RC6 is usually the safest one and the one
1149 * which brings the most power savings; deeper states save more power, but
1150 * require higher latency to switch to and wake up.
1152 #define INTEL_RC6_ENABLE (1<<0)
1153 #define INTEL_RC6p_ENABLE (1<<1)
1154 #define INTEL_RC6pp_ENABLE (1<<2)
1156 extern struct drm_ioctl_desc i915_ioctls[];
1157 extern int i915_max_ioctl;
1158 extern unsigned int i915_fbpercrtc __always_unused;
1159 extern int i915_panel_ignore_lid __read_mostly;
1160 extern unsigned int i915_powersave __read_mostly;
1161 extern int i915_semaphores __read_mostly;
1162 extern unsigned int i915_lvds_downclock __read_mostly;
1163 extern int i915_lvds_channel_mode __read_mostly;
1164 extern int i915_panel_use_ssc __read_mostly;
1165 extern int i915_vbt_sdvo_panel_type __read_mostly;
1166 extern int i915_enable_rc6 __read_mostly;
1167 extern int i915_enable_fbc __read_mostly;
1168 extern bool i915_enable_hangcheck __read_mostly;
1169 extern int i915_enable_ppgtt __read_mostly;
1171 extern int i915_suspend(struct drm_device *dev, pm_message_t state);
1172 extern int i915_resume(struct drm_device *dev);
1173 extern int i915_master_create(struct drm_device *dev, struct drm_master *master);
1174 extern void i915_master_destroy(struct drm_device *dev, struct drm_master *master);
1177 void i915_update_dri1_breadcrumb(struct drm_device *dev);
1178 extern void i915_kernel_lost_context(struct drm_device * dev);
1179 extern int i915_driver_load(struct drm_device *, unsigned long flags);
1180 extern int i915_driver_unload(struct drm_device *);
1181 extern int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv);
1182 extern void i915_driver_lastclose(struct drm_device * dev);
1183 extern void i915_driver_preclose(struct drm_device *dev,
1184 struct drm_file *file_priv);
1185 extern void i915_driver_postclose(struct drm_device *dev,
1186 struct drm_file *file_priv);
1187 extern int i915_driver_device_is_agp(struct drm_device * dev);
1188 #ifdef CONFIG_COMPAT
1189 extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
1192 extern int i915_emit_box(struct drm_device *dev,
1193 struct drm_clip_rect *box,
1195 extern int intel_gpu_reset(struct drm_device *dev);
1196 extern int i915_reset(struct drm_device *dev);
1197 extern unsigned long i915_chipset_val(struct drm_i915_private *dev_priv);
1198 extern unsigned long i915_mch_val(struct drm_i915_private *dev_priv);
1199 extern unsigned long i915_gfx_val(struct drm_i915_private *dev_priv);
1200 extern void i915_update_gfx_val(struct drm_i915_private *dev_priv);
1204 void i915_hangcheck_elapsed(unsigned long data);
1205 void i915_handle_error(struct drm_device *dev, bool wedged);
1207 extern void intel_irq_init(struct drm_device *dev);
1208 extern void intel_gt_init(struct drm_device *dev);
1210 void i915_error_state_free(struct kref *error_ref);
1213 i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
1216 i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
1218 void intel_enable_asle(struct drm_device *dev);
1220 #ifdef CONFIG_DEBUG_FS
1221 extern void i915_destroy_error_state(struct drm_device *dev);
1223 #define i915_destroy_error_state(x)
1228 int i915_gem_init_ioctl(struct drm_device *dev, void *data,
1229 struct drm_file *file_priv);
1230 int i915_gem_create_ioctl(struct drm_device *dev, void *data,
1231 struct drm_file *file_priv);
1232 int i915_gem_pread_ioctl(struct drm_device *dev, void *data,
1233 struct drm_file *file_priv);
1234 int i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
1235 struct drm_file *file_priv);
1236 int i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
1237 struct drm_file *file_priv);
1238 int i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
1239 struct drm_file *file_priv);
1240 int i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
1241 struct drm_file *file_priv);
1242 int i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
1243 struct drm_file *file_priv);
1244 int i915_gem_execbuffer(struct drm_device *dev, void *data,
1245 struct drm_file *file_priv);
1246 int i915_gem_execbuffer2(struct drm_device *dev, void *data,
1247 struct drm_file *file_priv);
1248 int i915_gem_pin_ioctl(struct drm_device *dev, void *data,
1249 struct drm_file *file_priv);
1250 int i915_gem_unpin_ioctl(struct drm_device *dev, void *data,
1251 struct drm_file *file_priv);
1252 int i915_gem_busy_ioctl(struct drm_device *dev, void *data,
1253 struct drm_file *file_priv);
1254 int i915_gem_throttle_ioctl(struct drm_device *dev, void *data,
1255 struct drm_file *file_priv);
1256 int i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
1257 struct drm_file *file_priv);
1258 int i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
1259 struct drm_file *file_priv);
1260 int i915_gem_leavevt_ioctl(struct drm_device *dev, void *data,
1261 struct drm_file *file_priv);
1262 int i915_gem_set_tiling(struct drm_device *dev, void *data,
1263 struct drm_file *file_priv);
1264 int i915_gem_get_tiling(struct drm_device *dev, void *data,
1265 struct drm_file *file_priv);
1266 int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
1267 struct drm_file *file_priv);
1268 int i915_gem_wait_ioctl(struct drm_device *dev, void *data,
1269 struct drm_file *file_priv);
1270 void i915_gem_load(struct drm_device *dev);
1271 int i915_gem_init_object(struct drm_gem_object *obj);
1272 int __must_check i915_gem_flush_ring(struct intel_ring_buffer *ring,
1273 uint32_t invalidate_domains,
1274 uint32_t flush_domains);
1275 struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
1277 void i915_gem_free_object(struct drm_gem_object *obj);
1278 int __must_check i915_gem_object_pin(struct drm_i915_gem_object *obj,
1280 bool map_and_fenceable);
1281 void i915_gem_object_unpin(struct drm_i915_gem_object *obj);
1282 int __must_check i915_gem_object_unbind(struct drm_i915_gem_object *obj);
1283 void i915_gem_release_mmap(struct drm_i915_gem_object *obj);
1284 void i915_gem_lastclose(struct drm_device *dev);
1286 int i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj,
1288 int __must_check i915_mutex_lock_interruptible(struct drm_device *dev);
1289 int __must_check i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj);
1290 int i915_gem_object_sync(struct drm_i915_gem_object *obj,
1291 struct intel_ring_buffer *to);
1292 void i915_gem_object_move_to_active(struct drm_i915_gem_object *obj,
1293 struct intel_ring_buffer *ring,
1296 int i915_gem_dumb_create(struct drm_file *file_priv,
1297 struct drm_device *dev,
1298 struct drm_mode_create_dumb *args);
1299 int i915_gem_mmap_gtt(struct drm_file *file_priv, struct drm_device *dev,
1300 uint32_t handle, uint64_t *offset);
1301 int i915_gem_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
1304 * Returns true if seq1 is later than seq2.
1307 i915_seqno_passed(uint32_t seq1, uint32_t seq2)
1309 return (int32_t)(seq1 - seq2) >= 0;
1312 u32 i915_gem_next_request_seqno(struct intel_ring_buffer *ring);
1314 int __must_check i915_gem_object_get_fence(struct drm_i915_gem_object *obj);
1315 int __must_check i915_gem_object_put_fence(struct drm_i915_gem_object *obj);
1318 i915_gem_object_pin_fence(struct drm_i915_gem_object *obj)
1320 if (obj->fence_reg != I915_FENCE_REG_NONE) {
1321 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
1322 dev_priv->fence_regs[obj->fence_reg].pin_count++;
1329 i915_gem_object_unpin_fence(struct drm_i915_gem_object *obj)
1331 if (obj->fence_reg != I915_FENCE_REG_NONE) {
1332 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
1333 dev_priv->fence_regs[obj->fence_reg].pin_count--;
1337 void i915_gem_retire_requests(struct drm_device *dev);
1338 void i915_gem_retire_requests_ring(struct intel_ring_buffer *ring);
1340 void i915_gem_reset(struct drm_device *dev);
1341 void i915_gem_clflush_object(struct drm_i915_gem_object *obj);
1342 int __must_check i915_gem_object_set_domain(struct drm_i915_gem_object *obj,
1343 uint32_t read_domains,
1344 uint32_t write_domain);
1345 int __must_check i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj);
1346 int __must_check i915_gem_init(struct drm_device *dev);
1347 int __must_check i915_gem_init_hw(struct drm_device *dev);
1348 void i915_gem_l3_remap(struct drm_device *dev);
1349 void i915_gem_init_swizzling(struct drm_device *dev);
1350 void i915_gem_init_ppgtt(struct drm_device *dev);
1351 void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
1352 int __must_check i915_gpu_idle(struct drm_device *dev);
1353 int __must_check i915_gem_idle(struct drm_device *dev);
1354 int __must_check i915_add_request(struct intel_ring_buffer *ring,
1355 struct drm_file *file,
1356 struct drm_i915_gem_request *request);
1357 int __must_check i915_wait_seqno(struct intel_ring_buffer *ring,
1359 int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
1361 i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj,
1364 i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
1366 i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
1368 struct intel_ring_buffer *pipelined);
1369 int i915_gem_attach_phys_object(struct drm_device *dev,
1370 struct drm_i915_gem_object *obj,
1373 void i915_gem_detach_phys_object(struct drm_device *dev,
1374 struct drm_i915_gem_object *obj);
1375 void i915_gem_free_all_phys_object(struct drm_device *dev);
1376 void i915_gem_release(struct drm_device *dev, struct drm_file *file);
1379 i915_gem_get_unfenced_gtt_alignment(struct drm_device *dev,
1383 int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
1384 enum i915_cache_level cache_level);
1386 struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
1387 struct dma_buf *dma_buf);
1389 struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
1390 struct drm_gem_object *gem_obj, int flags);
1392 /* i915_gem_context.c */
1393 void i915_gem_context_init(struct drm_device *dev);
1394 void i915_gem_context_fini(struct drm_device *dev);
1395 void i915_gem_context_close(struct drm_device *dev, struct drm_file *file);
1396 int i915_switch_context(struct intel_ring_buffer *ring,
1397 struct drm_file *file, int to_id);
1398 int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
1399 struct drm_file *file);
1400 int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
1401 struct drm_file *file);
1403 /* i915_gem_gtt.c */
1404 int __must_check i915_gem_init_aliasing_ppgtt(struct drm_device *dev);
1405 void i915_gem_cleanup_aliasing_ppgtt(struct drm_device *dev);
1406 void i915_ppgtt_bind_object(struct i915_hw_ppgtt *ppgtt,
1407 struct drm_i915_gem_object *obj,
1408 enum i915_cache_level cache_level);
1409 void i915_ppgtt_unbind_object(struct i915_hw_ppgtt *ppgtt,
1410 struct drm_i915_gem_object *obj);
1412 void i915_gem_restore_gtt_mappings(struct drm_device *dev);
1413 int __must_check i915_gem_gtt_prepare_object(struct drm_i915_gem_object *obj);
1414 void i915_gem_gtt_bind_object(struct drm_i915_gem_object *obj,
1415 enum i915_cache_level cache_level);
1416 void i915_gem_gtt_unbind_object(struct drm_i915_gem_object *obj);
1417 void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj);
1418 void i915_gem_init_global_gtt(struct drm_device *dev,
1419 unsigned long start,
1420 unsigned long mappable_end,
1423 /* i915_gem_evict.c */
1424 int __must_check i915_gem_evict_something(struct drm_device *dev, int min_size,
1425 unsigned alignment, bool mappable);
1426 int i915_gem_evict_everything(struct drm_device *dev, bool purgeable_only);
1428 /* i915_gem_stolen.c */
1429 int i915_gem_init_stolen(struct drm_device *dev);
1430 void i915_gem_cleanup_stolen(struct drm_device *dev);
1432 /* i915_gem_tiling.c */
1433 void i915_gem_detect_bit_6_swizzle(struct drm_device *dev);
1434 void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj);
1435 void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj);
1437 /* i915_gem_debug.c */
1438 void i915_gem_dump_object(struct drm_i915_gem_object *obj, int len,
1439 const char *where, uint32_t mark);
1441 int i915_verify_lists(struct drm_device *dev);
1443 #define i915_verify_lists(dev) 0
1445 void i915_gem_object_check_coherency(struct drm_i915_gem_object *obj,
1447 void i915_gem_dump_object(struct drm_i915_gem_object *obj, int len,
1448 const char *where, uint32_t mark);
1450 /* i915_debugfs.c */
1451 int i915_debugfs_init(struct drm_minor *minor);
1452 void i915_debugfs_cleanup(struct drm_minor *minor);
1454 /* i915_suspend.c */
1455 extern int i915_save_state(struct drm_device *dev);
1456 extern int i915_restore_state(struct drm_device *dev);
1458 /* i915_suspend.c */
1459 extern int i915_save_state(struct drm_device *dev);
1460 extern int i915_restore_state(struct drm_device *dev);
1463 void i915_setup_sysfs(struct drm_device *dev_priv);
1464 void i915_teardown_sysfs(struct drm_device *dev_priv);
1467 extern int intel_setup_gmbus(struct drm_device *dev);
1468 extern void intel_teardown_gmbus(struct drm_device *dev);
1469 extern inline bool intel_gmbus_is_port_valid(unsigned port)
1471 return (port >= GMBUS_PORT_SSC && port <= GMBUS_PORT_DPD);
1474 extern struct i2c_adapter *intel_gmbus_get_adapter(
1475 struct drm_i915_private *dev_priv, unsigned port);
1476 extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
1477 extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
1478 extern inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)
1480 return container_of(adapter, struct intel_gmbus, adapter)->force_bit;
1482 extern void intel_i2c_reset(struct drm_device *dev);
1484 /* intel_opregion.c */
1485 extern int intel_opregion_setup(struct drm_device *dev);
1487 extern void intel_opregion_init(struct drm_device *dev);
1488 extern void intel_opregion_fini(struct drm_device *dev);
1489 extern void intel_opregion_asle_intr(struct drm_device *dev);
1490 extern void intel_opregion_gse_intr(struct drm_device *dev);
1491 extern void intel_opregion_enable_asle(struct drm_device *dev);
1493 static inline void intel_opregion_init(struct drm_device *dev) { return; }
1494 static inline void intel_opregion_fini(struct drm_device *dev) { return; }
1495 static inline void intel_opregion_asle_intr(struct drm_device *dev) { return; }
1496 static inline void intel_opregion_gse_intr(struct drm_device *dev) { return; }
1497 static inline void intel_opregion_enable_asle(struct drm_device *dev) { return; }
1502 extern void intel_register_dsm_handler(void);
1503 extern void intel_unregister_dsm_handler(void);
1505 static inline void intel_register_dsm_handler(void) { return; }
1506 static inline void intel_unregister_dsm_handler(void) { return; }
1507 #endif /* CONFIG_ACPI */
1510 extern void intel_modeset_init_hw(struct drm_device *dev);
1511 extern void intel_modeset_init(struct drm_device *dev);
1512 extern void intel_modeset_gem_init(struct drm_device *dev);
1513 extern void intel_modeset_cleanup(struct drm_device *dev);
1514 extern int intel_modeset_vga_set_state(struct drm_device *dev, bool state);
1515 extern bool intel_fbc_enabled(struct drm_device *dev);
1516 extern void intel_disable_fbc(struct drm_device *dev);
1517 extern bool ironlake_set_drps(struct drm_device *dev, u8 val);
1518 extern void ironlake_init_pch_refclk(struct drm_device *dev);
1519 extern void ironlake_enable_rc6(struct drm_device *dev);
1520 extern void gen6_set_rps(struct drm_device *dev, u8 val);
1521 extern void intel_detect_pch(struct drm_device *dev);
1522 extern int intel_trans_dp_port_sel(struct drm_crtc *crtc);
1523 extern int intel_enable_rc6(const struct drm_device *dev);
1525 extern bool i915_semaphore_is_enabled(struct drm_device *dev);
1528 #ifdef CONFIG_DEBUG_FS
1529 extern struct intel_overlay_error_state *intel_overlay_capture_error_state(struct drm_device *dev);
1530 extern void intel_overlay_print_error_state(struct seq_file *m, struct intel_overlay_error_state *error);
1532 extern struct intel_display_error_state *intel_display_capture_error_state(struct drm_device *dev);
1533 extern void intel_display_print_error_state(struct seq_file *m,
1534 struct drm_device *dev,
1535 struct intel_display_error_state *error);
1538 /* On SNB platform, before reading ring registers forcewake bit
1539 * must be set to prevent GT core from power down and stale values being
1542 void gen6_gt_force_wake_get(struct drm_i915_private *dev_priv);
1543 void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv);
1544 int __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv);
1546 #define __i915_read(x, y) \
1547 u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg);
1555 #define __i915_write(x, y) \
1556 void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val);
1564 #define I915_READ8(reg) i915_read8(dev_priv, (reg))
1565 #define I915_WRITE8(reg, val) i915_write8(dev_priv, (reg), (val))
1567 #define I915_READ16(reg) i915_read16(dev_priv, (reg))
1568 #define I915_WRITE16(reg, val) i915_write16(dev_priv, (reg), (val))
1569 #define I915_READ16_NOTRACE(reg) readw(dev_priv->regs + (reg))
1570 #define I915_WRITE16_NOTRACE(reg, val) writew(val, dev_priv->regs + (reg))
1572 #define I915_READ(reg) i915_read32(dev_priv, (reg))
1573 #define I915_WRITE(reg, val) i915_write32(dev_priv, (reg), (val))
1574 #define I915_READ_NOTRACE(reg) readl(dev_priv->regs + (reg))
1575 #define I915_WRITE_NOTRACE(reg, val) writel(val, dev_priv->regs + (reg))
1577 #define I915_WRITE64(reg, val) i915_write64(dev_priv, (reg), (val))
1578 #define I915_READ64(reg) i915_read64(dev_priv, (reg))
1580 #define POSTING_READ(reg) (void)I915_READ_NOTRACE(reg)
1581 #define POSTING_READ16(reg) (void)I915_READ16_NOTRACE(reg)