1 /* i915_drv.c -- i830,i845,i855,i865,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.
30 #include <linux/device.h>
32 #include <drm/i915_drm.h>
34 #include "i915_trace.h"
35 #include "intel_drv.h"
37 #include <linux/console.h>
38 #include <linux/module.h>
39 #include <drm/drm_crtc_helper.h>
41 static int i915_modeset __read_mostly
= -1;
42 module_param_named(modeset
, i915_modeset
, int, 0400);
43 MODULE_PARM_DESC(modeset
,
44 "Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, "
45 "1=on, -1=force vga console preference [default])");
47 unsigned int i915_fbpercrtc __always_unused
= 0;
48 module_param_named(fbpercrtc
, i915_fbpercrtc
, int, 0400);
50 int i915_panel_ignore_lid __read_mostly
= 1;
51 module_param_named(panel_ignore_lid
, i915_panel_ignore_lid
, int, 0600);
52 MODULE_PARM_DESC(panel_ignore_lid
,
53 "Override lid status (0=autodetect, 1=autodetect disabled [default], "
54 "-1=force lid closed, -2=force lid open)");
56 unsigned int i915_powersave __read_mostly
= 1;
57 module_param_named(powersave
, i915_powersave
, int, 0600);
58 MODULE_PARM_DESC(powersave
,
59 "Enable powersavings, fbc, downclocking, etc. (default: true)");
61 int i915_semaphores __read_mostly
= -1;
62 module_param_named(semaphores
, i915_semaphores
, int, 0600);
63 MODULE_PARM_DESC(semaphores
,
64 "Use semaphores for inter-ring sync (default: -1 (use per-chip defaults))");
66 int i915_enable_rc6 __read_mostly
= -1;
67 module_param_named(i915_enable_rc6
, i915_enable_rc6
, int, 0400);
68 MODULE_PARM_DESC(i915_enable_rc6
,
69 "Enable power-saving render C-state 6. "
70 "Different stages can be selected via bitmask values "
71 "(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
72 "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
73 "default: -1 (use per-chip default)");
75 int i915_enable_fbc __read_mostly
= -1;
76 module_param_named(i915_enable_fbc
, i915_enable_fbc
, int, 0600);
77 MODULE_PARM_DESC(i915_enable_fbc
,
78 "Enable frame buffer compression for power savings "
79 "(default: -1 (use per-chip default))");
81 unsigned int i915_lvds_downclock __read_mostly
= 0;
82 module_param_named(lvds_downclock
, i915_lvds_downclock
, int, 0400);
83 MODULE_PARM_DESC(lvds_downclock
,
84 "Use panel (LVDS/eDP) downclocking for power savings "
87 int i915_lvds_channel_mode __read_mostly
;
88 module_param_named(lvds_channel_mode
, i915_lvds_channel_mode
, int, 0600);
89 MODULE_PARM_DESC(lvds_channel_mode
,
90 "Specify LVDS channel mode "
91 "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
93 int i915_panel_use_ssc __read_mostly
= -1;
94 module_param_named(lvds_use_ssc
, i915_panel_use_ssc
, int, 0600);
95 MODULE_PARM_DESC(lvds_use_ssc
,
96 "Use Spread Spectrum Clock with panels [LVDS/eDP] "
97 "(default: auto from VBT)");
99 int i915_vbt_sdvo_panel_type __read_mostly
= -1;
100 module_param_named(vbt_sdvo_panel_type
, i915_vbt_sdvo_panel_type
, int, 0600);
101 MODULE_PARM_DESC(vbt_sdvo_panel_type
,
102 "Override/Ignore selection of SDVO panel mode in the VBT "
103 "(-2=ignore, -1=auto [default], index in VBT BIOS table)");
105 static bool i915_try_reset __read_mostly
= true;
106 module_param_named(reset
, i915_try_reset
, bool, 0600);
107 MODULE_PARM_DESC(reset
, "Attempt GPU resets (default: true)");
109 bool i915_enable_hangcheck __read_mostly
= true;
110 module_param_named(enable_hangcheck
, i915_enable_hangcheck
, bool, 0644);
111 MODULE_PARM_DESC(enable_hangcheck
,
112 "Periodically check GPU activity for detecting hangs. "
113 "WARNING: Disabling this can cause system wide hangs. "
116 int i915_enable_ppgtt __read_mostly
= -1;
117 module_param_named(i915_enable_ppgtt
, i915_enable_ppgtt
, int, 0600);
118 MODULE_PARM_DESC(i915_enable_ppgtt
,
119 "Enable PPGTT (default: true)");
121 unsigned int i915_preliminary_hw_support __read_mostly
= 0;
122 module_param_named(preliminary_hw_support
, i915_preliminary_hw_support
, int, 0600);
123 MODULE_PARM_DESC(preliminary_hw_support
,
124 "Enable preliminary hardware support. "
125 "Enable Haswell and ValleyView Support. "
128 static struct drm_driver driver
;
129 extern int intel_agp_enabled
;
131 #define INTEL_VGA_DEVICE(id, info) { \
132 .class = PCI_BASE_CLASS_DISPLAY << 16, \
133 .class_mask = 0xff0000, \
136 .subvendor = PCI_ANY_ID, \
137 .subdevice = PCI_ANY_ID, \
138 .driver_data = (unsigned long) info }
140 static const struct intel_device_info intel_i830_info
= {
141 .gen
= 2, .is_mobile
= 1, .cursor_needs_physical
= 1,
142 .has_overlay
= 1, .overlay_needs_physical
= 1,
145 static const struct intel_device_info intel_845g_info
= {
147 .has_overlay
= 1, .overlay_needs_physical
= 1,
150 static const struct intel_device_info intel_i85x_info
= {
151 .gen
= 2, .is_i85x
= 1, .is_mobile
= 1,
152 .cursor_needs_physical
= 1,
153 .has_overlay
= 1, .overlay_needs_physical
= 1,
156 static const struct intel_device_info intel_i865g_info
= {
158 .has_overlay
= 1, .overlay_needs_physical
= 1,
161 static const struct intel_device_info intel_i915g_info
= {
162 .gen
= 3, .is_i915g
= 1, .cursor_needs_physical
= 1,
163 .has_overlay
= 1, .overlay_needs_physical
= 1,
165 static const struct intel_device_info intel_i915gm_info
= {
166 .gen
= 3, .is_mobile
= 1,
167 .cursor_needs_physical
= 1,
168 .has_overlay
= 1, .overlay_needs_physical
= 1,
171 static const struct intel_device_info intel_i945g_info
= {
172 .gen
= 3, .has_hotplug
= 1, .cursor_needs_physical
= 1,
173 .has_overlay
= 1, .overlay_needs_physical
= 1,
175 static const struct intel_device_info intel_i945gm_info
= {
176 .gen
= 3, .is_i945gm
= 1, .is_mobile
= 1,
177 .has_hotplug
= 1, .cursor_needs_physical
= 1,
178 .has_overlay
= 1, .overlay_needs_physical
= 1,
182 static const struct intel_device_info intel_i965g_info
= {
183 .gen
= 4, .is_broadwater
= 1,
188 static const struct intel_device_info intel_i965gm_info
= {
189 .gen
= 4, .is_crestline
= 1,
190 .is_mobile
= 1, .has_fbc
= 1, .has_hotplug
= 1,
195 static const struct intel_device_info intel_g33_info
= {
196 .gen
= 3, .is_g33
= 1,
197 .need_gfx_hws
= 1, .has_hotplug
= 1,
201 static const struct intel_device_info intel_g45_info
= {
202 .gen
= 4, .is_g4x
= 1, .need_gfx_hws
= 1,
203 .has_pipe_cxsr
= 1, .has_hotplug
= 1,
207 static const struct intel_device_info intel_gm45_info
= {
208 .gen
= 4, .is_g4x
= 1,
209 .is_mobile
= 1, .need_gfx_hws
= 1, .has_fbc
= 1,
210 .has_pipe_cxsr
= 1, .has_hotplug
= 1,
215 static const struct intel_device_info intel_pineview_info
= {
216 .gen
= 3, .is_g33
= 1, .is_pineview
= 1, .is_mobile
= 1,
217 .need_gfx_hws
= 1, .has_hotplug
= 1,
221 static const struct intel_device_info intel_ironlake_d_info
= {
223 .need_gfx_hws
= 1, .has_hotplug
= 1,
227 static const struct intel_device_info intel_ironlake_m_info
= {
228 .gen
= 5, .is_mobile
= 1,
229 .need_gfx_hws
= 1, .has_hotplug
= 1,
234 static const struct intel_device_info intel_sandybridge_d_info
= {
236 .need_gfx_hws
= 1, .has_hotplug
= 1,
243 static const struct intel_device_info intel_sandybridge_m_info
= {
244 .gen
= 6, .is_mobile
= 1,
245 .need_gfx_hws
= 1, .has_hotplug
= 1,
253 static const struct intel_device_info intel_ivybridge_d_info
= {
254 .is_ivybridge
= 1, .gen
= 7,
255 .need_gfx_hws
= 1, .has_hotplug
= 1,
262 static const struct intel_device_info intel_ivybridge_m_info
= {
263 .is_ivybridge
= 1, .gen
= 7, .is_mobile
= 1,
264 .need_gfx_hws
= 1, .has_hotplug
= 1,
265 .has_fbc
= 0, /* FBC is not enabled on Ivybridge mobile yet */
272 static const struct intel_device_info intel_valleyview_m_info
= {
273 .gen
= 7, .is_mobile
= 1,
274 .need_gfx_hws
= 1, .has_hotplug
= 1,
281 static const struct intel_device_info intel_valleyview_d_info
= {
283 .need_gfx_hws
= 1, .has_hotplug
= 1,
290 static const struct intel_device_info intel_haswell_d_info
= {
291 .is_haswell
= 1, .gen
= 7,
292 .need_gfx_hws
= 1, .has_hotplug
= 1,
299 static const struct intel_device_info intel_haswell_m_info
= {
300 .is_haswell
= 1, .gen
= 7, .is_mobile
= 1,
301 .need_gfx_hws
= 1, .has_hotplug
= 1,
308 static const struct pci_device_id pciidlist
[] = { /* aka */
309 INTEL_VGA_DEVICE(0x3577, &intel_i830_info
), /* I830_M */
310 INTEL_VGA_DEVICE(0x2562, &intel_845g_info
), /* 845_G */
311 INTEL_VGA_DEVICE(0x3582, &intel_i85x_info
), /* I855_GM */
312 INTEL_VGA_DEVICE(0x358e, &intel_i85x_info
),
313 INTEL_VGA_DEVICE(0x2572, &intel_i865g_info
), /* I865_G */
314 INTEL_VGA_DEVICE(0x2582, &intel_i915g_info
), /* I915_G */
315 INTEL_VGA_DEVICE(0x258a, &intel_i915g_info
), /* E7221_G */
316 INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info
), /* I915_GM */
317 INTEL_VGA_DEVICE(0x2772, &intel_i945g_info
), /* I945_G */
318 INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info
), /* I945_GM */
319 INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info
), /* I945_GME */
320 INTEL_VGA_DEVICE(0x2972, &intel_i965g_info
), /* I946_GZ */
321 INTEL_VGA_DEVICE(0x2982, &intel_i965g_info
), /* G35_G */
322 INTEL_VGA_DEVICE(0x2992, &intel_i965g_info
), /* I965_Q */
323 INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info
), /* I965_G */
324 INTEL_VGA_DEVICE(0x29b2, &intel_g33_info
), /* Q35_G */
325 INTEL_VGA_DEVICE(0x29c2, &intel_g33_info
), /* G33_G */
326 INTEL_VGA_DEVICE(0x29d2, &intel_g33_info
), /* Q33_G */
327 INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info
), /* I965_GM */
328 INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info
), /* I965_GME */
329 INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info
), /* GM45_G */
330 INTEL_VGA_DEVICE(0x2e02, &intel_g45_info
), /* IGD_E_G */
331 INTEL_VGA_DEVICE(0x2e12, &intel_g45_info
), /* Q45_G */
332 INTEL_VGA_DEVICE(0x2e22, &intel_g45_info
), /* G45_G */
333 INTEL_VGA_DEVICE(0x2e32, &intel_g45_info
), /* G41_G */
334 INTEL_VGA_DEVICE(0x2e42, &intel_g45_info
), /* B43_G */
335 INTEL_VGA_DEVICE(0x2e92, &intel_g45_info
), /* B43_G.1 */
336 INTEL_VGA_DEVICE(0xa001, &intel_pineview_info
),
337 INTEL_VGA_DEVICE(0xa011, &intel_pineview_info
),
338 INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info
),
339 INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info
),
340 INTEL_VGA_DEVICE(0x0102, &intel_sandybridge_d_info
),
341 INTEL_VGA_DEVICE(0x0112, &intel_sandybridge_d_info
),
342 INTEL_VGA_DEVICE(0x0122, &intel_sandybridge_d_info
),
343 INTEL_VGA_DEVICE(0x0106, &intel_sandybridge_m_info
),
344 INTEL_VGA_DEVICE(0x0116, &intel_sandybridge_m_info
),
345 INTEL_VGA_DEVICE(0x0126, &intel_sandybridge_m_info
),
346 INTEL_VGA_DEVICE(0x010A, &intel_sandybridge_d_info
),
347 INTEL_VGA_DEVICE(0x0156, &intel_ivybridge_m_info
), /* GT1 mobile */
348 INTEL_VGA_DEVICE(0x0166, &intel_ivybridge_m_info
), /* GT2 mobile */
349 INTEL_VGA_DEVICE(0x0152, &intel_ivybridge_d_info
), /* GT1 desktop */
350 INTEL_VGA_DEVICE(0x0162, &intel_ivybridge_d_info
), /* GT2 desktop */
351 INTEL_VGA_DEVICE(0x015a, &intel_ivybridge_d_info
), /* GT1 server */
352 INTEL_VGA_DEVICE(0x016a, &intel_ivybridge_d_info
), /* GT2 server */
353 INTEL_VGA_DEVICE(0x0402, &intel_haswell_d_info
), /* GT1 desktop */
354 INTEL_VGA_DEVICE(0x0412, &intel_haswell_d_info
), /* GT2 desktop */
355 INTEL_VGA_DEVICE(0x0422, &intel_haswell_d_info
), /* GT2 desktop */
356 INTEL_VGA_DEVICE(0x040a, &intel_haswell_d_info
), /* GT1 server */
357 INTEL_VGA_DEVICE(0x041a, &intel_haswell_d_info
), /* GT2 server */
358 INTEL_VGA_DEVICE(0x042a, &intel_haswell_d_info
), /* GT2 server */
359 INTEL_VGA_DEVICE(0x0406, &intel_haswell_m_info
), /* GT1 mobile */
360 INTEL_VGA_DEVICE(0x0416, &intel_haswell_m_info
), /* GT2 mobile */
361 INTEL_VGA_DEVICE(0x0426, &intel_haswell_m_info
), /* GT2 mobile */
362 INTEL_VGA_DEVICE(0x0C02, &intel_haswell_d_info
), /* SDV GT1 desktop */
363 INTEL_VGA_DEVICE(0x0C12, &intel_haswell_d_info
), /* SDV GT2 desktop */
364 INTEL_VGA_DEVICE(0x0C22, &intel_haswell_d_info
), /* SDV GT2 desktop */
365 INTEL_VGA_DEVICE(0x0C0A, &intel_haswell_d_info
), /* SDV GT1 server */
366 INTEL_VGA_DEVICE(0x0C1A, &intel_haswell_d_info
), /* SDV GT2 server */
367 INTEL_VGA_DEVICE(0x0C2A, &intel_haswell_d_info
), /* SDV GT2 server */
368 INTEL_VGA_DEVICE(0x0C06, &intel_haswell_m_info
), /* SDV GT1 mobile */
369 INTEL_VGA_DEVICE(0x0C16, &intel_haswell_m_info
), /* SDV GT2 mobile */
370 INTEL_VGA_DEVICE(0x0C26, &intel_haswell_m_info
), /* SDV GT2 mobile */
371 INTEL_VGA_DEVICE(0x0A02, &intel_haswell_d_info
), /* ULT GT1 desktop */
372 INTEL_VGA_DEVICE(0x0A12, &intel_haswell_d_info
), /* ULT GT2 desktop */
373 INTEL_VGA_DEVICE(0x0A22, &intel_haswell_d_info
), /* ULT GT2 desktop */
374 INTEL_VGA_DEVICE(0x0A0A, &intel_haswell_d_info
), /* ULT GT1 server */
375 INTEL_VGA_DEVICE(0x0A1A, &intel_haswell_d_info
), /* ULT GT2 server */
376 INTEL_VGA_DEVICE(0x0A2A, &intel_haswell_d_info
), /* ULT GT2 server */
377 INTEL_VGA_DEVICE(0x0A06, &intel_haswell_m_info
), /* ULT GT1 mobile */
378 INTEL_VGA_DEVICE(0x0A16, &intel_haswell_m_info
), /* ULT GT2 mobile */
379 INTEL_VGA_DEVICE(0x0A26, &intel_haswell_m_info
), /* ULT GT2 mobile */
380 INTEL_VGA_DEVICE(0x0D12, &intel_haswell_d_info
), /* CRW GT1 desktop */
381 INTEL_VGA_DEVICE(0x0D22, &intel_haswell_d_info
), /* CRW GT2 desktop */
382 INTEL_VGA_DEVICE(0x0D32, &intel_haswell_d_info
), /* CRW GT2 desktop */
383 INTEL_VGA_DEVICE(0x0D1A, &intel_haswell_d_info
), /* CRW GT1 server */
384 INTEL_VGA_DEVICE(0x0D2A, &intel_haswell_d_info
), /* CRW GT2 server */
385 INTEL_VGA_DEVICE(0x0D3A, &intel_haswell_d_info
), /* CRW GT2 server */
386 INTEL_VGA_DEVICE(0x0D16, &intel_haswell_m_info
), /* CRW GT1 mobile */
387 INTEL_VGA_DEVICE(0x0D26, &intel_haswell_m_info
), /* CRW GT2 mobile */
388 INTEL_VGA_DEVICE(0x0D36, &intel_haswell_m_info
), /* CRW GT2 mobile */
389 INTEL_VGA_DEVICE(0x0f30, &intel_valleyview_m_info
),
390 INTEL_VGA_DEVICE(0x0157, &intel_valleyview_m_info
),
391 INTEL_VGA_DEVICE(0x0155, &intel_valleyview_d_info
),
395 #if defined(CONFIG_DRM_I915_KMS)
396 MODULE_DEVICE_TABLE(pci
, pciidlist
);
399 void intel_detect_pch(struct drm_device
*dev
)
401 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
405 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
406 * make graphics device passthrough work easy for VMM, that only
407 * need to expose ISA bridge to let driver know the real hardware
408 * underneath. This is a requirement from virtualization team.
410 pch
= pci_get_class(PCI_CLASS_BRIDGE_ISA
<< 8, NULL
);
412 if (pch
->vendor
== PCI_VENDOR_ID_INTEL
) {
414 id
= pch
->device
& INTEL_PCH_DEVICE_ID_MASK
;
415 dev_priv
->pch_id
= id
;
417 if (id
== INTEL_PCH_IBX_DEVICE_ID_TYPE
) {
418 dev_priv
->pch_type
= PCH_IBX
;
419 dev_priv
->num_pch_pll
= 2;
420 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
421 WARN_ON(!IS_GEN5(dev
));
422 } else if (id
== INTEL_PCH_CPT_DEVICE_ID_TYPE
) {
423 dev_priv
->pch_type
= PCH_CPT
;
424 dev_priv
->num_pch_pll
= 2;
425 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
426 WARN_ON(!(IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)));
427 } else if (id
== INTEL_PCH_PPT_DEVICE_ID_TYPE
) {
428 /* PantherPoint is CPT compatible */
429 dev_priv
->pch_type
= PCH_CPT
;
430 dev_priv
->num_pch_pll
= 2;
431 DRM_DEBUG_KMS("Found PatherPoint PCH\n");
432 WARN_ON(!(IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)));
433 } else if (id
== INTEL_PCH_LPT_DEVICE_ID_TYPE
) {
434 dev_priv
->pch_type
= PCH_LPT
;
435 dev_priv
->num_pch_pll
= 0;
436 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
437 WARN_ON(!IS_HASWELL(dev
));
438 } else if (id
== INTEL_PCH_LPT_LP_DEVICE_ID_TYPE
) {
439 dev_priv
->pch_type
= PCH_LPT
;
440 dev_priv
->num_pch_pll
= 0;
441 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
442 WARN_ON(!IS_HASWELL(dev
));
444 BUG_ON(dev_priv
->num_pch_pll
> I915_NUM_PLLS
);
450 bool i915_semaphore_is_enabled(struct drm_device
*dev
)
452 if (INTEL_INFO(dev
)->gen
< 6)
455 if (i915_semaphores
>= 0)
456 return i915_semaphores
;
458 #ifdef CONFIG_INTEL_IOMMU
459 /* Enable semaphores on SNB when IO remapping is off */
460 if (INTEL_INFO(dev
)->gen
== 6 && intel_iommu_gfx_mapped
)
467 static int i915_drm_freeze(struct drm_device
*dev
)
469 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
471 drm_kms_helper_poll_disable(dev
);
473 pci_save_state(dev
->pdev
);
475 /* If KMS is active, we do the leavevt stuff here */
476 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
477 int error
= i915_gem_idle(dev
);
479 dev_err(&dev
->pdev
->dev
,
480 "GEM idle failed, resume might fail\n");
484 cancel_delayed_work_sync(&dev_priv
->rps
.delayed_resume_work
);
486 intel_modeset_disable(dev
);
488 drm_irq_uninstall(dev
);
491 i915_save_state(dev
);
493 intel_opregion_fini(dev
);
495 /* Modeset on resume, not lid events */
496 dev_priv
->modeset_on_lid
= 0;
499 intel_fbdev_set_suspend(dev
, 1);
505 int i915_suspend(struct drm_device
*dev
, pm_message_t state
)
509 if (!dev
|| !dev
->dev_private
) {
510 DRM_ERROR("dev: %p\n", dev
);
511 DRM_ERROR("DRM not initialized, aborting suspend.\n");
515 if (state
.event
== PM_EVENT_PRETHAW
)
519 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
522 error
= i915_drm_freeze(dev
);
526 if (state
.event
== PM_EVENT_SUSPEND
) {
527 /* Shut down the device */
528 pci_disable_device(dev
->pdev
);
529 pci_set_power_state(dev
->pdev
, PCI_D3hot
);
535 void intel_console_resume(struct work_struct
*work
)
537 struct drm_i915_private
*dev_priv
=
538 container_of(work
, struct drm_i915_private
,
539 console_resume_work
);
540 struct drm_device
*dev
= dev_priv
->dev
;
543 intel_fbdev_set_suspend(dev
, 0);
547 static int __i915_drm_thaw(struct drm_device
*dev
)
549 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
552 i915_restore_state(dev
);
553 intel_opregion_setup(dev
);
555 /* KMS EnterVT equivalent */
556 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
557 if (HAS_PCH_IBX(dev
) || HAS_PCH_CPT(dev
))
558 ironlake_init_pch_refclk(dev
);
560 mutex_lock(&dev
->struct_mutex
);
561 dev_priv
->mm
.suspended
= 0;
563 error
= i915_gem_init_hw(dev
);
564 mutex_unlock(&dev
->struct_mutex
);
566 intel_modeset_init_hw(dev
);
567 intel_modeset_setup_hw_state(dev
, false);
568 drm_irq_install(dev
);
571 intel_opregion_init(dev
);
573 dev_priv
->modeset_on_lid
= 0;
576 * The console lock can be pretty contented on resume due
577 * to all the printk activity. Try to keep it out of the hot
578 * path of resume if possible.
580 if (console_trylock()) {
581 intel_fbdev_set_suspend(dev
, 0);
584 schedule_work(&dev_priv
->console_resume_work
);
590 static int i915_drm_thaw(struct drm_device
*dev
)
596 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
597 mutex_lock(&dev
->struct_mutex
);
598 i915_gem_restore_gtt_mappings(dev
);
599 mutex_unlock(&dev
->struct_mutex
);
602 __i915_drm_thaw(dev
);
607 int i915_resume(struct drm_device
*dev
)
609 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
612 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
615 if (pci_enable_device(dev
->pdev
))
618 pci_set_master(dev
->pdev
);
623 * Platforms with opregion should have sane BIOS, older ones (gen3 and
624 * earlier) need this since the BIOS might clear all our scratch PTEs.
626 if (drm_core_check_feature(dev
, DRIVER_MODESET
) &&
627 !dev_priv
->opregion
.header
) {
628 mutex_lock(&dev
->struct_mutex
);
629 i915_gem_restore_gtt_mappings(dev
);
630 mutex_unlock(&dev
->struct_mutex
);
633 ret
= __i915_drm_thaw(dev
);
637 drm_kms_helper_poll_enable(dev
);
641 static int i8xx_do_reset(struct drm_device
*dev
)
643 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
648 I915_WRITE(D_STATE
, I915_READ(D_STATE
) | DSTATE_GFX_RESET_I830
);
649 POSTING_READ(D_STATE
);
651 if (IS_I830(dev
) || IS_845G(dev
)) {
652 I915_WRITE(DEBUG_RESET_I830
,
653 DEBUG_RESET_DISPLAY
|
656 POSTING_READ(DEBUG_RESET_I830
);
659 I915_WRITE(DEBUG_RESET_I830
, 0);
660 POSTING_READ(DEBUG_RESET_I830
);
665 I915_WRITE(D_STATE
, I915_READ(D_STATE
) & ~DSTATE_GFX_RESET_I830
);
666 POSTING_READ(D_STATE
);
671 static int i965_reset_complete(struct drm_device
*dev
)
674 pci_read_config_byte(dev
->pdev
, I965_GDRST
, &gdrst
);
675 return (gdrst
& GRDOM_RESET_ENABLE
) == 0;
678 static int i965_do_reset(struct drm_device
*dev
)
684 * Set the domains we want to reset (GRDOM/bits 2 and 3) as
685 * well as the reset bit (GR/bit 0). Setting the GR bit
686 * triggers the reset; when done, the hardware will clear it.
688 pci_read_config_byte(dev
->pdev
, I965_GDRST
, &gdrst
);
689 pci_write_config_byte(dev
->pdev
, I965_GDRST
,
690 gdrst
| GRDOM_RENDER
|
692 ret
= wait_for(i965_reset_complete(dev
), 500);
696 /* We can't reset render&media without also resetting display ... */
697 pci_read_config_byte(dev
->pdev
, I965_GDRST
, &gdrst
);
698 pci_write_config_byte(dev
->pdev
, I965_GDRST
,
699 gdrst
| GRDOM_MEDIA
|
702 return wait_for(i965_reset_complete(dev
), 500);
705 static int ironlake_do_reset(struct drm_device
*dev
)
707 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
711 gdrst
= I915_READ(MCHBAR_MIRROR_BASE
+ ILK_GDSR
);
712 I915_WRITE(MCHBAR_MIRROR_BASE
+ ILK_GDSR
,
713 gdrst
| GRDOM_RENDER
| GRDOM_RESET_ENABLE
);
714 ret
= wait_for(I915_READ(MCHBAR_MIRROR_BASE
+ ILK_GDSR
) & 0x1, 500);
718 /* We can't reset render&media without also resetting display ... */
719 gdrst
= I915_READ(MCHBAR_MIRROR_BASE
+ ILK_GDSR
);
720 I915_WRITE(MCHBAR_MIRROR_BASE
+ ILK_GDSR
,
721 gdrst
| GRDOM_MEDIA
| GRDOM_RESET_ENABLE
);
722 return wait_for(I915_READ(MCHBAR_MIRROR_BASE
+ ILK_GDSR
) & 0x1, 500);
725 static int gen6_do_reset(struct drm_device
*dev
)
727 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
729 unsigned long irqflags
;
731 /* Hold gt_lock across reset to prevent any register access
732 * with forcewake not set correctly
734 spin_lock_irqsave(&dev_priv
->gt_lock
, irqflags
);
738 /* GEN6_GDRST is not in the gt power well, no need to check
739 * for fifo space for the write or forcewake the chip for
742 I915_WRITE_NOTRACE(GEN6_GDRST
, GEN6_GRDOM_FULL
);
744 /* Spin waiting for the device to ack the reset request */
745 ret
= wait_for((I915_READ_NOTRACE(GEN6_GDRST
) & GEN6_GRDOM_FULL
) == 0, 500);
747 /* If reset with a user forcewake, try to restore, otherwise turn it off */
748 if (dev_priv
->forcewake_count
)
749 dev_priv
->gt
.force_wake_get(dev_priv
);
751 dev_priv
->gt
.force_wake_put(dev_priv
);
753 /* Restore fifo count */
754 dev_priv
->gt_fifo_count
= I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES
);
756 spin_unlock_irqrestore(&dev_priv
->gt_lock
, irqflags
);
760 int intel_gpu_reset(struct drm_device
*dev
)
762 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
765 switch (INTEL_INFO(dev
)->gen
) {
768 ret
= gen6_do_reset(dev
);
771 ret
= ironlake_do_reset(dev
);
774 ret
= i965_do_reset(dev
);
777 ret
= i8xx_do_reset(dev
);
781 /* Also reset the gpu hangman. */
782 if (dev_priv
->stop_rings
) {
783 DRM_DEBUG("Simulated gpu hang, resetting stop_rings\n");
784 dev_priv
->stop_rings
= 0;
785 if (ret
== -ENODEV
) {
786 DRM_ERROR("Reset not implemented, but ignoring "
787 "error for simulated gpu hangs\n");
796 * i915_reset - reset chip after a hang
797 * @dev: drm device to reset
799 * Reset the chip. Useful if a hang is detected. Returns zero on successful
800 * reset or otherwise an error code.
802 * Procedure is fairly simple:
803 * - reset the chip using the reset reg
804 * - re-init context state
805 * - re-init hardware status page
806 * - re-init ring buffer
807 * - re-init interrupt state
810 int i915_reset(struct drm_device
*dev
)
812 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
818 mutex_lock(&dev
->struct_mutex
);
823 if (get_seconds() - dev_priv
->last_gpu_reset
< 5)
824 DRM_ERROR("GPU hanging too fast, declaring wedged!\n");
826 ret
= intel_gpu_reset(dev
);
828 dev_priv
->last_gpu_reset
= get_seconds();
830 DRM_ERROR("Failed to reset chip.\n");
831 mutex_unlock(&dev
->struct_mutex
);
835 /* Ok, now get things going again... */
838 * Everything depends on having the GTT running, so we need to start
839 * there. Fortunately we don't need to do this unless we reset the
840 * chip at a PCI level.
842 * Next we need to restore the context, but we don't use those
845 * Ring buffer needs to be re-initialized in the KMS case, or if X
846 * was running at the time of the reset (i.e. we weren't VT
849 if (drm_core_check_feature(dev
, DRIVER_MODESET
) ||
850 !dev_priv
->mm
.suspended
) {
851 struct intel_ring_buffer
*ring
;
854 dev_priv
->mm
.suspended
= 0;
856 i915_gem_init_swizzling(dev
);
858 for_each_ring(ring
, dev_priv
, i
)
861 i915_gem_context_init(dev
);
862 i915_gem_init_ppgtt(dev
);
865 * It would make sense to re-init all the other hw state, at
866 * least the rps/rc6/emon init done within modeset_init_hw. For
867 * some unknown reason, this blows up my ilk, so don't.
870 mutex_unlock(&dev
->struct_mutex
);
872 drm_irq_uninstall(dev
);
873 drm_irq_install(dev
);
875 mutex_unlock(&dev
->struct_mutex
);
882 i915_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
884 struct intel_device_info
*intel_info
=
885 (struct intel_device_info
*) ent
->driver_data
;
887 if (intel_info
->is_valleyview
)
888 if(!i915_preliminary_hw_support
) {
889 DRM_ERROR("Preliminary hardware support disabled\n");
893 /* Only bind to function 0 of the device. Early generations
894 * used function 1 as a placeholder for multi-head. This causes
895 * us confusion instead, especially on the systems where both
896 * functions have the same PCI-ID!
898 if (PCI_FUNC(pdev
->devfn
))
901 /* We've managed to ship a kms-enabled ddx that shipped with an XvMC
902 * implementation for gen3 (and only gen3) that used legacy drm maps
903 * (gasp!) to share buffers between X and the client. Hence we need to
904 * keep around the fake agp stuff for gen3, even when kms is enabled. */
905 if (intel_info
->gen
!= 3) {
906 driver
.driver_features
&=
907 ~(DRIVER_USE_AGP
| DRIVER_REQUIRE_AGP
);
908 } else if (!intel_agp_enabled
) {
909 DRM_ERROR("drm/i915 can't work without intel_agp module!\n");
913 return drm_get_pci_dev(pdev
, ent
, &driver
);
917 i915_pci_remove(struct pci_dev
*pdev
)
919 struct drm_device
*dev
= pci_get_drvdata(pdev
);
924 static int i915_pm_suspend(struct device
*dev
)
926 struct pci_dev
*pdev
= to_pci_dev(dev
);
927 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
930 if (!drm_dev
|| !drm_dev
->dev_private
) {
931 dev_err(dev
, "DRM not initialized, aborting suspend.\n");
935 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
938 error
= i915_drm_freeze(drm_dev
);
942 pci_disable_device(pdev
);
943 pci_set_power_state(pdev
, PCI_D3hot
);
948 static int i915_pm_resume(struct device
*dev
)
950 struct pci_dev
*pdev
= to_pci_dev(dev
);
951 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
953 return i915_resume(drm_dev
);
956 static int i915_pm_freeze(struct device
*dev
)
958 struct pci_dev
*pdev
= to_pci_dev(dev
);
959 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
961 if (!drm_dev
|| !drm_dev
->dev_private
) {
962 dev_err(dev
, "DRM not initialized, aborting suspend.\n");
966 return i915_drm_freeze(drm_dev
);
969 static int i915_pm_thaw(struct device
*dev
)
971 struct pci_dev
*pdev
= to_pci_dev(dev
);
972 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
974 return i915_drm_thaw(drm_dev
);
977 static int i915_pm_poweroff(struct device
*dev
)
979 struct pci_dev
*pdev
= to_pci_dev(dev
);
980 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
982 return i915_drm_freeze(drm_dev
);
985 static const struct dev_pm_ops i915_pm_ops
= {
986 .suspend
= i915_pm_suspend
,
987 .resume
= i915_pm_resume
,
988 .freeze
= i915_pm_freeze
,
989 .thaw
= i915_pm_thaw
,
990 .poweroff
= i915_pm_poweroff
,
991 .restore
= i915_pm_resume
,
994 static const struct vm_operations_struct i915_gem_vm_ops
= {
995 .fault
= i915_gem_fault
,
996 .open
= drm_gem_vm_open
,
997 .close
= drm_gem_vm_close
,
1000 static const struct file_operations i915_driver_fops
= {
1001 .owner
= THIS_MODULE
,
1003 .release
= drm_release
,
1004 .unlocked_ioctl
= drm_ioctl
,
1005 .mmap
= drm_gem_mmap
,
1007 .fasync
= drm_fasync
,
1009 #ifdef CONFIG_COMPAT
1010 .compat_ioctl
= i915_compat_ioctl
,
1012 .llseek
= noop_llseek
,
1015 static struct drm_driver driver
= {
1016 /* Don't use MTRRs here; the Xserver or userspace app should
1017 * deal with them for Intel hardware.
1020 DRIVER_USE_AGP
| DRIVER_REQUIRE_AGP
| /* DRIVER_USE_MTRR |*/
1021 DRIVER_HAVE_IRQ
| DRIVER_IRQ_SHARED
| DRIVER_GEM
| DRIVER_PRIME
,
1022 .load
= i915_driver_load
,
1023 .unload
= i915_driver_unload
,
1024 .open
= i915_driver_open
,
1025 .lastclose
= i915_driver_lastclose
,
1026 .preclose
= i915_driver_preclose
,
1027 .postclose
= i915_driver_postclose
,
1029 /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
1030 .suspend
= i915_suspend
,
1031 .resume
= i915_resume
,
1033 .device_is_agp
= i915_driver_device_is_agp
,
1034 .master_create
= i915_master_create
,
1035 .master_destroy
= i915_master_destroy
,
1036 #if defined(CONFIG_DEBUG_FS)
1037 .debugfs_init
= i915_debugfs_init
,
1038 .debugfs_cleanup
= i915_debugfs_cleanup
,
1040 .gem_init_object
= i915_gem_init_object
,
1041 .gem_free_object
= i915_gem_free_object
,
1042 .gem_vm_ops
= &i915_gem_vm_ops
,
1044 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
1045 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
1046 .gem_prime_export
= i915_gem_prime_export
,
1047 .gem_prime_import
= i915_gem_prime_import
,
1049 .dumb_create
= i915_gem_dumb_create
,
1050 .dumb_map_offset
= i915_gem_mmap_gtt
,
1051 .dumb_destroy
= i915_gem_dumb_destroy
,
1052 .ioctls
= i915_ioctls
,
1053 .fops
= &i915_driver_fops
,
1054 .name
= DRIVER_NAME
,
1055 .desc
= DRIVER_DESC
,
1056 .date
= DRIVER_DATE
,
1057 .major
= DRIVER_MAJOR
,
1058 .minor
= DRIVER_MINOR
,
1059 .patchlevel
= DRIVER_PATCHLEVEL
,
1062 static struct pci_driver i915_pci_driver
= {
1063 .name
= DRIVER_NAME
,
1064 .id_table
= pciidlist
,
1065 .probe
= i915_pci_probe
,
1066 .remove
= i915_pci_remove
,
1067 .driver
.pm
= &i915_pm_ops
,
1070 static int __init
i915_init(void)
1072 driver
.num_ioctls
= i915_max_ioctl
;
1075 * If CONFIG_DRM_I915_KMS is set, default to KMS unless
1076 * explicitly disabled with the module pararmeter.
1078 * Otherwise, just follow the parameter (defaulting to off).
1080 * Allow optional vga_text_mode_force boot option to override
1081 * the default behavior.
1083 #if defined(CONFIG_DRM_I915_KMS)
1084 if (i915_modeset
!= 0)
1085 driver
.driver_features
|= DRIVER_MODESET
;
1087 if (i915_modeset
== 1)
1088 driver
.driver_features
|= DRIVER_MODESET
;
1090 #ifdef CONFIG_VGA_CONSOLE
1091 if (vgacon_text_force() && i915_modeset
== -1)
1092 driver
.driver_features
&= ~DRIVER_MODESET
;
1095 if (!(driver
.driver_features
& DRIVER_MODESET
))
1096 driver
.get_vblank_timestamp
= NULL
;
1098 return drm_pci_init(&driver
, &i915_pci_driver
);
1101 static void __exit
i915_exit(void)
1103 drm_pci_exit(&driver
, &i915_pci_driver
);
1106 module_init(i915_init
);
1107 module_exit(i915_exit
);
1109 MODULE_AUTHOR(DRIVER_AUTHOR
);
1110 MODULE_DESCRIPTION(DRIVER_DESC
);
1111 MODULE_LICENSE("GPL and additional rights");
1113 /* We give fast paths for the really cool registers */
1114 #define NEEDS_FORCE_WAKE(dev_priv, reg) \
1115 ((HAS_FORCE_WAKE((dev_priv)->dev)) && \
1116 ((reg) < 0x40000) && \
1117 ((reg) != FORCEWAKE))
1119 static bool IS_DISPLAYREG(u32 reg
)
1122 * This should make it easier to transition modules over to the
1123 * new register block scheme, since we can do it incrementally.
1125 if (reg
>= VLV_DISPLAY_BASE
)
1128 if (reg
>= RENDER_RING_BASE
&&
1129 reg
< RENDER_RING_BASE
+ 0xff)
1131 if (reg
>= GEN6_BSD_RING_BASE
&&
1132 reg
< GEN6_BSD_RING_BASE
+ 0xff)
1134 if (reg
>= BLT_RING_BASE
&&
1135 reg
< BLT_RING_BASE
+ 0xff)
1138 if (reg
== PGTBL_ER
)
1141 if (reg
>= IPEIR_I965
&&
1148 if (reg
== GFX_MODE_GEN7
)
1151 if (reg
== RENDER_HWS_PGA_GEN7
||
1152 reg
== BSD_HWS_PGA_GEN7
||
1153 reg
== BLT_HWS_PGA_GEN7
)
1156 if (reg
== GEN6_BSD_SLEEP_PSMI_CONTROL
||
1157 reg
== GEN6_BSD_RNCID
)
1160 if (reg
== GEN6_BLITTER_ECOSKPD
)
1163 if (reg
>= 0x4000c &&
1167 if (reg
>= 0x4f000 &&
1171 if (reg
>= 0x4f100 &&
1175 if (reg
>= VLV_MASTER_IER
&&
1179 if (reg
>= FENCE_REG_SANDYBRIDGE_0
&&
1180 reg
< (FENCE_REG_SANDYBRIDGE_0
+ (16*8)))
1183 if (reg
>= VLV_IIR_RW
&&
1187 if (reg
== FORCEWAKE_VLV
||
1188 reg
== FORCEWAKE_ACK_VLV
)
1191 if (reg
== GEN6_GDRST
)
1197 case GEN7_COMMON_SLICE_CHICKEN1
:
1198 case GEN7_L3CNTLREG1
:
1199 case GEN7_L3_CHICKEN_MODE_REGISTER
:
1200 case GEN7_ROW_CHICKEN2
:
1201 case GEN7_L3SQCREG4
:
1202 case GEN7_SQ_CHICKEN_MBCUNIT_CONFIG
:
1203 case GEN7_HALF_SLICE_CHICKEN1
:
1215 ilk_dummy_write(struct drm_i915_private
*dev_priv
)
1217 /* WaIssueDummyWriteToWakeupFromRC6: Issue a dummy write to wake up the
1218 * chip from rc6 before touching it for real. MI_MODE is masked, hence
1219 * harmless to write 0 into. */
1220 I915_WRITE_NOTRACE(MI_MODE
, 0);
1223 #define __i915_read(x, y) \
1224 u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \
1226 if (IS_GEN5(dev_priv->dev)) \
1227 ilk_dummy_write(dev_priv); \
1228 if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
1229 unsigned long irqflags; \
1230 spin_lock_irqsave(&dev_priv->gt_lock, irqflags); \
1231 if (dev_priv->forcewake_count == 0) \
1232 dev_priv->gt.force_wake_get(dev_priv); \
1233 val = read##y(dev_priv->regs + reg); \
1234 if (dev_priv->forcewake_count == 0) \
1235 dev_priv->gt.force_wake_put(dev_priv); \
1236 spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); \
1237 } else if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \
1238 val = read##y(dev_priv->regs + reg + 0x180000); \
1240 val = read##y(dev_priv->regs + reg); \
1242 trace_i915_reg_rw(false, reg, val, sizeof(val)); \
1252 #define __i915_write(x, y) \
1253 void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \
1254 u32 __fifo_ret = 0; \
1255 trace_i915_reg_rw(true, reg, val, sizeof(val)); \
1256 if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
1257 __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \
1259 if (IS_GEN5(dev_priv->dev)) \
1260 ilk_dummy_write(dev_priv); \
1261 if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \
1262 DRM_ERROR("Unknown unclaimed register before writing to %x\n", reg); \
1263 I915_WRITE_NOTRACE(GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED); \
1265 if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \
1266 write##y(val, dev_priv->regs + reg + 0x180000); \
1268 write##y(val, dev_priv->regs + reg); \
1270 if (unlikely(__fifo_ret)) { \
1271 gen6_gt_check_fifodbg(dev_priv); \
1273 if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \
1274 DRM_ERROR("Unclaimed write to %x\n", reg); \
1275 writel(ERR_INT_MMIO_UNCLAIMED, dev_priv->regs + GEN7_ERR_INT); \
1284 static const struct register_whitelist
{
1287 uint32_t gen_bitmask
; /* support gens, 0x10 for 4, 0x30 for 4 and 5, etc. */
1289 { RING_TIMESTAMP(RENDER_RING_BASE
), 8, 0xF0 },
1292 int i915_reg_read_ioctl(struct drm_device
*dev
,
1293 void *data
, struct drm_file
*file
)
1295 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1296 struct drm_i915_reg_read
*reg
= data
;
1297 struct register_whitelist
const *entry
= whitelist
;
1300 for (i
= 0; i
< ARRAY_SIZE(whitelist
); i
++, entry
++) {
1301 if (entry
->offset
== reg
->offset
&&
1302 (1 << INTEL_INFO(dev
)->gen
& entry
->gen_bitmask
))
1306 if (i
== ARRAY_SIZE(whitelist
))
1309 switch (entry
->size
) {
1311 reg
->val
= I915_READ64(reg
->offset
);
1314 reg
->val
= I915_READ(reg
->offset
);
1317 reg
->val
= I915_READ16(reg
->offset
);
1320 reg
->val
= I915_READ8(reg
->offset
);