]>
Commit | Line | Data |
---|---|---|
1 | /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*- | |
2 | */ | |
3 | /* | |
4 | * | |
5 | * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. | |
6 | * All Rights Reserved. | |
7 | * | |
8 | * Permission is hereby granted, free of charge, to any person obtaining a | |
9 | * copy of this software and associated documentation files (the | |
10 | * "Software"), to deal in the Software without restriction, including | |
11 | * without limitation the rights to use, copy, modify, merge, publish, | |
12 | * distribute, sub license, and/or sell copies of the Software, and to | |
13 | * permit persons to whom the Software is furnished to do so, subject to | |
14 | * the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice (including the | |
17 | * next paragraph) shall be included in all copies or substantial portions | |
18 | * of the Software. | |
19 | * | |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
21 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
22 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. | |
23 | * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR | |
24 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | |
25 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | |
26 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
27 | * | |
28 | */ | |
29 | ||
30 | #include <linux/device.h> | |
31 | #include <drm/drmP.h> | |
32 | #include <drm/i915_drm.h> | |
33 | #include "i915_drv.h" | |
34 | #include "i915_trace.h" | |
35 | #include "intel_drv.h" | |
36 | ||
37 | #include <linux/console.h> | |
38 | #include <linux/module.h> | |
39 | #include <drm/drm_crtc_helper.h> | |
40 | ||
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])"); | |
46 | ||
47 | unsigned int i915_fbpercrtc __always_unused = 0; | |
48 | module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400); | |
49 | ||
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)"); | |
55 | ||
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)"); | |
60 | ||
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))"); | |
65 | ||
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)"); | |
74 | ||
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))"); | |
80 | ||
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 " | |
85 | "(default: false)"); | |
86 | ||
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)"); | |
92 | ||
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)"); | |
98 | ||
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)"); | |
104 | ||
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)"); | |
108 | ||
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. " | |
114 | "(default: true)"); | |
115 | ||
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)"); | |
120 | ||
121 | int i915_enable_psr __read_mostly = 0; | |
122 | module_param_named(enable_psr, i915_enable_psr, int, 0600); | |
123 | MODULE_PARM_DESC(enable_psr, "Enable PSR (default: false)"); | |
124 | ||
125 | unsigned int i915_preliminary_hw_support __read_mostly = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT); | |
126 | module_param_named(preliminary_hw_support, i915_preliminary_hw_support, int, 0600); | |
127 | MODULE_PARM_DESC(preliminary_hw_support, | |
128 | "Enable preliminary hardware support."); | |
129 | ||
130 | int i915_disable_power_well __read_mostly = 1; | |
131 | module_param_named(disable_power_well, i915_disable_power_well, int, 0600); | |
132 | MODULE_PARM_DESC(disable_power_well, | |
133 | "Disable the power well when possible (default: true)"); | |
134 | ||
135 | int i915_enable_ips __read_mostly = 1; | |
136 | module_param_named(enable_ips, i915_enable_ips, int, 0600); | |
137 | MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)"); | |
138 | ||
139 | bool i915_fastboot __read_mostly = 0; | |
140 | module_param_named(fastboot, i915_fastboot, bool, 0600); | |
141 | MODULE_PARM_DESC(fastboot, "Try to skip unnecessary mode sets at boot time " | |
142 | "(default: false)"); | |
143 | ||
144 | int i915_enable_pc8 __read_mostly = 1; | |
145 | module_param_named(enable_pc8, i915_enable_pc8, int, 0600); | |
146 | MODULE_PARM_DESC(enable_pc8, "Enable support for low power package C states (PC8+) (default: true)"); | |
147 | ||
148 | int i915_pc8_timeout __read_mostly = 5000; | |
149 | module_param_named(pc8_timeout, i915_pc8_timeout, int, 0600); | |
150 | MODULE_PARM_DESC(pc8_timeout, "Number of msecs of idleness required to enter PC8+ (default: 5000)"); | |
151 | ||
152 | bool i915_prefault_disable __read_mostly; | |
153 | module_param_named(prefault_disable, i915_prefault_disable, bool, 0600); | |
154 | MODULE_PARM_DESC(prefault_disable, | |
155 | "Disable page prefaulting for pread/pwrite/reloc (default:false). For developers only."); | |
156 | ||
157 | static struct drm_driver driver; | |
158 | #if IS_ENABLED(CONFIG_AGP_INTEL) | |
159 | extern int intel_agp_enabled; | |
160 | #else | |
161 | static int intel_agp_enabled; | |
162 | #endif | |
163 | ||
164 | static const struct intel_device_info intel_i830_info = { | |
165 | .gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, .num_pipes = 2, | |
166 | .has_overlay = 1, .overlay_needs_physical = 1, | |
167 | .ring_mask = RENDER_RING, | |
168 | }; | |
169 | ||
170 | static const struct intel_device_info intel_845g_info = { | |
171 | .gen = 2, .num_pipes = 1, | |
172 | .has_overlay = 1, .overlay_needs_physical = 1, | |
173 | .ring_mask = RENDER_RING, | |
174 | }; | |
175 | ||
176 | static const struct intel_device_info intel_i85x_info = { | |
177 | .gen = 2, .is_i85x = 1, .is_mobile = 1, .num_pipes = 2, | |
178 | .cursor_needs_physical = 1, | |
179 | .has_overlay = 1, .overlay_needs_physical = 1, | |
180 | .ring_mask = RENDER_RING, | |
181 | }; | |
182 | ||
183 | static const struct intel_device_info intel_i865g_info = { | |
184 | .gen = 2, .num_pipes = 1, | |
185 | .has_overlay = 1, .overlay_needs_physical = 1, | |
186 | .ring_mask = RENDER_RING, | |
187 | }; | |
188 | ||
189 | static const struct intel_device_info intel_i915g_info = { | |
190 | .gen = 3, .is_i915g = 1, .cursor_needs_physical = 1, .num_pipes = 2, | |
191 | .has_overlay = 1, .overlay_needs_physical = 1, | |
192 | .ring_mask = RENDER_RING, | |
193 | }; | |
194 | static const struct intel_device_info intel_i915gm_info = { | |
195 | .gen = 3, .is_mobile = 1, .num_pipes = 2, | |
196 | .cursor_needs_physical = 1, | |
197 | .has_overlay = 1, .overlay_needs_physical = 1, | |
198 | .supports_tv = 1, | |
199 | .ring_mask = RENDER_RING, | |
200 | }; | |
201 | static const struct intel_device_info intel_i945g_info = { | |
202 | .gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1, .num_pipes = 2, | |
203 | .has_overlay = 1, .overlay_needs_physical = 1, | |
204 | .ring_mask = RENDER_RING, | |
205 | }; | |
206 | static const struct intel_device_info intel_i945gm_info = { | |
207 | .gen = 3, .is_i945gm = 1, .is_mobile = 1, .num_pipes = 2, | |
208 | .has_hotplug = 1, .cursor_needs_physical = 1, | |
209 | .has_overlay = 1, .overlay_needs_physical = 1, | |
210 | .supports_tv = 1, | |
211 | .ring_mask = RENDER_RING, | |
212 | }; | |
213 | ||
214 | static const struct intel_device_info intel_i965g_info = { | |
215 | .gen = 4, .is_broadwater = 1, .num_pipes = 2, | |
216 | .has_hotplug = 1, | |
217 | .has_overlay = 1, | |
218 | .ring_mask = RENDER_RING, | |
219 | }; | |
220 | ||
221 | static const struct intel_device_info intel_i965gm_info = { | |
222 | .gen = 4, .is_crestline = 1, .num_pipes = 2, | |
223 | .is_mobile = 1, .has_fbc = 1, .has_hotplug = 1, | |
224 | .has_overlay = 1, | |
225 | .supports_tv = 1, | |
226 | .ring_mask = RENDER_RING, | |
227 | }; | |
228 | ||
229 | static const struct intel_device_info intel_g33_info = { | |
230 | .gen = 3, .is_g33 = 1, .num_pipes = 2, | |
231 | .need_gfx_hws = 1, .has_hotplug = 1, | |
232 | .has_overlay = 1, | |
233 | .ring_mask = RENDER_RING, | |
234 | }; | |
235 | ||
236 | static const struct intel_device_info intel_g45_info = { | |
237 | .gen = 4, .is_g4x = 1, .need_gfx_hws = 1, .num_pipes = 2, | |
238 | .has_pipe_cxsr = 1, .has_hotplug = 1, | |
239 | .ring_mask = RENDER_RING | BSD_RING, | |
240 | }; | |
241 | ||
242 | static const struct intel_device_info intel_gm45_info = { | |
243 | .gen = 4, .is_g4x = 1, .num_pipes = 2, | |
244 | .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, | |
245 | .has_pipe_cxsr = 1, .has_hotplug = 1, | |
246 | .supports_tv = 1, | |
247 | .ring_mask = RENDER_RING | BSD_RING, | |
248 | }; | |
249 | ||
250 | static const struct intel_device_info intel_pineview_info = { | |
251 | .gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .num_pipes = 2, | |
252 | .need_gfx_hws = 1, .has_hotplug = 1, | |
253 | .has_overlay = 1, | |
254 | }; | |
255 | ||
256 | static const struct intel_device_info intel_ironlake_d_info = { | |
257 | .gen = 5, .num_pipes = 2, | |
258 | .need_gfx_hws = 1, .has_hotplug = 1, | |
259 | .ring_mask = RENDER_RING | BSD_RING, | |
260 | }; | |
261 | ||
262 | static const struct intel_device_info intel_ironlake_m_info = { | |
263 | .gen = 5, .is_mobile = 1, .num_pipes = 2, | |
264 | .need_gfx_hws = 1, .has_hotplug = 1, | |
265 | .has_fbc = 1, | |
266 | .ring_mask = RENDER_RING | BSD_RING, | |
267 | }; | |
268 | ||
269 | static const struct intel_device_info intel_sandybridge_d_info = { | |
270 | .gen = 6, .num_pipes = 2, | |
271 | .need_gfx_hws = 1, .has_hotplug = 1, | |
272 | .ring_mask = RENDER_RING | BSD_RING | BLT_RING, | |
273 | .has_llc = 1, | |
274 | }; | |
275 | ||
276 | static const struct intel_device_info intel_sandybridge_m_info = { | |
277 | .gen = 6, .is_mobile = 1, .num_pipes = 2, | |
278 | .need_gfx_hws = 1, .has_hotplug = 1, | |
279 | .has_fbc = 1, | |
280 | .ring_mask = RENDER_RING | BSD_RING | BLT_RING, | |
281 | .has_llc = 1, | |
282 | }; | |
283 | ||
284 | #define GEN7_FEATURES \ | |
285 | .gen = 7, .num_pipes = 3, \ | |
286 | .need_gfx_hws = 1, .has_hotplug = 1, \ | |
287 | .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \ | |
288 | .has_llc = 1 | |
289 | ||
290 | static const struct intel_device_info intel_ivybridge_d_info = { | |
291 | GEN7_FEATURES, | |
292 | .is_ivybridge = 1, | |
293 | }; | |
294 | ||
295 | static const struct intel_device_info intel_ivybridge_m_info = { | |
296 | GEN7_FEATURES, | |
297 | .is_ivybridge = 1, | |
298 | .is_mobile = 1, | |
299 | .has_fbc = 1, | |
300 | }; | |
301 | ||
302 | static const struct intel_device_info intel_ivybridge_q_info = { | |
303 | GEN7_FEATURES, | |
304 | .is_ivybridge = 1, | |
305 | .num_pipes = 0, /* legal, last one wins */ | |
306 | }; | |
307 | ||
308 | static const struct intel_device_info intel_valleyview_m_info = { | |
309 | GEN7_FEATURES, | |
310 | .is_mobile = 1, | |
311 | .num_pipes = 2, | |
312 | .is_valleyview = 1, | |
313 | .display_mmio_offset = VLV_DISPLAY_BASE, | |
314 | .has_llc = 0, /* legal, last one wins */ | |
315 | }; | |
316 | ||
317 | static const struct intel_device_info intel_valleyview_d_info = { | |
318 | GEN7_FEATURES, | |
319 | .num_pipes = 2, | |
320 | .is_valleyview = 1, | |
321 | .display_mmio_offset = VLV_DISPLAY_BASE, | |
322 | .has_llc = 0, /* legal, last one wins */ | |
323 | }; | |
324 | ||
325 | static const struct intel_device_info intel_haswell_d_info = { | |
326 | GEN7_FEATURES, | |
327 | .is_haswell = 1, | |
328 | .has_ddi = 1, | |
329 | .has_fpga_dbg = 1, | |
330 | .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING, | |
331 | }; | |
332 | ||
333 | static const struct intel_device_info intel_haswell_m_info = { | |
334 | GEN7_FEATURES, | |
335 | .is_haswell = 1, | |
336 | .is_mobile = 1, | |
337 | .has_ddi = 1, | |
338 | .has_fpga_dbg = 1, | |
339 | .has_fbc = 1, | |
340 | .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING, | |
341 | }; | |
342 | ||
343 | /* | |
344 | * Make sure any device matches here are from most specific to most | |
345 | * general. For example, since the Quanta match is based on the subsystem | |
346 | * and subvendor IDs, we need it to come before the more general IVB | |
347 | * PCI ID matches, otherwise we'll use the wrong info struct above. | |
348 | */ | |
349 | #define INTEL_PCI_IDS \ | |
350 | INTEL_I830_IDS(&intel_i830_info), \ | |
351 | INTEL_I845G_IDS(&intel_845g_info), \ | |
352 | INTEL_I85X_IDS(&intel_i85x_info), \ | |
353 | INTEL_I865G_IDS(&intel_i865g_info), \ | |
354 | INTEL_I915G_IDS(&intel_i915g_info), \ | |
355 | INTEL_I915GM_IDS(&intel_i915gm_info), \ | |
356 | INTEL_I945G_IDS(&intel_i945g_info), \ | |
357 | INTEL_I945GM_IDS(&intel_i945gm_info), \ | |
358 | INTEL_I965G_IDS(&intel_i965g_info), \ | |
359 | INTEL_G33_IDS(&intel_g33_info), \ | |
360 | INTEL_I965GM_IDS(&intel_i965gm_info), \ | |
361 | INTEL_GM45_IDS(&intel_gm45_info), \ | |
362 | INTEL_G45_IDS(&intel_g45_info), \ | |
363 | INTEL_PINEVIEW_IDS(&intel_pineview_info), \ | |
364 | INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info), \ | |
365 | INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info), \ | |
366 | INTEL_SNB_D_IDS(&intel_sandybridge_d_info), \ | |
367 | INTEL_SNB_M_IDS(&intel_sandybridge_m_info), \ | |
368 | INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */ \ | |
369 | INTEL_IVB_M_IDS(&intel_ivybridge_m_info), \ | |
370 | INTEL_IVB_D_IDS(&intel_ivybridge_d_info), \ | |
371 | INTEL_HSW_D_IDS(&intel_haswell_d_info), \ | |
372 | INTEL_HSW_M_IDS(&intel_haswell_m_info), \ | |
373 | INTEL_VLV_M_IDS(&intel_valleyview_m_info), \ | |
374 | INTEL_VLV_D_IDS(&intel_valleyview_d_info) | |
375 | ||
376 | static const struct pci_device_id pciidlist[] = { /* aka */ | |
377 | INTEL_PCI_IDS, | |
378 | {0, 0, 0} | |
379 | }; | |
380 | ||
381 | #if defined(CONFIG_DRM_I915_KMS) | |
382 | MODULE_DEVICE_TABLE(pci, pciidlist); | |
383 | #endif | |
384 | ||
385 | void intel_detect_pch(struct drm_device *dev) | |
386 | { | |
387 | struct drm_i915_private *dev_priv = dev->dev_private; | |
388 | struct pci_dev *pch; | |
389 | ||
390 | /* In all current cases, num_pipes is equivalent to the PCH_NOP setting | |
391 | * (which really amounts to a PCH but no South Display). | |
392 | */ | |
393 | if (INTEL_INFO(dev)->num_pipes == 0) { | |
394 | dev_priv->pch_type = PCH_NOP; | |
395 | return; | |
396 | } | |
397 | ||
398 | /* | |
399 | * The reason to probe ISA bridge instead of Dev31:Fun0 is to | |
400 | * make graphics device passthrough work easy for VMM, that only | |
401 | * need to expose ISA bridge to let driver know the real hardware | |
402 | * underneath. This is a requirement from virtualization team. | |
403 | * | |
404 | * In some virtualized environments (e.g. XEN), there is irrelevant | |
405 | * ISA bridge in the system. To work reliably, we should scan trhough | |
406 | * all the ISA bridge devices and check for the first match, instead | |
407 | * of only checking the first one. | |
408 | */ | |
409 | pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL); | |
410 | while (pch) { | |
411 | struct pci_dev *curr = pch; | |
412 | if (pch->vendor == PCI_VENDOR_ID_INTEL) { | |
413 | unsigned short id; | |
414 | id = pch->device & INTEL_PCH_DEVICE_ID_MASK; | |
415 | dev_priv->pch_id = id; | |
416 | ||
417 | if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) { | |
418 | dev_priv->pch_type = PCH_IBX; | |
419 | DRM_DEBUG_KMS("Found Ibex Peak PCH\n"); | |
420 | WARN_ON(!IS_GEN5(dev)); | |
421 | } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) { | |
422 | dev_priv->pch_type = PCH_CPT; | |
423 | DRM_DEBUG_KMS("Found CougarPoint PCH\n"); | |
424 | WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev))); | |
425 | } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) { | |
426 | /* PantherPoint is CPT compatible */ | |
427 | dev_priv->pch_type = PCH_CPT; | |
428 | DRM_DEBUG_KMS("Found PantherPoint PCH\n"); | |
429 | WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev))); | |
430 | } else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { | |
431 | dev_priv->pch_type = PCH_LPT; | |
432 | DRM_DEBUG_KMS("Found LynxPoint PCH\n"); | |
433 | WARN_ON(!IS_HASWELL(dev)); | |
434 | WARN_ON(IS_ULT(dev)); | |
435 | } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) { | |
436 | dev_priv->pch_type = PCH_LPT; | |
437 | DRM_DEBUG_KMS("Found LynxPoint LP PCH\n"); | |
438 | WARN_ON(!IS_HASWELL(dev)); | |
439 | WARN_ON(!IS_ULT(dev)); | |
440 | } else { | |
441 | goto check_next; | |
442 | } | |
443 | pci_dev_put(pch); | |
444 | break; | |
445 | } | |
446 | check_next: | |
447 | pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, curr); | |
448 | pci_dev_put(curr); | |
449 | } | |
450 | if (!pch) | |
451 | DRM_DEBUG_KMS("No PCH found?\n"); | |
452 | } | |
453 | ||
454 | bool i915_semaphore_is_enabled(struct drm_device *dev) | |
455 | { | |
456 | if (INTEL_INFO(dev)->gen < 6) | |
457 | return 0; | |
458 | ||
459 | if (i915_semaphores >= 0) | |
460 | return i915_semaphores; | |
461 | ||
462 | #ifdef CONFIG_INTEL_IOMMU | |
463 | /* Enable semaphores on SNB when IO remapping is off */ | |
464 | if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped) | |
465 | return false; | |
466 | #endif | |
467 | ||
468 | return 1; | |
469 | } | |
470 | ||
471 | static int i915_drm_freeze(struct drm_device *dev) | |
472 | { | |
473 | struct drm_i915_private *dev_priv = dev->dev_private; | |
474 | struct drm_crtc *crtc; | |
475 | ||
476 | /* ignore lid events during suspend */ | |
477 | mutex_lock(&dev_priv->modeset_restore_lock); | |
478 | dev_priv->modeset_restore = MODESET_SUSPENDED; | |
479 | mutex_unlock(&dev_priv->modeset_restore_lock); | |
480 | ||
481 | /* We do a lot of poking in a lot of registers, make sure they work | |
482 | * properly. */ | |
483 | hsw_disable_package_c8(dev_priv); | |
484 | intel_display_set_init_power(dev, true); | |
485 | ||
486 | drm_kms_helper_poll_disable(dev); | |
487 | ||
488 | pci_save_state(dev->pdev); | |
489 | ||
490 | /* If KMS is active, we do the leavevt stuff here */ | |
491 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { | |
492 | int error; | |
493 | ||
494 | error = i915_gem_suspend(dev); | |
495 | if (error) { | |
496 | dev_err(&dev->pdev->dev, | |
497 | "GEM idle failed, resume might fail\n"); | |
498 | return error; | |
499 | } | |
500 | ||
501 | cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work); | |
502 | ||
503 | drm_irq_uninstall(dev); | |
504 | dev_priv->enable_hotplug_processing = false; | |
505 | /* | |
506 | * Disable CRTCs directly since we want to preserve sw state | |
507 | * for _thaw. | |
508 | */ | |
509 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) | |
510 | dev_priv->display.crtc_disable(crtc); | |
511 | ||
512 | intel_modeset_suspend_hw(dev); | |
513 | } | |
514 | ||
515 | i915_gem_suspend_gtt_mappings(dev); | |
516 | ||
517 | i915_save_state(dev); | |
518 | ||
519 | intel_opregion_fini(dev); | |
520 | ||
521 | console_lock(); | |
522 | intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED); | |
523 | console_unlock(); | |
524 | ||
525 | return 0; | |
526 | } | |
527 | ||
528 | int i915_suspend(struct drm_device *dev, pm_message_t state) | |
529 | { | |
530 | int error; | |
531 | ||
532 | if (!dev || !dev->dev_private) { | |
533 | DRM_ERROR("dev: %p\n", dev); | |
534 | DRM_ERROR("DRM not initialized, aborting suspend.\n"); | |
535 | return -ENODEV; | |
536 | } | |
537 | ||
538 | if (state.event == PM_EVENT_PRETHAW) | |
539 | return 0; | |
540 | ||
541 | ||
542 | if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) | |
543 | return 0; | |
544 | ||
545 | error = i915_drm_freeze(dev); | |
546 | if (error) | |
547 | return error; | |
548 | ||
549 | if (state.event == PM_EVENT_SUSPEND) { | |
550 | /* Shut down the device */ | |
551 | pci_disable_device(dev->pdev); | |
552 | pci_set_power_state(dev->pdev, PCI_D3hot); | |
553 | } | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
558 | void intel_console_resume(struct work_struct *work) | |
559 | { | |
560 | struct drm_i915_private *dev_priv = | |
561 | container_of(work, struct drm_i915_private, | |
562 | console_resume_work); | |
563 | struct drm_device *dev = dev_priv->dev; | |
564 | ||
565 | console_lock(); | |
566 | intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING); | |
567 | console_unlock(); | |
568 | } | |
569 | ||
570 | static void intel_resume_hotplug(struct drm_device *dev) | |
571 | { | |
572 | struct drm_mode_config *mode_config = &dev->mode_config; | |
573 | struct intel_encoder *encoder; | |
574 | ||
575 | mutex_lock(&mode_config->mutex); | |
576 | DRM_DEBUG_KMS("running encoder hotplug functions\n"); | |
577 | ||
578 | list_for_each_entry(encoder, &mode_config->encoder_list, base.head) | |
579 | if (encoder->hot_plug) | |
580 | encoder->hot_plug(encoder); | |
581 | ||
582 | mutex_unlock(&mode_config->mutex); | |
583 | ||
584 | /* Just fire off a uevent and let userspace tell us what to do */ | |
585 | drm_helper_hpd_irq_event(dev); | |
586 | } | |
587 | ||
588 | static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings) | |
589 | { | |
590 | struct drm_i915_private *dev_priv = dev->dev_private; | |
591 | int error = 0; | |
592 | ||
593 | intel_uncore_early_sanitize(dev); | |
594 | ||
595 | intel_uncore_sanitize(dev); | |
596 | ||
597 | if (drm_core_check_feature(dev, DRIVER_MODESET) && | |
598 | restore_gtt_mappings) { | |
599 | mutex_lock(&dev->struct_mutex); | |
600 | i915_gem_restore_gtt_mappings(dev); | |
601 | mutex_unlock(&dev->struct_mutex); | |
602 | } | |
603 | ||
604 | intel_power_domains_init_hw(dev); | |
605 | ||
606 | i915_restore_state(dev); | |
607 | intel_opregion_setup(dev); | |
608 | ||
609 | /* KMS EnterVT equivalent */ | |
610 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { | |
611 | intel_init_pch_refclk(dev); | |
612 | ||
613 | mutex_lock(&dev->struct_mutex); | |
614 | ||
615 | error = i915_gem_init_hw(dev); | |
616 | mutex_unlock(&dev->struct_mutex); | |
617 | ||
618 | /* We need working interrupts for modeset enabling ... */ | |
619 | drm_irq_install(dev); | |
620 | ||
621 | intel_modeset_init_hw(dev); | |
622 | ||
623 | drm_modeset_lock_all(dev); | |
624 | intel_modeset_setup_hw_state(dev, true); | |
625 | drm_modeset_unlock_all(dev); | |
626 | ||
627 | /* | |
628 | * ... but also need to make sure that hotplug processing | |
629 | * doesn't cause havoc. Like in the driver load code we don't | |
630 | * bother with the tiny race here where we might loose hotplug | |
631 | * notifications. | |
632 | * */ | |
633 | intel_hpd_init(dev); | |
634 | dev_priv->enable_hotplug_processing = true; | |
635 | /* Config may have changed between suspend and resume */ | |
636 | intel_resume_hotplug(dev); | |
637 | } | |
638 | ||
639 | intel_opregion_init(dev); | |
640 | ||
641 | /* | |
642 | * The console lock can be pretty contented on resume due | |
643 | * to all the printk activity. Try to keep it out of the hot | |
644 | * path of resume if possible. | |
645 | */ | |
646 | if (console_trylock()) { | |
647 | intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING); | |
648 | console_unlock(); | |
649 | } else { | |
650 | schedule_work(&dev_priv->console_resume_work); | |
651 | } | |
652 | ||
653 | /* Undo what we did at i915_drm_freeze so the refcount goes back to the | |
654 | * expected level. */ | |
655 | hsw_enable_package_c8(dev_priv); | |
656 | ||
657 | mutex_lock(&dev_priv->modeset_restore_lock); | |
658 | dev_priv->modeset_restore = MODESET_DONE; | |
659 | mutex_unlock(&dev_priv->modeset_restore_lock); | |
660 | return error; | |
661 | } | |
662 | ||
663 | static int i915_drm_thaw(struct drm_device *dev) | |
664 | { | |
665 | if (drm_core_check_feature(dev, DRIVER_MODESET)) | |
666 | i915_check_and_clear_faults(dev); | |
667 | ||
668 | return __i915_drm_thaw(dev, true); | |
669 | } | |
670 | ||
671 | int i915_resume(struct drm_device *dev) | |
672 | { | |
673 | struct drm_i915_private *dev_priv = dev->dev_private; | |
674 | int ret; | |
675 | ||
676 | if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) | |
677 | return 0; | |
678 | ||
679 | if (pci_enable_device(dev->pdev)) | |
680 | return -EIO; | |
681 | ||
682 | pci_set_master(dev->pdev); | |
683 | ||
684 | /* | |
685 | * Platforms with opregion should have sane BIOS, older ones (gen3 and | |
686 | * earlier) need to restore the GTT mappings since the BIOS might clear | |
687 | * all our scratch PTEs. | |
688 | */ | |
689 | ret = __i915_drm_thaw(dev, !dev_priv->opregion.header); | |
690 | if (ret) | |
691 | return ret; | |
692 | ||
693 | drm_kms_helper_poll_enable(dev); | |
694 | return 0; | |
695 | } | |
696 | ||
697 | /** | |
698 | * i915_reset - reset chip after a hang | |
699 | * @dev: drm device to reset | |
700 | * | |
701 | * Reset the chip. Useful if a hang is detected. Returns zero on successful | |
702 | * reset or otherwise an error code. | |
703 | * | |
704 | * Procedure is fairly simple: | |
705 | * - reset the chip using the reset reg | |
706 | * - re-init context state | |
707 | * - re-init hardware status page | |
708 | * - re-init ring buffer | |
709 | * - re-init interrupt state | |
710 | * - re-init display | |
711 | */ | |
712 | int i915_reset(struct drm_device *dev) | |
713 | { | |
714 | drm_i915_private_t *dev_priv = dev->dev_private; | |
715 | bool simulated; | |
716 | int ret; | |
717 | ||
718 | if (!i915_try_reset) | |
719 | return 0; | |
720 | ||
721 | mutex_lock(&dev->struct_mutex); | |
722 | ||
723 | i915_gem_reset(dev); | |
724 | ||
725 | simulated = dev_priv->gpu_error.stop_rings != 0; | |
726 | ||
727 | ret = intel_gpu_reset(dev); | |
728 | ||
729 | /* Also reset the gpu hangman. */ | |
730 | if (simulated) { | |
731 | DRM_INFO("Simulated gpu hang, resetting stop_rings\n"); | |
732 | dev_priv->gpu_error.stop_rings = 0; | |
733 | if (ret == -ENODEV) { | |
734 | DRM_ERROR("Reset not implemented, but ignoring " | |
735 | "error for simulated gpu hangs\n"); | |
736 | ret = 0; | |
737 | } | |
738 | } | |
739 | ||
740 | if (ret) { | |
741 | DRM_ERROR("Failed to reset chip.\n"); | |
742 | mutex_unlock(&dev->struct_mutex); | |
743 | return ret; | |
744 | } | |
745 | ||
746 | /* Ok, now get things going again... */ | |
747 | ||
748 | /* | |
749 | * Everything depends on having the GTT running, so we need to start | |
750 | * there. Fortunately we don't need to do this unless we reset the | |
751 | * chip at a PCI level. | |
752 | * | |
753 | * Next we need to restore the context, but we don't use those | |
754 | * yet either... | |
755 | * | |
756 | * Ring buffer needs to be re-initialized in the KMS case, or if X | |
757 | * was running at the time of the reset (i.e. we weren't VT | |
758 | * switched away). | |
759 | */ | |
760 | if (drm_core_check_feature(dev, DRIVER_MODESET) || | |
761 | !dev_priv->ums.mm_suspended) { | |
762 | dev_priv->ums.mm_suspended = 0; | |
763 | ||
764 | ret = i915_gem_init_hw(dev); | |
765 | mutex_unlock(&dev->struct_mutex); | |
766 | if (ret) { | |
767 | DRM_ERROR("Failed hw init on reset %d\n", ret); | |
768 | return ret; | |
769 | } | |
770 | ||
771 | drm_irq_uninstall(dev); | |
772 | drm_irq_install(dev); | |
773 | intel_hpd_init(dev); | |
774 | } else { | |
775 | mutex_unlock(&dev->struct_mutex); | |
776 | } | |
777 | ||
778 | return 0; | |
779 | } | |
780 | ||
781 | static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
782 | { | |
783 | struct intel_device_info *intel_info = | |
784 | (struct intel_device_info *) ent->driver_data; | |
785 | ||
786 | if (IS_PRELIMINARY_HW(intel_info) && !i915_preliminary_hw_support) { | |
787 | DRM_INFO("This hardware requires preliminary hardware support.\n" | |
788 | "See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\n"); | |
789 | return -ENODEV; | |
790 | } | |
791 | ||
792 | /* Only bind to function 0 of the device. Early generations | |
793 | * used function 1 as a placeholder for multi-head. This causes | |
794 | * us confusion instead, especially on the systems where both | |
795 | * functions have the same PCI-ID! | |
796 | */ | |
797 | if (PCI_FUNC(pdev->devfn)) | |
798 | return -ENODEV; | |
799 | ||
800 | /* We've managed to ship a kms-enabled ddx that shipped with an XvMC | |
801 | * implementation for gen3 (and only gen3) that used legacy drm maps | |
802 | * (gasp!) to share buffers between X and the client. Hence we need to | |
803 | * keep around the fake agp stuff for gen3, even when kms is enabled. */ | |
804 | if (intel_info->gen != 3) { | |
805 | driver.driver_features &= | |
806 | ~(DRIVER_USE_AGP | DRIVER_REQUIRE_AGP); | |
807 | } else if (!intel_agp_enabled) { | |
808 | DRM_ERROR("drm/i915 can't work without intel_agp module!\n"); | |
809 | return -ENODEV; | |
810 | } | |
811 | ||
812 | return drm_get_pci_dev(pdev, ent, &driver); | |
813 | } | |
814 | ||
815 | static void | |
816 | i915_pci_remove(struct pci_dev *pdev) | |
817 | { | |
818 | struct drm_device *dev = pci_get_drvdata(pdev); | |
819 | ||
820 | drm_put_dev(dev); | |
821 | } | |
822 | ||
823 | static int i915_pm_suspend(struct device *dev) | |
824 | { | |
825 | struct pci_dev *pdev = to_pci_dev(dev); | |
826 | struct drm_device *drm_dev = pci_get_drvdata(pdev); | |
827 | int error; | |
828 | ||
829 | if (!drm_dev || !drm_dev->dev_private) { | |
830 | dev_err(dev, "DRM not initialized, aborting suspend.\n"); | |
831 | return -ENODEV; | |
832 | } | |
833 | ||
834 | if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF) | |
835 | return 0; | |
836 | ||
837 | error = i915_drm_freeze(drm_dev); | |
838 | if (error) | |
839 | return error; | |
840 | ||
841 | pci_disable_device(pdev); | |
842 | pci_set_power_state(pdev, PCI_D3hot); | |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
847 | static int i915_pm_resume(struct device *dev) | |
848 | { | |
849 | struct pci_dev *pdev = to_pci_dev(dev); | |
850 | struct drm_device *drm_dev = pci_get_drvdata(pdev); | |
851 | ||
852 | return i915_resume(drm_dev); | |
853 | } | |
854 | ||
855 | static int i915_pm_freeze(struct device *dev) | |
856 | { | |
857 | struct pci_dev *pdev = to_pci_dev(dev); | |
858 | struct drm_device *drm_dev = pci_get_drvdata(pdev); | |
859 | ||
860 | if (!drm_dev || !drm_dev->dev_private) { | |
861 | dev_err(dev, "DRM not initialized, aborting suspend.\n"); | |
862 | return -ENODEV; | |
863 | } | |
864 | ||
865 | return i915_drm_freeze(drm_dev); | |
866 | } | |
867 | ||
868 | static int i915_pm_thaw(struct device *dev) | |
869 | { | |
870 | struct pci_dev *pdev = to_pci_dev(dev); | |
871 | struct drm_device *drm_dev = pci_get_drvdata(pdev); | |
872 | ||
873 | return i915_drm_thaw(drm_dev); | |
874 | } | |
875 | ||
876 | static int i915_pm_poweroff(struct device *dev) | |
877 | { | |
878 | struct pci_dev *pdev = to_pci_dev(dev); | |
879 | struct drm_device *drm_dev = pci_get_drvdata(pdev); | |
880 | ||
881 | return i915_drm_freeze(drm_dev); | |
882 | } | |
883 | ||
884 | static const struct dev_pm_ops i915_pm_ops = { | |
885 | .suspend = i915_pm_suspend, | |
886 | .resume = i915_pm_resume, | |
887 | .freeze = i915_pm_freeze, | |
888 | .thaw = i915_pm_thaw, | |
889 | .poweroff = i915_pm_poweroff, | |
890 | .restore = i915_pm_resume, | |
891 | }; | |
892 | ||
893 | static const struct vm_operations_struct i915_gem_vm_ops = { | |
894 | .fault = i915_gem_fault, | |
895 | .open = drm_gem_vm_open, | |
896 | .close = drm_gem_vm_close, | |
897 | }; | |
898 | ||
899 | static const struct file_operations i915_driver_fops = { | |
900 | .owner = THIS_MODULE, | |
901 | .open = drm_open, | |
902 | .release = drm_release, | |
903 | .unlocked_ioctl = drm_ioctl, | |
904 | .mmap = drm_gem_mmap, | |
905 | .poll = drm_poll, | |
906 | .read = drm_read, | |
907 | #ifdef CONFIG_COMPAT | |
908 | .compat_ioctl = i915_compat_ioctl, | |
909 | #endif | |
910 | .llseek = noop_llseek, | |
911 | }; | |
912 | ||
913 | static struct drm_driver driver = { | |
914 | /* Don't use MTRRs here; the Xserver or userspace app should | |
915 | * deal with them for Intel hardware. | |
916 | */ | |
917 | .driver_features = | |
918 | DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | | |
919 | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME | | |
920 | DRIVER_RENDER, | |
921 | .load = i915_driver_load, | |
922 | .unload = i915_driver_unload, | |
923 | .open = i915_driver_open, | |
924 | .lastclose = i915_driver_lastclose, | |
925 | .preclose = i915_driver_preclose, | |
926 | .postclose = i915_driver_postclose, | |
927 | ||
928 | /* Used in place of i915_pm_ops for non-DRIVER_MODESET */ | |
929 | .suspend = i915_suspend, | |
930 | .resume = i915_resume, | |
931 | ||
932 | .device_is_agp = i915_driver_device_is_agp, | |
933 | .master_create = i915_master_create, | |
934 | .master_destroy = i915_master_destroy, | |
935 | #if defined(CONFIG_DEBUG_FS) | |
936 | .debugfs_init = i915_debugfs_init, | |
937 | .debugfs_cleanup = i915_debugfs_cleanup, | |
938 | #endif | |
939 | .gem_free_object = i915_gem_free_object, | |
940 | .gem_vm_ops = &i915_gem_vm_ops, | |
941 | ||
942 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, | |
943 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
944 | .gem_prime_export = i915_gem_prime_export, | |
945 | .gem_prime_import = i915_gem_prime_import, | |
946 | ||
947 | .dumb_create = i915_gem_dumb_create, | |
948 | .dumb_map_offset = i915_gem_mmap_gtt, | |
949 | .dumb_destroy = drm_gem_dumb_destroy, | |
950 | .ioctls = i915_ioctls, | |
951 | .fops = &i915_driver_fops, | |
952 | .name = DRIVER_NAME, | |
953 | .desc = DRIVER_DESC, | |
954 | .date = DRIVER_DATE, | |
955 | .major = DRIVER_MAJOR, | |
956 | .minor = DRIVER_MINOR, | |
957 | .patchlevel = DRIVER_PATCHLEVEL, | |
958 | }; | |
959 | ||
960 | static struct pci_driver i915_pci_driver = { | |
961 | .name = DRIVER_NAME, | |
962 | .id_table = pciidlist, | |
963 | .probe = i915_pci_probe, | |
964 | .remove = i915_pci_remove, | |
965 | .driver.pm = &i915_pm_ops, | |
966 | }; | |
967 | ||
968 | static int __init i915_init(void) | |
969 | { | |
970 | driver.num_ioctls = i915_max_ioctl; | |
971 | ||
972 | /* | |
973 | * If CONFIG_DRM_I915_KMS is set, default to KMS unless | |
974 | * explicitly disabled with the module pararmeter. | |
975 | * | |
976 | * Otherwise, just follow the parameter (defaulting to off). | |
977 | * | |
978 | * Allow optional vga_text_mode_force boot option to override | |
979 | * the default behavior. | |
980 | */ | |
981 | #if defined(CONFIG_DRM_I915_KMS) | |
982 | if (i915_modeset != 0) | |
983 | driver.driver_features |= DRIVER_MODESET; | |
984 | #endif | |
985 | if (i915_modeset == 1) | |
986 | driver.driver_features |= DRIVER_MODESET; | |
987 | ||
988 | #ifdef CONFIG_VGA_CONSOLE | |
989 | if (vgacon_text_force() && i915_modeset == -1) | |
990 | driver.driver_features &= ~DRIVER_MODESET; | |
991 | #endif | |
992 | ||
993 | if (!(driver.driver_features & DRIVER_MODESET)) | |
994 | driver.get_vblank_timestamp = NULL; | |
995 | ||
996 | return drm_pci_init(&driver, &i915_pci_driver); | |
997 | } | |
998 | ||
999 | static void __exit i915_exit(void) | |
1000 | { | |
1001 | drm_pci_exit(&driver, &i915_pci_driver); | |
1002 | } | |
1003 | ||
1004 | module_init(i915_init); | |
1005 | module_exit(i915_exit); | |
1006 | ||
1007 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
1008 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1009 | MODULE_LICENSE("GPL and additional rights"); |