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/acpi.h>
31 #include <linux/device.h>
32 #include <linux/oom.h>
33 #include <linux/module.h>
34 #include <linux/pci.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/pnp.h>
38 #include <linux/slab.h>
39 #include <linux/vgaarb.h>
40 #include <linux/vga_switcheroo.h>
42 #include <acpi/video.h>
45 #include <drm/drm_crtc_helper.h>
46 #include <drm/i915_drm.h>
49 #include "i915_trace.h"
50 #include "i915_vgpu.h"
51 #include "intel_drv.h"
53 static struct drm_driver driver
;
55 static unsigned int i915_load_fail_count
;
57 bool __i915_inject_load_failure(const char *func
, int line
)
59 if (i915_load_fail_count
>= i915
.inject_load_failure
)
62 if (++i915_load_fail_count
== i915
.inject_load_failure
) {
63 DRM_INFO("Injecting failure at checkpoint %u [%s:%d]\n",
64 i915
.inject_load_failure
, func
, line
);
71 #define FDO_BUG_URL "https://bugs.freedesktop.org/enter_bug.cgi?product=DRI"
72 #define FDO_BUG_MSG "Please file a bug at " FDO_BUG_URL " against DRM/Intel " \
73 "providing the dmesg log by booting with drm.debug=0xf"
76 __i915_printk(struct drm_i915_private
*dev_priv
, const char *level
,
79 static bool shown_bug_once
;
80 struct device
*dev
= dev_priv
->dev
->dev
;
81 bool is_error
= level
[1] <= KERN_ERR
[1];
82 bool is_debug
= level
[1] == KERN_DEBUG
[1];
86 if (is_debug
&& !(drm_debug
& DRM_UT_DRIVER
))
94 dev_printk(level
, dev
, "[" DRM_NAME
":%ps] %pV",
95 __builtin_return_address(0), &vaf
);
97 if (is_error
&& !shown_bug_once
) {
98 dev_notice(dev
, "%s", FDO_BUG_MSG
);
99 shown_bug_once
= true;
105 static bool i915_error_injected(struct drm_i915_private
*dev_priv
)
107 return i915
.inject_load_failure
&&
108 i915_load_fail_count
== i915
.inject_load_failure
;
111 #define i915_load_error(dev_priv, fmt, ...) \
112 __i915_printk(dev_priv, \
113 i915_error_injected(dev_priv) ? KERN_DEBUG : KERN_ERR, \
117 static enum intel_pch
intel_virt_detect_pch(struct drm_device
*dev
)
119 enum intel_pch ret
= PCH_NOP
;
122 * In a virtualized passthrough environment we can be in a
123 * setup where the ISA bridge is not able to be passed through.
124 * In this case, a south bridge can be emulated and we have to
125 * make an educated guess as to which PCH is really there.
130 DRM_DEBUG_KMS("Assuming Ibex Peak PCH\n");
131 } else if (IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)) {
133 DRM_DEBUG_KMS("Assuming CouarPoint PCH\n");
134 } else if (IS_HASWELL(dev
) || IS_BROADWELL(dev
)) {
136 DRM_DEBUG_KMS("Assuming LynxPoint PCH\n");
137 } else if (IS_SKYLAKE(dev
) || IS_KABYLAKE(dev
)) {
139 DRM_DEBUG_KMS("Assuming SunrisePoint PCH\n");
145 static void intel_detect_pch(struct drm_device
*dev
)
147 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
148 struct pci_dev
*pch
= NULL
;
150 /* In all current cases, num_pipes is equivalent to the PCH_NOP setting
151 * (which really amounts to a PCH but no South Display).
153 if (INTEL_INFO(dev
)->num_pipes
== 0) {
154 dev_priv
->pch_type
= PCH_NOP
;
159 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
160 * make graphics device passthrough work easy for VMM, that only
161 * need to expose ISA bridge to let driver know the real hardware
162 * underneath. This is a requirement from virtualization team.
164 * In some virtualized environments (e.g. XEN), there is irrelevant
165 * ISA bridge in the system. To work reliably, we should scan trhough
166 * all the ISA bridge devices and check for the first match, instead
167 * of only checking the first one.
169 while ((pch
= pci_get_class(PCI_CLASS_BRIDGE_ISA
<< 8, pch
))) {
170 if (pch
->vendor
== PCI_VENDOR_ID_INTEL
) {
171 unsigned short id
= pch
->device
& INTEL_PCH_DEVICE_ID_MASK
;
172 dev_priv
->pch_id
= id
;
174 if (id
== INTEL_PCH_IBX_DEVICE_ID_TYPE
) {
175 dev_priv
->pch_type
= PCH_IBX
;
176 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
177 WARN_ON(!IS_GEN5(dev
));
178 } else if (id
== INTEL_PCH_CPT_DEVICE_ID_TYPE
) {
179 dev_priv
->pch_type
= PCH_CPT
;
180 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
181 WARN_ON(!(IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)));
182 } else if (id
== INTEL_PCH_PPT_DEVICE_ID_TYPE
) {
183 /* PantherPoint is CPT compatible */
184 dev_priv
->pch_type
= PCH_CPT
;
185 DRM_DEBUG_KMS("Found PantherPoint PCH\n");
186 WARN_ON(!(IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)));
187 } else if (id
== INTEL_PCH_LPT_DEVICE_ID_TYPE
) {
188 dev_priv
->pch_type
= PCH_LPT
;
189 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
190 WARN_ON(!IS_HASWELL(dev
) && !IS_BROADWELL(dev
));
191 WARN_ON(IS_HSW_ULT(dev
) || IS_BDW_ULT(dev
));
192 } else if (id
== INTEL_PCH_LPT_LP_DEVICE_ID_TYPE
) {
193 dev_priv
->pch_type
= PCH_LPT
;
194 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
195 WARN_ON(!IS_HASWELL(dev
) && !IS_BROADWELL(dev
));
196 WARN_ON(!IS_HSW_ULT(dev
) && !IS_BDW_ULT(dev
));
197 } else if (id
== INTEL_PCH_SPT_DEVICE_ID_TYPE
) {
198 dev_priv
->pch_type
= PCH_SPT
;
199 DRM_DEBUG_KMS("Found SunrisePoint PCH\n");
200 WARN_ON(!IS_SKYLAKE(dev
) &&
202 } else if (id
== INTEL_PCH_SPT_LP_DEVICE_ID_TYPE
) {
203 dev_priv
->pch_type
= PCH_SPT
;
204 DRM_DEBUG_KMS("Found SunrisePoint LP PCH\n");
205 WARN_ON(!IS_SKYLAKE(dev
) &&
207 } else if ((id
== INTEL_PCH_P2X_DEVICE_ID_TYPE
) ||
208 (id
== INTEL_PCH_P3X_DEVICE_ID_TYPE
) ||
209 ((id
== INTEL_PCH_QEMU_DEVICE_ID_TYPE
) &&
210 pch
->subsystem_vendor
==
211 PCI_SUBVENDOR_ID_REDHAT_QUMRANET
&&
212 pch
->subsystem_device
==
213 PCI_SUBDEVICE_ID_QEMU
)) {
214 dev_priv
->pch_type
= intel_virt_detect_pch(dev
);
222 DRM_DEBUG_KMS("No PCH found.\n");
227 bool i915_semaphore_is_enabled(struct drm_i915_private
*dev_priv
)
229 if (INTEL_GEN(dev_priv
) < 6)
232 if (i915
.semaphores
>= 0)
233 return i915
.semaphores
;
235 /* TODO: make semaphores and Execlists play nicely together */
236 if (i915
.enable_execlists
)
239 #ifdef CONFIG_INTEL_IOMMU
240 /* Enable semaphores on SNB when IO remapping is off */
241 if (IS_GEN6(dev_priv
) && intel_iommu_gfx_mapped
)
248 static int i915_getparam(struct drm_device
*dev
, void *data
,
249 struct drm_file
*file_priv
)
251 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
252 drm_i915_getparam_t
*param
= data
;
255 switch (param
->param
) {
256 case I915_PARAM_IRQ_ACTIVE
:
257 case I915_PARAM_ALLOW_BATCHBUFFER
:
258 case I915_PARAM_LAST_DISPATCH
:
259 /* Reject all old ums/dri params. */
261 case I915_PARAM_CHIPSET_ID
:
262 value
= dev
->pdev
->device
;
264 case I915_PARAM_REVISION
:
265 value
= dev
->pdev
->revision
;
267 case I915_PARAM_HAS_GEM
:
270 case I915_PARAM_NUM_FENCES_AVAIL
:
271 value
= dev_priv
->num_fence_regs
;
273 case I915_PARAM_HAS_OVERLAY
:
274 value
= dev_priv
->overlay
? 1 : 0;
276 case I915_PARAM_HAS_PAGEFLIPPING
:
279 case I915_PARAM_HAS_EXECBUF2
:
283 case I915_PARAM_HAS_BSD
:
284 value
= intel_engine_initialized(&dev_priv
->engine
[VCS
]);
286 case I915_PARAM_HAS_BLT
:
287 value
= intel_engine_initialized(&dev_priv
->engine
[BCS
]);
289 case I915_PARAM_HAS_VEBOX
:
290 value
= intel_engine_initialized(&dev_priv
->engine
[VECS
]);
292 case I915_PARAM_HAS_BSD2
:
293 value
= intel_engine_initialized(&dev_priv
->engine
[VCS2
]);
295 case I915_PARAM_HAS_RELAXED_FENCING
:
298 case I915_PARAM_HAS_COHERENT_RINGS
:
301 case I915_PARAM_HAS_EXEC_CONSTANTS
:
302 value
= INTEL_INFO(dev
)->gen
>= 4;
304 case I915_PARAM_HAS_RELAXED_DELTA
:
307 case I915_PARAM_HAS_GEN7_SOL_RESET
:
310 case I915_PARAM_HAS_LLC
:
311 value
= HAS_LLC(dev
);
313 case I915_PARAM_HAS_WT
:
316 case I915_PARAM_HAS_ALIASING_PPGTT
:
317 value
= USES_PPGTT(dev
);
319 case I915_PARAM_HAS_WAIT_TIMEOUT
:
322 case I915_PARAM_HAS_SEMAPHORES
:
323 value
= i915_semaphore_is_enabled(dev_priv
);
325 case I915_PARAM_HAS_PRIME_VMAP_FLUSH
:
328 case I915_PARAM_HAS_SECURE_BATCHES
:
329 value
= capable(CAP_SYS_ADMIN
);
331 case I915_PARAM_HAS_PINNED_BATCHES
:
334 case I915_PARAM_HAS_EXEC_NO_RELOC
:
337 case I915_PARAM_HAS_EXEC_HANDLE_LUT
:
340 case I915_PARAM_CMD_PARSER_VERSION
:
341 value
= i915_cmd_parser_get_version(dev_priv
);
343 case I915_PARAM_HAS_COHERENT_PHYS_GTT
:
346 case I915_PARAM_MMAP_VERSION
:
349 case I915_PARAM_SUBSLICE_TOTAL
:
350 value
= INTEL_INFO(dev
)->subslice_total
;
354 case I915_PARAM_EU_TOTAL
:
355 value
= INTEL_INFO(dev
)->eu_total
;
359 case I915_PARAM_HAS_GPU_RESET
:
360 value
= i915
.enable_hangcheck
&& intel_has_gpu_reset(dev_priv
);
362 case I915_PARAM_HAS_RESOURCE_STREAMER
:
363 value
= HAS_RESOURCE_STREAMER(dev
);
365 case I915_PARAM_HAS_EXEC_SOFTPIN
:
368 case I915_PARAM_HAS_POOLED_EU
:
369 value
= HAS_POOLED_EU(dev
);
371 case I915_PARAM_MIN_EU_IN_POOL
:
372 value
= INTEL_INFO(dev
)->min_eu_in_pool
;
375 DRM_DEBUG("Unknown parameter %d\n", param
->param
);
379 if (put_user(value
, param
->value
))
385 static int i915_get_bridge_dev(struct drm_device
*dev
)
387 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
389 dev_priv
->bridge_dev
= pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
390 if (!dev_priv
->bridge_dev
) {
391 DRM_ERROR("bridge device not found\n");
397 /* Allocate space for the MCH regs if needed, return nonzero on error */
399 intel_alloc_mchbar_resource(struct drm_device
*dev
)
401 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
402 int reg
= INTEL_INFO(dev
)->gen
>= 4 ? MCHBAR_I965
: MCHBAR_I915
;
403 u32 temp_lo
, temp_hi
= 0;
407 if (INTEL_INFO(dev
)->gen
>= 4)
408 pci_read_config_dword(dev_priv
->bridge_dev
, reg
+ 4, &temp_hi
);
409 pci_read_config_dword(dev_priv
->bridge_dev
, reg
, &temp_lo
);
410 mchbar_addr
= ((u64
)temp_hi
<< 32) | temp_lo
;
412 /* If ACPI doesn't have it, assume we need to allocate it ourselves */
415 pnp_range_reserved(mchbar_addr
, mchbar_addr
+ MCHBAR_SIZE
))
419 /* Get some space for it */
420 dev_priv
->mch_res
.name
= "i915 MCHBAR";
421 dev_priv
->mch_res
.flags
= IORESOURCE_MEM
;
422 ret
= pci_bus_alloc_resource(dev_priv
->bridge_dev
->bus
,
424 MCHBAR_SIZE
, MCHBAR_SIZE
,
426 0, pcibios_align_resource
,
427 dev_priv
->bridge_dev
);
429 DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret
);
430 dev_priv
->mch_res
.start
= 0;
434 if (INTEL_INFO(dev
)->gen
>= 4)
435 pci_write_config_dword(dev_priv
->bridge_dev
, reg
+ 4,
436 upper_32_bits(dev_priv
->mch_res
.start
));
438 pci_write_config_dword(dev_priv
->bridge_dev
, reg
,
439 lower_32_bits(dev_priv
->mch_res
.start
));
443 /* Setup MCHBAR if possible, return true if we should disable it again */
445 intel_setup_mchbar(struct drm_device
*dev
)
447 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
448 int mchbar_reg
= INTEL_INFO(dev
)->gen
>= 4 ? MCHBAR_I965
: MCHBAR_I915
;
452 if (IS_VALLEYVIEW(dev
) || IS_CHERRYVIEW(dev
))
455 dev_priv
->mchbar_need_disable
= false;
457 if (IS_I915G(dev
) || IS_I915GM(dev
)) {
458 pci_read_config_dword(dev_priv
->bridge_dev
, DEVEN
, &temp
);
459 enabled
= !!(temp
& DEVEN_MCHBAR_EN
);
461 pci_read_config_dword(dev_priv
->bridge_dev
, mchbar_reg
, &temp
);
465 /* If it's already enabled, don't have to do anything */
469 if (intel_alloc_mchbar_resource(dev
))
472 dev_priv
->mchbar_need_disable
= true;
474 /* Space is allocated or reserved, so enable it. */
475 if (IS_I915G(dev
) || IS_I915GM(dev
)) {
476 pci_write_config_dword(dev_priv
->bridge_dev
, DEVEN
,
477 temp
| DEVEN_MCHBAR_EN
);
479 pci_read_config_dword(dev_priv
->bridge_dev
, mchbar_reg
, &temp
);
480 pci_write_config_dword(dev_priv
->bridge_dev
, mchbar_reg
, temp
| 1);
485 intel_teardown_mchbar(struct drm_device
*dev
)
487 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
488 int mchbar_reg
= INTEL_INFO(dev
)->gen
>= 4 ? MCHBAR_I965
: MCHBAR_I915
;
490 if (dev_priv
->mchbar_need_disable
) {
491 if (IS_I915G(dev
) || IS_I915GM(dev
)) {
494 pci_read_config_dword(dev_priv
->bridge_dev
, DEVEN
,
496 deven_val
&= ~DEVEN_MCHBAR_EN
;
497 pci_write_config_dword(dev_priv
->bridge_dev
, DEVEN
,
502 pci_read_config_dword(dev_priv
->bridge_dev
, mchbar_reg
,
505 pci_write_config_dword(dev_priv
->bridge_dev
, mchbar_reg
,
510 if (dev_priv
->mch_res
.start
)
511 release_resource(&dev_priv
->mch_res
);
514 /* true = enable decode, false = disable decoder */
515 static unsigned int i915_vga_set_decode(void *cookie
, bool state
)
517 struct drm_device
*dev
= cookie
;
519 intel_modeset_vga_set_state(dev
, state
);
521 return VGA_RSRC_LEGACY_IO
| VGA_RSRC_LEGACY_MEM
|
522 VGA_RSRC_NORMAL_IO
| VGA_RSRC_NORMAL_MEM
;
524 return VGA_RSRC_NORMAL_IO
| VGA_RSRC_NORMAL_MEM
;
527 static void i915_switcheroo_set_state(struct pci_dev
*pdev
, enum vga_switcheroo_state state
)
529 struct drm_device
*dev
= pci_get_drvdata(pdev
);
530 pm_message_t pmm
= { .event
= PM_EVENT_SUSPEND
};
532 if (state
== VGA_SWITCHEROO_ON
) {
533 pr_info("switched on\n");
534 dev
->switch_power_state
= DRM_SWITCH_POWER_CHANGING
;
535 /* i915 resume handler doesn't set to D0 */
536 pci_set_power_state(dev
->pdev
, PCI_D0
);
537 i915_resume_switcheroo(dev
);
538 dev
->switch_power_state
= DRM_SWITCH_POWER_ON
;
540 pr_info("switched off\n");
541 dev
->switch_power_state
= DRM_SWITCH_POWER_CHANGING
;
542 i915_suspend_switcheroo(dev
, pmm
);
543 dev
->switch_power_state
= DRM_SWITCH_POWER_OFF
;
547 static bool i915_switcheroo_can_switch(struct pci_dev
*pdev
)
549 struct drm_device
*dev
= pci_get_drvdata(pdev
);
552 * FIXME: open_count is protected by drm_global_mutex but that would lead to
553 * locking inversion with the driver load path. And the access here is
554 * completely racy anyway. So don't bother with locking for now.
556 return dev
->open_count
== 0;
559 static const struct vga_switcheroo_client_ops i915_switcheroo_ops
= {
560 .set_gpu_state
= i915_switcheroo_set_state
,
562 .can_switch
= i915_switcheroo_can_switch
,
565 static void i915_gem_fini(struct drm_device
*dev
)
567 struct drm_i915_private
*dev_priv
= to_i915(dev
);
570 * Neither the BIOS, ourselves or any other kernel
571 * expects the system to be in execlists mode on startup,
572 * so we need to reset the GPU back to legacy mode. And the only
573 * known way to disable logical contexts is through a GPU reset.
575 * So in order to leave the system in a known default configuration,
576 * always reset the GPU upon unload. Afterwards we then clean up the
577 * GEM state tracking, flushing off the requests and leaving the
578 * system in a known idle state.
580 * Note that is of the upmost importance that the GPU is idle and
581 * all stray writes are flushed *before* we dismantle the backing
582 * storage for the pinned objects.
584 * However, since we are uncertain that reseting the GPU on older
585 * machines is a good idea, we don't - just in case it leaves the
586 * machine in an unusable condition.
588 if (HAS_HW_CONTEXTS(dev
)) {
589 int reset
= intel_gpu_reset(dev_priv
, ALL_ENGINES
);
590 WARN_ON(reset
&& reset
!= -ENODEV
);
593 mutex_lock(&dev
->struct_mutex
);
595 i915_gem_cleanup_engines(dev
);
596 i915_gem_context_fini(dev
);
597 mutex_unlock(&dev
->struct_mutex
);
599 WARN_ON(!list_empty(&to_i915(dev
)->context_list
));
602 static int i915_load_modeset_init(struct drm_device
*dev
)
604 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
607 if (i915_inject_load_failure())
610 ret
= intel_bios_init(dev_priv
);
612 DRM_INFO("failed to find VBIOS tables\n");
614 /* If we have > 1 VGA cards, then we need to arbitrate access
615 * to the common VGA resources.
617 * If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA),
618 * then we do not take part in VGA arbitration and the
619 * vga_client_register() fails with -ENODEV.
621 ret
= vga_client_register(dev
->pdev
, dev
, NULL
, i915_vga_set_decode
);
622 if (ret
&& ret
!= -ENODEV
)
625 intel_register_dsm_handler();
627 ret
= vga_switcheroo_register_client(dev
->pdev
, &i915_switcheroo_ops
, false);
629 goto cleanup_vga_client
;
631 /* must happen before intel_power_domains_init_hw() on VLV/CHV */
632 intel_update_rawclk(dev_priv
);
634 intel_power_domains_init_hw(dev_priv
, false);
636 intel_csr_ucode_init(dev_priv
);
638 ret
= intel_irq_install(dev_priv
);
642 intel_setup_gmbus(dev
);
644 /* Important: The output setup functions called by modeset_init need
645 * working irqs for e.g. gmbus and dp aux transfers. */
646 intel_modeset_init(dev
);
650 ret
= i915_gem_init(dev
);
654 intel_modeset_gem_init(dev
);
656 if (INTEL_INFO(dev
)->num_pipes
== 0)
659 ret
= intel_fbdev_init(dev
);
663 /* Only enable hotplug handling once the fbdev is fully set up. */
664 intel_hpd_init(dev_priv
);
666 drm_kms_helper_poll_init(dev
);
674 drm_irq_uninstall(dev
);
675 intel_teardown_gmbus(dev
);
677 intel_csr_ucode_fini(dev_priv
);
678 intel_power_domains_fini(dev_priv
);
679 vga_switcheroo_unregister_client(dev
->pdev
);
681 vga_client_register(dev
->pdev
, NULL
, NULL
, NULL
);
686 #if IS_ENABLED(CONFIG_FB)
687 static int i915_kick_out_firmware_fb(struct drm_i915_private
*dev_priv
)
689 struct apertures_struct
*ap
;
690 struct pci_dev
*pdev
= dev_priv
->dev
->pdev
;
691 struct i915_ggtt
*ggtt
= &dev_priv
->ggtt
;
695 ap
= alloc_apertures(1);
699 ap
->ranges
[0].base
= ggtt
->mappable_base
;
700 ap
->ranges
[0].size
= ggtt
->mappable_end
;
703 pdev
->resource
[PCI_ROM_RESOURCE
].flags
& IORESOURCE_ROM_SHADOW
;
705 ret
= remove_conflicting_framebuffers(ap
, "inteldrmfb", primary
);
712 static int i915_kick_out_firmware_fb(struct drm_i915_private
*dev_priv
)
718 #if !defined(CONFIG_VGA_CONSOLE)
719 static int i915_kick_out_vgacon(struct drm_i915_private
*dev_priv
)
723 #elif !defined(CONFIG_DUMMY_CONSOLE)
724 static int i915_kick_out_vgacon(struct drm_i915_private
*dev_priv
)
729 static int i915_kick_out_vgacon(struct drm_i915_private
*dev_priv
)
733 DRM_INFO("Replacing VGA console driver\n");
736 if (con_is_bound(&vga_con
))
737 ret
= do_take_over_console(&dummy_con
, 0, MAX_NR_CONSOLES
- 1, 1);
739 ret
= do_unregister_con_driver(&vga_con
);
741 /* Ignore "already unregistered". */
751 static void i915_dump_device_info(struct drm_i915_private
*dev_priv
)
753 const struct intel_device_info
*info
= &dev_priv
->info
;
755 #define PRINT_S(name) "%s"
757 #define PRINT_FLAG(name) info->name ? #name "," : ""
759 DRM_DEBUG_DRIVER("i915 device info: gen=%i, pciid=0x%04x rev=0x%02x flags="
760 DEV_INFO_FOR_EACH_FLAG(PRINT_S
, SEP_EMPTY
),
762 dev_priv
->dev
->pdev
->device
,
763 dev_priv
->dev
->pdev
->revision
,
764 DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG
, SEP_COMMA
));
771 static void cherryview_sseu_info_init(struct drm_device
*dev
)
773 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
774 struct intel_device_info
*info
;
777 info
= (struct intel_device_info
*)&dev_priv
->info
;
778 fuse
= I915_READ(CHV_FUSE_GT
);
780 info
->slice_total
= 1;
782 if (!(fuse
& CHV_FGT_DISABLE_SS0
)) {
783 info
->subslice_per_slice
++;
784 eu_dis
= fuse
& (CHV_FGT_EU_DIS_SS0_R0_MASK
|
785 CHV_FGT_EU_DIS_SS0_R1_MASK
);
786 info
->eu_total
+= 8 - hweight32(eu_dis
);
789 if (!(fuse
& CHV_FGT_DISABLE_SS1
)) {
790 info
->subslice_per_slice
++;
791 eu_dis
= fuse
& (CHV_FGT_EU_DIS_SS1_R0_MASK
|
792 CHV_FGT_EU_DIS_SS1_R1_MASK
);
793 info
->eu_total
+= 8 - hweight32(eu_dis
);
796 info
->subslice_total
= info
->subslice_per_slice
;
798 * CHV expected to always have a uniform distribution of EU
801 info
->eu_per_subslice
= info
->subslice_total
?
802 info
->eu_total
/ info
->subslice_total
:
805 * CHV supports subslice power gating on devices with more than
806 * one subslice, and supports EU power gating on devices with
807 * more than one EU pair per subslice.
809 info
->has_slice_pg
= 0;
810 info
->has_subslice_pg
= (info
->subslice_total
> 1);
811 info
->has_eu_pg
= (info
->eu_per_subslice
> 2);
814 static void gen9_sseu_info_init(struct drm_device
*dev
)
816 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
817 struct intel_device_info
*info
;
818 int s_max
= 3, ss_max
= 4, eu_max
= 8;
820 u32 fuse2
, s_enable
, ss_disable
, eu_disable
;
823 info
= (struct intel_device_info
*)&dev_priv
->info
;
824 fuse2
= I915_READ(GEN8_FUSE2
);
825 s_enable
= (fuse2
& GEN8_F2_S_ENA_MASK
) >>
827 ss_disable
= (fuse2
& GEN9_F2_SS_DIS_MASK
) >>
828 GEN9_F2_SS_DIS_SHIFT
;
830 info
->slice_total
= hweight32(s_enable
);
832 * The subslice disable field is global, i.e. it applies
833 * to each of the enabled slices.
835 info
->subslice_per_slice
= ss_max
- hweight32(ss_disable
);
836 info
->subslice_total
= info
->slice_total
*
837 info
->subslice_per_slice
;
840 * Iterate through enabled slices and subslices to
841 * count the total enabled EU.
843 for (s
= 0; s
< s_max
; s
++) {
844 if (!(s_enable
& (0x1 << s
)))
845 /* skip disabled slice */
848 eu_disable
= I915_READ(GEN9_EU_DISABLE(s
));
849 for (ss
= 0; ss
< ss_max
; ss
++) {
852 if (ss_disable
& (0x1 << ss
))
853 /* skip disabled subslice */
856 eu_per_ss
= eu_max
- hweight8((eu_disable
>> (ss
*8)) &
860 * Record which subslice(s) has(have) 7 EUs. we
861 * can tune the hash used to spread work among
862 * subslices if they are unbalanced.
865 info
->subslice_7eu
[s
] |= 1 << ss
;
867 info
->eu_total
+= eu_per_ss
;
872 * SKL is expected to always have a uniform distribution
873 * of EU across subslices with the exception that any one
874 * EU in any one subslice may be fused off for die
875 * recovery. BXT is expected to be perfectly uniform in EU
878 info
->eu_per_subslice
= info
->subslice_total
?
879 DIV_ROUND_UP(info
->eu_total
,
880 info
->subslice_total
) : 0;
882 * SKL supports slice power gating on devices with more than
883 * one slice, and supports EU power gating on devices with
884 * more than one EU pair per subslice. BXT supports subslice
885 * power gating on devices with more than one subslice, and
886 * supports EU power gating on devices with more than one EU
889 info
->has_slice_pg
= ((IS_SKYLAKE(dev
) || IS_KABYLAKE(dev
)) &&
890 (info
->slice_total
> 1));
891 info
->has_subslice_pg
= (IS_BROXTON(dev
) && (info
->subslice_total
> 1));
892 info
->has_eu_pg
= (info
->eu_per_subslice
> 2);
894 if (IS_BROXTON(dev
)) {
895 #define IS_SS_DISABLED(_ss_disable, ss) (_ss_disable & (0x1 << ss))
897 * There is a HW issue in 2x6 fused down parts that requires
898 * Pooled EU to be enabled as a WA. The pool configuration
899 * changes depending upon which subslice is fused down. This
900 * doesn't affect if the device has all 3 subslices enabled.
902 /* WaEnablePooledEuFor2x6:bxt */
903 info
->has_pooled_eu
= ((info
->subslice_per_slice
== 3) ||
904 (info
->subslice_per_slice
== 2 &&
905 INTEL_REVID(dev
) < BXT_REVID_C0
));
907 info
->min_eu_in_pool
= 0;
908 if (info
->has_pooled_eu
) {
909 if (IS_SS_DISABLED(ss_disable
, 0) ||
910 IS_SS_DISABLED(ss_disable
, 2))
911 info
->min_eu_in_pool
= 3;
912 else if (IS_SS_DISABLED(ss_disable
, 1))
913 info
->min_eu_in_pool
= 6;
915 info
->min_eu_in_pool
= 9;
917 #undef IS_SS_DISABLED
921 static void broadwell_sseu_info_init(struct drm_device
*dev
)
923 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
924 struct intel_device_info
*info
;
925 const int s_max
= 3, ss_max
= 3, eu_max
= 8;
927 u32 fuse2
, eu_disable
[s_max
], s_enable
, ss_disable
;
929 fuse2
= I915_READ(GEN8_FUSE2
);
930 s_enable
= (fuse2
& GEN8_F2_S_ENA_MASK
) >> GEN8_F2_S_ENA_SHIFT
;
931 ss_disable
= (fuse2
& GEN8_F2_SS_DIS_MASK
) >> GEN8_F2_SS_DIS_SHIFT
;
933 eu_disable
[0] = I915_READ(GEN8_EU_DISABLE0
) & GEN8_EU_DIS0_S0_MASK
;
934 eu_disable
[1] = (I915_READ(GEN8_EU_DISABLE0
) >> GEN8_EU_DIS0_S1_SHIFT
) |
935 ((I915_READ(GEN8_EU_DISABLE1
) & GEN8_EU_DIS1_S1_MASK
) <<
936 (32 - GEN8_EU_DIS0_S1_SHIFT
));
937 eu_disable
[2] = (I915_READ(GEN8_EU_DISABLE1
) >> GEN8_EU_DIS1_S2_SHIFT
) |
938 ((I915_READ(GEN8_EU_DISABLE2
) & GEN8_EU_DIS2_S2_MASK
) <<
939 (32 - GEN8_EU_DIS1_S2_SHIFT
));
942 info
= (struct intel_device_info
*)&dev_priv
->info
;
943 info
->slice_total
= hweight32(s_enable
);
946 * The subslice disable field is global, i.e. it applies
947 * to each of the enabled slices.
949 info
->subslice_per_slice
= ss_max
- hweight32(ss_disable
);
950 info
->subslice_total
= info
->slice_total
* info
->subslice_per_slice
;
953 * Iterate through enabled slices and subslices to
954 * count the total enabled EU.
956 for (s
= 0; s
< s_max
; s
++) {
957 if (!(s_enable
& (0x1 << s
)))
958 /* skip disabled slice */
961 for (ss
= 0; ss
< ss_max
; ss
++) {
964 if (ss_disable
& (0x1 << ss
))
965 /* skip disabled subslice */
968 n_disabled
= hweight8(eu_disable
[s
] >> (ss
* eu_max
));
971 * Record which subslices have 7 EUs.
973 if (eu_max
- n_disabled
== 7)
974 info
->subslice_7eu
[s
] |= 1 << ss
;
976 info
->eu_total
+= eu_max
- n_disabled
;
981 * BDW is expected to always have a uniform distribution of EU across
982 * subslices with the exception that any one EU in any one subslice may
983 * be fused off for die recovery.
985 info
->eu_per_subslice
= info
->subslice_total
?
986 DIV_ROUND_UP(info
->eu_total
, info
->subslice_total
) : 0;
989 * BDW supports slice power gating on devices with more than
992 info
->has_slice_pg
= (info
->slice_total
> 1);
993 info
->has_subslice_pg
= 0;
998 * Determine various intel_device_info fields at runtime.
1000 * Use it when either:
1001 * - it's judged too laborious to fill n static structures with the limit
1002 * when a simple if statement does the job,
1003 * - run-time checks (eg read fuse/strap registers) are needed.
1005 * This function needs to be called:
1006 * - after the MMIO has been setup as we are reading registers,
1007 * - after the PCH has been detected,
1008 * - before the first usage of the fields it can tweak.
1010 static void intel_device_info_runtime_init(struct drm_device
*dev
)
1012 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1013 struct intel_device_info
*info
;
1016 info
= (struct intel_device_info
*)&dev_priv
->info
;
1019 * Skylake and Broxton currently don't expose the topmost plane as its
1020 * use is exclusive with the legacy cursor and we only want to expose
1021 * one of those, not both. Until we can safely expose the topmost plane
1022 * as a DRM_PLANE_TYPE_CURSOR with all the features exposed/supported,
1023 * we don't expose the topmost plane at all to prevent ABI breakage
1026 if (IS_BROXTON(dev
)) {
1027 info
->num_sprites
[PIPE_A
] = 2;
1028 info
->num_sprites
[PIPE_B
] = 2;
1029 info
->num_sprites
[PIPE_C
] = 1;
1030 } else if (IS_VALLEYVIEW(dev
) || IS_CHERRYVIEW(dev
))
1031 for_each_pipe(dev_priv
, pipe
)
1032 info
->num_sprites
[pipe
] = 2;
1034 for_each_pipe(dev_priv
, pipe
)
1035 info
->num_sprites
[pipe
] = 1;
1037 if (i915
.disable_display
) {
1038 DRM_INFO("Display disabled (module parameter)\n");
1039 info
->num_pipes
= 0;
1040 } else if (info
->num_pipes
> 0 &&
1041 (IS_GEN7(dev_priv
) || IS_GEN8(dev_priv
)) &&
1042 HAS_PCH_SPLIT(dev
)) {
1043 u32 fuse_strap
= I915_READ(FUSE_STRAP
);
1044 u32 sfuse_strap
= I915_READ(SFUSE_STRAP
);
1047 * SFUSE_STRAP is supposed to have a bit signalling the display
1048 * is fused off. Unfortunately it seems that, at least in
1049 * certain cases, fused off display means that PCH display
1050 * reads don't land anywhere. In that case, we read 0s.
1052 * On CPT/PPT, we can detect this case as SFUSE_STRAP_FUSE_LOCK
1053 * should be set when taking over after the firmware.
1055 if (fuse_strap
& ILK_INTERNAL_DISPLAY_DISABLE
||
1056 sfuse_strap
& SFUSE_STRAP_DISPLAY_DISABLED
||
1057 (dev_priv
->pch_type
== PCH_CPT
&&
1058 !(sfuse_strap
& SFUSE_STRAP_FUSE_LOCK
))) {
1059 DRM_INFO("Display fused off, disabling\n");
1060 info
->num_pipes
= 0;
1061 } else if (fuse_strap
& IVB_PIPE_C_DISABLE
) {
1062 DRM_INFO("PipeC fused off\n");
1063 info
->num_pipes
-= 1;
1065 } else if (info
->num_pipes
> 0 && IS_GEN9(dev_priv
)) {
1066 u32 dfsm
= I915_READ(SKL_DFSM
);
1067 u8 disabled_mask
= 0;
1071 if (dfsm
& SKL_DFSM_PIPE_A_DISABLE
)
1072 disabled_mask
|= BIT(PIPE_A
);
1073 if (dfsm
& SKL_DFSM_PIPE_B_DISABLE
)
1074 disabled_mask
|= BIT(PIPE_B
);
1075 if (dfsm
& SKL_DFSM_PIPE_C_DISABLE
)
1076 disabled_mask
|= BIT(PIPE_C
);
1078 num_bits
= hweight8(disabled_mask
);
1080 switch (disabled_mask
) {
1083 case BIT(PIPE_A
) | BIT(PIPE_B
):
1084 case BIT(PIPE_A
) | BIT(PIPE_C
):
1091 if (num_bits
> info
->num_pipes
|| invalid
)
1092 DRM_ERROR("invalid pipe fuse configuration: 0x%x\n",
1095 info
->num_pipes
-= num_bits
;
1098 /* Initialize slice/subslice/EU info */
1099 if (IS_CHERRYVIEW(dev
))
1100 cherryview_sseu_info_init(dev
);
1101 else if (IS_BROADWELL(dev
))
1102 broadwell_sseu_info_init(dev
);
1103 else if (INTEL_INFO(dev
)->gen
>= 9)
1104 gen9_sseu_info_init(dev
);
1106 info
->has_snoop
= !info
->has_llc
;
1108 /* Snooping is broken on BXT A stepping. */
1109 if (IS_BXT_REVID(dev
, 0, BXT_REVID_A1
))
1110 info
->has_snoop
= false;
1112 DRM_DEBUG_DRIVER("slice total: %u\n", info
->slice_total
);
1113 DRM_DEBUG_DRIVER("subslice total: %u\n", info
->subslice_total
);
1114 DRM_DEBUG_DRIVER("subslice per slice: %u\n", info
->subslice_per_slice
);
1115 DRM_DEBUG_DRIVER("EU total: %u\n", info
->eu_total
);
1116 DRM_DEBUG_DRIVER("EU per subslice: %u\n", info
->eu_per_subslice
);
1117 DRM_DEBUG_DRIVER("has slice power gating: %s\n",
1118 info
->has_slice_pg
? "y" : "n");
1119 DRM_DEBUG_DRIVER("has subslice power gating: %s\n",
1120 info
->has_subslice_pg
? "y" : "n");
1121 DRM_DEBUG_DRIVER("has EU power gating: %s\n",
1122 info
->has_eu_pg
? "y" : "n");
1124 i915
.enable_execlists
=
1125 intel_sanitize_enable_execlists(dev_priv
,
1126 i915
.enable_execlists
);
1129 * i915.enable_ppgtt is read-only, so do an early pass to validate the
1130 * user's requested state against the hardware/driver capabilities. We
1131 * do this now so that we can print out any log messages once rather
1132 * than every time we check intel_enable_ppgtt().
1135 intel_sanitize_enable_ppgtt(dev_priv
, i915
.enable_ppgtt
);
1136 DRM_DEBUG_DRIVER("ppgtt mode: %i\n", i915
.enable_ppgtt
);
1139 static void intel_init_dpio(struct drm_i915_private
*dev_priv
)
1142 * IOSF_PORT_DPIO is used for VLV x2 PHY (DP/HDMI B and C),
1143 * CHV x1 PHY (DP/HDMI D)
1144 * IOSF_PORT_DPIO_2 is used for CHV x2 PHY (DP/HDMI B and C)
1146 if (IS_CHERRYVIEW(dev_priv
)) {
1147 DPIO_PHY_IOSF_PORT(DPIO_PHY0
) = IOSF_PORT_DPIO_2
;
1148 DPIO_PHY_IOSF_PORT(DPIO_PHY1
) = IOSF_PORT_DPIO
;
1149 } else if (IS_VALLEYVIEW(dev_priv
)) {
1150 DPIO_PHY_IOSF_PORT(DPIO_PHY0
) = IOSF_PORT_DPIO
;
1154 static int i915_workqueues_init(struct drm_i915_private
*dev_priv
)
1157 * The i915 workqueue is primarily used for batched retirement of
1158 * requests (and thus managing bo) once the task has been completed
1159 * by the GPU. i915_gem_retire_requests() is called directly when we
1160 * need high-priority retirement, such as waiting for an explicit
1163 * It is also used for periodic low-priority events, such as
1164 * idle-timers and recording error state.
1166 * All tasks on the workqueue are expected to acquire the dev mutex
1167 * so there is no point in running more than one instance of the
1168 * workqueue at any time. Use an ordered one.
1170 dev_priv
->wq
= alloc_ordered_workqueue("i915", 0);
1171 if (dev_priv
->wq
== NULL
)
1174 dev_priv
->hotplug
.dp_wq
= alloc_ordered_workqueue("i915-dp", 0);
1175 if (dev_priv
->hotplug
.dp_wq
== NULL
)
1181 destroy_workqueue(dev_priv
->wq
);
1183 DRM_ERROR("Failed to allocate workqueues.\n");
1188 static void i915_workqueues_cleanup(struct drm_i915_private
*dev_priv
)
1190 destroy_workqueue(dev_priv
->hotplug
.dp_wq
);
1191 destroy_workqueue(dev_priv
->wq
);
1195 * i915_driver_init_early - setup state not requiring device access
1196 * @dev_priv: device private
1198 * Initialize everything that is a "SW-only" state, that is state not
1199 * requiring accessing the device or exposing the driver via kernel internal
1200 * or userspace interfaces. Example steps belonging here: lock initialization,
1201 * system memory allocation, setting up device specific attributes and
1202 * function hooks not requiring accessing the device.
1204 static int i915_driver_init_early(struct drm_i915_private
*dev_priv
,
1205 const struct pci_device_id
*ent
)
1207 const struct intel_device_info
*match_info
=
1208 (struct intel_device_info
*)ent
->driver_data
;
1209 struct intel_device_info
*device_info
;
1212 if (i915_inject_load_failure())
1215 /* Setup the write-once "constant" device info */
1216 device_info
= (struct intel_device_info
*)&dev_priv
->info
;
1217 memcpy(device_info
, match_info
, sizeof(*device_info
));
1218 device_info
->device_id
= dev_priv
->drm
.pdev
->device
;
1220 BUG_ON(device_info
->gen
> sizeof(device_info
->gen_mask
) * BITS_PER_BYTE
);
1221 device_info
->gen_mask
= BIT(device_info
->gen
- 1);
1223 spin_lock_init(&dev_priv
->irq_lock
);
1224 spin_lock_init(&dev_priv
->gpu_error
.lock
);
1225 mutex_init(&dev_priv
->backlight_lock
);
1226 spin_lock_init(&dev_priv
->uncore
.lock
);
1227 spin_lock_init(&dev_priv
->mm
.object_stat_lock
);
1228 spin_lock_init(&dev_priv
->mmio_flip_lock
);
1229 mutex_init(&dev_priv
->sb_lock
);
1230 mutex_init(&dev_priv
->modeset_restore_lock
);
1231 mutex_init(&dev_priv
->av_mutex
);
1232 mutex_init(&dev_priv
->wm
.wm_mutex
);
1233 mutex_init(&dev_priv
->pps_mutex
);
1235 ret
= i915_workqueues_init(dev_priv
);
1239 ret
= intel_gvt_init(dev_priv
);
1241 goto err_workqueues
;
1243 /* This must be called before any calls to HAS_PCH_* */
1244 intel_detect_pch(&dev_priv
->drm
);
1246 intel_pm_setup(&dev_priv
->drm
);
1247 intel_init_dpio(dev_priv
);
1248 intel_power_domains_init(dev_priv
);
1249 intel_irq_init(dev_priv
);
1250 intel_init_display_hooks(dev_priv
);
1251 intel_init_clock_gating_hooks(dev_priv
);
1252 intel_init_audio_hooks(dev_priv
);
1253 i915_gem_load_init(&dev_priv
->drm
);
1255 intel_display_crc_init(&dev_priv
->drm
);
1257 i915_dump_device_info(dev_priv
);
1259 /* Not all pre-production machines fall into this category, only the
1260 * very first ones. Almost everything should work, except for maybe
1261 * suspend/resume. And we don't implement workarounds that affect only
1262 * pre-production machines. */
1263 if (IS_HSW_EARLY_SDV(dev_priv
))
1264 DRM_INFO("This is an early pre-production Haswell machine. "
1265 "It may not be fully functional.\n");
1270 i915_workqueues_cleanup(dev_priv
);
1275 * i915_driver_cleanup_early - cleanup the setup done in i915_driver_init_early()
1276 * @dev_priv: device private
1278 static void i915_driver_cleanup_early(struct drm_i915_private
*dev_priv
)
1280 i915_gem_load_cleanup(dev_priv
->dev
);
1281 i915_workqueues_cleanup(dev_priv
);
1284 static int i915_mmio_setup(struct drm_device
*dev
)
1286 struct drm_i915_private
*dev_priv
= to_i915(dev
);
1290 mmio_bar
= IS_GEN2(dev
) ? 1 : 0;
1292 * Before gen4, the registers and the GTT are behind different BARs.
1293 * However, from gen4 onwards, the registers and the GTT are shared
1294 * in the same BAR, so we want to restrict this ioremap from
1295 * clobbering the GTT which we want ioremap_wc instead. Fortunately,
1296 * the register BAR remains the same size for all the earlier
1297 * generations up to Ironlake.
1299 if (INTEL_INFO(dev
)->gen
< 5)
1300 mmio_size
= 512 * 1024;
1302 mmio_size
= 2 * 1024 * 1024;
1303 dev_priv
->regs
= pci_iomap(dev
->pdev
, mmio_bar
, mmio_size
);
1304 if (dev_priv
->regs
== NULL
) {
1305 DRM_ERROR("failed to map registers\n");
1310 /* Try to make sure MCHBAR is enabled before poking at it */
1311 intel_setup_mchbar(dev
);
1316 static void i915_mmio_cleanup(struct drm_device
*dev
)
1318 struct drm_i915_private
*dev_priv
= to_i915(dev
);
1320 intel_teardown_mchbar(dev
);
1321 pci_iounmap(dev
->pdev
, dev_priv
->regs
);
1325 * i915_driver_init_mmio - setup device MMIO
1326 * @dev_priv: device private
1328 * Setup minimal device state necessary for MMIO accesses later in the
1329 * initialization sequence. The setup here should avoid any other device-wide
1330 * side effects or exposing the driver via kernel internal or user space
1333 static int i915_driver_init_mmio(struct drm_i915_private
*dev_priv
)
1335 struct drm_device
*dev
= dev_priv
->dev
;
1338 if (i915_inject_load_failure())
1341 if (i915_get_bridge_dev(dev
))
1344 ret
= i915_mmio_setup(dev
);
1348 intel_uncore_init(dev_priv
);
1353 pci_dev_put(dev_priv
->bridge_dev
);
1359 * i915_driver_cleanup_mmio - cleanup the setup done in i915_driver_init_mmio()
1360 * @dev_priv: device private
1362 static void i915_driver_cleanup_mmio(struct drm_i915_private
*dev_priv
)
1364 struct drm_device
*dev
= dev_priv
->dev
;
1366 intel_uncore_fini(dev_priv
);
1367 i915_mmio_cleanup(dev
);
1368 pci_dev_put(dev_priv
->bridge_dev
);
1372 * i915_driver_init_hw - setup state requiring device access
1373 * @dev_priv: device private
1375 * Setup state that requires accessing the device, but doesn't require
1376 * exposing the driver via kernel internal or userspace interfaces.
1378 static int i915_driver_init_hw(struct drm_i915_private
*dev_priv
)
1380 struct drm_device
*dev
= dev_priv
->dev
;
1381 struct i915_ggtt
*ggtt
= &dev_priv
->ggtt
;
1382 uint32_t aperture_size
;
1385 if (i915_inject_load_failure())
1388 intel_device_info_runtime_init(dev
);
1390 ret
= i915_ggtt_init_hw(dev
);
1394 ret
= i915_ggtt_enable_hw(dev
);
1396 DRM_ERROR("failed to enable GGTT\n");
1400 /* WARNING: Apparently we must kick fbdev drivers before vgacon,
1401 * otherwise the vga fbdev driver falls over. */
1402 ret
= i915_kick_out_firmware_fb(dev_priv
);
1404 DRM_ERROR("failed to remove conflicting framebuffer drivers\n");
1408 ret
= i915_kick_out_vgacon(dev_priv
);
1410 DRM_ERROR("failed to remove conflicting VGA console\n");
1414 pci_set_master(dev
->pdev
);
1416 /* overlay on gen2 is broken and can't address above 1G */
1418 ret
= dma_set_coherent_mask(&dev
->pdev
->dev
, DMA_BIT_MASK(30));
1420 DRM_ERROR("failed to set DMA mask\n");
1427 /* 965GM sometimes incorrectly writes to hardware status page (HWS)
1428 * using 32bit addressing, overwriting memory if HWS is located
1431 * The documentation also mentions an issue with undefined
1432 * behaviour if any general state is accessed within a page above 4GB,
1433 * which also needs to be handled carefully.
1435 if (IS_BROADWATER(dev
) || IS_CRESTLINE(dev
)) {
1436 ret
= dma_set_coherent_mask(&dev
->pdev
->dev
, DMA_BIT_MASK(32));
1439 DRM_ERROR("failed to set DMA mask\n");
1445 aperture_size
= ggtt
->mappable_end
;
1448 io_mapping_create_wc(ggtt
->mappable_base
,
1450 if (!ggtt
->mappable
) {
1455 ggtt
->mtrr
= arch_phys_wc_add(ggtt
->mappable_base
,
1458 pm_qos_add_request(&dev_priv
->pm_qos
, PM_QOS_CPU_DMA_LATENCY
,
1459 PM_QOS_DEFAULT_VALUE
);
1461 intel_uncore_sanitize(dev_priv
);
1463 intel_opregion_setup(dev_priv
);
1465 i915_gem_load_init_fences(dev_priv
);
1467 /* On the 945G/GM, the chipset reports the MSI capability on the
1468 * integrated graphics even though the support isn't actually there
1469 * according to the published specs. It doesn't appear to function
1470 * correctly in testing on 945G.
1471 * This may be a side effect of MSI having been made available for PEG
1472 * and the registers being closely associated.
1474 * According to chipset errata, on the 965GM, MSI interrupts may
1475 * be lost or delayed, but we use them anyways to avoid
1476 * stuck interrupts on some machines.
1478 if (!IS_I945G(dev
) && !IS_I945GM(dev
)) {
1479 if (pci_enable_msi(dev
->pdev
) < 0)
1480 DRM_DEBUG_DRIVER("can't enable MSI");
1486 i915_ggtt_cleanup_hw(dev
);
1492 * i915_driver_cleanup_hw - cleanup the setup done in i915_driver_init_hw()
1493 * @dev_priv: device private
1495 static void i915_driver_cleanup_hw(struct drm_i915_private
*dev_priv
)
1497 struct drm_device
*dev
= dev_priv
->dev
;
1498 struct i915_ggtt
*ggtt
= &dev_priv
->ggtt
;
1500 if (dev
->pdev
->msi_enabled
)
1501 pci_disable_msi(dev
->pdev
);
1503 pm_qos_remove_request(&dev_priv
->pm_qos
);
1504 arch_phys_wc_del(ggtt
->mtrr
);
1505 io_mapping_free(ggtt
->mappable
);
1506 i915_ggtt_cleanup_hw(dev
);
1510 * i915_driver_register - register the driver with the rest of the system
1511 * @dev_priv: device private
1513 * Perform any steps necessary to make the driver available via kernel
1514 * internal or userspace interfaces.
1516 static void i915_driver_register(struct drm_i915_private
*dev_priv
)
1518 struct drm_device
*dev
= dev_priv
->dev
;
1520 i915_gem_shrinker_init(dev_priv
);
1523 * Notify a valid surface after modesetting,
1524 * when running inside a VM.
1526 if (intel_vgpu_active(dev_priv
))
1527 I915_WRITE(vgtif_reg(display_ready
), VGT_DRV_DISPLAY_READY
);
1529 /* Reveal our presence to userspace */
1530 if (drm_dev_register(dev
, 0) == 0) {
1531 i915_debugfs_register(dev_priv
);
1532 i915_setup_sysfs(dev
);
1534 DRM_ERROR("Failed to register driver for userspace access!\n");
1536 if (INTEL_INFO(dev_priv
)->num_pipes
) {
1537 /* Must be done after probing outputs */
1538 intel_opregion_register(dev_priv
);
1539 acpi_video_register();
1542 if (IS_GEN5(dev_priv
))
1543 intel_gpu_ips_init(dev_priv
);
1545 i915_audio_component_init(dev_priv
);
1548 * Some ports require correctly set-up hpd registers for detection to
1549 * work properly (leading to ghost connected connector status), e.g. VGA
1550 * on gm45. Hence we can only set up the initial fbdev config after hpd
1551 * irqs are fully enabled. We do it last so that the async config
1552 * cannot run before the connectors are registered.
1554 intel_fbdev_initial_config_async(dev
);
1558 * i915_driver_unregister - cleanup the registration done in i915_driver_regiser()
1559 * @dev_priv: device private
1561 static void i915_driver_unregister(struct drm_i915_private
*dev_priv
)
1563 i915_audio_component_cleanup(dev_priv
);
1565 intel_gpu_ips_teardown();
1566 acpi_video_unregister();
1567 intel_opregion_unregister(dev_priv
);
1569 i915_teardown_sysfs(dev_priv
->dev
);
1570 i915_debugfs_unregister(dev_priv
);
1571 drm_dev_unregister(dev_priv
->dev
);
1573 i915_gem_shrinker_cleanup(dev_priv
);
1577 * i915_driver_load - setup chip and create an initial config
1579 * @flags: startup flags
1581 * The driver load routine has to do several things:
1582 * - drive output discovery via intel_modeset_init()
1583 * - initialize the memory manager
1584 * - allocate initial config memory
1585 * - setup the DRM framebuffer with the allocated memory
1587 int i915_driver_load(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
1589 struct drm_i915_private
*dev_priv
;
1592 if (i915
.nuclear_pageflip
)
1593 driver
.driver_features
|= DRIVER_ATOMIC
;
1596 dev_priv
= kzalloc(sizeof(*dev_priv
), GFP_KERNEL
);
1598 ret
= drm_dev_init(&dev_priv
->drm
, &driver
, &pdev
->dev
);
1600 dev_printk(KERN_ERR
, &pdev
->dev
,
1601 "[" DRM_NAME
":%s] allocation failed\n", __func__
);
1606 /* Must be set before calling __i915_printk */
1607 dev_priv
->drm
.pdev
= pdev
;
1608 dev_priv
->drm
.dev_private
= dev_priv
;
1609 dev_priv
->dev
= &dev_priv
->drm
;
1611 ret
= pci_enable_device(pdev
);
1615 pci_set_drvdata(pdev
, &dev_priv
->drm
);
1617 ret
= i915_driver_init_early(dev_priv
, ent
);
1619 goto out_pci_disable
;
1621 intel_runtime_pm_get(dev_priv
);
1623 ret
= i915_driver_init_mmio(dev_priv
);
1625 goto out_runtime_pm_put
;
1627 ret
= i915_driver_init_hw(dev_priv
);
1629 goto out_cleanup_mmio
;
1632 * TODO: move the vblank init and parts of modeset init steps into one
1633 * of the i915_driver_init_/i915_driver_register functions according
1634 * to the role/effect of the given init step.
1636 if (INTEL_INFO(dev_priv
)->num_pipes
) {
1637 ret
= drm_vblank_init(dev_priv
->dev
,
1638 INTEL_INFO(dev_priv
)->num_pipes
);
1640 goto out_cleanup_hw
;
1643 ret
= i915_load_modeset_init(dev_priv
->dev
);
1645 goto out_cleanup_vblank
;
1647 i915_driver_register(dev_priv
);
1649 intel_runtime_pm_enable(dev_priv
);
1651 intel_runtime_pm_put(dev_priv
);
1656 drm_vblank_cleanup(dev_priv
->dev
);
1658 i915_driver_cleanup_hw(dev_priv
);
1660 i915_driver_cleanup_mmio(dev_priv
);
1662 intel_runtime_pm_put(dev_priv
);
1663 i915_driver_cleanup_early(dev_priv
);
1665 pci_disable_device(pdev
);
1667 i915_load_error(dev_priv
, "Device initialization failed (%d)\n", ret
);
1668 drm_dev_unref(&dev_priv
->drm
);
1672 void i915_driver_unload(struct drm_device
*dev
)
1674 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1676 intel_fbdev_fini(dev
);
1678 if (i915_gem_suspend(dev
))
1679 DRM_ERROR("failed to idle hardware; continuing to unload!\n");
1681 intel_display_power_get(dev_priv
, POWER_DOMAIN_INIT
);
1683 i915_driver_unregister(dev_priv
);
1685 drm_vblank_cleanup(dev
);
1687 intel_modeset_cleanup(dev
);
1690 * free the memory space allocated for the child device
1691 * config parsed from VBT
1693 if (dev_priv
->vbt
.child_dev
&& dev_priv
->vbt
.child_dev_num
) {
1694 kfree(dev_priv
->vbt
.child_dev
);
1695 dev_priv
->vbt
.child_dev
= NULL
;
1696 dev_priv
->vbt
.child_dev_num
= 0;
1698 kfree(dev_priv
->vbt
.sdvo_lvds_vbt_mode
);
1699 dev_priv
->vbt
.sdvo_lvds_vbt_mode
= NULL
;
1700 kfree(dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1701 dev_priv
->vbt
.lfp_lvds_vbt_mode
= NULL
;
1703 vga_switcheroo_unregister_client(dev
->pdev
);
1704 vga_client_register(dev
->pdev
, NULL
, NULL
, NULL
);
1706 intel_csr_ucode_fini(dev_priv
);
1708 /* Free error state after interrupts are fully disabled. */
1709 cancel_delayed_work_sync(&dev_priv
->gpu_error
.hangcheck_work
);
1710 i915_destroy_error_state(dev
);
1712 /* Flush any outstanding unpin_work. */
1713 flush_workqueue(dev_priv
->wq
);
1715 intel_guc_fini(dev
);
1717 intel_fbc_cleanup_cfb(dev_priv
);
1719 intel_power_domains_fini(dev_priv
);
1721 i915_driver_cleanup_hw(dev_priv
);
1722 i915_driver_cleanup_mmio(dev_priv
);
1724 intel_display_power_put(dev_priv
, POWER_DOMAIN_INIT
);
1726 i915_driver_cleanup_early(dev_priv
);
1729 static int i915_driver_open(struct drm_device
*dev
, struct drm_file
*file
)
1733 ret
= i915_gem_open(dev
, file
);
1741 * i915_driver_lastclose - clean up after all DRM clients have exited
1744 * Take care of cleaning up after all DRM clients have exited. In the
1745 * mode setting case, we want to restore the kernel's initial mode (just
1746 * in case the last client left us in a bad state).
1748 * Additionally, in the non-mode setting case, we'll tear down the GTT
1749 * and DMA structures, since the kernel won't be using them, and clea
1752 static void i915_driver_lastclose(struct drm_device
*dev
)
1754 intel_fbdev_restore_mode(dev
);
1755 vga_switcheroo_process_delayed_switch();
1758 static void i915_driver_preclose(struct drm_device
*dev
, struct drm_file
*file
)
1760 mutex_lock(&dev
->struct_mutex
);
1761 i915_gem_context_close(dev
, file
);
1762 i915_gem_release(dev
, file
);
1763 mutex_unlock(&dev
->struct_mutex
);
1766 static void i915_driver_postclose(struct drm_device
*dev
, struct drm_file
*file
)
1768 struct drm_i915_file_private
*file_priv
= file
->driver_priv
;
1773 static void intel_suspend_encoders(struct drm_i915_private
*dev_priv
)
1775 struct drm_device
*dev
= dev_priv
->dev
;
1776 struct intel_encoder
*encoder
;
1778 drm_modeset_lock_all(dev
);
1779 for_each_intel_encoder(dev
, encoder
)
1780 if (encoder
->suspend
)
1781 encoder
->suspend(encoder
);
1782 drm_modeset_unlock_all(dev
);
1785 static int vlv_resume_prepare(struct drm_i915_private
*dev_priv
,
1787 static int vlv_suspend_complete(struct drm_i915_private
*dev_priv
);
1789 static bool suspend_to_idle(struct drm_i915_private
*dev_priv
)
1791 #if IS_ENABLED(CONFIG_ACPI_SLEEP)
1792 if (acpi_target_system_state() < ACPI_STATE_S3
)
1798 static int i915_drm_suspend(struct drm_device
*dev
)
1800 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1801 pci_power_t opregion_target_state
;
1804 /* ignore lid events during suspend */
1805 mutex_lock(&dev_priv
->modeset_restore_lock
);
1806 dev_priv
->modeset_restore
= MODESET_SUSPENDED
;
1807 mutex_unlock(&dev_priv
->modeset_restore_lock
);
1809 disable_rpm_wakeref_asserts(dev_priv
);
1811 /* We do a lot of poking in a lot of registers, make sure they work
1813 intel_display_set_init_power(dev_priv
, true);
1815 drm_kms_helper_poll_disable(dev
);
1817 pci_save_state(dev
->pdev
);
1819 error
= i915_gem_suspend(dev
);
1821 dev_err(&dev
->pdev
->dev
,
1822 "GEM idle failed, resume might fail\n");
1826 intel_guc_suspend(dev
);
1828 intel_suspend_gt_powersave(dev_priv
);
1830 intel_display_suspend(dev
);
1832 intel_dp_mst_suspend(dev
);
1834 intel_runtime_pm_disable_interrupts(dev_priv
);
1835 intel_hpd_cancel_work(dev_priv
);
1837 intel_suspend_encoders(dev_priv
);
1839 intel_suspend_hw(dev
);
1841 i915_gem_suspend_gtt_mappings(dev
);
1843 i915_save_state(dev
);
1845 opregion_target_state
= suspend_to_idle(dev_priv
) ? PCI_D1
: PCI_D3cold
;
1846 intel_opregion_notify_adapter(dev_priv
, opregion_target_state
);
1848 intel_uncore_forcewake_reset(dev_priv
, false);
1849 intel_opregion_unregister(dev_priv
);
1851 intel_fbdev_set_suspend(dev
, FBINFO_STATE_SUSPENDED
, true);
1853 dev_priv
->suspend_count
++;
1855 intel_display_set_init_power(dev_priv
, false);
1857 intel_csr_ucode_suspend(dev_priv
);
1860 enable_rpm_wakeref_asserts(dev_priv
);
1865 static int i915_drm_suspend_late(struct drm_device
*drm_dev
, bool hibernation
)
1867 struct drm_i915_private
*dev_priv
= drm_dev
->dev_private
;
1871 disable_rpm_wakeref_asserts(dev_priv
);
1873 fw_csr
= !IS_BROXTON(dev_priv
) &&
1874 suspend_to_idle(dev_priv
) && dev_priv
->csr
.dmc_payload
;
1876 * In case of firmware assisted context save/restore don't manually
1877 * deinit the power domains. This also means the CSR/DMC firmware will
1878 * stay active, it will power down any HW resources as required and
1879 * also enable deeper system power states that would be blocked if the
1880 * firmware was inactive.
1883 intel_power_domains_suspend(dev_priv
);
1886 if (IS_BROXTON(dev_priv
))
1887 bxt_enable_dc9(dev_priv
);
1888 else if (IS_HASWELL(dev_priv
) || IS_BROADWELL(dev_priv
))
1889 hsw_enable_pc8(dev_priv
);
1890 else if (IS_VALLEYVIEW(dev_priv
) || IS_CHERRYVIEW(dev_priv
))
1891 ret
= vlv_suspend_complete(dev_priv
);
1894 DRM_ERROR("Suspend complete failed: %d\n", ret
);
1896 intel_power_domains_init_hw(dev_priv
, true);
1901 pci_disable_device(drm_dev
->pdev
);
1903 * During hibernation on some platforms the BIOS may try to access
1904 * the device even though it's already in D3 and hang the machine. So
1905 * leave the device in D0 on those platforms and hope the BIOS will
1906 * power down the device properly. The issue was seen on multiple old
1907 * GENs with different BIOS vendors, so having an explicit blacklist
1908 * is inpractical; apply the workaround on everything pre GEN6. The
1909 * platforms where the issue was seen:
1910 * Lenovo Thinkpad X301, X61s, X60, T60, X41
1914 if (!(hibernation
&& INTEL_INFO(dev_priv
)->gen
< 6))
1915 pci_set_power_state(drm_dev
->pdev
, PCI_D3hot
);
1917 dev_priv
->suspended_to_idle
= suspend_to_idle(dev_priv
);
1920 enable_rpm_wakeref_asserts(dev_priv
);
1925 int i915_suspend_switcheroo(struct drm_device
*dev
, pm_message_t state
)
1929 if (!dev
|| !dev
->dev_private
) {
1930 DRM_ERROR("dev: %p\n", dev
);
1931 DRM_ERROR("DRM not initialized, aborting suspend.\n");
1935 if (WARN_ON_ONCE(state
.event
!= PM_EVENT_SUSPEND
&&
1936 state
.event
!= PM_EVENT_FREEZE
))
1939 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
1942 error
= i915_drm_suspend(dev
);
1946 return i915_drm_suspend_late(dev
, false);
1949 static int i915_drm_resume(struct drm_device
*dev
)
1951 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1954 disable_rpm_wakeref_asserts(dev_priv
);
1956 ret
= i915_ggtt_enable_hw(dev
);
1958 DRM_ERROR("failed to re-enable GGTT\n");
1960 intel_csr_ucode_resume(dev_priv
);
1962 mutex_lock(&dev
->struct_mutex
);
1963 i915_gem_restore_gtt_mappings(dev
);
1964 mutex_unlock(&dev
->struct_mutex
);
1966 i915_restore_state(dev
);
1967 intel_opregion_setup(dev_priv
);
1969 intel_init_pch_refclk(dev
);
1970 drm_mode_config_reset(dev
);
1973 * Interrupts have to be enabled before any batches are run. If not the
1974 * GPU will hang. i915_gem_init_hw() will initiate batches to
1975 * update/restore the context.
1977 * Modeset enabling in intel_modeset_init_hw() also needs working
1980 intel_runtime_pm_enable_interrupts(dev_priv
);
1982 mutex_lock(&dev
->struct_mutex
);
1983 if (i915_gem_init_hw(dev
)) {
1984 DRM_ERROR("failed to re-initialize GPU, declaring wedged!\n");
1985 atomic_or(I915_WEDGED
, &dev_priv
->gpu_error
.reset_counter
);
1987 mutex_unlock(&dev
->struct_mutex
);
1989 intel_guc_resume(dev
);
1991 intel_modeset_init_hw(dev
);
1993 spin_lock_irq(&dev_priv
->irq_lock
);
1994 if (dev_priv
->display
.hpd_irq_setup
)
1995 dev_priv
->display
.hpd_irq_setup(dev_priv
);
1996 spin_unlock_irq(&dev_priv
->irq_lock
);
1998 intel_dp_mst_resume(dev
);
2000 intel_display_resume(dev
);
2003 * ... but also need to make sure that hotplug processing
2004 * doesn't cause havoc. Like in the driver load code we don't
2005 * bother with the tiny race here where we might loose hotplug
2008 intel_hpd_init(dev_priv
);
2009 /* Config may have changed between suspend and resume */
2010 drm_helper_hpd_irq_event(dev
);
2012 intel_opregion_register(dev_priv
);
2014 intel_fbdev_set_suspend(dev
, FBINFO_STATE_RUNNING
, false);
2016 mutex_lock(&dev_priv
->modeset_restore_lock
);
2017 dev_priv
->modeset_restore
= MODESET_DONE
;
2018 mutex_unlock(&dev_priv
->modeset_restore_lock
);
2020 intel_opregion_notify_adapter(dev_priv
, PCI_D0
);
2022 drm_kms_helper_poll_enable(dev
);
2024 enable_rpm_wakeref_asserts(dev_priv
);
2029 static int i915_drm_resume_early(struct drm_device
*dev
)
2031 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2035 * We have a resume ordering issue with the snd-hda driver also
2036 * requiring our device to be power up. Due to the lack of a
2037 * parent/child relationship we currently solve this with an early
2040 * FIXME: This should be solved with a special hdmi sink device or
2041 * similar so that power domains can be employed.
2045 * Note that we need to set the power state explicitly, since we
2046 * powered off the device during freeze and the PCI core won't power
2047 * it back up for us during thaw. Powering off the device during
2048 * freeze is not a hard requirement though, and during the
2049 * suspend/resume phases the PCI core makes sure we get here with the
2050 * device powered on. So in case we change our freeze logic and keep
2051 * the device powered we can also remove the following set power state
2054 ret
= pci_set_power_state(dev
->pdev
, PCI_D0
);
2056 DRM_ERROR("failed to set PCI D0 power state (%d)\n", ret
);
2061 * Note that pci_enable_device() first enables any parent bridge
2062 * device and only then sets the power state for this device. The
2063 * bridge enabling is a nop though, since bridge devices are resumed
2064 * first. The order of enabling power and enabling the device is
2065 * imposed by the PCI core as described above, so here we preserve the
2066 * same order for the freeze/thaw phases.
2068 * TODO: eventually we should remove pci_disable_device() /
2069 * pci_enable_enable_device() from suspend/resume. Due to how they
2070 * depend on the device enable refcount we can't anyway depend on them
2071 * disabling/enabling the device.
2073 if (pci_enable_device(dev
->pdev
)) {
2078 pci_set_master(dev
->pdev
);
2080 disable_rpm_wakeref_asserts(dev_priv
);
2082 if (IS_VALLEYVIEW(dev_priv
) || IS_CHERRYVIEW(dev_priv
))
2083 ret
= vlv_resume_prepare(dev_priv
, false);
2085 DRM_ERROR("Resume prepare failed: %d, continuing anyway\n",
2088 intel_uncore_early_sanitize(dev_priv
, true);
2090 if (IS_BROXTON(dev_priv
)) {
2091 if (!dev_priv
->suspended_to_idle
)
2092 gen9_sanitize_dc_state(dev_priv
);
2093 bxt_disable_dc9(dev_priv
);
2094 } else if (IS_HASWELL(dev_priv
) || IS_BROADWELL(dev_priv
)) {
2095 hsw_disable_pc8(dev_priv
);
2098 intel_uncore_sanitize(dev_priv
);
2100 if (IS_BROXTON(dev_priv
) ||
2101 !(dev_priv
->suspended_to_idle
&& dev_priv
->csr
.dmc_payload
))
2102 intel_power_domains_init_hw(dev_priv
, true);
2104 enable_rpm_wakeref_asserts(dev_priv
);
2107 dev_priv
->suspended_to_idle
= false;
2112 int i915_resume_switcheroo(struct drm_device
*dev
)
2116 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
2119 ret
= i915_drm_resume_early(dev
);
2123 return i915_drm_resume(dev
);
2127 * i915_reset - reset chip after a hang
2128 * @dev: drm device to reset
2130 * Reset the chip. Useful if a hang is detected. Returns zero on successful
2131 * reset or otherwise an error code.
2133 * Procedure is fairly simple:
2134 * - reset the chip using the reset reg
2135 * - re-init context state
2136 * - re-init hardware status page
2137 * - re-init ring buffer
2138 * - re-init interrupt state
2141 int i915_reset(struct drm_i915_private
*dev_priv
)
2143 struct drm_device
*dev
= dev_priv
->dev
;
2144 struct i915_gpu_error
*error
= &dev_priv
->gpu_error
;
2145 unsigned reset_counter
;
2148 intel_reset_gt_powersave(dev_priv
);
2150 mutex_lock(&dev
->struct_mutex
);
2152 /* Clear any previous failed attempts at recovery. Time to try again. */
2153 atomic_andnot(I915_WEDGED
, &error
->reset_counter
);
2155 /* Clear the reset-in-progress flag and increment the reset epoch. */
2156 reset_counter
= atomic_inc_return(&error
->reset_counter
);
2157 if (WARN_ON(__i915_reset_in_progress(reset_counter
))) {
2162 pr_notice("drm/i915: Resetting chip after gpu hang\n");
2164 i915_gem_reset(dev
);
2166 ret
= intel_gpu_reset(dev_priv
, ALL_ENGINES
);
2169 DRM_ERROR("Failed to reset chip: %i\n", ret
);
2171 DRM_DEBUG_DRIVER("GPU reset disabled\n");
2175 intel_overlay_reset(dev_priv
);
2177 /* Ok, now get things going again... */
2180 * Everything depends on having the GTT running, so we need to start
2181 * there. Fortunately we don't need to do this unless we reset the
2182 * chip at a PCI level.
2184 * Next we need to restore the context, but we don't use those
2187 * Ring buffer needs to be re-initialized in the KMS case, or if X
2188 * was running at the time of the reset (i.e. we weren't VT
2191 ret
= i915_gem_init_hw(dev
);
2193 DRM_ERROR("Failed hw init on reset %d\n", ret
);
2197 mutex_unlock(&dev
->struct_mutex
);
2200 * rps/rc6 re-init is necessary to restore state lost after the
2201 * reset and the re-install of gt irqs. Skip for ironlake per
2202 * previous concerns that it doesn't respond well to some forms
2203 * of re-init after reset.
2205 if (INTEL_INFO(dev
)->gen
> 5)
2206 intel_enable_gt_powersave(dev_priv
);
2211 atomic_or(I915_WEDGED
, &error
->reset_counter
);
2212 mutex_unlock(&dev
->struct_mutex
);
2216 static int i915_pm_suspend(struct device
*dev
)
2218 struct pci_dev
*pdev
= to_pci_dev(dev
);
2219 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
2221 if (!drm_dev
|| !drm_dev
->dev_private
) {
2222 dev_err(dev
, "DRM not initialized, aborting suspend.\n");
2226 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
2229 return i915_drm_suspend(drm_dev
);
2232 static int i915_pm_suspend_late(struct device
*dev
)
2234 struct drm_device
*drm_dev
= dev_to_i915(dev
)->dev
;
2237 * We have a suspend ordering issue with the snd-hda driver also
2238 * requiring our device to be power up. Due to the lack of a
2239 * parent/child relationship we currently solve this with an late
2242 * FIXME: This should be solved with a special hdmi sink device or
2243 * similar so that power domains can be employed.
2245 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
2248 return i915_drm_suspend_late(drm_dev
, false);
2251 static int i915_pm_poweroff_late(struct device
*dev
)
2253 struct drm_device
*drm_dev
= dev_to_i915(dev
)->dev
;
2255 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
2258 return i915_drm_suspend_late(drm_dev
, true);
2261 static int i915_pm_resume_early(struct device
*dev
)
2263 struct drm_device
*drm_dev
= dev_to_i915(dev
)->dev
;
2265 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
2268 return i915_drm_resume_early(drm_dev
);
2271 static int i915_pm_resume(struct device
*dev
)
2273 struct drm_device
*drm_dev
= dev_to_i915(dev
)->dev
;
2275 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
2278 return i915_drm_resume(drm_dev
);
2281 /* freeze: before creating the hibernation_image */
2282 static int i915_pm_freeze(struct device
*dev
)
2284 return i915_pm_suspend(dev
);
2287 static int i915_pm_freeze_late(struct device
*dev
)
2291 ret
= i915_pm_suspend_late(dev
);
2295 ret
= i915_gem_freeze_late(dev_to_i915(dev
));
2302 /* thaw: called after creating the hibernation image, but before turning off. */
2303 static int i915_pm_thaw_early(struct device
*dev
)
2305 return i915_pm_resume_early(dev
);
2308 static int i915_pm_thaw(struct device
*dev
)
2310 return i915_pm_resume(dev
);
2313 /* restore: called after loading the hibernation image. */
2314 static int i915_pm_restore_early(struct device
*dev
)
2316 return i915_pm_resume_early(dev
);
2319 static int i915_pm_restore(struct device
*dev
)
2321 return i915_pm_resume(dev
);
2325 * Save all Gunit registers that may be lost after a D3 and a subsequent
2326 * S0i[R123] transition. The list of registers needing a save/restore is
2327 * defined in the VLV2_S0IXRegs document. This documents marks all Gunit
2328 * registers in the following way:
2329 * - Driver: saved/restored by the driver
2330 * - Punit : saved/restored by the Punit firmware
2331 * - No, w/o marking: no need to save/restore, since the register is R/O or
2332 * used internally by the HW in a way that doesn't depend
2333 * keeping the content across a suspend/resume.
2334 * - Debug : used for debugging
2336 * We save/restore all registers marked with 'Driver', with the following
2338 * - Registers out of use, including also registers marked with 'Debug'.
2339 * These have no effect on the driver's operation, so we don't save/restore
2340 * them to reduce the overhead.
2341 * - Registers that are fully setup by an initialization function called from
2342 * the resume path. For example many clock gating and RPS/RC6 registers.
2343 * - Registers that provide the right functionality with their reset defaults.
2345 * TODO: Except for registers that based on the above 3 criteria can be safely
2346 * ignored, we save/restore all others, practically treating the HW context as
2347 * a black-box for the driver. Further investigation is needed to reduce the
2348 * saved/restored registers even further, by following the same 3 criteria.
2350 static void vlv_save_gunit_s0ix_state(struct drm_i915_private
*dev_priv
)
2352 struct vlv_s0ix_state
*s
= &dev_priv
->vlv_s0ix_state
;
2355 /* GAM 0x4000-0x4770 */
2356 s
->wr_watermark
= I915_READ(GEN7_WR_WATERMARK
);
2357 s
->gfx_prio_ctrl
= I915_READ(GEN7_GFX_PRIO_CTRL
);
2358 s
->arb_mode
= I915_READ(ARB_MODE
);
2359 s
->gfx_pend_tlb0
= I915_READ(GEN7_GFX_PEND_TLB0
);
2360 s
->gfx_pend_tlb1
= I915_READ(GEN7_GFX_PEND_TLB1
);
2362 for (i
= 0; i
< ARRAY_SIZE(s
->lra_limits
); i
++)
2363 s
->lra_limits
[i
] = I915_READ(GEN7_LRA_LIMITS(i
));
2365 s
->media_max_req_count
= I915_READ(GEN7_MEDIA_MAX_REQ_COUNT
);
2366 s
->gfx_max_req_count
= I915_READ(GEN7_GFX_MAX_REQ_COUNT
);
2368 s
->render_hwsp
= I915_READ(RENDER_HWS_PGA_GEN7
);
2369 s
->ecochk
= I915_READ(GAM_ECOCHK
);
2370 s
->bsd_hwsp
= I915_READ(BSD_HWS_PGA_GEN7
);
2371 s
->blt_hwsp
= I915_READ(BLT_HWS_PGA_GEN7
);
2373 s
->tlb_rd_addr
= I915_READ(GEN7_TLB_RD_ADDR
);
2375 /* MBC 0x9024-0x91D0, 0x8500 */
2376 s
->g3dctl
= I915_READ(VLV_G3DCTL
);
2377 s
->gsckgctl
= I915_READ(VLV_GSCKGCTL
);
2378 s
->mbctl
= I915_READ(GEN6_MBCTL
);
2380 /* GCP 0x9400-0x9424, 0x8100-0x810C */
2381 s
->ucgctl1
= I915_READ(GEN6_UCGCTL1
);
2382 s
->ucgctl3
= I915_READ(GEN6_UCGCTL3
);
2383 s
->rcgctl1
= I915_READ(GEN6_RCGCTL1
);
2384 s
->rcgctl2
= I915_READ(GEN6_RCGCTL2
);
2385 s
->rstctl
= I915_READ(GEN6_RSTCTL
);
2386 s
->misccpctl
= I915_READ(GEN7_MISCCPCTL
);
2388 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
2389 s
->gfxpause
= I915_READ(GEN6_GFXPAUSE
);
2390 s
->rpdeuhwtc
= I915_READ(GEN6_RPDEUHWTC
);
2391 s
->rpdeuc
= I915_READ(GEN6_RPDEUC
);
2392 s
->ecobus
= I915_READ(ECOBUS
);
2393 s
->pwrdwnupctl
= I915_READ(VLV_PWRDWNUPCTL
);
2394 s
->rp_down_timeout
= I915_READ(GEN6_RP_DOWN_TIMEOUT
);
2395 s
->rp_deucsw
= I915_READ(GEN6_RPDEUCSW
);
2396 s
->rcubmabdtmr
= I915_READ(GEN6_RCUBMABDTMR
);
2397 s
->rcedata
= I915_READ(VLV_RCEDATA
);
2398 s
->spare2gh
= I915_READ(VLV_SPAREG2H
);
2400 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
2401 s
->gt_imr
= I915_READ(GTIMR
);
2402 s
->gt_ier
= I915_READ(GTIER
);
2403 s
->pm_imr
= I915_READ(GEN6_PMIMR
);
2404 s
->pm_ier
= I915_READ(GEN6_PMIER
);
2406 for (i
= 0; i
< ARRAY_SIZE(s
->gt_scratch
); i
++)
2407 s
->gt_scratch
[i
] = I915_READ(GEN7_GT_SCRATCH(i
));
2409 /* GT SA CZ domain, 0x100000-0x138124 */
2410 s
->tilectl
= I915_READ(TILECTL
);
2411 s
->gt_fifoctl
= I915_READ(GTFIFOCTL
);
2412 s
->gtlc_wake_ctrl
= I915_READ(VLV_GTLC_WAKE_CTRL
);
2413 s
->gtlc_survive
= I915_READ(VLV_GTLC_SURVIVABILITY_REG
);
2414 s
->pmwgicz
= I915_READ(VLV_PMWGICZ
);
2416 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
2417 s
->gu_ctl0
= I915_READ(VLV_GU_CTL0
);
2418 s
->gu_ctl1
= I915_READ(VLV_GU_CTL1
);
2419 s
->pcbr
= I915_READ(VLV_PCBR
);
2420 s
->clock_gate_dis2
= I915_READ(VLV_GUNIT_CLOCK_GATE2
);
2423 * Not saving any of:
2424 * DFT, 0x9800-0x9EC0
2425 * SARB, 0xB000-0xB1FC
2426 * GAC, 0x5208-0x524C, 0x14000-0x14C000
2431 static void vlv_restore_gunit_s0ix_state(struct drm_i915_private
*dev_priv
)
2433 struct vlv_s0ix_state
*s
= &dev_priv
->vlv_s0ix_state
;
2437 /* GAM 0x4000-0x4770 */
2438 I915_WRITE(GEN7_WR_WATERMARK
, s
->wr_watermark
);
2439 I915_WRITE(GEN7_GFX_PRIO_CTRL
, s
->gfx_prio_ctrl
);
2440 I915_WRITE(ARB_MODE
, s
->arb_mode
| (0xffff << 16));
2441 I915_WRITE(GEN7_GFX_PEND_TLB0
, s
->gfx_pend_tlb0
);
2442 I915_WRITE(GEN7_GFX_PEND_TLB1
, s
->gfx_pend_tlb1
);
2444 for (i
= 0; i
< ARRAY_SIZE(s
->lra_limits
); i
++)
2445 I915_WRITE(GEN7_LRA_LIMITS(i
), s
->lra_limits
[i
]);
2447 I915_WRITE(GEN7_MEDIA_MAX_REQ_COUNT
, s
->media_max_req_count
);
2448 I915_WRITE(GEN7_GFX_MAX_REQ_COUNT
, s
->gfx_max_req_count
);
2450 I915_WRITE(RENDER_HWS_PGA_GEN7
, s
->render_hwsp
);
2451 I915_WRITE(GAM_ECOCHK
, s
->ecochk
);
2452 I915_WRITE(BSD_HWS_PGA_GEN7
, s
->bsd_hwsp
);
2453 I915_WRITE(BLT_HWS_PGA_GEN7
, s
->blt_hwsp
);
2455 I915_WRITE(GEN7_TLB_RD_ADDR
, s
->tlb_rd_addr
);
2457 /* MBC 0x9024-0x91D0, 0x8500 */
2458 I915_WRITE(VLV_G3DCTL
, s
->g3dctl
);
2459 I915_WRITE(VLV_GSCKGCTL
, s
->gsckgctl
);
2460 I915_WRITE(GEN6_MBCTL
, s
->mbctl
);
2462 /* GCP 0x9400-0x9424, 0x8100-0x810C */
2463 I915_WRITE(GEN6_UCGCTL1
, s
->ucgctl1
);
2464 I915_WRITE(GEN6_UCGCTL3
, s
->ucgctl3
);
2465 I915_WRITE(GEN6_RCGCTL1
, s
->rcgctl1
);
2466 I915_WRITE(GEN6_RCGCTL2
, s
->rcgctl2
);
2467 I915_WRITE(GEN6_RSTCTL
, s
->rstctl
);
2468 I915_WRITE(GEN7_MISCCPCTL
, s
->misccpctl
);
2470 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
2471 I915_WRITE(GEN6_GFXPAUSE
, s
->gfxpause
);
2472 I915_WRITE(GEN6_RPDEUHWTC
, s
->rpdeuhwtc
);
2473 I915_WRITE(GEN6_RPDEUC
, s
->rpdeuc
);
2474 I915_WRITE(ECOBUS
, s
->ecobus
);
2475 I915_WRITE(VLV_PWRDWNUPCTL
, s
->pwrdwnupctl
);
2476 I915_WRITE(GEN6_RP_DOWN_TIMEOUT
,s
->rp_down_timeout
);
2477 I915_WRITE(GEN6_RPDEUCSW
, s
->rp_deucsw
);
2478 I915_WRITE(GEN6_RCUBMABDTMR
, s
->rcubmabdtmr
);
2479 I915_WRITE(VLV_RCEDATA
, s
->rcedata
);
2480 I915_WRITE(VLV_SPAREG2H
, s
->spare2gh
);
2482 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
2483 I915_WRITE(GTIMR
, s
->gt_imr
);
2484 I915_WRITE(GTIER
, s
->gt_ier
);
2485 I915_WRITE(GEN6_PMIMR
, s
->pm_imr
);
2486 I915_WRITE(GEN6_PMIER
, s
->pm_ier
);
2488 for (i
= 0; i
< ARRAY_SIZE(s
->gt_scratch
); i
++)
2489 I915_WRITE(GEN7_GT_SCRATCH(i
), s
->gt_scratch
[i
]);
2491 /* GT SA CZ domain, 0x100000-0x138124 */
2492 I915_WRITE(TILECTL
, s
->tilectl
);
2493 I915_WRITE(GTFIFOCTL
, s
->gt_fifoctl
);
2495 * Preserve the GT allow wake and GFX force clock bit, they are not
2496 * be restored, as they are used to control the s0ix suspend/resume
2497 * sequence by the caller.
2499 val
= I915_READ(VLV_GTLC_WAKE_CTRL
);
2500 val
&= VLV_GTLC_ALLOWWAKEREQ
;
2501 val
|= s
->gtlc_wake_ctrl
& ~VLV_GTLC_ALLOWWAKEREQ
;
2502 I915_WRITE(VLV_GTLC_WAKE_CTRL
, val
);
2504 val
= I915_READ(VLV_GTLC_SURVIVABILITY_REG
);
2505 val
&= VLV_GFX_CLK_FORCE_ON_BIT
;
2506 val
|= s
->gtlc_survive
& ~VLV_GFX_CLK_FORCE_ON_BIT
;
2507 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG
, val
);
2509 I915_WRITE(VLV_PMWGICZ
, s
->pmwgicz
);
2511 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
2512 I915_WRITE(VLV_GU_CTL0
, s
->gu_ctl0
);
2513 I915_WRITE(VLV_GU_CTL1
, s
->gu_ctl1
);
2514 I915_WRITE(VLV_PCBR
, s
->pcbr
);
2515 I915_WRITE(VLV_GUNIT_CLOCK_GATE2
, s
->clock_gate_dis2
);
2518 int vlv_force_gfx_clock(struct drm_i915_private
*dev_priv
, bool force_on
)
2523 val
= I915_READ(VLV_GTLC_SURVIVABILITY_REG
);
2524 val
&= ~VLV_GFX_CLK_FORCE_ON_BIT
;
2526 val
|= VLV_GFX_CLK_FORCE_ON_BIT
;
2527 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG
, val
);
2532 err
= intel_wait_for_register(dev_priv
,
2533 VLV_GTLC_SURVIVABILITY_REG
,
2534 VLV_GFX_CLK_STATUS_BIT
,
2535 VLV_GFX_CLK_STATUS_BIT
,
2538 DRM_ERROR("timeout waiting for GFX clock force-on (%08x)\n",
2539 I915_READ(VLV_GTLC_SURVIVABILITY_REG
));
2544 static int vlv_allow_gt_wake(struct drm_i915_private
*dev_priv
, bool allow
)
2549 val
= I915_READ(VLV_GTLC_WAKE_CTRL
);
2550 val
&= ~VLV_GTLC_ALLOWWAKEREQ
;
2552 val
|= VLV_GTLC_ALLOWWAKEREQ
;
2553 I915_WRITE(VLV_GTLC_WAKE_CTRL
, val
);
2554 POSTING_READ(VLV_GTLC_WAKE_CTRL
);
2556 err
= intel_wait_for_register(dev_priv
,
2558 VLV_GTLC_ALLOWWAKEACK
,
2562 DRM_ERROR("timeout disabling GT waking\n");
2567 static int vlv_wait_for_gt_wells(struct drm_i915_private
*dev_priv
,
2574 mask
= VLV_GTLC_PW_MEDIA_STATUS_MASK
| VLV_GTLC_PW_RENDER_STATUS_MASK
;
2575 val
= wait_for_on
? mask
: 0;
2576 if ((I915_READ(VLV_GTLC_PW_STATUS
) & mask
) == val
)
2579 DRM_DEBUG_KMS("waiting for GT wells to go %s (%08x)\n",
2581 I915_READ(VLV_GTLC_PW_STATUS
));
2584 * RC6 transitioning can be delayed up to 2 msec (see
2585 * valleyview_enable_rps), use 3 msec for safety.
2587 err
= intel_wait_for_register(dev_priv
,
2588 VLV_GTLC_PW_STATUS
, mask
, val
,
2591 DRM_ERROR("timeout waiting for GT wells to go %s\n",
2592 onoff(wait_for_on
));
2597 static void vlv_check_no_gt_access(struct drm_i915_private
*dev_priv
)
2599 if (!(I915_READ(VLV_GTLC_PW_STATUS
) & VLV_GTLC_ALLOWWAKEERR
))
2602 DRM_DEBUG_DRIVER("GT register access while GT waking disabled\n");
2603 I915_WRITE(VLV_GTLC_PW_STATUS
, VLV_GTLC_ALLOWWAKEERR
);
2606 static int vlv_suspend_complete(struct drm_i915_private
*dev_priv
)
2612 * Bspec defines the following GT well on flags as debug only, so
2613 * don't treat them as hard failures.
2615 (void)vlv_wait_for_gt_wells(dev_priv
, false);
2617 mask
= VLV_GTLC_RENDER_CTX_EXISTS
| VLV_GTLC_MEDIA_CTX_EXISTS
;
2618 WARN_ON((I915_READ(VLV_GTLC_WAKE_CTRL
) & mask
) != mask
);
2620 vlv_check_no_gt_access(dev_priv
);
2622 err
= vlv_force_gfx_clock(dev_priv
, true);
2626 err
= vlv_allow_gt_wake(dev_priv
, false);
2630 if (!IS_CHERRYVIEW(dev_priv
))
2631 vlv_save_gunit_s0ix_state(dev_priv
);
2633 err
= vlv_force_gfx_clock(dev_priv
, false);
2640 /* For safety always re-enable waking and disable gfx clock forcing */
2641 vlv_allow_gt_wake(dev_priv
, true);
2643 vlv_force_gfx_clock(dev_priv
, false);
2648 static int vlv_resume_prepare(struct drm_i915_private
*dev_priv
,
2651 struct drm_device
*dev
= dev_priv
->dev
;
2656 * If any of the steps fail just try to continue, that's the best we
2657 * can do at this point. Return the first error code (which will also
2658 * leave RPM permanently disabled).
2660 ret
= vlv_force_gfx_clock(dev_priv
, true);
2662 if (!IS_CHERRYVIEW(dev_priv
))
2663 vlv_restore_gunit_s0ix_state(dev_priv
);
2665 err
= vlv_allow_gt_wake(dev_priv
, true);
2669 err
= vlv_force_gfx_clock(dev_priv
, false);
2673 vlv_check_no_gt_access(dev_priv
);
2676 intel_init_clock_gating(dev
);
2677 i915_gem_restore_fences(dev
);
2683 static int intel_runtime_suspend(struct device
*device
)
2685 struct pci_dev
*pdev
= to_pci_dev(device
);
2686 struct drm_device
*dev
= pci_get_drvdata(pdev
);
2687 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2690 if (WARN_ON_ONCE(!(dev_priv
->rps
.enabled
&& intel_enable_rc6())))
2693 if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev
)))
2696 DRM_DEBUG_KMS("Suspending device\n");
2699 * We could deadlock here in case another thread holding struct_mutex
2700 * calls RPM suspend concurrently, since the RPM suspend will wait
2701 * first for this RPM suspend to finish. In this case the concurrent
2702 * RPM resume will be followed by its RPM suspend counterpart. Still
2703 * for consistency return -EAGAIN, which will reschedule this suspend.
2705 if (!mutex_trylock(&dev
->struct_mutex
)) {
2706 DRM_DEBUG_KMS("device lock contention, deffering suspend\n");
2708 * Bump the expiration timestamp, otherwise the suspend won't
2711 pm_runtime_mark_last_busy(device
);
2716 disable_rpm_wakeref_asserts(dev_priv
);
2719 * We are safe here against re-faults, since the fault handler takes
2722 i915_gem_release_all_mmaps(dev_priv
);
2723 mutex_unlock(&dev
->struct_mutex
);
2725 intel_guc_suspend(dev
);
2727 intel_runtime_pm_disable_interrupts(dev_priv
);
2730 if (IS_BROXTON(dev_priv
)) {
2731 bxt_display_core_uninit(dev_priv
);
2732 bxt_enable_dc9(dev_priv
);
2733 } else if (IS_HASWELL(dev_priv
) || IS_BROADWELL(dev_priv
)) {
2734 hsw_enable_pc8(dev_priv
);
2735 } else if (IS_VALLEYVIEW(dev_priv
) || IS_CHERRYVIEW(dev_priv
)) {
2736 ret
= vlv_suspend_complete(dev_priv
);
2740 DRM_ERROR("Runtime suspend failed, disabling it (%d)\n", ret
);
2741 intel_runtime_pm_enable_interrupts(dev_priv
);
2743 enable_rpm_wakeref_asserts(dev_priv
);
2748 intel_uncore_forcewake_reset(dev_priv
, false);
2750 enable_rpm_wakeref_asserts(dev_priv
);
2751 WARN_ON_ONCE(atomic_read(&dev_priv
->pm
.wakeref_count
));
2753 if (intel_uncore_arm_unclaimed_mmio_detection(dev_priv
))
2754 DRM_ERROR("Unclaimed access detected prior to suspending\n");
2756 dev_priv
->pm
.suspended
= true;
2759 * FIXME: We really should find a document that references the arguments
2762 if (IS_BROADWELL(dev_priv
)) {
2764 * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop
2765 * being detected, and the call we do at intel_runtime_resume()
2766 * won't be able to restore them. Since PCI_D3hot matches the
2767 * actual specification and appears to be working, use it.
2769 intel_opregion_notify_adapter(dev_priv
, PCI_D3hot
);
2772 * current versions of firmware which depend on this opregion
2773 * notification have repurposed the D1 definition to mean
2774 * "runtime suspended" vs. what you would normally expect (D3)
2775 * to distinguish it from notifications that might be sent via
2778 intel_opregion_notify_adapter(dev_priv
, PCI_D1
);
2781 assert_forcewakes_inactive(dev_priv
);
2783 DRM_DEBUG_KMS("Device suspended\n");
2787 static int intel_runtime_resume(struct device
*device
)
2789 struct pci_dev
*pdev
= to_pci_dev(device
);
2790 struct drm_device
*dev
= pci_get_drvdata(pdev
);
2791 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2794 if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev
)))
2797 DRM_DEBUG_KMS("Resuming device\n");
2799 WARN_ON_ONCE(atomic_read(&dev_priv
->pm
.wakeref_count
));
2800 disable_rpm_wakeref_asserts(dev_priv
);
2802 intel_opregion_notify_adapter(dev_priv
, PCI_D0
);
2803 dev_priv
->pm
.suspended
= false;
2804 if (intel_uncore_unclaimed_mmio(dev_priv
))
2805 DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n");
2807 intel_guc_resume(dev
);
2809 if (IS_GEN6(dev_priv
))
2810 intel_init_pch_refclk(dev
);
2812 if (IS_BROXTON(dev
)) {
2813 bxt_disable_dc9(dev_priv
);
2814 bxt_display_core_init(dev_priv
, true);
2815 if (dev_priv
->csr
.dmc_payload
&&
2816 (dev_priv
->csr
.allowed_dc_mask
& DC_STATE_EN_UPTO_DC5
))
2817 gen9_enable_dc5(dev_priv
);
2818 } else if (IS_HASWELL(dev_priv
) || IS_BROADWELL(dev_priv
)) {
2819 hsw_disable_pc8(dev_priv
);
2820 } else if (IS_VALLEYVIEW(dev_priv
) || IS_CHERRYVIEW(dev_priv
)) {
2821 ret
= vlv_resume_prepare(dev_priv
, true);
2825 * No point of rolling back things in case of an error, as the best
2826 * we can do is to hope that things will still work (and disable RPM).
2828 i915_gem_init_swizzling(dev
);
2829 gen6_update_ring_freq(dev_priv
);
2831 intel_runtime_pm_enable_interrupts(dev_priv
);
2834 * On VLV/CHV display interrupts are part of the display
2835 * power well, so hpd is reinitialized from there. For
2836 * everyone else do it here.
2838 if (!IS_VALLEYVIEW(dev_priv
) && !IS_CHERRYVIEW(dev_priv
))
2839 intel_hpd_init(dev_priv
);
2841 enable_rpm_wakeref_asserts(dev_priv
);
2844 DRM_ERROR("Runtime resume failed, disabling it (%d)\n", ret
);
2846 DRM_DEBUG_KMS("Device resumed\n");
2851 const struct dev_pm_ops i915_pm_ops
= {
2853 * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND,
2856 .suspend
= i915_pm_suspend
,
2857 .suspend_late
= i915_pm_suspend_late
,
2858 .resume_early
= i915_pm_resume_early
,
2859 .resume
= i915_pm_resume
,
2863 * @freeze, @freeze_late : called (1) before creating the
2864 * hibernation image [PMSG_FREEZE] and
2865 * (2) after rebooting, before restoring
2866 * the image [PMSG_QUIESCE]
2867 * @thaw, @thaw_early : called (1) after creating the hibernation
2868 * image, before writing it [PMSG_THAW]
2869 * and (2) after failing to create or
2870 * restore the image [PMSG_RECOVER]
2871 * @poweroff, @poweroff_late: called after writing the hibernation
2872 * image, before rebooting [PMSG_HIBERNATE]
2873 * @restore, @restore_early : called after rebooting and restoring the
2874 * hibernation image [PMSG_RESTORE]
2876 .freeze
= i915_pm_freeze
,
2877 .freeze_late
= i915_pm_freeze_late
,
2878 .thaw_early
= i915_pm_thaw_early
,
2879 .thaw
= i915_pm_thaw
,
2880 .poweroff
= i915_pm_suspend
,
2881 .poweroff_late
= i915_pm_poweroff_late
,
2882 .restore_early
= i915_pm_restore_early
,
2883 .restore
= i915_pm_restore
,
2885 /* S0ix (via runtime suspend) event handlers */
2886 .runtime_suspend
= intel_runtime_suspend
,
2887 .runtime_resume
= intel_runtime_resume
,
2890 static const struct vm_operations_struct i915_gem_vm_ops
= {
2891 .fault
= i915_gem_fault
,
2892 .open
= drm_gem_vm_open
,
2893 .close
= drm_gem_vm_close
,
2896 static const struct file_operations i915_driver_fops
= {
2897 .owner
= THIS_MODULE
,
2899 .release
= drm_release
,
2900 .unlocked_ioctl
= drm_ioctl
,
2901 .mmap
= drm_gem_mmap
,
2904 #ifdef CONFIG_COMPAT
2905 .compat_ioctl
= i915_compat_ioctl
,
2907 .llseek
= noop_llseek
,
2911 i915_gem_reject_pin_ioctl(struct drm_device
*dev
, void *data
,
2912 struct drm_file
*file
)
2917 static const struct drm_ioctl_desc i915_ioctls
[] = {
2918 DRM_IOCTL_DEF_DRV(I915_INIT
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
2919 DRM_IOCTL_DEF_DRV(I915_FLUSH
, drm_noop
, DRM_AUTH
),
2920 DRM_IOCTL_DEF_DRV(I915_FLIP
, drm_noop
, DRM_AUTH
),
2921 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER
, drm_noop
, DRM_AUTH
),
2922 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT
, drm_noop
, DRM_AUTH
),
2923 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT
, drm_noop
, DRM_AUTH
),
2924 DRM_IOCTL_DEF_DRV(I915_GETPARAM
, i915_getparam
, DRM_AUTH
|DRM_RENDER_ALLOW
),
2925 DRM_IOCTL_DEF_DRV(I915_SETPARAM
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
2926 DRM_IOCTL_DEF_DRV(I915_ALLOC
, drm_noop
, DRM_AUTH
),
2927 DRM_IOCTL_DEF_DRV(I915_FREE
, drm_noop
, DRM_AUTH
),
2928 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
2929 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER
, drm_noop
, DRM_AUTH
),
2930 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
2931 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
2932 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE
, drm_noop
, DRM_AUTH
),
2933 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP
, drm_noop
, DRM_AUTH
),
2934 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
2935 DRM_IOCTL_DEF_DRV(I915_GEM_INIT
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
2936 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER
, i915_gem_execbuffer
, DRM_AUTH
),
2937 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2
, i915_gem_execbuffer2
, DRM_AUTH
|DRM_RENDER_ALLOW
),
2938 DRM_IOCTL_DEF_DRV(I915_GEM_PIN
, i915_gem_reject_pin_ioctl
, DRM_AUTH
|DRM_ROOT_ONLY
),
2939 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN
, i915_gem_reject_pin_ioctl
, DRM_AUTH
|DRM_ROOT_ONLY
),
2940 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY
, i915_gem_busy_ioctl
, DRM_AUTH
|DRM_RENDER_ALLOW
),
2941 DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING
, i915_gem_set_caching_ioctl
, DRM_RENDER_ALLOW
),
2942 DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING
, i915_gem_get_caching_ioctl
, DRM_RENDER_ALLOW
),
2943 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE
, i915_gem_throttle_ioctl
, DRM_AUTH
|DRM_RENDER_ALLOW
),
2944 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
2945 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
2946 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE
, i915_gem_create_ioctl
, DRM_RENDER_ALLOW
),
2947 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD
, i915_gem_pread_ioctl
, DRM_RENDER_ALLOW
),
2948 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE
, i915_gem_pwrite_ioctl
, DRM_RENDER_ALLOW
),
2949 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP
, i915_gem_mmap_ioctl
, DRM_RENDER_ALLOW
),
2950 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT
, i915_gem_mmap_gtt_ioctl
, DRM_RENDER_ALLOW
),
2951 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN
, i915_gem_set_domain_ioctl
, DRM_RENDER_ALLOW
),
2952 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH
, i915_gem_sw_finish_ioctl
, DRM_RENDER_ALLOW
),
2953 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING
, i915_gem_set_tiling
, DRM_RENDER_ALLOW
),
2954 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING
, i915_gem_get_tiling
, DRM_RENDER_ALLOW
),
2955 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE
, i915_gem_get_aperture_ioctl
, DRM_RENDER_ALLOW
),
2956 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID
, intel_get_pipe_from_crtc_id
, 0),
2957 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE
, i915_gem_madvise_ioctl
, DRM_RENDER_ALLOW
),
2958 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE
, intel_overlay_put_image_ioctl
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
2959 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS
, intel_overlay_attrs_ioctl
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
2960 DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY
, intel_sprite_set_colorkey
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
2961 DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY
, drm_noop
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
2962 DRM_IOCTL_DEF_DRV(I915_GEM_WAIT
, i915_gem_wait_ioctl
, DRM_AUTH
|DRM_RENDER_ALLOW
),
2963 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE
, i915_gem_context_create_ioctl
, DRM_RENDER_ALLOW
),
2964 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY
, i915_gem_context_destroy_ioctl
, DRM_RENDER_ALLOW
),
2965 DRM_IOCTL_DEF_DRV(I915_REG_READ
, i915_reg_read_ioctl
, DRM_RENDER_ALLOW
),
2966 DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS
, i915_gem_context_reset_stats_ioctl
, DRM_RENDER_ALLOW
),
2967 DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR
, i915_gem_userptr_ioctl
, DRM_RENDER_ALLOW
),
2968 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM
, i915_gem_context_getparam_ioctl
, DRM_RENDER_ALLOW
),
2969 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM
, i915_gem_context_setparam_ioctl
, DRM_RENDER_ALLOW
),
2972 static struct drm_driver driver
= {
2973 /* Don't use MTRRs here; the Xserver or userspace app should
2974 * deal with them for Intel hardware.
2977 DRIVER_HAVE_IRQ
| DRIVER_IRQ_SHARED
| DRIVER_GEM
| DRIVER_PRIME
|
2978 DRIVER_RENDER
| DRIVER_MODESET
,
2979 .open
= i915_driver_open
,
2980 .lastclose
= i915_driver_lastclose
,
2981 .preclose
= i915_driver_preclose
,
2982 .postclose
= i915_driver_postclose
,
2983 .set_busid
= drm_pci_set_busid
,
2985 .gem_free_object
= i915_gem_free_object
,
2986 .gem_vm_ops
= &i915_gem_vm_ops
,
2988 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
2989 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
2990 .gem_prime_export
= i915_gem_prime_export
,
2991 .gem_prime_import
= i915_gem_prime_import
,
2993 .dumb_create
= i915_gem_dumb_create
,
2994 .dumb_map_offset
= i915_gem_mmap_gtt
,
2995 .dumb_destroy
= drm_gem_dumb_destroy
,
2996 .ioctls
= i915_ioctls
,
2997 .num_ioctls
= ARRAY_SIZE(i915_ioctls
),
2998 .fops
= &i915_driver_fops
,
2999 .name
= DRIVER_NAME
,
3000 .desc
= DRIVER_DESC
,
3001 .date
= DRIVER_DATE
,
3002 .major
= DRIVER_MAJOR
,
3003 .minor
= DRIVER_MINOR
,
3004 .patchlevel
= DRIVER_PATCHLEVEL
,