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Before suspend, and especially before building the hibernation image, we need to context image to be coherent in memory. To do this we require that we perform a context switch to a disposable context (i.e. the dev_priv->kernel_context) - when that switch is complete, all other context images will be complete. This leaves the kernel_context image as incomplete, but fortunately that is disposable and we can do a quick fixup of the logical state after resuming. v2: Share the nearly identical code to switch to the kernel context with eviction. v3: Explain why we need the switch and reset. Testcase: igt/gem_exec_suspend # bsw References: https://bugs.freedesktop.org/show_bug.cgi?id=96526 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1468590980-6186-2-git-send-email-chris@chris-wilson.co.uk
2635 lines
74 KiB
C
2635 lines
74 KiB
C
/* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*-
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*/
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/*
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*
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* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <linux/acpi.h>
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#include <linux/device.h>
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#include <linux/oom.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/pm.h>
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#include <linux/pm_runtime.h>
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#include <linux/pnp.h>
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#include <linux/slab.h>
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#include <linux/vgaarb.h>
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#include <linux/vga_switcheroo.h>
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#include <linux/vt.h>
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#include <acpi/video.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/i915_drm.h>
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#include "i915_drv.h"
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#include "i915_trace.h"
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#include "i915_vgpu.h"
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#include "intel_drv.h"
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static struct drm_driver driver;
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static unsigned int i915_load_fail_count;
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bool __i915_inject_load_failure(const char *func, int line)
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{
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if (i915_load_fail_count >= i915.inject_load_failure)
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return false;
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if (++i915_load_fail_count == i915.inject_load_failure) {
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DRM_INFO("Injecting failure at checkpoint %u [%s:%d]\n",
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i915.inject_load_failure, func, line);
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return true;
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}
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return false;
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}
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#define FDO_BUG_URL "https://bugs.freedesktop.org/enter_bug.cgi?product=DRI"
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#define FDO_BUG_MSG "Please file a bug at " FDO_BUG_URL " against DRM/Intel " \
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"providing the dmesg log by booting with drm.debug=0xf"
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void
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__i915_printk(struct drm_i915_private *dev_priv, const char *level,
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const char *fmt, ...)
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{
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static bool shown_bug_once;
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struct device *dev = dev_priv->drm.dev;
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bool is_error = level[1] <= KERN_ERR[1];
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bool is_debug = level[1] == KERN_DEBUG[1];
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struct va_format vaf;
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va_list args;
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if (is_debug && !(drm_debug & DRM_UT_DRIVER))
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return;
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va_start(args, fmt);
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vaf.fmt = fmt;
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vaf.va = &args;
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dev_printk(level, dev, "[" DRM_NAME ":%ps] %pV",
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__builtin_return_address(0), &vaf);
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if (is_error && !shown_bug_once) {
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dev_notice(dev, "%s", FDO_BUG_MSG);
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shown_bug_once = true;
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}
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va_end(args);
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}
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static bool i915_error_injected(struct drm_i915_private *dev_priv)
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{
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return i915.inject_load_failure &&
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i915_load_fail_count == i915.inject_load_failure;
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}
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#define i915_load_error(dev_priv, fmt, ...) \
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__i915_printk(dev_priv, \
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i915_error_injected(dev_priv) ? KERN_DEBUG : KERN_ERR, \
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fmt, ##__VA_ARGS__)
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static enum intel_pch intel_virt_detect_pch(struct drm_device *dev)
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{
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enum intel_pch ret = PCH_NOP;
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/*
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* In a virtualized passthrough environment we can be in a
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* setup where the ISA bridge is not able to be passed through.
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* In this case, a south bridge can be emulated and we have to
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* make an educated guess as to which PCH is really there.
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*/
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if (IS_GEN5(dev)) {
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ret = PCH_IBX;
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DRM_DEBUG_KMS("Assuming Ibex Peak PCH\n");
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} else if (IS_GEN6(dev) || IS_IVYBRIDGE(dev)) {
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ret = PCH_CPT;
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DRM_DEBUG_KMS("Assuming CouarPoint PCH\n");
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} else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
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ret = PCH_LPT;
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DRM_DEBUG_KMS("Assuming LynxPoint PCH\n");
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} else if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
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ret = PCH_SPT;
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DRM_DEBUG_KMS("Assuming SunrisePoint PCH\n");
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}
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return ret;
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}
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static void intel_detect_pch(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = to_i915(dev);
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struct pci_dev *pch = NULL;
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/* In all current cases, num_pipes is equivalent to the PCH_NOP setting
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* (which really amounts to a PCH but no South Display).
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*/
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if (INTEL_INFO(dev)->num_pipes == 0) {
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dev_priv->pch_type = PCH_NOP;
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return;
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}
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/*
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* The reason to probe ISA bridge instead of Dev31:Fun0 is to
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* make graphics device passthrough work easy for VMM, that only
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* need to expose ISA bridge to let driver know the real hardware
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* underneath. This is a requirement from virtualization team.
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*
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* In some virtualized environments (e.g. XEN), there is irrelevant
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* ISA bridge in the system. To work reliably, we should scan trhough
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* all the ISA bridge devices and check for the first match, instead
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* of only checking the first one.
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*/
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while ((pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, pch))) {
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if (pch->vendor == PCI_VENDOR_ID_INTEL) {
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unsigned short id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
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dev_priv->pch_id = id;
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if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) {
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dev_priv->pch_type = PCH_IBX;
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DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
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WARN_ON(!IS_GEN5(dev));
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} else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
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dev_priv->pch_type = PCH_CPT;
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DRM_DEBUG_KMS("Found CougarPoint PCH\n");
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WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
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} else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) {
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/* PantherPoint is CPT compatible */
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dev_priv->pch_type = PCH_CPT;
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DRM_DEBUG_KMS("Found PantherPoint PCH\n");
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WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
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} else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
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dev_priv->pch_type = PCH_LPT;
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DRM_DEBUG_KMS("Found LynxPoint PCH\n");
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WARN_ON(!IS_HASWELL(dev) && !IS_BROADWELL(dev));
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WARN_ON(IS_HSW_ULT(dev) || IS_BDW_ULT(dev));
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} else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
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dev_priv->pch_type = PCH_LPT;
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DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
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WARN_ON(!IS_HASWELL(dev) && !IS_BROADWELL(dev));
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WARN_ON(!IS_HSW_ULT(dev) && !IS_BDW_ULT(dev));
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} else if (id == INTEL_PCH_SPT_DEVICE_ID_TYPE) {
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dev_priv->pch_type = PCH_SPT;
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DRM_DEBUG_KMS("Found SunrisePoint PCH\n");
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WARN_ON(!IS_SKYLAKE(dev) &&
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!IS_KABYLAKE(dev));
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} else if (id == INTEL_PCH_SPT_LP_DEVICE_ID_TYPE) {
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dev_priv->pch_type = PCH_SPT;
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DRM_DEBUG_KMS("Found SunrisePoint LP PCH\n");
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WARN_ON(!IS_SKYLAKE(dev) &&
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!IS_KABYLAKE(dev));
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} else if (id == INTEL_PCH_KBP_DEVICE_ID_TYPE) {
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dev_priv->pch_type = PCH_KBP;
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DRM_DEBUG_KMS("Found KabyPoint PCH\n");
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WARN_ON(!IS_KABYLAKE(dev));
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} else if ((id == INTEL_PCH_P2X_DEVICE_ID_TYPE) ||
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(id == INTEL_PCH_P3X_DEVICE_ID_TYPE) ||
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((id == INTEL_PCH_QEMU_DEVICE_ID_TYPE) &&
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pch->subsystem_vendor ==
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PCI_SUBVENDOR_ID_REDHAT_QUMRANET &&
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pch->subsystem_device ==
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PCI_SUBDEVICE_ID_QEMU)) {
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dev_priv->pch_type = intel_virt_detect_pch(dev);
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} else
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continue;
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break;
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}
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}
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if (!pch)
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DRM_DEBUG_KMS("No PCH found.\n");
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pci_dev_put(pch);
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}
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bool i915_semaphore_is_enabled(struct drm_i915_private *dev_priv)
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{
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if (INTEL_GEN(dev_priv) < 6)
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return false;
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if (i915.semaphores >= 0)
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return i915.semaphores;
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/* TODO: make semaphores and Execlists play nicely together */
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if (i915.enable_execlists)
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return false;
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#ifdef CONFIG_INTEL_IOMMU
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/* Enable semaphores on SNB when IO remapping is off */
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if (IS_GEN6(dev_priv) && intel_iommu_gfx_mapped)
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return false;
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#endif
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return true;
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}
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static int i915_getparam(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_i915_private *dev_priv = to_i915(dev);
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drm_i915_getparam_t *param = data;
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int value;
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switch (param->param) {
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case I915_PARAM_IRQ_ACTIVE:
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case I915_PARAM_ALLOW_BATCHBUFFER:
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case I915_PARAM_LAST_DISPATCH:
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/* Reject all old ums/dri params. */
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return -ENODEV;
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case I915_PARAM_CHIPSET_ID:
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value = dev->pdev->device;
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break;
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case I915_PARAM_REVISION:
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value = dev->pdev->revision;
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break;
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case I915_PARAM_HAS_GEM:
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value = 1;
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break;
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case I915_PARAM_NUM_FENCES_AVAIL:
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value = dev_priv->num_fence_regs;
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break;
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case I915_PARAM_HAS_OVERLAY:
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value = dev_priv->overlay ? 1 : 0;
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break;
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case I915_PARAM_HAS_PAGEFLIPPING:
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value = 1;
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break;
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case I915_PARAM_HAS_EXECBUF2:
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/* depends on GEM */
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value = 1;
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break;
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case I915_PARAM_HAS_BSD:
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value = intel_engine_initialized(&dev_priv->engine[VCS]);
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break;
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case I915_PARAM_HAS_BLT:
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value = intel_engine_initialized(&dev_priv->engine[BCS]);
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break;
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case I915_PARAM_HAS_VEBOX:
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value = intel_engine_initialized(&dev_priv->engine[VECS]);
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break;
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case I915_PARAM_HAS_BSD2:
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value = intel_engine_initialized(&dev_priv->engine[VCS2]);
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break;
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case I915_PARAM_HAS_RELAXED_FENCING:
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value = 1;
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break;
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case I915_PARAM_HAS_COHERENT_RINGS:
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value = 1;
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break;
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case I915_PARAM_HAS_EXEC_CONSTANTS:
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value = INTEL_INFO(dev)->gen >= 4;
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break;
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case I915_PARAM_HAS_RELAXED_DELTA:
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value = 1;
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break;
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case I915_PARAM_HAS_GEN7_SOL_RESET:
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value = 1;
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break;
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case I915_PARAM_HAS_LLC:
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value = HAS_LLC(dev);
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break;
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case I915_PARAM_HAS_WT:
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value = HAS_WT(dev);
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break;
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case I915_PARAM_HAS_ALIASING_PPGTT:
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value = USES_PPGTT(dev);
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break;
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case I915_PARAM_HAS_WAIT_TIMEOUT:
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value = 1;
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break;
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case I915_PARAM_HAS_SEMAPHORES:
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value = i915_semaphore_is_enabled(dev_priv);
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break;
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case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
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value = 1;
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break;
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case I915_PARAM_HAS_SECURE_BATCHES:
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value = capable(CAP_SYS_ADMIN);
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break;
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case I915_PARAM_HAS_PINNED_BATCHES:
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value = 1;
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break;
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case I915_PARAM_HAS_EXEC_NO_RELOC:
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value = 1;
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break;
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case I915_PARAM_HAS_EXEC_HANDLE_LUT:
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value = 1;
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break;
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case I915_PARAM_CMD_PARSER_VERSION:
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value = i915_cmd_parser_get_version(dev_priv);
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break;
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case I915_PARAM_HAS_COHERENT_PHYS_GTT:
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value = 1;
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break;
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case I915_PARAM_MMAP_VERSION:
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value = 1;
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break;
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case I915_PARAM_SUBSLICE_TOTAL:
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value = INTEL_INFO(dev)->subslice_total;
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if (!value)
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return -ENODEV;
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break;
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case I915_PARAM_EU_TOTAL:
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value = INTEL_INFO(dev)->eu_total;
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if (!value)
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return -ENODEV;
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break;
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case I915_PARAM_HAS_GPU_RESET:
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value = i915.enable_hangcheck && intel_has_gpu_reset(dev_priv);
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break;
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case I915_PARAM_HAS_RESOURCE_STREAMER:
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value = HAS_RESOURCE_STREAMER(dev);
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break;
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case I915_PARAM_HAS_EXEC_SOFTPIN:
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value = 1;
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break;
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case I915_PARAM_HAS_POOLED_EU:
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value = HAS_POOLED_EU(dev);
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break;
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case I915_PARAM_MIN_EU_IN_POOL:
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value = INTEL_INFO(dev)->min_eu_in_pool;
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break;
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default:
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DRM_DEBUG("Unknown parameter %d\n", param->param);
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return -EINVAL;
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}
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if (put_user(value, param->value))
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return -EFAULT;
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return 0;
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}
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static int i915_get_bridge_dev(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = to_i915(dev);
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dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
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if (!dev_priv->bridge_dev) {
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DRM_ERROR("bridge device not found\n");
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return -1;
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}
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return 0;
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}
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/* Allocate space for the MCH regs if needed, return nonzero on error */
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static int
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intel_alloc_mchbar_resource(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = to_i915(dev);
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int reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
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u32 temp_lo, temp_hi = 0;
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u64 mchbar_addr;
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int ret;
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if (INTEL_INFO(dev)->gen >= 4)
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pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
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pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
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mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
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/* If ACPI doesn't have it, assume we need to allocate it ourselves */
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#ifdef CONFIG_PNP
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if (mchbar_addr &&
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pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
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return 0;
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#endif
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/* Get some space for it */
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dev_priv->mch_res.name = "i915 MCHBAR";
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dev_priv->mch_res.flags = IORESOURCE_MEM;
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ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus,
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&dev_priv->mch_res,
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MCHBAR_SIZE, MCHBAR_SIZE,
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PCIBIOS_MIN_MEM,
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0, pcibios_align_resource,
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dev_priv->bridge_dev);
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if (ret) {
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DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret);
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dev_priv->mch_res.start = 0;
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return ret;
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}
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|
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if (INTEL_INFO(dev)->gen >= 4)
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pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
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upper_32_bits(dev_priv->mch_res.start));
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pci_write_config_dword(dev_priv->bridge_dev, reg,
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lower_32_bits(dev_priv->mch_res.start));
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return 0;
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}
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|
|
/* Setup MCHBAR if possible, return true if we should disable it again */
|
|
static void
|
|
intel_setup_mchbar(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
|
|
u32 temp;
|
|
bool enabled;
|
|
|
|
if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
|
|
return;
|
|
|
|
dev_priv->mchbar_need_disable = false;
|
|
|
|
if (IS_I915G(dev) || IS_I915GM(dev)) {
|
|
pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &temp);
|
|
enabled = !!(temp & DEVEN_MCHBAR_EN);
|
|
} else {
|
|
pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
|
|
enabled = temp & 1;
|
|
}
|
|
|
|
/* If it's already enabled, don't have to do anything */
|
|
if (enabled)
|
|
return;
|
|
|
|
if (intel_alloc_mchbar_resource(dev))
|
|
return;
|
|
|
|
dev_priv->mchbar_need_disable = true;
|
|
|
|
/* Space is allocated or reserved, so enable it. */
|
|
if (IS_I915G(dev) || IS_I915GM(dev)) {
|
|
pci_write_config_dword(dev_priv->bridge_dev, DEVEN,
|
|
temp | DEVEN_MCHBAR_EN);
|
|
} else {
|
|
pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
|
|
pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
intel_teardown_mchbar(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
|
|
|
|
if (dev_priv->mchbar_need_disable) {
|
|
if (IS_I915G(dev) || IS_I915GM(dev)) {
|
|
u32 deven_val;
|
|
|
|
pci_read_config_dword(dev_priv->bridge_dev, DEVEN,
|
|
&deven_val);
|
|
deven_val &= ~DEVEN_MCHBAR_EN;
|
|
pci_write_config_dword(dev_priv->bridge_dev, DEVEN,
|
|
deven_val);
|
|
} else {
|
|
u32 mchbar_val;
|
|
|
|
pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg,
|
|
&mchbar_val);
|
|
mchbar_val &= ~1;
|
|
pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg,
|
|
mchbar_val);
|
|
}
|
|
}
|
|
|
|
if (dev_priv->mch_res.start)
|
|
release_resource(&dev_priv->mch_res);
|
|
}
|
|
|
|
/* true = enable decode, false = disable decoder */
|
|
static unsigned int i915_vga_set_decode(void *cookie, bool state)
|
|
{
|
|
struct drm_device *dev = cookie;
|
|
|
|
intel_modeset_vga_set_state(dev, state);
|
|
if (state)
|
|
return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
|
|
VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
|
|
else
|
|
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
|
|
}
|
|
|
|
static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
|
|
{
|
|
struct drm_device *dev = pci_get_drvdata(pdev);
|
|
pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
|
|
|
|
if (state == VGA_SWITCHEROO_ON) {
|
|
pr_info("switched on\n");
|
|
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
|
|
/* i915 resume handler doesn't set to D0 */
|
|
pci_set_power_state(dev->pdev, PCI_D0);
|
|
i915_resume_switcheroo(dev);
|
|
dev->switch_power_state = DRM_SWITCH_POWER_ON;
|
|
} else {
|
|
pr_info("switched off\n");
|
|
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
|
|
i915_suspend_switcheroo(dev, pmm);
|
|
dev->switch_power_state = DRM_SWITCH_POWER_OFF;
|
|
}
|
|
}
|
|
|
|
static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
|
|
{
|
|
struct drm_device *dev = pci_get_drvdata(pdev);
|
|
|
|
/*
|
|
* FIXME: open_count is protected by drm_global_mutex but that would lead to
|
|
* locking inversion with the driver load path. And the access here is
|
|
* completely racy anyway. So don't bother with locking for now.
|
|
*/
|
|
return dev->open_count == 0;
|
|
}
|
|
|
|
static const struct vga_switcheroo_client_ops i915_switcheroo_ops = {
|
|
.set_gpu_state = i915_switcheroo_set_state,
|
|
.reprobe = NULL,
|
|
.can_switch = i915_switcheroo_can_switch,
|
|
};
|
|
|
|
static void i915_gem_fini(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
/*
|
|
* Neither the BIOS, ourselves or any other kernel
|
|
* expects the system to be in execlists mode on startup,
|
|
* so we need to reset the GPU back to legacy mode. And the only
|
|
* known way to disable logical contexts is through a GPU reset.
|
|
*
|
|
* So in order to leave the system in a known default configuration,
|
|
* always reset the GPU upon unload. Afterwards we then clean up the
|
|
* GEM state tracking, flushing off the requests and leaving the
|
|
* system in a known idle state.
|
|
*
|
|
* Note that is of the upmost importance that the GPU is idle and
|
|
* all stray writes are flushed *before* we dismantle the backing
|
|
* storage for the pinned objects.
|
|
*
|
|
* However, since we are uncertain that reseting the GPU on older
|
|
* machines is a good idea, we don't - just in case it leaves the
|
|
* machine in an unusable condition.
|
|
*/
|
|
if (HAS_HW_CONTEXTS(dev)) {
|
|
int reset = intel_gpu_reset(dev_priv, ALL_ENGINES);
|
|
WARN_ON(reset && reset != -ENODEV);
|
|
}
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
i915_gem_reset(dev);
|
|
i915_gem_cleanup_engines(dev);
|
|
i915_gem_context_fini(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
WARN_ON(!list_empty(&to_i915(dev)->context_list));
|
|
}
|
|
|
|
static int i915_load_modeset_init(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
int ret;
|
|
|
|
if (i915_inject_load_failure())
|
|
return -ENODEV;
|
|
|
|
ret = intel_bios_init(dev_priv);
|
|
if (ret)
|
|
DRM_INFO("failed to find VBIOS tables\n");
|
|
|
|
/* If we have > 1 VGA cards, then we need to arbitrate access
|
|
* to the common VGA resources.
|
|
*
|
|
* If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA),
|
|
* then we do not take part in VGA arbitration and the
|
|
* vga_client_register() fails with -ENODEV.
|
|
*/
|
|
ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
|
|
if (ret && ret != -ENODEV)
|
|
goto out;
|
|
|
|
intel_register_dsm_handler();
|
|
|
|
ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops, false);
|
|
if (ret)
|
|
goto cleanup_vga_client;
|
|
|
|
/* must happen before intel_power_domains_init_hw() on VLV/CHV */
|
|
intel_update_rawclk(dev_priv);
|
|
|
|
intel_power_domains_init_hw(dev_priv, false);
|
|
|
|
intel_csr_ucode_init(dev_priv);
|
|
|
|
ret = intel_irq_install(dev_priv);
|
|
if (ret)
|
|
goto cleanup_csr;
|
|
|
|
intel_setup_gmbus(dev);
|
|
|
|
/* Important: The output setup functions called by modeset_init need
|
|
* working irqs for e.g. gmbus and dp aux transfers. */
|
|
intel_modeset_init(dev);
|
|
|
|
intel_guc_init(dev);
|
|
|
|
ret = i915_gem_init(dev);
|
|
if (ret)
|
|
goto cleanup_irq;
|
|
|
|
intel_modeset_gem_init(dev);
|
|
|
|
if (INTEL_INFO(dev)->num_pipes == 0)
|
|
return 0;
|
|
|
|
ret = intel_fbdev_init(dev);
|
|
if (ret)
|
|
goto cleanup_gem;
|
|
|
|
/* Only enable hotplug handling once the fbdev is fully set up. */
|
|
intel_hpd_init(dev_priv);
|
|
|
|
drm_kms_helper_poll_init(dev);
|
|
|
|
return 0;
|
|
|
|
cleanup_gem:
|
|
i915_gem_fini(dev);
|
|
cleanup_irq:
|
|
intel_guc_fini(dev);
|
|
drm_irq_uninstall(dev);
|
|
intel_teardown_gmbus(dev);
|
|
cleanup_csr:
|
|
intel_csr_ucode_fini(dev_priv);
|
|
intel_power_domains_fini(dev_priv);
|
|
vga_switcheroo_unregister_client(dev->pdev);
|
|
cleanup_vga_client:
|
|
vga_client_register(dev->pdev, NULL, NULL, NULL);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_FB)
|
|
static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct apertures_struct *ap;
|
|
struct pci_dev *pdev = dev_priv->drm.pdev;
|
|
struct i915_ggtt *ggtt = &dev_priv->ggtt;
|
|
bool primary;
|
|
int ret;
|
|
|
|
ap = alloc_apertures(1);
|
|
if (!ap)
|
|
return -ENOMEM;
|
|
|
|
ap->ranges[0].base = ggtt->mappable_base;
|
|
ap->ranges[0].size = ggtt->mappable_end;
|
|
|
|
primary =
|
|
pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
|
|
|
|
ret = remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
|
|
|
|
kfree(ap);
|
|
|
|
return ret;
|
|
}
|
|
#else
|
|
static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#if !defined(CONFIG_VGA_CONSOLE)
|
|
static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv)
|
|
{
|
|
return 0;
|
|
}
|
|
#elif !defined(CONFIG_DUMMY_CONSOLE)
|
|
static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#else
|
|
static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv)
|
|
{
|
|
int ret = 0;
|
|
|
|
DRM_INFO("Replacing VGA console driver\n");
|
|
|
|
console_lock();
|
|
if (con_is_bound(&vga_con))
|
|
ret = do_take_over_console(&dummy_con, 0, MAX_NR_CONSOLES - 1, 1);
|
|
if (ret == 0) {
|
|
ret = do_unregister_con_driver(&vga_con);
|
|
|
|
/* Ignore "already unregistered". */
|
|
if (ret == -ENODEV)
|
|
ret = 0;
|
|
}
|
|
console_unlock();
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
static void intel_init_dpio(struct drm_i915_private *dev_priv)
|
|
{
|
|
/*
|
|
* IOSF_PORT_DPIO is used for VLV x2 PHY (DP/HDMI B and C),
|
|
* CHV x1 PHY (DP/HDMI D)
|
|
* IOSF_PORT_DPIO_2 is used for CHV x2 PHY (DP/HDMI B and C)
|
|
*/
|
|
if (IS_CHERRYVIEW(dev_priv)) {
|
|
DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO_2;
|
|
DPIO_PHY_IOSF_PORT(DPIO_PHY1) = IOSF_PORT_DPIO;
|
|
} else if (IS_VALLEYVIEW(dev_priv)) {
|
|
DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO;
|
|
}
|
|
}
|
|
|
|
static int i915_workqueues_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
/*
|
|
* The i915 workqueue is primarily used for batched retirement of
|
|
* requests (and thus managing bo) once the task has been completed
|
|
* by the GPU. i915_gem_retire_requests() is called directly when we
|
|
* need high-priority retirement, such as waiting for an explicit
|
|
* bo.
|
|
*
|
|
* It is also used for periodic low-priority events, such as
|
|
* idle-timers and recording error state.
|
|
*
|
|
* All tasks on the workqueue are expected to acquire the dev mutex
|
|
* so there is no point in running more than one instance of the
|
|
* workqueue at any time. Use an ordered one.
|
|
*/
|
|
dev_priv->wq = alloc_ordered_workqueue("i915", 0);
|
|
if (dev_priv->wq == NULL)
|
|
goto out_err;
|
|
|
|
dev_priv->hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0);
|
|
if (dev_priv->hotplug.dp_wq == NULL)
|
|
goto out_free_wq;
|
|
|
|
return 0;
|
|
|
|
out_free_wq:
|
|
destroy_workqueue(dev_priv->wq);
|
|
out_err:
|
|
DRM_ERROR("Failed to allocate workqueues.\n");
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv)
|
|
{
|
|
destroy_workqueue(dev_priv->hotplug.dp_wq);
|
|
destroy_workqueue(dev_priv->wq);
|
|
}
|
|
|
|
/**
|
|
* i915_driver_init_early - setup state not requiring device access
|
|
* @dev_priv: device private
|
|
*
|
|
* Initialize everything that is a "SW-only" state, that is state not
|
|
* requiring accessing the device or exposing the driver via kernel internal
|
|
* or userspace interfaces. Example steps belonging here: lock initialization,
|
|
* system memory allocation, setting up device specific attributes and
|
|
* function hooks not requiring accessing the device.
|
|
*/
|
|
static int i915_driver_init_early(struct drm_i915_private *dev_priv,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
const struct intel_device_info *match_info =
|
|
(struct intel_device_info *)ent->driver_data;
|
|
struct intel_device_info *device_info;
|
|
int ret = 0;
|
|
|
|
if (i915_inject_load_failure())
|
|
return -ENODEV;
|
|
|
|
/* Setup the write-once "constant" device info */
|
|
device_info = mkwrite_device_info(dev_priv);
|
|
memcpy(device_info, match_info, sizeof(*device_info));
|
|
device_info->device_id = dev_priv->drm.pdev->device;
|
|
|
|
BUG_ON(device_info->gen > sizeof(device_info->gen_mask) * BITS_PER_BYTE);
|
|
device_info->gen_mask = BIT(device_info->gen - 1);
|
|
|
|
spin_lock_init(&dev_priv->irq_lock);
|
|
spin_lock_init(&dev_priv->gpu_error.lock);
|
|
mutex_init(&dev_priv->backlight_lock);
|
|
spin_lock_init(&dev_priv->uncore.lock);
|
|
spin_lock_init(&dev_priv->mm.object_stat_lock);
|
|
spin_lock_init(&dev_priv->mmio_flip_lock);
|
|
mutex_init(&dev_priv->sb_lock);
|
|
mutex_init(&dev_priv->modeset_restore_lock);
|
|
mutex_init(&dev_priv->av_mutex);
|
|
mutex_init(&dev_priv->wm.wm_mutex);
|
|
mutex_init(&dev_priv->pps_mutex);
|
|
|
|
ret = i915_workqueues_init(dev_priv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = intel_gvt_init(dev_priv);
|
|
if (ret < 0)
|
|
goto err_workqueues;
|
|
|
|
/* This must be called before any calls to HAS_PCH_* */
|
|
intel_detect_pch(&dev_priv->drm);
|
|
|
|
intel_pm_setup(&dev_priv->drm);
|
|
intel_init_dpio(dev_priv);
|
|
intel_power_domains_init(dev_priv);
|
|
intel_irq_init(dev_priv);
|
|
intel_init_display_hooks(dev_priv);
|
|
intel_init_clock_gating_hooks(dev_priv);
|
|
intel_init_audio_hooks(dev_priv);
|
|
i915_gem_load_init(&dev_priv->drm);
|
|
|
|
intel_display_crc_init(&dev_priv->drm);
|
|
|
|
intel_device_info_dump(dev_priv);
|
|
|
|
/* Not all pre-production machines fall into this category, only the
|
|
* very first ones. Almost everything should work, except for maybe
|
|
* suspend/resume. And we don't implement workarounds that affect only
|
|
* pre-production machines. */
|
|
if (IS_HSW_EARLY_SDV(dev_priv))
|
|
DRM_INFO("This is an early pre-production Haswell machine. "
|
|
"It may not be fully functional.\n");
|
|
|
|
return 0;
|
|
|
|
err_workqueues:
|
|
i915_workqueues_cleanup(dev_priv);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i915_driver_cleanup_early - cleanup the setup done in i915_driver_init_early()
|
|
* @dev_priv: device private
|
|
*/
|
|
static void i915_driver_cleanup_early(struct drm_i915_private *dev_priv)
|
|
{
|
|
i915_gem_load_cleanup(&dev_priv->drm);
|
|
i915_workqueues_cleanup(dev_priv);
|
|
}
|
|
|
|
static int i915_mmio_setup(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
int mmio_bar;
|
|
int mmio_size;
|
|
|
|
mmio_bar = IS_GEN2(dev) ? 1 : 0;
|
|
/*
|
|
* Before gen4, the registers and the GTT are behind different BARs.
|
|
* However, from gen4 onwards, the registers and the GTT are shared
|
|
* in the same BAR, so we want to restrict this ioremap from
|
|
* clobbering the GTT which we want ioremap_wc instead. Fortunately,
|
|
* the register BAR remains the same size for all the earlier
|
|
* generations up to Ironlake.
|
|
*/
|
|
if (INTEL_INFO(dev)->gen < 5)
|
|
mmio_size = 512 * 1024;
|
|
else
|
|
mmio_size = 2 * 1024 * 1024;
|
|
dev_priv->regs = pci_iomap(dev->pdev, mmio_bar, mmio_size);
|
|
if (dev_priv->regs == NULL) {
|
|
DRM_ERROR("failed to map registers\n");
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
/* Try to make sure MCHBAR is enabled before poking at it */
|
|
intel_setup_mchbar(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void i915_mmio_cleanup(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
intel_teardown_mchbar(dev);
|
|
pci_iounmap(dev->pdev, dev_priv->regs);
|
|
}
|
|
|
|
/**
|
|
* i915_driver_init_mmio - setup device MMIO
|
|
* @dev_priv: device private
|
|
*
|
|
* Setup minimal device state necessary for MMIO accesses later in the
|
|
* initialization sequence. The setup here should avoid any other device-wide
|
|
* side effects or exposing the driver via kernel internal or user space
|
|
* interfaces.
|
|
*/
|
|
static int i915_driver_init_mmio(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
int ret;
|
|
|
|
if (i915_inject_load_failure())
|
|
return -ENODEV;
|
|
|
|
if (i915_get_bridge_dev(dev))
|
|
return -EIO;
|
|
|
|
ret = i915_mmio_setup(dev);
|
|
if (ret < 0)
|
|
goto put_bridge;
|
|
|
|
intel_uncore_init(dev_priv);
|
|
|
|
return 0;
|
|
|
|
put_bridge:
|
|
pci_dev_put(dev_priv->bridge_dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i915_driver_cleanup_mmio - cleanup the setup done in i915_driver_init_mmio()
|
|
* @dev_priv: device private
|
|
*/
|
|
static void i915_driver_cleanup_mmio(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
|
|
intel_uncore_fini(dev_priv);
|
|
i915_mmio_cleanup(dev);
|
|
pci_dev_put(dev_priv->bridge_dev);
|
|
}
|
|
|
|
static void intel_sanitize_options(struct drm_i915_private *dev_priv)
|
|
{
|
|
i915.enable_execlists =
|
|
intel_sanitize_enable_execlists(dev_priv,
|
|
i915.enable_execlists);
|
|
|
|
/*
|
|
* i915.enable_ppgtt is read-only, so do an early pass to validate the
|
|
* user's requested state against the hardware/driver capabilities. We
|
|
* do this now so that we can print out any log messages once rather
|
|
* than every time we check intel_enable_ppgtt().
|
|
*/
|
|
i915.enable_ppgtt =
|
|
intel_sanitize_enable_ppgtt(dev_priv, i915.enable_ppgtt);
|
|
DRM_DEBUG_DRIVER("ppgtt mode: %i\n", i915.enable_ppgtt);
|
|
}
|
|
|
|
/**
|
|
* i915_driver_init_hw - setup state requiring device access
|
|
* @dev_priv: device private
|
|
*
|
|
* Setup state that requires accessing the device, but doesn't require
|
|
* exposing the driver via kernel internal or userspace interfaces.
|
|
*/
|
|
static int i915_driver_init_hw(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
struct i915_ggtt *ggtt = &dev_priv->ggtt;
|
|
uint32_t aperture_size;
|
|
int ret;
|
|
|
|
if (i915_inject_load_failure())
|
|
return -ENODEV;
|
|
|
|
intel_device_info_runtime_init(dev_priv);
|
|
|
|
intel_sanitize_options(dev_priv);
|
|
|
|
ret = i915_ggtt_init_hw(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = i915_ggtt_enable_hw(dev);
|
|
if (ret) {
|
|
DRM_ERROR("failed to enable GGTT\n");
|
|
goto out_ggtt;
|
|
}
|
|
|
|
/* WARNING: Apparently we must kick fbdev drivers before vgacon,
|
|
* otherwise the vga fbdev driver falls over. */
|
|
ret = i915_kick_out_firmware_fb(dev_priv);
|
|
if (ret) {
|
|
DRM_ERROR("failed to remove conflicting framebuffer drivers\n");
|
|
goto out_ggtt;
|
|
}
|
|
|
|
ret = i915_kick_out_vgacon(dev_priv);
|
|
if (ret) {
|
|
DRM_ERROR("failed to remove conflicting VGA console\n");
|
|
goto out_ggtt;
|
|
}
|
|
|
|
pci_set_master(dev->pdev);
|
|
|
|
/* overlay on gen2 is broken and can't address above 1G */
|
|
if (IS_GEN2(dev)) {
|
|
ret = dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(30));
|
|
if (ret) {
|
|
DRM_ERROR("failed to set DMA mask\n");
|
|
|
|
goto out_ggtt;
|
|
}
|
|
}
|
|
|
|
|
|
/* 965GM sometimes incorrectly writes to hardware status page (HWS)
|
|
* using 32bit addressing, overwriting memory if HWS is located
|
|
* above 4GB.
|
|
*
|
|
* The documentation also mentions an issue with undefined
|
|
* behaviour if any general state is accessed within a page above 4GB,
|
|
* which also needs to be handled carefully.
|
|
*/
|
|
if (IS_BROADWATER(dev) || IS_CRESTLINE(dev)) {
|
|
ret = dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(32));
|
|
|
|
if (ret) {
|
|
DRM_ERROR("failed to set DMA mask\n");
|
|
|
|
goto out_ggtt;
|
|
}
|
|
}
|
|
|
|
aperture_size = ggtt->mappable_end;
|
|
|
|
ggtt->mappable =
|
|
io_mapping_create_wc(ggtt->mappable_base,
|
|
aperture_size);
|
|
if (!ggtt->mappable) {
|
|
ret = -EIO;
|
|
goto out_ggtt;
|
|
}
|
|
|
|
ggtt->mtrr = arch_phys_wc_add(ggtt->mappable_base,
|
|
aperture_size);
|
|
|
|
pm_qos_add_request(&dev_priv->pm_qos, PM_QOS_CPU_DMA_LATENCY,
|
|
PM_QOS_DEFAULT_VALUE);
|
|
|
|
intel_uncore_sanitize(dev_priv);
|
|
|
|
intel_opregion_setup(dev_priv);
|
|
|
|
i915_gem_load_init_fences(dev_priv);
|
|
|
|
/* On the 945G/GM, the chipset reports the MSI capability on the
|
|
* integrated graphics even though the support isn't actually there
|
|
* according to the published specs. It doesn't appear to function
|
|
* correctly in testing on 945G.
|
|
* This may be a side effect of MSI having been made available for PEG
|
|
* and the registers being closely associated.
|
|
*
|
|
* According to chipset errata, on the 965GM, MSI interrupts may
|
|
* be lost or delayed, but we use them anyways to avoid
|
|
* stuck interrupts on some machines.
|
|
*/
|
|
if (!IS_I945G(dev) && !IS_I945GM(dev)) {
|
|
if (pci_enable_msi(dev->pdev) < 0)
|
|
DRM_DEBUG_DRIVER("can't enable MSI");
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_ggtt:
|
|
i915_ggtt_cleanup_hw(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* i915_driver_cleanup_hw - cleanup the setup done in i915_driver_init_hw()
|
|
* @dev_priv: device private
|
|
*/
|
|
static void i915_driver_cleanup_hw(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
struct i915_ggtt *ggtt = &dev_priv->ggtt;
|
|
|
|
if (dev->pdev->msi_enabled)
|
|
pci_disable_msi(dev->pdev);
|
|
|
|
pm_qos_remove_request(&dev_priv->pm_qos);
|
|
arch_phys_wc_del(ggtt->mtrr);
|
|
io_mapping_free(ggtt->mappable);
|
|
i915_ggtt_cleanup_hw(dev);
|
|
}
|
|
|
|
/**
|
|
* i915_driver_register - register the driver with the rest of the system
|
|
* @dev_priv: device private
|
|
*
|
|
* Perform any steps necessary to make the driver available via kernel
|
|
* internal or userspace interfaces.
|
|
*/
|
|
static void i915_driver_register(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
|
|
i915_gem_shrinker_init(dev_priv);
|
|
|
|
/*
|
|
* Notify a valid surface after modesetting,
|
|
* when running inside a VM.
|
|
*/
|
|
if (intel_vgpu_active(dev_priv))
|
|
I915_WRITE(vgtif_reg(display_ready), VGT_DRV_DISPLAY_READY);
|
|
|
|
/* Reveal our presence to userspace */
|
|
if (drm_dev_register(dev, 0) == 0) {
|
|
i915_debugfs_register(dev_priv);
|
|
i915_setup_sysfs(dev);
|
|
} else
|
|
DRM_ERROR("Failed to register driver for userspace access!\n");
|
|
|
|
if (INTEL_INFO(dev_priv)->num_pipes) {
|
|
/* Must be done after probing outputs */
|
|
intel_opregion_register(dev_priv);
|
|
acpi_video_register();
|
|
}
|
|
|
|
if (IS_GEN5(dev_priv))
|
|
intel_gpu_ips_init(dev_priv);
|
|
|
|
i915_audio_component_init(dev_priv);
|
|
|
|
/*
|
|
* Some ports require correctly set-up hpd registers for detection to
|
|
* work properly (leading to ghost connected connector status), e.g. VGA
|
|
* on gm45. Hence we can only set up the initial fbdev config after hpd
|
|
* irqs are fully enabled. We do it last so that the async config
|
|
* cannot run before the connectors are registered.
|
|
*/
|
|
intel_fbdev_initial_config_async(dev);
|
|
}
|
|
|
|
/**
|
|
* i915_driver_unregister - cleanup the registration done in i915_driver_regiser()
|
|
* @dev_priv: device private
|
|
*/
|
|
static void i915_driver_unregister(struct drm_i915_private *dev_priv)
|
|
{
|
|
i915_audio_component_cleanup(dev_priv);
|
|
|
|
intel_gpu_ips_teardown();
|
|
acpi_video_unregister();
|
|
intel_opregion_unregister(dev_priv);
|
|
|
|
i915_teardown_sysfs(&dev_priv->drm);
|
|
i915_debugfs_unregister(dev_priv);
|
|
drm_dev_unregister(&dev_priv->drm);
|
|
|
|
i915_gem_shrinker_cleanup(dev_priv);
|
|
}
|
|
|
|
/**
|
|
* i915_driver_load - setup chip and create an initial config
|
|
* @dev: DRM device
|
|
* @flags: startup flags
|
|
*
|
|
* The driver load routine has to do several things:
|
|
* - drive output discovery via intel_modeset_init()
|
|
* - initialize the memory manager
|
|
* - allocate initial config memory
|
|
* - setup the DRM framebuffer with the allocated memory
|
|
*/
|
|
int i915_driver_load(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
struct drm_i915_private *dev_priv;
|
|
int ret;
|
|
|
|
if (i915.nuclear_pageflip)
|
|
driver.driver_features |= DRIVER_ATOMIC;
|
|
|
|
ret = -ENOMEM;
|
|
dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
|
|
if (dev_priv)
|
|
ret = drm_dev_init(&dev_priv->drm, &driver, &pdev->dev);
|
|
if (ret) {
|
|
dev_printk(KERN_ERR, &pdev->dev,
|
|
"[" DRM_NAME ":%s] allocation failed\n", __func__);
|
|
kfree(dev_priv);
|
|
return ret;
|
|
}
|
|
|
|
dev_priv->drm.pdev = pdev;
|
|
dev_priv->drm.dev_private = dev_priv;
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret)
|
|
goto out_free_priv;
|
|
|
|
pci_set_drvdata(pdev, &dev_priv->drm);
|
|
|
|
ret = i915_driver_init_early(dev_priv, ent);
|
|
if (ret < 0)
|
|
goto out_pci_disable;
|
|
|
|
intel_runtime_pm_get(dev_priv);
|
|
|
|
ret = i915_driver_init_mmio(dev_priv);
|
|
if (ret < 0)
|
|
goto out_runtime_pm_put;
|
|
|
|
ret = i915_driver_init_hw(dev_priv);
|
|
if (ret < 0)
|
|
goto out_cleanup_mmio;
|
|
|
|
/*
|
|
* TODO: move the vblank init and parts of modeset init steps into one
|
|
* of the i915_driver_init_/i915_driver_register functions according
|
|
* to the role/effect of the given init step.
|
|
*/
|
|
if (INTEL_INFO(dev_priv)->num_pipes) {
|
|
ret = drm_vblank_init(&dev_priv->drm,
|
|
INTEL_INFO(dev_priv)->num_pipes);
|
|
if (ret)
|
|
goto out_cleanup_hw;
|
|
}
|
|
|
|
ret = i915_load_modeset_init(&dev_priv->drm);
|
|
if (ret < 0)
|
|
goto out_cleanup_vblank;
|
|
|
|
i915_driver_register(dev_priv);
|
|
|
|
intel_runtime_pm_enable(dev_priv);
|
|
|
|
intel_runtime_pm_put(dev_priv);
|
|
|
|
return 0;
|
|
|
|
out_cleanup_vblank:
|
|
drm_vblank_cleanup(&dev_priv->drm);
|
|
out_cleanup_hw:
|
|
i915_driver_cleanup_hw(dev_priv);
|
|
out_cleanup_mmio:
|
|
i915_driver_cleanup_mmio(dev_priv);
|
|
out_runtime_pm_put:
|
|
intel_runtime_pm_put(dev_priv);
|
|
i915_driver_cleanup_early(dev_priv);
|
|
out_pci_disable:
|
|
pci_disable_device(pdev);
|
|
out_free_priv:
|
|
i915_load_error(dev_priv, "Device initialization failed (%d)\n", ret);
|
|
drm_dev_unref(&dev_priv->drm);
|
|
return ret;
|
|
}
|
|
|
|
void i915_driver_unload(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
intel_fbdev_fini(dev);
|
|
|
|
if (i915_gem_suspend(dev))
|
|
DRM_ERROR("failed to idle hardware; continuing to unload!\n");
|
|
|
|
intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
|
|
|
|
i915_driver_unregister(dev_priv);
|
|
|
|
drm_vblank_cleanup(dev);
|
|
|
|
intel_modeset_cleanup(dev);
|
|
|
|
/*
|
|
* free the memory space allocated for the child device
|
|
* config parsed from VBT
|
|
*/
|
|
if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) {
|
|
kfree(dev_priv->vbt.child_dev);
|
|
dev_priv->vbt.child_dev = NULL;
|
|
dev_priv->vbt.child_dev_num = 0;
|
|
}
|
|
kfree(dev_priv->vbt.sdvo_lvds_vbt_mode);
|
|
dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
|
|
kfree(dev_priv->vbt.lfp_lvds_vbt_mode);
|
|
dev_priv->vbt.lfp_lvds_vbt_mode = NULL;
|
|
|
|
vga_switcheroo_unregister_client(dev->pdev);
|
|
vga_client_register(dev->pdev, NULL, NULL, NULL);
|
|
|
|
intel_csr_ucode_fini(dev_priv);
|
|
|
|
/* Free error state after interrupts are fully disabled. */
|
|
cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work);
|
|
i915_destroy_error_state(dev);
|
|
|
|
/* Flush any outstanding unpin_work. */
|
|
drain_workqueue(dev_priv->wq);
|
|
|
|
intel_guc_fini(dev);
|
|
i915_gem_fini(dev);
|
|
intel_fbc_cleanup_cfb(dev_priv);
|
|
|
|
intel_power_domains_fini(dev_priv);
|
|
|
|
i915_driver_cleanup_hw(dev_priv);
|
|
i915_driver_cleanup_mmio(dev_priv);
|
|
|
|
intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
|
|
|
|
i915_driver_cleanup_early(dev_priv);
|
|
}
|
|
|
|
static int i915_driver_open(struct drm_device *dev, struct drm_file *file)
|
|
{
|
|
int ret;
|
|
|
|
ret = i915_gem_open(dev, file);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i915_driver_lastclose - clean up after all DRM clients have exited
|
|
* @dev: DRM device
|
|
*
|
|
* Take care of cleaning up after all DRM clients have exited. In the
|
|
* mode setting case, we want to restore the kernel's initial mode (just
|
|
* in case the last client left us in a bad state).
|
|
*
|
|
* Additionally, in the non-mode setting case, we'll tear down the GTT
|
|
* and DMA structures, since the kernel won't be using them, and clea
|
|
* up any GEM state.
|
|
*/
|
|
static void i915_driver_lastclose(struct drm_device *dev)
|
|
{
|
|
intel_fbdev_restore_mode(dev);
|
|
vga_switcheroo_process_delayed_switch();
|
|
}
|
|
|
|
static void i915_driver_preclose(struct drm_device *dev, struct drm_file *file)
|
|
{
|
|
mutex_lock(&dev->struct_mutex);
|
|
i915_gem_context_close(dev, file);
|
|
i915_gem_release(dev, file);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
}
|
|
|
|
static void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
|
|
{
|
|
struct drm_i915_file_private *file_priv = file->driver_priv;
|
|
|
|
kfree(file_priv);
|
|
}
|
|
|
|
static void intel_suspend_encoders(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
struct intel_encoder *encoder;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
for_each_intel_encoder(dev, encoder)
|
|
if (encoder->suspend)
|
|
encoder->suspend(encoder);
|
|
drm_modeset_unlock_all(dev);
|
|
}
|
|
|
|
static int vlv_resume_prepare(struct drm_i915_private *dev_priv,
|
|
bool rpm_resume);
|
|
static int vlv_suspend_complete(struct drm_i915_private *dev_priv);
|
|
|
|
static bool suspend_to_idle(struct drm_i915_private *dev_priv)
|
|
{
|
|
#if IS_ENABLED(CONFIG_ACPI_SLEEP)
|
|
if (acpi_target_system_state() < ACPI_STATE_S3)
|
|
return true;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
static int i915_drm_suspend(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
pci_power_t opregion_target_state;
|
|
int error;
|
|
|
|
/* ignore lid events during suspend */
|
|
mutex_lock(&dev_priv->modeset_restore_lock);
|
|
dev_priv->modeset_restore = MODESET_SUSPENDED;
|
|
mutex_unlock(&dev_priv->modeset_restore_lock);
|
|
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
/* We do a lot of poking in a lot of registers, make sure they work
|
|
* properly. */
|
|
intel_display_set_init_power(dev_priv, true);
|
|
|
|
drm_kms_helper_poll_disable(dev);
|
|
|
|
pci_save_state(dev->pdev);
|
|
|
|
error = i915_gem_suspend(dev);
|
|
if (error) {
|
|
dev_err(&dev->pdev->dev,
|
|
"GEM idle failed, resume might fail\n");
|
|
goto out;
|
|
}
|
|
|
|
intel_guc_suspend(dev);
|
|
|
|
intel_display_suspend(dev);
|
|
|
|
intel_dp_mst_suspend(dev);
|
|
|
|
intel_runtime_pm_disable_interrupts(dev_priv);
|
|
intel_hpd_cancel_work(dev_priv);
|
|
|
|
intel_suspend_encoders(dev_priv);
|
|
|
|
intel_suspend_hw(dev);
|
|
|
|
i915_gem_suspend_gtt_mappings(dev);
|
|
|
|
i915_save_state(dev);
|
|
|
|
opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold;
|
|
intel_opregion_notify_adapter(dev_priv, opregion_target_state);
|
|
|
|
intel_uncore_forcewake_reset(dev_priv, false);
|
|
intel_opregion_unregister(dev_priv);
|
|
|
|
intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true);
|
|
|
|
dev_priv->suspend_count++;
|
|
|
|
intel_display_set_init_power(dev_priv, false);
|
|
|
|
intel_csr_ucode_suspend(dev_priv);
|
|
|
|
out:
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
return error;
|
|
}
|
|
|
|
static int i915_drm_suspend_late(struct drm_device *drm_dev, bool hibernation)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(drm_dev);
|
|
bool fw_csr;
|
|
int ret;
|
|
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
fw_csr = !IS_BROXTON(dev_priv) &&
|
|
suspend_to_idle(dev_priv) && dev_priv->csr.dmc_payload;
|
|
/*
|
|
* In case of firmware assisted context save/restore don't manually
|
|
* deinit the power domains. This also means the CSR/DMC firmware will
|
|
* stay active, it will power down any HW resources as required and
|
|
* also enable deeper system power states that would be blocked if the
|
|
* firmware was inactive.
|
|
*/
|
|
if (!fw_csr)
|
|
intel_power_domains_suspend(dev_priv);
|
|
|
|
ret = 0;
|
|
if (IS_BROXTON(dev_priv))
|
|
bxt_enable_dc9(dev_priv);
|
|
else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
|
|
hsw_enable_pc8(dev_priv);
|
|
else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
|
|
ret = vlv_suspend_complete(dev_priv);
|
|
|
|
if (ret) {
|
|
DRM_ERROR("Suspend complete failed: %d\n", ret);
|
|
if (!fw_csr)
|
|
intel_power_domains_init_hw(dev_priv, true);
|
|
|
|
goto out;
|
|
}
|
|
|
|
pci_disable_device(drm_dev->pdev);
|
|
/*
|
|
* During hibernation on some platforms the BIOS may try to access
|
|
* the device even though it's already in D3 and hang the machine. So
|
|
* leave the device in D0 on those platforms and hope the BIOS will
|
|
* power down the device properly. The issue was seen on multiple old
|
|
* GENs with different BIOS vendors, so having an explicit blacklist
|
|
* is inpractical; apply the workaround on everything pre GEN6. The
|
|
* platforms where the issue was seen:
|
|
* Lenovo Thinkpad X301, X61s, X60, T60, X41
|
|
* Fujitsu FSC S7110
|
|
* Acer Aspire 1830T
|
|
*/
|
|
if (!(hibernation && INTEL_INFO(dev_priv)->gen < 6))
|
|
pci_set_power_state(drm_dev->pdev, PCI_D3hot);
|
|
|
|
dev_priv->suspended_to_idle = suspend_to_idle(dev_priv);
|
|
|
|
out:
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int i915_suspend_switcheroo(struct drm_device *dev, pm_message_t state)
|
|
{
|
|
int error;
|
|
|
|
if (!dev) {
|
|
DRM_ERROR("dev: %p\n", dev);
|
|
DRM_ERROR("DRM not initialized, aborting suspend.\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (WARN_ON_ONCE(state.event != PM_EVENT_SUSPEND &&
|
|
state.event != PM_EVENT_FREEZE))
|
|
return -EINVAL;
|
|
|
|
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
error = i915_drm_suspend(dev);
|
|
if (error)
|
|
return error;
|
|
|
|
return i915_drm_suspend_late(dev, false);
|
|
}
|
|
|
|
static int i915_drm_resume(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
int ret;
|
|
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
ret = i915_ggtt_enable_hw(dev);
|
|
if (ret)
|
|
DRM_ERROR("failed to re-enable GGTT\n");
|
|
|
|
intel_csr_ucode_resume(dev_priv);
|
|
|
|
i915_gem_resume(dev);
|
|
|
|
i915_restore_state(dev);
|
|
intel_opregion_setup(dev_priv);
|
|
|
|
intel_init_pch_refclk(dev);
|
|
drm_mode_config_reset(dev);
|
|
|
|
/*
|
|
* Interrupts have to be enabled before any batches are run. If not the
|
|
* GPU will hang. i915_gem_init_hw() will initiate batches to
|
|
* update/restore the context.
|
|
*
|
|
* Modeset enabling in intel_modeset_init_hw() also needs working
|
|
* interrupts.
|
|
*/
|
|
intel_runtime_pm_enable_interrupts(dev_priv);
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
if (i915_gem_init_hw(dev)) {
|
|
DRM_ERROR("failed to re-initialize GPU, declaring wedged!\n");
|
|
atomic_or(I915_WEDGED, &dev_priv->gpu_error.reset_counter);
|
|
}
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
intel_guc_resume(dev);
|
|
|
|
intel_modeset_init_hw(dev);
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
if (dev_priv->display.hpd_irq_setup)
|
|
dev_priv->display.hpd_irq_setup(dev_priv);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
intel_dp_mst_resume(dev);
|
|
|
|
intel_display_resume(dev);
|
|
|
|
/*
|
|
* ... but also need to make sure that hotplug processing
|
|
* doesn't cause havoc. Like in the driver load code we don't
|
|
* bother with the tiny race here where we might loose hotplug
|
|
* notifications.
|
|
* */
|
|
intel_hpd_init(dev_priv);
|
|
/* Config may have changed between suspend and resume */
|
|
drm_helper_hpd_irq_event(dev);
|
|
|
|
intel_opregion_register(dev_priv);
|
|
|
|
intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false);
|
|
|
|
mutex_lock(&dev_priv->modeset_restore_lock);
|
|
dev_priv->modeset_restore = MODESET_DONE;
|
|
mutex_unlock(&dev_priv->modeset_restore_lock);
|
|
|
|
intel_opregion_notify_adapter(dev_priv, PCI_D0);
|
|
|
|
intel_autoenable_gt_powersave(dev_priv);
|
|
drm_kms_helper_poll_enable(dev);
|
|
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int i915_drm_resume_early(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
int ret;
|
|
|
|
/*
|
|
* We have a resume ordering issue with the snd-hda driver also
|
|
* requiring our device to be power up. Due to the lack of a
|
|
* parent/child relationship we currently solve this with an early
|
|
* resume hook.
|
|
*
|
|
* FIXME: This should be solved with a special hdmi sink device or
|
|
* similar so that power domains can be employed.
|
|
*/
|
|
|
|
/*
|
|
* Note that we need to set the power state explicitly, since we
|
|
* powered off the device during freeze and the PCI core won't power
|
|
* it back up for us during thaw. Powering off the device during
|
|
* freeze is not a hard requirement though, and during the
|
|
* suspend/resume phases the PCI core makes sure we get here with the
|
|
* device powered on. So in case we change our freeze logic and keep
|
|
* the device powered we can also remove the following set power state
|
|
* call.
|
|
*/
|
|
ret = pci_set_power_state(dev->pdev, PCI_D0);
|
|
if (ret) {
|
|
DRM_ERROR("failed to set PCI D0 power state (%d)\n", ret);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Note that pci_enable_device() first enables any parent bridge
|
|
* device and only then sets the power state for this device. The
|
|
* bridge enabling is a nop though, since bridge devices are resumed
|
|
* first. The order of enabling power and enabling the device is
|
|
* imposed by the PCI core as described above, so here we preserve the
|
|
* same order for the freeze/thaw phases.
|
|
*
|
|
* TODO: eventually we should remove pci_disable_device() /
|
|
* pci_enable_enable_device() from suspend/resume. Due to how they
|
|
* depend on the device enable refcount we can't anyway depend on them
|
|
* disabling/enabling the device.
|
|
*/
|
|
if (pci_enable_device(dev->pdev)) {
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
pci_set_master(dev->pdev);
|
|
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
|
|
ret = vlv_resume_prepare(dev_priv, false);
|
|
if (ret)
|
|
DRM_ERROR("Resume prepare failed: %d, continuing anyway\n",
|
|
ret);
|
|
|
|
intel_uncore_early_sanitize(dev_priv, true);
|
|
|
|
if (IS_BROXTON(dev_priv)) {
|
|
if (!dev_priv->suspended_to_idle)
|
|
gen9_sanitize_dc_state(dev_priv);
|
|
bxt_disable_dc9(dev_priv);
|
|
} else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
|
|
hsw_disable_pc8(dev_priv);
|
|
}
|
|
|
|
intel_uncore_sanitize(dev_priv);
|
|
|
|
if (IS_BROXTON(dev_priv) ||
|
|
!(dev_priv->suspended_to_idle && dev_priv->csr.dmc_payload))
|
|
intel_power_domains_init_hw(dev_priv, true);
|
|
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
out:
|
|
dev_priv->suspended_to_idle = false;
|
|
|
|
return ret;
|
|
}
|
|
|
|
int i915_resume_switcheroo(struct drm_device *dev)
|
|
{
|
|
int ret;
|
|
|
|
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
ret = i915_drm_resume_early(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return i915_drm_resume(dev);
|
|
}
|
|
|
|
/**
|
|
* i915_reset - reset chip after a hang
|
|
* @dev: drm device to reset
|
|
*
|
|
* Reset the chip. Useful if a hang is detected. Returns zero on successful
|
|
* reset or otherwise an error code.
|
|
*
|
|
* Procedure is fairly simple:
|
|
* - reset the chip using the reset reg
|
|
* - re-init context state
|
|
* - re-init hardware status page
|
|
* - re-init ring buffer
|
|
* - re-init interrupt state
|
|
* - re-init display
|
|
*/
|
|
int i915_reset(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
struct i915_gpu_error *error = &dev_priv->gpu_error;
|
|
unsigned reset_counter;
|
|
int ret;
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
|
|
/* Clear any previous failed attempts at recovery. Time to try again. */
|
|
atomic_andnot(I915_WEDGED, &error->reset_counter);
|
|
|
|
/* Clear the reset-in-progress flag and increment the reset epoch. */
|
|
reset_counter = atomic_inc_return(&error->reset_counter);
|
|
if (WARN_ON(__i915_reset_in_progress(reset_counter))) {
|
|
ret = -EIO;
|
|
goto error;
|
|
}
|
|
|
|
pr_notice("drm/i915: Resetting chip after gpu hang\n");
|
|
|
|
i915_gem_reset(dev);
|
|
|
|
ret = intel_gpu_reset(dev_priv, ALL_ENGINES);
|
|
if (ret) {
|
|
if (ret != -ENODEV)
|
|
DRM_ERROR("Failed to reset chip: %i\n", ret);
|
|
else
|
|
DRM_DEBUG_DRIVER("GPU reset disabled\n");
|
|
goto error;
|
|
}
|
|
|
|
intel_overlay_reset(dev_priv);
|
|
|
|
/* Ok, now get things going again... */
|
|
|
|
/*
|
|
* Everything depends on having the GTT running, so we need to start
|
|
* there. Fortunately we don't need to do this unless we reset the
|
|
* chip at a PCI level.
|
|
*
|
|
* Next we need to restore the context, but we don't use those
|
|
* yet either...
|
|
*
|
|
* Ring buffer needs to be re-initialized in the KMS case, or if X
|
|
* was running at the time of the reset (i.e. we weren't VT
|
|
* switched away).
|
|
*/
|
|
ret = i915_gem_init_hw(dev);
|
|
if (ret) {
|
|
DRM_ERROR("Failed hw init on reset %d\n", ret);
|
|
goto error;
|
|
}
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
/*
|
|
* rps/rc6 re-init is necessary to restore state lost after the
|
|
* reset and the re-install of gt irqs. Skip for ironlake per
|
|
* previous concerns that it doesn't respond well to some forms
|
|
* of re-init after reset.
|
|
*/
|
|
intel_autoenable_gt_powersave(dev_priv);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
atomic_or(I915_WEDGED, &error->reset_counter);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int i915_pm_suspend(struct device *dev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
struct drm_device *drm_dev = pci_get_drvdata(pdev);
|
|
|
|
if (!drm_dev) {
|
|
dev_err(dev, "DRM not initialized, aborting suspend.\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
return i915_drm_suspend(drm_dev);
|
|
}
|
|
|
|
static int i915_pm_suspend_late(struct device *dev)
|
|
{
|
|
struct drm_device *drm_dev = &dev_to_i915(dev)->drm;
|
|
|
|
/*
|
|
* We have a suspend ordering issue with the snd-hda driver also
|
|
* requiring our device to be power up. Due to the lack of a
|
|
* parent/child relationship we currently solve this with an late
|
|
* suspend hook.
|
|
*
|
|
* FIXME: This should be solved with a special hdmi sink device or
|
|
* similar so that power domains can be employed.
|
|
*/
|
|
if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
return i915_drm_suspend_late(drm_dev, false);
|
|
}
|
|
|
|
static int i915_pm_poweroff_late(struct device *dev)
|
|
{
|
|
struct drm_device *drm_dev = &dev_to_i915(dev)->drm;
|
|
|
|
if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
return i915_drm_suspend_late(drm_dev, true);
|
|
}
|
|
|
|
static int i915_pm_resume_early(struct device *dev)
|
|
{
|
|
struct drm_device *drm_dev = &dev_to_i915(dev)->drm;
|
|
|
|
if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
return i915_drm_resume_early(drm_dev);
|
|
}
|
|
|
|
static int i915_pm_resume(struct device *dev)
|
|
{
|
|
struct drm_device *drm_dev = &dev_to_i915(dev)->drm;
|
|
|
|
if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
return i915_drm_resume(drm_dev);
|
|
}
|
|
|
|
/* freeze: before creating the hibernation_image */
|
|
static int i915_pm_freeze(struct device *dev)
|
|
{
|
|
return i915_pm_suspend(dev);
|
|
}
|
|
|
|
static int i915_pm_freeze_late(struct device *dev)
|
|
{
|
|
int ret;
|
|
|
|
ret = i915_pm_suspend_late(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = i915_gem_freeze_late(dev_to_i915(dev));
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* thaw: called after creating the hibernation image, but before turning off. */
|
|
static int i915_pm_thaw_early(struct device *dev)
|
|
{
|
|
return i915_pm_resume_early(dev);
|
|
}
|
|
|
|
static int i915_pm_thaw(struct device *dev)
|
|
{
|
|
return i915_pm_resume(dev);
|
|
}
|
|
|
|
/* restore: called after loading the hibernation image. */
|
|
static int i915_pm_restore_early(struct device *dev)
|
|
{
|
|
return i915_pm_resume_early(dev);
|
|
}
|
|
|
|
static int i915_pm_restore(struct device *dev)
|
|
{
|
|
return i915_pm_resume(dev);
|
|
}
|
|
|
|
/*
|
|
* Save all Gunit registers that may be lost after a D3 and a subsequent
|
|
* S0i[R123] transition. The list of registers needing a save/restore is
|
|
* defined in the VLV2_S0IXRegs document. This documents marks all Gunit
|
|
* registers in the following way:
|
|
* - Driver: saved/restored by the driver
|
|
* - Punit : saved/restored by the Punit firmware
|
|
* - No, w/o marking: no need to save/restore, since the register is R/O or
|
|
* used internally by the HW in a way that doesn't depend
|
|
* keeping the content across a suspend/resume.
|
|
* - Debug : used for debugging
|
|
*
|
|
* We save/restore all registers marked with 'Driver', with the following
|
|
* exceptions:
|
|
* - Registers out of use, including also registers marked with 'Debug'.
|
|
* These have no effect on the driver's operation, so we don't save/restore
|
|
* them to reduce the overhead.
|
|
* - Registers that are fully setup by an initialization function called from
|
|
* the resume path. For example many clock gating and RPS/RC6 registers.
|
|
* - Registers that provide the right functionality with their reset defaults.
|
|
*
|
|
* TODO: Except for registers that based on the above 3 criteria can be safely
|
|
* ignored, we save/restore all others, practically treating the HW context as
|
|
* a black-box for the driver. Further investigation is needed to reduce the
|
|
* saved/restored registers even further, by following the same 3 criteria.
|
|
*/
|
|
static void vlv_save_gunit_s0ix_state(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct vlv_s0ix_state *s = &dev_priv->vlv_s0ix_state;
|
|
int i;
|
|
|
|
/* GAM 0x4000-0x4770 */
|
|
s->wr_watermark = I915_READ(GEN7_WR_WATERMARK);
|
|
s->gfx_prio_ctrl = I915_READ(GEN7_GFX_PRIO_CTRL);
|
|
s->arb_mode = I915_READ(ARB_MODE);
|
|
s->gfx_pend_tlb0 = I915_READ(GEN7_GFX_PEND_TLB0);
|
|
s->gfx_pend_tlb1 = I915_READ(GEN7_GFX_PEND_TLB1);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(s->lra_limits); i++)
|
|
s->lra_limits[i] = I915_READ(GEN7_LRA_LIMITS(i));
|
|
|
|
s->media_max_req_count = I915_READ(GEN7_MEDIA_MAX_REQ_COUNT);
|
|
s->gfx_max_req_count = I915_READ(GEN7_GFX_MAX_REQ_COUNT);
|
|
|
|
s->render_hwsp = I915_READ(RENDER_HWS_PGA_GEN7);
|
|
s->ecochk = I915_READ(GAM_ECOCHK);
|
|
s->bsd_hwsp = I915_READ(BSD_HWS_PGA_GEN7);
|
|
s->blt_hwsp = I915_READ(BLT_HWS_PGA_GEN7);
|
|
|
|
s->tlb_rd_addr = I915_READ(GEN7_TLB_RD_ADDR);
|
|
|
|
/* MBC 0x9024-0x91D0, 0x8500 */
|
|
s->g3dctl = I915_READ(VLV_G3DCTL);
|
|
s->gsckgctl = I915_READ(VLV_GSCKGCTL);
|
|
s->mbctl = I915_READ(GEN6_MBCTL);
|
|
|
|
/* GCP 0x9400-0x9424, 0x8100-0x810C */
|
|
s->ucgctl1 = I915_READ(GEN6_UCGCTL1);
|
|
s->ucgctl3 = I915_READ(GEN6_UCGCTL3);
|
|
s->rcgctl1 = I915_READ(GEN6_RCGCTL1);
|
|
s->rcgctl2 = I915_READ(GEN6_RCGCTL2);
|
|
s->rstctl = I915_READ(GEN6_RSTCTL);
|
|
s->misccpctl = I915_READ(GEN7_MISCCPCTL);
|
|
|
|
/* GPM 0xA000-0xAA84, 0x8000-0x80FC */
|
|
s->gfxpause = I915_READ(GEN6_GFXPAUSE);
|
|
s->rpdeuhwtc = I915_READ(GEN6_RPDEUHWTC);
|
|
s->rpdeuc = I915_READ(GEN6_RPDEUC);
|
|
s->ecobus = I915_READ(ECOBUS);
|
|
s->pwrdwnupctl = I915_READ(VLV_PWRDWNUPCTL);
|
|
s->rp_down_timeout = I915_READ(GEN6_RP_DOWN_TIMEOUT);
|
|
s->rp_deucsw = I915_READ(GEN6_RPDEUCSW);
|
|
s->rcubmabdtmr = I915_READ(GEN6_RCUBMABDTMR);
|
|
s->rcedata = I915_READ(VLV_RCEDATA);
|
|
s->spare2gh = I915_READ(VLV_SPAREG2H);
|
|
|
|
/* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
|
|
s->gt_imr = I915_READ(GTIMR);
|
|
s->gt_ier = I915_READ(GTIER);
|
|
s->pm_imr = I915_READ(GEN6_PMIMR);
|
|
s->pm_ier = I915_READ(GEN6_PMIER);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(s->gt_scratch); i++)
|
|
s->gt_scratch[i] = I915_READ(GEN7_GT_SCRATCH(i));
|
|
|
|
/* GT SA CZ domain, 0x100000-0x138124 */
|
|
s->tilectl = I915_READ(TILECTL);
|
|
s->gt_fifoctl = I915_READ(GTFIFOCTL);
|
|
s->gtlc_wake_ctrl = I915_READ(VLV_GTLC_WAKE_CTRL);
|
|
s->gtlc_survive = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
|
|
s->pmwgicz = I915_READ(VLV_PMWGICZ);
|
|
|
|
/* Gunit-Display CZ domain, 0x182028-0x1821CF */
|
|
s->gu_ctl0 = I915_READ(VLV_GU_CTL0);
|
|
s->gu_ctl1 = I915_READ(VLV_GU_CTL1);
|
|
s->pcbr = I915_READ(VLV_PCBR);
|
|
s->clock_gate_dis2 = I915_READ(VLV_GUNIT_CLOCK_GATE2);
|
|
|
|
/*
|
|
* Not saving any of:
|
|
* DFT, 0x9800-0x9EC0
|
|
* SARB, 0xB000-0xB1FC
|
|
* GAC, 0x5208-0x524C, 0x14000-0x14C000
|
|
* PCI CFG
|
|
*/
|
|
}
|
|
|
|
static void vlv_restore_gunit_s0ix_state(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct vlv_s0ix_state *s = &dev_priv->vlv_s0ix_state;
|
|
u32 val;
|
|
int i;
|
|
|
|
/* GAM 0x4000-0x4770 */
|
|
I915_WRITE(GEN7_WR_WATERMARK, s->wr_watermark);
|
|
I915_WRITE(GEN7_GFX_PRIO_CTRL, s->gfx_prio_ctrl);
|
|
I915_WRITE(ARB_MODE, s->arb_mode | (0xffff << 16));
|
|
I915_WRITE(GEN7_GFX_PEND_TLB0, s->gfx_pend_tlb0);
|
|
I915_WRITE(GEN7_GFX_PEND_TLB1, s->gfx_pend_tlb1);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(s->lra_limits); i++)
|
|
I915_WRITE(GEN7_LRA_LIMITS(i), s->lra_limits[i]);
|
|
|
|
I915_WRITE(GEN7_MEDIA_MAX_REQ_COUNT, s->media_max_req_count);
|
|
I915_WRITE(GEN7_GFX_MAX_REQ_COUNT, s->gfx_max_req_count);
|
|
|
|
I915_WRITE(RENDER_HWS_PGA_GEN7, s->render_hwsp);
|
|
I915_WRITE(GAM_ECOCHK, s->ecochk);
|
|
I915_WRITE(BSD_HWS_PGA_GEN7, s->bsd_hwsp);
|
|
I915_WRITE(BLT_HWS_PGA_GEN7, s->blt_hwsp);
|
|
|
|
I915_WRITE(GEN7_TLB_RD_ADDR, s->tlb_rd_addr);
|
|
|
|
/* MBC 0x9024-0x91D0, 0x8500 */
|
|
I915_WRITE(VLV_G3DCTL, s->g3dctl);
|
|
I915_WRITE(VLV_GSCKGCTL, s->gsckgctl);
|
|
I915_WRITE(GEN6_MBCTL, s->mbctl);
|
|
|
|
/* GCP 0x9400-0x9424, 0x8100-0x810C */
|
|
I915_WRITE(GEN6_UCGCTL1, s->ucgctl1);
|
|
I915_WRITE(GEN6_UCGCTL3, s->ucgctl3);
|
|
I915_WRITE(GEN6_RCGCTL1, s->rcgctl1);
|
|
I915_WRITE(GEN6_RCGCTL2, s->rcgctl2);
|
|
I915_WRITE(GEN6_RSTCTL, s->rstctl);
|
|
I915_WRITE(GEN7_MISCCPCTL, s->misccpctl);
|
|
|
|
/* GPM 0xA000-0xAA84, 0x8000-0x80FC */
|
|
I915_WRITE(GEN6_GFXPAUSE, s->gfxpause);
|
|
I915_WRITE(GEN6_RPDEUHWTC, s->rpdeuhwtc);
|
|
I915_WRITE(GEN6_RPDEUC, s->rpdeuc);
|
|
I915_WRITE(ECOBUS, s->ecobus);
|
|
I915_WRITE(VLV_PWRDWNUPCTL, s->pwrdwnupctl);
|
|
I915_WRITE(GEN6_RP_DOWN_TIMEOUT,s->rp_down_timeout);
|
|
I915_WRITE(GEN6_RPDEUCSW, s->rp_deucsw);
|
|
I915_WRITE(GEN6_RCUBMABDTMR, s->rcubmabdtmr);
|
|
I915_WRITE(VLV_RCEDATA, s->rcedata);
|
|
I915_WRITE(VLV_SPAREG2H, s->spare2gh);
|
|
|
|
/* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
|
|
I915_WRITE(GTIMR, s->gt_imr);
|
|
I915_WRITE(GTIER, s->gt_ier);
|
|
I915_WRITE(GEN6_PMIMR, s->pm_imr);
|
|
I915_WRITE(GEN6_PMIER, s->pm_ier);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(s->gt_scratch); i++)
|
|
I915_WRITE(GEN7_GT_SCRATCH(i), s->gt_scratch[i]);
|
|
|
|
/* GT SA CZ domain, 0x100000-0x138124 */
|
|
I915_WRITE(TILECTL, s->tilectl);
|
|
I915_WRITE(GTFIFOCTL, s->gt_fifoctl);
|
|
/*
|
|
* Preserve the GT allow wake and GFX force clock bit, they are not
|
|
* be restored, as they are used to control the s0ix suspend/resume
|
|
* sequence by the caller.
|
|
*/
|
|
val = I915_READ(VLV_GTLC_WAKE_CTRL);
|
|
val &= VLV_GTLC_ALLOWWAKEREQ;
|
|
val |= s->gtlc_wake_ctrl & ~VLV_GTLC_ALLOWWAKEREQ;
|
|
I915_WRITE(VLV_GTLC_WAKE_CTRL, val);
|
|
|
|
val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
|
|
val &= VLV_GFX_CLK_FORCE_ON_BIT;
|
|
val |= s->gtlc_survive & ~VLV_GFX_CLK_FORCE_ON_BIT;
|
|
I915_WRITE(VLV_GTLC_SURVIVABILITY_REG, val);
|
|
|
|
I915_WRITE(VLV_PMWGICZ, s->pmwgicz);
|
|
|
|
/* Gunit-Display CZ domain, 0x182028-0x1821CF */
|
|
I915_WRITE(VLV_GU_CTL0, s->gu_ctl0);
|
|
I915_WRITE(VLV_GU_CTL1, s->gu_ctl1);
|
|
I915_WRITE(VLV_PCBR, s->pcbr);
|
|
I915_WRITE(VLV_GUNIT_CLOCK_GATE2, s->clock_gate_dis2);
|
|
}
|
|
|
|
int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool force_on)
|
|
{
|
|
u32 val;
|
|
int err;
|
|
|
|
val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
|
|
val &= ~VLV_GFX_CLK_FORCE_ON_BIT;
|
|
if (force_on)
|
|
val |= VLV_GFX_CLK_FORCE_ON_BIT;
|
|
I915_WRITE(VLV_GTLC_SURVIVABILITY_REG, val);
|
|
|
|
if (!force_on)
|
|
return 0;
|
|
|
|
err = intel_wait_for_register(dev_priv,
|
|
VLV_GTLC_SURVIVABILITY_REG,
|
|
VLV_GFX_CLK_STATUS_BIT,
|
|
VLV_GFX_CLK_STATUS_BIT,
|
|
20);
|
|
if (err)
|
|
DRM_ERROR("timeout waiting for GFX clock force-on (%08x)\n",
|
|
I915_READ(VLV_GTLC_SURVIVABILITY_REG));
|
|
|
|
return err;
|
|
}
|
|
|
|
static int vlv_allow_gt_wake(struct drm_i915_private *dev_priv, bool allow)
|
|
{
|
|
u32 val;
|
|
int err = 0;
|
|
|
|
val = I915_READ(VLV_GTLC_WAKE_CTRL);
|
|
val &= ~VLV_GTLC_ALLOWWAKEREQ;
|
|
if (allow)
|
|
val |= VLV_GTLC_ALLOWWAKEREQ;
|
|
I915_WRITE(VLV_GTLC_WAKE_CTRL, val);
|
|
POSTING_READ(VLV_GTLC_WAKE_CTRL);
|
|
|
|
err = intel_wait_for_register(dev_priv,
|
|
VLV_GTLC_PW_STATUS,
|
|
VLV_GTLC_ALLOWWAKEACK,
|
|
allow,
|
|
1);
|
|
if (err)
|
|
DRM_ERROR("timeout disabling GT waking\n");
|
|
|
|
return err;
|
|
}
|
|
|
|
static int vlv_wait_for_gt_wells(struct drm_i915_private *dev_priv,
|
|
bool wait_for_on)
|
|
{
|
|
u32 mask;
|
|
u32 val;
|
|
int err;
|
|
|
|
mask = VLV_GTLC_PW_MEDIA_STATUS_MASK | VLV_GTLC_PW_RENDER_STATUS_MASK;
|
|
val = wait_for_on ? mask : 0;
|
|
if ((I915_READ(VLV_GTLC_PW_STATUS) & mask) == val)
|
|
return 0;
|
|
|
|
DRM_DEBUG_KMS("waiting for GT wells to go %s (%08x)\n",
|
|
onoff(wait_for_on),
|
|
I915_READ(VLV_GTLC_PW_STATUS));
|
|
|
|
/*
|
|
* RC6 transitioning can be delayed up to 2 msec (see
|
|
* valleyview_enable_rps), use 3 msec for safety.
|
|
*/
|
|
err = intel_wait_for_register(dev_priv,
|
|
VLV_GTLC_PW_STATUS, mask, val,
|
|
3);
|
|
if (err)
|
|
DRM_ERROR("timeout waiting for GT wells to go %s\n",
|
|
onoff(wait_for_on));
|
|
|
|
return err;
|
|
}
|
|
|
|
static void vlv_check_no_gt_access(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (!(I915_READ(VLV_GTLC_PW_STATUS) & VLV_GTLC_ALLOWWAKEERR))
|
|
return;
|
|
|
|
DRM_DEBUG_DRIVER("GT register access while GT waking disabled\n");
|
|
I915_WRITE(VLV_GTLC_PW_STATUS, VLV_GTLC_ALLOWWAKEERR);
|
|
}
|
|
|
|
static int vlv_suspend_complete(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 mask;
|
|
int err;
|
|
|
|
/*
|
|
* Bspec defines the following GT well on flags as debug only, so
|
|
* don't treat them as hard failures.
|
|
*/
|
|
(void)vlv_wait_for_gt_wells(dev_priv, false);
|
|
|
|
mask = VLV_GTLC_RENDER_CTX_EXISTS | VLV_GTLC_MEDIA_CTX_EXISTS;
|
|
WARN_ON((I915_READ(VLV_GTLC_WAKE_CTRL) & mask) != mask);
|
|
|
|
vlv_check_no_gt_access(dev_priv);
|
|
|
|
err = vlv_force_gfx_clock(dev_priv, true);
|
|
if (err)
|
|
goto err1;
|
|
|
|
err = vlv_allow_gt_wake(dev_priv, false);
|
|
if (err)
|
|
goto err2;
|
|
|
|
if (!IS_CHERRYVIEW(dev_priv))
|
|
vlv_save_gunit_s0ix_state(dev_priv);
|
|
|
|
err = vlv_force_gfx_clock(dev_priv, false);
|
|
if (err)
|
|
goto err2;
|
|
|
|
return 0;
|
|
|
|
err2:
|
|
/* For safety always re-enable waking and disable gfx clock forcing */
|
|
vlv_allow_gt_wake(dev_priv, true);
|
|
err1:
|
|
vlv_force_gfx_clock(dev_priv, false);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int vlv_resume_prepare(struct drm_i915_private *dev_priv,
|
|
bool rpm_resume)
|
|
{
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
int err;
|
|
int ret;
|
|
|
|
/*
|
|
* If any of the steps fail just try to continue, that's the best we
|
|
* can do at this point. Return the first error code (which will also
|
|
* leave RPM permanently disabled).
|
|
*/
|
|
ret = vlv_force_gfx_clock(dev_priv, true);
|
|
|
|
if (!IS_CHERRYVIEW(dev_priv))
|
|
vlv_restore_gunit_s0ix_state(dev_priv);
|
|
|
|
err = vlv_allow_gt_wake(dev_priv, true);
|
|
if (!ret)
|
|
ret = err;
|
|
|
|
err = vlv_force_gfx_clock(dev_priv, false);
|
|
if (!ret)
|
|
ret = err;
|
|
|
|
vlv_check_no_gt_access(dev_priv);
|
|
|
|
if (rpm_resume) {
|
|
intel_init_clock_gating(dev);
|
|
i915_gem_restore_fences(dev);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int intel_runtime_suspend(struct device *device)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(device);
|
|
struct drm_device *dev = pci_get_drvdata(pdev);
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
int ret;
|
|
|
|
if (WARN_ON_ONCE(!(dev_priv->rps.enabled && intel_enable_rc6())))
|
|
return -ENODEV;
|
|
|
|
if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev)))
|
|
return -ENODEV;
|
|
|
|
DRM_DEBUG_KMS("Suspending device\n");
|
|
|
|
/*
|
|
* We could deadlock here in case another thread holding struct_mutex
|
|
* calls RPM suspend concurrently, since the RPM suspend will wait
|
|
* first for this RPM suspend to finish. In this case the concurrent
|
|
* RPM resume will be followed by its RPM suspend counterpart. Still
|
|
* for consistency return -EAGAIN, which will reschedule this suspend.
|
|
*/
|
|
if (!mutex_trylock(&dev->struct_mutex)) {
|
|
DRM_DEBUG_KMS("device lock contention, deffering suspend\n");
|
|
/*
|
|
* Bump the expiration timestamp, otherwise the suspend won't
|
|
* be rescheduled.
|
|
*/
|
|
pm_runtime_mark_last_busy(device);
|
|
|
|
return -EAGAIN;
|
|
}
|
|
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
/*
|
|
* We are safe here against re-faults, since the fault handler takes
|
|
* an RPM reference.
|
|
*/
|
|
i915_gem_release_all_mmaps(dev_priv);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
intel_guc_suspend(dev);
|
|
|
|
intel_runtime_pm_disable_interrupts(dev_priv);
|
|
|
|
ret = 0;
|
|
if (IS_BROXTON(dev_priv)) {
|
|
bxt_display_core_uninit(dev_priv);
|
|
bxt_enable_dc9(dev_priv);
|
|
} else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
|
|
hsw_enable_pc8(dev_priv);
|
|
} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
|
|
ret = vlv_suspend_complete(dev_priv);
|
|
}
|
|
|
|
if (ret) {
|
|
DRM_ERROR("Runtime suspend failed, disabling it (%d)\n", ret);
|
|
intel_runtime_pm_enable_interrupts(dev_priv);
|
|
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
intel_uncore_forcewake_reset(dev_priv, false);
|
|
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
WARN_ON_ONCE(atomic_read(&dev_priv->pm.wakeref_count));
|
|
|
|
if (intel_uncore_arm_unclaimed_mmio_detection(dev_priv))
|
|
DRM_ERROR("Unclaimed access detected prior to suspending\n");
|
|
|
|
dev_priv->pm.suspended = true;
|
|
|
|
/*
|
|
* FIXME: We really should find a document that references the arguments
|
|
* used below!
|
|
*/
|
|
if (IS_BROADWELL(dev_priv)) {
|
|
/*
|
|
* On Broadwell, if we use PCI_D1 the PCH DDI ports will stop
|
|
* being detected, and the call we do at intel_runtime_resume()
|
|
* won't be able to restore them. Since PCI_D3hot matches the
|
|
* actual specification and appears to be working, use it.
|
|
*/
|
|
intel_opregion_notify_adapter(dev_priv, PCI_D3hot);
|
|
} else {
|
|
/*
|
|
* current versions of firmware which depend on this opregion
|
|
* notification have repurposed the D1 definition to mean
|
|
* "runtime suspended" vs. what you would normally expect (D3)
|
|
* to distinguish it from notifications that might be sent via
|
|
* the suspend path.
|
|
*/
|
|
intel_opregion_notify_adapter(dev_priv, PCI_D1);
|
|
}
|
|
|
|
assert_forcewakes_inactive(dev_priv);
|
|
|
|
if (!IS_VALLEYVIEW(dev_priv) || !IS_CHERRYVIEW(dev_priv))
|
|
intel_hpd_poll_init(dev_priv);
|
|
|
|
DRM_DEBUG_KMS("Device suspended\n");
|
|
return 0;
|
|
}
|
|
|
|
static int intel_runtime_resume(struct device *device)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(device);
|
|
struct drm_device *dev = pci_get_drvdata(pdev);
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
int ret = 0;
|
|
|
|
if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev)))
|
|
return -ENODEV;
|
|
|
|
DRM_DEBUG_KMS("Resuming device\n");
|
|
|
|
WARN_ON_ONCE(atomic_read(&dev_priv->pm.wakeref_count));
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
intel_opregion_notify_adapter(dev_priv, PCI_D0);
|
|
dev_priv->pm.suspended = false;
|
|
if (intel_uncore_unclaimed_mmio(dev_priv))
|
|
DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n");
|
|
|
|
intel_guc_resume(dev);
|
|
|
|
if (IS_GEN6(dev_priv))
|
|
intel_init_pch_refclk(dev);
|
|
|
|
if (IS_BROXTON(dev)) {
|
|
bxt_disable_dc9(dev_priv);
|
|
bxt_display_core_init(dev_priv, true);
|
|
if (dev_priv->csr.dmc_payload &&
|
|
(dev_priv->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC5))
|
|
gen9_enable_dc5(dev_priv);
|
|
} else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
|
|
hsw_disable_pc8(dev_priv);
|
|
} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
|
|
ret = vlv_resume_prepare(dev_priv, true);
|
|
}
|
|
|
|
/*
|
|
* No point of rolling back things in case of an error, as the best
|
|
* we can do is to hope that things will still work (and disable RPM).
|
|
*/
|
|
i915_gem_init_swizzling(dev);
|
|
|
|
intel_runtime_pm_enable_interrupts(dev_priv);
|
|
|
|
/*
|
|
* On VLV/CHV display interrupts are part of the display
|
|
* power well, so hpd is reinitialized from there. For
|
|
* everyone else do it here.
|
|
*/
|
|
if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
|
|
intel_hpd_init(dev_priv);
|
|
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
if (ret)
|
|
DRM_ERROR("Runtime resume failed, disabling it (%d)\n", ret);
|
|
else
|
|
DRM_DEBUG_KMS("Device resumed\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
const struct dev_pm_ops i915_pm_ops = {
|
|
/*
|
|
* S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND,
|
|
* PMSG_RESUME]
|
|
*/
|
|
.suspend = i915_pm_suspend,
|
|
.suspend_late = i915_pm_suspend_late,
|
|
.resume_early = i915_pm_resume_early,
|
|
.resume = i915_pm_resume,
|
|
|
|
/*
|
|
* S4 event handlers
|
|
* @freeze, @freeze_late : called (1) before creating the
|
|
* hibernation image [PMSG_FREEZE] and
|
|
* (2) after rebooting, before restoring
|
|
* the image [PMSG_QUIESCE]
|
|
* @thaw, @thaw_early : called (1) after creating the hibernation
|
|
* image, before writing it [PMSG_THAW]
|
|
* and (2) after failing to create or
|
|
* restore the image [PMSG_RECOVER]
|
|
* @poweroff, @poweroff_late: called after writing the hibernation
|
|
* image, before rebooting [PMSG_HIBERNATE]
|
|
* @restore, @restore_early : called after rebooting and restoring the
|
|
* hibernation image [PMSG_RESTORE]
|
|
*/
|
|
.freeze = i915_pm_freeze,
|
|
.freeze_late = i915_pm_freeze_late,
|
|
.thaw_early = i915_pm_thaw_early,
|
|
.thaw = i915_pm_thaw,
|
|
.poweroff = i915_pm_suspend,
|
|
.poweroff_late = i915_pm_poweroff_late,
|
|
.restore_early = i915_pm_restore_early,
|
|
.restore = i915_pm_restore,
|
|
|
|
/* S0ix (via runtime suspend) event handlers */
|
|
.runtime_suspend = intel_runtime_suspend,
|
|
.runtime_resume = intel_runtime_resume,
|
|
};
|
|
|
|
static const struct vm_operations_struct i915_gem_vm_ops = {
|
|
.fault = i915_gem_fault,
|
|
.open = drm_gem_vm_open,
|
|
.close = drm_gem_vm_close,
|
|
};
|
|
|
|
static const struct file_operations i915_driver_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = drm_open,
|
|
.release = drm_release,
|
|
.unlocked_ioctl = drm_ioctl,
|
|
.mmap = drm_gem_mmap,
|
|
.poll = drm_poll,
|
|
.read = drm_read,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = i915_compat_ioctl,
|
|
#endif
|
|
.llseek = noop_llseek,
|
|
};
|
|
|
|
static int
|
|
i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static const struct drm_ioctl_desc i915_ioctls[] = {
|
|
DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH|DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, 0),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW),
|
|
};
|
|
|
|
static struct drm_driver driver = {
|
|
/* Don't use MTRRs here; the Xserver or userspace app should
|
|
* deal with them for Intel hardware.
|
|
*/
|
|
.driver_features =
|
|
DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME |
|
|
DRIVER_RENDER | DRIVER_MODESET,
|
|
.open = i915_driver_open,
|
|
.lastclose = i915_driver_lastclose,
|
|
.preclose = i915_driver_preclose,
|
|
.postclose = i915_driver_postclose,
|
|
.set_busid = drm_pci_set_busid,
|
|
|
|
.gem_free_object = i915_gem_free_object,
|
|
.gem_vm_ops = &i915_gem_vm_ops,
|
|
|
|
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
|
|
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
|
|
.gem_prime_export = i915_gem_prime_export,
|
|
.gem_prime_import = i915_gem_prime_import,
|
|
|
|
.dumb_create = i915_gem_dumb_create,
|
|
.dumb_map_offset = i915_gem_mmap_gtt,
|
|
.dumb_destroy = drm_gem_dumb_destroy,
|
|
.ioctls = i915_ioctls,
|
|
.num_ioctls = ARRAY_SIZE(i915_ioctls),
|
|
.fops = &i915_driver_fops,
|
|
.name = DRIVER_NAME,
|
|
.desc = DRIVER_DESC,
|
|
.date = DRIVER_DATE,
|
|
.major = DRIVER_MAJOR,
|
|
.minor = DRIVER_MINOR,
|
|
.patchlevel = DRIVER_PATCHLEVEL,
|
|
};
|