Merge tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "This contains two major new drivers:

   - imagination is a first driver for Imagination Technologies devices,
     it only covers very specific devices, but there is hope to grow it

   - xe is a reboot of the i915 GPU (shares display) side using a more
     upstream focused development model, and trying to maximise code
     sharing. It's not enabled for any hw by default, and will hopefully
     get switched on for Intel's Lunarlake.

  This also drops a bunch of the old UMS ioctls. It's been dead long
  enough.

  amdgpu has a bunch of new color management code that is being used in
  the Steam Deck.

  amdgpu also has a new ACPI WBRF interaction to help avoid radio
  interference.

  Otherwise it's the usual lots of changes in lots of places.

  Detailed summary:

  new drivers:
   - imagination - new driver for Imagination Technologies GPU
   - xe - new driver for Intel GPUs using core drm concepts

  core:
   - add CLOSE_FB ioctl
   - remove old UMS ioctls
   - increase max objects to accomodate AMD color mgmt

  encoder:
   - create per-encoder debugfs directory

  edid:
   - split out drm_eld
   - SAD helpers
   - drop edid_firmware module parameter

  format-helper:
   - cache format conversion buffers

  sched:
   - move from kthread to workqueue
   - rename some internals
   - implement dynamic job-flow control

  gpuvm:
   - provide more features to handle GEM objects

  client:
   - don't acquire module reference

  displayport:
   - add mst path property documentation

  fdinfo:
   - alignment fix

  dma-buf:
   - add fence timestamp helper
   - add fence deadline support

  bridge:
   - transparent aux-bridge for DP/USB-C
   - lt8912b: add suspend/resume support and power regulator support

  panel:
   - edp: AUO B116XTN02, BOE NT116WHM-N21,836X2, NV116WHM-N49
   - chromebook panel support
   - elida-kd35t133: rework pm
   - powkiddy RK2023 panel
   - himax-hx8394: drop prepare/unprepare and shutdown logic
   - BOE BP101WX1-100, Powkiddy X55, Ampire AM8001280G
   - Evervision VGG644804, SDC ATNA45AF01
   - nv3052c: register docs, init sequence fixes, fascontek FS035VG158
   - st7701: Anbernic RG-ARC support
   - r63353 panel controller
   - Ilitek ILI9805 panel controller
   - AUO G156HAN04.0

  simplefb:
   - support memory regions
   - support power domains

  amdgpu:
   - add new 64-bit sequence number infrastructure
   - add AMD specific color management
   - ACPI WBRF support for RF interference handling
   - GPUVM updates
   - RAS updates
   - DCN 3.5 updates
   - Rework PCIe link speed handling
   - Document GPU reset types
   - DMUB fixes
   - eDP fixes
   - NBIO 7.9/7.11 updates
   - SubVP updates
   - XGMI PCIe state dumping for aqua vanjaram
   - GFX11 golden register updates
   - enable tunnelling on high pri compute

  amdkfd:
   - Migrate TLB flushing logic to amdgpu
   - Trap handler fixes
   - Fix restore workers handling on suspend/resume
   - Fix possible memory leak in pqm_uninit()
   - support import/export of dma-bufs using GEM handles

  radeon:
   - fix possible overflows in command buffer checking
   - check for errors in ring_lock

  i915:
   - reorg display code for reuse in xe driver
   - fdinfo memory stats printing
   - DP MST bandwidth mgmt improvements
   - DP panel replay enabling
   - MTL C20 phy state verification
   - MTL DP DSC fractional bpp support
   - Audio fastset support
   - use dma_fence interfaces instead of i915_sw_fence
   - Separate gem and display code
   - AUX register macro refactoring
   - Separate display module/device parameters
   - Move display capabilities debugfs under display
   - Makefile cleanups
   - Register cleanups
   - Move display lock inits under display/
   - VLV/CHV DPIO PHY register and interface refactoring
   - DSI VBT sequence refactoring
   - C10/C20 PHY PLL hardware readout
   - DPLL code cleanups
   - Cleanup PXP plane protection checks
   - Improve display debug msgs
   - PSR selective fetch fixes/improvements
   - DP MST fixes
   - Xe2LPD FBC restrictions removed
   - DGFX uses direct VBT pin mapping
   - more MTL WAs
   - fix MTL eDP bug
   - eliminate use of kmap_atomic

  habanalabs:
   - sysfs entry to identify a device minor id with debugfs path
   - sysfs entry to expose device module id
   - add signed device info retrieval through INFO ioctl
   - add Gaudi2C device support
   - pcie reset prepare/done hooks

  msm:
   - Add support for SDM670, SM8650
   - Handle the CFG interconnect to fix the obscure hangs / timeouts
   - Kconfig fix for QMP dependency
   - use managed allocators
   - DPU: SDM670, SM8650 support
   - DPU: Enable SmartDMA on SM8350 and SM8450
   - DP: enable runtime PM support
   - GPU: add metadata UAPI
   - GPU: move devcoredumps to GPU device
   - GPU: convert to drm_exec

  ivpu:
   - update FW API
   - new debugfs file
   - a new NOP job submission test mode
   - improve suspend/resume
   - PM improvements
   - MMU PT optimizations
   - firmware profile frequency support
   - support for uncached buffers
   - switch to gem shmem helpers
   - replace kthread with threaded irqs

  rockchip:
   - rk3066_hdmi: convert to atomic
   - vop2: support nv20 and nv30
   - rk3588 support

  mediatek:
   - use devm_platform_ioremap_resource
   - stop using iommu_present
   - MT8188 VDOSYS1 display support

  panfrost:
   - PM improvements
   - improve interrupt handling as poweroff

  qaic:
   - allow to run with single MSI
   - support host/device time sync
   - switch to persistent DRM devices

  exynos:
   - fix potential error pointer dereference
   - fix wrong error checking
   - add missing call to drm_atomic_helper_shutdown

  omapdrm:
   - dma-fence lockdep annotation fix

  tidss:
   - dma-fence lockdep annotation fix
   - support for AM62A7

  v3d:
   - BCM2712 - rpi5 support
   - fdinfo + gputop support
   - uapi for CPU job handling

  virtio-gpu:
   - add context debug name"

* tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm: (2340 commits)
  drm/amd/display: Allow z8/z10 from driver
  drm/amd/display: fix bandwidth validation failure on DCN 2.1
  drm/amdgpu: apply the RV2 system aperture fix to RN/CZN as well
  drm/amd/display: Move fixpt_from_s3132 to amdgpu_dm
  drm/amd/display: Fix recent checkpatch errors in amdgpu_dm
  Revert "drm/amdkfd: Relocate TBA/TMA to opposite side of VM hole"
  drm/amd/display: avoid stringop-overflow warnings for dp_decide_lane_settings()
  drm/amd/display: Fix power_helpers.c codestyle
  drm/amd/display: Fix hdcp_log.h codestyle
  drm/amd/display: Fix hdcp2_execution.c codestyle
  drm/amd/display: Fix hdcp_psp.h codestyle
  drm/amd/display: Fix freesync.c codestyle
  drm/amd/display: Fix hdcp_psp.c codestyle
  drm/amd/display: Fix hdcp1_execution.c codestyle
  drm/amd/pm/smu7: fix a memleak in smu7_hwmgr_backend_init
  drm/amdkfd: Fix iterator used outside loop in 'kfd_add_peer_prop()'
  drm/amdgpu: Drop 'fence' check in 'to_amdgpu_amdkfd_fence()'
  drm/amdkfd: Confirm list is non-empty before utilizing list_first_entry in kfd_topology.c
  drm/amdgpu: Fix '*fw' from request_firmware() not released in 'amdgpu_ucode_request()'
  drm/amdgpu: Fix variable 'mca_funcs' dereferenced before NULL check in 'amdgpu_mca_smu_get_mca_entry()'
  ...

1 files changed, 405 insertions, 0 deletions

diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c
new file mode 100644
index 000000000000..b429c2876a76
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_pm.c
@@ -0,0 +1,405 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include "xe_pm.h"
+
+#include <linux/pm_runtime.h>
+
+#include <drm/drm_managed.h>
+#include <drm/ttm/ttm_placement.h>
+
+#include "xe_bo.h"
+#include "xe_bo_evict.h"
+#include "xe_device.h"
+#include "xe_device_sysfs.h"
+#include "xe_display.h"
+#include "xe_ggtt.h"
+#include "xe_gt.h"
+#include "xe_guc.h"
+#include "xe_irq.h"
+#include "xe_pcode.h"
+#include "xe_wa.h"
+
+/**
+ * DOC: Xe Power Management
+ *
+ * Xe PM shall be guided by the simplicity.
+ * Use the simplest hook options whenever possible.
+ * Let's not reinvent the runtime_pm references and hooks.
+ * Shall have a clear separation of display and gt underneath this component.
+ *
+ * What's next:
+ *
+ * For now s2idle and s3 are only working in integrated devices. The next step
+ * is to iterate through all VRAM's BO backing them up into the system memory
+ * before allowing the system suspend.
+ *
+ * Also runtime_pm needs to be here from the beginning.
+ *
+ * RC6/RPS are also critical PM features. Let's start with GuCRC and GuC SLPC
+ * and no wait boost. Frequency optimizations should come on a next stage.
+ */
+
+/**
+ * xe_pm_suspend - Helper for System suspend, i.e. S0->S3 / S0->S2idle
+ * @xe: xe device instance
+ *
+ * Return: 0 on success
+ */
+int xe_pm_suspend(struct xe_device *xe)
+{
+	struct xe_gt *gt;
+	u8 id;
+	int err;
+
+	for_each_gt(gt, xe, id)
+		xe_gt_suspend_prepare(gt);
+
+	/* FIXME: Super racey... */
+	err = xe_bo_evict_all(xe);
+	if (err)
+		return err;
+
+	xe_display_pm_suspend(xe);
+
+	for_each_gt(gt, xe, id) {
+		err = xe_gt_suspend(gt);
+		if (err) {
+			xe_display_pm_resume(xe);
+			return err;
+		}
+	}
+
+	xe_irq_suspend(xe);
+
+	xe_display_pm_suspend_late(xe);
+
+	return 0;
+}
+
+/**
+ * xe_pm_resume - Helper for System resume S3->S0 / S2idle->S0
+ * @xe: xe device instance
+ *
+ * Return: 0 on success
+ */
+int xe_pm_resume(struct xe_device *xe)
+{
+	struct xe_tile *tile;
+	struct xe_gt *gt;
+	u8 id;
+	int err;
+
+	for_each_tile(tile, xe, id)
+		xe_wa_apply_tile_workarounds(tile);
+
+	for_each_gt(gt, xe, id) {
+		err = xe_pcode_init(gt);
+		if (err)
+			return err;
+	}
+
+	xe_display_pm_resume_early(xe);
+
+	/*
+	 * This only restores pinned memory which is the memory required for the
+	 * GT(s) to resume.
+	 */
+	err = xe_bo_restore_kernel(xe);
+	if (err)
+		return err;
+
+	xe_irq_resume(xe);
+
+	xe_display_pm_resume(xe);
+
+	for_each_gt(gt, xe, id)
+		xe_gt_resume(gt);
+
+	err = xe_bo_restore_user(xe);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static bool xe_pm_pci_d3cold_capable(struct pci_dev *pdev)
+{
+	struct pci_dev *root_pdev;
+
+	root_pdev = pcie_find_root_port(pdev);
+	if (!root_pdev)
+		return false;
+
+	/* D3Cold requires PME capability and _PR3 power resource */
+	if (!pci_pme_capable(root_pdev, PCI_D3cold) || !pci_pr3_present(root_pdev))
+		return false;
+
+	return true;
+}
+
+static void xe_pm_runtime_init(struct xe_device *xe)
+{
+	struct device *dev = xe->drm.dev;
+
+	/*
+	 * Disable the system suspend direct complete optimization.
+	 * We need to ensure that the regular device suspend/resume functions
+	 * are called since our runtime_pm cannot guarantee local memory
+	 * eviction for d3cold.
+	 * TODO: Check HDA audio dependencies claimed by i915, and then enforce
+	 *       this option to integrated graphics as well.
+	 */
+	if (IS_DGFX(xe))
+		dev_pm_set_driver_flags(dev, DPM_FLAG_NO_DIRECT_COMPLETE);
+
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_set_autosuspend_delay(dev, 1000);
+	pm_runtime_set_active(dev);
+	pm_runtime_allow(dev);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put(dev);
+}
+
+void xe_pm_init(struct xe_device *xe)
+{
+	struct pci_dev *pdev = to_pci_dev(xe->drm.dev);
+
+	/* For now suspend/resume is only allowed with GuC */
+	if (!xe_device_uc_enabled(xe))
+		return;
+
+	drmm_mutex_init(&xe->drm, &xe->d3cold.lock);
+
+	xe->d3cold.capable = xe_pm_pci_d3cold_capable(pdev);
+
+	if (xe->d3cold.capable) {
+		xe_device_sysfs_init(xe);
+		xe_pm_set_vram_threshold(xe, DEFAULT_VRAM_THRESHOLD);
+	}
+
+	xe_pm_runtime_init(xe);
+}
+
+void xe_pm_runtime_fini(struct xe_device *xe)
+{
+	struct device *dev = xe->drm.dev;
+
+	pm_runtime_get_sync(dev);
+	pm_runtime_forbid(dev);
+}
+
+static void xe_pm_write_callback_task(struct xe_device *xe,
+				      struct task_struct *task)
+{
+	WRITE_ONCE(xe->pm_callback_task, task);
+
+	/*
+	 * Just in case it's somehow possible for our writes to be reordered to
+	 * the extent that something else re-uses the task written in
+	 * pm_callback_task. For example after returning from the callback, but
+	 * before the reordered write that resets pm_callback_task back to NULL.
+	 */
+	smp_mb(); /* pairs with xe_pm_read_callback_task */
+}
+
+struct task_struct *xe_pm_read_callback_task(struct xe_device *xe)
+{
+	smp_mb(); /* pairs with xe_pm_write_callback_task */
+
+	return READ_ONCE(xe->pm_callback_task);
+}
+
+int xe_pm_runtime_suspend(struct xe_device *xe)
+{
+	struct xe_gt *gt;
+	u8 id;
+	int err = 0;
+
+	if (xe->d3cold.allowed && xe_device_mem_access_ongoing(xe))
+		return -EBUSY;
+
+	/* Disable access_ongoing asserts and prevent recursive pm calls */
+	xe_pm_write_callback_task(xe, current);
+
+	/*
+	 * The actual xe_device_mem_access_put() is always async underneath, so
+	 * exactly where that is called should makes no difference to us. However
+	 * we still need to be very careful with the locks that this callback
+	 * acquires and the locks that are acquired and held by any callers of
+	 * xe_device_mem_access_get(). We already have the matching annotation
+	 * on that side, but we also need it here. For example lockdep should be
+	 * able to tell us if the following scenario is in theory possible:
+	 *
+	 * CPU0                          | CPU1 (kworker)
+	 * lock(A)                       |
+	 *                               | xe_pm_runtime_suspend()
+	 *                               |      lock(A)
+	 * xe_device_mem_access_get()    |
+	 *
+	 * This will clearly deadlock since rpm core needs to wait for
+	 * xe_pm_runtime_suspend() to complete, but here we are holding lock(A)
+	 * on CPU0 which prevents CPU1 making forward progress.  With the
+	 * annotation here and in xe_device_mem_access_get() lockdep will see
+	 * the potential lock inversion and give us a nice splat.
+	 */
+	lock_map_acquire(&xe_device_mem_access_lockdep_map);
+
+	if (xe->d3cold.allowed) {
+		err = xe_bo_evict_all(xe);
+		if (err)
+			goto out;
+	}
+
+	for_each_gt(gt, xe, id) {
+		err = xe_gt_suspend(gt);
+		if (err)
+			goto out;
+	}
+
+	xe_irq_suspend(xe);
+out:
+	lock_map_release(&xe_device_mem_access_lockdep_map);
+	xe_pm_write_callback_task(xe, NULL);
+	return err;
+}
+
+int xe_pm_runtime_resume(struct xe_device *xe)
+{
+	struct xe_gt *gt;
+	u8 id;
+	int err = 0;
+
+	/* Disable access_ongoing asserts and prevent recursive pm calls */
+	xe_pm_write_callback_task(xe, current);
+
+	lock_map_acquire(&xe_device_mem_access_lockdep_map);
+
+	/*
+	 * It can be possible that xe has allowed d3cold but other pcie devices
+	 * in gfx card soc would have blocked d3cold, therefore card has not
+	 * really lost power. Detecting primary Gt power is sufficient.
+	 */
+	gt = xe_device_get_gt(xe, 0);
+	xe->d3cold.power_lost = xe_guc_in_reset(&gt->uc.guc);
+
+	if (xe->d3cold.allowed && xe->d3cold.power_lost) {
+		for_each_gt(gt, xe, id) {
+			err = xe_pcode_init(gt);
+			if (err)
+				goto out;
+		}
+
+		/*
+		 * This only restores pinned memory which is the memory
+		 * required for the GT(s) to resume.
+		 */
+		err = xe_bo_restore_kernel(xe);
+		if (err)
+			goto out;
+	}
+
+	xe_irq_resume(xe);
+
+	for_each_gt(gt, xe, id)
+		xe_gt_resume(gt);
+
+	if (xe->d3cold.allowed && xe->d3cold.power_lost) {
+		err = xe_bo_restore_user(xe);
+		if (err)
+			goto out;
+	}
+out:
+	lock_map_release(&xe_device_mem_access_lockdep_map);
+	xe_pm_write_callback_task(xe, NULL);
+	return err;
+}
+
+int xe_pm_runtime_get(struct xe_device *xe)
+{
+	return pm_runtime_get_sync(xe->drm.dev);
+}
+
+int xe_pm_runtime_put(struct xe_device *xe)
+{
+	pm_runtime_mark_last_busy(xe->drm.dev);
+	return pm_runtime_put(xe->drm.dev);
+}
+
+int xe_pm_runtime_get_if_active(struct xe_device *xe)
+{
+	return pm_runtime_get_if_active(xe->drm.dev, true);
+}
+
+void xe_pm_assert_unbounded_bridge(struct xe_device *xe)
+{
+	struct pci_dev *pdev = to_pci_dev(xe->drm.dev);
+	struct pci_dev *bridge = pci_upstream_bridge(pdev);
+
+	if (!bridge)
+		return;
+
+	if (!bridge->driver) {
+		drm_warn(&xe->drm, "unbounded parent pci bridge, device won't support any PM support.\n");
+		device_set_pm_not_required(&pdev->dev);
+	}
+}
+
+int xe_pm_set_vram_threshold(struct xe_device *xe, u32 threshold)
+{
+	struct ttm_resource_manager *man;
+	u32 vram_total_mb = 0;
+	int i;
+
+	for (i = XE_PL_VRAM0; i <= XE_PL_VRAM1; ++i) {
+		man = ttm_manager_type(&xe->ttm, i);
+		if (man)
+			vram_total_mb += DIV_ROUND_UP_ULL(man->size, 1024 * 1024);
+	}
+
+	drm_dbg(&xe->drm, "Total vram %u mb\n", vram_total_mb);
+
+	if (threshold > vram_total_mb)
+		return -EINVAL;
+
+	mutex_lock(&xe->d3cold.lock);
+	xe->d3cold.vram_threshold = threshold;
+	mutex_unlock(&xe->d3cold.lock);
+
+	return 0;
+}
+
+void xe_pm_d3cold_allowed_toggle(struct xe_device *xe)
+{
+	struct ttm_resource_manager *man;
+	u32 total_vram_used_mb = 0;
+	u64 vram_used;
+	int i;
+
+	if (!xe->d3cold.capable) {
+		xe->d3cold.allowed = false;
+		return;
+	}
+
+	for (i = XE_PL_VRAM0; i <= XE_PL_VRAM1; ++i) {
+		man = ttm_manager_type(&xe->ttm, i);
+		if (man) {
+			vram_used = ttm_resource_manager_usage(man);
+			total_vram_used_mb += DIV_ROUND_UP_ULL(vram_used, 1024 * 1024);
+		}
+	}
+
+	mutex_lock(&xe->d3cold.lock);
+
+	if (total_vram_used_mb < xe->d3cold.vram_threshold)
+		xe->d3cold.allowed = true;
+	else
+		xe->d3cold.allowed = false;
+
+	mutex_unlock(&xe->d3cold.lock);
+
+	drm_dbg(&xe->drm,
+		"d3cold: allowed=%s\n", str_yes_no(xe->d3cold.allowed));
+}