Merge tag 'drm-intel-next-2022-02-08' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

Cross-subsystem Changes:
------------------------

dma-buf:
- dma-buf-map: Rename to iosys-map (Lucas)

Core Changes:
-------------

drm:
- Always include the debugfs_entry in drm_crtc (Ville)
- Add orientation quirk for GPD Win Max (Anisse)

Driver Changes:
---------------

gvt:
- Constify some pointers. (Rikard Falkeborn)
- Use list_entry to access list members. (Guenter Roeck)
- Fix cmd parser error for Passmark9. (Zhenyu Wang)

i915:
- Various clean-ups including headers and removing unused and unnecessary stuff\
 (Jani, Hans, Andy, Ville)
- Cleaning up on our registers definitions i915_reg.h (Matt)
- More multi-FBC refactoring (Ville)
- Baytrail backlight fix (Hans)
- DG1 OPROM read through SPI controller (Clint)
- ADL-N platform enabling (Tejas)
- Fix slab-out-of-bounds access (Jani)
- Add opregion mailbox #5 support for possible EDID override (Anisse)
- Fix possible NULL dereferences (Harish)
- Updates and fixes around display voltage swing values (Clint, Jose)
- Fix RPM wekeref on PXP code (Juston)
- Many register definitions clean-up, including planes registers (Ville)
- More conversion towards display version over the old gen (Madhumitha, Ville)
- DP MST ESI handling improvements (Jani)
- drm device based logging conversions (Jani)
- Prevent divide by zero (Dan)
- Introduce ilk_pch_pre_enable for complete modeset abstraction (Ville)
- Async flip optimization for DG2 (Stanislav)
- Multiple DSC and bigjoiner fixes and improvements (Ville)
- Fix ADL-P TypeC Phy ready status readout (Imre)
- Fix up DP DFP 4:2:0 handling more display related fixes (Ville)
- Display M/N cleanup (Ville)
- Switch to use VGA definitions from video/vga.h (Jani)
- Fixes and improvements to abstract CPU architecture (Lucas)
- Disable unsused power wells left enabled by BIOS (Imre)
- Allow !join_mbus cases for adlp+ dbuf configuration (Ville)
- Populate pipe dbuf slices more accurately during readout (Ville)
- Workaround broken BIOS DBUF configuration on TGL/RKL (Ville)
- Fix trailing semicolon (Lucas)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YgKFLmCgpv4vQEa1@intel.com

1 files changed, 94 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_ioctl.c b/drivers/gpu/drm/i915/i915_ioctl.c
new file mode 100644
index 000000000000..06a10ccea80b
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_ioctl.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include "gt/intel_engine_regs.h"
+
+#include "i915_drv.h"
+#include "i915_gem.h"
+#include "i915_ioctl.h"
+#include "i915_reg.h"
+#include "intel_runtime_pm.h"
+#include "intel_uncore.h"
+
+/*
+ * This file is for small ioctl functions that are out of place everywhere else,
+ * and not big enough to warrant a file of their own.
+ *
+ * This is not the dumping ground for random ioctls.
+ */
+
+struct reg_whitelist {
+	i915_reg_t offset_ldw;
+	i915_reg_t offset_udw;
+	u8 min_graphics_ver;
+	u8 max_graphics_ver;
+	u8 size;
+};
+
+static const struct reg_whitelist reg_read_whitelist[] = {
+	{
+		.offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
+		.offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
+		.min_graphics_ver = 4,
+		.max_graphics_ver = 12,
+		.size = 8
+	}
+};
+
+int i915_reg_read_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *unused)
+{
+	struct drm_i915_private *i915 = to_i915(dev);
+	struct intel_uncore *uncore = &i915->uncore;
+	struct drm_i915_reg_read *reg = data;
+	struct reg_whitelist const *entry;
+	intel_wakeref_t wakeref;
+	unsigned int flags;
+	int remain;
+	int ret = 0;
+
+	entry = reg_read_whitelist;
+	remain = ARRAY_SIZE(reg_read_whitelist);
+	while (remain) {
+		u32 entry_offset = i915_mmio_reg_offset(entry->offset_ldw);
+
+		GEM_BUG_ON(!is_power_of_2(entry->size));
+		GEM_BUG_ON(entry->size > 8);
+		GEM_BUG_ON(entry_offset & (entry->size - 1));
+
+		if (IS_GRAPHICS_VER(i915, entry->min_graphics_ver, entry->max_graphics_ver) &&
+		    entry_offset == (reg->offset & -entry->size))
+			break;
+		entry++;
+		remain--;
+	}
+
+	if (!remain)
+		return -EINVAL;
+
+	flags = reg->offset & (entry->size - 1);
+
+	with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+		if (entry->size == 8 && flags == I915_REG_READ_8B_WA)
+			reg->val = intel_uncore_read64_2x32(uncore,
+							    entry->offset_ldw,
+							    entry->offset_udw);
+		else if (entry->size == 8 && flags == 0)
+			reg->val = intel_uncore_read64(uncore,
+						       entry->offset_ldw);
+		else if (entry->size == 4 && flags == 0)
+			reg->val = intel_uncore_read(uncore, entry->offset_ldw);
+		else if (entry->size == 2 && flags == 0)
+			reg->val = intel_uncore_read16(uncore,
+						       entry->offset_ldw);
+		else if (entry->size == 1 && flags == 0)
+			reg->val = intel_uncore_read8(uncore,
+						      entry->offset_ldw);
+		else
+			ret = -EINVAL;
+	}
+
+	return ret;
+}