Merge tag 'drm-misc-next-2018-02-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 4.17:

UAPI Changes:
- drm/vc4: Expose performance counters to userspace (Boris)

Cross-subsystem Changes:
- MAINTAINERS: Linus to maintain panel-arm-versatile in -misc (Linus)

Core Changes:
- Only use swiotlb when necessary (Chunming)

Driver Changes:
- drm/panel: Add support for ARM Versatile panels (Linus)
- pl111: Improvements around versatile panel support (Linus)

----------------------------------------
Tagged on 2018-02-06:
drm-misc-next for 4.17:

UAPI Changes:
- Validate mode flags + type (Ville)
- Deprecate unused mode flags PIXMUX, BCAST (Ville)
- Deprecate unused mode types BUILTIN, CRTC_C, CLOCK_C, DEFAULT (Ville)

Cross-subsystem Changes:
- MAINTAINERS: s/Daniel/Maarten/ for drm-misc (Daniel)

Core Changes:
- gem: Export gem functions for drivers to use (Samuel)
- bridge: Introduce bridge timings in drm_bridge (Linus)
- dma-buf: Allow exclusive fence to be bundled in fence array when
	   calling reservation_object_get_fences_rcu (Christian)
- dp: Add training pattern 4 and HBR3 support to dp helpers (Manasi)
- fourcc: Add alpha bit to formats to avoid driver format LUTs (Maxime)
- mode: Various cleanups + add new device-wide .mode_valid hook (Ville)
- atomic: Fix state leak when non-blocking commits fail (Leo)
	  NOTE: IIRC, this was cross-picked to -fixes so it might fall out
- crc: Allow polling on the data fd (Maarten)

Driver Changes:
- bridge/vga-dac: Add THS8134* support (Linus)
- tinydrm: Various MIPI DBI improvements/cleanups (Noralf)
- bridge/dw-mipi-dsi: Cleanups + use create_packet helper (Brian)
- drm/sun4i: Add Display Engine frontend support (Maxime)
- drm/sun4i: Add zpos support + increase num planes from 2 to 4 (Maxime)
- various: Use drm_mode_get_hv_timing() to fill plane clip rectangle (Ville)
- stm: Add 8-bit clut support, add dsi phy v1.31 support, +fixes (Phillipe)

Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Chunming Zhou <david1.zhou@amd.com>
Cc: Samuel Li <Samuel.Li@amd.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: Brian Norris <briannorris@chromium.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

* tag 'drm-misc-next-2018-02-13' of git://anongit.freedesktop.org/drm/drm-misc: (115 commits)
  drm/radeon: only enable swiotlb path when need v2
  drm/amdgpu: only enable swiotlb alloc when need v2
  drm: add func to get max iomem address v2
  drm/vc4: Expose performance counters to userspace
  drm: Print the pid when debug logging an ioctl error.
  drm/stm: ltdc: remove non-alpha color formats on layer 2 for older hw
  drm/stm: ltdc: add non-alpha color formats
  drm/bridge/synopsys: dsi: Add 1.31 version support
  drm/bridge/synopsys: dsi: Add read feature
  drm/pl111: Support multiple endpoints on the CLCD
  drm/pl111: Support variants with broken VBLANK
  drm/pl111: Support variants with broken clock divider
  drm/pl111: Handle the Versatile RGB/BGR565 mode
  drm/pl111: Properly detect the ARM PL110 variants
  drm/panel: Add support for ARM Versatile panels
  drm/panel: Device tree bindings for ARM Versatile panels
  drm/bridge: Rename argument from crtc to bridge
  drm/crc: Add support for polling on the data fd.
  drm/sun4i: Use drm_mode_get_hv_timing() to populate plane clip rectangle
  drm/rcar-du: Use drm_mode_get_hv_timing() to populate plane clip rectangle
  ...

1 files changed, 188 insertions, 0 deletions

diff --git a/drivers/gpu/drm/vc4/vc4_perfmon.c b/drivers/gpu/drm/vc4/vc4_perfmon.c
new file mode 100644
index 000000000000..437e7a27f21d
--- /dev/null
+++ b/drivers/gpu/drm/vc4/vc4_perfmon.c
@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 Broadcom
+ */
+
+/**
+ * DOC: VC4 V3D performance monitor module
+ *
+ * The V3D block provides 16 hardware counters which can count various events.
+ */
+
+#include "vc4_drv.h"
+#include "vc4_regs.h"
+
+#define VC4_PERFMONID_MIN	1
+#define VC4_PERFMONID_MAX	U32_MAX
+
+void vc4_perfmon_get(struct vc4_perfmon *perfmon)
+{
+	if (perfmon)
+		refcount_inc(&perfmon->refcnt);
+}
+
+void vc4_perfmon_put(struct vc4_perfmon *perfmon)
+{
+	if (perfmon && refcount_dec_and_test(&perfmon->refcnt))
+		kfree(perfmon);
+}
+
+void vc4_perfmon_start(struct vc4_dev *vc4, struct vc4_perfmon *perfmon)
+{
+	unsigned int i;
+	u32 mask;
+
+	if (WARN_ON_ONCE(!perfmon || vc4->active_perfmon))
+		return;
+
+	for (i = 0; i < perfmon->ncounters; i++)
+		V3D_WRITE(V3D_PCTRS(i), perfmon->events[i]);
+
+	mask = GENMASK(perfmon->ncounters - 1, 0);
+	V3D_WRITE(V3D_PCTRC, mask);
+	V3D_WRITE(V3D_PCTRE, V3D_PCTRE_EN | mask);
+	vc4->active_perfmon = perfmon;
+}
+
+void vc4_perfmon_stop(struct vc4_dev *vc4, struct vc4_perfmon *perfmon,
+		      bool capture)
+{
+	unsigned int i;
+
+	if (WARN_ON_ONCE(!vc4->active_perfmon ||
+			 perfmon != vc4->active_perfmon))
+		return;
+
+	if (capture) {
+		for (i = 0; i < perfmon->ncounters; i++)
+			perfmon->counters[i] += V3D_READ(V3D_PCTR(i));
+	}
+
+	V3D_WRITE(V3D_PCTRE, 0);
+	vc4->active_perfmon = NULL;
+}
+
+struct vc4_perfmon *vc4_perfmon_find(struct vc4_file *vc4file, int id)
+{
+	struct vc4_perfmon *perfmon;
+
+	mutex_lock(&vc4file->perfmon.lock);
+	perfmon = idr_find(&vc4file->perfmon.idr, id);
+	vc4_perfmon_get(perfmon);
+	mutex_unlock(&vc4file->perfmon.lock);
+
+	return perfmon;
+}
+
+void vc4_perfmon_open_file(struct vc4_file *vc4file)
+{
+	mutex_init(&vc4file->perfmon.lock);
+	idr_init(&vc4file->perfmon.idr);
+}
+
+static int vc4_perfmon_idr_del(int id, void *elem, void *data)
+{
+	struct vc4_perfmon *perfmon = elem;
+
+	vc4_perfmon_put(perfmon);
+
+	return 0;
+}
+
+void vc4_perfmon_close_file(struct vc4_file *vc4file)
+{
+	mutex_lock(&vc4file->perfmon.lock);
+	idr_for_each(&vc4file->perfmon.idr, vc4_perfmon_idr_del, NULL);
+	idr_destroy(&vc4file->perfmon.idr);
+	mutex_unlock(&vc4file->perfmon.lock);
+}
+
+int vc4_perfmon_create_ioctl(struct drm_device *dev, void *data,
+			     struct drm_file *file_priv)
+{
+	struct vc4_file *vc4file = file_priv->driver_priv;
+	struct drm_vc4_perfmon_create *req = data;
+	struct vc4_perfmon *perfmon;
+	unsigned int i;
+	int ret;
+
+	/* Number of monitored counters cannot exceed HW limits. */
+	if (req->ncounters > DRM_VC4_MAX_PERF_COUNTERS ||
+	    !req->ncounters)
+		return -EINVAL;
+
+	/* Make sure all events are valid. */
+	for (i = 0; i < req->ncounters; i++) {
+		if (req->events[i] >= VC4_PERFCNT_NUM_EVENTS)
+			return -EINVAL;
+	}
+
+	perfmon = kzalloc(sizeof(*perfmon) + (req->ncounters * sizeof(u64)),
+			  GFP_KERNEL);
+	if (!perfmon)
+		return -ENOMEM;
+
+	for (i = 0; i < req->ncounters; i++)
+		perfmon->events[i] = req->events[i];
+
+	perfmon->ncounters = req->ncounters;
+
+	refcount_set(&perfmon->refcnt, 1);
+
+	mutex_lock(&vc4file->perfmon.lock);
+	ret = idr_alloc(&vc4file->perfmon.idr, perfmon, VC4_PERFMONID_MIN,
+			VC4_PERFMONID_MAX, GFP_KERNEL);
+	mutex_unlock(&vc4file->perfmon.lock);
+
+	if (ret < 0) {
+		kfree(perfmon);
+		return ret;
+	}
+
+	req->id = ret;
+	return 0;
+}
+
+int vc4_perfmon_destroy_ioctl(struct drm_device *dev, void *data,
+			      struct drm_file *file_priv)
+{
+	struct vc4_file *vc4file = file_priv->driver_priv;
+	struct drm_vc4_perfmon_destroy *req = data;
+	struct vc4_perfmon *perfmon;
+
+	mutex_lock(&vc4file->perfmon.lock);
+	perfmon = idr_remove(&vc4file->perfmon.idr, req->id);
+	mutex_unlock(&vc4file->perfmon.lock);
+
+	if (!perfmon)
+		return -EINVAL;
+
+	vc4_perfmon_put(perfmon);
+	return 0;
+}
+
+int vc4_perfmon_get_values_ioctl(struct drm_device *dev, void *data,
+				 struct drm_file *file_priv)
+{
+	struct vc4_file *vc4file = file_priv->driver_priv;
+	struct drm_vc4_perfmon_get_values *req = data;
+	struct vc4_perfmon *perfmon;
+	int ret;
+
+	mutex_lock(&vc4file->perfmon.lock);
+	perfmon = idr_find(&vc4file->perfmon.idr, req->id);
+	vc4_perfmon_get(perfmon);
+	mutex_unlock(&vc4file->perfmon.lock);
+
+	if (!perfmon)
+		return -EINVAL;
+
+	if (copy_to_user(u64_to_user_ptr(req->values_ptr), perfmon->counters,
+			 perfmon->ncounters * sizeof(u64)))
+		ret = -EFAULT;
+	else
+		ret = 0;
+
+	vc4_perfmon_put(perfmon);
+	return ret;
+}