Merge tag 'char-misc-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
 "Here is the big set of char/misc driver changes for 5.15-rc1.

  Lots of different driver subsystems are being updated in here,
  notably:

   - mhi subsystem update

   - fpga subsystem update

   - coresight/hwtracing subsystem update

   - interconnect subsystem update

   - nvmem subsystem update

   - parport drivers update

   - phy subsystem update

   - soundwire subsystem update

  and there are some other char/misc drivers being updated as well:

   - binder driver additions

   - new misc drivers

   - lkdtm driver updates

   - mei driver updates

   - sram driver updates

   - other minor driver updates.

  Note, there are no habanalabs driver updates in this pull request,
  that will probably come later before -rc1 is out in a different
  request.

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'char-misc-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (169 commits)
  Revert "bus: mhi: Add inbound buffers allocation flag"
  misc/pvpanic: fix set driver data
  VMCI: fix NULL pointer dereference when unmapping queue pair
  char: mware: fix returnvar.cocci warnings
  parport: remove non-zero check on count
  soundwire: cadence: do not extend reset delay
  soundwire: intel: conditionally exit clock stop mode on system suspend
  soundwire: intel: skip suspend/resume/wake when link was not started
  soundwire: intel: fix potential race condition during power down
  phy: qcom-qmp: Add support for SM6115 UFS phy
  dt-bindings: phy: qcom,qmp: Add SM6115 UFS PHY bindings
  phy: qmp: Provide unique clock names for DP clocks
  lkdtm: remove IDE_CORE_CP crashpoint
  lkdtm: replace SCSI_DISPATCH_CMD with SCSI_QUEUE_RQ
  coresight: Replace deprecated CPU-hotplug functions.
  Documentation: coresight: Add documentation for CoreSight config
  coresight: syscfg: Add initial configfs support
  coresight: config: Add preloaded configurations
  coresight: etm4x: Add complex configuration handlers to etmv4
  coresight: etm-perf: Update to activate selected configuration
  ...

1 files changed, 153 insertions, 0 deletions

diff --git a/drivers/hwtracing/coresight/coresight-cfg-afdo.c b/drivers/hwtracing/coresight/coresight-cfg-afdo.c
new file mode 100644
index 000000000000..84b31184252b
--- /dev/null
+++ b/drivers/hwtracing/coresight/coresight-cfg-afdo.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright(C) 2020 Linaro Limited. All rights reserved.
+ * Author: Mike Leach <mike.leach@linaro.org>
+ */
+
+#include "coresight-config.h"
+
+/* ETMv4 includes and features */
+#if IS_ENABLED(CONFIG_CORESIGHT_SOURCE_ETM4X)
+#include "coresight-etm4x-cfg.h"
+
+/* preload configurations and features */
+
+/* preload in features for ETMv4 */
+
+/* strobe feature */
+static struct cscfg_parameter_desc strobe_params[] = {
+	{
+		.name = "window",
+		.value = 5000,
+	},
+	{
+		.name = "period",
+		.value = 10000,
+	},
+};
+
+static struct cscfg_regval_desc strobe_regs[] = {
+	/* resource selectors */
+	{
+		.type = CS_CFG_REG_TYPE_RESOURCE,
+		.offset = TRCRSCTLRn(2),
+		.hw_info = ETM4_CFG_RES_SEL,
+		.val32 = 0x20001,
+	},
+	{
+		.type = CS_CFG_REG_TYPE_RESOURCE,
+		.offset = TRCRSCTLRn(3),
+		.hw_info = ETM4_CFG_RES_SEQ,
+		.val32 = 0x20002,
+	},
+	/* strobe window counter 0 - reload from param 0 */
+	{
+		.type = CS_CFG_REG_TYPE_RESOURCE | CS_CFG_REG_TYPE_VAL_SAVE,
+		.offset = TRCCNTVRn(0),
+		.hw_info = ETM4_CFG_RES_CTR,
+	},
+	{
+		.type = CS_CFG_REG_TYPE_RESOURCE | CS_CFG_REG_TYPE_VAL_PARAM,
+		.offset = TRCCNTRLDVRn(0),
+		.hw_info = ETM4_CFG_RES_CTR,
+		.val32 = 0,
+	},
+	{
+		.type = CS_CFG_REG_TYPE_RESOURCE,
+		.offset = TRCCNTCTLRn(0),
+		.hw_info = ETM4_CFG_RES_CTR,
+		.val32 = 0x10001,
+	},
+	/* strobe period counter 1 - reload from param 1 */
+	{
+		.type = CS_CFG_REG_TYPE_RESOURCE | CS_CFG_REG_TYPE_VAL_SAVE,
+		.offset = TRCCNTVRn(1),
+		.hw_info = ETM4_CFG_RES_CTR,
+	},
+	{
+		.type = CS_CFG_REG_TYPE_RESOURCE | CS_CFG_REG_TYPE_VAL_PARAM,
+		.offset = TRCCNTRLDVRn(1),
+		.hw_info = ETM4_CFG_RES_CTR,
+		.val32 = 1,
+	},
+	{
+		.type = CS_CFG_REG_TYPE_RESOURCE,
+		.offset = TRCCNTCTLRn(1),
+		.hw_info = ETM4_CFG_RES_CTR,
+		.val32 = 0x8102,
+	},
+	/* sequencer */
+	{
+		.type = CS_CFG_REG_TYPE_RESOURCE,
+		.offset = TRCSEQEVRn(0),
+		.hw_info = ETM4_CFG_RES_SEQ,
+		.val32 = 0x0081,
+	},
+	{
+		.type = CS_CFG_REG_TYPE_RESOURCE,
+		.offset = TRCSEQEVRn(1),
+		.hw_info = ETM4_CFG_RES_SEQ,
+		.val32 = 0x0000,
+	},
+	/* view-inst */
+	{
+		.type = CS_CFG_REG_TYPE_STD | CS_CFG_REG_TYPE_VAL_MASK,
+		.offset = TRCVICTLR,
+		.val32 = 0x0003,
+		.mask32 = 0x0003,
+	},
+	/* end of regs */
+};
+
+struct cscfg_feature_desc strobe_etm4x = {
+	.name = "strobing",
+	.description = "Generate periodic trace capture windows.\n"
+		       "parameter \'window\': a number of CPU cycles (W)\n"
+		       "parameter \'period\': trace enabled for W cycles every period x W cycles\n",
+	.match_flags = CS_CFG_MATCH_CLASS_SRC_ETM4,
+	.nr_params = ARRAY_SIZE(strobe_params),
+	.params_desc = strobe_params,
+	.nr_regs = ARRAY_SIZE(strobe_regs),
+	.regs_desc = strobe_regs,
+};
+
+/* create an autofdo configuration */
+
+/* we will provide 9 sets of preset parameter values */
+#define AFDO_NR_PRESETS	9
+/* the total number of parameters in used features */
+#define AFDO_NR_PARAMS	ARRAY_SIZE(strobe_params)
+
+static const char *afdo_ref_names[] = {
+	"strobing",
+};
+
+/*
+ * set of presets leaves strobing window constant while varying period to allow
+ * experimentation with mark / space ratios for various workloads
+ */
+static u64 afdo_presets[AFDO_NR_PRESETS][AFDO_NR_PARAMS] = {
+	{ 5000, 2 },
+	{ 5000, 4 },
+	{ 5000, 8 },
+	{ 5000, 16 },
+	{ 5000, 64 },
+	{ 5000, 128 },
+	{ 5000, 512 },
+	{ 5000, 1024 },
+	{ 5000, 4096 },
+};
+
+struct cscfg_config_desc afdo_etm4x = {
+	.name = "autofdo",
+	.description = "Setup ETMs with strobing for autofdo\n"
+	"Supplied presets allow experimentation with mark-space ratio for various loads\n",
+	.nr_feat_refs = ARRAY_SIZE(afdo_ref_names),
+	.feat_ref_names = afdo_ref_names,
+	.nr_presets = AFDO_NR_PRESETS,
+	.nr_total_params = AFDO_NR_PARAMS,
+	.presets = &afdo_presets[0][0],
+};
+
+/* end of ETM4x configurations */
+#endif	/* IS_ENABLED(CONFIG_CORESIGHT_SOURCE_ETM4X) */