Message-Id: <4ca15d0c3911412dbf21aa7173631500a15e13e2.1477741719.git.jglauber@cavium.com>
Date:   Sat, 29 Oct 2016 13:55:30 +0200
From:   Jan Glauber <jglauber@...ium.com>
To:     Mark Rutland <mark.rutland@....com>,
        Will Deacon <will.deacon@....com>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Jan Glauber <jglauber@...ium.com>
Subject: [PATCH v4 2/5] arm64: perf: Cavium ThunderX L2C TAD uncore support

Support counters of the L2 Cache tag and data units.

Signed-off-by: Jan Glauber <jglauber@...ium.com>
---
 drivers/perf/uncore/Makefile                |   3 +-
 drivers/perf/uncore/uncore_cavium.c         |   1 +
 drivers/perf/uncore/uncore_cavium.h         |   1 +
 drivers/perf/uncore/uncore_cavium_l2c_tad.c | 379 ++++++++++++++++++++++++++++
 4 files changed, 383 insertions(+), 1 deletion(-)
 create mode 100644 drivers/perf/uncore/uncore_cavium_l2c_tad.c

diff --git a/drivers/perf/uncore/Makefile b/drivers/perf/uncore/Makefile
index 6130e18..90850a2 100644
--- a/drivers/perf/uncore/Makefile
+++ b/drivers/perf/uncore/Makefile
@@ -1 +1,2 @@
-obj-$(CONFIG_UNCORE_PMU_CAVIUM) += uncore_cavium.o
+obj-$(CONFIG_UNCORE_PMU_CAVIUM) += uncore_cavium.o		\
+				   uncore_cavium_l2c_tad.o
diff --git a/drivers/perf/uncore/uncore_cavium.c b/drivers/perf/uncore/uncore_cavium.c
index a7b4277..15e1aec 100644
--- a/drivers/perf/uncore/uncore_cavium.c
+++ b/drivers/perf/uncore/uncore_cavium.c
@@ -346,6 +346,7 @@ static int __init thunder_uncore_init(void)
 	if (ret)
 		return ret;
 
+	thunder_uncore_l2c_tad_setup();
 	return 0;
 }
 late_initcall(thunder_uncore_init);
diff --git a/drivers/perf/uncore/uncore_cavium.h b/drivers/perf/uncore/uncore_cavium.h
index b5d64b5..70a8214 100644
--- a/drivers/perf/uncore/uncore_cavium.h
+++ b/drivers/perf/uncore/uncore_cavium.h
@@ -69,3 +69,4 @@ int thunder_uncore_setup(struct thunder_uncore *uncore, int id,
 ssize_t thunder_events_sysfs_show(struct device *dev,
 				  struct device_attribute *attr,
 				  char *page);
+int thunder_uncore_l2c_tad_setup(void);
diff --git a/drivers/perf/uncore/uncore_cavium_l2c_tad.c b/drivers/perf/uncore/uncore_cavium_l2c_tad.c
new file mode 100644
index 0000000..b97ba33
--- /dev/null
+++ b/drivers/perf/uncore/uncore_cavium_l2c_tad.c
@@ -0,0 +1,379 @@
+/*
+ * Cavium Thunder uncore PMU support,
+ * L2 Cache tag-and-data-units (L2C TAD) counters.
+ *
+ * Copyright 2016 Cavium Inc.
+ * Author: Jan Glauber <jan.glauber@...ium.com>
+ */
+
+#include <linux/perf_event.h>
+#include <linux/slab.h>
+
+#include "uncore_cavium.h"
+
+struct thunder_uncore *thunder_uncore_l2c_tad;
+
+#define L2C_TAD_NR_COUNTERS             4
+#define L2C_TAD_PRF_OFFSET		0x10000
+#define L2C_TAD_PFC_OFFSET		0x10100
+
+/*
+ * Counters are selected via L2C_TAD(x)_PRF:
+ *
+ *   63					    32
+ *   +---------------------------------------+
+ *   |  Reserved			     |
+ *   +---------------------------------------+
+ *   | CNT3SEL | CNT2SEL | CNT1SEL | CNT0SEL |
+ *   +---------------------------------------+
+ *   31       24	16	  8	     0
+ *
+ * config_base contains the offset of the selected CNTxSEL in the mapped BAR.
+ *
+ * Counters are read via L2C_TAD(x)_PFC(0..3).
+ * event_base contains the associated address to read the counter.
+ */
+
+/* L2C TAD event list */
+#define L2C_TAD_EVENTS_DISABLED			0x00
+#define L2C_TAD_EVENT_L2T_HIT			0x01
+#define L2C_TAD_EVENT_L2T_MISS			0x02
+#define L2C_TAD_EVENT_L2T_NOALLOC		0x03
+#define L2C_TAD_EVENT_L2_VIC			0x04
+#define L2C_TAD_EVENT_SC_FAIL			0x05
+#define L2C_TAD_EVENT_SC_PASS			0x06
+#define L2C_TAD_EVENT_LFB_OCC			0x07
+#define L2C_TAD_EVENT_WAIT_LFB			0x08
+#define L2C_TAD_EVENT_WAIT_VAB			0x09
+#define L2C_TAD_EVENT_OPEN_CCPI			0x0a
+#define L2C_TAD_EVENT_LOOKUP			0x40
+#define L2C_TAD_EVENT_LOOKUP_XMC_LCL		0x41
+#define L2C_TAD_EVENT_LOOKUP_XMC_RMT		0x42
+#define L2C_TAD_EVENT_LOOKUP_MIB		0x43
+#define L2C_TAD_EVENT_LOOKUP_ALL		0x44
+#define L2C_TAD_EVENT_TAG_ALC_HIT		0x48
+#define L2C_TAD_EVENT_TAG_ALC_MISS		0x49
+#define L2C_TAD_EVENT_TAG_ALC_NALC		0x4a
+#define L2C_TAD_EVENT_TAG_NALC_HIT		0x4b
+#define L2C_TAD_EVENT_TAG_NALC_MISS		0x4c
+#define L2C_TAD_EVENT_LMC_WR			0x4e
+#define L2C_TAD_EVENT_LMC_SBLKDTY		0x4f
+#define L2C_TAD_EVENT_TAG_ALC_RTG_HIT		0x50
+#define L2C_TAD_EVENT_TAG_ALC_RTG_HITE		0x51
+#define L2C_TAD_EVENT_TAG_ALC_RTG_HITS		0x52
+#define L2C_TAD_EVENT_TAG_ALC_RTG_MISS		0x53
+#define L2C_TAD_EVENT_TAG_NALC_RTG_HIT		0x54
+#define L2C_TAD_EVENT_TAG_NALC_RTG_MISS		0x55
+#define L2C_TAD_EVENT_TAG_NALC_RTG_HITE		0x56
+#define L2C_TAD_EVENT_TAG_NALC_RTG_HITS		0x57
+#define L2C_TAD_EVENT_TAG_ALC_LCL_EVICT		0x58
+#define L2C_TAD_EVENT_TAG_ALC_LCL_CLNVIC	0x59
+#define L2C_TAD_EVENT_TAG_ALC_LCL_DTYVIC	0x5a
+#define L2C_TAD_EVENT_TAG_ALC_RMT_EVICT		0x5b
+#define L2C_TAD_EVENT_TAG_ALC_RMT_VIC		0x5c
+#define L2C_TAD_EVENT_RTG_ALC			0x5d
+#define L2C_TAD_EVENT_RTG_ALC_HIT		0x5e
+#define L2C_TAD_EVENT_RTG_ALC_HITWB		0x5f
+#define L2C_TAD_EVENT_STC_TOTAL			0x60
+#define L2C_TAD_EVENT_STC_TOTAL_FAIL		0x61
+#define L2C_TAD_EVENT_STC_RMT			0x62
+#define L2C_TAD_EVENT_STC_RMT_FAIL		0x63
+#define L2C_TAD_EVENT_STC_LCL			0x64
+#define L2C_TAD_EVENT_STC_LCL_FAIL		0x65
+#define L2C_TAD_EVENT_OCI_RTG_WAIT		0x68
+#define L2C_TAD_EVENT_OCI_FWD_CYC_HIT		0x69
+#define L2C_TAD_EVENT_OCI_FWD_RACE		0x6a
+#define L2C_TAD_EVENT_OCI_HAKS			0x6b
+#define L2C_TAD_EVENT_OCI_FLDX_TAG_E_NODAT	0x6c
+#define L2C_TAD_EVENT_OCI_FLDX_TAG_E_DAT	0x6d
+#define L2C_TAD_EVENT_OCI_RLDD			0x6e
+#define L2C_TAD_EVENT_OCI_RLDD_PEMD		0x6f
+#define L2C_TAD_EVENT_OCI_RRQ_DAT_CNT		0x70
+#define L2C_TAD_EVENT_OCI_RRQ_DAT_DMASK		0x71
+#define L2C_TAD_EVENT_OCI_RSP_DAT_CNT		0x72
+#define L2C_TAD_EVENT_OCI_RSP_DAT_DMASK		0x73
+#define L2C_TAD_EVENT_OCI_RSP_DAT_VICD_CNT	0x74
+#define L2C_TAD_EVENT_OCI_RSP_DAT_VICD_DMASK	0x75
+#define L2C_TAD_EVENT_OCI_RTG_ALC_EVICT		0x76
+#define L2C_TAD_EVENT_OCI_RTG_ALC_VIC		0x77
+#define L2C_TAD_EVENT_QD0_IDX			0x80
+#define L2C_TAD_EVENT_QD0_RDAT			0x81
+#define L2C_TAD_EVENT_QD0_BNKS			0x82
+#define L2C_TAD_EVENT_QD0_WDAT			0x83
+#define L2C_TAD_EVENT_QD1_IDX			0x90
+#define L2C_TAD_EVENT_QD1_RDAT			0x91
+#define L2C_TAD_EVENT_QD1_BNKS			0x92
+#define L2C_TAD_EVENT_QD1_WDAT			0x93
+#define L2C_TAD_EVENT_QD2_IDX			0xa0
+#define L2C_TAD_EVENT_QD2_RDAT			0xa1
+#define L2C_TAD_EVENT_QD2_BNKS			0xa2
+#define L2C_TAD_EVENT_QD2_WDAT			0xa3
+#define L2C_TAD_EVENT_QD3_IDX			0xb0
+#define L2C_TAD_EVENT_QD3_RDAT			0xb1
+#define L2C_TAD_EVENT_QD3_BNKS			0xb2
+#define L2C_TAD_EVENT_QD3_WDAT			0xb3
+#define L2C_TAD_EVENT_QD4_IDX			0xc0
+#define L2C_TAD_EVENT_QD4_RDAT			0xc1
+#define L2C_TAD_EVENT_QD4_BNKS			0xc2
+#define L2C_TAD_EVENT_QD4_WDAT			0xc3
+#define L2C_TAD_EVENT_QD5_IDX			0xd0
+#define L2C_TAD_EVENT_QD5_RDAT			0xd1
+#define L2C_TAD_EVENT_QD5_BNKS			0xd2
+#define L2C_TAD_EVENT_QD5_WDAT			0xd3
+#define L2C_TAD_EVENT_QD6_IDX			0xe0
+#define L2C_TAD_EVENT_QD6_RDAT			0xe1
+#define L2C_TAD_EVENT_QD6_BNKS			0xe2
+#define L2C_TAD_EVENT_QD6_WDAT			0xe3
+#define L2C_TAD_EVENT_QD7_IDX			0xf0
+#define L2C_TAD_EVENT_QD7_RDAT			0xf1
+#define L2C_TAD_EVENT_QD7_BNKS			0xf2
+#define L2C_TAD_EVENT_QD7_WDAT			0xf3
+
+static void thunder_uncore_start_l2c_tad(struct perf_event *event, int flags)
+{
+	struct thunder_uncore *uncore = to_uncore(event->pmu);
+	struct hw_perf_event *hwc = &event->hw;
+	struct thunder_uncore_node *node;
+	struct thunder_uncore_unit *unit;
+	int id;
+
+	node = get_node(hwc->config, uncore);
+	id = get_id(hwc->config);
+
+	/* reset counter values to zero */
+	if (flags & PERF_EF_RELOAD)
+		list_for_each_entry(unit, &node->unit_list, entry)
+			writeq(0, hwc->event_base + unit->map);
+
+	/* start counters on all units on the node */
+	list_for_each_entry(unit, &node->unit_list, entry)
+		writeb(id, hwc->config_base + unit->map);
+
+	hwc->state = 0;
+	perf_event_update_userpage(event);
+}
+
+static void thunder_uncore_stop_l2c_tad(struct perf_event *event, int flags)
+{
+	struct thunder_uncore *uncore = to_uncore(event->pmu);
+	struct hw_perf_event *hwc = &event->hw;
+	struct thunder_uncore_node *node;
+	struct thunder_uncore_unit *unit;
+
+	node = get_node(hwc->config, uncore);
+
+	/* disable counters for all units on the node */
+	list_for_each_entry(unit, &node->unit_list, entry)
+		writeb(L2C_TAD_EVENTS_DISABLED, hwc->config_base + unit->map);
+	hwc->state |= PERF_HES_STOPPED;
+
+	if ((flags & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) {
+		thunder_uncore_read(event);
+		hwc->state |= PERF_HES_UPTODATE;
+	}
+}
+
+static int thunder_uncore_add_l2c_tad(struct perf_event *event, int flags)
+{
+	struct thunder_uncore *uncore = to_uncore(event->pmu);
+	struct hw_perf_event *hwc = &event->hw;
+	struct thunder_uncore_node *node;
+	int i;
+
+	node = get_node(hwc->config, uncore);
+
+	/* take the first available counter */
+	for (i = 0; i < node->num_counters; i++) {
+		if (!cmpxchg(&node->events[i], NULL, event)) {
+			hwc->idx = i;
+			break;
+		}
+	}
+
+	if (hwc->idx == -1)
+		return -EBUSY;
+
+	/* see comment at beginning of file */
+	hwc->config_base = L2C_TAD_PRF_OFFSET + hwc->idx;
+	hwc->event_base = L2C_TAD_PFC_OFFSET + hwc->idx * sizeof(u64);
+
+	hwc->state = PERF_HES_UPTODATE | PERF_HES_STOPPED;
+	if (flags & PERF_EF_START)
+		thunder_uncore_start(event, PERF_EF_RELOAD);
+	return 0;
+}
+
+PMU_FORMAT_ATTR(event, "config:0-7");
+
+static struct attribute *thunder_l2c_tad_format_attr[] = {
+	&format_attr_event.attr,
+	&format_attr_node.attr,
+	NULL,
+};
+
+static struct attribute_group thunder_l2c_tad_format_group = {
+	.name = "format",
+	.attrs = thunder_l2c_tad_format_attr,
+};
+
+static struct attribute *thunder_l2c_tad_events_attr[] = {
+	UC_EVENT_ENTRY(l2t_hit,			L2C_TAD_EVENT_L2T_HIT),
+	UC_EVENT_ENTRY(l2t_miss,		L2C_TAD_EVENT_L2T_MISS),
+	UC_EVENT_ENTRY(l2t_noalloc,		L2C_TAD_EVENT_L2T_NOALLOC),
+	UC_EVENT_ENTRY(l2_vic,			L2C_TAD_EVENT_L2_VIC),
+	UC_EVENT_ENTRY(sc_fail,			L2C_TAD_EVENT_SC_FAIL),
+	UC_EVENT_ENTRY(sc_pass,			L2C_TAD_EVENT_SC_PASS),
+	UC_EVENT_ENTRY(lfb_occ,			L2C_TAD_EVENT_LFB_OCC),
+	UC_EVENT_ENTRY(wait_lfb,		L2C_TAD_EVENT_WAIT_LFB),
+	UC_EVENT_ENTRY(wait_vab,		L2C_TAD_EVENT_WAIT_VAB),
+	UC_EVENT_ENTRY(open_ccpi,		L2C_TAD_EVENT_OPEN_CCPI),
+	UC_EVENT_ENTRY(lookup,			L2C_TAD_EVENT_LOOKUP),
+	UC_EVENT_ENTRY(lookup_xmc_lcl,		L2C_TAD_EVENT_LOOKUP_XMC_LCL),
+	UC_EVENT_ENTRY(lookup_xmc_rmt,		L2C_TAD_EVENT_LOOKUP_XMC_RMT),
+	UC_EVENT_ENTRY(lookup_mib,		L2C_TAD_EVENT_LOOKUP_MIB),
+	UC_EVENT_ENTRY(lookup_all,		L2C_TAD_EVENT_LOOKUP_ALL),
+	UC_EVENT_ENTRY(tag_alc_hit,		L2C_TAD_EVENT_TAG_ALC_HIT),
+	UC_EVENT_ENTRY(tag_alc_miss,		L2C_TAD_EVENT_TAG_ALC_MISS),
+	UC_EVENT_ENTRY(tag_alc_nalc,		L2C_TAD_EVENT_TAG_ALC_NALC),
+	UC_EVENT_ENTRY(tag_nalc_hit,		L2C_TAD_EVENT_TAG_NALC_HIT),
+	UC_EVENT_ENTRY(tag_nalc_miss,		L2C_TAD_EVENT_TAG_NALC_MISS),
+	UC_EVENT_ENTRY(lmc_wr,			L2C_TAD_EVENT_LMC_WR),
+	UC_EVENT_ENTRY(lmc_sblkdty,		L2C_TAD_EVENT_LMC_SBLKDTY),
+	UC_EVENT_ENTRY(tag_alc_rtg_hit,		L2C_TAD_EVENT_TAG_ALC_RTG_HIT),
+	UC_EVENT_ENTRY(tag_alc_rtg_hite,	L2C_TAD_EVENT_TAG_ALC_RTG_HITE),
+	UC_EVENT_ENTRY(tag_alc_rtg_hits,	L2C_TAD_EVENT_TAG_ALC_RTG_HITS),
+	UC_EVENT_ENTRY(tag_alc_rtg_miss,	L2C_TAD_EVENT_TAG_ALC_RTG_MISS),
+	UC_EVENT_ENTRY(tag_alc_nalc_rtg_hit,	L2C_TAD_EVENT_TAG_NALC_RTG_HIT),
+	UC_EVENT_ENTRY(tag_nalc_rtg_miss,	L2C_TAD_EVENT_TAG_NALC_RTG_MISS),
+	UC_EVENT_ENTRY(tag_nalc_rtg_hite,	L2C_TAD_EVENT_TAG_NALC_RTG_HITE),
+	UC_EVENT_ENTRY(tag_nalc_rtg_hits,	L2C_TAD_EVENT_TAG_NALC_RTG_HITS),
+	UC_EVENT_ENTRY(tag_alc_lcl_evict,	L2C_TAD_EVENT_TAG_ALC_LCL_EVICT),
+	UC_EVENT_ENTRY(tag_alc_lcl_clnvic,	L2C_TAD_EVENT_TAG_ALC_LCL_CLNVIC),
+	UC_EVENT_ENTRY(tag_alc_lcl_dtyvic,	L2C_TAD_EVENT_TAG_ALC_LCL_DTYVIC),
+	UC_EVENT_ENTRY(tag_alc_rmt_evict,	L2C_TAD_EVENT_TAG_ALC_RMT_EVICT),
+	UC_EVENT_ENTRY(tag_alc_rmt_vic,		L2C_TAD_EVENT_TAG_ALC_RMT_VIC),
+	UC_EVENT_ENTRY(rtg_alc,			L2C_TAD_EVENT_RTG_ALC),
+	UC_EVENT_ENTRY(rtg_alc_hit,		L2C_TAD_EVENT_RTG_ALC_HIT),
+	UC_EVENT_ENTRY(rtg_alc_hitwb,		L2C_TAD_EVENT_RTG_ALC_HITWB),
+	UC_EVENT_ENTRY(stc_total,		L2C_TAD_EVENT_STC_TOTAL),
+	UC_EVENT_ENTRY(stc_total_fail,		L2C_TAD_EVENT_STC_TOTAL_FAIL),
+	UC_EVENT_ENTRY(stc_rmt,			L2C_TAD_EVENT_STC_RMT),
+	UC_EVENT_ENTRY(stc_rmt_fail,		L2C_TAD_EVENT_STC_RMT_FAIL),
+	UC_EVENT_ENTRY(stc_lcl,			L2C_TAD_EVENT_STC_LCL),
+	UC_EVENT_ENTRY(stc_lcl_fail,		L2C_TAD_EVENT_STC_LCL_FAIL),
+	UC_EVENT_ENTRY(oci_rtg_wait,		L2C_TAD_EVENT_OCI_RTG_WAIT),
+	UC_EVENT_ENTRY(oci_fwd_cyc_hit,		L2C_TAD_EVENT_OCI_FWD_CYC_HIT),
+	UC_EVENT_ENTRY(oci_fwd_race,		L2C_TAD_EVENT_OCI_FWD_RACE),
+	UC_EVENT_ENTRY(oci_haks,		L2C_TAD_EVENT_OCI_HAKS),
+	UC_EVENT_ENTRY(oci_fldx_tag_e_nodat,	L2C_TAD_EVENT_OCI_FLDX_TAG_E_NODAT),
+	UC_EVENT_ENTRY(oci_fldx_tag_e_dat,	L2C_TAD_EVENT_OCI_FLDX_TAG_E_DAT),
+	UC_EVENT_ENTRY(oci_rldd,		L2C_TAD_EVENT_OCI_RLDD),
+	UC_EVENT_ENTRY(oci_rldd_pemd,		L2C_TAD_EVENT_OCI_RLDD_PEMD),
+	UC_EVENT_ENTRY(oci_rrq_dat_cnt,		L2C_TAD_EVENT_OCI_RRQ_DAT_CNT),
+	UC_EVENT_ENTRY(oci_rrq_dat_dmask,	L2C_TAD_EVENT_OCI_RRQ_DAT_DMASK),
+	UC_EVENT_ENTRY(oci_rsp_dat_cnt,		L2C_TAD_EVENT_OCI_RSP_DAT_CNT),
+	UC_EVENT_ENTRY(oci_rsp_dat_dmaks,	L2C_TAD_EVENT_OCI_RSP_DAT_DMASK),
+	UC_EVENT_ENTRY(oci_rsp_dat_vicd_cnt,	L2C_TAD_EVENT_OCI_RSP_DAT_VICD_CNT),
+	UC_EVENT_ENTRY(oci_rsp_dat_vicd_dmask,	L2C_TAD_EVENT_OCI_RSP_DAT_VICD_DMASK),
+	UC_EVENT_ENTRY(oci_rtg_alc_evict,	L2C_TAD_EVENT_OCI_RTG_ALC_EVICT),
+	UC_EVENT_ENTRY(oci_rtg_alc_vic,		L2C_TAD_EVENT_OCI_RTG_ALC_VIC),
+	UC_EVENT_ENTRY(qd0_idx,			L2C_TAD_EVENT_QD0_IDX),
+	UC_EVENT_ENTRY(qd0_rdat,		L2C_TAD_EVENT_QD0_RDAT),
+	UC_EVENT_ENTRY(qd0_bnks,		L2C_TAD_EVENT_QD0_BNKS),
+	UC_EVENT_ENTRY(qd0_wdat,		L2C_TAD_EVENT_QD0_WDAT),
+	UC_EVENT_ENTRY(qd1_idx,			L2C_TAD_EVENT_QD1_IDX),
+	UC_EVENT_ENTRY(qd1_rdat,		L2C_TAD_EVENT_QD1_RDAT),
+	UC_EVENT_ENTRY(qd1_bnks,		L2C_TAD_EVENT_QD1_BNKS),
+	UC_EVENT_ENTRY(qd1_wdat,		L2C_TAD_EVENT_QD1_WDAT),
+	UC_EVENT_ENTRY(qd2_idx,			L2C_TAD_EVENT_QD2_IDX),
+	UC_EVENT_ENTRY(qd2_rdat,		L2C_TAD_EVENT_QD2_RDAT),
+	UC_EVENT_ENTRY(qd2_bnks,		L2C_TAD_EVENT_QD2_BNKS),
+	UC_EVENT_ENTRY(qd2_wdat,		L2C_TAD_EVENT_QD2_WDAT),
+	UC_EVENT_ENTRY(qd3_idx,			L2C_TAD_EVENT_QD3_IDX),
+	UC_EVENT_ENTRY(qd3_rdat,		L2C_TAD_EVENT_QD3_RDAT),
+	UC_EVENT_ENTRY(qd3_bnks,		L2C_TAD_EVENT_QD3_BNKS),
+	UC_EVENT_ENTRY(qd3_wdat,		L2C_TAD_EVENT_QD3_WDAT),
+	UC_EVENT_ENTRY(qd4_idx,			L2C_TAD_EVENT_QD4_IDX),
+	UC_EVENT_ENTRY(qd4_rdat,		L2C_TAD_EVENT_QD4_RDAT),
+	UC_EVENT_ENTRY(qd4_bnks,		L2C_TAD_EVENT_QD4_BNKS),
+	UC_EVENT_ENTRY(qd4_wdat,		L2C_TAD_EVENT_QD4_WDAT),
+	UC_EVENT_ENTRY(qd5_idx,			L2C_TAD_EVENT_QD5_IDX),
+	UC_EVENT_ENTRY(qd5_rdat,		L2C_TAD_EVENT_QD5_RDAT),
+	UC_EVENT_ENTRY(qd5_bnks,		L2C_TAD_EVENT_QD5_BNKS),
+	UC_EVENT_ENTRY(qd5_wdat,		L2C_TAD_EVENT_QD5_WDAT),
+	UC_EVENT_ENTRY(qd6_idx,			L2C_TAD_EVENT_QD6_IDX),
+	UC_EVENT_ENTRY(qd6_rdat,		L2C_TAD_EVENT_QD6_RDAT),
+	UC_EVENT_ENTRY(qd6_bnks,		L2C_TAD_EVENT_QD6_BNKS),
+	UC_EVENT_ENTRY(qd6_wdat,		L2C_TAD_EVENT_QD6_WDAT),
+	UC_EVENT_ENTRY(qd7_idx,			L2C_TAD_EVENT_QD7_IDX),
+	UC_EVENT_ENTRY(qd7_rdat,		L2C_TAD_EVENT_QD7_RDAT),
+	UC_EVENT_ENTRY(qd7_bnks,		L2C_TAD_EVENT_QD7_BNKS),
+	UC_EVENT_ENTRY(qd7_wdat,		L2C_TAD_EVENT_QD7_WDAT),
+	NULL,
+};
+
+static struct attribute_group thunder_l2c_tad_events_group = {
+	.name = "events",
+	.attrs = thunder_l2c_tad_events_attr,
+};
+
+static const struct attribute_group *thunder_l2c_tad_attr_groups[] = {
+	&thunder_uncore_attr_group,
+	&thunder_l2c_tad_format_group,
+	&thunder_l2c_tad_events_group,
+	NULL,
+};
+
+struct pmu thunder_l2c_tad_pmu = {
+	.name		= "thunder_l2c_tad",
+	.task_ctx_nr    = perf_invalid_context,
+	.event_init	= thunder_uncore_event_init,
+	.add		= thunder_uncore_add_l2c_tad,
+	.del		= thunder_uncore_del,
+	.start		= thunder_uncore_start_l2c_tad,
+	.stop		= thunder_uncore_stop_l2c_tad,
+	.read		= thunder_uncore_read,
+	.attr_groups	= thunder_l2c_tad_attr_groups,
+};
+
+static bool event_valid(u64 c)
+{
+	if ((c > 0 &&
+	     c <= L2C_TAD_EVENT_OPEN_CCPI) ||
+	    (c >= L2C_TAD_EVENT_LOOKUP &&
+	     c <= L2C_TAD_EVENT_LOOKUP_ALL) ||
+	    (c >= L2C_TAD_EVENT_TAG_ALC_HIT &&
+	     c <= L2C_TAD_EVENT_TAG_NALC_MISS) ||
+	    (c >= L2C_TAD_EVENT_LMC_WR &&
+	     c <= L2C_TAD_EVENT_STC_LCL_FAIL) ||
+	    (c >= L2C_TAD_EVENT_OCI_RTG_WAIT &&
+	     c <= L2C_TAD_EVENT_OCI_RTG_ALC_VIC) ||
+	    /* L2C_TAD_EVENT_QD[0..7] IDX,RDAT,BNKS,WDAT => 0x80 .. 0xf3 */
+	    ((c & 0x80) && ((c & 0xf) <= 3)))
+		return true;
+
+	return false;
+}
+
+int __init thunder_uncore_l2c_tad_setup(void)
+{
+	int ret = -ENOMEM;
+
+	thunder_uncore_l2c_tad = kzalloc(sizeof(*thunder_uncore_l2c_tad),
+					 GFP_KERNEL);
+	if (!thunder_uncore_l2c_tad)
+		goto fail_nomem;
+
+	ret = thunder_uncore_setup(thunder_uncore_l2c_tad, 0xa02e,
+				   &thunder_l2c_tad_pmu, L2C_TAD_NR_COUNTERS);
+	if (ret)
+		goto fail;
+
+	thunder_uncore_l2c_tad->event_valid = event_valid;
+	return 0;
+
+fail:
+	kfree(thunder_uncore_l2c_tad);
+fail_nomem:
+	return ret;
+}
-- 
2.9.0.rc0.21.g7777322

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