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perf/arm-cmn: Add CMN-650 support

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Add the identifiers and events for CMN-650, which slots into its
evolutionary position between CMN-600 and the 700-series products.
Imagine CMN-600 made bigger, and with most of the rough edges smoothed
off, but that then balanced out by some bonkers PMU functionality for
the new HN-P enhancement in CMN-650r2.

Most of the CXG events are actually common to newer revisions of CMN-600
too, so they're arguably a little late; oh well.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Link: https://lore.kernel.org/r/b0adc5824db53f71a2b561c293e2120390106536.1650320598.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Robin Murphy 2022-04-18 23:57:39 +01:00 committed by Will Deacon
parent 2b60a22b70
commit 8e504d93ac
1 changed files with 176 additions and 46 deletions
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222
drivers/perf/arm-cmn.c
View File

@ -39,7 +39,7 @@
#define CMN_CHILD_NODE_ADDR GENMASK(27, 0)
#define CMN_CHILD_NODE_EXTERNAL BIT(31)
#define CMN_MAX_DIMENSION 8
#define CMN_MAX_DIMENSION 12
#define CMN_MAX_XPS (CMN_MAX_DIMENSION * CMN_MAX_DIMENSION)
#define CMN_MAX_DTMS (CMN_MAX_XPS + (CMN_MAX_DIMENSION - 1) * 4)
@ -65,7 +65,9 @@
/* For most nodes, this is all there is */
#define CMN_PMU_EVENT_SEL 0x000
#define CMN_PMU_EVENTn_ID_SHIFT(n) ((n) * 8)
/* HN-Ps are weird... */
#define CMN_HNP_PMU_EVENT_SEL 0x008
/* DTMs live in the PMU space of XP registers */
#define CMN_DTM_WPn(n) (0x1A0 + (n) * 0x18)
@ -177,9 +179,12 @@
enum cmn_model {
CMN_ANY = -1,
CMN600 = 1,
CI700 = 2,
CMN650 = 2,
CI700 = 8,
/* ...and then we can use bitmap tricks for commonality */
CMN_ANY = -1,
NOT_CMN600 = -2,
};
/* CMN-600 r0px shouldn't exist in silicon, thankfully */
@ -191,6 +196,11 @@ enum cmn_revision {
CMN600_R2P0,
CMN600_R3P0,
CMN600_R3P1,
CMN650_R0P0 = 0,
CMN650_R1P0,
CMN650_R1P1,
CMN650_R2P0,
CMN650_R1P2,
CI700_R0P0 = 0,
CI700_R1P0,
CI700_R2P0,
@ -211,6 +221,7 @@ enum cmn_node_type {
CMN_TYPE_RND = 0xd,
CMN_TYPE_RNSAM = 0xf,
CMN_TYPE_MTSX,
CMN_TYPE_HNP,
CMN_TYPE_CXRA = 0x100,
CMN_TYPE_CXHA = 0x101,
CMN_TYPE_CXLA = 0x102,
@ -307,9 +318,7 @@ struct arm_cmn_nodeid {
static int arm_cmn_xyidbits(const struct arm_cmn *cmn)
{
int dim = max(cmn->mesh_x, cmn->mesh_y);
return dim > 4 ? 3 : 2;
return fls((cmn->mesh_x - 1) | (cmn->mesh_y - 1) | 2);
}
static struct arm_cmn_nodeid arm_cmn_nid(const struct arm_cmn *cmn, u16 id)
@ -362,6 +371,7 @@ static struct dentry *arm_cmn_debugfs;
static const char *arm_cmn_device_type(u8 type)
{
switch(type) {
case 0x00: return " |";
case 0x01: return " RN-I |";
case 0x02: return " RN-D |";
case 0x04: return " RN-F_B |";
@ -371,6 +381,7 @@ static const char *arm_cmn_device_type(u8 type)
case 0x08: return " HN-T |";
case 0x09: return " HN-I |";
case 0x0a: return " HN-D |";
case 0x0b: return " HN-P |";
case 0x0c: return " SN-F |";
case 0x0d: return " SBSX |";
case 0x0e: return " HN-F |";
@ -383,8 +394,10 @@ static const char *arm_cmn_device_type(u8 type)
case 0x15: return "RN-F_D_E|";
case 0x16: return " RN-F_C |";
case 0x17: return "RN-F_C_E|";
case 0x18: return " RN-F_E |";
case 0x19: return "RN-F_E_E|";
case 0x1c: return " MTSX |";
default: return " |";
default: return " ???? |";
}
}
@ -492,7 +505,7 @@ static void arm_cmn_debugfs_init(struct arm_cmn *cmn, int id) {}
struct arm_cmn_hw_event {
struct arm_cmn_node *dn;
u64 dtm_idx[2];
u64 dtm_idx[4];
unsigned int dtc_idx;
u8 dtcs_used;
u8 num_dns;
@ -545,8 +558,7 @@ static bool arm_cmn_is_occup_event(enum cmn_model model,
enum cmn_node_type type, unsigned int id)
{
if (type == CMN_TYPE_DVM)
return (model == CMN600 && id == 0x05) ||
(model == CI700 && id == 0x0c);
return model == CMN600 ? id == 0x05 : id == 0x0c;
return type == CMN_TYPE_HNF && id == 0x0f;
}
@ -580,20 +592,25 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
struct device *dev = kobj_to_dev(kobj);
struct arm_cmn *cmn = to_cmn(dev_get_drvdata(dev));
struct arm_cmn_event_attr *eattr;
enum cmn_node_type type;
u16 eventid;
eattr = container_of(attr, typeof(*eattr), attr.attr);
if (!(eattr->model & cmn->model))
return 0;
type = eattr->type;
eventid = eattr->eventid;
/* Watchpoints aren't nodes, so avoid confusion */
if (eattr->type == CMN_TYPE_WP)
if (type == CMN_TYPE_WP)
return attr->mode;
/* Hide XP events for unused interfaces/channels */
if (eattr->type == CMN_TYPE_XP) {
unsigned int intf = (eattr->eventid >> 2) & 7;
unsigned int chan = eattr->eventid >> 5;
if (type == CMN_TYPE_XP) {
unsigned int intf = (eventid >> 2) & 7;
unsigned int chan = eventid >> 5;
if ((intf & 4) && !(cmn->ports_used & BIT(intf & 3)))
return 0;
@ -607,12 +624,29 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
}
/* Revision-specific differences */
if (cmn->model == CMN600 && cmn->rev < CMN600_R1P2) {
if (eattr->type == CMN_TYPE_HNF && eattr->eventid == 0x1b)
return 0;
if (cmn->model == CMN600) {
if (cmn->rev < CMN600_R1P3) {
if (type == CMN_TYPE_CXRA && eventid > 0x10)
return 0;
}
if (cmn->rev < CMN600_R1P2) {
if (type == CMN_TYPE_HNF && eventid == 0x1b)
return 0;
if (type == CMN_TYPE_CXRA || type == CMN_TYPE_CXHA)
return 0;
}
} else if (cmn->model == CMN650) {
if (cmn->rev < CMN650_R2P0 || cmn->rev == CMN650_R1P2) {
if (type == CMN_TYPE_HNF && eventid > 0x22)
return 0;
if (type == CMN_TYPE_SBSX && eventid == 0x17)
return 0;
if (type == CMN_TYPE_RNI && eventid > 0x10)
return 0;
}
}
if (!arm_cmn_node(cmn, eattr->type))
if (!arm_cmn_node(cmn, type))
return 0;
return attr->mode;
@ -626,6 +660,8 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
CMN_EVENT_ATTR(_model, hnf_##_name, CMN_TYPE_HNF, _event, _occup)
#define CMN_EVENT_HNI(_name, _event) \
CMN_EVENT_ATTR(CMN_ANY, hni_##_name, CMN_TYPE_HNI, _event, 0)
#define CMN_EVENT_HNP(_name, _event) \
CMN_EVENT_ATTR(CMN_ANY, hnp_##_name, CMN_TYPE_HNP, _event, 0)
#define __CMN_EVENT_XP(_name, _event) \
CMN_EVENT_ATTR(CMN_ANY, mxp_##_name, CMN_TYPE_XP, _event, 0)
#define CMN_EVENT_SBSX(_model, _name, _event) \
@ -634,6 +670,10 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
CMN_EVENT_ATTR(_model, rnid_##_name, CMN_TYPE_RNI, _event, 0)
#define CMN_EVENT_MTSX(_name, _event) \
CMN_EVENT_ATTR(CMN_ANY, mtsx_##_name, CMN_TYPE_MTSX, _event, 0)
#define CMN_EVENT_CXRA(_model, _name, _event) \
CMN_EVENT_ATTR(_model, cxra_##_name, CMN_TYPE_CXRA, _event, 0)
#define CMN_EVENT_CXHA(_name, _event) \
CMN_EVENT_ATTR(CMN_ANY, cxha_##_name, CMN_TYPE_CXHA, _event, 0)
#define CMN_EVENT_DVM(_model, _name, _event) \
_CMN_EVENT_DVM(_model, _name, _event, 0)
@ -675,20 +715,20 @@ static struct attribute *arm_cmn_event_attrs[] = {
_CMN_EVENT_DVM(CMN600, rxreq_trk_occupancy_all, 0x05, 0),
_CMN_EVENT_DVM(CMN600, rxreq_trk_occupancy_dvmop, 0x05, 1),
_CMN_EVENT_DVM(CMN600, rxreq_trk_occupancy_dvmsync, 0x05, 2),
CMN_EVENT_DVM(CI700, dvmop_tlbi, 0x01),
CMN_EVENT_DVM(CI700, dvmop_bpi, 0x02),
CMN_EVENT_DVM(CI700, dvmop_pici, 0x03),
CMN_EVENT_DVM(CI700, dvmop_vici, 0x04),
CMN_EVENT_DVM(CI700, dvmsync, 0x05),
CMN_EVENT_DVM(CI700, vmid_filtered, 0x06),
CMN_EVENT_DVM(CI700, rndop_filtered, 0x07),
CMN_EVENT_DVM(CI700, retry, 0x08),
CMN_EVENT_DVM(CI700, txsnp_flitv, 0x09),
CMN_EVENT_DVM(CI700, txsnp_stall, 0x0a),
CMN_EVENT_DVM(CI700, trkfull, 0x0b),
_CMN_EVENT_DVM(CI700, trk_occupancy_all, 0x0c, 0),
_CMN_EVENT_DVM(CI700, trk_occupancy_dvmop, 0x0c, 1),
_CMN_EVENT_DVM(CI700, trk_occupancy_dvmsync, 0x0c, 2),
CMN_EVENT_DVM(NOT_CMN600, dvmop_tlbi, 0x01),
CMN_EVENT_DVM(NOT_CMN600, dvmop_bpi, 0x02),
CMN_EVENT_DVM(NOT_CMN600, dvmop_pici, 0x03),
CMN_EVENT_DVM(NOT_CMN600, dvmop_vici, 0x04),
CMN_EVENT_DVM(NOT_CMN600, dvmsync, 0x05),
CMN_EVENT_DVM(NOT_CMN600, vmid_filtered, 0x06),
CMN_EVENT_DVM(NOT_CMN600, rndop_filtered, 0x07),
CMN_EVENT_DVM(NOT_CMN600, retry, 0x08),
CMN_EVENT_DVM(NOT_CMN600, txsnp_flitv, 0x09),
CMN_EVENT_DVM(NOT_CMN600, txsnp_stall, 0x0a),
CMN_EVENT_DVM(NOT_CMN600, trkfull, 0x0b),
_CMN_EVENT_DVM(NOT_CMN600, trk_occupancy_all, 0x0c, 0),
_CMN_EVENT_DVM(NOT_CMN600, trk_occupancy_dvmop, 0x0c, 1),
_CMN_EVENT_DVM(NOT_CMN600, trk_occupancy_dvmsync, 0x0c, 2),
CMN_EVENT_HNF(CMN_ANY, cache_miss, 0x01),
CMN_EVENT_HNF(CMN_ANY, slc_sf_cache_access, 0x02),
@ -725,9 +765,12 @@ static struct attribute *arm_cmn_event_attrs[] = {
CMN_EVENT_HNF(CMN_ANY, stash_snp_sent, 0x1d),
CMN_EVENT_HNF(CMN_ANY, stash_data_pull, 0x1e),
CMN_EVENT_HNF(CMN_ANY, snp_fwded, 0x1f),
CMN_EVENT_HNF(CI700, atomic_fwd, 0x20),
CMN_EVENT_HNF(CI700, mpam_hardlim, 0x21),
CMN_EVENT_HNF(CI700, mpam_softlim, 0x22),
CMN_EVENT_HNF(NOT_CMN600, atomic_fwd, 0x20),
CMN_EVENT_HNF(NOT_CMN600, mpam_hardlim, 0x21),
CMN_EVENT_HNF(NOT_CMN600, mpam_softlim, 0x22),
CMN_EVENT_HNF(CMN650, snp_sent_cluster, 0x23),
CMN_EVENT_HNF(CMN650, sf_imprecise_evict, 0x24),
CMN_EVENT_HNF(CMN650, sf_evict_shared_line, 0x25),
CMN_EVENT_HNI(rrt_rd_occ_cnt_ovfl, 0x20),
CMN_EVENT_HNI(rrt_wr_occ_cnt_ovfl, 0x21),
@ -749,6 +792,27 @@ static struct attribute *arm_cmn_event_attrs[] = {
CMN_EVENT_HNI(nonpcie_serialization, 0x31),
CMN_EVENT_HNI(pcie_serialization, 0x32),
/*
* HN-P events squat on top of the HN-I similarly to DVM events, except
* for being crammed into the same physical node as well. And of course
* where would the fun be if the same events were in the same order...
*/
CMN_EVENT_HNP(rrt_wr_occ_cnt_ovfl, 0x01),
CMN_EVENT_HNP(rdt_wr_occ_cnt_ovfl, 0x02),
CMN_EVENT_HNP(wdb_occ_cnt_ovfl, 0x03),
CMN_EVENT_HNP(rrt_wr_alloc, 0x04),
CMN_EVENT_HNP(rdt_wr_alloc, 0x05),
CMN_EVENT_HNP(wdb_alloc, 0x06),
CMN_EVENT_HNP(awvalid_no_awready, 0x07),
CMN_EVENT_HNP(awready_no_awvalid, 0x08),
CMN_EVENT_HNP(wvalid_no_wready, 0x09),
CMN_EVENT_HNP(rrt_rd_occ_cnt_ovfl, 0x11),
CMN_EVENT_HNP(rdt_rd_occ_cnt_ovfl, 0x12),
CMN_EVENT_HNP(rrt_rd_alloc, 0x13),
CMN_EVENT_HNP(rdt_rd_alloc, 0x14),
CMN_EVENT_HNP(arvalid_no_arready, 0x15),
CMN_EVENT_HNP(arready_no_arvalid, 0x16),
CMN_EVENT_XP(txflit_valid, 0x01),
CMN_EVENT_XP(txflit_stall, 0x02),
CMN_EVENT_XP(partial_dat_flit, 0x03),
@ -768,7 +832,7 @@ static struct attribute *arm_cmn_event_attrs[] = {
CMN_EVENT_SBSX(CMN_ANY, wdb_occ_cnt_ovfl, 0x14),
CMN_EVENT_SBSX(CMN_ANY, rd_axi_trkr_occ_cnt_ovfl, 0x15),
CMN_EVENT_SBSX(CMN_ANY, cmo_axi_trkr_occ_cnt_ovfl, 0x16),
CMN_EVENT_SBSX(CI700, rdb_occ_cnt_ovfl, 0x17),
CMN_EVENT_SBSX(NOT_CMN600, rdb_occ_cnt_ovfl, 0x17),
CMN_EVENT_SBSX(CMN_ANY, arvalid_no_arready, 0x21),
CMN_EVENT_SBSX(CMN_ANY, awvalid_no_awready, 0x22),
CMN_EVENT_SBSX(CMN_ANY, wvalid_no_wready, 0x23),
@ -795,12 +859,12 @@ static struct attribute *arm_cmn_event_attrs[] = {
CMN_EVENT_RNID(CMN600, rdb_replay, 0x12),
CMN_EVENT_RNID(CMN600, rdb_hybrid, 0x13),
CMN_EVENT_RNID(CMN600, rdb_ord, 0x14),
CMN_EVENT_RNID(CI700, padb_occ_ovfl, 0x11),
CMN_EVENT_RNID(CI700, rpdb_occ_ovfl, 0x12),
CMN_EVENT_RNID(CI700, rrt_occup_ovfl_slice1, 0x13),
CMN_EVENT_RNID(CI700, rrt_occup_ovfl_slice2, 0x14),
CMN_EVENT_RNID(CI700, rrt_occup_ovfl_slice3, 0x15),
CMN_EVENT_RNID(CI700, wrt_throttled, 0x16),
CMN_EVENT_RNID(NOT_CMN600, padb_occ_ovfl, 0x11),
CMN_EVENT_RNID(NOT_CMN600, rpdb_occ_ovfl, 0x12),
CMN_EVENT_RNID(NOT_CMN600, rrt_occup_ovfl_slice1, 0x13),
CMN_EVENT_RNID(NOT_CMN600, rrt_occup_ovfl_slice2, 0x14),
CMN_EVENT_RNID(NOT_CMN600, rrt_occup_ovfl_slice3, 0x15),
CMN_EVENT_RNID(NOT_CMN600, wrt_throttled, 0x16),
CMN_EVENT_MTSX(tc_lookup, 0x01),
CMN_EVENT_MTSX(tc_fill, 0x02),
@ -815,6 +879,42 @@ static struct attribute *arm_cmn_event_attrs[] = {
CMN_EVENT_MTSX(tcq_occ_cnt_ovfl, 0x0b),
CMN_EVENT_MTSX(tdb_occ_cnt_ovfl, 0x0c),
CMN_EVENT_CXRA(CMN_ANY, rht_occ, 0x01),
CMN_EVENT_CXRA(CMN_ANY, sht_occ, 0x02),
CMN_EVENT_CXRA(CMN_ANY, rdb_occ, 0x03),
CMN_EVENT_CXRA(CMN_ANY, wdb_occ, 0x04),
CMN_EVENT_CXRA(CMN_ANY, ssb_occ, 0x05),
CMN_EVENT_CXRA(CMN_ANY, snp_bcasts, 0x06),
CMN_EVENT_CXRA(CMN_ANY, req_chains, 0x07),
CMN_EVENT_CXRA(CMN_ANY, req_chain_avglen, 0x08),
CMN_EVENT_CXRA(CMN_ANY, chirsp_stalls, 0x09),
CMN_EVENT_CXRA(CMN_ANY, chidat_stalls, 0x0a),
CMN_EVENT_CXRA(CMN_ANY, cxreq_pcrd_stalls_link0, 0x0b),
CMN_EVENT_CXRA(CMN_ANY, cxreq_pcrd_stalls_link1, 0x0c),
CMN_EVENT_CXRA(CMN_ANY, cxreq_pcrd_stalls_link2, 0x0d),
CMN_EVENT_CXRA(CMN_ANY, cxdat_pcrd_stalls_link0, 0x0e),
CMN_EVENT_CXRA(CMN_ANY, cxdat_pcrd_stalls_link1, 0x0f),
CMN_EVENT_CXRA(CMN_ANY, cxdat_pcrd_stalls_link2, 0x10),
CMN_EVENT_CXRA(CMN_ANY, external_chirsp_stalls, 0x11),
CMN_EVENT_CXRA(CMN_ANY, external_chidat_stalls, 0x12),
CMN_EVENT_CXRA(NOT_CMN600, cxmisc_pcrd_stalls_link0, 0x13),
CMN_EVENT_CXRA(NOT_CMN600, cxmisc_pcrd_stalls_link1, 0x14),
CMN_EVENT_CXRA(NOT_CMN600, cxmisc_pcrd_stalls_link2, 0x15),
CMN_EVENT_CXHA(rddatbyp, 0x21),
CMN_EVENT_CXHA(chirsp_up_stall, 0x22),
CMN_EVENT_CXHA(chidat_up_stall, 0x23),
CMN_EVENT_CXHA(snppcrd_link0_stall, 0x24),
CMN_EVENT_CXHA(snppcrd_link1_stall, 0x25),
CMN_EVENT_CXHA(snppcrd_link2_stall, 0x26),
CMN_EVENT_CXHA(reqtrk_occ, 0x27),
CMN_EVENT_CXHA(rdb_occ, 0x28),
CMN_EVENT_CXHA(rdbyp_occ, 0x29),
CMN_EVENT_CXHA(wdb_occ, 0x2a),
CMN_EVENT_CXHA(snptrk_occ, 0x2b),
CMN_EVENT_CXHA(sdb_occ, 0x2c),
CMN_EVENT_CXHA(snphaz_occ, 0x2d),
NULL
};
@ -1652,6 +1752,16 @@ static void arm_cmn_init_node_info(struct arm_cmn *cmn, u32 offset, struct arm_c
node->type, node->logid, offset);
}
static enum cmn_node_type arm_cmn_subtype(enum cmn_node_type type)
{
switch (type) {
case CMN_TYPE_HNP:
return CMN_TYPE_HNI;
default:
return CMN_TYPE_INVALID;
}
}
static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
{
void __iomem *cfg_region;
@ -1692,8 +1802,13 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
cmn->num_dns += FIELD_GET(CMN_CI_CHILD_COUNT, reg);
}
/* Cheeky +1 to help terminate pointer-based iteration later */
dn = devm_kcalloc(cmn->dev, cmn->num_dns + 1, sizeof(*dn), GFP_KERNEL);
/*
* Some nodes effectively have two separate types, which we'll handle
* by creating one of each internally. For a (very) safe initial upper
* bound, account for double the number of non-XP nodes.
*/
dn = devm_kcalloc(cmn->dev, cmn->num_dns * 2 - cmn->num_xps,
sizeof(*dn), GFP_KERNEL);
if (!dn)
return -ENOMEM;
@ -1802,6 +1917,18 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
case CMN_TYPE_RNSAM:
case CMN_TYPE_CXLA:
break;
/*
* Split "optimised" combination nodes into separate
* types for the different event sets. Offsetting the
* base address lets us handle the second pmu_event_sel
* register via the normal mechanism later.
*/
case CMN_TYPE_HNP:
dn[1] = dn[0];
dn[0].pmu_base += CMN_HNP_PMU_EVENT_SEL;
dn[1].type = arm_cmn_subtype(dn->type);
dn += 2;
break;
/* Something has gone horribly wrong */
default:
dev_err(cmn->dev, "invalid device node type: 0x%x\n", dn->type);
@ -1810,9 +1937,10 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
}
}
/* Correct for any nodes we skipped */
/* Correct for any nodes we added or skipped */
cmn->num_dns = dn - cmn->dns;
/* Cheeky +1 to help terminate pointer-based iteration later */
sz = (void *)(dn + 1) - (void *)cmn->dns;
dn = devm_krealloc(cmn->dev, cmn->dns, sz, GFP_KERNEL);
if (dn)
@ -1970,6 +2098,7 @@ static int arm_cmn_remove(struct platform_device *pdev)
#ifdef CONFIG_OF
static const struct of_device_id arm_cmn_of_match[] = {
{ .compatible = "arm,cmn-600", .data = (void *)CMN600 },
{ .compatible = "arm,cmn-650", .data = (void *)CMN650 },
{ .compatible = "arm,ci-700", .data = (void *)CI700 },
{}
};
@ -1979,6 +2108,7 @@ MODULE_DEVICE_TABLE(of, arm_cmn_of_match);
#ifdef CONFIG_ACPI
static const struct acpi_device_id arm_cmn_acpi_match[] = {
{ "ARMHC600", CMN600 },
{ "ARMHC650", CMN650 },
{}
};
MODULE_DEVICE_TABLE(acpi, arm_cmn_acpi_match);