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-rw-r--r--drivers/perf/arm-cmn.c145
1 files changed, 93 insertions, 52 deletions
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c
index 89a685a09d84..4a1dc4b527f6 100644
--- a/drivers/perf/arm-cmn.c
+++ b/drivers/perf/arm-cmn.c
@@ -44,8 +44,11 @@
#define CMN_MAX_DTMS (CMN_MAX_XPS + (CMN_MAX_DIMENSION - 1) * 4)
/* The CFG node has various info besides the discovery tree */
-#define CMN_CFGM_PERIPH_ID_2 0x0010
-#define CMN_CFGM_PID2_REVISION GENMASK(7, 4)
+#define CMN_CFGM_PERIPH_ID_01 0x0008
+#define CMN_CFGM_PID0_PART_0 GENMASK_ULL(7, 0)
+#define CMN_CFGM_PID1_PART_1 GENMASK_ULL(35, 32)
+#define CMN_CFGM_PERIPH_ID_23 0x0010
+#define CMN_CFGM_PID2_REVISION GENMASK_ULL(7, 4)
#define CMN_CFGM_INFO_GLOBAL 0x900
#define CMN_INFO_MULTIPLE_DTM_EN BIT_ULL(63)
@@ -186,6 +189,7 @@
#define CMN_WP_DOWN 2
+/* Internal values for encoding event support */
enum cmn_model {
CMN600 = 1,
CMN650 = 2,
@@ -197,26 +201,34 @@ enum cmn_model {
CMN_650ON = CMN650 | CMN700,
};
+/* Actual part numbers and revision IDs defined by the hardware */
+enum cmn_part {
+ PART_CMN600 = 0x434,
+ PART_CMN650 = 0x436,
+ PART_CMN700 = 0x43c,
+ PART_CI700 = 0x43a,
+};
+
/* CMN-600 r0px shouldn't exist in silicon, thankfully */
enum cmn_revision {
- CMN600_R1P0,
- CMN600_R1P1,
- CMN600_R1P2,
- CMN600_R1P3,
- CMN600_R2P0,
- CMN600_R3P0,
- CMN600_R3P1,
- CMN650_R0P0 = 0,
- CMN650_R1P0,
- CMN650_R1P1,
- CMN650_R2P0,
- CMN650_R1P2,
- CMN700_R0P0 = 0,
- CMN700_R1P0,
- CMN700_R2P0,
- CI700_R0P0 = 0,
- CI700_R1P0,
- CI700_R2P0,
+ REV_CMN600_R1P0,
+ REV_CMN600_R1P1,
+ REV_CMN600_R1P2,
+ REV_CMN600_R1P3,
+ REV_CMN600_R2P0,
+ REV_CMN600_R3P0,
+ REV_CMN600_R3P1,
+ REV_CMN650_R0P0 = 0,
+ REV_CMN650_R1P0,
+ REV_CMN650_R1P1,
+ REV_CMN650_R2P0,
+ REV_CMN650_R1P2,
+ REV_CMN700_R0P0 = 0,
+ REV_CMN700_R1P0,
+ REV_CMN700_R2P0,
+ REV_CI700_R0P0 = 0,
+ REV_CI700_R1P0,
+ REV_CI700_R2P0,
};
enum cmn_node_type {
@@ -306,7 +318,7 @@ struct arm_cmn {
unsigned int state;
enum cmn_revision rev;
- enum cmn_model model;
+ enum cmn_part part;
u8 mesh_x;
u8 mesh_y;
u16 num_xps;
@@ -394,19 +406,35 @@ static struct arm_cmn_node *arm_cmn_node(const struct arm_cmn *cmn,
return NULL;
}
+static enum cmn_model arm_cmn_model(const struct arm_cmn *cmn)
+{
+ switch (cmn->part) {
+ case PART_CMN600:
+ return CMN600;
+ case PART_CMN650:
+ return CMN650;
+ case PART_CMN700:
+ return CMN700;
+ case PART_CI700:
+ return CI700;
+ default:
+ return 0;
+ };
+}
+
static u32 arm_cmn_device_connect_info(const struct arm_cmn *cmn,
const struct arm_cmn_node *xp, int port)
{
int offset = CMN_MXP__CONNECT_INFO(port);
if (port >= 2) {
- if (cmn->model & (CMN600 | CMN650))
+ if (cmn->part == PART_CMN600 || cmn->part == PART_CMN650)
return 0;
/*
* CI-700 may have extra ports, but still has the
* mesh_port_connect_info registers in the way.
*/
- if (cmn->model == CI700)
+ if (cmn->part == PART_CI700)
offset += CI700_CONNECT_INFO_P2_5_OFFSET;
}
@@ -640,7 +668,7 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
eattr = container_of(attr, typeof(*eattr), attr.attr);
- if (!(eattr->model & cmn->model))
+ if (!(eattr->model & arm_cmn_model(cmn)))
return 0;
type = eattr->type;
@@ -658,7 +686,7 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
if ((intf & 4) && !(cmn->ports_used & BIT(intf & 3)))
return 0;
- if (chan == 4 && cmn->model == CMN600)
+ if (chan == 4 && cmn->part == PART_CMN600)
return 0;
if ((chan == 5 && cmn->rsp_vc_num < 2) ||
@@ -669,19 +697,19 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
}
/* Revision-specific differences */
- if (cmn->model == CMN600) {
- if (cmn->rev < CMN600_R1P3) {
+ if (cmn->part == PART_CMN600) {
+ if (cmn->rev < REV_CMN600_R1P3) {
if (type == CMN_TYPE_CXRA && eventid > 0x10)
return 0;
}
- if (cmn->rev < CMN600_R1P2) {
+ if (cmn->rev < 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) {
+ } else if (cmn->part == PART_CMN650) {
+ if (cmn->rev < REV_CMN650_R2P0 || cmn->rev == REV_CMN650_R1P2) {
if (type == CMN_TYPE_HNF && eventid > 0x22)
return 0;
if (type == CMN_TYPE_SBSX && eventid == 0x17)
@@ -689,8 +717,8 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
if (type == CMN_TYPE_RNI && eventid > 0x10)
return 0;
}
- } else if (cmn->model == CMN700) {
- if (cmn->rev < CMN700_R2P0) {
+ } else if (cmn->part == PART_CMN700) {
+ if (cmn->rev < REV_CMN700_R2P0) {
if (type == CMN_TYPE_HNF && eventid > 0x2c)
return 0;
if (type == CMN_TYPE_CCHA && eventid > 0x74)
@@ -698,7 +726,7 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
if (type == CMN_TYPE_CCLA && eventid > 0x27)
return 0;
}
- if (cmn->rev < CMN700_R1P0) {
+ if (cmn->rev < REV_CMN700_R1P0) {
if (type == CMN_TYPE_HNF && eventid > 0x2b)
return 0;
}
@@ -1200,7 +1228,7 @@ static u32 arm_cmn_wp_config(struct perf_event *event)
u32 grp = CMN_EVENT_WP_GRP(event);
u32 exc = CMN_EVENT_WP_EXCLUSIVE(event);
u32 combine = CMN_EVENT_WP_COMBINE(event);
- bool is_cmn600 = to_cmn(event->pmu)->model == CMN600;
+ bool is_cmn600 = to_cmn(event->pmu)->part == PART_CMN600;
config = FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_DEV_SEL, dev) |
FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_CHN_SEL, chn) |
@@ -1520,14 +1548,14 @@ done:
return ret;
}
-static enum cmn_filter_select arm_cmn_filter_sel(enum cmn_model model,
+static enum cmn_filter_select arm_cmn_filter_sel(const struct arm_cmn *cmn,
enum cmn_node_type type,
unsigned int eventid)
{
struct arm_cmn_event_attr *e;
- int i;
+ enum cmn_model model = arm_cmn_model(cmn);
- for (i = 0; i < ARRAY_SIZE(arm_cmn_event_attrs) - 1; i++) {
+ for (int i = 0; i < ARRAY_SIZE(arm_cmn_event_attrs) - 1; i++) {
e = container_of(arm_cmn_event_attrs[i], typeof(*e), attr.attr);
if (e->model & model && e->type == type && e->eventid == eventid)
return e->fsel;
@@ -1570,12 +1598,12 @@ static int arm_cmn_event_init(struct perf_event *event)
/* ...but the DTM may depend on which port we're watching */
if (cmn->multi_dtm)
hw->dtm_offset = CMN_EVENT_WP_DEV_SEL(event) / 2;
- } else if (type == CMN_TYPE_XP && cmn->model == CMN700) {
+ } else if (type == CMN_TYPE_XP && cmn->part == PART_CMN700) {
hw->wide_sel = true;
}
/* This is sufficiently annoying to recalculate, so cache it */
- hw->filter_sel = arm_cmn_filter_sel(cmn->model, type, eventid);
+ hw->filter_sel = arm_cmn_filter_sel(cmn, type, eventid);
bynodeid = CMN_EVENT_BYNODEID(event);
nodeid = CMN_EVENT_NODEID(event);
@@ -2007,6 +2035,7 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
void __iomem *cfg_region;
struct arm_cmn_node cfg, *dn;
struct arm_cmn_dtm *dtm;
+ enum cmn_part part;
u16 child_count, child_poff;
u32 xp_offset[CMN_MAX_XPS];
u64 reg;
@@ -2018,7 +2047,19 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
return -ENODEV;
cfg_region = cmn->base + rgn_offset;
- reg = readl_relaxed(cfg_region + CMN_CFGM_PERIPH_ID_2);
+
+ reg = readq_relaxed(cfg_region + CMN_CFGM_PERIPH_ID_01);
+ part = FIELD_GET(CMN_CFGM_PID0_PART_0, reg);
+ part |= FIELD_GET(CMN_CFGM_PID1_PART_1, reg) << 8;
+ if (cmn->part && cmn->part != part)
+ dev_warn(cmn->dev,
+ "Firmware binding mismatch: expected part number 0x%x, found 0x%x\n",
+ cmn->part, part);
+ cmn->part = part;
+ if (!arm_cmn_model(cmn))
+ dev_warn(cmn->dev, "Unknown part number: 0x%x\n", part);
+
+ reg = readl_relaxed(cfg_region + CMN_CFGM_PERIPH_ID_23);
cmn->rev = FIELD_GET(CMN_CFGM_PID2_REVISION, reg);
reg = readq_relaxed(cfg_region + CMN_CFGM_INFO_GLOBAL);
@@ -2082,7 +2123,7 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
if (xp->id == (1 << 3))
cmn->mesh_x = xp->logid;
- if (cmn->model == CMN600)
+ if (cmn->part == PART_CMN600)
xp->dtc = 0xf;
else
xp->dtc = 1 << readl_relaxed(xp_region + CMN_DTM_UNIT_INFO);
@@ -2202,7 +2243,7 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
if (cmn->num_xps == 1)
dev_warn(cmn->dev, "1x1 config not fully supported, translate XP events manually\n");
- dev_dbg(cmn->dev, "model %d, periph_id_2 revision %d\n", cmn->model, cmn->rev);
+ dev_dbg(cmn->dev, "periph_id part 0x%03x revision %d\n", cmn->part, cmn->rev);
reg = cmn->ports_used;
dev_dbg(cmn->dev, "mesh %dx%d, ID width %d, ports %6pbl%s\n",
cmn->mesh_x, cmn->mesh_y, arm_cmn_xyidbits(cmn), &reg,
@@ -2257,17 +2298,17 @@ static int arm_cmn_probe(struct platform_device *pdev)
return -ENOMEM;
cmn->dev = &pdev->dev;
- cmn->model = (unsigned long)device_get_match_data(cmn->dev);
+ cmn->part = (unsigned long)device_get_match_data(cmn->dev);
platform_set_drvdata(pdev, cmn);
- if (cmn->model == CMN600 && has_acpi_companion(cmn->dev)) {
+ if (cmn->part == PART_CMN600 && has_acpi_companion(cmn->dev)) {
rootnode = arm_cmn600_acpi_probe(pdev, cmn);
} else {
rootnode = 0;
cmn->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(cmn->base))
return PTR_ERR(cmn->base);
- if (cmn->model == CMN600)
+ if (cmn->part == PART_CMN600)
rootnode = arm_cmn600_of_probe(pdev->dev.of_node);
}
if (rootnode < 0)
@@ -2336,10 +2377,10 @@ 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,cmn-700", .data = (void *)CMN700 },
- { .compatible = "arm,ci-700", .data = (void *)CI700 },
+ { .compatible = "arm,cmn-600", .data = (void *)PART_CMN600 },
+ { .compatible = "arm,cmn-650" },
+ { .compatible = "arm,cmn-700" },
+ { .compatible = "arm,ci-700" },
{}
};
MODULE_DEVICE_TABLE(of, arm_cmn_of_match);
@@ -2347,9 +2388,9 @@ 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 },
- { "ARMHC700", CMN700 },
+ { "ARMHC600", PART_CMN600 },
+ { "ARMHC650" },
+ { "ARMHC700" },
{}
};
MODULE_DEVICE_TABLE(acpi, arm_cmn_acpi_match);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-29 05:57:10 +0000