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charset="utf-8" Add "select" node for each step to determine if another step is taken, trigger(s) are generated, counters/timers incremented/decremented, etc. Signed-off-by: Songwei Chai --- .../testing/sysfs-bus-coresight-devices-tgu | 7 +++ drivers/hwtracing/coresight/coresight-tgu.c | 51 +++++++++++++++++++ drivers/hwtracing/coresight/coresight-tgu.h | 30 +++++++++-- 3 files changed, 85 insertions(+), 3 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu b/Do= cumentation/ABI/testing/sysfs-bus-coresight-devices-tgu index e2c66d545912..8dce2b46b48a 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu @@ -21,3 +21,10 @@ KernelVersion 6.10 Contact: Jinlong Mao (QUIC) , Sam Chai (Q= UIC) Description: (RW) Set/Get the decode mode with specific step for TGU. + +What: /sys/bus/coresight/devices//step[0:7]_condition_= select/reg[0:3] +Date: August 2024 +KernelVersion 6.10 +Contact: Jinlong Mao (QUIC) , Sam Chai (Q= UIC) +Description: + (RW) Set/Get the next action with specific step for TGU. diff --git a/drivers/hwtracing/coresight/coresight-tgu.c b/drivers/hwtracin= g/coresight/coresight-tgu.c index b21283c89373..860fab854b95 100644 --- a/drivers/hwtracing/coresight/coresight-tgu.c +++ b/drivers/hwtracing/coresight/coresight-tgu.c @@ -34,6 +34,9 @@ static int calculate_array_location(struct tgu_drvdata *d= rvdata, int step_index, case TGU_CONDITION_DECODE: ret =3D step_index * (drvdata->max_condition_decode) + reg_index; break; + case TGU_CONDITION_SELECT: + ret =3D step_index * (drvdata->max_condition_select) + reg_index; + break; default: break; } @@ -62,6 +65,11 @@ static ssize_t tgu_dataset_show(struct device *dev, drvdata->value_table->condition_decode[calculate_array_location( drvdata, tgu_attr->step_index, tgu_attr->operation_index, tgu_attr->reg_num)]); + case TGU_CONDITION_SELECT: + return sysfs_emit(buf, "0x%x\n", + drvdata->value_table->condition_select[calculate_array_location( + drvdata, tgu_attr->step_index, tgu_attr->operation_index, + tgu_attr->reg_num)]); =20 } return -EINVAL; @@ -99,6 +107,12 @@ static ssize_t tgu_dataset_store(struct device *dev, tgu_attr->reg_num)] =3D val; ret =3D size; break; + case TGU_CONDITION_SELECT: + tgu_drvdata->value_table->condition_select[calculate_array_location( + tgu_drvdata, tgu_attr->step_index, tgu_attr->operation_index, + tgu_attr->reg_num)] =3D val; + ret =3D size; + break; default: break; } @@ -131,6 +145,14 @@ static umode_t tgu_node_visible(struct kobject *kobjec= t, struct attribute *attr, drvdata->max_condition_decode) ? attr->mode : 0; break; + case TGU_CONDITION_SELECT: + /* 'default' register is at the end of 'select' region */ + if (tgu_attr->reg_num =3D=3D drvdata->max_condition_select-1) + attr->name =3D "default"; + ret =3D (tgu_attr->reg_num < + drvdata->max_condition_select) ? + attr->mode : 0; + break; default: break; } @@ -168,6 +190,16 @@ static void tgu_write_all_hw_regs(struct tgu_drvdata *= drvdata) } } =20 + for (i =3D 0; i < drvdata->max_step; i++) { + for (j =3D 0; j < drvdata->max_condition_select; j++) { + tgu_writel(drvdata, + drvdata->value_table->condition_select + [calculate_array_location(drvdata, i, + TGU_CONDITION_SELECT, j)], + CONDITION_SELECT_STEP(i, j)); + } + } + /* Enable TGU to program the triggers */ tgu_writel(drvdata, 1, TGU_CONTROL); CS_LOCK(drvdata->base); @@ -318,6 +350,14 @@ static const struct attribute_group *tgu_attr_groups[]= =3D { CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(5), CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(6), CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(7), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(0), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(1), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(2), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(3), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(4), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(5), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(6), + CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(7), NULL, }; =20 @@ -368,6 +408,8 @@ static int tgu_probe(struct amba_device *adev, const st= ruct amba_id *id) return -EINVAL; =20 drvdata->max_condition_decode =3D drvdata->max_condition; + /* select region has an additional 'default' register */ + drvdata->max_condition_select =3D drvdata->max_condition + 1; =20 drvdata->value_table =3D devm_kzalloc(dev, sizeof(*drvdata->value_table), GFP_KERNEL); @@ -392,6 +434,15 @@ static int tgu_probe(struct amba_device *adev, const s= truct amba_id *id) if (!drvdata->value_table->condition_decode) return -ENOMEM; =20 + drvdata->value_table->condition_select =3D devm_kzalloc( + dev, + drvdata->max_condition_select * drvdata->max_step * + sizeof(*(drvdata->value_table->condition_select)), + GFP_KERNEL); + + if (!drvdata->value_table->condition_select) + return -ENOMEM; + drvdata->enable =3D false; desc.type =3D CORESIGHT_DEV_TYPE_HELPER; desc.pdata =3D adev->dev.platform_data; diff --git a/drivers/hwtracing/coresight/coresight-tgu.h b/drivers/hwtracin= g/coresight/coresight-tgu.h index 243a22098370..0d3b966dafc7 100644 --- a/drivers/hwtracing/coresight/coresight-tgu.h +++ b/drivers/hwtracing/coresight/coresight-tgu.h @@ -49,6 +49,9 @@ #define CONDITION_DECODE_STEP(step, decode) \ (0x0050 + 0x4 * decode + 0x1D8 * step) =20 +#define CONDITION_SELECT_STEP(step, select) \ + (0x0060 + 0x4 * select + 0x1D8 * step) + #define tgu_dataset_ro(name, step_index, type, reg_num) \ (&((struct tgu_attribute[]){ { \ __ATTR(name, 0444, tgu_dataset_show, NULL), \ @@ -72,6 +75,9 @@ #define STEP_DECODE(step_index, reg_num) \ tgu_dataset_rw(reg##reg_num, step_index, TGU_CONDITION_DECODE, reg_num) =20 +#define STEP_SELECT(step_index, reg_num) \ + tgu_dataset_rw(reg##reg_num, step_index, TGU_CONDITION_SELECT, reg_num) + #define STEP_PRIORITY_LIST(step_index, priority) \ {STEP_PRIORITY(step_index, 0, priority), \ STEP_PRIORITY(step_index, 1, priority), \ @@ -102,6 +108,15 @@ NULL \ } =20 +#define STEP_SELECT_LIST(n) \ + {STEP_SELECT(n, 0), \ + STEP_SELECT(n, 1), \ + STEP_SELECT(n, 2), \ + STEP_SELECT(n, 3), \ + STEP_SELECT(n, 4), \ + NULL \ + } + #define PRIORITY_ATTRIBUTE_GROUP_INIT(step, priority)\ (&(const struct attribute_group){\ .attrs =3D (struct attribute*[])STEP_PRIORITY_LIST(step, priority),\ @@ -116,13 +131,20 @@ .name =3D "step" #step "_condition_decode" \ }) =20 +#define CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(step)\ + (&(const struct attribute_group){\ + .attrs =3D (struct attribute*[])STEP_SELECT_LIST(step),\ + .is_visible =3D tgu_node_visible,\ + .name =3D "step" #step "_condition_select" \ + }) + enum operation_index { TGU_PRIORITY0, TGU_PRIORITY1, TGU_PRIORITY2, TGU_PRIORITY3, - TGU_CONDITION_DECODE - + TGU_CONDITION_DECODE, + TGU_CONDITION_SELECT }; =20 /* Maximum priority that TGU supports */ @@ -138,6 +160,7 @@ struct tgu_attribute { struct value_table { unsigned int *priority; unsigned int *condition_decode; + unsigned int *condition_select; }; =20 /** @@ -152,7 +175,7 @@ struct value_table { * @max_step: Maximum step size * @max_condition: Maximum number of condition * @max_condition_decode: Maximum number of condition_decode - * + * @max_condition_select: Maximum number of condition_select * This structure defines the data associated with a TGU device, including= its base * address, device pointers, clock, spinlock for synchronization, trigger = data pointers, * maximum limits for various trigger-related parameters, and enable statu= s. @@ -168,6 +191,7 @@ struct tgu_drvdata { int max_step; int max_condition; int max_condition_decode; + int max_condition_select; }; =20 #endif