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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c741e5663f6sm2793568a12.26.2026.03.18.06.47.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 18 Mar 2026 06:47:54 -0700 (PDT) Message-ID: Date: Wed, 18 Mar 2026 21:47:46 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v12 5/7] qcom-tgu: Add support to configure next action To: Songwei Chai , andersson@kernel.org, alexander.shishkin@linux.intel.com, mike.leach@linaro.org, konrad.dybcio@oss.qualcomm.com, suzuki.poulose@arm.com, james.clark@arm.com, krzk+dt@kernel.org, conor+dt@kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, coresight@lists.linaro.org, devicetree@vger.kernel.org, gregkh@linuxfoundation.org References: <20260317032639.2393221-1-songwei.chai@oss.qualcomm.com> <20260317032639.2393221-6-songwei.chai@oss.qualcomm.com> Content-Language: en-US From: Jie Gan In-Reply-To: <20260317032639.2393221-6-songwei.chai@oss.qualcomm.com> Content-Type: text/plain; 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> + case TGU_CONDITION_SELECT: > + return step_index * (drvdata->num_condition_select) + > + reg_index; > default: > break; > } > @@ -71,6 +74,9 @@ static ssize_t tgu_dataset_show(struct device *dev, > case TGU_CONDITION_DECODE: > return sysfs_emit(buf, "0x%x\n", > drvdata->value_table->condition_decode[index]); > + case TGU_CONDITION_SELECT: > + return sysfs_emit(buf, "0x%x\n", > + drvdata->value_table->condition_select[index]); > default: > break; > } > @@ -112,6 +118,10 @@ static ssize_t tgu_dataset_store(struct device *dev, > tgu_drvdata->value_table->condition_decode[index] = val; > ret = size; > break; > + case TGU_CONDITION_SELECT: > + tgu_drvdata->value_table->condition_select[index] = val; > + ret = size; > + break; > default: > ret = -EINVAL; > break; > @@ -146,6 +156,13 @@ static umode_t tgu_node_visible(struct kobject *kobject, > if (tgu_attr->reg_num < drvdata->num_condition_decode) > return attr->mode; > break; > + case TGU_CONDITION_SELECT: > + /* 'default' register is at the end of 'select' region */ > + if (tgu_attr->reg_num == drvdata->num_condition_select - 1) > + attr->name = "default"; > + if (tgu_attr->reg_num < drvdata->num_condition_select) > + return attr->mode; > + break; > default: > break; > } > @@ -184,6 +201,18 @@ static ssize_t tgu_write_all_hw_regs(struct tgu_drvdata *drvdata) > drvdata->base + CONDITION_DECODE_STEP(i, j)); > } > } > + > + for (i = 0; i < drvdata->num_step; i++) { > + for (j = 0; j < drvdata->num_condition_select; j++) { > + index = check_array_location(drvdata, i, > + TGU_CONDITION_SELECT, j); > + if (index == -EINVAL) > + goto exit; > + > + writel(drvdata->value_table->condition_select[index], > + drvdata->base + CONDITION_SELECT_STEP(i, j)); > + } > + } > /* Enable TGU to program the triggers */ > writel(1, drvdata->base + TGU_CONTROL); > exit: > @@ -223,6 +252,8 @@ static void tgu_set_conditions(struct tgu_drvdata *drvdata) > > devid = readl(drvdata->base + TGU_DEVID); > drvdata->num_condition_decode = TGU_DEVID_CONDITIONS(devid); > + /* select region has an additional 'default' register */ > + drvdata->num_condition_select = TGU_DEVID_CONDITIONS(devid) + 1; > } > > static int tgu_enable(struct device *dev) > @@ -356,6 +387,14 @@ static const struct attribute_group *tgu_attr_groups[] = { > 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, > }; > > @@ -363,8 +402,8 @@ static int tgu_probe(struct amba_device *adev, const struct amba_id *id) > { > struct device *dev = &adev->dev; > struct tgu_drvdata *drvdata; > - unsigned int *priority, *condition; > - size_t priority_size, condition_size; > + unsigned int *priority, *condition, *select; > + size_t priority_size, condition_size, select_size; > int ret; > > drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); > @@ -415,6 +454,16 @@ static int tgu_probe(struct amba_device *adev, const struct amba_id *id) > > drvdata->value_table->condition_decode = condition; > > + select_size = drvdata->num_condition_select * drvdata->num_step; > + > + select = devm_kcalloc(dev, select_size, > + sizeof(*(drvdata->value_table->condition_select)), > + GFP_KERNEL); > + if (!select) > + return -ENOMEM; > + > + drvdata->value_table->condition_select = select; > + > drvdata->enabled = false; > > pm_runtime_put(&adev->dev); > diff --git a/drivers/hwtracing/qcom/tgu.h b/drivers/hwtracing/qcom/tgu.h > index 987ea07bd618..ac46a2875209 100644 > --- a/drivers/hwtracing/qcom/tgu.h > +++ b/drivers/hwtracing/qcom/tgu.h > @@ -52,6 +52,7 @@ > #define STEP_OFFSET 0x1D8 > #define PRIORITY_START_OFFSET 0x0074 > #define CONDITION_DECODE_OFFSET 0x0050 > +#define CONDITION_SELECT_OFFSET 0x0060 > #define PRIORITY_OFFSET 0x60 > #define REG_OFFSET 0x4 > > @@ -63,6 +64,9 @@ > #define CONDITION_DECODE_STEP(step, decode) \ > (CONDITION_DECODE_OFFSET + REG_OFFSET * decode + STEP_OFFSET * step) > > +#define CONDITION_SELECT_STEP(step, select) \ > + (CONDITION_SELECT_OFFSET + REG_OFFSET * select + STEP_OFFSET * step) > + > #define tgu_dataset_rw(name, step_index, type, reg_num) \ > (&((struct tgu_attribute[]){ { \ > __ATTR(name, 0644, tgu_dataset_show, tgu_dataset_store), \ > @@ -76,6 +80,8 @@ > reg_num) > #define STEP_DECODE(step_index, reg_num) \ > tgu_dataset_rw(reg##reg_num, step_index, TGU_CONDITION_DECODE, reg_num) > +#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), \ > @@ -107,6 +113,15 @@ > NULL \ > } > > +#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 = (struct attribute*[])STEP_PRIORITY_LIST(step, priority),\ > @@ -121,12 +136,21 @@ > .name = "step" #step "_condition_decode" \ > }) > > +#define CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(step)\ > + (&(const struct attribute_group){\ > + .attrs = (struct attribute*[])STEP_SELECT_LIST(step),\ > + .is_visible = tgu_node_visible,\ > + .name = "step" #step "_condition_select" \ > + }) > + > + > enum operation_index { > TGU_PRIORITY0, > TGU_PRIORITY1, > TGU_PRIORITY2, > TGU_PRIORITY3, > TGU_CONDITION_DECODE, > + TGU_CONDITION_SELECT, > }; > > /* Maximum priority that TGU supports */ > @@ -142,6 +166,7 @@ struct tgu_attribute { > struct value_table { > unsigned int *priority; > unsigned int *condition_decode; > + unsigned int *condition_select; > }; > > static inline void TGU_LOCK(void __iomem *addr) > @@ -172,6 +197,7 @@ static inline void TGU_UNLOCK(void __iomem *addr) > * @num_reg: Maximum number of registers > * @num_step: Maximum step size > * @num_condition_decode: Maximum number of condition_decode > + * @num_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 > @@ -187,6 +213,7 @@ struct tgu_drvdata { > int num_reg; > int num_step; > int num_condition_decode; > + int num_condition_select; > }; > > #endif