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Wed, 23 Apr 2025 10:11:17 GMT Received: from ap-cloud-sh02-lnx.qualcomm.com (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 23 Apr 2025 03:11:13 -0700 From: Songwei Chai To: Suzuki K Poulose , Mike Leach , James Clark , Alexander Shishkin , Andy Gross , Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: , , , , Subject: [PATCH v4 1/7] dt-bindings: arm: Add support for Coresight TGU trace Date: Wed, 23 Apr 2025 18:10:48 +0800 Message-ID: <20250423101054.954066-2-quic_songchai@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250423101054.954066-1-quic_songchai@quicinc.com> References: <20250423101054.954066-1-quic_songchai@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Authority-Analysis: v=2.4 cv=EtLSrTcA c=1 sm=1 tr=0 ts=6808bcc6 cx=c_pps a=JYp8KDb2vCoCEuGobkYCKw==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=GEpy-HfZoHoA:10 a=XR8D0OoHHMoA:10 a=gEfo2CItAAAA:8 a=COk6AnOGAAAA:8 a=N3VNWiZ0WD7Ir0aJMQYA:9 a=sptkURWiP4Gy88Gu7hUp:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-GUID: Y_O1x9GhSOrU0LsGqDAALav5iK-y4Zld X-Proofpoint-ORIG-GUID: Y_O1x9GhSOrU0LsGqDAALav5iK-y4Zld X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNDIzMDA3MCBTYWx0ZWRfX7AHllVW2Pc2T QOvgLBaIgab2hWjwYJxVALYty6yw+GvCot1Wj0dwnzdlYgCKE9yY+w3K4R/OvciTXANNiew1Eyv nTZQBWBd0UiCRA12eFrkIfa2VflaroNGoc2nmMJqYo9ESaYjW5vFiIT2jd9mQ/4Gcbt5m6Wg/cP Rb7x3JbQCxUzXIPq4EAUPTXLE8dtrc32SkPfhbP7nkwUpJ4wNlcjgluBsOY0f/JZSgRQ1jCnIFv gshq6js7EuyOkUESJt0hguWFgwW9tnb83EWBH+SunxK5jT2w5qB8nTuSjAS6WnmOTL3TUyIDdav gIVkO7QfU67LGiie2PBbd5rbBmMiZ9WW22UnM4deS8O6PttaZXl0Uf6pgNXgS2su1kdT/rMH4tT IbpQnSOBGZnZdGd/a6KAS03x54LFM+89ittGrpuEXu9f43Wcqcmy0Oi8c8qTK8BwwZ7Z2OHH X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-04-23_07,2025-04-22_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 phishscore=0 suspectscore=0 mlxscore=0 clxscore=1015 spamscore=0 mlxlogscore=999 lowpriorityscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 adultscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2504230070 The Trigger Generation Unit (TGU) is designed to detect patterns or sequences within a specific region of the System on Chip (SoC). Once configured and activated, it monitors sense inputs and can detect a pre-programmed state or sequence across clock cycles, subsequently producing a trigger. TGU configuration space offset table x-------------------------x | | | | | | Step configuration | | space layout | coresight management | x-------------x | registers | |---> | | | | | | reserve | | | | | | |-------------------------| | |-------------| | | | | priority[3] | | step[7] |<-- | |-------------| |-------------------------| | | | priority[2] | | | | | |-------------| | ... | |Steps region | | priority[1] | | | | | |-------------| |-------------------------| | | | priority[0] | | |<-- | |-------------| | step[0] |--------------------> | | |-------------------------| | condition | | | | | | control and status | x-------------x | space | | | x-------------------------x |Timer/Counter| | | x-------------x TGU Configuration in Hardware The TGU provides a step region for user configuration, similar to a flow chart. Each step region consists of three register clusters: 1.Priority Region: Sets the required signals with priority. 2.Condition Region: Defines specific requirements (e.g., signal A reaches three times) and the subsequent action once the requirement is met. 3.Timer/Counter (Optional): Provides timing or counting functionality. Add a new coresight-tgu.yaml file to describe the bindings required to define the TGU in the device trees. Signed-off-by: Songwei Chai --- .../bindings/arm/qcom,coresight-tgu.yaml | 92 +++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-tgu.yaml diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tgu.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tgu.yaml new file mode 100644 index 000000000000..3576d3871126 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tgu.yaml @@ -0,0 +1,92 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +# Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/qcom,coresight-tgu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Trigger Generation Unit - TGU + +description: | + The Trigger Generation Unit (TGU) is a Data Engine which can be utilized + to sense a plurality of signals and create a trigger into the CTI or + generate interrupts to processors. The TGU is like the trigger circuit + of a Logic Analyzer. The corresponding trigger logic can be realized by + configuring the conditions for each step after sensing the signal. + Once setup and enabled, it will observe sense inputs and based upon + the activity of those inputs, even over clock cycles, may detect a + preprogrammed state/sequence and then produce a trigger or interrupt. + + The primary use case of the TGU is to detect patterns or sequences on a + given set of signals within some region to indentify the issue in time + once there is abnormal behavior in the subsystem. + +maintainers: + - Mao Jinlong + - Sam Chai + +# Need a custom select here or 'arm,primecell' will match on lots of nodes +select: + properties: + compatible: + contains: + enum: + - qcom,coresight-tgu + required: + - compatible + +properties: + compatible: + items: + - const: qcom,coresight-tgu + - const: arm,primecell + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + items: + - const: apb_pclk + + in-ports: + $ref: /schemas/graph.yaml#/properties/ports + additionalProperties: false + + properties: + port: + description: + The port mechanism here ensures the relationship between TGU and + TPDM, as TPDM is one of the inputs for TGU. It will allow TGU to + function as TPDM's helper and enable TGU when the connected + TPDM is enabled. + $ref: /schemas/graph.yaml#/properties/port + +required: + - compatible + - reg + - clocks + - clock-names + +additionalProperties: false + +examples: + - | + tgu@10b0e000 { + compatible = "qcom,coresight-tgu", "arm,primecell"; + reg = <0x10b0e000 0x1000>; + + clocks = <&aoss_qmp>; + clock-names = "apb_pclk"; + + in-ports { + port { + tgu_in_tpdm_swao: endpoint{ + remote-endpoint = <&tpdm_swao_out_tgu>; + }; + }; + }; + }; +... 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Add priority functionality here to sort the signals into different priorities. The signal which is wanted could be configured in each step's priority node, the larger number means the higher priority and the signal with higher priority will be sensed more preferentially. Signed-off-by: Songwei Chai --- .../testing/sysfs-bus-coresight-devices-tgu | 7 + drivers/hwtracing/coresight/coresight-tgu.c | 163 ++++++++++++++++++ drivers/hwtracing/coresight/coresight-tgu.h | 112 ++++++++++++ 3 files changed, 282 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu index 741bc9fd9df5..584340976883 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu @@ -7,3 +7,10 @@ Description: Accepts only one of the 2 values - 0 or 1. 0 : disable TGU. 1 : enable TGU. + +What: /sys/bus/coresight/devices//step[0:7]_priority[0:3]/reg[0:17] +Date: February 2025 +KernelVersion 6.15 +Contact: Jinlong Mao (QUIC) , Sam Chai (QUIC) +Description: + (RW) Set/Get the sensed signal with specific step and priority for TGU. diff --git a/drivers/hwtracing/coresight/coresight-tgu.c b/drivers/hwtracing/coresight/coresight-tgu.c index a1a02602f7b3..6dbfd4c604b1 100644 --- a/drivers/hwtracing/coresight/coresight-tgu.c +++ b/drivers/hwtracing/coresight/coresight-tgu.c @@ -17,14 +17,128 @@ DEFINE_CORESIGHT_DEVLIST(tgu_devs, "tgu"); +static int calculate_array_location(struct tgu_drvdata *drvdata, + int step_index, int operation_index, + int reg_index) +{ + int ret; + + ret = operation_index * (drvdata->max_step) * + (drvdata->max_reg) + + step_index * (drvdata->max_reg) + reg_index; + + return ret; +} + +static ssize_t tgu_dataset_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct tgu_drvdata *drvdata = dev_get_drvdata(dev->parent); + struct tgu_attribute *tgu_attr = + container_of(attr, struct tgu_attribute, attr); + + return sysfs_emit(buf, "0x%x\n", + drvdata->value_table->priority[ + calculate_array_location( + drvdata, tgu_attr->step_index, + tgu_attr->operation_index, + tgu_attr->reg_num)]); +} + +static ssize_t tgu_dataset_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t size) +{ + unsigned long val; + + struct tgu_drvdata *tgu_drvdata = dev_get_drvdata(dev->parent); + struct tgu_attribute *tgu_attr = + container_of(attr, struct tgu_attribute, attr); + + if (kstrtoul(buf, 0, &val)) + return -EINVAL; + + guard(spinlock)(&tgu_drvdata->spinlock); + tgu_drvdata->value_table->priority[calculate_array_location( + tgu_drvdata, tgu_attr->step_index, tgu_attr->operation_index, + tgu_attr->reg_num)] = val; + + return size; +} + +static umode_t tgu_node_visible(struct kobject *kobject, + struct attribute *attr, + int n) +{ + struct device *dev = kobj_to_dev(kobject); + struct tgu_drvdata *drvdata = dev_get_drvdata(dev->parent); + int ret = SYSFS_GROUP_INVISIBLE; + + struct device_attribute *dev_attr = + container_of(attr, struct device_attribute, attr); + struct tgu_attribute *tgu_attr = + container_of(dev_attr, struct tgu_attribute, attr); + + if (tgu_attr->step_index < drvdata->max_step) { + ret = (tgu_attr->reg_num < drvdata->max_reg) ? + attr->mode : + 0; + } + return ret; +} + static void tgu_write_all_hw_regs(struct tgu_drvdata *drvdata) { + int i, j, k; + CS_UNLOCK(drvdata->base); + + for (i = 0; i < drvdata->max_step; i++) { + for (j = 0; j < MAX_PRIORITY; j++) { + for (k = 0; k < drvdata->max_reg; k++) { + tgu_writel(drvdata, + drvdata->value_table->priority + [calculate_array_location( + drvdata, i, j, k)], + PRIORITY_REG_STEP(i, j, k)); + } + } + } + /* Enable TGU to program the triggers */ tgu_writel(drvdata, 1, TGU_CONTROL); CS_LOCK(drvdata->base); } +static void tgu_set_reg_number(struct tgu_drvdata *drvdata) +{ + int num_sense_input; + int num_reg; + u32 devid; + + devid = readl_relaxed(drvdata->base + CORESIGHT_DEVID); + + num_sense_input = TGU_DEVID_SENSE_INPUT(devid); + if (((num_sense_input * NUMBER_BITS_EACH_SIGNAL) % LENGTH_REGISTER) == 0) + num_reg = (num_sense_input * NUMBER_BITS_EACH_SIGNAL) / LENGTH_REGISTER; + else + num_reg = ((num_sense_input * NUMBER_BITS_EACH_SIGNAL) / LENGTH_REGISTER) + 1; + drvdata->max_reg = num_reg; +} + +static void tgu_set_steps(struct tgu_drvdata *drvdata) +{ + int num_steps; + u32 devid; + + devid = readl_relaxed(drvdata->base + CORESIGHT_DEVID); + + num_steps = TGU_DEVID_STEPS(devid); + + drvdata->max_step = num_steps; +} + static int tgu_enable(struct coresight_device *csdev, enum cs_mode mode, void *data) { @@ -125,6 +239,38 @@ static const struct attribute_group tgu_common_grp = { static const struct attribute_group *tgu_attr_groups[] = { &tgu_common_grp, + PRIORITY_ATTRIBUTE_GROUP_INIT(0, 0), + PRIORITY_ATTRIBUTE_GROUP_INIT(0, 1), + PRIORITY_ATTRIBUTE_GROUP_INIT(0, 2), + PRIORITY_ATTRIBUTE_GROUP_INIT(0, 3), + PRIORITY_ATTRIBUTE_GROUP_INIT(1, 0), + PRIORITY_ATTRIBUTE_GROUP_INIT(1, 1), + PRIORITY_ATTRIBUTE_GROUP_INIT(1, 2), + PRIORITY_ATTRIBUTE_GROUP_INIT(1, 3), + PRIORITY_ATTRIBUTE_GROUP_INIT(2, 0), + PRIORITY_ATTRIBUTE_GROUP_INIT(2, 1), + PRIORITY_ATTRIBUTE_GROUP_INIT(2, 2), + PRIORITY_ATTRIBUTE_GROUP_INIT(2, 3), + PRIORITY_ATTRIBUTE_GROUP_INIT(3, 0), + PRIORITY_ATTRIBUTE_GROUP_INIT(3, 1), + PRIORITY_ATTRIBUTE_GROUP_INIT(3, 2), + PRIORITY_ATTRIBUTE_GROUP_INIT(3, 3), + PRIORITY_ATTRIBUTE_GROUP_INIT(4, 0), + PRIORITY_ATTRIBUTE_GROUP_INIT(4, 1), + PRIORITY_ATTRIBUTE_GROUP_INIT(4, 2), + PRIORITY_ATTRIBUTE_GROUP_INIT(4, 3), + PRIORITY_ATTRIBUTE_GROUP_INIT(5, 0), + PRIORITY_ATTRIBUTE_GROUP_INIT(5, 1), + PRIORITY_ATTRIBUTE_GROUP_INIT(5, 2), + PRIORITY_ATTRIBUTE_GROUP_INIT(5, 3), + PRIORITY_ATTRIBUTE_GROUP_INIT(6, 0), + PRIORITY_ATTRIBUTE_GROUP_INIT(6, 1), + PRIORITY_ATTRIBUTE_GROUP_INIT(6, 2), + PRIORITY_ATTRIBUTE_GROUP_INIT(6, 3), + PRIORITY_ATTRIBUTE_GROUP_INIT(7, 0), + PRIORITY_ATTRIBUTE_GROUP_INIT(7, 1), + PRIORITY_ATTRIBUTE_GROUP_INIT(7, 2), + PRIORITY_ATTRIBUTE_GROUP_INIT(7, 3), NULL, }; @@ -159,6 +305,23 @@ static int tgu_probe(struct amba_device *adev, const struct amba_id *id) spin_lock_init(&drvdata->spinlock); + tgu_set_reg_number(drvdata); + tgu_set_steps(drvdata); + + drvdata->value_table = + devm_kzalloc(dev, sizeof(*drvdata->value_table), GFP_KERNEL); + if (!drvdata->value_table) + return -ENOMEM; + + drvdata->value_table->priority = devm_kzalloc( + dev, + MAX_PRIORITY * drvdata->max_reg * drvdata->max_step * + sizeof(*(drvdata->value_table->priority)), + GFP_KERNEL); + + if (!drvdata->value_table->priority) + return -ENOMEM; + drvdata->enable = false; desc.type = CORESIGHT_DEV_TYPE_HELPER; desc.pdata = adev->dev.platform_data; diff --git a/drivers/hwtracing/coresight/coresight-tgu.h b/drivers/hwtracing/coresight/coresight-tgu.h index 6c849a2f78fa..f07ead505365 100644 --- a/drivers/hwtracing/coresight/coresight-tgu.h +++ b/drivers/hwtracing/coresight/coresight-tgu.h @@ -13,6 +13,112 @@ #define tgu_writel(drvdata, val, off) __raw_writel((val), drvdata->base + off) #define tgu_readl(drvdata, off) __raw_readl(drvdata->base + off) +#define TGU_DEVID_SENSE_INPUT(devid_val) ((int) BMVAL(devid_val, 10, 17)) +#define TGU_DEVID_STEPS(devid_val) ((int)BMVAL(devid_val, 3, 6)) +#define NUMBER_BITS_EACH_SIGNAL 4 +#define LENGTH_REGISTER 32 + +/* + * TGU configuration space Step configuration + * offset table space layout + * x-------------------------x$ x-------------x$ + * | |$ | |$ + * | | | reserve |$ + * | | | |$ + * |coresight management | |-------------|base+n*0x1D8+0x1F4$ + * | registe | |---> |prioroty[3] |$ + * | | | |-------------|base+n*0x1D8+0x194$ + * | | | |prioroty[2] |$ + * |-------------------------| | |-------------|base+n*0x1D8+0x134$ + * | | | |prioroty[1] |$ + * | step[7] | | |-------------|base+n*0x1D8+0xD4$ + * |-------------------------|->base+0x40+7*0x1D8 | |prioroty[0] |$ + * | | | |-------------|base+n*0x1D8+0x74$ + * | ... | | | condition |$ + * | | | | select |$ + * |-------------------------|->base+0x40+1*0x1D8 | |-------------|base+n*0x1D8+0x60$ + * | | | | condition |$ + * | step[0] |--------------------> | decode |$ + * |-------------------------|-> base+0x40 |-------------|base+n*0x1D8+0x50$ + * | | | |$ + * | Control and status space| |Timer/Counter|$ + * | space | | |$ + * x-------------------------x->base x-------------x base+n*0x1D8+0x40$ + * + */ +#define STEP_OFFSET 0x1D8 +#define PRIORITY_START_OFFSET 0x0074 +#define PRIORITY_OFFSET 0x60 +#define REG_OFFSET 0x4 + +/* Calculate compare step addresses */ +#define PRIORITY_REG_STEP(step, priority, reg)\ + (PRIORITY_START_OFFSET + PRIORITY_OFFSET * priority +\ + REG_OFFSET * reg + 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), \ + step_index, \ + type, \ + reg_num, \ + } })[0].attr.attr) + +#define STEP_PRIORITY(step_index, reg_num, priority) \ + tgu_dataset_rw(reg##reg_num, step_index, TGU_PRIORITY##priority, \ + reg_num) + +#define STEP_PRIORITY_LIST(step_index, priority) \ + {STEP_PRIORITY(step_index, 0, priority), \ + STEP_PRIORITY(step_index, 1, priority), \ + STEP_PRIORITY(step_index, 2, priority), \ + STEP_PRIORITY(step_index, 3, priority), \ + STEP_PRIORITY(step_index, 4, priority), \ + STEP_PRIORITY(step_index, 5, priority), \ + STEP_PRIORITY(step_index, 6, priority), \ + STEP_PRIORITY(step_index, 7, priority), \ + STEP_PRIORITY(step_index, 8, priority), \ + STEP_PRIORITY(step_index, 9, priority), \ + STEP_PRIORITY(step_index, 10, priority), \ + STEP_PRIORITY(step_index, 11, priority), \ + STEP_PRIORITY(step_index, 12, priority), \ + STEP_PRIORITY(step_index, 13, priority), \ + STEP_PRIORITY(step_index, 14, priority), \ + STEP_PRIORITY(step_index, 15, priority), \ + STEP_PRIORITY(step_index, 16, priority), \ + STEP_PRIORITY(step_index, 17, priority), \ + NULL \ + } + +#define PRIORITY_ATTRIBUTE_GROUP_INIT(step, priority)\ + (&(const struct attribute_group){\ + .attrs = (struct attribute*[])STEP_PRIORITY_LIST(step, priority),\ + .is_visible = tgu_node_visible,\ + .name = "step" #step "_priority" #priority \ + }) + +enum operation_index { + TGU_PRIORITY0, + TGU_PRIORITY1, + TGU_PRIORITY2, + TGU_PRIORITY3 + +}; + +/* Maximum priority that TGU supports */ +#define MAX_PRIORITY 4 + +struct tgu_attribute { + struct device_attribute attr; + u32 step_index; + enum operation_index operation_index; + u32 reg_num; +}; + +struct value_table { + unsigned int *priority; +}; + /** * struct tgu_drvdata - Data structure for a TGU (Trigger Generator Unit) * @base: Memory-mapped base address of the TGU device @@ -20,6 +126,9 @@ * @csdev: Pointer to the associated coresight device * @spinlock: Spinlock for handling concurrent access * @enable: Flag indicating whether the TGU device is enabled + * @value_table: Store given value based on relevant parameters. + * @max_reg: Maximum number of registers + * @max_step: Maximum step size * * This structure defines the data associated with a TGU device, * including its base address, device pointers, clock, spinlock for @@ -32,6 +141,9 @@ struct tgu_drvdata { struct coresight_device *csdev; spinlock_t spinlock; bool enable; + struct value_table *value_table; + int max_reg; 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Signed-off-by: Songwei Chai --- .../testing/sysfs-bus-coresight-devices-tgu | 16 ++- drivers/hwtracing/coresight/coresight-tgu.c | 134 ++++++++++++++++++ drivers/hwtracing/coresight/coresight-tgu.h | 57 +++++++- 3 files changed, 204 insertions(+), 3 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu index 5e82fc91f8f7..2843cecead55 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu @@ -27,4 +27,18 @@ Date: February 2025 KernelVersion 6.15 Contact: Jinlong Mao (QUIC) , Sam Chai (QUIC) Description: - (RW) Set/Get the next action with specific step for TGU. \ No newline at end of file + (RW) Set/Get the next action with specific step for TGU. + +What: /sys/bus/coresight/devices//step[0:7]_timer/reg[0:1] +Date: February 2025 +KernelVersion 6.15 +Contact: Jinlong Mao (QUIC) , Sam Chai (QUIC) +Description: + (RW) Set/Get the timer value with specific step for TGU. + +What: /sys/bus/coresight/devices//step[0:7]_counter/reg[0:1] +Date: February 2025 +KernelVersion 6.15 +Contact: Jinlong Mao (QUIC) , Sam Chai (QUIC) +Description: + (RW) Set/Get the counter value with specific step for TGU. diff --git a/drivers/hwtracing/coresight/coresight-tgu.c b/drivers/hwtracing/coresight/coresight-tgu.c index 41f648b9e0ee..4a58f2cb8d8c 100644 --- a/drivers/hwtracing/coresight/coresight-tgu.c +++ b/drivers/hwtracing/coresight/coresight-tgu.c @@ -39,6 +39,12 @@ static int calculate_array_location(struct tgu_drvdata *drvdata, case TGU_CONDITION_SELECT: ret = step_index * (drvdata->max_condition_select) + reg_index; break; + case TGU_COUNTER: + ret = step_index * (drvdata->max_counter) + reg_index; + break; + case TGU_TIMER: + ret = step_index * (drvdata->max_timer) + reg_index; + break; default: break; } @@ -90,6 +96,16 @@ static ssize_t tgu_dataset_show(struct device *dev, drvdata, tgu_attr->step_index, tgu_attr->operation_index, tgu_attr->reg_num)]); + case TGU_TIMER: + return sysfs_emit(buf, "0x%x\n", + drvdata->value_table->timer[calculate_array_location( + drvdata, tgu_attr->step_index, tgu_attr->operation_index, + tgu_attr->reg_num)]); + case TGU_COUNTER: + return sysfs_emit(buf, "0x%x\n", + drvdata->value_table->counter[calculate_array_location( + drvdata, tgu_attr->step_index, tgu_attr->operation_index, + tgu_attr->reg_num)]); default: break; } @@ -143,6 +159,18 @@ static ssize_t tgu_dataset_store(struct device *dev, tgu_attr->reg_num)] = val; ret = size; break; + case TGU_TIMER: + tgu_drvdata->value_table->timer[calculate_array_location( + tgu_drvdata, tgu_attr->step_index, tgu_attr->operation_index, + tgu_attr->reg_num)] = val; + ret = size; + break; + case TGU_COUNTER: + tgu_drvdata->value_table->counter[calculate_array_location( + tgu_drvdata, tgu_attr->step_index, tgu_attr->operation_index, + tgu_attr->reg_num)] = val; + ret = size; + break; default: break; } @@ -188,6 +216,24 @@ static umode_t tgu_node_visible(struct kobject *kobject, attr->mode : 0; break; + case TGU_COUNTER: + if (drvdata->max_counter == 0) + ret = SYSFS_GROUP_INVISIBLE; + else + ret = (tgu_attr->reg_num < + drvdata->max_counter) ? + attr->mode : + 0; + break; + case TGU_TIMER: + if (drvdata->max_timer == 0) + ret = SYSFS_GROUP_INVISIBLE; + else + ret = (tgu_attr->reg_num < + drvdata->max_timer) ? + attr->mode : + 0; + break; default: break; } @@ -246,6 +292,34 @@ static ssize_t tgu_write_all_hw_regs(struct tgu_drvdata *drvdata) CONDITION_SELECT_STEP(i, j)); } } + + for (i = 0; i < drvdata->max_step; i++) { + for (j = 0; j < drvdata->max_timer; j++) { + ret = check_array_location(drvdata, i, TGU_TIMER, j); + if (ret == -EINVAL) + goto exit; + + tgu_writel(drvdata, + drvdata->value_table->timer + [calculate_array_location(drvdata, i, + TGU_TIMER, j)], + TIMER_COMPARE_STEP(i, j)); + } + } + + for (i = 0; i < drvdata->max_step; i++) { + for (j = 0; j < drvdata->max_counter; j++) { + ret = check_array_location(drvdata, i, TGU_COUNTER, j); + if (ret == -EINVAL) + goto exit; + + tgu_writel(drvdata, + drvdata->value_table->counter + [calculate_array_location(drvdata, i, + TGU_COUNTER, j)], + COUNTER_COMPARE_STEP(i, j)); + } + } /* Enable TGU to program the triggers */ tgu_writel(drvdata, 1, TGU_CONTROL); exit: @@ -294,6 +368,31 @@ static void tgu_set_conditions(struct tgu_drvdata *drvdata) drvdata->max_condition_select = num_conditions + 1; } +static void tgu_set_timer_counter(struct tgu_drvdata *drvdata) +{ + int num_timers, num_counters; + u32 devid2; + + devid2 = readl_relaxed(drvdata->base + CORESIGHT_DEVID2); + + if (TGU_DEVID2_TIMER0(devid2) && TGU_DEVID2_TIMER1(devid2)) + num_timers = 2; + else if (TGU_DEVID2_TIMER0(devid2) || TGU_DEVID2_TIMER1(devid2)) + num_timers = 1; + else + num_timers = 0; + + if (TGU_DEVID2_COUNTER0(devid2) && TGU_DEVID2_COUNTER1(devid2)) + num_counters = 2; + else if (TGU_DEVID2_COUNTER0(devid2) || TGU_DEVID2_COUNTER1(devid2)) + num_counters = 1; + else + num_counters = 0; + + drvdata->max_timer = num_timers; + drvdata->max_counter = num_counters; +} + static int tgu_enable(struct coresight_device *csdev, enum cs_mode mode, void *data) { @@ -447,6 +546,22 @@ static const struct attribute_group *tgu_attr_groups[] = { CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(5), CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(6), CONDITION_SELECT_ATTRIBUTE_GROUP_INIT(7), + TIMER_ATTRIBUTE_GROUP_INIT(0), + TIMER_ATTRIBUTE_GROUP_INIT(1), + TIMER_ATTRIBUTE_GROUP_INIT(2), + TIMER_ATTRIBUTE_GROUP_INIT(3), + TIMER_ATTRIBUTE_GROUP_INIT(4), + TIMER_ATTRIBUTE_GROUP_INIT(5), + TIMER_ATTRIBUTE_GROUP_INIT(6), + TIMER_ATTRIBUTE_GROUP_INIT(7), + COUNTER_ATTRIBUTE_GROUP_INIT(0), + COUNTER_ATTRIBUTE_GROUP_INIT(1), + COUNTER_ATTRIBUTE_GROUP_INIT(2), + COUNTER_ATTRIBUTE_GROUP_INIT(3), + COUNTER_ATTRIBUTE_GROUP_INIT(4), + COUNTER_ATTRIBUTE_GROUP_INIT(5), + COUNTER_ATTRIBUTE_GROUP_INIT(6), + COUNTER_ATTRIBUTE_GROUP_INIT(7), NULL, }; @@ -484,6 +599,7 @@ static int tgu_probe(struct amba_device *adev, const struct amba_id *id) tgu_set_reg_number(drvdata); tgu_set_steps(drvdata); tgu_set_conditions(drvdata); + tgu_set_timer_counter(drvdata); drvdata->value_table = devm_kzalloc(dev, sizeof(*drvdata->value_table), GFP_KERNEL); @@ -517,6 +633,24 @@ static int tgu_probe(struct amba_device *adev, const struct amba_id *id) if (!drvdata->value_table->condition_select) return -ENOMEM; + drvdata->value_table->timer = devm_kzalloc( + dev, + drvdata->max_step * drvdata->max_timer * + sizeof(*(drvdata->value_table->timer)), + GFP_KERNEL); + + if (!drvdata->value_table->timer) + return -ENOMEM; + + drvdata->value_table->counter = devm_kzalloc( + dev, + drvdata->max_step * drvdata->max_counter * + sizeof(*(drvdata->value_table->counter)), + GFP_KERNEL); + + if (!drvdata->value_table->counter) + return -ENOMEM; + drvdata->enable = false; desc.type = CORESIGHT_DEV_TYPE_HELPER; desc.pdata = adev->dev.platform_data; diff --git a/drivers/hwtracing/coresight/coresight-tgu.h b/drivers/hwtracing/coresight/coresight-tgu.h index 214ee67d1947..be9c87ec7e3c 100644 --- a/drivers/hwtracing/coresight/coresight-tgu.h +++ b/drivers/hwtracing/coresight/coresight-tgu.h @@ -8,7 +8,7 @@ /* Register addresses */ #define TGU_CONTROL 0x0000 - +#define CORESIGHT_DEVID2 0xfc0 /* Register read/write */ #define tgu_writel(drvdata, val, off) __raw_writel((val), drvdata->base + off) #define tgu_readl(drvdata, off) __raw_readl(drvdata->base + off) @@ -16,6 +16,11 @@ #define TGU_DEVID_SENSE_INPUT(devid_val) ((int) BMVAL(devid_val, 10, 17)) #define TGU_DEVID_STEPS(devid_val) ((int)BMVAL(devid_val, 3, 6)) #define TGU_DEVID_CONDITIONS(devid_val) ((int)BMVAL(devid_val, 0, 2)) +#define TGU_DEVID2_TIMER0(devid_val) ((int)BMVAL(devid_val, 18, 23)) +#define TGU_DEVID2_TIMER1(devid_val) ((int)BMVAL(devid_val, 13, 17)) +#define TGU_DEVID2_COUNTER0(devid_val) ((int)BMVAL(devid_val, 6, 11)) +#define TGU_DEVID2_COUNTER1(devid_val) ((int)BMVAL(devid_val, 0, 5)) + #define NUMBER_BITS_EACH_SIGNAL 4 #define LENGTH_REGISTER 32 @@ -51,6 +56,8 @@ #define PRIORITY_START_OFFSET 0x0074 #define CONDITION_DECODE_OFFSET 0x0050 #define CONDITION_SELECT_OFFSET 0x0060 +#define TIMER_START_OFFSET 0x0040 +#define COUNTER_START_OFFSET 0x0048 #define PRIORITY_OFFSET 0x60 #define REG_OFFSET 0x4 @@ -62,6 +69,12 @@ #define CONDITION_DECODE_STEP(step, decode) \ (CONDITION_DECODE_OFFSET + REG_OFFSET * decode + STEP_OFFSET * step) +#define TIMER_COMPARE_STEP(step, timer) \ + (TIMER_START_OFFSET + REG_OFFSET * timer + STEP_OFFSET * step) + +#define COUNTER_COMPARE_STEP(step, counter) \ + (COUNTER_START_OFFSET + REG_OFFSET * counter + STEP_OFFSET * step) + #define CONDITION_SELECT_STEP(step, select) \ (CONDITION_SELECT_OFFSET + REG_OFFSET * select + STEP_OFFSET * step) @@ -83,6 +96,12 @@ #define STEP_SELECT(step_index, reg_num) \ tgu_dataset_rw(reg##reg_num, step_index, TGU_CONDITION_SELECT, reg_num) +#define STEP_TIMER(step_index, reg_num) \ + tgu_dataset_rw(reg##reg_num, step_index, TGU_TIMER, reg_num) + +#define STEP_COUNTER(step_index, reg_num) \ + tgu_dataset_rw(reg##reg_num, step_index, TGU_COUNTER, reg_num) + #define STEP_PRIORITY_LIST(step_index, priority) \ {STEP_PRIORITY(step_index, 0, priority), \ STEP_PRIORITY(step_index, 1, priority), \ @@ -122,6 +141,18 @@ NULL \ } +#define STEP_TIMER_LIST(n) \ + {STEP_TIMER(n, 0), \ + STEP_TIMER(n, 1), \ + NULL \ + } + +#define STEP_COUNTER_LIST(n) \ + {STEP_COUNTER(n, 0), \ + STEP_COUNTER(n, 1), \ + NULL \ + } + #define PRIORITY_ATTRIBUTE_GROUP_INIT(step, priority)\ (&(const struct attribute_group){\ .attrs = (struct attribute*[])STEP_PRIORITY_LIST(step, priority),\ @@ -143,13 +174,29 @@ .name = "step" #step "_condition_select" \ }) +#define TIMER_ATTRIBUTE_GROUP_INIT(step)\ + (&(const struct attribute_group){\ + .attrs = (struct attribute*[])STEP_TIMER_LIST(step),\ + .is_visible = tgu_node_visible,\ + .name = "step" #step "_timer" \ + }) + +#define COUNTER_ATTRIBUTE_GROUP_INIT(step)\ + (&(const struct attribute_group){\ + .attrs = (struct attribute*[])STEP_COUNTER_LIST(step),\ + .is_visible = tgu_node_visible,\ + .name = "step" #step "_counter" \ + }) + enum operation_index { TGU_PRIORITY0, TGU_PRIORITY1, TGU_PRIORITY2, TGU_PRIORITY3, TGU_CONDITION_DECODE, - TGU_CONDITION_SELECT + TGU_CONDITION_SELECT, + TGU_TIMER, + TGU_COUNTER }; /* Maximum priority that TGU supports */ @@ -166,6 +213,8 @@ struct value_table { unsigned int *priority; unsigned int *condition_decode; unsigned int *condition_select; + unsigned int *timer; + unsigned int *counter; }; /** @@ -180,6 +229,8 @@ struct value_table { * @max_step: Maximum step size * @max_condition_decode: Maximum number of condition_decode * @max_condition_select: Maximum number of condition_select + * @max_timer: Maximum number of timers + * @max_counter: Maximum number of counters * * This structure defines the data associated with a TGU device, * including its base address, device pointers, clock, spinlock for @@ -197,6 +248,8 @@ struct tgu_drvdata { int max_step; int max_condition_decode; int max_condition_select; + int max_timer; + int max_counter; }; #endif