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Message-Id: <20250422-sip_svc_upstream-v1-7-088059190f31@altera.com>
Date: Tue, 22 Apr 2025 12:07:14 +0800
From: Mahesh Rao via B4 Relay <devnull+mahesh.rao.altera.com@...nel.org>
To: Dinh Nguyen <dinguyen@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Mahesh Rao <mahesh.rao@...era.com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
Matthew Gerlach <matthew.gerlach@...era.com>
Subject: [PATCH 7/7] firmware: stratix10-svc: Add support for HWMON
temperature and voltage read command.
From: Mahesh Rao <mahesh.rao@...era.com>
Add support for HWMON commands in stratix10
Asynchronous communication
Signed-off-by: Mahesh Rao <mahesh.rao@...era.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@...era.com>
---
drivers/firmware/stratix10-svc.c | 20 +++++++++++-
include/linux/firmware/intel/stratix10-smc.h | 38 ++++++++++++++++++++++
.../linux/firmware/intel/stratix10-svc-client.h | 11 +++++++
3 files changed, 68 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index d60808cc077da6d88ca6cc1043f6da46df31ebad..4ee89980319dcde5198d7112d08708b543881f73 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -40,7 +40,7 @@
* timeout is set to 30 seconds (30 * 1000) at Intel Stratix10 SoC.
*/
#define SVC_NUM_DATA_IN_FIFO 32
-#define SVC_NUM_CHANNEL 3
+#define SVC_NUM_CHANNEL 4
#define FPGA_CONFIG_DATA_CLAIM_TIMEOUT_MS 200
#define FPGA_CONFIG_STATUS_TIMEOUT_SEC 30
#define BYTE_TO_WORD_SIZE 4
@@ -1429,6 +1429,14 @@ int stratix10_svc_async_send(struct stratix10_svc_chan *chan, void *msg, void **
STRATIX10_SIP_SMC_SET_TRANSACTIONID_X1(handle->transaction_id);
switch (p_msg->command) {
+ case COMMAND_HWMON_READTEMP:
+ args.a0 = INTEL_SIP_SMC_ASYNC_HWMON_READTEMP;
+ args.a2 = p_msg->arg[0];
+ break;
+ case COMMAND_HWMON_READVOLT:
+ args.a0 = INTEL_SIP_SMC_ASYNC_HWMON_READVOLT;
+ args.a2 = p_msg->arg[0];
+ break;
default:
dev_err(ctrl->dev, "Invalid command ,%d\n", p_msg->command);
ret = -EINVAL;
@@ -1508,6 +1516,11 @@ static int stratix10_svc_async_prepare_response(struct stratix10_svc_chan *chan,
data->status = STRATIX10_GET_SDM_STATUS_CODE(handle->res.a1);
switch (p_msg->command) {
+ case COMMAND_HWMON_READTEMP:
+ case COMMAND_HWMON_READVOLT:
+ data->kaddr1 = (void *)&handle->res.a2;
+ break;
+
default:
dev_alert(ctrl->dev, "Invalid command\n ,%d", p_msg->command);
return -ENOENT;
@@ -2136,6 +2149,11 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev)
chans[2].name = SVC_CLIENT_FCS;
spin_lock_init(&chans[2].lock);
+ chans[3].scl = NULL;
+ chans[3].ctrl = controller;
+ chans[3].name = SVC_CLIENT_HWMON;
+ spin_lock_init(&chans[3].lock);
+
list_add_tail(&controller->node, &svc_ctrl);
platform_set_drvdata(pdev, controller);
diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h
index ee00f17ea9f6c7a1114fb617d4d6393f2c27e2a9..78055b0234cee990515f01a509a75e1c8142c68b 100644
--- a/include/linux/firmware/intel/stratix10-smc.h
+++ b/include/linux/firmware/intel/stratix10-smc.h
@@ -625,6 +625,44 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
#define INTEL_SIP_SMC_FCS_GET_PROVISION_DATA \
INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FCS_GET_PROVISION_DATA)
+/**
+ * Request INTEL_SIP_SMC_ASYNC_HWMON_READTEMP
+ * Async call to request temperature
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_ASYNC_FUNCID_HWMON_READTEMP
+ * a1 transaction job id
+ * a2 Temperature Channel
+ * a3-a17 not used
+ *
+ * Return status
+ * a0 INTEL_SIP_SMC_STATUS_OK ,INTEL_SIP_SMC_STATUS_REJECTED
+ * or INTEL_SIP_SMC_STATUS_BUSY
+ * a1-a17 not used
+ */
+#define INTEL_SIP_SMC_ASYNC_FUNCID_HWMON_READTEMP (0xE8)
+#define INTEL_SIP_SMC_ASYNC_HWMON_READTEMP \
+ INTEL_SIP_SMC_ASYNC_VAL(INTEL_SIP_SMC_ASYNC_FUNCID_HWMON_READTEMP)
+
+/**
+ * Request INTEL_SIP_SMC_ASYNC_HWMON_READVOLT
+ * Async call to request voltage
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_ASYNC_HWMON_READVOLT
+ * a1 transaction job id
+ * a2 Voltage Channel
+ * a3-a17 not used
+ *
+ * Return status
+ * a0 INTEL_SIP_SMC_STATUS_OK ,INTEL_SIP_SMC_STATUS_REJECTED
+ * or INTEL_SIP_SMC_STATUS_BUSY
+ * a1-17 not used
+ */
+#define INTEL_SIP_SMC_ASYNC_FUNCID_HWMON_READVOLT (0xE9)
+#define INTEL_SIP_SMC_ASYNC_HWMON_READVOLT \
+ INTEL_SIP_SMC_ASYNC_VAL(INTEL_SIP_SMC_ASYNC_FUNCID_HWMON_READVOLT)
+
/**
* Request INTEL_SIP_SMC_ASYNC_POLL
* Async call used by service driver at EL1 to query mailbox response from SDM.
diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h
index bda837815bae35fbf4df6280dba5bc02d747426e..032e780c7b545e2e238f9dea712779d979e491d6 100644
--- a/include/linux/firmware/intel/stratix10-svc-client.h
+++ b/include/linux/firmware/intel/stratix10-svc-client.h
@@ -16,6 +16,7 @@
#define SVC_CLIENT_FPGA "fpga"
#define SVC_CLIENT_RSU "rsu"
#define SVC_CLIENT_FCS "fcs"
+#define SVC_CLIENT_HWMON "hwmon"
/*
* Status of the sent command, in bit number
@@ -71,6 +72,7 @@
#define SVC_RSU_REQUEST_TIMEOUT_MS 300
#define SVC_FCS_REQUEST_TIMEOUT_MS 2000
#define SVC_COMPLETED_TIMEOUT_MS 30000
+#define SVC_HWMON_REQUEST_TIMEOUT_MS 2000
struct stratix10_svc_chan;
@@ -142,6 +144,12 @@ struct stratix10_svc_chan;
*
* @COMMAND_FCS_RANDOM_NUMBER_GEN: generate a random number, return status
* is SVC_STATUS_OK, SVC_STATUS_ERROR
+ *
+ * @COMMAND_HWMON_READTEMP: read temperature from the hardware sensor connected
+ * to the FPGA, return status is SVC_STATUS_OK, SVC_STATUS_ERROR
+ *
+ * @COMMAND_HWMON_READVOLT: read voltage from the hardware sensor connected
+ * to the FPGA, return status is SVC_STATUS_OK, SVC_STATUS_ERROR
*/
enum stratix10_svc_command_code {
/* for FPGA */
@@ -172,6 +180,9 @@ enum stratix10_svc_command_code {
COMMAND_MBOX_SEND_CMD = 100,
/* Non-mailbox SMC Call */
COMMAND_SMC_SVC_VERSION = 200,
+ /* for HWMON */
+ COMMAND_HWMON_READTEMP,
+ COMMAND_HWMON_READVOLT
};
/**
--
2.35.3
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