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Message-ID: <20230521222852.5740-9-quic_mmanikan@quicinc.com>
Date:   Mon, 22 May 2023 03:58:47 +0530
From:   Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <jassisinghbrar@...il.com>, <mathieu.poirier@...aro.org>,
        <mturquette@...libre.com>, <sboyd@...nel.org>,
        <quic_eberman@...cinc.com>, <quic_mojha@...cinc.com>,
        <kvalo@...nel.org>, <quic_mmanikan@...cinc.com>,
        <loic.poulain@...aro.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-remoteproc@...r.kernel.org>, <linux-clk@...r.kernel.org>
CC:     <quic_srichara@...cinc.com>, <quic_sjaganat@...cinc.com>,
        <quic_kathirav@...cinc.com>, <quic_anusha@...cinc.com>,
        <quic_poovendh@...cinc.com>, <quic_varada@...cinc.com>,
        <quic_devipriy@...cinc.com>
Subject: [PATCH V2 08/13] firmware: qcom_scm: ipq5018: Add WCSS AHB pd support

Add support to power up, down & load userpd firmware.

Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
---
Changes in V2:
	- This patch is generated by Strip off SCM code changes from here
	  https://lore.kernel.org/linux-arm-msm/1678164097-13247-9-git-send-email-quic_mmanikan@quicinc.com/

 drivers/firmware/qcom_scm.c            | 114 +++++++++++++++++++++++++
 drivers/firmware/qcom_scm.h            |   6 ++
 include/linux/firmware/qcom/qcom_scm.h |   3 +
 3 files changed, 123 insertions(+)

diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index fde33acd46b7..c617e9e671ec 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -643,6 +643,120 @@ int qcom_scm_pas_shutdown(u32 peripheral)
 }
 EXPORT_SYMBOL(qcom_scm_pas_shutdown);

+/**
+ * qti_scm_int_radio_powerup - Bring up WCSS AHB userpd
+ *
+ * @peripheral:	peripheral id
+ *
+ * Return 0 on success.
+ */
+int qti_scm_int_radio_powerup(u32 peripheral)
+{
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_PD_LOAD_SVC_ID,
+		.cmd = QCOM_SCM_INT_RAD_PWR_UP_CMD_ID,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = peripheral,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	ret = qcom_scm_clk_enable();
+	if (ret)
+		return ret;
+
+	ret = qcom_scm_bw_enable();
+	if (ret)
+		return ret;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+	qcom_scm_bw_disable();
+	qcom_scm_clk_disable();
+
+	return ret ? : res.result[0];
+}
+EXPORT_SYMBOL(qti_scm_int_radio_powerup);
+
+/**
+ * qti_scm_int_radio_powerdown() - Shut down WCSS AHB userpd
+ *
+ * @peripheral: peripheral id
+ *
+ * Returns 0 on success.
+ */
+int qti_scm_int_radio_powerdown(u32 peripheral)
+{
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_PD_LOAD_SVC_ID,
+		.cmd = QCOM_SCM_INT_RAD_PWR_DN_CMD_ID,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = peripheral,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	ret = qcom_scm_clk_enable();
+	if (ret)
+		return ret;
+
+	ret = qcom_scm_bw_enable();
+	if (ret)
+		return ret;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+	qcom_scm_bw_disable();
+	qcom_scm_clk_disable();
+
+	return ret ? : res.result[0];
+}
+EXPORT_SYMBOL(qti_scm_int_radio_powerdown);
+
+/**
+ * qti_scm_pdseg_memcpy_v2() - copy userpd PIL segments data to dma blocks
+ *
+ * @peripheral:		peripheral id
+ * @phno:		program header no
+ * @dma:		handle of dma region
+ * @seg_cnt:		no of dma blocks
+ *
+ * Returns 0 if trustzone successfully loads userpd PIL segments from dma
+ * blocks to DDR
+ */
+int qti_scm_pdseg_memcpy_v2(u32 peripheral, int phno, dma_addr_t dma,
+			    int seg_cnt)
+{
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_PD_LOAD_SVC_ID,
+		.cmd = QCOM_SCM_PD_LOAD_V2_CMD_ID,
+		.arginfo = QCOM_SCM_ARGS(4, QCOM_SCM_VAL, QCOM_SCM_VAL,
+						QCOM_SCM_RW, QCOM_SCM_VAL),
+		.args[0] = peripheral,
+		.args[1] = phno,
+		.args[2] = dma,
+		.args[3] = seg_cnt,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	ret = qcom_scm_clk_enable();
+	if (ret)
+		return ret;
+
+	ret = qcom_scm_bw_enable();
+	if (ret)
+		return ret;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+	qcom_scm_bw_disable();
+	qcom_scm_clk_disable();
+
+	return ret ? : res.result[0];
+}
+EXPORT_SYMBOL(qti_scm_pdseg_memcpy_v2);
+
 /**
  * qcom_scm_pas_supported() - Check if the peripheral authentication service is
  *			      available for the given peripherial
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index e6e512bd57d1..99e3ab2f1986 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -132,6 +132,12 @@ extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
 #define QCOM_SCM_SMMU_CONFIG_ERRATA1		0x03
 #define QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL	0x02

+#define QCOM_SCM_PD_LOAD_SVC_ID			0x2
+#define QCOM_SCM_PD_LOAD_CMD_ID			0x16
+#define QCOM_SCM_PD_LOAD_V2_CMD_ID		0x19
+#define QCOM_SCM_INT_RAD_PWR_UP_CMD_ID		0x17
+#define QCOM_SCM_INT_RAD_PWR_DN_CMD_ID		0x18
+
 #define QCOM_SCM_SVC_WAITQ			0x24
 #define QCOM_SCM_WAITQ_RESUME			0x02
 #define QCOM_SCM_WAITQ_GET_WQ_CTX		0x03
diff --git a/include/linux/firmware/qcom/qcom_scm.h b/include/linux/firmware/qcom/qcom_scm.h
index 250ea4efb7cb..488d6eccb5a4 100644
--- a/include/linux/firmware/qcom/qcom_scm.h
+++ b/include/linux/firmware/qcom/qcom_scm.h
@@ -81,6 +81,9 @@ extern int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
 extern int qcom_scm_pas_auth_and_reset(u32 peripheral);
 extern int qcom_scm_pas_shutdown(u32 peripheral);
 extern bool qcom_scm_pas_supported(u32 peripheral);
+int qti_scm_int_radio_powerup(u32 peripheral);
+int qti_scm_int_radio_powerdown(u32 peripheral);
+int qti_scm_pdseg_memcpy_v2(u32 peripheral, int phno, dma_addr_t dma, int seg_cnt);

 extern int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val);
 extern int qcom_scm_io_writel(phys_addr_t addr, unsigned int val);
--
2.17.1

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