From a36c0f1a99a80b9099f7b643f184cad973e3851e Mon Sep 17 00:00:00 2001
From: Yue Ma <yuem@codeaurora.org>
Date: Thu, 22 Aug 2019 13:47:17 -0700
Subject: [PATCH] qcacld-3.0: Add QMI send related APIs

These APIs can be used to send data request to firmware over QMI
as well as receive response from firmware.

Change-Id: I186d4c53e846af028b5ea75079027217af1580b4
CRs-fixed: 2517225
---
 core/pld/inc/pld_common.h |  5 +++
 core/pld/src/pld_common.c | 87 +++++++++++++++++++++++++++++++++++++++
 core/pld/src/pld_pcie.h   | 36 ++++++++++++++++
 3 files changed, 128 insertions(+)

diff --git a/core/pld/inc/pld_common.h b/core/pld/inc/pld_common.h
index f92853c481..455b6de8b7 100644
--- a/core/pld/inc/pld_common.h
+++ b/core/pld/inc/pld_common.h
@@ -643,6 +643,11 @@ int pld_is_fw_down(struct device *dev);
 void pld_block_shutdown(struct device *dev, bool status);
 int pld_force_assert_target(struct device *dev);
 int pld_collect_rddm(struct device *dev);
+int pld_qmi_send_get(struct device *dev);
+int pld_qmi_send_put(struct device *dev);
+int pld_qmi_send(struct device *dev, int type, void *cmd,
+		 int cmd_len, void *cb_ctx,
+		 int (*cb)(void *ctx, void *event, int event_len));
 bool pld_is_fw_dump_skipped(struct device *dev);
 
 /**
diff --git a/core/pld/src/pld_common.c b/core/pld/src/pld_common.c
index 20e6cb3b8c..c1fa5b5bd8 100644
--- a/core/pld/src/pld_common.c
+++ b/core/pld/src/pld_common.c
@@ -1768,6 +1768,93 @@ int pld_collect_rddm(struct device *dev)
 	}
 }
 
+/**
+ * pld_qmi_send_get() - Indicate certain data to be sent over QMI
+ * @dev: device pointer
+ *
+ * This API can be used to indicate certain data to be sent over QMI.
+ * pld_qmi_send() is expected to be called later.
+ *
+ * Return: 0 for success
+ *         Non zero failure code for errors
+ */
+int pld_qmi_send_get(struct device *dev)
+{
+	enum pld_bus_type type = pld_get_bus_type(dev);
+
+	switch (type) {
+	case PLD_BUS_TYPE_PCIE:
+		return pld_pcie_qmi_send_get(dev);
+	case PLD_BUS_TYPE_SNOC:
+	case PLD_BUS_TYPE_SDIO:
+	case PLD_BUS_TYPE_USB:
+		return 0;
+	default:
+		pr_err("Invalid device type %d\n", type);
+		return -EINVAL;
+	}
+}
+
+/**
+ * pld_qmi_send_put() - Indicate response sent over QMI has been processed
+ * @dev: device pointer
+ *
+ * This API can be used to indicate response of the data sent over QMI has
+ * been processed.
+ *
+ * Return: 0 for success
+ *         Non zero failure code for errors
+ */
+int pld_qmi_send_put(struct device *dev)
+{
+	enum pld_bus_type type = pld_get_bus_type(dev);
+
+	switch (type) {
+	case PLD_BUS_TYPE_PCIE:
+		return pld_pcie_qmi_send_put(dev);
+	case PLD_BUS_TYPE_SNOC:
+	case PLD_BUS_TYPE_SDIO:
+	case PLD_BUS_TYPE_USB:
+		return 0;
+	default:
+		pr_err("Invalid device type %d\n", type);
+		return -EINVAL;
+	}
+}
+
+/**
+ * pld_qmi_send() - Send data request over QMI
+ * @dev: device pointer
+ * @type: type of the send data operation
+ * @cmd: buffer pointer of send data request command
+ * @cmd_len: size of the command buffer
+ * @cb_ctx: context pointer if any to pass back in callback
+ * @cb: callback pointer to pass response back
+ *
+ * This API can be used to send data request over QMI.
+ *
+ * Return: 0 if data request sends successfully
+ *         Non zero failure code for errors
+ */
+int pld_qmi_send(struct device *dev, int type, void *cmd,
+		 int cmd_len, void *cb_ctx,
+		 int (*cb)(void *ctx, void *event, int event_len))
+{
+	enum pld_bus_type bus_type = pld_get_bus_type(dev);
+
+	switch (bus_type) {
+	case PLD_BUS_TYPE_PCIE:
+		return pld_pcie_qmi_send(dev, type, cmd, cmd_len, cb_ctx, cb);
+	case PLD_BUS_TYPE_SNOC:
+	case PLD_BUS_TYPE_SDIO:
+	case PLD_BUS_TYPE_USB:
+		return -EINVAL;
+	default:
+		pr_err("Invalid device type %d\n", bus_type);
+		return -EINVAL;
+	}
+}
+
 /**
  * pld_is_fw_dump_skipped() - get fw dump skipped status.
  *  The subsys ssr status help the driver to decide whether to skip
diff --git a/core/pld/src/pld_pcie.h b/core/pld/src/pld_pcie.h
index 2930881eb1..aab8196ba5 100644
--- a/core/pld/src/pld_pcie.h
+++ b/core/pld/src/pld_pcie.h
@@ -312,6 +312,24 @@ static inline int pld_pcie_collect_rddm(struct device *dev)
 	return 0;
 }
 
+static inline int pld_pcie_qmi_send_get(struct device *dev)
+{
+	return 0;
+}
+
+static inline int pld_pcie_qmi_send_put(struct device *dev)
+{
+	return 0;
+}
+
+static inline int
+pld_pcie_qmi_send(struct device *dev, int type, void *cmd,
+		  int cmd_len, void *cb_ctx,
+		  int (*cb)(void *ctx, void *event, int event_len))
+{
+	return -EINVAL;
+}
+
 static inline int pld_pcie_get_user_msi_assignment(struct device *dev,
 						   char *user_name,
 						   int *num_vectors,
@@ -357,6 +375,24 @@ static inline int pld_pcie_collect_rddm(struct device *dev)
 	return cnss_force_collect_rddm(dev);
 }
 
+static inline int pld_pcie_qmi_send_get(struct device *dev)
+{
+	return cnss_qmi_send_get(dev);
+}
+
+static inline int pld_pcie_qmi_send_put(struct device *dev)
+{
+	return cnss_qmi_send_put(dev);
+}
+
+static inline int
+pld_pcie_qmi_send(struct device *dev, int type, void *cmd,
+		  int cmd_len, void *cb_ctx,
+		  int (*cb)(void *ctx, void *event, int event_len))
+{
+	return cnss_qmi_send(dev, type, cmd, cmd_len, cb_ctx, cb);
+}
+
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
 static inline void *pld_pcie_smmu_get_domain(struct device *dev)
 {