Merge tag '20210927135559.738-6-srinivas.kandagatla@linaro.org' into drivers-for-5.16

v5.15-rc1 + 20210927135559.738-[23456]-srinivas.kandagatla@linaro.org

This immutable branch is based on v5.15-rc1 and contains the following
patches extending the existig APR driver to also implement GPR:
20210927135559.738-2-srinivas.kandagatla@linaro.org
20210927135559.738-3-srinivas.kandagatla@linaro.org
20210927135559.738-4-srinivas.kandagatla@linaro.org
20210927135559.738-5-srinivas.kandagatla@linaro.org
20210927135559.738-6-srinivas.kandagatla@linaro.org

1 files changed, 69 insertions, 1 deletions

diff --git a/include/linux/soc/qcom/apr.h b/include/linux/soc/qcom/apr.h
index 137f9f2ac4c3..23c5b30f3511 100644
--- a/include/linux/soc/qcom/apr.h
+++ b/include/linux/soc/qcom/apr.h
@@ -7,6 +7,7 @@
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 #include <dt-bindings/soc/qcom,apr.h>
+#include <dt-bindings/soc/qcom,gpr.h>
 
 extern struct bus_type aprbus;
 
@@ -75,10 +76,65 @@ struct apr_resp_pkt {
 	int payload_size;
 };
 
+struct gpr_hdr {
+	uint32_t version:4;
+	uint32_t hdr_size:4;
+	uint32_t pkt_size:24;
+	uint32_t dest_domain:8;
+	uint32_t src_domain:8;
+	uint32_t reserved:16;
+	uint32_t src_port;
+	uint32_t dest_port;
+	uint32_t token;
+	uint32_t opcode;
+} __packed;
+
+struct gpr_pkt {
+	struct gpr_hdr hdr;
+	uint32_t payload[];
+};
+
+struct gpr_resp_pkt {
+	struct gpr_hdr hdr;
+	void *payload;
+	int payload_size;
+};
+
+#define GPR_HDR_SIZE			sizeof(struct gpr_hdr)
+#define GPR_PKT_VER			0x0
+#define GPR_PKT_HEADER_WORD_SIZE	((sizeof(struct gpr_pkt) + 3) >> 2)
+#define GPR_PKT_HEADER_BYTE_SIZE	(GPR_PKT_HEADER_WORD_SIZE << 2)
+
+#define GPR_BASIC_RSP_RESULT		0x02001005
+
+struct gpr_ibasic_rsp_result_t {
+	uint32_t opcode;
+	uint32_t status;
+};
+
+#define GPR_BASIC_EVT_ACCEPTED		0x02001006
+
+struct gpr_ibasic_rsp_accepted_t {
+	uint32_t opcode;
+};
+
 /* Bits 0 to 15 -- Minor version,  Bits 16 to 31 -- Major version */
 #define APR_SVC_MAJOR_VERSION(v)	((v >> 16) & 0xFF)
 #define APR_SVC_MINOR_VERSION(v)	(v & 0xFF)
 
+typedef int (*gpr_port_cb) (struct gpr_resp_pkt *d, void *priv, int op);
+struct packet_router;
+struct pkt_router_svc {
+	struct device *dev;
+	gpr_port_cb callback;
+	struct packet_router *pr;
+	spinlock_t lock;
+	int id;
+	void *priv;
+};
+
+typedef struct pkt_router_svc gpr_port_t;
+
 struct apr_device {
 	struct device	dev;
 	uint16_t	svc_id;
@@ -86,21 +142,26 @@ struct apr_device {
 	uint32_t	version;
 	char name[APR_NAME_SIZE];
 	const char *service_path;
-	spinlock_t	lock;
+	struct pkt_router_svc svc;
 	struct list_head node;
 };
 
+typedef struct apr_device gpr_device_t;
+
 #define to_apr_device(d) container_of(d, struct apr_device, dev)
+#define svc_to_apr_device(d) container_of(d, struct apr_device, svc)
 
 struct apr_driver {
 	int	(*probe)(struct apr_device *sl);
 	int	(*remove)(struct apr_device *sl);
 	int	(*callback)(struct apr_device *a,
 			    struct apr_resp_pkt *d);
+	int	(*gpr_callback)(struct gpr_resp_pkt *d, void *data, int op);
 	struct device_driver		driver;
 	const struct apr_device_id	*id_table;
 };
 
+typedef struct apr_driver gpr_driver_t;
 #define to_apr_driver(d) container_of(d, struct apr_driver, driver)
 
 /*
@@ -123,7 +184,14 @@ void apr_driver_unregister(struct apr_driver *drv);
 #define module_apr_driver(__apr_driver) \
 	module_driver(__apr_driver, apr_driver_register, \
 			apr_driver_unregister)
+#define module_gpr_driver(__gpr_driver) module_apr_driver(__gpr_driver)
 
 int apr_send_pkt(struct apr_device *adev, struct apr_pkt *pkt);
 
+gpr_port_t *gpr_alloc_port(gpr_device_t *gdev, struct device *dev,
+				gpr_port_cb cb, void *priv);
+void gpr_free_port(gpr_port_t *port);
+int gpr_send_port_pkt(gpr_port_t *port, struct gpr_pkt *pkt);
+int gpr_send_pkt(gpr_device_t *gdev, struct gpr_pkt *pkt);
+
 #endif /* __QCOM_APR_H_ */