/* * This structure is used by CPU to provide completed MDL & buffers information. * Its structure is dictated by the layout of the SCB, required by the * firmware, but its definition needs to be here, instead of in cx18-scb.h, * for mailbox work order scheduling
*/ struct cx18_mdl_ack {
u32 id; /* ID of a completed MDL */
u32 data_used; /* Total data filled in the MDL with 'id' */
};
/* The cx18_mailbox struct is the mailbox structure which is used for passing
messages between processors */ struct cx18_mailbox { /* The sender sets a handle in 'request' after he fills the command. The 'request' should be different than 'ack'. The sender, also, generates an interrupt on XPU2YPU_irq where XPU is the sender and YPU is the
receiver. */
u32 request; /* The receiver detects a new command when 'req' is different than 'ack'. He sets 'ack' to the same value as 'req' to clear the command. He, also, generates an interrupt on YPU2XPU_irq where XPU is the sender and YPU
is the receiver. */
u32 ack;
u32 reserved[6]; /* 'cmd' identifies the command. The list of these commands are in
cx23418.h */
u32 cmd; /* Each command can have up to 6 arguments */
u32 args[MAX_MB_ARGUMENTS]; /* The return code can be one of the codes in the file cx23418.h. If the command is completed successfully, the error will be ERR_SYS_SUCCESS. If it is pending, the code is ERR_SYS_PENDING. If it failed, the error code would indicate the task from which the error originated and will be one of the errors in cx23418.h. In that case, the following applies ((error & 0xff) != 0). If the command is pending, the return will be passed in a MB from the
receiver to the sender. 'req' will be returned in args[0] */
u32 error;
};
struct cx18_stream;
int cx18_api(struct cx18 *cx, u32 cmd, int args, u32 data[]); int cx18_vapi_result(struct cx18 *cx, u32 data[MAX_MB_ARGUMENTS], u32 cmd, int args, ...); int cx18_vapi(struct cx18 *cx, u32 cmd, int args, ...); int cx18_api_func(void *priv, u32 cmd, int in, int out,
u32 data[CX2341X_MBOX_MAX_DATA]);
void cx18_api_epu_cmd_irq(struct cx18 *cx, int rpu);
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