dsp.h

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#ifndef DSP_H
#define DSP_H
 
#include "dolphin/os/OSTime.h"
#include "dolphin/os/OSInterrupt.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
volatile u16 __DSPRegs[32] AT_ADDRESS(0xCC005000);
volatile u32 __AIRegs[8] AT_ADDRESS(0xCC006C00);
 
#define DSP_TASK_FLAG_CLEARALL 0x00000000
#define DSP_TASK_FLAG_ATTACHED 0x00000001
#define DSP_TASK_FLAG_CANCEL 0x00000002
 
#define DSP_TASK_STATE_INIT 0
#define DSP_TASK_STATE_RUN 1
#define DSP_TASK_STATE_YIELD 2
#define DSP_TASK_STATE_DONE 3
 
#define DSP_MAILBOX_IN_HI (0)
#define DSP_MAILBOX_IN_LO (1)
#define DSP_MAILBOX_OUT_HI (2)
#define DSP_MAILBOX_OUT_LO (3)
#define DSP_CONTROL_STATUS (5)
 
#define DSP_ARAM_SIZE (9)
#define DSP_ARAM_MODE (11)
#define DSP_ARAM_REFRESH (13)
#define DSP_ARAM_DMA_MM_HI (16)  // Main mem address
#define DSP_ARAM_DMA_MM_LO (17)
#define DSP_ARAM_DMA_ARAM_HI (18)  // ARAM address
#define DSP_ARAM_DMA_ARAM_LO (19)
#define DSP_ARAM_DMA_SIZE_HI (20)  // DMA buffer size
#define DSP_ARAM_DMA_SIZE_LO (21)
 
#define DSP_DMA_START_HI (24)  // DMA start address
#define DSP_DMA_START_LO (25)
#define DSP_DMA_CONTROL_LEN (27)
#define DSP_DMA_BYTES_LEFT (29)
 
#define DSP_DMA_START_FLAG (0x8000)  // set to start DSP
 
typedef void (*DSPCallback)(void* task);
 
typedef struct DSPTaskInfo DSPTaskInfo;
 
typedef struct DSPTaskInfo {
    /* 0x00 */ vu32 state;
    /* 0x04 */ vu32 priority;
    /* 0x08 */ vu32 flags;
    /* 0x0C */ u16* iram_mmem_addr;
    /* 0x10 */ u32 iram_length;
    /* 0x14 */ u32 iram_addr;
 
    /* 0x18 */ u16* dram_mmem_addr;
    /* 0x1C */ u32 dram_length;
    /* 0x20 */ u32 dram_addr;
 
    /* 0x24 */ u16 dsp_init_vector;
    /* 0x26 */ u16 dsp_resume_vector;
 
    /* 0x28 */ DSPCallback init_cb;
    /* 0x2C */ DSPCallback res_cb;
    /* 0x30 */ DSPCallback done_cb;
    /* 0x34 */ DSPCallback req_cb;
 
    /* 0x38 */ struct DSPTaskInfo* next;
    /* 0x3C */ struct DSPTaskInfo* prev;
 
    /* 0x40 */ OSTime t_context;
    /* 0x48 */ OSTime t_task;
} DSPTaskInfo;
 
u32 DSPCheckMailToDSP(void);
u32 DSPCheckMailFromDSP(void);
u32 DSPReadMailFromDSP(void);
void DSPSendMailToDSP(u32 mail);
void DSPAssertInt();
void DSPInit(void);
 
void __DSPHandler(__OSInterrupt interrupt, OSContext* context);
 
#ifdef __cplusplus
}
#endif
 
#endif /* DSP_H */