20060303

1 files changed, 62 insertions, 0 deletions

diff --git a/os/mpc/dsp.h b/os/mpc/dsp.h
new file mode 100644
index 00000000..9838757f
--- /dev/null
+++ b/os/mpc/dsp.h
@@ -0,0 +1,62 @@
+/*
+ * MPC82x/QUICC DSP support
+ */
+
+typedef struct DSP DSP;
+typedef struct FnD FnD;
+
+typedef short Real;
+typedef struct Complex Complex;
+
+struct Complex {
+	Real	im;
+	Real	re;
+};
+
+struct FnD {
+	ushort	status;
+	ushort	param[7];
+};
+
+enum {
+	FnDsize =	8*2,	/* each function descriptor is 8 shorts */
+
+	/* standard bits in FnD.status */
+	FnStop = 	1<<15,
+	FnWrap =	1<<13,
+	FnInt =	1<<12,
+
+	/* optional bits */
+	FnZ =	1<<11,	/* FIR[35], MOD */
+	FnIALL =	1<<10,	/* FIRx */
+	FnXinc0 =	0<<8,	/* FIRx, IRR */
+	FnXinc1 =	1<<8,
+	FnXinc2 =	2<<8,
+	FnXinc3 =	3<<8,
+	FnPC =	1<<7,	/* FIRx */
+
+
+	/* DSP functions (table 16-6) */
+	FnFIR1 =	0x01,
+	FnFIR2 =	0x02,
+	FnFIR3 =	0x03,
+	FnFIR5 = 	0x03,
+	FnFIR6 =	0x06,
+	FnIIR =	0x07,
+	FnMOD =	0x08,
+	FnDEMOD = 0x09,
+	FnLMS1 =	0x0A,
+	FnLMS2 =	0x0B,
+	FnWADD = 0x0C,
+};
+
+void	dspinitialise(void);
+DSP*	dspacquire(void (*)(void*), void*);
+void	dspexec(DSP*, FnD*, ulong);
+void*	dspmalloc(ulong);
+void	dspfree(void*, ulong);
+void	dspsetfn(DSP*, FnD*, ulong);
+void	dspstart(DSP*);
+void	dsprelease(DSP*);
+FnD*	fndalloc(ulong);
+void	fndfree(FnD*, ulong);