105 lines
2.1 KiB
C
105 lines
2.1 KiB
C
//---
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// gint:intc:tmu - Timer Unit
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//
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// The definitions in this file cover both the Timer Unit and the Extra
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// Timers. The structures are related but not identical; the behaviour is
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// subtly different.
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//---
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#ifndef GINT_MPU_TMU
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#define GINT_MPU_TMU
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#include <gint/defs/types.h>
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//---
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// Common structures
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//---
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/* tmu_t - a single timer from a standard timer unit */
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typedef volatile struct
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{
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uint32_t TCOR; /* Constant register */
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uint32_t TCNT; /* Counter register, counts down */
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word_union(TCR,
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uint16_t :7;
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uint16_t UNF :1; /* Underflow flag */
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uint16_t :2;
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uint16_t UNIE :1; /* Underflow interrupt enable */
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uint16_t CKEG :2; /* Input clock edge */
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uint16_t TPSC :3; /* Timer prescaler (input clock) */
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);
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} GPACKED(4) tmu_t;
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/* etmu_t - extra timers on SH7337, SH7355 and SH7305 */
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typedef volatile struct
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{
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uint8_t TSTR; /* Only bit 0 is used */
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pad(3);
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uint32_t TCOR; /* Constant register */
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uint32_t TCNT; /* Counter register */
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byte_union(TCR,
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uint8_t :6;
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uint8_t UNF :1; /* Underflow flag */
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uint8_t UNIE :1; /* Underflow interrupt enable */
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);
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pad(19);
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} GPACKED(0x10) etmu_t;
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//---
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// SH7705 Timer Unit. Refer to:
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// "Renesas SH7705 Group Hardware Manual"
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// Section 12: "Timer Unit (TMU)"
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//---
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typedef volatile struct
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{
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pad(2);
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uint8_t TSTR; /* Timer Start Register */
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pad(1);
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tmu_t TMU[3];
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uint32_t TCPR2; /* Timer Input Capture Register 2 */
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} GPACKED(4) sh7705_tmu_t;
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#define SH7705_TMU (*(sh7705_tmu_t *)0xfffffe90)
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//---
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// SH7705 Extra Timer Unit. No official documentation exists.
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//---
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typedef volatile etmu_t sh7705_etmu_t[1];
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#define SH7705_ETMU (*(sh7705_etmu_t *)0xa44c0030)
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//---
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// SH7305 Timer Unit. Refer to:
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// "Renesas SH7724 User's Manual: Hardware"
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// Section 20: "Timer Unit (TMU)"
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//---
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typedef volatile struct
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{
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uint8_t TSTR; /* Timer Start Register */
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pad(3);
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tmu_t TMU[3];
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} GPACKED(4) sh7305_tmu_t;
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#define SH7305_TMU (*((sh7305_tmu_t *)0xa4490004))
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//---
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// SH7305 Extra Timer Unit. No official documentation exists.
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//---
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typedef volatile etmu_t sh7305_etmu_t[6];
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#define SH7305_ETMU (*(sh7305_etmu_t *)0xa44d0030)
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#endif /* GINT_MPU_TMU */
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