1. 根目录:
2. arch
3. unicore32
4. include
5. mach
6. regs-dmac.h

/*
 * PKUnity Direct Memory Access Controller (DMAC)
 */

/*
 * Interrupt Status Reg DMAC_ISR.
 */
#define DMAC_ISR		(PKUNITY_DMAC_BASE + 0x0020)
/*
 * Interrupt Transfer Complete Status Reg DMAC_ITCSR.
 */
#define DMAC_ITCSR		(PKUNITY_DMAC_BASE + 0x0050)
/*
 * Interrupt Transfer Complete Clear Reg DMAC_ITCCR.
 */
#define DMAC_ITCCR		(PKUNITY_DMAC_BASE + 0x0060)
/*
 * Interrupt Error Status Reg DMAC_IESR.
 */
#define DMAC_IESR		(PKUNITY_DMAC_BASE + 0x0080)
/*
 * Interrupt Error Clear Reg DMAC_IECR.
 */
#define DMAC_IECR		(PKUNITY_DMAC_BASE + 0x0090)
/*
 * Enable Channels Reg DMAC_ENCH.
 */
#define DMAC_ENCH		(PKUNITY_DMAC_BASE + 0x00B0)

/*
 * DMA control reg. Space [byte]
 */
#define DMASp                   0x00000100

/*
 * Source Addr DMAC_SRCADDR(ch).
 */
#define DMAC_SRCADDR(ch)	(PKUNITY_DMAC_BASE + (ch)*DMASp + 0x00)
/*
 * Destination Addr DMAC_DESTADDR(ch).
 */
#define DMAC_DESTADDR(ch)	(PKUNITY_DMAC_BASE + (ch)*DMASp + 0x04)
/*
 * Control Reg DMAC_CONTROL(ch).
 */
#define DMAC_CONTROL(ch)	(PKUNITY_DMAC_BASE + (ch)*DMASp + 0x0C)
/*
 * Configuration Reg DMAC_CONFIG(ch).
 */
#define DMAC_CONFIG(ch)		(PKUNITY_DMAC_BASE + (ch)*DMASp + 0x10)

#define DMAC_IR_MASK            FMASK(6, 0)
/*
 * select channel (ch)
 */
#define DMAC_CHANNEL(ch)	FIELD(1, 1, (ch))

#define DMAC_CONTROL_SIZE_BYTE(v)       (FIELD((v), 12, 14) | \
					FIELD(0, 3, 9) | FIELD(0, 3, 6))
#define DMAC_CONTROL_SIZE_HWORD(v)      (FIELD((v) >> 1, 12, 14) | \
					FIELD(1, 3, 9) | FIELD(1, 3, 6))
#define DMAC_CONTROL_SIZE_WORD(v)       (FIELD((v) >> 2, 12, 14) | \
					FIELD(2, 3, 9) | FIELD(2, 3, 6))
#define DMAC_CONTROL_DI                 FIELD(1, 1, 13)
#define DMAC_CONTROL_SI                 FIELD(1, 1, 12)
#define DMAC_CONTROL_BURST_1BYTE        (FIELD(0, 3, 3) | FIELD(0, 3, 0))
#define DMAC_CONTROL_BURST_4BYTE        (FIELD(3, 3, 3) | FIELD(3, 3, 0))
#define DMAC_CONTROL_BURST_8BYTE        (FIELD(5, 3, 3) | FIELD(5, 3, 0))
#define DMAC_CONTROL_BURST_16BYTE       (FIELD(7, 3, 3) | FIELD(7, 3, 0))

#define	DMAC_CONFIG_UART0_WR    (FIELD(2, 4, 11) | FIELD(1, 2, 1))
#define	DMAC_CONFIG_UART0_RD    (FIELD(2, 4, 7)  | FIELD(2, 2, 1))
#define	DMAC_CONFIG_UART1_WR    (FIELD(3, 4, 11) | FIELD(1, 2, 1))
#define	DMAC_CONFIG_UART1RD     (FIELD(3, 4, 7)  | FIELD(2, 2, 1))
#define	DMAC_CONFIG_AC97WR      (FIELD(4, 4, 11) | FIELD(1, 2, 1))
#define	DMAC_CONFIG_AC97RD      (FIELD(4, 4, 7)  | FIELD(2, 2, 1))
#define	DMAC_CONFIG_MMCWR       (FIELD(7, 4, 11) | FIELD(1, 2, 1))
#define	DMAC_CONFIG_MMCRD       (FIELD(7, 4, 7)  | FIELD(2, 2, 1))
#define DMAC_CONFIG_MASKITC     FIELD(1, 1, 4)
#define DMAC_CONFIG_MASKIE      FIELD(1, 1, 3)
#define DMAC_CONFIG_EN          FIELD(1, 1, 0)