85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
![]() |
/*
|
||
|
* SH-ARM CPU-specific DMA definitions, used by both DMA drivers
|
||
|
*
|
||
|
* Copyright (C) 2012 Renesas Solutions Corp
|
||
|
*
|
||
|
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
|
||
|
*
|
||
|
* Based on arch/sh/include/cpu-sh4/cpu/dma-register.h
|
||
|
* Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
|
||
|
*
|
||
|
* This program is free software; you can redistribute it and/or modify
|
||
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
* published by the Free Software Foundation.
|
||
|
*/
|
||
|
|
||
|
#ifndef DMA_REGISTER_H
|
||
|
#define DMA_REGISTER_H
|
||
|
|
||
|
/*
|
||
|
* Direct Memory Access Controller
|
||
|
*/
|
||
|
|
||
|
/* Transmit sizes and respective CHCR register values */
|
||
|
enum {
|
||
|
XMIT_SZ_8BIT = 0,
|
||
|
XMIT_SZ_16BIT = 1,
|
||
|
XMIT_SZ_32BIT = 2,
|
||
|
XMIT_SZ_64BIT = 7,
|
||
|
XMIT_SZ_128BIT = 3,
|
||
|
XMIT_SZ_256BIT = 4,
|
||
|
XMIT_SZ_512BIT = 5,
|
||
|
};
|
||
|
|
||
|
/* log2(size / 8) - used to calculate number of transfers */
|
||
|
static const unsigned int dma_ts_shift[] = {
|
||
|
[XMIT_SZ_8BIT] = 0,
|
||
|
[XMIT_SZ_16BIT] = 1,
|
||
|
[XMIT_SZ_32BIT] = 2,
|
||
|
[XMIT_SZ_64BIT] = 3,
|
||
|
[XMIT_SZ_128BIT] = 4,
|
||
|
[XMIT_SZ_256BIT] = 5,
|
||
|
[XMIT_SZ_512BIT] = 6,
|
||
|
};
|
||
|
|
||
|
#define TS_LOW_BIT 0x3 /* --xx */
|
||
|
#define TS_HI_BIT 0xc /* xx-- */
|
||
|
|
||
|
#define TS_LOW_SHIFT (3)
|
||
|
#define TS_HI_SHIFT (20 - 2) /* 2 bits for shifted low TS */
|
||
|
|
||
|
#define TS_INDEX2VAL(i) \
|
||
|
((((i) & TS_LOW_BIT) << TS_LOW_SHIFT) |\
|
||
|
(((i) & TS_HI_BIT) << TS_HI_SHIFT))
|
||
|
|
||
|
#define CHCR_TX(xmit_sz) (DM_FIX | SM_INC | 0x800 | TS_INDEX2VAL((xmit_sz)))
|
||
|
#define CHCR_RX(xmit_sz) (DM_INC | SM_FIX | 0x800 | TS_INDEX2VAL((xmit_sz)))
|
||
|
|
||
|
|
||
|
/*
|
||
|
* USB High-Speed DMAC
|
||
|
*/
|
||
|
/* Transmit sizes and respective CHCR register values */
|
||
|
enum {
|
||
|
USBTS_XMIT_SZ_8BYTE = 0,
|
||
|
USBTS_XMIT_SZ_16BYTE = 1,
|
||
|
USBTS_XMIT_SZ_32BYTE = 2,
|
||
|
};
|
||
|
|
||
|
/* log2(size / 8) - used to calculate number of transfers */
|
||
|
static const unsigned int dma_usbts_shift[] = {
|
||
|
[USBTS_XMIT_SZ_8BYTE] = 3,
|
||
|
[USBTS_XMIT_SZ_16BYTE] = 4,
|
||
|
[USBTS_XMIT_SZ_32BYTE] = 5,
|
||
|
};
|
||
|
|
||
|
#define USBTS_LOW_BIT 0x3 /* --xx */
|
||
|
#define USBTS_HI_BIT 0x0 /* ---- */
|
||
|
|
||
|
#define USBTS_LOW_SHIFT 6
|
||
|
#define USBTS_HI_SHIFT 0
|
||
|
|
||
|
#define USBTS_INDEX2VAL(i) (((i) & 3) << 6)
|
||
|
|
||
|
#endif /* DMA_REGISTER_H */
|