xref: /linux/drivers/isdn/hardware/mISDN/netjet.h (revision 75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * NETjet common header file
4  *
5  * Author	Karsten Keil
6  *              based on work of Matt Henderson and Daniel Potts,
7  *              Traverse Technologies P/L www.traverse.com.au
8  *
9  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
10  */
11 
12 #define NJ_CTRL			0x00
13 #define NJ_DMACTRL		0x01
14 #define NJ_AUXCTRL		0x02
15 #define NJ_AUXDATA		0x03
16 #define NJ_IRQMASK0		0x04
17 #define NJ_IRQMASK1		0x05
18 #define NJ_IRQSTAT0		0x06
19 #define NJ_IRQSTAT1		0x07
20 #define NJ_DMA_READ_START	0x08
21 #define NJ_DMA_READ_IRQ		0x0c
22 #define NJ_DMA_READ_END		0x10
23 #define NJ_DMA_READ_ADR		0x14
24 #define NJ_DMA_WRITE_START	0x18
25 #define NJ_DMA_WRITE_IRQ	0x1c
26 #define NJ_DMA_WRITE_END	0x20
27 #define NJ_DMA_WRITE_ADR	0x24
28 #define NJ_PULSE_CNT		0x28
29 
30 #define NJ_ISAC_OFF		0xc0
31 #define NJ_ISACIRQ		0x10
32 
33 #define NJ_IRQM0_RD_MASK	0x03
34 #define NJ_IRQM0_RD_IRQ		0x01
35 #define NJ_IRQM0_RD_END		0x02
36 #define NJ_IRQM0_WR_MASK	0x0c
37 #define NJ_IRQM0_WR_IRQ		0x04
38 #define NJ_IRQM0_WR_END		0x08
39 
40 /* one page here is no need to be smaller */
41 #define NJ_DMA_SIZE		4096
42 /* 2 * 64 byte is a compromise between IRQ count and latency */
43 #define NJ_DMA_RXSIZE		128  /* 2 * 64 */
44 #define NJ_DMA_TXSIZE		128  /* 2 * 64 */
45