1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_SPARC_EBUS_DMA_H
3 #define __ASM_SPARC_EBUS_DMA_H
4 
5 struct ebus_dma_info {
6 	spinlock_t	lock;
7 	void __iomem	*regs;
8 
9 	unsigned int	flags;
10 #define EBUS_DMA_FLAG_USE_EBDMA_HANDLER		0x00000001
11 #define EBUS_DMA_FLAG_TCI_DISABLE		0x00000002
12 
13 	/* These are only valid is EBUS_DMA_FLAG_USE_EBDMA_HANDLER is
14 	 * set.
15 	 */
16 	void (*callback)(struct ebus_dma_info *p, int event, void *cookie);
17 	void *client_cookie;
18 	unsigned int	irq;
19 #define EBUS_DMA_EVENT_ERROR	1
20 #define EBUS_DMA_EVENT_DMA	2
21 #define EBUS_DMA_EVENT_DEVICE	4
22 
23 	unsigned char	name[64];
24 };
25 
26 int ebus_dma_register(struct ebus_dma_info *p);
27 int ebus_dma_irq_enable(struct ebus_dma_info *p, int on);
28 void ebus_dma_unregister(struct ebus_dma_info *p);
29 int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr,
30 			    size_t len);
31 void ebus_dma_prepare(struct ebus_dma_info *p, int write);
32 unsigned int ebus_dma_residue(struct ebus_dma_info *p);
33 unsigned int ebus_dma_addr(struct ebus_dma_info *p);
34 void ebus_dma_enable(struct ebus_dma_info *p, int on);
35 
36 #endif /* __ASM_SPARC_EBUS_DMA_H */
37