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android_kernel_...
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arch
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sparc
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include
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asm
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ebus_dma.h

ebus_dma.h 1.1 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. #ifndef __ASM_SPARC_EBUS_DMA_H
    3. 

  3. #define __ASM_SPARC_EBUS_DMA_H
    4. 

  4. 

  5. struct ebus_dma_info {
    6. 

  6. 	spinlock_t	lock;
    7. 

  7. 	void __iomem	*regs;
    8. 

  8. 

  9. 	unsigned int	flags;
    10. 

  10. #define EBUS_DMA_FLAG_USE_EBDMA_HANDLER		0x00000001
    11. 

  11. #define EBUS_DMA_FLAG_TCI_DISABLE		0x00000002
    12. 

  12. 

  13. 	/* These are only valid is EBUS_DMA_FLAG_USE_EBDMA_HANDLER is
    14. 

  14. 	 * set.
    15. 

  15. 	 */
    16. 

  16. 	void (*callback)(struct ebus_dma_info *p, int event, void *cookie);
    17. 

  17. 	void *client_cookie;
    18. 

  18. 	unsigned int	irq;
    19. 

  19. #define EBUS_DMA_EVENT_ERROR	1
    20. 

  20. #define EBUS_DMA_EVENT_DMA	2
    21. 

  21. #define EBUS_DMA_EVENT_DEVICE	4
    22. 

  22. 

  23. 	unsigned char	name[64];
    24. 

  24. };
    25. 

  25. 

  26. int ebus_dma_register(struct ebus_dma_info *p);
    27. 

  27. int ebus_dma_irq_enable(struct ebus_dma_info *p, int on);
    28. 

  28. void ebus_dma_unregister(struct ebus_dma_info *p);
    29. 

  29. int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr,
    30. 

  30. 			    size_t len);
    31. 

  31. void ebus_dma_prepare(struct ebus_dma_info *p, int write);
    32. 

  32. unsigned int ebus_dma_residue(struct ebus_dma_info *p);
    33. 

  33. unsigned int ebus_dma_addr(struct ebus_dma_info *p);
    34. 

  34. void ebus_dma_enable(struct ebus_dma_info *p, int on);
    35. 

  35. 

  36. #endif /* __ASM_SPARC_EBUS_DMA_H */
    37.