| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 */ |