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