Lines Matching +full:single +full:- +full:channel

1 /* SPDX-License-Identifier: GPL-2.0 */
4  * High DMA channel support & info by Hannu Savolainen
18 ** DMA_CHUNK_SIZE is used by the SCSI mid-layer to break up
32 ** We don't have DMA channels... well V-class does but the
34 ** Note: this is not relevant right now for PA-RISC, but we cannot 
36 ** won't compile :-(
39 #define DMA_MODE_READ	0x44	/* I/O to memory, no autoinit, increment, single mode */
40 #define DMA_MODE_WRITE	0x48	/* memory to I/O, no autoinit, increment, single mode */
41 #define DMA_MODE_CASCADE 0xC0	/* pass thru DREQ->HRQ, DACK<-HLDA only */
53 #define DMA1_MASK_REG		0x0A	/* single-channel mask (w) */
55 #define DMA1_CLEAR_FF_REG	0x0C	/* clear pointer flip-flop (w) */
59 #define DMA1_MASK_ALL_REG       0x0F    /* all-channels mask (w) */
65 #define DMA2_MASK_REG		0xD4	/* single-channel mask (w) */
67 #define DMA2_CLEAR_FF_REG	0xD8	/* clear pointer flip-flop (w) */
71 #define DMA2_MASK_ALL_REG       0xDE    /* all-channels mask (w) */
87  * If called before the channel has been used, it may return 1.
90  * Assumes DMA flip-flop is clear.
97 	/* using short to get 16-bit wrap around */  in get_dma_residue()
106 /* enable/disable a specific DMA channel */
127 /* reserve a DMA channel */
133  * After that, keep track of it. :-)
134  * --- In order to do that, the DMA routines below should ---
135  * --- only be used while holding the DMA lock ! ---
141 /* set mode (above) for a specific DMA channel */
156 /* Set transfer address & page bits for specific DMA channel.
165  * a specific DMA channel.
169  * Assumes dma flip-flop is clear.
170  * NOTE 2: "count" represents _bytes_ and must be even for channels 5-7.