1 /* SPDX-License-Identifier: GPL-2.0 */
3  * include/asm-m68k/dma.h
16 #define DVMA_PAGE_MASK	(~(DVMA_PAGE_SIZE-1))
43 #define DVMA_SIZE (DVMA_END-DVMA_START)
47 /* empirical kludge -- dvma regions only seem to work right on 0x10000
50 #define DVMA_ALIGN(addr) (((addr)+DVMA_REGION_SIZE-1) & \
51                          ~(DVMA_REGION_SIZE-1))
53 /* virt <-> phys conversions */
73 #define DVMA_SIZE (DVMA_END-DVMA_START)
76 #define IOMMU_ENTRIES              (IOMMU_TOTAL_ENTRIES - 0x80)
113 	struct sparc_dma_registers *regs;  member
132 #define DMA_ISBROKEN(dma)    ((dma)->revision == dvmarev1)
133 #define DMA_ISESC1(dma)      ((dma)->revision == dvmaesc1)
171 #define DMA_BRST0        0x00080000        /* SCSI: no bursts (non-HME gate arrays) */
175 #define DMA_EN_ENETAUI   DMA_3CLKS         /* Put lance into AUI-cable mode */
183 /* Values describing the burst-size property from the PROM */
194 #define DMA_MAXEND(addr) (0x01000000UL-(((unsigned long)(addr))&0x00ffffffUL))
196 /* Yes, I hack a lot of elisp in my spare time... */
197 #define DMA_ERROR_P(regs)  ((((regs)->cond_reg) & DMA_HNDL_ERROR))  argument
198 #define DMA_IRQ_P(regs)    ((((regs)->cond_reg) & (DMA_HNDL_INTR | DMA_HNDL_ERROR)))  argument
199 #define DMA_WRITE_P(regs)  ((((regs)->cond_reg) & DMA_ST_WRITE))  argument
200 #define DMA_OFF(regs)      ((((regs)->cond_reg) &= (~DMA_ENABLE)))  argument
201 #define DMA_INTSOFF(regs)  ((((regs)->cond_reg) &= (~DMA_INT_ENAB)))  argument
202 #define DMA_INTSON(regs)   ((((regs)->cond_reg) |= (DMA_INT_ENAB)))  argument
203 #define DMA_PUNTFIFO(regs) ((((regs)->cond_reg) |= DMA_FIFO_INV))  argument
204 #define DMA_SETSTART(regs, addr)  ((((regs)->st_addr) = (char *) addr))  argument
205 #define DMA_BEGINDMA_W(regs) \  argument
206         ((((regs)->cond_reg |= (DMA_ST_WRITE|DMA_ENABLE|DMA_INT_ENAB))))
207 #define DMA_BEGINDMA_R(regs) \  argument
208         ((((regs)->cond_reg |= ((DMA_ENABLE|DMA_INT_ENAB)&(~DMA_ST_WRITE)))))
225 	struct sparc_dma_registers *regs = dma->regs;                      \
227 	sparc_dma_pause(regs, (DMA_FIFO_ISDRAIN));                         \
229 	regs->cond_reg |= (DMA_RST_SCSI);     /* assert */                 \
231 	regs->cond_reg &= ~(DMA_RST_SCSI);    /* de-assert */              \
232 	sparc_dma_enable_interrupts(regs);    /* Re-enable interrupts */   \
234 	if(dma->revision>dvmarev1) regs->cond_reg |= DMA_3CLKS;            \
235 	dma->running = 0;                                                  \