/* SPDX-License-Identifier: GPL-2.0 */ /* * include/asm-m68k/dma.h * * Copyright 1995 (C) David S. Miller (davem@caip.rutgers.edu) * * Hacked to fit Sun3x needs by Thomas Bogendoerfer */ #ifndef __M68K_DVMA_H #define __M68K_DVMA_H #define DVMA_PAGE_SHIFT 13 #define DVMA_PAGE_SIZE (1UL << DVMA_PAGE_SHIFT) #define DVMA_PAGE_MASK (~(DVMA_PAGE_SIZE-1)) #define DVMA_PAGE_ALIGN(addr) ALIGN(addr, DVMA_PAGE_SIZE) extern void dvma_init(void); extern int dvma_map_iommu(unsigned long kaddr, unsigned long baddr, int len); #define dvma_malloc(x) dvma_malloc_align(x, 0) #define dvma_map(x, y) dvma_map_align(x, y, 0) #define dvma_map_vme(x, y) (dvma_map(x, y) & 0xfffff) #define dvma_map_align_vme(x, y, z) (dvma_map_align (x, y, z) & 0xfffff) extern unsigned long dvma_map_align(unsigned long kaddr, int len, int align); extern void *dvma_malloc_align(unsigned long len, unsigned long align); extern void dvma_unmap(void *baddr); extern void dvma_free(void *vaddr); #ifdef CONFIG_SUN3 /* sun3 dvma page support */ /* memory and pmegs potentially reserved for dvma */ #define DVMA_PMEG_START 10 #define DVMA_PMEG_END 16 #define DVMA_START 0xf00000 #define DVMA_END 0xfe0000 #define DVMA_SIZE (DVMA_END-DVMA_START) #define IOMMU_TOTAL_ENTRIES 128 #define IOMMU_ENTRIES 120 /* empirical kludge -- dvma regions only seem to work right on 0x10000 byte boundaries */ #define DVMA_REGION_SIZE 0x10000 #define DVMA_ALIGN(addr) (((addr)+DVMA_REGION_SIZE-1) & \ ~(DVMA_REGION_SIZE-1)) /* virt <-> phys conversions */ #define dvma_vtop(x) ((unsigned long)(x) & 0xffffff) #define dvma_ptov(x) ((unsigned long)(x) | 0xf000000) #define dvma_vtovme(x) ((unsigned long)(x) & 0x00fffff) #define dvma_vmetov(x) ((unsigned long)(x) | 0xff00000) #define dvma_vtob(x) dvma_vtop(x) #define dvma_btov(x) dvma_ptov(x) static inline int dvma_map_cpu(unsigned long kaddr, unsigned long vaddr, int len) { return 0; } #else /* Sun3x */ /* sun3x dvma page support */ #define DVMA_START 0x0 #define DVMA_END 0xf00000 #define DVMA_SIZE (DVMA_END-DVMA_START) #define IOMMU_TOTAL_ENTRIES 2048 /* the prom takes the top meg */ #define IOMMU_ENTRIES (IOMMU_TOTAL_ENTRIES - 0x80) #define dvma_vtob(x) ((unsigned long)(x) & 0x00ffffff) #define dvma_btov(x) ((unsigned long)(x) | 0xff000000) extern int dvma_map_cpu(unsigned long kaddr, unsigned long vaddr, int len); /* everything below this line is specific to dma used for the onboard ESP scsi on sun3x */ /* Structure to describe the current status of DMA registers on the Sparc */ struct sparc_dma_registers { __volatile__ unsigned long cond_reg; /* DMA condition register */ __volatile__ unsigned long st_addr; /* Start address of this transfer */ __volatile__ unsigned long cnt; /* How many bytes to transfer */ __volatile__ unsigned long dma_test; /* DMA test register */ }; /* DVMA chip revisions */ enum dvma_rev { dvmarev0, dvmaesc1, dvmarev1, dvmarev2, dvmarev3, dvmarevplus, dvmahme }; #define DMA_HASCOUNT(rev) ((rev)==dvmaesc1) /* Linux DMA information structure, filled during probe. */ struct Linux_SBus_DMA { struct Linux_SBus_DMA *next; struct linux_sbus_device *SBus_dev; struct sparc_dma_registers *regs; /* Status, misc info */ int node; /* Prom node for this DMA device */ int running; /* Are we doing DMA now? */ int allocated; /* Are we "owned" by anyone yet? */ /* Transfer information. */ unsigned long addr; /* Start address of current transfer */ int nbytes; /* Size of current transfer */ int realbytes; /* For splitting up large transfers, etc. */ /* DMA revision */ enum dvma_rev revision; }; extern struct Linux_SBus_DMA *dma_chain; /* Broken hardware... */ #define DMA_ISBROKEN(dma) ((dma)->revision == dvmarev1) #define DMA_ISESC1(dma) ((dma)->revision == dvmaesc1) /* Fields in the cond_reg register */ /* First, the version identification bits */ #define DMA_DEVICE_ID 0xf0000000 /* Device identification bits */ #define DMA_VERS0 0x00000000 /* Sunray DMA version */ #define DMA_ESCV1 0x40000000 /* DMA ESC Version 1 */ #define DMA_VERS1 0x80000000 /* DMA rev 1 */ #define DMA_VERS2 0xa0000000 /* DMA rev 2 */ #define DMA_VERHME 0xb0000000 /* DMA hme gate array */ #define DMA_VERSPLUS 0x90000000 /* DMA rev 1 PLUS */ #define DMA_HNDL_INTR 0x00000001 /* An IRQ needs to be handled */ #define DMA_HNDL_ERROR 0x00000002 /* We need to take an error */ #define DMA_FIFO_ISDRAIN 0x0000000c /* The DMA FIFO is draining */ #define DMA_INT_ENAB 0x00000010 /* Turn on interrupts */ #define DMA_FIFO_INV 0x00000020 /* Invalidate the FIFO */ #define DMA_ACC_SZ_ERR 0x00000040 /* The access size was bad */ #define DMA_FIFO_STDRAIN 0x00000040 /* DMA_VERS1 Drain the FIFO */ #define DMA_RST_SCSI 0x00000080 /* Reset the SCSI controller */ #define DMA_RST_ENET DMA_RST_SCSI /* Reset the ENET controller */ #define DMA_ST_WRITE 0x00000100 /* write from device to memory */ #define DMA_ENABLE 0x00000200 /* Fire up DMA, handle requests */ #define DMA_PEND_READ 0x00000400 /* DMA_VERS1/0/PLUS Pending Read */ #define DMA_ESC_BURST 0x00000800 /* 1=16byte 0=32byte */ #define DMA_READ_AHEAD 0x00001800 /* DMA read ahead partial longword */ #define DMA_DSBL_RD_DRN 0x00001000 /* No EC drain on slave reads */ #define DMA_BCNT_ENAB 0x00002000 /* If on, use the byte counter */ #define DMA_TERM_CNTR 0x00004000 /* Terminal counter */ #define DMA_CSR_DISAB 0x00010000 /* No FIFO drains during csr */ #define DMA_SCSI_DISAB 0x00020000 /* No FIFO drains during reg */ #define DMA_DSBL_WR_INV 0x00020000 /* No EC inval. on slave writes */ #define DMA_ADD_ENABLE 0x00040000 /* Special ESC DVMA optimization */ #define DMA_E_BURST8 0x00040000 /* ENET: SBUS r/w burst size */ #define DMA_BRST_SZ 0x000c0000 /* SCSI: SBUS r/w burst size */ #define DMA_BRST64 0x00080000 /* SCSI: 64byte bursts (HME on UltraSparc only) */ #define DMA_BRST32 0x00040000 /* SCSI: 32byte bursts */ #define DMA_BRST16 0x00000000 /* SCSI: 16byte bursts */ #define DMA_BRST0 0x00080000 /* SCSI: no bursts (non-HME gate arrays) */ #define DMA_ADDR_DISAB 0x00100000 /* No FIFO drains during addr */ #define DMA_2CLKS 0x00200000 /* Each transfer = 2 clock ticks */ #define DMA_3CLKS 0x00400000 /* Each transfer = 3 clock ticks */ #define DMA_EN_ENETAUI DMA_3CLKS /* Put lance into AUI-cable mode */ #define DMA_CNTR_DISAB 0x00800000 /* No IRQ when DMA_TERM_CNTR set */ #define DMA_AUTO_NADDR 0x01000000 /* Use "auto nxt addr" feature */ #define DMA_SCSI_ON 0x02000000 /* Enable SCSI dma */ #define DMA_PARITY_OFF 0x02000000 /* HME: disable parity checking */ #define DMA_LOADED_ADDR 0x04000000 /* Address has been loaded */ #define DMA_LOADED_NADDR 0x08000000 /* Next address has been loaded */ /* Values describing the burst-size property from the PROM */ #define DMA_BURST1 0x01 #define DMA_BURST2 0x02 #define DMA_BURST4 0x04 #define DMA_BURST8 0x08 #define DMA_BURST16 0x10 #define DMA_BURST32 0x20 #define DMA_BURST64 0x40 #define DMA_BURSTBITS 0x7f /* Determine highest possible final transfer address given a base */ #define DMA_MAXEND(addr) (0x01000000UL-(((unsigned long)(addr))&0x00ffffffUL)) /* Yes, I hack a lot of elisp in my spare time... */ #define DMA_ERROR_P(regs) ((((regs)->cond_reg) & DMA_HNDL_ERROR)) #define DMA_IRQ_P(regs) ((((regs)->cond_reg) & (DMA_HNDL_INTR | DMA_HNDL_ERROR))) #define DMA_WRITE_P(regs) ((((regs)->cond_reg) & DMA_ST_WRITE)) #define DMA_OFF(regs) ((((regs)->cond_reg) &= (~DMA_ENABLE))) #define DMA_INTSOFF(regs) ((((regs)->cond_reg) &= (~DMA_INT_ENAB))) #define DMA_INTSON(regs) ((((regs)->cond_reg) |= (DMA_INT_ENAB))) #define DMA_PUNTFIFO(regs) ((((regs)->cond_reg) |= DMA_FIFO_INV)) #define DMA_SETSTART(regs, addr) ((((regs)->st_addr) = (char *) addr)) #define DMA_BEGINDMA_W(regs) \ ((((regs)->cond_reg |= (DMA_ST_WRITE|DMA_ENABLE|DMA_INT_ENAB)))) #define DMA_BEGINDMA_R(regs) \ ((((regs)->cond_reg |= ((DMA_ENABLE|DMA_INT_ENAB)&(~DMA_ST_WRITE))))) /* For certain DMA chips, we need to disable ints upon irq entry * and turn them back on when we are done. So in any ESP interrupt * handler you *must* call DMA_IRQ_ENTRY upon entry and DMA_IRQ_EXIT * when leaving the handler. You have been warned... */ #define DMA_IRQ_ENTRY(dma, dregs) do { \ if(DMA_ISBROKEN(dma)) DMA_INTSOFF(dregs); \ } while (0) #define DMA_IRQ_EXIT(dma, dregs) do { \ if(DMA_ISBROKEN(dma)) DMA_INTSON(dregs); \ } while(0) /* Reset the friggin' thing... */ #define DMA_RESET(dma) do { \ struct sparc_dma_registers *regs = dma->regs; \ /* Let the current FIFO drain itself */ \ sparc_dma_pause(regs, (DMA_FIFO_ISDRAIN)); \ /* Reset the logic */ \ regs->cond_reg |= (DMA_RST_SCSI); /* assert */ \ __delay(400); /* let the bits set ;) */ \ regs->cond_reg &= ~(DMA_RST_SCSI); /* de-assert */ \ sparc_dma_enable_interrupts(regs); /* Re-enable interrupts */ \ /* Enable FAST transfers if available */ \ if(dma->revision>dvmarev1) regs->cond_reg |= DMA_3CLKS; \ dma->running = 0; \ } while(0) #endif /* !CONFIG_SUN3 */ #endif /* !(__M68K_DVMA_H) */
Name | Type | Size | Permission | Actions |
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Kbuild | File | 599 B | 0644 |
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MC68328.h | File | 37.82 KB | 0644 |
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MC68EZ328.h | File | 37.74 KB | 0644 |
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MC68VZ328.h | File | 41.02 KB | 0644 |
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a.out-core.h | File | 1.98 KB | 0644 |
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adb_iop.h | File | 1.09 KB | 0644 |
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amigahw.h | File | 10.49 KB | 0644 |
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amigaints.h | File | 3.5 KB | 0644 |
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amigayle.h | File | 3.19 KB | 0644 |
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amipcmcia.h | File | 2.51 KB | 0644 |
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apollohw.h | File | 2.35 KB | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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asm-prototypes.h | File | 211 B | 0644 |
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atafd.h | File | 300 B | 0644 |
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atafdreg.h | File | 2.68 KB | 0644 |
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atari_joystick.h | File | 457 B | 0644 |
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atari_stdma.h | File | 514 B | 0644 |
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atari_stram.h | File | 528 B | 0644 |
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atarihw.h | File | 20.3 KB | 0644 |
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atariints.h | File | 5.56 KB | 0644 |
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atarikb.h | File | 1.4 KB | 0644 |
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atomic.h | File | 4.86 KB | 0644 |
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bitops.h | File | 12.19 KB | 0644 |
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blinken.h | File | 641 B | 0644 |
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bootinfo.h | File | 783 B | 0644 |
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bootstd.h | File | 4.64 KB | 0644 |
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bug.h | File | 659 B | 0644 |
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bugs.h | File | 369 B | 0644 |
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bvme6000hw.h | File | 3.45 KB | 0644 |
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cache.h | File | 296 B | 0644 |
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cacheflush.h | File | 133 B | 0644 |
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cacheflush_mm.h | File | 6.92 KB | 0644 |
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cacheflush_no.h | File | 2.61 KB | 0644 |
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checksum.h | File | 3.4 KB | 0644 |
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cmpxchg.h | File | 3.34 KB | 0644 |
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coldfire.h | File | 1.61 KB | 0644 |
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contregs.h | File | 3.31 KB | 0644 |
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current.h | File | 580 B | 0644 |
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delay.h | File | 3.43 KB | 0644 |
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div64.h | File | 858 B | 0644 |
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dma-mapping.h | File | 291 B | 0644 |
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dma.h | File | 16.65 KB | 0644 |
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dsp56k.h | File | 1.24 KB | 0644 |
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dvma.h | File | 9.67 KB | 0644 |
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elf.h | File | 3.07 KB | 0644 |
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entry.h | File | 5.76 KB | 0644 |
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export.h | File | 74 B | 0644 |
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fb.h | File | 921 B | 0644 |
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fbio.h | File | 9.87 KB | 0644 |
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flat.h | File | 1.02 KB | 0644 |
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floppy.h | File | 5.06 KB | 0644 |
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fpu.h | File | 535 B | 0644 |
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ftrace.h | File | 12 B | 0644 |
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gpio.h | File | 2.64 KB | 0644 |
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hardirq.h | File | 594 B | 0644 |
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hash.h | File | 2.07 KB | 0644 |
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hp300hw.h | File | 186 B | 0644 |
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hwtest.h | File | 467 B | 0644 |
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ide.h | File | 1.67 KB | 0644 |
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idprom.h | File | 725 B | 0644 |
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intersil.h | File | 1.11 KB | 0644 |
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io.h | File | 383 B | 0644 |
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io_mm.h | File | 16.19 KB | 0644 |
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io_no.h | File | 5.26 KB | 0644 |
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irq.h | File | 2.57 KB | 0644 |
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irqflags.h | File | 1.61 KB | 0644 |
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kexec.h | File | 732 B | 0644 |
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linkage.h | File | 1.55 KB | 0644 |
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m5206sim.h | File | 6.4 KB | 0644 |
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m520xsim.h | File | 7.15 KB | 0644 |
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m523xsim.h | File | 7.7 KB | 0644 |
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m525xsim.h | File | 10.57 KB | 0644 |
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m5272sim.h | File | 6.05 KB | 0644 |
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m527xsim.h | File | 13.51 KB | 0644 |
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m528xsim.h | File | 9.37 KB | 0644 |
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m52xxacr.h | File | 3.57 KB | 0644 |
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m5307sim.h | File | 7.52 KB | 0644 |
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m53xxacr.h | File | 3.6 KB | 0644 |
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m53xxsim.h | File | 53.97 KB | 0644 |
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m5407sim.h | File | 6.14 KB | 0644 |
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m5441xsim.h | File | 8.5 KB | 0644 |
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m54xxacr.h | File | 4.82 KB | 0644 |
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m54xxgpt.h | File | 3.66 KB | 0644 |
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m54xxpci.h | File | 6.13 KB | 0644 |
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m54xxsim.h | File | 3.8 KB | 0644 |
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mac_asc.h | File | 520 B | 0644 |
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mac_baboon.h | File | 999 B | 0644 |
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mac_iop.h | File | 5.37 KB | 0644 |
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mac_oss.h | File | 1.83 KB | 0644 |
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mac_psc.h | File | 7.25 KB | 0644 |
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mac_via.h | File | 11.44 KB | 0644 |
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machdep.h | File | 1.34 KB | 0644 |
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machines.h | File | 3.13 KB | 0644 |
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machw.h | File | 588 B | 0644 |
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macintosh.h | File | 2.02 KB | 0644 |
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macints.h | File | 3.28 KB | 0644 |
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math-emu.h | File | 6.74 KB | 0644 |
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mc146818rtc.h | File | 598 B | 0644 |
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mcf8390.h | File | 3.75 KB | 0644 |
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mcf_pgalloc.h | File | 2.37 KB | 0644 |
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mcf_pgtable.h | File | 9.89 KB | 0644 |
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mcfclk.h | File | 1.01 KB | 0644 |
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mcfdma.h | File | 6.51 KB | 0644 |
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mcfgpio.h | File | 8.48 KB | 0644 |
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mcfintc.h | File | 3.09 KB | 0644 |
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mcfmmu.h | File | 3.67 KB | 0644 |
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mcfpit.h | File | 2.22 KB | 0644 |
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mcfqspi.h | File | 1.82 KB | 0644 |
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mcfsim.h | File | 1.5 KB | 0644 |
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mcfslt.h | File | 1.21 KB | 0644 |
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mcftimer.h | File | 2.3 KB | 0644 |
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mcfuart.h | File | 6.91 KB | 0644 |
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mcfwdebug.h | File | 4.99 KB | 0644 |
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mmu.h | File | 243 B | 0644 |
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mmu_context.h | File | 7.2 KB | 0644 |
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mmzone.h | File | 264 B | 0644 |
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module.h | File | 847 B | 0644 |
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motorola_pgalloc.h | File | 2.26 KB | 0644 |
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motorola_pgtable.h | File | 9.2 KB | 0644 |
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movs.h | File | 1.44 KB | 0644 |
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mvme147hw.h | File | 2.81 KB | 0644 |
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mvme16xhw.h | File | 2.16 KB | 0644 |
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natfeat.h | File | 533 B | 0644 |
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nettel.h | File | 2.95 KB | 0644 |
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nubus.h | File | 1.21 KB | 0644 |
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openprom.h | File | 7.98 KB | 0644 |
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oplib.h | File | 9.54 KB | 0644 |
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page.h | File | 1.47 KB | 0644 |
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page_mm.h | File | 4.06 KB | 0644 |
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page_no.h | File | 1.28 KB | 0644 |
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page_offset.h | File | 256 B | 0644 |
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parport.h | File | 837 B | 0644 |
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pci.h | File | 458 B | 0644 |
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pgalloc.h | File | 444 B | 0644 |
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pgtable.h | File | 127 B | 0644 |
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pgtable_mm.h | File | 4.84 KB | 0644 |
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pgtable_no.h | File | 1.57 KB | 0644 |
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processor.h | File | 3.59 KB | 0644 |
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ptrace.h | File | 643 B | 0644 |
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q40_master.h | File | 2.28 KB | 0644 |
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q40ints.h | File | 749 B | 0644 |
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quicc_simple.h | File | 1.79 KB | 0644 |
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raw_io.h | File | 11.41 KB | 0644 |
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segment.h | File | 1.42 KB | 0644 |
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serial.h | File | 1.14 KB | 0644 |
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setup.h | File | 9.25 KB | 0644 |
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signal.h | File | 1.34 KB | 0644 |
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smp.h | File | 32 B | 0644 |
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string.h | File | 1.68 KB | 0644 |
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sun3-head.h | File | 353 B | 0644 |
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sun3_pgalloc.h | File | 2.26 KB | 0644 |
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sun3_pgtable.h | File | 7.65 KB | 0644 |
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sun3ints.h | File | 989 B | 0644 |
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sun3mmu.h | File | 4.91 KB | 0644 |
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sun3x.h | File | 868 B | 0644 |
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sun3xflop.h | File | 5.62 KB | 0644 |
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sun3xprom.h | File | 1.31 KB | 0644 |
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switch_to.h | File | 1.51 KB | 0644 |
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thread_info.h | File | 2.02 KB | 0644 |
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timex.h | File | 974 B | 0644 |
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tlb.h | File | 486 B | 0644 |
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tlbflush.h | File | 5.95 KB | 0644 |
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traps.h | File | 8.33 KB | 0644 |
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uaccess.h | File | 152 B | 0644 |
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uaccess_mm.h | File | 10.31 KB | 0644 |
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uaccess_no.h | File | 3.69 KB | 0644 |
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ucontext.h | File | 570 B | 0644 |
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unaligned.h | File | 600 B | 0644 |
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unistd.h | File | 952 B | 0644 |
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user.h | File | 3.78 KB | 0644 |
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vga.h | File | 651 B | 0644 |
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virtconvert.h | File | 947 B | 0644 |
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zorro.h | File | 1.17 KB | 0644 |
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