/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _PARISC_DMA_MAPPING_H #define _PARISC_DMA_MAPPING_H #include <asm/cacheflush.h> /* ** We need to support 4 different coherent dma models with one binary: ** ** I/O MMU consistent method dma_sync behavior ** ============= ====================== ======================= ** a) PA-7x00LC uncachable host memory flush/purge ** b) U2/Uturn cachable host memory NOP ** c) Ike/Astro cachable host memory NOP ** d) EPIC/SAGA memory on EPIC/SAGA flush/reset DMA channel ** ** PA-7[13]00LC processors have a GSC bus interface and no I/O MMU. ** ** Systems (eg PCX-T workstations) that don't fall into the above ** categories will need to modify the needed drivers to perform ** flush/purge and allocate "regular" cacheable pages for everything. */ #ifdef CONFIG_PA11 extern const struct dma_map_ops pcxl_dma_ops; extern const struct dma_map_ops pcx_dma_ops; #endif extern const struct dma_map_ops *hppa_dma_ops; static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) { return hppa_dma_ops; } static inline void * parisc_walk_tree(struct device *dev) { struct device *otherdev; if(likely(dev->platform_data != NULL)) return dev->platform_data; /* OK, just traverse the bus to find it */ for(otherdev = dev->parent; otherdev; otherdev = otherdev->parent) { if(otherdev->platform_data) { dev->platform_data = otherdev->platform_data; break; } } return dev->platform_data; } #define GET_IOC(dev) ({ \ void *__pdata = parisc_walk_tree(dev); \ __pdata ? HBA_DATA(__pdata)->iommu : NULL; \ }) #ifdef CONFIG_IOMMU_CCIO struct parisc_device; struct ioc; void * ccio_get_iommu(const struct parisc_device *dev); int ccio_request_resource(const struct parisc_device *dev, struct resource *res); int ccio_allocate_resource(const struct parisc_device *dev, struct resource *res, unsigned long size, unsigned long min, unsigned long max, unsigned long align); #else /* !CONFIG_IOMMU_CCIO */ #define ccio_get_iommu(dev) NULL #define ccio_request_resource(dev, res) insert_resource(&iomem_resource, res) #define ccio_allocate_resource(dev, res, size, min, max, align) \ allocate_resource(&iomem_resource, res, size, min, max, \ align, NULL, NULL) #endif /* !CONFIG_IOMMU_CCIO */ #ifdef CONFIG_IOMMU_SBA struct parisc_device; void * sba_get_iommu(struct parisc_device *dev); #endif #endif
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Kbuild | File | 610 B | 0644 |
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agp.h | File | 596 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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asmregs.h | File | 3.04 KB | 0644 |
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assembly.h | File | 12.94 KB | 0644 |
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atomic.h | File | 8.24 KB | 0644 |
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barrier.h | File | 2.44 KB | 0644 |
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bitops.h | File | 5.89 KB | 0644 |
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bug.h | File | 2.35 KB | 0644 |
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bugs.h | File | 340 B | 0644 |
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cache.h | File | 1.59 KB | 0644 |
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cacheflush.h | File | 4.06 KB | 0644 |
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checksum.h | File | 5.48 KB | 0644 |
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cmpxchg.h | File | 3.62 KB | 0644 |
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compat.h | File | 6.52 KB | 0644 |
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compat_ucontext.h | File | 591 B | 0644 |
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delay.h | File | 533 B | 0644 |
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dma-mapping.h | File | 2.42 KB | 0644 |
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dma.h | File | 5.71 KB | 0644 |
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dwarf.h | File | 602 B | 0644 |
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eisa_bus.h | File | 702 B | 0644 |
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eisa_eeprom.h | File | 4.42 KB | 0644 |
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elf.h | File | 14.31 KB | 0644 |
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fb.h | File | 403 B | 0644 |
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fixmap.h | File | 1.15 KB | 0644 |
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floppy.h | File | 6.61 KB | 0644 |
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ftrace.h | File | 379 B | 0644 |
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futex.h | File | 2.66 KB | 0644 |
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grfioctl.h | File | 4.68 KB | 0644 |
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hardirq.h | File | 1.3 KB | 0644 |
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hardware.h | File | 4.09 KB | 0644 |
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hash.h | File | 5.07 KB | 0644 |
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hugetlb.h | File | 1.67 KB | 0644 |
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ide.h | File | 1.09 KB | 0644 |
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io.h | File | 8.14 KB | 0644 |
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irq.h | File | 1.23 KB | 0644 |
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irqflags.h | File | 1.02 KB | 0644 |
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kbdleds.h | File | 477 B | 0644 |
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kmap_types.h | File | 221 B | 0644 |
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ldcw.h | File | 2.15 KB | 0644 |
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led.h | File | 1.33 KB | 0644 |
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linkage.h | File | 759 B | 0644 |
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machdep.h | File | 349 B | 0644 |
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mckinley.h | File | 270 B | 0644 |
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mmu.h | File | 195 B | 0644 |
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mmu_context.h | File | 2.08 KB | 0644 |
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mmzone.h | File | 1.51 KB | 0644 |
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module.h | File | 527 B | 0644 |
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page.h | File | 5.42 KB | 0644 |
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parisc-device.h | File | 1.92 KB | 0644 |
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parport.h | File | 358 B | 0644 |
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pci.h | File | 6.57 KB | 0644 |
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pdc.h | File | 3.93 KB | 0644 |
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pdc_chassis.h | File | 15.06 KB | 0644 |
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pdcpat.h | File | 15 KB | 0644 |
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perf.h | File | 1.89 KB | 0644 |
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perf_event.h | File | 152 B | 0644 |
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pgalloc.h | File | 4.22 KB | 0644 |
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pgtable.h | File | 18.92 KB | 0644 |
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prefetch.h | File | 1.12 KB | 0644 |
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processor.h | File | 9.86 KB | 0644 |
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psw.h | File | 2.39 KB | 0644 |
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ptrace.h | File | 803 B | 0644 |
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ropes.h | File | 9.73 KB | 0644 |
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rt_sigframe.h | File | 745 B | 0644 |
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runway.h | File | 320 B | 0644 |
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sections.h | File | 283 B | 0644 |
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serial.h | File | 124 B | 0644 |
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shmparam.h | File | 263 B | 0644 |
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signal.h | File | 841 B | 0644 |
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smp.h | File | 1.25 KB | 0644 |
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socket.h | File | 311 B | 0644 |
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special_insns.h | File | 1015 B | 0644 |
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spinlock.h | File | 4.02 KB | 0644 |
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spinlock_types.h | File | 483 B | 0644 |
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string.h | File | 247 B | 0644 |
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superio.h | File | 3.25 KB | 0644 |
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switch_to.h | File | 332 B | 0644 |
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syscall.h | File | 1.4 KB | 0644 |
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termios.h | File | 1.72 KB | 0644 |
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thread_info.h | File | 3.15 KB | 0644 |
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timex.h | File | 372 B | 0644 |
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tlb.h | File | 672 B | 0644 |
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tlbflush.h | File | 2.63 KB | 0644 |
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topology.h | File | 900 B | 0644 |
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traps.h | File | 468 B | 0644 |
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uaccess.h | File | 6.55 KB | 0644 |
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ucontext.h | File | 327 B | 0644 |
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unaligned.h | File | 472 B | 0644 |
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unistd.h | File | 5.47 KB | 0644 |
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unwind.h | File | 2.56 KB | 0644 |
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