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325ef1857f
This was used by the ide, scsi and networking code in the past to determine if they should bounce payloads. Now that the dma mapping always have to support dma to all physical memory (thanks to swiotlb for non-iommu systems) there is no need to this crude hack any more. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Palmer Dabbelt <palmer@sifive.com> (for riscv) Reviewed-by: Jens Axboe <axboe@kernel.dk>
42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __SPARC_PCI_H
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#define __SPARC_PCI_H
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#ifdef __KERNEL__
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#include <linux/dma-mapping.h>
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/* Can be used to override the logic in pci_scan_bus for skipping
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* already-configured bus numbers - to be used for buggy BIOSes
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* or architectures with incomplete PCI setup by the loader.
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*/
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#define pcibios_assign_all_busses() 0
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#define PCIBIOS_MIN_IO 0UL
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#define PCIBIOS_MIN_MEM 0UL
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#define PCI_IRQ_NONE 0xffffffff
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#endif /* __KERNEL__ */
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#ifndef CONFIG_LEON_PCI
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/* generic pci stuff */
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#include <asm-generic/pci.h>
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#else
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/*
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* On LEON PCI Memory space is mapped 1:1 with physical address space.
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*
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* I/O space is located at low 64Kbytes in PCI I/O space. The I/O addresses
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* are converted into CPU addresses to virtual addresses that are mapped with
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* MMU to the PCI Host PCI I/O space window which are translated to the low
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* 64Kbytes by the Host controller.
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*/
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static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
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{
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return PCI_IRQ_NONE;
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}
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#endif
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#endif /* __SPARC_PCI_H */
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