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PCI: remove PCI_DMA_BUS_IS_PHYS

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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 <[email protected]>
Acked-by: Palmer Dabbelt <[email protected]> (for riscv)
Reviewed-by: Jens Axboe <[email protected]>
This commit is contained in:
Christoph Hellwig 2018-04-12 09:33:30 +02:00
commit 325ef1857f
31 changed files with 0 additions and 173 deletions
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5
arch/alpha/include/asm/pci.h
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@ -56,11 +56,6 @@ struct pci_controller {
/* IOMMU controls. */
/* The PCI address space does not equal the physical memory address space.
The networking and block device layers use this boolean for bounce buffer
decisions. */
#define PCI_DMA_BUS_IS_PHYS 0
/* TODO: integrate with include/asm-generic/pci.h ? */
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{