mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-01-25 06:09:29 +07:00
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>
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __SPARC64_PCI_H
|
|
#define __SPARC64_PCI_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/dma-mapping.h>
|
|
|
|
/* Can be used to override the logic in pci_scan_bus for skipping
|
|
* already-configured bus numbers - to be used for buggy BIOSes
|
|
* or architectures with incomplete PCI setup by the loader.
|
|
*/
|
|
#define pcibios_assign_all_busses() 0
|
|
|
|
#define PCIBIOS_MIN_IO 0UL
|
|
#define PCIBIOS_MIN_MEM 0UL
|
|
|
|
#define PCI_IRQ_NONE 0xffffffff
|
|
|
|
/* PCI IOMMU mapping bypass support. */
|
|
|
|
/* PCI 64-bit addressing works for all slots on all controller
|
|
* types on sparc64. However, it requires that the device
|
|
* can drive enough of the 64 bits.
|
|
*/
|
|
#define PCI64_REQUIRED_MASK (~(u64)0)
|
|
#define PCI64_ADDR_BASE 0xfffc000000000000UL
|
|
|
|
/* Return the index of the PCI controller for device PDEV. */
|
|
|
|
int pci_domain_nr(struct pci_bus *bus);
|
|
static inline int pci_proc_domain(struct pci_bus *bus)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
/* Platform support for /proc/bus/pci/X/Y mmap()s. */
|
|
|
|
#define HAVE_PCI_MMAP
|
|
#define arch_can_pci_mmap_io() 1
|
|
#define HAVE_ARCH_PCI_GET_UNMAPPED_AREA
|
|
#define get_pci_unmapped_area get_fb_unmapped_area
|
|
|
|
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
|
|
{
|
|
return PCI_IRQ_NONE;
|
|
}
|
|
|
|
#define HAVE_ARCH_PCI_RESOURCE_TO_USER
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* __SPARC64_PCI_H */
|