arch/riscv/include/asm/pci.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2016 SiFive
   4  */
   5
   6 #ifndef _ASM_RISCV_PCI_H
   7 #define _ASM_RISCV_PCI_H
   8
   9 #include <linux/types.h>
  10 #include <linux/slab.h>
  11 #include <linux/dma-mapping.h>
  12
  13 #include <asm/io.h>
  14
  15 #define PCIBIOS_MIN_IO          0
  16 #define PCIBIOS_MIN_MEM         0
  17
  18 /* RISC-V shim does not initialize PCI bus */
  19 #define pcibios_assign_all_busses() 1
  20
  21 extern int isa_dma_bridge_buggy;
  22
  23 #ifdef CONFIG_PCI
  24 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
  25 {
  26         /* no legacy IRQ on risc-v */
  27         return -ENODEV;
  28 }
  29
  30 static inline int pci_proc_domain(struct pci_bus *bus)
  31 {
  32         /* always show the domain in /proc */
  33         return 1;
  34 }
  35 #endif  /* CONFIG_PCI */
  36
  37 #endif  /* _ASM_RISCV_PCI_H */