4f0e8eef77
Use the generic numa implementation to add NUMA support for RISC-V. This is based on Greentime's patch[1] but modified to use generic NUMA implementation and few more fixes. [1] https://lkml.org/lkml/2020/1/10/233 Co-developed-by: Greentime Hu <greentime.hu@sifive.com> Signed-off-by: Greentime Hu <greentime.hu@sifive.com> Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
52 lines
1020 B
C
52 lines
1020 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2016 SiFive
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*/
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#ifndef _ASM_RISCV_PCI_H
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#define _ASM_RISCV_PCI_H
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/dma-mapping.h>
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#include <asm/io.h>
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#define PCIBIOS_MIN_IO 0
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#define PCIBIOS_MIN_MEM 0
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/* RISC-V shim does not initialize PCI bus */
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#define pcibios_assign_all_busses() 1
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extern int isa_dma_bridge_buggy;
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#ifdef CONFIG_PCI
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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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/* no legacy IRQ on risc-v */
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return -ENODEV;
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}
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static inline int pci_proc_domain(struct pci_bus *bus)
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{
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/* always show the domain in /proc */
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return 1;
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}
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#ifdef CONFIG_NUMA
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static inline int pcibus_to_node(struct pci_bus *bus)
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{
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return dev_to_node(&bus->dev);
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}
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#ifndef cpumask_of_pcibus
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#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
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cpu_all_mask : \
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cpumask_of_node(pcibus_to_node(bus)))
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#endif
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#endif /* CONFIG_NUMA */
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#endif /* CONFIG_PCI */
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#endif /* _ASM_RISCV_PCI_H */
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