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8c7d14746a
Most if not all ARM PCI host controller device drivers either ignore the domain field in the pci_sys_data structure or just increment it every time a host controller is probed, using it as a domain counter. Therefore, instead of relying on pci_sys_data to stash the domain number in a standard location, ARM pcibios code can be moved to the newly introduced generic PCI domains code, implemented in commits:41e5c0f81d("of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()")670ba0c888("PCI: Add generic domain handling") ARM code is made to select PCI_DOMAINS_GENERIC by default, which builds core PCI code that assigns the domain number through the generic function: void pci_bus_assign_domain_nr(...) that relies on a DT property to define the domain number or falls back to a counter according to a predefined logic; its usage replaces the current domain assignment code in PCI host controllers present in the kernel. Tested-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Yijing Wang <wangyijing@huawei.com> Reviewed-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> # mvebu Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Phil Edworthy <phil.edworthy@renesas.com> Acked-by: Arnd Bergmann <arnd@arndb.de> CC: Mohit Kumar <mohit.kumar@st.com>
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
#ifndef ASMARM_PCI_H
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#define ASMARM_PCI_H
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#ifdef __KERNEL__
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#include <asm-generic/pci-dma-compat.h>
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#include <asm-generic/pci-bridge.h>
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#include <asm/mach/pci.h> /* for pci_sys_data */
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extern unsigned long pcibios_min_io;
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#define PCIBIOS_MIN_IO pcibios_min_io
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extern unsigned long pcibios_min_mem;
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#define PCIBIOS_MIN_MEM pcibios_min_mem
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static inline int pcibios_assign_all_busses(void)
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{
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return pci_has_flag(PCI_REASSIGN_ALL_RSRC);
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}
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#ifdef CONFIG_PCI_DOMAINS
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static inline int pci_proc_domain(struct pci_bus *bus)
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{
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return pci_domain_nr(bus);
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}
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#endif /* CONFIG_PCI_DOMAINS */
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/*
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* The PCI address space does equal the physical memory address space.
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* The networking and block device layers use this boolean for bounce
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* buffer decisions.
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*/
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#define PCI_DMA_BUS_IS_PHYS (1)
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#ifdef CONFIG_PCI
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static inline void pci_dma_burst_advice(struct pci_dev *pdev,
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enum pci_dma_burst_strategy *strat,
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unsigned long *strategy_parameter)
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{
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*strat = PCI_DMA_BURST_INFINITY;
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*strategy_parameter = ~0UL;
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}
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#endif
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#define HAVE_PCI_MMAP
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extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
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enum pci_mmap_state mmap_state, int write_combine);
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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 channel ? 15 : 14;
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}
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#endif /* __KERNEL__ */
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#endif
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