forked from luck/tmp_suning_uos_patched
294ee6f89c
Introduce an x86 specific indirect mechanism to setup MSIs. The MSI setup functions become function pointers in an x86_msi_ops struct, that defaults to the implementation in io_apic.c and msi.c. [v2: Use HAVE_DEFAULT_* knobs] Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
167 lines
4.1 KiB
C
167 lines
4.1 KiB
C
#ifndef _ASM_X86_PCI_H
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#define _ASM_X86_PCI_H
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#include <linux/mm.h> /* for struct page */
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <asm/scatterlist.h>
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#include <asm/io.h>
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#include <asm/x86_init.h>
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#ifdef __KERNEL__
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struct pci_sysdata {
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int domain; /* PCI domain */
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int node; /* NUMA node */
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#ifdef CONFIG_X86_64
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void *iommu; /* IOMMU private data */
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#endif
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};
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extern int pci_routeirq;
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extern int noioapicquirk;
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extern int noioapicreroute;
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/* scan a bus after allocating a pci_sysdata for it */
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extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
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int node);
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extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
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#ifdef CONFIG_PCI
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#ifdef CONFIG_PCI_DOMAINS
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static inline int pci_domain_nr(struct pci_bus *bus)
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{
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struct pci_sysdata *sd = bus->sysdata;
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return sd->domain;
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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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return pci_domain_nr(bus);
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}
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#endif
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/* Can be used to override the logic in pci_scan_bus for skipping
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already-configured bus numbers - to be used for buggy BIOSes
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or architectures with incomplete PCI setup by the loader */
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extern unsigned int pcibios_assign_all_busses(void);
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extern int pci_legacy_init(void);
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# ifdef CONFIG_ACPI
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# define x86_default_pci_init pci_acpi_init
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# else
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# define x86_default_pci_init pci_legacy_init
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# endif
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#else
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# define pcibios_assign_all_busses() 0
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# define x86_default_pci_init NULL
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#endif
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extern unsigned long pci_mem_start;
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#define PCIBIOS_MIN_IO 0x1000
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#define PCIBIOS_MIN_MEM (pci_mem_start)
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#define PCIBIOS_MIN_CARDBUS_IO 0x4000
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void pcibios_config_init(void);
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struct pci_bus *pcibios_scan_root(int bus);
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void pcibios_set_master(struct pci_dev *dev);
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void pcibios_penalize_isa_irq(int irq, int active);
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struct irq_routing_table *pcibios_get_irq_routing_table(void);
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int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
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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,
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int write_combine);
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#ifdef CONFIG_PCI
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extern void early_quirks(void);
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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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#else
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static inline void early_quirks(void) { }
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#endif
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extern void pci_iommu_alloc(void);
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#ifdef CONFIG_PCI_MSI
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/* MSI arch specific hooks */
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static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
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{
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return x86_msi.setup_msi_irqs(dev, nvec, type);
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}
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static inline void x86_teardown_msi_irqs(struct pci_dev *dev)
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{
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x86_msi.teardown_msi_irqs(dev);
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}
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static inline void x86_teardown_msi_irq(unsigned int irq)
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{
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x86_msi.teardown_msi_irq(irq);
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}
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#define arch_setup_msi_irqs x86_setup_msi_irqs
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#define arch_teardown_msi_irqs x86_teardown_msi_irqs
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#define arch_teardown_msi_irq x86_teardown_msi_irq
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/* implemented in arch/x86/kernel/apic/io_apic. */
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int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
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void native_teardown_msi_irq(unsigned int irq);
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/* default to the implementation in drivers/lib/msi.c */
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#define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
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void default_teardown_msi_irqs(struct pci_dev *dev);
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#else
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#define native_setup_msi_irqs NULL
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#define native_teardown_msi_irq NULL
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#define default_teardown_msi_irqs NULL
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#endif
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#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
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#endif /* __KERNEL__ */
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#ifdef CONFIG_X86_64
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#include "pci_64.h"
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#endif
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void dma32_reserve_bootmem(void);
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/* implement the pci_ DMA API in terms of the generic device dma_ one */
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#include <asm-generic/pci-dma-compat.h>
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/* generic pci stuff */
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#include <asm-generic/pci.h>
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#define PCIBIOS_MAX_MEM_32 0xffffffff
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#ifdef CONFIG_NUMA
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/* Returns the node based on pci bus */
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static inline int __pcibus_to_node(const struct pci_bus *bus)
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{
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const struct pci_sysdata *sd = bus->sysdata;
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return sd->node;
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}
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static inline const struct cpumask *
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cpumask_of_pcibus(const struct pci_bus *bus)
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{
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int node;
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node = __pcibus_to_node(bus);
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return (node == -1) ? cpu_online_mask :
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cpumask_of_node(node);
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}
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#endif
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#endif /* _ASM_X86_PCI_H */
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