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11/17/2022 06:42:16 AM
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Kbuild
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airq.h
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alternative-asm.h
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alternative.h
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archrandom.h
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asm-prototypes.h
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crw.h
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gmap.h
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hardirq.h
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hugetlb.h
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irq.h
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irqflags.h
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itcw.h
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jump_label.h
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kdebug.h
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kprobes.h
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kvm_host.h
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kvm_para.h
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linkage.h
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livepatch.h
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lowcore.h
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mmu.h
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mmu_context.h
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mmzone.h
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nmi.h
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nospec-branch.h
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nospec-insn.h
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numa.h
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page-states.h
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page.h
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pci.h
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pci_clp.h
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pci_debug.h
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pci_dma.h
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pci_insn.h
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pci_io.h
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percpu.h
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perf_event.h
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pgalloc.h
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pgtable.h
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pkey.h
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preempt.h
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processor.h
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ptrace.h
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qdio.h
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reset.h
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runtime_instr.h
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schid.h
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sclp.h
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scsw.h
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seccomp.h
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sections.h
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segment.h
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serial.h
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set_memory.h
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setup.h
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shmparam.h
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signal.h
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sigp.h
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smp.h
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sparsemem.h
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spinlock.h
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spinlock_types.h
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stp.h
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string.h
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switch_to.h
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syscall.h
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sysinfo.h
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termios.h
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thread_info.h
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tlb.h
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tlbflush.h
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topology.h
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trace
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uaccess.h
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unistd.h
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user.h
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vtimer.h
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vx-insn.h
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xor.h
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Editing: pci.h
Close
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_S390_PCI_H #define __ASM_S390_PCI_H /* must be set before including asm-generic/pci.h */ #define PCI_DMA_BUS_IS_PHYS (0) /* must be set before including pci_clp.h */ #define PCI_BAR_COUNT 6 #include <linux/pci.h> #include <linux/mutex.h> #include <linux/iommu.h> #include <asm-generic/pci.h> #include <asm/pci_clp.h> #include <asm/pci_debug.h> #include <asm/sclp.h> #define PCIBIOS_MIN_IO 0x1000 #define PCIBIOS_MIN_MEM 0x10000000 #define pcibios_assign_all_busses() (0) void __iomem *pci_iomap(struct pci_dev *, int, unsigned long); void pci_iounmap(struct pci_dev *, void __iomem *); int pci_domain_nr(struct pci_bus *); int pci_proc_domain(struct pci_bus *); #define ZPCI_BUS_NR 0 /* default bus number */ #define ZPCI_DEVFN 0 /* default device number */ /* PCI Function Controls */ #define ZPCI_FC_FN_ENABLED 0x80 #define ZPCI_FC_ERROR 0x40 #define ZPCI_FC_BLOCKED 0x20 #define ZPCI_FC_DMA_ENABLED 0x10 #define ZPCI_FMB_DMA_COUNTER_VALID (1 << 23) struct zpci_fmb_fmt0 { u64 dma_rbytes; u64 dma_wbytes; }; struct zpci_fmb_fmt1 { u64 rx_bytes; u64 rx_packets; u64 tx_bytes; u64 tx_packets; }; struct zpci_fmb_fmt2 { u64 consumed_work_units; u64 max_work_units; }; struct zpci_fmb { u32 format : 8; u32 fmt_ind : 24; u32 samples; u64 last_update; /* common counters */ u64 ld_ops; u64 st_ops; u64 stb_ops; u64 rpcit_ops; /* format specific counters */ union { struct zpci_fmb_fmt0 fmt0; struct zpci_fmb_fmt1 fmt1; struct zpci_fmb_fmt2 fmt2; }; } __packed __aligned(128); enum zpci_state { ZPCI_FN_STATE_STANDBY = 0, ZPCI_FN_STATE_CONFIGURED = 1, ZPCI_FN_STATE_RESERVED = 2, ZPCI_FN_STATE_ONLINE = 3, }; struct zpci_bar_struct { struct resource *res; /* bus resource */ u32 val; /* bar start & 3 flag bits */ u16 map_idx; /* index into bar mapping array */ u8 size; /* order 2 exponent */ }; struct s390_domain; /* Private data per function */ struct zpci_dev { struct pci_bus *bus; struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ enum zpci_state state; u32 fid; /* function ID, used by sclp */ u32 fh; /* function handle, used by insn's */ u16 vfn; /* virtual function number */ u16 pchid; /* physical channel ID */ u8 pfgid; /* function group ID */ u8 pft; /* pci function type */ u16 domain; struct mutex lock; u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */ u32 uid; /* user defined id */ u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */ /* IRQ stuff */ u64 msi_addr; /* MSI address */ unsigned int max_msi; /* maximum number of MSI's */ struct airq_iv *aibv; /* adapter interrupt bit vector */ unsigned long aisb; /* number of the summary bit */ /* DMA stuff */ unsigned long *dma_table; spinlock_t dma_table_lock; int tlb_refresh; spinlock_t iommu_bitmap_lock; unsigned long *iommu_bitmap; unsigned long *lazy_bitmap; unsigned long iommu_size; unsigned long iommu_pages; unsigned int next_bit; struct iommu_device iommu_dev; /* IOMMU core handle */ char res_name[16]; struct zpci_bar_struct bars[PCI_BAR_COUNT]; u64 start_dma; /* Start of available DMA addresses */ u64 end_dma; /* End of available DMA addresses */ u64 dma_mask; /* DMA address space mask */ /* Function measurement block */ struct zpci_fmb *fmb; u16 fmb_update; /* update interval */ u16 fmb_length; /* software counters */ atomic64_t allocated_pages; atomic64_t mapped_pages; atomic64_t unmapped_pages; enum pci_bus_speed max_bus_speed; struct dentry *debugfs_dev; struct dentry *debugfs_perf; struct s390_domain *s390_domain; /* s390 IOMMU domain data */ }; static inline bool zdev_enabled(struct zpci_dev *zdev) { return (zdev->fh & (1UL << 31)) ? true : false; } extern const struct attribute_group *zpci_attr_groups[]; /* ----------------------------------------------------------------------------- Prototypes ----------------------------------------------------------------------------- */ /* Base stuff */ int zpci_create_device(struct zpci_dev *); void zpci_remove_device(struct zpci_dev *zdev); int zpci_enable_device(struct zpci_dev *); int zpci_disable_device(struct zpci_dev *); int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); int zpci_unregister_ioat(struct zpci_dev *, u8); void zpci_remove_reserved_devices(void); /* CLP */ int clp_scan_pci_devices(void); int clp_rescan_pci_devices(void); int clp_rescan_pci_devices_simple(u32 *fid); int clp_add_pci_device(u32, u32, int); int clp_enable_fh(struct zpci_dev *, u8); int clp_disable_fh(struct zpci_dev *); int clp_get_state(u32 fid, enum zpci_state *state); /* IOMMU Interface */ int zpci_init_iommu(struct zpci_dev *zdev); void zpci_destroy_iommu(struct zpci_dev *zdev); #ifdef CONFIG_PCI /* Error handling and recovery */ void zpci_event_error(void *); void zpci_event_availability(void *); void zpci_rescan(void); bool zpci_is_enabled(void); #else /* CONFIG_PCI */ static inline void zpci_event_error(void *e) {} static inline void zpci_event_availability(void *e) {} static inline void zpci_rescan(void) {} #endif /* CONFIG_PCI */ #ifdef CONFIG_HOTPLUG_PCI_S390 int zpci_init_slot(struct zpci_dev *); void zpci_exit_slot(struct zpci_dev *); #else /* CONFIG_HOTPLUG_PCI_S390 */ static inline int zpci_init_slot(struct zpci_dev *zdev) { return 0; } static inline void zpci_exit_slot(struct zpci_dev *zdev) {} #endif /* CONFIG_HOTPLUG_PCI_S390 */ /* Helpers */ static inline struct zpci_dev *to_zpci(struct pci_dev *pdev) { return pdev->sysdata; } struct zpci_dev *get_zdev_by_fid(u32); /* DMA */ int zpci_dma_init(void); void zpci_dma_exit(void); /* FMB */ int zpci_fmb_enable_device(struct zpci_dev *); int zpci_fmb_disable_device(struct zpci_dev *); /* Debug */ int zpci_debug_init(void); void zpci_debug_exit(void); void zpci_debug_init_device(struct zpci_dev *, const char *); void zpci_debug_exit_device(struct zpci_dev *); void zpci_debug_info(struct zpci_dev *, struct seq_file *); /* Error reporting */ int zpci_report_error(struct pci_dev *, struct zpci_report_error_header *); #ifdef CONFIG_NUMA /* Returns the node based on PCI bus */ static inline int __pcibus_to_node(const struct pci_bus *bus) { return NUMA_NO_NODE; } static inline const struct cpumask * cpumask_of_pcibus(const struct pci_bus *bus) { return cpu_online_mask; } #endif /* CONFIG_NUMA */ #endif