| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jan Glauber | 438 | 33.98% | 6 | 8.22% |
| Sebastian Ott | 372 | 28.86% | 27 | 36.99% |
| Niklas Schnelle | 171 | 13.27% | 17 | 23.29% |
| Pierre Morel | 148 | 11.48% | 7 | 9.59% |
| Matthew Rosato | 48 | 3.72% | 7 | 9.59% |
| Philipp Hachtmann | 42 | 3.26% | 1 | 1.37% |
| Joerg Roedel | 27 | 2.09% | 1 | 1.37% |
| Martin Schwidefsky | 21 | 1.63% | 2 | 2.74% |
| Gerald Schaefer | 9 | 0.70% | 1 | 1.37% |
| Linus Torvalds | 8 | 0.62% | 1 | 1.37% |
| Alexander Schmidt | 3 | 0.23% | 1 | 1.37% |
| Denis Efremov | 1 | 0.08% | 1 | 1.37% |
| Greg Kroah-Hartman | 1 | 0.08% | 1 | 1.37% |
| Total | 1289 | 73 |
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_S390_PCI_H #define __ASM_S390_PCI_H #include <linux/pci.h> #include <linux/mutex.h> #include <linux/iommu.h> #include <linux/pci_hotplug.h> #include <asm/pci_clp.h> #include <asm/pci_debug.h> #include <asm/pci_insn.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_NR_DMA_SPACES 1 #define ZPCI_NR_DEVICES CONFIG_PCI_NR_FUNCTIONS #define ZPCI_DOMAIN_BITMAP_SIZE (1 << 16) #ifdef PCI #if (ZPCI_NR_DEVICES > ZPCI_DOMAIN_BITMAP_SIZE) # error ZPCI_NR_DEVICES can not be bigger than ZPCI_DOMAIN_BITMAP_SIZE #endif #endif /* PCI */ /* 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_fmt3 { u64 tx_bytes; }; 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; struct zpci_fmb_fmt3 fmt3; }; } __packed __aligned(128); enum zpci_state { ZPCI_FN_STATE_STANDBY = 0, ZPCI_FN_STATE_CONFIGURED = 1, ZPCI_FN_STATE_RESERVED = 2, }; struct zpci_bar_struct { struct resource *res; /* bus resource */ void __iomem *mio_wb; void __iomem *mio_wt; u32 val; /* bar start & 3 flag bits */ u16 map_idx; /* index into bar mapping array */ u8 size; /* order 2 exponent */ }; struct s390_domain; struct kvm_zdev; #define ZPCI_FUNCTIONS_PER_BUS 256 struct zpci_bus { struct kref kref; struct pci_bus *bus; struct zpci_dev *function[ZPCI_FUNCTIONS_PER_BUS]; struct list_head resources; struct list_head bus_next; struct resource bus_resource; int pchid; int domain_nr; bool multifunction; enum pci_bus_speed max_bus_speed; }; /* Private data per function */ struct zpci_dev { struct zpci_bus *zbus; struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ struct list_head bus_next; struct kref kref; struct hotplug_slot hotplug_slot; enum zpci_state state; u32 fid; /* function ID, used by sclp */ u32 fh; /* function handle, used by insn's */ u32 gisa; /* GISA designation for passthrough */ u16 vfn; /* virtual function number */ u16 pchid; /* physical channel ID */ u16 maxstbl; /* Maximum store block size */ u8 pfgid; /* function group ID */ u8 pft; /* pci function type */ u8 port; u8 dtsm; /* Supported DT mask */ u8 rid_available : 1; u8 has_hp_slot : 1; u8 has_resources : 1; u8 is_physfn : 1; u8 util_str_avail : 1; u8 irqs_registered : 1; u8 reserved : 2; unsigned int devfn; /* DEVFN part of the RID*/ 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 */ unsigned int msi_first_bit; unsigned int msi_nr_irqs; 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]; bool mio_capable; struct zpci_bar_struct bars[PCI_STD_NUM_BARS]; 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; u8 version; enum pci_bus_speed max_bus_speed; struct dentry *debugfs_dev; /* IOMMU and passthrough */ struct s390_domain *s390_domain; /* s390 IOMMU domain data */ struct kvm_zdev *kzdev; struct mutex kzdev_lock; }; static inline bool zdev_enabled(struct zpci_dev *zdev) { return (zdev->fh & (1UL << 31)) ? true : false; } extern const struct attribute_group *zpci_attr_groups[]; extern unsigned int s390_pci_force_floating __initdata; extern unsigned int s390_pci_no_rid; extern union zpci_sic_iib *zpci_aipb; extern struct airq_iv *zpci_aif_sbv; /* ----------------------------------------------------------------------------- Prototypes ----------------------------------------------------------------------------- */ /* Base stuff */ struct zpci_dev *zpci_create_device(u32 fid, u32 fh, enum zpci_state state); int zpci_enable_device(struct zpci_dev *); int zpci_disable_device(struct zpci_dev *); int zpci_scan_configured_device(struct zpci_dev *zdev, u32 fh); int zpci_deconfigure_device(struct zpci_dev *zdev); void zpci_device_reserved(struct zpci_dev *zdev); bool zpci_is_device_configured(struct zpci_dev *zdev); int zpci_hot_reset_device(struct zpci_dev *zdev); 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); void zpci_update_fh(struct zpci_dev *zdev, u32 fh); /* CLP */ int clp_setup_writeback_mio(void); int clp_scan_pci_devices(void); int clp_query_pci_fn(struct zpci_dev *zdev); int clp_enable_fh(struct zpci_dev *zdev, u32 *fh, u8 nr_dma_as); int clp_disable_fh(struct zpci_dev *zdev, u32 *fh); int clp_get_state(u32 fid, enum zpci_state *state); int clp_refresh_fh(u32 fid, u32 *fh); /* UID */ void update_uid_checking(bool new); /* IOMMU Interface */ int zpci_init_iommu(struct zpci_dev *zdev); void zpci_destroy_iommu(struct zpci_dev *zdev); #ifdef CONFIG_PCI static inline bool zpci_use_mio(struct zpci_dev *zdev) { return static_branch_likely(&have_mio) && zdev->mio_capable; } /* Error handling and recovery */ void zpci_event_error(void *); void zpci_event_availability(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) {} #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) { struct zpci_bus *zbus = pdev->sysdata; return zbus->function[pdev->devfn]; } static inline struct zpci_dev *to_zpci_dev(struct device *dev) { return to_zpci(to_pci_dev(dev)); } struct zpci_dev *get_zdev_by_fid(u32); /* DMA */ int zpci_dma_init(void); void zpci_dma_exit(void); int zpci_dma_init_device(struct zpci_dev *zdev); int zpci_dma_exit_device(struct zpci_dev *zdev); /* IRQ */ int __init zpci_irq_init(void); void __init zpci_irq_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 *); /* Error handling */ int zpci_report_error(struct pci_dev *, struct zpci_report_error_header *); int zpci_clear_error_state(struct zpci_dev *zdev); int zpci_reset_load_store_blocked(struct zpci_dev *zdev); #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
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