| /* |
| * pci.h |
| * |
| * PCI defines and function prototypes |
| * Copyright 1994, Drew Eckhardt |
| * Copyright 1997--1999 Martin Mares <mj@ucw.cz> |
| * |
| * For more information, please consult the following manuals (look at |
| * http://www.pcisig.com/ for how to get them): |
| * |
| * PCI BIOS Specification |
| * PCI Local Bus Specification |
| * PCI to PCI Bridge Specification |
| * PCI System Design Guide |
| */ |
| #ifndef LINUX_PCI_H |
| #define LINUX_PCI_H |
| |
| |
| #include <linux/mod_devicetable.h> |
| |
| #include <linux/types.h> |
| #include <linux/init.h> |
| #include <linux/ioport.h> |
| #include <linux/list.h> |
| #include <linux/compiler.h> |
| #include <linux/errno.h> |
| #include <linux/kobject.h> |
| #include <linux/atomic.h> |
| #include <linux/device.h> |
| #include <linux/interrupt.h> |
| #include <linux/io.h> |
| #include <linux/resource_ext.h> |
| #include <uapi/linux/pci.h> |
| |
| #include <linux/pci_ids.h> |
| |
| /* |
| * The PCI interface treats multi-function devices as independent |
| * devices. The slot/function address of each device is encoded |
| * in a single byte as follows: |
| * |
| * 7:3 = slot |
| * 2:0 = function |
| * |
| * PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() are defined in uapi/linux/pci.h. |
| * In the interest of not exposing interfaces to user-space unnecessarily, |
| * the following kernel-only defines are being added here. |
| */ |
| #define PCI_DEVID(bus, devfn) ((((u16)(bus)) << 8) | (devfn)) |
| /* return bus from PCI devid = ((u16)bus_number) << 8) | devfn */ |
| #define PCI_BUS_NUM(x) (((x) >> 8) & 0xff) |
| |
| /* pci_slot represents a physical slot */ |
| struct pci_slot { |
| struct pci_bus *bus; /* The bus this slot is on */ |
| struct list_head list; /* node in list of slots on this bus */ |
| struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */ |
| unsigned char number; /* PCI_SLOT(pci_dev->devfn) */ |
| struct kobject kobj; |
| }; |
| |
| static inline const char *pci_slot_name(const struct pci_slot *slot) |
| { |
| return kobject_name(&slot->kobj); |
| } |
| |
| /* File state for mmap()s on /proc/bus/pci/X/Y */ |
| enum pci_mmap_state { |
| pci_mmap_io, |
| pci_mmap_mem |
| }; |
| |
| /* |
| * For PCI devices, the region numbers are assigned this way: |
| */ |
| enum { |
| /* #0-5: standard PCI resources */ |
| PCI_STD_RESOURCES, |
| PCI_STD_RESOURCE_END = 5, |
| |
| /* #6: expansion ROM resource */ |
| PCI_ROM_RESOURCE, |
| |
| /* device specific resources */ |
| #ifdef CONFIG_PCI_IOV |
| PCI_IOV_RESOURCES, |
| PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1, |
| #endif |
| |
| /* resources assigned to buses behind the bridge */ |
| #define PCI_BRIDGE_RESOURCE_NUM 4 |
| |
| PCI_BRIDGE_RESOURCES, |
| PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES + |
| PCI_BRIDGE_RESOURCE_NUM - 1, |
| |
| /* total resources associated with a PCI device */ |
| PCI_NUM_RESOURCES, |
| |
| /* preserve this for compatibility */ |
| DEVICE_COUNT_RESOURCE = PCI_NUM_RESOURCES, |
| }; |
| |
| /* |
| * pci_power_t values must match the bits in the Capabilities PME_Support |
| * and Control/Status PowerState fields in the Power Management capability. |
| */ |
| typedef int __bitwise pci_power_t; |
| |
| #define PCI_D0 ((pci_power_t __force) 0) |
| #define PCI_D1 ((pci_power_t __force) 1) |
| #define PCI_D2 ((pci_power_t __force) 2) |
| #define PCI_D3hot ((pci_power_t __force) 3) |
| #define PCI_D3cold ((pci_power_t __force) 4) |
| #define PCI_UNKNOWN ((pci_power_t __force) 5) |
| #define PCI_POWER_ERROR ((pci_power_t __force) -1) |
| |
| /* Remember to update this when the list above changes! */ |
| extern const char *pci_power_names[]; |
| |
| static inline const char *pci_power_name(pci_power_t state) |
| { |
| return pci_power_names[1 + (__force int) state]; |
| } |
| |
| #define PCI_PM_D2_DELAY 200 |
| #define PCI_PM_D3_WAIT 10 |
| #define PCI_PM_D3COLD_WAIT 100 |
| #define PCI_PM_BUS_WAIT 50 |
| |
| /** The pci_channel state describes connectivity between the CPU and |
| * the pci device. If some PCI bus between here and the pci device |
| * has crashed or locked up, this info is reflected here. |
| */ |
| typedef unsigned int __bitwise pci_channel_state_t; |
| |
| enum pci_channel_state { |
| /* I/O channel is in normal state */ |
| pci_channel_io_normal = (__force pci_channel_state_t) 1, |
| |
| /* I/O to channel is blocked */ |
| pci_channel_io_frozen = (__force pci_channel_state_t) 2, |
| |
| /* PCI card is dead */ |
| pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, |
| }; |
| |
| typedef unsigned int __bitwise pcie_reset_state_t; |
| |
| enum pcie_reset_state { |
| /* Reset is NOT asserted (Use to deassert reset) */ |
| pcie_deassert_reset = (__force pcie_reset_state_t) 1, |
| |
| /* Use #PERST to reset PCIe device */ |
| pcie_warm_reset = (__force pcie_reset_state_t) 2, |
| |
| /* Use PCIe Hot Reset to reset device */ |
| pcie_hot_reset = (__force pcie_reset_state_t) 3 |
| }; |
| |
| typedef unsigned short __bitwise pci_dev_flags_t; |
| enum pci_dev_flags { |
| /* INTX_DISABLE in PCI_COMMAND register disables MSI |
| * generation too. |
| */ |
| PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) (1 << 0), |
| /* Device configuration is irrevocably lost if disabled into D3 */ |
| PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) (1 << 1), |
| /* Provide indication device is assigned by a Virtual Machine Manager */ |
| PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) (1 << 2), |
| /* Flag for quirk use to store if quirk-specific ACS is enabled */ |
| PCI_DEV_FLAGS_ACS_ENABLED_QUIRK = (__force pci_dev_flags_t) (1 << 3), |
| /* Use a PCIe-to-PCI bridge alias even if !pci_is_pcie */ |
| PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS = (__force pci_dev_flags_t) (1 << 5), |
| /* Do not use bus resets for device */ |
| PCI_DEV_FLAGS_NO_BUS_RESET = (__force pci_dev_flags_t) (1 << 6), |
| /* Do not use PM reset even if device advertises NoSoftRst- */ |
| PCI_DEV_FLAGS_NO_PM_RESET = (__force pci_dev_flags_t) (1 << 7), |
| /* Get VPD from function 0 VPD */ |
| PCI_DEV_FLAGS_VPD_REF_F0 = (__force pci_dev_flags_t) (1 << 8), |
| /* a non-root bridge where translation occurs, stop alias search here */ |
| PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT = (__force pci_dev_flags_t) (1 << 9), |
| /* Do not use FLR even if device advertises PCI_AF_CAP */ |
| PCI_DEV_FLAGS_NO_FLR_RESET = (__force pci_dev_flags_t) (1 << 10), |
| }; |
| |
| enum pci_irq_reroute_variant { |
| INTEL_IRQ_REROUTE_VARIANT = 1, |
| MAX_IRQ_REROUTE_VARIANTS = 3 |
| }; |
| |
| typedef unsigned short __bitwise pci_bus_flags_t; |
| enum pci_bus_flags { |
| PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, |
| PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, |
| PCI_BUS_FLAGS_NO_AERSID = (__force pci_bus_flags_t) 4, |
| }; |
| |
| /* These values come from the PCI Express Spec */ |
| enum pcie_link_width { |
| PCIE_LNK_WIDTH_RESRV = 0x00, |
| PCIE_LNK_X1 = 0x01, |
| PCIE_LNK_X2 = 0x02, |
| PCIE_LNK_X4 = 0x04, |
| PCIE_LNK_X8 = 0x08, |
| PCIE_LNK_X12 = 0x0C, |
| PCIE_LNK_X16 = 0x10, |
| PCIE_LNK_X32 = 0x20, |
| PCIE_LNK_WIDTH_UNKNOWN = 0xFF, |
| }; |
| |
| /* Based on the PCI Hotplug Spec, but some values are made up by us */ |
| enum pci_bus_speed { |
| PCI_SPEED_33MHz = 0x00, |
| PCI_SPEED_66MHz = 0x01, |
| PCI_SPEED_66MHz_PCIX = 0x02, |
| PCI_SPEED_100MHz_PCIX = 0x03, |
| PCI_SPEED_133MHz_PCIX = 0x04, |
| PCI_SPEED_66MHz_PCIX_ECC = 0x05, |
| PCI_SPEED_100MHz_PCIX_ECC = 0x06, |
| PCI_SPEED_133MHz_PCIX_ECC = 0x07, |
| PCI_SPEED_66MHz_PCIX_266 = 0x09, |
| PCI_SPEED_100MHz_PCIX_266 = 0x0a, |
| PCI_SPEED_133MHz_PCIX_266 = 0x0b, |
| AGP_UNKNOWN = 0x0c, |
| AGP_1X = 0x0d, |
| AGP_2X = 0x0e, |
| AGP_4X = 0x0f, |
| AGP_8X = 0x10, |
| PCI_SPEED_66MHz_PCIX_533 = 0x11, |
| PCI_SPEED_100MHz_PCIX_533 = 0x12, |
| PCI_SPEED_133MHz_PCIX_533 = 0x13, |
| PCIE_SPEED_2_5GT = 0x14, |
| PCIE_SPEED_5_0GT = 0x15, |
| PCIE_SPEED_8_0GT = 0x16, |
| PCI_SPEED_UNKNOWN = 0xff, |
| }; |
| |
| struct pci_cap_saved_data { |
| u16 cap_nr; |
| bool cap_extended; |
| unsigned int size; |
| u32 data[0]; |
| }; |
| |
| struct pci_cap_saved_state { |
| struct hlist_node next; |
| struct pci_cap_saved_data cap; |
| }; |
| |
| struct irq_affinity; |
| struct pcie_link_state; |
| struct pci_vpd; |
| struct pci_sriov; |
| struct pci_ats; |
| |
| /* |
| * The pci_dev structure is used to describe PCI devices. |
| */ |
| struct pci_dev { |
| struct list_head bus_list; /* node in per-bus list */ |
| struct pci_bus *bus; /* bus this device is on */ |
| struct pci_bus *subordinate; /* bus this device bridges to */ |
| |
| void *sysdata; /* hook for sys-specific extension */ |
| struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ |
| struct pci_slot *slot; /* Physical slot this device is in */ |
| |
| unsigned int devfn; /* encoded device & function index */ |
| unsigned short vendor; |
| unsigned short device; |
| unsigned short subsystem_vendor; |
| unsigned short subsystem_device; |
| unsigned int class; /* 3 bytes: (base,sub,prog-if) */ |
| u8 revision; /* PCI revision, low byte of class word */ |
| u8 hdr_type; /* PCI header type (`multi' flag masked out) */ |
| #ifdef CONFIG_PCIEAER |
| u16 aer_cap; /* AER capability offset */ |
| #endif |
| u8 pcie_cap; /* PCIe capability offset */ |
| u8 msi_cap; /* MSI capability offset */ |
| u8 msix_cap; /* MSI-X capability offset */ |
| u8 pcie_mpss:3; /* PCIe Max Payload Size Supported */ |
| u8 rom_base_reg; /* which config register controls the ROM */ |
| u8 pin; /* which interrupt pin this device uses */ |
| u16 pcie_flags_reg; /* cached PCIe Capabilities Register */ |
| unsigned long *dma_alias_mask;/* mask of enabled devfn aliases */ |
| |
| struct pci_driver *driver; /* which driver has allocated this device */ |
| u64 dma_mask; /* Mask of the bits of bus address this |
| device implements. Normally this is |
| 0xffffffff. You only need to change |
| this if your device has broken DMA |
| or supports 64-bit transfers. */ |
| |
| struct device_dma_parameters dma_parms; |
| |
| pci_power_t current_state; /* Current operating state. In ACPI-speak, |
| this is D0-D3, D0 being fully functional, |
| and D3 being off. */ |
| u8 pm_cap; /* PM capability offset */ |
| unsigned int pme_support:5; /* Bitmask of states from which PME# |
| can be generated */ |
| unsigned int pme_interrupt:1; |
| unsigned int pme_poll:1; /* Poll device's PME status bit */ |
| unsigned int d1_support:1; /* Low power state D1 is supported */ |
| unsigned int d2_support:1; /* Low power state D2 is supported */ |
| unsigned int no_d1d2:1; /* D1 and D2 are forbidden */ |
| unsigned int no_d3cold:1; /* D3cold is forbidden */ |
| unsigned int bridge_d3:1; /* Allow D3 for bridge */ |
| unsigned int d3cold_allowed:1; /* D3cold is allowed by user */ |
| unsigned int mmio_always_on:1; /* disallow turning off io/mem |
| decoding during bar sizing */ |
| unsigned int wakeup_prepared:1; |
| unsigned int runtime_d3cold:1; /* whether go through runtime |
| D3cold, not set for devices |
| powered on/off by the |
| corresponding bridge */ |
| unsigned int ignore_hotplug:1; /* Ignore hotplug events */ |
| unsigned int hotplug_user_indicators:1; /* SlotCtl indicators |
| controlled exclusively by |
| user sysfs */ |
| unsigned int d3_delay; /* D3->D0 transition time in ms */ |
| unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */ |
| |
| #ifdef CONFIG_PCIEASPM |
| struct pcie_link_state *link_state; /* ASPM link state */ |
| #endif |
| |
| pci_channel_state_t error_state; /* current connectivity state */ |
| struct device dev; /* Generic device interface */ |
| |
| int cfg_size; /* Size of configuration space */ |
| |
| /* |
| * Instead of touching interrupt line and base address registers |
| * directly, use the values stored here. They might be different! |
| */ |
| unsigned int irq; |
| struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ |
| |
| bool match_driver; /* Skip attaching driver */ |
| /* These fields are used by common fixups */ |
| unsigned int transparent:1; /* Subtractive decode PCI bridge */ |
| unsigned int multifunction:1;/* Part of multi-function device */ |
| /* keep track of device state */ |
| unsigned int is_added:1; |
| unsigned int is_busmaster:1; /* device is busmaster */ |
| unsigned int no_msi:1; /* device may not use msi */ |
| unsigned int no_64bit_msi:1; /* device may only use 32-bit MSIs */ |
| unsigned int block_cfg_access:1; /* config space access is blocked */ |
| unsigned int broken_parity_status:1; /* Device generates false positive parity */ |
| unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */ |
| unsigned int msi_enabled:1; |
| unsigned int msix_enabled:1; |
| unsigned int ari_enabled:1; /* ARI forwarding */ |
| unsigned int ats_enabled:1; /* Address Translation Service */ |
| unsigned int is_managed:1; |
| unsigned int needs_freset:1; /* Dev requires fundamental reset */ |
| unsigned int state_saved:1; |
| unsigned int is_physfn:1; |
| unsigned int is_virtfn:1; |
| unsigned int reset_fn:1; |
| unsigned int is_hotplug_bridge:1; |
| unsigned int is_thunderbolt:1; /* Thunderbolt controller */ |
| unsigned int __aer_firmware_first_valid:1; |
| unsigned int __aer_firmware_first:1; |
| unsigned int broken_intx_masking:1; |
| unsigned int io_window_1k:1; /* Intel P2P bridge 1K I/O windows */ |
| unsigned int irq_managed:1; |
| unsigned int has_secondary_link:1; |
| unsigned int non_compliant_bars:1; /* broken BARs; ignore them */ |
| pci_dev_flags_t dev_flags; |
| atomic_t enable_cnt; /* pci_enable_device has been called */ |
| |
| u32 saved_config_space[16]; /* config space saved at suspend time */ |
| struct hlist_head saved_cap_space; |
| struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ |
| int rom_attr_enabled; /* has display of the rom attribute been enabled? */ |
| struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ |
| struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */ |
| |
| #ifdef CONFIG_PCIE_PTM |
| unsigned int ptm_root:1; |
| unsigned int ptm_enabled:1; |
| u8 ptm_granularity; |
| #endif |
| #ifdef CONFIG_PCI_MSI |
| const struct attribute_group **msi_irq_groups; |
| #endif |
| struct pci_vpd *vpd; |
| #ifdef CONFIG_PCI_ATS |
| union { |
| struct pci_sriov *sriov; /* SR-IOV capability related */ |
| struct pci_dev *physfn; /* the PF this VF is associated with */ |
| }; |
| u16 ats_cap; /* ATS Capability offset */ |
| u8 ats_stu; /* ATS Smallest Translation Unit */ |
| atomic_t ats_ref_cnt; /* number of VFs with ATS enabled */ |
| #endif |
| phys_addr_t rom; /* Physical address of ROM if it's not from the BAR */ |
| size_t romlen; /* Length of ROM if it's not from the BAR */ |
| char *driver_override; /* Driver name to force a match */ |
| |
| unsigned long priv_flags; /* Private flags for the pci driver */ |
| }; |
| |
| static inline struct pci_dev *pci_physfn(struct pci_dev *dev) |
| { |
| #ifdef CONFIG_PCI_IOV |
| if (dev->is_virtfn) |
| dev = dev->physfn; |
| #endif |
| return dev; |
| } |
| |
| struct pci_dev *pci_alloc_dev(struct pci_bus *bus); |
| |
| #define to_pci_dev(n) container_of(n, struct pci_dev, dev) |
| #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) |
| |
| static inline int pci_channel_offline(struct pci_dev *pdev) |
| { |
| return (pdev->error_state != pci_channel_io_normal); |
| } |
| |
| struct pci_host_bridge { |
| struct device dev; |
| struct pci_bus *bus; /* root bus */ |
| struct pci_ops *ops; |
| void *sysdata; |
| int busnr; |
| struct list_head windows; /* resource_entry */ |
| void (*release_fn)(struct pci_host_bridge *); |
| void *release_data; |
| struct msi_controller *msi; |
| unsigned int ignore_reset_delay:1; /* for entire hierarchy */ |
| /* Resource alignment requirements */ |
| resource_size_t (*align_resource)(struct pci_dev *dev, |
| const struct resource *res, |
| resource_size_t start, |
| resource_size_t size, |
| resource_size_t align); |
| unsigned long private[0] ____cacheline_aligned; |
| }; |
| |
| #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev) |
| |
| static inline void *pci_host_bridge_priv(struct pci_host_bridge *bridge) |
| { |
| return (void *)bridge->private; |
| } |
| |
| static inline struct pci_host_bridge *pci_host_bridge_from_priv(void *priv) |
| { |
| return container_of(priv, struct pci_host_bridge, private); |
| } |
| |
| struct pci_host_bridge *pci_alloc_host_bridge(size_t priv); |
| int pci_register_host_bridge(struct pci_host_bridge *bridge); |
| struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus); |
| |
| void pci_set_host_bridge_release(struct pci_host_bridge *bridge, |
| void (*release_fn)(struct pci_host_bridge *), |
| void *release_data); |
| |
| int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge); |
| |
| /* |
| * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond |
| * to P2P or CardBus bridge windows) go in a table. Additional ones (for |
| * buses below host bridges or subtractive decode bridges) go in the list. |
| * Use pci_bus_for_each_resource() to iterate through all the resources. |
| */ |
| |
| /* |
| * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly |
| * and there's no way to program the bridge with the details of the window. |
| * This does not apply to ACPI _CRS windows, even with the _DEC subtractive- |
| * decode bit set, because they are explicit and can be programmed with _SRS. |
| */ |
| #define PCI_SUBTRACTIVE_DECODE 0x1 |
| |
| struct pci_bus_resource { |
| struct list_head list; |
| struct resource *res; |
| unsigned int flags; |
| }; |
| |
| #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ |
| |
| struct pci_bus { |
| struct list_head node; /* node in list of buses */ |
| struct pci_bus *parent; /* parent bus this bridge is on */ |
| struct list_head children; /* list of child buses */ |
| struct list_head devices; /* list of devices on this bus */ |
| struct pci_dev *self; /* bridge device as seen by parent */ |
| struct list_head slots; /* list of slots on this bus; |
| protected by pci_slot_mutex */ |
| struct resource *resource[PCI_BRIDGE_RESOURCE_NUM]; |
| struct list_head resources; /* address space routed to this bus */ |
| struct resource busn_res; /* bus numbers routed to this bus */ |
| |
| struct pci_ops *ops; /* configuration access functions */ |
| struct msi_controller *msi; /* MSI controller */ |
| void *sysdata; /* hook for sys-specific extension */ |
| struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ |
| |
| unsigned char number; /* bus number */ |
| unsigned char primary; /* number of primary bridge */ |
| unsigned char max_bus_speed; /* enum pci_bus_speed */ |
| unsigned char cur_bus_speed; /* enum pci_bus_speed */ |
| #ifdef CONFIG_PCI_DOMAINS_GENERIC |
| int domain_nr; |
| #endif |
| |
| char name[48]; |
| |
| unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ |
| pci_bus_flags_t bus_flags; /* inherited by child buses */ |
| struct device *bridge; |
| struct device dev; |
| struct bin_attribute *legacy_io; /* legacy I/O for this bus */ |
| struct bin_attribute *legacy_mem; /* legacy mem */ |
| unsigned int is_added:1; |
| }; |
| |
| #define to_pci_bus(n) container_of(n, struct pci_bus, dev) |
| |
| /* |
| * Returns true if the PCI bus is root (behind host-PCI bridge), |
| * false otherwise |
| * |
| * Some code assumes that "bus->self == NULL" means that bus is a root bus. |
| * This is incorrect because "virtual" buses added for SR-IOV (via |
| * virtfn_add_bus()) have "bus->self == NULL" but are not root buses. |
| */ |
| static inline bool pci_is_root_bus(struct pci_bus *pbus) |
| { |
| return !(pbus->parent); |
| } |
| |
| /** |
| * pci_is_bridge - check if the PCI device is a bridge |
| * @dev: PCI device |
| * |
| * Return true if the PCI device is bridge whether it has subordinate |
| * or not. |
| */ |
| static inline bool pci_is_bridge(struct pci_dev *dev) |
| { |
| return dev->hdr_type == PCI_HEADER_TYPE_BRIDGE || |
| dev->hdr_type == PCI_HEADER_TYPE_CARDBUS; |
| } |
| |
| static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev) |
| { |
| dev = pci_physfn(dev); |
| if (pci_is_root_bus(dev->bus)) |
| return NULL; |
| |
| return dev->bus->self; |
| } |
| |
| struct device *pci_get_host_bridge_device(struct pci_dev *dev); |
| void pci_put_host_bridge_device(struct device *dev); |
| |
| #ifdef CONFIG_PCI_MSI |
| static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) |
| { |
| return pci_dev->msi_enabled || pci_dev->msix_enabled; |
| } |
| #else |
| static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; } |
| #endif |
| |
| /* |
| * Error values that may be returned by PCI functions. |
| */ |
| #define PCIBIOS_SUCCESSFUL 0x00 |
| #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 |
| #define PCIBIOS_BAD_VENDOR_ID 0x83 |
| #define PCIBIOS_DEVICE_NOT_FOUND 0x86 |
| #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 |
| #define PCIBIOS_SET_FAILED 0x88 |
| #define PCIBIOS_BUFFER_TOO_SMALL 0x89 |
| |
| /* |
| * Translate above to generic errno for passing back through non-PCI code. |
| */ |
| static inline int pcibios_err_to_errno(int err) |
| { |
| if (err <= PCIBIOS_SUCCESSFUL) |
| return err; /* Assume already errno */ |
| |
| switch (err) { |
| case PCIBIOS_FUNC_NOT_SUPPORTED: |
| return -ENOENT; |
| case PCIBIOS_BAD_VENDOR_ID: |
| return -ENOTTY; |
| case PCIBIOS_DEVICE_NOT_FOUND: |
| return -ENODEV; |
| case PCIBIOS_BAD_REGISTER_NUMBER: |
| return -EFAULT; |
| case PCIBIOS_SET_FAILED: |
| return -EIO; |
| case PCIBIOS_BUFFER_TOO_SMALL: |
| return -ENOSPC; |
| } |
| |
| return -ERANGE; |
| } |
| |
| /* Low-level architecture-dependent routines */ |
| |
| struct pci_ops { |
| int (*add_bus)(struct pci_bus *bus); |
| void (*remove_bus)(struct pci_bus *bus); |
| void __iomem *(*map_bus)(struct pci_bus *bus, unsigned int devfn, int where); |
| int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); |
| int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); |
| }; |
| |
| /* |
| * ACPI needs to be able to access PCI config space before we've done a |
| * PCI bus scan and created pci_bus structures. |
| */ |
| int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, |
| int reg, int len, u32 *val); |
| int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, |
| int reg, int len, u32 val); |
| |
| #ifdef CONFIG_PCI_BUS_ADDR_T_64BIT |
| typedef u64 pci_bus_addr_t; |
| #else |
| typedef u32 pci_bus_addr_t; |
| #endif |
| |
| struct pci_bus_region { |
| pci_bus_addr_t start; |
| pci_bus_addr_t end; |
| }; |
| |
| struct pci_dynids { |
| spinlock_t lock; /* protects list, index */ |
| struct list_head list; /* for IDs added at runtime */ |
| }; |
| |
| |
| /* |
| * PCI Error Recovery System (PCI-ERS). If a PCI device driver provides |
| * a set of callbacks in struct pci_error_handlers, that device driver |
| * will be notified of PCI bus errors, and will be driven to recovery |
| * when an error occurs. |
| */ |
| |
| typedef unsigned int __bitwise pci_ers_result_t; |
| |
| enum pci_ers_result { |
| /* no result/none/not supported in device driver */ |
| PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, |
| |
| /* Device driver can recover without slot reset */ |
| PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, |
| |
| /* Device driver wants slot to be reset. */ |
| PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, |
| |
| /* Device has completely failed, is unrecoverable */ |
| PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, |
| |
| /* Device driver is fully recovered and operational */ |
| PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, |
| |
| /* No AER capabilities registered for the driver */ |
| PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6, |
| }; |
| |
| /* PCI bus error event callbacks */ |
| struct pci_error_handlers { |
| /* PCI bus error detected on this device */ |
| pci_ers_result_t (*error_detected)(struct pci_dev *dev, |
| enum pci_channel_state error); |
| |
| /* MMIO has been re-enabled, but not DMA */ |
| pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); |
| |
| /* PCI slot has been reset */ |
| pci_ers_result_t (*slot_reset)(struct pci_dev *dev); |
| |
| /* PCI function reset prepare or completed */ |
| void (*reset_notify)(struct pci_dev *dev, bool prepare); |
| |
| /* Device driver may resume normal operations */ |
| void (*resume)(struct pci_dev *dev); |
| }; |
| |
| |
| struct module; |
| struct pci_driver { |
| struct list_head node; |
| const char *name; |
| const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ |
| int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ |
| void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ |
| int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ |
| int (*suspend_late) (struct pci_dev *dev, pm_message_t state); |
| int (*resume_early) (struct pci_dev *dev); |
| int (*resume) (struct pci_dev *dev); /* Device woken up */ |
| void (*shutdown) (struct pci_dev *dev); |
| int (*sriov_configure) (struct pci_dev *dev, int num_vfs); /* PF pdev */ |
| const struct pci_error_handlers *err_handler; |
| struct device_driver driver; |
| struct pci_dynids dynids; |
| }; |
| |
| #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) |
| |
| /** |
| * PCI_DEVICE - macro used to describe a specific pci device |
| * @vend: the 16 bit PCI Vendor ID |
| * @dev: the 16 bit PCI Device ID |
| * |
| * This macro is used to create a struct pci_device_id that matches a |
| * specific device. The subvendor and subdevice fields will be set to |
| * PCI_ANY_ID. |
| */ |
| #define PCI_DEVICE(vend,dev) \ |
| .vendor = (vend), .device = (dev), \ |
| .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
| |
| /** |
| * PCI_DEVICE_SUB - macro used to describe a specific pci device with subsystem |
| * @vend: the 16 bit PCI Vendor ID |
| * @dev: the 16 bit PCI Device ID |
| * @subvend: the 16 bit PCI Subvendor ID |
| * @subdev: the 16 bit PCI Subdevice ID |
| * |
| * This macro is used to create a struct pci_device_id that matches a |
| * specific device with subsystem information. |
| */ |
| #define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \ |
| .vendor = (vend), .device = (dev), \ |
| .subvendor = (subvend), .subdevice = (subdev) |
| |
| /** |
| * PCI_DEVICE_CLASS - macro used to describe a specific pci device class |
| * @dev_class: the class, subclass, prog-if triple for this device |
| * @dev_class_mask: the class mask for this device |
| * |
| * This macro is used to create a struct pci_device_id that matches a |
| * specific PCI class. The vendor, device, subvendor, and subdevice |
| * fields will be set to PCI_ANY_ID. |
| */ |
| #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ |
| .class = (dev_class), .class_mask = (dev_class_mask), \ |
| .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ |
| .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
| |
| /** |
| * PCI_VDEVICE - macro used to describe a specific pci device in short form |
| * @vend: the vendor name |
| * @dev: the 16 bit PCI Device ID |
| * |
| * This macro is used to create a struct pci_device_id that matches a |
| * specific PCI device. The subvendor, and subdevice fields will be set |
| * to PCI_ANY_ID. The macro allows the next field to follow as the device |
| * private data. |
| */ |
| |
| #define PCI_VDEVICE(vend, dev) \ |
| .vendor = PCI_VENDOR_ID_##vend, .device = (dev), \ |
| .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0 |
| |
| enum { |
| PCI_REASSIGN_ALL_RSRC = 0x00000001, /* ignore firmware setup */ |
| PCI_REASSIGN_ALL_BUS = 0x00000002, /* reassign all bus numbers */ |
| PCI_PROBE_ONLY = 0x00000004, /* use existing setup */ |
| PCI_CAN_SKIP_ISA_ALIGN = 0x00000008, /* don't do ISA alignment */ |
| PCI_ENABLE_PROC_DOMAINS = 0x00000010, /* enable domains in /proc */ |
| PCI_COMPAT_DOMAIN_0 = 0x00000020, /* ... except domain 0 */ |
| PCI_SCAN_ALL_PCIE_DEVS = 0x00000040, /* scan all, not just dev 0 */ |
| }; |
| |
| /* these external functions are only available when PCI support is enabled */ |
| #ifdef CONFIG_PCI |
| |
| extern unsigned int pci_flags; |
| |
| static inline void pci_set_flags(int flags) { pci_flags = flags; } |
| static inline void pci_add_flags(int flags) { pci_flags |= flags; } |
| static inline void pci_clear_flags(int flags) { pci_flags &= ~flags; } |
| static inline int pci_has_flag(int flag) { return pci_flags & flag; } |
| |
| void pcie_bus_configure_settings(struct pci_bus *bus); |
| |
| enum pcie_bus_config_types { |
| PCIE_BUS_TUNE_OFF, /* don't touch MPS at all */ |
| PCIE_BUS_DEFAULT, /* ensure MPS matches upstream bridge */ |
| PCIE_BUS_SAFE, /* use largest MPS boot-time devices support */ |
| PCIE_BUS_PERFORMANCE, /* use MPS and MRRS for best performance */ |
| PCIE_BUS_PEER2PEER, /* set MPS = 128 for all devices */ |
| }; |
| |
| extern enum pcie_bus_config_types pcie_bus_config; |
| |
| extern struct bus_type pci_bus_type; |
| |
| /* Do NOT directly access these two variables, unless you are arch-specific PCI |
| * code, or PCI core code. */ |
| extern struct list_head pci_root_buses; /* list of all known PCI buses */ |
| /* Some device drivers need know if PCI is initiated */ |
| int no_pci_devices(void); |
| |
| void pcibios_resource_survey_bus(struct pci_bus *bus); |
| void pcibios_bus_add_device(struct pci_dev *pdev); |
| void pcibios_add_bus(struct pci_bus *bus); |
| void pcibios_remove_bus(struct pci_bus *bus); |
| void pcibios_fixup_bus(struct pci_bus *); |
| int __must_check pcibios_enable_device(struct pci_dev *, int mask); |
| /* Architecture-specific versions may override this (weak) */ |
| char *pcibios_setup(char *str); |
| |
| /* Used only when drivers/pci/setup.c is used */ |
| resource_size_t pcibios_align_resource(void *, const struct resource *, |
| resource_size_t, |
| resource_size_t); |
| void pcibios_update_irq(struct pci_dev *, int irq); |
| |
| /* Weak but can be overriden by arch */ |
| void pci_fixup_cardbus(struct pci_bus *); |
| |
| /* Generic PCI functions used internally */ |
| |
| void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region, |
| struct resource *res); |
| void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, |
| struct pci_bus_region *region); |
| void pcibios_scan_specific_bus(int busn); |
| struct pci_bus *pci_find_bus(int domain, int busnr); |
| void pci_bus_add_devices(const struct pci_bus *bus); |
| struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata); |
| struct pci_bus *pci_create_root_bus(struct device *parent, int bus, |
| struct pci_ops *ops, void *sysdata, |
| struct list_head *resources); |
| int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax); |
| int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax); |
| void pci_bus_release_busn_res(struct pci_bus *b); |
| struct pci_bus *pci_scan_root_bus_msi(struct device *parent, int bus, |
| struct pci_ops *ops, void *sysdata, |
| struct list_head *resources, |
| struct msi_controller *msi); |
| struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, |
| struct pci_ops *ops, void *sysdata, |
| struct list_head *resources); |
| struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, |
| int busnr); |
| void pcie_update_link_speed(struct pci_bus *bus, u16 link_status); |
| struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, |
| const char *name, |
| struct hotplug_slot *hotplug); |
| void pci_destroy_slot(struct pci_slot *slot); |
| #ifdef CONFIG_SYSFS |
| void pci_dev_assign_slot(struct pci_dev *dev); |
| #else |
| static inline void pci_dev_assign_slot(struct pci_dev *dev) { } |
| #endif |
| int pci_scan_slot(struct pci_bus *bus, int devfn); |
| struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn); |
| void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
| unsigned int pci_scan_child_bus(struct pci_bus *bus); |
| void pci_bus_add_device(struct pci_dev *dev); |
| void pci_read_bridge_bases(struct pci_bus *child); |
| struct resource *pci_find_parent_resource(const struct pci_dev *dev, |
| struct resource *res); |
| struct pci_dev *pci_find_pcie_root_port(struct pci_dev *dev); |
| u8 pci_swizzle_interrupt_pin(const struct pci_dev *dev, u8 pin); |
| int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); |
| u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); |
| struct pci_dev *pci_dev_get(struct pci_dev *dev); |
| void pci_dev_put(struct pci_dev *dev); |
| void pci_remove_bus(struct pci_bus *b); |
| void pci_stop_and_remove_bus_device(struct pci_dev *dev); |
| void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev); |
| void pci_stop_root_bus(struct pci_bus *bus); |
| void pci_remove_root_bus(struct pci_bus *bus); |
| void pci_setup_cardbus(struct pci_bus *bus); |
| void pcibios_setup_bridge(struct pci_bus *bus, unsigned long type); |
| void pci_sort_breadthfirst(void); |
| #define dev_is_pci(d) ((d)->bus == &pci_bus_type) |
| #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false)) |
| |
| /* Generic PCI functions exported to card drivers */ |
| |
| enum pci_lost_interrupt_reason { |
| PCI_LOST_IRQ_NO_INFORMATION = 0, |
| PCI_LOST_IRQ_DISABLE_MSI, |
| PCI_LOST_IRQ_DISABLE_MSIX, |
| PCI_LOST_IRQ_DISABLE_ACPI, |
| }; |
| enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev); |
| int pci_find_capability(struct pci_dev *dev, int cap); |
| int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); |
| int pci_find_ext_capability(struct pci_dev *dev, int cap); |
| int pci_find_next_ext_capability(struct pci_dev *dev, int pos, int cap); |
| int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); |
| int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); |
| struct pci_bus *pci_find_next_bus(const struct pci_bus *from); |
| |
| struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, |
| struct pci_dev *from); |
| struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, |
| unsigned int ss_vendor, unsigned int ss_device, |
| struct pci_dev *from); |
| struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); |
| struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus, |
| unsigned int devfn); |
| static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, |
| unsigned int devfn) |
| { |
| return pci_get_domain_bus_and_slot(0, bus, devfn); |
| } |
| struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); |
| int pci_dev_present(const struct pci_device_id *ids); |
| |
| int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, |
| int where, u8 *val); |
| int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn, |
| int where, u16 *val); |
| int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn, |
| int where, u32 *val); |
| int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn, |
| int where, u8 val); |
| int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn, |
| int where, u16 val); |
| int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn, |
| int where, u32 val); |
| |
| int pci_generic_config_read(struct pci_bus *bus, unsigned int devfn, |
| int where, int size, u32 *val); |
| int pci_generic_config_write(struct pci_bus *bus, unsigned int devfn, |
| int where, int size, u32 val); |
| int pci_generic_config_read32(struct pci_bus *bus, unsigned int devfn, |
| int where, int size, u32 *val); |
| int pci_generic_config_write32(struct pci_bus *bus, unsigned int devfn, |
| int where, int size, u32 val); |
| |
| struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops); |
| |
| int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val); |
| int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val); |
| int pci_read_config_dword(const struct pci_dev *dev, int where, u32 *val); |
| int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val); |
| int pci_write_config_word(const struct pci_dev *dev, int where, u16 val); |
| int pci_write_config_dword(const struct pci_dev *dev, int where, u32 val); |
| |
| int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val); |
| int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val); |
| int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val); |
| int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val); |
| int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos, |
| u16 clear, u16 set); |
| int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos, |
| u32 clear, u32 set); |
| |
| static inline int pcie_capability_set_word(struct pci_dev *dev, int pos, |
| u16 set) |
| { |
| return pcie_capability_clear_and_set_word(dev, pos, 0, set); |
| } |
| |
| static inline int pcie_capability_set_dword(struct pci_dev *dev, int pos, |
| u32 set) |
| { |
| return pcie_capability_clear_and_set_dword(dev, pos, 0, set); |
| } |
| |
| static inline int pcie_capability_clear_word(struct pci_dev *dev, int pos, |
| u16 clear) |
| { |
| return pcie_capability_clear_and_set_word(dev, pos, clear, 0); |
| } |
| |
| static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos, |
| u32 clear) |
| { |
| return pcie_capability_clear_and_set_dword(dev, pos, clear, 0); |
| } |
| |
| /* user-space driven config access */ |
| int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); |
| int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val); |
| int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val); |
| int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val); |
| int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val); |
| int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val); |
| |
| int __must_check pci_enable_device(struct pci_dev *dev); |
| int __must_check pci_enable_device_io(struct pci_dev *dev); |
| int __must_check pci_enable_device_mem(struct pci_dev *dev); |
| int __must_check pci_reenable_device(struct pci_dev *); |
| int __must_check pcim_enable_device(struct pci_dev *pdev); |
| void pcim_pin_device(struct pci_dev *pdev); |
| |
| static inline int pci_is_enabled(struct pci_dev *pdev) |
| { |
| return (atomic_read(&pdev->enable_cnt) > 0); |
| } |
| |
| static inline int pci_is_managed(struct pci_dev *pdev) |
| { |
| return pdev->is_managed; |
| } |
| |
| void pci_disable_device(struct pci_dev *dev); |
| |
| extern unsigned int pcibios_max_latency; |
| void pci_set_master(struct pci_dev *dev); |
| void pci_clear_master(struct pci_dev *dev); |
| |
| int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); |
| int pci_set_cacheline_size(struct pci_dev *dev); |
| #define HAVE_PCI_SET_MWI |
| int __must_check pci_set_mwi(struct pci_dev *dev); |
| int pci_try_set_mwi(struct pci_dev *dev); |
| void pci_clear_mwi(struct pci_dev *dev); |
| void pci_intx(struct pci_dev *dev, int enable); |
| bool pci_intx_mask_supported(struct pci_dev *dev); |
| bool pci_check_and_mask_intx(struct pci_dev *dev); |
| bool pci_check_and_unmask_intx(struct pci_dev *dev); |
| int pci_wait_for_pending(struct pci_dev *dev, int pos, u16 mask); |
| int pci_wait_for_pending_transaction(struct pci_dev *dev); |
| int pcix_get_max_mmrbc(struct pci_dev *dev); |
| int pcix_get_mmrbc(struct pci_dev *dev); |
| int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); |
| int pcie_get_readrq(struct pci_dev *dev); |
| int pcie_set_readrq(struct pci_dev *dev, int rq); |
| int pcie_get_mps(struct pci_dev *dev); |
| int pcie_set_mps(struct pci_dev *dev, int mps); |
| int pcie_get_minimum_link(struct pci_dev *dev, enum pci_bus_speed *speed, |
| enum pcie_link_width *width); |
| void pcie_flr(struct pci_dev *dev); |
| int __pci_reset_function(struct pci_dev *dev); |
| int __pci_reset_function_locked(struct pci_dev *dev); |
| int pci_reset_function(struct pci_dev *dev); |
| int pci_try_reset_function(struct pci_dev *dev); |
| int pci_probe_reset_slot(struct pci_slot *slot); |
| int pci_reset_slot(struct pci_slot *slot); |
| int pci_try_reset_slot(struct pci_slot *slot); |
| int pci_probe_reset_bus(struct pci_bus *bus); |
| int pci_reset_bus(struct pci_bus *bus); |
| int pci_try_reset_bus(struct pci_bus *bus); |
| void pci_reset_secondary_bus(struct pci_dev *dev); |
| void pcibios_reset_secondary_bus(struct pci_dev *dev); |
| void pci_reset_bridge_secondary_bus(struct pci_dev *dev); |
| void pci_update_resource(struct pci_dev *dev, int resno); |
| int __must_check pci_assign_resource(struct pci_dev *dev, int i); |
| int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align); |
| int pci_select_bars(struct pci_dev *dev, unsigned long flags); |
| bool pci_device_is_present(struct pci_dev *pdev); |
| void pci_ignore_hotplug(struct pci_dev *dev); |
| |
| int __printf(6, 7) pci_request_irq(struct pci_dev *dev, unsigned int nr, |
| irq_handler_t handler, irq_handler_t thread_fn, void *dev_id, |
| const char *fmt, ...); |
| void pci_free_irq(struct pci_dev *dev, unsigned int nr, void *dev_id); |
| |
| /* ROM control related routines */ |
| int pci_enable_rom(struct pci_dev *pdev); |
| void pci_disable_rom(struct pci_dev *pdev); |
| void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); |
| void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
| size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size); |
| void __iomem __must_check *pci_platform_rom(struct pci_dev *pdev, size_t *size); |
| |
| /* Power management related routines */ |
| int pci_save_state(struct pci_dev *dev); |
| void pci_restore_state(struct pci_dev *dev); |
| struct pci_saved_state *pci_store_saved_state(struct pci_dev *dev); |
| int pci_load_saved_state(struct pci_dev *dev, |
| struct pci_saved_state *state); |
| int pci_load_and_free_saved_state(struct pci_dev *dev, |
| struct pci_saved_state **state); |
| struct pci_cap_saved_state *pci_find_saved_cap(struct pci_dev *dev, char cap); |
| struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev, |
| u16 cap); |
| int pci_add_cap_save_buffer(struct pci_dev *dev, char cap, unsigned int size); |
| int pci_add_ext_cap_save_buffer(struct pci_dev *dev, |
| u16 cap, unsigned int size); |
| int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state); |
| int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
| pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); |
| bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); |
| void pci_pme_active(struct pci_dev *dev, bool enable); |
| int __pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
| bool runtime, bool enable); |
| int pci_wake_from_d3(struct pci_dev *dev, bool enable); |
| int pci_prepare_to_sleep(struct pci_dev *dev); |
| int pci_back_from_sleep(struct pci_dev *dev); |
| bool pci_dev_run_wake(struct pci_dev *dev); |
| bool pci_check_pme_status(struct pci_dev *dev); |
| void pci_pme_wakeup_bus(struct pci_bus *bus); |
| void pci_d3cold_enable(struct pci_dev *dev); |
| void pci_d3cold_disable(struct pci_dev *dev); |
| |
| static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
| bool enable) |
| { |
| return __pci_enable_wake(dev, state, false, enable); |
| } |
| |
| /* PCI Virtual Channel */ |
| int pci_save_vc_state(struct pci_dev *dev); |
| void pci_restore_vc_state(struct pci_dev *dev); |
| void pci_allocate_vc_save_buffers(struct pci_dev *dev); |
| |
| /* For use by arch with custom probe code */ |
| void set_pcie_port_type(struct pci_dev *pdev); |
| void set_pcie_hotplug_bridge(struct pci_dev *pdev); |
| |
| /* Functions for PCI Hotplug drivers to use */ |
| int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); |
| unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge); |
| unsigned int pci_rescan_bus(struct pci_bus *bus); |
| void pci_lock_rescan_remove(void); |
| void pci_unlock_rescan_remove(void); |
| |
| /* Vital product data routines */ |
| ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); |
| ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); |
| int pci_set_vpd_size(struct pci_dev *dev, size_t len); |
| |
| /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ |
| resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx); |
| void pci_bus_assign_resources(const struct pci_bus *bus); |
| void pci_bus_claim_resources(struct pci_bus *bus); |
| void pci_bus_size_bridges(struct pci_bus *bus); |
| int pci_claim_resource(struct pci_dev *, int); |
| int pci_claim_bridge_resource(struct pci_dev *bridge, int i); |
| void pci_assign_unassigned_resources(void); |
| void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge); |
| void pci_assign_unassigned_bus_resources(struct pci_bus *bus); |
| void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus); |
| void pdev_enable_device(struct pci_dev *); |
| int pci_enable_resources(struct pci_dev *, int mask); |
| void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), |
| int (*)(const struct pci_dev *, u8, u8)); |
| struct resource *pci_find_resource(struct pci_dev *dev, struct resource *res); |
| #define HAVE_PCI_REQ_REGIONS 2 |
| int __must_check pci_request_regions(struct pci_dev *, const char *); |
| int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *); |
| void pci_release_regions(struct pci_dev *); |
| int __must_check pci_request_region(struct pci_dev *, int, const char *); |
| int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *); |
| void pci_release_region(struct pci_dev *, int); |
| int pci_request_selected_regions(struct pci_dev *, int, const char *); |
| int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *); |
| void pci_release_selected_regions(struct pci_dev *, int); |
| |
| /* drivers/pci/bus.c */ |
| struct pci_bus *pci_bus_get(struct pci_bus *bus); |
| void pci_bus_put(struct pci_bus *bus); |
| void pci_add_resource(struct list_head *resources, struct resource *res); |
| void pci_add_resource_offset(struct list_head *resources, struct resource *res, |
| resource_size_t offset); |
| void pci_free_resource_list(struct list_head *resources); |
| void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, |
| unsigned int flags); |
| struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n); |
| void pci_bus_remove_resources(struct pci_bus *bus); |
| int devm_request_pci_bus_resources(struct device *dev, |
| struct list_head *resources); |
| |
| #define pci_bus_for_each_resource(bus, res, i) \ |
| for (i = 0; \ |
| (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \ |
| i++) |
| |
| int __must_check pci_bus_alloc_resource(struct pci_bus *bus, |
| struct resource *res, resource_size_t size, |
| resource_size_t align, resource_size_t min, |
| unsigned long type_mask, |
| resource_size_t (*alignf)(void *, |
| const struct resource *, |
| resource_size_t, |
| resource_size_t), |
| void *alignf_data); |
| |
| |
| int pci_register_io_range(phys_addr_t addr, resource_size_t size); |
| unsigned long pci_address_to_pio(phys_addr_t addr); |
| phys_addr_t pci_pio_to_address(unsigned long pio); |
| int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr); |
| void pci_unmap_iospace(struct resource *res); |
| void __iomem *devm_pci_remap_cfgspace(struct device *dev, |
| resource_size_t offset, |
| resource_size_t size); |
| void __iomem *devm_pci_remap_cfg_resource(struct device *dev, |
| struct resource *res); |
| |
| static inline pci_bus_addr_t pci_bus_address(struct pci_dev *pdev, int bar) |
| { |
| struct pci_bus_region region; |
| |
| pcibios_resource_to_bus(pdev->bus, ®ion, &pdev->resource[bar]); |
| return region.start; |
| } |
| |
| /* Proper probing supporting hot-pluggable devices */ |
| int __must_check __pci_register_driver(struct pci_driver *, struct module *, |
| const char *mod_name); |
| |
| /* |
| * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded |
| */ |
| #define pci_register_driver(driver) \ |
| __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) |
| |
| void pci_unregister_driver(struct pci_driver *dev); |
| |
| /** |
| * module_pci_driver() - Helper macro for registering a PCI driver |
| * @__pci_driver: pci_driver struct |
| * |
| * Helper macro for PCI drivers which do not do anything special in module |
| * init/exit. This eliminates a lot of boilerplate. Each module may only |
| * use this macro once, and calling it replaces module_init() and module_exit() |
| */ |
| #define module_pci_driver(__pci_driver) \ |
| module_driver(__pci_driver, pci_register_driver, \ |
| pci_unregister_driver) |
| |
| /** |
| * builtin_pci_driver() - Helper macro for registering a PCI driver |
| * @__pci_driver: pci_driver struct |
| * |
| * Helper macro for PCI drivers which do not do anything special in their |
| * init code. This eliminates a lot of boilerplate. Each driver may only |
| * use this macro once, and calling it replaces device_initcall(...) |
| */ |
| #define builtin_pci_driver(__pci_driver) \ |
| builtin_driver(__pci_driver, pci_register_driver) |
| |
| struct pci_driver *pci_dev_driver(const struct pci_dev *dev); |
| int pci_add_dynid(struct pci_driver *drv, |
| unsigned int vendor, unsigned int device, |
| unsigned int subvendor, unsigned int subdevice, |
| unsigned int class, unsigned int class_mask, |
| unsigned long driver_data); |
| const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, |
| struct pci_dev *dev); |
| int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, |
| int pass); |
| |
| void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), |
| void *userdata); |
| int pci_cfg_space_size(struct pci_dev *dev); |
| unsigned char pci_bus_max_busnr(struct pci_bus *bus); |
| void pci_setup_bridge(struct pci_bus *bus); |
| resource_size_t pcibios_window_alignment(struct pci_bus *bus, |
| unsigned long type); |
| resource_size_t pcibios_iov_resource_alignment(struct pci_dev *dev, int resno); |
| |
| #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0) |
| #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1) |
| |
| int pci_set_vga_state(struct pci_dev *pdev, bool decode, |
| unsigned int command_bits, u32 flags); |
| |
| #define PCI_IRQ_LEGACY (1 << 0) /* allow legacy interrupts */ |
| #define PCI_IRQ_MSI (1 << 1) /* allow MSI interrupts */ |
| #define PCI_IRQ_MSIX (1 << 2) /* allow MSI-X interrupts */ |
| #define PCI_IRQ_AFFINITY (1 << 3) /* auto-assign affinity */ |
| #define PCI_IRQ_ALL_TYPES \ |
| (PCI_IRQ_LEGACY | PCI_IRQ_MSI | PCI_IRQ_MSIX) |
| |
| /* kmem_cache style wrapper around pci_alloc_consistent() */ |
| |
| #include <linux/pci-dma.h> |
| #include <linux/dmapool.h> |
| |
| #define pci_pool dma_pool |
| #define pci_pool_create(name, pdev, size, align, allocation) \ |
| dma_pool_create(name, &pdev->dev, size, align, allocation) |
| #define pci_pool_destroy(pool) dma_pool_destroy(pool) |
| #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) |
| #define pci_pool_zalloc(pool, flags, handle) \ |
| dma_pool_zalloc(pool, flags, handle) |
| #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) |
| |
| struct msix_entry { |
| u32 vector; /* kernel uses to write allocated vector */ |
| u16 entry; /* driver uses to specify entry, OS writes */ |
| }; |
| |
| #ifdef CONFIG_PCI_MSI |
| int pci_msi_vec_count(struct pci_dev *dev); |
| void pci_disable_msi(struct pci_dev *dev); |
| int pci_msix_vec_count(struct pci_dev *dev); |
| void pci_disable_msix(struct pci_dev *dev); |
| void pci_restore_msi_state(struct pci_dev *dev); |
| int pci_msi_enabled(void); |
| int pci_enable_msi(struct pci_dev *dev); |
| int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, |
| int minvec, int maxvec); |
| static inline int pci_enable_msix_exact(struct pci_dev *dev, |
| struct msix_entry *entries, int nvec) |
| { |
| int rc = pci_enable_msix_range(dev, entries, nvec, nvec); |
| if (rc < 0) |
| return rc; |
| return 0; |
| } |
| int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs, |
| unsigned int max_vecs, unsigned int flags, |
| const struct irq_affinity *affd); |
| |
| void pci_free_irq_vectors(struct pci_dev *dev); |
| int pci_irq_vector(struct pci_dev *dev, unsigned int nr); |
| const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, int vec); |
| int pci_irq_get_node(struct pci_dev *pdev, int vec); |
| |
| #else |
| static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; } |
| static inline void pci_disable_msi(struct pci_dev *dev) { } |
| static inline int pci_msix_vec_count(struct pci_dev *dev) { return -ENOSYS; } |
| static inline void pci_disable_msix(struct pci_dev *dev) { } |
| static inline void pci_restore_msi_state(struct pci_dev *dev) { } |
| static inline int pci_msi_enabled(void) { return 0; } |
| static inline int pci_enable_msi(struct pci_dev *dev) |
| { return -ENOSYS; } |
| static inline int pci_enable_msix_range(struct pci_dev *dev, |
| struct msix_entry *entries, int minvec, int maxvec) |
| { return -ENOSYS; } |
| static inline int pci_enable_msix_exact(struct pci_dev *dev, |
| struct msix_entry *entries, int nvec) |
| { return -ENOSYS; } |
| |
| static inline int |
| pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs, |
| unsigned int max_vecs, unsigned int flags, |
| const struct irq_affinity *aff_desc) |
| { |
| if (min_vecs > 1) |
| return -EINVAL; |
| return 1; |
| } |
| |
| static inline void pci_free_irq_vectors(struct pci_dev *dev) |
| { |
| } |
| |
| static inline int pci_irq_vector(struct pci_dev *dev, unsigned int nr) |
| { |
| if (WARN_ON_ONCE(nr > 0)) |
| return -EINVAL; |
| return dev->irq; |
| } |
| static inline const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, |
| int vec) |
| { |
| return cpu_possible_mask; |
| } |
| |
| static inline int pci_irq_get_node(struct pci_dev *pdev, int vec) |
| { |
| return first_online_node; |
| } |
| #endif |
| |
| static inline int |
| pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs, |
| unsigned int max_vecs, unsigned int flags) |
| { |
| return pci_alloc_irq_vectors_affinity(dev, min_vecs, max_vecs, flags, |
| NULL); |
| } |
| |
| #ifdef CONFIG_PCIEPORTBUS |
| extern bool pcie_ports_disabled; |
| extern bool pcie_ports_auto; |
| #else |
| #define pcie_ports_disabled true |
| #define pcie_ports_auto false |
| #endif |
| |
| #ifdef CONFIG_PCIEASPM |
| bool pcie_aspm_support_enabled(void); |
| #else |
| static inline bool pcie_aspm_support_enabled(void) { return false; } |
| #endif |
| |
| #ifdef CONFIG_PCIEAER |
| void pci_no_aer(void); |
| bool pci_aer_available(void); |
| int pci_aer_init(struct pci_dev *dev); |
| #else |
| static inline void pci_no_aer(void) { } |
| static inline bool pci_aer_available(void) { return false; } |
| static inline int pci_aer_init(struct pci_dev *d) { return -ENODEV; } |
| #endif |
| |
| #ifdef CONFIG_PCIE_ECRC |
| void pcie_set_ecrc_checking(struct pci_dev *dev); |
| void pcie_ecrc_get_policy(char *str); |
| #else |
| static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { } |
| static inline void pcie_ecrc_get_policy(char *str) { } |
| #endif |
| |
| #ifdef CONFIG_HT_IRQ |
| /* The functions a driver should call */ |
| int ht_create_irq(struct pci_dev *dev, int idx); |
| void ht_destroy_irq(unsigned int irq); |
| #endif /* CONFIG_HT_IRQ */ |
| |
| #ifdef CONFIG_PCI_ATS |
| /* Address Translation Service */ |
| void pci_ats_init(struct pci_dev *dev); |
| int pci_enable_ats(struct pci_dev *dev, int ps); |
| void pci_disable_ats(struct pci_dev *dev); |
| int pci_ats_queue_depth(struct pci_dev *dev); |
| #else |
| static inline void pci_ats_init(struct pci_dev *d) { } |
| static inline int pci_enable_ats(struct pci_dev *d, int ps) { return -ENODEV; } |
| static inline void pci_disable_ats(struct pci_dev *d) { } |
| static inline int pci_ats_queue_depth(struct pci_dev *d) { return -ENODEV; } |
| #endif |
| |
| #ifdef CONFIG_PCIE_PTM |
| int pci_enable_ptm(struct pci_dev *dev, u8 *granularity); |
| #else |
| static inline int pci_enable_ptm(struct pci_dev *dev, u8 *granularity) |
| { return -EINVAL; } |
| #endif |
| |
| void pci_cfg_access_lock(struct pci_dev *dev); |
| bool pci_cfg_access_trylock(struct pci_dev *dev); |
| void pci_cfg_access_unlock(struct pci_dev *dev); |
| |
| /* |
| * PCI domain support. Sometimes called PCI segment (eg by ACPI), |
| * a PCI domain is defined to be a set of PCI buses which share |
| * configuration space. |
| */ |
| #ifdef CONFIG_PCI_DOMAINS |
| extern int pci_domains_supported; |
| int pci_get_new_domain_nr(void); |
| #else |
| enum { pci_domains_supported = 0 }; |
| static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
| static inline int pci_proc_domain(struct pci_bus *bus) { return 0; } |
| static inline int pci_get_new_domain_nr(void) { return -ENOSYS; } |
| #endif /* CONFIG_PCI_DOMAINS */ |
| |
| /* |
| * Generic implementation for PCI domain support. If your |
| * architecture does not need custom management of PCI |
| * domains then this implementation will be used |
| */ |
| #ifdef CONFIG_PCI_DOMAINS_GENERIC |
| static inline int pci_domain_nr(struct pci_bus *bus) |
| { |
| return bus->domain_nr; |
| } |
| #ifdef CONFIG_ACPI |
| int acpi_pci_bus_find_domain_nr(struct pci_bus *bus); |
| #else |
| static inline int acpi_pci_bus_find_domain_nr(struct pci_bus *bus) |
| { return 0; } |
| #endif |
| int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent); |
| #endif |
| |
| /* some architectures require additional setup to direct VGA traffic */ |
| typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode, |
| unsigned int command_bits, u32 flags); |
| void pci_register_set_vga_state(arch_set_vga_state_t func); |
| |
| static inline int |
| pci_request_io_regions(struct pci_dev *pdev, const char *name) |
| { |
| return pci_request_selected_regions(pdev, |
| pci_select_bars(pdev, IORESOURCE_IO), name); |
| } |
| |
| static inline void |
| pci_release_io_regions(struct pci_dev *pdev) |
| { |
| return pci_release_selected_regions(pdev, |
| pci_select_bars(pdev, IORESOURCE_IO)); |
| } |
| |
| static inline int |
| pci_request_mem_regions(struct pci_dev *pdev, const char *name) |
| { |
| return pci_request_selected_regions(pdev, |
| pci_select_bars(pdev, IORESOURCE_MEM), name); |
| } |
| |
| static inline void |
| pci_release_mem_regions(struct pci_dev *pdev) |
| { |
| return pci_release_selected_regions(pdev, |
| pci_select_bars(pdev, IORESOURCE_MEM)); |
| } |
| |
| #else /* CONFIG_PCI is not enabled */ |
| |
| static inline void pci_set_flags(int flags) { } |
| static inline void pci_add_flags(int flags) { } |
| static inline void pci_clear_flags(int flags) { } |
| static inline int pci_has_flag(int flag) { return 0; } |
| |
| /* |
| * If the system does not have PCI, clearly these return errors. Define |
| * these as simple inline functions to avoid hair in drivers. |
| */ |
| |
| #define _PCI_NOP(o, s, t) \ |
| static inline int pci_##o##_config_##s(struct pci_dev *dev, \ |
| int where, t val) \ |
| { return PCIBIOS_FUNC_NOT_SUPPORTED; } |
| |
| #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ |
| _PCI_NOP(o, word, u16 x) \ |
| _PCI_NOP(o, dword, u32 x) |
| _PCI_NOP_ALL(read, *) |
| _PCI_NOP_ALL(write,) |
| |
| static inline struct pci_dev *pci_get_device(unsigned int vendor, |
| unsigned int device, |
| struct pci_dev *from) |
| { return NULL; } |
| |
| static inline struct pci_dev *pci_get_subsys(unsigned int vendor, |
| unsigned int device, |
| unsigned int ss_vendor, |
| unsigned int ss_device, |
| struct pci_dev *from) |
| { return NULL; } |
| |
| static inline struct pci_dev *pci_get_class(unsigned int class, |
| struct pci_dev *from) |
| { return NULL; } |
| |
| #define pci_dev_present(ids) (0) |
| #define no_pci_devices() (1) |
| #define pci_dev_put(dev) do { } while (0) |
| |
| static inline void pci_set_master(struct pci_dev *dev) { } |
| static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; } |
| static inline void pci_disable_device(struct pci_dev *dev) { } |
| static inline int pci_assign_resource(struct pci_dev *dev, int i) |
| { return -EBUSY; } |
| static inline int __pci_register_driver(struct pci_driver *drv, |
| struct module *owner) |
| { return 0; } |
| static inline int pci_register_driver(struct pci_driver *drv) |
| { return 0; } |
| static inline void pci_unregister_driver(struct pci_driver *drv) { } |
| static inline int pci_find_capability(struct pci_dev *dev, int cap) |
| { return 0; } |
| static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, |
| int cap) |
| { return 0; } |
| static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) |
| { return 0; } |
| |
| /* Power management related routines */ |
| static inline int pci_save_state(struct pci_dev *dev) { return 0; } |
| static inline void pci_restore_state(struct pci_dev *dev) { } |
| static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) |
| { return 0; } |
| static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable) |
| { return 0; } |
| static inline pci_power_t pci_choose_state(struct pci_dev *dev, |
| pm_message_t state) |
| { return PCI_D0; } |
| static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
| int enable) |
| { return 0; } |
| |
| static inline struct resource *pci_find_resource(struct pci_dev *dev, |
| struct resource *res) |
| { return NULL; } |
| static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) |
| { return -EIO; } |
| static inline void pci_release_regions(struct pci_dev *dev) { } |
| |
| static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; } |
| |
| static inline void pci_block_cfg_access(struct pci_dev *dev) { } |
| static inline int pci_block_cfg_access_in_atomic(struct pci_dev *dev) |
| { return 0; } |
| static inline void pci_unblock_cfg_access(struct pci_dev *dev) { } |
| |
| static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) |
| { return NULL; } |
| static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, |
| unsigned int devfn) |
| { return NULL; } |
| static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, |
| unsigned int devfn) |
| { return NULL; } |
| |
| static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
| static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; } |
| static inline int pci_get_new_domain_nr(void) { return -ENOSYS; } |
| |
| #define dev_is_pci(d) (false) |
| #define dev_is_pf(d) (false) |
| #endif /* CONFIG_PCI */ |
| |
| /* Include architecture-dependent settings and functions */ |
| |
| #include <asm/pci.h> |
| |
| /* These two functions provide almost identical functionality. Depennding |
| * on the architecture, one will be implemented as a wrapper around the |
| * other (in drivers/pci/mmap.c). |
| * |
| * pci_mmap_resource_range() maps a specific BAR, and vm->vm_pgoff |
| * is expected to be an offset within that region. |
| * |
| * pci_mmap_page_range() is the legacy architecture-specific interface, |
| * which accepts a "user visible" resource address converted by |
| * pci_resource_to_user(), as used in the legacy mmap() interface in |
| * /proc/bus/pci/. |
| */ |
| int pci_mmap_resource_range(struct pci_dev *dev, int bar, |
| struct vm_area_struct *vma, |
| enum pci_mmap_state mmap_state, int write_combine); |
| int pci_mmap_page_range(struct pci_dev *pdev, int bar, |
| struct vm_area_struct *vma, |
| enum pci_mmap_state mmap_state, int write_combine); |
| |
| #ifndef arch_can_pci_mmap_wc |
| #define arch_can_pci_mmap_wc() 0 |
| #endif |
| |
| #ifndef arch_can_pci_mmap_io |
| #define arch_can_pci_mmap_io() 0 |
| #define pci_iobar_pfn(pdev, bar, vma) (-EINVAL) |
| #else |
| int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma); |
| #endif |
| |
| #ifndef pci_root_bus_fwnode |
| #define pci_root_bus_fwnode(bus) NULL |
| #endif |
| |
| /* these helpers provide future and backwards compatibility |
| * for accessing popular PCI BAR info */ |
| #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) |
| #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) |
| #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) |
| #define pci_resource_len(dev,bar) \ |
| ((pci_resource_start((dev), (bar)) == 0 && \ |
| pci_resource_end((dev), (bar)) == \ |
| pci_resource_start((dev), (bar))) ? 0 : \ |
| \ |
| (pci_resource_end((dev), (bar)) - \ |
| pci_resource_start((dev), (bar)) + 1)) |
| |
| /* Similar to the helpers above, these manipulate per-pci_dev |
| * driver-specific data. They are really just a wrapper around |
| * the generic device structure functions of these calls. |
| */ |
| static inline void *pci_get_drvdata(struct pci_dev *pdev) |
| { |
| return dev_get_drvdata(&pdev->dev); |
| } |
| |
| static inline void pci_set_drvdata(struct pci_dev *pdev, void *data) |
| { |
| dev_set_drvdata(&pdev->dev, data); |
| } |
| |
| /* If you want to know what to call your pci_dev, ask this function. |
| * Again, it's a wrapper around the generic device. |
| */ |
| static inline const char *pci_name(const struct pci_dev *pdev) |
| { |
| return dev_name(&pdev->dev); |
| } |
| |
| |
| /* Some archs don't want to expose struct resource to userland as-is |
| * in sysfs and /proc |
| */ |
| #ifdef HAVE_ARCH_PCI_RESOURCE_TO_USER |
| void pci_resource_to_user(const struct pci_dev *dev, int bar, |
| const struct resource *rsrc, |
| resource_size_t *start, resource_size_t *end); |
| #else |
| static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, |
| const struct resource *rsrc, resource_size_t *start, |
| resource_size_t *end) |
| { |
| *start = rsrc->start; |
| *end = rsrc->end; |
| } |
| #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ |
| |
| |
| /* |
| * The world is not perfect and supplies us with broken PCI devices. |
| * For at least a part of these bugs we need a work-around, so both |
| * generic (drivers/pci/quirks.c) and per-architecture code can define |
| * fixup hooks to be called for particular buggy devices. |
| */ |
| |
| struct pci_fixup { |
| u16 vendor; /* You can use PCI_ANY_ID here of course */ |
| u16 device; /* You can use PCI_ANY_ID here of course */ |
| u32 class; /* You can use PCI_ANY_ID here too */ |
| unsigned int class_shift; /* should be 0, 8, 16 */ |
| void (*hook)(struct pci_dev *dev); |
| }; |
| |
| enum pci_fixup_pass { |
| pci_fixup_early, /* Before probing BARs */ |
| pci_fixup_header, /* After reading configuration header */ |
| pci_fixup_final, /* Final phase of device fixups */ |
| pci_fixup_enable, /* pci_enable_device() time */ |
| pci_fixup_resume, /* pci_device_resume() */ |
| pci_fixup_suspend, /* pci_device_suspend() */ |
| pci_fixup_resume_early, /* pci_device_resume_early() */ |
| pci_fixup_suspend_late, /* pci_device_suspend_late() */ |
| }; |
| |
| /* Anonymous variables would be nice... */ |
| #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, class, \ |
| class_shift, hook) \ |
| static const struct pci_fixup __PASTE(__pci_fixup_##name,__LINE__) __used \ |
| __attribute__((__section__(#section), aligned((sizeof(void *))))) \ |
| = { vendor, device, class, class_shift, hook }; |
| |
| #define DECLARE_PCI_FIXUP_CLASS_EARLY(vendor, device, class, \ |
| class_shift, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ |
| hook, vendor, device, class, class_shift, hook) |
| #define DECLARE_PCI_FIXUP_CLASS_HEADER(vendor, device, class, \ |
| class_shift, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ |
| hook, vendor, device, class, class_shift, hook) |
| #define DECLARE_PCI_FIXUP_CLASS_FINAL(vendor, device, class, \ |
| class_shift, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ |
| hook, vendor, device, class, class_shift, hook) |
| #define DECLARE_PCI_FIXUP_CLASS_ENABLE(vendor, device, class, \ |
| class_shift, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ |
| hook, vendor, device, class, class_shift, hook) |
| #define DECLARE_PCI_FIXUP_CLASS_RESUME(vendor, device, class, \ |
| class_shift, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ |
| resume##hook, vendor, device, class, \ |
| class_shift, hook) |
| #define DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(vendor, device, class, \ |
| class_shift, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ |
| resume_early##hook, vendor, device, \ |
| class, class_shift, hook) |
| #define DECLARE_PCI_FIXUP_CLASS_SUSPEND(vendor, device, class, \ |
| class_shift, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ |
| suspend##hook, vendor, device, class, \ |
| class_shift, hook) |
| #define DECLARE_PCI_FIXUP_CLASS_SUSPEND_LATE(vendor, device, class, \ |
| class_shift, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend_late, \ |
| suspend_late##hook, vendor, device, \ |
| class, class_shift, hook) |
| |
| #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ |
| hook, vendor, device, PCI_ANY_ID, 0, hook) |
| #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ |
| hook, vendor, device, PCI_ANY_ID, 0, hook) |
| #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ |
| hook, vendor, device, PCI_ANY_ID, 0, hook) |
| #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ |
| hook, vendor, device, PCI_ANY_ID, 0, hook) |
| #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ |
| resume##hook, vendor, device, \ |
| PCI_ANY_ID, 0, hook) |
| #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ |
| resume_early##hook, vendor, device, \ |
| PCI_ANY_ID, 0, hook) |
| #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ |
| suspend##hook, vendor, device, \ |
| PCI_ANY_ID, 0, hook) |
| #define DECLARE_PCI_FIXUP_SUSPEND_LATE(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend_late, \ |
| suspend_late##hook, vendor, device, \ |
| PCI_ANY_ID, 0, hook) |
| |
| #ifdef CONFIG_PCI_QUIRKS |
| void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); |
| int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags); |
| int pci_dev_specific_enable_acs(struct pci_dev *dev); |
| #else |
| static inline void pci_fixup_device(enum pci_fixup_pass pass, |
| struct pci_dev *dev) { } |
| static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev, |
| u16 acs_flags) |
| { |
| return -ENOTTY; |
| } |
| static inline int pci_dev_specific_enable_acs(struct pci_dev *dev) |
| { |
| return -ENOTTY; |
| } |
| #endif |
| |
| void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); |
| void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); |
| void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); |
| int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name); |
| int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask, |
| const char *name); |
| void pcim_iounmap_regions(struct pci_dev *pdev, int mask); |
| |
| extern int pci_pci_problems; |
| #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ |
| #define PCIPCI_TRITON 2 |
| #define PCIPCI_NATOMA 4 |
| #define PCIPCI_VIAETBF 8 |
| #define PCIPCI_VSFX 16 |
| #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ |
| #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ |
| |
| extern unsigned long pci_cardbus_io_size; |
| extern unsigned long pci_cardbus_mem_size; |
| extern u8 pci_dfl_cache_line_size; |
| extern u8 pci_cache_line_size; |
| |
| extern unsigned long pci_hotplug_io_size; |
| extern unsigned long pci_hotplug_mem_size; |
| extern unsigned long pci_hotplug_bus_size; |
| |
| /* Architecture-specific versions may override these (weak) */ |
| void pcibios_disable_device(struct pci_dev *dev); |
| void pcibios_set_master(struct pci_dev *dev); |
| int pcibios_set_pcie_reset_state(struct pci_dev *dev, |
| enum pcie_reset_state state); |
| int pcibios_add_device(struct pci_dev *dev); |
| void pcibios_release_device(struct pci_dev *dev); |
| void pcibios_penalize_isa_irq(int irq, int active); |
| int pcibios_alloc_irq(struct pci_dev *dev); |
| void pcibios_free_irq(struct pci_dev *dev); |
| |
| #ifdef CONFIG_HIBERNATE_CALLBACKS |
| extern struct dev_pm_ops pcibios_pm_ops; |
| #endif |
| |
| #if defined(CONFIG_PCI_MMCONFIG) || defined(CONFIG_ACPI_MCFG) |
| void __init pci_mmcfg_early_init(void); |
| void __init pci_mmcfg_late_init(void); |
| #else |
| static inline void pci_mmcfg_early_init(void) { } |
| static inline void pci_mmcfg_late_init(void) { } |
| #endif |
| |
| int pci_ext_cfg_avail(void); |
| |
| void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar); |
| void __iomem *pci_ioremap_wc_bar(struct pci_dev *pdev, int bar); |
| |
| #ifdef CONFIG_PCI_IOV |
| int pci_iov_virtfn_bus(struct pci_dev *dev, int id); |
| int pci_iov_virtfn_devfn(struct pci_dev *dev, int id); |
| |
| int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); |
| void pci_disable_sriov(struct pci_dev *dev); |
| int pci_iov_add_virtfn(struct pci_dev *dev, int id, int reset); |
| void pci_iov_remove_virtfn(struct pci_dev *dev, int id, int reset); |
| int pci_num_vf(struct pci_dev *dev); |
| int pci_vfs_assigned(struct pci_dev *dev); |
| int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); |
| int pci_sriov_get_totalvfs(struct pci_dev *dev); |
| resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno); |
| #else |
| static inline int pci_iov_virtfn_bus(struct pci_dev *dev, int id) |
| { |
| return -ENOSYS; |
| } |
| static inline int pci_iov_virtfn_devfn(struct pci_dev *dev, int id) |
| { |
| return -ENOSYS; |
| } |
| static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) |
| { return -ENODEV; } |
| static inline int pci_iov_add_virtfn(struct pci_dev *dev, int id, int reset) |
| { |
| return -ENOSYS; |
| } |
| static inline void pci_iov_remove_virtfn(struct pci_dev *dev, |
| int id, int reset) { } |
| static inline void pci_disable_sriov(struct pci_dev *dev) { } |
| static inline int pci_num_vf(struct pci_dev *dev) { return 0; } |
| static inline int pci_vfs_assigned(struct pci_dev *dev) |
| { return 0; } |
| static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) |
| { return 0; } |
| static inline int pci_sriov_get_totalvfs(struct pci_dev *dev) |
| { return 0; } |
| static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno) |
| { return 0; } |
| #endif |
| |
| #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE) |
| void pci_hp_create_module_link(struct pci_slot *pci_slot); |
| void pci_hp_remove_module_link(struct pci_slot *pci_slot); |
| #endif |
| |
| /** |
| * pci_pcie_cap - get the saved PCIe capability offset |
| * @dev: PCI device |
| * |
| * PCIe capability offset is calculated at PCI device initialization |
| * time and saved in the data structure. This function returns saved |
| * PCIe capability offset. Using this instead of pci_find_capability() |
| * reduces unnecessary search in the PCI configuration space. If you |
| * need to calculate PCIe capability offset from raw device for some |
| * reasons, please use pci_find_capability() instead. |
| */ |
| static inline int pci_pcie_cap(struct pci_dev *dev) |
| { |
| return dev->pcie_cap; |
| } |
| |
| /** |
| * pci_is_pcie - check if the PCI device is PCI Express capable |
| * @dev: PCI device |
| * |
| * Returns: true if the PCI device is PCI Express capable, false otherwise. |
| */ |
| static inline bool pci_is_pcie(struct pci_dev *dev) |
| { |
| return pci_pcie_cap(dev); |
| } |
| |
| /** |
| * pcie_caps_reg - get the PCIe Capabilities Register |
| * @dev: PCI device |
| */ |
| static inline u16 pcie_caps_reg(const struct pci_dev *dev) |
| { |
| return dev->pcie_flags_reg; |
| } |
| |
| /** |
| * pci_pcie_type - get the PCIe device/port type |
| * @dev: PCI device |
| */ |
| static inline int pci_pcie_type(const struct pci_dev *dev) |
| { |
| return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4; |
| } |
| |
| static inline struct pci_dev *pcie_find_root_port(struct pci_dev *dev) |
| { |
| while (1) { |
| if (!pci_is_pcie(dev)) |
| break; |
| if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) |
| return dev; |
| if (!dev->bus->self) |
| break; |
| dev = dev->bus->self; |
| } |
| return NULL; |
| } |
| |
| void pci_request_acs(void); |
| bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags); |
| bool pci_acs_path_enabled(struct pci_dev *start, |
| struct pci_dev *end, u16 acs_flags); |
| |
| #define PCI_VPD_LRDT 0x80 /* Large Resource Data Type */ |
| #define PCI_VPD_LRDT_ID(x) ((x) | PCI_VPD_LRDT) |
| |
| /* Large Resource Data Type Tag Item Names */ |
| #define PCI_VPD_LTIN_ID_STRING 0x02 /* Identifier String */ |
| #define PCI_VPD_LTIN_RO_DATA 0x10 /* Read-Only Data */ |
| #define PCI_VPD_LTIN_RW_DATA 0x11 /* Read-Write Data */ |
| |
| #define PCI_VPD_LRDT_ID_STRING PCI_VPD_LRDT_ID(PCI_VPD_LTIN_ID_STRING) |
| #define PCI_VPD_LRDT_RO_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA) |
| #define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA) |
| |
| /* Small Resource Data Type Tag Item Names */ |
| #define PCI_VPD_STIN_END 0x0f /* End */ |
| |
| #define PCI_VPD_SRDT_END (PCI_VPD_STIN_END << 3) |
| |
| #define PCI_VPD_SRDT_TIN_MASK 0x78 |
| #define PCI_VPD_SRDT_LEN_MASK 0x07 |
| #define PCI_VPD_LRDT_TIN_MASK 0x7f |
| |
| #define PCI_VPD_LRDT_TAG_SIZE 3 |
| #define PCI_VPD_SRDT_TAG_SIZE 1 |
| |
| #define PCI_VPD_INFO_FLD_HDR_SIZE 3 |
| |
| #define PCI_VPD_RO_KEYWORD_PARTNO "PN" |
| #define PCI_VPD_RO_KEYWORD_MFR_ID "MN" |
| #define PCI_VPD_RO_KEYWORD_VENDOR0 "V0" |
| #define PCI_VPD_RO_KEYWORD_CHKSUM "RV" |
| |
| /** |
| * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length |
| * @lrdt: Pointer to the beginning of the Large Resource Data Type tag |
| * |
| * Returns the extracted Large Resource Data Type length. |
| */ |
| static inline u16 pci_vpd_lrdt_size(const u8 *lrdt) |
| { |
| return (u16)lrdt[1] + ((u16)lrdt[2] << 8); |
| } |
| |
| /** |
| * pci_vpd_lrdt_tag - Extracts the Large Resource Data Type Tag Item |
| * @lrdt: Pointer to the beginning of the Large Resource Data Type tag |
| * |
| * Returns the extracted Large Resource Data Type Tag item. |
| */ |
| static inline u16 pci_vpd_lrdt_tag(const u8 *lrdt) |
| { |
| return (u16)(lrdt[0] & PCI_VPD_LRDT_TIN_MASK); |
| } |
| |
| /** |
| * pci_vpd_srdt_size - Extracts the Small Resource Data Type length |
| * @lrdt: Pointer to the beginning of the Small Resource Data Type tag |
| * |
| * Returns the extracted Small Resource Data Type length. |
| */ |
| static inline u8 pci_vpd_srdt_size(const u8 *srdt) |
| { |
| return (*srdt) & PCI_VPD_SRDT_LEN_MASK; |
| } |
| |
| /** |
| * pci_vpd_srdt_tag - Extracts the Small Resource Data Type Tag Item |
| * @lrdt: Pointer to the beginning of the Small Resource Data Type tag |
| * |
| * Returns the extracted Small Resource Data Type Tag Item. |
| */ |
| static inline u8 pci_vpd_srdt_tag(const u8 *srdt) |
| { |
| return ((*srdt) & PCI_VPD_SRDT_TIN_MASK) >> 3; |
| } |
| |
| /** |
| * pci_vpd_info_field_size - Extracts the information field length |
| * @lrdt: Pointer to the beginning of an information field header |
| * |
| * Returns the extracted information field length. |
| */ |
| static inline u8 pci_vpd_info_field_size(const u8 *info_field) |
| { |
| return info_field[2]; |
| } |
| |
| /** |
| * pci_vpd_find_tag - Locates the Resource Data Type tag provided |
| * @buf: Pointer to buffered vpd data |
| * @off: The offset into the buffer at which to begin the search |
| * @len: The length of the vpd buffer |
| * @rdt: The Resource Data Type to search for |
| * |
| * Returns the index where the Resource Data Type was found or |
| * -ENOENT otherwise. |
| */ |
| int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); |
| |
| /** |
| * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD |
| * @buf: Pointer to buffered vpd data |
| * @off: The offset into the buffer at which to begin the search |
| * @len: The length of the buffer area, relative to off, in which to search |
| * @kw: The keyword to search for |
| * |
| * Returns the index where the information field keyword was found or |
| * -ENOENT otherwise. |
| */ |
| int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, |
| unsigned int len, const char *kw); |
| |
| /* PCI <-> OF binding helpers */ |
| #ifdef CONFIG_OF |
| struct device_node; |
| struct irq_domain; |
| void pci_set_of_node(struct pci_dev *dev); |
| void pci_release_of_node(struct pci_dev *dev); |
| void pci_set_bus_of_node(struct pci_bus *bus); |
| void pci_release_bus_of_node(struct pci_bus *bus); |
| struct irq_domain *pci_host_bridge_of_msi_domain(struct pci_bus *bus); |
| |
| /* Arch may override this (weak) */ |
| struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus); |
| |
| static inline struct device_node * |
| pci_device_to_OF_node(const struct pci_dev *pdev) |
| { |
| return pdev ? pdev->dev.of_node : NULL; |
| } |
| |
| static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus) |
| { |
| return bus ? bus->dev.of_node : NULL; |
| } |
| |
| #else /* CONFIG_OF */ |
| static inline void pci_set_of_node(struct pci_dev *dev) { } |
| static inline void pci_release_of_node(struct pci_dev *dev) { } |
| static inline void pci_set_bus_of_node(struct pci_bus *bus) { } |
| static inline void pci_release_bus_of_node(struct pci_bus *bus) { } |
| static inline struct device_node * |
| pci_device_to_OF_node(const struct pci_dev *pdev) { return NULL; } |
| static inline struct irq_domain * |
| pci_host_bridge_of_msi_domain(struct pci_bus *bus) { return NULL; } |
| #endif /* CONFIG_OF */ |
| |
| #ifdef CONFIG_ACPI |
| struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus); |
| |
| void |
| pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *)); |
| #else |
| static inline struct irq_domain * |
| pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) { return NULL; } |
| #endif |
| |
| #ifdef CONFIG_EEH |
| static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev) |
| { |
| return pdev->dev.archdata.edev; |
| } |
| #endif |
| |
| void pci_add_dma_alias(struct pci_dev *dev, u8 devfn); |
| bool pci_devs_are_dma_aliases(struct pci_dev *dev1, struct pci_dev *dev2); |
| int pci_for_each_dma_alias(struct pci_dev *pdev, |
| int (*fn)(struct pci_dev *pdev, |
| u16 alias, void *data), void *data); |
| |
| /* helper functions for operation of device flag */ |
| static inline void pci_set_dev_assigned(struct pci_dev *pdev) |
| { |
| pdev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED; |
| } |
| static inline void pci_clear_dev_assigned(struct pci_dev *pdev) |
| { |
| pdev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED; |
| } |
| static inline bool pci_is_dev_assigned(struct pci_dev *pdev) |
| { |
| return (pdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) == PCI_DEV_FLAGS_ASSIGNED; |
| } |
| |
| /** |
| * pci_ari_enabled - query ARI forwarding status |
| * @bus: the PCI bus |
| * |
| * Returns true if ARI forwarding is enabled. |
| */ |
| static inline bool pci_ari_enabled(struct pci_bus *bus) |
| { |
| return bus->self && bus->self->ari_enabled; |
| } |
| |
| /** |
| * pci_is_thunderbolt_attached - whether device is on a Thunderbolt daisy chain |
| * @pdev: PCI device to check |
| * |
| * Walk upwards from @pdev and check for each encountered bridge if it's part |
| * of a Thunderbolt controller. Reaching the host bridge means @pdev is not |
| * Thunderbolt-attached. (But rather soldered to the mainboard usually.) |
| */ |
| static inline bool pci_is_thunderbolt_attached(struct pci_dev *pdev) |
| { |
| struct pci_dev *parent = pdev; |
| |
| if (pdev->is_thunderbolt) |
| return true; |
| |
| while ((parent = pci_upstream_bridge(parent))) |
| if (parent->is_thunderbolt) |
| return true; |
| |
| return false; |
| } |
| |
| /* provide the legacy pci_dma_* API */ |
| #include <linux/pci-dma-compat.h> |
| |
| #endif /* LINUX_PCI_H */ |