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/* * $Id: pci.h,v 1.1.1.1 2004-04-15 02:35:27 phoenix Exp $ * * 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 /* * Under PCI, each device has 256 bytes of configuration address space, * of which the first 64 bytes are standardized as follows: */ #define PCI_VENDOR_ID 0x00 /* 16 bits */ #define PCI_DEVICE_ID 0x02 /* 16 bits */ #define PCI_COMMAND 0x04 /* 16 bits */ #define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */ #define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */ #define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */ #define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */ #define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */ #define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */ #define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */ #define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */ #define PCI_COMMAND_SERR 0x100 /* Enable SERR */ #define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */ #define PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */ #define PCI_STATUS 0x06 /* 16 bits */ #define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */ #define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */ #define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */ #define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */ #define PCI_STATUS_PARITY 0x100 /* Detected parity error */ #define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */ #define PCI_STATUS_DEVSEL_FAST 0x000 #define PCI_STATUS_DEVSEL_MEDIUM 0x200 #define PCI_STATUS_DEVSEL_SLOW 0x400 #define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */ #define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */ #define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */ #define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */ #define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */ #define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8 revision */ #define PCI_REVISION_ID 0x08 /* Revision ID */ #define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */ #define PCI_CLASS_DEVICE 0x0a /* Device class */ #define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */ #define PCI_LATENCY_TIMER 0x0d /* 8 bits */ #define PCI_HEADER_TYPE 0x0e /* 8 bits */ #define PCI_HEADER_TYPE_NORMAL 0 #define PCI_HEADER_TYPE_BRIDGE 1 #define PCI_HEADER_TYPE_CARDBUS 2 #define PCI_BIST 0x0f /* 8 bits */ #define PCI_BIST_CODE_MASK 0x0f /* Return result */ #define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */ #define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */ /* * Base addresses specify locations in memory or I/O space. * Decoded size can be determined by writing a value of * 0xffffffff to the register, and reading it back. Only * 1 bits are decoded. */ #define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */ #define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */ #define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */ #define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */ #define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */ #define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */ #define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */ #define PCI_BASE_ADDRESS_SPACE_IO 0x01 #define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00 #define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06 #define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */ #define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */ #define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */ #define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */ #define PCI_BASE_ADDRESS_MEM_MASK (~0x0fUL) #define PCI_BASE_ADDRESS_IO_MASK (~0x03UL) /* bit 1 is reserved if address_space = 1 */ /* Header type 0 (normal devices) */ #define PCI_CARDBUS_CIS 0x28 #define PCI_SUBSYSTEM_VENDOR_ID 0x2c #define PCI_SUBSYSTEM_ID 0x2e #define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */ #define PCI_ROM_ADDRESS_ENABLE 0x01 #define PCI_ROM_ADDRESS_MASK (~0x7ffUL) #define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */ /* 0x35-0x3b are reserved */ #define PCI_INTERRUPT_LINE 0x3c /* 8 bits */ #define PCI_INTERRUPT_PIN 0x3d /* 8 bits */ #define PCI_MIN_GNT 0x3e /* 8 bits */ #define PCI_MAX_LAT 0x3f /* 8 bits */ /* Header type 1 (PCI-to-PCI bridges) */ #define PCI_PRIMARY_BUS 0x18 /* Primary bus number */ #define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */ #define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */ #define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */ #define PCI_IO_BASE 0x1c /* I/O range behind the bridge */ #define PCI_IO_LIMIT 0x1d #define PCI_IO_RANGE_TYPE_MASK 0x0fUL /* I/O bridging type */ #define PCI_IO_RANGE_TYPE_16 0x00 #define PCI_IO_RANGE_TYPE_32 0x01 #define PCI_IO_RANGE_MASK (~0x0fUL) #define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */ #define PCI_MEMORY_BASE 0x20 /* Memory range behind */ #define PCI_MEMORY_LIMIT 0x22 #define PCI_MEMORY_RANGE_TYPE_MASK 0x0fUL #define PCI_MEMORY_RANGE_MASK (~0x0fUL) #define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */ #define PCI_PREF_MEMORY_LIMIT 0x26 #define PCI_PREF_RANGE_TYPE_MASK 0x0fUL #define PCI_PREF_RANGE_TYPE_32 0x00 #define PCI_PREF_RANGE_TYPE_64 0x01 #define PCI_PREF_RANGE_MASK (~0x0fUL) #define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */ #define PCI_PREF_LIMIT_UPPER32 0x2c #define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */ #define PCI_IO_LIMIT_UPPER16 0x32 /* 0x34 same as for htype 0 */ /* 0x35-0x3b is reserved */ #define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */ /* 0x3c-0x3d are same as for htype 0 */ #define PCI_BRIDGE_CONTROL 0x3e #define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */ #define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */ #define PCI_BRIDGE_CTL_NO_ISA 0x04 /* Disable bridging of ISA ports */ #define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */ #define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */ #define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */ #define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */ /* Header type 2 (CardBus bridges) */ #define PCI_CB_CAPABILITY_LIST 0x14 /* 0x15 reserved */ #define PCI_CB_SEC_STATUS 0x16 /* Secondary status */ #define PCI_CB_PRIMARY_BUS 0x18 /* PCI bus number */ #define PCI_CB_CARD_BUS 0x19 /* CardBus bus number */ #define PCI_CB_SUBORDINATE_BUS 0x1a /* Subordinate bus number */ #define PCI_CB_LATENCY_TIMER 0x1b /* CardBus latency timer */ #define PCI_CB_MEMORY_BASE_0 0x1c #define PCI_CB_MEMORY_LIMIT_0 0x20 #define PCI_CB_MEMORY_BASE_1 0x24 #define PCI_CB_MEMORY_LIMIT_1 0x28 #define PCI_CB_IO_BASE_0 0x2c #define PCI_CB_IO_BASE_0_HI 0x2e #define PCI_CB_IO_LIMIT_0 0x30 #define PCI_CB_IO_LIMIT_0_HI 0x32 #define PCI_CB_IO_BASE_1 0x34 #define PCI_CB_IO_BASE_1_HI 0x36 #define PCI_CB_IO_LIMIT_1 0x38 #define PCI_CB_IO_LIMIT_1_HI 0x3a #define PCI_CB_IO_RANGE_MASK (~0x03UL) /* 0x3c-0x3d are same as for htype 0 */ #define PCI_CB_BRIDGE_CONTROL 0x3e #define PCI_CB_BRIDGE_CTL_PARITY 0x01 /* Similar to standard bridge control register */ #define PCI_CB_BRIDGE_CTL_SERR 0x02 #define PCI_CB_BRIDGE_CTL_ISA 0x04 #define PCI_CB_BRIDGE_CTL_VGA 0x08 #define PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20 #define PCI_CB_BRIDGE_CTL_CB_RESET 0x40 /* CardBus reset */ #define PCI_CB_BRIDGE_CTL_16BIT_INT 0x80 /* Enable interrupt for 16-bit cards */ #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100 /* Prefetch enable for both memory regions */ #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200 #define PCI_CB_BRIDGE_CTL_POST_WRITES 0x400 #define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40 #define PCI_CB_SUBSYSTEM_ID 0x42 #define PCI_CB_LEGACY_MODE_BASE 0x44 /* 16-bit PC Card legacy mode base address (ExCa) */ /* 0x48-0x7f reserved */ /* Capability lists */ #define PCI_CAP_LIST_ID 0 /* Capability ID */ #define PCI_CAP_ID_PM 0x01 /* Power Management */ #define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */ #define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */ #define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */ #define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */ #define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */ #define PCI_CAP_ID_PCIX 0x07 /* PCI-X */ #define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */ #define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */ #define PCI_CAP_SIZEOF 4 /* Power Management Registers */ #define PCI_PM_PMC 2 /* PM Capabilities Register */ #define PCI_PM_CAP_VER_MASK 0x0007 /* Version */ #define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */ #define PCI_PM_CAP_RESERVED 0x0010 /* Reserved field */ #define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */ #define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxilliary power support mask */ #define PCI_PM_CAP_D1 0x0200 /* D1 power state support */ #define PCI_PM_CAP_D2 0x0400 /* D2 power state support */ #define PCI_PM_CAP_PME 0x0800 /* PME pin supported */ #define PCI_PM_CAP_PME_MASK 0xF800 /* PME Mask of all supported states */ #define PCI_PM_CAP_PME_D0 0x0800 /* PME# from D0 */ #define PCI_PM_CAP_PME_D1 0x1000 /* PME# from D1 */ #define PCI_PM_CAP_PME_D2 0x2000 /* PME# from D2 */ #define PCI_PM_CAP_PME_D3 0x4000 /* PME# from D3 (hot) */ #define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */ #define PCI_PM_CTRL 4 /* PM control and status register */ #define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */ #define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */ #define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */ #define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */ #define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */ #define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */ #define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */ #define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */ #define PCI_PM_DATA_REGISTER 7 /* (??) */ #define PCI_PM_SIZEOF 8 /* AGP registers */ #define PCI_AGP_VERSION 2 /* BCD version number */ #define PCI_AGP_RFU 3 /* Rest of capability flags */ #define PCI_AGP_STATUS 4 /* Status register */ #define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */ #define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */ #define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */ #define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */ #define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */ #define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */ #define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */ #define PCI_AGP_COMMAND 8 /* Control register */ #define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */ #define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */ #define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */ #define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */ #define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */ #define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */ #define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 2x rate */ #define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 1x rate */ #define PCI_AGP_SIZEOF 12 /* Slot Identification */ #define PCI_SID_ESR 2 /* Expansion Slot Register */ #define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */ #define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */ #define PCI_SID_CHASSIS_NR 3 /* Chassis Number */ /* Message Signalled Interrupts registers */ #define PCI_MSI_FLAGS 2 /* Various flags */ #define PCI_MSI_FLAGS_64BIT 0x80 /* 64-bit addresses allowed */ #define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */ #define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */ #define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */ #define PCI_MSI_RFU 3 /* Rest of capability flags */ #define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */ #define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */ #define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */ #define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */ /* CompactPCI Hotswap Register */ #define PCI_CHSWP_CSR 2 /* Control and Status Register */ #define PCI_CHSWP_DHA 0x01 /* Device Hiding Arm */ #define PCI_CHSWP_EIM 0x02 /* ENUM# Signal Mask */ #define PCI_CHSWP_PIE 0x04 /* Pending Insert or Extract */ #define PCI_CHSWP_LOO 0x08 /* LED On / Off */ #define PCI_CHSWP_PI 0x30 /* Programming Interface */ #define PCI_CHSWP_EXT 0x40 /* ENUM# status - extraction */ #define PCI_CHSWP_INS 0x80 /* ENUM# status - insertion */ /* PCI-X registers */ #define PCI_X_CMD 2 /* Modes & Features */ #define PCI_X_CMD_DPERR_E 0x0001 /* Data Parity Error Recovery Enable */ #define PCI_X_CMD_ERO 0x0002 /* Enable Relaxed Ordering */ #define PCI_X_CMD_MAX_READ 0x000c /* Max Memory Read Byte Count */ #define PCI_X_CMD_MAX_SPLIT 0x0070 /* Max Outstanding Split Transactions */ #define PCI_X_DEVFN 4 /* A copy of devfn. */ #define PCI_X_BUSNR 5 /* Bus segment number */ #define PCI_X_STATUS 6 /* PCI-X capabilities */ #define PCI_X_STATUS_64BIT 0x0001 /* 64-bit device */ #define PCI_X_STATUS_133MHZ 0x0002 /* 133 MHz capable */ #define PCI_X_STATUS_SPL_DISC 0x0004 /* Split Completion Discarded */ #define PCI_X_STATUS_UNX_SPL 0x0008 /* Unexpected Split Completion */ #define PCI_X_STATUS_COMPLEX 0x0010 /* Device Complexity */ #define PCI_X_STATUS_MAX_READ 0x0060 /* Designed Maximum Memory Read Count */ #define PCI_X_STATUS_MAX_SPLIT 0x0380 /* Design Max Outstanding Split Trans */ #define PCI_X_STATUS_MAX_CUM 0x1c00 /* Designed Max Cumulative Read Size */ #define PCI_X_STATUS_SPL_ERR 0x2000 /* Rcvd Split Completion Error Msg */ /* Include the ID list */ #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 */ #define PCI_DEVFN(slot,func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) #define PCI_FUNC(devfn) ((devfn) & 0x07) /* Ioctls for /proc/bus/pci/X/Y nodes. */ #define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) #define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ #define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ #define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ #define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ #ifdef __KERNEL__ #include <linux/types.h> #include <linux/config.h> #include <linux/ioport.h> #include <linux/list.h> #include <linux/errno.h> /* File state for mmap()s on /proc/bus/pci/X/Y */ enum pci_mmap_state { pci_mmap_io, pci_mmap_mem }; /* This defines the direction arg to the DMA mapping routines. */ #define PCI_DMA_BIDIRECTIONAL 0 #define PCI_DMA_TODEVICE 1 #define PCI_DMA_FROMDEVICE 2 #define PCI_DMA_NONE 3 #define DEVICE_COUNT_COMPATIBLE 4 #define DEVICE_COUNT_IRQ 2 #define DEVICE_COUNT_DMA 2 #define DEVICE_COUNT_RESOURCE 12 #define PCI_ANY_ID (~0) #define pci_present pcibios_present #define pci_for_each_dev_reverse(dev) \ for(dev = pci_dev_g(pci_devices.prev); dev != pci_dev_g(&pci_devices); dev = pci_dev_g(dev->global_list.prev)) #define pci_for_each_bus(bus) \ for(bus = pci_bus_b(pci_root_buses.next); bus != pci_bus_b(&pci_root_buses); bus = pci_bus_b(bus->node.next)) /* * The pci_dev structure is used to describe both PCI and ISAPnP devices. */ struct pci_dev { struct list_head global_list; /* node in list of all PCI devices */ 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 */ 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 hdr_type; /* PCI header type (`multi' flag masked out) */ u8 rom_base_reg; /* which config register controls the ROM */ struct pci_driver *driver; /* which driver has allocated this device */ void *driver_data; /* data private to the driver */ 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. */ u32 current_state; /* Current operating state. In ACPI-speak, this is D0-D3, D0 being fully functional, and D3 being off. */ /* device is compatible with these IDs */ unsigned short vendor_compatible[DEVICE_COUNT_COMPATIBLE]; unsigned short device_compatible[DEVICE_COUNT_COMPATIBLE]; /* * 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 */ struct resource dma_resource[DEVICE_COUNT_DMA]; struct resource irq_resource[DEVICE_COUNT_IRQ]; char name[90]; /* device name */ char slot_name[8]; /* slot name */ int active; /* ISAPnP: device is active */ int ro; /* ISAPnP: read only */ unsigned short regs; /* ISAPnP: supported registers */ /* These fields are used by common fixups */ unsigned short transparent:1; /* Transparent PCI bridge */ int (*prepare)(struct pci_dev *dev); /* ISAPnP hooks */ int (*activate)(struct pci_dev *dev); int (*deactivate)(struct pci_dev *dev); }; #define pci_dev_g(n) list_entry(n, struct pci_dev, global_list) #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list) /* * For PCI devices, the region numbers are assigned this way: * * 0-5 standard PCI regions * 6 expansion ROM * 7-10 bridges: address space assigned to buses behind the bridge */ #define PCI_ROM_RESOURCE 6 #define PCI_BRIDGE_RESOURCES 7 #define PCI_NUM_RESOURCES 11 #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 resource *resource[4]; /* address space routed to this bus */ struct pci_ops *ops; /* configuration access functions */ 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 secondary; /* number of secondary bridge */ unsigned char subordinate; /* max number of subordinate buses */ char name[48]; unsigned short vendor; unsigned short device; unsigned int serial; /* serial number */ unsigned char pnpver; /* Plug & Play version */ unsigned char productver; /* product version */ unsigned char checksum; /* if zero - checksum passed */ unsigned char pad1; }; #define pci_bus_b(n) list_entry(n, struct pci_bus, node) extern struct list_head pci_root_buses; /* list of all known PCI buses */ extern struct list_head pci_devices; /* list of all devices */ extern struct proc_dir_entry *proc_bus_pci_dir; /* * 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 /* Low-level architecture-dependent routines */ struct pci_ops { int (*read_byte)(struct pci_dev *, int where, u8 *val); int (*read_word)(struct pci_dev *, int where, u16 *val); int (*read_dword)(struct pci_dev *, int where, u32 *val); int (*write_byte)(struct pci_dev *, int where, u8 val); int (*write_word)(struct pci_dev *, int where, u16 val); int (*write_dword)(struct pci_dev *, int where, u32 val); }; struct pbus_set_ranges_data { unsigned long io_start, io_end; unsigned long mem_start, mem_end; unsigned long prefetch_start, prefetch_end; }; struct pci_device_id { unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */ unsigned int subvendor, subdevice; /* Subsystem ID's or PCI_ANY_ID */ unsigned int class, class_mask; /* (class,subclass,prog-if) triplet */ unsigned long driver_data; /* Data private to the driver */ }; struct pci_driver { struct list_head node; char *name; const struct pci_device_id *id_table; /* NULL if wants all devices */ 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 (*save_state) (struct pci_dev *dev, u32 state); /* Save Device Context */ int (*suspend) (struct pci_dev *dev, u32 state); /* Device suspended */ int (*resume) (struct pci_dev *dev); /* Device woken up */ int (*enable_wake) (struct pci_dev *dev, u32 state, int enable); /* Enable wake event */ }; /** * 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_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 /* these external functions are only available when PCI support is enabled */ #ifdef CONFIG_PCI #define pci_for_each_dev(dev) \ for(dev = pci_dev_g(pci_devices.next); dev != pci_dev_g(&pci_devices); dev = pci_dev_g(dev->global_list.next)) void pcibios_init(void); void pcibios_fixup_bus(struct pci_bus *); int pcibios_enable_device(struct pci_dev *, int mask); char *pcibios_setup (char *str); /* Used only when drivers/pci/setup.c is used */ void pcibios_align_resource(void *, struct resource *, unsigned long, unsigned long); void pcibios_update_resource(struct pci_dev *, struct resource *, struct resource *, int); void pcibios_update_irq(struct pci_dev *, int irq); void pcibios_fixup_pbus_ranges(struct pci_bus *, struct pbus_set_ranges_data *); /* Backward compatibility, don't use in new code! */ int pcibios_present(void); int pcibios_read_config_byte (unsigned char bus, unsigned char dev_fn, unsigned char where, unsigned char *val); int pcibios_read_config_word (unsigned char bus, unsigned char dev_fn, unsigned char where, unsigned short *val); int pcibios_read_config_dword (unsigned char bus, unsigned char dev_fn, unsigned char where, unsigned int *val); int pcibios_write_config_byte (unsigned char bus, unsigned char dev_fn, unsigned char where, unsigned char val); int pcibios_write_config_word (unsigned char bus, unsigned char dev_fn, unsigned char where, unsigned short val); int pcibios_write_config_dword (unsigned char bus, unsigned char dev_fn, unsigned char where, unsigned int val); int pcibios_find_class (unsigned int class_code, unsigned short index, unsigned char *bus, unsigned char *dev_fn); int pcibios_find_device (unsigned short vendor, unsigned short dev_id, unsigned short index, unsigned char *bus, unsigned char *dev_fn); /* Generic PCI functions used internally */ void pci_init(void); int pci_bus_exists(const struct list_head *list, int nr); struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata); struct pci_bus *pci_alloc_primary_bus(int bus); struct pci_dev *pci_scan_slot(struct pci_dev *temp); int pci_proc_attach_device(struct pci_dev *dev); int pci_proc_detach_device(struct pci_dev *dev); int pci_proc_attach_bus(struct pci_bus *bus); int pci_proc_detach_bus(struct pci_bus *bus); void pci_name_device(struct pci_dev *dev); char *pci_class_name(u32 class); void pci_read_bridge_bases(struct pci_bus *child); struct resource *pci_find_parent_resource(const struct pci_dev *dev, struct resource *res); int pci_setup_device(struct pci_dev *dev); int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); /* Generic PCI functions exported to card drivers */ struct pci_dev *pci_find_device (unsigned int vendor, unsigned int device, const struct pci_dev *from); struct pci_dev *pci_find_subsys (unsigned int vendor, unsigned int device, unsigned int ss_vendor, unsigned int ss_device, const struct pci_dev *from); struct pci_dev *pci_find_class (unsigned int class, const struct pci_dev *from); struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn); int pci_find_capability (struct pci_dev *dev, int cap); int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val); int pci_read_config_word(struct pci_dev *dev, int where, u16 *val); int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val); int pci_write_config_byte(struct pci_dev *dev, int where, u8 val); int pci_write_config_word(struct pci_dev *dev, int where, u16 val); int pci_write_config_dword(struct pci_dev *dev, int where, u32 val); int pci_enable_device(struct pci_dev *dev); int pci_enable_device_bars(struct pci_dev *dev, int mask); void pci_disable_device(struct pci_dev *dev); void pci_set_master(struct pci_dev *dev); #define HAVE_PCI_SET_MWI int pci_set_mwi(struct pci_dev *dev); void pci_clear_mwi(struct pci_dev *dev); int pci_set_dma_mask(struct pci_dev *dev, u64 mask); int pci_dac_set_dma_mask(struct pci_dev *dev, u64 mask); int pci_assign_resource(struct pci_dev *dev, int i); /* Power management related routines */ int pci_save_state(struct pci_dev *dev, u32 *buffer); int pci_restore_state(struct pci_dev *dev, u32 *buffer); int pci_set_power_state(struct pci_dev *dev, int state); int pci_enable_wake(struct pci_dev *dev, u32 state, int enable); /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ int pci_claim_resource(struct pci_dev *, int); void pci_assign_unassigned_resources(void); void pdev_enable_device(struct pci_dev *); void pdev_sort_resources(struct pci_dev *, struct resource_list *); unsigned long pci_bridge_check_io(struct pci_dev *); void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), int (*)(struct pci_dev *, u8, u8)); #define HAVE_PCI_REQ_REGIONS 2 int pci_request_regions(struct pci_dev *, char *); void pci_release_regions(struct pci_dev *); int pci_request_region(struct pci_dev *, int, char *); void pci_release_region(struct pci_dev *, int); /* New-style probing supporting hot-pluggable devices */ int pci_register_driver(struct pci_driver *); void pci_unregister_driver(struct pci_driver *); void pci_insert_device(struct pci_dev *, struct pci_bus *); void pci_remove_device(struct pci_dev *); struct pci_driver *pci_dev_driver(const struct pci_dev *); const struct pci_device_id *pci_match_device(const struct pci_device_id *ids, const struct pci_dev *dev); void pci_announce_device_to_drivers(struct pci_dev *); unsigned int pci_do_scan_bus(struct pci_bus *bus); struct pci_bus * pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr); /* kmem_cache style wrapper around pci_alloc_consistent() */ struct pci_pool *pci_pool_create (const char *name, struct pci_dev *dev, size_t size, size_t align, size_t allocation, int flags); void pci_pool_destroy (struct pci_pool *pool); void *pci_pool_alloc (struct pci_pool *pool, int flags, dma_addr_t *handle); void pci_pool_free (struct pci_pool *pool, void *vaddr, dma_addr_t addr); #endif /* CONFIG_PCI */ /* Include architecture-dependent settings and functions */ #include <asm/pci.h> /* * If the system does not have PCI, clearly these return errors. Define * these as simple inline functions to avoid hair in drivers. */ #ifndef CONFIG_PCI static inline int pcibios_present(void) { return 0; } static inline int pcibios_find_class (unsigned int class_code, unsigned short index, unsigned char *bus, unsigned char *dev_fn) { return PCIBIOS_DEVICE_NOT_FOUND; } #define _PCI_NOP(o,s,t) \ static inline int pcibios_##o##_config_##s (u8 bus, u8 dfn, u8 where, t val) \ { return PCIBIOS_FUNC_NOT_SUPPORTED; } \ 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_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *from) { return NULL; } static inline struct pci_dev *pci_find_class(unsigned int class, const struct pci_dev *from) { return NULL; } static inline struct pci_dev *pci_find_slot(unsigned int bus, unsigned int devfn) { return NULL; } static inline struct pci_dev *pci_find_subsys(unsigned int vendor, unsigned int device, unsigned int ss_vendor, unsigned int ss_device, const struct pci_dev *from) { return NULL; } static inline void pci_set_master(struct pci_dev *dev) { } static inline int pci_enable_device_bars(struct pci_dev *dev, int mask) { return -EBUSY; } 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_module_init(struct pci_driver *drv) { return -ENODEV; } static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; } static inline int pci_dac_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; } static inline int pci_assign_resource(struct pci_dev *dev, int i) { return -EBUSY;} 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 scsi_to_pci_dma_dir(unsigned char scsi_dir) { return scsi_dir; } static inline int pci_find_capability (struct pci_dev *dev, int cap) {return 0; } static inline const struct pci_device_id *pci_match_device(const struct pci_device_id *ids, const struct pci_dev *dev) { return NULL; } /* Power management related routines */ static inline int pci_save_state(struct pci_dev *dev, u32 *buffer) { return 0; } static inline int pci_restore_state(struct pci_dev *dev, u32 *buffer) { return 0; } static inline int pci_set_power_state(struct pci_dev *dev, int state) { return 0; } static inline int pci_enable_wake(struct pci_dev *dev, u32 state, int enable) { return 0; } #define pci_for_each_dev(dev) \ for(dev = NULL; 0; ) #else /* * a helper function which helps ensure correct pci_driver * setup and cleanup for commonly-encountered hotplug/modular cases * * This MUST stay in a header, as it checks for -DMODULE */ static inline int pci_module_init(struct pci_driver *drv) { int rc = pci_register_driver (drv); if (rc > 0) return 0; /* iff CONFIG_HOTPLUG and built into kernel, we should * leave the driver around for future hotplug events. * For the module case, a hotplug daemon of some sort * should load a module in response to an insert event. */ #if defined(CONFIG_HOTPLUG) && !defined(MODULE) if (rc == 0) return 0; #else if (rc == 0) rc = -ENODEV; #endif /* if we get here, we need to clean up pci driver instance * and return some sort of error */ pci_unregister_driver (drv); return rc; } #endif /* !CONFIG_PCI */ /* 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. Currently stored as pci_dev::driver_data, * a void pointer, but it is not present on older kernels. */ static inline void *pci_get_drvdata (struct pci_dev *pdev) { return pdev->driver_data; } static inline void pci_set_drvdata (struct pci_dev *pdev, void *data) { pdev->driver_data = data; } static inline char *pci_name(struct pci_dev *pdev) { return pdev->slot_name; } /* * 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 { int pass; u16 vendor, device; /* You can use PCI_ANY_ID here of course */ void (*hook)(struct pci_dev *dev); }; extern struct pci_fixup pcibios_fixups[]; #define PCI_FIXUP_HEADER 1 /* Called immediately after reading configuration header */ #define PCI_FIXUP_FINAL 2 /* Final phase of device fixups */ void pci_fixup_device(int pass, struct pci_dev *dev); extern int pci_pci_problems; #define PCIPCI_FAIL 1 #define PCIPCI_TRITON 2 #define PCIPCI_NATOMA 4 #define PCIPCI_VIAETBF 8 #define PCIPCI_VSFX 16 #define PCIPCI_ALIMAGIK 32 #endif /* __KERNEL__ */ #endif /* LINUX_PCI_H */
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