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- #ifndef PCI_H
- #define PCI_H
-
- /*
- ** Support for NE2000 PCI clones added David Monro June 1997
- ** Generalised for other PCI NICs by Ken Yap July 1997
- **
- ** Most of this is taken from:
- **
- ** /usr/src/linux/drivers/pci/pci.c
- ** /usr/src/linux/include/linux/pci.h
- ** /usr/src/linux/arch/i386/bios32.c
- ** /usr/src/linux/include/linux/bios32.h
- ** /usr/src/linux/drivers/net/ne.c
- */
-
- /*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2, or (at
- * your option) any later version.
- */
-
- #include "stdint.h"
- #include "pci_ids.h"
-
- /*
- * PCI constants
- *
- */
-
- #define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
- #define PCI_COMMAND_MEM 0x2 /* Enable response in mem space */
- #define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */
- #define PCI_LATENCY_TIMER 0x0d /* 8 bits */
- #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_VENDOR_ID 0x00 /* 16 bits */
- #define PCI_DEVICE_ID 0x02 /* 16 bits */
- #define PCI_COMMAND 0x04 /* 16 bits */
-
- #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_REVISION 0x08 /* 8 bits */
- #define PCI_REVISION_ID 0x08 /* 8 bits */
- #define PCI_CLASS_REVISION 0x08 /* 32 bits */
- #define PCI_CLASS_CODE 0x0b /* 8 bits */
- #define PCI_SUBCLASS_CODE 0x0a /* 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
-
-
- /* Header type 0 (normal devices) */
- #define PCI_CARDBUS_CIS 0x28
- #define PCI_SUBSYSTEM_VENDOR_ID 0x2c
- #define PCI_SUBSYSTEM_ID 0x2e
-
- #define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */
- #define PCI_BASE_ADDRESS_1 0x14 /* 32 bits */
- #define PCI_BASE_ADDRESS_2 0x18 /* 32 bits */
- #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_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 */
-
- #ifndef PCI_BASE_ADDRESS_IO_MASK
- #define PCI_BASE_ADDRESS_IO_MASK (~0x03)
- #endif
- #ifndef PCI_BASE_ADDRESS_MEM_MASK
- #define PCI_BASE_ADDRESS_MEM_MASK (~0x0f)
- #endif
- #define PCI_BASE_ADDRESS_SPACE_IO 0x01
- #define PCI_ROM_ADDRESS 0x30 /* 32 bits */
- #define PCI_ROM_ADDRESS_ENABLE 0x01 /* Write 1 to enable ROM,
- bits 31..11 are address,
- 10..2 are reserved */
-
- #define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */
-
- #define PCI_INTERRUPT_LINE 0x3c /* IRQ number (0-15) */
- #define PCI_INTERRUPT_PIN 0x3d /* IRQ pin on PCI bus (A-D) */
-
- /* 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 0x0f /* I/O bridging type */
- #define PCI_IO_RANGE_TYPE_16 0x00
- #define PCI_IO_RANGE_TYPE_32 0x01
- #define PCI_IO_RANGE_MASK ~0x0f
- #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 0x0f
- #define PCI_MEMORY_RANGE_MASK ~0x0f
- #define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */
- #define PCI_PREF_MEMORY_LIMIT 0x26
- #define PCI_PREF_RANGE_TYPE_MASK 0x0f
- #define PCI_PREF_RANGE_TYPE_32 0x00
- #define PCI_PREF_RANGE_TYPE_64 0x01
- #define PCI_PREF_RANGE_MASK ~0x0f
- #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 */
-
- #define PCI_CB_CAPABILITY_LIST 0x14
-
- /* 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_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 */
- /*
- * A physical PCI device
- *
- */
- struct dev;
- struct pci_device {
- char * magic; /* must be first */
- struct dev * dev;
- uint32_t membase; /* BAR 1 */
- uint32_t ioaddr; /* first IO BAR */
- uint16_t vendor, dev_id;
- uint16_t class;
- uint16_t busdevfn;
- uint8_t revision;
- uint8_t irq;
- uint8_t already_tried;
- };
- #define PCI_BUS(busdevfn) ( ( (busdevfn) >> 8 ) & 0xff )
- #define PCI_DEV(busdevfn) ( ( (busdevfn) >> 3 ) & 0x1f )
- #define PCI_FUNC(busdevfn) ( (busdevfn) & 0x07 )
-
- /*
- * An individual PCI device identified by vendor and device IDs
- *
- */
- struct pci_id {
- unsigned short vendor, dev_id;
- const char *name;
- };
-
- /*
- * PCI_ROM is used to build up entries in a struct pci_id array. It
- * is also parsed by parserom.pl to generate Makefile rules and files
- * for rom-o-matic.
- */
- #define PCI_ROM( rom_vendor, rom_dev_id, rom_name, rom_description ) { \
- .vendor = rom_vendor, \
- .dev_id = rom_dev_id, \
- .name = rom_name, \
- }
-
- /*
- * A PCI driver, with a device ID (struct pci_id) table and an
- * optional class.
- *
- * Set the class to something other than PCI_NO_CLASS if the driver
- * can handle an entire class of devices.
- *
- */
- struct pci_driver {
- const char *name;
- struct pci_id *ids;
- int id_count;
- uint16_t class;
- };
- #define PCI_NO_CLASS 0
-
- /*
- * Define a PCI driver.
- *
- */
- #define PCI_DRIVER( driver_name, pci_ids, pci_class ) { \
- .name = driver_name, \
- .ids = pci_ids, \
- .id_count = sizeof ( pci_ids ) / sizeof ( pci_ids[0] ), \
- .class = pci_class, \
- }
-
- /*
- * These are the functions we expect pci_io.c to provide.
- *
- */
- extern int pci_read_config_byte ( struct pci_device *dev, unsigned int where,
- uint8_t *value );
- extern int pci_write_config_byte ( struct pci_device *dev, unsigned int where,
- uint8_t value );
- extern int pci_read_config_word ( struct pci_device *dev, unsigned int where,
- uint16_t *value );
- extern int pci_write_config_word ( struct pci_device *dev, unsigned int where,
- uint16_t value );
- extern int pci_read_config_dword ( struct pci_device *dev, unsigned int where,
- uint32_t *value );
- extern int pci_write_config_dword ( struct pci_device *dev, unsigned int where,
- uint32_t value );
- extern unsigned long pci_bus_base ( struct pci_device *dev );
-
- /*
- * Functions in pci.c
- *
- */
- extern struct pci_device * pci_device ( struct dev *dev );
- extern int find_pci_device ( struct pci_device *pci,
- struct pci_driver *driver );
- extern void adjust_pci_device ( struct pci_device *pci );
- extern unsigned long pci_bar_start ( struct pci_device *pci,
- unsigned int bar );
- extern unsigned long pci_bar_size ( struct pci_device *pci, unsigned int bar );
- extern int pci_find_capability ( struct pci_device *pci, int capability );
-
- #endif /* PCI_H */
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