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u-boot/include/pci.h
Thierry Reding 4efe52bf23 pci: Honour pci_skip_dev() 
When enumerating devices, honour the pci_skip_dev() function. This can
be used by PCI controller drivers to restrict which devices will be
probed.

This is required by the NVIDIA Tegra PCIe controller driver, which will
fail with a data abort exception if an access is attempted to a device
number larger than 0 outside of bus 0. pci_skip_dev() is therefore
implemented to prevent any such accesses.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-11-23 06:49:01 -05:00

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/*
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Andreas Heppel <aheppel@sysgo.de>
*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _PCI_H
#define _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_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_CLASS_CODE 0x0b /* Device class code */
#define PCI_CLASS_CODE_TOO_OLD 0x00
#define PCI_CLASS_CODE_STORAGE 0x01
#define PCI_CLASS_CODE_NETWORK 0x02
#define PCI_CLASS_CODE_DISPLAY 0x03
#define PCI_CLASS_CODE_MULTIMEDIA 0x04
#define PCI_CLASS_CODE_MEMORY 0x05
#define PCI_CLASS_CODE_BRIDGE 0x06
#define PCI_CLASS_CODE_COMM 0x07
#define PCI_CLASS_CODE_PERIPHERAL 0x08
#define PCI_CLASS_CODE_INPUT 0x09
#define PCI_CLASS_CODE_DOCKING 0x0A
#define PCI_CLASS_CODE_PROCESSOR 0x0B
#define PCI_CLASS_CODE_SERIAL 0x0C
#define PCI_CLASS_CODE_WIRELESS 0x0D
#define PCI_CLASS_CODE_I2O 0x0E
#define PCI_CLASS_CODE_SATELLITE 0x0F
#define PCI_CLASS_CODE_CRYPTO 0x10
#define PCI_CLASS_CODE_DATA 0x11
/* Base Class 0x12 - 0xFE is reserved */
#define PCI_CLASS_CODE_OTHER 0xFF
#define PCI_CLASS_SUB_CODE 0x0a /* Device sub-class code */
#define PCI_CLASS_SUB_CODE_TOO_OLD_NOTVGA 0x00
#define PCI_CLASS_SUB_CODE_TOO_OLD_VGA 0x01
#define PCI_CLASS_SUB_CODE_STORAGE_SCSI 0x00
#define PCI_CLASS_SUB_CODE_STORAGE_IDE 0x01
#define PCI_CLASS_SUB_CODE_STORAGE_FLOPPY 0x02
#define PCI_CLASS_SUB_CODE_STORAGE_IPIBUS 0x03
#define PCI_CLASS_SUB_CODE_STORAGE_RAID 0x04
#define PCI_CLASS_SUB_CODE_STORAGE_ATA 0x05
#define PCI_CLASS_SUB_CODE_STORAGE_SATA 0x06
#define PCI_CLASS_SUB_CODE_STORAGE_SAS 0x07
#define PCI_CLASS_SUB_CODE_STORAGE_OTHER 0x80
#define PCI_CLASS_SUB_CODE_NETWORK_ETHERNET 0x00
#define PCI_CLASS_SUB_CODE_NETWORK_TOKENRING 0x01
#define PCI_CLASS_SUB_CODE_NETWORK_FDDI 0x02
#define PCI_CLASS_SUB_CODE_NETWORK_ATM 0x03
#define PCI_CLASS_SUB_CODE_NETWORK_ISDN 0x04
#define PCI_CLASS_SUB_CODE_NETWORK_WORLDFIP 0x05
#define PCI_CLASS_SUB_CODE_NETWORK_PICMG 0x06
#define PCI_CLASS_SUB_CODE_NETWORK_OTHER 0x80
#define PCI_CLASS_SUB_CODE_DISPLAY_VGA 0x00
#define PCI_CLASS_SUB_CODE_DISPLAY_XGA 0x01
#define PCI_CLASS_SUB_CODE_DISPLAY_3D 0x02
#define PCI_CLASS_SUB_CODE_DISPLAY_OTHER 0x80
#define PCI_CLASS_SUB_CODE_MULTIMEDIA_VIDEO 0x00
#define PCI_CLASS_SUB_CODE_MULTIMEDIA_AUDIO 0x01
#define PCI_CLASS_SUB_CODE_MULTIMEDIA_PHONE 0x02
#define PCI_CLASS_SUB_CODE_MULTIMEDIA_OTHER 0x80
#define PCI_CLASS_SUB_CODE_MEMORY_RAM 0x00
#define PCI_CLASS_SUB_CODE_MEMORY_FLASH 0x01
#define PCI_CLASS_SUB_CODE_MEMORY_OTHER 0x80
#define PCI_CLASS_SUB_CODE_BRIDGE_HOST 0x00
#define PCI_CLASS_SUB_CODE_BRIDGE_ISA 0x01
#define PCI_CLASS_SUB_CODE_BRIDGE_EISA 0x02
#define PCI_CLASS_SUB_CODE_BRIDGE_MCA 0x03
#define PCI_CLASS_SUB_CODE_BRIDGE_PCI 0x04
#define PCI_CLASS_SUB_CODE_BRIDGE_PCMCIA 0x05
#define PCI_CLASS_SUB_CODE_BRIDGE_NUBUS 0x06
#define PCI_CLASS_SUB_CODE_BRIDGE_CARDBUS 0x07
#define PCI_CLASS_SUB_CODE_BRIDGE_RACEWAY 0x08
#define PCI_CLASS_SUB_CODE_BRIDGE_SEMI_PCI 0x09
#define PCI_CLASS_SUB_CODE_BRIDGE_INFINIBAND 0x0A
#define PCI_CLASS_SUB_CODE_BRIDGE_OTHER 0x80
#define PCI_CLASS_SUB_CODE_COMM_SERIAL 0x00
#define PCI_CLASS_SUB_CODE_COMM_PARALLEL 0x01
#define PCI_CLASS_SUB_CODE_COMM_MULTIPORT 0x02
#define PCI_CLASS_SUB_CODE_COMM_MODEM 0x03
#define PCI_CLASS_SUB_CODE_COMM_GPIB 0x04
#define PCI_CLASS_SUB_CODE_COMM_SMARTCARD 0x05
#define PCI_CLASS_SUB_CODE_COMM_OTHER 0x80
#define PCI_CLASS_SUB_CODE_PERIPHERAL_PIC 0x00
#define PCI_CLASS_SUB_CODE_PERIPHERAL_DMA 0x01
#define PCI_CLASS_SUB_CODE_PERIPHERAL_TIMER 0x02
#define PCI_CLASS_SUB_CODE_PERIPHERAL_RTC 0x03
#define PCI_CLASS_SUB_CODE_PERIPHERAL_HOTPLUG 0x04
#define PCI_CLASS_SUB_CODE_PERIPHERAL_SD 0x05
#define PCI_CLASS_SUB_CODE_PERIPHERAL_OTHER 0x80
#define PCI_CLASS_SUB_CODE_INPUT_KEYBOARD 0x00
#define PCI_CLASS_SUB_CODE_INPUT_DIGITIZER 0x01
#define PCI_CLASS_SUB_CODE_INPUT_MOUSE 0x02
#define PCI_CLASS_SUB_CODE_INPUT_SCANNER 0x03
#define PCI_CLASS_SUB_CODE_INPUT_GAMEPORT 0x04
#define PCI_CLASS_SUB_CODE_INPUT_OTHER 0x80
#define PCI_CLASS_SUB_CODE_DOCKING_GENERIC 0x00
#define PCI_CLASS_SUB_CODE_DOCKING_OTHER 0x80
#define PCI_CLASS_SUB_CODE_PROCESSOR_386 0x00
#define PCI_CLASS_SUB_CODE_PROCESSOR_486 0x01
#define PCI_CLASS_SUB_CODE_PROCESSOR_PENTIUM 0x02
#define PCI_CLASS_SUB_CODE_PROCESSOR_ALPHA 0x10
#define PCI_CLASS_SUB_CODE_PROCESSOR_POWERPC 0x20
#define PCI_CLASS_SUB_CODE_PROCESSOR_MIPS 0x30
#define PCI_CLASS_SUB_CODE_PROCESSOR_COPROC 0x40
#define PCI_CLASS_SUB_CODE_SERIAL_1394 0x00
#define PCI_CLASS_SUB_CODE_SERIAL_ACCESSBUS 0x01
#define PCI_CLASS_SUB_CODE_SERIAL_SSA 0x02
#define PCI_CLASS_SUB_CODE_SERIAL_USB 0x03
#define PCI_CLASS_SUB_CODE_SERIAL_FIBRECHAN 0x04
#define PCI_CLASS_SUB_CODE_SERIAL_SMBUS 0x05
#define PCI_CLASS_SUB_CODE_SERIAL_INFINIBAND 0x06
#define PCI_CLASS_SUB_CODE_SERIAL_IPMI 0x07
#define PCI_CLASS_SUB_CODE_SERIAL_SERCOS 0x08
#define PCI_CLASS_SUB_CODE_SERIAL_CANBUS 0x09
#define PCI_CLASS_SUB_CODE_WIRELESS_IRDA 0x00
#define PCI_CLASS_SUB_CODE_WIRELESS_IR 0x01
#define PCI_CLASS_SUB_CODE_WIRELESS_RF 0x10
#define PCI_CLASS_SUB_CODE_WIRELESS_BLUETOOTH 0x11
#define PCI_CLASS_SUB_CODE_WIRELESS_BROADBAND 0x12
#define PCI_CLASS_SUB_CODE_WIRELESS_80211A 0x20
#define PCI_CLASS_SUB_CODE_WIRELESS_80211B 0x21
#define PCI_CLASS_SUB_CODE_WIRELESS_OTHER 0x80
#define PCI_CLASS_SUB_CODE_I2O_V1_0 0x00
#define PCI_CLASS_SUB_CODE_SATELLITE_TV 0x01
#define PCI_CLASS_SUB_CODE_SATELLITE_AUDIO 0x02
#define PCI_CLASS_SUB_CODE_SATELLITE_VOICE 0x03
#define PCI_CLASS_SUB_CODE_SATELLITE_DATA 0x04
#define PCI_CLASS_SUB_CODE_CRYPTO_NETWORK 0x00
#define PCI_CLASS_SUB_CODE_CRYPTO_ENTERTAINMENT 0x10
#define PCI_CLASS_SUB_CODE_CRYPTO_OTHER 0x80
#define PCI_CLASS_SUB_CODE_DATA_DPIO 0x00
#define PCI_CLASS_SUB_CODE_DATA_PERFCNTR 0x01
#define PCI_CLASS_SUB_CODE_DATA_COMMSYNC 0x10
#define PCI_CLASS_SUB_CODE_DATA_MGMT 0x20
#define PCI_CLASS_SUB_CODE_DATA_OTHER 0x80
#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 (~0x0fULL)
#define PCI_BASE_ADDRESS_IO_MASK (~0x03ULL)
/* 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 (~0x7ffULL)
#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 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 */
/* From 440ep */
#define PCI_ERREN 0x48 /* Error Enable */
#define PCI_ERRSTS 0x49 /* Error Status */
#define PCI_BRDGOPT1 0x4A /* PCI Bridge Options 1 */
#define PCI_PLBSESR0 0x4C /* PCI PLB Slave Error Syndrome 0 */
#define PCI_PLBSESR1 0x50 /* PCI PLB Slave Error Syndrome 1 */
#define PCI_PLBSEAR 0x54 /* PCI PLB Slave Error Address */
#define PCI_CAPID 0x58 /* Capability Identifier */
#define PCI_NEXTITEMPTR 0x59 /* Next Item Pointer */
#define PCI_PMC 0x5A /* Power Management Capabilities */
#define PCI_PMCSR 0x5C /* Power Management Control Status */
#define PCI_PMCSRBSE 0x5E /* PMCSR PCI to PCI Bridge Support Extensions */
#define PCI_BRDGOPT2 0x60 /* PCI Bridge Options 2 */
#define PCI_PMSCRR 0x64 /* Power Management State Change Request Re. */
/* 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 ~0x03
/* 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_EXP 0x10 /* PCI Express */
#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_CAP_VER_MASK 0x0007 /* Version */
#define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */
#define PCI_PM_CAP_AUX_POWER 0x0010 /* Auxilliary power support */
#define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */
#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_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 4x rate */
#define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 4x rate */
#define PCI_AGP_SIZEOF 12
/* PCI-X registers */
#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 0x0000 /* Max Memory Read Byte Count */
#define PCI_X_CMD_MAX_SPLIT 0x0030 /* Max Outstanding Split Transactions */
#define PCI_X_CMD_VERSION(x) (((x) >> 12) & 3) /* Version */
/* 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 */
#define PCI_MAX_PCI_DEVICES 32
#define PCI_MAX_PCI_FUNCTIONS 8
#define PCI_FIND_CAP_TTL 0x48
#define CAP_START_POS 0x40
/* Include the ID list */
#include <pci_ids.h>
#ifndef __ASSEMBLY__
#ifdef CONFIG_SYS_PCI_64BIT
typedef u64 pci_addr_t;
typedef u64 pci_size_t;
#else
typedef u32 pci_addr_t;
typedef u32 pci_size_t;
#endif
struct pci_region {
pci_addr_t bus_start; /* Start on the bus */
phys_addr_t phys_start; /* Start in physical address space */
pci_size_t size; /* Size */
unsigned long flags; /* Resource flags */
pci_addr_t bus_lower;
};
#define PCI_REGION_MEM 0x00000000 /* PCI memory space */
#define PCI_REGION_IO 0x00000001 /* PCI IO space */
#define PCI_REGION_TYPE 0x00000001
#define PCI_REGION_PREFETCH 0x00000008 /* prefetchable PCI memory */
#define PCI_REGION_SYS_MEMORY 0x00000100 /* System memory */
#define PCI_REGION_RO 0x00000200 /* Read-only memory */
static inline void pci_set_region(struct pci_region *reg,
pci_addr_t bus_start,
phys_addr_t phys_start,
pci_size_t size,
unsigned long flags) {
reg->bus_start = bus_start;
reg->phys_start = phys_start;
reg->size = size;
reg->flags = flags;
}
typedef int pci_dev_t;
#define PCI_BUS(d) (((d) >> 16) & 0xff)
#define PCI_DEV(d) (((d) >> 11) & 0x1f)
#define PCI_FUNC(d) (((d) >> 8) & 0x7)
#define PCI_BDF(b,d,f) ((b) << 16 | (d) << 11 | (f) << 8)
#define PCI_ANY_ID (~0)
struct pci_device_id {
unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */
};
struct pci_controller;
struct pci_config_table {
unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */
unsigned int class; /* Class ID, or PCI_ANY_ID */
unsigned int bus; /* Bus number, or PCI_ANY_ID */
unsigned int dev; /* Device number, or PCI_ANY_ID */
unsigned int func; /* Function number, or PCI_ANY_ID */
void (*config_device)(struct pci_controller* hose, pci_dev_t dev,
struct pci_config_table *);
unsigned long priv[3];
};
extern void pci_cfgfunc_do_nothing(struct pci_controller* hose, pci_dev_t dev,
struct pci_config_table *);
extern void pci_cfgfunc_config_device(struct pci_controller* hose, pci_dev_t dev,
struct pci_config_table *);
#define MAX_PCI_REGIONS 7
#define INDIRECT_TYPE_NO_PCIE_LINK 1
/*
* Structure of a PCI controller (host bridge)
*/
struct pci_controller {
struct pci_controller *next;
int first_busno;
int last_busno;
volatile unsigned int *cfg_addr;
volatile unsigned char *cfg_data;
int indirect_type;
struct pci_region regions[MAX_PCI_REGIONS];
int region_count;
struct pci_config_table *config_table;
void (*fixup_irq)(struct pci_controller *, pci_dev_t);
/* Low-level architecture-dependent routines */
int (*read_byte)(struct pci_controller*, pci_dev_t, int where, u8 *);
int (*read_word)(struct pci_controller*, pci_dev_t, int where, u16 *);
int (*read_dword)(struct pci_controller*, pci_dev_t, int where, u32 *);
int (*write_byte)(struct pci_controller*, pci_dev_t, int where, u8);
int (*write_word)(struct pci_controller*, pci_dev_t, int where, u16);
int (*write_dword)(struct pci_controller*, pci_dev_t, int where, u32);
/* Used by auto config */
struct pci_region *pci_mem, *pci_io, *pci_prefetch;
/* Used by ppc405 autoconfig*/
struct pci_region *pci_fb;
int current_busno;
void *priv_data;
};
static inline void pci_set_ops(struct pci_controller *hose,
int (*read_byte)(struct pci_controller*,
pci_dev_t, int where, u8 *),
int (*read_word)(struct pci_controller*,
pci_dev_t, int where, u16 *),
int (*read_dword)(struct pci_controller*,
pci_dev_t, int where, u32 *),
int (*write_byte)(struct pci_controller*,
pci_dev_t, int where, u8),
int (*write_word)(struct pci_controller*,
pci_dev_t, int where, u16),
int (*write_dword)(struct pci_controller*,
pci_dev_t, int where, u32)) {
hose->read_byte = read_byte;
hose->read_word = read_word;
hose->read_dword = read_dword;
hose->write_byte = write_byte;
hose->write_word = write_word;
hose->write_dword = write_dword;
}
#ifdef CONFIG_PCI_INDIRECT_BRIDGE
extern void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data);
#endif
extern phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose,
pci_addr_t addr, unsigned long flags);
extern pci_addr_t pci_hose_phys_to_bus(struct pci_controller* hose,
phys_addr_t addr, unsigned long flags);
#define pci_phys_to_bus(dev, addr, flags) \
pci_hose_phys_to_bus(pci_bus_to_hose(PCI_BUS(dev)), (addr), (flags))
#define pci_bus_to_phys(dev, addr, flags) \
pci_hose_bus_to_phys(pci_bus_to_hose(PCI_BUS(dev)), (addr), (flags))
#define pci_virt_to_bus(dev, addr, flags) \
pci_hose_phys_to_bus(pci_bus_to_hose(PCI_BUS(dev)), \
(virt_to_phys(addr)), (flags))
#define pci_bus_to_virt(dev, addr, flags, len, map_flags) \
map_physmem(pci_hose_bus_to_phys(pci_bus_to_hose(PCI_BUS(dev)), \
(addr), (flags)), \
(len), (map_flags))
#define pci_phys_to_mem(dev, addr) \
pci_phys_to_bus((dev), (addr), PCI_REGION_MEM)
#define pci_mem_to_phys(dev, addr) \
pci_bus_to_phys((dev), (addr), PCI_REGION_MEM)
#define pci_phys_to_io(dev, addr) pci_phys_to_bus((dev), (addr), PCI_REGION_IO)
#define pci_io_to_phys(dev, addr) pci_bus_to_phys((dev), (addr), PCI_REGION_IO)
#define pci_virt_to_mem(dev, addr) \
pci_virt_to_bus((dev), (addr), PCI_REGION_MEM)
#define pci_mem_to_virt(dev, addr, len, map_flags) \
pci_bus_to_virt((dev), (addr), PCI_REGION_MEM, (len), (map_flags))
#define pci_virt_to_io(dev, addr) \
pci_virt_to_bus((dev), (addr), PCI_REGION_IO)
#define pci_io_to_virt(dev, addr, len, map_flags) \
pci_bus_to_virt((dev), (addr), PCI_REGION_IO, (len), (map_flags))
extern int pci_hose_read_config_byte(struct pci_controller *hose,
pci_dev_t dev, int where, u8 *val);
extern int pci_hose_read_config_word(struct pci_controller *hose,
pci_dev_t dev, int where, u16 *val);
extern int pci_hose_read_config_dword(struct pci_controller *hose,
pci_dev_t dev, int where, u32 *val);
extern int pci_hose_write_config_byte(struct pci_controller *hose,
pci_dev_t dev, int where, u8 val);
extern int pci_hose_write_config_word(struct pci_controller *hose,
pci_dev_t dev, int where, u16 val);
extern int pci_hose_write_config_dword(struct pci_controller *hose,
pci_dev_t dev, int where, u32 val);
extern int pci_read_config_byte(pci_dev_t dev, int where, u8 *val);
extern int pci_read_config_word(pci_dev_t dev, int where, u16 *val);
extern int pci_read_config_dword(pci_dev_t dev, int where, u32 *val);
extern int pci_write_config_byte(pci_dev_t dev, int where, u8 val);
extern int pci_write_config_word(pci_dev_t dev, int where, u16 val);
extern int pci_write_config_dword(pci_dev_t dev, int where, u32 val);
extern int pci_hose_read_config_byte_via_dword(struct pci_controller *hose,
pci_dev_t dev, int where, u8 *val);
extern int pci_hose_read_config_word_via_dword(struct pci_controller *hose,
pci_dev_t dev, int where, u16 *val);
extern int pci_hose_write_config_byte_via_dword(struct pci_controller *hose,
pci_dev_t dev, int where, u8 val);
extern int pci_hose_write_config_word_via_dword(struct pci_controller *hose,
pci_dev_t dev, int where, u16 val);
extern void *pci_map_bar(pci_dev_t pdev, int bar, int flags);
extern void pci_register_hose(struct pci_controller* hose);
extern struct pci_controller* pci_bus_to_hose(int bus);
extern struct pci_controller *find_hose_by_cfg_addr(void *cfg_addr);
extern int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev);
extern int pci_hose_scan(struct pci_controller *hose);
extern int pci_hose_scan_bus(struct pci_controller *hose, int bus);
extern void pciauto_region_init(struct pci_region* res);
extern void pciauto_region_align(struct pci_region *res, pci_size_t size);
extern int pciauto_region_allocate(struct pci_region* res, pci_size_t size, pci_addr_t *bar);
extern void pciauto_setup_device(struct pci_controller *hose,
pci_dev_t dev, int bars_num,
struct pci_region *mem,
struct pci_region *prefetch,
struct pci_region *io);
extern void pciauto_prescan_setup_bridge(struct pci_controller *hose,
pci_dev_t dev, int sub_bus);
extern void pciauto_postscan_setup_bridge(struct pci_controller *hose,
pci_dev_t dev, int sub_bus);
extern void pciauto_config_init(struct pci_controller *hose);
extern int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev);
extern pci_dev_t pci_find_device (unsigned int vendor, unsigned int device, int index);
extern pci_dev_t pci_find_devices (struct pci_device_id *ids, int index);
extern pci_dev_t pci_find_class(int wanted_class, int wanted_sub_code,
int wanted_prog_if, int index);
extern int pci_hose_config_device(struct pci_controller *hose,
pci_dev_t dev,
unsigned long io,
pci_addr_t mem,
unsigned long command);
extern int pci_hose_find_capability(struct pci_controller *hose, pci_dev_t dev,
int cap);
extern int pci_hose_find_cap_start(struct pci_controller *hose, pci_dev_t dev,
u8 hdr_type);
extern int pci_find_cap(struct pci_controller *hose, pci_dev_t dev, int pos,
int cap);
#ifdef CONFIG_PCI_FIXUP_DEV
extern void board_pci_fixup_dev(struct pci_controller *hose, pci_dev_t dev,
unsigned short vendor,
unsigned short device,
unsigned short class);
#endif
const char * pci_class_str(u8 class);
int pci_last_busno(void);
#ifdef CONFIG_MPC824X
extern void pci_mpc824x_init (struct pci_controller *hose);
#endif
#ifdef CONFIG_MPC85xx
extern void pci_mpc85xx_init (struct pci_controller *hose);
#endif
#endif /* __ASSEMBLY__ */
#endif /* _PCI_H */
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