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u-boot/include/pci.h
Stuart Yoder eeb5b1ad82 pci: make pci_get_hose_head() available to external users 
Put pci_get_hose_head() prototype in header so it is available to
external users, allowing them to find and iterate over all pci
controllers.

Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-03-21 12:42:12 -07:00

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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
#define PCI_CFG_SPACE_SIZE 256
#define PCI_CFG_SPACE_EXP_SIZE 4096
/*
* 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 */
#define PCI_INTERRUPT_LINE_DISABLE 0xff
/* 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
/* Extended Capabilities (PCI-X 2.0 and Express) */
#define PCI_EXT_CAP_ID(header) (header & 0x0000ffff)
#define PCI_EXT_CAP_VER(header) ((header >> 16) & 0xf)
#define PCI_EXT_CAP_NEXT(header) ((header >> 20) & 0xffc)
#define PCI_EXT_CAP_ID_ERR 0x01 /* Advanced Error Reporting */
#define PCI_EXT_CAP_ID_VC 0x02 /* Virtual Channel Capability */
#define PCI_EXT_CAP_ID_DSN 0x03 /* Device Serial Number */
#define PCI_EXT_CAP_ID_PWR 0x04 /* Power Budgeting */
#define PCI_EXT_CAP_ID_RCLD 0x05 /* Root Complex Link Declaration */
#define PCI_EXT_CAP_ID_RCILC 0x06 /* Root Complex Internal Link Control */
#define PCI_EXT_CAP_ID_RCEC 0x07 /* Root Complex Event Collector */
#define PCI_EXT_CAP_ID_MFVC 0x08 /* Multi-Function VC Capability */
#define PCI_EXT_CAP_ID_VC9 0x09 /* same as _VC */
#define PCI_EXT_CAP_ID_RCRB 0x0A /* Root Complex RB? */
#define PCI_EXT_CAP_ID_VNDR 0x0B /* Vendor-Specific */
#define PCI_EXT_CAP_ID_CAC 0x0C /* Config Access - obsolete */
#define PCI_EXT_CAP_ID_ACS 0x0D /* Access Control Services */
#define PCI_EXT_CAP_ID_ARI 0x0E /* Alternate Routing ID */
#define PCI_EXT_CAP_ID_ATS 0x0F /* Address Translation Services */
#define PCI_EXT_CAP_ID_SRIOV 0x10 /* Single Root I/O Virtualization */
#define PCI_EXT_CAP_ID_MRIOV 0x11 /* Multi Root I/O Virtualization */
#define PCI_EXT_CAP_ID_MCAST 0x12 /* Multicast */
#define PCI_EXT_CAP_ID_PRI 0x13 /* Page Request Interface */
#define PCI_EXT_CAP_ID_AMD_XXX 0x14 /* Reserved for AMD */
#define PCI_EXT_CAP_ID_REBAR 0x15 /* Resizable BAR */
#define PCI_EXT_CAP_ID_DPA 0x16 /* Dynamic Power Allocation */
#define PCI_EXT_CAP_ID_TPH 0x17 /* TPH Requester */
#define PCI_EXT_CAP_ID_LTR 0x18 /* Latency Tolerance Reporting */
#define PCI_EXT_CAP_ID_SECPCI 0x19 /* Secondary PCIe Capability */
#define PCI_EXT_CAP_ID_PMUX 0x1A /* Protocol Multiplexing */
#define PCI_EXT_CAP_ID_PASID 0x1B /* Process Address Space ID */
/* 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_DEVFN(d, f) ((d) << 11 | (f) << 8)
#define PCI_MASK_BUS(bdf) ((bdf) & 0xffff)
#define PCI_ADD_BUS(bus, devfn) (((bus) << 16) | (devfn))
#define PCI_BDF(b, d, f) ((b) << 16 | PCI_DEVFN(d, f))
#define PCI_VENDEV(v, d) (((v) << 16) | (d))
#define PCI_ANY_ID (~0)
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_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)
*
* With driver model this is dev_get_uclass_priv(bus)
*/
struct pci_controller {
#ifdef CONFIG_DM_PCI
struct udevice *bus;
struct udevice *ctlr;
#else
struct pci_controller *next;
#endif
int first_busno;
int last_busno;
volatile unsigned int *cfg_addr;
volatile unsigned char *cfg_data;
int indirect_type;
/*
* TODO(sjg@chromium.org): With driver model we use struct
* pci_controller for both the controller and any bridge devices
* attached to it. But there is only one region list and it is in the
* top-level controller.
*
* This could be changed so that struct pci_controller is only used
* for PCI controllers and a separate UCLASS (or perhaps
* UCLASS_PCI_GENERIC) is used for bridges.
*/
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);
#ifndef CONFIG_DM_PCI
/* 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);
#endif
/* Used by auto config */
struct pci_region *pci_mem, *pci_io, *pci_prefetch;
/* Used by ppc405 autoconfig*/
struct pci_region *pci_fb;
#ifndef CONFIG_DM_PCI
int current_busno;
void *priv_data;
#endif
};
#ifndef CONFIG_DM_PCI
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;
}
#endif
#ifdef CONFIG_PCI_INDIRECT_BRIDGE
extern void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data);
#endif
#if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT)
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))
/* For driver model these are defined in macros in pci_compat.c */
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);
#endif
#ifndef CONFIG_DM_PCI
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);
#endif
void pciauto_region_init(struct pci_region *res);
void pciauto_region_align(struct pci_region *res, pci_size_t size);
void pciauto_config_init(struct pci_controller *hose);
int pciauto_region_allocate(struct pci_region *res, pci_size_t size,
pci_addr_t *bar);
#if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT)
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 struct pci_controller *pci_get_hose_head(void);
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_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 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);
pci_dev_t pci_find_class(unsigned int find_class, 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);
int pci_find_next_ext_capability(struct pci_controller *hose,
pci_dev_t dev, int start, int cap);
int pci_hose_find_ext_capability(struct pci_controller *hose,
pci_dev_t dev, 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
#endif /* !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT) */
const char * pci_class_str(u8 class);
int pci_last_busno(void);
#ifdef CONFIG_MPC85xx
extern void pci_mpc85xx_init (struct pci_controller *hose);
#endif
#if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT)
/**
* pci_write_bar32() - Write the address of a BAR including control bits
*
* This writes a raw address (with control bits) to a bar. This can be used
* with devices which require hard-coded addresses, not part of the normal
* PCI enumeration process.
*
* @hose: PCI hose to use
* @dev: PCI device to update
* @barnum: BAR number (0-5)
* @addr: BAR address with control bits
*/
void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum,
u32 addr);
/**
* pci_read_bar32() - read the address of a bar
*
* @hose: PCI hose to use
* @dev: PCI device to inspect
* @barnum: BAR number (0-5)
* @return address of the bar, masking out any control bits
* */
u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum);
/**
* pci_hose_find_devices() - Find devices by vendor/device ID
*
* @hose: PCI hose to search
* @busnum: Bus number to search
* @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record
* @indexp: Pointer to device index to find. To find the first matching
* device, pass 0; to find the second, pass 1, etc. This
* parameter is decremented for each non-matching device so
* can be called repeatedly.
*/
pci_dev_t pci_hose_find_devices(struct pci_controller *hose, int busnum,
struct pci_device_id *ids, int *indexp);
#endif /* !CONFIG_DM_PCI || CONFIG_DM_PCI_COMPAT */
/* Access sizes for PCI reads and writes */
enum pci_size_t {
PCI_SIZE_8,
PCI_SIZE_16,
PCI_SIZE_32,
};
struct udevice;
#ifdef CONFIG_DM_PCI
/**
* struct pci_child_platdata - information stored about each PCI device
*
* Every device on a PCI bus has this per-child data.
*
* It can be accessed using dev_get_parent_priv(dev) if dev->parent is a
* PCI bus (i.e. UCLASS_PCI)
*
* @devfn: Encoded device and function index - see PCI_DEVFN()
* @vendor: PCI vendor ID (see pci_ids.h)
* @device: PCI device ID (see pci_ids.h)
* @class: PCI class, 3 bytes: (base, sub, prog-if)
*/
struct pci_child_platdata {
int devfn;
unsigned short vendor;
unsigned short device;
unsigned int class;
};
/* PCI bus operations */
struct dm_pci_ops {
/**
* read_config() - Read a PCI configuration value
*
* PCI buses must support reading and writing configuration values
* so that the bus can be scanned and its devices configured.
*
* Normally PCI_BUS(@bdf) is the same as @bus->seq, but not always.
* If bridges exist it is possible to use the top-level bus to
* access a sub-bus. In that case @bus will be the top-level bus
* and PCI_BUS(bdf) will be a different (higher) value
*
* @bus: Bus to read from
* @bdf: Bus, device and function to read
* @offset: Byte offset within the device's configuration space
* @valuep: Place to put the returned value
* @size: Access size
* @return 0 if OK, -ve on error
*/
int (*read_config)(struct udevice *bus, pci_dev_t bdf, uint offset,
ulong *valuep, enum pci_size_t size);
/**
* write_config() - Write a PCI configuration value
*
* @bus: Bus to write to
* @bdf: Bus, device and function to write
* @offset: Byte offset within the device's configuration space
* @value: Value to write
* @size: Access size
* @return 0 if OK, -ve on error
*/
int (*write_config)(struct udevice *bus, pci_dev_t bdf, uint offset,
ulong value, enum pci_size_t size);
};
/* Get access to a PCI bus' operations */
#define pci_get_ops(dev) ((struct dm_pci_ops *)(dev)->driver->ops)
/**
* dm_pci_get_bdf() - Get the BDF value for a device
*
* @dev: Device to check
* @return bus/device/function value (see PCI_BDF())
*/
pci_dev_t dm_pci_get_bdf(struct udevice *dev);
/**
* pci_bind_bus_devices() - scan a PCI bus and bind devices
*
* Scan a PCI bus looking for devices. Bind each one that is found. If
* devices are already bound that match the scanned devices, just update the
* child data so that the device can be used correctly (this happens when
* the device tree describes devices we expect to see on the bus).
*
* Devices that are bound in this way will use a generic PCI driver which
* does nothing. The device can still be accessed but will not provide any
* driver interface.
*
* @bus: Bus containing devices to bind
* @return 0 if OK, -ve on error
*/
int pci_bind_bus_devices(struct udevice *bus);
/**
* pci_auto_config_devices() - configure bus devices ready for use
*
* This works through all devices on a bus by scanning the driver model
* data structures (normally these have been set up by pci_bind_bus_devices()
* earlier).
*
* Space is allocated for each PCI base address register (BAR) so that the
* devices are mapped into memory and I/O space ready for use.
*
* @bus: Bus containing devices to bind
* @return 0 if OK, -ve on error
*/
int pci_auto_config_devices(struct udevice *bus);
/**
* dm_pci_bus_find_bdf() - Find a device given its PCI bus address
*
* @bdf: PCI device address: bus, device and function -see PCI_BDF()
* @devp: Returns the device for this address, if found
* @return 0 if OK, -ENODEV if not found
*/
int dm_pci_bus_find_bdf(pci_dev_t bdf, struct udevice **devp);
/**
* pci_bus_find_devfn() - Find a device on a bus
*
* @find_devfn: PCI device address (device and function only)
* @devp: Returns the device for this address, if found
* @return 0 if OK, -ENODEV if not found
*/
int pci_bus_find_devfn(struct udevice *bus, pci_dev_t find_devfn,
struct udevice **devp);
/**
* pci_find_first_device() - return the first available PCI device
*
* This function and pci_find_first_device() allow iteration through all
* available PCI devices on all buses. Assuming there are any, this will
* return the first one.
*
* @devp: Set to the first available device, or NULL if no more are left
* or we got an error
* @return 0 if all is OK, -ve on error (e.g. a bus/bridge failed to probe)
*/
int pci_find_first_device(struct udevice **devp);
/**
* pci_find_next_device() - return the next available PCI device
*
* Finds the next available PCI device after the one supplied, or sets @devp
* to NULL if there are no more.
*
* @devp: On entry, the last device returned. Set to the next available
* device, or NULL if no more are left or we got an error
* @return 0 if all is OK, -ve on error (e.g. a bus/bridge failed to probe)
*/
int pci_find_next_device(struct udevice **devp);
/**
* pci_get_ff() - Returns a mask for the given access size
*
* @size: Access size
* @return 0xff for PCI_SIZE_8, 0xffff for PCI_SIZE_16, 0xffffffff for
* PCI_SIZE_32
*/
int pci_get_ff(enum pci_size_t size);
/**
* pci_bus_find_devices () - Find devices on a bus
*
* @bus: Bus to search
* @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record
* @indexp: Pointer to device index to find. To find the first matching
* device, pass 0; to find the second, pass 1, etc. This
* parameter is decremented for each non-matching device so
* can be called repeatedly.
* @devp: Returns matching device if found
* @return 0 if found, -ENODEV if not
*/
int pci_bus_find_devices(struct udevice *bus, struct pci_device_id *ids,
int *indexp, struct udevice **devp);
/**
* pci_find_device_id() - Find a device on any bus
*
* @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record
* @index: Index number of device to find, 0 for the first match, 1 for
* the second, etc.
* @devp: Returns matching device if found
* @return 0 if found, -ENODEV if not
*/
int pci_find_device_id(struct pci_device_id *ids, int index,
struct udevice **devp);
/**
* dm_pci_hose_probe_bus() - probe a subordinate bus, scanning it for devices
*
* This probes the given bus which causes it to be scanned for devices. The
* devices will be bound but not probed.
*
* @hose specifies the PCI hose that will be used for the scan. This is
* always a top-level bus with uclass UCLASS_PCI. The bus to scan is
* in @bdf, and is a subordinate bus reachable from @hose.
*
* @hose: PCI hose to scan
* @bdf: PCI bus address to scan (PCI_BUS(bdf) is the bus number)
* @return 0 if OK, -ve on error
*/
int dm_pci_hose_probe_bus(struct udevice *bus);
/**
* pci_bus_read_config() - Read a configuration value from a device
*
* TODO(sjg@chromium.org): We should be able to pass just a device and have
* it do the right thing. It would be good to have that function also.
*
* @bus: Bus to read from
* @bdf: PCI device address: bus, device and function -see PCI_BDF()
* @offset: Register offset to read
* @valuep: Place to put the returned value
* @size: Access size
* @return 0 if OK, -ve on error
*/
int pci_bus_read_config(struct udevice *bus, pci_dev_t bdf, int offset,
unsigned long *valuep, enum pci_size_t size);
/**
* pci_bus_write_config() - Write a configuration value to a device
*
* @bus: Bus to write from
* @bdf: PCI device address: bus, device and function -see PCI_BDF()
* @offset: Register offset to write
* @value: Value to write
* @size: Access size
* @return 0 if OK, -ve on error
*/
int pci_bus_write_config(struct udevice *bus, pci_dev_t bdf, int offset,
unsigned long value, enum pci_size_t size);
/**
* pci_bus_clrset_config32() - Update a configuration value for a device
*
* The register at @offset is updated to (oldvalue & ~clr) | set.
*
* @bus: Bus to access
* @bdf: PCI device address: bus, device and function -see PCI_BDF()
* @offset: Register offset to update
* @clr: Bits to clear
* @set: Bits to set
* @return 0 if OK, -ve on error
*/
int pci_bus_clrset_config32(struct udevice *bus, pci_dev_t bdf, int offset,
u32 clr, u32 set);
/**
* Driver model PCI config access functions. Use these in preference to others
* when you have a valid device
*/
int dm_pci_read_config(struct udevice *dev, int offset, unsigned long *valuep,
enum pci_size_t size);
int dm_pci_read_config8(struct udevice *dev, int offset, u8 *valuep);
int dm_pci_read_config16(struct udevice *dev, int offset, u16 *valuep);
int dm_pci_read_config32(struct udevice *dev, int offset, u32 *valuep);
int dm_pci_write_config(struct udevice *dev, int offset, unsigned long value,
enum pci_size_t size);
int dm_pci_write_config8(struct udevice *dev, int offset, u8 value);
int dm_pci_write_config16(struct udevice *dev, int offset, u16 value);
int dm_pci_write_config32(struct udevice *dev, int offset, u32 value);
/**
* These permit convenient read/modify/write on PCI configuration. The
* register is updated to (oldvalue & ~clr) | set.
*/
int dm_pci_clrset_config8(struct udevice *dev, int offset, u32 clr, u32 set);
int dm_pci_clrset_config16(struct udevice *dev, int offset, u32 clr, u32 set);
int dm_pci_clrset_config32(struct udevice *dev, int offset, u32 clr, u32 set);
/*
* The following functions provide access to the above without needing the
* size parameter. We are trying to encourage the use of the 8/16/32-style
* functions, rather than byte/word/dword. But both are supported.
*/
int pci_write_config32(pci_dev_t pcidev, int offset, u32 value);
int pci_write_config16(pci_dev_t pcidev, int offset, u16 value);
int pci_write_config8(pci_dev_t pcidev, int offset, u8 value);
int pci_read_config32(pci_dev_t pcidev, int offset, u32 *valuep);
int pci_read_config16(pci_dev_t pcidev, int offset, u16 *valuep);
int pci_read_config8(pci_dev_t pcidev, int offset, u8 *valuep);
#ifdef CONFIG_DM_PCI_COMPAT
/* Compatibility with old naming */
static inline int pci_write_config_dword(pci_dev_t pcidev, int offset,
u32 value)
{
return pci_write_config32(pcidev, offset, value);
}
/* Compatibility with old naming */
static inline int pci_write_config_word(pci_dev_t pcidev, int offset,
u16 value)
{
return pci_write_config16(pcidev, offset, value);
}
/* Compatibility with old naming */
static inline int pci_write_config_byte(pci_dev_t pcidev, int offset,
u8 value)
{
return pci_write_config8(pcidev, offset, value);
}
/* Compatibility with old naming */
static inline int pci_read_config_dword(pci_dev_t pcidev, int offset,
u32 *valuep)
{
return pci_read_config32(pcidev, offset, valuep);
}
/* Compatibility with old naming */
static inline int pci_read_config_word(pci_dev_t pcidev, int offset,
u16 *valuep)
{
return pci_read_config16(pcidev, offset, valuep);
}
/* Compatibility with old naming */
static inline int pci_read_config_byte(pci_dev_t pcidev, int offset,
u8 *valuep)
{
return pci_read_config8(pcidev, offset, valuep);
}
#endif /* CONFIG_DM_PCI_COMPAT */
/**
* dm_pciauto_config_device() - configure a device ready for use
*
* Space is allocated for each PCI base address register (BAR) so that the
* devices are mapped into memory and I/O space ready for use.
*
* @dev: Device to configure
* @return 0 if OK, -ve on error
*/
int dm_pciauto_config_device(struct udevice *dev);
/**
* pci_conv_32_to_size() - convert a 32-bit read value to the given size
*
* Some PCI buses must always perform 32-bit reads. The data must then be
* shifted and masked to reflect the required access size and offset. This
* function performs this transformation.
*
* @value: Value to transform (32-bit value read from @offset & ~3)
* @offset: Register offset that was read
* @size: Required size of the result
* @return the value that would have been obtained if the read had been
* performed at the given offset with the correct size
*/
ulong pci_conv_32_to_size(ulong value, uint offset, enum pci_size_t size);
/**
* pci_conv_size_to_32() - update a 32-bit value to prepare for a write
*
* Some PCI buses must always perform 32-bit writes. To emulate a smaller
* write the old 32-bit data must be read, updated with the required new data
* and written back as a 32-bit value. This function performs the
* transformation from the old value to the new value.
*
* @value: Value to transform (32-bit value read from @offset & ~3)
* @offset: Register offset that should be written
* @size: Required size of the write
* @return the value that should be written as a 32-bit access to @offset & ~3.
*/
ulong pci_conv_size_to_32(ulong old, ulong value, uint offset,
enum pci_size_t size);
/**
* pci_get_controller() - obtain the controller to use for a bus
*
* @dev: Device to check
* @return pointer to the controller device for this bus
*/
struct udevice *pci_get_controller(struct udevice *dev);
/**
* pci_get_regions() - obtain pointers to all the region types
*
* @dev: Device to check
* @iop: Returns a pointer to the I/O region, or NULL if none
* @memp: Returns a pointer to the memory region, or NULL if none
* @prefp: Returns a pointer to the pre-fetch region, or NULL if none
* @return the number of non-NULL regions returned, normally 3
*/
int pci_get_regions(struct udevice *dev, struct pci_region **iop,
struct pci_region **memp, struct pci_region **prefp);
/**
* dm_pci_write_bar32() - Write the address of a BAR
*
* This writes a raw address to a bar
*
* @dev: PCI device to update
* @barnum: BAR number (0-5)
* @addr: BAR address
*/
void dm_pci_write_bar32(struct udevice *dev, int barnum, u32 addr);
/**
* dm_pci_read_bar32() - read a base address register from a device
*
* @dev: Device to check
* @barnum: Bar number to read (numbered from 0)
* @return: value of BAR
*/
u32 dm_pci_read_bar32(struct udevice *dev, int barnum);
/**
* dm_pci_bus_to_phys() - convert a PCI bus address to a physical address
*
* @dev: Device containing the PCI address
* @addr: PCI address to convert
* @flags: Flags for the region type (PCI_REGION_...)
* @return physical address corresponding to that PCI bus address
*/
phys_addr_t dm_pci_bus_to_phys(struct udevice *dev, pci_addr_t addr,
unsigned long flags);
/**
* dm_pci_phys_to_bus() - convert a physical address to a PCI bus address
*
* @dev: Device containing the bus address
* @addr: Physical address to convert
* @flags: Flags for the region type (PCI_REGION_...)
* @return PCI bus address corresponding to that physical address
*/
pci_addr_t dm_pci_phys_to_bus(struct udevice *dev, phys_addr_t addr,
unsigned long flags);
/**
* dm_pci_map_bar() - get a virtual address associated with a BAR region
*
* Looks up a base address register and finds the physical memory address
* that corresponds to it
*
* @dev: Device to check
* @bar: Bar number to read (numbered from 0)
* @flags: Flags for the region type (PCI_REGION_...)
* @return: pointer to the virtual address to use
*/
void *dm_pci_map_bar(struct udevice *dev, int bar, int flags);
#define dm_pci_virt_to_bus(dev, addr, flags) \
dm_pci_phys_to_bus(dev, (virt_to_phys(addr)), (flags))
#define dm_pci_bus_to_virt(dev, addr, flags, len, map_flags) \
map_physmem(dm_pci_bus_to_phys(dev, (addr), (flags)), \
(len), (map_flags))
#define dm_pci_phys_to_mem(dev, addr) \
dm_pci_phys_to_bus((dev), (addr), PCI_REGION_MEM)
#define dm_pci_mem_to_phys(dev, addr) \
dm_pci_bus_to_phys((dev), (addr), PCI_REGION_MEM)
#define dm_pci_phys_to_io(dev, addr) \
dm_pci_phys_to_bus((dev), (addr), PCI_REGION_IO)
#define dm_pci_io_to_phys(dev, addr) \
dm_pci_bus_to_phys((dev), (addr), PCI_REGION_IO)
#define dm_pci_virt_to_mem(dev, addr) \
dm_pci_virt_to_bus((dev), (addr), PCI_REGION_MEM)
#define dm_pci_mem_to_virt(dev, addr, len, map_flags) \
dm_pci_bus_to_virt((dev), (addr), PCI_REGION_MEM, (len), (map_flags))
#define dm_pci_virt_to_io(dev, addr) \
dm_pci_virt_to_bus((dev), (addr), PCI_REGION_IO)
#define dm_pci_io_to_virt(dev, addr, len, map_flags) \
dm_pci_bus_to_virt((dev), (addr), PCI_REGION_IO, (len), (map_flags))
/**
* dm_pci_find_device() - find a device by vendor/device ID
*
* @vendor: Vendor ID
* @device: Device ID
* @index: 0 to find the first match, 1 for second, etc.
* @devp: Returns pointer to the device, if found
* @return 0 if found, -ve on error
*/
int dm_pci_find_device(unsigned int vendor, unsigned int device, int index,
struct udevice **devp);
/**
* dm_pci_find_class() - find a device by class
*
* @find_class: 3-byte (24-bit) class value to find
* @index: 0 to find the first match, 1 for second, etc.
* @devp: Returns pointer to the device, if found
* @return 0 if found, -ve on error
*/
int dm_pci_find_class(uint find_class, int index, struct udevice **devp);
/**
* struct dm_pci_emul_ops - PCI device emulator operations
*/
struct dm_pci_emul_ops {
/**
* get_devfn(): Check which device and function this emulators
*
* @dev: device to check
* @return the device and function this emulates, or -ve on error
*/
int (*get_devfn)(struct udevice *dev);
/**
* read_config() - Read a PCI configuration value
*
* @dev: Emulated device to read from
* @offset: Byte offset within the device's configuration space
* @valuep: Place to put the returned value
* @size: Access size
* @return 0 if OK, -ve on error
*/
int (*read_config)(struct udevice *dev, uint offset, ulong *valuep,
enum pci_size_t size);
/**
* write_config() - Write a PCI configuration value
*
* @dev: Emulated device to write to
* @offset: Byte offset within the device's configuration space
* @value: Value to write
* @size: Access size
* @return 0 if OK, -ve on error
*/
int (*write_config)(struct udevice *dev, uint offset, ulong value,
enum pci_size_t size);
/**
* read_io() - Read a PCI I/O value
*
* @dev: Emulated device to read from
* @addr: I/O address to read
* @valuep: Place to put the returned value
* @size: Access size
* @return 0 if OK, -ENOENT if @addr is not mapped by this device,
* other -ve value on error
*/
int (*read_io)(struct udevice *dev, unsigned int addr, ulong *valuep,
enum pci_size_t size);
/**
* write_io() - Write a PCI I/O value
*
* @dev: Emulated device to write from
* @addr: I/O address to write
* @value: Value to write
* @size: Access size
* @return 0 if OK, -ENOENT if @addr is not mapped by this device,
* other -ve value on error
*/
int (*write_io)(struct udevice *dev, unsigned int addr,
ulong value, enum pci_size_t size);
/**
* map_physmem() - Map a device into sandbox memory
*
* @dev: Emulated device to map
* @addr: Memory address, normally corresponding to a PCI BAR.
* The device should have been configured to have a BAR
* at this address.
* @lenp: On entry, the size of the area to map, On exit it is
* updated to the size actually mapped, which may be less
* if the device has less space
* @ptrp: Returns a pointer to the mapped address. The device's
* space can be accessed as @lenp bytes starting here
* @return 0 if OK, -ENOENT if @addr is not mapped by this device,
* other -ve value on error
*/
int (*map_physmem)(struct udevice *dev, phys_addr_t addr,
unsigned long *lenp, void **ptrp);
/**
* unmap_physmem() - undo a memory mapping
*
* This must be called after map_physmem() to undo the mapping.
* Some devices can use this to check what has been written into
* their mapped memory and perform an operations they require on it.
* In this way, map/unmap can be used as a sort of handshake between
* the emulated device and its users.
*
* @dev: Emuated device to unmap
* @vaddr: Mapped memory address, as passed to map_physmem()
* @len: Size of area mapped, as returned by map_physmem()
* @return 0 if OK, -ve on error
*/
int (*unmap_physmem)(struct udevice *dev, const void *vaddr,
unsigned long len);
};
/* Get access to a PCI device emulator's operations */
#define pci_get_emul_ops(dev) ((struct dm_pci_emul_ops *)(dev)->driver->ops)
/**
* sandbox_pci_get_emul() - Get the emulation device for a PCI device
*
* Searches for a suitable emulator for the given PCI bus device
*
* @bus: PCI bus to search
* @find_devfn: PCI device and function address (PCI_DEVFN())
* @emulp: Returns emulated device if found
* @return 0 if found, -ENODEV if not found
*/
int sandbox_pci_get_emul(struct udevice *bus, pci_dev_t find_devfn,
struct udevice **emulp);
#endif /* CONFIG_DM_PCI */
/**
* 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
/**
* struct pci_driver_entry - Matches a driver to its pci_device_id list
* @driver: Driver to use
* @match: List of match records for this driver, terminated by {}
*/
struct pci_driver_entry {
struct driver *driver;
const struct pci_device_id *match;
};
#define U_BOOT_PCI_DEVICE(__name, __match) \
ll_entry_declare(struct pci_driver_entry, __name, pci_driver_entry) = {\
.driver = llsym(struct driver, __name, driver), \
.match = __match, \
}
#endif /* __ASSEMBLY__ */
#endif /* _PCI_H */
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