| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * (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. |
| */ |
| |
| #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_STD_HEADER_SIZEOF 64 |
| #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 */ |
| |
| /* Convert a regsister address (e.g. PCI_BASE_ADDRESS_1) to a bar # (e.g. 1) */ |
| #define pci_offset_to_barnum(offset) \ |
| (((offset) - PCI_BASE_ADDRESS_0) / sizeof(u32)) |
| |
| /* 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 */ |
| |
| /* 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_PCIX 0x07 /* PCI-X */ |
| #define PCI_CAP_ID_HT 0x08 /* HyperTransport */ |
| #define PCI_CAP_ID_VNDR 0x09 /* Vendor-Specific */ |
| #define PCI_CAP_ID_DBG 0x0A /* Debug port */ |
| #define PCI_CAP_ID_CCRC 0x0B /* CompactPCI Central Resource Control */ |
| #define PCI_CAP_ID_SHPC 0x0C /* PCI Standard Hot-Plug Controller */ |
| #define PCI_CAP_ID_SSVID 0x0D /* Bridge subsystem vendor/device ID */ |
| #define PCI_CAP_ID_AGP3 0x0E /* AGP Target PCI-PCI bridge */ |
| #define PCI_CAP_ID_SECDEV 0x0F /* Secure Device */ |
| #define PCI_CAP_ID_EXP 0x10 /* PCI Express */ |
| #define PCI_CAP_ID_MSIX 0x11 /* MSI-X */ |
| #define PCI_CAP_ID_SATA 0x12 /* SATA Data/Index Conf. */ |
| #define PCI_CAP_ID_AF 0x13 /* PCI Advanced Features */ |
| #define PCI_CAP_ID_EA 0x14 /* PCI Enhanced Allocation */ |
| #define PCI_CAP_ID_MAX PCI_CAP_ID_EA |
| #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_FLAGS_MASKBIT 0x0100 /* Per-vector masking capable */ |
| #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 */ |
| #define PCI_EXT_CAP_ID_DPC 0x1D /* Downstream Port Containment */ |
| #define PCI_EXT_CAP_ID_L1SS 0x1E /* L1 PM Substates */ |
| #define PCI_EXT_CAP_ID_PTM 0x1F /* Precision Time Measurement */ |
| #define PCI_EXT_CAP_ID_MAX PCI_EXT_CAP_ID_PTM |
| |
| /* Enhanced Allocation Registers */ |
| #define PCI_EA_NUM_ENT 2 /* Number of Capability Entries */ |
| #define PCI_EA_NUM_ENT_MASK 0x3f /* Num Entries Mask */ |
| #define PCI_EA_FIRST_ENT 4 /* First EA Entry in List */ |
| #define PCI_EA_ES 0x00000007 /* Entry Size */ |
| #define PCI_EA_BEI 0x000000f0 /* BAR Equivalent Indicator */ |
| /* Base, MaxOffset registers */ |
| /* bit 0 is reserved */ |
| #define PCI_EA_IS_64 0x00000002 /* 64-bit field flag */ |
| #define PCI_EA_FIELD_MASK 0xfffffffc /* For Base & Max Offset */ |
| |
| /* PCI Express capabilities */ |
| #define PCI_EXP_FLAGS 2 /* Capabilities register */ |
| #define PCI_EXP_FLAGS_TYPE 0x00f0 /* Device/Port type */ |
| #define PCI_EXP_TYPE_ROOT_PORT 0x4 /* Root Port */ |
| #define PCI_EXP_DEVCAP 4 /* Device capabilities */ |
| #define PCI_EXP_DEVCAP_FLR 0x10000000 /* Function Level Reset */ |
| #define PCI_EXP_DEVCTL 8 /* Device Control */ |
| #define PCI_EXP_DEVCTL_BCR_FLR 0x8000 /* Bridge Configuration Retry / FLR */ |
| #define PCI_EXP_LNKCAP 12 /* Link Capabilities */ |
| #define PCI_EXP_LNKCAP_SLS 0x0000000f /* Supported Link Speeds */ |
| #define PCI_EXP_LNKCAP_MLW 0x000003f0 /* Maximum Link Width */ |
| #define PCI_EXP_LNKCAP_DLLLARC 0x00100000 /* Data Link Layer Link Active Reporting Capable */ |
| #define PCI_EXP_LNKSTA 18 /* Link Status */ |
| #define PCI_EXP_LNKSTA_CLS 0x000f /* Current Link Speed */ |
| #define PCI_EXP_LNKSTA_CLS_2_5GB 0x0001 /* Current Link Speed 2.5GT/s */ |
| #define PCI_EXP_LNKSTA_CLS_5_0GB 0x0002 /* Current Link Speed 5.0GT/s */ |
| #define PCI_EXP_LNKSTA_CLS_8_0GB 0x0003 /* Current Link Speed 8.0GT/s */ |
| #define PCI_EXP_LNKSTA_NLW 0x03f0 /* Negotiated Link Width */ |
| #define PCI_EXP_LNKSTA_NLW_SHIFT 4 /* start of NLW mask in link status */ |
| #define PCI_EXP_LNKSTA_DLLLA 0x2000 /* Data Link Layer Link Active */ |
| #define PCI_EXP_SLTCAP 20 /* Slot Capabilities */ |
| #define PCI_EXP_SLTCAP_PSN 0xfff80000 /* Physical Slot Number */ |
| #define PCI_EXP_LNKCTL2 48 /* Link Control 2 */ |
| /* Single Root I/O Virtualization Registers */ |
| #define PCI_SRIOV_CAP 0x04 /* SR-IOV Capabilities */ |
| #define PCI_SRIOV_CTRL 0x08 /* SR-IOV Control */ |
| #define PCI_SRIOV_CTRL_VFE 0x01 /* VF Enable */ |
| #define PCI_SRIOV_CTRL_MSE 0x08 /* VF Memory Space Enable */ |
| #define PCI_SRIOV_INITIAL_VF 0x0c /* Initial VFs */ |
| #define PCI_SRIOV_TOTAL_VF 0x0e /* Total VFs */ |
| #define PCI_SRIOV_NUM_VF 0x10 /* Number of VFs */ |
| #define PCI_SRIOV_VF_OFFSET 0x14 /* First VF Offset */ |
| #define PCI_SRIOV_VF_STRIDE 0x16 /* Following VF Stride */ |
| #define PCI_SRIOV_VF_DID 0x1a /* VF Device ID */ |
| |
| /* Include the ID list */ |
| |
| #include <pci_ids.h> |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <dm/pci.h> |
| |
| #ifdef CONFIG_SYS_PCI_64BIT |
| typedef u64 pci_addr_t; |
| typedef u64 pci_size_t; |
| #else |
| typedef unsigned long pci_addr_t; |
| typedef unsigned long 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) |
| |
| /* |
| * Please note the difference in DEVFN usage in U-Boot vs Linux. U-Boot |
| * uses DEVFN in bits 15-8 but Linux instead expects DEVFN in bits 7-0. |
| * Please see the Linux header include/uapi/linux/pci.h for more details. |
| * This is relevant for the following macros: |
| * PCI_DEV, PCI_FUNC, PCI_DEVFN |
| * The U-Boot macro PCI_DEV is equivalent to the Linux PCI_SLOT version with |
| * the remark from above (input is in bits 15-8 instead of 7-0. |
| */ |
| #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) |
| |
| /* Convert from Linux format to U-Boot format */ |
| #define PCI_TO_BDF(val) ((val) << 8) |
| |
| 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 INDIRECT_TYPE_NO_PCIE_LINK 1 |
| |
| /** |
| * Structure of a PCI controller (host bridge) |
| * |
| * With driver model this is dev_get_uclass_priv(bus) |
| * |
| * @skip_auto_config_until_reloc: true to avoid auto-config until U-Boot has |
| * relocated. Normally if PCI is used before relocation, this happens |
| * before relocation also. Some platforms set up static configuration in |
| * TPL/SPL to reduce code size and boot time, since these phases only know |
| * about a small subset of PCI devices. This is normally false. |
| */ |
| struct pci_controller { |
| #ifdef CONFIG_DM_PCI |
| struct udevice *bus; |
| struct udevice *ctlr; |
| bool skip_auto_config_until_reloc; |
| #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; |
| 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; |
| |
| #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); |
| |
| /** |
| * pciauto_region_allocate() - Allocate resources from a PCI resource region |
| * |
| * Allocates @size bytes from the PCI resource @res. If @supports_64bit is |
| * false, the result will be guaranteed to fit in 32 bits. |
| * |
| * @res: PCI region to allocate from |
| * @size: Amount of bytes to allocate |
| * @bar: Returns the PCI bus address of the allocated resource |
| * @supports_64bit: Whether to allow allocations above the 32-bit boundary |
| * @return 0 if successful, -1 on failure |
| */ |
| int pciauto_region_allocate(struct pci_region *res, pci_size_t size, |
| pci_addr_t *bar, bool supports_64bit); |
| |
| #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_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 |
| |
| #ifdef CONFIG_PCIE_IMX |
| extern void imx_pcie_remove(void); |
| #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_platdata(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) |
| * @is_virtfn: True for Virtual Function device |
| * @pfdev: Handle to Physical Function device |
| * @virtid: Virtual Function Index |
| */ |
| struct pci_child_platdata { |
| int devfn; |
| unsigned short vendor; |
| unsigned short device; |
| unsigned int class; |
| |
| /* Variables for CONFIG_PCI_SRIOV */ |
| bool is_virtfn; |
| struct udevice *pfdev; |
| int virtid; |
| }; |
| |
| /* 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)(const 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(const 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(const 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(const 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(const struct udevice *dev, int offset, |
| unsigned long *valuep, enum pci_size_t size); |
| |
| int dm_pci_read_config8(const struct udevice *dev, int offset, u8 *valuep); |
| int dm_pci_read_config16(const struct udevice *dev, int offset, u16 *valuep); |
| int dm_pci_read_config32(const 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); |
| |
| /** |
| * pci_generic_mmap_write_config() - Generic helper for writing to |
| * memory-mapped PCI configuration space. |
| * @bus: Pointer to the PCI bus |
| * @addr_f: Callback for calculating the config space address |
| * @bdf: Identifies the PCI device to access |
| * @offset: The offset into the device's configuration space |
| * @value: The value to write |
| * @size: Indicates the size of access to perform |
| * |
| * Write the value @value of size @size from offset @offset within the |
| * configuration space of the device identified by the bus, device & function |
| * numbers in @bdf on the PCI bus @bus. The callback function @addr_f is |
| * responsible for calculating the CPU address of the respective configuration |
| * space offset. |
| * |
| * Return: 0 on success, else -EINVAL |
| */ |
| int pci_generic_mmap_write_config( |
| const struct udevice *bus, |
| int (*addr_f)(const struct udevice *bus, pci_dev_t bdf, uint offset, |
| void **addrp), |
| pci_dev_t bdf, |
| uint offset, |
| ulong value, |
| enum pci_size_t size); |
| |
| /** |
| * pci_generic_mmap_read_config() - Generic helper for reading from |
| * memory-mapped PCI configuration space. |
| * @bus: Pointer to the PCI bus |
| * @addr_f: Callback for calculating the config space address |
| * @bdf: Identifies the PCI device to access |
| * @offset: The offset into the device's configuration space |
| * @valuep: A pointer at which to store the read value |
| * @size: Indicates the size of access to perform |
| * |
| * Read a value of size @size from offset @offset within the configuration |
| * space of the device identified by the bus, device & function numbers in @bdf |
| * on the PCI bus @bus. The callback function @addr_f is responsible for |
| * calculating the CPU address of the respective configuration space offset. |
| * |
| * Return: 0 on success, else -EINVAL |
| */ |
| int pci_generic_mmap_read_config( |
| const struct udevice *bus, |
| int (*addr_f)(const struct udevice *bus, pci_dev_t bdf, uint offset, |
| void **addrp), |
| pci_dev_t bdf, |
| uint offset, |
| ulong *valuep, |
| enum pci_size_t size); |
| |
| #if defined(CONFIG_PCI_SRIOV) |
| /** |
| * pci_sriov_init() - Scan Virtual Function devices |
| * |
| * @pdev: Physical Function udevice handle |
| * @vf_en: Number of Virtual Function devices to enable |
| * @return 0 on success, -ve on error |
| */ |
| int pci_sriov_init(struct udevice *pdev, int vf_en); |
| |
| /** |
| * pci_sriov_get_totalvfs() - Get total available Virtual Function devices |
| * |
| * @pdev: Physical Function udevice handle |
| * @return count on success, -ve on error |
| */ |
| int pci_sriov_get_totalvfs(struct udevice *pdev); |
| #endif |
| |
| #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); |
| int |
| pci_get_dma_regions(struct udevice *dev, struct pci_region *memp, int index); |
| /** |
| * 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(const 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. |
| * Can be used for 32b BARs 0-5 on type 0 functions and for 32b BARs 0-1 on |
| * type 1 functions. |
| * Can also be used on type 0 functions that support Enhanced Allocation for |
| * 32b/64b BARs. Note that duplicate BEI entries are not supported. |
| * |
| * @dev: Device to check |
| * @bar: Bar register offset (PCI_BASE_ADDRESS_...) |
| * @flags: Flags for the region type (PCI_REGION_...) |
| * @return: pointer to the virtual address to use or 0 on error |
| */ |
| void *dm_pci_map_bar(struct udevice *dev, int bar, int flags); |
| |
| /** |
| * dm_pci_find_next_capability() - find a capability starting from an offset |
| * |
| * Tell if a device supports a given PCI capability. Returns the |
| * address of the requested capability structure within the device's |
| * PCI configuration space or 0 in case the device does not support it. |
| * |
| * Possible values for @cap: |
| * |
| * %PCI_CAP_ID_MSI Message Signalled Interrupts |
| * %PCI_CAP_ID_PCIX PCI-X |
| * %PCI_CAP_ID_EXP PCI Express |
| * %PCI_CAP_ID_MSIX MSI-X |
| * |
| * See PCI_CAP_ID_xxx for the complete capability ID codes. |
| * |
| * @dev: PCI device to query |
| * @start: offset to start from |
| * @cap: capability code |
| * @return: capability address or 0 if not supported |
| */ |
| int dm_pci_find_next_capability(struct udevice *dev, u8 start, int cap); |
| |
| /** |
| * dm_pci_find_capability() - find a capability |
| * |
| * Tell if a device supports a given PCI capability. Returns the |
| * address of the requested capability structure within the device's |
| * PCI configuration space or 0 in case the device does not support it. |
| * |
| * Possible values for @cap: |
| * |
| * %PCI_CAP_ID_MSI Message Signalled Interrupts |
| * %PCI_CAP_ID_PCIX PCI-X |
| * %PCI_CAP_ID_EXP PCI Express |
| * %PCI_CAP_ID_MSIX MSI-X |
| * |
| * See PCI_CAP_ID_xxx for the complete capability ID codes. |
| * |
| * @dev: PCI device to query |
| * @cap: capability code |
| * @return: capability address or 0 if not supported |
| */ |
| int dm_pci_find_capability(struct udevice *dev, int cap); |
| |
| /** |
| * dm_pci_find_next_ext_capability() - find an extended capability |
| * starting from an offset |
| * |
| * Tell if a device supports a given PCI express extended capability. |
| * Returns the address of the requested extended capability structure |
| * within the device's PCI configuration space or 0 in case the device |
| * does not support it. |
| * |
| * Possible values for @cap: |
| * |
| * %PCI_EXT_CAP_ID_ERR Advanced Error Reporting |
| * %PCI_EXT_CAP_ID_VC Virtual Channel |
| * %PCI_EXT_CAP_ID_DSN Device Serial Number |
| * %PCI_EXT_CAP_ID_PWR Power Budgeting |
| * |
| * See PCI_EXT_CAP_ID_xxx for the complete extended capability ID codes. |
| * |
| * @dev: PCI device to query |
| * @start: offset to start from |
| * @cap: extended capability code |
| * @return: extended capability address or 0 if not supported |
| */ |
| int dm_pci_find_next_ext_capability(struct udevice *dev, int start, int cap); |
| |
| /** |
| * dm_pci_find_ext_capability() - find an extended capability |
| * |
| * Tell if a device supports a given PCI express extended capability. |
| * Returns the address of the requested extended capability structure |
| * within the device's PCI configuration space or 0 in case the device |
| * does not support it. |
| * |
| * Possible values for @cap: |
| * |
| * %PCI_EXT_CAP_ID_ERR Advanced Error Reporting |
| * %PCI_EXT_CAP_ID_VC Virtual Channel |
| * %PCI_EXT_CAP_ID_DSN Device Serial Number |
| * %PCI_EXT_CAP_ID_PWR Power Budgeting |
| * |
| * See PCI_EXT_CAP_ID_xxx for the complete extended capability ID codes. |
| * |
| * @dev: PCI device to query |
| * @cap: extended capability code |
| * @return: extended capability address or 0 if not supported |
| */ |
| int dm_pci_find_ext_capability(struct udevice *dev, int cap); |
| |
| /** |
| * dm_pci_flr() - Perform FLR if the device suppoorts it |
| * |
| * @dev: PCI device to reset |
| * @return: 0 if OK, -ENOENT if FLR is not supported by dev |
| */ |
| int dm_pci_flr(struct udevice *dev); |
| |
| #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 pci_emul_uc_priv - holds info about an emulator device |
| * |
| * There is always at most one emulator per client |
| * |
| * @client: Client device if any, else NULL |
| */ |
| struct pci_emul_uc_priv { |
| struct udevice *client; |
| }; |
| |
| /** |
| * struct dm_pci_emul_ops - PCI device emulator operations |
| */ |
| struct dm_pci_emul_ops { |
| /** |
| * 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)(const 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()) |
| * @containerp: Returns container device if found |
| * @emulp: Returns emulated device if found |
| * @return 0 if found, -ENODEV if not found |
| */ |
| int sandbox_pci_get_emul(const struct udevice *bus, pci_dev_t find_devfn, |
| struct udevice **containerp, struct udevice **emulp); |
| |
| /** |
| * sandbox_pci_get_client() - Find the client for an emulation device |
| * |
| * @emul: Emulation device to check |
| * @devp: Returns the client device emulated by this device |
| * @return 0 if OK, -ENOENT if the device has no client yet |
| */ |
| int sandbox_pci_get_client(struct udevice *emul, struct udevice **devp); |
| |
| #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 */ |