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Diffstat (limited to 'src/include/ipxe/pci.h')
| -rw-r--r-- | src/include/ipxe/pci.h | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/src/include/ipxe/pci.h b/src/include/ipxe/pci.h new file mode 100644 index 000000000..60ac8bf7c --- /dev/null +++ b/src/include/ipxe/pci.h @@ -0,0 +1,402 @@ +#ifndef _IPXE_PCI_H +#define _IPXE_PCI_H + +/* + * Support for NE2000 PCI clones added David Monro June 1997 + * Generalised for other PCI NICs by Ken Yap July 1997 + * PCI support rewritten by Michael Brown 2006 + * + * Most of this is taken from /usr/src/linux/include/linux/pci.h. + */ + +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2, or (at + * your option) any later version. + */ + +FILE_LICENCE ( GPL2_ONLY ); + +#include <stdint.h> +#include <ipxe/device.h> +#include <ipxe/tables.h> +#include <ipxe/pci_io.h> +#include "pci_ids.h" + +/* + * PCI constants + * + */ + +#define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */ +#define PCI_COMMAND_MEM 0x2 /* Enable response in mem space */ +#define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */ + +#define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */ +#define PCI_LATENCY_TIMER 0x0d /* 8 bits */ + +#define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */ +#define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */ +#define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */ +#define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */ +#define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */ +#define PCI_COMMAND_SERR 0x100 /* Enable SERR */ +#define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */ +#define PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */ + + +#define PCI_VENDOR_ID 0x00 /* 16 bits */ +#define PCI_DEVICE_ID 0x02 /* 16 bits */ +#define PCI_COMMAND 0x04 /* 16 bits */ + +#define PCI_STATUS 0x06 /* 16 bits */ +#define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */ +#define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */ +#define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */ +#define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */ +#define PCI_STATUS_PARITY 0x100 /* Detected parity error */ +#define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */ +#define PCI_STATUS_DEVSEL_FAST 0x000 +#define PCI_STATUS_DEVSEL_MEDIUM 0x200 +#define PCI_STATUS_DEVSEL_SLOW 0x400 +#define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */ +#define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */ +#define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */ +#define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */ +#define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */ + +#define PCI_REVISION 0x08 /* 8 bits */ +#define PCI_REVISION_ID 0x08 /* 8 bits */ +#define PCI_CLASS_REVISION 0x08 /* 32 bits */ +#define PCI_CLASS_CODE 0x0b /* 8 bits */ +#define PCI_SUBCLASS_CODE 0x0a /* 8 bits */ +#define PCI_HEADER_TYPE 0x0e /* 8 bits */ +#define PCI_HEADER_TYPE_NORMAL 0 +#define PCI_HEADER_TYPE_BRIDGE 1 +#define PCI_HEADER_TYPE_CARDBUS 2 + + +/* Header type 0 (normal devices) */ +#define PCI_CARDBUS_CIS 0x28 +#define PCI_SUBSYSTEM_VENDOR_ID 0x2c +#define PCI_SUBSYSTEM_ID 0x2e + +#define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */ +#define PCI_BASE_ADDRESS_1 0x14 /* 32 bits */ +#define PCI_BASE_ADDRESS_2 0x18 /* 32 bits */ +#define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */ +#define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */ +#define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */ + +#define PCI_BASE_ADDRESS_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_MASK (~0x0f) +#define PCI_BASE_ADDRESS_IO_MASK (~0x03) +#define PCI_ROM_ADDRESS 0x30 /* 32 bits */ +#define PCI_ROM_ADDRESS_ENABLE 0x01 /* Write 1 to enable ROM, + bits 31..11 are address, + 10..2 are reserved */ + +#define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */ + +#define PCI_INTERRUPT_LINE 0x3c /* IRQ number (0-15) */ +#define PCI_INTERRUPT_PIN 0x3d /* IRQ pin on PCI bus (A-D) */ + +/* Header type 1 (PCI-to-PCI bridges) */ +#define PCI_PRIMARY_BUS 0x18 /* Primary bus number */ +#define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */ +#define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */ +#define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */ +#define PCI_IO_BASE 0x1c /* I/O range behind the bridge */ +#define PCI_IO_LIMIT 0x1d +#define PCI_IO_RANGE_TYPE_MASK 0x0f /* I/O bridging type */ +#define PCI_IO_RANGE_TYPE_16 0x00 +#define PCI_IO_RANGE_TYPE_32 0x01 +#define PCI_IO_RANGE_MASK ~0x0f +#define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */ +#define PCI_MEMORY_BASE 0x20 /* Memory range behind */ +#define PCI_MEMORY_LIMIT 0x22 +#define PCI_MEMORY_RANGE_TYPE_MASK 0x0f +#define PCI_MEMORY_RANGE_MASK ~0x0f +#define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */ +#define PCI_PREF_MEMORY_LIMIT 0x26 +#define PCI_PREF_RANGE_TYPE_MASK 0x0f +#define PCI_PREF_RANGE_TYPE_32 0x00 +#define PCI_PREF_RANGE_TYPE_64 0x01 +#define PCI_PREF_RANGE_MASK ~0x0f +#define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */ +#define PCI_PREF_LIMIT_UPPER32 0x2c +#define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */ +#define PCI_IO_LIMIT_UPPER16 0x32 +/* 0x34 same as for htype 0 */ +/* 0x35-0x3b is reserved */ +#define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */ +/* 0x3c-0x3d are same as for htype 0 */ +#define PCI_BRIDGE_CONTROL 0x3e +#define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */ +#define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */ +#define PCI_BRIDGE_CTL_NO_ISA 0x04 /* Disable bridging of ISA ports */ +#define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */ +#define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */ +#define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */ +#define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */ + +#define PCI_CB_CAPABILITY_LIST 0x14 + +/* Capability lists */ + +#define PCI_CAP_LIST_ID 0 /* Capability ID */ +#define PCI_CAP_ID_PM 0x01 /* Power Management */ +#define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */ +#define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */ +#define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */ +#define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */ +#define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */ +#define PCI_CAP_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_PMC 2 /* PM Capabilities Register */ +#define PCI_PM_CAP_VER_MASK 0x0007 /* Version */ +#define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */ +#define PCI_PM_CAP_RESERVED 0x0010 /* Reserved field */ +#define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */ +#define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxilliary power support mask */ +#define PCI_PM_CAP_D1 0x0200 /* D1 power state support */ +#define PCI_PM_CAP_D2 0x0400 /* D2 power state support */ +#define PCI_PM_CAP_PME 0x0800 /* PME pin supported */ +#define PCI_PM_CAP_PME_MASK 0xF800 /* PME Mask of all supported states */ +#define PCI_PM_CAP_PME_D0 0x0800 /* PME# from D0 */ +#define PCI_PM_CAP_PME_D1 0x1000 /* PME# from D1 */ +#define PCI_PM_CAP_PME_D2 0x2000 /* PME# from D2 */ +#define PCI_PM_CAP_PME_D3 0x4000 /* PME# from D3 (hot) */ +#define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */ +#define PCI_PM_CTRL 4 /* PM control and status register */ +#define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */ +#define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */ +#define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */ +#define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */ +#define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */ +#define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */ +#define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */ +#define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */ +#define PCI_PM_DATA_REGISTER 7 /* (??) */ +#define PCI_PM_SIZEOF 8 + +/* AGP registers */ + +#define PCI_AGP_VERSION 2 /* BCD version number */ +#define PCI_AGP_RFU 3 /* Rest of capability flags */ +#define PCI_AGP_STATUS 4 /* Status register */ +#define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */ +#define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */ +#define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */ +#define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */ +#define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */ +#define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */ +#define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */ +#define PCI_AGP_COMMAND 8 /* Control register */ +#define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */ +#define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */ +#define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */ +#define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */ +#define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */ +#define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */ +#define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 2x rate */ +#define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 1x rate */ +#define PCI_AGP_SIZEOF 12 + +/* Slot Identification */ + +#define PCI_SID_ESR 2 /* Expansion Slot Register */ +#define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */ +#define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */ +#define PCI_SID_CHASSIS_NR 3 /* Chassis Number */ + +/* Message Signalled Interrupts registers */ + +#define PCI_MSI_FLAGS 2 /* Various flags */ +#define PCI_MSI_FLAGS_64BIT 0x80 /* 64-bit addresses allowed */ +#define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */ +#define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */ +#define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */ +#define PCI_MSI_RFU 3 /* Rest of capability flags */ +#define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */ +#define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */ +#define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */ +#define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */ + +/* Advanced Error Reporting */ + +#define PCI_ERR_UNCOR_STATUS 4 /* Uncorrectable Error Status */ +#define PCI_ERR_UNC_TRAIN 0x00000001 /* Training */ +#define PCI_ERR_UNC_DLP 0x00000010 /* Data Link Protocol */ +#define PCI_ERR_UNC_POISON_TLP 0x00001000 /* Poisoned TLP */ +#define PCI_ERR_UNC_FCP 0x00002000 /* Flow Control Protocol */ +#define PCI_ERR_UNC_COMP_TIME 0x00004000 /* Completion Timeout */ +#define PCI_ERR_UNC_COMP_ABORT 0x00008000 /* Completer Abort */ +#define PCI_ERR_UNC_UNX_COMP 0x00010000 /* Unexpected Completion */ +#define PCI_ERR_UNC_RX_OVER 0x00020000 /* Receiver Overflow */ +#define PCI_ERR_UNC_MALF_TLP 0x00040000 /* Malformed TLP */ +#define PCI_ERR_UNC_ECRC 0x00080000 /* ECRC Error Status */ +#define PCI_ERR_UNC_UNSUP 0x00100000 /* Unsupported Request */ +#define PCI_ERR_UNCOR_MASK 8 /* Uncorrectable Error Mask */ + /* Same bits as above */ +#define PCI_ERR_UNCOR_SEVER 12 /* Uncorrectable Error Severity */ + /* Same bits as above */ +#define PCI_ERR_COR_STATUS 16 /* Correctable Error Status */ +#define PCI_ERR_COR_RCVR 0x00000001 /* Receiver Error Status */ +#define PCI_ERR_COR_BAD_TLP 0x00000040 /* Bad TLP Status */ +#define PCI_ERR_COR_BAD_DLLP 0x00000080 /* Bad DLLP Status */ +#define PCI_ERR_COR_REP_ROLL 0x00000100 /* REPLAY_NUM Rollover */ +#define PCI_ERR_COR_REP_TIMER 0x00001000 /* Replay Timer Timeout */ +#define PCI_ERR_COR_MASK 20 /* Correctable Error Mask */ + /* Same bits as above */ + +/** A PCI device ID list entry */ +struct pci_device_id { + /** Name */ + const char *name; + /** PCI vendor ID */ + uint16_t vendor; + /** PCI device ID */ + uint16_t device; + /** Arbitrary driver data */ + unsigned long driver_data; +}; + +/** Match-anything ID */ +#define PCI_ANY_ID 0xffff + +/** A PCI device */ +struct pci_device { + /** Generic device */ + struct device dev; + /** Memory base + * + * This is the physical address of the first valid memory BAR. + */ + unsigned long membase; + /** + * I/O address + * + * This is the physical address of the first valid I/O BAR. + */ + unsigned long ioaddr; + /** Vendor ID */ + uint16_t vendor; + /** Device ID */ + uint16_t device; + /** Device class */ + uint32_t class; + /** Interrupt number */ + uint8_t irq; + /** Bus number */ + uint8_t bus; + /** Device and function number */ + uint8_t devfn; + /** Driver for this device */ + struct pci_driver *driver; + /** Driver-private data + * + * Use pci_set_drvdata() and pci_get_drvdata() to access this + * field. + */ + void *priv; + /** Driver name */ + const char *driver_name; +}; + +/** A PCI driver */ +struct pci_driver { + /** PCI ID table */ + struct pci_device_id *ids; + /** Number of entries in PCI ID table */ + unsigned int id_count; + /** + * Probe device + * + * @v pci PCI device + * @v id Matching entry in ID table + * @ret rc Return status code + */ + int ( * probe ) ( struct pci_device *pci, + const struct pci_device_id *id ); + /** + * Remove device + * + * @v pci PCI device + */ + void ( * remove ) ( struct pci_device *pci ); +}; + +/** PCI driver table */ +#define PCI_DRIVERS __table ( struct pci_driver, "pci_drivers" ) + +/** Declare a PCI driver */ +#define __pci_driver __table_entry ( PCI_DRIVERS, 01 ) + +#define PCI_DEVFN( slot, func ) ( ( (slot) << 3 ) | (func) ) +#define PCI_SLOT( devfn ) ( ( (devfn) >> 3 ) & 0x1f ) +#define PCI_FUNC( devfn ) ( (devfn) & 0x07 ) +#define PCI_BUS( busdevfn ) ( (busdevfn) >> 8 ) +#define PCI_BUSDEVFN( bus, devfn ) ( ( (bus) << 8 ) | (devfn) ) + +#define PCI_BASE_CLASS( class ) ( (class) >> 16 ) +#define PCI_SUB_CLASS( class ) ( ( (class) >> 8 ) & 0xff ) +#define PCI_PROG_INTF( class ) ( (class) & 0xff ) + +/* + * PCI_ROM is used to build up entries in a struct pci_id array. It + * is also parsed by parserom.pl to generate Makefile rules and files + * for rom-o-matic. + * + * PCI_ID can be used to generate entries without creating a + * corresponding ROM in the build process. + */ +#define PCI_ID( _vendor, _device, _name, _description, _data ) { \ + .vendor = _vendor, \ + .device = _device, \ + .name = _name, \ + .driver_data = _data \ +} +#define PCI_ROM( _vendor, _device, _name, _description, _data ) \ + PCI_ID( _vendor, _device, _name, _description, _data ) + +extern void adjust_pci_device ( struct pci_device *pci ); +extern unsigned long pci_bar_start ( struct pci_device *pci, + unsigned int reg ); +extern int pci_find_capability ( struct pci_device *pci, int capability ); +extern unsigned long pci_bar_size ( struct pci_device *pci, unsigned int reg ); + +/** + * Set PCI driver-private data + * + * @v pci PCI device + * @v priv Private data + */ +static inline void pci_set_drvdata ( struct pci_device *pci, void *priv ) { + pci->priv = priv; +} + +/** + * Get PCI driver-private data + * + * @v pci PCI device + * @ret priv Private data + */ +static inline void * pci_get_drvdata ( struct pci_device *pci ) { + return pci->priv; +} + +#endif /* _IPXE_PCI_H */ |