ref: 7742661aebb96a26f1cb34a68bcf631065913806
dir: /sys/src/9/port/pci.h/
/*
* PCI support code.
*/
enum { /* type 0 & type 1 pre-defined header */
PciVID = 0x00, /* vendor ID */
PciDID = 0x02, /* device ID */
PciPCR = 0x04, /* command */
PciPSR = 0x06, /* status */
PciRID = 0x08, /* revision ID */
PciCCRp = 0x09, /* programming interface class code */
PciCCRu = 0x0A, /* sub-class code */
PciCCRb = 0x0B, /* base class code */
PciCLS = 0x0C, /* cache line size */
PciLTR = 0x0D, /* latency timer */
PciHDT = 0x0E, /* header type */
PciBST = 0x0F, /* BIST */
PciBAR0 = 0x10, /* base address */
PciBAR1 = 0x14,
PciCAP = 0x34, /* capabilities pointer */
PciINTL = 0x3C, /* interrupt line */
PciINTP = 0x3D, /* interrupt pin */
};
/* ccrb (base class code) values; controller types */
enum {
Pcibcpci1 = 0, /* pci 1.0; no class codes defined */
Pcibcstore = 1, /* mass storage */
Pcibcnet = 2, /* network */
Pcibcdisp = 3, /* display */
Pcibcmmedia = 4, /* multimedia */
Pcibcmem = 5, /* memory */
Pcibcbridge = 6, /* bridge */
Pcibccomm = 7, /* simple comms (e.g., serial) */
Pcibcbasesys = 8, /* base system */
Pcibcinput = 9, /* input */
Pcibcdock = 0xa, /* docking stations */
Pcibcproc = 0xb, /* processors */
Pcibcserial = 0xc, /* serial bus (e.g., USB) */
Pcibcwireless = 0xd, /* wireless */
Pcibcintell = 0xe, /* intelligent i/o */
Pcibcsatcom = 0xf, /* satellite comms */
Pcibccrypto = 0x10, /* encryption/decryption */
Pcibcdacq = 0x11, /* data acquisition & signal proc. */
};
/* ccru (sub-class code) values; common cases only */
enum {
/* mass storage */
Pciscscsi = 0, /* SCSI */
Pciscide = 1, /* IDE (ATA) */
/* network */
Pciscether = 0, /* Ethernet */
/* display */
Pciscvga = 0, /* VGA */
Pciscxga = 1, /* XGA */
Pcisc3d = 2, /* 3D */
/* bridges */
Pcischostpci = 0, /* host/pci */
Pciscpcicpci = 1, /* pci/pci */
/* simple comms */
Pciscserial = 0, /* 16450, etc. */
Pciscmultiser = 1, /* multiport serial */
/* serial bus */
Pciscusb = 3, /* USB */
};
enum { /* type 0 pre-defined header */
PciCIS = 0x28, /* cardbus CIS pointer */
PciSVID = 0x2C, /* subsystem vendor ID */
PciSID = 0x2E, /* subsystem ID */
PciEBAR0 = 0x30, /* expansion ROM base address */
PciMGNT = 0x3E, /* burst period length */
PciMLT = 0x3F, /* maximum latency between bursts */
};
enum { /* type 1 pre-defined header */
PciPBN = 0x18, /* primary bus number */
PciSBN = 0x19, /* secondary bus number */
PciUBN = 0x1A, /* subordinate bus number */
PciSLTR = 0x1B, /* secondary latency timer */
PciIBR = 0x1C, /* I/O base */
PciILR = 0x1D, /* I/O limit */
PciSPSR = 0x1E, /* secondary status */
PciMBR = 0x20, /* memory base */
PciMLR = 0x22, /* memory limit */
PciPMBR = 0x24, /* prefetchable memory base */
PciPMLR = 0x26, /* prefetchable memory limit */
PciPUBR = 0x28, /* prefetchable base upper 32 bits */
PciPULR = 0x2C, /* prefetchable limit upper 32 bits */
PciIUBR = 0x30, /* I/O base upper 16 bits */
PciIULR = 0x32, /* I/O limit upper 16 bits */
PciEBAR1 = 0x38, /* expansion ROM base address */
PciBCR = 0x3E, /* bridge control register */
};
enum { /* type 2 pre-defined header */
PciCBExCA = 0x10,
PciCBSPSR = 0x16,
PciCBPBN = 0x18, /* primary bus number */
PciCBSBN = 0x19, /* secondary bus number */
PciCBUBN = 0x1A, /* subordinate bus number */
PciCBSLTR = 0x1B, /* secondary latency timer */
PciCBMBR0 = 0x1C,
PciCBMLR0 = 0x20,
PciCBMBR1 = 0x24,
PciCBMLR1 = 0x28,
PciCBIBR0 = 0x2C, /* I/O base */
PciCBILR0 = 0x30, /* I/O limit */
PciCBIBR1 = 0x34, /* I/O base */
PciCBILR1 = 0x38, /* I/O limit */
PciCBSVID = 0x40, /* subsystem vendor ID */
PciCBSID = 0x42, /* subsystem ID */
PciCBLMBAR = 0x44, /* legacy mode base address */
};
/* capabilities */
enum {
PciCapPMG = 0x01, /* power management */
PciCapAGP = 0x02,
PciCapVPD = 0x03, /* vital product data */
PciCapSID = 0x04, /* slot id */
PciCapMSI = 0x05,
PciCapCHS = 0x06, /* compact pci hot swap */
PciCapPCIX = 0x07,
PciCapHTC = 0x08, /* hypertransport irq conf */
PciCapVND = 0x09, /* vendor specific information */
PciCapPCIe = 0x10,
PciCapMSIX = 0x11,
PciCapSATA = 0x12,
PciCapHSW = 0x0c, /* hot swap */
};
enum {
/* bar bits */
Barioaddr = 1<<0, /* vs. memory addr */
Barwidthshift = 1,
Barwidthmask = 3,
Barwidth32 = 0,
Barwidth64 = 2,
Barprefetch = 1<<3,
};
enum
{ /* command register */
IOen = (1<<0),
MEMen = (1<<1),
MASen = (1<<2),
MemWrInv = (1<<4),
PErrEn = (1<<6),
SErrEn = (1<<8),
};
typedef struct Pcidev Pcidev;
struct Pcidev
{
int tbdf; /* type+bus+device+function */
ushort vid; /* vendor ID */
ushort did; /* device ID */
ushort pcr;
uchar rid;
uchar ccrp;
uchar ccru;
uchar ccrb;
uchar cls;
uchar ltr;
uchar intl; /* interrupt line */
struct {
uvlong bar; /* base address */
vlong size;
} mem[6];
struct { /* expansion rom bar */
uvlong bar;
vlong size;
} rom;
struct { /* 32-bit io and memory windows */
uvlong bar;
vlong size;
} ioa, mema;
struct { /* 64-bit prefechable memory window */
uvlong bar;
vlong size;
} prefa;
Pcidev* list;
Pcidev* link; /* next device on this bno */
Pcidev* parent; /* up a bus */
Pcidev* bridge; /* down a bus */
int pmrb; /* power management register block */
int msi; /* MSI capability register block */
};
enum {
/* vendor ids */
Vintel = 0x8086,
Vmyricom= 0x14c1,
Vatiamd = 0x1002,
Vjmicron= 0x197b,
Vmarvell= 0x1b4b,
Vnvidia = 0x10de,
Vrealtek= 0x10ec,
};
enum
{
MaxFNO = 7,
MaxUBN = 255,
};
extern int pcimaxdno;
extern Pcidev *pciparentdev;
extern void pcidevfree(Pcidev* pcidev);
extern int pcicfgr32(Pcidev* pcidev, int rno);
extern void pcicfgw32(Pcidev* pcidev, int rno, int data);
extern int pcicfgr16(Pcidev* pcidev, int rno);
extern void pcicfgw16(Pcidev* pcidev, int rno, int data);
extern int pcicfgr8(Pcidev* pcidev, int rno);
extern void pcicfgw8(Pcidev* pcidev, int rno, int data);
extern int pciscan(int bno, Pcidev **list, Pcidev *parent);
extern void pcibusmap(Pcidev *root, uvlong *pmema, ulong *pioa, int wrreg);
extern void pcibussize(Pcidev *root, uvlong *msize, ulong *iosize);
extern Pcidev* pcimatch(Pcidev* prev, int vid, int did);
extern Pcidev* pcimatchtbdf(int tbdf);
extern vlong pcibarsize(Pcidev *, int rno);
extern void pcisetbar(Pcidev *, int, uvlong);
extern uchar pciipin(Pcidev *pci, uchar pin);
extern void pcisetioe(Pcidev* p);
extern void pciclrioe(Pcidev* p);
extern void pcisetbme(Pcidev* p);
extern void pciclrbme(Pcidev* p);
extern void pcisetmwi(Pcidev* p);
extern void pciclrmwi(Pcidev* p);
extern int pcicap(Pcidev *p, int cap);
extern int pcihtcap(Pcidev *p, int cap);
extern int pcienumcaps(Pcidev *p, int (*fmatch)(Pcidev*, int, int, int), int arg);
extern int pcimsienable(Pcidev *p, uvlong addr, ulong data);
extern int pcimsidisable(Pcidev *p);
extern int pcigetpms(Pcidev* p);
extern int pcisetpms(Pcidev* p, int state);
extern void pcienable(Pcidev *p);
extern void pcidisable(Pcidev *p);
extern void pcihinv(Pcidev* p);
extern void pcireset(void);
enum {
BusCBUS = 0, /* Corollary CBUS */
BusCBUSII, /* Corollary CBUS II */
BusEISA, /* Extended ISA */
BusFUTURE, /* IEEE Futurebus */
BusINTERN, /* Internal bus */
BusISA, /* Industry Standard Architecture */
BusMBI, /* Multibus I */
BusMBII, /* Multibus II */
BusMCA, /* Micro Channel Architecture */
BusMPI, /* MPI */
BusMPSA, /* MPSA */
BusNUBUS, /* Apple Macintosh NuBus */
BusPCI, /* Peripheral Component Interconnect */
BusPCMCIA, /* PC Memory Card International Association */
BusTC, /* DEC TurboChannel */
BusVL, /* VESA Local bus */
BusVME, /* VMEbus */
BusXPRESS, /* Express System Bus */
};
#define MKBUS(t,b,d,f) (((t)<<24)|(((b)&0xFF)<<16)|(((d)&0x1F)<<11)|(((f)&0x07)<<8))
#define BUSFNO(tbdf) (((tbdf)>>8)&0x07)
#define BUSDNO(tbdf) (((tbdf)>>11)&0x1F)
#define BUSBNO(tbdf) (((tbdf)>>16)&0xFF)
#define BUSTYPE(tbdf) ((tbdf)>>24)
#define BUSBDF(tbdf) ((tbdf)&0x00FFFF00)
extern int tbdffmt(Fmt*);
#pragma varargck type "T" int
#pragma varargck type "T" uint