ref: 6c2f8fd5e4f0e0be44495a5526930fa3760cd87e
dir: /os/cerf405/io.h/
typedef struct BD BD;
typedef struct Ring Ring;
typedef struct MALdev MALdev;
typedef struct I2Cdev I2Cdev;
enum
{
/* 405EP UIC interrupt vectors (IBM bit numbering) */
VectorUIC= 0,
VectorUART0=VectorUIC,
VectorUART1,
VectorIIC,
VectorPCIECW,
VectorRsvd1,
VectorDMA0,
VectorDMA1,
VectorDMA2,
VectorDMA3,
VectorEtherwake,
VectorMALSERR,
VectorMALTXEOB,
VectorMALRXEOB,
VectorMALTXDE,
VectorMALRXDE,
VectorEMAC0,
VectorPCISERR,
VectorEMAC1,
VectorPCIPM,
VectorGPT0,
VectorGPT1,
VectorGPT2,
VectorGPT3,
VectorGPT4,
/* 1 reserved */
VectorIRQ= VectorUIC+25, /* IRQ0 to IRQ6 */
MaxVector= VectorIRQ+7,
/* some flags to change polarity and sensitivity */
IRQmask= 0xFF, /* actual vector address */
IRQactivelow= 1<<8,
IRQedge= 1<<9,
IRQcritical= 1<<10,
};
/*
* these are defined to keep the interface compatible with other
* architectures, but only BUSUNKNOWN is currently used
*/
#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)
#define BUSUNKNOWN (-1)
enum {
BusOPB,
BusPLB,
BusPCI,
MaxBus
};
/*
* MAL Buffer Descriptors and IO Rings
*/
struct BD {
ushort status;
ushort length;
ulong addr;
};
#define MAXIORING 256 /* hardware limit to ring size */
#define BDBUFLIM (4096-16) /* no MAL buffer larger than this */
BD* bdalloc(ulong);
void bdfree(BD*, int);
void dumpbd(char*, BD*, int);
enum {
/* Rx BDs, bits common to all protocols */
BDEmpty= 1<<15,
BDWrap= 1<<14, /* end of ring */
BDContin= 1<<13, /* continuous mode */
BDLast= 1<<12, /* last buffer in current packet */
BDFirst= 1<<11, /* first buffer in current packet (set by MAL) */
BDInt= 1<<10, /* interrupt when done */
/* Tx BDs */
BDReady= 1<<15, /* ready to transmit; set by driver, cleared by MAL */
/* BDWrap, BDInt, BDLast as above */
};
struct Ring {
BD* rdr; /* receive descriptor ring */
Block** rxb; /* receive ring buffers */
int rdrx; /* index into rdr */
int nrdre; /* length of rdr */
BD* tdr; /* transmit descriptor ring */
Block** txb; /* transmit ring buffers */
int tdrh; /* host index into tdr */
int tdri; /* interface index into tdr */
int ntdre; /* length of tdr */
int ntq; /* pending transmit requests */
};
#define NEXT(x, l) (((x)+1)%(l))
#define PREV(x, l) (((x) == 0) ? (l)-1: (x)-1)
#define HOWMANY(x, y) (((x)+((y)-1))/(y))
#define ROUNDUP(x, y) (HOWMANY((x), (y))*(y))
/*
* one per mal channel
*/
typedef struct Mal Mal;
struct Mal {
int n;
int len;
int tx;
ulong mask;
void* arg;
void (*interrupt)(Ureg*, void*);
};
Mal* malchannel(int, int, void (*)(Ureg*, void*), void*);
void maltxreset(Mal*);
void maltxinit(Mal*, Ring*);
void maltxenable(Mal*);
void malrxreset(Mal*);
void malrxinit(Mal*, Ring*, ulong);
void malrxenable(Mal*);
void ioringreserve(int, ulong, int, ulong);
int ioringinit(Ring*, int, int);
typedef struct Gpioregs Gpioregs;
struct Gpioregs {
ulong or; /* output register */
ulong tcr; /* tristate control */
ulong osrh; /* output select high (0-15) */
ulong osrl; /* output select low (16-31) */
ulong tsrh; /* tristate select high (0-15) */
ulong tsrl; /* tristate select low (16-31) */
ulong odr; /* open drain */
ulong ir; /* input */
ulong rr1; /* receive register */
ulong pad[3];
ulong isr1h; /* input select 1 high (0-15) */
ulong isr1l; /* input select 1 low (16-31) */
};
enum {
/* software configuration bits for gpioconfig */
Gpio_Alt1= 1<<0, /* implies specific settings of all the others, but include in or out */
Gpio_OD= 1<<1,
Gpio_Tri= 1<<2,
Gpio_in= 1<<4,
Gpio_out= 1<<5,
};
void gpioreserve(ulong);
void gpioconfig(ulong, ulong);
ulong gpioget(ulong);
void gpioset(ulong, ulong);
void gpiorelease(ulong);
/*
* used by ../port/devi2c.c and iic.c
*/
struct I2Cdev {
int addr;
int salen; /* length in bytes of subaddress, if used; 0 otherwise */
int tenbit; /* 10-bit addresses */
};
long i2crecv(I2Cdev*, void*, long, ulong);
long i2csend(I2Cdev*, void*, long, ulong);
void i2csetup(int);
/*
* PCI support code.
*/
enum { /* type 0 and 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,
PciINTL = 0x3C, /* interrupt line */
PciINTP = 0x3D, /* interrupt pin */
};
enum { /* type 0 pre-defined header */
PciBAR2 = 0x18,
PciBAR3 = 0x1C,
PciBAR4 = 0x20,
PciBAR5 = 0x24,
PciCIS = 0x28, /* cardbus CIS pointer */
PciSVID = 0x2C, /* subsystem vendor ID */
PciSID = 0x2E, /* cardbus CIS pointer */
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 = 0x28, /* 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 */
};
typedef struct Pcisiz Pcisiz;
struct Pcisiz
{
Pcidev* dev;
int siz;
int bar;
};
typedef struct Pcidev Pcidev;
struct Pcidev
{
int tbdf; /* type+bus+device+function */
ushort vid; /* vendor ID */
ushort did; /* device ID */
uchar rid;
uchar ccrp;
uchar ccru;
uchar ccrb;
struct {
ulong bar; /* base address */
int size;
} mem[6];
struct {
ulong bar;
int size;
} rom;
uchar intl; /* interrupt line */
Pcidev* list;
Pcidev* link; /* next device on this bno */
Pcidev* bridge; /* down a bus */
struct {
ulong bar;
int size;
} ioa, mema;
ulong pcr;
};
#define PCIWINDOW 0x80000000
#define PCIWADDR(va) (PADDR(va)+PCIWINDOW)