ref: 75c92428225428c8fde2d015f010e608a0b12f1d
dir: /os/manga/io.h/
typedef struct BD BD;
typedef struct Ring Ring;
/*
* types of interrupts
*/
enum
{
/* some flags to change polarity and sensitivity */
IRQmask= 0xFF, /* actual vector address */
IRQactivelow= 0<<8,
IRQactivehigh= 1<<8,
IRQrising= 2<<8,
IRQfalling= 4<<8,
IRQmode= IRQactivelow | IRQactivehigh | IRQrising | IRQfalling,
IRQsoft= 1<<11, /* configure ext0 to ext3 as GPIO output */
IRQ= 0, /* notional bus */
};
enum {
IRQwmlc= 31, /* WAN link changed (edge) */
IRQwmts= 30, /* WAN MAC transmit status (edge) */
IRQwmrs= 29, /* WAN MAC receive status (edge) */
IRQwmtbu= 28, /* WAN MAC transmit buffer unavailable (edge) */
IRQwmrbu= 27, /* WAN MAC receive buffer unavailable (edge) */
IRQwmtps= 26, /* WAN MAC transmit process stopped (edge) */
IRQwmrps= 25, /* WAN MAC receive process stopped (edge) */
IRQaber= 24, /* AMBA bus error (level) */
IRQlmts= 17, /* LAN MAC transmit status (edge) */
IRQlmrs= 16, /* LAN MAC receive status (edge) */
IRQlmtbu= 15, /* LAN AMC transmit buffer unavailable (edge) */
IRQlmrbu= 14, /* LAN MAC receive buffer unavailable (edge) */
IRQlmtps= 13, /* LAN MAC transmit process stopped (edge) */
IRQlmrps= 12, /* LAN MAC receive process stopped (edge) */
IRQums= 11, /* UART modem status (level) */
IRQule= 10, /* UART line status (level) */
IRQurs= 9, /* UART receive status (level) */
IRQuts= 8, /* UART transmit status (level) */
IRQtm1= 7, /* timer 1 (edge) */
IRQtm0= 6, /* timer 0 (edge) */
IRQext3= 5, /* external interrupts (gpio control selects edge or level) */
IRQext2= 4,
IRQext1= 3,
IRQext0= 2,
IRQccts= 1, /* comms channel transmit status (level) */
IRQccrs= 0, /* comms channel receive status (level) */
};
/*
* 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 {
BusIRQ = IRQ,
BusPCI,
MaxBus
};
#define INTRREG ((IntrReg*)PHYSINTR)
typedef struct IntrReg IntrReg;
struct IntrReg {
ulong mc; /* mode control */
ulong en; /* enable */
ulong st; /* status */
ulong pw; /* priority for WAN */
ulong pad0;
ulong pl; /* priority for LAN */
ulong pt; /* priority for timer */
ulong pu; /* priority for UART */
ulong pe; /* priority for external */
ulong pc; /* priority for comms channel */
ulong pbe; /* priority for bus error response */
ulong ms; /* mask status */
ulong hpf; /* highest priority for FIQ */
ulong hpi; /* highest priority for IRQ */
};
#define TIMERREG ((TimerReg*)PHYSTIMER)
typedef struct TimerReg TimerReg;
struct TimerReg {
ulong enable; /* 1<<n to enable timer n */
ulong count1;
ulong count0; /* 0 becomes watchdog if byte 0 is 0xFF */
ulong pulse1;
ulong pulse0;
};
#define GPIOREG ((GpioReg*)PHYSGPIO)
typedef struct GpioReg GpioReg;
struct GpioReg {
ulong iopm; /* mode (1=output) */
ulong iopc; /* control */
ulong iopd; /* data */
};
enum {
/* WLAN and BT values are probably wrong */
GPIO_WLAN_act_o= 7,
GPIO_WLAN_100_o= 8,
GPIO_BT_act_o= 9,
GPIO_BT_100_o= 10,
GPIO_status_orange_o= 11,
GPIO_status_green_o= 12,
GPIO_button_i= 15, /* reset button, active low */
GPIO_misc_mask_o= (1<<13)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<6), /* no idea */
};
void gpioreserve(int);
void gpioconfig(int, ulong);
ulong gpioget(int);
void gpioset(int, int);
void gpiorelease(int);
enum {
/* software configuration bits for gpioconfig */
Gpio_in= 0<<4,
Gpio_out= 1<<4,
};
/*
* Host Communication buffer descriptors
*/
struct BD {
ulong ctrl; /* BdBusy and rx flags */
ulong size; /* buffer size, also BdLast and tx flags */
ulong addr;
ulong next; /* next descriptor address */
};
enum {
/* ctrl */
BdBusy= 1<<31, /* device owns it */
RxFS= 1<<30, /* first buffer of frame */
RxLS= 1<<29, /* last buffer of frame */
RxIPE= 1<<28, /* IP checksum error */
RxTCPE= 1<<27, /* TCP checksum error */
RxUDPE= 1<<26, /* UDP checksum error */
RxES= 1<<25, /* error summary */
RxMF= 1<<24, /* multicast */
RxRE= 1<<19, /* physical level reported error */
RxTL= 1<<18, /* frame too long */
RxRF= 1<<17, /* runt */
RxCE= 1<<16, /* CRC error */
RxFT= 1<<15, /* =0, Ether; =1, 802.3 */
RxFL= 0x7FF, /* frame length */
/* size and tx flags */
BdWrap= 1<<25, /* wrap to base of ring */
TxIC= 1<<31, /* interrupt on completion */
TxFS= 1<<30, /* first segment */
TxLS= 1<<29, /* last segment */
TxIPG= 1<<28, /* generate IP checksum */
TxTCPG= 1<<27, /* generate tcp/ip checksum */
TxUDPG= 1<<26, /* generate udp/ip checksum */
};
BD* bdalloc(ulong);
void bdfree(BD*, int);
void dumpbd(char*, BD*, int);
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))
int ioringinit(Ring*, int, int);
enum {
/* DMA configuration parameters */
/* DMA Direction */
DmaOut= 0,
DmaIn= 1,
};
/*
* 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)