ref: 83978bb12d7356000b5ebeb164bcea9a422594da
dir: /sys/src/boot/bitsy/io.h/
/*
* Definitions for IO devices. Used only in C.
*/
enum
{
/* hardware counter frequency */
ClockFreq= 3686400,
};
/*
* IRQ's defined by SA1100
*/
enum
{
IRQgpio0= 0,
IRQgpio1= 1,
IRQgpio2= 2,
IRQgpio3= 3,
IRQgpio4= 4,
IRQgpio5= 5,
IRQgpio6= 6,
IRQgpio7= 7,
IRQgpio8= 8,
IRQgpio9= 9,
IRQgpio10= 10,
IRQgpiohi= 11,
IRQlcd= 12,
IRQudc= 13,
IRQuart1b= 15,
IRQuart2= 16,
IRQuart3= 17,
IRQmcp= 18,
IRQssp= 19,
IRQdma0= 20,
IRQdma1= 21,
IRQdma2= 22,
IRQdma3= 23,
IRQdma4= 24,
IRQdma5= 25,
IRQtimer0= 26,
IRQtimer1= 27,
IRQtimer2= 28,
IRQtimer3= 29,
IRQsecond= 30,
IRQrtc= 31,
};
/*
* GPIO lines (signal names from compaq document). _i indicates input
* and _o output.
*/
enum
{
GPIO_PWR_ON_i= 1<<0, /* power button */
GPIO_UP_IRQ_i= 1<<1, /* microcontroller interrupts */
GPIO_LDD8_o= 1<<2, /* LCD data 8-15 */
GPIO_LDD9_o= 1<<3,
GPIO_LDD10_o= 1<<4,
GPIO_LDD11_o= 1<<5,
GPIO_LDD12_o= 1<<6,
GPIO_LDD13_o= 1<<7,
GPIO_LDD14_o= 1<<8,
GPIO_LDD15_o= 1<<9,
GPIO_CARD_IND1_i= 1<<10, /* card inserted in PCMCIA socket 1 */
GPIO_CARD_IRQ1_i= 1<<11, /* PCMCIA socket 1 interrupt */
GPIO_CLK_SET0_o= 1<<12, /* clock selects for audio codec */
GPIO_CLK_SET1_o= 1<<13,
GPIO_L3_SDA_io= 1<<14, /* UDA1341 interface */
GPIO_L3_MODE_o= 1<<15,
GPIO_L3_SCLK_o= 1<<16,
GPIO_CARD_IND0_i= 1<<17, /* card inserted in PCMCIA socket 0 */
GPIO_KEY_ACT_i= 1<<18, /* hot key from cradle */
GPIO_SYS_CLK_i= 1<<19, /* clock from codec */
GPIO_BAT_FAULT_i= 1<<20, /* battery fault */
GPIO_CARD_IRQ0_i= 1<<21, /* PCMCIA socket 0 interrupt */
GPIO_LOCK_i= 1<<22, /* expansion pack lock/unlock */
GPIO_COM_DCD_i= 1<<23, /* DCD from UART3 */
GPIO_OPT_IRQ_i= 1<<24, /* expansion pack IRQ */
GPIO_COM_CTS_i= 1<<25, /* CTS from UART3 */
GPIO_COM_RTS_o= 1<<26, /* RTS to UART3 */
GPIO_OPT_IND_i= 1<<27, /* expansion pack inserted */
/* Peripheral Unit GPIO pin assignments: alternate functions */
GPIO_SSP_TXD_o= 1<<10, /* SSP Transmit Data */
GPIO_SSP_RXD_i= 1<<11, /* SSP Receive Data */
GPIO_SSP_SCLK_o= 1<<12, /* SSP Sample CLocK */
GPIO_SSP_SFRM_o= 1<<13, /* SSP Sample FRaMe */
/* ser. port 1: */
GPIO_UART_TXD_o= 1<<14, /* UART Transmit Data */
GPIO_UART_RXD_i= 1<<15, /* UART Receive Data */
GPIO_SDLC_SCLK_io= 1<<16, /* SDLC Sample CLocK (I/O) */
GPIO_SDLC_AAF_o= 1<<17, /* SDLC Abort After Frame */
GPIO_UART_SCLK1_i= 1<<18, /* UART Sample CLocK 1 */
/* ser. port 4: */
GPIO_SSP_CLK_i= 1<<19, /* SSP external CLocK */
/* ser. port 3: */
GPIO_UART_SCLK3_i= 1<<20, /* UART Sample CLocK 3 */
/* ser. port 4: */
GPIO_MCP_CLK_i= 1<<21, /* MCP CLocK */
/* test controller: */
GPIO_TIC_ACK_o= 1<<21, /* TIC ACKnowledge */
GPIO_MBGNT_o= 1<<21, /* Memory Bus GraNT */
GPIO_TREQA_i= 1<<22, /* TIC REQuest A */
GPIO_MBREQ_i= 1<<22, /* Memory Bus REQuest */
GPIO_TREQB_i= 1<<23, /* TIC REQuest B */
GPIO_1Hz_o= 1<<25, /* 1 Hz clock */
GPIO_RCLK_o= 1<<26, /* internal (R) CLocK (O, fcpu/2) */
GPIO_32_768kHz_o= 1<<27, /* 32.768 kHz clock (O, RTC) */
};
/*
* types of interrupts
*/
enum
{
GPIOrising,
GPIOfalling,
GPIOboth,
IRQ,
};
/* hardware registers */
typedef struct Uartregs Uartregs;
struct Uartregs
{
ulong ctl[4];
ulong dummya;
ulong data;
ulong dummyb;
ulong status[2];
};
Uartregs *uart3regs;
/* general purpose I/O lines control registers */
typedef struct GPIOregs GPIOregs;
struct GPIOregs
{
ulong level; /* 1 == high */
ulong direction; /* 1 == output */
ulong set; /* a 1 sets the bit, 0 leaves it alone */
ulong clear; /* a 1 clears the bit, 0 leaves it alone */
ulong rising; /* rising edge detect enable */
ulong falling; /* falling edge detect enable */
ulong edgestatus; /* writing a 1 bit clears */
ulong altfunc; /* turn on alternate function for any set bits */
};
extern GPIOregs *gpioregs;
/* extra general purpose I/O bits, output only */
enum
{
EGPIO_prog_flash= 1<<0,
EGPIO_pcmcia_reset= 1<<1,
EGPIO_exppack_reset= 1<<2,
EGPIO_codec_reset= 1<<3,
EGPIO_exp_nvram_power= 1<<4,
EGPIO_exp_full_power= 1<<5,
EGPIO_lcd_3v= 1<<6,
EGPIO_rs232_power= 1<<7,
EGPIO_lcd_ic_power= 1<<8,
EGPIO_ir_power= 1<<9,
EGPIO_audio_power= 1<<10,
EGPIO_audio_ic_power= 1<<11,
EGPIO_audio_mute= 1<<12,
EGPIO_fir= 1<<13, /* not set is sir */
EGPIO_lcd_5v= 1<<14,
EGPIO_lcd_9v= 1<<15,
};
extern ulong *egpioreg;
/* Peripheral pin controller registers */
typedef struct PPCregs PPCregs;
struct PPCregs {
ulong direction;
ulong state;
ulong assignment;
ulong sleepdir;
ulong flags;
};
extern PPCregs *ppcregs;
/* Synchronous Serial Port controller registers */
typedef struct SSPregs SSPregs;
struct SSPregs {
ulong control0;
ulong control1;
ulong dummy0;
ulong data;
ulong dummy1;
ulong status;
};
extern SSPregs *sspregs;
/* Multimedia Communications Port controller registers */
typedef struct MCPregs MCPregs;
struct MCPregs {
ulong control0;
ulong reserved0;
ulong data0;
ulong data1;
ulong data2;
ulong reserved1;
ulong status;
ulong reserved[11];
ulong control1;
};
extern MCPregs *mcpregs;
/*
* memory configuration
*/
enum
{
/* bit shifts for pcmcia access time counters */
MECR_io0= 0,
MECR_attr0= 5,
MECR_mem0= 10,
MECR_fast0= 11,
MECR_io1= MECR_io0+16,
MECR_attr1= MECR_attr0+16,
MECR_mem1= MECR_mem0+16,
MECR_fast1= MECR_fast0+16,
};
typedef struct MemConfRegs MemConfRegs;
struct MemConfRegs
{
ulong mdcnfg; /* dram */
ulong mdcas00; /* dram banks 0/1 */
ulong mdcas01;
ulong mdcas02;
ulong msc0; /* static */
ulong msc1;
ulong mecr; /* pcmcia */
ulong mdrefr; /* dram refresh */
ulong mdcas20; /* dram banks 2/3 */
ulong mdcas21;
ulong mdcas22;
ulong msc2; /* static */
ulong smcnfg; /* SMROM config */
};
extern MemConfRegs *memconfregs;
/*
* power management
*/
typedef struct PowerRegs PowerRegs;
struct PowerRegs
{
ulong pmcr; /* Power manager control register */
ulong pssr; /* Power manager sleep status register */
ulong pspr; /* Power manager scratch pad register */
ulong pwer; /* Power manager wakeup enable register */
ulong pcfr; /* Power manager general configuration register */
ulong ppcr; /* Power manager PPL configuration register */
ulong pgsr; /* Power manager GPIO sleep state register */
ulong posr; /* Power manager oscillator status register */
};
extern PowerRegs *powerregs;