setup.c

Linux内核源代码 为压缩文件 是<<Linux内核>>一书中的源代码

		 VAC_CTRL_DELAY_IOWR(3)|
		 VAC_CTRL_DELAY_IORD(3)|
		 VAC_CTRL_RECOVERY_IOSELI(2)|
		 VAC_CTRL_DSACK0|VAC_CTRL_DSACK1|
		 VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL0_CTRL);
	vac_outw(VAC_CTRL_IOWR|
		 VAC_CTRL_DELAY_IOWR(3)|
		 VAC_CTRL_DELAY_IORD(3)|
		 VAC_CTRL_RECOVERY_IOSELI(2)|
		 VAC_CTRL_DSACK0|VAC_CTRL_DSACK1|
		 VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL1_CTRL);
	vac_outw(VAC_CTRL_IOWR|
		 VAC_CTRL_DELAY_IOWR(3)|
		 VAC_CTRL_DELAY_IORD(3)|
		 VAC_CTRL_RECOVERY_IOSELI(2)|
		 VAC_CTRL_DSACK0|VAC_CTRL_DSACK1|
		 VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL2_CTRL);
	vac_outw(VAC_CTRL_IOWR|
		 VAC_CTRL_DELAY_IOWR(3)|
		 VAC_CTRL_DELAY_IORD(3)|
		 VAC_CTRL_RECOVERY_IOSELI(2)|
		 VAC_CTRL_DSACK0|VAC_CTRL_DSACK1|
		 VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL3_CTRL);
	vac_outw(VAC_CTRL_IOWR|
		 VAC_CTRL_DELAY_IOWR(3)|
		 VAC_CTRL_DELAY_IORD(3)|
		 VAC_CTRL_RECOVERY_IOSELI(2)|
		 VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL4_CTRL);
	vac_outw(VAC_CTRL_IOWR|
		 VAC_CTRL_DELAY_IOWR(3)|
		 VAC_CTRL_DELAY_IORD(3)|
		 VAC_CTRL_RECOVERY_IOSELI(2)|
		 VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL5_CTRL);

        vac_show();
}

static void __init vac_start(void)
{
	vac_outw(0, VAC_ID);
	vac_outw(VAC_INT_CTRL_TIMER_DISABLE|
		 VAC_INT_CTRL_UART_B_DISABLE|
		 VAC_INT_CTRL_UART_A_DISABLE|
		 VAC_INT_CTRL_MBOX_DISABLE|
		 VAC_INT_CTRL_PIO4_DISABLE|
		 VAC_INT_CTRL_PIO7_DISABLE|
		 VAC_INT_CTRL_PIO8_DISABLE|
		 VAC_INT_CTRL_PIO9_DISABLE,VAC_INT_CTRL);
	vac_outw(VAC_INT_CTRL_TIMER_PIO10|
		 VAC_INT_CTRL_UART_B_PIO7|
		 VAC_INT_CTRL_UART_A_PIO7,VAC_INT_CTRL);
	/* 
	 *  Set quadro speed for both UARTs.
	 *  To do it we need use formulae from VIC/VAC manual,
	 *  keeping in mind Baget's 50MHz frequency...
	 */
	vac_outw((500000/(384*16))<<8,VAC_CPU_CLK_DIV); 
}

static void __init vic_show(void)
{
	unsigned char val;
	char *timeout[]  = { "4", "16", "32", "64", "128", "256", "disabled" };
	char *deadlock[] = { "[dedlk only]", "[dedlk only]", 
			     "[dedlk], [halt w/ rmc], [lberr]",
			     "[dedlk], [halt w/o rmc], [lberr]" };

	val = vic_inb(VIC_IFACE_CFG);
	if (val & VIC_IFACE_CFG_VME)
		printk("VMEbus controller ");
	if (val & VIC_IFACE_CFG_TURBO)
		printk("turbo ");
	if (val & VIC_IFACE_CFG_MSTAB)
		printk("metastability delay ");
	printk("%s ",
	       deadlock[VIC_IFACE_CFG_DEADLOCK_VAL(val)]);
	

	printk("interrupts: ");
	val = vic_inb(VIC_ERR_INT);
	if (!(val & VIC_ERR_INT_SYSFAIL))
		printk("[sysfail]");
	if (!(val & VIC_ERR_INT_TIMO))
		printk("[timeout]");
	if (!(val & VIC_ERR_INT_WRPOST))
		printk("[write post]");
	if (!(val & VIC_ERR_INT_ACFAIL))
		printk("[acfail] ");
	printk("\n");
	
	printk("timeouts: ");
	val = vic_inb(VIC_XFER_TIMO);
	printk("local %s, vme %s ",
	       timeout[VIC_XFER_TIMO_LOCAL_PERIOD_VAL(val)],
	       timeout[VIC_XFER_TIMO_VME_PERIOD_VAL(val)]);
	if (val & VIC_XFER_TIMO_VME)
		printk("acquisition ");
	if (val & VIC_XFER_TIMO_ARB)
		printk("arbitration ");
	printk("\n");

	val = vic_inb(VIC_LOCAL_TIM);
	printk("pas time: (%d,%d), ds time: %d\n",
	       VIC_LOCAL_TIM_PAS_ASSERT_VAL(val),
	       VIC_LOCAL_TIM_PAS_DEASSERT_VAL(val),
	       VIC_LOCAT_TIM_DS_DEASSERT_VAL(val));

	val = vic_inb(VIC_BXFER_DEF);
	printk("dma: ");
	if (val & VIC_BXFER_DEF_DUAL)
		printk("[dual path]");
	if (val & VIC_BXFER_DEF_LOCAL_CROSS)
		printk("[local boundary cross]");
	if (val & VIC_BXFER_DEF_VME_CROSS)
		printk("[vme boundary cross]");
	
}

static void __init vic_init(void)
{
	 unsigned char id = vic_inb(VIC_ID);
	 if ((id & 0xf0) != 0xf0)
		 panic("VIC not found");
	 printk(" VIC068A Rev. %X: ", id & 0x0f);

	 vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE,VIC_VME_II);
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE,VIC_VME_INT1);
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE,VIC_VME_INT2);
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE,VIC_VME_INT3);
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE,VIC_VME_INT4);
/*	 
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE, VIC_VME_INT5);
*/
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE, VIC_VME_INT6);

	 vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE, VIC_VME_INT7);
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE, VIC_DMA_INT);
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_NOAUTO|VIC_INT_EDGE|
		  VIC_INT_LOW|VIC_INT_DISABLE, VIC_LINT1);
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_NOAUTO|VIC_INT_EDGE|
		  VIC_INT_HIGH|VIC_INT_DISABLE, VIC_LINT2);
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_NOAUTO|VIC_INT_EDGE|
		  VIC_INT_HIGH|VIC_INT_DISABLE, VIC_LINT3);
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_NOAUTO|VIC_INT_EDGE|
		  VIC_INT_LOW|VIC_INT_DISABLE, VIC_LINT4);
/*	 
	 vic_outb(VIC_INT_IPL(3)|VIC_INT_NOAUTO|VIC_INT_LEVEL|
		  VIC_INT_LOW|VIC_INT_DISABLE, VIC_LINT5);
*/
	 vic_outb(VIC_INT_IPL(6)|VIC_INT_NOAUTO|VIC_INT_EDGE|
		  VIC_INT_LOW|VIC_INT_DISABLE, VIC_LINT6);
	 vic_outb(VIC_INT_IPL(6)|VIC_INT_NOAUTO|VIC_INT_EDGE|
		  VIC_INT_LOW|VIC_INT_DISABLE, VIC_LINT7);

	 vic_outb(VIC_INT_IPL(3)|
		  VIC_INT_SWITCH(0)|
		  VIC_INT_SWITCH(1)|
		  VIC_INT_SWITCH(2)|
		  VIC_INT_SWITCH(3), VIC_ICGS_INT);
	 vic_outb(VIC_INT_IPL(3)|
		  VIC_INT_SWITCH(0)|
		  VIC_INT_SWITCH(1)|
		  VIC_INT_SWITCH(2)|
		  VIC_INT_SWITCH(3), VIC_ICMS_INT);
	 vic_outb(VIC_INT_IPL(6)|
		  VIC_ERR_INT_SYSFAIL|
		  VIC_ERR_INT_TIMO|
		  VIC_ERR_INT_WRPOST|
		  VIC_ERR_INT_ACFAIL, VIC_ERR_INT);
	 vic_outb(VIC_ICxS_BASE_ID(0xf), VIC_ICGS_BASE);
	 vic_outb(VIC_ICxS_BASE_ID(0xe), VIC_ICMS_BASE);
	 vic_outb(VIC_LOCAL_BASE_ID(0x6), VIC_LOCAL_BASE);
	 vic_outb(VIC_ERR_BASE_ID(0x3), VIC_ERR_BASE);
	 vic_outb(VIC_XFER_TIMO_VME_PERIOD_32|
		  VIC_XFER_TIMO_LOCAL_PERIOD_32, VIC_XFER_TIMO);
	 vic_outb(VIC_LOCAL_TIM_PAS_ASSERT(2)|
		  VIC_LOCAT_TIM_DS_DEASSERT(1)|
		  VIC_LOCAL_TIM_PAS_DEASSERT(1), VIC_LOCAL_TIM);
	 vic_outb(VIC_BXFER_DEF_VME_CROSS|
		  VIC_BXFER_DEF_LOCAL_CROSS|
		  VIC_BXFER_DEF_AMSR|
		  VIC_BXFER_DEF_DUAL, VIC_BXFER_DEF);
	 vic_outb(VIC_SSxCR0_LOCAL_XFER_SINGLE|
		  VIC_SSxCR0_A32|VIC_SSxCR0_D32|
		  VIC_SS0CR0_TIMER_FREQ_NONE, VIC_SS0CR0);
	 vic_outb(VIC_SSxCR1_TF1(0xf)|
		  VIC_SSxCR1_TF2(0xf), VIC_SS0CR1);
	 vic_outb(VIC_SSxCR0_LOCAL_XFER_SINGLE|
		  VIC_SSxCR0_A24|VIC_SSxCR0_D32, VIC_SS1CR0);
	 vic_outb(VIC_SSxCR1_TF1(0xf)|
		  VIC_SSxCR1_TF2(0xf), VIC_SS1CR1);
         vic_outb(VIC_IFACE_CFG_NOHALT|
		  VIC_IFACE_CFG_NOTURBO, VIC_IFACE_CFG);
	 vic_outb(VIC_AMS_CODE(0), VIC_AMS);
	 vic_outb(VIC_BXFER_CTRL_INTERLEAVE(0), VIC_BXFER_CTRL);
	 vic_outb(0, VIC_BXFER_LEN_LO);
	 vic_outb(0, VIC_BXFER_LEN_HI);
	 vic_outb(VIC_REQ_CFG_FAIRNESS_DISABLED|
		  VIC_REQ_CFG_LEVEL(3)|
		  VIC_REQ_CFG_RR_ARBITRATION, VIC_REQ_CFG);
	 vic_outb(VIC_RELEASE_BLKXFER_BLEN(0)|
		  VIC_RELEASE_RWD, VIC_RELEASE);
	 vic_outb(VIC_IC6_RUN, VIC_IC6);
	 vic_outb(0, VIC_IC7);
	 
	 vic_show();
}

static void vic_start(void)
{
	vic_outb(VIC_INT_IPL(3)|
		 VIC_INT_NOAUTO|
		 VIC_INT_EDGE|
		 VIC_INT_HIGH|
		 VIC_INT_ENABLE, VIC_LINT7);
}

void __init baget_irq_setup(void)
{
	extern void bagetIRQ(void);

        /* Now, it's safe to set the exception vector. */
	set_except_vector(0, bagetIRQ);
}

extern void baget_machine_restart(char *command);
extern void baget_machine_halt(void);
extern void baget_machine_power_off(void);
 
void __init baget_setup(void)
{
	printk("BT23/63-201n found.\n");
	*BAGET_WRERR_ACK = 0;
	irq_setup = baget_irq_setup;

        _machine_restart   = baget_machine_restart;
        _machine_halt      = baget_machine_halt;
        _machine_power_off = baget_machine_power_off;

	vac_init();
	vic_init();
	vac_start();
	vic_start();
}