static void
ixp12x0_set_intrmask(uint32_t irqs, uint32_t pci_irqs)
{
if (irqs & (1U << IXP12X0_INTR_UART)) {
ixp12x0_disable_uart_irq();
} else {
ixp12x0_enable_uart_irq();
}
IXPREG(IXPPCI_IRQ_ENABLE_CLEAR) = pci_irqs;
IXPREG(IXPPCI_IRQ_ENABLE_SET) = pci_intr_enabled & ~pci_irqs;
}
void
arm_mask_irq(uintptr_t nb)
{
int i;
i = disable_interrupts(I32_bit);
if (nb < 32) {
intr_enabled &= ~(1 << nb);
ixp425_set_intrmask();
} else {
intr_enabled2 &= ~(1 << (nb - 32));
ixp435_set_intrmask();
}
restore_interrupts(i);
/*XXX; If it's a GPIO interrupt, ACK it know. Can it be a problem ?*/
if (nb < 32 && ((1 << nb) & IXP425_INT_GPIOMASK))
IXPREG(IXP425_GPIO_VBASE + IXP425_GPIO_GPISR) =
ixp425_irq2gpio_bit(nb);
}
static void
ixp12x0_enable_irq(int irq)
{
if (irq < SYS_NIRQ) {
intr_enabled |= (1U << irq);
switch (irq) {
case IXP12X0_INTR_UART:
ixp12x0_enable_uart_irq();
break;
case IXP12X0_INTR_PCI:
/* nothing to do */
break;
default:
panic("enable_irq:bad IRQ %d", irq);
}
} else {
pci_intr_enabled |= (1U << (irq - SYS_NIRQ));
IXPREG(IXPPCI_IRQ_ENABLE_SET) = (1U << (irq - SYS_NIRQ));
}
}
static inline void
ixp12x0_disable_irq(int irq)
{
if (irq < SYS_NIRQ) {
intr_enabled ^= ~(1U << irq);
switch (irq) {
case IXP12X0_INTR_UART:
ixp12x0_disable_uart_irq();
break;
case IXP12X0_INTR_PCI:
/* nothing to do */
break;
default:
/* nothing to do */
break;
}
} else {
pci_intr_enabled &= ~(1U << (irq - SYS_NIRQ));
IXPREG(IXPPCI_IRQ_ENABLE_CLEAR) = (1U << (irq - SYS_NIRQ));
}
}
/*
* void cpu_reboot(int howto, char *bootstr)
*
* Reboots the system
*
* Deal with any syncing, unmounting, dumping and shutdown hooks,
* then reset the CPU.
*/
void
cpu_reboot(int howto, char *bootstr)
{
u_int32_t reg;
#ifdef DIAGNOSTIC
/* info */
printf("boot: howto=%08x curproc=%p\n", howto, curproc);
#endif
/*
* If we are still cold then hit the air brakes
* and crash to earth fast
*/
if (cold) {
doshutdownhooks();
printf("The operating system has halted.\n");
printf("Please press any key to reboot.\n\n");
cngetc();
printf("rebooting...\n");
goto reset;
}
/* Disable console buffering */
/*
* If RB_NOSYNC was not specified sync the discs.
* Note: Unless cold is set to 1 here, syslogd will die during the
* unmount. It looks like syslogd is getting woken up only to find
* that it cannot page part of the binary in as the filesystem has
* been unmounted.
*/
if (!(howto & RB_NOSYNC))
bootsync();
/* Say NO to interrupts */
splhigh();
/* Do a dump if requested. */
if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
dumpsys();
/* Run any shutdown hooks */
doshutdownhooks();
/* Make sure IRQ's are disabled */
IRQdisable;
if (howto & RB_HALT) {
printf("The operating system has halted.\n");
printf("Please press any key to reboot.\n\n");
cngetc();
}
printf("rebooting...\n\r");
reset:
/*
* Make really really sure that all interrupts are disabled,
*/
(void) disable_interrupts(I32_bit|F32_bit);
IXPREG(IXP425_INT_ENABLE) = 0;
/*
* Map the boot Flash device down at physical address 0.
* This is safe since NetBSD runs out of an alias of
* SDRAM at 0x10000000.
*/
reg = EXP_CSR_READ_4(ixpsip_softc, EXP_CNFG0_OFFSET);
reg |= EXP_CNFG0_MEM_MAP;
EXP_CSR_WRITE_4(ixpsip_softc, EXP_CNFG0_OFFSET, reg);
/*
* Jump into the bootcode's reset vector
*
* XXX:
* Redboot doesn't like the state in which we leave the PCI
* ethernet card, and so fails to detect it on reboot. This
* pretty much necessitates a hard reset/power cycle to be
* able to download a new kernel image over ethernet.
*
* I suspect this is due to a bug in Redboot's i82557 driver.
*/
cpu_reset();
/* ...and if that didn't work, just croak. */
printf("RESET FAILED!\n");
for (;;);
}
static inline uint32_t
ixp12x0_pci_irq_read(void)
{
return IXPREG(IXPPCI_IRQ_STATUS);
}
static inline uint32_t
ixp12x0_irq_read(void)
{
return IXPREG(IXP12X0_IRQ_VBASE) & IXP12X0_INTR_MASK;
}
static __inline uint32_t
ixp435_irq_read(void)
{
return IXPREG(IXP435_INT_STATUS2) & intr_enabled2;
}
void
ixp4xx_write_feature_bits(uint32_t v)
{
IXPREG(IXP425_EXP_VBASE + EXP_FCTRL_OFFSET) = ~v;
}
