diff options
Diffstat (limited to 'include/asm-mips')
| -rw-r--r-- | include/asm-mips/mach-generic/ide.h | 31 | ||||
| -rw-r--r-- | include/asm-mips/sibyte/bcm1480_regs.h | 5 |
2 files changed, 36 insertions, 0 deletions
diff --git a/include/asm-mips/mach-generic/ide.h b/include/asm-mips/mach-generic/ide.h index 2b928577be5..a77128362a7 100644 --- a/include/asm-mips/mach-generic/ide.h +++ b/include/asm-mips/mach-generic/ide.h @@ -29,6 +29,35 @@ #define IDE_ARCH_OBSOLETE_DEFAULTS +static __inline__ int ide_probe_legacy(void) +{ +#ifdef CONFIG_PCI + struct pci_dev *dev; + /* + * This can be called on the ide_setup() path, super-early in + * boot. But the down_read() will enable local interrupts, + * which can cause some machines to crash. So here we detect + * and flag that situation and bail out early. + */ + if (no_pci_devices()) + return 0; + dev = pci_get_class(PCI_CLASS_BRIDGE_EISA << 8, NULL); + if (dev) + goto found; + dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL); + if (dev) + goto found; + return 0; +found: + pci_dev_put(dev); + return 1; +#elif defined(CONFIG_EISA) || defined(CONFIG_ISA) + return 1; +#else + return 0; +#endif +} + static __inline__ int ide_default_irq(unsigned long base) { switch (base) { @@ -45,6 +74,8 @@ static __inline__ int ide_default_irq(unsigned long base) static __inline__ unsigned long ide_default_io_base(int index) { + if (!ide_probe_legacy()) + return 0; /* * If PCI is present then it is not safe to poke around * the other legacy IDE ports. Only 0x1f0 and 0x170 are diff --git a/include/asm-mips/sibyte/bcm1480_regs.h b/include/asm-mips/sibyte/bcm1480_regs.h index 2738c1366f6..c34d36b6b8c 100644 --- a/include/asm-mips/sibyte/bcm1480_regs.h +++ b/include/asm-mips/sibyte/bcm1480_regs.h @@ -227,10 +227,15 @@ (A_BCM1480_DUART(chan) + \ BCM1480_DUART_CHANREG_SPACING * 3 + (reg)) +#define DUART_IMRISR_SPACING 0x20 +#define DUART_INCHNG_SPACING 0x10 + #define R_BCM1480_DUART_IMRREG(chan) \ (R_DUART_IMR_A + ((chan) & 1) * DUART_IMRISR_SPACING) #define R_BCM1480_DUART_ISRREG(chan) \ (R_DUART_ISR_A + ((chan) & 1) * DUART_IMRISR_SPACING) +#define R_BCM1480_DUART_INCHREG(chan) \ + (R_DUART_IN_CHNG_A + ((chan) & 1) * DUART_INCHNG_SPACING) #define A_BCM1480_DUART_IMRREG(chan) \ (A_BCM1480_DUART_CTRLREG((chan), R_BCM1480_DUART_IMRREG(chan))) |