diff options
Diffstat (limited to 'arch/x86/kernel/io_apic.c')
| -rw-r--r-- | arch/x86/kernel/io_apic.c | 103 |
1 files changed, 52 insertions, 51 deletions
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c index 12e59df..ac47384 100644 --- a/arch/x86/kernel/io_apic.c +++ b/arch/x86/kernel/io_apic.c @@ -643,65 +643,66 @@ static void __init replace_pin_at_irq(unsigned int irq, add_pin_to_irq(irq, newapic, newpin); } -#define __DO_ACTION(R, ACTION_ENABLE, ACTION_DISABLE, FINAL) \ - \ -{ \ - int pin; \ - struct irq_cfg *cfg; \ - struct irq_pin_list *entry; \ - \ - cfg = irq_cfg(irq); \ - entry = cfg->irq_2_pin; \ - for (;;) { \ - unsigned int reg; \ - if (!entry) \ - break; \ - pin = entry->pin; \ - reg = io_apic_read(entry->apic, 0x10 + R + pin*2); \ - reg ACTION_DISABLE; \ - reg ACTION_ENABLE; \ - io_apic_modify(entry->apic, 0x10 + R + pin*2, reg); \ - FINAL; \ - if (!entry->next) \ - break; \ - entry = entry->next; \ - } \ -} - -#define DO_ACTION(name,R, ACTION_ENABLE, ACTION_DISABLE, FINAL) \ - \ - static void name##_IO_APIC_irq (unsigned int irq) \ - __DO_ACTION(R, ACTION_ENABLE, ACTION_DISABLE, FINAL) - -/* mask = 0 */ -DO_ACTION(__unmask, 0, |= 0, &= ~IO_APIC_REDIR_MASKED, ) +static inline void io_apic_modify_irq(unsigned int irq, + int mask_and, int mask_or, + void (*final)(struct irq_pin_list *entry)) +{ + int pin; + struct irq_cfg *cfg; + struct irq_pin_list *entry; + + cfg = irq_cfg(irq); + for (entry = cfg->irq_2_pin; entry != NULL; entry = entry->next) { + unsigned int reg; + pin = entry->pin; + reg = io_apic_read(entry->apic, 0x10 + pin * 2); + reg &= mask_and; + reg |= mask_or; + io_apic_modify(entry->apic, 0x10 + pin * 2, reg); + if (final) + final(entry); + } +} + +static void __unmask_IO_APIC_irq(unsigned int irq) +{ + io_apic_modify_irq(irq, ~IO_APIC_REDIR_MASKED, 0, NULL); +} #ifdef CONFIG_X86_64 -/* - * Synchronize the IO-APIC and the CPU by doing - * a dummy read from the IO-APIC - */ -static inline void io_apic_sync(unsigned int apic) +void io_apic_sync(struct irq_pin_list *entry) { - struct io_apic __iomem *io_apic = io_apic_base(apic); + /* + * Synchronize the IO-APIC and the CPU by doing + * a dummy read from the IO-APIC + */ + struct io_apic __iomem *io_apic; + io_apic = io_apic_base(entry->apic); readl(&io_apic->data); } -/* mask = 1 */ -DO_ACTION(__mask, 0, |= IO_APIC_REDIR_MASKED, &= ~0, io_apic_sync(entry->apic)) - -#else - -/* mask = 1 */ -DO_ACTION(__mask, 0, |= IO_APIC_REDIR_MASKED, &= ~0, ) - -/* mask = 1, trigger = 0 */ -DO_ACTION(__mask_and_edge, 0, |= IO_APIC_REDIR_MASKED, &= ~IO_APIC_REDIR_LEVEL_TRIGGER, ) +static void __mask_IO_APIC_irq(unsigned int irq) +{ + io_apic_modify_irq(irq, ~0, IO_APIC_REDIR_MASKED, &io_apic_sync); +} +#else /* CONFIG_X86_32 */ +static void __mask_IO_APIC_irq(unsigned int irq) +{ + io_apic_modify_irq(irq, ~0, IO_APIC_REDIR_MASKED, NULL); +} -/* mask = 0, trigger = 1 */ -DO_ACTION(__unmask_and_level, 0, |= IO_APIC_REDIR_LEVEL_TRIGGER, &= ~IO_APIC_REDIR_MASKED, ) +static void __mask_and_edge_IO_APIC_irq(unsigned int irq) +{ + io_apic_modify_irq(irq, ~IO_APIC_REDIR_LEVEL_TRIGGER, + IO_APIC_REDIR_MASKED, NULL); +} -#endif +static void __unmask_and_level_IO_APIC_irq(unsigned int irq) +{ + io_apic_modify_irq(irq, ~IO_APIC_REDIR_MASKED, + IO_APIC_REDIR_LEVEL_TRIGGER, NULL); +} +#endif /* CONFIG_X86_32 */ static void mask_IO_APIC_irq (unsigned int irq) { |
