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c1726d6f1a
Use per-iosapic lock for indirect iosapic register access. It reduces lock contention. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
#ifndef __ASM_IA64_IOSAPIC_H
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#define __ASM_IA64_IOSAPIC_H
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#define IOSAPIC_REG_SELECT 0x0
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#define IOSAPIC_WINDOW 0x10
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#define IOSAPIC_EOI 0x40
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#define IOSAPIC_VERSION 0x1
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/*
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* Redirection table entry
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*/
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#define IOSAPIC_RTE_LOW(i) (0x10+i*2)
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#define IOSAPIC_RTE_HIGH(i) (0x11+i*2)
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#define IOSAPIC_DEST_SHIFT 16
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/*
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* Delivery mode
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*/
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#define IOSAPIC_DELIVERY_SHIFT 8
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#define IOSAPIC_FIXED 0x0
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#define IOSAPIC_LOWEST_PRIORITY 0x1
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#define IOSAPIC_PMI 0x2
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#define IOSAPIC_NMI 0x4
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#define IOSAPIC_INIT 0x5
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#define IOSAPIC_EXTINT 0x7
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/*
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* Interrupt polarity
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*/
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#define IOSAPIC_POLARITY_SHIFT 13
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#define IOSAPIC_POL_HIGH 0
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#define IOSAPIC_POL_LOW 1
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/*
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* Trigger mode
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*/
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#define IOSAPIC_TRIGGER_SHIFT 15
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#define IOSAPIC_EDGE 0
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#define IOSAPIC_LEVEL 1
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/*
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* Mask bit
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*/
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#define IOSAPIC_MASK_SHIFT 16
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#define IOSAPIC_MASK (1<<IOSAPIC_MASK_SHIFT)
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#ifndef __ASSEMBLY__
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#ifdef CONFIG_IOSAPIC
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#define NR_IOSAPICS 256
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static inline unsigned int __iosapic_read(char __iomem *iosapic, unsigned int reg)
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{
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writel(reg, iosapic + IOSAPIC_REG_SELECT);
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return readl(iosapic + IOSAPIC_WINDOW);
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}
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static inline void __iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
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{
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writel(reg, iosapic + IOSAPIC_REG_SELECT);
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writel(val, iosapic + IOSAPIC_WINDOW);
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}
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static inline void iosapic_eoi(char __iomem *iosapic, u32 vector)
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{
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writel(vector, iosapic + IOSAPIC_EOI);
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}
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extern void __init iosapic_system_init (int pcat_compat);
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extern int __devinit iosapic_init (unsigned long address,
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unsigned int gsi_base);
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#ifdef CONFIG_HOTPLUG
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extern int iosapic_remove (unsigned int gsi_base);
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#else
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#define iosapic_remove(gsi_base) (-EINVAL)
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#endif /* CONFIG_HOTPLUG */
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extern int gsi_to_vector (unsigned int gsi);
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extern int gsi_to_irq (unsigned int gsi);
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extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity,
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unsigned long trigger);
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extern void iosapic_unregister_intr (unsigned int irq);
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extern void __devinit iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
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unsigned long polarity,
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unsigned long trigger);
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extern int __init iosapic_register_platform_intr (u32 int_type,
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unsigned int gsi,
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int pmi_vector,
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u16 eid, u16 id,
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unsigned long polarity,
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unsigned long trigger);
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extern unsigned int iosapic_version (char __iomem *addr);
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#ifdef CONFIG_NUMA
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extern void __devinit map_iosapic_to_node (unsigned int, int);
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#endif
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#else
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#define iosapic_system_init(pcat_compat) do { } while (0)
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#define iosapic_init(address,gsi_base) (-EINVAL)
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#define iosapic_remove(gsi_base) (-ENODEV)
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#define iosapic_register_intr(gsi,polarity,trigger) (gsi)
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#define iosapic_unregister_intr(irq) do { } while (0)
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#define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger) do { } while (0)
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#define iosapic_register_platform_intr(type,gsi,pmi,eid,id, \
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polarity,trigger) (gsi)
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#endif
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# endif /* !__ASSEMBLY__ */
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#endif /* __ASM_IA64_IOSAPIC_H */
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