1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_IA64_IOSAPIC_H 3 #define __ASM_IA64_IOSAPIC_H 4 5 #define IOSAPIC_REG_SELECT 0x0 6 #define IOSAPIC_WINDOW 0x10 7 #define IOSAPIC_EOI 0x40 8 9 #define IOSAPIC_VERSION 0x1 10 11 /* 12 * Redirection table entry 13 */ 14 #define IOSAPIC_RTE_LOW(i) (0x10+i*2) 15 #define IOSAPIC_RTE_HIGH(i) (0x11+i*2) 16 17 #define IOSAPIC_DEST_SHIFT 16 18 19 /* 20 * Delivery mode 21 */ 22 #define IOSAPIC_DELIVERY_SHIFT 8 23 #define IOSAPIC_FIXED 0x0 24 #define IOSAPIC_LOWEST_PRIORITY 0x1 25 #define IOSAPIC_PMI 0x2 26 #define IOSAPIC_NMI 0x4 27 #define IOSAPIC_INIT 0x5 28 #define IOSAPIC_EXTINT 0x7 29 30 /* 31 * Interrupt polarity 32 */ 33 #define IOSAPIC_POLARITY_SHIFT 13 34 #define IOSAPIC_POL_HIGH 0 35 #define IOSAPIC_POL_LOW 1 36 37 /* 38 * Trigger mode 39 */ 40 #define IOSAPIC_TRIGGER_SHIFT 15 41 #define IOSAPIC_EDGE 0 42 #define IOSAPIC_LEVEL 1 43 44 /* 45 * Mask bit 46 */ 47 48 #define IOSAPIC_MASK_SHIFT 16 49 #define IOSAPIC_MASK (1<<IOSAPIC_MASK_SHIFT) 50 51 #define IOSAPIC_VECTOR_MASK 0xffffff00 52 53 #ifndef __ASSEMBLY__ 54 55 #define NR_IOSAPICS 256 56 57 #define iosapic_pcat_compat_init ia64_native_iosapic_pcat_compat_init 58 #define __iosapic_read __ia64_native_iosapic_read 59 #define __iosapic_write __ia64_native_iosapic_write 60 #define iosapic_get_irq_chip ia64_native_iosapic_get_irq_chip 61 62 extern void __init ia64_native_iosapic_pcat_compat_init(void); 63 extern struct irq_chip *ia64_native_iosapic_get_irq_chip(unsigned long trigger); 64 65 static inline unsigned int 66 __ia64_native_iosapic_read(char __iomem *iosapic, unsigned int reg) 67 { 68 writel(reg, iosapic + IOSAPIC_REG_SELECT); 69 return readl(iosapic + IOSAPIC_WINDOW); 70 } 71 72 static inline void 73 __ia64_native_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val) 74 { 75 writel(reg, iosapic + IOSAPIC_REG_SELECT); 76 writel(val, iosapic + IOSAPIC_WINDOW); 77 } 78 79 static inline void iosapic_eoi(char __iomem *iosapic, u32 vector) 80 { 81 writel(vector, iosapic + IOSAPIC_EOI); 82 } 83 84 extern void __init iosapic_system_init (int pcat_compat); 85 extern int iosapic_init (unsigned long address, unsigned int gsi_base); 86 extern int iosapic_remove (unsigned int gsi_base); 87 extern int gsi_to_irq (unsigned int gsi); 88 extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity, 89 unsigned long trigger); 90 extern void iosapic_unregister_intr (unsigned int irq); 91 extern void iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi, 92 unsigned long polarity, 93 unsigned long trigger); 94 extern int __init iosapic_register_platform_intr (u32 int_type, 95 unsigned int gsi, 96 int pmi_vector, 97 u16 eid, u16 id, 98 unsigned long polarity, 99 unsigned long trigger); 100 101 #ifdef CONFIG_NUMA 102 extern void map_iosapic_to_node (unsigned int, int); 103 #endif 104 105 # endif /* !__ASSEMBLY__ */ 106 #endif /* __ASM_IA64_IOSAPIC_H */ 107