1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #include <linux/platform_device.h> 3 4 #include <asm/cpu_type.h> 5 6 struct irq_bucket { 7 struct irq_bucket *next; 8 unsigned int real_irq; 9 unsigned int irq; 10 unsigned int pil; 11 }; 12 13 #define SUN4M_HARD_INT(x) (0x000000001 << (x)) 14 #define SUN4M_SOFT_INT(x) (0x000010000 << (x)) 15 16 #define SUN4D_MAX_BOARD 10 17 #define SUN4D_MAX_IRQ ((SUN4D_MAX_BOARD + 2) << 5) 18 19 /* Map between the irq identifier used in hw to the 20 * irq_bucket. The map is sufficient large to hold 21 * the sun4d hw identifiers. 22 */ 23 extern struct irq_bucket *irq_map[SUN4D_MAX_IRQ]; 24 25 26 /* sun4m specific type definitions */ 27 28 /* This maps direct to CPU specific interrupt registers */ 29 struct sun4m_irq_percpu { 30 u32 pending; 31 u32 clear; 32 u32 set; 33 }; 34 35 /* This maps direct to global interrupt registers */ 36 struct sun4m_irq_global { 37 u32 pending; 38 u32 mask; 39 u32 mask_clear; 40 u32 mask_set; 41 u32 interrupt_target; 42 }; 43 44 extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS]; 45 extern struct sun4m_irq_global __iomem *sun4m_irq_global; 46 47 /* The following definitions describe the individual platform features: */ 48 #define FEAT_L10_CLOCKSOURCE (1 << 0) /* L10 timer is used as a clocksource */ 49 #define FEAT_L10_CLOCKEVENT (1 << 1) /* L10 timer is used as a clockevent */ 50 #define FEAT_L14_ONESHOT (1 << 2) /* L14 timer clockevent can oneshot */ 51 52 /* 53 * Platform specific configuration 54 * The individual platforms assign their platform 55 * specifics in their init functions. 56 */ 57 struct sparc_config { 58 void (*init_timers)(void); 59 unsigned int (*build_device_irq)(struct platform_device *op, 60 unsigned int real_irq); 61 62 /* generic clockevent features - see FEAT_* above */ 63 int features; 64 65 /* clock rate used for clock event timer */ 66 int clock_rate; 67 68 /* one period for clock source timer */ 69 unsigned int cs_period; 70 71 /* function to obtain offsett for cs period */ 72 unsigned int (*get_cycles_offset)(void); 73 74 void (*clear_clock_irq)(void); 75 void (*load_profile_irq)(int cpu, unsigned int limit); 76 }; 77 extern struct sparc_config sparc_config; 78 79 unsigned int irq_alloc(unsigned int real_irq, unsigned int pil); 80 void irq_link(unsigned int irq); 81 void irq_unlink(unsigned int irq); 82 void handler_irq(unsigned int pil, struct pt_regs *regs); 83 84 unsigned long leon_get_irqmask(unsigned int irq); 85 86 /* irq_32.c */ 87 void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs); 88 89 /* sun4m_irq.c */ 90 void sun4m_nmi(struct pt_regs *regs); 91 92 /* sun4d_irq.c */ 93 void sun4d_handler_irq(unsigned int pil, struct pt_regs *regs); 94 95 #ifdef CONFIG_SMP 96 97 /* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */ 98 #define SUN4D_IPI_IRQ 13 99 100 void sun4d_ipi_interrupt(void); 101 102 #endif 103