/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2000, 07 MIPS Technologies, Inc. */ #ifndef __LINUX_IRQCHIP_MIPS_GIC_H #define __LINUX_IRQCHIP_MIPS_GIC_H #include #include #define GIC_MAX_INTRS 256 /* Constants */ #define GIC_POL_POS 1 #define GIC_POL_NEG 0 #define GIC_TRIG_EDGE 1 #define GIC_TRIG_LEVEL 0 #define GIC_TRIG_DUAL_ENABLE 1 #define GIC_TRIG_DUAL_DISABLE 0 #define MSK(n) ((1 << (n)) - 1) /* Accessors */ #define GIC_REG(segment, offset) (segment##_##SECTION_OFS + offset##_##OFS) /* GIC Address Space */ #define SHARED_SECTION_OFS 0x0000 #define SHARED_SECTION_SIZE 0x8000 #define VPE_LOCAL_SECTION_OFS 0x8000 #define VPE_LOCAL_SECTION_SIZE 0x4000 #define VPE_OTHER_SECTION_OFS 0xc000 #define VPE_OTHER_SECTION_SIZE 0x4000 #define USM_VISIBLE_SECTION_OFS 0x10000 #define USM_VISIBLE_SECTION_SIZE 0x10000 /* Register Map for Shared Section */ #define GIC_SH_CONFIG_OFS 0x0000 /* Shared Global Counter */ #define GIC_SH_COUNTER_31_00_OFS 0x0010 /* 64-bit counter register for CM3 */ #define GIC_SH_COUNTER_OFS GIC_SH_COUNTER_31_00_OFS #define GIC_SH_COUNTER_63_32_OFS 0x0014 #define GIC_SH_REVISIONID_OFS 0x0020 /* Convert an interrupt number to a byte offset/bit for multi-word registers */ #define GIC_INTR_OFS(intr) ({ \ unsigned bits = mips_cm_is64 ? 64 : 32; \ unsigned reg_idx = (intr) / bits; \ unsigned reg_width = bits / 8; \ \ reg_idx * reg_width; \ }) #define GIC_INTR_BIT(intr) ((intr) % (mips_cm_is64 ? 64 : 32)) /* Polarity : Reset Value is always 0 */ #define GIC_SH_SET_POLARITY_OFS 0x0100 /* Triggering : Reset Value is always 0 */ #define GIC_SH_SET_TRIGGER_OFS 0x0180 /* Dual edge triggering : Reset Value is always 0 */ #define GIC_SH_SET_DUAL_OFS 0x0200 /* Set/Clear corresponding bit in Edge Detect Register */ #define GIC_SH_WEDGE_OFS 0x0280 /* Mask manipulation */ #define GIC_SH_RMASK_OFS 0x0300 #define GIC_SH_SMASK_OFS 0x0380 /* Global Interrupt Mask Register (RO) - Bit Set == Interrupt enabled */ #define GIC_SH_MASK_OFS 0x0400 /* Pending Global Interrupts (RO) */ #define GIC_SH_PEND_OFS 0x0480 /* Maps Interrupt X to a Pin */ #define GIC_SH_INTR_MAP_TO_PIN_BASE_OFS 0x0500 #define GIC_SH_MAP_TO_PIN(intr) (4 * (intr)) /* Maps Interrupt X to a VPE */ #define GIC_SH_INTR_MAP_TO_VPE_BASE_OFS 0x2000 #define GIC_SH_MAP_TO_VPE_REG_OFF(intr, vpe) \ ((32 * (intr)) + (((vpe) / 32) * 4)) #define GIC_SH_MAP_TO_VPE_REG_BIT(vpe) (1 << ((vpe) % 32)) /* Register Map for Local Section */ #define GIC_VPE_CTL_OFS 0x0000 #define GIC_VPE_PEND_OFS 0x0004 #define GIC_VPE_MASK_OFS 0x0008 #define GIC_VPE_RMASK_OFS 0x000c #define GIC_VPE_SMASK_OFS 0x0010 #define GIC_VPE_WD_MAP_OFS 0x0040 #define GIC_VPE_COMPARE_MAP_OFS 0x0044 #define GIC_VPE_TIMER_MAP_OFS 0x0048 #define GIC_VPE_FDC_MAP_OFS 0x004c #define GIC_VPE_PERFCTR_MAP_OFS 0x0050 #define GIC_VPE_SWINT0_MAP_OFS 0x0054 #define GIC_VPE_SWINT1_MAP_OFS 0x0058 #define GIC_VPE_OTHER_ADDR_OFS 0x0080 #define GIC_VP_IDENT_OFS 0x0088 #define GIC_VPE_WD_CONFIG0_OFS 0x0090 #define GIC_VPE_WD_COUNT0_OFS 0x0094 #define GIC_VPE_WD_INITIAL0_OFS 0x0098 #define GIC_VPE_COMPARE_LO_OFS 0x00a0 /* 64-bit Compare register on CM3 */ #define GIC_VPE_COMPARE_OFS GIC_VPE_COMPARE_LO_OFS #define GIC_VPE_COMPARE_HI_OFS 0x00a4 #define GIC_VPE_EIC_SHADOW_SET_BASE_OFS 0x0100 #define GIC_VPE_EIC_SS(intr) (4 * (intr)) #define GIC_VPE_EIC_VEC_BASE_OFS 0x0800 #define GIC_VPE_EIC_VEC(intr) (4 * (intr)) #define GIC_VPE_TENABLE_NMI_OFS 0x1000 #define GIC_VPE_TENABLE_YQ_OFS 0x1004 #define GIC_VPE_TENABLE_INT_31_0_OFS 0x1080 #define GIC_VPE_TENABLE_INT_63_32_OFS 0x1084 /* User Mode Visible Section Register Map */ #define GIC_UMV_SH_COUNTER_31_00_OFS 0x0000 #define GIC_UMV_SH_COUNTER_63_32_OFS 0x0004 /* Masks */ #define GIC_SH_CONFIG_COUNTSTOP_SHF 28 #define GIC_SH_CONFIG_COUNTSTOP_MSK (MSK(1) << GIC_SH_CONFIG_COUNTSTOP_SHF) #define GIC_SH_CONFIG_COUNTBITS_SHF 24 #define GIC_SH_CONFIG_COUNTBITS_MSK (MSK(4) << GIC_SH_CONFIG_COUNTBITS_SHF) #define GIC_SH_CONFIG_NUMINTRS_SHF 16 #define GIC_SH_CONFIG_NUMINTRS_MSK (MSK(8) << GIC_SH_CONFIG_NUMINTRS_SHF) #define GIC_SH_CONFIG_NUMVPES_SHF 0 #define GIC_SH_CONFIG_NUMVPES_MSK (MSK(8) << GIC_SH_CONFIG_NUMVPES_SHF) #define GIC_SH_WEDGE_SET(intr) ((intr) | (0x1 << 31)) #define GIC_SH_WEDGE_CLR(intr) ((intr) & ~(0x1 << 31)) #define GIC_MAP_TO_PIN_SHF 31 #define GIC_MAP_TO_PIN_MSK (MSK(1) << GIC_MAP_TO_PIN_SHF) #define GIC_MAP_TO_NMI_SHF 30 #define GIC_MAP_TO_NMI_MSK (MSK(1) << GIC_MAP_TO_NMI_SHF) #define GIC_MAP_TO_YQ_SHF 29 #define GIC_MAP_TO_YQ_MSK (MSK(1) << GIC_MAP_TO_YQ_SHF) #define GIC_MAP_SHF 0 #define GIC_MAP_MSK (MSK(6) << GIC_MAP_SHF) /* GIC_VPE_CTL Masks */ #define GIC_VPE_CTL_FDC_RTBL_SHF 4 #define GIC_VPE_CTL_FDC_RTBL_MSK (MSK(1) << GIC_VPE_CTL_FDC_RTBL_SHF) #define GIC_VPE_CTL_SWINT_RTBL_SHF 3 #define GIC_VPE_CTL_SWINT_RTBL_MSK (MSK(1) << GIC_VPE_CTL_SWINT_RTBL_SHF) #define GIC_VPE_CTL_PERFCNT_RTBL_SHF 2 #define GIC_VPE_CTL_PERFCNT_RTBL_MSK (MSK(1) << GIC_VPE_CTL_PERFCNT_RTBL_SHF) #define GIC_VPE_CTL_TIMER_RTBL_SHF 1 #define GIC_VPE_CTL_TIMER_RTBL_MSK (MSK(1) << GIC_VPE_CTL_TIMER_RTBL_SHF) #define GIC_VPE_CTL_EIC_MODE_SHF 0 #define GIC_VPE_CTL_EIC_MODE_MSK (MSK(1) << GIC_VPE_CTL_EIC_MODE_SHF) /* GIC_VPE_PEND Masks */ #define GIC_VPE_PEND_WD_SHF 0 #define GIC_VPE_PEND_WD_MSK (MSK(1) << GIC_VPE_PEND_WD_SHF) #define GIC_VPE_PEND_CMP_SHF 1 #define GIC_VPE_PEND_CMP_MSK (MSK(1) << GIC_VPE_PEND_CMP_SHF) #define GIC_VPE_PEND_TIMER_SHF 2 #define GIC_VPE_PEND_TIMER_MSK (MSK(1) << GIC_VPE_PEND_TIMER_SHF) #define GIC_VPE_PEND_PERFCOUNT_SHF 3 #define GIC_VPE_PEND_PERFCOUNT_MSK (MSK(1) << GIC_VPE_PEND_PERFCOUNT_SHF) #define GIC_VPE_PEND_SWINT0_SHF 4 #define GIC_VPE_PEND_SWINT0_MSK (MSK(1) << GIC_VPE_PEND_SWINT0_SHF) #define GIC_VPE_PEND_SWINT1_SHF 5 #define GIC_VPE_PEND_SWINT1_MSK (MSK(1) << GIC_VPE_PEND_SWINT1_SHF) #define GIC_VPE_PEND_FDC_SHF 6 #define GIC_VPE_PEND_FDC_MSK (MSK(1) << GIC_VPE_PEND_FDC_SHF) /* GIC_VPE_RMASK Masks */ #define GIC_VPE_RMASK_WD_SHF 0 #define GIC_VPE_RMASK_WD_MSK (MSK(1) << GIC_VPE_RMASK_WD_SHF) #define GIC_VPE_RMASK_CMP_SHF 1 #define GIC_VPE_RMASK_CMP_MSK (MSK(1) << GIC_VPE_RMASK_CMP_SHF) #define GIC_VPE_RMASK_TIMER_SHF 2 #define GIC_VPE_RMASK_TIMER_MSK (MSK(1) << GIC_VPE_RMASK_TIMER_SHF) #define GIC_VPE_RMASK_PERFCNT_SHF 3 #define GIC_VPE_RMASK_PERFCNT_MSK (MSK(1) << GIC_VPE_RMASK_PERFCNT_SHF) #define GIC_VPE_RMASK_SWINT0_SHF 4 #define GIC_VPE_RMASK_SWINT0_MSK (MSK(1) << GIC_VPE_RMASK_SWINT0_SHF) #define GIC_VPE_RMASK_SWINT1_SHF 5 #define GIC_VPE_RMASK_SWINT1_MSK (MSK(1) << GIC_VPE_RMASK_SWINT1_SHF) #define GIC_VPE_RMASK_FDC_SHF 6 #define GIC_VPE_RMASK_FDC_MSK (MSK(1) << GIC_VPE_RMASK_FDC_SHF) /* GIC_VPE_SMASK Masks */ #define GIC_VPE_SMASK_WD_SHF 0 #define GIC_VPE_SMASK_WD_MSK (MSK(1) << GIC_VPE_SMASK_WD_SHF) #define GIC_VPE_SMASK_CMP_SHF 1 #define GIC_VPE_SMASK_CMP_MSK (MSK(1) << GIC_VPE_SMASK_CMP_SHF) #define GIC_VPE_SMASK_TIMER_SHF 2 #define GIC_VPE_SMASK_TIMER_MSK (MSK(1) << GIC_VPE_SMASK_TIMER_SHF) #define GIC_VPE_SMASK_PERFCNT_SHF 3 #define GIC_VPE_SMASK_PERFCNT_MSK (MSK(1) << GIC_VPE_SMASK_PERFCNT_SHF) #define GIC_VPE_SMASK_SWINT0_SHF 4 #define GIC_VPE_SMASK_SWINT0_MSK (MSK(1) << GIC_VPE_SMASK_SWINT0_SHF) #define GIC_VPE_SMASK_SWINT1_SHF 5 #define GIC_VPE_SMASK_SWINT1_MSK (MSK(1) << GIC_VPE_SMASK_SWINT1_SHF) #define GIC_VPE_SMASK_FDC_SHF 6 #define GIC_VPE_SMASK_FDC_MSK (MSK(1) << GIC_VPE_SMASK_FDC_SHF) /* GIC_VP_IDENT fields */ #define GIC_VP_IDENT_VCNUM_SHF 0 #define GIC_VP_IDENT_VCNUM_MSK (MSK(6) << GIC_VP_IDENT_VCNUM_SHF) /* GIC nomenclature for Core Interrupt Pins. */ #define GIC_CPU_INT0 0 /* Core Interrupt 2 */ #define GIC_CPU_INT1 1 /* . */ #define GIC_CPU_INT2 2 /* . */ #define GIC_CPU_INT3 3 /* . */ #define GIC_CPU_INT4 4 /* . */ #define GIC_CPU_INT5 5 /* Core Interrupt 7 */ /* Add 2 to convert GIC CPU pin to core interrupt */ #define GIC_CPU_PIN_OFFSET 2 /* Add 2 to convert non-EIC hardware interrupt to EIC vector number. */ #define GIC_CPU_TO_VEC_OFFSET 2 /* Mapped interrupt to pin X, then GIC will generate the vector (X+1). */ #define GIC_PIN_TO_VEC_OFFSET 1 /* Local GIC interrupts. */ #define GIC_LOCAL_INT_WD 0 /* GIC watchdog */ #define GIC_LOCAL_INT_COMPARE 1 /* GIC count and compare timer */ #define GIC_LOCAL_INT_TIMER 2 /* CPU timer interrupt */ #define GIC_LOCAL_INT_PERFCTR 3 /* CPU performance counter */ #define GIC_LOCAL_INT_SWINT0 4 /* CPU software interrupt 0 */ #define GIC_LOCAL_INT_SWINT1 5 /* CPU software interrupt 1 */ #define GIC_LOCAL_INT_FDC 6 /* CPU fast debug channel */ #define GIC_NUM_LOCAL_INTRS 7 /* Convert between local/shared IRQ number and GIC HW IRQ number. */ #define GIC_LOCAL_HWIRQ_BASE 0 #define GIC_LOCAL_TO_HWIRQ(x) (GIC_LOCAL_HWIRQ_BASE + (x)) #define GIC_HWIRQ_TO_LOCAL(x) ((x) - GIC_LOCAL_HWIRQ_BASE) #define GIC_SHARED_HWIRQ_BASE GIC_NUM_LOCAL_INTRS #define GIC_SHARED_TO_HWIRQ(x) (GIC_SHARED_HWIRQ_BASE + (x)) #define GIC_HWIRQ_TO_SHARED(x) ((x) - GIC_SHARED_HWIRQ_BASE) #ifdef CONFIG_MIPS_GIC extern unsigned int gic_present; extern void gic_init(unsigned long gic_base_addr, unsigned long gic_addrspace_size, unsigned int cpu_vec, unsigned int irqbase); extern void gic_clocksource_init(unsigned int); extern cycle_t gic_read_count(void); extern unsigned int gic_get_count_width(void); extern cycle_t gic_read_compare(void); extern void gic_write_compare(cycle_t cnt); extern void gic_write_cpu_compare(cycle_t cnt, int cpu); extern void gic_start_count(void); extern void gic_stop_count(void); extern int gic_get_c0_compare_int(void); extern int gic_get_c0_perfcount_int(void); extern int gic_get_c0_fdc_int(void); extern int gic_get_usm_range(struct resource *gic_usm_res); #else /* CONFIG_MIPS_GIC */ #define gic_present 0 static inline int gic_get_usm_range(struct resource *gic_usm_res) { /* Shouldn't be called. */ return -1; } #endif /* CONFIG_MIPS_GIC */ /** * gic_read_local_vp_id() - read the local VPs VCNUM * * Read the VCNUM of the local VP from the GIC_VP_IDENT register and * return it to the caller. This ID should be used to refer to the VP * via the GICs VP-other region, or when calculating an offset to a * bit representing the VP in interrupt masks. * * Return: The VCNUM value for the local VP. */ extern unsigned gic_read_local_vp_id(void); #endif /* __LINUX_IRQCHIP_MIPS_GIC_H */