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Diffstat (limited to 'include/hw/intc/mips_gic.h')
| -rw-r--r-- | include/hw/intc/mips_gic.h | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/include/hw/intc/mips_gic.h b/include/hw/intc/mips_gic.h new file mode 100644 index 0000000000..dd6d44d731 --- /dev/null +++ b/include/hw/intc/mips_gic.h @@ -0,0 +1,216 @@ +/* + * 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. + * Copyright (C) 2016 Imagination Technologies + * + */ + +#ifndef _MIPS_GIC_H +#define _MIPS_GIC_H + +#include "hw/timer/mips_gictimer.h" +#include "cpu.h" +/* + * GIC Specific definitions + */ + +/* The MIPS default location */ +#define GIC_BASE_ADDR 0x1bdc0000ULL +#define GIC_ADDRSPACE_SZ (128 * 1024) + +/* Constants */ +#define GIC_POL_POS 1 +#define GIC_POL_NEG 0 +#define GIC_TRIG_EDGE 1 +#define GIC_TRIG_LEVEL 0 + +#define MSK(n) ((1ULL << (n)) - 1) + +/* GIC Address Space */ +#define SHARED_SECTION_OFS 0x0000 +#define SHARED_SECTION_SIZE 0x8000 +#define VP_LOCAL_SECTION_OFS 0x8000 +#define VP_LOCAL_SECTION_SIZE 0x4000 +#define VP_OTHER_SECTION_OFS 0xc000 +#define VP_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_COUNTERLO_OFS 0x0010 +#define GIC_SH_COUNTERHI_OFS 0x0014 +#define GIC_SH_REVISIONID_OFS 0x0020 + +/* Set/Clear corresponding bit in Edge Detect Register */ +#define GIC_SH_WEDGE_OFS 0x0280 + +/* Reset Mask - Disables Interrupt */ +#define GIC_SH_RMASK_OFS 0x0300 +#define GIC_SH_RMASK_LAST_OFS 0x031c + +/* Set Mask (WO) - Enables Interrupt */ +#define GIC_SH_SMASK_OFS 0x0380 +#define GIC_SH_SMASK_LAST_OFS 0x039c + +/* Global Interrupt Mask Register (RO) - Bit Set == Interrupt enabled */ +#define GIC_SH_MASK_OFS 0x0400 +#define GIC_SH_MASK_LAST_OFS 0x041c + +/* Pending Global Interrupts (RO) */ +#define GIC_SH_PEND_OFS 0x0480 +#define GIC_SH_PEND_LAST_OFS 0x049c + +#define GIC_SH_MAP0_PIN_OFS 0x0500 +#define GIC_SH_MAP255_PIN_OFS 0x08fc + +#define GIC_SH_MAP0_VP_OFS 0x2000 +#define GIC_SH_MAP255_VP_LAST_OFS 0x3fe4 + +/* Register Map for Local Section */ +#define GIC_VP_CTL_OFS 0x0000 +#define GIC_VP_PEND_OFS 0x0004 +#define GIC_VP_MASK_OFS 0x0008 +#define GIC_VP_RMASK_OFS 0x000c +#define GIC_VP_SMASK_OFS 0x0010 +#define GIC_VP_WD_MAP_OFS 0x0040 +#define GIC_VP_COMPARE_MAP_OFS 0x0044 +#define GIC_VP_TIMER_MAP_OFS 0x0048 +#define GIC_VP_FDC_MAP_OFS 0x004c +#define GIC_VP_PERFCTR_MAP_OFS 0x0050 +#define GIC_VP_SWINT0_MAP_OFS 0x0054 +#define GIC_VP_SWINT1_MAP_OFS 0x0058 +#define GIC_VP_OTHER_ADDR_OFS 0x0080 +#define GIC_VP_IDENT_OFS 0x0088 +#define GIC_VP_WD_CONFIG0_OFS 0x0090 +#define GIC_VP_WD_COUNT0_OFS 0x0094 +#define GIC_VP_WD_INITIAL0_OFS 0x0098 +#define GIC_VP_COMPARE_LO_OFS 0x00a0 +#define GIC_VP_COMPARE_HI_OFS 0x00a4 +#define GIC_VL_BRK_GROUP 0x3080 + +/* User-Mode Visible Section Register */ +/* Read-only alias for GIC Shared CounterLo */ +#define GIC_USER_MODE_COUNTERLO 0x0000 +/* Read-only alias for GIC Shared CounterHi */ +#define GIC_USER_MODE_COUNTERHI 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_PVPS_SHF 0 +#define GIC_SH_CONFIG_PVPS_MSK (MSK(8) << GIC_SH_CONFIG_NUMVPS_SHF) + +#define GIC_SH_WEDGE_RW_SHF 31 +#define GIC_SH_WEDGE_RW_MSK (MSK(1) << GIC_SH_WEDGE_RW_SHF) + +#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) +#define GIC_MAP_TO_PIN_REG_MSK \ + (GIC_MAP_TO_PIN_MSK | GIC_MAP_TO_NMI_MSK | GIC_MAP_TO_YQ_MSK | GIC_MAP_MSK) + +/* GIC_VP_CTL Masks */ +#define GIC_VP_CTL_FDC_RTBL_SHF 4 +#define GIC_VP_CTL_FDC_RTBL_MSK (MSK(1) << GIC_VP_CTL_FDC_RTBL_SHF) +#define GIC_VP_CTL_SWINT_RTBL_SHF 3 +#define GIC_VP_CTL_SWINT_RTBL_MSK (MSK(1) << GIC_VP_CTL_SWINT_RTBL_SHF) +#define GIC_VP_CTL_PERFCNT_RTBL_SHF 2 +#define GIC_VP_CTL_PERFCNT_RTBL_MSK (MSK(1) << GIC_VP_CTL_PERFCNT_RTBL_SHF) +#define GIC_VP_CTL_TIMER_RTBL_SHF 1 +#define GIC_VP_CTL_TIMER_RTBL_MSK (MSK(1) << GIC_VP_CTL_TIMER_RTBL_SHF) +#define GIC_VP_CTL_EIC_MODE_SHF 0 +#define GIC_VP_CTL_EIC_MODE_MSK (MSK(1) << GIC_VP_CTL_EIC_MODE_SHF) + +/* GIC_VP_MASK Masks */ +#define GIC_VP_MASK_FDC_SHF 6 +#define GIC_VP_MASK_FDC_MSK (MSK(1) << GIC_VP_MASK_FDC_SHF) +#define GIC_VP_MASK_SWINT1_SHF 5 +#define GIC_VP_MASK_SWINT1_MSK (MSK(1) << GIC_VP_MASK_SWINT1_SHF) +#define GIC_VP_MASK_SWINT0_SHF 4 +#define GIC_VP_MASK_SWINT0_MSK (MSK(1) << GIC_VP_MASK_SWINT0_SHF) +#define GIC_VP_MASK_PERFCNT_SHF 3 +#define GIC_VP_MASK_PERFCNT_MSK (MSK(1) << GIC_VP_MASK_PERFCNT_SHF) +#define GIC_VP_MASK_TIMER_SHF 2 +#define GIC_VP_MASK_TIMER_MSK (MSK(1) << GIC_VP_MASK_TIMER_SHF) +#define GIC_VP_MASK_CMP_SHF 1 +#define GIC_VP_MASK_CMP_MSK (MSK(1) << GIC_VP_MASK_CMP_SHF) +#define GIC_VP_MASK_WD_SHF 0 +#define GIC_VP_MASK_WD_MSK (MSK(1) << GIC_VP_MASK_WD_SHF) +#define GIC_VP_SET_RESET_MSK (MSK(7) << GIC_VP_MASK_WD_SHF) + +#define GIC_CPU_INT_MAX 5 /* Core Interrupt 7 */ +#define GIC_CPU_PIN_OFFSET 2 + +/* Local GIC interrupts. */ +#define GIC_NUM_LOCAL_INTRS 7 +#define GIC_LOCAL_INT_FDC 6 /* CPU fast debug channel */ +#define GIC_LOCAL_INT_SWINT1 5 /* CPU software interrupt 1 */ +#define GIC_LOCAL_INT_SWINT0 4 /* CPU software interrupt 0 */ +#define GIC_LOCAL_INT_PERFCTR 3 /* CPU performance counter */ +#define GIC_LOCAL_INT_TIMER 2 /* CPU timer interrupt */ +#define GIC_LOCAL_INT_COMPARE 1 /* GIC count and compare timer */ +#define GIC_LOCAL_INT_WD 0 /* GIC watchdog */ + +#define TYPE_MIPS_GIC "mips-gic" +#define MIPS_GIC(obj) OBJECT_CHECK(MIPSGICState, (obj), TYPE_MIPS_GIC) + +/* Support up to 32 VPs and 256 IRQs */ +#define GIC_MAX_VPS 32 +#define GIC_MAX_INTRS 256 + +typedef struct MIPSGICState MIPSGICState; +typedef struct MIPSGICIRQState MIPSGICIRQState; +typedef struct MIPSGICVPState MIPSGICVPState; + +struct MIPSGICIRQState { + uint8_t enabled; + uint8_t pending; + uint32_t map_pin; + int32_t map_vp; + qemu_irq irq; +}; + +struct MIPSGICVPState { + uint32_t ctl; + uint32_t pend; + uint32_t mask; + uint32_t compare_map; + uint32_t other_addr; + CPUMIPSState *env; +}; + +struct MIPSGICState { + SysBusDevice parent_obj; + MemoryRegion mr; + + /* Shared Section Registers */ + uint32_t sh_config; + MIPSGICIRQState *irq_state; + + /* VP Local/Other Section Registers */ + MIPSGICVPState *vps; + + /* GIC VP Timer */ + MIPSGICTimerState *gic_timer; + + int32_t num_vps; + int32_t num_irq; +}; + +#endif /* _MIPS_GIC_H */ |