include/linux/irqchip/arm-gic.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  include/linux/irqchip/arm-gic.h
   4  *
   5  *  Copyright (C) 2002 ARM Limited, All Rights Reserved.
   6  */
   7 #ifndef __LINUX_IRQCHIP_ARM_GIC_H
   8 #define __LINUX_IRQCHIP_ARM_GIC_H
   9
  10 #define GIC_CPU_CTRL                    0x00
  11 #define GIC_CPU_PRIMASK                 0x04
  12 #define GIC_CPU_BINPOINT                0x08
  13 #define GIC_CPU_INTACK                  0x0c
  14 #define GIC_CPU_EOI                     0x10
  15 #define GIC_CPU_RUNNINGPRI              0x14
  16 #define GIC_CPU_HIGHPRI                 0x18
  17 #define GIC_CPU_ALIAS_BINPOINT          0x1c
  18 #define GIC_CPU_ACTIVEPRIO              0xd0
  19 #define GIC_CPU_IDENT                   0xfc
  20 #define GIC_CPU_DEACTIVATE              0x1000
  21
  22 #define GICC_ENABLE                     0x1
  23 #define GICC_INT_PRI_THRESHOLD          0xf0
  24
  25 #define GIC_CPU_CTRL_EnableGrp0_SHIFT   0
  26 #define GIC_CPU_CTRL_EnableGrp0         (1 << GIC_CPU_CTRL_EnableGrp0_SHIFT)
  27 #define GIC_CPU_CTRL_EnableGrp1_SHIFT   1
  28 #define GIC_CPU_CTRL_EnableGrp1         (1 << GIC_CPU_CTRL_EnableGrp1_SHIFT)
  29 #define GIC_CPU_CTRL_AckCtl_SHIFT       2
  30 #define GIC_CPU_CTRL_AckCtl             (1 << GIC_CPU_CTRL_AckCtl_SHIFT)
  31 #define GIC_CPU_CTRL_FIQEn_SHIFT        3
  32 #define GIC_CPU_CTRL_FIQEn              (1 << GIC_CPU_CTRL_FIQEn_SHIFT)
  33 #define GIC_CPU_CTRL_CBPR_SHIFT         4
  34 #define GIC_CPU_CTRL_CBPR               (1 << GIC_CPU_CTRL_CBPR_SHIFT)
  35 #define GIC_CPU_CTRL_EOImodeNS_SHIFT    9
  36 #define GIC_CPU_CTRL_EOImodeNS          (1 << GIC_CPU_CTRL_EOImodeNS_SHIFT)
  37
  38 #define GICC_IAR_INT_ID_MASK            0x3ff
  39 #define GICC_INT_SPURIOUS               1023
  40 #define GICC_DIS_BYPASS_MASK            0x1e0
  41
  42 #define GIC_DIST_CTRL                   0x000
  43 #define GIC_DIST_CTR                    0x004
  44 #define GIC_DIST_IIDR                   0x008
  45 #define GIC_DIST_IGROUP                 0x080
  46 #define GIC_DIST_ENABLE_SET             0x100
  47 #define GIC_DIST_ENABLE_CLEAR           0x180
  48 #define GIC_DIST_PENDING_SET            0x200
  49 #define GIC_DIST_PENDING_CLEAR          0x280
  50 #define GIC_DIST_ACTIVE_SET             0x300
  51 #define GIC_DIST_ACTIVE_CLEAR           0x380
  52 #define GIC_DIST_PRI                    0x400
  53 #define GIC_DIST_TARGET                 0x800
  54 #define GIC_DIST_CONFIG                 0xc00
  55 #define GIC_DIST_SOFTINT                0xf00
  56 #define GIC_DIST_SGI_PENDING_CLEAR      0xf10
  57 #define GIC_DIST_SGI_PENDING_SET        0xf20
  58
  59 #define GICD_ENABLE                     0x1
  60 #define GICD_DISABLE                    0x0
  61 #define GICD_INT_ACTLOW_LVLTRIG         0x0
  62 #define GICD_INT_EN_CLR_X32             0xffffffff
  63 #define GICD_INT_EN_SET_SGI             0x0000ffff
  64 #define GICD_INT_EN_CLR_PPI             0xffff0000
  65
  66 #define GICD_IIDR_IMPLEMENTER_SHIFT     0
  67 #define GICD_IIDR_IMPLEMENTER_MASK      (0xfff << GICD_IIDR_IMPLEMENTER_SHIFT)
  68 #define GICD_IIDR_REVISION_SHIFT        12
  69 #define GICD_IIDR_REVISION_MASK         (0xf << GICD_IIDR_REVISION_SHIFT)
  70 #define GICD_IIDR_VARIANT_SHIFT         16
  71 #define GICD_IIDR_VARIANT_MASK          (0xf << GICD_IIDR_VARIANT_SHIFT)
  72 #define GICD_IIDR_PRODUCT_ID_SHIFT      24
  73 #define GICD_IIDR_PRODUCT_ID_MASK       (0xff << GICD_IIDR_PRODUCT_ID_SHIFT)
  74
  75
  76 #define GICH_HCR                        0x0
  77 #define GICH_VTR                        0x4
  78 #define GICH_VMCR                       0x8
  79 #define GICH_MISR                       0x10
  80 #define GICH_EISR0                      0x20
  81 #define GICH_EISR1                      0x24
  82 #define GICH_ELRSR0                     0x30
  83 #define GICH_ELRSR1                     0x34
  84 #define GICH_APR                        0xf0
  85 #define GICH_LR0                        0x100
  86
  87 #define GICH_HCR_EN                     (1 << 0)
  88 #define GICH_HCR_UIE                    (1 << 1)
  89 #define GICH_HCR_NPIE                   (1 << 3)
  90
  91 #define GICH_LR_VIRTUALID               (0x3ff << 0)
  92 #define GICH_LR_PHYSID_CPUID_SHIFT      (10)
  93 #define GICH_LR_PHYSID_CPUID            (0x3ff << GICH_LR_PHYSID_CPUID_SHIFT)
  94 #define GICH_LR_PRIORITY_SHIFT          23
  95 #define GICH_LR_STATE                   (3 << 28)
  96 #define GICH_LR_PENDING_BIT             (1 << 28)
  97 #define GICH_LR_ACTIVE_BIT              (1 << 29)
  98 #define GICH_LR_EOI                     (1 << 19)
  99 #define GICH_LR_GROUP1                  (1 << 30)
 100 #define GICH_LR_HW                      (1 << 31)
 101
 102 #define GICH_VMCR_ENABLE_GRP0_SHIFT     0
 103 #define GICH_VMCR_ENABLE_GRP0_MASK      (1 << GICH_VMCR_ENABLE_GRP0_SHIFT)
 104 #define GICH_VMCR_ENABLE_GRP1_SHIFT     1
 105 #define GICH_VMCR_ENABLE_GRP1_MASK      (1 << GICH_VMCR_ENABLE_GRP1_SHIFT)
 106 #define GICH_VMCR_ACK_CTL_SHIFT         2
 107 #define GICH_VMCR_ACK_CTL_MASK          (1 << GICH_VMCR_ACK_CTL_SHIFT)
 108 #define GICH_VMCR_FIQ_EN_SHIFT          3
 109 #define GICH_VMCR_FIQ_EN_MASK           (1 << GICH_VMCR_FIQ_EN_SHIFT)
 110 #define GICH_VMCR_CBPR_SHIFT            4
 111 #define GICH_VMCR_CBPR_MASK             (1 << GICH_VMCR_CBPR_SHIFT)
 112 #define GICH_VMCR_EOI_MODE_SHIFT        9
 113 #define GICH_VMCR_EOI_MODE_MASK         (1 << GICH_VMCR_EOI_MODE_SHIFT)
 114
 115 #define GICH_VMCR_PRIMASK_SHIFT         27
 116 #define GICH_VMCR_PRIMASK_MASK          (0x1f << GICH_VMCR_PRIMASK_SHIFT)
 117 #define GICH_VMCR_BINPOINT_SHIFT        21
 118 #define GICH_VMCR_BINPOINT_MASK         (0x7 << GICH_VMCR_BINPOINT_SHIFT)
 119 #define GICH_VMCR_ALIAS_BINPOINT_SHIFT  18
 120 #define GICH_VMCR_ALIAS_BINPOINT_MASK   (0x7 << GICH_VMCR_ALIAS_BINPOINT_SHIFT)
 121
 122 #define GICH_MISR_EOI                   (1 << 0)
 123 #define GICH_MISR_U                     (1 << 1)
 124
 125 #define GICV_PMR_PRIORITY_SHIFT         3
 126 #define GICV_PMR_PRIORITY_MASK          (0x1f << GICV_PMR_PRIORITY_SHIFT)
 127
 128 #ifndef __ASSEMBLY__
 129
 130 #include <linux/irqdomain.h>
 131
 132 struct device_node;
 133 struct gic_chip_data;
 134
 135 void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
 136 int gic_cpu_if_down(unsigned int gic_nr);
 137 void gic_cpu_save(struct gic_chip_data *gic);
 138 void gic_cpu_restore(struct gic_chip_data *gic);
 139 void gic_dist_save(struct gic_chip_data *gic);
 140 void gic_dist_restore(struct gic_chip_data *gic);
 141
 142 /*
 143  * Subdrivers that need some preparatory work can initialize their
 144  * chips and call this to register their GICs.
 145  */
 146 int gic_of_init(struct device_node *node, struct device_node *parent);
 147
 148 /*
 149  * Initialises and registers a non-root or child GIC chip. Memory for
 150  * the gic_chip_data structure is dynamically allocated.
 151  */
 152 int gic_of_init_child(struct device *dev, struct gic_chip_data **gic, int irq);
 153
 154 /*
 155  * Legacy platforms not converted to DT yet must use this to init
 156  * their GIC
 157  */
 158 void gic_init(void __iomem *dist , void __iomem *cpu);
 159
 160 int gicv2m_init(struct fwnode_handle *parent_handle,
 161                 struct irq_domain *parent);
 162
 163 void gic_send_sgi(unsigned int cpu_id, unsigned int irq);
 164 int gic_get_cpu_id(unsigned int cpu);
 165 void gic_migrate_target(unsigned int new_cpu_id);
 166 unsigned long gic_get_sgir_physaddr(void);
 167
 168 #endif /* __ASSEMBLY */
 169 #endif