include/linux/irqchip/arm-gic.h

   1 /*
   2  *  include/linux/irqchip/arm-gic.h
   3  *
   4  *  Copyright (C) 2002 ARM Limited, All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #ifndef __LINUX_IRQCHIP_ARM_GIC_H
  11 #define __LINUX_IRQCHIP_ARM_GIC_H
  12
  13 #define GIC_CPU_CTRL                    0x00
  14 #define GIC_CPU_PRIMASK                 0x04
  15 #define GIC_CPU_BINPOINT                0x08
  16 #define GIC_CPU_INTACK                  0x0c
  17 #define GIC_CPU_EOI                     0x10
  18 #define GIC_CPU_RUNNINGPRI              0x14
  19 #define GIC_CPU_HIGHPRI                 0x18
  20 #define GIC_CPU_ALIAS_BINPOINT          0x1c
  21 #define GIC_CPU_ACTIVEPRIO              0xd0
  22 #define GIC_CPU_IDENT                   0xfc
  23 #define GIC_CPU_DEACTIVATE              0x1000
  24
  25 #define GICC_ENABLE                     0x1
  26 #define GICC_INT_PRI_THRESHOLD          0xf0
  27
  28 #define GIC_CPU_CTRL_EnableGrp0_SHIFT   0
  29 #define GIC_CPU_CTRL_EnableGrp0         (1 << GIC_CPU_CTRL_EnableGrp0_SHIFT)
  30 #define GIC_CPU_CTRL_EnableGrp1_SHIFT   1
  31 #define GIC_CPU_CTRL_EnableGrp1         (1 << GIC_CPU_CTRL_EnableGrp1_SHIFT)
  32 #define GIC_CPU_CTRL_AckCtl_SHIFT       2
  33 #define GIC_CPU_CTRL_AckCtl             (1 << GIC_CPU_CTRL_AckCtl_SHIFT)
  34 #define GIC_CPU_CTRL_FIQEn_SHIFT        3
  35 #define GIC_CPU_CTRL_FIQEn              (1 << GIC_CPU_CTRL_FIQEn_SHIFT)
  36 #define GIC_CPU_CTRL_CBPR_SHIFT         4
  37 #define GIC_CPU_CTRL_CBPR               (1 << GIC_CPU_CTRL_CBPR_SHIFT)
  38 #define GIC_CPU_CTRL_EOImodeNS_SHIFT    9
  39 #define GIC_CPU_CTRL_EOImodeNS          (1 << GIC_CPU_CTRL_EOImodeNS_SHIFT)
  40
  41 #define GICC_IAR_INT_ID_MASK            0x3ff
  42 #define GICC_INT_SPURIOUS               1023
  43 #define GICC_DIS_BYPASS_MASK            0x1e0
  44
  45 #define GIC_DIST_CTRL                   0x000
  46 #define GIC_DIST_CTR                    0x004
  47 #define GIC_DIST_IIDR                   0x008
  48 #define GIC_DIST_IGROUP                 0x080
  49 #define GIC_DIST_ENABLE_SET             0x100
  50 #define GIC_DIST_ENABLE_CLEAR           0x180
  51 #define GIC_DIST_PENDING_SET            0x200
  52 #define GIC_DIST_PENDING_CLEAR          0x280
  53 #define GIC_DIST_ACTIVE_SET             0x300
  54 #define GIC_DIST_ACTIVE_CLEAR           0x380
  55 #define GIC_DIST_PRI                    0x400
  56 #define GIC_DIST_TARGET                 0x800
  57 #define GIC_DIST_CONFIG                 0xc00
  58 #define GIC_DIST_SOFTINT                0xf00
  59 #define GIC_DIST_SGI_PENDING_CLEAR      0xf10
  60 #define GIC_DIST_SGI_PENDING_SET        0xf20
  61
  62 #define GICD_ENABLE                     0x1
  63 #define GICD_DISABLE                    0x0
  64 #define GICD_INT_ACTLOW_LVLTRIG         0x0
  65 #define GICD_INT_EN_CLR_X32             0xffffffff
  66 #define GICD_INT_EN_SET_SGI             0x0000ffff
  67 #define GICD_INT_EN_CLR_PPI             0xffff0000
  68
  69 #define GICD_IIDR_IMPLEMENTER_SHIFT     0
  70 #define GICD_IIDR_IMPLEMENTER_MASK      (0xfff << GICD_IIDR_IMPLEMENTER_SHIFT)
  71 #define GICD_IIDR_REVISION_SHIFT        12
  72 #define GICD_IIDR_REVISION_MASK         (0xf << GICD_IIDR_REVISION_SHIFT)
  73 #define GICD_IIDR_VARIANT_SHIFT         16
  74 #define GICD_IIDR_VARIANT_MASK          (0xf << GICD_IIDR_VARIANT_SHIFT)
  75 #define GICD_IIDR_PRODUCT_ID_SHIFT      24
  76 #define GICD_IIDR_PRODUCT_ID_MASK       (0xff << GICD_IIDR_PRODUCT_ID_SHIFT)
  77
  78
  79 #define GICH_HCR                        0x0
  80 #define GICH_VTR                        0x4
  81 #define GICH_VMCR                       0x8
  82 #define GICH_MISR                       0x10
  83 #define GICH_EISR0                      0x20
  84 #define GICH_EISR1                      0x24
  85 #define GICH_ELRSR0                     0x30
  86 #define GICH_ELRSR1                     0x34
  87 #define GICH_APR                        0xf0
  88 #define GICH_LR0                        0x100
  89
  90 #define GICH_HCR_EN                     (1 << 0)
  91 #define GICH_HCR_UIE                    (1 << 1)
  92 #define GICH_HCR_NPIE                   (1 << 3)
  93
  94 #define GICH_LR_VIRTUALID               (0x3ff << 0)
  95 #define GICH_LR_PHYSID_CPUID_SHIFT      (10)
  96 #define GICH_LR_PHYSID_CPUID            (0x3ff << GICH_LR_PHYSID_CPUID_SHIFT)
  97 #define GICH_LR_PRIORITY_SHIFT          23
  98 #define GICH_LR_STATE                   (3 << 28)
  99 #define GICH_LR_PENDING_BIT             (1 << 28)
 100 #define GICH_LR_ACTIVE_BIT              (1 << 29)
 101 #define GICH_LR_EOI                     (1 << 19)
 102 #define GICH_LR_GROUP1                  (1 << 30)
 103 #define GICH_LR_HW                      (1 << 31)
 104
 105 #define GICH_VMCR_ENABLE_GRP0_SHIFT     0
 106 #define GICH_VMCR_ENABLE_GRP0_MASK      (1 << GICH_VMCR_ENABLE_GRP0_SHIFT)
 107 #define GICH_VMCR_ENABLE_GRP1_SHIFT     1
 108 #define GICH_VMCR_ENABLE_GRP1_MASK      (1 << GICH_VMCR_ENABLE_GRP1_SHIFT)
 109 #define GICH_VMCR_ACK_CTL_SHIFT         2
 110 #define GICH_VMCR_ACK_CTL_MASK          (1 << GICH_VMCR_ACK_CTL_SHIFT)
 111 #define GICH_VMCR_FIQ_EN_SHIFT          3
 112 #define GICH_VMCR_FIQ_EN_MASK           (1 << GICH_VMCR_FIQ_EN_SHIFT)
 113 #define GICH_VMCR_CBPR_SHIFT            4
 114 #define GICH_VMCR_CBPR_MASK             (1 << GICH_VMCR_CBPR_SHIFT)
 115 #define GICH_VMCR_EOI_MODE_SHIFT        9
 116 #define GICH_VMCR_EOI_MODE_MASK         (1 << GICH_VMCR_EOI_MODE_SHIFT)
 117
 118 #define GICH_VMCR_PRIMASK_SHIFT         27
 119 #define GICH_VMCR_PRIMASK_MASK          (0x1f << GICH_VMCR_PRIMASK_SHIFT)
 120 #define GICH_VMCR_BINPOINT_SHIFT        21
 121 #define GICH_VMCR_BINPOINT_MASK         (0x7 << GICH_VMCR_BINPOINT_SHIFT)
 122 #define GICH_VMCR_ALIAS_BINPOINT_SHIFT  18
 123 #define GICH_VMCR_ALIAS_BINPOINT_MASK   (0x7 << GICH_VMCR_ALIAS_BINPOINT_SHIFT)
 124
 125 #define GICH_MISR_EOI                   (1 << 0)
 126 #define GICH_MISR_U                     (1 << 1)
 127
 128 #define GICV_PMR_PRIORITY_SHIFT         3
 129 #define GICV_PMR_PRIORITY_MASK          (0x1f << GICV_PMR_PRIORITY_SHIFT)
 130
 131 #ifndef __ASSEMBLY__
 132
 133 #include <linux/irqdomain.h>
 134
 135 struct device_node;
 136 struct gic_chip_data;
 137
 138 void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
 139 int gic_cpu_if_down(unsigned int gic_nr);
 140 void gic_cpu_save(struct gic_chip_data *gic);
 141 void gic_cpu_restore(struct gic_chip_data *gic);
 142 void gic_dist_save(struct gic_chip_data *gic);
 143 void gic_dist_restore(struct gic_chip_data *gic);
 144
 145 /*
 146  * Subdrivers that need some preparatory work can initialize their
 147  * chips and call this to register their GICs.
 148  */
 149 int gic_of_init(struct device_node *node, struct device_node *parent);
 150
 151 /*
 152  * Initialises and registers a non-root or child GIC chip. Memory for
 153  * the gic_chip_data structure is dynamically allocated.
 154  */
 155 int gic_of_init_child(struct device *dev, struct gic_chip_data **gic, int irq);
 156
 157 /*
 158  * Legacy platforms not converted to DT yet must use this to init
 159  * their GIC
 160  */
 161 void gic_init(void __iomem *dist , void __iomem *cpu);
 162
 163 int gicv2m_init(struct fwnode_handle *parent_handle,
 164                 struct irq_domain *parent);
 165
 166 void gic_send_sgi(unsigned int cpu_id, unsigned int irq);
 167 int gic_get_cpu_id(unsigned int cpu);
 168 void gic_migrate_target(unsigned int new_cpu_id);
 169 unsigned long gic_get_sgir_physaddr(void);
 170
 171 #endif /* __ASSEMBLY */
 172 #endif