LXR qemu/include/hw/ppc/spapr

   1/*
   2 * QEMU PowerPC sPAPR IRQ backend definitions
   3 *
   4 * Copyright (c) 2018, IBM Corporation.
   5 *
   6 * This code is licensed under the GPL version 2 or later. See the
   7 * COPYING file in the top-level directory.
   8 */
   9
  10#ifndef HW_SPAPR_IRQ_H
  11#define HW_SPAPR_IRQ_H
  12
  13#include "target/ppc/cpu-qom.h"
  14
  15/*
  16 * IRQ range offsets per device type
  17 */
  18#define SPAPR_IRQ_IPI        0x0
  19
  20#define SPAPR_XIRQ_BASE      XICS_IRQ_BASE /* 0x1000 */
  21#define SPAPR_IRQ_EPOW       (SPAPR_XIRQ_BASE + 0x0000)
  22#define SPAPR_IRQ_HOTPLUG    (SPAPR_XIRQ_BASE + 0x0001)
  23#define SPAPR_IRQ_VIO        (SPAPR_XIRQ_BASE + 0x0100)  /* 256 VIO devices */
  24#define SPAPR_IRQ_PCI_LSI    (SPAPR_XIRQ_BASE + 0x0200)  /* 32+ PHBs devices */
  25
  26/* Offset of the dynamic range covered by the bitmap allocator */
  27#define SPAPR_IRQ_MSI        (SPAPR_XIRQ_BASE + 0x0300)
  28
  29#define SPAPR_NR_XIRQS       0x1000
  30
  31typedef struct SpaprMachineState SpaprMachineState;
  32
  33typedef struct SpaprInterruptController SpaprInterruptController;
  34
  35#define TYPE_SPAPR_INTC "spapr-interrupt-controller"
  36#define SPAPR_INTC(obj)                                     \
  37    INTERFACE_CHECK(SpaprInterruptController, (obj), TYPE_SPAPR_INTC)
  38#define SPAPR_INTC_CLASS(klass)                                     \
  39    OBJECT_CLASS_CHECK(SpaprInterruptControllerClass, (klass), TYPE_SPAPR_INTC)
  40#define SPAPR_INTC_GET_CLASS(obj)                                   \
  41    OBJECT_GET_CLASS(SpaprInterruptControllerClass, (obj), TYPE_SPAPR_INTC)
  42
  43typedef struct SpaprInterruptControllerClass {
  44    InterfaceClass parent;
  45
  46    int (*activate)(SpaprInterruptController *intc, Error **errp);
  47    void (*deactivate)(SpaprInterruptController *intc);
  48
  49    /*
  50     * These methods will typically be called on all intcs, active and
  51     * inactive
  52     */
  53    int (*cpu_intc_create)(SpaprInterruptController *intc,
  54                            PowerPCCPU *cpu, Error **errp);
  55    void (*cpu_intc_reset)(SpaprInterruptController *intc, PowerPCCPU *cpu);
  56    void (*cpu_intc_destroy)(SpaprInterruptController *intc, PowerPCCPU *cpu);
  57    int (*claim_irq)(SpaprInterruptController *intc, int irq, bool lsi,
  58                     Error **errp);
  59    void (*free_irq)(SpaprInterruptController *intc, int irq);
  60
  61    /* These methods should only be called on the active intc */
  62    void (*set_irq)(SpaprInterruptController *intc, int irq, int val);
  63    void (*print_info)(SpaprInterruptController *intc, Monitor *mon);
  64    void (*dt)(SpaprInterruptController *intc, uint32_t nr_servers,
  65               void *fdt, uint32_t phandle);
  66    int (*post_load)(SpaprInterruptController *intc, int version_id);
  67} SpaprInterruptControllerClass;
  68
  69void spapr_irq_update_active_intc(SpaprMachineState *spapr);
  70
  71int spapr_irq_cpu_intc_create(SpaprMachineState *spapr,
  72                              PowerPCCPU *cpu, Error **errp);
  73void spapr_irq_cpu_intc_reset(SpaprMachineState *spapr, PowerPCCPU *cpu);
  74void spapr_irq_cpu_intc_destroy(SpaprMachineState *spapr, PowerPCCPU *cpu);
  75void spapr_irq_print_info(SpaprMachineState *spapr, Monitor *mon);
  76void spapr_irq_dt(SpaprMachineState *spapr, uint32_t nr_servers,
  77                  void *fdt, uint32_t phandle);
  78
  79uint32_t spapr_irq_nr_msis(SpaprMachineState *spapr);
  80int spapr_irq_msi_alloc(SpaprMachineState *spapr, uint32_t num, bool align,
  81                        Error **errp);
  82void spapr_irq_msi_free(SpaprMachineState *spapr, int irq, uint32_t num);
  83
  84typedef struct SpaprIrq {
  85    bool        xics;
  86    bool        xive;
  87} SpaprIrq;
  88
  89extern SpaprIrq spapr_irq_xics;
  90extern SpaprIrq spapr_irq_xics_legacy;
  91extern SpaprIrq spapr_irq_xive;
  92extern SpaprIrq spapr_irq_dual;
  93
  94void spapr_irq_init(SpaprMachineState *spapr, Error **errp);
  95int spapr_irq_claim(SpaprMachineState *spapr, int irq, bool lsi, Error **errp);
  96void spapr_irq_free(SpaprMachineState *spapr, int irq, int num);
  97qemu_irq spapr_qirq(SpaprMachineState *spapr, int irq);
  98int spapr_irq_post_load(SpaprMachineState *spapr, int version_id);
  99void spapr_irq_reset(SpaprMachineState *spapr, Error **errp);
 100int spapr_irq_get_phandle(SpaprMachineState *spapr, void *fdt, Error **errp);
 101int spapr_irq_init_kvm(int (*fn)(SpaprInterruptController *, Error **),
 102                       SpaprInterruptController *intc,
 103                       Error **errp);
 104
 105/*
 106 * XICS legacy routines
 107 */
 108int spapr_irq_find(SpaprMachineState *spapr, int num, bool align, Error **errp);
 109#define spapr_irq_findone(spapr, errp) spapr_irq_find(spapr, 1, false, errp)
 110
 111#endif
 112