include/hw/ppc/spapr_irq.h

   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 #define SPAPR_NR_MSIS        (SPAPR_XIRQ_BASE + SPAPR_NR_XIRQS - SPAPR_IRQ_MSI)
  31
  32 typedef struct SpaprMachineState SpaprMachineState;
  33
  34 typedef struct SpaprInterruptController SpaprInterruptController;
  35
  36 #define TYPE_SPAPR_INTC "spapr-interrupt-controller"
  37 #define SPAPR_INTC(obj)                                     \
  38     INTERFACE_CHECK(SpaprInterruptController, (obj), TYPE_SPAPR_INTC)
  39 #define SPAPR_INTC_CLASS(klass)                                     \
  40     OBJECT_CLASS_CHECK(SpaprInterruptControllerClass, (klass), TYPE_SPAPR_INTC)
  41 #define SPAPR_INTC_GET_CLASS(obj)                                   \
  42     OBJECT_GET_CLASS(SpaprInterruptControllerClass, (obj), TYPE_SPAPR_INTC)
  43
  44 typedef struct SpaprInterruptControllerClass {
  45     InterfaceClass parent;
  46
  47     int (*activate)(SpaprInterruptController *intc, Error **errp);
  48     void (*deactivate)(SpaprInterruptController *intc);
  49
  50     /*
  51      * These methods will typically be called on all intcs, active and
  52      * inactive
  53      */
  54     int (*cpu_intc_create)(SpaprInterruptController *intc,
  55                             PowerPCCPU *cpu, Error **errp);
  56     int (*claim_irq)(SpaprInterruptController *intc, int irq, bool lsi,
  57                      Error **errp);
  58     void (*free_irq)(SpaprInterruptController *intc, int irq);
  59
  60     /* These methods should only be called on the active intc */
  61     void (*set_irq)(SpaprInterruptController *intc, int irq, int val);
  62     void (*print_info)(SpaprInterruptController *intc, Monitor *mon);
  63     void (*dt)(SpaprInterruptController *intc, uint32_t nr_servers,
  64                void *fdt, uint32_t phandle);
  65 } SpaprInterruptControllerClass;
  66
  67 void spapr_irq_update_active_intc(SpaprMachineState *spapr);
  68
  69 int spapr_irq_cpu_intc_create(SpaprMachineState *spapr,
  70                               PowerPCCPU *cpu, Error **errp);
  71 void spapr_irq_print_info(SpaprMachineState *spapr, Monitor *mon);
  72 void spapr_irq_dt(SpaprMachineState *spapr, uint32_t nr_servers,
  73                   void *fdt, uint32_t phandle);
  74
  75 void spapr_irq_msi_init(SpaprMachineState *spapr, uint32_t nr_msis);
  76 int spapr_irq_msi_alloc(SpaprMachineState *spapr, uint32_t num, bool align,
  77                         Error **errp);
  78 void spapr_irq_msi_free(SpaprMachineState *spapr, int irq, uint32_t num);
  79
  80 typedef struct SpaprIrq {
  81     uint32_t    nr_xirqs;
  82     uint32_t    nr_msis;
  83     bool        xics;
  84     bool        xive;
  85
  86     int (*post_load)(SpaprMachineState *spapr, int version_id);
  87     void (*reset)(SpaprMachineState *spapr, Error **errp);
  88     void (*init_kvm)(SpaprMachineState *spapr, Error **errp);
  89 } SpaprIrq;
  90
  91 extern SpaprIrq spapr_irq_xics;
  92 extern SpaprIrq spapr_irq_xics_legacy;
  93 extern SpaprIrq spapr_irq_xive;
  94 extern SpaprIrq spapr_irq_dual;
  95
  96 void spapr_irq_init(SpaprMachineState *spapr, Error **errp);
  97 int spapr_irq_claim(SpaprMachineState *spapr, int irq, bool lsi, Error **errp);
  98 void spapr_irq_free(SpaprMachineState *spapr, int irq, int num);
  99 qemu_irq spapr_qirq(SpaprMachineState *spapr, int irq);
 100 int spapr_irq_post_load(SpaprMachineState *spapr, int version_id);
 101 void spapr_irq_reset(SpaprMachineState *spapr, Error **errp);
 102 int spapr_irq_get_phandle(SpaprMachineState *spapr, void *fdt, Error **errp);
 103
 104 /*
 105  * XICS legacy routines
 106  */
 107 int spapr_irq_find(SpaprMachineState *spapr, int num, bool align, Error **errp);
 108 #define spapr_irq_findone(spapr, errp) spapr_irq_find(spapr, 1, false, errp)
 109
 110 #endif