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 #include "qom/object.h"
  15
  16 /*
  17  * IRQ range offsets per device type
  18  */
  19 #define SPAPR_IRQ_IPI        0x0
  20
  21 #define SPAPR_XIRQ_BASE      XICS_IRQ_BASE /* 0x1000 */
  22 #define SPAPR_IRQ_EPOW       (SPAPR_XIRQ_BASE + 0x0000)
  23 #define SPAPR_IRQ_HOTPLUG    (SPAPR_XIRQ_BASE + 0x0001)
  24 #define SPAPR_IRQ_VIO        (SPAPR_XIRQ_BASE + 0x0100)  /* 256 VIO devices */
  25 #define SPAPR_IRQ_PCI_LSI    (SPAPR_XIRQ_BASE + 0x0200)  /* 32+ PHBs devices */
  26
  27 /* Offset of the dynamic range covered by the bitmap allocator */
  28 #define SPAPR_IRQ_MSI        (SPAPR_XIRQ_BASE + 0x0300)
  29
  30 #define SPAPR_NR_XIRQS       0x1000
  31
  32 struct 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 typedef struct SpaprInterruptControllerClass SpaprInterruptControllerClass;
  40 DECLARE_CLASS_CHECKERS(SpaprInterruptControllerClass, SPAPR_INTC,
  41                        TYPE_SPAPR_INTC)
  42
  43 struct SpaprInterruptControllerClass {
  44     InterfaceClass parent;
  45
  46     int (*activate)(SpaprInterruptController *intc, uint32_t nr_servers,
  47                     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     void (*cpu_intc_reset)(SpaprInterruptController *intc, PowerPCCPU *cpu);
  57     void (*cpu_intc_destroy)(SpaprInterruptController *intc, PowerPCCPU *cpu);
  58     int (*claim_irq)(SpaprInterruptController *intc, int irq, bool lsi,
  59                      Error **errp);
  60     void (*free_irq)(SpaprInterruptController *intc, int irq);
  61
  62     /* These methods should only be called on the active intc */
  63     void (*set_irq)(SpaprInterruptController *intc, int irq, int val);
  64     void (*print_info)(SpaprInterruptController *intc, Monitor *mon);
  65     void (*dt)(SpaprInterruptController *intc, uint32_t nr_servers,
  66                void *fdt, uint32_t phandle);
  67     int (*post_load)(SpaprInterruptController *intc, int version_id);
  68 };
  69
  70 void spapr_irq_update_active_intc(struct SpaprMachineState *spapr);
  71
  72 int spapr_irq_cpu_intc_create(struct SpaprMachineState *spapr,
  73                               PowerPCCPU *cpu, Error **errp);
  74 void spapr_irq_cpu_intc_reset(struct SpaprMachineState *spapr, PowerPCCPU *cpu);
  75 void spapr_irq_cpu_intc_destroy(struct SpaprMachineState *spapr, PowerPCCPU *cpu);
  76 void spapr_irq_print_info(struct SpaprMachineState *spapr, Monitor *mon);
  77 void spapr_irq_dt(struct SpaprMachineState *spapr, uint32_t nr_servers,
  78                   void *fdt, uint32_t phandle);
  79
  80 uint32_t spapr_irq_nr_msis(struct SpaprMachineState *spapr);
  81 int spapr_irq_msi_alloc(struct SpaprMachineState *spapr, uint32_t num, bool align,
  82                         Error **errp);
  83 void spapr_irq_msi_free(struct SpaprMachineState *spapr, int irq, uint32_t num);
  84
  85 typedef struct SpaprIrq {
  86     bool        xics;
  87     bool        xive;
  88 } SpaprIrq;
  89
  90 extern SpaprIrq spapr_irq_xics;
  91 extern SpaprIrq spapr_irq_xics_legacy;
  92 extern SpaprIrq spapr_irq_xive;
  93 extern SpaprIrq spapr_irq_dual;
  94
  95 void spapr_irq_init(struct SpaprMachineState *spapr, Error **errp);
  96 int spapr_irq_claim(struct SpaprMachineState *spapr, int irq, bool lsi, Error **errp);
  97 void spapr_irq_free(struct SpaprMachineState *spapr, int irq, int num);
  98 qemu_irq spapr_qirq(struct SpaprMachineState *spapr, int irq);
  99 int spapr_irq_post_load(struct SpaprMachineState *spapr, int version_id);
 100 void spapr_irq_reset(struct SpaprMachineState *spapr, Error **errp);
 101 int spapr_irq_get_phandle(struct SpaprMachineState *spapr, void *fdt, Error **errp);
 102
 103 typedef int (*SpaprInterruptControllerInitKvm)(SpaprInterruptController *,
 104                                                uint32_t, Error **);
 105
 106 int spapr_irq_init_kvm(SpaprInterruptControllerInitKvm fn,
 107                        SpaprInterruptController *intc,
 108                        uint32_t nr_servers,
 109                        Error **errp);
 110
 111 /*
 112  * XICS legacy routines
 113  */
 114 int spapr_irq_find(struct SpaprMachineState *spapr, int num, bool align, Error **errp);
 115 #define spapr_irq_findone(spapr, errp) spapr_irq_find(spapr, 1, false, errp)
 116
 117 #endif