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 /*
  14  * IRQ range offsets per device type
  15  */
  16 #define SPAPR_IRQ_EPOW       0x1000  /* XICS_IRQ_BASE offset */
  17 #define SPAPR_IRQ_HOTPLUG    0x1001
  18 #define SPAPR_IRQ_VIO        0x1100  /* 256 VIO devices */
  19 #define SPAPR_IRQ_PCI_LSI    0x1200  /* 32+ PHBs devices */
  20
  21 #define SPAPR_IRQ_MSI        0x1300  /* Offset of the dynamic range covered
  22                                       * by the bitmap allocator */
  23
  24 typedef struct sPAPRMachineState sPAPRMachineState;
  25
  26 void spapr_irq_msi_init(sPAPRMachineState *spapr, uint32_t nr_msis);
  27 int spapr_irq_msi_alloc(sPAPRMachineState *spapr, uint32_t num, bool align,
  28                         Error **errp);
  29 void spapr_irq_msi_free(sPAPRMachineState *spapr, int irq, uint32_t num);
  30 void spapr_irq_msi_reset(sPAPRMachineState *spapr);
  31
  32 typedef struct sPAPRIrq {
  33     uint32_t    nr_irqs;
  34     uint32_t    nr_msis;
  35
  36     void (*init)(sPAPRMachineState *spapr, Error **errp);
  37     int (*claim)(sPAPRMachineState *spapr, int irq, bool lsi, Error **errp);
  38     void (*free)(sPAPRMachineState *spapr, int irq, int num);
  39     qemu_irq (*qirq)(sPAPRMachineState *spapr, int irq);
  40     void (*print_info)(sPAPRMachineState *spapr, Monitor *mon);
  41 } sPAPRIrq;
  42
  43 extern sPAPRIrq spapr_irq_xics;
  44 extern sPAPRIrq spapr_irq_xics_legacy;
  45
  46 void spapr_irq_init(sPAPRMachineState *spapr, Error **errp);
  47 int spapr_irq_claim(sPAPRMachineState *spapr, int irq, bool lsi, Error **errp);
  48 void spapr_irq_free(sPAPRMachineState *spapr, int irq, int num);
  49 qemu_irq spapr_qirq(sPAPRMachineState *spapr, int irq);
  50
  51 /*
  52  * XICS legacy routines
  53  */
  54 int spapr_irq_find(sPAPRMachineState *spapr, int num, bool align, Error **errp);
  55 #define spapr_irq_findone(spapr, errp) spapr_irq_find(spapr, 1, false, errp)
  56
  57 #endif