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_IPI        0x0
  17 #define SPAPR_IRQ_EPOW       0x1000  /* XICS_IRQ_BASE offset */
  18 #define SPAPR_IRQ_HOTPLUG    0x1001
  19 #define SPAPR_IRQ_VIO        0x1100  /* 256 VIO devices */
  20 #define SPAPR_IRQ_PCI_LSI    0x1200  /* 32+ PHBs devices */
  21
  22 #define SPAPR_IRQ_MSI        0x1300  /* Offset of the dynamic range covered
  23                                       * by the bitmap allocator */
  24
  25 typedef struct sPAPRMachineState sPAPRMachineState;
  26
  27 void spapr_irq_msi_init(sPAPRMachineState *spapr, uint32_t nr_msis);
  28 int spapr_irq_msi_alloc(sPAPRMachineState *spapr, uint32_t num, bool align,
  29                         Error **errp);
  30 void spapr_irq_msi_free(sPAPRMachineState *spapr, int irq, uint32_t num);
  31 void spapr_irq_msi_reset(sPAPRMachineState *spapr);
  32
  33 typedef struct sPAPRIrq {
  34     uint32_t    nr_irqs;
  35     uint32_t    nr_msis;
  36
  37     void (*init)(sPAPRMachineState *spapr, Error **errp);
  38     int (*claim)(sPAPRMachineState *spapr, int irq, bool lsi, Error **errp);
  39     void (*free)(sPAPRMachineState *spapr, int irq, int num);
  40     qemu_irq (*qirq)(sPAPRMachineState *spapr, int irq);
  41     void (*print_info)(sPAPRMachineState *spapr, Monitor *mon);
  42 } sPAPRIrq;
  43
  44 extern sPAPRIrq spapr_irq_xics;
  45 extern sPAPRIrq spapr_irq_xics_legacy;
  46 extern sPAPRIrq spapr_irq_xive;
  47
  48 void spapr_irq_init(sPAPRMachineState *spapr, Error **errp);
  49 int spapr_irq_claim(sPAPRMachineState *spapr, int irq, bool lsi, Error **errp);
  50 void spapr_irq_free(sPAPRMachineState *spapr, int irq, int num);
  51 qemu_irq spapr_qirq(sPAPRMachineState *spapr, int irq);
  52
  53 /*
  54  * XICS legacy routines
  55  */
  56 int spapr_irq_find(sPAPRMachineState *spapr, int num, bool align, Error **errp);
  57 #define spapr_irq_findone(spapr, errp) spapr_irq_find(spapr, 1, false, errp)
  58
  59 #endif