xref: /openbmc/qemu/include/hw/ppc/spapr_irq.h (revision f0984d40)
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
118