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1 #ifndef OPENPIC_H
2 #define OPENPIC_H
3
4 #include "hw/core/sysbus.h"
5 #include "hw/core/cpu.h"
6 #include "qom/object.h"
7
8 #define MAX_CPU 32
9 #define MAX_MSI 8
10 #define VID 0x03 /* MPIC version ID */
11
12 /* OpenPIC have 5 outputs per CPU connected and one IRQ out single output */
13 enum {
14 OPENPIC_OUTPUT_INT = 0, /* IRQ */
15 OPENPIC_OUTPUT_CINT, /* critical IRQ */
16 OPENPIC_OUTPUT_MCK, /* Machine check event */
17 OPENPIC_OUTPUT_DEBUG, /* Unconditional debug event */
18 OPENPIC_OUTPUT_RESET, /* Core reset event */
19 OPENPIC_OUTPUT_NB,
20 };
21
22 typedef struct IrqLines { qemu_irq irq[OPENPIC_OUTPUT_NB]; } IrqLines;
23
24 #define OPENPIC_MODEL_FSL_MPIC_20 1
25 #define OPENPIC_MODEL_FSL_MPIC_42 2
26 #define OPENPIC_MODEL_KEYLARGO 3
27
28 #define OPENPIC_MAX_SRC 256
29 #define OPENPIC_MAX_TMR 4
30 #define OPENPIC_MAX_IPI 4
31 #define OPENPIC_MAX_IRQ (OPENPIC_MAX_SRC + OPENPIC_MAX_IPI + \
32 OPENPIC_MAX_TMR)
33
34 /* KeyLargo */
35 #define KEYLARGO_MAX_CPU 4
36 #define KEYLARGO_MAX_EXT 64
37 #define KEYLARGO_MAX_IPI 4
38 #define KEYLARGO_MAX_IRQ (64 + KEYLARGO_MAX_IPI)
39 #define KEYLARGO_MAX_TMR 0
40 #define KEYLARGO_IPI_IRQ (KEYLARGO_MAX_EXT) /* First IPI IRQ */
41 /* Timers don't exist but this makes the code happy... */
42 #define KEYLARGO_TMR_IRQ (KEYLARGO_IPI_IRQ + KEYLARGO_MAX_IPI)
43
44 typedef struct FslMpicInfo {
45 int max_ext;
46 } FslMpicInfo;
47
48 typedef enum IRQType {
49 IRQ_TYPE_NORMAL = 0,
50 IRQ_TYPE_FSLINT, /* FSL internal interrupt -- level only */
51 IRQ_TYPE_FSLSPECIAL, /* FSL timer/IPI interrupt, edge, no polarity */
52 } IRQType;
53
54 /*
55 * Round up to the nearest 64 IRQs so that the queue length
56 * won't change when moving between 32 and 64 bit hosts.
57 */
58 #define IRQQUEUE_SIZE_BITS ROUND_UP(OPENPIC_MAX_IRQ, 64)
59
60 typedef struct IRQQueue {
61 unsigned long *queue;
62 int32_t queue_size; /* Only used for VMSTATE_BITMAP */
63 int next;
64 int priority;
65 } IRQQueue;
66
67 typedef struct IRQSource {
68 uint32_t ivpr; /* IRQ vector/priority register */
69 uint32_t idr; /* IRQ destination register */
70 uint32_t destmask; /* bitmap of CPU destinations */
71 int last_cpu;
72 int output; /* IRQ level, e.g. OPENPIC_OUTPUT_INT */
73 int pending; /* TRUE if IRQ is pending */
74 IRQType type;
75 bool level:1; /* level-triggered */
76 bool nomask:1; /* critical interrupts ignore mask on some FSL MPICs */
77 } IRQSource;
78
79 #define IVPR_MASK_SHIFT 31
80 #define IVPR_MASK_MASK (1U << IVPR_MASK_SHIFT)
81 #define IVPR_ACTIVITY_SHIFT 30
82 #define IVPR_ACTIVITY_MASK (1U << IVPR_ACTIVITY_SHIFT)
83 #define IVPR_MODE_SHIFT 29
84 #define IVPR_MODE_MASK (1U << IVPR_MODE_SHIFT)
85 #define IVPR_POLARITY_SHIFT 23
86 #define IVPR_POLARITY_MASK (1U << IVPR_POLARITY_SHIFT)
87 #define IVPR_SENSE_SHIFT 22
88 #define IVPR_SENSE_MASK (1U << IVPR_SENSE_SHIFT)
89
90 #define IVPR_PRIORITY_MASK (0xFU << 16)
91 #define IVPR_PRIORITY(_ivprr_) ((int)(((_ivprr_) & IVPR_PRIORITY_MASK) >> 16))
92 #define IVPR_VECTOR(opp, _ivprr_) ((_ivprr_) & (opp)->vector_mask)
93
94 /* IDR[EP/CI] are only for FSL MPIC prior to v4.0 */
95 #define IDR_EP 0x80000000 /* external pin */
96 #define IDR_CI 0x40000000 /* critical interrupt */
97
98 typedef struct OpenPICTimer {
99 uint32_t tccr; /* Global timer current count register */
100 uint32_t tbcr; /* Global timer base count register */
101 int n_IRQ;
102 bool qemu_timer_active; /* Is the qemu_timer is running? */
103 struct QEMUTimer *qemu_timer;
104 struct OpenPICState *opp; /* Device timer is part of. */
105 /*
106 * The QEMU_CLOCK_VIRTUAL time (in ns) corresponding to the last
107 * current_count written or read, only defined if qemu_timer_active.
108 */
109 uint64_t origin_time;
110 } OpenPICTimer;
111
112 typedef struct OpenPICMSI {
113 uint32_t msir; /* Shared Message Signaled Interrupt Register */
114 } OpenPICMSI;
115
116 typedef struct IRQDest {
117 int32_t ctpr; /* CPU current task priority */
118 IRQQueue raised;
119 IRQQueue servicing;
120 qemu_irq *irqs;
121
122 /* Count of IRQ sources asserting on non-INT outputs */
123 uint32_t outputs_active[OPENPIC_OUTPUT_NB];
124 } IRQDest;
125
126 #define TYPE_OPENPIC "openpic"
127 OBJECT_DECLARE_SIMPLE_TYPE(OpenPICState, OPENPIC)
128
129 struct OpenPICState {
130 /*< private >*/
131 SysBusDevice parent_obj;
132 /*< public >*/
133
134 MemoryRegion mem;
135
136 /* Behavior control */
137 FslMpicInfo *fsl;
138 uint32_t model;
139 uint32_t flags;
140 uint32_t nb_irqs;
141 uint32_t vid;
142 uint32_t vir; /* Vendor identification register */
143 uint32_t vector_mask;
144 uint32_t tfrr_reset;
145 uint32_t ivpr_reset;
146 uint32_t idr_reset;
147 uint32_t brr1;
148 uint32_t mpic_mode_mask;
149
150 /* Sub-regions */
151 MemoryRegion sub_io_mem[6];
152
153 /* Global registers */
154 uint32_t frr; /* Feature reporting register */
155 uint32_t gcr; /* Global configuration register */
156 uint32_t pir; /* Processor initialization register */
157 uint32_t spve; /* Spurious vector register */
158 uint32_t tfrr; /* Timer frequency reporting register */
159 /* Source registers */
160 IRQSource src[OPENPIC_MAX_IRQ];
161 /* Local registers per output pin */
162 IRQDest dst[MAX_CPU];
163 uint32_t nb_cpus;
164 /* Timer registers */
165 OpenPICTimer timers[OPENPIC_MAX_TMR];
166 uint32_t max_tmr;
167
168 /* Shared MSI registers */
169 OpenPICMSI msi[MAX_MSI];
170 uint32_t max_irq;
171 uint32_t irq_ipi0;
172 uint32_t irq_tim0;
173 uint32_t irq_msi;
174 };
175
176 #endif /* OPENPIC_H */