xref: /openbmc/qemu/include/hw/intc/imx_avic.h (revision c122bca9)
1 /*
2  * i.MX31 Vectored Interrupt Controller
3  *
4  * Note this is NOT the PL192 provided by ARM, but
5  * a custom implementation by Freescale.
6  *
7  * Copyright (c) 2008 OKL
8  * Copyright (c) 2011 NICTA Pty Ltd
9  * Originally written by Hans Jiang
10  * Updated by Jean-Christophe Dubois <jcd@tribudubois.net>
11  *
12  * This code is licensed under the GPL version 2 or later.  See
13  * the COPYING file in the top-level directory.
14  *
15  * TODO: implement vectors.
16  */
17 #ifndef IMX_AVIC_H
18 #define IMX_AVIC_H
19 
20 #include "hw/sysbus.h"
21 #include "qom/object.h"
22 
23 #define TYPE_IMX_AVIC "imx.avic"
24 OBJECT_DECLARE_SIMPLE_TYPE(IMXAVICState, IMX_AVIC)
25 
26 #define IMX_AVIC_NUM_IRQS 64
27 
28 /* Interrupt Control Bits */
29 #define ABFLAG (1<<25)
30 #define ABFEN  (1<<24)
31 #define NIDIS  (1<<22) /* Normal Interrupt disable */
32 #define FIDIS  (1<<21) /* Fast interrupt disable */
33 #define NIAD   (1<<20) /* Normal Interrupt Arbiter Rise ARM level */
34 #define FIAD   (1<<19) /* Fast Interrupt Arbiter Rise ARM level */
35 #define NM     (1<<18) /* Normal interrupt mode */
36 
37 #define PRIO_PER_WORD (sizeof(uint32_t) * 8 / 4)
38 #define PRIO_WORDS (IMX_AVIC_NUM_IRQS/PRIO_PER_WORD)
39 
40 struct IMXAVICState {
41     /*< private >*/
42     SysBusDevice parent_obj;
43 
44     /*< public >*/
45     MemoryRegion iomem;
46     uint64_t pending;
47     uint64_t enabled;
48     uint64_t is_fiq;
49     uint32_t intcntl;
50     uint32_t intmask;
51     qemu_irq irq;
52     qemu_irq fiq;
53     uint32_t prio[PRIO_WORDS]; /* Priorities are 4-bits each */
54 };
55 
56 #endif /* IMX_AVIC_H */
57