block/export: Add query-block-exports
[qemu.git] / include / hw / timer / a9gtimer.h
1 /*
2 * Global peripheral timer block for ARM A9MP
3 *
4 * (C) 2013 Xilinx Inc.
5 *
6 * Written by Fran├žois LEGAL
7 * Written by Peter Crosthwaite <peter.crosthwaite@xilinx.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #ifndef A9GTIMER_H
24 #define A9GTIMER_H
25
26 #include "hw/sysbus.h"
27 #include "qom/object.h"
28
29 #define A9_GTIMER_MAX_CPUS 4
30
31 #define TYPE_A9_GTIMER "arm.cortex-a9-global-timer"
32 OBJECT_DECLARE_SIMPLE_TYPE(A9GTimerState, A9_GTIMER)
33
34 #define R_COUNTER_LO 0x00
35 #define R_COUNTER_HI 0x04
36
37 #define R_CONTROL 0x08
38 #define R_CONTROL_TIMER_ENABLE (1 << 0)
39 #define R_CONTROL_COMP_ENABLE (1 << 1)
40 #define R_CONTROL_IRQ_ENABLE (1 << 2)
41 #define R_CONTROL_AUTO_INCREMENT (1 << 3)
42 #define R_CONTROL_PRESCALER_SHIFT 8
43 #define R_CONTROL_PRESCALER_LEN 8
44 #define R_CONTROL_PRESCALER_MASK (((1 << R_CONTROL_PRESCALER_LEN) - 1) << \
45 R_CONTROL_PRESCALER_SHIFT)
46
47 #define R_CONTROL_BANKED (R_CONTROL_COMP_ENABLE | \
48 R_CONTROL_IRQ_ENABLE | \
49 R_CONTROL_AUTO_INCREMENT)
50 #define R_CONTROL_NEEDS_SYNC (R_CONTROL_TIMER_ENABLE | \
51 R_CONTROL_PRESCALER_MASK)
52
53 #define R_INTERRUPT_STATUS 0x0C
54 #define R_COMPARATOR_LO 0x10
55 #define R_COMPARATOR_HI 0x14
56 #define R_AUTO_INCREMENT 0x18
57
58 typedef struct A9GTimerPerCPU A9GTimerPerCPU;
59
60 struct A9GTimerPerCPU {
61 A9GTimerState *parent;
62
63 uint32_t control; /* only per cpu banked bits valid */
64 uint64_t compare;
65 uint32_t status;
66 uint32_t inc;
67
68 MemoryRegion iomem;
69 qemu_irq irq; /* PPI interrupts */
70 };
71
72 struct A9GTimerState {
73 /*< private >*/
74 SysBusDevice parent_obj;
75 /*< public >*/
76
77 MemoryRegion iomem;
78 /* static props */
79 uint32_t num_cpu;
80
81 QEMUTimer *timer;
82
83 uint64_t counter; /* current timer value */
84
85 uint64_t ref_counter;
86 uint64_t cpu_ref_time; /* the cpu time as of last update of ref_counter */
87 uint32_t control; /* only non per cpu banked bits valid */
88
89 A9GTimerPerCPU per_cpu[A9_GTIMER_MAX_CPUS];
90 };
91
92 typedef struct A9GTimerUpdate {
93 uint64_t now;
94 uint64_t new;
95 } A9GTimerUpdate;
96
97 #endif /* A9GTIMER_H */