xen/pt: allow QEMU to request MSI unmasking at bind time
[qemu.git] / hw / timer / m48t59-internal.h
1 /*
2 * QEMU M48T59 and M48T08 NVRAM emulation (common header)
3 *
4 * Copyright (c) 2003-2005, 2007 Jocelyn Mayer
5 * Copyright (c) 2013 Hervé Poussineau
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25 #ifndef HW_M48T59_INTERNAL_H
26 #define HW_M48T59_INTERNAL_H 1
27
28 //#define DEBUG_NVRAM
29
30 #if defined(DEBUG_NVRAM)
31 #define NVRAM_PRINTF(fmt, ...) do { printf(fmt , ## __VA_ARGS__); } while (0)
32 #else
33 #define NVRAM_PRINTF(fmt, ...) do { } while (0)
34 #endif
35
36 /*
37 * The M48T02, M48T08 and M48T59 chips are very similar. The newer '59 has
38 * alarm and a watchdog timer and related control registers. In the
39 * PPC platform there is also a nvram lock function.
40 */
41
42 typedef struct M48txxInfo {
43 const char *bus_name;
44 uint32_t model; /* 2 = m48t02, 8 = m48t08, 59 = m48t59 */
45 uint32_t size;
46 } M48txxInfo;
47
48 typedef struct M48t59State {
49 /* Hardware parameters */
50 qemu_irq IRQ;
51 MemoryRegion iomem;
52 uint32_t size;
53 int32_t base_year;
54 /* RTC management */
55 time_t time_offset;
56 time_t stop_time;
57 /* Alarm & watchdog */
58 struct tm alarm;
59 QEMUTimer *alrm_timer;
60 QEMUTimer *wd_timer;
61 /* NVRAM storage */
62 uint8_t *buffer;
63 /* Model parameters */
64 uint32_t model; /* 2 = m48t02, 8 = m48t08, 59 = m48t59 */
65 /* NVRAM storage */
66 uint16_t addr;
67 uint8_t lock;
68 } M48t59State;
69
70 uint32_t m48t59_read(M48t59State *NVRAM, uint32_t addr);
71 void m48t59_write(M48t59State *NVRAM, uint32_t addr, uint32_t val);
72 void m48t59_reset_common(M48t59State *NVRAM);
73 void m48t59_realize_common(M48t59State *s, Error **errp);
74
75 static inline void m48t59_toggle_lock(M48t59State *NVRAM, int lock)
76 {
77 NVRAM->lock ^= 1 << lock;
78 }
79
80 extern const MemoryRegionOps m48t59_io_ops;
81
82 #endif /* HW_M48T59_INTERNAL_H */