ppc/pnv: check size before data buffer access
[qemu/ar7.git] / hw / ide / ahci-allwinner.c
blobf98e6cb3d4fcbb3bdf09f6e583f73d321958f6cc
1 /*
2 * QEMU Allwinner AHCI Emulation
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 #include "qemu/osdep.h"
19 #include "hw/hw.h"
20 #include "qemu/error-report.h"
21 #include "sysemu/dma.h"
22 #include "hw/ide/internal.h"
23 #include "ahci_internal.h"
25 #include "trace.h"
27 #define ALLWINNER_AHCI(obj) \
28 OBJECT_CHECK(AllwinnerAHCIState, (obj), TYPE_ALLWINNER_AHCI)
30 #define ALLWINNER_AHCI_BISTAFR ((0xa0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
31 #define ALLWINNER_AHCI_BISTCR ((0xa4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
32 #define ALLWINNER_AHCI_BISTFCTR ((0xa8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
33 #define ALLWINNER_AHCI_BISTSR ((0xac - ALLWINNER_AHCI_MMIO_OFF) / 4)
34 #define ALLWINNER_AHCI_BISTDECR ((0xb0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
35 #define ALLWINNER_AHCI_DIAGNR0 ((0xb4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
36 #define ALLWINNER_AHCI_DIAGNR1 ((0xb8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
37 #define ALLWINNER_AHCI_OOBR ((0xbc - ALLWINNER_AHCI_MMIO_OFF) / 4)
38 #define ALLWINNER_AHCI_PHYCS0R ((0xc0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
39 #define ALLWINNER_AHCI_PHYCS1R ((0xc4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
40 #define ALLWINNER_AHCI_PHYCS2R ((0xc8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
41 #define ALLWINNER_AHCI_TIMER1MS ((0xe0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
42 #define ALLWINNER_AHCI_GPARAM1R ((0xe8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
43 #define ALLWINNER_AHCI_GPARAM2R ((0xec - ALLWINNER_AHCI_MMIO_OFF) / 4)
44 #define ALLWINNER_AHCI_PPARAMR ((0xf0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
45 #define ALLWINNER_AHCI_TESTR ((0xf4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
46 #define ALLWINNER_AHCI_VERSIONR ((0xf8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
47 #define ALLWINNER_AHCI_IDR ((0xfc - ALLWINNER_AHCI_MMIO_OFF) / 4)
48 #define ALLWINNER_AHCI_RWCR ((0xfc - ALLWINNER_AHCI_MMIO_OFF) / 4)
50 static uint64_t allwinner_ahci_mem_read(void *opaque, hwaddr addr,
51 unsigned size)
53 AllwinnerAHCIState *a = opaque;
54 AHCIState *s = &(SYSBUS_AHCI(a)->ahci);
55 uint64_t val = a->regs[addr / 4];
57 switch (addr / 4) {
58 case ALLWINNER_AHCI_PHYCS0R:
59 val |= 0x2 << 28;
60 break;
61 case ALLWINNER_AHCI_PHYCS2R:
62 val &= ~(0x1 << 24);
63 break;
65 trace_allwinner_ahci_mem_read(s, a, addr, val, size);
66 return val;
69 static void allwinner_ahci_mem_write(void *opaque, hwaddr addr,
70 uint64_t val, unsigned size)
72 AllwinnerAHCIState *a = opaque;
73 AHCIState *s = &(SYSBUS_AHCI(a)->ahci);
75 trace_allwinner_ahci_mem_write(s, a, addr, val, size);
76 a->regs[addr / 4] = val;
79 static const MemoryRegionOps allwinner_ahci_mem_ops = {
80 .read = allwinner_ahci_mem_read,
81 .write = allwinner_ahci_mem_write,
82 .valid.min_access_size = 4,
83 .valid.max_access_size = 4,
84 .endianness = DEVICE_LITTLE_ENDIAN,
87 static void allwinner_ahci_init(Object *obj)
89 SysbusAHCIState *s = SYSBUS_AHCI(obj);
90 AllwinnerAHCIState *a = ALLWINNER_AHCI(obj);
92 memory_region_init_io(&a->mmio, OBJECT(obj), &allwinner_ahci_mem_ops, a,
93 "allwinner-ahci", ALLWINNER_AHCI_MMIO_SIZE);
94 memory_region_add_subregion(&s->ahci.mem, ALLWINNER_AHCI_MMIO_OFF,
95 &a->mmio);
98 static const VMStateDescription vmstate_allwinner_ahci = {
99 .name = "allwinner-ahci",
100 .version_id = 1,
101 .minimum_version_id = 1,
102 .fields = (VMStateField[]) {
103 VMSTATE_UINT32_ARRAY(regs, AllwinnerAHCIState,
104 ALLWINNER_AHCI_MMIO_SIZE / 4),
105 VMSTATE_END_OF_LIST()
109 static void allwinner_ahci_class_init(ObjectClass *klass, void *data)
111 DeviceClass *dc = DEVICE_CLASS(klass);
113 dc->vmsd = &vmstate_allwinner_ahci;
116 static const TypeInfo allwinner_ahci_info = {
117 .name = TYPE_ALLWINNER_AHCI,
118 .parent = TYPE_SYSBUS_AHCI,
119 .instance_size = sizeof(AllwinnerAHCIState),
120 .instance_init = allwinner_ahci_init,
121 .class_init = allwinner_ahci_class_init,
124 static void sysbus_ahci_register_types(void)
126 type_register_static(&allwinner_ahci_info);
129 type_init(sysbus_ahci_register_types)