1 /*
2  * libqos driver framework
3  *
4  * Copyright (c) 2019 Red Hat, Inc.
5  *
6  * Author: Paolo Bonzini <pbonzini@redhat.com>
7  *
8  * This library is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License version 2.1 as published by the Free Software Foundation.
11  *
12  * This library is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with this library; if not, see <http://www.gnu.org/licenses/>
19  */
20 
21 #include "qemu/osdep.h"
22 #include "libqtest.h"
23 #include "malloc.h"
24 #include "qgraph.h"
25 #include "i2c.h"
26 
27 #define ARM_PAGE_SIZE            4096
28 #define N800_RAM_START      0x80000000
29 #define N800_RAM_END        0x88000000
30 
31 typedef struct QN800Machine QN800Machine;
32 
33 struct QN800Machine {
34     QOSGraphObject obj;
35     QGuestAllocator alloc;
36     OMAPI2C i2c_1;
37 };
38 
39 static void *n800_get_driver(void *object, const char *interface)
40 {
41     QN800Machine *machine = object;
42     if (!g_strcmp0(interface, "memory")) {
43         return &machine->alloc;
44     }
45 
46     fprintf(stderr, "%s not present in arm/n800\n", interface);
47     g_assert_not_reached();
48 }
49 
50 static QOSGraphObject *n800_get_device(void *obj, const char *device)
51 {
52     QN800Machine *machine = obj;
53     if (!g_strcmp0(device, "omap_i2c")) {
54         return &machine->i2c_1.obj;
55     }
56 
57     fprintf(stderr, "%s not present in arm/n800\n", device);
58     g_assert_not_reached();
59 }
60 
61 static void n800_destructor(QOSGraphObject *obj)
62 {
63     QN800Machine *machine = (QN800Machine *) obj;
64     alloc_destroy(&machine->alloc);
65 }
66 
67 static void *qos_create_machine_arm_n800(QTestState *qts)
68 {
69     QN800Machine *machine = g_new0(QN800Machine, 1);
70 
71     alloc_init(&machine->alloc, 0,
72                N800_RAM_START,
73                N800_RAM_END,
74                ARM_PAGE_SIZE);
75     machine->obj.get_device = n800_get_device;
76     machine->obj.get_driver = n800_get_driver;
77     machine->obj.destructor = n800_destructor;
78 
79     omap_i2c_init(&machine->i2c_1, qts, 0x48070000);
80     return &machine->obj;
81 }
82 
83 static void n800_register_nodes(void)
84 {
85     QOSGraphEdgeOptions edge = {
86         .extra_device_opts = "bus=i2c-bus.0"
87     };
88     qos_node_create_machine("arm/n800", qos_create_machine_arm_n800);
89     qos_node_contains("arm/n800", "omap_i2c", &edge, NULL);
90 }
91 
92 libqos_init(n800_register_nodes);
93