qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
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arm-n800-machine.c (2558B)

      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 "libqos-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);