4 * Copyright (C)2014 : GreenSocs Ltd
5 * http://www.greensocs.com/ , email: info@greensocs.com
8 * Frederic Konrad <fred.konrad@greensocs.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, either version 2 of the License, or
13 * (at your option)any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, see <http://www.gnu.org/licenses/>.
25 #ifndef HW_MISC_AUXBUS_H
26 #define HW_MISC_AUXBUS_H
28 #include "exec/memory.h"
29 #include "hw/qdev-core.h"
31 typedef struct AUXBus AUXBus
;
32 typedef struct AUXSlave AUXSlave
;
33 typedef enum AUXCommand AUXCommand
;
34 typedef enum AUXReply AUXReply
;
35 typedef struct AUXTOI2CState AUXTOI2CState
;
55 #define TYPE_AUX_BUS "aux-bus"
56 #define AUX_BUS(obj) OBJECT_CHECK(AUXBus, (obj), TYPE_AUX_BUS)
63 AUXSlave
*current_dev
;
65 uint32_t last_i2c_address
;
66 AUXCommand last_transaction
;
68 AUXTOI2CState
*bridge
;
71 AddressSpace aux_addr_space
;
74 #define TYPE_AUX_SLAVE "aux-slave"
75 #define AUX_SLAVE(obj) \
76 OBJECT_CHECK(AUXSlave, (obj), TYPE_AUX_SLAVE)
80 DeviceState parent_obj
;
87 * aux_bus_init: Initialize an AUX bus.
89 * Returns the new AUX bus created.
91 * @parent The device where this bus is located.
92 * @name The name of the bus.
94 AUXBus
*aux_bus_init(DeviceState
*parent
, const char *name
);
97 * aux_bus_realize: Realize an AUX bus.
101 void aux_bus_realize(AUXBus
*bus
);
104 * aux_request: Make a request on the bus.
106 * Returns the reply of the request.
108 * @bus Ths bus where the request happen.
109 * @cmd The command requested.
110 * @address The 20bits address of the slave.
111 * @len The length of the read or write.
112 * @data The data array which will be filled or read during transfer.
114 AUXReply
aux_request(AUXBus
*bus
, AUXCommand cmd
, uint32_t address
,
115 uint8_t len
, uint8_t *data
);
118 * aux_get_i2c_bus: Get the i2c bus for I2C over AUX command.
120 * Returns the i2c bus associated to this AUX bus.
124 I2CBus
*aux_get_i2c_bus(AUXBus
*bus
);
127 * aux_init_mmio: Init an mmio for an AUX slave.
129 * @aux_slave The AUX slave.
130 * @mmio The mmio to be registered.
132 void aux_init_mmio(AUXSlave
*aux_slave
, MemoryRegion
*mmio
);
134 /* aux_map_slave: Map the mmio for an AUX slave on the bus.
136 * @dev The AUX slave.
137 * @addr The address for the slave's mmio.
139 void aux_map_slave(AUXSlave
*dev
, hwaddr addr
);
141 #endif /* HW_MISC_AUXBUS_H */