cd9ae806cd
aux_create_slave() has become a trivial wrapper around qdev_new(). There's just one user. Eliminate. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20200610053247.1583243-35-armbru@redhat.com>
142 lines
3.3 KiB
C
142 lines
3.3 KiB
C
/*
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* auxbus.h
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*
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* Copyright (C)2014 : GreenSocs Ltd
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* http://www.greensocs.com/ , email: info@greensocs.com
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*
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* Developed by :
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* Frederic Konrad <fred.konrad@greensocs.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option)any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef HW_MISC_AUXBUS_H
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#define HW_MISC_AUXBUS_H
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#include "exec/memory.h"
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#include "hw/qdev-core.h"
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typedef struct AUXBus AUXBus;
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typedef struct AUXSlave AUXSlave;
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typedef enum AUXCommand AUXCommand;
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typedef enum AUXReply AUXReply;
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typedef struct AUXTOI2CState AUXTOI2CState;
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enum AUXCommand {
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WRITE_I2C = 0,
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READ_I2C = 1,
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WRITE_I2C_STATUS = 2,
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WRITE_I2C_MOT = 4,
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READ_I2C_MOT = 5,
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WRITE_AUX = 8,
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READ_AUX = 9
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};
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enum AUXReply {
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AUX_I2C_ACK = 0,
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AUX_NACK = 1,
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AUX_DEFER = 2,
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AUX_I2C_NACK = 4,
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AUX_I2C_DEFER = 8
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};
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#define TYPE_AUX_BUS "aux-bus"
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#define AUX_BUS(obj) OBJECT_CHECK(AUXBus, (obj), TYPE_AUX_BUS)
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struct AUXBus {
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/* < private > */
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BusState qbus;
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/* < public > */
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AUXSlave *current_dev;
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AUXSlave *dev;
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uint32_t last_i2c_address;
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AUXCommand last_transaction;
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AUXTOI2CState *bridge;
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MemoryRegion *aux_io;
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AddressSpace aux_addr_space;
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};
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#define TYPE_AUX_SLAVE "aux-slave"
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#define AUX_SLAVE(obj) \
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OBJECT_CHECK(AUXSlave, (obj), TYPE_AUX_SLAVE)
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struct AUXSlave {
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/* < private > */
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DeviceState parent_obj;
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/* < public > */
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MemoryRegion *mmio;
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};
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/**
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* aux_bus_init: Initialize an AUX bus.
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*
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* Returns the new AUX bus created.
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*
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* @parent The device where this bus is located.
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* @name The name of the bus.
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*/
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AUXBus *aux_bus_init(DeviceState *parent, const char *name);
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/**
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* aux_bus_realize: Realize an AUX bus.
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*
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* @bus: The AUX bus.
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*/
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void aux_bus_realize(AUXBus *bus);
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/*
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* aux_request: Make a request on the bus.
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*
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* Returns the reply of the request.
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*
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* @bus Ths bus where the request happen.
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* @cmd The command requested.
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* @address The 20bits address of the slave.
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* @len The length of the read or write.
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* @data The data array which will be filled or read during transfer.
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*/
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AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address,
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uint8_t len, uint8_t *data);
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/*
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* aux_get_i2c_bus: Get the i2c bus for I2C over AUX command.
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*
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* Returns the i2c bus associated to this AUX bus.
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*
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* @bus The AUX bus.
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*/
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I2CBus *aux_get_i2c_bus(AUXBus *bus);
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/*
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* aux_init_mmio: Init an mmio for an AUX slave.
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*
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* @aux_slave The AUX slave.
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* @mmio The mmio to be registered.
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*/
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void aux_init_mmio(AUXSlave *aux_slave, MemoryRegion *mmio);
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/* aux_map_slave: Map the mmio for an AUX slave on the bus.
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*
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* @dev The AUX slave.
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* @addr The address for the slave's mmio.
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*/
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void aux_map_slave(AUXSlave *dev, hwaddr addr);
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#endif /* HW_MISC_AUXBUS_H */
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