From e0dadc1e9ef1f35208e5d2af9c7740c18a0b769f Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Thu, 7 Jul 2016 13:47:01 +0100 Subject: aux: Rename aux.[ch] to auxbus.[ch] for the benefit of Windows MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On Windows 'aux.*' is a reserved name and cannot be used for filenames; see https://msdn.microsoft.com/en-gb/library/windows/desktop/aa365247(v=vs.85).aspx This prevents cloning the QEMU git repo on Windows: C:\Java\sources\kvm> git clone https://github.com/qemu/qemu.git Cloning into 'qemu'... remote: Counting objects: 279563, done. remote: Total 279563 (delta 0), reused 0 (delta 0), pack-reused 279563R Receiving objects: 100% (279563/279563), 122.45 MiB | 3.52 MiB/s, done. Resolving deltas: 100% (221942/221942), done. Checking connectivity... done. error: unable to create file hw/misc/aux.c (No such file or directory) error: unable to create file include/hw/misc/aux.h (No such file or directory) Checking out files: 100% (4795/4795), done. fatal: unable to checkout working tree warning: Clone succeeded, but checkout failed. You can inspect what was checked out with 'git status' and retry the checkout with 'git checkout -f HEAD' (bug https://bugs.launchpad.net/bugs/1595240) Rename the offending files for the benefit of Windows. Reported-by: Алексей Курган Signed-off-by: Peter Maydell Reviewed-by: Eric Blake Reviewed-by: Wei Huang Tested-by: KONRAD Frederic Message-id: 1467377145-32385-1-git-send-email-peter.maydell@linaro.org --- hw/display/dpcd.c | 2 +- hw/misc/Makefile.objs | 2 +- hw/misc/aux.c | 292 ------------------------------------------- hw/misc/auxbus.c | 292 +++++++++++++++++++++++++++++++++++++++++++ include/hw/display/xlnx_dp.h | 2 +- include/hw/misc/aux.h | 128 ------------------- include/hw/misc/auxbus.h | 128 +++++++++++++++++++ 7 files changed, 423 insertions(+), 423 deletions(-) delete mode 100644 hw/misc/aux.c create mode 100644 hw/misc/auxbus.c delete mode 100644 include/hw/misc/aux.h create mode 100644 include/hw/misc/auxbus.h diff --git a/hw/display/dpcd.c b/hw/display/dpcd.c index 5a36855..ce92ff6 100644 --- a/hw/display/dpcd.c +++ b/hw/display/dpcd.c @@ -28,7 +28,7 @@ #include "qemu/osdep.h" #include "qemu/log.h" -#include "hw/misc/aux.h" +#include "hw/misc/auxbus.h" #include "hw/display/dpcd.h" #ifndef DEBUG_DPCD diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index 54020aa..4cfbd10 100644 --- a/hw/misc/Makefile.objs +++ b/hw/misc/Makefile.objs @@ -51,5 +51,5 @@ obj-$(CONFIG_MIPS_ITU) += mips_itu.o obj-$(CONFIG_PVPANIC) += pvpanic.o obj-$(CONFIG_EDU) += edu.o obj-$(CONFIG_HYPERV_TESTDEV) += hyperv_testdev.o -obj-$(CONFIG_AUX) += aux.o +obj-$(CONFIG_AUX) += auxbus.o obj-$(CONFIG_ASPEED_SOC) += aspeed_scu.o diff --git a/hw/misc/aux.c b/hw/misc/aux.c deleted file mode 100644 index 06e24ca..0000000 --- a/hw/misc/aux.c +++ /dev/null @@ -1,292 +0,0 @@ -/* - * aux.c - * - * Copyright 2015 : GreenSocs Ltd - * http://www.greensocs.com/ , email: info@greensocs.com - * - * Developed by : - * Frederic Konrad - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option)any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, see . - * - */ - -/* - * This is an implementation of the AUX bus for VESA Display Port v1.1a. - */ - -#include "qemu/osdep.h" -#include "qemu/log.h" -#include "hw/misc/aux.h" -#include "hw/i2c/i2c.h" -#include "monitor/monitor.h" - -#ifndef DEBUG_AUX -#define DEBUG_AUX 0 -#endif - -#define DPRINTF(fmt, ...) do { \ - if (DEBUG_AUX) { \ - qemu_log("aux: " fmt , ## __VA_ARGS__); \ - } \ -} while (0); - -#define TYPE_AUXTOI2C "aux-to-i2c-bridge" -#define AUXTOI2C(obj) OBJECT_CHECK(AUXTOI2CState, (obj), TYPE_AUXTOI2C) - -static void aux_slave_dev_print(Monitor *mon, DeviceState *dev, int indent); -static inline I2CBus *aux_bridge_get_i2c_bus(AUXTOI2CState *bridge); - -/* aux-bus implementation (internal not public) */ -static void aux_bus_class_init(ObjectClass *klass, void *data) -{ - BusClass *k = BUS_CLASS(klass); - - /* AUXSlave has an MMIO so we need to change the way we print information - * in monitor. - */ - k->print_dev = aux_slave_dev_print; -} - -AUXBus *aux_init_bus(DeviceState *parent, const char *name) -{ - AUXBus *bus; - - bus = AUX_BUS(qbus_create(TYPE_AUX_BUS, parent, name)); - bus->bridge = AUXTOI2C(qdev_create(BUS(bus), TYPE_AUXTOI2C)); - - /* Memory related. */ - bus->aux_io = g_malloc(sizeof(*bus->aux_io)); - memory_region_init(bus->aux_io, OBJECT(bus), "aux-io", (1 << 20)); - address_space_init(&bus->aux_addr_space, bus->aux_io, "aux-io"); - return bus; -} - -static void aux_bus_map_device(AUXBus *bus, AUXSlave *dev, hwaddr addr) -{ - memory_region_add_subregion(bus->aux_io, addr, dev->mmio); -} - -static bool aux_bus_is_bridge(AUXBus *bus, DeviceState *dev) -{ - return (dev == DEVICE(bus->bridge)); -} - -I2CBus *aux_get_i2c_bus(AUXBus *bus) -{ - return aux_bridge_get_i2c_bus(bus->bridge); -} - -AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address, - uint8_t len, uint8_t *data) -{ - AUXReply ret = AUX_NACK; - I2CBus *i2c_bus = aux_get_i2c_bus(bus); - size_t i; - bool is_write = false; - - DPRINTF("request at address 0x%" PRIX32 ", command %u, len %u\n", address, - cmd, len); - - switch (cmd) { - /* - * Forward the request on the AUX bus.. - */ - case WRITE_AUX: - case READ_AUX: - is_write = cmd == READ_AUX ? false : true; - for (i = 0; i < len; i++) { - if (!address_space_rw(&bus->aux_addr_space, address++, - MEMTXATTRS_UNSPECIFIED, data++, 1, - is_write)) { - ret = AUX_I2C_ACK; - } else { - ret = AUX_NACK; - break; - } - } - break; - /* - * Classic I2C transactions.. - */ - case READ_I2C: - case WRITE_I2C: - is_write = cmd == READ_I2C ? false : true; - if (i2c_bus_busy(i2c_bus)) { - i2c_end_transfer(i2c_bus); - } - - if (i2c_start_transfer(i2c_bus, address, is_write)) { - ret = AUX_I2C_NACK; - break; - } - - ret = AUX_I2C_ACK; - while (len > 0) { - if (i2c_send_recv(i2c_bus, data++, is_write) < 0) { - ret = AUX_I2C_NACK; - break; - } - len--; - } - i2c_end_transfer(i2c_bus); - break; - /* - * I2C MOT transactions. - * - * Here we send a start when: - * - We didn't start transaction yet. - * - We had a READ and we do a WRITE. - * - We changed the address. - */ - case WRITE_I2C_MOT: - case READ_I2C_MOT: - is_write = cmd == READ_I2C_MOT ? false : true; - ret = AUX_I2C_NACK; - if (!i2c_bus_busy(i2c_bus)) { - /* - * No transactions started.. - */ - if (i2c_start_transfer(i2c_bus, address, is_write)) { - break; - } - } else if ((address != bus->last_i2c_address) || - (bus->last_transaction != cmd)) { - /* - * Transaction started but we need to restart.. - */ - i2c_end_transfer(i2c_bus); - if (i2c_start_transfer(i2c_bus, address, is_write)) { - break; - } - } - - bus->last_transaction = cmd; - bus->last_i2c_address = address; - while (len > 0) { - if (i2c_send_recv(i2c_bus, data++, is_write) < 0) { - i2c_end_transfer(i2c_bus); - break; - } - len--; - } - if (len == 0) { - ret = AUX_I2C_ACK; - } - break; - default: - DPRINTF("Not implemented!\n"); - return AUX_NACK; - } - - DPRINTF("reply: %u\n", ret); - return ret; -} - -static const TypeInfo aux_bus_info = { - .name = TYPE_AUX_BUS, - .parent = TYPE_BUS, - .instance_size = sizeof(AUXBus), - .class_init = aux_bus_class_init -}; - -/* aux-i2c implementation (internal not public) */ -struct AUXTOI2CState { - /*< private >*/ - DeviceState parent_obj; - - /*< public >*/ - I2CBus *i2c_bus; -}; - -static void aux_bridge_init(Object *obj) -{ - AUXTOI2CState *s = AUXTOI2C(obj); - - s->i2c_bus = i2c_init_bus(DEVICE(obj), "aux-i2c"); -} - -static inline I2CBus *aux_bridge_get_i2c_bus(AUXTOI2CState *bridge) -{ - return bridge->i2c_bus; -} - -static const TypeInfo aux_to_i2c_type_info = { - .name = TYPE_AUXTOI2C, - .parent = TYPE_DEVICE, - .instance_size = sizeof(AUXTOI2CState), - .instance_init = aux_bridge_init -}; - -/* aux-slave implementation */ -static void aux_slave_dev_print(Monitor *mon, DeviceState *dev, int indent) -{ - AUXBus *bus = AUX_BUS(qdev_get_parent_bus(dev)); - AUXSlave *s; - - /* Don't print anything if the device is I2C "bridge". */ - if (aux_bus_is_bridge(bus, dev)) { - return; - } - - s = AUX_SLAVE(dev); - - monitor_printf(mon, "%*smemory " TARGET_FMT_plx "/" TARGET_FMT_plx "\n", - indent, "", - object_property_get_int(OBJECT(s->mmio), "addr", NULL), - memory_region_size(s->mmio)); -} - -DeviceState *aux_create_slave(AUXBus *bus, const char *type, uint32_t addr) -{ - DeviceState *dev; - - dev = DEVICE(object_new(type)); - assert(dev); - qdev_set_parent_bus(dev, &bus->qbus); - qdev_init_nofail(dev); - aux_bus_map_device(AUX_BUS(qdev_get_parent_bus(dev)), AUX_SLAVE(dev), addr); - return dev; -} - -void aux_init_mmio(AUXSlave *aux_slave, MemoryRegion *mmio) -{ - assert(!aux_slave->mmio); - aux_slave->mmio = mmio; -} - -static void aux_slave_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *k = DEVICE_CLASS(klass); - - set_bit(DEVICE_CATEGORY_MISC, k->categories); - k->bus_type = TYPE_AUX_BUS; -} - -static const TypeInfo aux_slave_type_info = { - .name = TYPE_AUX_SLAVE, - .parent = TYPE_DEVICE, - .instance_size = sizeof(AUXSlave), - .abstract = true, - .class_init = aux_slave_class_init, -}; - -static void aux_register_types(void) -{ - type_register_static(&aux_bus_info); - type_register_static(&aux_slave_type_info); - type_register_static(&aux_to_i2c_type_info); -} - -type_init(aux_register_types) diff --git a/hw/misc/auxbus.c b/hw/misc/auxbus.c new file mode 100644 index 0000000..e4a7ba4 --- /dev/null +++ b/hw/misc/auxbus.c @@ -0,0 +1,292 @@ +/* + * auxbus.c + * + * Copyright 2015 : GreenSocs Ltd + * http://www.greensocs.com/ , email: info@greensocs.com + * + * Developed by : + * Frederic Konrad + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option)any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + * + */ + +/* + * This is an implementation of the AUX bus for VESA Display Port v1.1a. + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "hw/misc/auxbus.h" +#include "hw/i2c/i2c.h" +#include "monitor/monitor.h" + +#ifndef DEBUG_AUX +#define DEBUG_AUX 0 +#endif + +#define DPRINTF(fmt, ...) do { \ + if (DEBUG_AUX) { \ + qemu_log("aux: " fmt , ## __VA_ARGS__); \ + } \ +} while (0); + +#define TYPE_AUXTOI2C "aux-to-i2c-bridge" +#define AUXTOI2C(obj) OBJECT_CHECK(AUXTOI2CState, (obj), TYPE_AUXTOI2C) + +static void aux_slave_dev_print(Monitor *mon, DeviceState *dev, int indent); +static inline I2CBus *aux_bridge_get_i2c_bus(AUXTOI2CState *bridge); + +/* aux-bus implementation (internal not public) */ +static void aux_bus_class_init(ObjectClass *klass, void *data) +{ + BusClass *k = BUS_CLASS(klass); + + /* AUXSlave has an MMIO so we need to change the way we print information + * in monitor. + */ + k->print_dev = aux_slave_dev_print; +} + +AUXBus *aux_init_bus(DeviceState *parent, const char *name) +{ + AUXBus *bus; + + bus = AUX_BUS(qbus_create(TYPE_AUX_BUS, parent, name)); + bus->bridge = AUXTOI2C(qdev_create(BUS(bus), TYPE_AUXTOI2C)); + + /* Memory related. */ + bus->aux_io = g_malloc(sizeof(*bus->aux_io)); + memory_region_init(bus->aux_io, OBJECT(bus), "aux-io", (1 << 20)); + address_space_init(&bus->aux_addr_space, bus->aux_io, "aux-io"); + return bus; +} + +static void aux_bus_map_device(AUXBus *bus, AUXSlave *dev, hwaddr addr) +{ + memory_region_add_subregion(bus->aux_io, addr, dev->mmio); +} + +static bool aux_bus_is_bridge(AUXBus *bus, DeviceState *dev) +{ + return (dev == DEVICE(bus->bridge)); +} + +I2CBus *aux_get_i2c_bus(AUXBus *bus) +{ + return aux_bridge_get_i2c_bus(bus->bridge); +} + +AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address, + uint8_t len, uint8_t *data) +{ + AUXReply ret = AUX_NACK; + I2CBus *i2c_bus = aux_get_i2c_bus(bus); + size_t i; + bool is_write = false; + + DPRINTF("request at address 0x%" PRIX32 ", command %u, len %u\n", address, + cmd, len); + + switch (cmd) { + /* + * Forward the request on the AUX bus.. + */ + case WRITE_AUX: + case READ_AUX: + is_write = cmd == READ_AUX ? false : true; + for (i = 0; i < len; i++) { + if (!address_space_rw(&bus->aux_addr_space, address++, + MEMTXATTRS_UNSPECIFIED, data++, 1, + is_write)) { + ret = AUX_I2C_ACK; + } else { + ret = AUX_NACK; + break; + } + } + break; + /* + * Classic I2C transactions.. + */ + case READ_I2C: + case WRITE_I2C: + is_write = cmd == READ_I2C ? false : true; + if (i2c_bus_busy(i2c_bus)) { + i2c_end_transfer(i2c_bus); + } + + if (i2c_start_transfer(i2c_bus, address, is_write)) { + ret = AUX_I2C_NACK; + break; + } + + ret = AUX_I2C_ACK; + while (len > 0) { + if (i2c_send_recv(i2c_bus, data++, is_write) < 0) { + ret = AUX_I2C_NACK; + break; + } + len--; + } + i2c_end_transfer(i2c_bus); + break; + /* + * I2C MOT transactions. + * + * Here we send a start when: + * - We didn't start transaction yet. + * - We had a READ and we do a WRITE. + * - We changed the address. + */ + case WRITE_I2C_MOT: + case READ_I2C_MOT: + is_write = cmd == READ_I2C_MOT ? false : true; + ret = AUX_I2C_NACK; + if (!i2c_bus_busy(i2c_bus)) { + /* + * No transactions started.. + */ + if (i2c_start_transfer(i2c_bus, address, is_write)) { + break; + } + } else if ((address != bus->last_i2c_address) || + (bus->last_transaction != cmd)) { + /* + * Transaction started but we need to restart.. + */ + i2c_end_transfer(i2c_bus); + if (i2c_start_transfer(i2c_bus, address, is_write)) { + break; + } + } + + bus->last_transaction = cmd; + bus->last_i2c_address = address; + while (len > 0) { + if (i2c_send_recv(i2c_bus, data++, is_write) < 0) { + i2c_end_transfer(i2c_bus); + break; + } + len--; + } + if (len == 0) { + ret = AUX_I2C_ACK; + } + break; + default: + DPRINTF("Not implemented!\n"); + return AUX_NACK; + } + + DPRINTF("reply: %u\n", ret); + return ret; +} + +static const TypeInfo aux_bus_info = { + .name = TYPE_AUX_BUS, + .parent = TYPE_BUS, + .instance_size = sizeof(AUXBus), + .class_init = aux_bus_class_init +}; + +/* aux-i2c implementation (internal not public) */ +struct AUXTOI2CState { + /*< private >*/ + DeviceState parent_obj; + + /*< public >*/ + I2CBus *i2c_bus; +}; + +static void aux_bridge_init(Object *obj) +{ + AUXTOI2CState *s = AUXTOI2C(obj); + + s->i2c_bus = i2c_init_bus(DEVICE(obj), "aux-i2c"); +} + +static inline I2CBus *aux_bridge_get_i2c_bus(AUXTOI2CState *bridge) +{ + return bridge->i2c_bus; +} + +static const TypeInfo aux_to_i2c_type_info = { + .name = TYPE_AUXTOI2C, + .parent = TYPE_DEVICE, + .instance_size = sizeof(AUXTOI2CState), + .instance_init = aux_bridge_init +}; + +/* aux-slave implementation */ +static void aux_slave_dev_print(Monitor *mon, DeviceState *dev, int indent) +{ + AUXBus *bus = AUX_BUS(qdev_get_parent_bus(dev)); + AUXSlave *s; + + /* Don't print anything if the device is I2C "bridge". */ + if (aux_bus_is_bridge(bus, dev)) { + return; + } + + s = AUX_SLAVE(dev); + + monitor_printf(mon, "%*smemory " TARGET_FMT_plx "/" TARGET_FMT_plx "\n", + indent, "", + object_property_get_int(OBJECT(s->mmio), "addr", NULL), + memory_region_size(s->mmio)); +} + +DeviceState *aux_create_slave(AUXBus *bus, const char *type, uint32_t addr) +{ + DeviceState *dev; + + dev = DEVICE(object_new(type)); + assert(dev); + qdev_set_parent_bus(dev, &bus->qbus); + qdev_init_nofail(dev); + aux_bus_map_device(AUX_BUS(qdev_get_parent_bus(dev)), AUX_SLAVE(dev), addr); + return dev; +} + +void aux_init_mmio(AUXSlave *aux_slave, MemoryRegion *mmio) +{ + assert(!aux_slave->mmio); + aux_slave->mmio = mmio; +} + +static void aux_slave_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *k = DEVICE_CLASS(klass); + + set_bit(DEVICE_CATEGORY_MISC, k->categories); + k->bus_type = TYPE_AUX_BUS; +} + +static const TypeInfo aux_slave_type_info = { + .name = TYPE_AUX_SLAVE, + .parent = TYPE_DEVICE, + .instance_size = sizeof(AUXSlave), + .abstract = true, + .class_init = aux_slave_class_init, +}; + +static void aux_register_types(void) +{ + type_register_static(&aux_bus_info); + type_register_static(&aux_slave_type_info); + type_register_static(&aux_to_i2c_type_info); +} + +type_init(aux_register_types) diff --git a/include/hw/display/xlnx_dp.h b/include/hw/display/xlnx_dp.h index d3a03f1..ee046a5 100644 --- a/include/hw/display/xlnx_dp.h +++ b/include/hw/display/xlnx_dp.h @@ -24,7 +24,7 @@ #include "hw/sysbus.h" #include "ui/console.h" -#include "hw/misc/aux.h" +#include "hw/misc/auxbus.h" #include "hw/i2c/i2c.h" #include "hw/display/dpcd.h" #include "hw/i2c/i2c-ddc.h" diff --git a/include/hw/misc/aux.h b/include/hw/misc/aux.h deleted file mode 100644 index 759c3bf..0000000 --- a/include/hw/misc/aux.h +++ /dev/null @@ -1,128 +0,0 @@ -/* - * aux.h - * - * Copyright (C)2014 : GreenSocs Ltd - * http://www.greensocs.com/ , email: info@greensocs.com - * - * Developed by : - * Frederic Konrad - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option)any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, see . - * - */ - -#ifndef QEMU_AUX_H -#define QEMU_AUX_H - -#include "hw/qdev.h" - -typedef struct AUXBus AUXBus; -typedef struct AUXSlave AUXSlave; -typedef enum AUXCommand AUXCommand; -typedef enum AUXReply AUXReply; -typedef struct AUXTOI2CState AUXTOI2CState; - -enum AUXCommand { - WRITE_I2C = 0, - READ_I2C = 1, - WRITE_I2C_STATUS = 2, - WRITE_I2C_MOT = 4, - READ_I2C_MOT = 5, - WRITE_AUX = 8, - READ_AUX = 9 -}; - -enum AUXReply { - AUX_I2C_ACK = 0, - AUX_NACK = 1, - AUX_DEFER = 2, - AUX_I2C_NACK = 4, - AUX_I2C_DEFER = 8 -}; - -#define TYPE_AUX_BUS "aux-bus" -#define AUX_BUS(obj) OBJECT_CHECK(AUXBus, (obj), TYPE_AUX_BUS) - -struct AUXBus { - /* < private > */ - BusState qbus; - - /* < public > */ - AUXSlave *current_dev; - AUXSlave *dev; - uint32_t last_i2c_address; - AUXCommand last_transaction; - - AUXTOI2CState *bridge; - - MemoryRegion *aux_io; - AddressSpace aux_addr_space; -}; - -#define TYPE_AUX_SLAVE "aux-slave" -#define AUX_SLAVE(obj) \ - OBJECT_CHECK(AUXSlave, (obj), TYPE_AUX_SLAVE) - -struct AUXSlave { - /* < private > */ - DeviceState parent_obj; - - /* < public > */ - MemoryRegion *mmio; -}; - -/** - * aux_init_bus: Initialize an AUX bus. - * - * Returns the new AUX bus created. - * - * @parent The device where this bus is located. - * @name The name of the bus. - */ -AUXBus *aux_init_bus(DeviceState *parent, const char *name); - -/* - * aux_request: Make a request on the bus. - * - * Returns the reply of the request. - * - * @bus Ths bus where the request happen. - * @cmd The command requested. - * @address The 20bits address of the slave. - * @len The length of the read or write. - * @data The data array which will be filled or read during transfer. - */ -AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address, - uint8_t len, uint8_t *data); - -/* - * aux_get_i2c_bus: Get the i2c bus for I2C over AUX command. - * - * Returns the i2c bus associated to this AUX bus. - * - * @bus The AUX bus. - */ -I2CBus *aux_get_i2c_bus(AUXBus *bus); - -/* - * aux_init_mmio: Init an mmio for an AUX slave. - * - * @aux_slave The AUX slave. - * @mmio The mmio to be registered. - */ -void aux_init_mmio(AUXSlave *aux_slave, MemoryRegion *mmio); - -DeviceState *aux_create_slave(AUXBus *bus, const char *name, uint32_t addr); - -#endif /* !QEMU_AUX_H */ diff --git a/include/hw/misc/auxbus.h b/include/hw/misc/auxbus.h new file mode 100644 index 0000000..af39db7 --- /dev/null +++ b/include/hw/misc/auxbus.h @@ -0,0 +1,128 @@ +/* + * auxbus.h + * + * Copyright (C)2014 : GreenSocs Ltd + * http://www.greensocs.com/ , email: info@greensocs.com + * + * Developed by : + * Frederic Konrad + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option)any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + * + */ + +#ifndef QEMU_AUX_H +#define QEMU_AUX_H + +#include "hw/qdev.h" + +typedef struct AUXBus AUXBus; +typedef struct AUXSlave AUXSlave; +typedef enum AUXCommand AUXCommand; +typedef enum AUXReply AUXReply; +typedef struct AUXTOI2CState AUXTOI2CState; + +enum AUXCommand { + WRITE_I2C = 0, + READ_I2C = 1, + WRITE_I2C_STATUS = 2, + WRITE_I2C_MOT = 4, + READ_I2C_MOT = 5, + WRITE_AUX = 8, + READ_AUX = 9 +}; + +enum AUXReply { + AUX_I2C_ACK = 0, + AUX_NACK = 1, + AUX_DEFER = 2, + AUX_I2C_NACK = 4, + AUX_I2C_DEFER = 8 +}; + +#define TYPE_AUX_BUS "aux-bus" +#define AUX_BUS(obj) OBJECT_CHECK(AUXBus, (obj), TYPE_AUX_BUS) + +struct AUXBus { + /* < private > */ + BusState qbus; + + /* < public > */ + AUXSlave *current_dev; + AUXSlave *dev; + uint32_t last_i2c_address; + AUXCommand last_transaction; + + AUXTOI2CState *bridge; + + MemoryRegion *aux_io; + AddressSpace aux_addr_space; +}; + +#define TYPE_AUX_SLAVE "aux-slave" +#define AUX_SLAVE(obj) \ + OBJECT_CHECK(AUXSlave, (obj), TYPE_AUX_SLAVE) + +struct AUXSlave { + /* < private > */ + DeviceState parent_obj; + + /* < public > */ + MemoryRegion *mmio; +}; + +/** + * aux_init_bus: Initialize an AUX bus. + * + * Returns the new AUX bus created. + * + * @parent The device where this bus is located. + * @name The name of the bus. + */ +AUXBus *aux_init_bus(DeviceState *parent, const char *name); + +/* + * aux_request: Make a request on the bus. + * + * Returns the reply of the request. + * + * @bus Ths bus where the request happen. + * @cmd The command requested. + * @address The 20bits address of the slave. + * @len The length of the read or write. + * @data The data array which will be filled or read during transfer. + */ +AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address, + uint8_t len, uint8_t *data); + +/* + * aux_get_i2c_bus: Get the i2c bus for I2C over AUX command. + * + * Returns the i2c bus associated to this AUX bus. + * + * @bus The AUX bus. + */ +I2CBus *aux_get_i2c_bus(AUXBus *bus); + +/* + * aux_init_mmio: Init an mmio for an AUX slave. + * + * @aux_slave The AUX slave. + * @mmio The mmio to be registered. + */ +void aux_init_mmio(AUXSlave *aux_slave, MemoryRegion *mmio); + +DeviceState *aux_create_slave(AUXBus *bus, const char *name, uint32_t addr); + +#endif /* !QEMU_AUX_H */ -- cgit v1.1