diff options
| -rw-r--r-- | hw/Makefile.objs | 2 | ||||
| -rw-r--r-- | hw/smbus_ich9.c | 159 |
2 files changed, 160 insertions, 1 deletions
diff --git a/hw/Makefile.objs b/hw/Makefile.objs index b863b3145a..35773de1e6 100644 --- a/hw/Makefile.objs +++ b/hw/Makefile.objs @@ -28,7 +28,7 @@ common-obj-$(CONFIG_I8254) += i8254_common.o i8254.o common-obj-$(CONFIG_PCSPK) += pcspk.o common-obj-$(CONFIG_PCKBD) += pckbd.o common-obj-$(CONFIG_FDC) += fdc.o -common-obj-$(CONFIG_ACPI) += acpi.o acpi_piix4.o acpi_ich9.o +common-obj-$(CONFIG_ACPI) += acpi.o acpi_piix4.o acpi_ich9.o smbus_ich9.o common-obj-$(CONFIG_APM) += pm_smbus.o apm.o common-obj-$(CONFIG_DMA) += dma.o common-obj-$(CONFIG_I82374) += i82374.o diff --git a/hw/smbus_ich9.c b/hw/smbus_ich9.c new file mode 100644 index 0000000000..6940583bb6 --- /dev/null +++ b/hw/smbus_ich9.c @@ -0,0 +1,159 @@ +/* + * ACPI implementation + * + * Copyright (c) 2006 Fabrice Bellard + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2 as published by the Free Software Foundation. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/> + */ +/* + * Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp> + * VA Linux Systems Japan K.K. + * Copyright (C) 2012 Jason Baron <jbaron@redhat.com> + * + * This is based on acpi.c, but heavily rewritten. + */ +#include "hw.h" +#include "pc.h" +#include "pm_smbus.h" +#include "pci.h" +#include "sysemu.h" +#include "i2c.h" +#include "smbus.h" + +#include "ich9.h" + +#define TYPE_ICH9_SMB_DEVICE "ICH9 SMB" +#define ICH9_SMB_DEVICE(obj) \ + OBJECT_CHECK(ICH9SMBState, (obj), TYPE_ICH9_SMB_DEVICE) + +typedef struct ICH9SMBState { + PCIDevice dev; + + PMSMBus smb; + MemoryRegion mem_bar; +} ICH9SMBState; + +static const VMStateDescription vmstate_ich9_smbus = { + .name = "ich9_smb", + .version_id = 1, + .minimum_version_id = 1, + .minimum_version_id_old = 1, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(dev, struct ICH9SMBState), + VMSTATE_END_OF_LIST() + } +}; + +static void ich9_smb_ioport_writeb(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + ICH9SMBState *s = opaque; + uint8_t hostc = s->dev.config[ICH9_SMB_HOSTC]; + + if ((hostc & ICH9_SMB_HOSTC_HST_EN) && !(hostc & ICH9_SMB_HOSTC_I2C_EN)) { + uint64_t offset = addr - s->dev.io_regions[ICH9_SMB_SMB_BASE_BAR].addr; + smb_ioport_writeb(&s->smb, offset, val); + } +} + +static uint64_t ich9_smb_ioport_readb(void *opaque, hwaddr addr, + unsigned size) +{ + ICH9SMBState *s = opaque; + uint8_t hostc = s->dev.config[ICH9_SMB_HOSTC]; + + if ((hostc & ICH9_SMB_HOSTC_HST_EN) && !(hostc & ICH9_SMB_HOSTC_I2C_EN)) { + uint64_t offset = addr - s->dev.io_regions[ICH9_SMB_SMB_BASE_BAR].addr; + return smb_ioport_readb(&s->smb, offset); + } + + return 0xff; +} + +static const MemoryRegionOps lpc_smb_mmio_ops = { + .read = ich9_smb_ioport_readb, + .write = ich9_smb_ioport_writeb, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .min_access_size = 1, + .max_access_size = 1, + }, +}; + +static int ich9_smbus_initfn(PCIDevice *d) +{ + ICH9SMBState *s = ICH9_SMB_DEVICE(d); + + /* TODO? D31IP.SMIP in chipset configuration space */ + pci_config_set_interrupt_pin(d->config, 0x01); /* interrupt pin 1 */ + + pci_set_byte(d->config + ICH9_SMB_HOSTC, 0); + + /* + * update parameters based on + * paralell_hds[0] + * serial_hds[0] + * serial_hds[0] + * fdc + * + * Is there any OS that depends on them? + */ + + /* TODO smb_io_base */ + pci_set_byte(d->config + ICH9_SMB_HOSTC, 0); + /* TODO bar0, bar1: 64bit BAR support*/ + + memory_region_init_io(&s->mem_bar, &lpc_smb_mmio_ops, s, "ich9-smbus-bar", + ICH9_SMB_SMB_BASE_SIZE); + pci_register_bar(d, ICH9_SMB_SMB_BASE_BAR, PCI_BASE_ADDRESS_SPACE_IO, + &s->mem_bar); + pm_smbus_init(&d->qdev, &s->smb); + return 0; +} + +static void ich9_smb_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->vendor_id = PCI_VENDOR_ID_INTEL; + k->device_id = PCI_DEVICE_ID_INTEL_ICH9_6; + k->revision = ICH9_A2_SMB_REVISION; + k->class_id = PCI_CLASS_SERIAL_SMBUS; + dc->no_user = 1; + dc->vmsd = &vmstate_ich9_smbus; + dc->desc = "ICH9 SMBUS Bridge"; + k->init = ich9_smbus_initfn; +} + +i2c_bus *ich9_smb_init(PCIBus *bus, int devfn, uint32_t smb_io_base) +{ + PCIDevice *d = + pci_create_simple_multifunction(bus, devfn, true, TYPE_ICH9_SMB_DEVICE); + ICH9SMBState *s = ICH9_SMB_DEVICE(d); + return s->smb.smbus; +} + +static const TypeInfo ich9_smb_info = { + .name = TYPE_ICH9_SMB_DEVICE, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(ICH9SMBState), + .class_init = ich9_smb_class_init, +}; + +static void ich9_smb_register(void) +{ + type_register_static(&ich9_smb_info); +} + +type_init(ich9_smb_register); |