diff options
Diffstat (limited to 'src/hw/i386/xen')
| -rw-r--r-- | src/hw/i386/xen/Makefile.objs | 1 | ||||
| -rw-r--r-- | src/hw/i386/xen/xen_apic.c | 98 | ||||
| -rw-r--r-- | src/hw/i386/xen/xen_platform.c | 453 | ||||
| -rw-r--r-- | src/hw/i386/xen/xen_pvdevice.c | 135 |
4 files changed, 687 insertions, 0 deletions
diff --git a/src/hw/i386/xen/Makefile.objs b/src/hw/i386/xen/Makefile.objs new file mode 100644 index 0000000..801a68d --- /dev/null +++ b/src/hw/i386/xen/Makefile.objs @@ -0,0 +1 @@ +obj-y += xen_platform.o xen_apic.o xen_pvdevice.o diff --git a/src/hw/i386/xen/xen_apic.c b/src/hw/i386/xen/xen_apic.c new file mode 100644 index 0000000..f5acd6a --- /dev/null +++ b/src/hw/i386/xen/xen_apic.c @@ -0,0 +1,98 @@ +/* + * Xen basic APIC support + * + * Copyright (c) 2012 Citrix + * + * Authors: + * Wei Liu <wei.liu2@citrix.com> + * + * This work is licensed under the terms of the GNU GPL version 2 or + * later. See the COPYING file in the top-level directory. + */ +#include "hw/i386/apic_internal.h" +#include "hw/pci/msi.h" +#include "hw/xen/xen.h" + +static uint64_t xen_apic_mem_read(void *opaque, hwaddr addr, + unsigned size) +{ + return ~(uint64_t)0; +} + +static void xen_apic_mem_write(void *opaque, hwaddr addr, + uint64_t data, unsigned size) +{ + if (size != sizeof(uint32_t)) { + fprintf(stderr, "Xen: APIC write data size = %d, invalid\n", size); + return; + } + + xen_hvm_inject_msi(addr, data); +} + +static const MemoryRegionOps xen_apic_io_ops = { + .read = xen_apic_mem_read, + .write = xen_apic_mem_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static void xen_apic_realize(DeviceState *dev, Error **errp) +{ + APICCommonState *s = APIC_COMMON(dev); + + s->vapic_control = 0; + memory_region_init_io(&s->io_memory, OBJECT(s), &xen_apic_io_ops, s, + "xen-apic-msi", APIC_SPACE_SIZE); + +#if defined(CONFIG_XEN_CTRL_INTERFACE_VERSION) \ + && CONFIG_XEN_CTRL_INTERFACE_VERSION >= 420 + msi_supported = true; +#endif +} + +static void xen_apic_set_base(APICCommonState *s, uint64_t val) +{ +} + +static void xen_apic_set_tpr(APICCommonState *s, uint8_t val) +{ +} + +static uint8_t xen_apic_get_tpr(APICCommonState *s) +{ + return 0; +} + +static void xen_apic_vapic_base_update(APICCommonState *s) +{ +} + +static void xen_apic_external_nmi(APICCommonState *s) +{ +} + +static void xen_apic_class_init(ObjectClass *klass, void *data) +{ + APICCommonClass *k = APIC_COMMON_CLASS(klass); + + k->realize = xen_apic_realize; + k->set_base = xen_apic_set_base; + k->set_tpr = xen_apic_set_tpr; + k->get_tpr = xen_apic_get_tpr; + k->vapic_base_update = xen_apic_vapic_base_update; + k->external_nmi = xen_apic_external_nmi; +} + +static const TypeInfo xen_apic_info = { + .name = "xen-apic", + .parent = TYPE_APIC_COMMON, + .instance_size = sizeof(APICCommonState), + .class_init = xen_apic_class_init, +}; + +static void xen_apic_register_types(void) +{ + type_register_static(&xen_apic_info); +} + +type_init(xen_apic_register_types) diff --git a/src/hw/i386/xen/xen_platform.c b/src/hw/i386/xen/xen_platform.c new file mode 100644 index 0000000..de83f4e --- /dev/null +++ b/src/hw/i386/xen/xen_platform.c @@ -0,0 +1,453 @@ +/* + * XEN platform pci device, formerly known as the event channel device + * + * Copyright (c) 2003-2004 Intel Corp. + * Copyright (c) 2006 XenSource + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "hw/hw.h" +#include "hw/i386/pc.h" +#include "hw/ide.h" +#include "hw/pci/pci.h" +#include "hw/irq.h" +#include "hw/xen/xen_common.h" +#include "hw/xen/xen_backend.h" +#include "trace.h" +#include "exec/address-spaces.h" +#include "sysemu/block-backend.h" +#include "qemu/error-report.h" + +#include <xenguest.h> + +//#define DEBUG_PLATFORM + +#ifdef DEBUG_PLATFORM +#define DPRINTF(fmt, ...) do { \ + fprintf(stderr, "xen_platform: " fmt, ## __VA_ARGS__); \ +} while (0) +#else +#define DPRINTF(fmt, ...) do { } while (0) +#endif + +#define PFFLAG_ROM_LOCK 1 /* Sets whether ROM memory area is RW or RO */ + +typedef struct PCIXenPlatformState { + /*< private >*/ + PCIDevice parent_obj; + /*< public >*/ + + MemoryRegion fixed_io; + MemoryRegion bar; + MemoryRegion mmio_bar; + uint8_t flags; /* used only for version_id == 2 */ + int drivers_blacklisted; + uint16_t driver_product_version; + + /* Log from guest drivers */ + char log_buffer[4096]; + int log_buffer_off; +} PCIXenPlatformState; + +#define TYPE_XEN_PLATFORM "xen-platform" +#define XEN_PLATFORM(obj) \ + OBJECT_CHECK(PCIXenPlatformState, (obj), TYPE_XEN_PLATFORM) + +#define XEN_PLATFORM_IOPORT 0x10 + +/* Send bytes to syslog */ +static void log_writeb(PCIXenPlatformState *s, char val) +{ + if (val == '\n' || s->log_buffer_off == sizeof(s->log_buffer) - 1) { + /* Flush buffer */ + s->log_buffer[s->log_buffer_off] = 0; + trace_xen_platform_log(s->log_buffer); + s->log_buffer_off = 0; + } else { + s->log_buffer[s->log_buffer_off++] = val; + } +} + +/* Xen Platform, Fixed IOPort */ +#define UNPLUG_ALL_IDE_DISKS 1 +#define UNPLUG_ALL_NICS 2 +#define UNPLUG_AUX_IDE_DISKS 4 + +static void unplug_nic(PCIBus *b, PCIDevice *d, void *o) +{ + /* We have to ignore passthrough devices */ + if (pci_get_word(d->config + PCI_CLASS_DEVICE) == + PCI_CLASS_NETWORK_ETHERNET + && strcmp(d->name, "xen-pci-passthrough") != 0) { + object_unparent(OBJECT(d)); + } +} + +static void pci_unplug_nics(PCIBus *bus) +{ + pci_for_each_device(bus, 0, unplug_nic, NULL); +} + +static void unplug_disks(PCIBus *b, PCIDevice *d, void *o) +{ + /* We have to ignore passthrough devices */ + if (pci_get_word(d->config + PCI_CLASS_DEVICE) == + PCI_CLASS_STORAGE_IDE + && strcmp(d->name, "xen-pci-passthrough") != 0) { + pci_piix3_xen_ide_unplug(DEVICE(d)); + } +} + +static void pci_unplug_disks(PCIBus *bus) +{ + pci_for_each_device(bus, 0, unplug_disks, NULL); +} + +static void platform_fixed_ioport_writew(void *opaque, uint32_t addr, uint32_t val) +{ + PCIXenPlatformState *s = opaque; + + switch (addr) { + case 0: { + PCIDevice *pci_dev = PCI_DEVICE(s); + /* Unplug devices. Value is a bitmask of which devices to + unplug, with bit 0 the IDE devices, bit 1 the network + devices, and bit 2 the non-primary-master IDE devices. */ + if (val & UNPLUG_ALL_IDE_DISKS) { + DPRINTF("unplug disks\n"); + blk_drain_all(); + blk_flush_all(); + pci_unplug_disks(pci_dev->bus); + } + if (val & UNPLUG_ALL_NICS) { + DPRINTF("unplug nics\n"); + pci_unplug_nics(pci_dev->bus); + } + if (val & UNPLUG_AUX_IDE_DISKS) { + DPRINTF("unplug auxiliary disks not supported\n"); + } + break; + } + case 2: + switch (val) { + case 1: + DPRINTF("Citrix Windows PV drivers loaded in guest\n"); + break; + case 0: + DPRINTF("Guest claimed to be running PV product 0?\n"); + break; + default: + DPRINTF("Unknown PV product %d loaded in guest\n", val); + break; + } + s->driver_product_version = val; + break; + } +} + +static void platform_fixed_ioport_writel(void *opaque, uint32_t addr, + uint32_t val) +{ + switch (addr) { + case 0: + /* PV driver version */ + break; + } +} + +static void platform_fixed_ioport_writeb(void *opaque, uint32_t addr, uint32_t val) +{ + PCIXenPlatformState *s = opaque; + + switch (addr) { + case 0: /* Platform flags */ { + hvmmem_type_t mem_type = (val & PFFLAG_ROM_LOCK) ? + HVMMEM_ram_ro : HVMMEM_ram_rw; + if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type, 0xc0, 0x40)) { + DPRINTF("unable to change ro/rw state of ROM memory area!\n"); + } else { + s->flags = val & PFFLAG_ROM_LOCK; + DPRINTF("changed ro/rw state of ROM memory area. now is %s state.\n", + (mem_type == HVMMEM_ram_ro ? "ro":"rw")); + } + break; + } + case 2: + log_writeb(s, val); + break; + } +} + +static uint32_t platform_fixed_ioport_readw(void *opaque, uint32_t addr) +{ + PCIXenPlatformState *s = opaque; + + switch (addr) { + case 0: + if (s->drivers_blacklisted) { + /* The drivers will recognise this magic number and refuse + * to do anything. */ + return 0xd249; + } else { + /* Magic value so that you can identify the interface. */ + return 0x49d2; + } + default: + return 0xffff; + } +} + +static uint32_t platform_fixed_ioport_readb(void *opaque, uint32_t addr) +{ + PCIXenPlatformState *s = opaque; + + switch (addr) { + case 0: + /* Platform flags */ + return s->flags; + case 2: + /* Version number */ + return 1; + default: + return 0xff; + } +} + +static void platform_fixed_ioport_reset(void *opaque) +{ + PCIXenPlatformState *s = opaque; + + platform_fixed_ioport_writeb(s, 0, 0); +} + +static uint64_t platform_fixed_ioport_read(void *opaque, + hwaddr addr, + unsigned size) +{ + switch (size) { + case 1: + return platform_fixed_ioport_readb(opaque, addr); + case 2: + return platform_fixed_ioport_readw(opaque, addr); + default: + return -1; + } +} + +static void platform_fixed_ioport_write(void *opaque, hwaddr addr, + + uint64_t val, unsigned size) +{ + switch (size) { + case 1: + platform_fixed_ioport_writeb(opaque, addr, val); + break; + case 2: + platform_fixed_ioport_writew(opaque, addr, val); + break; + case 4: + platform_fixed_ioport_writel(opaque, addr, val); + break; + } +} + + +static const MemoryRegionOps platform_fixed_io_ops = { + .read = platform_fixed_ioport_read, + .write = platform_fixed_ioport_write, + .valid = { + .unaligned = true, + }, + .impl = { + .min_access_size = 1, + .max_access_size = 4, + .unaligned = true, + }, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static void platform_fixed_ioport_init(PCIXenPlatformState* s) +{ + memory_region_init_io(&s->fixed_io, OBJECT(s), &platform_fixed_io_ops, s, + "xen-fixed", 16); + memory_region_add_subregion(get_system_io(), XEN_PLATFORM_IOPORT, + &s->fixed_io); +} + +/* Xen Platform PCI Device */ + +static uint64_t xen_platform_ioport_readb(void *opaque, hwaddr addr, + unsigned int size) +{ + if (addr == 0) { + return platform_fixed_ioport_readb(opaque, 0); + } else { + return ~0u; + } +} + +static void xen_platform_ioport_writeb(void *opaque, hwaddr addr, + uint64_t val, unsigned int size) +{ + PCIXenPlatformState *s = opaque; + + switch (addr) { + case 0: /* Platform flags */ + platform_fixed_ioport_writeb(opaque, 0, (uint32_t)val); + break; + case 8: + log_writeb(s, (uint32_t)val); + break; + default: + break; + } +} + +static const MemoryRegionOps xen_pci_io_ops = { + .read = xen_platform_ioport_readb, + .write = xen_platform_ioport_writeb, + .impl.min_access_size = 1, + .impl.max_access_size = 1, +}; + +static void platform_ioport_bar_setup(PCIXenPlatformState *d) +{ + memory_region_init_io(&d->bar, OBJECT(d), &xen_pci_io_ops, d, + "xen-pci", 0x100); +} + +static uint64_t platform_mmio_read(void *opaque, hwaddr addr, + unsigned size) +{ + DPRINTF("Warning: attempted read from physical address " + "0x" TARGET_FMT_plx " in xen platform mmio space\n", addr); + + return 0; +} + +static void platform_mmio_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + DPRINTF("Warning: attempted write of 0x%"PRIx64" to physical " + "address 0x" TARGET_FMT_plx " in xen platform mmio space\n", + val, addr); +} + +static const MemoryRegionOps platform_mmio_handler = { + .read = &platform_mmio_read, + .write = &platform_mmio_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static void platform_mmio_setup(PCIXenPlatformState *d) +{ + memory_region_init_io(&d->mmio_bar, OBJECT(d), &platform_mmio_handler, d, + "xen-mmio", 0x1000000); +} + +static int xen_platform_post_load(void *opaque, int version_id) +{ + PCIXenPlatformState *s = opaque; + + platform_fixed_ioport_writeb(s, 0, s->flags); + + return 0; +} + +static const VMStateDescription vmstate_xen_platform = { + .name = "platform", + .version_id = 4, + .minimum_version_id = 4, + .post_load = xen_platform_post_load, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(parent_obj, PCIXenPlatformState), + VMSTATE_UINT8(flags, PCIXenPlatformState), + VMSTATE_END_OF_LIST() + } +}; + +static void xen_platform_realize(PCIDevice *dev, Error **errp) +{ + PCIXenPlatformState *d = XEN_PLATFORM(dev); + uint8_t *pci_conf; + + /* Device will crash on reset if xen is not initialized */ + if (!xen_enabled()) { + error_setg(errp, "xen-platform device requires the Xen accelerator"); + return; + } + + pci_conf = dev->config; + + pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY); + + pci_config_set_prog_interface(pci_conf, 0); + + pci_conf[PCI_INTERRUPT_PIN] = 1; + + platform_ioport_bar_setup(d); + pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->bar); + + /* reserve 16MB mmio address for share memory*/ + platform_mmio_setup(d); + pci_register_bar(dev, 1, PCI_BASE_ADDRESS_MEM_PREFETCH, + &d->mmio_bar); + + platform_fixed_ioport_init(d); +} + +static void platform_reset(DeviceState *dev) +{ + PCIXenPlatformState *s = XEN_PLATFORM(dev); + + platform_fixed_ioport_reset(s); +} + +static void xen_platform_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->realize = xen_platform_realize; + k->vendor_id = PCI_VENDOR_ID_XEN; + k->device_id = PCI_DEVICE_ID_XEN_PLATFORM; + k->class_id = PCI_CLASS_OTHERS << 8 | 0x80; + k->subsystem_vendor_id = PCI_VENDOR_ID_XEN; + k->subsystem_id = PCI_DEVICE_ID_XEN_PLATFORM; + k->revision = 1; + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + dc->desc = "XEN platform pci device"; + dc->reset = platform_reset; + dc->vmsd = &vmstate_xen_platform; +} + +static const TypeInfo xen_platform_info = { + .name = TYPE_XEN_PLATFORM, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(PCIXenPlatformState), + .class_init = xen_platform_class_init, +}; + +static void xen_platform_register_types(void) +{ + type_register_static(&xen_platform_info); +} + +type_init(xen_platform_register_types) diff --git a/src/hw/i386/xen/xen_pvdevice.c b/src/hw/i386/xen/xen_pvdevice.c new file mode 100644 index 0000000..c218947 --- /dev/null +++ b/src/hw/i386/xen/xen_pvdevice.c @@ -0,0 +1,135 @@ +/* Copyright (c) Citrix Systems Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, + * with or without modification, are permitted provided + * that the following conditions are met: + * + * * Redistributions of source code must retain the above + * copyright notice, this list of conditions and the + * following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the + * following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "hw/hw.h" +#include "hw/pci/pci.h" +#include "trace.h" + +#define TYPE_XEN_PV_DEVICE "xen-pvdevice" + +#define XEN_PV_DEVICE(obj) \ + OBJECT_CHECK(XenPVDevice, (obj), TYPE_XEN_PV_DEVICE) + +typedef struct XenPVDevice { + /*< private >*/ + PCIDevice parent_obj; + /*< public >*/ + uint16_t vendor_id; + uint16_t device_id; + uint8_t revision; + uint32_t size; + MemoryRegion mmio; +} XenPVDevice; + +static uint64_t xen_pv_mmio_read(void *opaque, hwaddr addr, + unsigned size) +{ + trace_xen_pv_mmio_read(addr); + + return ~(uint64_t)0; +} + +static void xen_pv_mmio_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + trace_xen_pv_mmio_write(addr); +} + +static const MemoryRegionOps xen_pv_mmio_ops = { + .read = &xen_pv_mmio_read, + .write = &xen_pv_mmio_write, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static int xen_pv_init(PCIDevice *pci_dev) +{ + XenPVDevice *d = XEN_PV_DEVICE(pci_dev); + uint8_t *pci_conf; + + /* device-id property must always be supplied */ + if (d->device_id == 0xffff) + return -1; + + pci_conf = pci_dev->config; + + pci_set_word(pci_conf + PCI_VENDOR_ID, d->vendor_id); + pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, d->vendor_id); + pci_set_word(pci_conf + PCI_DEVICE_ID, d->device_id); + pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, d->device_id); + pci_set_byte(pci_conf + PCI_REVISION_ID, d->revision); + + pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_MEMORY); + + pci_config_set_prog_interface(pci_conf, 0); + + pci_conf[PCI_INTERRUPT_PIN] = 1; + + memory_region_init_io(&d->mmio, NULL, &xen_pv_mmio_ops, d, + "mmio", d->size); + + pci_register_bar(pci_dev, 1, PCI_BASE_ADDRESS_MEM_PREFETCH, + &d->mmio); + + return 0; +} + +static Property xen_pv_props[] = { + DEFINE_PROP_UINT16("vendor-id", XenPVDevice, vendor_id, PCI_VENDOR_ID_XEN), + DEFINE_PROP_UINT16("device-id", XenPVDevice, device_id, 0xffff), + DEFINE_PROP_UINT8("revision", XenPVDevice, revision, 0x01), + DEFINE_PROP_UINT32("size", XenPVDevice, size, 0x400000), + DEFINE_PROP_END_OF_LIST() +}; + +static void xen_pv_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->init = xen_pv_init; + k->class_id = PCI_CLASS_SYSTEM_OTHER; + dc->desc = "Xen PV Device"; + dc->props = xen_pv_props; +} + +static const TypeInfo xen_pv_type_info = { + .name = TYPE_XEN_PV_DEVICE, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(XenPVDevice), + .class_init = xen_pv_class_init, +}; + +static void xen_pv_register_types(void) +{ + type_register_static(&xen_pv_type_info); +} + +type_init(xen_pv_register_types) |
