diff options
Diffstat (limited to 'hw/xen')
| -rw-r--r-- | hw/xen/Makefile.objs | 2 | ||||
| -rw-r--r-- | hw/xen/trace-events | 1 | ||||
| -rw-r--r-- | hw/xen/xen-common.c | 169 | ||||
| -rw-r--r-- | hw/xen/xen_backend.c | 5 |
4 files changed, 174 insertions, 3 deletions
diff --git a/hw/xen/Makefile.objs b/hw/xen/Makefile.objs index 4be3ec9c77..64a70bc6cb 100644 --- a/hw/xen/Makefile.objs +++ b/hw/xen/Makefile.objs @@ -1,5 +1,5 @@ # xen backend driver support -common-obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o xen_pvdev.o +common-obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o xen_pvdev.o xen-common.o obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen-host-pci-device.o obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen_pt.o xen_pt_config_init.o xen_pt_graphics.o xen_pt_msi.o diff --git a/hw/xen/trace-events b/hw/xen/trace-events index c4fb6f1aea..5615dce2c1 100644 --- a/hw/xen/trace-events +++ b/hw/xen/trace-events @@ -11,3 +11,4 @@ xen_map_portio_range(uint32_t id, uint64_t start_addr, uint64_t end_addr) "id: % xen_unmap_portio_range(uint32_t id, uint64_t start_addr, uint64_t end_addr) "id: %u start: %#"PRIx64" end: %#"PRIx64 xen_map_pcidev(uint32_t id, uint8_t bus, uint8_t dev, uint8_t func) "id: %u bdf: %02x.%02x.%02x" xen_unmap_pcidev(uint32_t id, uint8_t bus, uint8_t dev, uint8_t func) "id: %u bdf: %02x.%02x.%02x" +xen_domid_restrict(int err) "err: %u" diff --git a/hw/xen/xen-common.c b/hw/xen/xen-common.c new file mode 100644 index 0000000000..ae76150e8a --- /dev/null +++ b/hw/xen/xen-common.c @@ -0,0 +1,169 @@ +/* + * Copyright (C) 2014 Citrix Systems UK Ltd. + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + * Contributions after 2012-01-13 are licensed under the terms of the + * GNU GPL, version 2 or (at your option) any later version. + */ + +#include "qemu/osdep.h" +#include "hw/xen/xen_backend.h" +#include "qmp-commands.h" +#include "sysemu/char.h" +#include "sysemu/accel.h" +#include "migration/migration.h" + +//#define DEBUG_XEN + +#ifdef DEBUG_XEN +#define DPRINTF(fmt, ...) \ + do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0) +#else +#define DPRINTF(fmt, ...) \ + do { } while (0) +#endif + +xc_interface *xen_xc; +xenforeignmemory_handle *xen_fmem; +xendevicemodel_handle *xen_dmod; + +static int store_dev_info(int domid, Chardev *cs, const char *string) +{ + struct xs_handle *xs = NULL; + char *path = NULL; + char *newpath = NULL; + char *pts = NULL; + int ret = -1; + + /* Only continue if we're talking to a pty. */ + if (strncmp(cs->filename, "pty:", 4)) { + return 0; + } + pts = cs->filename + 4; + + /* We now have everything we need to set the xenstore entry. */ + xs = xs_open(0); + if (xs == NULL) { + fprintf(stderr, "Could not contact XenStore\n"); + goto out; + } + + path = xs_get_domain_path(xs, domid); + if (path == NULL) { + fprintf(stderr, "xs_get_domain_path() error\n"); + goto out; + } + newpath = realloc(path, (strlen(path) + strlen(string) + + strlen("/tty") + 1)); + if (newpath == NULL) { + fprintf(stderr, "realloc error\n"); + goto out; + } + path = newpath; + + strcat(path, string); + strcat(path, "/tty"); + if (!xs_write(xs, XBT_NULL, path, pts, strlen(pts))) { + fprintf(stderr, "xs_write for '%s' fail", string); + goto out; + } + ret = 0; + +out: + free(path); + xs_close(xs); + + return ret; +} + +void xenstore_store_pv_console_info(int i, Chardev *chr) +{ + if (i == 0) { + store_dev_info(xen_domid, chr, "/console"); + } else { + char buf[32]; + snprintf(buf, sizeof(buf), "/device/console/%d", i); + store_dev_info(xen_domid, chr, buf); + } +} + + +static void xenstore_record_dm_state(struct xs_handle *xs, const char *state) +{ + char path[50]; + + if (xs == NULL) { + fprintf(stderr, "xenstore connection not initialized\n"); + exit(1); + } + + snprintf(path, sizeof (path), "device-model/%u/state", xen_domid); + if (!xs_write(xs, XBT_NULL, path, state, strlen(state))) { + fprintf(stderr, "error recording dm state\n"); + exit(1); + } +} + + +static void xen_change_state_handler(void *opaque, int running, + RunState state) +{ + if (running) { + /* record state running */ + xenstore_record_dm_state(xenstore, "running"); + } +} + +static int xen_init(MachineState *ms) +{ + xen_xc = xc_interface_open(0, 0, 0); + if (xen_xc == NULL) { + xen_pv_printf(NULL, 0, "can't open xen interface\n"); + return -1; + } + xen_fmem = xenforeignmemory_open(0, 0); + if (xen_fmem == NULL) { + xen_pv_printf(NULL, 0, "can't open xen fmem interface\n"); + xc_interface_close(xen_xc); + return -1; + } + xen_dmod = xendevicemodel_open(0, 0); + if (xen_dmod == NULL) { + xen_pv_printf(NULL, 0, "can't open xen devicemodel interface\n"); + xenforeignmemory_close(xen_fmem); + xc_interface_close(xen_xc); + return -1; + } + qemu_add_vm_change_state_handler(xen_change_state_handler, NULL); + + global_state_set_optional(); + savevm_skip_configuration(); + savevm_skip_section_footers(); + + return 0; +} + +static void xen_accel_class_init(ObjectClass *oc, void *data) +{ + AccelClass *ac = ACCEL_CLASS(oc); + ac->name = "Xen"; + ac->init_machine = xen_init; + ac->allowed = &xen_allowed; +} + +#define TYPE_XEN_ACCEL ACCEL_CLASS_NAME("xen") + +static const TypeInfo xen_accel_type = { + .name = TYPE_XEN_ACCEL, + .parent = TYPE_ACCEL, + .class_init = xen_accel_class_init, +}; + +static void xen_type_init(void) +{ + type_register_static(&xen_accel_type); +} + +type_init(xen_type_init); diff --git a/hw/xen/xen_backend.c b/hw/xen/xen_backend.c index 6c21c37d68..c85f1637e4 100644 --- a/hw/xen/xen_backend.c +++ b/hw/xen/xen_backend.c @@ -43,8 +43,6 @@ BusState *xen_sysbus; /* ------------------------------------------------------------- */ /* public */ -xc_interface *xen_xc = NULL; -xenforeignmemory_handle *xen_fmem = NULL; struct xs_handle *xenstore = NULL; const char *xen_protocol; @@ -585,6 +583,9 @@ void xen_be_register_common(void) xen_be_register("console", &xen_console_ops); xen_be_register("vkbd", &xen_kbdmouse_ops); xen_be_register("qdisk", &xen_blkdev_ops); +#ifdef CONFIG_VIRTFS + xen_be_register("9pfs", &xen_9pfs_ops); +#endif #ifdef CONFIG_USB_LIBUSB xen_be_register("qusb", &xen_usb_ops); #endif |