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author | Anthony PERARD <anthony.perard@citrix.com> | 2012-06-21 15:36:23 +0000 |
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committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2012-06-21 16:06:10 +0000 |
commit | 679042f0e1eac0af1e03759efe8761e7b4422588 (patch) | |
tree | 04060edbd6e97fad60a0f4b0f99964ceb2a161ae /hw/qdev-properties.c | |
parent | 7aa8cbb9211a7c93d37b79502915df5757d2fb17 (diff) | |
download | qemu-679042f0e1eac0af1e03759efe8761e7b4422588.zip qemu-679042f0e1eac0af1e03759efe8761e7b4422588.tar.gz qemu-679042f0e1eac0af1e03759efe8761e7b4422588.tar.bz2 |
qdev-properties: Introduce pci-host-devaddr.
This new property will be used to specify a host pci device address.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Diffstat (limited to 'hw/qdev-properties.c')
-rw-r--r-- | hw/qdev-properties.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/hw/qdev-properties.c b/hw/qdev-properties.c index 099a7aa..0b89462 100644 --- a/hw/qdev-properties.c +++ b/hw/qdev-properties.c @@ -899,6 +899,113 @@ PropertyInfo qdev_prop_blocksize = { .set = set_blocksize, }; +/* --- pci host address --- */ + +static void get_pci_host_devaddr(Object *obj, Visitor *v, void *opaque, + const char *name, Error **errp) +{ + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop); + char buffer[] = "xxxx:xx:xx.x"; + char *p = buffer; + int rc = 0; + + rc = snprintf(buffer, sizeof(buffer), "%04x:%02x:%02x.%d", + addr->domain, addr->bus, addr->slot, addr->function); + assert(rc == sizeof(buffer) - 1); + + visit_type_str(v, &p, name, errp); +} + +/* + * Parse [<domain>:]<bus>:<slot>.<func> + * if <domain> is not supplied, it's assumed to be 0. + */ +static void set_pci_host_devaddr(Object *obj, Visitor *v, void *opaque, + const char *name, Error **errp) +{ + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop); + Error *local_err = NULL; + char *str, *p; + char *e; + unsigned long val; + unsigned long dom = 0, bus = 0; + unsigned int slot = 0, func = 0; + + if (dev->state != DEV_STATE_CREATED) { + error_set(errp, QERR_PERMISSION_DENIED); + return; + } + + visit_type_str(v, &str, name, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + p = str; + val = strtoul(p, &e, 16); + if (e == p || *e != ':') { + goto inval; + } + bus = val; + + p = e + 1; + val = strtoul(p, &e, 16); + if (e == p) { + goto inval; + } + if (*e == ':') { + dom = bus; + bus = val; + p = e + 1; + val = strtoul(p, &e, 16); + if (e == p) { + goto inval; + } + } + slot = val; + + if (*e != '.') { + goto inval; + } + p = e + 1; + val = strtoul(p, &e, 10); + if (e == p) { + goto inval; + } + func = val; + + if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) { + goto inval; + } + + if (*e) { + goto inval; + } + + addr->domain = dom; + addr->bus = bus; + addr->slot = slot; + addr->function = func; + + g_free(str); + return; + +inval: + error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str); + g_free(str); +} + +PropertyInfo qdev_prop_pci_host_devaddr = { + .name = "pci-host-devaddr", + .get = get_pci_host_devaddr, + .set = set_pci_host_devaddr, +}; + /* --- public helpers --- */ static Property *qdev_prop_walk(Property *props, const char *name) |