diff options
| -rw-r--r-- | Documentation/ABI/stable/sysfs-bus-vmbus | 14 | ||||
| -rw-r--r-- | drivers/hv/channel_mgmt.c | 166 | ||||
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 21 | ||||
| -rw-r--r-- | include/linux/hyperv.h | 28 |
4 files changed, 186 insertions, 43 deletions
diff --git a/Documentation/ABI/stable/sysfs-bus-vmbus b/Documentation/ABI/stable/sysfs-bus-vmbus index 636e938d5e33..5d0125f7bcaf 100644 --- a/Documentation/ABI/stable/sysfs-bus-vmbus +++ b/Documentation/ABI/stable/sysfs-bus-vmbus @@ -27,3 +27,17 @@ Description: The mapping of which primary/sub channels are bound to which Virtual Processors. Format: <channel's child_relid:the bound cpu's number> Users: tools/hv/lsvmbus + +What: /sys/bus/vmbus/devices/vmbus_*/device +Date: Dec. 2015 +KernelVersion: 4.5 +Contact: K. Y. Srinivasan <kys@microsoft.com> +Description: The 16 bit device ID of the device +Users: tools/hv/lsvmbus and user level RDMA libraries + +What: /sys/bus/vmbus/devices/vmbus_*/vendor +Date: Dec. 2015 +KernelVersion: 4.5 +Contact: K. Y. Srinivasan <kys@microsoft.com> +Description: The 16 bit vendor ID of the device +Users: tools/hv/lsvmbus and user level RDMA libraries diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 1c1ad47042c5..107d72f9834d 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -32,8 +32,122 @@ #include "hyperv_vmbus.h" -static void init_vp_index(struct vmbus_channel *channel, - const uuid_le *type_guid); +static void init_vp_index(struct vmbus_channel *channel, u16 dev_type); + +static const struct vmbus_device vmbus_devs[] = { + /* IDE */ + { .dev_type = HV_IDE, + HV_IDE_GUID, + .perf_device = true, + }, + + /* SCSI */ + { .dev_type = HV_SCSI, + HV_SCSI_GUID, + .perf_device = true, + }, + + /* Fibre Channel */ + { .dev_type = HV_FC, + HV_SYNTHFC_GUID, + .perf_device = true, + }, + + /* Synthetic NIC */ + { .dev_type = HV_NIC, + HV_NIC_GUID, + .perf_device = true, + }, + + /* Network Direct */ + { .dev_type = HV_ND, + HV_ND_GUID, + .perf_device = true, + }, + + /* PCIE */ + { .dev_type = HV_PCIE, + HV_PCIE_GUID, + .perf_device = true, + }, + + /* Synthetic Frame Buffer */ + { .dev_type = HV_FB, + HV_SYNTHVID_GUID, + .perf_device = false, + }, + + /* Synthetic Keyboard */ + { .dev_type = HV_KBD, + HV_KBD_GUID, + .perf_device = false, + }, + + /* Synthetic MOUSE */ + { .dev_type = HV_MOUSE, + HV_MOUSE_GUID, + .perf_device = false, + }, + + /* KVP */ + { .dev_type = HV_KVP, + HV_KVP_GUID, + .perf_device = false, + }, + + /* Time Synch */ + { .dev_type = HV_TS, + HV_TS_GUID, + .perf_device = false, + }, + + /* Heartbeat */ + { .dev_type = HV_HB, + HV_HEART_BEAT_GUID, + .perf_device = false, + }, + + /* Shutdown */ + { .dev_type = HV_SHUTDOWN, + HV_SHUTDOWN_GUID, + .perf_device = false, + }, + + /* File copy */ + { .dev_type = HV_FCOPY, + HV_FCOPY_GUID, + .perf_device = false, + }, + + /* Backup */ + { .dev_type = HV_BACKUP, + HV_VSS_GUID, + .perf_device = false, + }, + + /* Dynamic Memory */ + { .dev_type = HV_DM, + HV_DM_GUID, + .perf_device = false, + }, + + /* Unknown GUID */ + { .dev_type = HV_UNKOWN, + .perf_device = false, + }, +}; + +static u16 hv_get_dev_type(const uuid_le *guid) +{ + u16 i; + + for (i = HV_IDE; i < HV_UNKOWN; i++) { + if (!uuid_le_cmp(*guid, vmbus_devs[i].guid)) + return i; + } + pr_info("Unknown GUID: %pUl\n", guid); + return i; +} /** * vmbus_prep_negotiate_resp() - Create default response for Hyper-V Negotiate message @@ -251,6 +365,7 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) struct vmbus_channel *channel; bool fnew = true; unsigned long flags; + u16 dev_type; /* Make sure this is a new offer */ mutex_lock(&vmbus_connection.channel_mutex); @@ -288,7 +403,9 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) goto err_free_chan; } - init_vp_index(newchannel, &newchannel->offermsg.offer.if_type); + dev_type = hv_get_dev_type(&newchannel->offermsg.offer.if_type); + + init_vp_index(newchannel, dev_type); if (newchannel->target_cpu != get_cpu()) { put_cpu(); @@ -325,6 +442,7 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) if (!newchannel->device_obj) goto err_deq_chan; + newchannel->device_obj->device_id = dev_type; /* * Add the new device to the bus. This will kick off device-driver * binding which eventually invokes the device driver's AddDevice() @@ -358,37 +476,6 @@ err_free_chan: free_channel(newchannel); } -enum { - IDE = 0, - SCSI, - FC, - NIC, - ND_NIC, - PCIE, - MAX_PERF_CHN, -}; - -/* - * This is an array of device_ids (device types) that are performance critical. - * We attempt to distribute the interrupt load for these devices across - * all available CPUs. - */ -static const struct hv_vmbus_device_id hp_devs[] = { - /* IDE */ - { HV_IDE_GUID, }, - /* Storage - SCSI */ - { HV_SCSI_GUID, }, - /* Storage - FC */ - { HV_SYNTHFC_GUID, }, - /* Network */ - { HV_NIC_GUID, }, - /* NetworkDirect Guest RDMA */ - { HV_ND_GUID, }, - /* PCI Express Pass Through */ - { HV_PCIE_GUID, }, -}; - - /* * We use this state to statically distribute the channel interrupt load. */ @@ -405,22 +492,15 @@ static int next_numa_node_id; * For pre-win8 hosts or non-performance critical channels we assign the * first CPU in the first NUMA node. */ -static void init_vp_index(struct vmbus_channel *channel, const uuid_le *type_guid) +static void init_vp_index(struct vmbus_channel *channel, u16 dev_type) { u32 cur_cpu; - int i; - bool perf_chn = false; + bool perf_chn = vmbus_devs[dev_type].perf_device; struct vmbus_channel *primary = channel->primary_channel; int next_node; struct cpumask available_mask; struct cpumask *alloced_mask; - for (i = IDE; i < MAX_PERF_CHN; i++) { - if (!uuid_le_cmp(*type_guid, hp_devs[i].guid)) { - perf_chn = true; - break; - } - } if ((vmbus_proto_version == VERSION_WS2008) || (vmbus_proto_version == VERSION_WIN7) || (!perf_chn)) { /* diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 328e4c3808e0..3668a95778ec 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -477,6 +477,24 @@ static ssize_t channel_vp_mapping_show(struct device *dev, } static DEVICE_ATTR_RO(channel_vp_mapping); +static ssize_t vendor_show(struct device *dev, + struct device_attribute *dev_attr, + char *buf) +{ + struct hv_device *hv_dev = device_to_hv_device(dev); + return sprintf(buf, "0x%x\n", hv_dev->vendor_id); +} +static DEVICE_ATTR_RO(vendor); + +static ssize_t device_show(struct device *dev, + struct device_attribute *dev_attr, + char *buf) +{ + struct hv_device *hv_dev = device_to_hv_device(dev); + return sprintf(buf, "0x%x\n", hv_dev->device_id); +} +static DEVICE_ATTR_RO(device); + /* Set up per device attributes in /sys/bus/vmbus/devices/<bus device> */ static struct attribute *vmbus_attrs[] = { &dev_attr_id.attr, @@ -502,6 +520,8 @@ static struct attribute *vmbus_attrs[] = { &dev_attr_in_read_bytes_avail.attr, &dev_attr_in_write_bytes_avail.attr, &dev_attr_channel_vp_mapping.attr, + &dev_attr_vendor.attr, + &dev_attr_device.attr, NULL, }; ATTRIBUTE_GROUPS(vmbus); @@ -957,6 +977,7 @@ struct hv_device *vmbus_device_create(const uuid_le *type, memcpy(&child_device_obj->dev_type, type, sizeof(uuid_le)); memcpy(&child_device_obj->dev_instance, instance, sizeof(uuid_le)); + child_device_obj->vendor_id = 0x1414; /* MSFT vendor ID */ return child_device_obj; diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 753dbad0bf94..3172521df805 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -633,6 +633,32 @@ enum hv_signal_policy { HV_SIGNAL_POLICY_EXPLICIT, }; +enum vmbus_device_type { + HV_IDE = 0, + HV_SCSI, + HV_FC, + HV_NIC, + HV_ND, + HV_PCIE, + HV_FB, + HV_KBD, + HV_MOUSE, + HV_KVP, + HV_TS, + HV_HB, + HV_SHUTDOWN, + HV_FCOPY, + HV_BACKUP, + HV_DM, + HV_UNKOWN, +}; + +struct vmbus_device { + u16 dev_type; + uuid_le guid; + bool perf_device; +}; + struct vmbus_channel { /* Unique channel id */ int id; @@ -959,6 +985,8 @@ struct hv_device { /* the device instance id of this device */ uuid_le dev_instance; + u16 vendor_id; + u16 device_id; struct device device; |