Commit Graph

268 Commits

Author SHA1 Message Date
Conghui Chen
16ad062d1a dm: remove guest cpu number option
Remove the guest cpu number option '-c', as the guest cpu number is
defined in hypervisor vm configuration file, and the number can be
return by vm_create().

Tracked-On: #3663
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-09-24 11:58:45 +08:00
Shuo A Liu
d8acff1f44 dm: get vcpu num from hypervisor when create VM
Now, we pre-define VM configuration statically in HV. So HV can create
vcpus instead of DM when VM create.

This patch get the created vcpu_num from HV. vm_create_vcpu can be
removed later if kernel can get vcpu_num correctly without
IC_CREATE_VCPU ioctl.

v4: Keep vm_create_vcpu in DM for compatbility. We might remove it when
kernel is ready.

Tracked-On: #3663
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
2019-09-24 11:58:45 +08:00
Minggui Cao
eb5a57b780 DM: add guest vm power manager by vuart
vuart can be used as communication channel between VMs;
here vuart used to control vm's power off flow; control command
is from SOS to UOS

Tracked-On: #3564
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>
2019-09-11 16:43:22 +08:00
Minggui Cao
00401a1e78 DM: separate pty vuart operation from IOC
for pty vuart operation will be commonly used by other module,
like pm-vuart: control UOS power off through vuart.

Tracked-On: #3564
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>
2019-09-11 16:43:22 +08:00
Yin Fengwei
b36d80ea0c dm: pm: add dm option to select guest notify method
Now, we have two ways to notify guest about power managment
event:
  - ioc on MRB platforms
  - ACPI power button on other platforms
And we hardcode which one is used now.

In coming change, we will add UART based guest notify method.
We add dm command option to select which method will be used
when launch UOS.

Tracked-On: #3564
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Reviewed-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Wang Yu <yu1.wang@intel.com>
2019-09-11 13:27:10 +08:00
Yin Fengwei
1041384993 dm: pm: move host power button related code out of pm.c
For the code which forwards the native power button event to
guest, they are not related with guest pm related operation
emulation. Move this part of code out of pm.c. And will make
the power button as one possible method to notify guest about
the shutdown operation.

Tracked-On: #3564
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Reviewed-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Wang Yu <yu1.wang@intel.com>
2019-09-11 13:27:10 +08:00
Liu Xinyun
639c698626 dm: reserve 16M hole for gvt in e820 table
Add 16M@0xDF000000 for GVT usage as below. Currently, use 8M for GOP
framebuf, it satisfies display resolution of 1920x1080@32bpp

start         end          size    Note
[0x 00000000, 0x 000A0000] 640K
[0x 000A0000, 0x 00100000] 384K
[0x 00100000, 0x 7ff00000] 2G-1M   lowmem-1M
[0x 80000000, 0x 88000000] 128M    [lowmem, +128M]
[0x DF000000, 0x E0000000] 16M     *gvt*
[0x e0000000, 0x100000000] 512M
[0x100000000, 0x140000000] 1G

*gvt*:
[0xDF000000, 0xDF800000] 8M      GOP FB
[0xDFFFD000, 0XE0000000] 12K     opregion

Tracked-On: #3624

Signed-off-by: Liu Xinyun <xinyun.liu@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-09-10 09:50:39 +08:00
huihuang.shi
f147c388a5 hv: fix Violations touched ACRN Coding Guidelines
fix violations touched below:
1.Cast operation on a constant value
2.signed/unsigned implicity conversion
3.return value unused.

V1->V2:
1.bitmap api will return boolean type, not need to check "!= 0", deleted.
2.The behaves ~(uint32_t)X and (uint32_t)~X are not defined in ACRN hypervisor Coding Guidelines,
removed the change of it.
Tracked-On: #861
Signed-off-by: Huihuang Shi <huihuang.shi@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
2019-08-15 09:47:11 +08:00
Yang, Yu-chu
16a7d2522c DM: ovmf NV storage writeback support
To support modification of OVMF NV storage, add an option "w" for
--ovmf to write the changed OVMF NV data section back to the OVMF image
from guest memory before deinit operations. This will enable persistent
EFI variables. Only option "w" is supported, dm will exit if passing
invalid option. It expects OVMF NV storage writeback with option "w"
when power off or reboot the UOS, poweroff, cold and warm reboot in EFI
shell and when dm recieves SIGINT and SIGHUP.

Tracked-On: #3413
Signed-off-by: Yang, Yu-chu <yu-chu.yang@intel.com>
Reviewed-by:Eddie Dong <eddie.dong@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>
2019-07-22 11:18:47 +08:00
Conghui Chen
a450add672 DM: virtio-i2c: add support for virtio i2c adapter
Add virtio i2c adapter BE driver.

Tracked-On: #3357
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Reviewed-by: Yuan Liu <yuan1.liu@intel.com>
Reviewed-by: Shuo A Liu <shuo.a.liu@intel.com>
Acked-by: Wang Yu <yu1.wang@intel.com>
2019-07-05 10:20:21 +08:00
Shuo A Liu
2b3dedfb9b dm: pci: clean up assert() in pci core
Tracked-On: #3252
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Reviewed-by: Yonghua Huang <yonghua.huang@intel.com>
2019-06-20 11:21:51 +08:00
Minggui Cao
ed7f64d748 DM: add deinit API for loggers
when DM exit, it is better to call deinit_loggers
to do some cleanup work.

Tracked-On: #3012
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Reviewed-by: Yin Fengwei <fengwei.yin@intel.com>
2019-06-13 13:06:51 +08:00
Xiaoguang Wu
5a9627ced8 DM USB: xHCI: refine the emulation of Stop Endpoint Command
Old implementation does nothing when Stop Endpoint cmd is received,
it is not right. The new implementation will cancel all the libusb
requests in processing.

Tracked-On: #3054
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
2019-06-13 10:30:38 +08:00
Xiaoguang Wu
b57f6f9243 DM USB: clean-up: give shorter names to libusb_xfer and req
The names for the two variables are too long, change to shorter
name. This patch doesn't change any logic, just clean up.

Tracked-On: #3054
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
2019-06-13 10:30:38 +08:00
Xiaoguang Wu
adaed5c0e3 DM USB: xHCI: add 'chained' field in struct usb_data_xfer_block
The chained field could help to describe the relationship of USB
data blocks.

Tracked-On: #3054
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
2019-06-13 10:30:38 +08:00
Xiaoguang Wu
f2e35ab701 DM USB: save MaxPacketSize value in endpoint descriptor
Save the MaxPacketSize value for every endpoint of virtual
USB device.

Tracked-On: #3054
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
2019-06-13 10:30:38 +08:00
bing.li
509af78490 dm: Solve the problem of repeat mount hugetblfs
If you run two acrn-dm processes at the same time,
hugetblfs will be mounted twice, which will cause a memory leak.
The specific solution is :different virtual machines mount hugetblfs
into different directories.

Tracked-On:#2854
Signed-off-by: bing.li <bingx.li@intel.com>
Reviewed-by: Minggui Cao<minggui.cao@intel.com>
Acked-by: Yin Fengwei<fengwei.yin@intel.com>
2019-06-11 15:03:47 +08:00
Jian Jun Chen
b98096ea06 dm: pci: fix the MMIO regions overlap when getting bar size
PCI spec says that the procedure of sizing a BAR is as follows:
1) disable the decode via command register
2) save the original value of BAR register
3) write all-1 to the BAR register
4) read BAR register back, calculate the size
5) restore the original value to BAR register
6) re-enable the decode via command register

Some driver does not disable the decode of BAR register via the
command register before sizing a BAR. This will lead to a overlay
of the BAR addresses when trying to register the intermediate
BAR address via register_bar. A stateful variable sizing is used
to keep track of such kind of BAR address changes and workaroud
this violation.

Currently this issue is only found when audio device is passed
through to Windows 10 guest. When it is fixed in the Windows
audio driver, this patch should be reverted.

v1 -> v2:
- change the commit message to add the procedure of BAR sizing from
  PCI spec

Tracked-On: #2962
Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
2019-06-03 09:14:15 +08:00
Jian Jun Chen
811d1fe93d dm: pci: update MMIO EPT mapping when update BAR address
For PCI passthrough device when guest OS updates the BAR address
the corresponding EPT mapping should be updated as well.

Tracked-On: #2962
Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Signed-off-by: Liu Shuo A <shuo.a.liu@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>
2019-05-30 14:19:14 +08:00
yuhong.tao@intel.com
50f50872e0 DM: Cleanup vmcfg
Removed the entire vmcfg feature, these changes are made:
1.Deleted devicemodel/vmcfg/
2.Deleted devicemodel/include/vmcfg.h
3.Cleanup vmcfg in devicemodel/Makefile

Tracked-On: #3192
Acked-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Tao Yuhong <yuhong.tao@intel.com>
2019-05-29 14:07:45 +08:00
Binbin Wu
a3073175a6 dm: e820: reserve memory range for EPC resource
Reserved 128MB memory range for EPC resource in E820 table, starting
from 0x80000000.
Need to align the base address b/t DM and HV.
For hypervisor, the base address will be specified in epc field in
vm_configurations.c

Tracked-On: #3179
Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-05-29 11:24:13 +08:00
Vijay Dhanraj
517707dee4 DM/HV: Increase VM name len
VM Name length is restricted to 32 characters. kata creates
a VM name with GUID added as a part of VM name making it around
80 characters. So increasing this size to 128.

v1->v2:
It turns out that MAX_VM_OS_NAME_LEN usage in DM and HV are for
different use cases. So removing the macro from acrn_common.h.
Definied macro MAX_VMNAME_LEN for DM purposes in dm.h. Retaining
original macron name MAX_VM_OS_NAME_LEN for HV purposes but defined
in vm_config.h.

Tracked-On: #3138
Signed-off-by: Vijay Dhanraj <vijay.dhanraj@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-27 12:13:51 +08:00
Vijay Dhanraj
f010f99d67 DM: Decouple and increase kernel boot args length
Currently, we use STR_LEN for all checking the size of all the
acrn-dm parameters. But some parameters like kernel boot args
can grow based on different needs. For example, when kata launches
guest VM using acrn, the kernel boot args increases by 256 bytes
(i.e 1024 +256).

Just increasing STR_LEN will unnecessarily increase allocations
for other acrn-dm parameters. So decoupling only boot_args
length and increasing it to 2048.

PS: If other parameters like ramdisk path, kernel path,
elf_path etc. don't need 1024 bytes, we can reduce STR_LEN
to 256 or 512 bytes.

Tracked-On: #3138
Signed-off-by: Vijay Dhanraj <vijay.dhanraj@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-27 12:13:51 +08:00
Xiaoguang Wu
ae066689bb DM USB: xHCI: re-implement the emulation of extented capabilities
There are many quirks in Intel xHCI implementation and it is very hard
to debug under Microsoft Windows OS, hence use ACRN xHCI extented
capabilities as the default setting.

Tracked-On: #3163
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
2019-05-24 13:21:12 +08:00
yliu79
8bca0b1ae9 DM: remove unused function mptable_add_oemtbl
Change-Id: Icf92fd5bbbfe935960dc47307822827092a46369
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
bd3f34e952 DM: remove unused function vm_get_device_fd
Change-Id: I9056838bbf150983c8011706d3d0a07aed043917
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
9224277b5e DM: remove unused function vm_setup_ptdev_msi
Change-Id: Ia62d4a75ef6074cfd4f5b271ab21ff9ed0a64f51
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
bb8584dd4a DM: remove unused function vm_apicid2vcpu
Change-Id: I3bb503058df8e0048370f6c1ab77f63aadf1eb57
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
ec924385ae DM: remove unused function vm_create_devmem
Change-Id: I1d6b56688e533a00a484548ed97fd1968f01041d
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
75ef7e8458 DM: remove unused function vm_set_lowmem_limit
Change-Id: I0f9ad089b8e72c7ecd9c83a9115727140c945c4f
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
683e2416b1 DM: remove unused function console_ptr_event
Change-Id: If8dc5ba21d172a6794d86b048d61d9ccfc28cab4
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
12f55d1389 DM: remove unused function console_key_event
Change-Id: I6ab81750757fd12929fd60c9d7fa92fd96c9520b
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
aacc6e5926 DM: remove unused function console_refresh
Change-Id: I7ad16ecf3325e012fd738f2774aec6d957efd678
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
2711e553ce DM: remove unused function console_fb_register
Change-Id: I334b83c0b0a69f705c11ff7017a96dc6875e5c9a
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
d19d0e26c6 DM: remove unused function gc_init
Change-Id: I91f498b9ae98002bc86b78fce2a0836c508b3945
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
43c01f8e26 DM: remove unused function console_init
Change-Id: I5c06a1dd057cea0edd364c846958074ee3df4987
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
e6360b9b7f DM: remove unused function gc_resize
Change-Id: I82504374fed44f08d92910d0d34a02337d844fd0
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
d153bb8664 DM: remove unused function gc_set_fbaddr
Change-Id: I005edc5f69fcd3b4969c7c7d75f633d2219acbe5
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
475c51e53a DM: remove unused function console_set_fbaddr
Change-Id: Ia0d96880a53a7564492ec4d7943b3040e32dd6e0
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
2a33d52ec6 DM: remove unused function vrtc_reset
Change-Id: If0dbd40cf54eb81ca4ced9acae273d291e99b25c
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
1a726ce010 DM: remove unused function vrtc_get_time
Change-Id: I2074295234f8cfaf5f325bfbacab9c86779653bf
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
8cb64cc71f DM: remove unused function vrtc_nvram_read
Change-Id: I0b8c42879256e53762aeb031f63fc043ae2d9128
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
dcd6d8b5a9 DM: remove unused function virtio_pci_modern_cfgread and virtio_pci_modern_cfgwrite
Change-Id: I3f362858956a642ae0de9ab36387e274fc939659
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
62f14bb11f DM: remove unused function virtio_dev_error
Change-Id: I6e94ab0286e73435429e2ccf971207c7d8ed6ef6
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
yliu79
2d6e6ca375 DM: remove unused function usb_native_is_ss_port
Change-Id: I7991560b40b936776e45f7b81fee085935eb6eae
Tracked-On: #3123
Signed-off-by: Ying Liu <ying2.liu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-05-24 11:51:00 +08:00
Vijay Dhanraj
71b56e0eed DM: Virtio-Blk Rescan
This patch adds support to trigger rescan of virtio-blk device by the
guest VM. This is an alternate to hot-plugging virtio-blk device.
This feature stems from the kata requirement, which hot-plugs container
rootfs after the VM is launched.

As part of virtio-blk rescan,
1. Update the backing file for the virtio-blk device with valid file.
   Basically update the empty file (with dummy bctxt) that was passed
   during VM launch.
2. Update virtio-blk device configurations for udpated backing file.
3. Update size associated with valid backing file in the config space.
4. Notify guest OS, of the new config change.
5. On this notification, guest will do the following.
	(i). Update virtio-blk capacity.
 	(ii). Revalidate the disk.
 	(iii). Identify the newly plugged block device.

v5 -> v6:
- Removed use of dummy file and added a new parameter "nodisk"
  to virtio-blk which indicates user wants to create a virtio-blk
  device with dummy backend.
- Moved vm_monitor_rescan from pci core to virtio-blk as it currently
  applies to only virtio-blk.

v4 -> v5:
- Reverted back logic, so that blkrescan is only supported when
  VM is launched with empty backend file.

v3 -> v4:
- Close block context before allocating a new one
- Allow backend filepath  with additional options to be more generic
- Remove blank lines introduced as part of previous patches.

v2 -> v3:
- Renamed vdev ops vdev_blk rescan to vdev_rescan
- Renamed montior ops virtio_blkrescan_ops to virtio_rescan_ops
- Consolidated virtio-blk configuration specific part into
  a separate function
- Removed size requirement in acrnctl command.

v1 -> v2:
- Added more comments in the code.
- Renamed APIs from displug to blkrescan, inline with acrnctl cmd.
- Split the patch into two. This corresponds to changes in acrn-dm.

Tracked-On: #3051
Signed-off-by: Vijay Dhanraj <vijay.dhanraj@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
2019-05-07 09:08:50 +08:00
Minggui Cao
1cd914f992 DM: add logger setting parser function
the logger setting can be input as acrn-dm params;
so need parse it to init logger system.

Tracked-On: #3012
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>
2019-05-05 19:13:07 +08:00
Minggui Cao
c3954cecbe DM: add log macro/func and basic data structure.
also set default logger as console and enabled.

Tracked-On: #3012
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>
2019-05-05 19:13:07 +08:00
Sainath Grandhi
7a78e70eb3 acrn-dm: Pass vbdf and pbdf info to vm_reset_ptdev_intx_info
ACRN interepts vm_set/reset_ptdev_intx_info hypercalls to set
the SOS vdev properties to indicate it is assigned to UOS. Today,
upon vm_reset_ptdev_intx_info hypercall ACRN does not revert the SOS
vdev properties back to that of SOS, as vbdf and pbdf were not
part of the API. This would leave ACRN data structures in an incorrect
state

Tracked-On: #2700
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-04-29 17:04:02 +08:00
Peter Fang
4c38ff00c6 dm: completely remove enable_bar()/disable_bar() functions
Following up on d648df766c, surgically
remove all the functions related to enable_bar()/disable_bar() that got
introduced in 8787b65fde.

Tracked-On: #2902
Signed-off-by: Peter Fang <peter.fang@intel.com>
Reviewed-by: Shuo A Liu <shuo.a.liu@intel.com>
2019-04-22 15:18:21 +08:00