After reshuffle pci_bar structrue we could write ~0U not BAR size mask to BAR
configuration space directly when do BAR sizing. In this case, we could know whether
the value in BAR configuration space is a valid base address. As a result, we could
do BAR re-programming whenever we want.
Tracked-On: #3475
Signed-off-by: Li Fei1 <fei1.li@intel.com>
The current code declare pci_bar structure following the PCI bar spec. However,
we could not tell whether the value in virtual BAR configuration space is valid
base address base on current pci_bar structure. We need to add more fields which
are duplicated instances of the vBAR information. Basides these fields which will
added, bar_base_mapped is another duplicated instance of the vBAR information.
This patch try to reshuffle the pci_bar structure to declare pci_bar structure
following the software implement benefit not the PCI bar spec.
Tracked-On: #3475
Signed-off-by: Li Fei1 <fei1.li@intel.com>
Concurrent access on PCI device may happened if UOS try to access PCI configuration
space on different vCPUs through IO port. This patch just adds a global PCI lock for
each VM to prevent the concurrent access.
Tracked-On: #3475
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
- update the function argument type to union
Declaring argument as pointer is not necessary since it
only does the comparison.
Tracked-On: #1842
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
When assgined a PCI PTDev to post-launched VM from SOS, using a pointer to point to
the real struct pci_vdev. When post-launched VM access its PTDev configure space in
SOS address space, using this real struct pci_vdev.
Tracked-On: #3475
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Rename vbdf to bdf for the following reasons:
Use the same coding style as struct pci_pdev, as pci_pdev uses bdf instead of pbdf
pci_vdev implies the its bdf is virtual, no need to prefix bdf with the v
prefix (redundant)
Tracked-On: #3241
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Add @pre for some functions, and fix outdated @pre statements
Tracked-On: #3056
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Remove vdev ops for partition mode, change related code to directly call the corresponding
functions instead
Remove struct pci_vdev_ops from vpci.h
Add @pre for pci_find_vdev_by_pbdf and pci_find_vdev_by_vbdf/partition_mode_vpci_init
Change the return value from int32_t to void to comply with misra c and
add ASSERT/panic in the functions (if necessary):
vdev_hostbridge_init
vdev_hostbridge_deinit
vdev_pt_init
vdev_pt_deinit
Still use pr_err in partition_mode_cfgread and partition_mode_cfgwrite to check if vdev cfgread/cfgwrite
access is aligned on 1/2/4 bytes, which is the only case that vdev cfgread/cfgwrite will return
nonzero, pr_err will be removed in subsequent patch titled "unify the sharing
mode and partition mode coding style for similar functions"
Remove @pre for local variables
Add ASSERT in partition_mode_pdev_init to check if pdev is NULL (user config
error)
Tracked-On: #2534
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Add vdev functions so they can be reused by both partition mode
and sharing mode code:
pci_find_vdev_by_vbdf: search for vdev by virtual bdf
pci_find_vdev_by_pbdf: search for vdev by physical bdf
Tracked-On: #2534
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
core.c contains functions all related to pci vdev management, so it makes sense
to give it a more meaningful file name.
Tracked-On: #2534
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
