FPGA/corundum
1
0
Fork 0
mirror of https://github.com/corundum/corundum.git synced 2025-01-16 08:12:53 +08:00
Code Issues Projects Releases Wiki Activity

Don't configure MSI if already configured

Browse Source
This commit is contained in:
Alex Forencich 2020-03-02 21:16:09 -08:00
parent 37934485af
commit 060320010d
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
tb/pcie.py
View File

@ -4126,12 +4126,18 @@ class RootComplex(Switch):
if self.msi_addr is None:
self.msi_addr, _ = self.alloc_region(4, self.msi_region_read, self.msi_region_write)
if not self.tree:
# device tree missing
return False
ti = self.tree.find_dev(dev)
if not ti:
# device not found
return False
if ti.get_capability_offset(MSI_CAP_ID) is None:
# does not support MSI
return False
if ti.msi_addr is not None and ti.msi_data is not None:
# already configured
return True
msg_ctrl = yield from self.capability_read_dword(dev, MSI_CAP_ID, 0)