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acrn-config: print warning if MMIO BAR size above 4G

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Currently MMIO BAR size not support size above 4G,
print warning to user to set the MMIO size in 4G region from BIOS.

Target-On: #3854
Signed-off-by: Wei Liu <weix.w.liu@intel.com>
Acked-by: Victor Sun <victor.sun@intel.com>
This commit is contained in:
Wei Liu 2019-11-21 15:27:46 +08:00 committed by wenlingz
parent dc2d6b6656
commit d44440f734
1 changed files with 23 additions and 3 deletions
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26
misc/acrn-config/board_config/pci_devices_h.py
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@ -14,6 +14,18 @@ PCI_END_HEADER = r"""
#endif /* PCI_DEVICES_H_ */"""
def get_value_after_str(line, key):
""" Get the value after cstate string """
idx = 0
line_in_list = line.split()
for idx_key, val in enumerate(line_in_list):
if val == key:
idx = idx_key
break
return line_in_list[idx + 1]
def parser_pci():
""" Parse PCI lines """
cur_bdf = 0
@ -21,7 +33,8 @@ def parser_pci():
tmp_bar_dic = {}
pci_dev_dic = {}
pci_bar_dic = {}
bar_value = bar_num = '0'
above_4G_mmio = False
bar_addr = bar_num = '0'
pci_lines = board_cfg_lib.get_info(
board_cfg_lib.BOARD_INFO_FILE, "<PCI_DEVICE>", "</PCI_DEVICE>")
@ -29,8 +42,10 @@ def parser_pci():
# get pci bar information into pci_bar_dic
if "Region" in line and "Memory at" in line:
bar_num = line.split()[1].strip(':')
bar_value = line.split()[4]
tmp_bar_dic[int(bar_num)] = hex(int(bar_value, 16))
bar_addr = get_value_after_str(line, "at")
if int(bar_addr, 16) > 0xffffffff:
above_4G_mmio = True
tmp_bar_dic[int(bar_num)] = hex(int(bar_addr, 16))
else:
prev_bdf = cur_bdf
pci_bdf = line.split()[0]
@ -52,6 +67,11 @@ def parser_pci():
# clear the tmp_bar_dic before store the next dic
tmp_bar_dic = {}
if above_4G_mmio:
board_cfg_lib.print_yel("Currently ACRN does not support BAR size above 4G, please double check below possible items in BIOS:\n\
1. GPU Aperture size is less than 1GB;\n\
2. the device MMIO mapping region is below 4GB", warn=True)
# output all the pci device list to pci_device.h
sub_name_count = collections.Counter(pci_dev_dic.values())