acrn-config: detect and parse MSI-X table number

Detect and get MSI-X table number in board xmls.
Parse and generate the number for board config while 'MAX_MSIX_TABLE_NUM'
item is blank.

Tracked-On: #4994
Signed-off-by: Wei Liu <weix.w.liu@intel.com>
Acked-by: Victor Sun <victor.sun@intel.com>

misc/acrn-config/hv_config/board_defconfig.py

@@ -194,7 +194,13 @@ def get_capacities(hv_info, config):
     print("CONFIG_MAX_PCI_DEV_NUM={}".format(hv_info.cap.max_pci_dev_num), file=config)
     print("CONFIG_MAX_IOAPIC_LINES={}".format(hv_info.cap.max_ioapic_lines), file=config)
     print("CONFIG_MAX_PT_IRQ_ENTRIES={}".format(hv_info.cap.max_pt_irq_entries), file=config)
-    print("CONFIG_MAX_MSIX_TABLE_NUM={}".format(hv_info.cap.max_msix_table_num), file=config)
+    max_msix_table_num = 0
+    if not hv_info.cap.max_msix_table_num:
+        native_max_msix_line = board_cfg_lib.get_info(common.BOARD_INFO_FILE, "<MAX_MSIX_TABLE_NUM>", "</MAX_MSIX_TABLE_NUM>")
+        max_msix_table_num = native_max_msix_line[0].strip()
+    else:
+        max_msix_table_num = hv_info.cap.max_msix_table_num
+    print("CONFIG_MAX_MSIX_TABLE_NUM={}".format(max_msix_table_num), file=config)
     print("CONFIG_MAX_EMULATED_MMIO_REGIONS={}".format(hv_info.cap.max_emu_mmio_regions), file=config)
 
 

misc/acrn-config/hv_config/hv_item.py

@@ -78,7 +78,7 @@ class CapHv:
         hv_cfg_lib.ir_entries_check(self.max_ir_entries, "CAPACITIES", "MAX_IR_ENTRIES")
         hv_cfg_lib.hv_size_check(self.iommu_bus_num, "CAPACITIES", "IOMMU_BUS_NUM")
         hv_cfg_lib.hv_range_check(self.max_pci_dev_num, "CAPACITIES", "MAX_PCI_DEV_NUM", hv_cfg_lib.RANGE_DB['PCI_DEV_NUM'])
-        hv_cfg_lib.hv_range_check(self.max_msix_table_num, "CAPACITIES", "MAX_MSIX_TABLE_NUM", hv_cfg_lib.RANGE_DB['MSIX_TABLE_NUM'])
+        hv_cfg_lib.max_msix_table_num_check(self.max_msix_table_num, "CAPACITIES", "MAX_MSIX_TABLE_NUM")
 
 
 class MisCfg:

misc/acrn-config/library/hv_cfg_lib.py

@@ -71,10 +71,11 @@ def release_check(sel_str, dbg_opt, rel_str):
         ERR_LIST[key] = "{} should be in {}".format(rel_str, N_Y)
 
 
-def hv_range_check(str_val, branch_tag, item, range_db):
+def hv_range_check(str_val, branch_tag, item, range_db, empty_check_enable=True):
 
-    if empty_check(str_val, branch_tag, item):
-        return
+    if empty_check_enable:
+        if empty_check(str_val, branch_tag, item):
+            return
     if not is_numeric_check(str_val, branch_tag, item):
         return
     range_check(str_val, branch_tag, item, range_db)
@@ -225,3 +226,16 @@ def mba_delay_check(mba_delay_list, feature, mba_str, max_mask_str):
             key = 'hv,{},{},{}'.format(feature, mba_str, max_mask_str)
             ERR_LIST[key] = "{} should be in range[0,{}]".format(max_mask_str, mba_delay_str)
             return
+
+
+def max_msix_table_num_check(max_msix_table_num, cap_str, max_msi_num_str):
+    native_max_msix_line = board_cfg_lib.get_info(common.BOARD_INFO_FILE, "<MAX_MSIX_TABLE_NUM>", "</MAX_MSIX_TABLE_NUM>")
+    if not native_max_msix_line and not max_msix_table_num:
+        empty_check(max_msix_table_num, cap_str, max_msi_num_str)
+        return
+
+    if max_msix_table_num:
+        hv_range_check(max_msix_table_num, cap_str, max_msi_num_str, RANGE_DB['MSIX_TABLE_NUM'], False)
+    if native_max_msix_line:
+        native_max_msix_num = native_max_msix_line[0].strip()
+        range_check(native_max_msix_num, "In board xml", max_msi_num_str, RANGE_DB['MSIX_TABLE_NUM'])

misc/acrn-config/target/misc.py

@@ -217,6 +217,27 @@ def dump_cpu_core_info(config):
     print("\t</CPU_PROCESSOR_INFO>", file=config)
     print("", file=config)
 
+def dump_max_msix_table_num(config):
+
+    msix_table_num_list = []
+    max_msix_table_num = 1
+    cmd = 'lspci -vv | grep "MSI-X" | grep "Count="'
+    res_lines = parser_lib.get_output_lines(cmd)
+    for line in res_lines:
+        tmp_num = line.split('=')[1].split()[0]
+        msix_table_num_list.append(tmp_num)
+
+    if msix_table_num_list:
+        max_msix_table_num = max(msix_table_num_list)
+    print("\t<MAX_MSIX_TABLE_NUM>", file=config)
+    print("\t{}".format(max_msix_table_num), file=config)
+    print("\t</MAX_MSIX_TABLE_NUM>", file=config)
+
+
+def dump_dev_config_info(config):
+
+    dump_max_msix_table_num(config)
+    print("", file=config)
 
 def generate_info(board_info):
     """Get System Ram information
@@ -235,3 +256,5 @@ def generate_info(board_info):
         dump_total_mem(config)
 
         dump_cpu_core_info(config)
+
+        dump_dev_config_info(config)

misc/acrn-config/target/parser_lib.py

@@ -154,3 +154,15 @@ def dump_execute(cmd, desc, config):
         print("\t{}".format(line.strip()), file=config)
 
     print("\t</{0}>".format(desc), file=config)
+
+
+def get_output_lines(cmd):
+    res_lines = []
+    res = cmd_execute(cmd)
+    while True:
+        line = res.stdout.readline().decode('ascii')
+        if not line:
+            break
+        res_lines.append(line.strip())
+
+    return res_lines