Coverage for tsfpga/vivado/ip_cores.py: 98%

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1# -------------------------------------------------------------------------------------------------- 

2# Copyright (c) Lukas Vik. All rights reserved. 

3# 

4# This file is part of the tsfpga project. 

5# https://tsfpga.com 

6# https://gitlab.com/tsfpga/tsfpga 

7# -------------------------------------------------------------------------------------------------- 

8 

9import hashlib 

10import json 

11 

12from tsfpga.system_utils import create_file, delete, read_file 

13from .project import VivadoIpCoreProject 

14 

15 

16class VivadoIpCores: 

17 

18 """ 

19 Handle a list of IP core sources. Has a mechanism to detect whether a regenerate of IP files 

20 is needed. 

21 """ 

22 

23 project_name = "vivado_ip_project" 

24 

25 def __init__(self, modules, output_path, part_name, vivado_project_class=None): 

26 """ 

27 Arguments: 

28 modules (list(BaseModule)): IP cores from these modules will be included. 

29 output_path (pathlib.Path): The Vivado project will be placed here. 

30 part_name (str): Vivado part name to be used for the project. 

31 vivado_project_class: The Vivado project class that will be used for the IP core 

32 project. Is safe to leave at default in most cases. 

33 """ 

34 self.project_directory = output_path.resolve() / self.project_name 

35 self._part_name = part_name 

36 

37 vivado_project_class = ( 

38 VivadoIpCoreProject if vivado_project_class is None else vivado_project_class 

39 ) 

40 

41 self._hash_file = self.project_directory / "ip_files_hash.txt" 

42 

43 self._setup(modules, vivado_project_class) 

44 

45 @property 

46 def compile_order_file(self): 

47 """ 

48 pathlib.Path: Path to the generated compile order file. 

49 """ 

50 return self.project_directory / "compile_order.txt" 

51 

52 @property 

53 def vivado_project_file(self): 

54 """ 

55 pathlib.Path: Path to the Vivado project file. 

56 """ 

57 return self._vivado_project.project_file(self.project_directory) 

58 

59 def create_vivado_project(self): 

60 """ 

61 Create IP core Vivado project. 

62 """ 

63 print(f"Creating IP core project in {self.project_directory}") 

64 delete(self.project_directory) 

65 self._vivado_project.create(self.project_directory) 

66 self._save_hash() 

67 

68 def create_vivado_project_if_needed(self): 

69 """ 

70 Create IP core Vivado project if anything has changed since last time this was run. 

71 If 

72 

73 * List of TCL files that create IP cores, 

74 * and contents of these files, 

75 

76 is the same then it will not create. But if anything is added or removed from the list, 

77 or the contents of a TCL file is changed, there will be a recreation. 

78 

79 Return: 

80 True if Vivado project was created. False otherwise. 

81 """ 

82 if self._should_create(): 

83 self.create_vivado_project() 

84 return True 

85 

86 return False 

87 

88 def _setup(self, modules, vivado_project_class): 

89 self._vivado_project = vivado_project_class( 

90 name=self.project_name, modules=modules, part=self._part_name 

91 ) 

92 

93 ip_core_files = [] 

94 for module in modules: 

95 # Send the same two arguments that are sent in the VivadoProject create flow 

96 ip_core_files += module.get_ip_core_files(generics={}, part=self._part_name) 

97 

98 self._hash = self._calculate_hash(ip_core_files) 

99 

100 @staticmethod 

101 def _calculate_hash(ip_core_files): 

102 """ 

103 A string with hashes of the different IP core files. 

104 """ 

105 data = "" 

106 

107 def sort_by_file_name(ip_core_file): 

108 return ip_core_file.path.name 

109 

110 for ip_core_file in sorted(ip_core_files, key=sort_by_file_name): 

111 data += f"{ip_core_file.path}\n" 

112 

113 if ip_core_file.variables: 

114 data += json.dumps(ip_core_file.variables, sort_keys=True) 

115 data += "\n" 

116 

117 with open(ip_core_file.path, "rb") as file_handle: 

118 ip_hash = hashlib.md5() 

119 ip_hash.update(file_handle.read()) 

120 data += f"{ip_hash.hexdigest()}\n" 

121 

122 return data 

123 

124 def _save_hash(self): 

125 create_file(self._hash_file, self._hash) 

126 

127 def _should_create(self): 

128 """ 

129 Return True if a Vivado project create is needed, i.e. if anything has changed. 

130 """ 

131 if not (self._hash_file.exists() and self.compile_order_file.exists()): 

132 return True 

133 

134 return read_file(self._hash_file) != self._hash