{"id":55449,"date":"2025-08-13T22:44:35","date_gmt":"2025-08-13T14:44:35","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/55449.html"},"modified":"2025-08-13T22:44:35","modified_gmt":"2025-08-13T14:44:35","slug":"axi5axi%e5%8d%8f%e8%ae%ae%e4%b8%ad%e7%9a%84scalar-atomic%e5%92%8cvector-atomic%e6%9c%89%e4%bb%80%e4%b9%88%e5%8c%ba%e5%88%ab%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/55449.html","title":{"rendered":"[AXI5]AXI\u534f\u8bae\u4e2d\u7684Scalar atomic\u548cVector atomic\u6709\u4ec0\u4e48\u533a\u522b\uff1f"},"content":{"rendered":"<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0\u6458\u8981&#xff1a;AXI5\u5f15\u5165\u4e86\u539f\u5b50\u64cd\u4f5c&#xff08;Atomic Transactions&#xff09;\u4ee5\u652f\u6301\u9ad8\u6548\u7684\u5e76\u53d1\u7f16\u7a0b&#xff0c;\u5c24\u5176\u5728\u591a\u6838SoC&#xff08;System-on-Chip&#xff09;\u548c\u9ad8\u6027\u80fd\u8ba1\u7b97\u73af\u5883\u4e2d\u3002\u56de\u7b54\u5206\u4e3a\u51e0\u4e2a\u90e8\u5206&#xff1a;\u6982\u5ff5\u533a\u522b\u3001Vector Atomic\u5730\u5740\u81a8\u80c0\u7684\u8be6\u7ec6\u4ecb\u7ecd&#xff08;\u5305\u62ec\u80cc\u666f\u548c\u573a\u666f&#xff09;&#xff0c;\u4ee5\u53caRTL\u4ee3\u7801\u793a\u4f8b&#xff08;\u4f7f\u7528Verilog&#xff09;\u3002<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0\u8bf7\u6ce8\u610f&#xff1a;AXI\u539f\u5b50\u64cd\u4f5c\u662fAXI5\u7684\u65b0\u7279\u6027&#xff0c;\u65e8\u5728\u63d0\u4f9b\u786c\u4ef6\u7ea7\u539f\u5b50\u6027&#xff08;\u5982\u65e0\u9501\u540c\u6b65&#xff09;&#xff0c;\u7c7b\u4f3c\u4e8eARMv8\u7684\u539f\u5b50\u6307\u4ee4&#xff08;e.g., LDADD\u3001CASA&#xff09;\u3002\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f\u65e9\u671fAXI\u7248\u672c&#xff08;\u5982AXI4&#xff09;&#xff0c;\u8fd9\u4e9b\u7279\u6027\u53ef\u80fd\u9700\u8981\u81ea\u5b9a\u4e49\u6269\u5c55\u3002RTL\u4ee3\u7801\u662f\u7b80\u5316\u793a\u4f8b&#xff0c;\u5b9e\u9645\u5b9e\u73b0\u9700\u8003\u8651\u5b8c\u6574AXI\u63a5\u53e3\u3001\u65f6\u5e8f\u548c\u9a8c\u8bc1\u3002<\/p>\n<h3>1. AXI\u534f\u8bae\u4e2d\u7684Scalar Atomic\u548cVector Atomic\u7684\u533a\u522b<\/h3>\n<h4>1.1 \u80cc\u666f<\/h4>\n<p>\u00a0 \u00a0 \u00a0 \u00a0AXI\u534f\u8bae\u652f\u6301\u539f\u5b50\u64cd\u4f5c\u6765\u786e\u4fdd\u5728\u591a\u6838\u6216\u591a\u4e3b\u8bbe\u5907\u73af\u5883\u4e2d&#xff0c;\u5bf9\u5171\u4eab\u5185\u5b58\u7684\u8bbf\u95ee\u662f\u539f\u5b50\u7684&#xff08;atomic&#xff09;&#xff0c;\u5373\u64cd\u4f5c\u4e0d\u53ef\u4e2d\u65ad&#xff0c;\u907f\u514d\u6570\u636e\u7ade\u4e89&#xff08;race conditions&#xff09;\u3002\u539f\u5b50\u64cd\u4f5c\u901a\u8fc7AXI\u7684\u5199\u901a\u9053&#xff08;AW\/W\/B&#xff09;\u5b9e\u73b0&#xff0c;\u4e3b\u8bbe\u5907&#xff08;master&#xff09;\u53d1\u51fa\u539f\u5b50\u8bf7\u6c42&#xff0c;\u4ece\u8bbe\u5907&#xff08;slave&#xff09;\u6267\u884c\u5e76\u8fd4\u56de\u7ed3\u679c\u3002<\/p>\n<ul>\n<li>Scalar Atomic&#xff1a;\u9488\u5bf9\u5355\u4e00\u6570\u636e\u5143\u7d20\u7684\u539f\u5b50\u64cd\u4f5c&#xff08;scalar\u8868\u793a\u201c\u6807\u91cf\u201d&#xff0c;\u5373\u5355\u4e2a\u503c&#xff09;\u3002<\/li>\n<li>Vector Atomic&#xff1a;\u9488\u5bf9\u591a\u4e2a\u6570\u636e\u5143\u7d20\u7684\u539f\u5b50\u64cd\u4f5c&#xff08;vector\u8868\u793a\u201c\u5411\u91cf\u201d&#xff0c;\u5373\u6570\u7ec4\u6216SIMD\u6570\u636e&#xff09;\u3002<\/li>\n<\/ul>\n<p>\u00a0 \u00a0 \u00a0 \u00a0\u8fd9\u4e9b\u64cd\u4f5c\u5728AXI5\u4e2d\u901a\u8fc7AW\u901a\u9053\u7684AxATOP&#xff08;Atomic Operation&#xff09;\u5b57\u6bb5\u6307\u5b9a\u7c7b\u578b&#xff08;e.g., AtomicStore, AtomicLoad, AtomicSwap, AtomicCompare&#xff09;\u3002\u539f\u5b50\u64cd\u4f5c\u53ef\u5305\u62ec\u52a0\u6cd5\u3001\u4ea4\u6362\u3001\u6bd4\u8f83\u7b49\u3002<\/p>\n<h5>1.2 \u5173\u952e\u533a\u522b<\/h5>\n<table>\n<tr>\u65b9\u9762Scalar AtomicVector Atomic<\/tr>\n<tbody>\n<tr>\n<td>\u5b9a\u4e49<\/td>\n<td>\u64cd\u4f5c\u9488\u5bf9\u5355\u4e00\u5730\u5740\u548c\u5355\u4e00\u6570\u636e\u5143\u7d20&#xff08;e.g., 32-bit\u621664-bit\u503c&#xff09;\u3002<\/td>\n<td>\u64cd\u4f5c\u9488\u5bf9\u8fde\u7eed\u5730\u5740\u8303\u56f4\u5185\u7684\u591a\u4e2a\u6570\u636e\u5143\u7d20&#xff08;\u5411\u91cf&#xff09;&#xff0c;\u652f\u6301SIMD-like\u5904\u7406\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u5bbd\u5ea6<\/td>\n<td>\u56fa\u5b9a\u5bbd\u5ea6&#xff08;e.g., AxSIZE\u6307\u5b9a\u5355\u4e2abeat\u7684\u5b57\u8282\u6570&#xff09;\u3002<\/td>\n<td>\u652f\u6301\u5411\u91cf\u5bbd\u5ea6&#xff08;vector length&#xff09;&#xff0c;\u53ef\u52a8\u6001\u6216\u56fa\u5b9a&#xff08;e.g., \u591a\u4e2abeats\u7ec4\u6210\u5411\u91cf&#xff09;\u3002\u5728ARM SVE&#xff08;Scalable Vector Extension&#xff09;\u4e2d&#xff0c;\u5411\u91cf\u957f\u5ea6\u53ef\u8fbe2048\u4f4d\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u5730\u5740\u5904\u7406<\/td>\n<td>\u5355\u4e00\u57fa\u5730\u5740&#xff08;AxADDR&#xff09;&#xff0c;\u64cd\u4f5c\u76f4\u63a5\u5e94\u7528\u4e8e\u8be5\u5730\u5740\u3002<\/td>\n<td>\u57fa\u5730\u5740&#xff08;AxADDR&#xff09;\u52a0\u4e0a\u5411\u91cf\u504f\u79fb&#xff0c;\u53ef\u80fd\u5bfc\u81f4\u201c\u5730\u5740\u81a8\u80c0\u201d&#xff08;\u89c1\u4e0b\u8282&#xff09;\u3002\u64cd\u4f5c\u5e94\u7528\u4e8e\u8fde\u7eed\u7684\u5411\u91cf\u5143\u7d20\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u64cd\u4f5c\u7c7b\u578b<\/td>\n<td>\u7b80\u5355\u539f\u5b50\u5982AtomicAdd&#xff08;\u52a0\u6cd5&#xff09;\u3001AtomicSwap&#xff08;\u4ea4\u6362&#xff09;\u3001AtomicCompare&#xff08;\u6bd4\u8f83\u5e76\u4ea4\u6362&#xff09;\u3002<\/td>\n<td>\u6269\u5c55\u5230\u5411\u91cf\u7ea7\u522b&#xff0c;\u5982\u5411\u91cf\u52a0\u6cd5&#xff08;Vector AtomicAdd&#xff09;\u3001\u5411\u91cf\u6bd4\u8f83\u3002\u6bcf\u4e2a\u5411\u91cf\u5143\u7d20\u72ec\u7acb\u4f46\u6574\u4f53\u539f\u5b50\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u4e8b\u52a1\u7ed3\u6784<\/td>\n<td>\u5355\u4e2a\u5199burst&#xff08;W\u901a\u9053\u4e00\u4e2a\u6216\u5c11\u6570beats&#xff09;&#xff0c;\u54cd\u5e94\u5728B\u901a\u9053\u3002<\/td>\n<td>\u591abeat burst&#xff08;W\u901a\u9053\u591a\u4e2abeats\u8868\u793a\u5411\u91cf\u6570\u636e&#xff09;&#xff0c;\u6574\u4f53\u4f5c\u4e3a\u4e00\u4e2a\u539f\u5b50\u4e8b\u52a1\u5904\u7406\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u539f\u5b50\u6027\u4fdd\u8bc1<\/td>\n<td>\u786e\u4fdd\u5355\u4e00\u5143\u7d20\u7684\u8bfb-\u4fee\u6539-\u5199&#xff08;RMW&#xff09;\u4e0d\u53ef\u4e2d\u65ad\u3002<\/td>\n<td>\u786e\u4fdd\u6574\u4e2a\u5411\u91cf\u7684RMW\u4e0d\u53ef\u4e2d\u65ad&#xff0c;\u5373\u4f7f\u8de8\u8d8a\u591a\u4e2a\u5185\u5b58\u4f4d\u7f6e\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u6027\u80fd\u5f00\u9500<\/td>\n<td>\u8f83\u4f4e&#xff1b;\u9002\u5408\u7b80\u5355\u540c\u6b65&#xff08;\u5982\u9501\u53d8\u91cf&#xff09;\u3002<\/td>\n<td>\u8f83\u9ad8&#xff1b;\u9700\u8981\u66f4\u591a\u7f13\u51b2\u548c\u5904\u7406\u903b\u8f91&#xff0c;\u9002\u5408\u9ad8\u541e\u5410\u5411\u91cf\u8ba1\u7b97\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u786c\u4ef6\u8981\u6c42<\/td>\n<td>Slave\u9700\u652f\u6301\u57fa\u672cRMW\u903b\u8f91\u3002<\/td>\n<td>Slave\u9700\u652f\u6301\u5411\u91cf\u5f15\u64ce&#xff08;\u5982SIMD\u5355\u5143&#xff09;&#xff0c;\u5e76\u5904\u7406\u5411\u91cf\u5bf9\u9f50\/\u81a8\u80c0\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u793a\u4f8b\u6307\u4ee4\u6620\u5c04<\/td>\n<td>\u5bf9\u5e94ARMv8\u7684\u6807\u91cf\u539f\u5b50\u6307\u4ee4&#xff08;\u5982LDADD&#xff09;\u3002<\/td>\n<td>\u5bf9\u5e94ARM SVE\u7684\u5411\u91cf\u539f\u5b50\u6307\u4ee4&#xff08;\u5982\u539f\u5b50\u5411\u91cf\u52a0\u8f7d\/\u5b58\u50a8&#xff09;\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li>\u5171\u540c\u70b9&#xff1a;\u4e24\u8005\u90fd\u4f7f\u7528AxATOP\u5b57\u6bb5\u6307\u5b9a\u64cd\u4f5c\u7c7b\u578b&#xff0c;\u90fd\u652f\u6301Exclusive Access&#xff08;\u72ec\u5360\u8bbf\u95ee&#xff09;\u4ee5\u5b9e\u73b0LL\/SC\u8bed\u4e49&#xff0c;\u90fd\u5728B\u901a\u9053\u8fd4\u56de\u7ed3\u679c&#xff08;e.g., \u65e7\u503c&#xff09;\u3002<\/li>\n<li>\u4e3a\u4ec0\u4e48\u5f15\u5165Vector Atomic&#xff1f;\u5728AI\u3001\u56fe\u5f62\u5904\u7406\u548cHPC\u4e2d&#xff0c;\u5411\u91cf\u64cd\u4f5c\u5e38\u89c1&#xff08;e.g., Tensor Core in GPU&#xff09;\u3002Scalar\u4e0d\u8db3\u4ee5\u9ad8\u6548\u5904\u7406\u6570\u7ec4&#xff0c;\u800cVector\u5141\u8bb8\u786c\u4ef6\u52a0\u901f\u5411\u91cf\u539f\u5b50\u6027&#xff0c;\u63d0\u9ad8\u5e76\u884c\u5ea6\u3002<\/li>\n<\/ul>\n<h5>1.3 \u793a\u4f8b<\/h5>\n<ul>\n<li>Scalar Atomic&#xff1a;\u4e3b\u8bbe\u5907\u53d1\u51faAtomicAdd\u5230\u5730\u57400x1000&#xff0c;\u6dfb\u52a0\u503c5\u3002Slave\u8bfb\u53d60x1000\u7684\u503c&#xff08;e.g., 10&#xff09;&#xff0c;\u52a05\u53d8\u4e3a15&#xff0c;\u5199\u56de&#xff0c;\u5e76\u8fd4\u56de\u65e7\u503c10\u3002<\/li>\n<li>Vector Atomic&#xff1a;\u4e3b\u8bbe\u5907\u53d1\u51faVector AtomicAdd\u5230\u57fa\u5730\u57400x2000&#xff0c;\u5411\u91cf\u957f\u5ea64&#xff08;e.g., \u6dfb\u52a0[1,2,3,4]\u5230[10,20,30,40]&#xff09;&#xff0c;\u7ed3\u679c[11,22,33,44]&#xff0c;\u8fd4\u56de\u65e7\u5411\u91cf[10,20,30,40]\u3002\u6574\u4e2a\u64cd\u4f5c\u539f\u5b50&#xff0c;\u5373\u4f7f\u5728\u591a\u6838\u7ade\u4e89\u4e0b\u3002<\/li>\n<\/ul>\n<h3>2. Vector Atomic\u5730\u5740\u81a8\u80c0\u7684\u6982\u5ff5\u3001\u80cc\u666f\u548c\u573a\u666f<\/h3>\n<h5>2.1 \u6982\u5ff5<\/h5>\n<p>\u00a0 \u00a0 \u00a0 \u00a0Vector Atomic Address Inflation&#xff08;\u5411\u91cf\u539f\u5b50\u5730\u5740\u81a8\u80c0&#xff09;\u662f\u6307\u5728Vector Atomic\u64cd\u4f5c\u4e2d&#xff0c;\u4e8b\u52a1\u7684\u5730\u5740\u8303\u56f4\u56e0\u5411\u91cf\u5bbd\u5ea6&#xff08;vector length&#xff09;\u800c\u201c\u81a8\u80c0\u201d\u6216\u6269\u5c55\u7684\u73b0\u8c61\u3002\u5177\u4f53\u6765\u8bf4&#xff1a;<\/p>\n<ul>\n<li>\u57fa\u5730\u5740&#xff08;AxADDR&#xff09;\u662f\u5411\u91cf\u7684\u8d77\u59cb\u70b9&#xff0c;\u4f46\u5b9e\u9645\u64cd\u4f5c\u8986\u76d6\u8fde\u7eed\u7684\u5730\u5740\u8303\u56f4&#xff08;e.g., AxADDR &#043; \u5411\u91cf\u504f\u79fb&#xff09;\u3002<\/li>\n<li>\u201c\u81a8\u80c0\u201d\u610f\u5473\u7740\u5730\u5740\u7a7a\u95f4\u7684\u6709\u6548\u4f7f\u7528\u7387\u964d\u4f4e&#xff0c;\u6216\u5730\u5740\u8ba1\u7b97\u590d\u6742\u5316&#xff0c;\u56e0\u4e3a\u5411\u91cf\u53ef\u80fd\u8de8\u8d8a\u591a\u4e2a\u7f13\u5b58\u884c\u3001\u9875\u8fb9\u754c\u6216\u603b\u7ebfburst\u8fb9\u754c&#xff0c;\u5bfc\u81f4&#xff1a;\n<ul>\n<li>\u989d\u5916\u5730\u5740\u751f\u6210&#xff08;e.g., \u81ea\u52a8\u8ba1\u7b97\u6bcf\u4e2a\u5411\u91cf\u5143\u7d20\u7684\u5730\u5740&#xff09;\u3002<\/li>\n<li>\u6f5c\u5728\u7684\u6027\u80fd\u5f00\u9500&#xff08;\u5982\u66f4\u591a\u603b\u7ebf\u4e8b\u52a1\u6216\u5bf9\u9f50\u586b\u5145&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5728AXI\u4e2d&#xff0c;\u8fd9\u901a\u8fc7AxLEN&#xff08;burst\u957f\u5ea6&#xff09;\u548cAxSIZE&#xff08;beat\u5927\u5c0f&#xff09;\u9690\u5f0f\u5904\u7406&#xff1a;\u5411\u91cf\u88ab\u5206\u89e3\u4e3a\u591a\u4e2abeats&#xff0c;\u6bcf\u4e2abeat\u5bf9\u5e94\u4e00\u4e2a\u5730\u5740\u589e\u91cf&#xff08;e.g., \u5730\u5740 &#061; AxADDR &#043; (beat_index * AxSIZE)&#xff09;\u3002<\/li>\n<\/ul>\n<p>\u00a0 \u00a0 \u00a0 \u00a0\u5982\u679c\u5411\u91cf\u4e0d\u5bf9\u9f50\u6216\u957f\u5ea6\u52a8\u6001&#xff08;e.g., ARM SVE\u7684\u53ef\u4f38\u7f29\u5411\u91cf&#xff09;&#xff0c;\u5730\u5740\u81a8\u80c0\u53ef\u80fd\u5bfc\u81f4\u201c\u6d6a\u8d39\u201d&#xff1a;e.g., \u5206\u914d\u591a\u4e8e\u5b9e\u9645\u9700\u8981\u7684\u5730\u5740\u69fd&#xff0c;\u4ee5\u9002\u5e94\u6700\u5927\u5411\u91cf\u957f\u5ea6\u3002<\/p>\n<h4>2.2 \u80cc\u666f<\/h4>\n<ul>\n<li>\u5f15\u5165\u539f\u56e0&#xff1a;AXI5\u652f\u6301\u5411\u91cf\u64cd\u4f5c\u6e90\u4e8eARM\u67b6\u6784\u7684\u6f14\u8fdb&#xff0c;\u7279\u522b\u662fSVE&#xff08;Scalable Vector Extension&#xff09;&#xff0c;\u5141\u8bb8\u5411\u91cf\u957f\u5ea6\u4ece128\u4f4d\u52302048\u4f4d\u52a8\u6001\u53d8\u5316\u3002\u8fd9\u63d0\u9ad8\u4e86\u5e76\u884c\u8ba1\u7b97\u6548\u7387&#xff0c;\u4f46\u5e26\u6765\u4e86\u5730\u5740\u7ba1\u7406\u6311\u6218\u3002<\/li>\n<li>\u95ee\u9898\u6839\u6e90&#xff1a;\u4f20\u7edf\u603b\u7ebf&#xff08;\u5982AXI4&#xff09;\u5047\u8bbe\u56fa\u5b9a\u5bbd\u5ea6\u4e8b\u52a1&#xff1b;\u5411\u91cf\u5f15\u5165\u53d8\u957f&#xff0c;\u5730\u5740\u9700\u201c\u81a8\u80c0\u201d\u4ee5\u8986\u76d6\u6240\u6709\u5143\u7d20&#xff08;e.g., \u4e00\u4e2a512\u4f4d\u5411\u91cf\u53ef\u80fd\u97008\u4e2a64\u4f4d\u5730\u5740\u69fd&#xff09;\u3002<\/li>\n<li>\u76f8\u5173\u89c4\u8303&#xff1a;\u5728AXI5\u4e2d&#xff0c;Vector Atomic\u901a\u8fc7AxATOP\u7684\u6269\u5c55\u4f4d\u6307\u5b9a\u5411\u91cf\u6a21\u5f0f\u3002\u5730\u5740\u81a8\u80c0\u662f\u5b9e\u73b0\u7ec6\u8282&#xff0c;\u5e38\u5728NoC\u6216\u5185\u5b58\u63a7\u5236\u5668\u4e2d\u5904\u7406&#xff0c;\u4ee5\u786e\u4fdd\u539f\u5b50\u6027\u548c\u4e00\u81f4\u6027\u3002<\/li>\n<li>\u6f5c\u5728\u5f71\u54cd&#xff1a;\n<ul>\n<li>\u6027\u80fd&#xff1a;\u81a8\u80c0\u53ef\u80fd\u589e\u52a0\u5ef6\u8fdf&#xff08;e.g., \u9700\u591a\u4e2a\u5185\u5b58\u8bbf\u95ee&#xff09;\u3002<\/li>\n<li>\u8d44\u6e90&#xff1a;\u66f4\u591a\u7f13\u51b2\u7528\u4e8e\u4e34\u65f6\u5b58\u50a8\u81a8\u80c0\u5730\u5740\u3002<\/li>\n<li>\u4e00\u81f4\u6027&#xff1a;\u786e\u4fdd\u81a8\u80c0\u5730\u5740\u8303\u56f4\u6574\u4f53\u539f\u5b50&#xff0c;\u9632\u6b62\u90e8\u5206\u66f4\u65b0\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>2.3 \u5728\u4ec0\u4e48\u573a\u666f\u4e0b\u4f1a\u51fa\u73b0&#xff1f;<\/h4>\n<p>\u00a0 \u00a0 \u00a0 \u00a0Vector Atomic\u5730\u5740\u81a8\u80c0\u4e3b\u8981\u51fa\u73b0\u5728\u9700\u8981\u5904\u7406\u5411\u91cf\u6570\u636e\u7684\u5e76\u53d1\u3001\u9ad8\u6027\u80fd\u573a\u666f\u4e2d&#xff0c;\u5c24\u5176\u5f53\u5411\u91cf\u957f\u5ea6\u4e0d\u56fa\u5b9a\u6216\u4e0d\u5bf9\u9f50\u65f6\u3002\u5e38\u89c1\u573a\u666f\u5305\u62ec&#xff1a;<\/p>\n<li>\n<h5>\u591a\u6838\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u5411\u91cf\u6570\u636e&#xff1a;<\/h5>\n<ul>\n<li>\u573a\u666f&#xff1a;\u5728AI\u52a0\u901f\u5668&#xff08;\u5982Tensor Processing Unit&#xff09;\u4e2d&#xff0c;\u591a\u4e2a\u6838\u5e76\u53d1\u66f4\u65b0\u5171\u4eab\u5f20\u91cf&#xff08;tensor&#xff09;\u3002Vector Atomic\u786e\u4fdd\u539f\u5b50\u6027&#xff0c;\u4f46\u5982\u679c\u5411\u91cf\u8de8\u8d8a\u9875\u8fb9\u754c&#xff0c;\u5730\u5740\u81a8\u80c0\u53d1\u751f&#xff08;e.g., \u57fa\u5730\u57400x1000&#xff0c;\u5411\u91cf\u957f512\u4f4d&#xff0c;\u81a8\u80c0\u52300x1000~0x1040&#xff09;\u3002<\/li>\n<li>\u4e3a\u4ec0\u4e48\u81a8\u80c0&#xff1a;\u603b\u7ebf\u9700\u751f\u6210\u4e2d\u95f4\u5730\u5740\u4ee5\u586b\u5145burst&#xff0c;\u5bfc\u81f4\u6709\u6548\u5730\u5740\u201c\u81a8\u80c0\u201d\u8d85\u51fa\u6700\u5c0f\u9700\u6c42\u3002<\/li>\n<li>\u5f71\u54cd&#xff1a;\u5982\u679c\u4e0d\u5904\u7406&#xff0c;\u53ef\u80fd\u5bfc\u81f4\u7f13\u5b58\u5931\u6548\u6216\u6b7b\u9501\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<h5>SIMD\/VECTOR\u5904\u7406\u5728HPC\u6216GPU-like SoC\u4e2d&#xff1a;<\/h5>\n<ul>\n<li>\u573a\u666f&#xff1a;ARM-based\u670d\u52a1\u5668&#xff08;\u5982Ampere Altra&#xff09;\u4e2d\u4f7f\u7528SVE\u6307\u4ee4\u8fdb\u884c\u77e9\u9635\u8fd0\u7b97\u3002Vector AtomicAdd\u5e94\u7528\u4e8e\u6d6e\u70b9\u5411\u91cf&#xff1b;\u52a8\u6001\u5411\u91cf\u957f\u5ea6&#xff08;e.g., 256\u4f4d\u52301024\u4f4d&#xff09;\u5bfc\u81f4\u5730\u5740\u8ba1\u7b97\u81a8\u80c0\u3002<\/li>\n<li>\u4e3a\u4ec0\u4e48\u81a8\u80c0&#xff1a;\u5411\u91cf\u5143\u7d20\u9700\u5bf9\u9f50\u5230\u603b\u7ebf\u5bbd\u5ea6&#xff08;e.g., 64\u5b57\u8282\u5bf9\u9f50&#xff09;&#xff0c;\u586b\u5145\u96f6\u6216\u65e0\u6548\u6570\u636e&#xff0c;\u81a8\u80c0\u5730\u5740\u8303\u56f4\u3002<\/li>\n<li>\u5f71\u54cd&#xff1a;\u9ad8\u8d1f\u8f7d\u4e0b&#xff0c;\u81a8\u80c0\u589e\u52a0\u603b\u7ebf\u62e5\u585e&#xff0c;\u964d\u4f4e\u541e\u5410\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<h5>\u5185\u5b58\u5bc6\u96c6\u578b\u5e94\u7528\u4e2d\u7684\u9501-free\u7f16\u7a0b&#xff1a;<\/h5>\n<ul>\n<li>\u573a\u666f&#xff1a;\u5728NoC-based SoC&#xff08;\u5982\u6c7d\u8f66ADAS\u7cfb\u7edf&#xff09;\u4e2d&#xff0c;\u4f20\u611f\u5668\u6570\u636e\u4f5c\u4e3a\u5411\u91cf\u88ab\u539f\u5b50\u66f4\u65b0\u3002e.g., \u5411\u91cf\u8868\u793a\u56fe\u50cf\u884c&#xff1b;\u66f4\u65b0\u65f6&#xff0c;\u5730\u5740\u81a8\u80c0\u4ee5\u5339\u914dDMA burst\u5927\u5c0f\u3002<\/li>\n<li>\u4e3a\u4ec0\u4e48\u81a8\u80c0&#xff1a;AXI burst\u9700\u56fa\u5b9a\u957f\u5ea6&#xff1b;\u5411\u91cf\u4e0d\u5339\u914d\u65f6&#xff0c;\u786c\u4ef6\u201c\u81a8\u80c0\u201d\u5730\u5740\u4ee5\u5b8c\u6210\u4e8b\u52a1\u3002<\/li>\n<li>\u5f71\u54cd&#xff1a;\u5b9e\u65f6\u7cfb\u7edf\u4e2d&#xff0c;\u81a8\u80c0\u53ef\u80fd\u8fdd\u53cd\u5ef6\u8fdf\u7ea6\u675f\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<h5>\u8fb9\u7f18\u60c5\u51b5&#xff1a;\u4e0d\u5bf9\u9f50\u5411\u91cf\u6216\u8de8\u8bbe\u5907\u4f20\u8f93&#xff08;e.g., CPU\u5230\u52a0\u901f\u5668\u7684\u5411\u91cf\u539f\u5b50&#xff09;&#xff0c;\u81a8\u80c0\u7528\u4e8e\u586b\u5145\u95f4\u9699&#xff0c;\u786e\u4fdd\u539f\u5b50\u6027\u3002<\/h5>\n<\/li>\n<p>\u00a0 \u00a0 \u00a0 \u00a0\u7f13\u89e3\u65b9\u6cd5&#xff1a;\u5728\u8bbe\u8ba1\u4e2d&#xff0c;\u4f7f\u7528\u5730\u5740\u5bf9\u9f50\u903b\u8f91\u3001\u538b\u7f29burst\u6216\u4e13\u7528\u5411\u91cf\u5f15\u64ce\u51cf\u5c11\u81a8\u80c0\u3002\u6a21\u62df\u5de5\u5177&#xff08;\u5982BookSim&#xff09;\u53ef\u91cf\u5316\u81a8\u80c0\u5f00\u9500\u3002<\/p>\n<h3>3. RTL\u4ee3\u7801\u793a\u4f8b<\/h3>\n<p>\u00a0 \u00a0 \u00a0 \u00a0\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5316\u7684Verilog RTL\u4ee3\u7801\u793a\u4f8b&#xff0c;\u5c55\u793aAXI Slave\u6a21\u5757\u5904\u7406Scalar\u548cVector Atomic\u64cd\u4f5c\u3002\u91cd\u70b9\u7a81\u51fa\u533a\u522b\u548c\u5730\u5740\u81a8\u80c0\u5904\u7406&#xff1a;<\/p>\n<ul>\n<li>Scalar&#xff1a;\u7b80\u5355RMW\u3002<\/li>\n<li>Vector&#xff1a;\u5904\u7406\u5411\u91cf&#xff08;\u5047\u8bbe\u56fa\u5b9a\u957f\u5ea64&#xff09;&#xff0c;\u6a21\u62df\u5730\u5740\u81a8\u80c0&#xff08;\u751f\u6210\u81a8\u80c0\u5730\u5740\u6570\u7ec4&#xff09;\u3002<\/li>\n<li>\u63a5\u53e3\u7b80\u5316&#xff08;\u4ec5\u5199\u901a\u9053&#xff09;&#xff1b;\u5b9e\u9645\u9700\u5b8c\u6574AXI\u63e1\u624b\u548c\u9519\u8bef\u5904\u7406\u3002<\/li>\n<\/ul>\n<p>module axi_atomic_slave (<br \/>\n    input clk,<br \/>\n    input reset_n,<\/p>\n<p>    \/\/ AXI Write Address Channel<br \/>\n    input [3:0] awid,<br \/>\n    input [31:0] awaddr,<br \/>\n    input [7:0] awlen,     \/\/ Burst length (for vector)<br \/>\n    input [2:0] awsize,    \/\/ Beat size<br \/>\n    input [1:0] awburst,<br \/>\n    input [5:0] awatop,    \/\/ Atomic operation type (AXI5)<br \/>\n    input awvalid,<br \/>\n    output reg awready,<\/p>\n<p>    \/\/ AXI Write Data Channel<br \/>\n    input [63:0] wdata,    \/\/ Assume 64-bit data (vector elements)<br \/>\n    input [7:0] wstrb,<br \/>\n    input wlast,<br \/>\n    input wvalid,<br \/>\n    output reg wready,<\/p>\n<p>    \/\/ AXI Write Response Channel<br \/>\n    output reg [3:0] bid,<br \/>\n    output reg [1:0] bresp, \/\/ OKAY or error<br \/>\n    output reg bvalid,<br \/>\n    input bready<br \/>\n);<\/p>\n<p>    \/\/ Internal memory (simplified, 256 entries x 64-bit)<br \/>\n    reg [63:0] mem [0:255];<\/p>\n<p>    \/\/ Atomic type decoding (simplified)<br \/>\n    wire is_atomic &#061; (awatop !&#061; 0);<br \/>\n    wire is_vector &#061; (awatop[5] &#061;&#061; 1); \/\/ Assume bit5 indicates vector<br \/>\n    wire [3:0] atop_code &#061; awatop[3:0]; \/\/ e.g., 4&#039;h1 &#061; Add<\/p>\n<p>    \/\/ Address inflation for vector: generate expanded addresses<br \/>\n    reg [31:0] inflated_addr [0:3]; \/\/ Assume max vector len&#061;4 for simplicity<br \/>\n    integer i;<\/p>\n<p>    always &#064;(posedge clk or negedge reset_n) begin<br \/>\n        if (!reset_n) begin<br \/>\n            awready &lt;&#061; 1;<br \/>\n            wready &lt;&#061; 0;<br \/>\n            bvalid &lt;&#061; 0;<br \/>\n        end else begin<br \/>\n            \/\/ AW Handshake<br \/>\n            if (awvalid &amp;&amp; awready) begin<br \/>\n                awready &lt;&#061; 0;<br \/>\n                wready &lt;&#061; 1;<\/p>\n<p>                \/\/ Address inflation for vector<br \/>\n                if (is_vector) begin<br \/>\n                    for (i &#061; 0; i &lt;&#061; awlen; i &#061; i &#043; 1) begin<br \/>\n                        inflated_addr[i] &lt;&#061; awaddr &#043; (i &lt;&lt; awsize); \/\/ Inflate: addr &#043; offset (shift by size)<br \/>\n                    end<br \/>\n                end else begin<br \/>\n                    inflated_addr[0] &lt;&#061; awaddr; \/\/ Scalar: no inflation<br \/>\n                end<br \/>\n            end<\/p>\n<p>            \/\/ W Handshake and Atomic Operation<br \/>\n            if (wvalid &amp;&amp; wready) begin<br \/>\n                if (is_atomic) begin<br \/>\n                    if (is_vector) begin<br \/>\n                        \/\/ Vector Atomic: RMW on inflated addresses (e.g., Add)<br \/>\n                        for (i &#061; 0; i &lt;&#061; awlen; i &#061; i &#043; 1) begin<br \/>\n                            if (atop_code &#061;&#061; 4&#039;h1) begin \/\/ AtomicAdd<br \/>\n                                mem[inflated_addr[i][7:0]] &lt;&#061; mem[inflated_addr[i][7:0]] &#043; wdata; \/\/ Simplified, assume wdata per beat<br \/>\n                            end<br \/>\n                        end<br \/>\n                    end else begin<br \/>\n                        \/\/ Scalar Atomic: RMW on single address (e.g., Add)<br \/>\n                        if (atop_code &#061;&#061; 4&#039;h1) begin<br \/>\n                            mem[awaddr[7:0]] &lt;&#061; mem[awaddr[7:0]] &#043; wdata;<br \/>\n                        end<br \/>\n                    end<br \/>\n                end<\/p>\n<p>                if (wlast) begin<br \/>\n                    wready &lt;&#061; 0;<br \/>\n                    bid &lt;&#061; awid;<br \/>\n                    bresp &lt;&#061; 2&#039;b00; \/\/ OKAY<br \/>\n                    bvalid &lt;&#061; 1;<br \/>\n                end<br \/>\n            end<\/p>\n<p>            \/\/ B Handshake<br \/>\n            if (bvalid &amp;&amp; bready) begin<br \/>\n                bvalid &lt;&#061; 0;<br \/>\n                awready &lt;&#061; 1;<br \/>\n            end<br \/>\n        end<br \/>\n    end<\/p>\n<p>endmodule<\/p>\n<h4>\u4ee3\u7801\u89e3\u91ca<\/h4>\n<ul>\n<li>Scalar\u5904\u7406&#xff1a;\u76f4\u63a5\u4f7f\u7528awaddr\u8fdb\u884cRMW&#xff0c;\u65e0\u81a8\u80c0\u3002<\/li>\n<li>Vector\u5904\u7406&#xff1a;\u5728AW\u9636\u6bb5\u751f\u6210inflated_addr\u6570\u7ec4&#xff08;\u6a21\u62df\u81a8\u80c0&#xff1a;\u6bcf\u4e2abeat\u504f\u79fb&lt;&lt; awsize&#xff09;\u3002\u7136\u540e\u5728W\u9636\u6bb5\u5bf9\u6bcf\u4e2a\u81a8\u80c0\u5730\u5740\u5e94\u7528\u64cd\u4f5c\u3002<\/li>\n<li>\u5047\u8bbe&#xff1a;\u5411\u91cf\u957f\u5ea6\u7531awlen\u6307\u5b9a&#xff08;e.g., 3\u8868\u793a4 beats&#xff09;&#xff1b;awatop[5]\u81ea\u5b9a\u4e49\u8868\u793avector&#xff08;\u5b9e\u9645\u9700\u6309\u89c4\u8303&#xff09;\u3002\u5185\u5b58\u7528\u6570\u7ec4\u6a21\u62df\u3002<\/li>\n<li>\u4f7f\u7528&#xff1a;\u5b9e\u4f8b\u5316\u6b64\u6a21\u5757\u4f5c\u4e3aAXI slave\u3002\u4e3b\u8bbe\u5907\u53d1\u51fa\u4e8b\u52a1&#xff08;e.g., awatop&#061;6&#039;h21\u8868\u793aVector AtomicAdd&#xff09;&#xff0c;slave\u5904\u7406\u81a8\u80c0\u5e76\u54cd\u5e94\u3002<\/li>\n<li>\u6269\u5c55&#xff1a;\u5b9e\u9645RTL\u9700\u6dfb\u52a0\u8bfb\u901a\u9053&#xff08;AR\/R&#xff09;\u3001\u72ec\u5360\u76d1\u63a7\u548c\u9519\u8bef\u5904\u7406&#xff08;\u5982\u81a8\u80c0\u8d8a\u754c\u65f6\u8fd4\u56deSLVERR&#xff09;\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb402\u6b21\uff0c\u70b9\u8d5e16\u6b21\uff0c\u6536\u85cf11\u6b21\u3002AXI5\u539f\u5b50\u64cd\u4f5c\u4e0e\u5411\u91cf\u5730\u5740\u81a8\u80c0\u673a\u5236 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