{"height":"190","categories":["FPGA"],"published":"2020-05-01 14:49:58","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/Ryuz88/","blog_title":"Ryuz's tech blog","provider_url":"https://hatena.blog","blog_url":"https://blog.rtc-lab.com/","image_url":null,"url":"https://blog.rtc-lab.com/entry/2021/04/03/201054","width":"100%","author_name":"Ryuz88","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.rtc-lab.com%2Fentry%2F2021%2F04%2F03%2F201054\" title=\"uio\u3084udmabuf\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308bC++\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u307f\u308b(\u5fa9\u523b\u8a18\u4e8b) - Ryuz&#39;s tech blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"uio\u3084udmabuf\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308bC++\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u307f\u308b(\u5fa9\u523b\u8a18\u4e8b)","description":"\u304a\u3057\u3089\u305b \u4ee5\u524dQrunch\u3067\u66f8\u3044\u3066\u3044\u305f\u8a18\u4e8b\u306e\u5fa9\u523b\u3067\u3059\u3002 \u306f\u3058\u3081\u306b Xilinx\u793e\u306e Zynq \u3084 ZynqMP \u306a\u3069\u306ePL(\u30d7\u30ed\u30b0\u30e9\u30de\u30d6\u30eb\u30ed\u30b8\u30c3\u30af)\u4ed8\u304d\u306eSoC\u3067\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3059\u308b\u5834\u5408\u3001PL\u90e8\u5206\u306b\u3042\u308b\u81ea\u5206\u3067\u4f5c\u3063\u305f\u56de\u8def\u306e\u30ec\u30b8\u30b9\u30bf\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u308a\u3001\u30e1\u30e2\u30ea\u9818\u57df\u3092\u56de\u8def\u304b\u3089\u306e\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u7528\u306b\u5272\u308a\u5f53\u3066\u305f\u308a\u3057\u305f\u3044\u3068\u3044\u3063\u305f\u3053\u3068\u304c\u767a\u751f\u3057\u307e\u3059\u3002 \u305d\u3046\u3044\u3063\u305f\u3068\u304d\u306b Linux\u6a19\u6e96\u306e uio (User space I/O) \u3084\u3001iwkzm\u6c0f\u306eudmabuf\u304c\u4ee5\u4e0a\u306b\u4fbf\u5229\u3067\u3059\u3002 \u3053\u308c\u3089\u306f\u30aa\u30fc\u30d7\u30f3\u3057\u3066mmap\u3057\u3066\u3057\u307e\u3048\u3070\u3001\u8ad6\u7406\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593\u306b\u30de\u30c3\u30d7\u3055\u308c\u3001MMU\u306e\u7121\u3044\u30b9\u30bf\u30f3\u30c9\u30a2\u30a2\u30ed\u30f3\u74b0\u5883\u306e\u30de\u30a4\u30b3\u30f3\u306e\u3088\u3046\u306b\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u304d\u308b\u306e\u2026","type":"rich"}