{"id":86995,"date":"2026-07-29T16:32:36","date_gmt":"2026-07-29T08:32:36","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/86995.html"},"modified":"2026-07-29T16:32:36","modified_gmt":"2026-07-29T08:32:36","slug":"s5000c%e6%9c%8d%e5%8a%a1%e5%99%a8acpi-iort%e5%8f%8c%e8%b7%af%e5%be%84%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/86995.html","title":{"rendered":"S5000C\u670d\u52a1\u5668ACPI IORT\u53cc\u8def\u5f84\u89e3\u6790"},"content":{"rendered":"<p>\u5728\u9ad8\u6027\u80fd\u670d\u52a1\u5668\u67b6\u6784&#xff08;\u5982 S5000C&#xff09;\u4e2d&#xff0c;\u786c\u4ef6\u5916\u8bbe\u53d1\u8d77\u8bbf\u95ee\u65f6\u7684\u8eab\u4efd\u6807\u8bc6&#xff08;ID&#xff09;\u8def\u7531\u548c\u8f6c\u6362\u662f\u786e\u4fdd\u7cfb\u7edf I\/O \u6027\u80fd\u4e0e\u5b89\u5168\u7684\u6838\u5fc3\u3002ACPI \u89c4\u8303\u4e2d\u7684 IORT (I\/O Remapping Table) \u5145\u5f53\u4e86\u786c\u4ef6\u62d3\u6251\u7684\u201c\u5bfc\u822a\u56fe\u201d\u3002<\/p>\n<p>\u901a\u8fc7\u5206\u6790 S5000C \u56fa\u4ef6\u5bfc\u51fa\u7684 IORT \u539f\u59cb\u6570\u636e&#xff0c;\u6211\u4eec\u53ef\u4ee5\u6e05\u6670\u5730\u8fd8\u539f\u51fa\u4e24\u7c7b\u5b8c\u5168\u4e0d\u540c\u7684\u6570\u636e\u6d41\u5411&#xff1a;\u4e00\u79cd\u662f\u7ecf\u8fc7 SMMU \u865a\u62df\u5316\u7684\u201c\u6807\u51c6\u8def\u5f84\u201d&#xff0c;\u53e6\u4e00\u79cd\u662f\u76f4\u63a5\u901a\u5f80 ITS \u7684\u201c\u9ad8\u901f\u76f4\u8fde\u8def\u5f84\u201d\u3002<\/p>\n<hr \/>\n<h3>1. IORT \u6838\u5fc3\u7ec4\u4ef6\u53ca\u5176\u5728 S5000C \u4e2d\u7684\u89d2\u8272<\/h3>\n<p>\u5728 S5000C \u7684\u786c\u4ef6\u5b9a\u4e49\u4e2d&#xff0c;IORT \u8282\u70b9\u5171\u540c\u6784\u5efa\u4e86\u4e00\u4e2a\u591a\u7ea7\u6620\u5c04\u4f53\u7cfb&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u8d77\u70b9&#xff1a;PCI Root Complex (Type 02)<\/p>\n<p>\u8fd9\u662f PCIe \u63a7\u5236\u5668\u7684\u903b\u8f91\u62bd\u8c61\u3002\u5b83\u4e0d\u4ec5\u7ba1\u7406\u7269\u7406\u94fe\u8def&#xff0c;\u8fd8\u627f\u62c5\u4e86\u201c\u6d41\u91cf\u8c03\u5ea6\u5458\u201d\u7684\u89d2\u8272\u3002\u5b83\u901a\u8fc7\u5185\u90e8\u7684 Mapping \u6761\u76ee&#xff0c;\u6839\u636e PCIe \u8bbe\u5907\u7684 RID (Requester ID) \u5c06\u6d41\u91cf\u5206\u53d1\u5230\u4e0d\u540c\u7684\u5904\u7406\u540e\u7aef<\/p>\n<\/li>\n<li>\n<p>\u4e2d\u8f6c\u7ad9&#xff1a;SMMUv3 (Type 04)<\/p>\n<p>\u7cfb\u7edf\u5185\u5b58\u7ba1\u7406\u5355\u5143\u3002\u5b83\u7684\u5b58\u5728\u4e3a\u5916\u8bbe\u63d0\u4f9b\u4e86 DMA \u9694\u79bb\u548c\u5730\u5740\u7ffb\u8bd1\u529f\u80fd\u3002\u5728 S5000C \u4e2d&#xff0c;\u7279\u5b9a\u7684 PCIe \u8bbe\u5907\u6d41\u5fc5\u987b\u7ecf\u8fc7 SMMU \u624d\u80fd\u8fdb\u884c\u4e0b\u4e00\u6b65\u6620\u5c04\u3002<\/p>\n<\/li>\n<li>\n<p>\u7ec8\u70b9&#xff1a;ITS Group (Type 00)<\/p>\n<p>\u4e2d\u65ad\u7ffb\u8bd1\u670d\u52a1\u7ec4\u3002\u8fd9\u662f\u6240\u6709 MSI\/MSI-X \u4e2d\u65ad\u8bf7\u6c42\u7684\u76ee\u7684\u5730\u3002ITS \u5c06\u8bbe\u5907\u7684 DeviceID \u7ffb\u8bd1\u4e3a\u7269\u7406\u4e2d\u65ad\u4fe1\u53f7\u3002S5000C \u90e8\u7f72\u4e86\u591a\u4e2a ITS \u5b9e\u4f8b&#xff08;\u5982 ID 2 \u548c ID 3&#xff09;\u4ee5\u5b9e\u73b0\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n<h3>2. \u8282\u70b9\u89e3\u6790<\/h3>\n<h4>ITS Group<\/h4>\n<p>[060h 0096 001h]                        Type : 00<br \/>\n[061h 0097 002h]                      Length : 0018<br \/>\n[063h 0099 001h]                    Revision : 00<br \/>\n[064h 0100 004h]                    Reserved : 00000000<br \/>\n[068h 0104 004h]               Mapping Count : 00000000<br \/>\n[06Ch 0108 004h]              Mapping Offset : 00000000<\/p>\n<p>[070h 0112 004h]                    ItsCount : 00000001<br \/>\n[074h 0116 004h]                 Identifiers : 00000002<\/p>\n<p>[078h 0120 001h]                        Type : 00<br \/>\n[079h 0121 002h]                      Length : 0018<br \/>\n[07Bh 0123 001h]                    Revision : 00<br \/>\n[07Ch 0124 004h]                    Reserved : 00000000<br \/>\n[080h 0128 004h]               Mapping Count : 00000000<br \/>\n[084h 0132 004h]              Mapping Offset : 00000000<\/p>\n<p>[088h 0136 004h]                    ItsCount : 00000001<br \/>\n[08Ch 0140 004h]                 Identifiers : 00000003<\/p>\n<p>\u5728 S5000C \u670d\u52a1\u5668\u7684 IORT \u62d3\u6251\u7ed3\u6784\u4e2d&#xff0c;\u504f\u79fb\u91cf 0x060 \u548c 0x078 \u5904\u7684\u6570\u636e\u63cf\u8ff0\u4e86\u4e24\u4e2a ITS Group (Type 00) \u8282\u70b9\u3002\u5b83\u4eec\u662f\u6574\u4e2a ID \u6620\u5c04\u94fe\u8def\u7684\u201c\u7ec8\u70b9\u7ad9\u201d&#xff0c;\u8d1f\u8d23\u63a5\u6536\u4ece\u4e0a\u6e38&#xff08;\u5982 PCI Root Complex \u6216 SMMU&#xff09;\u4f20\u5bfc\u800c\u6765\u7684 DeviceID&#xff0c;\u5e76\u5c06\u5176\u7ffb\u8bd1\u4e3a\u7269\u7406\u4e2d\u65ad\u3002<\/p>\n<p>1. \u8282\u70b9\u7279\u5f81&#xff1a;\u4f5c\u4e3a\u6620\u5c04\u94fe\u7684\u7ec8\u7aef<\/p>\n<p>\u8fd9\u4e24\u4e2a\u8282\u70b9\u5177\u6709\u5171\u540c\u7684\u7ed3\u6784\u7279\u5f81&#xff0c;\u4f53\u73b0\u4e86\u5b83\u4eec\u5728\u62d3\u6251\u4e2d\u7684\u5730\u4f4d&#xff1a;<\/p>\n<ul>\n<li>\n<p>Type 00&#xff1a;\u6807\u8bc6\u4e3a ITS Group\u3002<\/p>\n<\/li>\n<li>\n<p>Mapping Count: 00&#xff1a;\u6620\u5c04\u8ba1\u6570\u4e3a\u96f6\u3002\u8fd9\u610f\u5473\u7740 ITS \u8282\u70b9\u4e0d\u4f1a\u518d\u5c06 ID \u8f6c\u53d1\u7ed9\u5176\u4ed6\u786c\u4ef6\u3002\u5728 IORT \u6811\u72b6\u7ed3\u6784\u4e2d&#xff0c;\u8fd9\u4ee3\u8868\u4e86\u53f6\u5b50\u8282\u70b9&#xff0c;\u5373\u6570\u636e\u6d41\u7684\u6700\u7ec8\u76ee\u7684\u5730\u3002<\/p>\n<\/li>\n<li>\n<p>Length 0018&#xff1a;\u6bcf\u4e2a ITS \u7ec4\u8282\u70b9\u5360\u636e 24 \u5b57\u8282\u3002<\/p>\n<\/li>\n<\/ul>\n<p>2. \u591a ITS \u5b9e\u4f8b&#xff1a;\u5b9e\u73b0\u8d1f\u8f7d\u5747\u8861\u4e0e\u9694\u79bb<\/p>\n<p>S5000C \u901a\u8fc7\u90e8\u7f72\u591a\u4e2a ITS \u5b9e\u4f8b\u6765\u4f18\u5316\u4e2d\u65ad\u5904\u7406\u6027\u80fd&#xff1a;<\/p>\n<p>ITS \u5b9e\u4f8b 2 (\u504f\u79fb 0x060)<\/p>\n<ul>\n<li>\n<p>Identifiers: 00000002&#xff1a;\u8be5\u8282\u70b9\u5bf9\u5e94\u7cfb\u7edf\u4e2d\u7684 ITS 2\u3002<\/p>\n<\/li>\n<li>\n<p>\u5b9a\u4f4d&#xff1a;\u5b83\u662f\u201c\u6807\u51c6\u8def\u5f84\u201d\u7684\u7ec8\u70b9\u3002\u90a3\u4e9b\u7ecf\u8fc7 SMMU&#xff08;\u504f\u79fb 0x518&#xff09;\u8f6c\u6362\u7684 ID&#xff0c;\u6700\u7ec8\u90fd\u4f1a\u6c47\u805a\u5230\u8fd9\u91cc\u3002<\/p>\n<\/li>\n<\/ul>\n<p>ITS \u5b9e\u4f8b 3 (\u504f\u79fb 0x078)<\/p>\n<ul>\n<li>\n<p>Identifiers: 00000003&#xff1a;\u8be5\u8282\u70b9\u5bf9\u5e94\u7cfb\u7edf\u4e2d\u7684 ITS 3\u3002<\/p>\n<\/li>\n<li>\n<p>\u5b9a\u4f4d&#xff1a;\u5b83\u662f\u201c\u76f4\u8fde\u8def\u5f84\u201d\u7684\u7ec8\u70b9\u3002PCIe \u63a7\u5236\u5668\u4e2d RID \u5728 0x400 &#8211; 0x8FF \u8303\u56f4\u5185\u7684\u8bbe\u5907&#xff0c;\u8df3\u8fc7\u6240\u6709\u4e2d\u95f4\u73af\u8282&#xff0c;\u76f4\u63a5\u7531\u6b64 ITS \u8d1f\u8d23\u3002<\/p>\n<\/li>\n<\/ul>\n<p>3. \u786c\u4ef6\u903b\u8f91\u603b\u7ed3<\/p>\n<p>\u5728 S5000C \u670d\u52a1\u5668\u7684\u8bbe\u8ba1\u4e2d&#xff0c;\u8fd9\u79cd\u53cc ITS \u7684\u914d\u7f6e\u5177\u6709\u660e\u786e\u7684\u786c\u4ef6\u8bed\u4e49&#xff1a;<\/p>\n<li>\n<p>\u8def\u5f84\u89e3\u8026&#xff1a;\u901a\u8fc7\u5c06\u4e0d\u540c\u7684\u8bbe\u5907\u8303\u56f4\u6620\u5c04\u5230\u4e0d\u540c\u7684\u7269\u7406 ITS \u5b9e\u4f8b&#xff0c;\u7cfb\u7edf\u5728\u786c\u4ef6\u5c42\u9762\u5b9e\u73b0\u4e86\u4e2d\u65ad\u8bf7\u6c42\u7684\u5206\u6d41&#xff0c;\u907f\u514d\u4e86\u5355\u4e00\u4e2d\u65ad\u63a7\u5236\u5668\u5728\u9ad8\u5e76\u53d1 I\/O \u4e0b\u7684\u7ade\u4e89\u3002<\/p>\n<\/li>\n<li>\n<p>\u6807\u8bc6\u7b26\u4e00\u81f4\u6027&#xff1a;Identifiers \u5b57\u6bb5\u4e2d\u7684\u6570\u503c&#xff08;2 \u548c 3&#xff09;\u5fc5\u987b\u4e0e\u7cfb\u7edf MADT \u8868&#xff08;\u591a APIC \u63cf\u8ff0\u8868&#xff09;\u4e2d\u7684 GIC ITS \u7ed3\u6784\u7cbe\u786e\u5339\u914d\u3002\u8fd9\u4f7f\u5f97\u64cd\u4f5c\u7cfb\u7edf\u80fd\u591f\u5c06 IORT \u5b9a\u4e49\u7684\u201c\u903b\u8f91\u76ee\u7684\u5730\u201d\u4e0e\u7269\u7406\u4e2d\u65ad\u786c\u4ef6\u5173\u8054\u8d77\u6765\u3002<\/p>\n<\/li>\n<h4>SMMUv3<\/h4>\n<p>[518h 1304 001h]                        Type : 04<br \/>\n[519h 1305 002h]                      Length : 0058<br \/>\n[51Bh 1307 001h]                    Revision : 02<br \/>\n[51Ch 1308 004h]                    Reserved : 00000000<br \/>\n[520h 1312 004h]               Mapping Count : 00000001<br \/>\n[524h 1316 004h]              Mapping Offset : 00000044<\/p>\n<p>[528h 1320 008h]                Base Address : 000000003B200000<br \/>\n[530h 1328 004h]       Flags (decoded below) : 00000009<br \/>\n                             COHACC Override : 1<br \/>\n                               HTTU Override : 0<br \/>\n                      Proximity Domain Valid : 1<br \/>\n                              DeviceID Valid : 0<br \/>\n[534h 1332 004h]                    Reserved : 00000000<br \/>\n[538h 1336 008h]               VATOS Address : 0000000000000000<br \/>\n[540h 1344 004h]                       Model : 00000000<br \/>\n[544h 1348 004h]                  Event GSIV : 0000005E<br \/>\n[548h 1352 004h]                    PRI GSIV : 0000007A<br \/>\n[54Ch 1356 004h]                   GERR GSIV : 00000079<br \/>\n[550h 1360 004h]                   Sync GSIV : 0000005D<br \/>\n[554h 1364 004h]            Proximity Domain : 00000000<br \/>\n[558h 1368 004h]     Device ID Mapping Index : 00000000<\/p>\n<p>[55Ch 1372 004h]                  Input base : 00000100<br \/>\n[560h 1376 004h]                    ID Count : 000002FF<br \/>\n[564h 1380 004h]                 Output Base : 00000100<br \/>\n[568h 1384 004h]            Output Reference : 00000060<br \/>\n[56Ch 1388 004h]       Flags (decoded below) : 00000000<br \/>\n                              Single Mapping : 0<\/p>\n<p>\u5728 S5000C \u670d\u52a1\u5668\u7684 IORT \u62d3\u6251\u4e2d&#xff0c;\u4f4d\u4e8e\u504f\u79fb 0x518 \u7684\u8fd9\u6bb5\u6570\u636e\u63cf\u8ff0\u4e86\u4e00\u4e2a SMMUv3 (Type 04) \u8282\u70b9\u3002\u5b83\u662f\u8fde\u63a5 PCIe \u8bbe\u5907\u4e0e\u5185\u5b58\u3001\u4e2d\u65ad\u63a7\u5236\u5668\u4e4b\u95f4\u7684\u6838\u5fc3\u5b89\u5168\u5c4f\u969c&#xff0c;\u8d1f\u8d23\u5730\u5740\u8f6c\u6362&#xff08;VA-&gt;PA&#xff09;\u548c\u6807\u8bc6\u7b26&#xff08;ID&#xff09;\u7684\u4e8c\u9636\u6bb5\u8def\u7531\u3002<\/p>\n<p>1. \u8282\u70b9\u6838\u5fc3\u5c5e\u6027&#xff1a;\u786c\u4ef6\u8d44\u6e90\u4e0e\u63a7\u5236<\/p>\n<ul>\n<li>\n<p>Type 04 \/ Length 0058&#xff1a;\u6807\u8bc6\u8fd9\u662f\u4e00\u4e2a SMMUv3 \u63a7\u5236\u5668\u8282\u70b9&#xff0c;\u957f\u5ea6\u4e3a 88 \u5b57\u8282\u3002<\/p>\n<\/li>\n<li>\n<p>Base Address (0x3B200000)&#xff1a;\u8fd9\u662f SMMUv3 \u5bc4\u5b58\u5668\u5728\u7cfb\u7edf\u5185\u5b58\u4e2d\u7684\u7269\u7406\u57fa\u5730\u5740\u3002\u786c\u4ef6\u901a\u8fc7\u8be5\u5730\u5740\u63a7\u5236\u6d41\u8868&#xff08;Stream Table&#xff09;\u548c\u914d\u7f6e\u4e0a\u4e0b\u6587\u3002<\/p>\n<\/li>\n<li>\n<p>GSIV \u4e2d\u65ad\u5b9a\u4e49&#xff1a;\u5217\u51fa\u4e86 SMMUv3 \u81ea\u8eab\u7ef4\u62a4\u6240\u9700\u7684\u56db\u4e2a\u5173\u952e\u4e2d\u65ad\u5411\u91cf&#xff08;Event, PRI, GERR, Sync&#xff09;\u3002\u4f8b\u5982&#xff0c;Event GSIV (0x5E) \u7528\u4e8e\u5728\u53d1\u751f\u9519\u8bef\u7684 DMA \u8bbf\u95ee\u65f6\u901a\u8fc7\u4e2d\u65ad\u901a\u77e5\u5904\u7406\u5668\u3002<\/p>\n<\/li>\n<li>\n<p>COHACC Override (0x1)&#xff1a;\u8868\u660e\u8be5 SMMU \u652f\u6301\u786c\u4ef6\u7f13\u5b58\u4e00\u81f4\u6027&#xff0c;\u786e\u4fdd\u4e86\u5728\u590d\u6742\u7684\u5185\u5b58\u6620\u5c04\u8fc7\u7a0b\u4e2d&#xff0c;\u6570\u636e\u5728 CPU \u7f13\u5b58\u4e0e\u5916\u8bbe\u95f4\u4fdd\u6301\u540c\u6b65\u3002<\/p>\n<\/li>\n<\/ul>\n<p>2. \u7279\u6b8a\u6620\u5c04\u7d22\u5f15&#xff1a;Device ID Mapping Index<\/p>\n<ul>\n<li>\n<p>Index 0x00&#xff1a;\u8fd9\u662f\u4e00\u4e2a\u5173\u952e\u53c2\u6570\u3002\u5b83\u6307\u5b9a\u4e86\u5f53 SMMUv3 \u81ea\u8eab\u9700\u8981\u53d1\u8d77\u4e2d\u65ad&#xff08;\u5982\u4e0a\u62a5\u9519\u8bef\u4e8b\u4ef6&#xff09;\u65f6&#xff0c;\u4f7f\u7528\u5176 Mapping \u5217\u8868\u4e2d\u7684\u7b2c 0 \u4e2a\u6761\u76ee\u6765\u786e\u5b9a\u76ee\u7684\u5730\u3002\u8fd9\u786e\u4fdd\u4e86 SMMU \u4e0d\u4ec5\u80fd\u8f6c\u53d1\u522b\u4eba\u7684 ID&#xff0c;\u4e5f\u80fd\u6b63\u786e\u6807\u8bc6\u81ea\u5df1\u7684\u8eab\u4efd\u3002<\/p>\n<\/li>\n<\/ul>\n<p>3. ID \u8f6c\u53d1\u89c4\u5219&#xff1a;StreamID \u7684\u4e8c\u9636\u6bb5\u6620\u5c04<\/p>\n<p>\u8be5\u8282\u70b9\u5305\u542b 1 \u7ec4\u6620\u5c04\u6761\u76ee (Mapping Count: 01)&#xff0c;\u5176\u903b\u8f91\u4f53\u73b0\u4e86 ID \u7684\u201c\u5e73\u79fb\u900f\u4f20\u201d&#xff1a;<\/p>\n<ul>\n<li>\n<p>Input base (0x100)&#xff1a;\u63a5\u6536\u6765\u81ea\u4e0a\u6e38&#xff08;PCI Root Complex&#xff09;\u8303\u56f4\u5728 0x100 \u8d77\u59cb\u7684 ID&#xff08;\u6b64\u5904\u88ab\u79f0\u4e3a StreamID&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>Output Base (0x100)&#xff1a;\u5728\u8f6c\u53d1\u7ed9\u4e0b\u4e00\u7ea7\u65f6&#xff0c;ID \u6570\u503c\u4fdd\u6301\u4e0d\u53d8&#xff0c;\u4f9d\u7136\u4ee5 0x100 \u4f5c\u4e3a\u57fa\u51c6\u8f93\u51fa\u3002<\/p>\n<\/li>\n<li>\n<p>Output Reference (0x060)&#xff1a;\u5173\u952e\u76ee\u7684\u5730\u3002\u6620\u5c04\u5b8c\u6210\u540e&#xff0c;\u4fe1\u53f7\u5c06\u88ab\u9001\u5f80\u504f\u79fb\u91cf\u4e3a 0x060 \u7684\u8282\u70b9&#xff08;\u5bf9\u5e94 S5000C \u7684 ITS 2 \u4e2d\u65ad\u63a7\u5236\u5668&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<h4><\/h4>\n<\/p>\n<h4>PCI Root Complex<\/h4>\n<p>[330h 0816 001h]                        Type : 02<br \/>\n[331h 0817 002h]                      Length : 004C<br \/>\n[333h 0819 001h]                    Revision : 01<br \/>\n[334h 0820 004h]                    Reserved : 00000000<br \/>\n[338h 0824 004h]               Mapping Count : 00000002<br \/>\n[33Ch 0828 004h]              Mapping Offset : 00000024<\/p>\n<p>[340h 0832 008h]           Memory Properties : [IORT Memory Access Properties]<br \/>\n[340h 0832 004h]             Cache Coherency : 00000001<br \/>\n[344h 0836 001h]       Hints (decoded below) : 00<br \/>\n                                   Transient : 0<br \/>\n                              Write Allocate : 0<br \/>\n                               Read Allocate : 0<br \/>\n                                    Override : 0<br \/>\n[345h 0837 002h]                    Reserved : 0000<br \/>\n[347h 0839 001h] Memory Flags (decoded below) : 03<br \/>\n                                   Coherency : 1<br \/>\n                            Device Attribute : 1<br \/>\n[348h 0840 004h]               ATS Attribute : 00000000<br \/>\n[34Ch 0844 004h]          PCI Segment Number : 00000000<br \/>\n[350h 0848 001h]           Memory Size Limit : 30<br \/>\n[351h 0849 002h]          PASID Capabilities : 0000<br \/>\n[353h 0851 001h]                    Reserved : 00<\/p>\n<p>[354h 0852 004h]                  Input base : 00000100<br \/>\n[358h 0856 004h]                    ID Count : 000002FF<br \/>\n[35Ch 0860 004h]                 Output Base : 00000100<br \/>\n[360h 0864 004h]            Output Reference : 00000518<br \/>\n[364h 0868 004h]       Flags (decoded below) : 00000000<br \/>\n                              Single Mapping : 0<\/p>\n<p>[368h 0872 004h]                  Input base : 00000400<br \/>\n[36Ch 0876 004h]                    ID Count : 000004FF<br \/>\n[370h 0880 004h]                 Output Base : 00000400<br \/>\n[374h 0884 004h]            Output Reference : 00000078<br \/>\n[378h 0888 004h]       Flags (decoded below) : 00000000<br \/>\n                              Single Mapping : 0<\/p>\n<p>\u5728 S5000C \u670d\u52a1\u5668\u7684 IORT \u8868\u4e2d&#xff0c;\u8fd9\u6bb5\u4f4d\u4e8e\u504f\u79fb 0x330 \u7684\u6570\u636e\u63cf\u8ff0\u4e86\u4e00\u4e2a PCI Root Complex (Type 02) \u8282\u70b9\u3002\u5b83\u51b3\u5b9a\u4e86\u8be5 PCIe \u63a7\u5236\u5668\u4e0b\u6240\u6709\u8bbe\u5907\u7684 DMA \u548c\u4e2d\u65ad\u4fe1\u53f7\u5e94\u8be5\u5982\u4f55\u8def\u7531\u3002<\/p>\n<p>1. \u8282\u70b9\u57fa\u7840\u5c5e\u6027&#xff1a;\u5b9a\u4e49\u63a7\u5236\u5668\u7684\u7279\u5f81<\/p>\n<ul>\n<li>\n<p>Type 02 \/ Length 004C&#xff1a;\u6807\u8bc6\u8fd9\u662f\u4e00\u4e2a PCI \u6839\u590d\u5408\u7269\u8282\u70b9&#xff0c;\u603b\u957f\u5ea6\u4e3a 76 \u5b57\u8282\u3002<\/p>\n<\/li>\n<li>\n<p>Cache Coherency (0x01)&#xff1a;\u786c\u4ef6\u652f\u6301 Cache \u4e00\u81f4\u6027\u3002\u8fd9\u610f\u5473\u7740\u5916\u8bbe\u8fdb\u884c DMA \u64cd\u4f5c\u65f6&#xff0c;\u786c\u4ef6\u4f1a\u81ea\u52a8\u540c\u6b65 CPU \u7f13\u5b58&#xff0c;\u65e0\u9700\u8f6f\u4ef6\u624b\u52a8\u6267\u884c\u590d\u6742\u7684\u5237\u7f13\u5b58\u64cd\u4f5c&#xff0c;\u6781\u5927\u63d0\u5347\u4e86 I\/O \u6548\u7387\u3002<\/p>\n<\/li>\n<li>\n<p>PCI Segment Number (0x00)&#xff1a;\u8be5\u63a7\u5236\u5668\u7ba1\u7406\u7684\u662f\u7cfb\u7edf\u4e2d\u7684\u7b2c 0 \u53f7 PCI \u57df&#xff08;Segment&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<p>2. \u6620\u5c04\u7b56\u7565&#xff1a;\u53cc\u8def\u5f84\u5206\u6d41\u8bbe\u8ba1<\/p>\n<p>\u8be5\u8282\u70b9\u6700\u6838\u5fc3\u7684\u90e8\u5206\u5728\u4e8e\u5176\u5305\u542b\u7684 2 \u7ec4\u6620\u5c04\u6761\u76ee (Mapping Count: 02)&#xff0c;\u5b83\u4eec\u6839\u636e\u8bbe\u5907\u7684 RID (Requester ID) \u8fdb\u884c\u4e86\u7cbe\u7ec6\u7684\u5206\u6d41&#xff1a;<\/p>\n<p>\u8def\u5f84 A&#xff1a;\u5b89\u5168\u7ffb\u8bd1\u8def\u5f84&#xff08;\u8d70\u5411 SMMU&#xff09;<\/p>\n<ul>\n<li>\n<p>RID \u8303\u56f4&#xff1a;0x100 \u5230 0x3FF&#xff08;\u7531 Input base 0x100 \u548c ID Count 0x2FF \u5b9a\u4e49&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u76ee\u7684\u5730 (Output Reference)&#xff1a;\u6307\u5411\u504f\u79fb\u91cf 0x518\u3002<\/p>\n<\/li>\n<li>\n<p>\u903b\u8f91\u542b\u4e49&#xff1a;\u6b64\u8303\u56f4\u5185\u7684\u8bbe\u5907&#xff08;\u901a\u5e38\u4e3a\u6807\u51c6\u5916\u8bbe&#xff09;\u88ab\u8def\u7531\u81f3 SMMUv3\u3002\u5728\u5230\u8fbe\u4e2d\u65ad\u63a7\u5236\u5668\u4e4b\u524d&#xff0c;\u5fc5\u987b\u7ecf\u8fc7\u5730\u5740\u7ffb\u8bd1\u548c\u5185\u5b58\u9694\u79bb&#xff0c;\u786e\u4fdd\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u8def\u5f84 B&#xff1a;\u9ad8\u6027\u80fd\u76f4\u8fde\u8def\u5f84&#xff08;\u8d70\u5411 ITS&#xff09;<\/p>\n<ul>\n<li>\n<p>RID \u8303\u56f4&#xff1a;0x400 \u5230 0x8FF&#xff08;\u7531 Input base 0x400 \u548c ID Count 0x4FF \u5b9a\u4e49&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u76ee\u7684\u5730 (Output Reference)&#xff1a;\u6307\u5411\u504f\u79fb\u91cf 0x078\u3002<\/p>\n<\/li>\n<li>\n<p>\u903b\u8f91\u542b\u4e49&#xff1a;\u6b64\u8303\u56f4\u5185\u7684\u8bbe\u5907\u8df3\u8fc7\u4e86 SMMU&#xff0c;\u76f4\u63a5\u8fde\u63a5\u5230 ITS 3 \u4e2d\u65ad\u63a7\u5236\u5668\u3002\u8fd9\u79cd\u201c\u76f4\u8fde\u201d\u8bbe\u8ba1\u6d88\u9664\u4e86\u4e2d\u95f4\u8f6c\u6362\u73af\u8282&#xff0c;\u4e3a\u7279\u5b9a\u786c\u4ef6\u63d0\u4f9b\u4e86\u6781\u4f4e\u7684\u4e2d\u65ad\u54cd\u5e94\u5ef6\u8fdf\u3002<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3 style=\"--darkreader-inline-bgcolor:transparent;background-color:transparent\">3. \u6df1\u5ea6\u5206\u5c42\u6620\u5c04&#xff1a;S5000C \u7684\u53cc\u91cd\u8def\u7531\u903b\u8f91<\/h3>\n<p>S5000C \u7684\u8bbe\u8ba1\u5141\u8bb8\u540c\u4e00 PCIe \u63a7\u5236\u5668\u4e0b\u7684\u8bbe\u5907\u6839\u636e\u5176 ID \u8303\u56f4\u8d70\u4e0d\u540c\u7684\u201c\u7269\u7406\u8def\u5f84\u201d\u3002<\/p>\n<h4>\u8def\u5f84\u4e00&#xff1a;\u57fa\u4e8e SMMU \u7684\u865a\u62df\u5316\u6620\u5c04\u94fe\u8def<\/h4>\n<p>\u5f53\u8bbe\u5907\u7684 RID \u843d\u5728 0x100 &#8211; 0x3FF \u8303\u56f4\u5185\u65f6&#xff0c;\u7cfb\u7edf\u91c7\u7528\u7ea7\u8054\u6620\u5c04&#xff1a;<\/p>\n<li>\n<p>\u7b2c\u4e00\u7ea7&#xff1a;\u63a7\u5236\u5668\u5230 SMMU<\/p>\n<p>PCI Root Complex \u5339\u914d\u5230\u8be5 ID \u533a\u95f4&#xff0c;\u5e76\u5c06\u5176\u5b9a\u5411\u81f3 IORT \u8868\u504f\u79fb\u91cf 0x518 \u5904\u7684 SMMUv3 \u8282\u70b9\u3002<\/p>\n<\/li>\n<li>\n<p>\u7b2c\u4e8c\u7ea7&#xff1a;SMMU \u5185\u90e8\u5904\u7406<\/p>\n<p>SMMU \u8282\u70b9&#xff08;Offset 0x518&#xff09;\u63a5\u6536\u5230\u6d41\u540e&#xff0c;\u6839\u636e\u5176\u81ea\u8eab\u7684\u6620\u5c04\u89c4\u5219&#xff0c;\u5c06\u7ecf\u8fc7\u5730\u5740\u8f6c\u6362\u7684\u6d41&#xff08;StreamID&#xff09;\u7ee7\u7eed\u8f6c\u53d1\u81f3\u504f\u79fb\u91cf 0x060 \u5904\u7684\u8282\u70b9\u3002<\/p>\n<\/li>\n<li>\n<p>\u7b2c\u4e09\u7ea7&#xff1a;\u5230\u8fbe ITS (ID 2)<\/p>\n<p>\u504f\u79fb 0x060 \u5904\u662f\u4e00\u4e2a ITS Group \u8282\u70b9\u3002\u6570\u636e\u8868\u660e&#xff0c;\u5176 Identifiers \u4e3a 0x00000002\u3002\u8fd9\u610f\u5473\u7740\u8be5\u8303\u56f4\u5185\u7684\u8bbe\u5907\u6700\u7ec8\u7531 ITS 2 \u5904\u7406\u4e2d\u65ad\u3002<\/p>\n<\/li>\n<h4>\u8def\u5f84\u4e8c&#xff1a;\u8df3\u8fc7 SMMU \u7684\u9ad8\u6027\u80fd\u76f4\u8fde\u94fe\u8def<\/h4>\n<p>\u9488\u5bf9 RID \u5728 0x400 &#8211; 0x8FF \u8303\u56f4\u5185\u7684\u8bbe\u5907&#xff0c;S5000C \u5c55\u793a\u4e86\u4e00\u79cd\u6781\u7b80\u7684\u786c\u4ef6\u62d3\u6251&#xff1a;<\/p>\n<li>\n<p>\u76f4\u8fde\u8def\u7531<\/p>\n<p>PCI Root Complex \u76f4\u63a5\u5c06\u8be5\u8303\u56f4\u5185\u7684 RID \u6620\u5c04\u81f3\u504f\u79fb\u91cf 0x078 \u5904\u7684\u8282\u70b9\u3002<\/p>\n<\/li>\n<li>\n<p>\u96f6\u635f\u8017\u8f6c\u53d1<\/p>\n<p>\u7531\u4e8e\u8be5\u8def\u5f84\u4e0d\u7ecf\u8fc7 SMMU \u8282\u70b9&#xff0c;\u6d88\u9664\u4e86\u5730\u5740\u8f6c\u6362\u5e26\u6765\u7684\u5fae\u5c0f\u5ef6\u8fdf&#xff0c;\u4e5f\u65e0\u9700\u5728 SMMU \u4e2d\u914d\u7f6e\u989d\u5916\u7684\u6d41\u8868&#xff08;Stream Table&#xff09;\u3002\u8fd9\u79cd\u8bbe\u8ba1\u901a\u5e38\u7528\u4e8e\u5bf9\u5ef6\u8fdf\u6781\u5ea6\u654f\u611f\u6216\u56fa\u4ef6\u7ea7\u7ba1\u7406\u7684\u4e13\u7528\u786c\u4ef6\u3002<\/p>\n<\/li>\n<li>\n<p>\u5230\u8fbe\u7ec8\u70b9 (ITS 3)<\/p>\n<p>\u504f\u79fb 0x078 \u5904\u662f\u53e6\u4e00\u4e2a ITS Group \u8282\u70b9\u3002\u5176 Identifiers \u4e3a 0x00000003\u3002\u8be5\u8def\u5f84\u7684\u8bf7\u6c42\u6700\u7ec8\u7531 ITS 3 \u8d1f\u8d23\u3002<\/p>\n<\/li>\n<hr \/>\n<h3 style=\"--darkreader-inline-bgcolor:transparent;background-color:transparent\">4. \u6838\u5fc3\u539f\u7406&#xff1a;ID \u8f6c\u6362\u4e0e\u533a\u95f4\u9694\u79bb<\/h3>\n<p>S5000C \u7684\u6620\u5c04\u673a\u5236\u4f53\u73b0\u4e86\u4e09\u4e2a\u5173\u952e\u7684\u786c\u4ef6\u8bbe\u8ba1\u539f\u7406&#xff1a;<\/p>\n<h4>A. \u533a\u95f4\u5206\u6cbb\u539f\u5219<\/h4>\n<p>\u901a\u8fc7 Input Base \u548c ID Count \u5b9a\u4e49\u7684 ID \u533a\u95f4&#xff0c;\u786c\u4ef6\u5b9e\u73b0\u4e86\u7269\u7406\u5c42\u9762\u7684\u201c\u5f3a\u9694\u79bb\u201d\u3002\u4f8b\u5982&#xff0c;\u5373\u4fbf\u4e24\u4e2a\u8bbe\u5907\u63d2\u5728\u540c\u4e00\u4e2a PCIe \u63a7\u5236\u5668\u4e0b&#xff0c;\u53ea\u8981\u5b83\u4eec\u7684 RID \u4e0d\u540c&#xff0c;\u5b83\u4eec\u5728\u786c\u4ef6\u62d3\u6251\u4e0a\u7684\u201c\u4e0a\u7ea7\u201d\u53ef\u80fd\u5b8c\u5168\u4e0d\u540c&#xff08;\u4e00\u4e2a\u662f SMMU&#xff0c;\u4e00\u4e2a\u662f ITS&#xff09;\u3002<\/p>\n<h4>B. \u7ea7\u8054\u5bfb\u5740&#xff08;Output Reference&#xff09;<\/h4>\n<p>IORT \u4f7f\u7528 Output Reference&#xff08;\u504f\u79fb\u91cf\u53c2\u8003&#xff09;\u6765\u94fe\u63a5\u4e0d\u540c\u7684\u786c\u4ef6\u5355\u5143\u3002\u8fd9\u79cd\u7c7b\u4f3c\u4e8e\u201c\u94fe\u8868\u201d\u7684\u7ed3\u6784\u5141\u8bb8\u786c\u4ef6\u5de5\u7a0b\u5e08\u7075\u6d3b\u5730\u589e\u51cf\u4e2d\u95f4\u73af\u8282\u3002<\/p>\n<ul>\n<li>\n<p>\u6709\u7ea7\u8054&#xff1a;PCI -&gt; SMMU -&gt; ITS&#xff08;\u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u5730\u5740\u7a7a\u95f4\u63a7\u5236&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u65e0\u7ea7\u8054&#xff1a;PCI -&gt; ITS&#xff08;\u63d0\u4f9b\u4e86\u6700\u77ed\u7684\u54cd\u5e94\u8def\u5f84&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>C. \u8eab\u4efd\u900f\u4f20&#xff08;Identity Mapping&#xff09;<\/h4>\n<p>\u5728 S5000C \u7684\u6570\u636e\u4e2d&#xff0c;\u6211\u4eec\u89c2\u5bdf\u5230 Input Base \u548c Output Base \u5f80\u5f80\u76f8\u7b49&#xff08;\u5982\u90fd\u662f 0x100 \u6216 0x400&#xff09;\u3002\u8fd9\u88ab\u79f0\u4e3a\u201c\u7b49\u503c\u6620\u5c04\u201d&#xff0c;\u610f\u5473\u7740\u786c\u4ef6\u5728\u8f6c\u53d1 ID \u65f6\u6ca1\u6709\u4fee\u6539\u5176\u539f\u59cb\u6570\u503c\u3002\u8fd9\u7b80\u5316\u4e86\u8f6f\u4ef6\u8c03\u8bd5&#xff0c;\u5e76\u786e\u4fdd\u4e86\u8bbe\u5907\u5728 ITS \u7aef\u7684 DeviceID \u4e0e\u603b\u7ebf\u7aef\u7684 RID \u4fdd\u6301\u903b\u8f91\u4e00\u81f4\u3002<\/p>\n<hr \/>\n<h3 style=\"--darkreader-inline-bgcolor:transparent;background-color:transparent\">5. \u603b\u7ed3&#xff1a;S5000C \u786c\u4ef6\u6620\u5c04\u94fe\u6761\u5bf9\u6bd4<\/h3>\n<table>\n<tr>\n<td>\u8def\u5f84\u5c5e\u6027<\/td>\n<td>\u8d77\u59cb\u8282\u70b9<\/td>\n<td>\u5339\u914d ID \u8303\u56f4<\/td>\n<td>\u5173\u952e\u8def\u5f84\u8282\u70b9<\/td>\n<td>\u6700\u7ec8\u76ee\u6807<\/td>\n<td>\u786c\u4ef6\u8bed\u4e49<\/td>\n<\/tr>\n<tbody>\n<tr>\n<td>\u6807\u51c6\u8def\u5f84<\/td>\n<td>PCI RC<\/td>\n<td>0x100 &#8211; 0x3FF<\/td>\n<td>SMMUv3 (Offset 0x518)<\/td>\n<td>ITS 2 (Offset 0x060)<\/td>\n<td>\u9694\u79bb\u3001\u865a\u62df\u5316<\/td>\n<\/tr>\n<tr>\n<td>\u76f4\u8fde\u8def\u5f84<\/td>\n<td>PCI RC<\/td>\n<td>0x400 &#8211; 0x8FF<\/td>\n<td>\u65e0 (Direct)<\/td>\n<td>ITS 3 (Offset 0x078)<\/td>\n<td>\u9ad8\u6548\u3001\u76f4\u901a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u79cd\u7cbe\u5999\u7684 ACPI IORT \u914d\u7f6e&#xff0c;\u4f7f\u5f97 S5000C 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