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1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2
3 #ifndef QEMU_I386_TDX_QUOTE_GENERATOR_H
4 #define QEMU_I386_TDX_QUOTE_GENERATOR_H
5
6 #include "qom/object_interfaces.h"
7 #include "io/channel-socket.h"
8 #include "exec/hwaddr.h"
9
10 #define TDX_GET_QUOTE_STRUCTURE_VERSION 1ULL
11
12 #define TDX_VP_GET_QUOTE_SUCCESS 0ULL
13 #define TDX_VP_GET_QUOTE_IN_FLIGHT (-1ULL)
14 #define TDX_VP_GET_QUOTE_ERROR 0x8000000000000000ULL
15 #define TDX_VP_GET_QUOTE_QGS_UNAVAILABLE 0x8000000000000001ULL
16
17 /* Limit to avoid resource starvation. */
18 #define TDX_GET_QUOTE_MAX_BUF_LEN (128 * 1024)
19 #define TDX_MAX_GET_QUOTE_REQUEST 16
20
21 #define TDX_GET_QUOTE_HDR_SIZE 24
22
23 /* Format of pages shared with guest. */
24 struct tdx_get_quote_header {
25 /* Format version: must be 1 in little endian. */
26 uint64_t structure_version;
27
28 /*
29 * GetQuote status code in little endian:
30 * Guest must set error_code to 0 to avoid information leak.
31 * Qemu sets this before interrupting guest.
32 */
33 uint64_t error_code;
34
35 /*
36 * in-message size in little endian: The message will follow this header.
37 * The in-message will be send to QGS.
38 */
39 uint32_t in_len;
40
41 /*
42 * out-message size in little endian:
43 * On request, out_len must be zero to avoid information leak.
44 * On return, message size from QGS. Qemu overwrites this field.
45 * The message will follows this header. The in-message is overwritten.
46 */
47 uint32_t out_len;
48
49 /*
50 * Message buffer follows.
51 * Guest sets message that will be send to QGS. If out_len > in_len, guest
52 * should zero remaining buffer to avoid information leak.
53 * Qemu overwrites this buffer with a message returned from QGS.
54 */
55 };
56
57 typedef struct TdxGenerateQuoteTask {
58 hwaddr buf_gpa;
59 hwaddr payload_gpa;
60 uint64_t payload_len;
61
62 char *send_data;
63 uint64_t send_data_size;
64 uint64_t send_data_sent;
65
66 char *receive_buf;
67 uint64_t receive_buf_received;
68
69 uint64_t status_code;
70 struct tdx_get_quote_header hdr;
71
72 QIOChannelSocket *sioc;
73 guint watch;
74 QEMUTimer timer;
75
76 void (*completion)(struct TdxGenerateQuoteTask *task);
77 void *opaque;
78 } TdxGenerateQuoteTask;
79
80 void tdx_generate_quote(TdxGenerateQuoteTask *task, SocketAddress *qg_sock_addr);
81
82 #endif /* QEMU_I386_TDX_QUOTE_GENERATOR_H */