Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/drivers/crypto/ccp/sev-dev-tio.h
38184 views
1
/* SPDX-License-Identifier: GPL-2.0-only */

2
#ifndef __PSP_SEV_TIO_H__

3
#define __PSP_SEV_TIO_H__

4


5
#include <linux/pci-tsm.h>

6
#include <linux/pci-ide.h>

7
#include <linux/tsm.h>

8
#include <uapi/linux/psp-sev.h>

9


10
struct sla_addr_t {

11
	union {

12
		u64 sla;

13
		struct {

14
			u64 page_type	:1,

15
			    page_size	:1,

16
			    reserved1	:10,

17
			    pfn		:40,

18
			    reserved2	:12;

19
		};

20
	};

21
} __packed;

22


23
#define SEV_TIO_MAX_COMMAND_LENGTH	128

24


25
/* SPDM control structure for DOE */

26
struct tsm_spdm {

27
	unsigned long req_len;

28
	void *req;

29
	unsigned long rsp_len;

30
	void *rsp;

31
};

32


33
/* Describes TIO device */

34
struct tsm_dsm_tio {

35
	u8 cert_slot;

36
	struct sla_addr_t dev_ctx;

37
	struct sla_addr_t req;

38
	struct sla_addr_t resp;

39
	struct sla_addr_t scratch;

40
	struct sla_addr_t output;

41
	size_t output_len;

42
	size_t scratch_len;

43
	struct tsm_spdm spdm;

44
	struct sla_buffer_hdr *reqbuf; /* vmap'ed @req for DOE */

45
	struct sla_buffer_hdr *respbuf; /* vmap'ed @resp for DOE */

46


47
	int cmd;

48
	int psp_ret;

49
	u8 cmd_data[SEV_TIO_MAX_COMMAND_LENGTH];

50
	void *data_pg; /* Data page for DEV_STATUS/TDI_STATUS/TDI_INFO/ASID_FENCE */

51


52
#define TIO_IDE_MAX_TC	8

53
	struct pci_ide *ide[TIO_IDE_MAX_TC];

54
};

55


56
/* Describes TSM structure for PF0 pointed by pci_dev->tsm */

57
struct tio_dsm {

58
	struct pci_tsm_pf0 tsm;

59
	struct tsm_dsm_tio data;

60
	struct sev_device *sev;

61
};

62


63
/* Data object IDs */

64
#define SPDM_DOBJ_ID_NONE		0

65
#define SPDM_DOBJ_ID_REQ		1

66
#define SPDM_DOBJ_ID_RESP		2

67


68
struct spdm_dobj_hdr {

69
	u32 id;     /* Data object type identifier */

70
	u32 length; /* Length of the data object, INCLUDING THIS HEADER */

71
	struct { /* Version of the data object structure */

72
		u8 minor;

73
		u8 major;

74
	} version;

75
} __packed;

76


77
/**

78
 * struct sev_tio_status - TIO_STATUS command's info_paddr buffer

79
 *

80
 * @length: Length of this structure in bytes

81
 * @tio_en: Indicates that SNP_INIT_EX initialized the RMP for SEV-TIO

82
 * @tio_init_done: Indicates TIO_INIT has been invoked

83
 * @spdm_req_size_min: Minimum SPDM request buffer size in bytes

84
 * @spdm_req_size_max: Maximum SPDM request buffer size in bytes

85
 * @spdm_scratch_size_min: Minimum SPDM scratch buffer size in bytes

86
 * @spdm_scratch_size_max: Maximum SPDM scratch buffer size in bytes

87
 * @spdm_out_size_min: Minimum SPDM output buffer size in bytes

88
 * @spdm_out_size_max: Maximum for the SPDM output buffer size in bytes

89
 * @spdm_rsp_size_min: Minimum SPDM response buffer size in bytes

90
 * @spdm_rsp_size_max: Maximum SPDM response buffer size in bytes

91
 * @devctx_size: Size of a device context buffer in bytes

92
 * @tdictx_size: Size of a TDI context buffer in bytes

93
 * @tio_crypto_alg: TIO crypto algorithms supported

94
 */

95
struct sev_tio_status {

96
	u32 length;

97
	u32 tio_en	  :1,

98
	    tio_init_done :1,

99
	    reserved	  :30;

100
	u32 spdm_req_size_min;

101
	u32 spdm_req_size_max;

102
	u32 spdm_scratch_size_min;

103
	u32 spdm_scratch_size_max;

104
	u32 spdm_out_size_min;

105
	u32 spdm_out_size_max;

106
	u32 spdm_rsp_size_min;

107
	u32 spdm_rsp_size_max;

108
	u32 devctx_size;

109
	u32 tdictx_size;

110
	u32 tio_crypto_alg;

111
	u8 reserved2[12];

112
} __packed;

113


114
int sev_tio_init_locked(void *tio_status_page);

115
int sev_tio_continue(struct tsm_dsm_tio *dev_data);

116


117
int sev_tio_dev_create(struct tsm_dsm_tio *dev_data, u16 device_id, u16 root_port_id,

118
		       u8 segment_id);

119
int sev_tio_dev_connect(struct tsm_dsm_tio *dev_data, u8 tc_mask, u8 ids[8], u8 cert_slot);

120
int sev_tio_dev_disconnect(struct tsm_dsm_tio *dev_data, bool force);

121
int sev_tio_dev_reclaim(struct tsm_dsm_tio *dev_data);

122


123
#endif	/* __PSP_SEV_TIO_H__ */

124


125