| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| /* |
| * Copyright IBM Corp. 2022 |
| * Author(s): Steffen Eiden <seiden@linux.ibm.com> |
| */ |
| #ifndef __S390_ASM_UVDEVICE_H |
| #define __S390_ASM_UVDEVICE_H |
| |
| #include <linux/types.h> |
| |
| struct uvio_ioctl_cb { |
| __u32 flags; |
| __u16 uv_rc; /* UV header rc value */ |
| __u16 uv_rrc; /* UV header rrc value */ |
| __u64 argument_addr; /* Userspace address of uvio argument */ |
| __u32 argument_len; |
| __u8 reserved14[0x40 - 0x14]; /* must be zero */ |
| }; |
| |
| #define UVIO_ATT_USER_DATA_LEN 0x100 |
| #define UVIO_ATT_UID_LEN 0x10 |
| struct uvio_attest { |
| __u64 arcb_addr; /* 0x0000 */ |
| __u64 meas_addr; /* 0x0008 */ |
| __u64 add_data_addr; /* 0x0010 */ |
| __u8 user_data[UVIO_ATT_USER_DATA_LEN]; /* 0x0018 */ |
| __u8 config_uid[UVIO_ATT_UID_LEN]; /* 0x0118 */ |
| __u32 arcb_len; /* 0x0128 */ |
| __u32 meas_len; /* 0x012c */ |
| __u32 add_data_len; /* 0x0130 */ |
| __u16 user_data_len; /* 0x0134 */ |
| __u16 reserved136; /* 0x0136 */ |
| }; |
| |
| /* |
| * The following max values define an upper length for the IOCTL in/out buffers. |
| * However, they do not represent the maximum the Ultravisor allows which is |
| * often way smaller. By allowing larger buffer sizes we hopefully do not need |
| * to update the code with every machine update. It is therefore possible for |
| * userspace to request more memory than actually used by kernel/UV. |
| */ |
| #define UVIO_ATT_ARCB_MAX_LEN 0x100000 |
| #define UVIO_ATT_MEASUREMENT_MAX_LEN 0x8000 |
| #define UVIO_ATT_ADDITIONAL_MAX_LEN 0x8000 |
| |
| #define UVIO_DEVICE_NAME "uv" |
| #define UVIO_TYPE_UVC 'u' |
| |
| #define UVIO_IOCTL_ATT _IOWR(UVIO_TYPE_UVC, 0x01, struct uvio_ioctl_cb) |
| |
| #endif /* __S390_ASM_UVDEVICE_H */ |
