457 lines
11 KiB
C
457 lines
11 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/*
|
||
|
|
* Ultravisor Interfaces
|
||
|
|
*
|
||
|
|
* Copyright IBM Corp. 2019, 2022
|
||
|
|
*
|
||
|
|
* Author(s):
|
||
|
|
* Vasily Gorbik <gor@linux.ibm.com>
|
||
|
|
* Janosch Frank <frankja@linux.ibm.com>
|
||
|
|
*/
|
||
|
|
#ifndef _ASM_S390_UV_H
|
||
|
|
#define _ASM_S390_UV_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#include <linux/bug.h>
|
||
|
|
#include <linux/sched.h>
|
||
|
|
#include <asm/page.h>
|
||
|
|
#include <asm/gmap.h>
|
||
|
|
|
||
|
|
#define UVC_CC_OK 0
|
||
|
|
#define UVC_CC_ERROR 1
|
||
|
|
#define UVC_CC_BUSY 2
|
||
|
|
#define UVC_CC_PARTIAL 3
|
||
|
|
|
||
|
|
#define UVC_RC_EXECUTED 0x0001
|
||
|
|
#define UVC_RC_INV_CMD 0x0002
|
||
|
|
#define UVC_RC_INV_STATE 0x0003
|
||
|
|
#define UVC_RC_INV_LEN 0x0005
|
||
|
|
#define UVC_RC_NO_RESUME 0x0007
|
||
|
|
#define UVC_RC_NEED_DESTROY 0x8000
|
||
|
|
|
||
|
|
#define UVC_CMD_QUI 0x0001
|
||
|
|
#define UVC_CMD_INIT_UV 0x000f
|
||
|
|
#define UVC_CMD_CREATE_SEC_CONF 0x0100
|
||
|
|
#define UVC_CMD_DESTROY_SEC_CONF 0x0101
|
||
|
|
#define UVC_CMD_CREATE_SEC_CPU 0x0120
|
||
|
|
#define UVC_CMD_DESTROY_SEC_CPU 0x0121
|
||
|
|
#define UVC_CMD_CONV_TO_SEC_STOR 0x0200
|
||
|
|
#define UVC_CMD_CONV_FROM_SEC_STOR 0x0201
|
||
|
|
#define UVC_CMD_DESTR_SEC_STOR 0x0202
|
||
|
|
#define UVC_CMD_SET_SEC_CONF_PARAMS 0x0300
|
||
|
|
#define UVC_CMD_UNPACK_IMG 0x0301
|
||
|
|
#define UVC_CMD_VERIFY_IMG 0x0302
|
||
|
|
#define UVC_CMD_CPU_RESET 0x0310
|
||
|
|
#define UVC_CMD_CPU_RESET_INITIAL 0x0311
|
||
|
|
#define UVC_CMD_PREPARE_RESET 0x0320
|
||
|
|
#define UVC_CMD_CPU_RESET_CLEAR 0x0321
|
||
|
|
#define UVC_CMD_CPU_SET_STATE 0x0330
|
||
|
|
#define UVC_CMD_SET_UNSHARE_ALL 0x0340
|
||
|
|
#define UVC_CMD_PIN_PAGE_SHARED 0x0341
|
||
|
|
#define UVC_CMD_UNPIN_PAGE_SHARED 0x0342
|
||
|
|
#define UVC_CMD_DUMP_INIT 0x0400
|
||
|
|
#define UVC_CMD_DUMP_CONF_STOR_STATE 0x0401
|
||
|
|
#define UVC_CMD_DUMP_CPU 0x0402
|
||
|
|
#define UVC_CMD_DUMP_COMPLETE 0x0403
|
||
|
|
#define UVC_CMD_SET_SHARED_ACCESS 0x1000
|
||
|
|
#define UVC_CMD_REMOVE_SHARED_ACCESS 0x1001
|
||
|
|
#define UVC_CMD_RETR_ATTEST 0x1020
|
||
|
|
|
||
|
|
/* Bits in installed uv calls */
|
||
|
|
enum uv_cmds_inst {
|
||
|
|
BIT_UVC_CMD_QUI = 0,
|
||
|
|
BIT_UVC_CMD_INIT_UV = 1,
|
||
|
|
BIT_UVC_CMD_CREATE_SEC_CONF = 2,
|
||
|
|
BIT_UVC_CMD_DESTROY_SEC_CONF = 3,
|
||
|
|
BIT_UVC_CMD_CREATE_SEC_CPU = 4,
|
||
|
|
BIT_UVC_CMD_DESTROY_SEC_CPU = 5,
|
||
|
|
BIT_UVC_CMD_CONV_TO_SEC_STOR = 6,
|
||
|
|
BIT_UVC_CMD_CONV_FROM_SEC_STOR = 7,
|
||
|
|
BIT_UVC_CMD_SET_SHARED_ACCESS = 8,
|
||
|
|
BIT_UVC_CMD_REMOVE_SHARED_ACCESS = 9,
|
||
|
|
BIT_UVC_CMD_SET_SEC_PARMS = 11,
|
||
|
|
BIT_UVC_CMD_UNPACK_IMG = 13,
|
||
|
|
BIT_UVC_CMD_VERIFY_IMG = 14,
|
||
|
|
BIT_UVC_CMD_CPU_RESET = 15,
|
||
|
|
BIT_UVC_CMD_CPU_RESET_INITIAL = 16,
|
||
|
|
BIT_UVC_CMD_CPU_SET_STATE = 17,
|
||
|
|
BIT_UVC_CMD_PREPARE_RESET = 18,
|
||
|
|
BIT_UVC_CMD_CPU_PERFORM_CLEAR_RESET = 19,
|
||
|
|
BIT_UVC_CMD_UNSHARE_ALL = 20,
|
||
|
|
BIT_UVC_CMD_PIN_PAGE_SHARED = 21,
|
||
|
|
BIT_UVC_CMD_UNPIN_PAGE_SHARED = 22,
|
||
|
|
BIT_UVC_CMD_DUMP_INIT = 24,
|
||
|
|
BIT_UVC_CMD_DUMP_CONFIG_STOR_STATE = 25,
|
||
|
|
BIT_UVC_CMD_DUMP_CPU = 26,
|
||
|
|
BIT_UVC_CMD_DUMP_COMPLETE = 27,
|
||
|
|
BIT_UVC_CMD_RETR_ATTEST = 28,
|
||
|
|
};
|
||
|
|
|
||
|
|
enum uv_feat_ind {
|
||
|
|
BIT_UV_FEAT_MISC = 0,
|
||
|
|
BIT_UV_FEAT_AIV = 1,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct uv_cb_header {
|
||
|
|
u16 len;
|
||
|
|
u16 cmd; /* Command Code */
|
||
|
|
u16 rc; /* Response Code */
|
||
|
|
u16 rrc; /* Return Reason Code */
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
/* Query Ultravisor Information */
|
||
|
|
struct uv_cb_qui {
|
||
|
|
struct uv_cb_header header; /* 0x0000 */
|
||
|
|
u64 reserved08; /* 0x0008 */
|
||
|
|
u64 inst_calls_list[4]; /* 0x0010 */
|
||
|
|
u64 reserved30[2]; /* 0x0030 */
|
||
|
|
u64 uv_base_stor_len; /* 0x0040 */
|
||
|
|
u64 reserved48; /* 0x0048 */
|
||
|
|
u64 conf_base_phys_stor_len; /* 0x0050 */
|
||
|
|
u64 conf_base_virt_stor_len; /* 0x0058 */
|
||
|
|
u64 conf_virt_var_stor_len; /* 0x0060 */
|
||
|
|
u64 cpu_stor_len; /* 0x0068 */
|
||
|
|
u32 reserved70[3]; /* 0x0070 */
|
||
|
|
u32 max_num_sec_conf; /* 0x007c */
|
||
|
|
u64 max_guest_stor_addr; /* 0x0080 */
|
||
|
|
u8 reserved88[158 - 136]; /* 0x0088 */
|
||
|
|
u16 max_guest_cpu_id; /* 0x009e */
|
||
|
|
u64 uv_feature_indications; /* 0x00a0 */
|
||
|
|
u64 reserveda8; /* 0x00a8 */
|
||
|
|
u64 supp_se_hdr_versions; /* 0x00b0 */
|
||
|
|
u64 supp_se_hdr_pcf; /* 0x00b8 */
|
||
|
|
u64 reservedc0; /* 0x00c0 */
|
||
|
|
u64 conf_dump_storage_state_len; /* 0x00c8 */
|
||
|
|
u64 conf_dump_finalize_len; /* 0x00d0 */
|
||
|
|
u64 reservedd8; /* 0x00d8 */
|
||
|
|
u64 supp_att_req_hdr_ver; /* 0x00e0 */
|
||
|
|
u64 supp_att_pflags; /* 0x00e8 */
|
||
|
|
u8 reservedf0[256 - 240]; /* 0x00f0 */
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
/* Initialize Ultravisor */
|
||
|
|
struct uv_cb_init {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 stor_origin;
|
||
|
|
u64 stor_len;
|
||
|
|
u64 reserved28[4];
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
/* Create Guest Configuration */
|
||
|
|
struct uv_cb_cgc {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 guest_handle;
|
||
|
|
u64 conf_base_stor_origin;
|
||
|
|
u64 conf_virt_stor_origin;
|
||
|
|
u64 reserved30;
|
||
|
|
u64 guest_stor_origin;
|
||
|
|
u64 guest_stor_len;
|
||
|
|
u64 guest_sca;
|
||
|
|
u64 guest_asce;
|
||
|
|
u64 reserved58[5];
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
/* Create Secure CPU */
|
||
|
|
struct uv_cb_csc {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 cpu_handle;
|
||
|
|
u64 guest_handle;
|
||
|
|
u64 stor_origin;
|
||
|
|
u8 reserved30[6];
|
||
|
|
u16 num;
|
||
|
|
u64 state_origin;
|
||
|
|
u64 reserved40[4];
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
/* Convert to Secure */
|
||
|
|
struct uv_cb_cts {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 guest_handle;
|
||
|
|
u64 gaddr;
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
/* Convert from Secure / Pin Page Shared */
|
||
|
|
struct uv_cb_cfs {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 paddr;
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
/* Set Secure Config Parameter */
|
||
|
|
struct uv_cb_ssc {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 guest_handle;
|
||
|
|
u64 sec_header_origin;
|
||
|
|
u32 sec_header_len;
|
||
|
|
u32 reserved2c;
|
||
|
|
u64 reserved30[4];
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
/* Unpack */
|
||
|
|
struct uv_cb_unp {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 guest_handle;
|
||
|
|
u64 gaddr;
|
||
|
|
u64 tweak[2];
|
||
|
|
u64 reserved38[3];
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
#define PV_CPU_STATE_OPR 1
|
||
|
|
#define PV_CPU_STATE_STP 2
|
||
|
|
#define PV_CPU_STATE_CHKSTP 3
|
||
|
|
#define PV_CPU_STATE_OPR_LOAD 5
|
||
|
|
|
||
|
|
struct uv_cb_cpu_set_state {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 cpu_handle;
|
||
|
|
u8 reserved20[7];
|
||
|
|
u8 state;
|
||
|
|
u64 reserved28[5];
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* A common UV call struct for calls that take no payload
|
||
|
|
* Examples:
|
||
|
|
* Destroy cpu/config
|
||
|
|
* Verify
|
||
|
|
*/
|
||
|
|
struct uv_cb_nodata {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 handle;
|
||
|
|
u64 reserved20[4];
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
/* Set Shared Access */
|
||
|
|
struct uv_cb_share {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[3];
|
||
|
|
u64 paddr;
|
||
|
|
u64 reserved28;
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
/* Retrieve Attestation Measurement */
|
||
|
|
struct uv_cb_attest {
|
||
|
|
struct uv_cb_header header; /* 0x0000 */
|
||
|
|
u64 reserved08[2]; /* 0x0008 */
|
||
|
|
u64 arcb_addr; /* 0x0018 */
|
||
|
|
u64 cont_token; /* 0x0020 */
|
||
|
|
u8 reserved28[6]; /* 0x0028 */
|
||
|
|
u16 user_data_len; /* 0x002e */
|
||
|
|
u8 user_data[256]; /* 0x0030 */
|
||
|
|
u32 reserved130[3]; /* 0x0130 */
|
||
|
|
u32 meas_len; /* 0x013c */
|
||
|
|
u64 meas_addr; /* 0x0140 */
|
||
|
|
u8 config_uid[16]; /* 0x0148 */
|
||
|
|
u32 reserved158; /* 0x0158 */
|
||
|
|
u32 add_data_len; /* 0x015c */
|
||
|
|
u64 add_data_addr; /* 0x0160 */
|
||
|
|
u64 reserved168[4]; /* 0x0168 */
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
struct uv_cb_dump_cpu {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 cpu_handle;
|
||
|
|
u64 dump_area_origin;
|
||
|
|
u64 reserved28[5];
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
struct uv_cb_dump_stor_state {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 config_handle;
|
||
|
|
u64 dump_area_origin;
|
||
|
|
u64 gaddr;
|
||
|
|
u64 reserved28[4];
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
struct uv_cb_dump_complete {
|
||
|
|
struct uv_cb_header header;
|
||
|
|
u64 reserved08[2];
|
||
|
|
u64 config_handle;
|
||
|
|
u64 dump_area_origin;
|
||
|
|
u64 reserved30[5];
|
||
|
|
} __packed __aligned(8);
|
||
|
|
|
||
|
|
static inline int __uv_call(unsigned long r1, unsigned long r2)
|
||
|
|
{
|
||
|
|
int cc;
|
||
|
|
|
||
|
|
asm volatile(
|
||
|
|
" .insn rrf,0xB9A40000,%[r1],%[r2],0,0\n"
|
||
|
|
" ipm %[cc]\n"
|
||
|
|
" srl %[cc],28\n"
|
||
|
|
: [cc] "=d" (cc)
|
||
|
|
: [r1] "a" (r1), [r2] "a" (r2)
|
||
|
|
: "memory", "cc");
|
||
|
|
return cc;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int uv_call(unsigned long r1, unsigned long r2)
|
||
|
|
{
|
||
|
|
int cc;
|
||
|
|
|
||
|
|
do {
|
||
|
|
cc = __uv_call(r1, r2);
|
||
|
|
} while (cc > 1);
|
||
|
|
return cc;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Low level uv_call that avoids stalls for long running busy conditions */
|
||
|
|
static inline int uv_call_sched(unsigned long r1, unsigned long r2)
|
||
|
|
{
|
||
|
|
int cc;
|
||
|
|
|
||
|
|
do {
|
||
|
|
cc = __uv_call(r1, r2);
|
||
|
|
cond_resched();
|
||
|
|
} while (cc > 1);
|
||
|
|
return cc;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* special variant of uv_call that only transports the cpu or guest
|
||
|
|
* handle and the command, like destroy or verify.
|
||
|
|
*/
|
||
|
|
static inline int uv_cmd_nodata(u64 handle, u16 cmd, u16 *rc, u16 *rrc)
|
||
|
|
{
|
||
|
|
struct uv_cb_nodata uvcb = {
|
||
|
|
.header.cmd = cmd,
|
||
|
|
.header.len = sizeof(uvcb),
|
||
|
|
.handle = handle,
|
||
|
|
};
|
||
|
|
int cc;
|
||
|
|
|
||
|
|
WARN(!handle, "No handle provided to Ultravisor call cmd %x\n", cmd);
|
||
|
|
cc = uv_call_sched(0, (u64)&uvcb);
|
||
|
|
*rc = uvcb.header.rc;
|
||
|
|
*rrc = uvcb.header.rrc;
|
||
|
|
return cc ? -EINVAL : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct uv_info {
|
||
|
|
unsigned long inst_calls_list[4];
|
||
|
|
unsigned long uv_base_stor_len;
|
||
|
|
unsigned long guest_base_stor_len;
|
||
|
|
unsigned long guest_virt_base_stor_len;
|
||
|
|
unsigned long guest_virt_var_stor_len;
|
||
|
|
unsigned long guest_cpu_stor_len;
|
||
|
|
unsigned long max_sec_stor_addr;
|
||
|
|
unsigned int max_num_sec_conf;
|
||
|
|
unsigned short max_guest_cpu_id;
|
||
|
|
unsigned long uv_feature_indications;
|
||
|
|
unsigned long supp_se_hdr_ver;
|
||
|
|
unsigned long supp_se_hdr_pcf;
|
||
|
|
unsigned long conf_dump_storage_state_len;
|
||
|
|
unsigned long conf_dump_finalize_len;
|
||
|
|
unsigned long supp_att_req_hdr_ver;
|
||
|
|
unsigned long supp_att_pflags;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern struct uv_info uv_info;
|
||
|
|
|
||
|
|
#ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST
|
||
|
|
extern int prot_virt_guest;
|
||
|
|
|
||
|
|
static inline int is_prot_virt_guest(void)
|
||
|
|
{
|
||
|
|
return prot_virt_guest;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int share(unsigned long addr, u16 cmd)
|
||
|
|
{
|
||
|
|
struct uv_cb_share uvcb = {
|
||
|
|
.header.cmd = cmd,
|
||
|
|
.header.len = sizeof(uvcb),
|
||
|
|
.paddr = addr
|
||
|
|
};
|
||
|
|
|
||
|
|
if (!is_prot_virt_guest())
|
||
|
|
return -EOPNOTSUPP;
|
||
|
|
/*
|
||
|
|
* Sharing is page wise, if we encounter addresses that are
|
||
|
|
* not page aligned, we assume something went wrong. If
|
||
|
|
* malloced structs are passed to this function, we could leak
|
||
|
|
* data to the hypervisor.
|
||
|
|
*/
|
||
|
|
BUG_ON(addr & ~PAGE_MASK);
|
||
|
|
|
||
|
|
if (!uv_call(0, (u64)&uvcb))
|
||
|
|
return 0;
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Guest 2 request to the Ultravisor to make a page shared with the
|
||
|
|
* hypervisor for IO.
|
||
|
|
*
|
||
|
|
* @addr: Real or absolute address of the page to be shared
|
||
|
|
*/
|
||
|
|
static inline int uv_set_shared(unsigned long addr)
|
||
|
|
{
|
||
|
|
return share(addr, UVC_CMD_SET_SHARED_ACCESS);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Guest 2 request to the Ultravisor to make a page unshared.
|
||
|
|
*
|
||
|
|
* @addr: Real or absolute address of the page to be unshared
|
||
|
|
*/
|
||
|
|
static inline int uv_remove_shared(unsigned long addr)
|
||
|
|
{
|
||
|
|
return share(addr, UVC_CMD_REMOVE_SHARED_ACCESS);
|
||
|
|
}
|
||
|
|
|
||
|
|
#else
|
||
|
|
#define is_prot_virt_guest() 0
|
||
|
|
static inline int uv_set_shared(unsigned long addr) { return 0; }
|
||
|
|
static inline int uv_remove_shared(unsigned long addr) { return 0; }
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if IS_ENABLED(CONFIG_KVM)
|
||
|
|
extern int prot_virt_host;
|
||
|
|
|
||
|
|
static inline int is_prot_virt_host(void)
|
||
|
|
{
|
||
|
|
return prot_virt_host;
|
||
|
|
}
|
||
|
|
|
||
|
|
int gmap_make_secure(struct gmap *gmap, unsigned long gaddr, void *uvcb);
|
||
|
|
int gmap_destroy_page(struct gmap *gmap, unsigned long gaddr);
|
||
|
|
int uv_destroy_owned_page(unsigned long paddr);
|
||
|
|
int uv_convert_from_secure(unsigned long paddr);
|
||
|
|
int uv_convert_owned_from_secure(unsigned long paddr);
|
||
|
|
int gmap_convert_to_secure(struct gmap *gmap, unsigned long gaddr);
|
||
|
|
|
||
|
|
void setup_uv(void);
|
||
|
|
#else
|
||
|
|
#define is_prot_virt_host() 0
|
||
|
|
static inline void setup_uv(void) {}
|
||
|
|
|
||
|
|
static inline int uv_destroy_owned_page(unsigned long paddr)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int uv_convert_from_secure(unsigned long paddr)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int uv_convert_owned_from_secure(unsigned long paddr)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _ASM_S390_UV_H */
|