Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 517 insertions, 0 deletions

diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h
new file mode 100644
index 000000000..0e7bd3873
--- /dev/null
+++ b/arch/s390/include/asm/uv.h
@@ -0,0 +1,517 @@
+/* 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_DESTROY_SEC_CONF_FAST	0x0102
+#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
+#define UVC_CMD_ADD_SECRET		0x1031
+#define UVC_CMD_LIST_SECRETS		0x1033
+#define UVC_CMD_LOCK_SECRETS		0x1034
+
+/* 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_DESTROY_SEC_CONF_FAST = 23,
+	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,
+	BIT_UVC_CMD_ADD_SECRET = 29,
+	BIT_UVC_CMD_LIST_SECRETS = 30,
+	BIT_UVC_CMD_LOCK_SECRETS = 31,
+};
+
+enum uv_feat_ind {
+	BIT_UV_FEAT_MISC = 0,
+	BIT_UV_FEAT_AIV = 1,
+	BIT_UV_FEAT_AP = 4,
+	BIT_UV_FEAT_AP_INTR = 5,
+};
+
+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[0x9e - 0x88];		/* 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 */
+	u64 reservedf0;				/* 0x00f0 */
+	u64 supp_add_secret_req_ver;		/* 0x00f8 */
+	u64 supp_add_secret_pcf;		/* 0x0100 */
+	u64 supp_secret_types;			/* 0x0180 */
+	u16 max_secrets;			/* 0x0110 */
+	u8 reserved112[0x120 - 0x112];		/* 0x0112 */
+} __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;
+	u8  reserved30[6];
+	union {
+		struct {
+			u16 : 14;
+			u16 ap_instr_intr : 1;
+			u16 ap_allow_instr : 1;
+		};
+		u16 raw;
+	} flags;
+	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);
+
+/* Destroy Configuration Fast */
+struct uv_cb_destroy_fast {
+	struct uv_cb_header header;
+	u64 reserved08[2];
+	u64 handle;
+	u64 reserved20[5];
+} __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);
+
+/*
+ * A common UV call struct for pv guests that contains a single address
+ * Examples:
+ * Add Secret
+ * List Secrets
+ */
+struct uv_cb_guest_addr {
+	struct uv_cb_header header;
+	u64 reserved08[3];
+	u64 addr;
+	u64 reserved28[4];
+} __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;
+	unsigned long supp_add_secret_req_ver;
+	unsigned long supp_add_secret_pcf;
+	unsigned long supp_secret_types;
+	unsigned short max_secrets;
+};
+
+extern struct uv_info uv_info;
+
+static inline bool uv_has_feature(u8 feature_bit)
+{
+	if (feature_bit >= sizeof(uv_info.uv_feature_indications) * 8)
+		return false;
+	return test_bit_inv(feature_bit, &uv_info.uv_feature_indications);
+}
+
+#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 uv_pin_shared(unsigned long paddr);
+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_pin_shared(unsigned long paddr)
+{
+	return 0;
+}
+
+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 */