Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 232 insertions, 0 deletions

diff --git a/arch/x86/include/uapi/asm/sgx.h b/arch/x86/include/uapi/asm/sgx.h
new file mode 100644
index 000000000..2dd35bbdc
--- /dev/null
+++ b/arch/x86/include/uapi/asm/sgx.h
@@ -0,0 +1,232 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright(c) 2016-20 Intel Corporation.
+ */
+#ifndef _UAPI_ASM_X86_SGX_H
+#define _UAPI_ASM_X86_SGX_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+/**
+ * enum sgx_page_flags - page control flags
+ * %SGX_PAGE_MEASURE:	Measure the page contents with a sequence of
+ *			ENCLS[EEXTEND] operations.
+ */
+enum sgx_page_flags {
+	SGX_PAGE_MEASURE	= 0x01,
+};
+
+#define SGX_MAGIC 0xA4
+
+#define SGX_IOC_ENCLAVE_CREATE \
+	_IOW(SGX_MAGIC, 0x00, struct sgx_enclave_create)
+#define SGX_IOC_ENCLAVE_ADD_PAGES \
+	_IOWR(SGX_MAGIC, 0x01, struct sgx_enclave_add_pages)
+#define SGX_IOC_ENCLAVE_INIT \
+	_IOW(SGX_MAGIC, 0x02, struct sgx_enclave_init)
+#define SGX_IOC_ENCLAVE_PROVISION \
+	_IOW(SGX_MAGIC, 0x03, struct sgx_enclave_provision)
+#define SGX_IOC_VEPC_REMOVE_ALL \
+	_IO(SGX_MAGIC, 0x04)
+#define SGX_IOC_ENCLAVE_RESTRICT_PERMISSIONS \
+	_IOWR(SGX_MAGIC, 0x05, struct sgx_enclave_restrict_permissions)
+#define SGX_IOC_ENCLAVE_MODIFY_TYPES \
+	_IOWR(SGX_MAGIC, 0x06, struct sgx_enclave_modify_types)
+#define SGX_IOC_ENCLAVE_REMOVE_PAGES \
+	_IOWR(SGX_MAGIC, 0x07, struct sgx_enclave_remove_pages)
+
+/**
+ * struct sgx_enclave_create - parameter structure for the
+ *                             %SGX_IOC_ENCLAVE_CREATE ioctl
+ * @src:	address for the SECS page data
+ */
+struct sgx_enclave_create  {
+	__u64	src;
+};
+
+/**
+ * struct sgx_enclave_add_pages - parameter structure for the
+ *                                %SGX_IOC_ENCLAVE_ADD_PAGE ioctl
+ * @src:	start address for the page data
+ * @offset:	starting page offset
+ * @length:	length of the data (multiple of the page size)
+ * @secinfo:	address for the SECINFO data
+ * @flags:	page control flags
+ * @count:	number of bytes added (multiple of the page size)
+ */
+struct sgx_enclave_add_pages {
+	__u64 src;
+	__u64 offset;
+	__u64 length;
+	__u64 secinfo;
+	__u64 flags;
+	__u64 count;
+};
+
+/**
+ * struct sgx_enclave_init - parameter structure for the
+ *                           %SGX_IOC_ENCLAVE_INIT ioctl
+ * @sigstruct:	address for the SIGSTRUCT data
+ */
+struct sgx_enclave_init {
+	__u64 sigstruct;
+};
+
+/**
+ * struct sgx_enclave_provision - parameter structure for the
+ *				  %SGX_IOC_ENCLAVE_PROVISION ioctl
+ * @fd:		file handle of /dev/sgx_provision
+ */
+struct sgx_enclave_provision {
+	__u64 fd;
+};
+
+/**
+ * struct sgx_enclave_restrict_permissions - parameters for ioctl
+ *                                        %SGX_IOC_ENCLAVE_RESTRICT_PERMISSIONS
+ * @offset:	starting page offset (page aligned relative to enclave base
+ *		address defined in SECS)
+ * @length:	length of memory (multiple of the page size)
+ * @permissions:new permission bits for pages in range described by @offset
+ *              and @length
+ * @result:	(output) SGX result code of ENCLS[EMODPR] function
+ * @count:	(output) bytes successfully changed (multiple of page size)
+ */
+struct sgx_enclave_restrict_permissions {
+	__u64 offset;
+	__u64 length;
+	__u64 permissions;
+	__u64 result;
+	__u64 count;
+};
+
+/**
+ * struct sgx_enclave_modify_types - parameters for ioctl
+ *                                   %SGX_IOC_ENCLAVE_MODIFY_TYPES
+ * @offset:	starting page offset (page aligned relative to enclave base
+ *		address defined in SECS)
+ * @length:	length of memory (multiple of the page size)
+ * @page_type:	new type for pages in range described by @offset and @length
+ * @result:	(output) SGX result code of ENCLS[EMODT] function
+ * @count:	(output) bytes successfully changed (multiple of page size)
+ */
+struct sgx_enclave_modify_types {
+	__u64 offset;
+	__u64 length;
+	__u64 page_type;
+	__u64 result;
+	__u64 count;
+};
+
+/**
+ * struct sgx_enclave_remove_pages - %SGX_IOC_ENCLAVE_REMOVE_PAGES parameters
+ * @offset:	starting page offset (page aligned relative to enclave base
+ *		address defined in SECS)
+ * @length:	length of memory (multiple of the page size)
+ * @count:	(output) bytes successfully changed (multiple of page size)
+ *
+ * Regular (PT_REG) or TCS (PT_TCS) can be removed from an initialized
+ * enclave if the system supports SGX2. First, the %SGX_IOC_ENCLAVE_MODIFY_TYPES
+ * ioctl() should be used to change the page type to PT_TRIM. After that
+ * succeeds ENCLU[EACCEPT] should be run from within the enclave and then
+ * %SGX_IOC_ENCLAVE_REMOVE_PAGES can be used to complete the page removal.
+ */
+struct sgx_enclave_remove_pages {
+	__u64 offset;
+	__u64 length;
+	__u64 count;
+};
+
+struct sgx_enclave_run;
+
+/**
+ * typedef sgx_enclave_user_handler_t - Exit handler function accepted by
+ *					__vdso_sgx_enter_enclave()
+ * @run:	The run instance given by the caller
+ *
+ * The register parameters contain the snapshot of their values at enclave
+ * exit. An invalid ENCLU function number will cause -EINVAL to be returned
+ * to the caller.
+ *
+ * Return:
+ * - <= 0:	The given value is returned back to the caller.
+ * - > 0:	ENCLU function to invoke, either EENTER or ERESUME.
+ */
+typedef int (*sgx_enclave_user_handler_t)(long rdi, long rsi, long rdx,
+					  long rsp, long r8, long r9,
+					  struct sgx_enclave_run *run);
+
+/**
+ * struct sgx_enclave_run - the execution context of __vdso_sgx_enter_enclave()
+ * @tcs:			TCS used to enter the enclave
+ * @function:			The last seen ENCLU function (EENTER, ERESUME or EEXIT)
+ * @exception_vector:		The interrupt vector of the exception
+ * @exception_error_code:	The exception error code pulled out of the stack
+ * @exception_addr:		The address that triggered the exception
+ * @user_handler:		User provided callback run on exception
+ * @user_data:			Data passed to the user handler
+ * @reserved			Reserved for future extensions
+ *
+ * If @user_handler is provided, the handler will be invoked on all return paths
+ * of the normal flow.  The user handler may transfer control, e.g. via a
+ * longjmp() call or a C++ exception, without returning to
+ * __vdso_sgx_enter_enclave().
+ */
+struct sgx_enclave_run {
+	__u64 tcs;
+	__u32 function;
+	__u16 exception_vector;
+	__u16 exception_error_code;
+	__u64 exception_addr;
+	__u64 user_handler;
+	__u64 user_data;
+	__u8  reserved[216];
+};
+
+/**
+ * typedef vdso_sgx_enter_enclave_t - Prototype for __vdso_sgx_enter_enclave(),
+ *				      a vDSO function to enter an SGX enclave.
+ * @rdi:	Pass-through value for RDI
+ * @rsi:	Pass-through value for RSI
+ * @rdx:	Pass-through value for RDX
+ * @function:	ENCLU function, must be EENTER or ERESUME
+ * @r8:		Pass-through value for R8
+ * @r9:		Pass-through value for R9
+ * @run:	struct sgx_enclave_run, must be non-NULL
+ *
+ * NOTE: __vdso_sgx_enter_enclave() does not ensure full compliance with the
+ * x86-64 ABI, e.g. doesn't handle XSAVE state.  Except for non-volatile
+ * general purpose registers, EFLAGS.DF, and RSP alignment, preserving/setting
+ * state in accordance with the x86-64 ABI is the responsibility of the enclave
+ * and its runtime, i.e. __vdso_sgx_enter_enclave() cannot be called from C
+ * code without careful consideration by both the enclave and its runtime.
+ *
+ * All general purpose registers except RAX, RBX and RCX are passed as-is to the
+ * enclave.  RAX, RBX and RCX are consumed by EENTER and ERESUME and are loaded
+ * with @function, asynchronous exit pointer, and @run.tcs respectively.
+ *
+ * RBP and the stack are used to anchor __vdso_sgx_enter_enclave() to the
+ * pre-enclave state, e.g. to retrieve @run.exception and @run.user_handler
+ * after an enclave exit.  All other registers are available for use by the
+ * enclave and its runtime, e.g. an enclave can push additional data onto the
+ * stack (and modify RSP) to pass information to the optional user handler (see
+ * below).
+ *
+ * Most exceptions reported on ENCLU, including those that occur within the
+ * enclave, are fixed up and reported synchronously instead of being delivered
+ * via a standard signal. Debug Exceptions (#DB) and Breakpoints (#BP) are
+ * never fixed up and are always delivered via standard signals. On synchronously
+ * reported exceptions, -EFAULT is returned and details about the exception are
+ * recorded in @run.exception, the optional sgx_enclave_exception struct.
+ *
+ * Return:
+ * - 0:		ENCLU function was successfully executed.
+ * - -EINVAL:	Invalid ENCL number (neither EENTER nor ERESUME).
+ */
+typedef int (*vdso_sgx_enter_enclave_t)(unsigned long rdi, unsigned long rsi,
+					unsigned long rdx, unsigned int function,
+					unsigned long r8,  unsigned long r9,
+					struct sgx_enclave_run *run);
+
+#endif /* _UAPI_ASM_X86_SGX_H */