From 9b3ea8593ae878da49c404f00c6a09b7fceb0365 Mon Sep 17 00:00:00 2001
From: Chris Goldsworthy <quic_cgoldswo@quicinc.com>
Date: Thu, 21 Apr 2022 13:31:03 -0700
Subject: [PATCH] secure_buffer: Add the secure_buffer.h header file

Take a snapshot of the secure_buffer.h file as of commit f843a80d2c45
("Merge "defconfig: gen3auto: Separated if_changed"") on msm-5.15.

Change-Id: Ic6f1b59ead3bb2947d05ed3d2ea0eecf70597fe7
Signed-off-by: Chris Goldsworthy <quic_cgoldswo@quicinc.com>
---
 include/soc/qcom/secure_buffer.h | 90 ++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 include/soc/qcom/secure_buffer.h

diff --git a/include/soc/qcom/secure_buffer.h b/include/soc/qcom/secure_buffer.h
new file mode 100644
index 000000000000..88f8e71694be
--- /dev/null
+++ b/include/soc/qcom/secure_buffer.h
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef __QCOM_SECURE_BUFFER_H__
+#define __QCOM_SECURE_BUFFER_H__
+
+#include <linux/scatterlist.h>
+
+/*
+ * if you add a secure VMID here make sure you update
+ * msm_secure_vmid_to_string.
+ * Make sure to keep the VMID_LAST as the last entry in the enum.
+ * This is needed in ion to create a list and it's sized using VMID_LAST.
+ */
+enum vmid {
+	VMID_TZ = 0x1,
+	VMID_HLOS = 0x3,
+	VMID_CP_TOUCH = 0x8,
+	VMID_CP_BITSTREAM = 0x9,
+	VMID_CP_PIXEL = 0xA,
+	VMID_CP_NON_PIXEL = 0xB,
+	VMID_CP_CAMERA = 0xD,
+	VMID_HLOS_FREE = 0xE,
+	VMID_MSS_MSA = 0xF,
+	VMID_MSS_NONMSA = 0x10,
+	VMID_CP_SEC_DISPLAY = 0x11,
+	VMID_CP_APP = 0x12,
+	VMID_LPASS = 0x16,
+	VMID_WLAN = 0x18,
+	VMID_WLAN_CE = 0x19,
+	VMID_CP_SPSS_SP = 0x1A,
+	VMID_CP_CAMERA_PREVIEW = 0x1D,
+	VMID_CP_SPSS_SP_SHARED = 0x22,
+	VMID_CP_SPSS_HLOS_SHARED = 0x24,
+	VMID_ADSP_HEAP = 0x25,
+	VMID_CP_CDSP = 0x2A,
+	VMID_NAV = 0x2B,
+	VMID_LAST,
+	VMID_INVAL = -1
+};
+
+#define PERM_READ                       0x4
+#define PERM_WRITE                      0x2
+#define PERM_EXEC			0x1
+
+#if IS_ENABLED(CONFIG_QCOM_SECURE_BUFFER)
+int hyp_assign_table(struct sg_table *table,
+			u32 *source_vm_list, int source_nelems,
+			int *dest_vmids, int *dest_perms,
+			int dest_nelems);
+int hyp_assign_phys(phys_addr_t addr, u64 size,
+			u32 *source_vmlist, int source_nelems,
+			int *dest_vmids, int *dest_perms, int dest_nelems);
+const char *msm_secure_vmid_to_string(int secure_vmid);
+u32 msm_secure_get_vmid_perms(u32 vmid);
+int page_accessible(unsigned long pfn);
+#else
+static inline int hyp_assign_table(struct sg_table *table,
+			u32 *source_vm_list, int source_nelems,
+			int *dest_vmids, int *dest_perms,
+			int dest_nelems)
+{
+	return -EINVAL;
+}
+
+static inline int hyp_assign_phys(phys_addr_t addr, u64 size,
+			u32 *source_vmlist, int source_nelems,
+			int *dest_vmids, int *dest_perms, int dest_nelems)
+{
+	return -EINVAL;
+}
+
+static inline const char *msm_secure_vmid_to_string(int secure_vmid)
+{
+	return "N/A";
+}
+
+static inline u32 msm_secure_get_vmid_perms(u32 vmid)
+{
+	return 0;
+}
+
+static inline int page_accessible(unsigned long pfn)
+{
+	return 1;
+}
+#endif
+#endif