1// SPDX-License-Identifier: GPL-2.0 OR MIT
  2/*
  3 * Copyright 2021 VMware, Inc., Palo Alto, CA., USA
  4 *
  5 * Permission is hereby granted, free of charge, to any person obtaining a
  6 * copy of this software and associated documentation files (the
  7 * "Software"), to deal in the Software without restriction, including
  8 * without limitation the rights to use, copy, modify, merge, publish,
  9 * distribute, sub license, and/or sell copies of the Software, and to
 10 * permit persons to whom the Software is furnished to do so, subject to
 11 * the following conditions:
 12 *
 13 * The above copyright notice and this permission notice (including the
 14 * next paragraph) shall be included in all copies or substantial portions
 15 * of the Software.
 16 *
 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 19 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 20 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 23 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 24 *
 25 */
 26#ifndef _VMWGFX_MSG_ARM64_H
 27#define _VMWGFX_MSG_ARM64_H
 28
 29#if defined(__aarch64__)
 30
 31#define VMWARE_HYPERVISOR_PORT    0x5658
 32#define VMWARE_HYPERVISOR_PORT_HB 0x5659
 33
 34#define VMWARE_HYPERVISOR_HB  BIT(0)
 35#define VMWARE_HYPERVISOR_OUT BIT(1)
 36
 37#define VMWARE_HYPERVISOR_MAGIC	0x564D5868
 38
 39#define X86_IO_MAGIC 0x86
 40
 41#define X86_IO_W7_SIZE_SHIFT 0
 42#define X86_IO_W7_SIZE_MASK (0x3 << X86_IO_W7_SIZE_SHIFT)
 43#define X86_IO_W7_DIR       (1 << 2)
 44#define X86_IO_W7_WITH	    (1 << 3)
 45#define X86_IO_W7_STR	    (1 << 4)
 46#define X86_IO_W7_DF	    (1 << 5)
 47#define X86_IO_W7_IMM_SHIFT  5
 48#define X86_IO_W7_IMM_MASK  (0xff << X86_IO_W7_IMM_SHIFT)
 49
 50static inline
 51unsigned long vmware_hypercall1(unsigned long cmd, unsigned long in1)
 52{
 53	register u64 x0 asm("x0") = VMWARE_HYPERVISOR_MAGIC;
 54	register u64 x1 asm("x1") = in1;
 55	register u64 x2 asm("x2") = cmd;
 56	register u64 x3 asm("x3") = VMWARE_HYPERVISOR_PORT;
 57	register u64 x7 asm("x7") = ((u64)X86_IO_MAGIC << 32) |
 58				    X86_IO_W7_WITH |
 59				    X86_IO_W7_DIR |
 60				    (2 << X86_IO_W7_SIZE_SHIFT);
 61
 62	asm_inline volatile (
 63		"mrs xzr, mdccsr_el0; "
 64		: "+r" (x0)
 65		: "r" (x1), "r" (x2), "r" (x3), "r" (x7)
 66		: "memory");
 67
 68	return x0;
 69}
 70
 71static inline
 72unsigned long vmware_hypercall5(unsigned long cmd, unsigned long in1,
 73				unsigned long in3, unsigned long in4,
 74				unsigned long in5, u32 *out2)
 75{
 76	register u64 x0 asm("x0") = VMWARE_HYPERVISOR_MAGIC;
 77	register u64 x1 asm("x1") = in1;
 78	register u64 x2 asm("x2") = cmd;
 79	register u64 x3 asm("x3") = in3 | VMWARE_HYPERVISOR_PORT;
 80	register u64 x4 asm("x4") = in4;
 81	register u64 x5 asm("x5") = in5;
 82	register u64 x7 asm("x7") = ((u64)X86_IO_MAGIC << 32) |
 83				    X86_IO_W7_WITH |
 84				    X86_IO_W7_DIR |
 85				    (2 << X86_IO_W7_SIZE_SHIFT);
 86
 87	asm_inline volatile (
 88		"mrs xzr, mdccsr_el0; "
 89		: "+r" (x0), "+r" (x2)
 90		: "r" (x1), "r" (x3), "r" (x4), "r" (x5), "r" (x7)
 91		: "memory");
 92
 93	*out2 = x2;
 94	return x0;
 95}
 96
 97static inline
 98unsigned long vmware_hypercall6(unsigned long cmd, unsigned long in1,
 99				unsigned long in3, u32 *out2,
100				u32 *out3, u32 *out4, u32 *out5)
101{
102	register u64 x0 asm("x0") = VMWARE_HYPERVISOR_MAGIC;
103	register u64 x1 asm("x1") = in1;
104	register u64 x2 asm("x2") = cmd;
105	register u64 x3 asm("x3") = in3 | VMWARE_HYPERVISOR_PORT;
106	register u64 x4 asm("x4");
107	register u64 x5 asm("x5");
108	register u64 x7 asm("x7") = ((u64)X86_IO_MAGIC << 32) |
109				    X86_IO_W7_WITH |
110				    X86_IO_W7_DIR |
111				    (2 << X86_IO_W7_SIZE_SHIFT);
112
113	asm_inline volatile (
114		"mrs xzr, mdccsr_el0; "
115		: "+r" (x0), "+r" (x2), "+r" (x3), "=r" (x4), "=r" (x5)
116		: "r" (x1), "r" (x7)
117		: "memory");
118
119	*out2 = x2;
120	*out3 = x3;
121	*out4 = x4;
122	*out5 = x5;
123	return x0;
124}
125
126static inline
127unsigned long vmware_hypercall7(unsigned long cmd, unsigned long in1,
128				unsigned long in3, unsigned long in4,
129				unsigned long in5, u32 *out1,
130				u32 *out2, u32 *out3)
131{
132	register u64 x0 asm("x0") = VMWARE_HYPERVISOR_MAGIC;
133	register u64 x1 asm("x1") = in1;
134	register u64 x2 asm("x2") = cmd;
135	register u64 x3 asm("x3") = in3 | VMWARE_HYPERVISOR_PORT;
136	register u64 x4 asm("x4") = in4;
137	register u64 x5 asm("x5") = in5;
138	register u64 x7 asm("x7") = ((u64)X86_IO_MAGIC << 32) |
139				    X86_IO_W7_WITH |
140				    X86_IO_W7_DIR |
141				    (2 << X86_IO_W7_SIZE_SHIFT);
142
143	asm_inline volatile (
144		"mrs xzr, mdccsr_el0; "
145		: "+r" (x0), "+r" (x1), "+r" (x2), "+r" (x3)
146		: "r" (x4), "r" (x5), "r" (x7)
147		: "memory");
148
149	*out1 = x1;
150	*out2 = x2;
151	*out3 = x3;
152	return x0;
153}
154
155static inline
156unsigned long vmware_hypercall_hb(unsigned long cmd, unsigned long in2,
157				  unsigned long in3, unsigned long in4,
158				  unsigned long in5, unsigned long in6,
159				  u32 *out1, int dir)
160{
161	register u64 x0 asm("x0") = VMWARE_HYPERVISOR_MAGIC;
162	register u64 x1 asm("x1") = cmd;
163	register u64 x2 asm("x2") = in2;
164	register u64 x3 asm("x3") = in3 | VMWARE_HYPERVISOR_PORT_HB;
165	register u64 x4 asm("x4") = in4;
166	register u64 x5 asm("x5") = in5;
167	register u64 x6 asm("x6") = in6;
168	register u64 x7 asm("x7") = ((u64)X86_IO_MAGIC << 32) |
169				    X86_IO_W7_STR |
170				    X86_IO_W7_WITH |
171				    dir;
172
173	asm_inline volatile (
174		"mrs xzr, mdccsr_el0; "
175		: "+r" (x0), "+r" (x1)
176		: "r" (x2), "r" (x3), "r" (x4), "r" (x5),
177		  "r" (x6), "r" (x7)
178		: "memory");
179
180	*out1 = x1;
181	return x0;
182}
183
184static inline
185unsigned long vmware_hypercall_hb_out(unsigned long cmd, unsigned long in2,
186				      unsigned long in3, unsigned long in4,
187				      unsigned long in5, unsigned long in6,
188				      u32 *out1)
189{
190	return vmware_hypercall_hb(cmd, in2, in3, in4, in5, in6, out1, 0);
191}
192
193static inline
194unsigned long vmware_hypercall_hb_in(unsigned long cmd, unsigned long in2,
195				     unsigned long in3, unsigned long in4,
196				     unsigned long in5, unsigned long in6,
197				     u32 *out1)
198{
199	return vmware_hypercall_hb(cmd, in2, in3, in4, in5, in6,  out1,
200				   X86_IO_W7_DIR);
201}
202#endif
203
204#endif /* _VMWGFX_MSG_ARM64_H */