diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h b/drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h new file mode 100644 index 000000000..4f40167ad --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h @@ -0,0 +1,130 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/* + * Copyright 2021 VMware, Inc., Palo Alto, CA., USA + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + */ +#ifndef _VMWGFX_MSG_ARM64_H +#define _VMWGFX_MSG_ARM64_H + +#if defined(__aarch64__) + +#define VMWARE_HYPERVISOR_PORT 0x5658 +#define VMWARE_HYPERVISOR_PORT_HB 0x5659 + +#define VMWARE_HYPERVISOR_HB BIT(0) +#define VMWARE_HYPERVISOR_OUT BIT(1) + +#define X86_IO_MAGIC 0x86 + +#define X86_IO_W7_SIZE_SHIFT 0 +#define X86_IO_W7_SIZE_MASK (0x3 << X86_IO_W7_SIZE_SHIFT) +#define X86_IO_W7_DIR (1 << 2) +#define X86_IO_W7_WITH (1 << 3) +#define X86_IO_W7_STR (1 << 4) +#define X86_IO_W7_DF (1 << 5) +#define X86_IO_W7_IMM_SHIFT 5 +#define X86_IO_W7_IMM_MASK (0xff << X86_IO_W7_IMM_SHIFT) + +static inline void vmw_port(unsigned long cmd, unsigned long in_ebx, + unsigned long in_si, unsigned long in_di, + unsigned long flags, unsigned long magic, + unsigned long *eax, unsigned long *ebx, + unsigned long *ecx, unsigned long *edx, + unsigned long *si, unsigned long *di) +{ + register u64 x0 asm("x0") = magic; + register u64 x1 asm("x1") = in_ebx; + register u64 x2 asm("x2") = cmd; + register u64 x3 asm("x3") = flags | VMWARE_HYPERVISOR_PORT; + register u64 x4 asm("x4") = in_si; + register u64 x5 asm("x5") = in_di; + + register u64 x7 asm("x7") = ((u64)X86_IO_MAGIC << 32) | + X86_IO_W7_WITH | + X86_IO_W7_DIR | + (2 << X86_IO_W7_SIZE_SHIFT); + + asm volatile("mrs xzr, mdccsr_el0 \n\t" + : "+r"(x0), "+r"(x1), "+r"(x2), + "+r"(x3), "+r"(x4), "+r"(x5) + : "r"(x7) + :); + *eax = x0; + *ebx = x1; + *ecx = x2; + *edx = x3; + *si = x4; + *di = x5; +} + +static inline void vmw_port_hb(unsigned long cmd, unsigned long in_ecx, + unsigned long in_si, unsigned long in_di, + unsigned long flags, unsigned long magic, + unsigned long bp, u32 w7dir, + unsigned long *eax, unsigned long *ebx, + unsigned long *ecx, unsigned long *edx, + unsigned long *si, unsigned long *di) +{ + register u64 x0 asm("x0") = magic; + register u64 x1 asm("x1") = cmd; + register u64 x2 asm("x2") = in_ecx; + register u64 x3 asm("x3") = flags | VMWARE_HYPERVISOR_PORT_HB; + register u64 x4 asm("x4") = in_si; + register u64 x5 asm("x5") = in_di; + register u64 x6 asm("x6") = bp; + register u64 x7 asm("x7") = ((u64)X86_IO_MAGIC << 32) | + X86_IO_W7_STR | + X86_IO_W7_WITH | + w7dir; + + asm volatile("mrs xzr, mdccsr_el0 \n\t" + : "+r"(x0), "+r"(x1), "+r"(x2), + "+r"(x3), "+r"(x4), "+r"(x5) + : "r"(x6), "r"(x7) + :); + *eax = x0; + *ebx = x1; + *ecx = x2; + *edx = x3; + *si = x4; + *di = x5; +} + +#define VMW_PORT(cmd, in_ebx, in_si, in_di, flags, magic, eax, ebx, ecx, edx, \ + si, di) \ + vmw_port(cmd, in_ebx, in_si, in_di, flags, magic, &eax, &ebx, &ecx, \ + &edx, &si, &di) + +#define VMW_PORT_HB_OUT(cmd, in_ecx, in_si, in_di, flags, magic, bp, eax, ebx, \ + ecx, edx, si, di) \ + vmw_port_hb(cmd, in_ecx, in_si, in_di, flags, magic, bp, \ + 0, &eax, &ebx, &ecx, &edx, &si, &di) + +#define VMW_PORT_HB_IN(cmd, in_ecx, in_si, in_di, flags, magic, bp, eax, ebx, \ + ecx, edx, si, di) \ + vmw_port_hb(cmd, in_ecx, in_si, in_di, flags, magic, bp, \ + X86_IO_W7_DIR, &eax, &ebx, &ecx, &edx, &si, &di) + +#endif + +#endif /* _VMWGFX_MSG_ARM64_H */ |