diff options
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_msg.c | 31 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_msg.h | 214 | ||||
| -rwxr-xr-x | drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h | 130 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_msg_x86.h | 219 |
7 files changed, 378 insertions, 230 deletions
diff --git a/drivers/gpu/drm/vmwgfx/Kconfig b/drivers/gpu/drm/vmwgfx/Kconfig index b3a34196935b..0060ef842b5a 100644 --- a/drivers/gpu/drm/vmwgfx/Kconfig +++ b/drivers/gpu/drm/vmwgfx/Kconfig @@ -1,7 +1,8 @@ # SPDX-License-Identifier: GPL-2.0 config DRM_VMWGFX tristate "DRM driver for VMware Virtual GPU" - depends on DRM && PCI && X86 && MMU + depends on DRM && PCI && MMU + depends on X86 || ARM64 select DRM_TTM select MAPPING_DIRTY_HELPERS # Only needed for the transitional use of drm_crtc_init - can be removed diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index 4904100ef492..5cf3a5bf539f 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -37,6 +37,7 @@ #include <drm/drm_sysfs.h> #include <drm/ttm/ttm_bo_driver.h> #include <drm/ttm/ttm_placement.h> +#include <generated/utsrelease.h> #include "ttm_object.h" #include "vmwgfx_binding.h" @@ -781,7 +782,6 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id) int ret; enum vmw_res_type i; bool refuse_dma = false; - char host_log[100] = {0}; struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); dev_priv->vmw_chipset = pci_id; @@ -1050,10 +1050,9 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id) DRM_INFO("SM4 support available.\n"); DRM_INFO("Running without reservation semaphore\n"); - snprintf(host_log, sizeof(host_log), "vmwgfx: Module Version: %d.%d.%d", - VMWGFX_DRIVER_MAJOR, VMWGFX_DRIVER_MINOR, - VMWGFX_DRIVER_PATCHLEVEL); - vmw_host_log(host_log); + vmw_host_printf("vmwgfx: Module Version: %d.%d.%d (kernel: %s)", + VMWGFX_DRIVER_MAJOR, VMWGFX_DRIVER_MINOR, + VMWGFX_DRIVER_PATCHLEVEL, UTS_RELEASE); if (dev_priv->enable_fb) { vmw_fifo_resource_inc(dev_priv); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h index dcdbc59c2b5f..d1cef3b69e9d 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h @@ -1498,7 +1498,7 @@ int vmw_bo_cpu_blit(struct ttm_buffer_object *dst, /* Host messaging -vmwgfx_msg.c: */ int vmw_host_get_guestinfo(const char *guest_info_param, char *buffer, size_t *length); -int vmw_host_log(const char *log); +__printf(1, 2) int vmw_host_printf(const char *fmt, ...); int vmw_msg_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c index 609269625468..3d08f5700bdb 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c @@ -33,7 +33,8 @@ #include <asm/hypervisor.h> #include "vmwgfx_drv.h" -#include "vmwgfx_msg.h" +#include "vmwgfx_msg_x86.h" +#include "vmwgfx_msg_arm64.h" #define MESSAGE_STATUS_SUCCESS 0x0001 #define MESSAGE_STATUS_DORECV 0x0002 @@ -473,30 +474,40 @@ out_open: } - /** - * vmw_host_log: Sends a log message to the host + * vmw_host_printf: Sends a log message to the host * - * @log: NULL terminated string + * @fmt: Regular printf format string and arguments * * Returns: 0 on success */ -int vmw_host_log(const char *log) +__printf(1, 2) +int vmw_host_printf(const char *fmt, ...) { + va_list ap; struct rpc_channel channel; char *msg; + char *log; int ret = 0; - if (!vmw_msg_enabled) return -ENODEV; - if (!log) + if (!fmt) return ret; + va_start(ap, fmt); + log = kvasprintf(GFP_KERNEL, fmt, ap); + va_end(ap); + if (!log) { + DRM_ERROR("Cannot allocate memory for the log message.\n"); + return -ENOMEM; + } + msg = kasprintf(GFP_KERNEL, "log %s", log); if (!msg) { DRM_ERROR("Cannot allocate memory for host log message.\n"); + kfree(log); return -ENOMEM; } @@ -508,6 +519,7 @@ int vmw_host_log(const char *log) vmw_close_channel(&channel); kfree(msg); + kfree(log); return 0; @@ -515,6 +527,7 @@ out_msg: vmw_close_channel(&channel); out_open: kfree(msg); + kfree(log); DRM_ERROR("Failed to send host log message.\n"); return -EINVAL; @@ -537,7 +550,7 @@ int vmw_msg_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_vmw_msg_arg *arg = - (struct drm_vmw_msg_arg *) data; + (struct drm_vmw_msg_arg *)data; struct rpc_channel channel; char *msg; int length; @@ -577,7 +590,7 @@ int vmw_msg_ioctl(struct drm_device *dev, void *data, } if (reply && reply_len > 0) { if (copy_to_user((void __user *)((unsigned long)arg->receive), - reply, reply_len)) { + reply, reply_len)) { DRM_ERROR("Failed to copy message to userspace.\n"); kfree(reply); goto out_msg; diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.h b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.h deleted file mode 100644 index f685c7071dec..000000000000 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.h +++ /dev/null @@ -1,214 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ OR MIT */ -/************************************************************************** - * - * Copyright 2016 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. - * - ************************************************************************** - * - * Based on code from vmware.c and vmmouse.c. - * Author: - * Sinclair Yeh <syeh@vmware.com> - */ -#ifndef _VMWGFX_MSG_H -#define _VMWGFX_MSG_H - -#include <asm/vmware.h> - -/** - * Hypervisor-specific bi-directional communication channel. Should never - * execute on bare metal hardware. The caller must make sure to check for - * supported hypervisor before using these macros. - * - * The last two parameters are both input and output and must be initialized. - * - * @cmd: [IN] Message Cmd - * @in_ebx: [IN] Message Len, through EBX - * @in_si: [IN] Input argument through SI, set to 0 if not used - * @in_di: [IN] Input argument through DI, set ot 0 if not used - * @flags: [IN] hypercall flags + [channel id] - * @magic: [IN] hypervisor magic value - * @eax: [OUT] value of EAX register - * @ebx: [OUT] e.g. status from an HB message status command - * @ecx: [OUT] e.g. status from a non-HB message status command - * @edx: [OUT] e.g. channel id - * @si: [OUT] - * @di: [OUT] - */ -#define VMW_PORT(cmd, in_ebx, in_si, in_di, \ - flags, magic, \ - eax, ebx, ecx, edx, si, di) \ -({ \ - asm volatile (VMWARE_HYPERCALL : \ - "=a"(eax), \ - "=b"(ebx), \ - "=c"(ecx), \ - "=d"(edx), \ - "=S"(si), \ - "=D"(di) : \ - "a"(magic), \ - "b"(in_ebx), \ - "c"(cmd), \ - "d"(flags), \ - "S"(in_si), \ - "D"(in_di) : \ - "memory"); \ -}) - - -/** - * Hypervisor-specific bi-directional communication channel. Should never - * execute on bare metal hardware. The caller must make sure to check for - * supported hypervisor before using these macros. - * - * The last 3 parameters are both input and output and must be initialized. - * - * @cmd: [IN] Message Cmd - * @in_ecx: [IN] Message Len, through ECX - * @in_si: [IN] Input argument through SI, set to 0 if not used - * @in_di: [IN] Input argument through DI, set to 0 if not used - * @flags: [IN] hypercall flags + [channel id] - * @magic: [IN] hypervisor magic value - * @bp: [IN] - * @eax: [OUT] value of EAX register - * @ebx: [OUT] e.g. status from an HB message status command - * @ecx: [OUT] e.g. status from a non-HB message status command - * @edx: [OUT] e.g. channel id - * @si: [OUT] - * @di: [OUT] - */ -#ifdef __x86_64__ - -#define VMW_PORT_HB_OUT(cmd, in_ecx, in_si, in_di, \ - flags, magic, bp, \ - eax, ebx, ecx, edx, si, di) \ -({ \ - asm volatile ("push %%rbp;" \ - "mov %12, %%rbp;" \ - VMWARE_HYPERCALL_HB_OUT \ - "pop %%rbp;" : \ - "=a"(eax), \ - "=b"(ebx), \ - "=c"(ecx), \ - "=d"(edx), \ - "=S"(si), \ - "=D"(di) : \ - "a"(magic), \ - "b"(cmd), \ - "c"(in_ecx), \ - "d"(flags), \ - "S"(in_si), \ - "D"(in_di), \ - "r"(bp) : \ - "memory", "cc"); \ -}) - - -#define VMW_PORT_HB_IN(cmd, in_ecx, in_si, in_di, \ - flags, magic, bp, \ - eax, ebx, ecx, edx, si, di) \ -({ \ - asm volatile ("push %%rbp;" \ - "mov %12, %%rbp;" \ - VMWARE_HYPERCALL_HB_IN \ - "pop %%rbp" : \ - "=a"(eax), \ - "=b"(ebx), \ - "=c"(ecx), \ - "=d"(edx), \ - "=S"(si), \ - "=D"(di) : \ - "a"(magic), \ - "b"(cmd), \ - "c"(in_ecx), \ - "d"(flags), \ - "S"(in_si), \ - "D"(in_di), \ - "r"(bp) : \ - "memory", "cc"); \ -}) - -#else - -/* - * In the 32-bit version of this macro, we store bp in a memory location - * because we've ran out of registers. - * Now we can't reference that memory location while we've modified - * %esp or %ebp, so we first push it on the stack, just before we push - * %ebp, and then when we need it we read it from the stack where we - * just pushed it. - */ -#define VMW_PORT_HB_OUT(cmd, in_ecx, in_si, in_di, \ - flags, magic, bp, \ - eax, ebx, ecx, edx, si, di) \ -({ \ - asm volatile ("push %12;" \ - "push %%ebp;" \ - "mov 0x04(%%esp), %%ebp;" \ - VMWARE_HYPERCALL_HB_OUT \ - "pop %%ebp;" \ - "add $0x04, %%esp;" : \ - "=a"(eax), \ - "=b"(ebx), \ - "=c"(ecx), \ - "=d"(edx), \ - "=S"(si), \ - "=D"(di) : \ - "a"(magic), \ - "b"(cmd), \ - "c"(in_ecx), \ - "d"(flags), \ - "S"(in_si), \ - "D"(in_di), \ - "m"(bp) : \ - "memory", "cc"); \ -}) - - -#define VMW_PORT_HB_IN(cmd, in_ecx, in_si, in_di, \ - flags, magic, bp, \ - eax, ebx, ecx, edx, si, di) \ -({ \ - asm volatile ("push %12;" \ - "push %%ebp;" \ - "mov 0x04(%%esp), %%ebp;" \ - VMWARE_HYPERCALL_HB_IN \ - "pop %%ebp;" \ - "add $0x04, %%esp;" : \ - "=a"(eax), \ - "=b"(ebx), \ - "=c"(ecx), \ - "=d"(edx), \ - "=S"(si), \ - "=D"(di) : \ - "a"(magic), \ - "b"(cmd), \ - "c"(in_ecx), \ - "d"(flags), \ - "S"(in_si), \ - "D"(in_di), \ - "m"(bp) : \ - "memory", "cc"); \ -}) -#endif /* #if __x86_64__ */ - -#endif diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h b/drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h new file mode 100755 index 000000000000..4f40167ad61f --- /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 */ diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg_x86.h b/drivers/gpu/drm/vmwgfx/vmwgfx_msg_x86.h new file mode 100644 index 000000000000..0b74ca2dfb7b --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg_x86.h @@ -0,0 +1,219 @@ +/* SPDX-License-Identifier: GPL-2.0+ OR MIT */ +/************************************************************************** + * + * Copyright 2016-2021 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. + * + ************************************************************************** + * + * Based on code from vmware.c and vmmouse.c. + * Author: + * Sinclair Yeh <syeh@vmware.com> + */ +#ifndef _VMWGFX_MSG_X86_H +#define _VMWGFX_MSG_X86_H + + +#if defined(__i386__) || defined(__x86_64__) + +#include <asm/vmware.h> + +/** + * Hypervisor-specific bi-directional communication channel. Should never + * execute on bare metal hardware. The caller must make sure to check for + * supported hypervisor before using these macros. + * + * The last two parameters are both input and output and must be initialized. + * + * @cmd: [IN] Message Cmd + * @in_ebx: [IN] Message Len, through EBX + * @in_si: [IN] Input argument through SI, set to 0 if not used + * @in_di: [IN] Input argument through DI, set ot 0 if not used + * @flags: [IN] hypercall flags + [channel id] + * @magic: [IN] hypervisor magic value + * @eax: [OUT] value of EAX register + * @ebx: [OUT] e.g. status from an HB message status command + * @ecx: [OUT] e.g. status from a non-HB message status command + * @edx: [OUT] e.g. channel id + * @si: [OUT] + * @di: [OUT] + */ +#define VMW_PORT(cmd, in_ebx, in_si, in_di, \ + flags, magic, \ + eax, ebx, ecx, edx, si, di) \ +({ \ + asm volatile (VMWARE_HYPERCALL : \ + "=a"(eax), \ + "=b"(ebx), \ + "=c"(ecx), \ + "=d"(edx), \ + "=S"(si), \ + "=D"(di) : \ + "a"(magic), \ + "b"(in_ebx), \ + "c"(cmd), \ + "d"(flags), \ + "S"(in_si), \ + "D"(in_di) : \ + "memory"); \ +}) + + +/** + * Hypervisor-specific bi-directional communication channel. Should never + * execute on bare metal hardware. The caller must make sure to check for + * supported hypervisor before using these macros. + * + * The last 3 parameters are both input and output and must be initialized. + * + * @cmd: [IN] Message Cmd + * @in_ecx: [IN] Message Len, through ECX + * @in_si: [IN] Input argument through SI, set to 0 if not used + * @in_di: [IN] Input argument through DI, set to 0 if not used + * @flags: [IN] hypercall flags + [channel id] + * @magic: [IN] hypervisor magic value + * @bp: [IN] + * @eax: [OUT] value of EAX register + * @ebx: [OUT] e.g. status from an HB message status command + * @ecx: [OUT] e.g. status from a non-HB message status command + * @edx: [OUT] e.g. channel id + * @si: [OUT] + * @di: [OUT] + */ +#ifdef __x86_64__ + +#define VMW_PORT_HB_OUT(cmd, in_ecx, in_si, in_di, \ + flags, magic, bp, \ + eax, ebx, ecx, edx, si, di) \ +({ \ + asm volatile ("push %%rbp;" \ + "mov %12, %%rbp;" \ + VMWARE_HYPERCALL_HB_OUT \ + "pop %%rbp;" : \ + "=a"(eax), \ + "=b"(ebx), \ + "=c"(ecx), \ + "=d"(edx), \ + "=S"(si), \ + "=D"(di) : \ + "a"(magic), \ + "b"(cmd), \ + "c"(in_ecx), \ + "d"(flags), \ + "S"(in_si), \ + "D"(in_di), \ + "r"(bp) : \ + "memory", "cc"); \ +}) + + +#define VMW_PORT_HB_IN(cmd, in_ecx, in_si, in_di, \ + flags, magic, bp, \ + eax, ebx, ecx, edx, si, di) \ +({ \ + asm volatile ("push %%rbp;" \ + "mov %12, %%rbp;" \ + VMWARE_HYPERCALL_HB_IN \ + "pop %%rbp" : \ + "=a"(eax), \ + "=b"(ebx), \ + "=c"(ecx), \ + "=d"(edx), \ + "=S"(si), \ + "=D"(di) : \ + "a"(magic), \ + "b"(cmd), \ + "c"(in_ecx), \ + "d"(flags), \ + "S"(in_si), \ + "D"(in_di), \ + "r"(bp) : \ + "memory", "cc"); \ +}) + +#elif defined(__i386__) + +/* + * In the 32-bit version of this macro, we store bp in a memory location + * because we've ran out of registers. + * Now we can't reference that memory location while we've modified + * %esp or %ebp, so we first push it on the stack, just before we push + * %ebp, and then when we need it we read it from the stack where we + * just pushed it. + */ +#define VMW_PORT_HB_OUT(cmd, in_ecx, in_si, in_di, \ + flags, magic, bp, \ + eax, ebx, ecx, edx, si, di) \ +({ \ + asm volatile ("push %12;" \ + "push %%ebp;" \ + "mov 0x04(%%esp), %%ebp;" \ + VMWARE_HYPERCALL_HB_OUT \ + "pop %%ebp;" \ + "add $0x04, %%esp;" : \ + "=a"(eax), \ + "=b"(ebx), \ + "=c"(ecx), \ + "=d"(edx), \ + "=S"(si), \ + "=D"(di) : \ + "a"(magic), \ + "b"(cmd), \ + "c"(in_ecx), \ + "d"(flags), \ + "S"(in_si), \ + "D"(in_di), \ + "m"(bp) : \ + "memory", "cc"); \ +}) + + +#define VMW_PORT_HB_IN(cmd, in_ecx, in_si, in_di, \ + flags, magic, bp, \ + eax, ebx, ecx, edx, si, di) \ +({ \ + asm volatile ("push %12;" \ + "push %%ebp;" \ + "mov 0x04(%%esp), %%ebp;" \ + VMWARE_HYPERCALL_HB_IN \ + "pop %%ebp;" \ + "add $0x04, %%esp;" : \ + "=a"(eax), \ + "=b"(ebx), \ + "=c"(ecx), \ + "=d"(edx), \ + "=S"(si), \ + "=D"(di) : \ + "a"(magic), \ + "b"(cmd), \ + "c"(in_ecx), \ + "d"(flags), \ + "S"(in_si), \ + "D"(in_di), \ + "m"(bp) : \ + "memory", "cc"); \ +}) +#endif /* defined(__i386__) */ + +#endif /* defined(__i386__) || defined(__x86_64__) */ + +#endif /* _VMWGFX_MSG_X86_H */ |