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Commit 90328eaa authored by Alexey Makhalov's avatar Alexey Makhalov Committed by Borislav Petkov (AMD)
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drm/vmwgfx: Use VMware hypercall API 

Switch from VMWARE_HYPERCALL macro to vmware_hypercall API. Eliminate arch
specific code.

drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h: implement arm64 variant
of vmware_hypercall. And keep it here until introduction of ARM64
VMWare hypervisor interface.
Signed-off-by: default avatarAlexey Makhalov <alexey.makhalov@broadcom.com>
Signed-off-by: default avatarBorislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20240613191650.9913-5-alexey.makhalov@broadcom.com
parent f0db90b4
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Showing with 196 additions and 358 deletions
drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
View file @ 90328eaa
......@@ -48,8 +48,6 @@
#define RETRIES 3
#define VMW_HYPERVISOR_MAGIC 0x564D5868
#define VMW_PORT_CMD_MSG 30
#define VMW_PORT_CMD_HB_MSG 0
#define VMW_PORT_CMD_OPEN_CHANNEL (MSG_TYPE_OPEN << 16 | VMW_PORT_CMD_MSG)
......@@ -104,20 +102,18 @@ static const char* const mksstat_kern_name_desc[MKSSTAT_KERN_COUNT][2] =
*/
static int vmw_open_channel(struct rpc_channel *channel, unsigned int protocol)
{
unsigned long eax, ebx, ecx, edx, si = 0, di = 0;
u32 ecx, edx, esi, edi;
VMW_PORT(VMW_PORT_CMD_OPEN_CHANNEL,
(protocol | GUESTMSG_FLAG_COOKIE), si, di,
0,
VMW_HYPERVISOR_MAGIC,
eax, ebx, ecx, edx, si, di);
vmware_hypercall6(VMW_PORT_CMD_OPEN_CHANNEL,
(protocol | GUESTMSG_FLAG_COOKIE), 0,
&ecx, &edx, &esi, &edi);
if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) == 0)
return -EINVAL;
channel->channel_id = HIGH_WORD(edx);
channel->cookie_high = si;
channel->cookie_low = di;
channel->cookie_high = esi;
channel->cookie_low = edi;
return 0;
}
......@@ -133,17 +129,13 @@ static int vmw_open_channel(struct rpc_channel *channel, unsigned int protocol)
*/
static int vmw_close_channel(struct rpc_channel *channel)
{
unsigned long eax, ebx, ecx, edx, si, di;
/* Set up additional parameters */
si = channel->cookie_high;
di = channel->cookie_low;
u32 ecx;
VMW_PORT(VMW_PORT_CMD_CLOSE_CHANNEL,
0, si, di,
channel->channel_id << 16,
VMW_HYPERVISOR_MAGIC,
eax, ebx, ecx, edx, si, di);
vmware_hypercall5(VMW_PORT_CMD_CLOSE_CHANNEL,
0, channel->channel_id << 16,
channel->cookie_high,
channel->cookie_low,
&ecx);
if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) == 0)
return -EINVAL;
......@@ -163,24 +155,18 @@ static int vmw_close_channel(struct rpc_channel *channel)
static unsigned long vmw_port_hb_out(struct rpc_channel *channel,
const char *msg, bool hb)
{
unsigned long si, di, eax, ebx, ecx, edx;
u32 ebx, ecx;
unsigned long msg_len = strlen(msg);
/* HB port can't access encrypted memory. */
if (hb && !cc_platform_has(CC_ATTR_MEM_ENCRYPT)) {
unsigned long bp = channel->cookie_high;
u32 channel_id = (channel->channel_id << 16);
si = (uintptr_t) msg;
di = channel->cookie_low;
VMW_PORT_HB_OUT(
vmware_hypercall_hb_out(
(MESSAGE_STATUS_SUCCESS << 16) | VMW_PORT_CMD_HB_MSG,
msg_len, si, di,
VMWARE_HYPERVISOR_HB | channel_id |
VMWARE_HYPERVISOR_OUT,
VMW_HYPERVISOR_MAGIC, bp,
eax, ebx, ecx, edx, si, di);
msg_len,
channel->channel_id << 16,
(uintptr_t) msg, channel->cookie_low,
channel->cookie_high,
&ebx);
return ebx;
}
......@@ -194,14 +180,13 @@ static unsigned long vmw_port_hb_out(struct rpc_channel *channel,
memcpy(&word, msg, bytes);
msg_len -= bytes;
msg += bytes;
si = channel->cookie_high;
di = channel->cookie_low;
VMW_PORT(VMW_PORT_CMD_MSG | (MSG_TYPE_SENDPAYLOAD << 16),
word, si, di,
channel->channel_id << 16,
VMW_HYPERVISOR_MAGIC,
eax, ebx, ecx, edx, si, di);
vmware_hypercall5(VMW_PORT_CMD_MSG |
(MSG_TYPE_SENDPAYLOAD << 16),
word, channel->channel_id << 16,
channel->cookie_high,
channel->cookie_low,
&ecx);
}
return ecx;
......@@ -220,22 +205,17 @@ static unsigned long vmw_port_hb_out(struct rpc_channel *channel,
static unsigned long vmw_port_hb_in(struct rpc_channel *channel, char *reply,
unsigned long reply_len, bool hb)
{
unsigned long si, di, eax, ebx, ecx, edx;
u32 ebx, ecx, edx;
/* HB port can't access encrypted memory */
if (hb && !cc_platform_has(CC_ATTR_MEM_ENCRYPT)) {
unsigned long bp = channel->cookie_low;
u32 channel_id = (channel->channel_id << 16);
si = channel->cookie_high;
di = (uintptr_t) reply;
VMW_PORT_HB_IN(
vmware_hypercall_hb_in(
(MESSAGE_STATUS_SUCCESS << 16) | VMW_PORT_CMD_HB_MSG,
reply_len, si, di,
VMWARE_HYPERVISOR_HB | channel_id,
VMW_HYPERVISOR_MAGIC, bp,
eax, ebx, ecx, edx, si, di);
reply_len,
channel->channel_id << 16,
channel->cookie_high,
(uintptr_t) reply, channel->cookie_low,
&ebx);
return ebx;
}
......@@ -245,14 +225,13 @@ static unsigned long vmw_port_hb_in(struct rpc_channel *channel, char *reply,
while (reply_len) {
unsigned int bytes = min_t(unsigned long, reply_len, 4);
si = channel->cookie_high;
di = channel->cookie_low;
VMW_PORT(VMW_PORT_CMD_MSG | (MSG_TYPE_RECVPAYLOAD << 16),
MESSAGE_STATUS_SUCCESS, si, di,
channel->channel_id << 16,
VMW_HYPERVISOR_MAGIC,
eax, ebx, ecx, edx, si, di);
vmware_hypercall7(VMW_PORT_CMD_MSG |
(MSG_TYPE_RECVPAYLOAD << 16),
MESSAGE_STATUS_SUCCESS,
channel->channel_id << 16,
channel->cookie_high,
channel->cookie_low,
&ebx, &ecx, &edx);
if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) == 0)
break;
......@@ -276,22 +255,18 @@ static unsigned long vmw_port_hb_in(struct rpc_channel *channel, char *reply,
*/
static int vmw_send_msg(struct rpc_channel *channel, const char *msg)
{
unsigned long eax, ebx, ecx, edx, si, di;
u32 ebx, ecx;
size_t msg_len = strlen(msg);
int retries = 0;
while (retries < RETRIES) {
retries++;
/* Set up additional parameters */
si = channel->cookie_high;
di = channel->cookie_low;
VMW_PORT(VMW_PORT_CMD_SENDSIZE,
msg_len, si, di,
channel->channel_id << 16,
VMW_HYPERVISOR_MAGIC,
eax, ebx, ecx, edx, si, di);
vmware_hypercall5(VMW_PORT_CMD_SENDSIZE,
msg_len, channel->channel_id << 16,
channel->cookie_high,
channel->cookie_low,
&ecx);
if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) == 0) {
/* Expected success. Give up. */
......@@ -329,7 +304,7 @@ STACK_FRAME_NON_STANDARD(vmw_send_msg);
static int vmw_recv_msg(struct rpc_channel *channel, void **msg,
size_t *msg_len)
{
unsigned long eax, ebx, ecx, edx, si, di;
u32 ebx, ecx, edx;
char *reply;
size_t reply_len;
int retries = 0;
......@@ -341,15 +316,11 @@ static int vmw_recv_msg(struct rpc_channel *channel, void **msg,
while (retries < RETRIES) {
retries++;
/* Set up additional parameters */
si = channel->cookie_high;
di = channel->cookie_low;
VMW_PORT(VMW_PORT_CMD_RECVSIZE,
0, si, di,
channel->channel_id << 16,
VMW_HYPERVISOR_MAGIC,
eax, ebx, ecx, edx, si, di);
vmware_hypercall7(VMW_PORT_CMD_RECVSIZE,
0, channel->channel_id << 16,
channel->cookie_high,
channel->cookie_low,
&ebx, &ecx, &edx);
if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) == 0) {
DRM_ERROR("Failed to get reply size for host message.\n");
......@@ -384,16 +355,12 @@ static int vmw_recv_msg(struct rpc_channel *channel, void **msg,
reply[reply_len] = '\0';
/* Ack buffer */
si = channel->cookie_high;
di = channel->cookie_low;
VMW_PORT(VMW_PORT_CMD_RECVSTATUS,
MESSAGE_STATUS_SUCCESS, si, di,
channel->channel_id << 16,
VMW_HYPERVISOR_MAGIC,
eax, ebx, ecx, edx, si, di);
vmware_hypercall5(VMW_PORT_CMD_RECVSTATUS,
MESSAGE_STATUS_SUCCESS,
channel->channel_id << 16,
channel->cookie_high,
channel->cookie_low,
&ecx);
if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) == 0) {
kfree(reply);
......@@ -652,13 +619,7 @@ static inline void reset_ppn_array(PPN64 *arr, size_t size)
*/
static inline void hypervisor_ppn_reset_all(void)
{
unsigned long eax, ebx, ecx, edx, si = 0, di = 0;
VMW_PORT(VMW_PORT_CMD_MKSGS_RESET,
0, si, di,
0,
VMW_HYPERVISOR_MAGIC,
eax, ebx, ecx, edx, si, di);
vmware_hypercall1(VMW_PORT_CMD_MKSGS_RESET, 0);
}
/**
......@@ -669,13 +630,7 @@ static inline void hypervisor_ppn_reset_all(void)
*/
static inline void hypervisor_ppn_add(PPN64 pfn)
{
unsigned long eax, ebx, ecx, edx, si = 0, di = 0;
VMW_PORT(VMW_PORT_CMD_MKSGS_ADD_PPN,
(unsigned long)pfn, si, di,
0,
VMW_HYPERVISOR_MAGIC,
eax, ebx, ecx, edx, si, di);
vmware_hypercall1(VMW_PORT_CMD_MKSGS_ADD_PPN, (unsigned long)pfn);
}
/**
......@@ -686,13 +641,7 @@ static inline void hypervisor_ppn_add(PPN64 pfn)
*/
static inline void hypervisor_ppn_remove(PPN64 pfn)
{
unsigned long eax, ebx, ecx, edx, si = 0, di = 0;
VMW_PORT(VMW_PORT_CMD_MKSGS_REMOVE_PPN,
(unsigned long)pfn, si, di,
0,
VMW_HYPERVISOR_MAGIC,
eax, ebx, ecx, edx, si, di);
vmware_hypercall1(VMW_PORT_CMD_MKSGS_REMOVE_PPN, (unsigned long)pfn);
}
#if IS_ENABLED(CONFIG_DRM_VMWGFX_MKSSTATS)
......
drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h
View file @ 90328eaa
......@@ -34,6 +34,8 @@
#define VMWARE_HYPERVISOR_HB BIT(0)
#define VMWARE_HYPERVISOR_OUT BIT(1)
#define VMWARE_HYPERVISOR_MAGIC 0x564D5868
#define X86_IO_MAGIC 0x86
#define X86_IO_W7_SIZE_SHIFT 0
......@@ -45,86 +47,158 @@
#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)
static inline
unsigned long vmware_hypercall1(unsigned long cmd, unsigned long in1)
{
register u64 x0 asm("x0") = magic;
register u64 x1 asm("x1") = in_ebx;
register u64 x0 asm("x0") = VMWARE_HYPERVISOR_MAGIC;
register u64 x1 asm("x1") = in1;
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 x3 asm("x3") = VMWARE_HYPERVISOR_PORT;
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_inline volatile (
"mrs xzr, mdccsr_el0; "
: "+r" (x0)
: "r" (x1), "r" (x2), "r" (x3), "r" (x7)
: "memory");
return x0;
}
static inline
unsigned long vmware_hypercall5(unsigned long cmd, unsigned long in1,
unsigned long in3, unsigned long in4,
unsigned long in5, u32 *out2)
{
register u64 x0 asm("x0") = VMWARE_HYPERVISOR_MAGIC;
register u64 x1 asm("x1") = in1;
register u64 x2 asm("x2") = cmd;
register u64 x3 asm("x3") = in3 | VMWARE_HYPERVISOR_PORT;
register u64 x4 asm("x4") = in4;
register u64 x5 asm("x5") = in5;
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;
asm_inline volatile (
"mrs xzr, mdccsr_el0; "
: "+r" (x0), "+r" (x2)
: "r" (x1), "r" (x3), "r" (x4), "r" (x5), "r" (x7)
: "memory");
*out2 = x2;
return x0;
}
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)
static inline
unsigned long vmware_hypercall6(unsigned long cmd, unsigned long in1,
unsigned long in3, u32 *out2,
u32 *out3, u32 *out4, u32 *out5)
{
register u64 x0 asm("x0") = magic;
register u64 x0 asm("x0") = VMWARE_HYPERVISOR_MAGIC;
register u64 x1 asm("x1") = in1;
register u64 x2 asm("x2") = cmd;
register u64 x3 asm("x3") = in3 | VMWARE_HYPERVISOR_PORT;
register u64 x4 asm("x4");
register u64 x5 asm("x5");
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_inline volatile (
"mrs xzr, mdccsr_el0; "
: "+r" (x0), "+r" (x2), "+r" (x3), "=r" (x4), "=r" (x5)
: "r" (x1), "r" (x7)
: "memory");
*out2 = x2;
*out3 = x3;
*out4 = x4;
*out5 = x5;
return x0;
}
static inline
unsigned long vmware_hypercall7(unsigned long cmd, unsigned long in1,
unsigned long in3, unsigned long in4,
unsigned long in5, u32 *out1,
u32 *out2, u32 *out3)
{
register u64 x0 asm("x0") = VMWARE_HYPERVISOR_MAGIC;
register u64 x1 asm("x1") = in1;
register u64 x2 asm("x2") = cmd;
register u64 x3 asm("x3") = in3 | VMWARE_HYPERVISOR_PORT;
register u64 x4 asm("x4") = in4;
register u64 x5 asm("x5") = in5;
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_inline volatile (
"mrs xzr, mdccsr_el0; "
: "+r" (x0), "+r" (x1), "+r" (x2), "+r" (x3)
: "r" (x4), "r" (x5), "r" (x7)
: "memory");
*out1 = x1;
*out2 = x2;
*out3 = x3;
return x0;
}
static inline
unsigned long vmware_hypercall_hb(unsigned long cmd, unsigned long in2,
unsigned long in3, unsigned long in4,
unsigned long in5, unsigned long in6,
u32 *out1, int dir)
{
register u64 x0 asm("x0") = VMWARE_HYPERVISOR_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 x2 asm("x2") = in2;
register u64 x3 asm("x3") = in3 | VMWARE_HYPERVISOR_PORT_HB;
register u64 x4 asm("x4") = in4;
register u64 x5 asm("x5") = in5;
register u64 x6 asm("x6") = in6;
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;
}
dir;
#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)
asm_inline volatile (
"mrs xzr, mdccsr_el0; "
: "+r" (x0), "+r" (x1)
: "r" (x2), "r" (x3), "r" (x4), "r" (x5),
"r" (x6), "r" (x7)
: "memory");
#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)
*out1 = x1;
return x0;
}
#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)
static inline
unsigned long vmware_hypercall_hb_out(unsigned long cmd, unsigned long in2,
unsigned long in3, unsigned long in4,
unsigned long in5, unsigned long in6,
u32 *out1)
{
return vmware_hypercall_hb(cmd, in2, in3, in4, in5, in6, out1, 0);
}
static inline
unsigned long vmware_hypercall_hb_in(unsigned long cmd, unsigned long in2,
unsigned long in3, unsigned long in4,
unsigned long in5, unsigned long in6,
u32 *out1)
{
return vmware_hypercall_hb(cmd, in2, in3, in4, in5, in6, out1,
X86_IO_W7_DIR);
}
#endif
#endif /* _VMWGFX_MSG_ARM64_H */
drivers/gpu/drm/vmwgfx/vmwgfx_msg_x86.h
View file @ 90328eaa
......@@ -37,191 +37,6 @@
#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 ( \
UNWIND_HINT_SAVE \
"push %%rbp;" \
UNWIND_HINT_UNDEFINED \
"mov %12, %%rbp;" \
VMWARE_HYPERCALL_HB_OUT \
"pop %%rbp;" \
UNWIND_HINT_RESTORE : \
"=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 ( \
UNWIND_HINT_SAVE \
"push %%rbp;" \
UNWIND_HINT_UNDEFINED \
"mov %12, %%rbp;" \
VMWARE_HYPERCALL_HB_IN \
"pop %%rbp;" \
UNWIND_HINT_RESTORE : \
"=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 */
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