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Thu, 07 Mar 2024 13:30:10 -0800 (PST) Received: from amakhalov-build-vm.eng.vmware.com ([64.186.27.43]) by smtp.gmail.com with ESMTPSA id y12-20020a17090abd0c00b00299db19a81asm1991021pjr.56.2024.03.07.13.30.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Mar 2024 13:30:10 -0800 (PST) From: Alexey Makhalov To: linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, bp@alien8.de, hpa@zytor.com, dave.hansen@linux.intel.com, mingo@redhat.com, tglx@linutronix.de Cc: x86@kernel.org, netdev@vger.kernel.org, richardcochran@gmail.com, linux-input@vger.kernel.org, dmitry.torokhov@gmail.com, zackr@vmware.com, linux-graphics-maintainer@vmware.com, pv-drivers@vmware.com, namit@vmware.com, timothym@vmware.com, akaher@vmware.com, jsipek@vmware.com, dri-devel@lists.freedesktop.org, daniel@ffwll.ch, airlied@gmail.com, tzimmermann@suse.de, mripard@kernel.org, maarten.lankhorst@linux.intel.com, horms@kernel.org, kirill.shutemov@linux.intel.com Subject: [PATCH v7 5/7] drm/vmwgfx: Use VMware hypercall API Date: Thu, 7 Mar 2024 13:29:47 -0800 Message-Id: <20240307212949.4166120-6-alexey.makhalov@broadcom.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20240307212949.4166120-1-alexey.makhalov@broadcom.com> References: <20240307212949.4166120-1-alexey.makhalov@broadcom.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Alexey Makhalov 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: Alexey Makhalov Reviewed-by: Nadav Amit Reviewed-by: Zack Rusin --- drivers/gpu/drm/vmwgfx/vmwgfx_msg.c | 173 +++++++------------ drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h | 197 +++++++++++++++------- drivers/gpu/drm/vmwgfx/vmwgfx_msg_x86.h | 187 -------------------- 3 files changed, 197 insertions(+), 360 deletions(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c b/drivers/gpu/drm/vmwgfx/v= mwgfx_msg.c index 2651fe0ef518..1f15990d3934 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c @@ -48,8 +48,6 @@ =20 #define RETRIES 3 =20 -#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[MKSST= AT_KERN_COUNT][2] =3D */ static int vmw_open_channel(struct rpc_channel *channel, unsigned int prot= ocol) { - unsigned long eax, ebx, ecx, edx, si =3D 0, di =3D 0; + u32 ecx, edx, esi, edi; =20 - 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); =20 if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) =3D=3D 0) return -EINVAL; =20 channel->channel_id =3D HIGH_WORD(edx); - channel->cookie_high =3D si; - channel->cookie_low =3D di; + channel->cookie_high =3D esi; + channel->cookie_low =3D edi; =20 return 0; } @@ -133,17 +129,13 @@ static int vmw_open_channel(struct rpc_channel *chann= el, 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 =3D channel->cookie_high; - di =3D channel->cookie_low; + u32 ecx; =20 - 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); =20 if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) =3D=3D 0) return -EINVAL; @@ -163,24 +155,18 @@ static int vmw_close_channel(struct rpc_channel *chan= nel) 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 =3D strlen(msg); =20 /* HB port can't access encrypted memory. */ if (hb && !cc_platform_has(CC_ATTR_MEM_ENCRYPT)) { - unsigned long bp =3D channel->cookie_high; - u32 channel_id =3D (channel->channel_id << 16); - - si =3D (uintptr_t) msg; - di =3D 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); =20 return ebx; } @@ -194,14 +180,13 @@ static unsigned long vmw_port_hb_out(struct rpc_chann= el *channel, memcpy(&word, msg, bytes); msg_len -=3D bytes; msg +=3D bytes; - si =3D channel->cookie_high; - di =3D 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); } =20 return ecx; @@ -220,22 +205,17 @@ static unsigned long vmw_port_hb_out(struct rpc_chann= el *channel, static unsigned long vmw_port_hb_in(struct rpc_channel *channel, char *rep= ly, unsigned long reply_len, bool hb) { - unsigned long si, di, eax, ebx, ecx, edx; + u32 ebx, ecx, edx; =20 /* HB port can't access encrypted memory */ if (hb && !cc_platform_has(CC_ATTR_MEM_ENCRYPT)) { - unsigned long bp =3D channel->cookie_low; - u32 channel_id =3D (channel->channel_id << 16); - - si =3D channel->cookie_high; - di =3D (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); =20 return ebx; } @@ -245,14 +225,13 @@ static unsigned long vmw_port_hb_in(struct rpc_channe= l *channel, char *reply, while (reply_len) { unsigned int bytes =3D min_t(unsigned long, reply_len, 4); =20 - si =3D channel->cookie_high; - di =3D 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); =20 if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) =3D=3D 0) break; @@ -276,22 +255,18 @@ static unsigned long vmw_port_hb_in(struct rpc_channe= l *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 =3D strlen(msg); int retries =3D 0; =20 while (retries < RETRIES) { retries++; =20 - /* Set up additional parameters */ - si =3D channel->cookie_high; - di =3D 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); =20 if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) =3D=3D 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 =3D 0; @@ -341,15 +316,11 @@ static int vmw_recv_msg(struct rpc_channel *channel, = void **msg, while (retries < RETRIES) { retries++; =20 - /* Set up additional parameters */ - si =3D channel->cookie_high; - di =3D 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); =20 if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) =3D=3D 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, =20 reply[reply_len] =3D '\0'; =20 - - /* Ack buffer */ - si =3D channel->cookie_high; - di =3D 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); =20 if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) =3D=3D 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 =3D 0, di =3D 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); } =20 /** @@ -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 =3D 0, di =3D 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); } =20 /** @@ -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 =3D 0, di =3D 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); } =20 #if IS_ENABLED(CONFIG_DRM_VMWGFX_MKSSTATS) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h b/drivers/gpu/drm/vm= wgfx/vmwgfx_msg_arm64.h index 4f40167ad61f..29bd0af83038 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg_arm64.h @@ -34,6 +34,8 @@ #define VMWARE_HYPERVISOR_HB BIT(0) #define VMWARE_HYPERVISOR_OUT BIT(1) =20 +#define VMWARE_HYPERVISOR_MAGIC 0x564D5868 + #define X86_IO_MAGIC 0x86 =20 #define X86_IO_W7_SIZE_SHIFT 0 @@ -45,86 +47,159 @@ #define X86_IO_W7_IMM_SHIFT 5 #define X86_IO_W7_IMM_MASK (0xff << X86_IO_W7_IMM_SHIFT) =20 -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") =3D magic; - register u64 x1 asm("x1") =3D in_ebx; + register u64 x0 asm("x0") =3D VMWARE_HYPERVISOR_MAGIC; + register u64 x1 asm("x1") =3D in1; register u64 x2 asm("x2") =3D cmd; - register u64 x3 asm("x3") =3D flags | VMWARE_HYPERVISOR_PORT; - register u64 x4 asm("x4") =3D in_si; - register u64 x5 asm("x5") =3D in_di; + register u64 x3 asm("x3") =3D VMWARE_HYPERVISOR_PORT; + register u64 x7 asm("x7") =3D ((u64)X86_IO_MAGIC << 32) | + X86_IO_W7_WITH | + X86_IO_W7_DIR | + (2 << X86_IO_W7_SIZE_SHIFT); =20 + 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, uint32_t *out2) +{ + register u64 x0 asm("x0") =3D VMWARE_HYPERVISOR_MAGIC; + register u64 x1 asm("x1") =3D in1; + register u64 x2 asm("x2") =3D cmd; + register u64 x3 asm("x3") =3D in3 | VMWARE_HYPERVISOR_PORT; + register u64 x4 asm("x4") =3D in4; + register u64 x5 asm("x5") =3D in5; register u64 x7 asm("x7") =3D ((u64)X86_IO_MAGIC << 32) | X86_IO_W7_WITH | X86_IO_W7_DIR | (2 << X86_IO_W7_SIZE_SHIFT); =20 - asm volatile("mrs xzr, mdccsr_el0 \n\t" - : "+r"(x0), "+r"(x1), "+r"(x2), - "+r"(x3), "+r"(x4), "+r"(x5) - : "r"(x7) - :); - *eax =3D x0; - *ebx =3D x1; - *ecx =3D x2; - *edx =3D x3; - *si =3D x4; - *di =3D x5; + asm_inline volatile ( + "mrs xzr, mdccsr_el0; " + : "+r" (x0), "+r" (x2) + : "r" (x1), "r" (x3), "r" (x4), "r" (x5), "r" (x7) + : "memory"); + + *out2 =3D x2; + return x0; } =20 -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, uint32_t *out2, + uint32_t *out3, uint32_t *out4, + uint32_t *out5) { - register u64 x0 asm("x0") =3D magic; + register u64 x0 asm("x0") =3D VMWARE_HYPERVISOR_MAGIC; + register u64 x1 asm("x1") =3D in1; + register u64 x2 asm("x2") =3D cmd; + register u64 x3 asm("x3") =3D in3 | VMWARE_HYPERVISOR_PORT; + register u64 x4 asm("x4"); + register u64 x5 asm("x5"); + register u64 x7 asm("x7") =3D ((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), "=3Dr" (x4), "=3Dr" (x5) + : "r" (x1), "r" (x7) + : "memory"); + + *out2 =3D x2; + *out3 =3D x3; + *out4 =3D x4; + *out5 =3D x5; + return x0; +} + +static inline +unsigned long vmware_hypercall7(unsigned long cmd, unsigned long in1, + unsigned long in3, unsigned long in4, + unsigned long in5, uint32_t *out1, + uint32_t *out2, uint32_t *out3) +{ + register u64 x0 asm("x0") =3D VMWARE_HYPERVISOR_MAGIC; + register u64 x1 asm("x1") =3D in1; + register u64 x2 asm("x2") =3D cmd; + register u64 x3 asm("x3") =3D in3 | VMWARE_HYPERVISOR_PORT; + register u64 x4 asm("x4") =3D in4; + register u64 x5 asm("x5") =3D in5; + register u64 x7 asm("x7") =3D ((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 =3D x1; + *out2 =3D x2; + *out3 =3D 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, + uint32_t *out1, int dir) +{ + register u64 x0 asm("x0") =3D VMWARE_HYPERVISOR_MAGIC; register u64 x1 asm("x1") =3D cmd; - register u64 x2 asm("x2") =3D in_ecx; - register u64 x3 asm("x3") =3D flags | VMWARE_HYPERVISOR_PORT_HB; - register u64 x4 asm("x4") =3D in_si; - register u64 x5 asm("x5") =3D in_di; - register u64 x6 asm("x6") =3D bp; + register u64 x2 asm("x2") =3D in2; + register u64 x3 asm("x3") =3D in3 | VMWARE_HYPERVISOR_PORT_HB; + register u64 x4 asm("x4") =3D in4; + register u64 x5 asm("x5") =3D in5; + register u64 x6 asm("x6") =3D in6; register u64 x7 asm("x7") =3D ((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 =3D x0; - *ebx =3D x1; - *ecx =3D x2; - *edx =3D x3; - *si =3D x4; - *di =3D x5; -} + dir; =20 -#define VMW_PORT(cmd, in_ebx, in_si, in_di, flags, magic, eax, ebx, ecx, e= dx, \ - 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"); =20 -#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 =3D x1; + return x0; +} =20 -#define VMW_PORT_HB_IN(cmd, in_ecx, in_si, in_di, flags, magic, bp, eax, e= bx, \ - 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, + uint32_t *out1) +{ + return vmware_hypercall_hb(cmd, in2, in3, in4, in5, in6, out1, 0); +} =20 +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, + uint32_t *out1) +{ + return vmware_hypercall_hb(cmd, in2, in3, in4, in5, in6, out1, + X86_IO_W7_DIR); +} #endif =20 #endif /* _VMWGFX_MSG_ARM64_H */ diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg_x86.h b/drivers/gpu/drm/vmwg= fx/vmwgfx_msg_x86.h index e040ee21ea1a..13304d34cc6e 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_msg_x86.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg_x86.h @@ -37,193 +37,6 @@ =20 #include =20 -/** - * 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 initializ= ed. - * - * @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 : \ - "=3Da"(eax), \ - "=3Db"(ebx), \ - "=3Dc"(ecx), \ - "=3Dd"(edx), \ - "=3DS"(si), \ - "=3DD"(di) : \ - [port] "i" (VMWARE_HYPERVISOR_PORT), \ - [mode] "m" (vmware_hypercall_mode), \ - "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;" \ - "rep outsb;" \ - "pop %%rbp;" \ - UNWIND_HINT_RESTORE : \ - "=3Da"(eax), \ - "=3Db"(ebx), \ - "=3Dc"(ecx), \ - "=3Dd"(edx), \ - "=3DS"(si), \ - "=3DD"(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;" \ - "rep insb;" \ - "pop %%rbp;" \ - UNWIND_HINT_RESTORE : \ - "=3Da"(eax), \ - "=3Db"(ebx), \ - "=3Dc"(ecx), \ - "=3Dd"(edx), \ - "=3DS"(si), \ - "=3DD"(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;" : \ - "=3Da"(eax), \ - "=3Db"(ebx), \ - "=3Dc"(ecx), \ - "=3Dd"(edx), \ - "=3DS"(si), \ - "=3DD"(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;" : \ - "=3Da"(eax), \ - "=3Db"(ebx), \ - "=3Dc"(ecx), \ - "=3Dd"(edx), \ - "=3DS"(si), \ - "=3DD"(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__) */ =20 #endif /* _VMWGFX_MSG_X86_H */ --=20 2.39.0