From patchwork Thu Dec 28 19:24:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Makhalov X-Patchwork-Id: 758689 Received: from mail-oa1-f52.google.com (mail-oa1-f52.google.com [209.85.160.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 842EF111A9 for ; Thu, 28 Dec 2023 19:24:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=broadcom.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="aVOExMz/" Received: by mail-oa1-f52.google.com with SMTP id 586e51a60fabf-2043e721daaso4060413fac.2 for ; Thu, 28 Dec 2023 11:24:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1703791486; x=1704396286; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=O9Dbt4U/NHONJYOO6LtAo8Oo/fKCNSARoDTA1T7Tz4I=; b=aVOExMz/D27d3Xg6LJZGQd8bbN6YLld4gPulHbo8ZS1LpJRDfJAIgRcmuenphiHVxh naGS88NTS8zSOoBF/suB8JJBFJwY0QxiAr+pnWBSOAcHeTtmin1eZ4lZFCF1kgOsvdcG B7jXY5XemSEmOpnTItOfryMOoxAPG83hlEoHk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703791486; x=1704396286; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=O9Dbt4U/NHONJYOO6LtAo8Oo/fKCNSARoDTA1T7Tz4I=; b=orNwM5lAnzWa6ZgGar+r0ZdVNreoFK6KiXBjSXBpPkeQgs1FVidJcq4XczQxuFv3F1 OYxAu7Z4SClknnyYW0c0/Rg949nTN2JQW97n5HImGh5vQAJ4Y3ElpfD3Lvq3+zqgYp82 GFi9r5kLcXPdhbMXYvPTY0U8SD7rU1NP8VS+UXL8K/Wa1S9OCUZT0Lz5xQJ/CiskTfXq EhzboI9g1w2JIGWYQJApnQ0eQ/xXlmrPGgm3p9NKqQuqSd8WYTOV+2nkfW1GHJCPiJT1 mXYQ2ZxZFnjBDq1w8QVoeLznhii/LO8Xq+YzQawO/uLWVo/ADKPF/KOpJB9cf3SzBNND 73Cg== X-Gm-Message-State: AOJu0YwunwAKxUZ4pam7hEePiIkEAjwrNIekl1+ua8v76xwf1sHlBJfZ RSX2p25KZImznEV5rL0vlDRNIwYbq4fF X-Google-Smtp-Source: AGHT+IEyiPNcl5z5luSHPiGHE5v6RVHVW9COlCEH5wbF5bqgi/3/klaqqZzSZZ5U52Xt0jfGA2FzYQ== X-Received: by 2002:a05:6870:14d1:b0:203:e9cc:486e with SMTP id l17-20020a05687014d100b00203e9cc486emr12157827oab.107.1703791486664; Thu, 28 Dec 2023 11:24:46 -0800 (PST) Received: from amakhalov-build-vm.eng.vmware.com ([128.177.82.146]) by smtp.gmail.com with ESMTPSA id k16-20020aa79990000000b006d9aa04574csm9522987pfh.52.2023.12.28.11.24.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Dec 2023 11:24:46 -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 v4 4/6] input/vmmouse: Use VMware hypercall API Date: Thu, 28 Dec 2023 11:24:19 -0800 Message-Id: <20231228192421.29894-5-alexey.makhalov@broadcom.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20231228192421.29894-1-alexey.makhalov@broadcom.com> References: <20231228192421.29894-1-alexey.makhalov@broadcom.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Alexey Makhalov Switch from VMWARE_HYPERCALL macro to vmware_hypercall API. Eliminate arch specific code. No functional changes intended. Signed-off-by: Alexey Makhalov Reviewed-by: Nadav Amit Reviewed-by: Zack Rusin Acked-by: Dmitry Torokhov --- drivers/input/mouse/vmmouse.c | 76 ++++++++++------------------------- 1 file changed, 22 insertions(+), 54 deletions(-) diff --git a/drivers/input/mouse/vmmouse.c b/drivers/input/mouse/vmmouse.c index ea9eff7c8099..fb1d986a6895 100644 --- a/drivers/input/mouse/vmmouse.c +++ b/drivers/input/mouse/vmmouse.c @@ -21,19 +21,16 @@ #include "psmouse.h" #include "vmmouse.h" -#define VMMOUSE_PROTO_MAGIC 0x564D5868U - /* * Main commands supported by the vmmouse hypervisor port. */ -#define VMMOUSE_PROTO_CMD_GETVERSION 10 -#define VMMOUSE_PROTO_CMD_ABSPOINTER_DATA 39 -#define VMMOUSE_PROTO_CMD_ABSPOINTER_STATUS 40 -#define VMMOUSE_PROTO_CMD_ABSPOINTER_COMMAND 41 -#define VMMOUSE_PROTO_CMD_ABSPOINTER_RESTRICT 86 +#define VMWARE_CMD_ABSPOINTER_DATA 39 +#define VMWARE_CMD_ABSPOINTER_STATUS 40 +#define VMWARE_CMD_ABSPOINTER_COMMAND 41 +#define VMWARE_CMD_ABSPOINTER_RESTRICT 86 /* - * Subcommands for VMMOUSE_PROTO_CMD_ABSPOINTER_COMMAND + * Subcommands for VMWARE_CMD_ABSPOINTER_COMMAND */ #define VMMOUSE_CMD_ENABLE 0x45414552U #define VMMOUSE_CMD_DISABLE 0x000000f5U @@ -76,28 +73,6 @@ struct vmmouse_data { char dev_name[128]; }; -/* - * Hypervisor-specific bi-directional communication channel - * implementing the vmmouse protocol. Should never execute on - * bare metal hardware. - */ -#define VMMOUSE_CMD(cmd, in1, out1, out2, out3, out4) \ -({ \ - unsigned long __dummy1, __dummy2; \ - __asm__ __volatile__ (VMWARE_HYPERCALL : \ - "=a"(out1), \ - "=b"(out2), \ - "=c"(out3), \ - "=d"(out4), \ - "=S"(__dummy1), \ - "=D"(__dummy2) : \ - "a"(VMMOUSE_PROTO_MAGIC), \ - "b"(in1), \ - "c"(VMMOUSE_PROTO_CMD_##cmd), \ - "d"(0) : \ - "memory"); \ -}) - /** * vmmouse_report_button - report button state on the correct input device * @@ -145,14 +120,12 @@ static psmouse_ret_t vmmouse_report_events(struct psmouse *psmouse) struct input_dev *abs_dev = priv->abs_dev; struct input_dev *pref_dev; u32 status, x, y, z; - u32 dummy1, dummy2, dummy3; unsigned int queue_length; unsigned int count = 255; while (count--) { /* See if we have motion data. */ - VMMOUSE_CMD(ABSPOINTER_STATUS, 0, - status, dummy1, dummy2, dummy3); + status = vmware_hypercall1(VMWARE_CMD_ABSPOINTER_STATUS, 0); if ((status & VMMOUSE_ERROR) == VMMOUSE_ERROR) { psmouse_err(psmouse, "failed to fetch status data\n"); /* @@ -172,7 +145,8 @@ static psmouse_ret_t vmmouse_report_events(struct psmouse *psmouse) } /* Now get it */ - VMMOUSE_CMD(ABSPOINTER_DATA, 4, status, x, y, z); + status = vmware_hypercall4(VMWARE_CMD_ABSPOINTER_DATA, 4, + &x, &y, &z); /* * And report what we've got. Prefer to report button @@ -247,14 +221,10 @@ static psmouse_ret_t vmmouse_process_byte(struct psmouse *psmouse) static void vmmouse_disable(struct psmouse *psmouse) { u32 status; - u32 dummy1, dummy2, dummy3, dummy4; - - VMMOUSE_CMD(ABSPOINTER_COMMAND, VMMOUSE_CMD_DISABLE, - dummy1, dummy2, dummy3, dummy4); - VMMOUSE_CMD(ABSPOINTER_STATUS, 0, - status, dummy1, dummy2, dummy3); + vmware_hypercall1(VMWARE_CMD_ABSPOINTER_COMMAND, VMMOUSE_CMD_DISABLE); + status = vmware_hypercall1(VMWARE_CMD_ABSPOINTER_STATUS, 0); if ((status & VMMOUSE_ERROR) != VMMOUSE_ERROR) psmouse_warn(psmouse, "failed to disable vmmouse device\n"); } @@ -271,26 +241,24 @@ static void vmmouse_disable(struct psmouse *psmouse) static int vmmouse_enable(struct psmouse *psmouse) { u32 status, version; - u32 dummy1, dummy2, dummy3, dummy4; /* * Try enabling the device. If successful, we should be able to * read valid version ID back from it. */ - VMMOUSE_CMD(ABSPOINTER_COMMAND, VMMOUSE_CMD_ENABLE, - dummy1, dummy2, dummy3, dummy4); + vmware_hypercall1(VMWARE_CMD_ABSPOINTER_COMMAND, VMMOUSE_CMD_ENABLE); /* * See if version ID can be retrieved. */ - VMMOUSE_CMD(ABSPOINTER_STATUS, 0, status, dummy1, dummy2, dummy3); + status = vmware_hypercall1(VMWARE_CMD_ABSPOINTER_STATUS, 0); if ((status & 0x0000ffff) == 0) { psmouse_dbg(psmouse, "empty flags - assuming no device\n"); return -ENXIO; } - VMMOUSE_CMD(ABSPOINTER_DATA, 1 /* single item */, - version, dummy1, dummy2, dummy3); + version = vmware_hypercall1(VMWARE_CMD_ABSPOINTER_DATA, + 1 /* single item */); if (version != VMMOUSE_VERSION_ID) { psmouse_dbg(psmouse, "Unexpected version value: %u vs %u\n", (unsigned) version, VMMOUSE_VERSION_ID); @@ -301,11 +269,11 @@ static int vmmouse_enable(struct psmouse *psmouse) /* * Restrict ioport access, if possible. */ - VMMOUSE_CMD(ABSPOINTER_RESTRICT, VMMOUSE_RESTRICT_CPL0, - dummy1, dummy2, dummy3, dummy4); + vmware_hypercall1(VMWARE_CMD_ABSPOINTER_RESTRICT, + VMMOUSE_RESTRICT_CPL0); - VMMOUSE_CMD(ABSPOINTER_COMMAND, VMMOUSE_CMD_REQUEST_ABSOLUTE, - dummy1, dummy2, dummy3, dummy4); + vmware_hypercall1(VMWARE_CMD_ABSPOINTER_COMMAND, + VMMOUSE_CMD_REQUEST_ABSOLUTE); return 0; } @@ -342,7 +310,7 @@ static bool vmmouse_check_hypervisor(void) */ int vmmouse_detect(struct psmouse *psmouse, bool set_properties) { - u32 response, version, dummy1, dummy2; + u32 response, version, type; if (!vmmouse_check_hypervisor()) { psmouse_dbg(psmouse, @@ -351,9 +319,9 @@ int vmmouse_detect(struct psmouse *psmouse, bool set_properties) } /* Check if the device is present */ - response = ~VMMOUSE_PROTO_MAGIC; - VMMOUSE_CMD(GETVERSION, 0, version, response, dummy1, dummy2); - if (response != VMMOUSE_PROTO_MAGIC || version == 0xffffffffU) + response = ~VMWARE_HYPERVISOR_MAGIC; + version = vmware_hypercall3(VMWARE_CMD_GETVERSION, 0, &response, &type); + if (response != VMWARE_HYPERVISOR_MAGIC || version == 0xffffffffU) return -ENXIO; if (set_properties) {