From patchwork Thu Apr 28 13:11:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuji Ishikawa X-Patchwork-Id: 12830685 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 76A95C433EF for ; Thu, 28 Apr 2022 13:19:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Lk4PlVxB0W4YTOpAOwh/VtB2aBiLPJQStATGew9IldU=; b=Zu9uwITS8EuHpr cJFp8c6L5JkftjPjHkpEvlwnmMISyRjz9KQaRJuq+dvV7/4VQYF+pU/TImGkAZyHbL3dSpVHLS6XZ KM6rfmlkqmbKjxPqmAr09SXaQ6ktGBLFfBdxpdc1JpFy4OzKh6kb+Xh1LY3chAg8aN/MWZjORxpxj Sle+smwPkfexiQJeUeXFQolBK5mS3XVko60GBXsBy/NTJl7/JnVMws7K8xJ5YUQQFCLVto19jOnxc TaiWg+kPF2P804gL4gFhxy0/tB36YHQn0Y/uk3cocAd9/1rhLHjkPvlgY7UhDT4f5ih8mawA/I16v nonuqYDCnRRB7n6oVPGw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nk424-006xmh-9f; Thu, 28 Apr 2022 13:18:08 +0000 Received: from mo-csw1114.securemx.jp ([210.130.202.156] helo=mo-csw.securemx.jp) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nk40q-006xCp-Hv for linux-arm-kernel@lists.infradead.org; Thu, 28 Apr 2022 13:16:55 +0000 Received: by mo-csw.securemx.jp (mx-mo-csw1114) id 23SDGY2t008287; Thu, 28 Apr 2022 22:16:34 +0900 X-Iguazu-Qid: 2wGrMWgEdCUHF3269w X-Iguazu-QSIG: v=2; s=0; t=1651151794; q=2wGrMWgEdCUHF3269w; m=H4vxTdawM46Is6vT9+1VDOpDyLYbzVWfAdppRvox4IE= Received: from imx12-a.toshiba.co.jp (imx12-a.toshiba.co.jp [61.202.160.135]) by relay.securemx.jp (mx-mr1110) id 23SDGXLn030069 (version=TLSv1.2 cipher=AES128-GCM-SHA256 bits=128 verify=NOT); Thu, 28 Apr 2022 22:16:33 +0900 X-SA-MID: 3363561 From: Yuji Ishikawa To: Rob Herring , Nobuhiro Iwamatsu , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, yuji2.ishikawa@toshiba.co.jp Subject: [PATCH 2/4] soc: visconti: Add Toshiba Visconti image processing accelerator common source Date: Thu, 28 Apr 2022 22:11:26 +0900 X-TSB-HOP2: ON Message-Id: <20220428131128.5053-3-yuji2.ishikawa@toshiba.co.jp> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220428131128.5053-1-yuji2.ishikawa@toshiba.co.jp> References: <20220428131128.5053-1-yuji2.ishikawa@toshiba.co.jp> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220428_061652_883230_60E8BA22 X-CRM114-Status: GOOD ( 19.30 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This commit adds common definitions shared among image processing accelerator drivers for Toshiba Visconti SoCs. Signed-off-by: Yuji Ishikawa Reviewed-by: Nobuhiro Iwamatsu --- drivers/soc/Kconfig | 1 + drivers/soc/Makefile | 1 + drivers/soc/visconti/Kconfig | 1 + drivers/soc/visconti/Makefile | 6 +++ drivers/soc/visconti/ipa_common.c | 55 +++++++++++++++++++ drivers/soc/visconti/ipa_common.h | 18 +++++++ drivers/soc/visconti/uapi/ipa.h | 88 +++++++++++++++++++++++++++++++ 7 files changed, 170 insertions(+) create mode 100644 drivers/soc/visconti/Kconfig create mode 100644 drivers/soc/visconti/Makefile create mode 100644 drivers/soc/visconti/ipa_common.c create mode 100644 drivers/soc/visconti/ipa_common.h create mode 100644 drivers/soc/visconti/uapi/ipa.h diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig index e8a30c4c5..c99139aa8 100644 --- a/drivers/soc/Kconfig +++ b/drivers/soc/Kconfig @@ -22,6 +22,7 @@ source "drivers/soc/tegra/Kconfig" source "drivers/soc/ti/Kconfig" source "drivers/soc/ux500/Kconfig" source "drivers/soc/versatile/Kconfig" +source "drivers/soc/visconti/Kconfig" source "drivers/soc/xilinx/Kconfig" endmenu diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile index a05e9fbcd..455b993c2 100644 --- a/drivers/soc/Makefile +++ b/drivers/soc/Makefile @@ -28,4 +28,5 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/ obj-y += ti/ obj-$(CONFIG_ARCH_U8500) += ux500/ obj-$(CONFIG_PLAT_VERSATILE) += versatile/ +obj-$(CONFIG_ARCH_VISCONTI) += visconti/ obj-y += xilinx/ diff --git a/drivers/soc/visconti/Kconfig b/drivers/soc/visconti/Kconfig new file mode 100644 index 000000000..8b1378917 --- /dev/null +++ b/drivers/soc/visconti/Kconfig @@ -0,0 +1 @@ + diff --git a/drivers/soc/visconti/Makefile b/drivers/soc/visconti/Makefile new file mode 100644 index 000000000..8d710da08 --- /dev/null +++ b/drivers/soc/visconti/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the Visconti specific device drivers. +# + +obj-y += ipa_common.o diff --git a/drivers/soc/visconti/ipa_common.c b/drivers/soc/visconti/ipa_common.c new file mode 100644 index 000000000..6345f33c5 --- /dev/null +++ b/drivers/soc/visconti/ipa_common.c @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause +/* Toshiba Visconti Image Processing Accelerator Support + * + * (C) Copyright 2022 TOSHIBA CORPORATION + * (C) Copyright 2022 Toshiba Electronic Devices & Storage Corporation + */ + +#include "ipa_common.h" + +int ipa_attach_dmabuf(struct device *dev, int fd, struct dma_buf_attachment **a, + struct sg_table **s, dma_addr_t *addr, enum dma_data_direction dma_dir) +{ + struct dma_buf_attachment *attachment; + struct dma_buf *dmabuf; + struct sg_table *sgt; + int ret; + + dmabuf = dma_buf_get(fd); + if (IS_ERR(dmabuf)) { + dev_err(dev, "Invalid dmabuf FD\n"); + return PTR_ERR(dmabuf); + } + attachment = dma_buf_attach(dmabuf, dev); + + if (IS_ERR(attachment)) { + dev_err(dev, "Failed to attach dmabuf\n"); + ret = PTR_ERR(attachment); + goto err_put; + } + sgt = dma_buf_map_attachment(attachment, dma_dir); + if (IS_ERR(sgt)) { + dev_err(dev, "Failed to get dmabufs sg_table\n"); + ret = PTR_ERR(sgt); + goto err_detach; + } + if (sgt->nents != 1) { + dev_err(dev, "Sparse DMA region is unsupported\n"); + ret = -EINVAL; + goto err_unmap; + } + + *addr = sg_dma_address(sgt->sgl); + *a = attachment; + *s = sgt; + + return 0; + +err_unmap: + dma_buf_unmap_attachment(attachment, sgt, dma_dir); +err_detach: + dma_buf_detach(dmabuf, attachment); +err_put: + dma_buf_put(dmabuf); + return ret; +} diff --git a/drivers/soc/visconti/ipa_common.h b/drivers/soc/visconti/ipa_common.h new file mode 100644 index 000000000..786988c52 --- /dev/null +++ b/drivers/soc/visconti/ipa_common.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ +/* Toshiba Visconti Image Processing Accelerator Support + * + * (C) Copyright 2022 TOSHIBA CORPORATION + * (C) Copyright 2022 Toshiba Electronic Devices & Storage Corporation + */ + +#include +#include + +#define COHERENT_ADDRESS_BIT (0x400000000ULL) +#define IPA_POLL_EVENT_NONE (0) +#define IPA_POLL_EVENT_DONE (1) +#define IPA_POLL_EVENT_ERROR (2) +#define IPA_WAKEUP_RETRY_DELAY (300 * 1000) /*usec*/ + +int ipa_attach_dmabuf(struct device *dev, int fd, struct dma_buf_attachment **a, + struct sg_table **s, dma_addr_t *addr, enum dma_data_direction dma_dir); diff --git a/drivers/soc/visconti/uapi/ipa.h b/drivers/soc/visconti/uapi/ipa.h new file mode 100644 index 000000000..e5c919ea2 --- /dev/null +++ b/drivers/soc/visconti/uapi/ipa.h @@ -0,0 +1,88 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* Toshiba Visconti Image Processing Accelerator Support + * + * (C) Copyright 2022 TOSHIBA CORPORATION + * (C) Copyright 2022 Toshiba Electronic Devices & Storage Corporation + */ + +#ifndef _UAPI_LINUX_IPA_H +#define _UAPI_LINUX_IPA_H + +/** + * enum drv_ipa_state - state of Visconti IPA driver + * + * @DRV_IPA_STATE_IDLE: driver is idle + * @DRV_IPA_STATE_BUSY: device is busy + */ +enum drv_ipa_state { DRV_IPA_STATE_IDLE = 0, DRV_IPA_STATE_BUSY }; + +/** + * enum drv_ipa_buffer_direction - usage of buffer + * + * @DRV_IPA_DIR_BIDIRECTION: cpu writes/reads data + * @DRV_IPA_DIR_TO_DEVICE: cpu writes data + * @DRV_IPA_DIR_FROM_DEVICE: cpu reads data + * @DRV_IPA_DIR_NONE: cpu not access or non-coherent + */ +enum drv_ipa_buffer_direction { + DRV_IPA_DIR_BIDIRECTION = 0, + DRV_IPA_DIR_TO_DEVICE, + DRV_IPA_DIR_FROM_DEVICE, + DRV_IPA_DIR_NONE +}; + +/** + * struct drv_ipa_buffer_info - buffer information for Visconti IPA drivers + * + * @fd: file descriptor of Ion allocated heap + * @coherent: allocated via coherent bus or not + * @direction: buffer direction (to/from device) + * + * note: When the Ion heap is allocated wit ION_FLAG_CACHED, + * &struct drv_ipa_buffer_info.coherent should be true. + * Else, it should be false. + */ +struct drv_ipa_buffer_info { + u32 fd; + bool coherent; + enum drv_ipa_buffer_direction direction; +}; + +/** + * struct drv_ipa_addr - address structure for Visconti IPA drivers + * + * @buffer_index: array index of &struct drv_ipa_buffer_info + * @offset: offset from the top of Ion heap + */ +struct drv_ipa_addr { + u32 buffer_index : 4; + u32 offset : 28; +}; + +#define IPA_BUFFER_INDEX_MAX (16) +#define IPA_INVALID_ADDR \ + { \ + .buffer_index = 0xfu, .offset = 0xfffffffu \ + } + +static inline struct drv_ipa_addr drv_ipa_invalid_addr(void) +{ + struct drv_ipa_addr invalid_addr = IPA_INVALID_ADDR; + return invalid_addr; +} + +static inline bool drv_ipa_is_invalid_addr(struct drv_ipa_addr addr) +{ + struct drv_ipa_addr invalid_addr = IPA_INVALID_ADDR; + + if (addr.buffer_index == invalid_addr.buffer_index && addr.offset == invalid_addr.offset) { + return true; + } + return false; +} + +#define IOC_IPA_MAGIC 'I' +#define IOC_IPA_START _IO(IOC_IPA_MAGIC, 0) +#define IOC_IPA_GET_STATUS _IO(IOC_IPA_MAGIC, 1) + +#endif /* _UAPI_LINUX_IPA_H */