From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-600970-1517400276-2-6376276850073906858 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, RCVD_IN_DNSWL_MED -2.3, SPF_PASS -0.001, LANGUAGES enda, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='140.211.166.137', Host='smtp4.osuosl.org', Country='US', FromHeader='com', MailFrom='org' X-Spam-charsets: plain='us-ascii' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: driverdev-devel-bounces@linuxdriverproject.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1517400275; b=OyU9IT8pR0YYJ9wmfeyhNxTIq+Df76zIPdPzM6q9Nw1D2zk pgrxlOiw4fxq5XgqmOef3syFxcTizopzW+egiAWrs232pkCqpvnkHWc98PLqZgio ymF6HV0F3PGK1nWnlNlViAE94e0xWwSbv7MyEa4QJnQWViwl8xkO8EKZgkWQ6EVo N/jxscra7Tu2F3Agj2YzqCUbiYykJL8eIwFQ3Ck9FlO01J+7YyvZBk91Wn8dL/nl P+vwUoUJaVEwDcqbG8j9kCXfkzspW5lg2b76ieg7qZRkVyU3zPiIomk/TGq78jCz WZI6d1sTU7ljSEpGNLXGQXzphc6vEcXMj61ptUw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:subject:date:message-id:list-id :list-unsubscribe:list-archive:list-post:list-help :list-subscribe:cc:mime-version:content-type :content-transfer-encoding:sender; s=arctest; t=1517400275; bh=x OZDciFB2YKMcCQKXYpx28zT/CAr8k3fwgk9+njOQY0=; b=LSpe2yNhuHcdrMtuS 7F0HN7b4KZjHiMa6Ltjgx4SQ0npcjkCpIXj1uoLNmnxFz9zeWl2K1tguEyX8L0Tq H9hZlB1EhffQ/46TiKHTLKomeatvHdz28p1m8s4Y3re/0CiOpVY9uqgL2tFjb6xM 9I6oqMWEqAxbwN6y/PFODfSTfM7mvqwqzFa9Dgi8icnr4s40YhOn7EPlmRcdChK9 dcm/M825n4Sk59G82R7xCWYeCdaQB3WSBtuHBBLMEFpWvacrvpBTUyPbMpCMMMEA ku1ODARzhjHN8QM+u/S8V8H+th9oFKowChqREJF7QQwhk0t1oY3Zdl8akMLV6kNK LRjMg== ARC-Authentication-Results: i=1; mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=intel.com; iprev=pass policy.iprev=140.211.166.137 (smtp4.osuosl.org); spf=pass smtp.mailfrom=driverdev-devel-bounces@linuxdriverproject.org smtp.helo=fraxinus.osuosl.org; x-aligned-from=fail; x-ptr=fail x-ptr-helo=fraxinus.osuosl.org x-ptr-lookup=smtp4.osuosl.org; x-return-mx=pass smtp.domain=linuxdriverproject.org smtp.result=pass smtp_is_org_domain=yes header.domain=intel.com header.result=pass header_is_org_domain=yes; x-tls=pass version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128 Authentication-Results: mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=intel.com; iprev=pass policy.iprev=140.211.166.137 (smtp4.osuosl.org); spf=pass smtp.mailfrom=driverdev-devel-bounces@linuxdriverproject.org smtp.helo=fraxinus.osuosl.org; x-aligned-from=fail; x-ptr=fail x-ptr-helo=fraxinus.osuosl.org x-ptr-lookup=smtp4.osuosl.org; x-return-mx=pass smtp.domain=linuxdriverproject.org smtp.result=pass smtp_is_org_domain=yes header.domain=intel.com header.result=pass header_is_org_domain=yes; x-tls=pass version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128 X-Remote-Delivered-To: driverdev-devel@osuosl.org X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,440,1511856000"; d="scan'208";a="15836992" From: Alexey Skidanov To: devel@driverdev.osuosl.org, labbott@redhat.com, gregkh@linuxfoundation.org Subject: [PATCH v3] staging: android: ion: Add implementation of dma_buf_vmap and dma_buf_vunmap Date: Wed, 31 Jan 2018 14:03:42 +0200 Message-Id: <1517400222-2854-1-git-send-email-alexey.skidanov@intel.com> X-Mailer: git-send-email 2.7.4 X-BeenThere: driverdev-devel@linuxdriverproject.org X-Mailman-Version: 2.1.24 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexey Skidanov , tkjos@android.com, rve@android.com, linux-kernel@vger.kernel.org, maco@android.com, sumit.semwal@linaro.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Any driver may access shared buffers, created by ion, using dma_buf_vmap and dma_buf_vunmap dma-buf API that maps/unmaps previosuly allocated buffers into the kernel virtual address space. The implementation of these API is missing in the current ion implementation. Signed-off-by: Alexey Skidanov --- drivers/staging/android/ion/ion.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c index f480885..4f1dc7f 100644 --- a/drivers/staging/android/ion/ion.c +++ b/drivers/staging/android/ion/ion.c @@ -327,6 +327,17 @@ static void ion_dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long offset, { } +static void *ion_dma_buf_vmap(struct dma_buf *dmabuf) +{ + struct ion_buffer *buffer = dmabuf->priv; + + return buffer->vaddr; +} + +static void ion_dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr) +{ +} + static int ion_dma_buf_begin_cpu_access(struct dma_buf *dmabuf, enum dma_data_direction direction) { @@ -388,6 +399,8 @@ static const struct dma_buf_ops dma_buf_ops = { .unmap_atomic = ion_dma_buf_kunmap, .map = ion_dma_buf_kmap, .unmap = ion_dma_buf_kunmap, + .vmap = ion_dma_buf_vmap, + .vunmap = ion_dma_buf_vunmap }; int ion_alloc(size_t len, unsigned int heap_id_mask, unsigned int flags) -- 2.7.4 _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel