From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82928C04AB4 for ; Tue, 14 May 2019 14:38:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5EBEB2147A for ; Tue, 14 May 2019 14:38:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726349AbfENOiM (ORCPT ); Tue, 14 May 2019 10:38:12 -0400 Received: from inva021.nxp.com ([92.121.34.21]:56938 "EHLO inva021.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725854AbfENOiM (ORCPT ); Tue, 14 May 2019 10:38:12 -0400 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id B83F0200030; Tue, 14 May 2019 16:38:10 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id AC05220022E; Tue, 14 May 2019 16:38:10 +0200 (CEST) Received: from fsr-ub1864-101.ea.freescale.net (fsr-ub1864-101.ea.freescale.net [10.171.82.13]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id F37B82061C; Tue, 14 May 2019 16:38:09 +0200 (CEST) From: laurentiu.tudor@nxp.com To: hch@lst.de, stern@rowland.harvard.edu, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, marex@denx.de Cc: leoyang.li@nxp.com, linux-kernel@vger.kernel.org, robin.murphy@arm.com, Laurentiu Tudor Subject: [RFC PATCH v2 0/3] prerequisites for device reserved local mem rework Date: Tue, 14 May 2019 17:38:04 +0300 Message-Id: <20190514143807.7745-1-laurentiu.tudor@nxp.com> X-Mailer: git-send-email 2.17.1 X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Laurentiu Tudor For HCs that have local memory, replace the current DMA API usage with a genalloc generic allocator to manage the mappings for these devices. This is in preparation for dropping the existing "coherent" dma mem declaration APIs. Current implementation was relying on a short circuit in the DMA API that in the end, was acting as an allocator for these type of devices. Only compiled tested, so any volunteers willing to test are most welcome. Thank you! For context, see thread here: https://lkml.org/lkml/2019/4/22/357 Changes in v2: - use genalloc also in core usb (based on comment from Robin) - moved genpool decl to usb_hcd to be accesible from core usb Laurentiu Tudor (3): USB: use genalloc for USB HCs with local memory usb: host: ohci-sm501: init genalloc for local memory usb: host: ohci-tmio: init genalloc for local memory drivers/usb/core/buffer.c | 12 ++++++- drivers/usb/host/ohci-hcd.c | 23 +++++++++++--- drivers/usb/host/ohci-sm501.c | 60 +++++++++++++++++++---------------- drivers/usb/host/ohci-tmio.c | 23 +++++++++----- include/linux/usb/hcd.h | 3 ++ 5 files changed, 80 insertions(+), 41 deletions(-) -- 2.17.1