From patchwork Thu Jul 23 00:10:17 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Taku Izumi X-Patchwork-Id: 498930 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 100CC1402DE for ; Thu, 23 Jul 2015 10:17:01 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753451AbbGWAO7 (ORCPT ); Wed, 22 Jul 2015 20:14:59 -0400 Received: from mgwym04.jp.fujitsu.com ([211.128.242.43]:14461 "EHLO mgwym04.jp.fujitsu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753434AbbGWAO5 (ORCPT ); Wed, 22 Jul 2015 20:14:57 -0400 Received: from yt-mxoi1.gw.nic.fujitsu.com (unknown [192.168.229.67]) by mgwym04.jp.fujitsu.com with smtp id 7516_0f67_9621d41e_00c9_4db1_8ea7_e34fcc7e4f18; Thu, 23 Jul 2015 09:14:53 +0900 Received: from m3050.s.css.fujitsu.com (msm.b.css.fujitsu.com [10.134.21.208]) by yt-mxoi1.gw.nic.fujitsu.com (Postfix) with ESMTP id 7BF19AC015B; Thu, 23 Jul 2015 09:14:53 +0900 (JST) Received: from RX300S6 (unknown [10.124.196.197]) by m3050.s.css.fujitsu.com (Postfix) with SMTP id 38D631FC; Thu, 23 Jul 2015 09:14:52 +0900 (JST) Received: by RX300S6 (sSMTP sendmail emulation); Thu, 23 Jul 2015 09:10:53 +0900 From: Taku Izumi To: netdev@vger.kernel.org, davem@davemloft.net Cc: platform-driver-x86@vger.kernel.org, dvhart@infradead.org, rkhan@redhat.com, alexander.h.duyck@redhat.com, linux-acpi@vger.kernel.org, joe@perches.com, sergei.shtylyov@cogentembedded.com, stephen@networkplumber.org, yasu.isimatu@gmail.com, Taku Izumi Subject: [PATCH v2.1 03/22] fjes: Hardware cleanup routine Date: Thu, 23 Jul 2015 09:10:17 +0900 Message-Id: <1437610236-12490-3-git-send-email-izumi.taku@jp.fujitsu.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1437610236-12490-1-git-send-email-izumi.taku@jp.fujitsu.com> References: <1437610142-12439-1-git-send-email-izumi.taku@jp.fujitsu.com> <1437610236-12490-1-git-send-email-izumi.taku@jp.fujitsu.com> X-TM-AS-MML: disable Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch adds hardware cleanup routine to be invoked at driver's .remove routine. Signed-off-by: Taku Izumi --- drivers/net/fjes/fjes_hw.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++ drivers/net/fjes/fjes_hw.h | 1 + 2 files changed, 67 insertions(+) diff --git a/drivers/net/fjes/fjes_hw.c b/drivers/net/fjes/fjes_hw.c index e94538f..abe583e 100644 --- a/drivers/net/fjes/fjes_hw.c +++ b/drivers/net/fjes/fjes_hw.c @@ -56,6 +56,12 @@ static u8 *fjes_hw_iomap(struct fjes_hw *hw) return base; } +static void fjes_hw_iounmap(struct fjes_hw *hw) +{ + iounmap(hw->base); + release_mem_region(hw->hw_res.start, hw->hw_res.size); +} + int fjes_hw_reset(struct fjes_hw *hw) { int timeout; @@ -109,6 +115,12 @@ static int fjes_hw_alloc_shared_status_region(struct fjes_hw *hw) return 0; } +static void fjes_hw_free_shared_status_region(struct fjes_hw *hw) +{ + kfree(hw->hw_info.share); + hw->hw_info.share = NULL; +} + static int fjes_hw_alloc_epbuf(struct epbuf_handler *epbh) { void *mem; @@ -126,6 +138,18 @@ static int fjes_hw_alloc_epbuf(struct epbuf_handler *epbh) return 0; } +static void fjes_hw_free_epbuf(struct epbuf_handler *epbh) +{ + if (epbh->buffer) + vfree(epbh->buffer); + + epbh->buffer = NULL; + epbh->size = 0; + + epbh->info = NULL; + epbh->ring = NULL; +} + void fjes_hw_setup_epbuf(struct epbuf_handler *epbh, u8 *mac_addr, u32 mtu) { union ep_buffer_info *info = epbh->info; @@ -258,6 +282,32 @@ static int fjes_hw_setup(struct fjes_hw *hw) return 0; } +static void fjes_hw_cleanup(struct fjes_hw *hw) +{ + int epidx; + + if (!hw->ep_shm_info) + return; + + fjes_hw_free_shared_status_region(hw); + + kfree(hw->hw_info.req_buf); + hw->hw_info.req_buf = NULL; + + kfree(hw->hw_info.res_buf); + hw->hw_info.res_buf = NULL; + + for (epidx = 0; epidx < hw->max_epid ; epidx++) { + if (epidx == hw->my_epid) + continue; + fjes_hw_free_epbuf(&hw->ep_shm_info[epidx].tx); + fjes_hw_free_epbuf(&hw->ep_shm_info[epidx].rx); + } + + kfree(hw->ep_shm_info); + hw->ep_shm_info = NULL; +} + int fjes_hw_init(struct fjes_hw *hw) { int ret; @@ -285,6 +335,22 @@ int fjes_hw_init(struct fjes_hw *hw) return ret; } +void fjes_hw_exit(struct fjes_hw *hw) +{ + int ret; + + if (hw->base) { + ret = fjes_hw_reset(hw); + if (ret) + pr_err("%s: reset error", __func__); + + fjes_hw_iounmap(hw); + hw->base = NULL; + } + + fjes_hw_cleanup(hw); +} + void fjes_hw_set_irqmask(struct fjes_hw *hw, enum REG_ICTL_MASK intr_mask, bool mask) { diff --git a/drivers/net/fjes/fjes_hw.h b/drivers/net/fjes/fjes_hw.h index 836ebe2..1b3e9ca 100644 --- a/drivers/net/fjes/fjes_hw.h +++ b/drivers/net/fjes/fjes_hw.h @@ -241,6 +241,7 @@ struct fjes_hw { }; int fjes_hw_init(struct fjes_hw *); +void fjes_hw_exit(struct fjes_hw *); int fjes_hw_reset(struct fjes_hw *); void fjes_hw_init_command_registers(struct fjes_hw *,