From patchwork Tue Aug 22 11:25:40 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ian Molton X-Patchwork-Id: 9914941 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B94FD603FA for ; Tue, 22 Aug 2017 11:43:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B64062886B for ; Tue, 22 Aug 2017 11:43:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AB1E82887E; Tue, 22 Aug 2017 11:43:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 31CB42886B for ; Tue, 22 Aug 2017 11:43:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932662AbdHVLnS (ORCPT ); Tue, 22 Aug 2017 07:43:18 -0400 Received: from [217.148.43.144] ([217.148.43.144]:58092 "EHLO mnementh.co.uk" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S932561AbdHVLnP (ORCPT ); Tue, 22 Aug 2017 07:43:15 -0400 Received: from 224.14.9.51.dyn.plus.net ([51.9.14.224] helo=localhost.localdomain) by mnementh.co.uk with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.80) (envelope-from ) id 1dk7KK-00039F-5C; Tue, 22 Aug 2017 11:26:32 +0000 From: Ian Molton To: linux-wireless@vger.kernel.org Cc: arend.vanspriel@broadcom.com Subject: [PATCH 20/30] brcmfmac: Remove repeated calls to brcmf_chip_get_core() Date: Tue, 22 Aug 2017 12:25:40 +0100 Message-Id: <20170822112550.60311-21-ian@mnementh.co.uk> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170822112550.60311-1-ian@mnementh.co.uk> References: <20170822112550.60311-1-ian@mnementh.co.uk> X-Spam_score: -2.9 X-Spam_score_int: -28 X-Spam_bar: -- X-Spam_report: Spam detection software, running on the system "mnementh.co.uk", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: There is no need to repeatdly call brcmf_chip_get_core(), which traverses a list of cores every time its called (including during register access code!). Call it once, and store a pointer to the core structure. The existing code does nto keep track of users of the cores anyway, and even so, this will allow for easier refcounting in future. [...] Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP 0.0 TVD_RCVD_IP Message was received from an IP address 0.0 URIBL_BLOCKED ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [URIs: mnementh.co.uk] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP There is no need to repeatdly call brcmf_chip_get_core(), which traverses a list of cores every time its called (including during register access code!). Call it once, and store a pointer to the core structure. The existing code does nto keep track of users of the cores anyway, and even so, this will allow for easier refcounting in future. Signed-off-by: Ian Molton Reviewed-by: Arend van Spriel --- .../wireless/broadcom/brcm80211/brcmfmac/sdio.c | 25 +++++++++++++--------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c index b095bb66fe96..289ff61b7bf8 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c @@ -435,6 +435,7 @@ struct brcmf_sdio_count { struct brcmf_sdio { struct brcmf_sdio_dev *sdiodev; /* sdio device handler */ struct brcmf_chip *ci; /* Chip info struct */ + struct brcmf_core *sdio_core; /* sdio core info struct */ u32 hostintmask; /* Copy of Host Interrupt Mask */ atomic_t intstatus; /* Intstatus bits (events) pending */ @@ -662,10 +663,9 @@ static bool data_ok(struct brcmf_sdio *bus) */ static int r_sdreg32(struct brcmf_sdio *bus, u32 *regvar, u32 offset) { - struct brcmf_core *core; + struct brcmf_core *core = bus->sdio_core; int ret; - core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV); *regvar = brcmf_sdiod_readl(bus->sdiodev, core->base + offset, &ret); return ret; @@ -673,10 +673,9 @@ static int r_sdreg32(struct brcmf_sdio *bus, u32 *regvar, u32 offset) static int w_sdreg32(struct brcmf_sdio *bus, u32 regval, u32 reg_offset) { - struct brcmf_core *core; + struct brcmf_core *core = bus->sdio_core; int ret; - core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV); brcmf_sdiod_writel(bus->sdiodev, core->base + reg_offset, regval, &ret); return ret; @@ -2485,12 +2484,11 @@ static inline void brcmf_sdio_clrintr(struct brcmf_sdio *bus) static int brcmf_sdio_intr_rstatus(struct brcmf_sdio *bus) { - struct brcmf_core *buscore; + struct brcmf_core *buscore = bus->sdio_core; u32 addr; unsigned long val; int ret; - buscore = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV); addr = buscore->base + __sd_reg(intstatus); val = brcmf_sdiod_readl(bus->sdiodev, addr, &ret); @@ -3367,13 +3365,14 @@ static void brcmf_sdio_sr_init(struct brcmf_sdio *bus) /* enable KSO bit */ static int brcmf_sdio_kso_init(struct brcmf_sdio *bus) { + struct brcmf_core *core = bus->sdio_core; u8 val; int err = 0; brcmf_dbg(TRACE, "Enter\n"); /* KSO bit added in SDIO core rev 12 */ - if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12) + if (core->rev < 12) return 0; val = brcmf_sdiod_readb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, &err); @@ -3401,6 +3400,7 @@ static int brcmf_sdio_bus_preinit(struct device *dev) struct brcmf_bus *bus_if = dev_get_drvdata(dev); struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; struct brcmf_sdio *bus = sdiodev->bus; + struct brcmf_core *core = bus->sdio_core; uint pad_size; u32 value; int err; @@ -3409,7 +3409,7 @@ static int brcmf_sdio_bus_preinit(struct device *dev) * a device perspective, ie. bus:txglom affects the * bus transfers from device to host. */ - if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12) { + if (core->rev < 12) { /* for sdio core rev < 12, disable txgloming */ value = 0; err = brcmf_iovar_data_set(dev, "bus:txglom", &value, @@ -3747,11 +3747,10 @@ static void brcmf_sdio_buscore_activate(void *ctx, struct brcmf_chip *chip, u32 rstvec) { struct brcmf_sdio_dev *sdiodev = ctx; - struct brcmf_core *core; + struct brcmf_core *core = sdiodev->bus->sdio_core; u32 reg_addr; /* clear all interrupts */ - core = brcmf_chip_get_core(chip, BCMA_CORE_SDIO_DEV); reg_addr = core->base + __sd_reg(intstatus); brcmf_sdiod_writel(sdiodev, reg_addr, 0xFFFFFFFF, NULL); @@ -3832,6 +3831,12 @@ brcmf_sdio_probe_attach(struct brcmf_sdio *bus) bus->ci = NULL; goto fail; } + + /* Pick up the SDIO core info struct from chip.c */ + bus->sdio_core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV); + if (!bus->sdio_core) + goto fail; + sdiodev->settings = brcmf_get_module_param(sdiodev->dev, BRCMF_BUSTYPE_SDIO, bus->ci->chip,