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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 0ED1DC43613 for ; Sun, 23 Jun 2019 13:28:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DE85F216E3 for ; Sun, 23 Jun 2019 13:28:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726940AbfFWN2M (ORCPT ); Sun, 23 Jun 2019 09:28:12 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:33577 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726817AbfFWN1z (ORCPT ); Sun, 23 Jun 2019 09:27:55 -0400 Received: from localhost ([127.0.0.1] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1hf2XA-0001mx-LA; Sun, 23 Jun 2019 15:27:52 +0200 Message-Id: <20190623132436.461437795@linutronix.de> User-Agent: quilt/0.65 Date: Sun, 23 Jun 2019 15:24:06 +0200 From: Thomas Gleixner To: LKML Cc: x86@kernel.org, Peter Zijlstra , Ricardo Neri , Ashok Raj , Andi Kleen , Suravee Suthikulpanit , Stephane Eranian , Ravi Shankar Subject: [patch 26/29] x86/hpet: Consolidate clockevent functions References: <20190623132340.463097504@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that the legacy clockevent is wrapped in a hpet_channel struct most clockevent functions can be shared between the legacy and the MSI based clockevents. Signed-off-by: Thomas Gleixner --- arch/x86/kernel/hpet.c | 92 +++++++++++++------------------------------------ 1 file changed, 25 insertions(+), 67 deletions(-) --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -310,8 +310,9 @@ static void hpet_legacy_clockevent_regis pr_debug("Clockevent registered\n"); } -static int hpet_set_periodic(struct clock_event_device *evt, int channel) +static int hpet_clkevt_set_periodic(struct clock_event_device *evt) { + unsigned int channel = clockevent_to_channel(evt)->num; unsigned int cfg, cmp, now; uint64_t delta; @@ -340,8 +341,9 @@ static int hpet_set_periodic(struct cloc return 0; } -static int hpet_set_oneshot(struct clock_event_device *evt, int channel) +static int hpet_clkevt_set_oneshot(struct clock_event_device *evt) { + unsigned int channel = clockevent_to_channel(evt)->num; unsigned int cfg; cfg = hpet_readl(HPET_Tn_CFG(channel)); @@ -352,8 +354,9 @@ static int hpet_set_oneshot(struct clock return 0; } -static int hpet_shutdown(struct clock_event_device *evt, int channel) +static int hpet_clkevt_shutdown(struct clock_event_device *evt) { + unsigned int channel = clockevent_to_channel(evt)->num; unsigned int cfg; cfg = hpet_readl(HPET_Tn_CFG(channel)); @@ -363,15 +366,17 @@ static int hpet_shutdown(struct clock_ev return 0; } -static int hpet_resume(struct clock_event_device *evt) +static int hpet_clkevt_legacy_resume(struct clock_event_device *evt) { hpet_enable_legacy_int(); hpet_print_config(); return 0; } -static int hpet_next_event(unsigned long delta, int channel) +static int +hpet_clkevt_set_next_event(unsigned long delta, struct clock_event_device *evt) { + unsigned int channel = clockevent_to_channel(evt)->num; u32 cnt; s32 res; @@ -406,32 +411,6 @@ static int hpet_next_event(unsigned long return res < HPET_MIN_CYCLES ? -ETIME : 0; } -static int hpet_legacy_shutdown(struct clock_event_device *evt) -{ - return hpet_shutdown(evt, 0); -} - -static int hpet_legacy_set_oneshot(struct clock_event_device *evt) -{ - return hpet_set_oneshot(evt, 0); -} - -static int hpet_legacy_set_periodic(struct clock_event_device *evt) -{ - return hpet_set_periodic(evt, 0); -} - -static int hpet_legacy_resume(struct clock_event_device *evt) -{ - return hpet_resume(evt); -} - -static int hpet_legacy_next_event(unsigned long delta, - struct clock_event_device *evt) -{ - return hpet_next_event(delta, 0); -} - /* * The HPET clock event device wrapped in a channel for conversion */ @@ -440,11 +419,11 @@ static struct hpet_channel hpet_channel0 .name = "hpet", .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, - .set_state_periodic = hpet_legacy_set_periodic, - .set_state_oneshot = hpet_legacy_set_oneshot, - .set_state_shutdown = hpet_legacy_shutdown, - .tick_resume = hpet_legacy_resume, - .set_next_event = hpet_legacy_next_event, + .set_state_periodic = hpet_clkevt_set_periodic, + .set_state_oneshot = hpet_clkevt_set_oneshot, + .set_state_shutdown = hpet_clkevt_shutdown, + .tick_resume = hpet_clkevt_legacy_resume, + .set_next_event = hpet_clkevt_set_next_event, .irq = 0, .rating = 50, } @@ -481,22 +460,7 @@ void hpet_msi_write(struct hpet_channel hpet_writel(msg->address_lo, HPET_Tn_ROUTE(hc->num) + 4); } -static int hpet_msi_shutdown(struct clock_event_device *evt) -{ - return hpet_shutdown(evt, clockevent_to_channel(evt)->num); -} - -static int hpet_msi_set_oneshot(struct clock_event_device *evt) -{ - return hpet_set_oneshot(evt, clockevent_to_channel(evt)->num); -} - -static int hpet_msi_set_periodic(struct clock_event_device *evt) -{ - return hpet_set_periodic(evt, clockevent_to_channel(evt)->num); -} - -static int hpet_msi_resume(struct clock_event_device *evt) +static int hpet_clkevt_msi_resume(struct clock_event_device *evt) { struct hpet_channel *hc = clockevent_to_channel(evt); struct irq_data *data = irq_get_irq_data(hc->irq); @@ -509,13 +473,7 @@ static int hpet_msi_resume(struct clock_ return 0; } -static int hpet_msi_next_event(unsigned long delta, - struct clock_event_device *evt) -{ - return hpet_next_event(delta, clockevent_to_channel(evt)->num); -} - -static irqreturn_t hpet_interrupt_handler(int irq, void *data) +static irqreturn_t hpet_msi_interrupt_handler(int irq, void *data) { struct hpet_channel *hc = data; struct clock_event_device *evt = &hc->evt; @@ -529,9 +487,9 @@ static irqreturn_t hpet_interrupt_handle return IRQ_HANDLED; } -static int hpet_setup_irq(struct hpet_channel *hc) +static int hpet_setup_msi_irq(struct hpet_channel *hc) { - if (request_irq(hc->irq, hpet_interrupt_handler, + if (request_irq(hc->irq, hpet_msi_interrupt_handler, IRQF_TIMER | IRQF_NOBALANCING, hc->name, hc)) return -1; @@ -553,20 +511,20 @@ static void init_one_hpet_msi_clockevent hc->cpu = cpu; per_cpu(cpu_hpet_channel, cpu) = hc; evt->name = hc->name; - hpet_setup_irq(hc); + hpet_setup_msi_irq(hc); evt->irq = hc->irq; evt->rating = 110; evt->features = CLOCK_EVT_FEAT_ONESHOT; if (hc->boot_cfg & HPET_TN_PERIODIC) { evt->features |= CLOCK_EVT_FEAT_PERIODIC; - evt->set_state_periodic = hpet_msi_set_periodic; + evt->set_state_periodic = hpet_clkevt_set_periodic; } - evt->set_state_shutdown = hpet_msi_shutdown; - evt->set_state_oneshot = hpet_msi_set_oneshot; - evt->tick_resume = hpet_msi_resume; - evt->set_next_event = hpet_msi_next_event; + evt->set_state_shutdown = hpet_clkevt_shutdown; + evt->set_state_oneshot = hpet_clkevt_set_oneshot; + evt->set_next_event = hpet_clkevt_set_next_event; + evt->tick_resume = hpet_clkevt_msi_resume; evt->cpumask = cpumask_of(hc->cpu); clockevents_config_and_register(evt, hpet_freq, HPET_MIN_PROG_DELTA,