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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 42A62EF48CC for ; Fri, 13 Feb 2026 08:18:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0304810E7A7; Fri, 13 Feb 2026 08:18:56 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Ne6aq5im"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) by gabe.freedesktop.org (Postfix) with ESMTPS id 279DC10E7A7 for ; Fri, 13 Feb 2026 08:18:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1770970735; x=1802506735; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HO+SwEkWslqhEx97Ce1rlWT75qhZghkyscS1Eil4qio=; b=Ne6aq5imIkk0i3BC0uZgEVhwPw6mCRp5oDzl9mZiQd+9JhnqcU/82++8 3UPGDQjTieFPfSHLYIEODUCGT6mCHl6HWQqqfzHzyEP3gm/6OSo5sxRwW 3koWe5r2a0/9XbtTmBSlK2/uU3SxiuLDwz083YTXoX/4HtfWR3pTOWRZx e1JBnkBg3sKEkCXEhDInEPN5S3ZwKXcid5KlfWiTF1mQe7AozwXPlkV1/ 3y94qXcgEeOOaVjiO3KldcELi2a/JNBukiBXxdOo/DcIyZhYZKj5E+41M aSx1lwfeJqYd0QSd+SaA3krQNurdFC02c/gNtjLHutACTMDfM4yzmVcmV w==; X-CSE-ConnectionGUID: WNTZYKmjQYqpECV2AeqP2w== X-CSE-MsgGUID: ZuEGKaE9TheeAf/LVembFA== X-IronPort-AV: E=McAfee;i="6800,10657,11699"; a="83522679" X-IronPort-AV: E=Sophos;i="6.21,288,1763452800"; d="scan'208";a="83522679" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Feb 2026 00:18:55 -0800 X-CSE-ConnectionGUID: f8i084sHQSmkGnHTK/8eHg== X-CSE-MsgGUID: bz6I7hZfT1y4BACgwkXpWg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,288,1763452800"; d="scan'208";a="212696771" Received: from jraag-z790m-itx-wifi.iind.intel.com ([10.190.239.23]) by orviesa009.jf.intel.com with ESMTP; 13 Feb 2026 00:18:52 -0800 From: Raag Jadav To: intel-xe@lists.freedesktop.org Cc: matthew.brost@intel.com, rodrigo.vivi@intel.com, riana.tauro@intel.com, michal.wajdeczko@intel.com, matthew.d.roper@intel.com, umesh.nerlige.ramappa@intel.com, mallesh.koujalagi@intel.com, soham.purkait@intel.com, anoop.c.vijay@intel.com, Raag Jadav Subject: [PATCH v2 2/4] drm/xe/sysctrl: Add system controller interrupt handler Date: Fri, 13 Feb 2026 13:46:00 +0530 Message-ID: <20260213081644.2085314-3-raag.jadav@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260213081644.2085314-1-raag.jadav@intel.com> References: <20260213081644.2085314-1-raag.jadav@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Add system controller interrupt handler which is denoted by 11th bit in GFX master interrupt register. While at it, add worker for scheduling system controller work. v2: Use system_percpu_wq instead of dedicated (Matthew Brost) Co-developed-by: Soham Purkait Signed-off-by: Soham Purkait Signed-off-by: Raag Jadav --- drivers/gpu/drm/xe/regs/xe_irq_regs.h | 1 + drivers/gpu/drm/xe/xe_irq.c | 2 ++ drivers/gpu/drm/xe/xe_sysctrl.c | 39 ++++++++++++++++++++++----- drivers/gpu/drm/xe/xe_sysctrl.h | 3 +++ drivers/gpu/drm/xe/xe_sysctrl_types.h | 7 +++++ 5 files changed, 45 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/xe/regs/xe_irq_regs.h b/drivers/gpu/drm/xe/regs/xe_irq_regs.h index 9d74f454d3ff..1d6b976c4de0 100644 --- a/drivers/gpu/drm/xe/regs/xe_irq_regs.h +++ b/drivers/gpu/drm/xe/regs/xe_irq_regs.h @@ -22,6 +22,7 @@ #define DISPLAY_IRQ REG_BIT(16) #define SOC_H2DMEMINT_IRQ REG_BIT(13) #define I2C_IRQ REG_BIT(12) +#define SYSCTRL_IRQ REG_BIT(11) #define GT_DW_IRQ(x) REG_BIT(x) /* diff --git a/drivers/gpu/drm/xe/xe_irq.c b/drivers/gpu/drm/xe/xe_irq.c index 7560a45f7f64..9e49e2241da4 100644 --- a/drivers/gpu/drm/xe/xe_irq.c +++ b/drivers/gpu/drm/xe/xe_irq.c @@ -24,6 +24,7 @@ #include "xe_mmio.h" #include "xe_pxp.h" #include "xe_sriov.h" +#include "xe_sysctrl.h" #include "xe_tile.h" /* @@ -525,6 +526,7 @@ static irqreturn_t dg1_irq_handler(int irq, void *arg) xe_heci_csc_irq_handler(xe, master_ctl); xe_display_irq_handler(xe, master_ctl); xe_i2c_irq_handler(xe, master_ctl); + xe_sysctrl_irq_handler(xe, master_ctl); xe_mert_irq_handler(xe, master_ctl); gu_misc_iir = gu_misc_irq_ack(xe, master_ctl); } diff --git a/drivers/gpu/drm/xe/xe_sysctrl.c b/drivers/gpu/drm/xe/xe_sysctrl.c index 430bccbdc3b9..aba2166650aa 100644 --- a/drivers/gpu/drm/xe/xe_sysctrl.c +++ b/drivers/gpu/drm/xe/xe_sysctrl.c @@ -7,6 +7,7 @@ #include #include +#include "regs/xe_irq_regs.h" #include "regs/xe_sysctrl_regs.h" #include "xe_device.h" #include "xe_mmio.h" @@ -28,10 +29,16 @@ * with the System Controller through the mailbox. */ +static void xe_sysctrl_work(struct work_struct *work) +{ +} + static void xe_sysctrl_fini(void *arg) { struct xe_device *xe = arg; + struct xe_sysctrl *sc = &xe->sc; + cancel_work_sync(&sc->work); xe->soc_remapper.set_sysctrl_region(xe, 0); } @@ -56,12 +63,6 @@ int xe_sysctrl_init(struct xe_device *xe) if (!xe->soc_remapper.set_sysctrl_region) return -ENODEV; - xe->soc_remapper.set_sysctrl_region(xe, SYSCTRL_MAILBOX_INDEX); - - ret = devm_add_action_or_reset(xe->drm.dev, xe_sysctrl_fini, xe); - if (ret) - return ret; - sc->mmio = devm_kzalloc(xe->drm.dev, sizeof(*sc->mmio), GFP_KERNEL); if (!sc->mmio) return -ENOMEM; @@ -74,7 +75,31 @@ int xe_sysctrl_init(struct xe_device *xe) if (ret) return ret; + ret = drmm_mutex_init(&xe->drm, &sc->work_lock); + if (ret) + return ret; + + xe->soc_remapper.set_sysctrl_region(xe, SYSCTRL_MAILBOX_INDEX); xe_sysctrl_mailbox_init(sc); + INIT_WORK(&sc->work, xe_sysctrl_work); - return 0; + return devm_add_action_or_reset(xe->drm.dev, xe_sysctrl_fini, xe); +} + +/** + * xe_sysctrl_irq_handler() - Handler for System Controller interrupts + * @xe: xe device instance + * @master_ctl: interrupt register + * + * Handle interrupts generated by System Controller. + */ +void xe_sysctrl_irq_handler(struct xe_device *xe, u32 master_ctl) +{ + struct xe_sysctrl *sc = &xe->sc; + + if (!xe->info.has_sysctrl) + return; + + if (master_ctl & SYSCTRL_IRQ) + schedule_work(&sc->work); } diff --git a/drivers/gpu/drm/xe/xe_sysctrl.h b/drivers/gpu/drm/xe/xe_sysctrl.h index ee7826fe4c98..5919310b9db9 100644 --- a/drivers/gpu/drm/xe/xe_sysctrl.h +++ b/drivers/gpu/drm/xe/xe_sysctrl.h @@ -6,8 +6,11 @@ #ifndef _XE_SYSCTRL_H_ #define _XE_SYSCTRL_H_ +#include + struct xe_device; int xe_sysctrl_init(struct xe_device *xe); +void xe_sysctrl_irq_handler(struct xe_device *xe, u32 master_ctl); #endif /* _XE_SYSCTRL_H_ */ diff --git a/drivers/gpu/drm/xe/xe_sysctrl_types.h b/drivers/gpu/drm/xe/xe_sysctrl_types.h index d4a362564925..bfaa9ad085ce 100644 --- a/drivers/gpu/drm/xe/xe_sysctrl_types.h +++ b/drivers/gpu/drm/xe/xe_sysctrl_types.h @@ -8,6 +8,7 @@ #include #include +#include struct xe_mmio; @@ -28,6 +29,12 @@ struct xe_sysctrl { * messages to help distinguish message boundaries. */ bool phase_bit; + + /** @work: Pending events work */ + struct work_struct work; + + /** @work_lock: Mutex protecting pending events */ + struct mutex work_lock; }; #endif /* _XE_SYSCTRL_TYPES_H_ */ -- 2.43.0