From patchwork Mon Apr 29 14:02:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathias Nyman X-Patchwork-Id: 13647017 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EEB127580B for ; Mon, 29 Apr 2024 14:01:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714399273; cv=none; b=qtkyOW/Q4NQIt1Z1G3123M51gwoX9P7/BcfzA5H8zD5FvxGBHBQ80Dk3Y1EmZJjx3/Ve5FCBIlR/1fIQFWbu+Q2ewbbS6yEmwIgtJ8rsu6Qp9Uyp+tPVFrVY9cIhSl7dxJf1fFeWceHpyeEhRJKt597wK85W3hzIEwfQTJt0JsI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714399273; c=relaxed/simple; bh=61nePizSv2lbpRAvQQgT5lWNxRYmKYIsnIKUv6mk8ss=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=LRPualD35vZa6eaYWV8vo2qSLSs+8Hi4LEHW2AOdC9q/xJd9oXVTMcNIE7e59L4PndFut2CcWS4qDqu5EfGfZbpuzMwdWXnfbt+PTB8XaHxAORFjFmIo2wCqi2NUCG+HcGLBhiw/40xAQ7Jm786iYh9m8KId4pL4FoS3Ch7oR7I= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=RYqZSvY/; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="RYqZSvY/" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1714399272; x=1745935272; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=61nePizSv2lbpRAvQQgT5lWNxRYmKYIsnIKUv6mk8ss=; b=RYqZSvY//nPBgqAuVObLLBYbsyp6K7uPxhZrWOUk2CeMxkdE9CVcZxps eoQWf/fg7p19fTY93pwuWaYqOp1jbP5p41P/Mtr5mhIJWYLNoFTDRgbVi My2XOBESYTNzVr703F4yj6HiWK2PcMvzEs4hclNEoIuxa58x0Dcekq/HQ KHYV4JP/4/XIJYP34gprSfcB4AMkzaMfxWBo+Cowqxz2h/UtIKqLJiE3Y Kmem9h5mENBpzEwvtqFxATCedaH4LQD8EyiysTEPk5PWhjdSBTxW8hJ2p QMpfHX9an/34HUtavm2a9mj8AlBc0zYVV6YHPLBh+vOfaUAFyu19+Jxis g==; X-CSE-ConnectionGUID: btygtLVBS42LHbMdCE6eig== X-CSE-MsgGUID: Vv6tilyAQ06nJ10AHnvBZQ== X-IronPort-AV: E=McAfee;i="6600,9927,11059"; a="9911456" X-IronPort-AV: E=Sophos;i="6.07,239,1708416000"; d="scan'208";a="9911456" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2024 07:01:11 -0700 X-CSE-ConnectionGUID: /oJnT4zYTp+f5g32dFcT3Q== X-CSE-MsgGUID: K0wl/2aZRdiVlPoWoUQZBQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,239,1708416000"; d="scan'208";a="26521802" Received: from mattu-haswell.fi.intel.com ([10.237.72.199]) by orviesa006.jf.intel.com with ESMTP; 29 Apr 2024 07:01:09 -0700 From: Mathias Nyman To: Cc: , Mathias Nyman , Niklas Neronin Subject: [PATCH 09/18] xhci: remove XHCI_TRUST_TX_LENGTH quirk Date: Mon, 29 Apr 2024 17:02:36 +0300 Message-Id: <20240429140245.3955523-10-mathias.nyman@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240429140245.3955523-1-mathias.nyman@linux.intel.com> References: <20240429140245.3955523-1-mathias.nyman@linux.intel.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 If this quirk was set then driver would treat transfer events with 'Success' completion code as 'Short packet' if there were untransferred bytes left. This is so common that turn it into default behavior. xhci_warn_ratelimited() is no longer used after this, so remove it. A success event with untransferred bytes left doesn't always mean a misbehaving controller. If there was an error mid a multi-TRB TD it's allowed to issue a success event for the last TRB in that TD. See xhci 1.2 spec 4.9.1 Transfer Descriptors "Note: If an error is detected while processing a multi-TRB TD, the xHC shall generate a Transfer Event for the TRB that the error was detected on with the appropriate error Condition Code, then may advance to the next TD. If in the process of advancing to the next TD, a Transfer TRB is encountered with its IOC flag set, then the Condition Code of the Transfer Event generated for that Transfer TRB should be Success, because there was no error actually associated with the TRB that generated the Event. However, an xHC implementation may redundantly assert the original error Condition Code." Co-developed-by: Niklas Neronin Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman --- drivers/usb/host/xhci-pci.c | 15 ++------------- drivers/usb/host/xhci-rcar.c | 6 ++---- drivers/usb/host/xhci-ring.c | 15 +++++---------- drivers/usb/host/xhci.h | 4 +--- 4 files changed, 10 insertions(+), 30 deletions(-) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 93b697648018..653b47c45591 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -270,17 +270,12 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) "QUIRK: Fresco Logic revision %u " "has broken MSI implementation", pdev->revision); - xhci->quirks |= XHCI_TRUST_TX_LENGTH; } if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1009) xhci->quirks |= XHCI_BROKEN_STREAMS; - if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && - pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1100) - xhci->quirks |= XHCI_TRUST_TX_LENGTH; - if (pdev->vendor == PCI_VENDOR_ID_NEC) xhci->quirks |= XHCI_NEC_HOST; @@ -307,11 +302,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) xhci->quirks |= XHCI_RESET_ON_RESUME; } - if (pdev->vendor == PCI_VENDOR_ID_AMD) { - xhci->quirks |= XHCI_TRUST_TX_LENGTH; - if (pdev->device == 0x43f7) - xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW; - } + if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x43f7) + xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW; if ((pdev->vendor == PCI_VENDOR_ID_AMD) && ((pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4) || @@ -399,12 +391,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) if (pdev->vendor == PCI_VENDOR_ID_ETRON && pdev->device == PCI_DEVICE_ID_EJ168) { xhci->quirks |= XHCI_RESET_ON_RESUME; - xhci->quirks |= XHCI_TRUST_TX_LENGTH; xhci->quirks |= XHCI_BROKEN_STREAMS; } if (pdev->vendor == PCI_VENDOR_ID_RENESAS && pdev->device == 0x0014) { - xhci->quirks |= XHCI_TRUST_TX_LENGTH; xhci->quirks |= XHCI_ZERO_64B_REGS; } if (pdev->vendor == PCI_VENDOR_ID_RENESAS && @@ -434,7 +424,6 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) } if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA && pdev->device == PCI_DEVICE_ID_ASMEDIA_1042A_XHCI) { - xhci->quirks |= XHCI_TRUST_TX_LENGTH; xhci->quirks |= XHCI_NO_64BIT_SUPPORT; } if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA && diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c index ab9c5969e462..8b357647728c 100644 --- a/drivers/usb/host/xhci-rcar.c +++ b/drivers/usb/host/xhci-rcar.c @@ -214,8 +214,7 @@ static int xhci_rcar_resume_quirk(struct usb_hcd *hcd) */ #define SET_XHCI_PLAT_PRIV_FOR_RCAR(firmware) \ .firmware_name = firmware, \ - .quirks = XHCI_NO_64BIT_SUPPORT | XHCI_TRUST_TX_LENGTH | \ - XHCI_SLOW_SUSPEND, \ + .quirks = XHCI_NO_64BIT_SUPPORT | XHCI_SLOW_SUSPEND, \ .init_quirk = xhci_rcar_init_quirk, \ .plat_start = xhci_rcar_start, \ .resume_quirk = xhci_rcar_resume_quirk, @@ -229,8 +228,7 @@ static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = { }; static const struct xhci_plat_priv xhci_plat_renesas_rzv2m = { - .quirks = XHCI_NO_64BIT_SUPPORT | XHCI_TRUST_TX_LENGTH | - XHCI_SLOW_SUSPEND, + .quirks = XHCI_NO_64BIT_SUPPORT | XHCI_SLOW_SUSPEND, .init_quirk = xhci_rzv2m_init_quirk, .plat_start = xhci_rzv2m_start, }; diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 0a7c70ae5edc..07c529e072c9 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2397,8 +2397,7 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, break; if (remaining) { frame->status = short_framestatus; - if (xhci->quirks & XHCI_TRUST_TX_LENGTH) - sum_trbs_for_length = true; + sum_trbs_for_length = true; break; } frame->status = 0; @@ -2648,15 +2647,11 @@ static int handle_tx_event(struct xhci_hcd *xhci, * transfer type */ case COMP_SUCCESS: - if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) == 0) - break; - if (xhci->quirks & XHCI_TRUST_TX_LENGTH || - ep_ring->last_td_was_short) + if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) { trb_comp_code = COMP_SHORT_PACKET; - else - xhci_warn_ratelimited(xhci, - "WARN Successful completion on short TX for slot %u ep %u: needs XHCI_TRUST_TX_LENGTH quirk?\n", - slot_id, ep_index); + xhci_dbg(xhci, "Successful completion on short TX for slot %u ep %u with last td short %d\n", + slot_id, ep_index, ep_ring->last_td_was_short); + } break; case COMP_SHORT_PACKET: break; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 8c96dd6ef3d4..933f8a296014 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1588,7 +1588,7 @@ struct xhci_hcd { #define XHCI_RESET_ON_RESUME BIT_ULL(7) #define XHCI_SW_BW_CHECKING BIT_ULL(8) #define XHCI_AMD_0x96_HOST BIT_ULL(9) -#define XHCI_TRUST_TX_LENGTH BIT_ULL(10) +#define XHCI_TRUST_TX_LENGTH BIT_ULL(10) /* Deprecated */ #define XHCI_LPM_SUPPORT BIT_ULL(11) #define XHCI_INTEL_HOST BIT_ULL(12) #define XHCI_SPURIOUS_REBOOT BIT_ULL(13) @@ -1725,8 +1725,6 @@ static inline bool xhci_has_one_roothub(struct xhci_hcd *xhci) dev_err(xhci_to_hcd(xhci)->self.controller , fmt , ## args) #define xhci_warn(xhci, fmt, args...) \ dev_warn(xhci_to_hcd(xhci)->self.controller , fmt , ## args) -#define xhci_warn_ratelimited(xhci, fmt, args...) \ - dev_warn_ratelimited(xhci_to_hcd(xhci)->self.controller , fmt , ## args) #define xhci_info(xhci, fmt, args...) \ dev_info(xhci_to_hcd(xhci)->self.controller , fmt , ## args)