From patchwork Mon Jan 29 06:57:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Raj Kumar Bhagat X-Patchwork-Id: 768469 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 82E7351C4A for ; Mon, 29 Jan 2024 06:58:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706511493; cv=none; b=s0Sg6K6YOzvHlnxetf2XQ6DxK5hlVgAO0Hr1+EBi0zn0YvDws64cIvlF4zOTcfI3XPrOq4WB/wRyPPJIXZQf6HvlPSiVdwZH9q8kOfFZf7t/TFM63TaYmNnfjtgR5em8tk4H3NjnuFYAbjLhGgGErU7QHk/IUUCSQEHi3zeAGsY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706511493; c=relaxed/simple; bh=nNlgKtwWDV/rks8ITB+ODUusiQDWRp/f5tt2EsoGrTs=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=utdic8EMp0aK/IAg66qcUtYU9KBLsiC+0p2pJm/X/OZL9sR//Ec+MyvKZvX3vxXYKzh6vfNJD8clc5hvEJxrLqtmsAsy7T8x7ld8EQfTN/KchkM0qZNUIz4CbWX86swiGTOZNOJ1JvCdzaHeJ30ZVSem6TmbsSMX2ZStoj9RRAU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=FaSXzFqU; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="FaSXzFqU" Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40T5oiua030747; Mon, 29 Jan 2024 06:58:10 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= qcppdkim1; bh=xmVXKId+DBQDIUM11J5Xbn9JnGmCg4l1DhYD7mQ8j40=; b=Fa SXzFqUjXD/upCGrtYCBX0KCJlMG+srADO2RM1RC5M8ffdwFEOqJOqD54F44sCVE8 FfnFW7YrtUASmUCpESUz8lSxP3BLbcqqN/SKdteIm6ByoZNrXTtt5pUbj116pDsF KGsr67gHCH4mscnKhl4S/QzesJ2wb8FT7SfPAFJSAe+Czc+VGas9oYIXV/y9ISe9 udmwdAyH8mcXzlRk77z+f4W0rUdycdaD8NV3wpyfN/h1N19006irGbegk+GoPs2a Bw9P5+hFysvVjovEO4HDXgJ4yPeCCnfXjRW9PjU3VXd/6I1iW6SeNgTDAFpqbX3b 8Nfh8ggPgbK714L7MsMg== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3vx23k8ft7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 29 Jan 2024 06:58:10 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 40T6w9I9006625 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 29 Jan 2024 06:58:09 GMT Received: from hu-rajkbhag-blr.qualcomm.com (10.80.80.8) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Sun, 28 Jan 2024 22:58:07 -0800 From: Raj Kumar Bhagat To: CC: , P Praneesh , Karthikeyan Periyasamy , Raj Kumar Bhagat Subject: [PATCH v3 11/13] wifi: ath12k: fix PCI read and write Date: Mon, 29 Jan 2024 12:27:22 +0530 Message-ID: <20240129065724.2310207-12-quic_rajkbhag@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240129065724.2310207-1-quic_rajkbhag@quicinc.com> References: <20240129065724.2310207-1-quic_rajkbhag@quicinc.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: szydAUpalrUnP2YsWNfWJPbnT-yJFQuW X-Proofpoint-GUID: szydAUpalrUnP2YsWNfWJPbnT-yJFQuW X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-29_03,2024-01-25_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 suspectscore=0 spamscore=0 malwarescore=0 mlxlogscore=908 mlxscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401190000 definitions=main-2401290049 From: P Praneesh Currently, PCI read is failing for the registers belonging to SECURITY_CONTROL_WLAN registers. These registers read is required to read the board-id to identify the dual-mac QCN9274 hardware. The failure is because, for these registers (SECURITY_CONTROL_WLAN) offset, ath12k_pci_get_window_start() returns window_start as 0. Due to this PCI read is done without PCI select window and with window_start offset as 0. Hence, fix PCI read and write by doing PCI select window and by using the correct window_start offset - WINDOW_START for SECURITY_CONTROL_WLAN registers. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00188-QCAHKSWPL_SILICONZ-1 Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 Signed-off-by: P Praneesh Co-developed-by: Karthikeyan Periyasamy Signed-off-by: Karthikeyan Periyasamy Signed-off-by: Raj Kumar Bhagat Acked-by: Jeff Johnson --- drivers/net/wireless/ath/ath12k/pci.c | 43 ++++++++++++++------------- 1 file changed, 23 insertions(+), 20 deletions(-) diff --git a/drivers/net/wireless/ath/ath12k/pci.c b/drivers/net/wireless/ath/ath12k/pci.c index d334f41f9658..14954bc05144 100644 --- a/drivers/net/wireless/ath/ath12k/pci.c +++ b/drivers/net/wireless/ath/ath12k/pci.c @@ -205,18 +205,17 @@ static u32 ath12k_pci_get_window_start(struct ath12k_base *ab, /* If offset lies within CE register range, use 2nd window */ else if ((offset ^ HAL_CE_WFSS_CE_REG_BASE) < WINDOW_RANGE_MASK) window_start = 2 * WINDOW_START; - /* If offset lies within PCI_BAR_WINDOW0_BASE and within PCI_SOC_PCI_REG_BASE - * use 0th window - */ - else if (((offset ^ PCI_BAR_WINDOW0_BASE) < WINDOW_RANGE_MASK) && - !((offset ^ PCI_SOC_PCI_REG_BASE) < PCI_SOC_RANGE_MASK)) - window_start = 0; else window_start = WINDOW_START; return window_start; } +static inline bool ath12k_pci_is_offset_within_mhi_region(u32 offset) +{ + return (offset >= PCI_MHIREGLEN_REG && offset <= PCI_MHI_REGION_END); +} + static void ath12k_pci_soc_global_reset(struct ath12k_base *ab) { u32 val, delay; @@ -1172,15 +1171,17 @@ u32 ath12k_pci_read32(struct ath12k_base *ab, u32 offset) if (window_start == WINDOW_START) { spin_lock_bh(&ab_pci->window_lock); ath12k_pci_select_window(ab_pci, offset); - val = ioread32(ab->mem + window_start + - (offset & WINDOW_RANGE_MASK)); + + if (ath12k_pci_is_offset_within_mhi_region(offset)) { + offset = offset - PCI_MHIREGLEN_REG; + val = ioread32(ab->mem + + (offset & WINDOW_RANGE_MASK)); + } else { + val = ioread32(ab->mem + window_start + + (offset & WINDOW_RANGE_MASK)); + } spin_unlock_bh(&ab_pci->window_lock); } else { - if ((!window_start) && - (offset >= PCI_MHIREGLEN_REG && - offset <= PCI_MHI_REGION_END)) - offset = offset - PCI_MHIREGLEN_REG; - val = ioread32(ab->mem + window_start + (offset & WINDOW_RANGE_MASK)); } @@ -1217,15 +1218,17 @@ void ath12k_pci_write32(struct ath12k_base *ab, u32 offset, u32 value) if (window_start == WINDOW_START) { spin_lock_bh(&ab_pci->window_lock); ath12k_pci_select_window(ab_pci, offset); - iowrite32(value, ab->mem + window_start + - (offset & WINDOW_RANGE_MASK)); + + if (ath12k_pci_is_offset_within_mhi_region(offset)) { + offset = offset - PCI_MHIREGLEN_REG; + iowrite32(value, ab->mem + + (offset & WINDOW_RANGE_MASK)); + } else { + iowrite32(value, ab->mem + window_start + + (offset & WINDOW_RANGE_MASK)); + } spin_unlock_bh(&ab_pci->window_lock); } else { - if ((!window_start) && - (offset >= PCI_MHIREGLEN_REG && - offset <= PCI_MHI_REGION_END)) - offset = offset - PCI_MHIREGLEN_REG; - iowrite32(value, ab->mem + window_start + (offset & WINDOW_RANGE_MASK)); }