From patchwork Mon Nov 24 16:41:59 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalle Valo X-Patchwork-Id: 5368361 Return-Path: X-Original-To: patchwork-ath10k@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 01D64C11AC for ; Mon, 24 Nov 2014 16:42:40 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2C34320430 for ; Mon, 24 Nov 2014 16:42:35 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 20705203B0 for ; Mon, 24 Nov 2014 16:42:30 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XswiV-00088r-Pc; Mon, 24 Nov 2014 16:42:23 +0000 Received: from wolverine02.qualcomm.com ([199.106.114.251]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XswiT-0007ly-F1 for ath10k@lists.infradead.org; Mon, 24 Nov 2014 16:42:22 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qca.qualcomm.com; i=@qca.qualcomm.com; q=dns/txt; s=qcdkim; t=1416847341; x=1448383341; h=subject:to:from:cc:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=axIajjdjawkHx4DkAXXig1LLJqSZgI+zFZrAR4OOKp4=; b=quZIqFnJOwUqkeLfXJkCGmpWbmsqkuvOdggx7VQ1hTMmRinK/zqXC4iE RAALFvHYW53JjeNbMBMwN6ju84nJ0oKjrLg4gZbGRCCpqUY8xqCiXiiHD oXgD6QetvXzwjJk3ohfvI9nv+36hhZhIEYiraHailugtq/K8HOah0SQdw Y=; X-IronPort-AV: E=McAfee;i="5600,1067,7631"; a="179630014" Received: from ironmsg01-lv.qualcomm.com ([10.47.202.180]) by wolverine02.qualcomm.com with ESMTP; 24 Nov 2014 08:42:04 -0800 X-IronPort-AV: E=Sophos;i="5.07,449,1413270000"; d="scan'208";a="31845894" Received: from nasanexm01g.na.qualcomm.com ([10.85.0.33]) by ironmsg01-lv.qualcomm.com with ESMTP/TLS/RC4-SHA; 24 Nov 2014 08:42:04 -0800 Received: from potku.adurom.net (10.80.80.8) by NASANEXM01G.na.qualcomm.com (10.85.0.33) with Microsoft SMTP Server (TLS) id 15.0.913.22; Mon, 24 Nov 2014 08:42:02 -0800 Subject: [PATCH v2 1/2] ath10k: add register access debugfs interface To: From: Kalle Valo Date: Mon, 24 Nov 2014 18:41:59 +0200 Message-ID: <20141124164159.29422.98462.stgit@potku.adurom.net> In-Reply-To: <20141124164037.29422.14033.stgit@potku.adurom.net> References: <20141124164037.29422.14033.stgit@potku.adurom.net> User-Agent: StGit/0.15 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: NASANEXM01G.na.qualcomm.com (10.85.0.33) To NASANEXM01G.na.qualcomm.com (10.85.0.33) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141124_084221_576837_CB7540D3 X-CRM114-Status: GOOD ( 13.32 ) X-Spam-Score: -5.1 (-----) Cc: linux-wireless@vger.kernel.org X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_LOW, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Yanbo Li Debugfs files reg_addr and reg_val are used for reading and writing to the firmware (target) registers. reg_addr contains the address to be accessed, which also needs to be set first, and reg_value is when used for reading and writing the actual value in ASCII. To read a value from the firmware register 0x100000: # echo 0x100000 > reg_addr # cat reg_value 0x00100000:0x000002d3 To write value 0x2400 to address 0x100000: # echo 0x100000 > reg_addr # echo 0x2400 > reg_value # Signed-off-by: Yanbo Li Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/core.h | 2 + drivers/net/wireless/ath/ath10k/debug.c | 102 +++++++++++++++++++++++++++++++ drivers/net/wireless/ath/ath10k/hif.h | 26 ++++++++ drivers/net/wireless/ath/ath10k/pci.c | 2 + 4 files changed, 132 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 8f86bd34e823..5cb4fe97b4ff 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -321,6 +321,8 @@ struct ath10k_debug { u32 fw_dbglog_mask; u32 pktlog_filter; + u32 reg_addr; + u8 htt_max_amsdu; u8 htt_max_ampdu; diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c index f10721da4980..b500cd619c05 100644 --- a/drivers/net/wireless/ath/ath10k/debug.c +++ b/drivers/net/wireless/ath/ath10k/debug.c @@ -928,6 +928,102 @@ static const struct file_operations fops_fw_crash_dump = { .llseek = default_llseek, }; +static ssize_t ath10k_reg_addr_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath10k *ar = file->private_data; + u8 buf[32]; + unsigned int len = 0; + u32 reg_addr; + + spin_lock_bh(&ar->data_lock); + reg_addr = ar->debug.reg_addr; + spin_unlock_bh(&ar->data_lock); + + len += scnprintf(buf + len, sizeof(buf) - len, "0x%x\n", reg_addr); + + return simple_read_from_buffer(user_buf, count, ppos, buf, len); +} + +static ssize_t ath10k_reg_addr_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath10k *ar = file->private_data; + u32 reg_addr; + int ret; + + ret = kstrtou32_from_user(user_buf, count, 0, ®_addr); + if (ret) + return ret; + + if (!IS_ALIGNED(reg_addr, 4)) + return -EFAULT; + + spin_lock_bh(&ar->data_lock); + ar->debug.reg_addr = reg_addr; + spin_unlock_bh(&ar->data_lock); + + return count; +} + +static const struct file_operations fops_reg_addr = { + .read = ath10k_reg_addr_read, + .write = ath10k_reg_addr_write, + .open = simple_open, + .owner = THIS_MODULE, + .llseek = default_llseek, +}; + +static ssize_t ath10k_reg_value_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath10k *ar = file->private_data; + u8 buf[48]; + unsigned int len; + u32 reg_addr, reg_val; + + spin_lock_bh(&ar->data_lock); + reg_addr = ar->debug.reg_addr; + spin_unlock_bh(&ar->data_lock); + + reg_val = ath10k_hif_read32(ar, reg_addr); + len = scnprintf(buf, sizeof(buf), "0x%08x:0x%08x\n", reg_addr, reg_val); + + return simple_read_from_buffer(user_buf, count, ppos, buf, len); +} + +static ssize_t ath10k_reg_value_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath10k *ar = file->private_data; + u32 reg_addr, reg_val; + int ret; + + spin_lock_bh(&ar->data_lock); + reg_addr = ar->debug.reg_addr; + spin_unlock_bh(&ar->data_lock); + + ret = kstrtou32_from_user(user_buf, count, 0, ®_val); + if (ret) + return ret; + + ath10k_hif_write32(ar, reg_addr, reg_val); + + return count; +} + +static const struct file_operations fops_reg_value = { + .read = ath10k_reg_value_read, + .write = ath10k_reg_value_write, + .open = simple_open, + .owner = THIS_MODULE, + .llseek = default_llseek, +}; + static int ath10k_debug_htt_stats_req(struct ath10k *ar) { u64 cookie; @@ -1629,6 +1725,12 @@ int ath10k_debug_register(struct ath10k *ar) debugfs_create_file("fw_crash_dump", S_IRUSR, ar->debug.debugfs_phy, ar, &fops_fw_crash_dump); + debugfs_create_file("reg_addr", S_IRUSR | S_IWUSR, + ar->debug.debugfs_phy, ar, &fops_reg_addr); + + debugfs_create_file("reg_value", S_IRUSR | S_IWUSR, + ar->debug.debugfs_phy, ar, &fops_reg_value); + debugfs_create_file("chip_id", S_IRUSR, ar->debug.debugfs_phy, ar, &fops_chip_id); diff --git a/drivers/net/wireless/ath/ath10k/hif.h b/drivers/net/wireless/ath/ath10k/hif.h index 30301f5b6051..bad071906540 100644 --- a/drivers/net/wireless/ath/ath10k/hif.h +++ b/drivers/net/wireless/ath/ath10k/hif.h @@ -20,6 +20,7 @@ #include #include "core.h" +#include "debug.h" struct ath10k_hif_sg_item { u16 transfer_id; @@ -84,6 +85,10 @@ struct ath10k_hif_ops { u16 (*get_free_queue_number)(struct ath10k *ar, u8 pipe_id); + u32 (*read32)(struct ath10k *ar, u32 address); + + void (*write32)(struct ath10k *ar, u32 address, u32 value); + /* Power up the device and enter BMI transfer mode for FW download */ int (*power_up)(struct ath10k *ar); @@ -187,4 +192,25 @@ static inline int ath10k_hif_resume(struct ath10k *ar) return ar->hif.ops->resume(ar); } +static inline u32 ath10k_hif_read32(struct ath10k *ar, u32 address) +{ + if (!ar->hif.ops->read32) { + ath10k_warn(ar, "hif read32 not supported\n"); + return 0xdeaddead; + } + + return ar->hif.ops->read32(ar, address); +} + +static inline void ath10k_hif_write32(struct ath10k *ar, + u32 address, u32 data) +{ + if (!ar->hif.ops->write32) { + ath10k_warn(ar, "hif write32 not supported\n"); + return; + } + + ar->hif.ops->write32(ar, address, data); +} + #endif /* _HIF_H_ */ diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c index 3a6b8a5ca96c..328ab6c5d053 100644 --- a/drivers/net/wireless/ath/ath10k/pci.c +++ b/drivers/net/wireless/ath/ath10k/pci.c @@ -1998,6 +1998,8 @@ static const struct ath10k_hif_ops ath10k_pci_hif_ops = { .get_free_queue_number = ath10k_pci_hif_get_free_queue_number, .power_up = ath10k_pci_hif_power_up, .power_down = ath10k_pci_hif_power_down, + .read32 = ath10k_pci_read32, + .write32 = ath10k_pci_write32, #ifdef CONFIG_PM .suspend = ath10k_pci_hif_suspend, .resume = ath10k_pci_hif_resume,