Return-path: Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:50937 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757227AbcDEH3A (ORCPT ); Tue, 5 Apr 2016 03:29:00 -0400 Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u357QnBO021328 for ; Tue, 5 Apr 2016 00:28:59 -0700 Received: from sc-exch02.marvell.com ([199.233.58.182]) by mx0b-0016f401.pphosted.com with ESMTP id 222dkfh5de-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Tue, 05 Apr 2016 00:28:58 -0700 From: Amitkumar Karwar To: CC: Cathy Luo , Nishant Sarmukadam , Xinming Hu , Amitkumar Karwar Subject: [PATCH 7/7] mwifiex: dump pcie scratch registers Date: Tue, 5 Apr 2016 00:22:32 -0700 Message-ID: <1459840952-25338-7-git-send-email-akarwar@marvell.com> (sfid-20160405_092909_164281_15CF29B8) In-Reply-To: <1459840952-25338-1-git-send-email-akarwar@marvell.com> References: <1459840952-25338-1-git-send-email-akarwar@marvell.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Xinming Hu This patch prints pcie scratch registers during firmware dump. They will be useful for analysing firmware status. Signed-off-by: Xinming Hu Signed-off-by: Amitkumar Karwar --- drivers/net/wireless/marvell/mwifiex/main.c | 8 +++--- drivers/net/wireless/marvell/mwifiex/pcie.c | 42 +++++++++++++++++++++++++++++ drivers/net/wireless/marvell/mwifiex/pcie.h | 2 ++ 3 files changed, 49 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c index 3cfa946..04b975c 100644 --- a/drivers/net/wireless/marvell/mwifiex/main.c +++ b/drivers/net/wireless/marvell/mwifiex/main.c @@ -1074,12 +1074,14 @@ void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter) priv->netdev->name, priv->num_tx_timeout); } - if (adapter->iface_type == MWIFIEX_SDIO) { - p += sprintf(p, "\n=== SDIO register dump===\n"); + if (adapter->iface_type == MWIFIEX_SDIO || + adapter->iface_type == MWIFIEX_PCIE) { + p += sprintf(p, "\n=== %s register dump===\n", + adapter->iface_type == MWIFIEX_SDIO ? + "SDIO" : "PCIE"); if (adapter->if_ops.reg_dump) p += adapter->if_ops.reg_dump(adapter, p); } - p += sprintf(p, "\n=== more debug information\n"); debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL); if (debug_info) { diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c index 6a06ca5..edf8b07 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c @@ -2355,6 +2355,47 @@ static int mwifiex_pcie_host_to_card(struct mwifiex_adapter *adapter, u8 type, return 0; } +/* Function to dump PCIE scratch registers in case of FW crash + */ +static int +mwifiex_pcie_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf) +{ + char *p = drv_buf; + char buf[256], *ptr; + int i; + u32 value; + struct pcie_service_card *card = adapter->card; + const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; + int pcie_scratch_reg[] = {PCIE_SCRATCH_12_REG, + PCIE_SCRATCH_13_REG, + PCIE_SCRATCH_14_REG}; + + if (!p) + return 0; + + mwifiex_dbg(adapter, MSG, "PCIE register dump start\n"); + + if (mwifiex_read_reg(adapter, reg->fw_status, &value)) { + mwifiex_dbg(adapter, ERROR, "failed to read firmware status"); + return 0; + } + + ptr = buf; + mwifiex_dbg(adapter, MSG, "pcie scratch register:"); + for (i = 0; i < ARRAY_SIZE(pcie_scratch_reg); i++) { + mwifiex_read_reg(adapter, pcie_scratch_reg[i], &value); + ptr += sprintf(ptr, "reg:0x%x, value=0x%x\n", + pcie_scratch_reg[i], value); + } + + mwifiex_dbg(adapter, MSG, "%s\n", buf); + p += sprintf(p, "%s\n", buf); + + mwifiex_dbg(adapter, MSG, "PCIE register dump end\n"); + + return p - drv_buf; +} + /* This function read/write firmware */ static enum rdwr_status mwifiex_pcie_rdwr_firmware(struct mwifiex_adapter *adapter, u8 doneflag) @@ -2899,6 +2940,7 @@ static struct mwifiex_if_ops pcie_ops = { .cleanup_mpa_buf = NULL, .init_fw_port = mwifiex_pcie_init_fw_port, .clean_pcie_ring = mwifiex_clean_pcie_ring_buf, + .reg_dump = mwifiex_pcie_reg_dump, .device_dump = mwifiex_pcie_device_dump, }; diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.h b/drivers/net/wireless/marvell/mwifiex/pcie.h index 4455d19..cc7a5df 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.h +++ b/drivers/net/wireless/marvell/mwifiex/pcie.h @@ -73,6 +73,8 @@ #define PCIE_SCRATCH_10_REG 0xCE8 #define PCIE_SCRATCH_11_REG 0xCEC #define PCIE_SCRATCH_12_REG 0xCF0 +#define PCIE_SCRATCH_13_REG 0xCF8 +#define PCIE_SCRATCH_14_REG 0xCFC #define PCIE_RD_DATA_PTR_Q0_Q1 0xC08C #define PCIE_WR_DATA_PTR_Q0_Q1 0xC05C -- 1.8.1.4