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a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1558506781; bh=xih2u75Xh2oTi6oW2MYjWqkYO01ltdet1FO94AJV884=; h=From:To:Cc:Subject:Date:From; b=J9OmIXFrJaKDIKVLoXkG3EUmvRrwWBxiqkevnBWfBbZXWHQmBiGFXLeR83O7ezpLJ CstVBAiUQ2aSjbMbNwGS06lZqh/KjwYMOL5YSUhk7PqSL8/JTPmf2mll7BGW0+QGtk kaPoqH3+qbVGAjNNNM3GKeHN/NarY2Z3Cw9Rdjic= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 81F666076A Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=wgong@codeaurora.org From: Wen Gong To: ath10k@lists.infradead.org Subject: [PATCH v3] ath10k: add support for firmware crash recovery on SDIO chip Date: Wed, 22 May 2019 14:32:56 +0800 Message-Id: <1558506776-19702-1-git-send-email-wgong@codeaurora.org> X-Mailer: git-send-email 1.9.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190521_233302_925044_CBF1A8D8 X-CRM114-Status: GOOD ( 12.85 ) X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-wireless@vger.kernel.org MIME-Version: 1.0 Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The command to simulate firmware crash: echo soft > /sys/kernel/debug/ieee80211/phy0/ath10k/simulate_fw_crash It will send WMI_FORCE_FW_HANG_ASSERT to firmware, then it will trigger CPU interrupt status register for SDIO chip, ath10k driver need to configure it while enable SDIO interrupt, otherwise ath10k driver will not get the assert error info. After this change, it will success for simulate firmware crash. Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1. Signed-off-by: Wen Gong Tested-by: Claire Chang Reviewed-by: Nicolas Boichat --- v3: change commit log title v2: add MBOX_CPU_STATUS_ENABLE_ASSERT_MASK for fw assert check drivers/net/wireless/ath/ath10k/hw.h | 1 + drivers/net/wireless/ath/ath10k/sdio.c | 10 ++++++++-- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h index 7131499..60521ed 100644 --- a/drivers/net/wireless/ath/ath10k/hw.h +++ b/drivers/net/wireless/ath/ath10k/hw.h @@ -1095,6 +1095,7 @@ struct ath10k_hw_ops { #define MBOX_CPU_INT_STATUS_ENABLE_ADDRESS 0x00000819 #define MBOX_CPU_INT_STATUS_ENABLE_BIT_LSB 0 #define MBOX_CPU_INT_STATUS_ENABLE_BIT_MASK 0x000000ff +#define MBOX_CPU_STATUS_ENABLE_ASSERT_MASK 0x00000001 #define MBOX_ERROR_STATUS_ENABLE_ADDRESS 0x0000081a #define MBOX_ERROR_STATUS_ENABLE_RX_UNDERFLOW_LSB 1 #define MBOX_ERROR_STATUS_ENABLE_RX_UNDERFLOW_MASK 0x00000002 diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c index fae56c6..1a3a7bf 100644 --- a/drivers/net/wireless/ath/ath10k/sdio.c +++ b/drivers/net/wireless/ath/ath10k/sdio.c @@ -850,6 +850,10 @@ static int ath10k_sdio_mbox_proc_cpu_intr(struct ath10k *ar) out: mutex_unlock(&irq_data->mtx); + if (cpu_int_status & MBOX_CPU_STATUS_ENABLE_ASSERT_MASK) { + ath10k_err(ar, "firmware crashed!\n"); + queue_work(ar->workqueue, &ar->restart_work); + } return ret; } @@ -1495,8 +1499,10 @@ static int ath10k_sdio_hif_enable_intrs(struct ath10k *ar) regs->int_status_en |= FIELD_PREP(MBOX_INT_STATUS_ENABLE_MBOX_DATA_MASK, 1); - /* Set up the CPU Interrupt status Register */ - regs->cpu_int_status_en = 0; + /* Set up the CPU Interrupt Status Register, enable CPU sourced interrupt #0 + * #0 is used for report assertion from target + */ + regs->cpu_int_status_en = FIELD_PREP(MBOX_CPU_STATUS_ENABLE_ASSERT_MASK, 1); /* Set up the Error Interrupt status Register */ regs->err_int_status_en =