From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ritesh Harjani Subject: Re: [RFC PATCH 2/3] mmc: sdhci-msm: Implement platform_dumpregs callback in sdhci-msm Date: Mon, 16 Jan 2017 07:51:40 +0530 Message-ID: <120ebd64-e643-c859-05f7-c97294925803@codeaurora.org> References: <1483097531-9991-1-git-send-email-riteshh@codeaurora.org> <1483097531-9991-3-git-send-email-riteshh@codeaurora.org> <20170113223117.GB22862@mini-rhel.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20170113223117.GB22862@mini-rhel.redhat.com> Sender: linux-kernel-owner@vger.kernel.org To: Jeremy McNicoll Cc: ulf.hansson@linaro.org, adrian.hunter@intel.com, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, shawn.lin@rock-chips.com, stummala@codeaurora.org, georgi.djakov@linaro.org, linux-arm-msm@vger.kernel.org, pramod.gurav@linaro.org, jeremymc@redhat.com, venkatg@codeaurora.org, asutoshd@codeaurora.org, subhashj@codeaurora.org List-Id: linux-mmc@vger.kernel.org Hi Jeremy, On 1/14/2017 4:01 AM, Jeremy McNicoll wrote: > On Fri, Dec 30, 2016 at 05:02:10PM +0530, Ritesh Harjani wrote: >> From: Sahitya Tummala >> >> Implement ->platform_dumpregs host operation to print the >> platform specific registers in addition to standard SDHC >> register during error conditions. >> >> Signed-off-by: Sahitya Tummala >> Signed-off-by: Ritesh Harjani >> --- >> drivers/mmc/host/sdhci-msm.c | 34 ++++++++++++++++++++++++++++++++++ >> 1 file changed, 34 insertions(+) >> >> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c >> index 32879b8..1241dbd 100644 >> --- a/drivers/mmc/host/sdhci-msm.c >> +++ b/drivers/mmc/host/sdhci-msm.c >> @@ -29,6 +29,11 @@ >> #define CORE_VERSION_MAJOR_MASK (0xf << CORE_VERSION_MAJOR_SHIFT) >> #define CORE_VERSION_MINOR_MASK 0xff >> >> +#define CORE_MCI_DATA_CNT 0x30 >> +#define CORE_MCI_STATUS 0x34 >> +#define CORE_MCI_FIFO_CNT 0x44 >> +#define CORE_MCI_STATUS2 0x6c >> + >> #define CORE_HC_MODE 0x78 >> #define HC_MODE_EN 0x1 >> #define CORE_POWER 0x0 >> @@ -77,6 +82,10 @@ >> #define CORE_HC_SELECT_IN_HS400 (6 << 19) >> #define CORE_HC_SELECT_IN_MASK (7 << 19) >> >> +#define CORE_VENDOR_SPEC_FUNC2 0x110 >> +#define CORE_VENDOR_SPEC_ADMA_ERR_ADDR0 0x114 >> +#define CORE_VENDOR_SPEC_ADMA_ERR_ADDR1 0x118 >> + >> #define CORE_CSR_CDC_CTLR_CFG0 0x130 >> #define CORE_SW_TRIG_FULL_CALIB BIT(16) >> #define CORE_HW_AUTOCAL_ENA BIT(17) >> @@ -658,6 +667,30 @@ static int sdhci_msm_hs400_dll_calibration(struct sdhci_host *host) >> return ret; >> } >> >> +static void sdhci_msm_dumpregs(struct sdhci_host *host) >> +{ >> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); >> + struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host); >> + >> + pr_err("----------- PLATFORM REGISTER DUMP -----------\n"); >> + >> + pr_err("Data cnt: 0x%08x | Fifo cnt: 0x%08x | Int sts: 0x%08x | Int sts2: 0x%08x\n", >> + readl_relaxed(msm_host->core_mem + CORE_MCI_DATA_CNT), >> + readl_relaxed(msm_host->core_mem + CORE_MCI_FIFO_CNT), >> + readl_relaxed(msm_host->core_mem + CORE_MCI_STATUS), >> + readl_relaxed(msm_host->core_mem + CORE_MCI_STATUS2)); >> + pr_err("DLL cfg: 0x%08x | DLL sts: 0x%08x | SDCC ver: 0x%08x\n", >> + readl_relaxed(host->ioaddr + CORE_DLL_CONFIG), >> + readl_relaxed(host->ioaddr + CORE_DLL_STATUS), >> + readl_relaxed(msm_host->core_mem + CORE_MCI_VERSION)); >> + pr_err("Vndr func: 0x%08x | Vndr adma err : addr0: 0x%08x addr1: 0x%08x\n", >> + readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC), >> + readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC_ADMA_ERR_ADDR0), >> + readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC_ADMA_ERR_ADDR1)); >> + pr_err("Vndr func2: 0x%08x\n", >> + readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC_FUNC2)); >> +} >> + > > Why did you omit the printing of CORE_TESTBUS_CONFIG like that of > https://patchwork.kernel.org/patch/9442449/ Actually testbus registers aren't something we analyze every-time. So I have skipped it for now. We can add it later if and when required. > > and sdhci_dump_state() was dropped too. Being able to dump the rpm_info > was very handy for issues I was running into. Sure, let me add that info as well. > > -jeremy > >> static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) >> { >> int tuning_seq_cnt = 3; >> @@ -1035,6 +1068,7 @@ static void sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock) >> .set_bus_width = sdhci_set_bus_width, >> .set_uhs_signaling = sdhci_msm_set_uhs_signaling, >> .voltage_switch = sdhci_msm_voltage_switch, >> + .platform_dumpregs = sdhci_msm_dumpregs, >> }; >> >> static const struct sdhci_pltfm_data sdhci_msm_pdata = { >> -- >> The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, >> a Linux Foundation Collaborative Project. >> -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project