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Re: [RFC PATCH 2/3] mmc: sdhci-msm: Implement platform_dumpregs callback in sdhci-msm

Started byJeremy McNicoll <jmcnicol@redhat.com>
First post2017-01-13 23:40 +0100
Last post2017-01-16 06:30 +0100
Articles 3 — 2 participants

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  Re: [RFC PATCH 2/3] mmc: sdhci-msm: Implement platform_dumpregs  callback in sdhci-msm Jeremy McNicoll <jmcnicol@redhat.com> - 2017-01-13 23:40 +0100
    Re: [RFC PATCH 2/3] mmc: sdhci-msm: Implement platform_dumpregs  callback in sdhci-msm Ritesh Harjani <riteshh@codeaurora.org> - 2017-01-16 03:30 +0100
      Re: [RFC PATCH 2/3] mmc: sdhci-msm: Implement platform_dumpregs  callback in sdhci-msm Jeremy McNicoll <jmcnicol@redhat.com> - 2017-01-16 06:30 +0100

#1558781 — Re: [RFC PATCH 2/3] mmc: sdhci-msm: Implement platform_dumpregs callback in sdhci-msm

FromJeremy McNicoll <jmcnicol@redhat.com>
Date2017-01-13 23:40 +0100
SubjectRe: [RFC PATCH 2/3] mmc: sdhci-msm: Implement platform_dumpregs callback in sdhci-msm
Message-ID<sZiFQ-6v3-29@gated-at.bofh.it>
On Fri, Dec 30, 2016 at 05:02:10PM +0530, Ritesh Harjani wrote:
> From: Sahitya Tummala <stummala@codeaurora.org>
> 
> 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 <stummala@codeaurora.org>
> Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
> ---
>  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/

and sdhci_dump_state() was dropped too.  Being able to dump the rpm_info
was very handy for issues I was running into.

-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.
>

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#1559397

FromRitesh Harjani <riteshh@codeaurora.org>
Date2017-01-16 03:30 +0100
Message-ID<t05dv-2ad-3@gated-at.bofh.it>
In reply to#1558781
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 <stummala@codeaurora.org>
>>
>> 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 <stummala@codeaurora.org>
>> Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
>> ---
>>  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

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#1559448

FromJeremy McNicoll <jmcnicol@redhat.com>
Date2017-01-16 06:30 +0100
Message-ID<t081I-49t-5@gated-at.bofh.it>
In reply to#1559397
On Mon, Jan 16, 2017 at 07:51:40AM +0530, Ritesh Harjani wrote:
> 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 <stummala@codeaurora.org>
> >>
> >>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 <stummala@codeaurora.org>
> >>Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
> >>---
> >> 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.
> 

Sounds reasonable.  

> 
> >
> >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.
> 

Great, as it was useful when I was debugging SDHCI enablement. 

-jeremy

> >
> >-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

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