* [PATCH 1/2] mmc: sdhci: Workaround broken command queuing on Intel GLK
@ 2019-12-17 9:53 Adrian Hunter
2019-12-17 9:53 ` [PATCH 2/2] mmc: sdhci: Add a quirk for broken command queuing Adrian Hunter
2019-12-18 14:01 ` [PATCH 1/2] mmc: sdhci: Workaround broken command queuing on Intel GLK Ulf Hansson
0 siblings, 2 replies; 4+ messages in thread
From: Adrian Hunter @ 2019-12-17 9:53 UTC (permalink / raw)
To: Ulf Hansson; +Cc: linux-mmc
Command queuing has been reported broken on some Lenovo systems based on
Intel GLK. This is likely a BIOS issue, so disable command queuing for
Intel GLK if the BIOS vendor string is "LENOVO".
Fixes: 8ee82bda230f ("mmc: sdhci-pci: Add CQHCI support for Intel GLK")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
---
drivers/mmc/host/sdhci-pci-core.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index acefb76b4e15..5091e2c1c0e5 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -27,6 +27,7 @@
#include <linux/mmc/slot-gpio.h>
#include <linux/mmc/sdhci-pci-data.h>
#include <linux/acpi.h>
+#include <linux/dmi.h>
#ifdef CONFIG_X86
#include <asm/iosf_mbi.h>
@@ -783,11 +784,18 @@ static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
return 0;
}
+static bool glk_broken_cqhci(struct sdhci_pci_slot *slot)
+{
+ return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
+ dmi_match(DMI_BIOS_VENDOR, "LENOVO");
+}
+
static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
{
int ret = byt_emmc_probe_slot(slot);
- slot->host->mmc->caps2 |= MMC_CAP2_CQE;
+ if (!glk_broken_cqhci(slot))
+ slot->host->mmc->caps2 |= MMC_CAP2_CQE;
if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) {
slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES,
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 2/2] mmc: sdhci: Add a quirk for broken command queuing
2019-12-17 9:53 [PATCH 1/2] mmc: sdhci: Workaround broken command queuing on Intel GLK Adrian Hunter
@ 2019-12-17 9:53 ` Adrian Hunter
2019-12-18 14:01 ` Ulf Hansson
2019-12-18 14:01 ` [PATCH 1/2] mmc: sdhci: Workaround broken command queuing on Intel GLK Ulf Hansson
1 sibling, 1 reply; 4+ messages in thread
From: Adrian Hunter @ 2019-12-17 9:53 UTC (permalink / raw)
To: Ulf Hansson; +Cc: linux-mmc
Command queuing has been reported broken on some systems based on Intel
GLK. A separate patch disables command queuing in some cases.
This patch adds a quirk for broken command queuing, which enables users
with problems to disable command queuing using sdhci module parameters for
quirks.
Fixes: 8ee82bda230f ("mmc: sdhci-pci: Add CQHCI support for Intel GLK")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
---
drivers/mmc/host/sdhci.c | 3 +++
drivers/mmc/host/sdhci.h | 2 ++
2 files changed, 5 insertions(+)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 3140fe2e5dba..f4540f9892ce 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -3769,6 +3769,9 @@ int sdhci_setup_host(struct sdhci_host *host)
mmc_hostname(mmc), host->version);
}
+ if (host->quirks & SDHCI_QUIRK_BROKEN_CQE)
+ mmc->caps2 &= ~MMC_CAP2_CQE;
+
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_SDMA;
else if (!(host->caps & SDHCI_CAN_DO_SDMA))
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 0ed3e0eaef5f..fe83ece6965b 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -409,6 +409,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15)
/* Controller reports inverted write-protect state */
#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16)
+/* Controller has unusable command queue engine */
+#define SDHCI_QUIRK_BROKEN_CQE (1<<17)
/* Controller does not like fast PIO transfers */
#define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18)
/* Controller does not have a LED */
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH 2/2] mmc: sdhci: Add a quirk for broken command queuing
2019-12-17 9:53 ` [PATCH 2/2] mmc: sdhci: Add a quirk for broken command queuing Adrian Hunter
@ 2019-12-18 14:01 ` Ulf Hansson
0 siblings, 0 replies; 4+ messages in thread
From: Ulf Hansson @ 2019-12-18 14:01 UTC (permalink / raw)
To: Adrian Hunter; +Cc: linux-mmc
On Tue, 17 Dec 2019 at 10:54, Adrian Hunter <adrian.hunter@intel.com> wrote:
>
> Command queuing has been reported broken on some systems based on Intel
> GLK. A separate patch disables command queuing in some cases.
>
> This patch adds a quirk for broken command queuing, which enables users
> with problems to disable command queuing using sdhci module parameters for
> quirks.
>
> Fixes: 8ee82bda230f ("mmc: sdhci-pci: Add CQHCI support for Intel GLK")
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> Cc: stable@vger.kernel.org
Applied for fixes, thanks!
Kind regards
Uffe
> ---
> drivers/mmc/host/sdhci.c | 3 +++
> drivers/mmc/host/sdhci.h | 2 ++
> 2 files changed, 5 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> index 3140fe2e5dba..f4540f9892ce 100644
> --- a/drivers/mmc/host/sdhci.c
> +++ b/drivers/mmc/host/sdhci.c
> @@ -3769,6 +3769,9 @@ int sdhci_setup_host(struct sdhci_host *host)
> mmc_hostname(mmc), host->version);
> }
>
> + if (host->quirks & SDHCI_QUIRK_BROKEN_CQE)
> + mmc->caps2 &= ~MMC_CAP2_CQE;
> +
> if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
> host->flags |= SDHCI_USE_SDMA;
> else if (!(host->caps & SDHCI_CAN_DO_SDMA))
> diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
> index 0ed3e0eaef5f..fe83ece6965b 100644
> --- a/drivers/mmc/host/sdhci.h
> +++ b/drivers/mmc/host/sdhci.h
> @@ -409,6 +409,8 @@ struct sdhci_host {
> #define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15)
> /* Controller reports inverted write-protect state */
> #define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16)
> +/* Controller has unusable command queue engine */
> +#define SDHCI_QUIRK_BROKEN_CQE (1<<17)
> /* Controller does not like fast PIO transfers */
> #define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18)
> /* Controller does not have a LED */
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 1/2] mmc: sdhci: Workaround broken command queuing on Intel GLK
2019-12-17 9:53 [PATCH 1/2] mmc: sdhci: Workaround broken command queuing on Intel GLK Adrian Hunter
2019-12-17 9:53 ` [PATCH 2/2] mmc: sdhci: Add a quirk for broken command queuing Adrian Hunter
@ 2019-12-18 14:01 ` Ulf Hansson
1 sibling, 0 replies; 4+ messages in thread
From: Ulf Hansson @ 2019-12-18 14:01 UTC (permalink / raw)
To: Adrian Hunter; +Cc: linux-mmc
On Tue, 17 Dec 2019 at 10:54, Adrian Hunter <adrian.hunter@intel.com> wrote:
>
> Command queuing has been reported broken on some Lenovo systems based on
> Intel GLK. This is likely a BIOS issue, so disable command queuing for
> Intel GLK if the BIOS vendor string is "LENOVO".
>
> Fixes: 8ee82bda230f ("mmc: sdhci-pci: Add CQHCI support for Intel GLK")
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> Cc: stable@vger.kernel.org
Applied for fixes, thanks!
Kind regards
Uffe
> ---
> drivers/mmc/host/sdhci-pci-core.c | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
> index acefb76b4e15..5091e2c1c0e5 100644
> --- a/drivers/mmc/host/sdhci-pci-core.c
> +++ b/drivers/mmc/host/sdhci-pci-core.c
> @@ -27,6 +27,7 @@
> #include <linux/mmc/slot-gpio.h>
> #include <linux/mmc/sdhci-pci-data.h>
> #include <linux/acpi.h>
> +#include <linux/dmi.h>
>
> #ifdef CONFIG_X86
> #include <asm/iosf_mbi.h>
> @@ -783,11 +784,18 @@ static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
> return 0;
> }
>
> +static bool glk_broken_cqhci(struct sdhci_pci_slot *slot)
> +{
> + return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
> + dmi_match(DMI_BIOS_VENDOR, "LENOVO");
> +}
> +
> static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
> {
> int ret = byt_emmc_probe_slot(slot);
>
> - slot->host->mmc->caps2 |= MMC_CAP2_CQE;
> + if (!glk_broken_cqhci(slot))
> + slot->host->mmc->caps2 |= MMC_CAP2_CQE;
>
> if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) {
> slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES,
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-12-18 14:02 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2019-12-17 9:53 [PATCH 1/2] mmc: sdhci: Workaround broken command queuing on Intel GLK Adrian Hunter
2019-12-17 9:53 ` [PATCH 2/2] mmc: sdhci: Add a quirk for broken command queuing Adrian Hunter
2019-12-18 14:01 ` Ulf Hansson
2019-12-18 14:01 ` [PATCH 1/2] mmc: sdhci: Workaround broken command queuing on Intel GLK Ulf Hansson
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