Re: [PATCH v5 2/2] firmware: QCOM_SCM: Allow qcom_scm driver to be loadable as a permenent module

2020-11-05 Thread Bjorn Andersson
On Fri 30 Oct 19:38 CDT 2020, John Stultz wrote:

> Allow the qcom_scm driver to be loadable as a permenent module.
> 
> This still uses the "depends on QCOM_SCM || !QCOM_SCM" bit to
> ensure that drivers that call into the qcom_scm driver are
> also built as modules. While not ideal in some cases its the
> only safe way I can find to avoid build errors without having
> those drivers select QCOM_SCM and have to force it on (as
> QCOM_SCM=n can be valid for those drivers).
> 
> Cc: Catalin Marinas 
> Cc: Will Deacon 
> Cc: Andy Gross 
> Cc: Bjorn Andersson 
> Cc: Joerg Roedel 
> Cc: Thomas Gleixner 
> Cc: Jason Cooper 
> Cc: Marc Zyngier 
> Cc: Linus Walleij 
> Cc: Vinod Koul 
> Cc: Kalle Valo 
> Cc: Maulik Shah 
> Cc: Lina Iyer 
> Cc: Saravana Kannan 
> Cc: Todd Kjos 
> Cc: Greg Kroah-Hartman 
> Cc: linux-arm-...@vger.kernel.org
> Cc: iommu@lists.linux-foundation.org
> Cc: linux-g...@vger.kernel.org
> Acked-by: Greg Kroah-Hartman 
> Signed-off-by: John Stultz 

Reviewed-by: Bjorn Andersson 

Regards,
Bjorn

> ---
> v3:
> * Fix __arm_smccc_smc build issue reported by
>   kernel test robot 
> v4:
> * Add "depends on QCOM_SCM || !QCOM_SCM" bit to ath10k
>   config that requires it.
> v5:
> * Fix QCOM_QCM typo in Kconfig, it should be QCOM_SCM
> ---
>  drivers/firmware/Kconfig| 4 ++--
>  drivers/firmware/Makefile   | 3 ++-
>  drivers/firmware/qcom_scm.c | 4 
>  drivers/iommu/Kconfig   | 2 ++
>  drivers/net/wireless/ath/ath10k/Kconfig | 1 +
>  5 files changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
> index 3315e3c215864..5e369928bc567 100644
> --- a/drivers/firmware/Kconfig
> +++ b/drivers/firmware/Kconfig
> @@ -235,8 +235,8 @@ config INTEL_STRATIX10_RSU
> Say Y here if you want Intel RSU support.
>  
>  config QCOM_SCM
> - bool
> - depends on ARM || ARM64
> + tristate "Qcom SCM driver"
> + depends on (ARM && HAVE_ARM_SMCCC) || ARM64
>   select RESET_CONTROLLER
>  
>  config QCOM_SCM_DOWNLOAD_MODE_DEFAULT
> diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
> index 5e013b6a3692e..523173cbff335 100644
> --- a/drivers/firmware/Makefile
> +++ b/drivers/firmware/Makefile
> @@ -17,7 +17,8 @@ obj-$(CONFIG_ISCSI_IBFT)+= iscsi_ibft.o
>  obj-$(CONFIG_FIRMWARE_MEMMAP)+= memmap.o
>  obj-$(CONFIG_RASPBERRYPI_FIRMWARE) += raspberrypi.o
>  obj-$(CONFIG_FW_CFG_SYSFS)   += qemu_fw_cfg.o
> -obj-$(CONFIG_QCOM_SCM)   += qcom_scm.o qcom_scm-smc.o 
> qcom_scm-legacy.o
> +obj-$(CONFIG_QCOM_SCM)   += qcom-scm.o
> +qcom-scm-objs += qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o
>  obj-$(CONFIG_TI_SCI_PROTOCOL)+= ti_sci.o
>  obj-$(CONFIG_TRUSTED_FOUNDATIONS) += trusted_foundations.o
>  obj-$(CONFIG_TURRIS_MOX_RWTM)+= turris-mox-rwtm.o
> diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
> index 7be48c1bec96d..6f431b73e617d 100644
> --- a/drivers/firmware/qcom_scm.c
> +++ b/drivers/firmware/qcom_scm.c
> @@ -1280,6 +1280,7 @@ static const struct of_device_id qcom_scm_dt_match[] = {
>   { .compatible = "qcom,scm" },
>   {}
>  };
> +MODULE_DEVICE_TABLE(of, qcom_scm_dt_match);
>  
>  static struct platform_driver qcom_scm_driver = {
>   .driver = {
> @@ -1295,3 +1296,6 @@ static int __init qcom_scm_init(void)
>   return platform_driver_register(_scm_driver);
>  }
>  subsys_initcall(qcom_scm_init);
> +
> +MODULE_DESCRIPTION("Qualcomm Technologies, Inc. SCM driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
> index 04878caf6da49..c64d7a2b65134 100644
> --- a/drivers/iommu/Kconfig
> +++ b/drivers/iommu/Kconfig
> @@ -248,6 +248,7 @@ config SPAPR_TCE_IOMMU
>  config ARM_SMMU
>   tristate "ARM Ltd. System MMU (SMMU) Support"
>   depends on ARM64 || ARM || (COMPILE_TEST && !GENERIC_ATOMIC64)
> + depends on QCOM_SCM || !QCOM_SCM #if QCOM_SCM=m this can't be =y
>   select IOMMU_API
>   select IOMMU_IO_PGTABLE_LPAE
>   select ARM_DMA_USE_IOMMU if ARM
> @@ -375,6 +376,7 @@ config QCOM_IOMMU
>   # Note: iommu drivers cannot (yet?) be built as modules
>   bool "Qualcomm IOMMU Support"
>   depends on ARCH_QCOM || (COMPILE_TEST && !GENERIC_ATOMIC64)
> + depends on QCOM_SCM=y
>   select IOMMU_API
>   select IOMMU_IO_PGTABLE_LPAE
>   select ARM_DMA_USE_IOMMU
> diff --git a/drivers/net/wireless/ath/ath10k/Kconfig 
> b/drivers/net/wireless/ath/ath10k/Kconfig
> index 40f91bc8514d8..741289e385d59 100644
> --- a/drivers/net/wireless/ath/ath10k/Kconfig
> +++ b/drivers/net/wireless/ath/ath10k/Kconfig
> @@ -44,6 +44,7 @@ config ATH10K_SNOC
>   tristate "Qualcomm ath10k SNOC support"
>   depends on ATH10K
>   depends on ARCH_QCOM || COMPILE_TEST
> + depends on QCOM_SCM || !QCOM_SCM #if QCOM_SCM=m this can't be =y
>   select QCOM_QMI_HELPERS
>   help
> This module adds support for 

Re: [PATCH v5 2/2] firmware: QCOM_SCM: Allow qcom_scm driver to be loadable as a permenent module

2020-11-01 Thread Kalle Valo
+ ath10k list

John Stultz  writes:

> Allow the qcom_scm driver to be loadable as a permenent module.
>
> This still uses the "depends on QCOM_SCM || !QCOM_SCM" bit to
> ensure that drivers that call into the qcom_scm driver are
> also built as modules. While not ideal in some cases its the
> only safe way I can find to avoid build errors without having
> those drivers select QCOM_SCM and have to force it on (as
> QCOM_SCM=n can be valid for those drivers).
>
> Cc: Catalin Marinas 
> Cc: Will Deacon 
> Cc: Andy Gross 
> Cc: Bjorn Andersson 
> Cc: Joerg Roedel 
> Cc: Thomas Gleixner 
> Cc: Jason Cooper 
> Cc: Marc Zyngier 
> Cc: Linus Walleij 
> Cc: Vinod Koul 
> Cc: Kalle Valo 
> Cc: Maulik Shah 
> Cc: Lina Iyer 
> Cc: Saravana Kannan 
> Cc: Todd Kjos 
> Cc: Greg Kroah-Hartman 
> Cc: linux-arm-...@vger.kernel.org
> Cc: iommu@lists.linux-foundation.org
> Cc: linux-g...@vger.kernel.org
> Acked-by: Greg Kroah-Hartman 
> Signed-off-by: John Stultz 
> ---
> v3:
> * Fix __arm_smccc_smc build issue reported by
>   kernel test robot 
> v4:
> * Add "depends on QCOM_SCM || !QCOM_SCM" bit to ath10k
>   config that requires it.
> v5:
> * Fix QCOM_QCM typo in Kconfig, it should be QCOM_SCM
> ---
>  drivers/firmware/Kconfig| 4 ++--
>  drivers/firmware/Makefile   | 3 ++-
>  drivers/firmware/qcom_scm.c | 4 
>  drivers/iommu/Kconfig   | 2 ++
>  drivers/net/wireless/ath/ath10k/Kconfig | 1 +
>  5 files changed, 11 insertions(+), 3 deletions(-)

For ath10k part:

Acked-by: Kalle Valo 

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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[PATCH v5 2/2] firmware: QCOM_SCM: Allow qcom_scm driver to be loadable as a permenent module

2020-10-30 Thread John Stultz
Allow the qcom_scm driver to be loadable as a permenent module.

This still uses the "depends on QCOM_SCM || !QCOM_SCM" bit to
ensure that drivers that call into the qcom_scm driver are
also built as modules. While not ideal in some cases its the
only safe way I can find to avoid build errors without having
those drivers select QCOM_SCM and have to force it on (as
QCOM_SCM=n can be valid for those drivers).

Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Andy Gross 
Cc: Bjorn Andersson 
Cc: Joerg Roedel 
Cc: Thomas Gleixner 
Cc: Jason Cooper 
Cc: Marc Zyngier 
Cc: Linus Walleij 
Cc: Vinod Koul 
Cc: Kalle Valo 
Cc: Maulik Shah 
Cc: Lina Iyer 
Cc: Saravana Kannan 
Cc: Todd Kjos 
Cc: Greg Kroah-Hartman 
Cc: linux-arm-...@vger.kernel.org
Cc: iommu@lists.linux-foundation.org
Cc: linux-g...@vger.kernel.org
Acked-by: Greg Kroah-Hartman 
Signed-off-by: John Stultz 
---
v3:
* Fix __arm_smccc_smc build issue reported by
  kernel test robot 
v4:
* Add "depends on QCOM_SCM || !QCOM_SCM" bit to ath10k
  config that requires it.
v5:
* Fix QCOM_QCM typo in Kconfig, it should be QCOM_SCM
---
 drivers/firmware/Kconfig| 4 ++--
 drivers/firmware/Makefile   | 3 ++-
 drivers/firmware/qcom_scm.c | 4 
 drivers/iommu/Kconfig   | 2 ++
 drivers/net/wireless/ath/ath10k/Kconfig | 1 +
 5 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 3315e3c215864..5e369928bc567 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -235,8 +235,8 @@ config INTEL_STRATIX10_RSU
  Say Y here if you want Intel RSU support.
 
 config QCOM_SCM
-   bool
-   depends on ARM || ARM64
+   tristate "Qcom SCM driver"
+   depends on (ARM && HAVE_ARM_SMCCC) || ARM64
select RESET_CONTROLLER
 
 config QCOM_SCM_DOWNLOAD_MODE_DEFAULT
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 5e013b6a3692e..523173cbff335 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -17,7 +17,8 @@ obj-$(CONFIG_ISCSI_IBFT)  += iscsi_ibft.o
 obj-$(CONFIG_FIRMWARE_MEMMAP)  += memmap.o
 obj-$(CONFIG_RASPBERRYPI_FIRMWARE) += raspberrypi.o
 obj-$(CONFIG_FW_CFG_SYSFS) += qemu_fw_cfg.o
-obj-$(CONFIG_QCOM_SCM) += qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o
+obj-$(CONFIG_QCOM_SCM) += qcom-scm.o
+qcom-scm-objs += qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o
 obj-$(CONFIG_TI_SCI_PROTOCOL)  += ti_sci.o
 obj-$(CONFIG_TRUSTED_FOUNDATIONS) += trusted_foundations.o
 obj-$(CONFIG_TURRIS_MOX_RWTM)  += turris-mox-rwtm.o
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index 7be48c1bec96d..6f431b73e617d 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -1280,6 +1280,7 @@ static const struct of_device_id qcom_scm_dt_match[] = {
{ .compatible = "qcom,scm" },
{}
 };
+MODULE_DEVICE_TABLE(of, qcom_scm_dt_match);
 
 static struct platform_driver qcom_scm_driver = {
.driver = {
@@ -1295,3 +1296,6 @@ static int __init qcom_scm_init(void)
return platform_driver_register(_scm_driver);
 }
 subsys_initcall(qcom_scm_init);
+
+MODULE_DESCRIPTION("Qualcomm Technologies, Inc. SCM driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 04878caf6da49..c64d7a2b65134 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -248,6 +248,7 @@ config SPAPR_TCE_IOMMU
 config ARM_SMMU
tristate "ARM Ltd. System MMU (SMMU) Support"
depends on ARM64 || ARM || (COMPILE_TEST && !GENERIC_ATOMIC64)
+   depends on QCOM_SCM || !QCOM_SCM #if QCOM_SCM=m this can't be =y
select IOMMU_API
select IOMMU_IO_PGTABLE_LPAE
select ARM_DMA_USE_IOMMU if ARM
@@ -375,6 +376,7 @@ config QCOM_IOMMU
# Note: iommu drivers cannot (yet?) be built as modules
bool "Qualcomm IOMMU Support"
depends on ARCH_QCOM || (COMPILE_TEST && !GENERIC_ATOMIC64)
+   depends on QCOM_SCM=y
select IOMMU_API
select IOMMU_IO_PGTABLE_LPAE
select ARM_DMA_USE_IOMMU
diff --git a/drivers/net/wireless/ath/ath10k/Kconfig 
b/drivers/net/wireless/ath/ath10k/Kconfig
index 40f91bc8514d8..741289e385d59 100644
--- a/drivers/net/wireless/ath/ath10k/Kconfig
+++ b/drivers/net/wireless/ath/ath10k/Kconfig
@@ -44,6 +44,7 @@ config ATH10K_SNOC
tristate "Qualcomm ath10k SNOC support"
depends on ATH10K
depends on ARCH_QCOM || COMPILE_TEST
+   depends on QCOM_SCM || !QCOM_SCM #if QCOM_SCM=m this can't be =y
select QCOM_QMI_HELPERS
help
  This module adds support for integrated WCN3990 chip connected
-- 
2.17.1

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