Re: [PATCH v8 01/10] firmware: qcom_scm: Fix to allow COMPILE_TEST-ing

Hans Verkuil
2017-05-05T14:30:29Z

On 05/05/2017 03:23 PM, Stanimir Varbanov wrote:
> Hi Hans,
>
> On 05/05/2017 02:34 PM, Hans Verkuil wrote:
>> On 04/28/17 11:13, Stanimir Varbanov wrote:
>>> Unfortunatly previous attempt to allow consumer drivers to
>>> use COMPILE_TEST option in Kconfig is not enough, because in the
>>> past the consumer drivers used 'depends on' Kconfig option but
>>> now they are using 'select' Kconfig option which means on non ARM
>>> arch'es compilation is triggered. Thus we need to move the ifdefery
>>> one level below by touching the private qcom_scm.h header.
>>>
>>> To: Andy Gross <andy.gross@linaro.org>
>>> Cc: Stephen Boyd <sboyd@codeaurora.org>
>>> Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
>>> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
>>> ---
>>> drivers/firmware/Kconfig | 2 +-
>>> drivers/firmware/qcom_scm.h | 72 ++++++++++++++++++++++++++++++++++++++-------
>>> include/linux/qcom_scm.h | 32 --------------------
>>> 3 files changed, 62 insertions(+), 44 deletions(-)
>>>
>>> diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
>>> index 6e4ed5a9c6fd..480578c3691a 100644
>>> --- a/drivers/firmware/Kconfig
>>> +++ b/drivers/firmware/Kconfig
>>> @@ -204,7 +204,7 @@ config FW_CFG_SYSFS_CMDLINE
>>>
>>> config QCOM_SCM
>>> bool
>>> - depends on ARM || ARM64
>>> + depends on ARM || ARM64 || COMPILE_TEST
>>> select RESET_CONTROLLER
>>>
>>> config QCOM_SCM_32
>>> diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
>>> index 9bea691f30fb..d2b5723afb3f 100644
>>> --- a/drivers/firmware/qcom_scm.h
>>> +++ b/drivers/firmware/qcom_scm.h
>>> @@ -12,6 +12,7 @@
>>> #ifndef __QCOM_SCM_INT_H
>>> #define __QCOM_SCM_INT_H
>>>
>>> +#if IS_ENABLED(CONFIG_ARM) || IS_ENABLED(CONFIG_ARM64)
>>
>> This is weird. Shouldn't this be:
>>
>> #if IS_ENABLED(CONFIG_QCOM_SCM)
>
> I think no, because if you take a look in the above hunk which adding
> COMPILE_TEST in the QCOM_SCM config the CONFIG_QCOM_SCM will be enabled
> if compile testing is selected for example on x86 build target.

My apologies, just ignore my comment. I missed that QCOM_SCM is automatically
configured and not manually.

This patch is fine.

Regards,

Hans

>
>>
>> If the code in the actual source only works for ARM, then that should be
>> handled in that source code, and not in this header IMHO.
>
> Do you mean adding #ifdef in the source file? IMO this will become a
> bigger mess.
>
>>
>> Regards,
>>
>> Hans
>>
>>> #define QCOM_SCM_SVC_BOOT 0x1
>>> #define QCOM_SCM_BOOT_ADDR 0x1
>>> #define QCOM_SCM_BOOT_ADDR_MC 0x11
>>> @@ -58,6 +59,66 @@ extern int __qcom_scm_pas_auth_and_reset(struct device *dev, u32 peripheral);
>>> extern int __qcom_scm_pas_shutdown(struct device *dev, u32 peripheral);
>>> extern int __qcom_scm_pas_mss_reset(struct device *dev, bool reset);
>>>
>>> +#define QCOM_SCM_SVC_MP 0xc
>>> +#define QCOM_SCM_RESTORE_SEC_CFG 2
>>> +extern int __qcom_scm_restore_sec_cfg(struct device *dev, u32 device_id,
>>> + u32 spare);
>>> +#define QCOM_SCM_IOMMU_SECURE_PTBL_SIZE 3
>>> +#define QCOM_SCM_IOMMU_SECURE_PTBL_INIT 4
>>> +extern int __qcom_scm_iommu_secure_ptbl_size(struct device *dev, u32 spare,
>>> + size_t *size);
>>> +extern int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr,
>>> + u32 size, u32 spare);
>>> +#else
>>> +static inline int __qcom_scm_set_remote_state(struct device *dev, u32 state,
>>> + u32 id)
>>> +{ return -ENODEV; }
>>> +static inline int __qcom_scm_set_warm_boot_addr(struct device *dev, void *entry,
>>> + const cpumask_t *cpus)
>>> +{ return -ENODEV; }
>>> +static inline int __qcom_scm_set_cold_boot_addr(void *entry,
>>> + const cpumask_t *cpus)
>>> +{ return -ENODEV; }
>>> +static inline void __qcom_scm_cpu_power_down(u32 flags) {}
>>> +static inline int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
>>> + u32 cmd_id)
>>> +{ return -ENODEV; }
>>> +#define QCOM_SCM_SVC_HDCP 0x11
>>> +#define QCOM_SCM_CMD_HDCP 0x01
>>> +static inline int __qcom_scm_hdcp_req(struct device *dev,
>>> + struct qcom_scm_hdcp_req *req,
>>> + u32 req_cnt, u32 *resp)
>>> +{ return -ENODEV; }
>>> +static inline void __qcom_scm_init(void) {}
>>> +#define QCOM_SCM_SVC_PIL 0x2
>>> +#define QCOM_SCM_PAS_IS_SUPPORTED_CMD 0x7
>>> +static inline bool __qcom_scm_pas_supported(struct device *dev, u32 peripheral)
>>> +{ return false; }
>>> +static inline int __qcom_scm_pas_init_image(struct device *dev, u32 peripheral,
>>> + dma_addr_t metadata_phys)
>>> +{ return -ENODEV; }
>>> +static inline int __qcom_scm_pas_mem_setup(struct device *dev, u32 peripheral,
>>> + phys_addr_t addr, phys_addr_t size)
>>> +{ return -ENODEV; }
>>> +static inline int __qcom_scm_pas_auth_and_reset(struct device *dev,
>>> + u32 peripheral)
>>> +{ return -ENODEV; }
>>> +static inline int __qcom_scm_pas_shutdown(struct device *dev, u32 peripheral)
>>> +{ return -ENODEV; }
>>> +static inline int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
>>> +{ return -ENODEV; }
>>> +static inline int __qcom_scm_restore_sec_cfg(struct device *dev, u32 device_id,
>>> + u32 spare)
>>> +{ return -ENODEV; }
>>> +extern int __qcom_scm_iommu_secure_ptbl_size(struct device *dev, u32 spare,
>>> + size_t *size)
>>> +{ return -ENODEV; }
>>> +static inline int __qcom_scm_iommu_secure_ptbl_init(struct device *dev,
>>> + u64 addr, u32 size,
>>> + u32 spare)
>>> +{ return -ENODEV; }
>>> +#endif
>>> +
>>> /* common error codes */
>>> #define QCOM_SCM_V2_EBUSY -12
>>> #define QCOM_SCM_ENOMEM -5
>>> @@ -85,15 +146,4 @@ static inline int qcom_scm_remap_error(int err)
>>> return -EINVAL;
>>> }
>>>
>>> -#define QCOM_SCM_SVC_MP 0xc
>>> -#define QCOM_SCM_RESTORE_SEC_CFG 2
>>> -extern int __qcom_scm_restore_sec_cfg(struct device *dev, u32 device_id,
>>> - u32 spare);
>>> -#define QCOM_SCM_IOMMU_SECURE_PTBL_SIZE 3
>>> -#define QCOM_SCM_IOMMU_SECURE_PTBL_INIT 4
>>> -extern int __qcom_scm_iommu_secure_ptbl_size(struct device *dev, u32 spare,
>>> - size_t *size);
>>> -extern int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr,
>>> - u32 size, u32 spare);
>>> -
>>> #endif
>>> diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h
>>> index e5380471c2cd..b628f735f355 100644
>>> --- a/include/linux/qcom_scm.h
>>> +++ b/include/linux/qcom_scm.h
>>> @@ -23,7 +23,6 @@ struct qcom_scm_hdcp_req {
>>> u32 val;
>>> };
>>>
>>> -#if IS_ENABLED(CONFIG_QCOM_SCM)
>>> extern int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
>>> extern int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus);
>>> extern bool qcom_scm_is_available(void);
>>> @@ -43,35 +42,4 @@ extern int qcom_scm_set_remote_state(u32 state, u32 id);
>>> extern int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare);
>>> extern int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size);
>>> extern int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare);
>>> -#else
>>> -static inline
>>> -int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
>>> -{
>>> - return -ENODEV;
>>> -}
>>> -static inline
>>> -int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
>>> -{
>>> - return -ENODEV;
>>> -}
>>> -static inline bool qcom_scm_is_available(void) { return false; }
>>> -static inline bool qcom_scm_hdcp_available(void) { return false; }
>>> -static inline int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
>>> - u32 *resp) { return -ENODEV; }
>>> -static inline bool qcom_scm_pas_supported(u32 peripheral) { return false; }
>>> -static inline int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
>>> - size_t size) { return -ENODEV; }
>>> -static inline int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
>>> - phys_addr_t size) { return -ENODEV; }
>>> -static inline int
>>> -qcom_scm_pas_auth_and_reset(u32 peripheral) { return -ENODEV; }
>>> -static inline int qcom_scm_pas_shutdown(u32 peripheral) { return -ENODEV; }
>>> -static inline void qcom_scm_cpu_power_down(u32 flags) {}
>>> -static inline u32 qcom_scm_get_version(void) { return 0; }
>>> -static inline u32
>>> -qcom_scm_set_remote_state(u32 state,u32 id) { return -ENODEV; }
>>> -static inline int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare) { return -ENODEV; }
>>> -static inline int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size) { return -ENODEV; }
>>> -static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare) { return -ENODEV; }
>>> -#endif
>>> #endif
>>>
>>
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