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firmware: qcom: scm: add OCMEM lock/unlock interface

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Add support for the OCMEM lock/unlock interface that is needed by the
On Chip MEMory (OCMEM) that is present on some Snapdragon devices.

Signed-off-by: Rob Clark <robdclark@gmail.com>
[masneyb@onstation.org: ported to latest kernel; minor reformatting.]
Signed-off-by: Brian Masney <masneyb@onstation.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Gabriel Francisco <frc.gabrielgmail.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Rob Clark
2019-08-23 05:16:33 -07:00
committed by Rob Clark
parent 198a72c8f9
commit b0a1614fb1
5 changed files with 111 additions and 0 deletions
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40
drivers/firmware/qcom_scm.c
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@@ -191,6 +191,46 @@ bool qcom_scm_pas_supported(u32 peripheral)
}
EXPORT_SYMBOL(qcom_scm_pas_supported);
/**
* qcom_scm_ocmem_lock_available() - is OCMEM lock/unlock interface available
*/
bool qcom_scm_ocmem_lock_available(void)
{
return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_OCMEM_SVC,
QCOM_SCM_OCMEM_LOCK_CMD);
}
EXPORT_SYMBOL(qcom_scm_ocmem_lock_available);
/**
* qcom_scm_ocmem_lock() - call OCMEM lock interface to assign an OCMEM
* region to the specified initiator
*
* @id: tz initiator id
* @offset: OCMEM offset
* @size: OCMEM size
* @mode: access mode (WIDE/NARROW)
*/
int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset, u32 size,
u32 mode)
{
return __qcom_scm_ocmem_lock(__scm->dev, id, offset, size, mode);
}
EXPORT_SYMBOL(qcom_scm_ocmem_lock);
/**
* qcom_scm_ocmem_unlock() - call OCMEM unlock interface to release an OCMEM
* region from the specified initiator
*
* @id: tz initiator id
* @offset: OCMEM offset
* @size: OCMEM size
*/
int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset, u32 size)
{
return __qcom_scm_ocmem_unlock(__scm->dev, id, offset, size);
}
EXPORT_SYMBOL(qcom_scm_ocmem_unlock);
/**
* qcom_scm_pas_init_image() - Initialize peripheral authentication service
* state machine for a given peripheral, using the