[4/6] firmware: qcom: scm: add OCMEM lock/unlock interface

Submitted by Brian Masney on June 16, 2019, 1:29 p.m.

Details

Message ID 20190616132930.6942-5-masneyb@onstation.org
State New
Headers show
Series "qcom: add OCMEM support" ( rev: 1 ) in Freedreno

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Commit Message

Brian Masney June 16, 2019, 1:29 p.m.
From: Rob Clark <robdclark@gmail.com>

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>
---
Rob's last version of this patch:
https://patchwork.kernel.org/patch/7340711/

 drivers/firmware/qcom_scm-32.c | 35 +++++++++++++++++++++++++++++
 drivers/firmware/qcom_scm-64.c | 12 ++++++++++
 drivers/firmware/qcom_scm.c    | 40 ++++++++++++++++++++++++++++++++++
 drivers/firmware/qcom_scm.h    |  9 ++++++++
 include/linux/qcom_scm.h       | 15 +++++++++++++
 5 files changed, 111 insertions(+)

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diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c
index 089b47124933..0100c82b9c00 100644
--- a/drivers/firmware/qcom_scm-32.c
+++ b/drivers/firmware/qcom_scm-32.c
@@ -463,6 +463,41 @@  int __qcom_scm_restore_sec_config(struct device *dev, u32 sec_id,
 	return 0;
 }
 
+int __qcom_scm_ocmem_lock(struct device *dev, u32 id, u32 offset, u32 size,
+			  u32 mode)
+{
+	struct ocmem_tz_lock {
+		__le32 id;
+		__le32 offset;
+		__le32 size;
+		__le32 mode;
+	} request;
+
+	request.id = cpu_to_le32(id);
+	request.offset = cpu_to_le32(offset);
+	request.size = cpu_to_le32(size);
+	request.mode = cpu_to_le32(mode);
+
+	return qcom_scm_call(dev, QCOM_SCM_OCMEM_SVC, QCOM_SCM_OCMEM_LOCK_CMD,
+			     &request, sizeof(request), NULL, 0);
+}
+
+int __qcom_scm_ocmem_unlock(struct device *dev, u32 id, u32 offset, u32 size)
+{
+	struct ocmem_tz_unlock {
+		__le32 id;
+		__le32 offset;
+		__le32 size;
+	} request;
+
+	request.id = cpu_to_le32(id);
+	request.offset = cpu_to_le32(offset);
+	request.size = cpu_to_le32(size);
+
+	return qcom_scm_call(dev, QCOM_SCM_OCMEM_SVC, QCOM_SCM_OCMEM_UNLOCK_CMD,
+			     &request, sizeof(request), NULL, 0);
+}
+
 void __qcom_scm_init(void)
 {
 }
diff --git a/drivers/firmware/qcom_scm-64.c b/drivers/firmware/qcom_scm-64.c
index b6b78da7f9c9..2674d6d3cdde 100644
--- a/drivers/firmware/qcom_scm-64.c
+++ b/drivers/firmware/qcom_scm-64.c
@@ -247,6 +247,18 @@  int __qcom_scm_restore_sec_config(struct device *dev, u32 sec_id,
 	return -ENOTSUPP;
 }
 
+int __qcom_scm_ocmem_lock(struct device *dev, uint32_t id, uint32_t offset,
+			  uint32_t size, uint32_t mode)
+{
+	return -ENOTSUPP;
+}
+
+int __qcom_scm_ocmem_unlock(struct device *dev, uint32_t id, uint32_t offset,
+			    uint32_t size)
+{
+	return -ENOTSUPP;
+}
+
 void __qcom_scm_init(void)
 {
 	u64 cmd;
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index 5495ef994c5d..85afb54defd4 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -193,6 +193,46 @@  int qcom_scm_restore_sec_config(struct device *dev,
 }
 EXPORT_SYMBOL(qcom_scm_restore_sec_config);
 
+/**
+ * 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_supported() - Check if the peripheral authentication service is
  *			      available for the given peripherial
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index bccc7d10c5c2..387e3c4e33c5 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -48,6 +48,15 @@  extern void __qcom_scm_init(void);
 extern int __qcom_scm_restore_sec_config(struct device *dev, u32 sec_id,
 					 u32 ctx_bank_num);
 
+#define QCOM_SCM_OCMEM_SVC			0xf
+#define QCOM_SCM_OCMEM_LOCK_CMD		0x1
+#define QCOM_SCM_OCMEM_UNLOCK_CMD		0x2
+
+extern int __qcom_scm_ocmem_lock(struct device *dev, u32 id, u32 offset,
+				 u32 size, u32 mode);
+extern int __qcom_scm_ocmem_unlock(struct device *dev, u32 id, u32 offset,
+				   u32 size);
+
 #define QCOM_SCM_SVC_PIL		0x2
 #define QCOM_SCM_PAS_INIT_IMAGE_CMD	0x1
 #define QCOM_SCM_PAS_MEM_SETUP_CMD	0x2
diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h
index b5c0afaca955..977c01aa524a 100644
--- a/include/linux/qcom_scm.h
+++ b/include/linux/qcom_scm.h
@@ -34,6 +34,16 @@  enum qcom_scm_sec_dev_id {
 	QCOM_SCM_ICE_DEV_ID	= 20,
 };
 
+enum qcom_scm_ocmem_client {
+	QCOM_SCM_OCMEM_UNUSED_ID = 0x0,
+	QCOM_SCM_OCMEM_GRAPHICS_ID,
+	QCOM_SCM_OCMEM_VIDEO_ID,
+	QCOM_SCM_OCMEM_LP_AUDIO_ID,
+	QCOM_SCM_OCMEM_SENSORS_ID,
+	QCOM_SCM_OCMEM_OTHER_OS_ID,
+	QCOM_SCM_OCMEM_DEBUG_ID,
+};
+
 #define QCOM_SCM_VMID_HLOS       0x3
 #define QCOM_SCM_VMID_MSS_MSA    0xF
 #define QCOM_SCM_VMID_WLAN       0x18
@@ -54,6 +64,11 @@  extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
 extern bool qcom_scm_restore_sec_config_available(void);
 extern int qcom_scm_restore_sec_config(struct device *dev,
 				       enum qcom_scm_sec_dev_id sec_id);
+extern bool qcom_scm_ocmem_lock_available(void);
+extern int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset,
+			       u32 size, u32 mode);
+extern int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset,
+				 u32 size);
 extern bool qcom_scm_pas_supported(u32 peripheral);
 extern int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
 				   size_t size);

Comments

On Sun 16 Jun 06:29 PDT 2019, Brian Masney wrote:

> From: Rob Clark <robdclark@gmail.com>
> 
> 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>

> ---
> Rob's last version of this patch:
> https://patchwork.kernel.org/patch/7340711/
> 
>  drivers/firmware/qcom_scm-32.c | 35 +++++++++++++++++++++++++++++
>  drivers/firmware/qcom_scm-64.c | 12 ++++++++++
>  drivers/firmware/qcom_scm.c    | 40 ++++++++++++++++++++++++++++++++++
>  drivers/firmware/qcom_scm.h    |  9 ++++++++
>  include/linux/qcom_scm.h       | 15 +++++++++++++
>  5 files changed, 111 insertions(+)
> 
> diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c
> index 089b47124933..0100c82b9c00 100644
> --- a/drivers/firmware/qcom_scm-32.c
> +++ b/drivers/firmware/qcom_scm-32.c
> @@ -463,6 +463,41 @@ int __qcom_scm_restore_sec_config(struct device *dev, u32 sec_id,
>  	return 0;
>  }
>  
> +int __qcom_scm_ocmem_lock(struct device *dev, u32 id, u32 offset, u32 size,
> +			  u32 mode)
> +{
> +	struct ocmem_tz_lock {
> +		__le32 id;
> +		__le32 offset;
> +		__le32 size;
> +		__le32 mode;
> +	} request;
> +
> +	request.id = cpu_to_le32(id);
> +	request.offset = cpu_to_le32(offset);
> +	request.size = cpu_to_le32(size);
> +	request.mode = cpu_to_le32(mode);
> +
> +	return qcom_scm_call(dev, QCOM_SCM_OCMEM_SVC, QCOM_SCM_OCMEM_LOCK_CMD,
> +			     &request, sizeof(request), NULL, 0);
> +}
> +
> +int __qcom_scm_ocmem_unlock(struct device *dev, u32 id, u32 offset, u32 size)
> +{
> +	struct ocmem_tz_unlock {
> +		__le32 id;
> +		__le32 offset;
> +		__le32 size;
> +	} request;
> +
> +	request.id = cpu_to_le32(id);
> +	request.offset = cpu_to_le32(offset);
> +	request.size = cpu_to_le32(size);
> +
> +	return qcom_scm_call(dev, QCOM_SCM_OCMEM_SVC, QCOM_SCM_OCMEM_UNLOCK_CMD,
> +			     &request, sizeof(request), NULL, 0);
> +}
> +
>  void __qcom_scm_init(void)
>  {
>  }
> diff --git a/drivers/firmware/qcom_scm-64.c b/drivers/firmware/qcom_scm-64.c
> index b6b78da7f9c9..2674d6d3cdde 100644
> --- a/drivers/firmware/qcom_scm-64.c
> +++ b/drivers/firmware/qcom_scm-64.c
> @@ -247,6 +247,18 @@ int __qcom_scm_restore_sec_config(struct device *dev, u32 sec_id,
>  	return -ENOTSUPP;
>  }
>  
> +int __qcom_scm_ocmem_lock(struct device *dev, uint32_t id, uint32_t offset,
> +			  uint32_t size, uint32_t mode)
> +{
> +	return -ENOTSUPP;
> +}
> +
> +int __qcom_scm_ocmem_unlock(struct device *dev, uint32_t id, uint32_t offset,
> +			    uint32_t size)
> +{
> +	return -ENOTSUPP;
> +}
> +
>  void __qcom_scm_init(void)
>  {
>  	u64 cmd;
> diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
> index 5495ef994c5d..85afb54defd4 100644
> --- a/drivers/firmware/qcom_scm.c
> +++ b/drivers/firmware/qcom_scm.c
> @@ -193,6 +193,46 @@ int qcom_scm_restore_sec_config(struct device *dev,
>  }
>  EXPORT_SYMBOL(qcom_scm_restore_sec_config);
>  
> +/**
> + * 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_supported() - Check if the peripheral authentication service is
>   *			      available for the given peripherial
> diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
> index bccc7d10c5c2..387e3c4e33c5 100644
> --- a/drivers/firmware/qcom_scm.h
> +++ b/drivers/firmware/qcom_scm.h
> @@ -48,6 +48,15 @@ extern void __qcom_scm_init(void);
>  extern int __qcom_scm_restore_sec_config(struct device *dev, u32 sec_id,
>  					 u32 ctx_bank_num);
>  
> +#define QCOM_SCM_OCMEM_SVC			0xf
> +#define QCOM_SCM_OCMEM_LOCK_CMD		0x1
> +#define QCOM_SCM_OCMEM_UNLOCK_CMD		0x2
> +
> +extern int __qcom_scm_ocmem_lock(struct device *dev, u32 id, u32 offset,
> +				 u32 size, u32 mode);
> +extern int __qcom_scm_ocmem_unlock(struct device *dev, u32 id, u32 offset,
> +				   u32 size);
> +
>  #define QCOM_SCM_SVC_PIL		0x2
>  #define QCOM_SCM_PAS_INIT_IMAGE_CMD	0x1
>  #define QCOM_SCM_PAS_MEM_SETUP_CMD	0x2
> diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h
> index b5c0afaca955..977c01aa524a 100644
> --- a/include/linux/qcom_scm.h
> +++ b/include/linux/qcom_scm.h
> @@ -34,6 +34,16 @@ enum qcom_scm_sec_dev_id {
>  	QCOM_SCM_ICE_DEV_ID	= 20,
>  };
>  
> +enum qcom_scm_ocmem_client {
> +	QCOM_SCM_OCMEM_UNUSED_ID = 0x0,
> +	QCOM_SCM_OCMEM_GRAPHICS_ID,
> +	QCOM_SCM_OCMEM_VIDEO_ID,
> +	QCOM_SCM_OCMEM_LP_AUDIO_ID,
> +	QCOM_SCM_OCMEM_SENSORS_ID,
> +	QCOM_SCM_OCMEM_OTHER_OS_ID,
> +	QCOM_SCM_OCMEM_DEBUG_ID,
> +};
> +
>  #define QCOM_SCM_VMID_HLOS       0x3
>  #define QCOM_SCM_VMID_MSS_MSA    0xF
>  #define QCOM_SCM_VMID_WLAN       0x18
> @@ -54,6 +64,11 @@ extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
>  extern bool qcom_scm_restore_sec_config_available(void);
>  extern int qcom_scm_restore_sec_config(struct device *dev,
>  				       enum qcom_scm_sec_dev_id sec_id);
> +extern bool qcom_scm_ocmem_lock_available(void);
> +extern int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset,
> +			       u32 size, u32 mode);
> +extern int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset,
> +				 u32 size);
>  extern bool qcom_scm_pas_supported(u32 peripheral);
>  extern int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
>  				   size_t size);
> -- 
> 2.20.1
>