From: Brian Masney <masneyb@onstation.org>
To: agross@kernel.org, david.brown@linaro.org, robdclark@gmail.com,
sean@poorly.run, robh+dt@kernel.org
Cc: bjorn.andersson@linaro.org, airlied@linux.ie, daniel@ffwll.ch,
mark.rutland@arm.com, jonathan@marek.ca,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org,
devicetree@vger.kernel.org
Subject: [PATCH 4/6] firmware: qcom: scm: add OCMEM lock/unlock interface
Date: Sun, 16 Jun 2019 09:29:28 -0400 [thread overview]
Message-ID: <20190616132930.6942-5-masneyb@onstation.org> (raw)
In-Reply-To: <20190616132930.6942-1-masneyb@onstation.org>
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(+)
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
next prev parent reply other threads:[~2019-06-16 13:29 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-16 13:29 [PATCH 0/6] qcom: add OCMEM support Brian Masney
2019-06-16 13:29 ` [PATCH 1/6] dt-bindings: soc: qcom: add On Chip MEMory (OCMEM) bindings Brian Masney
2019-06-16 17:43 ` Bjorn Andersson
2019-06-17 14:29 ` Rob Herring
2019-06-16 13:29 ` [PATCH 2/6] dt-bindings: display: msm: gmu: add optional ocmem property Brian Masney
2019-06-19 18:06 ` [Freedreno] " Jordan Crouse
2019-06-19 20:16 ` Rob Herring
2019-06-19 20:21 ` Rob Clark
2019-06-21 2:14 ` Brian Masney
2019-06-22 23:28 ` Rob Clark
2019-06-16 13:29 ` [PATCH 3/6] firmware: qcom: scm: add support to restore secure config Brian Masney
2019-06-16 17:53 ` Bjorn Andersson
2019-06-16 13:29 ` Brian Masney [this message]
2019-06-16 17:54 ` [PATCH 4/6] firmware: qcom: scm: add OCMEM lock/unlock interface Bjorn Andersson
2019-06-16 13:29 ` [PATCH 5/6] soc: qcom: add OCMEM driver Brian Masney
2019-06-16 17:41 ` Bjorn Andersson
2019-06-18 2:02 ` Brian Masney
2019-06-18 2:29 ` Rob Clark
2019-06-16 13:29 ` [PATCH 6/6] drm/msm/gpu: add ocmem init/cleanup functions Brian Masney
2019-06-16 18:06 ` Bjorn Andersson
2019-06-17 0:18 ` Brian Masney
2019-06-17 3:43 ` Bjorn Andersson
2019-06-19 18:15 ` [Freedreno] " Jordan Crouse
2019-06-19 18:21 ` Jordan Crouse
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