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From: Andy Gross <andy.gross@linaro.org>
To: linux-arm-msm@vger.kernel.org
Cc: devicetree@vger.kernel.org, Stephen Boyd <sboyd@codeaurora.org>,
	linux-kernel@vger.kernel.org, Andy Gross <andy.gross@linaro.org>,
	jilai wang <jilaiw@codeaurora.org>,
	linux-arm-kernel@lists.infradead.org
Subject: [Patch v2 4/8] firmware: qcom: scm: Add memory allocation API
Date: Mon, 25 Apr 2016 18:08:41 -0500	[thread overview]
Message-ID: <1461625725-32425-5-git-send-email-andy.gross@linaro.org> (raw)
In-Reply-To: <1461625725-32425-1-git-send-email-andy.gross@linaro.org>

This patch adds APIs for the scm-32 and scm-64 to use for coherent memory
allocation.

Signed-off-by: Andy Gross <andy.gross@linaro.org>
---
 drivers/firmware/qcom_scm.c | 16 ++++++++++++++++
 drivers/firmware/qcom_scm.h |  4 ++++
 2 files changed, 20 insertions(+)

diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index d4e9145..8f78938 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -20,6 +20,7 @@
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/clk.h>
+#include <linux/dma-mapping.h>
 
 #include "qcom_scm.h"
 
@@ -158,6 +159,21 @@ bool qcom_scm_is_available(void)
 }
 EXPORT_SYMBOL(qcom_scm_is_available);
 
+void *qcom_scm_alloc_buffer(size_t size, dma_addr_t *dma_addr,
+				      gfp_t gfp)
+{
+	if (__scm)
+		return dma_alloc_writecombine(__scm->dev, size, dma_addr, gfp);
+	else
+		return ERR_PTR(-ENODEV);
+}
+
+void qcom_scm_free_buffer(size_t size, void *cpu_addr,
+				 dma_addr_t dma_addr)
+{
+	dma_free_writecombine(__scm->dev, size, cpu_addr, dma_addr);
+}
+
 static int qcom_scm_probe(struct platform_device *pdev)
 {
 	struct qcom_scm *scm;
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index 7dcc733..848c7de 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -36,6 +36,10 @@ extern int __qcom_scm_is_call_available(u32 svc_id, u32 cmd_id);
 extern int __qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
 		u32 *resp);
 
+extern void *qcom_scm_alloc_buffer(size_t size, dma_addr_t *dma_addr,
+				    gfp_t gfp);
+extern void qcom_scm_free_buffer(size_t size, void *virt_addr,
+				 dma_addr_t dma_addr);
 /* common error codes */
 #define QCOM_SCM_ENOMEM		-5
 #define QCOM_SCM_EOPNOTSUPP	-4
-- 
1.9.1

WARNING: multiple messages have this Message-ID (diff)
From: Andy Gross <andy.gross@linaro.org>
To: linux-arm-msm@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	jilai wang <jilaiw@codeaurora.org>,
	Stephen Boyd <sboyd@codeaurora.org>,
	Andy Gross <andy.gross@linaro.org>
Subject: [Patch v2 4/8] firmware: qcom: scm: Add memory allocation API
Date: Mon, 25 Apr 2016 18:08:41 -0500	[thread overview]
Message-ID: <1461625725-32425-5-git-send-email-andy.gross@linaro.org> (raw)
In-Reply-To: <1461625725-32425-1-git-send-email-andy.gross@linaro.org>

This patch adds APIs for the scm-32 and scm-64 to use for coherent memory
allocation.

Signed-off-by: Andy Gross <andy.gross@linaro.org>
---
 drivers/firmware/qcom_scm.c | 16 ++++++++++++++++
 drivers/firmware/qcom_scm.h |  4 ++++
 2 files changed, 20 insertions(+)

diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index d4e9145..8f78938 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -20,6 +20,7 @@
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/clk.h>
+#include <linux/dma-mapping.h>
 
 #include "qcom_scm.h"
 
@@ -158,6 +159,21 @@ bool qcom_scm_is_available(void)
 }
 EXPORT_SYMBOL(qcom_scm_is_available);
 
+void *qcom_scm_alloc_buffer(size_t size, dma_addr_t *dma_addr,
+				      gfp_t gfp)
+{
+	if (__scm)
+		return dma_alloc_writecombine(__scm->dev, size, dma_addr, gfp);
+	else
+		return ERR_PTR(-ENODEV);
+}
+
+void qcom_scm_free_buffer(size_t size, void *cpu_addr,
+				 dma_addr_t dma_addr)
+{
+	dma_free_writecombine(__scm->dev, size, cpu_addr, dma_addr);
+}
+
 static int qcom_scm_probe(struct platform_device *pdev)
 {
 	struct qcom_scm *scm;
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index 7dcc733..848c7de 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -36,6 +36,10 @@ extern int __qcom_scm_is_call_available(u32 svc_id, u32 cmd_id);
 extern int __qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
 		u32 *resp);
 
+extern void *qcom_scm_alloc_buffer(size_t size, dma_addr_t *dma_addr,
+				    gfp_t gfp);
+extern void qcom_scm_free_buffer(size_t size, void *virt_addr,
+				 dma_addr_t dma_addr);
 /* common error codes */
 #define QCOM_SCM_ENOMEM		-5
 #define QCOM_SCM_EOPNOTSUPP	-4
-- 
1.9.1

WARNING: multiple messages have this Message-ID (diff)
From: andy.gross@linaro.org (Andy Gross)
To: linux-arm-kernel@lists.infradead.org
Subject: [Patch v2 4/8] firmware: qcom: scm: Add memory allocation API
Date: Mon, 25 Apr 2016 18:08:41 -0500	[thread overview]
Message-ID: <1461625725-32425-5-git-send-email-andy.gross@linaro.org> (raw)
In-Reply-To: <1461625725-32425-1-git-send-email-andy.gross@linaro.org>

This patch adds APIs for the scm-32 and scm-64 to use for coherent memory
allocation.

Signed-off-by: Andy Gross <andy.gross@linaro.org>
---
 drivers/firmware/qcom_scm.c | 16 ++++++++++++++++
 drivers/firmware/qcom_scm.h |  4 ++++
 2 files changed, 20 insertions(+)

diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index d4e9145..8f78938 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -20,6 +20,7 @@
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/clk.h>
+#include <linux/dma-mapping.h>
 
 #include "qcom_scm.h"
 
@@ -158,6 +159,21 @@ bool qcom_scm_is_available(void)
 }
 EXPORT_SYMBOL(qcom_scm_is_available);
 
+void *qcom_scm_alloc_buffer(size_t size, dma_addr_t *dma_addr,
+				      gfp_t gfp)
+{
+	if (__scm)
+		return dma_alloc_writecombine(__scm->dev, size, dma_addr, gfp);
+	else
+		return ERR_PTR(-ENODEV);
+}
+
+void qcom_scm_free_buffer(size_t size, void *cpu_addr,
+				 dma_addr_t dma_addr)
+{
+	dma_free_writecombine(__scm->dev, size, cpu_addr, dma_addr);
+}
+
 static int qcom_scm_probe(struct platform_device *pdev)
 {
 	struct qcom_scm *scm;
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index 7dcc733..848c7de 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -36,6 +36,10 @@ extern int __qcom_scm_is_call_available(u32 svc_id, u32 cmd_id);
 extern int __qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
 		u32 *resp);
 
+extern void *qcom_scm_alloc_buffer(size_t size, dma_addr_t *dma_addr,
+				    gfp_t gfp);
+extern void qcom_scm_free_buffer(size_t size, void *virt_addr,
+				 dma_addr_t dma_addr);
 /* common error codes */
 #define QCOM_SCM_ENOMEM		-5
 #define QCOM_SCM_EOPNOTSUPP	-4
-- 
1.9.1

  parent reply	other threads:[~2016-04-25 23:08 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-25 23:08 [Patch v2 0/8] Qualcomm SCM Rework Andy Gross
2016-04-25 23:08 ` Andy Gross
2016-04-25 23:08 ` [Patch v2 1/8] dt/bindings: firmware: Add Qualcomm SCM binding Andy Gross
2016-04-25 23:08   ` Andy Gross
2016-04-25 23:08   ` Andy Gross
2016-04-26  1:49   ` Stephen Boyd
2016-04-26  1:49     ` Stephen Boyd
2016-04-26  2:14     ` Andy Gross
2016-04-26  2:14       ` Andy Gross
2016-04-28 20:47       ` Rob Herring
2016-04-28 20:47         ` Rob Herring
2016-04-25 23:08 ` [Patch v2 2/8] firmware: qcom: scm: Convert SCM to platform driver Andy Gross
2016-04-25 23:08   ` Andy Gross
2016-04-26  1:29   ` Stephen Boyd
2016-04-26  1:29     ` Stephen Boyd
2016-04-29 19:25     ` Andy Gross
2016-04-29 19:25       ` Andy Gross
2016-04-25 23:08 ` [Patch v2 3/8] firmware: qcom: scm: Generalize shared error map Andy Gross
2016-04-25 23:08   ` Andy Gross
2016-04-26  1:29   ` Stephen Boyd
2016-04-26  1:29     ` Stephen Boyd
2016-04-25 23:08 ` Andy Gross [this message]
2016-04-25 23:08   ` [Patch v2 4/8] firmware: qcom: scm: Add memory allocation API Andy Gross
2016-04-25 23:08   ` Andy Gross
2016-04-26  1:50   ` Stephen Boyd
2016-04-26  1:50     ` Stephen Boyd
2016-04-25 23:08 ` [Patch v2 5/8] firmware: qcom: scm: Add support for ARM64 SoCs Andy Gross
2016-04-25 23:08   ` Andy Gross
     [not found] ` <1461625725-32425-1-git-send-email-andy.gross-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-04-25 23:08   ` [Patch v2 6/8] firmware: qcom: scm: Use atomic SCM for cold boot Andy Gross
2016-04-25 23:08     ` Andy Gross
2016-04-25 23:08     ` Andy Gross
2016-04-26  1:44     ` Stephen Boyd
2016-04-26  1:44       ` Stephen Boyd
2016-04-25 23:08   ` [Patch v2 7/8] dts: qcom: apq8084: Add SCM firmware node Andy Gross
2016-04-25 23:08     ` Andy Gross
2016-04-25 23:08     ` Andy Gross
2016-04-25 23:08 ` [Patch v2 8/8] arm64: dts: msm8916: " Andy Gross
2016-04-25 23:08   ` Andy Gross

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