linux-kernel - [PATCH v2 02/18] firmware: qcom

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Date:   Tue, 12 Nov 2019 13:22:38 -0800
From:   Elliot Berman <eberman@...eaurora.org>
To:     bjorn.andersson@...aro.org, saiprakash.ranjan@...eaurora.org,
        agross@...nel.org, swboyd@...omium.org
Cc:     Elliot Berman <eberman@...eaurora.org>, tsoni@...eaurora.org,
        sidgup@...eaurora.org, psodagud@...eaurora.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 02/18] firmware: qcom_scm: Add funcnum IDs

Add LEGACY_FUNCNUM to qcom_scm-32.c and move SMCCC_FUNCNUM closer to
other smccc-specific macros.

Signed-off-by: Elliot Berman <eberman@...eaurora.org>
---
 drivers/firmware/qcom_scm-32.c | 8 +++++---
 drivers/firmware/qcom_scm-64.c | 3 +--
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c
index 5d52641..5077fcf 100644
--- a/drivers/firmware/qcom_scm-32.c
+++ b/drivers/firmware/qcom_scm-32.c
@@ -38,6 +38,8 @@ static struct qcom_scm_entry qcom_scm_wb[] = {
 
 static DEFINE_MUTEX(qcom_scm_lock);
 
+#define LEGACY_FUNCNUM(s, c)	(((s) << 10) | ((c) & 0x3ff))
+
 /**
  * struct qcom_scm_legacy_command - one SCM command buffer
  * @len: total available memory for command and response
@@ -180,7 +182,7 @@ static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
 	cmd->buf_offset = cpu_to_le32(sizeof(*cmd));
 	cmd->resp_hdr_offset = cpu_to_le32(sizeof(*cmd) + cmd_len);
 
-	cmd->id = cpu_to_le32((svc_id << 10) | cmd_id);
+	cmd->id = cpu_to_le32(LEGACY_FUNCNUM(svc_id, cmd_id));
 	if (cmd_buf)
 		memcpy(legacy_get_command_buffer(cmd), cmd_buf, cmd_len);
 
@@ -221,7 +223,7 @@ static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
 #define LEGACY_CLASS_REGISTER		(0x2 << 8)
 #define LEGACY_MASK_IRQS		BIT(5)
 #define LEGACY_ATOMIC_ID(svc, cmd, n) \
-				(((((svc) << 10)|((cmd) & 0x3ff)) << 12) | \
+				((LEGACY_FUNCNUM(svc, cmd) << 12) | \
 				LEGACY_CLASS_REGISTER | \
 				LEGACY_MASK_IRQS | \
 				(n & 0xf))
@@ -424,7 +426,7 @@ void __qcom_scm_cpu_power_down(u32 flags)
 int __qcom_scm_is_call_available(struct device *dev, u32 svc_id, u32 cmd_id)
 {
 	int ret;
-	__le32 svc_cmd = cpu_to_le32((svc_id << 10) | cmd_id);
+	__le32 svc_cmd = cpu_to_le32(LEGACY_FUNCNUM(svc_id, cmd_id));
 	__le32 ret_val = 0;
 
 	ret = qcom_scm_call(dev, QCOM_SCM_SVC_INFO, QCOM_IS_CALL_AVAIL_CMD,
diff --git a/drivers/firmware/qcom_scm-64.c b/drivers/firmware/qcom_scm-64.c
index 8226b94..de337b3 100644
--- a/drivers/firmware/qcom_scm-64.c
+++ b/drivers/firmware/qcom_scm-64.c
@@ -14,8 +14,6 @@
 
 #include "qcom_scm.h"
 
-#define SMCCC_FUNCNUM(s, c) ((((s) & 0xFF) << 8) | ((c) & 0xFF))
-
 #define MAX_QCOM_SCM_ARGS 10
 #define MAX_QCOM_SCM_RETS 3
 
@@ -58,6 +56,7 @@ static DEFINE_MUTEX(qcom_scm_lock);
 #define QCOM_SCM_EBUSY_WAIT_MS 30
 #define QCOM_SCM_EBUSY_MAX_RETRY 20
 
+#define SMCCC_FUNCNUM(s, c)	((((s) & 0xFF) << 8) | ((c) & 0xFF))
 #define SMCCC_N_EXT_ARGS 7
 #define SMCCC_FIRST_EXT_IDX 3
 #define SMCCC_N_REG_ARGS (MAX_QCOM_SCM_ARGS - SMCCC_N_EXT_ARGS + 1)
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project