[PATCH v4 01/17] firmware: qcom_scm: Rename macros and structures
From: Elliot Berman
Date: Thu Dec 12 2019 - 13:52:10 EST
Rename legacy-specific structures and macros with legacy prefix; rename
smc-specific structures and macros with smc prefix. This should make it
clearer which structures are generic to "SCM" and which are specfically
for implementing the convention.
Signed-off-by: Elliot Berman <eberman@xxxxxxxxxxxxxx>
---
drivers/firmware/qcom_scm-32.c | 71 ++++++++++++++++++++++--------------------
drivers/firmware/qcom_scm-64.c | 53 +++++++++++++++----------------
2 files changed, 64 insertions(+), 60 deletions(-)
diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c
index 48e2ef7..2542c42 100644
--- a/drivers/firmware/qcom_scm-32.c
+++ b/drivers/firmware/qcom_scm-32.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2010,2015, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2010,2015,2019 The Linux Foundation. All rights reserved.
* Copyright (C) 2015 Linaro Ltd.
*/
@@ -39,30 +39,30 @@ static struct qcom_scm_entry qcom_scm_wb[] = {
static DEFINE_MUTEX(qcom_scm_lock);
/**
- * struct qcom_scm_command - one SCM command buffer
+ * struct scm_legacy_command - one SCM command buffer
* @len: total available memory for command and response
* @buf_offset: start of command buffer
* @resp_hdr_offset: start of response buffer
* @id: command to be executed
- * @buf: buffer returned from qcom_scm_get_command_buffer()
+ * @buf: buffer returned from scm_legacy_get_command_buffer()
*
* An SCM command is laid out in memory as follows:
*
- * ------------------- <--- struct qcom_scm_command
+ * ------------------- <--- struct scm_legacy_command
* | command header |
- * ------------------- <--- qcom_scm_get_command_buffer()
+ * ------------------- <--- scm_legacy_get_command_buffer()
* | command buffer |
- * ------------------- <--- struct qcom_scm_response and
- * | response header | qcom_scm_command_to_response()
- * ------------------- <--- qcom_scm_get_response_buffer()
+ * ------------------- <--- struct scm_legacy_response and
+ * | response header | scm_legacy_command_to_response()
+ * ------------------- <--- scm_legacy_get_response_buffer()
* | response buffer |
* -------------------
*
* There can be arbitrary padding between the headers and buffers so
- * you should always use the appropriate qcom_scm_get_*_buffer() routines
+ * you should always use the appropriate scm_legacy_get_*_buffer() routines
* to access the buffers in a safe manner.
*/
-struct qcom_scm_command {
+struct scm_legacy_command {
__le32 len;
__le32 buf_offset;
__le32 resp_hdr_offset;
@@ -71,52 +71,54 @@ struct qcom_scm_command {
};
/**
- * struct qcom_scm_response - one SCM response buffer
+ * struct scm_legacy_response - one SCM response buffer
* @len: total available memory for response
- * @buf_offset: start of response data relative to start of qcom_scm_response
+ * @buf_offset: start of response data relative to start of scm_legacy_response
* @is_complete: indicates if the command has finished processing
*/
-struct qcom_scm_response {
+struct scm_legacy_response {
__le32 len;
__le32 buf_offset;
__le32 is_complete;
};
/**
- * qcom_scm_command_to_response() - Get a pointer to a qcom_scm_response
+ * scm_legacy_command_to_response() - Get a pointer to a scm_legacy_response
* @cmd: command
*
* Returns a pointer to a response for a command.
*/
-static inline struct qcom_scm_response *qcom_scm_command_to_response(
- const struct qcom_scm_command *cmd)
+static inline struct scm_legacy_response *scm_legacy_command_to_response(
+ const struct scm_legacy_command *cmd)
{
return (void *)cmd + le32_to_cpu(cmd->resp_hdr_offset);
}
/**
- * qcom_scm_get_command_buffer() - Get a pointer to a command buffer
+ * scm_legacy_get_command_buffer() - Get a pointer to a command buffer
* @cmd: command
*
* Returns a pointer to the command buffer of a command.
*/
-static inline void *qcom_scm_get_command_buffer(const struct qcom_scm_command *cmd)
+static inline void *scm_legacy_get_command_buffer(
+ const struct scm_legacy_command *cmd)
{
return (void *)cmd->buf;
}
/**
- * qcom_scm_get_response_buffer() - Get a pointer to a response buffer
+ * scm_legacy_get_response_buffer() - Get a pointer to a response buffer
* @rsp: response
*
* Returns a pointer to a response buffer of a response.
*/
-static inline void *qcom_scm_get_response_buffer(const struct qcom_scm_response *rsp)
+static inline void *scm_legacy_get_response_buffer(
+ const struct scm_legacy_response *rsp)
{
return (void *)rsp + le32_to_cpu(rsp->buf_offset);
}
-static u32 smc(u32 cmd_addr)
+static u32 __scm_legacy_do(u32 cmd_addr)
{
int context_id;
register u32 r0 asm("r0") = 1;
@@ -164,8 +166,8 @@ static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
size_t resp_len)
{
int ret;
- struct qcom_scm_command *cmd;
- struct qcom_scm_response *rsp;
+ struct scm_legacy_command *cmd;
+ struct scm_legacy_response *rsp;
size_t alloc_len = sizeof(*cmd) + cmd_len + sizeof(*rsp) + resp_len;
dma_addr_t cmd_phys;
@@ -179,9 +181,9 @@ static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
cmd->id = cpu_to_le32((svc_id << 10) | cmd_id);
if (cmd_buf)
- memcpy(qcom_scm_get_command_buffer(cmd), cmd_buf, cmd_len);
+ memcpy(scm_legacy_get_command_buffer(cmd), cmd_buf, cmd_len);
- rsp = qcom_scm_command_to_response(cmd);
+ rsp = scm_legacy_command_to_response(cmd);
cmd_phys = dma_map_single(dev, cmd, alloc_len, DMA_TO_DEVICE);
if (dma_mapping_error(dev, cmd_phys)) {
@@ -190,7 +192,7 @@ static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
}
mutex_lock(&qcom_scm_lock);
- ret = smc(cmd_phys);
+ ret = __scm_legacy_do(cmd_phys);
if (ret < 0)
ret = qcom_scm_remap_error(ret);
mutex_unlock(&qcom_scm_lock);
@@ -206,7 +208,7 @@ static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len +
le32_to_cpu(rsp->buf_offset),
resp_len, DMA_FROM_DEVICE);
- memcpy(resp_buf, qcom_scm_get_response_buffer(rsp),
+ memcpy(resp_buf, scm_legacy_get_response_buffer(rsp),
resp_len);
}
out:
@@ -215,11 +217,12 @@ static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
return ret;
}
-#define SCM_CLASS_REGISTER (0x2 << 8)
-#define SCM_MASK_IRQS BIT(5)
-#define SCM_ATOMIC(svc, cmd, n) (((((svc) << 10)|((cmd) & 0x3ff)) << 12) | \
- SCM_CLASS_REGISTER | \
- SCM_MASK_IRQS | \
+#define SCM_LEGACY_CLASS_REGISTER (0x2 << 8)
+#define SCM_LEGACY_MASK_IRQS BIT(5)
+#define SCM_LEGACY_ATOMIC_ID(svc, cmd, n) \
+ (((((svc) << 10)|((cmd) & 0x3ff)) << 12) | \
+ SCM_LEGACY_CLASS_REGISTER | \
+ SCM_LEGACY_MASK_IRQS | \
(n & 0xf))
/**
@@ -235,7 +238,7 @@ static s32 qcom_scm_call_atomic1(u32 svc, u32 cmd, u32 arg1)
{
int context_id;
- register u32 r0 asm("r0") = SCM_ATOMIC(svc, cmd, 1);
+ register u32 r0 asm("r0") = SCM_LEGACY_ATOMIC_ID(svc, cmd, 1);
register u32 r1 asm("r1") = (u32)&context_id;
register u32 r2 asm("r2") = arg1;
@@ -268,7 +271,7 @@ static s32 qcom_scm_call_atomic2(u32 svc, u32 cmd, u32 arg1, u32 arg2)
{
int context_id;
- register u32 r0 asm("r0") = SCM_ATOMIC(svc, cmd, 2);
+ register u32 r0 asm("r0") = SCM_LEGACY_ATOMIC_ID(svc, cmd, 2);
register u32 r1 asm("r1") = (u32)&context_id;
register u32 r2 asm("r2") = arg1;
register u32 r3 asm("r3") = arg2;
diff --git a/drivers/firmware/qcom_scm-64.c b/drivers/firmware/qcom_scm-64.c
index 3c58503..9c7ea74 100644
--- a/drivers/firmware/qcom_scm-64.c
+++ b/drivers/firmware/qcom_scm-64.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015,2019 The Linux Foundation. All rights reserved.
*/
#include <linux/io.h>
@@ -14,7 +14,7 @@
#include "qcom_scm.h"
-#define QCOM_SCM_FNID(s, c) ((((s) & 0xFF) << 8) | ((c) & 0xFF))
+#define SCM_SMC_FNID(s, c) ((((s) & 0xFF) << 8) | ((c) & 0xFF))
#define MAX_QCOM_SCM_ARGS 10
#define MAX_QCOM_SCM_RETS 3
@@ -58,11 +58,11 @@ static DEFINE_MUTEX(qcom_scm_lock);
#define QCOM_SCM_EBUSY_WAIT_MS 30
#define QCOM_SCM_EBUSY_MAX_RETRY 20
-#define N_EXT_QCOM_SCM_ARGS 7
-#define FIRST_EXT_ARG_IDX 3
-#define N_REGISTER_ARGS (MAX_QCOM_SCM_ARGS - N_EXT_QCOM_SCM_ARGS + 1)
+#define SCM_SMC_N_EXT_ARGS 7
+#define SCM_SMC_FIRST_EXT_IDX 3
+#define SCM_SMC_N_REG_ARGS (MAX_QCOM_SCM_ARGS - SCM_SMC_N_EXT_ARGS + 1)
-static void __qcom_scm_call_do(const struct qcom_scm_desc *desc,
+static void __scm_smc_do_quirk(const struct qcom_scm_desc *desc,
struct arm_smccc_res *res, u32 fn_id,
u64 x5, u32 type)
{
@@ -85,22 +85,23 @@ static void __qcom_scm_call_do(const struct qcom_scm_desc *desc,
} while (res->a0 == QCOM_SCM_INTERRUPTED);
}
-static void qcom_scm_call_do(const struct qcom_scm_desc *desc,
+static void __scm_smc_do(const struct qcom_scm_desc *desc,
struct arm_smccc_res *res, u32 fn_id,
u64 x5, bool atomic)
{
int retry_count = 0;
if (atomic) {
- __qcom_scm_call_do(desc, res, fn_id, x5, ARM_SMCCC_FAST_CALL);
+ __scm_smc_do_quirk(desc, res, fn_id, x5,
+ ARM_SMCCC_FAST_CALL);
return;
}
do {
mutex_lock(&qcom_scm_lock);
- __qcom_scm_call_do(desc, res, fn_id, x5,
- ARM_SMCCC_STD_CALL);
+ __scm_smc_do_quirk(desc, res, fn_id, x5,
+ ARM_SMCCC_STD_CALL);
mutex_unlock(&qcom_scm_lock);
@@ -112,21 +113,21 @@ static void qcom_scm_call_do(const struct qcom_scm_desc *desc,
} while (res->a0 == QCOM_SCM_V2_EBUSY);
}
-static int ___qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
- const struct qcom_scm_desc *desc,
- struct arm_smccc_res *res, bool atomic)
+static int __scm_smc_call(struct device *dev, u32 svc_id, u32 cmd_id,
+ const struct qcom_scm_desc *desc,
+ struct arm_smccc_res *res, bool atomic)
{
int arglen = desc->arginfo & 0xf;
int i;
- u32 fn_id = QCOM_SCM_FNID(svc_id, cmd_id);
- u64 x5 = desc->args[FIRST_EXT_ARG_IDX];
+ u32 fn_id = SCM_SMC_FNID(svc_id, cmd_id);
+ u64 x5 = desc->args[SCM_SMC_FIRST_EXT_IDX];
dma_addr_t args_phys = 0;
void *args_virt = NULL;
size_t alloc_len;
gfp_t flag = atomic ? GFP_ATOMIC : GFP_KERNEL;
- if (unlikely(arglen > N_REGISTER_ARGS)) {
- alloc_len = N_EXT_QCOM_SCM_ARGS * sizeof(u64);
+ if (unlikely(arglen > SCM_SMC_N_REG_ARGS)) {
+ alloc_len = SCM_SMC_N_EXT_ARGS * sizeof(u64);
args_virt = kzalloc(PAGE_ALIGN(alloc_len), flag);
if (!args_virt)
@@ -135,15 +136,15 @@ static int ___qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
if (qcom_smccc_convention == ARM_SMCCC_SMC_32) {
__le32 *args = args_virt;
- for (i = 0; i < N_EXT_QCOM_SCM_ARGS; i++)
+ for (i = 0; i < SCM_SMC_N_EXT_ARGS; i++)
args[i] = cpu_to_le32(desc->args[i +
- FIRST_EXT_ARG_IDX]);
+ SCM_SMC_FIRST_EXT_IDX]);
} else {
__le64 *args = args_virt;
- for (i = 0; i < N_EXT_QCOM_SCM_ARGS; i++)
+ for (i = 0; i < SCM_SMC_N_EXT_ARGS; i++)
args[i] = cpu_to_le64(desc->args[i +
- FIRST_EXT_ARG_IDX]);
+ SCM_SMC_FIRST_EXT_IDX]);
}
args_phys = dma_map_single(dev, args_virt, alloc_len,
@@ -157,7 +158,7 @@ static int ___qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
x5 = args_phys;
}
- qcom_scm_call_do(desc, res, fn_id, x5, atomic);
+ __scm_smc_do(desc, res, fn_id, x5, atomic);
if (args_virt) {
dma_unmap_single(dev, args_phys, alloc_len, DMA_TO_DEVICE);
@@ -185,7 +186,7 @@ static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
struct arm_smccc_res *res)
{
might_sleep();
- return ___qcom_scm_call(dev, svc_id, cmd_id, desc, res, false);
+ return __scm_smc_call(dev, svc_id, cmd_id, desc, res, false);
}
/**
@@ -203,7 +204,7 @@ static int qcom_scm_call_atomic(struct device *dev, u32 svc_id, u32 cmd_id,
const struct qcom_scm_desc *desc,
struct arm_smccc_res *res)
{
- return ___qcom_scm_call(dev, svc_id, cmd_id, desc, res, true);
+ return __scm_smc_call(dev, svc_id, cmd_id, desc, res, true);
}
/**
@@ -253,7 +254,7 @@ int __qcom_scm_is_call_available(struct device *dev, u32 svc_id, u32 cmd_id)
struct arm_smccc_res res;
desc.arginfo = QCOM_SCM_ARGS(1);
- desc.args[0] = QCOM_SCM_FNID(svc_id, cmd_id) |
+ desc.args[0] = SCM_SMC_FNID(svc_id, cmd_id) |
(ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT);
ret = qcom_scm_call(dev, QCOM_SCM_SVC_INFO, QCOM_IS_CALL_AVAIL_CMD,
@@ -307,7 +308,7 @@ void __qcom_scm_init(void)
{
u64 cmd;
struct arm_smccc_res res;
- u32 function = QCOM_SCM_FNID(QCOM_SCM_SVC_INFO, QCOM_IS_CALL_AVAIL_CMD);
+ u32 function = SCM_SMC_FNID(QCOM_SCM_SVC_INFO, QCOM_IS_CALL_AVAIL_CMD);
/* First try a SMC64 call */
cmd = ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, ARM_SMCCC_SMC_64,
--
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