#include "scm.h"
-#define SCM_ENOMEM -5
-#define SCM_EOPNOTSUPP -4
-#define SCM_EINVAL_ADDR -3
-#define SCM_EINVAL_ARG -2
-#define SCM_ERROR -1
-#define SCM_INTERRUPTED 1
+#define QCOM_SCM_ENOMEM -5
+#define QCOM_SCM_EOPNOTSUPP -4
+#define QCOM_SCM_EINVAL_ADDR -3
+#define QCOM_SCM_EINVAL_ARG -2
+#define QCOM_SCM_ERROR -1
+#define QCOM_SCM_INTERRUPTED 1
-static DEFINE_MUTEX(scm_lock);
+static DEFINE_MUTEX(qcom_scm_lock);
/**
- * struct scm_command - one SCM command buffer
+ * struct qcom_scm_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 scm_get_command_buffer()
+ * @buf: buffer returned from qcom_scm_get_command_buffer()
*
* An SCM command is laid out in memory as follows:
*
- * ------------------- <--- struct scm_command
+ * ------------------- <--- struct qcom_scm_command
* | command header |
- * ------------------- <--- scm_get_command_buffer()
+ * ------------------- <--- qcom_scm_get_command_buffer()
* | command buffer |
- * ------------------- <--- struct scm_response and
- * | response header | scm_command_to_response()
- * ------------------- <--- scm_get_response_buffer()
+ * ------------------- <--- struct qcom_scm_response and
+ * | response header | qcom_scm_command_to_response()
+ * ------------------- <--- qcom_scm_get_response_buffer()
* | response buffer |
* -------------------
*
* There can be arbitrary padding between the headers and buffers so
- * you should always use the appropriate scm_get_*_buffer() routines
+ * you should always use the appropriate qcom_scm_get_*_buffer() routines
* to access the buffers in a safe manner.
*/
-struct scm_command {
+struct qcom_scm_command {
__le32 len;
__le32 buf_offset;
__le32 resp_hdr_offset;
};
/**
- * struct scm_response - one SCM response buffer
+ * struct qcom_scm_response - one SCM response buffer
* @len: total available memory for response
- * @buf_offset: start of response data relative to start of scm_response
+ * @buf_offset: start of response data relative to start of qcom_scm_response
* @is_complete: indicates if the command has finished processing
*/
-struct scm_response {
+struct qcom_scm_response {
__le32 len;
__le32 buf_offset;
__le32 is_complete;
};
/**
- * alloc_scm_command() - Allocate an SCM command
+ * alloc_qcom_scm_command() - Allocate an SCM command
* @cmd_size: size of the command buffer
* @resp_size: size of the response buffer
*
* Allocate an SCM command, including enough room for the command
* and response headers as well as the command and response buffers.
*
- * Returns a valid &scm_command on success or %NULL if the allocation fails.
+ * Returns a valid &qcom_scm_command on success or %NULL if the allocation fails.
*/
-static struct scm_command *alloc_scm_command(size_t cmd_size, size_t resp_size)
+static struct qcom_scm_command *alloc_qcom_scm_command(size_t cmd_size, size_t resp_size)
{
- struct scm_command *cmd;
- size_t len = sizeof(*cmd) + sizeof(struct scm_response) + cmd_size +
+ struct qcom_scm_command *cmd;
+ size_t len = sizeof(*cmd) + sizeof(struct qcom_scm_response) + cmd_size +
resp_size;
u32 offset;
cmd = kzalloc(PAGE_ALIGN(len), GFP_KERNEL);
if (cmd) {
cmd->len = cpu_to_le32(len);
- offset = offsetof(struct scm_command, buf);
+ offset = offsetof(struct qcom_scm_command, buf);
cmd->buf_offset = cpu_to_le32(offset);
cmd->resp_hdr_offset = cpu_to_le32(offset + cmd_size);
}
}
/**
- * free_scm_command() - Free an SCM command
+ * free_qcom_scm_command() - Free an SCM command
* @cmd: command to free
*
* Free an SCM command.
*/
-static inline void free_scm_command(struct scm_command *cmd)
+static inline void free_qcom_scm_command(struct qcom_scm_command *cmd)
{
kfree(cmd);
}
/**
- * scm_command_to_response() - Get a pointer to a scm_response
+ * qcom_scm_command_to_response() - Get a pointer to a qcom_scm_response
* @cmd: command
*
* Returns a pointer to a response for a command.
*/
-static inline struct scm_response *scm_command_to_response(
- const struct scm_command *cmd)
+static inline struct qcom_scm_response *qcom_scm_command_to_response(
+ const struct qcom_scm_command *cmd)
{
return (void *)cmd + le32_to_cpu(cmd->resp_hdr_offset);
}
/**
- * scm_get_command_buffer() - Get a pointer to a command buffer
+ * qcom_scm_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 *scm_get_command_buffer(const struct scm_command *cmd)
+static inline void *qcom_scm_get_command_buffer(const struct qcom_scm_command *cmd)
{
return (void *)cmd->buf;
}
/**
- * scm_get_response_buffer() - Get a pointer to a response buffer
+ * qcom_scm_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 *scm_get_response_buffer(const struct scm_response *rsp)
+static inline void *qcom_scm_get_response_buffer(const struct qcom_scm_response *rsp)
{
return (void *)rsp + le32_to_cpu(rsp->buf_offset);
}
-static int scm_remap_error(int err)
+static int qcom_scm_remap_error(int err)
{
- pr_err("scm_call failed with error code %d\n", err);
+ pr_err("qcom_scm_call failed with error code %d\n", err);
switch (err) {
- case SCM_ERROR:
+ case QCOM_SCM_ERROR:
return -EIO;
- case SCM_EINVAL_ADDR:
- case SCM_EINVAL_ARG:
+ case QCOM_SCM_EINVAL_ADDR:
+ case QCOM_SCM_EINVAL_ARG:
return -EINVAL;
- case SCM_EOPNOTSUPP:
+ case QCOM_SCM_EOPNOTSUPP:
return -EOPNOTSUPP;
- case SCM_ENOMEM:
+ case QCOM_SCM_ENOMEM:
return -ENOMEM;
}
return -EINVAL;
: "=r" (r0)
: "r" (r0), "r" (r1), "r" (r2)
: "r3");
- } while (r0 == SCM_INTERRUPTED);
+ } while (r0 == QCOM_SCM_INTERRUPTED);
return r0;
}
-static int __scm_call(const struct scm_command *cmd)
+static int __qcom_scm_call(const struct qcom_scm_command *cmd)
{
int ret;
u32 cmd_addr = virt_to_phys(cmd);
ret = smc(cmd_addr);
if (ret < 0)
- ret = scm_remap_error(ret);
+ ret = qcom_scm_remap_error(ret);
return ret;
}
-static void scm_inv_range(unsigned long start, unsigned long end)
+static void qcom_scm_inv_range(unsigned long start, unsigned long end)
{
u32 cacheline_size, ctr;
}
/**
- * scm_call() - Send an SCM command
+ * qcom_scm_call() - Send an SCM command
* @svc_id: service identifier
* @cmd_id: command identifier
* @cmd_buf: command buffer
*
* A note on cache maintenance:
* Note that any buffers that are expected to be accessed by the secure world
- * must be flushed before invoking scm_call and invalidated in the cache
- * immediately after scm_call returns. Cache maintenance on the command and
- * response buffers is taken care of by scm_call; however, callers are
+ * must be flushed before invoking qcom_scm_call and invalidated in the cache
+ * immediately after qcom_scm_call returns. Cache maintenance on the command
+ * and response buffers is taken care of by qcom_scm_call; however, callers are
* responsible for any other cached buffers passed over to the secure world.
*/
-static int scm_call(u32 svc_id, u32 cmd_id, const void *cmd_buf, size_t cmd_len,
- void *resp_buf, size_t resp_len)
+static int qcom_scm_call(u32 svc_id, u32 cmd_id, const void *cmd_buf,
+ size_t cmd_len, void *resp_buf, size_t resp_len)
{
int ret;
- struct scm_command *cmd;
- struct scm_response *rsp;
+ struct qcom_scm_command *cmd;
+ struct qcom_scm_response *rsp;
unsigned long start, end;
- cmd = alloc_scm_command(cmd_len, resp_len);
+ cmd = alloc_qcom_scm_command(cmd_len, resp_len);
if (!cmd)
return -ENOMEM;
cmd->id = cpu_to_le32((svc_id << 10) | cmd_id);
if (cmd_buf)
- memcpy(scm_get_command_buffer(cmd), cmd_buf, cmd_len);
+ memcpy(qcom_scm_get_command_buffer(cmd), cmd_buf, cmd_len);
- mutex_lock(&scm_lock);
- ret = __scm_call(cmd);
- mutex_unlock(&scm_lock);
+ mutex_lock(&qcom_scm_lock);
+ ret = __qcom_scm_call(cmd);
+ mutex_unlock(&qcom_scm_lock);
if (ret)
goto out;
- rsp = scm_command_to_response(cmd);
+ rsp = qcom_scm_command_to_response(cmd);
start = (unsigned long)rsp;
do {
- scm_inv_range(start, start + sizeof(*rsp));
+ qcom_scm_inv_range(start, start + sizeof(*rsp));
} while (!rsp->is_complete);
- end = (unsigned long)scm_get_response_buffer(rsp) + resp_len;
- scm_inv_range(start, end);
+ end = (unsigned long)qcom_scm_get_response_buffer(rsp) + resp_len;
+ qcom_scm_inv_range(start, end);
if (resp_buf)
- memcpy(resp_buf, scm_get_response_buffer(rsp), resp_len);
+ memcpy(resp_buf, qcom_scm_get_response_buffer(rsp), resp_len);
out:
- free_scm_command(cmd);
+ free_qcom_scm_command(cmd);
return ret;
}
-u32 scm_get_version(void)
+u32 qcom_scm_get_version(void)
{
int context_id;
static u32 version = -1;
if (version != -1)
return version;
- mutex_lock(&scm_lock);
+ mutex_lock(&qcom_scm_lock);
r0 = 0x1 << 8;
r1 = (u32)&context_id;
: "=r" (r0), "=r" (r1)
: "r" (r0), "r" (r1)
: "r2", "r3");
- } while (r0 == SCM_INTERRUPTED);
+ } while (r0 == QCOM_SCM_INTERRUPTED);
version = r1;
- mutex_unlock(&scm_lock);
+ mutex_unlock(&qcom_scm_lock);
return version;
}
-EXPORT_SYMBOL(scm_get_version);
+EXPORT_SYMBOL(qcom_scm_get_version);
-#define SCM_SVC_BOOT 0x1
-#define SCM_BOOT_ADDR 0x1
+#define QCOM_SCM_SVC_BOOT 0x1
+#define QCOM_SCM_BOOT_ADDR 0x1
/*
* Set the cold/warm boot address for one of the CPU cores.
*/
-int scm_set_boot_addr(u32 addr, int flags)
+int qcom_scm_set_boot_addr(u32 addr, int flags)
{
struct {
__le32 flags;
cmd.addr = cpu_to_le32(addr);
cmd.flags = cpu_to_le32(flags);
- return scm_call(SCM_SVC_BOOT, SCM_BOOT_ADDR,
+ return qcom_scm_call(QCOM_SCM_SVC_BOOT, QCOM_SCM_BOOT_ADDR,
&cmd, sizeof(cmd), NULL, 0);
}
-EXPORT_SYMBOL(scm_set_boot_addr);
+EXPORT_SYMBOL(qcom_scm_set_boot_addr);
projects / cascardo / linux.git / blobdiff