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Subject[PATCH v5 5/5] soc: qcom: socinfo: Expose image information
Date
The socinfo driver provides information about version of the various
images loaded in the system. Expose this to user space for debugging
purpose.

Signed-off-by: Vaishali Thakkar <vaishali.thakkar@linaro.org>
---
Changes since v4:
- Reduce number of duplicate image macros and functions
- Introduce array for image info debugfs entries and use it
instead of open coding
Changes since v3:
- Remove extra debugfs directory creation checks
Changes since v2:
- None
Changes since v1:
- None
---
drivers/soc/qcom/socinfo.c | 84 ++++++++++++++++++++++++++++++++++++++
1 file changed, 84 insertions(+)

diff --git a/drivers/soc/qcom/socinfo.c b/drivers/soc/qcom/socinfo.c
index 6a4795433d57..855353bed19e 100644
--- a/drivers/soc/qcom/socinfo.c
+++ b/drivers/soc/qcom/socinfo.c
@@ -34,0 +35,33 @@
+#define SMEM_IMAGE_VERSION_BLOCKS_COUNT 32
+#define SMEM_IMAGE_VERSION_SIZE 4096
+#define SMEM_IMAGE_VERSION_NAME_SIZE 75
+#define SMEM_IMAGE_VERSION_VARIANT_SIZE 20
+#define SMEM_IMAGE_VERSION_OEM_SIZE 32
+
+/*
+ * SMEM Image table indices
+ */
+#define SMEM_IMAGE_TABLE_BOOT_INDEX 0
+#define SMEM_IMAGE_TABLE_TZ_INDEX 1
+#define SMEM_IMAGE_TABLE_RPM_INDEX 3
+#define SMEM_IMAGE_TABLE_APPS_INDEX 10
+#define SMEM_IMAGE_TABLE_MPSS_INDEX 11
+#define SMEM_IMAGE_TABLE_ADSP_INDEX 12
+#define SMEM_IMAGE_TABLE_CNSS_INDEX 13
+#define SMEM_IMAGE_TABLE_VIDEO_INDEX 14
+#define SMEM_IMAGE_VERSION_TABLE 469
+
+/*
+ * SMEM Image table names
+ */
+static const char *const socinfo_image_names[] = {
+ [SMEM_IMAGE_TABLE_ADSP_INDEX] = "adsp",
+ [SMEM_IMAGE_TABLE_APPS_INDEX] = "apps",
+ [SMEM_IMAGE_TABLE_BOOT_INDEX] = "boot",
+ [SMEM_IMAGE_TABLE_CNSS_INDEX] = "cnss",
+ [SMEM_IMAGE_TABLE_MPSS_INDEX] = "mpss",
+ [SMEM_IMAGE_TABLE_RPM_INDEX] = "rpm",
+ [SMEM_IMAGE_TABLE_TZ_INDEX] = "tz",
+ [SMEM_IMAGE_TABLE_VIDEO_INDEX] = "video",
+};
+
@@ -105,0 +139,7 @@ struct socinfo_params {
+
+struct smem_image_version {
+ char name[SMEM_IMAGE_VERSION_NAME_SIZE];
+ char variant[SMEM_IMAGE_VERSION_VARIANT_SIZE];
+ char pad;
+ char oem[SMEM_IMAGE_VERSION_OEM_SIZE];
+};
@@ -232,0 +273,24 @@ QCOM_OPEN(pmic_die_rev, qcom_show_pmic_die_revision);
+#define DEFINE_IMAGE_OPS(type) \
+static int show_image_##type(struct seq_file *seq, void *p) \
+{ \
+ struct smem_image_version *image_version = seq->private; \
+ seq_puts(seq, image_version->type); \
+ seq_puts(seq, "\n"); \
+ return 0; \
+} \
+static int open_image_##type(struct inode *inode, struct file *file) \
+{ \
+ return single_open(file, show_image_##type, inode->i_private); \
+} \
+ \
+static const struct file_operations qcom_image_##type##_ops = { \
+ .open = open_image_##type, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release, \
+}
+
+DEFINE_IMAGE_OPS(name);
+DEFINE_IMAGE_OPS(variant);
+DEFINE_IMAGE_OPS(oem);
+
@@ -235,0 +300,2 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
+ struct smem_image_version *versions;
+ struct dentry *dentry;
@@ -236,0 +303 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
+ int i;
@@ -304,0 +372,17 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
+
+ versions = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_IMAGE_VERSION_TABLE,
+ &size);
+
+ for (i = 0; i < ARRAY_SIZE(socinfo_image_names); i++) {
+ if (!socinfo_image_names[i])
+ continue;
+
+ dentry = debugfs_create_dir(socinfo_image_names[i],
+ qcom_socinfo->dbg_root);
+ debugfs_create_file("name", 0400, dentry, &versions[i],
+ &qcom_image_name_ops);
+ debugfs_create_file("variant", 0400, dentry, &versions[i],
+ &qcom_image_variant_ops);
+ debugfs_create_file("oem", 0400, dentry, &versions[i],
+ &qcom_image_oem_ops);
+ }
--
2.17.1
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