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 <[email protected]> --- 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
