The SoC info driver provides information such as Chip ID,
Chip family, serial number and other such details about
Qualcomm SoCs to user space, so that if needed some user
space utility(like antutu) can query such information
using sysfs interface.
Signed-off-by: Imran Khan <kimran@xxxxxxxxxxxxxx>
---
drivers/soc/qcom/Kconfig | 1 +
drivers/soc/qcom/Makefile | 3 +-
drivers/soc/qcom/smem.c | 5 +
drivers/soc/qcom/socinfo.c | 518 +++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 526 insertions(+), 1 deletion(-)
create mode 100644 drivers/soc/qcom/socinfo.c
diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
index 461b387..f89d34d 100644
--- a/drivers/soc/qcom/Kconfig
+++ b/drivers/soc/qcom/Kconfig
@@ -24,6 +24,7 @@ config QCOM_SMEM
tristate "Qualcomm Shared Memory Manager (SMEM)"
depends on ARCH_QCOM
depends on HWSPINLOCK
+ select SOC_BUS
help
Say y here to enable support for the Qualcomm Shared Memory Manager.
The driver provides an interface to items in a heap shared among all
diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile
index fdd664e..438efec 100644
--- a/drivers/soc/qcom/Makefile
+++ b/drivers/soc/qcom/Makefile
@@ -2,7 +2,8 @@ obj-$(CONFIG_QCOM_GSBI) += qcom_gsbi.o
obj-$(CONFIG_QCOM_PM) += spm.o
obj-$(CONFIG_QCOM_SMD) += smd.o
obj-$(CONFIG_QCOM_SMD_RPM) += smd-rpm.o
-obj-$(CONFIG_QCOM_SMEM) += smem.o
+obj-$(CONFIG_QCOM_SMEM) += qcom_smem.o
+qcom_smem-y := smem.o socinfo.o
obj-$(CONFIG_QCOM_SMEM_STATE) += smem_state.o
obj-$(CONFIG_QCOM_SMP2P) += smp2p.o
obj-$(CONFIG_QCOM_SMSM) += smsm.o
diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c
index 18ec52f..4f0ccf8 100644
--- a/drivers/soc/qcom/smem.c
+++ b/drivers/soc/qcom/smem.c
@@ -85,6 +85,9 @@
/* Max number of processors/hosts in a system */
#define SMEM_HOST_COUNT 9
+
+extern void qcom_socinfo_init(struct device *device);
+
/**
* struct smem_proc_comm - proc_comm communication struct (legacy)
* @command: current command to be executed
@@ -751,6 +754,8 @@ static int qcom_smem_probe(struct platform_device *pdev)
__smem = smem;
+ qcom_socinfo_init(&pdev->dev);
+
return 0;
}
diff --git a/drivers/soc/qcom/socinfo.c b/drivers/soc/qcom/socinfo.c
new file mode 100644
index 0000000..2491468
--- /dev/null
+++ b/drivers/soc/qcom/socinfo.c
@@ -0,0 +1,518 @@
+/*
+ * Copyright (c) 2009-2017, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/export.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_fdt.h>
+#include <linux/libfdt.h>
+#include <linux/platform_device.h>
+#include <linux/sys_soc.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/random.h>
+#include <linux/soc/qcom/smem.h>
+
+/*
+ * SOC version type with major number in the upper 16 bits and minor
+ * number in the lower 16 bits. For example:
+ * 1.0 -> 0x00010000
+ * 2.3 -> 0x00020003
+ */
+#define SOC_VER_MAJ(ver) (((ver) & 0xffff0000) >> 16)
+#define SOC_VER_MIN(ver) ((ver) & 0x0000ffff)
+#define SOCINFO_VERSION_MAJOR SOC_VER_MAJ
+#define SOCINFO_VERSION_MINOR SOC_VER_MIN
+
+#define SMEM_SOCINFO_BUILD_ID_LENGTH 32
+#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 item ids, used to acquire handles to respective
+ * SMEM region.
+ */
+#define SMEM_IMAGE_VERSION_TABLE 469
+#define SMEM_HW_SW_BUILD_ID 137
+
+/*
+ * 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
+
+struct qcom_socinfo_attr {
+ struct device_attribute attr;
+ int min_ver;
+};
+
+#define QCOM_SOCINFO_ATTR(_name, _show, _min_ver) \
+ { __ATTR(_name, 0444, _show, NULL), _min_ver }
+
+
+struct smem_image_attribute {
+ struct device_attribute version;
+ struct device_attribute variant;
+ struct device_attribute crm;
+ int index;
+};
+
+#define QCOM_SMEM_IMG_ITEM(_name, _mode, _index) \
+ static struct smem_image_attribute _name##_image_attrs = { \
+ __ATTR(_name##_image_version, _mode, \
+ qcom_show_image_version, qcom_store_image_version), \
+ __ATTR(_name##_image_variant, _mode, \
+ qcom_show_image_variant, qcom_store_image_variant), \
+ __ATTR(_name##_image_crm, _mode, \
+ qcom_show_image_crm, qcom_store_image_crm), \
+ _index \
+ }; \
+ static const struct attribute_group _name##_image_attr_group = { \
+ .attrs = (struct attribute*[]) { \
+ &_name##_image_attrs.version.attr, \
+ &_name##_image_attrs.variant.attr, \
+ &_name##_image_attrs.crm.attr, \
+ NULL \
+ } \
+ }
+
+static const char *const pmic_model[] = {
+ [0] = "Unknown PMIC model",
+ [9] = "PM8994",
+ [11] = "PM8916",
+ [13] = "PM8058",
+ [14] = "PM8028",
+ [15] = "PM8901",
+ [16] = "PM8027",
+ [17] = "ISL9519",
+ [18] = "PM8921",
+ [19] = "PM8018",
+ [20] = "PM8015",
+ [21] = "PM8014",
+ [22] = "PM8821",
+ [23] = "PM8038",
+ [24] = "PM8922",
+ [25] = "PM8917",
+};
+
+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];
+};
+
+struct qcom_soc_info {
+ int id;
+ const char *name;
+};
+
+/* Used to parse shared memory. Must match the modem. */
+struct socinfo {
+ __le32 fmt;
+ __le32 id;
+ __le32 ver;
+ char build_id[SMEM_SOCINFO_BUILD_ID_LENGTH];
+ /* Version 2 */
+ __le32 raw_id;
+ __le32 raw_ver;
+ /* Version 3 */
+ __le32 hw_plat;
+ /* Version 4 */
+ __le32 plat_ver;
+ /* Version 5 */
+ __le32 accessory_chip;
+ /* Version 6 */
+ __le32 hw_plat_subtype;
+ /* Version 7 */
+ __le32 pmic_model;
+ __le32 pmic_die_rev;
+ /* Version 8 */
+ __le32 pmic_model_1;
+ __le32 pmic_die_rev_1;
+ __le32 pmic_model_2;
+ __le32 pmic_die_rev_2;
+ /* Version 9 */
+ __le32 foundry_id;
+ /* Version 10 */
+ __le32 serial_num;
+ /* Version 11 */
+ __le32 num_pmics;
+ __le32 pmic_array_offset;
+ /* Version 12 */
+ __le32 chip_family;
+ __le32 raw_device_family;
+ __le32 raw_device_num;
+} *socinfo;
+
+static const struct qcom_soc_info soc_of_id[] = {
+ {87, "MSM8960"},
+ {109, "APQ8064"},
+ {122, "MSM8660A"},
+ {123, "MSM8260A"},
+ {124, "APQ8060A"},
+ {126, "MSM8974"},
+ {130, "MPQ8064"},
+ {138, "MSM8960AB"},
+ {139, "APQ8060AB"},
+ {140, "MSM8260AB"},
+ {141, "MSM8660AB"},
+ {178, "APQ8084"},
+ {184, "APQ8074"},
+ {185, "MSM8274"},
+ {186, "MSM8674"},
+ {194, "MSM8974PRO"},
+ {206, "MSM8916"},
+ {208, "APQ8074-AA"},
+ {209, "APQ8074-AB"},
+ {210, "APQ8074PRO"},
+ {211, "MSM8274-AA"},
+ {212, "MSM8274-AB"},
+ {213, "MSM8274PRO"},
+ {214, "MSM8674-AA"},
+ {215, "MSM8674-AB"},
+ {216, "MSM8674PRO"},
+ {217, "MSM8974-AA"},
+ {218, "MSM8974-AB"},
+ {246, "MSM8996"},
+ {247, "APQ8016"},
+ {248, "MSM8216"},
+ {249, "MSM8116"},
+ {250, "MSM8616"},
+ {291, "APQ8096"},
+ {305, "MSM8996SG"},
+ {310, "MSM8996AU"},
+ {311, "APQ8096AU"},
+ {312, "APQ8096SG"},
+};
+
+static struct smem_image_version *smem_image_version;
+
+/* max socinfo format version supported */
+#define MAX_SOCINFO_FORMAT 12
+
+/* socinfo: sysfs functions */
+
+static ssize_t
+qcom_show_raw_version(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%u\n", le32_to_cpu(socinfo->raw_ver));
+}
+
+static ssize_t
+qcom_show_build_id(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%s\n", socinfo->build_id);
+}
+
+static ssize_t
+qcom_show_hw_platform(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%u\n", le32_to_cpu(socinfo->hw_plat));
+}
+
+static ssize_t
+qcom_show_platform_version(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%u\n",
+ le32_to_cpu(socinfo->plat_ver));
+}
+
+static ssize_t
+qcom_show_accessory_chip(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%u\n",
+ le32_to_cpu(socinfo->accessory_chip));
+}
+
+static ssize_t
+qcom_show_platform_subtype(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int subtype = le32_to_cpu(socinfo->hw_plat_subtype);
+
+ if (subtype < 0)
+ return -EINVAL;
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n", subtype);
+}
+
+static ssize_t
+qcom_show_foundry_id(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%u\n",
+ le32_to_cpu(socinfo->foundry_id));
+}
+
+static ssize_t
+qcom_show_serial_number(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%u\n",
+ le32_to_cpu(socinfo->serial_num));
+}
+
+static ssize_t
+qcom_show_chip_family(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "0x%x\n",
+ le32_to_cpu(socinfo->chip_family));
+}
+
+static ssize_t
+qcom_show_raw_device_family(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "0x%x\n",
+ le32_to_cpu(socinfo->raw_device_family));
+}
+
+static ssize_t
+qcom_show_raw_device_number(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "0x%x\n",
+ le32_to_cpu(socinfo->raw_device_num));
+}
+
+static ssize_t
+qcom_show_pmic_model(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int model = SOC_VER_MIN(le32_to_cpu(socinfo->pmic_model));
+
+ if (model < 0)
+ return -EINVAL;
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n", pmic_model[model]);
+}
+
+static ssize_t
+qcom_show_pmic_die_revision(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%u.%u\n",
+ SOC_VER_MAJ(le32_to_cpu(socinfo->pmic_die_rev)),
+ SOC_VER_MIN(le32_to_cpu(socinfo->pmic_die_rev)));
+}
+
+static ssize_t
+qcom_show_image_version(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct smem_image_attribute *smem_attr;
+
+ smem_attr = container_of(attr, struct smem_image_attribute, version);
+ return scnprintf(buf, PAGE_SIZE, "%s\n",
+ smem_image_version[smem_attr->index].name);
+}
+
+static ssize_t
+qcom_store_image_version(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct smem_image_attribute *smem_attr;
+
+ smem_attr = container_of(attr, struct smem_image_attribute, version);
+ return strlcpy(smem_image_version[smem_attr->index].name, buf,
+ SMEM_IMAGE_VERSION_NAME_SIZE);
+}
+
+static ssize_t
+qcom_show_image_variant(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct smem_image_attribute *smem_attr;
+
+ smem_attr = container_of(attr, struct smem_image_attribute, variant);
+ return scnprintf(buf, PAGE_SIZE, "%s\n",
+ smem_image_version[smem_attr->index].variant);
+}
+
+static ssize_t
+qcom_store_image_variant(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct smem_image_attribute *smem_attr;
+
+ smem_attr = container_of(attr, struct smem_image_attribute, variant);
+ return strlcpy(smem_image_version[smem_attr->index].variant, buf,
+ SMEM_IMAGE_VERSION_VARIANT_SIZE);
+}
+
+static ssize_t
+qcom_show_image_crm(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct smem_image_attribute *smem_attr;
+
+ smem_attr = container_of(attr, struct smem_image_attribute, crm);
+ return scnprintf(buf, PAGE_SIZE, "%s\n",
+ smem_image_version[smem_attr->index].oem);
+}
+
+static ssize_t
+qcom_store_image_crm(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct smem_image_attribute *smem_attr;
+
+ smem_attr = container_of(attr, struct smem_image_attribute, crm);
+ return strlcpy(smem_image_version[smem_attr->index].oem, buf,
+ SMEM_IMAGE_VERSION_OEM_SIZE);
+}
+
+static const struct qcom_socinfo_attr socinfo_attrs[] = {
+ QCOM_SOCINFO_ATTR(chip_family, qcom_show_chip_family, 12),
+ QCOM_SOCINFO_ATTR(raw_device_family, qcom_show_raw_device_family, 12),
+ QCOM_SOCINFO_ATTR(raw_device_number, qcom_show_raw_device_number, 12),
+ QCOM_SOCINFO_ATTR(serial_number, qcom_show_serial_number, 10),
+ QCOM_SOCINFO_ATTR(foundry_id, qcom_show_foundry_id, 9),
+ QCOM_SOCINFO_ATTR(pmic_model, qcom_show_pmic_model, 7),
+ QCOM_SOCINFO_ATTR(pmic_die_revision, qcom_show_pmic_die_revision, 7),
+ QCOM_SOCINFO_ATTR(platform_subtype, qcom_show_platform_subtype, 6),
+ QCOM_SOCINFO_ATTR(accessory_chip, qcom_show_accessory_chip, 5),
+ QCOM_SOCINFO_ATTR(platform_version, qcom_show_platform_version, 4),
+ QCOM_SOCINFO_ATTR(hw_platform, qcom_show_hw_platform, 3),
+ QCOM_SOCINFO_ATTR(raw_version, qcom_show_raw_version, 2),
+ QCOM_SOCINFO_ATTR(build_id, qcom_show_build_id, 1),
+};
+
+QCOM_SMEM_IMG_ITEM(boot, 0444, SMEM_IMAGE_TABLE_BOOT_INDEX);
+QCOM_SMEM_IMG_ITEM(tz, 0444, SMEM_IMAGE_TABLE_TZ_INDEX);
+QCOM_SMEM_IMG_ITEM(rpm, 0444, SMEM_IMAGE_TABLE_RPM_INDEX);
+QCOM_SMEM_IMG_ITEM(apps, 0644, SMEM_IMAGE_TABLE_APPS_INDEX);
+QCOM_SMEM_IMG_ITEM(mpss, 0444, SMEM_IMAGE_TABLE_MPSS_INDEX);
+QCOM_SMEM_IMG_ITEM(adsp, 0444, SMEM_IMAGE_TABLE_ADSP_INDEX);
+QCOM_SMEM_IMG_ITEM(cnss, 0444, SMEM_IMAGE_TABLE_CNSS_INDEX);
+QCOM_SMEM_IMG_ITEM(video, 0444, SMEM_IMAGE_TABLE_VIDEO_INDEX);
+
+static const
+struct attribute_group *smem_img_tbl[SMEM_IMAGE_VERSION_BLOCKS_COUNT] = {
+ [SMEM_IMAGE_TABLE_BOOT_INDEX] = &boot_image_attr_group,
+ [SMEM_IMAGE_TABLE_TZ_INDEX] = &tz_image_attr_group,
+ [SMEM_IMAGE_TABLE_RPM_INDEX] = &rpm_image_attr_group,
+ [SMEM_IMAGE_TABLE_APPS_INDEX] = &apps_image_attr_group,
+ [SMEM_IMAGE_TABLE_MPSS_INDEX] = &mpss_image_attr_group,
+ [SMEM_IMAGE_TABLE_ADSP_INDEX] = &adsp_image_attr_group,
+ [SMEM_IMAGE_TABLE_CNSS_INDEX] = &cnss_image_attr_group,
+ [SMEM_IMAGE_TABLE_VIDEO_INDEX] = &video_image_attr_group,
+};
+
+static const char *socinfo_get_id_string(int id)
+{
+ int idx;
+
+ for (idx = 0; idx < ARRAY_SIZE(soc_of_id); idx++) {
+ if (soc_of_id[idx].id == id)
+ return soc_of_id[idx].name;
+ }
+
+ return NULL;
+}
+
+void qcom_socinfo_init(struct device *device)
+{
+ struct soc_device_attribute *attr;
+ struct soc_device *soc_dev;
+ struct device *dev;
+ size_t item_size;
+ size_t size;
+ int i;
+
+ socinfo = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_HW_SW_BUILD_ID,
+ &item_size);
+ if (IS_ERR(socinfo)) {
+ dev_err(device, "Couldn't find socinfo\n");
+ return;
+ }
+
+ if (SOCINFO_VERSION_MAJOR(le32_to_cpu(socinfo->fmt) != 0) ||
+ SOCINFO_VERSION_MINOR(le32_to_cpu(socinfo->fmt) < 0) ||
+ le32_to_cpu(socinfo->fmt) > MAX_SOCINFO_FORMAT) {
+ dev_err(device, "Wrong socinfo format\n");
+ return;
+ }
+
+ if (!le32_to_cpu(socinfo->id))
+ dev_err(device, "Unknown SoC ID!\n");
+
+ smem_image_version = qcom_smem_get(QCOM_SMEM_HOST_ANY,
+ SMEM_IMAGE_VERSION_TABLE,
+ &size);
+ if (IS_ERR(smem_image_version) || (size != SMEM_IMAGE_VERSION_SIZE)) {
+ dev_dbg(device, "Image version table absent\n");
+ smem_image_version = NULL;
+ }
+
+ attr = kzalloc(sizeof(*attr), GFP_KERNEL);
+ if (!attr)
+ return;
+
+ attr->soc_id = kasprintf(GFP_KERNEL, "%d",
+ le32_to_cpu(socinfo->id));
+ attr->family = "Snapdragon";
+ attr->machine = socinfo_get_id_string(le32_to_cpu(socinfo->id));
+ attr->revision = kasprintf(GFP_KERNEL, "%u.%u",
+ SOC_VER_MAJ(le32_to_cpu(socinfo->ver)),
+ SOC_VER_MIN(le32_to_cpu(socinfo->ver)));
+
+ soc_dev = soc_device_register(attr);
+ if (IS_ERR(soc_dev)) {
+ kfree(attr);
+ return;
+ }
+
+ dev = soc_device_to_device(soc_dev);
+
+ /*
+ * Expose SMEM_IMAGE_TABLE to sysfs only when we have IMAGE_TABLE
+ * available in SMEM. As IMAGE_TABLE and SOCINFO are two separate
+ * items within SMEM, we expose the remaining soc information (i.e
+ * only the SOCINFO item available in SMEM) to sysfs even in the
+ * absence of an IMAGE_TABLE.
+ */
+ if (smem_image_version) {
+ for (i = 0; i < SMEM_IMAGE_VERSION_BLOCKS_COUNT; i++) {
+ if (smem_img_tbl[i])
+ WARN_ON(sysfs_create_group(&dev->kobj,
+ smem_img_tbl[i]));
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(socinfo_attrs); i++) {
+ if (socinfo_attrs[i].min_ver <= le32_to_cpu(socinfo->fmt))
+ device_create_file(dev, &socinfo_attrs[i].attr);
+ }
+
+ /* Feed the soc specific unique data into entropy pool */
+ add_device_randomness(socinfo, item_size);
+}
+EXPORT_SYMBOL(qcom_socinfo_init);
--
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