Move out of device_add_group() variants, instead assign static array of
attribute groups to .dev_groups in platform_driver structure.
Then use is_visible to enable only the necessary files on the platform.
Signed-off-by: Suma Hegde <suma.hegde@xxxxxxx>
Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@xxxxxxx>
---
Changes since v2:
None
Changes since v1:
Change plat_dev to hsmp_pdev
drivers/platform/x86/amd/hsmp/acpi.c | 65 ++++++++--------
drivers/platform/x86/amd/hsmp/hsmp.c | 40 +---------
drivers/platform/x86/amd/hsmp/hsmp.h | 8 +-
drivers/platform/x86/amd/hsmp/plat.c | 106 +++++++++++++++++----------
4 files changed, 102 insertions(+), 117 deletions(-)
diff --git a/drivers/platform/x86/amd/hsmp/acpi.c b/drivers/platform/x86/amd/hsmp/acpi.c
index 7cb38c8dc627..4b1470ca8675 100644
--- a/drivers/platform/x86/amd/hsmp/acpi.c
+++ b/drivers/platform/x86/amd/hsmp/acpi.c
@@ -226,32 +226,9 @@ static int hsmp_parse_acpi_table(struct device *dev, u16 sock_ind)
return hsmp_read_acpi_dsd(sock);
}
-static int hsmp_create_acpi_sysfs_if(struct device *dev)
-{
- struct attribute_group *attr_grp;
- u16 sock_ind;
- int ret;
-
- attr_grp = devm_kzalloc(dev, sizeof(struct attribute_group), GFP_KERNEL);
- if (!attr_grp)
- return -ENOMEM;
-
- attr_grp->is_bin_visible = hsmp_is_sock_attr_visible;
-
- ret = hsmp_get_uid(dev, &sock_ind);
- if (ret)
- return ret;
-
- ret = hsmp_create_attr_list(attr_grp, dev, sock_ind);
- if (ret)
- return ret;
-
- return devm_device_add_group(dev, attr_grp);
-}
-
-ssize_t hsmp_metric_tbl_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr, char *buf,
- loff_t off, size_t count)
+static ssize_t hsmp_metric_tbl_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buf,
+ loff_t off, size_t count)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct hsmp_socket *sock = dev_get_drvdata(dev);
@@ -278,8 +255,8 @@ ssize_t hsmp_metric_tbl_read(struct file *filp, struct kobject *kobj,
return bin_attr->size;
}
-umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
- struct bin_attribute *battr, int id)
+static umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
+ struct bin_attribute *battr, int id)
{
if (hsmp_pdev.proto_ver == HSMP_PROTO_VER6)
return battr->attr.mode;
@@ -319,9 +296,36 @@ static int init_acpi(struct device *dev)
return ret;
}
+ if (hsmp_pdev.proto_ver == HSMP_PROTO_VER6) {
+ ret = hsmp_get_tbl_dram_base(sock_ind);
+ if (ret)
+ dev_err(dev, "Failed to init metric table\n");
+ }
+
return ret;
}
+static struct bin_attribute hsmp_metric_tbl_attr = {
+ .attr = { .name = HSMP_METRICS_TABLE_NAME, .mode = 0444},
+ .read = hsmp_metric_tbl_read,
+ .size = sizeof(struct hsmp_metric_table),
+};
+
+static struct bin_attribute *hsmp_attr_list[] = {
+ &hsmp_metric_tbl_attr,
+ NULL
+};
+
+static struct attribute_group hsmp_attr_grp = {
+ .bin_attrs = hsmp_attr_list,
+ .is_bin_visible = hsmp_is_sock_attr_visible,
+};
+
+static const struct attribute_group *hsmp_groups[] = {
+ &hsmp_attr_grp,
+ NULL
+};
+
static const struct acpi_device_id amd_hsmp_acpi_ids[] = {
{ACPI_HSMP_DEVICE_HID, 0},
{}
@@ -365,10 +369,6 @@ static int hsmp_acpi_probe(struct platform_device *pdev)
return ret;
}
- ret = hsmp_create_acpi_sysfs_if(&pdev->dev);
- if (ret)
- dev_err(&pdev->dev, "Failed to create HSMP sysfs interface\n");
-
if (!hsmp_pdev.is_probed) {
hsmp_pdev.mdev.name = HSMP_CDEV_NAME;
hsmp_pdev.mdev.minor = MISC_DYNAMIC_MINOR;
@@ -404,6 +404,7 @@ static struct platform_driver amd_hsmp_driver = {
.driver = {
.name = DRIVER_NAME,
.acpi_match_table = amd_hsmp_acpi_ids,
+ .dev_groups = hsmp_groups,
},
};
diff --git a/drivers/platform/x86/amd/hsmp/hsmp.c b/drivers/platform/x86/amd/hsmp/hsmp.c
index c906723ae2f2..c382b494b9c7 100644
--- a/drivers/platform/x86/amd/hsmp/hsmp.c
+++ b/drivers/platform/x86/amd/hsmp/hsmp.c
@@ -274,7 +274,7 @@ long hsmp_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
return 0;
}
-static int hsmp_get_tbl_dram_base(u16 sock_ind)
+int hsmp_get_tbl_dram_base(u16 sock_ind)
{
struct hsmp_socket *sock = &hsmp_pdev.sock[sock_ind];
struct hsmp_message msg = { 0 };
@@ -307,44 +307,6 @@ static int hsmp_get_tbl_dram_base(u16 sock_ind)
return 0;
}
-static int hsmp_init_metric_tbl_bin_attr(struct bin_attribute **hattrs, u16 sock_ind)
-{
- struct bin_attribute *hattr = &hsmp_pdev.sock[sock_ind].hsmp_attr;
-
- sysfs_bin_attr_init(hattr);
- hattr->attr.name = HSMP_METRICS_TABLE_NAME;
- hattr->attr.mode = 0444;
- hattr->read = hsmp_metric_tbl_read;
- hattr->size = sizeof(struct hsmp_metric_table);
- hattr->private = &hsmp_pdev.sock[sock_ind];
- hattrs[0] = hattr;
-
- if (hsmp_pdev.proto_ver == HSMP_PROTO_VER6)
- return hsmp_get_tbl_dram_base(sock_ind);
- else
- return 0;
-}
-
-/* One bin sysfs for metrics table */
-#define NUM_HSMP_ATTRS 1
-
-int hsmp_create_attr_list(struct attribute_group *attr_grp,
- struct device *dev, u16 sock_ind)
-{
- struct bin_attribute **hsmp_bin_attrs;
-
- /* Null terminated list of attributes */
- hsmp_bin_attrs = devm_kcalloc(dev, NUM_HSMP_ATTRS + 1,
- sizeof(*hsmp_bin_attrs),
- GFP_KERNEL);
- if (!hsmp_bin_attrs)
- return -ENOMEM;
-
- attr_grp->bin_attrs = hsmp_bin_attrs;
-
- return hsmp_init_metric_tbl_bin_attr(hsmp_bin_attrs, sock_ind);
-}
-
int hsmp_cache_proto_ver(u16 sock_ind)
{
struct hsmp_message msg = { 0 };
diff --git a/drivers/platform/x86/amd/hsmp/hsmp.h b/drivers/platform/x86/amd/hsmp/hsmp.h
index 5d4fc7735a87..b70f40c2726c 100644
--- a/drivers/platform/x86/amd/hsmp/hsmp.h
+++ b/drivers/platform/x86/amd/hsmp/hsmp.h
@@ -54,14 +54,8 @@ struct hsmp_plat_device {
extern struct hsmp_plat_device hsmp_pdev;
-ssize_t hsmp_metric_tbl_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr, char *buf,
- loff_t off, size_t count);
int hsmp_cache_proto_ver(u16 sock_ind);
long hsmp_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
-umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
- struct bin_attribute *battr, int id);
-int hsmp_create_attr_list(struct attribute_group *attr_grp,
- struct device *dev, u16 sock_ind);
int hsmp_test(u16 sock_ind, u32 value);
+int hsmp_get_tbl_dram_base(u16 sock_ind);
#endif /* HSMP_H */
diff --git a/drivers/platform/x86/amd/hsmp/plat.c b/drivers/platform/x86/amd/hsmp/plat.c
index c2b83363713f..33868346b5a0 100644
--- a/drivers/platform/x86/amd/hsmp/plat.c
+++ b/drivers/platform/x86/amd/hsmp/plat.c
@@ -61,39 +61,9 @@ static const struct file_operations hsmp_fops = {
.compat_ioctl = hsmp_ioctl,
};
-static int hsmp_create_non_acpi_sysfs_if(struct device *dev)
-{
- const struct attribute_group **hsmp_attr_grps;
- struct attribute_group *attr_grp;
- u16 i;
-
- hsmp_attr_grps = devm_kcalloc(dev, hsmp_pdev.num_sockets + 1,
- sizeof(*hsmp_attr_grps),
- GFP_KERNEL);
- if (!hsmp_attr_grps)
- return -ENOMEM;
-
- /* Create a sysfs directory for each socket */
- for (i = 0; i < hsmp_pdev.num_sockets; i++) {
- attr_grp = devm_kzalloc(dev, sizeof(struct attribute_group),
- GFP_KERNEL);
- if (!attr_grp)
- return -ENOMEM;
-
- snprintf(hsmp_pdev.sock[i].name, HSMP_ATTR_GRP_NAME_SIZE, "socket%u", (u8)i);
- attr_grp->name = hsmp_pdev.sock[i].name;
- attr_grp->is_bin_visible = hsmp_is_sock_attr_visible;
- hsmp_attr_grps[i] = attr_grp;
-
- hsmp_create_attr_list(attr_grp, dev, i);
- }
-
- return device_add_groups(dev, hsmp_attr_grps);
-}
-
-ssize_t hsmp_metric_tbl_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr, char *buf,
- loff_t off, size_t count)
+static ssize_t hsmp_metric_tbl_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buf,
+ loff_t off, size_t count)
{
struct hsmp_message msg = { 0 };
struct hsmp_socket *sock;
@@ -128,8 +98,8 @@ ssize_t hsmp_metric_tbl_read(struct file *filp, struct kobject *kobj,
return bin_attr->size;
}
-umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
- struct bin_attribute *battr, int id)
+static umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
+ struct bin_attribute *battr, int id)
{
u8 sock_ind;
int ret;
@@ -147,6 +117,61 @@ umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
return 0;
}
+/*
+ * AMD supports maximum of 8 sockets in a system.
+ * Static array of 8 + 1(for NULL) elements is created below
+ * to create sysfs groups for sockets.
+ * is_bin_visible function is used to show / hide the necessary groups.
+ */
+#define HSMP_BIN_ATTR(index, _list) \
+static struct bin_attribute attr##index = { \
+ .attr = { .name = HSMP_METRICS_TABLE_NAME, .mode = 0444}, \
+ .private = #index, \
+ .read = hsmp_metric_tbl_read, \
+ .size = sizeof(struct hsmp_metric_table), \
+}; \
+static struct bin_attribute _list[] = { \
+ &attr##index, \
+ NULL \
+}
+
+HSMP_BIN_ATTR(0, *sock0_attr_list);
+HSMP_BIN_ATTR(1, *sock1_attr_list);
+HSMP_BIN_ATTR(2, *sock2_attr_list);
+HSMP_BIN_ATTR(3, *sock3_attr_list);
+HSMP_BIN_ATTR(4, *sock4_attr_list);
+HSMP_BIN_ATTR(5, *sock5_attr_list);
+HSMP_BIN_ATTR(6, *sock6_attr_list);
+HSMP_BIN_ATTR(7, *sock7_attr_list);
+
+#define HSMP_BIN_ATTR_GRP(index, _list, _name) \
+static struct attribute_group sock##index##_attr_grp = { \
+ .bin_attrs = _list, \
+ .is_bin_visible = hsmp_is_sock_attr_visible, \
+ .name = #_name, \
+}
+
+HSMP_BIN_ATTR_GRP(0, sock0_attr_list, socket0);
+HSMP_BIN_ATTR_GRP(1, sock1_attr_list, socket1);
+HSMP_BIN_ATTR_GRP(2, sock2_attr_list, socket2);
+HSMP_BIN_ATTR_GRP(3, sock3_attr_list, socket3);
+HSMP_BIN_ATTR_GRP(4, sock4_attr_list, socket4);
+HSMP_BIN_ATTR_GRP(5, sock5_attr_list, socket5);
+HSMP_BIN_ATTR_GRP(6, sock6_attr_list, socket6);
+HSMP_BIN_ATTR_GRP(7, sock7_attr_list, socket7);
+
+static const struct attribute_group *hsmp_groups[] = {
+ &sock0_attr_grp,
+ &sock1_attr_grp,
+ &sock2_attr_grp,
+ &sock3_attr_grp,
+ &sock4_attr_grp,
+ &sock5_attr_grp,
+ &sock6_attr_grp,
+ &sock7_attr_grp,
+ NULL
+};
+
static inline bool is_f1a_m0h(void)
{
if (boot_cpu_data.x86 == 0x1A && boot_cpu_data.x86_model <= 0x0F)
@@ -197,6 +222,12 @@ static int init_platform_device(struct device *dev)
dev_err(dev, "Failed to read HSMP protocol version\n");
return ret;
}
+
+ if (hsmp_pdev.proto_ver == HSMP_PROTO_VER6) {
+ ret = hsmp_get_tbl_dram_base(i);
+ if (ret)
+ dev_err(dev, "Failed to init metric table\n");
+ }
}
return 0;
@@ -218,10 +249,6 @@ static int hsmp_pltdrv_probe(struct platform_device *pdev)
return ret;
}
- ret = hsmp_create_non_acpi_sysfs_if(&pdev->dev);
- if (ret)
- dev_err(&pdev->dev, "Failed to create HSMP sysfs interface\n");
-
hsmp_pdev.mdev.name = HSMP_CDEV_NAME;
hsmp_pdev.mdev.minor = MISC_DYNAMIC_MINOR;
hsmp_pdev.mdev.fops = &hsmp_fops;
@@ -242,6 +269,7 @@ static struct platform_driver amd_hsmp_driver = {
.remove_new = hsmp_pltdrv_remove,
.driver = {
.name = DRIVER_NAME,
+ .dev_groups = hsmp_groups,
},
};
--
2.25.1
