[PATCH v2 2/6] mei: Switch to use new generic UUID API

From: Tomas Winkler
Date: Mon Jul 24 2017 - 17:16:21 EST

From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>

There are new types and helpers that are supposed to be used in new code.

As a preparation to get rid of legacy types and API functions do
the conversion here.

Cc: Tomas Winkler <tomas.winkler@xxxxxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
---
V2:
1. Fixed file2alias compilation breakage
2. Dropped amt version sample from the patch
a. We need to see yet how to not break all our user space.
c. It had some checkpatch issues.

Still this is naming mess will require addition re-spin

drivers/misc/mei/bus-fixup.c | 35 +++++++++++++++++++----------------
drivers/misc/mei/bus.c | 14 +++++++-------
drivers/misc/mei/client.c | 21 ++++++++++-----------
drivers/misc/mei/client.h | 12 ++++++------
drivers/misc/mei/hbm.c | 2 +-
drivers/misc/mei/hw.h | 2 +-
drivers/misc/mei/main.c | 2 +-
drivers/nfc/mei_phy.h | 5 +++--
drivers/watchdog/mei_wdt.c | 5 +++--
include/linux/mei_cl_bus.h | 2 +-
include/linux/mod_devicetable.h | 8 ++++----
include/uapi/linux/mei.h | 4 +---
samples/mei/mei-amt-version.c | 23 ++++++++++++++++++-----
scripts/mod/file2alias.c | 6 +++---
14 files changed, 78 insertions(+), 63 deletions(-)

diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c
index 0208c4b027c5..9eaac4f2d427 100644
--- a/drivers/misc/mei/bus-fixup.c
+++ b/drivers/misc/mei/bus-fixup.c
@@ -27,21 +27,27 @@
#include "mei_dev.h"
#include "client.h"

-#define MEI_UUID_NFC_INFO UUID_LE(0xd2de1625, 0x382d, 0x417d, \
- 0x48, 0xa4, 0xef, 0xab, 0xba, 0x8a, 0x12, 0x06)
+#define MEI_UUID_NFC_INFO \
+ GUID_INIT(0xd2de1625, 0x382d, 0x417d, \
+ 0x48, 0xa4, 0xef, 0xab, 0xba, 0x8a, 0x12, 0x06)

-static const uuid_le mei_nfc_info_guid = MEI_UUID_NFC_INFO;
+static const guid_t mei_nfc_info_guid = MEI_UUID_NFC_INFO;

-#define MEI_UUID_NFC_HCI UUID_LE(0x0bb17a78, 0x2a8e, 0x4c50, \
- 0x94, 0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c)
+#define MEI_UUID_NFC_HCI \
+ GUID_INIT(0x0bb17a78, 0x2a8e, 0x4c50, \
+ 0x94, 0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c)

-#define MEI_UUID_WD UUID_LE(0x05B79A6F, 0x4628, 0x4D7F, \
- 0x89, 0x9D, 0xA9, 0x15, 0x14, 0xCB, 0x32, 0xAB)
+#define MEI_UUID_WD \
+ GUID_INIT(0x05B79A6F, 0x4628, 0x4D7F, \
+ 0x89, 0x9D, 0xA9, 0x15, 0x14, 0xCB, 0x32, 0xAB)

-#define MEI_UUID_MKHIF_FIX UUID_LE(0x55213584, 0x9a29, 0x4916, \
- 0xba, 0xdf, 0xf, 0xb7, 0xed, 0x68, 0x2a, 0xeb)
+#define MEI_UUID_MKHIF_FIX \
+ GUID_INIT(0x55213584, 0x9a29, 0x4916, \
+ 0xba, 0xdf, 0x0f, 0xb7, 0xed, 0x68, 0x2a, 0xeb)

-#define MEI_UUID_ANY NULL_UUID_LE
+#define MEI_UUID_ANY \
+ GUID_INIT(0x00000000, 0x0000, 0x0000, \
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)

/**
* number_of_connections - determine whether an client be on the bus
@@ -391,7 +397,7 @@ static void mei_nfc(struct mei_cl_device *cldev)

static struct mei_fixup {

- const uuid_le uuid;
+ const guid_t uuid;
void (*hook)(struct mei_cl_device *cldev);
} mei_fixups[] = {
MEI_FIXUP(MEI_UUID_ANY, number_of_connections),
@@ -409,15 +415,12 @@ static struct mei_fixup {
void mei_cl_bus_dev_fixup(struct mei_cl_device *cldev)
{
struct mei_fixup *f;
- const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl);
+ const guid_t *uuid = mei_me_cl_uuid(cldev->me_cl);
int i;

for (i = 0; i < ARRAY_SIZE(mei_fixups); i++) {
-
f = &mei_fixups[i];
- if (uuid_le_cmp(f->uuid, MEI_UUID_ANY) == 0 ||
- uuid_le_cmp(f->uuid, *uuid) == 0)
+ if (guid_is_null(&f->uuid) || guid_equal(&f->uuid, uuid))
f->hook(cldev);
}
}
-
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 40c79089e548..c5165f2ec842 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -417,7 +417,7 @@ EXPORT_SYMBOL_GPL(mei_cldev_set_drvdata);
*
* Return: me client uuid
*/
-const uuid_le *mei_cldev_uuid(const struct mei_cl_device *cldev)
+const guid_t *mei_cldev_uuid(const struct mei_cl_device *cldev)
{
return mei_me_cl_uuid(cldev->me_cl);
}
@@ -606,7 +606,7 @@ struct mei_cl_device_id *mei_cl_device_find(struct mei_cl_device *cldev,
struct mei_cl_driver *cldrv)
{
const struct mei_cl_device_id *id;
- const uuid_le *uuid;
+ const guid_t *uuid;
u8 version;
bool match;

@@ -614,8 +614,8 @@ struct mei_cl_device_id *mei_cl_device_find(struct mei_cl_device *cldev,
version = mei_me_cl_ver(cldev->me_cl);

id = cldrv->id_table;
- while (uuid_le_cmp(NULL_UUID_LE, id->uuid)) {
- if (!uuid_le_cmp(*uuid, id->uuid)) {
+ while (!guid_is_null(&id->uuid)) {
+ if (guid_equal(uuid, &id->uuid)) {
match = true;

if (cldev->name[0])
@@ -742,7 +742,7 @@ static ssize_t uuid_show(struct device *dev, struct device_attribute *a,
char *buf)
{
struct mei_cl_device *cldev = to_mei_cl_device(dev);
- const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl);
+ const guid_t *uuid = mei_me_cl_uuid(cldev->me_cl);

return scnprintf(buf, PAGE_SIZE, "%pUl", uuid);
}
@@ -762,7 +762,7 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
char *buf)
{
struct mei_cl_device *cldev = to_mei_cl_device(dev);
- const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl);
+ const guid_t *uuid = mei_me_cl_uuid(cldev->me_cl);
u8 version = mei_me_cl_ver(cldev->me_cl);

return scnprintf(buf, PAGE_SIZE, "mei:%s:%pUl:%02X:",
@@ -790,7 +790,7 @@ ATTRIBUTE_GROUPS(mei_cldev);
static int mei_cl_device_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct mei_cl_device *cldev = to_mei_cl_device(dev);
- const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl);
+ const guid_t *uuid = mei_me_cl_uuid(cldev->me_cl);
u8 version = mei_me_cl_ver(cldev->me_cl);

if (add_uevent_var(env, "MEI_CL_VERSION=%d", version))
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index be64969d986a..a44fb96452a9 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -139,16 +139,16 @@ void mei_me_cl_add(struct mei_device *dev, struct mei_me_client *me_cl)
* Locking: dev->me_clients_rwsem
*/
static struct mei_me_client *__mei_me_cl_by_uuid(struct mei_device *dev,
- const uuid_le *uuid)
+ const guid_t *uuid)
{
struct mei_me_client *me_cl;
- const uuid_le *pn;
+ const guid_t *pn;

WARN_ON(!rwsem_is_locked(&dev->me_clients_rwsem));

list_for_each_entry(me_cl, &dev->me_clients, list) {
pn = &me_cl->props.protocol_name;
- if (uuid_le_cmp(*uuid, *pn) == 0)
+ if (guid_equal(uuid, pn))
return mei_me_cl_get(me_cl);
}

@@ -167,7 +167,7 @@ static struct mei_me_client *__mei_me_cl_by_uuid(struct mei_device *dev,
* Locking: dev->me_clients_rwsem
*/
struct mei_me_client *mei_me_cl_by_uuid(struct mei_device *dev,
- const uuid_le *uuid)
+ const guid_t *uuid)
{
struct mei_me_client *me_cl;

@@ -219,17 +219,16 @@ struct mei_me_client *mei_me_cl_by_id(struct mei_device *dev, u8 client_id)
* Locking: dev->me_clients_rwsem
*/
static struct mei_me_client *__mei_me_cl_by_uuid_id(struct mei_device *dev,
- const uuid_le *uuid, u8 client_id)
+ const guid_t *uuid, u8 client_id)
{
struct mei_me_client *me_cl;
- const uuid_le *pn;
+ const guid_t *pn;

WARN_ON(!rwsem_is_locked(&dev->me_clients_rwsem));

list_for_each_entry(me_cl, &dev->me_clients, list) {
pn = &me_cl->props.protocol_name;
- if (uuid_le_cmp(*uuid, *pn) == 0 &&
- me_cl->client_id == client_id)
+ if (guid_equal(uuid, pn) && me_cl->client_id == client_id)
return mei_me_cl_get(me_cl);
}

@@ -248,7 +247,7 @@ static struct mei_me_client *__mei_me_cl_by_uuid_id(struct mei_device *dev,
* Return: me client or null if not found
*/
struct mei_me_client *mei_me_cl_by_uuid_id(struct mei_device *dev,
- const uuid_le *uuid, u8 client_id)
+ const guid_t *uuid, u8 client_id)
{
struct mei_me_client *me_cl;

@@ -267,7 +266,7 @@ struct mei_me_client *mei_me_cl_by_uuid_id(struct mei_device *dev,
*
* Locking: called under "dev->device_lock" lock
*/
-void mei_me_cl_rm_by_uuid(struct mei_device *dev, const uuid_le *uuid)
+void mei_me_cl_rm_by_uuid(struct mei_device *dev, const guid_t *uuid)
{
struct mei_me_client *me_cl;

@@ -288,7 +287,7 @@ void mei_me_cl_rm_by_uuid(struct mei_device *dev, const uuid_le *uuid)
*
* Locking: called under "dev->device_lock" lock
*/
-void mei_me_cl_rm_by_uuid_id(struct mei_device *dev, const uuid_le *uuid, u8 id)
+void mei_me_cl_rm_by_uuid_id(struct mei_device *dev, const guid_t *uuid, u8 id)
{
struct mei_me_client *me_cl;

diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h
index 5371df4d8af3..5d996e1e39fa 100644
--- a/drivers/misc/mei/client.h
+++ b/drivers/misc/mei/client.h
@@ -34,13 +34,13 @@ void mei_me_cl_add(struct mei_device *dev, struct mei_me_client *me_cl);
void mei_me_cl_del(struct mei_device *dev, struct mei_me_client *me_cl);

struct mei_me_client *mei_me_cl_by_uuid(struct mei_device *dev,
- const uuid_le *uuid);
+ const guid_t *uuid);
struct mei_me_client *mei_me_cl_by_id(struct mei_device *dev, u8 client_id);
struct mei_me_client *mei_me_cl_by_uuid_id(struct mei_device *dev,
- const uuid_le *uuid, u8 client_id);
-void mei_me_cl_rm_by_uuid(struct mei_device *dev, const uuid_le *uuid);
+ const guid_t *uuid, u8 client_id);
+void mei_me_cl_rm_by_uuid(struct mei_device *dev, const guid_t *uuid);
void mei_me_cl_rm_by_uuid_id(struct mei_device *dev,
- const uuid_le *uuid, u8 id);
+ const guid_t *uuid, u8 id);
void mei_me_cl_rm_all(struct mei_device *dev);

/**
@@ -62,7 +62,7 @@ static inline bool mei_me_cl_is_active(const struct mei_me_client *me_cl)
*
* Return: me client protocol name
*/
-static inline const uuid_le *mei_me_cl_uuid(const struct mei_me_client *me_cl)
+static inline const guid_t *mei_me_cl_uuid(const struct mei_me_client *me_cl)
{
return &me_cl->props.protocol_name;
}
@@ -177,7 +177,7 @@ static inline bool mei_cl_is_single_recv_buf(const struct mei_cl *cl)
*
* Return: return uuid of connected me client
*/
-static inline const uuid_le *mei_cl_uuid(const struct mei_cl *cl)
+static inline const guid_t *mei_cl_uuid(const struct mei_cl *cl)
{
return mei_me_cl_uuid(cl->me_cl);
}
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index fe6595fe94f1..059b8dfef67b 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -329,7 +329,7 @@ static int mei_hbm_me_cl_add(struct mei_device *dev,
struct hbm_props_response *res)
{
struct mei_me_client *me_cl;
- const uuid_le *uuid = &res->client_properties.protocol_name;
+ const guid_t *uuid = &res->client_properties.protocol_name;

mei_me_cl_rm_by_uuid(dev, uuid);

diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h
index 5c8286b40b62..e061f449ea75 100644
--- a/drivers/misc/mei/hw.h
+++ b/drivers/misc/mei/hw.h
@@ -288,7 +288,7 @@ struct hbm_host_enum_response {
} __packed;

struct mei_client_properties {
- uuid_le protocol_name;
+ guid_t protocol_name;
u8 protocol_version;
u8 max_number_of_connections;
u8 fixed_address;
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index e825f013e54e..be576c625f9f 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -342,7 +342,7 @@ static int mei_ioctl_connect_client(struct file *file,
return -EBUSY;

/* find ME client we're trying to connect to */
- me_cl = mei_me_cl_by_uuid(dev, &data->in_client_uuid);
+ me_cl = mei_me_cl_by_uuid(dev, (guid_t *)&data->in_client_uuid);
if (!me_cl) {
dev_dbg(dev->dev, "Cannot connect to FW Client UUID = %pUl\n",
&data->in_client_uuid);
diff --git a/drivers/nfc/mei_phy.h b/drivers/nfc/mei_phy.h
index acd3a1fc69e6..bf4775a111e8 100644
--- a/drivers/nfc/mei_phy.h
+++ b/drivers/nfc/mei_phy.h
@@ -5,8 +5,9 @@
#include <net/nfc/hci.h>
#include <linux/uuid.h>

-#define MEI_NFC_UUID UUID_LE(0x0bb17a78, 0x2a8e, 0x4c50, \
- 0x94, 0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c)
+#define MEI_NFC_UUID \
+ GUID_INIT(0x0bb17a78, 0x2a8e, 0x4c50, \
+ 0x94, 0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c)
#define MEI_NFC_HEADER_SIZE 10
#define MEI_NFC_MAX_HCI_PAYLOAD 300

diff --git a/drivers/watchdog/mei_wdt.c b/drivers/watchdog/mei_wdt.c
index b29c6fde7473..a0f052a96913 100644
--- a/drivers/watchdog/mei_wdt.c
+++ b/drivers/watchdog/mei_wdt.c
@@ -667,8 +667,9 @@ static int mei_wdt_remove(struct mei_cl_device *cldev)
return 0;
}

-#define MEI_UUID_WD UUID_LE(0x05B79A6F, 0x4628, 0x4D7F, \
- 0x89, 0x9D, 0xA9, 0x15, 0x14, 0xCB, 0x32, 0xAB)
+#define MEI_UUID_WD \
+ GUID_INIT(0x05B79A6F, 0x4628, 0x4D7F, \
+ 0x89, 0x9D, 0xA9, 0x15, 0x14, 0xCB, 0x32, 0xAB)

static struct mei_cl_device_id mei_wdt_tbl[] = {
{ .uuid = MEI_UUID_WD, .version = MEI_CL_VERSION_ANY },
diff --git a/include/linux/mei_cl_bus.h b/include/linux/mei_cl_bus.h
index a0d274fe08f1..81a860bfd076 100644
--- a/include/linux/mei_cl_bus.h
+++ b/include/linux/mei_cl_bus.h
@@ -94,7 +94,7 @@ int mei_cldev_register_rx_cb(struct mei_cl_device *cldev, mei_cldev_cb_t rx_cb);
int mei_cldev_register_notif_cb(struct mei_cl_device *cldev,
mei_cldev_cb_t notif_cb);

-const uuid_le *mei_cldev_uuid(const struct mei_cl_device *cldev);
+const guid_t *mei_cldev_uuid(const struct mei_cl_device *cldev);
u8 mei_cldev_ver(const struct mei_cl_device *cldev);

void *mei_cldev_get_drvdata(const struct mei_cl_device *cldev);
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 3f74ef2281e8..c36d274b7c91 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -405,7 +405,7 @@ struct virtio_device_id {
* For Hyper-V devices we use the device guid as the id.
*/
struct hv_vmbus_device_id {
- uuid_le guid;
+ guid_t guid;
kernel_ulong_t driver_data; /* Data private to the driver */
};

@@ -627,15 +627,15 @@ struct ipack_device_id {
/**
* struct mei_cl_device_id - MEI client device identifier
* @name: helper name
- * @uuid: client uuid
+ * @uuid: client GUID
* @version: client protocol version
* @driver_info: information used by the driver.
*
- * identifies mei client device by uuid and name
+ * identifies mei client device by GUID and name
*/
struct mei_cl_device_id {
char name[MEI_CL_NAME_SIZE];
- uuid_le uuid;
+ guid_t uuid;
__u8 version;
kernel_ulong_t driver_info;
};
diff --git a/include/uapi/linux/mei.h b/include/uapi/linux/mei.h
index 7c3b64f6a215..cf02d56a13e6 100644
--- a/include/uapi/linux/mei.h
+++ b/include/uapi/linux/mei.h
@@ -67,8 +67,6 @@
#ifndef _LINUX_MEI_H
#define _LINUX_MEI_H

-#include <linux/uuid.h>
-
/*
* This IOCTL is used to associate the current file descriptor with a
* FW Client (given by UUID). This opens a communication channel
@@ -102,7 +100,7 @@ struct mei_client {
*/
struct mei_connect_client_data {
union {
- uuid_le in_client_uuid;
+ __u8 in_client_uuid[16];
struct mei_client out_client_properties;
};
};
diff --git a/samples/mei/mei-amt-version.c b/samples/mei/mei-amt-version.c
index 57d0d871dcf7..396915e37d3b 100644
--- a/samples/mei/mei-amt-version.c
+++ b/samples/mei/mei-amt-version.c
@@ -89,8 +89,20 @@
fprintf(stderr, "Error: " fmt, ##ARGS); \
} while (0)

+/* FIXME: Use libuuid instead */
+typedef struct {
+ __u8 b[16];
+} guid_t;
+
+#define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
+((guid_t) \
+{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
+ (b) & 0xff, ((b) >> 8) & 0xff, \
+ (c) & 0xff, ((c) >> 8) & 0xff, \
+ (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
+
struct mei {
- uuid_le guid;
+ guid_t guid;
bool initialized;
bool verbose;
unsigned int buf_size;
@@ -108,8 +120,8 @@ static void mei_deinit(struct mei *cl)
cl->initialized = false;
}

-static bool mei_init(struct mei *me, const uuid_le *guid,
- unsigned char req_protocol_version, bool verbose)
+static bool mei_init(struct mei *me, const guid_t *guid,
+ unsigned char req_protocol_version, bool verbose)
{
int result;
struct mei_client *cl;
@@ -270,8 +282,9 @@ struct amt_host_if_resp_header {
unsigned char data[0];
} __attribute__((packed));

-const uuid_le MEI_IAMTHIF = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, \
- 0xac, 0xa8, 0x46, 0xe0, 0xff, 0x65, 0x81, 0x4c);
+const guid_t MEI_IAMTHIF =
+ GUID_INIT(0x12f80028, 0xb4b7, 0x4b2d,
+ 0xac, 0xa8, 0x46, 0xe0, 0xff, 0x65, 0x81, 0x4c);

#define AMT_HOST_IF_CODE_VERSIONS_REQUEST 0x0400001A
#define AMT_HOST_IF_CODE_VERSIONS_RESPONSE 0x0480001A
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 29d6699d5a06..045ec1a10e25 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -36,7 +36,7 @@ typedef uint16_t __u16;
typedef unsigned char __u8;
typedef struct {
__u8 b[16];
-} uuid_le;
+} guid_t;

/* Big exception to the "don't include kernel headers into userspace, which
* even potentially has different endianness and word sizes, since
@@ -134,7 +134,7 @@ static inline void add_wildcard(char *str)
strcat(str + len, "*");
}

-static inline void add_uuid(char *str, uuid_le uuid)
+static inline void add_guid(char *str, guid_t uuid)
{
int len = strlen(str);

@@ -1230,7 +1230,7 @@ static int do_mei_entry(const char *filename, void *symval,

sprintf(alias, MEI_CL_MODULE_PREFIX);
sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
- add_uuid(alias, *uuid);
+ add_guid(alias, *uuid);
ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);

strcat(alias, ":*");
--
2.9.4