* [PATCH v2 1/4] samples: move misc-devices/mei example code from Documentation
2016-09-21 19:47 [PATCH v2 0/4] Move runnable examples code from Documentation to samples Shuah Khan
@ 2016-09-21 19:47 ` Shuah Khan
2016-09-21 19:52 ` Greg KH
2016-09-21 21:00 ` Winkler, Tomas
2016-09-21 19:47 ` [PATCH v2 2/4] samples: move timers " Shuah Khan
` (3 subsequent siblings)
4 siblings, 2 replies; 8+ messages in thread
From: Shuah Khan @ 2016-09-21 19:47 UTC (permalink / raw)
To: corbet, tomas.winkler, tglx, clemens, wim, linux, davem, geert,
akpm, gregkh, kvalo, mchehab, ghackmann, ben, maheshkhanwalkar
Cc: Shuah Khan, linux-doc, linux-kernel, linux-watchdog
Move misc-devices/mei examples to samples/mei and remove it from
Documentation Makefile. Delete misc-devices/Makefile.
Create a new Makefile to build samples/mei. It can be built from top
level directory or from mei directory:
Run make -C samples/mei or cd samples/mei; make
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
Documentation/Makefile | 2 +-
Documentation/misc-devices/Makefile | 1 -
Documentation/misc-devices/mei/.gitignore | 1 -
Documentation/misc-devices/mei/Makefile | 5 -
Documentation/misc-devices/mei/TODO | 2 -
Documentation/misc-devices/mei/mei-amt-version.c | 479 -----------------------
MAINTAINERS | 1 +
samples/mei/.gitignore | 1 +
samples/mei/Makefile | 9 +
samples/mei/TODO | 2 +
samples/mei/mei-amt-version.c | 479 +++++++++++++++++++++++
11 files changed, 493 insertions(+), 489 deletions(-)
delete mode 100644 Documentation/misc-devices/Makefile
delete mode 100644 Documentation/misc-devices/mei/.gitignore
delete mode 100644 Documentation/misc-devices/mei/Makefile
delete mode 100644 Documentation/misc-devices/mei/TODO
delete mode 100644 Documentation/misc-devices/mei/mei-amt-version.c
create mode 100644 samples/mei/.gitignore
create mode 100644 samples/mei/Makefile
create mode 100644 samples/mei/TODO
create mode 100644 samples/mei/mei-amt-version.c
diff --git a/Documentation/Makefile b/Documentation/Makefile
index 80b5bdc..3c2a207 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,2 +1,2 @@
subdir-y := accounting auxdisplay blackfin \
- laptops misc-devices pcmcia timers watchdog
+ laptops pcmcia timers watchdog
diff --git a/Documentation/misc-devices/Makefile b/Documentation/misc-devices/Makefile
deleted file mode 100644
index e2b7aa4..0000000
--- a/Documentation/misc-devices/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-subdir-y := mei
diff --git a/Documentation/misc-devices/mei/.gitignore b/Documentation/misc-devices/mei/.gitignore
deleted file mode 100644
index f356b81..0000000
--- a/Documentation/misc-devices/mei/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-mei-amt-version
diff --git a/Documentation/misc-devices/mei/Makefile b/Documentation/misc-devices/mei/Makefile
deleted file mode 100644
index d758047..0000000
--- a/Documentation/misc-devices/mei/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-# List of programs to build
-hostprogs-y := mei-amt-version
-HOSTCFLAGS_mei-amt-version.o += -I$(objtree)/usr/include
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
diff --git a/Documentation/misc-devices/mei/TODO b/Documentation/misc-devices/mei/TODO
deleted file mode 100644
index 6b3625d..0000000
--- a/Documentation/misc-devices/mei/TODO
+++ /dev/null
@@ -1,2 +0,0 @@
-TODO:
- - Cleanup and split the timer function
diff --git a/Documentation/misc-devices/mei/mei-amt-version.c b/Documentation/misc-devices/mei/mei-amt-version.c
deleted file mode 100644
index 57d0d87..0000000
--- a/Documentation/misc-devices/mei/mei-amt-version.c
+++ /dev/null
@@ -1,479 +0,0 @@
-/******************************************************************************
- * Intel Management Engine Interface (Intel MEI) Linux driver
- * Intel MEI Interface Header
- *
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2012 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
- * USA
- *
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * Contact Information:
- * Intel Corporation.
- * linux-mei@linux.intel.com
- * http://www.intel.com
- *
- * BSD LICENSE
- *
- * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *****************************************************************************/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <unistd.h>
-#include <errno.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <bits/wordsize.h>
-#include <linux/mei.h>
-
-/*****************************************************************************
- * Intel Management Engine Interface
- *****************************************************************************/
-
-#define mei_msg(_me, fmt, ARGS...) do { \
- if (_me->verbose) \
- fprintf(stderr, fmt, ##ARGS); \
-} while (0)
-
-#define mei_err(_me, fmt, ARGS...) do { \
- fprintf(stderr, "Error: " fmt, ##ARGS); \
-} while (0)
-
-struct mei {
- uuid_le guid;
- bool initialized;
- bool verbose;
- unsigned int buf_size;
- unsigned char prot_ver;
- int fd;
-};
-
-static void mei_deinit(struct mei *cl)
-{
- if (cl->fd != -1)
- close(cl->fd);
- cl->fd = -1;
- cl->buf_size = 0;
- cl->prot_ver = 0;
- cl->initialized = false;
-}
-
-static bool mei_init(struct mei *me, const uuid_le *guid,
- unsigned char req_protocol_version, bool verbose)
-{
- int result;
- struct mei_client *cl;
- struct mei_connect_client_data data;
-
- me->verbose = verbose;
-
- me->fd = open("/dev/mei", O_RDWR);
- if (me->fd == -1) {
- mei_err(me, "Cannot establish a handle to the Intel MEI driver\n");
- goto err;
- }
- memcpy(&me->guid, guid, sizeof(*guid));
- memset(&data, 0, sizeof(data));
- me->initialized = true;
-
- memcpy(&data.in_client_uuid, &me->guid, sizeof(me->guid));
- result = ioctl(me->fd, IOCTL_MEI_CONNECT_CLIENT, &data);
- if (result) {
- mei_err(me, "IOCTL_MEI_CONNECT_CLIENT receive message. err=%d\n", result);
- goto err;
- }
- cl = &data.out_client_properties;
- mei_msg(me, "max_message_length %d\n", cl->max_msg_length);
- mei_msg(me, "protocol_version %d\n", cl->protocol_version);
-
- if ((req_protocol_version > 0) &&
- (cl->protocol_version != req_protocol_version)) {
- mei_err(me, "Intel MEI protocol version not supported\n");
- goto err;
- }
-
- me->buf_size = cl->max_msg_length;
- me->prot_ver = cl->protocol_version;
-
- return true;
-err:
- mei_deinit(me);
- return false;
-}
-
-static ssize_t mei_recv_msg(struct mei *me, unsigned char *buffer,
- ssize_t len, unsigned long timeout)
-{
- ssize_t rc;
-
- mei_msg(me, "call read length = %zd\n", len);
-
- rc = read(me->fd, buffer, len);
- if (rc < 0) {
- mei_err(me, "read failed with status %zd %s\n",
- rc, strerror(errno));
- mei_deinit(me);
- } else {
- mei_msg(me, "read succeeded with result %zd\n", rc);
- }
- return rc;
-}
-
-static ssize_t mei_send_msg(struct mei *me, const unsigned char *buffer,
- ssize_t len, unsigned long timeout)
-{
- struct timeval tv;
- ssize_t written;
- ssize_t rc;
- fd_set set;
-
- tv.tv_sec = timeout / 1000;
- tv.tv_usec = (timeout % 1000) * 1000000;
-
- mei_msg(me, "call write length = %zd\n", len);
-
- written = write(me->fd, buffer, len);
- if (written < 0) {
- rc = -errno;
- mei_err(me, "write failed with status %zd %s\n",
- written, strerror(errno));
- goto out;
- }
-
- FD_ZERO(&set);
- FD_SET(me->fd, &set);
- rc = select(me->fd + 1 , &set, NULL, NULL, &tv);
- if (rc > 0 && FD_ISSET(me->fd, &set)) {
- mei_msg(me, "write success\n");
- } else if (rc == 0) {
- mei_err(me, "write failed on timeout with status\n");
- goto out;
- } else { /* rc < 0 */
- mei_err(me, "write failed on select with status %zd\n", rc);
- goto out;
- }
-
- rc = written;
-out:
- if (rc < 0)
- mei_deinit(me);
-
- return rc;
-}
-
-/***************************************************************************
- * Intel Advanced Management Technology ME Client
- ***************************************************************************/
-
-#define AMT_MAJOR_VERSION 1
-#define AMT_MINOR_VERSION 1
-
-#define AMT_STATUS_SUCCESS 0x0
-#define AMT_STATUS_INTERNAL_ERROR 0x1
-#define AMT_STATUS_NOT_READY 0x2
-#define AMT_STATUS_INVALID_AMT_MODE 0x3
-#define AMT_STATUS_INVALID_MESSAGE_LENGTH 0x4
-
-#define AMT_STATUS_HOST_IF_EMPTY_RESPONSE 0x4000
-#define AMT_STATUS_SDK_RESOURCES 0x1004
-
-
-#define AMT_BIOS_VERSION_LEN 65
-#define AMT_VERSIONS_NUMBER 50
-#define AMT_UNICODE_STRING_LEN 20
-
-struct amt_unicode_string {
- uint16_t length;
- char string[AMT_UNICODE_STRING_LEN];
-} __attribute__((packed));
-
-struct amt_version_type {
- struct amt_unicode_string description;
- struct amt_unicode_string version;
-} __attribute__((packed));
-
-struct amt_version {
- uint8_t major;
- uint8_t minor;
-} __attribute__((packed));
-
-struct amt_code_versions {
- uint8_t bios[AMT_BIOS_VERSION_LEN];
- uint32_t count;
- struct amt_version_type versions[AMT_VERSIONS_NUMBER];
-} __attribute__((packed));
-
-/***************************************************************************
- * Intel Advanced Management Technology Host Interface
- ***************************************************************************/
-
-struct amt_host_if_msg_header {
- struct amt_version version;
- uint16_t _reserved;
- uint32_t command;
- uint32_t length;
-} __attribute__((packed));
-
-struct amt_host_if_resp_header {
- struct amt_host_if_msg_header header;
- uint32_t status;
- unsigned char data[0];
-} __attribute__((packed));
-
-const uuid_le MEI_IAMTHIF = UUID_LE(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
-
-const struct amt_host_if_msg_header CODE_VERSION_REQ = {
- .version = {AMT_MAJOR_VERSION, AMT_MINOR_VERSION},
- ._reserved = 0,
- .command = AMT_HOST_IF_CODE_VERSIONS_REQUEST,
- .length = 0
-};
-
-
-struct amt_host_if {
- struct mei mei_cl;
- unsigned long send_timeout;
- bool initialized;
-};
-
-
-static bool amt_host_if_init(struct amt_host_if *acmd,
- unsigned long send_timeout, bool verbose)
-{
- acmd->send_timeout = (send_timeout) ? send_timeout : 20000;
- acmd->initialized = mei_init(&acmd->mei_cl, &MEI_IAMTHIF, 0, verbose);
- return acmd->initialized;
-}
-
-static void amt_host_if_deinit(struct amt_host_if *acmd)
-{
- mei_deinit(&acmd->mei_cl);
- acmd->initialized = false;
-}
-
-static uint32_t amt_verify_code_versions(const struct amt_host_if_resp_header *resp)
-{
- uint32_t status = AMT_STATUS_SUCCESS;
- struct amt_code_versions *code_ver;
- size_t code_ver_len;
- uint32_t ver_type_cnt;
- uint32_t len;
- uint32_t i;
-
- code_ver = (struct amt_code_versions *)resp->data;
- /* length - sizeof(status) */
- code_ver_len = resp->header.length - sizeof(uint32_t);
- ver_type_cnt = code_ver_len -
- sizeof(code_ver->bios) -
- sizeof(code_ver->count);
- if (code_ver->count != ver_type_cnt / sizeof(struct amt_version_type)) {
- status = AMT_STATUS_INTERNAL_ERROR;
- goto out;
- }
-
- for (i = 0; i < code_ver->count; i++) {
- len = code_ver->versions[i].description.length;
-
- if (len > AMT_UNICODE_STRING_LEN) {
- status = AMT_STATUS_INTERNAL_ERROR;
- goto out;
- }
-
- len = code_ver->versions[i].version.length;
- if (code_ver->versions[i].version.string[len] != '\0' ||
- len != strlen(code_ver->versions[i].version.string)) {
- status = AMT_STATUS_INTERNAL_ERROR;
- goto out;
- }
- }
-out:
- return status;
-}
-
-static uint32_t amt_verify_response_header(uint32_t command,
- const struct amt_host_if_msg_header *resp_hdr,
- uint32_t response_size)
-{
- if (response_size < sizeof(struct amt_host_if_resp_header)) {
- return AMT_STATUS_INTERNAL_ERROR;
- } else if (response_size != (resp_hdr->length +
- sizeof(struct amt_host_if_msg_header))) {
- return AMT_STATUS_INTERNAL_ERROR;
- } else if (resp_hdr->command != command) {
- return AMT_STATUS_INTERNAL_ERROR;
- } else if (resp_hdr->_reserved != 0) {
- return AMT_STATUS_INTERNAL_ERROR;
- } else if (resp_hdr->version.major != AMT_MAJOR_VERSION ||
- resp_hdr->version.minor < AMT_MINOR_VERSION) {
- return AMT_STATUS_INTERNAL_ERROR;
- }
- return AMT_STATUS_SUCCESS;
-}
-
-static uint32_t amt_host_if_call(struct amt_host_if *acmd,
- const unsigned char *command, ssize_t command_sz,
- uint8_t **read_buf, uint32_t rcmd,
- unsigned int expected_sz)
-{
- uint32_t in_buf_sz;
- uint32_t out_buf_sz;
- ssize_t written;
- uint32_t status;
- struct amt_host_if_resp_header *msg_hdr;
-
- in_buf_sz = acmd->mei_cl.buf_size;
- *read_buf = (uint8_t *)malloc(sizeof(uint8_t) * in_buf_sz);
- if (*read_buf == NULL)
- return AMT_STATUS_SDK_RESOURCES;
- memset(*read_buf, 0, in_buf_sz);
- msg_hdr = (struct amt_host_if_resp_header *)*read_buf;
-
- written = mei_send_msg(&acmd->mei_cl,
- command, command_sz, acmd->send_timeout);
- if (written != command_sz)
- return AMT_STATUS_INTERNAL_ERROR;
-
- out_buf_sz = mei_recv_msg(&acmd->mei_cl, *read_buf, in_buf_sz, 2000);
- if (out_buf_sz <= 0)
- return AMT_STATUS_HOST_IF_EMPTY_RESPONSE;
-
- status = msg_hdr->status;
- if (status != AMT_STATUS_SUCCESS)
- return status;
-
- status = amt_verify_response_header(rcmd,
- &msg_hdr->header, out_buf_sz);
- if (status != AMT_STATUS_SUCCESS)
- return status;
-
- if (expected_sz && expected_sz != out_buf_sz)
- return AMT_STATUS_INTERNAL_ERROR;
-
- return AMT_STATUS_SUCCESS;
-}
-
-
-static uint32_t amt_get_code_versions(struct amt_host_if *cmd,
- struct amt_code_versions *versions)
-{
- struct amt_host_if_resp_header *response = NULL;
- uint32_t status;
-
- status = amt_host_if_call(cmd,
- (const unsigned char *)&CODE_VERSION_REQ,
- sizeof(CODE_VERSION_REQ),
- (uint8_t **)&response,
- AMT_HOST_IF_CODE_VERSIONS_RESPONSE, 0);
-
- if (status != AMT_STATUS_SUCCESS)
- goto out;
-
- status = amt_verify_code_versions(response);
- if (status != AMT_STATUS_SUCCESS)
- goto out;
-
- memcpy(versions, response->data, sizeof(struct amt_code_versions));
-out:
- if (response != NULL)
- free(response);
-
- return status;
-}
-
-/************************** end of amt_host_if_command ***********************/
-int main(int argc, char **argv)
-{
- struct amt_code_versions ver;
- struct amt_host_if acmd;
- unsigned int i;
- uint32_t status;
- int ret;
- bool verbose;
-
- verbose = (argc > 1 && strcmp(argv[1], "-v") == 0);
-
- if (!amt_host_if_init(&acmd, 5000, verbose)) {
- ret = 1;
- goto out;
- }
-
- status = amt_get_code_versions(&acmd, &ver);
-
- amt_host_if_deinit(&acmd);
-
- switch (status) {
- case AMT_STATUS_HOST_IF_EMPTY_RESPONSE:
- printf("Intel AMT: DISABLED\n");
- ret = 0;
- break;
- case AMT_STATUS_SUCCESS:
- printf("Intel AMT: ENABLED\n");
- for (i = 0; i < ver.count; i++) {
- printf("%s:\t%s\n", ver.versions[i].description.string,
- ver.versions[i].version.string);
- }
- ret = 0;
- break;
- default:
- printf("An error has occurred\n");
- ret = 1;
- break;
- }
-
-out:
- return ret;
-}
diff --git a/MAINTAINERS b/MAINTAINERS
index a5e1270..afd3577 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6261,6 +6261,7 @@ F: include/linux/mei_cl_bus.h
F: drivers/misc/mei/*
F: drivers/watchdog/mei_wdt.c
F: Documentation/misc-devices/mei/*
+F: samples/mei/*
INTEL MIC DRIVERS (mic)
M: Sudeep Dutt <sudeep.dutt@intel.com>
diff --git a/samples/mei/.gitignore b/samples/mei/.gitignore
new file mode 100644
index 0000000..f356b81
--- /dev/null
+++ b/samples/mei/.gitignore
@@ -0,0 +1 @@
+mei-amt-version
diff --git a/samples/mei/Makefile b/samples/mei/Makefile
new file mode 100644
index 0000000..7aac216
--- /dev/null
+++ b/samples/mei/Makefile
@@ -0,0 +1,9 @@
+CC := $(CROSS_COMPILE)gcc
+CFLAGS := -I../../usr/include
+
+PROGS := mei-amt-version
+
+all: $(PROGS)
+
+clean:
+ rm -fr $(PROGS)
diff --git a/samples/mei/TODO b/samples/mei/TODO
new file mode 100644
index 0000000..6b3625d
--- /dev/null
+++ b/samples/mei/TODO
@@ -0,0 +1,2 @@
+TODO:
+ - Cleanup and split the timer function
diff --git a/samples/mei/mei-amt-version.c b/samples/mei/mei-amt-version.c
new file mode 100644
index 0000000..57d0d87
--- /dev/null
+++ b/samples/mei/mei-amt-version.c
@@ -0,0 +1,479 @@
+/******************************************************************************
+ * Intel Management Engine Interface (Intel MEI) Linux driver
+ * Intel MEI Interface Header
+ *
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2012 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Corporation.
+ * linux-mei@linux.intel.com
+ * http://www.intel.com
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <bits/wordsize.h>
+#include <linux/mei.h>
+
+/*****************************************************************************
+ * Intel Management Engine Interface
+ *****************************************************************************/
+
+#define mei_msg(_me, fmt, ARGS...) do { \
+ if (_me->verbose) \
+ fprintf(stderr, fmt, ##ARGS); \
+} while (0)
+
+#define mei_err(_me, fmt, ARGS...) do { \
+ fprintf(stderr, "Error: " fmt, ##ARGS); \
+} while (0)
+
+struct mei {
+ uuid_le guid;
+ bool initialized;
+ bool verbose;
+ unsigned int buf_size;
+ unsigned char prot_ver;
+ int fd;
+};
+
+static void mei_deinit(struct mei *cl)
+{
+ if (cl->fd != -1)
+ close(cl->fd);
+ cl->fd = -1;
+ cl->buf_size = 0;
+ cl->prot_ver = 0;
+ cl->initialized = false;
+}
+
+static bool mei_init(struct mei *me, const uuid_le *guid,
+ unsigned char req_protocol_version, bool verbose)
+{
+ int result;
+ struct mei_client *cl;
+ struct mei_connect_client_data data;
+
+ me->verbose = verbose;
+
+ me->fd = open("/dev/mei", O_RDWR);
+ if (me->fd == -1) {
+ mei_err(me, "Cannot establish a handle to the Intel MEI driver\n");
+ goto err;
+ }
+ memcpy(&me->guid, guid, sizeof(*guid));
+ memset(&data, 0, sizeof(data));
+ me->initialized = true;
+
+ memcpy(&data.in_client_uuid, &me->guid, sizeof(me->guid));
+ result = ioctl(me->fd, IOCTL_MEI_CONNECT_CLIENT, &data);
+ if (result) {
+ mei_err(me, "IOCTL_MEI_CONNECT_CLIENT receive message. err=%d\n", result);
+ goto err;
+ }
+ cl = &data.out_client_properties;
+ mei_msg(me, "max_message_length %d\n", cl->max_msg_length);
+ mei_msg(me, "protocol_version %d\n", cl->protocol_version);
+
+ if ((req_protocol_version > 0) &&
+ (cl->protocol_version != req_protocol_version)) {
+ mei_err(me, "Intel MEI protocol version not supported\n");
+ goto err;
+ }
+
+ me->buf_size = cl->max_msg_length;
+ me->prot_ver = cl->protocol_version;
+
+ return true;
+err:
+ mei_deinit(me);
+ return false;
+}
+
+static ssize_t mei_recv_msg(struct mei *me, unsigned char *buffer,
+ ssize_t len, unsigned long timeout)
+{
+ ssize_t rc;
+
+ mei_msg(me, "call read length = %zd\n", len);
+
+ rc = read(me->fd, buffer, len);
+ if (rc < 0) {
+ mei_err(me, "read failed with status %zd %s\n",
+ rc, strerror(errno));
+ mei_deinit(me);
+ } else {
+ mei_msg(me, "read succeeded with result %zd\n", rc);
+ }
+ return rc;
+}
+
+static ssize_t mei_send_msg(struct mei *me, const unsigned char *buffer,
+ ssize_t len, unsigned long timeout)
+{
+ struct timeval tv;
+ ssize_t written;
+ ssize_t rc;
+ fd_set set;
+
+ tv.tv_sec = timeout / 1000;
+ tv.tv_usec = (timeout % 1000) * 1000000;
+
+ mei_msg(me, "call write length = %zd\n", len);
+
+ written = write(me->fd, buffer, len);
+ if (written < 0) {
+ rc = -errno;
+ mei_err(me, "write failed with status %zd %s\n",
+ written, strerror(errno));
+ goto out;
+ }
+
+ FD_ZERO(&set);
+ FD_SET(me->fd, &set);
+ rc = select(me->fd + 1 , &set, NULL, NULL, &tv);
+ if (rc > 0 && FD_ISSET(me->fd, &set)) {
+ mei_msg(me, "write success\n");
+ } else if (rc == 0) {
+ mei_err(me, "write failed on timeout with status\n");
+ goto out;
+ } else { /* rc < 0 */
+ mei_err(me, "write failed on select with status %zd\n", rc);
+ goto out;
+ }
+
+ rc = written;
+out:
+ if (rc < 0)
+ mei_deinit(me);
+
+ return rc;
+}
+
+/***************************************************************************
+ * Intel Advanced Management Technology ME Client
+ ***************************************************************************/
+
+#define AMT_MAJOR_VERSION 1
+#define AMT_MINOR_VERSION 1
+
+#define AMT_STATUS_SUCCESS 0x0
+#define AMT_STATUS_INTERNAL_ERROR 0x1
+#define AMT_STATUS_NOT_READY 0x2
+#define AMT_STATUS_INVALID_AMT_MODE 0x3
+#define AMT_STATUS_INVALID_MESSAGE_LENGTH 0x4
+
+#define AMT_STATUS_HOST_IF_EMPTY_RESPONSE 0x4000
+#define AMT_STATUS_SDK_RESOURCES 0x1004
+
+
+#define AMT_BIOS_VERSION_LEN 65
+#define AMT_VERSIONS_NUMBER 50
+#define AMT_UNICODE_STRING_LEN 20
+
+struct amt_unicode_string {
+ uint16_t length;
+ char string[AMT_UNICODE_STRING_LEN];
+} __attribute__((packed));
+
+struct amt_version_type {
+ struct amt_unicode_string description;
+ struct amt_unicode_string version;
+} __attribute__((packed));
+
+struct amt_version {
+ uint8_t major;
+ uint8_t minor;
+} __attribute__((packed));
+
+struct amt_code_versions {
+ uint8_t bios[AMT_BIOS_VERSION_LEN];
+ uint32_t count;
+ struct amt_version_type versions[AMT_VERSIONS_NUMBER];
+} __attribute__((packed));
+
+/***************************************************************************
+ * Intel Advanced Management Technology Host Interface
+ ***************************************************************************/
+
+struct amt_host_if_msg_header {
+ struct amt_version version;
+ uint16_t _reserved;
+ uint32_t command;
+ uint32_t length;
+} __attribute__((packed));
+
+struct amt_host_if_resp_header {
+ struct amt_host_if_msg_header header;
+ uint32_t status;
+ unsigned char data[0];
+} __attribute__((packed));
+
+const uuid_le MEI_IAMTHIF = UUID_LE(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
+
+const struct amt_host_if_msg_header CODE_VERSION_REQ = {
+ .version = {AMT_MAJOR_VERSION, AMT_MINOR_VERSION},
+ ._reserved = 0,
+ .command = AMT_HOST_IF_CODE_VERSIONS_REQUEST,
+ .length = 0
+};
+
+
+struct amt_host_if {
+ struct mei mei_cl;
+ unsigned long send_timeout;
+ bool initialized;
+};
+
+
+static bool amt_host_if_init(struct amt_host_if *acmd,
+ unsigned long send_timeout, bool verbose)
+{
+ acmd->send_timeout = (send_timeout) ? send_timeout : 20000;
+ acmd->initialized = mei_init(&acmd->mei_cl, &MEI_IAMTHIF, 0, verbose);
+ return acmd->initialized;
+}
+
+static void amt_host_if_deinit(struct amt_host_if *acmd)
+{
+ mei_deinit(&acmd->mei_cl);
+ acmd->initialized = false;
+}
+
+static uint32_t amt_verify_code_versions(const struct amt_host_if_resp_header *resp)
+{
+ uint32_t status = AMT_STATUS_SUCCESS;
+ struct amt_code_versions *code_ver;
+ size_t code_ver_len;
+ uint32_t ver_type_cnt;
+ uint32_t len;
+ uint32_t i;
+
+ code_ver = (struct amt_code_versions *)resp->data;
+ /* length - sizeof(status) */
+ code_ver_len = resp->header.length - sizeof(uint32_t);
+ ver_type_cnt = code_ver_len -
+ sizeof(code_ver->bios) -
+ sizeof(code_ver->count);
+ if (code_ver->count != ver_type_cnt / sizeof(struct amt_version_type)) {
+ status = AMT_STATUS_INTERNAL_ERROR;
+ goto out;
+ }
+
+ for (i = 0; i < code_ver->count; i++) {
+ len = code_ver->versions[i].description.length;
+
+ if (len > AMT_UNICODE_STRING_LEN) {
+ status = AMT_STATUS_INTERNAL_ERROR;
+ goto out;
+ }
+
+ len = code_ver->versions[i].version.length;
+ if (code_ver->versions[i].version.string[len] != '\0' ||
+ len != strlen(code_ver->versions[i].version.string)) {
+ status = AMT_STATUS_INTERNAL_ERROR;
+ goto out;
+ }
+ }
+out:
+ return status;
+}
+
+static uint32_t amt_verify_response_header(uint32_t command,
+ const struct amt_host_if_msg_header *resp_hdr,
+ uint32_t response_size)
+{
+ if (response_size < sizeof(struct amt_host_if_resp_header)) {
+ return AMT_STATUS_INTERNAL_ERROR;
+ } else if (response_size != (resp_hdr->length +
+ sizeof(struct amt_host_if_msg_header))) {
+ return AMT_STATUS_INTERNAL_ERROR;
+ } else if (resp_hdr->command != command) {
+ return AMT_STATUS_INTERNAL_ERROR;
+ } else if (resp_hdr->_reserved != 0) {
+ return AMT_STATUS_INTERNAL_ERROR;
+ } else if (resp_hdr->version.major != AMT_MAJOR_VERSION ||
+ resp_hdr->version.minor < AMT_MINOR_VERSION) {
+ return AMT_STATUS_INTERNAL_ERROR;
+ }
+ return AMT_STATUS_SUCCESS;
+}
+
+static uint32_t amt_host_if_call(struct amt_host_if *acmd,
+ const unsigned char *command, ssize_t command_sz,
+ uint8_t **read_buf, uint32_t rcmd,
+ unsigned int expected_sz)
+{
+ uint32_t in_buf_sz;
+ uint32_t out_buf_sz;
+ ssize_t written;
+ uint32_t status;
+ struct amt_host_if_resp_header *msg_hdr;
+
+ in_buf_sz = acmd->mei_cl.buf_size;
+ *read_buf = (uint8_t *)malloc(sizeof(uint8_t) * in_buf_sz);
+ if (*read_buf == NULL)
+ return AMT_STATUS_SDK_RESOURCES;
+ memset(*read_buf, 0, in_buf_sz);
+ msg_hdr = (struct amt_host_if_resp_header *)*read_buf;
+
+ written = mei_send_msg(&acmd->mei_cl,
+ command, command_sz, acmd->send_timeout);
+ if (written != command_sz)
+ return AMT_STATUS_INTERNAL_ERROR;
+
+ out_buf_sz = mei_recv_msg(&acmd->mei_cl, *read_buf, in_buf_sz, 2000);
+ if (out_buf_sz <= 0)
+ return AMT_STATUS_HOST_IF_EMPTY_RESPONSE;
+
+ status = msg_hdr->status;
+ if (status != AMT_STATUS_SUCCESS)
+ return status;
+
+ status = amt_verify_response_header(rcmd,
+ &msg_hdr->header, out_buf_sz);
+ if (status != AMT_STATUS_SUCCESS)
+ return status;
+
+ if (expected_sz && expected_sz != out_buf_sz)
+ return AMT_STATUS_INTERNAL_ERROR;
+
+ return AMT_STATUS_SUCCESS;
+}
+
+
+static uint32_t amt_get_code_versions(struct amt_host_if *cmd,
+ struct amt_code_versions *versions)
+{
+ struct amt_host_if_resp_header *response = NULL;
+ uint32_t status;
+
+ status = amt_host_if_call(cmd,
+ (const unsigned char *)&CODE_VERSION_REQ,
+ sizeof(CODE_VERSION_REQ),
+ (uint8_t **)&response,
+ AMT_HOST_IF_CODE_VERSIONS_RESPONSE, 0);
+
+ if (status != AMT_STATUS_SUCCESS)
+ goto out;
+
+ status = amt_verify_code_versions(response);
+ if (status != AMT_STATUS_SUCCESS)
+ goto out;
+
+ memcpy(versions, response->data, sizeof(struct amt_code_versions));
+out:
+ if (response != NULL)
+ free(response);
+
+ return status;
+}
+
+/************************** end of amt_host_if_command ***********************/
+int main(int argc, char **argv)
+{
+ struct amt_code_versions ver;
+ struct amt_host_if acmd;
+ unsigned int i;
+ uint32_t status;
+ int ret;
+ bool verbose;
+
+ verbose = (argc > 1 && strcmp(argv[1], "-v") == 0);
+
+ if (!amt_host_if_init(&acmd, 5000, verbose)) {
+ ret = 1;
+ goto out;
+ }
+
+ status = amt_get_code_versions(&acmd, &ver);
+
+ amt_host_if_deinit(&acmd);
+
+ switch (status) {
+ case AMT_STATUS_HOST_IF_EMPTY_RESPONSE:
+ printf("Intel AMT: DISABLED\n");
+ ret = 0;
+ break;
+ case AMT_STATUS_SUCCESS:
+ printf("Intel AMT: ENABLED\n");
+ for (i = 0; i < ver.count; i++) {
+ printf("%s:\t%s\n", ver.versions[i].description.string,
+ ver.versions[i].version.string);
+ }
+ ret = 0;
+ break;
+ default:
+ printf("An error has occurred\n");
+ ret = 1;
+ break;
+ }
+
+out:
+ return ret;
+}
--
2.7.4
^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [PATCH v2 1/4] samples: move misc-devices/mei example code from Documentation
2016-09-21 19:47 ` [PATCH v2 1/4] samples: move misc-devices/mei example code from Documentation Shuah Khan
@ 2016-09-21 19:52 ` Greg KH
2016-09-21 21:00 ` Winkler, Tomas
1 sibling, 0 replies; 8+ messages in thread
From: Greg KH @ 2016-09-21 19:52 UTC (permalink / raw)
To: Shuah Khan
Cc: corbet, tomas.winkler, tglx, clemens, wim, linux, davem, geert,
akpm, kvalo, mchehab, ghackmann, ben, maheshkhanwalkar, linux-doc,
linux-kernel, linux-watchdog
On Wed, Sep 21, 2016 at 01:47:30PM -0600, Shuah Khan wrote:
> Move misc-devices/mei examples to samples/mei and remove it from
> Documentation Makefile. Delete misc-devices/Makefile.
>
> Create a new Makefile to build samples/mei. It can be built from top
> level directory or from mei directory:
>
> Run make -C samples/mei or cd samples/mei; make
>
> Acked-by: Jonathan Corbet <corbet@lwn.net>
> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
> ---
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
^ permalink raw reply [flat|nested] 8+ messages in thread
* RE: [PATCH v2 1/4] samples: move misc-devices/mei example code from Documentation
2016-09-21 19:47 ` [PATCH v2 1/4] samples: move misc-devices/mei example code from Documentation Shuah Khan
2016-09-21 19:52 ` Greg KH
@ 2016-09-21 21:00 ` Winkler, Tomas
1 sibling, 0 replies; 8+ messages in thread
From: Winkler, Tomas @ 2016-09-21 21:00 UTC (permalink / raw)
To: Shuah Khan, corbet@lwn.net, tglx@linutronix.de,
clemens@ladisch.de, wim@iguana.be, linux@roeck-us.net,
davem@davemloft.net, geert@linux-m68k.org,
akpm@linux-foundation.org, gregkh@linuxfoundation.org,
kvalo@codeaurora.org, mchehab@kernel.org, ghackmann@google.com,
ben@decadent.org.uk, maheshkhanwalkar@gmail.com
Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-watchdog@vger.kernel.org
>
> Move misc-devices/mei examples to samples/mei and remove it from
> Documentation Makefile. Delete misc-devices/Makefile.
>
> Create a new Makefile to build samples/mei. It can be built from top level
> directory or from mei directory:
>
> Run make -C samples/mei or cd samples/mei; make
>
> Acked-by: Jonathan Corbet <corbet@lwn.net>
> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
> ---
> Documentation/Makefile | 2 +-
> Documentation/misc-devices/Makefile | 1 -
> Documentation/misc-devices/mei/.gitignore | 1 -
> Documentation/misc-devices/mei/Makefile | 5 -
> Documentation/misc-devices/mei/TODO | 2 -
> Documentation/misc-devices/mei/mei-amt-version.c | 479 --------------------
> ---
> MAINTAINERS | 1 +
> samples/mei/.gitignore | 1 +
> samples/mei/Makefile | 9 +
> samples/mei/TODO | 2 +
> samples/mei/mei-amt-version.c | 479
> +++++++++++++++++++++++
> 11 files changed, 493 insertions(+), 489 deletions(-) delete mode 100644
> Documentation/misc-devices/Makefile
> delete mode 100644 Documentation/misc-devices/mei/.gitignore
> delete mode 100644 Documentation/misc-devices/mei/Makefile
> delete mode 100644 Documentation/misc-devices/mei/TODO
> delete mode 100644 Documentation/misc-devices/mei/mei-amt-version.c
> create mode 100644 samples/mei/.gitignore create mode 100644
> samples/mei/Makefile create mode 100644 samples/mei/TODO create
> mode 100644 samples/mei/mei-amt-version.c
>
> diff --git a/Documentation/Makefile b/Documentation/Makefile index
> 80b5bdc..3c2a207 100644
> --- a/Documentation/Makefile
> +++ b/Documentation/Makefile
> @@ -1,2 +1,2 @@
> subdir-y := accounting auxdisplay blackfin \
> - laptops misc-devices pcmcia timers watchdog
> + laptops pcmcia timers watchdog
> diff --git a/Documentation/misc-devices/Makefile b/Documentation/misc-
> devices/Makefile
> deleted file mode 100644
> index e2b7aa4..0000000
> --- a/Documentation/misc-devices/Makefile
> +++ /dev/null
> @@ -1 +0,0 @@
> -subdir-y := mei
> diff --git a/Documentation/misc-devices/mei/.gitignore
> b/Documentation/misc-devices/mei/.gitignore
> deleted file mode 100644
> index f356b81..0000000
> --- a/Documentation/misc-devices/mei/.gitignore
> +++ /dev/null
> @@ -1 +0,0 @@
> -mei-amt-version
> diff --git a/Documentation/misc-devices/mei/Makefile
> b/Documentation/misc-devices/mei/Makefile
> deleted file mode 100644
> index d758047..0000000
> --- a/Documentation/misc-devices/mei/Makefile
> +++ /dev/null
> @@ -1,5 +0,0 @@
> -# List of programs to build
> -hostprogs-y := mei-amt-version
> -HOSTCFLAGS_mei-amt-version.o += -I$(objtree)/usr/include -# Tell kbuild
> to always build the programs -always := $(hostprogs-y) diff --git
> a/Documentation/misc-devices/mei/TODO b/Documentation/misc-
> devices/mei/TODO
> deleted file mode 100644
> index 6b3625d..0000000
> --- a/Documentation/misc-devices/mei/TODO
> +++ /dev/null
> @@ -1,2 +0,0 @@
> -TODO:
> - - Cleanup and split the timer function
> diff --git a/Documentation/misc-devices/mei/mei-amt-version.c
> b/Documentation/misc-devices/mei/mei-amt-version.c
> deleted file mode 100644
> index 57d0d87..0000000
> --- a/Documentation/misc-devices/mei/mei-amt-version.c
> +++ /dev/null
> @@ -1,479 +0,0 @@
> -
> /**********************************************************
> ********************
> - * Intel Management Engine Interface (Intel MEI) Linux driver
> - * Intel MEI Interface Header
> - *
> - * This file is provided under a dual BSD/GPLv2 license. When using or
> - * redistributing this file, you may do so under either license.
> - *
> - * GPL LICENSE SUMMARY
> - *
> - * Copyright(c) 2012 Intel Corporation. All rights reserved.
> - *
> - * This program is free software; you can redistribute it and/or modify
> - * it under the terms of version 2 of the GNU General Public License 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.
> - *
> - * You should have received a copy of the GNU General Public License
> - * along with this program; if not, write to the Free Software
> - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
> - * USA
> - *
> - * The full GNU General Public License is included in this distribution
> - * in the file called LICENSE.GPL.
> - *
> - * Contact Information:
> - * Intel Corporation.
> - * linux-mei@linux.intel.com
> - * http://www.intel.com
> - *
> - * BSD LICENSE
> - *
> - * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
> - * All rights reserved.
> - *
> - * Redistribution and use in source and binary forms, with or without
> - * modification, are permitted provided that the following conditions
> - * are met:
> - *
> - * * Redistributions of source code must retain the above copyright
> - * notice, this list of conditions and the following disclaimer.
> - * * Redistributions in binary form must reproduce the above copyright
> - * notice, this list of conditions and the following disclaimer in
> - * the documentation and/or other materials provided with the
> - * distribution.
> - * * Neither the name Intel Corporation nor the names of its
> - * contributors may be used to endorse or promote products derived
> - * from this software without specific prior written permission.
> - *
> - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
> CONTRIBUTORS
> - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
> NOT
> - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
> FITNESS FOR
> - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
> COPYRIGHT
> - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
> INCIDENTAL,
> - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
> NOT
> - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
> OF USE,
> - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
> AND ON ANY
> - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
> THE USE
> - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
> DAMAGE.
> - *
> -
> **********************************************************
> *******************/
> -
> -#include <stdio.h>
> -#include <stdlib.h>
> -#include <string.h>
> -#include <fcntl.h>
> -#include <sys/ioctl.h>
> -#include <unistd.h>
> -#include <errno.h>
> -#include <stdint.h>
> -#include <stdbool.h>
> -#include <bits/wordsize.h>
> -#include <linux/mei.h>
> -
> -
> /**********************************************************
> *******************
> - * Intel Management Engine Interface
> -
> **********************************************************
> *******************/
> -
> -#define mei_msg(_me, fmt, ARGS...) do { \
> - if (_me->verbose) \
> - fprintf(stderr, fmt, ##ARGS); \
> -} while (0)
> -
> -#define mei_err(_me, fmt, ARGS...) do { \
> - fprintf(stderr, "Error: " fmt, ##ARGS); \
> -} while (0)
> -
> -struct mei {
> - uuid_le guid;
> - bool initialized;
> - bool verbose;
> - unsigned int buf_size;
> - unsigned char prot_ver;
> - int fd;
> -};
> -
> -static void mei_deinit(struct mei *cl)
> -{
> - if (cl->fd != -1)
> - close(cl->fd);
> - cl->fd = -1;
> - cl->buf_size = 0;
> - cl->prot_ver = 0;
> - cl->initialized = false;
> -}
> -
> -static bool mei_init(struct mei *me, const uuid_le *guid,
> - unsigned char req_protocol_version, bool verbose)
> -{
> - int result;
> - struct mei_client *cl;
> - struct mei_connect_client_data data;
> -
> - me->verbose = verbose;
> -
> - me->fd = open("/dev/mei", O_RDWR);
> - if (me->fd == -1) {
> - mei_err(me, "Cannot establish a handle to the Intel MEI
> driver\n");
> - goto err;
> - }
> - memcpy(&me->guid, guid, sizeof(*guid));
> - memset(&data, 0, sizeof(data));
> - me->initialized = true;
> -
> - memcpy(&data.in_client_uuid, &me->guid, sizeof(me->guid));
> - result = ioctl(me->fd, IOCTL_MEI_CONNECT_CLIENT, &data);
> - if (result) {
> - mei_err(me, "IOCTL_MEI_CONNECT_CLIENT receive
> message. err=%d\n", result);
> - goto err;
> - }
> - cl = &data.out_client_properties;
> - mei_msg(me, "max_message_length %d\n", cl->max_msg_length);
> - mei_msg(me, "protocol_version %d\n", cl->protocol_version);
> -
> - if ((req_protocol_version > 0) &&
> - (cl->protocol_version != req_protocol_version)) {
> - mei_err(me, "Intel MEI protocol version not supported\n");
> - goto err;
> - }
> -
> - me->buf_size = cl->max_msg_length;
> - me->prot_ver = cl->protocol_version;
> -
> - return true;
> -err:
> - mei_deinit(me);
> - return false;
> -}
> -
> -static ssize_t mei_recv_msg(struct mei *me, unsigned char *buffer,
> - ssize_t len, unsigned long timeout)
> -{
> - ssize_t rc;
> -
> - mei_msg(me, "call read length = %zd\n", len);
> -
> - rc = read(me->fd, buffer, len);
> - if (rc < 0) {
> - mei_err(me, "read failed with status %zd %s\n",
> - rc, strerror(errno));
> - mei_deinit(me);
> - } else {
> - mei_msg(me, "read succeeded with result %zd\n", rc);
> - }
> - return rc;
> -}
> -
> -static ssize_t mei_send_msg(struct mei *me, const unsigned char *buffer,
> - ssize_t len, unsigned long timeout)
> -{
> - struct timeval tv;
> - ssize_t written;
> - ssize_t rc;
> - fd_set set;
> -
> - tv.tv_sec = timeout / 1000;
> - tv.tv_usec = (timeout % 1000) * 1000000;
> -
> - mei_msg(me, "call write length = %zd\n", len);
> -
> - written = write(me->fd, buffer, len);
> - if (written < 0) {
> - rc = -errno;
> - mei_err(me, "write failed with status %zd %s\n",
> - written, strerror(errno));
> - goto out;
> - }
> -
> - FD_ZERO(&set);
> - FD_SET(me->fd, &set);
> - rc = select(me->fd + 1 , &set, NULL, NULL, &tv);
> - if (rc > 0 && FD_ISSET(me->fd, &set)) {
> - mei_msg(me, "write success\n");
> - } else if (rc == 0) {
> - mei_err(me, "write failed on timeout with status\n");
> - goto out;
> - } else { /* rc < 0 */
> - mei_err(me, "write failed on select with status %zd\n", rc);
> - goto out;
> - }
> -
> - rc = written;
> -out:
> - if (rc < 0)
> - mei_deinit(me);
> -
> - return rc;
> -}
> -
> -
> /**********************************************************
> *****************
> - * Intel Advanced Management Technology ME Client
> -
> **********************************************************
> *****************/
> -
> -#define AMT_MAJOR_VERSION 1
> -#define AMT_MINOR_VERSION 1
> -
> -#define AMT_STATUS_SUCCESS 0x0
> -#define AMT_STATUS_INTERNAL_ERROR 0x1
> -#define AMT_STATUS_NOT_READY 0x2
> -#define AMT_STATUS_INVALID_AMT_MODE 0x3
> -#define AMT_STATUS_INVALID_MESSAGE_LENGTH 0x4
> -
> -#define AMT_STATUS_HOST_IF_EMPTY_RESPONSE 0x4000
> -#define AMT_STATUS_SDK_RESOURCES 0x1004
> -
> -
> -#define AMT_BIOS_VERSION_LEN 65
> -#define AMT_VERSIONS_NUMBER 50
> -#define AMT_UNICODE_STRING_LEN 20
> -
> -struct amt_unicode_string {
> - uint16_t length;
> - char string[AMT_UNICODE_STRING_LEN];
> -} __attribute__((packed));
> -
> -struct amt_version_type {
> - struct amt_unicode_string description;
> - struct amt_unicode_string version;
> -} __attribute__((packed));
> -
> -struct amt_version {
> - uint8_t major;
> - uint8_t minor;
> -} __attribute__((packed));
> -
> -struct amt_code_versions {
> - uint8_t bios[AMT_BIOS_VERSION_LEN];
> - uint32_t count;
> - struct amt_version_type versions[AMT_VERSIONS_NUMBER];
> -} __attribute__((packed));
> -
> -
> /**********************************************************
> *****************
> - * Intel Advanced Management Technology Host Interface
> -
> **********************************************************
> *****************/
> -
> -struct amt_host_if_msg_header {
> - struct amt_version version;
> - uint16_t _reserved;
> - uint32_t command;
> - uint32_t length;
> -} __attribute__((packed));
> -
> -struct amt_host_if_resp_header {
> - struct amt_host_if_msg_header header;
> - uint32_t status;
> - unsigned char data[0];
> -} __attribute__((packed));
> -
> -const uuid_le MEI_IAMTHIF = UUID_LE(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
> -
> -const struct amt_host_if_msg_header CODE_VERSION_REQ = {
> - .version = {AMT_MAJOR_VERSION, AMT_MINOR_VERSION},
> - ._reserved = 0,
> - .command = AMT_HOST_IF_CODE_VERSIONS_REQUEST,
> - .length = 0
> -};
> -
> -
> -struct amt_host_if {
> - struct mei mei_cl;
> - unsigned long send_timeout;
> - bool initialized;
> -};
> -
> -
> -static bool amt_host_if_init(struct amt_host_if *acmd,
> - unsigned long send_timeout, bool verbose)
> -{
> - acmd->send_timeout = (send_timeout) ? send_timeout : 20000;
> - acmd->initialized = mei_init(&acmd->mei_cl, &MEI_IAMTHIF, 0,
> verbose);
> - return acmd->initialized;
> -}
> -
> -static void amt_host_if_deinit(struct amt_host_if *acmd) -{
> - mei_deinit(&acmd->mei_cl);
> - acmd->initialized = false;
> -}
> -
> -static uint32_t amt_verify_code_versions(const struct
> amt_host_if_resp_header *resp) -{
> - uint32_t status = AMT_STATUS_SUCCESS;
> - struct amt_code_versions *code_ver;
> - size_t code_ver_len;
> - uint32_t ver_type_cnt;
> - uint32_t len;
> - uint32_t i;
> -
> - code_ver = (struct amt_code_versions *)resp->data;
> - /* length - sizeof(status) */
> - code_ver_len = resp->header.length - sizeof(uint32_t);
> - ver_type_cnt = code_ver_len -
> - sizeof(code_ver->bios) -
> - sizeof(code_ver->count);
> - if (code_ver->count != ver_type_cnt / sizeof(struct
> amt_version_type)) {
> - status = AMT_STATUS_INTERNAL_ERROR;
> - goto out;
> - }
> -
> - for (i = 0; i < code_ver->count; i++) {
> - len = code_ver->versions[i].description.length;
> -
> - if (len > AMT_UNICODE_STRING_LEN) {
> - status = AMT_STATUS_INTERNAL_ERROR;
> - goto out;
> - }
> -
> - len = code_ver->versions[i].version.length;
> - if (code_ver->versions[i].version.string[len] != '\0' ||
> - len != strlen(code_ver->versions[i].version.string)) {
> - status = AMT_STATUS_INTERNAL_ERROR;
> - goto out;
> - }
> - }
> -out:
> - return status;
> -}
> -
> -static uint32_t amt_verify_response_header(uint32_t command,
> - const struct amt_host_if_msg_header
> *resp_hdr,
> - uint32_t response_size)
> -{
> - if (response_size < sizeof(struct amt_host_if_resp_header)) {
> - return AMT_STATUS_INTERNAL_ERROR;
> - } else if (response_size != (resp_hdr->length +
> - sizeof(struct amt_host_if_msg_header))) {
> - return AMT_STATUS_INTERNAL_ERROR;
> - } else if (resp_hdr->command != command) {
> - return AMT_STATUS_INTERNAL_ERROR;
> - } else if (resp_hdr->_reserved != 0) {
> - return AMT_STATUS_INTERNAL_ERROR;
> - } else if (resp_hdr->version.major != AMT_MAJOR_VERSION ||
> - resp_hdr->version.minor < AMT_MINOR_VERSION) {
> - return AMT_STATUS_INTERNAL_ERROR;
> - }
> - return AMT_STATUS_SUCCESS;
> -}
> -
> -static uint32_t amt_host_if_call(struct amt_host_if *acmd,
> - const unsigned char *command, ssize_t
> command_sz,
> - uint8_t **read_buf, uint32_t rcmd,
> - unsigned int expected_sz)
> -{
> - uint32_t in_buf_sz;
> - uint32_t out_buf_sz;
> - ssize_t written;
> - uint32_t status;
> - struct amt_host_if_resp_header *msg_hdr;
> -
> - in_buf_sz = acmd->mei_cl.buf_size;
> - *read_buf = (uint8_t *)malloc(sizeof(uint8_t) * in_buf_sz);
> - if (*read_buf == NULL)
> - return AMT_STATUS_SDK_RESOURCES;
> - memset(*read_buf, 0, in_buf_sz);
> - msg_hdr = (struct amt_host_if_resp_header *)*read_buf;
> -
> - written = mei_send_msg(&acmd->mei_cl,
> - command, command_sz, acmd-
> >send_timeout);
> - if (written != command_sz)
> - return AMT_STATUS_INTERNAL_ERROR;
> -
> - out_buf_sz = mei_recv_msg(&acmd->mei_cl, *read_buf, in_buf_sz,
> 2000);
> - if (out_buf_sz <= 0)
> - return AMT_STATUS_HOST_IF_EMPTY_RESPONSE;
> -
> - status = msg_hdr->status;
> - if (status != AMT_STATUS_SUCCESS)
> - return status;
> -
> - status = amt_verify_response_header(rcmd,
> - &msg_hdr->header, out_buf_sz);
> - if (status != AMT_STATUS_SUCCESS)
> - return status;
> -
> - if (expected_sz && expected_sz != out_buf_sz)
> - return AMT_STATUS_INTERNAL_ERROR;
> -
> - return AMT_STATUS_SUCCESS;
> -}
> -
> -
> -static uint32_t amt_get_code_versions(struct amt_host_if *cmd,
> - struct amt_code_versions *versions)
> -{
> - struct amt_host_if_resp_header *response = NULL;
> - uint32_t status;
> -
> - status = amt_host_if_call(cmd,
> - (const unsigned char *)&CODE_VERSION_REQ,
> - sizeof(CODE_VERSION_REQ),
> - (uint8_t **)&response,
> - AMT_HOST_IF_CODE_VERSIONS_RESPONSE, 0);
> -
> - if (status != AMT_STATUS_SUCCESS)
> - goto out;
> -
> - status = amt_verify_code_versions(response);
> - if (status != AMT_STATUS_SUCCESS)
> - goto out;
> -
> - memcpy(versions, response->data, sizeof(struct
> amt_code_versions));
> -out:
> - if (response != NULL)
> - free(response);
> -
> - return status;
> -}
> -
> -/************************** end of amt_host_if_command
> ***********************/ -int main(int argc, char **argv) -{
> - struct amt_code_versions ver;
> - struct amt_host_if acmd;
> - unsigned int i;
> - uint32_t status;
> - int ret;
> - bool verbose;
> -
> - verbose = (argc > 1 && strcmp(argv[1], "-v") == 0);
> -
> - if (!amt_host_if_init(&acmd, 5000, verbose)) {
> - ret = 1;
> - goto out;
> - }
> -
> - status = amt_get_code_versions(&acmd, &ver);
> -
> - amt_host_if_deinit(&acmd);
> -
> - switch (status) {
> - case AMT_STATUS_HOST_IF_EMPTY_RESPONSE:
> - printf("Intel AMT: DISABLED\n");
> - ret = 0;
> - break;
> - case AMT_STATUS_SUCCESS:
> - printf("Intel AMT: ENABLED\n");
> - for (i = 0; i < ver.count; i++) {
> - printf("%s:\t%s\n", ver.versions[i].description.string,
> - ver.versions[i].version.string);
> - }
> - ret = 0;
> - break;
> - default:
> - printf("An error has occurred\n");
> - ret = 1;
> - break;
> - }
> -
> -out:
> - return ret;
> -}
> diff --git a/MAINTAINERS b/MAINTAINERS
> index a5e1270..afd3577 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -6261,6 +6261,7 @@ F: include/linux/mei_cl_bus.h
> F: drivers/misc/mei/*
> F: drivers/watchdog/mei_wdt.c
> F: Documentation/misc-devices/mei/*
> +F: samples/mei/*
>
> INTEL MIC DRIVERS (mic)
> M: Sudeep Dutt <sudeep.dutt@intel.com>
> diff --git a/samples/mei/.gitignore b/samples/mei/.gitignore new file mode
> 100644 index 0000000..f356b81
> --- /dev/null
> +++ b/samples/mei/.gitignore
> @@ -0,0 +1 @@
> +mei-amt-version
> diff --git a/samples/mei/Makefile b/samples/mei/Makefile new file mode
> 100644 index 0000000..7aac216
> --- /dev/null
> +++ b/samples/mei/Makefile
> @@ -0,0 +1,9 @@
> +CC := $(CROSS_COMPILE)gcc
> +CFLAGS := -I../../usr/include
> +
> +PROGS := mei-amt-version
> +
> +all: $(PROGS)
> +
> +clean:
> + rm -fr $(PROGS)
> diff --git a/samples/mei/TODO b/samples/mei/TODO new file mode 100644
> index 0000000..6b3625d
> --- /dev/null
> +++ b/samples/mei/TODO
> @@ -0,0 +1,2 @@
> +TODO:
> + - Cleanup and split the timer function
> diff --git a/samples/mei/mei-amt-version.c b/samples/mei/mei-amt-
> version.c new file mode 100644 index 0000000..57d0d87
> --- /dev/null
> +++ b/samples/mei/mei-amt-version.c
> @@ -0,0 +1,479 @@
> +/*********************************************************
> *************
> +********
> + * Intel Management Engine Interface (Intel MEI) Linux driver
> + * Intel MEI Interface Header
> + *
> + * This file is provided under a dual BSD/GPLv2 license. When using or
> + * redistributing this file, you may do so under either license.
> + *
> + * GPL LICENSE SUMMARY
> + *
> + * Copyright(c) 2012 Intel Corporation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of version 2 of the GNU General Public License 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.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
> + * USA
> + *
> + * The full GNU General Public License is included in this distribution
> + * in the file called LICENSE.GPL.
> + *
> + * Contact Information:
> + * Intel Corporation.
> + * linux-mei@linux.intel.com
> + * http://www.intel.com
> + *
> + * BSD LICENSE
> + *
> + * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
> + * All rights reserved.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + *
> + * * Redistributions of source code must retain the above copyright
> + * notice, this list of conditions and the following disclaimer.
> + * * Redistributions in binary form must reproduce the above copyright
> + * notice, this list of conditions and the following disclaimer in
> + * the documentation and/or other materials provided with the
> + * distribution.
> + * * Neither the name Intel Corporation nor the names of its
> + * contributors may be used to endorse or promote products derived
> + * from this software without specific prior written permission.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
> CONTRIBUTORS
> + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
> NOT
> + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
> FITNESS
> +FOR
> + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
> COPYRIGHT
> + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
> +INCIDENTAL,
> + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
> NOT
> + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
> OF
> +USE,
> + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
> AND ON
> +ANY
> + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
> THE
> +USE
> + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
> DAMAGE.
> + *
> +
> +*********************************************************
> **************
> +******/
> +
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <fcntl.h>
> +#include <sys/ioctl.h>
> +#include <unistd.h>
> +#include <errno.h>
> +#include <stdint.h>
> +#include <stdbool.h>
> +#include <bits/wordsize.h>
> +#include <linux/mei.h>
> +
> +/*********************************************************
> *************
> +*******
> + * Intel Management Engine Interface
> +
> +*********************************************************
> **************
> +******/
> +
> +#define mei_msg(_me, fmt, ARGS...) do { \
> + if (_me->verbose) \
> + fprintf(stderr, fmt, ##ARGS); \
> +} while (0)
> +
> +#define mei_err(_me, fmt, ARGS...) do { \
> + fprintf(stderr, "Error: " fmt, ##ARGS); \ } while (0)
> +
> +struct mei {
> + uuid_le guid;
> + bool initialized;
> + bool verbose;
> + unsigned int buf_size;
> + unsigned char prot_ver;
> + int fd;
> +};
> +
> +static void mei_deinit(struct mei *cl)
> +{
> + if (cl->fd != -1)
> + close(cl->fd);
> + cl->fd = -1;
> + cl->buf_size = 0;
> + cl->prot_ver = 0;
> + cl->initialized = false;
> +}
> +
> +static bool mei_init(struct mei *me, const uuid_le *guid,
> + unsigned char req_protocol_version, bool verbose) {
> + int result;
> + struct mei_client *cl;
> + struct mei_connect_client_data data;
> +
> + me->verbose = verbose;
> +
> + me->fd = open("/dev/mei", O_RDWR);
> + if (me->fd == -1) {
> + mei_err(me, "Cannot establish a handle to the Intel MEI
> driver\n");
> + goto err;
> + }
> + memcpy(&me->guid, guid, sizeof(*guid));
> + memset(&data, 0, sizeof(data));
> + me->initialized = true;
> +
> + memcpy(&data.in_client_uuid, &me->guid, sizeof(me->guid));
> + result = ioctl(me->fd, IOCTL_MEI_CONNECT_CLIENT, &data);
> + if (result) {
> + mei_err(me, "IOCTL_MEI_CONNECT_CLIENT receive
> message. err=%d\n", result);
> + goto err;
> + }
> + cl = &data.out_client_properties;
> + mei_msg(me, "max_message_length %d\n", cl->max_msg_length);
> + mei_msg(me, "protocol_version %d\n", cl->protocol_version);
> +
> + if ((req_protocol_version > 0) &&
> + (cl->protocol_version != req_protocol_version)) {
> + mei_err(me, "Intel MEI protocol version not supported\n");
> + goto err;
> + }
> +
> + me->buf_size = cl->max_msg_length;
> + me->prot_ver = cl->protocol_version;
> +
> + return true;
> +err:
> + mei_deinit(me);
> + return false;
> +}
> +
> +static ssize_t mei_recv_msg(struct mei *me, unsigned char *buffer,
> + ssize_t len, unsigned long timeout)
> +{
> + ssize_t rc;
> +
> + mei_msg(me, "call read length = %zd\n", len);
> +
> + rc = read(me->fd, buffer, len);
> + if (rc < 0) {
> + mei_err(me, "read failed with status %zd %s\n",
> + rc, strerror(errno));
> + mei_deinit(me);
> + } else {
> + mei_msg(me, "read succeeded with result %zd\n", rc);
> + }
> + return rc;
> +}
> +
> +static ssize_t mei_send_msg(struct mei *me, const unsigned char *buffer,
> + ssize_t len, unsigned long timeout)
> +{
> + struct timeval tv;
> + ssize_t written;
> + ssize_t rc;
> + fd_set set;
> +
> + tv.tv_sec = timeout / 1000;
> + tv.tv_usec = (timeout % 1000) * 1000000;
> +
> + mei_msg(me, "call write length = %zd\n", len);
> +
> + written = write(me->fd, buffer, len);
> + if (written < 0) {
> + rc = -errno;
> + mei_err(me, "write failed with status %zd %s\n",
> + written, strerror(errno));
> + goto out;
> + }
> +
> + FD_ZERO(&set);
> + FD_SET(me->fd, &set);
> + rc = select(me->fd + 1 , &set, NULL, NULL, &tv);
> + if (rc > 0 && FD_ISSET(me->fd, &set)) {
> + mei_msg(me, "write success\n");
> + } else if (rc == 0) {
> + mei_err(me, "write failed on timeout with status\n");
> + goto out;
> + } else { /* rc < 0 */
> + mei_err(me, "write failed on select with status %zd\n", rc);
> + goto out;
> + }
> +
> + rc = written;
> +out:
> + if (rc < 0)
> + mei_deinit(me);
> +
> + return rc;
> +}
> +
> +/*********************************************************
> *************
> +*****
> + * Intel Advanced Management Technology ME Client
> +*********************************************************
> **************
> +****/
> +
> +#define AMT_MAJOR_VERSION 1
> +#define AMT_MINOR_VERSION 1
> +
> +#define AMT_STATUS_SUCCESS 0x0
> +#define AMT_STATUS_INTERNAL_ERROR 0x1
> +#define AMT_STATUS_NOT_READY 0x2
> +#define AMT_STATUS_INVALID_AMT_MODE 0x3
> +#define AMT_STATUS_INVALID_MESSAGE_LENGTH 0x4
> +
> +#define AMT_STATUS_HOST_IF_EMPTY_RESPONSE 0x4000
> +#define AMT_STATUS_SDK_RESOURCES 0x1004
> +
> +
> +#define AMT_BIOS_VERSION_LEN 65
> +#define AMT_VERSIONS_NUMBER 50
> +#define AMT_UNICODE_STRING_LEN 20
> +
> +struct amt_unicode_string {
> + uint16_t length;
> + char string[AMT_UNICODE_STRING_LEN];
> +} __attribute__((packed));
> +
> +struct amt_version_type {
> + struct amt_unicode_string description;
> + struct amt_unicode_string version;
> +} __attribute__((packed));
> +
> +struct amt_version {
> + uint8_t major;
> + uint8_t minor;
> +} __attribute__((packed));
> +
> +struct amt_code_versions {
> + uint8_t bios[AMT_BIOS_VERSION_LEN];
> + uint32_t count;
> + struct amt_version_type versions[AMT_VERSIONS_NUMBER]; }
> +__attribute__((packed));
> +
> +/*********************************************************
> *************
> +*****
> + * Intel Advanced Management Technology Host Interface
> +*********************************************************
> **************
> +****/
> +
> +struct amt_host_if_msg_header {
> + struct amt_version version;
> + uint16_t _reserved;
> + uint32_t command;
> + uint32_t length;
> +} __attribute__((packed));
> +
> +struct amt_host_if_resp_header {
> + struct amt_host_if_msg_header header;
> + uint32_t status;
> + unsigned char data[0];
> +} __attribute__((packed));
> +
> +const uuid_le MEI_IAMTHIF = UUID_LE(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
> +
> +const struct amt_host_if_msg_header CODE_VERSION_REQ = {
> + .version = {AMT_MAJOR_VERSION, AMT_MINOR_VERSION},
> + ._reserved = 0,
> + .command = AMT_HOST_IF_CODE_VERSIONS_REQUEST,
> + .length = 0
> +};
> +
> +
> +struct amt_host_if {
> + struct mei mei_cl;
> + unsigned long send_timeout;
> + bool initialized;
> +};
> +
> +
> +static bool amt_host_if_init(struct amt_host_if *acmd,
> + unsigned long send_timeout, bool verbose) {
> + acmd->send_timeout = (send_timeout) ? send_timeout : 20000;
> + acmd->initialized = mei_init(&acmd->mei_cl, &MEI_IAMTHIF, 0,
> verbose);
> + return acmd->initialized;
> +}
> +
> +static void amt_host_if_deinit(struct amt_host_if *acmd) {
> + mei_deinit(&acmd->mei_cl);
> + acmd->initialized = false;
> +}
> +
> +static uint32_t amt_verify_code_versions(const struct
> +amt_host_if_resp_header *resp) {
> + uint32_t status = AMT_STATUS_SUCCESS;
> + struct amt_code_versions *code_ver;
> + size_t code_ver_len;
> + uint32_t ver_type_cnt;
> + uint32_t len;
> + uint32_t i;
> +
> + code_ver = (struct amt_code_versions *)resp->data;
> + /* length - sizeof(status) */
> + code_ver_len = resp->header.length - sizeof(uint32_t);
> + ver_type_cnt = code_ver_len -
> + sizeof(code_ver->bios) -
> + sizeof(code_ver->count);
> + if (code_ver->count != ver_type_cnt / sizeof(struct
> amt_version_type)) {
> + status = AMT_STATUS_INTERNAL_ERROR;
> + goto out;
> + }
> +
> + for (i = 0; i < code_ver->count; i++) {
> + len = code_ver->versions[i].description.length;
> +
> + if (len > AMT_UNICODE_STRING_LEN) {
> + status = AMT_STATUS_INTERNAL_ERROR;
> + goto out;
> + }
> +
> + len = code_ver->versions[i].version.length;
> + if (code_ver->versions[i].version.string[len] != '\0' ||
> + len != strlen(code_ver->versions[i].version.string)) {
> + status = AMT_STATUS_INTERNAL_ERROR;
> + goto out;
> + }
> + }
> +out:
> + return status;
> +}
> +
> +static uint32_t amt_verify_response_header(uint32_t command,
> + const struct amt_host_if_msg_header
> *resp_hdr,
> + uint32_t response_size)
> +{
> + if (response_size < sizeof(struct amt_host_if_resp_header)) {
> + return AMT_STATUS_INTERNAL_ERROR;
> + } else if (response_size != (resp_hdr->length +
> + sizeof(struct amt_host_if_msg_header))) {
> + return AMT_STATUS_INTERNAL_ERROR;
> + } else if (resp_hdr->command != command) {
> + return AMT_STATUS_INTERNAL_ERROR;
> + } else if (resp_hdr->_reserved != 0) {
> + return AMT_STATUS_INTERNAL_ERROR;
> + } else if (resp_hdr->version.major != AMT_MAJOR_VERSION ||
> + resp_hdr->version.minor < AMT_MINOR_VERSION) {
> + return AMT_STATUS_INTERNAL_ERROR;
> + }
> + return AMT_STATUS_SUCCESS;
> +}
> +
> +static uint32_t amt_host_if_call(struct amt_host_if *acmd,
> + const unsigned char *command, ssize_t
> command_sz,
> + uint8_t **read_buf, uint32_t rcmd,
> + unsigned int expected_sz)
> +{
> + uint32_t in_buf_sz;
> + uint32_t out_buf_sz;
> + ssize_t written;
> + uint32_t status;
> + struct amt_host_if_resp_header *msg_hdr;
> +
> + in_buf_sz = acmd->mei_cl.buf_size;
> + *read_buf = (uint8_t *)malloc(sizeof(uint8_t) * in_buf_sz);
> + if (*read_buf == NULL)
> + return AMT_STATUS_SDK_RESOURCES;
> + memset(*read_buf, 0, in_buf_sz);
> + msg_hdr = (struct amt_host_if_resp_header *)*read_buf;
> +
> + written = mei_send_msg(&acmd->mei_cl,
> + command, command_sz, acmd-
> >send_timeout);
> + if (written != command_sz)
> + return AMT_STATUS_INTERNAL_ERROR;
> +
> + out_buf_sz = mei_recv_msg(&acmd->mei_cl, *read_buf, in_buf_sz,
> 2000);
> + if (out_buf_sz <= 0)
> + return AMT_STATUS_HOST_IF_EMPTY_RESPONSE;
> +
> + status = msg_hdr->status;
> + if (status != AMT_STATUS_SUCCESS)
> + return status;
> +
> + status = amt_verify_response_header(rcmd,
> + &msg_hdr->header, out_buf_sz);
> + if (status != AMT_STATUS_SUCCESS)
> + return status;
> +
> + if (expected_sz && expected_sz != out_buf_sz)
> + return AMT_STATUS_INTERNAL_ERROR;
> +
> + return AMT_STATUS_SUCCESS;
> +}
> +
> +
> +static uint32_t amt_get_code_versions(struct amt_host_if *cmd,
> + struct amt_code_versions *versions) {
> + struct amt_host_if_resp_header *response = NULL;
> + uint32_t status;
> +
> + status = amt_host_if_call(cmd,
> + (const unsigned char *)&CODE_VERSION_REQ,
> + sizeof(CODE_VERSION_REQ),
> + (uint8_t **)&response,
> + AMT_HOST_IF_CODE_VERSIONS_RESPONSE, 0);
> +
> + if (status != AMT_STATUS_SUCCESS)
> + goto out;
> +
> + status = amt_verify_code_versions(response);
> + if (status != AMT_STATUS_SUCCESS)
> + goto out;
> +
> + memcpy(versions, response->data, sizeof(struct
> amt_code_versions));
> +out:
> + if (response != NULL)
> + free(response);
> +
> + return status;
> +}
> +
> +/************************** end of amt_host_if_command
> +***********************/ int main(int argc, char **argv) {
> + struct amt_code_versions ver;
> + struct amt_host_if acmd;
> + unsigned int i;
> + uint32_t status;
> + int ret;
> + bool verbose;
> +
> + verbose = (argc > 1 && strcmp(argv[1], "-v") == 0);
> +
> + if (!amt_host_if_init(&acmd, 5000, verbose)) {
> + ret = 1;
> + goto out;
> + }
> +
> + status = amt_get_code_versions(&acmd, &ver);
> +
> + amt_host_if_deinit(&acmd);
> +
> + switch (status) {
> + case AMT_STATUS_HOST_IF_EMPTY_RESPONSE:
> + printf("Intel AMT: DISABLED\n");
> + ret = 0;
> + break;
> + case AMT_STATUS_SUCCESS:
> + printf("Intel AMT: ENABLED\n");
> + for (i = 0; i < ver.count; i++) {
> + printf("%s:\t%s\n", ver.versions[i].description.string,
> + ver.versions[i].version.string);
> + }
> + ret = 0;
> + break;
> + default:
> + printf("An error has occurred\n");
> + ret = 1;
> + break;
> + }
> +
> +out:
> + return ret;
> +}
> --
> 2.7.4
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v2 2/4] samples: move timers example code from Documentation
2016-09-21 19:47 [PATCH v2 0/4] Move runnable examples code from Documentation to samples Shuah Khan
2016-09-21 19:47 ` [PATCH v2 1/4] samples: move misc-devices/mei example code from Documentation Shuah Khan
@ 2016-09-21 19:47 ` Shuah Khan
2016-09-21 19:47 ` [PATCH v2 3/4] samples: move watchdog " Shuah Khan
` (2 subsequent siblings)
4 siblings, 0 replies; 8+ messages in thread
From: Shuah Khan @ 2016-09-21 19:47 UTC (permalink / raw)
To: corbet, tomas.winkler, tglx, clemens, wim, linux, davem, geert,
akpm, gregkh, kvalo, mchehab, ghackmann, ben, maheshkhanwalkar
Cc: Shuah Khan, linux-doc, linux-kernel, linux-watchdog
Move timers examples to samples and remove it from Documentation
Makefile. Create a new Makefile to build timers. It can be built
from top level directory or from timers directory:
Run make -C samples/timers or cd samples/timers; make
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
Documentation/Makefile | 2 +-
Documentation/timers/.gitignore | 1 -
Documentation/timers/Makefile | 5 -
Documentation/timers/hpet.txt | 2 +-
Documentation/timers/hpet_example.c | 294 ------------------------------------
samples/timers/.gitignore | 1 +
samples/timers/Makefile | 15 ++
samples/timers/hpet_example.c | 294 ++++++++++++++++++++++++++++++++++++
8 files changed, 312 insertions(+), 302 deletions(-)
delete mode 100644 Documentation/timers/.gitignore
delete mode 100644 Documentation/timers/Makefile
delete mode 100644 Documentation/timers/hpet_example.c
create mode 100644 samples/timers/.gitignore
create mode 100644 samples/timers/Makefile
create mode 100644 samples/timers/hpet_example.c
diff --git a/Documentation/Makefile b/Documentation/Makefile
index 3c2a207..fc386b7 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,2 +1,2 @@
subdir-y := accounting auxdisplay blackfin \
- laptops pcmcia timers watchdog
+ laptops pcmcia watchdog
diff --git a/Documentation/timers/.gitignore b/Documentation/timers/.gitignore
deleted file mode 100644
index c5c45d7..0000000
--- a/Documentation/timers/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-hpet_example
diff --git a/Documentation/timers/Makefile b/Documentation/timers/Makefile
deleted file mode 100644
index 6c09ee6..0000000
--- a/Documentation/timers/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-# List of programs to build
-hostprogs-$(CONFIG_X86) := hpet_example
-
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
diff --git a/Documentation/timers/hpet.txt b/Documentation/timers/hpet.txt
index a484d2c..895345e 100644
--- a/Documentation/timers/hpet.txt
+++ b/Documentation/timers/hpet.txt
@@ -25,4 +25,4 @@ arch/x86/kernel/hpet.c.
The driver provides a userspace API which resembles the API found in the
RTC driver framework. An example user space program is provided in
-file:Documentation/timers/hpet_example.c
+file:samples/timers/hpet_example.c
diff --git a/Documentation/timers/hpet_example.c b/Documentation/timers/hpet_example.c
deleted file mode 100644
index 3ab4993..0000000
--- a/Documentation/timers/hpet_example.c
+++ /dev/null
@@ -1,294 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <memory.h>
-#include <malloc.h>
-#include <time.h>
-#include <ctype.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <signal.h>
-#include <errno.h>
-#include <sys/time.h>
-#include <linux/hpet.h>
-
-
-extern void hpet_open_close(int, const char **);
-extern void hpet_info(int, const char **);
-extern void hpet_poll(int, const char **);
-extern void hpet_fasync(int, const char **);
-extern void hpet_read(int, const char **);
-
-#include <sys/poll.h>
-#include <sys/ioctl.h>
-
-struct hpet_command {
- char *command;
- void (*func)(int argc, const char ** argv);
-} hpet_command[] = {
- {
- "open-close",
- hpet_open_close
- },
- {
- "info",
- hpet_info
- },
- {
- "poll",
- hpet_poll
- },
- {
- "fasync",
- hpet_fasync
- },
-};
-
-int
-main(int argc, const char ** argv)
-{
- unsigned int i;
-
- argc--;
- argv++;
-
- if (!argc) {
- fprintf(stderr, "-hpet: requires command\n");
- return -1;
- }
-
-
- for (i = 0; i < (sizeof (hpet_command) / sizeof (hpet_command[0])); i++)
- if (!strcmp(argv[0], hpet_command[i].command)) {
- argc--;
- argv++;
- fprintf(stderr, "-hpet: executing %s\n",
- hpet_command[i].command);
- hpet_command[i].func(argc, argv);
- return 0;
- }
-
- fprintf(stderr, "do_hpet: command %s not implemented\n", argv[0]);
-
- return -1;
-}
-
-void
-hpet_open_close(int argc, const char **argv)
-{
- int fd;
-
- if (argc != 1) {
- fprintf(stderr, "hpet_open_close: device-name\n");
- return;
- }
-
- fd = open(argv[0], O_RDONLY);
- if (fd < 0)
- fprintf(stderr, "hpet_open_close: open failed\n");
- else
- close(fd);
-
- return;
-}
-
-void
-hpet_info(int argc, const char **argv)
-{
- struct hpet_info info;
- int fd;
-
- if (argc != 1) {
- fprintf(stderr, "hpet_info: device-name\n");
- return;
- }
-
- fd = open(argv[0], O_RDONLY);
- if (fd < 0) {
- fprintf(stderr, "hpet_info: open of %s failed\n", argv[0]);
- return;
- }
-
- if (ioctl(fd, HPET_INFO, &info) < 0) {
- fprintf(stderr, "hpet_info: failed to get info\n");
- goto out;
- }
-
- fprintf(stderr, "hpet_info: hi_irqfreq 0x%lx hi_flags 0x%lx ",
- info.hi_ireqfreq, info.hi_flags);
- fprintf(stderr, "hi_hpet %d hi_timer %d\n",
- info.hi_hpet, info.hi_timer);
-
-out:
- close(fd);
- return;
-}
-
-void
-hpet_poll(int argc, const char **argv)
-{
- unsigned long freq;
- int iterations, i, fd;
- struct pollfd pfd;
- struct hpet_info info;
- struct timeval stv, etv;
- struct timezone tz;
- long usec;
-
- if (argc != 3) {
- fprintf(stderr, "hpet_poll: device-name freq iterations\n");
- return;
- }
-
- freq = atoi(argv[1]);
- iterations = atoi(argv[2]);
-
- fd = open(argv[0], O_RDONLY);
-
- if (fd < 0) {
- fprintf(stderr, "hpet_poll: open of %s failed\n", argv[0]);
- return;
- }
-
- if (ioctl(fd, HPET_IRQFREQ, freq) < 0) {
- fprintf(stderr, "hpet_poll: HPET_IRQFREQ failed\n");
- goto out;
- }
-
- if (ioctl(fd, HPET_INFO, &info) < 0) {
- fprintf(stderr, "hpet_poll: failed to get info\n");
- goto out;
- }
-
- fprintf(stderr, "hpet_poll: info.hi_flags 0x%lx\n", info.hi_flags);
-
- if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) {
- fprintf(stderr, "hpet_poll: HPET_EPI failed\n");
- goto out;
- }
-
- if (ioctl(fd, HPET_IE_ON, 0) < 0) {
- fprintf(stderr, "hpet_poll, HPET_IE_ON failed\n");
- goto out;
- }
-
- pfd.fd = fd;
- pfd.events = POLLIN;
-
- for (i = 0; i < iterations; i++) {
- pfd.revents = 0;
- gettimeofday(&stv, &tz);
- if (poll(&pfd, 1, -1) < 0)
- fprintf(stderr, "hpet_poll: poll failed\n");
- else {
- long data;
-
- gettimeofday(&etv, &tz);
- usec = stv.tv_sec * 1000000 + stv.tv_usec;
- usec = (etv.tv_sec * 1000000 + etv.tv_usec) - usec;
-
- fprintf(stderr,
- "hpet_poll: expired time = 0x%lx\n", usec);
-
- fprintf(stderr, "hpet_poll: revents = 0x%x\n",
- pfd.revents);
-
- if (read(fd, &data, sizeof(data)) != sizeof(data)) {
- fprintf(stderr, "hpet_poll: read failed\n");
- }
- else
- fprintf(stderr, "hpet_poll: data 0x%lx\n",
- data);
- }
- }
-
-out:
- close(fd);
- return;
-}
-
-static int hpet_sigio_count;
-
-static void
-hpet_sigio(int val)
-{
- fprintf(stderr, "hpet_sigio: called\n");
- hpet_sigio_count++;
-}
-
-void
-hpet_fasync(int argc, const char **argv)
-{
- unsigned long freq;
- int iterations, i, fd, value;
- sig_t oldsig;
- struct hpet_info info;
-
- hpet_sigio_count = 0;
- fd = -1;
-
- if ((oldsig = signal(SIGIO, hpet_sigio)) == SIG_ERR) {
- fprintf(stderr, "hpet_fasync: failed to set signal handler\n");
- return;
- }
-
- if (argc != 3) {
- fprintf(stderr, "hpet_fasync: device-name freq iterations\n");
- goto out;
- }
-
- fd = open(argv[0], O_RDONLY);
-
- if (fd < 0) {
- fprintf(stderr, "hpet_fasync: failed to open %s\n", argv[0]);
- return;
- }
-
-
- if ((fcntl(fd, F_SETOWN, getpid()) == 1) ||
- ((value = fcntl(fd, F_GETFL)) == 1) ||
- (fcntl(fd, F_SETFL, value | O_ASYNC) == 1)) {
- fprintf(stderr, "hpet_fasync: fcntl failed\n");
- goto out;
- }
-
- freq = atoi(argv[1]);
- iterations = atoi(argv[2]);
-
- if (ioctl(fd, HPET_IRQFREQ, freq) < 0) {
- fprintf(stderr, "hpet_fasync: HPET_IRQFREQ failed\n");
- goto out;
- }
-
- if (ioctl(fd, HPET_INFO, &info) < 0) {
- fprintf(stderr, "hpet_fasync: failed to get info\n");
- goto out;
- }
-
- fprintf(stderr, "hpet_fasync: info.hi_flags 0x%lx\n", info.hi_flags);
-
- if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) {
- fprintf(stderr, "hpet_fasync: HPET_EPI failed\n");
- goto out;
- }
-
- if (ioctl(fd, HPET_IE_ON, 0) < 0) {
- fprintf(stderr, "hpet_fasync, HPET_IE_ON failed\n");
- goto out;
- }
-
- for (i = 0; i < iterations; i++) {
- (void) pause();
- fprintf(stderr, "hpet_fasync: count = %d\n", hpet_sigio_count);
- }
-
-out:
- signal(SIGIO, oldsig);
-
- if (fd >= 0)
- close(fd);
-
- return;
-}
diff --git a/samples/timers/.gitignore b/samples/timers/.gitignore
new file mode 100644
index 0000000..c5c45d7
--- /dev/null
+++ b/samples/timers/.gitignore
@@ -0,0 +1 @@
+hpet_example
diff --git a/samples/timers/Makefile b/samples/timers/Makefile
new file mode 100644
index 0000000..a5c3c4a
--- /dev/null
+++ b/samples/timers/Makefile
@@ -0,0 +1,15 @@
+ifndef CROSS_COMPILE
+uname_M := $(shell uname -m 2>/dev/null || echo not)
+ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/)
+
+ifeq ($(ARCH),x86)
+CC := $(CROSS_COMPILE)gcc
+PROGS := hpet_example
+
+all: $(PROGS)
+
+clean:
+ rm -fr $(PROGS)
+
+endif
+endif
diff --git a/samples/timers/hpet_example.c b/samples/timers/hpet_example.c
new file mode 100644
index 0000000..3ab4993
--- /dev/null
+++ b/samples/timers/hpet_example.c
@@ -0,0 +1,294 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <memory.h>
+#include <malloc.h>
+#include <time.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <linux/hpet.h>
+
+
+extern void hpet_open_close(int, const char **);
+extern void hpet_info(int, const char **);
+extern void hpet_poll(int, const char **);
+extern void hpet_fasync(int, const char **);
+extern void hpet_read(int, const char **);
+
+#include <sys/poll.h>
+#include <sys/ioctl.h>
+
+struct hpet_command {
+ char *command;
+ void (*func)(int argc, const char ** argv);
+} hpet_command[] = {
+ {
+ "open-close",
+ hpet_open_close
+ },
+ {
+ "info",
+ hpet_info
+ },
+ {
+ "poll",
+ hpet_poll
+ },
+ {
+ "fasync",
+ hpet_fasync
+ },
+};
+
+int
+main(int argc, const char ** argv)
+{
+ unsigned int i;
+
+ argc--;
+ argv++;
+
+ if (!argc) {
+ fprintf(stderr, "-hpet: requires command\n");
+ return -1;
+ }
+
+
+ for (i = 0; i < (sizeof (hpet_command) / sizeof (hpet_command[0])); i++)
+ if (!strcmp(argv[0], hpet_command[i].command)) {
+ argc--;
+ argv++;
+ fprintf(stderr, "-hpet: executing %s\n",
+ hpet_command[i].command);
+ hpet_command[i].func(argc, argv);
+ return 0;
+ }
+
+ fprintf(stderr, "do_hpet: command %s not implemented\n", argv[0]);
+
+ return -1;
+}
+
+void
+hpet_open_close(int argc, const char **argv)
+{
+ int fd;
+
+ if (argc != 1) {
+ fprintf(stderr, "hpet_open_close: device-name\n");
+ return;
+ }
+
+ fd = open(argv[0], O_RDONLY);
+ if (fd < 0)
+ fprintf(stderr, "hpet_open_close: open failed\n");
+ else
+ close(fd);
+
+ return;
+}
+
+void
+hpet_info(int argc, const char **argv)
+{
+ struct hpet_info info;
+ int fd;
+
+ if (argc != 1) {
+ fprintf(stderr, "hpet_info: device-name\n");
+ return;
+ }
+
+ fd = open(argv[0], O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "hpet_info: open of %s failed\n", argv[0]);
+ return;
+ }
+
+ if (ioctl(fd, HPET_INFO, &info) < 0) {
+ fprintf(stderr, "hpet_info: failed to get info\n");
+ goto out;
+ }
+
+ fprintf(stderr, "hpet_info: hi_irqfreq 0x%lx hi_flags 0x%lx ",
+ info.hi_ireqfreq, info.hi_flags);
+ fprintf(stderr, "hi_hpet %d hi_timer %d\n",
+ info.hi_hpet, info.hi_timer);
+
+out:
+ close(fd);
+ return;
+}
+
+void
+hpet_poll(int argc, const char **argv)
+{
+ unsigned long freq;
+ int iterations, i, fd;
+ struct pollfd pfd;
+ struct hpet_info info;
+ struct timeval stv, etv;
+ struct timezone tz;
+ long usec;
+
+ if (argc != 3) {
+ fprintf(stderr, "hpet_poll: device-name freq iterations\n");
+ return;
+ }
+
+ freq = atoi(argv[1]);
+ iterations = atoi(argv[2]);
+
+ fd = open(argv[0], O_RDONLY);
+
+ if (fd < 0) {
+ fprintf(stderr, "hpet_poll: open of %s failed\n", argv[0]);
+ return;
+ }
+
+ if (ioctl(fd, HPET_IRQFREQ, freq) < 0) {
+ fprintf(stderr, "hpet_poll: HPET_IRQFREQ failed\n");
+ goto out;
+ }
+
+ if (ioctl(fd, HPET_INFO, &info) < 0) {
+ fprintf(stderr, "hpet_poll: failed to get info\n");
+ goto out;
+ }
+
+ fprintf(stderr, "hpet_poll: info.hi_flags 0x%lx\n", info.hi_flags);
+
+ if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) {
+ fprintf(stderr, "hpet_poll: HPET_EPI failed\n");
+ goto out;
+ }
+
+ if (ioctl(fd, HPET_IE_ON, 0) < 0) {
+ fprintf(stderr, "hpet_poll, HPET_IE_ON failed\n");
+ goto out;
+ }
+
+ pfd.fd = fd;
+ pfd.events = POLLIN;
+
+ for (i = 0; i < iterations; i++) {
+ pfd.revents = 0;
+ gettimeofday(&stv, &tz);
+ if (poll(&pfd, 1, -1) < 0)
+ fprintf(stderr, "hpet_poll: poll failed\n");
+ else {
+ long data;
+
+ gettimeofday(&etv, &tz);
+ usec = stv.tv_sec * 1000000 + stv.tv_usec;
+ usec = (etv.tv_sec * 1000000 + etv.tv_usec) - usec;
+
+ fprintf(stderr,
+ "hpet_poll: expired time = 0x%lx\n", usec);
+
+ fprintf(stderr, "hpet_poll: revents = 0x%x\n",
+ pfd.revents);
+
+ if (read(fd, &data, sizeof(data)) != sizeof(data)) {
+ fprintf(stderr, "hpet_poll: read failed\n");
+ }
+ else
+ fprintf(stderr, "hpet_poll: data 0x%lx\n",
+ data);
+ }
+ }
+
+out:
+ close(fd);
+ return;
+}
+
+static int hpet_sigio_count;
+
+static void
+hpet_sigio(int val)
+{
+ fprintf(stderr, "hpet_sigio: called\n");
+ hpet_sigio_count++;
+}
+
+void
+hpet_fasync(int argc, const char **argv)
+{
+ unsigned long freq;
+ int iterations, i, fd, value;
+ sig_t oldsig;
+ struct hpet_info info;
+
+ hpet_sigio_count = 0;
+ fd = -1;
+
+ if ((oldsig = signal(SIGIO, hpet_sigio)) == SIG_ERR) {
+ fprintf(stderr, "hpet_fasync: failed to set signal handler\n");
+ return;
+ }
+
+ if (argc != 3) {
+ fprintf(stderr, "hpet_fasync: device-name freq iterations\n");
+ goto out;
+ }
+
+ fd = open(argv[0], O_RDONLY);
+
+ if (fd < 0) {
+ fprintf(stderr, "hpet_fasync: failed to open %s\n", argv[0]);
+ return;
+ }
+
+
+ if ((fcntl(fd, F_SETOWN, getpid()) == 1) ||
+ ((value = fcntl(fd, F_GETFL)) == 1) ||
+ (fcntl(fd, F_SETFL, value | O_ASYNC) == 1)) {
+ fprintf(stderr, "hpet_fasync: fcntl failed\n");
+ goto out;
+ }
+
+ freq = atoi(argv[1]);
+ iterations = atoi(argv[2]);
+
+ if (ioctl(fd, HPET_IRQFREQ, freq) < 0) {
+ fprintf(stderr, "hpet_fasync: HPET_IRQFREQ failed\n");
+ goto out;
+ }
+
+ if (ioctl(fd, HPET_INFO, &info) < 0) {
+ fprintf(stderr, "hpet_fasync: failed to get info\n");
+ goto out;
+ }
+
+ fprintf(stderr, "hpet_fasync: info.hi_flags 0x%lx\n", info.hi_flags);
+
+ if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) {
+ fprintf(stderr, "hpet_fasync: HPET_EPI failed\n");
+ goto out;
+ }
+
+ if (ioctl(fd, HPET_IE_ON, 0) < 0) {
+ fprintf(stderr, "hpet_fasync, HPET_IE_ON failed\n");
+ goto out;
+ }
+
+ for (i = 0; i < iterations; i++) {
+ (void) pause();
+ fprintf(stderr, "hpet_fasync: count = %d\n", hpet_sigio_count);
+ }
+
+out:
+ signal(SIGIO, oldsig);
+
+ if (fd >= 0)
+ close(fd);
+
+ return;
+}
--
2.7.4
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH v2 3/4] samples: move watchdog example code from Documentation
2016-09-21 19:47 [PATCH v2 0/4] Move runnable examples code from Documentation to samples Shuah Khan
2016-09-21 19:47 ` [PATCH v2 1/4] samples: move misc-devices/mei example code from Documentation Shuah Khan
2016-09-21 19:47 ` [PATCH v2 2/4] samples: move timers " Shuah Khan
@ 2016-09-21 19:47 ` Shuah Khan
2016-09-21 19:47 ` [PATCH v2 4/4] samples: move auxdisplay " Shuah Khan
2016-09-21 20:18 ` [PATCH v2 0/4] Move runnable examples code from Documentation to samples Jonathan Corbet
4 siblings, 0 replies; 8+ messages in thread
From: Shuah Khan @ 2016-09-21 19:47 UTC (permalink / raw)
To: corbet, tomas.winkler, tglx, clemens, wim, linux, davem, geert,
akpm, gregkh, kvalo, mchehab, ghackmann, ben, maheshkhanwalkar
Cc: Shuah Khan, linux-doc, linux-kernel, linux-watchdog
Move watchdog examples to samples and remove it from Documentation
Makefile. Create a new Makefile to build watchdog. It can be built
from top level directory or from watchdog directory:
Run make -C samples/watchdog or cd samples/watchdog; make
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
Documentation/Makefile | 2 +-
Documentation/watchdog/Makefile | 1 -
Documentation/watchdog/src/.gitignore | 1 -
Documentation/watchdog/src/Makefile | 5 -----
Documentation/watchdog/src/watchdog-simple.c | 24 ------------------------
Documentation/watchdog/watchdog-api.txt | 2 +-
Documentation/watchdog/wdt.txt | 2 +-
samples/watchdog/.gitignore | 1 +
samples/watchdog/Makefile | 8 ++++++++
samples/watchdog/watchdog-simple.c | 24 ++++++++++++++++++++++++
10 files changed, 36 insertions(+), 34 deletions(-)
delete mode 100644 Documentation/watchdog/Makefile
delete mode 100644 Documentation/watchdog/src/.gitignore
delete mode 100644 Documentation/watchdog/src/Makefile
delete mode 100644 Documentation/watchdog/src/watchdog-simple.c
create mode 100644 samples/watchdog/.gitignore
create mode 100644 samples/watchdog/Makefile
create mode 100644 samples/watchdog/watchdog-simple.c
diff --git a/Documentation/Makefile b/Documentation/Makefile
index fc386b7..b2210b7 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,2 +1,2 @@
subdir-y := accounting auxdisplay blackfin \
- laptops pcmcia watchdog
+ laptops pcmcia
diff --git a/Documentation/watchdog/Makefile b/Documentation/watchdog/Makefile
deleted file mode 100644
index 6018f45..0000000
--- a/Documentation/watchdog/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-subdir-y := src
diff --git a/Documentation/watchdog/src/.gitignore b/Documentation/watchdog/src/.gitignore
deleted file mode 100644
index ff0ebb5..0000000
--- a/Documentation/watchdog/src/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-watchdog-simple
diff --git a/Documentation/watchdog/src/Makefile b/Documentation/watchdog/src/Makefile
deleted file mode 100644
index 47be791..0000000
--- a/Documentation/watchdog/src/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-# List of programs to build
-hostprogs-y := watchdog-simple
-
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
diff --git a/Documentation/watchdog/src/watchdog-simple.c b/Documentation/watchdog/src/watchdog-simple.c
deleted file mode 100644
index ba45803..0000000
--- a/Documentation/watchdog/src/watchdog-simple.c
+++ /dev/null
@@ -1,24 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-
-int main(void)
-{
- int fd = open("/dev/watchdog", O_WRONLY);
- int ret = 0;
- if (fd == -1) {
- perror("watchdog");
- exit(EXIT_FAILURE);
- }
- while (1) {
- ret = write(fd, "\0", 1);
- if (ret != 1) {
- ret = -1;
- break;
- }
- sleep(10);
- }
- close(fd);
- return ret;
-}
diff --git a/Documentation/watchdog/watchdog-api.txt b/Documentation/watchdog/watchdog-api.txt
index b3a701f..0e62ba3 100644
--- a/Documentation/watchdog/watchdog-api.txt
+++ b/Documentation/watchdog/watchdog-api.txt
@@ -37,7 +37,7 @@ activates as soon as /dev/watchdog is opened and will reboot unless
the watchdog is pinged within a certain time, this time is called the
timeout or margin. The simplest way to ping the watchdog is to write
some data to the device. So a very simple watchdog daemon would look
-like this source file: see Documentation/watchdog/src/watchdog-simple.c
+like this source file: see samples/watchdog/watchdog-simple.c
A more advanced driver could for example check that a HTTP server is
still responding before doing the write call to ping the watchdog.
diff --git a/Documentation/watchdog/wdt.txt b/Documentation/watchdog/wdt.txt
index 061c2e3..ed2f0b8 100644
--- a/Documentation/watchdog/wdt.txt
+++ b/Documentation/watchdog/wdt.txt
@@ -47,4 +47,4 @@ The external event interfaces on the WDT boards are not currently supported.
Minor numbers are however allocated for it.
-Example Watchdog Driver: see Documentation/watchdog/src/watchdog-simple.c
+Example Watchdog Driver: see samples/watchdog/watchdog-simple.c
diff --git a/samples/watchdog/.gitignore b/samples/watchdog/.gitignore
new file mode 100644
index 0000000..ff0ebb5
--- /dev/null
+++ b/samples/watchdog/.gitignore
@@ -0,0 +1 @@
+watchdog-simple
diff --git a/samples/watchdog/Makefile b/samples/watchdog/Makefile
new file mode 100644
index 0000000..9b53d89
--- /dev/null
+++ b/samples/watchdog/Makefile
@@ -0,0 +1,8 @@
+CC := $(CROSS_COMPILE)gcc
+PROGS := watchdog-simple
+
+all: $(PROGS)
+
+clean:
+ rm -fr $(PROGS)
+
diff --git a/samples/watchdog/watchdog-simple.c b/samples/watchdog/watchdog-simple.c
new file mode 100644
index 0000000..ba45803
--- /dev/null
+++ b/samples/watchdog/watchdog-simple.c
@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int main(void)
+{
+ int fd = open("/dev/watchdog", O_WRONLY);
+ int ret = 0;
+ if (fd == -1) {
+ perror("watchdog");
+ exit(EXIT_FAILURE);
+ }
+ while (1) {
+ ret = write(fd, "\0", 1);
+ if (ret != 1) {
+ ret = -1;
+ break;
+ }
+ sleep(10);
+ }
+ close(fd);
+ return ret;
+}
--
2.7.4
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH v2 4/4] samples: move auxdisplay example code from Documentation
2016-09-21 19:47 [PATCH v2 0/4] Move runnable examples code from Documentation to samples Shuah Khan
` (2 preceding siblings ...)
2016-09-21 19:47 ` [PATCH v2 3/4] samples: move watchdog " Shuah Khan
@ 2016-09-21 19:47 ` Shuah Khan
2016-09-21 20:18 ` [PATCH v2 0/4] Move runnable examples code from Documentation to samples Jonathan Corbet
4 siblings, 0 replies; 8+ messages in thread
From: Shuah Khan @ 2016-09-21 19:47 UTC (permalink / raw)
To: corbet, tomas.winkler, tglx, clemens, wim, linux, davem, geert,
akpm, gregkh, kvalo, mchehab, ghackmann, ben, maheshkhanwalkar
Cc: Shuah Khan, linux-doc, linux-kernel, linux-watchdog
Move auxdisplay examples to samples and remove it from Documentation
Makefile. Create a new Makefile to build auxdisplay. It can be built
from top level directory or from auxdisplay directory:
Run make -C samples/auxdisplay or cd samples/auxdisplay; make
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
Documentation/Makefile | 2 +-
Documentation/auxdisplay/.gitignore | 1 -
Documentation/auxdisplay/Makefile | 7 -
Documentation/auxdisplay/cfag12864b | 2 +-
Documentation/auxdisplay/cfag12864b-example.c | 281 --------------------------
samples/auxdisplay/.gitignore | 1 +
samples/auxdisplay/Makefile | 9 +
samples/auxdisplay/cfag12864b-example.c | 281 ++++++++++++++++++++++++++
8 files changed, 293 insertions(+), 291 deletions(-)
delete mode 100644 Documentation/auxdisplay/.gitignore
delete mode 100644 Documentation/auxdisplay/Makefile
delete mode 100644 Documentation/auxdisplay/cfag12864b-example.c
create mode 100644 samples/auxdisplay/.gitignore
create mode 100644 samples/auxdisplay/Makefile
create mode 100644 samples/auxdisplay/cfag12864b-example.c
diff --git a/Documentation/Makefile b/Documentation/Makefile
index b2210b7..0b8cd50 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,2 +1,2 @@
-subdir-y := accounting auxdisplay blackfin \
+subdir-y := accounting blackfin \
laptops pcmcia
diff --git a/Documentation/auxdisplay/.gitignore b/Documentation/auxdisplay/.gitignore
deleted file mode 100644
index 7af2228..0000000
--- a/Documentation/auxdisplay/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-cfag12864b-example
diff --git a/Documentation/auxdisplay/Makefile b/Documentation/auxdisplay/Makefile
deleted file mode 100644
index ada4dac..0000000
--- a/Documentation/auxdisplay/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-# List of programs to build
-hostprogs-y := cfag12864b-example
-
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
-
-HOSTCFLAGS_cfag12864b-example.o += -I$(objtree)/usr/include
diff --git a/Documentation/auxdisplay/cfag12864b b/Documentation/auxdisplay/cfag12864b
index eb7be39..12fd51b 100644
--- a/Documentation/auxdisplay/cfag12864b
+++ b/Documentation/auxdisplay/cfag12864b
@@ -101,5 +101,5 @@ Although the LCD won't get updated until the next refresh time arrives.
Also, you can mmap the framebuffer: open & mmap, munmap & close...
which is the best option for most uses.
-Check Documentation/auxdisplay/cfag12864b-example.c
+Check samples/auxdisplay/cfag12864b-example.c
for a real working userspace complete program with usage examples.
diff --git a/Documentation/auxdisplay/cfag12864b-example.c b/Documentation/auxdisplay/cfag12864b-example.c
deleted file mode 100644
index e7823ff..0000000
--- a/Documentation/auxdisplay/cfag12864b-example.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
- * Filename: cfag12864b-example.c
- * Version: 0.1.0
- * Description: cfag12864b LCD userspace example program
- * License: GPLv2
- *
- * Author: Copyright (C) Miguel Ojeda Sandonis
- * Date: 2006-10-31
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-/*
- * ------------------------
- * start of cfag12864b code
- * ------------------------
- */
-
-#include <string.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-
-#define CFAG12864B_WIDTH (128)
-#define CFAG12864B_HEIGHT (64)
-#define CFAG12864B_SIZE (128 * 64 / 8)
-#define CFAG12864B_BPB (8)
-#define CFAG12864B_ADDRESS(x, y) ((y) * CFAG12864B_WIDTH / \
- CFAG12864B_BPB + (x) / CFAG12864B_BPB)
-#define CFAG12864B_BIT(n) (((unsigned char) 1) << (n))
-
-#undef CFAG12864B_DOCHECK
-#ifdef CFAG12864B_DOCHECK
- #define CFAG12864B_CHECK(x, y) ((x) < CFAG12864B_WIDTH && \
- (y) < CFAG12864B_HEIGHT)
-#else
- #define CFAG12864B_CHECK(x, y) (1)
-#endif
-
-int cfag12864b_fd;
-unsigned char * cfag12864b_mem;
-unsigned char cfag12864b_buffer[CFAG12864B_SIZE];
-
-/*
- * init a cfag12864b framebuffer device
- *
- * No error: return = 0
- * Unable to open: return = -1
- * Unable to mmap: return = -2
- */
-static int cfag12864b_init(char *path)
-{
- cfag12864b_fd = open(path, O_RDWR);
- if (cfag12864b_fd == -1)
- return -1;
-
- cfag12864b_mem = mmap(0, CFAG12864B_SIZE, PROT_READ | PROT_WRITE,
- MAP_SHARED, cfag12864b_fd, 0);
- if (cfag12864b_mem == MAP_FAILED) {
- close(cfag12864b_fd);
- return -2;
- }
-
- return 0;
-}
-
-/*
- * exit a cfag12864b framebuffer device
- */
-static void cfag12864b_exit(void)
-{
- munmap(cfag12864b_mem, CFAG12864B_SIZE);
- close(cfag12864b_fd);
-}
-
-/*
- * set (x, y) pixel
- */
-static void cfag12864b_set(unsigned char x, unsigned char y)
-{
- if (CFAG12864B_CHECK(x, y))
- cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] |=
- CFAG12864B_BIT(x % CFAG12864B_BPB);
-}
-
-/*
- * unset (x, y) pixel
- */
-static void cfag12864b_unset(unsigned char x, unsigned char y)
-{
- if (CFAG12864B_CHECK(x, y))
- cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] &=
- ~CFAG12864B_BIT(x % CFAG12864B_BPB);
-}
-
-/*
- * is set (x, y) pixel?
- *
- * Pixel off: return = 0
- * Pixel on: return = 1
- */
-static unsigned char cfag12864b_isset(unsigned char x, unsigned char y)
-{
- if (CFAG12864B_CHECK(x, y))
- if (cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] &
- CFAG12864B_BIT(x % CFAG12864B_BPB))
- return 1;
-
- return 0;
-}
-
-/*
- * not (x, y) pixel
- */
-static void cfag12864b_not(unsigned char x, unsigned char y)
-{
- if (cfag12864b_isset(x, y))
- cfag12864b_unset(x, y);
- else
- cfag12864b_set(x, y);
-}
-
-/*
- * fill (set all pixels)
- */
-static void cfag12864b_fill(void)
-{
- unsigned short i;
-
- for (i = 0; i < CFAG12864B_SIZE; i++)
- cfag12864b_buffer[i] = 0xFF;
-}
-
-/*
- * clear (unset all pixels)
- */
-static void cfag12864b_clear(void)
-{
- unsigned short i;
-
- for (i = 0; i < CFAG12864B_SIZE; i++)
- cfag12864b_buffer[i] = 0;
-}
-
-/*
- * format a [128*64] matrix
- *
- * Pixel off: src[i] = 0
- * Pixel on: src[i] > 0
- */
-static void cfag12864b_format(unsigned char * matrix)
-{
- unsigned char i, j, n;
-
- for (i = 0; i < CFAG12864B_HEIGHT; i++)
- for (j = 0; j < CFAG12864B_WIDTH / CFAG12864B_BPB; j++) {
- cfag12864b_buffer[i * CFAG12864B_WIDTH / CFAG12864B_BPB +
- j] = 0;
- for (n = 0; n < CFAG12864B_BPB; n++)
- if (matrix[i * CFAG12864B_WIDTH +
- j * CFAG12864B_BPB + n])
- cfag12864b_buffer[i * CFAG12864B_WIDTH /
- CFAG12864B_BPB + j] |=
- CFAG12864B_BIT(n);
- }
-}
-
-/*
- * blit buffer to lcd
- */
-static void cfag12864b_blit(void)
-{
- memcpy(cfag12864b_mem, cfag12864b_buffer, CFAG12864B_SIZE);
-}
-
-/*
- * ----------------------
- * end of cfag12864b code
- * ----------------------
- */
-
-#include <stdio.h>
-
-#define EXAMPLES 6
-
-static void example(unsigned char n)
-{
- unsigned short i, j;
- unsigned char matrix[CFAG12864B_WIDTH * CFAG12864B_HEIGHT];
-
- if (n > EXAMPLES)
- return;
-
- printf("Example %i/%i - ", n, EXAMPLES);
-
- switch (n) {
- case 1:
- printf("Draw points setting bits");
- cfag12864b_clear();
- for (i = 0; i < CFAG12864B_WIDTH; i += 2)
- for (j = 0; j < CFAG12864B_HEIGHT; j += 2)
- cfag12864b_set(i, j);
- break;
-
- case 2:
- printf("Clear the LCD");
- cfag12864b_clear();
- break;
-
- case 3:
- printf("Draw rows formatting a [128*64] matrix");
- memset(matrix, 0, CFAG12864B_WIDTH * CFAG12864B_HEIGHT);
- for (i = 0; i < CFAG12864B_WIDTH; i++)
- for (j = 0; j < CFAG12864B_HEIGHT; j += 2)
- matrix[j * CFAG12864B_WIDTH + i] = 1;
- cfag12864b_format(matrix);
- break;
-
- case 4:
- printf("Fill the lcd");
- cfag12864b_fill();
- break;
-
- case 5:
- printf("Draw columns unsetting bits");
- for (i = 0; i < CFAG12864B_WIDTH; i += 2)
- for (j = 0; j < CFAG12864B_HEIGHT; j++)
- cfag12864b_unset(i, j);
- break;
-
- case 6:
- printf("Do negative not-ing all bits");
- for (i = 0; i < CFAG12864B_WIDTH; i++)
- for (j = 0; j < CFAG12864B_HEIGHT; j ++)
- cfag12864b_not(i, j);
- break;
- }
-
- puts(" - [Press Enter]");
-}
-
-int main(int argc, char *argv[])
-{
- unsigned char n;
-
- if (argc != 2) {
- printf(
- "Sintax: %s fbdev\n"
- "Usually: /dev/fb0, /dev/fb1...\n", argv[0]);
- return -1;
- }
-
- if (cfag12864b_init(argv[1])) {
- printf("Can't init %s fbdev\n", argv[1]);
- return -2;
- }
-
- for (n = 1; n <= EXAMPLES; n++) {
- example(n);
- cfag12864b_blit();
- while (getchar() != '\n');
- }
-
- cfag12864b_exit();
-
- return 0;
-}
diff --git a/samples/auxdisplay/.gitignore b/samples/auxdisplay/.gitignore
new file mode 100644
index 0000000..7af2228
--- /dev/null
+++ b/samples/auxdisplay/.gitignore
@@ -0,0 +1 @@
+cfag12864b-example
diff --git a/samples/auxdisplay/Makefile b/samples/auxdisplay/Makefile
new file mode 100644
index 0000000..05e471f
--- /dev/null
+++ b/samples/auxdisplay/Makefile
@@ -0,0 +1,9 @@
+CC := $(CROSS_COMPILE)gcc
+CFLAGS := -I../../usr/include
+
+PROGS := cfag12864b-example
+
+all: $(PROGS)
+
+clean:
+ rm -fr $(PROGS)
diff --git a/samples/auxdisplay/cfag12864b-example.c b/samples/auxdisplay/cfag12864b-example.c
new file mode 100644
index 0000000..e7823ff
--- /dev/null
+++ b/samples/auxdisplay/cfag12864b-example.c
@@ -0,0 +1,281 @@
+/*
+ * Filename: cfag12864b-example.c
+ * Version: 0.1.0
+ * Description: cfag12864b LCD userspace example program
+ * License: GPLv2
+ *
+ * Author: Copyright (C) Miguel Ojeda Sandonis
+ * Date: 2006-10-31
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+/*
+ * ------------------------
+ * start of cfag12864b code
+ * ------------------------
+ */
+
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#define CFAG12864B_WIDTH (128)
+#define CFAG12864B_HEIGHT (64)
+#define CFAG12864B_SIZE (128 * 64 / 8)
+#define CFAG12864B_BPB (8)
+#define CFAG12864B_ADDRESS(x, y) ((y) * CFAG12864B_WIDTH / \
+ CFAG12864B_BPB + (x) / CFAG12864B_BPB)
+#define CFAG12864B_BIT(n) (((unsigned char) 1) << (n))
+
+#undef CFAG12864B_DOCHECK
+#ifdef CFAG12864B_DOCHECK
+ #define CFAG12864B_CHECK(x, y) ((x) < CFAG12864B_WIDTH && \
+ (y) < CFAG12864B_HEIGHT)
+#else
+ #define CFAG12864B_CHECK(x, y) (1)
+#endif
+
+int cfag12864b_fd;
+unsigned char * cfag12864b_mem;
+unsigned char cfag12864b_buffer[CFAG12864B_SIZE];
+
+/*
+ * init a cfag12864b framebuffer device
+ *
+ * No error: return = 0
+ * Unable to open: return = -1
+ * Unable to mmap: return = -2
+ */
+static int cfag12864b_init(char *path)
+{
+ cfag12864b_fd = open(path, O_RDWR);
+ if (cfag12864b_fd == -1)
+ return -1;
+
+ cfag12864b_mem = mmap(0, CFAG12864B_SIZE, PROT_READ | PROT_WRITE,
+ MAP_SHARED, cfag12864b_fd, 0);
+ if (cfag12864b_mem == MAP_FAILED) {
+ close(cfag12864b_fd);
+ return -2;
+ }
+
+ return 0;
+}
+
+/*
+ * exit a cfag12864b framebuffer device
+ */
+static void cfag12864b_exit(void)
+{
+ munmap(cfag12864b_mem, CFAG12864B_SIZE);
+ close(cfag12864b_fd);
+}
+
+/*
+ * set (x, y) pixel
+ */
+static void cfag12864b_set(unsigned char x, unsigned char y)
+{
+ if (CFAG12864B_CHECK(x, y))
+ cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] |=
+ CFAG12864B_BIT(x % CFAG12864B_BPB);
+}
+
+/*
+ * unset (x, y) pixel
+ */
+static void cfag12864b_unset(unsigned char x, unsigned char y)
+{
+ if (CFAG12864B_CHECK(x, y))
+ cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] &=
+ ~CFAG12864B_BIT(x % CFAG12864B_BPB);
+}
+
+/*
+ * is set (x, y) pixel?
+ *
+ * Pixel off: return = 0
+ * Pixel on: return = 1
+ */
+static unsigned char cfag12864b_isset(unsigned char x, unsigned char y)
+{
+ if (CFAG12864B_CHECK(x, y))
+ if (cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] &
+ CFAG12864B_BIT(x % CFAG12864B_BPB))
+ return 1;
+
+ return 0;
+}
+
+/*
+ * not (x, y) pixel
+ */
+static void cfag12864b_not(unsigned char x, unsigned char y)
+{
+ if (cfag12864b_isset(x, y))
+ cfag12864b_unset(x, y);
+ else
+ cfag12864b_set(x, y);
+}
+
+/*
+ * fill (set all pixels)
+ */
+static void cfag12864b_fill(void)
+{
+ unsigned short i;
+
+ for (i = 0; i < CFAG12864B_SIZE; i++)
+ cfag12864b_buffer[i] = 0xFF;
+}
+
+/*
+ * clear (unset all pixels)
+ */
+static void cfag12864b_clear(void)
+{
+ unsigned short i;
+
+ for (i = 0; i < CFAG12864B_SIZE; i++)
+ cfag12864b_buffer[i] = 0;
+}
+
+/*
+ * format a [128*64] matrix
+ *
+ * Pixel off: src[i] = 0
+ * Pixel on: src[i] > 0
+ */
+static void cfag12864b_format(unsigned char * matrix)
+{
+ unsigned char i, j, n;
+
+ for (i = 0; i < CFAG12864B_HEIGHT; i++)
+ for (j = 0; j < CFAG12864B_WIDTH / CFAG12864B_BPB; j++) {
+ cfag12864b_buffer[i * CFAG12864B_WIDTH / CFAG12864B_BPB +
+ j] = 0;
+ for (n = 0; n < CFAG12864B_BPB; n++)
+ if (matrix[i * CFAG12864B_WIDTH +
+ j * CFAG12864B_BPB + n])
+ cfag12864b_buffer[i * CFAG12864B_WIDTH /
+ CFAG12864B_BPB + j] |=
+ CFAG12864B_BIT(n);
+ }
+}
+
+/*
+ * blit buffer to lcd
+ */
+static void cfag12864b_blit(void)
+{
+ memcpy(cfag12864b_mem, cfag12864b_buffer, CFAG12864B_SIZE);
+}
+
+/*
+ * ----------------------
+ * end of cfag12864b code
+ * ----------------------
+ */
+
+#include <stdio.h>
+
+#define EXAMPLES 6
+
+static void example(unsigned char n)
+{
+ unsigned short i, j;
+ unsigned char matrix[CFAG12864B_WIDTH * CFAG12864B_HEIGHT];
+
+ if (n > EXAMPLES)
+ return;
+
+ printf("Example %i/%i - ", n, EXAMPLES);
+
+ switch (n) {
+ case 1:
+ printf("Draw points setting bits");
+ cfag12864b_clear();
+ for (i = 0; i < CFAG12864B_WIDTH; i += 2)
+ for (j = 0; j < CFAG12864B_HEIGHT; j += 2)
+ cfag12864b_set(i, j);
+ break;
+
+ case 2:
+ printf("Clear the LCD");
+ cfag12864b_clear();
+ break;
+
+ case 3:
+ printf("Draw rows formatting a [128*64] matrix");
+ memset(matrix, 0, CFAG12864B_WIDTH * CFAG12864B_HEIGHT);
+ for (i = 0; i < CFAG12864B_WIDTH; i++)
+ for (j = 0; j < CFAG12864B_HEIGHT; j += 2)
+ matrix[j * CFAG12864B_WIDTH + i] = 1;
+ cfag12864b_format(matrix);
+ break;
+
+ case 4:
+ printf("Fill the lcd");
+ cfag12864b_fill();
+ break;
+
+ case 5:
+ printf("Draw columns unsetting bits");
+ for (i = 0; i < CFAG12864B_WIDTH; i += 2)
+ for (j = 0; j < CFAG12864B_HEIGHT; j++)
+ cfag12864b_unset(i, j);
+ break;
+
+ case 6:
+ printf("Do negative not-ing all bits");
+ for (i = 0; i < CFAG12864B_WIDTH; i++)
+ for (j = 0; j < CFAG12864B_HEIGHT; j ++)
+ cfag12864b_not(i, j);
+ break;
+ }
+
+ puts(" - [Press Enter]");
+}
+
+int main(int argc, char *argv[])
+{
+ unsigned char n;
+
+ if (argc != 2) {
+ printf(
+ "Sintax: %s fbdev\n"
+ "Usually: /dev/fb0, /dev/fb1...\n", argv[0]);
+ return -1;
+ }
+
+ if (cfag12864b_init(argv[1])) {
+ printf("Can't init %s fbdev\n", argv[1]);
+ return -2;
+ }
+
+ for (n = 1; n <= EXAMPLES; n++) {
+ example(n);
+ cfag12864b_blit();
+ while (getchar() != '\n');
+ }
+
+ cfag12864b_exit();
+
+ return 0;
+}
--
2.7.4
^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [PATCH v2 0/4] Move runnable examples code from Documentation to samples
2016-09-21 19:47 [PATCH v2 0/4] Move runnable examples code from Documentation to samples Shuah Khan
` (3 preceding siblings ...)
2016-09-21 19:47 ` [PATCH v2 4/4] samples: move auxdisplay " Shuah Khan
@ 2016-09-21 20:18 ` Jonathan Corbet
4 siblings, 0 replies; 8+ messages in thread
From: Jonathan Corbet @ 2016-09-21 20:18 UTC (permalink / raw)
To: Shuah Khan
Cc: tomas.winkler, tglx, clemens, wim, linux, davem, geert, akpm,
gregkh, kvalo, mchehab, ghackmann, ben, maheshkhanwalkar,
linux-doc, linux-kernel, linux-watchdog
On Wed, 21 Sep 2016 13:47:29 -0600
Shuah Khan <shuahkh@osg.samsung.com> wrote:
> Move runnable examples code from Documentation to samples. I moved
> just the example code, and left documentation files as is.
>
> I dropped accounting, laptops, and pcmcia from this v2 series as per
> the v1 feedback on these being a better fit under tools. I will send
> a separate v2 for them.
>
> If v2 patches look good, and if I get an okay, I will try to get these
> into 4.9-rc1
>
> Changes since v1:
> - Updated location information in .txt for timers, watchdog, and
> auxdisplay
> - Updated MAINTAINERS file for misc-devices/mei based on feedback
> from Tomas Winkler
> - Added Acked-by from Jon Corbet for timers, and misc-devices/mei
Looks good, feel free to add my ack to the rest.
jon
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^ permalink raw reply [flat|nested] 8+ messages in thread