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path: root/drivers/misc/mic/cosm/cosm_sysfs.c
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Diffstat (limited to 'drivers/misc/mic/cosm/cosm_sysfs.c')
-rw-r--r--drivers/misc/mic/cosm/cosm_sysfs.c449
1 files changed, 0 insertions, 449 deletions
diff --git a/drivers/misc/mic/cosm/cosm_sysfs.c b/drivers/misc/mic/cosm/cosm_sysfs.c
deleted file mode 100644
index e6dac967c1af..000000000000
--- a/drivers/misc/mic/cosm/cosm_sysfs.c
+++ /dev/null
@@ -1,449 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Intel MIC Platform Software Stack (MPSS)
- *
- * Copyright(c) 2015 Intel Corporation.
- *
- * Intel MIC Coprocessor State Management (COSM) Driver
- */
-#include <linux/slab.h>
-#include "cosm_main.h"
-
-/*
- * A state-to-string lookup table, for exposing a human readable state
- * via sysfs. Always keep in sync with enum cosm_states
- */
-const char * const cosm_state_string[] = {
- [MIC_READY] = "ready",
- [MIC_BOOTING] = "booting",
- [MIC_ONLINE] = "online",
- [MIC_SHUTTING_DOWN] = "shutting_down",
- [MIC_RESETTING] = "resetting",
- [MIC_RESET_FAILED] = "reset_failed",
-};
-
-/*
- * A shutdown-status-to-string lookup table, for exposing a human
- * readable state via sysfs. Always keep in sync with enum cosm_shutdown_status
- */
-const char * const cosm_shutdown_status_string[] = {
- [MIC_NOP] = "nop",
- [MIC_CRASHED] = "crashed",
- [MIC_HALTED] = "halted",
- [MIC_POWER_OFF] = "poweroff",
- [MIC_RESTART] = "restart",
-};
-
-void cosm_set_shutdown_status(struct cosm_device *cdev, u8 shutdown_status)
-{
- dev_dbg(&cdev->dev, "Shutdown Status %s -> %s\n",
- cosm_shutdown_status_string[cdev->shutdown_status],
- cosm_shutdown_status_string[shutdown_status]);
- cdev->shutdown_status = shutdown_status;
-}
-
-void cosm_set_state(struct cosm_device *cdev, u8 state)
-{
- dev_dbg(&cdev->dev, "State %s -> %s\n",
- cosm_state_string[cdev->state],
- cosm_state_string[state]);
- cdev->state = state;
- sysfs_notify_dirent(cdev->state_sysfs);
-}
-
-static ssize_t
-family_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev)
- return -EINVAL;
-
- return cdev->hw_ops->family(cdev, buf);
-}
-static DEVICE_ATTR_RO(family);
-
-static ssize_t
-stepping_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev)
- return -EINVAL;
-
- return cdev->hw_ops->stepping(cdev, buf);
-}
-static DEVICE_ATTR_RO(stepping);
-
-static ssize_t
-state_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev || cdev->state >= MIC_LAST)
- return -EINVAL;
-
- return scnprintf(buf, PAGE_SIZE, "%s\n",
- cosm_state_string[cdev->state]);
-}
-
-static ssize_t
-state_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
- int rc;
-
- if (!cdev)
- return -EINVAL;
-
- if (sysfs_streq(buf, "boot")) {
- rc = cosm_start(cdev);
- goto done;
- }
- if (sysfs_streq(buf, "reset")) {
- rc = cosm_reset(cdev);
- goto done;
- }
-
- if (sysfs_streq(buf, "shutdown")) {
- rc = cosm_shutdown(cdev);
- goto done;
- }
- rc = -EINVAL;
-done:
- if (rc)
- count = rc;
- return count;
-}
-static DEVICE_ATTR_RW(state);
-
-static ssize_t shutdown_status_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev || cdev->shutdown_status >= MIC_STATUS_LAST)
- return -EINVAL;
-
- return scnprintf(buf, PAGE_SIZE, "%s\n",
- cosm_shutdown_status_string[cdev->shutdown_status]);
-}
-static DEVICE_ATTR_RO(shutdown_status);
-
-static ssize_t
-heartbeat_enable_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev)
- return -EINVAL;
-
- return scnprintf(buf, PAGE_SIZE, "%d\n", cdev->sysfs_heartbeat_enable);
-}
-
-static ssize_t
-heartbeat_enable_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
- int enable;
- int ret;
-
- if (!cdev)
- return -EINVAL;
-
- mutex_lock(&cdev->cosm_mutex);
- ret = kstrtoint(buf, 10, &enable);
- if (ret)
- goto unlock;
-
- cdev->sysfs_heartbeat_enable = enable;
- /* if state is not online, cdev->heartbeat_watchdog_enable is 0 */
- if (cdev->state == MIC_ONLINE)
- cdev->heartbeat_watchdog_enable = enable;
- ret = count;
-unlock:
- mutex_unlock(&cdev->cosm_mutex);
- return ret;
-}
-static DEVICE_ATTR_RW(heartbeat_enable);
-
-static ssize_t
-cmdline_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
- char *cmdline;
-
- if (!cdev)
- return -EINVAL;
-
- cmdline = cdev->cmdline;
-
- if (cmdline)
- return scnprintf(buf, PAGE_SIZE, "%s\n", cmdline);
- return 0;
-}
-
-static ssize_t
-cmdline_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev)
- return -EINVAL;
-
- mutex_lock(&cdev->cosm_mutex);
- kfree(cdev->cmdline);
-
- cdev->cmdline = kmalloc(count + 1, GFP_KERNEL);
- if (!cdev->cmdline) {
- count = -ENOMEM;
- goto unlock;
- }
-
- strncpy(cdev->cmdline, buf, count);
-
- if (cdev->cmdline[count - 1] == '\n')
- cdev->cmdline[count - 1] = '\0';
- else
- cdev->cmdline[count] = '\0';
-unlock:
- mutex_unlock(&cdev->cosm_mutex);
- return count;
-}
-static DEVICE_ATTR_RW(cmdline);
-
-static ssize_t
-firmware_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
- char *firmware;
-
- if (!cdev)
- return -EINVAL;
-
- firmware = cdev->firmware;
-
- if (firmware)
- return scnprintf(buf, PAGE_SIZE, "%s\n", firmware);
- return 0;
-}
-
-static ssize_t
-firmware_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev)
- return -EINVAL;
-
- mutex_lock(&cdev->cosm_mutex);
- kfree(cdev->firmware);
-
- cdev->firmware = kmalloc(count + 1, GFP_KERNEL);
- if (!cdev->firmware) {
- count = -ENOMEM;
- goto unlock;
- }
- strncpy(cdev->firmware, buf, count);
-
- if (cdev->firmware[count - 1] == '\n')
- cdev->firmware[count - 1] = '\0';
- else
- cdev->firmware[count] = '\0';
-unlock:
- mutex_unlock(&cdev->cosm_mutex);
- return count;
-}
-static DEVICE_ATTR_RW(firmware);
-
-static ssize_t
-ramdisk_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
- char *ramdisk;
-
- if (!cdev)
- return -EINVAL;
-
- ramdisk = cdev->ramdisk;
-
- if (ramdisk)
- return scnprintf(buf, PAGE_SIZE, "%s\n", ramdisk);
- return 0;
-}
-
-static ssize_t
-ramdisk_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev)
- return -EINVAL;
-
- mutex_lock(&cdev->cosm_mutex);
- kfree(cdev->ramdisk);
-
- cdev->ramdisk = kmalloc(count + 1, GFP_KERNEL);
- if (!cdev->ramdisk) {
- count = -ENOMEM;
- goto unlock;
- }
-
- strncpy(cdev->ramdisk, buf, count);
-
- if (cdev->ramdisk[count - 1] == '\n')
- cdev->ramdisk[count - 1] = '\0';
- else
- cdev->ramdisk[count] = '\0';
-unlock:
- mutex_unlock(&cdev->cosm_mutex);
- return count;
-}
-static DEVICE_ATTR_RW(ramdisk);
-
-static ssize_t
-bootmode_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
- char *bootmode;
-
- if (!cdev)
- return -EINVAL;
-
- bootmode = cdev->bootmode;
-
- if (bootmode)
- return scnprintf(buf, PAGE_SIZE, "%s\n", bootmode);
- return 0;
-}
-
-static ssize_t
-bootmode_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev)
- return -EINVAL;
-
- if (!sysfs_streq(buf, "linux") && !sysfs_streq(buf, "flash"))
- return -EINVAL;
-
- mutex_lock(&cdev->cosm_mutex);
- kfree(cdev->bootmode);
-
- cdev->bootmode = kmalloc(count + 1, GFP_KERNEL);
- if (!cdev->bootmode) {
- count = -ENOMEM;
- goto unlock;
- }
-
- strncpy(cdev->bootmode, buf, count);
-
- if (cdev->bootmode[count - 1] == '\n')
- cdev->bootmode[count - 1] = '\0';
- else
- cdev->bootmode[count] = '\0';
-unlock:
- mutex_unlock(&cdev->cosm_mutex);
- return count;
-}
-static DEVICE_ATTR_RW(bootmode);
-
-static ssize_t
-log_buf_addr_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev)
- return -EINVAL;
-
- return scnprintf(buf, PAGE_SIZE, "%p\n", cdev->log_buf_addr);
-}
-
-static ssize_t
-log_buf_addr_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
- int ret;
- unsigned long addr;
-
- if (!cdev)
- return -EINVAL;
-
- ret = kstrtoul(buf, 16, &addr);
- if (ret)
- goto exit;
-
- cdev->log_buf_addr = (void *)addr;
- ret = count;
-exit:
- return ret;
-}
-static DEVICE_ATTR_RW(log_buf_addr);
-
-static ssize_t
-log_buf_len_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
-
- if (!cdev)
- return -EINVAL;
-
- return scnprintf(buf, PAGE_SIZE, "%p\n", cdev->log_buf_len);
-}
-
-static ssize_t
-log_buf_len_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct cosm_device *cdev = dev_get_drvdata(dev);
- int ret;
- unsigned long addr;
-
- if (!cdev)
- return -EINVAL;
-
- ret = kstrtoul(buf, 16, &addr);
- if (ret)
- goto exit;
-
- cdev->log_buf_len = (int *)addr;
- ret = count;
-exit:
- return ret;
-}
-static DEVICE_ATTR_RW(log_buf_len);
-
-static struct attribute *cosm_default_attrs[] = {
- &dev_attr_family.attr,
- &dev_attr_stepping.attr,
- &dev_attr_state.attr,
- &dev_attr_shutdown_status.attr,
- &dev_attr_heartbeat_enable.attr,
- &dev_attr_cmdline.attr,
- &dev_attr_firmware.attr,
- &dev_attr_ramdisk.attr,
- &dev_attr_bootmode.attr,
- &dev_attr_log_buf_addr.attr,
- &dev_attr_log_buf_len.attr,
-
- NULL
-};
-
-ATTRIBUTE_GROUPS(cosm_default);
-
-void cosm_sysfs_init(struct cosm_device *cdev)
-{
- cdev->attr_group = cosm_default_groups;
-}
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-31 07:52:55 +0000