mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 02:23:16 +00:00
a066f906ba
No error code are available to signal an invalid firmware content. Drivers that can check the firmware content validity can not return this specific failure to the user-space Expand the firmware error code with an additional code: - "firmware invalid" code which can be used when the provided firmware is invalid Sync lib/test_firmware.c file accordingly. Acked-by: Luis Chamberlain <mcgrof@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20231122-feature_firmware_error_code-v3-1-04ec753afb71@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
1571 lines
37 KiB
C
1571 lines
37 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* This module provides an interface to trigger and test firmware loading.
|
|
*
|
|
* It is designed to be used for basic evaluation of the firmware loading
|
|
* subsystem (for example when validating firmware verification). It lacks
|
|
* any extra dependencies, and will not normally be loaded by the system
|
|
* unless explicitly requested by name.
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/completion.h>
|
|
#include <linux/firmware.h>
|
|
#include <linux/device.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/miscdevice.h>
|
|
#include <linux/sizes.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/kstrtox.h>
|
|
#include <linux/kthread.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/efi_embedded_fw.h>
|
|
|
|
MODULE_IMPORT_NS(TEST_FIRMWARE);
|
|
|
|
#define TEST_FIRMWARE_NAME "test-firmware.bin"
|
|
#define TEST_FIRMWARE_NUM_REQS 4
|
|
#define TEST_FIRMWARE_BUF_SIZE SZ_1K
|
|
#define TEST_UPLOAD_MAX_SIZE SZ_2K
|
|
#define TEST_UPLOAD_BLK_SIZE 37 /* Avoid powers of two in testing */
|
|
|
|
static DEFINE_MUTEX(test_fw_mutex);
|
|
static const struct firmware *test_firmware;
|
|
static LIST_HEAD(test_upload_list);
|
|
|
|
struct test_batched_req {
|
|
u8 idx;
|
|
int rc;
|
|
bool sent;
|
|
const struct firmware *fw;
|
|
const char *name;
|
|
const char *fw_buf;
|
|
struct completion completion;
|
|
struct task_struct *task;
|
|
struct device *dev;
|
|
};
|
|
|
|
/**
|
|
* struct test_config - represents configuration for the test for different triggers
|
|
*
|
|
* @name: the name of the firmware file to look for
|
|
* @into_buf: when the into_buf is used if this is true
|
|
* request_firmware_into_buf() will be used instead.
|
|
* @buf_size: size of buf to allocate when into_buf is true
|
|
* @file_offset: file offset to request when calling request_firmware_into_buf
|
|
* @partial: partial read opt when calling request_firmware_into_buf
|
|
* @sync_direct: when the sync trigger is used if this is true
|
|
* request_firmware_direct() will be used instead.
|
|
* @send_uevent: whether or not to send a uevent for async requests
|
|
* @num_requests: number of requests to try per test case. This is trigger
|
|
* specific.
|
|
* @reqs: stores all requests information
|
|
* @read_fw_idx: index of thread from which we want to read firmware results
|
|
* from through the read_fw trigger.
|
|
* @upload_name: firmware name to be used with upload_read sysfs node
|
|
* @test_result: a test may use this to collect the result from the call
|
|
* of the request_firmware*() calls used in their tests. In order of
|
|
* priority we always keep first any setup error. If no setup errors were
|
|
* found then we move on to the first error encountered while running the
|
|
* API. Note that for async calls this typically will be a successful
|
|
* result (0) unless of course you've used bogus parameters, or the system
|
|
* is out of memory. In the async case the callback is expected to do a
|
|
* bit more homework to figure out what happened, unfortunately the only
|
|
* information passed today on error is the fact that no firmware was
|
|
* found so we can only assume -ENOENT on async calls if the firmware is
|
|
* NULL.
|
|
*
|
|
* Errors you can expect:
|
|
*
|
|
* API specific:
|
|
*
|
|
* 0: success for sync, for async it means request was sent
|
|
* -EINVAL: invalid parameters or request
|
|
* -ENOENT: files not found
|
|
*
|
|
* System environment:
|
|
*
|
|
* -ENOMEM: memory pressure on system
|
|
* -ENODEV: out of number of devices to test
|
|
* -EINVAL: an unexpected error has occurred
|
|
* @req_firmware: if @sync_direct is true this is set to
|
|
* request_firmware_direct(), otherwise request_firmware()
|
|
*/
|
|
struct test_config {
|
|
char *name;
|
|
bool into_buf;
|
|
size_t buf_size;
|
|
size_t file_offset;
|
|
bool partial;
|
|
bool sync_direct;
|
|
bool send_uevent;
|
|
u8 num_requests;
|
|
u8 read_fw_idx;
|
|
char *upload_name;
|
|
|
|
/*
|
|
* These below don't belong her but we'll move them once we create
|
|
* a struct fw_test_device and stuff the misc_dev under there later.
|
|
*/
|
|
struct test_batched_req *reqs;
|
|
int test_result;
|
|
int (*req_firmware)(const struct firmware **fw, const char *name,
|
|
struct device *device);
|
|
};
|
|
|
|
struct upload_inject_err {
|
|
const char *prog;
|
|
enum fw_upload_err err_code;
|
|
};
|
|
|
|
struct test_firmware_upload {
|
|
char *name;
|
|
struct list_head node;
|
|
char *buf;
|
|
size_t size;
|
|
bool cancel_request;
|
|
struct upload_inject_err inject;
|
|
struct fw_upload *fwl;
|
|
};
|
|
|
|
static struct test_config *test_fw_config;
|
|
|
|
static struct test_firmware_upload *upload_lookup_name(const char *name)
|
|
{
|
|
struct test_firmware_upload *tst;
|
|
|
|
list_for_each_entry(tst, &test_upload_list, node)
|
|
if (strncmp(name, tst->name, strlen(tst->name)) == 0)
|
|
return tst;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static ssize_t test_fw_misc_read(struct file *f, char __user *buf,
|
|
size_t size, loff_t *offset)
|
|
{
|
|
ssize_t rc = 0;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
if (test_firmware)
|
|
rc = simple_read_from_buffer(buf, size, offset,
|
|
test_firmware->data,
|
|
test_firmware->size);
|
|
mutex_unlock(&test_fw_mutex);
|
|
return rc;
|
|
}
|
|
|
|
static const struct file_operations test_fw_fops = {
|
|
.owner = THIS_MODULE,
|
|
.read = test_fw_misc_read,
|
|
};
|
|
|
|
static void __test_release_all_firmware(void)
|
|
{
|
|
struct test_batched_req *req;
|
|
u8 i;
|
|
|
|
if (!test_fw_config->reqs)
|
|
return;
|
|
|
|
for (i = 0; i < test_fw_config->num_requests; i++) {
|
|
req = &test_fw_config->reqs[i];
|
|
if (req->fw) {
|
|
if (req->fw_buf) {
|
|
kfree_const(req->fw_buf);
|
|
req->fw_buf = NULL;
|
|
}
|
|
release_firmware(req->fw);
|
|
req->fw = NULL;
|
|
}
|
|
}
|
|
|
|
vfree(test_fw_config->reqs);
|
|
test_fw_config->reqs = NULL;
|
|
}
|
|
|
|
static void test_release_all_firmware(void)
|
|
{
|
|
mutex_lock(&test_fw_mutex);
|
|
__test_release_all_firmware();
|
|
mutex_unlock(&test_fw_mutex);
|
|
}
|
|
|
|
|
|
static void __test_firmware_config_free(void)
|
|
{
|
|
__test_release_all_firmware();
|
|
kfree_const(test_fw_config->name);
|
|
test_fw_config->name = NULL;
|
|
}
|
|
|
|
/*
|
|
* XXX: move to kstrncpy() once merged.
|
|
*
|
|
* Users should use kfree_const() when freeing these.
|
|
*/
|
|
static int __kstrncpy(char **dst, const char *name, size_t count, gfp_t gfp)
|
|
{
|
|
*dst = kstrndup(name, count, gfp);
|
|
if (!*dst)
|
|
return -ENOMEM;
|
|
return count;
|
|
}
|
|
|
|
static int __test_firmware_config_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = __kstrncpy(&test_fw_config->name, TEST_FIRMWARE_NAME,
|
|
strlen(TEST_FIRMWARE_NAME), GFP_KERNEL);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
test_fw_config->num_requests = TEST_FIRMWARE_NUM_REQS;
|
|
test_fw_config->send_uevent = true;
|
|
test_fw_config->into_buf = false;
|
|
test_fw_config->buf_size = TEST_FIRMWARE_BUF_SIZE;
|
|
test_fw_config->file_offset = 0;
|
|
test_fw_config->partial = false;
|
|
test_fw_config->sync_direct = false;
|
|
test_fw_config->req_firmware = request_firmware;
|
|
test_fw_config->test_result = 0;
|
|
test_fw_config->reqs = NULL;
|
|
test_fw_config->upload_name = NULL;
|
|
|
|
return 0;
|
|
|
|
out:
|
|
__test_firmware_config_free();
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t reset_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
|
|
__test_firmware_config_free();
|
|
|
|
ret = __test_firmware_config_init();
|
|
if (ret < 0) {
|
|
ret = -ENOMEM;
|
|
pr_err("could not alloc settings for config trigger: %d\n",
|
|
ret);
|
|
goto out;
|
|
}
|
|
|
|
pr_info("reset\n");
|
|
ret = count;
|
|
|
|
out:
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return ret;
|
|
}
|
|
static DEVICE_ATTR_WO(reset);
|
|
|
|
static ssize_t config_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int len = 0;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
|
|
len += scnprintf(buf, PAGE_SIZE - len,
|
|
"Custom trigger configuration for: %s\n",
|
|
dev_name(dev));
|
|
|
|
if (test_fw_config->name)
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"name:\t%s\n",
|
|
test_fw_config->name);
|
|
else
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"name:\tEMPTY\n");
|
|
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"num_requests:\t%u\n", test_fw_config->num_requests);
|
|
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"send_uevent:\t\t%s\n",
|
|
test_fw_config->send_uevent ?
|
|
"FW_ACTION_UEVENT" :
|
|
"FW_ACTION_NOUEVENT");
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"into_buf:\t\t%s\n",
|
|
test_fw_config->into_buf ? "true" : "false");
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"buf_size:\t%zu\n", test_fw_config->buf_size);
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"file_offset:\t%zu\n", test_fw_config->file_offset);
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"partial:\t\t%s\n",
|
|
test_fw_config->partial ? "true" : "false");
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"sync_direct:\t\t%s\n",
|
|
test_fw_config->sync_direct ? "true" : "false");
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"read_fw_idx:\t%u\n", test_fw_config->read_fw_idx);
|
|
if (test_fw_config->upload_name)
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"upload_name:\t%s\n",
|
|
test_fw_config->upload_name);
|
|
else
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
"upload_name:\tEMPTY\n");
|
|
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return len;
|
|
}
|
|
static DEVICE_ATTR_RO(config);
|
|
|
|
static ssize_t config_name_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
kfree_const(test_fw_config->name);
|
|
ret = __kstrncpy(&test_fw_config->name, buf, count, GFP_KERNEL);
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* As per sysfs_kf_seq_show() the buf is max PAGE_SIZE.
|
|
*/
|
|
static ssize_t config_test_show_str(char *dst,
|
|
char *src)
|
|
{
|
|
int len;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
len = snprintf(dst, PAGE_SIZE, "%s\n", src);
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return len;
|
|
}
|
|
|
|
static inline int __test_dev_config_update_bool(const char *buf, size_t size,
|
|
bool *cfg)
|
|
{
|
|
int ret;
|
|
|
|
if (kstrtobool(buf, cfg) < 0)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = size;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int test_dev_config_update_bool(const char *buf, size_t size,
|
|
bool *cfg)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
ret = __test_dev_config_update_bool(buf, size, cfg);
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t test_dev_config_show_bool(char *buf, bool val)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
}
|
|
|
|
static int __test_dev_config_update_size_t(
|
|
const char *buf,
|
|
size_t size,
|
|
size_t *cfg)
|
|
{
|
|
int ret;
|
|
long new;
|
|
|
|
ret = kstrtol(buf, 10, &new);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*(size_t *)cfg = new;
|
|
|
|
/* Always return full write size even if we didn't consume all */
|
|
return size;
|
|
}
|
|
|
|
static ssize_t test_dev_config_show_size_t(char *buf, size_t val)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE, "%zu\n", val);
|
|
}
|
|
|
|
static ssize_t test_dev_config_show_int(char *buf, int val)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
}
|
|
|
|
static int __test_dev_config_update_u8(const char *buf, size_t size, u8 *cfg)
|
|
{
|
|
u8 val;
|
|
int ret;
|
|
|
|
ret = kstrtou8(buf, 10, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*(u8 *)cfg = val;
|
|
|
|
/* Always return full write size even if we didn't consume all */
|
|
return size;
|
|
}
|
|
|
|
static int test_dev_config_update_u8(const char *buf, size_t size, u8 *cfg)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
ret = __test_dev_config_update_u8(buf, size, cfg);
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t test_dev_config_show_u8(char *buf, u8 val)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE, "%u\n", val);
|
|
}
|
|
|
|
static ssize_t config_name_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return config_test_show_str(buf, test_fw_config->name);
|
|
}
|
|
static DEVICE_ATTR_RW(config_name);
|
|
|
|
static ssize_t config_upload_name_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct test_firmware_upload *tst;
|
|
int ret = count;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
tst = upload_lookup_name(buf);
|
|
if (tst)
|
|
test_fw_config->upload_name = tst->name;
|
|
else
|
|
ret = -EINVAL;
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t config_upload_name_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return config_test_show_str(buf, test_fw_config->upload_name);
|
|
}
|
|
static DEVICE_ATTR_RW(config_upload_name);
|
|
|
|
static ssize_t config_num_requests_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int rc;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
if (test_fw_config->reqs) {
|
|
pr_err("Must call release_all_firmware prior to changing config\n");
|
|
rc = -EINVAL;
|
|
mutex_unlock(&test_fw_mutex);
|
|
goto out;
|
|
}
|
|
|
|
rc = __test_dev_config_update_u8(buf, count,
|
|
&test_fw_config->num_requests);
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
static ssize_t config_num_requests_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return test_dev_config_show_u8(buf, test_fw_config->num_requests);
|
|
}
|
|
static DEVICE_ATTR_RW(config_num_requests);
|
|
|
|
static ssize_t config_into_buf_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
return test_dev_config_update_bool(buf,
|
|
count,
|
|
&test_fw_config->into_buf);
|
|
}
|
|
|
|
static ssize_t config_into_buf_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return test_dev_config_show_bool(buf, test_fw_config->into_buf);
|
|
}
|
|
static DEVICE_ATTR_RW(config_into_buf);
|
|
|
|
static ssize_t config_buf_size_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int rc;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
if (test_fw_config->reqs) {
|
|
pr_err("Must call release_all_firmware prior to changing config\n");
|
|
rc = -EINVAL;
|
|
mutex_unlock(&test_fw_mutex);
|
|
goto out;
|
|
}
|
|
|
|
rc = __test_dev_config_update_size_t(buf, count,
|
|
&test_fw_config->buf_size);
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
static ssize_t config_buf_size_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return test_dev_config_show_size_t(buf, test_fw_config->buf_size);
|
|
}
|
|
static DEVICE_ATTR_RW(config_buf_size);
|
|
|
|
static ssize_t config_file_offset_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int rc;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
if (test_fw_config->reqs) {
|
|
pr_err("Must call release_all_firmware prior to changing config\n");
|
|
rc = -EINVAL;
|
|
mutex_unlock(&test_fw_mutex);
|
|
goto out;
|
|
}
|
|
|
|
rc = __test_dev_config_update_size_t(buf, count,
|
|
&test_fw_config->file_offset);
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
static ssize_t config_file_offset_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return test_dev_config_show_size_t(buf, test_fw_config->file_offset);
|
|
}
|
|
static DEVICE_ATTR_RW(config_file_offset);
|
|
|
|
static ssize_t config_partial_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
return test_dev_config_update_bool(buf,
|
|
count,
|
|
&test_fw_config->partial);
|
|
}
|
|
|
|
static ssize_t config_partial_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return test_dev_config_show_bool(buf, test_fw_config->partial);
|
|
}
|
|
static DEVICE_ATTR_RW(config_partial);
|
|
|
|
static ssize_t config_sync_direct_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int rc = test_dev_config_update_bool(buf, count,
|
|
&test_fw_config->sync_direct);
|
|
|
|
if (rc == count)
|
|
test_fw_config->req_firmware = test_fw_config->sync_direct ?
|
|
request_firmware_direct :
|
|
request_firmware;
|
|
return rc;
|
|
}
|
|
|
|
static ssize_t config_sync_direct_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return test_dev_config_show_bool(buf, test_fw_config->sync_direct);
|
|
}
|
|
static DEVICE_ATTR_RW(config_sync_direct);
|
|
|
|
static ssize_t config_send_uevent_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
return test_dev_config_update_bool(buf, count,
|
|
&test_fw_config->send_uevent);
|
|
}
|
|
|
|
static ssize_t config_send_uevent_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return test_dev_config_show_bool(buf, test_fw_config->send_uevent);
|
|
}
|
|
static DEVICE_ATTR_RW(config_send_uevent);
|
|
|
|
static ssize_t config_read_fw_idx_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
return test_dev_config_update_u8(buf, count,
|
|
&test_fw_config->read_fw_idx);
|
|
}
|
|
|
|
static ssize_t config_read_fw_idx_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return test_dev_config_show_u8(buf, test_fw_config->read_fw_idx);
|
|
}
|
|
static DEVICE_ATTR_RW(config_read_fw_idx);
|
|
|
|
|
|
static ssize_t trigger_request_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int rc;
|
|
char *name;
|
|
|
|
name = kstrndup(buf, count, GFP_KERNEL);
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
pr_info("loading '%s'\n", name);
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
release_firmware(test_firmware);
|
|
if (test_fw_config->reqs)
|
|
__test_release_all_firmware();
|
|
test_firmware = NULL;
|
|
rc = request_firmware(&test_firmware, name, dev);
|
|
if (rc) {
|
|
pr_info("load of '%s' failed: %d\n", name, rc);
|
|
goto out;
|
|
}
|
|
pr_info("loaded: %zu\n", test_firmware->size);
|
|
rc = count;
|
|
|
|
out:
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
kfree(name);
|
|
|
|
return rc;
|
|
}
|
|
static DEVICE_ATTR_WO(trigger_request);
|
|
|
|
#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
|
|
extern struct list_head efi_embedded_fw_list;
|
|
extern bool efi_embedded_fw_checked;
|
|
|
|
static ssize_t trigger_request_platform_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
static const u8 test_data[] = {
|
|
0x55, 0xaa, 0x55, 0xaa, 0x01, 0x02, 0x03, 0x04,
|
|
0x55, 0xaa, 0x55, 0xaa, 0x05, 0x06, 0x07, 0x08,
|
|
0x55, 0xaa, 0x55, 0xaa, 0x10, 0x20, 0x30, 0x40,
|
|
0x55, 0xaa, 0x55, 0xaa, 0x50, 0x60, 0x70, 0x80
|
|
};
|
|
struct efi_embedded_fw efi_embedded_fw;
|
|
const struct firmware *firmware = NULL;
|
|
bool saved_efi_embedded_fw_checked;
|
|
char *name;
|
|
int rc;
|
|
|
|
name = kstrndup(buf, count, GFP_KERNEL);
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
pr_info("inserting test platform fw '%s'\n", name);
|
|
efi_embedded_fw.name = name;
|
|
efi_embedded_fw.data = (void *)test_data;
|
|
efi_embedded_fw.length = sizeof(test_data);
|
|
list_add(&efi_embedded_fw.list, &efi_embedded_fw_list);
|
|
saved_efi_embedded_fw_checked = efi_embedded_fw_checked;
|
|
efi_embedded_fw_checked = true;
|
|
|
|
pr_info("loading '%s'\n", name);
|
|
rc = firmware_request_platform(&firmware, name, dev);
|
|
if (rc) {
|
|
pr_info("load of '%s' failed: %d\n", name, rc);
|
|
goto out;
|
|
}
|
|
if (firmware->size != sizeof(test_data) ||
|
|
memcmp(firmware->data, test_data, sizeof(test_data)) != 0) {
|
|
pr_info("firmware contents mismatch for '%s'\n", name);
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
pr_info("loaded: %zu\n", firmware->size);
|
|
rc = count;
|
|
|
|
out:
|
|
efi_embedded_fw_checked = saved_efi_embedded_fw_checked;
|
|
release_firmware(firmware);
|
|
list_del(&efi_embedded_fw.list);
|
|
kfree(name);
|
|
|
|
return rc;
|
|
}
|
|
static DEVICE_ATTR_WO(trigger_request_platform);
|
|
#endif
|
|
|
|
static DECLARE_COMPLETION(async_fw_done);
|
|
|
|
static void trigger_async_request_cb(const struct firmware *fw, void *context)
|
|
{
|
|
test_firmware = fw;
|
|
complete(&async_fw_done);
|
|
}
|
|
|
|
static ssize_t trigger_async_request_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int rc;
|
|
char *name;
|
|
|
|
name = kstrndup(buf, count, GFP_KERNEL);
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
pr_info("loading '%s'\n", name);
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
release_firmware(test_firmware);
|
|
test_firmware = NULL;
|
|
if (test_fw_config->reqs)
|
|
__test_release_all_firmware();
|
|
rc = request_firmware_nowait(THIS_MODULE, 1, name, dev, GFP_KERNEL,
|
|
NULL, trigger_async_request_cb);
|
|
if (rc) {
|
|
pr_info("async load of '%s' failed: %d\n", name, rc);
|
|
kfree(name);
|
|
goto out;
|
|
}
|
|
/* Free 'name' ASAP, to test for race conditions */
|
|
kfree(name);
|
|
|
|
wait_for_completion(&async_fw_done);
|
|
|
|
if (test_firmware) {
|
|
pr_info("loaded: %zu\n", test_firmware->size);
|
|
rc = count;
|
|
} else {
|
|
pr_err("failed to async load firmware\n");
|
|
rc = -ENOMEM;
|
|
}
|
|
|
|
out:
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return rc;
|
|
}
|
|
static DEVICE_ATTR_WO(trigger_async_request);
|
|
|
|
static ssize_t trigger_custom_fallback_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int rc;
|
|
char *name;
|
|
|
|
name = kstrndup(buf, count, GFP_KERNEL);
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
pr_info("loading '%s' using custom fallback mechanism\n", name);
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
release_firmware(test_firmware);
|
|
if (test_fw_config->reqs)
|
|
__test_release_all_firmware();
|
|
test_firmware = NULL;
|
|
rc = request_firmware_nowait(THIS_MODULE, FW_ACTION_NOUEVENT, name,
|
|
dev, GFP_KERNEL, NULL,
|
|
trigger_async_request_cb);
|
|
if (rc) {
|
|
pr_info("async load of '%s' failed: %d\n", name, rc);
|
|
kfree(name);
|
|
goto out;
|
|
}
|
|
/* Free 'name' ASAP, to test for race conditions */
|
|
kfree(name);
|
|
|
|
wait_for_completion(&async_fw_done);
|
|
|
|
if (test_firmware) {
|
|
pr_info("loaded: %zu\n", test_firmware->size);
|
|
rc = count;
|
|
} else {
|
|
pr_err("failed to async load firmware\n");
|
|
rc = -ENODEV;
|
|
}
|
|
|
|
out:
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return rc;
|
|
}
|
|
static DEVICE_ATTR_WO(trigger_custom_fallback);
|
|
|
|
static int test_fw_run_batch_request(void *data)
|
|
{
|
|
struct test_batched_req *req = data;
|
|
|
|
if (!req) {
|
|
test_fw_config->test_result = -EINVAL;
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (test_fw_config->into_buf) {
|
|
void *test_buf;
|
|
|
|
test_buf = kzalloc(TEST_FIRMWARE_BUF_SIZE, GFP_KERNEL);
|
|
if (!test_buf)
|
|
return -ENOMEM;
|
|
|
|
if (test_fw_config->partial)
|
|
req->rc = request_partial_firmware_into_buf
|
|
(&req->fw,
|
|
req->name,
|
|
req->dev,
|
|
test_buf,
|
|
test_fw_config->buf_size,
|
|
test_fw_config->file_offset);
|
|
else
|
|
req->rc = request_firmware_into_buf
|
|
(&req->fw,
|
|
req->name,
|
|
req->dev,
|
|
test_buf,
|
|
test_fw_config->buf_size);
|
|
if (!req->fw)
|
|
kfree(test_buf);
|
|
else
|
|
req->fw_buf = test_buf;
|
|
} else {
|
|
req->rc = test_fw_config->req_firmware(&req->fw,
|
|
req->name,
|
|
req->dev);
|
|
}
|
|
|
|
if (req->rc) {
|
|
pr_info("#%u: batched sync load failed: %d\n",
|
|
req->idx, req->rc);
|
|
if (!test_fw_config->test_result)
|
|
test_fw_config->test_result = req->rc;
|
|
} else if (req->fw) {
|
|
req->sent = true;
|
|
pr_info("#%u: batched sync loaded %zu\n",
|
|
req->idx, req->fw->size);
|
|
}
|
|
complete(&req->completion);
|
|
|
|
req->task = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* We use a kthread as otherwise the kernel serializes all our sync requests
|
|
* and we would not be able to mimic batched requests on a sync call. Batched
|
|
* requests on a sync call can for instance happen on a device driver when
|
|
* multiple cards are used and firmware loading happens outside of probe.
|
|
*/
|
|
static ssize_t trigger_batched_requests_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct test_batched_req *req;
|
|
int rc;
|
|
u8 i;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
|
|
if (test_fw_config->reqs) {
|
|
rc = -EBUSY;
|
|
goto out_bail;
|
|
}
|
|
|
|
test_fw_config->reqs =
|
|
vzalloc(array3_size(sizeof(struct test_batched_req),
|
|
test_fw_config->num_requests, 2));
|
|
if (!test_fw_config->reqs) {
|
|
rc = -ENOMEM;
|
|
goto out_unlock;
|
|
}
|
|
|
|
pr_info("batched sync firmware loading '%s' %u times\n",
|
|
test_fw_config->name, test_fw_config->num_requests);
|
|
|
|
for (i = 0; i < test_fw_config->num_requests; i++) {
|
|
req = &test_fw_config->reqs[i];
|
|
req->fw = NULL;
|
|
req->idx = i;
|
|
req->name = test_fw_config->name;
|
|
req->fw_buf = NULL;
|
|
req->dev = dev;
|
|
init_completion(&req->completion);
|
|
req->task = kthread_run(test_fw_run_batch_request, req,
|
|
"%s-%u", KBUILD_MODNAME, req->idx);
|
|
if (!req->task || IS_ERR(req->task)) {
|
|
pr_err("Setting up thread %u failed\n", req->idx);
|
|
req->task = NULL;
|
|
rc = -ENOMEM;
|
|
goto out_bail;
|
|
}
|
|
}
|
|
|
|
rc = count;
|
|
|
|
/*
|
|
* We require an explicit release to enable more time and delay of
|
|
* calling release_firmware() to improve our chances of forcing a
|
|
* batched request. If we instead called release_firmware() right away
|
|
* then we might miss on an opportunity of having a successful firmware
|
|
* request pass on the opportunity to be come a batched request.
|
|
*/
|
|
|
|
out_bail:
|
|
for (i = 0; i < test_fw_config->num_requests; i++) {
|
|
req = &test_fw_config->reqs[i];
|
|
if (req->task || req->sent)
|
|
wait_for_completion(&req->completion);
|
|
}
|
|
|
|
/* Override any worker error if we had a general setup error */
|
|
if (rc < 0)
|
|
test_fw_config->test_result = rc;
|
|
|
|
out_unlock:
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return rc;
|
|
}
|
|
static DEVICE_ATTR_WO(trigger_batched_requests);
|
|
|
|
/*
|
|
* We wait for each callback to return with the lock held, no need to lock here
|
|
*/
|
|
static void trigger_batched_cb(const struct firmware *fw, void *context)
|
|
{
|
|
struct test_batched_req *req = context;
|
|
|
|
if (!req) {
|
|
test_fw_config->test_result = -EINVAL;
|
|
return;
|
|
}
|
|
|
|
/* forces *some* batched requests to queue up */
|
|
if (!req->idx)
|
|
ssleep(2);
|
|
|
|
req->fw = fw;
|
|
|
|
/*
|
|
* Unfortunately the firmware API gives us nothing other than a null FW
|
|
* if the firmware was not found on async requests. Best we can do is
|
|
* just assume -ENOENT. A better API would pass the actual return
|
|
* value to the callback.
|
|
*/
|
|
if (!fw && !test_fw_config->test_result)
|
|
test_fw_config->test_result = -ENOENT;
|
|
|
|
complete(&req->completion);
|
|
}
|
|
|
|
static
|
|
ssize_t trigger_batched_requests_async_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct test_batched_req *req;
|
|
bool send_uevent;
|
|
int rc;
|
|
u8 i;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
|
|
if (test_fw_config->reqs) {
|
|
rc = -EBUSY;
|
|
goto out_bail;
|
|
}
|
|
|
|
test_fw_config->reqs =
|
|
vzalloc(array3_size(sizeof(struct test_batched_req),
|
|
test_fw_config->num_requests, 2));
|
|
if (!test_fw_config->reqs) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
pr_info("batched loading '%s' custom fallback mechanism %u times\n",
|
|
test_fw_config->name, test_fw_config->num_requests);
|
|
|
|
send_uevent = test_fw_config->send_uevent ? FW_ACTION_UEVENT :
|
|
FW_ACTION_NOUEVENT;
|
|
|
|
for (i = 0; i < test_fw_config->num_requests; i++) {
|
|
req = &test_fw_config->reqs[i];
|
|
req->name = test_fw_config->name;
|
|
req->fw_buf = NULL;
|
|
req->fw = NULL;
|
|
req->idx = i;
|
|
init_completion(&req->completion);
|
|
rc = request_firmware_nowait(THIS_MODULE, send_uevent,
|
|
req->name,
|
|
dev, GFP_KERNEL, req,
|
|
trigger_batched_cb);
|
|
if (rc) {
|
|
pr_info("#%u: batched async load failed setup: %d\n",
|
|
i, rc);
|
|
req->rc = rc;
|
|
goto out_bail;
|
|
} else
|
|
req->sent = true;
|
|
}
|
|
|
|
rc = count;
|
|
|
|
out_bail:
|
|
|
|
/*
|
|
* We require an explicit release to enable more time and delay of
|
|
* calling release_firmware() to improve our chances of forcing a
|
|
* batched request. If we instead called release_firmware() right away
|
|
* then we might miss on an opportunity of having a successful firmware
|
|
* request pass on the opportunity to be come a batched request.
|
|
*/
|
|
|
|
for (i = 0; i < test_fw_config->num_requests; i++) {
|
|
req = &test_fw_config->reqs[i];
|
|
if (req->sent)
|
|
wait_for_completion(&req->completion);
|
|
}
|
|
|
|
/* Override any worker error if we had a general setup error */
|
|
if (rc < 0)
|
|
test_fw_config->test_result = rc;
|
|
|
|
out:
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return rc;
|
|
}
|
|
static DEVICE_ATTR_WO(trigger_batched_requests_async);
|
|
|
|
static void upload_release(struct test_firmware_upload *tst)
|
|
{
|
|
firmware_upload_unregister(tst->fwl);
|
|
kfree(tst->buf);
|
|
kfree(tst->name);
|
|
kfree(tst);
|
|
}
|
|
|
|
static void upload_release_all(void)
|
|
{
|
|
struct test_firmware_upload *tst, *tmp;
|
|
|
|
list_for_each_entry_safe(tst, tmp, &test_upload_list, node) {
|
|
list_del(&tst->node);
|
|
upload_release(tst);
|
|
}
|
|
test_fw_config->upload_name = NULL;
|
|
}
|
|
|
|
/*
|
|
* This table is replicated from .../firmware_loader/sysfs_upload.c
|
|
* and needs to be kept in sync.
|
|
*/
|
|
static const char * const fw_upload_err_str[] = {
|
|
[FW_UPLOAD_ERR_NONE] = "none",
|
|
[FW_UPLOAD_ERR_HW_ERROR] = "hw-error",
|
|
[FW_UPLOAD_ERR_TIMEOUT] = "timeout",
|
|
[FW_UPLOAD_ERR_CANCELED] = "user-abort",
|
|
[FW_UPLOAD_ERR_BUSY] = "device-busy",
|
|
[FW_UPLOAD_ERR_INVALID_SIZE] = "invalid-file-size",
|
|
[FW_UPLOAD_ERR_RW_ERROR] = "read-write-error",
|
|
[FW_UPLOAD_ERR_WEAROUT] = "flash-wearout",
|
|
[FW_UPLOAD_ERR_FW_INVALID] = "firmware-invalid",
|
|
};
|
|
|
|
static void upload_err_inject_error(struct test_firmware_upload *tst,
|
|
const u8 *p, const char *prog)
|
|
{
|
|
enum fw_upload_err err;
|
|
|
|
for (err = FW_UPLOAD_ERR_NONE + 1; err < FW_UPLOAD_ERR_MAX; err++) {
|
|
if (strncmp(p, fw_upload_err_str[err],
|
|
strlen(fw_upload_err_str[err])) == 0) {
|
|
tst->inject.prog = prog;
|
|
tst->inject.err_code = err;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void upload_err_inject_prog(struct test_firmware_upload *tst,
|
|
const u8 *p)
|
|
{
|
|
static const char * const progs[] = {
|
|
"preparing:", "transferring:", "programming:"
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(progs); i++) {
|
|
if (strncmp(p, progs[i], strlen(progs[i])) == 0) {
|
|
upload_err_inject_error(tst, p + strlen(progs[i]),
|
|
progs[i]);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
#define FIVE_MINUTES_MS (5 * 60 * 1000)
|
|
static enum fw_upload_err
|
|
fw_upload_wait_on_cancel(struct test_firmware_upload *tst)
|
|
{
|
|
int ms_delay;
|
|
|
|
for (ms_delay = 0; ms_delay < FIVE_MINUTES_MS; ms_delay += 100) {
|
|
msleep(100);
|
|
if (tst->cancel_request)
|
|
return FW_UPLOAD_ERR_CANCELED;
|
|
}
|
|
return FW_UPLOAD_ERR_NONE;
|
|
}
|
|
|
|
static enum fw_upload_err test_fw_upload_prepare(struct fw_upload *fwl,
|
|
const u8 *data, u32 size)
|
|
{
|
|
struct test_firmware_upload *tst = fwl->dd_handle;
|
|
enum fw_upload_err ret = FW_UPLOAD_ERR_NONE;
|
|
const char *progress = "preparing:";
|
|
|
|
tst->cancel_request = false;
|
|
|
|
if (!size || size > TEST_UPLOAD_MAX_SIZE) {
|
|
ret = FW_UPLOAD_ERR_INVALID_SIZE;
|
|
goto err_out;
|
|
}
|
|
|
|
if (strncmp(data, "inject:", strlen("inject:")) == 0)
|
|
upload_err_inject_prog(tst, data + strlen("inject:"));
|
|
|
|
memset(tst->buf, 0, TEST_UPLOAD_MAX_SIZE);
|
|
tst->size = size;
|
|
|
|
if (tst->inject.err_code == FW_UPLOAD_ERR_NONE ||
|
|
strncmp(tst->inject.prog, progress, strlen(progress)) != 0)
|
|
return FW_UPLOAD_ERR_NONE;
|
|
|
|
if (tst->inject.err_code == FW_UPLOAD_ERR_CANCELED)
|
|
ret = fw_upload_wait_on_cancel(tst);
|
|
else
|
|
ret = tst->inject.err_code;
|
|
|
|
err_out:
|
|
/*
|
|
* The cleanup op only executes if the prepare op succeeds.
|
|
* If the prepare op fails, it must do it's own clean-up.
|
|
*/
|
|
tst->inject.err_code = FW_UPLOAD_ERR_NONE;
|
|
tst->inject.prog = NULL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static enum fw_upload_err test_fw_upload_write(struct fw_upload *fwl,
|
|
const u8 *data, u32 offset,
|
|
u32 size, u32 *written)
|
|
{
|
|
struct test_firmware_upload *tst = fwl->dd_handle;
|
|
const char *progress = "transferring:";
|
|
u32 blk_size;
|
|
|
|
if (tst->cancel_request)
|
|
return FW_UPLOAD_ERR_CANCELED;
|
|
|
|
blk_size = min_t(u32, TEST_UPLOAD_BLK_SIZE, size);
|
|
memcpy(tst->buf + offset, data + offset, blk_size);
|
|
|
|
*written = blk_size;
|
|
|
|
if (tst->inject.err_code == FW_UPLOAD_ERR_NONE ||
|
|
strncmp(tst->inject.prog, progress, strlen(progress)) != 0)
|
|
return FW_UPLOAD_ERR_NONE;
|
|
|
|
if (tst->inject.err_code == FW_UPLOAD_ERR_CANCELED)
|
|
return fw_upload_wait_on_cancel(tst);
|
|
|
|
return tst->inject.err_code;
|
|
}
|
|
|
|
static enum fw_upload_err test_fw_upload_complete(struct fw_upload *fwl)
|
|
{
|
|
struct test_firmware_upload *tst = fwl->dd_handle;
|
|
const char *progress = "programming:";
|
|
|
|
if (tst->cancel_request)
|
|
return FW_UPLOAD_ERR_CANCELED;
|
|
|
|
if (tst->inject.err_code == FW_UPLOAD_ERR_NONE ||
|
|
strncmp(tst->inject.prog, progress, strlen(progress)) != 0)
|
|
return FW_UPLOAD_ERR_NONE;
|
|
|
|
if (tst->inject.err_code == FW_UPLOAD_ERR_CANCELED)
|
|
return fw_upload_wait_on_cancel(tst);
|
|
|
|
return tst->inject.err_code;
|
|
}
|
|
|
|
static void test_fw_upload_cancel(struct fw_upload *fwl)
|
|
{
|
|
struct test_firmware_upload *tst = fwl->dd_handle;
|
|
|
|
tst->cancel_request = true;
|
|
}
|
|
|
|
static void test_fw_cleanup(struct fw_upload *fwl)
|
|
{
|
|
struct test_firmware_upload *tst = fwl->dd_handle;
|
|
|
|
tst->inject.err_code = FW_UPLOAD_ERR_NONE;
|
|
tst->inject.prog = NULL;
|
|
}
|
|
|
|
static const struct fw_upload_ops upload_test_ops = {
|
|
.prepare = test_fw_upload_prepare,
|
|
.write = test_fw_upload_write,
|
|
.poll_complete = test_fw_upload_complete,
|
|
.cancel = test_fw_upload_cancel,
|
|
.cleanup = test_fw_cleanup
|
|
};
|
|
|
|
static ssize_t upload_register_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct test_firmware_upload *tst;
|
|
struct fw_upload *fwl;
|
|
char *name;
|
|
int ret;
|
|
|
|
name = kstrndup(buf, count, GFP_KERNEL);
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
tst = upload_lookup_name(name);
|
|
if (tst) {
|
|
ret = -EEXIST;
|
|
goto free_name;
|
|
}
|
|
|
|
tst = kzalloc(sizeof(*tst), GFP_KERNEL);
|
|
if (!tst) {
|
|
ret = -ENOMEM;
|
|
goto free_name;
|
|
}
|
|
|
|
tst->name = name;
|
|
tst->buf = kzalloc(TEST_UPLOAD_MAX_SIZE, GFP_KERNEL);
|
|
if (!tst->buf) {
|
|
ret = -ENOMEM;
|
|
goto free_tst;
|
|
}
|
|
|
|
fwl = firmware_upload_register(THIS_MODULE, dev, tst->name,
|
|
&upload_test_ops, tst);
|
|
if (IS_ERR(fwl)) {
|
|
ret = PTR_ERR(fwl);
|
|
goto free_buf;
|
|
}
|
|
|
|
tst->fwl = fwl;
|
|
list_add_tail(&tst->node, &test_upload_list);
|
|
mutex_unlock(&test_fw_mutex);
|
|
return count;
|
|
|
|
free_buf:
|
|
kfree(tst->buf);
|
|
|
|
free_tst:
|
|
kfree(tst);
|
|
|
|
free_name:
|
|
mutex_unlock(&test_fw_mutex);
|
|
kfree(name);
|
|
|
|
return ret;
|
|
}
|
|
static DEVICE_ATTR_WO(upload_register);
|
|
|
|
static ssize_t upload_unregister_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct test_firmware_upload *tst;
|
|
int ret = count;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
tst = upload_lookup_name(buf);
|
|
if (!tst) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (test_fw_config->upload_name == tst->name)
|
|
test_fw_config->upload_name = NULL;
|
|
|
|
list_del(&tst->node);
|
|
upload_release(tst);
|
|
|
|
out:
|
|
mutex_unlock(&test_fw_mutex);
|
|
return ret;
|
|
}
|
|
static DEVICE_ATTR_WO(upload_unregister);
|
|
|
|
static ssize_t test_result_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return test_dev_config_show_int(buf, test_fw_config->test_result);
|
|
}
|
|
static DEVICE_ATTR_RO(test_result);
|
|
|
|
static ssize_t release_all_firmware_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
test_release_all_firmware();
|
|
return count;
|
|
}
|
|
static DEVICE_ATTR_WO(release_all_firmware);
|
|
|
|
static ssize_t read_firmware_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct test_batched_req *req;
|
|
u8 idx;
|
|
ssize_t rc = 0;
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
|
|
idx = test_fw_config->read_fw_idx;
|
|
if (idx >= test_fw_config->num_requests) {
|
|
rc = -ERANGE;
|
|
goto out;
|
|
}
|
|
|
|
if (!test_fw_config->reqs) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
req = &test_fw_config->reqs[idx];
|
|
if (!req->fw) {
|
|
pr_err("#%u: failed to async load firmware\n", idx);
|
|
rc = -ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
pr_info("#%u: loaded %zu\n", idx, req->fw->size);
|
|
|
|
if (req->fw->size > PAGE_SIZE) {
|
|
pr_err("Testing interface must use PAGE_SIZE firmware for now\n");
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
memcpy(buf, req->fw->data, req->fw->size);
|
|
|
|
rc = req->fw->size;
|
|
out:
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
return rc;
|
|
}
|
|
static DEVICE_ATTR_RO(read_firmware);
|
|
|
|
static ssize_t upload_read_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct test_firmware_upload *tst = NULL;
|
|
struct test_firmware_upload *tst_iter;
|
|
int ret = -EINVAL;
|
|
|
|
if (!test_fw_config->upload_name) {
|
|
pr_err("Set config_upload_name before using upload_read\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_lock(&test_fw_mutex);
|
|
list_for_each_entry(tst_iter, &test_upload_list, node)
|
|
if (tst_iter->name == test_fw_config->upload_name) {
|
|
tst = tst_iter;
|
|
break;
|
|
}
|
|
|
|
if (!tst) {
|
|
pr_err("Firmware name not found: %s\n",
|
|
test_fw_config->upload_name);
|
|
goto out;
|
|
}
|
|
|
|
if (tst->size > PAGE_SIZE) {
|
|
pr_err("Testing interface must use PAGE_SIZE firmware for now\n");
|
|
goto out;
|
|
}
|
|
|
|
memcpy(buf, tst->buf, tst->size);
|
|
ret = tst->size;
|
|
out:
|
|
mutex_unlock(&test_fw_mutex);
|
|
return ret;
|
|
}
|
|
static DEVICE_ATTR_RO(upload_read);
|
|
|
|
#define TEST_FW_DEV_ATTR(name) &dev_attr_##name.attr
|
|
|
|
static struct attribute *test_dev_attrs[] = {
|
|
TEST_FW_DEV_ATTR(reset),
|
|
|
|
TEST_FW_DEV_ATTR(config),
|
|
TEST_FW_DEV_ATTR(config_name),
|
|
TEST_FW_DEV_ATTR(config_num_requests),
|
|
TEST_FW_DEV_ATTR(config_into_buf),
|
|
TEST_FW_DEV_ATTR(config_buf_size),
|
|
TEST_FW_DEV_ATTR(config_file_offset),
|
|
TEST_FW_DEV_ATTR(config_partial),
|
|
TEST_FW_DEV_ATTR(config_sync_direct),
|
|
TEST_FW_DEV_ATTR(config_send_uevent),
|
|
TEST_FW_DEV_ATTR(config_read_fw_idx),
|
|
TEST_FW_DEV_ATTR(config_upload_name),
|
|
|
|
/* These don't use the config at all - they could be ported! */
|
|
TEST_FW_DEV_ATTR(trigger_request),
|
|
TEST_FW_DEV_ATTR(trigger_async_request),
|
|
TEST_FW_DEV_ATTR(trigger_custom_fallback),
|
|
#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
|
|
TEST_FW_DEV_ATTR(trigger_request_platform),
|
|
#endif
|
|
|
|
/* These use the config and can use the test_result */
|
|
TEST_FW_DEV_ATTR(trigger_batched_requests),
|
|
TEST_FW_DEV_ATTR(trigger_batched_requests_async),
|
|
|
|
TEST_FW_DEV_ATTR(release_all_firmware),
|
|
TEST_FW_DEV_ATTR(test_result),
|
|
TEST_FW_DEV_ATTR(read_firmware),
|
|
TEST_FW_DEV_ATTR(upload_read),
|
|
TEST_FW_DEV_ATTR(upload_register),
|
|
TEST_FW_DEV_ATTR(upload_unregister),
|
|
NULL,
|
|
};
|
|
|
|
ATTRIBUTE_GROUPS(test_dev);
|
|
|
|
static struct miscdevice test_fw_misc_device = {
|
|
.minor = MISC_DYNAMIC_MINOR,
|
|
.name = "test_firmware",
|
|
.fops = &test_fw_fops,
|
|
.groups = test_dev_groups,
|
|
};
|
|
|
|
static int __init test_firmware_init(void)
|
|
{
|
|
int rc;
|
|
|
|
test_fw_config = kzalloc(sizeof(struct test_config), GFP_KERNEL);
|
|
if (!test_fw_config)
|
|
return -ENOMEM;
|
|
|
|
rc = __test_firmware_config_init();
|
|
if (rc) {
|
|
kfree(test_fw_config);
|
|
pr_err("could not init firmware test config: %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = misc_register(&test_fw_misc_device);
|
|
if (rc) {
|
|
__test_firmware_config_free();
|
|
kfree(test_fw_config);
|
|
pr_err("could not register misc device: %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
pr_warn("interface ready\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
module_init(test_firmware_init);
|
|
|
|
static void __exit test_firmware_exit(void)
|
|
{
|
|
mutex_lock(&test_fw_mutex);
|
|
release_firmware(test_firmware);
|
|
misc_deregister(&test_fw_misc_device);
|
|
upload_release_all();
|
|
__test_firmware_config_free();
|
|
kfree(test_fw_config);
|
|
mutex_unlock(&test_fw_mutex);
|
|
|
|
pr_warn("removed interface\n");
|
|
}
|
|
|
|
module_exit(test_firmware_exit);
|
|
|
|
MODULE_AUTHOR("Kees Cook <keescook@chromium.org>");
|
|
MODULE_LICENSE("GPL");
|