[PATCH 1/3] test_firmware: add support for request_firmware_into_buf

Scott Branden
2019-08-16T00:09:59Z

Add test config into_buf to allow request_firmware_into_buf to be
called instead of request_firmware/request_firmware_direct. The number
of parameters differ calling request_firmware_into_buf and support
has not been added to test such api in test_firmware until now.

Signed-off-by: Scott Branden <scott.branden@broadcom.com>
---
lib/test_firmware.c | 50 +++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 48 insertions(+), 2 deletions(-)

diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index 6ca97a63b3d6..1aa430228ae6 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -18,6 +18,7 @@
#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>
@@ -26,6 +27,7 @@

#define TEST_FIRMWARE_NAME "test-firmware.bin"
#define TEST_FIRMWARE_NUM_REQS 4
+#define TEST_FIRMWARE_BUF_SIZE SZ_1K

static DEFINE_MUTEX(test_fw_mutex);
static const struct firmware *test_firmware;
@@ -45,6 +47,8 @@ struct test_batched_req {
* 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.
* @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
@@ -83,6 +87,7 @@ struct test_batched_req {
*/
struct test_config {
char *name;
+ bool into_buf;
bool sync_direct;
bool send_uevent;
u8 num_requests;
@@ -176,6 +181,7 @@ static int __test_firmware_config_init(void)

test_fw_config->num_requests = TEST_FIRMWARE_NUM_REQS;
test_fw_config->send_uevent = true;
+ test_fw_config->into_buf = false;
test_fw_config->sync_direct = false;
test_fw_config->req_firmware = request_firmware;
test_fw_config->test_result = 0;
@@ -244,6 +250,9 @@ static ssize_t config_show(struct device *dev,
test_fw_config->send_uevent ?
"FW_ACTION_HOTPLUG" :
"FW_ACTION_NOHOTPLUG");
+ 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,
"sync_direct:\t\t%s\n",
test_fw_config->sync_direct ? "true" : "false");
@@ -393,6 +402,23 @@ static ssize_t config_num_requests_show(struct device *dev,
}
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_sync_direct_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@@ -522,7 +548,7 @@ static ssize_t trigger_async_request_store(struct device *dev,
rc = count;
} else {
pr_err("failed to async load firmware\n");
- rc = -ENODEV;
+ rc = -ENOMEM;
}

out:
@@ -585,7 +611,26 @@ static int test_fw_run_batch_request(void *data)
return -EINVAL;
}

- req->rc = test_fw_config->req_firmware(&req->fw, req->name, req->dev);
+ if (test_fw_config->into_buf) {
+ void *test_buf;
+
+ test_buf = kzalloc(TEST_FIRMWARE_BUF_SIZE, GFP_KERNEL);
+ if (!test_buf)
+ return -ENOSPC;
+
+ req->rc = request_firmware_into_buf(&req->fw,
+ req->name,
+ req->dev,
+ test_buf,
+ TEST_FIRMWARE_BUF_SIZE);
+ if (!req->fw)
+ kfree(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);
@@ -849,6 +894,7 @@ static struct attribute *test_dev_attrs[] = {
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_sync_direct),
TEST_FW_DEV_ATTR(config_send_uevent),
TEST_FW_DEV_ATTR(config_read_fw_idx),
--
2.17.1