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@@ -19,10 +19,85 @@
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#include <linux/miscdevice.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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+#include <linux/delay.h>
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+#include <linux/kthread.h>
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+
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+#define TEST_FIRMWARE_NAME "test-firmware.bin"
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+#define TEST_FIRMWARE_NUM_REQS 4
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static DEFINE_MUTEX(test_fw_mutex);
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static const struct firmware *test_firmware;
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+struct test_batched_req {
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+ u8 idx;
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+ int rc;
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+ bool sent;
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+ const struct firmware *fw;
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+ const char *name;
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+ struct completion completion;
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+ struct task_struct *task;
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+ struct device *dev;
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+};
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+
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+/**
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+ * test_config - represents configuration for the test for different triggers
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+ *
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+ * @name: the name of the firmware file to look for
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+ * @sync_direct: when the sync trigger is used if this is true
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+ * request_firmware_direct() will be used instead.
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+ * @send_uevent: whether or not to send a uevent for async requests
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+ * @num_requests: number of requests to try per test case. This is trigger
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+ * specific.
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+ * @reqs: stores all requests information
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+ * @read_fw_idx: index of thread from which we want to read firmware results
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+ * from through the read_fw trigger.
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+ * @test_result: a test may use this to collect the result from the call
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+ * of the request_firmware*() calls used in their tests. In order of
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+ * priority we always keep first any setup error. If no setup errors were
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+ * found then we move on to the first error encountered while running the
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+ * API. Note that for async calls this typically will be a successful
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+ * result (0) unless of course you've used bogus parameters, or the system
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+ * is out of memory. In the async case the callback is expected to do a
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+ * bit more homework to figure out what happened, unfortunately the only
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+ * information passed today on error is the fact that no firmware was
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+ * found so we can only assume -ENOENT on async calls if the firmware is
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+ * NULL.
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+ *
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+ * Errors you can expect:
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+ *
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+ * API specific:
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+ *
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+ * 0: success for sync, for async it means request was sent
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+ * -EINVAL: invalid parameters or request
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+ * -ENOENT: files not found
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+ *
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+ * System environment:
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+ *
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+ * -ENOMEM: memory pressure on system
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+ * -ENODEV: out of number of devices to test
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+ * -EINVAL: an unexpected error has occurred
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+ * @req_firmware: if @sync_direct is true this is set to
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+ * request_firmware_direct(), otherwise request_firmware()
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+ */
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+struct test_config {
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+ char *name;
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+ bool sync_direct;
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+ bool send_uevent;
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+ u8 num_requests;
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+ u8 read_fw_idx;
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+
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+ /*
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+ * These below don't belong her but we'll move them once we create
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+ * a struct fw_test_device and stuff the misc_dev under there later.
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+ */
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+ struct test_batched_req *reqs;
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+ int test_result;
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+ int (*req_firmware)(const struct firmware **fw, const char *name,
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+ struct device *device);
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+};
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+
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+struct test_config *test_fw_config;
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+
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static ssize_t test_fw_misc_read(struct file *f, char __user *buf,
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size_t size, loff_t *offset)
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{
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@@ -42,6 +117,338 @@ static const struct file_operations test_fw_fops = {
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.read = test_fw_misc_read,
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};
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+static void __test_release_all_firmware(void)
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+{
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+ struct test_batched_req *req;
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+ u8 i;
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+
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+ if (!test_fw_config->reqs)
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+ return;
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+
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+ for (i = 0; i < test_fw_config->num_requests; i++) {
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+ req = &test_fw_config->reqs[i];
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+ if (req->fw)
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+ release_firmware(req->fw);
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+ }
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+
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+ vfree(test_fw_config->reqs);
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+ test_fw_config->reqs = NULL;
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+}
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+
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+static void test_release_all_firmware(void)
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+{
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+ mutex_lock(&test_fw_mutex);
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+ __test_release_all_firmware();
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+ mutex_unlock(&test_fw_mutex);
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+}
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+
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+
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+static void __test_firmware_config_free(void)
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+{
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+ __test_release_all_firmware();
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+ kfree_const(test_fw_config->name);
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+ test_fw_config->name = NULL;
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+}
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+
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+/*
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+ * XXX: move to kstrncpy() once merged.
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+ *
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+ * Users should use kfree_const() when freeing these.
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+ */
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+static int __kstrncpy(char **dst, const char *name, size_t count, gfp_t gfp)
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+{
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+ *dst = kstrndup(name, count, gfp);
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+ if (!*dst)
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+ return -ENOSPC;
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+ return count;
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+}
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+
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+static int __test_firmware_config_init(void)
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+{
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+ int ret;
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+
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+ ret = __kstrncpy(&test_fw_config->name, TEST_FIRMWARE_NAME,
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+ strlen(TEST_FIRMWARE_NAME), GFP_KERNEL);
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+ if (ret < 0)
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+ goto out;
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+
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+ test_fw_config->num_requests = TEST_FIRMWARE_NUM_REQS;
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+ test_fw_config->send_uevent = true;
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+ test_fw_config->sync_direct = false;
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+ test_fw_config->req_firmware = request_firmware;
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+ test_fw_config->test_result = 0;
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+ test_fw_config->reqs = NULL;
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+
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+ return 0;
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+
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+out:
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+ __test_firmware_config_free();
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+ return ret;
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+}
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+
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+static ssize_t reset_store(struct device *dev,
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+ struct device_attribute *attr,
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+ const char *buf, size_t count)
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+{
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+ int ret;
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+
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+ mutex_lock(&test_fw_mutex);
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+
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+ __test_firmware_config_free();
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+
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+ ret = __test_firmware_config_init();
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+ if (ret < 0) {
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+ ret = -ENOMEM;
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+ pr_err("could not alloc settings for config trigger: %d\n",
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+ ret);
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+ goto out;
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+ }
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+
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+ pr_info("reset\n");
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+ ret = count;
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+
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+out:
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+ mutex_unlock(&test_fw_mutex);
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+
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+ return ret;
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+}
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+static DEVICE_ATTR_WO(reset);
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+
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+static ssize_t config_show(struct device *dev,
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+ struct device_attribute *attr,
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+ char *buf)
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+{
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+ int len = 0;
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+
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+ mutex_lock(&test_fw_mutex);
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+
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+ len += snprintf(buf, PAGE_SIZE,
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+ "Custom trigger configuration for: %s\n",
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+ dev_name(dev));
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+
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+ if (test_fw_config->name)
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+ len += snprintf(buf+len, PAGE_SIZE,
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+ "name:\t%s\n",
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+ test_fw_config->name);
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+ else
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+ len += snprintf(buf+len, PAGE_SIZE,
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+ "name:\tEMTPY\n");
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+
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+ len += snprintf(buf+len, PAGE_SIZE,
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+ "num_requests:\t%u\n", test_fw_config->num_requests);
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+
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+ len += snprintf(buf+len, PAGE_SIZE,
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+ "send_uevent:\t\t%s\n",
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+ test_fw_config->send_uevent ?
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+ "FW_ACTION_HOTPLUG" :
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+ "FW_ACTION_NOHOTPLUG");
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+ len += snprintf(buf+len, PAGE_SIZE,
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+ "sync_direct:\t\t%s\n",
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+ test_fw_config->sync_direct ? "true" : "false");
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+ len += snprintf(buf+len, PAGE_SIZE,
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+ "read_fw_idx:\t%u\n", test_fw_config->read_fw_idx);
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+
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+ mutex_unlock(&test_fw_mutex);
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+
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+ return len;
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+}
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+static DEVICE_ATTR_RO(config);
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+
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+static ssize_t config_name_store(struct device *dev,
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+ struct device_attribute *attr,
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+ const char *buf, size_t count)
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+{
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+ int ret;
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+
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+ mutex_lock(&test_fw_mutex);
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+ kfree_const(test_fw_config->name);
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+ ret = __kstrncpy(&test_fw_config->name, buf, count, GFP_KERNEL);
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+ mutex_unlock(&test_fw_mutex);
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+
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+ return ret;
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+}
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+
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+/*
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+ * As per sysfs_kf_seq_show() the buf is max PAGE_SIZE.
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+ */
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+static ssize_t config_test_show_str(char *dst,
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+ char *src)
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+{
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+ int len;
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+
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+ mutex_lock(&test_fw_mutex);
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+ len = snprintf(dst, PAGE_SIZE, "%s\n", src);
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+ mutex_unlock(&test_fw_mutex);
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+
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+ return len;
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+}
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+
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+static int test_dev_config_update_bool(const char *buf, size_t size,
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+ bool *cfg)
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+{
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+ int ret;
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+
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+ mutex_lock(&test_fw_mutex);
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+ if (strtobool(buf, cfg) < 0)
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+ ret = -EINVAL;
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+ else
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+ ret = size;
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+ mutex_unlock(&test_fw_mutex);
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+
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+ return ret;
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+}
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+
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+static ssize_t
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+test_dev_config_show_bool(char *buf,
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+ bool config)
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+{
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+ bool val;
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+
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+ mutex_lock(&test_fw_mutex);
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+ val = config;
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+ mutex_unlock(&test_fw_mutex);
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+
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+ return snprintf(buf, PAGE_SIZE, "%d\n", val);
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+}
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+
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+static ssize_t test_dev_config_show_int(char *buf, int cfg)
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+{
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+ int val;
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+
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+ mutex_lock(&test_fw_mutex);
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+ val = cfg;
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+ mutex_unlock(&test_fw_mutex);
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+
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+ return snprintf(buf, PAGE_SIZE, "%d\n", val);
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+}
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+
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+static int test_dev_config_update_u8(const char *buf, size_t size, u8 *cfg)
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+{
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+ int ret;
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+ long new;
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+
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+ ret = kstrtol(buf, 10, &new);
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+ if (ret)
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+ return ret;
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+
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+ if (new > U8_MAX)
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+ return -EINVAL;
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+
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+ mutex_lock(&test_fw_mutex);
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+ *(u8 *)cfg = new;
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+ mutex_unlock(&test_fw_mutex);
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+
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+ /* Always return full write size even if we didn't consume all */
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+ return size;
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+}
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+
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+static ssize_t test_dev_config_show_u8(char *buf, u8 cfg)
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+{
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+ u8 val;
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+
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+ mutex_lock(&test_fw_mutex);
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+ val = cfg;
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+ mutex_unlock(&test_fw_mutex);
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+
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+ return snprintf(buf, PAGE_SIZE, "%u\n", val);
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+}
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+
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+static ssize_t config_name_show(struct device *dev,
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+ struct device_attribute *attr,
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+ char *buf)
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+{
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+ return config_test_show_str(buf, test_fw_config->name);
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+}
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+static DEVICE_ATTR(config_name, 0644, config_name_show, config_name_store);
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+
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+static ssize_t config_num_requests_store(struct device *dev,
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+ struct device_attribute *attr,
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+ const char *buf, size_t count)
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+{
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+ int rc;
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+
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+ mutex_lock(&test_fw_mutex);
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+ if (test_fw_config->reqs) {
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+ pr_err("Must call release_all_firmware prior to changing config\n");
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+ rc = -EINVAL;
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+ goto out;
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+ }
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+ mutex_unlock(&test_fw_mutex);
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+
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+ rc = test_dev_config_update_u8(buf, count,
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+ &test_fw_config->num_requests);
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+
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+out:
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+ return rc;
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+}
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+
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+static ssize_t config_num_requests_show(struct device *dev,
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+ struct device_attribute *attr,
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+ char *buf)
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+{
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+ return test_dev_config_show_u8(buf, test_fw_config->num_requests);
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+}
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+static DEVICE_ATTR(config_num_requests, 0644, config_num_requests_show,
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+ config_num_requests_store);
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+
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+static ssize_t config_sync_direct_store(struct device *dev,
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+ struct device_attribute *attr,
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+ const char *buf, size_t count)
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+{
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+ int rc = test_dev_config_update_bool(buf, count,
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+ &test_fw_config->sync_direct);
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+
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+ if (rc == count)
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+ test_fw_config->req_firmware = test_fw_config->sync_direct ?
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+ request_firmware_direct :
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+ request_firmware;
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+ return rc;
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+}
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+
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+static ssize_t config_sync_direct_show(struct device *dev,
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+ struct device_attribute *attr,
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+ char *buf)
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+{
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+ return test_dev_config_show_bool(buf, test_fw_config->sync_direct);
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+}
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+static DEVICE_ATTR(config_sync_direct, 0644, config_sync_direct_show,
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+ config_sync_direct_store);
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+
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+static ssize_t config_send_uevent_store(struct device *dev,
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+ struct device_attribute *attr,
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+ const char *buf, size_t count)
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+{
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+ return test_dev_config_update_bool(buf, count,
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+ &test_fw_config->send_uevent);
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+}
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+
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+static ssize_t config_send_uevent_show(struct device *dev,
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+ struct device_attribute *attr,
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+ char *buf)
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+{
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+ return test_dev_config_show_bool(buf, test_fw_config->send_uevent);
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+}
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+static DEVICE_ATTR(config_send_uevent, 0644, config_send_uevent_show,
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+ config_send_uevent_store);
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+
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+static ssize_t config_read_fw_idx_store(struct device *dev,
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+ struct device_attribute *attr,
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+ const char *buf, size_t count)
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+{
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+ return test_dev_config_update_u8(buf, count,
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+ &test_fw_config->read_fw_idx);
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+}
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+
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+static ssize_t config_read_fw_idx_show(struct device *dev,
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+ struct device_attribute *attr,
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+ char *buf)
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+{
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+ return test_dev_config_show_u8(buf, test_fw_config->read_fw_idx);
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+}
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+static DEVICE_ATTR(config_read_fw_idx, 0644, config_read_fw_idx_show,
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+ config_read_fw_idx_store);
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+
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+
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static ssize_t trigger_request_store(struct device *dev,
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struct device_attribute *attr,
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|
const char *buf, size_t count)
|
|
|
@@ -170,12 +577,301 @@ out:
|
|
|
}
|
|
|
static DEVICE_ATTR_WO(trigger_custom_fallback);
|
|
|
|
|
|
+static int test_fw_run_batch_request(void *data)
|
|
|
+{
|
|
|
+ struct test_batched_req *req = data;
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|
|
+
|
|
|
+ if (!req) {
|
|
|
+ test_fw_config->test_result = -EINVAL;
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ 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
|
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|
+ * 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);
|
|
|
+
|
|
|
+ test_fw_config->reqs = vzalloc(sizeof(struct test_batched_req) *
|
|
|
+ test_fw_config->num_requests * 2);
|
|
|
+ if (!test_fw_config->reqs) {
|
|
|
+ rc = -ENOMEM;
|
|
|
+ goto out_unlock;
|
|
|
+ }
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|
|
+
|
|
|
+ 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];
|
|
|
+ if (!req) {
|
|
|
+ WARN_ON(1);
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|
|
+ rc = -ENOMEM;
|
|
|
+ goto out_bail;
|
|
|
+ }
|
|
|
+ req->fw = NULL;
|
|
|
+ req->idx = i;
|
|
|
+ req->name = test_fw_config->name;
|
|
|
+ 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);
|
|
|
+
|
|
|
+ test_fw_config->reqs = vzalloc(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_HOTPLUG :
|
|
|
+ FW_ACTION_NOHOTPLUG;
|
|
|
+
|
|
|
+ for (i = 0; i < test_fw_config->num_requests; i++) {
|
|
|
+ req = &test_fw_config->reqs[i];
|
|
|
+ if (!req) {
|
|
|
+ WARN_ON(1);
|
|
|
+ goto out_bail;
|
|
|
+ }
|
|
|
+ req->name = test_fw_config->name;
|
|
|
+ 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 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;
|
|
|
+ }
|
|
|
+ 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);
|
|
|
+
|
|
|
#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_sync_direct),
|
|
|
+ TEST_FW_DEV_ATTR(config_send_uevent),
|
|
|
+ TEST_FW_DEV_ATTR(config_read_fw_idx),
|
|
|
+
|
|
|
+ /* 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),
|
|
|
+
|
|
|
+ /* 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),
|
|
|
NULL,
|
|
|
};
|
|
|
|
|
|
@@ -192,8 +888,17 @@ 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)
|
|
|
+ return rc;
|
|
|
+
|
|
|
rc = misc_register(&test_fw_misc_device);
|
|
|
if (rc) {
|
|
|
+ kfree(test_fw_config);
|
|
|
pr_err("could not register misc device: %d\n", rc);
|
|
|
return rc;
|
|
|
}
|
|
|
@@ -207,8 +912,13 @@ 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);
|
|
|
+ __test_firmware_config_free();
|
|
|
+ kfree(test_fw_config);
|
|
|
+ mutex_unlock(&test_fw_mutex);
|
|
|
+
|
|
|
pr_warn("removed interface\n");
|
|
|
}
|
|
|
|
Linus Torvalds