[PATCH v10 05/10] test_firmware: add support for firmware_request_platform

From: Hans de Goede <hdegoede@redhat.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Darren Hart <dvhart@infradead.org>,
	Andy Shevchenko <andy@infradead.org>,
	Luis Chamberlain <mcgrof@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	"H . Peter Anvin" <hpa@zytor.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Hans de Goede <hdegoede@redhat.com>,
	Peter Jones <pjones@redhat.com>, Dave Olsthoorn <dave@bewaar.me>,
	x86@kernel.org, platform-driver-x86@vger.kernel.org,
	linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-input@vger.kernel.org
Subject: [PATCH v10 05/10] test_firmware: add support for firmware_request_platform
Date: Tue, 10 Dec 2019 12:51:12 +0100	[thread overview]
Message-ID: <20191210115117.303935-6-hdegoede@redhat.com> (raw)
In-Reply-To: <20191210115117.303935-1-hdegoede@redhat.com>

Add support for testing firmware_request_platform through a new
trigger_request_platform trigger.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 lib/test_firmware.c | 68 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index 251213c872b5..9af00cfc8979 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -24,6 +24,7 @@
 #include <linux/delay.h>
 #include <linux/kthread.h>
 #include <linux/vmalloc.h>
+#include <linux/efi_embedded_fw.h>
 
 #define TEST_FIRMWARE_NAME	"test-firmware.bin"
 #define TEST_FIRMWARE_NUM_REQS	4
@@ -507,12 +508,76 @@ static ssize_t trigger_request_store(struct device *dev,
 }
 static DEVICE_ATTR_WO(trigger_request);
 
+#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
+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 fw;
+	int rc;
+	char *name;
+
+	name = kstrndup(buf, count, GFP_KERNEL);
+	if (!name)
+		return -ENOSPC;
+
+	pr_info("inserting test platform fw '%s'\n", name);
+	fw.name = name;
+	fw.data = (void *)test_data;
+	fw.length = sizeof(test_data);
+	list_add(&fw.list, &efi_embedded_fw_list);
+
+	pr_info("loading '%s'\n", name);
+
+	mutex_lock(&test_fw_mutex);
+	release_firmware(test_firmware);
+	test_firmware = NULL;
+	rc = firmware_request_platform(&test_firmware, name, dev);
+	if (rc) {
+		pr_info("load of '%s' failed: %d\n", name, rc);
+		goto out;
+	}
+	if (test_firmware->size != sizeof(test_data) ||
+	    memcmp(test_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", test_firmware->size);
+	rc = count;
+
+out:
+	mutex_unlock(&test_fw_mutex);
+
+	list_del(&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,
@@ -903,6 +968,9 @@ static struct attribute *test_dev_attrs[] = {
 	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),
-- 
2.23.0

