^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * This module provides an interface to trigger and test firmware loading.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * It is designed to be used for basic evaluation of the firmware loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * subsystem (for example when validating firmware verification). It lacks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * any extra dependencies, and will not normally be loaded by the system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * unless explicitly requested by name.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/printk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/firmware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/miscdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/sizes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/vmalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/efi_embedded_fw.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) MODULE_IMPORT_NS(TEST_FIRMWARE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define TEST_FIRMWARE_NAME "test-firmware.bin"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define TEST_FIRMWARE_NUM_REQS 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define TEST_FIRMWARE_BUF_SIZE SZ_1K
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static DEFINE_MUTEX(test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static const struct firmware *test_firmware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct test_batched_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) u8 idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) bool sent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) const struct firmware *fw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct completion completion;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct task_struct *task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * test_config - represents configuration for the test for different triggers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * @name: the name of the firmware file to look for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * @into_buf: when the into_buf is used if this is true
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * request_firmware_into_buf() will be used instead.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * @buf_size: size of buf to allocate when into_buf is true
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * @file_offset: file offset to request when calling request_firmware_into_buf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * @partial: partial read opt when calling request_firmware_into_buf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * @sync_direct: when the sync trigger is used if this is true
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * request_firmware_direct() will be used instead.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * @send_uevent: whether or not to send a uevent for async requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * @num_requests: number of requests to try per test case. This is trigger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * specific.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * @reqs: stores all requests information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * @read_fw_idx: index of thread from which we want to read firmware results
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * from through the read_fw trigger.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * @test_result: a test may use this to collect the result from the call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * of the request_firmware*() calls used in their tests. In order of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * priority we always keep first any setup error. If no setup errors were
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * found then we move on to the first error encountered while running the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * API. Note that for async calls this typically will be a successful
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * result (0) unless of course you've used bogus parameters, or the system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * is out of memory. In the async case the callback is expected to do a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * bit more homework to figure out what happened, unfortunately the only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * information passed today on error is the fact that no firmware was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * found so we can only assume -ENOENT on async calls if the firmware is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * Errors you can expect:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * API specific:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * 0: success for sync, for async it means request was sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * -EINVAL: invalid parameters or request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * -ENOENT: files not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * System environment:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * -ENOMEM: memory pressure on system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * -ENODEV: out of number of devices to test
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * -EINVAL: an unexpected error has occurred
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * @req_firmware: if @sync_direct is true this is set to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * request_firmware_direct(), otherwise request_firmware()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct test_config {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) bool into_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) size_t buf_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) size_t file_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) bool partial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) bool sync_direct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) bool send_uevent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) u8 num_requests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) u8 read_fw_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * These below don't belong her but we'll move them once we create
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * a struct fw_test_device and stuff the misc_dev under there later.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct test_batched_req *reqs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int test_result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) int (*req_firmware)(const struct firmware **fw, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct device *device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static struct test_config *test_fw_config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static ssize_t test_fw_misc_read(struct file *f, char __user *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) size_t size, loff_t *offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) ssize_t rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (test_firmware)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) rc = simple_read_from_buffer(buf, size, offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) test_firmware->data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) test_firmware->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static const struct file_operations test_fw_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .read = test_fw_misc_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static void __test_release_all_firmware(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) struct test_batched_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) u8 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (!test_fw_config->reqs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) for (i = 0; i < test_fw_config->num_requests; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) req = &test_fw_config->reqs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (req->fw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) release_firmware(req->fw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) vfree(test_fw_config->reqs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) test_fw_config->reqs = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static void test_release_all_firmware(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) __test_release_all_firmware();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static void __test_firmware_config_free(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) __test_release_all_firmware();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) kfree_const(test_fw_config->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) test_fw_config->name = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * XXX: move to kstrncpy() once merged.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * Users should use kfree_const() when freeing these.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static int __kstrncpy(char **dst, const char *name, size_t count, gfp_t gfp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) *dst = kstrndup(name, count, gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (!*dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static int __test_firmware_config_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) ret = __kstrncpy(&test_fw_config->name, TEST_FIRMWARE_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) strlen(TEST_FIRMWARE_NAME), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) test_fw_config->num_requests = TEST_FIRMWARE_NUM_REQS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) test_fw_config->send_uevent = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) test_fw_config->into_buf = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) test_fw_config->buf_size = TEST_FIRMWARE_BUF_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) test_fw_config->file_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) test_fw_config->partial = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) test_fw_config->sync_direct = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) test_fw_config->req_firmware = request_firmware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) test_fw_config->test_result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) test_fw_config->reqs = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) __test_firmware_config_free();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) static ssize_t reset_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) __test_firmware_config_free();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) ret = __test_firmware_config_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) pr_err("could not alloc settings for config trigger: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) pr_info("reset\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ret = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static DEVICE_ATTR_WO(reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) static ssize_t config_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) int len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) len += scnprintf(buf, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) "Custom trigger configuration for: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) dev_name(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (test_fw_config->name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) len += scnprintf(buf + len, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) "name:\t%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) test_fw_config->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) len += scnprintf(buf + len, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) "name:\tEMTPY\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) len += scnprintf(buf + len, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) "num_requests:\t%u\n", test_fw_config->num_requests);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) len += scnprintf(buf + len, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) "send_uevent:\t\t%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) test_fw_config->send_uevent ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) "FW_ACTION_HOTPLUG" :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) "FW_ACTION_NOHOTPLUG");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) len += scnprintf(buf + len, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) "into_buf:\t\t%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) test_fw_config->into_buf ? "true" : "false");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) len += scnprintf(buf + len, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) "buf_size:\t%zu\n", test_fw_config->buf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) len += scnprintf(buf + len, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) "file_offset:\t%zu\n", test_fw_config->file_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) len += scnprintf(buf + len, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) "partial:\t\t%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) test_fw_config->partial ? "true" : "false");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) len += scnprintf(buf + len, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) "sync_direct:\t\t%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) test_fw_config->sync_direct ? "true" : "false");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) len += scnprintf(buf + len, PAGE_SIZE - len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) "read_fw_idx:\t%u\n", test_fw_config->read_fw_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static DEVICE_ATTR_RO(config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static ssize_t config_name_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) kfree_const(test_fw_config->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) ret = __kstrncpy(&test_fw_config->name, buf, count, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) * As per sysfs_kf_seq_show() the buf is max PAGE_SIZE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static ssize_t config_test_show_str(char *dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) char *src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) len = snprintf(dst, PAGE_SIZE, "%s\n", src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) static int test_dev_config_update_bool(const char *buf, size_t size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) bool *cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (strtobool(buf, cfg) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) ret = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) static ssize_t test_dev_config_show_bool(char *buf, bool val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return snprintf(buf, PAGE_SIZE, "%d\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) static int test_dev_config_update_size_t(const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) size_t size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) size_t *cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) long new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) ret = kstrtol(buf, 10, &new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) *(size_t *)cfg = new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /* Always return full write size even if we didn't consume all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) static ssize_t test_dev_config_show_size_t(char *buf, size_t val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return snprintf(buf, PAGE_SIZE, "%zu\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) static ssize_t test_dev_config_show_int(char *buf, int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return snprintf(buf, PAGE_SIZE, "%d\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) static int test_dev_config_update_u8(const char *buf, size_t size, u8 *cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) long new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) ret = kstrtol(buf, 10, &new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (new > U8_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) *(u8 *)cfg = new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /* Always return full write size even if we didn't consume all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) static ssize_t test_dev_config_show_u8(char *buf, u8 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) return snprintf(buf, PAGE_SIZE, "%u\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) static ssize_t config_name_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) return config_test_show_str(buf, test_fw_config->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) static DEVICE_ATTR_RW(config_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) static ssize_t config_num_requests_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (test_fw_config->reqs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) pr_err("Must call release_all_firmware prior to changing config\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) rc = test_dev_config_update_u8(buf, count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) &test_fw_config->num_requests);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) static ssize_t config_num_requests_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) return test_dev_config_show_u8(buf, test_fw_config->num_requests);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) static DEVICE_ATTR_RW(config_num_requests);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) static ssize_t config_into_buf_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) return test_dev_config_update_bool(buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) &test_fw_config->into_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) static ssize_t config_into_buf_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) return test_dev_config_show_bool(buf, test_fw_config->into_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) static DEVICE_ATTR_RW(config_into_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) static ssize_t config_buf_size_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (test_fw_config->reqs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) pr_err("Must call release_all_firmware prior to changing config\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) rc = test_dev_config_update_size_t(buf, count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) &test_fw_config->buf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) static ssize_t config_buf_size_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) return test_dev_config_show_size_t(buf, test_fw_config->buf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) static DEVICE_ATTR_RW(config_buf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) static ssize_t config_file_offset_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) if (test_fw_config->reqs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) pr_err("Must call release_all_firmware prior to changing config\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) rc = test_dev_config_update_size_t(buf, count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) &test_fw_config->file_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) static ssize_t config_file_offset_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) return test_dev_config_show_size_t(buf, test_fw_config->file_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) static DEVICE_ATTR_RW(config_file_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) static ssize_t config_partial_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return test_dev_config_update_bool(buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) &test_fw_config->partial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) static ssize_t config_partial_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) return test_dev_config_show_bool(buf, test_fw_config->partial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) static DEVICE_ATTR_RW(config_partial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) static ssize_t config_sync_direct_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) int rc = test_dev_config_update_bool(buf, count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) &test_fw_config->sync_direct);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (rc == count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) test_fw_config->req_firmware = test_fw_config->sync_direct ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) request_firmware_direct :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) request_firmware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) static ssize_t config_sync_direct_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) return test_dev_config_show_bool(buf, test_fw_config->sync_direct);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) static DEVICE_ATTR_RW(config_sync_direct);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) static ssize_t config_send_uevent_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) return test_dev_config_update_bool(buf, count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) &test_fw_config->send_uevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) static ssize_t config_send_uevent_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) return test_dev_config_show_bool(buf, test_fw_config->send_uevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) static DEVICE_ATTR_RW(config_send_uevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) static ssize_t config_read_fw_idx_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) return test_dev_config_update_u8(buf, count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) &test_fw_config->read_fw_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) static ssize_t config_read_fw_idx_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) return test_dev_config_show_u8(buf, test_fw_config->read_fw_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) static DEVICE_ATTR_RW(config_read_fw_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) static ssize_t trigger_request_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) name = kstrndup(buf, count, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if (!name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) pr_info("loading '%s'\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) release_firmware(test_firmware);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) test_firmware = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) rc = request_firmware(&test_firmware, name, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) pr_info("load of '%s' failed: %d\n", name, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) pr_info("loaded: %zu\n", test_firmware->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) rc = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) kfree(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) static DEVICE_ATTR_WO(trigger_request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) #ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) extern struct list_head efi_embedded_fw_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) extern bool efi_embedded_fw_checked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) static ssize_t trigger_request_platform_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) static const u8 test_data[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) 0x55, 0xaa, 0x55, 0xaa, 0x01, 0x02, 0x03, 0x04,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) 0x55, 0xaa, 0x55, 0xaa, 0x05, 0x06, 0x07, 0x08,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) 0x55, 0xaa, 0x55, 0xaa, 0x10, 0x20, 0x30, 0x40,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) 0x55, 0xaa, 0x55, 0xaa, 0x50, 0x60, 0x70, 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) struct efi_embedded_fw efi_embedded_fw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) const struct firmware *firmware = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) bool saved_efi_embedded_fw_checked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) name = kstrndup(buf, count, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) if (!name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) pr_info("inserting test platform fw '%s'\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) efi_embedded_fw.name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) efi_embedded_fw.data = (void *)test_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) efi_embedded_fw.length = sizeof(test_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) list_add(&efi_embedded_fw.list, &efi_embedded_fw_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) saved_efi_embedded_fw_checked = efi_embedded_fw_checked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) efi_embedded_fw_checked = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) pr_info("loading '%s'\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) rc = firmware_request_platform(&firmware, name, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) pr_info("load of '%s' failed: %d\n", name, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) if (firmware->size != sizeof(test_data) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) memcmp(firmware->data, test_data, sizeof(test_data)) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) pr_info("firmware contents mismatch for '%s'\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) pr_info("loaded: %zu\n", firmware->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) rc = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) efi_embedded_fw_checked = saved_efi_embedded_fw_checked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) release_firmware(firmware);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) list_del(&efi_embedded_fw.list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) kfree(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) static DEVICE_ATTR_WO(trigger_request_platform);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) static DECLARE_COMPLETION(async_fw_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) static void trigger_async_request_cb(const struct firmware *fw, void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) test_firmware = fw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) complete(&async_fw_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) static ssize_t trigger_async_request_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) name = kstrndup(buf, count, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) if (!name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) pr_info("loading '%s'\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) release_firmware(test_firmware);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) test_firmware = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) rc = request_firmware_nowait(THIS_MODULE, 1, name, dev, GFP_KERNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) NULL, trigger_async_request_cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) pr_info("async load of '%s' failed: %d\n", name, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) kfree(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) /* Free 'name' ASAP, to test for race conditions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) kfree(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) wait_for_completion(&async_fw_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) if (test_firmware) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) pr_info("loaded: %zu\n", test_firmware->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) rc = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) pr_err("failed to async load firmware\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) static DEVICE_ATTR_WO(trigger_async_request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) static ssize_t trigger_custom_fallback_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) name = kstrndup(buf, count, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) if (!name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) pr_info("loading '%s' using custom fallback mechanism\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) release_firmware(test_firmware);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) test_firmware = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) rc = request_firmware_nowait(THIS_MODULE, FW_ACTION_NOHOTPLUG, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) dev, GFP_KERNEL, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) trigger_async_request_cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) pr_info("async load of '%s' failed: %d\n", name, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) kfree(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) /* Free 'name' ASAP, to test for race conditions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) kfree(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) wait_for_completion(&async_fw_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) if (test_firmware) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) pr_info("loaded: %zu\n", test_firmware->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) rc = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) pr_err("failed to async load firmware\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) rc = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) static DEVICE_ATTR_WO(trigger_custom_fallback);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) static int test_fw_run_batch_request(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) struct test_batched_req *req = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) if (!req) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) test_fw_config->test_result = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) if (test_fw_config->into_buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) void *test_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) test_buf = kzalloc(TEST_FIRMWARE_BUF_SIZE, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) if (!test_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) if (test_fw_config->partial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) req->rc = request_partial_firmware_into_buf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) (&req->fw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) req->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) req->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) test_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) test_fw_config->buf_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) test_fw_config->file_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) req->rc = request_firmware_into_buf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) (&req->fw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) req->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) req->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) test_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) test_fw_config->buf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) if (!req->fw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) kfree(test_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) req->rc = test_fw_config->req_firmware(&req->fw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) req->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) req->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) if (req->rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) pr_info("#%u: batched sync load failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) req->idx, req->rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) if (!test_fw_config->test_result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) test_fw_config->test_result = req->rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) } else if (req->fw) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) req->sent = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) pr_info("#%u: batched sync loaded %zu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) req->idx, req->fw->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) complete(&req->completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) req->task = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) * We use a kthread as otherwise the kernel serializes all our sync requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) * and we would not be able to mimic batched requests on a sync call. Batched
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * requests on a sync call can for instance happen on a device driver when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) * multiple cards are used and firmware loading happens outside of probe.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) static ssize_t trigger_batched_requests_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) struct test_batched_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) u8 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) test_fw_config->reqs =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) vzalloc(array3_size(sizeof(struct test_batched_req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) test_fw_config->num_requests, 2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) if (!test_fw_config->reqs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) pr_info("batched sync firmware loading '%s' %u times\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) test_fw_config->name, test_fw_config->num_requests);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) for (i = 0; i < test_fw_config->num_requests; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) req = &test_fw_config->reqs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) req->fw = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) req->idx = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) req->name = test_fw_config->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) req->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) init_completion(&req->completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) req->task = kthread_run(test_fw_run_batch_request, req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) "%s-%u", KBUILD_MODNAME, req->idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) if (!req->task || IS_ERR(req->task)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) pr_err("Setting up thread %u failed\n", req->idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) req->task = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) goto out_bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) rc = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) * We require an explicit release to enable more time and delay of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) * calling release_firmware() to improve our chances of forcing a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) * batched request. If we instead called release_firmware() right away
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) * then we might miss on an opportunity of having a successful firmware
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) * request pass on the opportunity to be come a batched request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) out_bail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) for (i = 0; i < test_fw_config->num_requests; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) req = &test_fw_config->reqs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) if (req->task || req->sent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) wait_for_completion(&req->completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) /* Override any worker error if we had a general setup error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) test_fw_config->test_result = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) static DEVICE_ATTR_WO(trigger_batched_requests);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) * We wait for each callback to return with the lock held, no need to lock here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) static void trigger_batched_cb(const struct firmware *fw, void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) struct test_batched_req *req = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) if (!req) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) test_fw_config->test_result = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) /* forces *some* batched requests to queue up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) if (!req->idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) ssleep(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) req->fw = fw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) * Unfortunately the firmware API gives us nothing other than a null FW
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) * if the firmware was not found on async requests. Best we can do is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) * just assume -ENOENT. A better API would pass the actual return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) * value to the callback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) if (!fw && !test_fw_config->test_result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) test_fw_config->test_result = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) complete(&req->completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) ssize_t trigger_batched_requests_async_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) struct test_batched_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) bool send_uevent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) u8 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) test_fw_config->reqs =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) vzalloc(array3_size(sizeof(struct test_batched_req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) test_fw_config->num_requests, 2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) if (!test_fw_config->reqs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) pr_info("batched loading '%s' custom fallback mechanism %u times\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) test_fw_config->name, test_fw_config->num_requests);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) send_uevent = test_fw_config->send_uevent ? FW_ACTION_HOTPLUG :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) FW_ACTION_NOHOTPLUG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) for (i = 0; i < test_fw_config->num_requests; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) req = &test_fw_config->reqs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) req->name = test_fw_config->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) req->fw = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) req->idx = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) init_completion(&req->completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) rc = request_firmware_nowait(THIS_MODULE, send_uevent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) req->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) dev, GFP_KERNEL, req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) trigger_batched_cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) pr_info("#%u: batched async load failed setup: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) i, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) req->rc = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) goto out_bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) req->sent = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) rc = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) out_bail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) * We require an explicit release to enable more time and delay of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) * calling release_firmware() to improve our chances of forcing a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) * batched request. If we instead called release_firmware() right away
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) * then we might miss on an opportunity of having a successful firmware
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) * request pass on the opportunity to be come a batched request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) for (i = 0; i < test_fw_config->num_requests; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) req = &test_fw_config->reqs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) if (req->sent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) wait_for_completion(&req->completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) /* Override any worker error if we had a general setup error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) test_fw_config->test_result = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) static DEVICE_ATTR_WO(trigger_batched_requests_async);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) static ssize_t test_result_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) return test_dev_config_show_int(buf, test_fw_config->test_result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) static DEVICE_ATTR_RO(test_result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) static ssize_t release_all_firmware_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) test_release_all_firmware();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) static DEVICE_ATTR_WO(release_all_firmware);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) static ssize_t read_firmware_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) struct test_batched_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) u8 idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) ssize_t rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) idx = test_fw_config->read_fw_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) if (idx >= test_fw_config->num_requests) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) rc = -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) if (!test_fw_config->reqs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) req = &test_fw_config->reqs[idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) if (!req->fw) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) pr_err("#%u: failed to async load firmware\n", idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) rc = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) pr_info("#%u: loaded %zu\n", idx, req->fw->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) if (req->fw->size > PAGE_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) pr_err("Testing interface must use PAGE_SIZE firmware for now\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) memcpy(buf, req->fw->data, req->fw->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) rc = req->fw->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) static DEVICE_ATTR_RO(read_firmware);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) #define TEST_FW_DEV_ATTR(name) &dev_attr_##name.attr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) static struct attribute *test_dev_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) TEST_FW_DEV_ATTR(reset),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) TEST_FW_DEV_ATTR(config),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) TEST_FW_DEV_ATTR(config_name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) TEST_FW_DEV_ATTR(config_num_requests),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) TEST_FW_DEV_ATTR(config_into_buf),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) TEST_FW_DEV_ATTR(config_buf_size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) TEST_FW_DEV_ATTR(config_file_offset),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) TEST_FW_DEV_ATTR(config_partial),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) TEST_FW_DEV_ATTR(config_sync_direct),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) TEST_FW_DEV_ATTR(config_send_uevent),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) TEST_FW_DEV_ATTR(config_read_fw_idx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) /* These don't use the config at all - they could be ported! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) TEST_FW_DEV_ATTR(trigger_request),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) TEST_FW_DEV_ATTR(trigger_async_request),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) TEST_FW_DEV_ATTR(trigger_custom_fallback),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) #ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) TEST_FW_DEV_ATTR(trigger_request_platform),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) /* These use the config and can use the test_result */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) TEST_FW_DEV_ATTR(trigger_batched_requests),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) TEST_FW_DEV_ATTR(trigger_batched_requests_async),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) TEST_FW_DEV_ATTR(release_all_firmware),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) TEST_FW_DEV_ATTR(test_result),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) TEST_FW_DEV_ATTR(read_firmware),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) ATTRIBUTE_GROUPS(test_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) static struct miscdevice test_fw_misc_device = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) .minor = MISC_DYNAMIC_MINOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) .name = "test_firmware",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) .fops = &test_fw_fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) .groups = test_dev_groups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) static int __init test_firmware_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) test_fw_config = kzalloc(sizeof(struct test_config), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) if (!test_fw_config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) rc = __test_firmware_config_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) kfree(test_fw_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) pr_err("could not init firmware test config: %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) rc = misc_register(&test_fw_misc_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) kfree(test_fw_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) pr_err("could not register misc device: %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) pr_warn("interface ready\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) module_init(test_firmware_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) static void __exit test_firmware_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) mutex_lock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) release_firmware(test_firmware);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) misc_deregister(&test_fw_misc_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) __test_firmware_config_free();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) kfree(test_fw_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) mutex_unlock(&test_fw_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) pr_warn("removed interface\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) module_exit(test_firmware_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) MODULE_AUTHOR("Kees Cook <keescook@chromium.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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