[RFC PATCH 4/8] firewire: test: add test of CSR API for simple AV/C device
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[RFC PATCH 4/8] firewire: test: add test of CSR API for simple AV/C device
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From: Takashi S. <o-t...@sa...> - 2023-12-17 10:30:35
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At present, core function can handle node which has configuration ROM similar to AV/C device somehow. The standard layout of configuration ROM for AV/C device is described in the following document. - Configuration ROM for AV/C Devices 1.0 (Dec. 12, 2000, 1394 Trading Association) This commit adds a KUnit test for this case. The following output is the parse result by config-rom-pretty-printer in linux-firewire-utils (https://git.kernel.org/pub/scm/utils/ieee1394/linux-firewire-utils.git/). $ config-rom-pretty-printer < /tmp/rom.img ROM header and bus information block ----------------------------------------------------------------- 1024 0404eabf bus_info_length 4, crc_length 4, crc 60095 1028 31333934 bus_name "1394" 1032 e0646102 irmc 1, cmc 1, isc 1, bmc 0, cyc_clk_acc 100, max_rec 6 (128) 1036 ffffffff company_id ffffff | 1040 ffffffff device_id 1099511627775 | EUI-64 18446744073709551615 root directory ----------------------------------------------------------------- 1044 00063287 directory_length 6, crc 12935 1048 03ffffff vendor 1052 8100000a --> descriptor leaf at 1092 1056 17ffffff model 1060 8100000e --> descriptor leaf at 1116 1064 0c0083c0 node capabilities: per IEEE 1394 1068 d1000001 --> unit directory at 1072 unit directory at 1072 ----------------------------------------------------------------- 1072 0004442d directory_length 4, crc 17453 1076 1200a02d specifier id 1080 13010001 version 1084 17ffffff model 1088 81000007 --> descriptor leaf at 1116 descriptor leaf at 1092 ----------------------------------------------------------------- 1092 0005c915 leaf_length 5, crc 51477 1096 00000000 textual descriptor 1100 00000000 minimal ASCII 1104 56656e64 "Vend" 1108 6f72204e "or N" 1112 616d6500 "ame" descriptor leaf at 1116 ----------------------------------------------------------------- 1116 00057f16 leaf_length 5, crc 32534 1120 00000000 textual descriptor 1124 00000000 minimal ASCII 1128 4d6f6465 "Mode" 1132 6c204e61 "l Na" 1136 6d650000 "me" Signed-off-by: Takashi Sakamoto <o-t...@sa...> --- drivers/firewire/csr-api-test.c | 119 ++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) diff --git a/drivers/firewire/csr-api-test.c b/drivers/firewire/csr-api-test.c index a76d767373e9..d91852825efc 100644 --- a/drivers/firewire/csr-api-test.c +++ b/drivers/firewire/csr-api-test.c @@ -8,7 +8,126 @@ #include <kunit/test.h> +// Configuration ROM for AV/C Devices 1.0 (Dec. 12, 2000, 1394 Trading Association) +// Annex C:Configuration ROM example(informative) +// C.1 Simple AV/C device +// +// Copied from the documentation. +static const u32 simple_avc_device[] = { + 0x0404eabf, + 0x31333934, + 0xe0646102, + 0xffffffff, + 0xffffffff, + 0x00063287, // root directory. + 0x03ffffff, + 0x8100000a, + 0x17ffffff, + 0x8100000e, + 0x0c0083c0, + 0xd1000001, + 0x0004442d, // unit 0 directory. + 0x1200a02d, + 0x13010001, + 0x17ffffff, + 0x81000007, + 0x0005c915, // leaf. + 0x00000000, + 0x00000000, + 0x56656e64, + 0x6f72204e, + 0x616d6500, + 0x00057f16, // leaf. + 0x00000000, + 0x00000000, + 0x4d6f6465, + 0x6c204e61, + 0x6d650000, +}; + +static void csr_api_simple_avc_device(struct kunit *test) +{ + static const struct fw_device node = { + .device = { + .type = &fw_device_type, + }, + .config_rom = simple_avc_device, + .config_rom_length = sizeof(simple_avc_device), + }; + static const struct fw_unit unit0 = { + .device = { + .type = &fw_unit_type, + .parent = (struct device *)&node.device, + }, + .directory = &simple_avc_device[12], + }; + struct device *node_dev = (struct device *)&node.device; + struct device *unit0_dev = (struct device *)&unit0.device; + static const int unit_expected_ids[] = {0x00ffffff, 0x00ffffff, 0x0000a02d, 0x00010001}; + char *buf = kunit_kzalloc(test, PAGE_SIZE, GFP_KERNEL); + int ids[4] = {0, 0, 0, 0}; + + // Ensure associations for node and unit devices. + + KUNIT_ASSERT_TRUE(test, is_fw_device(node_dev)); + KUNIT_ASSERT_FALSE(test, is_fw_unit(node_dev)); + KUNIT_ASSERT_PTR_EQ(test, fw_device(node_dev), &node); + + KUNIT_ASSERT_FALSE(test, is_fw_device(unit0_dev)); + KUNIT_ASSERT_TRUE(test, is_fw_unit(unit0_dev)); + KUNIT_ASSERT_PTR_EQ(test, fw_parent_device((&unit0)), &node); + KUNIT_ASSERT_PTR_EQ(test, fw_unit(unit0_dev), &unit0); + + // For entries in root directory. + + // Vendor immediate entry is found. + KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[0].attr, buf), 0); + KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n"); + + // Model immediate entry is found. + KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[4].attr, buf), 0); + KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n"); + + // Descriptor leaf entry for vendor is found. + KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[5].attr, buf), 0); + KUNIT_EXPECT_STREQ(test, buf, "Vendor Name\n"); + + // Descriptor leaf entry for model is found. + KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[6].attr, buf), 0); + KUNIT_EXPECT_STREQ(test, buf, "Model Name\n"); + + // For entries in unit 0 directory. + + // Vendor immediate entry is not found. + KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[0].attr, buf), 0); + + // Model immediate entry is found. + KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[4].attr, buf), 0); + KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n"); + + // Descriptor leaf entry for vendor is not found. + KUNIT_EXPECT_LT(test, show_text_leaf(unit0_dev, &config_rom_attributes[5].attr, buf), 0); + + // Descriptor leaf entry for model is not found. + KUNIT_EXPECT_GT(test, show_text_leaf(unit0_dev, &config_rom_attributes[6].attr, buf), 0); + KUNIT_EXPECT_STREQ(test, buf, "Model Name\n"); + + // Specifier_ID immediate entry is found. + KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[2].attr, buf), 0); + KUNIT_EXPECT_STREQ(test, buf, "0x00a02d\n"); + + // Version immediate entry is found. + KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[3].attr, buf), 0); + KUNIT_EXPECT_STREQ(test, buf, "0x010001\n"); + + kunit_kfree(test, buf); + + get_modalias_ids(&unit0, ids); + KUNIT_EXPECT_MEMEQ(test, ids, unit_expected_ids, sizeof(ids)); +} + static struct kunit_case csr_api_test_cases[] = { + KUNIT_CASE(csr_api_simple_avc_device), {} }; -- 2.39.2 |