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Message-ID: <20240418092303.19725-2-o-takashi@sakamocchi.jp>
Date: Thu, 18 Apr 2024 18:22:51 +0900
From: Takashi Sakamoto <o-takashi@...amocchi.jp>
To: linux1394-devel@...ts.sourceforge.net
Cc: linux-kernel@...r.kernel.org
Subject: [RFC PATCH 01/13] firewire: core: add common inline functions to serialize/deserialize asynchronous packet header
In both core and 1394 OHCI driver, some hard-coded values and macros are
used to serialize/deserialize the header for asynchronous packets. It is
inconvenient to reuse them.
This commit adds some helper inline functions with their tests for the
purpose.
Signed-off-by: Takashi Sakamoto <o-takashi@...amocchi.jp>
---
drivers/firewire/.kunitconfig | 1 +
drivers/firewire/Kconfig | 16 +
drivers/firewire/Makefile | 3 +
drivers/firewire/packet-header-definitions.h | 168 ++++++
drivers/firewire/packet-serdes-test.c | 538 +++++++++++++++++++
5 files changed, 726 insertions(+)
create mode 100644 drivers/firewire/packet-header-definitions.h
create mode 100644 drivers/firewire/packet-serdes-test.c
diff --git a/drivers/firewire/.kunitconfig b/drivers/firewire/.kunitconfig
index 76444a2d5e12..60d9e7c35417 100644
--- a/drivers/firewire/.kunitconfig
+++ b/drivers/firewire/.kunitconfig
@@ -3,3 +3,4 @@ CONFIG_PCI=y
CONFIG_FIREWIRE=y
CONFIG_FIREWIRE_KUNIT_UAPI_TEST=y
CONFIG_FIREWIRE_KUNIT_DEVICE_ATTRIBUTE_TEST=y
+CONFIG_FIREWIRE_KUNIT_PACKET_SERDES_TEST=y
diff --git a/drivers/firewire/Kconfig b/drivers/firewire/Kconfig
index 552a39df8cbd..869598b20e3a 100644
--- a/drivers/firewire/Kconfig
+++ b/drivers/firewire/Kconfig
@@ -50,6 +50,22 @@ config FIREWIRE_KUNIT_DEVICE_ATTRIBUTE_TEST
For more information on KUnit and unit tests in general, refer
to the KUnit documentation in Documentation/dev-tools/kunit/.
+config FIREWIRE_KUNIT_PACKET_SERDES_TEST
+ tristate "KUnit tests for packet serialization/deserialization" if !KUNIT_ALL_TESTS
+ depends on FIREWIRE && KUNIT
+ default KUNIT_ALL_TESTS
+ help
+ This builds the KUnit tests for packet serialization and
+ deserialization.
+
+ KUnit tests run during boot and output the results to the debug
+ log in TAP format (https://testanything.org/). Only useful for
+ kernel devs running KUnit test harness and are not for inclusion
+ into a production build.
+
+ For more information on KUnit and unit tests in general, refer
+ to the KUnit documentation in Documentation/dev-tools/kunit/.
+
config FIREWIRE_OHCI
tristate "OHCI-1394 controllers"
depends on PCI && FIREWIRE && MMU
diff --git a/drivers/firewire/Makefile b/drivers/firewire/Makefile
index b24b2879ac34..bbde29a0fba6 100644
--- a/drivers/firewire/Makefile
+++ b/drivers/firewire/Makefile
@@ -17,4 +17,7 @@ obj-$(CONFIG_FIREWIRE_NOSY) += nosy.o
obj-$(CONFIG_PROVIDE_OHCI1394_DMA_INIT) += init_ohci1394_dma.o
firewire-uapi-test-objs += uapi-test.o
+firewire-packet-serdes-test-objs += packet-serdes-test.o
+
obj-$(CONFIG_FIREWIRE_KUNIT_UAPI_TEST) += firewire-uapi-test.o
+obj-$(CONFIG_FIREWIRE_KUNIT_PACKET_SERDES_TEST) += firewire-packet-serdes-test.o
diff --git a/drivers/firewire/packet-header-definitions.h b/drivers/firewire/packet-header-definitions.h
new file mode 100644
index 000000000000..83e550427706
--- /dev/null
+++ b/drivers/firewire/packet-header-definitions.h
@@ -0,0 +1,168 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+//
+// packet-header-definitions.h - The definitions of header fields for IEEE 1394 packet.
+//
+// Copyright (c) 2024 Takashi Sakamoto
+
+#ifndef _FIREWIRE_PACKET_HEADER_DEFINITIONS_H
+#define _FIREWIRE_PACKET_HEADER_DEFINITIONS_H
+
+#define ASYNC_HEADER_QUADLET_COUNT 4
+
+#define ASYNC_HEADER_Q0_DESTINATION_SHIFT 16
+#define ASYNC_HEADER_Q0_DESTINATION_MASK 0xffff0000
+#define ASYNC_HEADER_Q0_TLABEL_SHIFT 10
+#define ASYNC_HEADER_Q0_TLABEL_MASK 0x0000fc00
+#define ASYNC_HEADER_Q0_RETRY_SHIFT 8
+#define ASYNC_HEADER_Q0_RETRY_MASK 0x00000300
+#define ASYNC_HEADER_Q0_TCODE_SHIFT 4
+#define ASYNC_HEADER_Q0_TCODE_MASK 0x000000f0
+#define ASYNC_HEADER_Q0_PRIORITY_SHIFT 0
+#define ASYNC_HEADER_Q0_PRIORITY_MASK 0x0000000f
+#define ASYNC_HEADER_Q1_SOURCE_SHIFT 16
+#define ASYNC_HEADER_Q1_SOURCE_MASK 0xffff0000
+#define ASYNC_HEADER_Q1_RCODE_SHIFT 12
+#define ASYNC_HEADER_Q1_RCODE_MASK 0x0000f000
+#define ASYNC_HEADER_Q1_RCODE_SHIFT 12
+#define ASYNC_HEADER_Q1_RCODE_MASK 0x0000f000
+#define ASYNC_HEADER_Q1_OFFSET_HIGH_SHIFT 0
+#define ASYNC_HEADER_Q1_OFFSET_HIGH_MASK 0x0000ffff
+#define ASYNC_HEADER_Q3_DATA_LENGTH_SHIFT 16
+#define ASYNC_HEADER_Q3_DATA_LENGTH_MASK 0xffff0000
+#define ASYNC_HEADER_Q3_EXTENDED_TCODE_SHIFT 0
+#define ASYNC_HEADER_Q3_EXTENDED_TCODE_MASK 0x0000ffff
+
+static inline unsigned int async_header_get_destination(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ return (header[0] & ASYNC_HEADER_Q0_DESTINATION_MASK) >> ASYNC_HEADER_Q0_DESTINATION_SHIFT;
+}
+
+static inline unsigned int async_header_get_tlabel(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ return (header[0] & ASYNC_HEADER_Q0_TLABEL_MASK) >> ASYNC_HEADER_Q0_TLABEL_SHIFT;
+}
+
+static inline unsigned int async_header_get_retry(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ return (header[0] & ASYNC_HEADER_Q0_RETRY_MASK) >> ASYNC_HEADER_Q0_RETRY_SHIFT;
+}
+
+static inline unsigned int async_header_get_tcode(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ return (header[0] & ASYNC_HEADER_Q0_TCODE_MASK) >> ASYNC_HEADER_Q0_TCODE_SHIFT;
+}
+
+static inline unsigned int async_header_get_priority(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ return (header[0] & ASYNC_HEADER_Q0_PRIORITY_MASK) >> ASYNC_HEADER_Q0_PRIORITY_SHIFT;
+}
+
+static inline unsigned int async_header_get_source(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ return (header[1] & ASYNC_HEADER_Q1_SOURCE_MASK) >> ASYNC_HEADER_Q1_SOURCE_SHIFT;
+}
+
+static inline unsigned int async_header_get_rcode(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ return (header[1] & ASYNC_HEADER_Q1_RCODE_MASK) >> ASYNC_HEADER_Q1_RCODE_SHIFT;
+}
+
+static inline u64 async_header_get_offset(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ u32 hi = (header[1] & ASYNC_HEADER_Q1_OFFSET_HIGH_MASK) >> ASYNC_HEADER_Q1_OFFSET_HIGH_SHIFT;
+ return (((u64)hi) << 32) | ((u64)header[2]);
+}
+
+static inline u32 async_header_get_quadlet_data(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ return header[3];
+}
+
+static inline unsigned int async_header_get_data_length(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ return (header[3] & ASYNC_HEADER_Q3_DATA_LENGTH_MASK) >> ASYNC_HEADER_Q3_DATA_LENGTH_SHIFT;
+}
+
+static inline unsigned int async_header_get_extended_tcode(const u32 header[ASYNC_HEADER_QUADLET_COUNT])
+{
+ return (header[3] & ASYNC_HEADER_Q3_EXTENDED_TCODE_MASK) >> ASYNC_HEADER_Q3_EXTENDED_TCODE_SHIFT;
+}
+
+static inline void async_header_set_destination(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int destination)
+{
+ header[0] &= ~ASYNC_HEADER_Q0_DESTINATION_MASK;
+ header[0] |= (((u32)destination) << ASYNC_HEADER_Q0_DESTINATION_SHIFT) & ASYNC_HEADER_Q0_DESTINATION_MASK;
+}
+
+static inline void async_header_set_tlabel(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int tlabel)
+{
+ header[0] &= ~ASYNC_HEADER_Q0_TLABEL_MASK;
+ header[0] |= (((u32)tlabel) << ASYNC_HEADER_Q0_TLABEL_SHIFT) & ASYNC_HEADER_Q0_TLABEL_MASK;
+}
+
+static inline void async_header_set_retry(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int retry)
+{
+ header[0] &= ~ASYNC_HEADER_Q0_RETRY_MASK;
+ header[0] |= (((u32)retry) << ASYNC_HEADER_Q0_RETRY_SHIFT) & ASYNC_HEADER_Q0_RETRY_MASK;
+}
+
+static inline void async_header_set_tcode(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int tcode)
+{
+ header[0] &= ~ASYNC_HEADER_Q0_TCODE_MASK;
+ header[0] |= (((u32)tcode) << ASYNC_HEADER_Q0_TCODE_SHIFT) & ASYNC_HEADER_Q0_TCODE_MASK;
+}
+
+static inline void async_header_set_priority(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int priority)
+{
+ header[0] &= ~ASYNC_HEADER_Q0_PRIORITY_MASK;
+ header[0] |= (((u32)priority) << ASYNC_HEADER_Q0_PRIORITY_SHIFT) & ASYNC_HEADER_Q0_PRIORITY_MASK;
+}
+
+
+static inline void async_header_set_source(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int source)
+{
+ header[1] &= ~ASYNC_HEADER_Q1_SOURCE_MASK;
+ header[1] |= (((u32)source) << ASYNC_HEADER_Q1_SOURCE_SHIFT) & ASYNC_HEADER_Q1_SOURCE_MASK;
+}
+
+static inline void async_header_set_rcode(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int rcode)
+{
+ header[1] &= ~ASYNC_HEADER_Q1_RCODE_MASK;
+ header[1] |= (((u32)rcode) << ASYNC_HEADER_Q1_RCODE_SHIFT) & ASYNC_HEADER_Q1_RCODE_MASK;
+}
+
+static inline void async_header_set_offset(u32 header[ASYNC_HEADER_QUADLET_COUNT], u64 offset)
+{
+ u32 hi = (u32)(offset >> 32);
+ header[1] &= ~ASYNC_HEADER_Q1_OFFSET_HIGH_MASK;
+ header[1] |= (hi << ASYNC_HEADER_Q1_OFFSET_HIGH_SHIFT) & ASYNC_HEADER_Q1_OFFSET_HIGH_MASK;
+ header[2] = (u32)(offset & 0x00000000ffffffff);
+}
+
+static inline void async_header_set_quadlet_data(u32 header[ASYNC_HEADER_QUADLET_COUNT], u32 quadlet_data)
+{
+ header[3] = quadlet_data;
+}
+
+static inline void async_header_set_data_length(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int data_length)
+{
+ header[3] &= ~ASYNC_HEADER_Q3_DATA_LENGTH_MASK;
+ header[3] |= (((u32)data_length) << ASYNC_HEADER_Q3_DATA_LENGTH_SHIFT) & ASYNC_HEADER_Q3_DATA_LENGTH_MASK;
+}
+
+static inline void async_header_set_extended_tcode(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int extended_tcode)
+{
+ header[3] &= ~ASYNC_HEADER_Q3_EXTENDED_TCODE_MASK;
+ header[3] |= (((u32)extended_tcode) << ASYNC_HEADER_Q3_EXTENDED_TCODE_SHIFT) & ASYNC_HEADER_Q3_EXTENDED_TCODE_MASK;
+}
+
+#endif // _FIREWIRE_PACKET_HEADER_DEFINITIONS_H
diff --git a/drivers/firewire/packet-serdes-test.c b/drivers/firewire/packet-serdes-test.c
new file mode 100644
index 000000000000..299e9f908463
--- /dev/null
+++ b/drivers/firewire/packet-serdes-test.c
@@ -0,0 +1,538 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+//
+// packet-serdes-test.c - An application of Kunit to check serialization/deserialization of packets
+// defined by IEEE 1394.
+//
+// Copyright (c) 2024 Takashi Sakamoto
+
+#include <kunit/test.h>
+
+#include <linux/firewire-constants.h>
+
+#include "packet-header-definitions.h"
+
+static void serialize_async_header_common(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int dst_id, unsigned int tlabel,
+ unsigned int retry, unsigned int tcode,
+ unsigned int priority, unsigned int src_id)
+{
+ async_header_set_destination(header, dst_id);
+ async_header_set_tlabel(header, tlabel);
+ async_header_set_retry(header, retry);
+ async_header_set_tcode(header, tcode);
+ async_header_set_priority(header, priority);
+ async_header_set_source(header, src_id);
+}
+
+static void serialize_async_header_request(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int dst_id, unsigned int tlabel,
+ unsigned int retry, unsigned int tcode,
+ unsigned int priority, unsigned int src_id, u64 offset)
+{
+ serialize_async_header_common(header, dst_id, tlabel, retry, tcode, priority, src_id);
+ async_header_set_offset(header, offset);
+}
+
+static void serialize_async_header_quadlet_request(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int dst_id, unsigned int tlabel,
+ unsigned int retry, unsigned int tcode,
+ unsigned int priority, unsigned int src_id,
+ u64 offset)
+{
+ serialize_async_header_request(header, dst_id, tlabel, retry, tcode, priority, src_id,
+ offset);
+}
+
+static void serialize_async_header_block_request(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int dst_id, unsigned int tlabel,
+ unsigned int retry, unsigned int tcode,
+ unsigned int priority, unsigned int src_id,
+ u64 offset, unsigned int data_length,
+ unsigned int extended_tcode)
+{
+ serialize_async_header_request(header, dst_id, tlabel, retry, tcode, priority, src_id,
+ offset);
+ async_header_set_data_length(header, data_length);
+ async_header_set_extended_tcode(header, extended_tcode);
+}
+
+static void serialize_async_header_response(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int dst_id, unsigned int tlabel,
+ unsigned int retry, unsigned int tcode,
+ unsigned int priority, unsigned int src_id,
+ unsigned int rcode)
+{
+ serialize_async_header_common(header, dst_id, tlabel, retry, tcode, priority, src_id);
+ async_header_set_rcode(header, rcode);
+}
+
+static void serialize_async_header_quadlet_response(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int dst_id, unsigned int tlabel,
+ unsigned int retry, unsigned int tcode,
+ unsigned int priority, unsigned int src_id,
+ unsigned int rcode)
+{
+ serialize_async_header_response(header, dst_id, tlabel, retry, tcode, priority, src_id,
+ rcode);
+}
+
+static void serialize_async_header_block_response(u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int dst_id, unsigned int tlabel,
+ unsigned int retry, unsigned int tcode,
+ unsigned int priority, unsigned int src_id,
+ unsigned int rcode, unsigned int data_length,
+ unsigned int extended_tcode)
+{
+ serialize_async_header_response(header, dst_id, tlabel, retry, tcode, priority, src_id,
+ rcode);
+ async_header_set_data_length(header, data_length);
+ async_header_set_extended_tcode(header, extended_tcode);
+}
+
+static void deserialize_async_header_common(const u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int *dst_id, unsigned int *tlabel,
+ unsigned int *retry, unsigned int *tcode,
+ unsigned int *priority, unsigned int *src_id)
+{
+ *dst_id = async_header_get_destination(header);
+ *tlabel = async_header_get_tlabel(header);
+ *retry = async_header_get_retry(header);
+ *tcode = async_header_get_tcode(header);
+ *priority = async_header_get_priority(header);
+ *src_id = async_header_get_source(header);
+}
+
+static void deserialize_async_header_request(const u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int *dst_id, unsigned int *tlabel,
+ unsigned int *retry, unsigned int *tcode,
+ unsigned int *priority, unsigned int *src_id,
+ u64 *offset)
+{
+ deserialize_async_header_common(header, dst_id, tlabel, retry, tcode, priority, src_id);
+ *offset = async_header_get_offset(header);
+}
+
+static void deserialize_async_header_quadlet_request(const u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int *dst_id, unsigned int *tlabel,
+ unsigned int *retry, unsigned int *tcode,
+ unsigned int *priority, unsigned int *src_id,
+ u64 *offset)
+{
+ deserialize_async_header_request(header, dst_id, tlabel, retry, tcode, priority, src_id,
+ offset);
+}
+
+static void deserialize_async_header_block_request(const u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int *dst_id, unsigned int *tlabel,
+ unsigned int *retry, unsigned int *tcode,
+ unsigned int *priority, unsigned int *src_id,
+ u64 *offset,
+ unsigned int *data_length,
+ unsigned int *extended_tcode)
+{
+ deserialize_async_header_request(header, dst_id, tlabel, retry, tcode, priority, src_id,
+ offset);
+ *data_length = async_header_get_data_length(header);
+ *extended_tcode = async_header_get_extended_tcode(header);
+}
+
+static void deserialize_async_header_response(const u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int *dst_id, unsigned int *tlabel,
+ unsigned int *retry, unsigned int *tcode,
+ unsigned int *priority, unsigned int *src_id,
+ unsigned int *rcode)
+{
+ deserialize_async_header_common(header, dst_id, tlabel, retry, tcode, priority, src_id);
+ *rcode = async_header_get_rcode(header);
+}
+
+static void deserialize_async_header_quadlet_response(const u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int *dst_id, unsigned int *tlabel,
+ unsigned int *retry, unsigned int *tcode,
+ unsigned int *priority, unsigned int *src_id,
+ unsigned int *rcode)
+{
+ deserialize_async_header_response(header, dst_id, tlabel, retry, tcode, priority, src_id, rcode);
+}
+
+static void deserialize_async_header_block_response(const u32 header[ASYNC_HEADER_QUADLET_COUNT],
+ unsigned int *dst_id, unsigned int *tlabel,
+ unsigned int *retry, unsigned int *tcode,
+ unsigned int *priority, unsigned int *src_id,
+ unsigned int *rcode, unsigned int *data_length,
+ unsigned int *extended_tcode)
+{
+ deserialize_async_header_response(header, dst_id, tlabel, retry, tcode, priority, src_id, rcode);
+ *data_length = async_header_get_data_length(header);
+ *extended_tcode = async_header_get_extended_tcode(header);
+}
+
+static void test_async_header_write_quadlet_request(struct kunit *test)
+{
+ static const u32 expected[ASYNC_HEADER_QUADLET_COUNT] = {
+ 0xffc05100,
+ 0xffc1ffff,
+ 0xf0000234,
+ 0x1f0000c0,
+ };
+ u32 header[ASYNC_HEADER_QUADLET_COUNT] = {0, 0, 0, 0};
+
+ unsigned int dst_id;
+ unsigned int tlabel;
+ unsigned int retry;
+ unsigned int tcode;
+ unsigned int priority;
+ unsigned int src_id;
+ u64 offset;
+ u32 quadlet_data;
+
+ deserialize_async_header_quadlet_request(expected, &dst_id, &tlabel, &retry, &tcode,
+ &priority, &src_id, &offset);
+ quadlet_data = async_header_get_quadlet_data(expected);
+
+ KUNIT_EXPECT_EQ(test, 0xffc0, dst_id);
+ KUNIT_EXPECT_EQ(test, 0x14, tlabel);
+ KUNIT_EXPECT_EQ(test, 0x01, retry);
+ KUNIT_EXPECT_EQ(test, TCODE_WRITE_QUADLET_REQUEST, tcode);
+ KUNIT_EXPECT_EQ(test, 0x00, priority);
+ KUNIT_EXPECT_EQ(test, 0xffc1, src_id);
+ KUNIT_EXPECT_EQ(test, 0xfffff0000234, offset);
+ KUNIT_EXPECT_EQ(test, 0x1f0000c0, quadlet_data);
+
+ serialize_async_header_quadlet_request(header, dst_id, tlabel, retry, tcode, priority,
+ src_id, offset);
+ async_header_set_quadlet_data(header, quadlet_data);
+
+ KUNIT_EXPECT_MEMEQ(test, header, expected, sizeof(expected));
+}
+
+static void test_async_header_write_block_request(struct kunit *test)
+{
+ static const u32 expected[ASYNC_HEADER_QUADLET_COUNT] = {
+ 0xffc06510,
+ 0xffc1ecc0,
+ 0x00000000,
+ 0x00180000,
+ };
+ u32 header[ASYNC_HEADER_QUADLET_COUNT] = {0, 0, 0, 0};
+
+ unsigned int dst_id;
+ unsigned int tlabel;
+ unsigned int retry;
+ unsigned int tcode;
+ unsigned int priority;
+ unsigned int src_id;
+ u64 offset;
+ unsigned int data_length;
+ unsigned int extended_tcode;
+
+ deserialize_async_header_block_request(expected, &dst_id, &tlabel, &retry, &tcode,
+ &priority, &src_id, &offset, &data_length,
+ &extended_tcode);
+
+ KUNIT_EXPECT_EQ(test, 0xffc0, dst_id);
+ KUNIT_EXPECT_EQ(test, 0x19, tlabel);
+ KUNIT_EXPECT_EQ(test, 0x01, retry);
+ KUNIT_EXPECT_EQ(test, TCODE_WRITE_BLOCK_REQUEST, tcode);
+ KUNIT_EXPECT_EQ(test, 0x00, priority);
+ KUNIT_EXPECT_EQ(test, 0xffc1, src_id);
+ KUNIT_EXPECT_EQ(test, 0xecc000000000, offset);
+ KUNIT_EXPECT_EQ(test, 0x0018, data_length);
+ KUNIT_EXPECT_EQ(test, 0x0000, extended_tcode);
+
+ serialize_async_header_block_request(header, dst_id, tlabel, retry, tcode, priority, src_id,
+ offset, data_length, extended_tcode);
+
+ KUNIT_EXPECT_MEMEQ(test, header, expected, sizeof(expected));
+}
+
+static void test_async_header_write_response(struct kunit *test)
+{
+ static const u32 expected[ASYNC_HEADER_QUADLET_COUNT] = {
+ 0xffc15120,
+ 0xffc00000,
+ 0x00000000,
+ 0x00000000,
+ };
+ u32 header[ASYNC_HEADER_QUADLET_COUNT] = {0, 0, 0, 0};
+
+ unsigned int dst_id;
+ unsigned int tlabel;
+ unsigned int retry;
+ unsigned int tcode;
+ unsigned int priority;
+ unsigned int src_id;
+ unsigned int rcode;
+
+ deserialize_async_header_quadlet_response(expected, &dst_id, &tlabel, &retry, &tcode,
+ &priority, &src_id, &rcode);
+
+ KUNIT_EXPECT_EQ(test, 0xffc1, dst_id);
+ KUNIT_EXPECT_EQ(test, 0x14, tlabel);
+ KUNIT_EXPECT_EQ(test, 0x01, retry);
+ KUNIT_EXPECT_EQ(test, TCODE_WRITE_RESPONSE, tcode);
+ KUNIT_EXPECT_EQ(test, 0x00, priority);
+ KUNIT_EXPECT_EQ(test, 0xffc0, src_id);
+ KUNIT_EXPECT_EQ(test, RCODE_COMPLETE, rcode);
+
+ serialize_async_header_quadlet_response(header, dst_id, tlabel, retry, tcode, priority,
+ src_id, rcode);
+
+ KUNIT_EXPECT_MEMEQ(test, header, expected, sizeof(expected) - sizeof(expected[0]));
+}
+
+static void test_async_header_read_quadlet_request(struct kunit *test)
+{
+ static const u32 expected[ASYNC_HEADER_QUADLET_COUNT] = {
+ 0xffc0f140,
+ 0xffc1ffff,
+ 0xf0000984,
+ 0x00000000,
+ };
+ u32 header[ASYNC_HEADER_QUADLET_COUNT] = {0, 0, 0, 0};
+
+ unsigned int dst_id;
+ unsigned int tlabel;
+ unsigned int retry;
+ unsigned int tcode;
+ unsigned int priority;
+ unsigned int src_id;
+ u64 offset;
+
+ deserialize_async_header_quadlet_request(expected, &dst_id, &tlabel, &retry, &tcode,
+ &priority, &src_id, &offset);
+
+ KUNIT_EXPECT_EQ(test, 0xffc0, dst_id);
+ KUNIT_EXPECT_EQ(test, 0x3c, tlabel);
+ KUNIT_EXPECT_EQ(test, 0x01, retry);
+ KUNIT_EXPECT_EQ(test, TCODE_READ_QUADLET_REQUEST, tcode);
+ KUNIT_EXPECT_EQ(test, 0x00, priority);
+ KUNIT_EXPECT_EQ(test, 0xffc1, src_id);
+ KUNIT_EXPECT_EQ(test, 0xfffff0000984, offset);
+
+ serialize_async_header_quadlet_request(header, dst_id, tlabel, retry, tcode, priority,
+ src_id, offset);
+
+ KUNIT_EXPECT_MEMEQ(test, header, expected, sizeof(expected));
+}
+
+static void test_async_header_read_quadlet_response(struct kunit *test)
+{
+ static const u32 expected[ASYNC_HEADER_QUADLET_COUNT] = {
+ 0xffc1f160,
+ 0xffc00000,
+ 0x00000000,
+ 0x00000180,
+ };
+ u32 header[ASYNC_HEADER_QUADLET_COUNT] = {0, 0, 0, 0};
+
+ unsigned int dst_id;
+ unsigned int tlabel;
+ unsigned int retry;
+ unsigned int tcode;
+ unsigned int priority;
+ unsigned int src_id;
+ unsigned int rcode;
+ u32 quadlet_data;
+
+ deserialize_async_header_quadlet_response(expected, &dst_id, &tlabel, &retry, &tcode,
+ &priority, &src_id, &rcode);
+ quadlet_data = async_header_get_quadlet_data(expected);
+
+ KUNIT_EXPECT_EQ(test, 0xffc1, dst_id);
+ KUNIT_EXPECT_EQ(test, 0x3c, tlabel);
+ KUNIT_EXPECT_EQ(test, 0x01, retry);
+ KUNIT_EXPECT_EQ(test, TCODE_READ_QUADLET_RESPONSE, tcode);
+ KUNIT_EXPECT_EQ(test, 0x00, priority);
+ KUNIT_EXPECT_EQ(test, 0xffc0, src_id);
+ KUNIT_EXPECT_EQ(test, RCODE_COMPLETE, rcode);
+ KUNIT_EXPECT_EQ(test, 0x00000180, quadlet_data);
+
+ serialize_async_header_quadlet_response(header, dst_id, tlabel, retry, tcode, priority,
+ src_id, rcode);
+ async_header_set_quadlet_data(header, quadlet_data);
+
+ KUNIT_EXPECT_MEMEQ(test, header, expected, sizeof(expected));
+}
+
+static void test_async_header_read_block_request(struct kunit *test)
+{
+ static const u32 expected[ASYNC_HEADER_QUADLET_COUNT] = {
+ 0xffc0e150,
+ 0xffc1ffff,
+ 0xf0000400,
+ 0x00200000,
+ };
+ u32 header[ASYNC_HEADER_QUADLET_COUNT] = {0, 0, 0, 0};
+
+ unsigned int dst_id;
+ unsigned int tlabel;
+ unsigned int retry;
+ unsigned int tcode;
+ unsigned int priority;
+ unsigned int src_id;
+ u64 offset;
+ unsigned int data_length;
+ unsigned int extended_tcode;
+
+ deserialize_async_header_block_request(expected, &dst_id, &tlabel, &retry, &tcode,
+ &priority, &src_id, &offset, &data_length,
+ &extended_tcode);
+
+ KUNIT_EXPECT_EQ(test, 0xffc0, dst_id);
+ KUNIT_EXPECT_EQ(test, 0x38, tlabel);
+ KUNIT_EXPECT_EQ(test, 0x01, retry);
+ KUNIT_EXPECT_EQ(test, TCODE_READ_BLOCK_REQUEST, tcode);
+ KUNIT_EXPECT_EQ(test, 0x00, priority);
+ KUNIT_EXPECT_EQ(test, 0xffc1, src_id);
+ KUNIT_EXPECT_EQ(test, 0xfffff0000400, offset);
+ KUNIT_EXPECT_EQ(test, 0x0020, data_length);
+ KUNIT_EXPECT_EQ(test, 0x0000, extended_tcode);
+
+ serialize_async_header_block_request(header, dst_id, tlabel, retry, tcode, priority, src_id,
+ offset, data_length, extended_tcode);
+
+ KUNIT_EXPECT_MEMEQ(test, header, expected, sizeof(expected));
+}
+
+static void test_async_header_read_block_response(struct kunit *test)
+{
+ static const u32 expected[ASYNC_HEADER_QUADLET_COUNT] = {
+ 0xffc1e170,
+ 0xffc00000,
+ 0x00000000,
+ 0x00200000,
+ };
+ u32 header[ASYNC_HEADER_QUADLET_COUNT] = {0, 0, 0, 0};
+
+ unsigned int dst_id;
+ unsigned int tlabel;
+ unsigned int retry;
+ unsigned int tcode;
+ unsigned int priority;
+ unsigned int src_id;
+ unsigned int rcode;
+ unsigned int data_length;
+ unsigned int extended_tcode;
+
+ deserialize_async_header_block_response(expected, &dst_id, &tlabel, &retry, &tcode,
+ &priority, &src_id, &rcode, &data_length,
+ &extended_tcode);
+
+ KUNIT_EXPECT_EQ(test, 0xffc1, dst_id);
+ KUNIT_EXPECT_EQ(test, 0x38, tlabel);
+ KUNIT_EXPECT_EQ(test, 0x01, retry);
+ KUNIT_EXPECT_EQ(test, TCODE_READ_BLOCK_RESPONSE, tcode);
+ KUNIT_EXPECT_EQ(test, 0x00, priority);
+ KUNIT_EXPECT_EQ(test, 0xffc0, src_id);
+ KUNIT_EXPECT_EQ(test, RCODE_COMPLETE, rcode);
+ KUNIT_EXPECT_EQ(test, 0x0020, data_length);
+ KUNIT_EXPECT_EQ(test, 0x0000, extended_tcode);
+
+ serialize_async_header_block_response(header, dst_id, tlabel, retry, tcode, priority,
+ src_id, rcode, data_length, extended_tcode);
+
+ KUNIT_EXPECT_MEMEQ(test, header, expected, sizeof(expected));
+}
+
+static void test_async_header_lock_request(struct kunit *test)
+{
+ static const u32 expected[ASYNC_HEADER_QUADLET_COUNT] = {
+ 0xffc02d90,
+ 0xffc1ffff,
+ 0xf0000984,
+ 0x00080002,
+ };
+ u32 header[ASYNC_HEADER_QUADLET_COUNT] = {0, 0, 0, 0};
+
+ unsigned int dst_id;
+ unsigned int tlabel;
+ unsigned int retry;
+ unsigned int tcode;
+ unsigned int priority;
+ unsigned int src_id;
+ u64 offset;
+ unsigned int data_length;
+ unsigned int extended_tcode;
+
+ deserialize_async_header_block_request(expected, &dst_id, &tlabel, &retry, &tcode,
+ &priority, &src_id, &offset, &data_length,
+ &extended_tcode);
+
+ KUNIT_EXPECT_EQ(test, 0xffc0, dst_id);
+ KUNIT_EXPECT_EQ(test, 0x0b, tlabel);
+ KUNIT_EXPECT_EQ(test, 0x01, retry);
+ KUNIT_EXPECT_EQ(test, TCODE_LOCK_REQUEST, tcode);
+ KUNIT_EXPECT_EQ(test, 0x00, priority);
+ KUNIT_EXPECT_EQ(test, 0xffc1, src_id);
+ KUNIT_EXPECT_EQ(test, 0xfffff0000984, offset);
+ KUNIT_EXPECT_EQ(test, 0x0008, data_length);
+ KUNIT_EXPECT_EQ(test, EXTCODE_COMPARE_SWAP, extended_tcode);
+
+ serialize_async_header_block_request(header, dst_id, tlabel, retry, tcode, priority, src_id,
+ offset, data_length, extended_tcode);
+
+ KUNIT_EXPECT_MEMEQ(test, header, expected, sizeof(expected));
+}
+
+static void test_async_header_lock_response(struct kunit *test)
+{
+ static const u32 expected[ASYNC_HEADER_QUADLET_COUNT] = {
+ 0xffc12db0,
+ 0xffc00000,
+ 0x00000000,
+ 0x00040002,
+ };
+ u32 header[ASYNC_HEADER_QUADLET_COUNT] = {0, 0, 0, 0};
+
+ unsigned int dst_id;
+ unsigned int tlabel;
+ unsigned int retry;
+ unsigned int tcode;
+ unsigned int priority;
+ unsigned int src_id;
+ unsigned int rcode;
+ unsigned int data_length;
+ unsigned int extended_tcode;
+
+ deserialize_async_header_block_response(expected, &dst_id, &tlabel, &retry, &tcode,
+ &priority, &src_id, &rcode, &data_length,
+ &extended_tcode);
+
+ KUNIT_EXPECT_EQ(test, 0xffc1, dst_id);
+ KUNIT_EXPECT_EQ(test, 0x0b, tlabel);
+ KUNIT_EXPECT_EQ(test, 0x01, retry);
+ KUNIT_EXPECT_EQ(test, TCODE_LOCK_RESPONSE, tcode);
+ KUNIT_EXPECT_EQ(test, 0x00, priority);
+ KUNIT_EXPECT_EQ(test, 0xffc0, src_id);
+ KUNIT_EXPECT_EQ(test, RCODE_COMPLETE, rcode);
+ KUNIT_EXPECT_EQ(test, 0x0004, data_length);
+ KUNIT_EXPECT_EQ(test, EXTCODE_COMPARE_SWAP, extended_tcode);
+
+ serialize_async_header_block_response(header, dst_id, tlabel, retry, tcode, priority,
+ src_id, rcode, data_length, extended_tcode);
+
+ KUNIT_EXPECT_MEMEQ(test, header, expected, sizeof(expected));
+}
+
+
+static struct kunit_case packet_serdes_test_cases[] = {
+ KUNIT_CASE(test_async_header_write_quadlet_request),
+ KUNIT_CASE(test_async_header_write_block_request),
+ KUNIT_CASE(test_async_header_write_response),
+ KUNIT_CASE(test_async_header_read_quadlet_request),
+ KUNIT_CASE(test_async_header_read_quadlet_response),
+ KUNIT_CASE(test_async_header_read_block_request),
+ KUNIT_CASE(test_async_header_read_block_response),
+ KUNIT_CASE(test_async_header_lock_request),
+ KUNIT_CASE(test_async_header_lock_response),
+ {}
+};
+
+static struct kunit_suite packet_serdes_test_suite = {
+ .name = "firewire-packet-serdes",
+ .test_cases = packet_serdes_test_cases,
+};
+kunit_test_suite(packet_serdes_test_suite);
+
+MODULE_LICENSE("GPL");
--
2.43.0
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