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Date: Thu, 26 Apr 2018 10:25:20 -0600
From: Tom Hromatka <tom.hromatka@...cle.com>
To: Shuah Khan <shuah@...nel.org>, davem@...emloft.net
Cc: sparclinux@...r.kernel.org, arnd@...db.de,
gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org, allen.pais@...cle.com,
khalid.aziz@...cle.com, shannon.nelson@...cle.com,
anthony.yznaga@...cle.com, Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [PATCH v5 2/2] selftests: sparc64: char: Selftest for privileged
ADI driver
On 04/23/2018 03:01 PM, Shuah Khan wrote:
> On 04/23/2018 11:33 AM, Tom Hromatka wrote:
>> Add a selftest for the sparc64 privileged ADI driver. These
>> tests verify the read(), pread(), write(), pwrite(), and seek()
>> functionality of the driver. The tests also report simple
>> performance statistics:
>>
>> Syscall Call AvgTime AvgSize
>> Count (ticks) (bytes)
>> -------------------------------
>> read 3 119638 8133
>> pread 4 118164 6741
>> write 3 339442 8133
>> pwrite 4 280134 6741
>> seek 10 2919 0
>> Pass 8 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0
>>
>> Signed-off-by: Tom Hromatka <tom.hromatka@...cle.com>
>> Reviewed-by: Allen Pais <allen.pais@...cle.com>
>> ---
>> tools/testing/selftests/Makefile | 1 +
>> tools/testing/selftests/sparc64/Makefile | 46 ++
>> tools/testing/selftests/sparc64/drivers/.gitignore | 1 +
>> tools/testing/selftests/sparc64/drivers/Makefile | 15 +
>> tools/testing/selftests/sparc64/drivers/adi-test.c | 721 +++++++++++++++++++++
>> .../selftests/sparc64/drivers/drivers_test.sh | 30 +
>> tools/testing/selftests/sparc64/run.sh | 3 +
>> 7 files changed, 817 insertions(+)
>> create mode 100644 tools/testing/selftests/sparc64/Makefile
>> create mode 100644 tools/testing/selftests/sparc64/drivers/.gitignore
>> create mode 100644 tools/testing/selftests/sparc64/drivers/Makefile
>> create mode 100644 tools/testing/selftests/sparc64/drivers/adi-test.c
>> create mode 100755 tools/testing/selftests/sparc64/drivers/drivers_test.sh
>> create mode 100755 tools/testing/selftests/sparc64/run.sh
>>
>> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
>> index 7442dfb73b7f..94da632579e7 100644
>> --- a/tools/testing/selftests/Makefile
>> +++ b/tools/testing/selftests/Makefile
>> @@ -28,6 +28,7 @@ TARGETS += ptrace
>> TARGETS += seccomp
>> TARGETS += sigaltstack
>> TARGETS += size
>> +TARGETS += sparc64
>> TARGETS += splice
>> TARGETS += static_keys
>> TARGETS += sync
>> diff --git a/tools/testing/selftests/sparc64/Makefile b/tools/testing/selftests/sparc64/Makefile
>> new file mode 100644
>> index 000000000000..2082eeffd779
>> --- /dev/null
>> +++ b/tools/testing/selftests/sparc64/Makefile
>> @@ -0,0 +1,46 @@
>> +SUBDIRS := drivers
>> +
>> +TEST_PROGS := run.sh
>> +
>> +.PHONY: all clean
>> +
>> +include ../lib.mk
>> +
>> +all:
>> + @for DIR in $(SUBDIRS); do \
>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>> + mkdir $$BUILD_TARGET -p; \
>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@;\
>> + #SUBDIR test prog name should be in the form: SUBDIR_test.sh \
>> + TEST=$$DIR"_test.sh"; \
>> + if [ -e $$DIR/$$TEST ]; then \
>> + rsync -a $$DIR/$$TEST $$BUILD_TARGET/; \
>> + fi \
>> + done
>> +
>> +override define RUN_TESTS
>> + @cd $(OUTPUT); ./run.sh
>> +endef
>> +
>> +override define INSTALL_RULE
>> + mkdir -p $(INSTALL_PATH)
>> + install -t $(INSTALL_PATH) $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES)
>> +
>> + @for SUBDIR in $(SUBDIRS); do \
>> + BUILD_TARGET=$(OUTPUT)/$$SUBDIR; \
>> + mkdir $$BUILD_TARGET -p; \
>> + $(MAKE) OUTPUT=$$BUILD_TARGET -C $$SUBDIR INSTALL_PATH=$(INSTALL_PATH)/$$SUBDIR install; \
>> + done;
>> +endef
>> +
>> +override define EMIT_TESTS
>> + echo "./run.sh"
>> +endef
>> +
>> +override define CLEAN
>> + @for DIR in $(SUBDIRS); do \
>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>> + mkdir $$BUILD_TARGET -p; \
>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@;\
>> + done
>> +endef
>> diff --git a/tools/testing/selftests/sparc64/drivers/.gitignore b/tools/testing/selftests/sparc64/drivers/.gitignore
>> new file mode 100644
>> index 000000000000..90e835ed74e6
>> --- /dev/null
>> +++ b/tools/testing/selftests/sparc64/drivers/.gitignore
>> @@ -0,0 +1 @@
>> +adi-test
>> diff --git a/tools/testing/selftests/sparc64/drivers/Makefile b/tools/testing/selftests/sparc64/drivers/Makefile
>> new file mode 100644
>> index 000000000000..6264f40bbdbc
>> --- /dev/null
>> +++ b/tools/testing/selftests/sparc64/drivers/Makefile
>> @@ -0,0 +1,15 @@
>> +
>> +INCLUDEDIR := -I.
>> +CFLAGS := $(CFLAGS) $(INCLUDEDIR) -Wall -O2 -g
>> +
>> +TEST_GEN_FILES := adi-test
>> +
>> +all: $(TEST_GEN_FILES)
>> +
>> +$(TEST_GEN_FILES): adi-test.c
>> +
>> +TEST_PROGS := drivers_test.sh
>> +
>> +include ../../lib.mk
>> +
>> +$(OUTPUT)/adi-test: adi-test.c
>> diff --git a/tools/testing/selftests/sparc64/drivers/adi-test.c b/tools/testing/selftests/sparc64/drivers/adi-test.c
>> new file mode 100644
>> index 000000000000..95d93c6a88a5
>> --- /dev/null
>> +++ b/tools/testing/selftests/sparc64/drivers/adi-test.c
>> @@ -0,0 +1,721 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * selftest for sparc64's privileged ADI driver
>> + *
>> + * Author: Tom Hromatka <tom.hromatka@...cle.com>
>> + */
>> +#include <linux/kernel.h>
>> +#include <errno.h>
>> +#include <fcntl.h>
>> +#include <stdarg.h>
>> +#include <stdio.h>
>> +#include <stdlib.h>
>> +#include <string.h>
>> +#include <sys/syscall.h>
>> +#include <sys/types.h>
>> +#include <sys/stat.h>
>> +#include <unistd.h>
>> +
>> +#include "../../kselftest.h"
>> +
>> +#define DEBUG_LEVEL_1_BIT (0x0001)
>> +#define DEBUG_LEVEL_2_BIT (0x0002)
>> +#define DEBUG_LEVEL_3_BIT (0x0004)
>> +#define DEBUG_LEVEL_4_BIT (0x0008)
>> +#define DEBUG_TIMING_BIT (0x1000)
>> +
>> +#ifndef ARRAY_SIZE
>> +# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
>> +#endif
>> +
>> +/* bit mask of enabled bits to print */
>> +#define DEBUG 0x0001
>> +
>> +#define DEBUG_PRINT_L1(...) debug_print(DEBUG_LEVEL_1_BIT, __VA_ARGS__)
>> +#define DEBUG_PRINT_L2(...) debug_print(DEBUG_LEVEL_2_BIT, __VA_ARGS__)
>> +#define DEBUG_PRINT_L3(...) debug_print(DEBUG_LEVEL_3_BIT, __VA_ARGS__)
>> +#define DEBUG_PRINT_L4(...) debug_print(DEBUG_LEVEL_4_BIT, __VA_ARGS__)
>> +#define DEBUG_PRINT_T(...) debug_print(DEBUG_TIMING_BIT, __VA_ARGS__)
>> +
>> +static void debug_print(int level, const char *s, ...)
>> +{
>> + va_list args;
>> +
>> + va_start(args, s);
>> +
>> + if (DEBUG & level)
>> + vfprintf(stdout, s, args);
>> + va_end(args);
>> +}
>> +
>> +#ifndef min
>> +#define min(x, y) ((x) < (y) ? x : y)
>> +#endif
>> +
>> +#define RETURN_FROM_TEST(_ret) \
>> + do { \
>> + DEBUG_PRINT_L1( \
>> + "\tTest %s returned %d\n", __func__, _ret); \
>> + return _ret; \
>> + } while (0)
>> +
>> +#define ADI_BLKSZ 64
>> +#define ADI_MAX_VERSION 15
>> +
>> +#define TEST_STEP_FAILURE(_ret) \
>> + do { \
>> + fprintf(stderr, "\tTest step failure: %d at %s:%d\n", \
>> + _ret, __func__, __LINE__); \
>> + goto out; \
>> + } while (0)
>> +
>> +#define RDTICK(_x) \
>> + asm volatile(" rd %%tick, %0\n" : "=r" (_x))
>> +
>> +static int random_version(void)
>> +{
>> + long tick;
>> +
>> + RDTICK(tick);
>> +
>> + return tick % (ADI_MAX_VERSION + 1);
>> +}
>> +
>> +#define MAX_RANGES_SUPPORTED 5
>> +static const char system_ram_str[] = "System RAM\n";
>> +static int range_count;
>> +static unsigned long long int start_addr[MAX_RANGES_SUPPORTED];
>> +static unsigned long long int end_addr[MAX_RANGES_SUPPORTED];
>> +
>> +struct stats {
>> + char name[16];
>> + unsigned long total;
>> + unsigned long count;
>> + unsigned long bytes;
>> +};
>> +
>> +static struct stats read_stats = {
>> + .name = "read", .total = 0, .count = 0, .bytes = 0};
>> +static struct stats pread_stats = {
>> + .name = "pread", .total = 0, .count = 0, .bytes = 0};
>> +static struct stats write_stats = {
>> + .name = "write", .total = 0, .count = 0, .bytes = 0};
>> +static struct stats pwrite_stats = {
>> + .name = "pwrite", .total = 0, .count = 0, .bytes = 0};
>> +static struct stats seek_stats = {
>> + .name = "seek", .total = 0, .count = 0, .bytes = 0};
>> +
>> +static void update_stats(struct stats * const ustats,
>> + unsigned long measurement, unsigned long bytes)
>> +{
>> + ustats->total += measurement;
>> + ustats->bytes += bytes;
>> + ustats->count++;
>> +}
>> +
>> +static void print_ustats(const struct stats * const ustats)
>> +{
>> + DEBUG_PRINT_L1("%s\t%7d\t%7.0f\t%7.0f\n",
>> + ustats->name, ustats->count,
>> + (float)ustats->total / (float)ustats->count,
>> + (float)ustats->bytes / (float)ustats->count);
>> +}
>> +
>> +static void print_stats(void)
>> +{
>> + DEBUG_PRINT_L1("\nSyscall\tCall\tAvgTime\tAvgSize\n"
>> + "\tCount\t(ticks)\t(bytes)\n"
>> + "-------------------------------\n");
>> +
>> + print_ustats(&read_stats);
>> + print_ustats(&pread_stats);
>> + print_ustats(&write_stats);
>> + print_ustats(&pwrite_stats);
>> + print_ustats(&seek_stats);
>> +}
>> +
>> +static int build_memory_map(void)
>> +{
>> + char line[256];
>> + FILE *fp;
>> + int i;
>> +
>> + range_count = 0;
>> +
>> + fp = fopen("/proc/iomem", "r");
>> + if (!fp) {
>> + fprintf(stderr, "/proc/iomem: error %d: %s\n",
>> + errno, strerror(errno));
>> + return -errno;
>> + }
>> +
>> + while (fgets(line, sizeof(line), fp) != 0) {
>> + if (strstr(line, system_ram_str)) {
>> + char *dash, *end_ptr;
>> +
>> + /* Given a line like this:
>> + * d0400000-10ffaffff : System RAM
>> + * replace the "-" with a space
>> + */
>> + dash = strstr(line, "-");
>> + dash[0] = 0x20;
>> +
>> + start_addr[range_count] = strtoull(line, &end_ptr, 16);
>> + end_addr[range_count] = strtoull(end_ptr, NULL, 16);
>> + range_count++;
>> + }
>> + }
>> +
>> + fclose(fp);
>> +
>> + DEBUG_PRINT_L1("RAM Ranges\n");
>> + for (i = 0; i < range_count; i++)
>> + DEBUG_PRINT_L1("\trange %d: 0x%llx\t- 0x%llx\n",
>> + i, start_addr[i], end_addr[i]);
>> +
>> + if (range_count == 0) {
>> + fprintf(stderr, "No valid address ranges found. Error.\n");
>> + return -1;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int read_adi(int fd, unsigned char *buf, int buf_sz)
>> +{
>> + int ret, bytes_read = 0;
>> + long start, end, elapsed_time = 0;
>> +
>> + do {
>> + RDTICK(start);
>> + ret = read(fd, buf + bytes_read, buf_sz - bytes_read);
>> + RDTICK(end);
>> + if (ret < 0)
>> + return -errno;
>> +
>> + elapsed_time += end - start;
>> + update_stats(&read_stats, elapsed_time, buf_sz);
>> + bytes_read += ret;
>> +
>> + } while (bytes_read < buf_sz);
>> +
>> + DEBUG_PRINT_T("\tread elapsed timed = %ld\n", elapsed_time);
>> + DEBUG_PRINT_L3("\tRead %d bytes\n", bytes_read);
>> +
>> + return bytes_read;
>> +}
>> +
>> +static int pread_adi(int fd, unsigned char *buf,
>> + int buf_sz, unsigned long offset)
>> +{
>> + int ret, i, bytes_read = 0;
>> + unsigned long cur_offset;
>> + long start, end, elapsed_time = 0;
>> +
>> + cur_offset = offset;
>> + do {
>> + RDTICK(start);
>> + ret = pread(fd, buf + bytes_read, buf_sz - bytes_read,
>> + cur_offset);
>> + RDTICK(end);
>> + if (ret < 0)
>> + return -errno;
>> +
>> + elapsed_time += end - start;
>> + update_stats(&pread_stats, elapsed_time, buf_sz);
>> + bytes_read += ret;
>> + cur_offset += ret;
>> +
>> + } while (bytes_read < buf_sz);
>> +
>> + DEBUG_PRINT_T("\tpread elapsed timed = %ld\n", elapsed_time);
>> + DEBUG_PRINT_L3("\tRead %d bytes starting at offset 0x%lx\n",
>> + bytes_read, offset);
>> + for (i = 0; i < bytes_read; i++)
>> + DEBUG_PRINT_L4("\t\t0x%lx\t%d\n", offset + i, buf[i]);
>> +
>> + return bytes_read;
>> +}
>> +
>> +static int write_adi(int fd, const unsigned char * const buf, int buf_sz)
>> +{
>> + int ret, bytes_written = 0;
>> + long start, end, elapsed_time = 0;
>> +
>> + do {
>> + RDTICK(start);
>> + ret = write(fd, buf + bytes_written, buf_sz - bytes_written);
>> + RDTICK(end);
>> + if (ret < 0)
>> + return -errno;
>> +
>> + elapsed_time += (end - start);
>> + update_stats(&write_stats, elapsed_time, buf_sz);
>> + bytes_written += ret;
>> + } while (bytes_written < buf_sz);
>> +
>> + DEBUG_PRINT_T("\twrite elapsed timed = %ld\n", elapsed_time);
>> + DEBUG_PRINT_L3("\tWrote %d of %d bytes\n", bytes_written, buf_sz);
>> +
>> + return bytes_written;
>> +}
>> +
>> +static int pwrite_adi(int fd, const unsigned char * const buf,
>> + int buf_sz, unsigned long offset)
>> +{
>> + int ret, bytes_written = 0;
>> + unsigned long cur_offset;
>> + long start, end, elapsed_time = 0;
>> +
>> + cur_offset = offset;
>> +
>> + do {
>> + RDTICK(start);
>> + ret = pwrite(fd, buf + bytes_written,
>> + buf_sz - bytes_written, cur_offset);
>> + RDTICK(end);
>> + if (ret < 0) {
>> + fprintf(stderr, "pwrite(): error %d: %s\n",
>> + errno, strerror(errno));
>> + return -errno;
>> + }
>> +
>> + elapsed_time += (end - start);
>> + update_stats(&pwrite_stats, elapsed_time, buf_sz);
>> + bytes_written += ret;
>> + cur_offset += ret;
>> +
>> + } while (bytes_written < buf_sz);
>> +
>> + DEBUG_PRINT_T("\tpwrite elapsed timed = %ld\n", elapsed_time);
>> + DEBUG_PRINT_L3("\tWrote %d of %d bytes starting at address 0x%lx\n",
>> + bytes_written, buf_sz, offset);
>> +
>> + return bytes_written;
>> +}
>> +
>> +static off_t seek_adi(int fd, off_t offset, int whence)
>> +{
>> + long start, end;
>> + off_t ret;
>> +
>> + RDTICK(start);
>> + ret = lseek(fd, offset, whence);
>> + RDTICK(end);
>> + DEBUG_PRINT_L2("\tlseek ret = 0x%llx\n", ret);
>> + if (ret < 0)
>> + goto out;
>> +
>> + DEBUG_PRINT_T("\tlseek elapsed timed = %ld\n", end - start);
>> + update_stats(&seek_stats, end - start, 0);
>> +
>> +out:
>> + (void)lseek(fd, 0, SEEK_END);
>> + return ret;
>> +}
>> +
>> +static int test0_prpw_aligned_1byte(int fd)
>> +{
>> + /* somewhat arbitrarily chosen address */
>> + unsigned long paddr =
>> + (end_addr[range_count - 1] - 0x1000) & ~(ADI_BLKSZ - 1);
>> + unsigned char version[1], expected_version;
>> + loff_t offset;
>> + int ret;
>> +
>> + version[0] = random_version();
>> + expected_version = version[0];
>> +
>> + offset = paddr / ADI_BLKSZ;
>> +
>> + ret = pwrite_adi(fd, version, sizeof(version), offset);
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + ret = pread_adi(fd, version, sizeof(version), offset);
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + if (expected_version != version[0]) {
>> + DEBUG_PRINT_L2("\tExpected version %d but read version %d\n",
>> + expected_version, version[0]);
>> + TEST_STEP_FAILURE(-expected_version);
>> + }
>> +
>> + ret = 0;
>> +out:
>> + RETURN_FROM_TEST(ret);
>> +}
>> +
>> +#define TEST1_VERSION_SZ 4096
>> +static int test1_prpw_aligned_4096bytes(int fd)
>> +{
>> + /* somewhat arbitrarily chosen address */
>> + unsigned long paddr =
>> + (end_addr[range_count - 1] - 0x6000) & ~(ADI_BLKSZ - 1);
>> + unsigned char version[TEST1_VERSION_SZ],
>> + expected_version[TEST1_VERSION_SZ];
>> + loff_t offset;
>> + int ret, i;
>> +
>> + for (i = 0; i < TEST1_VERSION_SZ; i++) {
>> + version[i] = random_version();
>> + expected_version[i] = version[i];
>> + }
>> +
>> + offset = paddr / ADI_BLKSZ;
>> +
>> + ret = pwrite_adi(fd, version, sizeof(version), offset);
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + ret = pread_adi(fd, version, sizeof(version), offset);
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + for (i = 0; i < TEST1_VERSION_SZ; i++) {
>> + if (expected_version[i] != version[i]) {
>> + DEBUG_PRINT_L2(
>> + "\tExpected version %d but read version %d\n",
>> + expected_version, version[0]);
>> + TEST_STEP_FAILURE(-expected_version[i]);
>> + }
>> + }
>> +
>> + ret = 0;
>> +out:
>> + RETURN_FROM_TEST(ret);
>> +}
>> +
>> +#define TEST2_VERSION_SZ 10327
>> +static int test2_prpw_aligned_10327bytes(int fd)
>> +{
>> + /* somewhat arbitrarily chosen address */
>> + unsigned long paddr =
>> + (start_addr[0] + 0x6000) & ~(ADI_BLKSZ - 1);
>> + unsigned char version[TEST2_VERSION_SZ],
>> + expected_version[TEST2_VERSION_SZ];
>> + loff_t offset;
>> + int ret, i;
>> +
>> + for (i = 0; i < TEST2_VERSION_SZ; i++) {
>> + version[i] = random_version();
>> + expected_version[i] = version[i];
>> + }
>> +
>> + offset = paddr / ADI_BLKSZ;
>> +
>> + ret = pwrite_adi(fd, version, sizeof(version), offset);
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + ret = pread_adi(fd, version, sizeof(version), offset);
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + for (i = 0; i < TEST2_VERSION_SZ; i++) {
>> + if (expected_version[i] != version[i]) {
>> + DEBUG_PRINT_L2(
>> + "\tExpected version %d but read version %d\n",
>> + expected_version, version[0]);
>> + TEST_STEP_FAILURE(-expected_version[i]);
>> + }
>> + }
>> +
>> + ret = 0;
>> +out:
>> + RETURN_FROM_TEST(ret);
>> +}
>> +
>> +#define TEST3_VERSION_SZ 12541
>> +static int test3_prpw_unaligned_12541bytes(int fd)
>> +{
>> + /* somewhat arbitrarily chosen address */
>> + unsigned long paddr =
>> + ((start_addr[0] + 0xC000) & ~(ADI_BLKSZ - 1)) + 17;
>> + unsigned char version[TEST3_VERSION_SZ],
>> + expected_version[TEST3_VERSION_SZ];
>> + loff_t offset;
>> + int ret, i;
>> +
>> + for (i = 0; i < TEST3_VERSION_SZ; i++) {
>> + version[i] = random_version();
>> + expected_version[i] = version[i];
>> + }
>> +
>> + offset = paddr / ADI_BLKSZ;
>> +
>> + ret = pwrite_adi(fd, version, sizeof(version), offset);
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + ret = pread_adi(fd, version, sizeof(version), offset);
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + for (i = 0; i < TEST3_VERSION_SZ; i++) {
>> + if (expected_version[i] != version[i]) {
>> + DEBUG_PRINT_L2(
>> + "\tExpected version %d but read version %d\n",
>> + expected_version, version[0]);
>> + TEST_STEP_FAILURE(-expected_version[i]);
>> + }
>> + }
>> +
>> + ret = 0;
>> +out:
>> + RETURN_FROM_TEST(ret);
>> +}
>> +
>> +static int test4_lseek(int fd)
>> +{
>> +#define OFFSET_ADD (0x100)
>> +#define OFFSET_SUBTRACT (0xFFFFFFF000000000)
>> +
>> + off_t offset_out, offset_in;
>> + int ret;
>> +
>> +
>> + offset_in = 0x123456789abcdef0;
>> + offset_out = seek_adi(fd, offset_in, SEEK_SET);
>> + if (offset_out != offset_in) {
>> + ret = -1;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + /* seek to the current offset. this should return EINVAL */
>> + offset_out = seek_adi(fd, offset_in, SEEK_SET);
>> + if (offset_out < 0 && errno == EINVAL)
>> + DEBUG_PRINT_L2(
>> + "\tSEEK_SET failed as designed. Not an error\n");
>> + else {
>> + ret = -2;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + offset_out = seek_adi(fd, 0, SEEK_CUR);
>> + if (offset_out != offset_in) {
>> + ret = -3;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + offset_out = seek_adi(fd, OFFSET_ADD, SEEK_CUR);
>> + if (offset_out != (offset_in + OFFSET_ADD)) {
>> + ret = -4;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + offset_out = seek_adi(fd, OFFSET_SUBTRACT, SEEK_CUR);
>> + if (offset_out != (offset_in + OFFSET_ADD + OFFSET_SUBTRACT)) {
>> + ret = -5;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + ret = 0;
>> +out:
>> + RETURN_FROM_TEST(ret);
>> +}
>> +
>> +static int test5_rw_aligned_1byte(int fd)
>> +{
>> + /* somewhat arbitrarily chosen address */
>> + unsigned long paddr =
>> + (end_addr[range_count - 1] - 0xF000) & ~(ADI_BLKSZ - 1);
>> + unsigned char version, expected_version;
>> + loff_t offset;
>> + off_t oret;
>> + int ret;
>> +
>> + offset = paddr / ADI_BLKSZ;
>> + version = expected_version = random_version();
>> +
>> + oret = seek_adi(fd, offset, SEEK_SET);
>> + if (oret != offset) {
>> + ret = -1;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + ret = write_adi(fd, &version, sizeof(version));
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + oret = seek_adi(fd, offset, SEEK_SET);
>> + if (oret != offset) {
>> + ret = -1;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + ret = read_adi(fd, &version, sizeof(version));
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + if (expected_version != version) {
>> + DEBUG_PRINT_L2("\tExpected version %d but read version %d\n",
>> + expected_version, version);
>> + TEST_STEP_FAILURE(-expected_version);
>> + }
>> +
>> + ret = 0;
>> +out:
>> + RETURN_FROM_TEST(ret);
>> +}
>> +
>> +#define TEST6_VERSION_SZ 9434
>> +static int test6_rw_aligned_9434bytes(int fd)
>> +{
>> + /* somewhat arbitrarily chosen address */
>> + unsigned long paddr =
>> + (end_addr[range_count - 1] - 0x5F000) & ~(ADI_BLKSZ - 1);
>> + unsigned char version[TEST6_VERSION_SZ],
>> + expected_version[TEST6_VERSION_SZ];
>> + loff_t offset;
>> + off_t oret;
>> + int ret, i;
>> +
>> + offset = paddr / ADI_BLKSZ;
>> + for (i = 0; i < TEST6_VERSION_SZ; i++)
>> + version[i] = expected_version[i] = random_version();
>> +
>> + oret = seek_adi(fd, offset, SEEK_SET);
>> + if (oret != offset) {
>> + ret = -1;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + ret = write_adi(fd, version, sizeof(version));
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + memset(version, 0, TEST6_VERSION_SZ);
>> +
>> + oret = seek_adi(fd, offset, SEEK_SET);
>> + if (oret != offset) {
>> + ret = -1;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + ret = read_adi(fd, version, sizeof(version));
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + for (i = 0; i < TEST6_VERSION_SZ; i++) {
>> + if (expected_version[i] != version[i]) {
>> + DEBUG_PRINT_L2(
>> + "\tExpected version %d but read version %d\n",
>> + expected_version[i], version[i]);
>> + TEST_STEP_FAILURE(-expected_version[i]);
>> + }
>> + }
>> +
>> + ret = 0;
>> +out:
>> + RETURN_FROM_TEST(ret);
>> +}
>> +
>> +#define TEST7_VERSION_SZ 14963
>> +static int test7_rw_aligned_14963bytes(int fd)
>> +{
>> + /* somewhat arbitrarily chosen address */
>> + unsigned long paddr =
>> + ((start_addr[range_count - 1] + 0xF000) & ~(ADI_BLKSZ - 1)) + 39;
>> + unsigned char version[TEST7_VERSION_SZ],
>> + expected_version[TEST7_VERSION_SZ];
>> + loff_t offset;
>> + off_t oret;
>> + int ret, i;
>> +
>> + offset = paddr / ADI_BLKSZ;
>> + for (i = 0; i < TEST7_VERSION_SZ; i++) {
>> + version[i] = random_version();
>> + expected_version[i] = version[i];
>> + }
>> +
>> + oret = seek_adi(fd, offset, SEEK_SET);
>> + if (oret != offset) {
>> + ret = -1;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + ret = write_adi(fd, version, sizeof(version));
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + memset(version, 0, TEST7_VERSION_SZ);
>> +
>> + oret = seek_adi(fd, offset, SEEK_SET);
>> + if (oret != offset) {
>> + ret = -1;
>> + TEST_STEP_FAILURE(ret);
>> + }
>> +
>> + ret = read_adi(fd, version, sizeof(version));
>> + if (ret != sizeof(version))
>> + TEST_STEP_FAILURE(ret);
>> +
>> + for (i = 0; i < TEST7_VERSION_SZ; i++) {
>> + if (expected_version[i] != version[i]) {
>> + DEBUG_PRINT_L2(
>> + "\tExpected version %d but read version %d\n",
>> + expected_version[i], version[i]);
>> + TEST_STEP_FAILURE(-expected_version[i]);
>> + }
>> +
>> + paddr += ADI_BLKSZ;
>> + }
>> +
>> + ret = 0;
>> +out:
>> + RETURN_FROM_TEST(ret);
>> +}
>> +
>> +static int (*tests[])(int fd) = {
>> + test0_prpw_aligned_1byte,
>> + test1_prpw_aligned_4096bytes,
>> + test2_prpw_aligned_10327bytes,
>> + test3_prpw_unaligned_12541bytes,
>> + test4_lseek,
>> + test5_rw_aligned_1byte,
>> + test6_rw_aligned_9434bytes,
>> + test7_rw_aligned_14963bytes,
>> +};
>> +#define TEST_COUNT ARRAY_SIZE(tests)
>> +
>> +int main(int argc, char *argv[])
>> +{
>> + int fd, ret, test;
>> +
>> + ret = build_memory_map();
>> + if (ret < 0)
>> + return ret;
>> +
>> + fd = open("/dev/adi", O_RDWR);
>> + if (fd < 0) {
>> + fprintf(stderr, "open: error %d: %s\n",
>> + errno, strerror(errno));
>> + return -errno;
>> + }
>> +
>> + for (test = 0; test < TEST_COUNT; test++) {
>> + DEBUG_PRINT_L1("Running test #%d\n", test);
>> +
>> + ret = (*tests[test])(fd);
>> + if (ret != 0)
>> + ksft_test_result_fail("Test #%d failed: error %d\n",
>> + test, ret);
>> + else
>> + ksft_test_result_pass("Test #%d passed\n", test);
>> + }
>> +
>> + print_stats();
>> + close(fd);
>> +
>> + if (ksft_get_fail_cnt() > 0)
>> + ksft_exit_fail();
>> + else
>> + ksft_exit_pass();
>> +
>> + /* it's impossible to get here, but the compiler throws a warning
>> + * about control reaching the end of non-void function. bah.
>> + */
>> + return 0;
>> +}
>> diff --git a/tools/testing/selftests/sparc64/drivers/drivers_test.sh b/tools/testing/selftests/sparc64/drivers/drivers_test.sh
>> new file mode 100755
>> index 000000000000..6d08273b7532
>> --- /dev/null
>> +++ b/tools/testing/selftests/sparc64/drivers/drivers_test.sh
>> @@ -0,0 +1,30 @@
>> +#!/bin/sh
>> +# SPDX-License-Identifier: GPL-2.0
>> +
>> +SRC_TREE=../../../../
>> +
>> +test_run()
>> +{
>> + if [ -f ${SRC_TREE}/drivers/char/adi.ko ]; then
>> + insmod ${SRC_TREE}/drivers/char/adi.ko 2> /dev/null
>> + if [ $? -ne 0 ]; then
>> + rc=1
>> + fi
>> + else
>> + # Use modprobe dry run to check for missing adi module
>> + if ! /sbin/modprobe -q -n adi; then
>> + echo "adi: [SKIP]"
>> + elif /sbin/modprobe -q adi; then
>> + echo "adi: ok"
>> + else
>> + echo "adi: [FAIL]"
>> + rc=1
>> + fi
>> + fi
>> + ./adi-test
>> + rmmod adi 2> /dev/null
>> +}
>> +
>> +rc=0
>> +test_run
>> +exit $rc
>> diff --git a/tools/testing/selftests/sparc64/run.sh b/tools/testing/selftests/sparc64/run.sh
>> new file mode 100755
>> index 000000000000..38ad61f9328e
>> --- /dev/null
>> +++ b/tools/testing/selftests/sparc64/run.sh
>> @@ -0,0 +1,3 @@
>> +#!/bin/sh
>> +
>> +(cd drivers; ./drivers_test.sh)
>>
> Does this test need to be run as root? If so, a check for non-root run
> to skip test will be a good idea. This can be done later as a separate
> patch.
Yes, good catch. Thank you.
>
> Assuming this patch is going through Sparc tree:
>
> Reviewed-by: Shuah Khan (Samsung OSG) <shuah@...nel.org>
Awesome! Thanks so much for your help.
Regards.
Tom
>
> thanks,
> -- Shuah
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