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CoolPi-Armbian-Rockchip-RK3.../tools/testing/selftests/sparc64/drivers/adi-test.c

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// SPDX-License-Identifier: GPL-2.0
/*
* selftest for sparc64's privileged ADI driver
*
* Author: Tom Hromatka <tom.hromatka@oracle.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)
/* 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;
}
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