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Date: Mon, 23 Apr 2018 15:01:53 -0600
From: Shuah Khan <shuah@...nel.org>
To: Tom Hromatka <tom.hromatka@...cle.com>, 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 <shuah@...nel.org>,
Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [PATCH v5 2/2] selftests: sparc64: char: Selftest for privileged
ADI driver
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.
Assuming this patch is going through Sparc tree:
Reviewed-by: Shuah Khan (Samsung OSG) <shuah@...nel.org>
thanks,
-- Shuah
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