718 lines
16 KiB
C
718 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* selftest for sparc64's privileged ADI driver
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*
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* Author: Tom Hromatka <tom.hromatka@oracle.com>
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*/
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#include <linux/kernel.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/syscall.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "../../kselftest.h"
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#define DEBUG_LEVEL_1_BIT (0x0001)
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#define DEBUG_LEVEL_2_BIT (0x0002)
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#define DEBUG_LEVEL_3_BIT (0x0004)
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#define DEBUG_LEVEL_4_BIT (0x0008)
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#define DEBUG_TIMING_BIT (0x1000)
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/* bit mask of enabled bits to print */
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#define DEBUG 0x0001
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#define DEBUG_PRINT_L1(...) debug_print(DEBUG_LEVEL_1_BIT, __VA_ARGS__)
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#define DEBUG_PRINT_L2(...) debug_print(DEBUG_LEVEL_2_BIT, __VA_ARGS__)
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#define DEBUG_PRINT_L3(...) debug_print(DEBUG_LEVEL_3_BIT, __VA_ARGS__)
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#define DEBUG_PRINT_L4(...) debug_print(DEBUG_LEVEL_4_BIT, __VA_ARGS__)
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#define DEBUG_PRINT_T(...) debug_print(DEBUG_TIMING_BIT, __VA_ARGS__)
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static void debug_print(int level, const char *s, ...)
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{
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va_list args;
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va_start(args, s);
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if (DEBUG & level)
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vfprintf(stdout, s, args);
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va_end(args);
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}
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#ifndef min
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#define min(x, y) ((x) < (y) ? x : y)
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#endif
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#define RETURN_FROM_TEST(_ret) \
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do { \
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DEBUG_PRINT_L1( \
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"\tTest %s returned %d\n", __func__, _ret); \
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return _ret; \
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} while (0)
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#define ADI_BLKSZ 64
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#define ADI_MAX_VERSION 15
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#define TEST_STEP_FAILURE(_ret) \
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do { \
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fprintf(stderr, "\tTest step failure: %d at %s:%d\n", \
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_ret, __func__, __LINE__); \
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goto out; \
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} while (0)
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#define RDTICK(_x) \
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asm volatile(" rd %%tick, %0\n" : "=r" (_x))
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static int random_version(void)
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{
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long tick;
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RDTICK(tick);
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return tick % (ADI_MAX_VERSION + 1);
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}
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#define MAX_RANGES_SUPPORTED 5
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static const char system_ram_str[] = "System RAM\n";
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static int range_count;
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static unsigned long long int start_addr[MAX_RANGES_SUPPORTED];
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static unsigned long long int end_addr[MAX_RANGES_SUPPORTED];
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struct stats {
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char name[16];
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unsigned long total;
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unsigned long count;
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unsigned long bytes;
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};
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static struct stats read_stats = {
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.name = "read", .total = 0, .count = 0, .bytes = 0};
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static struct stats pread_stats = {
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.name = "pread", .total = 0, .count = 0, .bytes = 0};
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static struct stats write_stats = {
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.name = "write", .total = 0, .count = 0, .bytes = 0};
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static struct stats pwrite_stats = {
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.name = "pwrite", .total = 0, .count = 0, .bytes = 0};
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static struct stats seek_stats = {
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.name = "seek", .total = 0, .count = 0, .bytes = 0};
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static void update_stats(struct stats * const ustats,
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unsigned long measurement, unsigned long bytes)
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{
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ustats->total += measurement;
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ustats->bytes += bytes;
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ustats->count++;
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}
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static void print_ustats(const struct stats * const ustats)
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{
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DEBUG_PRINT_L1("%s\t%7d\t%7.0f\t%7.0f\n",
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ustats->name, ustats->count,
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(float)ustats->total / (float)ustats->count,
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(float)ustats->bytes / (float)ustats->count);
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}
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static void print_stats(void)
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{
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DEBUG_PRINT_L1("\nSyscall\tCall\tAvgTime\tAvgSize\n"
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"\tCount\t(ticks)\t(bytes)\n"
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"-------------------------------\n");
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print_ustats(&read_stats);
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print_ustats(&pread_stats);
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print_ustats(&write_stats);
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print_ustats(&pwrite_stats);
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print_ustats(&seek_stats);
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}
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static int build_memory_map(void)
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{
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char line[256];
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FILE *fp;
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int i;
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range_count = 0;
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fp = fopen("/proc/iomem", "r");
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if (!fp) {
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fprintf(stderr, "/proc/iomem: error %d: %s\n",
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errno, strerror(errno));
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return -errno;
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}
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while (fgets(line, sizeof(line), fp) != 0) {
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if (strstr(line, system_ram_str)) {
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char *dash, *end_ptr;
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/* Given a line like this:
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* d0400000-10ffaffff : System RAM
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* replace the "-" with a space
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*/
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dash = strstr(line, "-");
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dash[0] = 0x20;
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start_addr[range_count] = strtoull(line, &end_ptr, 16);
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end_addr[range_count] = strtoull(end_ptr, NULL, 16);
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range_count++;
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}
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}
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fclose(fp);
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DEBUG_PRINT_L1("RAM Ranges\n");
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for (i = 0; i < range_count; i++)
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DEBUG_PRINT_L1("\trange %d: 0x%llx\t- 0x%llx\n",
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i, start_addr[i], end_addr[i]);
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if (range_count == 0) {
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fprintf(stderr, "No valid address ranges found. Error.\n");
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return -1;
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}
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return 0;
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}
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static int read_adi(int fd, unsigned char *buf, int buf_sz)
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{
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int ret, bytes_read = 0;
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long start, end, elapsed_time = 0;
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do {
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RDTICK(start);
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ret = read(fd, buf + bytes_read, buf_sz - bytes_read);
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RDTICK(end);
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if (ret < 0)
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return -errno;
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elapsed_time += end - start;
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update_stats(&read_stats, elapsed_time, buf_sz);
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bytes_read += ret;
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} while (bytes_read < buf_sz);
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DEBUG_PRINT_T("\tread elapsed timed = %ld\n", elapsed_time);
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DEBUG_PRINT_L3("\tRead %d bytes\n", bytes_read);
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return bytes_read;
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}
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static int pread_adi(int fd, unsigned char *buf,
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int buf_sz, unsigned long offset)
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{
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int ret, i, bytes_read = 0;
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unsigned long cur_offset;
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long start, end, elapsed_time = 0;
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cur_offset = offset;
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do {
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RDTICK(start);
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ret = pread(fd, buf + bytes_read, buf_sz - bytes_read,
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cur_offset);
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RDTICK(end);
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if (ret < 0)
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return -errno;
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elapsed_time += end - start;
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update_stats(&pread_stats, elapsed_time, buf_sz);
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bytes_read += ret;
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cur_offset += ret;
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} while (bytes_read < buf_sz);
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DEBUG_PRINT_T("\tpread elapsed timed = %ld\n", elapsed_time);
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DEBUG_PRINT_L3("\tRead %d bytes starting at offset 0x%lx\n",
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bytes_read, offset);
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for (i = 0; i < bytes_read; i++)
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DEBUG_PRINT_L4("\t\t0x%lx\t%d\n", offset + i, buf[i]);
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return bytes_read;
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}
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static int write_adi(int fd, const unsigned char * const buf, int buf_sz)
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{
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int ret, bytes_written = 0;
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long start, end, elapsed_time = 0;
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do {
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RDTICK(start);
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ret = write(fd, buf + bytes_written, buf_sz - bytes_written);
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RDTICK(end);
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if (ret < 0)
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return -errno;
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elapsed_time += (end - start);
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update_stats(&write_stats, elapsed_time, buf_sz);
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bytes_written += ret;
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} while (bytes_written < buf_sz);
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DEBUG_PRINT_T("\twrite elapsed timed = %ld\n", elapsed_time);
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DEBUG_PRINT_L3("\tWrote %d of %d bytes\n", bytes_written, buf_sz);
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return bytes_written;
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}
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static int pwrite_adi(int fd, const unsigned char * const buf,
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int buf_sz, unsigned long offset)
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{
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int ret, bytes_written = 0;
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unsigned long cur_offset;
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long start, end, elapsed_time = 0;
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cur_offset = offset;
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do {
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RDTICK(start);
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ret = pwrite(fd, buf + bytes_written,
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buf_sz - bytes_written, cur_offset);
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RDTICK(end);
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if (ret < 0) {
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fprintf(stderr, "pwrite(): error %d: %s\n",
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errno, strerror(errno));
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return -errno;
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}
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elapsed_time += (end - start);
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update_stats(&pwrite_stats, elapsed_time, buf_sz);
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bytes_written += ret;
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cur_offset += ret;
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} while (bytes_written < buf_sz);
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DEBUG_PRINT_T("\tpwrite elapsed timed = %ld\n", elapsed_time);
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DEBUG_PRINT_L3("\tWrote %d of %d bytes starting at address 0x%lx\n",
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bytes_written, buf_sz, offset);
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return bytes_written;
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}
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static off_t seek_adi(int fd, off_t offset, int whence)
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{
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long start, end;
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off_t ret;
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RDTICK(start);
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ret = lseek(fd, offset, whence);
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RDTICK(end);
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DEBUG_PRINT_L2("\tlseek ret = 0x%llx\n", ret);
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if (ret < 0)
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goto out;
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DEBUG_PRINT_T("\tlseek elapsed timed = %ld\n", end - start);
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update_stats(&seek_stats, end - start, 0);
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out:
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(void)lseek(fd, 0, SEEK_END);
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return ret;
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}
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static int test0_prpw_aligned_1byte(int fd)
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{
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/* somewhat arbitrarily chosen address */
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unsigned long paddr =
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(end_addr[range_count - 1] - 0x1000) & ~(ADI_BLKSZ - 1);
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unsigned char version[1], expected_version;
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loff_t offset;
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int ret;
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version[0] = random_version();
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expected_version = version[0];
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offset = paddr / ADI_BLKSZ;
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ret = pwrite_adi(fd, version, sizeof(version), offset);
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if (ret != sizeof(version))
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TEST_STEP_FAILURE(ret);
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ret = pread_adi(fd, version, sizeof(version), offset);
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if (ret != sizeof(version))
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TEST_STEP_FAILURE(ret);
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if (expected_version != version[0]) {
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DEBUG_PRINT_L2("\tExpected version %d but read version %d\n",
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expected_version, version[0]);
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TEST_STEP_FAILURE(-expected_version);
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}
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ret = 0;
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out:
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RETURN_FROM_TEST(ret);
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}
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#define TEST1_VERSION_SZ 4096
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static int test1_prpw_aligned_4096bytes(int fd)
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{
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/* somewhat arbitrarily chosen address */
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unsigned long paddr =
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(end_addr[range_count - 1] - 0x6000) & ~(ADI_BLKSZ - 1);
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unsigned char version[TEST1_VERSION_SZ],
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expected_version[TEST1_VERSION_SZ];
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loff_t offset;
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int ret, i;
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for (i = 0; i < TEST1_VERSION_SZ; i++) {
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version[i] = random_version();
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expected_version[i] = version[i];
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}
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offset = paddr / ADI_BLKSZ;
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ret = pwrite_adi(fd, version, sizeof(version), offset);
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if (ret != sizeof(version))
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TEST_STEP_FAILURE(ret);
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ret = pread_adi(fd, version, sizeof(version), offset);
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if (ret != sizeof(version))
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TEST_STEP_FAILURE(ret);
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for (i = 0; i < TEST1_VERSION_SZ; i++) {
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if (expected_version[i] != version[i]) {
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DEBUG_PRINT_L2(
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"\tExpected version %d but read version %d\n",
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expected_version, version[0]);
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TEST_STEP_FAILURE(-expected_version[i]);
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}
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}
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ret = 0;
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out:
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RETURN_FROM_TEST(ret);
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}
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#define TEST2_VERSION_SZ 10327
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static int test2_prpw_aligned_10327bytes(int fd)
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{
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/* somewhat arbitrarily chosen address */
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unsigned long paddr =
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(start_addr[0] + 0x6000) & ~(ADI_BLKSZ - 1);
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unsigned char version[TEST2_VERSION_SZ],
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expected_version[TEST2_VERSION_SZ];
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loff_t offset;
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int ret, i;
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for (i = 0; i < TEST2_VERSION_SZ; i++) {
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version[i] = random_version();
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expected_version[i] = version[i];
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}
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offset = paddr / ADI_BLKSZ;
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ret = pwrite_adi(fd, version, sizeof(version), offset);
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if (ret != sizeof(version))
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TEST_STEP_FAILURE(ret);
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ret = pread_adi(fd, version, sizeof(version), offset);
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if (ret != sizeof(version))
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TEST_STEP_FAILURE(ret);
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for (i = 0; i < TEST2_VERSION_SZ; i++) {
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if (expected_version[i] != version[i]) {
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DEBUG_PRINT_L2(
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"\tExpected version %d but read version %d\n",
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expected_version, version[0]);
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TEST_STEP_FAILURE(-expected_version[i]);
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}
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}
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ret = 0;
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out:
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RETURN_FROM_TEST(ret);
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}
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#define TEST3_VERSION_SZ 12541
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static int test3_prpw_unaligned_12541bytes(int fd)
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{
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/* somewhat arbitrarily chosen address */
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unsigned long paddr =
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((start_addr[0] + 0xC000) & ~(ADI_BLKSZ - 1)) + 17;
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unsigned char version[TEST3_VERSION_SZ],
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expected_version[TEST3_VERSION_SZ];
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loff_t offset;
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int ret, i;
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for (i = 0; i < TEST3_VERSION_SZ; i++) {
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version[i] = random_version();
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expected_version[i] = version[i];
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}
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offset = paddr / ADI_BLKSZ;
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ret = pwrite_adi(fd, version, sizeof(version), offset);
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if (ret != sizeof(version))
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TEST_STEP_FAILURE(ret);
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ret = pread_adi(fd, version, sizeof(version), offset);
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if (ret != sizeof(version))
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TEST_STEP_FAILURE(ret);
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for (i = 0; i < TEST3_VERSION_SZ; i++) {
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if (expected_version[i] != version[i]) {
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DEBUG_PRINT_L2(
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"\tExpected version %d but read version %d\n",
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expected_version, version[0]);
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TEST_STEP_FAILURE(-expected_version[i]);
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}
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}
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ret = 0;
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out:
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RETURN_FROM_TEST(ret);
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}
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static int test4_lseek(int fd)
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{
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#define OFFSET_ADD (0x100)
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#define OFFSET_SUBTRACT (0xFFFFFFF000000000)
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off_t offset_out, offset_in;
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int ret;
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offset_in = 0x123456789abcdef0;
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offset_out = seek_adi(fd, offset_in, SEEK_SET);
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if (offset_out != offset_in) {
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ret = -1;
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TEST_STEP_FAILURE(ret);
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}
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/* seek to the current offset. this should return EINVAL */
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offset_out = seek_adi(fd, offset_in, SEEK_SET);
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if (offset_out < 0 && errno == EINVAL)
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DEBUG_PRINT_L2(
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"\tSEEK_SET failed as designed. Not an error\n");
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else {
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ret = -2;
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TEST_STEP_FAILURE(ret);
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}
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offset_out = seek_adi(fd, 0, SEEK_CUR);
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if (offset_out != offset_in) {
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ret = -3;
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TEST_STEP_FAILURE(ret);
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}
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offset_out = seek_adi(fd, OFFSET_ADD, SEEK_CUR);
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if (offset_out != (offset_in + OFFSET_ADD)) {
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ret = -4;
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TEST_STEP_FAILURE(ret);
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}
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offset_out = seek_adi(fd, OFFSET_SUBTRACT, SEEK_CUR);
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if (offset_out != (offset_in + OFFSET_ADD + OFFSET_SUBTRACT)) {
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ret = -5;
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TEST_STEP_FAILURE(ret);
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}
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ret = 0;
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out:
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RETURN_FROM_TEST(ret);
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}
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static int test5_rw_aligned_1byte(int fd)
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{
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/* somewhat arbitrarily chosen address */
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unsigned long paddr =
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(end_addr[range_count - 1] - 0xF000) & ~(ADI_BLKSZ - 1);
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unsigned char version, expected_version;
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loff_t offset;
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off_t oret;
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int ret;
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offset = paddr / ADI_BLKSZ;
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version = expected_version = random_version();
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oret = seek_adi(fd, offset, SEEK_SET);
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if (oret != offset) {
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ret = -1;
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TEST_STEP_FAILURE(ret);
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}
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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;
|
|
}
|