mirror of
https://gitlab.com/qemu-project/qemu
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355 lines
8.1 KiB
C
355 lines
8.1 KiB
C
![]() |
/*
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* Test Server
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*
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* Copyright IBM, Corp. 2011
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qtest.h"
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#include "qemu-char.h"
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#include "ioport.h"
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#include "memory.h"
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#include "hw/irq.h"
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#include "sysemu.h"
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#define MAX_IRQ 256
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const char *qtest_chrdev;
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const char *qtest_log;
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int qtest_allowed = 0;
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static FILE *qtest_log_fp;
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static CharDriverState *qtest_chr;
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static GString *inbuf;
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static int irq_levels[MAX_IRQ];
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static struct timeval start_time;
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static bool qtest_opened;
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#define FMT_timeval "%" PRId64 ".%06" PRId64
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/**
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* QTest Protocol
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*
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* Line based protocol, request/response based. Server can send async messages
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* so clients should always handle many async messages before the response
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* comes in.
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*
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* Valid requests
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*
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* > outb ADDR VALUE
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* < OK
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*
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* > outw ADDR VALUE
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* < OK
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*
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* > outl ADDR VALUE
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* < OK
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*
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* > inb ADDR
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* < OK VALUE
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*
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* > inw ADDR
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* < OK VALUE
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*
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* > inl ADDR
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* < OK VALUE
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*
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* > read ADDR SIZE
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* < OK DATA
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*
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* > write ADDR SIZE DATA
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* < OK
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*
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* Valid async messages:
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*
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* IRQ raise NUM
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* IRQ lower NUM
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*
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* ADDR, SIZE, VALUE are all integers parsed with strtoul() with a base of 0.
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*
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* DATA is an arbitrarily long hex number prefixed with '0x'. If it's smaller
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* than the expected size, the value will be zero filled at the end of the data
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* sequence.
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*
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* NUM is an IRQ number.
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*/
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static int hex2nib(char ch)
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{
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if (ch >= '0' && ch <= '9') {
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return ch - '0';
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} else if (ch >= 'a' && ch <= 'f') {
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return 10 + (ch - 'a');
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} else if (ch >= 'A' && ch <= 'F') {
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return 10 + (ch - 'a');
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} else {
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return -1;
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}
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}
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static void qtest_get_time(struct timeval *tv)
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{
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gettimeofday(tv, NULL);
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tv->tv_sec -= start_time.tv_sec;
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tv->tv_usec -= start_time.tv_usec;
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if (tv->tv_usec < 0) {
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tv->tv_usec += 1000000;
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tv->tv_sec -= 1;
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}
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}
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static void qtest_send_prefix(CharDriverState *chr)
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{
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struct timeval tv;
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if (!qtest_log_fp || !qtest_opened) {
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return;
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}
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qtest_get_time(&tv);
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fprintf(qtest_log_fp, "[S +" FMT_timeval "] ",
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tv.tv_sec, tv.tv_usec);
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}
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static void qtest_send(CharDriverState *chr, const char *fmt, ...)
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{
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va_list ap;
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char buffer[1024];
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size_t len;
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va_start(ap, fmt);
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len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
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va_end(ap);
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qemu_chr_fe_write(chr, (uint8_t *)buffer, len);
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if (qtest_log_fp && qtest_opened) {
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fprintf(qtest_log_fp, "%s", buffer);
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}
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}
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static void qtest_process_command(CharDriverState *chr, gchar **words)
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{
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const gchar *command;
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g_assert(words);
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command = words[0];
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if (qtest_log_fp) {
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struct timeval tv;
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int i;
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qtest_get_time(&tv);
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fprintf(qtest_log_fp, "[R +" FMT_timeval "]",
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tv.tv_sec, tv.tv_usec);
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for (i = 0; words[i]; i++) {
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fprintf(qtest_log_fp, " %s", words[i]);
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}
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fprintf(qtest_log_fp, "\n");
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}
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g_assert(command);
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if (strcmp(words[0], "outb") == 0 ||
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strcmp(words[0], "outw") == 0 ||
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strcmp(words[0], "outl") == 0) {
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uint16_t addr;
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uint32_t value;
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g_assert(words[1] && words[2]);
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addr = strtol(words[1], NULL, 0);
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value = strtol(words[2], NULL, 0);
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if (words[0][3] == 'b') {
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cpu_outb(addr, value);
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} else if (words[0][3] == 'w') {
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cpu_outw(addr, value);
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} else if (words[0][3] == 'l') {
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cpu_outl(addr, value);
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}
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qtest_send_prefix(chr);
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qtest_send(chr, "OK\n");
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} else if (strcmp(words[0], "inb") == 0 ||
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strcmp(words[0], "inw") == 0 ||
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strcmp(words[0], "inl") == 0) {
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uint16_t addr;
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uint32_t value = -1U;
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g_assert(words[1]);
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addr = strtol(words[1], NULL, 0);
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if (words[0][2] == 'b') {
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value = cpu_inb(addr);
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} else if (words[0][2] == 'w') {
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value = cpu_inw(addr);
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} else if (words[0][2] == 'l') {
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value = cpu_inl(addr);
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}
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qtest_send_prefix(chr);
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qtest_send(chr, "OK 0x%04x\n", value);
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} else if (strcmp(words[0], "read") == 0) {
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uint64_t addr, len, i;
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uint8_t *data;
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g_assert(words[1] && words[2]);
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addr = strtoul(words[1], NULL, 0);
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len = strtoul(words[2], NULL, 0);
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data = g_malloc(len);
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cpu_physical_memory_read(addr, data, len);
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qtest_send_prefix(chr);
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qtest_send(chr, "OK 0x");
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for (i = 0; i < len; i++) {
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qtest_send(chr, "%02x", data[i]);
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}
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qtest_send(chr, "\n");
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g_free(data);
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} else if (strcmp(words[0], "write") == 0) {
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uint64_t addr, len, i;
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uint8_t *data;
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size_t data_len;
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g_assert(words[1] && words[2] && words[3]);
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addr = strtoul(words[1], NULL, 0);
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len = strtoul(words[2], NULL, 0);
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data_len = strlen(words[3]);
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if (data_len < 3) {
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qtest_send(chr, "ERR invalid argument size\n");
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return;
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}
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data = g_malloc(len);
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for (i = 0; i < len; i++) {
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if ((i * 2 + 4) <= data_len) {
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data[i] = hex2nib(words[3][i * 2 + 2]) << 4;
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data[i] |= hex2nib(words[3][i * 2 + 3]);
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} else {
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data[i] = 0;
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}
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}
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cpu_physical_memory_write(addr, data, len);
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g_free(data);
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qtest_send_prefix(chr);
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qtest_send(chr, "OK\n");
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} else {
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qtest_send_prefix(chr);
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qtest_send(chr, "FAIL Unknown command `%s'\n", words[0]);
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}
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}
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static void qtest_process_inbuf(CharDriverState *chr, GString *inbuf)
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{
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char *end;
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while ((end = strchr(inbuf->str, '\n')) != NULL) {
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size_t offset;
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GString *cmd;
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gchar **words;
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offset = end - inbuf->str;
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cmd = g_string_new_len(inbuf->str, offset);
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g_string_erase(inbuf, 0, offset + 1);
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words = g_strsplit(cmd->str, " ", 0);
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qtest_process_command(chr, words);
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g_strfreev(words);
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g_string_free(cmd, TRUE);
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}
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}
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static void qtest_read(void *opaque, const uint8_t *buf, int size)
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{
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CharDriverState *chr = opaque;
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g_string_append_len(inbuf, (const gchar *)buf, size);
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qtest_process_inbuf(chr, inbuf);
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}
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static int qtest_can_read(void *opaque)
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{
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return 1024;
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}
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static void qtest_event(void *opaque, int event)
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{
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int i;
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switch (event) {
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case CHR_EVENT_OPENED:
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qemu_system_reset(false);
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for (i = 0; i < ARRAY_SIZE(irq_levels); i++) {
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irq_levels[i] = 0;
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}
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gettimeofday(&start_time, NULL);
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qtest_opened = true;
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if (qtest_log_fp) {
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fprintf(qtest_log_fp, "[I " FMT_timeval "] OPENED\n",
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start_time.tv_sec, start_time.tv_usec);
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}
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break;
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case CHR_EVENT_CLOSED:
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qtest_opened = false;
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if (qtest_log_fp) {
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struct timeval tv;
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qtest_get_time(&tv);
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fprintf(qtest_log_fp, "[I +" FMT_timeval "] CLOSED\n",
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tv.tv_sec, tv.tv_usec);
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}
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break;
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default:
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break;
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}
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}
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static void qtest_set_irq(void *opaque, int irq, int level)
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{
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CharDriverState *chr = qtest_chr;
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bool changed;
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changed = (irq_levels[irq] != level);
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irq_levels[irq] = level;
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if (changed) {
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qtest_send_prefix(chr);
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qtest_send(chr, "IRQ %s %d\n",
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level ? "raise" : "lower", irq);
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}
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}
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int qtest_init(void)
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{
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CharDriverState *chr;
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g_assert(qtest_chrdev != NULL);
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chr = qemu_chr_new("qtest", qtest_chrdev, NULL);
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qemu_chr_add_handlers(chr, qtest_can_read, qtest_read, qtest_event, chr);
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qemu_chr_fe_set_echo(chr, true);
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inbuf = g_string_new("");
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if (qtest_log) {
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if (strcmp(qtest_log, "none") != 0) {
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qtest_log_fp = fopen(qtest_log, "w+");
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}
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} else {
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qtest_log_fp = stderr;
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}
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qtest_chr = chr;
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return 0;
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}
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