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qemu/tests/ipmi-bt-test.c

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/*
* IPMI BT test cases, using the external interface for checking
*
* Copyright (c) 2012 Corey Minyard <cminyard@mvista.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include "libqtest.h"
#include "qemu-common.h"
#define IPMI_IRQ 5
#define IPMI_BT_BASE 0xe4
#define IPMI_BT_CTLREG_CLR_WR_PTR 0
#define IPMI_BT_CTLREG_CLR_RD_PTR 1
#define IPMI_BT_CTLREG_H2B_ATN 2
#define IPMI_BT_CTLREG_B2H_ATN 3
#define IPMI_BT_CTLREG_SMS_ATN 4
#define IPMI_BT_CTLREG_H_BUSY 6
#define IPMI_BT_CTLREG_B_BUSY 7
#define IPMI_BT_CTLREG_GET(b) ((bt_get_ctrlreg() >> (b)) & 1)
#define IPMI_BT_CTLREG_GET_H2B_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_H2B_ATN)
#define IPMI_BT_CTLREG_GET_B2H_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_B2H_ATN)
#define IPMI_BT_CTLREG_GET_SMS_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_SMS_ATN)
#define IPMI_BT_CTLREG_GET_H_BUSY() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_H_BUSY)
#define IPMI_BT_CTLREG_GET_B_BUSY() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_B_BUSY)
#define IPMI_BT_CTLREG_SET(b) bt_write_ctrlreg(1 << (b))
#define IPMI_BT_CTLREG_SET_CLR_WR_PTR() IPMI_BT_CTLREG_SET( \
IPMI_BT_CTLREG_CLR_WR_PTR)
#define IPMI_BT_CTLREG_SET_CLR_RD_PTR() IPMI_BT_CTLREG_SET( \
IPMI_BT_CTLREG_CLR_RD_PTR)
#define IPMI_BT_CTLREG_SET_H2B_ATN() IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_H2B_ATN)
#define IPMI_BT_CTLREG_SET_B2H_ATN() IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_B2H_ATN)
#define IPMI_BT_CTLREG_SET_SMS_ATN() IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_SMS_ATN)
#define IPMI_BT_CTLREG_SET_H_BUSY() IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_H_BUSY)
static int bt_ints_enabled;
static uint8_t bt_get_ctrlreg(void)
{
return inb(IPMI_BT_BASE);
}
static void bt_write_ctrlreg(uint8_t val)
{
outb(IPMI_BT_BASE, val);
}
static uint8_t bt_get_buf(void)
{
return inb(IPMI_BT_BASE + 1);
}
static void bt_write_buf(uint8_t val)
{
outb(IPMI_BT_BASE + 1, val);
}
static uint8_t bt_get_irqreg(void)
{
return inb(IPMI_BT_BASE + 2);
}
static void bt_write_irqreg(uint8_t val)
{
outb(IPMI_BT_BASE + 2, val);
}
static void bt_wait_b_busy(void)
{
unsigned int count = 1000;
while (IPMI_BT_CTLREG_GET_B_BUSY() != 0) {
g_assert(--count != 0);
}
}
static void bt_wait_b2h_atn(void)
{
unsigned int count = 1000;
while (IPMI_BT_CTLREG_GET_B2H_ATN() == 0) {
g_assert(--count != 0);
}
}
static int emu_lfd;
static int emu_fd;
static in_port_t emu_port;
static uint8_t inbuf[100];
static unsigned int inbuf_len;
static unsigned int inbuf_pos;
static int last_was_aa;
static void read_emu_data(void)
{
fd_set readfds;
int rv;
struct timeval tv;
FD_ZERO(&readfds);
FD_SET(emu_fd, &readfds);
tv.tv_sec = 10;
tv.tv_usec = 0;
rv = select(emu_fd + 1, &readfds, NULL, NULL, &tv);
if (rv == -1) {
perror("select");
}
g_assert(rv == 1);
rv = read(emu_fd, inbuf, sizeof(inbuf));
if (rv == -1) {
perror("read");
}
g_assert(rv > 0);
inbuf_len = rv;
inbuf_pos = 0;
}
static void write_emu_msg(uint8_t *msg, unsigned int len)
{
int rv;
#ifdef DEBUG_TEST
{
unsigned int i;
printf("sending:");
for (i = 0; i < len; i++) {
printf(" %2.2x", msg[i]);
}
printf("\n");
}
#endif
rv = write(emu_fd, msg, len);
g_assert(rv == len);
}
static void get_emu_msg(uint8_t *msg, unsigned int *len)
{
unsigned int outpos = 0;
for (;;) {
while (inbuf_pos < inbuf_len) {
uint8_t ch = inbuf[inbuf_pos++];
g_assert(outpos < *len);
if (last_was_aa) {
assert(ch & 0x10);
msg[outpos++] = ch & ~0x10;
last_was_aa = 0;
} else if (ch == 0xaa) {
last_was_aa = 1;
} else {
msg[outpos++] = ch;
if ((ch == 0xa0) || (ch == 0xa1)) {
/* Message complete */
*len = outpos;
goto done;
}
}
}
read_emu_data();
}
done:
#ifdef DEBUG_TEST
{
unsigned int i;
printf("Msg:");
for (i = 0; i < outpos; i++) {
printf(" %2.2x", msg[i]);
}
printf("\n");
}
#endif
return;
}
static uint8_t
ipmb_checksum(const unsigned char *data, int size, unsigned char start)
{
unsigned char csum = start;
for (; size > 0; size--, data++) {
csum += *data;
}
return csum;
}
static uint8_t get_dev_id_cmd[] = { 0x18, 0x01 };
static uint8_t get_dev_id_rsp[] = { 0x1c, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00,
0x02, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 };
static uint8_t set_bmc_globals_cmd[] = { 0x18, 0x2e, 0x0f };
static uint8_t set_bmc_globals_rsp[] = { 0x1c, 0x2e, 0x00 };
static uint8_t enable_irq_cmd[] = { 0x05, 0xa1 };
static void emu_msg_handler(void)
{
uint8_t msg[100];
unsigned int msg_len = sizeof(msg);
get_emu_msg(msg, &msg_len);
g_assert(msg_len >= 5);
g_assert(msg[msg_len - 1] == 0xa0);
msg_len--;
g_assert(ipmb_checksum(msg, msg_len, 0) == 0);
msg_len--;
if ((msg[1] == get_dev_id_cmd[0]) && (msg[2] == get_dev_id_cmd[1])) {
memcpy(msg + 1, get_dev_id_rsp, sizeof(get_dev_id_rsp));
msg_len = sizeof(get_dev_id_rsp) + 1;
msg[msg_len] = -ipmb_checksum(msg, msg_len, 0);
msg_len++;
msg[msg_len++] = 0xa0;
write_emu_msg(msg, msg_len);
} else if ((msg[1] == set_bmc_globals_cmd[0]) &&
(msg[2] == set_bmc_globals_cmd[1])) {
memcpy(msg + 1, set_bmc_globals_rsp, sizeof(set_bmc_globals_rsp));
msg_len = sizeof(set_bmc_globals_rsp) + 1;
msg[msg_len] = -ipmb_checksum(msg, msg_len, 0);
msg_len++;
msg[msg_len++] = 0xa0;
write_emu_msg(msg, msg_len);
write_emu_msg(enable_irq_cmd, sizeof(enable_irq_cmd));
} else {
g_assert(0);
}
}
static void bt_cmd(uint8_t *cmd, unsigned int cmd_len,
uint8_t *rsp, unsigned int *rsp_len)
{
unsigned int i, len, j = 0;
uint8_t seq = 5;
/* Should be idle */
g_assert(bt_get_ctrlreg() == 0);
bt_wait_b_busy();
IPMI_BT_CTLREG_SET_CLR_WR_PTR();
bt_write_buf(cmd_len + 1);
bt_write_buf(cmd[0]);
bt_write_buf(seq);
for (i = 1; i < cmd_len; i++) {
bt_write_buf(cmd[i]);
}
IPMI_BT_CTLREG_SET_H2B_ATN();
emu_msg_handler(); /* We should get a message on the socket here. */
bt_wait_b2h_atn();
if (bt_ints_enabled) {
g_assert((bt_get_irqreg() & 0x02) == 0x02);
g_assert(get_irq(IPMI_IRQ));
bt_write_irqreg(0x03);
} else {
g_assert(!get_irq(IPMI_IRQ));
}
IPMI_BT_CTLREG_SET_H_BUSY();
IPMI_BT_CTLREG_SET_B2H_ATN();
IPMI_BT_CTLREG_SET_CLR_RD_PTR();
len = bt_get_buf();
g_assert(len >= 4);
rsp[0] = bt_get_buf();
assert(bt_get_buf() == seq);
len--;
for (j = 1; j < len; j++) {
rsp[j] = bt_get_buf();
}
IPMI_BT_CTLREG_SET_H_BUSY();
*rsp_len = j;
}
/*
* We should get a connect request and a short message with capabilities.
*/
static void test_connect(void)
{
fd_set readfds;
int rv;
int val;
struct timeval tv;
uint8_t msg[100];
unsigned int msglen;
static uint8_t exp1[] = { 0xff, 0x01, 0xa1 }; /* A protocol version */
static uint8_t exp2[] = { 0x08, 0x3f, 0xa1 }; /* A capabilities cmd */
FD_ZERO(&readfds);
FD_SET(emu_lfd, &readfds);
tv.tv_sec = 10;
tv.tv_usec = 0;
rv = select(emu_lfd + 1, &readfds, NULL, NULL, &tv);
g_assert(rv == 1);
emu_fd = accept(emu_lfd, NULL, 0);
if (emu_fd < 0) {
perror("accept");
}
g_assert(emu_fd >= 0);
val = 1;
rv = setsockopt(emu_fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
g_assert(rv != -1);
/* Report our version */
write_emu_msg(exp1, sizeof(exp1));
/* Validate that we get the info we expect. */
msglen = sizeof(msg);
get_emu_msg(msg, &msglen);
g_assert(msglen == sizeof(exp1));
g_assert(memcmp(msg, exp1, msglen) == 0);
msglen = sizeof(msg);
get_emu_msg(msg, &msglen);
g_assert(msglen == sizeof(exp2));
g_assert(memcmp(msg, exp2, msglen) == 0);
}
/*
* Send a get_device_id to do a basic test.
*/
static void test_bt_base(void)
{
uint8_t rsp[20];
unsigned int rsplen = sizeof(rsp);
bt_cmd(get_dev_id_cmd, sizeof(get_dev_id_cmd), rsp, &rsplen);
g_assert(rsplen == sizeof(get_dev_id_rsp));
g_assert(memcmp(get_dev_id_rsp, rsp, rsplen) == 0);
}
/*
* Enable IRQs for the interface.
*/
static void test_enable_irq(void)
{
uint8_t rsp[20];
unsigned int rsplen = sizeof(rsp);
bt_cmd(set_bmc_globals_cmd, sizeof(set_bmc_globals_cmd), rsp, &rsplen);
g_assert(rsplen == sizeof(set_bmc_globals_rsp));
g_assert(memcmp(set_bmc_globals_rsp, rsp, rsplen) == 0);
bt_write_irqreg(0x01);
bt_ints_enabled = 1;
}
/*
* Create a local TCP socket with any port, then save off the port we got.
*/
static void open_socket(void)
{
struct sockaddr_in myaddr;
socklen_t addrlen;
myaddr.sin_family = AF_INET;
myaddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
myaddr.sin_port = 0;
emu_lfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (emu_lfd == -1) {
perror("socket");
exit(1);
}
if (bind(emu_lfd, (struct sockaddr *) &myaddr, sizeof(myaddr)) == -1) {
perror("bind");
exit(1);
}
addrlen = sizeof(myaddr);
if (getsockname(emu_lfd, (struct sockaddr *) &myaddr , &addrlen) == -1) {
perror("getsockname");
exit(1);
}
emu_port = ntohs(myaddr.sin_port);
assert(listen(emu_lfd, 1) != -1);
}
int main(int argc, char **argv)
{
int ret;
open_socket();
/* Run the tests */
g_test_init(&argc, &argv, NULL);
global_qtest = qtest_initf(
" -chardev socket,id=ipmi0,host=localhost,port=%d,reconnect=10"
" -device ipmi-bmc-extern,chardev=ipmi0,id=bmc0"
" -device isa-ipmi-bt,bmc=bmc0", emu_port);
qtest_irq_intercept_in(global_qtest, "ioapic");
qtest_add_func("/ipmi/extern/connect", test_connect);
qtest_add_func("/ipmi/extern/bt_base", test_bt_base);
qtest_add_func("/ipmi/extern/bt_enable_irq", test_enable_irq);
qtest_add_func("/ipmi/extern/bt_base_irq", test_bt_base);
ret = g_test_run();
qtest_quit(global_qtest);
return ret;
}
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