summaryrefslogtreecommitdiffstats
path: root/Documentation/mic/mpssd/mpssd.c
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/mic/mpssd/mpssd.c')
-rw-r--r--Documentation/mic/mpssd/mpssd.c362
1 files changed, 230 insertions, 132 deletions
diff --git a/Documentation/mic/mpssd/mpssd.c b/Documentation/mic/mpssd/mpssd.c
index 3c5c379..aaeafa1 100644
--- a/Documentation/mic/mpssd/mpssd.c
+++ b/Documentation/mic/mpssd/mpssd.c
@@ -43,7 +43,7 @@
#include <linux/mic_common.h>
#include <tools/endian.h>
-static void init_mic(struct mic_info *mic);
+static void *init_mic(void *arg);
static FILE *logfp;
static struct mic_info mic_list;
@@ -116,19 +116,18 @@ static struct {
.num = htole16(MIC_VRING_ENTRIES),
},
#if GSO_ENABLED
- .host_features = htole32(
+ .host_features = htole32(
1 << VIRTIO_NET_F_CSUM |
1 << VIRTIO_NET_F_GSO |
1 << VIRTIO_NET_F_GUEST_TSO4 |
1 << VIRTIO_NET_F_GUEST_TSO6 |
- 1 << VIRTIO_NET_F_GUEST_ECN |
- 1 << VIRTIO_NET_F_GUEST_UFO),
+ 1 << VIRTIO_NET_F_GUEST_ECN),
#else
.host_features = 0,
#endif
};
-static const char *mic_config_dir = "/etc/sysconfig/mic";
+static const char *mic_config_dir = "/etc/mpss";
static const char *virtblk_backend = "VIRTBLK_BACKEND";
static struct {
struct mic_device_desc dd;
@@ -192,7 +191,7 @@ tap_configure(struct mic_info *mic, char *dev)
return ret;
}
- snprintf(ipaddr, IFNAMSIZ, "172.31.%d.254/24", mic->id);
+ snprintf(ipaddr, IFNAMSIZ, "172.31.%d.254/24", mic->id + 1);
pid = fork();
if (pid == 0) {
@@ -255,8 +254,7 @@ static int tun_alloc(struct mic_info *mic, char *dev)
return err;
}
#if GSO_ENABLED
- offload = TUN_F_CSUM | TUN_F_TSO4 | TUN_F_TSO6 |
- TUN_F_TSO_ECN | TUN_F_UFO;
+ offload = TUN_F_CSUM | TUN_F_TSO4 | TUN_F_TSO6 | TUN_F_TSO_ECN;
err = ioctl(fd, TUNSETOFFLOAD, offload);
if (err < 0) {
@@ -332,7 +330,6 @@ static struct mic_device_desc *get_device_desc(struct mic_info *mic, int type)
return d;
}
mpsslog("%s %s %d not found\n", mic->name, __func__, type);
- assert(0);
return NULL;
}
@@ -415,6 +412,13 @@ mic_virtio_copy(struct mic_info *mic, int fd,
return ret;
}
+static inline unsigned _vring_size(unsigned int num, unsigned long align)
+{
+ return ((sizeof(struct vring_desc) * num + sizeof(__u16) * (3 + num)
+ + align - 1) & ~(align - 1))
+ + sizeof(__u16) * 3 + sizeof(struct vring_used_elem) * num;
+}
+
/*
* This initialization routine requires at least one
* vring i.e. vr0. vr1 is optional.
@@ -426,8 +430,9 @@ init_vr(struct mic_info *mic, int fd, int type,
int vr_size;
char *va;
- vr_size = PAGE_ALIGN(vring_size(MIC_VRING_ENTRIES,
- MIC_VIRTIO_RING_ALIGN) + sizeof(struct _mic_vring_info));
+ vr_size = PAGE_ALIGN(_vring_size(MIC_VRING_ENTRIES,
+ MIC_VIRTIO_RING_ALIGN) +
+ sizeof(struct _mic_vring_info));
va = mmap(NULL, MIC_DEVICE_PAGE_END + vr_size * num_vq,
PROT_READ, MAP_SHARED, fd, 0);
if (MAP_FAILED == va) {
@@ -439,25 +444,25 @@ init_vr(struct mic_info *mic, int fd, int type,
set_dp(mic, type, va);
vr0->va = (struct mic_vring *)&va[MIC_DEVICE_PAGE_END];
vr0->info = vr0->va +
- vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN);
+ _vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN);
vring_init(&vr0->vr,
MIC_VRING_ENTRIES, vr0->va, MIC_VIRTIO_RING_ALIGN);
mpsslog("%s %s vr0 %p vr0->info %p vr_size 0x%x vring 0x%x ",
__func__, mic->name, vr0->va, vr0->info, vr_size,
- vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN));
+ _vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN));
mpsslog("magic 0x%x expected 0x%x\n",
le32toh(vr0->info->magic), MIC_MAGIC + type);
assert(le32toh(vr0->info->magic) == MIC_MAGIC + type);
if (vr1) {
vr1->va = (struct mic_vring *)
&va[MIC_DEVICE_PAGE_END + vr_size];
- vr1->info = vr1->va + vring_size(MIC_VRING_ENTRIES,
+ vr1->info = vr1->va + _vring_size(MIC_VRING_ENTRIES,
MIC_VIRTIO_RING_ALIGN);
vring_init(&vr1->vr,
MIC_VRING_ENTRIES, vr1->va, MIC_VIRTIO_RING_ALIGN);
mpsslog("%s %s vr1 %p vr1->info %p vr_size 0x%x vring 0x%x ",
__func__, mic->name, vr1->va, vr1->info, vr_size,
- vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN));
+ _vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN));
mpsslog("magic 0x%x expected 0x%x\n",
le32toh(vr1->info->magic), MIC_MAGIC + type + 1);
assert(le32toh(vr1->info->magic) == MIC_MAGIC + type + 1);
@@ -466,16 +471,21 @@ done:
return va;
}
-static void
+static int
wait_for_card_driver(struct mic_info *mic, int fd, int type)
{
struct pollfd pollfd;
int err;
struct mic_device_desc *desc = get_device_desc(mic, type);
+ __u8 prev_status;
+ if (!desc)
+ return -ENODEV;
+ prev_status = desc->status;
pollfd.fd = fd;
mpsslog("%s %s Waiting .... desc-> type %d status 0x%x\n",
mic->name, __func__, type, desc->status);
+
while (1) {
pollfd.events = POLLIN;
pollfd.revents = 0;
@@ -487,8 +497,13 @@ wait_for_card_driver(struct mic_info *mic, int fd, int type)
}
if (pollfd.revents) {
- mpsslog("%s %s Waiting... desc-> type %d status 0x%x\n",
- mic->name, __func__, type, desc->status);
+ if (desc->status != prev_status) {
+ mpsslog("%s %s Waiting... desc-> type %d "
+ "status 0x%x\n",
+ mic->name, __func__, type,
+ desc->status);
+ prev_status = desc->status;
+ }
if (desc->status & VIRTIO_CONFIG_S_DRIVER_OK) {
mpsslog("%s %s poll.revents %d\n",
mic->name, __func__, pollfd.revents);
@@ -499,6 +514,7 @@ wait_for_card_driver(struct mic_info *mic, int fd, int type)
}
}
}
+ return 0;
}
/* Spin till we have some descriptors */
@@ -575,9 +591,16 @@ virtio_net(void *arg)
__func__, strerror(errno));
continue;
}
- if (!(desc->status & VIRTIO_CONFIG_S_DRIVER_OK))
- wait_for_card_driver(mic, mic->mic_net.virtio_net_fd,
- VIRTIO_ID_NET);
+ if (!(desc->status & VIRTIO_CONFIG_S_DRIVER_OK)) {
+ err = wait_for_card_driver(mic,
+ mic->mic_net.virtio_net_fd,
+ VIRTIO_ID_NET);
+ if (err) {
+ mpsslog("%s %s %d Exiting...\n",
+ mic->name, __func__, __LINE__);
+ break;
+ }
+ }
/*
* Check if there is data to be read from TUN and write to
* virtio net fd if there is.
@@ -786,10 +809,16 @@ virtio_console(void *arg)
strerror(errno));
continue;
}
- if (!(desc->status & VIRTIO_CONFIG_S_DRIVER_OK))
- wait_for_card_driver(mic,
- mic->mic_console.virtio_console_fd,
- VIRTIO_ID_CONSOLE);
+ if (!(desc->status & VIRTIO_CONFIG_S_DRIVER_OK)) {
+ err = wait_for_card_driver(mic,
+ mic->mic_console.virtio_console_fd,
+ VIRTIO_ID_CONSOLE);
+ if (err) {
+ mpsslog("%s %s %d Exiting...\n",
+ mic->name, __func__, __LINE__);
+ break;
+ }
+ }
if (console_poll[MONITOR_FD].revents & POLLIN) {
copy.iov = iov0;
@@ -1048,8 +1077,9 @@ stop_virtblk(struct mic_info *mic)
{
int vr_size, ret;
- vr_size = PAGE_ALIGN(vring_size(MIC_VRING_ENTRIES,
- MIC_VIRTIO_RING_ALIGN) + sizeof(struct _mic_vring_info));
+ vr_size = PAGE_ALIGN(_vring_size(MIC_VRING_ENTRIES,
+ MIC_VIRTIO_RING_ALIGN) +
+ sizeof(struct _mic_vring_info));
ret = munmap(mic->mic_virtblk.block_dp,
MIC_DEVICE_PAGE_END + vr_size * virtblk_dev_page.dd.num_vq);
if (ret < 0)
@@ -1131,6 +1161,10 @@ write_status(int fd, __u8 *status)
return ioctl(fd, MIC_VIRTIO_COPY_DESC, &copy);
}
+#ifndef VIRTIO_BLK_T_GET_ID
+#define VIRTIO_BLK_T_GET_ID 8
+#endif
+
static void *
virtio_block(void *arg)
{
@@ -1297,12 +1331,7 @@ reset(struct mic_info *mic)
mpsslog("%s: %s %d state %s\n",
mic->name, __func__, __LINE__, state);
- /*
- * If the shutdown was initiated by OSPM, the state stays
- * in "suspended" which is also a valid condition for reset.
- */
- if ((!strcmp(state, "offline")) ||
- (!strcmp(state, "suspended"))) {
+ if (!strcmp(state, "ready")) {
free(state);
break;
}
@@ -1331,34 +1360,50 @@ get_mic_shutdown_status(struct mic_info *mic, char *shutdown_status)
assert(0);
};
-static int get_mic_state(struct mic_info *mic, char *state)
+static int get_mic_state(struct mic_info *mic)
{
- if (!strcmp(state, "offline"))
- return MIC_OFFLINE;
- if (!strcmp(state, "online"))
- return MIC_ONLINE;
- if (!strcmp(state, "shutting_down"))
- return MIC_SHUTTING_DOWN;
- if (!strcmp(state, "reset_failed"))
- return MIC_RESET_FAILED;
- if (!strcmp(state, "suspending"))
- return MIC_SUSPENDING;
- if (!strcmp(state, "suspended"))
- return MIC_SUSPENDED;
- mpsslog("%s: BUG invalid state %s\n", mic->name, state);
- /* Invalid state */
- assert(0);
+ char *state = NULL;
+ enum mic_states mic_state;
+
+ while (!state) {
+ state = readsysfs(mic->name, "state");
+ sleep(1);
+ }
+ mpsslog("%s: %s %d state %s\n",
+ mic->name, __func__, __LINE__, state);
+
+ if (!strcmp(state, "ready")) {
+ mic_state = MIC_READY;
+ } else if (!strcmp(state, "booting")) {
+ mic_state = MIC_BOOTING;
+ } else if (!strcmp(state, "online")) {
+ mic_state = MIC_ONLINE;
+ } else if (!strcmp(state, "shutting_down")) {
+ mic_state = MIC_SHUTTING_DOWN;
+ } else if (!strcmp(state, "reset_failed")) {
+ mic_state = MIC_RESET_FAILED;
+ } else if (!strcmp(state, "resetting")) {
+ mic_state = MIC_RESETTING;
+ } else {
+ mpsslog("%s: BUG invalid state %s\n", mic->name, state);
+ assert(0);
+ }
+
+ free(state);
+ return mic_state;
};
static void mic_handle_shutdown(struct mic_info *mic)
{
#define SHUTDOWN_TIMEOUT 60
- int i = SHUTDOWN_TIMEOUT, ret, stat = 0;
+ int i = SHUTDOWN_TIMEOUT;
char *shutdown_status;
while (i) {
shutdown_status = readsysfs(mic->name, "shutdown_status");
- if (!shutdown_status)
+ if (!shutdown_status) {
+ sleep(1);
continue;
+ }
mpsslog("%s: %s %d shutdown_status %s\n",
mic->name, __func__, __LINE__, shutdown_status);
switch (get_mic_shutdown_status(mic, shutdown_status)) {
@@ -1377,94 +1422,110 @@ static void mic_handle_shutdown(struct mic_info *mic)
i--;
}
reset:
- ret = kill(mic->pid, SIGTERM);
- mpsslog("%s: %s %d kill pid %d ret %d\n",
- mic->name, __func__, __LINE__,
- mic->pid, ret);
- if (!ret) {
- ret = waitpid(mic->pid, &stat,
- WIFSIGNALED(stat));
- mpsslog("%s: %s %d waitpid ret %d pid %d\n",
- mic->name, __func__, __LINE__,
- ret, mic->pid);
- }
- if (ret == mic->pid)
- reset(mic);
+ if (!i)
+ mpsslog("%s: %s %d timing out waiting for shutdown_status %s\n",
+ mic->name, __func__, __LINE__, shutdown_status);
+ reset(mic);
}
-static void *
-mic_config(void *arg)
+static int open_state_fd(struct mic_info *mic)
{
- struct mic_info *mic = (struct mic_info *)arg;
- char *state = NULL;
char pathname[PATH_MAX];
- int fd, ret;
- struct pollfd ufds[1];
- char value[4096];
+ int fd;
snprintf(pathname, PATH_MAX - 1, "%s/%s/%s",
MICSYSFSDIR, mic->name, "state");
fd = open(pathname, O_RDONLY);
- if (fd < 0) {
+ if (fd < 0)
mpsslog("%s: opening file %s failed %s\n",
mic->name, pathname, strerror(errno));
- goto error;
+ return fd;
+}
+
+static int block_till_state_change(int fd, struct mic_info *mic)
+{
+ struct pollfd ufds[1];
+ char value[PAGE_SIZE];
+ int ret;
+
+ ufds[0].fd = fd;
+ ufds[0].events = POLLERR | POLLPRI;
+ ret = poll(ufds, 1, -1);
+ if (ret < 0) {
+ mpsslog("%s: %s %d poll failed %s\n",
+ mic->name, __func__, __LINE__, strerror(errno));
+ return ret;
+ }
+
+ ret = lseek(fd, 0, SEEK_SET);
+ if (ret < 0) {
+ mpsslog("%s: %s %d Failed to seek to 0: %s\n",
+ mic->name, __func__, __LINE__, strerror(errno));
+ return ret;
+ }
+
+ ret = read(fd, value, sizeof(value));
+ if (ret < 0) {
+ mpsslog("%s: %s %d Failed to read sysfs entry: %s\n",
+ mic->name, __func__, __LINE__, strerror(errno));
+ return ret;
+ }
+
+ return 0;
+}
+
+static void *
+mic_config(void *arg)
+{
+ struct mic_info *mic = (struct mic_info *)arg;
+ int fd, ret, stat = 0;
+
+ fd = open_state_fd(mic);
+ if (fd < 0) {
+ mpsslog("%s: %s %d open state fd failed %s\n",
+ mic->name, __func__, __LINE__, strerror(errno));
+ goto exit;
}
do {
- ret = lseek(fd, 0, SEEK_SET);
+ ret = block_till_state_change(fd, mic);
if (ret < 0) {
- mpsslog("%s: Failed to seek to file start '%s': %s\n",
- mic->name, pathname, strerror(errno));
- goto close_error1;
+ mpsslog("%s: %s %d block_till_state_change error %s\n",
+ mic->name, __func__, __LINE__, strerror(errno));
+ goto close_exit;
}
- ret = read(fd, value, sizeof(value));
- if (ret < 0) {
- mpsslog("%s: Failed to read sysfs entry '%s': %s\n",
- mic->name, pathname, strerror(errno));
- goto close_error1;
- }
-retry:
- state = readsysfs(mic->name, "state");
- if (!state)
- goto retry;
- mpsslog("%s: %s %d state %s\n",
- mic->name, __func__, __LINE__, state);
- switch (get_mic_state(mic, state)) {
+
+ switch (get_mic_state(mic)) {
case MIC_SHUTTING_DOWN:
mic_handle_shutdown(mic);
- goto close_error;
- case MIC_SUSPENDING:
- mic->boot_on_resume = 1;
- setsysfs(mic->name, "state", "suspend");
- mic_handle_shutdown(mic);
- goto close_error;
- case MIC_OFFLINE:
+ break;
+ case MIC_READY:
+ case MIC_RESET_FAILED:
+ ret = kill(mic->pid, SIGTERM);
+ mpsslog("%s: %s %d kill pid %d ret %d\n",
+ mic->name, __func__, __LINE__,
+ mic->pid, ret);
+ if (!ret) {
+ ret = waitpid(mic->pid, &stat,
+ WIFSIGNALED(stat));
+ mpsslog("%s: %s %d waitpid ret %d pid %d\n",
+ mic->name, __func__, __LINE__,
+ ret, mic->pid);
+ }
if (mic->boot_on_resume) {
setsysfs(mic->name, "state", "boot");
mic->boot_on_resume = 0;
}
- break;
+ goto close_exit;
default:
break;
}
- free(state);
-
- ufds[0].fd = fd;
- ufds[0].events = POLLERR | POLLPRI;
- ret = poll(ufds, 1, -1);
- if (ret < 0) {
- mpsslog("%s: poll failed %s\n",
- mic->name, strerror(errno));
- goto close_error1;
- }
} while (1);
-close_error:
- free(state);
-close_error1:
+
+close_exit:
close(fd);
-error:
+exit:
init_mic(mic);
pthread_exit(NULL);
}
@@ -1477,15 +1538,15 @@ set_cmdline(struct mic_info *mic)
len = snprintf(buffer, PATH_MAX,
"clocksource=tsc highres=off nohz=off ");
- len += snprintf(buffer + len, PATH_MAX - len,
+ len += snprintf(buffer + len, PATH_MAX,
"cpufreq_on;corec6_off;pc3_off;pc6_off ");
- len += snprintf(buffer + len, PATH_MAX - len,
+ len += snprintf(buffer + len, PATH_MAX,
"ifcfg=static;address,172.31.%d.1;netmask,255.255.255.0",
- mic->id);
+ mic->id + 1);
setsysfs(mic->name, "cmdline", buffer);
mpsslog("%s: Command line: \"%s\"\n", mic->name, buffer);
- snprintf(buffer, PATH_MAX, "172.31.%d.1", mic->id);
+ snprintf(buffer, PATH_MAX, "172.31.%d.1", mic->id + 1);
mpsslog("%s: IPADDR: \"%s\"\n", mic->name, buffer);
}
@@ -1541,8 +1602,6 @@ set_log_buf_info(struct mic_info *mic)
close(fd);
}
-static void init_mic(struct mic_info *mic);
-
static void
change_virtblk_backend(int x, siginfo_t *siginfo, void *p)
{
@@ -1553,8 +1612,16 @@ change_virtblk_backend(int x, siginfo_t *siginfo, void *p)
}
static void
-init_mic(struct mic_info *mic)
+set_mic_boot_params(struct mic_info *mic)
+{
+ set_log_buf_info(mic);
+ set_cmdline(mic);
+}
+
+static void *
+init_mic(void *arg)
{
+ struct mic_info *mic = (struct mic_info *)arg;
struct sigaction ignore = {
.sa_flags = 0,
.sa_handler = SIG_IGN
@@ -1564,7 +1631,7 @@ init_mic(struct mic_info *mic)
.sa_sigaction = change_virtblk_backend,
};
char buffer[PATH_MAX];
- int err;
+ int err, fd;
/*
* Currently, one virtio block device is supported for each MIC card
@@ -1577,12 +1644,38 @@ init_mic(struct mic_info *mic)
* the MIC daemon.
*/
sigaction(SIGUSR1, &ignore, NULL);
+retry:
+ fd = open_state_fd(mic);
+ if (fd < 0) {
+ mpsslog("%s: %s %d open state fd failed %s\n",
+ mic->name, __func__, __LINE__, strerror(errno));
+ sleep(2);
+ goto retry;
+ }
+
+ if (mic->restart) {
+ snprintf(buffer, PATH_MAX, "boot");
+ setsysfs(mic->name, "state", buffer);
+ mpsslog("%s restarting mic %d\n",
+ mic->name, mic->restart);
+ mic->restart = 0;
+ }
+
+ while (1) {
+ while (block_till_state_change(fd, mic)) {
+ mpsslog("%s: %s %d block_till_state_change error %s\n",
+ mic->name, __func__, __LINE__, strerror(errno));
+ sleep(2);
+ continue;
+ }
+
+ if (get_mic_state(mic) == MIC_BOOTING)
+ break;
+ }
mic->pid = fork();
switch (mic->pid) {
case 0:
- set_log_buf_info(mic);
- set_cmdline(mic);
add_virtio_device(mic, &virtcons_dev_page.dd);
add_virtio_device(mic, &virtnet_dev_page.dd);
err = pthread_create(&mic->mic_console.console_thread, NULL,
@@ -1612,24 +1705,29 @@ init_mic(struct mic_info *mic)
mic->name, mic->id, errno);
break;
default:
- if (mic->restart) {
- snprintf(buffer, PATH_MAX, "boot");
- setsysfs(mic->name, "state", buffer);
- mpsslog("%s restarting mic %d\n",
- mic->name, mic->restart);
- mic->restart = 0;
- }
- pthread_create(&mic->config_thread, NULL, mic_config, mic);
+ err = pthread_create(&mic->config_thread, NULL,
+ mic_config, mic);
+ if (err)
+ mpsslog("%s mic_config pthread_create failed %s\n",
+ mic->name, strerror(err));
}
+
+ return NULL;
}
static void
start_daemon(void)
{
struct mic_info *mic;
+ int err;
- for (mic = mic_list.next; mic != NULL; mic = mic->next)
- init_mic(mic);
+ for (mic = mic_list.next; mic; mic = mic->next) {
+ set_mic_boot_params(mic);
+ err = pthread_create(&mic->init_thread, NULL, init_mic, mic);
+ if (err)
+ mpsslog("%s init_mic pthread_create failed %s\n",
+ mic->name, strerror(err));
+ }
while (1)
sleep(60);
OpenPOWER on IntegriCloud