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Diffstat (limited to 'arch/sparc64/kernel/ds.c')
-rw-r--r--arch/sparc64/kernel/ds.c251
1 files changed, 157 insertions, 94 deletions
diff --git a/arch/sparc64/kernel/ds.c b/arch/sparc64/kernel/ds.c
index 1a2062e..8c5692e 100644
--- a/arch/sparc64/kernel/ds.c
+++ b/arch/sparc64/kernel/ds.c
@@ -124,10 +124,11 @@ struct ds_data_nack {
__u64 result;
};
+struct ds_info;
struct ds_cap_state {
__u64 handle;
- void (*data)(struct ldc_channel *lp,
+ void (*data)(struct ds_info *dp,
struct ds_cap_state *cp,
void *buf, int len);
@@ -139,27 +140,27 @@ struct ds_cap_state {
#define CAP_STATE_REGISTERED 0x02
};
-static void md_update_data(struct ldc_channel *lp, struct ds_cap_state *cp,
+static void md_update_data(struct ds_info *dp, struct ds_cap_state *cp,
void *buf, int len);
-static void domain_shutdown_data(struct ldc_channel *lp,
+static void domain_shutdown_data(struct ds_info *dp,
struct ds_cap_state *cp,
void *buf, int len);
-static void domain_panic_data(struct ldc_channel *lp,
+static void domain_panic_data(struct ds_info *dp,
struct ds_cap_state *cp,
void *buf, int len);
#ifdef CONFIG_HOTPLUG_CPU
-static void dr_cpu_data(struct ldc_channel *lp,
+static void dr_cpu_data(struct ds_info *dp,
struct ds_cap_state *cp,
void *buf, int len);
#endif
-static void ds_pri_data(struct ldc_channel *lp,
+static void ds_pri_data(struct ds_info *dp,
struct ds_cap_state *cp,
void *buf, int len);
-static void ds_var_data(struct ldc_channel *lp,
+static void ds_var_data(struct ds_info *dp,
struct ds_cap_state *cp,
void *buf, int len);
-struct ds_cap_state ds_states[] = {
+struct ds_cap_state ds_states_template[] = {
{
.service_id = "md-update",
.data = md_update_data,
@@ -200,30 +201,38 @@ struct ds_info {
#define DS_HS_START 0x01
#define DS_HS_DONE 0x02
+ u64 id;
+
void *rcv_buf;
int rcv_buf_len;
+
+ struct ds_cap_state *ds_states;
+ int num_ds_states;
+
+ struct ds_info *next;
};
-static struct ds_info *ds_info;
+static struct ds_info *ds_info_list;
-static struct ds_cap_state *find_cap(u64 handle)
+static struct ds_cap_state *find_cap(struct ds_info *dp, u64 handle)
{
unsigned int index = handle >> 32;
- if (index >= ARRAY_SIZE(ds_states))
+ if (index >= dp->num_ds_states)
return NULL;
- return &ds_states[index];
+ return &dp->ds_states[index];
}
-static struct ds_cap_state *find_cap_by_string(const char *name)
+static struct ds_cap_state *find_cap_by_string(struct ds_info *dp,
+ const char *name)
{
int i;
- for (i = 0; i < ARRAY_SIZE(ds_states); i++) {
- if (strcmp(ds_states[i].service_id, name))
+ for (i = 0; i < dp->num_ds_states; i++) {
+ if (strcmp(dp->ds_states[i].service_id, name))
continue;
- return &ds_states[i];
+ return &dp->ds_states[i];
}
return NULL;
}
@@ -264,10 +273,11 @@ struct ds_md_update_res {
__u32 result;
};
-static void md_update_data(struct ldc_channel *lp,
- struct ds_cap_state *dp,
+static void md_update_data(struct ds_info *dp,
+ struct ds_cap_state *cp,
void *buf, int len)
{
+ struct ldc_channel *lp = dp->lp;
struct ds_data *dpkt = buf;
struct ds_md_update_req *rp;
struct {
@@ -277,14 +287,14 @@ static void md_update_data(struct ldc_channel *lp,
rp = (struct ds_md_update_req *) (dpkt + 1);
- printk(KERN_INFO PFX "Machine description update.\n");
+ printk(KERN_INFO "ds-%lu: Machine description update.\n", dp->id);
mdesc_update();
memset(&pkt, 0, sizeof(pkt));
pkt.data.tag.type = DS_DATA;
pkt.data.tag.len = sizeof(pkt) - sizeof(struct ds_msg_tag);
- pkt.data.handle = dp->handle;
+ pkt.data.handle = cp->handle;
pkt.res.req_num = rp->req_num;
pkt.res.result = DS_OK;
@@ -302,10 +312,11 @@ struct ds_shutdown_res {
char reason[1];
};
-static void domain_shutdown_data(struct ldc_channel *lp,
- struct ds_cap_state *dp,
+static void domain_shutdown_data(struct ds_info *dp,
+ struct ds_cap_state *cp,
void *buf, int len)
{
+ struct ldc_channel *lp = dp->lp;
struct ds_data *dpkt = buf;
struct ds_shutdown_req *rp;
struct {
@@ -315,13 +326,13 @@ static void domain_shutdown_data(struct ldc_channel *lp,
rp = (struct ds_shutdown_req *) (dpkt + 1);
- printk(KERN_ALERT PFX "Shutdown request from "
- "LDOM manager received.\n");
+ printk(KERN_ALERT "ds-%lu: Shutdown request from "
+ "LDOM manager received.\n", dp->id);
memset(&pkt, 0, sizeof(pkt));
pkt.data.tag.type = DS_DATA;
pkt.data.tag.len = sizeof(pkt) - sizeof(struct ds_msg_tag);
- pkt.data.handle = dp->handle;
+ pkt.data.handle = cp->handle;
pkt.res.req_num = rp->req_num;
pkt.res.result = DS_OK;
pkt.res.reason[0] = 0;
@@ -341,10 +352,11 @@ struct ds_panic_res {
char reason[1];
};
-static void domain_panic_data(struct ldc_channel *lp,
- struct ds_cap_state *dp,
+static void domain_panic_data(struct ds_info *dp,
+ struct ds_cap_state *cp,
void *buf, int len)
{
+ struct ldc_channel *lp = dp->lp;
struct ds_data *dpkt = buf;
struct ds_panic_req *rp;
struct {
@@ -354,13 +366,13 @@ static void domain_panic_data(struct ldc_channel *lp,
rp = (struct ds_panic_req *) (dpkt + 1);
- printk(KERN_ALERT PFX "Panic request from "
- "LDOM manager received.\n");
+ printk(KERN_ALERT "ds-%lu: Panic request from "
+ "LDOM manager received.\n", dp->id);
memset(&pkt, 0, sizeof(pkt));
pkt.data.tag.type = DS_DATA;
pkt.data.tag.len = sizeof(pkt) - sizeof(struct ds_msg_tag);
- pkt.data.handle = dp->handle;
+ pkt.data.handle = cp->handle;
pkt.res.req_num = rp->req_num;
pkt.res.result = DS_OK;
pkt.res.reason[0] = 0;
@@ -403,10 +415,11 @@ struct dr_cpu_resp_entry {
__u32 str_off;
};
-static void __dr_cpu_send_error(struct ds_cap_state *cp, struct ds_data *data)
+static void __dr_cpu_send_error(struct ds_info *dp,
+ struct ds_cap_state *cp,
+ struct ds_data *data)
{
struct dr_cpu_tag *tag = (struct dr_cpu_tag *) (data + 1);
- struct ds_info *dp = ds_info;
struct {
struct ds_data data;
struct dr_cpu_tag tag;
@@ -428,12 +441,14 @@ static void __dr_cpu_send_error(struct ds_cap_state *cp, struct ds_data *data)
__ds_send(dp->lp, &pkt, msg_len);
}
-static void dr_cpu_send_error(struct ds_cap_state *cp, struct ds_data *data)
+static void dr_cpu_send_error(struct ds_info *dp,
+ struct ds_cap_state *cp,
+ struct ds_data *data)
{
unsigned long flags;
spin_lock_irqsave(&ds_lock, flags);
- __dr_cpu_send_error(cp, data);
+ __dr_cpu_send_error(dp, cp, data);
spin_unlock_irqrestore(&ds_lock, flags);
}
@@ -511,7 +526,9 @@ static void dr_cpu_mark(struct ds_data *resp, int cpu, int ncpus,
}
}
-static int dr_cpu_configure(struct ds_cap_state *cp, u64 req_num,
+static int dr_cpu_configure(struct ds_info *dp,
+ struct ds_cap_state *cp,
+ u64 req_num,
cpumask_t *mask)
{
struct ds_data *resp;
@@ -533,7 +550,8 @@ static int dr_cpu_configure(struct ds_cap_state *cp, u64 req_num,
for_each_cpu_mask(cpu, *mask) {
int err;
- printk(KERN_INFO PFX "Starting cpu %d...\n", cpu);
+ printk(KERN_INFO "ds-%lu: Starting cpu %d...\n",
+ dp->id, cpu);
err = cpu_up(cpu);
if (err) {
__u32 res = DR_CPU_RES_FAILURE;
@@ -548,14 +566,14 @@ static int dr_cpu_configure(struct ds_cap_state *cp, u64 req_num,
res = DR_CPU_RES_CPU_NOT_RESPONDING;
}
- printk(KERN_INFO PFX "CPU startup failed err=%d\n",
- err);
+ printk(KERN_INFO "ds-%lu: CPU startup failed err=%d\n",
+ dp->id, err);
dr_cpu_mark(resp, cpu, ncpus, res, stat);
}
}
spin_lock_irqsave(&ds_lock, flags);
- __ds_send(ds_info->lp, resp, resp_len);
+ __ds_send(dp->lp, resp, resp_len);
spin_unlock_irqrestore(&ds_lock, flags);
kfree(resp);
@@ -566,7 +584,9 @@ static int dr_cpu_configure(struct ds_cap_state *cp, u64 req_num,
return 0;
}
-static int dr_cpu_unconfigure(struct ds_cap_state *cp, u64 req_num,
+static int dr_cpu_unconfigure(struct ds_info *dp,
+ struct ds_cap_state *cp,
+ u64 req_num,
cpumask_t *mask)
{
struct ds_data *resp;
@@ -586,8 +606,8 @@ static int dr_cpu_unconfigure(struct ds_cap_state *cp, u64 req_num,
for_each_cpu_mask(cpu, *mask) {
int err;
- printk(KERN_INFO PFX "CPU[%d]: Shutting down cpu %d...\n",
- smp_processor_id(), cpu);
+ printk(KERN_INFO "ds-%lu: Shutting down cpu %d...\n",
+ dp->id, cpu);
err = cpu_down(cpu);
if (err)
dr_cpu_mark(resp, cpu, ncpus,
@@ -596,7 +616,7 @@ static int dr_cpu_unconfigure(struct ds_cap_state *cp, u64 req_num,
}
spin_lock_irqsave(&ds_lock, flags);
- __ds_send(ds_info->lp, resp, resp_len);
+ __ds_send(dp->lp, resp, resp_len);
spin_unlock_irqrestore(&ds_lock, flags);
kfree(resp);
@@ -604,7 +624,7 @@ static int dr_cpu_unconfigure(struct ds_cap_state *cp, u64 req_num,
return 0;
}
-static void dr_cpu_data(struct ldc_channel *lp,
+static void dr_cpu_data(struct ds_info *dp,
struct ds_cap_state *cp,
void *buf, int len)
{
@@ -623,7 +643,7 @@ static void dr_cpu_data(struct ldc_channel *lp,
break;
default:
- dr_cpu_send_error(cp, data);
+ dr_cpu_send_error(dp, cp, data);
return;
}
@@ -639,12 +659,12 @@ static void dr_cpu_data(struct ldc_channel *lp,
}
if (tag->type == DR_CPU_CONFIGURE)
- err = dr_cpu_configure(cp, req_num, &mask);
+ err = dr_cpu_configure(dp, cp, req_num, &mask);
else
- err = dr_cpu_unconfigure(cp, req_num, &mask);
+ err = dr_cpu_unconfigure(dp, cp, req_num, &mask);
if (err)
- dr_cpu_send_error(cp, data);
+ dr_cpu_send_error(dp, cp, data);
}
#endif /* CONFIG_HOTPLUG_CPU */
@@ -656,8 +676,8 @@ struct ds_pri_msg {
#define DS_PRI_UPDATE 0x02
};
-static void ds_pri_data(struct ldc_channel *lp,
- struct ds_cap_state *dp,
+static void ds_pri_data(struct ds_info *dp,
+ struct ds_cap_state *cp,
void *buf, int len)
{
struct ds_data *dpkt = buf;
@@ -665,8 +685,8 @@ static void ds_pri_data(struct ldc_channel *lp,
rp = (struct ds_pri_msg *) (dpkt + 1);
- printk(KERN_INFO PFX "PRI REQ [%lx:%lx], len=%d\n",
- rp->req_num, rp->type, len);
+ printk(KERN_INFO "ds-%lu: PRI REQ [%lx:%lx], len=%d\n",
+ dp->id, rp->req_num, rp->type, len);
}
struct ds_var_hdr {
@@ -701,8 +721,8 @@ static DEFINE_MUTEX(ds_var_mutex);
static int ds_var_doorbell;
static int ds_var_response;
-static void ds_var_data(struct ldc_channel *lp,
- struct ds_cap_state *dp,
+static void ds_var_data(struct ds_info *dp,
+ struct ds_cap_state *cp,
void *buf, int len)
{
struct ds_data *dpkt = buf;
@@ -721,14 +741,35 @@ static void ds_var_data(struct ldc_channel *lp,
void ldom_set_var(const char *var, const char *value)
{
- struct ds_info *dp = ds_info;
struct ds_cap_state *cp;
+ struct ds_info *dp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ds_lock, flags);
+ cp = NULL;
+ for (dp = ds_info_list; dp; dp = dp->next) {
+ struct ds_cap_state *tmp;
+
+ tmp = find_cap_by_string(dp, "var-config");
+ if (tmp && tmp->state == CAP_STATE_REGISTERED) {
+ cp = tmp;
+ break;
+ }
+ }
+ if (!cp) {
+ for (dp = ds_info_list; dp; dp = dp->next) {
+ struct ds_cap_state *tmp;
- cp = find_cap_by_string("var-config");
- if (cp->state != CAP_STATE_REGISTERED)
- cp = find_cap_by_string("var-config-backup");
+ tmp = find_cap_by_string(dp, "var-config-backup");
+ if (tmp && tmp->state == CAP_STATE_REGISTERED) {
+ cp = tmp;
+ break;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&ds_lock, flags);
- if (cp->state == CAP_STATE_REGISTERED) {
+ if (cp) {
union {
struct {
struct ds_data data;
@@ -736,7 +777,6 @@ void ldom_set_var(const char *var, const char *value)
} header;
char all[512];
} pkt;
- unsigned long flags;
char *base, *p;
int msg_len, loops;
@@ -777,9 +817,9 @@ void ldom_set_var(const char *var, const char *value)
if (ds_var_doorbell == 0 ||
ds_var_response != DS_VAR_SUCCESS)
- printk(KERN_ERR PFX "var-config [%s:%s] "
+ printk(KERN_ERR "ds-%lu: var-config [%s:%s] "
"failed, response(%d).\n",
- var, value,
+ dp->id, var, value,
ds_var_response);
} else {
printk(KERN_ERR PFX "var-config not registered so "
@@ -811,8 +851,8 @@ void ldom_power_off(void)
static void ds_conn_reset(struct ds_info *dp)
{
- printk(KERN_ERR PFX "ds_conn_reset() from %p\n",
- __builtin_return_address(0));
+ printk(KERN_ERR "ds-%lu: ds_conn_reset() from %p\n",
+ dp->id, __builtin_return_address(0));
}
static int register_services(struct ds_info *dp)
@@ -820,12 +860,12 @@ static int register_services(struct ds_info *dp)
struct ldc_channel *lp = dp->lp;
int i;
- for (i = 0; i < ARRAY_SIZE(ds_states); i++) {
+ for (i = 0; i < dp->num_ds_states; i++) {
struct {
struct ds_reg_req req;
u8 id_buf[256];
} pbuf;
- struct ds_cap_state *cp = &ds_states[i];
+ struct ds_cap_state *cp = &dp->ds_states[i];
int err, msg_len;
u64 new_count;
@@ -870,28 +910,28 @@ static int ds_handshake(struct ds_info *dp, struct ds_msg_tag *pkt)
if (pkt->type == DS_REG_ACK) {
struct ds_reg_ack *ap = (struct ds_reg_ack *) pkt;
- struct ds_cap_state *cp = find_cap(ap->handle);
+ struct ds_cap_state *cp = find_cap(dp, ap->handle);
if (!cp) {
- printk(KERN_ERR PFX "REG ACK for unknown handle %lx\n",
- ap->handle);
+ printk(KERN_ERR "ds-%lu: REG ACK for unknown "
+ "handle %lx\n", dp->id, ap->handle);
return 0;
}
- printk(KERN_INFO PFX "Registered %s service.\n",
- cp->service_id);
+ printk(KERN_INFO "ds-%lu: Registered %s service.\n",
+ dp->id, cp->service_id);
cp->state = CAP_STATE_REGISTERED;
} else if (pkt->type == DS_REG_NACK) {
struct ds_reg_nack *np = (struct ds_reg_nack *) pkt;
- struct ds_cap_state *cp = find_cap(np->handle);
+ struct ds_cap_state *cp = find_cap(dp, np->handle);
if (!cp) {
- printk(KERN_ERR PFX "REG NACK for "
+ printk(KERN_ERR "ds-%lu: REG NACK for "
"unknown handle %lx\n",
- np->handle);
+ dp->id, np->handle);
return 0;
}
- printk(KERN_INFO PFX "Could not register %s service\n",
- cp->service_id);
+ printk(KERN_INFO "ds-%lu: Could not register %s service\n",
+ dp->id, cp->service_id);
cp->state = CAP_STATE_UNKNOWN;
}
@@ -922,6 +962,7 @@ static DECLARE_WAIT_QUEUE_HEAD(ds_wait);
struct ds_queue_entry {
struct list_head list;
+ struct ds_info *dp;
int req_len;
int __pad;
u64 req[0];
@@ -930,7 +971,6 @@ struct ds_queue_entry {
static void process_ds_work(void)
{
struct ds_queue_entry *qp, *tmp;
- static struct ds_info *dp;
unsigned long flags;
LIST_HEAD(todo);
@@ -939,22 +979,22 @@ static void process_ds_work(void)
INIT_LIST_HEAD(&ds_work_list);
spin_unlock_irqrestore(&ds_lock, flags);
- dp = ds_info;
-
list_for_each_entry_safe(qp, tmp, &todo, list) {
struct ds_data *dpkt = (struct ds_data *) qp->req;
- struct ds_cap_state *cp = find_cap(dpkt->handle);
+ struct ds_info *dp = qp->dp;
+ struct ds_cap_state *cp = find_cap(dp, dpkt->handle);
int req_len = qp->req_len;
if (!cp) {
- printk(KERN_ERR PFX "Data for unknown handle %lu\n",
- dpkt->handle);
+ printk(KERN_ERR "ds-%lu: Data for unknown "
+ "handle %lu\n",
+ dp->id, dpkt->handle);
spin_lock_irqsave(&ds_lock, flags);
__send_ds_nack(dp, dpkt->handle);
spin_unlock_irqrestore(&ds_lock, flags);
} else {
- cp->data(dp->lp, cp, dpkt, req_len);
+ cp->data(dp, cp, dpkt, req_len);
}
list_del(&qp->list);
@@ -990,6 +1030,7 @@ static int ds_data(struct ds_info *dp, struct ds_msg_tag *pkt, int len)
if (!qp) {
__send_ds_nack(dp, dpkt->handle);
} else {
+ qp->dp = dp;
memcpy(&qp->req, pkt, len);
list_add_tail(&qp->list, &ds_work_list);
wake_up(&ds_wait);
@@ -1019,8 +1060,8 @@ static void ds_reset(struct ds_info *dp)
dp->hs_state = 0;
- for (i = 0; i < ARRAY_SIZE(ds_states); i++) {
- struct ds_cap_state *cp = &ds_states[i];
+ for (i = 0; i < dp->num_ds_states; i++) {
+ struct ds_cap_state *cp = &dp->ds_states[i];
cp->state = CAP_STATE_UNKNOWN;
}
@@ -1048,7 +1089,8 @@ static void ds_event(void *arg, int event)
}
if (event != LDC_EVENT_DATA_READY) {
- printk(KERN_WARNING PFX "Unexpected LDC event %d\n", event);
+ printk(KERN_WARNING "ds-%lu: Unexpected LDC event %d\n",
+ dp->id, event);
spin_unlock_irqrestore(&ds_lock, flags);
return;
}
@@ -1099,9 +1141,11 @@ static int __devinit ds_probe(struct vio_dev *vdev,
.mtu = 4096,
.mode = LDC_MODE_STREAM,
};
+ struct mdesc_handle *hp;
struct ldc_channel *lp;
struct ds_info *dp;
- int err;
+ const u64 *val;
+ int err, i;
if (ds_version_printed++ == 0)
printk(KERN_INFO "%s", version);
@@ -1111,19 +1155,37 @@ static int __devinit ds_probe(struct vio_dev *vdev,
if (!dp)
goto out_err;
+ hp = mdesc_grab();
+ val = mdesc_get_property(hp, vdev->mp, "id", NULL);
+ if (val)
+ dp->id = *val;
+ mdesc_release(hp);
+
dp->rcv_buf = kzalloc(4096, GFP_KERNEL);
if (!dp->rcv_buf)
goto out_free_dp;
dp->rcv_buf_len = 4096;
+ dp->ds_states = kzalloc(sizeof(ds_states_template),
+ GFP_KERNEL);
+ if (!dp->ds_states)
+ goto out_free_rcv_buf;
+
+ memcpy(dp->ds_states, ds_states_template,
+ sizeof(ds_states_template));
+ dp->num_ds_states = ARRAY_SIZE(ds_states_template);
+
+ for (i = 0; i < dp->num_ds_states; i++)
+ dp->ds_states[i].handle = ((u64)i << 32);
+
ds_cfg.tx_irq = vdev->tx_irq;
ds_cfg.rx_irq = vdev->rx_irq;
lp = ldc_alloc(vdev->channel_id, &ds_cfg, dp);
if (IS_ERR(lp)) {
err = PTR_ERR(lp);
- goto out_free_rcv_buf;
+ goto out_free_ds_states;
}
dp->lp = lp;
@@ -1131,13 +1193,19 @@ static int __devinit ds_probe(struct vio_dev *vdev,
if (err)
goto out_free_ldc;
- ds_info = dp;
+ spin_lock_irq(&ds_lock);
+ dp->next = ds_info_list;
+ ds_info_list = dp;
+ spin_unlock_irq(&ds_lock);
return err;
out_free_ldc:
ldc_free(dp->lp);
+out_free_ds_states:
+ kfree(dp->ds_states);
+
out_free_rcv_buf:
kfree(dp->rcv_buf);
@@ -1172,11 +1240,6 @@ static struct vio_driver ds_driver = {
static int __init ds_init(void)
{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(ds_states); i++)
- ds_states[i].handle = ((u64)i << 32);
-
kthread_run(ds_thread, NULL, "kldomd");
return vio_register_driver(&ds_driver);
generated by cgit v1.1 at 2024-11-11 01:44:42 +0000