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Diffstat (limited to 'arch/sparc/kernel/ds.c')
-rw-r--r--arch/sparc/kernel/ds.c92
1 files changed, 60 insertions, 32 deletions
diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c
index 4a700f4b79c..dff60abbea0 100644
--- a/arch/sparc/kernel/ds.c
+++ b/arch/sparc/kernel/ds.c
@@ -15,18 +15,21 @@
#include <linux/reboot.h>
#include <linux/cpu.h>
+#include <asm/hypervisor.h>
#include <asm/ldc.h>
#include <asm/vio.h>
#include <asm/mdesc.h>
#include <asm/head.h>
#include <asm/irq.h>
+#include "kernel.h"
+
#define DRV_MODULE_NAME "ds"
#define PFX DRV_MODULE_NAME ": "
#define DRV_MODULE_VERSION "1.0"
#define DRV_MODULE_RELDATE "Jul 11, 2007"
-static char version[] __devinitdata =
+static char version[] =
DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
MODULE_DESCRIPTION("Sun LDOM domain services driver");
@@ -497,7 +500,7 @@ static void dr_cpu_init_response(struct ds_data *resp, u64 req_num,
tag->num_records = ncpus;
i = 0;
- for_each_cpu_mask(cpu, *mask) {
+ for_each_cpu(cpu, mask) {
ent[i].cpu = cpu;
ent[i].result = DR_CPU_RES_OK;
ent[i].stat = default_stat;
@@ -525,16 +528,14 @@ static void dr_cpu_mark(struct ds_data *resp, int cpu, int ncpus,
}
}
-static int __cpuinit dr_cpu_configure(struct ds_info *dp,
- struct ds_cap_state *cp,
- u64 req_num,
- cpumask_t *mask)
+static int dr_cpu_configure(struct ds_info *dp, struct ds_cap_state *cp,
+ u64 req_num, cpumask_t *mask)
{
struct ds_data *resp;
int resp_len, ncpus, cpu;
unsigned long flags;
- ncpus = cpus_weight(*mask);
+ ncpus = cpumask_weight(mask);
resp_len = dr_cpu_size_response(ncpus);
resp = kzalloc(resp_len, GFP_KERNEL);
if (!resp)
@@ -547,7 +548,7 @@ static int __cpuinit dr_cpu_configure(struct ds_info *dp,
mdesc_populate_present_mask(mask);
mdesc_fill_in_cpu_data(mask);
- for_each_cpu_mask(cpu, *mask) {
+ for_each_cpu(cpu, mask) {
int err;
printk(KERN_INFO "ds-%llu: Starting cpu %d...\n",
@@ -593,7 +594,7 @@ static int dr_cpu_unconfigure(struct ds_info *dp,
int resp_len, ncpus, cpu;
unsigned long flags;
- ncpus = cpus_weight(*mask);
+ ncpus = cpumask_weight(mask);
resp_len = dr_cpu_size_response(ncpus);
resp = kzalloc(resp_len, GFP_KERNEL);
if (!resp)
@@ -603,7 +604,7 @@ static int dr_cpu_unconfigure(struct ds_info *dp,
resp_len, ncpus, mask,
DR_CPU_STAT_UNCONFIGURED);
- for_each_cpu_mask(cpu, *mask) {
+ for_each_cpu(cpu, mask) {
int err;
printk(KERN_INFO "ds-%llu: Shutting down cpu %d...\n",
@@ -624,9 +625,8 @@ static int dr_cpu_unconfigure(struct ds_info *dp,
return 0;
}
-static void __cpuinit dr_cpu_data(struct ds_info *dp,
- struct ds_cap_state *cp,
- void *buf, int len)
+static void dr_cpu_data(struct ds_info *dp, struct ds_cap_state *cp, void *buf,
+ int len)
{
struct ds_data *data = buf;
struct dr_cpu_tag *tag = (struct dr_cpu_tag *) (data + 1);
@@ -649,13 +649,13 @@ static void __cpuinit dr_cpu_data(struct ds_info *dp,
purge_dups(cpu_list, tag->num_records);
- cpus_clear(mask);
+ cpumask_clear(&mask);
for (i = 0; i < tag->num_records; i++) {
if (cpu_list[i] == CPU_SENTINEL)
continue;
if (cpu_list[i] < nr_cpu_ids)
- cpu_set(cpu_list[i], mask);
+ cpumask_set_cpu(cpu_list[i], &mask);
}
if (tag->type == DR_CPU_CONFIGURE)
@@ -780,6 +780,16 @@ void ldom_set_var(const char *var, const char *value)
char *base, *p;
int msg_len, loops;
+ if (strlen(var) + strlen(value) + 2 >
+ sizeof(pkt) - sizeof(pkt.header)) {
+ printk(KERN_ERR PFX
+ "contents length: %zu, which more than max: %lu,"
+ "so could not set (%s) variable to (%s).\n",
+ strlen(var) + strlen(value) + 2,
+ sizeof(pkt) - sizeof(pkt.header), var, value);
+ return;
+ }
+
memset(&pkt, 0, sizeof(pkt));
pkt.header.data.tag.type = DS_DATA;
pkt.header.data.handle = cp->handle;
@@ -828,18 +838,32 @@ void ldom_set_var(const char *var, const char *value)
}
}
+static char full_boot_str[256] __attribute__((aligned(32)));
+static int reboot_data_supported;
+
void ldom_reboot(const char *boot_command)
{
/* Don't bother with any of this if the boot_command
* is empty.
*/
if (boot_command && strlen(boot_command)) {
- char full_boot_str[256];
+ unsigned long len;
+
+ snprintf(full_boot_str, sizeof(full_boot_str), "boot %s",
+ boot_command);
+ len = strlen(full_boot_str);
- strcpy(full_boot_str, "boot ");
- strcpy(full_boot_str + strlen("boot "), boot_command);
+ if (reboot_data_supported) {
+ unsigned long ra = kimage_addr_to_ra(full_boot_str);
+ unsigned long hv_ret;
- ldom_set_var("reboot-command", full_boot_str);
+ hv_ret = sun4v_reboot_data_set(ra, len);
+ if (hv_ret != HV_EOK)
+ pr_err("SUN4V: Unable to set reboot data "
+ "hv_ret=%lu\n", hv_ret);
+ } else {
+ ldom_set_var("reboot-command", full_boot_str);
+ }
}
sun4v_mach_sir();
}
@@ -851,7 +875,7 @@ void ldom_power_off(void)
static void ds_conn_reset(struct ds_info *dp)
{
- printk(KERN_ERR "ds-%llu: ds_conn_reset() from %p\n",
+ printk(KERN_ERR "ds-%llu: ds_conn_reset() from %pf\n",
dp->id, __builtin_return_address(0));
}
@@ -1129,8 +1153,7 @@ static void ds_event(void *arg, int event)
spin_unlock_irqrestore(&ds_lock, flags);
}
-static int __devinit ds_probe(struct vio_dev *vdev,
- const struct vio_device_id *id)
+static int ds_probe(struct vio_dev *vdev, const struct vio_device_id *id)
{
static int ds_version_printed;
struct ldc_channel_config ds_cfg = {
@@ -1164,13 +1187,11 @@ static int __devinit ds_probe(struct vio_dev *vdev,
dp->rcv_buf_len = 4096;
- dp->ds_states = kzalloc(sizeof(ds_states_template),
- GFP_KERNEL);
+ dp->ds_states = kmemdup(ds_states_template,
+ 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++)
@@ -1218,7 +1239,7 @@ static int ds_remove(struct vio_dev *vdev)
return 0;
}
-static struct vio_device_id __initdata ds_match[] = {
+static const struct vio_device_id ds_match[] = {
{
.type = "domain-services-port",
},
@@ -1229,17 +1250,24 @@ static struct vio_driver ds_driver = {
.id_table = ds_match,
.probe = ds_probe,
.remove = ds_remove,
- .driver = {
- .name = "ds",
- .owner = THIS_MODULE,
- }
+ .name = "ds",
};
static int __init ds_init(void)
{
+ unsigned long hv_ret, major, minor;
+
+ if (tlb_type == hypervisor) {
+ hv_ret = sun4v_get_version(HV_GRP_REBOOT_DATA, &major, &minor);
+ if (hv_ret == HV_EOK) {
+ pr_info("SUN4V: Reboot data supported (maj=%lu,min=%lu).\n",
+ major, minor);
+ reboot_data_supported = 1;
+ }
+ }
kthread_run(ds_thread, NULL, "kldomd");
return vio_register_driver(&ds_driver);
}
-subsys_initcall(ds_init);
+fs_initcall(ds_init);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 16:29:42 +0000