long
xencomm_hypercall_opt_feature(void *arg)
{
return xencomm_arch_hypercall_opt_feature(
xencomm_map_no_alloc(arg,
sizeof(struct xen_ia64_opt_feature)));
}
int
xencomm_hypercall_physdev_op(int cmd, void *op)
{
unsigned int argsize;
switch (cmd) {
case PHYSDEVOP_apic_read:
case PHYSDEVOP_apic_write:
argsize = sizeof(struct physdev_apic);
break;
case PHYSDEVOP_alloc_irq_vector:
case PHYSDEVOP_free_irq_vector:
argsize = sizeof(struct physdev_irq);
break;
case PHYSDEVOP_irq_status_query:
argsize = sizeof(struct physdev_irq_status_query);
break;
default:
printk(KERN_DEBUG
"%s: unknown physdev op %d\n", __func__, cmd);
return -ENOSYS;
}
return xencomm_arch_hypercall_physdev_op
(cmd, xencomm_map_no_alloc(op, argsize));
}
int
xencomm_hypercall_event_channel_op(int cmd, void *op)
{
struct xencomm_handle *desc;
desc = xencomm_map_no_alloc(op, sizeof(struct evtchn_op));
if (desc == NULL)
return -EINVAL;
return xencomm_arch_hypercall_event_channel_op(cmd, desc);
}
int
xencomm_hypercall_suspend(unsigned long srec)
{
struct sched_shutdown arg;
arg.reason = SHUTDOWN_suspend;
return xencomm_arch_hypercall_sched_op(
SCHEDOP_shutdown, xencomm_map_no_alloc(&arg, sizeof(arg)));
}
int
xencomm_hypercall_memory_op(unsigned int cmd, void *arg)
{
GUEST_HANDLE(xen_pfn_t) extent_start_va[2] = { {NULL}, {NULL} };
struct xen_memory_reservation *xmr = NULL;
int rc;
struct xencomm_handle *desc;
unsigned int argsize;
XENCOMM_MINI_ALIGNED(xc_area, 2);
switch (cmd) {
case XENMEM_increase_reservation:
case XENMEM_decrease_reservation:
case XENMEM_populate_physmap:
xmr = (struct xen_memory_reservation *)arg;
set_xen_guest_handle(extent_start_va[0],
xen_guest_handle(xmr->extent_start));
argsize = sizeof(*xmr);
rc = xencommize_memory_reservation(xc_area, xmr);
if (rc)
return rc;
xc_area++;
break;
case XENMEM_maximum_ram_page:
argsize = 0;
break;
case XENMEM_add_to_physmap:
argsize = sizeof(struct xen_add_to_physmap);
break;
default:
printk(KERN_DEBUG "%s: unknown memory op %d\n", __func__, cmd);
return -ENOSYS;
}
desc = xencomm_map_no_alloc(arg, argsize);
if (desc == NULL)
return -EINVAL;
rc = xencomm_arch_hypercall_memory_op(cmd, desc);
switch (cmd) {
case XENMEM_increase_reservation:
case XENMEM_decrease_reservation:
case XENMEM_populate_physmap:
set_xen_guest_handle(xmr->extent_start,
xen_guest_handle(extent_start_va[0]));
break;
}
return rc;
}
int
xencomm_hypercall_console_io(int cmd, int count, char *str)
{
/* xen early printk uses console io hypercall before
* xencomm initialization. In that case, we just ignore it.
*/
if (!xencomm_is_initialized())
return 0;
return xencomm_arch_hypercall_console_io
(cmd, count, xencomm_map_no_alloc(str, count));
}
long
xencomm_hypercall_vcpu_op(int cmd, int cpu, void *arg)
{
unsigned int argsize;
switch (cmd) {
case VCPUOP_register_runstate_memory_area: {
struct vcpu_register_runstate_memory_area *area =
(struct vcpu_register_runstate_memory_area *)arg;
argsize = sizeof(*arg);
set_xen_guest_handle(area->addr.h,
(void *)xencomm_map_no_alloc(area->addr.v,
sizeof(area->addr.v)));
break;
}
default:
printk(KERN_DEBUG "%s: unknown vcpu op %d\n", __func__, cmd);
return -ENOSYS;
}
return xencomm_arch_hypercall_vcpu_op(cmd, cpu,
xencomm_map_no_alloc(arg, argsize));
}
int
xencomm_hypercall_sched_op(int cmd, void *arg)
{
struct xencomm_handle *desc;
unsigned int argsize;
switch (cmd) {
case SCHEDOP_yield:
case SCHEDOP_block:
argsize = 0;
break;
case SCHEDOP_shutdown:
argsize = sizeof(struct sched_shutdown);
break;
case SCHEDOP_poll:
{
struct sched_poll *poll = arg;
struct xencomm_handle *ports;
argsize = sizeof(struct sched_poll);
ports = xencomm_map_no_alloc(xen_guest_handle(poll->ports),
sizeof(*xen_guest_handle(poll->ports)));
set_xen_guest_handle(poll->ports, (void *)ports);
break;
}
default:
printk(KERN_DEBUG "%s: unknown sched op %d\n", __func__, cmd);
return -ENOSYS;
}
desc = xencomm_map_no_alloc(arg, argsize);
if (desc == NULL)
return -EINVAL;
return xencomm_arch_hypercall_sched_op(cmd, desc);
}
int
xencomm_hypercall_multicall(void *call_list, int nr_calls)
{
int rc;
int i;
struct multicall_entry *mce;
struct xencomm_handle *desc;
XENCOMM_MINI_ALIGNED(xc_area, nr_calls * 2);
for (i = 0; i < nr_calls; i++) {
mce = (struct multicall_entry *)call_list + i;
switch (mce->op) {
case __HYPERVISOR_update_va_mapping:
case __HYPERVISOR_mmu_update:
/* No-op on ia64. */
break;
case __HYPERVISOR_grant_table_op:
rc = xencommize_grant_table_op
(&xc_area,
mce->args[0], (void *)mce->args[1],
mce->args[2], &desc);
if (rc)
return rc;
mce->args[1] = (unsigned long)desc;
break;
case __HYPERVISOR_memory_op:
default:
printk(KERN_DEBUG
"%s: unhandled multicall op entry op %lu\n",
__func__, mce->op);
return -ENOSYS;
}
}
desc = xencomm_map_no_alloc(call_list,
nr_calls * sizeof(struct multicall_entry));
if (desc == NULL)
return -EINVAL;
return xencomm_arch_hypercall_multicall(desc, nr_calls);
}
int
xencomm_hypercall_callback_op(int cmd, void *arg)
{
unsigned int argsize;
switch (cmd) {
case CALLBACKOP_register:
argsize = sizeof(struct callback_register);
break;
case CALLBACKOP_unregister:
argsize = sizeof(struct callback_unregister);
break;
default:
printk(KERN_DEBUG
"%s: unknown callback op %d\n", __func__, cmd);
return -ENOSYS;
}
return xencomm_arch_hypercall_callback_op
(cmd, xencomm_map_no_alloc(arg, argsize));
}
int
xencomm_hypercall_xen_version(int cmd, void *arg)
{
struct xencomm_handle *desc;
unsigned int argsize;
switch (cmd) {
case XENVER_version:
/* do not actually pass an argument */
return xencomm_arch_hypercall_xen_version(cmd, 0);
case XENVER_extraversion:
argsize = sizeof(struct xen_extraversion);
break;
case XENVER_compile_info:
argsize = sizeof(struct xen_compile_info);
break;
case XENVER_capabilities:
argsize = sizeof(struct xen_capabilities_info);
break;
case XENVER_changeset:
argsize = sizeof(struct xen_changeset_info);
break;
case XENVER_platform_parameters:
argsize = sizeof(struct xen_platform_parameters);
break;
case XENVER_get_features:
argsize = (arg == NULL) ? 0 : sizeof(struct xen_feature_info);
break;
default:
printk(KERN_DEBUG
"%s: unknown version op %d\n", __func__, cmd);
return -ENOSYS;
}
desc = xencomm_map_no_alloc(arg, argsize);
if (desc == NULL)
return -EINVAL;
return xencomm_arch_hypercall_xen_version(cmd, desc);
}
int HYPERVISOR_grant_table_op(unsigned int cmd, void *op, unsigned int count)
{
void *desc;
void *frame_list = NULL;
int argsize;
int ret = -ENOMEM;
switch (cmd) {
case GNTTABOP_map_grant_ref:
argsize = sizeof(struct gnttab_map_grant_ref);
break;
case GNTTABOP_unmap_grant_ref:
gnttab_pre_unmap_grant_ref(op, count);
argsize = sizeof(struct gnttab_unmap_grant_ref);
break;
case GNTTABOP_setup_table: {
struct gnttab_setup_table setup;
memcpy(&setup, op, sizeof(setup));
argsize = sizeof(setup);
frame_list = xencomm_map(
xen_guest_handle(setup.frame_list),
(sizeof(*xen_guest_handle(setup.frame_list))
* setup.nr_frames));
if (frame_list == NULL)
return -ENOMEM;
set_xen_guest_handle(setup.frame_list, frame_list);
memcpy(op, &setup, sizeof(setup));
}
break;
case GNTTABOP_dump_table:
argsize = sizeof(struct gnttab_dump_table);
break;
case GNTTABOP_transfer:
BUG();
argsize = sizeof(struct gnttab_transfer);
break;
case GNTTABOP_copy:
argsize = sizeof(struct gnttab_transfer);
break;
case GNTTABOP_query_size:
argsize = sizeof(struct gnttab_query_size);
break;
default:
printk(KERN_EMERG "%s: unknown grant table op %d\n",
__func__, cmd);
return -ENOSYS;
}
desc = xencomm_map_no_alloc(op, argsize);
if (desc) {
ret = plpar_hcall_norets(XEN_MARK(__HYPERVISOR_grant_table_op),
cmd, desc, count);
if (!ret && cmd == GNTTABOP_map_grant_ref)
gnttab_post_map_grant_ref(op, count);
xencomm_free(desc);
}
xencomm_free(frame_list);
return ret;
}
