int gnttab_resume(void)
{
unsigned int max_nr_gframes;
gnttab_request_version();
max_nr_gframes = gnttab_max_grant_frames();
if (max_nr_gframes < nr_grant_frames)
return -ENOSYS;
if (xen_pv_domain())
return gnttab_map(0, nr_grant_frames - 1);
if (gnttab_shared.addr == NULL) {
gnttab_shared.addr = ioremap(xen_hvm_resume_frames,
PAGE_SIZE * max_nr_gframes);
if (gnttab_shared.addr == NULL) {
printk(KERN_WARNING
"Failed to ioremap gnttab share frames!");
return -ENOMEM;
}
}
gnttab_map(0, nr_grant_frames - 1);
return 0;
}
int gnttab_resume(void)
{
unsigned int max_nr_gframes;
max_nr_gframes = gnttab_max_grant_frames();
if (max_nr_gframes < nr_grant_frames)
return -ENOSYS;
if (xen_pv_domain())
return gnttab_map(0, nr_grant_frames - 1);
if (!shared) {
shared = ioremap(xen_hvm_resume_frames, PAGE_SIZE * max_nr_gframes);
if (shared == NULL) {
#ifdef CONFIG_DEBUG_PRINTK
printk(KERN_WARNING
"Failed to ioremap gnttab share frames!");
#else
;
#endif
return -ENOMEM;
}
}
gnttab_map(0, nr_grant_frames - 1);
return 0;
}
static int gnttab_setup(void)
{
int rc;
unsigned int max_nr_gframes;
max_nr_gframes = gnttab_max_grant_frames();
if (max_nr_gframes < nr_grant_frames)
return -ENOSYS;
if (xen_pv_domain() && xen_feature(XENFEAT_auto_translated_physmap) &&
!gnttab_shared.addr) {
rc = xlated_setup_gnttab_pages((unsigned long)max_nr_gframes,
&gnttab_shared.addr);
if (rc != 0)
return rc;
}
if (xen_pv_domain())
return gnttab_map(0, nr_grant_frames - 1);
if (gnttab_shared.addr == NULL) {
gnttab_shared.addr = xen_remap(xen_hvm_resume_frames,
PAGE_SIZE * max_nr_gframes);
if (gnttab_shared.addr == NULL) {
printk(KERN_WARNING
"Failed to ioremap gnttab share frames!");
return -ENOMEM;
}
}
gnttab_map(0, nr_grant_frames - 1);
return 0;
}
int
gnttab_resume(void)
{
if (max_nr_grant_frames() < nr_grant_frames)
return (ENOSYS);
return (gnttab_map(0, nr_grant_frames - 1));
}
static int gnttab_expand(unsigned int req_entries)
{
int rc;
unsigned int cur, extra;
cur = nr_grant_frames;
extra = ((req_entries + (ENTRIES_PER_GRANT_FRAME-1)) /
ENTRIES_PER_GRANT_FRAME);
if (cur + extra > max_nr_grant_frames())
return -ENOSPC;
if ((rc = gnttab_map(cur, cur + extra - 1)) == 0)
rc = grow_gnttab_list(extra);
return rc;
}
static int
gnttab_expand(unsigned int req_entries)
{
int error;
unsigned int cur, extra;
cur = nr_grant_frames;
extra = howmany(req_entries, GREFS_PER_GRANT_FRAME);
if (cur + extra > max_nr_grant_frames())
return (ENOSPC);
error = gnttab_map(cur, cur + extra - 1);
if (!error)
error = grow_gnttab_list(extra);
return (error);
}
static int gnttab_setup(void)
{
unsigned int max_nr_gframes;
max_nr_gframes = gnttab_max_grant_frames();
if (max_nr_gframes < nr_grant_frames)
return -ENOSYS;
if (xen_feature(XENFEAT_auto_translated_physmap) && gnttab_shared.addr == NULL) {
gnttab_shared.addr = xen_auto_xlat_grant_frames.vaddr;
if (gnttab_shared.addr == NULL) {
pr_warn("gnttab share frames (addr=0x%08lx) is not mapped!\n",
(unsigned long)xen_auto_xlat_grant_frames.vaddr);
return -ENOMEM;
}
}
return gnttab_map(0, nr_grant_frames - 1);
}
static int gnttab_expand(unsigned int req_entries)
{
int rc;
unsigned int cur, extra;
BUG_ON(grefs_per_grant_frame == 0);
cur = nr_grant_frames;
extra = ((req_entries + (grefs_per_grant_frame-1)) /
grefs_per_grant_frame);
if (cur + extra > gnttab_max_grant_frames())
return -ENOSPC;
rc = gnttab_map(cur, cur + extra - 1);
if (rc == 0)
rc = grow_gnttab_list(extra);
return rc;
}
int gnttab_resume(void)
{
unsigned int max_nr_gframes, nr_gframes;
nr_gframes = nr_grant_frames;
max_nr_gframes = max_nr_grant_frames();
if (max_nr_gframes < nr_gframes)
return -ENOSYS;
if (!resume_frames) {
resume_frames = alloc_xen_mmio(PAGE_SIZE * max_nr_gframes);
shared = ioremap(resume_frames, PAGE_SIZE * max_nr_gframes);
if (shared == NULL) {
printk("error to ioremap gnttab share frames\n");
return -1;
}
}
gnttab_map(0, nr_gframes - 1);
return 0;
}
int
gnttab_resume(void)
{
int error;
unsigned int max_nr_gframes, nr_gframes;
nr_gframes = nr_grant_frames;
max_nr_gframes = max_nr_grant_frames();
if (max_nr_gframes < nr_gframes)
return (ENOSYS);
if (!resume_frames) {
error = xenpci_alloc_space(PAGE_SIZE * max_nr_gframes,
&resume_frames);
if (error) {
printf("error mapping gnttab share frames\n");
return (error);
}
}
return (gnttab_map(0, nr_gframes - 1));
}
int
gnttab_resume(device_t dev)
{
unsigned int max_nr_gframes, nr_gframes;
nr_gframes = nr_grant_frames;
max_nr_gframes = max_nr_grant_frames();
if (max_nr_gframes < nr_gframes)
return (ENOSYS);
if (!resume_frames) {
KASSERT(dev != NULL,
("No resume frames and no device provided"));
gnttab_pseudo_phys_res = xenmem_alloc(dev,
&gnttab_pseudo_phys_res_id, PAGE_SIZE * max_nr_gframes);
if (gnttab_pseudo_phys_res == NULL)
panic("Unable to reserve physical memory for gnttab");
resume_frames = rman_get_start(gnttab_pseudo_phys_res);
}
return (gnttab_map(0, nr_gframes - 1));
}
int gnttab_resume(void)
{
if (max_nr_grant_frames() < nr_grant_frames)
return 0;
return gnttab_map(0, nr_grant_frames - 1);
}
static int gnttab_resume(void)
{
if (max_nr_grant_frames() < nr_grant_frames)
return -ENOSYS;
return gnttab_map(0, nr_grant_frames - 1);
}
static int gnttab_resume(struct sys_device *dev)
{
if (max_nr_grant_frames() < nr_grant_frames)
return -ENOSYS;
return gnttab_map(0, nr_grant_frames - 1);
}
