static void *
acpi_init(struct nvkm_bios *bios, const char *name)
{
if (!nouveau_acpi_rom_supported(nv_device(bios)->pdev))
return ERR_PTR(-ENODEV);
return NULL;
}
static void
nouveau_bios_shadow_acpi(struct nouveau_bios *bios)
{
struct pci_dev *pdev = nv_device(bios)->pdev;
int ret, cnt, i;
if (!nouveau_acpi_rom_supported(pdev)) {
bios->data = NULL;
return;
}
bios->size = 0;
bios->data = kmalloc(4096, GFP_KERNEL);
if (bios->data) {
if (nouveau_acpi_get_bios_chunk(bios->data, 0, 4096) == 4096)
bios->size = bios->data[2] * 512;
kfree(bios->data);
}
if (!bios->size)
return;
bios->data = kmalloc(bios->size, GFP_KERNEL);
if (bios->data) {
/* disobey the acpi spec - much faster on at least w530 ... */
ret = nouveau_acpi_get_bios_chunk(bios->data, 0, bios->size);
if (ret != bios->size ||
nvbios_checksum(bios->data, bios->size)) {
/* ... that didn't work, ok, i'll be good now */
for (i = 0; i < bios->size; i += cnt) {
cnt = min((bios->size - i), (u32)4096);
ret = nouveau_acpi_get_bios_chunk(bios->data, i, cnt);
if (ret != cnt)
break;
}
}
}
}