status_t
Transaction::RegisterBlock(uint64 blockIndex)
{
ASSERT(fID >= 0);
// look it up -- maybe it's already registered
BlockInfo* info = fBlockInfos.Lookup(blockIndex);
if (info != NULL) {
info->refCount++;
return B_OK;
}
// nope, create a new one
info = new(std::nothrow) BlockInfo;
if (info == NULL)
RETURN_ERROR(B_NO_MEMORY);
ObjectDeleter<BlockInfo> infoDeleter(info);
info->indexAndCheckSum.blockIndex = blockIndex;
info->refCount = 1;
info->dirty = false;
// get the old check sum
if (ioctl(fVolume->FD(), CHECKSUM_DEVICE_IOCTL_GET_CHECK_SUM,
&info->indexAndCheckSum, sizeof(info->indexAndCheckSum)) < 0) {
RETURN_ERROR(errno);
}
// get the data (we're fine with read-only)
info->data = block_cache_get(fVolume->BlockCache(), blockIndex);
if (info->data == NULL) {
delete info;
RETURN_ERROR(B_ERROR);
}
fBlockInfos.Insert(infoDeleter.Detach());
return B_OK;
}
static status_t
openpic_init_driver(device_node *node, void **cookie)
{
// OK, this module is broken for now. But it compiles.
return B_ERROR;
openpic_info *info = new(nothrow) openpic_info;
if (!info)
return B_NO_MEMORY;
ObjectDeleter<openpic_info> infoDeleter(info);
info->node = node;
// get interface to PCI device
void *aCookie;
void *anotherCookie; // possibly the same cookie.
driver_module_info *driver;
status_t status = sDeviceManager->get_driver(sDeviceManager->get_parent_node(node),
&driver, &aCookie);
if (status != B_OK)
return status;
driver->init_driver(node, &anotherCookie);
/* status = sDeviceManager->init_driver(
sDeviceManager->get_parent(node), NULL,
(driver_module_info**)&info->pci, (void**)&info->device);
if (status != B_OK)
return status; */
// get the pci info for the device
pci_info pciInfo;
info->pci->get_pci_info(info->device, &pciInfo);
// find supported device info
info->supported_device = openpic_check_supported_device(pciInfo.vendor_id,
pciInfo.device_id);
if (!info->supported_device) {
dprintf("openpic: device (0x%04hx:0x%04hx) not supported\n",
pciInfo.vendor_id, pciInfo.device_id);
return B_ERROR;
}
dprintf("openpic: found supported device: %s (0x%04hx:0x%04hx)\n",
info->supported_device->name, pciInfo.vendor_id, pciInfo.device_id);
// get register space
addr_t physicalRegisterBase = pciInfo.u.h0.base_registers[0];
uint32 registerSpaceSize = pciInfo.u.h0.base_register_sizes[0];
if (registerSpaceSize < info->supported_device->register_offset
|| registerSpaceSize - info->supported_device->register_offset
< OPENPIC_MIN_REGISTER_SPACE_SIZE) {
dprintf("openpic: register space too small\n");
}
physicalRegisterBase += info->supported_device->register_offset;
registerSpaceSize -= info->supported_device->register_offset;
if (registerSpaceSize > OPENPIC_MAX_REGISTER_SPACE_SIZE)
registerSpaceSize = OPENPIC_MAX_REGISTER_SPACE_SIZE;
// map register space
void *virtualRegisterBase = NULL;
area_id registerArea = map_physical_memory("openpic registers",
(void*)physicalRegisterBase, registerSpaceSize, B_ANY_KERNEL_ADDRESS,
B_KERNEL_READ_AREA | B_KERNEL_WRITE_AREA, &virtualRegisterBase);
if (registerArea < 0)
return info->register_area;
info->physical_registers = physicalRegisterBase;
info->register_space_size = registerSpaceSize;
info->register_area = registerArea;
info->virtual_registers = (addr_t)virtualRegisterBase;
// init the controller
status = openpic_init(info);
if (status != B_OK)
return status;
// keep the info
infoDeleter.Detach();
*cookie = info;
dprintf("openpic_init_driver(): Successfully initialized!\n");
return B_OK;
}