+/*
+ * calgary_init_bitmap_from_tce_table():
+ * Funtion for kdump case. In the second/kdump kernel initialize
+ * the bitmap based on the tce table entries obtained from first kernel
+ */
+static void calgary_init_bitmap_from_tce_table(struct iommu_table *tbl)
+{
+ u64 *tp;
+ unsigned int index;
+ tp = ((u64 *)tbl->it_base);
+ for (index = 0 ; index < tbl->it_size; index++) {
+ if (*tp != 0x0)
+ set_bit(index, tbl->it_map);
+ tp++;
+ }
+}
+
+/*
+ * get_tce_space_from_tar():
+ * Function for kdump case. Get the tce tables from first kernel
+ * by reading the contents of the base adress register of calgary iommu
+ */
+static void get_tce_space_from_tar()
+{
+ int bus;
+ void __iomem *target;
+ unsigned long tce_space;
+
+ for (bus = 0; bus < MAX_PHB_BUS_NUM; bus++) {
+ struct calgary_bus_info *info = &bus_info[bus];
+ unsigned short pci_device;
+ u32 val;
+
+ val = read_pci_config(bus, 0, 0, 0);
+ pci_device = (val & 0xFFFF0000) >> 16;
+
+ if (!is_cal_pci_dev(pci_device))
+ continue;
+ if (info->translation_disabled)
+ continue;
+
+ if (calgary_bus_has_devices(bus, pci_device) ||
+ translate_empty_slots) {
+ target = calgary_reg(bus_info[bus].bbar,
+ tar_offset(bus));
+ tce_space = be64_to_cpu(readq(target));
+ tce_space = tce_space & TAR_SW_BITS;
+
+ tce_space = tce_space & (~specified_table_size);
+ info->tce_space = (u64 *)__va(tce_space);
+ }
+ }
+ return;
+}
+