+#if defined(CONFIG_X86_IO_APIC) && (defined(CONFIG_ACPI_INTERPRETER) || defined(CONFIG_ACPI_BOOT))
+static unsigned long cycle_irqs = 0;
+static unsigned long free_irqs = 0;
+static int gsi_map[MAX_GSI_MAPSIZE] = { [0 ... MAX_GSI_MAPSIZE-1] = -1 };
+
+/*
+ * GSI override for ES7000 platforms.
+ */
+
+static int __init
+es7000_gsi_override(int ioapic, int gsi)
+{
+ static int newgsi = 0;
+
+ if (gsi_map[gsi] != -1)
+ gsi = gsi_map[gsi];
+ else if (cycle_irqs ^ free_irqs) {
+ newgsi = find_next_bit(&cycle_irqs, IOAPIC_GSI_BOUND(0), newgsi);
+ __set_bit(newgsi, &free_irqs);
+ gsi_map[gsi] = newgsi;
+ gsi = newgsi;
+ newgsi++;
+ Dprintk("es7000_gsi_override: free_irqs = 0x%lx\n", free_irqs);
+ }
+
+ return gsi;
+}
+