1 files changed, 105 insertions, 0 deletions
diff --git a/arch/i386/mach-visws/mpparse.c b/arch/i386/mach-visws/mpparse.c
new file mode 100644
index 0000000..5a22082
--- /dev/null
+++ b/arch/i386/mach-visws/mpparse.c
@@ -0,0 +1,105 @@
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+
+#include <asm/smp.h>
+#include <asm/io.h>
+
+#include "cobalt.h"
+#include "mach_apic.h"
+
+/* Have we found an MP table */
+int smp_found_config;
+
+/*
+ * Various Linux-internal data structures created from the
+ * MP-table.
+ */
+int apic_version [MAX_APICS];
+
+int pic_mode;
+unsigned long mp_lapic_addr;
+
+/* Processor that is doing the boot up */
+unsigned int boot_cpu_physical_apicid = -1U;
+unsigned int boot_cpu_logical_apicid = -1U;
+
+/* Bitmask of physically existing CPUs */
+physid_mask_t phys_cpu_present_map;
+
+unsigned int __initdata maxcpus = NR_CPUS;
+
+/*
+ * The Visual Workstation is Intel MP compliant in the hardware
+ * sense, but it doesn't have a BIOS(-configuration table).
+ * No problem for Linux.
+ */
+
+static void __init MP_processor_info (struct mpc_config_processor *m)
+{
+ 	int ver, logical_apicid;
+	physid_mask_t apic_cpus;
+ 	
+	if (!(m->mpc_cpuflag & CPU_ENABLED))
+		return;
+
+	logical_apicid = m->mpc_apicid;
+	printk(KERN_INFO "%sCPU #%d %ld:%ld APIC version %d\n",
+		m->mpc_cpuflag & CPU_BOOTPROCESSOR ? "Bootup " : "",
+		m->mpc_apicid,
+		(m->mpc_cpufeature & CPU_FAMILY_MASK) >> 8,
+		(m->mpc_cpufeature & CPU_MODEL_MASK) >> 4,
+		m->mpc_apicver);
+
+	if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) {
+		boot_cpu_physical_apicid = m->mpc_apicid;
+		boot_cpu_logical_apicid = logical_apicid;
+	}
+
+	ver = m->mpc_apicver;
+	if ((ver >= 0x14 && m->mpc_apicid >= 0xff) || m->mpc_apicid >= 0xf) {
+		printk(KERN_ERR "Processor #%d INVALID. (Max ID: %d).\n",
+			m->mpc_apicid, MAX_APICS);
+		return;
+	}
+
+	apic_cpus = apicid_to_cpu_present(m->mpc_apicid);
+	physids_or(phys_cpu_present_map, phys_cpu_present_map, apic_cpus);
+	/*
+	 * Validate version
+	 */
+	if (ver == 0x0) {
+		printk(KERN_ERR "BIOS bug, APIC version is 0 for CPU#%d! "
+			"fixing up to 0x10. (tell your hw vendor)\n",
+			m->mpc_apicid);
+		ver = 0x10;
+	}
+	apic_version[m->mpc_apicid] = ver;
+}
+
+void __init find_smp_config(void)
+{
+	struct mpc_config_processor *mp = phys_to_virt(CO_CPU_TAB_PHYS);
+	unsigned short ncpus = readw(phys_to_virt(CO_CPU_NUM_PHYS));
+
+	if (ncpus > CO_CPU_MAX) {
+		printk(KERN_WARNING "find_visws_smp: got cpu count of %d at %p\n",
+			ncpus, mp);
+
+		ncpus = CO_CPU_MAX;
+	}
+
+	if (ncpus > maxcpus)
+		ncpus = maxcpus;
+
+	smp_found_config = 1;
+	while (ncpus--)
+		MP_processor_info(mp++);
+
+	mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
+}
+
+void __init get_smp_config (void)
+{
+}