1 files changed, 446 insertions, 22 deletions

diff --git a/arch/x86/kernel/es7000_32.c b/arch/x86/kernel/es7000_32.c
index 71d7be624d46..55515d73d9c2 100644
--- a/arch/x86/kernel/es7000_32.c
+++ b/arch/x86/kernel/es7000_32.c
@@ -40,7 +40,6 @@
 #include <asm/smp.h>
 #include <asm/atomic.h>
 #include <asm/apicdef.h>
-#include <mach_mpparse.h>
 #include <asm/genapic.h>
 #include <asm/setup.h>
 
@@ -182,20 +181,16 @@ static int wakeup_secondary_cpu_via_mip(int cpu, unsigned long eip)
 	return 0;
 }
 
-static void noop_wait_for_deassert(atomic_t *deassert_not_used)
-{
-}
-
 static int __init es7000_update_genapic(void)
 {
-	genapic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
+	apic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
 
 	/* MPENTIUMIII */
 	if (boot_cpu_data.x86 == 6 &&
 	    (boot_cpu_data.x86_model >= 7 || boot_cpu_data.x86_model <= 11)) {
 		es7000_update_genapic_to_cluster();
-		genapic->wait_for_init_deassert = noop_wait_for_deassert;
-		genapic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
+		apic->wait_for_init_deassert = NULL;
+		apic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
 	}
 
 	return 0;
@@ -366,20 +361,449 @@ es7000_mip_write(struct mip_reg *mip_reg)
 	return status;
 }
 
-void __init
-es7000_sw_apic(void)
-{
-	if (es7000_plat) {
-		int mip_status;
-		struct mip_reg es7000_mip_reg;
-
-		printk("ES7000: Enabling APIC mode.\n");
-        	memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
-        	es7000_mip_reg.off_0 = MIP_SW_APIC;
-        	es7000_mip_reg.off_38 = (MIP_VALID);
-        	while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0)
-              		printk("es7000_sw_apic: command failed, status = %x\n",
-				mip_status);
+void __init es7000_enable_apic_mode(void)
+{
+	struct mip_reg es7000_mip_reg;
+	int mip_status;
+
+	if (!es7000_plat)
 		return;
+
+	printk("ES7000: Enabling APIC mode.\n");
+       	memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
+       	es7000_mip_reg.off_0 = MIP_SW_APIC;
+       	es7000_mip_reg.off_38 = MIP_VALID;
+
+       	while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0) {
+		printk("es7000_enable_apic_mode: command failed, status = %x\n",
+			mip_status);
+	}
+}
+
+/*
+ * APIC driver for the Unisys ES7000 chipset.
+ */
+#define APIC_DEFINITION 1
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <asm/mpspec.h>
+#include <asm/genapic.h>
+#include <asm/fixmap.h>
+#include <asm/apicdef.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/smp.h>
+#include <asm/ipi.h>
+
+#define APIC_DFR_VALUE_CLUSTER		(APIC_DFR_CLUSTER)
+#define INT_DELIVERY_MODE_CLUSTER	(dest_LowestPrio)
+#define INT_DEST_MODE_CLUSTER		(1) /* logical delivery broadcast to all procs */
+
+#define APIC_DFR_VALUE			(APIC_DFR_FLAT)
+
+extern void es7000_enable_apic_mode(void);
+extern int apic_version [MAX_APICS];
+extern u8 cpu_2_logical_apicid[];
+extern unsigned int boot_cpu_physical_apicid;
+
+extern int parse_unisys_oem (char *oemptr);
+extern int find_unisys_acpi_oem_table(unsigned long *oem_addr);
+extern void unmap_unisys_acpi_oem_table(unsigned long oem_addr);
+extern void setup_unisys(void);
+
+#define apicid_cluster(apicid)		(apicid & 0xF0)
+#define xapic_phys_to_log_apicid(cpu)	per_cpu(x86_bios_cpu_apicid, cpu)
+
+static void es7000_vector_allocation_domain(int cpu, cpumask_t *retmask)
+{
+	/* Careful. Some cpus do not strictly honor the set of cpus
+	 * specified in the interrupt destination when using lowest
+	 * priority interrupt delivery mode.
+	 *
+	 * In particular there was a hyperthreading cpu observed to
+	 * deliver interrupts to the wrong hyperthread when only one
+	 * hyperthread was specified in the interrupt desitination.
+	 */
+	*retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
+}
+
+
+static void es7000_wait_for_init_deassert(atomic_t *deassert)
+{
+#ifndef CONFIG_ES7000_CLUSTERED_APIC
+	while (!atomic_read(deassert))
+		cpu_relax();
+#endif
+	return;
+}
+
+static unsigned int es7000_get_apic_id(unsigned long x)
+{
+	return (x >> 24) & 0xFF;
+}
+
+#ifdef CONFIG_ACPI
+static int es7000_check_dsdt(void)
+{
+	struct acpi_table_header header;
+
+	if (ACPI_SUCCESS(acpi_get_table_header(ACPI_SIG_DSDT, 0, &header)) &&
+	    !strncmp(header.oem_id, "UNISYS", 6))
+		return 1;
+	return 0;
+}
+#endif
+
+static void es7000_send_IPI_mask(const struct cpumask *mask, int vector)
+{
+	default_send_IPI_mask_sequence_phys(mask, vector);
+}
+
+static void es7000_send_IPI_allbutself(int vector)
+{
+	default_send_IPI_mask_allbutself_phys(cpu_online_mask, vector);
+}
+
+static void es7000_send_IPI_all(int vector)
+{
+	es7000_send_IPI_mask(cpu_online_mask, vector);
+}
+
+static int es7000_apic_id_registered(void)
+{
+	        return 1;
+}
+
+static const cpumask_t *target_cpus_cluster(void)
+{
+	return &CPU_MASK_ALL;
+}
+
+static const cpumask_t *es7000_target_cpus(void)
+{
+	return &cpumask_of_cpu(smp_processor_id());
+}
+
+static unsigned long
+es7000_check_apicid_used(physid_mask_t bitmap, int apicid)
+{
+	return 0;
+}
+static unsigned long es7000_check_apicid_present(int bit)
+{
+	return physid_isset(bit, phys_cpu_present_map);
+}
+
+static unsigned long calculate_ldr(int cpu)
+{
+	unsigned long id = xapic_phys_to_log_apicid(cpu);
+
+	return (SET_APIC_LOGICAL_ID(id));
+}
+
+/*
+ * Set up the logical destination ID.
+ *
+ * Intel recommends to set DFR, LdR and TPR before enabling
+ * an APIC.  See e.g. "AP-388 82489DX User's Manual" (Intel
+ * document number 292116).  So here it goes...
+ */
+static void es7000_init_apic_ldr_cluster(void)
+{
+	unsigned long val;
+	int cpu = smp_processor_id();
+
+	apic_write(APIC_DFR, APIC_DFR_VALUE_CLUSTER);
+	val = calculate_ldr(cpu);
+	apic_write(APIC_LDR, val);
+}
+
+static void es7000_init_apic_ldr(void)
+{
+	unsigned long val;
+	int cpu = smp_processor_id();
+
+	apic_write(APIC_DFR, APIC_DFR_VALUE);
+	val = calculate_ldr(cpu);
+	apic_write(APIC_LDR, val);
+}
+
+static void es7000_setup_apic_routing(void)
+{
+	int apic = per_cpu(x86_bios_cpu_apicid, smp_processor_id());
+	printk("Enabling APIC mode:  %s. Using %d I/O APICs, target cpus %lx\n",
+		(apic_version[apic] == 0x14) ?
+			"Physical Cluster" : "Logical Cluster",
+			nr_ioapics, cpus_addr(*es7000_target_cpus())[0]);
+}
+
+static int es7000_apicid_to_node(int logical_apicid)
+{
+	return 0;
+}
+
+
+static int es7000_cpu_present_to_apicid(int mps_cpu)
+{
+	if (!mps_cpu)
+		return boot_cpu_physical_apicid;
+	else if (mps_cpu < nr_cpu_ids)
+		return (int) per_cpu(x86_bios_cpu_apicid, mps_cpu);
+	else
+		return BAD_APICID;
+}
+
+static physid_mask_t es7000_apicid_to_cpu_present(int phys_apicid)
+{
+	static int id = 0;
+	physid_mask_t mask;
+
+	mask = physid_mask_of_physid(id);
+	++id;
+
+	return mask;
+}
+
+/* Mapping from cpu number to logical apicid */
+static int es7000_cpu_to_logical_apicid(int cpu)
+{
+#ifdef CONFIG_SMP
+	if (cpu >= nr_cpu_ids)
+		return BAD_APICID;
+	return (int)cpu_2_logical_apicid[cpu];
+#else
+	return logical_smp_processor_id();
+#endif
+}
+
+static physid_mask_t es7000_ioapic_phys_id_map(physid_mask_t phys_map)
+{
+	/* For clustered we don't have a good way to do this yet - hack */
+	return physids_promote(0xff);
+}
+
+static int es7000_check_phys_apicid_present(int cpu_physical_apicid)
+{
+	boot_cpu_physical_apicid = read_apic_id();
+	return (1);
+}
+
+static unsigned int
+es7000_cpu_mask_to_apicid_cluster(const struct cpumask *cpumask)
+{
+	int cpus_found = 0;
+	int num_bits_set;
+	int apicid;
+	int cpu;
+
+	num_bits_set = cpumask_weight(cpumask);
+	/* Return id to all */
+	if (num_bits_set == nr_cpu_ids)
+		return 0xFF;
+	/*
+	 * The cpus in the mask must all be on the apic cluster.  If are not
+	 * on the same apicid cluster return default value of target_cpus():
+	 */
+	cpu = cpumask_first(cpumask);
+	apicid = es7000_cpu_to_logical_apicid(cpu);
+
+	while (cpus_found < num_bits_set) {
+		if (cpumask_test_cpu(cpu, cpumask)) {
+			int new_apicid = es7000_cpu_to_logical_apicid(cpu);
+
+			if (apicid_cluster(apicid) !=
+					apicid_cluster(new_apicid)) {
+				printk ("%s: Not a valid mask!\n", __func__);
+
+				return 0xFF;
+			}
+			apicid = new_apicid;
+			cpus_found++;
+		}
+		cpu++;
 	}
+	return apicid;
 }
+
+static unsigned int es7000_cpu_mask_to_apicid(const cpumask_t *cpumask)
+{
+	int cpus_found = 0;
+	int num_bits_set;
+	int apicid;
+	int cpu;
+
+	num_bits_set = cpus_weight(*cpumask);
+	/* Return id to all */
+	if (num_bits_set == nr_cpu_ids)
+		return es7000_cpu_to_logical_apicid(0);
+	/*
+	 * The cpus in the mask must all be on the apic cluster.  If are not
+	 * on the same apicid cluster return default value of target_cpus():
+	 */
+	cpu = first_cpu(*cpumask);
+	apicid = es7000_cpu_to_logical_apicid(cpu);
+	while (cpus_found < num_bits_set) {
+		if (cpu_isset(cpu, *cpumask)) {
+			int new_apicid = es7000_cpu_to_logical_apicid(cpu);
+
+			if (apicid_cluster(apicid) !=
+					apicid_cluster(new_apicid)) {
+				printk ("%s: Not a valid mask!\n", __func__);
+
+				return es7000_cpu_to_logical_apicid(0);
+			}
+			apicid = new_apicid;
+			cpus_found++;
+		}
+		cpu++;
+	}
+	return apicid;
+}
+
+static unsigned int
+es7000_cpu_mask_to_apicid_and(const struct cpumask *inmask,
+			      const struct cpumask *andmask)
+{
+	int apicid = es7000_cpu_to_logical_apicid(0);
+	cpumask_var_t cpumask;
+
+	if (!alloc_cpumask_var(&cpumask, GFP_ATOMIC))
+		return apicid;
+
+	cpumask_and(cpumask, inmask, andmask);
+	cpumask_and(cpumask, cpumask, cpu_online_mask);
+	apicid = es7000_cpu_mask_to_apicid(cpumask);
+
+	free_cpumask_var(cpumask);
+
+	return apicid;
+}
+
+static int es7000_phys_pkg_id(int cpuid_apic, int index_msb)
+{
+	return cpuid_apic >> index_msb;
+}
+
+void __init es7000_update_genapic_to_cluster(void)
+{
+	apic->target_cpus = target_cpus_cluster;
+	apic->irq_delivery_mode = INT_DELIVERY_MODE_CLUSTER;
+	apic->irq_dest_mode = INT_DEST_MODE_CLUSTER;
+
+	apic->init_apic_ldr = es7000_init_apic_ldr_cluster;
+
+	apic->cpu_mask_to_apicid = es7000_cpu_mask_to_apicid_cluster;
+}
+
+static int probe_es7000(void)
+{
+	/* probed later in mptable/ACPI hooks */
+	return 0;
+}
+
+static __init int
+es7000_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
+{
+	if (mpc->oemptr) {
+		struct mpc_oemtable *oem_table =
+			(struct mpc_oemtable *)mpc->oemptr;
+
+		if (!strncmp(oem, "UNISYS", 6))
+			return parse_unisys_oem((char *)oem_table);
+	}
+	return 0;
+}
+
+#ifdef CONFIG_ACPI
+/* Hook from generic ACPI tables.c */
+static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	unsigned long oem_addr = 0;
+	int check_dsdt;
+	int ret = 0;
+
+	/* check dsdt at first to avoid clear fix_map for oem_addr */
+	check_dsdt = es7000_check_dsdt();
+
+	if (!find_unisys_acpi_oem_table(&oem_addr)) {
+		if (check_dsdt)
+			ret = parse_unisys_oem((char *)oem_addr);
+		else {
+			setup_unisys();
+			ret = 1;
+		}
+		/*
+		 * we need to unmap it
+		 */
+		unmap_unisys_acpi_oem_table(oem_addr);
+	}
+	return ret;
+}
+#else
+static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	return 0;
+}
+#endif
+
+
+struct genapic apic_es7000 = {
+
+	.name				= "es7000",
+	.probe				= probe_es7000,
+	.acpi_madt_oem_check		= es7000_acpi_madt_oem_check,
+	.apic_id_registered		= es7000_apic_id_registered,
+
+	.irq_delivery_mode		= dest_Fixed,
+	/* phys delivery to target CPUs: */
+	.irq_dest_mode			= 0,
+
+	.target_cpus			= es7000_target_cpus,
+	.disable_esr			= 1,
+	.dest_logical			= 0,
+	.check_apicid_used		= es7000_check_apicid_used,
+	.check_apicid_present		= es7000_check_apicid_present,
+
+	.vector_allocation_domain	= es7000_vector_allocation_domain,
+	.init_apic_ldr			= es7000_init_apic_ldr,
+
+	.ioapic_phys_id_map		= es7000_ioapic_phys_id_map,
+	.setup_apic_routing		= es7000_setup_apic_routing,
+	.multi_timer_check		= NULL,
+	.apicid_to_node			= es7000_apicid_to_node,
+	.cpu_to_logical_apicid		= es7000_cpu_to_logical_apicid,
+	.cpu_present_to_apicid		= es7000_cpu_present_to_apicid,
+	.apicid_to_cpu_present		= es7000_apicid_to_cpu_present,
+	.setup_portio_remap		= NULL,
+	.check_phys_apicid_present	= es7000_check_phys_apicid_present,
+	.enable_apic_mode		= es7000_enable_apic_mode,
+	.phys_pkg_id			= es7000_phys_pkg_id,
+	.mps_oem_check			= es7000_mps_oem_check,
+
+	.get_apic_id			= es7000_get_apic_id,
+	.set_apic_id			= NULL,
+	.apic_id_mask			= 0xFF << 24,
+
+	.cpu_mask_to_apicid		= es7000_cpu_mask_to_apicid,
+	.cpu_mask_to_apicid_and		= es7000_cpu_mask_to_apicid_and,
+
+	.send_IPI_mask			= es7000_send_IPI_mask,
+	.send_IPI_mask_allbutself	= NULL,
+	.send_IPI_allbutself		= es7000_send_IPI_allbutself,
+	.send_IPI_all			= es7000_send_IPI_all,
+	.send_IPI_self			= default_send_IPI_self,
+
+	.wakeup_cpu			= NULL,
+
+	.trampoline_phys_low		= 0x467,
+	.trampoline_phys_high		= 0x469,
+
+	.wait_for_init_deassert		= es7000_wait_for_init_deassert,
+
+	/* Nothing to do for most platforms, since cleared by the INIT cycle: */
+	.smp_callin_clear_local_apic	= NULL,
+	.store_NMI_vector		= NULL,
+	.inquire_remote_apic		= default_inquire_remote_apic,
+};