i386: move mach-es7000

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 327 insertions, 0 deletions

diff --git a/arch/x86/mach-es7000/es7000plat.c b/arch/x86/mach-es7000/es7000plat.c
new file mode 100644
index 00000000000..ab99072d3f9
--- /dev/null
+++ b/arch/x86/mach-es7000/es7000plat.c
@@ -0,0 +1,327 @@
+/*
+ * Written by: Garry Forsgren, Unisys Corporation
+ *             Natalie Protasevich, Unisys Corporation
+ * This file contains the code to configure and interface
+ * with Unisys ES7000 series hardware system manager.
+ *
+ * Copyright (c) 2003 Unisys Corporation.  All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Unisys Corporation, Township Line & Union Meeting
+ * Roads-A, Unisys Way, Blue Bell, Pennsylvania, 19424, or:
+ *
+ * http://www.unisys.com
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/smp.h>
+#include <linux/string.h>
+#include <linux/spinlock.h>
+#include <linux/errno.h>
+#include <linux/notifier.h>
+#include <linux/reboot.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <asm/io.h>
+#include <asm/nmi.h>
+#include <asm/smp.h>
+#include <asm/apicdef.h>
+#include "es7000.h"
+#include <mach_mpparse.h>
+
+/*
+ * ES7000 Globals
+ */
+
+volatile unsigned long	*psai = NULL;
+struct mip_reg		*mip_reg;
+struct mip_reg		*host_reg;
+int 			mip_port;
+unsigned long		mip_addr, host_addr;
+
+/*
+ * GSI override for ES7000 platforms.
+ */
+
+static unsigned int base;
+
+static int
+es7000_rename_gsi(int ioapic, int gsi)
+{
+	if (es7000_plat == ES7000_ZORRO)
+		return gsi;
+
+	if (!base) {
+		int i;
+		for (i = 0; i < nr_ioapics; i++)
+			base += nr_ioapic_registers[i];
+	}
+
+	if (!ioapic && (gsi < 16)) 
+		gsi += base;
+	return gsi;
+}
+
+void __init
+setup_unisys(void)
+{
+	/*
+	 * Determine the generation of the ES7000 currently running.
+	 *
+	 * es7000_plat = 1 if the machine is a 5xx ES7000 box
+	 * es7000_plat = 2 if the machine is a x86_64 ES7000 box
+	 *
+	 */
+	if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2))
+		es7000_plat = ES7000_ZORRO;
+	else
+		es7000_plat = ES7000_CLASSIC;
+	ioapic_renumber_irq = es7000_rename_gsi;
+}
+
+/*
+ * Parse the OEM Table
+ */
+
+int __init
+parse_unisys_oem (char *oemptr)
+{
+	int                     i;
+	int 			success = 0;
+	unsigned char           type, size;
+	unsigned long           val;
+	char                    *tp = NULL;
+	struct psai             *psaip = NULL;
+	struct mip_reg_info 	*mi;
+	struct mip_reg		*host, *mip;
+
+	tp = oemptr;
+
+	tp += 8;
+
+	for (i=0; i <= 6; i++) {
+		type = *tp++;
+		size = *tp++;
+		tp -= 2;
+		switch (type) {
+		case MIP_REG:
+			mi = (struct mip_reg_info *)tp;
+			val = MIP_RD_LO(mi->host_reg);
+			host_addr = val;
+			host = (struct mip_reg *)val;
+			host_reg = __va(host);
+			val = MIP_RD_LO(mi->mip_reg);
+			mip_port = MIP_PORT(mi->mip_info);
+			mip_addr = val;
+			mip = (struct mip_reg *)val;
+			mip_reg = __va(mip);
+			Dprintk("es7000_mipcfg: host_reg = 0x%lx \n",
+				(unsigned long)host_reg);
+			Dprintk("es7000_mipcfg: mip_reg = 0x%lx \n",
+				(unsigned long)mip_reg);
+			success++;
+			break;
+		case MIP_PSAI_REG:
+			psaip = (struct psai *)tp;
+			if (tp != NULL) {
+				if (psaip->addr)
+					psai = __va(psaip->addr);
+				else
+					psai = NULL;
+				success++;
+			}
+			break;
+		default:
+			break;
+		}
+		tp += size;
+	}
+
+	if (success < 2) {
+		es7000_plat = NON_UNISYS;
+	} else
+		setup_unisys();
+	return es7000_plat;
+}
+
+#ifdef CONFIG_ACPI
+int __init
+find_unisys_acpi_oem_table(unsigned long *oem_addr)
+{
+	struct acpi_table_header *header = NULL;
+	int i = 0;
+	while (ACPI_SUCCESS(acpi_get_table("OEM1", i++, &header))) {
+		if (!memcmp((char *) &header->oem_id, "UNISYS", 6)) {
+			struct oem_table *t = (struct oem_table *)header;
+			*oem_addr = (unsigned long)__acpi_map_table(t->OEMTableAddr,
+								    t->OEMTableSize);
+			return 0;
+		}
+	}
+	return -1;
+}
+#endif
+
+/*
+ * This file also gets compiled if CONFIG_X86_GENERICARCH is set. Generic
+ * arch already has got following function definitions (asm-generic/es7000.c)
+ * hence no need to define these for that case.
+ */
+#ifndef CONFIG_X86_GENERICARCH
+void es7000_sw_apic(void);
+void __init enable_apic_mode(void)
+{
+	es7000_sw_apic();
+	return;
+}
+
+__init int mps_oem_check(struct mp_config_table *mpc, char *oem,
+		char *productid)
+{
+	if (mpc->mpc_oemptr) {
+		struct mp_config_oemtable *oem_table =
+			(struct mp_config_oemtable *)mpc->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 */
+int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	unsigned long oem_addr;
+	if (!find_unisys_acpi_oem_table(&oem_addr)) {
+		if (es7000_check_dsdt())
+			return parse_unisys_oem((char *)oem_addr);
+		else {
+			setup_unisys();
+			return 1;
+		}
+	}
+	return 0;
+}
+#else
+int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	return 0;
+}
+#endif
+#endif /* COFIG_X86_GENERICARCH */
+
+static void
+es7000_spin(int n)
+{
+	int i = 0;
+
+	while (i++ < n)
+		rep_nop();
+}
+
+static int __init
+es7000_mip_write(struct mip_reg *mip_reg)
+{
+	int			status = 0;
+	int			spin;
+
+	spin = MIP_SPIN;
+	while (((unsigned long long)host_reg->off_38 &
+		(unsigned long long)MIP_VALID) != 0) {
+			if (--spin <= 0) {
+				printk("es7000_mip_write: Timeout waiting for Host Valid Flag");
+				return -1;
+			}
+		es7000_spin(MIP_SPIN);
+	}
+
+	memcpy(host_reg, mip_reg, sizeof(struct mip_reg));
+	outb(1, mip_port);
+
+	spin = MIP_SPIN;
+
+	while (((unsigned long long)mip_reg->off_38 &
+		(unsigned long long)MIP_VALID) == 0) {
+		if (--spin <= 0) {
+			printk("es7000_mip_write: Timeout waiting for MIP Valid Flag");
+			return -1;
+		}
+		es7000_spin(MIP_SPIN);
+	}
+
+	status = ((unsigned long long)mip_reg->off_0 &
+		(unsigned long long)0xffff0000000000ULL) >> 48;
+	mip_reg->off_38 = ((unsigned long long)mip_reg->off_38 &
+		(unsigned long long)~MIP_VALID);
+	return status;
+}
+
+int
+es7000_start_cpu(int cpu, unsigned long eip)
+{
+	unsigned long vect = 0, psaival = 0;
+
+	if (psai == NULL)
+		return -1;
+
+	vect = ((unsigned long)__pa(eip)/0x1000) << 16;
+	psaival = (0x1000000 | vect | cpu);
+
+	while (*psai & 0x1000000)
+                ;
+
+	*psai = psaival;
+
+	return 0;
+
+}
+
+int
+es7000_stop_cpu(int cpu)
+{
+	int startup;
+
+	if (psai == NULL)
+		return -1;
+
+	startup= (0x1000000 | cpu);
+
+	while ((*psai & 0xff00ffff) != startup)
+		;
+
+	startup = (*psai & 0xff0000) >> 16;
+	*psai &= 0xffffff;
+
+	return 0;
+
+}
+
+void __init
+es7000_sw_apic()
+{
+	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);
+		return;
+	}
+}