Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 316 insertions, 0 deletions

diff --git a/arch/i386/mach-es7000/es7000plat.c b/arch/i386/mach-es7000/es7000plat.c
new file mode 100644
index 00000000000..d5936d50047
--- /dev/null
+++ b/arch/i386/mach-es7000/es7000plat.c
@@ -0,0 +1,316 @@
+/*
+ * 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"
+
+/*
+ * 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;
+
+#if defined(CONFIG_X86_IO_APIC) && (defined(CONFIG_ACPI_INTERPRETER) || defined(CONFIG_ACPI_BOOT))
+
+/*
+ * GSI override for ES7000 platforms.
+ */
+
+static unsigned int base;
+
+static int
+es7000_rename_gsi(int ioapic, int 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;
+}
+
+#endif // (CONFIG_X86_IO_APIC) && (CONFIG_ACPI_INTERPRETER || CONFIG_ACPI_BOOT)
+
+/*
+ * Parse the OEM Table
+ */
+
+int __init
+parse_unisys_oem (char *oemptr, int oem_entries)
+{
+	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 <= oem_entries; 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;
+		}
+		if (i == 6) break;
+		tp += size;
+	}
+
+	if (success < 2) {
+		es7000_plat = 0;
+	} else {
+		printk("\nEnabling ES7000 specific features...\n");
+		/*
+		 * Determine the generation of the ES7000 currently running.
+		 *
+		 * es7000_plat = 0 if the machine is NOT a Unisys ES7000 box
+		 * 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 = 2;
+		else
+			es7000_plat = 1;
+
+		ioapic_renumber_irq = es7000_rename_gsi;
+	}
+	return es7000_plat;
+}
+
+int __init
+find_unisys_acpi_oem_table(unsigned long *oem_addr, int *length)
+{
+	struct acpi_table_rsdp		*rsdp = NULL;
+	unsigned long			rsdp_phys = 0;
+	struct acpi_table_header 	*header = NULL;
+	int				i;
+	struct acpi_table_sdt		sdt;
+
+	rsdp_phys = acpi_find_rsdp();
+	rsdp = __va(rsdp_phys);
+	if (rsdp->rsdt_address) {
+		struct acpi_table_rsdt	*mapped_rsdt = NULL;
+		sdt.pa = rsdp->rsdt_address;
+
+		header = (struct acpi_table_header *)
+			__acpi_map_table(sdt.pa, sizeof(struct acpi_table_header));
+		if (!header)
+			return -ENODEV;
+
+		sdt.count = (header->length - sizeof(struct acpi_table_header)) >> 3;
+		mapped_rsdt = (struct acpi_table_rsdt *)
+			__acpi_map_table(sdt.pa, header->length);
+		if (!mapped_rsdt)
+			return -ENODEV;
+
+		header = &mapped_rsdt->header;
+
+		for (i = 0; i < sdt.count; i++)
+			sdt.entry[i].pa = (unsigned long) mapped_rsdt->entry[i];
+	};
+	for (i = 0; i < sdt.count; i++) {
+
+		header = (struct acpi_table_header *)
+			__acpi_map_table(sdt.entry[i].pa,
+				sizeof(struct acpi_table_header));
+		if (!header)
+			continue;
+		if (!strncmp((char *) &header->signature, "OEM1", 4)) {
+			if (!strncmp((char *) &header->oem_id, "UNISYS", 6)) {
+				void *addr;
+				struct oem_table *t;
+				acpi_table_print(header, sdt.entry[i].pa);
+				t = (struct oem_table *) __acpi_map_table(sdt.entry[i].pa, header->length);
+				addr = (void *) __acpi_map_table(t->OEMTableAddr, t->OEMTableSize);
+				*length = header->length;
+				*oem_addr = (unsigned long) addr;
+				return 0;
+			}
+		}
+	}
+	Dprintk("ES7000: did not find Unisys ACPI OEM table!\n");
+	return -1;
+}
+
+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;
+	}
+}