2 * Written by: Garry Forsgren, Unisys Corporation
3 * Natalie Protasevich, Unisys Corporation
4 * This file contains the code to configure and interface
5 * with Unisys ES7000 series hardware system manager.
7 * Copyright (c) 2003 Unisys Corporation. All Rights Reserved.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of version 2 of the GNU General Public License as
11 * published by the Free Software Foundation.
13 * This program is distributed in the hope that it would be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write the Free Software Foundation, Inc., 59
19 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
21 * Contact information: Unisys Corporation, Township Line & Union Meeting
22 * Roads-A, Unisys Way, Blue Bell, Pennsylvania, 19424, or:
24 * http://www.unisys.com
27 #include <linux/module.h>
28 #include <linux/types.h>
29 #include <linux/kernel.h>
30 #include <linux/smp.h>
31 #include <linux/string.h>
32 #include <linux/spinlock.h>
33 #include <linux/errno.h>
34 #include <linux/notifier.h>
35 #include <linux/reboot.h>
36 #include <linux/init.h>
37 #include <linux/acpi.h>
41 #include <asm/apicdef.h>
48 volatile unsigned long *psai = NULL;
49 struct mip_reg *mip_reg;
50 struct mip_reg *host_reg;
52 unsigned long mip_addr, host_addr;
59 parse_unisys_oem (char *oemptr, int oem_entries)
63 unsigned char type, size;
66 struct psai *psaip = NULL;
67 struct mip_reg_info *mi;
68 struct mip_reg *host, *mip;
74 for (i=0; i <= oem_entries; i++) {
80 mi = (struct mip_reg_info *)tp;
81 val = MIP_RD_LO(mi->host_reg);
83 host = (struct mip_reg *)val;
84 host_reg = __va(host);
85 val = MIP_RD_LO(mi->mip_reg);
87 mip = (struct mip_reg *)val;
89 Dprintk("es7000_mipcfg: host_reg = 0x%lx \n",
90 (unsigned long)host_reg);
91 Dprintk("es7000_mipcfg: mip_reg = 0x%lx \n",
92 (unsigned long)mip_reg);
96 psaip = (struct psai *)tp;
99 psai = __va(psaip->addr);
113 printk("\nNo ES7000 found.\n");
116 printk("\nEnabling ES7000 specific features...\n");
123 find_unisys_acpi_oem_table(unsigned long *oem_addr, int *length)
125 struct acpi_table_rsdp *rsdp = NULL;
126 unsigned long rsdp_phys = 0;
127 struct acpi_table_header *header = NULL;
129 struct acpi_table_sdt sdt;
131 rsdp_phys = acpi_find_rsdp();
132 rsdp = __va(rsdp_phys);
133 if (rsdp->rsdt_address) {
134 struct acpi_table_rsdt *mapped_rsdt = NULL;
135 sdt.pa = rsdp->rsdt_address;
137 header = (struct acpi_table_header *)
138 __acpi_map_table(sdt.pa, sizeof(struct acpi_table_header));
142 sdt.count = (header->length - sizeof(struct acpi_table_header)) >> 3;
143 mapped_rsdt = (struct acpi_table_rsdt *)
144 __acpi_map_table(sdt.pa, header->length);
148 header = &mapped_rsdt->header;
150 for (i = 0; i < sdt.count; i++)
151 sdt.entry[i].pa = (unsigned long) mapped_rsdt->entry[i];
153 for (i = 0; i < sdt.count; i++) {
155 header = (struct acpi_table_header *)
156 __acpi_map_table(sdt.entry[i].pa,
157 sizeof(struct acpi_table_header));
160 if (!strncmp((char *) &header->signature, "OEM1", 4)) {
161 if (!strncmp((char *) &header->oem_id, "UNISYS", 6)) {
164 acpi_table_print(header, sdt.entry[i].pa);
165 t = (struct oem_table *) __acpi_map_table(sdt.entry[i].pa, header->length);
166 addr = (void *) __acpi_map_table(t->OEMTableAddr, t->OEMTableSize);
167 *length = header->length;
168 *oem_addr = (unsigned long) addr;
173 printk("ES7000: did not find Unisys ACPI OEM table!\n");
187 es7000_mip_write(struct mip_reg *mip_reg)
193 while (((unsigned long long)host_reg->off_38 &
194 (unsigned long long)MIP_VALID) != 0) {
196 printk("es7000_mip_write: Timeout waiting for Host Valid Flag");
199 es7000_spin(MIP_SPIN);
202 memcpy(host_reg, mip_reg, sizeof(struct mip_reg));
207 while (((unsigned long long)mip_reg->off_38 &
208 (unsigned long long)MIP_VALID) == 0) {
210 printk("es7000_mip_write: Timeout waiting for MIP Valid Flag");
213 es7000_spin(MIP_SPIN);
216 status = ((unsigned long long)mip_reg->off_0 &
217 (unsigned long long)0xffff0000000000) >> 48;
218 mip_reg->off_38 = ((unsigned long long)mip_reg->off_38 &
219 (unsigned long long)~MIP_VALID);
224 es7000_start_cpu(int cpu, unsigned long eip)
226 unsigned long vect = 0, psaival = 0;
231 vect = ((unsigned long)__pa(eip)/0x1000) << 16;
232 psaival = (0x1000000 | vect | cpu);
234 while (*psai & 0x1000000)
244 es7000_stop_cpu(int cpu)
251 startup= (0x1000000 | cpu);
253 while ((*psai & 0xff00ffff) != startup)
256 startup = (*psai & 0xff0000) >> 16;
268 struct mip_reg es7000_mip_reg;
270 printk("ES7000: Enabling APIC mode.\n");
271 memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
272 es7000_mip_reg.off_0 = MIP_SW_APIC;
273 es7000_mip_reg.off_38 = (MIP_VALID);
274 while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0)
275 printk("es7000_sw_apic: command failed, status = %x\n",