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>
43 #include <mach_mpparse.h>
49 static volatile unsigned long *psai = NULL;
50 static struct mip_reg *mip_reg;
51 static struct mip_reg *host_reg;
53 static unsigned long mip_addr, host_addr;
56 * GSI override for ES7000 platforms.
59 static unsigned int base;
62 es7000_rename_gsi(int ioapic, int gsi)
64 if (es7000_plat == ES7000_ZORRO)
69 for (i = 0; i < nr_ioapics; i++)
70 base += nr_ioapic_registers[i];
73 if (!ioapic && (gsi < 16))
82 * Determine the generation of the ES7000 currently running.
84 * es7000_plat = 1 if the machine is a 5xx ES7000 box
85 * es7000_plat = 2 if the machine is a x86_64 ES7000 box
88 if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2))
89 es7000_plat = ES7000_ZORRO;
91 es7000_plat = ES7000_CLASSIC;
92 ioapic_renumber_irq = es7000_rename_gsi;
100 parse_unisys_oem (char *oemptr)
104 unsigned char type, size;
107 struct psai *psaip = NULL;
108 struct mip_reg_info *mi;
109 struct mip_reg *host, *mip;
115 for (i=0; i <= 6; i++) {
121 mi = (struct mip_reg_info *)tp;
122 val = MIP_RD_LO(mi->host_reg);
124 host = (struct mip_reg *)val;
125 host_reg = __va(host);
126 val = MIP_RD_LO(mi->mip_reg);
127 mip_port = MIP_PORT(mi->mip_info);
129 mip = (struct mip_reg *)val;
131 Dprintk("es7000_mipcfg: host_reg = 0x%lx \n",
132 (unsigned long)host_reg);
133 Dprintk("es7000_mipcfg: mip_reg = 0x%lx \n",
134 (unsigned long)mip_reg);
138 psaip = (struct psai *)tp;
141 psai = __va(psaip->addr);
154 es7000_plat = NON_UNISYS;
162 find_unisys_acpi_oem_table(unsigned long *oem_addr)
164 struct acpi_table_header *header = NULL;
166 while (ACPI_SUCCESS(acpi_get_table("OEM1", i++, &header))) {
167 if (!memcmp((char *) &header->oem_id, "UNISYS", 6)) {
168 struct oem_table *t = (struct oem_table *)header;
169 *oem_addr = (unsigned long)__acpi_map_table(t->OEMTableAddr,
179 * This file also gets compiled if CONFIG_X86_GENERICARCH is set. Generic
180 * arch already has got following function definitions (asm-generic/es7000.c)
181 * hence no need to define these for that case.
183 #ifndef CONFIG_X86_GENERICARCH
184 void es7000_sw_apic(void);
185 void __init enable_apic_mode(void)
191 __init int mps_oem_check(struct mp_config_table *mpc, char *oem,
194 if (mpc->mpc_oemptr) {
195 struct mp_config_oemtable *oem_table =
196 (struct mp_config_oemtable *)mpc->mpc_oemptr;
197 if (!strncmp(oem, "UNISYS", 6))
198 return parse_unisys_oem((char *)oem_table);
203 /* Hook from generic ACPI tables.c */
204 int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
206 unsigned long oem_addr;
207 if (!find_unisys_acpi_oem_table(&oem_addr)) {
208 if (es7000_check_dsdt())
209 return parse_unisys_oem((char *)oem_addr);
218 int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
223 #endif /* COFIG_X86_GENERICARCH */
235 es7000_mip_write(struct mip_reg *mip_reg)
241 while (((unsigned long long)host_reg->off_38 &
242 (unsigned long long)MIP_VALID) != 0) {
244 printk("es7000_mip_write: Timeout waiting for Host Valid Flag");
247 es7000_spin(MIP_SPIN);
250 memcpy(host_reg, mip_reg, sizeof(struct mip_reg));
255 while (((unsigned long long)mip_reg->off_38 &
256 (unsigned long long)MIP_VALID) == 0) {
258 printk("es7000_mip_write: Timeout waiting for MIP Valid Flag");
261 es7000_spin(MIP_SPIN);
264 status = ((unsigned long long)mip_reg->off_0 &
265 (unsigned long long)0xffff0000000000ULL) >> 48;
266 mip_reg->off_38 = ((unsigned long long)mip_reg->off_38 &
267 (unsigned long long)~MIP_VALID);
272 es7000_start_cpu(int cpu, unsigned long eip)
274 unsigned long vect = 0, psaival = 0;
279 vect = ((unsigned long)__pa(eip)/0x1000) << 16;
280 psaival = (0x1000000 | vect | cpu);
282 while (*psai & 0x1000000)
296 struct mip_reg es7000_mip_reg;
298 printk("ES7000: Enabling APIC mode.\n");
299 memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
300 es7000_mip_reg.off_0 = MIP_SW_APIC;
301 es7000_mip_reg.off_38 = (MIP_VALID);
302 while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0)
303 printk("es7000_sw_apic: command failed, status = %x\n",