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/atomic.h>
42 #include <asm/apicdef.h>
43 #include <mach_mpparse.h>
44 #include <asm/genapic.h>
45 #include <asm/setup.h>
52 #define ES7000_CLASSIC 1
53 #define ES7000_ZORRO 2
57 #define MIP_PSAI_REG 4
60 #define MIP_SPIN 0xf0000
61 #define MIP_VALID 0x0100000000000000ULL
62 #define MIP_PORT(VALUE) ((VALUE >> 32) & 0xffff)
64 #define MIP_RD_LO(VALUE) (VALUE & 0xffffffff)
67 unsigned long long mip_info;
68 unsigned long long delivery_info;
69 unsigned long long host_reg;
70 unsigned long long mip_reg;
76 unsigned char part_id;
77 unsigned char apic_mode;
85 unsigned long long entry_type;
86 unsigned long long addr;
87 unsigned long long bep_addr;
90 struct es7000_mem_info {
93 unsigned char resv[6];
94 unsigned long long start;
95 unsigned long long size;
98 struct es7000_oem_table {
99 unsigned long long hdr;
100 struct mip_reg_info mip;
101 struct part_info pif;
102 struct es7000_mem_info shm;
109 struct acpi_table_header Header;
114 extern int find_unisys_acpi_oem_table(unsigned long *oem_addr);
115 extern void unmap_unisys_acpi_oem_table(unsigned long oem_addr);
119 unsigned long long off_0;
120 unsigned long long off_8;
121 unsigned long long off_10;
122 unsigned long long off_18;
123 unsigned long long off_20;
124 unsigned long long off_28;
125 unsigned long long off_30;
126 unsigned long long off_38;
129 #define MIP_SW_APIC 0x1020b
130 #define MIP_FUNC(VALUE) (VALUE & 0xff)
136 static volatile unsigned long *psai = NULL;
137 static struct mip_reg *mip_reg;
138 static struct mip_reg *host_reg;
140 static unsigned long mip_addr, host_addr;
145 * GSI override for ES7000 platforms.
148 static unsigned int base;
151 es7000_rename_gsi(int ioapic, int gsi)
153 if (es7000_plat == ES7000_ZORRO)
158 for (i = 0; i < nr_ioapics; i++)
159 base += nr_ioapic_registers[i];
162 if (!ioapic && (gsi < 16))
167 static int wakeup_secondary_cpu_via_mip(int cpu, unsigned long eip)
169 unsigned long vect = 0, psaival = 0;
174 vect = ((unsigned long)__pa(eip)/0x1000) << 16;
175 psaival = (0x1000000 | vect | cpu);
177 while (*psai & 0x1000000)
185 static void noop_wait_for_deassert(atomic_t *deassert_not_used)
189 static int __init es7000_update_genapic(void)
191 genapic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
194 if (boot_cpu_data.x86 == 6 &&
195 (boot_cpu_data.x86_model >= 7 || boot_cpu_data.x86_model <= 11)) {
196 es7000_update_genapic_to_cluster();
197 genapic->wait_for_init_deassert = noop_wait_for_deassert;
198 genapic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
208 * Determine the generation of the ES7000 currently running.
210 * es7000_plat = 1 if the machine is a 5xx ES7000 box
211 * es7000_plat = 2 if the machine is a x86_64 ES7000 box
214 if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2))
215 es7000_plat = ES7000_ZORRO;
217 es7000_plat = ES7000_CLASSIC;
218 ioapic_renumber_irq = es7000_rename_gsi;
220 x86_quirks->update_genapic = es7000_update_genapic;
224 * Parse the OEM Table
228 parse_unisys_oem (char *oemptr)
232 unsigned char type, size;
235 struct psai *psaip = NULL;
236 struct mip_reg_info *mi;
237 struct mip_reg *host, *mip;
243 for (i=0; i <= 6; i++) {
249 mi = (struct mip_reg_info *)tp;
250 val = MIP_RD_LO(mi->host_reg);
252 host = (struct mip_reg *)val;
253 host_reg = __va(host);
254 val = MIP_RD_LO(mi->mip_reg);
255 mip_port = MIP_PORT(mi->mip_info);
257 mip = (struct mip_reg *)val;
259 pr_debug("es7000_mipcfg: host_reg = 0x%lx \n",
260 (unsigned long)host_reg);
261 pr_debug("es7000_mipcfg: mip_reg = 0x%lx \n",
262 (unsigned long)mip_reg);
266 psaip = (struct psai *)tp;
269 psai = __va(psaip->addr);
282 es7000_plat = NON_UNISYS;
289 static unsigned long oem_addrX;
290 static unsigned long oem_size;
291 int __init find_unisys_acpi_oem_table(unsigned long *oem_addr)
293 struct acpi_table_header *header = NULL;
296 while (ACPI_SUCCESS(acpi_get_table("OEM1", i++, &header))) {
297 if (!memcmp((char *) &header->oem_id, "UNISYS", 6)) {
298 struct oem_table *t = (struct oem_table *)header;
300 oem_addrX = t->OEMTableAddr;
301 oem_size = t->OEMTableSize;
303 *oem_addr = (unsigned long)__acpi_map_table(oem_addrX,
311 void __init unmap_unisys_acpi_oem_table(unsigned long oem_addr)
326 es7000_mip_write(struct mip_reg *mip_reg)
332 while (((unsigned long long)host_reg->off_38 &
333 (unsigned long long)MIP_VALID) != 0) {
335 printk("es7000_mip_write: Timeout waiting for Host Valid Flag");
338 es7000_spin(MIP_SPIN);
341 memcpy(host_reg, mip_reg, sizeof(struct mip_reg));
346 while (((unsigned long long)mip_reg->off_38 &
347 (unsigned long long)MIP_VALID) == 0) {
349 printk("es7000_mip_write: Timeout waiting for MIP Valid Flag");
352 es7000_spin(MIP_SPIN);
355 status = ((unsigned long long)mip_reg->off_0 &
356 (unsigned long long)0xffff0000000000ULL) >> 48;
357 mip_reg->off_38 = ((unsigned long long)mip_reg->off_38 &
358 (unsigned long long)~MIP_VALID);
367 struct mip_reg es7000_mip_reg;
369 printk("ES7000: Enabling APIC mode.\n");
370 memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
371 es7000_mip_reg.off_0 = MIP_SW_APIC;
372 es7000_mip_reg.off_38 = (MIP_VALID);
373 while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0)
374 printk("es7000_sw_apic: command failed, status = %x\n",