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",