1 // SPDX-License-Identifier: GPL-2.0 <<
2 /* 1 /*
3 * linux/arch/mips/sni/process.c 2 * linux/arch/mips/sni/process.c
4 * 3 *
5 * Reset a SNI machine. 4 * Reset a SNI machine.
6 */ 5 */
7 #include <linux/delay.h> <<
8 <<
9 #include <asm/io.h> 6 #include <asm/io.h>
10 #include <asm/reboot.h> 7 #include <asm/reboot.h>
>> 8 #include <asm/system.h>
11 #include <asm/sni.h> 9 #include <asm/sni.h>
12 10
13 /* 11 /*
14 * This routine reboots the machine by asking 12 * This routine reboots the machine by asking the keyboard
15 * controller to pulse the reset-line low. We 13 * controller to pulse the reset-line low. We try that for a while,
16 * and if it doesn't work, we do some other st 14 * and if it doesn't work, we do some other stupid things.
17 */ 15 */
18 static inline void kb_wait(void) !! 16 static inline void
>> 17 kb_wait(void)
19 { 18 {
20 int i; 19 int i;
21 20
22 for (i = 0; i < 0x10000; i++) !! 21 for (i=0; i<0x10000; i++)
23 if ((inb_p(0x64) & 0x02) == 0) 22 if ((inb_p(0x64) & 0x02) == 0)
24 break; 23 break;
25 } 24 }
26 25
27 /* XXX This ends up at the ARC firmware prompt 26 /* XXX This ends up at the ARC firmware prompt ... */
28 void sni_machine_restart(char *command) 27 void sni_machine_restart(char *command)
29 { 28 {
30 int i; !! 29 int i, j;
31 30
32 /* This does a normal via the keyboard 31 /* This does a normal via the keyboard controller like a PC.
33 We can do that easier ... */ 32 We can do that easier ... */
34 local_irq_disable(); !! 33 sti();
35 for (;;) { 34 for (;;) {
36 for (i = 0; i < 100; i++) { !! 35 for (i=0; i<100; i++) {
37 kb_wait(); 36 kb_wait();
38 udelay(50); !! 37 for(j = 0; j < 100000 ; j++)
39 outb_p(0xfe, 0x64); !! 38 /* nothing */;
40 udelay(50); !! 39 outb_p(0xfe,0x64); /* pulse reset low */
41 } 40 }
42 } 41 }
>> 42 }
>> 43
>> 44 void sni_machine_halt(void)
>> 45 {
43 } 46 }
44 47
45 void sni_machine_power_off(void) 48 void sni_machine_power_off(void)
46 { 49 {
47 *(volatile unsigned char *)PCIMT_CSWCS 50 *(volatile unsigned char *)PCIMT_CSWCSM = 0xfd;
48 } 51 }
49 52
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