~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/m68k/sun3/prom/console.c

Version: ~ [ linux-5.5-rc7 ] ~ [ linux-5.4.13 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.97 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.166 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.210 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.210 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.81 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * console.c: Routines that deal with sending and receiving IO
  3  *            to/from the current console device using the PROM.
  4  *
  5  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
  6  */
  7 
  8 #include <linux/types.h>
  9 #include <linux/kernel.h>
 10 #include <linux/sched.h>
 11 #include <asm/openprom.h>
 12 #include <asm/oplib.h>
 13 #include <linux/string.h>
 14 
 15 /* Non blocking get character from console input device, returns -1
 16  * if no input was taken.  This can be used for polling.
 17  */
 18 int
 19 prom_nbgetchar(void)
 20 {
 21         int i = -1;
 22         unsigned long flags;
 23 
 24         local_irq_save(flags);
 25                 i = (*(romvec->pv_nbgetchar))();
 26         local_irq_restore(flags);
 27         return i; /* Ugh, we could spin forever on unsupported proms ;( */
 28 }
 29 
 30 /* Non blocking put character to console device, returns -1 if
 31  * unsuccessful.
 32  */
 33 int
 34 prom_nbputchar(char c)
 35 {
 36         unsigned long flags;
 37         int i = -1;
 38 
 39         local_irq_save(flags);
 40                 i = (*(romvec->pv_nbputchar))(c);
 41         local_irq_restore(flags);
 42         return i; /* Ugh, we could spin forever on unsupported proms ;( */
 43 }
 44 
 45 /* Blocking version of get character routine above. */
 46 char
 47 prom_getchar(void)
 48 {
 49         int character;
 50         while((character = prom_nbgetchar()) == -1) ;
 51         return (char) character;
 52 }
 53 
 54 /* Blocking version of put character routine above. */
 55 void
 56 prom_putchar(char c)
 57 {
 58         while(prom_nbputchar(c) == -1) ;
 59         return;
 60 }
 61 
 62 /* Query for input device type */
 63 #if 0
 64 enum prom_input_device
 65 prom_query_input_device()
 66 {
 67         unsigned long flags;
 68         int st_p;
 69         char propb[64];
 70         char *p;
 71 
 72         switch(prom_vers) {
 73         case PROM_V0:
 74         case PROM_V2:
 75         default:
 76                 switch(*romvec->pv_stdin) {
 77                 case PROMDEV_KBD:       return PROMDEV_IKBD;
 78                 case PROMDEV_TTYA:      return PROMDEV_ITTYA;
 79                 case PROMDEV_TTYB:      return PROMDEV_ITTYB;
 80                 default:
 81                         return PROMDEV_I_UNK;
 82                 };
 83         case PROM_V3:
 84         case PROM_P1275:
 85                 local_irq_save(flags);
 86                 st_p = (*romvec->pv_v2devops.v2_inst2pkg)(*romvec->pv_v2bootargs.fd_stdin);
 87                 __asm__ __volatile__("ld [%0], %%g6\n\t" : :
 88                                      "r" (&current_set[smp_processor_id()]) :
 89                                      "memory");
 90                 local_irq_restore(flags);
 91                 if(prom_node_has_property(st_p, "keyboard"))
 92                         return PROMDEV_IKBD;
 93                 prom_getproperty(st_p, "device_type", propb, sizeof(propb));
 94                 if(strncmp(propb, "serial", sizeof("serial")))
 95                         return PROMDEV_I_UNK;
 96                 prom_getproperty(prom_root_node, "stdin-path", propb, sizeof(propb));
 97                 p = propb;
 98                 while(*p) p++; p -= 2;
 99                 if(p[0] == ':') {
100                         if(p[1] == 'a')
101                                 return PROMDEV_ITTYA;
102                         else if(p[1] == 'b')
103                                 return PROMDEV_ITTYB;
104                 }
105                 return PROMDEV_I_UNK;
106         };
107 }
108 #endif
109 
110 /* Query for output device type */
111 
112 #if 0
113 enum prom_output_device
114 prom_query_output_device()
115 {
116         unsigned long flags;
117         int st_p;
118         char propb[64];
119         char *p;
120         int propl;
121 
122         switch(prom_vers) {
123         case PROM_V0:
124                 switch(*romvec->pv_stdin) {
125                 case PROMDEV_SCREEN:    return PROMDEV_OSCREEN;
126                 case PROMDEV_TTYA:      return PROMDEV_OTTYA;
127                 case PROMDEV_TTYB:      return PROMDEV_OTTYB;
128                 };
129                 break;
130         case PROM_V2:
131         case PROM_V3:
132         case PROM_P1275:
133                 local_irq_save(flags);
134                 st_p = (*romvec->pv_v2devops.v2_inst2pkg)(*romvec->pv_v2bootargs.fd_stdout);
135                 __asm__ __volatile__("ld [%0], %%g6\n\t" : :
136                                      "r" (&current_set[smp_processor_id()]) :
137                                      "memory");
138                 local_irq_restore(flags);
139                 propl = prom_getproperty(st_p, "device_type", propb, sizeof(propb));
140                 if (propl >= 0 && propl == sizeof("display") &&
141                         strncmp("display", propb, sizeof("display")) == 0)
142                 {
143                         return PROMDEV_OSCREEN;
144                 }
145                 if(prom_vers == PROM_V3) {
146                         if(strncmp("serial", propb, sizeof("serial")))
147                                 return PROMDEV_O_UNK;
148                         prom_getproperty(prom_root_node, "stdout-path", propb, sizeof(propb));
149                         p = propb;
150                         while(*p) p++; p -= 2;
151                         if(p[0]==':') {
152                                 if(p[1] == 'a')
153                                         return PROMDEV_OTTYA;
154                                 else if(p[1] == 'b')
155                                         return PROMDEV_OTTYB;
156                         }
157                         return PROMDEV_O_UNK;
158                 } else {
159                         /* This works on SS-2 (an early OpenFirmware) still. */
160                         switch(*romvec->pv_stdin) {
161                         case PROMDEV_TTYA:      return PROMDEV_OTTYA;
162                         case PROMDEV_TTYB:      return PROMDEV_OTTYB;
163                         };
164                 }
165                 break;
166         };
167         return PROMDEV_O_UNK;
168 }
169 #endif
170 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp