Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Linus Torvalds (pre-git) | 170 | 94.97% | 14 | 77.78% |
Geert Uytterhoeven | 5 | 2.79% | 1 | 5.56% |
Adrian Bunk | 3 | 1.68% | 2 | 11.11% |
Greg Kroah-Hartman | 1 | 0.56% | 1 | 5.56% |
Total | 179 | 18 |
// SPDX-License-Identifier: GPL-2.0 /* * console.c: Routines that deal with sending and receiving IO * to/from the current console device using the PROM. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) */ #include <linux/types.h> #include <linux/kernel.h> #include <linux/sched.h> #include <asm/openprom.h> #include <asm/oplib.h> #include <linux/string.h> /* Non blocking get character from console input device, returns -1 * if no input was taken. This can be used for polling. */ int prom_nbgetchar(void) { int i = -1; unsigned long flags; local_irq_save(flags); i = (*(romvec->pv_nbgetchar))(); local_irq_restore(flags); return i; /* Ugh, we could spin forever on unsupported proms ;( */ } /* Non blocking put character to console device, returns -1 if * unsuccessful. */ int prom_nbputchar(char c) { unsigned long flags; int i = -1; local_irq_save(flags); i = (*(romvec->pv_nbputchar))(c); local_irq_restore(flags); return i; /* Ugh, we could spin forever on unsupported proms ;( */ } /* Blocking version of get character routine above. */ char prom_getchar(void) { int character; while((character = prom_nbgetchar()) == -1) ; return (char) character; } /* Blocking version of put character routine above. */ void prom_putchar(char c) { while(prom_nbputchar(c) == -1) ; return; } /* Query for input device type */ #if 0 enum prom_input_device prom_query_input_device() { unsigned long flags; int st_p; char propb[64]; char *p; switch(prom_vers) { case PROM_V0: case PROM_V2: default: switch(*romvec->pv_stdin) { case PROMDEV_KBD: return PROMDEV_IKBD; case PROMDEV_TTYA: return PROMDEV_ITTYA; case PROMDEV_TTYB: return PROMDEV_ITTYB; default: return PROMDEV_I_UNK; }; case PROM_V3: case PROM_P1275: local_irq_save(flags); st_p = (*romvec->pv_v2devops.v2_inst2pkg)(*romvec->pv_v2bootargs.fd_stdin); __asm__ __volatile__("ld [%0], %%g6\n\t" : : "r" (¤t_set[smp_processor_id()]) : "memory"); local_irq_restore(flags); if(prom_node_has_property(st_p, "keyboard")) return PROMDEV_IKBD; prom_getproperty(st_p, "device_type", propb, sizeof(propb)); if(strncmp(propb, "serial", sizeof("serial"))) return PROMDEV_I_UNK; prom_getproperty(prom_root_node, "stdin-path", propb, sizeof(propb)); p = propb; while(*p) p++; p -= 2; if(p[0] == ':') { if(p[1] == 'a') return PROMDEV_ITTYA; else if(p[1] == 'b') return PROMDEV_ITTYB; } return PROMDEV_I_UNK; }; } #endif /* Query for output device type */ #if 0 enum prom_output_device prom_query_output_device() { unsigned long flags; int st_p; char propb[64]; char *p; int propl; switch(prom_vers) { case PROM_V0: switch(*romvec->pv_stdin) { case PROMDEV_SCREEN: return PROMDEV_OSCREEN; case PROMDEV_TTYA: return PROMDEV_OTTYA; case PROMDEV_TTYB: return PROMDEV_OTTYB; }; break; case PROM_V2: case PROM_V3: case PROM_P1275: local_irq_save(flags); st_p = (*romvec->pv_v2devops.v2_inst2pkg)(*romvec->pv_v2bootargs.fd_stdout); __asm__ __volatile__("ld [%0], %%g6\n\t" : : "r" (¤t_set[smp_processor_id()]) : "memory"); local_irq_restore(flags); propl = prom_getproperty(st_p, "device_type", propb, sizeof(propb)); if (propl >= 0 && propl == sizeof("display") && strncmp("display", propb, sizeof("display")) == 0) { return PROMDEV_OSCREEN; } if(prom_vers == PROM_V3) { if(strncmp("serial", propb, sizeof("serial"))) return PROMDEV_O_UNK; prom_getproperty(prom_root_node, "stdout-path", propb, sizeof(propb)); p = propb; while(*p) p++; p -= 2; if(p[0]==':') { if(p[1] == 'a') return PROMDEV_OTTYA; else if(p[1] == 'b') return PROMDEV_OTTYB; } return PROMDEV_O_UNK; } else { /* This works on SS-2 (an early OpenFirmware) still. */ switch(*romvec->pv_stdin) { case PROMDEV_TTYA: return PROMDEV_OTTYA; case PROMDEV_TTYB: return PROMDEV_OTTYB; }; } break; }; return PROMDEV_O_UNK; } #endif
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