protos.h

   1 /* Declarations common the the C portions of the QEMU PALcode console.
   2
   3    Copyright (C) 2011 Richard Henderson
   4
   5    This file is part of QEMU PALcode.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the text
  15    of the GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; see the file COPYING.  If not see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef PROTOS_H
  22 #define PROTOS_H 1
  23
  24 #include <stdint.h>
  25 #include <stdbool.h>
  26 #include <stddef.h>
  27 #include <string.h>
  28
  29
  30 /*
  31  * Call_Pal functions.
  32  */
  33
  34 static inline void wrent(void *cb, unsigned long which)
  35 {
  36   register void *a0 __asm__("$16") = cb;
  37   register unsigned long a1 __asm__("$17") = which;
  38
  39   asm volatile ("call_pal 0x34"
  40                 : "+r"(a0), "+r"(a1)
  41                 : : "$1", "$22", "$23", "$24", "$25");
  42 }
  43
  44 static inline unsigned long swpipl(unsigned long newipl)
  45 {
  46   register unsigned long v0 __asm__("$0");
  47   register unsigned long a0 __asm__("$16") = newipl;
  48
  49   asm volatile ("call_pal 0x35"
  50                 : "=r"(v0), "+r"(a0)
  51                 : : "$1", "$22", "$23", "$24", "$25");
  52
  53   return v0;
  54 }
  55
  56 static inline unsigned long rdps(void)
  57 {
  58   register unsigned long v0 __asm__("$0");
  59
  60   asm volatile ("call_pal 0x36"
  61                 : "=r"(v0) : : "$1", "$22", "$23", "$24", "$25");
  62
  63   return v0;
  64 }
  65
  66 static inline void wrkgp(void)
  67 {
  68   asm volatile ("mov $29, $16\n\tcall_pal 0x37"
  69                 : : : "$16", "$1", "$22", "$23", "$24", "$25");
  70 }
  71
  72 static inline unsigned long wtint(unsigned long skip)
  73 {
  74   register unsigned long v0 __asm__("$0");
  75   register unsigned long a0 __asm__("$16") = skip;
  76
  77   asm volatile ("call_pal 0x3e"
  78                 : "=r"(v0), "+r"(a0)
  79                 : : "$1", "$22", "$23", "$24", "$25");
  80
  81   return v0;
  82 }
  83
  84 /*
  85  * Cserve functions.
  86  */
  87
  88 static inline unsigned long ldq_p(unsigned long addr)
  89 {
  90   register unsigned long v0 __asm__("$0");
  91   register unsigned long a0 __asm__("$16") = 1;
  92   register unsigned long a1 __asm__("$17") = addr;
  93
  94   asm volatile ("call_pal 9"
  95                 : "=r"(v0), "+r"(a0), "+r"(a1) :
  96                 : "$18", "$19", "$20", "$21");
  97
  98   return v0;
  99 }
 100
 101 static inline unsigned long stq_p(unsigned long port, unsigned long val)
 102 {
 103   register unsigned long v0 __asm__("$0");
 104   register unsigned long a0 __asm__("$16") = 2;
 105   register unsigned long a1 __asm__("$17") = port;
 106   register unsigned long a2 __asm__("$18") = val;
 107
 108   asm volatile ("call_pal 9"
 109                 : "=r"(v0), "+r"(a0), "+r"(a1), "+r"(a2) :
 110                 : "$19", "$20", "$21");
 111
 112   return v0;
 113 }
 114
 115 static inline unsigned long get_wall_time(void)
 116 {
 117   register unsigned long v0 __asm__("$0");
 118   register unsigned long a0 __asm__("$16") = 3;
 119
 120   asm("call_pal 9" : "=r"(v0), "+r"(a0) : : "$17", "$18", "$19", "$20", "$21");
 121
 122   return v0;
 123 }
 124
 125 static inline unsigned long get_alarm(void)
 126 {
 127   register unsigned long v0 __asm__("$0");
 128   register unsigned long a0 __asm__("$16") = 4;
 129
 130   asm("call_pal 9" : "=r"(v0), "+r"(a0) : : "$17", "$18", "$19", "$20", "$21");
 131
 132   return v0;
 133 }
 134
 135 static inline void set_alarm_rel(unsigned long nsec)
 136 {
 137   register unsigned long a0 __asm__("$16") = 5;
 138   register unsigned long a1 __asm__("$17") = nsec;
 139
 140   asm volatile ("call_pal 9"
 141                 : "+r"(a0), "+r"(a1)
 142                 : : "$0", "$18", "$19", "$20", "$21");
 143 }
 144
 145 static inline void set_alarm_abs(unsigned long nsec)
 146 {
 147   register unsigned long a0 __asm__("$16") = 6;
 148   register unsigned long a1 __asm__("$17") = nsec;
 149
 150   asm volatile ("call_pal 9"
 151                 : "+r"(a0), "+r"(a1)
 152                 : : "$0", "$18", "$19", "$20", "$21");
 153 }
 154
 155 /*
 156  * I/O functions
 157  */
 158
 159 extern void *pci_io_base;
 160 extern void *pci_mem_base;
 161
 162 static inline uint8_t inb(unsigned long port)
 163 {
 164   return *(volatile uint8_t *)(pci_io_base + port);
 165 }
 166
 167 static inline uint16_t inw(unsigned long port)
 168 {
 169   return *(volatile uint16_t *)(pci_io_base + port);
 170 }
 171
 172 static inline uint32_t inl(unsigned long port)
 173 {
 174   return *(volatile uint32_t *)(pci_io_base + port);
 175 }
 176
 177 static inline void outb(uint8_t val, unsigned long port)
 178 {
 179   *(volatile uint8_t *)(pci_io_base + port) = val;
 180 }
 181
 182 static inline void outw(uint16_t val, unsigned long port)
 183 {
 184   *(volatile uint16_t *)(pci_io_base + port) = val;
 185 }
 186
 187 static inline void outl(uint32_t val, unsigned long port)
 188 {
 189   *(volatile uint32_t *)(pci_io_base + port) = val;
 190 }
 191
 192 /*
 193  * CRB functions
 194  */
 195
 196 extern unsigned long crb_dispatch(long select, long a1, long a2,
 197                                   long a3, long a4);
 198 extern unsigned long crb_fixup(unsigned long vptptr, unsigned long hwrpb);
 199
 200 /*
 201  * The Console
 202  */
 203
 204 extern bool have_vga;
 205
 206 extern void do_console(void);
 207 extern void entInt(void);
 208
 209 /*
 210  * Utils
 211  */
 212
 213 extern int printf(const char *, ...);
 214 extern void ndelay(unsigned long nsec);
 215
 216 static inline void udelay(unsigned long msec)
 217 {
 218   ndelay(msec * 1000);
 219 }
 220
 221 /*
 222  * Initialization
 223  */
 224 extern void ps2port_setup(void);
 225 extern void pci_setup(void);
 226 extern void vgahw_init(void);
 227
 228 #endif /* PROTOS_H */