resources/fdc.h

   1 /* Quarn OS
   2  *
   3  * FDC
   4  *
   5  * Copyright (C) 2008-2009 Pawel Dziepak
   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
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #include "resources/block.h"
  24 #include "resources/device.h"
  25 #include "isa.h"
  26
  27 namespace resources {
  28         class fdc : public block {
  29         private:
  30                 int sector_size;
  31                 int sectors_per_track;
  32
  33                 void fdc_init();
  34                 void fdc_read_sector(void *data, int head, int cyl, int start, int stop);
  35                 void fdc_write_sector(void *source, int head, int cyl, int start, int stop);
  36
  37                 /* Specific fdc orders */
  38                 void fdc_seek(int head, int cylinder);
  39                 void fdc_sense_int_status();
  40                 void fdc_recalibrate();
  41                 void fdc_read_data(int head, int cyl, int start, int stop);
  42                 void fdc_write_data(int head, int cyl, int start, int stop);
  43                 void fdc_set_disk_type();
  44                 void fdc_wait_command();
  45                 void fdc_wait_data();
  46                 void fdc_turn_off();
  47                 void fdc_reset();
  48                 void fdc_wait_int();
  49
  50                 void fdc_isr_normal();
  51                 void fdc_isr_dma();
  52
  53                 isa_did isaaddr;
  54
  55                 volatile bool irq_occured;
  56         public:
  57                 fdc();
  58
  59                 void read_block(int address, int count, void *buffer);
  60                 void write_block(int address, int count, void *buffer);
  61
  62                 int get_granulity();
  63
  64                 bool init_device(p<did> iadr);
  65
  66                 static void register_type();
  67         };
  68 }