resources/uhci.h

   1 /* Quarn OS
   2  *
   3  * UHCI driver
   4  *
   5  * Copyright (C) 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 #ifndef _UHCI_H_
  24 #define _UHCI_H_
  25
  26 #include "device.h"
  27 #include "arch/low/general.h"
  28 #include "pci.h"
  29 #include "usb.h"
  30 #include "usb_hc.h"
  31
  32 namespace resources {
  33         class uhci : public usb_hc {
  34         public:
  35                 enum {
  36                         hc_stop = 0,
  37                         hc_run = 1,
  38                         hc_reset = 2,
  39                         hc_greset = 4,
  40                         hc_egsm = 8,
  41                         hc_fgr = 0x10,
  42                         hc_swdgb = 0x20,
  43                         hc_cf = 0x40,
  44                         hc_maxp = 0x80
  45                 };
  46
  47                 enum uhci_registers {
  48                         uhci_command,
  49                         uhci_status = 2,
  50                         uhci_flbaseadd = 8,
  51                         uhci_portsc1 = 0x10
  52                 };
  53
  54                 /* TD, QH, frame */
  55
  56                 struct transfer_descriptor {
  57                         u32 link_ptr;
  58                         volatile u32 control;
  59                         u32 token;
  60                         u32 buffer;
  61                 };
  62
  63                 struct queue_head {
  64                         u32 head_ptr;
  65                         volatile u32 element_ptr;
  66                 };
  67
  68                 typedef u32 frame_pointer;
  69
  70                 void irq();
  71
  72                 transfer_descriptor *td;
  73                 frame_pointer *fp;
  74                 int last_fp;
  75                 queue_head *qh;
  76
  77         protected:
  78
  79                 pci_did pciid;
  80         public:
  81                 void init_structures();
  82                 int get_free_address();
  83                 void *control_transfer(int pid, void *val, int length, int rlength, u8 address);
  84                 void bulk_transfer(int, void *, int, int, int);
  85
  86                 void init();
  87                 void device_connected(int port);
  88
  89                 uhci() : td(0), fp(0), last_fp(0) {}
  90
  91                 //virtual void init_port(int i) = 0;
  92
  93                 //virtual array<char> control_transfer(usb_pid, array<char>, int, int) = 0;
  94
  95                 bool init_device(p<did>);
  96
  97                 void scan_bus(delegate<void, int>);
  98
  99                 static bool check_device(p<did>);
 100                 static void register_type();
 101         };
 102 }
 103
 104 #endif