include/asm-m68k/mac_psc.h

   1 /*
   2  *      Apple Peripheral System Controller (PSC)
   3  *
   4  *      The PSC is used on the AV Macs to control IO functions not handled
   5  *      by the VIAs (Ethernet, DSP, SCC).
   6  */
   7
   8 #define PSCBASE         0x50F31000
   9
  10 /*
  11  *      The IER/IFR registers work like the VIA, except that it has 4
  12  *      of them each on different interrupt levels.
  13  */
  14
  15 #define pIFR3           0x130
  16 #define pIFR4           0x140
  17 #define pIFR5           0x150
  18 #define pIFR6           0x160
  19
  20 #define pIER3           0x134
  21 #define pIER4           0x144
  22 #define pIER5           0x154
  23 #define pIER6           0x164
  24
  25 /*
  26  *      Ethernet Control Registers
  27  */
  28
  29 #define PSC_ENETRD_CTL  0xc10
  30 #define PSC_ENETWR_CTL  0xc20
  31
  32 /*
  33  *      Receive DMA channel (add +0x10 for 2nd channel)
  34  */
  35
  36 #define PSC_ENETRD_ADDR 0x1020
  37 #define PSC_ENETRD_LEN  0x1024
  38 #define PSC_ENETRD_CMD  0x1028
  39
  40 /*
  41  *      Transmit DMA channel (add +0x10 for 2nd channel)
  42  */
  43
  44 #define PSC_ENETWR_ADDR 0x1040
  45 #define PSC_ENETWR_LEN  0x1044
  46 #define PSC_ENETWR_CMD  0x1048
  47
  48 /*
  49  *      Access functions
  50  */
  51
  52 extern volatile unsigned char *psc;
  53
  54 extern inline void psc_write_word(int offset, u16 data)
  55 {
  56         *((volatile u16 *)(psc+offset)) = data;
  57 }
  58
  59 extern inline void psc_write_long(int offset, u32 data)
  60 {
  61         *((volatile u32 *)(psc+offset)) = data;
  62 }
  63
  64 extern inline u16 psc_read_word(int offset)
  65 {
  66         return *((volatile u16 *)(psc+offset));
  67 }
  68
  69 extern inline u32 psc_read_long(int offset)
  70 {
  71         return *((volatile u32 *)(psc+offset));
  72 }
  73