src/bsv/peripheral_gen.py

   1 class PBase(object):
   2     pass
   3
   4     def axibase(self, name, ifacenum):
   5         name = name.upper()
   6         return "%(name)s%(ifacenum)dBase" % locals()
   7
   8     def axiend(self, name, ifacenum):
   9         name = name.upper()
  10         return "%(name)s%(ifacenum)dEnd" % locals()
  11
  12     def axi_reg_def(self, start, name, ifacenum):
  13         name = name.upper()
  14         offs = self.num_axi_regs32() * 4 * 16
  15         end = start + offs - 1
  16         bname = self.axibase(name, ifacenum)
  17         bend = self.axiend(name, ifacenum)
  18         comment = "%d 32-bit regs" % self.num_axi_regs32()
  19         return ("    `define%(bname)s 'h%(start)08X\n"
  20                 "    `define%(bend)s  'h%(end)08X // %(comment)s" % locals(),
  21                 offs)
  22
  23     def axi_slave_name(self, name, ifacenum):
  24         name = name.upper()
  25         return "{0}{1}_slave_num".format(name, ifacenum)
  26
  27     def axi_slave_idx(self, idx, name, ifacenum):
  28         name = self.axi_slave_name(name, ifacenum)
  29         return ("typedef {0} {1};".format(idx, name), 1)
  30
  31     def axi_addr_map(self, name, ifacenum):
  32         bname = self.axibase(name, ifacenum)
  33         bend = self.axiend(name, ifacenum)
  34         name = self.axi_slave_name(name, ifacenum)
  35         return """\
  36         if(addr>=`{0} && addr<=`{1})
  37             return tuple2(True,fromInteger(valueOf({2})));
  38         else""".format(bname, bend, name)
  39
  40
  41 class uart(PBase):
  42     def importfn(self):
  43         return "          import Uart16550         :: *;"
  44
  45     def ifacedecl(self):
  46         return "            interface RS232_PHY_Ifc uart{0}_coe;\n" + \
  47                "            method Bit#(1) uart{0}_intr;"
  48
  49     def num_axi_regs32(self):
  50         return 8
  51
  52
  53 class rs232(PBase):
  54     def importfn(self):
  55         return "        import Uart_bs::*;\n" + \
  56                "        import RS232_modified::*;"
  57
  58     def ifacedecl(self):
  59         return "            interface RS232 uart{0}_coe;"
  60
  61     def num_axi_regs32(self):
  62         return 2
  63
  64
  65 class twi(PBase):
  66     def importfn(self):
  67         return "        import I2C_top           :: *;"
  68
  69     def ifacedecl(self):
  70         return "            interface I2C_out i2c{0}_out;\n" + \
  71                "            method Bit#(1) i2c{0}_isint;"
  72
  73     def num_axi_regs32(self):
  74         return 8
  75
  76
  77 class qspi(PBase):
  78     def importfn(self):
  79         return "        import qspi              :: *;"
  80
  81     def ifacedecl(self):
  82         return "            interface QSPI_out qspi{0}_out;\n" + \
  83                "            method Bit#(1) qspi{0}_isint;"
  84
  85     def num_axi_regs32(self):
  86         return 13
  87
  88
  89 class pwm(PBase):
  90     def importfn(self):
  91         return "        import pwm::*;"
  92
  93     def ifacedecl(self):
  94         return "        interface PWMIO pwm_o;"
  95
  96     def num_axi_regs32(self):
  97         return 4
  98
  99
 100 class gpio(PBase):
 101     def importfn(self):
 102         return "     import pinmux::*;\n" + \
 103                "     import mux::*;\n" + \
 104                "     import gpio::*;\n"
 105
 106     def ifacedecl(self):
 107         return "        interface GPIO_config#({1}) pad_config{0};"
 108
 109     def num_axi_regs32(self):
 110         return 2
 111
 112     def axi_slave_idx(self, idx, name, ifacenum):
 113         """ generates AXI slave number definition, except
 114             GPIO also has a muxer per bank
 115         """
 116         name = name.upper()
 117         (ret, x) = PBase.axi_slave_idx(self, idx, name, ifacenum)
 118         (ret2, x) = PBase.axi_slave_idx(self, idx, "mux", ifacenum)
 119         return ("%s\n%s" % (ret, ret2), 2)
 120
 121
 122 axi_slave_declarations = """\
 123 typedef  0  SlowMaster;
 124 {0}
 125 typedef  TAdd#(LastGen_slave_num,`ifdef CLINT       1 `else 0 `endif )
 126               CLINT_slave_num;
 127 typedef  TAdd#(CLINT_slave_num  ,`ifdef PLIC        1 `else 0 `endif )
 128               Plic_slave_num;
 129 typedef  TAdd#(Plic_slave_num   ,`ifdef AXIEXP      1 `else 0 `endif )
 130               AxiExp1_slave_num;
 131 typedef TAdd#(AxiExp1_slave_num,1) Num_Slow_Slaves;
 132 """
 133
 134
 135 class PFactory(object):
 136     def getcls(self, name):
 137         return {'uart': uart,
 138                 'rs232': rs232,
 139                 'twi': twi,
 140                 'qspi': qspi,
 141                 'pwm': pwm,
 142                 'gpio': gpio
 143                 }.get(name, None)