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_idx(self, idx, name, ifacenum):
  24         name = name.upper()
  25         return ("typedef {0} {1}{2}_slave_num;".format(idx, name, ifacenum), 1)
  26
  27
  28 class uart(PBase):
  29     def importfn(self):
  30         return "          import Uart16550         :: *;"
  31
  32     def ifacedecl(self):
  33         return "            interface RS232_PHY_Ifc uart{0}_coe;\n" + \
  34                "            method Bit#(1) uart{0}_intr;"
  35
  36     def num_axi_regs32(self):
  37         return 8
  38
  39
  40 class rs232(PBase):
  41     def importfn(self):
  42         return "        import Uart_bs::*;\n" + \
  43                "        import RS232_modified::*;"
  44
  45     def ifacedecl(self):
  46         return "            interface RS232 uart{0}_coe;"
  47
  48     def num_axi_regs32(self):
  49         return 2
  50
  51
  52 class twi(PBase):
  53     def importfn(self):
  54         return "        import I2C_top           :: *;"
  55
  56     def ifacedecl(self):
  57         return "            interface I2C_out i2c{0}_out;\n" + \
  58                "            method Bit#(1) i2c{0}_isint;"
  59
  60     def num_axi_regs32(self):
  61         return 8
  62
  63
  64 class qspi(PBase):
  65     def importfn(self):
  66         return "        import qspi              :: *;"
  67
  68     def ifacedecl(self):
  69         return "            interface QSPI_out qspi{0}_out;\n" + \
  70                "            method Bit#(1) qspi{0}_isint;"
  71
  72     def num_axi_regs32(self):
  73         return 13
  74
  75
  76 class pwm(PBase):
  77     def importfn(self):
  78         return "        import pwm::*;"
  79
  80     def ifacedecl(self):
  81         return "        interface PWMIO pwm_o;"
  82
  83     def num_axi_regs32(self):
  84         return 4
  85
  86
  87 class gpio(PBase):
  88     def importfn(self):
  89         return "     import pinmux::*;\n" + \
  90                "     import mux::*;\n" + \
  91                "     import gpio::*;\n"
  92
  93     def ifacedecl(self):
  94         return "        interface GPIO_config#({1}) pad_config{0};"
  95
  96     def num_axi_regs32(self):
  97         return 2
  98
  99     def axi_slave_idx(self, idx, name, ifacenum):
 100         """ generates AXI slave number definition, except
 101             GPIO also has a muxer per bank
 102         """
 103         name = name.upper()
 104         (ret, x) = PBase.axi_slave_idx(self, idx, name, ifacenum)
 105         (ret2, x) = PBase.axi_slave_idx(self, idx, "mux", ifacenum)
 106         return ("%s\n%s" % (ret, ret2), 2)
 107
 108
 109 axi_slave_declarations = """\
 110 typedef  0  SlowMaster;
 111 {0}
 112 typedef  TAdd#(LastGen_slave_num,`ifdef CLINT       1 `else 0 `endif )
 113               CLINT_slave_num;
 114 typedef  TAdd#(CLINT_slave_num  ,`ifdef PLIC        1 `else 0 `endif )
 115               Plic_slave_num;
 116 typedef  TAdd#(Plic_slave_num   ,`ifdef AXIEXP      1 `else 0 `endif )
 117               AxiExp1_slave_num;
 118 typedef TAdd#(AxiExp1_slave_num,1) Num_Slow_Slaves;
 119 """
 120
 121
 122 class PFactory(object):
 123     def getcls(self, name):
 124         return {'uart': uart,
 125                 'rs232': rs232,
 126                 'twi': twi,
 127                 'qspi': qspi,
 128                 'pwm': pwm,
 129                 'gpio': gpio
 130                 }.get(name, None)