src/firmware/scsiPhy.h

   1 //      Copyright (C) 2013 Michael McMaster <michael@codesrc.com>
   2 //
   3 //      This file is part of SCSI2SD.
   4 //
   5 //      SCSI2SD is free software: you can redistribute it and/or modify
   6 //      it under the terms of the GNU General Public License as published by
   7 //      the Free Software Foundation, either version 3 of the License, or
   8 //      (at your option) any later version.
   9 //
  10 //      SCSI2SD is distributed in the hope that it will be useful,
  11 //      but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 //      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 //      GNU General Public License for more details.
  14 //
  15 //      You should have received a copy of the GNU General Public License
  16 //      along with SCSI2SD.  If not, see <http://www.gnu.org/licenses/>.
  17 #ifndef SCSIPHY_H
  18 #define SCSIPHY_H
  19
  20 #define SCSI_CTRL_IDMASK ((volatile uint8_t*)0x60000000)
  21 #define SCSI_CTRL_PHASE ((volatile uint8_t*)0x60000002)
  22 #define SCSI_CTRL_BSY ((volatile uint8_t*)0x60000004)
  23 #define SCSI_FIFO_SEL ((volatile uint8_t*)0x60000006)
  24 #define SCSI_DATA_CNT_HI ((volatile uint8_t*)0x60000008)
  25 #define SCSI_DATA_CNT_LO ((volatile uint8_t*)0x6000000A)
  26 #define SCSI_DATA_CNT_SET ((volatile uint8_t*)0x6000000C)
  27 #define SCSI_CTRL_DBX ((volatile uint8_t*)0x6000000E)
  28 #define SCSI_CTRL_SYNC_OFFSET ((volatile uint8_t*)0x60000010)
  29 #define SCSI_CTRL_DESKEW ((volatile uint8_t*)0x60000012)
  30 #define SCSI_CTRL_TIMING ((volatile uint8_t*)0x60000014)
  31 #define SCSI_CTRL_FLAGS ((volatile uint8_t*)0x60000016)
  32 #define SCSI_CTRL_FLAGS_DISABLE_GLITCH 0x1
  33 #define SCSI_CTRL_FLAGS_ENABLE_PARITY 0x2
  34
  35 #define SCSI_STS_FIFO ((volatile uint8_t*)0x60000020)
  36 #define SCSI_STS_ALTFIFO ((volatile uint8_t*)0x60000022)
  37 #define SCSI_STS_FIFO_COMPLETE ((volatile uint8_t*)0x60000024)
  38 #define SCSI_STS_SELECTED ((volatile uint8_t*)0x60000026)
  39 #define SCSI_STS_SCSI ((volatile uint8_t*)0x60000028)
  40 #define SCSI_STS_DBX ((volatile uint8_t*)0x6000002A)
  41 #define SCSI_STS_PARITY_ERR ((volatile uint8_t*)0x6000002C)
  42
  43 #define SCSI_FIFO_DATA ((volatile uint16_t*)0x60000040)
  44 #define SCSI_FIFO_DEPTH 512
  45
  46
  47 #define scsiPhyFifoFull() ((*SCSI_STS_FIFO & 0x01) == 0x01)
  48 #define scsiPhyFifoEmpty() ((*SCSI_STS_FIFO & 0x02) == 0x02)
  49 #define scsiPhyFifoAltEmpty() ((*SCSI_STS_ALTFIFO & 0x02) == 0x02)
  50
  51 #define scsiPhyFifoFlip() \
  52 {\
  53         scsiPhyFifoSel ^= 1; \
  54         *SCSI_FIFO_SEL = scsiPhyFifoSel; \
  55 }
  56
  57 #define scsiPhyTx(val) *SCSI_FIFO_DATA = (val)
  58 #define scsiPhyRx() *SCSI_FIFO_DATA
  59 #define scsiPhyComplete() ((*SCSI_STS_FIFO_COMPLETE & 0x01) == 0x01)
  60
  61 #define scsiStatusATN() ((*SCSI_STS_SCSI & 0x01) == 0x01)
  62 #define scsiStatusBSY() ((*SCSI_STS_SCSI & 0x02) == 0x02)
  63 #define scsiStatusRST() ((*SCSI_STS_SCSI & 0x04) == 0x04)
  64 #define scsiStatusSEL() ((*SCSI_STS_SCSI & 0x08) == 0x08)
  65 #define scsiStatusACK() ((*SCSI_STS_SCSI & 0x10) == 0x10)
  66
  67 #define scsiParityError() ((*SCSI_STS_PARITY_ERR & 0x1) == 0x1)
  68
  69 // Disable DMA due to errate with the STM32F205 DMA2 controller when
  70 // concurrently transferring FSMC (with FIFO) and APB (ie. sdio)
  71 // peripherals.
  72 #undef SCSI_FSMC_DMA
  73
  74 extern uint8_t scsiPhyFifoSel;
  75
  76 void scsiPhyInit(void);
  77 void scsiPhyConfig(void);
  78 void scsiPhyReset(void);
  79
  80 void scsiEnterPhase(int phase);
  81 void scsiEnterBusFree(void);
  82
  83 void scsiSetDataCount(uint32_t count);
  84
  85 void scsiWrite(const uint8_t* data, uint32_t count);
  86 void scsiRead(uint8_t* data, uint32_t count, int* parityError);
  87 void scsiWriteByte(uint8_t value);
  88 uint8_t scsiReadByte(void);
  89
  90
  91 void sdTmpRead(uint8_t* data, uint32_t lba, int sectors);
  92 void sdTmpWrite(uint8_t* data, uint32_t lba, int sectors);
  93
  94 extern volatile uint8_t scsiRxDMAComplete;
  95 extern volatile uint8_t scsiTxDMAComplete;
  96 #define scsiDMABusy() (!(scsiRxDMAComplete && scsiTxDMAComplete))
  97
  98 void scsiReadDMA(uint8_t* data, uint32_t count);
  99 int scsiReadDMAPoll();
 100
 101 void scsiWriteDMA(const uint8_t* data, uint32_t count);
 102 int scsiWriteDMAPoll();
 103
 104 int scsiSelfTest(void);
 105
 106 #endif