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[/] [openrisc/] [trunk/] [or1ksim/] [peripheral/] [atahost.h] - Blame information for rev 774

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1 19 jeremybenn
/* atahost.h -- ATA Host code simulation
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   Copyright (C) 2002 Richard Herveille, rherveille@opencores.org
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   Copyright (C) 2008 Embecosm Limited
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   Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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   This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.
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   This program is free software; you can redistribute it and/or modify it
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   under the terms of the GNU General Public License as published by the Free
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   Software Foundation; either version 3 of the License, or (at your option)
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   any later version.
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   This program is distributed in the hope that it will be useful, but WITHOUT
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   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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   more details.
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   You should have received a copy of the GNU General Public License along
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   with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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/* This program is commented throughout in a fashion suitable for processing
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   with Doxygen. */
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/* Definitions for the Opencores ATA Host Controller Core */
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#ifndef ATAHOST__H
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#define ATAHOST__H
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#include "arch.h"
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#include "atadevice.h"
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/* --- Register definitions --- */
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/* ----- Core Registers                                              */
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#define ATA_CTRL  0x00          /* Control register                   */
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#define ATA_STAT  0x04          /* Status register                    */
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#define ATA_PCTR  0x08          /* PIO command timing register        */
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#define ATA_PFTR0 0x0c          /* PIO Fast Timing register Device0   */
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#define ATA_PFTR1 0x10          /* PIO Fast Timing register Device1   */
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#define ATA_DTR0  0x14          /* DMA Timing register Device2        */
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#define ATA_DTR1  0x18          /* DMA Timing register Device1        */
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#define ATA_TXB   0x3c          /* DMA Transmit buffer                */
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#define ATA_RXB   0x3c          /* DMA Receive buffer                 */
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/* ----------------------------                                       */
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/* ----- Bits definitions -----                                       */
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/* ----------------------------                                       */
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/* ----- Core Control register                                        */
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                                /* bits 31-16 are reserved            */
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#define ATA_DMA_EN  (0<<15)     /* DMAen, DMA enable bit              */
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                                /* bit 14 is reserved                 */
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#define ATA_DMA_WR  (1<<14)     /* DMA Write transaction              */
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#define ATA_DMA_RD  (0<<14)     /* DMA Read transaction               */
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                                /* bits 13-10 are reserved            */
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#define ATA_BELEC1  (1<< 9)     /* Big-Little endian conversion       */
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                                /* enable bit for Device1             */
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#define ATA_BELEC0  (1<< 8)     /* Big-Little endian conversion       */
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                                /* enable bit for Device0             */
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#define ATA_IDE_EN  (1<< 7)     /* IDE core enable bit                */
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#define ATA_FTE1    (1<< 6)     /* Device1 Fast PIO Timing Enable bit */
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#define ATA_FTE0    (1<< 5)     /* Device0 Fast PIO Timing Enable bit */
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#define ATA_PWPP    (1<< 4)     /* PIO Write Ping-Pong Enable bit     */
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#define ATA_IORDY_FTE1 (1<< 3)  /* Device1 Fast PIO Timing IORDY      */
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                                /* enable bit                         */
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#define ATA_IORDY_FTE0 (1<< 2)  /* Device0 Fast PIO Timing IORDY      */
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                                /* enable bit                         */
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#define ATA_IORDY   (1<< 1)     /* PIO Command Timing IORDY enable bit */
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#define ATA_RST     (1<< 0)     /* ATA Reset bit                      */
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/* ----- Core Status register                                         */
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#define ATA_DEVID   0xf0000000  /* bits 31-28 Device-ID               */
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#define ATA_REVNO   0x0f000000  /* bits 27-24 Revision number         */
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                                /* bits 23-16 are reserved            */
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#define ATA_DMA_TIP (1<<15)     /* DMA Transfer in progress           */
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                                /* bits 14-10 are reserved            */
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#define ATA_DRBE    (1<<10)     /* DMA Receive buffer empty           */
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#define ATA_DTBF    (1<< 9)     /* DMA Transmit buffer full           */
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#define ATA_DMARQ   (1<< 8)     /* DMARQ Line status                  */
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#define ATA_PIO_TIP (1<< 7      /* PIO Transfer in progress           */
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#define ATA_PWPPF   (1<< 6)     /* PIO write ping-pong full           */
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                                /* bits 5-1 are reserved              */
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#define ATA_IDEIS  (1<< 0)      /* IDE Interrupt status               */
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/* -----  Core Timing registers                                       */
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#define ATA_TEOC       24       /* End of cycle time          DMA/PIO */
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#define ATA_T4         16       /* DIOW- data hold time           PIO */
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#define ATA_T2          8       /* DIOR-/DIOW- pulse width        PIO */
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#define ATA_TD          8       /* DIOR-/DIOW- pulse width        DMA */
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#define ATA_T1          0       /* Address valid to DIOR-/DIOW-   PIO */
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#define ATA_TM          0       /* CS[1:0]valid to DIOR-/DIOW-    DMA */
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/* -----------------------------                                      */
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/* ----- Simulator defines -----                                      */
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/* -----------------------------                                      */
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#define ATA_ADDR_SPACE 0x80
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/* ----------------------------                                       */
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/* ----- Structs          -----                                       */
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/* ----------------------------                                       */
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struct ata_host
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{
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  /* Is peripheral enabled? */
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  int enabled;
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  /* Base address in memory                                     */
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  oraddr_t baseaddr;
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  /* Registered memory area                                     */
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  struct dev_memarea *mem;
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  /* Which IRQ to generate                                      */
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  int irq;
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  /* Which ocidec version is implemented                        */
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  int dev_id;
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  /* OCIDEC revision                                            */
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  int rev;
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  /* Current selected device                                    */
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  int dev_sel;
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  /* PIO T1 reset value                                         */
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  uint8_t pio_mode0_t1;
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  /* PIO T2 reset value                                         */
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  uint8_t pio_mode0_t2;
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  /* PIO T4 reset value                                         */
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  uint8_t pio_mode0_t4;
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  /* PIO Teoc reset value                                       */
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  uint8_t pio_mode0_teoc;
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  /* DMA Tm reset value                                         */
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  uint8_t dma_mode0_tm;
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  /* DMA Td reset value                                         */
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  uint8_t dma_mode0_td;
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  /* DMA Teoc reset value                                       */
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  uint8_t dma_mode0_teoc;
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  /* ata host registers                                         */
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  struct
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  {
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    uint32_t ctrl;
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    uint32_t stat;
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    uint32_t pctr;
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    uint32_t pftr0;
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    uint32_t pftr1;
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    uint32_t dtr0;
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    uint32_t dtr1;
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    uint32_t txb;
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    uint32_t rxb;
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  } regs;
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  /* connected ATA devices (slaves)                             */
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  struct ata_devices  devices;
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};
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/* ----------------------------                                       */
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/* ----- Prototypes       -----                                       */
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/* ----------------------------                                       */
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void ata_int (void *dat);
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/* ----------------------------                                       */
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/* ----- Macros           -----                                       */
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/* ----------------------------                                       */
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#define is_ata_hostadr(adr) (!(adr & 0x40))
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// FIXME
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#define ata_pio_delay(pioreg) ( (((pioreg >> ATA_T1) & 0xff) +1) + (((pioreg >> ATA_T2) & 0xff) +1) + (((pioreg >> ATA_T4) & 0xff) +1) +1 )
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#define ata_dma_delay(dmareg) ( (((dmareg >> ATA_TD) & 0xff) +1) + (((pioreg >> ATA_TM) & 0xff) +1) +1 )
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/* Prototypes for external use */
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void reg_ata_sec ();
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#endif /* ATAHOST__H */

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