include/hw/sd/sdhci.h

   1 /*
   2  * SD Association Host Standard Specification v2.0 controller emulation
   3  *
   4  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   5  * Mitsyanko Igor <i.mitsyanko@samsung.com>
   6  * Peter A.G. Crosthwaite <peter.crosthwaite@petalogix.com>
   7  *
   8  * Based on MMC controller for Samsung S5PC1xx-based board emulation
   9  * by Alexey Merkulov and Vladimir Monakhov.
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the
  13  * Free Software Foundation; either version 2 of the License, or (at your
  14  * option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  19  * See the GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU _General Public License along
  22  * with this program; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 #ifndef SDHCI_H
  26 #define SDHCI_H
  27
  28 #include "qemu-common.h"
  29 #include "hw/pci/pci.h"
  30 #include "hw/sysbus.h"
  31 #include "hw/sd/sd.h"
  32
  33 /* SD/MMC host controller state */
  34 typedef struct SDHCIState {
  35     /*< private >*/
  36     union {
  37         PCIDevice pcidev;
  38         SysBusDevice busdev;
  39     };
  40
  41     /*< public >*/
  42     SDBus sdbus;
  43     MemoryRegion iomem;
  44     AddressSpace sysbus_dma_as;
  45     AddressSpace *dma_as;
  46     MemoryRegion *dma_mr;
  47     const MemoryRegionOps *io_ops;
  48
  49     QEMUTimer *insert_timer;       /* timer for 'changing' sd card. */
  50     QEMUTimer *transfer_timer;
  51     qemu_irq irq;
  52
  53     /* Registers cleared on reset */
  54     uint32_t sdmasysad;    /* SDMA System Address register */
  55     uint16_t blksize;      /* Host DMA Buff Boundary and Transfer BlkSize Reg */
  56     uint16_t blkcnt;       /* Blocks count for current transfer */
  57     uint32_t argument;     /* Command Argument Register */
  58     uint16_t trnmod;       /* Transfer Mode Setting Register */
  59     uint16_t cmdreg;       /* Command Register */
  60     uint32_t rspreg[4];    /* Response Registers 0-3 */
  61     uint32_t prnsts;       /* Present State Register */
  62     uint8_t  hostctl1;     /* Host Control Register */
  63     uint8_t  pwrcon;       /* Power control Register */
  64     uint8_t  blkgap;       /* Block Gap Control Register */
  65     uint8_t  wakcon;       /* WakeUp Control Register */
  66     uint16_t clkcon;       /* Clock control Register */
  67     uint8_t  timeoutcon;   /* Timeout Control Register */
  68     uint8_t  admaerr;      /* ADMA Error Status Register */
  69     uint16_t norintsts;    /* Normal Interrupt Status Register */
  70     uint16_t errintsts;    /* Error Interrupt Status Register */
  71     uint16_t norintstsen;  /* Normal Interrupt Status Enable Register */
  72     uint16_t errintstsen;  /* Error Interrupt Status Enable Register */
  73     uint16_t norintsigen;  /* Normal Interrupt Signal Enable Register */
  74     uint16_t errintsigen;  /* Error Interrupt Signal Enable Register */
  75     uint16_t acmd12errsts; /* Auto CMD12 error status register */
  76     uint16_t hostctl2;     /* Host Control 2 */
  77     uint64_t admasysaddr;  /* ADMA System Address Register */
  78
  79     /* Read-only registers */
  80     uint64_t capareg;      /* Capabilities Register */
  81     uint64_t maxcurr;      /* Maximum Current Capabilities Register */
  82     uint16_t version;      /* Host Controller Version Register */
  83
  84     uint8_t  *fifo_buffer; /* SD host i/o FIFO buffer */
  85     uint32_t buf_maxsz;
  86     uint16_t data_count;   /* current element in FIFO buffer */
  87     uint8_t  stopped_state;/* Current SDHC state */
  88     bool     pending_insert_state;
  89     /* Buffer Data Port Register - virtual access point to R and W buffers */
  90     /* Software Reset Register - always reads as 0 */
  91     /* Force Event Auto CMD12 Error Interrupt Reg - write only */
  92     /* Force Event Error Interrupt Register- write only */
  93     /* RO Host Controller Version Register always reads as 0x2401 */
  94
  95     /* Configurable properties */
  96     bool pending_insert_quirk; /* Quirk for Raspberry Pi card insert int */
  97     uint32_t quirks;
  98     uint8_t sd_spec_version;
  99     uint8_t uhs_mode;
 100 } SDHCIState;
 101
 102 /*
 103  * Controller does not provide transfer-complete interrupt when not
 104  * busy.
 105  *
 106  * NOTE: This definition is taken out of Linux kernel and so the
 107  * original bit number is preserved
 108  */
 109 #define SDHCI_QUIRK_NO_BUSY_IRQ    BIT(14)
 110
 111 #define TYPE_PCI_SDHCI "sdhci-pci"
 112 #define PCI_SDHCI(obj) OBJECT_CHECK(SDHCIState, (obj), TYPE_PCI_SDHCI)
 113
 114 #define TYPE_SYSBUS_SDHCI "generic-sdhci"
 115 #define SYSBUS_SDHCI(obj)                               \
 116      OBJECT_CHECK(SDHCIState, (obj), TYPE_SYSBUS_SDHCI)
 117
 118 #define TYPE_IMX_USDHC "imx-usdhc"
 119
 120 #endif /* SDHCI_H */