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/*
* SD Association Host Standard Specification v2.0 controller emulation
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* Mitsyanko Igor <i.mitsyanko@samsung.com>
* Peter A.G. Crosthwaite <peter.crosthwaite@petalogix.com>
*
* Based on MMC controller for Samsung S5PC1xx-based board emulation
* by Alexey Merkulov and Vladimir Monakhov.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU _General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SDHCI_H
#define SDHCI_H
#include "hw/pci/pci.h"
#include "hw/sysbus.h"
#include "hw/sd/sd.h"
/* SD/MMC host controller state */
typedef struct SDHCIState {
/*< private >*/
union {
PCIDevice pcidev;
SysBusDevice busdev;
};
/*< public >*/
SDBus sdbus;
MemoryRegion iomem;
AddressSpace sysbus_dma_as;
AddressSpace *dma_as;
MemoryRegion *dma_mr;
const MemoryRegionOps *io_ops;
QEMUTimer *insert_timer; /* timer for 'changing' sd card. */
QEMUTimer *transfer_timer;
qemu_irq irq;
/* Registers cleared on reset */
uint32_t sdmasysad; /* SDMA System Address register */
uint16_t blksize; /* Host DMA Buff Boundary and Transfer BlkSize Reg */
uint16_t blkcnt; /* Blocks count for current transfer */
uint32_t argument; /* Command Argument Register */
uint16_t trnmod; /* Transfer Mode Setting Register */
uint16_t cmdreg; /* Command Register */
uint32_t rspreg[4]; /* Response Registers 0-3 */
uint32_t prnsts; /* Present State Register */
uint8_t hostctl1; /* Host Control Register */
uint8_t pwrcon; /* Power control Register */
uint8_t blkgap; /* Block Gap Control Register */
uint8_t wakcon; /* WakeUp Control Register */
uint16_t clkcon; /* Clock control Register */
uint8_t timeoutcon; /* Timeout Control Register */
uint8_t admaerr; /* ADMA Error Status Register */
uint16_t norintsts; /* Normal Interrupt Status Register */
uint16_t errintsts; /* Error Interrupt Status Register */
uint16_t norintstsen; /* Normal Interrupt Status Enable Register */
uint16_t errintstsen; /* Error Interrupt Status Enable Register */
uint16_t norintsigen; /* Normal Interrupt Signal Enable Register */
uint16_t errintsigen; /* Error Interrupt Signal Enable Register */
uint16_t acmd12errsts; /* Auto CMD12 error status register */
uint16_t hostctl2; /* Host Control 2 */
uint64_t admasysaddr; /* ADMA System Address Register */
/* Read-only registers */
uint64_t capareg; /* Capabilities Register */
uint64_t maxcurr; /* Maximum Current Capabilities Register */
uint16_t version; /* Host Controller Version Register */
uint8_t *fifo_buffer; /* SD host i/o FIFO buffer */
uint32_t buf_maxsz;
uint16_t data_count; /* current element in FIFO buffer */
uint8_t stopped_state;/* Current SDHC state */
bool pending_insert_state;
/* Buffer Data Port Register - virtual access point to R and W buffers */
/* Software Reset Register - always reads as 0 */
/* Force Event Auto CMD12 Error Interrupt Reg - write only */
/* Force Event Error Interrupt Register- write only */
/* RO Host Controller Version Register always reads as 0x2401 */
/* Configurable properties */
bool pending_insert_quirk; /* Quirk for Raspberry Pi card insert int */
uint32_t quirks;
uint8_t sd_spec_version;
uint8_t uhs_mode;
} SDHCIState;
/*
* Controller does not provide transfer-complete interrupt when not
* busy.
*
* NOTE: This definition is taken out of Linux kernel and so the
* original bit number is preserved
*/
#define SDHCI_QUIRK_NO_BUSY_IRQ BIT(14)
#define TYPE_PCI_SDHCI "sdhci-pci"
#define PCI_SDHCI(obj) OBJECT_CHECK(SDHCIState, (obj), TYPE_PCI_SDHCI)
#define TYPE_SYSBUS_SDHCI "generic-sdhci"
#define SYSBUS_SDHCI(obj) \
OBJECT_CHECK(SDHCIState, (obj), TYPE_SYSBUS_SDHCI)
#define TYPE_IMX_USDHC "imx-usdhc"
#endif /* SDHCI_H */
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