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/*
* Allwinner (sun4i and above) SD Host Controller emulation
*
* Copyright (C) 2019 Niek Linnenbank <nieklinnenbank@gmail.com>
*
* 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 HW_SD_ALLWINNER_SDHOST_H
#define HW_SD_ALLWINNER_SDHOST_H
#include "qom/object.h"
#include "hw/sysbus.h"
#include "hw/sd/sd.h"
/**
* Object model types
* @{
*/
/** Generic Allwinner SD Host Controller (abstract) */
#define TYPE_AW_SDHOST "allwinner-sdhost"
/** Allwinner sun4i family (A10, A12) */
#define TYPE_AW_SDHOST_SUN4I TYPE_AW_SDHOST "-sun4i"
/** Allwinner sun5i family and newer (A13, H2+, H3, etc) */
#define TYPE_AW_SDHOST_SUN5I TYPE_AW_SDHOST "-sun5i"
/** @} */
/**
* Object model macros
* @{
*/
OBJECT_DECLARE_TYPE(AwSdHostState, AwSdHostClass, AW_SDHOST)
/** @} */
/**
* Allwinner SD Host Controller object instance state.
*/
struct AwSdHostState {
/*< private >*/
SysBusDevice busdev;
/*< public >*/
/** Secure Digital (SD) bus, which connects to SD card (if present) */
SDBus sdbus;
/** Maps I/O registers in physical memory */
MemoryRegion iomem;
/** Interrupt output signal to notify CPU */
qemu_irq irq;
/** Memory region where DMA transfers are done */
MemoryRegion *dma_mr;
/** Address space used internally for DMA transfers */
AddressSpace dma_as;
/** Number of bytes left in current DMA transfer */
uint32_t transfer_cnt;
/**
* @name Hardware Registers
* @{
*/
uint32_t global_ctl; /**< Global Control */
uint32_t clock_ctl; /**< Clock Control */
uint32_t timeout; /**< Timeout */
uint32_t bus_width; /**< Bus Width */
uint32_t block_size; /**< Block Size */
uint32_t byte_count; /**< Byte Count */
uint32_t command; /**< Command */
uint32_t command_arg; /**< Command Argument */
uint32_t response[4]; /**< Command Response */
uint32_t irq_mask; /**< Interrupt Mask */
uint32_t irq_status; /**< Raw Interrupt Status */
uint32_t status; /**< Status */
uint32_t fifo_wlevel; /**< FIFO Water Level */
uint32_t fifo_func_sel; /**< FIFO Function Select */
uint32_t debug_enable; /**< Debug Enable */
uint32_t auto12_arg; /**< Auto Command 12 Argument */
uint32_t newtiming_set; /**< SD New Timing Set */
uint32_t newtiming_debug; /**< SD New Timing Debug */
uint32_t hardware_rst; /**< Hardware Reset */
uint32_t dmac; /**< Internal DMA Controller Control */
uint32_t desc_base; /**< Descriptor List Base Address */
uint32_t dmac_status; /**< Internal DMA Controller Status */
uint32_t dmac_irq; /**< Internal DMA Controller IRQ Enable */
uint32_t card_threshold; /**< Card Threshold Control */
uint32_t startbit_detect; /**< eMMC DDR Start Bit Detection Control */
uint32_t response_crc; /**< Response CRC */
uint32_t data_crc[8]; /**< Data CRC */
uint32_t status_crc; /**< Status CRC */
/** @} */
};
/**
* Allwinner SD Host Controller class-level struct.
*
* This struct is filled by each sunxi device specific code
* such that the generic code can use this struct to support
* all devices.
*/
struct AwSdHostClass {
/*< private >*/
SysBusDeviceClass parent_class;
/*< public >*/
/** Maximum buffer size in bytes per DMA descriptor */
size_t max_desc_size;
bool is_sun4i;
};
#endif /* HW_SD_ALLWINNER_SDHOST_H */
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