hw/sdhci: introduce standard SD host controller

Device model for standard SD Host Controller Interface (SDHCI) compliant with
version 2.00 of SD association specification.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Igor Mitsyanko <i.mitsyanko@samsung.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

default-configs/arm-softmmu.mak

@@ -47,3 +47,5 @@ CONFIG_XGMAC=y
 
 CONFIG_VERSATILE_PCI=y
 CONFIG_VERSATILE_I2C=y
+
+CONFIG_SDHCI=y

hw/Makefile.objs

@@ -43,6 +43,7 @@ common-obj-y += ccid-card-passthru.o
 common-obj-$(CONFIG_SMARTCARD_NSS) += ccid-card-emulated.o
 endif
 common-obj-$(CONFIG_I8259) += i8259_common.o i8259.o
+common-obj-$(CONFIG_SDHCI) += sdhci.o
 common-obj-y += fifo.o
 common-obj-y += pam.o
 

hw/sdhci.h

+/*
+ * 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 "qemu-common.h"
+#include "sysbus.h"
+#include "sd.h"
+
+/* R/W SDMA System Address register 0x0 */
+#define SDHC_SYSAD                     0x00
+
+/* R/W Host DMA Buffer Boundary and Transfer Block Size Register 0x0 */
+#define SDHC_BLKSIZE                   0x04
+
+/* R/W Blocks count for current transfer 0x0 */
+#define SDHC_BLKCNT                    0x06
+
+/* R/W Command Argument Register 0x0 */
+#define SDHC_ARGUMENT                  0x08
+
+/* R/W Transfer Mode Setting Register 0x0 */
+#define SDHC_TRNMOD                    0x0C
+#define SDHC_TRNS_DMA                  0x0001
+#define SDHC_TRNS_BLK_CNT_EN           0x0002
+#define SDHC_TRNS_ACMD12               0x0004
+#define SDHC_TRNS_READ                 0x0010
+#define SDHC_TRNS_MULTI                0x0020
+
+/* R/W Command Register 0x0 */
+#define SDHC_CMDREG                    0x0E
+#define SDHC_CMD_RSP_WITH_BUSY         (3 << 0)
+#define SDHC_CMD_DATA_PRESENT          (1 << 5)
+#define SDHC_CMD_SUSPEND               (1 << 6)
+#define SDHC_CMD_RESUME                (1 << 7)
+#define SDHC_CMD_ABORT                 ((1 << 6)|(1 << 7))
+#define SDHC_CMD_TYPE_MASK             ((1 << 6)|(1 << 7))
+#define SDHC_COMMAND_TYPE(x)           ((x) & SDHC_CMD_TYPE_MASK)
+
+/* ROC Response Register 0 0x0 */
+#define SDHC_RSPREG0                   0x10
+/* ROC Response Register 1 0x0 */
+#define SDHC_RSPREG1                   0x14
+/* ROC Response Register 2 0x0 */
+#define SDHC_RSPREG2                   0x18
+/* ROC Response Register 3 0x0 */
+#define SDHC_RSPREG3                   0x1C
+
+/* R/W Buffer Data Register 0x0 */
+#define SDHC_BDATA                     0x20
+
+/* R/ROC Present State Register 0x000A0000 */
+#define SDHC_PRNSTS                    0x24
+#define SDHC_CMD_INHIBIT               0x00000001
+#define SDHC_DATA_INHIBIT              0x00000002
+#define SDHC_DAT_LINE_ACTIVE           0x00000004
+#define SDHC_DOING_WRITE               0x00000100
+#define SDHC_DOING_READ                0x00000200
+#define SDHC_SPACE_AVAILABLE           0x00000400
+#define SDHC_DATA_AVAILABLE            0x00000800
+#define SDHC_CARD_PRESENT              0x00010000
+#define SDHC_CARD_DETECT               0x00040000
+#define SDHC_WRITE_PROTECT             0x00080000
+#define TRANSFERRING_DATA(x)           \
+    ((x) & (SDHC_DOING_READ | SDHC_DOING_WRITE))
+
+/* R/W Host control Register 0x0 */
+#define SDHC_HOSTCTL                   0x28
+#define SDHC_CTRL_DMA_CHECK_MASK       0x18
+#define SDHC_CTRL_SDMA                 0x00
+#define SDHC_CTRL_ADMA1_32             0x08
+#define SDHC_CTRL_ADMA2_32             0x10
+#define SDHC_CTRL_ADMA2_64             0x18
+#define SDHC_DMA_TYPE(x)               ((x) & SDHC_CTRL_DMA_CHECK_MASK)
+
+/* R/W Power Control Register 0x0 */
+#define SDHC_PWRCON                    0x29
+#define SDHC_POWER_ON                  (1 << 0)
+
+/* R/W Block Gap Control Register 0x0 */
+#define SDHC_BLKGAP                    0x2A
+#define SDHC_STOP_AT_GAP_REQ           0x01
+#define SDHC_CONTINUE_REQ              0x02
+
+/* R/W WakeUp Control Register 0x0 */
+#define SDHC_WAKCON                    0x2B
+#define SDHC_WKUP_ON_INS               (1 << 1)
+#define SDHC_WKUP_ON_RMV               (1 << 2)
+
+/* CLKCON */
+#define SDHC_CLKCON                    0x2C
+#define SDHC_CLOCK_INT_STABLE          0x0002
+#define SDHC_CLOCK_INT_EN              0x0001
+#define SDHC_CLOCK_SDCLK_EN            (1 << 2)
+#define SDHC_CLOCK_CHK_MASK            0x0007
+#define SDHC_CLOCK_IS_ON(x)            \
+    (((x) & SDHC_CLOCK_CHK_MASK) == SDHC_CLOCK_CHK_MASK)
+
+/* R/W Timeout Control Register 0x0 */
+#define SDHC_TIMEOUTCON                0x2E
+
+/* R/W Software Reset Register 0x0 */
+#define SDHC_SWRST                     0x2F
+#define SDHC_RESET_ALL                 0x01
+#define SDHC_RESET_CMD                 0x02
+#define SDHC_RESET_DATA                0x04
+
+/* ROC/RW1C Normal Interrupt Status Register 0x0 */
+#define SDHC_NORINTSTS                 0x30
+#define SDHC_NIS_ERR                   0x8000
+#define SDHC_NIS_CMDCMP                0x0001
+#define SDHC_NIS_TRSCMP                0x0002
+#define SDHC_NIS_BLKGAP                0x0004
+#define SDHC_NIS_DMA                   0x0008
+#define SDHC_NIS_WBUFRDY               0x0010
+#define SDHC_NIS_RBUFRDY               0x0020
+#define SDHC_NIS_INSERT                0x0040
+#define SDHC_NIS_REMOVE                0x0080
+#define SDHC_NIS_CARDINT               0x0100
+
+/* ROC/RW1C Error Interrupt Status Register 0x0 */
+#define SDHC_ERRINTSTS                 0x32
+#define SDHC_EIS_CMDTIMEOUT            0x0001
+#define SDHC_EIS_BLKGAP                0x0004
+#define SDHC_EIS_CMDIDX                0x0008
+#define SDHC_EIS_CMD12ERR              0x0100
+#define SDHC_EIS_ADMAERR               0x0200
+
+/* R/W Normal Interrupt Status Enable Register 0x0 */
+#define SDHC_NORINTSTSEN               0x34
+#define SDHC_NISEN_CMDCMP              0x0001
+#define SDHC_NISEN_TRSCMP              0x0002
+#define SDHC_NISEN_DMA                 0x0008
+#define SDHC_NISEN_WBUFRDY             0x0010
+#define SDHC_NISEN_RBUFRDY             0x0020
+#define SDHC_NISEN_INSERT              0x0040
+#define SDHC_NISEN_REMOVE              0x0080
+#define SDHC_NISEN_CARDINT             0x0100
+
+/* R/W Error Interrupt Status Enable Register 0x0 */
+#define SDHC_ERRINTSTSEN               0x36
+#define SDHC_EISEN_CMDTIMEOUT          0x0001
+#define SDHC_EISEN_BLKGAP              0x0004
+#define SDHC_EISEN_CMDIDX              0x0008
+#define SDHC_EISEN_ADMAERR             0x0200
+
+/* R/W Normal Interrupt Signal Enable Register 0x0 */
+#define SDHC_NORINTSIGEN               0x38
+#define SDHC_NORINTSIG_INSERT          (1 << 6)
+#define SDHC_NORINTSIG_REMOVE          (1 << 7)
+
+/* R/W Error Interrupt Signal Enable Register 0x0 */
+#define SDHC_ERRINTSIGEN               0x3A
+
+/* ROC Auto CMD12 error status register 0x0 */
+#define SDHC_ACMD12ERRSTS              0x3C
+
+/* HWInit Capabilities Register 0x05E80080 */
+#define SDHC_CAPAREG                   0x40
+#define SDHC_CAN_DO_DMA                0x00400000
+#define SDHC_CAN_DO_ADMA2              0x00080000
+#define SDHC_CAN_DO_ADMA1              0x00100000
+#define SDHC_64_BIT_BUS_SUPPORT        (1 << 28)
+#define SDHC_CAPAB_BLOCKSIZE(x)        (((x) >> 16) & 0x3)
+
+/* HWInit Maximum Current Capabilities Register 0x0 */
+#define SDHC_MAXCURR                   0x48
+
+/* W Force Event Auto CMD12 Error Interrupt Register 0x0000 */
+#define SDHC_FEAER                     0x50
+/* W Force Event Error Interrupt Register Error Interrupt 0x0000 */
+#define SDHC_FEERR                     0x52
+
+/* R/W ADMA Error Status Register 0x00 */
+#define SDHC_ADMAERR                   0x54
+#define SDHC_ADMAERR_LENGTH_MISMATCH   (1 << 2)
+#define SDHC_ADMAERR_STATE_ST_STOP     (0 << 0)
+#define SDHC_ADMAERR_STATE_ST_FDS      (1 << 0)
+#define SDHC_ADMAERR_STATE_ST_TFR      (3 << 0)
+#define SDHC_ADMAERR_STATE_MASK        (3 << 0)
+
+/* R/W ADMA System Address Register 0x00 */
+#define SDHC_ADMASYSADDR               0x58
+#define SDHC_ADMA_ATTR_SET_LEN         (1 << 4)
+#define SDHC_ADMA_ATTR_ACT_TRAN        (1 << 5)
+#define SDHC_ADMA_ATTR_ACT_LINK        (3 << 4)
+#define SDHC_ADMA_ATTR_INT             (1 << 2)
+#define SDHC_ADMA_ATTR_END             (1 << 1)
+#define SDHC_ADMA_ATTR_VALID           (1 << 0)
+#define SDHC_ADMA_ATTR_ACT_MASK        ((1 << 4)|(1 << 5))
+
+/* Slot interrupt status */
+#define SDHC_SLOT_INT_STATUS            0xFC
+
+/* HWInit Host Controller Version Register 0x0401 */
+#define SDHC_HCVER                      0xFE
+#define SD_HOST_SPECv2_VERS             0x2401
+
+#define SDHC_REGISTERS_MAP_SIZE         0x100
+#define SDHC_INSERTION_DELAY            (get_ticks_per_sec())
+#define SDHC_TRANSFER_DELAY             100
+#define SDHC_ADMA_DESCS_PER_DELAY       5
+#define SDHC_CMD_RESPONSE               (3 << 0)
+
+enum {
+    sdhc_not_stopped = 0, /* normal SDHC state */
+    sdhc_gap_read   = 1,  /* SDHC stopped at block gap during read operation */
+    sdhc_gap_write  = 2   /* SDHC stopped at block gap during write operation */
+};
+
+/* SD/MMC host controller state */
+typedef struct SDHCIState {
+    SysBusDevice busdev;
+    SDState *card;
+    MemoryRegion iomem;
+
+    QEMUTimer *insert_timer;       /* timer for 'changing' sd card. */
+    QEMUTimer *transfer_timer;
+    qemu_irq eject_cb;
+    qemu_irq ro_cb;
+    qemu_irq irq;
+
+    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  hostctl;      /* 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 */
+    uint64_t admasysaddr;  /* ADMA System Address Register */
+
+    uint32_t capareg;      /* Capabilities Register */
+    uint32_t maxcurr;      /* Maximum Current Capabilities 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 */
+    /* 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 */
+} SDHCIState;
+
+typedef struct SDHCIClass {
+    SysBusDeviceClass busdev_class;
+
+    void (*reset)(SDHCIState *s);
+    uint32_t (*mem_read)(SDHCIState *s, unsigned int offset, unsigned size);
+    void (*mem_write)(SDHCIState *s, unsigned int offset, uint32_t value,
+            unsigned size);
+    void (*send_command)(SDHCIState *s);
+    bool (*can_issue_command)(SDHCIState *s);
+    void (*data_transfer)(SDHCIState *s);
+    void (*end_data_transfer)(SDHCIState *s);
+    void (*do_sdma_single)(SDHCIState *s);
+    void (*do_sdma_multi)(SDHCIState *s);
+    void (*do_adma)(SDHCIState *s);
+    void (*read_block_from_card)(SDHCIState *s);
+    void (*write_block_to_card)(SDHCIState *s);
+    uint32_t (*bdata_read)(SDHCIState *s, unsigned size);
+    void (*bdata_write)(SDHCIState *s, uint32_t value, unsigned size);
+} SDHCIClass;
+
+extern const VMStateDescription sdhci_vmstate;
+
+#define TYPE_SDHCI            "generic-sdhci"
+#define SDHCI(obj)            \
+     OBJECT_CHECK(SDHCIState, (obj), TYPE_SDHCI)
+#define SDHCI_CLASS(klass)    \
+     OBJECT_CLASS_CHECK(SDHCIClass, (klass), TYPE_SDHCI)
+#define SDHCI_GET_CLASS(obj)  \
+     OBJECT_GET_CLASS(SDHCIClass, (obj), TYPE_SDHCI)
+
+#endif /* SDHCI_H */