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authorPaolo Bonzini <pbonzini@redhat.com>2013-03-01 13:59:19 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2013-04-08 18:13:12 +0200
commit49ab747f668f421138d5b40d83fa279c4c5e278d (patch)
tree943225a04eac885aed038731adf058f2250a2f40 /hw/sd
parentce3b494cb504f96992f2d37ebc8f56deed202b06 (diff)
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hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, moving them to subdirectories of hw/. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/sd')
-rw-r--r--hw/sd/Makefile.objs4
-rw-r--r--hw/sd/pl181.c515
-rw-r--r--hw/sd/sd.c1764
-rw-r--r--hw/sd/sdhci.c1300
-rw-r--r--hw/sd/ssi-sd.c274
5 files changed, 3857 insertions, 0 deletions
diff --git a/hw/sd/Makefile.objs b/hw/sd/Makefile.objs
index e69de29..8acce02 100644
--- a/hw/sd/Makefile.objs
+++ b/hw/sd/Makefile.objs
@@ -0,0 +1,4 @@
+common-obj-$(CONFIG_PL181) += pl181.o
+common-obj-$(CONFIG_SSI_SD) += ssi-sd.o
+common-obj-$(CONFIG_SD) += sd.o
+common-obj-$(CONFIG_SDHCI) += sdhci.o
diff --git a/hw/sd/pl181.c b/hw/sd/pl181.c
new file mode 100644
index 0000000..2527296
--- /dev/null
+++ b/hw/sd/pl181.c
@@ -0,0 +1,515 @@
+/*
+ * Arm PrimeCell PL181 MultiMedia Card Interface
+ *
+ * Copyright (c) 2007 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licensed under the GPL.
+ */
+
+#include "sysemu/blockdev.h"
+#include "hw/sysbus.h"
+#include "hw/sd.h"
+
+//#define DEBUG_PL181 1
+
+#ifdef DEBUG_PL181
+#define DPRINTF(fmt, ...) \
+do { printf("pl181: " fmt , ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) do {} while(0)
+#endif
+
+#define PL181_FIFO_LEN 16
+
+typedef struct {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
+ SDState *card;
+ uint32_t clock;
+ uint32_t power;
+ uint32_t cmdarg;
+ uint32_t cmd;
+ uint32_t datatimer;
+ uint32_t datalength;
+ uint32_t respcmd;
+ uint32_t response[4];
+ uint32_t datactrl;
+ uint32_t datacnt;
+ uint32_t status;
+ uint32_t mask[2];
+ int32_t fifo_pos;
+ int32_t fifo_len;
+ /* The linux 2.6.21 driver is buggy, and misbehaves if new data arrives
+ while it is reading the FIFO. We hack around this be defering
+ subsequent transfers until after the driver polls the status word.
+ http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=4446/1
+ */
+ int32_t linux_hack;
+ uint32_t fifo[PL181_FIFO_LEN];
+ qemu_irq irq[2];
+ /* GPIO outputs for 'card is readonly' and 'card inserted' */
+ qemu_irq cardstatus[2];
+} pl181_state;
+
+static const VMStateDescription vmstate_pl181 = {
+ .name = "pl181",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(clock, pl181_state),
+ VMSTATE_UINT32(power, pl181_state),
+ VMSTATE_UINT32(cmdarg, pl181_state),
+ VMSTATE_UINT32(cmd, pl181_state),
+ VMSTATE_UINT32(datatimer, pl181_state),
+ VMSTATE_UINT32(datalength, pl181_state),
+ VMSTATE_UINT32(respcmd, pl181_state),
+ VMSTATE_UINT32_ARRAY(response, pl181_state, 4),
+ VMSTATE_UINT32(datactrl, pl181_state),
+ VMSTATE_UINT32(datacnt, pl181_state),
+ VMSTATE_UINT32(status, pl181_state),
+ VMSTATE_UINT32_ARRAY(mask, pl181_state, 2),
+ VMSTATE_INT32(fifo_pos, pl181_state),
+ VMSTATE_INT32(fifo_len, pl181_state),
+ VMSTATE_INT32(linux_hack, pl181_state),
+ VMSTATE_UINT32_ARRAY(fifo, pl181_state, PL181_FIFO_LEN),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+#define PL181_CMD_INDEX 0x3f
+#define PL181_CMD_RESPONSE (1 << 6)
+#define PL181_CMD_LONGRESP (1 << 7)
+#define PL181_CMD_INTERRUPT (1 << 8)
+#define PL181_CMD_PENDING (1 << 9)
+#define PL181_CMD_ENABLE (1 << 10)
+
+#define PL181_DATA_ENABLE (1 << 0)
+#define PL181_DATA_DIRECTION (1 << 1)
+#define PL181_DATA_MODE (1 << 2)
+#define PL181_DATA_DMAENABLE (1 << 3)
+
+#define PL181_STATUS_CMDCRCFAIL (1 << 0)
+#define PL181_STATUS_DATACRCFAIL (1 << 1)
+#define PL181_STATUS_CMDTIMEOUT (1 << 2)
+#define PL181_STATUS_DATATIMEOUT (1 << 3)
+#define PL181_STATUS_TXUNDERRUN (1 << 4)
+#define PL181_STATUS_RXOVERRUN (1 << 5)
+#define PL181_STATUS_CMDRESPEND (1 << 6)
+#define PL181_STATUS_CMDSENT (1 << 7)
+#define PL181_STATUS_DATAEND (1 << 8)
+#define PL181_STATUS_DATABLOCKEND (1 << 10)
+#define PL181_STATUS_CMDACTIVE (1 << 11)
+#define PL181_STATUS_TXACTIVE (1 << 12)
+#define PL181_STATUS_RXACTIVE (1 << 13)
+#define PL181_STATUS_TXFIFOHALFEMPTY (1 << 14)
+#define PL181_STATUS_RXFIFOHALFFULL (1 << 15)
+#define PL181_STATUS_TXFIFOFULL (1 << 16)
+#define PL181_STATUS_RXFIFOFULL (1 << 17)
+#define PL181_STATUS_TXFIFOEMPTY (1 << 18)
+#define PL181_STATUS_RXFIFOEMPTY (1 << 19)
+#define PL181_STATUS_TXDATAAVLBL (1 << 20)
+#define PL181_STATUS_RXDATAAVLBL (1 << 21)
+
+#define PL181_STATUS_TX_FIFO (PL181_STATUS_TXACTIVE \
+ |PL181_STATUS_TXFIFOHALFEMPTY \
+ |PL181_STATUS_TXFIFOFULL \
+ |PL181_STATUS_TXFIFOEMPTY \
+ |PL181_STATUS_TXDATAAVLBL)
+#define PL181_STATUS_RX_FIFO (PL181_STATUS_RXACTIVE \
+ |PL181_STATUS_RXFIFOHALFFULL \
+ |PL181_STATUS_RXFIFOFULL \
+ |PL181_STATUS_RXFIFOEMPTY \
+ |PL181_STATUS_RXDATAAVLBL)
+
+static const unsigned char pl181_id[] =
+{ 0x81, 0x11, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
+
+static void pl181_update(pl181_state *s)
+{
+ int i;
+ for (i = 0; i < 2; i++) {
+ qemu_set_irq(s->irq[i], (s->status & s->mask[i]) != 0);
+ }
+}
+
+static void pl181_fifo_push(pl181_state *s, uint32_t value)
+{
+ int n;
+
+ if (s->fifo_len == PL181_FIFO_LEN) {
+ fprintf(stderr, "pl181: FIFO overflow\n");
+ return;
+ }
+ n = (s->fifo_pos + s->fifo_len) & (PL181_FIFO_LEN - 1);
+ s->fifo_len++;
+ s->fifo[n] = value;
+ DPRINTF("FIFO push %08x\n", (int)value);
+}
+
+static uint32_t pl181_fifo_pop(pl181_state *s)
+{
+ uint32_t value;
+
+ if (s->fifo_len == 0) {
+ fprintf(stderr, "pl181: FIFO underflow\n");
+ return 0;
+ }
+ value = s->fifo[s->fifo_pos];
+ s->fifo_len--;
+ s->fifo_pos = (s->fifo_pos + 1) & (PL181_FIFO_LEN - 1);
+ DPRINTF("FIFO pop %08x\n", (int)value);
+ return value;
+}
+
+static void pl181_send_command(pl181_state *s)
+{
+ SDRequest request;
+ uint8_t response[16];
+ int rlen;
+
+ request.cmd = s->cmd & PL181_CMD_INDEX;
+ request.arg = s->cmdarg;
+ DPRINTF("Command %d %08x\n", request.cmd, request.arg);
+ rlen = sd_do_command(s->card, &request, response);
+ if (rlen < 0)
+ goto error;
+ if (s->cmd & PL181_CMD_RESPONSE) {
+#define RWORD(n) ((response[n] << 24) | (response[n + 1] << 16) \
+ | (response[n + 2] << 8) | response[n + 3])
+ if (rlen == 0 || (rlen == 4 && (s->cmd & PL181_CMD_LONGRESP)))
+ goto error;
+ if (rlen != 4 && rlen != 16)
+ goto error;
+ s->response[0] = RWORD(0);
+ if (rlen == 4) {
+ s->response[1] = s->response[2] = s->response[3] = 0;
+ } else {
+ s->response[1] = RWORD(4);
+ s->response[2] = RWORD(8);
+ s->response[3] = RWORD(12) & ~1;
+ }
+ DPRINTF("Response received\n");
+ s->status |= PL181_STATUS_CMDRESPEND;
+#undef RWORD
+ } else {
+ DPRINTF("Command sent\n");
+ s->status |= PL181_STATUS_CMDSENT;
+ }
+ return;
+
+error:
+ DPRINTF("Timeout\n");
+ s->status |= PL181_STATUS_CMDTIMEOUT;
+}
+
+/* Transfer data between the card and the FIFO. This is complicated by
+ the FIFO holding 32-bit words and the card taking data in single byte
+ chunks. FIFO bytes are transferred in little-endian order. */
+
+static void pl181_fifo_run(pl181_state *s)
+{
+ uint32_t bits;
+ uint32_t value = 0;
+ int n;
+ int is_read;
+
+ is_read = (s->datactrl & PL181_DATA_DIRECTION) != 0;
+ if (s->datacnt != 0 && (!is_read || sd_data_ready(s->card))
+ && !s->linux_hack) {
+ if (is_read) {
+ n = 0;
+ while (s->datacnt && s->fifo_len < PL181_FIFO_LEN) {
+ value |= (uint32_t)sd_read_data(s->card) << (n * 8);
+ s->datacnt--;
+ n++;
+ if (n == 4) {
+ pl181_fifo_push(s, value);
+ n = 0;
+ value = 0;
+ }
+ }
+ if (n != 0) {
+ pl181_fifo_push(s, value);
+ }
+ } else { /* write */
+ n = 0;
+ while (s->datacnt > 0 && (s->fifo_len > 0 || n > 0)) {
+ if (n == 0) {
+ value = pl181_fifo_pop(s);
+ n = 4;
+ }
+ n--;
+ s->datacnt--;
+ sd_write_data(s->card, value & 0xff);
+ value >>= 8;
+ }
+ }
+ }
+ s->status &= ~(PL181_STATUS_RX_FIFO | PL181_STATUS_TX_FIFO);
+ if (s->datacnt == 0) {
+ s->status |= PL181_STATUS_DATAEND;
+ /* HACK: */
+ s->status |= PL181_STATUS_DATABLOCKEND;
+ DPRINTF("Transfer Complete\n");
+ }
+ if (s->datacnt == 0 && s->fifo_len == 0) {
+ s->datactrl &= ~PL181_DATA_ENABLE;
+ DPRINTF("Data engine idle\n");
+ } else {
+ /* Update FIFO bits. */
+ bits = PL181_STATUS_TXACTIVE | PL181_STATUS_RXACTIVE;
+ if (s->fifo_len == 0) {
+ bits |= PL181_STATUS_TXFIFOEMPTY;
+ bits |= PL181_STATUS_RXFIFOEMPTY;
+ } else {
+ bits |= PL181_STATUS_TXDATAAVLBL;
+ bits |= PL181_STATUS_RXDATAAVLBL;
+ }
+ if (s->fifo_len == 16) {
+ bits |= PL181_STATUS_TXFIFOFULL;
+ bits |= PL181_STATUS_RXFIFOFULL;
+ }
+ if (s->fifo_len <= 8) {
+ bits |= PL181_STATUS_TXFIFOHALFEMPTY;
+ }
+ if (s->fifo_len >= 8) {
+ bits |= PL181_STATUS_RXFIFOHALFFULL;
+ }
+ if (s->datactrl & PL181_DATA_DIRECTION) {
+ bits &= PL181_STATUS_RX_FIFO;
+ } else {
+ bits &= PL181_STATUS_TX_FIFO;
+ }
+ s->status |= bits;
+ }
+}
+
+static uint64_t pl181_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ pl181_state *s = (pl181_state *)opaque;
+ uint32_t tmp;
+
+ if (offset >= 0xfe0 && offset < 0x1000) {
+ return pl181_id[(offset - 0xfe0) >> 2];
+ }
+ switch (offset) {
+ case 0x00: /* Power */
+ return s->power;
+ case 0x04: /* Clock */
+ return s->clock;
+ case 0x08: /* Argument */
+ return s->cmdarg;
+ case 0x0c: /* Command */
+ return s->cmd;
+ case 0x10: /* RespCmd */
+ return s->respcmd;
+ case 0x14: /* Response0 */
+ return s->response[0];
+ case 0x18: /* Response1 */
+ return s->response[1];
+ case 0x1c: /* Response2 */
+ return s->response[2];
+ case 0x20: /* Response3 */
+ return s->response[3];
+ case 0x24: /* DataTimer */
+ return s->datatimer;
+ case 0x28: /* DataLength */
+ return s->datalength;
+ case 0x2c: /* DataCtrl */
+ return s->datactrl;
+ case 0x30: /* DataCnt */
+ return s->datacnt;
+ case 0x34: /* Status */
+ tmp = s->status;
+ if (s->linux_hack) {
+ s->linux_hack = 0;
+ pl181_fifo_run(s);
+ pl181_update(s);
+ }
+ return tmp;
+ case 0x3c: /* Mask0 */
+ return s->mask[0];
+ case 0x40: /* Mask1 */
+ return s->mask[1];
+ case 0x48: /* FifoCnt */
+ /* The documentation is somewhat vague about exactly what FifoCnt
+ does. On real hardware it appears to be when decrememnted
+ when a word is transferred between the FIFO and the serial
+ data engine. DataCnt is decremented after each byte is
+ transferred between the serial engine and the card.
+ We don't emulate this level of detail, so both can be the same. */
+ tmp = (s->datacnt + 3) >> 2;
+ if (s->linux_hack) {
+ s->linux_hack = 0;
+ pl181_fifo_run(s);
+ pl181_update(s);
+ }
+ return tmp;
+ case 0x80: case 0x84: case 0x88: case 0x8c: /* FifoData */
+ case 0x90: case 0x94: case 0x98: case 0x9c:
+ case 0xa0: case 0xa4: case 0xa8: case 0xac:
+ case 0xb0: case 0xb4: case 0xb8: case 0xbc:
+ if (s->fifo_len == 0) {
+ qemu_log_mask(LOG_GUEST_ERROR, "pl181: Unexpected FIFO read\n");
+ return 0;
+ } else {
+ uint32_t value;
+ value = pl181_fifo_pop(s);
+ s->linux_hack = 1;
+ pl181_fifo_run(s);
+ pl181_update(s);
+ return value;
+ }
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "pl181_read: Bad offset %x\n", (int)offset);
+ return 0;
+ }
+}
+
+static void pl181_write(void *opaque, hwaddr offset,
+ uint64_t value, unsigned size)
+{
+ pl181_state *s = (pl181_state *)opaque;
+
+ switch (offset) {
+ case 0x00: /* Power */
+ s->power = value & 0xff;
+ break;
+ case 0x04: /* Clock */
+ s->clock = value & 0xff;
+ break;
+ case 0x08: /* Argument */
+ s->cmdarg = value;
+ break;
+ case 0x0c: /* Command */
+ s->cmd = value;
+ if (s->cmd & PL181_CMD_ENABLE) {
+ if (s->cmd & PL181_CMD_INTERRUPT) {
+ qemu_log_mask(LOG_UNIMP,
+ "pl181: Interrupt mode not implemented\n");
+ } if (s->cmd & PL181_CMD_PENDING) {
+ qemu_log_mask(LOG_UNIMP,
+ "pl181: Pending commands not implemented\n");
+ } else {
+ pl181_send_command(s);
+ pl181_fifo_run(s);
+ }
+ /* The command has completed one way or the other. */
+ s->cmd &= ~PL181_CMD_ENABLE;
+ }
+ break;
+ case 0x24: /* DataTimer */
+ s->datatimer = value;
+ break;
+ case 0x28: /* DataLength */
+ s->datalength = value & 0xffff;
+ break;
+ case 0x2c: /* DataCtrl */
+ s->datactrl = value & 0xff;
+ if (value & PL181_DATA_ENABLE) {
+ s->datacnt = s->datalength;
+ pl181_fifo_run(s);
+ }
+ break;
+ case 0x38: /* Clear */
+ s->status &= ~(value & 0x7ff);
+ break;
+ case 0x3c: /* Mask0 */
+ s->mask[0] = value;
+ break;
+ case 0x40: /* Mask1 */
+ s->mask[1] = value;
+ break;
+ case 0x80: case 0x84: case 0x88: case 0x8c: /* FifoData */
+ case 0x90: case 0x94: case 0x98: case 0x9c:
+ case 0xa0: case 0xa4: case 0xa8: case 0xac:
+ case 0xb0: case 0xb4: case 0xb8: case 0xbc:
+ if (s->datacnt == 0) {
+ qemu_log_mask(LOG_GUEST_ERROR, "pl181: Unexpected FIFO write\n");
+ } else {
+ pl181_fifo_push(s, value);
+ pl181_fifo_run(s);
+ }
+ break;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "pl181_write: Bad offset %x\n", (int)offset);
+ }
+ pl181_update(s);
+}
+
+static const MemoryRegionOps pl181_ops = {
+ .read = pl181_read,
+ .write = pl181_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static void pl181_reset(DeviceState *d)
+{
+ pl181_state *s = DO_UPCAST(pl181_state, busdev.qdev, d);
+
+ s->power = 0;
+ s->cmdarg = 0;
+ s->cmd = 0;
+ s->datatimer = 0;
+ s->datalength = 0;
+ s->respcmd = 0;
+ s->response[0] = 0;
+ s->response[1] = 0;
+ s->response[2] = 0;
+ s->response[3] = 0;
+ s->datatimer = 0;
+ s->datalength = 0;
+ s->datactrl = 0;
+ s->datacnt = 0;
+ s->status = 0;
+ s->linux_hack = 0;
+ s->mask[0] = 0;
+ s->mask[1] = 0;
+
+ /* We can assume our GPIO outputs have been wired up now */
+ sd_set_cb(s->card, s->cardstatus[0], s->cardstatus[1]);
+}
+
+static int pl181_init(SysBusDevice *dev)
+{
+ pl181_state *s = FROM_SYSBUS(pl181_state, dev);
+ DriveInfo *dinfo;
+
+ memory_region_init_io(&s->iomem, &pl181_ops, s, "pl181", 0x1000);
+ sysbus_init_mmio(dev, &s->iomem);
+ sysbus_init_irq(dev, &s->irq[0]);
+ sysbus_init_irq(dev, &s->irq[1]);
+ qdev_init_gpio_out(&s->busdev.qdev, s->cardstatus, 2);
+ dinfo = drive_get_next(IF_SD);
+ s->card = sd_init(dinfo ? dinfo->bdrv : NULL, 0);
+ return 0;
+}
+
+static void pl181_class_init(ObjectClass *klass, void *data)
+{
+ SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
+ DeviceClass *k = DEVICE_CLASS(klass);
+
+ sdc->init = pl181_init;
+ k->vmsd = &vmstate_pl181;
+ k->reset = pl181_reset;
+ k->no_user = 1;
+}
+
+static const TypeInfo pl181_info = {
+ .name = "pl181",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(pl181_state),
+ .class_init = pl181_class_init,
+};
+
+static void pl181_register_types(void)
+{
+ type_register_static(&pl181_info);
+}
+
+type_init(pl181_register_types)
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
new file mode 100644
index 0000000..66c4014
--- /dev/null
+++ b/hw/sd/sd.c
@@ -0,0 +1,1764 @@
+/*
+ * SD Memory Card emulation as defined in the "SD Memory Card Physical
+ * layer specification, Version 1.10."
+ *
+ * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
+ * Copyright (c) 2007 CodeSourcery
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "hw/hw.h"
+#include "block/block.h"
+#include "hw/sd.h"
+#include "qemu/bitmap.h"
+
+//#define DEBUG_SD 1
+
+#ifdef DEBUG_SD
+#define DPRINTF(fmt, ...) \
+do { fprintf(stderr, "SD: " fmt , ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) do {} while(0)
+#endif
+
+typedef enum {
+ sd_r0 = 0, /* no response */
+ sd_r1, /* normal response command */
+ sd_r2_i, /* CID register */
+ sd_r2_s, /* CSD register */
+ sd_r3, /* OCR register */
+ sd_r6 = 6, /* Published RCA response */
+ sd_r7, /* Operating voltage */
+ sd_r1b = -1,
+ sd_illegal = -2,
+} sd_rsp_type_t;
+
+enum SDCardModes {
+ sd_inactive,
+ sd_card_identification_mode,
+ sd_data_transfer_mode,
+};
+
+enum SDCardStates {
+ sd_inactive_state = -1,
+ sd_idle_state = 0,
+ sd_ready_state,
+ sd_identification_state,
+ sd_standby_state,
+ sd_transfer_state,
+ sd_sendingdata_state,
+ sd_receivingdata_state,
+ sd_programming_state,
+ sd_disconnect_state,
+};
+
+struct SDState {
+ uint32_t mode; /* current card mode, one of SDCardModes */
+ int32_t state; /* current card state, one of SDCardStates */
+ uint32_t ocr;
+ uint8_t scr[8];
+ uint8_t cid[16];
+ uint8_t csd[16];
+ uint16_t rca;
+ uint32_t card_status;
+ uint8_t sd_status[64];
+ uint32_t vhs;
+ bool wp_switch;
+ unsigned long *wp_groups;
+ int32_t wpgrps_size;
+ uint64_t size;
+ uint32_t blk_len;
+ uint32_t erase_start;
+ uint32_t erase_end;
+ uint8_t pwd[16];
+ uint32_t pwd_len;
+ uint8_t function_group[6];
+
+ bool spi;
+ uint8_t current_cmd;
+ /* True if we will handle the next command as an ACMD. Note that this does
+ * *not* track the APP_CMD status bit!
+ */
+ bool expecting_acmd;
+ uint32_t blk_written;
+ uint64_t data_start;
+ uint32_t data_offset;
+ uint8_t data[512];
+ qemu_irq readonly_cb;
+ qemu_irq inserted_cb;
+ BlockDriverState *bdrv;
+ uint8_t *buf;
+
+ bool enable;
+};
+
+static void sd_set_mode(SDState *sd)
+{
+ switch (sd->state) {
+ case sd_inactive_state:
+ sd->mode = sd_inactive;
+ break;
+
+ case sd_idle_state:
+ case sd_ready_state:
+ case sd_identification_state:
+ sd->mode = sd_card_identification_mode;
+ break;
+
+ case sd_standby_state:
+ case sd_transfer_state:
+ case sd_sendingdata_state:
+ case sd_receivingdata_state:
+ case sd_programming_state:
+ case sd_disconnect_state:
+ sd->mode = sd_data_transfer_mode;
+ break;
+ }
+}
+
+static const sd_cmd_type_t sd_cmd_type[64] = {
+ sd_bc, sd_none, sd_bcr, sd_bcr, sd_none, sd_none, sd_none, sd_ac,
+ sd_bcr, sd_ac, sd_ac, sd_adtc, sd_ac, sd_ac, sd_none, sd_ac,
+ sd_ac, sd_adtc, sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none,
+ sd_adtc, sd_adtc, sd_adtc, sd_adtc, sd_ac, sd_ac, sd_adtc, sd_none,
+ sd_ac, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none,
+ sd_none, sd_none, sd_bc, sd_none, sd_none, sd_none, sd_none, sd_none,
+ sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac,
+ sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none,
+};
+
+static const sd_cmd_type_t sd_acmd_type[64] = {
+ sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none,
+ sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none,
+ sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_ac,
+ sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none,
+ sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none,
+ sd_none, sd_bcr, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_none,
+ sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, sd_none, sd_none,
+ sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none,
+};
+
+static const int sd_cmd_class[64] = {
+ 0, 0, 0, 0, 0, 9, 10, 0, 0, 0, 0, 1, 0, 0, 0, 0,
+ 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 6, 6, 6, 6,
+ 5, 5, 10, 10, 10, 10, 5, 9, 9, 9, 7, 7, 7, 7, 7, 7,
+ 7, 7, 10, 7, 9, 9, 9, 8, 8, 10, 8, 8, 8, 8, 8, 8,
+};
+
+static uint8_t sd_crc7(void *message, size_t width)
+{
+ int i, bit;
+ uint8_t shift_reg = 0x00;
+ uint8_t *msg = (uint8_t *) message;
+
+ for (i = 0; i < width; i ++, msg ++)
+ for (bit = 7; bit >= 0; bit --) {
+ shift_reg <<= 1;
+ if ((shift_reg >> 7) ^ ((*msg >> bit) & 1))
+ shift_reg ^= 0x89;
+ }
+
+ return shift_reg;
+}
+
+static uint16_t sd_crc16(void *message, size_t width)
+{
+ int i, bit;
+ uint16_t shift_reg = 0x0000;
+ uint16_t *msg = (uint16_t *) message;
+ width <<= 1;
+
+ for (i = 0; i < width; i ++, msg ++)
+ for (bit = 15; bit >= 0; bit --) {
+ shift_reg <<= 1;
+ if ((shift_reg >> 15) ^ ((*msg >> bit) & 1))
+ shift_reg ^= 0x1011;
+ }
+
+ return shift_reg;
+}
+
+static void sd_set_ocr(SDState *sd)
+{
+ /* All voltages OK, card power-up OK, Standard Capacity SD Memory Card */
+ sd->ocr = 0x80ffff00;
+}
+
+static void sd_set_scr(SDState *sd)
+{
+ sd->scr[0] = 0x00; /* SCR Structure */
+ sd->scr[1] = 0x2f; /* SD Security Support */
+ sd->scr[2] = 0x00;
+ sd->scr[3] = 0x00;
+ sd->scr[4] = 0x00;
+ sd->scr[5] = 0x00;
+ sd->scr[6] = 0x00;
+ sd->scr[7] = 0x00;
+}
+
+#define MID 0xaa
+#define OID "XY"
+#define PNM "QEMU!"
+#define PRV 0x01
+#define MDT_YR 2006
+#define MDT_MON 2
+
+static void sd_set_cid(SDState *sd)
+{
+ sd->cid[0] = MID; /* Fake card manufacturer ID (MID) */
+ sd->cid[1] = OID[0]; /* OEM/Application ID (OID) */
+ sd->cid[2] = OID[1];
+ sd->cid[3] = PNM[0]; /* Fake product name (PNM) */
+ sd->cid[4] = PNM[1];
+ sd->cid[5] = PNM[2];
+ sd->cid[6] = PNM[3];
+ sd->cid[7] = PNM[4];
+ sd->cid[8] = PRV; /* Fake product revision (PRV) */
+ sd->cid[9] = 0xde; /* Fake serial number (PSN) */
+ sd->cid[10] = 0xad;
+ sd->cid[11] = 0xbe;
+ sd->cid[12] = 0xef;
+ sd->cid[13] = 0x00 | /* Manufacture date (MDT) */
+ ((MDT_YR - 2000) / 10);
+ sd->cid[14] = ((MDT_YR % 10) << 4) | MDT_MON;
+ sd->cid[15] = (sd_crc7(sd->cid, 15) << 1) | 1;
+}
+
+#define HWBLOCK_SHIFT 9 /* 512 bytes */
+#define SECTOR_SHIFT 5 /* 16 kilobytes */
+#define WPGROUP_SHIFT 7 /* 2 megs */
+#define CMULT_SHIFT 9 /* 512 times HWBLOCK_SIZE */
+#define WPGROUP_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT))
+
+static const uint8_t sd_csd_rw_mask[16] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xfe,
+};
+
+static void sd_set_csd(SDState *sd, uint64_t size)
+{
+ uint32_t csize = (size >> (CMULT_SHIFT + HWBLOCK_SHIFT)) - 1;
+ uint32_t sectsize = (1 << (SECTOR_SHIFT + 1)) - 1;
+ uint32_t wpsize = (1 << (WPGROUP_SHIFT + 1)) - 1;
+
+ if (size <= 0x40000000) { /* Standard Capacity SD */
+ sd->csd[0] = 0x00; /* CSD structure */
+ sd->csd[1] = 0x26; /* Data read access-time-1 */
+ sd->csd[2] = 0x00; /* Data read access-time-2 */
+ sd->csd[3] = 0x5a; /* Max. data transfer rate */
+ sd->csd[4] = 0x5f; /* Card Command Classes */
+ sd->csd[5] = 0x50 | /* Max. read data block length */
+ HWBLOCK_SHIFT;
+ sd->csd[6] = 0xe0 | /* Partial block for read allowed */
+ ((csize >> 10) & 0x03);
+ sd->csd[7] = 0x00 | /* Device size */
+ ((csize >> 2) & 0xff);
+ sd->csd[8] = 0x3f | /* Max. read current */
+ ((csize << 6) & 0xc0);
+ sd->csd[9] = 0xfc | /* Max. write current */
+ ((CMULT_SHIFT - 2) >> 1);
+ sd->csd[10] = 0x40 | /* Erase sector size */
+ (((CMULT_SHIFT - 2) << 7) & 0x80) | (sectsize >> 1);
+ sd->csd[11] = 0x00 | /* Write protect group size */
+ ((sectsize << 7) & 0x80) | wpsize;
+ sd->csd[12] = 0x90 | /* Write speed factor */
+ (HWBLOCK_SHIFT >> 2);
+ sd->csd[13] = 0x20 | /* Max. write data block length */
+ ((HWBLOCK_SHIFT << 6) & 0xc0);
+ sd->csd[14] = 0x00; /* File format group */
+ sd->csd[15] = (sd_crc7(sd->csd, 15) << 1) | 1;
+ } else { /* SDHC */
+ size /= 512 * 1024;
+ size -= 1;
+ sd->csd[0] = 0x40;
+ sd->csd[1] = 0x0e;
+ sd->csd[2] = 0x00;
+ sd->csd[3] = 0x32;
+ sd->csd[4] = 0x5b;
+ sd->csd[5] = 0x59;
+ sd->csd[6] = 0x00;
+ sd->csd[7] = (size >> 16) & 0xff;
+ sd->csd[8] = (size >> 8) & 0xff;
+ sd->csd[9] = (size & 0xff);
+ sd->csd[10] = 0x7f;
+ sd->csd[11] = 0x80;
+ sd->csd[12] = 0x0a;
+ sd->csd[13] = 0x40;
+ sd->csd[14] = 0x00;
+ sd->csd[15] = 0x00;
+ sd->ocr |= 1 << 30; /* High Capacity SD Memort Card */
+ }
+}
+
+static void sd_set_rca(SDState *sd)
+{
+ sd->rca += 0x4567;
+}
+
+/* Card status bits, split by clear condition:
+ * A : According to the card current state
+ * B : Always related to the previous command
+ * C : Cleared by read
+ */
+#define CARD_STATUS_A 0x02004100
+#define CARD_STATUS_B 0x00c01e00
+#define CARD_STATUS_C 0xfd39a028
+
+static void sd_set_cardstatus(SDState *sd)
+{
+ sd->card_status = 0x00000100;
+}
+
+static void sd_set_sdstatus(SDState *sd)
+{
+ memset(sd->sd_status, 0, 64);
+}
+
+static int sd_req_crc_validate(SDRequest *req)
+{
+ uint8_t buffer[5];
+ buffer[0] = 0x40 | req->cmd;
+ buffer[1] = (req->arg >> 24) & 0xff;
+ buffer[2] = (req->arg >> 16) & 0xff;
+ buffer[3] = (req->arg >> 8) & 0xff;
+ buffer[4] = (req->arg >> 0) & 0xff;
+ return 0;
+ return sd_crc7(buffer, 5) != req->crc; /* TODO */
+}
+
+static void sd_response_r1_make(SDState *sd, uint8_t *response)
+{
+ uint32_t status = sd->card_status;
+ /* Clear the "clear on read" status bits */
+ sd->card_status &= ~CARD_STATUS_C;
+
+ response[0] = (status >> 24) & 0xff;
+ response[1] = (status >> 16) & 0xff;
+ response[2] = (status >> 8) & 0xff;
+ response[3] = (status >> 0) & 0xff;
+}
+
+static void sd_response_r3_make(SDState *sd, uint8_t *response)
+{
+ response[0] = (sd->ocr >> 24) & 0xff;
+ response[1] = (sd->ocr >> 16) & 0xff;
+ response[2] = (sd->ocr >> 8) & 0xff;
+ response[3] = (sd->ocr >> 0) & 0xff;
+}
+
+static void sd_response_r6_make(SDState *sd, uint8_t *response)
+{
+ uint16_t arg;
+ uint16_t status;
+
+ arg = sd->rca;
+ status = ((sd->card_status >> 8) & 0xc000) |
+ ((sd->card_status >> 6) & 0x2000) |
+ (sd->card_status & 0x1fff);
+ sd->card_status &= ~(CARD_STATUS_C & 0xc81fff);
+
+ response[0] = (arg >> 8) & 0xff;
+ response[1] = arg & 0xff;
+ response[2] = (status >> 8) & 0xff;
+ response[3] = status & 0xff;
+}
+
+static void sd_response_r7_make(SDState *sd, uint8_t *response)
+{
+ response[0] = (sd->vhs >> 24) & 0xff;
+ response[1] = (sd->vhs >> 16) & 0xff;
+ response[2] = (sd->vhs >> 8) & 0xff;
+ response[3] = (sd->vhs >> 0) & 0xff;
+}
+
+static inline uint64_t sd_addr_to_wpnum(uint64_t addr)
+{
+ return addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT);
+}
+
+static void sd_reset(SDState *sd, BlockDriverState *bdrv)
+{
+ uint64_t size;
+ uint64_t sect;
+
+ if (bdrv) {
+ bdrv_get_geometry(bdrv, &sect);
+ } else {
+ sect = 0;
+ }
+ size = sect << 9;
+
+ sect = sd_addr_to_wpnum(size) + 1;
+
+ sd->state = sd_idle_state;
+ sd->rca = 0x0000;
+ sd_set_ocr(sd);
+ sd_set_scr(sd);
+ sd_set_cid(sd);
+ sd_set_csd(sd, size);
+ sd_set_cardstatus(sd);
+ sd_set_sdstatus(sd);
+
+ sd->bdrv = bdrv;
+
+ if (sd->wp_groups)
+ g_free(sd->wp_groups);
+ sd->wp_switch = bdrv ? bdrv_is_read_only(bdrv) : false;
+ sd->wpgrps_size = sect;
+ sd->wp_groups = bitmap_new(sd->wpgrps_size);
+ memset(sd->function_group, 0, sizeof(sd->function_group));
+ sd->erase_start = 0;
+ sd->erase_end = 0;
+ sd->size = size;
+ sd->blk_len = 0x200;
+ sd->pwd_len = 0;
+ sd->expecting_acmd = false;
+}
+
+static void sd_cardchange(void *opaque, bool load)
+{
+ SDState *sd = opaque;
+
+ qemu_set_irq(sd->inserted_cb, bdrv_is_inserted(sd->bdrv));
+ if (bdrv_is_inserted(sd->bdrv)) {
+ sd_reset(sd, sd->bdrv);
+ qemu_set_irq(sd->readonly_cb, sd->wp_switch);
+ }
+}
+
+static const BlockDevOps sd_block_ops = {
+ .change_media_cb = sd_cardchange,
+};
+
+static const VMStateDescription sd_vmstate = {
+ .name = "sd-card",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(mode, SDState),
+ VMSTATE_INT32(state, SDState),
+ VMSTATE_UINT8_ARRAY(cid, SDState, 16),
+ VMSTATE_UINT8_ARRAY(csd, SDState, 16),
+ VMSTATE_UINT16(rca, SDState),
+ VMSTATE_UINT32(card_status, SDState),
+ VMSTATE_PARTIAL_BUFFER(sd_status, SDState, 1),
+ VMSTATE_UINT32(vhs, SDState),
+ VMSTATE_BITMAP(wp_groups, SDState, 0, wpgrps_size),
+ VMSTATE_UINT32(blk_len, SDState),
+ VMSTATE_UINT32(erase_start, SDState),
+ VMSTATE_UINT32(erase_end, SDState),
+ VMSTATE_UINT8_ARRAY(pwd, SDState, 16),
+ VMSTATE_UINT32(pwd_len, SDState),
+ VMSTATE_UINT8_ARRAY(function_group, SDState, 6),
+ VMSTATE_UINT8(current_cmd, SDState),
+ VMSTATE_BOOL(expecting_acmd, SDState),
+ VMSTATE_UINT32(blk_written, SDState),
+ VMSTATE_UINT64(data_start, SDState),
+ VMSTATE_UINT32(data_offset, SDState),
+ VMSTATE_UINT8_ARRAY(data, SDState, 512),
+ VMSTATE_BUFFER_POINTER_UNSAFE(buf, SDState, 1, 512),
+ VMSTATE_BOOL(enable, SDState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+/* We do not model the chip select pin, so allow the board to select
+ whether card should be in SSI or MMC/SD mode. It is also up to the
+ board to ensure that ssi transfers only occur when the chip select
+ is asserted. */
+SDState *sd_init(BlockDriverState *bs, bool is_spi)
+{
+ SDState *sd;
+
+ sd = (SDState *) g_malloc0(sizeof(SDState));
+ sd->buf = qemu_blockalign(bs, 512);
+ sd->spi = is_spi;
+ sd->enable = true;
+ sd_reset(sd, bs);
+ if (sd->bdrv) {
+ bdrv_attach_dev_nofail(sd->bdrv, sd);
+ bdrv_set_dev_ops(sd->bdrv, &sd_block_ops, sd);
+ }
+ vmstate_register(NULL, -1, &sd_vmstate, sd);
+ return sd;
+}
+
+void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert)
+{
+ sd->readonly_cb = readonly;
+ sd->inserted_cb = insert;
+ qemu_set_irq(readonly, sd->bdrv ? bdrv_is_read_only(sd->bdrv) : 0);
+ qemu_set_irq(insert, sd->bdrv ? bdrv_is_inserted(sd->bdrv) : 0);
+}
+
+static void sd_erase(SDState *sd)
+{
+ int i;
+ uint64_t erase_start = sd->erase_start;
+ uint64_t erase_end = sd->erase_end;
+
+ if (!sd->erase_start || !sd->erase_end) {
+ sd->card_status |= ERASE_SEQ_ERROR;
+ return;
+ }
+
+ if (extract32(sd->ocr, OCR_CCS_BITN, 1)) {
+ /* High capacity memory card: erase units are 512 byte blocks */
+ erase_start *= 512;
+ erase_end *= 512;
+ }
+
+ erase_start = sd_addr_to_wpnum(erase_start);
+ erase_end = sd_addr_to_wpnum(erase_end);
+ sd->erase_start = 0;
+ sd->erase_end = 0;
+ sd->csd[14] |= 0x40;
+
+ for (i = erase_start; i <= erase_end; i++) {
+ if (test_bit(i, sd->wp_groups)) {
+ sd->card_status |= WP_ERASE_SKIP;
+ }
+ }
+}
+
+static uint32_t sd_wpbits(SDState *sd, uint64_t addr)
+{
+ uint32_t i, wpnum;
+ uint32_t ret = 0;
+
+ wpnum = sd_addr_to_wpnum(addr);
+
+ for (i = 0; i < 32; i++, wpnum++, addr += WPGROUP_SIZE) {
+ if (addr < sd->size && test_bit(wpnum, sd->wp_groups)) {
+ ret |= (1 << i);
+ }
+ }
+
+ return ret;
+}
+
+static void sd_function_switch(SDState *sd, uint32_t arg)
+{
+ int i, mode, new_func, crc;
+ mode = !!(arg & 0x80000000);
+
+ sd->data[0] = 0x00; /* Maximum current consumption */
+ sd->data[1] = 0x01;
+ sd->data[2] = 0x80; /* Supported group 6 functions */
+ sd->data[3] = 0x01;
+ sd->data[4] = 0x80; /* Supported group 5 functions */
+ sd->data[5] = 0x01;
+ sd->data[6] = 0x80; /* Supported group 4 functions */
+ sd->data[7] = 0x01;
+ sd->data[8] = 0x80; /* Supported group 3 functions */
+ sd->data[9] = 0x01;
+ sd->data[10] = 0x80; /* Supported group 2 functions */
+ sd->data[11] = 0x43;
+ sd->data[12] = 0x80; /* Supported group 1 functions */
+ sd->data[13] = 0x03;
+ for (i = 0; i < 6; i ++) {
+ new_func = (arg >> (i * 4)) & 0x0f;
+ if (mode && new_func != 0x0f)
+ sd->function_group[i] = new_func;
+ sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4);
+ }
+ memset(&sd->data[17], 0, 47);
+ crc = sd_crc16(sd->data, 64);
+ sd->data[65] = crc >> 8;
+ sd->data[66] = crc & 0xff;
+}
+
+static inline bool sd_wp_addr(SDState *sd, uint64_t addr)
+{
+ return test_bit(sd_addr_to_wpnum(addr), sd->wp_groups);
+}
+
+static void sd_lock_command(SDState *sd)
+{
+ int erase, lock, clr_pwd, set_pwd, pwd_len;
+ erase = !!(sd->data[0] & 0x08);
+ lock = sd->data[0] & 0x04;
+ clr_pwd = sd->data[0] & 0x02;
+ set_pwd = sd->data[0] & 0x01;
+
+ if (sd->blk_len > 1)
+ pwd_len = sd->data[1];
+ else
+ pwd_len = 0;
+
+ if (erase) {
+ if (!(sd->card_status & CARD_IS_LOCKED) || sd->blk_len > 1 ||
+ set_pwd || clr_pwd || lock || sd->wp_switch ||
+ (sd->csd[14] & 0x20)) {
+ sd->card_status |= LOCK_UNLOCK_FAILED;
+ return;
+ }
+ bitmap_zero(sd->wp_groups, sd->wpgrps_size);
+ sd->csd[14] &= ~0x10;
+ sd->card_status &= ~CARD_IS_LOCKED;
+ sd->pwd_len = 0;
+ /* Erasing the entire card here! */
+ fprintf(stderr, "SD: Card force-erased by CMD42\n");
+ return;
+ }
+
+ if (sd->blk_len < 2 + pwd_len ||
+ pwd_len <= sd->pwd_len ||
+ pwd_len > sd->pwd_len + 16) {
+ sd->card_status |= LOCK_UNLOCK_FAILED;
+ return;
+ }
+
+ if (sd->pwd_len && memcmp(sd->pwd, sd->data + 2, sd->pwd_len)) {
+ sd->card_status |= LOCK_UNLOCK_FAILED;
+ return;
+ }
+
+ pwd_len -= sd->pwd_len;
+ if ((pwd_len && !set_pwd) ||
+ (clr_pwd && (set_pwd || lock)) ||
+ (lock && !sd->pwd_len && !set_pwd) ||
+ (!set_pwd && !clr_pwd &&
+ (((sd->card_status & CARD_IS_LOCKED) && lock) ||
+ (!(sd->card_status & CARD_IS_LOCKED) && !lock)))) {
+ sd->card_status |= LOCK_UNLOCK_FAILED;
+ return;
+ }
+
+ if (set_pwd) {
+ memcpy(sd->pwd, sd->data + 2 + sd->pwd_len, pwd_len);
+ sd->pwd_len = pwd_len;
+ }
+
+ if (clr_pwd) {
+ sd->pwd_len = 0;
+ }
+
+ if (lock)
+ sd->card_status |= CARD_IS_LOCKED;
+ else
+ sd->card_status &= ~CARD_IS_LOCKED;
+}
+
+static sd_rsp_type_t sd_normal_command(SDState *sd,
+ SDRequest req)
+{
+ uint32_t rca = 0x0000;
+ uint64_t addr = (sd->ocr & (1 << 30)) ? (uint64_t) req.arg << 9 : req.arg;
+
+ /* Not interpreting this as an app command */
+ sd->card_status &= ~APP_CMD;
+
+ if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc)
+ rca = req.arg >> 16;
+
+ DPRINTF("CMD%d 0x%08x state %d\n", req.cmd, req.arg, sd->state);
+ switch (req.cmd) {
+ /* Basic commands (Class 0 and Class 1) */
+ case 0: /* CMD0: GO_IDLE_STATE */
+ switch (sd->state) {
+ case sd_inactive_state:
+ return sd->spi ? sd_r1 : sd_r0;
+
+ default:
+ sd->state = sd_idle_state;
+ sd_reset(sd, sd->bdrv);
+ return sd->spi ? sd_r1 : sd_r0;
+ }
+ break;
+
+ case 1: /* CMD1: SEND_OP_CMD */
+ if (!sd->spi)
+ goto bad_cmd;
+
+ sd->state = sd_transfer_state;
+ return sd_r1;
+
+ case 2: /* CMD2: ALL_SEND_CID */
+ if (sd->spi)
+ goto bad_cmd;
+ switch (sd->state) {
+ case sd_ready_state:
+ sd->state = sd_identification_state;
+ return sd_r2_i;
+
+ default:
+ break;
+ }
+ break;
+
+ case 3: /* CMD3: SEND_RELATIVE_ADDR */
+ if (sd->spi)
+ goto bad_cmd;
+ switch (sd->state) {
+ case sd_identification_state:
+ case sd_standby_state:
+ sd->state = sd_standby_state;
+ sd_set_rca(sd);
+ return sd_r6;
+
+ default:
+ break;
+ }
+ break;
+
+ case 4: /* CMD4: SEND_DSR */
+ if (sd->spi)
+ goto bad_cmd;
+ switch (sd->state) {
+ case sd_standby_state:
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case 5: /* CMD5: reserved for SDIO cards */
+ return sd_illegal;
+
+ case 6: /* CMD6: SWITCH_FUNCTION */
+ if (sd->spi)
+ goto bad_cmd;
+ switch (sd->mode) {
+ case sd_data_transfer_mode:
+ sd_function_switch(sd, req.arg);
+ sd->state = sd_sendingdata_state;
+ sd->data_start = 0;
+ sd->data_offset = 0;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 7: /* CMD7: SELECT/DESELECT_CARD */
+ if (sd->spi)
+ goto bad_cmd;
+ switch (sd->state) {
+ case sd_standby_state:
+ if (sd->rca != rca)
+ return sd_r0;
+
+ sd->state = sd_transfer_state;
+ return sd_r1b;
+
+ case sd_transfer_state:
+ case sd_sendingdata_state:
+ if (sd->rca == rca)
+ break;
+
+ sd->state = sd_standby_state;
+ return sd_r1b;
+
+ case sd_disconnect_state:
+ if (sd->rca != rca)
+ return sd_r0;
+
+ sd->state = sd_programming_state;
+ return sd_r1b;
+
+ case sd_programming_state:
+ if (sd->rca == rca)
+ break;
+
+ sd->state = sd_disconnect_state;
+ return sd_r1b;
+
+ default:
+ break;
+ }
+ break;
+
+ case 8: /* CMD8: SEND_IF_COND */
+ /* Physical Layer Specification Version 2.00 command */
+ switch (sd->state) {
+ case sd_idle_state:
+ sd->vhs = 0;
+
+ /* No response if not exactly one VHS bit is set. */
+ if (!(req.arg >> 8) || (req.arg >> ffs(req.arg & ~0xff)))
+ return sd->spi ? sd_r7 : sd_r0;
+
+ /* Accept. */
+ sd->vhs = req.arg;
+ return sd_r7;
+
+ default:
+ break;
+ }
+ break;
+
+ case 9: /* CMD9: SEND_CSD */
+ switch (sd->state) {
+ case sd_standby_state:
+ if (sd->rca != rca)
+ return sd_r0;
+
+ return sd_r2_s;
+
+ case sd_transfer_state:
+ if (!sd->spi)
+ break;
+ sd->state = sd_sendingdata_state;
+ memcpy(sd->data, sd->csd, 16);
+ sd->data_start = addr;
+ sd->data_offset = 0;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 10: /* CMD10: SEND_CID */
+ switch (sd->state) {
+ case sd_standby_state:
+ if (sd->rca != rca)
+ return sd_r0;
+
+ return sd_r2_i;
+
+ case sd_transfer_state:
+ if (!sd->spi)
+ break;
+ sd->state = sd_sendingdata_state;
+ memcpy(sd->data, sd->cid, 16);
+ sd->data_start = addr;
+ sd->data_offset = 0;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 11: /* CMD11: READ_DAT_UNTIL_STOP */
+ if (sd->spi)
+ goto bad_cmd;
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->state = sd_sendingdata_state;
+ sd->data_start = req.arg;
+ sd->data_offset = 0;
+
+ if (sd->data_start + sd->blk_len > sd->size)
+ sd->card_status |= ADDRESS_ERROR;
+ return sd_r0;
+
+ default:
+ break;
+ }
+ break;
+
+ case 12: /* CMD12: STOP_TRANSMISSION */
+ switch (sd->state) {
+ case sd_sendingdata_state:
+ sd->state = sd_transfer_state;
+ return sd_r1b;
+
+ case sd_receivingdata_state:
+ sd->state = sd_programming_state;
+ /* Bzzzzzzztt .... Operation complete. */
+ sd->state = sd_transfer_state;
+ return sd_r1b;
+
+ default:
+ break;
+ }
+ break;
+
+ case 13: /* CMD13: SEND_STATUS */
+ switch (sd->mode) {
+ case sd_data_transfer_mode:
+ if (sd->rca != rca)
+ return sd_r0;
+
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 15: /* CMD15: GO_INACTIVE_STATE */
+ if (sd->spi)
+ goto bad_cmd;
+ switch (sd->mode) {
+ case sd_data_transfer_mode:
+ if (sd->rca != rca)
+ return sd_r0;
+
+ sd->state = sd_inactive_state;
+ return sd_r0;
+
+ default:
+ break;
+ }
+ break;
+
+ /* Block read commands (Classs 2) */
+ case 16: /* CMD16: SET_BLOCKLEN */
+ switch (sd->state) {
+ case sd_transfer_state:
+ if (req.arg > (1 << HWBLOCK_SHIFT))
+ sd->card_status |= BLOCK_LEN_ERROR;
+ else
+ sd->blk_len = req.arg;
+
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 17: /* CMD17: READ_SINGLE_BLOCK */
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->state = sd_sendingdata_state;
+ sd->data_start = addr;
+ sd->data_offset = 0;
+
+ if (sd->data_start + sd->blk_len > sd->size)
+ sd->card_status |= ADDRESS_ERROR;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 18: /* CMD18: READ_MULTIPLE_BLOCK */
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->state = sd_sendingdata_state;
+ sd->data_start = addr;
+ sd->data_offset = 0;
+
+ if (sd->data_start + sd->blk_len > sd->size)
+ sd->card_status |= ADDRESS_ERROR;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ /* Block write commands (Class 4) */
+ case 24: /* CMD24: WRITE_SINGLE_BLOCK */
+ if (sd->spi)
+ goto unimplemented_cmd;
+ switch (sd->state) {
+ case sd_transfer_state:
+ /* Writing in SPI mode not implemented. */
+ if (sd->spi)
+ break;
+ sd->state = sd_receivingdata_state;
+ sd->data_start = addr;
+ sd->data_offset = 0;
+ sd->blk_written = 0;
+
+ if (sd->data_start + sd->blk_len > sd->size)
+ sd->card_status |= ADDRESS_ERROR;
+ if (sd_wp_addr(sd, sd->data_start))
+ sd->card_status |= WP_VIOLATION;
+ if (sd->csd[14] & 0x30)
+ sd->card_status |= WP_VIOLATION;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */
+ if (sd->spi)
+ goto unimplemented_cmd;
+ switch (sd->state) {
+ case sd_transfer_state:
+ /* Writing in SPI mode not implemented. */
+ if (sd->spi)
+ break;
+ sd->state = sd_receivingdata_state;
+ sd->data_start = addr;
+ sd->data_offset = 0;
+ sd->blk_written = 0;
+
+ if (sd->data_start + sd->blk_len > sd->size)
+ sd->card_status |= ADDRESS_ERROR;
+ if (sd_wp_addr(sd, sd->data_start))
+ sd->card_status |= WP_VIOLATION;
+ if (sd->csd[14] & 0x30)
+ sd->card_status |= WP_VIOLATION;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 26: /* CMD26: PROGRAM_CID */
+ if (sd->spi)
+ goto bad_cmd;
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->state = sd_receivingdata_state;
+ sd->data_start = 0;
+ sd->data_offset = 0;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 27: /* CMD27: PROGRAM_CSD */
+ if (sd->spi)
+ goto unimplemented_cmd;
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->state = sd_receivingdata_state;
+ sd->data_start = 0;
+ sd->data_offset = 0;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ /* Write protection (Class 6) */
+ case 28: /* CMD28: SET_WRITE_PROT */
+ switch (sd->state) {
+ case sd_transfer_state:
+ if (addr >= sd->size) {
+ sd->card_status |= ADDRESS_ERROR;
+ return sd_r1b;
+ }
+
+ sd->state = sd_programming_state;
+ set_bit(sd_addr_to_wpnum(addr), sd->wp_groups);
+ /* Bzzzzzzztt .... Operation complete. */
+ sd->state = sd_transfer_state;
+ return sd_r1b;
+
+ default:
+ break;
+ }
+ break;
+
+ case 29: /* CMD29: CLR_WRITE_PROT */
+ switch (sd->state) {
+ case sd_transfer_state:
+ if (addr >= sd->size) {
+ sd->card_status |= ADDRESS_ERROR;
+ return sd_r1b;
+ }
+
+ sd->state = sd_programming_state;
+ clear_bit(sd_addr_to_wpnum(addr), sd->wp_groups);
+ /* Bzzzzzzztt .... Operation complete. */
+ sd->state = sd_transfer_state;
+ return sd_r1b;
+
+ default:
+ break;
+ }
+ break;
+
+ case 30: /* CMD30: SEND_WRITE_PROT */
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->state = sd_sendingdata_state;
+ *(uint32_t *) sd->data = sd_wpbits(sd, req.arg);
+ sd->data_start = addr;
+ sd->data_offset = 0;
+ return sd_r1b;
+
+ default:
+ break;
+ }
+ break;
+
+ /* Erase commands (Class 5) */
+ case 32: /* CMD32: ERASE_WR_BLK_START */
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->erase_start = req.arg;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 33: /* CMD33: ERASE_WR_BLK_END */
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->erase_end = req.arg;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 38: /* CMD38: ERASE */
+ switch (sd->state) {
+ case sd_transfer_state:
+ if (sd->csd[14] & 0x30) {
+ sd->card_status |= WP_VIOLATION;
+ return sd_r1b;
+ }
+
+ sd->state = sd_programming_state;
+ sd_erase(sd);
+ /* Bzzzzzzztt .... Operation complete. */
+ sd->state = sd_transfer_state;
+ return sd_r1b;
+
+ default:
+ break;
+ }
+ break;
+
+ /* Lock card commands (Class 7) */
+ case 42: /* CMD42: LOCK_UNLOCK */
+ if (sd->spi)
+ goto unimplemented_cmd;
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->state = sd_receivingdata_state;
+ sd->data_start = 0;
+ sd->data_offset = 0;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 52:
+ case 53:
+ /* CMD52, CMD53: reserved for SDIO cards
+ * (see the SDIO Simplified Specification V2.0)
+ * Handle as illegal command but do not complain
+ * on stderr, as some OSes may use these in their
+ * probing for presence of an SDIO card.
+ */
+ return sd_illegal;
+
+ /* Application specific commands (Class 8) */
+ case 55: /* CMD55: APP_CMD */
+ if (sd->rca != rca)
+ return sd_r0;
+
+ sd->expecting_acmd = true;
+ sd->card_status |= APP_CMD;
+ return sd_r1;
+
+ case 56: /* CMD56: GEN_CMD */
+ fprintf(stderr, "SD: GEN_CMD 0x%08x\n", req.arg);
+
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->data_offset = 0;
+ if (req.arg & 1)
+ sd->state = sd_sendingdata_state;
+ else
+ sd->state = sd_receivingdata_state;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ default:
+ bad_cmd:
+ fprintf(stderr, "SD: Unknown CMD%i\n", req.cmd);
+ return sd_illegal;
+
+ unimplemented_cmd:
+ /* Commands that are recognised but not yet implemented in SPI mode. */
+ fprintf(stderr, "SD: CMD%i not implemented in SPI mode\n", req.cmd);
+ return sd_illegal;
+ }
+
+ fprintf(stderr, "SD: CMD%i in a wrong state\n", req.cmd);
+ return sd_illegal;
+}
+
+static sd_rsp_type_t sd_app_command(SDState *sd,
+ SDRequest req)
+{
+ DPRINTF("ACMD%d 0x%08x\n", req.cmd, req.arg);
+ sd->card_status |= APP_CMD;
+ switch (req.cmd) {
+ case 6: /* ACMD6: SET_BUS_WIDTH */
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->sd_status[0] &= 0x3f;
+ sd->sd_status[0] |= (req.arg & 0x03) << 6;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 13: /* ACMD13: SD_STATUS */
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->state = sd_sendingdata_state;
+ sd->data_start = 0;
+ sd->data_offset = 0;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */
+ switch (sd->state) {
+ case sd_transfer_state:
+ *(uint32_t *) sd->data = sd->blk_written;
+
+ sd->state = sd_sendingdata_state;
+ sd->data_start = 0;
+ sd->data_offset = 0;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 23: /* ACMD23: SET_WR_BLK_ERASE_COUNT */
+ switch (sd->state) {
+ case sd_transfer_state:
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 41: /* ACMD41: SD_APP_OP_COND */
+ if (sd->spi) {
+ /* SEND_OP_CMD */
+ sd->state = sd_transfer_state;
+ return sd_r1;
+ }
+ switch (sd->state) {
+ case sd_idle_state:
+ /* We accept any voltage. 10000 V is nothing. */
+ if (req.arg)
+ sd->state = sd_ready_state;
+
+ return sd_r3;
+
+ default:
+ break;
+ }
+ break;
+
+ case 42: /* ACMD42: SET_CLR_CARD_DETECT */
+ switch (sd->state) {
+ case sd_transfer_state:
+ /* Bringing in the 50KOhm pull-up resistor... Done. */
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ case 51: /* ACMD51: SEND_SCR */
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->state = sd_sendingdata_state;
+ sd->data_start = 0;
+ sd->data_offset = 0;
+ return sd_r1;
+
+ default:
+ break;
+ }
+ break;
+
+ default:
+ /* Fall back to standard commands. */
+ return sd_normal_command(sd, req);
+ }
+
+ fprintf(stderr, "SD: ACMD%i in a wrong state\n", req.cmd);
+ return sd_illegal;
+}
+
+static int cmd_valid_while_locked(SDState *sd, SDRequest *req)
+{
+ /* Valid commands in locked state:
+ * basic class (0)
+ * lock card class (7)
+ * CMD16
+ * implicitly, the ACMD prefix CMD55
+ * ACMD41 and ACMD42
+ * Anything else provokes an "illegal command" response.
+ */
+ if (sd->expecting_acmd) {
+ return req->cmd == 41 || req->cmd == 42;
+ }
+ if (req->cmd == 16 || req->cmd == 55) {
+ return 1;
+ }
+ return sd_cmd_class[req->cmd] == 0 || sd_cmd_class[req->cmd] == 7;
+}
+
+int sd_do_command(SDState *sd, SDRequest *req,
+ uint8_t *response) {
+ int last_state;
+ sd_rsp_type_t rtype;
+ int rsplen;
+
+ if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) {
+ return 0;
+ }
+
+ if (sd_req_crc_validate(req)) {
+ sd->card_status |= COM_CRC_ERROR;
+ rtype = sd_illegal;
+ goto send_response;
+ }
+
+ if (sd->card_status & CARD_IS_LOCKED) {
+ if (!cmd_valid_while_locked(sd, req)) {
+ sd->card_status |= ILLEGAL_COMMAND;
+ sd->expecting_acmd = false;
+ fprintf(stderr, "SD: Card is locked\n");
+ rtype = sd_illegal;
+ goto send_response;
+ }
+ }
+
+ last_state = sd->state;
+ sd_set_mode(sd);
+
+ if (sd->expecting_acmd) {
+ sd->expecting_acmd = false;
+ rtype = sd_app_command(sd, *req);
+ } else {
+ rtype = sd_normal_command(sd, *req);
+ }
+
+ if (rtype == sd_illegal) {
+ sd->card_status |= ILLEGAL_COMMAND;
+ } else {
+ /* Valid command, we can update the 'state before command' bits.
+ * (Do this now so they appear in r1 responses.)
+ */
+ sd->current_cmd = req->cmd;
+ sd->card_status &= ~CURRENT_STATE;
+ sd->card_status |= (last_state << 9);
+ }
+
+send_response:
+ switch (rtype) {
+ case sd_r1:
+ case sd_r1b:
+ sd_response_r1_make(sd, response);
+ rsplen = 4;
+ break;
+
+ case sd_r2_i:
+ memcpy(response, sd->cid, sizeof(sd->cid));
+ rsplen = 16;
+ break;
+
+ case sd_r2_s:
+ memcpy(response, sd->csd, sizeof(sd->csd));
+ rsplen = 16;
+ break;
+
+ case sd_r3:
+ sd_response_r3_make(sd, response);
+ rsplen = 4;
+ break;
+
+ case sd_r6:
+ sd_response_r6_make(sd, response);
+ rsplen = 4;
+ break;
+
+ case sd_r7:
+ sd_response_r7_make(sd, response);
+ rsplen = 4;
+ break;
+
+ case sd_r0:
+ case sd_illegal:
+ default:
+ rsplen = 0;
+ break;
+ }
+
+ if (rtype != sd_illegal) {
+ /* Clear the "clear on valid command" status bits now we've
+ * sent any response
+ */
+ sd->card_status &= ~CARD_STATUS_B;
+ }
+
+#ifdef DEBUG_SD
+ if (rsplen) {
+ int i;
+ DPRINTF("Response:");
+ for (i = 0; i < rsplen; i++)
+ fprintf(stderr, " %02x", response[i]);
+ fprintf(stderr, " state %d\n", sd->state);
+ } else {
+ DPRINTF("No response %d\n", sd->state);
+ }
+#endif
+
+ return rsplen;
+}
+
+static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len)
+{
+ uint64_t end = addr + len;
+
+ DPRINTF("sd_blk_read: addr = 0x%08llx, len = %d\n",
+ (unsigned long long) addr, len);
+ if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) < 0) {
+ fprintf(stderr, "sd_blk_read: read error on host side\n");
+ return;
+ }
+
+ if (end > (addr & ~511) + 512) {
+ memcpy(sd->data, sd->buf + (addr & 511), 512 - (addr & 511));
+
+ if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) < 0) {
+ fprintf(stderr, "sd_blk_read: read error on host side\n");
+ return;
+ }
+ memcpy(sd->data + 512 - (addr & 511), sd->buf, end & 511);
+ } else
+ memcpy(sd->data, sd->buf + (addr & 511), len);
+}
+
+static void sd_blk_write(SDState *sd, uint64_t addr, uint32_t len)
+{
+ uint64_t end = addr + len;
+
+ if ((addr & 511) || len < 512)
+ if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) < 0) {
+ fprintf(stderr, "sd_blk_write: read error on host side\n");
+ return;
+ }
+
+ if (end > (addr & ~511) + 512) {
+ memcpy(sd->buf + (addr & 511), sd->data, 512 - (addr & 511));
+ if (bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) < 0) {
+ fprintf(stderr, "sd_blk_write: write error on host side\n");
+ return;
+ }
+
+ if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) < 0) {
+ fprintf(stderr, "sd_blk_write: read error on host side\n");
+ return;
+ }
+ memcpy(sd->buf, sd->data + 512 - (addr & 511), end & 511);
+ if (bdrv_write(sd->bdrv, end >> 9, sd->buf, 1) < 0) {
+ fprintf(stderr, "sd_blk_write: write error on host side\n");
+ }
+ } else {
+ memcpy(sd->buf + (addr & 511), sd->data, len);
+ if (!sd->bdrv || bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) < 0) {
+ fprintf(stderr, "sd_blk_write: write error on host side\n");
+ }
+ }
+}
+
+#define BLK_READ_BLOCK(a, len) sd_blk_read(sd, a, len)
+#define BLK_WRITE_BLOCK(a, len) sd_blk_write(sd, a, len)
+#define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len)
+#define APP_WRITE_BLOCK(a, len)
+
+void sd_write_data(SDState *sd, uint8_t value)
+{
+ int i;
+
+ if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable)
+ return;
+
+ if (sd->state != sd_receivingdata_state) {
+ fprintf(stderr, "sd_write_data: not in Receiving-Data state\n");
+ return;
+ }
+
+ if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
+ return;
+
+ switch (sd->current_cmd) {
+ case 24: /* CMD24: WRITE_SINGLE_BLOCK */
+ sd->data[sd->data_offset ++] = value;
+ if (sd->data_offset >= sd->blk_len) {
+ /* TODO: Check CRC before committing */
+ sd->state = sd_programming_state;
+ BLK_WRITE_BLOCK(sd->data_start, sd->data_offset);
+ sd->blk_written ++;
+ sd->csd[14] |= 0x40;
+ /* Bzzzzzzztt .... Operation complete. */
+ sd->state = sd_transfer_state;
+ }
+ break;
+
+ case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */
+ if (sd->data_offset == 0) {
+ /* Start of the block - lets check the address is valid */
+ if (sd->data_start + sd->blk_len > sd->size) {
+ sd->card_status |= ADDRESS_ERROR;
+ break;
+ }
+ if (sd_wp_addr(sd, sd->data_start)) {
+ sd->card_status |= WP_VIOLATION;
+ break;
+ }
+ }
+ sd->data[sd->data_offset++] = value;
+ if (sd->data_offset >= sd->blk_len) {
+ /* TODO: Check CRC before committing */
+ sd->state = sd_programming_state;
+ BLK_WRITE_BLOCK(sd->data_start, sd->data_offset);
+ sd->blk_written++;
+ sd->data_start += sd->blk_len;
+ sd->data_offset = 0;
+ sd->csd[14] |= 0x40;
+
+ /* Bzzzzzzztt .... Operation complete. */
+ sd->state = sd_receivingdata_state;
+ }
+ break;
+
+ case 26: /* CMD26: PROGRAM_CID */
+ sd->data[sd->data_offset ++] = value;
+ if (sd->data_offset >= sizeof(sd->cid)) {
+ /* TODO: Check CRC before committing */
+ sd->state = sd_programming_state;
+ for (i = 0; i < sizeof(sd->cid); i ++)
+ if ((sd->cid[i] | 0x00) != sd->data[i])
+ sd->card_status |= CID_CSD_OVERWRITE;
+
+ if (!(sd->card_status & CID_CSD_OVERWRITE))
+ for (i = 0; i < sizeof(sd->cid); i ++) {
+ sd->cid[i] |= 0x00;
+ sd->cid[i] &= sd->data[i];
+ }
+ /* Bzzzzzzztt .... Operation complete. */
+ sd->state = sd_transfer_state;
+ }
+ break;
+
+ case 27: /* CMD27: PROGRAM_CSD */
+ sd->data[sd->data_offset ++] = value;
+ if (sd->data_offset >= sizeof(sd->csd)) {
+ /* TODO: Check CRC before committing */
+ sd->state = sd_programming_state;
+ for (i = 0; i < sizeof(sd->csd); i ++)
+ if ((sd->csd[i] | sd_csd_rw_mask[i]) !=
+ (sd->data[i] | sd_csd_rw_mask[i]))
+ sd->card_status |= CID_CSD_OVERWRITE;
+
+ /* Copy flag (OTP) & Permanent write protect */
+ if (sd->csd[14] & ~sd->data[14] & 0x60)
+ sd->card_status |= CID_CSD_OVERWRITE;
+
+ if (!(sd->card_status & CID_CSD_OVERWRITE))
+ for (i = 0; i < sizeof(sd->csd); i ++) {
+ sd->csd[i] |= sd_csd_rw_mask[i];
+ sd->csd[i] &= sd->data[i];
+ }
+ /* Bzzzzzzztt .... Operation complete. */
+ sd->state = sd_transfer_state;
+ }
+ break;
+
+ case 42: /* CMD42: LOCK_UNLOCK */
+ sd->data[sd->data_offset ++] = value;
+ if (sd->data_offset >= sd->blk_len) {
+ /* TODO: Check CRC before committing */
+ sd->state = sd_programming_state;
+ sd_lock_command(sd);
+ /* Bzzzzzzztt .... Operation complete. */
+ sd->state = sd_transfer_state;
+ }
+ break;
+
+ case 56: /* CMD56: GEN_CMD */
+ sd->data[sd->data_offset ++] = value;
+ if (sd->data_offset >= sd->blk_len) {
+ APP_WRITE_BLOCK(sd->data_start, sd->data_offset);
+ sd->state = sd_transfer_state;
+ }
+ break;
+
+ default:
+ fprintf(stderr, "sd_write_data: unknown command\n");
+ break;
+ }
+}
+
+uint8_t sd_read_data(SDState *sd)
+{
+ /* TODO: Append CRCs */
+ uint8_t ret;
+ int io_len;
+
+ if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable)
+ return 0x00;
+
+ if (sd->state != sd_sendingdata_state) {
+ fprintf(stderr, "sd_read_data: not in Sending-Data state\n");
+ return 0x00;
+ }
+
+ if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
+ return 0x00;
+
+ io_len = (sd->ocr & (1 << 30)) ? 512 : sd->blk_len;
+
+ switch (sd->current_cmd) {
+ case 6: /* CMD6: SWITCH_FUNCTION */
+ ret = sd->data[sd->data_offset ++];
+
+ if (sd->data_offset >= 64)
+ sd->state = sd_transfer_state;
+ break;
+
+ case 9: /* CMD9: SEND_CSD */
+ case 10: /* CMD10: SEND_CID */
+ ret = sd->data[sd->data_offset ++];
+
+ if (sd->data_offset >= 16)
+ sd->state = sd_transfer_state;
+ break;
+
+ case 11: /* CMD11: READ_DAT_UNTIL_STOP */
+ if (sd->data_offset == 0)
+ BLK_READ_BLOCK(sd->data_start, io_len);
+ ret = sd->data[sd->data_offset ++];
+
+ if (sd->data_offset >= io_len) {
+ sd->data_start += io_len;
+ sd->data_offset = 0;
+ if (sd->data_start + io_len > sd->size) {
+ sd->card_status |= ADDRESS_ERROR;
+ break;
+ }
+ }
+ break;
+
+ case 13: /* ACMD13: SD_STATUS */
+ ret = sd->sd_status[sd->data_offset ++];
+
+ if (sd->data_offset >= sizeof(sd->sd_status))
+ sd->state = sd_transfer_state;
+ break;
+
+ case 17: /* CMD17: READ_SINGLE_BLOCK */
+ if (sd->data_offset == 0)
+ BLK_READ_BLOCK(sd->data_start, io_len);
+ ret = sd->data[sd->data_offset ++];
+
+ if (sd->data_offset >= io_len)
+ sd->state = sd_transfer_state;
+ break;
+
+ case 18: /* CMD18: READ_MULTIPLE_BLOCK */
+ if (sd->data_offset == 0)
+ BLK_READ_BLOCK(sd->data_start, io_len);
+ ret = sd->data[sd->data_offset ++];
+
+ if (sd->data_offset >= io_len) {
+ sd->data_start += io_len;
+ sd->data_offset = 0;
+ if (sd->data_start + io_len > sd->size) {
+ sd->card_status |= ADDRESS_ERROR;
+ break;
+ }
+ }
+ break;
+
+ case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */
+ ret = sd->data[sd->data_offset ++];
+
+ if (sd->data_offset >= 4)
+ sd->state = sd_transfer_state;
+ break;
+
+ case 30: /* CMD30: SEND_WRITE_PROT */
+ ret = sd->data[sd->data_offset ++];
+
+ if (sd->data_offset >= 4)
+ sd->state = sd_transfer_state;
+ break;
+
+ case 51: /* ACMD51: SEND_SCR */
+ ret = sd->scr[sd->data_offset ++];
+
+ if (sd->data_offset >= sizeof(sd->scr))
+ sd->state = sd_transfer_state;
+ break;
+
+ case 56: /* CMD56: GEN_CMD */
+ if (sd->data_offset == 0)
+ APP_READ_BLOCK(sd->data_start, sd->blk_len);
+ ret = sd->data[sd->data_offset ++];
+
+ if (sd->data_offset >= sd->blk_len)
+ sd->state = sd_transfer_state;
+ break;
+
+ default:
+ fprintf(stderr, "sd_read_data: unknown command\n");
+ return 0x00;
+ }
+
+ return ret;
+}
+
+bool sd_data_ready(SDState *sd)
+{
+ return sd->state == sd_sendingdata_state;
+}
+
+void sd_enable(SDState *sd, bool enable)
+{
+ sd->enable = enable;
+}
diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
new file mode 100644
index 0000000..4a29e6c
--- /dev/null
+++ b/hw/sd/sdhci.c
@@ -0,0 +1,1300 @@
+/*
+ * 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/>.
+ */
+
+#include "hw/hw.h"
+#include "sysemu/blockdev.h"
+#include "sysemu/dma.h"
+#include "qemu/timer.h"
+#include "block/block_int.h"
+#include "qemu/bitops.h"
+
+#include "hw/sdhci.h"
+
+/* host controller debug messages */
+#ifndef SDHC_DEBUG
+#define SDHC_DEBUG 0
+#endif
+
+#if SDHC_DEBUG == 0
+ #define DPRINT_L1(fmt, args...) do { } while (0)
+ #define DPRINT_L2(fmt, args...) do { } while (0)
+ #define ERRPRINT(fmt, args...) do { } while (0)
+#elif SDHC_DEBUG == 1
+ #define DPRINT_L1(fmt, args...) \
+ do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0)
+ #define DPRINT_L2(fmt, args...) do { } while (0)
+ #define ERRPRINT(fmt, args...) \
+ do {fprintf(stderr, "QEMU SDHC ERROR: "fmt, ## args); } while (0)
+#else
+ #define DPRINT_L1(fmt, args...) \
+ do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0)
+ #define DPRINT_L2(fmt, args...) \
+ do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0)
+ #define ERRPRINT(fmt, args...) \
+ do {fprintf(stderr, "QEMU SDHC ERROR: "fmt, ## args); } while (0)
+#endif
+
+/* Default SD/MMC host controller features information, which will be
+ * presented in CAPABILITIES register of generic SD host controller at reset.
+ * If not stated otherwise:
+ * 0 - not supported, 1 - supported, other - prohibited.
+ */
+#define SDHC_CAPAB_64BITBUS 0ul /* 64-bit System Bus Support */
+#define SDHC_CAPAB_18V 1ul /* Voltage support 1.8v */
+#define SDHC_CAPAB_30V 0ul /* Voltage support 3.0v */
+#define SDHC_CAPAB_33V 1ul /* Voltage support 3.3v */
+#define SDHC_CAPAB_SUSPRESUME 0ul /* Suspend/resume support */
+#define SDHC_CAPAB_SDMA 1ul /* SDMA support */
+#define SDHC_CAPAB_HIGHSPEED 1ul /* High speed support */
+#define SDHC_CAPAB_ADMA1 1ul /* ADMA1 support */
+#define SDHC_CAPAB_ADMA2 1ul /* ADMA2 support */
+/* Maximum host controller R/W buffers size
+ * Possible values: 512, 1024, 2048 bytes */
+#define SDHC_CAPAB_MAXBLOCKLENGTH 512ul
+/* Maximum clock frequency for SDclock in MHz
+ * value in range 10-63 MHz, 0 - not defined */
+#define SDHC_CAPAB_BASECLKFREQ 0ul
+#define SDHC_CAPAB_TOUNIT 1ul /* Timeout clock unit 0 - kHz, 1 - MHz */
+/* Timeout clock frequency 1-63, 0 - not defined */
+#define SDHC_CAPAB_TOCLKFREQ 0ul
+
+/* Now check all parameters and calculate CAPABILITIES REGISTER value */
+#if SDHC_CAPAB_64BITBUS > 1 || SDHC_CAPAB_18V > 1 || SDHC_CAPAB_30V > 1 || \
+ SDHC_CAPAB_33V > 1 || SDHC_CAPAB_SUSPRESUME > 1 || SDHC_CAPAB_SDMA > 1 || \
+ SDHC_CAPAB_HIGHSPEED > 1 || SDHC_CAPAB_ADMA2 > 1 || SDHC_CAPAB_ADMA1 > 1 ||\
+ SDHC_CAPAB_TOUNIT > 1
+#error Capabilities features can have value 0 or 1 only!
+#endif
+
+#if SDHC_CAPAB_MAXBLOCKLENGTH == 512
+#define MAX_BLOCK_LENGTH 0ul
+#elif SDHC_CAPAB_MAXBLOCKLENGTH == 1024
+#define MAX_BLOCK_LENGTH 1ul
+#elif SDHC_CAPAB_MAXBLOCKLENGTH == 2048
+#define MAX_BLOCK_LENGTH 2ul
+#else
+#error Max host controller block size can have value 512, 1024 or 2048 only!
+#endif
+
+#if (SDHC_CAPAB_BASECLKFREQ > 0 && SDHC_CAPAB_BASECLKFREQ < 10) || \
+ SDHC_CAPAB_BASECLKFREQ > 63
+#error SDclock frequency can have value in range 0, 10-63 only!
+#endif
+
+#if SDHC_CAPAB_TOCLKFREQ > 63
+#error Timeout clock frequency can have value in range 0-63 only!
+#endif
+
+#define SDHC_CAPAB_REG_DEFAULT \
+ ((SDHC_CAPAB_64BITBUS << 28) | (SDHC_CAPAB_18V << 26) | \
+ (SDHC_CAPAB_30V << 25) | (SDHC_CAPAB_33V << 24) | \
+ (SDHC_CAPAB_SUSPRESUME << 23) | (SDHC_CAPAB_SDMA << 22) | \
+ (SDHC_CAPAB_HIGHSPEED << 21) | (SDHC_CAPAB_ADMA1 << 20) | \
+ (SDHC_CAPAB_ADMA2 << 19) | (MAX_BLOCK_LENGTH << 16) | \
+ (SDHC_CAPAB_BASECLKFREQ << 8) | (SDHC_CAPAB_TOUNIT << 7) | \
+ (SDHC_CAPAB_TOCLKFREQ))
+
+#define MASKED_WRITE(reg, mask, val) (reg = (reg & (mask)) | (val))
+
+static uint8_t sdhci_slotint(SDHCIState *s)
+{
+ return (s->norintsts & s->norintsigen) || (s->errintsts & s->errintsigen) ||
+ ((s->norintsts & SDHC_NIS_INSERT) && (s->wakcon & SDHC_WKUP_ON_INS)) ||
+ ((s->norintsts & SDHC_NIS_REMOVE) && (s->wakcon & SDHC_WKUP_ON_RMV));
+}
+
+static inline void sdhci_update_irq(SDHCIState *s)
+{
+ qemu_set_irq(s->irq, sdhci_slotint(s));
+}
+
+static void sdhci_raise_insertion_irq(void *opaque)
+{
+ SDHCIState *s = (SDHCIState *)opaque;
+
+ if (s->norintsts & SDHC_NIS_REMOVE) {
+ qemu_mod_timer(s->insert_timer,
+ qemu_get_clock_ns(vm_clock) + SDHC_INSERTION_DELAY);
+ } else {
+ s->prnsts = 0x1ff0000;
+ if (s->norintstsen & SDHC_NISEN_INSERT) {
+ s->norintsts |= SDHC_NIS_INSERT;
+ }
+ sdhci_update_irq(s);
+ }
+}
+
+static void sdhci_insert_eject_cb(void *opaque, int irq, int level)
+{
+ SDHCIState *s = (SDHCIState *)opaque;
+ DPRINT_L1("Card state changed: %s!\n", level ? "insert" : "eject");
+
+ if ((s->norintsts & SDHC_NIS_REMOVE) && level) {
+ /* Give target some time to notice card ejection */
+ qemu_mod_timer(s->insert_timer,
+ qemu_get_clock_ns(vm_clock) + SDHC_INSERTION_DELAY);
+ } else {
+ if (level) {
+ s->prnsts = 0x1ff0000;
+ if (s->norintstsen & SDHC_NISEN_INSERT) {
+ s->norintsts |= SDHC_NIS_INSERT;
+ }
+ } else {
+ s->prnsts = 0x1fa0000;
+ s->pwrcon &= ~SDHC_POWER_ON;
+ s->clkcon &= ~SDHC_CLOCK_SDCLK_EN;
+ if (s->norintstsen & SDHC_NISEN_REMOVE) {
+ s->norintsts |= SDHC_NIS_REMOVE;
+ }
+ }
+ sdhci_update_irq(s);
+ }
+}
+
+static void sdhci_card_readonly_cb(void *opaque, int irq, int level)
+{
+ SDHCIState *s = (SDHCIState *)opaque;
+
+ if (level) {
+ s->prnsts &= ~SDHC_WRITE_PROTECT;
+ } else {
+ /* Write enabled */
+ s->prnsts |= SDHC_WRITE_PROTECT;
+ }
+}
+
+static void sdhci_reset(SDHCIState *s)
+{
+ qemu_del_timer(s->insert_timer);
+ qemu_del_timer(s->transfer_timer);
+ /* Set all registers to 0. Capabilities registers are not cleared
+ * and assumed to always preserve their value, given to them during
+ * initialization */
+ memset(&s->sdmasysad, 0, (uintptr_t)&s->capareg - (uintptr_t)&s->sdmasysad);
+
+ sd_set_cb(s->card, s->ro_cb, s->eject_cb);
+ s->data_count = 0;
+ s->stopped_state = sdhc_not_stopped;
+}
+
+static void sdhci_do_data_transfer(void *opaque)
+{
+ SDHCIState *s = (SDHCIState *)opaque;
+
+ SDHCI_GET_CLASS(s)->data_transfer(s);
+}
+
+static void sdhci_send_command(SDHCIState *s)
+{
+ SDRequest request;
+ uint8_t response[16];
+ int rlen;
+
+ s->errintsts = 0;
+ s->acmd12errsts = 0;
+ request.cmd = s->cmdreg >> 8;
+ request.arg = s->argument;
+ DPRINT_L1("sending CMD%u ARG[0x%08x]\n", request.cmd, request.arg);
+ rlen = sd_do_command(s->card, &request, response);
+
+ if (s->cmdreg & SDHC_CMD_RESPONSE) {
+ if (rlen == 4) {
+ s->rspreg[0] = (response[0] << 24) | (response[1] << 16) |
+ (response[2] << 8) | response[3];
+ s->rspreg[1] = s->rspreg[2] = s->rspreg[3] = 0;
+ DPRINT_L1("Response: RSPREG[31..0]=0x%08x\n", s->rspreg[0]);
+ } else if (rlen == 16) {
+ s->rspreg[0] = (response[11] << 24) | (response[12] << 16) |
+ (response[13] << 8) | response[14];
+ s->rspreg[1] = (response[7] << 24) | (response[8] << 16) |
+ (response[9] << 8) | response[10];
+ s->rspreg[2] = (response[3] << 24) | (response[4] << 16) |
+ (response[5] << 8) | response[6];
+ s->rspreg[3] = (response[0] << 16) | (response[1] << 8) |
+ response[2];
+ DPRINT_L1("Response received:\n RSPREG[127..96]=0x%08x, RSPREG[95.."
+ "64]=0x%08x,\n RSPREG[63..32]=0x%08x, RSPREG[31..0]=0x%08x\n",
+ s->rspreg[3], s->rspreg[2], s->rspreg[1], s->rspreg[0]);
+ } else {
+ ERRPRINT("Timeout waiting for command response\n");
+ if (s->errintstsen & SDHC_EISEN_CMDTIMEOUT) {
+ s->errintsts |= SDHC_EIS_CMDTIMEOUT;
+ s->norintsts |= SDHC_NIS_ERR;
+ }
+ }
+
+ if ((s->norintstsen & SDHC_NISEN_TRSCMP) &&
+ (s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY) {
+ s->norintsts |= SDHC_NIS_TRSCMP;
+ }
+ } else if (rlen != 0 && (s->errintstsen & SDHC_EISEN_CMDIDX)) {
+ s->errintsts |= SDHC_EIS_CMDIDX;
+ s->norintsts |= SDHC_NIS_ERR;
+ }
+
+ if (s->norintstsen & SDHC_NISEN_CMDCMP) {
+ s->norintsts |= SDHC_NIS_CMDCMP;
+ }
+
+ sdhci_update_irq(s);
+
+ if (s->blksize && (s->cmdreg & SDHC_CMD_DATA_PRESENT)) {
+ sdhci_do_data_transfer(s);
+ }
+}
+
+static void sdhci_end_transfer(SDHCIState *s)
+{
+ /* Automatically send CMD12 to stop transfer if AutoCMD12 enabled */
+ if ((s->trnmod & SDHC_TRNS_ACMD12) != 0) {
+ SDRequest request;
+ uint8_t response[16];
+
+ request.cmd = 0x0C;
+ request.arg = 0;
+ DPRINT_L1("Automatically issue CMD%d %08x\n", request.cmd, request.arg);
+ sd_do_command(s->card, &request, response);
+ /* Auto CMD12 response goes to the upper Response register */
+ s->rspreg[3] = (response[0] << 24) | (response[1] << 16) |
+ (response[2] << 8) | response[3];
+ }
+
+ s->prnsts &= ~(SDHC_DOING_READ | SDHC_DOING_WRITE |
+ SDHC_DAT_LINE_ACTIVE | SDHC_DATA_INHIBIT |
+ SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE);
+
+ if (s->norintstsen & SDHC_NISEN_TRSCMP) {
+ s->norintsts |= SDHC_NIS_TRSCMP;
+ }
+
+ sdhci_update_irq(s);
+}
+
+/*
+ * Programmed i/o data transfer
+ */
+
+/* Fill host controller's read buffer with BLKSIZE bytes of data from card */
+static void sdhci_read_block_from_card(SDHCIState *s)
+{
+ int index = 0;
+
+ if ((s->trnmod & SDHC_TRNS_MULTI) &&
+ (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) {
+ return;
+ }
+
+ for (index = 0; index < (s->blksize & 0x0fff); index++) {
+ s->fifo_buffer[index] = sd_read_data(s->card);
+ }
+
+ /* New data now available for READ through Buffer Port Register */
+ s->prnsts |= SDHC_DATA_AVAILABLE;
+ if (s->norintstsen & SDHC_NISEN_RBUFRDY) {
+ s->norintsts |= SDHC_NIS_RBUFRDY;
+ }
+
+ /* Clear DAT line active status if that was the last block */
+ if ((s->trnmod & SDHC_TRNS_MULTI) == 0 ||
+ ((s->trnmod & SDHC_TRNS_MULTI) && s->blkcnt == 1)) {
+ s->prnsts &= ~SDHC_DAT_LINE_ACTIVE;
+ }
+
+ /* If stop at block gap request was set and it's not the last block of
+ * data - generate Block Event interrupt */
+ if (s->stopped_state == sdhc_gap_read && (s->trnmod & SDHC_TRNS_MULTI) &&
+ s->blkcnt != 1) {
+ s->prnsts &= ~SDHC_DAT_LINE_ACTIVE;
+ if (s->norintstsen & SDHC_EISEN_BLKGAP) {
+ s->norintsts |= SDHC_EIS_BLKGAP;
+ }
+ }
+
+ sdhci_update_irq(s);
+}
+
+/* Read @size byte of data from host controller @s BUFFER DATA PORT register */
+static uint32_t sdhci_read_dataport(SDHCIState *s, unsigned size)
+{
+ uint32_t value = 0;
+ int i;
+
+ /* first check that a valid data exists in host controller input buffer */
+ if ((s->prnsts & SDHC_DATA_AVAILABLE) == 0) {
+ ERRPRINT("Trying to read from empty buffer\n");
+ return 0;
+ }
+
+ for (i = 0; i < size; i++) {
+ value |= s->fifo_buffer[s->data_count] << i * 8;
+ s->data_count++;
+ /* check if we've read all valid data (blksize bytes) from buffer */
+ if ((s->data_count) >= (s->blksize & 0x0fff)) {
+ DPRINT_L2("All %u bytes of data have been read from input buffer\n",
+ s->data_count);
+ s->prnsts &= ~SDHC_DATA_AVAILABLE; /* no more data in a buffer */
+ s->data_count = 0; /* next buff read must start at position [0] */
+
+ if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
+ s->blkcnt--;
+ }
+
+ /* if that was the last block of data */
+ if ((s->trnmod & SDHC_TRNS_MULTI) == 0 ||
+ ((s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) ||
+ /* stop at gap request */
+ (s->stopped_state == sdhc_gap_read &&
+ !(s->prnsts & SDHC_DAT_LINE_ACTIVE))) {
+ SDHCI_GET_CLASS(s)->end_data_transfer(s);
+ } else { /* if there are more data, read next block from card */
+ SDHCI_GET_CLASS(s)->read_block_from_card(s);
+ }
+ break;
+ }
+ }
+
+ return value;
+}
+
+/* Write data from host controller FIFO to card */
+static void sdhci_write_block_to_card(SDHCIState *s)
+{
+ int index = 0;
+
+ if (s->prnsts & SDHC_SPACE_AVAILABLE) {
+ if (s->norintstsen & SDHC_NISEN_WBUFRDY) {
+ s->norintsts |= SDHC_NIS_WBUFRDY;
+ }
+ sdhci_update_irq(s);
+ return;
+ }
+
+ if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
+ if (s->blkcnt == 0) {
+ return;
+ } else {
+ s->blkcnt--;
+ }
+ }
+
+ for (index = 0; index < (s->blksize & 0x0fff); index++) {
+ sd_write_data(s->card, s->fifo_buffer[index]);
+ }
+
+ /* Next data can be written through BUFFER DATORT register */
+ s->prnsts |= SDHC_SPACE_AVAILABLE;
+ if (s->norintstsen & SDHC_NISEN_WBUFRDY) {
+ s->norintsts |= SDHC_NIS_WBUFRDY;
+ }
+
+ /* Finish transfer if that was the last block of data */
+ if ((s->trnmod & SDHC_TRNS_MULTI) == 0 ||
+ ((s->trnmod & SDHC_TRNS_MULTI) &&
+ (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0))) {
+ SDHCI_GET_CLASS(s)->end_data_transfer(s);
+ }
+
+ /* Generate Block Gap Event if requested and if not the last block */
+ if (s->stopped_state == sdhc_gap_write && (s->trnmod & SDHC_TRNS_MULTI) &&
+ s->blkcnt > 0) {
+ s->prnsts &= ~SDHC_DOING_WRITE;
+ if (s->norintstsen & SDHC_EISEN_BLKGAP) {
+ s->norintsts |= SDHC_EIS_BLKGAP;
+ }
+ SDHCI_GET_CLASS(s)->end_data_transfer(s);
+ }
+
+ sdhci_update_irq(s);
+}
+
+/* Write @size bytes of @value data to host controller @s Buffer Data Port
+ * register */
+static void sdhci_write_dataport(SDHCIState *s, uint32_t value, unsigned size)
+{
+ unsigned i;
+
+ /* Check that there is free space left in a buffer */
+ if (!(s->prnsts & SDHC_SPACE_AVAILABLE)) {
+ ERRPRINT("Can't write to data buffer: buffer full\n");
+ return;
+ }
+
+ for (i = 0; i < size; i++) {
+ s->fifo_buffer[s->data_count] = value & 0xFF;
+ s->data_count++;
+ value >>= 8;
+ if (s->data_count >= (s->blksize & 0x0fff)) {
+ DPRINT_L2("write buffer filled with %u bytes of data\n",
+ s->data_count);
+ s->data_count = 0;
+ s->prnsts &= ~SDHC_SPACE_AVAILABLE;
+ if (s->prnsts & SDHC_DOING_WRITE) {
+ SDHCI_GET_CLASS(s)->write_block_to_card(s);
+ }
+ }
+ }
+}
+
+/*
+ * Single DMA data transfer
+ */
+
+/* Multi block SDMA transfer */
+static void sdhci_sdma_transfer_multi_blocks(SDHCIState *s)
+{
+ bool page_aligned = false;
+ unsigned int n, begin;
+ const uint16_t block_size = s->blksize & 0x0fff;
+ uint32_t boundary_chk = 1 << (((s->blksize & 0xf000) >> 12) + 12);
+ uint32_t boundary_count = boundary_chk - (s->sdmasysad % boundary_chk);
+
+ /* XXX: Some sd/mmc drivers (for example, u-boot-slp) do not account for
+ * possible stop at page boundary if initial address is not page aligned,
+ * allow them to work properly */
+ if ((s->sdmasysad % boundary_chk) == 0) {
+ page_aligned = true;
+ }
+
+ if (s->trnmod & SDHC_TRNS_READ) {
+ s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT |
+ SDHC_DAT_LINE_ACTIVE;
+ while (s->blkcnt) {
+ if (s->data_count == 0) {
+ for (n = 0; n < block_size; n++) {
+ s->fifo_buffer[n] = sd_read_data(s->card);
+ }
+ }
+ begin = s->data_count;
+ if (((boundary_count + begin) < block_size) && page_aligned) {
+ s->data_count = boundary_count + begin;
+ boundary_count = 0;
+ } else {
+ s->data_count = block_size;
+ boundary_count -= block_size - begin;
+ if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
+ s->blkcnt--;
+ }
+ }
+ dma_memory_write(&dma_context_memory, s->sdmasysad,
+ &s->fifo_buffer[begin], s->data_count - begin);
+ s->sdmasysad += s->data_count - begin;
+ if (s->data_count == block_size) {
+ s->data_count = 0;
+ }
+ if (page_aligned && boundary_count == 0) {
+ break;
+ }
+ }
+ } else {
+ s->prnsts |= SDHC_DOING_WRITE | SDHC_DATA_INHIBIT |
+ SDHC_DAT_LINE_ACTIVE;
+ while (s->blkcnt) {
+ begin = s->data_count;
+ if (((boundary_count + begin) < block_size) && page_aligned) {
+ s->data_count = boundary_count + begin;
+ boundary_count = 0;
+ } else {
+ s->data_count = block_size;
+ boundary_count -= block_size - begin;
+ }
+ dma_memory_read(&dma_context_memory, s->sdmasysad,
+ &s->fifo_buffer[begin], s->data_count);
+ s->sdmasysad += s->data_count - begin;
+ if (s->data_count == block_size) {
+ for (n = 0; n < block_size; n++) {
+ sd_write_data(s->card, s->fifo_buffer[n]);
+ }
+ s->data_count = 0;
+ if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
+ s->blkcnt--;
+ }
+ }
+ if (page_aligned && boundary_count == 0) {
+ break;
+ }
+ }
+ }
+
+ if (s->blkcnt == 0) {
+ SDHCI_GET_CLASS(s)->end_data_transfer(s);
+ } else {
+ if (s->norintstsen & SDHC_NISEN_DMA) {
+ s->norintsts |= SDHC_NIS_DMA;
+ }
+ sdhci_update_irq(s);
+ }
+}
+
+/* single block SDMA transfer */
+
+static void sdhci_sdma_transfer_single_block(SDHCIState *s)
+{
+ int n;
+ uint32_t datacnt = s->blksize & 0x0fff;
+
+ if (s->trnmod & SDHC_TRNS_READ) {
+ for (n = 0; n < datacnt; n++) {
+ s->fifo_buffer[n] = sd_read_data(s->card);
+ }
+ dma_memory_write(&dma_context_memory, s->sdmasysad, s->fifo_buffer,
+ datacnt);
+ } else {
+ dma_memory_read(&dma_context_memory, s->sdmasysad, s->fifo_buffer,
+ datacnt);
+ for (n = 0; n < datacnt; n++) {
+ sd_write_data(s->card, s->fifo_buffer[n]);
+ }
+ }
+
+ if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
+ s->blkcnt--;
+ }
+
+ SDHCI_GET_CLASS(s)->end_data_transfer(s);
+}
+
+typedef struct ADMADescr {
+ hwaddr addr;
+ uint16_t length;
+ uint8_t attr;
+ uint8_t incr;
+} ADMADescr;
+
+static void get_adma_description(SDHCIState *s, ADMADescr *dscr)
+{
+ uint32_t adma1 = 0;
+ uint64_t adma2 = 0;
+ hwaddr entry_addr = (hwaddr)s->admasysaddr;
+ switch (SDHC_DMA_TYPE(s->hostctl)) {
+ case SDHC_CTRL_ADMA2_32:
+ dma_memory_read(&dma_context_memory, entry_addr, (uint8_t *)&adma2,
+ sizeof(adma2));
+ adma2 = le64_to_cpu(adma2);
+ /* The spec does not specify endianness of descriptor table.
+ * We currently assume that it is LE.
+ */
+ dscr->addr = (hwaddr)extract64(adma2, 32, 32) & ~0x3ull;
+ dscr->length = (uint16_t)extract64(adma2, 16, 16);
+ dscr->attr = (uint8_t)extract64(adma2, 0, 7);
+ dscr->incr = 8;
+ break;
+ case SDHC_CTRL_ADMA1_32:
+ dma_memory_read(&dma_context_memory, entry_addr, (uint8_t *)&adma1,
+ sizeof(adma1));
+ adma1 = le32_to_cpu(adma1);
+ dscr->addr = (hwaddr)(adma1 & 0xFFFFF000);
+ dscr->attr = (uint8_t)extract32(adma1, 0, 7);
+ dscr->incr = 4;
+ if ((dscr->attr & SDHC_ADMA_ATTR_ACT_MASK) == SDHC_ADMA_ATTR_SET_LEN) {
+ dscr->length = (uint16_t)extract32(adma1, 12, 16);
+ } else {
+ dscr->length = 4096;
+ }
+ break;
+ case SDHC_CTRL_ADMA2_64:
+ dma_memory_read(&dma_context_memory, entry_addr,
+ (uint8_t *)(&dscr->attr), 1);
+ dma_memory_read(&dma_context_memory, entry_addr + 2,
+ (uint8_t *)(&dscr->length), 2);
+ dscr->length = le16_to_cpu(dscr->length);
+ dma_memory_read(&dma_context_memory, entry_addr + 4,
+ (uint8_t *)(&dscr->addr), 8);
+ dscr->attr = le64_to_cpu(dscr->attr);
+ dscr->attr &= 0xfffffff8;
+ dscr->incr = 12;
+ break;
+ }
+}
+
+/* Advanced DMA data transfer */
+
+static void sdhci_do_adma(SDHCIState *s)
+{
+ unsigned int n, begin, length;
+ const uint16_t block_size = s->blksize & 0x0fff;
+ ADMADescr dscr;
+ int i;
+
+ for (i = 0; i < SDHC_ADMA_DESCS_PER_DELAY; ++i) {
+ s->admaerr &= ~SDHC_ADMAERR_LENGTH_MISMATCH;
+
+ get_adma_description(s, &dscr);
+ DPRINT_L2("ADMA loop: addr=" TARGET_FMT_plx ", len=%d, attr=%x\n",
+ dscr.addr, dscr.length, dscr.attr);
+
+ if ((dscr.attr & SDHC_ADMA_ATTR_VALID) == 0) {
+ /* Indicate that error occurred in ST_FDS state */
+ s->admaerr &= ~SDHC_ADMAERR_STATE_MASK;
+ s->admaerr |= SDHC_ADMAERR_STATE_ST_FDS;
+
+ /* Generate ADMA error interrupt */
+ if (s->errintstsen & SDHC_EISEN_ADMAERR) {
+ s->errintsts |= SDHC_EIS_ADMAERR;
+ s->norintsts |= SDHC_NIS_ERR;
+ }
+
+ sdhci_update_irq(s);
+ return;
+ }
+
+ length = dscr.length ? dscr.length : 65536;
+
+ switch (dscr.attr & SDHC_ADMA_ATTR_ACT_MASK) {
+ case SDHC_ADMA_ATTR_ACT_TRAN: /* data transfer */
+
+ if (s->trnmod & SDHC_TRNS_READ) {
+ while (length) {
+ if (s->data_count == 0) {
+ for (n = 0; n < block_size; n++) {
+ s->fifo_buffer[n] = sd_read_data(s->card);
+ }
+ }
+ begin = s->data_count;
+ if ((length + begin) < block_size) {
+ s->data_count = length + begin;
+ length = 0;
+ } else {
+ s->data_count = block_size;
+ length -= block_size - begin;
+ }
+ dma_memory_write(&dma_context_memory, dscr.addr,
+ &s->fifo_buffer[begin],
+ s->data_count - begin);
+ dscr.addr += s->data_count - begin;
+ if (s->data_count == block_size) {
+ s->data_count = 0;
+ if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
+ s->blkcnt--;
+ if (s->blkcnt == 0) {
+ break;
+ }
+ }
+ }
+ }
+ } else {
+ while (length) {
+ begin = s->data_count;
+ if ((length + begin) < block_size) {
+ s->data_count = length + begin;
+ length = 0;
+ } else {
+ s->data_count = block_size;
+ length -= block_size - begin;
+ }
+ dma_memory_read(&dma_context_memory, dscr.addr,
+ &s->fifo_buffer[begin], s->data_count);
+ dscr.addr += s->data_count - begin;
+ if (s->data_count == block_size) {
+ for (n = 0; n < block_size; n++) {
+ sd_write_data(s->card, s->fifo_buffer[n]);
+ }
+ s->data_count = 0;
+ if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
+ s->blkcnt--;
+ if (s->blkcnt == 0) {
+ break;
+ }
+ }
+ }
+ }
+ }
+ s->admasysaddr += dscr.incr;
+ break;
+ case SDHC_ADMA_ATTR_ACT_LINK: /* link to next descriptor table */
+ s->admasysaddr = dscr.addr;
+ DPRINT_L1("ADMA link: admasysaddr=0x%lx\n", s->admasysaddr);
+ break;
+ default:
+ s->admasysaddr += dscr.incr;
+ break;
+ }
+
+ /* ADMA transfer terminates if blkcnt == 0 or by END attribute */
+ if (((s->trnmod & SDHC_TRNS_BLK_CNT_EN) &&
+ (s->blkcnt == 0)) || (dscr.attr & SDHC_ADMA_ATTR_END)) {
+ DPRINT_L2("ADMA transfer completed\n");
+ if (length || ((dscr.attr & SDHC_ADMA_ATTR_END) &&
+ (s->trnmod & SDHC_TRNS_BLK_CNT_EN) &&
+ s->blkcnt != 0)) {
+ ERRPRINT("SD/MMC host ADMA length mismatch\n");
+ s->admaerr |= SDHC_ADMAERR_LENGTH_MISMATCH |
+ SDHC_ADMAERR_STATE_ST_TFR;
+ if (s->errintstsen & SDHC_EISEN_ADMAERR) {
+ ERRPRINT("Set ADMA error flag\n");
+ s->errintsts |= SDHC_EIS_ADMAERR;
+ s->norintsts |= SDHC_NIS_ERR;
+ }
+
+ sdhci_update_irq(s);
+ }
+ SDHCI_GET_CLASS(s)->end_data_transfer(s);
+ return;
+ }
+
+ if (dscr.attr & SDHC_ADMA_ATTR_INT) {
+ DPRINT_L1("ADMA interrupt: admasysaddr=0x%lx\n", s->admasysaddr);
+ if (s->norintstsen & SDHC_NISEN_DMA) {
+ s->norintsts |= SDHC_NIS_DMA;
+ }
+
+ sdhci_update_irq(s);
+ return;
+ }
+ }
+
+ /* we have unfinished business - reschedule to continue ADMA */
+ qemu_mod_timer(s->transfer_timer,
+ qemu_get_clock_ns(vm_clock) + SDHC_TRANSFER_DELAY);
+}
+
+/* Perform data transfer according to controller configuration */
+
+static void sdhci_data_transfer(SDHCIState *s)
+{
+ SDHCIClass *k = SDHCI_GET_CLASS(s);
+ s->data_count = 0;
+
+ if (s->trnmod & SDHC_TRNS_DMA) {
+ switch (SDHC_DMA_TYPE(s->hostctl)) {
+ case SDHC_CTRL_SDMA:
+ if ((s->trnmod & SDHC_TRNS_MULTI) &&
+ (!(s->trnmod & SDHC_TRNS_BLK_CNT_EN) || s->blkcnt == 0)) {
+ break;
+ }
+
+ if ((s->blkcnt == 1) || !(s->trnmod & SDHC_TRNS_MULTI)) {
+ k->do_sdma_single(s);
+ } else {
+ k->do_sdma_multi(s);
+ }
+
+ break;
+ case SDHC_CTRL_ADMA1_32:
+ if (!(s->capareg & SDHC_CAN_DO_ADMA1)) {
+ ERRPRINT("ADMA1 not supported\n");
+ break;
+ }
+
+ k->do_adma(s);
+ break;
+ case SDHC_CTRL_ADMA2_32:
+ if (!(s->capareg & SDHC_CAN_DO_ADMA2)) {
+ ERRPRINT("ADMA2 not supported\n");
+ break;
+ }
+
+ k->do_adma(s);
+ break;
+ case SDHC_CTRL_ADMA2_64:
+ if (!(s->capareg & SDHC_CAN_DO_ADMA2) ||
+ !(s->capareg & SDHC_64_BIT_BUS_SUPPORT)) {
+ ERRPRINT("64 bit ADMA not supported\n");
+ break;
+ }
+
+ k->do_adma(s);
+ break;
+ default:
+ ERRPRINT("Unsupported DMA type\n");
+ break;
+ }
+ } else {
+ if ((s->trnmod & SDHC_TRNS_READ) && sd_data_ready(s->card)) {
+ s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT |
+ SDHC_DAT_LINE_ACTIVE;
+ SDHCI_GET_CLASS(s)->read_block_from_card(s);
+ } else {
+ s->prnsts |= SDHC_DOING_WRITE | SDHC_DAT_LINE_ACTIVE |
+ SDHC_SPACE_AVAILABLE | SDHC_DATA_INHIBIT;
+ SDHCI_GET_CLASS(s)->write_block_to_card(s);
+ }
+ }
+}
+
+static bool sdhci_can_issue_command(SDHCIState *s)
+{
+ if (!SDHC_CLOCK_IS_ON(s->clkcon) || !(s->pwrcon & SDHC_POWER_ON) ||
+ (((s->prnsts & SDHC_DATA_INHIBIT) || s->stopped_state) &&
+ ((s->cmdreg & SDHC_CMD_DATA_PRESENT) ||
+ ((s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY &&
+ !(SDHC_COMMAND_TYPE(s->cmdreg) == SDHC_CMD_ABORT))))) {
+ return false;
+ }
+
+ return true;
+}
+
+/* The Buffer Data Port register must be accessed in sequential and
+ * continuous manner */
+static inline bool
+sdhci_buff_access_is_sequential(SDHCIState *s, unsigned byte_num)
+{
+ if ((s->data_count & 0x3) != byte_num) {
+ ERRPRINT("Non-sequential access to Buffer Data Port register"
+ "is prohibited\n");
+ return false;
+ }
+ return true;
+}
+
+static uint32_t sdhci_read(SDHCIState *s, unsigned int offset, unsigned size)
+{
+ uint32_t ret = 0;
+
+ switch (offset & ~0x3) {
+ case SDHC_SYSAD:
+ ret = s->sdmasysad;
+ break;
+ case SDHC_BLKSIZE:
+ ret = s->blksize | (s->blkcnt << 16);
+ break;
+ case SDHC_ARGUMENT:
+ ret = s->argument;
+ break;
+ case SDHC_TRNMOD:
+ ret = s->trnmod | (s->cmdreg << 16);
+ break;
+ case SDHC_RSPREG0 ... SDHC_RSPREG3:
+ ret = s->rspreg[((offset & ~0x3) - SDHC_RSPREG0) >> 2];
+ break;
+ case SDHC_BDATA:
+ if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) {
+ ret = SDHCI_GET_CLASS(s)->bdata_read(s, size);
+ DPRINT_L2("read %ub: addr[0x%04x] -> %u\n", size, offset, ret);
+ return ret;
+ }
+ break;
+ case SDHC_PRNSTS:
+ ret = s->prnsts;
+ break;
+ case SDHC_HOSTCTL:
+ ret = s->hostctl | (s->pwrcon << 8) | (s->blkgap << 16) |
+ (s->wakcon << 24);
+ break;
+ case SDHC_CLKCON:
+ ret = s->clkcon | (s->timeoutcon << 16);
+ break;
+ case SDHC_NORINTSTS:
+ ret = s->norintsts | (s->errintsts << 16);
+ break;
+ case SDHC_NORINTSTSEN:
+ ret = s->norintstsen | (s->errintstsen << 16);
+ break;
+ case SDHC_NORINTSIGEN:
+ ret = s->norintsigen | (s->errintsigen << 16);
+ break;
+ case SDHC_ACMD12ERRSTS:
+ ret = s->acmd12errsts;
+ break;
+ case SDHC_CAPAREG:
+ ret = s->capareg;
+ break;
+ case SDHC_MAXCURR:
+ ret = s->maxcurr;
+ break;
+ case SDHC_ADMAERR:
+ ret = s->admaerr;
+ break;
+ case SDHC_ADMASYSADDR:
+ ret = (uint32_t)s->admasysaddr;
+ break;
+ case SDHC_ADMASYSADDR + 4:
+ ret = (uint32_t)(s->admasysaddr >> 32);
+ break;
+ case SDHC_SLOT_INT_STATUS:
+ ret = (SD_HOST_SPECv2_VERS << 16) | sdhci_slotint(s);
+ break;
+ default:
+ ERRPRINT("bad %ub read: addr[0x%04x]\n", size, offset);
+ break;
+ }
+
+ ret >>= (offset & 0x3) * 8;
+ ret &= (1ULL << (size * 8)) - 1;
+ DPRINT_L2("read %ub: addr[0x%04x] -> %u(0x%x)\n", size, offset, ret, ret);
+ return ret;
+}
+
+static inline void sdhci_blkgap_write(SDHCIState *s, uint8_t value)
+{
+ if ((value & SDHC_STOP_AT_GAP_REQ) && (s->blkgap & SDHC_STOP_AT_GAP_REQ)) {
+ return;
+ }
+ s->blkgap = value & SDHC_STOP_AT_GAP_REQ;
+
+ if ((value & SDHC_CONTINUE_REQ) && s->stopped_state &&
+ (s->blkgap & SDHC_STOP_AT_GAP_REQ) == 0) {
+ if (s->stopped_state == sdhc_gap_read) {
+ s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_READ;
+ SDHCI_GET_CLASS(s)->read_block_from_card(s);
+ } else {
+ s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_WRITE;
+ SDHCI_GET_CLASS(s)->write_block_to_card(s);
+ }
+ s->stopped_state = sdhc_not_stopped;
+ } else if (!s->stopped_state && (value & SDHC_STOP_AT_GAP_REQ)) {
+ if (s->prnsts & SDHC_DOING_READ) {
+ s->stopped_state = sdhc_gap_read;
+ } else if (s->prnsts & SDHC_DOING_WRITE) {
+ s->stopped_state = sdhc_gap_write;
+ }
+ }
+}
+
+static inline void sdhci_reset_write(SDHCIState *s, uint8_t value)
+{
+ switch (value) {
+ case SDHC_RESET_ALL:
+ DEVICE_GET_CLASS(s)->reset(DEVICE(s));
+ break;
+ case SDHC_RESET_CMD:
+ s->prnsts &= ~SDHC_CMD_INHIBIT;
+ s->norintsts &= ~SDHC_NIS_CMDCMP;
+ break;
+ case SDHC_RESET_DATA:
+ s->data_count = 0;
+ s->prnsts &= ~(SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE |
+ SDHC_DOING_READ | SDHC_DOING_WRITE |
+ SDHC_DATA_INHIBIT | SDHC_DAT_LINE_ACTIVE);
+ s->blkgap &= ~(SDHC_STOP_AT_GAP_REQ | SDHC_CONTINUE_REQ);
+ s->stopped_state = sdhc_not_stopped;
+ s->norintsts &= ~(SDHC_NIS_WBUFRDY | SDHC_NIS_RBUFRDY |
+ SDHC_NIS_DMA | SDHC_NIS_TRSCMP | SDHC_NIS_BLKGAP);
+ break;
+ }
+}
+
+static void
+sdhci_write(SDHCIState *s, unsigned int offset, uint32_t value, unsigned size)
+{
+ unsigned shift = 8 * (offset & 0x3);
+ uint32_t mask = ~(((1ULL << (size * 8)) - 1) << shift);
+ value <<= shift;
+
+ switch (offset & ~0x3) {
+ case SDHC_SYSAD:
+ s->sdmasysad = (s->sdmasysad & mask) | value;
+ MASKED_WRITE(s->sdmasysad, mask, value);
+ /* Writing to last byte of sdmasysad might trigger transfer */
+ if (!(mask & 0xFF000000) && TRANSFERRING_DATA(s->prnsts) && s->blkcnt &&
+ s->blksize && SDHC_DMA_TYPE(s->hostctl) == SDHC_CTRL_SDMA) {
+ SDHCI_GET_CLASS(s)->do_sdma_multi(s);
+ }
+ break;
+ case SDHC_BLKSIZE:
+ if (!TRANSFERRING_DATA(s->prnsts)) {
+ MASKED_WRITE(s->blksize, mask, value);
+ MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16);
+ }
+ break;
+ case SDHC_ARGUMENT:
+ MASKED_WRITE(s->argument, mask, value);
+ break;
+ case SDHC_TRNMOD:
+ /* DMA can be enabled only if it is supported as indicated by
+ * capabilities register */
+ if (!(s->capareg & SDHC_CAN_DO_DMA)) {
+ value &= ~SDHC_TRNS_DMA;
+ }
+ MASKED_WRITE(s->trnmod, mask, value);
+ MASKED_WRITE(s->cmdreg, mask >> 16, value >> 16);
+
+ /* Writing to the upper byte of CMDREG triggers SD command generation */
+ if ((mask & 0xFF000000) || !SDHCI_GET_CLASS(s)->can_issue_command(s)) {
+ break;
+ }
+
+ SDHCI_GET_CLASS(s)->send_command(s);
+ break;
+ case SDHC_BDATA:
+ if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) {
+ SDHCI_GET_CLASS(s)->bdata_write(s, value >> shift, size);
+ }
+ break;
+ case SDHC_HOSTCTL:
+ if (!(mask & 0xFF0000)) {
+ sdhci_blkgap_write(s, value >> 16);
+ }
+ MASKED_WRITE(s->hostctl, mask, value);
+ MASKED_WRITE(s->pwrcon, mask >> 8, value >> 8);
+ MASKED_WRITE(s->wakcon, mask >> 24, value >> 24);
+ if (!(s->prnsts & SDHC_CARD_PRESENT) || ((s->pwrcon >> 1) & 0x7) < 5 ||
+ !(s->capareg & (1 << (31 - ((s->pwrcon >> 1) & 0x7))))) {
+ s->pwrcon &= ~SDHC_POWER_ON;
+ }
+ break;
+ case SDHC_CLKCON:
+ if (!(mask & 0xFF000000)) {
+ sdhci_reset_write(s, value >> 24);
+ }
+ MASKED_WRITE(s->clkcon, mask, value);
+ MASKED_WRITE(s->timeoutcon, mask >> 16, value >> 16);
+ if (s->clkcon & SDHC_CLOCK_INT_EN) {
+ s->clkcon |= SDHC_CLOCK_INT_STABLE;
+ } else {
+ s->clkcon &= ~SDHC_CLOCK_INT_STABLE;
+ }
+ break;
+ case SDHC_NORINTSTS:
+ if (s->norintstsen & SDHC_NISEN_CARDINT) {
+ value &= ~SDHC_NIS_CARDINT;
+ }
+ s->norintsts &= mask | ~value;
+ s->errintsts &= (mask >> 16) | ~(value >> 16);
+ if (s->errintsts) {
+ s->norintsts |= SDHC_NIS_ERR;
+ } else {
+ s->norintsts &= ~SDHC_NIS_ERR;
+ }
+ sdhci_update_irq(s);
+ break;
+ case SDHC_NORINTSTSEN:
+ MASKED_WRITE(s->norintstsen, mask, value);
+ MASKED_WRITE(s->errintstsen, mask >> 16, value >> 16);
+ s->norintsts &= s->norintstsen;
+ s->errintsts &= s->errintstsen;
+ if (s->errintsts) {
+ s->norintsts |= SDHC_NIS_ERR;
+ } else {
+ s->norintsts &= ~SDHC_NIS_ERR;
+ }
+ sdhci_update_irq(s);
+ break;
+ case SDHC_NORINTSIGEN:
+ MASKED_WRITE(s->norintsigen, mask, value);
+ MASKED_WRITE(s->errintsigen, mask >> 16, value >> 16);
+ sdhci_update_irq(s);
+ break;
+ case SDHC_ADMAERR:
+ MASKED_WRITE(s->admaerr, mask, value);
+ break;
+ case SDHC_ADMASYSADDR:
+ s->admasysaddr = (s->admasysaddr & (0xFFFFFFFF00000000ULL |
+ (uint64_t)mask)) | (uint64_t)value;
+ break;
+ case SDHC_ADMASYSADDR + 4:
+ s->admasysaddr = (s->admasysaddr & (0x00000000FFFFFFFFULL |
+ ((uint64_t)mask << 32))) | ((uint64_t)value << 32);
+ break;
+ case SDHC_FEAER:
+ s->acmd12errsts |= value;
+ s->errintsts |= (value >> 16) & s->errintstsen;
+ if (s->acmd12errsts) {
+ s->errintsts |= SDHC_EIS_CMD12ERR;
+ }
+ if (s->errintsts) {
+ s->norintsts |= SDHC_NIS_ERR;
+ }
+ sdhci_update_irq(s);
+ break;
+ default:
+ ERRPRINT("bad %ub write offset: addr[0x%04x] <- %u(0x%x)\n",
+ size, offset, value >> shift, value >> shift);
+ break;
+ }
+ DPRINT_L2("write %ub: addr[0x%04x] <- %u(0x%x)\n",
+ size, offset, value >> shift, value >> shift);
+}
+
+static uint64_t
+sdhci_readfn(void *opaque, hwaddr offset, unsigned size)
+{
+ SDHCIState *s = (SDHCIState *)opaque;
+
+ return SDHCI_GET_CLASS(s)->mem_read(s, offset, size);
+}
+
+static void
+sdhci_writefn(void *opaque, hwaddr off, uint64_t val, unsigned sz)
+{
+ SDHCIState *s = (SDHCIState *)opaque;
+
+ SDHCI_GET_CLASS(s)->mem_write(s, off, val, sz);
+}
+
+static const MemoryRegionOps sdhci_mmio_ops = {
+ .read = sdhci_readfn,
+ .write = sdhci_writefn,
+ .valid = {
+ .min_access_size = 1,
+ .max_access_size = 4,
+ .unaligned = false
+ },
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static inline unsigned int sdhci_get_fifolen(SDHCIState *s)
+{
+ switch (SDHC_CAPAB_BLOCKSIZE(s->capareg)) {
+ case 0:
+ return 512;
+ case 1:
+ return 1024;
+ case 2:
+ return 2048;
+ default:
+ hw_error("SDHC: unsupported value for maximum block size\n");
+ return 0;
+ }
+}
+
+static void sdhci_initfn(Object *obj)
+{
+ SDHCIState *s = SDHCI(obj);
+ DriveInfo *di;
+
+ di = drive_get_next(IF_SD);
+ s->card = sd_init(di ? di->bdrv : NULL, 0);
+ s->eject_cb = qemu_allocate_irqs(sdhci_insert_eject_cb, s, 1)[0];
+ s->ro_cb = qemu_allocate_irqs(sdhci_card_readonly_cb, s, 1)[0];
+ sd_set_cb(s->card, s->ro_cb, s->eject_cb);
+
+ s->insert_timer = qemu_new_timer_ns(vm_clock, sdhci_raise_insertion_irq, s);
+ s->transfer_timer = qemu_new_timer_ns(vm_clock, sdhci_do_data_transfer, s);
+}
+
+static void sdhci_uninitfn(Object *obj)
+{
+ SDHCIState *s = SDHCI(obj);
+
+ qemu_del_timer(s->insert_timer);
+ qemu_free_timer(s->insert_timer);
+ qemu_del_timer(s->transfer_timer);
+ qemu_free_timer(s->transfer_timer);
+ qemu_free_irqs(&s->eject_cb);
+ qemu_free_irqs(&s->ro_cb);
+
+ if (s->fifo_buffer) {
+ g_free(s->fifo_buffer);
+ s->fifo_buffer = NULL;
+ }
+}
+
+const VMStateDescription sdhci_vmstate = {
+ .name = "sdhci",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(sdmasysad, SDHCIState),
+ VMSTATE_UINT16(blksize, SDHCIState),
+ VMSTATE_UINT16(blkcnt, SDHCIState),
+ VMSTATE_UINT32(argument, SDHCIState),
+ VMSTATE_UINT16(trnmod, SDHCIState),
+ VMSTATE_UINT16(cmdreg, SDHCIState),
+ VMSTATE_UINT32_ARRAY(rspreg, SDHCIState, 4),
+ VMSTATE_UINT32(prnsts, SDHCIState),
+ VMSTATE_UINT8(hostctl, SDHCIState),
+ VMSTATE_UINT8(pwrcon, SDHCIState),
+ VMSTATE_UINT8(blkgap, SDHCIState),
+ VMSTATE_UINT8(wakcon, SDHCIState),
+ VMSTATE_UINT16(clkcon, SDHCIState),
+ VMSTATE_UINT8(timeoutcon, SDHCIState),
+ VMSTATE_UINT8(admaerr, SDHCIState),
+ VMSTATE_UINT16(norintsts, SDHCIState),
+ VMSTATE_UINT16(errintsts, SDHCIState),
+ VMSTATE_UINT16(norintstsen, SDHCIState),
+ VMSTATE_UINT16(errintstsen, SDHCIState),
+ VMSTATE_UINT16(norintsigen, SDHCIState),
+ VMSTATE_UINT16(errintsigen, SDHCIState),
+ VMSTATE_UINT16(acmd12errsts, SDHCIState),
+ VMSTATE_UINT16(data_count, SDHCIState),
+ VMSTATE_UINT64(admasysaddr, SDHCIState),
+ VMSTATE_UINT8(stopped_state, SDHCIState),
+ VMSTATE_VBUFFER_UINT32(fifo_buffer, SDHCIState, 1, NULL, 0, buf_maxsz),
+ VMSTATE_TIMER(insert_timer, SDHCIState),
+ VMSTATE_TIMER(transfer_timer, SDHCIState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+/* Capabilities registers provide information on supported features of this
+ * specific host controller implementation */
+static Property sdhci_properties[] = {
+ DEFINE_PROP_HEX32("capareg", SDHCIState, capareg,
+ SDHC_CAPAB_REG_DEFAULT),
+ DEFINE_PROP_HEX32("maxcurr", SDHCIState, maxcurr, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void sdhci_realize(DeviceState *dev, Error ** errp)
+{
+ SDHCIState *s = SDHCI(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+
+ s->buf_maxsz = sdhci_get_fifolen(s);
+ s->fifo_buffer = g_malloc0(s->buf_maxsz);
+ sysbus_init_irq(sbd, &s->irq);
+ memory_region_init_io(&s->iomem, &sdhci_mmio_ops, s, "sdhci",
+ SDHC_REGISTERS_MAP_SIZE);
+ sysbus_init_mmio(sbd, &s->iomem);
+}
+
+static void sdhci_generic_reset(DeviceState *ds)
+{
+ SDHCIState *s = SDHCI(ds);
+ SDHCI_GET_CLASS(s)->reset(s);
+}
+
+static void sdhci_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SDHCIClass *k = SDHCI_CLASS(klass);
+
+ dc->vmsd = &sdhci_vmstate;
+ dc->props = sdhci_properties;
+ dc->reset = sdhci_generic_reset;
+ dc->realize = sdhci_realize;
+
+ k->reset = sdhci_reset;
+ k->mem_read = sdhci_read;
+ k->mem_write = sdhci_write;
+ k->send_command = sdhci_send_command;
+ k->can_issue_command = sdhci_can_issue_command;
+ k->data_transfer = sdhci_data_transfer;
+ k->end_data_transfer = sdhci_end_transfer;
+ k->do_sdma_single = sdhci_sdma_transfer_single_block;
+ k->do_sdma_multi = sdhci_sdma_transfer_multi_blocks;
+ k->do_adma = sdhci_do_adma;
+ k->read_block_from_card = sdhci_read_block_from_card;
+ k->write_block_to_card = sdhci_write_block_to_card;
+ k->bdata_read = sdhci_read_dataport;
+ k->bdata_write = sdhci_write_dataport;
+}
+
+static const TypeInfo sdhci_type_info = {
+ .name = TYPE_SDHCI,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(SDHCIState),
+ .instance_init = sdhci_initfn,
+ .instance_finalize = sdhci_uninitfn,
+ .class_init = sdhci_class_init,
+ .class_size = sizeof(SDHCIClass)
+};
+
+static void sdhci_register_types(void)
+{
+ type_register_static(&sdhci_type_info);
+}
+
+type_init(sdhci_register_types)
diff --git a/hw/sd/ssi-sd.c b/hw/sd/ssi-sd.c
new file mode 100644
index 0000000..4d3c4f6
--- /dev/null
+++ b/hw/sd/ssi-sd.c
@@ -0,0 +1,274 @@
+/*
+ * SSI to SD card adapter.
+ *
+ * Copyright (c) 2007-2009 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licensed under the GNU GPL v2.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+
+#include "sysemu/blockdev.h"
+#include "hw/ssi.h"
+#include "hw/sd.h"
+
+//#define DEBUG_SSI_SD 1
+
+#ifdef DEBUG_SSI_SD
+#define DPRINTF(fmt, ...) \
+do { printf("ssi_sd: " fmt , ## __VA_ARGS__); } while (0)
+#define BADF(fmt, ...) \
+do { fprintf(stderr, "ssi_sd: error: " fmt , ## __VA_ARGS__); exit(1);} while (0)
+#else
+#define DPRINTF(fmt, ...) do {} while(0)
+#define BADF(fmt, ...) \
+do { fprintf(stderr, "ssi_sd: error: " fmt , ## __VA_ARGS__);} while (0)
+#endif
+
+typedef enum {
+ SSI_SD_CMD,
+ SSI_SD_CMDARG,
+ SSI_SD_RESPONSE,
+ SSI_SD_DATA_START,
+ SSI_SD_DATA_READ,
+} ssi_sd_mode;
+
+typedef struct {
+ SSISlave ssidev;
+ ssi_sd_mode mode;
+ int cmd;
+ uint8_t cmdarg[4];
+ uint8_t response[5];
+ int arglen;
+ int response_pos;
+ int stopping;
+ SDState *sd;
+} ssi_sd_state;
+
+/* State word bits. */
+#define SSI_SDR_LOCKED 0x0001
+#define SSI_SDR_WP_ERASE 0x0002
+#define SSI_SDR_ERROR 0x0004
+#define SSI_SDR_CC_ERROR 0x0008
+#define SSI_SDR_ECC_FAILED 0x0010
+#define SSI_SDR_WP_VIOLATION 0x0020
+#define SSI_SDR_ERASE_PARAM 0x0040
+#define SSI_SDR_OUT_OF_RANGE 0x0080
+#define SSI_SDR_IDLE 0x0100
+#define SSI_SDR_ERASE_RESET 0x0200
+#define SSI_SDR_ILLEGAL_COMMAND 0x0400
+#define SSI_SDR_COM_CRC_ERROR 0x0800
+#define SSI_SDR_ERASE_SEQ_ERROR 0x1000
+#define SSI_SDR_ADDRESS_ERROR 0x2000
+#define SSI_SDR_PARAMETER_ERROR 0x4000
+
+static uint32_t ssi_sd_transfer(SSISlave *dev, uint32_t val)
+{
+ ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, dev);
+
+ /* Special case: allow CMD12 (STOP TRANSMISSION) while reading data. */
+ if (s->mode == SSI_SD_DATA_READ && val == 0x4d) {
+ s->mode = SSI_SD_CMD;
+ /* There must be at least one byte delay before the card responds. */
+ s->stopping = 1;
+ }
+
+ switch (s->mode) {
+ case SSI_SD_CMD:
+ if (val == 0xff) {
+ DPRINTF("NULL command\n");
+ return 0xff;
+ }
+ s->cmd = val & 0x3f;
+ s->mode = SSI_SD_CMDARG;
+ s->arglen = 0;
+ return 0xff;
+ case SSI_SD_CMDARG:
+ if (s->arglen == 4) {
+ SDRequest request;
+ uint8_t longresp[16];
+ /* FIXME: Check CRC. */
+ request.cmd = s->cmd;
+ request.arg = (s->cmdarg[0] << 24) | (s->cmdarg[1] << 16)
+ | (s->cmdarg[2] << 8) | s->cmdarg[3];
+ DPRINTF("CMD%d arg 0x%08x\n", s->cmd, request.arg);
+ s->arglen = sd_do_command(s->sd, &request, longresp);
+ if (s->arglen <= 0) {
+ s->arglen = 1;
+ s->response[0] = 4;
+ DPRINTF("SD command failed\n");
+ } else if (s->cmd == 58) {
+ /* CMD58 returns R3 response (OCR) */
+ DPRINTF("Returned OCR\n");
+ s->arglen = 5;
+ s->response[0] = 1;
+ memcpy(&s->response[1], longresp, 4);
+ } else if (s->arglen != 4) {
+ BADF("Unexpected response to cmd %d\n", s->cmd);
+ /* Illegal command is about as near as we can get. */
+ s->arglen = 1;
+ s->response[0] = 4;
+ } else {
+ /* All other commands return status. */
+ uint32_t cardstatus;
+ uint16_t status;
+ /* CMD13 returns a 2-byte statuse work. Other commands
+ only return the first byte. */
+ s->arglen = (s->cmd == 13) ? 2 : 1;
+ cardstatus = (longresp[0] << 24) | (longresp[1] << 16)
+ | (longresp[2] << 8) | longresp[3];
+ status = 0;
+ if (((cardstatus >> 9) & 0xf) < 4)
+ status |= SSI_SDR_IDLE;
+ if (cardstatus & ERASE_RESET)
+ status |= SSI_SDR_ERASE_RESET;
+ if (cardstatus & ILLEGAL_COMMAND)
+ status |= SSI_SDR_ILLEGAL_COMMAND;
+ if (cardstatus & COM_CRC_ERROR)
+ status |= SSI_SDR_COM_CRC_ERROR;
+ if (cardstatus & ERASE_SEQ_ERROR)
+ status |= SSI_SDR_ERASE_SEQ_ERROR;
+ if (cardstatus & ADDRESS_ERROR)
+ status |= SSI_SDR_ADDRESS_ERROR;
+ if (cardstatus & CARD_IS_LOCKED)
+ status |= SSI_SDR_LOCKED;
+ if (cardstatus & (LOCK_UNLOCK_FAILED | WP_ERASE_SKIP))
+ status |= SSI_SDR_WP_ERASE;
+ if (cardstatus & SD_ERROR)
+ status |= SSI_SDR_ERROR;
+ if (cardstatus & CC_ERROR)
+ status |= SSI_SDR_CC_ERROR;
+ if (cardstatus & CARD_ECC_FAILED)
+ status |= SSI_SDR_ECC_FAILED;
+ if (cardstatus & WP_VIOLATION)
+ status |= SSI_SDR_WP_VIOLATION;
+ if (cardstatus & ERASE_PARAM)
+ status |= SSI_SDR_ERASE_PARAM;
+ if (cardstatus & (OUT_OF_RANGE | CID_CSD_OVERWRITE))
+ status |= SSI_SDR_OUT_OF_RANGE;
+ /* ??? Don't know what Parameter Error really means, so
+ assume it's set if the second byte is nonzero. */
+ if (status & 0xff)
+ status |= SSI_SDR_PARAMETER_ERROR;
+ s->response[0] = status >> 8;
+ s->response[1] = status;
+ DPRINTF("Card status 0x%02x\n", status);
+ }
+ s->mode = SSI_SD_RESPONSE;
+ s->response_pos = 0;
+ } else {
+ s->cmdarg[s->arglen++] = val;
+ }
+ return 0xff;
+ case SSI_SD_RESPONSE:
+ if (s->stopping) {
+ s->stopping = 0;
+ return 0xff;
+ }
+ if (s->response_pos < s->arglen) {
+ DPRINTF("Response 0x%02x\n", s->response[s->response_pos]);
+ return s->response[s->response_pos++];
+ }
+ if (sd_data_ready(s->sd)) {
+ DPRINTF("Data read\n");
+ s->mode = SSI_SD_DATA_START;
+ } else {
+ DPRINTF("End of command\n");
+ s->mode = SSI_SD_CMD;
+ }
+ return 0xff;
+ case SSI_SD_DATA_START:
+ DPRINTF("Start read block\n");
+ s->mode = SSI_SD_DATA_READ;
+ return 0xfe;
+ case SSI_SD_DATA_READ:
+ val = sd_read_data(s->sd);
+ if (!sd_data_ready(s->sd)) {
+ DPRINTF("Data read end\n");
+ s->mode = SSI_SD_CMD;
+ }
+ return val;
+ }
+ /* Should never happen. */
+ return 0xff;
+}
+
+static void ssi_sd_save(QEMUFile *f, void *opaque)
+{
+ SSISlave *ss = SSI_SLAVE(opaque);
+ ssi_sd_state *s = (ssi_sd_state *)opaque;
+ int i;
+
+ qemu_put_be32(f, s->mode);
+ qemu_put_be32(f, s->cmd);
+ for (i = 0; i < 4; i++)
+ qemu_put_be32(f, s->cmdarg[i]);
+ for (i = 0; i < 5; i++)
+ qemu_put_be32(f, s->response[i]);
+ qemu_put_be32(f, s->arglen);
+ qemu_put_be32(f, s->response_pos);
+ qemu_put_be32(f, s->stopping);
+
+ qemu_put_be32(f, ss->cs);
+}
+
+static int ssi_sd_load(QEMUFile *f, void *opaque, int version_id)
+{
+ SSISlave *ss = SSI_SLAVE(opaque);
+ ssi_sd_state *s = (ssi_sd_state *)opaque;
+ int i;
+
+ if (version_id != 1)
+ return -EINVAL;
+
+ s->mode = qemu_get_be32(f);
+ s->cmd = qemu_get_be32(f);
+ for (i = 0; i < 4; i++)
+ s->cmdarg[i] = qemu_get_be32(f);
+ for (i = 0; i < 5; i++)
+ s->response[i] = qemu_get_be32(f);
+ s->arglen = qemu_get_be32(f);
+ s->response_pos = qemu_get_be32(f);
+ s->stopping = qemu_get_be32(f);
+
+ ss->cs = qemu_get_be32(f);
+
+ return 0;
+}
+
+static int ssi_sd_init(SSISlave *dev)
+{
+ ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, dev);
+ DriveInfo *dinfo;
+
+ s->mode = SSI_SD_CMD;
+ dinfo = drive_get_next(IF_SD);
+ s->sd = sd_init(dinfo ? dinfo->bdrv : NULL, 1);
+ register_savevm(&dev->qdev, "ssi_sd", -1, 1, ssi_sd_save, ssi_sd_load, s);
+ return 0;
+}
+
+static void ssi_sd_class_init(ObjectClass *klass, void *data)
+{
+ SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
+
+ k->init = ssi_sd_init;
+ k->transfer = ssi_sd_transfer;
+ k->cs_polarity = SSI_CS_LOW;
+}
+
+static const TypeInfo ssi_sd_info = {
+ .name = "ssi-sd",
+ .parent = TYPE_SSI_SLAVE,
+ .instance_size = sizeof(ssi_sd_state),
+ .class_init = ssi_sd_class_init,
+};
+
+static void ssi_sd_register_types(void)
+{
+ type_register_static(&ssi_sd_info);
+}
+
+type_init(ssi_sd_register_types)