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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/pl181.c
parentce3b494cb504f96992f2d37ebc8f56deed202b06 (diff)
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/pl181.c')
-rw-r--r--hw/pl181.c515
1 files changed, 0 insertions, 515 deletions
diff --git a/hw/pl181.c b/hw/pl181.c
deleted file mode 100644
index 2527296776..0000000000
--- a/hw/pl181.c
+++ /dev/null
@@ -1,515 +0,0 @@
-/*
- * 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)