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>

3 files changed, 484 insertions, 0 deletions

diff --git a/hw/ssi/Makefile.objs b/hw/ssi/Makefile.objs
index e69de29bb2..daada5c66a 100644
--- a/hw/ssi/Makefile.objs
+++ b/hw/ssi/Makefile.objs
@@ -0,0 +1,2 @@
+common-obj-$(CONFIG_PL022) += pl022.o
+common-obj-$(CONFIG_SSI) += ssi.o
diff --git a/hw/ssi/pl022.c b/hw/ssi/pl022.c
new file mode 100644
index 0000000000..536c2166fe
--- /dev/null
+++ b/hw/ssi/pl022.c
@@ -0,0 +1,308 @@
+/*
+ * Arm PrimeCell PL022 Synchronous Serial Port
+ *
+ * Copyright (c) 2007 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licensed under the GPL.
+ */
+
+#include "hw/sysbus.h"
+#include "hw/ssi.h"
+
+//#define DEBUG_PL022 1
+
+#ifdef DEBUG_PL022
+#define DPRINTF(fmt, ...) \
+do { printf("pl022: " fmt , ## __VA_ARGS__); } while (0)
+#define BADF(fmt, ...) \
+do { fprintf(stderr, "pl022: error: " fmt , ## __VA_ARGS__); exit(1);} while (0)
+#else
+#define DPRINTF(fmt, ...) do {} while(0)
+#define BADF(fmt, ...) \
+do { fprintf(stderr, "pl022: error: " fmt , ## __VA_ARGS__);} while (0)
+#endif
+
+#define PL022_CR1_LBM 0x01
+#define PL022_CR1_SSE 0x02
+#define PL022_CR1_MS  0x04
+#define PL022_CR1_SDO 0x08
+
+#define PL022_SR_TFE  0x01
+#define PL022_SR_TNF  0x02
+#define PL022_SR_RNE  0x04
+#define PL022_SR_RFF  0x08
+#define PL022_SR_BSY  0x10
+
+#define PL022_INT_ROR 0x01
+#define PL022_INT_RT  0x04
+#define PL022_INT_RX  0x04
+#define PL022_INT_TX  0x08
+
+typedef struct {
+    SysBusDevice busdev;
+    MemoryRegion iomem;
+    uint32_t cr0;
+    uint32_t cr1;
+    uint32_t bitmask;
+    uint32_t sr;
+    uint32_t cpsr;
+    uint32_t is;
+    uint32_t im;
+    /* The FIFO head points to the next empty entry.  */
+    int tx_fifo_head;
+    int rx_fifo_head;
+    int tx_fifo_len;
+    int rx_fifo_len;
+    uint16_t tx_fifo[8];
+    uint16_t rx_fifo[8];
+    qemu_irq irq;
+    SSIBus *ssi;
+} pl022_state;
+
+static const unsigned char pl022_id[8] =
+  { 0x22, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
+
+static void pl022_update(pl022_state *s)
+{
+    s->sr = 0;
+    if (s->tx_fifo_len == 0)
+        s->sr |= PL022_SR_TFE;
+    if (s->tx_fifo_len != 8)
+        s->sr |= PL022_SR_TNF;
+    if (s->rx_fifo_len != 0)
+        s->sr |= PL022_SR_RNE;
+    if (s->rx_fifo_len == 8)
+        s->sr |= PL022_SR_RFF;
+    if (s->tx_fifo_len)
+        s->sr |= PL022_SR_BSY;
+    s->is = 0;
+    if (s->rx_fifo_len >= 4)
+        s->is |= PL022_INT_RX;
+    if (s->tx_fifo_len <= 4)
+        s->is |= PL022_INT_TX;
+
+    qemu_set_irq(s->irq, (s->is & s->im) != 0);
+}
+
+static void pl022_xfer(pl022_state *s)
+{
+    int i;
+    int o;
+    int val;
+
+    if ((s->cr1 & PL022_CR1_SSE) == 0) {
+        pl022_update(s);
+        DPRINTF("Disabled\n");
+        return;
+    }
+
+    DPRINTF("Maybe xfer %d/%d\n", s->tx_fifo_len, s->rx_fifo_len);
+    i = (s->tx_fifo_head - s->tx_fifo_len) & 7;
+    o = s->rx_fifo_head;
+    /* ??? We do not emulate the line speed.
+       This may break some applications.  The are two problematic cases:
+        (a) A driver feeds data into the TX FIFO until it is full,
+         and only then drains the RX FIFO.  On real hardware the CPU can
+         feed data fast enough that the RX fifo never gets chance to overflow.
+        (b) A driver transmits data, deliberately allowing the RX FIFO to
+         overflow because it ignores the RX data anyway.
+
+       We choose to support (a) by stalling the transmit engine if it would
+       cause the RX FIFO to overflow.  In practice much transmit-only code
+       falls into (a) because it flushes the RX FIFO to determine when
+       the transfer has completed.  */
+    while (s->tx_fifo_len && s->rx_fifo_len < 8) {
+        DPRINTF("xfer\n");
+        val = s->tx_fifo[i];
+        if (s->cr1 & PL022_CR1_LBM) {
+            /* Loopback mode.  */
+        } else {
+            val = ssi_transfer(s->ssi, val);
+        }
+        s->rx_fifo[o] = val & s->bitmask;
+        i = (i + 1) & 7;
+        o = (o + 1) & 7;
+        s->tx_fifo_len--;
+        s->rx_fifo_len++;
+    }
+    s->rx_fifo_head = o;
+    pl022_update(s);
+}
+
+static uint64_t pl022_read(void *opaque, hwaddr offset,
+                           unsigned size)
+{
+    pl022_state *s = (pl022_state *)opaque;
+    int val;
+
+    if (offset >= 0xfe0 && offset < 0x1000) {
+        return pl022_id[(offset - 0xfe0) >> 2];
+    }
+    switch (offset) {
+    case 0x00: /* CR0 */
+      return s->cr0;
+    case 0x04: /* CR1 */
+      return s->cr1;
+    case 0x08: /* DR */
+        if (s->rx_fifo_len) {
+            val = s->rx_fifo[(s->rx_fifo_head - s->rx_fifo_len) & 7];
+            DPRINTF("RX %02x\n", val);
+            s->rx_fifo_len--;
+            pl022_xfer(s);
+        } else {
+            val = 0;
+        }
+        return val;
+    case 0x0c: /* SR */
+        return s->sr;
+    case 0x10: /* CPSR */
+        return s->cpsr;
+    case 0x14: /* IMSC */
+        return s->im;
+    case 0x18: /* RIS */
+        return s->is;
+    case 0x1c: /* MIS */
+        return s->im & s->is;
+    case 0x20: /* DMACR */
+        /* Not implemented.  */
+        return 0;
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "pl022_read: Bad offset %x\n", (int)offset);
+        return 0;
+    }
+}
+
+static void pl022_write(void *opaque, hwaddr offset,
+                        uint64_t value, unsigned size)
+{
+    pl022_state *s = (pl022_state *)opaque;
+
+    switch (offset) {
+    case 0x00: /* CR0 */
+        s->cr0 = value;
+        /* Clock rate and format are ignored.  */
+        s->bitmask = (1 << ((value & 15) + 1)) - 1;
+        break;
+    case 0x04: /* CR1 */
+        s->cr1 = value;
+        if ((s->cr1 & (PL022_CR1_MS | PL022_CR1_SSE))
+                   == (PL022_CR1_MS | PL022_CR1_SSE)) {
+            BADF("SPI slave mode not implemented\n");
+        }
+        pl022_xfer(s);
+        break;
+    case 0x08: /* DR */
+        if (s->tx_fifo_len < 8) {
+            DPRINTF("TX %02x\n", (unsigned)value);
+            s->tx_fifo[s->tx_fifo_head] = value & s->bitmask;
+            s->tx_fifo_head = (s->tx_fifo_head + 1) & 7;
+            s->tx_fifo_len++;
+            pl022_xfer(s);
+        }
+        break;
+    case 0x10: /* CPSR */
+        /* Prescaler.  Ignored.  */
+        s->cpsr = value & 0xff;
+        break;
+    case 0x14: /* IMSC */
+        s->im = value;
+        pl022_update(s);
+        break;
+    case 0x20: /* DMACR */
+        if (value) {
+            qemu_log_mask(LOG_UNIMP, "pl022: DMA not implemented\n");
+        }
+        break;
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "pl022_write: Bad offset %x\n", (int)offset);
+    }
+}
+
+static void pl022_reset(pl022_state *s)
+{
+    s->rx_fifo_len = 0;
+    s->tx_fifo_len = 0;
+    s->im = 0;
+    s->is = PL022_INT_TX;
+    s->sr = PL022_SR_TFE | PL022_SR_TNF;
+}
+
+static const MemoryRegionOps pl022_ops = {
+    .read = pl022_read,
+    .write = pl022_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static const VMStateDescription vmstate_pl022 = {
+    .name = "pl022_ssp",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
+    .fields      = (VMStateField[]) {
+        VMSTATE_UINT32(cr0, pl022_state),
+        VMSTATE_UINT32(cr1, pl022_state),
+        VMSTATE_UINT32(bitmask, pl022_state),
+        VMSTATE_UINT32(sr, pl022_state),
+        VMSTATE_UINT32(cpsr, pl022_state),
+        VMSTATE_UINT32(is, pl022_state),
+        VMSTATE_UINT32(im, pl022_state),
+        VMSTATE_INT32(tx_fifo_head, pl022_state),
+        VMSTATE_INT32(rx_fifo_head, pl022_state),
+        VMSTATE_INT32(tx_fifo_len, pl022_state),
+        VMSTATE_INT32(rx_fifo_len, pl022_state),
+        VMSTATE_UINT16(tx_fifo[0], pl022_state),
+        VMSTATE_UINT16(rx_fifo[0], pl022_state),
+        VMSTATE_UINT16(tx_fifo[1], pl022_state),
+        VMSTATE_UINT16(rx_fifo[1], pl022_state),
+        VMSTATE_UINT16(tx_fifo[2], pl022_state),
+        VMSTATE_UINT16(rx_fifo[2], pl022_state),
+        VMSTATE_UINT16(tx_fifo[3], pl022_state),
+        VMSTATE_UINT16(rx_fifo[3], pl022_state),
+        VMSTATE_UINT16(tx_fifo[4], pl022_state),
+        VMSTATE_UINT16(rx_fifo[4], pl022_state),
+        VMSTATE_UINT16(tx_fifo[5], pl022_state),
+        VMSTATE_UINT16(rx_fifo[5], pl022_state),
+        VMSTATE_UINT16(tx_fifo[6], pl022_state),
+        VMSTATE_UINT16(rx_fifo[6], pl022_state),
+        VMSTATE_UINT16(tx_fifo[7], pl022_state),
+        VMSTATE_UINT16(rx_fifo[7], pl022_state),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static int pl022_init(SysBusDevice *dev)
+{
+    pl022_state *s = FROM_SYSBUS(pl022_state, dev);
+
+    memory_region_init_io(&s->iomem, &pl022_ops, s, "pl022", 0x1000);
+    sysbus_init_mmio(dev, &s->iomem);
+    sysbus_init_irq(dev, &s->irq);
+    s->ssi = ssi_create_bus(&dev->qdev, "ssi");
+    pl022_reset(s);
+    vmstate_register(&dev->qdev, -1, &vmstate_pl022, s);
+    return 0;
+}
+
+static void pl022_class_init(ObjectClass *klass, void *data)
+{
+    SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
+
+    sdc->init = pl022_init;
+}
+
+static const TypeInfo pl022_info = {
+    .name          = "pl022",
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(pl022_state),
+    .class_init    = pl022_class_init,
+};
+
+static void pl022_register_types(void)
+{
+    type_register_static(&pl022_info);
+}
+
+type_init(pl022_register_types)
diff --git a/hw/ssi/ssi.c b/hw/ssi/ssi.c
new file mode 100644
index 0000000000..1264d9da23
--- /dev/null
+++ b/hw/ssi/ssi.c
@@ -0,0 +1,174 @@
+/*
+ * QEMU Synchronous Serial Interface support
+ *
+ * Copyright (c) 2009 CodeSourcery.
+ * Copyright (c) 2012 Peter A.G. Crosthwaite (peter.crosthwaite@petalogix.com)
+ * Copyright (c) 2012 PetaLogix Pty Ltd.
+ * 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 "hw/ssi.h"
+
+struct SSIBus {
+    BusState qbus;
+};
+
+#define TYPE_SSI_BUS "SSI"
+#define SSI_BUS(obj) OBJECT_CHECK(SSIBus, (obj), TYPE_SSI_BUS)
+
+static const TypeInfo ssi_bus_info = {
+    .name = TYPE_SSI_BUS,
+    .parent = TYPE_BUS,
+    .instance_size = sizeof(SSIBus),
+};
+
+static void ssi_cs_default(void *opaque, int n, int level)
+{
+    SSISlave *s = SSI_SLAVE(opaque);
+    bool cs = !!level;
+    assert(n == 0);
+    if (s->cs != cs) {
+        SSISlaveClass *ssc = SSI_SLAVE_GET_CLASS(s);
+        if (ssc->set_cs) {
+            ssc->set_cs(s, cs);
+        }
+    }
+    s->cs = cs;
+}
+
+static uint32_t ssi_transfer_raw_default(SSISlave *dev, uint32_t val)
+{
+    SSISlaveClass *ssc = SSI_SLAVE_GET_CLASS(dev);
+
+    if ((dev->cs && ssc->cs_polarity == SSI_CS_HIGH) ||
+            (!dev->cs && ssc->cs_polarity == SSI_CS_LOW) ||
+            ssc->cs_polarity == SSI_CS_NONE) {
+        return ssc->transfer(dev, val);
+    }
+    return 0;
+}
+
+static int ssi_slave_init(DeviceState *dev)
+{
+    SSISlave *s = SSI_SLAVE(dev);
+    SSISlaveClass *ssc = SSI_SLAVE_GET_CLASS(s);
+
+    if (ssc->transfer_raw == ssi_transfer_raw_default &&
+            ssc->cs_polarity != SSI_CS_NONE) {
+        qdev_init_gpio_in(&s->qdev, ssi_cs_default, 1);
+    }
+
+    return ssc->init(s);
+}
+
+static void ssi_slave_class_init(ObjectClass *klass, void *data)
+{
+    SSISlaveClass *ssc = SSI_SLAVE_CLASS(klass);
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->init = ssi_slave_init;
+    dc->bus_type = TYPE_SSI_BUS;
+    if (!ssc->transfer_raw) {
+        ssc->transfer_raw = ssi_transfer_raw_default;
+    }
+}
+
+static const TypeInfo ssi_slave_info = {
+    .name = TYPE_SSI_SLAVE,
+    .parent = TYPE_DEVICE,
+    .class_init = ssi_slave_class_init,
+    .class_size = sizeof(SSISlaveClass),
+    .abstract = true,
+};
+
+DeviceState *ssi_create_slave_no_init(SSIBus *bus, const char *name)
+{
+    return qdev_create(&bus->qbus, name);
+}
+
+DeviceState *ssi_create_slave(SSIBus *bus, const char *name)
+{
+    DeviceState *dev = ssi_create_slave_no_init(bus, name);
+
+    qdev_init_nofail(dev);
+    return dev;
+}
+
+SSIBus *ssi_create_bus(DeviceState *parent, const char *name)
+{
+    BusState *bus;
+    bus = qbus_create(TYPE_SSI_BUS, parent, name);
+    return FROM_QBUS(SSIBus, bus);
+}
+
+uint32_t ssi_transfer(SSIBus *bus, uint32_t val)
+{
+    BusChild *kid;
+    SSISlaveClass *ssc;
+    uint32_t r = 0;
+
+    QTAILQ_FOREACH(kid, &bus->qbus.children, sibling) {
+        SSISlave *slave = SSI_SLAVE(kid->child);
+        ssc = SSI_SLAVE_GET_CLASS(slave);
+        r |= ssc->transfer_raw(slave, val);
+    }
+
+    return r;
+}
+
+const VMStateDescription vmstate_ssi_slave = {
+    .name = "SSISlave",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
+    .fields      = (VMStateField[]) {
+        VMSTATE_BOOL(cs, SSISlave),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void ssi_slave_register_types(void)
+{
+    type_register_static(&ssi_bus_info);
+    type_register_static(&ssi_slave_info);
+}
+
+type_init(ssi_slave_register_types)
+
+typedef struct SSIAutoConnectArg {
+    qemu_irq **cs_linep;
+    SSIBus *bus;
+} SSIAutoConnectArg;
+
+static int ssi_auto_connect_slave(Object *child, void *opaque)
+{
+    SSIAutoConnectArg *arg = opaque;
+    SSISlave *dev = (SSISlave *)object_dynamic_cast(child, TYPE_SSI_SLAVE);
+    qemu_irq cs_line;
+
+    if (!dev) {
+        return 0;
+    }
+
+    cs_line = qdev_get_gpio_in(DEVICE(dev), 0);
+    qdev_set_parent_bus(DEVICE(dev), &arg->bus->qbus);
+    **arg->cs_linep = cs_line;
+    (*arg->cs_linep)++;
+    return 0;
+}
+
+void ssi_auto_connect_slaves(DeviceState *parent, qemu_irq *cs_line,
+                             SSIBus *bus)
+{
+    SSIAutoConnectArg arg = {
+        .cs_linep = &cs_line,
+        .bus = bus
+    };
+
+    object_child_foreach(OBJECT(parent), ssi_auto_connect_slave, &arg);
+}