Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block patches for 2.3

# gpg: Signature made Tue Mar 10 13:03:17 2015 GMT using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"

* remotes/kevin/tags/for-upstream: (73 commits)
  MAINTAINERS: Add jcody as blockjobs, block devices maintainer
  iotests: add O_DIRECT alignment probing test
  block/raw-posix: fix launching with failed disks
  MAINTAINERS: Add jsnow as IDE maintainer
  sheepdog: Fix misleading error messages in sd_snapshot_create()
  Add testcase for scsi-hd devices without drive property
  scsi-hd: fix property unset case
  block/vdi: Add locking for parallel requests
  iotests: Drop vpc from 004's and 104's format list
  iotests: Remove 006
  iotests: Fix 051's reference output
  virtio-blk: Remove the stale FIXME comment
  tests: Check QVIRTIO_F_ANY_LAYOUT flag in virtio-blk test
  libqos: Solve bug in interrupt checking when using MSIX in virtio-pci.c
  sheepdog: fix confused return values
  qtest/ahci: add fragmented dma test
  qtest/ahci: Add PIO and LBA48 tests
  qtest/ahci: Add DMA test variants
  libqos/ahci: add ahci command helpers
  qtest/ahci: Add a macro bootup routine
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 198 insertions, 0 deletions

diff --git a/tests/libqos/virtio-mmio.c b/tests/libqos/virtio-mmio.c
new file mode 100644
index 0000000000..b3e62e77d8
--- /dev/null
+++ b/tests/libqos/virtio-mmio.c
@@ -0,0 +1,198 @@
+/*
+ * libqos virtio MMIO driver
+ *
+ * Copyright (c) 2014 Marc Marí
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include <glib.h>
+#include <stdio.h>
+#include "libqtest.h"
+#include "libqos/virtio.h"
+#include "libqos/virtio-mmio.h"
+#include "libqos/malloc.h"
+#include "libqos/malloc-generic.h"
+
+static uint8_t qvirtio_mmio_config_readb(QVirtioDevice *d, uint64_t addr)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    return readb(dev->addr + addr);
+}
+
+static uint16_t qvirtio_mmio_config_readw(QVirtioDevice *d, uint64_t addr)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    return readw(dev->addr + addr);
+}
+
+static uint32_t qvirtio_mmio_config_readl(QVirtioDevice *d, uint64_t addr)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    return readl(dev->addr + addr);
+}
+
+static uint64_t qvirtio_mmio_config_readq(QVirtioDevice *d, uint64_t addr)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    return readq(dev->addr + addr);
+}
+
+static uint32_t qvirtio_mmio_get_features(QVirtioDevice *d)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    writel(dev->addr + QVIRTIO_MMIO_HOST_FEATURES_SEL, 0);
+    return readl(dev->addr + QVIRTIO_MMIO_HOST_FEATURES);
+}
+
+static void qvirtio_mmio_set_features(QVirtioDevice *d, uint32_t features)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    dev->features = features;
+    writel(dev->addr + QVIRTIO_MMIO_GUEST_FEATURES_SEL, 0);
+    writel(dev->addr + QVIRTIO_MMIO_GUEST_FEATURES, features);
+}
+
+static uint32_t qvirtio_mmio_get_guest_features(QVirtioDevice *d)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    return dev->features;
+}
+
+static uint8_t qvirtio_mmio_get_status(QVirtioDevice *d)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    return (uint8_t)readl(dev->addr + QVIRTIO_MMIO_DEVICE_STATUS);
+}
+
+static void qvirtio_mmio_set_status(QVirtioDevice *d, uint8_t status)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    writel(dev->addr + QVIRTIO_MMIO_DEVICE_STATUS, (uint32_t)status);
+}
+
+static bool qvirtio_mmio_get_queue_isr_status(QVirtioDevice *d, QVirtQueue *vq)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    uint32_t isr;
+
+    isr = readl(dev->addr + QVIRTIO_MMIO_INTERRUPT_STATUS) & 1;
+    if (isr != 0) {
+        writel(dev->addr + QVIRTIO_MMIO_INTERRUPT_ACK, 1);
+        return true;
+    }
+
+    return false;
+}
+
+static bool qvirtio_mmio_get_config_isr_status(QVirtioDevice *d)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    uint32_t isr;
+
+    isr = readl(dev->addr + QVIRTIO_MMIO_INTERRUPT_STATUS) & 2;
+    if (isr != 0) {
+        writel(dev->addr + QVIRTIO_MMIO_INTERRUPT_ACK, 2);
+        return true;
+    }
+
+    return false;
+}
+
+static void qvirtio_mmio_queue_select(QVirtioDevice *d, uint16_t index)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    writel(dev->addr + QVIRTIO_MMIO_QUEUE_SEL, (uint32_t)index);
+
+    g_assert_cmphex(readl(dev->addr + QVIRTIO_MMIO_QUEUE_PFN), ==, 0);
+}
+
+static uint16_t qvirtio_mmio_get_queue_size(QVirtioDevice *d)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    return (uint16_t)readl(dev->addr + QVIRTIO_MMIO_QUEUE_NUM_MAX);
+}
+
+static void qvirtio_mmio_set_queue_address(QVirtioDevice *d, uint32_t pfn)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    writel(dev->addr + QVIRTIO_MMIO_QUEUE_PFN, pfn);
+}
+
+static QVirtQueue *qvirtio_mmio_virtqueue_setup(QVirtioDevice *d,
+                                        QGuestAllocator *alloc, uint16_t index)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    QVirtQueue *vq;
+    uint64_t addr;
+
+    vq = g_malloc0(sizeof(*vq));
+    qvirtio_mmio_queue_select(d, index);
+    writel(dev->addr + QVIRTIO_MMIO_QUEUE_ALIGN, dev->page_size);
+
+    vq->index = index;
+    vq->size = qvirtio_mmio_get_queue_size(d);
+    vq->free_head = 0;
+    vq->num_free = vq->size;
+    vq->align = dev->page_size;
+    vq->indirect = (dev->features & QVIRTIO_F_RING_INDIRECT_DESC) != 0;
+    vq->event = (dev->features & QVIRTIO_F_RING_EVENT_IDX) != 0;
+
+    writel(dev->addr + QVIRTIO_MMIO_QUEUE_NUM, vq->size);
+
+    /* Check different than 0 */
+    g_assert_cmpint(vq->size, !=, 0);
+
+    /* Check power of 2 */
+    g_assert_cmpint(vq->size & (vq->size - 1), ==, 0);
+
+    addr = guest_alloc(alloc, qvring_size(vq->size, dev->page_size));
+    qvring_init(alloc, vq, addr);
+    qvirtio_mmio_set_queue_address(d, vq->desc / dev->page_size);
+
+    return vq;
+}
+
+static void qvirtio_mmio_virtqueue_kick(QVirtioDevice *d, QVirtQueue *vq)
+{
+    QVirtioMMIODevice *dev = (QVirtioMMIODevice *)d;
+    writel(dev->addr + QVIRTIO_MMIO_QUEUE_NOTIFY, vq->index);
+}
+
+const QVirtioBus qvirtio_mmio = {
+    .config_readb = qvirtio_mmio_config_readb,
+    .config_readw = qvirtio_mmio_config_readw,
+    .config_readl = qvirtio_mmio_config_readl,
+    .config_readq = qvirtio_mmio_config_readq,
+    .get_features = qvirtio_mmio_get_features,
+    .set_features = qvirtio_mmio_set_features,
+    .get_guest_features = qvirtio_mmio_get_guest_features,
+    .get_status = qvirtio_mmio_get_status,
+    .set_status = qvirtio_mmio_set_status,
+    .get_queue_isr_status = qvirtio_mmio_get_queue_isr_status,
+    .get_config_isr_status = qvirtio_mmio_get_config_isr_status,
+    .queue_select = qvirtio_mmio_queue_select,
+    .get_queue_size = qvirtio_mmio_get_queue_size,
+    .set_queue_address = qvirtio_mmio_set_queue_address,
+    .virtqueue_setup = qvirtio_mmio_virtqueue_setup,
+    .virtqueue_kick = qvirtio_mmio_virtqueue_kick,
+};
+
+QVirtioMMIODevice *qvirtio_mmio_init_device(uint64_t addr, uint32_t page_size)
+{
+    QVirtioMMIODevice *dev;
+    uint32_t magic;
+    dev = g_malloc0(sizeof(*dev));
+
+    magic = readl(addr + QVIRTIO_MMIO_MAGIC_VALUE);
+    g_assert(magic == ('v' | 'i' << 8 | 'r' << 16 | 't' << 24));
+
+    dev->addr = addr;
+    dev->page_size = page_size;
+    dev->vdev.device_type = readl(addr + QVIRTIO_MMIO_DEVICE_ID);
+
+    writel(addr + QVIRTIO_MMIO_GUEST_PAGE_SIZE, page_size);
+
+    return dev;
+}