--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/hw/syborg_virtio.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,332 @@
+/*
+ * Virtio Syborg bindings
+ *
+ * Copyright (c) 2008 CodeSourcery
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "virtio.h"
+#include "syborg.h"
+#include "devtree.h"
+#include "virtio-net.h"
+#include "virtio-audio.h"
+#include "sysemu.h"
+
+//#define DEBUG_SYBORG_VIRTIO
+
+#ifdef DEBUG_SYBORG_VIRTIO
+#define DPRINTF(fmt, args...) \
+do { printf("syborg_virtio: " fmt , ##args); } while (0)
+#define BADF(fmt, args...) \
+do { fprintf(stderr, "syborg_virtio: error: " fmt , ##args); exit(1);} while (0)
+#else
+#define DPRINTF(fmt, args...) do {} while(0)
+#define BADF(fmt, args...) \
+do { fprintf(stderr, "syborg_virtio: error: " fmt , ##args);} while (0)
+#endif
+
+enum {
+ SYBORG_VIRTIO_ID = 0,
+ SYBORG_VIRTIO_DEVTYPE = 1,
+ SYBORG_VIRTIO_HOST_FEATURES = 2,
+ SYBORG_VIRTIO_GUEST_FEATURES = 3,
+ SYBORG_VIRTIO_QUEUE_BASE = 4,
+ SYBORG_VIRTIO_QUEUE_NUM = 5,
+ SYBORG_VIRTIO_QUEUE_SEL = 6,
+ SYBORG_VIRTIO_QUEUE_NOTIFY = 7,
+ SYBORG_VIRTIO_STATUS = 8,
+ SYBORG_VIRTIO_INT_ENABLE = 9,
+ SYBORG_VIRTIO_INT_STATUS = 10
+};
+
+#define SYBORG_VIRTIO_CONFIG 0x100
+
+/* Device independent interface. */
+
+typedef struct {
+ QEMUDevice *qdev;
+ VirtIODevice *vdev;
+ uint32_t int_enable;
+ qemu_irq irq;
+ int id;
+} syborg_virtio_state;
+
+static void syborg_virtio_update_irq(VirtIODevice *vdev)
+{
+ syborg_virtio_state *s = vdev->binding_dev;
+ int level;
+
+ level = s->int_enable & vdev->isr;
+ DPRINTF("IRQ %d\n", level);
+ qemu_set_irq(s->irq, level != 0);
+}
+
+static uint32_t syborg_virtio_readl(void *opaque, target_phys_addr_t offset)
+{
+ syborg_virtio_state *s = (syborg_virtio_state *)opaque;
+ VirtIODevice *vdev = s->vdev;
+ uint32_t ret;
+
+ DPRINTF("readl 0x%x\n", (int)offset);
+ offset &= 0xfff;
+ if (offset >= SYBORG_VIRTIO_CONFIG) {
+ return virtio_config_readl(vdev, offset - SYBORG_VIRTIO_CONFIG);
+ }
+ switch(offset >> 2) {
+ case SYBORG_VIRTIO_ID:
+ ret = SYBORG_ID_VIRTIO;
+ break;
+ case SYBORG_VIRTIO_DEVTYPE:
+ ret = s->id;
+ break;
+ case SYBORG_VIRTIO_HOST_FEATURES:
+ ret = vdev->get_features(vdev);
+ ret |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY);
+ break;
+ case SYBORG_VIRTIO_GUEST_FEATURES:
+ ret = vdev->features;
+ break;
+ case SYBORG_VIRTIO_QUEUE_BASE:
+ ret = virtio_get_vring_pa(vdev, vdev->queue_sel);
+ break;
+ case SYBORG_VIRTIO_QUEUE_NUM:
+ ret = virtio_get_vring_num(vdev, vdev->queue_sel);
+ break;
+ case SYBORG_VIRTIO_QUEUE_SEL:
+ ret = vdev->queue_sel;
+ break;
+ case SYBORG_VIRTIO_STATUS:
+ ret = vdev->status;
+ break;
+ case SYBORG_VIRTIO_INT_ENABLE:
+ ret = s->int_enable;
+ break;
+ case SYBORG_VIRTIO_INT_STATUS:
+ ret = vdev->isr;
+ break;
+ default:
+ BADF("Bad read offset 0x%x\n", (int)offset);
+ return 0;
+ }
+ return ret;
+}
+
+static void syborg_virtio_writel(void *opaque, target_phys_addr_t offset,
+ uint32_t value)
+{
+ syborg_virtio_state *s = (syborg_virtio_state *)opaque;
+ VirtIODevice *vdev = s->vdev;
+
+ DPRINTF("writel 0x%x = 0x%x\n", (int)offset, value);
+ offset &= 0xfff;
+ if (offset >= SYBORG_VIRTIO_CONFIG) {
+ return virtio_config_writel(vdev, offset - SYBORG_VIRTIO_CONFIG,
+ value);
+ }
+ switch (offset >> 2) {
+ case SYBORG_VIRTIO_GUEST_FEATURES:
+ if (vdev->set_features)
+ vdev->set_features(vdev, value);
+ vdev->features = value;
+ break;
+ case SYBORG_VIRTIO_QUEUE_BASE:
+ virtio_set_vring_addr(vdev, vdev->queue_sel, value);
+ break;
+ case SYBORG_VIRTIO_QUEUE_SEL:
+ if (value < VIRTIO_PCI_QUEUE_MAX)
+ vdev->queue_sel = value;
+ break;
+ case SYBORG_VIRTIO_QUEUE_NOTIFY:
+ virtio_kick(vdev, value);
+ break;
+ case SYBORG_VIRTIO_STATUS:
+ vdev->status = value & 0xFF;
+ if (vdev->status == 0)
+ virtio_reset(vdev);
+ break;
+ case SYBORG_VIRTIO_INT_ENABLE:
+ s->int_enable = value;
+ virtio_update_irq(vdev);
+ break;
+ case SYBORG_VIRTIO_INT_STATUS:
+ vdev->isr &= ~value;
+ virtio_update_irq(vdev);
+ break;
+ default:
+ BADF("Bad write offset 0x%x\n", (int)offset);
+ break;
+ }
+}
+
+static uint32_t syborg_virtio_readw(void *opaque, target_phys_addr_t offset)
+{
+ syborg_virtio_state *s = (syborg_virtio_state *)opaque;
+ VirtIODevice *vdev = s->vdev;
+
+ DPRINTF("readw 0x%x\n", (int)offset);
+ offset &= 0xfff;
+ if (offset >= SYBORG_VIRTIO_CONFIG) {
+ return virtio_config_readw(vdev, offset - SYBORG_VIRTIO_CONFIG);
+ }
+ BADF("Bad halfword read offset 0x%x\n", (int)offset);
+ return -1;
+}
+
+static void syborg_virtio_writew(void *opaque, target_phys_addr_t offset,
+ uint32_t value)
+{
+ syborg_virtio_state *s = (syborg_virtio_state *)opaque;
+ VirtIODevice *vdev = s->vdev;
+
+ DPRINTF("writew 0x%x = 0x%x\n", (int)offset, value);
+ offset &= 0xfff;
+ if (offset >= SYBORG_VIRTIO_CONFIG) {
+ return virtio_config_writew(vdev, offset - SYBORG_VIRTIO_CONFIG,
+ value);
+ }
+ BADF("Bad halfword write offset 0x%x\n", (int)offset);
+}
+
+static uint32_t syborg_virtio_readb(void *opaque, target_phys_addr_t offset)
+{
+ syborg_virtio_state *s = (syborg_virtio_state *)opaque;
+ VirtIODevice *vdev = s->vdev;
+
+ DPRINTF("readb 0x%x\n", (int)offset);
+ offset &= 0xfff;
+ if (offset >= SYBORG_VIRTIO_CONFIG) {
+ return virtio_config_readb(vdev, offset - SYBORG_VIRTIO_CONFIG);
+ }
+ BADF("Bad byte read offset 0x%x\n", (int)offset);
+ return -1;
+}
+
+static void syborg_virtio_writeb(void *opaque, target_phys_addr_t offset,
+ uint32_t value)
+{
+ syborg_virtio_state *s = (syborg_virtio_state *)opaque;
+ VirtIODevice *vdev = s->vdev;
+
+ DPRINTF("writeb 0x%x = 0x%x\n", (int)offset, value);
+ offset &= 0xfff;
+ if (offset >= SYBORG_VIRTIO_CONFIG) {
+ return virtio_config_writeb(vdev, offset - SYBORG_VIRTIO_CONFIG,
+ value);
+ }
+ BADF("Bad byte write offset 0x%x\n", (int)offset);
+}
+
+static CPUReadMemoryFunc *syborg_virtio_readfn[] = {
+ syborg_virtio_readb,
+ syborg_virtio_readw,
+ syborg_virtio_readl
+};
+
+static CPUWriteMemoryFunc *syborg_virtio_writefn[] = {
+ syborg_virtio_writeb,
+ syborg_virtio_writew,
+ syborg_virtio_writel
+};
+
+static void syborg_virtio_save_binding(VirtIODevice *vdev, QEMUFile *f)
+{
+ /* Nothing to do. */
+}
+
+static void syborg_virtio_load_binding(VirtIODevice *vdev, QEMUFile *f)
+{
+ /* Nothing to do. */
+}
+
+typedef struct {
+ QEMUDevice *qdev;
+} VirtIOSyborgArgs;
+
+static VirtIODevice *syborg_virtio_create(void *args, const char *name,
+ uint16_t vendor, uint16_t type,
+ size_t config_size,
+ size_t struct_size)
+{
+ VirtIODevice *vdev;
+ VirtIOSyborgArgs *p = args;
+ syborg_virtio_state *s;
+
+ s = (syborg_virtio_state *)qemu_mallocz(sizeof(syborg_virtio_state));
+ s->qdev = p->qdev;
+ qdev_set_opaque(s->qdev, s);
+ s->id = ((uint32_t)vendor << 16) | type;
+ qdev_get_irq(s->qdev, 0, &s->irq);
+
+ vdev = virtio_init_common(name, config_size, struct_size);
+ s->vdev = vdev;
+
+ vdev->binding_dev = s;
+ vdev->update_irq = syborg_virtio_update_irq;
+ vdev->save_binding = syborg_virtio_save_binding;
+ vdev->load_binding = syborg_virtio_load_binding;
+
+ return vdev;
+}
+
+/* Device specific bindings. */
+
+static void syborg_virtio_net_create(QEMUDevice *dev)
+{
+ int nic = nb_nics;
+ VirtIOSyborgArgs args;
+ args.qdev = dev;
+ /* FIXME: add net options. */
+ if (net_client_init("nic", "") < 0)
+ return;
+ nd_table[nic].model = "virtio-net";
+ virtio_net_init(syborg_virtio_create, &args, &nd_table[nic]);
+}
+
+static AudioState *audio_state;
+
+static void syborg_virtio_audio_create(QEMUDevice *dev)
+{
+ VirtIOSyborgArgs args;
+ args.qdev = dev;
+ if (!audio_state)
+ audio_state = AUD_init();
+ virtio_audio_init(syborg_virtio_create, &args, audio_state);
+}
+
+static QEMUDeviceClass *syborg_virtio_register_common(const char *name,
+ QDEVCreateFn create)
+{
+ QEMUDeviceClass *dc;
+ dc = qdev_new(name, create, 1);
+ qdev_add_registers(dc, syborg_virtio_readfn, syborg_virtio_writefn,
+ 0x1000);
+ return dc;
+}
+
+void syborg_virtio_register(void)
+{
+ QEMUDeviceClass *dc;
+ dc = syborg_virtio_register_common("syborg,virtio-net",
+ syborg_virtio_net_create);
+ /* FIXME */
+ //qdev_add_netdev(dc);
+ dc = syborg_virtio_register_common("syborg,virtio-audio",
+ syborg_virtio_audio_create);
+}