external/qemu 0.8.2

1 files changed, 167 insertions, 0 deletions

diff --git a/hw/prep_pci.c b/hw/prep_pci.c
new file mode 100644
index 0000000..a31b74c
--- /dev/null
+++ b/hw/prep_pci.c
@@ -0,0 +1,167 @@
+/*
+ * QEMU PREP PCI host
+ *
+ * Copyright (c) 2006 Fabrice Bellard
+ * 
+ * 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 "vl.h"
+typedef uint32_t pci_addr_t;
+#include "pci_host.h"
+
+typedef PCIHostState PREPPCIState;
+
+static void pci_prep_addr_writel(void* opaque, uint32_t addr, uint32_t val)
+{
+    PREPPCIState *s = opaque;
+    s->config_reg = val;
+}
+
+static uint32_t pci_prep_addr_readl(void* opaque, uint32_t addr)
+{
+    PREPPCIState *s = opaque;
+    return s->config_reg;
+}
+
+static inline uint32_t PPC_PCIIO_config(target_phys_addr_t addr)
+{
+    int i;
+
+    for(i = 0; i < 11; i++) {
+        if ((addr & (1 << (11 + i))) != 0)
+            break;
+    }
+    return (addr & 0x7ff) |  (i << 11);
+}
+
+static void PPC_PCIIO_writeb (void *opaque, target_phys_addr_t addr, uint32_t val)
+{
+    PREPPCIState *s = opaque;
+    pci_data_write(s->bus, PPC_PCIIO_config(addr), val, 1);
+}
+
+static void PPC_PCIIO_writew (void *opaque, target_phys_addr_t addr, uint32_t val)
+{
+    PREPPCIState *s = opaque;
+#ifdef TARGET_WORDS_BIGENDIAN
+    val = bswap16(val);
+#endif
+    pci_data_write(s->bus, PPC_PCIIO_config(addr), val, 2);
+}
+
+static void PPC_PCIIO_writel (void *opaque, target_phys_addr_t addr, uint32_t val)
+{
+    PREPPCIState *s = opaque;
+#ifdef TARGET_WORDS_BIGENDIAN
+    val = bswap32(val);
+#endif
+    pci_data_write(s->bus, PPC_PCIIO_config(addr), val, 4);
+}
+
+static uint32_t PPC_PCIIO_readb (void *opaque, target_phys_addr_t addr)
+{
+    PREPPCIState *s = opaque;
+    uint32_t val;
+    val = pci_data_read(s->bus, PPC_PCIIO_config(addr), 1);
+    return val;
+}
+
+static uint32_t PPC_PCIIO_readw (void *opaque, target_phys_addr_t addr)
+{
+    PREPPCIState *s = opaque;
+    uint32_t val;
+    val = pci_data_read(s->bus, PPC_PCIIO_config(addr), 2);
+#ifdef TARGET_WORDS_BIGENDIAN
+    val = bswap16(val);
+#endif
+    return val;
+}
+
+static uint32_t PPC_PCIIO_readl (void *opaque, target_phys_addr_t addr)
+{
+    PREPPCIState *s = opaque;
+    uint32_t val;
+    val = pci_data_read(s->bus, PPC_PCIIO_config(addr), 4);
+#ifdef TARGET_WORDS_BIGENDIAN
+    val = bswap32(val);
+#endif
+    return val;
+}
+
+static CPUWriteMemoryFunc *PPC_PCIIO_write[] = {
+    &PPC_PCIIO_writeb,
+    &PPC_PCIIO_writew,
+    &PPC_PCIIO_writel,
+};
+
+static CPUReadMemoryFunc *PPC_PCIIO_read[] = {
+    &PPC_PCIIO_readb,
+    &PPC_PCIIO_readw,
+    &PPC_PCIIO_readl,
+};
+
+static void prep_set_irq(PCIDevice *d, void *pic, int irq_num, int level)
+{
+    /* XXX: we do not simulate the hardware - we rely on the BIOS to
+       set correctly for irq line field */
+    pic_set_irq(d->config[PCI_INTERRUPT_LINE], level);
+}
+
+PCIBus *pci_prep_init(void)
+{
+    PREPPCIState *s;
+    PCIDevice *d;
+    int PPC_io_memory;
+
+    s = qemu_mallocz(sizeof(PREPPCIState));
+    s->bus = pci_register_bus(prep_set_irq, NULL, 0);
+
+    register_ioport_write(0xcf8, 4, 4, pci_prep_addr_writel, s);
+    register_ioport_read(0xcf8, 4, 4, pci_prep_addr_readl, s);
+
+    register_ioport_write(0xcfc, 4, 1, pci_host_data_writeb, s);
+    register_ioport_write(0xcfc, 4, 2, pci_host_data_writew, s);
+    register_ioport_write(0xcfc, 4, 4, pci_host_data_writel, s);
+    register_ioport_read(0xcfc, 4, 1, pci_host_data_readb, s);
+    register_ioport_read(0xcfc, 4, 2, pci_host_data_readw, s);
+    register_ioport_read(0xcfc, 4, 4, pci_host_data_readl, s);
+
+    PPC_io_memory = cpu_register_io_memory(0, PPC_PCIIO_read, 
+                                           PPC_PCIIO_write, s);
+    cpu_register_physical_memory(0x80800000, 0x00400000, PPC_io_memory);
+
+    /* PCI host bridge */ 
+    d = pci_register_device(s->bus, "PREP Host Bridge - Motorola Raven", 
+                            sizeof(PCIDevice), 0, NULL, NULL);
+    d->config[0x00] = 0x57; // vendor_id : Motorola
+    d->config[0x01] = 0x10;
+    d->config[0x02] = 0x01; // device_id : Raven
+    d->config[0x03] = 0x48;
+    d->config[0x08] = 0x00; // revision
+    d->config[0x0A] = 0x00; // class_sub = pci host
+    d->config[0x0B] = 0x06; // class_base = PCI_bridge
+    d->config[0x0C] = 0x08; // cache_line_size
+    d->config[0x0D] = 0x10; // latency_timer
+    d->config[0x0E] = 0x00; // header_type
+    d->config[0x34] = 0x00; // capabilities_pointer
+
+    return s->bus;
+}
+