--- /dev/null
+/*
+ * XEN platform fake pci device, formerly known as the event channel device
+ *
+ * Copyright (c) 2003-2004 Intel Corp.
+ * Copyright (c) 2006 XenSource
+ *
+ * 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"
+
+#include <xenguest.h>
+#include <xc_private.h>
+
+extern FILE *logfile;
+
+static void platform_ioport_write(void *opaque, uint32_t addr, uint32_t val)
+{
+ return;
+}
+
+static uint32_t platform_ioport_read(void *opaque, uint32_t addr)
+{
+ return 0;
+}
+
+static void platform_ioport_map(PCIDevice *pci_dev, int region_num,
+ uint32_t addr, uint32_t size, int type)
+{
+ register_ioport_write(addr, 16, 4, platform_ioport_write, NULL);
+ register_ioport_read(addr, 16, 1, platform_ioport_read, NULL);
+}
+
+static uint32_t platform_mmio_read(void *opaque, target_phys_addr_t addr)
+{
+ fprintf(logfile, "Warning: try read from xen platform mmio space\n");
+ return 0;
+}
+
+static void platform_mmio_write(void *opaque, target_phys_addr_t addr,
+ uint32_t val)
+{
+ fprintf(logfile, "Warning: try write to xen platform mmio space\n");
+ return;
+}
+
+static CPUReadMemoryFunc *platform_mmio_read_funcs[3] = {
+ platform_mmio_read,
+ platform_mmio_read,
+ platform_mmio_read,
+};
+
+static CPUWriteMemoryFunc *platform_mmio_write_funcs[3] = {
+ platform_mmio_write,
+ platform_mmio_write,
+ platform_mmio_write,
+};
+
+static void platform_mmio_map(PCIDevice *d, int region_num,
+ uint32_t addr, uint32_t size, int type)
+{
+ int mmio_io_addr;
+
+ mmio_io_addr = cpu_register_io_memory(0, platform_mmio_read_funcs,
+ platform_mmio_write_funcs, NULL);
+
+ cpu_register_physical_memory(addr, 0x1000000, mmio_io_addr);
+}
+
+struct pci_config_header {
+ uint16_t vendor_id;
+ uint16_t device_id;
+ uint16_t command;
+ uint16_t status;
+ uint8_t revision;
+ uint8_t api;
+ uint8_t subclass;
+ uint8_t class;
+ uint8_t cache_line_size; /* Units of 32 bit words */
+ uint8_t latency_timer; /* In units of bus cycles */
+ uint8_t header_type; /* Should be 0 */
+ uint8_t bist; /* Built in self test */
+ uint32_t base_address_regs[6];
+ uint32_t reserved1;
+ uint32_t reserved2;
+ uint32_t rom_addr;
+ uint32_t reserved3;
+ uint32_t reserved4;
+ uint8_t interrupt_line;
+ uint8_t interrupt_pin;
+ uint8_t min_gnt;
+ uint8_t max_lat;
+};
+
+void pci_xen_platform_init(PCIBus *bus)
+{
+ PCIDevice *d;
+ struct pci_config_header *pch;
+
+ printf("Register xen platform.\n");
+ d = pci_register_device(bus, "xen-platform", sizeof(PCIDevice), -1, NULL,
+ NULL);
+ pch = (struct pci_config_header *)d->config;
+ pch->vendor_id = 0xfffd;
+ pch->device_id = 0x0101;
+ pch->command = 3; /* IO and memory access */
+ pch->revision = 0;
+ pch->api = 0;
+ pch->subclass = 0x80; /* Other */
+ pch->class = 0xff; /* Unclassified device class */
+ pch->header_type = 0;
+ pch->interrupt_pin = 1;
+
+ pci_register_io_region(d, 0, 0x100, PCI_ADDRESS_SPACE_IO,
+ platform_ioport_map);
+
+ /* reserve 16MB mmio address for share memory*/
+ pci_register_io_region(d, 1, 0x1000000, PCI_ADDRESS_SPACE_MEM_PREFETCH,
+ platform_mmio_map);
+
+ register_savevm("platform", 0, 1, generic_pci_save, generic_pci_load, d);
+ printf("Done register platform.\n");
+}
projects / xen.git / commitdiff