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/*
* 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;
uint16_t subsystem_vendor_id;
uint16_t subsystem_id;
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 = 0x5853;
pch->device_id = 0x0001;
pch->command = 3; /* IO and memory access */
pch->revision = 1;
pch->api = 0;
pch->subclass = 0x80; /* Other */
pch->class = 0xff; /* Unclassified device class */
pch->header_type = 0;
pch->interrupt_pin = 1;
/* Microsoft WHQL requires non-zero subsystem IDs. */
/* http://www.pcisig.com/reflector/msg02205.html. */
pch->subsystem_vendor_id = pch->vendor_id; /* Duplicate vendor id. */
pch->subsystem_id = 0x0001; /* Hardcode sub-id as 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");
}
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