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/*
* QEMU-KVM Hypercall emulation
*
* Copyright (c) 2003-2004 Fabrice Bellard
* Copyright (c) 2006 Qumranet
*
* 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"
int use_hypercall_dev = 0;
static CharDriverState *vmchannel_hd;
typedef struct HypercallState {
int irq;
PCIDevice *pci_dev;
} HypercallState;
static void hp_ioport_write(void *opaque, uint32_t addr, uint32_t val)
{
//printf("hp_ioport_write, val=0x%x\n", val);
qemu_chr_write(vmchannel_hd, (const uint8_t*)&val, 1);
}
static uint32_t hp_ioport_read(void *opaque, uint32_t addr)
{
//printf("hp_ioport_read\n");
return 0;
}
/***********************************************************/
/* PCI Hypercall definitions */
typedef struct PCIHypercallState {
PCIDevice dev;
HypercallState hp;
} PCIHypercallState;
static void hp_map(PCIDevice *pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
PCIHypercallState *d = (PCIHypercallState *)pci_dev;
HypercallState *s = &d->hp;
register_ioport_write(addr, 16, 1, hp_ioport_write, s);
register_ioport_read(addr, 16, 1, hp_ioport_read, s);
}
void pci_hypercall_init(PCIBus *bus)
{
PCIHypercallState *d;
HypercallState *s;
uint8_t *pci_conf;
// If the vmchannel wasn't initialized, we don't want the Hypercall device in the guest
if (use_hypercall_dev == 0) {
return;
}
d = (PCIHypercallState *)pci_register_device(bus,
"Hypercall", sizeof(PCIHypercallState),
-1,
NULL, NULL);
pci_conf = d->dev.config;
pci_conf[0x00] = 0x02; // Qumranet vendor ID 0x5002
pci_conf[0x01] = 0x50;
pci_conf[0x02] = 0x58; // Qumranet DeviceID 0x2258
pci_conf[0x03] = 0x22;
pci_conf[0x09] = 0x00; // ProgIf
pci_conf[0x0a] = 0x00; // SubClass
pci_conf[0x0b] = 0x05; // BaseClass
pci_conf[0x0e] = 0x00; // header_type
pci_conf[0x3d] = 1; // interrupt pin 0
pci_register_io_region(&d->dev, 0, 0x100,
PCI_ADDRESS_SPACE_IO, hp_map);
s = &d->hp;
s->irq = 16; /* PCI interrupt */
s->pci_dev = (PCIDevice *)d;
}
static int vmchannel_can_read(void *opaque)
{
return 128;
}
static void vmchannel_read(void *opaque, const uint8_t *buf, int size)
{
int i;
//printf("vmchannel_read buf:%p, size:%d\n", buf, size);
for(i = 0; i < size; i++) {
readline_handle_byte(buf[i]);
}
}
void vmchannel_init(CharDriverState *hd)
{
vmchannel_hd = hd;
use_hypercall_dev = 1;
qemu_chr_add_read_handler(vmchannel_hd, vmchannel_can_read, vmchannel_read, NULL);
//vmchannel_start_input();
}
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