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095d087e1d
toaruos/modules/vbox.c
K. Lange 095d087e1d IRQ stuff
2018-07-21 16:02:39 +09:00

297 lines
7.7 KiB
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/* vim: tabstop=4 shiftwidth=4 noexpandtab
* This file is part of ToaruOS and is released under the terms
* of the NCSA / University of Illinois License - see LICENSE.md
* Copyright (C) 2016-2018 K. Lange
*
* VirtualBox Guest Additions driver
*/
#include <kernel/system.h>
#include <kernel/fs.h>
#include <kernel/printf.h>
#include <kernel/types.h>
#include <kernel/logging.h>
#include <kernel/pci.h>
#include <kernel/module.h>
#include <kernel/video.h>
#include <kernel/pipe.h>
#include <kernel/mouse.h>
#include <kernel/args.h>
#define VBOX_VENDOR_ID 0x80EE
#define VBOX_DEVICE_ID 0xCAFE
static void vbox_scan_pci(uint32_t device, uint16_t v, uint16_t d, void * extra) {
if (v == VBOX_VENDOR_ID && d == VBOX_DEVICE_ID) {
*((uint32_t *)extra) = device;
}
}
#define VMMDEV_VERSION 0x00010003
#define VBOX_REQUEST_HEADER_VERSION 0x10001
struct vbox_header {
uint32_t size;
uint32_t version;
uint32_t requestType;
int32_t rc;
uint32_t reserved1;
uint32_t reserved2;
};
struct vbox_guest_info {
struct vbox_header header;
uint32_t version;
uint32_t ostype;
};
struct vbox_guest_caps {
struct vbox_header header;
uint32_t caps;
};
struct vbox_ack_events {
struct vbox_header header;
uint32_t events;
};
struct vbox_display_change {
struct vbox_header header;
uint32_t xres;
uint32_t yres;
uint32_t bpp;
uint32_t eventack;
};
struct vbox_mouse {
struct vbox_header header;
uint32_t features;
int32_t x;
int32_t y;
};
#define EARLY_LOG_DEVICE 0x504
static uint32_t _vbox_write(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
for (unsigned int i = 0; i < size; ++i) {
outportb(EARLY_LOG_DEVICE, buffer[i]);
}
return size;
}
static fs_node_t vb = { .write = &_vbox_write };
static uint32_t vbox_device = 0;
static uint32_t vbox_port = 0x0;
static int vbox_irq = 0;
static struct vbox_ack_events * vbox_irq_ack;
static uint32_t vbox_phys_ack;
static struct vbox_display_change * vbox_disp;
static uint32_t vbox_phys_disp;
static struct vbox_mouse * vbox_m;
static uint32_t vbox_phys_mouse;
static struct vbox_mouse * vbox_mg;
static uint32_t vbox_phys_mouse_get;
static volatile uint32_t * vbox_vmmdev = 0;
static fs_node_t * mouse_pipe;
#define PACKETS_IN_PIPE 1024
#define DISCARD_POINT 32
static int vbox_irq_handler(struct regs *r) {
if (!vbox_vmmdev[2]) return 0;
fprintf(&vb, "IRQ IRQ IRQ\n");
vbox_irq_ack->events = vbox_vmmdev[2];
outportl(vbox_port, vbox_phys_ack);
irq_ack(vbox_irq);
outportl(vbox_port, vbox_phys_mouse_get);
unsigned int x, y;
if (lfb_vid_memory && lfb_resolution_x && lfb_resolution_y && vbox_mg->x && vbox_mg->y) {
x = ((unsigned int)vbox_mg->x * lfb_resolution_x) / 0xFFFF;
y = ((unsigned int)vbox_mg->y * lfb_resolution_y) / 0xFFFF;
} else {
x = vbox_mg->x;
y = vbox_mg->y;
}
mouse_device_packet_t packet;
packet.magic = MOUSE_MAGIC;
packet.x_difference = x;
packet.y_difference = y;
packet.buttons = 0;
mouse_device_packet_t bitbucket;
while (pipe_size(mouse_pipe) > (int)(DISCARD_POINT * sizeof(packet))) {
read_fs(mouse_pipe, 0, sizeof(packet), (uint8_t *)&bitbucket);
}
write_fs(mouse_pipe, 0, sizeof(packet), (uint8_t *)&packet);
outportl(vbox_port, vbox_phys_disp);
if (lfb_resolution_x && vbox_disp->xres && (vbox_disp->xres != lfb_resolution_x || vbox_disp->yres != lfb_resolution_y)) {
lfb_set_resolution(vbox_disp->xres, vbox_disp->yres);
}
return 1;
}
void vbox_set_log(void) {
debug_file = &vb;
}
#define VBOX_MOUSE_ON (1 << 0) | (1 << 4)
#define VBOX_MOUSE_OFF (0)
static void mouse_on_off(unsigned int status) {
vbox_m->header.size = sizeof(struct vbox_mouse);
vbox_m->header.version = VBOX_REQUEST_HEADER_VERSION;
vbox_m->header.requestType = 2;
vbox_m->header.rc = 0;
vbox_m->header.reserved1 = 0;
vbox_m->header.reserved2 = 0;
vbox_m->features = status;
vbox_m->x = 0;
vbox_m->y = 0;
outportl(vbox_port, vbox_phys_mouse);
}
static int ioctl_mouse(fs_node_t * node, int request, void * argp) {
if (request == 1) {
/* Disable */
mouse_on_off(VBOX_MOUSE_OFF);
return 0;
}
if (request == 2) {
/* Enable */
mouse_on_off(VBOX_MOUSE_ON);
return 0;
}
return -1;
}
static int vbox_check(void) {
pci_scan(vbox_scan_pci, -1, &vbox_device);
if (vbox_device) {
fprintf(&vb, "VirtualBox host detected, switching log to VirtualBox.\n");
if (args_present("vboxdebug")) {
vbox_set_log();
}
fprintf(&vb, "HELLO WORLD\n");
uintptr_t t = pci_read_field(vbox_device, PCI_BAR0, 4);
if (t > 0) {
vbox_port = (t & 0xFFFFFFF0);
}
uint16_t c = pci_read_field(vbox_device, PCI_COMMAND, 2);
fprintf(&vb, "Command register: 0x%4x\n", c);
if (!!(c & (1 << 10))) {
fprintf(&vb, "INterrupts areadisabled\n");
}
mouse_pipe = make_pipe(sizeof(mouse_device_packet_t) * PACKETS_IN_PIPE);
mouse_pipe->flags = FS_CHARDEVICE;
mouse_pipe->ioctl = ioctl_mouse;
vfs_mount("/dev/absmouse", mouse_pipe);
vbox_irq = pci_read_field(vbox_device, PCI_INTERRUPT_LINE, 1);
if (vbox_irq == 255) {
vbox_irq = 10; /* seems to work okay */
pci_write_field(vbox_device, PCI_INTERRUPT_LINE, 1, vbox_irq);
}
debug_print(WARNING, "(vbox) device IRQ is set to %d", vbox_irq);
fprintf(&vb, "irq line is %d\n", vbox_irq);
irq_install_handler(vbox_irq, vbox_irq_handler, "vbox");
uint32_t vbox_phys = 0;
struct vbox_guest_info * packet = (void*)kvmalloc_p(0x1000, &vbox_phys);
packet->header.size = sizeof(struct vbox_guest_info);
packet->header.version = VBOX_REQUEST_HEADER_VERSION;
packet->header.requestType = 50;
packet->header.rc = 0;
packet->header.reserved1 = 0;
packet->header.reserved2 = 0;
packet->version = VMMDEV_VERSION;
packet->ostype = 0;
outportl(vbox_port, vbox_phys);
struct vbox_guest_caps * caps = (void*)kvmalloc_p(0x1000, &vbox_phys);
caps->header.size = sizeof(struct vbox_guest_caps);
caps->header.version = VBOX_REQUEST_HEADER_VERSION;
caps->header.requestType = 55;
caps->header.rc = 0;
caps->header.reserved1 = 0;
caps->header.reserved2 = 0;
caps->caps = 1 << 2;
outportl(vbox_port, vbox_phys);
vbox_irq_ack = (void*)kvmalloc_p(0x1000, &vbox_phys_ack);
vbox_irq_ack->header.size = sizeof(struct vbox_ack_events);
vbox_irq_ack->header.version = VBOX_REQUEST_HEADER_VERSION;
vbox_irq_ack->header.requestType = 41;
vbox_irq_ack->header.rc = 0;
vbox_irq_ack->header.reserved1 = 0;
vbox_irq_ack->header.reserved2 = 0;
vbox_irq_ack->events = 0;
vbox_disp = (void*)kvmalloc_p(0x1000, &vbox_phys_disp);
vbox_disp->header.size = sizeof(struct vbox_display_change);
vbox_disp->header.version = VBOX_REQUEST_HEADER_VERSION;
vbox_disp->header.requestType = 51;
vbox_disp->header.rc = 0;
vbox_disp->header.reserved1 = 0;
vbox_disp->header.reserved2 = 0;
vbox_disp->xres = 0;
vbox_disp->yres = 0;
vbox_disp->bpp = 0;
vbox_disp->eventack = 1;
vbox_m = (void*)kvmalloc_p(0x1000, &vbox_phys_mouse);
mouse_on_off(VBOX_MOUSE_ON);
/* For use with later receives */
vbox_mg = (void*)kvmalloc_p(0x1000, &vbox_phys_mouse_get);
vbox_mg->header.size = sizeof(struct vbox_mouse);
vbox_mg->header.version = VBOX_REQUEST_HEADER_VERSION;
vbox_mg->header.requestType = 1;
vbox_mg->header.rc = 0;
vbox_mg->header.reserved1 = 0;
vbox_mg->header.reserved2 = 0;
/* device memory region mapping? */
{
uintptr_t t = pci_read_field(vbox_device, PCI_BAR1, 4);
fprintf(&vb, "mapping vmm_dev = 0x%x\n", t);
if (t > 0) {
vbox_vmmdev = (void *)(t & 0xFFFFFFF0);
}
uintptr_t fb_offset = (uintptr_t)vbox_vmmdev;
for (uintptr_t i = fb_offset; i <= fb_offset + 0x2000; i += 0x1000) {
dma_frame(get_page(i, 1, kernel_directory), 0, 1, i);
}
}
vbox_vmmdev[3] = 0xFFFFFFFF; /* Enable all for now */
}
return 0;
}
static int fini(void) {
return 0;
}
MODULE_DEF(vboxguest, vbox_check, fini);
MODULE_DEPENDS(lfbvideo);
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