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#include <cstdint>
#include <generic/evdev.hpp>
#include <generic/vfs.hpp>
#include <klibc/string.hpp>
#include <generic/lock/mutex.hpp>
#include <generic/pmm.hpp>
#include <generic/hhdm.hpp>
#include <utils/align.hpp>
#include <utils/errno.hpp>
#include <utils/assert.hpp>
locks::mutex evdev_lock;
evdev::evdev_node evroot_node = {};
evdev::evdev_node* evhead_node = nullptr;
std::uint32_t evdev_ptr = 0;
evdev::evdev_node* evdev_lookup(char* path) {
evdev::evdev_node* current = evhead_node;
while(current) {
if(klibc::strcmp(current->name, path) == 0) {
return current;
}
}
return nullptr;
}
int __bitmap_size(int c) {
return ALIGNUP(c,8) / 8;
}
bool evdev_poll(file_descriptor* file, vfs_poll_type type) {
evdev::evdev_node* node = (evdev::evdev_node*)(file->fs_specific.tmpfs_pointer);
assert(node->main_ring, "say gex !!!11!11151");
if(type == vfs_poll_type::pollin) {
return node->main_ring->is_not_empty(file->other.queue, file->other.cycle);
} else if(type == vfs_poll_type::pollout) {
return true;
}
return false;
}
std::int32_t evdev_ioctl(file_descriptor* file, std::uint64_t req, void* arg) {
evdev::evdev_node* node = (evdev::evdev_node*)(file->fs_specific.tmpfs_pointer);
std::uint64_t size = _IOC_SIZE(req);
if (_IOC_DIR(req) == _IOC_READ && (_IOC_NR(req) & ~EV_MAX) == _IOC_NR(EVIOCGBIT(0, 0))) {
switch(_IOC_NR(req) & EV_MAX) {
case 0:
klibc::memcpy(arg,node->ev_bitmap->pool,__bitmap_size(EV_MAX));
return 0;
}
assert(0,"doing req %d",_IOC_NR(req) & EV_MAX);
} else {
switch(EVIOC_MASK_SIZE(req)) {
case EVIOCGNAME(0):
klibc::memcpy(arg, node->name, size > (std::uint64_t)klibc::strlen(node->name) ? size : (std::uint64_t)klibc::strlen(node->name));
return 0;
};
}
assert(0, "ioctl req 0x%p arg 0x%p path %s rev 0x%p",EVIOC_MASK_SIZE(req),arg,node->path,_IOC_NR(req) & EV_MAX);
return -EFAULT;
}
signed long evdev_read(file_descriptor* file, void* buffer, std::size_t count) {
evdev::evdev_node* node = (evdev::evdev_node*)(file->fs_specific.tmpfs_pointer);
assert(node->main_ring,"FAFASF");
return node->main_ring->receive((input_event*)buffer, count, &file->other.cycle, &file->other.queue);
}
void evdev::submit(int num, input_event event) {
evdev_lock.lock();
evdev::evdev_node* node = evhead_node;
while(node) {
if(node->num == num)
break;
}
assert(node, "hlehlpehspgfdkjfs");
assert(node->main_ring,"ffff");
node->main_ring->send(event);
}
int evdev::create(char* name, int type) {
evdev_lock.lock();
evdev::evdev_node* new_node = (evdev::evdev_node*)(pmm::freelist::alloc_4k() + etc::hhdm());
new_node->main_ring = new utils::ring_buffer<input_event>(256);
if(type == EVDEV_TYPE_KEYBOARD) {
new_node->ev_bitmap = new utils::bitmap(EV_MAX + 1);
new_node->ev_bitmap->set(EV_KEY);
new_node->ev_bitmap->set(EV_REP);
} else if(type == EVDEV_TYPE_MOUSE) {
new_node->ev_bitmap = new utils::bitmap(EV_MAX + 1);
new_node->ev_bitmap->set(EV_REL);
new_node->ev_bitmap->set(EV_SYN);
}
new_node->num = ++evdev_ptr;
klibc::__printfbuf(new_node->path, 256, "/event%d\r\n",new_node->num);
klibc::memcpy(new_node->name, name, klibc::strlen(name));
new_node->type = type;
new_node->next = evhead_node;
evhead_node = new_node;
return new_node->num;
}
std::int32_t evdev_readlink(filesystem* fs, char* path, char* buffer) {
(void)fs;
(void)path;
(void)buffer;
return -EINVAL;
}
std::int32_t evdev_create(filesystem* fs, char* path, vfs_file_type type, std::uint32_t mode) {
(void)fs;
(void)path;
(void)type;
(void)mode;
return -ENOTSUP;
}
signed long evdev_write(file_descriptor* file, void* buffer, std::size_t count) {
(void)file;
(void)buffer;
(void)count;
return -EACCES;
}
std::int32_t evdev_stat(file_descriptor* file, stat* out) {
evdev::evdev_node* node = (evdev::evdev_node*)(file->fs_specific.tmpfs_pointer);
klibc::memset(out, 0, sizeof(stat));
if(node->is_root) {
out->st_mode = S_IFDIR | 0666;
return 0;
}
out->st_size = 0;
out->st_blksize = 0;
out->st_blocks = 0;
out->st_mode = S_IFCHR | 0666;
out->st_ino = node->num;
return 0;
}
std::int32_t evdev_open(filesystem* fs, void* file_desc, char* path, bool is_directory) {
file_descriptor* fd = (file_descriptor*)file_desc;
if(klibc::strcmp(path, "/") == 0) {
fd->fs_specific.tmpfs_pointer = (std::uint64_t)&evroot_node;
return 0;
}
evdev_lock.lock();
if(is_directory)
return -EISDIR;
evdev::evdev_node* node = evdev_lookup(path);
fd->fs_specific.tmpfs_pointer = (std::uint64_t)node;
fd->vnode.read = evdev_read;
fd->vnode.ioctl = evdev_ioctl;
fd->vnode.write = evdev_write;
fd->vnode.stat = evdev_stat;
evdev_lock.unlock();
return 0;
}
void evdev::init_default(vfs::node* node) {
evroot_node.is_root = true;
klibc::memcpy(node->path, "/dev/input/\0\0", sizeof("/dev/input/\0\0") + 1);
node->fs->readlink = evdev_readlink;
node->fs->open = evdev_open;
node->fs->create = evdev_create;
}
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