kamkow1/mop3
1
1
Fork 0
Code Issues 4 Pull Requests Actions Packages Projects Releases Wiki Activity

Use a big-lock for kernel sychronization instead of fine-grained locking
All checks were successful
Build ISO image / build-and-deploy (push) Successful in 2m21s
Details
Build documentation / build-and-deploy (push) Successful in 54s
Details

Browse Source
This commit is contained in:
Kamil Kowalczyk
2026-04-27 18:06:02 +02:00
parent 68cdd8d6d2
commit e5ebd7f3ba
56 changed files with 212 additions and 1206 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
kernel/device/pci/pci.c
View File

@@ -16,114 +16,76 @@ static const struct pci_driver_info pci_driver_infos[] = {
{.class = 0x0C, .subclass = 0x03, .init = &pci_xhci_init},
};
static spin_lock_t pci_lock = SPIN_LOCK_INIT;
uint32_t pci_read32(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset) {
uint64_t fpci;
uint32_t addr = (uint32_t)((uint32_t)bus << 16) |
((uint32_t)slot << 11) |
((uint32_t)func << 8) |
(offset & 0xFC) |
((uint32_t)0x80000000);
spin_lock(&pci_lock, &fpci);
outl(PCI_CONFIG_ADDR, addr);
uint32_t r = inl(PCI_CONFIG_DATA);
spin_unlock(&pci_lock, fpci);
return r;
}
void pci_write32(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset, uint32_t value) {
uint64_t fpci;
uint32_t addr = (uint32_t)((uint32_t)bus << 16) |
((uint32_t)slot << 11) |
((uint32_t)func << 8) |
(offset & 0xFC) |
((uint32_t)0x80000000);
spin_lock(&pci_lock, &fpci);
outl(PCI_CONFIG_ADDR, addr);
outl(PCI_CONFIG_DATA, value);
spin_unlock(&pci_lock, fpci);
}
uint16_t pci_read16(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset) {
uint64_t fpci;
uint32_t addr = (uint32_t)((uint32_t)bus << 16) |
((uint32_t)slot << 11) |
((uint32_t)func << 8) |
(offset & 0xFC) |
((uint32_t)0x80000000);
spin_lock(&pci_lock, &fpci);
outl(PCI_CONFIG_ADDR, addr);
uint16_t r = inw(PCI_CONFIG_DATA + (offset & 2));
spin_unlock(&pci_lock, fpci);
return r;
}
void pci_write16(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset, uint16_t value) {
uint64_t fpci;
uint32_t addr = (uint32_t)((uint32_t)bus << 16) |
((uint32_t)slot << 11) |
((uint32_t)func << 8) |
(offset & 0xFC) |
((uint32_t)0x80000000);
spin_lock(&pci_lock, &fpci);
outl(PCI_CONFIG_ADDR, addr);
outw(PCI_CONFIG_DATA + (offset & 2), value);
spin_unlock(&pci_lock, fpci);
}
uint8_t pci_read8(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset) {
uint64_t fpci;
uint32_t addr = (uint32_t)((uint32_t)bus << 16) |
((uint32_t)slot << 11) |
((uint32_t)func << 8) |
(offset & 0xFC) |
((uint32_t)0x80000000);
spin_lock(&pci_lock, &fpci);
outl(PCI_CONFIG_ADDR, addr);
uint8_t r = inb(PCI_CONFIG_DATA + (offset & 3));
spin_unlock(&pci_lock, fpci);
return r;
}
void pci_write8(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset, uint8_t value) {
uint64_t fpci;
uint32_t addr = (uint32_t)((uint32_t)bus << 16) |
((uint32_t)slot << 11) |
((uint32_t)func << 8) |
(offset & 0xFC) |
((uint32_t)0x80000000);
spin_lock(&pci_lock, &fpci);
outl(PCI_CONFIG_ADDR, addr);
outb(PCI_CONFIG_DATA + (offset & 3), value);
spin_unlock(&pci_lock, fpci);
}
uint8_t pci_find_cap(uint8_t bus, uint8_t slot, uint8_t func, uint8_t cap_id) {