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Add a syscall for creating a physical memory VMO

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This commit is contained in:
Drew Galbraith 2023-06-08 02:36:47 -07:00
parent 50201fe6df
commit 47e3d11060
4 changed files with 34 additions and 3 deletions
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16
zion/syscall/syscall.cpp
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@ -130,14 +130,20 @@ z_err_t MemoryObjectCreate(ZMemoryObjectCreateReq* req,
return Z_OK;
}
z_err_t MemoryObjectCreatePhysical(ZMemoryObjectCreatePhysicalReq* req,
ZMemoryObjectCreateResp* resp) {
auto& curr_proc = gScheduler->CurrentProcess();
auto vmmo_ref = MakeRefCounted<FixedMemoryObject>(req->paddr, req->size);
resp->vmmo_cap =
curr_proc.AddCapability(StaticCastRefPtr<MemoryObject>(vmmo_ref));
return Z_OK;
}
z_err_t TempPcieConfigObjectCreate(ZTempPcieConfigObjectCreateResp* resp) {
auto& curr_proc = gScheduler->CurrentProcess();
uint64_t pci_base, pci_size;
dbgln("Getting config");
RET_ERR(GetPciExtendedConfiguration(&pci_base, &pci_size));
dbgln("Making obj");
auto vmmo_ref = MakeRefCounted<FixedMemoryObject>(pci_base, pci_size);
dbgln("Adding cap");
resp->vmmo_cap =
curr_proc.AddCapability(StaticCastRefPtr<MemoryObject>(vmmo_ref));
resp->vmmo_size = pci_size;
@ -201,6 +207,10 @@ extern "C" z_err_t SyscallHandler(uint64_t call_id, void* req, void* resp) {
return MemoryObjectCreate(
reinterpret_cast<ZMemoryObjectCreateReq*>(req),
reinterpret_cast<ZMemoryObjectCreateResp*>(resp));
case Z_MEMORY_OBJECT_CREATE_PHYSICAL:
return MemoryObjectCreatePhysical(
reinterpret_cast<ZMemoryObjectCreatePhysicalReq*>(req),
reinterpret_cast<ZMemoryObjectCreateResp*>(resp));
case Z_TEMP_PCIE_CONFIG_OBJECT_CREATE:
return TempPcieConfigObjectCreate(
reinterpret_cast<ZTempPcieConfigObjectCreateResp*>(resp));