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Allow mapping the PCI Config so Yellowstone can map it.

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This is a temp system call. Evemtually we should probably supply the
root process with all of the system physical memory objects.
This commit is contained in:
Drew Galbraith 2023-06-07 22:45:42 -07:00
parent 71a601362d
commit 56789400d7
9 changed files with 126 additions and 2 deletions
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18
zion/syscall/syscall.cpp
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@ -2,6 +2,7 @@
#include <stdint.h>
#include "boot/acpi.h"
#include "common/msr.h"
#include "debug/debug.h"
#include "include/zcall.h"
@ -129,6 +130,20 @@ z_err_t MemoryObjectCreate(ZMemoryObjectCreateReq* req,
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;
return Z_OK;
}
z_err_t ChannelCreate(ZChannelCreateResp* resp) {
auto& proc = gScheduler->CurrentProcess();
auto chan_pair = Channel::CreateChannelPair();
@ -186,6 +201,9 @@ 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_TEMP_PCIE_CONFIG_OBJECT_CREATE:
return TempPcieConfigObjectCreate(
reinterpret_cast<ZTempPcieConfigObjectCreateResp*>(resp));
case Z_CHANNEL_CREATE:
return ChannelCreate(reinterpret_cast<ZChannelCreateResp*>(resp));
case Z_CHANNEL_SEND: