First iteration of denali server

sys/denali/denali_server.cpp

@@ -0,0 +1,44 @@
+#include "denali_server.h"
+
+#include <mammoth/debug.h>
+#include <zcall.h>
+
+DenaliServer::DenaliServer(uint64_t channel_cap, AhciDriver& driver)
+    : channel_cap_(channel_cap), driver_(driver) {}
+
+z_err_t DenaliServer::RunServer() {
+  while (true) {
+    uint64_t buff_size = kBuffSize;
+    uint64_t cap_size = 0;
+    uint64_t type = DENALI_INVALID;
+    RET_ERR(ZChannelRecv(channel_cap_, buff_size, read_buffer_, 0, nullptr,
+                         &type, &buff_size, &cap_size));
+    switch (type) {
+      case Z_INVALID:
+        dbgln(reinterpret_cast<char*>(read_buffer_));
+        break;
+      case DENALI_READ: {
+        DenaliRead* read_req = reinterpret_cast<DenaliRead*>(read_buffer_);
+        uint64_t memcap = 0;
+        DenaliReadResponse resp;
+        RET_ERR(HandleRead(*read_req, resp, memcap));
+        uint64_t caps_len = memcap ? 1 : 0;
+        RET_ERR(ZChannelSend(channel_cap_, 0, sizeof(DenaliReadResponse),
+                             reinterpret_cast<uint8_t*>(&resp), caps_len,
+                             &memcap));
+        break;
+      }
+      default:
+        dbgln("Invalid message type.");
+        return Z_ERR_UNIMPLEMENTED;
+    }
+  }
+}
+
+z_err_t DenaliServer::HandleRead(const DenaliRead& read,
+                                 DenaliReadResponse& resp, uint64_t& memcap) {
+  AhciDevice device;
+  RET_ERR(driver_.GetDevice(read.device_id, device));
+
+  return Z_OK;
+}