From f2b8df24208e3dc0522ed64f2b57e89268db61ae Mon Sep 17 00:00:00 2001
From: Andrew Schultz <alschult@umich.edu>
Date: Wed, 4 Feb 2004 15:03:50 -0500
Subject: Changes to support PciDev as a new base class for devices which use
 PCI

--HG--
extra : convert_revision : fc2bc4399665344220b1a7e345ae6d2df03c9960
---
 dev/pciconfigall.cc | 161 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 161 insertions(+)
 create mode 100644 dev/pciconfigall.cc

(limited to 'dev/pciconfigall.cc')

diff --git a/dev/pciconfigall.cc b/dev/pciconfigall.cc
new file mode 100644
index 000000000..85380c75c
--- /dev/null
+++ b/dev/pciconfigall.cc
@@ -0,0 +1,161 @@
+/* $Id$ */
+
+/* @file
+ * PCI Configspace implementation
+ */
+
+#include <deque>
+#include <string>
+#include <vector>
+
+#include "base/trace.hh"
+#include "cpu/exec_context.hh"
+#include "dev/scsi_ctrl.hh"
+#include "dev/pciconfigall.hh"
+#include "dev/pcidev.hh"
+#include "dev/tsunamireg.h"
+#include "dev/tsunami.hh"
+#include "mem/functional_mem/memory_control.hh"
+#include "sim/builder.hh"
+#include "sim/system.hh"
+
+using namespace std;
+
+PCIConfigAll::PCIConfigAll(const string &name, Tsunami *t,
+                           Addr addr, Addr mask, MemoryController *mmu)
+    : MmapDevice(name, addr, mask, mmu), tsunami(t)
+{
+    //Put back pointer in tsunami
+    tsunami->pciconfig = this;
+
+    // Make all the pointers to devices null
+    for(int x=0; x < MAX_PCI_DEV; x++)
+        for(int y=0; y < MAX_PCI_FUNC; y++)
+          devices[x][y] = NULL;
+}
+
+Fault
+PCIConfigAll::read(MemReqPtr &req, uint8_t *data)
+{
+    DPRINTF(PCIConfigAll, "read  va=%#x size=%d\n",
+            req->vaddr, req->size);
+
+    Addr daddr = (req->paddr & addr_mask);
+
+    int device = (daddr >> 11) & 0x1F;
+    int func = (daddr >> 8) & 0x7;
+    int reg = daddr & 0xFF;
+
+    if (devices[device][func] == NULL) {
+        switch (req->size) {
+           // case sizeof(uint64_t):
+           //     *(uint64_t*)data = 0xFFFFFFFFFFFFFFFF;
+           //     return No_Fault;
+            case sizeof(uint32_t):
+                *(uint32_t*)data = 0xFFFFFFFF;
+                return No_Fault;
+            case sizeof(uint16_t):
+                *(uint16_t*)data = 0xFFFF;
+                return No_Fault;
+            case sizeof(uint8_t):
+                *(uint8_t*)data = 0xFF;
+                return No_Fault;
+            default:
+                panic("invalid access size(?) for PCI configspace!\n");
+        }
+    } else {
+        switch (req->size) {
+            case sizeof(uint32_t):
+            case sizeof(uint16_t):
+            case sizeof(uint8_t):
+                devices[device][func]->ReadConfig(reg, req->size, data);
+                return No_Fault;
+            default:
+                panic("invalid access size(?) for PCI configspace!\n");
+        }
+    }
+
+    DPRINTFN("Tsunami PCI Configspace  ERROR: read  daddr=%#x size=%d\n", daddr, req->size);
+
+    return No_Fault;
+}
+
+Fault
+PCIConfigAll::write(MemReqPtr &req, const uint8_t *data)
+{
+
+    Addr daddr = (req->paddr & addr_mask);
+
+    int device = (daddr >> 11) & 0x1F;
+    int func = (daddr >> 8) & 0x7;
+    int reg = daddr & 0xFF;
+
+    union {
+        uint8_t byte_value;
+        uint16_t half_value;
+        uint32_t word_value;
+    };
+
+
+    if (devices[device][func] == NULL)
+        panic("Attempting to write to config space on non-existant device\n");
+    else {
+            switch (req->size) {
+            case sizeof(uint8_t):
+                byte_value = *(uint8_t*)data;
+                break;
+            case sizeof(uint16_t):
+                half_value = *(uint16_t*)data;
+                break;
+            case sizeof(uint32_t):
+                word_value = *(uint32_t*)data;
+                break;
+            default:
+                panic("invalid access size(?) for PCI configspace!\n");
+            }
+    }
+    DPRINTF(PCIConfigAll, "write - va=%#x size=%d data=%#x\n",
+            req->vaddr, req->size, word_value);
+    devices[device][func]->WriteConfig(reg, req->size, word_value);
+
+
+    return No_Fault;
+}
+
+
+void
+PCIConfigAll::serialize(std::ostream &os)
+{
+    // code should be written
+}
+
+void
+PCIConfigAll::unserialize(Checkpoint *cp, const std::string &section)
+{
+    //code should be written
+}
+
+BEGIN_DECLARE_SIM_OBJECT_PARAMS(PCIConfigAll)
+
+    SimObjectParam<Tsunami *> tsunami;
+    SimObjectParam<MemoryController *> mmu;
+    Param<Addr> addr;
+    Param<Addr> mask;
+
+END_DECLARE_SIM_OBJECT_PARAMS(PCIConfigAll)
+
+BEGIN_INIT_SIM_OBJECT_PARAMS(PCIConfigAll)
+
+    INIT_PARAM(tsunami, "Tsunami"),
+    INIT_PARAM(mmu, "Memory Controller"),
+    INIT_PARAM(addr, "Device Address"),
+    INIT_PARAM(mask, "Address Mask")
+
+END_INIT_SIM_OBJECT_PARAMS(PCIConfigAll)
+
+CREATE_SIM_OBJECT(PCIConfigAll)
+{
+    return new PCIConfigAll(getInstanceName(), tsunami, addr, mask, mmu);
+}
+
+REGISTER_SIM_OBJECT("PCIConfigAll", PCIConfigAll)
-- 
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