From: Ali Saidi <saidi@eecs.umich.edu>
Date: Thu, 22 Jan 2004 05:08:48 +0000 (-0500)
Subject: updated tsunami_dma
X-Git-Tag: m5_1.0_tutorial~418
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=de17a0330443dac568f99d4fabaef9b6a8dcff46;p=gem5.git

updated tsunami_dma

dev/tsunami_dma.cc:
    decide actually differentiating between the different i/o requests
    would be a better idea
dev/tsunami_dma.hh:
    added mask and mode variables, incase they are needed
dev/tsunamireg.h:
    added some i/o port defs

--HG--
extra : convert_revision : 5c7a88a8f8c8725359737b399cfa80610149a5f4
---

diff --git a/dev/tsunami_dma.cc b/dev/tsunami_dma.cc
index d52cf2b8f..4b1dca74c 100644
--- a/dev/tsunami_dma.cc
+++ b/dev/tsunami_dma.cc
@@ -39,7 +39,8 @@ TsunamiDMA::read(MemReqPtr req, uint8_t *data)
  //   Addr daddr = (req->paddr & addr_mask) >> 6;
 //    ExecContext *xc = req->xc;
 //    int cpuid = xc->cpu_id;
-    *(uint64_t*)data = 0x00;
+     panic("I/O Read - va%#x size %d\n", req->vaddr, req->size);
+   // *(uint64_t*)data = 0x00;
 
     return No_Fault;
 }
@@ -50,7 +51,40 @@ TsunamiDMA::write(MemReqPtr req, const uint8_t *data)
     DPRINTF(Tsunami, "dma write - va=%#x size=%d IOPort=%#x\n",
             req->vaddr, req->size, req->vaddr & 0xfff);
 
-    //Addr daddr = (req->paddr & addr_mask) >> 6;
+    Addr daddr = (req->paddr & addr_mask);
+
+    switch(req->size) {
+        case sizeof(uint8_t):
+            switch(daddr) {
+                case TSDEV_PIC1_MASK:
+                    mask1 = *(uint8_t*)data;
+                    return No_Fault;
+                case TSDEV_PIC2_MASK:
+                    mask2 = *(uint8_t*)data;
+                    return No_Fault;
+                case TSDEV_DMA1_RESET:
+                    return No_Fault;
+                case TSDEV_DMA2_RESET:
+                    return No_Fault;
+                case TSDEV_DMA1_MODE:
+                    mode1 = *(uint8_t*)data;
+                    return No_Fault;
+                case TSDEV_DMA2_MODE:
+                    mode2 = *(uint8_t*)data;
+                    return No_Fault;
+                case TSDEV_DMA1_MASK:
+                case TSDEV_DMA2_MASK:
+                    return No_Fault;
+                default:
+                    panic("I/O Write - va%#x size %d\n", req->vaddr, req->size);
+            }
+        case sizeof(uint16_t):
+        case sizeof(uint32_t):
+        case sizeof(uint64_t):
+        default:
+            panic("I/O Write - invalid size - va %#x size %d\n", req->vaddr, req->size);
+    }
+
 
     return No_Fault;
 }
diff --git a/dev/tsunami_dma.hh b/dev/tsunami_dma.hh
index 4daa6946d..f23abce2d 100644
--- a/dev/tsunami_dma.hh
+++ b/dev/tsunami_dma.hh
@@ -45,6 +45,11 @@ class TsunamiDMA : public MmapDevice
 
   protected:
 
+      uint8_t mask1;
+      uint8_t mask2;
+      uint8_t mode1;
+      uint8_t mode2;
+
   public:
     TsunamiDMA(const std::string &name, /*Tsunami *t,*/
                Addr addr, Addr mask, MemoryController *mmu);
diff --git a/dev/tsunamireg.h b/dev/tsunamireg.h
index 12275fee2..b41b3994d 100644
--- a/dev/tsunamireg.h
+++ b/dev/tsunamireg.h
@@ -65,4 +65,14 @@
 #define TSDEV_DC_DREV       0x22
 #define TSDEV_DC_DSC2       0x23
 
+// I/O Ports
+#define TSDEV_PIC1_MASK     0x21
+#define TSDEV_PIC2_MASK     0xA1
+#define TSDEV_DMA1_RESET    0x0D
+#define TSDEV_DMA2_RESET    0xDA
+#define TSDEV_DMA1_MODE     0x0B
+#define TSDEV_DMA2_MODE     0xD6
+#define TSDEV_DMA1_MASK     0x0A
+#define TSDEV_DMA2_MASK     0xD4
+
 #endif // __TSUNAMIREG_H__