From ee0188e7af403d58fbe0f40720b7eb117b372cc4 Mon Sep 17 00:00:00 2001
From: TomW <TomW@localhost>
Date: Thu, 18 Jul 2013 21:20:05 +0100
Subject: [PATCH] Added missing SiS496 files from last commit.

---
 src/sis496.c | 137 +++++++++++++++++++++++++++++++++++++++++++++++++++
 src/sis496.h |   1 +
 2 files changed, 138 insertions(+)
 create mode 100644 src/sis496.c
 create mode 100644 src/sis496.h

diff --git a/src/sis496.c b/src/sis496.c
new file mode 100644
index 0000000..09829fb
--- /dev/null
+++ b/src/sis496.c
@@ -0,0 +1,137 @@
+#include <stdlib.h>
+#include "ibm.h"
+#include "device.h"
+#include "io.h"
+#include "mem.h"
+#include "pci.h"
+
+#include "sis496.h"
+
+typedef struct sis496_t
+{
+        uint8_t pci_conf[256];
+} sis496_t;
+
+void sis496_recalcmapping(sis496_t *sis496)
+{
+        if (sis496->pci_conf[0x44] & 0x10)
+        {
+                if (sis496->pci_conf[0x45] & 0x01)
+                        mem_sethandler(0xe0000, 0x8000, mem_read_ram,    mem_read_ramw,    mem_read_raml,    NULL,          NULL,           NULL,           NULL);
+                else
+                        mem_sethandler(0xe0000, 0x8000, mem_read_ram,    mem_read_ramw,    mem_read_raml,    mem_write_ram, mem_write_ramw, mem_write_raml, NULL);
+        }
+        else
+                mem_sethandler(0xe0000, 0x8000, mem_read_bios,   mem_read_biosw,   mem_read_biosl,   mem_write_ram, mem_write_ramw, mem_write_raml, NULL);        
+
+        if (sis496->pci_conf[0x44] & 0x20)
+        {
+                if (sis496->pci_conf[0x45] & 0x01)
+                        mem_sethandler(0xe8000, 0x8000, mem_read_ram,    mem_read_ramw,    mem_read_raml,    NULL,          NULL,           NULL,           NULL);
+                else
+                        mem_sethandler(0xe8000, 0x8000, mem_read_ram,    mem_read_ramw,    mem_read_raml,    mem_write_ram, mem_write_ramw, mem_write_raml, NULL);
+        }
+        else
+                mem_sethandler(0xe8000, 0x8000, mem_read_bios,   mem_read_biosw,   mem_read_biosl,   mem_write_ram, mem_write_ramw, mem_write_raml, NULL);        
+                
+        if (sis496->pci_conf[0x44] & 0x40)
+        {
+                if (sis496->pci_conf[0x45] & 0x01)
+                        mem_sethandler(0xf0000, 0x8000, mem_read_ram,    mem_read_ramw,    mem_read_raml,    NULL,          NULL,           NULL,           NULL);
+                else
+                        mem_sethandler(0xf0000, 0x8000, mem_read_ram,    mem_read_ramw,    mem_read_raml,    mem_write_ram, mem_write_ramw, mem_write_raml, NULL);
+        }
+        else
+                mem_sethandler(0xf0000, 0x8000, mem_read_bios,   mem_read_biosw,   mem_read_biosl,   mem_write_ram, mem_write_ramw, mem_write_raml, NULL);        
+                
+        if (sis496->pci_conf[0x44] & 0x80)
+        {
+                if (sis496->pci_conf[0x45] & 0x01)
+                        mem_sethandler(0xf8000, 0x8000, mem_read_ram,    mem_read_ramw,    mem_read_raml,    NULL,          NULL,           NULL,           NULL);
+                else
+                        mem_sethandler(0xf8000, 0x8000, mem_read_ram,    mem_read_ramw,    mem_read_raml,    mem_write_ram, mem_write_ramw, mem_write_raml, NULL);
+        }
+        else
+                mem_sethandler(0xf8000, 0x8000, mem_read_bios,   mem_read_biosw,   mem_read_biosl,   mem_write_ram, mem_write_ramw, mem_write_raml, NULL);        
+
+        flushmmucache();
+        shadowbios = (sis496->pci_conf[0x44] & 0xf0);
+}
+
+void sis496_write(int func, int addr, uint8_t val, void *p)
+{
+        sis496_t *sis496 = (sis496_t *)p;
+pclog("sis496_write : addr=%02x val=%02x\n", addr, val);
+        switch (addr)
+        {
+                case 0x44: /*Shadow configure*/
+                if ((sis496->pci_conf[0x44] & val) ^ 0xf0)
+                {
+                        sis496->pci_conf[0x44] = val;
+                        sis496_recalcmapping(sis496);
+                }
+                break;
+                case 0x45: /*Shadow configure*/
+                //if (val == 3)
+                //        output = 3;
+                if ((sis496->pci_conf[0x45] & val) ^ 0x01)
+                {
+                        sis496->pci_conf[0x45] = val;
+                        sis496_recalcmapping(sis496);
+                }
+                break;
+        }
+                
+        if ((addr >= 4 && addr < 8) || addr >= 0x40)
+           sis496->pci_conf[addr] = val;
+}
+
+uint8_t sis496_read(int func, int addr, void *p)
+{
+        sis496_t *sis496 = (sis496_t *)p;
+        
+        return sis496->pci_conf[addr];
+}
+ 
+void *sis496_init()
+{
+        sis496_t *sis496 = malloc(sizeof(sis496_t));
+        memset(sis496, 0, sizeof(sis496_t));
+        
+        pci_add_specific(5, sis496_read, sis496_write, sis496);
+        
+        sis496->pci_conf[0x00] = 0x39; /*SiS*/
+        sis496->pci_conf[0x01] = 0x10; 
+        sis496->pci_conf[0x02] = 0x96; /*496/497*/
+        sis496->pci_conf[0x03] = 0x04; 
+
+        sis496->pci_conf[0x04] = 7;
+        sis496->pci_conf[0x05] = 0;
+
+        sis496->pci_conf[0x06] = 0x80;
+        sis496->pci_conf[0x07] = 0x02;
+        
+        sis496->pci_conf[0x08] = 2; /*Device revision*/
+
+        sis496->pci_conf[0x09] = 0x00; /*Device class (PCI bridge)*/
+        sis496->pci_conf[0x0a] = 0x00;
+        sis496->pci_conf[0x0b] = 0x06;
+        
+        sis496->pci_conf[0x0e] = 0x00; /*Single function device*/
+}
+
+void sis496_close(void *p)
+{
+        sis496_t *sis496 = (sis496_t *)p;
+
+        free(sis496);
+}
+
+device_t sis496_device =
+{
+        "SiS 496/497",
+        sis496_init,
+        sis496_close,
+        NULL,
+        NULL
+};
diff --git a/src/sis496.h b/src/sis496.h
new file mode 100644
index 0000000..32a5371
--- /dev/null
+++ b/src/sis496.h
@@ -0,0 +1 @@
+extern device_t sis496_device;