From f1b59303ab97642e224934fe841cc87b0632d3f4 Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Tue, 20 Oct 2020 18:38:41 +0200
Subject: [PATCH] Implemented VIA PIPC device PCI reset function and improved
 that of PIIX.

---
 src/chipset/intel_piix.c | 16 ++++++++++++++++
 src/chipset/via_pipc.c   | 39 ++++++++++++++++++++++++++++++++++-----
 2 files changed, 50 insertions(+), 5 deletions(-)

diff --git a/src/chipset/intel_piix.c b/src/chipset/intel_piix.c
index 85448bdde..4d2919219 100644
--- a/src/chipset/intel_piix.c
+++ b/src/chipset/intel_piix.c
@@ -1170,7 +1170,23 @@ piix_reset(void *p)
 	piix_write(0, 0xa8, 0x0f, p);
     }
 
+    if (dev->type == 5)
+	piix_write(0, 0xe1, 0x40, p);
     piix_write(1, 0x04, 0x00, p);
+    if (dev->type == 5) {
+	piix_write(1, 0x09, 0x8a, p);
+	piix_write(1, 0x10, 0xf1, p);
+	piix_write(1, 0x11, 0x01, p);
+	piix_write(1, 0x14, 0xf5, p);
+	piix_write(1, 0x15, 0x03, p);
+	piix_write(1, 0x18, 0x71, p);
+	piix_write(1, 0x19, 0x01, p);
+	piix_write(1, 0x1c, 0x75, p);
+	piix_write(1, 0x1d, 0x03, p);
+    } else
+	piix_write(1, 0x09, 0x80, p);
+    piix_write(1, 0x20, 0x01, p);
+    piix_write(1, 0x21, 0x00, p);
     piix_write(1, 0x41, 0x00, p);
     piix_write(1, 0x43, 0x00, p);
 
diff --git a/src/chipset/via_pipc.c b/src/chipset/via_pipc.c
index 6233ac488..4c4917002 100644
--- a/src/chipset/via_pipc.c
+++ b/src/chipset/via_pipc.c
@@ -805,6 +805,35 @@ pipc_write(int func, int addr, uint8_t val, void *priv)
 }
 
 
+static void
+pipc_reset(void *p)
+{
+    pipc_t *dev = (pipc_t *) p;
+    uint8_t pm_func = dev->usb[1] ? 4 : 3;
+
+    pipc_write(pm_func, 0x41, 0x00, p);
+    pipc_write(pm_func, 0x48, 0x01, p);
+    pipc_write(pm_func, 0x49, 0x00, p);
+
+    pipc_write(1, 0x04, 0x80, p);
+    pipc_write(1, 0x09, 0x85, p);
+    pipc_write(1, 0x10, 0xf1, p);
+    pipc_write(1, 0x11, 0x01, p);
+    pipc_write(1, 0x14, 0xf5, p);
+    pipc_write(1, 0x15, 0x03, p);
+    pipc_write(1, 0x18, 0x71, p);
+    pipc_write(1, 0x19, 0x01, p);
+    pipc_write(1, 0x1c, 0x75, p);
+    pipc_write(1, 0x1d, 0x03, p);
+    pipc_write(1, 0x20, 0x01, p);
+    pipc_write(1, 0x21, 0xcc, p);
+    if (dev->local <= VIA_PIPC_586B)
+	pipc_write(1, 0x40, 0x04, p);
+    else
+	pipc_write(1, 0x40, 0x00, p);
+}
+
+
 static void *
 pipc_init(const device_t *info)
 {
@@ -884,7 +913,7 @@ const device_t via_vt82c586b_device =
     VIA_PIPC_586B,
     pipc_init, 
     pipc_close, 
-    NULL,
+    pipc_reset,
     NULL,
     NULL,
     NULL,
@@ -898,7 +927,7 @@ const device_t via_vt82c596_device =
     VIA_PIPC_596A,
     pipc_init, 
     pipc_close, 
-    NULL,
+    pipc_reset,
     NULL,
     NULL,
     NULL,
@@ -913,7 +942,7 @@ const device_t via_vt82c596b_device =
     VIA_PIPC_596B,
     pipc_init, 
     pipc_close, 
-    NULL,
+    pipc_reset,
     NULL,
     NULL,
     NULL,
@@ -928,7 +957,7 @@ const device_t via_vt82c686a_device =
     VIA_PIPC_686A,
     pipc_init, 
     pipc_close, 
-    NULL,
+    pipc_reset,
     NULL,
     NULL,
     NULL,
@@ -943,7 +972,7 @@ const device_t via_vt82c686b_device =
     VIA_PIPC_686B,
     pipc_init, 
     pipc_close, 
-    NULL,
+    pipc_reset,
     NULL,
     NULL,
     NULL,