From: Jack Lange <jarusl@cs.northwestern.edu>
Date: Sat, 1 Aug 2009 03:38:29 +0000 (-0500)
Subject: added PCI irq lower function hook and added southbridge support
X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=commitdiff_plain;h=e7e8f9d5fc283afd15bc8385faf7449765fcbe26

added PCI irq lower function hook and added southbridge support
---

diff --git a/palacios/include/devices/pci.h b/palacios/include/devices/pci.h
index 62060c5..7ab67c2 100644
--- a/palacios/include/devices/pci.h
+++ b/palacios/include/devices/pci.h
@@ -121,10 +121,12 @@ struct pci_device {
 
 int v3_pci_set_irq_bridge(struct vm_device * pci_bus, int bus_num,
 			  int (*raise_pci_irq)(struct vm_device * dev, uint_t intr_line), 
+			  int (*lower_pci_irq)(struct vm_device * dev, uint_t intr_line), 
 			  struct vm_device * bridge_dev);
 
 
 int v3_pci_raise_irq(struct vm_device * pci_bus, int bus_num, struct pci_device * dev);
+int v3_pci_lower_irq(struct vm_device * pci_bus, int bus_num, struct pci_device * dev);
 
 struct pci_device * 
 v3_pci_register_device(struct vm_device * pci,
diff --git a/palacios/src/devices/pci.c b/palacios/src/devices/pci.c
index 606b38b..3a10e03 100644
--- a/palacios/src/devices/pci.c
+++ b/palacios/src/devices/pci.c
@@ -75,7 +75,8 @@ struct pci_bus {
     // Bitmap of the allocated device numbers
     uint8_t dev_map[MAX_BUS_DEVICES / 8];
 
-    int (*raise_pci_irq)(struct vm_device * dev, uint_t intr_line);
+    int (*raise_pci_irq)(struct vm_device * dev, uint_t intr_pin);
+    int (*lower_pci_irq)(struct vm_device * dev, uint_t intr_pin);
     struct vm_device * irq_bridge_dev;
 };
 
@@ -706,11 +707,13 @@ static inline int init_bars(struct pci_device * pci_dev) {
 
 int v3_pci_set_irq_bridge(struct  vm_device * pci_bus, int bus_num, 
 			  int (*raise_pci_irq)(struct vm_device * dev, uint_t intr_line), 
+			  int (*lower_pci_irq)(struct vm_device * dev, uint_t intr_line), 
 			  struct vm_device * bridge_dev) {
     struct pci_internal * pci_state = (struct pci_internal *)pci_bus->private_data;
 
 
     pci_state->bus_list[bus_num].raise_pci_irq = raise_pci_irq;
+    pci_state->bus_list[bus_num].lower_pci_irq = lower_pci_irq;
     pci_state->bus_list[bus_num].irq_bridge_dev = bridge_dev;
 
     return 0;
@@ -723,6 +726,13 @@ int v3_pci_raise_irq(struct vm_device * pci_bus, int bus_num, struct pci_device
    return bus->raise_pci_irq(bus->irq_bridge_dev, dev->config_header.intr_pin);
 }
 
+int v3_pci_lower_irq(struct vm_device * pci_bus, int bus_num, struct pci_device * dev) {
+   struct pci_internal * pci_state = (struct pci_internal *)pci_bus->private_data;
+   struct pci_bus * bus = &(pci_state->bus_list[bus_num]);
+
+   return bus->lower_pci_irq(bus->irq_bridge_dev, dev->config_header.intr_pin);
+}
+
 // if dev_num == -1, auto assign 
 struct pci_device * v3_pci_register_device(struct vm_device * pci,
 					   pci_device_type_t dev_type, 
diff --git a/palacios/src/devices/piix3.c b/palacios/src/devices/piix3.c
index b5f1e45..e6ece40 100644
--- a/palacios/src/devices/piix3.c
+++ b/palacios/src/devices/piix3.c
@@ -7,15 +7,11 @@
  * and the University of New Mexico.  You can find out more at 
  * http://www.v3vee.org
  *
- * Copyright (c) 2009, Lei Xia <lxia@northwestern.edu>
- * Copyright (c) 2009, Chang Seok Bae <jhuell@gmail.com>
  * Copyright (c) 2009, Jack Lange <jarusl@cs.northwestern.edu>
  * Copyright (c) 2009, The V3VEE Project <http://www.v3vee.org> 
  * All rights reserved.
  *
- * Author:  Lei Xia <lxia@northwestern.edu>
- *          Chang Seok Bae <jhuell@gmail.com>
- *          Jack Lange <jarusl@cs.northwestern.edu>
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
  *
  * This is free software.  You are permitted to use,
  * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
@@ -375,6 +371,20 @@ static int raise_pci_irq(struct vm_device * dev, uint_t intr_pin) {
 
 
 
+static int lower_pci_irq(struct vm_device * dev, uint_t intr_pin) {
+    struct v3_southbridge * piix3 = (struct v3_southbridge *)(dev->private_data);
+    struct pci_device * pci_dev = piix3->southbridge_pci;
+    struct piix3_config_space * piix3_cfg = (struct piix3_config_space *)(pci_dev->config_data);
+
+    PrintError("Lowering PCI IRQ %d\n", piix3_cfg->pirq_rc[intr_pin]);
+    
+    v3_lower_irq(dev->vm, piix3_cfg->pirq_rc[intr_pin]);
+
+    return 0;
+}
+
+
+
 static int piix_free(struct vm_device * dev) {
     return 0;
 }
@@ -417,7 +427,7 @@ static int setup_pci(struct vm_device * dev) {
 
     piix3->southbridge_pci = pci_dev;
 
-    v3_pci_set_irq_bridge(piix3->pci_bus, bus_num, raise_pci_irq, dev);
+    v3_pci_set_irq_bridge(piix3->pci_bus, bus_num, raise_pci_irq, lower_pci_irq, dev);
 
     reset_piix3(dev);