From f7384bf0851fff772562fb622e4c8fcc55289128 Mon Sep 17 00:00:00 2001
From: SarahW <pcem@pcem-emulator.co.uk>
Date: Sat, 24 Feb 2018 15:52:28 +0000
Subject: [PATCH] Display warning when a PCI device can not be initialised due
 to insufficient available PCI slots.

---
 src/device.c | 3 +++
 src/device.h | 2 ++
 src/pci.c    | 5 +++++
 3 files changed, 10 insertions(+)

diff --git a/src/device.c b/src/device.c
index c94b7b2..1e0572f 100644
--- a/src/device.c
+++ b/src/device.c
@@ -9,6 +9,7 @@ static void *device_priv[256];
 static device_t *devices[256];
 
 static device_t *current_device;
+char *current_device_name = NULL;
 
 void device_init()
 {
@@ -27,6 +28,7 @@ void device_add(device_t *d)
                 fatal("device_add : too many devices\n");
         
         current_device = d;
+        current_device_name = d->name;
         
         if (d->init != NULL)
         {
@@ -37,6 +39,7 @@ void device_add(device_t *d)
         
         devices[c] = d;
         device_priv[c] = priv;        
+        current_device_name = NULL;
 }
 
 void device_close_all()
diff --git a/src/device.h b/src/device.h
index 67bdda1..38a46bc 100644
--- a/src/device.h
+++ b/src/device.h
@@ -44,6 +44,8 @@ void device_speed_changed();
 void device_force_redraw();
 void device_add_status_info(char *s, int max_len);
 
+extern char *current_device_name;
+
 int device_get_config_int(char *name);
 char *device_get_config_string(char *name);
 
diff --git a/src/pci.c b/src/pci.c
index 8e9694d..8102fd7 100644
--- a/src/pci.c
+++ b/src/pci.c
@@ -1,4 +1,5 @@
 #include "ibm.h"
+#include "device.h"
 #include "io.h"
 #include "mem.h"
 #include "pic.h"
@@ -218,5 +219,9 @@ int pci_add(uint8_t (*read)(int func, int addr, void *priv), void (*write)(int f
                 }
         }
         
+        if (current_device_name)
+                warning("Failed to initialise PCI device '%s' due to insufficient available slots", current_device_name);
+        else
+                warning("Failed to initialise PCI device due to insufficient available slots");
         return -1;
 }