[PATCH 04/12] int10: Port off xf86ReadBIOS

[Adam Jackson]

If the linux vm86 backend changes look somewhat horrifying to you,
that's because you have taste.

Signed-off-by: Adam Jackson <ajax at redhat.com>
---
 hw/xfree86/int10/generic.c                | 16 +++++++++++++++-
 hw/xfree86/os-support/linux/int10/linux.c | 19 +++++++++++++++++--
 2 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/hw/xfree86/int10/generic.c b/hw/xfree86/int10/generic.c
index 73a1e5e..012d194 100644
--- a/hw/xfree86/int10/generic.c
+++ b/hw/xfree86/int10/generic.c
@@ -99,6 +99,20 @@ static void UnmapVRam(xf86Int10InfoPtr pInt);
 
 static void *sysMem = NULL;
 
+static Bool
+readIntVec(struct pci_device *dev, unsigned char *buf, int len)
+{
+    void *map;
+
+    if (!pci_device_map_legacy(dev, 0, len, 0, &map))
+        return FALSE;
+
+    memcpy(buf, map, len);
+    pci_device_unmap_legacy(dev, map, len);
+
+    return TRUE;
+}
+
 xf86Int10InfoPtr
 xf86ExtendedInitInt10(int entityIndex, int Flags)
 {
@@ -144,7 +158,7 @@ xf86ExtendedInitInt10(int entityIndex, int Flags)
                               PCI_DEV_MAP_FLAG_WRITABLE, &sysMem);
     INTPriv(pInt)->sysMem = sysMem;
 
-    if (xf86ReadBIOS(0, 0, base, LOW_PAGE_SIZE) < 0) {
+    if (!readIntVec(pInt->dev, base, LOW_PAGE_SIZE)) {
         xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Cannot read int vect\n");
         goto error1;
     }
diff --git a/hw/xfree86/os-support/linux/int10/linux.c b/hw/xfree86/os-support/linux/int10/linux.c
index 6181eb9..79b9a88 100644
--- a/hw/xfree86/os-support/linux/int10/linux.c
+++ b/hw/xfree86/os-support/linux/int10/linux.c
@@ -70,6 +70,20 @@ static Int10LinuxSubModuleState int10LinuxLoadSubModule(ScrnInfoPtr pScrn);
 
 #endif                          /* DoSubModules */
 
+static Bool
+readLegacy(struct pci_device *dev, unsigned char *buf, int base, int len)
+{
+    void *map;
+
+    if (!pci_device_map_legacy(dev, base, len, 0, &map))
+        return FALSE;
+
+    memcpy(buf, map, len);
+    pci_device_unmap_legacy(dev, man, len);
+
+    return TRUE;
+}
+
 xf86Int10InfoPtr
 xf86ExtendedInitInt10(int entityIndex, int Flags)
 {
@@ -222,7 +236,8 @@ xf86ExtendedInitInt10(int entityIndex, int Flags)
     Int10Current = pInt;
 
     DebugF("Mapping int area\n");
-    if (xf86ReadBIOS(0, 0, (unsigned char *) 0, LOW_PAGE_SIZE) < 0) {
+    /* note: yes, we really are writing the 0 page here */
+    if (!readLegacy(pInt->dev, (unsigned char *) 0, 0, LOW_PAGE_SIZE)) {
         xf86DrvMsg(screen, X_ERROR, "Cannot read int vect\n");
         goto error3;
     }
@@ -236,7 +251,7 @@ xf86ExtendedInitInt10(int entityIndex, int Flags)
         memset((void *) V_BIOS, 0, SYS_BIOS - V_BIOS);
         DebugF("Reading BIOS\n");
         for (cs = V_BIOS; cs < SYS_BIOS; cs += V_BIOS_SIZE)
-            if (xf86ReadBIOS(cs, 0, (void *) cs, V_BIOS_SIZE) < V_BIOS_SIZE)
+            if (!readLegacy(pInt->dev, (void *)cs, cs, V_BIOS_SIZE))
                 xf86DrvMsg(screen, X_WARNING,
                            "Unable to retrieve all of segment 0x%06lX.\n",
                            (long) cs);
-- 
1.9.3