PInS data on later cards (G200 and later) contains information about the

    physical bus used for the card. This allows accurate detection of PCI
    cards that use a PCI-to-PCI bridge with an AGP chip.
Correctly disable DRI on PCI cards used with pre-3.2 DRM. Previously the
    test was performed based on PCI ID (see above for why this is wrong)
    and was done *before* the DRM version was known.
Bug #3759: <https://bugs.freedesktop.org/show_bug.cgi?id=3759> Correctly
    determine the PLL reference frequency from the PInS data. Previously
    the wrong bit was tested. Blame the dumb programmer that used
    cut-and-paste (that would be me).

1 files changed, 25 insertions, 0 deletions

diff --git a/src/mga.h b/src/mga.h
index 46c4dbe..32ea21b 100644
--- a/src/mga.h
+++ b/src/mga.h
@@ -305,6 +305,26 @@ struct mga_VCO {
 };
 
 /**
+ * Host interface types that can be set by the card's BIOS.
+ */
+typedef enum {
+    MGA_HOST_UNKNOWN0 = 0,  /**< Meaning unknown. */
+    MGA_HOST_UNKNOWN1 = 1,  /**< Meaning unknown. */
+    MGA_HOST_UNKNOWN2 = 2,  /**< Meaning unknown. */
+    MGA_HOST_HYBRID = 3,    /**< AGP 4x for data xfers only. */
+
+    /**
+     * PCI interface.  Either native or via a universal PCI-to-PCI bridge
+     * chip.  The PCI G450 and PCI G550 cards are examples.
+     */
+    MGA_HOST_PCI = 4,
+
+    MGA_HOST_AGP_1x = 5,    /**< AGP 1x capable. */
+    MGA_HOST_AGP_2x = 6,    /**< AGP 2x capable. */
+    MGA_HOST_AGP_4x = 7     /**< AGP 4x capable. */
+} mga_host_t;
+
+/**
  * Card information derrived from BIOS PInS data.
  */
 struct mga_bios_values {
@@ -339,6 +359,11 @@ struct mga_bios_values {
      * by a capability bit stored in the PInS data.
      */
     Bool fast_bitblt;
+
+    /**
+     * Type of physical interface used for the card.
+     */
+    mga_host_t host_interface;
 };