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-rw-r--r--linux-core/xgi_drv.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/linux-core/xgi_drv.c b/linux-core/xgi_drv.c
index 201062ee..33b3a51d 100644
--- a/linux-core/xgi_drv.c
+++ b/linux-core/xgi_drv.c
@@ -138,6 +138,57 @@ MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL and additional rights");
+void xgi_engine_init(struct xgi_info * info)
+{
+ u8 temp;
+
+
+ OUT3C5B(info->mmio_map, 0x11, 0x92);
+
+ /* -------> copy from OT2D
+ * PCI Retry Control Register.
+ * disable PCI read retry & enable write retry in mem. (10xx xxxx)b
+ */
+ temp = IN3X5B(info->mmio_map, 0x55);
+ OUT3X5B(info->mmio_map, 0x55, (temp & 0xbf) | 0x80);
+
+ xgi_enable_ge(info);
+
+ /* Enable linear addressing of the card. */
+ temp = IN3X5B(info->mmio_map, 0x21);
+ OUT3X5B(info->mmio_map, 0x21, temp | 0x20);
+
+ /* Enable 32-bit internal data path */
+ temp = IN3X5B(info->mmio_map, 0x2A);
+ OUT3X5B(info->mmio_map, 0x2A, temp | 0x40);
+
+ /* Enable PCI burst write ,disable burst read and enable MMIO. */
+ /*
+ * 0x3D4.39 Enable PCI burst write, disable burst read and enable MMIO.
+ * 7 ---- Pixel Data Format 1: big endian 0: little endian
+ * 6 5 4 3---- Memory Data with Big Endian Format, BE[3:0]# with Big Endian Format
+ * 2 ---- PCI Burst Write Enable
+ * 1 ---- PCI Burst Read Enable
+ * 0 ---- MMIO Control
+ */
+ temp = IN3X5B(info->mmio_map, 0x39);
+ OUT3X5B(info->mmio_map, 0x39, (temp | 0x05) & 0xfd);
+
+ /* enable GEIO decode */
+ /* temp = IN3X5B(info->mmio_map, 0x29);
+ * OUT3X5B(info->mmio_map, 0x29, temp | 0x08);
+ */
+
+ /* Enable graphic engine I/O PCI retry function*/
+ /* temp = IN3X5B(info->mmio_map, 0x62);
+ * OUT3X5B(info->mmio_map, 0x62, temp | 0x50);
+ */
+
+ /* protect all register except which protected by 3c5.0e.7 */
+ /* OUT3C5B(info->mmio_map, 0x11, 0x87); */
+}
+
+
void xgi_kern_isr_bh(struct drm_device *dev);
int xgi_bootstrap(struct drm_device * dev, void * data,
@@ -159,6 +210,7 @@ int xgi_bootstrap(struct drm_device * dev, void * data,
}
xgi_enable_mmio(info);
+ xgi_engine_init(info);
}