More churn moving files around.

[netwatch.git] / hardware / video / tnt2.c

diff --git a/hardware/video/tnt2.c b/hardware/video/tnt2.c
new file mode 100644 (file)
index 0000000..6da661e
--- /dev/null
+++ b/hardware/video/tnt2.c
@@ -0,0 +1,89 @@
+/* tnt2.c
+ * NVidia TNT2 driver.
+ * NetWatch system management mode administration console
+ *
+ * Copyright (c) 2008 Jacob Potter and Joshua Wise.  All rights reserved.
+ * This program is free software; you can redistribute and/or modify it under
+ * the terms found in the file LICENSE in the root of this source tree.
+ *
+ */
+
+#include <minilib.h>
+#include <io.h>
+#include <pci.h>
+#include <output.h>
+#include <fb.h>
+#include <paging.h>
+#include <text.h>
+
+#include "generic.h"
+
+static void tnt2_getvmode(void *priv);
+
+static struct fbdevice tnt2_fb = {
+       .getvmode = &tnt2_getvmode,
+};
+
+static unsigned int vgard(unsigned char a)
+{
+       outb(0x3D4, a);
+       return (unsigned int)inb(0x3D5);
+}
+
+static void tnt2_getvmode(void *priv)
+{
+       tnt2_fb.curmode.xres = (vgard(0x1) + 1) * 8;
+       tnt2_fb.curmode.yres = (vgard(0x12) | (vgard(0x7) & 2) << 7 | (vgard(0x7) & 0x40) << 3) + 1;
+       switch (vgard(0x28))
+       {
+       case 3:
+               tnt2_fb.curmode.format = FB_RGB888;
+               tnt2_fb.curmode.bytestride = 4;
+               tnt2_fb.curmode.text = 0;
+               tnt2_fb.checksum_rect = checksum_rect_generic32;
+               tnt2_fb.copy_pixels = copy_pixels_generic32;
+               break;
+       case 0:
+               tnt2_fb.curmode.text = 1;
+               tnt2_fb.checksum_rect = text_checksum;
+               tnt2_fb.copy_pixels = text_render;
+               break;
+       default:
+               tnt2_fb.curmode.text = 1;
+               tnt2_fb.checksum_rect = text_checksum;
+               tnt2_fb.copy_pixels = text_render;
+               outputf("Unknown TNT2 format %x", vgard(0x28));
+               break;
+       }
+}
+
+static int tnt2_probe(struct pci_dev *pci, void *data)
+{
+       unsigned int p;
+
+       if (pci->bars[1].type != PCI_BAR_MEMORY32)
+       {
+               output("TNT2 BAR1 is not memory32?");
+               return 0;
+       }
+       
+       /* Map 32M of memory. */
+       for (p = 0; p < 32; p += 4)
+               addmap_4m(0x40000000 + p*1024*1024, pci->bars[1].addr + p*1024*1024);
+       tnt2_fb.fbaddr = (void *)0x40000000;
+       
+       fb = &tnt2_fb;
+       outputf("Found TNT2 with FB at %08x, mapped to %08x", pci->bars[1].addr, tnt2_fb.fbaddr);
+       return 1;
+}
+
+static struct pci_id tnt2_pci[] = {
+       {0x10DE, 0x0028, "TNT2", "RIVA TNT2"}
+};
+
+struct pci_driver tnt2_driver = {
+       .name     = "tnt2",
+       .probe    = tnt2_probe,
+       .ids      = tnt2_pci,
+       .id_count = sizeof(tnt2_pci)/sizeof(tnt2_pci[0]),
+};