shared-core/nv04_mc.c

   1 #include "drmP.h"
   2 #include "drm.h"
   3 #include "nouveau_drv.h"
   4 #include "nouveau_drm.h"
   5
   6 int
   7 nv04_mc_init(struct drm_device *dev)
   8 {
   9         struct drm_nouveau_private *dev_priv = dev->dev_private;
  10         uint32_t saved_pci_nv_1, saved_pci_nv_19;
  11
  12         saved_pci_nv_1 = NV_READ(NV04_PBUS_PCI_NV_1);
  13         saved_pci_nv_19 = NV_READ(NV04_PBUS_PCI_NV_19);
  14
  15         /* clear busmaster bit */
  16         NV_WRITE(NV04_PBUS_PCI_NV_1, saved_pci_nv_1 & ~(0x00000001 << 2));
  17         /* clear SBA and AGP bits */
  18         NV_WRITE(NV04_PBUS_PCI_NV_19, saved_pci_nv_19 & 0xfffff0ff);
  19
  20         /* Power up everything, resetting each individual unit will
  21          * be done later if needed.
  22          */
  23         NV_WRITE(NV03_PMC_ENABLE, 0xFFFFFFFF);
  24
  25         /* and restore (gives effect of resetting AGP) */
  26         NV_WRITE(NV04_PBUS_PCI_NV_19, saved_pci_nv_19);
  27         NV_WRITE(NV04_PBUS_PCI_NV_1, saved_pci_nv_1);
  28
  29         return 0;
  30 }
  31
  32 void
  33 nv04_mc_takedown(struct drm_device *dev)
  34 {
  35 }