drm/gma500/gtt.c

128 static int psb_gtt_enable(struct drm_psb_private *dev_priv)
130 	struct drm_device *dev = &dev_priv->dev;
134 	ret = pci_read_config_word(pdev, PSB_GMCH_CTRL, &dev_priv->gmch_ctrl);
137 	ret = pci_write_config_word(pdev, PSB_GMCH_CTRL, dev_priv->gmch_ctrl | _PSB_GMCH_ENABLED);
141 	dev_priv->pge_ctl = PSB_RVDC32(PSB_PGETBL_CTL);
142 	PSB_WVDC32(dev_priv->pge_ctl | _PSB_PGETBL_ENABLED, PSB_PGETBL_CTL);
149 static void psb_gtt_disable(struct drm_psb_private *dev_priv)
151 	struct drm_device *dev = &dev_priv->dev;
154 	pci_write_config_word(pdev, PSB_GMCH_CTRL, dev_priv->gmch_ctrl);
155 	PSB_WVDC32(dev_priv->pge_ctl, PSB_PGETBL_CTL);
162 	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
164 	iounmap(dev_priv->gtt_map);
165 	psb_gtt_disable(dev_priv);
166 	mutex_destroy(&dev_priv->gtt_mutex);
185 static void psb_gtt_init_ranges(struct drm_psb_private *dev_priv)
187 	struct drm_device *dev = &dev_priv->dev;
189 	struct psb_gtt *pg = &dev_priv->gtt;
195 	gtt_phys_start = dev_priv->pge_ctl & PAGE_MASK;
212 		gtt_start = dev_priv->pge_ctl;
252 	dev_priv->gtt_mem = gtt_mem;
257 	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
258 	struct psb_gtt *pg = &dev_priv->gtt;
261 	mutex_init(&dev_priv->gtt_mutex);
263 	ret = psb_gtt_enable(dev_priv);
267 	psb_gtt_init_ranges(dev_priv);
269 	dev_priv->gtt_map = ioremap(pg->gtt_phys_start, pg->gtt_pages << PAGE_SHIFT);
270 	if (!dev_priv->gtt_map) {
276 	psb_gtt_clear(dev_priv);
281 	psb_gtt_disable(dev_priv);
283 	mutex_destroy(&dev_priv->gtt_mutex);
289 	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
290 	struct psb_gtt *pg = &dev_priv->gtt;
295 	ret = psb_gtt_enable(dev_priv);
299 	psb_gtt_init_ranges(dev_priv);
307 	psb_gtt_clear(dev_priv);
310 	psb_gtt_disable(dev_priv);