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71adbfc874
This is necessary for AGP to work after running bios init scripts on nv3x, and is seen in mmio traces of all cards (nv04-nv4x) I'm not making the equivalent change to nv40_mc.c, as early cards (6200, 6800gt) use the 0x000018XX PBUS and later cards use the 0x000880XX PBUS and I don't know the effects of using the wrong one
35 lines
868 B
C
35 lines
868 B
C
#include "drmP.h"
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#include "drm.h"
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#include "nouveau_drv.h"
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#include "nouveau_drm.h"
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int
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nv04_mc_init(struct drm_device *dev)
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{
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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uint32_t saved_pci_nv_1, saved_pci_nv_19;
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saved_pci_nv_1 = NV_READ(NV04_PBUS_PCI_NV_1);
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saved_pci_nv_19 = NV_READ(NV04_PBUS_PCI_NV_19);
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/* clear busmaster bit */
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NV_WRITE(NV04_PBUS_PCI_NV_1, saved_pci_nv_1 & ~(0x00000001 << 2));
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/* clear SBA, AGP and FW bits */
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NV_WRITE(NV04_PBUS_PCI_NV_19, saved_pci_nv_19 & 0xfffff00f);
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/* Power up everything, resetting each individual unit will
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* be done later if needed.
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*/
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NV_WRITE(NV03_PMC_ENABLE, 0xFFFFFFFF);
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/* and restore (gives effect of resetting AGP) */
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NV_WRITE(NV04_PBUS_PCI_NV_19, saved_pci_nv_19);
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NV_WRITE(NV04_PBUS_PCI_NV_1, saved_pci_nv_1);
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return 0;
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}
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void
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nv04_mc_takedown(struct drm_device *dev)
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{
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}
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