+++ /dev/null
-#include <linux/module.h>
-
-#include "nouveau_drm.h"
-#include "nouveau_agp.h"
-#include "nouveau_reg.h"
-
-#if __OS_HAS_AGP
-MODULE_PARM_DESC(agpmode, "AGP mode (0 to disable AGP)");
-static int nouveau_agpmode = -1;
-module_param_named(agpmode, nouveau_agpmode, int, 0400);
-
-struct nouveau_agpmode_quirk {
- u16 hostbridge_vendor;
- u16 hostbridge_device;
- u16 chip_vendor;
- u16 chip_device;
- int mode;
-};
-
-static struct nouveau_agpmode_quirk nouveau_agpmode_quirk_list[] = {
- /* VIA Apollo PRO133x / GeForce FX 5600 Ultra, max agpmode 2, fdo #20341 */
- { PCI_VENDOR_ID_VIA, 0x0691, PCI_VENDOR_ID_NVIDIA, 0x0311, 2 },
-
- {},
-};
-
-static unsigned long
-get_agp_mode(struct nouveau_drm *drm, const struct drm_agp_info *info)
-{
- struct nvif_device *device = &drm->device;
- struct nouveau_agpmode_quirk *quirk = nouveau_agpmode_quirk_list;
- int agpmode = nouveau_agpmode;
- unsigned long mode = info->mode;
-
- /*
- * FW seems to be broken on nv18, it makes the card lock up
- * randomly.
- */
- if (device->info.chipset == 0x18)
- mode &= ~PCI_AGP_COMMAND_FW;
-
- /*
- * Go through the quirks list and adjust the agpmode accordingly.
- */
- while (agpmode == -1 && quirk->hostbridge_vendor) {
- if (info->id_vendor == quirk->hostbridge_vendor &&
- info->id_device == quirk->hostbridge_device &&
- nvxx_device(device)->pdev->vendor == quirk->chip_vendor &&
- nvxx_device(device)->pdev->device == quirk->chip_device) {
- agpmode = quirk->mode;
- NV_INFO(drm, "Forcing agp mode to %dX. Use agpmode to override.\n",
- agpmode);
- break;
- }
- ++quirk;
- }
-
- /*
- * AGP mode set in the command line.
- */
- if (agpmode > 0) {
- bool agpv3 = mode & 0x8;
- int rate = agpv3 ? agpmode / 4 : agpmode;
-
- mode = (mode & ~0x7) | (rate & 0x7);
- }
-
- return mode;
-}
-
-static bool
-nouveau_agp_enabled(struct nouveau_drm *drm)
-{
- struct drm_device *dev = drm->dev;
-
- if (!dev->pdev || !drm_pci_device_is_agp(dev) || !dev->agp)
- return false;
-
- if (drm->agp.stat == UNKNOWN) {
- if (!nouveau_agpmode)
- return false;
-#ifdef __powerpc__
- /* Disable AGP by default on all PowerPC machines for
- * now -- At least some UniNorth-2 AGP bridges are
- * known to be broken: DMA from the host to the card
- * works just fine, but writeback from the card to the
- * host goes straight to memory untranslated bypassing
- * the GATT somehow, making them quite painful to deal
- * with...
- */
- if (nouveau_agpmode == -1)
- return false;
-#endif
- return true;
- }
-
- return (drm->agp.stat == ENABLED);
-}
-#endif
-
-void
-nouveau_agp_reset(struct nouveau_drm *drm)
-{
-#if __OS_HAS_AGP
- struct nvif_device *device = &drm->device;
- struct drm_device *dev = drm->dev;
- u32 save[2];
- int ret;
-
- if (!nouveau_agp_enabled(drm))
- return;
-
- /* First of all, disable fast writes, otherwise if it's
- * already enabled in the AGP bridge and we disable the card's
- * AGP controller we might be locking ourselves out of it. */
- if ((nvif_rd32(device, NV04_PBUS_PCI_NV_19) |
- dev->agp->mode) & PCI_AGP_COMMAND_FW) {
- struct drm_agp_info info;
- struct drm_agp_mode mode;
-
- ret = drm_agp_info(dev, &info);
- if (ret)
- return;
-
- mode.mode = get_agp_mode(drm, &info);
- mode.mode &= ~PCI_AGP_COMMAND_FW;
-
- ret = drm_agp_enable(dev, mode);
- if (ret)
- return;
- }
-
-
- /* clear busmaster bit, and disable AGP */
- save[0] = nvif_mask(device, NV04_PBUS_PCI_NV_1, 0x00000004, 0x00000000);
- nvif_wr32(device, NV04_PBUS_PCI_NV_19, 0);
-
- /* reset PGRAPH, PFIFO and PTIMER */
- save[1] = nvif_mask(device, 0x000200, 0x00011100, 0x00000000);
- nvif_mask(device, 0x000200, 0x00011100, save[1]);
-
- /* and restore bustmaster bit (gives effect of resetting AGP) */
- nvif_wr32(device, NV04_PBUS_PCI_NV_1, save[0]);
-#endif
-}
-
-void
-nouveau_agp_init(struct nouveau_drm *drm)
-{
-#if __OS_HAS_AGP
- struct drm_device *dev = drm->dev;
- struct drm_agp_info info;
- struct drm_agp_mode mode;
- int ret;
-
- if (!nouveau_agp_enabled(drm))
- return;
- drm->agp.stat = DISABLE;
-
- ret = drm_agp_acquire(dev);
- if (ret) {
- NV_ERROR(drm, "unable to acquire AGP: %d\n", ret);
- return;
- }
-
- ret = drm_agp_info(dev, &info);
- if (ret) {
- NV_ERROR(drm, "unable to get AGP info: %d\n", ret);
- return;
- }
-
- /* see agp.h for the AGPSTAT_* modes available */
- mode.mode = get_agp_mode(drm, &info);
-
- ret = drm_agp_enable(dev, mode);
- if (ret) {
- NV_ERROR(drm, "unable to enable AGP: %d\n", ret);
- return;
- }
-
- drm->agp.stat = ENABLED;
- drm->agp.base = info.aperture_base;
- drm->agp.size = info.aperture_size;
-#endif
-}
-
-void
-nouveau_agp_fini(struct nouveau_drm *drm)
-{
-#if __OS_HAS_AGP
- struct drm_device *dev = drm->dev;
- if (dev->agp && dev->agp->acquired)
- drm_agp_release(dev);
-#endif
-}
Code Review / kvmfornfv.git / blobdiff