diff options
Diffstat (limited to 'kernel/drivers/gpu/drm/nouveau/nouveau_agp.c')
| -rw-r--r-- | kernel/drivers/gpu/drm/nouveau/nouveau_agp.c | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/kernel/drivers/gpu/drm/nouveau/nouveau_agp.c b/kernel/drivers/gpu/drm/nouveau/nouveau_agp.c deleted file mode 100644 index 0b5970955..000000000 --- a/kernel/drivers/gpu/drm/nouveau/nouveau_agp.c +++ /dev/null @@ -1,195 +0,0 @@ -#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 -} |