diff options
Diffstat (limited to 'drivers/char/drm/radeon_cp.c')
| -rw-r--r-- | drivers/char/drm/radeon_cp.c | 77 |
1 files changed, 70 insertions, 7 deletions
diff --git a/drivers/char/drm/radeon_cp.c b/drivers/char/drm/radeon_cp.c index 6d9080a3ca7e97..6dff5e43f7136d 100644 --- a/drivers/char/drm/radeon_cp.c +++ b/drivers/char/drm/radeon_cp.c @@ -825,6 +825,12 @@ static int RADEON_READ_PLL(drm_device_t *dev, int addr) return RADEON_READ(RADEON_CLOCK_CNTL_DATA); } +static int RADEON_READ_PCIE(drm_radeon_private_t *dev_priv, int addr) +{ + RADEON_WRITE8(RADEON_PCIE_INDEX, addr & 0xff); + return RADEON_READ(RADEON_PCIE_DATA); +} + #if RADEON_FIFO_DEBUG static void radeon_status( drm_radeon_private_t *dev_priv ) { @@ -1241,17 +1247,46 @@ static void radeon_cp_init_ring_buffer( drm_device_t *dev, RADEON_ISYNC_CPSCRATCH_IDLEGUI) ); } +/* Enable or disable PCI-E GART on the chip */ +static void radeon_set_pciegart(drm_radeon_private_t * dev_priv, int on) +{ + u32 tmp = RADEON_READ_PCIE(dev_priv, RADEON_PCIE_TX_GART_CNTL); + if (on) { + + DRM_DEBUG("programming pcie %08X %08lX %08X\n", + dev_priv->gart_vm_start, (long)dev_priv->gart_info.bus_addr, + dev_priv->gart_size); + RADEON_WRITE_PCIE(RADEON_PCIE_TX_DISCARD_RD_ADDR_LO, dev_priv->gart_vm_start); + RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_BASE, dev_priv->gart_info.bus_addr); + RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_START_LO, dev_priv->gart_vm_start); + RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_END_LO, dev_priv->gart_vm_start + + dev_priv->gart_size - 1); + + RADEON_WRITE(RADEON_MC_AGP_LOCATION, 0xffffffc0); /* ?? */ + + RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_CNTL, RADEON_PCIE_TX_GART_EN); + } else { + RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_CNTL, tmp & ~RADEON_PCIE_TX_GART_EN); + } +} + /* Enable or disable PCI GART on the chip */ static void radeon_set_pcigart( drm_radeon_private_t *dev_priv, int on ) { u32 tmp = RADEON_READ( RADEON_AIC_CNTL ); + if (dev_priv->flags & CHIP_IS_PCIE) + { + radeon_set_pciegart(dev_priv, on); + return; + } + if ( on ) { RADEON_WRITE( RADEON_AIC_CNTL, tmp | RADEON_PCIGART_TRANSLATE_EN ); /* set PCI GART page-table base address */ - RADEON_WRITE( RADEON_AIC_PT_BASE, dev_priv->bus_pci_gart ); + RADEON_WRITE(RADEON_AIC_PT_BASE, dev_priv->gart_info.bus_addr); /* set address range for PCI address translate */ @@ -1519,8 +1554,28 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init ) } else #endif { - if (!drm_ati_pcigart_init( dev, &dev_priv->phys_pci_gart, - &dev_priv->bus_pci_gart)) { + /* if we have an offset set from userspace */ + if (dev_priv->pcigart_offset) { + dev_priv->gart_info.bus_addr = dev_priv->pcigart_offset + dev_priv->fb_location; + dev_priv->gart_info.addr = (unsigned long)drm_ioremap(dev_priv->gart_info.bus_addr, RADEON_PCIGART_TABLE_SIZE, dev); + + dev_priv->gart_info.is_pcie = !!(dev_priv->flags & CHIP_IS_PCIE); + dev_priv->gart_info.gart_table_location = DRM_ATI_GART_FB; + + DRM_DEBUG("Setting phys_pci_gart to %08lX %08lX\n", dev_priv->gart_info.addr, dev_priv->pcigart_offset); + } + else { + dev_priv->gart_info.gart_table_location = DRM_ATI_GART_MAIN; + dev_priv->gart_info.addr = dev_priv->gart_info.bus_addr= 0; + if (dev_priv->flags & CHIP_IS_PCIE) + { + DRM_ERROR("Cannot use PCI Express without GART in FB memory\n"); + radeon_do_cleanup_cp(dev); + return DRM_ERR(EINVAL); + } + } + + if (!drm_ati_pcigart_init(dev, &dev_priv->gart_info)) { DRM_ERROR( "failed to init PCI GART!\n" ); dev->dev_private = (void *)dev_priv; radeon_do_cleanup_cp(dev); @@ -1568,10 +1623,15 @@ static int radeon_do_cleanup_cp( drm_device_t *dev ) } else #endif { - if (!drm_ati_pcigart_cleanup( dev, - dev_priv->phys_pci_gart, - dev_priv->bus_pci_gart )) - DRM_ERROR( "failed to cleanup PCI GART!\n" ); + if (dev_priv->gart_info.bus_addr) + if (!drm_ati_pcigart_cleanup(dev, &dev_priv->gart_info)) + DRM_ERROR("failed to cleanup PCI GART!\n"); + + if (dev_priv->gart_info.gart_table_location == DRM_ATI_GART_FB) + { + drm_ioremapfree((void *)dev_priv->gart_info.addr, RADEON_PCIGART_TABLE_SIZE, dev); + dev_priv->gart_info.addr = 0; + } } /* only clear to the start of flags */ @@ -2057,6 +2117,9 @@ int radeon_driver_preinit(struct drm_device *dev, unsigned long flags) if (drm_device_is_agp(dev)) dev_priv->flags |= CHIP_IS_AGP; + if (drm_device_is_pcie(dev)) + dev_priv->flags |= CHIP_IS_PCIE; + DRM_DEBUG("%s card detected\n", ((dev_priv->flags & CHIP_IS_AGP) ? "AGP" : "PCI")); return ret; |