diff options
| -rw-r--r-- | linux-core/via_dmablit.c | 2 | ||||
| -rw-r--r-- | shared-core/via_dma.c | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/linux-core/via_dmablit.c b/linux-core/via_dmablit.c index cbb73711..1fb902cb 100644 --- a/linux-core/via_dmablit.c +++ b/linux-core/via_dmablit.c @@ -217,7 +217,9 @@ via_fire_dmablit(drm_device_t *dev, drm_via_sg_info_t *vsg, int engine) VIA_WRITE(VIA_PCI_DMA_MR0 + engine*0x04, VIA_DMA_MR_CM | VIA_DMA_MR_TDIE); VIA_WRITE(VIA_PCI_DMA_BCR0 + engine*0x10, 0); VIA_WRITE(VIA_PCI_DMA_DPR0 + engine*0x10, vsg->chain_start); + DRM_WRITEMEMORYBARRIER(); VIA_WRITE(VIA_PCI_DMA_CSR0 + engine*0x04, VIA_DMA_CSR_DE | VIA_DMA_CSR_TS); + VIA_READ(VIA_PCI_DMA_CSR0 + engine*0x04); } /* diff --git a/shared-core/via_dma.c b/shared-core/via_dma.c index c6e7aa77..90dbb6a2 100644 --- a/shared-core/via_dma.c +++ b/shared-core/via_dma.c @@ -489,6 +489,7 @@ static int via_hook_segment(drm_via_private_t *dev_priv, VIA_WRITE(VIA_REG_TRANSET, (HC_ParaType_PreCR << 16)); VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi); VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo); + VIA_READ(VIA_REG_TRANSPACE); } } return paused; @@ -572,8 +573,9 @@ static void via_cmdbuf_start(drm_via_private_t * dev_priv) VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi); VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo); - + DRM_WRITEMEMORYBARRIER(); VIA_WRITE(VIA_REG_TRANSPACE, command | HC_HAGPCMNT_MASK); + VIA_READ(VIA_REG_TRANSPACE); } static void via_pad_cache(drm_via_private_t *dev_priv, int qwords) |