From f3982ac141379d7fca32fe94c20527cd347678b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Tue, 27 May 2014 16:47:38 +0200
Subject: [PATCH] drm/radeon: optimize SI VM handling
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Fill VM page tables from the GART page table if applicable.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/radeon/si_dma.c | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/si_dma.c b/drivers/gpu/drm/radeon/si_dma.c
index cf0fdad8c278..952166930fb8 100644
--- a/drivers/gpu/drm/radeon/si_dma.c
+++ b/drivers/gpu/drm/radeon/si_dma.c
@@ -79,7 +79,25 @@ void si_dma_vm_set_page(struct radeon_device *rdev,
trace_radeon_vm_set_page(pe, addr, count, incr, flags);
- if (flags & R600_PTE_SYSTEM) {
+ if (flags == R600_PTE_GART) {
+ uint64_t src = rdev->gart.table_addr + (addr >> 12) * 8;
+ while (count) {
+ unsigned bytes = count * 8;
+ if (bytes > 0xFFFF8)
+ bytes = 0xFFFF8;
+
+ ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY,
+ 1, 0, 0, bytes);
+ ib->ptr[ib->length_dw++] = pe & 0xffffffff;
+ ib->ptr[ib->length_dw++] = src & 0xffffffff;
+ ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
+ ib->ptr[ib->length_dw++] = upper_32_bits(src) & 0xff;
+
+ pe += bytes;
+ src += bytes;
+ count -= bytes / 8;
+ }
+ } else if (flags & R600_PTE_SYSTEM) {
while (count) {
ndw = count * 2;
if (ndw > 0xFFFFE)