Should improve performance slightly and possibly fix some
issues.
Signed-off-by: Alex Deucher <alexdeucher at gmail.com>
---
drivers/gpu/drm/radeon/evergreen.c | 38 +++++++++++++++++++++++++++++
drivers/gpu/drm/radeon/evergreend.h | 4 +++
drivers/gpu/drm/radeon/rv770.c | 45 +++++++++++++++++++++++++++++++++++
drivers/gpu/drm/radeon/rv770d.h | 2 +
4 files changed, 89 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/radeon/evergreen.c
b/drivers/gpu/drm/radeon/evergreen.c
index 4dc5b47..728358e 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1382,6 +1382,42 @@ static u32 evergreen_get_tile_pipe_to_backend_map(struct
radeon_device *rdev,
return backend_map;
}
+static void evergreen_program_channel_remap(struct radeon_device *rdev)
+{
+ u32 tcp_chan_steer_lo, tcp_chan_steer_hi, mc_shared_chremap, tmp;
+
+ tmp = RREG32(MC_SHARED_CHMAP);
+ switch ((tmp & NOOFCHAN_MASK) >> NOOFCHAN_SHIFT) {
+ case 0:
+ case 1:
+ case 2:
+ case 3:
+ default:
+ /* default mapping */
+ mc_shared_chremap = 0x00fac688;
+ break;
+ }
+
+ switch (rdev->family) {
+ case CHIP_HEMLOCK:
+ case CHIP_CYPRESS:
+ tcp_chan_steer_lo = 0x54763210;
+ tcp_chan_steer_hi = 0x0000ba98;
+ break;
+ case CHIP_JUNIPER:
+ case CHIP_REDWOOD:
+ case CHIP_CEDAR:
+ default:
+ tcp_chan_steer_lo = 0x76543210;
+ tcp_chan_steer_hi = 0x0000ba98;
+ break;
+ }
+
+ WREG32(TCP_CHAN_STEER_LO, tcp_chan_steer_lo);
+ WREG32(TCP_CHAN_STEER_HI, tcp_chan_steer_hi);
+ WREG32(MC_SHARED_CHREMAP, mc_shared_chremap);
+}
+
static void evergreen_gpu_init(struct radeon_device *rdev)
{
u32 cc_rb_backend_disable = 0;
@@ -1685,6 +1721,8 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
WREG32(DMIF_ADDR_CONFIG, gb_addr_config);
WREG32(HDP_ADDR_CONFIG, gb_addr_config);
+ evergreen_program_channel_remap(rdev);
+
num_shader_engines = ((RREG32(GB_ADDR_CONFIG) & NUM_SHADER_ENGINES(3))
>> 12) + 1;
grbm_gfx_index = INSTANCE_BROADCAST_WRITES;
diff --git a/drivers/gpu/drm/radeon/evergreend.h
b/drivers/gpu/drm/radeon/evergreend.h
index 113c70c..9644b1c 100644
--- a/drivers/gpu/drm/radeon/evergreend.h
+++ b/drivers/gpu/drm/radeon/evergreend.h
@@ -180,6 +180,7 @@
#define MC_SHARED_CHMAP 0x2004
#define NOOFCHAN_SHIFT 12
#define NOOFCHAN_MASK
0x00003000
+#define MC_SHARED_CHREMAP 0x2008
#define MC_ARB_RAMCFG 0x2760
#define NOOFBANK_SHIFT 0
@@ -348,6 +349,9 @@
#define SYNC_WALKER (1 <<
25)
#define SYNC_ALIGNER (1 <<
26)
+#define TCP_CHAN_STEER_LO 0x960c
+#define TCP_CHAN_STEER_HI 0x9610
+
#define VGT_CACHE_INVALIDATION 0x88C4
#define CACHE_INVALIDATION(x) ((x) <<
0)
#define VC_ONLY 0
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 4dfead8..24ebd08 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -489,6 +489,49 @@ static u32 r700_get_tile_pipe_to_backend_map(struct
radeon_device *rdev,
return backend_map;
}
+static void rv770_program_channel_remap(struct radeon_device *rdev)
+{
+ u32 tcp_chan_steer, mc_shared_chremap, tmp;
+ bool force_no_swizzle;
+
+ switch (rdev->family) {
+ case CHIP_RV770:
+ case CHIP_RV730:
+ force_no_swizzle = false;
+ break;
+ case CHIP_RV710:
+ case CHIP_RV740:
+ default:
+ force_no_swizzle = true;
+ break;
+ }
+
+ tmp = RREG32(MC_SHARED_CHMAP);
+ switch ((tmp & NOOFCHAN_MASK) >> NOOFCHAN_SHIFT) {
+ case 0:
+ case 1:
+ default:
+ /* default mapping */
+ mc_shared_chremap = 0x00fac688;
+ break;
+ case 2:
+ case 3:
+ if (force_no_swizzle)
+ mc_shared_chremap = 0x00fac688;
+ else
+ mc_shared_chremap = 0x00bbc298;
+ break;
+ }
+
+ if (rdev->family == CHIP_RV740)
+ tcp_chan_steer = 0x00ef2a60;
+ else
+ tcp_chan_steer = 0x00fac688;
+
+ WREG32(TCP_CHAN_STEER, tcp_chan_steer);
+ WREG32(MC_SHARED_CHREMAP, mc_shared_chremap);
+}
+
static void rv770_gpu_init(struct radeon_device *rdev)
{
int i, j, num_qd_pipes;
@@ -688,6 +731,8 @@ static void rv770_gpu_init(struct radeon_device *rdev)
WREG32(DCP_TILING_CONFIG, (gb_tiling_config & 0xffff));
WREG32(HDP_TILING_CONFIG, (gb_tiling_config & 0xffff));
+ rv770_program_channel_remap(rdev);
+
WREG32(CC_RB_BACKEND_DISABLE, cc_rb_backend_disable);
WREG32(CC_GC_SHADER_PIPE_CONFIG, cc_gc_shader_pipe_config);
WREG32(GC_USER_SHADER_PIPE_CONFIG, cc_gc_shader_pipe_config);
diff --git a/drivers/gpu/drm/radeon/rv770d.h b/drivers/gpu/drm/radeon/rv770d.h
index b7a5a20..7b1c8f8 100644
--- a/drivers/gpu/drm/radeon/rv770d.h
+++ b/drivers/gpu/drm/radeon/rv770d.h
@@ -138,6 +138,7 @@
#define MC_SHARED_CHMAP 0x2004
#define NOOFCHAN_SHIFT 12
#define NOOFCHAN_MASK
0x00003000
+#define MC_SHARED_CHREMAP 0x2008
#define MC_ARB_RAMCFG 0x2760
#define NOOFBANK_SHIFT 0
@@ -303,6 +304,7 @@
#define BILINEAR_PRECISION_8_BIT (1 <<
31)
#define TCP_CNTL 0x9610
+#define TCP_CHAN_STEER 0x9614
#define VGT_CACHE_INVALIDATION 0x88C4
#define CACHE_INVALIDATION(x) ((x)<<0)
--
1.7.1.1
