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drm/radeon/kms: setup mc chremap properly on r7xx/evergreen

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Should improve performance slightly and possibly fix some
issues.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-11-22 17:56:18 -05:00 committed by Dave Airlie
parent 27641c3f00
commit 9535ab7323
4 changed files with 89 additions and 0 deletions
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38
drivers/gpu/drm/radeon/evergreen.c
View File

@ -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;

4
drivers/gpu/drm/radeon/evergreend.h
View File

@ -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

45
drivers/gpu/drm/radeon/rv770.c
View File

@ -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);

2
drivers/gpu/drm/radeon/rv770d.h
View File

@ -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)