diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/evergreen.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 4dc5b4714c5a..728358e6b798 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; |