diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/r420.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r420.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c index c05a7270cf0c..053404e71a9d 100644 --- a/drivers/gpu/drm/radeon/r420.c +++ b/drivers/gpu/drm/radeon/r420.c @@ -30,7 +30,15 @@ #include "radeon_reg.h" #include "radeon.h" #include "atom.h" +#include "r100d.h" #include "r420d.h" +#include "r420_reg_safe.h" + +static void r420_set_reg_safe(struct radeon_device *rdev) +{ + rdev->config.r300.reg_safe_bm = r420_reg_safe_bm; + rdev->config.r300.reg_safe_bm_size = ARRAY_SIZE(r420_reg_safe_bm); +} int r420_mc_init(struct radeon_device *rdev) { @@ -165,6 +173,34 @@ static void r420_clock_resume(struct radeon_device *rdev) WREG32_PLL(R_00000D_SCLK_CNTL, sclk_cntl); } +static void r420_cp_errata_init(struct radeon_device *rdev) +{ + /* RV410 and R420 can lock up if CP DMA to host memory happens + * while the 2D engine is busy. + * + * The proper workaround is to queue a RESYNC at the beginning + * of the CP init, apparently. + */ + radeon_scratch_get(rdev, &rdev->config.r300.resync_scratch); + radeon_ring_lock(rdev, 8); + radeon_ring_write(rdev, PACKET0(R300_CP_RESYNC_ADDR, 1)); + radeon_ring_write(rdev, rdev->config.r300.resync_scratch); + radeon_ring_write(rdev, 0xDEADBEEF); + radeon_ring_unlock_commit(rdev); +} + +static void r420_cp_errata_fini(struct radeon_device *rdev) +{ + /* Catch the RESYNC we dispatched all the way back, + * at the very beginning of the CP init. + */ + radeon_ring_lock(rdev, 8); + radeon_ring_write(rdev, PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0)); + radeon_ring_write(rdev, R300_RB3D_DC_FINISH); + radeon_ring_unlock_commit(rdev); + radeon_scratch_free(rdev, rdev->config.r300.resync_scratch); +} + static int r420_startup(struct radeon_device *rdev) { int r; @@ -190,12 +226,14 @@ static int r420_startup(struct radeon_device *rdev) r420_pipes_init(rdev); /* Enable IRQ */ r100_irq_set(rdev); + rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL); /* 1M ring buffer */ r = r100_cp_init(rdev, 1024 * 1024); if (r) { dev_err(rdev->dev, "failled initializing CP (%d).\n", r); return r; } + r420_cp_errata_init(rdev); r = r100_wb_init(rdev); if (r) { dev_err(rdev->dev, "failled initializing WB (%d).\n", r); @@ -238,6 +276,7 @@ int r420_resume(struct radeon_device *rdev) int r420_suspend(struct radeon_device *rdev) { + r420_cp_errata_fini(rdev); r100_cp_disable(rdev); r100_wb_disable(rdev); r100_irq_disable(rdev); @@ -346,7 +385,7 @@ int r420_init(struct radeon_device *rdev) if (r) return r; } - r300_set_reg_safe(rdev); + r420_set_reg_safe(rdev); rdev->accel_working = true; r = r420_startup(rdev); if (r) { |