I will pop my rv410 back in and test when I get back home. Posting from a mobile, pardon my terseness. ~ C.
On Jan 6, 2010 2:41 AM, "Jerome Glisse" <[email protected]> wrote: From: Corbin Simpson <[email protected]> Long story short, this fixes sporadic hardlocks with my rv410 during times of intense 2D acceleration (Flash on Fx3). V2: Fix indentation and move errata_fini to suspend function so we don't leak scratch register over suspend/resume cycle. Signed-off-by: Corbin Simpson <[email protected]> Signed-off-by: Jerome Glisse <[email protected]> --- drivers/gpu/drm/radeon/r420.c | 31 +++++++++++++++++++++++++++++++ drivers/gpu/drm/radeon/radeon.h | 1 + 2 files changed, 32 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c index c05a727..48ab18f 100644 --- a/drivers/gpu/drm/radeon/r420.c +++ b/drivers/gpu/drm/radeon/r420.c @@ -30,6 +30,7 @@ #include "radeon_reg.h" #include "radeon.h" #include "atom.h" +#include "r100d.h" #include "r420d.h" int r420_mc_init(struct radeon_device *rdev) @@ -165,6 +166,34 @@ 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->resync_scratch); + radeon_ring_lock(rdev, 8); + radeon_ring_write(rdev, PACKET0(R300_CP_RESYNC_ADDR, 1)); + radeon_ring_write(rdev, rdev->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->resync_scratch); +} + static int r420_startup(struct radeon_device *rdev) { int r; @@ -196,6 +225,7 @@ static int r420_startup(struct radeon_device *rdev) 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 +268,7 @@ 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); diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index cd650fd..b272065 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -798,6 +798,7 @@ struct radeon_device { struct radeon_gem gem; struct radeon_pm pm; uint32_t bios_scratch[RADEON_BIOS_NUM_SCRATCH]; + uint32_t resync_scratch; struct mutex cs_mutex; struct radeon_wb wb; struct radeon_dummy_page dummy_page; -- 1.6.5.2
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