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path: root/drivers/gpu/drm/radeon/r600.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/r600.c')
-rw-r--r--drivers/gpu/drm/radeon/r600.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index bc54b26cb32..aa5571b73aa 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1662,6 +1662,7 @@ void r600_gpu_init(struct radeon_device *rdev)
R6XX_MAX_BACKENDS_MASK) >> 16)),
(cc_rb_backend_disable >> 16));
rdev->config.r600.tile_config = tiling_config;
+ rdev->config.r600.backend_map = backend_map;
tiling_config |= BACKEND_MAP(backend_map);
WREG32(GB_TILING_CONFIG, tiling_config);
WREG32(DCP_TILING_CONFIG, tiling_config & 0xffff);
@@ -2212,9 +2213,6 @@ int r600_cp_resume(struct radeon_device *rdev)
/* set the wb address whether it's enabled or not */
WREG32(CP_RB_RPTR_ADDR,
-#ifdef __BIG_ENDIAN
- RB_RPTR_SWAP(2) |
-#endif
((rdev->wb.gpu_addr + RADEON_WB_CP_RPTR_OFFSET) & 0xFFFFFFFC));
WREG32(CP_RB_RPTR_ADDR_HI, upper_32_bits(rdev->wb.gpu_addr + RADEON_WB_CP_RPTR_OFFSET) & 0xFF);
WREG32(SCRATCH_ADDR, ((rdev->wb.gpu_addr + RADEON_WB_SCRATCH_OFFSET) >> 8) & 0xFFFFFFFF);
@@ -2994,10 +2992,6 @@ int r600_irq_init(struct radeon_device *rdev)
/* RPTR_REARM only works if msi's are enabled */
if (rdev->msi_enabled)
ih_cntl |= RPTR_REARM;
-
-#ifdef __BIG_ENDIAN
- ih_cntl |= IH_MC_SWAP(IH_MC_SWAP_32BIT);
-#endif
WREG32(IH_CNTL, ih_cntl);
/* force the active interrupt state to all disabled */
@@ -3308,6 +3302,10 @@ int r600_irq_process(struct radeon_device *rdev)
if (!rdev->ih.enabled || rdev->shutdown)
return IRQ_NONE;
+ /* No MSIs, need a dummy read to flush PCI DMAs */
+ if (!rdev->msi_enabled)
+ RREG32(IH_RB_WPTR);
+
wptr = r600_get_ih_wptr(rdev);
rptr = rdev->ih.rptr;
DRM_DEBUG("r600_irq_process start: rptr %d, wptr %d\n", rptr, wptr);
@@ -3320,6 +3318,9 @@ int r600_irq_process(struct radeon_device *rdev)
}
restart_ih:
+ /* Order reading of wptr vs. reading of IH ring data */
+ rmb();
+
/* display interrupts */
r600_irq_ack(rdev);