diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon.h')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index ff8b564ce2b..6d6d099d9cb 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -2110,6 +2110,8 @@ struct radeon_device { resource_size_t rmmio_size; /* protects concurrent MM_INDEX/DATA based register access */ spinlock_t mmio_idx_lock; + /* protects concurrent SMC based register access */ + spinlock_t smc_idx_lock; void __iomem *rmmio; radeon_rreg_t mc_rreg; radeon_wreg_t mc_wreg; @@ -2292,17 +2294,24 @@ static inline void rv370_pcie_wreg(struct radeon_device *rdev, uint32_t reg, uin static inline u32 tn_smc_rreg(struct radeon_device *rdev, u32 reg) { + unsigned long flags; u32 r; + spin_lock_irqsave(&rdev->smc_idx_lock, flags); WREG32(TN_SMC_IND_INDEX_0, (reg)); r = RREG32(TN_SMC_IND_DATA_0); + spin_unlock_irqrestore(&rdev->smc_idx_lock, flags); return r; } static inline void tn_smc_wreg(struct radeon_device *rdev, u32 reg, u32 v) { + unsigned long flags; + + spin_lock_irqsave(&rdev->smc_idx_lock, flags); WREG32(TN_SMC_IND_INDEX_0, (reg)); WREG32(TN_SMC_IND_DATA_0, (v)); + spin_unlock_irqrestore(&rdev->smc_idx_lock, flags); } static inline u32 r600_rcu_rreg(struct radeon_device *rdev, u32 reg) |