diff options
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 26 |
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index eba4abc8aac6..98b05be03f0e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1632,6 +1632,9 @@ uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, uint32_t acc_flags); void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, uint32_t acc_flags); +void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset, uint8_t value); +uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset); + u32 amdgpu_io_rreg(struct amdgpu_device *adev, u32 reg); void amdgpu_io_wreg(struct amdgpu_device *adev, u32 reg, u32 v); @@ -1655,6 +1658,9 @@ int emu_soc_asic_init(struct amdgpu_device *adev); #define RREG32_NO_KIQ(reg) amdgpu_mm_rreg(adev, (reg), AMDGPU_REGS_NO_KIQ) #define WREG32_NO_KIQ(reg, v) amdgpu_mm_wreg(adev, (reg), (v), AMDGPU_REGS_NO_KIQ) +#define RREG8(reg) amdgpu_mm_rreg8(adev, (reg)) +#define WREG8(reg, v) amdgpu_mm_wreg8(adev, (reg), (v)) + #define RREG32(reg) amdgpu_mm_rreg(adev, (reg), 0) #define RREG32_IDX(reg) amdgpu_mm_rreg(adev, (reg), AMDGPU_REGS_IDX) #define DREG32(reg) printk(KERN_INFO "REGISTER: " #reg " : 0x%08X\n", amdgpu_mm_rreg(adev, (reg), 0)) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index cc582e2271e1..e32ff159ba89 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -121,6 +121,32 @@ uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, return ret; } +/* + * MMIO register read with bytes helper functions + * @offset:bytes offset from MMIO start + * +*/ + +uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset) { + if (offset < adev->rmmio_size) + return (readb(adev->rmmio + offset)); + BUG(); +} + +/* + * MMIO register write with bytes helper functions + * @offset:bytes offset from MMIO start + * @value: the value want to be written to the register + * +*/ +void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset, uint8_t value) { + if (offset < adev->rmmio_size) + writeb(value, adev->rmmio + offset); + else + BUG(); +} + + void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, uint32_t acc_flags) { |