Commit 4922f1bc authored by John Clements's avatar John Clements Committed by Alex Deucher

drm/amdgpu: expand sienna chichlid reg access support

Added dedicated 64bit reg read/write support
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarJohn Clements <john.clements@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 922e7455
......@@ -97,6 +97,49 @@ static void nv_pcie_wreg(struct amdgpu_device *adev, u32 reg, u32 v)
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
}
static u64 nv_pcie_rreg64(struct amdgpu_device *adev, u32 reg)
{
unsigned long flags, address, data;
u64 r;
address = adev->nbio.funcs->get_pcie_index_offset(adev);
data = adev->nbio.funcs->get_pcie_data_offset(adev);
spin_lock_irqsave(&adev->pcie_idx_lock, flags);
/* read low 32 bit */
WREG32(address, reg);
(void)RREG32(address);
r = RREG32(data);
/* read high 32 bit*/
WREG32(address, reg + 4);
(void)RREG32(address);
r |= ((u64)RREG32(data) << 32);
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
return r;
}
static void nv_pcie_wreg64(struct amdgpu_device *adev, u32 reg, u64 v)
{
unsigned long flags, address, data;
address = adev->nbio.funcs->get_pcie_index_offset(adev);
data = adev->nbio.funcs->get_pcie_data_offset(adev);
spin_lock_irqsave(&adev->pcie_idx_lock, flags);
/* write low 32 bit */
WREG32(address, reg);
(void)RREG32(address);
WREG32(data, (u32)(v & 0xffffffffULL));
(void)RREG32(data);
/* write high 32 bit */
WREG32(address, reg + 4);
(void)RREG32(address);
WREG32(data, (u32)(v >> 32));
(void)RREG32(data);
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
}
static u32 nv_didt_rreg(struct amdgpu_device *adev, u32 reg)
{
unsigned long flags, address, data;
......@@ -673,6 +716,8 @@ static int nv_common_early_init(void *handle)
adev->smc_wreg = NULL;
adev->pcie_rreg = &nv_pcie_rreg;
adev->pcie_wreg = &nv_pcie_wreg;
adev->pcie_rreg64 = &nv_pcie_rreg64;
adev->pcie_wreg64 = &nv_pcie_wreg64;
/* TODO: will add them during VCN v2 implementation */
adev->uvd_ctx_rreg = NULL;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment