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Message-ID: <53d5ab87-da68-5314-698c-902dd5394f4c@fredlawl.com>
Date: Mon, 18 Nov 2019 19:04:30 -0600
From: Frederick Lawler <fred@...dlawl.com>
To: Alex Deucher <alexdeucher@...il.com>
Cc: "Deucher, Alexander" <alexander.deucher@....com>,
Christian Koenig <christian.koenig@....com>,
Chunming Zhou <David1.Zhou@....com>,
Dave Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Linux PCI <linux-pci@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>,
Maling list - DRI developers
<dri-devel@...ts.freedesktop.org>,
amd-gfx list <amd-gfx@...ts.freedesktop.org>
Subject: Re: [PATCH v2 1/1] drm: Prefer pcie_capability_read_word()
Hi,
Alex Deucher wrote on 11/18/19 11:42 AM:
> On Mon, Nov 18, 2019 at 3:37 AM Frederick Lawler <fred@...dlawl.com> wrote:
>>
>> Commit 8c0d3a02c130 ("PCI: Add accessors for PCI Express Capability")
>> added accessors for the PCI Express Capability so that drivers didn't
>> need to be aware of differences between v1 and v2 of the PCI
>> Express Capability.
>>
>> Replace pci_read_config_word() and pci_write_config_word() calls with
>> pcie_capability_read_word() and pcie_capability_write_word().
>>
>> Signed-off-by: Frederick Lawler <fred@...dlawl.com>
>>
>> ---
>> V2
>> - Squash both drm commits into one
>> - Rebase ontop of d46eac1e658b
>> ---
>> drivers/gpu/drm/amd/amdgpu/cik.c | 63 ++++++++++++++++-----------
>> drivers/gpu/drm/amd/amdgpu/si.c | 71 +++++++++++++++++++------------
>> drivers/gpu/drm/radeon/cik.c | 70 ++++++++++++++++++------------
>> drivers/gpu/drm/radeon/si.c | 73 ++++++++++++++++++++------------
>
> Can you split this into two patches? One for amdgpu and one for radeon?
>
> Thanks!
Sure thing! I also realize I didn't say where the magical commit ref
came from. It came from Bjorns pci/misc tree. I'll get that out to you
Wednesday.
>
> Alex
>
>> 4 files changed, 174 insertions(+), 103 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c
>> index 3067bb874032..f369e3408ed2 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/cik.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/cik.c
>> @@ -1384,7 +1384,6 @@ static int cik_set_vce_clocks(struct amdgpu_device *adev, u32 evclk, u32 ecclk)
>> static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
>> {
>> struct pci_dev *root = adev->pdev->bus->self;
>> - int bridge_pos, gpu_pos;
>> u32 speed_cntl, current_data_rate;
>> int i;
>> u16 tmp16;
>> @@ -1419,12 +1418,7 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
>> DRM_INFO("enabling PCIE gen 2 link speeds, disable with amdgpu.pcie_gen2=0\n");
>> }
>>
>> - bridge_pos = pci_pcie_cap(root);
>> - if (!bridge_pos)
>> - return;
>> -
>> - gpu_pos = pci_pcie_cap(adev->pdev);
>> - if (!gpu_pos)
>> + if (!pci_is_pcie(root) || !pci_is_pcie(adev->pdev))
>> return;
>>
>> if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) {
>> @@ -1434,14 +1428,17 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
>> u16 bridge_cfg2, gpu_cfg2;
>> u32 max_lw, current_lw, tmp;
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg);
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &bridge_cfg);
>> + pcie_capability_read_word(adev->pdev, PCI_EXP_LNKCTL,
>> + &gpu_cfg);
>>
>> tmp16 = bridge_cfg | PCI_EXP_LNKCTL_HAWD;
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(root, PCI_EXP_LNKCTL, tmp16);
>>
>> tmp16 = gpu_cfg | PCI_EXP_LNKCTL_HAWD;
>> - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(adev->pdev, PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> tmp = RREG32_PCIE(ixPCIE_LC_STATUS1);
>> max_lw = (tmp & PCIE_LC_STATUS1__LC_DETECTED_LINK_WIDTH_MASK) >>
>> @@ -1465,15 +1462,23 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
>>
>> for (i = 0; i < 10; i++) {
>> /* check status */
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_DEVSTA, &tmp16);
>> + pcie_capability_read_word(adev->pdev,
>> + PCI_EXP_DEVSTA,
>> + &tmp16);
>> if (tmp16 & PCI_EXP_DEVSTA_TRPND)
>> break;
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg);
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &bridge_cfg);
>> + pcie_capability_read_word(adev->pdev,
>> + PCI_EXP_LNKCTL,
>> + &gpu_cfg);
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &bridge_cfg2);
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &gpu_cfg2);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL2,
>> + &bridge_cfg2);
>> + pcie_capability_read_word(adev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + &gpu_cfg2);
>>
>> tmp = RREG32_PCIE(ixPCIE_LC_CNTL4);
>> tmp |= PCIE_LC_CNTL4__LC_SET_QUIESCE_MASK;
>> @@ -1486,18 +1491,25 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
>> msleep(100);
>>
>> /* linkctl */
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &tmp16);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL_HAWD;
>> tmp16 |= (bridge_cfg & PCI_EXP_LNKCTL_HAWD);
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(root, PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &tmp16);
>> + pcie_capability_read_word(adev->pdev,
>> + PCI_EXP_LNKCTL,
>> + &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL_HAWD;
>> tmp16 |= (gpu_cfg & PCI_EXP_LNKCTL_HAWD);
>> - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(adev->pdev,
>> + PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> /* linkctl2 */
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL2,
>> + &tmp16);
>> tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN);
>> tmp16 |= (bridge_cfg2 &
>> @@ -1511,7 +1523,9 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
>> tmp16 |= (gpu_cfg2 &
>> (PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN));
>> - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(adev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + tmp16);
>>
>> tmp = RREG32_PCIE(ixPCIE_LC_CNTL4);
>> tmp &= ~PCIE_LC_CNTL4__LC_SET_QUIESCE_MASK;
>> @@ -1526,15 +1540,16 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
>> speed_cntl &= ~PCIE_LC_SPEED_CNTL__LC_FORCE_DIS_SW_SPEED_CHANGE_MASK;
>> WREG32_PCIE(ixPCIE_LC_SPEED_CNTL, speed_cntl);
>>
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(adev->pdev, PCI_EXP_LNKCTL2, &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL2_TLS;
>> +
>> if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3)
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */
>> else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2)
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */
>> else
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */
>> - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(adev->pdev, PCI_EXP_LNKCTL2, tmp16);
>>
>> speed_cntl = RREG32_PCIE(ixPCIE_LC_SPEED_CNTL);
>> speed_cntl |= PCIE_LC_SPEED_CNTL__LC_INITIATE_LINK_SPEED_CHANGE_MASK;
>> diff --git a/drivers/gpu/drm/amd/amdgpu/si.c b/drivers/gpu/drm/amd/amdgpu/si.c
>> index a7dcb0d0f039..9f82be879224 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/si.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/si.c
>> @@ -1633,7 +1633,6 @@ static void si_init_golden_registers(struct amdgpu_device *adev)
>> static void si_pcie_gen3_enable(struct amdgpu_device *adev)
>> {
>> struct pci_dev *root = adev->pdev->bus->self;
>> - int bridge_pos, gpu_pos;
>> u32 speed_cntl, current_data_rate;
>> int i;
>> u16 tmp16;
>> @@ -1668,12 +1667,7 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
>> DRM_INFO("enabling PCIE gen 2 link speeds, disable with amdgpu.pcie_gen2=0\n");
>> }
>>
>> - bridge_pos = pci_pcie_cap(root);
>> - if (!bridge_pos)
>> - return;
>> -
>> - gpu_pos = pci_pcie_cap(adev->pdev);
>> - if (!gpu_pos)
>> + if (!pci_is_pcie(root) || !pci_is_pcie(adev->pdev))
>> return;
>>
>> if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) {
>> @@ -1682,14 +1676,17 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
>> u16 bridge_cfg2, gpu_cfg2;
>> u32 max_lw, current_lw, tmp;
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg);
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &bridge_cfg);
>> + pcie_capability_read_word(adev->pdev, PCI_EXP_LNKCTL,
>> + &gpu_cfg);
>>
>> tmp16 = bridge_cfg | PCI_EXP_LNKCTL_HAWD;
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(root, PCI_EXP_LNKCTL, tmp16);
>>
>> tmp16 = gpu_cfg | PCI_EXP_LNKCTL_HAWD;
>> - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(adev->pdev, PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> tmp = RREG32_PCIE(PCIE_LC_STATUS1);
>> max_lw = (tmp & LC_DETECTED_LINK_WIDTH_MASK) >> LC_DETECTED_LINK_WIDTH_SHIFT;
>> @@ -1706,15 +1703,23 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
>> }
>>
>> for (i = 0; i < 10; i++) {
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_DEVSTA, &tmp16);
>> + pcie_capability_read_word(adev->pdev,
>> + PCI_EXP_DEVSTA,
>> + &tmp16);
>> if (tmp16 & PCI_EXP_DEVSTA_TRPND)
>> break;
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg);
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &bridge_cfg);
>> + pcie_capability_read_word(adev->pdev,
>> + PCI_EXP_LNKCTL,
>> + &gpu_cfg);
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &bridge_cfg2);
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &gpu_cfg2);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL2,
>> + &bridge_cfg2);
>> + pcie_capability_read_word(adev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + &gpu_cfg2);
>>
>> tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
>> tmp |= LC_SET_QUIESCE;
>> @@ -1726,31 +1731,44 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
>>
>> mdelay(100);
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &tmp16);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL_HAWD;
>> tmp16 |= (bridge_cfg & PCI_EXP_LNKCTL_HAWD);
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(root, PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, &tmp16);
>> + pcie_capability_read_word(adev->pdev,
>> + PCI_EXP_LNKCTL,
>> + &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL_HAWD;
>> tmp16 |= (gpu_cfg & PCI_EXP_LNKCTL_HAWD);
>> - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(adev->pdev,
>> + PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL2,
>> + &tmp16);
>> tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN);
>> tmp16 |= (bridge_cfg2 &
>> (PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN));
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(root,
>> + PCI_EXP_LNKCTL2,
>> + tmp16);
>>
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(adev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + &tmp16);
>> tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN);
>> tmp16 |= (gpu_cfg2 &
>> (PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN));
>> - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(adev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + tmp16);
>>
>> tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
>> tmp &= ~LC_SET_QUIESCE;
>> @@ -1763,15 +1781,16 @@ static void si_pcie_gen3_enable(struct amdgpu_device *adev)
>> speed_cntl &= ~LC_FORCE_DIS_SW_SPEED_CHANGE;
>> WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, speed_cntl);
>>
>> - pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(adev->pdev, PCI_EXP_LNKCTL2, &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL2_TLS;
>> +
>> if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3)
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */
>> else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2)
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */
>> else
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */
>> - pci_write_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(adev->pdev, PCI_EXP_LNKCTL2, tmp16);
>>
>> speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL);
>> speed_cntl |= LC_INITIATE_LINK_SPEED_CHANGE;
>> diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
>> index a280442c81aa..09a4709e67f0 100644
>> --- a/drivers/gpu/drm/radeon/cik.c
>> +++ b/drivers/gpu/drm/radeon/cik.c
>> @@ -9504,7 +9504,6 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
>> {
>> struct pci_dev *root = rdev->pdev->bus->self;
>> enum pci_bus_speed speed_cap;
>> - int bridge_pos, gpu_pos;
>> u32 speed_cntl, current_data_rate;
>> int i;
>> u16 tmp16;
>> @@ -9546,12 +9545,7 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
>> DRM_INFO("enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0\n");
>> }
>>
>> - bridge_pos = pci_pcie_cap(root);
>> - if (!bridge_pos)
>> - return;
>> -
>> - gpu_pos = pci_pcie_cap(rdev->pdev);
>> - if (!gpu_pos)
>> + if (!pci_is_pcie(root) || !pci_is_pcie(rdev->pdev))
>> return;
>>
>> if (speed_cap == PCIE_SPEED_8_0GT) {
>> @@ -9561,14 +9555,17 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
>> u16 bridge_cfg2, gpu_cfg2;
>> u32 max_lw, current_lw, tmp;
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg);
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &bridge_cfg);
>> + pcie_capability_read_word(rdev->pdev, PCI_EXP_LNKCTL,
>> + &gpu_cfg);
>>
>> tmp16 = bridge_cfg | PCI_EXP_LNKCTL_HAWD;
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(root, PCI_EXP_LNKCTL, tmp16);
>>
>> tmp16 = gpu_cfg | PCI_EXP_LNKCTL_HAWD;
>> - pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(rdev->pdev, PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> tmp = RREG32_PCIE_PORT(PCIE_LC_STATUS1);
>> max_lw = (tmp & LC_DETECTED_LINK_WIDTH_MASK) >> LC_DETECTED_LINK_WIDTH_SHIFT;
>> @@ -9586,15 +9583,23 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
>>
>> for (i = 0; i < 10; i++) {
>> /* check status */
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_DEVSTA, &tmp16);
>> + pcie_capability_read_word(rdev->pdev,
>> + PCI_EXP_DEVSTA,
>> + &tmp16);
>> if (tmp16 & PCI_EXP_DEVSTA_TRPND)
>> break;
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg);
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &bridge_cfg);
>> + pcie_capability_read_word(rdev->pdev,
>> + PCI_EXP_LNKCTL,
>> + &gpu_cfg);
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &bridge_cfg2);
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &gpu_cfg2);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL2,
>> + &bridge_cfg2);
>> + pcie_capability_read_word(rdev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + &gpu_cfg2);
>>
>> tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
>> tmp |= LC_SET_QUIESCE;
>> @@ -9607,32 +9612,45 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
>> msleep(100);
>>
>> /* linkctl */
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &tmp16);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL_HAWD;
>> tmp16 |= (bridge_cfg & PCI_EXP_LNKCTL_HAWD);
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(root, PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL, &tmp16);
>> + pcie_capability_read_word(rdev->pdev,
>> + PCI_EXP_LNKCTL,
>> + &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL_HAWD;
>> tmp16 |= (gpu_cfg & PCI_EXP_LNKCTL_HAWD);
>> - pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(rdev->pdev,
>> + PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> /* linkctl2 */
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL2,
>> + &tmp16);
>> tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN);
>> tmp16 |= (bridge_cfg2 &
>> (PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN));
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(root,
>> + PCI_EXP_LNKCTL2,
>> + tmp16);
>>
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(rdev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + &tmp16);
>> tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN);
>> tmp16 |= (gpu_cfg2 &
>> (PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN));
>> - pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(rdev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + tmp16);
>>
>> tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
>> tmp &= ~LC_SET_QUIESCE;
>> @@ -9646,7 +9664,7 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
>> speed_cntl &= ~LC_FORCE_DIS_SW_SPEED_CHANGE;
>> WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, speed_cntl);
>>
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(rdev->pdev, PCI_EXP_LNKCTL2, &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL2_TLS;
>> if (speed_cap == PCIE_SPEED_8_0GT)
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */
>> @@ -9654,7 +9672,7 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */
>> else
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */
>> - pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(rdev->pdev, PCI_EXP_LNKCTL2, tmp16);
>>
>> speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL);
>> speed_cntl |= LC_INITIATE_LINK_SPEED_CHANGE;
>> diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
>> index 529e70a42019..67a98b3370d1 100644
>> --- a/drivers/gpu/drm/radeon/si.c
>> +++ b/drivers/gpu/drm/radeon/si.c
>> @@ -3257,7 +3257,7 @@ static void si_gpu_init(struct radeon_device *rdev)
>> /* XXX what about 12? */
>> rdev->config.si.tile_config |= (3 << 0);
>> break;
>> - }
>> + }
>> switch ((mc_arb_ramcfg & NOOFBANK_MASK) >> NOOFBANK_SHIFT) {
>> case 0: /* four banks */
>> rdev->config.si.tile_config |= 0 << 4;
>> @@ -7087,7 +7087,6 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev)
>> {
>> struct pci_dev *root = rdev->pdev->bus->self;
>> enum pci_bus_speed speed_cap;
>> - int bridge_pos, gpu_pos;
>> u32 speed_cntl, current_data_rate;
>> int i;
>> u16 tmp16;
>> @@ -7129,12 +7128,7 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev)
>> DRM_INFO("enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0\n");
>> }
>>
>> - bridge_pos = pci_pcie_cap(root);
>> - if (!bridge_pos)
>> - return;
>> -
>> - gpu_pos = pci_pcie_cap(rdev->pdev);
>> - if (!gpu_pos)
>> + if (!pci_is_pcie(root) || !pci_is_pcie(rdev->pdev))
>> return;
>>
>> if (speed_cap == PCIE_SPEED_8_0GT) {
>> @@ -7144,14 +7138,17 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev)
>> u16 bridge_cfg2, gpu_cfg2;
>> u32 max_lw, current_lw, tmp;
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg);
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &bridge_cfg);
>> + pcie_capability_read_word(rdev->pdev, PCI_EXP_LNKCTL,
>> + &gpu_cfg);
>>
>> tmp16 = bridge_cfg | PCI_EXP_LNKCTL_HAWD;
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(root, PCI_EXP_LNKCTL, tmp16);
>>
>> tmp16 = gpu_cfg | PCI_EXP_LNKCTL_HAWD;
>> - pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(rdev->pdev, PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> tmp = RREG32_PCIE(PCIE_LC_STATUS1);
>> max_lw = (tmp & LC_DETECTED_LINK_WIDTH_MASK) >> LC_DETECTED_LINK_WIDTH_SHIFT;
>> @@ -7169,15 +7166,23 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev)
>>
>> for (i = 0; i < 10; i++) {
>> /* check status */
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_DEVSTA, &tmp16);
>> + pcie_capability_read_word(rdev->pdev,
>> + PCI_EXP_DEVSTA,
>> + &tmp16);
>> if (tmp16 & PCI_EXP_DEVSTA_TRPND)
>> break;
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &bridge_cfg);
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL, &gpu_cfg);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &bridge_cfg);
>> + pcie_capability_read_word(rdev->pdev,
>> + PCI_EXP_LNKCTL,
>> + &gpu_cfg);
>>
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &bridge_cfg2);
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &gpu_cfg2);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL2,
>> + &bridge_cfg2);
>> + pcie_capability_read_word(rdev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + &gpu_cfg2);
>>
>> tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
>> tmp |= LC_SET_QUIESCE;
>> @@ -7190,32 +7195,46 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev)
>> msleep(100);
>>
>> /* linkctl */
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &tmp16);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL,
>> + &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL_HAWD;
>> tmp16 |= (bridge_cfg & PCI_EXP_LNKCTL_HAWD);
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(root,
>> + PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL, &tmp16);
>> + pcie_capability_read_word(rdev->pdev,
>> + PCI_EXP_LNKCTL,
>> + &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL_HAWD;
>> tmp16 |= (gpu_cfg & PCI_EXP_LNKCTL_HAWD);
>> - pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL, tmp16);
>> + pcie_capability_write_word(rdev->pdev,
>> + PCI_EXP_LNKCTL,
>> + tmp16);
>>
>> /* linkctl2 */
>> - pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(root, PCI_EXP_LNKCTL2,
>> + &tmp16);
>> tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN);
>> tmp16 |= (bridge_cfg2 &
>> (PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN));
>> - pci_write_config_word(root, bridge_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(root,
>> + PCI_EXP_LNKCTL2,
>> + tmp16);
>>
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(rdev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + &tmp16);
>> tmp16 &= ~(PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN);
>> tmp16 |= (gpu_cfg2 &
>> (PCI_EXP_LNKCTL2_ENTER_COMP |
>> PCI_EXP_LNKCTL2_TX_MARGIN));
>> - pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(rdev->pdev,
>> + PCI_EXP_LNKCTL2,
>> + tmp16);
>>
>> tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL4);
>> tmp &= ~LC_SET_QUIESCE;
>> @@ -7229,7 +7248,7 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev)
>> speed_cntl &= ~LC_FORCE_DIS_SW_SPEED_CHANGE;
>> WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, speed_cntl);
>>
>> - pci_read_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
>> + pcie_capability_read_word(rdev->pdev, PCI_EXP_LNKCTL2, &tmp16);
>> tmp16 &= ~PCI_EXP_LNKCTL2_TLS;
>> if (speed_cap == PCIE_SPEED_8_0GT)
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_8_0GT; /* gen3 */
>> @@ -7237,7 +7256,7 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev)
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_5_0GT; /* gen2 */
>> else
>> tmp16 |= PCI_EXP_LNKCTL2_TLS_2_5GT; /* gen1 */
>> - pci_write_config_word(rdev->pdev, gpu_pos + PCI_EXP_LNKCTL2, tmp16);
>> + pcie_capability_write_word(rdev->pdev, PCI_EXP_LNKCTL2, tmp16);
>>
>> speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL);
>> speed_cntl |= LC_INITIATE_LINK_SPEED_CHANGE;
>> --
>> 2.20.1
>>
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel@...ts.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
Thanks,
Frederick Lawler
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