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Date: Thu, 18 Jun 2015 09:58:09 +0200
From: Christian König <christian.koenig@....com>
To: Kamal Mostafa <kamal@...onical.com>,
<linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>,
<kernel-team@...ts.ubuntu.com>
CC: Alex Deucher <alexander.deucher@....com>
Subject: Re: [PATCH 3.19.y-ckt 058/146] drm/radeon: fix VM_CONTEXT*_PAGE_TABLE_END_ADDR
handling
Please note that you also need to include the partial revert of this patch.
Fixing this for VM_CONTEXT0 had negative side effects for some users,
because of this I reverted parts of this patch and only kept the change
for VM_CONTEXT1 where it really matters.
Regards,
Christian.
On 18.06.2015 00:22, Kamal Mostafa wrote:
> 3.19.8-ckt2 -stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@....com>
>
> commit 607d48063512707a414e346972e2210dc71ab491 upstream.
>
> The mapping range is inclusive between starting and ending addresses.
>
> Signed-off-by: Christian König <christian.koenig@....com>
> Signed-off-by: Alex Deucher <alexander.deucher@....com>
> Signed-off-by: Kamal Mostafa <kamal@...onical.com>
> ---
> drivers/gpu/drm/radeon/cik.c | 4 ++--
> drivers/gpu/drm/radeon/evergreen.c | 2 +-
> drivers/gpu/drm/radeon/ni.c | 5 +++--
> drivers/gpu/drm/radeon/r600.c | 2 +-
> drivers/gpu/drm/radeon/rv770.c | 2 +-
> drivers/gpu/drm/radeon/si.c | 4 ++--
> 6 files changed, 10 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
> index 53b9ac3..799a29f 100644
> --- a/drivers/gpu/drm/radeon/cik.c
> +++ b/drivers/gpu/drm/radeon/cik.c
> @@ -5764,7 +5764,7 @@ static int cik_pcie_gart_enable(struct radeon_device *rdev)
> L2_CACHE_BIGK_FRAGMENT_SIZE(4));
> /* setup context0 */
> WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
> - WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
> + WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
> WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
> WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
> (u32)(rdev->dummy_page.addr >> 12));
> @@ -5779,7 +5779,7 @@ static int cik_pcie_gart_enable(struct radeon_device *rdev)
> /* restore context1-15 */
> /* set vm size, must be a multiple of 4 */
> WREG32(VM_CONTEXT1_PAGE_TABLE_START_ADDR, 0);
> - WREG32(VM_CONTEXT1_PAGE_TABLE_END_ADDR, rdev->vm_manager.max_pfn);
> + WREG32(VM_CONTEXT1_PAGE_TABLE_END_ADDR, rdev->vm_manager.max_pfn - 1);
> for (i = 1; i < 16; i++) {
> if (i < 8)
> WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2),
> diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
> index c674f63..d9f431d 100644
> --- a/drivers/gpu/drm/radeon/evergreen.c
> +++ b/drivers/gpu/drm/radeon/evergreen.c
> @@ -2456,7 +2456,7 @@ static int evergreen_pcie_gart_enable(struct radeon_device *rdev)
> WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
> WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
> WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
> - WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
> + WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
> WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
> WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
> RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
> diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
> index 88b2c36..16f912a 100644
> --- a/drivers/gpu/drm/radeon/ni.c
> +++ b/drivers/gpu/drm/radeon/ni.c
> @@ -1250,7 +1250,7 @@ static int cayman_pcie_gart_enable(struct radeon_device *rdev)
> L2_CACHE_BIGK_FRAGMENT_SIZE(6));
> /* setup context0 */
> WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
> - WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
> + WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
> WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
> WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
> (u32)(rdev->dummy_page.addr >> 12));
> @@ -1269,7 +1269,8 @@ static int cayman_pcie_gart_enable(struct radeon_device *rdev)
> */
> for (i = 1; i < 8; i++) {
> WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR + (i << 2), 0);
> - WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR + (i << 2), rdev->vm_manager.max_pfn);
> + WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR + (i << 2),
> + rdev->vm_manager.max_pfn - 1);
> WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2),
> rdev->vm_manager.saved_table_addr[i]);
> }
> diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
> index 0e2cf2a..64ca89e 100644
> --- a/drivers/gpu/drm/radeon/r600.c
> +++ b/drivers/gpu/drm/radeon/r600.c
> @@ -1085,7 +1085,7 @@ static int r600_pcie_gart_enable(struct radeon_device *rdev)
> WREG32(MC_VM_L1_TLB_MCB_RD_SEM_CNTL, tmp | ENABLE_SEMAPHORE_MODE);
> WREG32(MC_VM_L1_TLB_MCB_WR_SEM_CNTL, tmp | ENABLE_SEMAPHORE_MODE);
> WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
> - WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
> + WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
> WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
> WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
> RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
> diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
> index 372016e..819c2c1 100644
> --- a/drivers/gpu/drm/radeon/rv770.c
> +++ b/drivers/gpu/drm/radeon/rv770.c
> @@ -920,7 +920,7 @@ static int rv770_pcie_gart_enable(struct radeon_device *rdev)
> WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
> WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
> WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
> - WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
> + WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
> WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
> WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
> RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
> diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
> index eed21db..2c8be31 100644
> --- a/drivers/gpu/drm/radeon/si.c
> +++ b/drivers/gpu/drm/radeon/si.c
> @@ -4270,7 +4270,7 @@ static int si_pcie_gart_enable(struct radeon_device *rdev)
> L2_CACHE_BIGK_FRAGMENT_SIZE(4));
> /* setup context0 */
> WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
> - WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
> + WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
> WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
> WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
> (u32)(rdev->dummy_page.addr >> 12));
> @@ -4285,7 +4285,7 @@ static int si_pcie_gart_enable(struct radeon_device *rdev)
> /* empty context1-15 */
> /* set vm size, must be a multiple of 4 */
> WREG32(VM_CONTEXT1_PAGE_TABLE_START_ADDR, 0);
> - WREG32(VM_CONTEXT1_PAGE_TABLE_END_ADDR, rdev->vm_manager.max_pfn);
> + WREG32(VM_CONTEXT1_PAGE_TABLE_END_ADDR, rdev->vm_manager.max_pfn - 1);
> /* Assign the pt base to something valid for now; the pts used for
> * the VMs are determined by the application and setup and assigned
> * on the fly in the vm part of radeon_gart.c
--
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