[PATCH 01/11] drm/radeon: rework vm_flush parameters

Christian König deathsimple at vodafone.de
Wed Nov 19 11:40:15 PST 2014


Am 19.11.2014 um 19:28 schrieb Alex Deucher:
> On Wed, Nov 19, 2014 at 8:01 AM, Christian König
> <deathsimple at vodafone.de> wrote:
>> From: Christian König <christian.koenig at amd.com>
>>
>> Use ring structure instead of index and provide vm_id and pd_addr separately.
>>
>> Signed-off-by: Christian König <christian.koenig at amd.com>
> Pushed to my 3.19-wip tree.  I'll send out a new radeon drm-next pull
> request later today or tomorrow.

Please note that I had to fix another bug in the last patch pointed out 
by Kai Wasserbäch.

The updated patch should already be in your inbox.

Christian.

>
> Alex
>
>> ---
>>   drivers/gpu/drm/radeon/cik.c         | 23 ++++++++++-------------
>>   drivers/gpu/drm/radeon/cik_sdma.c    | 22 +++++++++-------------
>>   drivers/gpu/drm/radeon/ni.c          | 14 +++++---------
>>   drivers/gpu/drm/radeon/ni_dma.c      | 14 +++++---------
>>   drivers/gpu/drm/radeon/radeon.h      |  5 +++--
>>   drivers/gpu/drm/radeon/radeon_asic.h | 18 ++++++++++++------
>>   drivers/gpu/drm/radeon/radeon_vm.c   |  3 ++-
>>   drivers/gpu/drm/radeon/si.c          | 18 +++++++-----------
>>   drivers/gpu/drm/radeon/si_dma.c      | 19 ++++++++-----------
>>   9 files changed, 61 insertions(+), 75 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
>> index 57a359d..d52ead9 100644
>> --- a/drivers/gpu/drm/radeon/cik.c
>> +++ b/drivers/gpu/drm/radeon/cik.c
>> @@ -5967,26 +5967,23 @@ static void cik_vm_decode_fault(struct radeon_device *rdev,
>>    * Update the page table base and flush the VM TLB
>>    * using the CP (CIK).
>>    */
>> -void cik_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>> +void cik_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                 unsigned vm_id, uint64_t pd_addr)
>>   {
>> -       struct radeon_ring *ring = &rdev->ring[ridx];
>> -       int usepfp = (ridx == RADEON_RING_TYPE_GFX_INDEX);
>> -
>> -       if (vm == NULL)
>> -               return;
>> +       int usepfp = (ring->idx == RADEON_RING_TYPE_GFX_INDEX);
>>
>>          radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
>>          radeon_ring_write(ring, (WRITE_DATA_ENGINE_SEL(usepfp) |
>>                                   WRITE_DATA_DST_SEL(0)));
>> -       if (vm->id < 8) {
>> +       if (vm_id < 8) {
>>                  radeon_ring_write(ring,
>> -                                 (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2)) >> 2);
>> +                                 (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm_id << 2)) >> 2);
>>          } else {
>>                  radeon_ring_write(ring,
>> -                                 (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm->id - 8) << 2)) >> 2);
>> +                                 (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm_id - 8) << 2)) >> 2);
>>          }
>>          radeon_ring_write(ring, 0);
>> -       radeon_ring_write(ring, vm->pd_gpu_addr >> 12);
>> +       radeon_ring_write(ring, pd_addr >> 12);
>>
>>          /* update SH_MEM_* regs */
>>          radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
>> @@ -5994,7 +5991,7 @@ void cik_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>>                                   WRITE_DATA_DST_SEL(0)));
>>          radeon_ring_write(ring, SRBM_GFX_CNTL >> 2);
>>          radeon_ring_write(ring, 0);
>> -       radeon_ring_write(ring, VMID(vm->id));
>> +       radeon_ring_write(ring, VMID(vm_id));
>>
>>          radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 6));
>>          radeon_ring_write(ring, (WRITE_DATA_ENGINE_SEL(usepfp) |
>> @@ -6015,7 +6012,7 @@ void cik_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>>          radeon_ring_write(ring, VMID(0));
>>
>>          /* HDP flush */
>> -       cik_hdp_flush_cp_ring_emit(rdev, ridx);
>> +       cik_hdp_flush_cp_ring_emit(rdev, ring->idx);
>>
>>          /* bits 0-15 are the VM contexts0-15 */
>>          radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
>> @@ -6023,7 +6020,7 @@ void cik_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>>                                   WRITE_DATA_DST_SEL(0)));
>>          radeon_ring_write(ring, VM_INVALIDATE_REQUEST >> 2);
>>          radeon_ring_write(ring, 0);
>> -       radeon_ring_write(ring, 1 << vm->id);
>> +       radeon_ring_write(ring, 1 << vm_id);
>>
>>          /* compute doesn't have PFP */
>>          if (usepfp) {
>> diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c
>> index 4e8432d..7470a2e 100644
>> --- a/drivers/gpu/drm/radeon/cik_sdma.c
>> +++ b/drivers/gpu/drm/radeon/cik_sdma.c
>> @@ -901,25 +901,21 @@ void cik_sdma_vm_pad_ib(struct radeon_ib *ib)
>>    * Update the page table base and flush the VM TLB
>>    * using sDMA (CIK).
>>    */
>> -void cik_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>> +void cik_dma_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                     unsigned vm_id, uint64_t pd_addr)
>>   {
>> -       struct radeon_ring *ring = &rdev->ring[ridx];
>> -
>> -       if (vm == NULL)
>> -               return;
>> -
>>          radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
>> -       if (vm->id < 8) {
>> -               radeon_ring_write(ring, (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2)) >> 2);
>> +       if (vm_id < 8) {
>> +               radeon_ring_write(ring, (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm_id << 2)) >> 2);
>>          } else {
>> -               radeon_ring_write(ring, (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm->id - 8) << 2)) >> 2);
>> +               radeon_ring_write(ring, (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm_id - 8) << 2)) >> 2);
>>          }
>> -       radeon_ring_write(ring, vm->pd_gpu_addr >> 12);
>> +       radeon_ring_write(ring, pd_addr >> 12);
>>
>>          /* update SH_MEM_* regs */
>>          radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
>>          radeon_ring_write(ring, SRBM_GFX_CNTL >> 2);
>> -       radeon_ring_write(ring, VMID(vm->id));
>> +       radeon_ring_write(ring, VMID(vm_id));
>>
>>          radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
>>          radeon_ring_write(ring, SH_MEM_BASES >> 2);
>> @@ -942,11 +938,11 @@ void cik_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm
>>          radeon_ring_write(ring, VMID(0));
>>
>>          /* flush HDP */
>> -       cik_sdma_hdp_flush_ring_emit(rdev, ridx);
>> +       cik_sdma_hdp_flush_ring_emit(rdev, ring->idx);
>>
>>          /* flush TLB */
>>          radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
>>          radeon_ring_write(ring, VM_INVALIDATE_REQUEST >> 2);
>> -       radeon_ring_write(ring, 1 << vm->id);
>> +       radeon_ring_write(ring, 1 << vm_id);
>>   }
>>
>> diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
>> index 3faee58..bee432d 100644
>> --- a/drivers/gpu/drm/radeon/ni.c
>> +++ b/drivers/gpu/drm/radeon/ni.c
>> @@ -2502,15 +2502,11 @@ void cayman_vm_decode_fault(struct radeon_device *rdev,
>>    * Update the page table base and flush the VM TLB
>>    * using the CP (cayman-si).
>>    */
>> -void cayman_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>> +void cayman_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                    unsigned vm_id, uint64_t pd_addr)
>>   {
>> -       struct radeon_ring *ring = &rdev->ring[ridx];
>> -
>> -       if (vm == NULL)
>> -               return;
>> -
>> -       radeon_ring_write(ring, PACKET0(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2), 0));
>> -       radeon_ring_write(ring, vm->pd_gpu_addr >> 12);
>> +       radeon_ring_write(ring, PACKET0(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm_id << 2), 0));
>> +       radeon_ring_write(ring, pd_addr >> 12);
>>
>>          /* flush hdp cache */
>>          radeon_ring_write(ring, PACKET0(HDP_MEM_COHERENCY_FLUSH_CNTL, 0));
>> @@ -2518,7 +2514,7 @@ void cayman_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>>
>>          /* bits 0-7 are the VM contexts0-7 */
>>          radeon_ring_write(ring, PACKET0(VM_INVALIDATE_REQUEST, 0));
>> -       radeon_ring_write(ring, 1 << vm->id);
>> +       radeon_ring_write(ring, 1 << vm_id);
>>
>>          /* sync PFP to ME, otherwise we might get invalid PFP reads */
>>          radeon_ring_write(ring, PACKET3(PACKET3_PFP_SYNC_ME, 0));
>> diff --git a/drivers/gpu/drm/radeon/ni_dma.c b/drivers/gpu/drm/radeon/ni_dma.c
>> index f26f0a9..5a72404 100644
>> --- a/drivers/gpu/drm/radeon/ni_dma.c
>> +++ b/drivers/gpu/drm/radeon/ni_dma.c
>> @@ -446,16 +446,12 @@ void cayman_dma_vm_pad_ib(struct radeon_ib *ib)
>>                  ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0);
>>   }
>>
>> -void cayman_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>> +void cayman_dma_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                        unsigned vm_id, uint64_t pd_addr)
>>   {
>> -       struct radeon_ring *ring = &rdev->ring[ridx];
>> -
>> -       if (vm == NULL)
>> -               return;
>> -
>>          radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0));
>> -       radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2)) >> 2));
>> -       radeon_ring_write(ring, vm->pd_gpu_addr >> 12);
>> +       radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm_id << 2)) >> 2));
>> +       radeon_ring_write(ring, pd_addr >> 12);
>>
>>          /* flush hdp cache */
>>          radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0));
>> @@ -465,6 +461,6 @@ void cayman_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm
>>          /* bits 0-7 are the VM contexts0-7 */
>>          radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0));
>>          radeon_ring_write(ring, (0xf << 16) | (VM_INVALIDATE_REQUEST >> 2));
>> -       radeon_ring_write(ring, 1 << vm->id);
>> +       radeon_ring_write(ring, 1 << vm_id);
>>   }
>>
>> diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
>> index 908f349..5d913ef 100644
>> --- a/drivers/gpu/drm/radeon/radeon.h
>> +++ b/drivers/gpu/drm/radeon/radeon.h
>> @@ -1790,7 +1790,8 @@ struct radeon_asic_ring {
>>          void (*hdp_flush)(struct radeon_device *rdev, struct radeon_ring *ring);
>>          bool (*emit_semaphore)(struct radeon_device *rdev, struct radeon_ring *cp,
>>                                 struct radeon_semaphore *semaphore, bool emit_wait);
>> -       void (*vm_flush)(struct radeon_device *rdev, int ridx, struct radeon_vm *vm);
>> +       void (*vm_flush)(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                        unsigned vm_id, uint64_t pd_addr);
>>
>>          /* testing functions */
>>          int (*ring_test)(struct radeon_device *rdev, struct radeon_ring *cp);
>> @@ -2836,7 +2837,7 @@ static inline void radeon_ring_write(struct radeon_ring *ring, uint32_t v)
>>   #define radeon_ring_ib_execute(rdev, r, ib) (rdev)->asic->ring[(r)]->ib_execute((rdev), (ib))
>>   #define radeon_ring_ib_parse(rdev, r, ib) (rdev)->asic->ring[(r)]->ib_parse((rdev), (ib))
>>   #define radeon_ring_is_lockup(rdev, r, cp) (rdev)->asic->ring[(r)]->is_lockup((rdev), (cp))
>> -#define radeon_ring_vm_flush(rdev, r, vm) (rdev)->asic->ring[(r)]->vm_flush((rdev), (r), (vm))
>> +#define radeon_ring_vm_flush(rdev, r, vm_id, pd_addr) (rdev)->asic->ring[(r)->idx]->vm_flush((rdev), (r), (vm_id), (pd_addr))
>>   #define radeon_ring_get_rptr(rdev, r) (rdev)->asic->ring[(r)->idx]->get_rptr((rdev), (r))
>>   #define radeon_ring_get_wptr(rdev, r) (rdev)->asic->ring[(r)->idx]->get_wptr((rdev), (r))
>>   #define radeon_ring_set_wptr(rdev, r) (rdev)->asic->ring[(r)->idx]->set_wptr((rdev), (r))
>> diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
>> index d8ace5b..2a45d54 100644
>> --- a/drivers/gpu/drm/radeon/radeon_asic.h
>> +++ b/drivers/gpu/drm/radeon/radeon_asic.h
>> @@ -599,7 +599,8 @@ int cayman_asic_reset(struct radeon_device *rdev);
>>   void cayman_ring_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib);
>>   int cayman_vm_init(struct radeon_device *rdev);
>>   void cayman_vm_fini(struct radeon_device *rdev);
>> -void cayman_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm);
>> +void cayman_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                    unsigned vm_id, uint64_t pd_addr);
>>   uint32_t cayman_vm_page_flags(struct radeon_device *rdev, uint32_t flags);
>>   int evergreen_ib_parse(struct radeon_device *rdev, struct radeon_ib *ib);
>>   int evergreen_dma_ib_parse(struct radeon_device *rdev, struct radeon_ib *ib);
>> @@ -624,7 +625,8 @@ void cayman_dma_vm_set_pages(struct radeon_device *rdev,
>>                               uint32_t incr, uint32_t flags);
>>   void cayman_dma_vm_pad_ib(struct radeon_ib *ib);
>>
>> -void cayman_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm);
>> +void cayman_dma_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                        unsigned vm_id, uint64_t pd_addr);
>>
>>   u32 cayman_gfx_get_rptr(struct radeon_device *rdev,
>>                          struct radeon_ring *ring);
>> @@ -699,7 +701,8 @@ int si_irq_set(struct radeon_device *rdev);
>>   int si_irq_process(struct radeon_device *rdev);
>>   int si_vm_init(struct radeon_device *rdev);
>>   void si_vm_fini(struct radeon_device *rdev);
>> -void si_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm);
>> +void si_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                unsigned vm_id, uint64_t pd_addr);
>>   int si_ib_parse(struct radeon_device *rdev, struct radeon_ib *ib);
>>   struct radeon_fence *si_copy_dma(struct radeon_device *rdev,
>>                                   uint64_t src_offset, uint64_t dst_offset,
>> @@ -721,7 +724,8 @@ void si_dma_vm_set_pages(struct radeon_device *rdev,
>>                           uint64_t addr, unsigned count,
>>                           uint32_t incr, uint32_t flags);
>>
>> -void si_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm);
>> +void si_dma_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                    unsigned vm_id, uint64_t pd_addr);
>>   u32 si_get_xclk(struct radeon_device *rdev);
>>   uint64_t si_get_gpu_clock_counter(struct radeon_device *rdev);
>>   int si_set_uvd_clocks(struct radeon_device *rdev, u32 vclk, u32 dclk);
>> @@ -793,7 +797,8 @@ int cik_irq_set(struct radeon_device *rdev);
>>   int cik_irq_process(struct radeon_device *rdev);
>>   int cik_vm_init(struct radeon_device *rdev);
>>   void cik_vm_fini(struct radeon_device *rdev);
>> -void cik_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm);
>> +void cik_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                 unsigned vm_id, uint64_t pd_addr);
>>
>>   void cik_sdma_vm_copy_pages(struct radeon_device *rdev,
>>                              struct radeon_ib *ib,
>> @@ -811,7 +816,8 @@ void cik_sdma_vm_set_pages(struct radeon_device *rdev,
>>                             uint32_t incr, uint32_t flags);
>>   void cik_sdma_vm_pad_ib(struct radeon_ib *ib);
>>
>> -void cik_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm);
>> +void cik_dma_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                     unsigned vm_id, uint64_t pd_addr);
>>   int cik_ib_parse(struct radeon_device *rdev, struct radeon_ib *ib);
>>   u32 cik_gfx_get_rptr(struct radeon_device *rdev,
>>                       struct radeon_ring *ring);
>> diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
>> index dfde266..9d0f87b 100644
>> --- a/drivers/gpu/drm/radeon/radeon_vm.c
>> +++ b/drivers/gpu/drm/radeon/radeon_vm.c
>> @@ -243,7 +243,8 @@ void radeon_vm_flush(struct radeon_device *rdev,
>>          if (!vm->last_flush || pd_addr != vm->pd_gpu_addr) {
>>                  trace_radeon_vm_flush(pd_addr, ring, vm->id);
>>                  vm->pd_gpu_addr = pd_addr;
>> -               radeon_ring_vm_flush(rdev, ring, vm);
>> +               radeon_ring_vm_flush(rdev, &rdev->ring[ring],
>> +                                    vm->id, vm->pd_gpu_addr);
>>          }
>>   }
>>
>> diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
>> index eeea5b6..e91968b 100644
>> --- a/drivers/gpu/drm/radeon/si.c
>> +++ b/drivers/gpu/drm/radeon/si.c
>> @@ -5020,27 +5020,23 @@ static void si_vm_decode_fault(struct radeon_device *rdev,
>>                 block, mc_id);
>>   }
>>
>> -void si_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>> +void si_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                unsigned vm_id, uint64_t pd_addr)
>>   {
>> -       struct radeon_ring *ring = &rdev->ring[ridx];
>> -
>> -       if (vm == NULL)
>> -               return;
>> -
>>          /* write new base address */
>>          radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
>>          radeon_ring_write(ring, (WRITE_DATA_ENGINE_SEL(1) |
>>                                   WRITE_DATA_DST_SEL(0)));
>>
>> -       if (vm->id < 8) {
>> +       if (vm_id < 8) {
>>                  radeon_ring_write(ring,
>> -                                 (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2)) >> 2);
>> +                                 (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm_id << 2)) >> 2);
>>          } else {
>>                  radeon_ring_write(ring,
>> -                                 (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm->id - 8) << 2)) >> 2);
>> +                                 (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm_id - 8) << 2)) >> 2);
>>          }
>>          radeon_ring_write(ring, 0);
>> -       radeon_ring_write(ring, vm->pd_gpu_addr >> 12);
>> +       radeon_ring_write(ring, pd_addr >> 12);
>>
>>          /* flush hdp cache */
>>          radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
>> @@ -5056,7 +5052,7 @@ void si_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>>                                   WRITE_DATA_DST_SEL(0)));
>>          radeon_ring_write(ring, VM_INVALIDATE_REQUEST >> 2);
>>          radeon_ring_write(ring, 0);
>> -       radeon_ring_write(ring, 1 << vm->id);
>> +       radeon_ring_write(ring, 1 << vm_id);
>>
>>          /* sync PFP to ME, otherwise we might get invalid PFP reads */
>>          radeon_ring_write(ring, PACKET3(PACKET3_PFP_SYNC_ME, 0));
>> diff --git a/drivers/gpu/drm/radeon/si_dma.c b/drivers/gpu/drm/radeon/si_dma.c
>> index b58f12b..e8bc0a5 100644
>> --- a/drivers/gpu/drm/radeon/si_dma.c
>> +++ b/drivers/gpu/drm/radeon/si_dma.c
>> @@ -185,20 +185,17 @@ void si_dma_vm_set_pages(struct radeon_device *rdev,
>>          }
>>   }
>>
>> -void si_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>> -{
>> -       struct radeon_ring *ring = &rdev->ring[ridx];
>> -
>> -       if (vm == NULL)
>> -               return;
>> +void si_dma_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
>> +                    unsigned vm_id, uint64_t pd_addr)
>>
>> +{
>>          radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
>> -       if (vm->id < 8) {
>> -               radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2)) >> 2));
>> +       if (vm_id < 8) {
>> +               radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm_id << 2)) >> 2));
>>          } else {
>> -               radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm->id - 8) << 2)) >> 2));
>> +               radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm_id - 8) << 2)) >> 2));
>>          }
>> -       radeon_ring_write(ring, vm->pd_gpu_addr >> 12);
>> +       radeon_ring_write(ring, pd_addr >> 12);
>>
>>          /* flush hdp cache */
>>          radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
>> @@ -208,7 +205,7 @@ void si_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
>>          /* bits 0-7 are the VM contexts0-7 */
>>          radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
>>          radeon_ring_write(ring, (0xf << 16) | (VM_INVALIDATE_REQUEST >> 2));
>> -       radeon_ring_write(ring, 1 << vm->id);
>> +       radeon_ring_write(ring, 1 << vm_id);
>>   }
>>
>>   /**
>> --
>> 1.9.1
>>



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