[PATCH v6 10/16] drm/amdgpu: Guard against write accesses after device removal
Andrey Grodzovsky
andrey.grodzovsky at amd.com
Tue May 11 17:52:26 UTC 2021
On 2021-05-11 2:50 a.m., Christian König wrote:
> Am 10.05.21 um 18:36 schrieb Andrey Grodzovsky:
>> This should prevent writing to memory or IO ranges possibly
>> already allocated for other uses after our device is removed.
>>
>> v5:
>> Protect more places wher memcopy_to/form_io takes place
>> Protect IB submissions
>>
>> v6: Switch to !drm_dev_enter instead of scoping entire code
>> with brackets.
>>
>> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
>> ---
>> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 11 ++-
>> drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 9 +++
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 17 +++--
>> drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 63 +++++++++++------
>> drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h | 2 +
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 70 +++++++++++++++++++
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 49 ++-----------
>> drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 31 +++++---
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c | 11 ++-
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 22 ++++--
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 7 +-
>> drivers/gpu/drm/amd/amdgpu/psp_v11_0.c | 44 ++++++------
>> drivers/gpu/drm/amd/amdgpu/psp_v12_0.c | 8 +--
>> drivers/gpu/drm/amd/amdgpu/psp_v3_1.c | 8 +--
>> drivers/gpu/drm/amd/amdgpu/vce_v4_0.c | 26 ++++---
>> drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c | 22 +++---
>> .../drm/amd/pm/powerplay/smumgr/smu7_smumgr.c | 2 +
>> 17 files changed, 257 insertions(+), 145 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> index a0bff4713672..94c415176cdc 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> @@ -71,6 +71,8 @@
>> #include <drm/task_barrier.h>
>> #include <linux/pm_runtime.h>
>> +#include <drm/drm_drv.h>
>> +
>> MODULE_FIRMWARE("amdgpu/vega10_gpu_info.bin");
>> MODULE_FIRMWARE("amdgpu/vega12_gpu_info.bin");
>> MODULE_FIRMWARE("amdgpu/raven_gpu_info.bin");
>> @@ -281,7 +283,10 @@ void amdgpu_device_vram_access(struct
>> amdgpu_device *adev, loff_t pos,
>> unsigned long flags;
>> uint32_t hi = ~0;
>> uint64_t last;
>> + int idx;
>> + if (!drm_dev_enter(&adev->ddev, &idx))
>> + return;
>> #ifdef CONFIG_64BIT
>> last = min(pos + size, adev->gmc.visible_vram_size);
>> @@ -299,8 +304,10 @@ void amdgpu_device_vram_access(struct
>> amdgpu_device *adev, loff_t pos,
>> memcpy_fromio(buf, addr, count);
>> }
>> - if (count == size)
>> + if (count == size) {
>> + drm_dev_exit(idx);
>> return;
>> + }
>
> Maybe use a goto instead, but really just a nit pick.
>
>
>
>> pos += count;
>> buf += count / 4;
>> @@ -323,6 +330,8 @@ void amdgpu_device_vram_access(struct
>> amdgpu_device *adev, loff_t pos,
>> *buf++ = RREG32_NO_KIQ(mmMM_DATA);
>> }
>> spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
>> +
>> + drm_dev_exit(idx);
>> }
>> /*
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
>> index 4d32233cde92..04ba5eef1e88 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
>> @@ -31,6 +31,8 @@
>> #include "amdgpu_ras.h"
>> #include "amdgpu_xgmi.h"
>> +#include <drm/drm_drv.h>
>> +
>> /**
>> * amdgpu_gmc_pdb0_alloc - allocate vram for pdb0
>> *
>> @@ -151,6 +153,10 @@ int amdgpu_gmc_set_pte_pde(struct amdgpu_device
>> *adev, void *cpu_pt_addr,
>> {
>> void __iomem *ptr = (void *)cpu_pt_addr;
>> uint64_t value;
>> + int idx;
>> +
>> + if (!drm_dev_enter(&adev->ddev, &idx))
>> + return 0;
>> /*
>> * The following is for PTE only. GART does not have PDEs.
>> @@ -158,6 +164,9 @@ int amdgpu_gmc_set_pte_pde(struct amdgpu_device
>> *adev, void *cpu_pt_addr,
>> value = addr & 0x0000FFFFFFFFF000ULL;
>> value |= flags;
>> writeq(value, ptr + (gpu_page_idx * 8));
>> +
>> + drm_dev_exit(idx);
>> +
>> return 0;
>> }
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
>> index 148a3b481b12..62fcbd446c71 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
>> @@ -30,6 +30,7 @@
>> #include <linux/slab.h>
>> #include <drm/amdgpu_drm.h>
>> +#include <drm/drm_drv.h>
>> #include "amdgpu.h"
>> #include "atom.h"
>> @@ -137,7 +138,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring,
>> unsigned num_ibs,
>> bool secure;
>> unsigned i;
>> - int r = 0;
>> + int idx, r = 0;
>> bool need_pipe_sync = false;
>> if (num_ibs == 0)
>> @@ -169,13 +170,16 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring,
>> unsigned num_ibs,
>> return -EINVAL;
>> }
>> + if (!drm_dev_enter(&adev->ddev, &idx))
>> + return -ENODEV;
>> +
>> alloc_size = ring->funcs->emit_frame_size + num_ibs *
>> ring->funcs->emit_ib_size;
>> r = amdgpu_ring_alloc(ring, alloc_size);
>> if (r) {
>> dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
>> - return r;
>> + goto exit;
>> }
>> need_ctx_switch = ring->current_ctx != fence_ctx;
>> @@ -205,7 +209,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring,
>> unsigned num_ibs,
>> r = amdgpu_vm_flush(ring, job, need_pipe_sync);
>> if (r) {
>> amdgpu_ring_undo(ring);
>> - return r;
>> + goto exit;
>> }
>> }
>> @@ -286,7 +290,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring,
>> unsigned num_ibs,
>> if (job && job->vmid)
>> amdgpu_vmid_reset(adev, ring->funcs->vmhub, job->vmid);
>> amdgpu_ring_undo(ring);
>> - return r;
>> + goto exit;
>> }
>> if (ring->funcs->insert_end)
>> @@ -304,7 +308,10 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring,
>> unsigned num_ibs,
>> ring->funcs->emit_wave_limit(ring, false);
>> amdgpu_ring_commit(ring);
>> - return 0;
>> +
>> +exit:
>> + drm_dev_exit(idx);
>> + return r;
>> }
>> /**
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
>> index 9e769cf6095b..bb6afee61666 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
>> @@ -25,6 +25,7 @@
>> #include <linux/firmware.h>
>> #include <linux/dma-mapping.h>
>> +#include <drm/drm_drv.h>
>> #include "amdgpu.h"
>> #include "amdgpu_psp.h"
>> @@ -39,6 +40,8 @@
>> #include "amdgpu_ras.h"
>> #include "amdgpu_securedisplay.h"
>> +#include <drm/drm_drv.h>
>> +
>> static int psp_sysfs_init(struct amdgpu_device *adev);
>> static void psp_sysfs_fini(struct amdgpu_device *adev);
>> @@ -253,7 +256,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
>> struct psp_gfx_cmd_resp *cmd, uint64_t fence_mc_addr)
>> {
>> int ret;
>> - int index;
>> + int index, idx;
>> int timeout = 20000;
>> bool ras_intr = false;
>> bool skip_unsupport = false;
>> @@ -261,6 +264,9 @@ psp_cmd_submit_buf(struct psp_context *psp,
>> if (psp->adev->in_pci_err_recovery)
>> return 0;
>> + if (!drm_dev_enter(&psp->adev->ddev, &idx))
>> + return 0;
>> +
>> mutex_lock(&psp->mutex);
>> memset(psp->cmd_buf_mem, 0, PSP_CMD_BUFFER_SIZE);
>> @@ -271,8 +277,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
>> ret = psp_ring_cmd_submit(psp, psp->cmd_buf_mc_addr,
>> fence_mc_addr, index);
>> if (ret) {
>> atomic_dec(&psp->fence_value);
>> - mutex_unlock(&psp->mutex);
>> - return ret;
>> + goto exit;
>> }
>> amdgpu_asic_invalidate_hdp(psp->adev, NULL);
>> @@ -312,8 +317,8 @@ psp_cmd_submit_buf(struct psp_context *psp,
>> psp->cmd_buf_mem->cmd_id,
>> psp->cmd_buf_mem->resp.status);
>> if (!timeout) {
>> - mutex_unlock(&psp->mutex);
>> - return -EINVAL;
>> + ret = -EINVAL;
>> + goto exit;
>> }
>> }
>> @@ -321,8 +326,10 @@ psp_cmd_submit_buf(struct psp_context *psp,
>> ucode->tmr_mc_addr_lo = psp->cmd_buf_mem->resp.fw_addr_lo;
>> ucode->tmr_mc_addr_hi = psp->cmd_buf_mem->resp.fw_addr_hi;
>> }
>> - mutex_unlock(&psp->mutex);
>> +exit:
>> + mutex_unlock(&psp->mutex);
>> + drm_dev_exit(idx);
>> return ret;
>> }
>> @@ -359,8 +366,7 @@ static int psp_load_toc(struct psp_context *psp,
>> if (!cmd)
>> return -ENOMEM;
>> /* Copy toc to psp firmware private buffer */
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> - memcpy(psp->fw_pri_buf, psp->toc_start_addr, psp->toc_bin_size);
>> + psp_copy_fw(psp, psp->toc_start_addr, psp->toc_bin_size);
>> psp_prep_load_toc_cmd_buf(cmd, psp->fw_pri_mc_addr,
>> psp->toc_bin_size);
>> @@ -625,8 +631,7 @@ static int psp_asd_load(struct psp_context *psp)
>> if (!cmd)
>> return -ENOMEM;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> - memcpy(psp->fw_pri_buf, psp->asd_start_addr, psp->asd_ucode_size);
>> + psp_copy_fw(psp, psp->asd_start_addr, psp->asd_ucode_size);
>> psp_prep_asd_load_cmd_buf(cmd, psp->fw_pri_mc_addr,
>> psp->asd_ucode_size);
>> @@ -781,8 +786,7 @@ static int psp_xgmi_load(struct psp_context *psp)
>> if (!cmd)
>> return -ENOMEM;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> - memcpy(psp->fw_pri_buf, psp->ta_xgmi_start_addr,
>> psp->ta_xgmi_ucode_size);
>> + psp_copy_fw(psp, psp->ta_xgmi_start_addr, psp->ta_xgmi_ucode_size);
>> psp_prep_ta_load_cmd_buf(cmd,
>> psp->fw_pri_mc_addr,
>> @@ -1038,8 +1042,7 @@ static int psp_ras_load(struct psp_context *psp)
>> if (!cmd)
>> return -ENOMEM;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> - memcpy(psp->fw_pri_buf, psp->ta_ras_start_addr,
>> psp->ta_ras_ucode_size);
>> + psp_copy_fw(psp, psp->ta_ras_start_addr, psp->ta_ras_ucode_size);
>> psp_prep_ta_load_cmd_buf(cmd,
>> psp->fw_pri_mc_addr,
>> @@ -1275,8 +1278,7 @@ static int psp_hdcp_load(struct psp_context *psp)
>> if (!cmd)
>> return -ENOMEM;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> - memcpy(psp->fw_pri_buf, psp->ta_hdcp_start_addr,
>> + psp_copy_fw(psp, psp->ta_hdcp_start_addr,
>> psp->ta_hdcp_ucode_size);
>> psp_prep_ta_load_cmd_buf(cmd,
>> @@ -1427,8 +1429,7 @@ static int psp_dtm_load(struct psp_context *psp)
>> if (!cmd)
>> return -ENOMEM;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> - memcpy(psp->fw_pri_buf, psp->ta_dtm_start_addr,
>> psp->ta_dtm_ucode_size);
>> + psp_copy_fw(psp, psp->ta_dtm_start_addr, psp->ta_dtm_ucode_size);
>> psp_prep_ta_load_cmd_buf(cmd,
>> psp->fw_pri_mc_addr,
>> @@ -1573,8 +1574,7 @@ static int psp_rap_load(struct psp_context *psp)
>> if (!cmd)
>> return -ENOMEM;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> - memcpy(psp->fw_pri_buf, psp->ta_rap_start_addr,
>> psp->ta_rap_ucode_size);
>> + psp_copy_fw(psp, psp->ta_rap_start_addr, psp->ta_rap_ucode_size);
>> psp_prep_ta_load_cmd_buf(cmd,
>> psp->fw_pri_mc_addr,
>> @@ -3022,7 +3022,7 @@ static ssize_t psp_usbc_pd_fw_sysfs_write(struct
>> device *dev,
>> struct amdgpu_device *adev = drm_to_adev(ddev);
>> void *cpu_addr;
>> dma_addr_t dma_addr;
>> - int ret;
>> + int ret, idx;
>> char fw_name[100];
>> const struct firmware *usbc_pd_fw;
>> @@ -3031,6 +3031,9 @@ static ssize_t psp_usbc_pd_fw_sysfs_write(struct
>> device *dev,
>> return -EBUSY;
>> }
>> + if (!drm_dev_enter(ddev, &idx))
>> + return -ENODEV;
>> +
>> snprintf(fw_name, sizeof(fw_name), "amdgpu/%s", buf);
>> ret = request_firmware(&usbc_pd_fw, fw_name, adev->dev);
>> if (ret)
>> @@ -3062,16 +3065,30 @@ static ssize_t
>> psp_usbc_pd_fw_sysfs_write(struct device *dev,
>> rel_buf:
>> dma_free_coherent(adev->dev, usbc_pd_fw->size, cpu_addr, dma_addr);
>> release_firmware(usbc_pd_fw);
>> -
>> fail:
>> if (ret) {
>> DRM_ERROR("Failed to load USBC PD FW, err = %d", ret);
>> - return ret;
>> + count = ret;
>> }
>> + drm_dev_exit(idx);
>> return count;
>> }
>> +void psp_copy_fw(struct psp_context *psp, uint8_t *start_addr,
>> uint32_t bin_size)
>> +{
>> + int idx;
>> +
>> + if (!drm_dev_enter(&psp->adev->ddev, &idx))
>> + return;
>> +
>> + memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> + memcpy(psp->fw_pri_buf, start_addr, bin_size);
>> +
>> + drm_dev_exit(idx);
>> +}
>> +
>> +
>> static DEVICE_ATTR(usbc_pd_fw, S_IRUGO | S_IWUSR,
>> psp_usbc_pd_fw_sysfs_read,
>> psp_usbc_pd_fw_sysfs_write);
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h
>> index 46a5328e00e0..2bfdc278817f 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h
>> @@ -423,4 +423,6 @@ int psp_get_fw_attestation_records_addr(struct
>> psp_context *psp,
>> int psp_load_fw_list(struct psp_context *psp,
>> struct amdgpu_firmware_info **ucode_list, int
>> ucode_count);
>> +void psp_copy_fw(struct psp_context *psp, uint8_t *start_addr,
>> uint32_t bin_size);
>> +
>> #endif
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
>> index 688624ebe421..e1985bc34436 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
>> @@ -35,6 +35,8 @@
>> #include "amdgpu.h"
>> #include "atom.h"
>> +#include <drm/drm_drv.h>
>> +
>> /*
>> * Rings
>> * Most engines on the GPU are fed via ring buffers. Ring
>> @@ -461,3 +463,71 @@ int amdgpu_ring_test_helper(struct amdgpu_ring
>> *ring)
>> ring->sched.ready = !r;
>> return r;
>> }
>> +
>> +void amdgpu_ring_clear_ring(struct amdgpu_ring *ring)
>> +{
>> + int idx;
>> + int i = 0;
>> +
>> + if (!drm_dev_enter(&ring->adev->ddev, &idx))
>> + return;
>> +
>> + while (i <= ring->buf_mask)
>> + ring->ring[i++] = ring->funcs->nop;
>> +
>> + drm_dev_exit(idx);
>> +
>> +}
>> +
>> +void amdgpu_ring_write(struct amdgpu_ring *ring, uint32_t v)
>> +{
>> + int idx;
>> +
>> + if (!drm_dev_enter(&ring->adev->ddev, &idx))
>> + return;
>> +
>> + if (ring->count_dw <= 0)
>> + DRM_ERROR("amdgpu: writing more dwords to the ring than
>> expected!\n");
>> + ring->ring[ring->wptr++ & ring->buf_mask] = v;
>> + ring->wptr &= ring->ptr_mask;
>> + ring->count_dw--;
>> +
>> + drm_dev_exit(idx);
>> +}
>> +
>> +void amdgpu_ring_write_multiple(struct amdgpu_ring *ring,
>> + void *src, int count_dw)
>> +{
>> + unsigned occupied, chunk1, chunk2;
>> + void *dst;
>> + int idx;
>> +
>> + if (!drm_dev_enter(&ring->adev->ddev, &idx))
>> + return;
>> +
>> + if (unlikely(ring->count_dw < count_dw))
>> + DRM_ERROR("amdgpu: writing more dwords to the ring than
>> expected!\n");
>> +
>> + occupied = ring->wptr & ring->buf_mask;
>> + dst = (void *)&ring->ring[occupied];
>> + chunk1 = ring->buf_mask + 1 - occupied;
>> + chunk1 = (chunk1 >= count_dw) ? count_dw: chunk1;
>> + chunk2 = count_dw - chunk1;
>> + chunk1 <<= 2;
>> + chunk2 <<= 2;
>> +
>> + if (chunk1)
>> + memcpy(dst, src, chunk1);
>> +
>> + if (chunk2) {
>> + src += chunk1;
>> + dst = (void *)ring->ring;
>> + memcpy(dst, src, chunk2);
>> + }
>> +
>> + ring->wptr += count_dw;
>> + ring->wptr &= ring->ptr_mask;
>> + ring->count_dw -= count_dw;
>> +
>> + drm_dev_exit(idx);
>> +}
>
> The ring should never we in MMIO memory, so you can completely drop that
> as far as I can see.
Yea, it's in all in GART, missed it for some reason...
>
> Maybe split that patch by use case so that we can more easily review/ack
> it.
In fact everything here is the same use case, once I added unmap of
all MMIO ranges (both registers ann VRAM) i got a lot of page faults
on device remove around any memcpy to from IO. That where I put the
drn_dev_enter/exit scope. Also I searched in code and preemeptivly
added guards to any other such place. I did drop amdgpu_schedule_ib
from this patch both because it had dma_fence_wait inside and so we
will take care of this once we decide on how to handle dma_fence waits.
Andrey
>
> Thanks,
> Christian.
>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
>> index e7d3d0dbdd96..c67bc6d3d039 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
>> @@ -299,53 +299,12 @@ static inline void
>> amdgpu_ring_set_preempt_cond_exec(struct amdgpu_ring *ring,
>> *ring->cond_exe_cpu_addr = cond_exec;
>> }
>> -static inline void amdgpu_ring_clear_ring(struct amdgpu_ring *ring)
>> -{
>> - int i = 0;
>> - while (i <= ring->buf_mask)
>> - ring->ring[i++] = ring->funcs->nop;
>> -
>> -}
>> -
>> -static inline void amdgpu_ring_write(struct amdgpu_ring *ring,
>> uint32_t v)
>> -{
>> - if (ring->count_dw <= 0)
>> - DRM_ERROR("amdgpu: writing more dwords to the ring than
>> expected!\n");
>> - ring->ring[ring->wptr++ & ring->buf_mask] = v;
>> - ring->wptr &= ring->ptr_mask;
>> - ring->count_dw--;
>> -}
>> +void amdgpu_ring_clear_ring(struct amdgpu_ring *ring);
>> -static inline void amdgpu_ring_write_multiple(struct amdgpu_ring *ring,
>> - void *src, int count_dw)
>> -{
>> - unsigned occupied, chunk1, chunk2;
>> - void *dst;
>> -
>> - if (unlikely(ring->count_dw < count_dw))
>> - DRM_ERROR("amdgpu: writing more dwords to the ring than
>> expected!\n");
>> -
>> - occupied = ring->wptr & ring->buf_mask;
>> - dst = (void *)&ring->ring[occupied];
>> - chunk1 = ring->buf_mask + 1 - occupied;
>> - chunk1 = (chunk1 >= count_dw) ? count_dw: chunk1;
>> - chunk2 = count_dw - chunk1;
>> - chunk1 <<= 2;
>> - chunk2 <<= 2;
>> +void amdgpu_ring_write(struct amdgpu_ring *ring, uint32_t v);
>> - if (chunk1)
>> - memcpy(dst, src, chunk1);
>> -
>> - if (chunk2) {
>> - src += chunk1;
>> - dst = (void *)ring->ring;
>> - memcpy(dst, src, chunk2);
>> - }
>> -
>> - ring->wptr += count_dw;
>> - ring->wptr &= ring->ptr_mask;
>> - ring->count_dw -= count_dw;
>> -}
>> +void amdgpu_ring_write_multiple(struct amdgpu_ring *ring,
>> + void *src, int count_dw);
>> int amdgpu_ring_test_helper(struct amdgpu_ring *ring);
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
>> index c6dbc0801604..82f0542c7792 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
>> @@ -32,6 +32,7 @@
>> #include <linux/module.h>
>> #include <drm/drm.h>
>> +#include <drm/drm_drv.h>
>> #include "amdgpu.h"
>> #include "amdgpu_pm.h"
>> @@ -375,7 +376,7 @@ int amdgpu_uvd_suspend(struct amdgpu_device *adev)
>> {
>> unsigned size;
>> void *ptr;
>> - int i, j;
>> + int i, j, idx;
>> bool in_ras_intr = amdgpu_ras_intr_triggered();
>> cancel_delayed_work_sync(&adev->uvd.idle_work);
>> @@ -403,11 +404,15 @@ int amdgpu_uvd_suspend(struct amdgpu_device *adev)
>> if (!adev->uvd.inst[j].saved_bo)
>> return -ENOMEM;
>> - /* re-write 0 since err_event_athub will corrupt VCPU buffer */
>> - if (in_ras_intr)
>> - memset(adev->uvd.inst[j].saved_bo, 0, size);
>> - else
>> - memcpy_fromio(adev->uvd.inst[j].saved_bo, ptr, size);
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + /* re-write 0 since err_event_athub will corrupt VCPU
>> buffer */
>> + if (in_ras_intr)
>> + memset(adev->uvd.inst[j].saved_bo, 0, size);
>> + else
>> + memcpy_fromio(adev->uvd.inst[j].saved_bo, ptr, size);
>> +
>> + drm_dev_exit(idx);
>> + }
>> }
>> if (in_ras_intr)
>> @@ -420,7 +425,7 @@ int amdgpu_uvd_resume(struct amdgpu_device *adev)
>> {
>> unsigned size;
>> void *ptr;
>> - int i;
>> + int i, idx;
>> for (i = 0; i < adev->uvd.num_uvd_inst; i++) {
>> if (adev->uvd.harvest_config & (1 << i))
>> @@ -432,7 +437,10 @@ int amdgpu_uvd_resume(struct amdgpu_device *adev)
>> ptr = adev->uvd.inst[i].cpu_addr;
>> if (adev->uvd.inst[i].saved_bo != NULL) {
>> - memcpy_toio(ptr, adev->uvd.inst[i].saved_bo, size);
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + memcpy_toio(ptr, adev->uvd.inst[i].saved_bo, size);
>> + drm_dev_exit(idx);
>> + }
>> kvfree(adev->uvd.inst[i].saved_bo);
>> adev->uvd.inst[i].saved_bo = NULL;
>> } else {
>> @@ -442,8 +450,11 @@ int amdgpu_uvd_resume(struct amdgpu_device *adev)
>> hdr = (const struct common_firmware_header
>> *)adev->uvd.fw->data;
>> if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP) {
>> offset = le32_to_cpu(hdr->ucode_array_offset_bytes);
>> - memcpy_toio(adev->uvd.inst[i].cpu_addr,
>> adev->uvd.fw->data + offset,
>> - le32_to_cpu(hdr->ucode_size_bytes));
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + memcpy_toio(adev->uvd.inst[i].cpu_addr,
>> adev->uvd.fw->data + offset,
>> + le32_to_cpu(hdr->ucode_size_bytes));
>> + drm_dev_exit(idx);
>> + }
>> size -= le32_to_cpu(hdr->ucode_size_bytes);
>> ptr += le32_to_cpu(hdr->ucode_size_bytes);
>> }
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
>> index ea6a62f67e38..833203401ef4 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
>> @@ -29,6 +29,7 @@
>> #include <linux/module.h>
>> #include <drm/drm.h>
>> +#include <drm/drm_drv.h>
>> #include "amdgpu.h"
>> #include "amdgpu_pm.h"
>> @@ -293,7 +294,7 @@ int amdgpu_vce_resume(struct amdgpu_device *adev)
>> void *cpu_addr;
>> const struct common_firmware_header *hdr;
>> unsigned offset;
>> - int r;
>> + int r, idx;
>> if (adev->vce.vcpu_bo == NULL)
>> return -EINVAL;
>> @@ -313,8 +314,12 @@ int amdgpu_vce_resume(struct amdgpu_device *adev)
>> hdr = (const struct common_firmware_header *)adev->vce.fw->data;
>> offset = le32_to_cpu(hdr->ucode_array_offset_bytes);
>> - memcpy_toio(cpu_addr, adev->vce.fw->data + offset,
>> - adev->vce.fw->size - offset);
>> +
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + memcpy_toio(cpu_addr, adev->vce.fw->data + offset,
>> + adev->vce.fw->size - offset);
>> + drm_dev_exit(idx);
>> + }
>> amdgpu_bo_kunmap(adev->vce.vcpu_bo);
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
>> index 201645963ba5..21f7d3644d70 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
>> @@ -27,6 +27,7 @@
>> #include <linux/firmware.h>
>> #include <linux/module.h>
>> #include <linux/pci.h>
>> +#include <drm/drm_drv.h>
>> #include "amdgpu.h"
>> #include "amdgpu_pm.h"
>> @@ -275,7 +276,7 @@ int amdgpu_vcn_suspend(struct amdgpu_device *adev)
>> {
>> unsigned size;
>> void *ptr;
>> - int i;
>> + int i, idx;
>> cancel_delayed_work_sync(&adev->vcn.idle_work);
>> @@ -292,7 +293,10 @@ int amdgpu_vcn_suspend(struct amdgpu_device *adev)
>> if (!adev->vcn.inst[i].saved_bo)
>> return -ENOMEM;
>> - memcpy_fromio(adev->vcn.inst[i].saved_bo, ptr, size);
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + memcpy_fromio(adev->vcn.inst[i].saved_bo, ptr, size);
>> + drm_dev_exit(idx);
>> + }
>> }
>> return 0;
>> }
>> @@ -301,7 +305,7 @@ int amdgpu_vcn_resume(struct amdgpu_device *adev)
>> {
>> unsigned size;
>> void *ptr;
>> - int i;
>> + int i, idx;
>> for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
>> if (adev->vcn.harvest_config & (1 << i))
>> @@ -313,7 +317,10 @@ int amdgpu_vcn_resume(struct amdgpu_device *adev)
>> ptr = adev->vcn.inst[i].cpu_addr;
>> if (adev->vcn.inst[i].saved_bo != NULL) {
>> - memcpy_toio(ptr, adev->vcn.inst[i].saved_bo, size);
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + memcpy_toio(ptr, adev->vcn.inst[i].saved_bo, size);
>> + drm_dev_exit(idx);
>> + }
>> kvfree(adev->vcn.inst[i].saved_bo);
>> adev->vcn.inst[i].saved_bo = NULL;
>> } else {
>> @@ -323,8 +330,11 @@ int amdgpu_vcn_resume(struct amdgpu_device *adev)
>> hdr = (const struct common_firmware_header
>> *)adev->vcn.fw->data;
>> if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP) {
>> offset = le32_to_cpu(hdr->ucode_array_offset_bytes);
>> - memcpy_toio(adev->vcn.inst[i].cpu_addr,
>> adev->vcn.fw->data + offset,
>> - le32_to_cpu(hdr->ucode_size_bytes));
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + memcpy_toio(adev->vcn.inst[i].cpu_addr,
>> adev->vcn.fw->data + offset,
>> + le32_to_cpu(hdr->ucode_size_bytes));
>> + drm_dev_exit(idx);
>> + }
>> size -= le32_to_cpu(hdr->ucode_size_bytes);
>> ptr += le32_to_cpu(hdr->ucode_size_bytes);
>> }
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>> index 9f868cf3b832..7dd5f10ab570 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>> @@ -32,6 +32,7 @@
>> #include <linux/dma-buf.h>
>> #include <drm/amdgpu_drm.h>
>> +#include <drm/drm_drv.h>
>> #include "amdgpu.h"
>> #include "amdgpu_trace.h"
>> #include "amdgpu_amdkfd.h"
>> @@ -1606,7 +1607,10 @@ static int amdgpu_vm_bo_update_mapping(struct
>> amdgpu_device *adev,
>> struct amdgpu_vm_update_params params;
>> enum amdgpu_sync_mode sync_mode;
>> uint64_t pfn;
>> - int r;
>> + int r, idx;
>> +
>> + if (!drm_dev_enter(&adev->ddev, &idx))
>> + return -ENODEV;
>> memset(¶ms, 0, sizeof(params));
>> params.adev = adev;
>> @@ -1715,6 +1719,7 @@ static int amdgpu_vm_bo_update_mapping(struct
>> amdgpu_device *adev,
>> error_unlock:
>> amdgpu_vm_eviction_unlock(vm);
>> + drm_dev_exit(idx);
>> return r;
>> }
>> diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v11_0.c
>> b/drivers/gpu/drm/amd/amdgpu/psp_v11_0.c
>> index 589410c32d09..2cec71e823f5 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/psp_v11_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/psp_v11_0.c
>> @@ -23,6 +23,7 @@
>> #include <linux/firmware.h>
>> #include <linux/module.h>
>> #include <linux/vmalloc.h>
>> +#include <drm/drm_drv.h>
>> #include "amdgpu.h"
>> #include "amdgpu_psp.h"
>> @@ -269,10 +270,8 @@ static int psp_v11_0_bootloader_load_kdb(struct
>> psp_context *psp)
>> if (ret)
>> return ret;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> -
>> /* Copy PSP KDB binary to memory */
>> - memcpy(psp->fw_pri_buf, psp->kdb_start_addr, psp->kdb_bin_size);
>> + psp_copy_fw(psp, psp->kdb_start_addr, psp->kdb_bin_size);
>> /* Provide the PSP KDB to bootloader */
>> WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36,
>> @@ -302,10 +301,8 @@ static int psp_v11_0_bootloader_load_spl(struct
>> psp_context *psp)
>> if (ret)
>> return ret;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> -
>> /* Copy PSP SPL binary to memory */
>> - memcpy(psp->fw_pri_buf, psp->spl_start_addr, psp->spl_bin_size);
>> + psp_copy_fw(psp, psp->spl_start_addr, psp->spl_bin_size);
>> /* Provide the PSP SPL to bootloader */
>> WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36,
>> @@ -335,10 +332,8 @@ static int
>> psp_v11_0_bootloader_load_sysdrv(struct psp_context *psp)
>> if (ret)
>> return ret;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> -
>> /* Copy PSP System Driver binary to memory */
>> - memcpy(psp->fw_pri_buf, psp->sys_start_addr, psp->sys_bin_size);
>> + psp_copy_fw(psp, psp->sys_start_addr, psp->sys_bin_size);
>> /* Provide the sys driver to bootloader */
>> WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36,
>> @@ -371,10 +366,8 @@ static int psp_v11_0_bootloader_load_sos(struct
>> psp_context *psp)
>> if (ret)
>> return ret;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> -
>> /* Copy Secure OS binary to PSP memory */
>> - memcpy(psp->fw_pri_buf, psp->sos_start_addr, psp->sos_bin_size);
>> + psp_copy_fw(psp, psp->sos_start_addr, psp->sos_bin_size);
>> /* Provide the PSP secure OS to bootloader */
>> WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36,
>> @@ -608,7 +601,7 @@ static int psp_v11_0_memory_training(struct
>> psp_context *psp, uint32_t ops)
>> uint32_t p2c_header[4];
>> uint32_t sz;
>> void *buf;
>> - int ret;
>> + int ret, idx;
>> if (ctx->init == PSP_MEM_TRAIN_NOT_SUPPORT) {
>> DRM_DEBUG("Memory training is not supported.\n");
>> @@ -681,17 +674,24 @@ static int psp_v11_0_memory_training(struct
>> psp_context *psp, uint32_t ops)
>> return -ENOMEM;
>> }
>> - memcpy_fromio(buf, adev->mman.aper_base_kaddr, sz);
>> - ret = psp_v11_0_memory_training_send_msg(psp,
>> PSP_BL__DRAM_LONG_TRAIN);
>> - if (ret) {
>> - DRM_ERROR("Send long training msg failed.\n");
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + memcpy_fromio(buf, adev->mman.aper_base_kaddr, sz);
>> + ret = psp_v11_0_memory_training_send_msg(psp,
>> PSP_BL__DRAM_LONG_TRAIN);
>> + if (ret) {
>> + DRM_ERROR("Send long training msg failed.\n");
>> + vfree(buf);
>> + drm_dev_exit(idx);
>> + return ret;
>> + }
>> +
>> + memcpy_toio(adev->mman.aper_base_kaddr, buf, sz);
>> + adev->hdp.funcs->flush_hdp(adev, NULL);
>> vfree(buf);
>> - return ret;
>> + drm_dev_exit(idx);
>> + } else {
>> + vfree(buf);
>> + return -ENODEV;
>> }
>> -
>> - memcpy_toio(adev->mman.aper_base_kaddr, buf, sz);
>> - adev->hdp.funcs->flush_hdp(adev, NULL);
>> - vfree(buf);
>> }
>> if (ops & PSP_MEM_TRAIN_SAVE) {
>> diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c
>> b/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c
>> index c4828bd3264b..618e5b6b85d9 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c
>> @@ -138,10 +138,8 @@ static int
>> psp_v12_0_bootloader_load_sysdrv(struct psp_context *psp)
>> if (ret)
>> return ret;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> -
>> /* Copy PSP System Driver binary to memory */
>> - memcpy(psp->fw_pri_buf, psp->sys_start_addr, psp->sys_bin_size);
>> + psp_copy_fw(psp, psp->sys_start_addr, psp->sys_bin_size);
>> /* Provide the sys driver to bootloader */
>> WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36,
>> @@ -179,10 +177,8 @@ static int psp_v12_0_bootloader_load_sos(struct
>> psp_context *psp)
>> if (ret)
>> return ret;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> -
>> /* Copy Secure OS binary to PSP memory */
>> - memcpy(psp->fw_pri_buf, psp->sos_start_addr, psp->sos_bin_size);
>> + psp_copy_fw(psp, psp->sos_start_addr, psp->sos_bin_size);
>> /* Provide the PSP secure OS to bootloader */
>> WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36,
>> diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
>> b/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
>> index f2e725f72d2f..d0a6cccd0897 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
>> @@ -102,10 +102,8 @@ static int psp_v3_1_bootloader_load_sysdrv(struct
>> psp_context *psp)
>> if (ret)
>> return ret;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> -
>> /* Copy PSP System Driver binary to memory */
>> - memcpy(psp->fw_pri_buf, psp->sys_start_addr, psp->sys_bin_size);
>> + psp_copy_fw(psp, psp->sys_start_addr, psp->sys_bin_size);
>> /* Provide the sys driver to bootloader */
>> WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36,
>> @@ -143,10 +141,8 @@ static int psp_v3_1_bootloader_load_sos(struct
>> psp_context *psp)
>> if (ret)
>> return ret;
>> - memset(psp->fw_pri_buf, 0, PSP_1_MEG);
>> -
>> /* Copy Secure OS binary to PSP memory */
>> - memcpy(psp->fw_pri_buf, psp->sos_start_addr, psp->sos_bin_size);
>> + psp_copy_fw(psp, psp->sos_start_addr, psp->sos_bin_size);
>> /* Provide the PSP secure OS to bootloader */
>> WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36,
>> diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v4_0.c
>> b/drivers/gpu/drm/amd/amdgpu/vce_v4_0.c
>> index 8e238dea7bef..90910d19db12 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/vce_v4_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/vce_v4_0.c
>> @@ -25,6 +25,7 @@
>> */
>> #include <linux/firmware.h>
>> +#include <drm/drm_drv.h>
>> #include "amdgpu.h"
>> #include "amdgpu_vce.h"
>> @@ -555,16 +556,19 @@ static int vce_v4_0_hw_fini(void *handle)
>> static int vce_v4_0_suspend(void *handle)
>> {
>> struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>> - int r;
>> + int r, idx;
>> if (adev->vce.vcpu_bo == NULL)
>> return 0;
>> - if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
>> - unsigned size = amdgpu_bo_size(adev->vce.vcpu_bo);
>> - void *ptr = adev->vce.cpu_addr;
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
>> + unsigned size = amdgpu_bo_size(adev->vce.vcpu_bo);
>> + void *ptr = adev->vce.cpu_addr;
>> - memcpy_fromio(adev->vce.saved_bo, ptr, size);
>> + memcpy_fromio(adev->vce.saved_bo, ptr, size);
>> + }
>> + drm_dev_exit(idx);
>> }
>> r = vce_v4_0_hw_fini(adev);
>> @@ -577,16 +581,20 @@ static int vce_v4_0_suspend(void *handle)
>> static int vce_v4_0_resume(void *handle)
>> {
>> struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>> - int r;
>> + int r, idx;
>> if (adev->vce.vcpu_bo == NULL)
>> return -EINVAL;
>> if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
>> - unsigned size = amdgpu_bo_size(adev->vce.vcpu_bo);
>> - void *ptr = adev->vce.cpu_addr;
>> - memcpy_toio(ptr, adev->vce.saved_bo, size);
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + unsigned size = amdgpu_bo_size(adev->vce.vcpu_bo);
>> + void *ptr = adev->vce.cpu_addr;
>> +
>> + memcpy_toio(ptr, adev->vce.saved_bo, size);
>> + drm_dev_exit(idx);
>> + }
>> } else {
>> r = amdgpu_vce_resume(adev);
>> if (r)
>> diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c
>> b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c
>> index 3f15bf34123a..df34be8ec82d 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c
>> @@ -34,6 +34,8 @@
>> #include "vcn/vcn_3_0_0_sh_mask.h"
>> #include "ivsrcid/vcn/irqsrcs_vcn_2_0.h"
>> +#include <drm/drm_drv.h>
>> +
>> #define mmUVD_CONTEXT_ID_INTERNAL_OFFSET 0x27
>> #define mmUVD_GPCOM_VCPU_CMD_INTERNAL_OFFSET 0x0f
>> #define mmUVD_GPCOM_VCPU_DATA0_INTERNAL_OFFSET 0x10
>> @@ -268,16 +270,20 @@ static int vcn_v3_0_sw_init(void *handle)
>> static int vcn_v3_0_sw_fini(void *handle)
>> {
>> struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>> - int i, r;
>> + int i, r, idx;
>> - for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
>> - volatile struct amdgpu_fw_shared *fw_shared;
>> + if (drm_dev_enter(&adev->ddev, &idx)) {
>> + for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
>> + volatile struct amdgpu_fw_shared *fw_shared;
>> - if (adev->vcn.harvest_config & (1 << i))
>> - continue;
>> - fw_shared = adev->vcn.inst[i].fw_shared_cpu_addr;
>> - fw_shared->present_flag_0 = 0;
>> - fw_shared->sw_ring.is_enabled = false;
>> + if (adev->vcn.harvest_config & (1 << i))
>> + continue;
>> + fw_shared = adev->vcn.inst[i].fw_shared_cpu_addr;
>> + fw_shared->present_flag_0 = 0;
>> + fw_shared->sw_ring.is_enabled = false;
>> + }
>> +
>> + drm_dev_exit(idx);
>> }
>> if (amdgpu_sriov_vf(adev))
>> diff --git a/drivers/gpu/drm/amd/pm/powerplay/smumgr/smu7_smumgr.c
>> b/drivers/gpu/drm/amd/pm/powerplay/smumgr/smu7_smumgr.c
>> index aae25243eb10..d628b91846c9 100644
>> --- a/drivers/gpu/drm/amd/pm/powerplay/smumgr/smu7_smumgr.c
>> +++ b/drivers/gpu/drm/amd/pm/powerplay/smumgr/smu7_smumgr.c
>> @@ -405,6 +405,8 @@ int smu7_request_smu_load_fw(struct pp_hwmgr *hwmgr)
>> UCODE_ID_MEC_STORAGE, &toc->entry[toc->num_entries++]),
>> "Failed to Get Firmware Entry.", r = -EINVAL; goto
>> failed);
>> }
>> +
>> + /* AG TODO Can't call drm_dev_enter/exit because access
>> adev->ddev here ... */
>> memcpy_toio(smu_data->header_buffer.kaddr, smu_data->toc,
>> sizeof(struct SMU_DRAMData_TOC));
>> smum_send_msg_to_smc_with_parameter(hwmgr,
>
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