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gpu: nvgpu: update device management framework to remove unusable engines

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On certain platforms, not all copy engine instances are usable. The user
shouldn't submit any work to these engines. To enforce this, remove
these engines from active/host_engine list, this should ensure that these
engines do not get advertised to userspace. In order to accomplish this
introduce the following functions:
- nvgpu_engine_remove_one_dev: This function removes the specified device
  entry from following device lists: fifo->host_engines, fifo->active_engines,
  runlist->rl_dev_list, runlist->eng_bitmask.

Replace iteration over LCE device type entries using
nvgpu_device_for_each(g, dev, NVGPU_DEVTYPE_LCE), along with this introduce
macro nvgpu_device_for_each_safe.

Introduce gpu_dbg_ce flag for CE debugging.

Bug 3370462

Change-Id: I2e21f18363c6e53630d129da241c8fece106cd33
Signed-off-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2616711
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Antony Clince Alex
2021-10-26 10:09:20 +00:00
committed by mobile promotions
parent 79ee724b04
commit cce1d7ad84
7 changed files with 82 additions and 32 deletions
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12
drivers/gpu/nvgpu/include/nvgpu/engines.h
View File

@@ -410,4 +410,16 @@ u32 nvgpu_engine_mmu_fault_id_to_veid(struct gk20a *g, u32 mmu_fault_id,
*/
void nvgpu_engine_mmu_fault_id_to_eng_ve_pbdma_id(struct gk20a *g,
u32 mmu_fault_id, u32 *engine_id, u32 *veid, u32 *pbdma_id);
/**
* @brief Remove a device entry from engine list.
*
* @param g [in] The GPU driver struct.
* @param dev [in] A device.
*
* Remove the device entry \a dev from fifo->host_engines, fifo->active_engines.
* The device entry is retained in g->devs->devlist_heads list to ensure device
* reset.
*/
void nvgpu_engine_remove_one_dev(struct nvgpu_fifo *f,
const struct nvgpu_device *dev);
#endif /*NVGPU_ENGINE_H*/

1
drivers/gpu/nvgpu/include/nvgpu/log_common.h
View File

@@ -81,5 +81,6 @@ enum nvgpu_log_type {
#define gpu_dbg_mm BIT(41) /* Memory management debugging. */
#define gpu_dbg_hwpm BIT(42) /* GPU HWPM. */
#define gpu_dbg_verbose BIT(43) /* More verbose logs. */
#define gpu_dbg_ce BIT(44) /* Copy Engine debugging */
#endif