search for: drm_gpuva_op

...perations and a single + * map operation. The caller might receive no callback at all if no operation is + * required, e.g. if the requested mapping already exists in the exact same way. + * + * The single map operation represents the original map operation requested by + * the caller. + * + * &drm_gpuva_op_unmap contains a 'keep' field, which indicates whether the + * &drm_gpuva to unmap is physically contiguous with the original mapping + * request. Optionally, if 'keep' is set, drivers may keep the actual page table + * entries for this &drm_gpuva, adding the missing page ta...

...perations and a single + * map operation. The caller might receive no callback at all if no operation is + * required, e.g. if the requested mapping already exists in the exact same way. + * + * The single map operation represents the original map operation requested by + * the caller. + * + * &drm_gpuva_op_unmap contains a 'keep' field, which indicates whether the + * &drm_gpuva to unmap is physically contiguous with the original mapping + * request. Optionally, if 'keep' is set, drivers may keep the actual page table + * entries for this &drm_gpuva, adding the missing page ta...

...perations and a single + * map operation. The caller might receive no callback at all if no operation is + * required, e.g. if the requested mapping already exists in the exact same way. + * + * The single map operation represents the original map operation requested by + * the caller. + * + * &drm_gpuva_op_unmap contains a 'keep' field, which indicates whether the + * &drm_gpuva to unmap is physically contiguous with the original mapping + * request. Optionally, if 'keep' is set, drivers may keep the actual page table + * entries for this &drm_gpuva, adding the missing page ta...

So far the DRM GPUVA manager offers common infrastructure to track GPU VA allocations and mappings, generically connect GPU VA mappings to their backing buffers and perform more complex mapping operations on the GPU VA space. However, there are more design patterns commonly used by drivers, which can potentially be generalized in order to make the DRM GPUVA manager represent a basic GPU-VM

...s to drivers. */ struct drm_gpuvm_ops { + /** + * @vm_free: called when the last reference of a struct drm_gpuvm is + * dropped + * + * This callback is mandatory. + */ + void (*vm_free)(struct drm_gpuvm *gpuvm); + /** * @op_alloc: called when the &drm_gpuvm allocates * a struct drm_gpuva_op -- 2.41.0

Hi Boris, On 6/30/23 10:02, Boris Brezillon wrote: > Hi Danilo, > > On Fri, 30 Jun 2023 00:25:18 +0200 > Danilo Krummrich <dakr at redhat.com> wrote: > >> + * int driver_gpuva_remap(struct drm_gpuva_op *op, void *__ctx) >> + * { >> + * struct driver_context *ctx = __ctx; >> + * >> + * drm_gpuva_remap(ctx->prev_va, ctx->next_va, &op->remap); >> + * >> + * drm_gpuva_unlink(op->remap.unmap->va); >> + * kfree(op->remap.unmap->va);...

...n range is the size of the newly requested mapping. __drm_gpuva_sm_map() >>>>>> invokes a callback for each sub-operation that needs to be taken in order to >>>>>> fulfill this mapping request. In most cases such a callback just creates a >>>>>> drm_gpuva_op object and stores it in a list. >>>>>> >>>>>> However, drivers can also implement the callback, such that they directly >>>>>> execute this operation within the callback. >>>>>> >>>>>> Let's have a look at...

...he >>>> given range is the size of the newly requested mapping. __drm_gpuva_sm_map() >>>> invokes a callback for each sub-operation that needs to be taken in order to >>>> fulfill this mapping request. In most cases such a callback just creates a >>>> drm_gpuva_op object and stores it in a list. >>>> >>>> However, drivers can also implement the callback, such that they directly >>>> execute this operation within the callback. >>>> >>>> Let's have a look at the following example: >>>>...

...given range of the tree, where the >> given range is the size of the newly requested mapping. __drm_gpuva_sm_map() >> invokes a callback for each sub-operation that needs to be taken in order to >> fulfill this mapping request. In most cases such a callback just creates a >> drm_gpuva_op object and stores it in a list. >> >> However, drivers can also implement the callback, such that they directly >> execute this operation within the callback. >> >> Let's have a look at the following example: >> >> 0 a 2 >> old: |---...

Hi, On 8/31/23 13:18, Danilo Krummrich wrote: > On Thu, Aug 31, 2023 at 11:04:06AM +0200, Thomas Hellstr?m (Intel) wrote: >> Hi! >> >> On 8/30/23 17:00, Danilo Krummrich wrote: >>> On Wed, Aug 30, 2023 at 03:42:08PM +0200, Thomas Hellstr?m (Intel) wrote: >>>> On 8/30/23 14:49, Danilo Krummrich wrote: >>>>> Hi Thomas, >>>>>