Move both into the new files amdgpu_ids.[ch]. No functional change.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
amdgpu_prime.o amdgpu_vm.o amdgpu_ib.o amdgpu_pll.o \
amdgpu_ucode.o amdgpu_bo_list.o amdgpu_ctx.o amdgpu_sync.o \
amdgpu_gtt_mgr.o amdgpu_vram_mgr.o amdgpu_virt.o amdgpu_atomfirmware.o \
- amdgpu_queue_mgr.o amdgpu_vf_error.o amdgpu_sched.o amdgpu_debugfs.o
+ amdgpu_queue_mgr.o amdgpu_vf_error.o amdgpu_sched.o amdgpu_debugfs.o \
+ amdgpu_ids.o
# add asic specific block
amdgpu-$(CONFIG_DRM_AMDGPU_CIK)+= cik.o cik_ih.o kv_smc.o kv_dpm.o \
.get_vmem_size = get_vmem_size,
.get_gpu_clock_counter = get_gpu_clock_counter,
.get_max_engine_clock_in_mhz = get_max_engine_clock_in_mhz,
- .alloc_pasid = amdgpu_vm_alloc_pasid,
- .free_pasid = amdgpu_vm_free_pasid,
+ .alloc_pasid = amdgpu_pasid_alloc,
+ .free_pasid = amdgpu_pasid_free,
.program_sh_mem_settings = kgd_program_sh_mem_settings,
.set_pasid_vmid_mapping = kgd_set_pasid_vmid_mapping,
.init_pipeline = kgd_init_pipeline,
.get_vmem_size = get_vmem_size,
.get_gpu_clock_counter = get_gpu_clock_counter,
.get_max_engine_clock_in_mhz = get_max_engine_clock_in_mhz,
- .alloc_pasid = amdgpu_vm_alloc_pasid,
- .free_pasid = amdgpu_vm_free_pasid,
+ .alloc_pasid = amdgpu_pasid_alloc,
+ .free_pasid = amdgpu_pasid_free,
.program_sh_mem_settings = kgd_program_sh_mem_settings,
.set_pasid_vmid_mapping = kgd_set_pasid_vmid_mapping,
.init_pipeline = kgd_init_pipeline,
if (r) {
dev_err(adev->dev, "failed to emit fence (%d)\n", r);
if (job && job->vm_id)
- amdgpu_vm_reset_id(adev, ring->funcs->vmhub,
- job->vm_id);
+ amdgpu_vmid_reset(adev, ring->funcs->vmhub, job->vm_id);
amdgpu_ring_undo(ring);
return r;
}
--- /dev/null
+/*
+ * Copyright 2017 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#include "amdgpu_ids.h"
+
+#include <linux/idr.h>
+#include <linux/dma-fence-array.h>
+#include <drm/drmP.h>
+
+#include "amdgpu.h"
+#include "amdgpu_trace.h"
+
+/*
+ * PASID manager
+ *
+ * PASIDs are global address space identifiers that can be shared
+ * between the GPU, an IOMMU and the driver. VMs on different devices
+ * may use the same PASID if they share the same address
+ * space. Therefore PASIDs are allocated using a global IDA. VMs are
+ * looked up from the PASID per amdgpu_device.
+ */
+static DEFINE_IDA(amdgpu_pasid_ida);
+
+/**
+ * amdgpu_pasid_alloc - Allocate a PASID
+ * @bits: Maximum width of the PASID in bits, must be at least 1
+ *
+ * Allocates a PASID of the given width while keeping smaller PASIDs
+ * available if possible.
+ *
+ * Returns a positive integer on success. Returns %-EINVAL if bits==0.
+ * Returns %-ENOSPC if no PASID was available. Returns %-ENOMEM on
+ * memory allocation failure.
+ */
+int amdgpu_pasid_alloc(unsigned int bits)
+{
+ int pasid = -EINVAL;
+
+ for (bits = min(bits, 31U); bits > 0; bits--) {
+ pasid = ida_simple_get(&amdgpu_pasid_ida,
+ 1U << (bits - 1), 1U << bits,
+ GFP_KERNEL);
+ if (pasid != -ENOSPC)
+ break;
+ }
+
+ return pasid;
+}
+
+/**
+ * amdgpu_pasid_free - Free a PASID
+ * @pasid: PASID to free
+ */
+void amdgpu_pasid_free(unsigned int pasid)
+{
+ ida_simple_remove(&amdgpu_pasid_ida, pasid);
+}
+
+/*
+ * VMID manager
+ *
+ * VMIDs are a per VMHUB identifier for page tables handling.
+ */
+
+/**
+ * amdgpu_vmid_had_gpu_reset - check if reset occured since last use
+ *
+ * @adev: amdgpu_device pointer
+ * @id: VMID structure
+ *
+ * Check if GPU reset occured since last use of the VMID.
+ */
+bool amdgpu_vmid_had_gpu_reset(struct amdgpu_device *adev,
+ struct amdgpu_vmid *id)
+{
+ return id->current_gpu_reset_count !=
+ atomic_read(&adev->gpu_reset_counter);
+}
+
+/* idr_mgr->lock must be held */
+static int amdgpu_vmid_grab_reserved_locked(struct amdgpu_vm *vm,
+ struct amdgpu_ring *ring,
+ struct amdgpu_sync *sync,
+ struct dma_fence *fence,
+ struct amdgpu_job *job)
+{
+ struct amdgpu_device *adev = ring->adev;
+ unsigned vmhub = ring->funcs->vmhub;
+ uint64_t fence_context = adev->fence_context + ring->idx;
+ struct amdgpu_vmid *id = vm->reserved_vmid[vmhub];
+ struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub];
+ struct dma_fence *updates = sync->last_vm_update;
+ int r = 0;
+ struct dma_fence *flushed, *tmp;
+ bool needs_flush = vm->use_cpu_for_update;
+
+ flushed = id->flushed_updates;
+ if ((amdgpu_vmid_had_gpu_reset(adev, id)) ||
+ (atomic64_read(&id->owner) != vm->client_id) ||
+ (job->vm_pd_addr != id->pd_gpu_addr) ||
+ (updates && (!flushed || updates->context != flushed->context ||
+ dma_fence_is_later(updates, flushed))) ||
+ (!id->last_flush || (id->last_flush->context != fence_context &&
+ !dma_fence_is_signaled(id->last_flush)))) {
+ needs_flush = true;
+ /* to prevent one context starved by another context */
+ id->pd_gpu_addr = 0;
+ tmp = amdgpu_sync_peek_fence(&id->active, ring);
+ if (tmp) {
+ r = amdgpu_sync_fence(adev, sync, tmp, false);
+ return r;
+ }
+ }
+
+ /* Good we can use this VMID. Remember this submission as
+ * user of the VMID.
+ */
+ r = amdgpu_sync_fence(ring->adev, &id->active, fence, false);
+ if (r)
+ goto out;
+
+ if (updates && (!flushed || updates->context != flushed->context ||
+ dma_fence_is_later(updates, flushed))) {
+ dma_fence_put(id->flushed_updates);
+ id->flushed_updates = dma_fence_get(updates);
+ }
+ id->pd_gpu_addr = job->vm_pd_addr;
+ atomic64_set(&id->owner, vm->client_id);
+ job->vm_needs_flush = needs_flush;
+ if (needs_flush) {
+ dma_fence_put(id->last_flush);
+ id->last_flush = NULL;
+ }
+ job->vm_id = id - id_mgr->ids;
+ trace_amdgpu_vm_grab_id(vm, ring, job);
+out:
+ return r;
+}
+
+/**
+ * amdgpu_vm_grab_id - allocate the next free VMID
+ *
+ * @vm: vm to allocate id for
+ * @ring: ring we want to submit job to
+ * @sync: sync object where we add dependencies
+ * @fence: fence protecting ID from reuse
+ *
+ * Allocate an id for the vm, adding fences to the sync obj as necessary.
+ */
+int amdgpu_vmid_grab(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
+ struct amdgpu_sync *sync, struct dma_fence *fence,
+ struct amdgpu_job *job)
+{
+ struct amdgpu_device *adev = ring->adev;
+ unsigned vmhub = ring->funcs->vmhub;
+ struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub];
+ uint64_t fence_context = adev->fence_context + ring->idx;
+ struct dma_fence *updates = sync->last_vm_update;
+ struct amdgpu_vmid *id, *idle;
+ struct dma_fence **fences;
+ unsigned i;
+ int r = 0;
+
+ mutex_lock(&id_mgr->lock);
+ if (vm->reserved_vmid[vmhub]) {
+ r = amdgpu_vmid_grab_reserved_locked(vm, ring, sync, fence, job);
+ mutex_unlock(&id_mgr->lock);
+ return r;
+ }
+ fences = kmalloc_array(sizeof(void *), id_mgr->num_ids, GFP_KERNEL);
+ if (!fences) {
+ mutex_unlock(&id_mgr->lock);
+ return -ENOMEM;
+ }
+ /* Check if we have an idle VMID */
+ i = 0;
+ list_for_each_entry(idle, &id_mgr->ids_lru, list) {
+ fences[i] = amdgpu_sync_peek_fence(&idle->active, ring);
+ if (!fences[i])
+ break;
+ ++i;
+ }
+
+ /* If we can't find a idle VMID to use, wait till one becomes available */
+ if (&idle->list == &id_mgr->ids_lru) {
+ u64 fence_context = adev->vm_manager.fence_context + ring->idx;
+ unsigned seqno = ++adev->vm_manager.seqno[ring->idx];
+ struct dma_fence_array *array;
+ unsigned j;
+
+ for (j = 0; j < i; ++j)
+ dma_fence_get(fences[j]);
+
+ array = dma_fence_array_create(i, fences, fence_context,
+ seqno, true);
+ if (!array) {
+ for (j = 0; j < i; ++j)
+ dma_fence_put(fences[j]);
+ kfree(fences);
+ r = -ENOMEM;
+ goto error;
+ }
+
+
+ r = amdgpu_sync_fence(ring->adev, sync, &array->base, false);
+ dma_fence_put(&array->base);
+ if (r)
+ goto error;
+
+ mutex_unlock(&id_mgr->lock);
+ return 0;
+
+ }
+ kfree(fences);
+
+ job->vm_needs_flush = vm->use_cpu_for_update;
+ /* Check if we can use a VMID already assigned to this VM */
+ list_for_each_entry_reverse(id, &id_mgr->ids_lru, list) {
+ struct dma_fence *flushed;
+ bool needs_flush = vm->use_cpu_for_update;
+
+ /* Check all the prerequisites to using this VMID */
+ if (amdgpu_vmid_had_gpu_reset(adev, id))
+ continue;
+
+ if (atomic64_read(&id->owner) != vm->client_id)
+ continue;
+
+ if (job->vm_pd_addr != id->pd_gpu_addr)
+ continue;
+
+ if (!id->last_flush ||
+ (id->last_flush->context != fence_context &&
+ !dma_fence_is_signaled(id->last_flush)))
+ needs_flush = true;
+
+ flushed = id->flushed_updates;
+ if (updates && (!flushed || dma_fence_is_later(updates, flushed)))
+ needs_flush = true;
+
+ /* Concurrent flushes are only possible starting with Vega10 */
+ if (adev->asic_type < CHIP_VEGA10 && needs_flush)
+ continue;
+
+ /* Good we can use this VMID. Remember this submission as
+ * user of the VMID.
+ */
+ r = amdgpu_sync_fence(ring->adev, &id->active, fence, false);
+ if (r)
+ goto error;
+
+ if (updates && (!flushed || dma_fence_is_later(updates, flushed))) {
+ dma_fence_put(id->flushed_updates);
+ id->flushed_updates = dma_fence_get(updates);
+ }
+
+ if (needs_flush)
+ goto needs_flush;
+ else
+ goto no_flush_needed;
+
+ };
+
+ /* Still no ID to use? Then use the idle one found earlier */
+ id = idle;
+
+ /* Remember this submission as user of the VMID */
+ r = amdgpu_sync_fence(ring->adev, &id->active, fence, false);
+ if (r)
+ goto error;
+
+ id->pd_gpu_addr = job->vm_pd_addr;
+ dma_fence_put(id->flushed_updates);
+ id->flushed_updates = dma_fence_get(updates);
+ atomic64_set(&id->owner, vm->client_id);
+
+needs_flush:
+ job->vm_needs_flush = true;
+ dma_fence_put(id->last_flush);
+ id->last_flush = NULL;
+
+no_flush_needed:
+ list_move_tail(&id->list, &id_mgr->ids_lru);
+
+ job->vm_id = id - id_mgr->ids;
+ trace_amdgpu_vm_grab_id(vm, ring, job);
+
+error:
+ mutex_unlock(&id_mgr->lock);
+ return r;
+}
+
+int amdgpu_vmid_alloc_reserved(struct amdgpu_device *adev,
+ struct amdgpu_vm *vm,
+ unsigned vmhub)
+{
+ struct amdgpu_vmid_mgr *id_mgr;
+ struct amdgpu_vmid *idle;
+ int r = 0;
+
+ id_mgr = &adev->vm_manager.id_mgr[vmhub];
+ mutex_lock(&id_mgr->lock);
+ if (vm->reserved_vmid[vmhub])
+ goto unlock;
+ if (atomic_inc_return(&id_mgr->reserved_vmid_num) >
+ AMDGPU_VM_MAX_RESERVED_VMID) {
+ DRM_ERROR("Over limitation of reserved vmid\n");
+ atomic_dec(&id_mgr->reserved_vmid_num);
+ r = -EINVAL;
+ goto unlock;
+ }
+ /* Select the first entry VMID */
+ idle = list_first_entry(&id_mgr->ids_lru, struct amdgpu_vmid, list);
+ list_del_init(&idle->list);
+ vm->reserved_vmid[vmhub] = idle;
+ mutex_unlock(&id_mgr->lock);
+
+ return 0;
+unlock:
+ mutex_unlock(&id_mgr->lock);
+ return r;
+}
+
+void amdgpu_vmid_free_reserved(struct amdgpu_device *adev,
+ struct amdgpu_vm *vm,
+ unsigned vmhub)
+{
+ struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub];
+
+ mutex_lock(&id_mgr->lock);
+ if (vm->reserved_vmid[vmhub]) {
+ list_add(&vm->reserved_vmid[vmhub]->list,
+ &id_mgr->ids_lru);
+ vm->reserved_vmid[vmhub] = NULL;
+ atomic_dec(&id_mgr->reserved_vmid_num);
+ }
+ mutex_unlock(&id_mgr->lock);
+}
+
+/**
+ * amdgpu_vmid_reset - reset VMID to zero
+ *
+ * @adev: amdgpu device structure
+ * @vm_id: vmid number to use
+ *
+ * Reset saved GDW, GWS and OA to force switch on next flush.
+ */
+void amdgpu_vmid_reset(struct amdgpu_device *adev, unsigned vmhub,
+ unsigned vmid)
+{
+ struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub];
+ struct amdgpu_vmid *id = &id_mgr->ids[vmid];
+
+ atomic64_set(&id->owner, 0);
+ id->gds_base = 0;
+ id->gds_size = 0;
+ id->gws_base = 0;
+ id->gws_size = 0;
+ id->oa_base = 0;
+ id->oa_size = 0;
+}
+
+/**
+ * amdgpu_vmid_reset_all - reset VMID to zero
+ *
+ * @adev: amdgpu device structure
+ *
+ * Reset VMID to force flush on next use
+ */
+void amdgpu_vmid_reset_all(struct amdgpu_device *adev)
+{
+ unsigned i, j;
+
+ for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) {
+ struct amdgpu_vmid_mgr *id_mgr =
+ &adev->vm_manager.id_mgr[i];
+
+ for (j = 1; j < id_mgr->num_ids; ++j)
+ amdgpu_vmid_reset(adev, i, j);
+ }
+}
+
+/**
+ * amdgpu_vmid_mgr_init - init the VMID manager
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Initialize the VM manager structures
+ */
+void amdgpu_vmid_mgr_init(struct amdgpu_device *adev)
+{
+ unsigned i, j;
+
+ for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) {
+ struct amdgpu_vmid_mgr *id_mgr =
+ &adev->vm_manager.id_mgr[i];
+
+ mutex_init(&id_mgr->lock);
+ INIT_LIST_HEAD(&id_mgr->ids_lru);
+ atomic_set(&id_mgr->reserved_vmid_num, 0);
+
+ /* skip over VMID 0, since it is the system VM */
+ for (j = 1; j < id_mgr->num_ids; ++j) {
+ amdgpu_vmid_reset(adev, i, j);
+ amdgpu_sync_create(&id_mgr->ids[i].active);
+ list_add_tail(&id_mgr->ids[j].list, &id_mgr->ids_lru);
+ }
+ }
+
+ adev->vm_manager.fence_context =
+ dma_fence_context_alloc(AMDGPU_MAX_RINGS);
+ for (i = 0; i < AMDGPU_MAX_RINGS; ++i)
+ adev->vm_manager.seqno[i] = 0;
+}
+
+/**
+ * amdgpu_vmid_mgr_fini - cleanup VM manager
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Cleanup the VM manager and free resources.
+ */
+void amdgpu_vmid_mgr_fini(struct amdgpu_device *adev)
+{
+ unsigned i, j;
+
+ for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) {
+ struct amdgpu_vmid_mgr *id_mgr =
+ &adev->vm_manager.id_mgr[i];
+
+ mutex_destroy(&id_mgr->lock);
+ for (j = 0; j < AMDGPU_NUM_VMID; ++j) {
+ struct amdgpu_vmid *id = &id_mgr->ids[j];
+
+ amdgpu_sync_free(&id->active);
+ dma_fence_put(id->flushed_updates);
+ dma_fence_put(id->last_flush);
+ }
+ }
+}
--- /dev/null
+/*
+ * Copyright 2017 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#ifndef __AMDGPU_IDS_H__
+#define __AMDGPU_IDS_H__
+
+#include <linux/types.h>
+#include <linux/mutex.h>
+#include <linux/list.h>
+#include <linux/dma-fence.h>
+
+#include "amdgpu_sync.h"
+
+/* maximum number of VMIDs */
+#define AMDGPU_NUM_VMID 16
+
+struct amdgpu_device;
+struct amdgpu_vm;
+struct amdgpu_ring;
+struct amdgpu_sync;
+struct amdgpu_job;
+
+struct amdgpu_vmid {
+ struct list_head list;
+ struct amdgpu_sync active;
+ struct dma_fence *last_flush;
+ atomic64_t owner;
+
+ uint64_t pd_gpu_addr;
+ /* last flushed PD/PT update */
+ struct dma_fence *flushed_updates;
+
+ uint32_t current_gpu_reset_count;
+
+ uint32_t gds_base;
+ uint32_t gds_size;
+ uint32_t gws_base;
+ uint32_t gws_size;
+ uint32_t oa_base;
+ uint32_t oa_size;
+};
+
+struct amdgpu_vmid_mgr {
+ struct mutex lock;
+ unsigned num_ids;
+ struct list_head ids_lru;
+ struct amdgpu_vmid ids[AMDGPU_NUM_VMID];
+ atomic_t reserved_vmid_num;
+};
+
+int amdgpu_pasid_alloc(unsigned int bits);
+void amdgpu_pasid_free(unsigned int pasid);
+
+bool amdgpu_vmid_had_gpu_reset(struct amdgpu_device *adev,
+ struct amdgpu_vmid *id);
+int amdgpu_vmid_alloc_reserved(struct amdgpu_device *adev,
+ struct amdgpu_vm *vm,
+ unsigned vmhub);
+void amdgpu_vmid_free_reserved(struct amdgpu_device *adev,
+ struct amdgpu_vm *vm,
+ unsigned vmhub);
+int amdgpu_vmid_grab(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
+ struct amdgpu_sync *sync, struct dma_fence *fence,
+ struct amdgpu_job *job);
+void amdgpu_vmid_reset(struct amdgpu_device *adev, unsigned vmhub,
+ unsigned vmid);
+void amdgpu_vmid_reset_all(struct amdgpu_device *adev);
+
+void amdgpu_vmid_mgr_init(struct amdgpu_device *adev);
+void amdgpu_vmid_mgr_fini(struct amdgpu_device *adev);
+
+#endif
while (fence == NULL && vm && !job->vm_id) {
struct amdgpu_ring *ring = job->ring;
- r = amdgpu_vm_grab_id(vm, ring, &job->sync,
- &job->base.s_fence->finished,
- job);
+ r = amdgpu_vmid_grab(vm, ring, &job->sync,
+ &job->base.s_fence->finished,
+ job);
if (r)
DRM_ERROR("Error getting VM ID (%d)\n", r);
#include "amdgpu.h"
#include "amdgpu_trace.h"
-/*
- * PASID manager
- *
- * PASIDs are global address space identifiers that can be shared
- * between the GPU, an IOMMU and the driver. VMs on different devices
- * may use the same PASID if they share the same address
- * space. Therefore PASIDs are allocated using a global IDA. VMs are
- * looked up from the PASID per amdgpu_device.
- */
-static DEFINE_IDA(amdgpu_vm_pasid_ida);
-
-/**
- * amdgpu_vm_alloc_pasid - Allocate a PASID
- * @bits: Maximum width of the PASID in bits, must be at least 1
- *
- * Allocates a PASID of the given width while keeping smaller PASIDs
- * available if possible.
- *
- * Returns a positive integer on success. Returns %-EINVAL if bits==0.
- * Returns %-ENOSPC if no PASID was available. Returns %-ENOMEM on
- * memory allocation failure.
- */
-int amdgpu_vm_alloc_pasid(unsigned int bits)
-{
- int pasid = -EINVAL;
-
- for (bits = min(bits, 31U); bits > 0; bits--) {
- pasid = ida_simple_get(&amdgpu_vm_pasid_ida,
- 1U << (bits - 1), 1U << bits,
- GFP_KERNEL);
- if (pasid != -ENOSPC)
- break;
- }
-
- return pasid;
-}
-
-/**
- * amdgpu_vm_free_pasid - Free a PASID
- * @pasid: PASID to free
- */
-void amdgpu_vm_free_pasid(unsigned int pasid)
-{
- ida_simple_remove(&amdgpu_vm_pasid_ida, pasid);
-}
-
/*
* GPUVM
* GPUVM is similar to the legacy gart on older asics, however
adev->vm_manager.root_level);
}
-/**
- * amdgpu_vm_had_gpu_reset - check if reset occured since last use
- *
- * @adev: amdgpu_device pointer
- * @id: VMID structure
- *
- * Check if GPU reset occured since last use of the VMID.
- */
-static bool amdgpu_vm_had_gpu_reset(struct amdgpu_device *adev,
- struct amdgpu_vm_id *id)
-{
- return id->current_gpu_reset_count !=
- atomic_read(&adev->gpu_reset_counter);
-}
-
-static bool amdgpu_vm_reserved_vmid_ready(struct amdgpu_vm *vm, unsigned vmhub)
-{
- return !!vm->reserved_vmid[vmhub];
-}
-
-/* idr_mgr->lock must be held */
-static int amdgpu_vm_grab_reserved_vmid_locked(struct amdgpu_vm *vm,
- struct amdgpu_ring *ring,
- struct amdgpu_sync *sync,
- struct dma_fence *fence,
- struct amdgpu_job *job)
-{
- struct amdgpu_device *adev = ring->adev;
- unsigned vmhub = ring->funcs->vmhub;
- uint64_t fence_context = adev->fence_context + ring->idx;
- struct amdgpu_vm_id *id = vm->reserved_vmid[vmhub];
- struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub];
- struct dma_fence *updates = sync->last_vm_update;
- int r = 0;
- struct dma_fence *flushed, *tmp;
- bool needs_flush = vm->use_cpu_for_update;
-
- flushed = id->flushed_updates;
- if ((amdgpu_vm_had_gpu_reset(adev, id)) ||
- (atomic64_read(&id->owner) != vm->client_id) ||
- (job->vm_pd_addr != id->pd_gpu_addr) ||
- (updates && (!flushed || updates->context != flushed->context ||
- dma_fence_is_later(updates, flushed))) ||
- (!id->last_flush || (id->last_flush->context != fence_context &&
- !dma_fence_is_signaled(id->last_flush)))) {
- needs_flush = true;
- /* to prevent one context starved by another context */
- id->pd_gpu_addr = 0;
- tmp = amdgpu_sync_peek_fence(&id->active, ring);
- if (tmp) {
- r = amdgpu_sync_fence(adev, sync, tmp, false);
- return r;
- }
- }
-
- /* Good we can use this VMID. Remember this submission as
- * user of the VMID.
- */
- r = amdgpu_sync_fence(ring->adev, &id->active, fence, false);
- if (r)
- goto out;
-
- if (updates && (!flushed || updates->context != flushed->context ||
- dma_fence_is_later(updates, flushed))) {
- dma_fence_put(id->flushed_updates);
- id->flushed_updates = dma_fence_get(updates);
- }
- id->pd_gpu_addr = job->vm_pd_addr;
- atomic64_set(&id->owner, vm->client_id);
- job->vm_needs_flush = needs_flush;
- if (needs_flush) {
- dma_fence_put(id->last_flush);
- id->last_flush = NULL;
- }
- job->vm_id = id - id_mgr->ids;
- trace_amdgpu_vm_grab_id(vm, ring, job);
-out:
- return r;
-}
-
-/**
- * amdgpu_vm_grab_id - allocate the next free VMID
- *
- * @vm: vm to allocate id for
- * @ring: ring we want to submit job to
- * @sync: sync object where we add dependencies
- * @fence: fence protecting ID from reuse
- *
- * Allocate an id for the vm, adding fences to the sync obj as necessary.
- */
-int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
- struct amdgpu_sync *sync, struct dma_fence *fence,
- struct amdgpu_job *job)
-{
- struct amdgpu_device *adev = ring->adev;
- unsigned vmhub = ring->funcs->vmhub;
- struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub];
- uint64_t fence_context = adev->fence_context + ring->idx;
- struct dma_fence *updates = sync->last_vm_update;
- struct amdgpu_vm_id *id, *idle;
- struct dma_fence **fences;
- unsigned i;
- int r = 0;
-
- mutex_lock(&id_mgr->lock);
- if (amdgpu_vm_reserved_vmid_ready(vm, vmhub)) {
- r = amdgpu_vm_grab_reserved_vmid_locked(vm, ring, sync, fence, job);
- mutex_unlock(&id_mgr->lock);
- return r;
- }
- fences = kmalloc_array(sizeof(void *), id_mgr->num_ids, GFP_KERNEL);
- if (!fences) {
- mutex_unlock(&id_mgr->lock);
- return -ENOMEM;
- }
- /* Check if we have an idle VMID */
- i = 0;
- list_for_each_entry(idle, &id_mgr->ids_lru, list) {
- fences[i] = amdgpu_sync_peek_fence(&idle->active, ring);
- if (!fences[i])
- break;
- ++i;
- }
-
- /* If we can't find a idle VMID to use, wait till one becomes available */
- if (&idle->list == &id_mgr->ids_lru) {
- u64 fence_context = adev->vm_manager.fence_context + ring->idx;
- unsigned seqno = ++adev->vm_manager.seqno[ring->idx];
- struct dma_fence_array *array;
- unsigned j;
-
- for (j = 0; j < i; ++j)
- dma_fence_get(fences[j]);
-
- array = dma_fence_array_create(i, fences, fence_context,
- seqno, true);
- if (!array) {
- for (j = 0; j < i; ++j)
- dma_fence_put(fences[j]);
- kfree(fences);
- r = -ENOMEM;
- goto error;
- }
-
-
- r = amdgpu_sync_fence(ring->adev, sync, &array->base, false);
- dma_fence_put(&array->base);
- if (r)
- goto error;
-
- mutex_unlock(&id_mgr->lock);
- return 0;
-
- }
- kfree(fences);
-
- job->vm_needs_flush = vm->use_cpu_for_update;
- /* Check if we can use a VMID already assigned to this VM */
- list_for_each_entry_reverse(id, &id_mgr->ids_lru, list) {
- struct dma_fence *flushed;
- bool needs_flush = vm->use_cpu_for_update;
-
- /* Check all the prerequisites to using this VMID */
- if (amdgpu_vm_had_gpu_reset(adev, id))
- continue;
-
- if (atomic64_read(&id->owner) != vm->client_id)
- continue;
-
- if (job->vm_pd_addr != id->pd_gpu_addr)
- continue;
-
- if (!id->last_flush ||
- (id->last_flush->context != fence_context &&
- !dma_fence_is_signaled(id->last_flush)))
- needs_flush = true;
-
- flushed = id->flushed_updates;
- if (updates && (!flushed || dma_fence_is_later(updates, flushed)))
- needs_flush = true;
-
- /* Concurrent flushes are only possible starting with Vega10 */
- if (adev->asic_type < CHIP_VEGA10 && needs_flush)
- continue;
-
- /* Good we can use this VMID. Remember this submission as
- * user of the VMID.
- */
- r = amdgpu_sync_fence(ring->adev, &id->active, fence, false);
- if (r)
- goto error;
-
- if (updates && (!flushed || dma_fence_is_later(updates, flushed))) {
- dma_fence_put(id->flushed_updates);
- id->flushed_updates = dma_fence_get(updates);
- }
-
- if (needs_flush)
- goto needs_flush;
- else
- goto no_flush_needed;
-
- };
-
- /* Still no ID to use? Then use the idle one found earlier */
- id = idle;
-
- /* Remember this submission as user of the VMID */
- r = amdgpu_sync_fence(ring->adev, &id->active, fence, false);
- if (r)
- goto error;
-
- id->pd_gpu_addr = job->vm_pd_addr;
- dma_fence_put(id->flushed_updates);
- id->flushed_updates = dma_fence_get(updates);
- atomic64_set(&id->owner, vm->client_id);
-
-needs_flush:
- job->vm_needs_flush = true;
- dma_fence_put(id->last_flush);
- id->last_flush = NULL;
-
-no_flush_needed:
- list_move_tail(&id->list, &id_mgr->ids_lru);
-
- job->vm_id = id - id_mgr->ids;
- trace_amdgpu_vm_grab_id(vm, ring, job);
-
-error:
- mutex_unlock(&id_mgr->lock);
- return r;
-}
-
-static void amdgpu_vm_free_reserved_vmid(struct amdgpu_device *adev,
- struct amdgpu_vm *vm,
- unsigned vmhub)
-{
- struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub];
-
- mutex_lock(&id_mgr->lock);
- if (vm->reserved_vmid[vmhub]) {
- list_add(&vm->reserved_vmid[vmhub]->list,
- &id_mgr->ids_lru);
- vm->reserved_vmid[vmhub] = NULL;
- atomic_dec(&id_mgr->reserved_vmid_num);
- }
- mutex_unlock(&id_mgr->lock);
-}
-
-static int amdgpu_vm_alloc_reserved_vmid(struct amdgpu_device *adev,
- struct amdgpu_vm *vm,
- unsigned vmhub)
-{
- struct amdgpu_vm_id_manager *id_mgr;
- struct amdgpu_vm_id *idle;
- int r = 0;
-
- id_mgr = &adev->vm_manager.id_mgr[vmhub];
- mutex_lock(&id_mgr->lock);
- if (vm->reserved_vmid[vmhub])
- goto unlock;
- if (atomic_inc_return(&id_mgr->reserved_vmid_num) >
- AMDGPU_VM_MAX_RESERVED_VMID) {
- DRM_ERROR("Over limitation of reserved vmid\n");
- atomic_dec(&id_mgr->reserved_vmid_num);
- r = -EINVAL;
- goto unlock;
- }
- /* Select the first entry VMID */
- idle = list_first_entry(&id_mgr->ids_lru, struct amdgpu_vm_id, list);
- list_del_init(&idle->list);
- vm->reserved_vmid[vmhub] = idle;
- mutex_unlock(&id_mgr->lock);
-
- return 0;
-unlock:
- mutex_unlock(&id_mgr->lock);
- return r;
-}
-
/**
* amdgpu_vm_check_compute_bug - check whether asic has compute vm bug
*
{
struct amdgpu_device *adev = ring->adev;
unsigned vmhub = ring->funcs->vmhub;
- struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub];
- struct amdgpu_vm_id *id;
+ struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub];
+ struct amdgpu_vmid *id;
bool gds_switch_needed;
bool vm_flush_needed = job->vm_needs_flush || ring->has_compute_vm_bug;
id->oa_base != job->oa_base ||
id->oa_size != job->oa_size);
- if (amdgpu_vm_had_gpu_reset(adev, id))
+ if (amdgpu_vmid_had_gpu_reset(adev, id))
return true;
return vm_flush_needed || gds_switch_needed;
{
struct amdgpu_device *adev = ring->adev;
unsigned vmhub = ring->funcs->vmhub;
- struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub];
- struct amdgpu_vm_id *id = &id_mgr->ids[job->vm_id];
+ struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub];
+ struct amdgpu_vmid *id = &id_mgr->ids[job->vm_id];
bool gds_switch_needed = ring->funcs->emit_gds_switch && (
id->gds_base != job->gds_base ||
id->gds_size != job->gds_size ||
unsigned patch_offset = 0;
int r;
- if (amdgpu_vm_had_gpu_reset(adev, id)) {
+ if (amdgpu_vmid_had_gpu_reset(adev, id)) {
gds_switch_needed = true;
vm_flush_needed = true;
}
return 0;
}
-/**
- * amdgpu_vm_reset_id - reset VMID to zero
- *
- * @adev: amdgpu device structure
- * @vm_id: vmid number to use
- *
- * Reset saved GDW, GWS and OA to force switch on next flush.
- */
-void amdgpu_vm_reset_id(struct amdgpu_device *adev, unsigned vmhub,
- unsigned vmid)
-{
- struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub];
- struct amdgpu_vm_id *id = &id_mgr->ids[vmid];
-
- atomic64_set(&id->owner, 0);
- id->gds_base = 0;
- id->gds_size = 0;
- id->gws_base = 0;
- id->gws_size = 0;
- id->oa_base = 0;
- id->oa_size = 0;
-}
-
-/**
- * amdgpu_vm_reset_all_id - reset VMID to zero
- *
- * @adev: amdgpu device structure
- *
- * Reset VMID to force flush on next use
- */
-void amdgpu_vm_reset_all_ids(struct amdgpu_device *adev)
-{
- unsigned i, j;
-
- for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) {
- struct amdgpu_vm_id_manager *id_mgr =
- &adev->vm_manager.id_mgr[i];
-
- for (j = 1; j < id_mgr->num_ids; ++j)
- amdgpu_vm_reset_id(adev, i, j);
- }
-}
-
/**
* amdgpu_vm_bo_find - find the bo_va for a specific vm & bo
*
amdgpu_bo_unref(&root);
dma_fence_put(vm->last_update);
for (i = 0; i < AMDGPU_MAX_VMHUBS; i++)
- amdgpu_vm_free_reserved_vmid(adev, vm, i);
+ amdgpu_vmid_free_reserved(adev, vm, i);
}
/**
*/
void amdgpu_vm_manager_init(struct amdgpu_device *adev)
{
- unsigned i, j;
-
- for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) {
- struct amdgpu_vm_id_manager *id_mgr =
- &adev->vm_manager.id_mgr[i];
+ unsigned i;
- mutex_init(&id_mgr->lock);
- INIT_LIST_HEAD(&id_mgr->ids_lru);
- atomic_set(&id_mgr->reserved_vmid_num, 0);
-
- /* skip over VMID 0, since it is the system VM */
- for (j = 1; j < id_mgr->num_ids; ++j) {
- amdgpu_vm_reset_id(adev, i, j);
- amdgpu_sync_create(&id_mgr->ids[i].active);
- list_add_tail(&id_mgr->ids[j].list, &id_mgr->ids_lru);
- }
- }
+ amdgpu_vmid_mgr_init(adev);
adev->vm_manager.fence_context =
dma_fence_context_alloc(AMDGPU_MAX_RINGS);
*/
void amdgpu_vm_manager_fini(struct amdgpu_device *adev)
{
- unsigned i, j;
-
WARN_ON(!idr_is_empty(&adev->vm_manager.pasid_idr));
idr_destroy(&adev->vm_manager.pasid_idr);
- for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) {
- struct amdgpu_vm_id_manager *id_mgr =
- &adev->vm_manager.id_mgr[i];
-
- mutex_destroy(&id_mgr->lock);
- for (j = 0; j < AMDGPU_NUM_VM; ++j) {
- struct amdgpu_vm_id *id = &id_mgr->ids[j];
-
- amdgpu_sync_free(&id->active);
- dma_fence_put(id->flushed_updates);
- dma_fence_put(id->last_flush);
- }
- }
+ amdgpu_vmid_mgr_fini(adev);
}
int amdgpu_vm_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
switch (args->in.op) {
case AMDGPU_VM_OP_RESERVE_VMID:
/* current, we only have requirement to reserve vmid from gfxhub */
- r = amdgpu_vm_alloc_reserved_vmid(adev, &fpriv->vm,
- AMDGPU_GFXHUB);
+ r = amdgpu_vmid_alloc_reserved(adev, &fpriv->vm, AMDGPU_GFXHUB);
if (r)
return r;
break;
case AMDGPU_VM_OP_UNRESERVE_VMID:
- amdgpu_vm_free_reserved_vmid(adev, &fpriv->vm, AMDGPU_GFXHUB);
+ amdgpu_vmid_free_reserved(adev, &fpriv->vm, AMDGPU_GFXHUB);
break;
default:
return -EINVAL;
#include "amdgpu_sync.h"
#include "amdgpu_ring.h"
+#include "amdgpu_ids.h"
struct amdgpu_bo_va;
struct amdgpu_job;
* GPUVM handling
*/
-/* maximum number of VMIDs */
-#define AMDGPU_NUM_VM 16
-
/* Maximum number of PTEs the hardware can write with one command */
#define AMDGPU_VM_MAX_UPDATE_SIZE 0x3FFFF
u64 client_id;
unsigned int pasid;
/* dedicated to vm */
- struct amdgpu_vm_id *reserved_vmid[AMDGPU_MAX_VMHUBS];
+ struct amdgpu_vmid *reserved_vmid[AMDGPU_MAX_VMHUBS];
/* Flag to indicate if VM tables are updated by CPU or GPU (SDMA) */
bool use_cpu_for_update;
unsigned int fault_credit;
};
-struct amdgpu_vm_id {
- struct list_head list;
- struct amdgpu_sync active;
- struct dma_fence *last_flush;
- atomic64_t owner;
-
- uint64_t pd_gpu_addr;
- /* last flushed PD/PT update */
- struct dma_fence *flushed_updates;
-
- uint32_t current_gpu_reset_count;
-
- uint32_t gds_base;
- uint32_t gds_size;
- uint32_t gws_base;
- uint32_t gws_size;
- uint32_t oa_base;
- uint32_t oa_size;
-};
-
-struct amdgpu_vm_id_manager {
- struct mutex lock;
- unsigned num_ids;
- struct list_head ids_lru;
- struct amdgpu_vm_id ids[AMDGPU_NUM_VM];
- atomic_t reserved_vmid_num;
-};
-
struct amdgpu_vm_manager {
/* Handling of VMIDs */
- struct amdgpu_vm_id_manager id_mgr[AMDGPU_MAX_VMHUBS];
+ struct amdgpu_vmid_mgr id_mgr[AMDGPU_MAX_VMHUBS];
/* Handling of VM fences */
u64 fence_context;
spinlock_t pasid_lock;
};
-int amdgpu_vm_alloc_pasid(unsigned int bits);
-void amdgpu_vm_free_pasid(unsigned int pasid);
void amdgpu_vm_manager_init(struct amdgpu_device *adev);
void amdgpu_vm_manager_fini(struct amdgpu_device *adev);
int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm,
int amdgpu_vm_alloc_pts(struct amdgpu_device *adev,
struct amdgpu_vm *vm,
uint64_t saddr, uint64_t size);
-int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
- struct amdgpu_sync *sync, struct dma_fence *fence,
- struct amdgpu_job *job);
int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_pipe_sync);
-void amdgpu_vm_reset_id(struct amdgpu_device *adev, unsigned vmhub,
- unsigned vmid);
-void amdgpu_vm_reset_all_ids(struct amdgpu_device *adev);
int amdgpu_vm_update_directories(struct amdgpu_device *adev,
struct amdgpu_vm *vm);
int amdgpu_vm_clear_freed(struct amdgpu_device *adev,
if (r)
return r;
- amdgpu_vm_reset_all_ids(adev);
+ amdgpu_vmid_reset_all(adev);
return 0;
}
if (r)
return r;
- amdgpu_vm_reset_all_ids(adev);
+ amdgpu_vmid_reset_all(adev);
return 0;
}
if (r)
return r;
- amdgpu_vm_reset_all_ids(adev);
+ amdgpu_vmid_reset_all(adev);
return 0;
}
if (r)
return r;
- amdgpu_vm_reset_all_ids(adev);
+ amdgpu_vmid_reset_all(adev);
return 0;
}
projects / openwrt / staging / blogic.git / commitdiff