diff options
author | Dave Airlie <airlied@redhat.com> | 2023-09-29 01:27:00 +0300 |
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committer | Dave Airlie <airlied@redhat.com> | 2023-09-29 01:27:15 +0300 |
commit | 79fb229b8810071648b65c37382aea7819a5f935 (patch) | |
tree | bf201cd7732ad48ad98a963344cb535b95653804 /drivers/accel/qaic/qaic_data.c | |
parent | f107ff76a8c242b298413ef52db9978dc3fe0153 (diff) | |
parent | 78f54469b871db5ba8ea49abd4e5994e97bd525b (diff) | |
download | linux-79fb229b8810071648b65c37382aea7819a5f935.tar.xz |
Merge tag 'drm-misc-next-2023-09-27' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for v6.7-rc1:
UAPI Changes:
- drm_file owner is now updated during use, in the case of a drm fd
opened by the display server for a client, the correct owner is
displayed.
- Qaic gains support for the QAIC_DETACH_SLICE_BO ioctl to allow bo
recycling.
Cross-subsystem Changes:
- Disable boot logo for au1200fb, mmpfb and unexport logo helpers.
Only fbcon should manage display of logo.
- Update freescale in MAINTAINERS.
- Add some bridge files to bridge in MAINTAINERS.
- Update gma500 driver repo in MAINTAINERS to point to drm-misc.
Core Changes:
- Move size computations to drm buddy allocator.
- Make drm_atomic_helper_shutdown(NULL) a nop.
- Assorted small fixes in drm_debugfs, DP-MST payload addition error handling.
- Fix DRM_BRIDGE_ATTACH_NO_CONNECTOR handling.
- Handle bad (h/v)sync_end in EDID by clipping to htotal.
- Build GPUVM as a module.
Driver Changes:
- Simple drivers don't need to cache prepared result.
- Call drm_atomic_helper_shutdown() in shutdown/unbind for a whole lot
more drm drivers.
- Assorted small fixes in amdgpu, ssd130x, bridge/it6621, accel/qaic,
nouveau, tc358768.
- Add NV12 for komeda writeback.
- Add arbitration lost event to synopsis/dw-hdmi-cec.
- Speed up s/r in nouveau by not restoring some big bo's.
- Assorted nouveau display rework in preparation for GSP-RM,
especially related to how the modeset sequence works and
the DP sequence in relation to link training.
- Update anx7816 panel.
- Support NVSYNC and NHSYNC in tegra.
- Allow multiple power domains in simple driver.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/f1fae5eb-25b8-192a-9a53-215e1184ce81@linux.intel.com
Diffstat (limited to 'drivers/accel/qaic/qaic_data.c')
-rw-r--r-- | drivers/accel/qaic/qaic_data.c | 187 |
1 files changed, 143 insertions, 44 deletions
diff --git a/drivers/accel/qaic/qaic_data.c b/drivers/accel/qaic/qaic_data.c index f4b06792c6f1..4a8e43a7a6a4 100644 --- a/drivers/accel/qaic/qaic_data.c +++ b/drivers/accel/qaic/qaic_data.c @@ -154,6 +154,7 @@ static void free_slice(struct kref *kref) { struct bo_slice *slice = container_of(kref, struct bo_slice, ref_count); + slice->bo->total_slice_nents -= slice->nents; list_del(&slice->slice); drm_gem_object_put(&slice->bo->base); sg_free_table(slice->sgt); @@ -579,7 +580,7 @@ static void qaic_gem_print_info(struct drm_printer *p, unsigned int indent, { struct qaic_bo *bo = to_qaic_bo(obj); - drm_printf_indent(p, indent, "user requested size=%llu\n", bo->size); + drm_printf_indent(p, indent, "BO DMA direction %d\n", bo->dir); } static const struct vm_operations_struct drm_vm_ops = { @@ -623,6 +624,7 @@ static void qaic_free_object(struct drm_gem_object *obj) qaic_free_sgt(bo->sgt); } + mutex_destroy(&bo->lock); drm_gem_object_release(obj); kfree(bo); } @@ -634,6 +636,19 @@ static const struct drm_gem_object_funcs qaic_gem_funcs = { .vm_ops = &drm_vm_ops, }; +static void qaic_init_bo(struct qaic_bo *bo, bool reinit) +{ + if (reinit) { + bo->sliced = false; + reinit_completion(&bo->xfer_done); + } else { + mutex_init(&bo->lock); + init_completion(&bo->xfer_done); + } + complete_all(&bo->xfer_done); + INIT_LIST_HEAD(&bo->slices); +} + static struct qaic_bo *qaic_alloc_init_bo(void) { struct qaic_bo *bo; @@ -642,9 +657,7 @@ static struct qaic_bo *qaic_alloc_init_bo(void) if (!bo) return ERR_PTR(-ENOMEM); - INIT_LIST_HEAD(&bo->slices); - init_completion(&bo->xfer_done); - complete_all(&bo->xfer_done); + qaic_init_bo(bo, false); return bo; } @@ -695,8 +708,6 @@ int qaic_create_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *fi if (ret) goto free_bo; - bo->size = args->size; - ret = drm_gem_handle_create(file_priv, obj, &args->handle); if (ret) goto free_sgt; @@ -828,7 +839,6 @@ static int qaic_prepare_import_bo(struct qaic_bo *bo, struct qaic_attach_slice_h } bo->sgt = sgt; - bo->size = hdr->size; return 0; } @@ -838,7 +848,7 @@ static int qaic_prepare_export_bo(struct qaic_device *qdev, struct qaic_bo *bo, { int ret; - if (bo->size != hdr->size) + if (bo->base.size < hdr->size) return -EINVAL; ret = dma_map_sgtable(&qdev->pdev->dev, bo->sgt, hdr->dir, 0); @@ -857,9 +867,9 @@ static int qaic_prepare_bo(struct qaic_device *qdev, struct qaic_bo *bo, ret = qaic_prepare_import_bo(bo, hdr); else ret = qaic_prepare_export_bo(qdev, bo, hdr); - - if (ret == 0) - bo->dir = hdr->dir; + bo->dir = hdr->dir; + bo->dbc = &qdev->dbc[hdr->dbc_id]; + bo->nr_slice = hdr->count; return ret; } @@ -868,7 +878,6 @@ static void qaic_unprepare_import_bo(struct qaic_bo *bo) { dma_buf_unmap_attachment(bo->base.import_attach, bo->sgt, bo->dir); bo->sgt = NULL; - bo->size = 0; } static void qaic_unprepare_export_bo(struct qaic_device *qdev, struct qaic_bo *bo) @@ -884,6 +893,8 @@ static void qaic_unprepare_bo(struct qaic_device *qdev, struct qaic_bo *bo) qaic_unprepare_export_bo(qdev, bo); bo->dir = 0; + bo->dbc = NULL; + bo->nr_slice = 0; } static void qaic_free_slices_bo(struct qaic_bo *bo) @@ -892,6 +903,9 @@ static void qaic_free_slices_bo(struct qaic_bo *bo) list_for_each_entry_safe(slice, temp, &bo->slices, slice) kref_put(&slice->ref_count, free_slice); + if (WARN_ON_ONCE(bo->total_slice_nents != 0)) + bo->total_slice_nents = 0; + bo->nr_slice = 0; } static int qaic_attach_slicing_bo(struct qaic_device *qdev, struct qaic_bo *bo, @@ -908,15 +922,11 @@ static int qaic_attach_slicing_bo(struct qaic_device *qdev, struct qaic_bo *bo, } } - if (bo->total_slice_nents > qdev->dbc[hdr->dbc_id].nelem) { + if (bo->total_slice_nents > bo->dbc->nelem) { qaic_free_slices_bo(bo); return -ENOSPC; } - bo->sliced = true; - bo->nr_slice = hdr->count; - list_add_tail(&bo->bo_list, &qdev->dbc[hdr->dbc_id].bo_lists); - return 0; } @@ -994,10 +1004,13 @@ int qaic_attach_slice_bo_ioctl(struct drm_device *dev, void *data, struct drm_fi } bo = to_qaic_bo(obj); + ret = mutex_lock_interruptible(&bo->lock); + if (ret) + goto put_bo; if (bo->sliced) { ret = -EINVAL; - goto put_bo; + goto unlock_bo; } dbc = &qdev->dbc[args->hdr.dbc_id]; @@ -1018,9 +1031,10 @@ int qaic_attach_slice_bo_ioctl(struct drm_device *dev, void *data, struct drm_fi if (args->hdr.dir == DMA_TO_DEVICE) dma_sync_sgtable_for_cpu(&qdev->pdev->dev, bo->sgt, args->hdr.dir); - bo->dbc = dbc; + bo->sliced = true; + list_add_tail(&bo->bo_list, &bo->dbc->bo_lists); srcu_read_unlock(&dbc->ch_lock, rcu_id); - drm_gem_object_put(obj); + mutex_unlock(&bo->lock); kfree(slice_ent); srcu_read_unlock(&qdev->dev_lock, qdev_rcu_id); srcu_read_unlock(&usr->qddev_lock, usr_rcu_id); @@ -1031,6 +1045,8 @@ unprepare_bo: qaic_unprepare_bo(qdev, bo); unlock_ch_srcu: srcu_read_unlock(&dbc->ch_lock, rcu_id); +unlock_bo: + mutex_unlock(&bo->lock); put_bo: drm_gem_object_put(obj); free_slice_ent: @@ -1185,15 +1201,18 @@ static int send_bo_list_to_device(struct qaic_device *qdev, struct drm_file *fil } bo = to_qaic_bo(obj); + ret = mutex_lock_interruptible(&bo->lock); + if (ret) + goto failed_to_send_bo; if (!bo->sliced) { ret = -EINVAL; - goto failed_to_send_bo; + goto unlock_bo; } - if (is_partial && pexec[i].resize > bo->size) { + if (is_partial && pexec[i].resize > bo->base.size) { ret = -EINVAL; - goto failed_to_send_bo; + goto unlock_bo; } spin_lock_irqsave(&dbc->xfer_lock, flags); @@ -1202,7 +1221,7 @@ static int send_bo_list_to_device(struct qaic_device *qdev, struct drm_file *fil if (queued) { spin_unlock_irqrestore(&dbc->xfer_lock, flags); ret = -EINVAL; - goto failed_to_send_bo; + goto unlock_bo; } bo->req_id = dbc->next_req_id++; @@ -1233,17 +1252,20 @@ static int send_bo_list_to_device(struct qaic_device *qdev, struct drm_file *fil if (ret) { bo->queued = false; spin_unlock_irqrestore(&dbc->xfer_lock, flags); - goto failed_to_send_bo; + goto unlock_bo; } } reinit_completion(&bo->xfer_done); list_add_tail(&bo->xfer_list, &dbc->xfer_list); spin_unlock_irqrestore(&dbc->xfer_lock, flags); dma_sync_sgtable_for_device(&qdev->pdev->dev, bo->sgt, bo->dir); + mutex_unlock(&bo->lock); } return 0; +unlock_bo: + mutex_unlock(&bo->lock); failed_to_send_bo: if (likely(obj)) drm_gem_object_put(obj); @@ -1799,6 +1821,91 @@ unlock_usr_srcu: return ret; } +static void detach_slice_bo(struct qaic_device *qdev, struct qaic_bo *bo) +{ + qaic_free_slices_bo(bo); + qaic_unprepare_bo(qdev, bo); + qaic_init_bo(bo, true); + list_del(&bo->bo_list); + drm_gem_object_put(&bo->base); +} + +int qaic_detach_slice_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) +{ + struct qaic_detach_slice *args = data; + int rcu_id, usr_rcu_id, qdev_rcu_id; + struct dma_bridge_chan *dbc; + struct drm_gem_object *obj; + struct qaic_device *qdev; + struct qaic_user *usr; + unsigned long flags; + struct qaic_bo *bo; + int ret; + + if (args->pad != 0) + return -EINVAL; + + usr = file_priv->driver_priv; + usr_rcu_id = srcu_read_lock(&usr->qddev_lock); + if (!usr->qddev) { + ret = -ENODEV; + goto unlock_usr_srcu; + } + + qdev = usr->qddev->qdev; + qdev_rcu_id = srcu_read_lock(&qdev->dev_lock); + if (qdev->in_reset) { + ret = -ENODEV; + goto unlock_dev_srcu; + } + + obj = drm_gem_object_lookup(file_priv, args->handle); + if (!obj) { + ret = -ENOENT; + goto unlock_dev_srcu; + } + + bo = to_qaic_bo(obj); + ret = mutex_lock_interruptible(&bo->lock); + if (ret) + goto put_bo; + + if (!bo->sliced) { + ret = -EINVAL; + goto unlock_bo; + } + + dbc = bo->dbc; + rcu_id = srcu_read_lock(&dbc->ch_lock); + if (dbc->usr != usr) { + ret = -EINVAL; + goto unlock_ch_srcu; + } + + /* Check if BO is committed to H/W for DMA */ + spin_lock_irqsave(&dbc->xfer_lock, flags); + if (bo->queued) { + spin_unlock_irqrestore(&dbc->xfer_lock, flags); + ret = -EBUSY; + goto unlock_ch_srcu; + } + spin_unlock_irqrestore(&dbc->xfer_lock, flags); + + detach_slice_bo(qdev, bo); + +unlock_ch_srcu: + srcu_read_unlock(&dbc->ch_lock, rcu_id); +unlock_bo: + mutex_unlock(&bo->lock); +put_bo: + drm_gem_object_put(obj); +unlock_dev_srcu: + srcu_read_unlock(&qdev->dev_lock, qdev_rcu_id); +unlock_usr_srcu: + srcu_read_unlock(&usr->qddev_lock, usr_rcu_id); + return ret; +} + static void empty_xfer_list(struct qaic_device *qdev, struct dma_bridge_chan *dbc) { unsigned long flags; @@ -1810,6 +1917,12 @@ static void empty_xfer_list(struct qaic_device *qdev, struct dma_bridge_chan *db bo->queued = false; list_del(&bo->xfer_list); spin_unlock_irqrestore(&dbc->xfer_lock, flags); + bo->nr_slice_xfer_done = 0; + bo->req_id = 0; + bo->perf_stats.req_received_ts = 0; + bo->perf_stats.req_submit_ts = 0; + bo->perf_stats.req_processed_ts = 0; + bo->perf_stats.queue_level_before = 0; dma_sync_sgtable_for_cpu(&qdev->pdev->dev, bo->sgt, bo->dir); complete_all(&bo->xfer_done); drm_gem_object_put(&bo->base); @@ -1857,7 +1970,6 @@ void wakeup_dbc(struct qaic_device *qdev, u32 dbc_id) void release_dbc(struct qaic_device *qdev, u32 dbc_id) { - struct bo_slice *slice, *slice_temp; struct qaic_bo *bo, *bo_temp; struct dma_bridge_chan *dbc; @@ -1875,24 +1987,11 @@ void release_dbc(struct qaic_device *qdev, u32 dbc_id) dbc->usr = NULL; list_for_each_entry_safe(bo, bo_temp, &dbc->bo_lists, bo_list) { - list_for_each_entry_safe(slice, slice_temp, &bo->slices, slice) - kref_put(&slice->ref_count, free_slice); - bo->sliced = false; - INIT_LIST_HEAD(&bo->slices); - bo->total_slice_nents = 0; - bo->dir = 0; - bo->dbc = NULL; - bo->nr_slice = 0; - bo->nr_slice_xfer_done = 0; - bo->queued = false; - bo->req_id = 0; - init_completion(&bo->xfer_done); - complete_all(&bo->xfer_done); - list_del(&bo->bo_list); - bo->perf_stats.req_received_ts = 0; - bo->perf_stats.req_submit_ts = 0; - bo->perf_stats.req_processed_ts = 0; - bo->perf_stats.queue_level_before = 0; + drm_gem_object_get(&bo->base); + mutex_lock(&bo->lock); + detach_slice_bo(qdev, bo); + mutex_unlock(&bo->lock); + drm_gem_object_put(&bo->base); } dbc->in_use = false; |