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| author | Dave Airlie <airlied@redhat.com> | 2020-09-08 06:41:40 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2020-09-08 06:41:40 +0200 |
| commit | ce5c207c6b8dd9cdeaeeb2345b8a69335c0d98bf (patch) | |
| tree | 3a54614d597b7b92ada36c5ea26dc994216b628b /drivers/dma/idxd/device.c | |
| parent | Merge tag 'drm-intel-next-2020-08-24-1' of git://anongit.freedesktop.org/drm/... (diff) | |
| parent | Linux 5.9-rc4 (diff) | |
| download | linux-ce5c207c6b8dd9cdeaeeb2345b8a69335c0d98bf.tar.xz linux-ce5c207c6b8dd9cdeaeeb2345b8a69335c0d98bf.zip | |
Merge tag 'v5.9-rc4' into drm-next
Backmerge 5.9-rc4 as there is a nasty qxl conflict
that needs to be resolved.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/dma/idxd/device.c')
| -rw-r--r-- | drivers/dma/idxd/device.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c index 14b45853aa5f..b75d699160bf 100644 --- a/drivers/dma/idxd/device.c +++ b/drivers/dma/idxd/device.c @@ -410,10 +410,27 @@ int idxd_device_enable(struct idxd_device *idxd) return 0; } +void idxd_device_wqs_clear_state(struct idxd_device *idxd) +{ + int i; + + lockdep_assert_held(&idxd->dev_lock); + + for (i = 0; i < idxd->max_wqs; i++) { + struct idxd_wq *wq = &idxd->wqs[i]; + + if (wq->state == IDXD_WQ_ENABLED) { + idxd_wq_disable_cleanup(wq); + wq->state = IDXD_WQ_DISABLED; + } + } +} + int idxd_device_disable(struct idxd_device *idxd) { struct device *dev = &idxd->pdev->dev; u32 status; + unsigned long flags; if (!idxd_is_enabled(idxd)) { dev_dbg(dev, "Device is not enabled\n"); @@ -429,13 +446,22 @@ int idxd_device_disable(struct idxd_device *idxd) return -ENXIO; } + spin_lock_irqsave(&idxd->dev_lock, flags); + idxd_device_wqs_clear_state(idxd); idxd->state = IDXD_DEV_CONF_READY; + spin_unlock_irqrestore(&idxd->dev_lock, flags); return 0; } void idxd_device_reset(struct idxd_device *idxd) { + unsigned long flags; + idxd_cmd_exec(idxd, IDXD_CMD_RESET_DEVICE, 0, NULL); + spin_lock_irqsave(&idxd->dev_lock, flags); + idxd_device_wqs_clear_state(idxd); + idxd->state = IDXD_DEV_CONF_READY; + spin_unlock_irqrestore(&idxd->dev_lock, flags); } /* Device configuration bits */ |