diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2021-09-09 01:04:03 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-10-25 08:39:15 +0200 |
| commit | 88d97ea82cbe352851a8654ee952d3a694c8c2c6 (patch) | |
| tree | 1eb81feaa646a58b6df8eae44952bde735afa56a /drivers/dma/idxd/irq.c | |
| parent | dmaengine: fsl-edma: fix for missing dmamux module (diff) | |
| download | linux-88d97ea82cbe352851a8654ee952d3a694c8c2c6.tar.xz linux-88d97ea82cbe352851a8654ee952d3a694c8c2c6.zip | |
dmaengine: idxd: add halt interrupt support
Add halt interrupt support. Given that the misc interrupt handler already
check halt state, the driver just need to run the halt handling code when
receiving the halt interrupt.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/163114224352.846654.14334468363464318828.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd/irq.c')
| -rw-r--r-- | drivers/dma/idxd/irq.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/dma/idxd/irq.c b/drivers/dma/idxd/irq.c index 79fcfc4883e4..17f2f8a31b63 100644 --- a/drivers/dma/idxd/irq.c +++ b/drivers/dma/idxd/irq.c @@ -63,6 +63,9 @@ static int process_misc_interrupts(struct idxd_device *idxd, u32 cause) int i; bool err = false; + if (cause & IDXD_INTC_HALT_STATE) + goto halt; + if (cause & IDXD_INTC_ERR) { spin_lock(&idxd->dev_lock); for (i = 0; i < 4; i++) @@ -121,6 +124,7 @@ static int process_misc_interrupts(struct idxd_device *idxd, u32 cause) if (!err) return 0; +halt: gensts.bits = ioread32(idxd->reg_base + IDXD_GENSTATS_OFFSET); if (gensts.state == IDXD_DEVICE_STATE_HALT) { idxd->state = IDXD_DEV_HALTED; @@ -134,6 +138,7 @@ static int process_misc_interrupts(struct idxd_device *idxd, u32 cause) queue_work(idxd->wq, &idxd->work); } else { spin_lock(&idxd->dev_lock); + idxd->state = IDXD_DEV_HALTED; idxd_wqs_quiesce(idxd); idxd_wqs_unmap_portal(idxd); idxd_device_clear_state(idxd); |