From: Francisco Jerez <[email protected]> Apparently, they generate a PFIFO interrupt each time one of the semaphore methods is executed if its ctxdma wasn't manually marked as valid. This patch makes it flip the valid bit in response to the DMA_SEMAPHORE method (which triggers the IRQ even for a valid ctxdma).
Signed-off-by: Francisco Jerez <[email protected]> Signed-off-by: Ben Skeggs <[email protected]> drivers/gpu/drm/nouveau/nouveau_irq.c | 14 ++++++++++++++ 1 files changed, 14 insertions(+), 0 deletions(-) --- http://git.linuxtv.org/v4l-dvb.git?a=commitdiff;h=139295b671ff4ccd904f2fa58e9dbc0fe99cc7fe diff --git a/drivers/gpu/drm/nouveau/nouveau_irq.c b/drivers/gpu/drm/nouveau/nouveau_irq.c index 3b9bad6..baa9b3e 100644 --- a/drivers/gpu/drm/nouveau/nouveau_irq.c +++ b/drivers/gpu/drm/nouveau/nouveau_irq.c @@ -211,6 +211,20 @@ nouveau_fifo_irq_handler(struct drm_device *dev) get + 4); } + if (status & NV_PFIFO_INTR_SEMAPHORE) { + uint32_t sem; + + status &= ~NV_PFIFO_INTR_SEMAPHORE; + nv_wr32(dev, NV03_PFIFO_INTR_0, + NV_PFIFO_INTR_SEMAPHORE); + + sem = nv_rd32(dev, NV10_PFIFO_CACHE1_SEMAPHORE); + nv_wr32(dev, NV10_PFIFO_CACHE1_SEMAPHORE, sem | 0x1); + + nv_wr32(dev, NV03_PFIFO_CACHE1_GET, get + 4); + nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, 1); + } + if (status) { NV_INFO(dev, "PFIFO_INTR 0x%08x - Ch %d\n", status, chid); _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
