From fef9b30a2b437c0103c33443566604027529b91d Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Sun, 27 Aug 2006 08:55:02 +1000 Subject: initial import of nouveau code from nouveau CVS --- shared-core/nouveau_irq.c | 208 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 208 insertions(+) create mode 100644 shared-core/nouveau_irq.c (limited to 'shared-core/nouveau_irq.c') diff --git a/shared-core/nouveau_irq.c b/shared-core/nouveau_irq.c new file mode 100644 index 00000000..d4691293 --- /dev/null +++ b/shared-core/nouveau_irq.c @@ -0,0 +1,208 @@ +#include "drmP.h" +#include "drm.h" +#include "nouveau_drm.h" +#include "nouveau_drv.h" +#include "nouveau_reg.h" + +void nouveau_irq_preinstall(drm_device_t *dev) +{ + drm_nouveau_private_t *dev_priv = dev->dev_private; + + DRM_DEBUG("IRQ: preinst\n"); + + /* Disable/Clear PFIFO interrupts */ + NV_WRITE(NV_PFIFO_INTEN, 0); + NV_WRITE(NV_PFIFO_INTSTAT, 0xFFFFFFFF); + /* Disable/Clear PGRAPH interrupts */ + NV_WRITE(NV_PGRAPH_INTEN, 0); + NV_WRITE(NV_PGRAPH_INTSTAT, 0xFFFFFFFF); +#if 0 + /* Disable/Clear CRTC0/1 interrupts */ + NV_WRITE(NV_CRTC0_INTEN, 0); + NV_WRITE(NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK); + NV_WRITE(NV_CRTC1_INTEN, 0); + NV_WRITE(NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK); +#endif + /* Master disable */ + NV_WRITE(NV_PMC_INTEN, 0); +} + +void nouveau_irq_postinstall(drm_device_t *dev) +{ + drm_nouveau_private_t *dev_priv = dev->dev_private; + + DRM_DEBUG("IRQ: postinst\n"); + + /* Enable PFIFO error reporting */ + NV_WRITE(NV_PFIFO_INTEN , NV_PFIFO_INTR_ERROR); + NV_WRITE(NV_PFIFO_INTSTAT, 0xFFFFFFFF); + + /* Enable PGRAPH interrupts */ + NV_WRITE(NV_PGRAPH_INTEN, + NV_PGRAPH_INTR_NOTIFY | + NV_PGRAPH_INTR_MISSING_HW | + NV_PGRAPH_INTR_BUFFER_NOTIFY | + NV_PGRAPH_INTR_ERROR + ); + NV_WRITE(NV_PGRAPH_INTSTAT, 0xFFFFFFFF); + +#if 0 + /* Enable CRTC0/1 interrupts */ + NV_WRITE(NV_CRTC0_INTEN, NV_CRTC_INTR_VBLANK); + NV_WRITE(NV_CRTC1_INTEN, NV_CRTC_INTR_VBLANK); +#endif + + /* Master enable */ + NV_WRITE(NV_PMC_INTEN, NV_PMC_INTEN_MASTER_ENABLE); +} + +void nouveau_irq_uninstall(drm_device_t *dev) +{ + drm_nouveau_private_t *dev_priv = dev->dev_private; + + DRM_DEBUG("IRQ: uninst\n"); + + /* Disable PFIFO interrupts */ + NV_WRITE(NV_PFIFO_INTEN, 0); + /* Disable PGRAPH interrupts */ + NV_WRITE(NV_PGRAPH_INTEN, 0); +#if 0 + /* Disable CRTC0/1 interrupts */ + NV_WRITE(NV_CRTC0_INTEN, 0); + NV_WRITE(NV_CRTC1_INTEN, 0); +#endif + /* Master disable */ + NV_WRITE(NV_PMC_INTEN, 0); +} + +void nouveau_fifo_irq_handler(drm_nouveau_private_t *dev_priv) +{ + uint32_t status, chmode, chstat; + + status = NV_READ(NV_PFIFO_INTSTAT); + if (!status) + return; + chmode = NV_READ(NV_PFIFO_MODE); + chstat = NV_READ(0x2508); + + DRM_DEBUG("NV: PFIFO interrupt! INTSTAT=0x%08x/MODE=0x%08x/PEND=0x%08x\n", + status, chmode, chstat); + + if (status & NV_PFIFO_INTR_ERROR) { + DRM_ERROR("NV: PFIFO error interrupt\n"); + + status &= ~NV_PFIFO_INTR_ERROR; + NV_WRITE(NV_PFIFO_INTSTAT, NV_PFIFO_INTR_ERROR); + } + + if (status) { + DRM_INFO("NV: unknown PFIFO interrupt. status=0x%08x\n", status); + + NV_WRITE(NV_PFIFO_INTSTAT, status); + } + + NV_WRITE(NV_PMC_INTSTAT, NV_PMC_INTSTAT_PFIFO_PENDING); +} + +void nouveau_pgraph_irq_handler(drm_nouveau_private_t *dev_priv) +{ + uint32_t status; + + status = NV_READ(NV_PGRAPH_INTSTAT); + if (!status) + return; + + if (status & NV_PGRAPH_INTR_NOTIFY) { + uint32_t nsource, nstatus, instance, notify; + DRM_DEBUG("NV: PGRAPH notify interrupt\n"); + + nstatus = NV_READ(0x00400104); + nsource = NV_READ(0x00400108); + DRM_DEBUG("nsource:0x%08x\tnstatus:0x%08x\n", nsource, nstatus); + + instance = NV_READ(0x00400158); + notify = NV_READ(0x00400150) >> 16; + DRM_DEBUG("instance:0x%08x\tnotify:0x%08x\n", nsource, nstatus); + + status &= ~NV_PGRAPH_INTR_NOTIFY; + NV_WRITE(NV_PGRAPH_INTSTAT, NV_PGRAPH_INTR_NOTIFY); + } + + if (status & NV_PGRAPH_INTR_BUFFER_NOTIFY) { + uint32_t nsource, nstatus, instance, notify; + DRM_DEBUG("NV: PGRAPH buffer notify interrupt\n"); + + nstatus = NV_READ(0x00400104); + nsource = NV_READ(0x00400108); + DRM_DEBUG("nsource:0x%08x\tnstatus:0x%08x\n", nsource, nstatus); + + instance = NV_READ(0x00400158); + notify = NV_READ(0x00400150) >> 16; + DRM_DEBUG("instance:0x%08x\tnotify:0x%08x\n", nsource, nstatus); + + status &= ~NV_PGRAPH_INTR_BUFFER_NOTIFY; + NV_WRITE(NV_PGRAPH_INTSTAT, NV_PGRAPH_INTR_BUFFER_NOTIFY); + } + + if (status & NV_PGRAPH_INTR_MISSING_HW) { + DRM_ERROR("NV: PGRAPH missing hw interrupt\n"); + + status &= ~NV_PGRAPH_INTR_MISSING_HW; + NV_WRITE(NV_PGRAPH_INTSTAT, NV_PGRAPH_INTR_MISSING_HW); + } + + if (status & NV_PGRAPH_INTR_ERROR) { + DRM_ERROR("NV: PGRAPH error interrupt\n"); + + status &= ~NV_PGRAPH_INTR_ERROR; + NV_WRITE(NV_PGRAPH_INTSTAT, NV_PGRAPH_INTR_ERROR); + } + + if (status) { + DRM_INFO("NV: Unknown PGRAPH interrupt! STAT=0x%08x\n", status); + NV_WRITE(NV_PGRAPH_INTSTAT, status); + } + + NV_WRITE(NV_PMC_INTSTAT, NV_PMC_INTSTAT_PGRAPH_PENDING); +} + +void nouveau_crtc_irq_handler(drm_nouveau_private_t *dev_priv, int crtc) +{ + if (crtc&1) { + NV_WRITE(NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK); + } + + if (crtc&2) { + NV_WRITE(NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK); + } +} + +irqreturn_t nouveau_irq_handler(DRM_IRQ_ARGS) +{ + drm_device_t *dev = (drm_device_t*)arg; + drm_nouveau_private_t *dev_priv = dev->dev_private; + uint32_t status; + + status = NV_READ(NV_PMC_INTSTAT); + + DRM_DEBUG("PMC INTSTAT: 0x%08x\n", status); + + if (status & NV_PMC_INTSTAT_PFIFO_PENDING) { + nouveau_fifo_irq_handler(dev_priv); + status &= ~NV_PMC_INTSTAT_PFIFO_PENDING; + } + if (status & NV_PMC_INTSTAT_PGRAPH_PENDING) { + nouveau_pgraph_irq_handler(dev_priv); + status &= ~NV_PMC_INTSTAT_PGRAPH_PENDING; + } + if (status & NV_PMC_INTSTAT_CRTCn_PENDING) { + nouveau_crtc_irq_handler(dev_priv, (status>>24)&3); + status &= ~NV_PMC_INTSTAT_CRTCn_PENDING; + } + + if (status) + DRM_ERROR("Unhandled PMC INTR status bits 0x%08x\n", status); + + return IRQ_HANDLED; +} + -- cgit v1.2.3