diff options
Diffstat (limited to 'linux-core')
| -rw-r--r-- | linux-core/Makefile.kernel | 2 | ||||
| -rw-r--r-- | linux-core/i915_drv.c | 11 | ||||
| -rw-r--r-- | linux-core/i915_fence.c | 121 |
3 files changed, 133 insertions, 1 deletions
diff --git a/linux-core/Makefile.kernel b/linux-core/Makefile.kernel index 3c31b013..c5ce6638 100644 --- a/linux-core/Makefile.kernel +++ b/linux-core/Makefile.kernel @@ -19,7 +19,7 @@ r128-objs := r128_drv.o r128_cce.o r128_state.o r128_irq.o mga-objs := mga_drv.o mga_dma.o mga_state.o mga_warp.o mga_irq.o i810-objs := i810_drv.o i810_dma.o i830-objs := i830_drv.o i830_dma.o i830_irq.o -i915-objs := i915_drv.o i915_dma.o i915_irq.o i915_mem.o +i915-objs := i915_drv.o i915_dma.o i915_irq.o i915_mem.o i915_fence.o radeon-objs := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o r300_cmdbuf.o sis-objs := sis_drv.o sis_mm.o ffb-objs := ffb_drv.o ffb_context.o diff --git a/linux-core/i915_drv.c b/linux-core/i915_drv.c index c6e25f9b..d1b8d2d2 100644 --- a/linux-core/i915_drv.c +++ b/linux-core/i915_drv.c @@ -38,6 +38,16 @@ static struct pci_device_id pciidlist[] = { i915_PCI_IDS }; +static drm_fence_driver_t i915_fence_driver = { + .no_types = 2, + .wrap_diff = (1 << 30), + .flush_diff = 200, + .sequence_mask = 0xffffffffU, + .lazy_capable = 1, + .emit = i915_fence_emit_sequence, + .poke_flush = i915_poke_flush, +}; + static int probe(struct pci_dev *pdev, const struct pci_device_id *ent); static struct drm_driver driver = { /* don't use mtrr's here, the Xserver or user space app should @@ -78,6 +88,7 @@ static struct drm_driver driver = { .remove = __devexit_p(drm_cleanup_pci), }, + .fence_driver = &i915_fence_driver, .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = DRIVER_DATE, diff --git a/linux-core/i915_fence.c b/linux-core/i915_fence.c new file mode 100644 index 00000000..46a2a728 --- /dev/null +++ b/linux-core/i915_fence.c @@ -0,0 +1,121 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ +/* + * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include "drmP.h" +#include "drm.h" +#include "i915_drm.h" +#include "i915_drv.h" + +/* + * Implements an intel sync flush operation. + */ + +static void i915_perform_flush(drm_device_t * dev) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + drm_fence_manager_t *fm = &dev->fm; + drm_fence_driver_t *driver = dev->driver->fence_driver; + int flush_completed = 0; + uint32_t flush_flags = 0; + uint32_t flush_sequence = 0; + uint32_t i_status; + uint32_t diff; + uint32_t sequence; + + if (fm->pending_exe_flush) { + sequence = READ_BREADCRUMB(dev_priv); + diff = sequence - fm->last_exe_flush; + if (diff < driver->wrap_diff && diff != 0) { + drm_fence_handler(dev, sequence, DRM_FENCE_EXE); + diff = sequence - fm->exe_flush_sequence; + if (diff < driver->wrap_diff) { + fm->pending_exe_flush = 0; + /* + * Turn off user IRQs + */ + } else { + /* + * Turn on user IRQs + */ + } + } + } + if (dev_priv->flush_pending) { + i_status = READ_HWSP(dev_priv, 0); + if ((i_status & (1 << 12)) != + (dev_priv->saved_flush_status & (1 << 12))) { + flush_completed = 1; + flush_flags = dev_priv->flush_flags; + flush_sequence = dev_priv->flush_sequence; + dev_priv->flush_pending = 0; + } else { + } + } + if (flush_completed) { + drm_fence_handler(dev, flush_sequence, flush_flags); + } + if (fm->pending_flush && !dev_priv->flush_pending) { + dev_priv->flush_sequence = (uint32_t) READ_BREADCRUMB(dev_priv); + dev_priv->flush_flags = fm->pending_flush; + dev_priv->saved_flush_status = READ_HWSP(dev_priv, 0); + I915_WRITE(I915REG_INSTPM, (1 << 5) | (1 << 21)); + dev_priv->flush_pending = 1; + fm->pending_flush = 0; + } +} + +void i915_poke_flush(drm_device_t * dev) +{ + drm_fence_manager_t *fm = &dev->fm; + unsigned long flags; + + write_lock_irqsave(&fm->lock, flags); + i915_perform_flush(dev); + write_unlock_irqrestore(&fm->lock, flags); +} + +int i915_fence_emit_sequence(drm_device_t * dev, uint32_t * sequence) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + i915_emit_irq(dev); + *sequence = (uint32_t) dev_priv->counter; + return 0; +} + +void i915_fence_handler(drm_device_t * dev) +{ + drm_fence_manager_t *fm = &dev->fm; + + write_lock(&fm->lock); + i915_perform_flush(dev); + i915_perform_flush(dev); + write_unlock(&fm->lock); +} |