renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

Age	Commit message (Expand)	Author
2008-01-28	Added cursor support	Jakob Bornecrantz

/* * (C) Copyright IBM Corporation 2007 * 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 * on 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 above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * 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 AUTHORS AND/OR THEIR 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. * * Authors: * Ian Romanick <idr@us.ibm.com> */ #include "xgi_drv.h" #include "xgi_regs.h" #include "xgi_misc.h" #include "xgi_cmdlist.h" static int xgi_low_level_fence_emit(struct drm_device *dev, u32 *sequence) { struct xgi_info *const info = dev->dev_private; if (info == NULL) { DRM_ERROR("called with no initialization\n"); return -EINVAL; } DRM_SPINLOCK(&info->fence_lock); info->next_sequence++; if (info->next_sequence > BEGIN_BEGIN_IDENTIFICATION_MASK) { info->next_sequence = 1; } *sequence = (u32) info->next_sequence; DRM_SPINUNLOCK(&info->fence_lock); xgi_emit_irq(info); return 0; } #define GET_BEGIN_ID(i) (le32_to_cpu(DRM_READ32((i)->mmio_map, 0x2820)) \ & BEGIN_BEGIN_IDENTIFICATION_MASK) static int xgi_low_level_fence_wait(struct drm_device *dev, unsigned *sequence) { struct xgi_info *const info = dev->dev_private; unsigned int cur_fence; int ret = 0; if (info == NULL) { DRM_ERROR("called with no initialization\n"); return -EINVAL; } /* Assume that the user has missed the current sequence number * by about a day rather than she wants to wait for years * using fences. */ DRM_WAIT_ON(ret, info->fence_queue, 3 * DRM_HZ, ((((cur_fence = GET_BEGIN_ID(info)) - *sequence) & BEGIN_BEGIN_IDENTIFICATION_MASK) <= (1 << 18))); info->complete_sequence = cur_fence; *sequence = cur_fence; return ret; } int xgi_set_fence_ioctl(struct drm_device * dev, void * data, struct drm_file * filp) { (void) filp; return xgi_low_level_fence_emit(dev, (u32 *) data); } int xgi_wait_fence_ioctl(struct drm_device * dev, void * data, struct drm_file * filp) { (void) filp; return xgi_low_level_fence_wait(dev, (u32 *) data); } #ifdef XGI_HAVE_FENCE static void xgi_fence_poll(struct drm_device * dev, uint32_t class, uint32_t waiting_types) { struct xgi_info * info = dev->dev_private; uint32_t signaled_types = 0; if ((info == NULL) || (class != 0)) return; DRM_SPINLOCK(&info->fence_lock); if (waiting_types) { if (waiting_types & DRM_FENCE_TYPE_EXE) { const u32 begin_id = le32_to_cpu(DRM_READ32(info->mmio_map, 0x2820)) & BEGIN_BEGIN_IDENTIFICATION_MASK; if (begin_id != info->complete_sequence) { info->complete_sequence = begin_id; signaled_types |= DRM_FENCE_TYPE_EXE; } } if (signaled_types) { drm_fence_handler(dev, 0, info->complete_sequence, signaled_types, 0); } } DRM_SPINUNLOCK(&info->fence_lock); } int xgi_fence_emit_sequence(struct drm_device * dev, uint32_t class, uint32_t flags, uint32_t * sequence, uint32_t * native_type) { int err; (void) flags; if (class != 0) return -EINVAL; err = xgi_low_level_fence_emit(dev, sequence); if (err) return err; *native_type = DRM_FENCE_TYPE_EXE; return 0; } void xgi_fence_handler(struct drm_device * dev) { struct drm_fence_manager * fm = &dev->fm; struct drm_fence_class_manager *fc = &fm->fence_class[0]; write_lock(&fm->lock); xgi_fence_poll(dev, 0, fc->waiting_types); write_unlock(&fm->lock); } int xgi_fence_has_irq(struct drm_device *dev, uint32_t class, uint32_t flags) { return ((class == 0) && (flags == DRM_FENCE_TYPE_EXE)) ? 1 : 0; } struct drm_fence_driver xgi_fence_driver = { .num_classes = 1, .wrap_diff = BEGIN_BEGIN_IDENTIFICATION_MASK, .flush_diff = BEGIN_BEGIN_IDENTIFICATION_MASK - 1, .sequence_mask = BEGIN_BEGIN_IDENTIFICATION_MASK, .has_irq = xgi_fence_has_irq, .emit = xgi_fence_emit_sequence, .flush = NULL, .poll = xgi_fence_poll, .needed_flush = NULL, .wait = NULL }; #endif /* XGI_HAVE_FENCE */