/* * Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved. * Copyright 2005 Stephane Marchesin * * The Weather Channel (TM) funded Tungsten Graphics to develop the * initial release of the Radeon 8500 driver under the XFree86 license. * This notice must be preserved. * * 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, sublicense, * 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 NONINFRINGEMENT. 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: * Keith Whitwell */ #include "drmP.h" #include "drm.h" #include "drm_sarea.h" #include "nouveau_drv.h" static struct mem_block *split_block(struct mem_block *p, uint64_t start, uint64_t size, struct drm_file *file_priv) { /* Maybe cut off the start of an existing block */ if (start > p->start) { struct mem_block *newblock = drm_alloc(sizeof(*newblock), DRM_MEM_BUFS); if (!newblock) goto out; newblock->start = start; newblock->size = p->size - (start - p->start); newblock->file_priv = NULL; newblock->next = p->next; newblock->prev = p; p->next->prev = newblock; p->next = newblock; p->size -= newblock->size; p = newblock; } /* Maybe cut off the end of an existing block */ if (size < p->size) { struct mem_block *newblock = drm_alloc(sizeof(*newblock), DRM_MEM_BUFS); if (!newblock) goto out; newblock->start = start + size; newblock->size = p->size - size; newblock->file_priv = NULL; newblock->next = p->next; newblock->prev = p; p->next->prev = newblock; p->next = newblock; p->size = size; } out: /* Our block is in the middle */ p->file_priv = file_priv; return p; } struct mem_block *nouveau_mem_alloc_block(struct mem_block *heap, uint64_t size, int align2, struct drm_file *file_priv) { struct mem_block *p; uint64_t mask = (1 << align2) - 1; if (!heap) return NULL; list_for_each(p, heap) { uint64_t start = (p->start + mask) & ~mask; if (p->file_priv == 0 && start + size <= p->start + p->size) return split_block(p, start, size, file_priv); } return NULL; } static struct mem_block *find_block(struct mem_block *heap, uint64_t start) { struct mem_block *p; list_for_each(p, heap) if (p->start == start) return p; return NULL; } void nouveau_mem_free_block(struct mem_block *p) { p->file_priv = NULL; /* Assumes a single contiguous range. Needs a special file_priv in * 'heap' to stop it being subsumed. */ if (p->next->file_priv == 0) { struct mem_block *q = p->next; p->size += q->size; p->next = q->next; p->next->prev = p; drm_free(q, sizeof(*q), DRM_MEM_BUFS); } if (p->prev->file_priv == 0) { struct mem_block *q = p->prev; q->size += p->size; q->next = p->next; q->next->prev = q; drm_free(p, sizeof(*q), DRM_MEM_BUFS); } } /* Initialize. How to check for an uninitialized heap? */ int nouveau_mem_init_heap(struct mem_block **heap, uint64_t start, uint64_t size) { struct mem_block *blocks = drm_alloc(sizeof(*blocks), DRM_MEM_BUFS); if (!blocks) return -ENOMEM; *heap = drm_alloc(sizeof(**heap), DRM_MEM_BUFS); if (!*heap) { drm_free(blocks, sizeof(*blocks), DRM_MEM_BUFS); return -ENOMEM; } blocks->start = start; blocks->size = size; blocks->file_priv = NULL; blocks->next = blocks->prev = *heap; memset(*heap, 0, sizeof(**heap)); (*heap)->file_priv = (struct drm_file *) - 1; (*heap)->next = (*heap)->prev = blocks; return 0; } /* * Free all blocks associated with the releasing file_priv */ void nouveau_mem_release(struct drm_file *file_priv, struct mem_block *heap) { struct mem_block *p; if (!heap || !heap->next) return; list_for_each(p, heap) { if (p->file_priv == file_priv) p->file_priv = NULL; } /* Assumes a single contiguous range. Needs a special file_priv in * 'heap' to stop it being subsumed. */ list_for_each(p, heap) { while ((p->file_priv == 0) && (p->next->file_priv == 0) && (p->next!=heap)) { struct mem_block *q = p->next; p->size += q->size; p->next = q->next; p->next->prev = p; drm_free(q, sizeof(*q), DRM_MEM_DRIVER); } } } /* * Cleanup everything */ void nouveau_mem_takedown(struct mem_block **heap) { struct mem_block *p; if (!*heap) return; for (p = (*heap)->next; p != *heap;) { struct mem_block *q = p; p = p->next; drm_free(q, sizeof(*q), DRM_MEM_DRIVER); } drm_free(*heap, sizeof(**heap), DRM_MEM_DRIVER); *heap = NULL; } void nouveau_mem_close(struct drm_device *dev) { struct drm_nouveau_private *dev_priv = dev->dev_private; nouveau_mem_takedown(&dev_priv->agp_heap); nouveau_mem_takedown(&dev_priv->fb_heap); if (dev_priv->pci_heap) nouveau_mem_takedown(&dev_priv->pci_heap); } /* returns the amount of FB ram in bytes */ uint64_t nouveau_mem_fb_amount(struct drm_device *dev) { struct drm_nouveau_private *dev_priv=dev->dev_private; switch(dev_priv->card_type) { case NV_03: switch(NV_READ(NV03_BOOT_0)&NV03_BOOT_0_RAM_AMOUNT) { case NV03_BOOT_0_RAM_AMOUNT_8MB: case NV03_BOOT_0_RAM_AMOUNT_8MB_SDRAM: return 8*1024*1024; case NV03_BOOT_0_RAM_AMOUNT_4MB: return 4*1024*1024; case NV03_BOOT_0_RAM_AMOUNT_2MB: return 2*1024*1024; } break; case NV_04: case NV_05: if (NV_READ(NV03_BOOT_0) & 0x00000100) { return (((NV_READ(NV03_BOOT_0) >> 12) & 0xf)*2+2)*1024*1024; } else switch(NV_READ(NV03_BOOT_0)&NV03_BOOT_0_RAM_AMOUNT) { case NV04_BOOT_0_RAM_AMOUNT_32MB: return 32*1024*1024; case NV04_BOOT_0_RAM_AMOUNT_16MB: return 16*1024*1024; case NV04_BOOT_0_RAM_AMOUNT_8MB: return 8*1024*1024; case NV04_BOOT_0_RAM_AMOUNT_4MB: return 4*1024*1024; } break; case NV_10: case NV_11: case NV_17: case NV_20: case NV_30: case NV_40: case NV_44: case NV_50: default: // XXX won't work on BSD because of pci_read_config_dword if (dev_priv->flags&NV_NFORCE) { uint32_t mem; pci_read_config_dword(dev->pdev, 0x7C, &mem); * 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, sublicense, 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 NONINFRINGEMENT. * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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. * */ #include "drmP.h" #include "drm.h" #include "nouveau_drv.h" #include "nouveau_dma.h" static int nouveau_fence_has_irq(struct drm_device *dev, uint32_t class, uint32_t flags) { struct drm_nouveau_private *dev_priv = dev->dev_private; DRM_DEBUG("class=%d, flags=0x%08x\n", class, flags); /* DRM's channel always uses IRQs to signal fences */ if (class == dev_priv->channel.chan->id) return 1; /* Other channels don't use IRQs at all yet */ return 0; } static int nouveau_fence_emit(struct drm_device *dev, uint32_t class, uint32_t flags, uint32_t *breadcrumb, uint32_t *native_type) { struct drm_nouveau_private *dev_priv = dev->dev_private; struct nouveau_channel *chan = dev_priv->fifos[class]; struct nouveau_drm_channel *dchan = &dev_priv->channel; DRM_DEBUG("class=%d, flags=0x%08x\n", class, flags); /* We can't emit fences on client channels, update sequence number * and userspace will emit the fence */ *breadcrumb = ++chan->next_sequence; *native_type = DRM_FENCE_TYPE_EXE; if (chan != dchan->chan) { DRM_DEBUG("user fence 0x%08x\n", *breadcrumb); return 0; } DRM_DEBUG("emit 0x%08x\n", *breadcrumb); BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_SET_REF, 1); OUT_RING (*breadcrumb); BEGIN_RING(NvSubM2MF, 0x0150, 1); OUT_RING (0); FIRE_RING (); return 0; } static void nouveau_fence_poll(struct drm_device *dev, uint32_t class, uint32_t waiting_types) { struct drm_nouveau_private *dev_priv = dev->dev_private; struct drm_fence_class_manager *fc = &dev->fm.fence_class[class]; struct nouveau_channel *chan = dev_priv->fifos[class]; DRM_DEBUG("class=%d\n", class); DRM_DEBUG("pending: 0x%08x 0x%08x\n", waiting_types, fc->waiting_types); if (waiting_types & DRM_FENCE_TYPE_EXE) { uint32_t sequence = NV_READ(chan->ref_cnt); DRM_DEBUG("got 0x%08x\n", sequence); drm_fence_handler(dev, class, sequence, waiting_types, 0); } } void nouveau_fence_handler(struct drm_device *dev, int channel) { struct drm_fence_manager *fm = &dev->fm; struct drm_fence_class_manager *fc = &fm->fence_class[channel]; DRM_DEBUG("class=%d\n", channel); write_lock(&fm->lock); nouveau_fence_poll(dev, channel, fc->waiting_types); write_unlock(&fm->lock); } struct drm_fence_driver nouveau_fence_driver = { .num_classes = 8, .wrap_diff = (1 << 30), .flush_diff = (1 << 29), .sequence_mask = 0xffffffffU, .has_irq = nouveau_fence_has_irq, .emit = nouveau_fence_emit, .flush = NULL, .poll = nouveau_fence_poll, .needed_flush = NULL, .wait = NULL };
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-25 10:04:46 +0000