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

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Diffstat (limited to 'shared-core')

0 files changed, 0 insertions, 0 deletions

/* * 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 <keith@tungstengraphics.com> */ #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); } /*XXX won't work on BSD because of pci_read_config_dword */ static uint32_t nouveau_mem_fb_amount_igp(struct drm_device *dev) { #if defined(LINUX) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)) struct drm_nouveau_private *dev_priv = dev->dev_private; struct pci_dev *bridge; uint32_t mem; bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0,1)); if (!bridge) { DRM_ERROR("no bridge device\n"); return 0; } if (dev_priv->flags&NV_NFORCE) { pci_read_config_dword(bridge, 0x7C, &mem); return (uint64_t)(((mem >> 6) & 31) + 1)*1024*1024; } else if(dev_priv->flags&NV_NFORCE2) { pci_read_config_dword(bridge, 0x84, &mem); return (uint64_t)(((mem >> 4) & 127) + 1)*1024*1024; } DRM_ERROR("impossible!\n"); #else DRM_ERROR("Linux kernel >= 2.6.19 required to check for igp memory amount\n"); #endif return 0; } /* 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: if (dev_priv->flags & (NV_NFORCE | NV_NFORCE2)) { return nouveau_mem_fb_amount_igp(dev); } else { uint64_t mem; mem = (NV_READ(NV04_FIFO_DATA) & NV10_FIFO_DATA_RAM_AMOUNT_MB_MASK) >> NV10_FIFO_DATA_RAM_AMOUNT_MB_SHIFT; return mem*1024*1024; } break; } DRM_ERROR("Unable to detect video ram size. Please report your setup to " DRIVER_EMAIL "\n"); return 0; } static int nouveau_mem_init_agp(struct drm_device *dev) { struct drm_nouveau_private *dev_priv = dev->dev_private; struct drm_agp_info info; struct drm_agp_mode mode; struct drm_agp_buffer agp_req; struct drm_agp_binding bind_req; int ret; ret = drm_agp_acquire(dev); if (ret) { DRM_ERROR("Unable to acquire AGP: %d\n", ret); return ret; } ret = drm_agp_info(dev, &info); if (ret) { DRM_ERROR("Unable to get AGP info: %d\n", ret); return ret; } /* see agp.h for the AGPSTAT_* modes available */ mode.mode = info.mode; ret = drm_agp_enable(dev, mode); if (ret) { DRM_ERROR("Unable to enable AGP: %d\n", ret); return ret; } agp_req.size = info.aperture_size; agp_req.type = 0; ret = drm_agp_alloc(dev, &agp_req); if (ret) { DRM_ERROR("Unable to alloc AGP: %d\n", ret); return ret; } bind_req.handle = agp_req.handle; bind_req.offset = 0; ret = drm_agp_bind(dev, &bind_req); if (ret) { DRM_ERROR("Unable to bind AGP: %d\n", ret); return ret; } dev_priv->gart_info.type = NOUVEAU_GART_AGP; dev_priv->gart_info.aper_base = info.aperture_base; dev_priv->gart_info.aper_size = info.aperture_size; return 0; } int nouveau_mem_init(struct drm_device *dev) { struct drm_nouveau_private *dev_priv = dev->dev_private; uint32_t fb_size; int ret = 0; dev_priv->agp_heap = dev_priv->pci_heap = dev_priv->fb_heap = NULL; dev_priv->fb_phys = 0; dev_priv->gart_info.type = NOUVEAU_GART_NONE; /* setup a mtrr over the FB */ dev_priv->fb_mtrr = drm_mtrr_add(drm_get_resource_start(dev, 1), nouveau_mem_fb_amount(dev), DRM_MTRR_WC); /* Init FB */ dev_priv->fb_phys=drm_get_resource_start(dev,1); fb_size = nouveau_mem_fb_amount(dev); /* On at least NV40, RAMIN is actually at the end of vram. * We don't want to allocate this... */ if (dev_priv->card_type >= NV_40) fb_size -= dev_priv->ramin_rsvd_vram; dev_priv->fb_available_size = fb_size; DRM_DEBUG("Available VRAM: %dKiB\n", fb_size>>10); if (fb_size>256*1024*1024) { /* On cards with > 256Mb, you can't map everything. * So we create a second FB heap for that type of memory */ if (nouveau_mem_init_heap(&dev_priv->fb_heap, 0, 256*1024*1024)) return -ENOMEM; if (nouveau_mem_init_heap(&dev_priv->fb_nomap_heap, 256*1024*1024, fb_size-256*1024*1024)) return -ENOMEM; } else { if (nouveau_mem_init_heap(&dev_priv->fb_heap, 0, fb_size)) return -ENOMEM; dev_priv->fb_nomap_heap=NULL; } /* Init AGP / NV50 PCIEGART */ if (drm_device_is_agp(dev) && dev->agp) { if ((ret = nouveau_mem_init_agp(dev))) DRM_ERROR("Error initialising AGP: %d\n", ret); } /*Note: this is *not* just NV50 code, but only used on NV50 for now */ if (dev_priv->gart_info.type == NOUVEAU_GART_NONE && dev_priv->card_type >= NV_50) { ret = nouveau_sgdma_init(dev); if (!ret) { ret = nouveau_sgdma_nottm_hack_init(dev); if (ret) nouveau_sgdma_takedown(dev); } if (ret) DRM_ERROR("Error initialising SG DMA: %d\n", ret); } if (dev_priv->gart_info.type != NOUVEAU_GART_NONE) { if (nouveau_mem_init_heap(&dev_priv->agp_heap, 0, dev_priv->gart_info.aper_size)) { if (dev_priv->gart_info.type == NOUVEAU_GART_SGDMA) { nouveau_sgdma_nottm_hack_takedown(dev); nouveau_sgdma_takedown(dev); } } } /* NV04-NV40 PCIEGART */ if (!dev_priv->agp_heap && dev_priv->card_type < NV_50) { struct drm_scatter_gather sgreq; DRM_DEBUG("Allocating sg memory for PCI DMA\n"); sgreq.size = 16 << 20; //16MB of PCI scatter-gather zone if (drm_sg_alloc(dev, &sgreq)) { DRM_ERROR("Unable to allocate %dMB of scatter-gather" " pages for PCI DMA!",sgreq.size>>20); } else { if (nouveau_mem_init_heap(&dev_priv->pci_heap, 0, dev->sg->pages * PAGE_SIZE)) { DRM_ERROR("Unable to initialize pci_heap!"); } } } return 0; } struct mem_block* nouveau_mem_alloc(struct drm_device *dev, int alignment, uint64_t size, int flags, struct drm_file *file_priv) { struct mem_block *block; int type; struct drm_nouveau_private *dev_priv = dev->dev_private; /* * Make things easier on ourselves: all allocations are page-aligned. * We need that to map allocated regions into the user space */ if (alignment < PAGE_SHIFT) alignment = PAGE_SHIFT; /* * Warn about 0 sized allocations, but let it go through. It'll return 1 page */ if (size == 0) DRM_INFO("warning : 0 byte allocation\n"); /* * Keep alloc size a multiple of the page size to keep drm_addmap() happy */ if (size & (~PAGE_MASK)) size = ((size/PAGE_SIZE) + 1) * PAGE_SIZE; #define NOUVEAU_MEM_ALLOC_AGP {\ type=NOUVEAU_MEM_AGP;\ block = nouveau_mem_alloc_block(dev_priv->agp_heap, size,\ alignment, file_priv); \ if (block) goto alloc_ok;\ } #define NOUVEAU_MEM_ALLOC_PCI {\ type = NOUVEAU_MEM_PCI;\ block = nouveau_mem_alloc_block(dev_priv->pci_heap, size, \ alignment, file_priv); \ if ( block ) goto alloc_ok;\ } #define NOUVEAU_MEM_ALLOC_FB {\ type=NOUVEAU_MEM_FB;\ if (!(flags&NOUVEAU_MEM_MAPPED)) {\ block = nouveau_mem_alloc_block(dev_priv->fb_nomap_heap,\ size, alignment, \ file_priv); \ if (block) goto alloc_ok;\ }\ block = nouveau_mem_alloc_block(dev_priv->fb_heap, size,\ alignment, file_priv);\ if (block) goto alloc_ok;\ } if (flags&NOUVEAU_MEM_FB) NOUVEAU_MEM_ALLOC_FB if (flags&NOUVEAU_MEM_AGP) NOUVEAU_MEM_ALLOC_AGP if (flags&NOUVEAU_MEM_PCI) NOUVEAU_MEM_ALLOC_PCI if (flags&NOUVEAU_MEM_FB_ACCEPTABLE) NOUVEAU_MEM_ALLOC_FB if (flags&NOUVEAU_MEM_AGP_ACCEPTABLE) NOUVEAU_MEM_ALLOC_AGP if (flags&NOUVEAU_MEM_PCI_ACCEPTABLE) NOUVEAU_MEM_ALLOC_PCI return NULL; alloc_ok: block->flags=type; if (flags&NOUVEAU_MEM_MAPPED) { struct drm_map_list *entry; int ret = 0; block->flags|=NOUVEAU_MEM_MAPPED; if (type == NOUVEAU_MEM_AGP) { if (dev_priv->gart_info.type != NOUVEAU_GART_SGDMA) ret = drm_addmap(dev, block->start, block->size, _DRM_AGP, 0, &block->map); else ret = drm_addmap(dev, block->start, block->size, _DRM_SCATTER_GATHER, 0, &block->map); } else if (type == NOUVEAU_MEM_FB) ret = drm_addmap(dev, block->start + dev_priv->fb_phys, block->size, _DRM_FRAME_BUFFER, 0, &block->map); else if (type == NOUVEAU_MEM_PCI) ret = drm_addmap(dev, block->start, block->size, _DRM_SCATTER_GATHER, 0, &block->map); if (ret) { nouveau_mem_free_block(block); return NULL; } entry = drm_find_matching_map(dev, block->map); if (!entry) { nouveau_mem_free_block(block); return NULL; } block->map_handle = entry->user_token; } DRM_DEBUG("allocated 0x%llx type=0x%08x\n", block->start, block->flags); return block; } void nouveau_mem_free(struct drm_device* dev, struct mem_block* block) { DRM_DEBUG("freeing 0x%llx type=0x%08x\n", block->start, block->flags); if (block->flags&NOUVEAU_MEM_MAPPED) drm_rmmap(dev, block->map); nouveau_mem_free_block(block); } /* * Ioctls */ int nouveau_ioctl_mem_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_nouveau_mem_alloc *alloc = data; struct mem_block *block; NOUVEAU_CHECK_INITIALISED_WITH_RETURN; block=nouveau_mem_alloc(dev, alloc->alignment, alloc->size, alloc->flags, file_priv); if (!block) return -ENOMEM; alloc->map_handle=block->map_handle; alloc->offset=block->start; alloc->flags=block->flags; return 0; } int nouveau_ioctl_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_nouveau_private *dev_priv = dev->dev_private; struct drm_nouveau_mem_free *memfree = data; struct mem_block *block; NOUVEAU_CHECK_INITIALISED_WITH_RETURN; block=NULL; if (memfree->flags & NOUVEAU_MEM_FB) block = find_block(dev_priv->fb_heap, memfree->offset); else if (memfree->flags & NOUVEAU_MEM_AGP) block = find_block(dev_priv->agp_heap, memfree->offset); else if (memfree->flags & NOUVEAU_MEM_PCI) block = find_block(dev_priv->pci_heap, memfree->offset); if (!block) return -EFAULT; if (block->file_priv != file_priv) return -EPERM; nouveau_mem_free(dev, block); return 0; }


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