| /* |
| * 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, |
| DRMFILE filp) |
| { |
| /* 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->filp = 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->filp = 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->filp = filp; |
| return p; |
| } |
| |
| struct mem_block *nouveau_mem_alloc_block(struct mem_block *heap, uint64_t size, |
| int align2, DRMFILE filp) |
| { |
| 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->filp == 0 && start + size <= p->start + p->size) |
| return split_block(p, start, size, filp); |
| } |
| |
| 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->filp = NULL; |
| |
| /* Assumes a single contiguous range. Needs a special filp in |
| * 'heap' to stop it being subsumed. |
| */ |
| if (p->next->filp == 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->filp == 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 DRM_ERR(ENOMEM); |
| |
| *heap = drm_alloc(sizeof(**heap), DRM_MEM_BUFS); |
| if (!*heap) { |
| drm_free(blocks, sizeof(*blocks), DRM_MEM_BUFS); |
| return DRM_ERR(ENOMEM); |
| } |
| |
| blocks->start = start; |
| blocks->size = size; |
| blocks->filp = NULL; |
| blocks->next = blocks->prev = *heap; |
| |
| memset(*heap, 0, sizeof(**heap)); |
| (*heap)->filp = (DRMFILE) - 1; |
| (*heap)->next = (*heap)->prev = blocks; |
| return 0; |
| } |
| |
| /* |
| * Free all blocks associated with the releasing filp |
| */ |
| void nouveau_mem_release(DRMFILE filp, struct mem_block *heap) |
| { |
| struct mem_block *p; |
| |
| if (!heap || !heap->next) |
| return; |
| |
| list_for_each(p, heap) { |
| if (p->filp == filp) |
| p->filp = NULL; |
| } |
| |
| /* Assumes a single contiguous range. Needs a special filp in |
| * 'heap' to stop it being subsumed. |
| */ |
| list_for_each(p, heap) { |
| while ((p->filp == 0) && (p->next->filp == 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) |
| { |
| drm_nouveau_private_t *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) |
| { |
| drm_nouveau_private_t *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_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); |
| return (uint64_t)(((mem >> 6) & 31) + 1)*1024*1024; |
| } else if(dev_priv->flags&NV_NFORCE2) { |
| uint32_t mem; |
| pci_read_config_dword(dev->pdev, 0x84, &mem); |
| return (uint64_t)(((mem >> 4) & 127) + 1)*1024*1024; |
| } 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; |
| } |
| |
| |
| |
| int nouveau_mem_init(struct drm_device *dev) |
| { |
| drm_nouveau_private_t *dev_priv = dev->dev_private; |
| uint32_t fb_size; |
| drm_scatter_gather_t sgreq; |
| dev_priv->agp_phys=0; |
| dev_priv->fb_phys=0; |
| sgreq . size = 4 << 20; //4MB of PCI scatter-gather zone |
| |
| /* init AGP */ |
| dev_priv->agp_heap=NULL; |
| if (drm_device_is_agp(dev)) |
| { |
| int err; |
| drm_agp_info_t info; |
| drm_agp_mode_t mode; |
| drm_agp_buffer_t agp_req; |
| drm_agp_binding_t bind_req; |
| |
| err = drm_agp_acquire(dev); |
| if (err) { |
| DRM_ERROR("Unable to acquire AGP: %d\n", err); |
| goto no_agp; |
| } |
| |
| err = drm_agp_info(dev, &info); |
| if (err) { |
| DRM_ERROR("Unable to get AGP info: %d\n", err); |
| goto no_agp; |
| } |
| |
| /* see agp.h for the AGPSTAT_* modes available */ |
| mode.mode = info.mode; |
| err = drm_agp_enable(dev, mode); |
| if (err) { |
| DRM_ERROR("Unable to enable AGP: %d\n", err); |
| goto no_agp; |
| } |
| |
| agp_req.size = info.aperture_size; |
| agp_req.type = 0; |
| err = drm_agp_alloc(dev, &agp_req); |
| if (err) { |
| DRM_ERROR("Unable to alloc AGP: %d\n", err); |
| goto no_agp; |
| } |
| |
| bind_req.handle = agp_req.handle; |
| bind_req.offset = 0; |
| err = drm_agp_bind(dev, &bind_req); |
| if (err) { |
| DRM_ERROR("Unable to bind AGP: %d\n", err); |
| goto no_agp; |
| } |
| |
| if (nouveau_mem_init_heap(&dev_priv->agp_heap, |
| info.aperture_base, |
| info.aperture_size)) |
| goto no_agp; |
| |
| dev_priv->agp_phys = info.aperture_base; |
| dev_priv->agp_available_size = info.aperture_size; |
| goto have_agp; |
| } |
| |
| no_agp: |
| |
| if ( dev_priv->card_type >= NV_50 ) goto no_pci; |
| |
| dev_priv->pci_heap = NULL; |
| DRM_DEBUG("Allocating sg memory for PCI DMA\n"); |
| if ( drm_sg_alloc(dev, &sgreq) ) |
| { |
| DRM_ERROR("Unable to allocate 4MB of scatter-gather pages for PCI DMA!"); |
| goto no_pci; |
| } |
| |
| if ( nouveau_mem_init_heap(&dev_priv->pci_heap, (uint64_t) dev->sg->virtual, dev->sg->pages * PAGE_SIZE)) |
| { |
| DRM_ERROR("Unable to initialize pci_heap!"); |
| goto no_pci; |
| } |
| |
| no_pci: |
| have_agp: |
| /* 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, |
| drm_get_resource_start(dev,1), |
| 256*1024*1024)) |
| return DRM_ERR(ENOMEM); |
| if (nouveau_mem_init_heap(&dev_priv->fb_nomap_heap, |
| drm_get_resource_start(dev,1) + |
| 256*1024*1024, |
| fb_size-256*1024*1024)) |
| return DRM_ERR(ENOMEM); |
| } else { |
| if (nouveau_mem_init_heap(&dev_priv->fb_heap, |
| drm_get_resource_start(dev,1), |
| fb_size)) |
| return DRM_ERR(ENOMEM); |
| dev_priv->fb_nomap_heap=NULL; |
| } |
| |
| return 0; |
| } |
| |
| struct mem_block* nouveau_mem_alloc(struct drm_device *dev, int alignment, uint64_t size, int flags, DRMFILE filp) |
| { |
| struct mem_block *block; |
| int type; |
| drm_nouveau_private_t *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, filp);\ |
| 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, filp);\ |
| 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, filp); \ |
| if (block) goto alloc_ok;\ |
| }\ |
| block = nouveau_mem_alloc_block(dev_priv->fb_heap, size,\ |
| alignment, filp);\ |
| 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) |
| { |
| int ret = 0; |
| block->flags|=NOUVEAU_MEM_MAPPED; |
| |
| if (type == NOUVEAU_MEM_AGP) |
| ret = drm_addmap(dev, block->start - dev->agp->base, block->size, |
| _DRM_AGP, 0, &block->map); |
| else if (type == NOUVEAU_MEM_FB) |
| ret = drm_addmap(dev, block->start, block->size, |
| _DRM_FRAME_BUFFER, 0, &block->map); |
| else if (type == NOUVEAU_MEM_PCI) |
| ret = drm_addmap(dev, block->start - (unsigned long int)dev->sg->virtual, block->size, |
| _DRM_SCATTER_GATHER, 0, &block->map); |
| |
| if (ret) { |
| nouveau_mem_free_block(block); |
| return NULL; |
| } |
| } |
| |
| DRM_INFO("allocated 0x%llx\n", block->start); |
| return block; |
| } |
| |
| void nouveau_mem_free(struct drm_device* dev, struct mem_block* block) |
| { |
| DRM_INFO("freeing 0x%llx\n", block->start); |
| if (block->flags&NOUVEAU_MEM_MAPPED) |
| drm_rmmap(dev, block->map); |
| nouveau_mem_free_block(block); |
| } |
| |
| /* |
| * Ioctls |
| */ |
| |
| int nouveau_ioctl_mem_alloc(DRM_IOCTL_ARGS) |
| { |
| DRM_DEVICE; |
| drm_nouveau_private_t *dev_priv = dev->dev_private; |
| drm_nouveau_mem_alloc_t alloc; |
| struct mem_block *block; |
| |
| if (!dev_priv) { |
| DRM_ERROR("%s called with no initialization\n", __FUNCTION__); |
| return DRM_ERR(EINVAL); |
| } |
| |
| DRM_COPY_FROM_USER_IOCTL(alloc, (drm_nouveau_mem_alloc_t __user *) data, |
| sizeof(alloc)); |
| |
| block=nouveau_mem_alloc(dev, alloc.alignment, alloc.size, alloc.flags, filp); |
| if (!block) |
| return DRM_ERR(ENOMEM); |
| alloc.region_offset=block->start; |
| alloc.flags=block->flags; |
| |
| DRM_COPY_TO_USER_IOCTL((drm_nouveau_mem_alloc_t __user *) data, alloc, sizeof(alloc)); |
| |
| return 0; |
| } |
| |
| int nouveau_ioctl_mem_free(DRM_IOCTL_ARGS) |
| { |
| DRM_DEVICE; |
| drm_nouveau_private_t *dev_priv = dev->dev_private; |
| drm_nouveau_mem_free_t memfree; |
| struct mem_block *block; |
| |
| DRM_COPY_FROM_USER_IOCTL(memfree, (drm_nouveau_mem_free_t __user *) data, |
| sizeof(memfree)); |
| |
| block=NULL; |
| if (memfree.flags&NOUVEAU_MEM_FB) |
| block = find_block(dev_priv->fb_heap, memfree.region_offset); |
| else if (memfree.flags&NOUVEAU_MEM_AGP) |
| block = find_block(dev_priv->agp_heap, memfree.region_offset); |
| if (!block) |
| return DRM_ERR(EFAULT); |
| if (block->filp != filp) |
| return DRM_ERR(EPERM); |
| |
| nouveau_mem_free(dev, block); |
| return 0; |
| } |
| |
| |