From d399dbcd569a66f5bf4863ffa2aab95fa8ebd5fc Mon Sep 17 00:00:00 2001 From: Doug Rabson Date: Tue, 13 Jun 2000 17:38:09 +0000 Subject: Merged bsd-1-0-1 --- bsd/mga/mga_bufs.c | 604 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 604 insertions(+) create mode 100644 bsd/mga/mga_bufs.c (limited to 'bsd/mga/mga_bufs.c') diff --git a/bsd/mga/mga_bufs.c b/bsd/mga/mga_bufs.c new file mode 100644 index 00000000..4ae05181 --- /dev/null +++ b/bsd/mga/mga_bufs.c @@ -0,0 +1,604 @@ +/* mga_bufs.c -- IOCTLs to manage buffers + * Created: Thu Jan 6 01:47:26 2000 by jhartmann@precisioninsight.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. + * 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 + * PRECISION INSIGHT 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. + * + * Authors: Rickard E. (Rik) Faith + * Jeff Hartmann + * + * + */ + +#define __NO_VERSION__ +#include "drmP.h" +#include "mga_drv.h" +#include +#include +#include +#include +#include + + +static int +mga_addbufs_agp(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_device_dma_t *dma = dev->dma; + drm_buf_desc_t request; + drm_buf_entry_t *entry; + drm_buf_t *buf; + unsigned long offset; + unsigned long agp_offset; + int count; + int order; + int size; + int alignment; + int page_order; + int total; + int byte_count; + int i; + + if (!dma) return EINVAL; + + request = *(drm_buf_desc_t *) data; + + count = request.count; + order = drm_order(request.size); + size = 1 << order; + agp_offset = request.agp_start; + alignment = (request.flags & _DRM_PAGE_ALIGN) ? round_page(size) :size; + page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; + total = PAGE_SIZE << page_order; + byte_count = 0; + + DRM_DEBUG("count: %d\n", count); + DRM_DEBUG("order: %d\n", order); + DRM_DEBUG("size: %d\n", size); + DRM_DEBUG("agp_offset: %ld\n", agp_offset); + DRM_DEBUG("alignment: %d\n", alignment); + DRM_DEBUG("page_order: %d\n", page_order); + DRM_DEBUG("total: %d\n", total); + DRM_DEBUG("byte_count: %d\n", byte_count); + + if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return EINVAL; + if (dev->queue_count) return EBUSY; /* Not while in use */ + simple_lock(&dev->count_lock); + if (dev->buf_use) { + simple_unlock(&dev->count_lock); + return EBUSY; + } + atomic_inc(&dev->buf_alloc); + simple_unlock(&dev->count_lock); + + lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc); + entry = &dma->bufs[order]; + if (entry->buf_count) { + lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc); + atomic_dec(&dev->buf_alloc); + return ENOMEM; /* May only call once for each order */ + } + + entry->buflist = drm_alloc(count * sizeof(*entry->buflist), + DRM_MEM_BUFS); + if (!entry->buflist) { + lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc); + atomic_dec(&dev->buf_alloc); + return ENOMEM; + } + memset(entry->buflist, 0, count * sizeof(*entry->buflist)); + + entry->buf_size = size; + entry->page_order = page_order; + offset = 0; + + + while(entry->buf_count < count) { + buf = &entry->buflist[entry->buf_count]; + buf->idx = dma->buf_count + entry->buf_count; + buf->total = alignment; + buf->order = order; + buf->used = 0; + + DRM_DEBUG("offset : %ld\n", offset); + + buf->offset = offset; /* Hrm */ + buf->bus_address = dev->agp->base + agp_offset + offset; + buf->address = (void *)(agp_offset + offset + dev->agp->base); + buf->next = NULL; + buf->waiting = 0; + buf->pending = 0; + buf->dma_wait = 0; + buf->pid = 0; + + buf->dev_private = drm_alloc(sizeof(drm_mga_buf_priv_t), DRM_MEM_BUFS); + buf->dev_priv_size = sizeof(drm_mga_buf_priv_t); + +#if DRM_DMA_HISTOGRAM + timespecclear(&buf->time_queued); + timespecclear(&buf->time_dispatched); + timespecclear(&buf->time_completed); + timespecclear(&buf->time_freed); +#endif + offset = offset + alignment; + entry->buf_count++; + byte_count += PAGE_SIZE << page_order; + + DRM_DEBUG("buffer %d @ %p\n", + entry->buf_count, buf->address); + } + + dma->buflist = drm_realloc(dma->buflist, + dma->buf_count * sizeof(*dma->buflist), + (dma->buf_count + entry->buf_count) + * sizeof(*dma->buflist), + DRM_MEM_BUFS); + for (i = dma->buf_count; i < dma->buf_count + entry->buf_count; i++) + dma->buflist[i] = &entry->buflist[i - dma->buf_count]; + + dma->buf_count += entry->buf_count; + + DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count); + + dma->byte_count += byte_count; + + DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count); + + drm_freelist_create(&entry->freelist, entry->buf_count); + for (i = 0; i < entry->buf_count; i++) { + drm_freelist_put(dev, &entry->freelist, &entry->buflist[i]); + } + + lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc); + + request.count = entry->buf_count; + request.size = size; + + *(drm_buf_desc_t *) data = request; + + atomic_dec(&dev->buf_alloc); + + DRM_DEBUG("count: %d\n", count); + DRM_DEBUG("order: %d\n", order); + DRM_DEBUG("size: %d\n", size); + DRM_DEBUG("agp_offset: %ld\n", agp_offset); + DRM_DEBUG("alignment: %d\n", alignment); + DRM_DEBUG("page_order: %d\n", page_order); + DRM_DEBUG("total: %d\n", total); + DRM_DEBUG("byte_count: %d\n", byte_count); + + dma->flags = _DRM_DMA_USE_AGP; + + DRM_DEBUG("dma->flags : %x\n", dma->flags); + + return 0; +} + +static int +mga_addbufs_pci(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_device_dma_t *dma = dev->dma; + drm_buf_desc_t request; + int count; + int order; + int size; + int total; + int page_order; + drm_buf_entry_t *entry; + unsigned long page; + drm_buf_t *buf; + int alignment; + unsigned long offset; + int i; + int byte_count; + int page_count; + + if (!dma) return EINVAL; + + request = *(drm_buf_desc_t *) data; + + count = request.count; + order = drm_order(request.size); + size = 1 << order; + + DRM_DEBUG("count = %d, size = %d (%d), order = %d, queue_count = %d\n", + request.count, request.size, size, order, dev->queue_count); + + if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return EINVAL; + if (dev->queue_count) return EBUSY; /* Not while in use */ + + alignment = (request.flags & _DRM_PAGE_ALIGN) ? round_page(size) :size; + page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; + total = PAGE_SIZE << page_order; + + simple_lock(&dev->count_lock); + if (dev->buf_use) { + simple_unlock(&dev->count_lock); + return EBUSY; + } + atomic_inc(&dev->buf_alloc); + simple_unlock(&dev->count_lock); + + lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc); + entry = &dma->bufs[order]; + if (entry->buf_count) { + lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc); + atomic_dec(&dev->buf_alloc); + return ENOMEM; /* May only call once for each order */ + } + + entry->buflist = drm_alloc(count * sizeof(*entry->buflist), + DRM_MEM_BUFS); + if (!entry->buflist) { + lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc); + atomic_dec(&dev->buf_alloc); + return ENOMEM; + } + memset(entry->buflist, 0, count * sizeof(*entry->buflist)); + + entry->seglist = drm_alloc(count * sizeof(*entry->seglist), + DRM_MEM_SEGS); + if (!entry->seglist) { + drm_free(entry->buflist, + count * sizeof(*entry->buflist), + DRM_MEM_BUFS); + lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc); + atomic_dec(&dev->buf_alloc); + return ENOMEM; + } + memset(entry->seglist, 0, count * sizeof(*entry->seglist)); + + dma->pagelist = drm_realloc(dma->pagelist, + dma->page_count * sizeof(*dma->pagelist), + (dma->page_count + (count << page_order)) + * sizeof(*dma->pagelist), + DRM_MEM_PAGES); + DRM_DEBUG("pagelist: %d entries\n", + dma->page_count + (count << page_order)); + + + entry->buf_size = size; + entry->page_order = page_order; + byte_count = 0; + page_count = 0; + while (entry->buf_count < count) { + if (!(page = drm_alloc_pages(page_order, DRM_MEM_DMA))) break; + entry->seglist[entry->seg_count++] = page; + for (i = 0; i < (1 << page_order); i++) { + DRM_DEBUG("page %d @ 0x%08lx\n", + dma->page_count + page_count, + page + PAGE_SIZE * i); + dma->pagelist[dma->page_count + page_count++] + = page + PAGE_SIZE * i; + } + for (offset = 0; + offset + size <= total && entry->buf_count < count; + offset += alignment, ++entry->buf_count) { + buf = &entry->buflist[entry->buf_count]; + buf->idx = dma->buf_count + entry->buf_count; + buf->total = alignment; + buf->order = order; + buf->used = 0; + buf->offset = (dma->byte_count + byte_count + offset); + buf->address = (void *)(page + offset); + buf->next = NULL; + buf->waiting = 0; + buf->pending = 0; + buf->dma_wait = 0; + buf->pid = 0; +#if DRM_DMA_HISTOGRAM + timespecclear(&buf->time_queued); + timespecclear(&buf->time_dispatched); + timespecclear(&buf->time_completed); + timespecclear(&buf->time_freed); +#endif + DRM_DEBUG("buffer %d @ %p\n", + entry->buf_count, buf->address); + } + byte_count += PAGE_SIZE << page_order; + } + + dma->buflist = drm_realloc(dma->buflist, + dma->buf_count * sizeof(*dma->buflist), + (dma->buf_count + entry->buf_count) + * sizeof(*dma->buflist), + DRM_MEM_BUFS); + for (i = dma->buf_count; i < dma->buf_count + entry->buf_count; i++) + dma->buflist[i] = &entry->buflist[i - dma->buf_count]; + + dma->buf_count += entry->buf_count; + dma->seg_count += entry->seg_count; + dma->page_count += entry->seg_count << page_order; + dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order); + + drm_freelist_create(&entry->freelist, entry->buf_count); + for (i = 0; i < entry->buf_count; i++) { + drm_freelist_put(dev, &entry->freelist, &entry->buflist[i]); + } + + lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc); + + request.count = entry->buf_count; + request.size = size; + + *(drm_buf_desc_t *) data = request; + + atomic_dec(&dev->buf_alloc); + return 0; +} + +int +mga_addbufs(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_buf_desc_t request; + + request = *(drm_buf_desc_t *) data; + + if(request.flags & _DRM_AGP_BUFFER) + return mga_addbufs_agp(kdev, cmd, data, flags, p); + else + return mga_addbufs_pci(kdev, cmd, data, flags, p); +} + +int +mga_infobufs(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_device_dma_t *dma = dev->dma; + drm_buf_info_t request; + int i; + int count; + int error; + + if (!dma) return EINVAL; + + simple_lock(&dev->count_lock); + if (atomic_read(&dev->buf_alloc)) { + simple_unlock(&dev->count_lock); + return EBUSY; + } + ++dev->buf_use; /* Can't allocate more after this call */ + simple_unlock(&dev->count_lock); + + request = *(drm_buf_info_t *) data; + + for (i = 0, count = 0; i < DRM_MAX_ORDER+1; i++) { + if (dma->bufs[i].buf_count) ++count; + } + + DRM_DEBUG("count = %d\n", count); + + if (request.count >= count) { + for (i = 0, count = 0; i < DRM_MAX_ORDER+1; i++) { + if (dma->bufs[i].buf_count) { + error = copyout(&dma->bufs[i].buf_count, + &request.list[count].count, + sizeof(dma->bufs[0] + .buf_count)); + if (error) return error; + error = copyout(&dma->bufs[i].buf_size, + &request.list[count].size, + sizeof(dma->bufs[0] + .buf_size)); + if (error) return error; + error = copyout(&dma->bufs[i] + .freelist.low_mark, + &request.list[count].low_mark, + sizeof(dma->bufs[0] + .freelist.low_mark)); + if (error) return error; + error = copyout(&dma->bufs[i] + .freelist.high_mark, + &request.list[count].high_mark, + sizeof(dma->bufs[0] + .freelist.high_mark)); + if (error) return error; + DRM_DEBUG("%d %d %d %d %d\n", + i, + dma->bufs[i].buf_count, + dma->bufs[i].buf_size, + dma->bufs[i].freelist.low_mark, + dma->bufs[i].freelist.high_mark); + ++count; + } + } + } + request.count = count; + + *(drm_buf_info_t *) data = request; + + return 0; +} + +int +mga_markbufs(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_device_dma_t *dma = dev->dma; + drm_buf_desc_t request; + int order; + drm_buf_entry_t *entry; + + if (!dma) return EINVAL; + + request = *(drm_buf_desc_t *) data; + + DRM_DEBUG("%d, %d, %d\n", + request.size, request.low_mark, request.high_mark); + order = drm_order(request.size); + if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return EINVAL; + entry = &dma->bufs[order]; + + if (request.low_mark < 0 || request.low_mark > entry->buf_count) + return EINVAL; + if (request.high_mark < 0 || request.high_mark > entry->buf_count) + return EINVAL; + + entry->freelist.low_mark = request.low_mark; + entry->freelist.high_mark = request.high_mark; + + return 0; +} + +int +mga_freebufs(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_device_dma_t *dma = dev->dma; + drm_buf_free_t request; + int i; + int error; + int idx; + drm_buf_t *buf; + + if (!dma) return EINVAL; + + request = *(drm_buf_free_t *) data; + + DRM_DEBUG("%d\n", request.count); + for (i = 0; i < request.count; i++) { + error = copyin(&request.list[i], + &idx, + sizeof(idx)); + if (error) return error; + if (idx < 0 || idx >= dma->buf_count) { + DRM_ERROR("Index %d (of %d max)\n", + idx, dma->buf_count - 1); + return EINVAL; + } + buf = dma->buflist[idx]; + if (buf->pid != p->p_pid) { + DRM_ERROR("Process %d freeing buffer owned by %d\n", + p->p_pid, buf->pid); + return EINVAL; + } + drm_free_buffer(dev, buf); + } + + return 0; +} + +int +mga_mapbufs(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_device_dma_t *dma = dev->dma; + int retcode = 0; + const int zero = 0; + vm_offset_t virtual; + vm_offset_t address; + drm_buf_map_t request; + int i; + + if (!dma) return EINVAL; + + DRM_DEBUG("\n"); + + simple_lock(&dev->count_lock); + if (atomic_read(&dev->buf_alloc)) { + simple_unlock(&dev->count_lock); + DRM_DEBUG("Busy\n"); + return EBUSY; + } + ++dev->buf_use; /* Can't allocate more after this call */ + simple_unlock(&dev->count_lock); + + request = *(drm_buf_map_t *) data; + + DRM_DEBUG("mga_mapbufs\n"); + DRM_DEBUG("dma->flags : %x\n", dma->flags); + + if (request.count >= dma->buf_count) { + if(dma->flags & _DRM_DMA_USE_AGP) { + drm_mga_private_t *dev_priv = dev->dev_private; + drm_map_t *map = NULL; + + map = dev->maplist[dev_priv->buffer_map_idx]; + if (!map) { + DRM_DEBUG("map is null\n"); + retcode = EINVAL; + goto done; + } + + DRM_DEBUG("map->offset : %lx\n", map->offset); + DRM_DEBUG("map->size : %lx\n", map->size); + DRM_DEBUG("map->type : %d\n", map->type); + DRM_DEBUG("map->flags : %x\n", map->flags); + DRM_DEBUG("map->handle : %p\n", map->handle); + DRM_DEBUG("map->mtrr : %d\n", map->mtrr); + virtual = 0; + retcode = vm_mmap(&p->p_vmspace->vm_map, + &virtual, + map->size, + PROT_READ|PROT_WRITE, VM_PROT_ALL, + MAP_SHARED, + SLIST_FIRST(&kdev->si_hlist), + map->offset); + } else { + virtual = 0; + retcode = vm_mmap(&p->p_vmspace->vm_map, + &virtual, + round_page(dma->byte_count), + PROT_READ|PROT_WRITE, VM_PROT_ALL, + MAP_SHARED, + SLIST_FIRST(&kdev->si_hlist), + 0); + } + if (retcode) { + /* Real error */ + DRM_DEBUG("mmap error\n"); + goto done; + } + request.virtual = (void *)virtual; + + for (i = 0; i < dma->buf_count; i++) { + retcode = copyout(&dma->buflist[i]->idx, + &request.list[i].idx, + sizeof(request.list[0].idx)); + if (retcode) goto done; + retcode = copyout(&dma->buflist[i]->total, + &request.list[i].total, + sizeof(request.list[0].total)); + if (retcode) goto done; + retcode = copyout(&zero, + &request.list[i].used, + sizeof(request.list[0].used)); + if (retcode) goto done; + address = virtual + dma->buflist[i]->offset; + retcode = copyout(&address, + &request.list[i].address, + sizeof(address)); + if (retcode) goto done; + } + } + done: + request.count = dma->buf_count; + DRM_DEBUG("%d buffers, retcode = %d\n", request.count, retcode); + + *(drm_buf_map_t *) data = request; + + DRM_DEBUG("retcode : %d\n", retcode); + + return retcode; +} -- cgit v1.2.3