/** * \file drm_proc.c * /proc support for DRM * * \author Rickard E. (Rik) Faith <faith@valinux.com> * \author Gareth Hughes <gareth@valinux.com> * * \par Acknowledgements: * Matthew J Sottek <matthew.j.sottek@intel.com> sent in a patch to fix * the problem with the proc files not outputting all their information. */ /* * Created: Mon Jan 11 09:48:47 1999 by faith@valinux.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 * VA LINUX SYSTEMS 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" static int drm_name_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); static int drm_vm_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); static int drm_clients_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); static int drm_queues_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); static int drm_bufs_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); #if DRM_DEBUG_CODE static int drm_vma_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); #endif /** * Proc file list. */ static struct drm_proc_list { const char *name; /**< file name */ int (*f) (char *, char **, off_t, int, int *, void *); /**< proc callback*/ } drm_proc_list[] = { {"name", drm_name_info}, {"mem", drm_mem_info}, {"vm", drm_vm_info}, {"clients", drm_clients_info}, {"queues", drm_queues_info}, {"bufs", drm_bufs_info}, #if DRM_DEBUG_CODE {"vma", drm_vma_info}, #endif }; #define DRM_PROC_ENTRIES ARRAY_SIZE(drm_proc_list) /** * Initialize the DRI proc filesystem for a device. * * \param dev DRM device. * \param minor device minor number. * \param root DRI proc dir entry. * \param dev_root resulting DRI device proc dir entry. * \return root entry pointer on success, or NULL on failure. * * Create the DRI proc root entry "/proc/dri", the device proc root entry * "/proc/dri/%minor%/", and each entry in proc_list as * "/proc/dri/%minor%/%name%". */ int drm_proc_init(struct drm_minor *minor, int minor_id, struct proc_dir_entry *root) { struct proc_dir_entry *ent; int i, j; char name[64]; sprintf(name, "%d", minor_id); minor->dev_root = proc_mkdir(name, root); if (!minor->dev_root) { DRM_ERROR("Cannot create /proc/dri/%s\n", name); return -1; } for (i = 0; i < DRM_PROC_ENTRIES; i++) { ent = create_proc_entry(drm_proc_list[i].name, S_IFREG | S_IRUGO, minor->dev_root); if (!ent) { DRM_ERROR("Cannot create /proc/dri/%s/%s\n", name, drm_proc_list[i].name); for (j = 0; j < i; j++) remove_proc_entry(drm_proc_list[i].name, minor->dev_root); remove_proc_entry(name, root); minor->dev_root = NULL; return -1; } ent->read_proc = drm_proc_list[i].f; ent->data = minor; } return 0; } /** * Cleanup the proc filesystem resources. * * \param minor device minor number. * \param root DRI proc dir entry. * \param dev_root DRI device proc dir entry. * \return always zero. * * Remove all proc entries created by proc_init(). */ int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root) { int i; char name[64]; if (!root || !minor->dev_root) return 0; for (i = 0; i < DRM_PROC_ENTRIES; i++) remove_proc_entry(drm_proc_list[i].name, minor->dev_root); sprintf(name, "%d", minor->index); remove_proc_entry(name, root); return 0; } /** * Called when "/proc/dri/.../name" is read. * * \param buf output buffer. * \param start start of output data. * \param offset requested start offset. * \param request requested number of bytes. * \param eof whether there is no more data to return. * \param data private data. * \return number of written bytes. * * Prints the device name together with the bus id if available. */ static int drm_name_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int len = 0; if (offset > DRM_PROC_LIMIT) { *eof = 1; return 0; } *start = &buf[offset]; *eof = 0; if (dev->unique) { DRM_PROC_PRINT("%s %s %s\n", dev->driver->pci_driver.name, pci_name(dev->pdev), dev->unique); } else { DRM_PROC_PRINT("%s %s\n", dev->driver->pci_driver.name, pci_name(dev->pdev)); } if (len > request + offset) return request; *eof = 1; return len - offset; } /** * Called when "/proc/dri/.../vm" is read. * * \param buf output buffer. * \param start start of output data. * \param offset requested start offset. * \param request requested number of bytes. * \param eof whether there is no more data to return. * \param data private data. * \return number of written bytes. * * Prints information about all mappings in drm_device::maplist. */ static int drm__vm_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int len = 0; struct drm_map *map; struct drm_map_list *r_list; /* Hardcoded from _DRM_FRAME_BUFFER, _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; const char *type; int i; if (offset > DRM_PROC_LIMIT) { *eof = 1; return 0; } *start = &buf[offset]; *eof = 0; DRM_PROC_PRINT("slot offset size type flags " "address mtrr\n\n"); i = 0; list_for_each_entry(r_list, &dev->maplist, head) { map = r_list->map; if (!map) continue; if (map->type < 0 || map->type > 5) type = "??"; else type = types[map->type]; DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08lx ", i, map->offset, map->size, type, map->flags, (unsigned long) r_list->user_token); if (map->mtrr < 0) { DRM_PROC_PRINT("none\n"); } else { DRM_PROC_PRINT("%4d\n", map->mtrr); } i++; } if (len > request + offset) return request; *eof = 1; return len - offset; } /** * Simply calls _vm_info() while holding the drm_device::struct_mutex lock. */ static int drm_vm_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int ret; mutex_lock(&dev->struct_mutex); ret = drm__vm_info(buf, start, offset, request, eof, data); mutex_unlock(&dev->struct_mutex); return ret; } /** * Called when "/proc/dri/.../queues" is read. * * \param buf output buffer. * \param start start of output data. * \param offset requested start offset. * \param request requested number of bytes. * \param eof whether there is no more data to return. * \param data private data. * \return number of written bytes. */ static int drm__queues_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int len = 0; int i; struct drm_queue *q; if (offset > DRM_PROC_LIMIT) { *eof = 1; return 0; } *start = &buf[offset]; *eof = 0; DRM_PROC_PRINT(" ctx/flags use fin" " blk/rw/rwf wait flushed queued" " locks\n\n"); for (i = 0; i < dev->queue_count; i++) { q = dev->queuelist[i]; atomic_inc(&q->use_count); DRM_PROC_PRINT_RET(atomic_dec(&q->use_count), "%5d/0x%03x %5d %5d" " %5d/%c%c/%c%c%c %5Zd\n", i, q->flags, atomic_read(&q->use_count), atomic_read(&q->finalization), atomic_read(&q->block_count), atomic_read(&q->block_read) ? 'r' : '-', atomic_read(&q->block_write) ? 'w' : '-', waitqueue_active(&q->read_queue) ? 'r' : '-', waitqueue_active(&q-> write_queue) ? 'w' : '-', waitqueue_active(&q-> flush_queue) ? 'f' : '-', DRM_BUFCOUNT(&q->waitlist)); atomic_dec(&q->use_count); } if (len > request + offset) return request; *eof = 1; return len - offset; } /** * Simply calls _queues_info() while holding the drm_device::struct_mutex lock. */ static int drm_queues_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int ret; mutex_lock(&dev->struct_mutex); ret = drm__queues_info(buf, start, offset, request, eof, data); mutex_unlock(&dev->struct_mutex); return ret; } /** * Called when "/proc/dri/.../bufs" is read. * * \param buf output buffer. * \param start start of output data. * \param offset requested start offset. * \param request requested number of bytes. * \param eof whether there is no more data to return. * \param data private data. * \return number of written bytes. */ static int drm__bufs_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int len = 0; struct drm_device_dma *dma = dev->dma; int i; if (!dma || offset > DRM_PROC_LIMIT) { *eof = 1; return 0; } *start = &buf[offset]; *eof = 0; DRM_PROC_PRINT(" o size count free segs pages kB\n\n"); for (i = 0; i <= DRM_MAX_ORDER; i++) { if (dma->bufs[i].buf_count) DRM_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\n", i, dma->bufs[i].buf_size, dma->bufs[i].buf_count, atomic_read(&dma->bufs[i] .freelist.count), dma->bufs[i].seg_count, dma->bufs[i].seg_count * (1 << dma->bufs[i].page_order), (dma->bufs[i].seg_count * (1 << dma->bufs[i].page_order)) * PAGE_SIZE / 1024); } DRM_PROC_PRINT("\n"); for (i = 0; i < dma->buf_count; i++) { if (i && !(i % 32)) DRM_PROC_PRINT("\n"); DRM_PROC_PRINT(" %d", dma->buflist[i]->list); } DRM_PROC_PRINT("\n"); if (len > request + offset) return request; *eof = 1; return len - offset; } /** * Simply calls _bufs_info() while holding the drm_device::struct_mutex lock. */ static int drm_bufs_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int ret; mutex_lock(&dev->struct_mutex); ret = drm__bufs_info(buf, start, offset, request, eof, data); mutex_unlock(&dev->struct_mutex); return ret; } /** * Called when "/proc/dri/.../clients" is read. * * \param buf output buffer. * \param start start of output data. * \param offset requested start offset. * \param request requested number of bytes. * \param eof whether there is no more data to return. * \param data private data. * \return number of written bytes. */ static int drm__clients_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int len = 0; struct drm_file *priv; if (offset > DRM_PROC_LIMIT) { *eof = 1; return 0; } *start = &buf[offset]; *eof = 0; DRM_PROC_PRINT("a dev pid uid magic ioctls\n\n"); list_for_each_entry(priv, &dev->filelist, lhead) { DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n", priv->authenticated ? 'y' : 'n', priv->minor->index, priv->pid, priv->uid, priv->magic, priv->ioctl_count); } if (len > request + offset) return request; *eof = 1; return len - offset; } /** * Simply calls _clients_info() while holding the drm_device::struct_mutex lock. */ static int drm_clients_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int ret; mutex_lock(&dev->struct_mutex); ret = drm__clients_info(buf, start, offset, request, eof, data); mutex_unlock(&dev->struct_mutex); return ret; } #if DRM_DEBUG_CODE static int drm__vma_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int len = 0; struct drm_vma_entry *pt; struct vm_area_struct *vma; #if defined(__i386__) unsigned int pgprot; #endif if (offset > DRM_PROC_LIMIT) { *eof = 1; return 0; } *start = &buf[offset]; *eof = 0; DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n", atomic_read(&dev->vma_count), high_memory, virt_to_phys(high_memory)); list_for_each_entry(pt, &dev->vmalist, head) { if (!(vma = pt->vma)) continue; DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx000", pt->pid, vma->vm_start, vma->vm_end, vma->vm_flags & VM_READ ? 'r' : '-', vma->vm_flags & VM_WRITE ? 'w' : '-', vma->vm_flags & VM_EXEC ? 'x' : '-', vma->vm_flags & VM_MAYSHARE ? 's' : 'p', vma->vm_flags & VM_LOCKED ? 'l' : '-', vma->vm_flags & VM_IO ? 'i' : '-', vma->vm_pgoff); #if defined(__i386__) pgprot = pgprot_val(vma->vm_page_prot); DRM_PROC_PRINT(" %c%c%c%c%c%c%c%c%c", pgprot & _PAGE_PRESENT ? 'p' : '-', pgprot & _PAGE_RW ? 'w' : 'r', pgprot & _PAGE_USER ? 'u' : 's', pgprot & _PAGE_PWT ? 't' : 'b', pgprot & _PAGE_PCD ? 'u' : 'c', pgprot & _PAGE_ACCESSED ? 'a' : '-', pgprot & _PAGE_DIRTY ? 'd' : '-', pgprot & _PAGE_PSE ? 'm' : 'k', pgprot & _PAGE_GLOBAL ? 'g' : 'l'); #endif DRM_PROC_PRINT("\n"); } if (len > request + offset) return request; *eof = 1; return len - offset; } static int drm_vma_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; struct drm_device *dev = minor->dev; int ret; mutex_lock(&dev->struct_mutex); ret = drm__vma_info(buf, start, offset, request, eof, data); mutex_unlock(&dev->struct_mutex); return ret; } #endif