From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/char/drm/drm_proc.c | 539 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 539 insertions(+) create mode 100644 drivers/char/drm/drm_proc.c (limited to 'drivers/char/drm/drm_proc.c') diff --git a/drivers/char/drm/drm_proc.c b/drivers/char/drm/drm_proc.c new file mode 100644 index 000000000000..6e06e8c6a516 --- /dev/null +++ b/drivers/char/drm/drm_proc.c @@ -0,0 +1,539 @@ +/** + * \file drm_proc.h + * /proc support for DRM + * + * \author Rickard E. (Rik) Faith + * \author Gareth Hughes + * + * \par Acknowledgements: + * Matthew J Sottek 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. + */ +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 (sizeof(drm_proc_list)/sizeof(drm_proc_list[0])) + +/** + * 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(drm_device_t *dev, int minor, + struct proc_dir_entry *root, + struct proc_dir_entry **dev_root) +{ + struct proc_dir_entry *ent; + int i, j; + char name[64]; + + sprintf(name, "%d", minor); + *dev_root = create_proc_entry(name, S_IFDIR, root); + if (!*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, *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, + *dev_root); + remove_proc_entry(name, root); + return -1; + } + ent->read_proc = drm_proc_list[i].f; + ent->data = dev; + } + + 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(int minor, struct proc_dir_entry *root, + struct proc_dir_entry *dev_root) +{ + int i; + char name[64]; + + if (!root || !dev_root) return 0; + + for (i = 0; i < DRM_PROC_ENTRIES; i++) + remove_proc_entry(drm_proc_list[i].name, dev_root); + sprintf(name, "%d", minor); + 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) +{ + drm_device_t *dev = (drm_device_t *)data; + 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) +{ + drm_device_t *dev = (drm_device_t *)data; + int len = 0; + drm_map_t *map; + drm_map_list_t *r_list; + struct list_head *list; + + /* Hardcoded from _DRM_FRAME_BUFFER, + _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and + _DRM_SCATTER_GATHER. */ + const char *types[] = { "FB", "REG", "SHM", "AGP", "SG" }; + 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; + if (dev->maplist != NULL) list_for_each(list, &dev->maplist->head) { + r_list = list_entry(list, drm_map_list_t, head); + map = r_list->map; + if(!map) continue; + if (map->type < 0 || map->type > 4) 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)map->handle); + 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_sem lock. + */ +static int drm_vm_info(char *buf, char **start, off_t offset, int request, + int *eof, void *data) +{ + drm_device_t *dev = (drm_device_t *)data; + int ret; + + down(&dev->struct_sem); + ret = drm__vm_info(buf, start, offset, request, eof, data); + up(&dev->struct_sem); + 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) +{ + drm_device_t *dev = (drm_device_t *)data; + int len = 0; + int i; + drm_queue_t *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_sem lock. + */ +static int drm_queues_info(char *buf, char **start, off_t offset, int request, + int *eof, void *data) +{ + drm_device_t *dev = (drm_device_t *)data; + int ret; + + down(&dev->struct_sem); + ret = drm__queues_info(buf, start, offset, request, eof, data); + up(&dev->struct_sem); + 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) +{ + drm_device_t *dev = (drm_device_t *)data; + int len = 0; + drm_device_dma_t *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_sem lock. + */ +static int drm_bufs_info(char *buf, char **start, off_t offset, int request, + int *eof, void *data) +{ + drm_device_t *dev = (drm_device_t *)data; + int ret; + + down(&dev->struct_sem); + ret = drm__bufs_info(buf, start, offset, request, eof, data); + up(&dev->struct_sem); + 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) +{ + drm_device_t *dev = (drm_device_t *)data; + int len = 0; + drm_file_t *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"); + for (priv = dev->file_first; priv; priv = priv->next) { + DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n", + priv->authenticated ? 'y' : 'n', + priv->minor, + 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_sem lock. + */ +static int drm_clients_info(char *buf, char **start, off_t offset, + int request, int *eof, void *data) +{ + drm_device_t *dev = (drm_device_t *)data; + int ret; + + down(&dev->struct_sem); + ret = drm__clients_info(buf, start, offset, request, eof, data); + up(&dev->struct_sem); + return ret; +} + +#if DRM_DEBUG_CODE + +static int drm__vma_info(char *buf, char **start, off_t offset, int request, + int *eof, void *data) +{ + drm_device_t *dev = (drm_device_t *)data; + int len = 0; + drm_vma_entry_t *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)); + for (pt = dev->vmalist; pt; pt = pt->next) { + if (!(vma = pt->vma)) continue; + DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx", + 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' : '-', + VM_OFFSET(vma)); + +#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) +{ + drm_device_t *dev = (drm_device_t *)data; + int ret; + + down(&dev->struct_sem); + ret = drm__vma_info(buf, start, offset, request, eof, data); + up(&dev->struct_sem); + return ret; +} +#endif + + -- cgit v1.2.3