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Diffstat (limited to 'drivers/char/drm/drm_proc.c')
-rw-r--r--drivers/char/drm/drm_proc.c539
1 files changed, 539 insertions, 0 deletions
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 <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.
+ */
+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
+
+
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