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/* mach64_drv.c -- mach64 (Rage Pro) driver -*- linux-c -*-
 * Created: Fri Nov 24 18:34:32 2000 by gareth@valinux.com
 *
 * Copyright 2000 Gareth Hughes
 * 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
 * GARETH HUGHES 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:
 *    Gareth Hughes <gareth@valinux.com>
 *    Leif Delgass <ldelgass@retinalburn.net>
 */

#include "drmP.h"
#include "drm.h"
#include "mach64_drm.h"
#include "mach64_drv.h"

#include "drm_pciids.h"

static struct pci_device_id pciidlist[] = {
	mach64_PCI_IDS
};

static int probe(struct pci_dev *pdev, const struct pci_device_id *ent);
static struct drm_driver driver = {
	.driver_features =
	    DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_HAVE_DMA
	    | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
	.lastclose = mach64_driver_lastclose,
	.get_vblank_counter = mach64_get_vblank_counter,
	.enable_vblank = mach64_enable_vblank,
	.disable_vblank = mach64_disable_vblank,
	.irq_preinstall = mach64_driver_irq_preinstall,
	.irq_postinstall = mach64_driver_irq_postinstall,
	.irq_uninstall = mach64_driver_irq_uninstall,
	.irq_handler = mach64_driver_irq_handler,
	.reclaim_buffers = drm_core_reclaim_buffers,
	.get_map_ofs = drm_core_get_map_ofs,
	.get_reg_ofs = drm_core_get_reg_ofs,
	.ioctls = mach64_ioctls,
	.dma_ioctl = mach64_dma_buffers,
	.fops = {
		.owner = THIS_MODULE,
		.open = drm_open,
		.release = drm_release,
		.ioctl = drm_ioctl,
		.mmap = drm_mmap,
		.poll = drm_poll,
		.fasync = drm_fasync,
		},
	.pci_driver = {
		.name = DRIVER_NAME,
		.id_table = pciidlist,
		.probe = probe,
		.remove = __devexit_p(drm_cleanup_pci),
	},

	.name = DRIVER_NAME,
	.desc = DRIVER_DESC,
	.date = DRIVER_DATE,
	.major = DRIVER_MAJOR,
	.minor = DRIVER_MINOR,
	.patchlevel = DRIVER_PATCHLEVEL,
};

static int probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	return drm_get_dev(pdev, ent, &driver);
}


static int __init mach64_init(void)
{
	driver.num_ioctls = mach64_max_ioctl;
	return drm_init(&driver, pciidlist);
}

static void __exit mach64_exit(void)
{
	drm_exit(&driver);
}

module_init(mach64_init);
module_exit(mach64_exit);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL and additional rights");
href='#n393'>393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486
/* drm_proc.h -- /proc support for DRM -*- linux-c -*-
 * 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.
 *
 * Authors:
 *    Rickard E. (Rik) Faith <faith@valinux.com>
 *    Gareth Hughes <gareth@valinux.com>
 *
 * 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.
 */

#define __NO_VERSION__
#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

struct drm_proc_list {
	const char *name;
	int	   (*f)(char *, char **, off_t, int, int *, void *);
} 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]))

struct proc_dir_entry *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];

	if (!minor) root = create_proc_entry("dri", S_IFDIR, NULL);
	if (!root) {
		DRM_ERROR("Cannot create /proc/dri\n");
		return NULL;
	}

	sprintf(name, "%d", minor);
	*dev_root = create_proc_entry(name, S_IFDIR, root);
	if (!*dev_root) {
		DRM_ERROR("Cannot create /proc/%s\n", name);
		return NULL;
	}

	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);
			if (!minor) remove_proc_entry("dri", NULL);
			return NULL;
		}
		ent->read_proc = DRM(proc_list)[i].f;
		ent->data      = dev;
	}

	return root;
}


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);
	if (!minor) remove_proc_entry("dri", NULL);

	return 0;
}

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 0x%lx %s\n",
			       dev->name, (long)dev->device, dev->unique);
	} else {
		DRM_PROC_PRINT("%s 0x%lx\n", dev->name, (long)dev->device);
	}

	if (len > request + offset) return request;
	*eof = 1;
	return len - offset;
}

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;
}

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;
}


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;
}

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;
}

/* drm_bufs_info is called whenever a process reads
   /dev/dri/<dev>/bufs. */

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;
}

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;
}


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;
}

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

#define DRM_VMA_VERBOSE 0

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 DRM_VMA_VERBOSE
	unsigned long	      i;
	unsigned long	      address;
	pgd_t		      *pgd;
	pmd_t		      *pmd;
	pte_t		      *pte;
#endif
#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 0
		for (i = vma->vm_start; i < vma->vm_end; i += PAGE_SIZE) {
			pgd = pgd_offset(vma->vm_mm, i);
			pmd = pmd_offset(pgd, i);
			preempt_disable();
			pte = pte_offset_map(pmd, i);
			if (pte_present(*pte)) {
				address = __pa(pte_page(*pte))
					+ (i & (PAGE_SIZE-1));
				DRM_PROC_PRINT("      0x%08lx -> 0x%08lx"
					       " %c%c%c%c%c\n",
					       i,
					       address,
					       pte_read(*pte)  ? 'r' : '-',
					       pte_write(*pte) ? 'w' : '-',
					       pte_exec(*pte)  ? 'x' : '-',
					       pte_dirty(*pte) ? 'd' : '-',
					       pte_young(*pte) ? 'a' : '-' );
			} else {
				DRM_PROC_PRINT("      0x%08lx\n", i);
			}
			pte_unmap(pte);
			preempt_enable();
		}
#endif
	}

	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